Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 DJ |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
5 | 2008 Free Software Foundation, Inc. | |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
776592bf | 24 | #include "hashtab.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "frame.h" | |
27 | #include "breakpoint.h" | |
28 | #include "gdbtypes.h" | |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
35 | #include "gdbthread.h" | |
36 | #include "target.h" | |
37 | #include "language.h" | |
38 | #include "gdb_string.h" | |
39 | #include "demangle.h" | |
40 | #include "annotate.h" | |
41 | #include "symfile.h" | |
42 | #include "objfiles.h" | |
0378c332 | 43 | #include "source.h" |
c5f0f3d0 | 44 | #include "linespec.h" |
c94fdfd0 | 45 | #include "completer.h" |
5b7f31a4 | 46 | #include "gdb.h" |
8b93c638 | 47 | #include "ui-out.h" |
e1507482 | 48 | #include "cli/cli-script.h" |
0225421b | 49 | #include "gdb_assert.h" |
fe898f56 | 50 | #include "block.h" |
a77053c2 | 51 | #include "solib.h" |
84acb35a JJ |
52 | #include "solist.h" |
53 | #include "observer.h" | |
60250e8b | 54 | #include "exceptions.h" |
765dc015 | 55 | #include "memattr.h" |
f7f9143b | 56 | #include "ada-lang.h" |
d1aa2f50 | 57 | #include "top.h" |
fa4727a6 | 58 | #include "wrapper.h" |
c906108c | 59 | |
104c1213 | 60 | #include "gdb-events.h" |
034dad6f | 61 | #include "mi/mi-common.h" |
104c1213 | 62 | |
74960c60 VP |
63 | #include "gdb_stdint.h" |
64 | ||
c906108c SS |
65 | /* Prototypes for local functions. */ |
66 | ||
f107f563 VP |
67 | static void until_break_command_continuation (struct continuation_arg *arg, |
68 | int error); | |
c2c6d25f | 69 | |
a14ed312 | 70 | static void catch_command_1 (char *, int, int); |
c906108c | 71 | |
a14ed312 | 72 | static void enable_delete_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 75 | |
a14ed312 | 76 | static void enable_once_command (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 79 | |
a14ed312 | 80 | static void disable_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void enable_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 85 | |
a14ed312 | 86 | static void ignore_command (char *, int); |
c906108c | 87 | |
4efb68b1 | 88 | static int breakpoint_re_set_one (void *); |
c906108c | 89 | |
a14ed312 | 90 | static void clear_command (char *, int); |
c906108c | 91 | |
a14ed312 | 92 | static void catch_command (char *, int); |
c906108c | 93 | |
a14ed312 | 94 | static void watch_command (char *, int); |
c906108c | 95 | |
a14ed312 | 96 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 97 | |
98deb0da | 98 | static void break_command_1 (char *, int, int); |
c906108c | 99 | |
a14ed312 | 100 | static void mention (struct breakpoint *); |
c906108c | 101 | |
4d28f7a8 | 102 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 103 | |
9f60f21b | 104 | static void check_duplicates (struct breakpoint *); |
c906108c | 105 | |
76897487 KB |
106 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
107 | ||
88f7da05 KB |
108 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
109 | enum bptype bptype); | |
76897487 | 110 | |
d674a25c | 111 | static void describe_other_breakpoints (CORE_ADDR, asection *, int); |
c906108c | 112 | |
a14ed312 | 113 | static void breakpoints_info (char *, int); |
c906108c | 114 | |
a14ed312 | 115 | static void breakpoint_1 (int, int); |
c906108c | 116 | |
89f9893c | 117 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 118 | |
4efb68b1 | 119 | static int breakpoint_cond_eval (void *); |
c906108c | 120 | |
4efb68b1 | 121 | static void cleanup_executing_breakpoints (void *); |
c906108c | 122 | |
a14ed312 | 123 | static void commands_command (char *, int); |
c906108c | 124 | |
a14ed312 | 125 | static void condition_command (char *, int); |
c906108c | 126 | |
a14ed312 | 127 | static int get_number_trailer (char **, int); |
c906108c | 128 | |
a14ed312 | 129 | void set_breakpoint_count (int); |
c906108c | 130 | |
c5aa993b JM |
131 | typedef enum |
132 | { | |
133 | mark_inserted, | |
134 | mark_uninserted | |
135 | } | |
136 | insertion_state_t; | |
c906108c | 137 | |
0bde7532 | 138 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 139 | |
a14ed312 | 140 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
141 | |
142 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 143 | |
c5aa993b JM |
144 | typedef struct |
145 | { | |
146 | enum exception_event_kind kind; | |
b5de0fa7 | 147 | int enable_p; |
c5aa993b JM |
148 | } |
149 | args_for_catchpoint_enable; | |
c906108c | 150 | |
4efb68b1 | 151 | static int watchpoint_check (void *); |
c906108c | 152 | |
a14ed312 | 153 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 154 | |
a14ed312 | 155 | static void create_longjmp_breakpoint (char *); |
c906108c | 156 | |
1900040c MS |
157 | static void create_overlay_event_breakpoint (char *); |
158 | ||
a14ed312 | 159 | static int hw_breakpoint_used_count (void); |
c906108c | 160 | |
a14ed312 | 161 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 162 | |
a14ed312 | 163 | static void hbreak_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void thbreak_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void watch_command_1 (char *, int, int); |
c906108c | 168 | |
a14ed312 | 169 | static void rwatch_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void awatch_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 174 | |
a14ed312 KB |
175 | static void create_fork_vfork_event_catchpoint (int tempflag, |
176 | char *cond_string, | |
177 | enum bptype bp_kind); | |
7a292a7a | 178 | |
a14ed312 | 179 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 180 | |
a14ed312 | 181 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 182 | |
a14ed312 | 183 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 186 | |
a14ed312 | 187 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 188 | |
a14ed312 | 189 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 190 | |
d85310f7 MS |
191 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
192 | enum exception_event_kind ex_event, | |
193 | struct symtab_and_line *sal); | |
7a292a7a | 194 | |
d85310f7 MS |
195 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
196 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 197 | |
a14ed312 | 198 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 199 | |
a14ed312 | 200 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 201 | |
1aafd4da UW |
202 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
203 | ||
fe3f5fa8 VP |
204 | static void free_bp_location (struct bp_location *loc); |
205 | ||
55a3f01f VP |
206 | static void mark_breakpoints_out (void); |
207 | ||
a5606eee VP |
208 | static struct bp_location * |
209 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type); | |
210 | ||
74960c60 | 211 | static void update_global_location_list (void); |
a5606eee | 212 | |
74960c60 VP |
213 | static void update_global_location_list_nothrow (void); |
214 | ||
215 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
216 | ||
217 | static void insert_breakpoint_locations (void); | |
a5606eee | 218 | |
2cec12e5 AR |
219 | static const char * |
220 | bpdisp_text (enum bpdisp disp) | |
221 | { | |
222 | /* NOTE: the following values are a part of MI protocol and represent | |
223 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
224 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
225 | return bpdisps[(int) disp]; | |
226 | } | |
c906108c | 227 | |
2cec12e5 | 228 | /* Prototypes for exported functions. */ |
c906108c SS |
229 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
230 | if such is available. */ | |
231 | static int can_use_hw_watchpoints; | |
232 | ||
920d2a44 AC |
233 | static void |
234 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
235 | struct cmd_list_element *c, | |
236 | const char *value) | |
237 | { | |
238 | fprintf_filtered (file, _("\ | |
239 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
240 | value); | |
241 | } | |
242 | ||
fa8d40ab JJ |
243 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
244 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
245 | for unrecognized breakpoint locations. | |
246 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
247 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
248 | static void |
249 | show_pending_break_support (struct ui_file *file, int from_tty, | |
250 | struct cmd_list_element *c, | |
251 | const char *value) | |
252 | { | |
253 | fprintf_filtered (file, _("\ | |
254 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
255 | value); | |
256 | } | |
fa8d40ab | 257 | |
765dc015 VP |
258 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
259 | set with "break" but falling in read-only memory. | |
260 | If 0, gdb will warn about such breakpoints, but won't automatically | |
261 | use hardware breakpoints. */ | |
262 | static int automatic_hardware_breakpoints; | |
263 | static void | |
264 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
265 | struct cmd_list_element *c, | |
266 | const char *value) | |
267 | { | |
268 | fprintf_filtered (file, _("\ | |
269 | Automatic usage of hardware breakpoints is %s.\n"), | |
270 | value); | |
271 | } | |
272 | ||
74960c60 VP |
273 | /* If 1, gdb will keep breakpoints inserted even as inferior is stopped, |
274 | and immediately insert any new breakpoints. If 0, gdb will insert | |
275 | breakpoints into inferior only when resuming it, and will remove | |
276 | breakpoints upon stop. */ | |
277 | static int always_inserted_mode = 0; | |
278 | static void | |
279 | show_always_inserted_mode (struct ui_file *file, int from_tty, | |
280 | struct cmd_list_element *c, const char *value) | |
281 | { | |
282 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
283 | } | |
284 | ||
765dc015 | 285 | |
a14ed312 | 286 | void _initialize_breakpoint (void); |
c906108c | 287 | |
c5aa993b | 288 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 289 | |
c906108c SS |
290 | /* Are we executing breakpoint commands? */ |
291 | static int executing_breakpoint_commands; | |
292 | ||
c02f5703 MS |
293 | /* Are overlay event breakpoints enabled? */ |
294 | static int overlay_events_enabled; | |
295 | ||
c906108c SS |
296 | /* Walk the following statement or block through all breakpoints. |
297 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
298 | breakpoint. */ | |
299 | ||
5c44784c | 300 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 301 | |
5c44784c JM |
302 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
303 | for (B = breakpoint_chain; \ | |
304 | B ? (TMP=B->next, 1): 0; \ | |
305 | B = TMP) | |
c906108c | 306 | |
7cc221ef DJ |
307 | /* Similar iterators for the low-level breakpoints. */ |
308 | ||
0d381245 | 309 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
310 | |
311 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
312 | for (B = bp_location_chain; \ | |
0d381245 | 313 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
314 | B = TMP) |
315 | ||
c906108c SS |
316 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
317 | ||
318 | int show_breakpoint_hit_counts = 1; | |
319 | ||
7cc221ef | 320 | /* Chains of all breakpoints defined. */ |
c906108c SS |
321 | |
322 | struct breakpoint *breakpoint_chain; | |
323 | ||
7cc221ef DJ |
324 | struct bp_location *bp_location_chain; |
325 | ||
c906108c SS |
326 | /* Number of last breakpoint made. */ |
327 | ||
328 | int breakpoint_count; | |
329 | ||
c5aa993b JM |
330 | /* Pointer to current exception event record */ |
331 | static struct exception_event_record *current_exception_event; | |
c906108c | 332 | |
c906108c SS |
333 | /* This function returns a pointer to the string representation of the |
334 | pathname of the dynamically-linked library that has just been | |
335 | loaded. | |
336 | ||
337 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
338 | or undefined results are guaranteed. | |
339 | ||
340 | This string's contents are only valid immediately after the | |
341 | inferior has stopped in the dynamic linker hook, and becomes | |
342 | invalid as soon as the inferior is continued. Clients should make | |
343 | a copy of this string if they wish to continue the inferior and | |
344 | then access the string. */ | |
345 | ||
346 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
347 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
348 | #endif | |
349 | ||
350 | /* This function returns a pointer to the string representation of the | |
351 | pathname of the dynamically-linked library that has just been | |
352 | unloaded. | |
353 | ||
354 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
355 | TRUE, or undefined results are guaranteed. | |
356 | ||
357 | This string's contents are only valid immediately after the | |
358 | inferior has stopped in the dynamic linker hook, and becomes | |
359 | invalid as soon as the inferior is continued. Clients should make | |
360 | a copy of this string if they wish to continue the inferior and | |
361 | then access the string. */ | |
362 | ||
363 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
364 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
365 | #endif | |
366 | ||
367 | /* This function is called by the "catch load" command. It allows the | |
368 | debugger to be notified by the dynamic linker when a specified | |
369 | library file (or any library file, if filename is NULL) is loaded. */ | |
370 | ||
371 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
372 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
8a3fe4f8 | 373 | error (_("catch of library loads not yet implemented on this platform")) |
c906108c SS |
374 | #endif |
375 | ||
376 | /* This function is called by the "catch unload" command. It allows | |
377 | the debugger to be notified by the dynamic linker when a specified | |
378 | library file (or any library file, if filename is NULL) is | |
379 | unloaded. */ | |
380 | ||
381 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
1272ad14 | 382 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \ |
8a3fe4f8 | 383 | error (_("catch of library unloads not yet implemented on this platform")) |
c906108c SS |
384 | #endif |
385 | ||
468d015d JJ |
386 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
387 | static int | |
388 | breakpoint_enabled (struct breakpoint *b) | |
389 | { | |
0d381245 | 390 | return (b->enable_state == bp_enabled); |
468d015d JJ |
391 | } |
392 | ||
c906108c SS |
393 | /* Set breakpoint count to NUM. */ |
394 | ||
395 | void | |
fba45db2 | 396 | set_breakpoint_count (int num) |
c906108c SS |
397 | { |
398 | breakpoint_count = num; | |
399 | set_internalvar (lookup_internalvar ("bpnum"), | |
400 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
401 | } | |
402 | ||
403 | /* Used in run_command to zero the hit count when a new run starts. */ | |
404 | ||
405 | void | |
fba45db2 | 406 | clear_breakpoint_hit_counts (void) |
c906108c SS |
407 | { |
408 | struct breakpoint *b; | |
409 | ||
410 | ALL_BREAKPOINTS (b) | |
411 | b->hit_count = 0; | |
412 | } | |
413 | ||
414 | /* Default address, symtab and line to put a breakpoint at | |
415 | for "break" command with no arg. | |
416 | if default_breakpoint_valid is zero, the other three are | |
417 | not valid, and "break" with no arg is an error. | |
418 | ||
419 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
420 | ||
421 | int default_breakpoint_valid; | |
422 | CORE_ADDR default_breakpoint_address; | |
423 | struct symtab *default_breakpoint_symtab; | |
424 | int default_breakpoint_line; | |
425 | \f | |
426 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
427 | Advance *PP after the string and any trailing whitespace. | |
428 | ||
429 | Currently the string can either be a number or "$" followed by the name | |
430 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 431 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
432 | |
433 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
434 | |
435 | TRAILER is a character which can be found after the number; most | |
436 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 437 | static int |
fba45db2 | 438 | get_number_trailer (char **pp, int trailer) |
c906108c | 439 | { |
5c44784c | 440 | int retval = 0; /* default */ |
c906108c SS |
441 | char *p = *pp; |
442 | ||
443 | if (p == NULL) | |
444 | /* Empty line means refer to the last breakpoint. */ | |
445 | return breakpoint_count; | |
446 | else if (*p == '$') | |
447 | { | |
448 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 449 | to pass to lookup_internalvar(). */ |
c906108c SS |
450 | char *varname; |
451 | char *start = ++p; | |
278cd55f | 452 | struct value *val; |
c906108c SS |
453 | |
454 | while (isalnum (*p) || *p == '_') | |
455 | p++; | |
456 | varname = (char *) alloca (p - start + 1); | |
457 | strncpy (varname, start, p - start); | |
458 | varname[p - start] = '\0'; | |
459 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 460 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
461 | retval = (int) value_as_long (val); |
462 | else | |
463 | { | |
a3f17187 | 464 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
465 | retval = 0; |
466 | } | |
c906108c SS |
467 | } |
468 | else | |
469 | { | |
470 | if (*p == '-') | |
471 | ++p; | |
472 | while (*p >= '0' && *p <= '9') | |
473 | ++p; | |
474 | if (p == *pp) | |
475 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
476 | { |
477 | /* Skip non-numeric token */ | |
478 | while (*p && !isspace((int) *p)) | |
479 | ++p; | |
480 | /* Return zero, which caller must interpret as error. */ | |
481 | retval = 0; | |
482 | } | |
483 | else | |
484 | retval = atoi (*pp); | |
485 | } | |
486 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
487 | { | |
488 | /* Trailing junk: return 0 and let caller print error msg. */ | |
489 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
490 | ++p; | |
491 | retval = 0; | |
c906108c | 492 | } |
c906108c SS |
493 | while (isspace (*p)) |
494 | p++; | |
495 | *pp = p; | |
496 | return retval; | |
497 | } | |
5c44784c | 498 | |
11cf8741 | 499 | |
5c44784c JM |
500 | /* Like get_number_trailer, but don't allow a trailer. */ |
501 | int | |
fba45db2 | 502 | get_number (char **pp) |
5c44784c JM |
503 | { |
504 | return get_number_trailer (pp, '\0'); | |
505 | } | |
506 | ||
507 | /* Parse a number or a range. | |
508 | * A number will be of the form handled by get_number. | |
509 | * A range will be of the form <number1> - <number2>, and | |
510 | * will represent all the integers between number1 and number2, | |
511 | * inclusive. | |
512 | * | |
513 | * While processing a range, this fuction is called iteratively; | |
514 | * At each call it will return the next value in the range. | |
515 | * | |
516 | * At the beginning of parsing a range, the char pointer PP will | |
517 | * be advanced past <number1> and left pointing at the '-' token. | |
518 | * Subsequent calls will not advance the pointer until the range | |
519 | * is completed. The call that completes the range will advance | |
520 | * pointer PP past <number2>. | |
521 | */ | |
522 | ||
523 | int | |
fba45db2 | 524 | get_number_or_range (char **pp) |
5c44784c JM |
525 | { |
526 | static int last_retval, end_value; | |
527 | static char *end_ptr; | |
528 | static int in_range = 0; | |
529 | ||
530 | if (**pp != '-') | |
531 | { | |
532 | /* Default case: pp is pointing either to a solo number, | |
533 | or to the first number of a range. */ | |
534 | last_retval = get_number_trailer (pp, '-'); | |
535 | if (**pp == '-') | |
536 | { | |
537 | char **temp; | |
538 | ||
539 | /* This is the start of a range (<number1> - <number2>). | |
540 | Skip the '-', parse and remember the second number, | |
541 | and also remember the end of the final token. */ | |
542 | ||
543 | temp = &end_ptr; | |
544 | end_ptr = *pp + 1; | |
545 | while (isspace ((int) *end_ptr)) | |
546 | end_ptr++; /* skip white space */ | |
547 | end_value = get_number (temp); | |
548 | if (end_value < last_retval) | |
549 | { | |
8a3fe4f8 | 550 | error (_("inverted range")); |
5c44784c JM |
551 | } |
552 | else if (end_value == last_retval) | |
553 | { | |
554 | /* degenerate range (number1 == number2). Advance the | |
555 | token pointer so that the range will be treated as a | |
556 | single number. */ | |
557 | *pp = end_ptr; | |
558 | } | |
559 | else | |
560 | in_range = 1; | |
561 | } | |
562 | } | |
563 | else if (! in_range) | |
8a3fe4f8 | 564 | error (_("negative value")); |
5c44784c JM |
565 | else |
566 | { | |
567 | /* pp points to the '-' that betokens a range. All | |
568 | number-parsing has already been done. Return the next | |
569 | integer value (one greater than the saved previous value). | |
570 | Do not advance the token pointer 'pp' until the end of range | |
571 | is reached. */ | |
572 | ||
573 | if (++last_retval == end_value) | |
574 | { | |
575 | /* End of range reached; advance token pointer. */ | |
576 | *pp = end_ptr; | |
577 | in_range = 0; | |
578 | } | |
579 | } | |
580 | return last_retval; | |
581 | } | |
582 | ||
583 | ||
c906108c SS |
584 | \f |
585 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
586 | ||
587 | static void | |
fba45db2 | 588 | condition_command (char *arg, int from_tty) |
c906108c | 589 | { |
52f0bd74 | 590 | struct breakpoint *b; |
c906108c | 591 | char *p; |
52f0bd74 | 592 | int bnum; |
c906108c SS |
593 | |
594 | if (arg == 0) | |
e2e0b3e5 | 595 | error_no_arg (_("breakpoint number")); |
c906108c SS |
596 | |
597 | p = arg; | |
598 | bnum = get_number (&p); | |
5c44784c | 599 | if (bnum == 0) |
8a3fe4f8 | 600 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
601 | |
602 | ALL_BREAKPOINTS (b) | |
603 | if (b->number == bnum) | |
c5aa993b | 604 | { |
511a6cd4 | 605 | struct bp_location *loc = b->loc; |
0d381245 | 606 | for (; loc; loc = loc->next) |
c5aa993b | 607 | { |
0d381245 VP |
608 | if (loc->cond) |
609 | { | |
610 | xfree (loc->cond); | |
611 | loc->cond = 0; | |
612 | } | |
c5aa993b JM |
613 | } |
614 | if (b->cond_string != NULL) | |
b8c9b27d | 615 | xfree (b->cond_string); |
c906108c | 616 | |
c5aa993b JM |
617 | if (*p == 0) |
618 | { | |
c5aa993b JM |
619 | b->cond_string = NULL; |
620 | if (from_tty) | |
a3f17187 | 621 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); |
c5aa993b JM |
622 | } |
623 | else | |
624 | { | |
625 | arg = p; | |
626 | /* I don't know if it matters whether this is the string the user | |
627 | typed in or the decompiled expression. */ | |
628 | b->cond_string = savestring (arg, strlen (arg)); | |
0d381245 VP |
629 | b->condition_not_parsed = 0; |
630 | for (loc = b->loc; loc; loc = loc->next) | |
0101ce28 | 631 | { |
0d381245 VP |
632 | arg = p; |
633 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
0101ce28 | 634 | if (*arg) |
8a3fe4f8 | 635 | error (_("Junk at end of expression")); |
0101ce28 | 636 | } |
c5aa993b JM |
637 | } |
638 | breakpoints_changed (); | |
221ea385 | 639 | breakpoint_modify_event (b->number); |
c5aa993b JM |
640 | return; |
641 | } | |
c906108c | 642 | |
8a3fe4f8 | 643 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
644 | } |
645 | ||
c906108c | 646 | static void |
fba45db2 | 647 | commands_command (char *arg, int from_tty) |
c906108c | 648 | { |
52f0bd74 | 649 | struct breakpoint *b; |
c906108c | 650 | char *p; |
52f0bd74 | 651 | int bnum; |
c906108c SS |
652 | struct command_line *l; |
653 | ||
654 | /* If we allowed this, we would have problems with when to | |
655 | free the storage, if we change the commands currently | |
656 | being read from. */ | |
657 | ||
658 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 659 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
660 | |
661 | p = arg; | |
662 | bnum = get_number (&p); | |
5c44784c | 663 | |
c906108c | 664 | if (p && *p) |
8a3fe4f8 | 665 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 666 | |
c906108c SS |
667 | ALL_BREAKPOINTS (b) |
668 | if (b->number == bnum) | |
9ebf4acf AC |
669 | { |
670 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
671 | bnum); | |
672 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
673 | l = read_command_lines (tmpbuf, from_tty); | |
674 | do_cleanups (cleanups); | |
675 | free_command_lines (&b->commands); | |
676 | b->commands = l; | |
677 | breakpoints_changed (); | |
678 | breakpoint_modify_event (b->number); | |
679 | return; | |
c5aa993b | 680 | } |
8a3fe4f8 | 681 | error (_("No breakpoint number %d."), bnum); |
c906108c | 682 | } |
40c03ae8 EZ |
683 | |
684 | /* Like commands_command, but instead of reading the commands from | |
685 | input stream, takes them from an already parsed command structure. | |
686 | ||
687 | This is used by cli-script.c to DTRT with breakpoint commands | |
688 | that are part of if and while bodies. */ | |
689 | enum command_control_type | |
690 | commands_from_control_command (char *arg, struct command_line *cmd) | |
691 | { | |
692 | struct breakpoint *b; | |
693 | char *p; | |
694 | int bnum; | |
695 | ||
696 | /* If we allowed this, we would have problems with when to | |
697 | free the storage, if we change the commands currently | |
698 | being read from. */ | |
699 | ||
700 | if (executing_breakpoint_commands) | |
701 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
702 | ||
703 | /* An empty string for the breakpoint number means the last | |
704 | breakpoint, but get_number expects a NULL pointer. */ | |
705 | if (arg && !*arg) | |
706 | p = NULL; | |
707 | else | |
708 | p = arg; | |
709 | bnum = get_number (&p); | |
710 | ||
711 | if (p && *p) | |
712 | error (_("Unexpected extra arguments following breakpoint number.")); | |
713 | ||
714 | ALL_BREAKPOINTS (b) | |
715 | if (b->number == bnum) | |
716 | { | |
717 | free_command_lines (&b->commands); | |
718 | if (cmd->body_count != 1) | |
719 | error (_("Invalid \"commands\" block structure.")); | |
720 | /* We need to copy the commands because if/while will free the | |
721 | list after it finishes execution. */ | |
722 | b->commands = copy_command_lines (cmd->body_list[0]); | |
723 | breakpoints_changed (); | |
724 | breakpoint_modify_event (b->number); | |
725 | return simple_control; | |
726 | } | |
727 | error (_("No breakpoint number %d."), bnum); | |
728 | } | |
c906108c | 729 | \f |
8defab1a DJ |
730 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
731 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 732 | |
8defab1a DJ |
733 | void |
734 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 735 | { |
8defab1a | 736 | struct bp_location *b; |
c906108c SS |
737 | CORE_ADDR bp_addr = 0; |
738 | int bp_size = 0; | |
8defab1a | 739 | int bptoffset = 0; |
c5aa993b | 740 | |
ffce0d52 | 741 | ALL_BP_LOCATIONS (b) |
c5aa993b | 742 | { |
ffce0d52 | 743 | if (b->owner->type == bp_none) |
8a3fe4f8 | 744 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
745 | b->owner->number); |
746 | ||
747 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 748 | continue; |
ffce0d52 | 749 | if (!b->inserted) |
c5aa993b JM |
750 | continue; |
751 | /* Addresses and length of the part of the breakpoint that | |
752 | we need to copy. */ | |
8181d85f DJ |
753 | bp_addr = b->target_info.placed_address; |
754 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 755 | if (bp_size == 0) |
8181d85f | 756 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 757 | continue; |
8defab1a | 758 | |
c5aa993b JM |
759 | if (bp_addr + bp_size <= memaddr) |
760 | /* The breakpoint is entirely before the chunk of memory we | |
761 | are reading. */ | |
762 | continue; | |
8defab1a | 763 | |
c5aa993b JM |
764 | if (bp_addr >= memaddr + len) |
765 | /* The breakpoint is entirely after the chunk of memory we are | |
766 | reading. */ | |
767 | continue; | |
c5aa993b | 768 | |
8defab1a DJ |
769 | /* Offset within shadow_contents. */ |
770 | if (bp_addr < memaddr) | |
771 | { | |
772 | /* Only copy the second part of the breakpoint. */ | |
773 | bp_size -= memaddr - bp_addr; | |
774 | bptoffset = memaddr - bp_addr; | |
775 | bp_addr = memaddr; | |
776 | } | |
c5aa993b | 777 | |
8defab1a DJ |
778 | if (bp_addr + bp_size > memaddr + len) |
779 | { | |
780 | /* Only copy the first part of the breakpoint. */ | |
781 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
782 | } | |
c5aa993b | 783 | |
8defab1a DJ |
784 | memcpy (buf + bp_addr - memaddr, |
785 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 786 | } |
c906108c | 787 | } |
c906108c | 788 | \f |
c5aa993b | 789 | |
687595f9 | 790 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 791 | static void |
687595f9 DJ |
792 | insert_catchpoint (struct ui_out *uo, void *args) |
793 | { | |
794 | struct breakpoint *b = (struct breakpoint *) args; | |
795 | int val = -1; | |
796 | ||
797 | switch (b->type) | |
798 | { | |
799 | case bp_catch_fork: | |
fa113d1a | 800 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
801 | break; |
802 | case bp_catch_vfork: | |
fa113d1a | 803 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
804 | break; |
805 | case bp_catch_exec: | |
fa113d1a | 806 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
807 | break; |
808 | default: | |
e2e0b3e5 | 809 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
687595f9 DJ |
810 | break; |
811 | } | |
687595f9 DJ |
812 | } |
813 | ||
a5606eee VP |
814 | static int |
815 | is_hardware_watchpoint (struct breakpoint *bpt) | |
816 | { | |
817 | return (bpt->type == bp_hardware_watchpoint | |
818 | || bpt->type == bp_read_watchpoint | |
819 | || bpt->type == bp_access_watchpoint); | |
820 | } | |
7270d8f2 | 821 | |
fa4727a6 DJ |
822 | /* Find the current value of a watchpoint on EXP. Return the value in |
823 | *VALP and *RESULTP and the chain of intermediate and final values | |
824 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
825 | not need them. | |
826 | ||
827 | If an error occurs while evaluating the expression, *RESULTP will | |
828 | be set to NULL. *RESULTP may be a lazy value, if the result could | |
829 | not be read from memory. It is used to determine whether a value | |
830 | is user-specified (we should watch the whole value) or intermediate | |
831 | (we should watch only the bit used to locate the final value). | |
832 | ||
833 | If the final value, or any intermediate value, could not be read | |
834 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
835 | set to any referenced values. *VALP will never be a lazy value. | |
836 | This is the value which we store in struct breakpoint. | |
837 | ||
838 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
839 | value chain. The caller must free the values individually. If | |
840 | VAL_CHAIN is NULL, all generated values will be left on the value | |
841 | chain. */ | |
842 | ||
843 | static void | |
844 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
845 | struct value **resultp, struct value **val_chain) | |
846 | { | |
847 | struct value *mark, *new_mark, *result; | |
848 | ||
849 | *valp = NULL; | |
850 | if (resultp) | |
851 | *resultp = NULL; | |
852 | if (val_chain) | |
853 | *val_chain = NULL; | |
854 | ||
855 | /* Evaluate the expression. */ | |
856 | mark = value_mark (); | |
857 | result = NULL; | |
858 | gdb_evaluate_expression (exp, &result); | |
859 | new_mark = value_mark (); | |
860 | if (mark == new_mark) | |
861 | return; | |
862 | if (resultp) | |
863 | *resultp = result; | |
864 | ||
865 | /* Make sure it's not lazy, so that after the target stops again we | |
866 | have a non-lazy previous value to compare with. */ | |
867 | if (result != NULL | |
868 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
869 | *valp = result; | |
870 | ||
871 | if (val_chain) | |
872 | { | |
873 | /* Return the chain of intermediate values. We use this to | |
874 | decide which addresses to watch. */ | |
875 | *val_chain = new_mark; | |
876 | value_release_to_mark (mark); | |
877 | } | |
878 | } | |
879 | ||
880 | /* Assuming that B is a hardware watchpoint: | |
a5606eee VP |
881 | - Reparse watchpoint expression, is REPARSE is non-zero |
882 | - Evaluate expression and store the result in B->val | |
883 | - Update the list of values that must be watched in B->loc. | |
884 | ||
885 | If the watchpoint is disabled, do nothing. If this is | |
886 | local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 887 | static void |
a5606eee | 888 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 889 | { |
a5606eee | 890 | int within_current_scope; |
a5606eee VP |
891 | struct frame_id saved_frame_id; |
892 | struct bp_location *loc; | |
893 | bpstat bs; | |
894 | ||
74960c60 VP |
895 | /* We don't free locations. They are stored in |
896 | bp_location_chain and update_global_locations will | |
897 | eventually delete them and remove breakpoints if | |
898 | needed. */ | |
a5606eee VP |
899 | b->loc = NULL; |
900 | ||
901 | if (b->disposition == disp_del_at_next_stop) | |
902 | return; | |
903 | ||
904 | /* Save the current frame's ID so we can restore it after | |
905 | evaluating the watchpoint expression on its own frame. */ | |
906 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
907 | took a frame parameter, so that we didn't have to change the | |
908 | selected frame. */ | |
909 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
910 | ||
911 | /* Determine if the watchpoint is within scope. */ | |
912 | if (b->exp_valid_block == NULL) | |
913 | within_current_scope = 1; | |
914 | else | |
915 | { | |
916 | struct frame_info *fi; | |
917 | fi = frame_find_by_id (b->watchpoint_frame); | |
918 | within_current_scope = (fi != NULL); | |
919 | if (within_current_scope) | |
920 | select_frame (fi); | |
921 | } | |
922 | ||
923 | if (within_current_scope && reparse) | |
924 | { | |
925 | char *s; | |
926 | if (b->exp) | |
927 | { | |
928 | xfree (b->exp); | |
929 | b->exp = NULL; | |
930 | } | |
931 | s = b->exp_string; | |
932 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
933 | /* If the meaning of expression itself changed, the old value is | |
934 | no longer relevant. We don't want to report a watchpoint hit | |
935 | to the user when the old value and the new value may actually | |
936 | be completely different objects. */ | |
937 | value_free (b->val); | |
fa4727a6 DJ |
938 | b->val = NULL; |
939 | b->val_valid = 0; | |
a5606eee | 940 | } |
a5606eee VP |
941 | |
942 | /* If we failed to parse the expression, for example because | |
943 | it refers to a global variable in a not-yet-loaded shared library, | |
944 | don't try to insert watchpoint. We don't automatically delete | |
945 | such watchpoint, though, since failure to parse expression | |
946 | is different from out-of-scope watchpoint. */ | |
947 | if (within_current_scope && b->exp) | |
948 | { | |
fa4727a6 | 949 | struct value *val_chain, *v, *result, *next; |
a5606eee | 950 | |
fa4727a6 | 951 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 952 | |
a5606eee VP |
953 | /* Avoid setting b->val if it's already set. The meaning of |
954 | b->val is 'the last value' user saw, and we should update | |
955 | it only if we reported that last value to user. As it | |
956 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
957 | if (!b->val_valid) |
958 | { | |
959 | b->val = v; | |
960 | b->val_valid = 1; | |
961 | } | |
a5606eee VP |
962 | |
963 | /* Look at each value on the value chain. */ | |
fa4727a6 | 964 | for (v = val_chain; v; v = next) |
a5606eee VP |
965 | { |
966 | /* If it's a memory location, and GDB actually needed | |
967 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
968 | must watch it. If the first value returned is |
969 | still lazy, that means an error occurred reading it; | |
970 | watch it anyway in case it becomes readable. */ | |
a5606eee | 971 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 972 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
973 | { |
974 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 975 | |
a5606eee VP |
976 | /* We only watch structs and arrays if user asked |
977 | for it explicitly, never if they just happen to | |
978 | appear in the middle of some value chain. */ | |
fa4727a6 | 979 | if (v == result |
a5606eee VP |
980 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
981 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
982 | { | |
983 | CORE_ADDR addr; | |
984 | int len, type; | |
985 | struct bp_location *loc, **tmp; | |
986 | ||
987 | addr = VALUE_ADDRESS (v) + value_offset (v); | |
988 | len = TYPE_LENGTH (value_type (v)); | |
989 | type = hw_write; | |
990 | if (b->type == bp_read_watchpoint) | |
991 | type = hw_read; | |
992 | else if (b->type == bp_access_watchpoint) | |
993 | type = hw_access; | |
994 | ||
995 | loc = allocate_bp_location (b, bp_hardware_watchpoint); | |
996 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
997 | ; | |
998 | *tmp = loc; | |
999 | loc->address = addr; | |
1000 | loc->length = len; | |
1001 | loc->watchpoint_type = type; | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | next = value_next (v); | |
1006 | if (v != b->val) | |
1007 | value_free (v); | |
1008 | } | |
1009 | ||
2ec93238 MK |
1010 | /* We just regenerated the list of breakpoint locations. |
1011 | The new location does not have its condition field set to anything | |
1012 | and therefore, we must always reparse the cond_string, independently | |
1013 | of the value of the reparse flag. */ | |
1014 | if (b->cond_string != NULL) | |
a5606eee VP |
1015 | { |
1016 | char *s = b->cond_string; | |
a5606eee VP |
1017 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1018 | } | |
1019 | } | |
1020 | else if (!within_current_scope) | |
7270d8f2 | 1021 | { |
a5606eee VP |
1022 | printf_filtered (_("\ |
1023 | Hardware watchpoint %d deleted because the program has left the block \n\ | |
1024 | in which its expression is valid.\n"), | |
1025 | b->number); | |
1026 | if (b->related_breakpoint) | |
1027 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1028 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1029 | } |
a5606eee VP |
1030 | |
1031 | /* Restore the selected frame. */ | |
1032 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1033 | } |
1034 | ||
a5606eee | 1035 | |
74960c60 VP |
1036 | /* Returns 1 iff breakpoint location should be |
1037 | inserted in the inferior. */ | |
1038 | static int | |
1039 | should_be_inserted (struct bp_location *bpt) | |
1040 | { | |
1041 | if (!breakpoint_enabled (bpt->owner)) | |
1042 | return 0; | |
1043 | ||
1044 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1045 | return 0; | |
1046 | ||
1047 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1048 | return 0; | |
1049 | ||
1050 | return 1; | |
1051 | } | |
1052 | ||
879bfdc2 DJ |
1053 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1054 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
1055 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
1056 | ||
1057 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1058 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1059 | static int |
879bfdc2 | 1060 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
1061 | struct ui_file *tmp_error_stream, |
1062 | int *disabled_breaks, int *process_warning, | |
1063 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
1064 | { |
1065 | int val = 0; | |
1066 | ||
74960c60 | 1067 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1068 | return 0; |
1069 | ||
8181d85f DJ |
1070 | /* Initialize the target-specific information. */ |
1071 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1072 | bpt->target_info.placed_address = bpt->address; | |
1073 | ||
879bfdc2 DJ |
1074 | if (bpt->loc_type == bp_loc_software_breakpoint |
1075 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1076 | { | |
765dc015 VP |
1077 | if (bpt->owner->type != bp_hardware_breakpoint) |
1078 | { | |
1079 | /* If the explicitly specified breakpoint type | |
1080 | is not hardware breakpoint, check the memory map to see | |
1081 | if the breakpoint address is in read only memory or not. | |
1082 | Two important cases are: | |
1083 | - location type is not hardware breakpoint, memory | |
1084 | is readonly. We change the type of the location to | |
1085 | hardware breakpoint. | |
1086 | - location type is hardware breakpoint, memory is read-write. | |
1087 | This means we've previously made the location hardware one, but | |
1088 | then the memory map changed, so we undo. | |
1089 | ||
1090 | When breakpoints are removed, remove_breakpoints will | |
1091 | use location types we've just set here, the only possible | |
1092 | problem is that memory map has changed during running program, | |
1093 | but it's not going to work anyway with current gdb. */ | |
1094 | struct mem_region *mr | |
1095 | = lookup_mem_region (bpt->target_info.placed_address); | |
1096 | ||
1097 | if (mr) | |
1098 | { | |
1099 | if (automatic_hardware_breakpoints) | |
1100 | { | |
1101 | int changed = 0; | |
1102 | enum bp_loc_type new_type; | |
1103 | ||
1104 | if (mr->attrib.mode != MEM_RW) | |
1105 | new_type = bp_loc_hardware_breakpoint; | |
1106 | else | |
1107 | new_type = bp_loc_software_breakpoint; | |
1108 | ||
1109 | if (new_type != bpt->loc_type) | |
1110 | { | |
1111 | static int said = 0; | |
1112 | bpt->loc_type = new_type; | |
1113 | if (!said) | |
1114 | { | |
1115 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1116 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1117 | said = 1; |
1118 | } | |
1119 | } | |
1120 | } | |
1121 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1122 | && mr->attrib.mode != MEM_RW) | |
1123 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1124 | paddr (bpt->address)); | |
1125 | } | |
1126 | } | |
1127 | ||
879bfdc2 DJ |
1128 | /* First check to see if we have to handle an overlay. */ |
1129 | if (overlay_debugging == ovly_off | |
1130 | || bpt->section == NULL | |
1131 | || !(section_is_overlay (bpt->section))) | |
1132 | { | |
1133 | /* No overlay handling: just set the breakpoint. */ | |
1134 | ||
1135 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1136 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1137 | else |
8181d85f | 1138 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1139 | } |
1140 | else | |
1141 | { | |
1142 | /* This breakpoint is in an overlay section. | |
1143 | Shall we set a breakpoint at the LMA? */ | |
1144 | if (!overlay_events_enabled) | |
1145 | { | |
1146 | /* Yes -- overlay event support is not active, | |
1147 | so we must try to set a breakpoint at the LMA. | |
1148 | This will not work for a hardware breakpoint. */ | |
1149 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1150 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1151 | bpt->owner->number); |
1152 | else | |
1153 | { | |
1154 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1155 | bpt->section); | |
1156 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1157 | bpt->overlay_target_info = bpt->target_info; |
1158 | bpt->overlay_target_info.placed_address = addr; | |
1159 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
1160 | if (val != 0) |
1161 | fprintf_unfiltered (tmp_error_stream, | |
1162 | "Overlay breakpoint %d failed: in ROM?", | |
1163 | bpt->owner->number); | |
1164 | } | |
1165 | } | |
1166 | /* Shall we set a breakpoint at the VMA? */ | |
1167 | if (section_is_mapped (bpt->section)) | |
1168 | { | |
1169 | /* Yes. This overlay section is mapped into memory. */ | |
1170 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1171 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1172 | else |
8181d85f | 1173 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1174 | } |
1175 | else | |
1176 | { | |
1177 | /* No. This breakpoint will not be inserted. | |
1178 | No error, but do not mark the bp as 'inserted'. */ | |
1179 | return 0; | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | if (val) | |
1184 | { | |
1185 | /* Can't set the breakpoint. */ | |
9bbf65bb | 1186 | if (solib_address (bpt->address)) |
879bfdc2 DJ |
1187 | { |
1188 | /* See also: disable_breakpoints_in_shlibs. */ | |
1189 | val = 0; | |
0d381245 | 1190 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1191 | if (!*disabled_breaks) |
1192 | { | |
1193 | fprintf_unfiltered (tmp_error_stream, | |
1194 | "Cannot insert breakpoint %d.\n", | |
1195 | bpt->owner->number); | |
1196 | fprintf_unfiltered (tmp_error_stream, | |
1197 | "Temporarily disabling shared library breakpoints:\n"); | |
1198 | } | |
1199 | *disabled_breaks = 1; | |
1200 | fprintf_unfiltered (tmp_error_stream, | |
1201 | "breakpoint #%d\n", bpt->owner->number); | |
1202 | } | |
1203 | else | |
879bfdc2 DJ |
1204 | { |
1205 | #ifdef ONE_PROCESS_WRITETEXT | |
1206 | *process_warning = 1; | |
1207 | #endif | |
1208 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
1209 | { | |
1210 | *hw_breakpoint_error = 1; | |
1211 | fprintf_unfiltered (tmp_error_stream, | |
1212 | "Cannot insert hardware breakpoint %d.\n", | |
1213 | bpt->owner->number); | |
1214 | } | |
1215 | else | |
1216 | { | |
1217 | fprintf_unfiltered (tmp_error_stream, | |
1218 | "Cannot insert breakpoint %d.\n", | |
1219 | bpt->owner->number); | |
1220 | fprintf_filtered (tmp_error_stream, | |
1221 | "Error accessing memory address "); | |
ed49a04f | 1222 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1223 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1224 | safe_strerror (val)); | |
1225 | } | |
1226 | ||
1227 | } | |
1228 | } | |
1229 | else | |
1230 | bpt->inserted = 1; | |
1231 | ||
1232 | return val; | |
1233 | } | |
1234 | ||
1235 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1236 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1237 | watchpoints. It's not clear that it's necessary... */ | |
1238 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1239 | { | |
a5606eee VP |
1240 | val = target_insert_watchpoint (bpt->address, |
1241 | bpt->length, | |
1242 | bpt->watchpoint_type); | |
1243 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1244 | } |
1245 | ||
879bfdc2 DJ |
1246 | else if (bpt->owner->type == bp_catch_fork |
1247 | || bpt->owner->type == bp_catch_vfork | |
1248 | || bpt->owner->type == bp_catch_exec) | |
1249 | { | |
71fff37b AC |
1250 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1251 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1252 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1253 | bpt->owner->number); | |
1254 | if (e.reason < 0) | |
879bfdc2 DJ |
1255 | bpt->owner->enable_state = bp_disabled; |
1256 | else | |
1257 | bpt->inserted = 1; | |
1640b821 DJ |
1258 | |
1259 | /* We've already printed an error message if there was a problem | |
1260 | inserting this catchpoint, and we've disabled the catchpoint, | |
1261 | so just return success. */ | |
1262 | return 0; | |
879bfdc2 DJ |
1263 | } |
1264 | ||
1265 | return 0; | |
1266 | } | |
1267 | ||
74960c60 VP |
1268 | /* Make sure all breakpoints are inserted in inferior. |
1269 | Throws exception on any error. | |
1270 | A breakpoint that is already inserted won't be inserted | |
1271 | again, so calling this function twice is safe. */ | |
1272 | void | |
1273 | insert_breakpoints (void) | |
1274 | { | |
1275 | struct breakpoint *bpt; | |
1276 | ||
1277 | ALL_BREAKPOINTS (bpt) | |
1278 | if (is_hardware_watchpoint (bpt)) | |
1279 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1280 | ||
1281 | update_global_location_list (); | |
1282 | ||
1283 | if (!always_inserted_mode && target_has_execution) | |
1284 | /* update_global_location_list does not insert breakpoints | |
1285 | when always_inserted_mode is not enabled. Explicitly | |
1286 | insert them now. */ | |
1287 | insert_breakpoint_locations (); | |
1288 | } | |
1289 | ||
c906108c SS |
1290 | /* insert_breakpoints is used when starting or continuing the program. |
1291 | remove_breakpoints is used when the program stops. | |
1292 | Both return zero if successful, | |
1293 | or an `errno' value if could not write the inferior. */ | |
1294 | ||
74960c60 VP |
1295 | static void |
1296 | insert_breakpoint_locations (void) | |
c906108c | 1297 | { |
a5606eee | 1298 | struct breakpoint *bpt; |
879bfdc2 | 1299 | struct bp_location *b, *temp; |
e236ba44 | 1300 | int error = 0; |
c906108c SS |
1301 | int val = 0; |
1302 | int disabled_breaks = 0; | |
81d0cc19 GS |
1303 | int hw_breakpoint_error = 0; |
1304 | int process_warning = 0; | |
c906108c | 1305 | |
81d0cc19 GS |
1306 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1307 | make_cleanup_ui_file_delete (tmp_error_stream); | |
74960c60 | 1308 | |
81d0cc19 GS |
1309 | /* Explicitly mark the warning -- this will only be printed if |
1310 | there was an error. */ | |
1311 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1312 | |
879bfdc2 DJ |
1313 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1314 | { | |
74960c60 | 1315 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1316 | continue; |
1317 | ||
f365de73 AS |
1318 | /* There is no point inserting thread-specific breakpoints if the |
1319 | thread no longer exists. */ | |
1320 | if (b->owner->thread != -1 | |
1321 | && !valid_thread_id (b->owner->thread)) | |
1322 | continue; | |
1323 | ||
879bfdc2 DJ |
1324 | val = insert_bp_location (b, tmp_error_stream, |
1325 | &disabled_breaks, &process_warning, | |
1326 | &hw_breakpoint_error); | |
1327 | if (val) | |
e236ba44 | 1328 | error = val; |
879bfdc2 | 1329 | } |
c906108c | 1330 | |
a5606eee VP |
1331 | /* If we failed to insert all locations of a watchpoint, |
1332 | remove them, as half-inserted watchpoint is of limited use. */ | |
1333 | ALL_BREAKPOINTS (bpt) | |
1334 | { | |
1335 | int some_failed = 0; | |
1336 | struct bp_location *loc; | |
1337 | ||
1338 | if (!is_hardware_watchpoint (bpt)) | |
1339 | continue; | |
1340 | ||
1341 | if (bpt->enable_state != bp_enabled) | |
1342 | continue; | |
74960c60 VP |
1343 | |
1344 | if (bpt->disposition == disp_del_at_next_stop) | |
1345 | continue; | |
a5606eee VP |
1346 | |
1347 | for (loc = bpt->loc; loc; loc = loc->next) | |
1348 | if (!loc->inserted) | |
1349 | { | |
1350 | some_failed = 1; | |
1351 | break; | |
1352 | } | |
1353 | if (some_failed) | |
1354 | { | |
1355 | for (loc = bpt->loc; loc; loc = loc->next) | |
1356 | if (loc->inserted) | |
1357 | remove_breakpoint (loc, mark_uninserted); | |
1358 | ||
1359 | hw_breakpoint_error = 1; | |
1360 | fprintf_unfiltered (tmp_error_stream, | |
1361 | "Could not insert hardware watchpoint %d.\n", | |
1362 | bpt->number); | |
1363 | error = -1; | |
1364 | } | |
1365 | } | |
1366 | ||
e236ba44 | 1367 | if (error) |
81d0cc19 GS |
1368 | { |
1369 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1370 | message about possibly exhausted resources. */ | |
879bfdc2 | 1371 | if (hw_breakpoint_error) |
81d0cc19 | 1372 | { |
c6510018 MS |
1373 | fprintf_unfiltered (tmp_error_stream, |
1374 | "Could not insert hardware breakpoints:\n\ | |
1375 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1376 | } |
c6510018 | 1377 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1378 | if (process_warning) |
c6510018 MS |
1379 | fprintf_unfiltered (tmp_error_stream, |
1380 | "The same program may be running in another process."); | |
1381 | #endif | |
81d0cc19 GS |
1382 | target_terminal_ours_for_output (); |
1383 | error_stream (tmp_error_stream); | |
1384 | } | |
c906108c SS |
1385 | } |
1386 | ||
c906108c | 1387 | int |
fba45db2 | 1388 | remove_breakpoints (void) |
c906108c | 1389 | { |
0bde7532 | 1390 | struct bp_location *b; |
c906108c SS |
1391 | int val; |
1392 | ||
0bde7532 | 1393 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1394 | { |
0bde7532 | 1395 | if (b->inserted) |
c5aa993b JM |
1396 | { |
1397 | val = remove_breakpoint (b, mark_uninserted); | |
1398 | if (val != 0) | |
1399 | return val; | |
1400 | } | |
1401 | } | |
c906108c SS |
1402 | return 0; |
1403 | } | |
1404 | ||
692590c1 | 1405 | int |
80ce1ecb | 1406 | remove_hw_watchpoints (void) |
692590c1 | 1407 | { |
0bde7532 | 1408 | struct bp_location *b; |
692590c1 MS |
1409 | int val; |
1410 | ||
0bde7532 | 1411 | ALL_BP_LOCATIONS (b) |
692590c1 | 1412 | { |
0bde7532 | 1413 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1414 | { |
1415 | val = remove_breakpoint (b, mark_uninserted); | |
1416 | if (val != 0) | |
1417 | return val; | |
1418 | } | |
1419 | } | |
1420 | return 0; | |
1421 | } | |
1422 | ||
c906108c | 1423 | int |
fba45db2 | 1424 | reattach_breakpoints (int pid) |
c906108c | 1425 | { |
0bde7532 | 1426 | struct bp_location *b; |
c906108c | 1427 | int val; |
ce696e05 | 1428 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 DJ |
1429 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1430 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; | |
1431 | ||
1432 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1433 | |
ce696e05 | 1434 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1435 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1436 | { |
0bde7532 | 1437 | if (b->inserted) |
c5aa993b | 1438 | { |
a4954f26 DJ |
1439 | b->inserted = 0; |
1440 | val = insert_bp_location (b, tmp_error_stream, | |
1441 | &dummy1, &dummy2, &dummy3); | |
c5aa993b JM |
1442 | if (val != 0) |
1443 | { | |
ce696e05 | 1444 | do_cleanups (old_chain); |
c5aa993b JM |
1445 | return val; |
1446 | } | |
1447 | } | |
1448 | } | |
ce696e05 | 1449 | do_cleanups (old_chain); |
c906108c SS |
1450 | return 0; |
1451 | } | |
1452 | ||
74960c60 VP |
1453 | static void |
1454 | restore_always_inserted_mode (void *p) | |
1455 | { | |
1456 | always_inserted_mode = (uintptr_t) p; | |
1457 | } | |
1458 | ||
c906108c | 1459 | void |
fba45db2 | 1460 | update_breakpoints_after_exec (void) |
c906108c | 1461 | { |
c5aa993b JM |
1462 | struct breakpoint *b; |
1463 | struct breakpoint *temp; | |
74960c60 | 1464 | struct cleanup *cleanup; |
c906108c SS |
1465 | |
1466 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1467 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1468 | shadow is NOT valid after an exec()! */ | |
1469 | mark_breakpoints_out (); | |
1470 | ||
74960c60 VP |
1471 | /* The binary we used to debug is now gone, and we're updating |
1472 | breakpoints for the new binary. Until we're done, we should not | |
1473 | try to insert breakpoints. */ | |
1474 | cleanup = make_cleanup (restore_always_inserted_mode, | |
1475 | (void *) (uintptr_t) always_inserted_mode); | |
1476 | always_inserted_mode = 0; | |
1477 | ||
c906108c | 1478 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b JM |
1479 | { |
1480 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1481 | if (b->type == bp_shlib_event) | |
1482 | { | |
1483 | delete_breakpoint (b); | |
1484 | continue; | |
1485 | } | |
c906108c | 1486 | |
1900040c MS |
1487 | /* Thread event breakpoints must be set anew after an exec(), |
1488 | as must overlay event breakpoints. */ | |
1489 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1490 | { |
1491 | delete_breakpoint (b); | |
1492 | continue; | |
1493 | } | |
1494 | ||
c5aa993b JM |
1495 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1496 | if (b->type == bp_step_resume) | |
1497 | { | |
1498 | delete_breakpoint (b); | |
1499 | continue; | |
1500 | } | |
1501 | ||
c5aa993b JM |
1502 | /* Don't delete an exec catchpoint, because else the inferior |
1503 | won't stop when it ought! | |
1504 | ||
1505 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1506 | on this target, we may not be able to stop when the vfork is |
1507 | seen, but only when the subsequent exec is seen. (And because | |
1508 | deleting fork catchpoints here but not vfork catchpoints will | |
e14a792b | 1509 | seem mysterious to users, keep those too.) */ |
c5aa993b JM |
1510 | if ((b->type == bp_catch_exec) || |
1511 | (b->type == bp_catch_vfork) || | |
1512 | (b->type == bp_catch_fork)) | |
1513 | { | |
c5aa993b JM |
1514 | continue; |
1515 | } | |
1516 | ||
1517 | /* bp_finish is a special case. The only way we ought to be able | |
1518 | to see one of these when an exec() has happened, is if the user | |
1519 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1520 | carries them to the call-site of the current callee, by setting | |
1521 | a temporary bp there and resuming. But in this case, the finish | |
1522 | will carry them entirely through the vfork & exec. | |
1523 | ||
1524 | We don't want to allow a bp_finish to remain inserted now. But | |
1525 | we can't safely delete it, 'cause finish_command has a handle to | |
1526 | the bp on a bpstat, and will later want to delete it. There's a | |
1527 | chance (and I've seen it happen) that if we delete the bp_finish | |
1528 | here, that its storage will get reused by the time finish_command | |
1529 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1530 | We really must allow finish_command to delete a bp_finish. | |
1531 | ||
53a5351d JM |
1532 | In the absense of a general solution for the "how do we know |
1533 | it's safe to delete something others may have handles to?" | |
1534 | problem, what we'll do here is just uninsert the bp_finish, and | |
1535 | let finish_command delete it. | |
1536 | ||
1537 | (We know the bp_finish is "doomed" in the sense that it's | |
1538 | momentary, and will be deleted as soon as finish_command sees | |
1539 | the inferior stopped. So it doesn't matter that the bp's | |
1540 | address is probably bogus in the new a.out, unlike e.g., the | |
1541 | solib breakpoints.) */ | |
c5aa993b | 1542 | |
c5aa993b JM |
1543 | if (b->type == bp_finish) |
1544 | { | |
1545 | continue; | |
1546 | } | |
1547 | ||
1548 | /* Without a symbolic address, we have little hope of the | |
1549 | pre-exec() address meaning the same thing in the post-exec() | |
1550 | a.out. */ | |
1551 | if (b->addr_string == NULL) | |
1552 | { | |
1553 | delete_breakpoint (b); | |
1554 | continue; | |
1555 | } | |
c5aa993b | 1556 | } |
1900040c MS |
1557 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1558 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
74960c60 | 1559 | do_cleanups (cleanup); |
c906108c SS |
1560 | } |
1561 | ||
1562 | int | |
fba45db2 | 1563 | detach_breakpoints (int pid) |
c906108c | 1564 | { |
0bde7532 | 1565 | struct bp_location *b; |
c906108c | 1566 | int val; |
ce696e05 | 1567 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1568 | |
39f77062 | 1569 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1570 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1571 | |
ce696e05 KB |
1572 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1573 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1574 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1575 | { |
0bde7532 | 1576 | if (b->inserted) |
c5aa993b JM |
1577 | { |
1578 | val = remove_breakpoint (b, mark_inserted); | |
1579 | if (val != 0) | |
1580 | { | |
ce696e05 | 1581 | do_cleanups (old_chain); |
c5aa993b JM |
1582 | return val; |
1583 | } | |
1584 | } | |
1585 | } | |
ce696e05 | 1586 | do_cleanups (old_chain); |
c906108c SS |
1587 | return 0; |
1588 | } | |
1589 | ||
1590 | static int | |
0bde7532 | 1591 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1592 | { |
1593 | int val; | |
c5aa993b | 1594 | |
0bde7532 | 1595 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1596 | /* Permanent breakpoints cannot be inserted or removed. */ |
1597 | return 0; | |
1598 | ||
74960c60 VP |
1599 | /* The type of none suggests that owner is actually deleted. |
1600 | This should not ever happen. */ | |
1601 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1602 | |
1603 | if (b->loc_type == bp_loc_software_breakpoint | |
1604 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1605 | { |
c02f5703 MS |
1606 | /* "Normal" instruction breakpoint: either the standard |
1607 | trap-instruction bp (bp_breakpoint), or a | |
1608 | bp_hardware_breakpoint. */ | |
1609 | ||
1610 | /* First check to see if we have to handle an overlay. */ | |
1611 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1612 | || b->section == NULL |
1613 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1614 | { |
1615 | /* No overlay handling: just remove the breakpoint. */ | |
1616 | ||
0bde7532 | 1617 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1618 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1619 | else |
8181d85f | 1620 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1621 | } |
c906108c SS |
1622 | else |
1623 | { | |
c02f5703 MS |
1624 | /* This breakpoint is in an overlay section. |
1625 | Did we set a breakpoint at the LMA? */ | |
1626 | if (!overlay_events_enabled) | |
1627 | { | |
1628 | /* Yes -- overlay event support is not active, so we | |
1629 | should have set a breakpoint at the LMA. Remove it. | |
1630 | */ | |
c02f5703 MS |
1631 | /* Ignore any failures: if the LMA is in ROM, we will |
1632 | have already warned when we failed to insert it. */ | |
0bde7532 | 1633 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1634 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1635 | else |
8181d85f | 1636 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1637 | } |
1638 | /* Did we set a breakpoint at the VMA? | |
1639 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1640 | if (b->inserted) |
c906108c | 1641 | { |
c02f5703 MS |
1642 | /* Yes -- remove it. Previously we did not bother to |
1643 | remove the breakpoint if the section had been | |
1644 | unmapped, but let's not rely on that being safe. We | |
1645 | don't know what the overlay manager might do. */ | |
0bde7532 | 1646 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1647 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1648 | |
1649 | /* However, we should remove *software* breakpoints only | |
1650 | if the section is still mapped, or else we overwrite | |
1651 | wrong code with the saved shadow contents. */ | |
1652 | else if (section_is_mapped (b->section)) | |
8181d85f | 1653 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1654 | else |
1655 | val = 0; | |
c906108c | 1656 | } |
c02f5703 MS |
1657 | else |
1658 | { | |
1659 | /* No -- not inserted, so no need to remove. No error. */ | |
1660 | val = 0; | |
1661 | } | |
c906108c SS |
1662 | } |
1663 | if (val) | |
1664 | return val; | |
0bde7532 | 1665 | b->inserted = (is == mark_inserted); |
c906108c | 1666 | } |
a5606eee | 1667 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1668 | { |
278cd55f AC |
1669 | struct value *v; |
1670 | struct value *n; | |
c5aa993b | 1671 | |
0bde7532 | 1672 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1673 | val = target_remove_watchpoint (b->address, b->length, |
1674 | b->watchpoint_type); | |
2e70b7b9 | 1675 | |
c906108c | 1676 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1677 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1678 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1679 | b->owner->number); |
c906108c | 1680 | } |
0bde7532 DJ |
1681 | else if ((b->owner->type == bp_catch_fork || |
1682 | b->owner->type == bp_catch_vfork || | |
1683 | b->owner->type == bp_catch_exec) | |
468d015d | 1684 | && breakpoint_enabled (b->owner) |
0bde7532 | 1685 | && !b->duplicate) |
c906108c SS |
1686 | { |
1687 | val = -1; | |
0bde7532 | 1688 | switch (b->owner->type) |
c5aa993b JM |
1689 | { |
1690 | case bp_catch_fork: | |
39f77062 | 1691 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1692 | break; |
1693 | case bp_catch_vfork: | |
39f77062 | 1694 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1695 | break; |
1696 | case bp_catch_exec: | |
39f77062 | 1697 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1698 | break; |
ac9a91a7 | 1699 | default: |
8a3fe4f8 | 1700 | warning (_("Internal error, %s line %d."), __FILE__, __LINE__); |
ac9a91a7 | 1701 | break; |
c5aa993b | 1702 | } |
c906108c SS |
1703 | if (val) |
1704 | return val; | |
0bde7532 | 1705 | b->inserted = (is == mark_inserted); |
c906108c | 1706 | } |
c906108c SS |
1707 | |
1708 | return 0; | |
1709 | } | |
1710 | ||
1711 | /* Clear the "inserted" flag in all breakpoints. */ | |
1712 | ||
55a3f01f | 1713 | static void |
fba45db2 | 1714 | mark_breakpoints_out (void) |
c906108c | 1715 | { |
075f6582 | 1716 | struct bp_location *bpt; |
c906108c | 1717 | |
075f6582 DJ |
1718 | ALL_BP_LOCATIONS (bpt) |
1719 | bpt->inserted = 0; | |
c906108c SS |
1720 | } |
1721 | ||
53a5351d JM |
1722 | /* Clear the "inserted" flag in all breakpoints and delete any |
1723 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1724 | |
1725 | Plus other such housekeeping that has to be done for breakpoints | |
1726 | between runs. | |
1727 | ||
53a5351d JM |
1728 | Note: this function gets called at the end of a run (by |
1729 | generic_mourn_inferior) and when a run begins (by | |
1730 | init_wait_for_inferior). */ | |
c906108c SS |
1731 | |
1732 | ||
1733 | ||
1734 | void | |
fba45db2 | 1735 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1736 | { |
52f0bd74 | 1737 | struct breakpoint *b, *temp; |
075f6582 | 1738 | struct bp_location *bpt; |
c906108c | 1739 | |
075f6582 DJ |
1740 | ALL_BP_LOCATIONS (bpt) |
1741 | bpt->inserted = 0; | |
1742 | ||
c906108c | 1743 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1744 | { |
c5aa993b JM |
1745 | switch (b->type) |
1746 | { | |
1747 | case bp_call_dummy: | |
1748 | case bp_watchpoint_scope: | |
c906108c | 1749 | |
c5aa993b JM |
1750 | /* If the call dummy breakpoint is at the entry point it will |
1751 | cause problems when the inferior is rerun, so we better | |
1752 | get rid of it. | |
c906108c | 1753 | |
c5aa993b JM |
1754 | Also get rid of scope breakpoints. */ |
1755 | delete_breakpoint (b); | |
1756 | break; | |
c906108c | 1757 | |
c5aa993b JM |
1758 | case bp_watchpoint: |
1759 | case bp_hardware_watchpoint: | |
1760 | case bp_read_watchpoint: | |
1761 | case bp_access_watchpoint: | |
c906108c | 1762 | |
c5aa993b JM |
1763 | /* Likewise for watchpoints on local expressions. */ |
1764 | if (b->exp_valid_block != NULL) | |
1765 | delete_breakpoint (b); | |
967af18d | 1766 | else if (context == inf_starting) |
c860120c PM |
1767 | { |
1768 | /* Reset val field to force reread of starting value | |
1769 | in insert_breakpoints. */ | |
1770 | if (b->val) | |
1771 | value_free (b->val); | |
1772 | b->val = NULL; | |
fa4727a6 | 1773 | b->val_valid = 0; |
c860120c | 1774 | } |
c5aa993b JM |
1775 | break; |
1776 | default: | |
c5aa993b JM |
1777 | break; |
1778 | } | |
1779 | } | |
c906108c SS |
1780 | } |
1781 | ||
c2c6d25f JM |
1782 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1783 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1784 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1785 | permanent breakpoint. | |
1786 | - When continuing from a location with an ordinary breakpoint, we | |
1787 | actually single step once before calling insert_breakpoints. | |
1788 | - When continuing from a localion with a permanent breakpoint, we | |
1789 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1790 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1791 | |
c2c6d25f | 1792 | enum breakpoint_here |
fba45db2 | 1793 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1794 | { |
89f9893c | 1795 | const struct bp_location *bpt; |
c2c6d25f | 1796 | int any_breakpoint_here = 0; |
c906108c | 1797 | |
075f6582 DJ |
1798 | ALL_BP_LOCATIONS (bpt) |
1799 | { | |
1800 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1801 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1802 | continue; | |
1803 | ||
468d015d | 1804 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1805 | || bpt->owner->enable_state == bp_permanent) |
1806 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1807 | { | |
1808 | if (overlay_debugging | |
1809 | && section_is_overlay (bpt->section) | |
1810 | && !section_is_mapped (bpt->section)) | |
1811 | continue; /* unmapped overlay -- can't be a match */ | |
1812 | else if (bpt->owner->enable_state == bp_permanent) | |
1813 | return permanent_breakpoint_here; | |
1814 | else | |
1815 | any_breakpoint_here = 1; | |
1816 | } | |
1817 | } | |
c906108c | 1818 | |
c2c6d25f | 1819 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1820 | } |
1821 | ||
c2c6d25f | 1822 | |
c36b740a VP |
1823 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1824 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1825 | This does not check for single-step breakpoints, which are | |
1826 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1827 | |
1828 | int | |
c36b740a | 1829 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1830 | { |
89f9893c | 1831 | const struct bp_location *bpt; |
c906108c | 1832 | |
075f6582 | 1833 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1834 | { |
075f6582 DJ |
1835 | if (bpt->loc_type != bp_loc_software_breakpoint |
1836 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1837 | continue; | |
1838 | ||
1839 | if (bpt->inserted | |
1840 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1841 | { | |
1842 | if (overlay_debugging | |
1843 | && section_is_overlay (bpt->section) | |
1844 | && !section_is_mapped (bpt->section)) | |
1845 | continue; /* unmapped overlay -- can't be a match */ | |
1846 | else | |
1847 | return 1; | |
1848 | } | |
c5aa993b | 1849 | } |
c36b740a VP |
1850 | return 0; |
1851 | } | |
1852 | ||
1853 | /* Returns non-zero iff there's either regular breakpoint | |
1854 | or a single step breakpoint inserted at PC. */ | |
1855 | ||
1856 | int | |
1857 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1858 | { | |
1859 | if (regular_breakpoint_inserted_here_p (pc)) | |
1860 | return 1; | |
c906108c | 1861 | |
1aafd4da UW |
1862 | if (single_step_breakpoint_inserted_here_p (pc)) |
1863 | return 1; | |
1864 | ||
c906108c SS |
1865 | return 0; |
1866 | } | |
1867 | ||
4fa8626c DJ |
1868 | /* This function returns non-zero iff there is a software breakpoint |
1869 | inserted at PC. */ | |
1870 | ||
1871 | int | |
1872 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1873 | { | |
89f9893c | 1874 | const struct bp_location *bpt; |
4fa8626c DJ |
1875 | int any_breakpoint_here = 0; |
1876 | ||
1877 | ALL_BP_LOCATIONS (bpt) | |
1878 | { | |
1879 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1880 | continue; | |
1881 | ||
0d381245 | 1882 | if (bpt->inserted |
4fa8626c DJ |
1883 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1884 | { | |
1885 | if (overlay_debugging | |
1886 | && section_is_overlay (bpt->section) | |
1887 | && !section_is_mapped (bpt->section)) | |
1888 | continue; /* unmapped overlay -- can't be a match */ | |
1889 | else | |
1890 | return 1; | |
1891 | } | |
1892 | } | |
1893 | ||
1aafd4da UW |
1894 | /* Also check for software single-step breakpoints. */ |
1895 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1896 | return 1; | |
1897 | ||
4fa8626c DJ |
1898 | return 0; |
1899 | } | |
1900 | ||
075f6582 DJ |
1901 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1902 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1903 | |
1904 | int | |
39f77062 | 1905 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1906 | { |
89f9893c | 1907 | const struct bp_location *bpt; |
c906108c SS |
1908 | int thread; |
1909 | ||
39f77062 | 1910 | thread = pid_to_thread_id (ptid); |
c906108c | 1911 | |
075f6582 | 1912 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1913 | { |
075f6582 DJ |
1914 | if (bpt->loc_type != bp_loc_software_breakpoint |
1915 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1916 | continue; | |
1917 | ||
468d015d | 1918 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1919 | || bpt->owner->enable_state == bp_permanent) |
1920 | && bpt->address == pc | |
1921 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1922 | { | |
1923 | if (overlay_debugging | |
1924 | && section_is_overlay (bpt->section) | |
1925 | && !section_is_mapped (bpt->section)) | |
1926 | continue; /* unmapped overlay -- can't be a match */ | |
1927 | else | |
1928 | return 1; | |
1929 | } | |
c5aa993b | 1930 | } |
c906108c SS |
1931 | |
1932 | return 0; | |
1933 | } | |
c906108c | 1934 | \f |
c5aa993b | 1935 | |
c906108c SS |
1936 | /* bpstat stuff. External routines' interfaces are documented |
1937 | in breakpoint.h. */ | |
1938 | ||
1939 | int | |
fba45db2 | 1940 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1941 | { |
1942 | return | |
1943 | (ep->type == bp_catch_load) | |
1944 | || (ep->type == bp_catch_unload) | |
1945 | || (ep->type == bp_catch_fork) | |
1946 | || (ep->type == bp_catch_vfork) | |
dfdfb3ca | 1947 | || (ep->type == bp_catch_exec); |
c906108c | 1948 | |
c5aa993b | 1949 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1950 | } |
c5aa993b | 1951 | |
c906108c | 1952 | int |
fba45db2 | 1953 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1954 | { |
1955 | return | |
1956 | (ep->type == bp_catch_load) | |
d85310f7 | 1957 | || (ep->type == bp_catch_unload); |
c906108c SS |
1958 | } |
1959 | ||
198757a8 VP |
1960 | void |
1961 | bpstat_free (bpstat bs) | |
1962 | { | |
1963 | if (bs->old_val != NULL) | |
1964 | value_free (bs->old_val); | |
1965 | free_command_lines (&bs->commands); | |
1966 | xfree (bs); | |
1967 | } | |
1968 | ||
c906108c SS |
1969 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1970 | Also free any storage that is part of a bpstat. */ | |
1971 | ||
1972 | void | |
fba45db2 | 1973 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1974 | { |
1975 | bpstat p; | |
1976 | bpstat q; | |
1977 | ||
1978 | if (bsp == 0) | |
1979 | return; | |
1980 | p = *bsp; | |
1981 | while (p != NULL) | |
1982 | { | |
1983 | q = p->next; | |
198757a8 | 1984 | bpstat_free (p); |
c906108c SS |
1985 | p = q; |
1986 | } | |
1987 | *bsp = NULL; | |
1988 | } | |
1989 | ||
1990 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1991 | is part of the bpstat is copied as well. */ | |
1992 | ||
1993 | bpstat | |
fba45db2 | 1994 | bpstat_copy (bpstat bs) |
c906108c SS |
1995 | { |
1996 | bpstat p = NULL; | |
1997 | bpstat tmp; | |
1998 | bpstat retval = NULL; | |
1999 | ||
2000 | if (bs == NULL) | |
2001 | return bs; | |
2002 | ||
2003 | for (; bs != NULL; bs = bs->next) | |
2004 | { | |
2005 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2006 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2007 | if (bs->commands != NULL) |
2008 | tmp->commands = copy_command_lines (bs->commands); | |
2009 | if (bs->old_val != NULL) | |
2010 | tmp->old_val = value_copy (bs->old_val); | |
2011 | ||
c906108c SS |
2012 | if (p == NULL) |
2013 | /* This is the first thing in the chain. */ | |
2014 | retval = tmp; | |
2015 | else | |
2016 | p->next = tmp; | |
2017 | p = tmp; | |
2018 | } | |
2019 | p->next = NULL; | |
2020 | return retval; | |
2021 | } | |
2022 | ||
2023 | /* Find the bpstat associated with this breakpoint */ | |
2024 | ||
2025 | bpstat | |
fba45db2 | 2026 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2027 | { |
c5aa993b JM |
2028 | if (bsp == NULL) |
2029 | return NULL; | |
c906108c | 2030 | |
c5aa993b JM |
2031 | for (; bsp != NULL; bsp = bsp->next) |
2032 | { | |
4f8d1dc6 | 2033 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2034 | return bsp; |
2035 | } | |
c906108c SS |
2036 | return NULL; |
2037 | } | |
2038 | ||
2039 | /* Find a step_resume breakpoint associated with this bpstat. | |
2040 | (If there are multiple step_resume bp's on the list, this function | |
2041 | will arbitrarily pick one.) | |
2042 | ||
2043 | It is an error to use this function if BPSTAT doesn't contain a | |
2044 | step_resume breakpoint. | |
2045 | ||
2046 | See wait_for_inferior's use of this function. */ | |
2047 | struct breakpoint * | |
fba45db2 | 2048 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2049 | { |
8601f500 MS |
2050 | int current_thread; |
2051 | ||
8a3fe4f8 | 2052 | gdb_assert (bsp != NULL); |
c906108c | 2053 | |
8601f500 MS |
2054 | current_thread = pid_to_thread_id (inferior_ptid); |
2055 | ||
c906108c SS |
2056 | for (; bsp != NULL; bsp = bsp->next) |
2057 | { | |
2058 | if ((bsp->breakpoint_at != NULL) && | |
4f8d1dc6 VP |
2059 | (bsp->breakpoint_at->owner->type == bp_step_resume) && |
2060 | (bsp->breakpoint_at->owner->thread == current_thread || | |
2061 | bsp->breakpoint_at->owner->thread == -1)) | |
2062 | return bsp->breakpoint_at->owner; | |
c906108c SS |
2063 | } |
2064 | ||
8a3fe4f8 | 2065 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2066 | } |
2067 | ||
2068 | ||
8671a17b | 2069 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2070 | at. *BSP upon return is a bpstat which points to the remaining |
2071 | breakpoints stopped at (but which is not guaranteed to be good for | |
2072 | anything but further calls to bpstat_num). | |
8671a17b PA |
2073 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2074 | Return -1 if stopped at a breakpoint that has been deleted since | |
2075 | we set it. | |
2076 | Return 1 otherwise. */ | |
c906108c SS |
2077 | |
2078 | int | |
8671a17b | 2079 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2080 | { |
2081 | struct breakpoint *b; | |
2082 | ||
2083 | if ((*bsp) == NULL) | |
2084 | return 0; /* No more breakpoint values */ | |
8671a17b | 2085 | |
4f8d1dc6 VP |
2086 | /* We assume we'll never have several bpstats that |
2087 | correspond to a single breakpoint -- otherwise, | |
2088 | this function might return the same number more | |
2089 | than once and this will look ugly. */ | |
2090 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2091 | *bsp = (*bsp)->next; |
2092 | if (b == NULL) | |
2093 | return -1; /* breakpoint that's been deleted since */ | |
2094 | ||
2095 | *num = b->number; /* We have its number */ | |
2096 | return 1; | |
c906108c SS |
2097 | } |
2098 | ||
2099 | /* Modify BS so that the actions will not be performed. */ | |
2100 | ||
2101 | void | |
fba45db2 | 2102 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2103 | { |
2104 | for (; bs != NULL; bs = bs->next) | |
2105 | { | |
c2b8ed2c | 2106 | free_command_lines (&bs->commands); |
c906108c SS |
2107 | if (bs->old_val != NULL) |
2108 | { | |
2109 | value_free (bs->old_val); | |
2110 | bs->old_val = NULL; | |
2111 | } | |
2112 | } | |
2113 | } | |
2114 | ||
2115 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2116 | static void |
4efb68b1 | 2117 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2118 | { |
2119 | executing_breakpoint_commands = 0; | |
2120 | } | |
2121 | ||
2122 | /* Execute all the commands associated with all the breakpoints at this | |
2123 | location. Any of these commands could cause the process to proceed | |
2124 | beyond this point, etc. We look out for such changes by checking | |
2125 | the global "breakpoint_proceeded" after each command. */ | |
2126 | ||
2127 | void | |
fba45db2 | 2128 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2129 | { |
2130 | bpstat bs; | |
2131 | struct cleanup *old_chain; | |
c906108c SS |
2132 | |
2133 | /* Avoid endless recursion if a `source' command is contained | |
2134 | in bs->commands. */ | |
2135 | if (executing_breakpoint_commands) | |
2136 | return; | |
2137 | ||
2138 | executing_breakpoint_commands = 1; | |
2139 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2140 | ||
2141 | top: | |
2142 | /* Note that (as of this writing), our callers all appear to | |
2143 | be passing us the address of global stop_bpstat. And, if | |
2144 | our calls to execute_control_command cause the inferior to | |
2145 | proceed, that global (and hence, *bsp) will change. | |
2146 | ||
2147 | We must be careful to not touch *bsp unless the inferior | |
2148 | has not proceeded. */ | |
2149 | ||
2150 | /* This pointer will iterate over the list of bpstat's. */ | |
2151 | bs = *bsp; | |
2152 | ||
2153 | breakpoint_proceeded = 0; | |
2154 | for (; bs != NULL; bs = bs->next) | |
2155 | { | |
6c50ab1c JB |
2156 | struct command_line *cmd; |
2157 | struct cleanup *this_cmd_tree_chain; | |
2158 | ||
2159 | /* Take ownership of the BSP's command tree, if it has one. | |
2160 | ||
2161 | The command tree could legitimately contain commands like | |
2162 | 'step' and 'next', which call clear_proceed_status, which | |
2163 | frees stop_bpstat's command tree. To make sure this doesn't | |
2164 | free the tree we're executing out from under us, we need to | |
2165 | take ownership of the tree ourselves. Since a given bpstat's | |
2166 | commands are only executed once, we don't need to copy it; we | |
2167 | can clear the pointer in the bpstat, and make sure we free | |
2168 | the tree when we're done. */ | |
c906108c | 2169 | cmd = bs->commands; |
6c50ab1c JB |
2170 | bs->commands = 0; |
2171 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2172 | ||
c906108c SS |
2173 | while (cmd != NULL) |
2174 | { | |
2175 | execute_control_command (cmd); | |
2176 | ||
2177 | if (breakpoint_proceeded) | |
2178 | break; | |
2179 | else | |
2180 | cmd = cmd->next; | |
2181 | } | |
6c50ab1c JB |
2182 | |
2183 | /* We can free this command tree now. */ | |
2184 | do_cleanups (this_cmd_tree_chain); | |
2185 | ||
c906108c | 2186 | if (breakpoint_proceeded) |
32c1e744 VP |
2187 | { |
2188 | if (target_can_async_p ()) | |
2189 | /* If we are in async mode, then the target might | |
2190 | be still running, not stopped at any breakpoint, | |
2191 | so nothing for us to do here -- just return to | |
2192 | the event loop. */ | |
2193 | break; | |
2194 | else | |
2195 | /* In sync mode, when execute_control_command returns | |
2196 | we're already standing on the next breakpoint. | |
2197 | Breakpoint commands for that stop were not run, | |
2198 | since execute_command does not run breakpoint | |
2199 | commands -- only command_line_handler does, but | |
2200 | that one is not involved in execution of breakpoint | |
2201 | commands. So, we can now execute breakpoint commands. | |
2202 | There's an implicit assumption that we're called with | |
2203 | stop_bpstat, so our parameter is the new bpstat to | |
2204 | handle. | |
2205 | It should be noted that making execute_command do | |
2206 | bpstat actions is not an option -- in this case we'll | |
2207 | have recursive invocation of bpstat for each breakpoint | |
2208 | with a command, and can easily blow up GDB stack. */ | |
2209 | goto top; | |
2210 | } | |
c906108c | 2211 | } |
c2b8ed2c | 2212 | do_cleanups (old_chain); |
c906108c SS |
2213 | } |
2214 | ||
fa4727a6 DJ |
2215 | /* Print out the (old or new) value associated with a watchpoint. */ |
2216 | ||
2217 | static void | |
2218 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2219 | { | |
2220 | if (val == NULL) | |
2221 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2222 | else | |
2223 | value_print (val, stream, 0, Val_pretty_default); | |
2224 | } | |
2225 | ||
e514a9d6 | 2226 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2227 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2228 | by having it set different print_it values. |
2229 | ||
2230 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2231 | through the bpstat list of things causing this stop, calling the | |
2232 | print_bp_stop_message function on each one. The behavior of the | |
2233 | print_bp_stop_message function depends on the print_it field of | |
2234 | bpstat. If such field so indicates, call this function here. | |
2235 | ||
2236 | Return values from this routine (ultimately used by bpstat_print() | |
2237 | and normal_stop() to decide what to do): | |
2238 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2239 | don't print anything else. | |
2240 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2241 | that something to be followed by a location. | |
2242 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2243 | that something to be followed by a location. | |
2244 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2245 | analysis. */ | |
c906108c | 2246 | |
917317f4 | 2247 | static enum print_stop_action |
fba45db2 | 2248 | print_it_typical (bpstat bs) |
c906108c | 2249 | { |
3b31d625 | 2250 | struct cleanup *old_chain, *ui_out_chain; |
4f8d1dc6 | 2251 | struct breakpoint *b; |
89f9893c | 2252 | const struct bp_location *bl; |
8b93c638 | 2253 | struct ui_stream *stb; |
2cec12e5 | 2254 | int bp_temp = 0; |
8b93c638 | 2255 | stb = ui_out_stream_new (uiout); |
b02eeafb | 2256 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2257 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2258 | which has since been deleted. */ | |
e514a9d6 | 2259 | if (bs->breakpoint_at == NULL) |
917317f4 | 2260 | return PRINT_UNKNOWN; |
0d381245 VP |
2261 | bl = bs->breakpoint_at; |
2262 | b = bl->owner; | |
c906108c | 2263 | |
4f8d1dc6 | 2264 | switch (b->type) |
c906108c | 2265 | { |
e514a9d6 JM |
2266 | case bp_breakpoint: |
2267 | case bp_hardware_breakpoint: | |
2cec12e5 | 2268 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2269 | if (bl->address != bl->requested_address) |
2270 | breakpoint_adjustment_warning (bl->requested_address, | |
2271 | bl->address, | |
4f8d1dc6 VP |
2272 | b->number, 1); |
2273 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2274 | if (bp_temp) |
2275 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2276 | else | |
2277 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2278 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2279 | { |
2280 | ui_out_field_string (uiout, "reason", | |
2281 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2282 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2283 | } | |
4f8d1dc6 | 2284 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 JM |
2285 | ui_out_text (uiout, ", "); |
2286 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2287 | break; |
2288 | ||
2289 | case bp_shlib_event: | |
917317f4 JM |
2290 | /* Did we stop because the user set the stop_on_solib_events |
2291 | variable? (If so, we report this as a generic, "Stopped due | |
2292 | to shlib event" message.) */ | |
a3f17187 | 2293 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2294 | return PRINT_NOTHING; |
2295 | break; | |
2296 | ||
c4093a6a JM |
2297 | case bp_thread_event: |
2298 | /* Not sure how we will get here. | |
2299 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2300 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2301 | return PRINT_NOTHING; |
2302 | break; | |
2303 | ||
1900040c MS |
2304 | case bp_overlay_event: |
2305 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2306 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2307 | return PRINT_NOTHING; |
2308 | break; | |
2309 | ||
e514a9d6 | 2310 | case bp_catch_load: |
4f8d1dc6 | 2311 | annotate_catchpoint (b->number); |
a3f17187 | 2312 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
4f8d1dc6 VP |
2313 | b->number, |
2314 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2315 | return PRINT_SRC_AND_LOC; |
2316 | break; | |
2317 | ||
2318 | case bp_catch_unload: | |
4f8d1dc6 | 2319 | annotate_catchpoint (b->number); |
a3f17187 | 2320 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
4f8d1dc6 VP |
2321 | b->number, |
2322 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2323 | return PRINT_SRC_AND_LOC; |
2324 | break; | |
2325 | ||
2326 | case bp_catch_fork: | |
4f8d1dc6 | 2327 | annotate_catchpoint (b->number); |
a3f17187 | 2328 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), |
4f8d1dc6 VP |
2329 | b->number, |
2330 | b->forked_inferior_pid); | |
917317f4 | 2331 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2332 | break; |
2333 | ||
2334 | case bp_catch_vfork: | |
4f8d1dc6 | 2335 | annotate_catchpoint (b->number); |
a3f17187 | 2336 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), |
4f8d1dc6 VP |
2337 | b->number, |
2338 | b->forked_inferior_pid); | |
e514a9d6 JM |
2339 | return PRINT_SRC_AND_LOC; |
2340 | break; | |
2341 | ||
2342 | case bp_catch_exec: | |
4f8d1dc6 | 2343 | annotate_catchpoint (b->number); |
a3f17187 | 2344 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), |
4f8d1dc6 VP |
2345 | b->number, |
2346 | b->exec_pathname); | |
917317f4 | 2347 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2348 | break; |
2349 | ||
e514a9d6 JM |
2350 | case bp_watchpoint: |
2351 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2352 | annotate_watchpoint (b->number); |
2353 | if (ui_out_is_mi_like_p (uiout)) | |
2354 | ui_out_field_string | |
2355 | (uiout, "reason", | |
2356 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2357 | mention (b); | |
2358 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
2359 | ui_out_text (uiout, "\nOld value = "); | |
2360 | watchpoint_value_print (bs->old_val, stb->stream); | |
2361 | ui_out_field_stream (uiout, "old", stb); | |
2362 | ui_out_text (uiout, "\nNew value = "); | |
2363 | watchpoint_value_print (b->val, stb->stream); | |
2364 | ui_out_field_stream (uiout, "new", stb); | |
2365 | do_cleanups (ui_out_chain); | |
2366 | ui_out_text (uiout, "\n"); | |
e514a9d6 JM |
2367 | /* More than one watchpoint may have been triggered. */ |
2368 | return PRINT_UNKNOWN; | |
2369 | break; | |
2370 | ||
2371 | case bp_read_watchpoint: | |
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_READ_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, "\nValue = "); |
fa4727a6 | 2379 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2380 | ui_out_field_stream (uiout, "value", stb); |
3b31d625 | 2381 | do_cleanups (ui_out_chain); |
8b93c638 | 2382 | ui_out_text (uiout, "\n"); |
917317f4 | 2383 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2384 | break; |
2385 | ||
2386 | case bp_access_watchpoint: | |
fa4727a6 | 2387 | if (bs->old_val != NULL) |
8b93c638 | 2388 | { |
4f8d1dc6 | 2389 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2390 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2391 | ui_out_field_string |
2392 | (uiout, "reason", | |
2393 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2394 | mention (b); |
3b31d625 | 2395 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2396 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2397 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2398 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2399 | ui_out_text (uiout, "\nNew value = "); |
2400 | } | |
2401 | else | |
2402 | { | |
4f8d1dc6 | 2403 | mention (b); |
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_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2408 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2409 | ui_out_text (uiout, "\nValue = "); |
2410 | } | |
fa4727a6 | 2411 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2412 | ui_out_field_stream (uiout, "new", stb); |
3b31d625 | 2413 | do_cleanups (ui_out_chain); |
8b93c638 | 2414 | ui_out_text (uiout, "\n"); |
917317f4 | 2415 | return PRINT_UNKNOWN; |
e514a9d6 | 2416 | break; |
4ce44c66 | 2417 | |
e514a9d6 JM |
2418 | /* Fall through, we don't deal with these types of breakpoints |
2419 | here. */ | |
2420 | ||
11cf8741 | 2421 | case bp_finish: |
9dc5e2a9 | 2422 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2423 | ui_out_field_string |
2424 | (uiout, "reason", | |
2425 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2426 | return PRINT_UNKNOWN; |
2427 | break; | |
2428 | ||
e514a9d6 | 2429 | case bp_until: |
9dc5e2a9 | 2430 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2431 | ui_out_field_string |
2432 | (uiout, "reason", | |
2433 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2434 | return PRINT_UNKNOWN; |
2435 | break; | |
2436 | ||
c2d11a7d | 2437 | case bp_none: |
e514a9d6 JM |
2438 | case bp_longjmp: |
2439 | case bp_longjmp_resume: | |
2440 | case bp_step_resume: | |
e514a9d6 JM |
2441 | case bp_watchpoint_scope: |
2442 | case bp_call_dummy: | |
2443 | default: | |
2444 | return PRINT_UNKNOWN; | |
2445 | } | |
2446 | } | |
2447 | ||
2448 | /* Generic routine for printing messages indicating why we | |
2449 | stopped. The behavior of this function depends on the value | |
2450 | 'print_it' in the bpstat structure. Under some circumstances we | |
2451 | may decide not to print anything here and delegate the task to | |
2452 | normal_stop(). */ | |
2453 | ||
2454 | static enum print_stop_action | |
2455 | print_bp_stop_message (bpstat bs) | |
2456 | { | |
2457 | switch (bs->print_it) | |
2458 | { | |
2459 | case print_it_noop: | |
2460 | /* Nothing should be printed for this bpstat entry. */ | |
2461 | return PRINT_UNKNOWN; | |
2462 | break; | |
2463 | ||
2464 | case print_it_done: | |
2465 | /* We still want to print the frame, but we already printed the | |
2466 | relevant messages. */ | |
2467 | return PRINT_SRC_AND_LOC; | |
2468 | break; | |
2469 | ||
2470 | case print_it_normal: | |
4f8d1dc6 | 2471 | { |
89f9893c | 2472 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2473 | struct breakpoint *b = bl ? bl->owner : NULL; |
2474 | ||
2475 | /* Normal case. Call the breakpoint's print_it method, or | |
2476 | print_it_typical. */ | |
2477 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2478 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2479 | return b->ops->print_it (b); | |
2480 | else | |
2481 | return print_it_typical (bs); | |
2482 | } | |
2483 | break; | |
3086aeae | 2484 | |
e514a9d6 | 2485 | default: |
8e65ff28 | 2486 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2487 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2488 | break; |
c906108c | 2489 | } |
c906108c SS |
2490 | } |
2491 | ||
e514a9d6 JM |
2492 | /* Print a message indicating what happened. This is called from |
2493 | normal_stop(). The input to this routine is the head of the bpstat | |
2494 | list - a list of the eventpoints that caused this stop. This | |
2495 | routine calls the generic print routine for printing a message | |
2496 | about reasons for stopping. This will print (for example) the | |
2497 | "Breakpoint n," part of the output. The return value of this | |
2498 | routine is one of: | |
c906108c | 2499 | |
917317f4 JM |
2500 | PRINT_UNKNOWN: Means we printed nothing |
2501 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2502 | code to print the location. An example is |
2503 | "Breakpoint 1, " which should be followed by | |
2504 | the location. | |
917317f4 | 2505 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2506 | to also print the location part of the message. |
2507 | An example is the catch/throw messages, which | |
917317f4 JM |
2508 | don't require a location appended to the end. |
2509 | PRINT_NOTHING: We have done some printing and we don't need any | |
2510 | further info to be printed.*/ | |
c906108c | 2511 | |
917317f4 | 2512 | enum print_stop_action |
fba45db2 | 2513 | bpstat_print (bpstat bs) |
c906108c SS |
2514 | { |
2515 | int val; | |
c5aa993b | 2516 | |
c906108c | 2517 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2518 | (Currently all watchpoints go on the bpstat whether hit or not. |
2519 | That probably could (should) be changed, provided care is taken | |
c906108c | 2520 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2521 | for (; bs; bs = bs->next) |
2522 | { | |
2523 | val = print_bp_stop_message (bs); | |
2524 | if (val == PRINT_SRC_ONLY | |
2525 | || val == PRINT_SRC_AND_LOC | |
2526 | || val == PRINT_NOTHING) | |
2527 | return val; | |
2528 | } | |
c906108c | 2529 | |
e514a9d6 JM |
2530 | /* We reached the end of the chain, or we got a null BS to start |
2531 | with and nothing was printed. */ | |
917317f4 | 2532 | return PRINT_UNKNOWN; |
c906108c SS |
2533 | } |
2534 | ||
2535 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2536 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2537 | The argument is a "struct expression *" that has been cast to char * to | |
2538 | make it pass through catch_errors. */ | |
2539 | ||
2540 | static int | |
4efb68b1 | 2541 | breakpoint_cond_eval (void *exp) |
c906108c | 2542 | { |
278cd55f | 2543 | struct value *mark = value_mark (); |
c5aa993b | 2544 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2545 | value_free_to_mark (mark); |
2546 | return i; | |
2547 | } | |
2548 | ||
2549 | /* Allocate a new bpstat and chain it to the current one. */ | |
2550 | ||
2551 | static bpstat | |
89f9893c | 2552 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2553 | { |
2554 | bpstat bs; | |
2555 | ||
2556 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2557 | cbs->next = bs; | |
4f8d1dc6 | 2558 | bs->breakpoint_at = bl; |
c906108c SS |
2559 | /* If the condition is false, etc., don't do the commands. */ |
2560 | bs->commands = NULL; | |
2561 | bs->old_val = NULL; | |
2562 | bs->print_it = print_it_normal; | |
2563 | return bs; | |
2564 | } | |
2565 | \f | |
d983da9c DJ |
2566 | /* The target has stopped with waitstatus WS. Check if any hardware |
2567 | watchpoints have triggered, according to the target. */ | |
2568 | ||
2569 | int | |
2570 | watchpoints_triggered (struct target_waitstatus *ws) | |
2571 | { | |
2572 | int stopped_by_watchpoint = STOPPED_BY_WATCHPOINT (*ws); | |
2573 | CORE_ADDR addr; | |
2574 | struct breakpoint *b; | |
2575 | ||
2576 | if (!stopped_by_watchpoint) | |
2577 | { | |
2578 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2579 | as not triggered. */ | |
2580 | ALL_BREAKPOINTS (b) | |
2581 | if (b->type == bp_hardware_watchpoint | |
2582 | || b->type == bp_read_watchpoint | |
2583 | || b->type == bp_access_watchpoint) | |
2584 | b->watchpoint_triggered = watch_triggered_no; | |
2585 | ||
2586 | return 0; | |
2587 | } | |
2588 | ||
2589 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2590 | { | |
2591 | /* We were stopped by a watchpoint, but we don't know where. | |
2592 | Mark all watchpoints as unknown. */ | |
2593 | ALL_BREAKPOINTS (b) | |
2594 | if (b->type == bp_hardware_watchpoint | |
2595 | || b->type == bp_read_watchpoint | |
2596 | || b->type == bp_access_watchpoint) | |
2597 | b->watchpoint_triggered = watch_triggered_unknown; | |
2598 | ||
2599 | return stopped_by_watchpoint; | |
2600 | } | |
2601 | ||
2602 | /* The target could report the data address. Mark watchpoints | |
2603 | affected by this data address as triggered, and all others as not | |
2604 | triggered. */ | |
2605 | ||
2606 | ALL_BREAKPOINTS (b) | |
2607 | if (b->type == bp_hardware_watchpoint | |
2608 | || b->type == bp_read_watchpoint | |
2609 | || b->type == bp_access_watchpoint) | |
2610 | { | |
a5606eee | 2611 | struct bp_location *loc; |
d983da9c DJ |
2612 | struct value *v; |
2613 | ||
2614 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2615 | for (loc = b->loc; loc; loc = loc->next) |
2616 | /* Exact match not required. Within range is | |
2617 | sufficient. */ | |
2618 | if (addr >= loc->address | |
2619 | && addr < loc->address + loc->length) | |
2620 | { | |
2621 | b->watchpoint_triggered = watch_triggered_yes; | |
2622 | break; | |
2623 | } | |
d983da9c DJ |
2624 | } |
2625 | ||
2626 | return 1; | |
2627 | } | |
2628 | ||
c906108c SS |
2629 | /* Possible return values for watchpoint_check (this can't be an enum |
2630 | because of check_errors). */ | |
2631 | /* The watchpoint has been deleted. */ | |
2632 | #define WP_DELETED 1 | |
2633 | /* The value has changed. */ | |
2634 | #define WP_VALUE_CHANGED 2 | |
2635 | /* The value has not changed. */ | |
2636 | #define WP_VALUE_NOT_CHANGED 3 | |
2637 | ||
2638 | #define BP_TEMPFLAG 1 | |
2639 | #define BP_HARDWAREFLAG 2 | |
2640 | ||
2641 | /* Check watchpoint condition. */ | |
2642 | ||
2643 | static int | |
4efb68b1 | 2644 | watchpoint_check (void *p) |
c906108c SS |
2645 | { |
2646 | bpstat bs = (bpstat) p; | |
2647 | struct breakpoint *b; | |
2648 | struct frame_info *fr; | |
2649 | int within_current_scope; | |
2650 | ||
4f8d1dc6 | 2651 | b = bs->breakpoint_at->owner; |
c906108c SS |
2652 | |
2653 | if (b->exp_valid_block == NULL) | |
2654 | within_current_scope = 1; | |
2655 | else | |
2656 | { | |
2657 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2658 | any chance of handling watchpoints on local variables, we'll need |
2659 | the frame chain (so we can determine if we're in scope). */ | |
2660 | reinit_frame_cache (); | |
101dcfbe | 2661 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2662 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2663 | |
2664 | /* If we've gotten confused in the unwinder, we might have | |
2665 | returned a frame that can't describe this variable. */ | |
2666 | if (within_current_scope | |
2667 | && block_function (b->exp_valid_block) != get_frame_function (fr)) | |
2668 | within_current_scope = 0; | |
2669 | ||
c12260ac CV |
2670 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2671 | in the function but the stack frame has already been invalidated. | |
2672 | Since we can't rely on the values of local variables after the | |
2673 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2674 | state as `not changed' without further checking. |
2675 | ||
2676 | vinschen/2003-09-04: The former implementation left out the case | |
2677 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2678 | because the current PC is currently in an epilogue. Calling | |
2679 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2680 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2681 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2682 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2683 | if (fr && within_current_scope) |
c906108c SS |
2684 | /* If we end up stopping, the current frame will get selected |
2685 | in normal_stop. So this call to select_frame won't affect | |
2686 | the user. */ | |
0f7d239c | 2687 | select_frame (fr); |
c906108c | 2688 | } |
c5aa993b | 2689 | |
c906108c SS |
2690 | if (within_current_scope) |
2691 | { | |
2692 | /* We use value_{,free_to_}mark because it could be a | |
2693 | *long* time before we return to the command level and | |
c5aa993b JM |
2694 | call free_all_values. We can't call free_all_values because |
2695 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2696 | |
278cd55f | 2697 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2698 | struct value *new_val; |
2699 | ||
2700 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2701 | if ((b->val != NULL) != (new_val != NULL) | |
2702 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2703 | { |
fa4727a6 DJ |
2704 | if (new_val != NULL) |
2705 | { | |
2706 | release_value (new_val); | |
2707 | value_free_to_mark (mark); | |
2708 | } | |
c906108c SS |
2709 | bs->old_val = b->val; |
2710 | b->val = new_val; | |
fa4727a6 | 2711 | b->val_valid = 1; |
c906108c SS |
2712 | /* We will stop here */ |
2713 | return WP_VALUE_CHANGED; | |
2714 | } | |
2715 | else | |
2716 | { | |
2717 | /* Nothing changed, don't do anything. */ | |
2718 | value_free_to_mark (mark); | |
2719 | /* We won't stop here */ | |
2720 | return WP_VALUE_NOT_CHANGED; | |
2721 | } | |
2722 | } | |
2723 | else | |
2724 | { | |
2725 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2726 | if we temporarily ignored the watchpoint, then when |
2727 | we reenter the block in which it is valid it contains | |
2728 | garbage (in the case of a function, it may have two | |
2729 | garbage values, one before and one after the prologue). | |
2730 | So we can't even detect the first assignment to it and | |
2731 | watch after that (since the garbage may or may not equal | |
2732 | the first value assigned). */ | |
4ce44c66 JM |
2733 | /* We print all the stop information in print_it_typical(), but |
2734 | in this case, by the time we call print_it_typical() this bp | |
2735 | will be deleted already. So we have no choice but print the | |
2736 | information here. */ | |
9dc5e2a9 | 2737 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2738 | ui_out_field_string |
2739 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2740 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2741 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2742 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2743 | which its expression is valid.\n"); | |
4ce44c66 | 2744 | |
c906108c | 2745 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2746 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2747 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2748 | |
2749 | return WP_DELETED; | |
2750 | } | |
2751 | } | |
2752 | ||
9709f61c | 2753 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 2754 | BP_ADDR in thread PTID. |
c906108c | 2755 | |
d983da9c | 2756 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
2757 | don't understand this stop. Result is a chain of bpstat's such that: |
2758 | ||
c5aa993b | 2759 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2760 | |
c5aa993b | 2761 | if we understand why we stopped, the result is not null. |
c906108c | 2762 | |
c5aa993b JM |
2763 | Each element of the chain refers to a particular breakpoint or |
2764 | watchpoint at which we have stopped. (We may have stopped for | |
2765 | several reasons concurrently.) | |
c906108c | 2766 | |
c5aa993b JM |
2767 | Each element of the chain has valid next, breakpoint_at, |
2768 | commands, FIXME??? fields. */ | |
c906108c SS |
2769 | |
2770 | bpstat | |
d983da9c | 2771 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 2772 | { |
0d381245 | 2773 | struct breakpoint *b = NULL; |
89f9893c | 2774 | const struct bp_location *bl; |
c906108c SS |
2775 | /* Root of the chain of bpstat's */ |
2776 | struct bpstats root_bs[1]; | |
2777 | /* Pointer to the last thing in the chain currently. */ | |
2778 | bpstat bs = root_bs; | |
fa5281d0 | 2779 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2780 | |
0d381245 | 2781 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 2782 | { |
0d381245 VP |
2783 | b = bl->owner; |
2784 | gdb_assert (b); | |
468d015d | 2785 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2786 | continue; |
2787 | ||
2788 | if (b->type != bp_watchpoint | |
46587c42 JJ |
2789 | && b->type != bp_hardware_watchpoint |
2790 | && b->type != bp_read_watchpoint | |
2791 | && b->type != bp_access_watchpoint | |
c5aa993b JM |
2792 | && b->type != bp_hardware_breakpoint |
2793 | && b->type != bp_catch_fork | |
2794 | && b->type != bp_catch_vfork | |
dfdfb3ca | 2795 | && b->type != bp_catch_exec) /* a non-watchpoint bp */ |
9f04af04 | 2796 | { |
0d381245 | 2797 | if (bl->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2798 | continue; |
2799 | if (overlay_debugging /* unmapped overlay section */ | |
0d381245 VP |
2800 | && section_is_overlay (bl->section) |
2801 | && !section_is_mapped (bl->section)) | |
9f04af04 MS |
2802 | continue; |
2803 | } | |
c906108c | 2804 | |
d983da9c DJ |
2805 | /* Continuable hardware watchpoints are treated as non-existent if the |
2806 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2807 | some data address). Otherwise gdb won't stop on a break instruction | |
2808 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2809 | been defined. Also skip watchpoints which we know did not trigger | |
2810 | (did not match the data address). */ | |
46587c42 JJ |
2811 | |
2812 | if ((b->type == bp_hardware_watchpoint | |
2813 | || b->type == bp_read_watchpoint | |
2814 | || b->type == bp_access_watchpoint) | |
d983da9c | 2815 | && b->watchpoint_triggered == watch_triggered_no) |
46587c42 JJ |
2816 | continue; |
2817 | ||
c02f5703 MS |
2818 | if (b->type == bp_hardware_breakpoint) |
2819 | { | |
0d381245 | 2820 | if (bl->address != bp_addr) |
c02f5703 MS |
2821 | continue; |
2822 | if (overlay_debugging /* unmapped overlay section */ | |
0d381245 VP |
2823 | && section_is_overlay (bl->section) |
2824 | && !section_is_mapped (bl->section)) | |
c02f5703 MS |
2825 | continue; |
2826 | } | |
c5aa993b | 2827 | |
c5aa993b JM |
2828 | /* Is this a catchpoint of a load or unload? If so, did we |
2829 | get a load or unload of the specified library? If not, | |
2830 | ignore it. */ | |
2831 | if ((b->type == bp_catch_load) | |
c906108c | 2832 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2833 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2834 | || ((b->dll_pathname != NULL) |
53a5351d | 2835 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2836 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2837 | PIDGET (inferior_ptid))) | |
53a5351d | 2838 | != 0))) |
c906108c | 2839 | #endif |
c5aa993b JM |
2840 | ) |
2841 | continue; | |
2842 | ||
2843 | if ((b->type == bp_catch_unload) | |
c906108c | 2844 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2845 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2846 | || ((b->dll_pathname != NULL) |
53a5351d | 2847 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2848 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2849 | PIDGET (inferior_ptid))) | |
53a5351d | 2850 | != 0))) |
c906108c | 2851 | #endif |
c5aa993b JM |
2852 | ) |
2853 | continue; | |
c906108c | 2854 | |
c5aa993b | 2855 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2856 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2857 | &b->forked_inferior_pid)) | |
c5aa993b | 2858 | continue; |
c906108c | 2859 | |
c5aa993b | 2860 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2861 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2862 | &b->forked_inferior_pid)) | |
c5aa993b | 2863 | continue; |
c906108c | 2864 | |
c5aa993b | 2865 | if ((b->type == bp_catch_exec) |
47932f85 | 2866 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2867 | continue; |
c906108c | 2868 | |
a5606eee VP |
2869 | /* For hardware watchpoints, we look only at the first location. |
2870 | The watchpoint_check function will work on entire expression, | |
2871 | not the individual locations. For read watchopints, the | |
2872 | watchpoints_triggered function have checked all locations | |
2873 | alrea | |
2874 | */ | |
2875 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
2876 | continue; | |
2877 | ||
c5aa993b JM |
2878 | /* Come here if it's a watchpoint, or if the break address matches */ |
2879 | ||
0d381245 | 2880 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b JM |
2881 | |
2882 | /* Watchpoints may change this, if not found to have triggered. */ | |
2883 | bs->stop = 1; | |
2884 | bs->print = 1; | |
2885 | ||
d983da9c DJ |
2886 | if (b->type == bp_watchpoint |
2887 | || b->type == bp_read_watchpoint | |
2888 | || b->type == bp_access_watchpoint | |
2889 | || b->type == bp_hardware_watchpoint) | |
c5aa993b JM |
2890 | { |
2891 | CORE_ADDR addr; | |
278cd55f | 2892 | struct value *v; |
d983da9c DJ |
2893 | int must_check_value = 0; |
2894 | ||
2895 | if (b->type == bp_watchpoint) | |
2896 | /* For a software watchpoint, we must always check the | |
2897 | watched value. */ | |
2898 | must_check_value = 1; | |
2899 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2900 | /* We have a hardware watchpoint (read, write, or access) | |
2901 | and the target earlier reported an address watched by | |
2902 | this watchpoint. */ | |
2903 | must_check_value = 1; | |
2904 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2905 | && b->type == bp_hardware_watchpoint) | |
2906 | /* We were stopped by a hardware watchpoint, but the target could | |
2907 | not report the data address. We must check the watchpoint's | |
2908 | value. Access and read watchpoints are out of luck; without | |
2909 | a data address, we can't figure it out. */ | |
2910 | must_check_value = 1; | |
2911 | ||
2912 | if (must_check_value) | |
9ebf4acf AC |
2913 | { |
2914 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2915 | b->number); | |
2916 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2917 | int e = catch_errors (watchpoint_check, bs, message, | |
2918 | RETURN_MASK_ALL); | |
2919 | do_cleanups (cleanups); | |
2920 | switch (e) | |
2921 | { | |
2922 | case WP_DELETED: | |
2923 | /* We've already printed what needs to be printed. */ | |
2924 | bs->print_it = print_it_done; | |
2925 | /* Stop. */ | |
2926 | break; | |
2927 | case WP_VALUE_CHANGED: | |
2928 | if (b->type == bp_read_watchpoint) | |
2929 | { | |
2930 | /* Don't stop: read watchpoints shouldn't fire if | |
2931 | the value has changed. This is for targets | |
2932 | which cannot set read-only watchpoints. */ | |
2933 | bs->print_it = print_it_noop; | |
2934 | bs->stop = 0; | |
2935 | continue; | |
2936 | } | |
2937 | ++(b->hit_count); | |
2938 | break; | |
2939 | case WP_VALUE_NOT_CHANGED: | |
d983da9c DJ |
2940 | if (b->type == bp_hardware_watchpoint |
2941 | || b->type == bp_watchpoint) | |
2942 | { | |
2943 | /* Don't stop: write watchpoints shouldn't fire if | |
2944 | the value hasn't changed. */ | |
2945 | bs->print_it = print_it_noop; | |
2946 | bs->stop = 0; | |
2947 | continue; | |
2948 | } | |
9ebf4acf AC |
2949 | /* Stop. */ |
2950 | ++(b->hit_count); | |
2951 | break; | |
2952 | default: | |
2953 | /* Can't happen. */ | |
2954 | case 0: | |
2955 | /* Error from catch_errors. */ | |
a3f17187 | 2956 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); |
9ebf4acf AC |
2957 | if (b->related_breakpoint) |
2958 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2959 | b->disposition = disp_del_at_next_stop; | |
2960 | /* We've already printed what needs to be printed. */ | |
2961 | bs->print_it = print_it_done; | |
2962 | break; | |
2963 | } | |
2964 | } | |
d983da9c | 2965 | else /* must_check_value == 0 */ |
53a5351d | 2966 | { |
d983da9c DJ |
2967 | /* This is a case where some watchpoint(s) triggered, but |
2968 | not at the address of this watchpoint, or else no | |
2969 | watchpoint triggered after all. So don't print | |
2970 | anything for this watchpoint. */ | |
53a5351d JM |
2971 | bs->print_it = print_it_noop; |
2972 | bs->stop = 0; | |
2973 | continue; | |
2974 | } | |
c5aa993b JM |
2975 | } |
2976 | else | |
2977 | { | |
2978 | /* By definition, an encountered breakpoint is a triggered | |
2979 | breakpoint. */ | |
2980 | ++(b->hit_count); | |
c5aa993b JM |
2981 | } |
2982 | ||
818dd999 AC |
2983 | if (frame_id_p (b->frame_id) |
2984 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2985 | bs->stop = 0; |
2986 | else | |
2987 | { | |
2988 | int value_is_zero = 0; | |
2989 | ||
d983da9c DJ |
2990 | /* If this is a scope breakpoint, mark the associated |
2991 | watchpoint as triggered so that we will handle the | |
2992 | out-of-scope event. We'll get to the watchpoint next | |
2993 | iteration. */ | |
2994 | if (b->type == bp_watchpoint_scope) | |
2995 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
2996 | ||
28e78778 | 2997 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) |
c5aa993b JM |
2998 | { |
2999 | /* Need to select the frame, with all that implies | |
3000 | so that the conditions will have the right context. */ | |
0f7d239c | 3001 | select_frame (get_current_frame ()); |
c5aa993b | 3002 | value_is_zero |
0d381245 | 3003 | = catch_errors (breakpoint_cond_eval, (bl->cond), |
c5aa993b JM |
3004 | "Error in testing breakpoint condition:\n", |
3005 | RETURN_MASK_ALL); | |
3006 | /* FIXME-someday, should give breakpoint # */ | |
3007 | free_all_values (); | |
3008 | } | |
0d381245 | 3009 | if (bl->cond && value_is_zero) |
c5aa993b JM |
3010 | { |
3011 | bs->stop = 0; | |
3012 | /* Don't consider this a hit. */ | |
3013 | --(b->hit_count); | |
3014 | } | |
fa5281d0 DJ |
3015 | else if (b->thread != -1 && b->thread != thread_id) |
3016 | { | |
3017 | bs->stop = 0; | |
3018 | /* Don't consider this a hit. */ | |
3019 | --(b->hit_count); | |
3020 | } | |
c5aa993b JM |
3021 | else if (b->ignore_count > 0) |
3022 | { | |
3023 | b->ignore_count--; | |
5c44784c | 3024 | annotate_ignore_count_change (); |
c5aa993b JM |
3025 | bs->stop = 0; |
3026 | } | |
d983da9c DJ |
3027 | else if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3028 | /* We do not stop for these. */ | |
3029 | bs->stop = 0; | |
c5aa993b JM |
3030 | else |
3031 | { | |
3032 | /* We will stop here */ | |
b5de0fa7 | 3033 | if (b->disposition == disp_disable) |
74960c60 VP |
3034 | { |
3035 | b->enable_state = bp_disabled; | |
3036 | update_global_location_list (); | |
3037 | } | |
c5aa993b JM |
3038 | if (b->silent) |
3039 | bs->print = 0; | |
552f4abf | 3040 | bs->commands = b->commands; |
c5aa993b | 3041 | if (bs->commands && |
6314a349 AC |
3042 | (strcmp ("silent", bs->commands->line) == 0 |
3043 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
3044 | { |
3045 | bs->commands = bs->commands->next; | |
c906108c | 3046 | bs->print = 0; |
c5aa993b | 3047 | } |
552f4abf | 3048 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
3049 | } |
3050 | } | |
3051 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
3052 | if (bs->stop == 0 || bs->print == 0) | |
3053 | bs->print_it = print_it_noop; | |
3054 | } | |
c906108c SS |
3055 | |
3056 | bs->next = NULL; /* Terminate the chain */ | |
3057 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3058 | ||
d983da9c DJ |
3059 | /* If we aren't stopping, the value of some hardware watchpoint may |
3060 | not have changed, but the intermediate memory locations we are | |
3061 | watching may have. Don't bother if we're stopping; this will get | |
3062 | done later. */ | |
3063 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3064 | if (bs->stop) | |
3065 | break; | |
3066 | ||
3067 | if (bs == NULL) | |
3068 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3069 | if (!bs->stop | |
3070 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint | |
3071 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3072 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3073 | { | |
a5606eee VP |
3074 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3075 | location is no longer used by the watchpoint. Prevent | |
3076 | further code from trying to use it. */ | |
3077 | bs->breakpoint_at = NULL; | |
d983da9c DJ |
3078 | remove_breakpoints (); |
3079 | insert_breakpoints (); | |
3080 | break; | |
3081 | } | |
3082 | ||
3083 | return root_bs->next; | |
c906108c SS |
3084 | } |
3085 | \f | |
3086 | /* Tell what to do about this bpstat. */ | |
3087 | struct bpstat_what | |
fba45db2 | 3088 | bpstat_what (bpstat bs) |
c906108c SS |
3089 | { |
3090 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3091 | enum class |
3092 | { | |
3093 | /* This bpstat element has no effect on the main_action. */ | |
3094 | no_effect = 0, | |
3095 | ||
3096 | /* There was a watchpoint, stop but don't print. */ | |
3097 | wp_silent, | |
c906108c | 3098 | |
c5aa993b JM |
3099 | /* There was a watchpoint, stop and print. */ |
3100 | wp_noisy, | |
c906108c | 3101 | |
c5aa993b JM |
3102 | /* There was a breakpoint but we're not stopping. */ |
3103 | bp_nostop, | |
c906108c | 3104 | |
c5aa993b JM |
3105 | /* There was a breakpoint, stop but don't print. */ |
3106 | bp_silent, | |
c906108c | 3107 | |
c5aa993b JM |
3108 | /* There was a breakpoint, stop and print. */ |
3109 | bp_noisy, | |
c906108c | 3110 | |
c5aa993b JM |
3111 | /* We hit the longjmp breakpoint. */ |
3112 | long_jump, | |
c906108c | 3113 | |
c5aa993b JM |
3114 | /* We hit the longjmp_resume breakpoint. */ |
3115 | long_resume, | |
c906108c | 3116 | |
c5aa993b JM |
3117 | /* We hit the step_resume breakpoint. */ |
3118 | step_resume, | |
c906108c | 3119 | |
c5aa993b JM |
3120 | /* We hit the shared library event breakpoint. */ |
3121 | shlib_event, | |
c906108c | 3122 | |
c5aa993b JM |
3123 | /* We caught a shared library event. */ |
3124 | catch_shlib_event, | |
c906108c | 3125 | |
c5aa993b JM |
3126 | /* This is just used to count how many enums there are. */ |
3127 | class_last | |
c906108c SS |
3128 | }; |
3129 | ||
3130 | /* Here is the table which drives this routine. So that we can | |
3131 | format it pretty, we define some abbreviations for the | |
3132 | enum bpstat_what codes. */ | |
3133 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3134 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3135 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3136 | #define sgl BPSTAT_WHAT_SINGLE | |
3137 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3138 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
3139 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
3140 | #define sr BPSTAT_WHAT_STEP_RESUME | |
c906108c SS |
3141 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
3142 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3143 | ||
3144 | /* "Can't happen." Might want to print an error message. | |
3145 | abort() is not out of the question, but chances are GDB is just | |
3146 | a bit confused, not unusable. */ | |
3147 | #define err BPSTAT_WHAT_STOP_NOISY | |
3148 | ||
3149 | /* Given an old action and a class, come up with a new action. */ | |
3150 | /* One interesting property of this table is that wp_silent is the same | |
3151 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3152 | after stopping, the check for whether to step over a breakpoint | |
3153 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3154 | reference to how we stopped. We retain separate wp_silent and |
3155 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3156 | |
3157 | Another possibly interesting property of this table is that | |
3158 | there's a partial ordering, priority-like, of the actions. Once | |
3159 | you've decided that some action is appropriate, you'll never go | |
3160 | back and decide something of a lower priority is better. The | |
3161 | ordering is: | |
3162 | ||
4d5b2cd7 DJ |
3163 | kc < clr sgl shl shlr slr sn sr ss |
3164 | sgl < clrs shl shlr slr sn sr ss | |
3165 | slr < err shl shlr sn sr ss | |
3166 | clr < clrs err shl shlr sn sr ss | |
3167 | clrs < err shl shlr sn sr ss | |
3168 | ss < shl shlr sn sr | |
3169 | sn < shl shlr sr | |
46d57086 DJ |
3170 | shl < shlr sr |
3171 | shlr < sr | |
4d5b2cd7 | 3172 | sr < |
c5aa993b | 3173 | |
43ff13b4 JM |
3174 | What I think this means is that we don't need a damned table |
3175 | here. If you just put the rows and columns in the right order, | |
3176 | it'd look awfully regular. We could simply walk the bpstat list | |
3177 | and choose the highest priority action we find, with a little | |
3178 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
3179 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
3180 | is messy anyway). */ | |
c906108c SS |
3181 | |
3182 | /* step_resume entries: a step resume breakpoint overrides another | |
3183 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3184 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3185 | |
3186 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3187 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3188 | { | |
3189 | /* old action */ | |
4d5b2cd7 | 3190 | /* kc ss sn sgl slr clr clrs sr shl shlr |
c5aa993b JM |
3191 | */ |
3192 | /*no_effect */ | |
4d5b2cd7 | 3193 | {kc, ss, sn, sgl, slr, clr, clrs, sr, shl, shlr}, |
c5aa993b | 3194 | /*wp_silent */ |
4d5b2cd7 | 3195 | {ss, ss, sn, ss, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3196 | /*wp_noisy */ |
4d5b2cd7 | 3197 | {sn, sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3198 | /*bp_nostop */ |
4d5b2cd7 | 3199 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, shl, shlr}, |
c5aa993b | 3200 | /*bp_silent */ |
4d5b2cd7 | 3201 | {ss, ss, sn, ss, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3202 | /*bp_noisy */ |
4d5b2cd7 | 3203 | {sn, sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3204 | /*long_jump */ |
4d5b2cd7 | 3205 | {slr, ss, sn, slr, slr, err, err, sr, shl, shlr}, |
c5aa993b | 3206 | /*long_resume */ |
4d5b2cd7 | 3207 | {clr, ss, sn, clrs, err, err, err, sr, shl, shlr}, |
c5aa993b | 3208 | /*step_resume */ |
4d5b2cd7 | 3209 | {sr, sr, sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3210 | /*shlib */ |
4d5b2cd7 | 3211 | {shl, shl, shl, shl, shl, shl, shl, sr, shl, shlr}, |
c5aa993b | 3212 | /*catch_shlib */ |
4d5b2cd7 | 3213 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, sr, shlr, shlr} |
c5aa993b | 3214 | }; |
c906108c SS |
3215 | |
3216 | #undef kc | |
3217 | #undef ss | |
3218 | #undef sn | |
3219 | #undef sgl | |
3220 | #undef slr | |
3221 | #undef clr | |
3222 | #undef clrs | |
3223 | #undef err | |
3224 | #undef sr | |
3225 | #undef ts | |
3226 | #undef shl | |
3227 | #undef shlr | |
3228 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3229 | struct bpstat_what retval; | |
3230 | ||
3231 | retval.call_dummy = 0; | |
3232 | for (; bs != NULL; bs = bs->next) | |
3233 | { | |
3234 | enum class bs_class = no_effect; | |
3235 | if (bs->breakpoint_at == NULL) | |
3236 | /* I suspect this can happen if it was a momentary breakpoint | |
3237 | which has since been deleted. */ | |
3238 | continue; | |
4f8d1dc6 | 3239 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3240 | { |
3241 | case bp_none: | |
3242 | continue; | |
3243 | ||
3244 | case bp_breakpoint: | |
3245 | case bp_hardware_breakpoint: | |
3246 | case bp_until: | |
3247 | case bp_finish: | |
3248 | if (bs->stop) | |
3249 | { | |
3250 | if (bs->print) | |
3251 | bs_class = bp_noisy; | |
3252 | else | |
3253 | bs_class = bp_silent; | |
3254 | } | |
3255 | else | |
3256 | bs_class = bp_nostop; | |
3257 | break; | |
3258 | case bp_watchpoint: | |
3259 | case bp_hardware_watchpoint: | |
3260 | case bp_read_watchpoint: | |
3261 | case bp_access_watchpoint: | |
3262 | if (bs->stop) | |
3263 | { | |
3264 | if (bs->print) | |
3265 | bs_class = wp_noisy; | |
3266 | else | |
3267 | bs_class = wp_silent; | |
3268 | } | |
3269 | else | |
53a5351d JM |
3270 | /* There was a watchpoint, but we're not stopping. |
3271 | This requires no further action. */ | |
c906108c SS |
3272 | bs_class = no_effect; |
3273 | break; | |
3274 | case bp_longjmp: | |
3275 | bs_class = long_jump; | |
3276 | break; | |
3277 | case bp_longjmp_resume: | |
3278 | bs_class = long_resume; | |
3279 | break; | |
3280 | case bp_step_resume: | |
3281 | if (bs->stop) | |
3282 | { | |
3283 | bs_class = step_resume; | |
3284 | } | |
3285 | else | |
3286 | /* It is for the wrong frame. */ | |
3287 | bs_class = bp_nostop; | |
3288 | break; | |
c906108c SS |
3289 | case bp_watchpoint_scope: |
3290 | bs_class = bp_nostop; | |
3291 | break; | |
c5aa993b JM |
3292 | case bp_shlib_event: |
3293 | bs_class = shlib_event; | |
3294 | break; | |
c4093a6a | 3295 | case bp_thread_event: |
1900040c | 3296 | case bp_overlay_event: |
c4093a6a JM |
3297 | bs_class = bp_nostop; |
3298 | break; | |
c5aa993b JM |
3299 | case bp_catch_load: |
3300 | case bp_catch_unload: | |
3301 | /* Only if this catchpoint triggered should we cause the | |
3302 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3303 | catchpoint. */ | |
3304 | if (bs->stop) | |
3305 | bs_class = catch_shlib_event; | |
3306 | else | |
3307 | bs_class = no_effect; | |
3308 | break; | |
3309 | case bp_catch_fork: | |
3310 | case bp_catch_vfork: | |
3311 | case bp_catch_exec: | |
3312 | if (bs->stop) | |
3313 | { | |
3314 | if (bs->print) | |
3315 | bs_class = bp_noisy; | |
3316 | else | |
3317 | bs_class = bp_silent; | |
3318 | } | |
3319 | else | |
53a5351d JM |
3320 | /* There was a catchpoint, but we're not stopping. |
3321 | This requires no further action. */ | |
c5aa993b JM |
3322 | bs_class = no_effect; |
3323 | break; | |
c906108c | 3324 | case bp_call_dummy: |
53a5351d JM |
3325 | /* Make sure the action is stop (silent or noisy), |
3326 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3327 | bs_class = bp_silent; |
3328 | retval.call_dummy = 1; | |
3329 | break; | |
3330 | } | |
c5aa993b | 3331 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3332 | } |
3333 | retval.main_action = current_action; | |
3334 | return retval; | |
3335 | } | |
3336 | ||
3337 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3338 | without hardware support). This isn't related to a specific bpstat, | |
3339 | just to things like whether watchpoints are set. */ | |
3340 | ||
c5aa993b | 3341 | int |
fba45db2 | 3342 | bpstat_should_step (void) |
c906108c SS |
3343 | { |
3344 | struct breakpoint *b; | |
3345 | ALL_BREAKPOINTS (b) | |
468d015d | 3346 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3347 | return 1; |
c906108c SS |
3348 | return 0; |
3349 | } | |
3350 | ||
c906108c | 3351 | \f |
c5aa993b | 3352 | |
c906108c SS |
3353 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3354 | function returns another bpstat which contains only the catchpoints | |
3355 | on that first list, if any. */ | |
3356 | void | |
fba45db2 | 3357 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3358 | { |
3359 | struct bpstats root_bs[1]; | |
3360 | bpstat bs = root_bs; | |
3361 | struct breakpoint *ep; | |
3362 | char *dll_pathname; | |
3363 | ||
c906108c SS |
3364 | bpstat_clear (cp_list); |
3365 | root_bs->next = NULL; | |
c5aa993b JM |
3366 | |
3367 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3368 | { |
3369 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
4f8d1dc6 | 3370 | ep = ep_list->breakpoint_at->owner; |
c906108c | 3371 | if (ep == NULL) |
c5aa993b JM |
3372 | break; |
3373 | if ((ep->type != bp_catch_load) && | |
dfdfb3ca | 3374 | (ep->type != bp_catch_unload)) |
53a5351d | 3375 | /* pai: (temp) ADD fork/vfork here!! */ |
c5aa993b JM |
3376 | continue; |
3377 | ||
c906108c | 3378 | /* Yes; add it to the list. */ |
4f8d1dc6 | 3379 | bs = bpstat_alloc (ep_list->breakpoint_at, bs); |
c906108c SS |
3380 | *bs = *ep_list; |
3381 | bs->next = NULL; | |
3382 | bs = root_bs->next; | |
c5aa993b | 3383 | |
c906108c SS |
3384 | #if defined(SOLIB_ADD) |
3385 | /* Also, for each triggered catchpoint, tag it with the name of | |
3386 | the library that caused this trigger. (We copy the name now, | |
3387 | because it's only guaranteed to be available NOW, when the | |
3388 | catchpoint triggers. Clients who may wish to know the name | |
3389 | later must get it from the catchpoint itself.) */ | |
3390 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3391 | xfree (ep->triggered_dll_pathname); |
c906108c | 3392 | if (ep->type == bp_catch_load) |
39f77062 KB |
3393 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3394 | PIDGET (inferior_ptid)); | |
c906108c | 3395 | else |
39f77062 KB |
3396 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3397 | PIDGET (inferior_ptid)); | |
c906108c SS |
3398 | #else |
3399 | dll_pathname = NULL; | |
3400 | #endif | |
3401 | if (dll_pathname) | |
3402 | { | |
53a5351d JM |
3403 | ep->triggered_dll_pathname = (char *) |
3404 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3405 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3406 | } | |
3407 | else | |
3408 | ep->triggered_dll_pathname = NULL; | |
3409 | } | |
c5aa993b | 3410 | |
c906108c SS |
3411 | *cp_list = bs; |
3412 | } | |
3413 | ||
0d381245 VP |
3414 | static void print_breakpoint_location (struct breakpoint *b, |
3415 | struct bp_location *loc, | |
3416 | char *wrap_indent, | |
3417 | struct ui_stream *stb) | |
3418 | { | |
3419 | if (b->source_file) | |
3420 | { | |
3421 | struct symbol *sym | |
3422 | = find_pc_sect_function (loc->address, loc->section); | |
3423 | if (sym) | |
3424 | { | |
3425 | ui_out_text (uiout, "in "); | |
3426 | ui_out_field_string (uiout, "func", | |
3427 | SYMBOL_PRINT_NAME (sym)); | |
3428 | ui_out_wrap_hint (uiout, wrap_indent); | |
3429 | ui_out_text (uiout, " at "); | |
3430 | } | |
3431 | ui_out_field_string (uiout, "file", b->source_file); | |
3432 | ui_out_text (uiout, ":"); | |
3433 | ||
3434 | if (ui_out_is_mi_like_p (uiout)) | |
3435 | { | |
3436 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3437 | char *fullname = symtab_to_fullname (sal.symtab); | |
3438 | ||
3439 | if (fullname) | |
3440 | ui_out_field_string (uiout, "fullname", fullname); | |
3441 | } | |
3442 | ||
3443 | ui_out_field_int (uiout, "line", b->line_number); | |
3444 | } | |
3445 | else if (!b->loc) | |
3446 | { | |
3447 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3448 | } | |
3449 | else | |
3450 | { | |
3451 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3452 | ui_out_field_stream (uiout, "at", stb); | |
3453 | } | |
3454 | } | |
3455 | ||
c4093a6a | 3456 | /* Print B to gdb_stdout. */ |
c906108c | 3457 | static void |
0d381245 VP |
3458 | print_one_breakpoint_location (struct breakpoint *b, |
3459 | struct bp_location *loc, | |
3460 | int loc_number, | |
3461 | CORE_ADDR *last_addr) | |
c906108c | 3462 | { |
52f0bd74 AC |
3463 | struct command_line *l; |
3464 | struct symbol *sym; | |
c4093a6a JM |
3465 | struct ep_type_description |
3466 | { | |
3467 | enum bptype type; | |
3468 | char *description; | |
3469 | }; | |
3470 | static struct ep_type_description bptypes[] = | |
c906108c | 3471 | { |
c5aa993b JM |
3472 | {bp_none, "?deleted?"}, |
3473 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3474 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3475 | {bp_until, "until"}, |
3476 | {bp_finish, "finish"}, | |
3477 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3478 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3479 | {bp_read_watchpoint, "read watchpoint"}, |
3480 | {bp_access_watchpoint, "acc watchpoint"}, | |
3481 | {bp_longjmp, "longjmp"}, | |
3482 | {bp_longjmp_resume, "longjmp resume"}, | |
3483 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3484 | {bp_watchpoint_scope, "watchpoint scope"}, |
3485 | {bp_call_dummy, "call dummy"}, | |
3486 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3487 | {bp_thread_event, "thread events"}, |
1900040c | 3488 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3489 | {bp_catch_load, "catch load"}, |
3490 | {bp_catch_unload, "catch unload"}, | |
3491 | {bp_catch_fork, "catch fork"}, | |
3492 | {bp_catch_vfork, "catch vfork"}, | |
dfdfb3ca | 3493 | {bp_catch_exec, "catch exec"} |
c5aa993b | 3494 | }; |
c4093a6a | 3495 | |
c2c6d25f | 3496 | static char bpenables[] = "nynny"; |
c906108c | 3497 | char wrap_indent[80]; |
8b93c638 JM |
3498 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3499 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3500 | struct cleanup *bkpt_chain; |
c906108c | 3501 | |
0d381245 VP |
3502 | int header_of_multiple = 0; |
3503 | int part_of_multiple = (loc != NULL); | |
3504 | ||
3505 | gdb_assert (!loc || loc_number != 0); | |
3506 | /* See comment in print_one_breakpoint concerning | |
3507 | treatment of breakpoints with single disabled | |
3508 | location. */ | |
3509 | if (loc == NULL | |
3510 | && (b->loc != NULL | |
3511 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3512 | header_of_multiple = 1; | |
3513 | if (loc == NULL) | |
3514 | loc = b->loc; | |
3515 | ||
c4093a6a | 3516 | annotate_record (); |
3b31d625 | 3517 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3518 | |
3519 | /* 1 */ | |
3520 | annotate_field (0); | |
0d381245 VP |
3521 | if (part_of_multiple) |
3522 | { | |
3523 | char *formatted; | |
0c6773c1 | 3524 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3525 | ui_out_field_string (uiout, "number", formatted); |
3526 | xfree (formatted); | |
3527 | } | |
3528 | else | |
3529 | { | |
3530 | ui_out_field_int (uiout, "number", b->number); | |
3531 | } | |
c4093a6a JM |
3532 | |
3533 | /* 2 */ | |
3534 | annotate_field (1); | |
0d381245 VP |
3535 | if (part_of_multiple) |
3536 | ui_out_field_skip (uiout, "type"); | |
3537 | else | |
3538 | { | |
3539 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3540 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3541 | internal_error (__FILE__, __LINE__, | |
3542 | _("bptypes table does not describe type #%d."), | |
3543 | (int) b->type); | |
3544 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3545 | } | |
c4093a6a JM |
3546 | |
3547 | /* 3 */ | |
3548 | annotate_field (2); | |
0d381245 VP |
3549 | if (part_of_multiple) |
3550 | ui_out_field_skip (uiout, "disp"); | |
3551 | else | |
2cec12e5 | 3552 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3553 | |
c4093a6a JM |
3554 | |
3555 | /* 4 */ | |
3556 | annotate_field (3); | |
0d381245 | 3557 | if (part_of_multiple) |
54e52265 | 3558 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3559 | else |
54e52265 VP |
3560 | ui_out_field_fmt (uiout, "enabled", "%c", |
3561 | bpenables[(int) b->enable_state]); | |
3562 | ui_out_spaces (uiout, 2); | |
0d381245 | 3563 | |
c4093a6a JM |
3564 | |
3565 | /* 5 and 6 */ | |
3566 | strcpy (wrap_indent, " "); | |
3567 | if (addressprint) | |
75ac9d7b | 3568 | { |
17a912b6 | 3569 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3570 | strcat (wrap_indent, " "); |
3571 | else | |
3572 | strcat (wrap_indent, " "); | |
3573 | } | |
c906108c | 3574 | |
3086aeae | 3575 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3576 | { |
3577 | /* Although the print_one can possibly print | |
3578 | all locations, calling it here is not likely | |
3579 | to get any nice result. So, make sure there's | |
3580 | just one location. */ | |
3581 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3582 | b->ops->print_one (b, last_addr); | |
3583 | } | |
3086aeae DJ |
3584 | else |
3585 | switch (b->type) | |
3586 | { | |
3587 | case bp_none: | |
3588 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3589 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3590 | break; |
c906108c | 3591 | |
3086aeae DJ |
3592 | case bp_watchpoint: |
3593 | case bp_hardware_watchpoint: | |
3594 | case bp_read_watchpoint: | |
3595 | case bp_access_watchpoint: | |
3596 | /* Field 4, the address, is omitted (which makes the columns | |
3597 | not line up too nicely with the headers, but the effect | |
3598 | is relatively readable). */ | |
3599 | if (addressprint) | |
3600 | ui_out_field_skip (uiout, "addr"); | |
3601 | annotate_field (5); | |
3602 | print_expression (b->exp, stb->stream); | |
3603 | ui_out_field_stream (uiout, "what", stb); | |
3604 | break; | |
3605 | ||
3606 | case bp_catch_load: | |
3607 | case bp_catch_unload: | |
3608 | /* Field 4, the address, is omitted (which makes the columns | |
3609 | not line up too nicely with the headers, but the effect | |
3610 | is relatively readable). */ | |
3611 | if (addressprint) | |
3612 | ui_out_field_skip (uiout, "addr"); | |
3613 | annotate_field (5); | |
3614 | if (b->dll_pathname == NULL) | |
3615 | { | |
3616 | ui_out_field_string (uiout, "what", "<any library>"); | |
3617 | ui_out_spaces (uiout, 1); | |
3618 | } | |
3619 | else | |
3620 | { | |
3621 | ui_out_text (uiout, "library \""); | |
3622 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3623 | ui_out_text (uiout, "\" "); | |
3624 | } | |
3625 | break; | |
3626 | ||
3627 | case bp_catch_fork: | |
3628 | case bp_catch_vfork: | |
3629 | /* Field 4, the address, is omitted (which makes the columns | |
3630 | not line up too nicely with the headers, but the effect | |
3631 | is relatively readable). */ | |
3632 | if (addressprint) | |
3633 | ui_out_field_skip (uiout, "addr"); | |
3634 | annotate_field (5); | |
3635 | if (b->forked_inferior_pid != 0) | |
3636 | { | |
3637 | ui_out_text (uiout, "process "); | |
3638 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3639 | ui_out_spaces (uiout, 1); | |
3640 | } | |
0f699bbe | 3641 | break; |
3086aeae DJ |
3642 | |
3643 | case bp_catch_exec: | |
3644 | /* Field 4, the address, is omitted (which makes the columns | |
3645 | not line up too nicely with the headers, but the effect | |
3646 | is relatively readable). */ | |
3647 | if (addressprint) | |
3648 | ui_out_field_skip (uiout, "addr"); | |
3649 | annotate_field (5); | |
3650 | if (b->exec_pathname != NULL) | |
3651 | { | |
3652 | ui_out_text (uiout, "program \""); | |
3653 | ui_out_field_string (uiout, "what", b->exec_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: | |
3670 | if (addressprint) | |
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 | ||
0d381245 | 3727 | if (!part_of_multiple && show_breakpoint_hit_counts && 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)) |
0d381245 | 3745 | if (!part_of_multiple && show_breakpoint_hit_counts && 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 | |
3854 | || b->type == bp_catch_load | |
3855 | || b->type == bp_catch_unload | |
3856 | || b->type == bp_catch_fork | |
3857 | || b->type == bp_catch_vfork | |
3858 | || b->type == bp_catch_exec | |
7f3b0473 AC |
3859 | || b->type == bp_hardware_breakpoint |
3860 | || b->type == bp_watchpoint | |
3861 | || b->type == bp_read_watchpoint | |
3862 | || b->type == bp_access_watchpoint | |
3863 | || b->type == bp_hardware_watchpoint); | |
3864 | } | |
3865 | ||
3866 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3867 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3868 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3869 | |
c4093a6a | 3870 | static void |
fba45db2 | 3871 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3872 | { |
52f0bd74 | 3873 | struct breakpoint *b; |
c4093a6a | 3874 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3875 | int nr_printable_breakpoints; |
3b31d625 | 3876 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3877 | |
7f3b0473 AC |
3878 | /* Compute the number of rows in the table. */ |
3879 | nr_printable_breakpoints = 0; | |
3880 | ALL_BREAKPOINTS (b) | |
3881 | if (bnum == -1 | |
3882 | || bnum == b->number) | |
3883 | { | |
3884 | if (allflag || user_settable_breakpoint (b)) | |
3885 | nr_printable_breakpoints++; | |
3886 | } | |
3887 | ||
8b93c638 | 3888 | if (addressprint) |
3b31d625 EZ |
3889 | bkpttbl_chain |
3890 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3891 | "BreakpointTable"); | |
8b93c638 | 3892 | else |
3b31d625 EZ |
3893 | bkpttbl_chain |
3894 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3895 | "BreakpointTable"); | |
8b93c638 | 3896 | |
7f3b0473 | 3897 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3898 | annotate_breakpoints_headers (); |
3899 | if (nr_printable_breakpoints > 0) | |
3900 | annotate_field (0); | |
0d381245 | 3901 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3902 | if (nr_printable_breakpoints > 0) |
3903 | annotate_field (1); | |
3904 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3905 | if (nr_printable_breakpoints > 0) | |
3906 | annotate_field (2); | |
3907 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3908 | if (nr_printable_breakpoints > 0) | |
3909 | annotate_field (3); | |
54e52265 | 3910 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
d7faa9e7 | 3911 | if (addressprint) |
7f3b0473 | 3912 | { |
d7faa9e7 AC |
3913 | if (nr_printable_breakpoints > 0) |
3914 | annotate_field (4); | |
17a912b6 | 3915 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3916 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3917 | else |
b25959ec | 3918 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3919 | } |
d7faa9e7 AC |
3920 | if (nr_printable_breakpoints > 0) |
3921 | annotate_field (5); | |
3922 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3923 | ui_out_table_body (uiout); | |
3924 | if (nr_printable_breakpoints > 0) | |
3925 | annotate_breakpoints_table (); | |
7f3b0473 | 3926 | |
c4093a6a JM |
3927 | ALL_BREAKPOINTS (b) |
3928 | if (bnum == -1 | |
3929 | || bnum == b->number) | |
3930 | { | |
3931 | /* We only print out user settable breakpoints unless the | |
3932 | allflag is set. */ | |
7f3b0473 AC |
3933 | if (allflag || user_settable_breakpoint (b)) |
3934 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3935 | } |
3936 | ||
3b31d625 | 3937 | do_cleanups (bkpttbl_chain); |
698384cd | 3938 | |
7f3b0473 | 3939 | if (nr_printable_breakpoints == 0) |
c906108c | 3940 | { |
8b93c638 JM |
3941 | if (bnum == -1) |
3942 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3943 | else | |
3944 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3945 | bnum); | |
c906108c SS |
3946 | } |
3947 | else | |
c4093a6a JM |
3948 | { |
3949 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3950 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3951 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
c4093a6a JM |
3952 | set_next_address (last_addr); |
3953 | } | |
c906108c | 3954 | |
c4093a6a JM |
3955 | /* FIXME? Should this be moved up so that it is only called when |
3956 | there have been breakpoints? */ | |
c906108c SS |
3957 | annotate_breakpoints_table_end (); |
3958 | } | |
3959 | ||
c906108c | 3960 | static void |
fba45db2 | 3961 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3962 | { |
3963 | int bnum = -1; | |
3964 | ||
3965 | if (bnum_exp) | |
bb518678 | 3966 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3967 | |
3968 | breakpoint_1 (bnum, 0); | |
3969 | } | |
3970 | ||
7a292a7a | 3971 | static void |
fba45db2 | 3972 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3973 | { |
3974 | int bnum = -1; | |
3975 | ||
3976 | if (bnum_exp) | |
bb518678 | 3977 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3978 | |
3979 | breakpoint_1 (bnum, 1); | |
3980 | } | |
3981 | ||
0d381245 VP |
3982 | static int |
3983 | breakpoint_has_pc (struct breakpoint *b, CORE_ADDR pc, asection *section) | |
3984 | { | |
3985 | struct bp_location *bl = b->loc; | |
3986 | for (; bl; bl = bl->next) | |
3987 | { | |
3988 | if (bl->address == pc | |
3989 | && (!overlay_debugging || bl->section == section)) | |
3990 | return 1; | |
3991 | } | |
3992 | return 0; | |
3993 | } | |
3994 | ||
c906108c SS |
3995 | /* Print a message describing any breakpoints set at PC. */ |
3996 | ||
3997 | static void | |
d674a25c | 3998 | describe_other_breakpoints (CORE_ADDR pc, asection *section, int thread) |
c906108c | 3999 | { |
52f0bd74 AC |
4000 | int others = 0; |
4001 | struct breakpoint *b; | |
c906108c SS |
4002 | |
4003 | ALL_BREAKPOINTS (b) | |
0d381245 | 4004 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4005 | if (others > 0) |
4006 | { | |
a3f17187 AC |
4007 | if (others == 1) |
4008 | printf_filtered (_("Note: breakpoint ")); | |
4009 | else /* if (others == ???) */ | |
4010 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4011 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4012 | if (breakpoint_has_pc (b, pc, section)) |
4013 | { | |
4014 | others--; | |
4015 | printf_filtered ("%d", b->number); | |
4016 | if (b->thread == -1 && thread != -1) | |
4017 | printf_filtered (" (all threads)"); | |
4018 | else if (b->thread != -1) | |
4019 | printf_filtered (" (thread %d)", b->thread); | |
4020 | printf_filtered ("%s%s ", | |
4021 | ((b->enable_state == bp_disabled || | |
4022 | b->enable_state == bp_call_disabled) | |
4023 | ? " (disabled)" | |
4024 | : b->enable_state == bp_permanent | |
4025 | ? " (permanent)" | |
4026 | : ""), | |
4027 | (others > 1) ? "," | |
4028 | : ((others == 1) ? " and" : "")); | |
4029 | } | |
a3f17187 | 4030 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4031 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4032 | printf_filtered (".\n"); |
4033 | } | |
4034 | } | |
4035 | \f | |
4036 | /* Set the default place to put a breakpoint | |
4037 | for the `break' command with no arguments. */ | |
4038 | ||
4039 | void | |
fba45db2 KB |
4040 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4041 | int line) | |
c906108c SS |
4042 | { |
4043 | default_breakpoint_valid = valid; | |
4044 | default_breakpoint_address = addr; | |
4045 | default_breakpoint_symtab = symtab; | |
4046 | default_breakpoint_line = line; | |
4047 | } | |
4048 | ||
e4f237da KB |
4049 | /* Return true iff it is meaningful to use the address member of |
4050 | BPT. For some breakpoint types, the address member is irrelevant | |
4051 | and it makes no sense to attempt to compare it to other addresses | |
4052 | (or use it for any other purpose either). | |
4053 | ||
4054 | More specifically, each of the following breakpoint types will always | |
4055 | have a zero valued address and we don't want check_duplicates() to mark | |
4056 | breakpoints of any of these types to be a duplicate of an actual | |
4057 | breakpoint at address zero: | |
4058 | ||
4059 | bp_watchpoint | |
4060 | bp_hardware_watchpoint | |
4061 | bp_read_watchpoint | |
4062 | bp_access_watchpoint | |
4063 | bp_catch_exec | |
4064 | bp_longjmp_resume | |
4065 | bp_catch_fork | |
4066 | bp_catch_vork */ | |
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 | |
4077 | && type != bp_catch_exec | |
4078 | && type != bp_longjmp_resume | |
4079 | && type != bp_catch_fork | |
4080 | && type != bp_catch_vfork); | |
4081 | } | |
4082 | ||
9f60f21b | 4083 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4084 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4085 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4086 | If we have a permanent breakpoint at the same place as BPT, make |
4087 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4088 | |
4089 | static void | |
0d381245 | 4090 | check_duplicates_for (CORE_ADDR address, asection *section) |
c906108c | 4091 | { |
075f6582 | 4092 | struct bp_location *b; |
52f0bd74 | 4093 | int count = 0; |
075f6582 | 4094 | struct bp_location *perm_bp = 0; |
c906108c | 4095 | |
075f6582 DJ |
4096 | ALL_BP_LOCATIONS (b) |
4097 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4098 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4099 | && b->enabled |
4100 | && !b->shlib_disabled | |
075f6582 DJ |
4101 | && b->address == address /* address / overlay match */ |
4102 | && (!overlay_debugging || b->section == section) | |
4103 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4104 | { |
c2c6d25f | 4105 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4106 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4107 | { |
4108 | perm_bp = b; | |
4109 | break; | |
4110 | } | |
4111 | ||
c5aa993b | 4112 | count++; |
075f6582 | 4113 | b->duplicate = count > 1; |
c5aa993b | 4114 | } |
c2c6d25f JM |
4115 | |
4116 | /* If we found a permanent breakpoint at this address, go over the | |
4117 | list again and declare all the other breakpoints there to be the | |
4118 | duplicates. */ | |
4119 | if (perm_bp) | |
4120 | { | |
075f6582 | 4121 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4122 | |
4123 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4124 | if (! perm_bp->inserted) |
8e65ff28 | 4125 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4126 | _("allegedly permanent breakpoint is not " |
4127 | "actually inserted")); | |
c2c6d25f | 4128 | |
075f6582 | 4129 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4130 | if (b != perm_bp) |
4131 | { | |
075f6582 | 4132 | if (b->owner->enable_state != bp_disabled |
075f6582 | 4133 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4134 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4135 | && b->address == address /* address / overlay match */ |
4136 | && (!overlay_debugging || b->section == section) | |
4137 | && breakpoint_address_is_meaningful (b->owner)) | |
4138 | { | |
4139 | if (b->inserted) | |
4140 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4141 | _("another breakpoint was inserted on top of " |
4142 | "a permanent breakpoint")); | |
075f6582 DJ |
4143 | |
4144 | b->duplicate = 1; | |
4145 | } | |
c2c6d25f JM |
4146 | } |
4147 | } | |
c906108c SS |
4148 | } |
4149 | ||
0d381245 VP |
4150 | static void |
4151 | check_duplicates (struct breakpoint *bpt) | |
4152 | { | |
4153 | struct bp_location *bl = bpt->loc; | |
4154 | ||
4155 | if (! breakpoint_address_is_meaningful (bpt)) | |
4156 | return; | |
4157 | ||
4158 | for (; bl; bl = bl->next) | |
4159 | check_duplicates_for (bl->address, bl->section); | |
4160 | } | |
4161 | ||
76897487 KB |
4162 | static void |
4163 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4164 | int bnum, int have_bnum) | |
4165 | { | |
4166 | char astr1[40]; | |
4167 | char astr2[40]; | |
4168 | ||
bb599908 PH |
4169 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4170 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4171 | if (have_bnum) |
8a3fe4f8 | 4172 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4173 | bnum, astr1, astr2); |
4174 | else | |
8a3fe4f8 | 4175 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4176 | } |
4177 | ||
4178 | /* Adjust a breakpoint's address to account for architectural constraints | |
4179 | on breakpoint placement. Return the adjusted address. Note: Very | |
4180 | few targets require this kind of adjustment. For most targets, | |
4181 | this function is simply the identity function. */ | |
4182 | ||
4183 | static CORE_ADDR | |
88f7da05 | 4184 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4185 | { |
4186 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4187 | { | |
4188 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4189 | return bpaddr; | |
4190 | } | |
88f7da05 KB |
4191 | else if (bptype == bp_watchpoint |
4192 | || bptype == bp_hardware_watchpoint | |
4193 | || bptype == bp_read_watchpoint | |
4194 | || bptype == bp_access_watchpoint | |
4195 | || bptype == bp_catch_fork | |
4196 | || bptype == bp_catch_vfork | |
4197 | || bptype == bp_catch_exec) | |
4198 | { | |
4199 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4200 | have their addresses modified. */ | |
4201 | return bpaddr; | |
4202 | } | |
76897487 KB |
4203 | else |
4204 | { | |
4205 | CORE_ADDR adjusted_bpaddr; | |
4206 | ||
4207 | /* Some targets have architectural constraints on the placement | |
4208 | of breakpoint instructions. Obtain the adjusted address. */ | |
4209 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4210 | bpaddr); | |
4211 | ||
4212 | /* An adjusted breakpoint address can significantly alter | |
4213 | a user's expectations. Print a warning if an adjustment | |
4214 | is required. */ | |
4215 | if (adjusted_bpaddr != bpaddr) | |
4216 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4217 | ||
4218 | return adjusted_bpaddr; | |
4219 | } | |
4220 | } | |
4221 | ||
7cc221ef DJ |
4222 | /* Allocate a struct bp_location. */ |
4223 | ||
26bb91f3 | 4224 | static struct bp_location * |
e049a4b5 | 4225 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4226 | { |
4227 | struct bp_location *loc, *loc_p; | |
4228 | ||
4229 | loc = xmalloc (sizeof (struct bp_location)); | |
4230 | memset (loc, 0, sizeof (*loc)); | |
4231 | ||
e049a4b5 | 4232 | loc->owner = bpt; |
511a6cd4 | 4233 | loc->cond = NULL; |
0d381245 VP |
4234 | loc->shlib_disabled = 0; |
4235 | loc->enabled = 1; | |
e049a4b5 DJ |
4236 | |
4237 | switch (bp_type) | |
4238 | { | |
4239 | case bp_breakpoint: | |
4240 | case bp_until: | |
4241 | case bp_finish: | |
4242 | case bp_longjmp: | |
4243 | case bp_longjmp_resume: | |
4244 | case bp_step_resume: | |
e049a4b5 DJ |
4245 | case bp_watchpoint_scope: |
4246 | case bp_call_dummy: | |
4247 | case bp_shlib_event: | |
4248 | case bp_thread_event: | |
4249 | case bp_overlay_event: | |
4250 | case bp_catch_load: | |
4251 | case bp_catch_unload: | |
4252 | loc->loc_type = bp_loc_software_breakpoint; | |
4253 | break; | |
4254 | case bp_hardware_breakpoint: | |
4255 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4256 | break; | |
4257 | case bp_hardware_watchpoint: | |
4258 | case bp_read_watchpoint: | |
4259 | case bp_access_watchpoint: | |
4260 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4261 | break; | |
4262 | case bp_watchpoint: | |
4263 | case bp_catch_fork: | |
4264 | case bp_catch_vfork: | |
4265 | case bp_catch_exec: | |
e049a4b5 DJ |
4266 | loc->loc_type = bp_loc_other; |
4267 | break; | |
4268 | default: | |
e2e0b3e5 | 4269 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4270 | } |
4271 | ||
7cc221ef DJ |
4272 | return loc; |
4273 | } | |
4274 | ||
fe3f5fa8 VP |
4275 | static void free_bp_location (struct bp_location *loc) |
4276 | { | |
4277 | if (loc->cond) | |
4278 | xfree (loc->cond); | |
74960c60 VP |
4279 | |
4280 | if (loc->function_name) | |
4281 | xfree (loc->function_name); | |
4282 | ||
fe3f5fa8 VP |
4283 | xfree (loc); |
4284 | } | |
4285 | ||
0d381245 VP |
4286 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4287 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4288 | |
c40e75cd | 4289 | static struct breakpoint * |
0d381245 | 4290 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4291 | { |
52f0bd74 | 4292 | struct breakpoint *b, *b1; |
c906108c SS |
4293 | |
4294 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4295 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4296 | |
4d28f7a8 | 4297 | b->type = bptype; |
c906108c SS |
4298 | b->language = current_language->la_language; |
4299 | b->input_radix = input_radix; | |
4300 | b->thread = -1; | |
b5de0fa7 | 4301 | b->enable_state = bp_enabled; |
c906108c SS |
4302 | b->next = 0; |
4303 | b->silent = 0; | |
4304 | b->ignore_count = 0; | |
4305 | b->commands = NULL; | |
818dd999 | 4306 | b->frame_id = null_frame_id; |
c906108c SS |
4307 | b->dll_pathname = NULL; |
4308 | b->triggered_dll_pathname = NULL; | |
4309 | b->forked_inferior_pid = 0; | |
4310 | b->exec_pathname = NULL; | |
3086aeae | 4311 | b->ops = NULL; |
0d381245 | 4312 | b->condition_not_parsed = 0; |
c906108c SS |
4313 | |
4314 | /* Add this breakpoint to the end of the chain | |
4315 | so that a list of breakpoints will come out in order | |
4316 | of increasing numbers. */ | |
4317 | ||
4318 | b1 = breakpoint_chain; | |
4319 | if (b1 == 0) | |
4320 | breakpoint_chain = b; | |
4321 | else | |
4322 | { | |
4323 | while (b1->next) | |
4324 | b1 = b1->next; | |
4325 | b1->next = b; | |
4326 | } | |
0d381245 VP |
4327 | return b; |
4328 | } | |
4329 | ||
4330 | /* Initialize loc->function_name. */ | |
4331 | static void | |
4332 | set_breakpoint_location_function (struct bp_location *loc) | |
4333 | { | |
4334 | if (loc->owner->type == bp_breakpoint | |
4335 | || loc->owner->type == bp_hardware_breakpoint) | |
4336 | { | |
4337 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4338 | NULL, NULL); | |
4339 | if (loc->function_name) | |
4340 | loc->function_name = xstrdup (loc->function_name); | |
4341 | } | |
4342 | } | |
4343 | ||
4344 | /* set_raw_breakpoint is a low level routine for allocating and | |
4345 | partially initializing a breakpoint of type BPTYPE. The newly | |
4346 | created breakpoint's address, section, source file name, and line | |
4347 | number are provided by SAL. The newly created and partially | |
4348 | initialized breakpoint is added to the breakpoint chain and | |
4349 | is also returned as the value of this function. | |
4350 | ||
4351 | It is expected that the caller will complete the initialization of | |
4352 | the newly created breakpoint struct as well as output any status | |
4353 | information regarding the creation of a new breakpoint. In | |
4354 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4355 | number! Care should be taken to not allow an error to occur | |
4356 | prior to completing the initialization of the breakpoint. If this | |
4357 | should happen, a bogus breakpoint will be left on the chain. */ | |
4358 | ||
4359 | struct breakpoint * | |
4360 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4361 | { | |
4362 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4363 | CORE_ADDR adjusted_address; | |
4364 | ||
4365 | /* Adjust the breakpoint's address prior to allocating a location. | |
4366 | Once we call allocate_bp_location(), that mostly uninitialized | |
4367 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4368 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4369 | not want its scan of the location chain to find a breakpoint and |
4370 | location that's only been partially initialized. */ | |
4371 | adjusted_address = adjust_breakpoint_address (sal.pc, bptype); | |
4372 | ||
4373 | b->loc = allocate_bp_location (b, bptype); | |
4374 | b->loc->requested_address = sal.pc; | |
4375 | b->loc->address = adjusted_address; | |
4376 | ||
4377 | if (sal.symtab == NULL) | |
4378 | b->source_file = NULL; | |
4379 | else | |
4380 | b->source_file = savestring (sal.symtab->filename, | |
4381 | strlen (sal.symtab->filename)); | |
4382 | b->loc->section = sal.section; | |
4383 | b->line_number = sal.line; | |
4384 | ||
4385 | set_breakpoint_location_function (b->loc); | |
c906108c | 4386 | |
c906108c SS |
4387 | breakpoints_changed (); |
4388 | ||
4389 | return b; | |
4390 | } | |
4391 | ||
c2c6d25f JM |
4392 | |
4393 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4394 | instruction, hard-wired into the inferior's code. */ | |
4395 | void | |
4396 | make_breakpoint_permanent (struct breakpoint *b) | |
4397 | { | |
0d381245 | 4398 | struct bp_location *bl; |
b5de0fa7 | 4399 | b->enable_state = bp_permanent; |
c2c6d25f | 4400 | |
0d381245 VP |
4401 | /* By definition, permanent breakpoints are already present in the code. |
4402 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4403 | is called in just one place, so it's hard to say if it's reasonable | |
4404 | to have permanent breakpoint with multiple locations or not, | |
4405 | but it's easy to implmement. */ | |
4406 | for (bl = b->loc; bl; bl = bl->next) | |
4407 | bl->inserted = 1; | |
c2c6d25f JM |
4408 | } |
4409 | ||
1900040c MS |
4410 | static struct breakpoint * |
4411 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4412 | { | |
4413 | static int internal_breakpoint_number = -1; | |
4414 | struct symtab_and_line sal; | |
4415 | struct breakpoint *b; | |
4416 | ||
fe39c653 | 4417 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4418 | |
4419 | sal.pc = address; | |
4420 | sal.section = find_pc_overlay (sal.pc); | |
4421 | ||
4422 | b = set_raw_breakpoint (sal, type); | |
4423 | b->number = internal_breakpoint_number--; | |
4424 | b->disposition = disp_donttouch; | |
4425 | ||
4426 | return b; | |
4427 | } | |
4428 | ||
c906108c SS |
4429 | |
4430 | static void | |
fba45db2 | 4431 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4432 | { |
c906108c | 4433 | struct breakpoint *b; |
1900040c | 4434 | struct minimal_symbol *m; |
c906108c | 4435 | |
1900040c MS |
4436 | if (func_name == NULL) |
4437 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4438 | else | |
c906108c | 4439 | { |
5520a790 | 4440 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4441 | return; |
1900040c MS |
4442 | |
4443 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4444 | } |
c906108c | 4445 | |
b5de0fa7 | 4446 | b->enable_state = bp_disabled; |
c906108c SS |
4447 | b->silent = 1; |
4448 | if (func_name) | |
4fcf66da | 4449 | b->addr_string = xstrdup (func_name); |
74960c60 | 4450 | update_global_location_list (); |
c906108c SS |
4451 | } |
4452 | ||
53a5351d JM |
4453 | /* Call this routine when stepping and nexting to enable a breakpoint |
4454 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4455 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4456 | ||
4457 | void | |
fba45db2 | 4458 | enable_longjmp_breakpoint (void) |
c906108c | 4459 | { |
52f0bd74 | 4460 | struct breakpoint *b; |
c906108c SS |
4461 | |
4462 | ALL_BREAKPOINTS (b) | |
4463 | if (b->type == bp_longjmp) | |
c5aa993b | 4464 | { |
b5de0fa7 | 4465 | b->enable_state = bp_enabled; |
74960c60 | 4466 | update_global_location_list (); |
c5aa993b | 4467 | } |
c906108c SS |
4468 | } |
4469 | ||
4470 | void | |
fba45db2 | 4471 | disable_longjmp_breakpoint (void) |
c906108c | 4472 | { |
52f0bd74 | 4473 | struct breakpoint *b; |
c906108c SS |
4474 | |
4475 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4476 | if (b->type == bp_longjmp |
c906108c | 4477 | || b->type == bp_longjmp_resume) |
c5aa993b | 4478 | { |
b5de0fa7 | 4479 | b->enable_state = bp_disabled; |
74960c60 | 4480 | update_global_location_list (); |
c5aa993b | 4481 | } |
c906108c SS |
4482 | } |
4483 | ||
1900040c MS |
4484 | static void |
4485 | create_overlay_event_breakpoint (char *func_name) | |
4486 | { | |
4487 | struct breakpoint *b; | |
4488 | struct minimal_symbol *m; | |
4489 | ||
5520a790 | 4490 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4491 | return; |
4492 | ||
4493 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4494 | bp_overlay_event); | |
4495 | b->addr_string = xstrdup (func_name); | |
4496 | ||
4497 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4498 | { |
4499 | b->enable_state = bp_enabled; | |
4500 | overlay_events_enabled = 1; | |
4501 | } | |
1900040c | 4502 | else |
c02f5703 MS |
4503 | { |
4504 | b->enable_state = bp_disabled; | |
4505 | overlay_events_enabled = 0; | |
4506 | } | |
74960c60 | 4507 | update_global_location_list (); |
1900040c MS |
4508 | } |
4509 | ||
4510 | void | |
4511 | enable_overlay_breakpoints (void) | |
4512 | { | |
52f0bd74 | 4513 | struct breakpoint *b; |
1900040c MS |
4514 | |
4515 | ALL_BREAKPOINTS (b) | |
4516 | if (b->type == bp_overlay_event) | |
4517 | { | |
4518 | b->enable_state = bp_enabled; | |
74960c60 | 4519 | update_global_location_list (); |
c02f5703 | 4520 | overlay_events_enabled = 1; |
1900040c MS |
4521 | } |
4522 | } | |
4523 | ||
4524 | void | |
4525 | disable_overlay_breakpoints (void) | |
4526 | { | |
52f0bd74 | 4527 | struct breakpoint *b; |
1900040c MS |
4528 | |
4529 | ALL_BREAKPOINTS (b) | |
4530 | if (b->type == bp_overlay_event) | |
4531 | { | |
4532 | b->enable_state = bp_disabled; | |
74960c60 | 4533 | update_global_location_list (); |
c02f5703 | 4534 | overlay_events_enabled = 0; |
1900040c MS |
4535 | } |
4536 | } | |
4537 | ||
c4093a6a | 4538 | struct breakpoint * |
fba45db2 | 4539 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4540 | { |
4541 | struct breakpoint *b; | |
c4093a6a | 4542 | |
1900040c | 4543 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4544 | |
b5de0fa7 | 4545 | b->enable_state = bp_enabled; |
c4093a6a | 4546 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4547 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4548 | |
74960c60 VP |
4549 | update_global_location_list_nothrow (); |
4550 | ||
c4093a6a JM |
4551 | return b; |
4552 | } | |
4553 | ||
4554 | void | |
4555 | remove_thread_event_breakpoints (void) | |
4556 | { | |
4557 | struct breakpoint *b, *temp; | |
4558 | ||
4559 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4560 | if (b->type == bp_thread_event) | |
4561 | delete_breakpoint (b); | |
4562 | } | |
4563 | ||
0101ce28 JJ |
4564 | struct captured_parse_breakpoint_args |
4565 | { | |
4566 | char **arg_p; | |
4567 | struct symtabs_and_lines *sals_p; | |
4568 | char ***addr_string_p; | |
4569 | int *not_found_ptr; | |
4570 | }; | |
4571 | ||
4572 | struct lang_and_radix | |
4573 | { | |
4574 | enum language lang; | |
4575 | int radix; | |
4576 | }; | |
4577 | ||
0101ce28 | 4578 | |
cae688ec JJ |
4579 | void |
4580 | remove_solib_event_breakpoints (void) | |
4581 | { | |
4582 | struct breakpoint *b, *temp; | |
4583 | ||
4584 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4585 | if (b->type == bp_shlib_event) | |
4586 | delete_breakpoint (b); | |
4587 | } | |
4588 | ||
4589 | struct breakpoint * | |
4590 | create_solib_event_breakpoint (CORE_ADDR address) | |
4591 | { | |
4592 | struct breakpoint *b; | |
4593 | ||
4594 | b = create_internal_breakpoint (address, bp_shlib_event); | |
74960c60 | 4595 | update_global_location_list_nothrow (); |
cae688ec JJ |
4596 | return b; |
4597 | } | |
4598 | ||
4599 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4600 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4601 | ||
4602 | void | |
cb851954 | 4603 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4604 | { |
0d381245 | 4605 | struct bp_location *loc; |
cae688ec JJ |
4606 | int disabled_shlib_breaks = 0; |
4607 | ||
0d381245 | 4608 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4609 | { |
0d381245 VP |
4610 | struct breakpoint *b = loc->owner; |
4611 | /* We apply the check to all breakpoints, including disabled | |
4612 | for those with loc->duplicate set. This is so that when breakpoint | |
4613 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4614 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4615 | to insert those breakpoints and fail. */ | |
a77053c2 | 4616 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
0d381245 | 4617 | && !loc->shlib_disabled |
a77053c2 | 4618 | #ifdef PC_SOLIB |
0d381245 | 4619 | && PC_SOLIB (loc->address) |
a77053c2 | 4620 | #else |
0d381245 | 4621 | && solib_address (loc->address) |
a77053c2 MK |
4622 | #endif |
4623 | ) | |
0d381245 VP |
4624 | { |
4625 | loc->shlib_disabled = 1; | |
4626 | } | |
cae688ec JJ |
4627 | } |
4628 | } | |
4629 | ||
84acb35a JJ |
4630 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4631 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4632 | ||
75149521 | 4633 | static void |
84acb35a JJ |
4634 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4635 | { | |
0d381245 | 4636 | struct bp_location *loc; |
84acb35a JJ |
4637 | int disabled_shlib_breaks = 0; |
4638 | ||
0d381245 | 4639 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4640 | { |
0d381245 VP |
4641 | struct breakpoint *b = loc->owner; |
4642 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4643 | || loc->loc_type == bp_loc_software_breakpoint) | |
4644 | && !loc->shlib_disabled) | |
84acb35a | 4645 | { |
a77053c2 | 4646 | #ifdef PC_SOLIB |
0d381245 | 4647 | char *so_name = PC_SOLIB (loc->address); |
a77053c2 | 4648 | #else |
0d381245 | 4649 | char *so_name = solib_address (loc->address); |
a77053c2 MK |
4650 | #endif |
4651 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a | 4652 | { |
0d381245 | 4653 | loc->shlib_disabled = 1; |
84acb35a JJ |
4654 | /* At this point, we cannot rely on remove_breakpoint |
4655 | succeeding so we must mark the breakpoint as not inserted | |
4656 | to prevent future errors occurring in remove_breakpoints. */ | |
0d381245 | 4657 | loc->inserted = 0; |
84acb35a JJ |
4658 | if (!disabled_shlib_breaks) |
4659 | { | |
4660 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4661 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4662 | so_name); |
4663 | } | |
4664 | disabled_shlib_breaks = 1; | |
4665 | } | |
4666 | } | |
4667 | } | |
84acb35a JJ |
4668 | } |
4669 | ||
c906108c | 4670 | static void |
fba45db2 KB |
4671 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4672 | enum bptype bp_kind) | |
c906108c | 4673 | { |
c5aa993b JM |
4674 | struct symtab_and_line sal; |
4675 | struct breakpoint *b; | |
4676 | int thread = -1; /* All threads. */ | |
4677 | ||
fe39c653 | 4678 | init_sal (&sal); |
c906108c SS |
4679 | sal.pc = 0; |
4680 | sal.symtab = NULL; | |
4681 | sal.line = 0; | |
c5aa993b | 4682 | |
4d28f7a8 | 4683 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4684 | set_breakpoint_count (breakpoint_count + 1); |
4685 | b->number = breakpoint_count; | |
53a5351d JM |
4686 | b->cond_string = (cond_string == NULL) ? |
4687 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4688 | b->thread = thread; |
4689 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4690 | b->enable_state = bp_enabled; |
4691 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4692 | b->forked_inferior_pid = 0; |
74960c60 VP |
4693 | update_global_location_list (); |
4694 | ||
c5aa993b | 4695 | |
c906108c SS |
4696 | mention (b); |
4697 | } | |
4698 | ||
9b70b993 | 4699 | static void |
fba45db2 | 4700 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4701 | { |
4702 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4703 | } | |
c5aa993b | 4704 | |
9b70b993 | 4705 | static void |
fba45db2 | 4706 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4707 | { |
4708 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4709 | } | |
4710 | ||
9b70b993 | 4711 | static void |
fba45db2 | 4712 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4713 | { |
c5aa993b JM |
4714 | struct symtab_and_line sal; |
4715 | struct breakpoint *b; | |
4716 | int thread = -1; /* All threads. */ | |
c906108c | 4717 | |
fe39c653 | 4718 | init_sal (&sal); |
c906108c SS |
4719 | sal.pc = 0; |
4720 | sal.symtab = NULL; | |
4721 | sal.line = 0; | |
4722 | ||
4d28f7a8 | 4723 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4724 | set_breakpoint_count (breakpoint_count + 1); |
4725 | b->number = breakpoint_count; | |
53a5351d JM |
4726 | b->cond_string = (cond_string == NULL) ? |
4727 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4728 | b->thread = thread; |
4729 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4730 | b->enable_state = bp_enabled; |
4731 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
74960c60 | 4732 | update_global_location_list (); |
c906108c | 4733 | |
c906108c SS |
4734 | mention (b); |
4735 | } | |
4736 | ||
4737 | static int | |
fba45db2 | 4738 | hw_breakpoint_used_count (void) |
c906108c | 4739 | { |
52f0bd74 | 4740 | struct breakpoint *b; |
c906108c SS |
4741 | int i = 0; |
4742 | ||
4743 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4744 | { |
b5de0fa7 | 4745 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4746 | i++; |
4747 | } | |
c906108c SS |
4748 | |
4749 | return i; | |
4750 | } | |
4751 | ||
4752 | static int | |
fba45db2 | 4753 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4754 | { |
52f0bd74 | 4755 | struct breakpoint *b; |
c906108c SS |
4756 | int i = 0; |
4757 | ||
4758 | *other_type_used = 0; | |
4759 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4760 | { |
468d015d | 4761 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4762 | { |
4763 | if (b->type == type) | |
4764 | i++; | |
4765 | else if ((b->type == bp_hardware_watchpoint || | |
4766 | b->type == bp_read_watchpoint || | |
468d015d | 4767 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4768 | *other_type_used = 1; |
4769 | } | |
4770 | } | |
c906108c SS |
4771 | return i; |
4772 | } | |
4773 | ||
53a5351d JM |
4774 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4775 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4776 | |
53a5351d JM |
4777 | FIXME - This ought to be done by setting a temporary breakpoint |
4778 | that gets deleted automatically... */ | |
c906108c SS |
4779 | |
4780 | void | |
818dd999 | 4781 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4782 | { |
52f0bd74 | 4783 | struct breakpoint *b; |
c906108c SS |
4784 | |
4785 | ALL_BREAKPOINTS (b) | |
4786 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4787 | { |
5cab636d | 4788 | b->loc->requested_address = pc; |
88f7da05 KB |
4789 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4790 | b->type); | |
b5de0fa7 | 4791 | b->enable_state = bp_enabled; |
818dd999 | 4792 | b->frame_id = frame_id; |
74960c60 | 4793 | update_global_location_list (); |
c5aa993b JM |
4794 | return; |
4795 | } | |
c906108c SS |
4796 | } |
4797 | ||
4798 | void | |
fba45db2 | 4799 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4800 | { |
c5aa993b | 4801 | struct breakpoint *b; |
c906108c SS |
4802 | |
4803 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4804 | { |
4805 | if (((b->type == bp_watchpoint) | |
4806 | || (b->type == bp_hardware_watchpoint) | |
4807 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4808 | || (b->type == bp_access_watchpoint)) |
468d015d | 4809 | && breakpoint_enabled (b)) |
c5aa993b | 4810 | { |
b5de0fa7 | 4811 | b->enable_state = bp_call_disabled; |
74960c60 | 4812 | update_global_location_list (); |
c5aa993b JM |
4813 | } |
4814 | } | |
c906108c SS |
4815 | } |
4816 | ||
4817 | void | |
fba45db2 | 4818 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4819 | { |
c5aa993b | 4820 | struct breakpoint *b; |
c906108c SS |
4821 | |
4822 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4823 | { |
4824 | if (((b->type == bp_watchpoint) | |
4825 | || (b->type == bp_hardware_watchpoint) | |
4826 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4827 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4828 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4829 | { |
b5de0fa7 | 4830 | b->enable_state = bp_enabled; |
74960c60 | 4831 | update_global_location_list (); |
c5aa993b JM |
4832 | } |
4833 | } | |
c906108c SS |
4834 | } |
4835 | ||
4836 | ||
4837 | /* Set a breakpoint that will evaporate an end of command | |
4838 | at address specified by SAL. | |
4839 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4840 | ||
4841 | struct breakpoint * | |
818dd999 | 4842 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4843 | enum bptype type) |
c906108c | 4844 | { |
52f0bd74 | 4845 | struct breakpoint *b; |
4d28f7a8 | 4846 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4847 | b->enable_state = bp_enabled; |
4848 | b->disposition = disp_donttouch; | |
818dd999 | 4849 | b->frame_id = frame_id; |
c906108c SS |
4850 | |
4851 | /* If we're debugging a multi-threaded program, then we | |
4852 | want momentary breakpoints to be active in only a | |
4853 | single thread of control. */ | |
39f77062 KB |
4854 | if (in_thread_list (inferior_ptid)) |
4855 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 4856 | |
74960c60 VP |
4857 | update_global_location_list_nothrow (); |
4858 | ||
c906108c SS |
4859 | return b; |
4860 | } | |
c906108c | 4861 | \f |
c5aa993b | 4862 | |
c906108c SS |
4863 | /* Tell the user we have just set a breakpoint B. */ |
4864 | ||
4865 | static void | |
fba45db2 | 4866 | mention (struct breakpoint *b) |
c906108c SS |
4867 | { |
4868 | int say_where = 0; | |
3b31d625 | 4869 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4870 | struct ui_stream *stb; |
4871 | ||
4872 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4873 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4874 | |
9a4105ab AC |
4875 | /* FIXME: This is misplaced; mention() is called by things (like |
4876 | hitting a watchpoint) other than breakpoint creation. It should | |
4877 | be possible to clean this up and at the same time replace the | |
4878 | random calls to breakpoint_changed with this hook, as has already | |
4879 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4880 | if (deprecated_create_breakpoint_hook) | |
4881 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4882 | breakpoint_create_event (b->number); |
c906108c | 4883 | |
3086aeae DJ |
4884 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4885 | b->ops->print_mention (b); | |
4886 | else | |
4887 | switch (b->type) | |
4888 | { | |
4889 | case bp_none: | |
a3f17187 | 4890 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4891 | break; |
4892 | case bp_watchpoint: | |
4893 | ui_out_text (uiout, "Watchpoint "); | |
4894 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4895 | ui_out_field_int (uiout, "number", b->number); | |
4896 | ui_out_text (uiout, ": "); | |
4897 | print_expression (b->exp, stb->stream); | |
4898 | ui_out_field_stream (uiout, "exp", stb); | |
4899 | do_cleanups (ui_out_chain); | |
4900 | break; | |
4901 | case bp_hardware_watchpoint: | |
4902 | ui_out_text (uiout, "Hardware watchpoint "); | |
4903 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4904 | ui_out_field_int (uiout, "number", b->number); | |
4905 | ui_out_text (uiout, ": "); | |
4906 | print_expression (b->exp, stb->stream); | |
4907 | ui_out_field_stream (uiout, "exp", stb); | |
4908 | do_cleanups (ui_out_chain); | |
4909 | break; | |
4910 | case bp_read_watchpoint: | |
4911 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4912 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4913 | ui_out_field_int (uiout, "number", b->number); | |
4914 | ui_out_text (uiout, ": "); | |
4915 | print_expression (b->exp, stb->stream); | |
4916 | ui_out_field_stream (uiout, "exp", stb); | |
4917 | do_cleanups (ui_out_chain); | |
4918 | break; | |
4919 | case bp_access_watchpoint: | |
4920 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4921 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4922 | ui_out_field_int (uiout, "number", b->number); | |
4923 | ui_out_text (uiout, ": "); | |
4924 | print_expression (b->exp, stb->stream); | |
4925 | ui_out_field_stream (uiout, "exp", stb); | |
4926 | do_cleanups (ui_out_chain); | |
4927 | break; | |
4928 | case bp_breakpoint: | |
4929 | if (ui_out_is_mi_like_p (uiout)) | |
4930 | { | |
4931 | say_where = 0; | |
4932 | break; | |
4933 | } | |
2cec12e5 AR |
4934 | if (b->disposition == disp_del) |
4935 | printf_filtered (_("Temporary breakpoint")); | |
4936 | else | |
4937 | printf_filtered (_("Breakpoint")); | |
4938 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
4939 | say_where = 1; |
4940 | break; | |
4941 | case bp_hardware_breakpoint: | |
4942 | if (ui_out_is_mi_like_p (uiout)) | |
4943 | { | |
4944 | say_where = 0; | |
4945 | break; | |
4946 | } | |
a3f17187 | 4947 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
4948 | say_where = 1; |
4949 | break; | |
4950 | case bp_catch_load: | |
4951 | case bp_catch_unload: | |
a3f17187 | 4952 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
4953 | b->number, |
4954 | (b->type == bp_catch_load) ? "load" : "unload", | |
4955 | (b->dll_pathname != NULL) ? | |
4956 | b->dll_pathname : "<any library>"); | |
4957 | break; | |
4958 | case bp_catch_fork: | |
4959 | case bp_catch_vfork: | |
a3f17187 | 4960 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4961 | b->number, |
4962 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4963 | break; | |
4964 | case bp_catch_exec: | |
a3f17187 | 4965 | printf_filtered (_("Catchpoint %d (exec)"), |
3086aeae DJ |
4966 | b->number); |
4967 | break; | |
3086aeae DJ |
4968 | |
4969 | case bp_until: | |
4970 | case bp_finish: | |
4971 | case bp_longjmp: | |
4972 | case bp_longjmp_resume: | |
4973 | case bp_step_resume: | |
3086aeae DJ |
4974 | case bp_call_dummy: |
4975 | case bp_watchpoint_scope: | |
4976 | case bp_shlib_event: | |
4977 | case bp_thread_event: | |
4978 | case bp_overlay_event: | |
4979 | break; | |
4980 | } | |
c906108c | 4981 | |
c906108c SS |
4982 | if (say_where) |
4983 | { | |
a3f17187 AC |
4984 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
4985 | single string. */ | |
0d381245 | 4986 | if (b->loc == NULL) |
c906108c | 4987 | { |
a3f17187 | 4988 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
4989 | } |
4990 | else | |
4991 | { | |
4992 | if (addressprint || b->source_file == NULL) | |
4993 | { | |
4994 | printf_filtered (" at "); | |
ed49a04f | 4995 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
4996 | } |
4997 | if (b->source_file) | |
4998 | printf_filtered (": file %s, line %d.", | |
4999 | b->source_file, b->line_number); | |
0d381245 VP |
5000 | |
5001 | if (b->loc->next) | |
5002 | { | |
5003 | struct bp_location *loc = b->loc; | |
5004 | int n = 0; | |
5005 | for (; loc; loc = loc->next) | |
5006 | ++n; | |
5007 | printf_filtered (" (%d locations)", n); | |
5008 | } | |
5009 | ||
c906108c | 5010 | } |
c906108c | 5011 | } |
8b93c638 | 5012 | do_cleanups (old_chain); |
9dc5e2a9 | 5013 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5014 | return; |
c906108c SS |
5015 | printf_filtered ("\n"); |
5016 | } | |
c906108c | 5017 | \f |
c5aa993b | 5018 | |
0d381245 VP |
5019 | static struct bp_location * |
5020 | add_location_to_breakpoint (struct breakpoint *b, enum bptype bptype, | |
5021 | const struct symtab_and_line *sal) | |
5022 | { | |
5023 | struct bp_location *loc, **tmp; | |
5024 | ||
5025 | loc = allocate_bp_location (b, bptype); | |
5026 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
5027 | ; | |
5028 | *tmp = loc; | |
5029 | loc->requested_address = sal->pc; | |
5030 | loc->address = adjust_breakpoint_address (loc->requested_address, | |
5031 | bptype); | |
5032 | loc->section = sal->section; | |
5033 | ||
5034 | set_breakpoint_location_function (loc); | |
5035 | return loc; | |
5036 | } | |
c3f6f71d | 5037 | |
018d34a4 VP |
5038 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5039 | as textual description of the location, and COND_STRING | |
db107f19 | 5040 | as condition expression. */ |
018d34a4 VP |
5041 | |
5042 | static void | |
0d381245 | 5043 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5044 | char *cond_string, |
5045 | enum bptype type, enum bpdisp disposition, | |
db107f19 | 5046 | int thread, int ignore_count, int from_tty) |
018d34a4 | 5047 | { |
0d381245 VP |
5048 | struct breakpoint *b = NULL; |
5049 | int i; | |
018d34a4 VP |
5050 | |
5051 | if (type == bp_hardware_breakpoint) | |
5052 | { | |
5053 | int i = hw_breakpoint_used_count (); | |
5054 | int target_resources_ok = | |
5055 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5056 | i + 1, 0); | |
5057 | if (target_resources_ok == 0) | |
5058 | error (_("No hardware breakpoint support in the target.")); | |
5059 | else if (target_resources_ok < 0) | |
5060 | error (_("Hardware breakpoints used exceeds limit.")); | |
5061 | } | |
5062 | ||
0d381245 VP |
5063 | for (i = 0; i < sals.nelts; ++i) |
5064 | { | |
5065 | struct symtab_and_line sal = sals.sals[i]; | |
5066 | struct bp_location *loc; | |
5067 | ||
5068 | if (from_tty) | |
5069 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5070 | ||
5071 | if (i == 0) | |
5072 | { | |
5073 | b = set_raw_breakpoint (sal, type); | |
5074 | set_breakpoint_count (breakpoint_count + 1); | |
5075 | b->number = breakpoint_count; | |
5076 | b->thread = thread; | |
018d34a4 | 5077 | |
0d381245 VP |
5078 | b->cond_string = cond_string; |
5079 | b->ignore_count = ignore_count; | |
5080 | b->enable_state = bp_enabled; | |
5081 | b->disposition = disposition; | |
018d34a4 | 5082 | |
0d381245 VP |
5083 | loc = b->loc; |
5084 | } | |
5085 | else | |
018d34a4 | 5086 | { |
0d381245 VP |
5087 | loc = add_location_to_breakpoint (b, type, &sal); |
5088 | } | |
5089 | ||
5090 | if (b->cond_string) | |
5091 | { | |
5092 | char *arg = b->cond_string; | |
d32a6982 | 5093 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5094 | if (*arg) |
db107f19 | 5095 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5096 | } |
0d381245 | 5097 | } |
018d34a4 VP |
5098 | |
5099 | if (addr_string) | |
5100 | b->addr_string = addr_string; | |
5101 | else | |
5102 | /* addr_string has to be used or breakpoint_re_set will delete | |
5103 | me. */ | |
5104 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5105 | ||
5106 | mention (b); | |
5107 | } | |
5108 | ||
ed0616c6 VP |
5109 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5110 | elements to fill the void space. */ | |
5111 | static void remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
5112 | { | |
5113 | int i = index_to_remove+1; | |
5114 | int last_index = sal->nelts-1; | |
5115 | ||
5116 | for (;i <= last_index; ++i) | |
5117 | sal->sals[i-1] = sal->sals[i]; | |
5118 | ||
5119 | --(sal->nelts); | |
5120 | } | |
5121 | ||
5122 | /* If appropriate, obtains all sals that correspond | |
5123 | to the same file and line as SAL. This is done | |
5124 | only if SAL does not have explicit PC and has | |
5125 | line and file information. If we got just a single | |
5126 | expanded sal, return the original. | |
5127 | ||
5128 | Otherwise, if SAL.explicit_line is not set, filter out | |
5129 | all sals for which the name of enclosing function | |
5130 | is different from SAL. This makes sure that if we have | |
5131 | breakpoint originally set in template instantiation, say | |
5132 | foo<int>(), we won't expand SAL to locations at the same | |
5133 | line in all existing instantiations of 'foo'. | |
5134 | ||
5135 | */ | |
5136 | struct symtabs_and_lines | |
5137 | expand_line_sal_maybe (struct symtab_and_line sal) | |
5138 | { | |
5139 | struct symtabs_and_lines expanded; | |
5140 | CORE_ADDR original_pc = sal.pc; | |
5141 | char *original_function = NULL; | |
5142 | int found; | |
5143 | int i; | |
5144 | ||
5145 | /* If we have explicit pc, don't expand. | |
5146 | If we have no line number, we can't expand. */ | |
5147 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5148 | { | |
5149 | expanded.nelts = 1; | |
5150 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5151 | expanded.sals[0] = sal; | |
5152 | return expanded; | |
5153 | } | |
5154 | ||
5155 | sal.pc = 0; | |
5156 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5157 | ||
5158 | expanded = expand_line_sal (sal); | |
5159 | if (expanded.nelts == 1) | |
5160 | { | |
5161 | /* We had one sal, we got one sal. Without futher | |
5162 | processing, just return the original sal. */ | |
5163 | xfree (expanded.sals); | |
5164 | expanded.nelts = 1; | |
5165 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5166 | sal.pc = original_pc; | |
5167 | expanded.sals[0] = sal; | |
5168 | return expanded; | |
5169 | } | |
5170 | ||
5171 | if (!sal.explicit_line) | |
5172 | { | |
5173 | CORE_ADDR func_addr, func_end; | |
5174 | for (i = 0; i < expanded.nelts; ++i) | |
5175 | { | |
5176 | CORE_ADDR pc = expanded.sals[i].pc; | |
5177 | char *this_function; | |
5178 | if (find_pc_partial_function (pc, &this_function, | |
5179 | &func_addr, &func_end)) | |
5180 | { | |
5181 | if (this_function && | |
5182 | strcmp (this_function, original_function) != 0) | |
5183 | { | |
5184 | remove_sal (&expanded, i); | |
5185 | --i; | |
5186 | } | |
5187 | else if (func_addr == pc) | |
5188 | { | |
5189 | /* We're at beginning of a function, and should | |
5190 | skip prologue. */ | |
5191 | struct symbol *sym = find_pc_function (pc); | |
5192 | if (sym) | |
5193 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5194 | else | |
5195 | expanded.sals[i].pc | |
5196 | = gdbarch_skip_prologue (current_gdbarch, pc); | |
5197 | } | |
5198 | } | |
5199 | } | |
5200 | } | |
5201 | ||
5202 | ||
5203 | if (expanded.nelts <= 1) | |
5204 | { | |
5205 | /* This is un ugly workaround. If we get zero | |
5206 | expanded sals then something is really wrong. | |
5207 | Fix that by returnign the original sal. */ | |
5208 | xfree (expanded.sals); | |
5209 | expanded.nelts = 1; | |
5210 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5211 | sal.pc = original_pc; | |
5212 | expanded.sals[0] = sal; | |
5213 | return expanded; | |
5214 | } | |
5215 | ||
5216 | if (original_pc) | |
5217 | { | |
5218 | found = 0; | |
5219 | for (i = 0; i < expanded.nelts; ++i) | |
5220 | if (expanded.sals[i].pc == original_pc) | |
5221 | { | |
5222 | found = 1; | |
5223 | break; | |
5224 | } | |
5225 | gdb_assert (found); | |
5226 | } | |
5227 | ||
5228 | return expanded; | |
5229 | } | |
5230 | ||
018d34a4 VP |
5231 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5232 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5233 | value. COND_STRING, if not NULL, specified the condition to be | |
5234 | used for all breakpoints. Essentially the only case where | |
5235 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5236 | function. In that case, it's still not possible to specify | |
5237 | separate conditions for different overloaded functions, so | |
5238 | we take just a single condition string. | |
5239 | ||
c3f6f71d | 5240 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5241 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5242 | array contents). If the function fails (error() is called), the |
5243 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5244 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5245 | |
5246 | static void | |
c3f6f71d | 5247 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5248 | char *cond_string, |
c3f6f71d | 5249 | enum bptype type, enum bpdisp disposition, |
db107f19 | 5250 | int thread, int ignore_count, int from_tty) |
c906108c | 5251 | { |
018d34a4 VP |
5252 | int i; |
5253 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5254 | { |
ed0616c6 VP |
5255 | struct symtabs_and_lines expanded = |
5256 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5257 | |
ed0616c6 | 5258 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5259 | cond_string, type, disposition, |
db107f19 | 5260 | thread, ignore_count, from_tty); |
c3f6f71d | 5261 | } |
74960c60 VP |
5262 | |
5263 | update_global_location_list (); | |
c3f6f71d | 5264 | } |
c906108c | 5265 | |
c3f6f71d JM |
5266 | /* Parse ARG which is assumed to be a SAL specification possibly |
5267 | followed by conditionals. On return, SALS contains an array of SAL | |
5268 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5269 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5270 | |
b9362cc7 | 5271 | static void |
c3f6f71d JM |
5272 | parse_breakpoint_sals (char **address, |
5273 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5274 | char ***addr_string, |
5275 | int *not_found_ptr) | |
c3f6f71d JM |
5276 | { |
5277 | char *addr_start = *address; | |
5278 | *addr_string = NULL; | |
5279 | /* If no arg given, or if first arg is 'if ', use the default | |
5280 | breakpoint. */ | |
5281 | if ((*address) == NULL | |
5282 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5283 | { |
5284 | if (default_breakpoint_valid) | |
5285 | { | |
c3f6f71d | 5286 | struct symtab_and_line sal; |
fe39c653 | 5287 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5288 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5289 | xmalloc (sizeof (struct symtab_and_line)); |
5290 | sal.pc = default_breakpoint_address; | |
5291 | sal.line = default_breakpoint_line; | |
5292 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5293 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5294 | sals->sals[0] = sal; |
5295 | sals->nelts = 1; | |
c906108c SS |
5296 | } |
5297 | else | |
8a3fe4f8 | 5298 | error (_("No default breakpoint address now.")); |
c906108c SS |
5299 | } |
5300 | else | |
5301 | { | |
c906108c | 5302 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5303 | current_source_symtab (which is decode_line_1's default). This |
5304 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5305 | leaving default_breakpoint_* alone. |
5306 | ObjC: However, don't match an Objective-C method name which | |
5307 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5308 | |
c214a6fd | 5309 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5310 | |
c906108c | 5311 | if (default_breakpoint_valid |
0378c332 | 5312 | && (!cursal.symtab |
1aeae86e AF |
5313 | || ((strchr ("+-", (*address)[0]) != NULL) |
5314 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5315 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5316 | default_breakpoint_line, addr_string, |
5317 | not_found_ptr); | |
c906108c | 5318 | else |
0101ce28 JJ |
5319 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5320 | addr_string, not_found_ptr); | |
c906108c | 5321 | } |
c3f6f71d JM |
5322 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5323 | if (sals->nelts > 0 && *addr_string == NULL) | |
5324 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5325 | if (addr_start != (*address)) | |
c906108c | 5326 | { |
c3f6f71d JM |
5327 | int i; |
5328 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5329 | { |
c3f6f71d JM |
5330 | /* Add the string if not present. */ |
5331 | if ((*addr_string)[i] == NULL) | |
5332 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5333 | } |
5334 | } | |
c3f6f71d | 5335 | } |
c906108c | 5336 | |
c906108c | 5337 | |
c3f6f71d JM |
5338 | /* Convert each SAL into a real PC. Verify that the PC can be |
5339 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5340 | |
b9362cc7 | 5341 | static void |
c3f6f71d JM |
5342 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5343 | char *address) | |
5344 | { | |
5345 | int i; | |
5346 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5347 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5348 | } |
5349 | ||
05ff989b | 5350 | static void |
0101ce28 JJ |
5351 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5352 | { | |
5353 | struct captured_parse_breakpoint_args *args = data; | |
5354 | ||
5355 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5356 | args->not_found_ptr); | |
0101ce28 JJ |
5357 | } |
5358 | ||
018d34a4 VP |
5359 | /* Given TOK, a string specification of condition and thread, as |
5360 | accepted by the 'break' command, extract the condition | |
5361 | string and thread number and set *COND_STRING and *THREAD. | |
5362 | PC identifies the context at which the condition should be parsed. | |
5363 | If no condition is found, *COND_STRING is set to NULL. | |
5364 | If no thread is found, *THREAD is set to -1. */ | |
5365 | static void | |
5366 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
5367 | char **cond_string, int *thread) | |
5368 | { | |
5369 | *cond_string = NULL; | |
5370 | *thread = -1; | |
5371 | while (tok && *tok) | |
5372 | { | |
5373 | char *end_tok; | |
5374 | int toklen; | |
5375 | char *cond_start = NULL; | |
5376 | char *cond_end = NULL; | |
5377 | while (*tok == ' ' || *tok == '\t') | |
5378 | tok++; | |
5379 | ||
5380 | end_tok = tok; | |
5381 | ||
5382 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5383 | end_tok++; | |
5384 | ||
5385 | toklen = end_tok - tok; | |
5386 | ||
5387 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5388 | { | |
5389 | tok = cond_start = end_tok + 1; | |
5390 | parse_exp_1 (&tok, block_for_pc (pc), 0); | |
5391 | cond_end = tok; | |
5392 | *cond_string = savestring (cond_start, | |
5393 | cond_end - cond_start); | |
5394 | } | |
5395 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5396 | { | |
5397 | char *tmptok; | |
5398 | ||
5399 | tok = end_tok + 1; | |
5400 | tmptok = tok; | |
5401 | *thread = strtol (tok, &tok, 0); | |
5402 | if (tok == tmptok) | |
5403 | error (_("Junk after thread keyword.")); | |
5404 | if (!valid_thread_id (*thread)) | |
5405 | error (_("Unknown thread %d."), *thread); | |
5406 | } | |
5407 | else | |
5408 | error (_("Junk at end of arguments.")); | |
5409 | } | |
5410 | } | |
5411 | ||
72b2ff0e VP |
5412 | /* Set a breakpoint. This function is shared between |
5413 | CLI and MI functions for setting a breakpoint. | |
5414 | This function has two major modes of operations, | |
5415 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5416 | If non-zero, the function will parse arg, extracting | |
5417 | breakpoint location, address and thread. Otherwise, | |
5418 | ARG is just the location of breakpoint, with condition | |
5419 | and thread specified by the COND_STRING and THREAD | |
5420 | parameters. */ | |
0101ce28 | 5421 | |
98deb0da | 5422 | static void |
72b2ff0e | 5423 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 VP |
5424 | int parse_condition_and_thread, |
5425 | int tempflag, int hardwareflag, | |
5426 | int ignore_count, | |
5427 | enum auto_boolean pending_break_support, | |
5428 | int from_tty) | |
c3f6f71d | 5429 | { |
71fff37b | 5430 | struct gdb_exception e; |
c3f6f71d | 5431 | struct symtabs_and_lines sals; |
0101ce28 | 5432 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5433 | char *copy_arg; |
5434 | char *err_msg; | |
c3f6f71d JM |
5435 | char *addr_start = arg; |
5436 | char **addr_string; | |
5437 | struct cleanup *old_chain; | |
5438 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5439 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5440 | int i; |
0101ce28 | 5441 | int pending = 0; |
0101ce28 | 5442 | int not_found = 0; |
c3f6f71d | 5443 | |
c3f6f71d JM |
5444 | sals.sals = NULL; |
5445 | sals.nelts = 0; | |
5446 | addr_string = NULL; | |
c3f6f71d | 5447 | |
0101ce28 JJ |
5448 | parse_args.arg_p = &arg; |
5449 | parse_args.sals_p = &sals; | |
5450 | parse_args.addr_string_p = &addr_string; | |
5451 | parse_args.not_found_ptr = ¬_found; | |
5452 | ||
05ff989b AC |
5453 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5454 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5455 | |
5456 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5457 | switch (e.reason) |
0101ce28 | 5458 | { |
05ff989b | 5459 | case RETURN_QUIT: |
98deb0da | 5460 | throw_exception (e); |
05ff989b AC |
5461 | case RETURN_ERROR: |
5462 | switch (e.error) | |
0101ce28 | 5463 | { |
05ff989b | 5464 | case NOT_FOUND_ERROR: |
0101ce28 | 5465 | |
05ff989b AC |
5466 | /* If pending breakpoint support is turned off, throw |
5467 | error. */ | |
fa8d40ab JJ |
5468 | |
5469 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5470 | throw_exception (e); |
5471 | ||
5472 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5473 | |
05ff989b AC |
5474 | /* If pending breakpoint support is auto query and the user |
5475 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5476 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5477 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5478 | return; |
fa8d40ab | 5479 | |
05ff989b AC |
5480 | /* At this point, either the user was queried about setting |
5481 | a pending breakpoint and selected yes, or pending | |
5482 | breakpoint behavior is on and thus a pending breakpoint | |
5483 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5484 | copy_arg = xstrdup (addr_start); |
5485 | addr_string = ©_arg; | |
5486 | sals.nelts = 1; | |
5487 | sals.sals = &pending_sal; | |
5488 | pending_sal.pc = 0; | |
5489 | pending = 1; | |
05ff989b AC |
5490 | break; |
5491 | default: | |
98deb0da | 5492 | throw_exception (e); |
0101ce28 | 5493 | } |
05ff989b AC |
5494 | default: |
5495 | if (!sals.nelts) | |
98deb0da | 5496 | return; |
0101ce28 | 5497 | } |
c3f6f71d JM |
5498 | |
5499 | /* Create a chain of things that always need to be cleaned up. */ | |
5500 | old_chain = make_cleanup (null_cleanup, 0); | |
5501 | ||
0101ce28 JJ |
5502 | if (!pending) |
5503 | { | |
5504 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5505 | make_cleanup (xfree, sals.sals); | |
5506 | ||
5507 | /* Cleanup the addr_string array but not its contents. */ | |
5508 | make_cleanup (xfree, addr_string); | |
5509 | } | |
c3f6f71d | 5510 | |
c3f6f71d JM |
5511 | /* ----------------------------- SNIP ----------------------------- |
5512 | Anything added to the cleanup chain beyond this point is assumed | |
5513 | to be part of a breakpoint. If the breakpoint create succeeds | |
5514 | then the memory is not reclaimed. */ | |
5515 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5516 | ||
5517 | /* Mark the contents of the addr_string for cleanup. These go on | |
5518 | the breakpoint_chain and only occure if the breakpoint create | |
5519 | fails. */ | |
5520 | for (i = 0; i < sals.nelts; i++) | |
5521 | { | |
5522 | if (addr_string[i] != NULL) | |
b8c9b27d | 5523 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5524 | } |
5525 | ||
5526 | /* Resolve all line numbers to PC's and verify that the addresses | |
5527 | are ok for the target. */ | |
0101ce28 JJ |
5528 | if (!pending) |
5529 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5530 | |
5531 | /* Verify that condition can be parsed, before setting any | |
5532 | breakpoints. Allocate a separate condition expression for each | |
5533 | breakpoint. */ | |
0101ce28 | 5534 | if (!pending) |
c3f6f71d | 5535 | { |
72b2ff0e VP |
5536 | if (parse_condition_and_thread) |
5537 | { | |
5538 | /* Here we only parse 'arg' to separate condition | |
5539 | from thread number, so parsing in context of first | |
5540 | sal is OK. When setting the breakpoint we'll | |
5541 | re-parse it in context of each sal. */ | |
5542 | cond_string = NULL; | |
5543 | thread = -1; | |
5544 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, &thread); | |
5545 | if (cond_string) | |
5546 | make_cleanup (xfree, cond_string); | |
5547 | } | |
5548 | else | |
5549 | { | |
5550 | /* Create a private copy of condition string. */ | |
5551 | if (cond_string) | |
5552 | { | |
5553 | cond_string = xstrdup (cond_string); | |
5554 | make_cleanup (xfree, cond_string); | |
5555 | } | |
5556 | } | |
018d34a4 | 5557 | create_breakpoints (sals, addr_string, cond_string, |
0101ce28 JJ |
5558 | hardwareflag ? bp_hardware_breakpoint |
5559 | : bp_breakpoint, | |
5560 | tempflag ? disp_del : disp_donttouch, | |
db107f19 | 5561 | thread, ignore_count, from_tty); |
c906108c | 5562 | } |
0101ce28 JJ |
5563 | else |
5564 | { | |
fe3f5fa8 | 5565 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5566 | struct breakpoint *b; |
5567 | ||
0101ce28 JJ |
5568 | make_cleanup (xfree, copy_arg); |
5569 | ||
0d381245 VP |
5570 | b = set_raw_breakpoint_without_location (hardwareflag |
5571 | ? bp_hardware_breakpoint | |
5572 | : bp_breakpoint); | |
0101ce28 JJ |
5573 | set_breakpoint_count (breakpoint_count + 1); |
5574 | b->number = breakpoint_count; | |
72b2ff0e | 5575 | b->thread = -1; |
018d34a4 | 5576 | b->addr_string = addr_string[0]; |
72b2ff0e | 5577 | b->cond_string = NULL; |
0101ce28 | 5578 | b->ignore_count = ignore_count; |
0101ce28 | 5579 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5580 | b->condition_not_parsed = 1; |
74960c60 VP |
5581 | |
5582 | update_global_location_list (); | |
0101ce28 JJ |
5583 | mention (b); |
5584 | } | |
5585 | ||
c3f6f71d | 5586 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5587 | warning (_("Multiple breakpoints were set.\n" |
5588 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5589 | /* That's it. Discard the cleanups for data inserted into the |
5590 | breakpoint. */ | |
5591 | discard_cleanups (breakpoint_chain); | |
5592 | /* But cleanup everything else. */ | |
5593 | do_cleanups (old_chain); | |
5594 | } | |
c906108c | 5595 | |
72b2ff0e VP |
5596 | /* Set a breakpoint. |
5597 | ARG is a string describing breakpoint address, | |
5598 | condition, and thread. | |
5599 | FLAG specifies if a breakpoint is hardware on, | |
5600 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5601 | and BP_TEMPFLAG. */ | |
5602 | ||
98deb0da | 5603 | static void |
72b2ff0e | 5604 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5605 | { |
72b2ff0e VP |
5606 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5607 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5608 | |
98deb0da VP |
5609 | break_command_really (arg, |
5610 | NULL, 0, 1 /* parse arg */, | |
5611 | tempflag, hardwareflag, | |
5612 | 0 /* Ignore count */, | |
5613 | pending_break_support, from_tty); | |
c906108c SS |
5614 | } |
5615 | ||
72b2ff0e | 5616 | |
98deb0da VP |
5617 | void |
5618 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5619 | int hardwareflag, int tempflag, |
ce43223b | 5620 | int thread, int ignore_count, |
98deb0da | 5621 | int pending) |
c3f6f71d | 5622 | { |
98deb0da VP |
5623 | break_command_really (address, condition, thread, |
5624 | 0 /* condition and thread are valid. */, | |
5625 | tempflag, hardwareflag, | |
5626 | ignore_count, | |
5627 | pending | |
5628 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
5629 | 0); | |
c3f6f71d JM |
5630 | } |
5631 | ||
6a048695 JB |
5632 | /* Adjust SAL to the first instruction past the function prologue. |
5633 | The end of the prologue is determined using the line table from | |
5634 | the debugging information. | |
5635 | ||
5636 | If SAL is already past the prologue, then do nothing. */ | |
5637 | ||
5638 | static void | |
5639 | skip_prologue_sal (struct symtab_and_line *sal) | |
5640 | { | |
5641 | struct symbol *sym = find_pc_function (sal->pc); | |
5642 | struct symtab_and_line start_sal; | |
5643 | ||
5644 | if (sym == NULL) | |
5645 | return; | |
5646 | ||
5647 | start_sal = find_function_start_sal (sym, 1); | |
5648 | if (sal->pc < start_sal.pc) | |
5649 | *sal = start_sal; | |
5650 | } | |
c3f6f71d | 5651 | |
c906108c SS |
5652 | /* Helper function for break_command_1 and disassemble_command. */ |
5653 | ||
5654 | void | |
fba45db2 | 5655 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5656 | { |
5657 | CORE_ADDR pc; | |
5658 | ||
5659 | if (sal->pc == 0 && sal->symtab != NULL) | |
5660 | { | |
5661 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5662 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5663 | sal->line, sal->symtab->filename); |
5664 | sal->pc = pc; | |
6a048695 JB |
5665 | |
5666 | /* If this SAL corresponds to a breakpoint inserted using | |
5667 | a line number, then skip the function prologue if necessary. */ | |
5668 | if (sal->explicit_line) | |
5669 | skip_prologue_sal (sal); | |
c906108c SS |
5670 | } |
5671 | ||
5672 | if (sal->section == 0 && sal->symtab != NULL) | |
5673 | { | |
5674 | struct blockvector *bv; | |
c5aa993b JM |
5675 | struct block *b; |
5676 | struct symbol *sym; | |
c906108c | 5677 | |
801e3a5b | 5678 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5679 | if (bv != NULL) |
5680 | { | |
c906108c SS |
5681 | sym = block_function (b); |
5682 | if (sym != NULL) | |
5683 | { | |
5684 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5685 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5686 | } | |
5687 | else | |
5688 | { | |
5689 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5690 | have to look harder. This case can be executed if we have |
5691 | line numbers but no functions (as can happen in assembly | |
5692 | source). */ | |
c906108c | 5693 | |
c5aa993b | 5694 | struct minimal_symbol *msym; |
c906108c SS |
5695 | |
5696 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5697 | if (msym) | |
5698 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5699 | } | |
5700 | } | |
5701 | } | |
5702 | } | |
5703 | ||
5704 | void | |
fba45db2 | 5705 | break_command (char *arg, int from_tty) |
c906108c | 5706 | { |
db107f19 | 5707 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5708 | } |
5709 | ||
c906108c | 5710 | void |
fba45db2 | 5711 | tbreak_command (char *arg, int from_tty) |
c906108c | 5712 | { |
db107f19 | 5713 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
5714 | } |
5715 | ||
c906108c | 5716 | static void |
fba45db2 | 5717 | hbreak_command (char *arg, int from_tty) |
c906108c | 5718 | { |
db107f19 | 5719 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
5720 | } |
5721 | ||
5722 | static void | |
fba45db2 | 5723 | thbreak_command (char *arg, int from_tty) |
c906108c | 5724 | { |
db107f19 | 5725 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
5726 | } |
5727 | ||
5728 | static void | |
fba45db2 | 5729 | stop_command (char *arg, int from_tty) |
c906108c | 5730 | { |
a3f17187 | 5731 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5732 | Usage: stop in <function | address>\n\ |
a3f17187 | 5733 | stop at <line>\n")); |
c906108c SS |
5734 | } |
5735 | ||
5736 | static void | |
fba45db2 | 5737 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5738 | { |
5739 | int badInput = 0; | |
5740 | ||
c5aa993b | 5741 | if (arg == (char *) NULL) |
c906108c SS |
5742 | badInput = 1; |
5743 | else if (*arg != '*') | |
5744 | { | |
5745 | char *argptr = arg; | |
5746 | int hasColon = 0; | |
5747 | ||
53a5351d JM |
5748 | /* look for a ':'. If this is a line number specification, then |
5749 | say it is bad, otherwise, it should be an address or | |
5750 | function/method name */ | |
c906108c | 5751 | while (*argptr && !hasColon) |
c5aa993b JM |
5752 | { |
5753 | hasColon = (*argptr == ':'); | |
5754 | argptr++; | |
5755 | } | |
c906108c SS |
5756 | |
5757 | if (hasColon) | |
c5aa993b | 5758 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5759 | else |
c5aa993b | 5760 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5761 | } |
5762 | ||
5763 | if (badInput) | |
a3f17187 | 5764 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5765 | else |
db107f19 | 5766 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5767 | } |
5768 | ||
5769 | static void | |
fba45db2 | 5770 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5771 | { |
5772 | int badInput = 0; | |
5773 | ||
c5aa993b | 5774 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5775 | badInput = 1; |
5776 | else | |
5777 | { | |
5778 | char *argptr = arg; | |
5779 | int hasColon = 0; | |
5780 | ||
5781 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5782 | it is probably a line number. */ |
c906108c | 5783 | while (*argptr && !hasColon) |
c5aa993b JM |
5784 | { |
5785 | hasColon = (*argptr == ':'); | |
5786 | argptr++; | |
5787 | } | |
c906108c SS |
5788 | |
5789 | if (hasColon) | |
c5aa993b | 5790 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5791 | else |
c5aa993b | 5792 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5793 | } |
5794 | ||
5795 | if (badInput) | |
a3f17187 | 5796 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5797 | else |
db107f19 | 5798 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5799 | } |
5800 | ||
53a5351d JM |
5801 | /* accessflag: hw_write: watch write, |
5802 | hw_read: watch read, | |
5803 | hw_access: watch access (read or write) */ | |
c906108c | 5804 | static void |
fba45db2 | 5805 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 5806 | { |
d983da9c | 5807 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
5808 | struct symtab_and_line sal; |
5809 | struct expression *exp; | |
5810 | struct block *exp_valid_block; | |
5811 | struct value *val, *mark; | |
5812 | struct frame_info *frame; | |
5813 | struct frame_info *prev_frame = NULL; | |
5814 | char *exp_start = NULL; | |
5815 | char *exp_end = NULL; | |
37e4754d | 5816 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
5817 | int toklen; |
5818 | char *cond_start = NULL; | |
5819 | char *cond_end = NULL; | |
5820 | struct expression *cond = NULL; | |
5821 | int i, other_type_used, target_resources_ok = 0; | |
5822 | enum bptype bp_type; | |
5823 | int mem_cnt = 0; | |
37e4754d | 5824 | int thread = -1; |
c906108c | 5825 | |
fe39c653 | 5826 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5827 | |
37e4754d LM |
5828 | /* Make sure that we actually have parameters to parse. */ |
5829 | if (arg != NULL && arg[0] != '\0') | |
5830 | { | |
5831 | toklen = strlen (arg); /* Size of argument list. */ | |
5832 | ||
5833 | /* Points tok to the end of the argument list. */ | |
5834 | tok = arg + toklen - 1; | |
5835 | ||
5836 | /* Go backwards in the parameters list. Skip the last parameter. | |
5837 | If we're expecting a 'thread <thread_num>' parameter, this should | |
5838 | be the thread identifier. */ | |
5839 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5840 | tok--; | |
5841 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5842 | tok--; | |
5843 | ||
5844 | /* Points end_tok to the beginning of the last token. */ | |
5845 | id_tok_start = tok + 1; | |
5846 | ||
5847 | /* Go backwards in the parameters list. Skip one more parameter. | |
5848 | If we're expecting a 'thread <thread_num>' parameter, we should | |
5849 | reach a "thread" token. */ | |
5850 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5851 | tok--; | |
5852 | ||
5853 | end_tok = tok; | |
5854 | ||
5855 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5856 | tok--; | |
5857 | ||
5858 | /* Move the pointer forward to skip the whitespace and | |
5859 | calculate the length of the token. */ | |
5860 | tok++; | |
5861 | toklen = end_tok - tok; | |
5862 | ||
5863 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5864 | { | |
5865 | /* At this point we've found a "thread" token, which means | |
5866 | the user is trying to set a watchpoint that triggers | |
5867 | only in a specific thread. */ | |
5868 | char *endp; | |
5869 | ||
5870 | /* Extract the thread ID from the next token. */ | |
5871 | thread = strtol (id_tok_start, &endp, 0); | |
5872 | ||
5873 | /* Check if the user provided a valid numeric value for the | |
5874 | thread ID. */ | |
5875 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
5876 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
5877 | ||
5878 | /* Check if the thread actually exists. */ | |
5879 | if (!valid_thread_id (thread)) | |
5880 | error (_("Unknown thread %d."), thread); | |
5881 | ||
5882 | /* Truncate the string and get rid of the thread <thread_num> | |
5883 | parameter before the parameter list is parsed by the | |
5884 | evaluate_expression() function. */ | |
5885 | *tok = '\0'; | |
5886 | } | |
5887 | } | |
5888 | ||
5889 | /* Parse the rest of the arguments. */ | |
c906108c SS |
5890 | innermost_block = NULL; |
5891 | exp_start = arg; | |
5892 | exp = parse_exp_1 (&arg, 0, 0); | |
5893 | exp_end = arg; | |
5894 | exp_valid_block = innermost_block; | |
5895 | mark = value_mark (); | |
fa4727a6 DJ |
5896 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
5897 | if (val != NULL) | |
5898 | release_value (val); | |
c906108c SS |
5899 | |
5900 | tok = arg; | |
5901 | while (*tok == ' ' || *tok == '\t') | |
5902 | tok++; | |
5903 | end_tok = tok; | |
5904 | ||
5905 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5906 | end_tok++; | |
5907 | ||
5908 | toklen = end_tok - tok; | |
5909 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5910 | { | |
5911 | tok = cond_start = end_tok + 1; | |
5912 | cond = parse_exp_1 (&tok, 0, 0); | |
5913 | cond_end = tok; | |
5914 | } | |
5915 | if (*tok) | |
8a3fe4f8 | 5916 | error (_("Junk at end of command.")); |
c906108c | 5917 | |
53a5351d | 5918 | if (accessflag == hw_read) |
c5aa993b | 5919 | bp_type = bp_read_watchpoint; |
53a5351d | 5920 | else if (accessflag == hw_access) |
c5aa993b JM |
5921 | bp_type = bp_access_watchpoint; |
5922 | else | |
5923 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5924 | |
5925 | mem_cnt = can_use_hardware_watchpoint (val); | |
5926 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 5927 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
5928 | if (mem_cnt != 0) |
5929 | { | |
5930 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5931 | target_resources_ok = |
5932 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5933 | other_type_used); | |
c5aa993b | 5934 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5935 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 5936 | |
c5aa993b | 5937 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5938 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 5939 | } |
c906108c | 5940 | |
4d28f7a8 KB |
5941 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5942 | watchpoint could not be set. */ | |
5943 | if (!mem_cnt || target_resources_ok <= 0) | |
5944 | bp_type = bp_watchpoint; | |
5945 | ||
d983da9c DJ |
5946 | frame = block_innermost_frame (exp_valid_block); |
5947 | if (frame) | |
5948 | prev_frame = get_prev_frame (frame); | |
5949 | else | |
5950 | prev_frame = NULL; | |
5951 | ||
5952 | /* If the expression is "local", then set up a "watchpoint scope" | |
5953 | breakpoint at the point where we've left the scope of the watchpoint | |
5954 | expression. Create the scope breakpoint before the watchpoint, so | |
5955 | that we will encounter it first in bpstat_stop_status. */ | |
5956 | if (innermost_block && prev_frame) | |
5957 | { | |
5958 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
5959 | bp_watchpoint_scope); | |
5960 | ||
5961 | scope_breakpoint->enable_state = bp_enabled; | |
5962 | ||
5963 | /* Automatically delete the breakpoint when it hits. */ | |
5964 | scope_breakpoint->disposition = disp_del; | |
5965 | ||
5966 | /* Only break in the proper frame (help with recursion). */ | |
5967 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
5968 | ||
5969 | /* Set the address at which we will stop. */ | |
5970 | scope_breakpoint->loc->requested_address | |
5971 | = get_frame_pc (prev_frame); | |
5972 | scope_breakpoint->loc->address | |
5973 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
5974 | scope_breakpoint->type); | |
5975 | } | |
5976 | ||
c906108c | 5977 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5978 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5979 | set_breakpoint_count (breakpoint_count + 1); |
5980 | b->number = breakpoint_count; | |
37e4754d | 5981 | b->thread = thread; |
b5de0fa7 | 5982 | b->disposition = disp_donttouch; |
c906108c SS |
5983 | b->exp = exp; |
5984 | b->exp_valid_block = exp_valid_block; | |
5985 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5986 | b->val = val; | |
fa4727a6 | 5987 | b->val_valid = 1; |
511a6cd4 | 5988 | b->loc->cond = cond; |
c906108c SS |
5989 | if (cond_start) |
5990 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5991 | else | |
5992 | b->cond_string = 0; | |
c5aa993b | 5993 | |
c906108c | 5994 | if (frame) |
d983da9c | 5995 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 5996 | else |
35a487f1 | 5997 | b->watchpoint_frame = null_frame_id; |
c906108c | 5998 | |
d983da9c | 5999 | if (scope_breakpoint != NULL) |
c906108c | 6000 | { |
d983da9c DJ |
6001 | /* The scope breakpoint is related to the watchpoint. We will |
6002 | need to act on them together. */ | |
6003 | b->related_breakpoint = scope_breakpoint; | |
6004 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6005 | } |
d983da9c | 6006 | |
c906108c SS |
6007 | value_free_to_mark (mark); |
6008 | mention (b); | |
74960c60 | 6009 | update_global_location_list (); |
c906108c SS |
6010 | } |
6011 | ||
6012 | /* Return count of locations need to be watched and can be handled | |
6013 | in hardware. If the watchpoint can not be handled | |
6014 | in hardware return zero. */ | |
6015 | ||
c906108c | 6016 | static int |
fba45db2 | 6017 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6018 | { |
6019 | int found_memory_cnt = 0; | |
2e70b7b9 | 6020 | struct value *head = v; |
c906108c SS |
6021 | |
6022 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6023 | if (!can_use_hw_watchpoints) |
c906108c | 6024 | return 0; |
c5aa993b | 6025 | |
5c44784c JM |
6026 | /* Make sure that the value of the expression depends only upon |
6027 | memory contents, and values computed from them within GDB. If we | |
6028 | find any register references or function calls, we can't use a | |
6029 | hardware watchpoint. | |
6030 | ||
6031 | The idea here is that evaluating an expression generates a series | |
6032 | of values, one holding the value of every subexpression. (The | |
6033 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6034 | a*b+c.) GDB's values hold almost enough information to establish | |
6035 | the criteria given above --- they identify memory lvalues, | |
6036 | register lvalues, computed values, etcetera. So we can evaluate | |
6037 | the expression, and then scan the chain of values that leaves | |
6038 | behind to decide whether we can detect any possible change to the | |
6039 | expression's final value using only hardware watchpoints. | |
6040 | ||
6041 | However, I don't think that the values returned by inferior | |
6042 | function calls are special in any way. So this function may not | |
6043 | notice that an expression involving an inferior function call | |
6044 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6045 | for (; v; v = value_next (v)) |
c906108c | 6046 | { |
5c44784c | 6047 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6048 | { |
d69fe07e | 6049 | if (value_lazy (v)) |
5c44784c JM |
6050 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6051 | we either just used its address (e.g., `a' in `a.b') or | |
6052 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6053 | ; | |
53a5351d | 6054 | else |
5c44784c JM |
6055 | { |
6056 | /* Ahh, memory we actually used! Check if we can cover | |
6057 | it with hardware watchpoints. */ | |
df407dfe | 6058 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6059 | |
6060 | /* We only watch structs and arrays if user asked for it | |
6061 | explicitly, never if they just happen to appear in a | |
6062 | middle of some value chain. */ | |
6063 | if (v == head | |
6064 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6065 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6066 | { | |
df407dfe AC |
6067 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
6068 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
6069 | |
6070 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
6071 | return 0; | |
6072 | else | |
6073 | found_memory_cnt++; | |
6074 | } | |
5c44784c | 6075 | } |
c5aa993b | 6076 | } |
5086187c AC |
6077 | else if (VALUE_LVAL (v) != not_lval |
6078 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6079 | return 0; /* ??? What does this represent? */ |
5086187c | 6080 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6081 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6082 | } |
6083 | ||
6084 | /* The expression itself looks suitable for using a hardware | |
6085 | watchpoint, but give the target machine a chance to reject it. */ | |
6086 | return found_memory_cnt; | |
6087 | } | |
6088 | ||
8b93c638 | 6089 | void |
fba45db2 | 6090 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6091 | { |
6092 | watch_command (arg, from_tty); | |
6093 | } | |
8926118c | 6094 | |
c5aa993b | 6095 | static void |
fba45db2 | 6096 | watch_command (char *arg, int from_tty) |
c906108c | 6097 | { |
53a5351d | 6098 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6099 | } |
6100 | ||
8b93c638 | 6101 | void |
fba45db2 | 6102 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6103 | { |
6104 | rwatch_command (arg, from_tty); | |
6105 | } | |
8926118c | 6106 | |
c5aa993b | 6107 | static void |
fba45db2 | 6108 | rwatch_command (char *arg, int from_tty) |
c906108c | 6109 | { |
53a5351d | 6110 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6111 | } |
6112 | ||
8b93c638 | 6113 | void |
fba45db2 | 6114 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6115 | { |
6116 | awatch_command (arg, from_tty); | |
6117 | } | |
8926118c | 6118 | |
c5aa993b | 6119 | static void |
fba45db2 | 6120 | awatch_command (char *arg, int from_tty) |
c906108c | 6121 | { |
53a5351d | 6122 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6123 | } |
c906108c | 6124 | \f |
c5aa993b | 6125 | |
43ff13b4 | 6126 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6127 | because it uses the mechanisms of breakpoints. */ |
6128 | ||
43ff13b4 JM |
6129 | /* This function is called by fetch_inferior_event via the |
6130 | cmd_continuation pointer, to complete the until command. It takes | |
6131 | care of cleaning up the temporary breakpoints set up by the until | |
6132 | command. */ | |
c2c6d25f | 6133 | static void |
f107f563 | 6134 | until_break_command_continuation (struct continuation_arg *arg, int error) |
43ff13b4 | 6135 | { |
f107f563 VP |
6136 | delete_breakpoint ((struct breakpoint *)(arg->data.pointer)); |
6137 | if (arg->next) | |
6138 | delete_breakpoint ((struct breakpoint *)(arg->next->data.pointer)); | |
43ff13b4 JM |
6139 | } |
6140 | ||
c906108c | 6141 | void |
ae66c1fc | 6142 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6143 | { |
6144 | struct symtabs_and_lines sals; | |
6145 | struct symtab_and_line sal; | |
206415a3 DJ |
6146 | struct frame_info *frame = get_selected_frame (NULL); |
6147 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6148 | struct breakpoint *breakpoint; |
f107f563 | 6149 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 6150 | struct cleanup *old_chain; |
0d06e24b | 6151 | struct continuation_arg *arg1; |
f107f563 | 6152 | struct continuation_arg *arg2; |
0d06e24b | 6153 | |
c906108c SS |
6154 | |
6155 | clear_proceed_status (); | |
6156 | ||
6157 | /* Set a breakpoint where the user wants it and at return from | |
6158 | this function */ | |
c5aa993b | 6159 | |
c906108c SS |
6160 | if (default_breakpoint_valid) |
6161 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6162 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6163 | else |
53a5351d | 6164 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6165 | 0, (char ***) NULL, NULL); |
c5aa993b | 6166 | |
c906108c | 6167 | if (sals.nelts != 1) |
8a3fe4f8 | 6168 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6169 | |
c906108c | 6170 | sal = sals.sals[0]; |
b8c9b27d | 6171 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6172 | |
c906108c | 6173 | if (*arg) |
8a3fe4f8 | 6174 | error (_("Junk at end of arguments.")); |
c5aa993b | 6175 | |
c906108c | 6176 | resolve_sal_pc (&sal); |
c5aa993b | 6177 | |
ae66c1fc EZ |
6178 | if (anywhere) |
6179 | /* If the user told us to continue until a specified location, | |
6180 | we don't specify a frame at which we need to stop. */ | |
6181 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6182 | else | |
6183 | /* Otherwise, specify the current frame, because we want to stop only | |
6184 | at the very same frame. */ | |
206415a3 | 6185 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6186 | bp_until); |
c5aa993b | 6187 | |
f107f563 | 6188 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6189 | |
ae66c1fc EZ |
6190 | /* Keep within the current frame, or in frames called by the current |
6191 | one. */ | |
c906108c SS |
6192 | if (prev_frame) |
6193 | { | |
30f7db39 AC |
6194 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6195 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6196 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6197 | bp_until); | |
6198 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6199 | } |
c5aa993b | 6200 | |
c906108c | 6201 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6202 | |
6203 | /* If we are running asynchronously, and proceed call above has actually | |
6204 | managed to start the target, arrange for breakpoints to be | |
6205 | deleted when the target stops. Otherwise, we're already stopped and | |
6206 | delete breakpoints via cleanup chain. */ | |
6207 | ||
6208 | if (target_can_async_p () && target_executing) | |
6209 | { | |
6210 | arg1 = | |
6211 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
6212 | arg1->next = NULL; | |
6213 | arg1->data.pointer = breakpoint; | |
6214 | ||
6215 | if (breakpoint2) | |
6216 | { | |
6217 | arg2 = (struct continuation_arg *) | |
6218 | xmalloc ( sizeof (struct continuation_arg)); | |
6219 | arg2->next = NULL; | |
6220 | arg2->data.pointer = breakpoint2; | |
6221 | arg1->next = arg2; | |
6222 | } | |
6223 | ||
6224 | discard_cleanups (old_chain); | |
6225 | add_continuation (until_break_command_continuation, arg1); | |
6226 | } | |
6227 | else | |
c5aa993b | 6228 | do_cleanups (old_chain); |
c906108c | 6229 | } |
ae66c1fc | 6230 | |
c906108c | 6231 | static void |
fba45db2 | 6232 | ep_skip_leading_whitespace (char **s) |
c906108c | 6233 | { |
c5aa993b JM |
6234 | if ((s == NULL) || (*s == NULL)) |
6235 | return; | |
6236 | while (isspace (**s)) | |
6237 | *s += 1; | |
c906108c | 6238 | } |
c5aa993b | 6239 | |
c906108c SS |
6240 | /* This function examines a string, and attempts to find a token |
6241 | that might be an event name in the leading characters. If a | |
6242 | possible match is found, a pointer to the last character of | |
6243 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6244 | |
c906108c | 6245 | static char * |
fba45db2 | 6246 | ep_find_event_name_end (char *arg) |
c906108c | 6247 | { |
c5aa993b JM |
6248 | char *s = arg; |
6249 | char *event_name_end = NULL; | |
6250 | ||
c906108c SS |
6251 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6252 | if (arg == NULL) | |
6253 | return NULL; | |
c5aa993b | 6254 | |
c906108c | 6255 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6256 | Basically, we're looking for alphanumerics and underscores; |
6257 | anything else delimites the token. */ | |
c906108c SS |
6258 | while (*s != '\0') |
6259 | { | |
c5aa993b JM |
6260 | if (!isalnum (*s) && (*s != '_')) |
6261 | break; | |
c906108c SS |
6262 | event_name_end = s; |
6263 | s++; | |
6264 | } | |
c5aa993b | 6265 | |
c906108c SS |
6266 | return event_name_end; |
6267 | } | |
6268 | ||
c5aa993b | 6269 | |
c906108c SS |
6270 | /* This function attempts to parse an optional "if <cond>" clause |
6271 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6272 | |
c906108c SS |
6273 | Else, it returns a pointer to the condition string. (It does not |
6274 | attempt to evaluate the string against a particular block.) And, | |
6275 | it updates arg to point to the first character following the parsed | |
6276 | if clause in the arg string. */ | |
53a5351d | 6277 | |
c906108c | 6278 | static char * |
fba45db2 | 6279 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6280 | { |
c5aa993b JM |
6281 | char *cond_string; |
6282 | ||
6283 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6284 | return NULL; |
c5aa993b | 6285 | |
c906108c SS |
6286 | /* Skip the "if" keyword. */ |
6287 | (*arg) += 2; | |
c5aa993b | 6288 | |
c906108c SS |
6289 | /* Skip any extra leading whitespace, and record the start of the |
6290 | condition string. */ | |
6291 | ep_skip_leading_whitespace (arg); | |
6292 | cond_string = *arg; | |
c5aa993b | 6293 | |
c906108c SS |
6294 | /* Assume that the condition occupies the remainder of the arg string. */ |
6295 | (*arg) += strlen (cond_string); | |
c5aa993b | 6296 | |
c906108c SS |
6297 | return cond_string; |
6298 | } | |
c5aa993b | 6299 | |
c906108c SS |
6300 | /* This function attempts to parse an optional filename from the arg |
6301 | string. If one is not found, it returns NULL. | |
c5aa993b | 6302 | |
c906108c SS |
6303 | Else, it returns a pointer to the parsed filename. (This function |
6304 | makes no attempt to verify that a file of that name exists, or is | |
6305 | accessible.) And, it updates arg to point to the first character | |
6306 | following the parsed filename in the arg string. | |
c5aa993b | 6307 | |
c906108c SS |
6308 | Note that clients needing to preserve the returned filename for |
6309 | future access should copy it to their own buffers. */ | |
6310 | static char * | |
fba45db2 | 6311 | ep_parse_optional_filename (char **arg) |
c906108c | 6312 | { |
c5aa993b JM |
6313 | static char filename[1024]; |
6314 | char *arg_p = *arg; | |
6315 | int i; | |
6316 | char c; | |
6317 | ||
c906108c SS |
6318 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6319 | return NULL; | |
c5aa993b JM |
6320 | |
6321 | for (i = 0;; i++) | |
c906108c SS |
6322 | { |
6323 | c = *arg_p; | |
6324 | if (isspace (c)) | |
c5aa993b | 6325 | c = '\0'; |
c906108c SS |
6326 | filename[i] = c; |
6327 | if (c == '\0') | |
c5aa993b | 6328 | break; |
c906108c SS |
6329 | arg_p++; |
6330 | } | |
6331 | *arg = arg_p; | |
c5aa993b | 6332 | |
c906108c SS |
6333 | return filename; |
6334 | } | |
c5aa993b | 6335 | |
c906108c SS |
6336 | /* Commands to deal with catching events, such as signals, exceptions, |
6337 | process start/exit, etc. */ | |
c5aa993b JM |
6338 | |
6339 | typedef enum | |
6340 | { | |
6341 | catch_fork, catch_vfork | |
6342 | } | |
6343 | catch_fork_kind; | |
6344 | ||
c906108c | 6345 | static void |
fba45db2 KB |
6346 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6347 | int from_tty) | |
c906108c | 6348 | { |
c5aa993b JM |
6349 | char *cond_string = NULL; |
6350 | ||
c906108c | 6351 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6352 | |
c906108c | 6353 | /* The allowed syntax is: |
c5aa993b JM |
6354 | catch [v]fork |
6355 | catch [v]fork if <cond> | |
6356 | ||
c906108c SS |
6357 | First, check if there's an if clause. */ |
6358 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6359 | |
c906108c | 6360 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6361 | error (_("Junk at end of arguments.")); |
c5aa993b | 6362 | |
c906108c SS |
6363 | /* If this target supports it, create a fork or vfork catchpoint |
6364 | and enable reporting of such events. */ | |
c5aa993b JM |
6365 | switch (fork_kind) |
6366 | { | |
6367 | case catch_fork: | |
c906108c SS |
6368 | create_fork_event_catchpoint (tempflag, cond_string); |
6369 | break; | |
c5aa993b | 6370 | case catch_vfork: |
c906108c SS |
6371 | create_vfork_event_catchpoint (tempflag, cond_string); |
6372 | break; | |
c5aa993b | 6373 | default: |
8a3fe4f8 | 6374 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6375 | break; |
c5aa993b | 6376 | } |
c906108c SS |
6377 | } |
6378 | ||
6379 | static void | |
fba45db2 | 6380 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6381 | { |
c5aa993b | 6382 | char *cond_string = NULL; |
c906108c SS |
6383 | |
6384 | ep_skip_leading_whitespace (&arg); | |
6385 | ||
6386 | /* The allowed syntax is: | |
c5aa993b JM |
6387 | catch exec |
6388 | catch exec if <cond> | |
c906108c SS |
6389 | |
6390 | First, check if there's an if clause. */ | |
6391 | cond_string = ep_parse_optional_if_clause (&arg); | |
6392 | ||
6393 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6394 | error (_("Junk at end of arguments.")); |
c906108c SS |
6395 | |
6396 | /* If this target supports it, create an exec catchpoint | |
6397 | and enable reporting of such events. */ | |
6398 | create_exec_event_catchpoint (tempflag, cond_string); | |
6399 | } | |
c5aa993b | 6400 | |
c906108c | 6401 | static void |
fba45db2 | 6402 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6403 | { |
c5aa993b JM |
6404 | char *dll_pathname = NULL; |
6405 | char *cond_string = NULL; | |
6406 | ||
c906108c | 6407 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6408 | |
c906108c | 6409 | /* The allowed syntax is: |
c5aa993b JM |
6410 | catch load |
6411 | catch load if <cond> | |
6412 | catch load <filename> | |
6413 | catch load <filename> if <cond> | |
6414 | ||
c906108c SS |
6415 | The user is not allowed to specify the <filename> after an |
6416 | if clause. | |
c5aa993b | 6417 | |
c906108c | 6418 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6419 | |
c906108c SS |
6420 | First, check if there's an if clause. If so, then there |
6421 | cannot be a filename. */ | |
6422 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6423 | |
c906108c SS |
6424 | /* If there was an if clause, then there cannot be a filename. |
6425 | Else, there might be a filename and an if clause. */ | |
6426 | if (cond_string == NULL) | |
6427 | { | |
6428 | dll_pathname = ep_parse_optional_filename (&arg); | |
6429 | ep_skip_leading_whitespace (&arg); | |
6430 | cond_string = ep_parse_optional_if_clause (&arg); | |
6431 | } | |
c5aa993b | 6432 | |
c906108c | 6433 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6434 | error (_("Junk at end of arguments.")); |
c5aa993b | 6435 | |
c906108c SS |
6436 | /* Create a load breakpoint that only triggers when a load of |
6437 | the specified dll (or any dll, if no pathname was specified) | |
6438 | occurs. */ | |
39f77062 | 6439 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6440 | dll_pathname, cond_string); |
c906108c | 6441 | } |
c5aa993b | 6442 | |
c906108c | 6443 | static void |
fba45db2 | 6444 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6445 | { |
c5aa993b JM |
6446 | char *dll_pathname = NULL; |
6447 | char *cond_string = NULL; | |
6448 | ||
c906108c | 6449 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6450 | |
c906108c | 6451 | /* The allowed syntax is: |
c5aa993b JM |
6452 | catch unload |
6453 | catch unload if <cond> | |
6454 | catch unload <filename> | |
6455 | catch unload <filename> if <cond> | |
6456 | ||
c906108c SS |
6457 | The user is not allowed to specify the <filename> after an |
6458 | if clause. | |
c5aa993b | 6459 | |
c906108c | 6460 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6461 | |
c906108c SS |
6462 | First, check if there's an if clause. If so, then there |
6463 | cannot be a filename. */ | |
6464 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6465 | |
c906108c SS |
6466 | /* If there was an if clause, then there cannot be a filename. |
6467 | Else, there might be a filename and an if clause. */ | |
6468 | if (cond_string == NULL) | |
6469 | { | |
6470 | dll_pathname = ep_parse_optional_filename (&arg); | |
6471 | ep_skip_leading_whitespace (&arg); | |
6472 | cond_string = ep_parse_optional_if_clause (&arg); | |
6473 | } | |
c5aa993b | 6474 | |
c906108c | 6475 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6476 | error (_("Junk at end of arguments.")); |
c5aa993b | 6477 | |
c906108c SS |
6478 | /* Create an unload breakpoint that only triggers when an unload of |
6479 | the specified dll (or any dll, if no pathname was specified) | |
6480 | occurs. */ | |
39f77062 | 6481 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6482 | dll_pathname, cond_string); |
c906108c | 6483 | } |
c906108c | 6484 | |
3086aeae DJ |
6485 | static enum print_stop_action |
6486 | print_exception_catchpoint (struct breakpoint *b) | |
6487 | { | |
6488 | annotate_catchpoint (b->number); | |
6489 | ||
6490 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6491 | printf_filtered (_("\nCatchpoint %d (exception thrown)\n"), |
3086aeae DJ |
6492 | b->number); |
6493 | else | |
a3f17187 | 6494 | printf_filtered (_("\nCatchpoint %d (exception caught)\n"), |
3086aeae DJ |
6495 | b->number); |
6496 | ||
6497 | return PRINT_SRC_AND_LOC; | |
6498 | } | |
6499 | ||
6500 | static void | |
6501 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6502 | { | |
6503 | if (addressprint) | |
6504 | { | |
6505 | annotate_field (4); | |
5cab636d | 6506 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6507 | } |
6508 | annotate_field (5); | |
5cab636d | 6509 | *last_addr = b->loc->address; |
3086aeae DJ |
6510 | if (strstr (b->addr_string, "throw") != NULL) |
6511 | ui_out_field_string (uiout, "what", "exception throw"); | |
6512 | else | |
6513 | ui_out_field_string (uiout, "what", "exception catch"); | |
6514 | } | |
6515 | ||
6516 | static void | |
6517 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6518 | { | |
6519 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6520 | printf_filtered (_("Catchpoint %d (throw)"), b->number); |
3086aeae | 6521 | else |
a3f17187 | 6522 | printf_filtered (_("Catchpoint %d (catch)"), b->number); |
3086aeae DJ |
6523 | } |
6524 | ||
6525 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6526 | print_exception_catchpoint, | |
6527 | print_one_exception_catchpoint, | |
6528 | print_mention_exception_catchpoint | |
6529 | }; | |
6530 | ||
6531 | static int | |
6532 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6533 | enum exception_event_kind ex_event, int from_tty) | |
6534 | { | |
6535 | char *trigger_func_name, *nameptr; | |
6536 | struct symtabs_and_lines sals; | |
6537 | struct breakpoint *b; | |
6538 | ||
6539 | if (ex_event == EX_EVENT_CATCH) | |
6540 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6541 | else | |
6542 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6543 | ||
6544 | nameptr = trigger_func_name; | |
68219205 | 6545 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6546 | if (sals.nelts == 0) |
6547 | { | |
b59661bd | 6548 | xfree (trigger_func_name); |
3086aeae DJ |
6549 | return 0; |
6550 | } | |
6551 | ||
6552 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6553 | set_breakpoint_count (breakpoint_count + 1); | |
6554 | b->number = breakpoint_count; | |
3086aeae DJ |
6555 | b->cond_string = (cond_string == NULL) ? |
6556 | NULL : savestring (cond_string, strlen (cond_string)); | |
6557 | b->thread = -1; | |
6558 | b->addr_string = trigger_func_name; | |
6559 | b->enable_state = bp_enabled; | |
6560 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6561 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6562 | ||
b59661bd | 6563 | xfree (sals.sals); |
3086aeae | 6564 | mention (b); |
74960c60 | 6565 | update_global_location_list (); |
3086aeae DJ |
6566 | return 1; |
6567 | } | |
6568 | ||
c5aa993b | 6569 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6570 | |
6571 | static void | |
fba45db2 KB |
6572 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6573 | int tempflag, int from_tty) | |
c906108c | 6574 | { |
c5aa993b JM |
6575 | char *cond_string = NULL; |
6576 | struct symtab_and_line *sal = NULL; | |
6577 | ||
c906108c | 6578 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6579 | |
c906108c SS |
6580 | cond_string = ep_parse_optional_if_clause (&arg); |
6581 | ||
6582 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6583 | error (_("Junk at end of arguments.")); |
c906108c SS |
6584 | |
6585 | if ((ex_event != EX_EVENT_THROW) && | |
6586 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6587 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6588 | |
3086aeae DJ |
6589 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6590 | return; | |
6591 | ||
8a3fe4f8 | 6592 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6593 | } |
6594 | ||
f7f9143b JB |
6595 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6596 | ||
6597 | static void | |
6598 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6599 | char *addr_string, | |
6600 | char *exp_string, | |
6601 | char *cond_string, | |
6602 | struct expression *cond, | |
6603 | struct breakpoint_ops *ops, | |
6604 | int tempflag, | |
6605 | int from_tty) | |
6606 | { | |
6607 | struct breakpoint *b; | |
6608 | ||
6609 | if (from_tty) | |
6610 | { | |
6611 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6612 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6613 | version for exception catchpoints, because two catchpoints | |
6614 | used for different exception names will use the same address. | |
6615 | In this case, a "breakpoint ... also set at..." warning is | |
6616 | unproductive. Besides. the warning phrasing is also a bit | |
6617 | inapropriate, we should use the word catchpoint, and tell | |
6618 | the user what type of catchpoint it is. The above is good | |
6619 | enough for now, though. */ | |
6620 | } | |
6621 | ||
6622 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6623 | set_breakpoint_count (breakpoint_count + 1); | |
6624 | ||
6625 | b->enable_state = bp_enabled; | |
6626 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6627 | b->number = breakpoint_count; | |
6628 | b->ignore_count = 0; | |
511a6cd4 | 6629 | b->loc->cond = cond; |
f7f9143b JB |
6630 | b->addr_string = addr_string; |
6631 | b->language = language_ada; | |
6632 | b->cond_string = cond_string; | |
6633 | b->exp_string = exp_string; | |
6634 | b->thread = -1; | |
6635 | b->ops = ops; | |
f7f9143b JB |
6636 | |
6637 | mention (b); | |
74960c60 | 6638 | update_global_location_list (); |
f7f9143b JB |
6639 | } |
6640 | ||
6641 | /* Implement the "catch exception" command. */ | |
6642 | ||
6643 | static void | |
6644 | catch_ada_exception_command (char *arg, int tempflag, int from_tty) | |
6645 | { | |
6646 | struct symtab_and_line sal; | |
6647 | enum bptype type; | |
6648 | char *addr_string = NULL; | |
6649 | char *exp_string = NULL; | |
6650 | char *cond_string = NULL; | |
6651 | struct expression *cond = NULL; | |
6652 | struct breakpoint_ops *ops = NULL; | |
6653 | ||
6654 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, | |
6655 | &cond_string, &cond, &ops); | |
6656 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6657 | cond_string, cond, ops, tempflag, | |
6658 | from_tty); | |
6659 | } | |
6660 | ||
6661 | /* Implement the "catch assert" command. */ | |
6662 | ||
6663 | static void | |
6664 | catch_assert_command (char *arg, int tempflag, int from_tty) | |
6665 | { | |
6666 | struct symtab_and_line sal; | |
6667 | char *addr_string = NULL; | |
6668 | struct breakpoint_ops *ops = NULL; | |
6669 | ||
6670 | sal = ada_decode_assert_location (arg, &addr_string, &ops); | |
6671 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6672 | tempflag, from_tty); | |
6673 | } | |
6674 | ||
c906108c | 6675 | static void |
fba45db2 | 6676 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6677 | { |
c5aa993b | 6678 | |
c906108c SS |
6679 | /* The first argument may be an event name, such as "start" or "load". |
6680 | If so, then handle it as such. If it doesn't match an event name, | |
6681 | then attempt to interpret it as an exception name. (This latter is | |
6682 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6683 | |
c906108c | 6684 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6685 | char *arg1_start = arg; |
6686 | char *arg1_end; | |
6687 | int arg1_length; | |
6688 | ||
c906108c SS |
6689 | if (arg1_start == NULL) |
6690 | { | |
c5aa993b | 6691 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6692 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6693 | /* return; */ | |
c5aa993b | 6694 | /* Now, this is not allowed */ |
8a3fe4f8 | 6695 | error (_("Catch requires an event name.")); |
c906108c SS |
6696 | |
6697 | } | |
6698 | arg1_end = ep_find_event_name_end (arg1_start); | |
6699 | if (arg1_end == NULL) | |
8a3fe4f8 | 6700 | error (_("catch requires an event")); |
c906108c | 6701 | arg1_length = arg1_end + 1 - arg1_start; |
c5aa993b | 6702 | |
c906108c SS |
6703 | /* Try to match what we found against known event names. */ |
6704 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6705 | { | |
8a3fe4f8 | 6706 | error (_("Catch of signal not yet implemented")); |
c906108c SS |
6707 | } |
6708 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6709 | { | |
53a5351d JM |
6710 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6711 | tempflag, from_tty); | |
c906108c SS |
6712 | } |
6713 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6714 | { | |
53a5351d JM |
6715 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6716 | tempflag, from_tty); | |
c906108c SS |
6717 | } |
6718 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6719 | { | |
8a3fe4f8 | 6720 | error (_("Catch of thread_start not yet implemented")); |
c906108c SS |
6721 | } |
6722 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6723 | { | |
8a3fe4f8 | 6724 | error (_("Catch of thread_exit not yet implemented")); |
c906108c SS |
6725 | } |
6726 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6727 | { | |
8a3fe4f8 | 6728 | error (_("Catch of thread_join not yet implemented")); |
c906108c SS |
6729 | } |
6730 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6731 | { | |
8a3fe4f8 | 6732 | error (_("Catch of start not yet implemented")); |
c906108c SS |
6733 | } |
6734 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6735 | { | |
8a3fe4f8 | 6736 | error (_("Catch of exit not yet implemented")); |
c906108c SS |
6737 | } |
6738 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6739 | { | |
c5aa993b | 6740 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6741 | } |
6742 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6743 | { | |
c5aa993b | 6744 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6745 | } |
6746 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6747 | { | |
c5aa993b | 6748 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6749 | } |
6750 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6751 | { | |
c5aa993b | 6752 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6753 | } |
6754 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6755 | { | |
c5aa993b | 6756 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6757 | } |
6758 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6759 | { | |
8a3fe4f8 | 6760 | error (_("Catch of stop not yet implemented")); |
c906108c | 6761 | } |
f7f9143b JB |
6762 | else if (strncmp (arg1_start, "exception", arg1_length) == 0) |
6763 | { | |
6764 | catch_ada_exception_command (arg1_end + 1, tempflag, from_tty); | |
6765 | } | |
6766 | ||
6767 | else if (strncmp (arg1_start, "assert", arg1_length) == 0) | |
6768 | { | |
6769 | catch_assert_command (arg1_end + 1, tempflag, from_tty); | |
6770 | } | |
c5aa993b | 6771 | |
c906108c SS |
6772 | /* This doesn't appear to be an event name */ |
6773 | ||
6774 | else | |
6775 | { | |
6776 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6777 | as the name of an exception */ |
c906108c | 6778 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6779 | /* Now this is not allowed */ |
8a3fe4f8 | 6780 | error (_("Unknown event kind specified for catch")); |
c906108c SS |
6781 | |
6782 | } | |
6783 | } | |
6784 | ||
c906108c | 6785 | static void |
fba45db2 | 6786 | catch_command (char *arg, int from_tty) |
c906108c SS |
6787 | { |
6788 | catch_command_1 (arg, 0, from_tty); | |
6789 | } | |
6790 | \f | |
6791 | ||
6792 | static void | |
fba45db2 | 6793 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6794 | { |
6795 | catch_command_1 (arg, 1, from_tty); | |
6796 | } | |
6797 | ||
80f8a6eb | 6798 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6799 | |
6800 | static void | |
fba45db2 | 6801 | clear_command (char *arg, int from_tty) |
c906108c | 6802 | { |
d6e956e5 VP |
6803 | struct breakpoint *b; |
6804 | VEC(breakpoint_p) *found = 0; | |
6805 | int ix; | |
c906108c SS |
6806 | int default_match; |
6807 | struct symtabs_and_lines sals; | |
6808 | struct symtab_and_line sal; | |
c906108c SS |
6809 | int i; |
6810 | ||
6811 | if (arg) | |
6812 | { | |
6813 | sals = decode_line_spec (arg, 1); | |
6814 | default_match = 0; | |
6815 | } | |
6816 | else | |
6817 | { | |
c5aa993b | 6818 | sals.sals = (struct symtab_and_line *) |
c906108c | 6819 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6820 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6821 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6822 | sal.line = default_breakpoint_line; |
6823 | sal.symtab = default_breakpoint_symtab; | |
6824 | sal.pc = default_breakpoint_address; | |
6825 | if (sal.symtab == 0) | |
8a3fe4f8 | 6826 | error (_("No source file specified.")); |
c906108c SS |
6827 | |
6828 | sals.sals[0] = sal; | |
6829 | sals.nelts = 1; | |
6830 | ||
6831 | default_match = 1; | |
6832 | } | |
6833 | ||
ed0616c6 VP |
6834 | /* We don't call resolve_sal_pc here. That's not |
6835 | as bad as it seems, because all existing breakpoints | |
6836 | typically have both file/line and pc set. So, if | |
6837 | clear is given file/line, we can match this to existing | |
6838 | breakpoint without obtaining pc at all. | |
6839 | ||
6840 | We only support clearing given the address explicitly | |
6841 | present in breakpoint table. Say, we've set breakpoint | |
6842 | at file:line. There were several PC values for that file:line, | |
6843 | due to optimization, all in one block. | |
6844 | We've picked one PC value. If "clear" is issued with another | |
6845 | PC corresponding to the same file:line, the breakpoint won't | |
6846 | be cleared. We probably can still clear the breakpoint, but | |
6847 | since the other PC value is never presented to user, user | |
6848 | can only find it by guessing, and it does not seem important | |
6849 | to support that. */ | |
6850 | ||
c906108c | 6851 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
6852 | to it. Do it in two passes, solely to preserve the current |
6853 | behavior that from_tty is forced true if we delete more than | |
6854 | one breakpoint. */ | |
c906108c | 6855 | |
80f8a6eb | 6856 | found = NULL; |
c906108c SS |
6857 | for (i = 0; i < sals.nelts; i++) |
6858 | { | |
6859 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6860 | If line given (pc == 0), clear all bpts on specified line. |
6861 | If defaulting, clear all bpts on default line | |
c906108c | 6862 | or at default pc. |
c5aa993b JM |
6863 | |
6864 | defaulting sal.pc != 0 tests to do | |
6865 | ||
6866 | 0 1 pc | |
6867 | 1 1 pc _and_ line | |
6868 | 0 0 line | |
6869 | 1 0 <can't happen> */ | |
c906108c SS |
6870 | |
6871 | sal = sals.sals[i]; | |
c906108c | 6872 | |
d6e956e5 VP |
6873 | /* Find all matching breakpoints and add them to |
6874 | 'found'. */ | |
6875 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6876 | { |
0d381245 | 6877 | int match = 0; |
80f8a6eb MS |
6878 | /* Are we going to delete b? */ |
6879 | if (b->type != bp_none | |
6880 | && b->type != bp_watchpoint | |
6881 | && b->type != bp_hardware_watchpoint | |
6882 | && b->type != bp_read_watchpoint | |
0d381245 VP |
6883 | && b->type != bp_access_watchpoint) |
6884 | { | |
6885 | struct bp_location *loc = b->loc; | |
6886 | for (; loc; loc = loc->next) | |
6887 | { | |
6888 | int pc_match = sal.pc | |
6889 | && (loc->address == sal.pc) | |
6890 | && (!section_is_overlay (loc->section) | |
6891 | || loc->section == sal.section); | |
6892 | int line_match = ((default_match || (0 == sal.pc)) | |
6893 | && b->source_file != NULL | |
6894 | && sal.symtab != NULL | |
6895 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
6896 | && b->line_number == sal.line); | |
6897 | if (pc_match || line_match) | |
6898 | { | |
6899 | match = 1; | |
6900 | break; | |
6901 | } | |
6902 | } | |
6903 | } | |
6904 | ||
6905 | if (match) | |
d6e956e5 | 6906 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 6907 | } |
80f8a6eb MS |
6908 | } |
6909 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 6910 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
6911 | { |
6912 | if (arg) | |
8a3fe4f8 | 6913 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6914 | else |
8a3fe4f8 | 6915 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6916 | } |
c906108c | 6917 | |
d6e956e5 | 6918 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
6919 | from_tty = 1; /* Always report if deleted more than one */ |
6920 | if (from_tty) | |
a3f17187 | 6921 | { |
d6e956e5 | 6922 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
6923 | printf_unfiltered (_("Deleted breakpoint ")); |
6924 | else | |
6925 | printf_unfiltered (_("Deleted breakpoints ")); | |
6926 | } | |
80f8a6eb | 6927 | breakpoints_changed (); |
d6e956e5 VP |
6928 | |
6929 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 6930 | { |
c5aa993b | 6931 | if (from_tty) |
d6e956e5 VP |
6932 | printf_unfiltered ("%d ", b->number); |
6933 | delete_breakpoint (b); | |
c906108c | 6934 | } |
80f8a6eb MS |
6935 | if (from_tty) |
6936 | putchar_unfiltered ('\n'); | |
c906108c SS |
6937 | } |
6938 | \f | |
6939 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6940 | all breakpoints that are marked for deletion, whether hit or not. | |
6941 | This is called after any breakpoint is hit, or after errors. */ | |
6942 | ||
6943 | void | |
fba45db2 | 6944 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6945 | { |
6946 | struct breakpoint *b, *temp; | |
6947 | ||
6948 | for (; bs; bs = bs->next) | |
4f8d1dc6 | 6949 | if (bs->breakpoint_at && bs->breakpoint_at->owner->disposition == disp_del |
c906108c | 6950 | && bs->stop) |
4f8d1dc6 | 6951 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
6952 | |
6953 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6954 | { |
b5de0fa7 | 6955 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6956 | delete_breakpoint (b); |
6957 | } | |
c906108c SS |
6958 | } |
6959 | ||
0d381245 | 6960 | static void |
74960c60 | 6961 | update_global_location_list (void) |
0d381245 | 6962 | { |
74960c60 VP |
6963 | struct breakpoint *b; |
6964 | struct bp_location **next = &bp_location_chain; | |
6965 | struct bp_location *loc; | |
6966 | struct bp_location *loc2; | |
6967 | struct gdb_exception e; | |
6968 | VEC(bp_location_p) *old_locations = NULL; | |
6969 | int ret; | |
6970 | int ix; | |
6971 | ||
6972 | /* Store old locations for future reference. */ | |
6973 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
6974 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 6975 | |
74960c60 VP |
6976 | bp_location_chain = NULL; |
6977 | ALL_BREAKPOINTS (b) | |
0d381245 | 6978 | { |
74960c60 | 6979 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 6980 | { |
74960c60 VP |
6981 | *next = loc; |
6982 | next = &(loc->global_next); | |
6983 | *next = NULL; | |
0d381245 | 6984 | } |
74960c60 VP |
6985 | } |
6986 | ||
6987 | /* Identify bp_location instances that are no longer present in the new | |
6988 | list, and therefore should be freed. Note that it's not necessary that | |
6989 | those locations should be removed from inferior -- if there's another | |
6990 | location at the same address (previously marked as duplicate), | |
6991 | we don't need to remove/insert the location. */ | |
6992 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
6993 | { | |
6994 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
6995 | have to free it. */ | |
6996 | int found_object = 0; | |
6997 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
6998 | if (loc2 == loc) | |
6999 | { | |
7000 | found_object = 1; | |
7001 | break; | |
7002 | } | |
7003 | ||
7004 | /* If this location is no longer present, and inserted, look if there's | |
7005 | maybe a new location at the same address. If so, mark that one | |
7006 | inserted, and don't remove this one. This is needed so that we | |
7007 | don't have a time window where a breakpoint at certain location is not | |
7008 | inserted. */ | |
7009 | ||
7010 | if (loc->inserted) | |
0d381245 | 7011 | { |
74960c60 VP |
7012 | /* If the location is inserted now, we might have to remove it. */ |
7013 | int keep = 0; | |
7014 | ||
7015 | if (found_object && should_be_inserted (loc)) | |
7016 | { | |
7017 | /* The location is still present in the location list, and still | |
7018 | should be inserted. Don't do anything. */ | |
7019 | keep = 1; | |
7020 | } | |
7021 | else | |
7022 | { | |
7023 | /* The location is either no longer present, or got disabled. | |
7024 | See if there's another location at the same address, in which | |
7025 | case we don't need to remove this one from the target. */ | |
7026 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7027 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7028 | { | |
7029 | /* For the sake of should_insert_location. The | |
7030 | call to check_duplicates will fix up this later. */ | |
7031 | loc2->duplicate = 0; | |
7032 | if (should_be_inserted (loc2) | |
7033 | && loc2 != loc && loc2->address == loc->address) | |
7034 | { | |
7035 | loc2->inserted = 1; | |
7036 | loc2->target_info = loc->target_info; | |
7037 | keep = 1; | |
7038 | break; | |
7039 | } | |
7040 | } | |
7041 | } | |
7042 | ||
7043 | if (!keep) | |
7044 | if (remove_breakpoint (loc, mark_uninserted)) | |
7045 | { | |
7046 | /* This is just about all we can do. We could keep this | |
7047 | location on the global list, and try to remove it next | |
7048 | time, but there's no particular reason why we will | |
7049 | succeed next time. | |
7050 | ||
7051 | Note that at this point, loc->owner is still valid, | |
7052 | as delete_breakpoint frees the breakpoint only | |
7053 | after calling us. */ | |
7054 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7055 | loc->owner->number); | |
7056 | } | |
0d381245 | 7057 | } |
74960c60 VP |
7058 | |
7059 | if (!found_object) | |
7060 | free_bp_location (loc); | |
7061 | } | |
7062 | ||
7063 | ALL_BREAKPOINTS (b) | |
7064 | { | |
7065 | check_duplicates (b); | |
0d381245 | 7066 | } |
74960c60 VP |
7067 | |
7068 | if (always_inserted_mode && target_has_execution) | |
7069 | insert_breakpoint_locations (); | |
7070 | } | |
7071 | ||
7072 | static void | |
7073 | update_global_location_list_nothrow (void) | |
7074 | { | |
7075 | struct gdb_exception e; | |
7076 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7077 | update_global_location_list (); | |
0d381245 VP |
7078 | } |
7079 | ||
53a5351d JM |
7080 | /* Delete a breakpoint and clean up all traces of it in the data |
7081 | structures. */ | |
c906108c SS |
7082 | |
7083 | void | |
fba45db2 | 7084 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7085 | { |
52f0bd74 AC |
7086 | struct breakpoint *b; |
7087 | bpstat bs; | |
74960c60 | 7088 | struct bp_location *loc, *next; |
c906108c | 7089 | |
8a3fe4f8 | 7090 | gdb_assert (bpt != NULL); |
c906108c SS |
7091 | |
7092 | /* Has this bp already been deleted? This can happen because multiple | |
7093 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7094 | ||
7095 | One example of this happening is a watchpoint's scope bp. When the | |
7096 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7097 | delete it. We also delete its scope bp. But the scope bp is marked | |
7098 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7099 | checked for auto-deleting bp's, which are deleted. | |
7100 | ||
7101 | A real solution to this problem might involve reference counts in bp's, | |
7102 | and/or giving them pointers back to their referencing bpstat's, and | |
7103 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7104 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7105 | if (bpt->type == bp_none) |
7106 | return; | |
7107 | ||
9a4105ab AC |
7108 | if (deprecated_delete_breakpoint_hook) |
7109 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 7110 | breakpoint_delete_event (bpt->number); |
c906108c | 7111 | |
c906108c SS |
7112 | if (breakpoint_chain == bpt) |
7113 | breakpoint_chain = bpt->next; | |
7114 | ||
c906108c SS |
7115 | ALL_BREAKPOINTS (b) |
7116 | if (b->next == bpt) | |
c5aa993b JM |
7117 | { |
7118 | b->next = bpt->next; | |
7119 | break; | |
7120 | } | |
c906108c | 7121 | |
c906108c | 7122 | free_command_lines (&bpt->commands); |
c906108c | 7123 | if (bpt->cond_string != NULL) |
b8c9b27d | 7124 | xfree (bpt->cond_string); |
c906108c | 7125 | if (bpt->addr_string != NULL) |
b8c9b27d | 7126 | xfree (bpt->addr_string); |
c906108c | 7127 | if (bpt->exp != NULL) |
b8c9b27d | 7128 | xfree (bpt->exp); |
c906108c | 7129 | if (bpt->exp_string != NULL) |
b8c9b27d | 7130 | xfree (bpt->exp_string); |
c906108c SS |
7131 | if (bpt->val != NULL) |
7132 | value_free (bpt->val); | |
7133 | if (bpt->source_file != NULL) | |
b8c9b27d | 7134 | xfree (bpt->source_file); |
c906108c | 7135 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7136 | xfree (bpt->dll_pathname); |
c906108c | 7137 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7138 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7139 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7140 | xfree (bpt->exec_pathname); |
c906108c SS |
7141 | |
7142 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7143 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7144 | We just check stop_bpstat for now. Note that we cannot just |
7145 | remove bpstats pointing at bpt from the stop_bpstat list | |
7146 | entirely, as breakpoint commands are associated with the bpstat; | |
7147 | if we remove it here, then the later call to | |
7148 | bpstat_do_actions (&stop_bpstat); | |
7149 | in event-top.c won't do anything, and temporary breakpoints | |
7150 | with commands won't work. */ | |
c906108c | 7151 | for (bs = stop_bpstat; bs; bs = bs->next) |
4f8d1dc6 | 7152 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) |
c906108c SS |
7153 | { |
7154 | bs->breakpoint_at = NULL; | |
c906108c | 7155 | bs->old_val = NULL; |
c2b8ed2c | 7156 | /* bs->commands will be freed later. */ |
c906108c | 7157 | } |
74960c60 VP |
7158 | |
7159 | /* Now that breakpoint is removed from breakpoint | |
7160 | list, update the global location list. This | |
7161 | will remove locations that used to belong to | |
7162 | this breakpoint. Do this before freeing | |
7163 | the breakpoint itself, since remove_breakpoint | |
7164 | looks at location's owner. It might be better | |
7165 | design to have location completely self-contained, | |
7166 | but it's not the case now. */ | |
7167 | update_global_location_list (); | |
7168 | ||
7169 | ||
c906108c SS |
7170 | /* On the chance that someone will soon try again to delete this same |
7171 | bp, we mark it as deleted before freeing its storage. */ | |
7172 | bpt->type = bp_none; | |
7173 | ||
b8c9b27d | 7174 | xfree (bpt); |
c906108c SS |
7175 | } |
7176 | ||
4d6140d9 AC |
7177 | static void |
7178 | do_delete_breakpoint_cleanup (void *b) | |
7179 | { | |
7180 | delete_breakpoint (b); | |
7181 | } | |
7182 | ||
7183 | struct cleanup * | |
7184 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7185 | { | |
7186 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7187 | } | |
7188 | ||
c906108c | 7189 | void |
fba45db2 | 7190 | delete_command (char *arg, int from_tty) |
c906108c SS |
7191 | { |
7192 | struct breakpoint *b, *temp; | |
7193 | ||
ea9365bb TT |
7194 | dont_repeat (); |
7195 | ||
c906108c SS |
7196 | if (arg == 0) |
7197 | { | |
7198 | int breaks_to_delete = 0; | |
7199 | ||
7200 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7201 | Do not delete internal or call-dummy breakpoints, these |
7202 | have to be deleted with an explicit breakpoint number argument. */ | |
7203 | ALL_BREAKPOINTS (b) | |
7204 | { | |
7205 | if (b->type != bp_call_dummy && | |
7206 | b->type != bp_shlib_event && | |
c4093a6a | 7207 | b->type != bp_thread_event && |
1900040c | 7208 | b->type != bp_overlay_event && |
c5aa993b | 7209 | b->number >= 0) |
973d738b DJ |
7210 | { |
7211 | breaks_to_delete = 1; | |
7212 | break; | |
7213 | } | |
c5aa993b | 7214 | } |
c906108c SS |
7215 | |
7216 | /* Ask user only if there are some breakpoints to delete. */ | |
7217 | if (!from_tty | |
e2e0b3e5 | 7218 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7219 | { |
c5aa993b JM |
7220 | ALL_BREAKPOINTS_SAFE (b, temp) |
7221 | { | |
7222 | if (b->type != bp_call_dummy && | |
7223 | b->type != bp_shlib_event && | |
c4093a6a | 7224 | b->type != bp_thread_event && |
1900040c | 7225 | b->type != bp_overlay_event && |
c5aa993b JM |
7226 | b->number >= 0) |
7227 | delete_breakpoint (b); | |
7228 | } | |
c906108c SS |
7229 | } |
7230 | } | |
7231 | else | |
7232 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7233 | } | |
7234 | ||
0d381245 VP |
7235 | static int |
7236 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7237 | { |
0d381245 VP |
7238 | for (; loc; loc = loc->next) |
7239 | if (!loc->shlib_disabled) | |
7240 | return 0; | |
7241 | return 1; | |
fe3f5fa8 VP |
7242 | } |
7243 | ||
776592bf DE |
7244 | /* Subroutine of update_breakpoint_locations to simplify it. |
7245 | Return non-zero if multiple fns in list LOC have the same name. | |
7246 | Null names are ignored. */ | |
7247 | ||
7248 | static int | |
7249 | ambiguous_names_p (struct bp_location *loc) | |
7250 | { | |
7251 | struct bp_location *l; | |
7252 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7253 | (int (*) (const void *, const void *)) streq, | |
7254 | NULL, xcalloc, xfree); | |
7255 | ||
7256 | for (l = loc; l != NULL; l = l->next) | |
7257 | { | |
7258 | const char **slot; | |
7259 | const char *name = l->function_name; | |
7260 | ||
7261 | /* Allow for some names to be NULL, ignore them. */ | |
7262 | if (name == NULL) | |
7263 | continue; | |
7264 | ||
7265 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7266 | INSERT); | |
7267 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7268 | NULL. */ | |
7269 | if (*slot != NULL) | |
7270 | { | |
7271 | htab_delete (htab); | |
7272 | return 1; | |
7273 | } | |
7274 | *slot = name; | |
7275 | } | |
7276 | ||
7277 | htab_delete (htab); | |
7278 | return 0; | |
7279 | } | |
7280 | ||
fe3f5fa8 | 7281 | static void |
0d381245 VP |
7282 | update_breakpoint_locations (struct breakpoint *b, |
7283 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7284 | { |
7285 | int i; | |
7286 | char *s; | |
0d381245 VP |
7287 | struct bp_location *existing_locations = b->loc; |
7288 | ||
7289 | /* If there's no new locations, and all existing locations | |
7290 | are pending, don't do anything. This optimizes | |
7291 | the common case where all locations are in the same | |
7292 | shared library, that was unloaded. We'd like to | |
7293 | retain the location, so that when the library | |
7294 | is loaded again, we don't loose the enabled/disabled | |
7295 | status of the individual locations. */ | |
7296 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7297 | return; |
7298 | ||
fe3f5fa8 VP |
7299 | b->loc = NULL; |
7300 | ||
0d381245 | 7301 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7302 | { |
0d381245 VP |
7303 | struct bp_location *new_loc = |
7304 | add_location_to_breakpoint (b, b->type, &(sals.sals[i])); | |
fe3f5fa8 | 7305 | |
0d381245 VP |
7306 | /* Reparse conditions, they might contain references to the |
7307 | old symtab. */ | |
7308 | if (b->cond_string != NULL) | |
7309 | { | |
7310 | struct gdb_exception e; | |
fe3f5fa8 | 7311 | |
0d381245 VP |
7312 | s = b->cond_string; |
7313 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7314 | { | |
7315 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7316 | 0); | |
7317 | } | |
7318 | if (e.reason < 0) | |
7319 | { | |
7320 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7321 | b->number, e.message); | |
7322 | new_loc->enabled = 0; | |
7323 | } | |
7324 | } | |
fe3f5fa8 | 7325 | |
0d381245 VP |
7326 | if (b->source_file != NULL) |
7327 | xfree (b->source_file); | |
7328 | if (sals.sals[i].symtab == NULL) | |
7329 | b->source_file = NULL; | |
7330 | else | |
7331 | b->source_file = | |
7332 | savestring (sals.sals[i].symtab->filename, | |
7333 | strlen (sals.sals[i].symtab->filename)); | |
fe3f5fa8 | 7334 | |
0d381245 VP |
7335 | if (b->line_number == 0) |
7336 | b->line_number = sals.sals[i].line; | |
7337 | } | |
fe3f5fa8 | 7338 | |
0d381245 VP |
7339 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7340 | { | |
7341 | struct bp_location *e = existing_locations; | |
776592bf DE |
7342 | /* If there are multiple breakpoints with the same function name, |
7343 | e.g. for inline functions, comparing function names won't work. | |
7344 | Instead compare pc addresses; this is just a heuristic as things | |
7345 | may have moved, but in practice it gives the correct answer | |
7346 | often enough until a better solution is found. */ | |
7347 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7348 | ||
0d381245 VP |
7349 | for (; e; e = e->next) |
7350 | { | |
7351 | if (!e->enabled && e->function_name) | |
7352 | { | |
7353 | struct bp_location *l = b->loc; | |
776592bf DE |
7354 | if (have_ambiguous_names) |
7355 | { | |
7356 | for (; l; l = l->next) | |
7357 | if (e->address == l->address) | |
7358 | { | |
7359 | l->enabled = 0; | |
7360 | break; | |
7361 | } | |
7362 | } | |
7363 | else | |
7364 | { | |
7365 | for (; l; l = l->next) | |
7366 | if (l->function_name | |
7367 | && strcmp (e->function_name, l->function_name) == 0) | |
7368 | { | |
7369 | l->enabled = 0; | |
7370 | break; | |
7371 | } | |
7372 | } | |
0d381245 VP |
7373 | } |
7374 | } | |
7375 | } | |
fe3f5fa8 | 7376 | |
74960c60 | 7377 | update_global_location_list (); |
fe3f5fa8 VP |
7378 | } |
7379 | ||
7380 | ||
c906108c SS |
7381 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7382 | The value we return ends up being the return value from catch_errors. | |
7383 | Unused in this case. */ | |
7384 | ||
7385 | static int | |
4efb68b1 | 7386 | breakpoint_re_set_one (void *bint) |
c906108c | 7387 | { |
53a5351d JM |
7388 | /* get past catch_errs */ |
7389 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7390 | struct value *mark; |
7391 | int i; | |
fe3f5fa8 VP |
7392 | int not_found = 0; |
7393 | int *not_found_ptr = ¬_found; | |
7394 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7395 | struct symtabs_and_lines expanded; |
c906108c | 7396 | char *s; |
b5de0fa7 | 7397 | enum enable_state save_enable; |
fe3f5fa8 VP |
7398 | struct gdb_exception e; |
7399 | ||
c906108c SS |
7400 | |
7401 | switch (b->type) | |
7402 | { | |
7403 | case bp_none: | |
8a3fe4f8 | 7404 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7405 | b->number); |
c906108c SS |
7406 | return 0; |
7407 | case bp_breakpoint: | |
7408 | case bp_hardware_breakpoint: | |
7409 | case bp_catch_load: | |
7410 | case bp_catch_unload: | |
7411 | if (b->addr_string == NULL) | |
7412 | { | |
7413 | /* Anything without a string can't be re-set. */ | |
7414 | delete_breakpoint (b); | |
7415 | return 0; | |
7416 | } | |
c906108c SS |
7417 | |
7418 | set_language (b->language); | |
7419 | input_radix = b->input_radix; | |
7420 | s = b->addr_string; | |
fe3f5fa8 | 7421 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7422 | { |
fe3f5fa8 VP |
7423 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7424 | not_found_ptr); | |
7425 | } | |
7426 | if (e.reason < 0) | |
7427 | { | |
7428 | int not_found_and_ok = 0; | |
7429 | /* For pending breakpoints, it's expected that parsing | |
7430 | will fail until the right shared library is loaded. | |
7431 | User has already told to create pending breakpoints and | |
7432 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7433 | state, then user already saw the message about that breakpoint | |
7434 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7435 | if (not_found |
7436 | && (b->condition_not_parsed | |
7437 | || (b->loc && b->loc->shlib_disabled) | |
7438 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7439 | not_found_and_ok = 1; |
7440 | ||
7441 | if (!not_found_and_ok) | |
c906108c | 7442 | { |
fe3f5fa8 VP |
7443 | /* We surely don't want to warn about the same breakpoint |
7444 | 10 times. One solution, implemented here, is disable | |
7445 | the breakpoint on error. Another solution would be to | |
7446 | have separate 'warning emitted' flag. Since this | |
7447 | happens only when a binary has changed, I don't know | |
7448 | which approach is better. */ | |
7449 | b->enable_state = bp_disabled; | |
7450 | throw_exception (e); | |
c906108c | 7451 | } |
fe3f5fa8 | 7452 | } |
c906108c | 7453 | |
fe3f5fa8 VP |
7454 | if (not_found) |
7455 | break; | |
7456 | ||
7457 | gdb_assert (sals.nelts == 1); | |
7458 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7459 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7460 | { |
7461 | char *cond_string = 0; | |
7462 | int thread = -1; | |
7463 | find_condition_and_thread (s, sals.sals[0].pc, | |
7464 | &cond_string, &thread); | |
7465 | if (cond_string) | |
7466 | b->cond_string = cond_string; | |
7467 | b->thread = thread; | |
0d381245 | 7468 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7469 | } |
ed0616c6 VP |
7470 | expanded = expand_line_sal_maybe (sals.sals[0]); |
7471 | update_breakpoint_locations (b, expanded); | |
0d381245 | 7472 | |
b8c9b27d | 7473 | xfree (sals.sals); |
c906108c SS |
7474 | break; |
7475 | ||
7476 | case bp_watchpoint: | |
7477 | case bp_hardware_watchpoint: | |
7478 | case bp_read_watchpoint: | |
7479 | case bp_access_watchpoint: | |
0b3de036 VP |
7480 | /* Watchpoint can be either on expression using entirely global variables, |
7481 | or it can be on local variables. | |
7482 | ||
7483 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7484 | across program restarts. Since they can use variables from shared | |
7485 | libraries, we need to reparse expression as libraries are loaded | |
7486 | and unloaded. | |
7487 | ||
7488 | Watchpoints on local variables can also change meaning as result | |
7489 | of solib event. For example, if a watchpoint uses both a local and | |
7490 | a global variables in expression, it's a local watchpoint, but | |
7491 | unloading of a shared library will make the expression invalid. | |
7492 | This is not a very common use case, but we still re-evaluate | |
7493 | expression, to avoid surprises to the user. | |
7494 | ||
7495 | Note that for local watchpoints, we re-evaluate it only if | |
7496 | watchpoints frame id is still valid. If it's not, it means | |
7497 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7498 | I'm not sure we'll ever be called in this case. | |
7499 | ||
7500 | If a local watchpoint's frame id is still valid, then | |
7501 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7502 | ||
7503 | Don't do anything about disabled watchpoints, since they will | |
7504 | be reevaluated again when enabled. */ | |
a5606eee | 7505 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7506 | break; |
c5aa993b JM |
7507 | /* We needn't really do anything to reset these, since the mask |
7508 | that requests them is unaffected by e.g., new libraries being | |
7509 | loaded. */ | |
c906108c SS |
7510 | case bp_catch_fork: |
7511 | case bp_catch_vfork: | |
7512 | case bp_catch_exec: | |
7513 | break; | |
c5aa993b | 7514 | |
c906108c | 7515 | default: |
a3f17187 | 7516 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7517 | /* fall through */ |
1900040c MS |
7518 | /* Delete longjmp and overlay event breakpoints; they will be |
7519 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7520 | case bp_longjmp: |
7521 | case bp_longjmp_resume: | |
1900040c | 7522 | case bp_overlay_event: |
c906108c SS |
7523 | delete_breakpoint (b); |
7524 | break; | |
7525 | ||
c5aa993b JM |
7526 | /* This breakpoint is special, it's set up when the inferior |
7527 | starts and we really don't want to touch it. */ | |
c906108c SS |
7528 | case bp_shlib_event: |
7529 | ||
c4093a6a JM |
7530 | /* Like bp_shlib_event, this breakpoint type is special. |
7531 | Once it is set up, we do not want to touch it. */ | |
7532 | case bp_thread_event: | |
7533 | ||
c5aa993b JM |
7534 | /* Keep temporary breakpoints, which can be encountered when we step |
7535 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7536 | Otherwise these should have been blown away via the cleanup chain | |
7537 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7538 | case bp_until: |
7539 | case bp_finish: | |
7540 | case bp_watchpoint_scope: | |
7541 | case bp_call_dummy: | |
7542 | case bp_step_resume: | |
7543 | break; | |
7544 | } | |
7545 | ||
7546 | return 0; | |
7547 | } | |
7548 | ||
7549 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7550 | void | |
fba45db2 | 7551 | breakpoint_re_set (void) |
c906108c SS |
7552 | { |
7553 | struct breakpoint *b, *temp; | |
7554 | enum language save_language; | |
7555 | int save_input_radix; | |
c5aa993b | 7556 | |
c906108c SS |
7557 | save_language = current_language->la_language; |
7558 | save_input_radix = input_radix; | |
7559 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7560 | { |
53a5351d | 7561 | /* Format possible error msg */ |
fe3f5fa8 | 7562 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7563 | b->number); |
7564 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7565 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7566 | do_cleanups (cleanups); |
c5aa993b | 7567 | } |
c906108c SS |
7568 | set_language (save_language); |
7569 | input_radix = save_input_radix; | |
7570 | ||
91104499 | 7571 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
9df628e0 RE |
7572 | { |
7573 | create_longjmp_breakpoint ("longjmp"); | |
7574 | create_longjmp_breakpoint ("_longjmp"); | |
7575 | create_longjmp_breakpoint ("siglongjmp"); | |
7576 | create_longjmp_breakpoint ("_siglongjmp"); | |
7577 | create_longjmp_breakpoint (NULL); | |
7578 | } | |
1900040c MS |
7579 | |
7580 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7581 | } |
7582 | \f | |
c906108c SS |
7583 | /* Reset the thread number of this breakpoint: |
7584 | ||
7585 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7586 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7587 | void |
fba45db2 | 7588 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7589 | { |
7590 | if (b->thread != -1) | |
7591 | { | |
39f77062 KB |
7592 | if (in_thread_list (inferior_ptid)) |
7593 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7594 | } |
7595 | } | |
7596 | ||
03ac34d5 MS |
7597 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7598 | If from_tty is nonzero, it prints a message to that effect, | |
7599 | which ends with a period (no newline). */ | |
7600 | ||
c906108c | 7601 | void |
fba45db2 | 7602 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7603 | { |
52f0bd74 | 7604 | struct breakpoint *b; |
c906108c SS |
7605 | |
7606 | if (count < 0) | |
7607 | count = 0; | |
7608 | ||
7609 | ALL_BREAKPOINTS (b) | |
7610 | if (b->number == bptnum) | |
c5aa993b JM |
7611 | { |
7612 | b->ignore_count = count; | |
221ea385 KS |
7613 | if (from_tty) |
7614 | { | |
7615 | if (count == 0) | |
a3f17187 | 7616 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7617 | bptnum); |
7618 | else if (count == 1) | |
a3f17187 | 7619 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7620 | bptnum); |
7621 | else | |
a3f17187 | 7622 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7623 | count, bptnum); |
7624 | } | |
c5aa993b | 7625 | breakpoints_changed (); |
221ea385 | 7626 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7627 | return; |
7628 | } | |
c906108c | 7629 | |
8a3fe4f8 | 7630 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7631 | } |
7632 | ||
7633 | /* Clear the ignore counts of all breakpoints. */ | |
7634 | void | |
fba45db2 | 7635 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7636 | { |
7637 | struct breakpoint *b; | |
7638 | ||
7639 | ALL_BREAKPOINTS (b) | |
7640 | b->ignore_count = 0; | |
7641 | } | |
7642 | ||
7643 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7644 | ||
7645 | static void | |
fba45db2 | 7646 | ignore_command (char *args, int from_tty) |
c906108c SS |
7647 | { |
7648 | char *p = args; | |
52f0bd74 | 7649 | int num; |
c906108c SS |
7650 | |
7651 | if (p == 0) | |
e2e0b3e5 | 7652 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7653 | |
c906108c | 7654 | num = get_number (&p); |
5c44784c | 7655 | if (num == 0) |
8a3fe4f8 | 7656 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7657 | if (*p == 0) |
8a3fe4f8 | 7658 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7659 | |
7660 | set_ignore_count (num, | |
7661 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7662 | from_tty); | |
221ea385 KS |
7663 | if (from_tty) |
7664 | printf_filtered ("\n"); | |
c906108c SS |
7665 | } |
7666 | \f | |
7667 | /* Call FUNCTION on each of the breakpoints | |
7668 | whose numbers are given in ARGS. */ | |
7669 | ||
7670 | static void | |
831662b3 | 7671 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7672 | { |
52f0bd74 | 7673 | char *p = args; |
c906108c | 7674 | char *p1; |
52f0bd74 AC |
7675 | int num; |
7676 | struct breakpoint *b, *tmp; | |
11cf8741 | 7677 | int match; |
c906108c SS |
7678 | |
7679 | if (p == 0) | |
e2e0b3e5 | 7680 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7681 | |
7682 | while (*p) | |
7683 | { | |
11cf8741 | 7684 | match = 0; |
c906108c | 7685 | p1 = p; |
c5aa993b | 7686 | |
5c44784c JM |
7687 | num = get_number_or_range (&p1); |
7688 | if (num == 0) | |
c5aa993b | 7689 | { |
8a3fe4f8 | 7690 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7691 | } |
7692 | else | |
7693 | { | |
7694 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7695 | if (b->number == num) | |
7696 | { | |
7697 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7698 | match = 1; |
5c44784c JM |
7699 | function (b); |
7700 | if (related_breakpoint) | |
7701 | function (related_breakpoint); | |
11cf8741 | 7702 | break; |
5c44784c | 7703 | } |
11cf8741 | 7704 | if (match == 0) |
a3f17187 | 7705 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7706 | } |
c906108c SS |
7707 | p = p1; |
7708 | } | |
7709 | } | |
7710 | ||
0d381245 VP |
7711 | static struct bp_location * |
7712 | find_location_by_number (char *number) | |
7713 | { | |
7714 | char *dot = strchr (number, '.'); | |
7715 | char *p1; | |
7716 | int bp_num; | |
7717 | int loc_num; | |
7718 | struct breakpoint *b; | |
7719 | struct bp_location *loc; | |
7720 | ||
7721 | *dot = '\0'; | |
7722 | ||
7723 | p1 = number; | |
7724 | bp_num = get_number_or_range (&p1); | |
7725 | if (bp_num == 0) | |
7726 | error (_("Bad breakpoint number '%s'"), number); | |
7727 | ||
7728 | ALL_BREAKPOINTS (b) | |
7729 | if (b->number == bp_num) | |
7730 | { | |
7731 | break; | |
7732 | } | |
7733 | ||
7734 | if (!b || b->number != bp_num) | |
7735 | error (_("Bad breakpoint number '%s'"), number); | |
7736 | ||
7737 | p1 = dot+1; | |
7738 | loc_num = get_number_or_range (&p1); | |
7739 | if (loc_num == 0) | |
7740 | error (_("Bad breakpoint location number '%s'"), number); | |
7741 | ||
7742 | --loc_num; | |
7743 | loc = b->loc; | |
7744 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7745 | ; | |
7746 | if (!loc) | |
7747 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7748 | ||
7749 | return loc; | |
7750 | } | |
7751 | ||
7752 | ||
1900040c MS |
7753 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7754 | If from_tty is nonzero, it prints a message to that effect, | |
7755 | which ends with a period (no newline). */ | |
7756 | ||
c906108c | 7757 | void |
fba45db2 | 7758 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7759 | { |
7760 | /* Never disable a watchpoint scope breakpoint; we want to | |
7761 | hit them when we leave scope so we can delete both the | |
7762 | watchpoint and its scope breakpoint at that time. */ | |
7763 | if (bpt->type == bp_watchpoint_scope) | |
7764 | return; | |
7765 | ||
c2c6d25f | 7766 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7767 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7768 | return; |
7769 | ||
b5de0fa7 | 7770 | bpt->enable_state = bp_disabled; |
c906108c | 7771 | |
74960c60 | 7772 | update_global_location_list (); |
c906108c | 7773 | |
9a4105ab AC |
7774 | if (deprecated_modify_breakpoint_hook) |
7775 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7776 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7777 | } |
7778 | ||
c906108c | 7779 | static void |
fba45db2 | 7780 | disable_command (char *args, int from_tty) |
c906108c | 7781 | { |
52f0bd74 | 7782 | struct breakpoint *bpt; |
c906108c SS |
7783 | if (args == 0) |
7784 | ALL_BREAKPOINTS (bpt) | |
7785 | switch (bpt->type) | |
c5aa993b JM |
7786 | { |
7787 | case bp_none: | |
8a3fe4f8 | 7788 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7789 | bpt->number); |
c5aa993b JM |
7790 | continue; |
7791 | case bp_breakpoint: | |
7792 | case bp_catch_load: | |
7793 | case bp_catch_unload: | |
7794 | case bp_catch_fork: | |
7795 | case bp_catch_vfork: | |
7796 | case bp_catch_exec: | |
c5aa993b JM |
7797 | case bp_hardware_breakpoint: |
7798 | case bp_watchpoint: | |
7799 | case bp_hardware_watchpoint: | |
7800 | case bp_read_watchpoint: | |
7801 | case bp_access_watchpoint: | |
7802 | disable_breakpoint (bpt); | |
7803 | default: | |
7804 | continue; | |
7805 | } | |
0d381245 VP |
7806 | else if (strchr (args, '.')) |
7807 | { | |
7808 | struct bp_location *loc = find_location_by_number (args); | |
7809 | if (loc) | |
7810 | loc->enabled = 0; | |
74960c60 | 7811 | update_global_location_list (); |
0d381245 | 7812 | } |
c906108c SS |
7813 | else |
7814 | map_breakpoint_numbers (args, disable_breakpoint); | |
7815 | } | |
7816 | ||
7817 | static void | |
fba45db2 | 7818 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7819 | { |
c906108c SS |
7820 | int target_resources_ok, other_type_used; |
7821 | struct value *mark; | |
7822 | ||
7823 | if (bpt->type == bp_hardware_breakpoint) | |
7824 | { | |
7825 | int i; | |
c5aa993b | 7826 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7827 | target_resources_ok = |
7828 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7829 | i + 1, 0); | |
c906108c | 7830 | if (target_resources_ok == 0) |
8a3fe4f8 | 7831 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7832 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7833 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7834 | } |
7835 | ||
fe3f5fa8 VP |
7836 | if (bpt->type == bp_watchpoint || |
7837 | bpt->type == bp_hardware_watchpoint || | |
7838 | bpt->type == bp_read_watchpoint || | |
7839 | bpt->type == bp_access_watchpoint) | |
c906108c | 7840 | { |
fe3f5fa8 VP |
7841 | struct frame_id saved_frame_id; |
7842 | ||
7843 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
7844 | if (bpt->exp_valid_block != NULL) | |
c906108c | 7845 | { |
fe3f5fa8 VP |
7846 | struct frame_info *fr = |
7847 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7848 | if (fr == NULL) | |
c906108c | 7849 | { |
fe3f5fa8 VP |
7850 | printf_filtered (_("\ |
7851 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7852 | is valid is not currently in scope.\n"), bpt->number); | |
c906108c SS |
7853 | return; |
7854 | } | |
fe3f5fa8 | 7855 | select_frame (fr); |
c906108c | 7856 | } |
0101ce28 | 7857 | |
b4c291bb KH |
7858 | if (bpt->val) |
7859 | value_free (bpt->val); | |
fe3f5fa8 | 7860 | mark = value_mark (); |
fa4727a6 DJ |
7861 | fetch_watchpoint_value (bpt->exp, &bpt->val, NULL, NULL); |
7862 | if (bpt->val) | |
7863 | release_value (bpt->val); | |
7864 | bpt->val_valid = 1; | |
7865 | ||
fe3f5fa8 VP |
7866 | if (bpt->type == bp_hardware_watchpoint || |
7867 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7868 | bpt->type == bp_access_watchpoint) |
7869 | { | |
fe3f5fa8 VP |
7870 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7871 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
0101ce28 | 7872 | |
fe3f5fa8 VP |
7873 | /* Hack around 'unused var' error for some targets here */ |
7874 | (void) mem_cnt, (void) i; | |
7875 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7876 | bpt->type, i + mem_cnt, other_type_used); | |
7877 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7878 | bp_watchpoint in the following condition */ | |
7879 | if (target_resources_ok < 0) | |
c5aa993b | 7880 | { |
fe3f5fa8 | 7881 | printf_filtered (_("\ |
c906108c | 7882 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 7883 | have been allocated for other watchpoints.\n"), bpt->number); |
fe3f5fa8 VP |
7884 | value_free_to_mark (mark); |
7885 | return; | |
c5aa993b JM |
7886 | } |
7887 | } | |
fe3f5fa8 VP |
7888 | |
7889 | select_frame (frame_find_by_id (saved_frame_id)); | |
7890 | value_free_to_mark (mark); | |
c906108c | 7891 | } |
0101ce28 | 7892 | |
b4c291bb KH |
7893 | if (bpt->enable_state != bp_permanent) |
7894 | bpt->enable_state = bp_enabled; | |
7895 | bpt->disposition = disposition; | |
74960c60 | 7896 | update_global_location_list (); |
b4c291bb KH |
7897 | breakpoints_changed (); |
7898 | ||
9a4105ab AC |
7899 | if (deprecated_modify_breakpoint_hook) |
7900 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7901 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7902 | } |
7903 | ||
fe3f5fa8 | 7904 | |
c906108c | 7905 | void |
fba45db2 | 7906 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7907 | { |
7908 | do_enable_breakpoint (bpt, bpt->disposition); | |
7909 | } | |
7910 | ||
7911 | /* The enable command enables the specified breakpoints (or all defined | |
7912 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7913 | in stopping the inferior. */ |
c906108c | 7914 | |
c906108c | 7915 | static void |
fba45db2 | 7916 | enable_command (char *args, int from_tty) |
c906108c | 7917 | { |
52f0bd74 | 7918 | struct breakpoint *bpt; |
c906108c SS |
7919 | if (args == 0) |
7920 | ALL_BREAKPOINTS (bpt) | |
7921 | switch (bpt->type) | |
c5aa993b JM |
7922 | { |
7923 | case bp_none: | |
8a3fe4f8 | 7924 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 7925 | bpt->number); |
c5aa993b JM |
7926 | continue; |
7927 | case bp_breakpoint: | |
7928 | case bp_catch_load: | |
7929 | case bp_catch_unload: | |
7930 | case bp_catch_fork: | |
7931 | case bp_catch_vfork: | |
7932 | case bp_catch_exec: | |
c5aa993b JM |
7933 | case bp_hardware_breakpoint: |
7934 | case bp_watchpoint: | |
7935 | case bp_hardware_watchpoint: | |
7936 | case bp_read_watchpoint: | |
7937 | case bp_access_watchpoint: | |
7938 | enable_breakpoint (bpt); | |
7939 | default: | |
7940 | continue; | |
7941 | } | |
0d381245 VP |
7942 | else if (strchr (args, '.')) |
7943 | { | |
7944 | struct bp_location *loc = find_location_by_number (args); | |
7945 | if (loc) | |
7946 | loc->enabled = 1; | |
74960c60 | 7947 | update_global_location_list (); |
0d381245 | 7948 | } |
c906108c SS |
7949 | else |
7950 | map_breakpoint_numbers (args, enable_breakpoint); | |
7951 | } | |
7952 | ||
7953 | static void | |
fba45db2 | 7954 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7955 | { |
b5de0fa7 | 7956 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7957 | } |
7958 | ||
c906108c | 7959 | static void |
fba45db2 | 7960 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7961 | { |
7962 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7963 | } | |
7964 | ||
7965 | static void | |
fba45db2 | 7966 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7967 | { |
b5de0fa7 | 7968 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7969 | } |
7970 | ||
c906108c | 7971 | static void |
fba45db2 | 7972 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7973 | { |
7974 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7975 | } | |
7976 | \f | |
fa8d40ab JJ |
7977 | static void |
7978 | set_breakpoint_cmd (char *args, int from_tty) | |
7979 | { | |
7980 | } | |
7981 | ||
7982 | static void | |
7983 | show_breakpoint_cmd (char *args, int from_tty) | |
7984 | { | |
7985 | } | |
7986 | ||
c906108c SS |
7987 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7988 | ||
7989 | struct symtabs_and_lines | |
fba45db2 | 7990 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7991 | { |
7992 | struct symtabs_and_lines sals; | |
7993 | if (string == 0) | |
8a3fe4f8 | 7994 | error (_("Empty line specification.")); |
c906108c SS |
7995 | if (default_breakpoint_valid) |
7996 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7997 | default_breakpoint_symtab, |
7998 | default_breakpoint_line, | |
68219205 | 7999 | (char ***) NULL, NULL); |
c906108c SS |
8000 | else |
8001 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8002 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8003 | if (*string) |
8a3fe4f8 | 8004 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8005 | return sals; |
8006 | } | |
8181d85f DJ |
8007 | |
8008 | /* Create and insert a raw software breakpoint at PC. Return an | |
8009 | identifier, which should be used to remove the breakpoint later. | |
8010 | In general, places which call this should be using something on the | |
8011 | breakpoint chain instead; this function should be eliminated | |
8012 | someday. */ | |
8013 | ||
8014 | void * | |
8015 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8016 | { | |
8017 | struct bp_target_info *bp_tgt; | |
8018 | ||
8019 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8020 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8021 | ||
8022 | bp_tgt->placed_address = pc; | |
8023 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8024 | { | |
8025 | /* Could not insert the breakpoint. */ | |
8026 | xfree (bp_tgt); | |
8027 | return NULL; | |
8028 | } | |
8029 | ||
8030 | return bp_tgt; | |
8031 | } | |
8032 | ||
8033 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8034 | ||
8035 | int | |
8036 | deprecated_remove_raw_breakpoint (void *bp) | |
8037 | { | |
8038 | struct bp_target_info *bp_tgt = bp; | |
8039 | int ret; | |
8040 | ||
8041 | ret = target_remove_breakpoint (bp_tgt); | |
8042 | xfree (bp_tgt); | |
8043 | ||
8044 | return ret; | |
8045 | } | |
8046 | ||
8047 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8048 | ||
8049 | static void *single_step_breakpoints[2]; | |
8050 | ||
8051 | /* Create and insert a breakpoint for software single step. */ | |
8052 | ||
8053 | void | |
8054 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8055 | { | |
8056 | void **bpt_p; | |
8057 | ||
8058 | if (single_step_breakpoints[0] == NULL) | |
8059 | bpt_p = &single_step_breakpoints[0]; | |
8060 | else | |
8061 | { | |
8062 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8063 | bpt_p = &single_step_breakpoints[1]; | |
8064 | } | |
8065 | ||
8066 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8067 | to only create the breakpoints once, and actually put them on the | |
8068 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8069 | adjust the addresses each time they were needed. Doing this requires | |
8070 | corresponding changes elsewhere where single step breakpoints are | |
8071 | handled, however. So, for now, we use this. */ | |
8072 | ||
8073 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8074 | if (*bpt_p == NULL) | |
1893a4c0 | 8075 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8076 | paddr_nz (next_pc)); |
8077 | } | |
8078 | ||
8079 | /* Remove and delete any breakpoints used for software single step. */ | |
8080 | ||
8081 | void | |
8082 | remove_single_step_breakpoints (void) | |
8083 | { | |
8084 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8085 | ||
8086 | /* See insert_single_step_breakpoint for more about this deprecated | |
8087 | call. */ | |
8088 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8089 | single_step_breakpoints[0] = NULL; | |
8090 | ||
8091 | if (single_step_breakpoints[1] != NULL) | |
8092 | { | |
8093 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8094 | single_step_breakpoints[1] = NULL; | |
8095 | } | |
8096 | } | |
8097 | ||
1aafd4da UW |
8098 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8099 | ||
8100 | static int | |
8101 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8102 | { | |
8103 | int i; | |
8104 | ||
8105 | for (i = 0; i < 2; i++) | |
8106 | { | |
8107 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8108 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8109 | return 1; | |
8110 | } | |
8111 | ||
8112 | return 0; | |
8113 | } | |
8114 | ||
74960c60 VP |
8115 | int breakpoints_always_inserted_mode (void) |
8116 | { | |
8117 | return always_inserted_mode; | |
8118 | } | |
8119 | ||
c906108c | 8120 | \f |
31e2b00f AS |
8121 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8122 | It is defined as a macro to prevent duplication. | |
8123 | COMMAND should be a string constant containing the name of the command. */ | |
8124 | #define BREAK_ARGS_HELP(command) \ | |
8125 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8126 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8127 | If a line number is specified, break at start of code for that line.\n\ | |
8128 | If a function is specified, break at start of code for that function.\n\ | |
8129 | If an address is specified, break at that exact address.\n\ | |
8130 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8131 | This is useful for breaking on return to a stack frame.\n\ | |
8132 | \n\ | |
8133 | THREADNUM is the number from \"info threads\".\n\ | |
8134 | CONDITION is a boolean expression.\n\ | |
8135 | \n\ | |
8136 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8137 | \n\ | |
8138 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8139 | ||
c906108c | 8140 | void |
fba45db2 | 8141 | _initialize_breakpoint (void) |
c906108c | 8142 | { |
fa8d40ab JJ |
8143 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8144 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8145 | struct cmd_list_element *c; |
8146 | ||
84acb35a | 8147 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8148 | |
c906108c SS |
8149 | breakpoint_chain = 0; |
8150 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8151 | before a breakpoint is set. */ | |
8152 | breakpoint_count = 0; | |
8153 | ||
1bedd215 AC |
8154 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8155 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8156 | Usage is `ignore N COUNT'.")); | |
c906108c | 8157 | if (xdb_commands) |
c5aa993b | 8158 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8159 | |
1bedd215 AC |
8160 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8161 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8162 | Give breakpoint number as argument after \"commands\".\n\ |
8163 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8164 | The commands themselves follow starting on the next line.\n\ | |
8165 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8166 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8167 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8168 | |
1bedd215 AC |
8169 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8170 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8171 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8172 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8173 | |
1bedd215 | 8174 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8175 | Set a temporary breakpoint.\n\ |
c906108c SS |
8176 | Like \"break\" except the breakpoint is only temporary,\n\ |
8177 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8178 | by using \"enable delete\" on the breakpoint number.\n\ |
8179 | \n" | |
8180 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8181 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8182 | |
1bedd215 | 8183 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8184 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8185 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8186 | some target hardware may not have this support.\n\ |
8187 | \n" | |
8188 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8189 | set_cmd_completer (c, location_completer); |
c906108c | 8190 | |
1bedd215 | 8191 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8192 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8193 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8194 | so it will be deleted when hit.\n\ |
8195 | \n" | |
8196 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8197 | set_cmd_completer (c, location_completer); |
c906108c | 8198 | |
1bedd215 AC |
8199 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8200 | Enable some breakpoints.\n\ | |
c906108c SS |
8201 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8202 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8203 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8204 | With a subcommand you can enable temporarily."), |
c906108c SS |
8205 | &enablelist, "enable ", 1, &cmdlist); |
8206 | if (xdb_commands) | |
1bedd215 AC |
8207 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8208 | Enable some breakpoints.\n\ | |
c906108c SS |
8209 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8210 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8211 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8212 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8213 | |
8214 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8215 | ||
1bedd215 AC |
8216 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8217 | Enable some breakpoints.\n\ | |
c906108c SS |
8218 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8219 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8220 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8221 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8222 | |
1a966eab AC |
8223 | add_cmd ("once", no_class, enable_once_command, _("\ |
8224 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8225 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8226 | &enablebreaklist); |
8227 | ||
1a966eab AC |
8228 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8229 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8230 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8231 | &enablebreaklist); |
8232 | ||
1a966eab AC |
8233 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8234 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8235 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8236 | &enablelist); |
8237 | ||
1a966eab AC |
8238 | add_cmd ("once", no_class, enable_once_command, _("\ |
8239 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8240 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8241 | &enablelist); |
8242 | ||
1bedd215 AC |
8243 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8244 | Disable some breakpoints.\n\ | |
c906108c SS |
8245 | Arguments are breakpoint numbers with spaces in between.\n\ |
8246 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8247 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8248 | &disablelist, "disable ", 1, &cmdlist); |
8249 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8250 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8251 | if (xdb_commands) | |
1bedd215 AC |
8252 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8253 | Disable some breakpoints.\n\ | |
c906108c SS |
8254 | Arguments are breakpoint numbers with spaces in between.\n\ |
8255 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8256 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8257 | |
1a966eab AC |
8258 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8259 | Disable some breakpoints.\n\ | |
c906108c SS |
8260 | Arguments are breakpoint numbers with spaces in between.\n\ |
8261 | To disable all breakpoints, give no argument.\n\ | |
8262 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8263 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8264 | &disablelist); |
8265 | ||
1bedd215 AC |
8266 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8267 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8268 | Arguments are breakpoint numbers with spaces in between.\n\ |
8269 | To delete all breakpoints, give no argument.\n\ | |
8270 | \n\ | |
8271 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8272 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8273 | &deletelist, "delete ", 1, &cmdlist); |
8274 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8275 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8276 | if (xdb_commands) |
1bedd215 AC |
8277 | add_com ("db", class_breakpoint, delete_command, _("\ |
8278 | Delete some breakpoints.\n\ | |
c906108c | 8279 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8280 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8281 | |
1a966eab AC |
8282 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8283 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8284 | Arguments are breakpoint numbers with spaces in between.\n\ |
8285 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8286 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8287 | &deletelist); |
8288 | ||
1bedd215 AC |
8289 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8290 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8291 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8292 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8293 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8294 | If an address is specified, breakpoints at that address are cleared.\n\ |
8295 | \n\ | |
8296 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8297 | is executing in.\n\ |
8298 | \n\ | |
1bedd215 | 8299 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8300 | |
1bedd215 | 8301 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8302 | Set breakpoint at specified line or function.\n" |
8303 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8304 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8305 | |
c906108c SS |
8306 | add_com_alias ("b", "break", class_run, 1); |
8307 | add_com_alias ("br", "break", class_run, 1); | |
8308 | add_com_alias ("bre", "break", class_run, 1); | |
8309 | add_com_alias ("brea", "break", class_run, 1); | |
8310 | ||
502fd408 | 8311 | if (xdb_commands) |
c906108c SS |
8312 | { |
8313 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8314 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8315 | } |
8316 | ||
8317 | if (dbx_commands) | |
8318 | { | |
1bedd215 AC |
8319 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8320 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8321 | &stoplist, "stop ", 1, &cmdlist); |
8322 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8323 | _("Break in function or address."), &stoplist); |
c5aa993b | 8324 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8325 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8326 | add_com ("status", class_info, breakpoints_info, _("\ |
8327 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8328 | The \"Type\" column indicates one of:\n\ |
8329 | \tbreakpoint - normal breakpoint\n\ | |
8330 | \twatchpoint - watchpoint\n\ | |
8331 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8332 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8333 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8334 | address and file/line number respectively.\n\ |
8335 | \n\ | |
8336 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8337 | are set to the address of the last breakpoint listed unless the command\n\ |
8338 | is prefixed with \"server \".\n\n\ | |
c906108c | 8339 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8340 | breakpoint set.")); |
c906108c SS |
8341 | } |
8342 | ||
1bedd215 AC |
8343 | add_info ("breakpoints", breakpoints_info, _("\ |
8344 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8345 | The \"Type\" column indicates one of:\n\ |
8346 | \tbreakpoint - normal breakpoint\n\ | |
8347 | \twatchpoint - watchpoint\n\ | |
8348 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8349 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8350 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8351 | address and file/line number respectively.\n\ |
8352 | \n\ | |
8353 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8354 | are set to the address of the last breakpoint listed unless the command\n\ |
8355 | is prefixed with \"server \".\n\n\ | |
c906108c | 8356 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8357 | breakpoint set.")); |
c906108c SS |
8358 | |
8359 | if (xdb_commands) | |
1bedd215 AC |
8360 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8361 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8362 | The \"Type\" column indicates one of:\n\ |
8363 | \tbreakpoint - normal breakpoint\n\ | |
8364 | \twatchpoint - watchpoint\n\ | |
8365 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8366 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8367 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8368 | address and file/line number respectively.\n\ |
8369 | \n\ | |
8370 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8371 | are set to the address of the last breakpoint listed unless the command\n\ |
8372 | is prefixed with \"server \".\n\n\ | |
c906108c | 8373 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8374 | breakpoint set.")); |
c906108c | 8375 | |
1a966eab AC |
8376 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8377 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8378 | The \"Type\" column indicates one of:\n\ |
8379 | \tbreakpoint - normal breakpoint\n\ | |
8380 | \twatchpoint - watchpoint\n\ | |
8381 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8382 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8383 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8384 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8385 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8386 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8387 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8388 | address and file/line number respectively.\n\ |
8389 | \n\ | |
8390 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8391 | are set to the address of the last breakpoint listed unless the command\n\ |
8392 | is prefixed with \"server \".\n\n\ | |
c906108c | 8393 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8394 | breakpoint set."), |
c906108c SS |
8395 | &maintenanceinfolist); |
8396 | ||
1bedd215 AC |
8397 | add_com ("catch", class_breakpoint, catch_command, _("\ |
8398 | Set catchpoints to catch events.\n\ | |
c906108c SS |
8399 | Raised signals may be caught:\n\ |
8400 | \tcatch signal - all signals\n\ | |
8401 | \tcatch signal <signame> - a particular signal\n\ | |
8402 | Raised exceptions may be caught:\n\ | |
8403 | \tcatch throw - all exceptions, when thrown\n\ | |
8404 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
8405 | \tcatch catch - all exceptions, when caught\n\ | |
8406 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
8407 | Thread or process events may be caught:\n\ | |
8408 | \tcatch thread_start - any threads, just after creation\n\ | |
8409 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8410 | \tcatch thread_join - any threads, just after joins\n\ | |
8411 | Process events may be caught:\n\ | |
8412 | \tcatch start - any processes, just after creation\n\ | |
8413 | \tcatch exit - any processes, just before expiration\n\ | |
8414 | \tcatch fork - calls to fork()\n\ | |
8415 | \tcatch vfork - calls to vfork()\n\ | |
8416 | \tcatch exec - calls to exec()\n\ | |
8417 | Dynamically-linked library events may be caught:\n\ | |
8418 | \tcatch load - loads of any library\n\ | |
8419 | \tcatch load <libname> - loads of a particular library\n\ | |
8420 | \tcatch unload - unloads of any library\n\ | |
8421 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8422 | The act of your program's execution stopping may also be caught:\n\ | |
8423 | \tcatch stop\n\n\ | |
8424 | C++ exceptions may be caught:\n\ | |
8425 | \tcatch throw - all exceptions, when thrown\n\ | |
8426 | \tcatch catch - all exceptions, when caught\n\ | |
f7f9143b JB |
8427 | Ada exceptions may be caught:\n\ |
8428 | \tcatch exception - all exceptions, when raised\n\ | |
8429 | \tcatch exception <name> - a particular exception, when raised\n\ | |
8430 | \tcatch exception unhandled - all unhandled exceptions, when raised\n\ | |
8431 | \tcatch assert - all failed assertions, when raised\n\ | |
c906108c SS |
8432 | \n\ |
8433 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8434 | after a fork or vfork is caught.\n\n\ | |
1bedd215 | 8435 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.")); |
c5aa993b | 8436 | |
1bedd215 AC |
8437 | add_com ("tcatch", class_breakpoint, tcatch_command, _("\ |
8438 | Set temporary catchpoints to catch events.\n\ | |
c906108c SS |
8439 | Args like \"catch\" command.\n\ |
8440 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8441 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
1bedd215 | 8442 | by using \"enable delete\" on the catchpoint number.")); |
c5aa993b | 8443 | |
1bedd215 AC |
8444 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8445 | Set a watchpoint for an expression.\n\ | |
c906108c | 8446 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8447 | an expression changes.")); |
5ba2abeb | 8448 | set_cmd_completer (c, location_completer); |
c906108c | 8449 | |
1bedd215 AC |
8450 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8451 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8452 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8453 | an expression is read.")); |
5ba2abeb | 8454 | set_cmd_completer (c, location_completer); |
c906108c | 8455 | |
1bedd215 AC |
8456 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8457 | Set a watchpoint for an expression.\n\ | |
c906108c | 8458 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8459 | an expression is either read or written.")); |
5ba2abeb | 8460 | set_cmd_completer (c, location_completer); |
c906108c SS |
8461 | |
8462 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8463 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8464 | |
8465 | ||
920d2a44 AC |
8466 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8467 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8468 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8469 | &can_use_hw_watchpoints, _("\ | |
8470 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8471 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8472 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8473 | such is available. (However, any hardware watchpoints that were\n\ | |
8474 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8475 | hardware.)"), |
8476 | NULL, | |
920d2a44 | 8477 | show_can_use_hw_watchpoints, |
85c07804 | 8478 | &setlist, &showlist); |
c906108c SS |
8479 | |
8480 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8481 | |
1bedd215 | 8482 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8483 | Breakpoint specific settings\n\ |
8484 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8485 | pending breakpoint behavior"), |
fa8d40ab JJ |
8486 | &breakpoint_set_cmdlist, "set breakpoint ", |
8487 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8488 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8489 | Breakpoint specific settings\n\ |
8490 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8491 | pending breakpoint behavior"), |
fa8d40ab JJ |
8492 | &breakpoint_show_cmdlist, "show breakpoint ", |
8493 | 0/*allow-unknown*/, &showlist); | |
8494 | ||
7915a72c AC |
8495 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8496 | &pending_break_support, _("\ | |
8497 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8498 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8499 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8500 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8501 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8502 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8503 | NULL, |
920d2a44 | 8504 | show_pending_break_support, |
6e1d7d6c AC |
8505 | &breakpoint_set_cmdlist, |
8506 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8507 | |
8508 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8509 | |
8510 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8511 | &automatic_hardware_breakpoints, _("\ | |
8512 | Set automatic usage of hardware breakpoints."), _("\ | |
8513 | Show automatic usage of hardware breakpoints."), _("\ | |
8514 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8515 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8516 | a warning will be emitted for such breakpoints."), | |
8517 | NULL, | |
8518 | show_automatic_hardware_breakpoints, | |
8519 | &breakpoint_set_cmdlist, | |
8520 | &breakpoint_show_cmdlist); | |
74960c60 VP |
8521 | |
8522 | add_setshow_boolean_cmd ("always-inserted", class_support, | |
8523 | &always_inserted_mode, _("\ | |
8524 | Set mode for inserting breakpoints."), _("\ | |
8525 | Show mode for inserting breakpoints."), _("\ | |
8526 | When this mode is off (which is the default), breakpoints are inserted in\n\ | |
8527 | inferior when it is resumed, and removed when execution stops. When this\n\ | |
8528 | mode is on, breakpoints are inserted immediately and removed only when\n\ | |
8529 | the user deletes the breakpoint."), | |
8530 | NULL, | |
8531 | &show_always_inserted_mode, | |
8532 | &breakpoint_set_cmdlist, | |
8533 | &breakpoint_show_cmdlist); | |
765dc015 VP |
8534 | |
8535 | automatic_hardware_breakpoints = 1; | |
c906108c | 8536 | } |