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) | |
2f069f6f JB |
604 | { |
605 | struct bp_location *loc = b->loc; | |
606 | for (; loc; loc = loc->next) | |
607 | { | |
608 | if (loc->cond) | |
609 | { | |
610 | xfree (loc->cond); | |
611 | loc->cond = 0; | |
612 | } | |
613 | } | |
614 | if (b->cond_string != NULL) | |
615 | xfree (b->cond_string); | |
c906108c | 616 | |
2f069f6f JB |
617 | if (*p == 0) |
618 | { | |
619 | b->cond_string = NULL; | |
620 | if (from_tty) | |
621 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
622 | } | |
623 | else | |
624 | { | |
625 | arg = p; | |
626 | /* I don't know if it matters whether this is the string the user | |
627 | typed in or the decompiled expression. */ | |
628 | b->cond_string = savestring (arg, strlen (arg)); | |
629 | b->condition_not_parsed = 0; | |
630 | for (loc = b->loc; loc; loc = loc->next) | |
631 | { | |
632 | arg = p; | |
633 | loc->cond = | |
634 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
635 | if (*arg) | |
636 | error (_("Junk at end of expression")); | |
637 | } | |
638 | } | |
639 | breakpoints_changed (); | |
640 | breakpoint_modify_event (b->number); | |
641 | return; | |
642 | } | |
c906108c | 643 | |
8a3fe4f8 | 644 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
645 | } |
646 | ||
c906108c | 647 | static void |
fba45db2 | 648 | commands_command (char *arg, int from_tty) |
c906108c | 649 | { |
52f0bd74 | 650 | struct breakpoint *b; |
c906108c | 651 | char *p; |
52f0bd74 | 652 | int bnum; |
c906108c SS |
653 | struct command_line *l; |
654 | ||
655 | /* If we allowed this, we would have problems with when to | |
656 | free the storage, if we change the commands currently | |
657 | being read from. */ | |
658 | ||
659 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 660 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
661 | |
662 | p = arg; | |
663 | bnum = get_number (&p); | |
5c44784c | 664 | |
c906108c | 665 | if (p && *p) |
8a3fe4f8 | 666 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 667 | |
c906108c SS |
668 | ALL_BREAKPOINTS (b) |
669 | if (b->number == bnum) | |
9ebf4acf AC |
670 | { |
671 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
672 | bnum); | |
673 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
674 | l = read_command_lines (tmpbuf, from_tty); | |
675 | do_cleanups (cleanups); | |
676 | free_command_lines (&b->commands); | |
677 | b->commands = l; | |
678 | breakpoints_changed (); | |
679 | breakpoint_modify_event (b->number); | |
680 | return; | |
c5aa993b | 681 | } |
8a3fe4f8 | 682 | error (_("No breakpoint number %d."), bnum); |
c906108c | 683 | } |
40c03ae8 EZ |
684 | |
685 | /* Like commands_command, but instead of reading the commands from | |
686 | input stream, takes them from an already parsed command structure. | |
687 | ||
688 | This is used by cli-script.c to DTRT with breakpoint commands | |
689 | that are part of if and while bodies. */ | |
690 | enum command_control_type | |
691 | commands_from_control_command (char *arg, struct command_line *cmd) | |
692 | { | |
693 | struct breakpoint *b; | |
694 | char *p; | |
695 | int bnum; | |
696 | ||
697 | /* If we allowed this, we would have problems with when to | |
698 | free the storage, if we change the commands currently | |
699 | being read from. */ | |
700 | ||
701 | if (executing_breakpoint_commands) | |
702 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
703 | ||
704 | /* An empty string for the breakpoint number means the last | |
705 | breakpoint, but get_number expects a NULL pointer. */ | |
706 | if (arg && !*arg) | |
707 | p = NULL; | |
708 | else | |
709 | p = arg; | |
710 | bnum = get_number (&p); | |
711 | ||
712 | if (p && *p) | |
713 | error (_("Unexpected extra arguments following breakpoint number.")); | |
714 | ||
715 | ALL_BREAKPOINTS (b) | |
716 | if (b->number == bnum) | |
717 | { | |
718 | free_command_lines (&b->commands); | |
719 | if (cmd->body_count != 1) | |
720 | error (_("Invalid \"commands\" block structure.")); | |
721 | /* We need to copy the commands because if/while will free the | |
722 | list after it finishes execution. */ | |
723 | b->commands = copy_command_lines (cmd->body_list[0]); | |
724 | breakpoints_changed (); | |
725 | breakpoint_modify_event (b->number); | |
726 | return simple_control; | |
2f069f6f | 727 | } |
40c03ae8 EZ |
728 | error (_("No breakpoint number %d."), bnum); |
729 | } | |
c906108c | 730 | \f |
8defab1a DJ |
731 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
732 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 733 | |
8defab1a DJ |
734 | void |
735 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 736 | { |
8defab1a | 737 | struct bp_location *b; |
c906108c SS |
738 | CORE_ADDR bp_addr = 0; |
739 | int bp_size = 0; | |
8defab1a | 740 | int bptoffset = 0; |
c5aa993b | 741 | |
ffce0d52 | 742 | ALL_BP_LOCATIONS (b) |
c5aa993b | 743 | { |
ffce0d52 | 744 | if (b->owner->type == bp_none) |
8a3fe4f8 | 745 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
746 | b->owner->number); |
747 | ||
748 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 749 | continue; |
ffce0d52 | 750 | if (!b->inserted) |
c5aa993b JM |
751 | continue; |
752 | /* Addresses and length of the part of the breakpoint that | |
753 | we need to copy. */ | |
8181d85f DJ |
754 | bp_addr = b->target_info.placed_address; |
755 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 756 | if (bp_size == 0) |
8181d85f | 757 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 758 | continue; |
8defab1a | 759 | |
c5aa993b JM |
760 | if (bp_addr + bp_size <= memaddr) |
761 | /* The breakpoint is entirely before the chunk of memory we | |
762 | are reading. */ | |
763 | continue; | |
8defab1a | 764 | |
c5aa993b JM |
765 | if (bp_addr >= memaddr + len) |
766 | /* The breakpoint is entirely after the chunk of memory we are | |
767 | reading. */ | |
768 | continue; | |
c5aa993b | 769 | |
8defab1a DJ |
770 | /* Offset within shadow_contents. */ |
771 | if (bp_addr < memaddr) | |
772 | { | |
773 | /* Only copy the second part of the breakpoint. */ | |
774 | bp_size -= memaddr - bp_addr; | |
775 | bptoffset = memaddr - bp_addr; | |
776 | bp_addr = memaddr; | |
777 | } | |
c5aa993b | 778 | |
8defab1a DJ |
779 | if (bp_addr + bp_size > memaddr + len) |
780 | { | |
781 | /* Only copy the first part of the breakpoint. */ | |
782 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
783 | } | |
c5aa993b | 784 | |
8defab1a DJ |
785 | memcpy (buf + bp_addr - memaddr, |
786 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 787 | } |
c906108c | 788 | } |
c906108c | 789 | \f |
c5aa993b | 790 | |
687595f9 | 791 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 792 | static void |
687595f9 DJ |
793 | insert_catchpoint (struct ui_out *uo, void *args) |
794 | { | |
795 | struct breakpoint *b = (struct breakpoint *) args; | |
796 | int val = -1; | |
797 | ||
798 | switch (b->type) | |
799 | { | |
800 | case bp_catch_fork: | |
fa113d1a | 801 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
802 | break; |
803 | case bp_catch_vfork: | |
fa113d1a | 804 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
805 | break; |
806 | case bp_catch_exec: | |
fa113d1a | 807 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
808 | break; |
809 | default: | |
e2e0b3e5 | 810 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
687595f9 DJ |
811 | break; |
812 | } | |
687595f9 DJ |
813 | } |
814 | ||
a5606eee VP |
815 | static int |
816 | is_hardware_watchpoint (struct breakpoint *bpt) | |
817 | { | |
818 | return (bpt->type == bp_hardware_watchpoint | |
819 | || bpt->type == bp_read_watchpoint | |
820 | || bpt->type == bp_access_watchpoint); | |
821 | } | |
7270d8f2 | 822 | |
fa4727a6 DJ |
823 | /* Find the current value of a watchpoint on EXP. Return the value in |
824 | *VALP and *RESULTP and the chain of intermediate and final values | |
825 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
826 | not need them. | |
827 | ||
828 | If an error occurs while evaluating the expression, *RESULTP will | |
829 | be set to NULL. *RESULTP may be a lazy value, if the result could | |
830 | not be read from memory. It is used to determine whether a value | |
831 | is user-specified (we should watch the whole value) or intermediate | |
832 | (we should watch only the bit used to locate the final value). | |
833 | ||
834 | If the final value, or any intermediate value, could not be read | |
835 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
836 | set to any referenced values. *VALP will never be a lazy value. | |
837 | This is the value which we store in struct breakpoint. | |
838 | ||
839 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
840 | value chain. The caller must free the values individually. If | |
841 | VAL_CHAIN is NULL, all generated values will be left on the value | |
842 | chain. */ | |
843 | ||
844 | static void | |
845 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
846 | struct value **resultp, struct value **val_chain) | |
847 | { | |
848 | struct value *mark, *new_mark, *result; | |
849 | ||
850 | *valp = NULL; | |
851 | if (resultp) | |
852 | *resultp = NULL; | |
853 | if (val_chain) | |
854 | *val_chain = NULL; | |
855 | ||
856 | /* Evaluate the expression. */ | |
857 | mark = value_mark (); | |
858 | result = NULL; | |
859 | gdb_evaluate_expression (exp, &result); | |
860 | new_mark = value_mark (); | |
861 | if (mark == new_mark) | |
862 | return; | |
863 | if (resultp) | |
864 | *resultp = result; | |
865 | ||
866 | /* Make sure it's not lazy, so that after the target stops again we | |
867 | have a non-lazy previous value to compare with. */ | |
868 | if (result != NULL | |
869 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
870 | *valp = result; | |
871 | ||
872 | if (val_chain) | |
873 | { | |
874 | /* Return the chain of intermediate values. We use this to | |
875 | decide which addresses to watch. */ | |
876 | *val_chain = new_mark; | |
877 | value_release_to_mark (mark); | |
878 | } | |
879 | } | |
880 | ||
881 | /* Assuming that B is a hardware watchpoint: | |
a5606eee VP |
882 | - Reparse watchpoint expression, is REPARSE is non-zero |
883 | - Evaluate expression and store the result in B->val | |
884 | - Update the list of values that must be watched in B->loc. | |
885 | ||
886 | If the watchpoint is disabled, do nothing. If this is | |
887 | local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 888 | static void |
a5606eee | 889 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 890 | { |
a5606eee | 891 | int within_current_scope; |
a5606eee VP |
892 | struct frame_id saved_frame_id; |
893 | struct bp_location *loc; | |
894 | bpstat bs; | |
895 | ||
74960c60 VP |
896 | /* We don't free locations. They are stored in |
897 | bp_location_chain and update_global_locations will | |
898 | eventually delete them and remove breakpoints if | |
899 | needed. */ | |
a5606eee VP |
900 | b->loc = NULL; |
901 | ||
902 | if (b->disposition == disp_del_at_next_stop) | |
903 | return; | |
904 | ||
905 | /* Save the current frame's ID so we can restore it after | |
906 | evaluating the watchpoint expression on its own frame. */ | |
907 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
908 | took a frame parameter, so that we didn't have to change the | |
909 | selected frame. */ | |
910 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
911 | ||
912 | /* Determine if the watchpoint is within scope. */ | |
913 | if (b->exp_valid_block == NULL) | |
914 | within_current_scope = 1; | |
915 | else | |
916 | { | |
917 | struct frame_info *fi; | |
918 | fi = frame_find_by_id (b->watchpoint_frame); | |
919 | within_current_scope = (fi != NULL); | |
920 | if (within_current_scope) | |
921 | select_frame (fi); | |
922 | } | |
923 | ||
924 | if (within_current_scope && reparse) | |
925 | { | |
926 | char *s; | |
927 | if (b->exp) | |
928 | { | |
929 | xfree (b->exp); | |
930 | b->exp = NULL; | |
931 | } | |
932 | s = b->exp_string; | |
933 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
934 | /* If the meaning of expression itself changed, the old value is | |
935 | no longer relevant. We don't want to report a watchpoint hit | |
936 | to the user when the old value and the new value may actually | |
937 | be completely different objects. */ | |
938 | value_free (b->val); | |
fa4727a6 DJ |
939 | b->val = NULL; |
940 | b->val_valid = 0; | |
a5606eee | 941 | } |
a5606eee VP |
942 | |
943 | /* If we failed to parse the expression, for example because | |
944 | it refers to a global variable in a not-yet-loaded shared library, | |
945 | don't try to insert watchpoint. We don't automatically delete | |
946 | such watchpoint, though, since failure to parse expression | |
947 | is different from out-of-scope watchpoint. */ | |
948 | if (within_current_scope && b->exp) | |
949 | { | |
fa4727a6 | 950 | struct value *val_chain, *v, *result, *next; |
a5606eee | 951 | |
fa4727a6 | 952 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 953 | |
a5606eee VP |
954 | /* Avoid setting b->val if it's already set. The meaning of |
955 | b->val is 'the last value' user saw, and we should update | |
956 | it only if we reported that last value to user. As it | |
957 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
958 | if (!b->val_valid) |
959 | { | |
960 | b->val = v; | |
961 | b->val_valid = 1; | |
962 | } | |
a5606eee VP |
963 | |
964 | /* Look at each value on the value chain. */ | |
fa4727a6 | 965 | for (v = val_chain; v; v = next) |
a5606eee VP |
966 | { |
967 | /* If it's a memory location, and GDB actually needed | |
968 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
969 | must watch it. If the first value returned is |
970 | still lazy, that means an error occurred reading it; | |
971 | watch it anyway in case it becomes readable. */ | |
a5606eee | 972 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 973 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
974 | { |
975 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 976 | |
a5606eee VP |
977 | /* We only watch structs and arrays if user asked |
978 | for it explicitly, never if they just happen to | |
979 | appear in the middle of some value chain. */ | |
fa4727a6 | 980 | if (v == result |
a5606eee VP |
981 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
982 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
983 | { | |
984 | CORE_ADDR addr; | |
985 | int len, type; | |
986 | struct bp_location *loc, **tmp; | |
987 | ||
988 | addr = VALUE_ADDRESS (v) + value_offset (v); | |
989 | len = TYPE_LENGTH (value_type (v)); | |
990 | type = hw_write; | |
991 | if (b->type == bp_read_watchpoint) | |
992 | type = hw_read; | |
993 | else if (b->type == bp_access_watchpoint) | |
994 | type = hw_access; | |
995 | ||
996 | loc = allocate_bp_location (b, bp_hardware_watchpoint); | |
997 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
998 | ; | |
999 | *tmp = loc; | |
1000 | loc->address = addr; | |
1001 | loc->length = len; | |
1002 | loc->watchpoint_type = type; | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | next = value_next (v); | |
1007 | if (v != b->val) | |
1008 | value_free (v); | |
1009 | } | |
1010 | ||
2ec93238 MK |
1011 | /* We just regenerated the list of breakpoint locations. |
1012 | The new location does not have its condition field set to anything | |
1013 | and therefore, we must always reparse the cond_string, independently | |
1014 | of the value of the reparse flag. */ | |
1015 | if (b->cond_string != NULL) | |
a5606eee VP |
1016 | { |
1017 | char *s = b->cond_string; | |
a5606eee VP |
1018 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1019 | } | |
1020 | } | |
1021 | else if (!within_current_scope) | |
7270d8f2 | 1022 | { |
a5606eee VP |
1023 | printf_filtered (_("\ |
1024 | Hardware watchpoint %d deleted because the program has left the block \n\ | |
1025 | in which its expression is valid.\n"), | |
1026 | b->number); | |
1027 | if (b->related_breakpoint) | |
1028 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1029 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1030 | } |
a5606eee VP |
1031 | |
1032 | /* Restore the selected frame. */ | |
1033 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1034 | } |
1035 | ||
a5606eee | 1036 | |
74960c60 VP |
1037 | /* Returns 1 iff breakpoint location should be |
1038 | inserted in the inferior. */ | |
1039 | static int | |
1040 | should_be_inserted (struct bp_location *bpt) | |
1041 | { | |
1042 | if (!breakpoint_enabled (bpt->owner)) | |
1043 | return 0; | |
1044 | ||
1045 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1046 | return 0; | |
1047 | ||
1048 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1049 | return 0; | |
1050 | ||
1051 | return 1; | |
1052 | } | |
1053 | ||
879bfdc2 DJ |
1054 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1055 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
1056 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
1057 | ||
1058 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1059 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1060 | static int |
879bfdc2 | 1061 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
1062 | struct ui_file *tmp_error_stream, |
1063 | int *disabled_breaks, int *process_warning, | |
1064 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
1065 | { |
1066 | int val = 0; | |
1067 | ||
74960c60 | 1068 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1069 | return 0; |
1070 | ||
8181d85f DJ |
1071 | /* Initialize the target-specific information. */ |
1072 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1073 | bpt->target_info.placed_address = bpt->address; | |
1074 | ||
879bfdc2 DJ |
1075 | if (bpt->loc_type == bp_loc_software_breakpoint |
1076 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1077 | { | |
765dc015 VP |
1078 | if (bpt->owner->type != bp_hardware_breakpoint) |
1079 | { | |
1080 | /* If the explicitly specified breakpoint type | |
1081 | is not hardware breakpoint, check the memory map to see | |
1082 | if the breakpoint address is in read only memory or not. | |
1083 | Two important cases are: | |
1084 | - location type is not hardware breakpoint, memory | |
1085 | is readonly. We change the type of the location to | |
1086 | hardware breakpoint. | |
1087 | - location type is hardware breakpoint, memory is read-write. | |
1088 | This means we've previously made the location hardware one, but | |
1089 | then the memory map changed, so we undo. | |
1090 | ||
1091 | When breakpoints are removed, remove_breakpoints will | |
1092 | use location types we've just set here, the only possible | |
1093 | problem is that memory map has changed during running program, | |
1094 | but it's not going to work anyway with current gdb. */ | |
1095 | struct mem_region *mr | |
1096 | = lookup_mem_region (bpt->target_info.placed_address); | |
1097 | ||
1098 | if (mr) | |
1099 | { | |
1100 | if (automatic_hardware_breakpoints) | |
1101 | { | |
1102 | int changed = 0; | |
1103 | enum bp_loc_type new_type; | |
1104 | ||
1105 | if (mr->attrib.mode != MEM_RW) | |
1106 | new_type = bp_loc_hardware_breakpoint; | |
1107 | else | |
1108 | new_type = bp_loc_software_breakpoint; | |
1109 | ||
1110 | if (new_type != bpt->loc_type) | |
1111 | { | |
1112 | static int said = 0; | |
1113 | bpt->loc_type = new_type; | |
1114 | if (!said) | |
1115 | { | |
1116 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1117 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1118 | said = 1; |
1119 | } | |
1120 | } | |
1121 | } | |
1122 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1123 | && mr->attrib.mode != MEM_RW) | |
1124 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1125 | paddr (bpt->address)); | |
1126 | } | |
1127 | } | |
1128 | ||
879bfdc2 DJ |
1129 | /* First check to see if we have to handle an overlay. */ |
1130 | if (overlay_debugging == ovly_off | |
1131 | || bpt->section == NULL | |
1132 | || !(section_is_overlay (bpt->section))) | |
1133 | { | |
1134 | /* No overlay handling: just set the breakpoint. */ | |
1135 | ||
1136 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1137 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1138 | else |
8181d85f | 1139 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1140 | } |
1141 | else | |
1142 | { | |
1143 | /* This breakpoint is in an overlay section. | |
1144 | Shall we set a breakpoint at the LMA? */ | |
1145 | if (!overlay_events_enabled) | |
1146 | { | |
1147 | /* Yes -- overlay event support is not active, | |
1148 | so we must try to set a breakpoint at the LMA. | |
1149 | This will not work for a hardware breakpoint. */ | |
1150 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1151 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1152 | bpt->owner->number); |
1153 | else | |
1154 | { | |
1155 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1156 | bpt->section); | |
1157 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1158 | bpt->overlay_target_info = bpt->target_info; |
1159 | bpt->overlay_target_info.placed_address = addr; | |
1160 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
1161 | if (val != 0) |
1162 | fprintf_unfiltered (tmp_error_stream, | |
1163 | "Overlay breakpoint %d failed: in ROM?", | |
1164 | bpt->owner->number); | |
1165 | } | |
1166 | } | |
1167 | /* Shall we set a breakpoint at the VMA? */ | |
1168 | if (section_is_mapped (bpt->section)) | |
1169 | { | |
1170 | /* Yes. This overlay section is mapped into memory. */ | |
1171 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1172 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1173 | else |
8181d85f | 1174 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1175 | } |
1176 | else | |
1177 | { | |
1178 | /* No. This breakpoint will not be inserted. | |
1179 | No error, but do not mark the bp as 'inserted'. */ | |
1180 | return 0; | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | if (val) | |
1185 | { | |
1186 | /* Can't set the breakpoint. */ | |
9bbf65bb | 1187 | if (solib_address (bpt->address)) |
879bfdc2 DJ |
1188 | { |
1189 | /* See also: disable_breakpoints_in_shlibs. */ | |
1190 | val = 0; | |
0d381245 | 1191 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1192 | if (!*disabled_breaks) |
1193 | { | |
1194 | fprintf_unfiltered (tmp_error_stream, | |
1195 | "Cannot insert breakpoint %d.\n", | |
1196 | bpt->owner->number); | |
1197 | fprintf_unfiltered (tmp_error_stream, | |
1198 | "Temporarily disabling shared library breakpoints:\n"); | |
1199 | } | |
1200 | *disabled_breaks = 1; | |
1201 | fprintf_unfiltered (tmp_error_stream, | |
1202 | "breakpoint #%d\n", bpt->owner->number); | |
1203 | } | |
1204 | else | |
879bfdc2 DJ |
1205 | { |
1206 | #ifdef ONE_PROCESS_WRITETEXT | |
1207 | *process_warning = 1; | |
1208 | #endif | |
1209 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
1210 | { | |
1211 | *hw_breakpoint_error = 1; | |
1212 | fprintf_unfiltered (tmp_error_stream, | |
1213 | "Cannot insert hardware breakpoint %d.\n", | |
1214 | bpt->owner->number); | |
1215 | } | |
1216 | else | |
1217 | { | |
1218 | fprintf_unfiltered (tmp_error_stream, | |
1219 | "Cannot insert breakpoint %d.\n", | |
1220 | bpt->owner->number); | |
1221 | fprintf_filtered (tmp_error_stream, | |
1222 | "Error accessing memory address "); | |
ed49a04f | 1223 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1224 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1225 | safe_strerror (val)); | |
1226 | } | |
1227 | ||
1228 | } | |
1229 | } | |
1230 | else | |
1231 | bpt->inserted = 1; | |
1232 | ||
1233 | return val; | |
1234 | } | |
1235 | ||
1236 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1237 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1238 | watchpoints. It's not clear that it's necessary... */ | |
1239 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1240 | { | |
a5606eee VP |
1241 | val = target_insert_watchpoint (bpt->address, |
1242 | bpt->length, | |
1243 | bpt->watchpoint_type); | |
1244 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1245 | } |
1246 | ||
879bfdc2 DJ |
1247 | else if (bpt->owner->type == bp_catch_fork |
1248 | || bpt->owner->type == bp_catch_vfork | |
1249 | || bpt->owner->type == bp_catch_exec) | |
1250 | { | |
71fff37b AC |
1251 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1252 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1253 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1254 | bpt->owner->number); | |
1255 | if (e.reason < 0) | |
879bfdc2 DJ |
1256 | bpt->owner->enable_state = bp_disabled; |
1257 | else | |
1258 | bpt->inserted = 1; | |
1640b821 DJ |
1259 | |
1260 | /* We've already printed an error message if there was a problem | |
1261 | inserting this catchpoint, and we've disabled the catchpoint, | |
1262 | so just return success. */ | |
1263 | return 0; | |
879bfdc2 DJ |
1264 | } |
1265 | ||
1266 | return 0; | |
1267 | } | |
1268 | ||
74960c60 VP |
1269 | /* Make sure all breakpoints are inserted in inferior. |
1270 | Throws exception on any error. | |
1271 | A breakpoint that is already inserted won't be inserted | |
1272 | again, so calling this function twice is safe. */ | |
1273 | void | |
1274 | insert_breakpoints (void) | |
1275 | { | |
1276 | struct breakpoint *bpt; | |
1277 | ||
1278 | ALL_BREAKPOINTS (bpt) | |
1279 | if (is_hardware_watchpoint (bpt)) | |
1280 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1281 | ||
1282 | update_global_location_list (); | |
1283 | ||
1284 | if (!always_inserted_mode && target_has_execution) | |
1285 | /* update_global_location_list does not insert breakpoints | |
1286 | when always_inserted_mode is not enabled. Explicitly | |
1287 | insert them now. */ | |
1288 | insert_breakpoint_locations (); | |
1289 | } | |
1290 | ||
c906108c SS |
1291 | /* insert_breakpoints is used when starting or continuing the program. |
1292 | remove_breakpoints is used when the program stops. | |
1293 | Both return zero if successful, | |
1294 | or an `errno' value if could not write the inferior. */ | |
1295 | ||
74960c60 VP |
1296 | static void |
1297 | insert_breakpoint_locations (void) | |
c906108c | 1298 | { |
a5606eee | 1299 | struct breakpoint *bpt; |
879bfdc2 | 1300 | struct bp_location *b, *temp; |
e236ba44 | 1301 | int error = 0; |
c906108c SS |
1302 | int val = 0; |
1303 | int disabled_breaks = 0; | |
81d0cc19 GS |
1304 | int hw_breakpoint_error = 0; |
1305 | int process_warning = 0; | |
c906108c | 1306 | |
81d0cc19 GS |
1307 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1308 | make_cleanup_ui_file_delete (tmp_error_stream); | |
74960c60 | 1309 | |
81d0cc19 GS |
1310 | /* Explicitly mark the warning -- this will only be printed if |
1311 | there was an error. */ | |
1312 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1313 | |
879bfdc2 DJ |
1314 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1315 | { | |
74960c60 | 1316 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1317 | continue; |
1318 | ||
f365de73 AS |
1319 | /* There is no point inserting thread-specific breakpoints if the |
1320 | thread no longer exists. */ | |
1321 | if (b->owner->thread != -1 | |
1322 | && !valid_thread_id (b->owner->thread)) | |
1323 | continue; | |
1324 | ||
879bfdc2 DJ |
1325 | val = insert_bp_location (b, tmp_error_stream, |
1326 | &disabled_breaks, &process_warning, | |
1327 | &hw_breakpoint_error); | |
1328 | if (val) | |
e236ba44 | 1329 | error = val; |
879bfdc2 | 1330 | } |
c906108c | 1331 | |
a5606eee VP |
1332 | /* If we failed to insert all locations of a watchpoint, |
1333 | remove them, as half-inserted watchpoint is of limited use. */ | |
1334 | ALL_BREAKPOINTS (bpt) | |
1335 | { | |
1336 | int some_failed = 0; | |
1337 | struct bp_location *loc; | |
1338 | ||
1339 | if (!is_hardware_watchpoint (bpt)) | |
1340 | continue; | |
1341 | ||
1342 | if (bpt->enable_state != bp_enabled) | |
1343 | continue; | |
74960c60 VP |
1344 | |
1345 | if (bpt->disposition == disp_del_at_next_stop) | |
1346 | continue; | |
a5606eee VP |
1347 | |
1348 | for (loc = bpt->loc; loc; loc = loc->next) | |
1349 | if (!loc->inserted) | |
1350 | { | |
1351 | some_failed = 1; | |
1352 | break; | |
1353 | } | |
1354 | if (some_failed) | |
1355 | { | |
1356 | for (loc = bpt->loc; loc; loc = loc->next) | |
1357 | if (loc->inserted) | |
1358 | remove_breakpoint (loc, mark_uninserted); | |
1359 | ||
1360 | hw_breakpoint_error = 1; | |
1361 | fprintf_unfiltered (tmp_error_stream, | |
1362 | "Could not insert hardware watchpoint %d.\n", | |
1363 | bpt->number); | |
1364 | error = -1; | |
1365 | } | |
1366 | } | |
1367 | ||
e236ba44 | 1368 | if (error) |
81d0cc19 GS |
1369 | { |
1370 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1371 | message about possibly exhausted resources. */ | |
879bfdc2 | 1372 | if (hw_breakpoint_error) |
81d0cc19 | 1373 | { |
c6510018 MS |
1374 | fprintf_unfiltered (tmp_error_stream, |
1375 | "Could not insert hardware breakpoints:\n\ | |
1376 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1377 | } |
c6510018 | 1378 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1379 | if (process_warning) |
c6510018 MS |
1380 | fprintf_unfiltered (tmp_error_stream, |
1381 | "The same program may be running in another process."); | |
1382 | #endif | |
81d0cc19 GS |
1383 | target_terminal_ours_for_output (); |
1384 | error_stream (tmp_error_stream); | |
1385 | } | |
c906108c SS |
1386 | } |
1387 | ||
c906108c | 1388 | int |
fba45db2 | 1389 | remove_breakpoints (void) |
c906108c | 1390 | { |
0bde7532 | 1391 | struct bp_location *b; |
c906108c SS |
1392 | int val; |
1393 | ||
0bde7532 | 1394 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1395 | { |
0bde7532 | 1396 | if (b->inserted) |
c5aa993b JM |
1397 | { |
1398 | val = remove_breakpoint (b, mark_uninserted); | |
1399 | if (val != 0) | |
1400 | return val; | |
1401 | } | |
1402 | } | |
c906108c SS |
1403 | return 0; |
1404 | } | |
1405 | ||
692590c1 | 1406 | int |
80ce1ecb | 1407 | remove_hw_watchpoints (void) |
692590c1 | 1408 | { |
0bde7532 | 1409 | struct bp_location *b; |
692590c1 MS |
1410 | int val; |
1411 | ||
0bde7532 | 1412 | ALL_BP_LOCATIONS (b) |
692590c1 | 1413 | { |
0bde7532 | 1414 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1415 | { |
1416 | val = remove_breakpoint (b, mark_uninserted); | |
1417 | if (val != 0) | |
1418 | return val; | |
1419 | } | |
1420 | } | |
1421 | return 0; | |
1422 | } | |
1423 | ||
c906108c | 1424 | int |
fba45db2 | 1425 | reattach_breakpoints (int pid) |
c906108c | 1426 | { |
0bde7532 | 1427 | struct bp_location *b; |
c906108c | 1428 | int val; |
ce696e05 | 1429 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 DJ |
1430 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1431 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; | |
1432 | ||
1433 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1434 | |
ce696e05 | 1435 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1436 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1437 | { |
0bde7532 | 1438 | if (b->inserted) |
c5aa993b | 1439 | { |
a4954f26 DJ |
1440 | b->inserted = 0; |
1441 | val = insert_bp_location (b, tmp_error_stream, | |
1442 | &dummy1, &dummy2, &dummy3); | |
c5aa993b JM |
1443 | if (val != 0) |
1444 | { | |
ce696e05 | 1445 | do_cleanups (old_chain); |
c5aa993b JM |
1446 | return val; |
1447 | } | |
1448 | } | |
1449 | } | |
ce696e05 | 1450 | do_cleanups (old_chain); |
c906108c SS |
1451 | return 0; |
1452 | } | |
1453 | ||
74960c60 VP |
1454 | static void |
1455 | restore_always_inserted_mode (void *p) | |
1456 | { | |
1457 | always_inserted_mode = (uintptr_t) p; | |
1458 | } | |
1459 | ||
c906108c | 1460 | void |
fba45db2 | 1461 | update_breakpoints_after_exec (void) |
c906108c | 1462 | { |
c5aa993b JM |
1463 | struct breakpoint *b; |
1464 | struct breakpoint *temp; | |
74960c60 | 1465 | struct cleanup *cleanup; |
c906108c SS |
1466 | |
1467 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1468 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1469 | shadow is NOT valid after an exec()! */ | |
1470 | mark_breakpoints_out (); | |
1471 | ||
74960c60 VP |
1472 | /* The binary we used to debug is now gone, and we're updating |
1473 | breakpoints for the new binary. Until we're done, we should not | |
1474 | try to insert breakpoints. */ | |
1475 | cleanup = make_cleanup (restore_always_inserted_mode, | |
1476 | (void *) (uintptr_t) always_inserted_mode); | |
1477 | always_inserted_mode = 0; | |
1478 | ||
c906108c | 1479 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b JM |
1480 | { |
1481 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1482 | if (b->type == bp_shlib_event) | |
1483 | { | |
1484 | delete_breakpoint (b); | |
1485 | continue; | |
1486 | } | |
c906108c | 1487 | |
1900040c MS |
1488 | /* Thread event breakpoints must be set anew after an exec(), |
1489 | as must overlay event breakpoints. */ | |
1490 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1491 | { |
1492 | delete_breakpoint (b); | |
1493 | continue; | |
1494 | } | |
1495 | ||
c5aa993b JM |
1496 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1497 | if (b->type == bp_step_resume) | |
1498 | { | |
1499 | delete_breakpoint (b); | |
1500 | continue; | |
1501 | } | |
1502 | ||
c5aa993b JM |
1503 | /* Don't delete an exec catchpoint, because else the inferior |
1504 | won't stop when it ought! | |
1505 | ||
1506 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1507 | on this target, we may not be able to stop when the vfork is |
1508 | seen, but only when the subsequent exec is seen. (And because | |
1509 | deleting fork catchpoints here but not vfork catchpoints will | |
e14a792b | 1510 | seem mysterious to users, keep those too.) */ |
c5aa993b JM |
1511 | if ((b->type == bp_catch_exec) || |
1512 | (b->type == bp_catch_vfork) || | |
1513 | (b->type == bp_catch_fork)) | |
1514 | { | |
c5aa993b JM |
1515 | continue; |
1516 | } | |
1517 | ||
1518 | /* bp_finish is a special case. The only way we ought to be able | |
1519 | to see one of these when an exec() has happened, is if the user | |
1520 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1521 | carries them to the call-site of the current callee, by setting | |
1522 | a temporary bp there and resuming. But in this case, the finish | |
1523 | will carry them entirely through the vfork & exec. | |
1524 | ||
1525 | We don't want to allow a bp_finish to remain inserted now. But | |
1526 | we can't safely delete it, 'cause finish_command has a handle to | |
1527 | the bp on a bpstat, and will later want to delete it. There's a | |
1528 | chance (and I've seen it happen) that if we delete the bp_finish | |
1529 | here, that its storage will get reused by the time finish_command | |
1530 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1531 | We really must allow finish_command to delete a bp_finish. | |
1532 | ||
53a5351d JM |
1533 | In the absense of a general solution for the "how do we know |
1534 | it's safe to delete something others may have handles to?" | |
1535 | problem, what we'll do here is just uninsert the bp_finish, and | |
1536 | let finish_command delete it. | |
1537 | ||
1538 | (We know the bp_finish is "doomed" in the sense that it's | |
1539 | momentary, and will be deleted as soon as finish_command sees | |
1540 | the inferior stopped. So it doesn't matter that the bp's | |
1541 | address is probably bogus in the new a.out, unlike e.g., the | |
1542 | solib breakpoints.) */ | |
c5aa993b | 1543 | |
c5aa993b JM |
1544 | if (b->type == bp_finish) |
1545 | { | |
1546 | continue; | |
1547 | } | |
1548 | ||
1549 | /* Without a symbolic address, we have little hope of the | |
1550 | pre-exec() address meaning the same thing in the post-exec() | |
1551 | a.out. */ | |
1552 | if (b->addr_string == NULL) | |
1553 | { | |
1554 | delete_breakpoint (b); | |
1555 | continue; | |
1556 | } | |
c5aa993b | 1557 | } |
1900040c MS |
1558 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1559 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
74960c60 | 1560 | do_cleanups (cleanup); |
c906108c SS |
1561 | } |
1562 | ||
1563 | int | |
fba45db2 | 1564 | detach_breakpoints (int pid) |
c906108c | 1565 | { |
0bde7532 | 1566 | struct bp_location *b; |
c906108c | 1567 | int val; |
ce696e05 | 1568 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1569 | |
39f77062 | 1570 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1571 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1572 | |
ce696e05 KB |
1573 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1574 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1575 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1576 | { |
0bde7532 | 1577 | if (b->inserted) |
c5aa993b JM |
1578 | { |
1579 | val = remove_breakpoint (b, mark_inserted); | |
1580 | if (val != 0) | |
1581 | { | |
ce696e05 | 1582 | do_cleanups (old_chain); |
c5aa993b JM |
1583 | return val; |
1584 | } | |
1585 | } | |
1586 | } | |
ce696e05 | 1587 | do_cleanups (old_chain); |
c906108c SS |
1588 | return 0; |
1589 | } | |
1590 | ||
1591 | static int | |
0bde7532 | 1592 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1593 | { |
1594 | int val; | |
c5aa993b | 1595 | |
0bde7532 | 1596 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1597 | /* Permanent breakpoints cannot be inserted or removed. */ |
1598 | return 0; | |
1599 | ||
74960c60 VP |
1600 | /* The type of none suggests that owner is actually deleted. |
1601 | This should not ever happen. */ | |
1602 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1603 | |
1604 | if (b->loc_type == bp_loc_software_breakpoint | |
1605 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1606 | { |
c02f5703 MS |
1607 | /* "Normal" instruction breakpoint: either the standard |
1608 | trap-instruction bp (bp_breakpoint), or a | |
1609 | bp_hardware_breakpoint. */ | |
1610 | ||
1611 | /* First check to see if we have to handle an overlay. */ | |
1612 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1613 | || b->section == NULL |
1614 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1615 | { |
1616 | /* No overlay handling: just remove the breakpoint. */ | |
1617 | ||
0bde7532 | 1618 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1619 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1620 | else |
8181d85f | 1621 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1622 | } |
c906108c SS |
1623 | else |
1624 | { | |
c02f5703 MS |
1625 | /* This breakpoint is in an overlay section. |
1626 | Did we set a breakpoint at the LMA? */ | |
1627 | if (!overlay_events_enabled) | |
1628 | { | |
1629 | /* Yes -- overlay event support is not active, so we | |
1630 | should have set a breakpoint at the LMA. Remove it. | |
1631 | */ | |
c02f5703 MS |
1632 | /* Ignore any failures: if the LMA is in ROM, we will |
1633 | have already warned when we failed to insert it. */ | |
0bde7532 | 1634 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1635 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1636 | else |
8181d85f | 1637 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1638 | } |
1639 | /* Did we set a breakpoint at the VMA? | |
1640 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1641 | if (b->inserted) |
c906108c | 1642 | { |
c02f5703 MS |
1643 | /* Yes -- remove it. Previously we did not bother to |
1644 | remove the breakpoint if the section had been | |
1645 | unmapped, but let's not rely on that being safe. We | |
1646 | don't know what the overlay manager might do. */ | |
0bde7532 | 1647 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1648 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1649 | |
1650 | /* However, we should remove *software* breakpoints only | |
1651 | if the section is still mapped, or else we overwrite | |
1652 | wrong code with the saved shadow contents. */ | |
1653 | else if (section_is_mapped (b->section)) | |
8181d85f | 1654 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1655 | else |
1656 | val = 0; | |
c906108c | 1657 | } |
c02f5703 MS |
1658 | else |
1659 | { | |
1660 | /* No -- not inserted, so no need to remove. No error. */ | |
1661 | val = 0; | |
1662 | } | |
c906108c SS |
1663 | } |
1664 | if (val) | |
1665 | return val; | |
0bde7532 | 1666 | b->inserted = (is == mark_inserted); |
c906108c | 1667 | } |
a5606eee | 1668 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1669 | { |
278cd55f AC |
1670 | struct value *v; |
1671 | struct value *n; | |
c5aa993b | 1672 | |
0bde7532 | 1673 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1674 | val = target_remove_watchpoint (b->address, b->length, |
1675 | b->watchpoint_type); | |
2e70b7b9 | 1676 | |
c906108c | 1677 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1678 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1679 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1680 | b->owner->number); |
c906108c | 1681 | } |
0bde7532 DJ |
1682 | else if ((b->owner->type == bp_catch_fork || |
1683 | b->owner->type == bp_catch_vfork || | |
1684 | b->owner->type == bp_catch_exec) | |
468d015d | 1685 | && breakpoint_enabled (b->owner) |
0bde7532 | 1686 | && !b->duplicate) |
c906108c SS |
1687 | { |
1688 | val = -1; | |
0bde7532 | 1689 | switch (b->owner->type) |
c5aa993b JM |
1690 | { |
1691 | case bp_catch_fork: | |
39f77062 | 1692 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1693 | break; |
1694 | case bp_catch_vfork: | |
39f77062 | 1695 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1696 | break; |
1697 | case bp_catch_exec: | |
39f77062 | 1698 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1699 | break; |
ac9a91a7 | 1700 | default: |
8a3fe4f8 | 1701 | warning (_("Internal error, %s line %d."), __FILE__, __LINE__); |
ac9a91a7 | 1702 | break; |
c5aa993b | 1703 | } |
c906108c SS |
1704 | if (val) |
1705 | return val; | |
0bde7532 | 1706 | b->inserted = (is == mark_inserted); |
c906108c | 1707 | } |
c906108c SS |
1708 | |
1709 | return 0; | |
1710 | } | |
1711 | ||
1712 | /* Clear the "inserted" flag in all breakpoints. */ | |
1713 | ||
55a3f01f | 1714 | static void |
fba45db2 | 1715 | mark_breakpoints_out (void) |
c906108c | 1716 | { |
075f6582 | 1717 | struct bp_location *bpt; |
c906108c | 1718 | |
075f6582 DJ |
1719 | ALL_BP_LOCATIONS (bpt) |
1720 | bpt->inserted = 0; | |
c906108c SS |
1721 | } |
1722 | ||
53a5351d JM |
1723 | /* Clear the "inserted" flag in all breakpoints and delete any |
1724 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1725 | |
1726 | Plus other such housekeeping that has to be done for breakpoints | |
1727 | between runs. | |
1728 | ||
53a5351d JM |
1729 | Note: this function gets called at the end of a run (by |
1730 | generic_mourn_inferior) and when a run begins (by | |
1731 | init_wait_for_inferior). */ | |
c906108c SS |
1732 | |
1733 | ||
1734 | ||
1735 | void | |
fba45db2 | 1736 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1737 | { |
52f0bd74 | 1738 | struct breakpoint *b, *temp; |
075f6582 | 1739 | struct bp_location *bpt; |
c906108c | 1740 | |
075f6582 DJ |
1741 | ALL_BP_LOCATIONS (bpt) |
1742 | bpt->inserted = 0; | |
1743 | ||
c906108c | 1744 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1745 | { |
c5aa993b JM |
1746 | switch (b->type) |
1747 | { | |
1748 | case bp_call_dummy: | |
1749 | case bp_watchpoint_scope: | |
c906108c | 1750 | |
c5aa993b JM |
1751 | /* If the call dummy breakpoint is at the entry point it will |
1752 | cause problems when the inferior is rerun, so we better | |
1753 | get rid of it. | |
c906108c | 1754 | |
c5aa993b JM |
1755 | Also get rid of scope breakpoints. */ |
1756 | delete_breakpoint (b); | |
1757 | break; | |
c906108c | 1758 | |
c5aa993b JM |
1759 | case bp_watchpoint: |
1760 | case bp_hardware_watchpoint: | |
1761 | case bp_read_watchpoint: | |
1762 | case bp_access_watchpoint: | |
c906108c | 1763 | |
c5aa993b JM |
1764 | /* Likewise for watchpoints on local expressions. */ |
1765 | if (b->exp_valid_block != NULL) | |
1766 | delete_breakpoint (b); | |
967af18d | 1767 | else if (context == inf_starting) |
c860120c PM |
1768 | { |
1769 | /* Reset val field to force reread of starting value | |
1770 | in insert_breakpoints. */ | |
1771 | if (b->val) | |
1772 | value_free (b->val); | |
1773 | b->val = NULL; | |
fa4727a6 | 1774 | b->val_valid = 0; |
c860120c | 1775 | } |
c5aa993b JM |
1776 | break; |
1777 | default: | |
c5aa993b JM |
1778 | break; |
1779 | } | |
1780 | } | |
c906108c SS |
1781 | } |
1782 | ||
c2c6d25f JM |
1783 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1784 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1785 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1786 | permanent breakpoint. | |
1787 | - When continuing from a location with an ordinary breakpoint, we | |
1788 | actually single step once before calling insert_breakpoints. | |
1789 | - When continuing from a localion with a permanent breakpoint, we | |
1790 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1791 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1792 | |
c2c6d25f | 1793 | enum breakpoint_here |
fba45db2 | 1794 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1795 | { |
89f9893c | 1796 | const struct bp_location *bpt; |
c2c6d25f | 1797 | int any_breakpoint_here = 0; |
c906108c | 1798 | |
075f6582 DJ |
1799 | ALL_BP_LOCATIONS (bpt) |
1800 | { | |
1801 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1802 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1803 | continue; | |
1804 | ||
468d015d | 1805 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1806 | || bpt->owner->enable_state == bp_permanent) |
1807 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1808 | { | |
1809 | if (overlay_debugging | |
1810 | && section_is_overlay (bpt->section) | |
1811 | && !section_is_mapped (bpt->section)) | |
1812 | continue; /* unmapped overlay -- can't be a match */ | |
1813 | else if (bpt->owner->enable_state == bp_permanent) | |
1814 | return permanent_breakpoint_here; | |
1815 | else | |
1816 | any_breakpoint_here = 1; | |
1817 | } | |
1818 | } | |
c906108c | 1819 | |
c2c6d25f | 1820 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1821 | } |
1822 | ||
c2c6d25f | 1823 | |
c36b740a VP |
1824 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1825 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1826 | This does not check for single-step breakpoints, which are | |
1827 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1828 | |
1829 | int | |
c36b740a | 1830 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1831 | { |
89f9893c | 1832 | const struct bp_location *bpt; |
c906108c | 1833 | |
075f6582 | 1834 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1835 | { |
075f6582 DJ |
1836 | if (bpt->loc_type != bp_loc_software_breakpoint |
1837 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1838 | continue; | |
1839 | ||
1840 | if (bpt->inserted | |
1841 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1842 | { | |
1843 | if (overlay_debugging | |
1844 | && section_is_overlay (bpt->section) | |
1845 | && !section_is_mapped (bpt->section)) | |
1846 | continue; /* unmapped overlay -- can't be a match */ | |
1847 | else | |
1848 | return 1; | |
1849 | } | |
c5aa993b | 1850 | } |
c36b740a VP |
1851 | return 0; |
1852 | } | |
1853 | ||
1854 | /* Returns non-zero iff there's either regular breakpoint | |
1855 | or a single step breakpoint inserted at PC. */ | |
1856 | ||
1857 | int | |
1858 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1859 | { | |
1860 | if (regular_breakpoint_inserted_here_p (pc)) | |
1861 | return 1; | |
c906108c | 1862 | |
1aafd4da UW |
1863 | if (single_step_breakpoint_inserted_here_p (pc)) |
1864 | return 1; | |
1865 | ||
c906108c SS |
1866 | return 0; |
1867 | } | |
1868 | ||
4fa8626c DJ |
1869 | /* This function returns non-zero iff there is a software breakpoint |
1870 | inserted at PC. */ | |
1871 | ||
1872 | int | |
1873 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1874 | { | |
89f9893c | 1875 | const struct bp_location *bpt; |
4fa8626c DJ |
1876 | int any_breakpoint_here = 0; |
1877 | ||
1878 | ALL_BP_LOCATIONS (bpt) | |
1879 | { | |
1880 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1881 | continue; | |
1882 | ||
0d381245 | 1883 | if (bpt->inserted |
4fa8626c DJ |
1884 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1885 | { | |
1886 | if (overlay_debugging | |
1887 | && section_is_overlay (bpt->section) | |
1888 | && !section_is_mapped (bpt->section)) | |
1889 | continue; /* unmapped overlay -- can't be a match */ | |
1890 | else | |
1891 | return 1; | |
1892 | } | |
1893 | } | |
1894 | ||
1aafd4da UW |
1895 | /* Also check for software single-step breakpoints. */ |
1896 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1897 | return 1; | |
1898 | ||
4fa8626c DJ |
1899 | return 0; |
1900 | } | |
1901 | ||
075f6582 DJ |
1902 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1903 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1904 | |
1905 | int | |
39f77062 | 1906 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1907 | { |
89f9893c | 1908 | const struct bp_location *bpt; |
c906108c SS |
1909 | int thread; |
1910 | ||
39f77062 | 1911 | thread = pid_to_thread_id (ptid); |
c906108c | 1912 | |
075f6582 | 1913 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1914 | { |
075f6582 DJ |
1915 | if (bpt->loc_type != bp_loc_software_breakpoint |
1916 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1917 | continue; | |
1918 | ||
468d015d | 1919 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1920 | || bpt->owner->enable_state == bp_permanent) |
1921 | && bpt->address == pc | |
1922 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1923 | { | |
1924 | if (overlay_debugging | |
1925 | && section_is_overlay (bpt->section) | |
1926 | && !section_is_mapped (bpt->section)) | |
1927 | continue; /* unmapped overlay -- can't be a match */ | |
1928 | else | |
1929 | return 1; | |
1930 | } | |
c5aa993b | 1931 | } |
c906108c SS |
1932 | |
1933 | return 0; | |
1934 | } | |
c906108c | 1935 | \f |
c5aa993b | 1936 | |
c906108c SS |
1937 | /* bpstat stuff. External routines' interfaces are documented |
1938 | in breakpoint.h. */ | |
1939 | ||
1940 | int | |
fba45db2 | 1941 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1942 | { |
1943 | return | |
1944 | (ep->type == bp_catch_load) | |
1945 | || (ep->type == bp_catch_unload) | |
1946 | || (ep->type == bp_catch_fork) | |
1947 | || (ep->type == bp_catch_vfork) | |
dfdfb3ca | 1948 | || (ep->type == bp_catch_exec); |
c906108c | 1949 | |
c5aa993b | 1950 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1951 | } |
c5aa993b | 1952 | |
c906108c | 1953 | int |
fba45db2 | 1954 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1955 | { |
1956 | return | |
1957 | (ep->type == bp_catch_load) | |
d85310f7 | 1958 | || (ep->type == bp_catch_unload); |
c906108c SS |
1959 | } |
1960 | ||
198757a8 VP |
1961 | void |
1962 | bpstat_free (bpstat bs) | |
1963 | { | |
1964 | if (bs->old_val != NULL) | |
1965 | value_free (bs->old_val); | |
1966 | free_command_lines (&bs->commands); | |
1967 | xfree (bs); | |
1968 | } | |
1969 | ||
c906108c SS |
1970 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1971 | Also free any storage that is part of a bpstat. */ | |
1972 | ||
1973 | void | |
fba45db2 | 1974 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1975 | { |
1976 | bpstat p; | |
1977 | bpstat q; | |
1978 | ||
1979 | if (bsp == 0) | |
1980 | return; | |
1981 | p = *bsp; | |
1982 | while (p != NULL) | |
1983 | { | |
1984 | q = p->next; | |
198757a8 | 1985 | bpstat_free (p); |
c906108c SS |
1986 | p = q; |
1987 | } | |
1988 | *bsp = NULL; | |
1989 | } | |
1990 | ||
1991 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1992 | is part of the bpstat is copied as well. */ | |
1993 | ||
1994 | bpstat | |
fba45db2 | 1995 | bpstat_copy (bpstat bs) |
c906108c SS |
1996 | { |
1997 | bpstat p = NULL; | |
1998 | bpstat tmp; | |
1999 | bpstat retval = NULL; | |
2000 | ||
2001 | if (bs == NULL) | |
2002 | return bs; | |
2003 | ||
2004 | for (; bs != NULL; bs = bs->next) | |
2005 | { | |
2006 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2007 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2008 | if (bs->commands != NULL) |
2009 | tmp->commands = copy_command_lines (bs->commands); | |
2010 | if (bs->old_val != NULL) | |
2011 | tmp->old_val = value_copy (bs->old_val); | |
2012 | ||
c906108c SS |
2013 | if (p == NULL) |
2014 | /* This is the first thing in the chain. */ | |
2015 | retval = tmp; | |
2016 | else | |
2017 | p->next = tmp; | |
2018 | p = tmp; | |
2019 | } | |
2020 | p->next = NULL; | |
2021 | return retval; | |
2022 | } | |
2023 | ||
2024 | /* Find the bpstat associated with this breakpoint */ | |
2025 | ||
2026 | bpstat | |
fba45db2 | 2027 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2028 | { |
c5aa993b JM |
2029 | if (bsp == NULL) |
2030 | return NULL; | |
c906108c | 2031 | |
c5aa993b JM |
2032 | for (; bsp != NULL; bsp = bsp->next) |
2033 | { | |
4f8d1dc6 | 2034 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2035 | return bsp; |
2036 | } | |
c906108c SS |
2037 | return NULL; |
2038 | } | |
2039 | ||
2040 | /* Find a step_resume breakpoint associated with this bpstat. | |
2041 | (If there are multiple step_resume bp's on the list, this function | |
2042 | will arbitrarily pick one.) | |
2043 | ||
2044 | It is an error to use this function if BPSTAT doesn't contain a | |
2045 | step_resume breakpoint. | |
2046 | ||
2047 | See wait_for_inferior's use of this function. */ | |
2048 | struct breakpoint * | |
fba45db2 | 2049 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2050 | { |
8601f500 MS |
2051 | int current_thread; |
2052 | ||
8a3fe4f8 | 2053 | gdb_assert (bsp != NULL); |
c906108c | 2054 | |
8601f500 MS |
2055 | current_thread = pid_to_thread_id (inferior_ptid); |
2056 | ||
c906108c SS |
2057 | for (; bsp != NULL; bsp = bsp->next) |
2058 | { | |
2059 | if ((bsp->breakpoint_at != NULL) && | |
4f8d1dc6 VP |
2060 | (bsp->breakpoint_at->owner->type == bp_step_resume) && |
2061 | (bsp->breakpoint_at->owner->thread == current_thread || | |
2062 | bsp->breakpoint_at->owner->thread == -1)) | |
2063 | return bsp->breakpoint_at->owner; | |
c906108c SS |
2064 | } |
2065 | ||
8a3fe4f8 | 2066 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2067 | } |
2068 | ||
2069 | ||
8671a17b | 2070 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2071 | at. *BSP upon return is a bpstat which points to the remaining |
2072 | breakpoints stopped at (but which is not guaranteed to be good for | |
2073 | anything but further calls to bpstat_num). | |
8671a17b PA |
2074 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2075 | Return -1 if stopped at a breakpoint that has been deleted since | |
2076 | we set it. | |
2077 | Return 1 otherwise. */ | |
c906108c SS |
2078 | |
2079 | int | |
8671a17b | 2080 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2081 | { |
2082 | struct breakpoint *b; | |
2083 | ||
2084 | if ((*bsp) == NULL) | |
2085 | return 0; /* No more breakpoint values */ | |
8671a17b | 2086 | |
4f8d1dc6 VP |
2087 | /* We assume we'll never have several bpstats that |
2088 | correspond to a single breakpoint -- otherwise, | |
2089 | this function might return the same number more | |
2090 | than once and this will look ugly. */ | |
2091 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2092 | *bsp = (*bsp)->next; |
2093 | if (b == NULL) | |
2094 | return -1; /* breakpoint that's been deleted since */ | |
2095 | ||
2096 | *num = b->number; /* We have its number */ | |
2097 | return 1; | |
c906108c SS |
2098 | } |
2099 | ||
2100 | /* Modify BS so that the actions will not be performed. */ | |
2101 | ||
2102 | void | |
fba45db2 | 2103 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2104 | { |
2105 | for (; bs != NULL; bs = bs->next) | |
2106 | { | |
c2b8ed2c | 2107 | free_command_lines (&bs->commands); |
c906108c SS |
2108 | if (bs->old_val != NULL) |
2109 | { | |
2110 | value_free (bs->old_val); | |
2111 | bs->old_val = NULL; | |
2112 | } | |
2113 | } | |
2114 | } | |
2115 | ||
2116 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2117 | static void |
4efb68b1 | 2118 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2119 | { |
2120 | executing_breakpoint_commands = 0; | |
2121 | } | |
2122 | ||
2123 | /* Execute all the commands associated with all the breakpoints at this | |
2124 | location. Any of these commands could cause the process to proceed | |
2125 | beyond this point, etc. We look out for such changes by checking | |
2126 | the global "breakpoint_proceeded" after each command. */ | |
2127 | ||
2128 | void | |
fba45db2 | 2129 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2130 | { |
2131 | bpstat bs; | |
2132 | struct cleanup *old_chain; | |
c906108c SS |
2133 | |
2134 | /* Avoid endless recursion if a `source' command is contained | |
2135 | in bs->commands. */ | |
2136 | if (executing_breakpoint_commands) | |
2137 | return; | |
2138 | ||
2139 | executing_breakpoint_commands = 1; | |
2140 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2141 | ||
2142 | top: | |
2143 | /* Note that (as of this writing), our callers all appear to | |
2144 | be passing us the address of global stop_bpstat. And, if | |
2145 | our calls to execute_control_command cause the inferior to | |
2146 | proceed, that global (and hence, *bsp) will change. | |
2147 | ||
2148 | We must be careful to not touch *bsp unless the inferior | |
2149 | has not proceeded. */ | |
2150 | ||
2151 | /* This pointer will iterate over the list of bpstat's. */ | |
2152 | bs = *bsp; | |
2153 | ||
2154 | breakpoint_proceeded = 0; | |
2155 | for (; bs != NULL; bs = bs->next) | |
2156 | { | |
6c50ab1c JB |
2157 | struct command_line *cmd; |
2158 | struct cleanup *this_cmd_tree_chain; | |
2159 | ||
2160 | /* Take ownership of the BSP's command tree, if it has one. | |
2161 | ||
2162 | The command tree could legitimately contain commands like | |
2163 | 'step' and 'next', which call clear_proceed_status, which | |
2164 | frees stop_bpstat's command tree. To make sure this doesn't | |
2165 | free the tree we're executing out from under us, we need to | |
2166 | take ownership of the tree ourselves. Since a given bpstat's | |
2167 | commands are only executed once, we don't need to copy it; we | |
2168 | can clear the pointer in the bpstat, and make sure we free | |
2169 | the tree when we're done. */ | |
c906108c | 2170 | cmd = bs->commands; |
6c50ab1c JB |
2171 | bs->commands = 0; |
2172 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2173 | ||
c906108c SS |
2174 | while (cmd != NULL) |
2175 | { | |
2176 | execute_control_command (cmd); | |
2177 | ||
2178 | if (breakpoint_proceeded) | |
2179 | break; | |
2180 | else | |
2181 | cmd = cmd->next; | |
2182 | } | |
6c50ab1c JB |
2183 | |
2184 | /* We can free this command tree now. */ | |
2185 | do_cleanups (this_cmd_tree_chain); | |
2186 | ||
c906108c | 2187 | if (breakpoint_proceeded) |
32c1e744 VP |
2188 | { |
2189 | if (target_can_async_p ()) | |
2190 | /* If we are in async mode, then the target might | |
2191 | be still running, not stopped at any breakpoint, | |
2192 | so nothing for us to do here -- just return to | |
2193 | the event loop. */ | |
2194 | break; | |
2195 | else | |
2196 | /* In sync mode, when execute_control_command returns | |
2197 | we're already standing on the next breakpoint. | |
2198 | Breakpoint commands for that stop were not run, | |
2199 | since execute_command does not run breakpoint | |
2200 | commands -- only command_line_handler does, but | |
2201 | that one is not involved in execution of breakpoint | |
2202 | commands. So, we can now execute breakpoint commands. | |
2203 | There's an implicit assumption that we're called with | |
2204 | stop_bpstat, so our parameter is the new bpstat to | |
2205 | handle. | |
2206 | It should be noted that making execute_command do | |
2207 | bpstat actions is not an option -- in this case we'll | |
2208 | have recursive invocation of bpstat for each breakpoint | |
2209 | with a command, and can easily blow up GDB stack. */ | |
2210 | goto top; | |
2211 | } | |
c906108c | 2212 | } |
c2b8ed2c | 2213 | do_cleanups (old_chain); |
c906108c SS |
2214 | } |
2215 | ||
fa4727a6 DJ |
2216 | /* Print out the (old or new) value associated with a watchpoint. */ |
2217 | ||
2218 | static void | |
2219 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2220 | { | |
2221 | if (val == NULL) | |
2222 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2223 | else | |
2224 | value_print (val, stream, 0, Val_pretty_default); | |
2225 | } | |
2226 | ||
e514a9d6 | 2227 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2228 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2229 | by having it set different print_it values. |
2230 | ||
2231 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2232 | through the bpstat list of things causing this stop, calling the | |
2233 | print_bp_stop_message function on each one. The behavior of the | |
2234 | print_bp_stop_message function depends on the print_it field of | |
2235 | bpstat. If such field so indicates, call this function here. | |
2236 | ||
2237 | Return values from this routine (ultimately used by bpstat_print() | |
2238 | and normal_stop() to decide what to do): | |
2239 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2240 | don't print anything else. | |
2241 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2242 | that something to be followed by a location. | |
2243 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2244 | that something to be followed by a location. | |
2245 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2246 | analysis. */ | |
c906108c | 2247 | |
917317f4 | 2248 | static enum print_stop_action |
fba45db2 | 2249 | print_it_typical (bpstat bs) |
c906108c | 2250 | { |
3b31d625 | 2251 | struct cleanup *old_chain, *ui_out_chain; |
4f8d1dc6 | 2252 | struct breakpoint *b; |
89f9893c | 2253 | const struct bp_location *bl; |
8b93c638 | 2254 | struct ui_stream *stb; |
2cec12e5 | 2255 | int bp_temp = 0; |
8b93c638 | 2256 | stb = ui_out_stream_new (uiout); |
b02eeafb | 2257 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2258 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2259 | which has since been deleted. */ | |
e514a9d6 | 2260 | if (bs->breakpoint_at == NULL) |
917317f4 | 2261 | return PRINT_UNKNOWN; |
0d381245 VP |
2262 | bl = bs->breakpoint_at; |
2263 | b = bl->owner; | |
c906108c | 2264 | |
4f8d1dc6 | 2265 | switch (b->type) |
c906108c | 2266 | { |
e514a9d6 JM |
2267 | case bp_breakpoint: |
2268 | case bp_hardware_breakpoint: | |
2cec12e5 | 2269 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2270 | if (bl->address != bl->requested_address) |
2271 | breakpoint_adjustment_warning (bl->requested_address, | |
2272 | bl->address, | |
4f8d1dc6 VP |
2273 | b->number, 1); |
2274 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2275 | if (bp_temp) |
2276 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2277 | else | |
2278 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2279 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2280 | { |
2281 | ui_out_field_string (uiout, "reason", | |
2282 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2283 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2284 | } | |
4f8d1dc6 | 2285 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 JM |
2286 | ui_out_text (uiout, ", "); |
2287 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2288 | break; |
2289 | ||
2290 | case bp_shlib_event: | |
917317f4 JM |
2291 | /* Did we stop because the user set the stop_on_solib_events |
2292 | variable? (If so, we report this as a generic, "Stopped due | |
2293 | to shlib event" message.) */ | |
a3f17187 | 2294 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2295 | return PRINT_NOTHING; |
2296 | break; | |
2297 | ||
c4093a6a JM |
2298 | case bp_thread_event: |
2299 | /* Not sure how we will get here. | |
2300 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2301 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2302 | return PRINT_NOTHING; |
2303 | break; | |
2304 | ||
1900040c MS |
2305 | case bp_overlay_event: |
2306 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2307 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2308 | return PRINT_NOTHING; |
2309 | break; | |
2310 | ||
e514a9d6 | 2311 | case bp_catch_load: |
4f8d1dc6 | 2312 | annotate_catchpoint (b->number); |
a3f17187 | 2313 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
4f8d1dc6 VP |
2314 | b->number, |
2315 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2316 | return PRINT_SRC_AND_LOC; |
2317 | break; | |
2318 | ||
2319 | case bp_catch_unload: | |
4f8d1dc6 | 2320 | annotate_catchpoint (b->number); |
a3f17187 | 2321 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
4f8d1dc6 VP |
2322 | b->number, |
2323 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2324 | return PRINT_SRC_AND_LOC; |
2325 | break; | |
2326 | ||
2327 | case bp_catch_fork: | |
4f8d1dc6 | 2328 | annotate_catchpoint (b->number); |
a3f17187 | 2329 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), |
4f8d1dc6 VP |
2330 | b->number, |
2331 | b->forked_inferior_pid); | |
917317f4 | 2332 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2333 | break; |
2334 | ||
2335 | case bp_catch_vfork: | |
4f8d1dc6 | 2336 | annotate_catchpoint (b->number); |
a3f17187 | 2337 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), |
4f8d1dc6 VP |
2338 | b->number, |
2339 | b->forked_inferior_pid); | |
e514a9d6 JM |
2340 | return PRINT_SRC_AND_LOC; |
2341 | break; | |
2342 | ||
2343 | case bp_catch_exec: | |
4f8d1dc6 | 2344 | annotate_catchpoint (b->number); |
a3f17187 | 2345 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), |
4f8d1dc6 VP |
2346 | b->number, |
2347 | b->exec_pathname); | |
917317f4 | 2348 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2349 | break; |
2350 | ||
e514a9d6 JM |
2351 | case bp_watchpoint: |
2352 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2353 | annotate_watchpoint (b->number); |
2354 | if (ui_out_is_mi_like_p (uiout)) | |
2355 | ui_out_field_string | |
2356 | (uiout, "reason", | |
2357 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2358 | mention (b); | |
2359 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
2360 | ui_out_text (uiout, "\nOld value = "); | |
2361 | watchpoint_value_print (bs->old_val, stb->stream); | |
2362 | ui_out_field_stream (uiout, "old", stb); | |
2363 | ui_out_text (uiout, "\nNew value = "); | |
2364 | watchpoint_value_print (b->val, stb->stream); | |
2365 | ui_out_field_stream (uiout, "new", stb); | |
2366 | do_cleanups (ui_out_chain); | |
2367 | ui_out_text (uiout, "\n"); | |
e514a9d6 JM |
2368 | /* More than one watchpoint may have been triggered. */ |
2369 | return PRINT_UNKNOWN; | |
2370 | break; | |
2371 | ||
2372 | case bp_read_watchpoint: | |
9dc5e2a9 | 2373 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2374 | ui_out_field_string |
2375 | (uiout, "reason", | |
2376 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2377 | mention (b); |
3b31d625 | 2378 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2379 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2380 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2381 | ui_out_field_stream (uiout, "value", stb); |
3b31d625 | 2382 | do_cleanups (ui_out_chain); |
8b93c638 | 2383 | ui_out_text (uiout, "\n"); |
917317f4 | 2384 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2385 | break; |
2386 | ||
2387 | case bp_access_watchpoint: | |
fa4727a6 | 2388 | if (bs->old_val != NULL) |
8b93c638 | 2389 | { |
4f8d1dc6 | 2390 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2391 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2392 | ui_out_field_string |
2393 | (uiout, "reason", | |
2394 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2395 | mention (b); |
3b31d625 | 2396 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2397 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2398 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2399 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2400 | ui_out_text (uiout, "\nNew value = "); |
2401 | } | |
2402 | else | |
2403 | { | |
4f8d1dc6 | 2404 | mention (b); |
9dc5e2a9 | 2405 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2406 | ui_out_field_string |
2407 | (uiout, "reason", | |
2408 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2409 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2410 | ui_out_text (uiout, "\nValue = "); |
2411 | } | |
fa4727a6 | 2412 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2413 | ui_out_field_stream (uiout, "new", stb); |
3b31d625 | 2414 | do_cleanups (ui_out_chain); |
8b93c638 | 2415 | ui_out_text (uiout, "\n"); |
917317f4 | 2416 | return PRINT_UNKNOWN; |
e514a9d6 | 2417 | break; |
4ce44c66 | 2418 | |
e514a9d6 JM |
2419 | /* Fall through, we don't deal with these types of breakpoints |
2420 | here. */ | |
2421 | ||
11cf8741 | 2422 | case bp_finish: |
9dc5e2a9 | 2423 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2424 | ui_out_field_string |
2425 | (uiout, "reason", | |
2426 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2427 | return PRINT_UNKNOWN; |
2428 | break; | |
2429 | ||
e514a9d6 | 2430 | case bp_until: |
9dc5e2a9 | 2431 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2432 | ui_out_field_string |
2433 | (uiout, "reason", | |
2434 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2435 | return PRINT_UNKNOWN; |
2436 | break; | |
2437 | ||
c2d11a7d | 2438 | case bp_none: |
e514a9d6 JM |
2439 | case bp_longjmp: |
2440 | case bp_longjmp_resume: | |
2441 | case bp_step_resume: | |
e514a9d6 JM |
2442 | case bp_watchpoint_scope: |
2443 | case bp_call_dummy: | |
2444 | default: | |
2445 | return PRINT_UNKNOWN; | |
2446 | } | |
2447 | } | |
2448 | ||
2449 | /* Generic routine for printing messages indicating why we | |
2450 | stopped. The behavior of this function depends on the value | |
2451 | 'print_it' in the bpstat structure. Under some circumstances we | |
2452 | may decide not to print anything here and delegate the task to | |
2453 | normal_stop(). */ | |
2454 | ||
2455 | static enum print_stop_action | |
2456 | print_bp_stop_message (bpstat bs) | |
2457 | { | |
2458 | switch (bs->print_it) | |
2459 | { | |
2460 | case print_it_noop: | |
2461 | /* Nothing should be printed for this bpstat entry. */ | |
2462 | return PRINT_UNKNOWN; | |
2463 | break; | |
2464 | ||
2465 | case print_it_done: | |
2466 | /* We still want to print the frame, but we already printed the | |
2467 | relevant messages. */ | |
2468 | return PRINT_SRC_AND_LOC; | |
2469 | break; | |
2470 | ||
2471 | case print_it_normal: | |
4f8d1dc6 | 2472 | { |
89f9893c | 2473 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2474 | struct breakpoint *b = bl ? bl->owner : NULL; |
2475 | ||
2476 | /* Normal case. Call the breakpoint's print_it method, or | |
2477 | print_it_typical. */ | |
2478 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2479 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2480 | return b->ops->print_it (b); | |
2481 | else | |
2482 | return print_it_typical (bs); | |
2483 | } | |
2484 | break; | |
3086aeae | 2485 | |
e514a9d6 | 2486 | default: |
8e65ff28 | 2487 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2488 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2489 | break; |
c906108c | 2490 | } |
c906108c SS |
2491 | } |
2492 | ||
e514a9d6 JM |
2493 | /* Print a message indicating what happened. This is called from |
2494 | normal_stop(). The input to this routine is the head of the bpstat | |
2495 | list - a list of the eventpoints that caused this stop. This | |
2496 | routine calls the generic print routine for printing a message | |
2497 | about reasons for stopping. This will print (for example) the | |
2498 | "Breakpoint n," part of the output. The return value of this | |
2499 | routine is one of: | |
c906108c | 2500 | |
917317f4 JM |
2501 | PRINT_UNKNOWN: Means we printed nothing |
2502 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2503 | code to print the location. An example is |
2504 | "Breakpoint 1, " which should be followed by | |
2505 | the location. | |
917317f4 | 2506 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2507 | to also print the location part of the message. |
2508 | An example is the catch/throw messages, which | |
917317f4 JM |
2509 | don't require a location appended to the end. |
2510 | PRINT_NOTHING: We have done some printing and we don't need any | |
2511 | further info to be printed.*/ | |
c906108c | 2512 | |
917317f4 | 2513 | enum print_stop_action |
fba45db2 | 2514 | bpstat_print (bpstat bs) |
c906108c SS |
2515 | { |
2516 | int val; | |
c5aa993b | 2517 | |
c906108c | 2518 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2519 | (Currently all watchpoints go on the bpstat whether hit or not. |
2520 | That probably could (should) be changed, provided care is taken | |
c906108c | 2521 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2522 | for (; bs; bs = bs->next) |
2523 | { | |
2524 | val = print_bp_stop_message (bs); | |
2525 | if (val == PRINT_SRC_ONLY | |
2526 | || val == PRINT_SRC_AND_LOC | |
2527 | || val == PRINT_NOTHING) | |
2528 | return val; | |
2529 | } | |
c906108c | 2530 | |
e514a9d6 JM |
2531 | /* We reached the end of the chain, or we got a null BS to start |
2532 | with and nothing was printed. */ | |
917317f4 | 2533 | return PRINT_UNKNOWN; |
c906108c SS |
2534 | } |
2535 | ||
2536 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2537 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2538 | The argument is a "struct expression *" that has been cast to char * to | |
2539 | make it pass through catch_errors. */ | |
2540 | ||
2541 | static int | |
4efb68b1 | 2542 | breakpoint_cond_eval (void *exp) |
c906108c | 2543 | { |
278cd55f | 2544 | struct value *mark = value_mark (); |
c5aa993b | 2545 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2546 | value_free_to_mark (mark); |
2547 | return i; | |
2548 | } | |
2549 | ||
2550 | /* Allocate a new bpstat and chain it to the current one. */ | |
2551 | ||
2552 | static bpstat | |
89f9893c | 2553 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2554 | { |
2555 | bpstat bs; | |
2556 | ||
2557 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2558 | cbs->next = bs; | |
4f8d1dc6 | 2559 | bs->breakpoint_at = bl; |
c906108c SS |
2560 | /* If the condition is false, etc., don't do the commands. */ |
2561 | bs->commands = NULL; | |
2562 | bs->old_val = NULL; | |
2563 | bs->print_it = print_it_normal; | |
2564 | return bs; | |
2565 | } | |
2566 | \f | |
d983da9c DJ |
2567 | /* The target has stopped with waitstatus WS. Check if any hardware |
2568 | watchpoints have triggered, according to the target. */ | |
2569 | ||
2570 | int | |
2571 | watchpoints_triggered (struct target_waitstatus *ws) | |
2572 | { | |
2573 | int stopped_by_watchpoint = STOPPED_BY_WATCHPOINT (*ws); | |
2574 | CORE_ADDR addr; | |
2575 | struct breakpoint *b; | |
2576 | ||
2577 | if (!stopped_by_watchpoint) | |
2578 | { | |
2579 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2580 | as not triggered. */ | |
2581 | ALL_BREAKPOINTS (b) | |
2582 | if (b->type == bp_hardware_watchpoint | |
2583 | || b->type == bp_read_watchpoint | |
2584 | || b->type == bp_access_watchpoint) | |
2585 | b->watchpoint_triggered = watch_triggered_no; | |
2586 | ||
2587 | return 0; | |
2588 | } | |
2589 | ||
2590 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2591 | { | |
2592 | /* We were stopped by a watchpoint, but we don't know where. | |
2593 | Mark all watchpoints as unknown. */ | |
2594 | ALL_BREAKPOINTS (b) | |
2595 | if (b->type == bp_hardware_watchpoint | |
2596 | || b->type == bp_read_watchpoint | |
2597 | || b->type == bp_access_watchpoint) | |
2598 | b->watchpoint_triggered = watch_triggered_unknown; | |
2599 | ||
2600 | return stopped_by_watchpoint; | |
2601 | } | |
2602 | ||
2603 | /* The target could report the data address. Mark watchpoints | |
2604 | affected by this data address as triggered, and all others as not | |
2605 | triggered. */ | |
2606 | ||
2607 | ALL_BREAKPOINTS (b) | |
2608 | if (b->type == bp_hardware_watchpoint | |
2609 | || b->type == bp_read_watchpoint | |
2610 | || b->type == bp_access_watchpoint) | |
2611 | { | |
a5606eee | 2612 | struct bp_location *loc; |
d983da9c DJ |
2613 | struct value *v; |
2614 | ||
2615 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2616 | for (loc = b->loc; loc; loc = loc->next) |
2617 | /* Exact match not required. Within range is | |
2618 | sufficient. */ | |
2619 | if (addr >= loc->address | |
2620 | && addr < loc->address + loc->length) | |
2621 | { | |
2622 | b->watchpoint_triggered = watch_triggered_yes; | |
2623 | break; | |
2624 | } | |
d983da9c DJ |
2625 | } |
2626 | ||
2627 | return 1; | |
2628 | } | |
2629 | ||
c906108c SS |
2630 | /* Possible return values for watchpoint_check (this can't be an enum |
2631 | because of check_errors). */ | |
2632 | /* The watchpoint has been deleted. */ | |
2633 | #define WP_DELETED 1 | |
2634 | /* The value has changed. */ | |
2635 | #define WP_VALUE_CHANGED 2 | |
2636 | /* The value has not changed. */ | |
2637 | #define WP_VALUE_NOT_CHANGED 3 | |
2638 | ||
2639 | #define BP_TEMPFLAG 1 | |
2640 | #define BP_HARDWAREFLAG 2 | |
2641 | ||
2642 | /* Check watchpoint condition. */ | |
2643 | ||
2644 | static int | |
4efb68b1 | 2645 | watchpoint_check (void *p) |
c906108c SS |
2646 | { |
2647 | bpstat bs = (bpstat) p; | |
2648 | struct breakpoint *b; | |
2649 | struct frame_info *fr; | |
2650 | int within_current_scope; | |
2651 | ||
4f8d1dc6 | 2652 | b = bs->breakpoint_at->owner; |
c906108c SS |
2653 | |
2654 | if (b->exp_valid_block == NULL) | |
2655 | within_current_scope = 1; | |
2656 | else | |
2657 | { | |
2658 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2659 | any chance of handling watchpoints on local variables, we'll need |
2660 | the frame chain (so we can determine if we're in scope). */ | |
2661 | reinit_frame_cache (); | |
101dcfbe | 2662 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2663 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2664 | |
2665 | /* If we've gotten confused in the unwinder, we might have | |
2666 | returned a frame that can't describe this variable. */ | |
2667 | if (within_current_scope | |
2668 | && block_function (b->exp_valid_block) != get_frame_function (fr)) | |
2669 | within_current_scope = 0; | |
2670 | ||
c12260ac CV |
2671 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2672 | in the function but the stack frame has already been invalidated. | |
2673 | Since we can't rely on the values of local variables after the | |
2674 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2675 | state as `not changed' without further checking. |
2676 | ||
2677 | vinschen/2003-09-04: The former implementation left out the case | |
2678 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2679 | because the current PC is currently in an epilogue. Calling | |
2680 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2681 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2682 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2683 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2684 | if (fr && within_current_scope) |
c906108c SS |
2685 | /* If we end up stopping, the current frame will get selected |
2686 | in normal_stop. So this call to select_frame won't affect | |
2687 | the user. */ | |
0f7d239c | 2688 | select_frame (fr); |
c906108c | 2689 | } |
c5aa993b | 2690 | |
c906108c SS |
2691 | if (within_current_scope) |
2692 | { | |
2693 | /* We use value_{,free_to_}mark because it could be a | |
2694 | *long* time before we return to the command level and | |
c5aa993b JM |
2695 | call free_all_values. We can't call free_all_values because |
2696 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2697 | |
278cd55f | 2698 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2699 | struct value *new_val; |
2700 | ||
2701 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2702 | if ((b->val != NULL) != (new_val != NULL) | |
2703 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2704 | { |
fa4727a6 DJ |
2705 | if (new_val != NULL) |
2706 | { | |
2707 | release_value (new_val); | |
2708 | value_free_to_mark (mark); | |
2709 | } | |
c906108c SS |
2710 | bs->old_val = b->val; |
2711 | b->val = new_val; | |
fa4727a6 | 2712 | b->val_valid = 1; |
c906108c SS |
2713 | /* We will stop here */ |
2714 | return WP_VALUE_CHANGED; | |
2715 | } | |
2716 | else | |
2717 | { | |
2718 | /* Nothing changed, don't do anything. */ | |
2719 | value_free_to_mark (mark); | |
2720 | /* We won't stop here */ | |
2721 | return WP_VALUE_NOT_CHANGED; | |
2722 | } | |
2723 | } | |
2724 | else | |
2725 | { | |
2726 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2727 | if we temporarily ignored the watchpoint, then when |
2728 | we reenter the block in which it is valid it contains | |
2729 | garbage (in the case of a function, it may have two | |
2730 | garbage values, one before and one after the prologue). | |
2731 | So we can't even detect the first assignment to it and | |
2732 | watch after that (since the garbage may or may not equal | |
2733 | the first value assigned). */ | |
4ce44c66 JM |
2734 | /* We print all the stop information in print_it_typical(), but |
2735 | in this case, by the time we call print_it_typical() this bp | |
2736 | will be deleted already. So we have no choice but print the | |
2737 | information here. */ | |
9dc5e2a9 | 2738 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2739 | ui_out_field_string |
2740 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2741 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2742 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2743 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2744 | which its expression is valid.\n"); | |
4ce44c66 | 2745 | |
c906108c | 2746 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2747 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2748 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2749 | |
2750 | return WP_DELETED; | |
2751 | } | |
2752 | } | |
2753 | ||
18a18393 VP |
2754 | /* Return true if it looks like target has stopped due to hitting |
2755 | breakpoint location BL. This function does not check if we | |
2756 | should stop, only if BL explains the stop. */ | |
2757 | static int | |
2758 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2759 | { | |
2760 | struct breakpoint *b = bl->owner; | |
2761 | ||
2762 | if (b->type != bp_watchpoint | |
2763 | && b->type != bp_hardware_watchpoint | |
2764 | && b->type != bp_read_watchpoint | |
2765 | && b->type != bp_access_watchpoint | |
2766 | && b->type != bp_hardware_breakpoint | |
2767 | && b->type != bp_catch_fork | |
2768 | && b->type != bp_catch_vfork | |
2769 | && b->type != bp_catch_exec) /* a non-watchpoint bp */ | |
2770 | { | |
2771 | if (bl->address != bp_addr) /* address doesn't match */ | |
2772 | return 0; | |
2773 | if (overlay_debugging /* unmapped overlay section */ | |
2774 | && section_is_overlay (bl->section) | |
2775 | && !section_is_mapped (bl->section)) | |
2776 | return 0; | |
2777 | } | |
2778 | ||
2779 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2780 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2781 | some data address). Otherwise gdb won't stop on a break instruction | |
2782 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2783 | been defined. Also skip watchpoints which we know did not trigger | |
2784 | (did not match the data address). */ | |
2785 | ||
2786 | if ((b->type == bp_hardware_watchpoint | |
2787 | || b->type == bp_read_watchpoint | |
2788 | || b->type == bp_access_watchpoint) | |
2789 | && b->watchpoint_triggered == watch_triggered_no) | |
2790 | return 0; | |
2791 | ||
2792 | if (b->type == bp_hardware_breakpoint) | |
2793 | { | |
2794 | if (bl->address != bp_addr) | |
2795 | return 0; | |
2796 | if (overlay_debugging /* unmapped overlay section */ | |
2797 | && section_is_overlay (bl->section) | |
2798 | && !section_is_mapped (bl->section)) | |
2799 | return 0; | |
2800 | } | |
2801 | ||
2802 | /* Is this a catchpoint of a load or unload? If so, did we | |
2803 | get a load or unload of the specified library? If not, | |
2804 | ignore it. */ | |
2805 | if ((b->type == bp_catch_load) | |
2806 | #if defined(SOLIB_HAVE_LOAD_EVENT) | |
2807 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) | |
2808 | || ((b->dll_pathname != NULL) | |
2809 | && (strcmp (b->dll_pathname, | |
2810 | SOLIB_LOADED_LIBRARY_PATHNAME ( | |
2811 | PIDGET (inferior_ptid))) | |
2812 | != 0))) | |
2813 | #endif | |
2814 | ) | |
2815 | return 0; | |
2816 | ||
2817 | if ((b->type == bp_catch_unload) | |
2818 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) | |
2819 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) | |
2820 | || ((b->dll_pathname != NULL) | |
2821 | && (strcmp (b->dll_pathname, | |
2822 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( | |
2823 | PIDGET (inferior_ptid))) | |
2824 | != 0))) | |
2825 | #endif | |
2826 | ) | |
2827 | return 0; | |
2828 | ||
2829 | if ((b->type == bp_catch_fork) | |
2830 | && !inferior_has_forked (PIDGET (inferior_ptid), | |
2831 | &b->forked_inferior_pid)) | |
2832 | return 0; | |
2833 | ||
2834 | if ((b->type == bp_catch_vfork) | |
2835 | && !inferior_has_vforked (PIDGET (inferior_ptid), | |
2836 | &b->forked_inferior_pid)) | |
2837 | return 0; | |
2838 | ||
2839 | if ((b->type == bp_catch_exec) | |
2840 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) | |
2841 | return 0; | |
2842 | ||
2843 | return 1; | |
2844 | } | |
2845 | ||
2846 | /* If BS refers to a watchpoint, determine if the watched values | |
2847 | has actually changed, and we should stop. If not, set BS->stop | |
2848 | to 0. */ | |
2849 | static void | |
2850 | bpstat_check_watchpoint (bpstat bs) | |
2851 | { | |
2852 | const struct bp_location *bl = bs->breakpoint_at; | |
2853 | struct breakpoint *b = bl->owner; | |
2854 | ||
2855 | if (b->type == bp_watchpoint | |
2856 | || b->type == bp_read_watchpoint | |
2857 | || b->type == bp_access_watchpoint | |
2858 | || b->type == bp_hardware_watchpoint) | |
2859 | { | |
2860 | CORE_ADDR addr; | |
2861 | struct value *v; | |
2862 | int must_check_value = 0; | |
2863 | ||
2864 | if (b->type == bp_watchpoint) | |
2865 | /* For a software watchpoint, we must always check the | |
2866 | watched value. */ | |
2867 | must_check_value = 1; | |
2868 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2869 | /* We have a hardware watchpoint (read, write, or access) | |
2870 | and the target earlier reported an address watched by | |
2871 | this watchpoint. */ | |
2872 | must_check_value = 1; | |
2873 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2874 | && b->type == bp_hardware_watchpoint) | |
2875 | /* We were stopped by a hardware watchpoint, but the target could | |
2876 | not report the data address. We must check the watchpoint's | |
2877 | value. Access and read watchpoints are out of luck; without | |
2878 | a data address, we can't figure it out. */ | |
2879 | must_check_value = 1; | |
2880 | ||
2881 | if (must_check_value) | |
2882 | { | |
2883 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2884 | b->number); | |
2885 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2886 | int e = catch_errors (watchpoint_check, bs, message, | |
2887 | RETURN_MASK_ALL); | |
2888 | do_cleanups (cleanups); | |
2889 | switch (e) | |
2890 | { | |
2891 | case WP_DELETED: | |
2892 | /* We've already printed what needs to be printed. */ | |
2893 | bs->print_it = print_it_done; | |
2894 | /* Stop. */ | |
2895 | break; | |
2896 | case WP_VALUE_CHANGED: | |
2897 | if (b->type == bp_read_watchpoint) | |
2898 | { | |
2899 | /* Don't stop: read watchpoints shouldn't fire if | |
2900 | the value has changed. This is for targets | |
2901 | which cannot set read-only watchpoints. */ | |
2902 | bs->print_it = print_it_noop; | |
2903 | bs->stop = 0; | |
2904 | } | |
2905 | break; | |
2906 | case WP_VALUE_NOT_CHANGED: | |
2907 | if (b->type == bp_hardware_watchpoint | |
2908 | || b->type == bp_watchpoint) | |
2909 | { | |
2910 | /* Don't stop: write watchpoints shouldn't fire if | |
2911 | the value hasn't changed. */ | |
2912 | bs->print_it = print_it_noop; | |
2913 | bs->stop = 0; | |
2914 | } | |
2915 | /* Stop. */ | |
2916 | break; | |
2917 | default: | |
2918 | /* Can't happen. */ | |
2919 | case 0: | |
2920 | /* Error from catch_errors. */ | |
2921 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2922 | if (b->related_breakpoint) | |
2923 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2924 | b->disposition = disp_del_at_next_stop; | |
2925 | /* We've already printed what needs to be printed. */ | |
2926 | bs->print_it = print_it_done; | |
2927 | break; | |
2928 | } | |
2929 | } | |
2930 | else /* must_check_value == 0 */ | |
2931 | { | |
2932 | /* This is a case where some watchpoint(s) triggered, but | |
2933 | not at the address of this watchpoint, or else no | |
2934 | watchpoint triggered after all. So don't print | |
2935 | anything for this watchpoint. */ | |
2936 | bs->print_it = print_it_noop; | |
2937 | bs->stop = 0; | |
2938 | } | |
2939 | } | |
2940 | } | |
2941 | ||
2942 | ||
2943 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2944 | of breakpoint referred to by BS. If we should not stop for this | |
2945 | breakpoint, set BS->stop to 0. */ | |
2946 | static void | |
2947 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
2948 | { | |
2949 | int thread_id = pid_to_thread_id (ptid); | |
2950 | const struct bp_location *bl = bs->breakpoint_at; | |
2951 | struct breakpoint *b = bl->owner; | |
2952 | ||
2953 | if (frame_id_p (b->frame_id) | |
2954 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
2955 | bs->stop = 0; | |
2956 | else if (bs->stop) | |
2957 | { | |
2958 | int value_is_zero = 0; | |
2959 | ||
2960 | /* If this is a scope breakpoint, mark the associated | |
2961 | watchpoint as triggered so that we will handle the | |
2962 | out-of-scope event. We'll get to the watchpoint next | |
2963 | iteration. */ | |
2964 | if (b->type == bp_watchpoint_scope) | |
2965 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
2966 | ||
2967 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
2968 | { | |
2969 | /* Need to select the frame, with all that implies | |
2970 | so that the conditions will have the right context. */ | |
2971 | select_frame (get_current_frame ()); | |
2972 | value_is_zero | |
2973 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
2974 | "Error in testing breakpoint condition:\n", | |
2975 | RETURN_MASK_ALL); | |
2976 | /* FIXME-someday, should give breakpoint # */ | |
2977 | free_all_values (); | |
2978 | } | |
2979 | if (bl->cond && value_is_zero) | |
2980 | { | |
2981 | bs->stop = 0; | |
2982 | } | |
2983 | else if (b->thread != -1 && b->thread != thread_id) | |
2984 | { | |
2985 | bs->stop = 0; | |
2986 | } | |
2987 | else if (b->ignore_count > 0) | |
2988 | { | |
2989 | b->ignore_count--; | |
2990 | annotate_ignore_count_change (); | |
2991 | bs->stop = 0; | |
2992 | /* Increase the hit count even though we don't | |
2993 | stop. */ | |
2994 | ++(b->hit_count); | |
2995 | } | |
2996 | } | |
2997 | } | |
2998 | ||
2999 | ||
9709f61c | 3000 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3001 | BP_ADDR in thread PTID. |
c906108c | 3002 | |
d983da9c | 3003 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
3004 | don't understand this stop. Result is a chain of bpstat's such that: |
3005 | ||
c5aa993b | 3006 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3007 | |
c5aa993b | 3008 | if we understand why we stopped, the result is not null. |
c906108c | 3009 | |
c5aa993b JM |
3010 | Each element of the chain refers to a particular breakpoint or |
3011 | watchpoint at which we have stopped. (We may have stopped for | |
3012 | several reasons concurrently.) | |
c906108c | 3013 | |
c5aa993b JM |
3014 | Each element of the chain has valid next, breakpoint_at, |
3015 | commands, FIXME??? fields. */ | |
c906108c SS |
3016 | |
3017 | bpstat | |
d983da9c | 3018 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3019 | { |
0d381245 | 3020 | struct breakpoint *b = NULL; |
89f9893c | 3021 | const struct bp_location *bl; |
c906108c SS |
3022 | /* Root of the chain of bpstat's */ |
3023 | struct bpstats root_bs[1]; | |
3024 | /* Pointer to the last thing in the chain currently. */ | |
3025 | bpstat bs = root_bs; | |
c906108c | 3026 | |
0d381245 | 3027 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3028 | { |
0d381245 VP |
3029 | b = bl->owner; |
3030 | gdb_assert (b); | |
468d015d | 3031 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3032 | continue; |
3033 | ||
a5606eee VP |
3034 | /* For hardware watchpoints, we look only at the first location. |
3035 | The watchpoint_check function will work on entire expression, | |
3036 | not the individual locations. For read watchopints, the | |
3037 | watchpoints_triggered function have checked all locations | |
3038 | alrea | |
3039 | */ | |
3040 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3041 | continue; | |
3042 | ||
18a18393 VP |
3043 | if (!bpstat_check_location (bl, bp_addr)) |
3044 | continue; | |
3045 | ||
c5aa993b JM |
3046 | /* Come here if it's a watchpoint, or if the break address matches */ |
3047 | ||
0d381245 | 3048 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3049 | |
18a18393 VP |
3050 | /* Assume we stop. Should we find watchpoint that is not actually |
3051 | triggered, or if condition of breakpoint is false, we'll reset | |
3052 | 'stop' to 0. */ | |
c5aa993b JM |
3053 | bs->stop = 1; |
3054 | bs->print = 1; | |
3055 | ||
18a18393 VP |
3056 | bpstat_check_watchpoint (bs); |
3057 | if (!bs->stop) | |
3058 | continue; | |
c5aa993b | 3059 | |
18a18393 VP |
3060 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3061 | /* We do not stop for these. */ | |
c5aa993b JM |
3062 | bs->stop = 0; |
3063 | else | |
18a18393 VP |
3064 | bpstat_check_breakpoint_conditions (bs, ptid); |
3065 | ||
3066 | if (bs->stop) | |
c5aa993b | 3067 | { |
18a18393 | 3068 | ++(b->hit_count); |
d983da9c | 3069 | |
18a18393 VP |
3070 | /* We will stop here */ |
3071 | if (b->disposition == disp_disable) | |
c5aa993b | 3072 | { |
18a18393 VP |
3073 | b->enable_state = bp_disabled; |
3074 | update_global_location_list (); | |
c5aa993b | 3075 | } |
18a18393 VP |
3076 | if (b->silent) |
3077 | bs->print = 0; | |
3078 | bs->commands = b->commands; | |
3079 | if (bs->commands && | |
3080 | (strcmp ("silent", bs->commands->line) == 0 | |
3081 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3082 | { |
18a18393 VP |
3083 | bs->commands = bs->commands->next; |
3084 | bs->print = 0; | |
c5aa993b | 3085 | } |
18a18393 | 3086 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3087 | } |
18a18393 | 3088 | |
c5aa993b JM |
3089 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3090 | if (bs->stop == 0 || bs->print == 0) | |
3091 | bs->print_it = print_it_noop; | |
3092 | } | |
c906108c SS |
3093 | |
3094 | bs->next = NULL; /* Terminate the chain */ | |
3095 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3096 | ||
d983da9c DJ |
3097 | /* If we aren't stopping, the value of some hardware watchpoint may |
3098 | not have changed, but the intermediate memory locations we are | |
3099 | watching may have. Don't bother if we're stopping; this will get | |
3100 | done later. */ | |
3101 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3102 | if (bs->stop) | |
3103 | break; | |
3104 | ||
3105 | if (bs == NULL) | |
3106 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3107 | if (!bs->stop | |
3108 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint | |
3109 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3110 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3111 | { | |
a5606eee VP |
3112 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3113 | location is no longer used by the watchpoint. Prevent | |
3114 | further code from trying to use it. */ | |
3115 | bs->breakpoint_at = NULL; | |
d983da9c DJ |
3116 | remove_breakpoints (); |
3117 | insert_breakpoints (); | |
3118 | break; | |
3119 | } | |
3120 | ||
3121 | return root_bs->next; | |
c906108c SS |
3122 | } |
3123 | \f | |
3124 | /* Tell what to do about this bpstat. */ | |
3125 | struct bpstat_what | |
fba45db2 | 3126 | bpstat_what (bpstat bs) |
c906108c SS |
3127 | { |
3128 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3129 | enum class |
3130 | { | |
3131 | /* This bpstat element has no effect on the main_action. */ | |
3132 | no_effect = 0, | |
3133 | ||
3134 | /* There was a watchpoint, stop but don't print. */ | |
3135 | wp_silent, | |
c906108c | 3136 | |
c5aa993b JM |
3137 | /* There was a watchpoint, stop and print. */ |
3138 | wp_noisy, | |
c906108c | 3139 | |
c5aa993b JM |
3140 | /* There was a breakpoint but we're not stopping. */ |
3141 | bp_nostop, | |
c906108c | 3142 | |
c5aa993b JM |
3143 | /* There was a breakpoint, stop but don't print. */ |
3144 | bp_silent, | |
c906108c | 3145 | |
c5aa993b JM |
3146 | /* There was a breakpoint, stop and print. */ |
3147 | bp_noisy, | |
c906108c | 3148 | |
c5aa993b JM |
3149 | /* We hit the longjmp breakpoint. */ |
3150 | long_jump, | |
c906108c | 3151 | |
c5aa993b JM |
3152 | /* We hit the longjmp_resume breakpoint. */ |
3153 | long_resume, | |
c906108c | 3154 | |
c5aa993b JM |
3155 | /* We hit the step_resume breakpoint. */ |
3156 | step_resume, | |
c906108c | 3157 | |
c5aa993b JM |
3158 | /* We hit the shared library event breakpoint. */ |
3159 | shlib_event, | |
c906108c | 3160 | |
c5aa993b JM |
3161 | /* We caught a shared library event. */ |
3162 | catch_shlib_event, | |
c906108c | 3163 | |
c5aa993b JM |
3164 | /* This is just used to count how many enums there are. */ |
3165 | class_last | |
c906108c SS |
3166 | }; |
3167 | ||
3168 | /* Here is the table which drives this routine. So that we can | |
3169 | format it pretty, we define some abbreviations for the | |
3170 | enum bpstat_what codes. */ | |
3171 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3172 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3173 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3174 | #define sgl BPSTAT_WHAT_SINGLE | |
3175 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3176 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3177 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c SS |
3178 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
3179 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3180 | ||
3181 | /* "Can't happen." Might want to print an error message. | |
3182 | abort() is not out of the question, but chances are GDB is just | |
3183 | a bit confused, not unusable. */ | |
3184 | #define err BPSTAT_WHAT_STOP_NOISY | |
3185 | ||
3186 | /* Given an old action and a class, come up with a new action. */ | |
3187 | /* One interesting property of this table is that wp_silent is the same | |
3188 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3189 | after stopping, the check for whether to step over a breakpoint | |
3190 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3191 | reference to how we stopped. We retain separate wp_silent and |
3192 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3193 | |
3194 | Another possibly interesting property of this table is that | |
3195 | there's a partial ordering, priority-like, of the actions. Once | |
3196 | you've decided that some action is appropriate, you'll never go | |
3197 | back and decide something of a lower priority is better. The | |
3198 | ordering is: | |
3199 | ||
4d5b2cd7 | 3200 | kc < clr sgl shl shlr slr sn sr ss |
78b6a731 | 3201 | sgl < shl shlr slr sn sr ss |
4d5b2cd7 | 3202 | slr < err shl shlr sn sr ss |
78b6a731 | 3203 | clr < err shl shlr sn sr ss |
4d5b2cd7 DJ |
3204 | ss < shl shlr sn sr |
3205 | sn < shl shlr sr | |
46d57086 DJ |
3206 | shl < shlr sr |
3207 | shlr < sr | |
4d5b2cd7 | 3208 | sr < |
c5aa993b | 3209 | |
43ff13b4 JM |
3210 | What I think this means is that we don't need a damned table |
3211 | here. If you just put the rows and columns in the right order, | |
3212 | it'd look awfully regular. We could simply walk the bpstat list | |
3213 | and choose the highest priority action we find, with a little | |
78b6a731 | 3214 | logic to handle the 'err' cases. */ |
c906108c SS |
3215 | |
3216 | /* step_resume entries: a step resume breakpoint overrides another | |
3217 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3218 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3219 | |
3220 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3221 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3222 | { | |
3223 | /* old action */ | |
78b6a731 | 3224 | /* kc ss sn sgl slr clr sr shl shlr |
c5aa993b JM |
3225 | */ |
3226 | /*no_effect */ | |
78b6a731 | 3227 | {kc, ss, sn, sgl, slr, clr, sr, shl, shlr}, |
c5aa993b | 3228 | /*wp_silent */ |
78b6a731 | 3229 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3230 | /*wp_noisy */ |
78b6a731 | 3231 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3232 | /*bp_nostop */ |
78b6a731 | 3233 | {sgl, ss, sn, sgl, slr, slr, sr, shl, shlr}, |
c5aa993b | 3234 | /*bp_silent */ |
78b6a731 | 3235 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3236 | /*bp_noisy */ |
78b6a731 | 3237 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3238 | /*long_jump */ |
78b6a731 | 3239 | {slr, ss, sn, slr, slr, err, sr, shl, shlr}, |
c5aa993b | 3240 | /*long_resume */ |
78b6a731 | 3241 | {clr, ss, sn, err, err, err, sr, shl, shlr}, |
c5aa993b | 3242 | /*step_resume */ |
78b6a731 | 3243 | {sr, sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3244 | /*shlib */ |
78b6a731 | 3245 | {shl, shl, shl, shl, shl, shl, sr, shl, shlr}, |
c5aa993b | 3246 | /*catch_shlib */ |
78b6a731 | 3247 | {shlr, shlr, shlr, shlr, shlr, shlr, sr, shlr, shlr} |
c5aa993b | 3248 | }; |
c906108c SS |
3249 | |
3250 | #undef kc | |
3251 | #undef ss | |
3252 | #undef sn | |
3253 | #undef sgl | |
3254 | #undef slr | |
3255 | #undef clr | |
c906108c SS |
3256 | #undef err |
3257 | #undef sr | |
3258 | #undef ts | |
3259 | #undef shl | |
3260 | #undef shlr | |
3261 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3262 | struct bpstat_what retval; | |
3263 | ||
3264 | retval.call_dummy = 0; | |
3265 | for (; bs != NULL; bs = bs->next) | |
3266 | { | |
3267 | enum class bs_class = no_effect; | |
3268 | if (bs->breakpoint_at == NULL) | |
3269 | /* I suspect this can happen if it was a momentary breakpoint | |
3270 | which has since been deleted. */ | |
3271 | continue; | |
4f8d1dc6 | 3272 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3273 | { |
3274 | case bp_none: | |
3275 | continue; | |
3276 | ||
3277 | case bp_breakpoint: | |
3278 | case bp_hardware_breakpoint: | |
3279 | case bp_until: | |
3280 | case bp_finish: | |
3281 | if (bs->stop) | |
3282 | { | |
3283 | if (bs->print) | |
3284 | bs_class = bp_noisy; | |
3285 | else | |
3286 | bs_class = bp_silent; | |
3287 | } | |
3288 | else | |
3289 | bs_class = bp_nostop; | |
3290 | break; | |
3291 | case bp_watchpoint: | |
3292 | case bp_hardware_watchpoint: | |
3293 | case bp_read_watchpoint: | |
3294 | case bp_access_watchpoint: | |
3295 | if (bs->stop) | |
3296 | { | |
3297 | if (bs->print) | |
3298 | bs_class = wp_noisy; | |
3299 | else | |
3300 | bs_class = wp_silent; | |
3301 | } | |
3302 | else | |
53a5351d JM |
3303 | /* There was a watchpoint, but we're not stopping. |
3304 | This requires no further action. */ | |
c906108c SS |
3305 | bs_class = no_effect; |
3306 | break; | |
3307 | case bp_longjmp: | |
3308 | bs_class = long_jump; | |
3309 | break; | |
3310 | case bp_longjmp_resume: | |
3311 | bs_class = long_resume; | |
3312 | break; | |
3313 | case bp_step_resume: | |
3314 | if (bs->stop) | |
3315 | { | |
3316 | bs_class = step_resume; | |
3317 | } | |
3318 | else | |
3319 | /* It is for the wrong frame. */ | |
3320 | bs_class = bp_nostop; | |
3321 | break; | |
c906108c SS |
3322 | case bp_watchpoint_scope: |
3323 | bs_class = bp_nostop; | |
3324 | break; | |
c5aa993b JM |
3325 | case bp_shlib_event: |
3326 | bs_class = shlib_event; | |
3327 | break; | |
c4093a6a | 3328 | case bp_thread_event: |
1900040c | 3329 | case bp_overlay_event: |
c4093a6a JM |
3330 | bs_class = bp_nostop; |
3331 | break; | |
c5aa993b JM |
3332 | case bp_catch_load: |
3333 | case bp_catch_unload: | |
3334 | /* Only if this catchpoint triggered should we cause the | |
3335 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3336 | catchpoint. */ | |
3337 | if (bs->stop) | |
3338 | bs_class = catch_shlib_event; | |
3339 | else | |
3340 | bs_class = no_effect; | |
3341 | break; | |
3342 | case bp_catch_fork: | |
3343 | case bp_catch_vfork: | |
3344 | case bp_catch_exec: | |
3345 | if (bs->stop) | |
3346 | { | |
3347 | if (bs->print) | |
3348 | bs_class = bp_noisy; | |
3349 | else | |
3350 | bs_class = bp_silent; | |
3351 | } | |
3352 | else | |
53a5351d JM |
3353 | /* There was a catchpoint, but we're not stopping. |
3354 | This requires no further action. */ | |
c5aa993b JM |
3355 | bs_class = no_effect; |
3356 | break; | |
c906108c | 3357 | case bp_call_dummy: |
53a5351d JM |
3358 | /* Make sure the action is stop (silent or noisy), |
3359 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3360 | bs_class = bp_silent; |
3361 | retval.call_dummy = 1; | |
3362 | break; | |
3363 | } | |
c5aa993b | 3364 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3365 | } |
3366 | retval.main_action = current_action; | |
3367 | return retval; | |
3368 | } | |
3369 | ||
3370 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3371 | without hardware support). This isn't related to a specific bpstat, | |
3372 | just to things like whether watchpoints are set. */ | |
3373 | ||
c5aa993b | 3374 | int |
fba45db2 | 3375 | bpstat_should_step (void) |
c906108c SS |
3376 | { |
3377 | struct breakpoint *b; | |
3378 | ALL_BREAKPOINTS (b) | |
468d015d | 3379 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3380 | return 1; |
c906108c SS |
3381 | return 0; |
3382 | } | |
3383 | ||
c906108c | 3384 | \f |
c5aa993b | 3385 | |
c906108c SS |
3386 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3387 | function returns another bpstat which contains only the catchpoints | |
3388 | on that first list, if any. */ | |
3389 | void | |
fba45db2 | 3390 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3391 | { |
3392 | struct bpstats root_bs[1]; | |
3393 | bpstat bs = root_bs; | |
3394 | struct breakpoint *ep; | |
3395 | char *dll_pathname; | |
3396 | ||
c906108c SS |
3397 | bpstat_clear (cp_list); |
3398 | root_bs->next = NULL; | |
c5aa993b JM |
3399 | |
3400 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3401 | { |
3402 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
4f8d1dc6 | 3403 | ep = ep_list->breakpoint_at->owner; |
c906108c | 3404 | if (ep == NULL) |
c5aa993b JM |
3405 | break; |
3406 | if ((ep->type != bp_catch_load) && | |
dfdfb3ca | 3407 | (ep->type != bp_catch_unload)) |
53a5351d | 3408 | /* pai: (temp) ADD fork/vfork here!! */ |
c5aa993b JM |
3409 | continue; |
3410 | ||
c906108c | 3411 | /* Yes; add it to the list. */ |
4f8d1dc6 | 3412 | bs = bpstat_alloc (ep_list->breakpoint_at, bs); |
c906108c SS |
3413 | *bs = *ep_list; |
3414 | bs->next = NULL; | |
3415 | bs = root_bs->next; | |
c5aa993b | 3416 | |
c906108c SS |
3417 | #if defined(SOLIB_ADD) |
3418 | /* Also, for each triggered catchpoint, tag it with the name of | |
3419 | the library that caused this trigger. (We copy the name now, | |
3420 | because it's only guaranteed to be available NOW, when the | |
3421 | catchpoint triggers. Clients who may wish to know the name | |
3422 | later must get it from the catchpoint itself.) */ | |
3423 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3424 | xfree (ep->triggered_dll_pathname); |
c906108c | 3425 | if (ep->type == bp_catch_load) |
39f77062 KB |
3426 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3427 | PIDGET (inferior_ptid)); | |
c906108c | 3428 | else |
39f77062 KB |
3429 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3430 | PIDGET (inferior_ptid)); | |
c906108c SS |
3431 | #else |
3432 | dll_pathname = NULL; | |
3433 | #endif | |
3434 | if (dll_pathname) | |
3435 | { | |
53a5351d JM |
3436 | ep->triggered_dll_pathname = (char *) |
3437 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3438 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3439 | } | |
3440 | else | |
3441 | ep->triggered_dll_pathname = NULL; | |
3442 | } | |
c5aa993b | 3443 | |
c906108c SS |
3444 | *cp_list = bs; |
3445 | } | |
3446 | ||
0d381245 VP |
3447 | static void print_breakpoint_location (struct breakpoint *b, |
3448 | struct bp_location *loc, | |
3449 | char *wrap_indent, | |
3450 | struct ui_stream *stb) | |
3451 | { | |
3452 | if (b->source_file) | |
3453 | { | |
3454 | struct symbol *sym | |
3455 | = find_pc_sect_function (loc->address, loc->section); | |
3456 | if (sym) | |
3457 | { | |
3458 | ui_out_text (uiout, "in "); | |
3459 | ui_out_field_string (uiout, "func", | |
3460 | SYMBOL_PRINT_NAME (sym)); | |
3461 | ui_out_wrap_hint (uiout, wrap_indent); | |
3462 | ui_out_text (uiout, " at "); | |
3463 | } | |
3464 | ui_out_field_string (uiout, "file", b->source_file); | |
3465 | ui_out_text (uiout, ":"); | |
3466 | ||
3467 | if (ui_out_is_mi_like_p (uiout)) | |
3468 | { | |
3469 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3470 | char *fullname = symtab_to_fullname (sal.symtab); | |
3471 | ||
3472 | if (fullname) | |
3473 | ui_out_field_string (uiout, "fullname", fullname); | |
3474 | } | |
3475 | ||
3476 | ui_out_field_int (uiout, "line", b->line_number); | |
3477 | } | |
3478 | else if (!b->loc) | |
3479 | { | |
3480 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3481 | } | |
3482 | else | |
3483 | { | |
3484 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3485 | ui_out_field_stream (uiout, "at", stb); | |
3486 | } | |
3487 | } | |
3488 | ||
c4093a6a | 3489 | /* Print B to gdb_stdout. */ |
c906108c | 3490 | static void |
0d381245 VP |
3491 | print_one_breakpoint_location (struct breakpoint *b, |
3492 | struct bp_location *loc, | |
3493 | int loc_number, | |
3494 | CORE_ADDR *last_addr) | |
c906108c | 3495 | { |
52f0bd74 AC |
3496 | struct command_line *l; |
3497 | struct symbol *sym; | |
c4093a6a JM |
3498 | struct ep_type_description |
3499 | { | |
3500 | enum bptype type; | |
3501 | char *description; | |
3502 | }; | |
3503 | static struct ep_type_description bptypes[] = | |
c906108c | 3504 | { |
c5aa993b JM |
3505 | {bp_none, "?deleted?"}, |
3506 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3507 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3508 | {bp_until, "until"}, |
3509 | {bp_finish, "finish"}, | |
3510 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3511 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3512 | {bp_read_watchpoint, "read watchpoint"}, |
3513 | {bp_access_watchpoint, "acc watchpoint"}, | |
3514 | {bp_longjmp, "longjmp"}, | |
3515 | {bp_longjmp_resume, "longjmp resume"}, | |
3516 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3517 | {bp_watchpoint_scope, "watchpoint scope"}, |
3518 | {bp_call_dummy, "call dummy"}, | |
3519 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3520 | {bp_thread_event, "thread events"}, |
1900040c | 3521 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3522 | {bp_catch_load, "catch load"}, |
3523 | {bp_catch_unload, "catch unload"}, | |
3524 | {bp_catch_fork, "catch fork"}, | |
3525 | {bp_catch_vfork, "catch vfork"}, | |
dfdfb3ca | 3526 | {bp_catch_exec, "catch exec"} |
c5aa993b | 3527 | }; |
c4093a6a | 3528 | |
c2c6d25f | 3529 | static char bpenables[] = "nynny"; |
c906108c | 3530 | char wrap_indent[80]; |
8b93c638 JM |
3531 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3532 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3533 | struct cleanup *bkpt_chain; |
c906108c | 3534 | |
0d381245 VP |
3535 | int header_of_multiple = 0; |
3536 | int part_of_multiple = (loc != NULL); | |
3537 | ||
3538 | gdb_assert (!loc || loc_number != 0); | |
3539 | /* See comment in print_one_breakpoint concerning | |
3540 | treatment of breakpoints with single disabled | |
3541 | location. */ | |
3542 | if (loc == NULL | |
3543 | && (b->loc != NULL | |
3544 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3545 | header_of_multiple = 1; | |
3546 | if (loc == NULL) | |
3547 | loc = b->loc; | |
3548 | ||
c4093a6a | 3549 | annotate_record (); |
3b31d625 | 3550 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3551 | |
3552 | /* 1 */ | |
3553 | annotate_field (0); | |
0d381245 VP |
3554 | if (part_of_multiple) |
3555 | { | |
3556 | char *formatted; | |
0c6773c1 | 3557 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3558 | ui_out_field_string (uiout, "number", formatted); |
3559 | xfree (formatted); | |
3560 | } | |
3561 | else | |
3562 | { | |
3563 | ui_out_field_int (uiout, "number", b->number); | |
3564 | } | |
c4093a6a JM |
3565 | |
3566 | /* 2 */ | |
3567 | annotate_field (1); | |
0d381245 VP |
3568 | if (part_of_multiple) |
3569 | ui_out_field_skip (uiout, "type"); | |
3570 | else | |
3571 | { | |
3572 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3573 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3574 | internal_error (__FILE__, __LINE__, | |
3575 | _("bptypes table does not describe type #%d."), | |
3576 | (int) b->type); | |
3577 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3578 | } | |
c4093a6a JM |
3579 | |
3580 | /* 3 */ | |
3581 | annotate_field (2); | |
0d381245 VP |
3582 | if (part_of_multiple) |
3583 | ui_out_field_skip (uiout, "disp"); | |
3584 | else | |
2cec12e5 | 3585 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3586 | |
c4093a6a JM |
3587 | |
3588 | /* 4 */ | |
3589 | annotate_field (3); | |
0d381245 | 3590 | if (part_of_multiple) |
54e52265 | 3591 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3592 | else |
54e52265 VP |
3593 | ui_out_field_fmt (uiout, "enabled", "%c", |
3594 | bpenables[(int) b->enable_state]); | |
3595 | ui_out_spaces (uiout, 2); | |
0d381245 | 3596 | |
c4093a6a JM |
3597 | |
3598 | /* 5 and 6 */ | |
3599 | strcpy (wrap_indent, " "); | |
3600 | if (addressprint) | |
75ac9d7b | 3601 | { |
17a912b6 | 3602 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3603 | strcat (wrap_indent, " "); |
3604 | else | |
3605 | strcat (wrap_indent, " "); | |
3606 | } | |
c906108c | 3607 | |
3086aeae | 3608 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3609 | { |
3610 | /* Although the print_one can possibly print | |
3611 | all locations, calling it here is not likely | |
3612 | to get any nice result. So, make sure there's | |
3613 | just one location. */ | |
3614 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3615 | b->ops->print_one (b, last_addr); | |
3616 | } | |
3086aeae DJ |
3617 | else |
3618 | switch (b->type) | |
3619 | { | |
3620 | case bp_none: | |
3621 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3622 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3623 | break; |
c906108c | 3624 | |
3086aeae DJ |
3625 | case bp_watchpoint: |
3626 | case bp_hardware_watchpoint: | |
3627 | case bp_read_watchpoint: | |
3628 | case bp_access_watchpoint: | |
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 | print_expression (b->exp, stb->stream); | |
3636 | ui_out_field_stream (uiout, "what", stb); | |
3637 | break; | |
3638 | ||
3639 | case bp_catch_load: | |
3640 | case bp_catch_unload: | |
3641 | /* Field 4, the address, is omitted (which makes the columns | |
3642 | not line up too nicely with the headers, but the effect | |
3643 | is relatively readable). */ | |
3644 | if (addressprint) | |
3645 | ui_out_field_skip (uiout, "addr"); | |
3646 | annotate_field (5); | |
3647 | if (b->dll_pathname == NULL) | |
3648 | { | |
3649 | ui_out_field_string (uiout, "what", "<any library>"); | |
3650 | ui_out_spaces (uiout, 1); | |
3651 | } | |
3652 | else | |
3653 | { | |
3654 | ui_out_text (uiout, "library \""); | |
3655 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3656 | ui_out_text (uiout, "\" "); | |
3657 | } | |
3658 | break; | |
3659 | ||
3660 | case bp_catch_fork: | |
3661 | case bp_catch_vfork: | |
3662 | /* Field 4, the address, is omitted (which makes the columns | |
3663 | not line up too nicely with the headers, but the effect | |
3664 | is relatively readable). */ | |
3665 | if (addressprint) | |
3666 | ui_out_field_skip (uiout, "addr"); | |
3667 | annotate_field (5); | |
3668 | if (b->forked_inferior_pid != 0) | |
3669 | { | |
3670 | ui_out_text (uiout, "process "); | |
3671 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3672 | ui_out_spaces (uiout, 1); | |
3673 | } | |
0f699bbe | 3674 | break; |
3086aeae DJ |
3675 | |
3676 | case bp_catch_exec: | |
3677 | /* Field 4, the address, is omitted (which makes the columns | |
3678 | not line up too nicely with the headers, but the effect | |
3679 | is relatively readable). */ | |
3680 | if (addressprint) | |
3681 | ui_out_field_skip (uiout, "addr"); | |
3682 | annotate_field (5); | |
3683 | if (b->exec_pathname != NULL) | |
3684 | { | |
3685 | ui_out_text (uiout, "program \""); | |
3686 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3687 | ui_out_text (uiout, "\" "); | |
3688 | } | |
3689 | break; | |
3690 | ||
3086aeae DJ |
3691 | case bp_breakpoint: |
3692 | case bp_hardware_breakpoint: | |
3693 | case bp_until: | |
3694 | case bp_finish: | |
3695 | case bp_longjmp: | |
3696 | case bp_longjmp_resume: | |
3697 | case bp_step_resume: | |
3086aeae DJ |
3698 | case bp_watchpoint_scope: |
3699 | case bp_call_dummy: | |
3700 | case bp_shlib_event: | |
3701 | case bp_thread_event: | |
3702 | case bp_overlay_event: | |
3703 | if (addressprint) | |
3704 | { | |
3705 | annotate_field (4); | |
54e52265 | 3706 | if (header_of_multiple) |
0d381245 | 3707 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3708 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3709 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3710 | else |
0d381245 | 3711 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3712 | } |
3713 | annotate_field (5); | |
0d381245 VP |
3714 | if (!header_of_multiple) |
3715 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3716 | if (b->loc) | |
3717 | *last_addr = b->loc->address; | |
3086aeae DJ |
3718 | break; |
3719 | } | |
c906108c | 3720 | |
0d381245 | 3721 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 3722 | { |
8b93c638 JM |
3723 | /* FIXME: This seems to be redundant and lost here; see the |
3724 | "stop only in" line a little further down. */ | |
3725 | ui_out_text (uiout, " thread "); | |
3726 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3727 | } |
3728 | ||
8b93c638 | 3729 | ui_out_text (uiout, "\n"); |
c4093a6a | 3730 | |
0d381245 | 3731 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3732 | { |
3733 | annotate_field (6); | |
8b93c638 | 3734 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3735 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3736 | the frame ID. */ | |
d0a55772 | 3737 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3738 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3739 | } |
3740 | ||
0d381245 | 3741 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3742 | { |
f7f9143b JB |
3743 | /* We do not print the condition for Ada exception catchpoints |
3744 | because the condition is an internal implementation detail | |
3745 | that we do not want to expose to the user. */ | |
c4093a6a | 3746 | annotate_field (7); |
8b93c638 | 3747 | ui_out_text (uiout, "\tstop only if "); |
0101ce28 JJ |
3748 | ui_out_field_string (uiout, "cond", b->cond_string); |
3749 | ui_out_text (uiout, "\n"); | |
3750 | } | |
3751 | ||
0d381245 | 3752 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3753 | { |
3754 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3755 | ui_out_text (uiout, "\tstop only in thread "); |
3756 | ui_out_field_int (uiout, "thread", b->thread); | |
3757 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3758 | } |
3759 | ||
0d381245 | 3760 | if (!part_of_multiple && show_breakpoint_hit_counts && b->hit_count) |
c4093a6a JM |
3761 | { |
3762 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3763 | if (ep_is_catchpoint (b)) |
3764 | ui_out_text (uiout, "\tcatchpoint"); | |
3765 | else | |
3766 | ui_out_text (uiout, "\tbreakpoint"); | |
3767 | ui_out_text (uiout, " already hit "); | |
3768 | ui_out_field_int (uiout, "times", b->hit_count); | |
3769 | if (b->hit_count == 1) | |
3770 | ui_out_text (uiout, " time\n"); | |
3771 | else | |
3772 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3773 | } |
3774 | ||
fb40c209 AC |
3775 | /* Output the count also if it is zero, but only if this is |
3776 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3777 | if (ui_out_is_mi_like_p (uiout)) |
0d381245 | 3778 | if (!part_of_multiple && show_breakpoint_hit_counts && b->hit_count == 0) |
fb40c209 | 3779 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3780 | |
0d381245 | 3781 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3782 | { |
3783 | annotate_field (8); | |
8b93c638 JM |
3784 | ui_out_text (uiout, "\tignore next "); |
3785 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3786 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3787 | } |
3788 | ||
0d381245 | 3789 | if (!part_of_multiple && (l = b->commands)) |
c4093a6a | 3790 | { |
3b31d625 EZ |
3791 | struct cleanup *script_chain; |
3792 | ||
c4093a6a | 3793 | annotate_field (9); |
3b31d625 | 3794 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3795 | print_command_lines (uiout, l, 4); |
3b31d625 | 3796 | do_cleanups (script_chain); |
c4093a6a | 3797 | } |
d24317b4 VP |
3798 | |
3799 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) | |
3800 | { | |
3801 | if (b->addr_string) | |
3802 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3803 | else if (b->exp_string) | |
3804 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3805 | } | |
3806 | ||
3b31d625 | 3807 | do_cleanups (bkpt_chain); |
8b93c638 | 3808 | do_cleanups (old_chain); |
c4093a6a | 3809 | } |
c5aa993b | 3810 | |
0d381245 VP |
3811 | static void |
3812 | print_one_breakpoint (struct breakpoint *b, | |
3813 | CORE_ADDR *last_addr) | |
3814 | { | |
3815 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3816 | ||
3817 | /* If this breakpoint has custom print function, | |
3818 | it's already printed. Otherwise, print individual | |
3819 | locations, if any. */ | |
3820 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3821 | { | |
3822 | /* If breakpoint has a single location that is | |
3823 | disabled, we print it as if it had | |
3824 | several locations, since otherwise it's hard to | |
3825 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3826 | situation. |
3827 | Note that while hardware watchpoints have | |
3828 | several locations internally, that's no a property | |
3829 | exposed to user. */ | |
0d381245 | 3830 | if (b->loc |
a5606eee | 3831 | && !is_hardware_watchpoint (b) |
0d381245 | 3832 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3833 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3834 | { |
3835 | struct bp_location *loc; | |
3836 | int n = 1; | |
3837 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3838 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3839 | } | |
3840 | } | |
3841 | } | |
3842 | ||
3843 | ||
c4093a6a JM |
3844 | struct captured_breakpoint_query_args |
3845 | { | |
3846 | int bnum; | |
3847 | }; | |
c5aa993b | 3848 | |
c4093a6a | 3849 | static int |
2b65245e | 3850 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3851 | { |
3852 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3853 | struct breakpoint *b; |
c4093a6a JM |
3854 | CORE_ADDR dummy_addr = 0; |
3855 | ALL_BREAKPOINTS (b) | |
3856 | { | |
3857 | if (args->bnum == b->number) | |
c5aa993b | 3858 | { |
c4093a6a JM |
3859 | print_one_breakpoint (b, &dummy_addr); |
3860 | return GDB_RC_OK; | |
c5aa993b | 3861 | } |
c4093a6a JM |
3862 | } |
3863 | return GDB_RC_NONE; | |
3864 | } | |
c5aa993b | 3865 | |
c4093a6a | 3866 | enum gdb_rc |
ce43223b | 3867 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3868 | { |
3869 | struct captured_breakpoint_query_args args; | |
3870 | args.bnum = bnum; | |
3871 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3872 | an error. */ | |
b0b13bb4 DJ |
3873 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3874 | error_message, RETURN_MASK_ALL) < 0) | |
3875 | return GDB_RC_FAIL; | |
3876 | else | |
3877 | return GDB_RC_OK; | |
c4093a6a | 3878 | } |
c5aa993b | 3879 | |
7f3b0473 AC |
3880 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3881 | catchpoints, et.al.). */ | |
3882 | ||
3883 | static int | |
3884 | user_settable_breakpoint (const struct breakpoint *b) | |
3885 | { | |
3886 | return (b->type == bp_breakpoint | |
3887 | || b->type == bp_catch_load | |
3888 | || b->type == bp_catch_unload | |
3889 | || b->type == bp_catch_fork | |
3890 | || b->type == bp_catch_vfork | |
3891 | || b->type == bp_catch_exec | |
7f3b0473 AC |
3892 | || b->type == bp_hardware_breakpoint |
3893 | || b->type == bp_watchpoint | |
3894 | || b->type == bp_read_watchpoint | |
3895 | || b->type == bp_access_watchpoint | |
3896 | || b->type == bp_hardware_watchpoint); | |
3897 | } | |
3898 | ||
3899 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3900 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3901 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3902 | |
c4093a6a | 3903 | static void |
fba45db2 | 3904 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3905 | { |
52f0bd74 | 3906 | struct breakpoint *b; |
c4093a6a | 3907 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3908 | int nr_printable_breakpoints; |
3b31d625 | 3909 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3910 | |
7f3b0473 AC |
3911 | /* Compute the number of rows in the table. */ |
3912 | nr_printable_breakpoints = 0; | |
3913 | ALL_BREAKPOINTS (b) | |
3914 | if (bnum == -1 | |
3915 | || bnum == b->number) | |
3916 | { | |
3917 | if (allflag || user_settable_breakpoint (b)) | |
3918 | nr_printable_breakpoints++; | |
3919 | } | |
3920 | ||
8b93c638 | 3921 | if (addressprint) |
3b31d625 EZ |
3922 | bkpttbl_chain |
3923 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3924 | "BreakpointTable"); | |
8b93c638 | 3925 | else |
3b31d625 EZ |
3926 | bkpttbl_chain |
3927 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3928 | "BreakpointTable"); | |
8b93c638 | 3929 | |
7f3b0473 | 3930 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3931 | annotate_breakpoints_headers (); |
3932 | if (nr_printable_breakpoints > 0) | |
3933 | annotate_field (0); | |
0d381245 | 3934 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3935 | if (nr_printable_breakpoints > 0) |
3936 | annotate_field (1); | |
3937 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3938 | if (nr_printable_breakpoints > 0) | |
3939 | annotate_field (2); | |
3940 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3941 | if (nr_printable_breakpoints > 0) | |
3942 | annotate_field (3); | |
54e52265 | 3943 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
d7faa9e7 | 3944 | if (addressprint) |
7f3b0473 | 3945 | { |
d7faa9e7 AC |
3946 | if (nr_printable_breakpoints > 0) |
3947 | annotate_field (4); | |
17a912b6 | 3948 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3949 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3950 | else |
b25959ec | 3951 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3952 | } |
d7faa9e7 AC |
3953 | if (nr_printable_breakpoints > 0) |
3954 | annotate_field (5); | |
3955 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3956 | ui_out_table_body (uiout); | |
3957 | if (nr_printable_breakpoints > 0) | |
3958 | annotate_breakpoints_table (); | |
7f3b0473 | 3959 | |
c4093a6a JM |
3960 | ALL_BREAKPOINTS (b) |
3961 | if (bnum == -1 | |
3962 | || bnum == b->number) | |
3963 | { | |
3964 | /* We only print out user settable breakpoints unless the | |
3965 | allflag is set. */ | |
7f3b0473 AC |
3966 | if (allflag || user_settable_breakpoint (b)) |
3967 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3968 | } |
3969 | ||
3b31d625 | 3970 | do_cleanups (bkpttbl_chain); |
698384cd | 3971 | |
7f3b0473 | 3972 | if (nr_printable_breakpoints == 0) |
c906108c | 3973 | { |
8b93c638 JM |
3974 | if (bnum == -1) |
3975 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3976 | else | |
3977 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3978 | bnum); | |
c906108c SS |
3979 | } |
3980 | else | |
c4093a6a JM |
3981 | { |
3982 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3983 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3984 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
c4093a6a JM |
3985 | set_next_address (last_addr); |
3986 | } | |
c906108c | 3987 | |
c4093a6a JM |
3988 | /* FIXME? Should this be moved up so that it is only called when |
3989 | there have been breakpoints? */ | |
c906108c SS |
3990 | annotate_breakpoints_table_end (); |
3991 | } | |
3992 | ||
c906108c | 3993 | static void |
fba45db2 | 3994 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3995 | { |
3996 | int bnum = -1; | |
3997 | ||
3998 | if (bnum_exp) | |
bb518678 | 3999 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4000 | |
4001 | breakpoint_1 (bnum, 0); | |
4002 | } | |
4003 | ||
7a292a7a | 4004 | static void |
fba45db2 | 4005 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4006 | { |
4007 | int bnum = -1; | |
4008 | ||
4009 | if (bnum_exp) | |
bb518678 | 4010 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4011 | |
4012 | breakpoint_1 (bnum, 1); | |
4013 | } | |
4014 | ||
0d381245 VP |
4015 | static int |
4016 | breakpoint_has_pc (struct breakpoint *b, CORE_ADDR pc, asection *section) | |
4017 | { | |
4018 | struct bp_location *bl = b->loc; | |
4019 | for (; bl; bl = bl->next) | |
4020 | { | |
4021 | if (bl->address == pc | |
4022 | && (!overlay_debugging || bl->section == section)) | |
4023 | return 1; | |
4024 | } | |
4025 | return 0; | |
4026 | } | |
4027 | ||
c906108c SS |
4028 | /* Print a message describing any breakpoints set at PC. */ |
4029 | ||
4030 | static void | |
d674a25c | 4031 | describe_other_breakpoints (CORE_ADDR pc, asection *section, int thread) |
c906108c | 4032 | { |
52f0bd74 AC |
4033 | int others = 0; |
4034 | struct breakpoint *b; | |
c906108c SS |
4035 | |
4036 | ALL_BREAKPOINTS (b) | |
0d381245 | 4037 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4038 | if (others > 0) |
4039 | { | |
a3f17187 AC |
4040 | if (others == 1) |
4041 | printf_filtered (_("Note: breakpoint ")); | |
4042 | else /* if (others == ???) */ | |
4043 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4044 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4045 | if (breakpoint_has_pc (b, pc, section)) |
4046 | { | |
4047 | others--; | |
4048 | printf_filtered ("%d", b->number); | |
4049 | if (b->thread == -1 && thread != -1) | |
4050 | printf_filtered (" (all threads)"); | |
4051 | else if (b->thread != -1) | |
4052 | printf_filtered (" (thread %d)", b->thread); | |
4053 | printf_filtered ("%s%s ", | |
4054 | ((b->enable_state == bp_disabled || | |
4055 | b->enable_state == bp_call_disabled) | |
4056 | ? " (disabled)" | |
4057 | : b->enable_state == bp_permanent | |
4058 | ? " (permanent)" | |
4059 | : ""), | |
4060 | (others > 1) ? "," | |
4061 | : ((others == 1) ? " and" : "")); | |
4062 | } | |
a3f17187 | 4063 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4064 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4065 | printf_filtered (".\n"); |
4066 | } | |
4067 | } | |
4068 | \f | |
4069 | /* Set the default place to put a breakpoint | |
4070 | for the `break' command with no arguments. */ | |
4071 | ||
4072 | void | |
fba45db2 KB |
4073 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4074 | int line) | |
c906108c SS |
4075 | { |
4076 | default_breakpoint_valid = valid; | |
4077 | default_breakpoint_address = addr; | |
4078 | default_breakpoint_symtab = symtab; | |
4079 | default_breakpoint_line = line; | |
4080 | } | |
4081 | ||
e4f237da KB |
4082 | /* Return true iff it is meaningful to use the address member of |
4083 | BPT. For some breakpoint types, the address member is irrelevant | |
4084 | and it makes no sense to attempt to compare it to other addresses | |
4085 | (or use it for any other purpose either). | |
4086 | ||
4087 | More specifically, each of the following breakpoint types will always | |
4088 | have a zero valued address and we don't want check_duplicates() to mark | |
4089 | breakpoints of any of these types to be a duplicate of an actual | |
4090 | breakpoint at address zero: | |
4091 | ||
4092 | bp_watchpoint | |
4093 | bp_hardware_watchpoint | |
4094 | bp_read_watchpoint | |
4095 | bp_access_watchpoint | |
4096 | bp_catch_exec | |
4097 | bp_longjmp_resume | |
4098 | bp_catch_fork | |
4099 | bp_catch_vork */ | |
4100 | ||
4101 | static int | |
4102 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4103 | { | |
4104 | enum bptype type = bpt->type; | |
4105 | ||
4106 | return (type != bp_watchpoint | |
4107 | && type != bp_hardware_watchpoint | |
4108 | && type != bp_read_watchpoint | |
4109 | && type != bp_access_watchpoint | |
4110 | && type != bp_catch_exec | |
4111 | && type != bp_longjmp_resume | |
4112 | && type != bp_catch_fork | |
4113 | && type != bp_catch_vfork); | |
4114 | } | |
4115 | ||
9f60f21b | 4116 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4117 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4118 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4119 | If we have a permanent breakpoint at the same place as BPT, make |
4120 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4121 | |
4122 | static void | |
0d381245 | 4123 | check_duplicates_for (CORE_ADDR address, asection *section) |
c906108c | 4124 | { |
075f6582 | 4125 | struct bp_location *b; |
52f0bd74 | 4126 | int count = 0; |
075f6582 | 4127 | struct bp_location *perm_bp = 0; |
c906108c | 4128 | |
075f6582 DJ |
4129 | ALL_BP_LOCATIONS (b) |
4130 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4131 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4132 | && b->enabled |
4133 | && !b->shlib_disabled | |
075f6582 DJ |
4134 | && b->address == address /* address / overlay match */ |
4135 | && (!overlay_debugging || b->section == section) | |
4136 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4137 | { |
c2c6d25f | 4138 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4139 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4140 | { |
4141 | perm_bp = b; | |
4142 | break; | |
4143 | } | |
4144 | ||
c5aa993b | 4145 | count++; |
075f6582 | 4146 | b->duplicate = count > 1; |
c5aa993b | 4147 | } |
c2c6d25f JM |
4148 | |
4149 | /* If we found a permanent breakpoint at this address, go over the | |
4150 | list again and declare all the other breakpoints there to be the | |
4151 | duplicates. */ | |
4152 | if (perm_bp) | |
4153 | { | |
075f6582 | 4154 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4155 | |
4156 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4157 | if (! perm_bp->inserted) |
8e65ff28 | 4158 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4159 | _("allegedly permanent breakpoint is not " |
4160 | "actually inserted")); | |
c2c6d25f | 4161 | |
075f6582 | 4162 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4163 | if (b != perm_bp) |
4164 | { | |
075f6582 | 4165 | if (b->owner->enable_state != bp_disabled |
075f6582 | 4166 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4167 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4168 | && b->address == address /* address / overlay match */ |
4169 | && (!overlay_debugging || b->section == section) | |
4170 | && breakpoint_address_is_meaningful (b->owner)) | |
4171 | { | |
4172 | if (b->inserted) | |
4173 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4174 | _("another breakpoint was inserted on top of " |
4175 | "a permanent breakpoint")); | |
075f6582 DJ |
4176 | |
4177 | b->duplicate = 1; | |
4178 | } | |
c2c6d25f JM |
4179 | } |
4180 | } | |
c906108c SS |
4181 | } |
4182 | ||
0d381245 VP |
4183 | static void |
4184 | check_duplicates (struct breakpoint *bpt) | |
4185 | { | |
4186 | struct bp_location *bl = bpt->loc; | |
4187 | ||
4188 | if (! breakpoint_address_is_meaningful (bpt)) | |
4189 | return; | |
4190 | ||
4191 | for (; bl; bl = bl->next) | |
4192 | check_duplicates_for (bl->address, bl->section); | |
4193 | } | |
4194 | ||
76897487 KB |
4195 | static void |
4196 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4197 | int bnum, int have_bnum) | |
4198 | { | |
4199 | char astr1[40]; | |
4200 | char astr2[40]; | |
4201 | ||
bb599908 PH |
4202 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4203 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4204 | if (have_bnum) |
8a3fe4f8 | 4205 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4206 | bnum, astr1, astr2); |
4207 | else | |
8a3fe4f8 | 4208 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4209 | } |
4210 | ||
4211 | /* Adjust a breakpoint's address to account for architectural constraints | |
4212 | on breakpoint placement. Return the adjusted address. Note: Very | |
4213 | few targets require this kind of adjustment. For most targets, | |
4214 | this function is simply the identity function. */ | |
4215 | ||
4216 | static CORE_ADDR | |
88f7da05 | 4217 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4218 | { |
4219 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4220 | { | |
4221 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4222 | return bpaddr; | |
4223 | } | |
88f7da05 KB |
4224 | else if (bptype == bp_watchpoint |
4225 | || bptype == bp_hardware_watchpoint | |
4226 | || bptype == bp_read_watchpoint | |
4227 | || bptype == bp_access_watchpoint | |
4228 | || bptype == bp_catch_fork | |
4229 | || bptype == bp_catch_vfork | |
4230 | || bptype == bp_catch_exec) | |
4231 | { | |
4232 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4233 | have their addresses modified. */ | |
4234 | return bpaddr; | |
4235 | } | |
76897487 KB |
4236 | else |
4237 | { | |
4238 | CORE_ADDR adjusted_bpaddr; | |
4239 | ||
4240 | /* Some targets have architectural constraints on the placement | |
4241 | of breakpoint instructions. Obtain the adjusted address. */ | |
4242 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4243 | bpaddr); | |
4244 | ||
4245 | /* An adjusted breakpoint address can significantly alter | |
4246 | a user's expectations. Print a warning if an adjustment | |
4247 | is required. */ | |
4248 | if (adjusted_bpaddr != bpaddr) | |
4249 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4250 | ||
4251 | return adjusted_bpaddr; | |
4252 | } | |
4253 | } | |
4254 | ||
7cc221ef DJ |
4255 | /* Allocate a struct bp_location. */ |
4256 | ||
26bb91f3 | 4257 | static struct bp_location * |
e049a4b5 | 4258 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4259 | { |
4260 | struct bp_location *loc, *loc_p; | |
4261 | ||
4262 | loc = xmalloc (sizeof (struct bp_location)); | |
4263 | memset (loc, 0, sizeof (*loc)); | |
4264 | ||
e049a4b5 | 4265 | loc->owner = bpt; |
511a6cd4 | 4266 | loc->cond = NULL; |
0d381245 VP |
4267 | loc->shlib_disabled = 0; |
4268 | loc->enabled = 1; | |
e049a4b5 DJ |
4269 | |
4270 | switch (bp_type) | |
4271 | { | |
4272 | case bp_breakpoint: | |
4273 | case bp_until: | |
4274 | case bp_finish: | |
4275 | case bp_longjmp: | |
4276 | case bp_longjmp_resume: | |
4277 | case bp_step_resume: | |
e049a4b5 DJ |
4278 | case bp_watchpoint_scope: |
4279 | case bp_call_dummy: | |
4280 | case bp_shlib_event: | |
4281 | case bp_thread_event: | |
4282 | case bp_overlay_event: | |
4283 | case bp_catch_load: | |
4284 | case bp_catch_unload: | |
4285 | loc->loc_type = bp_loc_software_breakpoint; | |
4286 | break; | |
4287 | case bp_hardware_breakpoint: | |
4288 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4289 | break; | |
4290 | case bp_hardware_watchpoint: | |
4291 | case bp_read_watchpoint: | |
4292 | case bp_access_watchpoint: | |
4293 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4294 | break; | |
4295 | case bp_watchpoint: | |
4296 | case bp_catch_fork: | |
4297 | case bp_catch_vfork: | |
4298 | case bp_catch_exec: | |
e049a4b5 DJ |
4299 | loc->loc_type = bp_loc_other; |
4300 | break; | |
4301 | default: | |
e2e0b3e5 | 4302 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4303 | } |
4304 | ||
7cc221ef DJ |
4305 | return loc; |
4306 | } | |
4307 | ||
fe3f5fa8 VP |
4308 | static void free_bp_location (struct bp_location *loc) |
4309 | { | |
4310 | if (loc->cond) | |
4311 | xfree (loc->cond); | |
74960c60 VP |
4312 | |
4313 | if (loc->function_name) | |
4314 | xfree (loc->function_name); | |
4315 | ||
fe3f5fa8 VP |
4316 | xfree (loc); |
4317 | } | |
4318 | ||
0d381245 VP |
4319 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4320 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4321 | |
c40e75cd | 4322 | static struct breakpoint * |
0d381245 | 4323 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4324 | { |
52f0bd74 | 4325 | struct breakpoint *b, *b1; |
c906108c SS |
4326 | |
4327 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4328 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4329 | |
4d28f7a8 | 4330 | b->type = bptype; |
c906108c SS |
4331 | b->language = current_language->la_language; |
4332 | b->input_radix = input_radix; | |
4333 | b->thread = -1; | |
b5de0fa7 | 4334 | b->enable_state = bp_enabled; |
c906108c SS |
4335 | b->next = 0; |
4336 | b->silent = 0; | |
4337 | b->ignore_count = 0; | |
4338 | b->commands = NULL; | |
818dd999 | 4339 | b->frame_id = null_frame_id; |
c906108c SS |
4340 | b->dll_pathname = NULL; |
4341 | b->triggered_dll_pathname = NULL; | |
4342 | b->forked_inferior_pid = 0; | |
4343 | b->exec_pathname = NULL; | |
3086aeae | 4344 | b->ops = NULL; |
0d381245 | 4345 | b->condition_not_parsed = 0; |
c906108c SS |
4346 | |
4347 | /* Add this breakpoint to the end of the chain | |
4348 | so that a list of breakpoints will come out in order | |
4349 | of increasing numbers. */ | |
4350 | ||
4351 | b1 = breakpoint_chain; | |
4352 | if (b1 == 0) | |
4353 | breakpoint_chain = b; | |
4354 | else | |
4355 | { | |
4356 | while (b1->next) | |
4357 | b1 = b1->next; | |
4358 | b1->next = b; | |
4359 | } | |
0d381245 VP |
4360 | return b; |
4361 | } | |
4362 | ||
4363 | /* Initialize loc->function_name. */ | |
4364 | static void | |
4365 | set_breakpoint_location_function (struct bp_location *loc) | |
4366 | { | |
4367 | if (loc->owner->type == bp_breakpoint | |
4368 | || loc->owner->type == bp_hardware_breakpoint) | |
4369 | { | |
4370 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4371 | NULL, NULL); | |
4372 | if (loc->function_name) | |
4373 | loc->function_name = xstrdup (loc->function_name); | |
4374 | } | |
4375 | } | |
4376 | ||
4377 | /* set_raw_breakpoint is a low level routine for allocating and | |
4378 | partially initializing a breakpoint of type BPTYPE. The newly | |
4379 | created breakpoint's address, section, source file name, and line | |
4380 | number are provided by SAL. The newly created and partially | |
4381 | initialized breakpoint is added to the breakpoint chain and | |
4382 | is also returned as the value of this function. | |
4383 | ||
4384 | It is expected that the caller will complete the initialization of | |
4385 | the newly created breakpoint struct as well as output any status | |
4386 | information regarding the creation of a new breakpoint. In | |
4387 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4388 | number! Care should be taken to not allow an error to occur | |
4389 | prior to completing the initialization of the breakpoint. If this | |
4390 | should happen, a bogus breakpoint will be left on the chain. */ | |
4391 | ||
4392 | struct breakpoint * | |
4393 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4394 | { | |
4395 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4396 | CORE_ADDR adjusted_address; | |
4397 | ||
4398 | /* Adjust the breakpoint's address prior to allocating a location. | |
4399 | Once we call allocate_bp_location(), that mostly uninitialized | |
4400 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4401 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4402 | not want its scan of the location chain to find a breakpoint and |
4403 | location that's only been partially initialized. */ | |
4404 | adjusted_address = adjust_breakpoint_address (sal.pc, bptype); | |
4405 | ||
4406 | b->loc = allocate_bp_location (b, bptype); | |
4407 | b->loc->requested_address = sal.pc; | |
4408 | b->loc->address = adjusted_address; | |
4409 | ||
4410 | if (sal.symtab == NULL) | |
4411 | b->source_file = NULL; | |
4412 | else | |
4413 | b->source_file = savestring (sal.symtab->filename, | |
4414 | strlen (sal.symtab->filename)); | |
4415 | b->loc->section = sal.section; | |
4416 | b->line_number = sal.line; | |
4417 | ||
4418 | set_breakpoint_location_function (b->loc); | |
c906108c | 4419 | |
c906108c SS |
4420 | breakpoints_changed (); |
4421 | ||
4422 | return b; | |
4423 | } | |
4424 | ||
c2c6d25f JM |
4425 | |
4426 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4427 | instruction, hard-wired into the inferior's code. */ | |
4428 | void | |
4429 | make_breakpoint_permanent (struct breakpoint *b) | |
4430 | { | |
0d381245 | 4431 | struct bp_location *bl; |
b5de0fa7 | 4432 | b->enable_state = bp_permanent; |
c2c6d25f | 4433 | |
0d381245 VP |
4434 | /* By definition, permanent breakpoints are already present in the code. |
4435 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4436 | is called in just one place, so it's hard to say if it's reasonable | |
4437 | to have permanent breakpoint with multiple locations or not, | |
4438 | but it's easy to implmement. */ | |
4439 | for (bl = b->loc; bl; bl = bl->next) | |
4440 | bl->inserted = 1; | |
c2c6d25f JM |
4441 | } |
4442 | ||
1900040c MS |
4443 | static struct breakpoint * |
4444 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4445 | { | |
4446 | static int internal_breakpoint_number = -1; | |
4447 | struct symtab_and_line sal; | |
4448 | struct breakpoint *b; | |
4449 | ||
fe39c653 | 4450 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4451 | |
4452 | sal.pc = address; | |
4453 | sal.section = find_pc_overlay (sal.pc); | |
4454 | ||
4455 | b = set_raw_breakpoint (sal, type); | |
4456 | b->number = internal_breakpoint_number--; | |
4457 | b->disposition = disp_donttouch; | |
4458 | ||
4459 | return b; | |
4460 | } | |
4461 | ||
c906108c SS |
4462 | |
4463 | static void | |
fba45db2 | 4464 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4465 | { |
c906108c | 4466 | struct breakpoint *b; |
1900040c | 4467 | struct minimal_symbol *m; |
c906108c | 4468 | |
1900040c MS |
4469 | if (func_name == NULL) |
4470 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4471 | else | |
c906108c | 4472 | { |
5520a790 | 4473 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4474 | return; |
1900040c MS |
4475 | |
4476 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4477 | } |
c906108c | 4478 | |
b5de0fa7 | 4479 | b->enable_state = bp_disabled; |
c906108c SS |
4480 | b->silent = 1; |
4481 | if (func_name) | |
4fcf66da | 4482 | b->addr_string = xstrdup (func_name); |
74960c60 | 4483 | update_global_location_list (); |
c906108c SS |
4484 | } |
4485 | ||
53a5351d JM |
4486 | /* Call this routine when stepping and nexting to enable a breakpoint |
4487 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4488 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4489 | ||
4490 | void | |
fba45db2 | 4491 | enable_longjmp_breakpoint (void) |
c906108c | 4492 | { |
52f0bd74 | 4493 | struct breakpoint *b; |
c906108c SS |
4494 | |
4495 | ALL_BREAKPOINTS (b) | |
4496 | if (b->type == bp_longjmp) | |
c5aa993b | 4497 | { |
b5de0fa7 | 4498 | b->enable_state = bp_enabled; |
74960c60 | 4499 | update_global_location_list (); |
c5aa993b | 4500 | } |
c906108c SS |
4501 | } |
4502 | ||
4503 | void | |
fba45db2 | 4504 | disable_longjmp_breakpoint (void) |
c906108c | 4505 | { |
52f0bd74 | 4506 | struct breakpoint *b; |
c906108c SS |
4507 | |
4508 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4509 | if (b->type == bp_longjmp |
c906108c | 4510 | || b->type == bp_longjmp_resume) |
c5aa993b | 4511 | { |
b5de0fa7 | 4512 | b->enable_state = bp_disabled; |
74960c60 | 4513 | update_global_location_list (); |
c5aa993b | 4514 | } |
c906108c SS |
4515 | } |
4516 | ||
1900040c MS |
4517 | static void |
4518 | create_overlay_event_breakpoint (char *func_name) | |
4519 | { | |
4520 | struct breakpoint *b; | |
4521 | struct minimal_symbol *m; | |
4522 | ||
5520a790 | 4523 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4524 | return; |
4525 | ||
4526 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4527 | bp_overlay_event); | |
4528 | b->addr_string = xstrdup (func_name); | |
4529 | ||
4530 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4531 | { |
4532 | b->enable_state = bp_enabled; | |
4533 | overlay_events_enabled = 1; | |
4534 | } | |
1900040c | 4535 | else |
c02f5703 MS |
4536 | { |
4537 | b->enable_state = bp_disabled; | |
4538 | overlay_events_enabled = 0; | |
4539 | } | |
74960c60 | 4540 | update_global_location_list (); |
1900040c MS |
4541 | } |
4542 | ||
4543 | void | |
4544 | enable_overlay_breakpoints (void) | |
4545 | { | |
52f0bd74 | 4546 | struct breakpoint *b; |
1900040c MS |
4547 | |
4548 | ALL_BREAKPOINTS (b) | |
4549 | if (b->type == bp_overlay_event) | |
4550 | { | |
4551 | b->enable_state = bp_enabled; | |
74960c60 | 4552 | update_global_location_list (); |
c02f5703 | 4553 | overlay_events_enabled = 1; |
1900040c MS |
4554 | } |
4555 | } | |
4556 | ||
4557 | void | |
4558 | disable_overlay_breakpoints (void) | |
4559 | { | |
52f0bd74 | 4560 | struct breakpoint *b; |
1900040c MS |
4561 | |
4562 | ALL_BREAKPOINTS (b) | |
4563 | if (b->type == bp_overlay_event) | |
4564 | { | |
4565 | b->enable_state = bp_disabled; | |
74960c60 | 4566 | update_global_location_list (); |
c02f5703 | 4567 | overlay_events_enabled = 0; |
1900040c MS |
4568 | } |
4569 | } | |
4570 | ||
c4093a6a | 4571 | struct breakpoint * |
fba45db2 | 4572 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4573 | { |
4574 | struct breakpoint *b; | |
c4093a6a | 4575 | |
1900040c | 4576 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4577 | |
b5de0fa7 | 4578 | b->enable_state = bp_enabled; |
c4093a6a | 4579 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4580 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4581 | |
74960c60 VP |
4582 | update_global_location_list_nothrow (); |
4583 | ||
c4093a6a JM |
4584 | return b; |
4585 | } | |
4586 | ||
4587 | void | |
4588 | remove_thread_event_breakpoints (void) | |
4589 | { | |
4590 | struct breakpoint *b, *temp; | |
4591 | ||
4592 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4593 | if (b->type == bp_thread_event) | |
4594 | delete_breakpoint (b); | |
4595 | } | |
4596 | ||
0101ce28 JJ |
4597 | struct captured_parse_breakpoint_args |
4598 | { | |
4599 | char **arg_p; | |
4600 | struct symtabs_and_lines *sals_p; | |
4601 | char ***addr_string_p; | |
4602 | int *not_found_ptr; | |
4603 | }; | |
4604 | ||
4605 | struct lang_and_radix | |
4606 | { | |
4607 | enum language lang; | |
4608 | int radix; | |
4609 | }; | |
4610 | ||
0101ce28 | 4611 | |
cae688ec JJ |
4612 | void |
4613 | remove_solib_event_breakpoints (void) | |
4614 | { | |
4615 | struct breakpoint *b, *temp; | |
4616 | ||
4617 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4618 | if (b->type == bp_shlib_event) | |
4619 | delete_breakpoint (b); | |
4620 | } | |
4621 | ||
4622 | struct breakpoint * | |
4623 | create_solib_event_breakpoint (CORE_ADDR address) | |
4624 | { | |
4625 | struct breakpoint *b; | |
4626 | ||
4627 | b = create_internal_breakpoint (address, bp_shlib_event); | |
74960c60 | 4628 | update_global_location_list_nothrow (); |
cae688ec JJ |
4629 | return b; |
4630 | } | |
4631 | ||
4632 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4633 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4634 | ||
4635 | void | |
cb851954 | 4636 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4637 | { |
0d381245 | 4638 | struct bp_location *loc; |
cae688ec JJ |
4639 | int disabled_shlib_breaks = 0; |
4640 | ||
0d381245 | 4641 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4642 | { |
0d381245 VP |
4643 | struct breakpoint *b = loc->owner; |
4644 | /* We apply the check to all breakpoints, including disabled | |
4645 | for those with loc->duplicate set. This is so that when breakpoint | |
4646 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4647 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4648 | to insert those breakpoints and fail. */ | |
a77053c2 | 4649 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
0d381245 | 4650 | && !loc->shlib_disabled |
a77053c2 | 4651 | #ifdef PC_SOLIB |
0d381245 | 4652 | && PC_SOLIB (loc->address) |
a77053c2 | 4653 | #else |
0d381245 | 4654 | && solib_address (loc->address) |
a77053c2 MK |
4655 | #endif |
4656 | ) | |
0d381245 VP |
4657 | { |
4658 | loc->shlib_disabled = 1; | |
4659 | } | |
cae688ec JJ |
4660 | } |
4661 | } | |
4662 | ||
84acb35a JJ |
4663 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4664 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4665 | ||
75149521 | 4666 | static void |
84acb35a JJ |
4667 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4668 | { | |
0d381245 | 4669 | struct bp_location *loc; |
84acb35a JJ |
4670 | int disabled_shlib_breaks = 0; |
4671 | ||
0d381245 | 4672 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4673 | { |
0d381245 VP |
4674 | struct breakpoint *b = loc->owner; |
4675 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4676 | || loc->loc_type == bp_loc_software_breakpoint) | |
4677 | && !loc->shlib_disabled) | |
84acb35a | 4678 | { |
a77053c2 | 4679 | #ifdef PC_SOLIB |
0d381245 | 4680 | char *so_name = PC_SOLIB (loc->address); |
a77053c2 | 4681 | #else |
0d381245 | 4682 | char *so_name = solib_address (loc->address); |
a77053c2 MK |
4683 | #endif |
4684 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a | 4685 | { |
0d381245 | 4686 | loc->shlib_disabled = 1; |
84acb35a JJ |
4687 | /* At this point, we cannot rely on remove_breakpoint |
4688 | succeeding so we must mark the breakpoint as not inserted | |
4689 | to prevent future errors occurring in remove_breakpoints. */ | |
0d381245 | 4690 | loc->inserted = 0; |
84acb35a JJ |
4691 | if (!disabled_shlib_breaks) |
4692 | { | |
4693 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4694 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4695 | so_name); |
4696 | } | |
4697 | disabled_shlib_breaks = 1; | |
4698 | } | |
4699 | } | |
4700 | } | |
84acb35a JJ |
4701 | } |
4702 | ||
c906108c | 4703 | static void |
fba45db2 KB |
4704 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4705 | enum bptype bp_kind) | |
c906108c | 4706 | { |
c5aa993b JM |
4707 | struct symtab_and_line sal; |
4708 | struct breakpoint *b; | |
4709 | int thread = -1; /* All threads. */ | |
4710 | ||
fe39c653 | 4711 | init_sal (&sal); |
c906108c SS |
4712 | sal.pc = 0; |
4713 | sal.symtab = NULL; | |
4714 | sal.line = 0; | |
c5aa993b | 4715 | |
4d28f7a8 | 4716 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4717 | set_breakpoint_count (breakpoint_count + 1); |
4718 | b->number = breakpoint_count; | |
53a5351d JM |
4719 | b->cond_string = (cond_string == NULL) ? |
4720 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4721 | b->thread = thread; |
4722 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4723 | b->enable_state = bp_enabled; |
4724 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4725 | b->forked_inferior_pid = 0; |
74960c60 VP |
4726 | update_global_location_list (); |
4727 | ||
c5aa993b | 4728 | |
c906108c SS |
4729 | mention (b); |
4730 | } | |
4731 | ||
9b70b993 | 4732 | static void |
fba45db2 | 4733 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4734 | { |
4735 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4736 | } | |
c5aa993b | 4737 | |
9b70b993 | 4738 | static void |
fba45db2 | 4739 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4740 | { |
4741 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4742 | } | |
4743 | ||
9b70b993 | 4744 | static void |
fba45db2 | 4745 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4746 | { |
c5aa993b JM |
4747 | struct symtab_and_line sal; |
4748 | struct breakpoint *b; | |
4749 | int thread = -1; /* All threads. */ | |
c906108c | 4750 | |
fe39c653 | 4751 | init_sal (&sal); |
c906108c SS |
4752 | sal.pc = 0; |
4753 | sal.symtab = NULL; | |
4754 | sal.line = 0; | |
4755 | ||
4d28f7a8 | 4756 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4757 | set_breakpoint_count (breakpoint_count + 1); |
4758 | b->number = breakpoint_count; | |
53a5351d JM |
4759 | b->cond_string = (cond_string == NULL) ? |
4760 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4761 | b->thread = thread; |
4762 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4763 | b->enable_state = bp_enabled; |
4764 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
74960c60 | 4765 | update_global_location_list (); |
c906108c | 4766 | |
c906108c SS |
4767 | mention (b); |
4768 | } | |
4769 | ||
4770 | static int | |
fba45db2 | 4771 | hw_breakpoint_used_count (void) |
c906108c | 4772 | { |
52f0bd74 | 4773 | struct breakpoint *b; |
c906108c SS |
4774 | int i = 0; |
4775 | ||
4776 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4777 | { |
b5de0fa7 | 4778 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4779 | i++; |
4780 | } | |
c906108c SS |
4781 | |
4782 | return i; | |
4783 | } | |
4784 | ||
4785 | static int | |
fba45db2 | 4786 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4787 | { |
52f0bd74 | 4788 | struct breakpoint *b; |
c906108c SS |
4789 | int i = 0; |
4790 | ||
4791 | *other_type_used = 0; | |
4792 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4793 | { |
468d015d | 4794 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4795 | { |
4796 | if (b->type == type) | |
4797 | i++; | |
4798 | else if ((b->type == bp_hardware_watchpoint || | |
4799 | b->type == bp_read_watchpoint || | |
468d015d | 4800 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4801 | *other_type_used = 1; |
4802 | } | |
4803 | } | |
c906108c SS |
4804 | return i; |
4805 | } | |
4806 | ||
53a5351d JM |
4807 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4808 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4809 | |
53a5351d JM |
4810 | FIXME - This ought to be done by setting a temporary breakpoint |
4811 | that gets deleted automatically... */ | |
c906108c SS |
4812 | |
4813 | void | |
818dd999 | 4814 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4815 | { |
52f0bd74 | 4816 | struct breakpoint *b; |
c906108c SS |
4817 | |
4818 | ALL_BREAKPOINTS (b) | |
4819 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4820 | { |
5cab636d | 4821 | b->loc->requested_address = pc; |
88f7da05 KB |
4822 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4823 | b->type); | |
b5de0fa7 | 4824 | b->enable_state = bp_enabled; |
818dd999 | 4825 | b->frame_id = frame_id; |
74960c60 | 4826 | update_global_location_list (); |
c5aa993b JM |
4827 | return; |
4828 | } | |
c906108c SS |
4829 | } |
4830 | ||
4831 | void | |
fba45db2 | 4832 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4833 | { |
c5aa993b | 4834 | struct breakpoint *b; |
c906108c SS |
4835 | |
4836 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4837 | { |
4838 | if (((b->type == bp_watchpoint) | |
4839 | || (b->type == bp_hardware_watchpoint) | |
4840 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4841 | || (b->type == bp_access_watchpoint)) |
468d015d | 4842 | && breakpoint_enabled (b)) |
c5aa993b | 4843 | { |
b5de0fa7 | 4844 | b->enable_state = bp_call_disabled; |
74960c60 | 4845 | update_global_location_list (); |
c5aa993b JM |
4846 | } |
4847 | } | |
c906108c SS |
4848 | } |
4849 | ||
4850 | void | |
fba45db2 | 4851 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4852 | { |
c5aa993b | 4853 | struct breakpoint *b; |
c906108c SS |
4854 | |
4855 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4856 | { |
4857 | if (((b->type == bp_watchpoint) | |
4858 | || (b->type == bp_hardware_watchpoint) | |
4859 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4860 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4861 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4862 | { |
b5de0fa7 | 4863 | b->enable_state = bp_enabled; |
74960c60 | 4864 | update_global_location_list (); |
c5aa993b JM |
4865 | } |
4866 | } | |
c906108c SS |
4867 | } |
4868 | ||
4869 | ||
4870 | /* Set a breakpoint that will evaporate an end of command | |
4871 | at address specified by SAL. | |
4872 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4873 | ||
4874 | struct breakpoint * | |
818dd999 | 4875 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4876 | enum bptype type) |
c906108c | 4877 | { |
52f0bd74 | 4878 | struct breakpoint *b; |
4d28f7a8 | 4879 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4880 | b->enable_state = bp_enabled; |
4881 | b->disposition = disp_donttouch; | |
818dd999 | 4882 | b->frame_id = frame_id; |
c906108c SS |
4883 | |
4884 | /* If we're debugging a multi-threaded program, then we | |
4885 | want momentary breakpoints to be active in only a | |
4886 | single thread of control. */ | |
39f77062 KB |
4887 | if (in_thread_list (inferior_ptid)) |
4888 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 4889 | |
74960c60 VP |
4890 | update_global_location_list_nothrow (); |
4891 | ||
c906108c SS |
4892 | return b; |
4893 | } | |
c906108c | 4894 | \f |
c5aa993b | 4895 | |
c906108c SS |
4896 | /* Tell the user we have just set a breakpoint B. */ |
4897 | ||
4898 | static void | |
fba45db2 | 4899 | mention (struct breakpoint *b) |
c906108c SS |
4900 | { |
4901 | int say_where = 0; | |
3b31d625 | 4902 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4903 | struct ui_stream *stb; |
4904 | ||
4905 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4906 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4907 | |
9a4105ab AC |
4908 | /* FIXME: This is misplaced; mention() is called by things (like |
4909 | hitting a watchpoint) other than breakpoint creation. It should | |
4910 | be possible to clean this up and at the same time replace the | |
4911 | random calls to breakpoint_changed with this hook, as has already | |
4912 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4913 | if (deprecated_create_breakpoint_hook) | |
4914 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4915 | breakpoint_create_event (b->number); |
c906108c | 4916 | |
3086aeae DJ |
4917 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4918 | b->ops->print_mention (b); | |
4919 | else | |
4920 | switch (b->type) | |
4921 | { | |
4922 | case bp_none: | |
a3f17187 | 4923 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4924 | break; |
4925 | case bp_watchpoint: | |
4926 | ui_out_text (uiout, "Watchpoint "); | |
4927 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4928 | ui_out_field_int (uiout, "number", b->number); | |
4929 | ui_out_text (uiout, ": "); | |
4930 | print_expression (b->exp, stb->stream); | |
4931 | ui_out_field_stream (uiout, "exp", stb); | |
4932 | do_cleanups (ui_out_chain); | |
4933 | break; | |
4934 | case bp_hardware_watchpoint: | |
4935 | ui_out_text (uiout, "Hardware watchpoint "); | |
4936 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4937 | ui_out_field_int (uiout, "number", b->number); | |
4938 | ui_out_text (uiout, ": "); | |
4939 | print_expression (b->exp, stb->stream); | |
4940 | ui_out_field_stream (uiout, "exp", stb); | |
4941 | do_cleanups (ui_out_chain); | |
4942 | break; | |
4943 | case bp_read_watchpoint: | |
4944 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4945 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4946 | ui_out_field_int (uiout, "number", b->number); | |
4947 | ui_out_text (uiout, ": "); | |
4948 | print_expression (b->exp, stb->stream); | |
4949 | ui_out_field_stream (uiout, "exp", stb); | |
4950 | do_cleanups (ui_out_chain); | |
4951 | break; | |
4952 | case bp_access_watchpoint: | |
4953 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4954 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4955 | ui_out_field_int (uiout, "number", b->number); | |
4956 | ui_out_text (uiout, ": "); | |
4957 | print_expression (b->exp, stb->stream); | |
4958 | ui_out_field_stream (uiout, "exp", stb); | |
4959 | do_cleanups (ui_out_chain); | |
4960 | break; | |
4961 | case bp_breakpoint: | |
4962 | if (ui_out_is_mi_like_p (uiout)) | |
4963 | { | |
4964 | say_where = 0; | |
4965 | break; | |
4966 | } | |
2cec12e5 AR |
4967 | if (b->disposition == disp_del) |
4968 | printf_filtered (_("Temporary breakpoint")); | |
4969 | else | |
4970 | printf_filtered (_("Breakpoint")); | |
4971 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
4972 | say_where = 1; |
4973 | break; | |
4974 | case bp_hardware_breakpoint: | |
4975 | if (ui_out_is_mi_like_p (uiout)) | |
4976 | { | |
4977 | say_where = 0; | |
4978 | break; | |
4979 | } | |
a3f17187 | 4980 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
4981 | say_where = 1; |
4982 | break; | |
4983 | case bp_catch_load: | |
4984 | case bp_catch_unload: | |
a3f17187 | 4985 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
4986 | b->number, |
4987 | (b->type == bp_catch_load) ? "load" : "unload", | |
4988 | (b->dll_pathname != NULL) ? | |
4989 | b->dll_pathname : "<any library>"); | |
4990 | break; | |
4991 | case bp_catch_fork: | |
4992 | case bp_catch_vfork: | |
a3f17187 | 4993 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4994 | b->number, |
4995 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4996 | break; | |
4997 | case bp_catch_exec: | |
a3f17187 | 4998 | printf_filtered (_("Catchpoint %d (exec)"), |
3086aeae DJ |
4999 | b->number); |
5000 | break; | |
3086aeae DJ |
5001 | |
5002 | case bp_until: | |
5003 | case bp_finish: | |
5004 | case bp_longjmp: | |
5005 | case bp_longjmp_resume: | |
5006 | case bp_step_resume: | |
3086aeae DJ |
5007 | case bp_call_dummy: |
5008 | case bp_watchpoint_scope: | |
5009 | case bp_shlib_event: | |
5010 | case bp_thread_event: | |
5011 | case bp_overlay_event: | |
5012 | break; | |
5013 | } | |
c906108c | 5014 | |
c906108c SS |
5015 | if (say_where) |
5016 | { | |
a3f17187 AC |
5017 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5018 | single string. */ | |
0d381245 | 5019 | if (b->loc == NULL) |
c906108c | 5020 | { |
a3f17187 | 5021 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5022 | } |
5023 | else | |
5024 | { | |
5025 | if (addressprint || b->source_file == NULL) | |
5026 | { | |
5027 | printf_filtered (" at "); | |
ed49a04f | 5028 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
5029 | } |
5030 | if (b->source_file) | |
5031 | printf_filtered (": file %s, line %d.", | |
5032 | b->source_file, b->line_number); | |
0d381245 VP |
5033 | |
5034 | if (b->loc->next) | |
5035 | { | |
5036 | struct bp_location *loc = b->loc; | |
5037 | int n = 0; | |
5038 | for (; loc; loc = loc->next) | |
5039 | ++n; | |
5040 | printf_filtered (" (%d locations)", n); | |
5041 | } | |
5042 | ||
c906108c | 5043 | } |
c906108c | 5044 | } |
8b93c638 | 5045 | do_cleanups (old_chain); |
9dc5e2a9 | 5046 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5047 | return; |
c906108c SS |
5048 | printf_filtered ("\n"); |
5049 | } | |
c906108c | 5050 | \f |
c5aa993b | 5051 | |
0d381245 VP |
5052 | static struct bp_location * |
5053 | add_location_to_breakpoint (struct breakpoint *b, enum bptype bptype, | |
5054 | const struct symtab_and_line *sal) | |
5055 | { | |
5056 | struct bp_location *loc, **tmp; | |
5057 | ||
5058 | loc = allocate_bp_location (b, bptype); | |
5059 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
5060 | ; | |
5061 | *tmp = loc; | |
5062 | loc->requested_address = sal->pc; | |
5063 | loc->address = adjust_breakpoint_address (loc->requested_address, | |
5064 | bptype); | |
5065 | loc->section = sal->section; | |
5066 | ||
5067 | set_breakpoint_location_function (loc); | |
5068 | return loc; | |
5069 | } | |
c3f6f71d | 5070 | |
018d34a4 VP |
5071 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5072 | as textual description of the location, and COND_STRING | |
db107f19 | 5073 | as condition expression. */ |
018d34a4 VP |
5074 | |
5075 | static void | |
0d381245 | 5076 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5077 | char *cond_string, |
5078 | enum bptype type, enum bpdisp disposition, | |
db107f19 | 5079 | int thread, int ignore_count, int from_tty) |
018d34a4 | 5080 | { |
0d381245 VP |
5081 | struct breakpoint *b = NULL; |
5082 | int i; | |
018d34a4 VP |
5083 | |
5084 | if (type == bp_hardware_breakpoint) | |
5085 | { | |
5086 | int i = hw_breakpoint_used_count (); | |
5087 | int target_resources_ok = | |
5088 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5089 | i + 1, 0); | |
5090 | if (target_resources_ok == 0) | |
5091 | error (_("No hardware breakpoint support in the target.")); | |
5092 | else if (target_resources_ok < 0) | |
5093 | error (_("Hardware breakpoints used exceeds limit.")); | |
5094 | } | |
5095 | ||
0d381245 VP |
5096 | for (i = 0; i < sals.nelts; ++i) |
5097 | { | |
5098 | struct symtab_and_line sal = sals.sals[i]; | |
5099 | struct bp_location *loc; | |
5100 | ||
5101 | if (from_tty) | |
5102 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5103 | ||
5104 | if (i == 0) | |
5105 | { | |
5106 | b = set_raw_breakpoint (sal, type); | |
5107 | set_breakpoint_count (breakpoint_count + 1); | |
5108 | b->number = breakpoint_count; | |
5109 | b->thread = thread; | |
018d34a4 | 5110 | |
0d381245 VP |
5111 | b->cond_string = cond_string; |
5112 | b->ignore_count = ignore_count; | |
5113 | b->enable_state = bp_enabled; | |
5114 | b->disposition = disposition; | |
018d34a4 | 5115 | |
0d381245 VP |
5116 | loc = b->loc; |
5117 | } | |
5118 | else | |
018d34a4 | 5119 | { |
0d381245 VP |
5120 | loc = add_location_to_breakpoint (b, type, &sal); |
5121 | } | |
5122 | ||
5123 | if (b->cond_string) | |
5124 | { | |
5125 | char *arg = b->cond_string; | |
d32a6982 | 5126 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5127 | if (*arg) |
db107f19 | 5128 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5129 | } |
0d381245 | 5130 | } |
018d34a4 VP |
5131 | |
5132 | if (addr_string) | |
5133 | b->addr_string = addr_string; | |
5134 | else | |
5135 | /* addr_string has to be used or breakpoint_re_set will delete | |
5136 | me. */ | |
5137 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5138 | ||
5139 | mention (b); | |
5140 | } | |
5141 | ||
ed0616c6 VP |
5142 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5143 | elements to fill the void space. */ | |
5144 | static void remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
5145 | { | |
5146 | int i = index_to_remove+1; | |
5147 | int last_index = sal->nelts-1; | |
5148 | ||
5149 | for (;i <= last_index; ++i) | |
5150 | sal->sals[i-1] = sal->sals[i]; | |
5151 | ||
5152 | --(sal->nelts); | |
5153 | } | |
5154 | ||
5155 | /* If appropriate, obtains all sals that correspond | |
5156 | to the same file and line as SAL. This is done | |
5157 | only if SAL does not have explicit PC and has | |
5158 | line and file information. If we got just a single | |
5159 | expanded sal, return the original. | |
5160 | ||
5161 | Otherwise, if SAL.explicit_line is not set, filter out | |
5162 | all sals for which the name of enclosing function | |
5163 | is different from SAL. This makes sure that if we have | |
5164 | breakpoint originally set in template instantiation, say | |
5165 | foo<int>(), we won't expand SAL to locations at the same | |
5166 | line in all existing instantiations of 'foo'. | |
5167 | ||
5168 | */ | |
5169 | struct symtabs_and_lines | |
5170 | expand_line_sal_maybe (struct symtab_and_line sal) | |
5171 | { | |
5172 | struct symtabs_and_lines expanded; | |
5173 | CORE_ADDR original_pc = sal.pc; | |
5174 | char *original_function = NULL; | |
5175 | int found; | |
5176 | int i; | |
5177 | ||
5178 | /* If we have explicit pc, don't expand. | |
5179 | If we have no line number, we can't expand. */ | |
5180 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5181 | { | |
5182 | expanded.nelts = 1; | |
5183 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5184 | expanded.sals[0] = sal; | |
5185 | return expanded; | |
5186 | } | |
5187 | ||
5188 | sal.pc = 0; | |
5189 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5190 | ||
5191 | expanded = expand_line_sal (sal); | |
5192 | if (expanded.nelts == 1) | |
5193 | { | |
5194 | /* We had one sal, we got one sal. Without futher | |
5195 | processing, just return the original sal. */ | |
5196 | xfree (expanded.sals); | |
5197 | expanded.nelts = 1; | |
5198 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5199 | sal.pc = original_pc; | |
5200 | expanded.sals[0] = sal; | |
5201 | return expanded; | |
5202 | } | |
5203 | ||
5204 | if (!sal.explicit_line) | |
5205 | { | |
5206 | CORE_ADDR func_addr, func_end; | |
5207 | for (i = 0; i < expanded.nelts; ++i) | |
5208 | { | |
5209 | CORE_ADDR pc = expanded.sals[i].pc; | |
5210 | char *this_function; | |
5211 | if (find_pc_partial_function (pc, &this_function, | |
5212 | &func_addr, &func_end)) | |
5213 | { | |
5214 | if (this_function && | |
5215 | strcmp (this_function, original_function) != 0) | |
5216 | { | |
5217 | remove_sal (&expanded, i); | |
5218 | --i; | |
5219 | } | |
5220 | else if (func_addr == pc) | |
5221 | { | |
5222 | /* We're at beginning of a function, and should | |
5223 | skip prologue. */ | |
5224 | struct symbol *sym = find_pc_function (pc); | |
5225 | if (sym) | |
5226 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5227 | else | |
5228 | expanded.sals[i].pc | |
5229 | = gdbarch_skip_prologue (current_gdbarch, pc); | |
5230 | } | |
5231 | } | |
5232 | } | |
5233 | } | |
5234 | ||
5235 | ||
5236 | if (expanded.nelts <= 1) | |
5237 | { | |
5238 | /* This is un ugly workaround. If we get zero | |
5239 | expanded sals then something is really wrong. | |
5240 | Fix that by returnign the original sal. */ | |
5241 | xfree (expanded.sals); | |
5242 | expanded.nelts = 1; | |
5243 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5244 | sal.pc = original_pc; | |
5245 | expanded.sals[0] = sal; | |
5246 | return expanded; | |
5247 | } | |
5248 | ||
5249 | if (original_pc) | |
5250 | { | |
5251 | found = 0; | |
5252 | for (i = 0; i < expanded.nelts; ++i) | |
5253 | if (expanded.sals[i].pc == original_pc) | |
5254 | { | |
5255 | found = 1; | |
5256 | break; | |
5257 | } | |
5258 | gdb_assert (found); | |
5259 | } | |
5260 | ||
5261 | return expanded; | |
5262 | } | |
5263 | ||
018d34a4 VP |
5264 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5265 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5266 | value. COND_STRING, if not NULL, specified the condition to be | |
5267 | used for all breakpoints. Essentially the only case where | |
5268 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5269 | function. In that case, it's still not possible to specify | |
5270 | separate conditions for different overloaded functions, so | |
5271 | we take just a single condition string. | |
5272 | ||
c3f6f71d | 5273 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5274 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5275 | array contents). If the function fails (error() is called), the |
5276 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5277 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5278 | |
5279 | static void | |
c3f6f71d | 5280 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5281 | char *cond_string, |
c3f6f71d | 5282 | enum bptype type, enum bpdisp disposition, |
db107f19 | 5283 | int thread, int ignore_count, int from_tty) |
c906108c | 5284 | { |
018d34a4 VP |
5285 | int i; |
5286 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5287 | { |
ed0616c6 VP |
5288 | struct symtabs_and_lines expanded = |
5289 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5290 | |
ed0616c6 | 5291 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5292 | cond_string, type, disposition, |
db107f19 | 5293 | thread, ignore_count, from_tty); |
c3f6f71d | 5294 | } |
74960c60 VP |
5295 | |
5296 | update_global_location_list (); | |
c3f6f71d | 5297 | } |
c906108c | 5298 | |
c3f6f71d JM |
5299 | /* Parse ARG which is assumed to be a SAL specification possibly |
5300 | followed by conditionals. On return, SALS contains an array of SAL | |
5301 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5302 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5303 | |
b9362cc7 | 5304 | static void |
c3f6f71d JM |
5305 | parse_breakpoint_sals (char **address, |
5306 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5307 | char ***addr_string, |
5308 | int *not_found_ptr) | |
c3f6f71d JM |
5309 | { |
5310 | char *addr_start = *address; | |
5311 | *addr_string = NULL; | |
5312 | /* If no arg given, or if first arg is 'if ', use the default | |
5313 | breakpoint. */ | |
5314 | if ((*address) == NULL | |
5315 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5316 | { |
5317 | if (default_breakpoint_valid) | |
5318 | { | |
c3f6f71d | 5319 | struct symtab_and_line sal; |
fe39c653 | 5320 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5321 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5322 | xmalloc (sizeof (struct symtab_and_line)); |
5323 | sal.pc = default_breakpoint_address; | |
5324 | sal.line = default_breakpoint_line; | |
5325 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5326 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5327 | sals->sals[0] = sal; |
5328 | sals->nelts = 1; | |
c906108c SS |
5329 | } |
5330 | else | |
8a3fe4f8 | 5331 | error (_("No default breakpoint address now.")); |
c906108c SS |
5332 | } |
5333 | else | |
5334 | { | |
c906108c | 5335 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5336 | current_source_symtab (which is decode_line_1's default). This |
5337 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5338 | leaving default_breakpoint_* alone. |
5339 | ObjC: However, don't match an Objective-C method name which | |
5340 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5341 | |
c214a6fd | 5342 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5343 | |
c906108c | 5344 | if (default_breakpoint_valid |
0378c332 | 5345 | && (!cursal.symtab |
1aeae86e AF |
5346 | || ((strchr ("+-", (*address)[0]) != NULL) |
5347 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5348 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5349 | default_breakpoint_line, addr_string, |
5350 | not_found_ptr); | |
c906108c | 5351 | else |
0101ce28 JJ |
5352 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5353 | addr_string, not_found_ptr); | |
c906108c | 5354 | } |
c3f6f71d JM |
5355 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5356 | if (sals->nelts > 0 && *addr_string == NULL) | |
5357 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5358 | if (addr_start != (*address)) | |
c906108c | 5359 | { |
c3f6f71d JM |
5360 | int i; |
5361 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5362 | { |
c3f6f71d JM |
5363 | /* Add the string if not present. */ |
5364 | if ((*addr_string)[i] == NULL) | |
5365 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5366 | } |
5367 | } | |
c3f6f71d | 5368 | } |
c906108c | 5369 | |
c906108c | 5370 | |
c3f6f71d JM |
5371 | /* Convert each SAL into a real PC. Verify that the PC can be |
5372 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5373 | |
b9362cc7 | 5374 | static void |
c3f6f71d JM |
5375 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5376 | char *address) | |
5377 | { | |
5378 | int i; | |
5379 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5380 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5381 | } |
5382 | ||
05ff989b | 5383 | static void |
0101ce28 JJ |
5384 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5385 | { | |
5386 | struct captured_parse_breakpoint_args *args = data; | |
5387 | ||
5388 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5389 | args->not_found_ptr); | |
0101ce28 JJ |
5390 | } |
5391 | ||
018d34a4 VP |
5392 | /* Given TOK, a string specification of condition and thread, as |
5393 | accepted by the 'break' command, extract the condition | |
5394 | string and thread number and set *COND_STRING and *THREAD. | |
5395 | PC identifies the context at which the condition should be parsed. | |
5396 | If no condition is found, *COND_STRING is set to NULL. | |
5397 | If no thread is found, *THREAD is set to -1. */ | |
5398 | static void | |
5399 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
5400 | char **cond_string, int *thread) | |
5401 | { | |
5402 | *cond_string = NULL; | |
5403 | *thread = -1; | |
5404 | while (tok && *tok) | |
5405 | { | |
5406 | char *end_tok; | |
5407 | int toklen; | |
5408 | char *cond_start = NULL; | |
5409 | char *cond_end = NULL; | |
5410 | while (*tok == ' ' || *tok == '\t') | |
5411 | tok++; | |
5412 | ||
5413 | end_tok = tok; | |
5414 | ||
5415 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5416 | end_tok++; | |
5417 | ||
5418 | toklen = end_tok - tok; | |
5419 | ||
5420 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5421 | { | |
5422 | tok = cond_start = end_tok + 1; | |
5423 | parse_exp_1 (&tok, block_for_pc (pc), 0); | |
5424 | cond_end = tok; | |
5425 | *cond_string = savestring (cond_start, | |
5426 | cond_end - cond_start); | |
5427 | } | |
5428 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5429 | { | |
5430 | char *tmptok; | |
5431 | ||
5432 | tok = end_tok + 1; | |
5433 | tmptok = tok; | |
5434 | *thread = strtol (tok, &tok, 0); | |
5435 | if (tok == tmptok) | |
5436 | error (_("Junk after thread keyword.")); | |
5437 | if (!valid_thread_id (*thread)) | |
5438 | error (_("Unknown thread %d."), *thread); | |
5439 | } | |
5440 | else | |
5441 | error (_("Junk at end of arguments.")); | |
5442 | } | |
5443 | } | |
5444 | ||
72b2ff0e VP |
5445 | /* Set a breakpoint. This function is shared between |
5446 | CLI and MI functions for setting a breakpoint. | |
5447 | This function has two major modes of operations, | |
5448 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5449 | If non-zero, the function will parse arg, extracting | |
5450 | breakpoint location, address and thread. Otherwise, | |
5451 | ARG is just the location of breakpoint, with condition | |
5452 | and thread specified by the COND_STRING and THREAD | |
5453 | parameters. */ | |
0101ce28 | 5454 | |
98deb0da | 5455 | static void |
72b2ff0e | 5456 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 VP |
5457 | int parse_condition_and_thread, |
5458 | int tempflag, int hardwareflag, | |
5459 | int ignore_count, | |
5460 | enum auto_boolean pending_break_support, | |
5461 | int from_tty) | |
c3f6f71d | 5462 | { |
71fff37b | 5463 | struct gdb_exception e; |
c3f6f71d | 5464 | struct symtabs_and_lines sals; |
0101ce28 | 5465 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5466 | char *copy_arg; |
5467 | char *err_msg; | |
c3f6f71d JM |
5468 | char *addr_start = arg; |
5469 | char **addr_string; | |
5470 | struct cleanup *old_chain; | |
5471 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5472 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5473 | int i; |
0101ce28 | 5474 | int pending = 0; |
0101ce28 | 5475 | int not_found = 0; |
c3f6f71d | 5476 | |
c3f6f71d JM |
5477 | sals.sals = NULL; |
5478 | sals.nelts = 0; | |
5479 | addr_string = NULL; | |
c3f6f71d | 5480 | |
0101ce28 JJ |
5481 | parse_args.arg_p = &arg; |
5482 | parse_args.sals_p = &sals; | |
5483 | parse_args.addr_string_p = &addr_string; | |
5484 | parse_args.not_found_ptr = ¬_found; | |
5485 | ||
05ff989b AC |
5486 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5487 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5488 | |
5489 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5490 | switch (e.reason) |
0101ce28 | 5491 | { |
05ff989b | 5492 | case RETURN_QUIT: |
98deb0da | 5493 | throw_exception (e); |
05ff989b AC |
5494 | case RETURN_ERROR: |
5495 | switch (e.error) | |
0101ce28 | 5496 | { |
05ff989b | 5497 | case NOT_FOUND_ERROR: |
0101ce28 | 5498 | |
05ff989b AC |
5499 | /* If pending breakpoint support is turned off, throw |
5500 | error. */ | |
fa8d40ab JJ |
5501 | |
5502 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5503 | throw_exception (e); |
5504 | ||
5505 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5506 | |
05ff989b AC |
5507 | /* If pending breakpoint support is auto query and the user |
5508 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5509 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5510 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5511 | return; |
fa8d40ab | 5512 | |
05ff989b AC |
5513 | /* At this point, either the user was queried about setting |
5514 | a pending breakpoint and selected yes, or pending | |
5515 | breakpoint behavior is on and thus a pending breakpoint | |
5516 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5517 | copy_arg = xstrdup (addr_start); |
5518 | addr_string = ©_arg; | |
5519 | sals.nelts = 1; | |
5520 | sals.sals = &pending_sal; | |
5521 | pending_sal.pc = 0; | |
5522 | pending = 1; | |
05ff989b AC |
5523 | break; |
5524 | default: | |
98deb0da | 5525 | throw_exception (e); |
0101ce28 | 5526 | } |
05ff989b AC |
5527 | default: |
5528 | if (!sals.nelts) | |
98deb0da | 5529 | return; |
0101ce28 | 5530 | } |
c3f6f71d JM |
5531 | |
5532 | /* Create a chain of things that always need to be cleaned up. */ | |
5533 | old_chain = make_cleanup (null_cleanup, 0); | |
5534 | ||
0101ce28 JJ |
5535 | if (!pending) |
5536 | { | |
5537 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5538 | make_cleanup (xfree, sals.sals); | |
5539 | ||
5540 | /* Cleanup the addr_string array but not its contents. */ | |
5541 | make_cleanup (xfree, addr_string); | |
5542 | } | |
c3f6f71d | 5543 | |
c3f6f71d JM |
5544 | /* ----------------------------- SNIP ----------------------------- |
5545 | Anything added to the cleanup chain beyond this point is assumed | |
5546 | to be part of a breakpoint. If the breakpoint create succeeds | |
5547 | then the memory is not reclaimed. */ | |
5548 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5549 | ||
5550 | /* Mark the contents of the addr_string for cleanup. These go on | |
5551 | the breakpoint_chain and only occure if the breakpoint create | |
5552 | fails. */ | |
5553 | for (i = 0; i < sals.nelts; i++) | |
5554 | { | |
5555 | if (addr_string[i] != NULL) | |
b8c9b27d | 5556 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5557 | } |
5558 | ||
5559 | /* Resolve all line numbers to PC's and verify that the addresses | |
5560 | are ok for the target. */ | |
0101ce28 JJ |
5561 | if (!pending) |
5562 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5563 | |
5564 | /* Verify that condition can be parsed, before setting any | |
5565 | breakpoints. Allocate a separate condition expression for each | |
5566 | breakpoint. */ | |
0101ce28 | 5567 | if (!pending) |
c3f6f71d | 5568 | { |
2f069f6f | 5569 | if (parse_condition_and_thread) |
72b2ff0e VP |
5570 | { |
5571 | /* Here we only parse 'arg' to separate condition | |
5572 | from thread number, so parsing in context of first | |
5573 | sal is OK. When setting the breakpoint we'll | |
5574 | re-parse it in context of each sal. */ | |
5575 | cond_string = NULL; | |
5576 | thread = -1; | |
5577 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, &thread); | |
5578 | if (cond_string) | |
5579 | make_cleanup (xfree, cond_string); | |
5580 | } | |
2f069f6f | 5581 | else |
72b2ff0e VP |
5582 | { |
5583 | /* Create a private copy of condition string. */ | |
5584 | if (cond_string) | |
5585 | { | |
5586 | cond_string = xstrdup (cond_string); | |
5587 | make_cleanup (xfree, cond_string); | |
5588 | } | |
5589 | } | |
018d34a4 | 5590 | create_breakpoints (sals, addr_string, cond_string, |
0101ce28 JJ |
5591 | hardwareflag ? bp_hardware_breakpoint |
5592 | : bp_breakpoint, | |
5593 | tempflag ? disp_del : disp_donttouch, | |
db107f19 | 5594 | thread, ignore_count, from_tty); |
c906108c | 5595 | } |
0101ce28 JJ |
5596 | else |
5597 | { | |
fe3f5fa8 | 5598 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5599 | struct breakpoint *b; |
5600 | ||
0101ce28 JJ |
5601 | make_cleanup (xfree, copy_arg); |
5602 | ||
0d381245 VP |
5603 | b = set_raw_breakpoint_without_location (hardwareflag |
5604 | ? bp_hardware_breakpoint | |
5605 | : bp_breakpoint); | |
0101ce28 JJ |
5606 | set_breakpoint_count (breakpoint_count + 1); |
5607 | b->number = breakpoint_count; | |
72b2ff0e | 5608 | b->thread = -1; |
018d34a4 | 5609 | b->addr_string = addr_string[0]; |
72b2ff0e | 5610 | b->cond_string = NULL; |
0101ce28 | 5611 | b->ignore_count = ignore_count; |
0101ce28 | 5612 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5613 | b->condition_not_parsed = 1; |
74960c60 VP |
5614 | |
5615 | update_global_location_list (); | |
0101ce28 JJ |
5616 | mention (b); |
5617 | } | |
5618 | ||
c3f6f71d | 5619 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5620 | warning (_("Multiple breakpoints were set.\n" |
5621 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5622 | /* That's it. Discard the cleanups for data inserted into the |
5623 | breakpoint. */ | |
5624 | discard_cleanups (breakpoint_chain); | |
5625 | /* But cleanup everything else. */ | |
5626 | do_cleanups (old_chain); | |
5627 | } | |
c906108c | 5628 | |
72b2ff0e VP |
5629 | /* Set a breakpoint. |
5630 | ARG is a string describing breakpoint address, | |
5631 | condition, and thread. | |
5632 | FLAG specifies if a breakpoint is hardware on, | |
5633 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5634 | and BP_TEMPFLAG. */ | |
5635 | ||
98deb0da | 5636 | static void |
72b2ff0e | 5637 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5638 | { |
72b2ff0e VP |
5639 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5640 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5641 | |
98deb0da VP |
5642 | break_command_really (arg, |
5643 | NULL, 0, 1 /* parse arg */, | |
5644 | tempflag, hardwareflag, | |
5645 | 0 /* Ignore count */, | |
5646 | pending_break_support, from_tty); | |
c906108c SS |
5647 | } |
5648 | ||
72b2ff0e | 5649 | |
98deb0da VP |
5650 | void |
5651 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5652 | int hardwareflag, int tempflag, |
ce43223b | 5653 | int thread, int ignore_count, |
98deb0da | 5654 | int pending) |
c3f6f71d | 5655 | { |
98deb0da VP |
5656 | break_command_really (address, condition, thread, |
5657 | 0 /* condition and thread are valid. */, | |
5658 | tempflag, hardwareflag, | |
5659 | ignore_count, | |
5660 | pending | |
5661 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
5662 | 0); | |
c3f6f71d JM |
5663 | } |
5664 | ||
6a048695 JB |
5665 | /* Adjust SAL to the first instruction past the function prologue. |
5666 | The end of the prologue is determined using the line table from | |
5667 | the debugging information. | |
5668 | ||
5669 | If SAL is already past the prologue, then do nothing. */ | |
5670 | ||
5671 | static void | |
5672 | skip_prologue_sal (struct symtab_and_line *sal) | |
5673 | { | |
5674 | struct symbol *sym = find_pc_function (sal->pc); | |
5675 | struct symtab_and_line start_sal; | |
5676 | ||
5677 | if (sym == NULL) | |
5678 | return; | |
5679 | ||
5680 | start_sal = find_function_start_sal (sym, 1); | |
5681 | if (sal->pc < start_sal.pc) | |
5682 | *sal = start_sal; | |
5683 | } | |
c3f6f71d | 5684 | |
c906108c SS |
5685 | /* Helper function for break_command_1 and disassemble_command. */ |
5686 | ||
5687 | void | |
fba45db2 | 5688 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5689 | { |
5690 | CORE_ADDR pc; | |
5691 | ||
5692 | if (sal->pc == 0 && sal->symtab != NULL) | |
5693 | { | |
5694 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5695 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5696 | sal->line, sal->symtab->filename); |
5697 | sal->pc = pc; | |
6a048695 JB |
5698 | |
5699 | /* If this SAL corresponds to a breakpoint inserted using | |
5700 | a line number, then skip the function prologue if necessary. */ | |
5701 | if (sal->explicit_line) | |
5702 | skip_prologue_sal (sal); | |
c906108c SS |
5703 | } |
5704 | ||
5705 | if (sal->section == 0 && sal->symtab != NULL) | |
5706 | { | |
5707 | struct blockvector *bv; | |
c5aa993b JM |
5708 | struct block *b; |
5709 | struct symbol *sym; | |
c906108c | 5710 | |
801e3a5b | 5711 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5712 | if (bv != NULL) |
5713 | { | |
c906108c SS |
5714 | sym = block_function (b); |
5715 | if (sym != NULL) | |
5716 | { | |
5717 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5718 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5719 | } | |
5720 | else | |
5721 | { | |
5722 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5723 | have to look harder. This case can be executed if we have |
5724 | line numbers but no functions (as can happen in assembly | |
5725 | source). */ | |
c906108c | 5726 | |
c5aa993b | 5727 | struct minimal_symbol *msym; |
c906108c SS |
5728 | |
5729 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5730 | if (msym) | |
5731 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5732 | } | |
5733 | } | |
5734 | } | |
5735 | } | |
5736 | ||
5737 | void | |
fba45db2 | 5738 | break_command (char *arg, int from_tty) |
c906108c | 5739 | { |
db107f19 | 5740 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5741 | } |
5742 | ||
c906108c | 5743 | void |
fba45db2 | 5744 | tbreak_command (char *arg, int from_tty) |
c906108c | 5745 | { |
db107f19 | 5746 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
5747 | } |
5748 | ||
c906108c | 5749 | static void |
fba45db2 | 5750 | hbreak_command (char *arg, int from_tty) |
c906108c | 5751 | { |
db107f19 | 5752 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
5753 | } |
5754 | ||
5755 | static void | |
fba45db2 | 5756 | thbreak_command (char *arg, int from_tty) |
c906108c | 5757 | { |
db107f19 | 5758 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
5759 | } |
5760 | ||
5761 | static void | |
fba45db2 | 5762 | stop_command (char *arg, int from_tty) |
c906108c | 5763 | { |
a3f17187 | 5764 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5765 | Usage: stop in <function | address>\n\ |
a3f17187 | 5766 | stop at <line>\n")); |
c906108c SS |
5767 | } |
5768 | ||
5769 | static void | |
fba45db2 | 5770 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5771 | { |
5772 | int badInput = 0; | |
5773 | ||
c5aa993b | 5774 | if (arg == (char *) NULL) |
c906108c SS |
5775 | badInput = 1; |
5776 | else if (*arg != '*') | |
5777 | { | |
5778 | char *argptr = arg; | |
5779 | int hasColon = 0; | |
5780 | ||
53a5351d JM |
5781 | /* look for a ':'. If this is a line number specification, then |
5782 | say it is bad, otherwise, it should be an address or | |
5783 | function/method name */ | |
c906108c | 5784 | while (*argptr && !hasColon) |
c5aa993b JM |
5785 | { |
5786 | hasColon = (*argptr == ':'); | |
5787 | argptr++; | |
5788 | } | |
c906108c SS |
5789 | |
5790 | if (hasColon) | |
c5aa993b | 5791 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5792 | else |
c5aa993b | 5793 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5794 | } |
5795 | ||
5796 | if (badInput) | |
a3f17187 | 5797 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5798 | else |
db107f19 | 5799 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5800 | } |
5801 | ||
5802 | static void | |
fba45db2 | 5803 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5804 | { |
5805 | int badInput = 0; | |
5806 | ||
c5aa993b | 5807 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5808 | badInput = 1; |
5809 | else | |
5810 | { | |
5811 | char *argptr = arg; | |
5812 | int hasColon = 0; | |
5813 | ||
5814 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5815 | it is probably a line number. */ |
c906108c | 5816 | while (*argptr && !hasColon) |
c5aa993b JM |
5817 | { |
5818 | hasColon = (*argptr == ':'); | |
5819 | argptr++; | |
5820 | } | |
c906108c SS |
5821 | |
5822 | if (hasColon) | |
c5aa993b | 5823 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5824 | else |
c5aa993b | 5825 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5826 | } |
5827 | ||
5828 | if (badInput) | |
a3f17187 | 5829 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5830 | else |
db107f19 | 5831 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5832 | } |
5833 | ||
53a5351d JM |
5834 | /* accessflag: hw_write: watch write, |
5835 | hw_read: watch read, | |
5836 | hw_access: watch access (read or write) */ | |
c906108c | 5837 | static void |
fba45db2 | 5838 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 5839 | { |
d983da9c | 5840 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
5841 | struct symtab_and_line sal; |
5842 | struct expression *exp; | |
5843 | struct block *exp_valid_block; | |
5844 | struct value *val, *mark; | |
5845 | struct frame_info *frame; | |
5846 | struct frame_info *prev_frame = NULL; | |
5847 | char *exp_start = NULL; | |
5848 | char *exp_end = NULL; | |
37e4754d | 5849 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
5850 | int toklen; |
5851 | char *cond_start = NULL; | |
5852 | char *cond_end = NULL; | |
5853 | struct expression *cond = NULL; | |
5854 | int i, other_type_used, target_resources_ok = 0; | |
5855 | enum bptype bp_type; | |
5856 | int mem_cnt = 0; | |
37e4754d | 5857 | int thread = -1; |
c906108c | 5858 | |
fe39c653 | 5859 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5860 | |
37e4754d LM |
5861 | /* Make sure that we actually have parameters to parse. */ |
5862 | if (arg != NULL && arg[0] != '\0') | |
5863 | { | |
5864 | toklen = strlen (arg); /* Size of argument list. */ | |
5865 | ||
5866 | /* Points tok to the end of the argument list. */ | |
5867 | tok = arg + toklen - 1; | |
5868 | ||
5869 | /* Go backwards in the parameters list. Skip the last parameter. | |
5870 | If we're expecting a 'thread <thread_num>' parameter, this should | |
5871 | be the thread identifier. */ | |
5872 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5873 | tok--; | |
5874 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5875 | tok--; | |
5876 | ||
5877 | /* Points end_tok to the beginning of the last token. */ | |
5878 | id_tok_start = tok + 1; | |
5879 | ||
5880 | /* Go backwards in the parameters list. Skip one more parameter. | |
5881 | If we're expecting a 'thread <thread_num>' parameter, we should | |
5882 | reach a "thread" token. */ | |
5883 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5884 | tok--; | |
5885 | ||
5886 | end_tok = tok; | |
5887 | ||
5888 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5889 | tok--; | |
5890 | ||
5891 | /* Move the pointer forward to skip the whitespace and | |
5892 | calculate the length of the token. */ | |
5893 | tok++; | |
5894 | toklen = end_tok - tok; | |
5895 | ||
5896 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5897 | { | |
5898 | /* At this point we've found a "thread" token, which means | |
5899 | the user is trying to set a watchpoint that triggers | |
5900 | only in a specific thread. */ | |
5901 | char *endp; | |
5902 | ||
5903 | /* Extract the thread ID from the next token. */ | |
5904 | thread = strtol (id_tok_start, &endp, 0); | |
5905 | ||
5906 | /* Check if the user provided a valid numeric value for the | |
5907 | thread ID. */ | |
5908 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
5909 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
5910 | ||
5911 | /* Check if the thread actually exists. */ | |
5912 | if (!valid_thread_id (thread)) | |
5913 | error (_("Unknown thread %d."), thread); | |
5914 | ||
5915 | /* Truncate the string and get rid of the thread <thread_num> | |
5916 | parameter before the parameter list is parsed by the | |
5917 | evaluate_expression() function. */ | |
5918 | *tok = '\0'; | |
5919 | } | |
5920 | } | |
5921 | ||
5922 | /* Parse the rest of the arguments. */ | |
c906108c SS |
5923 | innermost_block = NULL; |
5924 | exp_start = arg; | |
5925 | exp = parse_exp_1 (&arg, 0, 0); | |
5926 | exp_end = arg; | |
5927 | exp_valid_block = innermost_block; | |
5928 | mark = value_mark (); | |
fa4727a6 DJ |
5929 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
5930 | if (val != NULL) | |
5931 | release_value (val); | |
c906108c SS |
5932 | |
5933 | tok = arg; | |
5934 | while (*tok == ' ' || *tok == '\t') | |
5935 | tok++; | |
5936 | end_tok = tok; | |
5937 | ||
5938 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5939 | end_tok++; | |
5940 | ||
5941 | toklen = end_tok - tok; | |
5942 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5943 | { | |
5944 | tok = cond_start = end_tok + 1; | |
5945 | cond = parse_exp_1 (&tok, 0, 0); | |
5946 | cond_end = tok; | |
5947 | } | |
5948 | if (*tok) | |
8a3fe4f8 | 5949 | error (_("Junk at end of command.")); |
c906108c | 5950 | |
53a5351d | 5951 | if (accessflag == hw_read) |
c5aa993b | 5952 | bp_type = bp_read_watchpoint; |
53a5351d | 5953 | else if (accessflag == hw_access) |
c5aa993b JM |
5954 | bp_type = bp_access_watchpoint; |
5955 | else | |
5956 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5957 | |
5958 | mem_cnt = can_use_hardware_watchpoint (val); | |
5959 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 5960 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
5961 | if (mem_cnt != 0) |
5962 | { | |
5963 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5964 | target_resources_ok = |
5965 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5966 | other_type_used); | |
c5aa993b | 5967 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5968 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 5969 | |
c5aa993b | 5970 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5971 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 5972 | } |
c906108c | 5973 | |
4d28f7a8 KB |
5974 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5975 | watchpoint could not be set. */ | |
5976 | if (!mem_cnt || target_resources_ok <= 0) | |
5977 | bp_type = bp_watchpoint; | |
5978 | ||
d983da9c DJ |
5979 | frame = block_innermost_frame (exp_valid_block); |
5980 | if (frame) | |
5981 | prev_frame = get_prev_frame (frame); | |
5982 | else | |
5983 | prev_frame = NULL; | |
5984 | ||
5985 | /* If the expression is "local", then set up a "watchpoint scope" | |
5986 | breakpoint at the point where we've left the scope of the watchpoint | |
5987 | expression. Create the scope breakpoint before the watchpoint, so | |
5988 | that we will encounter it first in bpstat_stop_status. */ | |
5989 | if (innermost_block && prev_frame) | |
5990 | { | |
5991 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
5992 | bp_watchpoint_scope); | |
5993 | ||
5994 | scope_breakpoint->enable_state = bp_enabled; | |
5995 | ||
5996 | /* Automatically delete the breakpoint when it hits. */ | |
5997 | scope_breakpoint->disposition = disp_del; | |
5998 | ||
5999 | /* Only break in the proper frame (help with recursion). */ | |
6000 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
6001 | ||
6002 | /* Set the address at which we will stop. */ | |
6003 | scope_breakpoint->loc->requested_address | |
6004 | = get_frame_pc (prev_frame); | |
6005 | scope_breakpoint->loc->address | |
6006 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
6007 | scope_breakpoint->type); | |
6008 | } | |
6009 | ||
c906108c | 6010 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6011 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6012 | set_breakpoint_count (breakpoint_count + 1); |
6013 | b->number = breakpoint_count; | |
37e4754d | 6014 | b->thread = thread; |
b5de0fa7 | 6015 | b->disposition = disp_donttouch; |
c906108c SS |
6016 | b->exp = exp; |
6017 | b->exp_valid_block = exp_valid_block; | |
6018 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6019 | b->val = val; | |
fa4727a6 | 6020 | b->val_valid = 1; |
511a6cd4 | 6021 | b->loc->cond = cond; |
c906108c SS |
6022 | if (cond_start) |
6023 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6024 | else | |
6025 | b->cond_string = 0; | |
c5aa993b | 6026 | |
c906108c | 6027 | if (frame) |
d983da9c | 6028 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6029 | else |
35a487f1 | 6030 | b->watchpoint_frame = null_frame_id; |
c906108c | 6031 | |
d983da9c | 6032 | if (scope_breakpoint != NULL) |
c906108c | 6033 | { |
d983da9c DJ |
6034 | /* The scope breakpoint is related to the watchpoint. We will |
6035 | need to act on them together. */ | |
6036 | b->related_breakpoint = scope_breakpoint; | |
6037 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6038 | } |
d983da9c | 6039 | |
c906108c SS |
6040 | value_free_to_mark (mark); |
6041 | mention (b); | |
74960c60 | 6042 | update_global_location_list (); |
c906108c SS |
6043 | } |
6044 | ||
6045 | /* Return count of locations need to be watched and can be handled | |
6046 | in hardware. If the watchpoint can not be handled | |
6047 | in hardware return zero. */ | |
6048 | ||
c906108c | 6049 | static int |
fba45db2 | 6050 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6051 | { |
6052 | int found_memory_cnt = 0; | |
2e70b7b9 | 6053 | struct value *head = v; |
c906108c SS |
6054 | |
6055 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6056 | if (!can_use_hw_watchpoints) |
c906108c | 6057 | return 0; |
c5aa993b | 6058 | |
5c44784c JM |
6059 | /* Make sure that the value of the expression depends only upon |
6060 | memory contents, and values computed from them within GDB. If we | |
6061 | find any register references or function calls, we can't use a | |
6062 | hardware watchpoint. | |
6063 | ||
6064 | The idea here is that evaluating an expression generates a series | |
6065 | of values, one holding the value of every subexpression. (The | |
6066 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6067 | a*b+c.) GDB's values hold almost enough information to establish | |
6068 | the criteria given above --- they identify memory lvalues, | |
6069 | register lvalues, computed values, etcetera. So we can evaluate | |
6070 | the expression, and then scan the chain of values that leaves | |
6071 | behind to decide whether we can detect any possible change to the | |
6072 | expression's final value using only hardware watchpoints. | |
6073 | ||
6074 | However, I don't think that the values returned by inferior | |
6075 | function calls are special in any way. So this function may not | |
6076 | notice that an expression involving an inferior function call | |
6077 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6078 | for (; v; v = value_next (v)) |
c906108c | 6079 | { |
5c44784c | 6080 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6081 | { |
d69fe07e | 6082 | if (value_lazy (v)) |
5c44784c JM |
6083 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6084 | we either just used its address (e.g., `a' in `a.b') or | |
6085 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6086 | ; | |
53a5351d | 6087 | else |
5c44784c JM |
6088 | { |
6089 | /* Ahh, memory we actually used! Check if we can cover | |
6090 | it with hardware watchpoints. */ | |
df407dfe | 6091 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6092 | |
6093 | /* We only watch structs and arrays if user asked for it | |
6094 | explicitly, never if they just happen to appear in a | |
6095 | middle of some value chain. */ | |
6096 | if (v == head | |
6097 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6098 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6099 | { | |
df407dfe AC |
6100 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
6101 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
6102 | |
6103 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
6104 | return 0; | |
6105 | else | |
6106 | found_memory_cnt++; | |
6107 | } | |
5c44784c | 6108 | } |
c5aa993b | 6109 | } |
5086187c AC |
6110 | else if (VALUE_LVAL (v) != not_lval |
6111 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6112 | return 0; /* ??? What does this represent? */ |
5086187c | 6113 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6114 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6115 | } |
6116 | ||
6117 | /* The expression itself looks suitable for using a hardware | |
6118 | watchpoint, but give the target machine a chance to reject it. */ | |
6119 | return found_memory_cnt; | |
6120 | } | |
6121 | ||
8b93c638 | 6122 | void |
fba45db2 | 6123 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6124 | { |
6125 | watch_command (arg, from_tty); | |
6126 | } | |
8926118c | 6127 | |
c5aa993b | 6128 | static void |
fba45db2 | 6129 | watch_command (char *arg, int from_tty) |
c906108c | 6130 | { |
53a5351d | 6131 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6132 | } |
6133 | ||
8b93c638 | 6134 | void |
fba45db2 | 6135 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6136 | { |
6137 | rwatch_command (arg, from_tty); | |
6138 | } | |
8926118c | 6139 | |
c5aa993b | 6140 | static void |
fba45db2 | 6141 | rwatch_command (char *arg, int from_tty) |
c906108c | 6142 | { |
53a5351d | 6143 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6144 | } |
6145 | ||
8b93c638 | 6146 | void |
fba45db2 | 6147 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6148 | { |
6149 | awatch_command (arg, from_tty); | |
6150 | } | |
8926118c | 6151 | |
c5aa993b | 6152 | static void |
fba45db2 | 6153 | awatch_command (char *arg, int from_tty) |
c906108c | 6154 | { |
53a5351d | 6155 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6156 | } |
c906108c | 6157 | \f |
c5aa993b | 6158 | |
43ff13b4 | 6159 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6160 | because it uses the mechanisms of breakpoints. */ |
6161 | ||
43ff13b4 JM |
6162 | /* This function is called by fetch_inferior_event via the |
6163 | cmd_continuation pointer, to complete the until command. It takes | |
6164 | care of cleaning up the temporary breakpoints set up by the until | |
6165 | command. */ | |
c2c6d25f | 6166 | static void |
f107f563 | 6167 | until_break_command_continuation (struct continuation_arg *arg, int error) |
43ff13b4 | 6168 | { |
f107f563 VP |
6169 | delete_breakpoint ((struct breakpoint *)(arg->data.pointer)); |
6170 | if (arg->next) | |
6171 | delete_breakpoint ((struct breakpoint *)(arg->next->data.pointer)); | |
43ff13b4 JM |
6172 | } |
6173 | ||
c906108c | 6174 | void |
ae66c1fc | 6175 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6176 | { |
6177 | struct symtabs_and_lines sals; | |
6178 | struct symtab_and_line sal; | |
206415a3 DJ |
6179 | struct frame_info *frame = get_selected_frame (NULL); |
6180 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6181 | struct breakpoint *breakpoint; |
f107f563 | 6182 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 6183 | struct cleanup *old_chain; |
0d06e24b | 6184 | struct continuation_arg *arg1; |
f107f563 | 6185 | struct continuation_arg *arg2; |
0d06e24b | 6186 | |
c906108c SS |
6187 | |
6188 | clear_proceed_status (); | |
6189 | ||
6190 | /* Set a breakpoint where the user wants it and at return from | |
6191 | this function */ | |
c5aa993b | 6192 | |
c906108c SS |
6193 | if (default_breakpoint_valid) |
6194 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6195 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6196 | else |
53a5351d | 6197 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6198 | 0, (char ***) NULL, NULL); |
c5aa993b | 6199 | |
c906108c | 6200 | if (sals.nelts != 1) |
8a3fe4f8 | 6201 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6202 | |
c906108c | 6203 | sal = sals.sals[0]; |
b8c9b27d | 6204 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6205 | |
c906108c | 6206 | if (*arg) |
8a3fe4f8 | 6207 | error (_("Junk at end of arguments.")); |
c5aa993b | 6208 | |
c906108c | 6209 | resolve_sal_pc (&sal); |
c5aa993b | 6210 | |
ae66c1fc EZ |
6211 | if (anywhere) |
6212 | /* If the user told us to continue until a specified location, | |
6213 | we don't specify a frame at which we need to stop. */ | |
6214 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6215 | else | |
6216 | /* Otherwise, specify the current frame, because we want to stop only | |
6217 | at the very same frame. */ | |
206415a3 | 6218 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6219 | bp_until); |
c5aa993b | 6220 | |
f107f563 | 6221 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6222 | |
ae66c1fc EZ |
6223 | /* Keep within the current frame, or in frames called by the current |
6224 | one. */ | |
c906108c SS |
6225 | if (prev_frame) |
6226 | { | |
30f7db39 AC |
6227 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6228 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6229 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6230 | bp_until); | |
6231 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6232 | } |
c5aa993b | 6233 | |
c906108c | 6234 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6235 | |
6236 | /* If we are running asynchronously, and proceed call above has actually | |
6237 | managed to start the target, arrange for breakpoints to be | |
6238 | deleted when the target stops. Otherwise, we're already stopped and | |
6239 | delete breakpoints via cleanup chain. */ | |
6240 | ||
6241 | if (target_can_async_p () && target_executing) | |
6242 | { | |
6243 | arg1 = | |
6244 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
6245 | arg1->next = NULL; | |
6246 | arg1->data.pointer = breakpoint; | |
6247 | ||
6248 | if (breakpoint2) | |
6249 | { | |
6250 | arg2 = (struct continuation_arg *) | |
6251 | xmalloc ( sizeof (struct continuation_arg)); | |
6252 | arg2->next = NULL; | |
6253 | arg2->data.pointer = breakpoint2; | |
6254 | arg1->next = arg2; | |
6255 | } | |
6256 | ||
6257 | discard_cleanups (old_chain); | |
6258 | add_continuation (until_break_command_continuation, arg1); | |
6259 | } | |
6260 | else | |
c5aa993b | 6261 | do_cleanups (old_chain); |
c906108c | 6262 | } |
ae66c1fc | 6263 | |
c906108c | 6264 | static void |
fba45db2 | 6265 | ep_skip_leading_whitespace (char **s) |
c906108c | 6266 | { |
c5aa993b JM |
6267 | if ((s == NULL) || (*s == NULL)) |
6268 | return; | |
6269 | while (isspace (**s)) | |
6270 | *s += 1; | |
c906108c | 6271 | } |
c5aa993b | 6272 | |
c906108c SS |
6273 | /* This function examines a string, and attempts to find a token |
6274 | that might be an event name in the leading characters. If a | |
6275 | possible match is found, a pointer to the last character of | |
6276 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6277 | |
c906108c | 6278 | static char * |
fba45db2 | 6279 | ep_find_event_name_end (char *arg) |
c906108c | 6280 | { |
c5aa993b JM |
6281 | char *s = arg; |
6282 | char *event_name_end = NULL; | |
6283 | ||
c906108c SS |
6284 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6285 | if (arg == NULL) | |
6286 | return NULL; | |
c5aa993b | 6287 | |
c906108c | 6288 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6289 | Basically, we're looking for alphanumerics and underscores; |
6290 | anything else delimites the token. */ | |
c906108c SS |
6291 | while (*s != '\0') |
6292 | { | |
c5aa993b JM |
6293 | if (!isalnum (*s) && (*s != '_')) |
6294 | break; | |
c906108c SS |
6295 | event_name_end = s; |
6296 | s++; | |
6297 | } | |
c5aa993b | 6298 | |
c906108c SS |
6299 | return event_name_end; |
6300 | } | |
6301 | ||
c5aa993b | 6302 | |
c906108c SS |
6303 | /* This function attempts to parse an optional "if <cond>" clause |
6304 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6305 | |
c906108c SS |
6306 | Else, it returns a pointer to the condition string. (It does not |
6307 | attempt to evaluate the string against a particular block.) And, | |
6308 | it updates arg to point to the first character following the parsed | |
6309 | if clause in the arg string. */ | |
53a5351d | 6310 | |
c906108c | 6311 | static char * |
fba45db2 | 6312 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6313 | { |
c5aa993b JM |
6314 | char *cond_string; |
6315 | ||
6316 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6317 | return NULL; |
c5aa993b | 6318 | |
c906108c SS |
6319 | /* Skip the "if" keyword. */ |
6320 | (*arg) += 2; | |
c5aa993b | 6321 | |
c906108c SS |
6322 | /* Skip any extra leading whitespace, and record the start of the |
6323 | condition string. */ | |
6324 | ep_skip_leading_whitespace (arg); | |
6325 | cond_string = *arg; | |
c5aa993b | 6326 | |
c906108c SS |
6327 | /* Assume that the condition occupies the remainder of the arg string. */ |
6328 | (*arg) += strlen (cond_string); | |
c5aa993b | 6329 | |
c906108c SS |
6330 | return cond_string; |
6331 | } | |
c5aa993b | 6332 | |
c906108c SS |
6333 | /* This function attempts to parse an optional filename from the arg |
6334 | string. If one is not found, it returns NULL. | |
c5aa993b | 6335 | |
c906108c SS |
6336 | Else, it returns a pointer to the parsed filename. (This function |
6337 | makes no attempt to verify that a file of that name exists, or is | |
6338 | accessible.) And, it updates arg to point to the first character | |
6339 | following the parsed filename in the arg string. | |
c5aa993b | 6340 | |
c906108c SS |
6341 | Note that clients needing to preserve the returned filename for |
6342 | future access should copy it to their own buffers. */ | |
6343 | static char * | |
fba45db2 | 6344 | ep_parse_optional_filename (char **arg) |
c906108c | 6345 | { |
c5aa993b JM |
6346 | static char filename[1024]; |
6347 | char *arg_p = *arg; | |
6348 | int i; | |
6349 | char c; | |
6350 | ||
c906108c SS |
6351 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6352 | return NULL; | |
c5aa993b JM |
6353 | |
6354 | for (i = 0;; i++) | |
c906108c SS |
6355 | { |
6356 | c = *arg_p; | |
6357 | if (isspace (c)) | |
c5aa993b | 6358 | c = '\0'; |
c906108c SS |
6359 | filename[i] = c; |
6360 | if (c == '\0') | |
c5aa993b | 6361 | break; |
c906108c SS |
6362 | arg_p++; |
6363 | } | |
6364 | *arg = arg_p; | |
c5aa993b | 6365 | |
c906108c SS |
6366 | return filename; |
6367 | } | |
c5aa993b | 6368 | |
c906108c SS |
6369 | /* Commands to deal with catching events, such as signals, exceptions, |
6370 | process start/exit, etc. */ | |
c5aa993b JM |
6371 | |
6372 | typedef enum | |
6373 | { | |
6374 | catch_fork, catch_vfork | |
6375 | } | |
6376 | catch_fork_kind; | |
6377 | ||
c906108c | 6378 | static void |
fba45db2 KB |
6379 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6380 | int from_tty) | |
c906108c | 6381 | { |
c5aa993b JM |
6382 | char *cond_string = NULL; |
6383 | ||
c906108c | 6384 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6385 | |
c906108c | 6386 | /* The allowed syntax is: |
c5aa993b JM |
6387 | catch [v]fork |
6388 | catch [v]fork if <cond> | |
6389 | ||
c906108c SS |
6390 | First, check if there's an if clause. */ |
6391 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6392 | |
c906108c | 6393 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6394 | error (_("Junk at end of arguments.")); |
c5aa993b | 6395 | |
c906108c SS |
6396 | /* If this target supports it, create a fork or vfork catchpoint |
6397 | and enable reporting of such events. */ | |
c5aa993b JM |
6398 | switch (fork_kind) |
6399 | { | |
6400 | case catch_fork: | |
c906108c SS |
6401 | create_fork_event_catchpoint (tempflag, cond_string); |
6402 | break; | |
c5aa993b | 6403 | case catch_vfork: |
c906108c SS |
6404 | create_vfork_event_catchpoint (tempflag, cond_string); |
6405 | break; | |
c5aa993b | 6406 | default: |
8a3fe4f8 | 6407 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6408 | break; |
c5aa993b | 6409 | } |
c906108c SS |
6410 | } |
6411 | ||
6412 | static void | |
fba45db2 | 6413 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6414 | { |
c5aa993b | 6415 | char *cond_string = NULL; |
c906108c SS |
6416 | |
6417 | ep_skip_leading_whitespace (&arg); | |
6418 | ||
6419 | /* The allowed syntax is: | |
c5aa993b JM |
6420 | catch exec |
6421 | catch exec if <cond> | |
c906108c SS |
6422 | |
6423 | First, check if there's an if clause. */ | |
6424 | cond_string = ep_parse_optional_if_clause (&arg); | |
6425 | ||
6426 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6427 | error (_("Junk at end of arguments.")); |
c906108c SS |
6428 | |
6429 | /* If this target supports it, create an exec catchpoint | |
6430 | and enable reporting of such events. */ | |
6431 | create_exec_event_catchpoint (tempflag, cond_string); | |
6432 | } | |
c5aa993b | 6433 | |
c906108c | 6434 | static void |
fba45db2 | 6435 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6436 | { |
c5aa993b JM |
6437 | char *dll_pathname = NULL; |
6438 | char *cond_string = NULL; | |
6439 | ||
c906108c | 6440 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6441 | |
c906108c | 6442 | /* The allowed syntax is: |
c5aa993b JM |
6443 | catch load |
6444 | catch load if <cond> | |
6445 | catch load <filename> | |
6446 | catch load <filename> if <cond> | |
6447 | ||
c906108c SS |
6448 | The user is not allowed to specify the <filename> after an |
6449 | if clause. | |
c5aa993b | 6450 | |
c906108c | 6451 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6452 | |
c906108c SS |
6453 | First, check if there's an if clause. If so, then there |
6454 | cannot be a filename. */ | |
6455 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6456 | |
c906108c SS |
6457 | /* If there was an if clause, then there cannot be a filename. |
6458 | Else, there might be a filename and an if clause. */ | |
6459 | if (cond_string == NULL) | |
6460 | { | |
6461 | dll_pathname = ep_parse_optional_filename (&arg); | |
6462 | ep_skip_leading_whitespace (&arg); | |
6463 | cond_string = ep_parse_optional_if_clause (&arg); | |
6464 | } | |
c5aa993b | 6465 | |
c906108c | 6466 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6467 | error (_("Junk at end of arguments.")); |
c5aa993b | 6468 | |
c906108c SS |
6469 | /* Create a load breakpoint that only triggers when a load of |
6470 | the specified dll (or any dll, if no pathname was specified) | |
6471 | occurs. */ | |
39f77062 | 6472 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6473 | dll_pathname, cond_string); |
c906108c | 6474 | } |
c5aa993b | 6475 | |
c906108c | 6476 | static void |
fba45db2 | 6477 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6478 | { |
c5aa993b JM |
6479 | char *dll_pathname = NULL; |
6480 | char *cond_string = NULL; | |
6481 | ||
c906108c | 6482 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6483 | |
c906108c | 6484 | /* The allowed syntax is: |
c5aa993b JM |
6485 | catch unload |
6486 | catch unload if <cond> | |
6487 | catch unload <filename> | |
6488 | catch unload <filename> if <cond> | |
6489 | ||
c906108c SS |
6490 | The user is not allowed to specify the <filename> after an |
6491 | if clause. | |
c5aa993b | 6492 | |
c906108c | 6493 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6494 | |
c906108c SS |
6495 | First, check if there's an if clause. If so, then there |
6496 | cannot be a filename. */ | |
6497 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6498 | |
c906108c SS |
6499 | /* If there was an if clause, then there cannot be a filename. |
6500 | Else, there might be a filename and an if clause. */ | |
6501 | if (cond_string == NULL) | |
6502 | { | |
6503 | dll_pathname = ep_parse_optional_filename (&arg); | |
6504 | ep_skip_leading_whitespace (&arg); | |
6505 | cond_string = ep_parse_optional_if_clause (&arg); | |
6506 | } | |
c5aa993b | 6507 | |
c906108c | 6508 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6509 | error (_("Junk at end of arguments.")); |
c5aa993b | 6510 | |
c906108c SS |
6511 | /* Create an unload breakpoint that only triggers when an unload of |
6512 | the specified dll (or any dll, if no pathname was specified) | |
6513 | occurs. */ | |
39f77062 | 6514 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6515 | dll_pathname, cond_string); |
c906108c | 6516 | } |
c906108c | 6517 | |
3086aeae DJ |
6518 | static enum print_stop_action |
6519 | print_exception_catchpoint (struct breakpoint *b) | |
6520 | { | |
6521 | annotate_catchpoint (b->number); | |
6522 | ||
6523 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6524 | printf_filtered (_("\nCatchpoint %d (exception thrown)\n"), |
3086aeae DJ |
6525 | b->number); |
6526 | else | |
a3f17187 | 6527 | printf_filtered (_("\nCatchpoint %d (exception caught)\n"), |
3086aeae DJ |
6528 | b->number); |
6529 | ||
6530 | return PRINT_SRC_AND_LOC; | |
6531 | } | |
6532 | ||
6533 | static void | |
6534 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6535 | { | |
6536 | if (addressprint) | |
6537 | { | |
6538 | annotate_field (4); | |
5cab636d | 6539 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6540 | } |
6541 | annotate_field (5); | |
5cab636d | 6542 | *last_addr = b->loc->address; |
3086aeae DJ |
6543 | if (strstr (b->addr_string, "throw") != NULL) |
6544 | ui_out_field_string (uiout, "what", "exception throw"); | |
6545 | else | |
6546 | ui_out_field_string (uiout, "what", "exception catch"); | |
6547 | } | |
6548 | ||
6549 | static void | |
6550 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6551 | { | |
6552 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6553 | printf_filtered (_("Catchpoint %d (throw)"), b->number); |
3086aeae | 6554 | else |
a3f17187 | 6555 | printf_filtered (_("Catchpoint %d (catch)"), b->number); |
3086aeae DJ |
6556 | } |
6557 | ||
6558 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6559 | print_exception_catchpoint, | |
6560 | print_one_exception_catchpoint, | |
6561 | print_mention_exception_catchpoint | |
6562 | }; | |
6563 | ||
6564 | static int | |
6565 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6566 | enum exception_event_kind ex_event, int from_tty) | |
6567 | { | |
6568 | char *trigger_func_name, *nameptr; | |
6569 | struct symtabs_and_lines sals; | |
6570 | struct breakpoint *b; | |
6571 | ||
6572 | if (ex_event == EX_EVENT_CATCH) | |
6573 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6574 | else | |
6575 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6576 | ||
6577 | nameptr = trigger_func_name; | |
68219205 | 6578 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6579 | if (sals.nelts == 0) |
6580 | { | |
b59661bd | 6581 | xfree (trigger_func_name); |
3086aeae DJ |
6582 | return 0; |
6583 | } | |
6584 | ||
6585 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6586 | set_breakpoint_count (breakpoint_count + 1); | |
6587 | b->number = breakpoint_count; | |
3086aeae DJ |
6588 | b->cond_string = (cond_string == NULL) ? |
6589 | NULL : savestring (cond_string, strlen (cond_string)); | |
6590 | b->thread = -1; | |
6591 | b->addr_string = trigger_func_name; | |
6592 | b->enable_state = bp_enabled; | |
6593 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6594 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6595 | ||
b59661bd | 6596 | xfree (sals.sals); |
3086aeae | 6597 | mention (b); |
74960c60 | 6598 | update_global_location_list (); |
3086aeae DJ |
6599 | return 1; |
6600 | } | |
6601 | ||
c5aa993b | 6602 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6603 | |
6604 | static void | |
fba45db2 KB |
6605 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6606 | int tempflag, int from_tty) | |
c906108c | 6607 | { |
c5aa993b JM |
6608 | char *cond_string = NULL; |
6609 | struct symtab_and_line *sal = NULL; | |
6610 | ||
c906108c | 6611 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6612 | |
c906108c SS |
6613 | cond_string = ep_parse_optional_if_clause (&arg); |
6614 | ||
6615 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6616 | error (_("Junk at end of arguments.")); |
c906108c SS |
6617 | |
6618 | if ((ex_event != EX_EVENT_THROW) && | |
6619 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6620 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6621 | |
3086aeae DJ |
6622 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6623 | return; | |
6624 | ||
8a3fe4f8 | 6625 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6626 | } |
6627 | ||
f7f9143b JB |
6628 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6629 | ||
6630 | static void | |
6631 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6632 | char *addr_string, | |
6633 | char *exp_string, | |
6634 | char *cond_string, | |
6635 | struct expression *cond, | |
6636 | struct breakpoint_ops *ops, | |
6637 | int tempflag, | |
6638 | int from_tty) | |
6639 | { | |
6640 | struct breakpoint *b; | |
6641 | ||
6642 | if (from_tty) | |
6643 | { | |
6644 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6645 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6646 | version for exception catchpoints, because two catchpoints | |
6647 | used for different exception names will use the same address. | |
6648 | In this case, a "breakpoint ... also set at..." warning is | |
6649 | unproductive. Besides. the warning phrasing is also a bit | |
6650 | inapropriate, we should use the word catchpoint, and tell | |
6651 | the user what type of catchpoint it is. The above is good | |
6652 | enough for now, though. */ | |
6653 | } | |
6654 | ||
6655 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6656 | set_breakpoint_count (breakpoint_count + 1); | |
6657 | ||
6658 | b->enable_state = bp_enabled; | |
6659 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6660 | b->number = breakpoint_count; | |
6661 | b->ignore_count = 0; | |
511a6cd4 | 6662 | b->loc->cond = cond; |
f7f9143b JB |
6663 | b->addr_string = addr_string; |
6664 | b->language = language_ada; | |
6665 | b->cond_string = cond_string; | |
6666 | b->exp_string = exp_string; | |
6667 | b->thread = -1; | |
6668 | b->ops = ops; | |
f7f9143b JB |
6669 | |
6670 | mention (b); | |
74960c60 | 6671 | update_global_location_list (); |
f7f9143b JB |
6672 | } |
6673 | ||
6674 | /* Implement the "catch exception" command. */ | |
6675 | ||
6676 | static void | |
6677 | catch_ada_exception_command (char *arg, int tempflag, int from_tty) | |
6678 | { | |
6679 | struct symtab_and_line sal; | |
6680 | enum bptype type; | |
6681 | char *addr_string = NULL; | |
6682 | char *exp_string = NULL; | |
6683 | char *cond_string = NULL; | |
6684 | struct expression *cond = NULL; | |
6685 | struct breakpoint_ops *ops = NULL; | |
6686 | ||
6687 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, | |
6688 | &cond_string, &cond, &ops); | |
6689 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6690 | cond_string, cond, ops, tempflag, | |
6691 | from_tty); | |
6692 | } | |
6693 | ||
6694 | /* Implement the "catch assert" command. */ | |
6695 | ||
6696 | static void | |
6697 | catch_assert_command (char *arg, int tempflag, int from_tty) | |
6698 | { | |
6699 | struct symtab_and_line sal; | |
6700 | char *addr_string = NULL; | |
6701 | struct breakpoint_ops *ops = NULL; | |
6702 | ||
6703 | sal = ada_decode_assert_location (arg, &addr_string, &ops); | |
6704 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6705 | tempflag, from_tty); | |
6706 | } | |
6707 | ||
c906108c | 6708 | static void |
fba45db2 | 6709 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6710 | { |
c5aa993b | 6711 | |
c906108c SS |
6712 | /* The first argument may be an event name, such as "start" or "load". |
6713 | If so, then handle it as such. If it doesn't match an event name, | |
6714 | then attempt to interpret it as an exception name. (This latter is | |
6715 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6716 | |
c906108c | 6717 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6718 | char *arg1_start = arg; |
6719 | char *arg1_end; | |
6720 | int arg1_length; | |
6721 | ||
c906108c SS |
6722 | if (arg1_start == NULL) |
6723 | { | |
c5aa993b | 6724 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6725 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6726 | /* return; */ | |
c5aa993b | 6727 | /* Now, this is not allowed */ |
8a3fe4f8 | 6728 | error (_("Catch requires an event name.")); |
c906108c SS |
6729 | |
6730 | } | |
6731 | arg1_end = ep_find_event_name_end (arg1_start); | |
6732 | if (arg1_end == NULL) | |
8a3fe4f8 | 6733 | error (_("catch requires an event")); |
c906108c | 6734 | arg1_length = arg1_end + 1 - arg1_start; |
c5aa993b | 6735 | |
c906108c SS |
6736 | /* Try to match what we found against known event names. */ |
6737 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6738 | { | |
8a3fe4f8 | 6739 | error (_("Catch of signal not yet implemented")); |
c906108c SS |
6740 | } |
6741 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6742 | { | |
53a5351d JM |
6743 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6744 | tempflag, from_tty); | |
c906108c SS |
6745 | } |
6746 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6747 | { | |
53a5351d JM |
6748 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6749 | tempflag, from_tty); | |
c906108c SS |
6750 | } |
6751 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6752 | { | |
8a3fe4f8 | 6753 | error (_("Catch of thread_start not yet implemented")); |
c906108c SS |
6754 | } |
6755 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6756 | { | |
8a3fe4f8 | 6757 | error (_("Catch of thread_exit not yet implemented")); |
c906108c SS |
6758 | } |
6759 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6760 | { | |
8a3fe4f8 | 6761 | error (_("Catch of thread_join not yet implemented")); |
c906108c SS |
6762 | } |
6763 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6764 | { | |
8a3fe4f8 | 6765 | error (_("Catch of start not yet implemented")); |
c906108c SS |
6766 | } |
6767 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6768 | { | |
8a3fe4f8 | 6769 | error (_("Catch of exit not yet implemented")); |
c906108c SS |
6770 | } |
6771 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6772 | { | |
c5aa993b | 6773 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6774 | } |
6775 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6776 | { | |
c5aa993b | 6777 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6778 | } |
6779 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6780 | { | |
c5aa993b | 6781 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6782 | } |
6783 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6784 | { | |
c5aa993b | 6785 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6786 | } |
6787 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6788 | { | |
c5aa993b | 6789 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6790 | } |
6791 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6792 | { | |
8a3fe4f8 | 6793 | error (_("Catch of stop not yet implemented")); |
c906108c | 6794 | } |
f7f9143b JB |
6795 | else if (strncmp (arg1_start, "exception", arg1_length) == 0) |
6796 | { | |
6797 | catch_ada_exception_command (arg1_end + 1, tempflag, from_tty); | |
6798 | } | |
6799 | ||
6800 | else if (strncmp (arg1_start, "assert", arg1_length) == 0) | |
6801 | { | |
6802 | catch_assert_command (arg1_end + 1, tempflag, from_tty); | |
6803 | } | |
c5aa993b | 6804 | |
c906108c SS |
6805 | /* This doesn't appear to be an event name */ |
6806 | ||
6807 | else | |
6808 | { | |
6809 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6810 | as the name of an exception */ |
c906108c | 6811 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6812 | /* Now this is not allowed */ |
8a3fe4f8 | 6813 | error (_("Unknown event kind specified for catch")); |
c906108c SS |
6814 | |
6815 | } | |
6816 | } | |
6817 | ||
c906108c | 6818 | static void |
fba45db2 | 6819 | catch_command (char *arg, int from_tty) |
c906108c SS |
6820 | { |
6821 | catch_command_1 (arg, 0, from_tty); | |
6822 | } | |
6823 | \f | |
6824 | ||
6825 | static void | |
fba45db2 | 6826 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6827 | { |
6828 | catch_command_1 (arg, 1, from_tty); | |
6829 | } | |
6830 | ||
80f8a6eb | 6831 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6832 | |
6833 | static void | |
fba45db2 | 6834 | clear_command (char *arg, int from_tty) |
c906108c | 6835 | { |
d6e956e5 VP |
6836 | struct breakpoint *b; |
6837 | VEC(breakpoint_p) *found = 0; | |
6838 | int ix; | |
c906108c SS |
6839 | int default_match; |
6840 | struct symtabs_and_lines sals; | |
6841 | struct symtab_and_line sal; | |
c906108c SS |
6842 | int i; |
6843 | ||
6844 | if (arg) | |
6845 | { | |
6846 | sals = decode_line_spec (arg, 1); | |
6847 | default_match = 0; | |
6848 | } | |
6849 | else | |
6850 | { | |
c5aa993b | 6851 | sals.sals = (struct symtab_and_line *) |
c906108c | 6852 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6853 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6854 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6855 | sal.line = default_breakpoint_line; |
6856 | sal.symtab = default_breakpoint_symtab; | |
6857 | sal.pc = default_breakpoint_address; | |
6858 | if (sal.symtab == 0) | |
8a3fe4f8 | 6859 | error (_("No source file specified.")); |
c906108c SS |
6860 | |
6861 | sals.sals[0] = sal; | |
6862 | sals.nelts = 1; | |
6863 | ||
6864 | default_match = 1; | |
6865 | } | |
6866 | ||
ed0616c6 VP |
6867 | /* We don't call resolve_sal_pc here. That's not |
6868 | as bad as it seems, because all existing breakpoints | |
6869 | typically have both file/line and pc set. So, if | |
6870 | clear is given file/line, we can match this to existing | |
6871 | breakpoint without obtaining pc at all. | |
6872 | ||
6873 | We only support clearing given the address explicitly | |
6874 | present in breakpoint table. Say, we've set breakpoint | |
6875 | at file:line. There were several PC values for that file:line, | |
6876 | due to optimization, all in one block. | |
6877 | We've picked one PC value. If "clear" is issued with another | |
6878 | PC corresponding to the same file:line, the breakpoint won't | |
6879 | be cleared. We probably can still clear the breakpoint, but | |
6880 | since the other PC value is never presented to user, user | |
6881 | can only find it by guessing, and it does not seem important | |
6882 | to support that. */ | |
6883 | ||
c906108c | 6884 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
6885 | to it. Do it in two passes, solely to preserve the current |
6886 | behavior that from_tty is forced true if we delete more than | |
6887 | one breakpoint. */ | |
c906108c | 6888 | |
80f8a6eb | 6889 | found = NULL; |
c906108c SS |
6890 | for (i = 0; i < sals.nelts; i++) |
6891 | { | |
6892 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6893 | If line given (pc == 0), clear all bpts on specified line. |
6894 | If defaulting, clear all bpts on default line | |
c906108c | 6895 | or at default pc. |
c5aa993b JM |
6896 | |
6897 | defaulting sal.pc != 0 tests to do | |
6898 | ||
6899 | 0 1 pc | |
6900 | 1 1 pc _and_ line | |
6901 | 0 0 line | |
6902 | 1 0 <can't happen> */ | |
c906108c SS |
6903 | |
6904 | sal = sals.sals[i]; | |
c906108c | 6905 | |
d6e956e5 VP |
6906 | /* Find all matching breakpoints and add them to |
6907 | 'found'. */ | |
6908 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6909 | { |
0d381245 | 6910 | int match = 0; |
80f8a6eb MS |
6911 | /* Are we going to delete b? */ |
6912 | if (b->type != bp_none | |
6913 | && b->type != bp_watchpoint | |
6914 | && b->type != bp_hardware_watchpoint | |
6915 | && b->type != bp_read_watchpoint | |
0d381245 VP |
6916 | && b->type != bp_access_watchpoint) |
6917 | { | |
6918 | struct bp_location *loc = b->loc; | |
6919 | for (; loc; loc = loc->next) | |
6920 | { | |
6921 | int pc_match = sal.pc | |
6922 | && (loc->address == sal.pc) | |
6923 | && (!section_is_overlay (loc->section) | |
6924 | || loc->section == sal.section); | |
6925 | int line_match = ((default_match || (0 == sal.pc)) | |
6926 | && b->source_file != NULL | |
6927 | && sal.symtab != NULL | |
6928 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
6929 | && b->line_number == sal.line); | |
6930 | if (pc_match || line_match) | |
6931 | { | |
6932 | match = 1; | |
6933 | break; | |
6934 | } | |
6935 | } | |
6936 | } | |
6937 | ||
6938 | if (match) | |
d6e956e5 | 6939 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 6940 | } |
80f8a6eb MS |
6941 | } |
6942 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 6943 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
6944 | { |
6945 | if (arg) | |
8a3fe4f8 | 6946 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6947 | else |
8a3fe4f8 | 6948 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6949 | } |
c906108c | 6950 | |
d6e956e5 | 6951 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
6952 | from_tty = 1; /* Always report if deleted more than one */ |
6953 | if (from_tty) | |
a3f17187 | 6954 | { |
d6e956e5 | 6955 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
6956 | printf_unfiltered (_("Deleted breakpoint ")); |
6957 | else | |
6958 | printf_unfiltered (_("Deleted breakpoints ")); | |
6959 | } | |
80f8a6eb | 6960 | breakpoints_changed (); |
d6e956e5 VP |
6961 | |
6962 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 6963 | { |
c5aa993b | 6964 | if (from_tty) |
d6e956e5 VP |
6965 | printf_unfiltered ("%d ", b->number); |
6966 | delete_breakpoint (b); | |
c906108c | 6967 | } |
80f8a6eb MS |
6968 | if (from_tty) |
6969 | putchar_unfiltered ('\n'); | |
c906108c SS |
6970 | } |
6971 | \f | |
6972 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6973 | all breakpoints that are marked for deletion, whether hit or not. | |
6974 | This is called after any breakpoint is hit, or after errors. */ | |
6975 | ||
6976 | void | |
fba45db2 | 6977 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6978 | { |
6979 | struct breakpoint *b, *temp; | |
6980 | ||
6981 | for (; bs; bs = bs->next) | |
4f8d1dc6 | 6982 | if (bs->breakpoint_at && bs->breakpoint_at->owner->disposition == disp_del |
c906108c | 6983 | && bs->stop) |
4f8d1dc6 | 6984 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
6985 | |
6986 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6987 | { |
b5de0fa7 | 6988 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6989 | delete_breakpoint (b); |
6990 | } | |
c906108c SS |
6991 | } |
6992 | ||
0d381245 | 6993 | static void |
74960c60 | 6994 | update_global_location_list (void) |
0d381245 | 6995 | { |
74960c60 VP |
6996 | struct breakpoint *b; |
6997 | struct bp_location **next = &bp_location_chain; | |
6998 | struct bp_location *loc; | |
6999 | struct bp_location *loc2; | |
7000 | struct gdb_exception e; | |
7001 | VEC(bp_location_p) *old_locations = NULL; | |
7002 | int ret; | |
7003 | int ix; | |
7004 | ||
7005 | /* Store old locations for future reference. */ | |
7006 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7007 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7008 | |
74960c60 VP |
7009 | bp_location_chain = NULL; |
7010 | ALL_BREAKPOINTS (b) | |
0d381245 | 7011 | { |
74960c60 | 7012 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7013 | { |
74960c60 VP |
7014 | *next = loc; |
7015 | next = &(loc->global_next); | |
7016 | *next = NULL; | |
0d381245 | 7017 | } |
74960c60 VP |
7018 | } |
7019 | ||
7020 | /* Identify bp_location instances that are no longer present in the new | |
7021 | list, and therefore should be freed. Note that it's not necessary that | |
7022 | those locations should be removed from inferior -- if there's another | |
7023 | location at the same address (previously marked as duplicate), | |
7024 | we don't need to remove/insert the location. */ | |
7025 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7026 | { | |
7027 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7028 | have to free it. */ | |
7029 | int found_object = 0; | |
7030 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7031 | if (loc2 == loc) | |
7032 | { | |
7033 | found_object = 1; | |
7034 | break; | |
7035 | } | |
7036 | ||
7037 | /* If this location is no longer present, and inserted, look if there's | |
7038 | maybe a new location at the same address. If so, mark that one | |
7039 | inserted, and don't remove this one. This is needed so that we | |
7040 | don't have a time window where a breakpoint at certain location is not | |
7041 | inserted. */ | |
7042 | ||
7043 | if (loc->inserted) | |
0d381245 | 7044 | { |
74960c60 VP |
7045 | /* If the location is inserted now, we might have to remove it. */ |
7046 | int keep = 0; | |
7047 | ||
7048 | if (found_object && should_be_inserted (loc)) | |
7049 | { | |
7050 | /* The location is still present in the location list, and still | |
7051 | should be inserted. Don't do anything. */ | |
7052 | keep = 1; | |
7053 | } | |
7054 | else | |
7055 | { | |
7056 | /* The location is either no longer present, or got disabled. | |
7057 | See if there's another location at the same address, in which | |
7058 | case we don't need to remove this one from the target. */ | |
7059 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7060 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7061 | { | |
7062 | /* For the sake of should_insert_location. The | |
7063 | call to check_duplicates will fix up this later. */ | |
7064 | loc2->duplicate = 0; | |
7065 | if (should_be_inserted (loc2) | |
7066 | && loc2 != loc && loc2->address == loc->address) | |
7067 | { | |
7068 | loc2->inserted = 1; | |
7069 | loc2->target_info = loc->target_info; | |
7070 | keep = 1; | |
7071 | break; | |
7072 | } | |
7073 | } | |
7074 | } | |
7075 | ||
7076 | if (!keep) | |
7077 | if (remove_breakpoint (loc, mark_uninserted)) | |
7078 | { | |
7079 | /* This is just about all we can do. We could keep this | |
7080 | location on the global list, and try to remove it next | |
7081 | time, but there's no particular reason why we will | |
7082 | succeed next time. | |
7083 | ||
7084 | Note that at this point, loc->owner is still valid, | |
7085 | as delete_breakpoint frees the breakpoint only | |
7086 | after calling us. */ | |
7087 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7088 | loc->owner->number); | |
7089 | } | |
0d381245 | 7090 | } |
74960c60 VP |
7091 | |
7092 | if (!found_object) | |
7093 | free_bp_location (loc); | |
7094 | } | |
7095 | ||
7096 | ALL_BREAKPOINTS (b) | |
7097 | { | |
7098 | check_duplicates (b); | |
0d381245 | 7099 | } |
74960c60 VP |
7100 | |
7101 | if (always_inserted_mode && target_has_execution) | |
7102 | insert_breakpoint_locations (); | |
7103 | } | |
7104 | ||
7105 | static void | |
7106 | update_global_location_list_nothrow (void) | |
7107 | { | |
7108 | struct gdb_exception e; | |
7109 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7110 | update_global_location_list (); | |
0d381245 VP |
7111 | } |
7112 | ||
53a5351d JM |
7113 | /* Delete a breakpoint and clean up all traces of it in the data |
7114 | structures. */ | |
c906108c SS |
7115 | |
7116 | void | |
fba45db2 | 7117 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7118 | { |
52f0bd74 AC |
7119 | struct breakpoint *b; |
7120 | bpstat bs; | |
74960c60 | 7121 | struct bp_location *loc, *next; |
c906108c | 7122 | |
8a3fe4f8 | 7123 | gdb_assert (bpt != NULL); |
c906108c SS |
7124 | |
7125 | /* Has this bp already been deleted? This can happen because multiple | |
7126 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7127 | ||
7128 | One example of this happening is a watchpoint's scope bp. When the | |
7129 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7130 | delete it. We also delete its scope bp. But the scope bp is marked | |
7131 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7132 | checked for auto-deleting bp's, which are deleted. | |
7133 | ||
7134 | A real solution to this problem might involve reference counts in bp's, | |
7135 | and/or giving them pointers back to their referencing bpstat's, and | |
7136 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7137 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7138 | if (bpt->type == bp_none) |
7139 | return; | |
7140 | ||
9a4105ab AC |
7141 | if (deprecated_delete_breakpoint_hook) |
7142 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 7143 | breakpoint_delete_event (bpt->number); |
c906108c | 7144 | |
c906108c SS |
7145 | if (breakpoint_chain == bpt) |
7146 | breakpoint_chain = bpt->next; | |
7147 | ||
c906108c SS |
7148 | ALL_BREAKPOINTS (b) |
7149 | if (b->next == bpt) | |
c5aa993b JM |
7150 | { |
7151 | b->next = bpt->next; | |
7152 | break; | |
7153 | } | |
c906108c | 7154 | |
c906108c | 7155 | free_command_lines (&bpt->commands); |
c906108c | 7156 | if (bpt->cond_string != NULL) |
b8c9b27d | 7157 | xfree (bpt->cond_string); |
c906108c | 7158 | if (bpt->addr_string != NULL) |
b8c9b27d | 7159 | xfree (bpt->addr_string); |
c906108c | 7160 | if (bpt->exp != NULL) |
b8c9b27d | 7161 | xfree (bpt->exp); |
c906108c | 7162 | if (bpt->exp_string != NULL) |
b8c9b27d | 7163 | xfree (bpt->exp_string); |
c906108c SS |
7164 | if (bpt->val != NULL) |
7165 | value_free (bpt->val); | |
7166 | if (bpt->source_file != NULL) | |
b8c9b27d | 7167 | xfree (bpt->source_file); |
c906108c | 7168 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7169 | xfree (bpt->dll_pathname); |
c906108c | 7170 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7171 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7172 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7173 | xfree (bpt->exec_pathname); |
c906108c SS |
7174 | |
7175 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7176 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7177 | We just check stop_bpstat for now. Note that we cannot just |
7178 | remove bpstats pointing at bpt from the stop_bpstat list | |
7179 | entirely, as breakpoint commands are associated with the bpstat; | |
7180 | if we remove it here, then the later call to | |
7181 | bpstat_do_actions (&stop_bpstat); | |
7182 | in event-top.c won't do anything, and temporary breakpoints | |
7183 | with commands won't work. */ | |
c906108c | 7184 | for (bs = stop_bpstat; bs; bs = bs->next) |
4f8d1dc6 | 7185 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) |
c906108c SS |
7186 | { |
7187 | bs->breakpoint_at = NULL; | |
c906108c | 7188 | bs->old_val = NULL; |
c2b8ed2c | 7189 | /* bs->commands will be freed later. */ |
c906108c | 7190 | } |
74960c60 VP |
7191 | |
7192 | /* Now that breakpoint is removed from breakpoint | |
7193 | list, update the global location list. This | |
7194 | will remove locations that used to belong to | |
7195 | this breakpoint. Do this before freeing | |
7196 | the breakpoint itself, since remove_breakpoint | |
7197 | looks at location's owner. It might be better | |
7198 | design to have location completely self-contained, | |
7199 | but it's not the case now. */ | |
7200 | update_global_location_list (); | |
7201 | ||
7202 | ||
c906108c SS |
7203 | /* On the chance that someone will soon try again to delete this same |
7204 | bp, we mark it as deleted before freeing its storage. */ | |
7205 | bpt->type = bp_none; | |
7206 | ||
b8c9b27d | 7207 | xfree (bpt); |
c906108c SS |
7208 | } |
7209 | ||
4d6140d9 AC |
7210 | static void |
7211 | do_delete_breakpoint_cleanup (void *b) | |
7212 | { | |
7213 | delete_breakpoint (b); | |
7214 | } | |
7215 | ||
7216 | struct cleanup * | |
7217 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7218 | { | |
7219 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7220 | } | |
7221 | ||
c906108c | 7222 | void |
fba45db2 | 7223 | delete_command (char *arg, int from_tty) |
c906108c SS |
7224 | { |
7225 | struct breakpoint *b, *temp; | |
7226 | ||
ea9365bb TT |
7227 | dont_repeat (); |
7228 | ||
c906108c SS |
7229 | if (arg == 0) |
7230 | { | |
7231 | int breaks_to_delete = 0; | |
7232 | ||
7233 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7234 | Do not delete internal or call-dummy breakpoints, these |
7235 | have to be deleted with an explicit breakpoint number argument. */ | |
7236 | ALL_BREAKPOINTS (b) | |
7237 | { | |
7238 | if (b->type != bp_call_dummy && | |
7239 | b->type != bp_shlib_event && | |
c4093a6a | 7240 | b->type != bp_thread_event && |
1900040c | 7241 | b->type != bp_overlay_event && |
c5aa993b | 7242 | b->number >= 0) |
973d738b DJ |
7243 | { |
7244 | breaks_to_delete = 1; | |
7245 | break; | |
7246 | } | |
c5aa993b | 7247 | } |
c906108c SS |
7248 | |
7249 | /* Ask user only if there are some breakpoints to delete. */ | |
7250 | if (!from_tty | |
e2e0b3e5 | 7251 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7252 | { |
c5aa993b JM |
7253 | ALL_BREAKPOINTS_SAFE (b, temp) |
7254 | { | |
7255 | if (b->type != bp_call_dummy && | |
7256 | b->type != bp_shlib_event && | |
c4093a6a | 7257 | b->type != bp_thread_event && |
1900040c | 7258 | b->type != bp_overlay_event && |
c5aa993b JM |
7259 | b->number >= 0) |
7260 | delete_breakpoint (b); | |
7261 | } | |
c906108c SS |
7262 | } |
7263 | } | |
7264 | else | |
7265 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7266 | } | |
7267 | ||
0d381245 VP |
7268 | static int |
7269 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7270 | { |
0d381245 VP |
7271 | for (; loc; loc = loc->next) |
7272 | if (!loc->shlib_disabled) | |
7273 | return 0; | |
7274 | return 1; | |
fe3f5fa8 VP |
7275 | } |
7276 | ||
776592bf DE |
7277 | /* Subroutine of update_breakpoint_locations to simplify it. |
7278 | Return non-zero if multiple fns in list LOC have the same name. | |
7279 | Null names are ignored. */ | |
7280 | ||
7281 | static int | |
7282 | ambiguous_names_p (struct bp_location *loc) | |
7283 | { | |
7284 | struct bp_location *l; | |
7285 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7286 | (int (*) (const void *, const void *)) streq, | |
7287 | NULL, xcalloc, xfree); | |
7288 | ||
7289 | for (l = loc; l != NULL; l = l->next) | |
7290 | { | |
7291 | const char **slot; | |
7292 | const char *name = l->function_name; | |
7293 | ||
7294 | /* Allow for some names to be NULL, ignore them. */ | |
7295 | if (name == NULL) | |
7296 | continue; | |
7297 | ||
7298 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7299 | INSERT); | |
7300 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7301 | NULL. */ | |
7302 | if (*slot != NULL) | |
7303 | { | |
7304 | htab_delete (htab); | |
7305 | return 1; | |
7306 | } | |
7307 | *slot = name; | |
7308 | } | |
7309 | ||
7310 | htab_delete (htab); | |
7311 | return 0; | |
7312 | } | |
7313 | ||
fe3f5fa8 | 7314 | static void |
0d381245 VP |
7315 | update_breakpoint_locations (struct breakpoint *b, |
7316 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7317 | { |
7318 | int i; | |
7319 | char *s; | |
0d381245 VP |
7320 | struct bp_location *existing_locations = b->loc; |
7321 | ||
7322 | /* If there's no new locations, and all existing locations | |
7323 | are pending, don't do anything. This optimizes | |
7324 | the common case where all locations are in the same | |
7325 | shared library, that was unloaded. We'd like to | |
7326 | retain the location, so that when the library | |
7327 | is loaded again, we don't loose the enabled/disabled | |
7328 | status of the individual locations. */ | |
7329 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7330 | return; |
7331 | ||
fe3f5fa8 VP |
7332 | b->loc = NULL; |
7333 | ||
0d381245 | 7334 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7335 | { |
0d381245 VP |
7336 | struct bp_location *new_loc = |
7337 | add_location_to_breakpoint (b, b->type, &(sals.sals[i])); | |
fe3f5fa8 | 7338 | |
0d381245 VP |
7339 | /* Reparse conditions, they might contain references to the |
7340 | old symtab. */ | |
7341 | if (b->cond_string != NULL) | |
7342 | { | |
7343 | struct gdb_exception e; | |
fe3f5fa8 | 7344 | |
0d381245 VP |
7345 | s = b->cond_string; |
7346 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7347 | { | |
7348 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7349 | 0); | |
7350 | } | |
7351 | if (e.reason < 0) | |
7352 | { | |
7353 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7354 | b->number, e.message); | |
7355 | new_loc->enabled = 0; | |
7356 | } | |
7357 | } | |
fe3f5fa8 | 7358 | |
0d381245 VP |
7359 | if (b->source_file != NULL) |
7360 | xfree (b->source_file); | |
7361 | if (sals.sals[i].symtab == NULL) | |
7362 | b->source_file = NULL; | |
7363 | else | |
7364 | b->source_file = | |
7365 | savestring (sals.sals[i].symtab->filename, | |
7366 | strlen (sals.sals[i].symtab->filename)); | |
fe3f5fa8 | 7367 | |
0d381245 VP |
7368 | if (b->line_number == 0) |
7369 | b->line_number = sals.sals[i].line; | |
7370 | } | |
fe3f5fa8 | 7371 | |
0d381245 VP |
7372 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7373 | { | |
7374 | struct bp_location *e = existing_locations; | |
776592bf DE |
7375 | /* If there are multiple breakpoints with the same function name, |
7376 | e.g. for inline functions, comparing function names won't work. | |
7377 | Instead compare pc addresses; this is just a heuristic as things | |
7378 | may have moved, but in practice it gives the correct answer | |
7379 | often enough until a better solution is found. */ | |
7380 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7381 | ||
0d381245 VP |
7382 | for (; e; e = e->next) |
7383 | { | |
7384 | if (!e->enabled && e->function_name) | |
7385 | { | |
7386 | struct bp_location *l = b->loc; | |
776592bf DE |
7387 | if (have_ambiguous_names) |
7388 | { | |
7389 | for (; l; l = l->next) | |
7390 | if (e->address == l->address) | |
7391 | { | |
7392 | l->enabled = 0; | |
7393 | break; | |
7394 | } | |
7395 | } | |
7396 | else | |
7397 | { | |
7398 | for (; l; l = l->next) | |
7399 | if (l->function_name | |
7400 | && strcmp (e->function_name, l->function_name) == 0) | |
7401 | { | |
7402 | l->enabled = 0; | |
7403 | break; | |
7404 | } | |
7405 | } | |
0d381245 VP |
7406 | } |
7407 | } | |
7408 | } | |
fe3f5fa8 | 7409 | |
74960c60 | 7410 | update_global_location_list (); |
fe3f5fa8 VP |
7411 | } |
7412 | ||
7413 | ||
c906108c SS |
7414 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7415 | The value we return ends up being the return value from catch_errors. | |
7416 | Unused in this case. */ | |
7417 | ||
7418 | static int | |
4efb68b1 | 7419 | breakpoint_re_set_one (void *bint) |
c906108c | 7420 | { |
53a5351d JM |
7421 | /* get past catch_errs */ |
7422 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7423 | struct value *mark; |
7424 | int i; | |
fe3f5fa8 VP |
7425 | int not_found = 0; |
7426 | int *not_found_ptr = ¬_found; | |
7427 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7428 | struct symtabs_and_lines expanded; |
c906108c | 7429 | char *s; |
b5de0fa7 | 7430 | enum enable_state save_enable; |
fe3f5fa8 VP |
7431 | struct gdb_exception e; |
7432 | ||
c906108c SS |
7433 | |
7434 | switch (b->type) | |
7435 | { | |
7436 | case bp_none: | |
8a3fe4f8 | 7437 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7438 | b->number); |
c906108c SS |
7439 | return 0; |
7440 | case bp_breakpoint: | |
7441 | case bp_hardware_breakpoint: | |
7442 | case bp_catch_load: | |
7443 | case bp_catch_unload: | |
7444 | if (b->addr_string == NULL) | |
7445 | { | |
7446 | /* Anything without a string can't be re-set. */ | |
7447 | delete_breakpoint (b); | |
7448 | return 0; | |
7449 | } | |
c906108c SS |
7450 | |
7451 | set_language (b->language); | |
7452 | input_radix = b->input_radix; | |
7453 | s = b->addr_string; | |
fe3f5fa8 | 7454 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7455 | { |
fe3f5fa8 VP |
7456 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7457 | not_found_ptr); | |
7458 | } | |
7459 | if (e.reason < 0) | |
7460 | { | |
7461 | int not_found_and_ok = 0; | |
7462 | /* For pending breakpoints, it's expected that parsing | |
7463 | will fail until the right shared library is loaded. | |
7464 | User has already told to create pending breakpoints and | |
7465 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7466 | state, then user already saw the message about that breakpoint | |
7467 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7468 | if (not_found |
7469 | && (b->condition_not_parsed | |
7470 | || (b->loc && b->loc->shlib_disabled) | |
7471 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7472 | not_found_and_ok = 1; |
7473 | ||
7474 | if (!not_found_and_ok) | |
c906108c | 7475 | { |
fe3f5fa8 VP |
7476 | /* We surely don't want to warn about the same breakpoint |
7477 | 10 times. One solution, implemented here, is disable | |
7478 | the breakpoint on error. Another solution would be to | |
7479 | have separate 'warning emitted' flag. Since this | |
7480 | happens only when a binary has changed, I don't know | |
7481 | which approach is better. */ | |
7482 | b->enable_state = bp_disabled; | |
7483 | throw_exception (e); | |
c906108c | 7484 | } |
fe3f5fa8 | 7485 | } |
c906108c | 7486 | |
fe3f5fa8 VP |
7487 | if (not_found) |
7488 | break; | |
7489 | ||
7490 | gdb_assert (sals.nelts == 1); | |
7491 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7492 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7493 | { |
7494 | char *cond_string = 0; | |
7495 | int thread = -1; | |
7496 | find_condition_and_thread (s, sals.sals[0].pc, | |
7497 | &cond_string, &thread); | |
7498 | if (cond_string) | |
7499 | b->cond_string = cond_string; | |
7500 | b->thread = thread; | |
0d381245 | 7501 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7502 | } |
ed0616c6 VP |
7503 | expanded = expand_line_sal_maybe (sals.sals[0]); |
7504 | update_breakpoint_locations (b, expanded); | |
0d381245 | 7505 | |
b8c9b27d | 7506 | xfree (sals.sals); |
c906108c SS |
7507 | break; |
7508 | ||
7509 | case bp_watchpoint: | |
7510 | case bp_hardware_watchpoint: | |
7511 | case bp_read_watchpoint: | |
7512 | case bp_access_watchpoint: | |
0b3de036 VP |
7513 | /* Watchpoint can be either on expression using entirely global variables, |
7514 | or it can be on local variables. | |
7515 | ||
7516 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7517 | across program restarts. Since they can use variables from shared | |
7518 | libraries, we need to reparse expression as libraries are loaded | |
7519 | and unloaded. | |
7520 | ||
7521 | Watchpoints on local variables can also change meaning as result | |
7522 | of solib event. For example, if a watchpoint uses both a local and | |
7523 | a global variables in expression, it's a local watchpoint, but | |
7524 | unloading of a shared library will make the expression invalid. | |
7525 | This is not a very common use case, but we still re-evaluate | |
7526 | expression, to avoid surprises to the user. | |
7527 | ||
7528 | Note that for local watchpoints, we re-evaluate it only if | |
7529 | watchpoints frame id is still valid. If it's not, it means | |
7530 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7531 | I'm not sure we'll ever be called in this case. | |
7532 | ||
7533 | If a local watchpoint's frame id is still valid, then | |
7534 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7535 | ||
7536 | Don't do anything about disabled watchpoints, since they will | |
7537 | be reevaluated again when enabled. */ | |
a5606eee | 7538 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7539 | break; |
c5aa993b JM |
7540 | /* We needn't really do anything to reset these, since the mask |
7541 | that requests them is unaffected by e.g., new libraries being | |
7542 | loaded. */ | |
c906108c SS |
7543 | case bp_catch_fork: |
7544 | case bp_catch_vfork: | |
7545 | case bp_catch_exec: | |
7546 | break; | |
c5aa993b | 7547 | |
c906108c | 7548 | default: |
a3f17187 | 7549 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7550 | /* fall through */ |
1900040c MS |
7551 | /* Delete longjmp and overlay event breakpoints; they will be |
7552 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7553 | case bp_longjmp: |
7554 | case bp_longjmp_resume: | |
1900040c | 7555 | case bp_overlay_event: |
c906108c SS |
7556 | delete_breakpoint (b); |
7557 | break; | |
7558 | ||
c5aa993b JM |
7559 | /* This breakpoint is special, it's set up when the inferior |
7560 | starts and we really don't want to touch it. */ | |
c906108c SS |
7561 | case bp_shlib_event: |
7562 | ||
c4093a6a JM |
7563 | /* Like bp_shlib_event, this breakpoint type is special. |
7564 | Once it is set up, we do not want to touch it. */ | |
7565 | case bp_thread_event: | |
7566 | ||
c5aa993b JM |
7567 | /* Keep temporary breakpoints, which can be encountered when we step |
7568 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7569 | Otherwise these should have been blown away via the cleanup chain | |
7570 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7571 | case bp_until: |
7572 | case bp_finish: | |
7573 | case bp_watchpoint_scope: | |
7574 | case bp_call_dummy: | |
7575 | case bp_step_resume: | |
7576 | break; | |
7577 | } | |
7578 | ||
7579 | return 0; | |
7580 | } | |
7581 | ||
7582 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7583 | void | |
fba45db2 | 7584 | breakpoint_re_set (void) |
c906108c SS |
7585 | { |
7586 | struct breakpoint *b, *temp; | |
7587 | enum language save_language; | |
7588 | int save_input_radix; | |
c5aa993b | 7589 | |
c906108c SS |
7590 | save_language = current_language->la_language; |
7591 | save_input_radix = input_radix; | |
7592 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7593 | { |
53a5351d | 7594 | /* Format possible error msg */ |
fe3f5fa8 | 7595 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7596 | b->number); |
7597 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7598 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7599 | do_cleanups (cleanups); |
c5aa993b | 7600 | } |
c906108c SS |
7601 | set_language (save_language); |
7602 | input_radix = save_input_radix; | |
7603 | ||
91104499 | 7604 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
9df628e0 RE |
7605 | { |
7606 | create_longjmp_breakpoint ("longjmp"); | |
7607 | create_longjmp_breakpoint ("_longjmp"); | |
7608 | create_longjmp_breakpoint ("siglongjmp"); | |
7609 | create_longjmp_breakpoint ("_siglongjmp"); | |
7610 | create_longjmp_breakpoint (NULL); | |
7611 | } | |
1900040c MS |
7612 | |
7613 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7614 | } |
7615 | \f | |
c906108c SS |
7616 | /* Reset the thread number of this breakpoint: |
7617 | ||
7618 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7619 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7620 | void |
fba45db2 | 7621 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7622 | { |
7623 | if (b->thread != -1) | |
7624 | { | |
39f77062 KB |
7625 | if (in_thread_list (inferior_ptid)) |
7626 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7627 | } |
7628 | } | |
7629 | ||
03ac34d5 MS |
7630 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7631 | If from_tty is nonzero, it prints a message to that effect, | |
7632 | which ends with a period (no newline). */ | |
7633 | ||
c906108c | 7634 | void |
fba45db2 | 7635 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7636 | { |
52f0bd74 | 7637 | struct breakpoint *b; |
c906108c SS |
7638 | |
7639 | if (count < 0) | |
7640 | count = 0; | |
7641 | ||
7642 | ALL_BREAKPOINTS (b) | |
7643 | if (b->number == bptnum) | |
c5aa993b JM |
7644 | { |
7645 | b->ignore_count = count; | |
221ea385 KS |
7646 | if (from_tty) |
7647 | { | |
7648 | if (count == 0) | |
a3f17187 | 7649 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7650 | bptnum); |
7651 | else if (count == 1) | |
a3f17187 | 7652 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7653 | bptnum); |
7654 | else | |
a3f17187 | 7655 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7656 | count, bptnum); |
7657 | } | |
c5aa993b | 7658 | breakpoints_changed (); |
221ea385 | 7659 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7660 | return; |
7661 | } | |
c906108c | 7662 | |
8a3fe4f8 | 7663 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7664 | } |
7665 | ||
7666 | /* Clear the ignore counts of all breakpoints. */ | |
7667 | void | |
fba45db2 | 7668 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7669 | { |
7670 | struct breakpoint *b; | |
7671 | ||
7672 | ALL_BREAKPOINTS (b) | |
7673 | b->ignore_count = 0; | |
7674 | } | |
7675 | ||
7676 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7677 | ||
7678 | static void | |
fba45db2 | 7679 | ignore_command (char *args, int from_tty) |
c906108c SS |
7680 | { |
7681 | char *p = args; | |
52f0bd74 | 7682 | int num; |
c906108c SS |
7683 | |
7684 | if (p == 0) | |
e2e0b3e5 | 7685 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7686 | |
c906108c | 7687 | num = get_number (&p); |
5c44784c | 7688 | if (num == 0) |
8a3fe4f8 | 7689 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7690 | if (*p == 0) |
8a3fe4f8 | 7691 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7692 | |
7693 | set_ignore_count (num, | |
7694 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7695 | from_tty); | |
221ea385 KS |
7696 | if (from_tty) |
7697 | printf_filtered ("\n"); | |
c906108c SS |
7698 | } |
7699 | \f | |
7700 | /* Call FUNCTION on each of the breakpoints | |
7701 | whose numbers are given in ARGS. */ | |
7702 | ||
7703 | static void | |
831662b3 | 7704 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7705 | { |
52f0bd74 | 7706 | char *p = args; |
c906108c | 7707 | char *p1; |
52f0bd74 AC |
7708 | int num; |
7709 | struct breakpoint *b, *tmp; | |
11cf8741 | 7710 | int match; |
c906108c SS |
7711 | |
7712 | if (p == 0) | |
e2e0b3e5 | 7713 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7714 | |
7715 | while (*p) | |
7716 | { | |
11cf8741 | 7717 | match = 0; |
c906108c | 7718 | p1 = p; |
c5aa993b | 7719 | |
5c44784c JM |
7720 | num = get_number_or_range (&p1); |
7721 | if (num == 0) | |
c5aa993b | 7722 | { |
8a3fe4f8 | 7723 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7724 | } |
7725 | else | |
7726 | { | |
7727 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7728 | if (b->number == num) | |
7729 | { | |
7730 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7731 | match = 1; |
5c44784c JM |
7732 | function (b); |
7733 | if (related_breakpoint) | |
7734 | function (related_breakpoint); | |
11cf8741 | 7735 | break; |
5c44784c | 7736 | } |
11cf8741 | 7737 | if (match == 0) |
a3f17187 | 7738 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7739 | } |
c906108c SS |
7740 | p = p1; |
7741 | } | |
7742 | } | |
7743 | ||
0d381245 VP |
7744 | static struct bp_location * |
7745 | find_location_by_number (char *number) | |
7746 | { | |
7747 | char *dot = strchr (number, '.'); | |
7748 | char *p1; | |
7749 | int bp_num; | |
7750 | int loc_num; | |
7751 | struct breakpoint *b; | |
7752 | struct bp_location *loc; | |
7753 | ||
7754 | *dot = '\0'; | |
7755 | ||
7756 | p1 = number; | |
7757 | bp_num = get_number_or_range (&p1); | |
7758 | if (bp_num == 0) | |
7759 | error (_("Bad breakpoint number '%s'"), number); | |
7760 | ||
7761 | ALL_BREAKPOINTS (b) | |
7762 | if (b->number == bp_num) | |
7763 | { | |
7764 | break; | |
7765 | } | |
7766 | ||
7767 | if (!b || b->number != bp_num) | |
7768 | error (_("Bad breakpoint number '%s'"), number); | |
7769 | ||
7770 | p1 = dot+1; | |
7771 | loc_num = get_number_or_range (&p1); | |
7772 | if (loc_num == 0) | |
7773 | error (_("Bad breakpoint location number '%s'"), number); | |
7774 | ||
7775 | --loc_num; | |
7776 | loc = b->loc; | |
7777 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7778 | ; | |
7779 | if (!loc) | |
7780 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7781 | ||
7782 | return loc; | |
7783 | } | |
7784 | ||
7785 | ||
1900040c MS |
7786 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7787 | If from_tty is nonzero, it prints a message to that effect, | |
7788 | which ends with a period (no newline). */ | |
7789 | ||
c906108c | 7790 | void |
fba45db2 | 7791 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7792 | { |
7793 | /* Never disable a watchpoint scope breakpoint; we want to | |
7794 | hit them when we leave scope so we can delete both the | |
7795 | watchpoint and its scope breakpoint at that time. */ | |
7796 | if (bpt->type == bp_watchpoint_scope) | |
7797 | return; | |
7798 | ||
c2c6d25f | 7799 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7800 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7801 | return; |
7802 | ||
b5de0fa7 | 7803 | bpt->enable_state = bp_disabled; |
c906108c | 7804 | |
74960c60 | 7805 | update_global_location_list (); |
c906108c | 7806 | |
9a4105ab AC |
7807 | if (deprecated_modify_breakpoint_hook) |
7808 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7809 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7810 | } |
7811 | ||
c906108c | 7812 | static void |
fba45db2 | 7813 | disable_command (char *args, int from_tty) |
c906108c | 7814 | { |
52f0bd74 | 7815 | struct breakpoint *bpt; |
c906108c SS |
7816 | if (args == 0) |
7817 | ALL_BREAKPOINTS (bpt) | |
7818 | switch (bpt->type) | |
c5aa993b JM |
7819 | { |
7820 | case bp_none: | |
8a3fe4f8 | 7821 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7822 | bpt->number); |
c5aa993b JM |
7823 | continue; |
7824 | case bp_breakpoint: | |
7825 | case bp_catch_load: | |
7826 | case bp_catch_unload: | |
7827 | case bp_catch_fork: | |
7828 | case bp_catch_vfork: | |
7829 | case bp_catch_exec: | |
c5aa993b JM |
7830 | case bp_hardware_breakpoint: |
7831 | case bp_watchpoint: | |
7832 | case bp_hardware_watchpoint: | |
7833 | case bp_read_watchpoint: | |
7834 | case bp_access_watchpoint: | |
7835 | disable_breakpoint (bpt); | |
7836 | default: | |
7837 | continue; | |
7838 | } | |
0d381245 VP |
7839 | else if (strchr (args, '.')) |
7840 | { | |
7841 | struct bp_location *loc = find_location_by_number (args); | |
7842 | if (loc) | |
7843 | loc->enabled = 0; | |
74960c60 | 7844 | update_global_location_list (); |
0d381245 | 7845 | } |
c906108c SS |
7846 | else |
7847 | map_breakpoint_numbers (args, disable_breakpoint); | |
7848 | } | |
7849 | ||
7850 | static void | |
fba45db2 | 7851 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7852 | { |
c906108c SS |
7853 | int target_resources_ok, other_type_used; |
7854 | struct value *mark; | |
7855 | ||
7856 | if (bpt->type == bp_hardware_breakpoint) | |
7857 | { | |
7858 | int i; | |
c5aa993b | 7859 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7860 | target_resources_ok = |
7861 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7862 | i + 1, 0); | |
c906108c | 7863 | if (target_resources_ok == 0) |
8a3fe4f8 | 7864 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7865 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7866 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7867 | } |
7868 | ||
fe3f5fa8 VP |
7869 | if (bpt->type == bp_watchpoint || |
7870 | bpt->type == bp_hardware_watchpoint || | |
7871 | bpt->type == bp_read_watchpoint || | |
7872 | bpt->type == bp_access_watchpoint) | |
c906108c | 7873 | { |
fe3f5fa8 VP |
7874 | struct frame_id saved_frame_id; |
7875 | ||
7876 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
7877 | if (bpt->exp_valid_block != NULL) | |
c906108c | 7878 | { |
fe3f5fa8 VP |
7879 | struct frame_info *fr = |
7880 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7881 | if (fr == NULL) | |
c906108c | 7882 | { |
fe3f5fa8 VP |
7883 | printf_filtered (_("\ |
7884 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7885 | is valid is not currently in scope.\n"), bpt->number); | |
c906108c SS |
7886 | return; |
7887 | } | |
fe3f5fa8 | 7888 | select_frame (fr); |
c906108c | 7889 | } |
0101ce28 | 7890 | |
b4c291bb KH |
7891 | if (bpt->val) |
7892 | value_free (bpt->val); | |
fe3f5fa8 | 7893 | mark = value_mark (); |
fa4727a6 DJ |
7894 | fetch_watchpoint_value (bpt->exp, &bpt->val, NULL, NULL); |
7895 | if (bpt->val) | |
7896 | release_value (bpt->val); | |
7897 | bpt->val_valid = 1; | |
7898 | ||
fe3f5fa8 VP |
7899 | if (bpt->type == bp_hardware_watchpoint || |
7900 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7901 | bpt->type == bp_access_watchpoint) |
7902 | { | |
fe3f5fa8 VP |
7903 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7904 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
0101ce28 | 7905 | |
fe3f5fa8 VP |
7906 | /* Hack around 'unused var' error for some targets here */ |
7907 | (void) mem_cnt, (void) i; | |
7908 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7909 | bpt->type, i + mem_cnt, other_type_used); | |
7910 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7911 | bp_watchpoint in the following condition */ | |
7912 | if (target_resources_ok < 0) | |
c5aa993b | 7913 | { |
fe3f5fa8 | 7914 | printf_filtered (_("\ |
c906108c | 7915 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 7916 | have been allocated for other watchpoints.\n"), bpt->number); |
fe3f5fa8 VP |
7917 | value_free_to_mark (mark); |
7918 | return; | |
c5aa993b JM |
7919 | } |
7920 | } | |
fe3f5fa8 VP |
7921 | |
7922 | select_frame (frame_find_by_id (saved_frame_id)); | |
7923 | value_free_to_mark (mark); | |
c906108c | 7924 | } |
0101ce28 | 7925 | |
b4c291bb KH |
7926 | if (bpt->enable_state != bp_permanent) |
7927 | bpt->enable_state = bp_enabled; | |
7928 | bpt->disposition = disposition; | |
74960c60 | 7929 | update_global_location_list (); |
b4c291bb KH |
7930 | breakpoints_changed (); |
7931 | ||
9a4105ab AC |
7932 | if (deprecated_modify_breakpoint_hook) |
7933 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7934 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7935 | } |
7936 | ||
fe3f5fa8 | 7937 | |
c906108c | 7938 | void |
fba45db2 | 7939 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7940 | { |
7941 | do_enable_breakpoint (bpt, bpt->disposition); | |
7942 | } | |
7943 | ||
7944 | /* The enable command enables the specified breakpoints (or all defined | |
7945 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7946 | in stopping the inferior. */ |
c906108c | 7947 | |
c906108c | 7948 | static void |
fba45db2 | 7949 | enable_command (char *args, int from_tty) |
c906108c | 7950 | { |
52f0bd74 | 7951 | struct breakpoint *bpt; |
c906108c SS |
7952 | if (args == 0) |
7953 | ALL_BREAKPOINTS (bpt) | |
7954 | switch (bpt->type) | |
c5aa993b JM |
7955 | { |
7956 | case bp_none: | |
8a3fe4f8 | 7957 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 7958 | bpt->number); |
c5aa993b JM |
7959 | continue; |
7960 | case bp_breakpoint: | |
7961 | case bp_catch_load: | |
7962 | case bp_catch_unload: | |
7963 | case bp_catch_fork: | |
7964 | case bp_catch_vfork: | |
7965 | case bp_catch_exec: | |
c5aa993b JM |
7966 | case bp_hardware_breakpoint: |
7967 | case bp_watchpoint: | |
7968 | case bp_hardware_watchpoint: | |
7969 | case bp_read_watchpoint: | |
7970 | case bp_access_watchpoint: | |
7971 | enable_breakpoint (bpt); | |
7972 | default: | |
7973 | continue; | |
7974 | } | |
0d381245 VP |
7975 | else if (strchr (args, '.')) |
7976 | { | |
7977 | struct bp_location *loc = find_location_by_number (args); | |
7978 | if (loc) | |
7979 | loc->enabled = 1; | |
74960c60 | 7980 | update_global_location_list (); |
0d381245 | 7981 | } |
c906108c SS |
7982 | else |
7983 | map_breakpoint_numbers (args, enable_breakpoint); | |
7984 | } | |
7985 | ||
7986 | static void | |
fba45db2 | 7987 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7988 | { |
b5de0fa7 | 7989 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7990 | } |
7991 | ||
c906108c | 7992 | static void |
fba45db2 | 7993 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7994 | { |
7995 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7996 | } | |
7997 | ||
7998 | static void | |
fba45db2 | 7999 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8000 | { |
b5de0fa7 | 8001 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8002 | } |
8003 | ||
c906108c | 8004 | static void |
fba45db2 | 8005 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8006 | { |
8007 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8008 | } | |
8009 | \f | |
fa8d40ab JJ |
8010 | static void |
8011 | set_breakpoint_cmd (char *args, int from_tty) | |
8012 | { | |
8013 | } | |
8014 | ||
8015 | static void | |
8016 | show_breakpoint_cmd (char *args, int from_tty) | |
8017 | { | |
8018 | } | |
8019 | ||
c906108c SS |
8020 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8021 | ||
8022 | struct symtabs_and_lines | |
fba45db2 | 8023 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8024 | { |
8025 | struct symtabs_and_lines sals; | |
8026 | if (string == 0) | |
8a3fe4f8 | 8027 | error (_("Empty line specification.")); |
c906108c SS |
8028 | if (default_breakpoint_valid) |
8029 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8030 | default_breakpoint_symtab, |
8031 | default_breakpoint_line, | |
68219205 | 8032 | (char ***) NULL, NULL); |
c906108c SS |
8033 | else |
8034 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8035 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8036 | if (*string) |
8a3fe4f8 | 8037 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8038 | return sals; |
8039 | } | |
8181d85f DJ |
8040 | |
8041 | /* Create and insert a raw software breakpoint at PC. Return an | |
8042 | identifier, which should be used to remove the breakpoint later. | |
8043 | In general, places which call this should be using something on the | |
8044 | breakpoint chain instead; this function should be eliminated | |
8045 | someday. */ | |
8046 | ||
8047 | void * | |
8048 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8049 | { | |
8050 | struct bp_target_info *bp_tgt; | |
8051 | ||
8052 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8053 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8054 | ||
8055 | bp_tgt->placed_address = pc; | |
8056 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8057 | { | |
8058 | /* Could not insert the breakpoint. */ | |
8059 | xfree (bp_tgt); | |
8060 | return NULL; | |
8061 | } | |
8062 | ||
8063 | return bp_tgt; | |
8064 | } | |
8065 | ||
8066 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8067 | ||
8068 | int | |
8069 | deprecated_remove_raw_breakpoint (void *bp) | |
8070 | { | |
8071 | struct bp_target_info *bp_tgt = bp; | |
8072 | int ret; | |
8073 | ||
8074 | ret = target_remove_breakpoint (bp_tgt); | |
8075 | xfree (bp_tgt); | |
8076 | ||
8077 | return ret; | |
8078 | } | |
8079 | ||
8080 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8081 | ||
8082 | static void *single_step_breakpoints[2]; | |
8083 | ||
8084 | /* Create and insert a breakpoint for software single step. */ | |
8085 | ||
8086 | void | |
8087 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8088 | { | |
8089 | void **bpt_p; | |
8090 | ||
8091 | if (single_step_breakpoints[0] == NULL) | |
8092 | bpt_p = &single_step_breakpoints[0]; | |
8093 | else | |
8094 | { | |
8095 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8096 | bpt_p = &single_step_breakpoints[1]; | |
8097 | } | |
8098 | ||
8099 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8100 | to only create the breakpoints once, and actually put them on the | |
8101 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8102 | adjust the addresses each time they were needed. Doing this requires | |
8103 | corresponding changes elsewhere where single step breakpoints are | |
8104 | handled, however. So, for now, we use this. */ | |
8105 | ||
8106 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8107 | if (*bpt_p == NULL) | |
1893a4c0 | 8108 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8109 | paddr_nz (next_pc)); |
8110 | } | |
8111 | ||
8112 | /* Remove and delete any breakpoints used for software single step. */ | |
8113 | ||
8114 | void | |
8115 | remove_single_step_breakpoints (void) | |
8116 | { | |
8117 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8118 | ||
8119 | /* See insert_single_step_breakpoint for more about this deprecated | |
8120 | call. */ | |
8121 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8122 | single_step_breakpoints[0] = NULL; | |
8123 | ||
8124 | if (single_step_breakpoints[1] != NULL) | |
8125 | { | |
8126 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8127 | single_step_breakpoints[1] = NULL; | |
8128 | } | |
8129 | } | |
8130 | ||
1aafd4da UW |
8131 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8132 | ||
8133 | static int | |
8134 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8135 | { | |
8136 | int i; | |
8137 | ||
8138 | for (i = 0; i < 2; i++) | |
8139 | { | |
8140 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8141 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8142 | return 1; | |
8143 | } | |
8144 | ||
8145 | return 0; | |
8146 | } | |
8147 | ||
74960c60 VP |
8148 | int breakpoints_always_inserted_mode (void) |
8149 | { | |
8150 | return always_inserted_mode; | |
8151 | } | |
8152 | ||
c906108c | 8153 | \f |
31e2b00f AS |
8154 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8155 | It is defined as a macro to prevent duplication. | |
8156 | COMMAND should be a string constant containing the name of the command. */ | |
8157 | #define BREAK_ARGS_HELP(command) \ | |
8158 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8159 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8160 | If a line number is specified, break at start of code for that line.\n\ | |
8161 | If a function is specified, break at start of code for that function.\n\ | |
8162 | If an address is specified, break at that exact address.\n\ | |
8163 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8164 | This is useful for breaking on return to a stack frame.\n\ | |
8165 | \n\ | |
8166 | THREADNUM is the number from \"info threads\".\n\ | |
8167 | CONDITION is a boolean expression.\n\ | |
8168 | \n\ | |
8169 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8170 | \n\ | |
8171 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8172 | ||
c906108c | 8173 | void |
fba45db2 | 8174 | _initialize_breakpoint (void) |
c906108c | 8175 | { |
fa8d40ab JJ |
8176 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8177 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8178 | struct cmd_list_element *c; |
8179 | ||
84acb35a | 8180 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8181 | |
c906108c SS |
8182 | breakpoint_chain = 0; |
8183 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8184 | before a breakpoint is set. */ | |
8185 | breakpoint_count = 0; | |
8186 | ||
1bedd215 AC |
8187 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8188 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8189 | Usage is `ignore N COUNT'.")); | |
c906108c | 8190 | if (xdb_commands) |
c5aa993b | 8191 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8192 | |
1bedd215 AC |
8193 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8194 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8195 | Give breakpoint number as argument after \"commands\".\n\ |
8196 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8197 | The commands themselves follow starting on the next line.\n\ | |
8198 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8199 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8200 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8201 | |
1bedd215 AC |
8202 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8203 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8204 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8205 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8206 | |
1bedd215 | 8207 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8208 | Set a temporary breakpoint.\n\ |
c906108c SS |
8209 | Like \"break\" except the breakpoint is only temporary,\n\ |
8210 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8211 | by using \"enable delete\" on the breakpoint number.\n\ |
8212 | \n" | |
8213 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8214 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8215 | |
1bedd215 | 8216 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8217 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8218 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8219 | some target hardware may not have this support.\n\ |
8220 | \n" | |
8221 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8222 | set_cmd_completer (c, location_completer); |
c906108c | 8223 | |
1bedd215 | 8224 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8225 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8226 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8227 | so it will be deleted when hit.\n\ |
8228 | \n" | |
8229 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8230 | set_cmd_completer (c, location_completer); |
c906108c | 8231 | |
1bedd215 AC |
8232 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8233 | Enable some breakpoints.\n\ | |
c906108c SS |
8234 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8235 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8236 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8237 | With a subcommand you can enable temporarily."), |
c906108c SS |
8238 | &enablelist, "enable ", 1, &cmdlist); |
8239 | if (xdb_commands) | |
1bedd215 AC |
8240 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8241 | Enable some breakpoints.\n\ | |
c906108c SS |
8242 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8243 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8244 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8245 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8246 | |
8247 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8248 | ||
1bedd215 AC |
8249 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8250 | Enable some breakpoints.\n\ | |
c906108c SS |
8251 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8252 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8253 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8254 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8255 | |
1a966eab AC |
8256 | add_cmd ("once", no_class, enable_once_command, _("\ |
8257 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8258 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8259 | &enablebreaklist); |
8260 | ||
1a966eab AC |
8261 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8262 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8263 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8264 | &enablebreaklist); |
8265 | ||
1a966eab AC |
8266 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8267 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8268 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8269 | &enablelist); |
8270 | ||
1a966eab AC |
8271 | add_cmd ("once", no_class, enable_once_command, _("\ |
8272 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8273 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8274 | &enablelist); |
8275 | ||
1bedd215 AC |
8276 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8277 | Disable some breakpoints.\n\ | |
c906108c SS |
8278 | Arguments are breakpoint numbers with spaces in between.\n\ |
8279 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8280 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8281 | &disablelist, "disable ", 1, &cmdlist); |
8282 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8283 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8284 | if (xdb_commands) | |
1bedd215 AC |
8285 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8286 | Disable some breakpoints.\n\ | |
c906108c SS |
8287 | Arguments are breakpoint numbers with spaces in between.\n\ |
8288 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8289 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8290 | |
1a966eab AC |
8291 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8292 | Disable some breakpoints.\n\ | |
c906108c SS |
8293 | Arguments are breakpoint numbers with spaces in between.\n\ |
8294 | To disable all breakpoints, give no argument.\n\ | |
8295 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8296 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8297 | &disablelist); |
8298 | ||
1bedd215 AC |
8299 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8300 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8301 | Arguments are breakpoint numbers with spaces in between.\n\ |
8302 | To delete all breakpoints, give no argument.\n\ | |
8303 | \n\ | |
8304 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8305 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8306 | &deletelist, "delete ", 1, &cmdlist); |
8307 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8308 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8309 | if (xdb_commands) |
1bedd215 AC |
8310 | add_com ("db", class_breakpoint, delete_command, _("\ |
8311 | Delete some breakpoints.\n\ | |
c906108c | 8312 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8313 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8314 | |
1a966eab AC |
8315 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8316 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8317 | Arguments are breakpoint numbers with spaces in between.\n\ |
8318 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8319 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8320 | &deletelist); |
8321 | ||
1bedd215 AC |
8322 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8323 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8324 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8325 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8326 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8327 | If an address is specified, breakpoints at that address are cleared.\n\ |
8328 | \n\ | |
8329 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8330 | is executing in.\n\ |
8331 | \n\ | |
1bedd215 | 8332 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8333 | |
1bedd215 | 8334 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8335 | Set breakpoint at specified line or function.\n" |
8336 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8337 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8338 | |
c906108c SS |
8339 | add_com_alias ("b", "break", class_run, 1); |
8340 | add_com_alias ("br", "break", class_run, 1); | |
8341 | add_com_alias ("bre", "break", class_run, 1); | |
8342 | add_com_alias ("brea", "break", class_run, 1); | |
8343 | ||
502fd408 | 8344 | if (xdb_commands) |
c906108c SS |
8345 | { |
8346 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8347 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8348 | } |
8349 | ||
8350 | if (dbx_commands) | |
8351 | { | |
1bedd215 AC |
8352 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8353 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8354 | &stoplist, "stop ", 1, &cmdlist); |
8355 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8356 | _("Break in function or address."), &stoplist); |
c5aa993b | 8357 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8358 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8359 | add_com ("status", class_info, breakpoints_info, _("\ |
8360 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8361 | The \"Type\" column indicates one of:\n\ |
8362 | \tbreakpoint - normal breakpoint\n\ | |
8363 | \twatchpoint - watchpoint\n\ | |
8364 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8365 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8366 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8367 | address and file/line number respectively.\n\ |
8368 | \n\ | |
8369 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8370 | are set to the address of the last breakpoint listed unless the command\n\ |
8371 | is prefixed with \"server \".\n\n\ | |
c906108c | 8372 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8373 | breakpoint set.")); |
c906108c SS |
8374 | } |
8375 | ||
1bedd215 AC |
8376 | add_info ("breakpoints", breakpoints_info, _("\ |
8377 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8378 | The \"Type\" column indicates one of:\n\ |
8379 | \tbreakpoint - normal breakpoint\n\ | |
8380 | \twatchpoint - watchpoint\n\ | |
8381 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8382 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8383 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8384 | address and file/line number respectively.\n\ |
8385 | \n\ | |
8386 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8387 | are set to the address of the last breakpoint listed unless the command\n\ |
8388 | is prefixed with \"server \".\n\n\ | |
c906108c | 8389 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8390 | breakpoint set.")); |
c906108c SS |
8391 | |
8392 | if (xdb_commands) | |
1bedd215 AC |
8393 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8394 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8395 | The \"Type\" column indicates one of:\n\ |
8396 | \tbreakpoint - normal breakpoint\n\ | |
8397 | \twatchpoint - watchpoint\n\ | |
8398 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8399 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8400 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8401 | address and file/line number respectively.\n\ |
8402 | \n\ | |
8403 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8404 | are set to the address of the last breakpoint listed unless the command\n\ |
8405 | is prefixed with \"server \".\n\n\ | |
c906108c | 8406 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8407 | breakpoint set.")); |
c906108c | 8408 | |
1a966eab AC |
8409 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8410 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8411 | The \"Type\" column indicates one of:\n\ |
8412 | \tbreakpoint - normal breakpoint\n\ | |
8413 | \twatchpoint - watchpoint\n\ | |
8414 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8415 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8416 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8417 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8418 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8419 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8420 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8421 | address and file/line number respectively.\n\ |
8422 | \n\ | |
8423 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8424 | are set to the address of the last breakpoint listed unless the command\n\ |
8425 | is prefixed with \"server \".\n\n\ | |
c906108c | 8426 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8427 | breakpoint set."), |
c906108c SS |
8428 | &maintenanceinfolist); |
8429 | ||
1bedd215 AC |
8430 | add_com ("catch", class_breakpoint, catch_command, _("\ |
8431 | Set catchpoints to catch events.\n\ | |
c906108c SS |
8432 | Raised signals may be caught:\n\ |
8433 | \tcatch signal - all signals\n\ | |
8434 | \tcatch signal <signame> - a particular signal\n\ | |
8435 | Raised exceptions may be caught:\n\ | |
8436 | \tcatch throw - all exceptions, when thrown\n\ | |
8437 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
8438 | \tcatch catch - all exceptions, when caught\n\ | |
8439 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
8440 | Thread or process events may be caught:\n\ | |
8441 | \tcatch thread_start - any threads, just after creation\n\ | |
8442 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8443 | \tcatch thread_join - any threads, just after joins\n\ | |
8444 | Process events may be caught:\n\ | |
8445 | \tcatch start - any processes, just after creation\n\ | |
8446 | \tcatch exit - any processes, just before expiration\n\ | |
8447 | \tcatch fork - calls to fork()\n\ | |
8448 | \tcatch vfork - calls to vfork()\n\ | |
8449 | \tcatch exec - calls to exec()\n\ | |
8450 | Dynamically-linked library events may be caught:\n\ | |
8451 | \tcatch load - loads of any library\n\ | |
8452 | \tcatch load <libname> - loads of a particular library\n\ | |
8453 | \tcatch unload - unloads of any library\n\ | |
8454 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8455 | The act of your program's execution stopping may also be caught:\n\ | |
8456 | \tcatch stop\n\n\ | |
8457 | C++ exceptions may be caught:\n\ | |
8458 | \tcatch throw - all exceptions, when thrown\n\ | |
8459 | \tcatch catch - all exceptions, when caught\n\ | |
f7f9143b JB |
8460 | Ada exceptions may be caught:\n\ |
8461 | \tcatch exception - all exceptions, when raised\n\ | |
8462 | \tcatch exception <name> - a particular exception, when raised\n\ | |
8463 | \tcatch exception unhandled - all unhandled exceptions, when raised\n\ | |
8464 | \tcatch assert - all failed assertions, when raised\n\ | |
c906108c SS |
8465 | \n\ |
8466 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8467 | after a fork or vfork is caught.\n\n\ | |
1bedd215 | 8468 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.")); |
c5aa993b | 8469 | |
1bedd215 AC |
8470 | add_com ("tcatch", class_breakpoint, tcatch_command, _("\ |
8471 | Set temporary catchpoints to catch events.\n\ | |
c906108c SS |
8472 | Args like \"catch\" command.\n\ |
8473 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8474 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
1bedd215 | 8475 | by using \"enable delete\" on the catchpoint number.")); |
c5aa993b | 8476 | |
1bedd215 AC |
8477 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8478 | Set a watchpoint for an expression.\n\ | |
c906108c | 8479 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8480 | an expression changes.")); |
5ba2abeb | 8481 | set_cmd_completer (c, location_completer); |
c906108c | 8482 | |
1bedd215 AC |
8483 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8484 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8485 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8486 | an expression is read.")); |
5ba2abeb | 8487 | set_cmd_completer (c, location_completer); |
c906108c | 8488 | |
1bedd215 AC |
8489 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8490 | Set a watchpoint for an expression.\n\ | |
c906108c | 8491 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8492 | an expression is either read or written.")); |
5ba2abeb | 8493 | set_cmd_completer (c, location_completer); |
c906108c SS |
8494 | |
8495 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8496 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8497 | |
8498 | ||
920d2a44 AC |
8499 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8500 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8501 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8502 | &can_use_hw_watchpoints, _("\ | |
8503 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8504 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8505 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8506 | such is available. (However, any hardware watchpoints that were\n\ | |
8507 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8508 | hardware.)"), |
8509 | NULL, | |
920d2a44 | 8510 | show_can_use_hw_watchpoints, |
85c07804 | 8511 | &setlist, &showlist); |
c906108c SS |
8512 | |
8513 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8514 | |
1bedd215 | 8515 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8516 | Breakpoint specific settings\n\ |
8517 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8518 | pending breakpoint behavior"), |
fa8d40ab JJ |
8519 | &breakpoint_set_cmdlist, "set breakpoint ", |
8520 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8521 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8522 | Breakpoint specific settings\n\ |
8523 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8524 | pending breakpoint behavior"), |
fa8d40ab JJ |
8525 | &breakpoint_show_cmdlist, "show breakpoint ", |
8526 | 0/*allow-unknown*/, &showlist); | |
8527 | ||
7915a72c AC |
8528 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8529 | &pending_break_support, _("\ | |
8530 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8531 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8532 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8533 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8534 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8535 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8536 | NULL, |
920d2a44 | 8537 | show_pending_break_support, |
6e1d7d6c AC |
8538 | &breakpoint_set_cmdlist, |
8539 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8540 | |
8541 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8542 | |
8543 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8544 | &automatic_hardware_breakpoints, _("\ | |
8545 | Set automatic usage of hardware breakpoints."), _("\ | |
8546 | Show automatic usage of hardware breakpoints."), _("\ | |
8547 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8548 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8549 | a warning will be emitted for such breakpoints."), | |
8550 | NULL, | |
8551 | show_automatic_hardware_breakpoints, | |
8552 | &breakpoint_set_cmdlist, | |
8553 | &breakpoint_show_cmdlist); | |
74960c60 VP |
8554 | |
8555 | add_setshow_boolean_cmd ("always-inserted", class_support, | |
8556 | &always_inserted_mode, _("\ | |
8557 | Set mode for inserting breakpoints."), _("\ | |
8558 | Show mode for inserting breakpoints."), _("\ | |
8559 | When this mode is off (which is the default), breakpoints are inserted in\n\ | |
8560 | inferior when it is resumed, and removed when execution stops. When this\n\ | |
8561 | mode is on, breakpoints are inserted immediately and removed only when\n\ | |
8562 | the user deletes the breakpoint."), | |
8563 | NULL, | |
8564 | &show_always_inserted_mode, | |
8565 | &breakpoint_set_cmdlist, | |
8566 | &breakpoint_show_cmdlist); | |
765dc015 VP |
8567 | |
8568 | automatic_hardware_breakpoints = 1; | |
c906108c | 8569 | } |