Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 DJ |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
5 | 2008 Free Software Foundation, Inc. | |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
776592bf | 24 | #include "hashtab.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "frame.h" | |
27 | #include "breakpoint.h" | |
28 | #include "gdbtypes.h" | |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
35 | #include "gdbthread.h" | |
36 | #include "target.h" | |
37 | #include "language.h" | |
38 | #include "gdb_string.h" | |
39 | #include "demangle.h" | |
40 | #include "annotate.h" | |
41 | #include "symfile.h" | |
42 | #include "objfiles.h" | |
0378c332 | 43 | #include "source.h" |
c5f0f3d0 | 44 | #include "linespec.h" |
c94fdfd0 | 45 | #include "completer.h" |
5b7f31a4 | 46 | #include "gdb.h" |
8b93c638 | 47 | #include "ui-out.h" |
e1507482 | 48 | #include "cli/cli-script.h" |
0225421b | 49 | #include "gdb_assert.h" |
fe898f56 | 50 | #include "block.h" |
a77053c2 | 51 | #include "solib.h" |
84acb35a JJ |
52 | #include "solist.h" |
53 | #include "observer.h" | |
60250e8b | 54 | #include "exceptions.h" |
765dc015 | 55 | #include "memattr.h" |
f7f9143b | 56 | #include "ada-lang.h" |
d1aa2f50 | 57 | #include "top.h" |
fa4727a6 | 58 | #include "wrapper.h" |
c906108c | 59 | |
104c1213 | 60 | #include "gdb-events.h" |
034dad6f | 61 | #include "mi/mi-common.h" |
104c1213 | 62 | |
c906108c SS |
63 | /* Prototypes for local functions. */ |
64 | ||
f107f563 VP |
65 | static void until_break_command_continuation (struct continuation_arg *arg, |
66 | int error); | |
c2c6d25f | 67 | |
a14ed312 | 68 | static void catch_command_1 (char *, int, int); |
c906108c | 69 | |
a14ed312 | 70 | static void enable_delete_command (char *, int); |
c906108c | 71 | |
a14ed312 | 72 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 73 | |
a14ed312 | 74 | static void enable_once_command (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 77 | |
a14ed312 | 78 | static void disable_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void enable_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 83 | |
a14ed312 | 84 | static void ignore_command (char *, int); |
c906108c | 85 | |
4efb68b1 | 86 | static int breakpoint_re_set_one (void *); |
c906108c | 87 | |
a14ed312 | 88 | static void clear_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void catch_command (char *, int); |
c906108c | 91 | |
a14ed312 | 92 | static void watch_command (char *, int); |
c906108c | 93 | |
a14ed312 | 94 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 95 | |
98deb0da | 96 | static void break_command_1 (char *, int, int); |
c906108c | 97 | |
a14ed312 | 98 | static void mention (struct breakpoint *); |
c906108c | 99 | |
4d28f7a8 | 100 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 101 | |
9f60f21b | 102 | static void check_duplicates (struct breakpoint *); |
c906108c | 103 | |
76897487 KB |
104 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
105 | ||
88f7da05 KB |
106 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
107 | enum bptype bptype); | |
76897487 | 108 | |
d674a25c | 109 | static void describe_other_breakpoints (CORE_ADDR, asection *, int); |
c906108c | 110 | |
a14ed312 | 111 | static void breakpoints_info (char *, int); |
c906108c | 112 | |
a14ed312 | 113 | static void breakpoint_1 (int, int); |
c906108c | 114 | |
89f9893c | 115 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 116 | |
4efb68b1 | 117 | static int breakpoint_cond_eval (void *); |
c906108c | 118 | |
4efb68b1 | 119 | static void cleanup_executing_breakpoints (void *); |
c906108c | 120 | |
a14ed312 | 121 | static void commands_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static void condition_command (char *, int); |
c906108c | 124 | |
a14ed312 | 125 | static int get_number_trailer (char **, int); |
c906108c | 126 | |
a14ed312 | 127 | void set_breakpoint_count (int); |
c906108c | 128 | |
c5aa993b JM |
129 | typedef enum |
130 | { | |
131 | mark_inserted, | |
132 | mark_uninserted | |
133 | } | |
134 | insertion_state_t; | |
c906108c | 135 | |
0bde7532 | 136 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 137 | |
a14ed312 | 138 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
139 | |
140 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 141 | |
4efb68b1 | 142 | static int watchpoint_check (void *); |
c906108c | 143 | |
a14ed312 | 144 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 145 | |
1900040c MS |
146 | static void create_overlay_event_breakpoint (char *); |
147 | ||
a14ed312 | 148 | static int hw_breakpoint_used_count (void); |
c906108c | 149 | |
a14ed312 | 150 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 151 | |
a14ed312 | 152 | static void hbreak_command (char *, int); |
c906108c | 153 | |
a14ed312 | 154 | static void thbreak_command (char *, int); |
c906108c | 155 | |
a14ed312 | 156 | static void watch_command_1 (char *, int, int); |
c906108c | 157 | |
a14ed312 | 158 | static void rwatch_command (char *, int); |
c906108c | 159 | |
a14ed312 | 160 | static void awatch_command (char *, int); |
c906108c | 161 | |
a14ed312 | 162 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 163 | |
a14ed312 KB |
164 | static void create_fork_vfork_event_catchpoint (int tempflag, |
165 | char *cond_string, | |
166 | enum bptype bp_kind); | |
7a292a7a | 167 | |
a14ed312 | 168 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 169 | |
a14ed312 | 170 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 171 | |
a14ed312 | 172 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 173 | |
a14ed312 | 174 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 175 | |
a14ed312 | 176 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 177 | |
a14ed312 | 178 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 179 | |
d85310f7 MS |
180 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
181 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 182 | |
a14ed312 | 183 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 186 | |
1aafd4da UW |
187 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
188 | ||
fe3f5fa8 VP |
189 | static void free_bp_location (struct bp_location *loc); |
190 | ||
55a3f01f VP |
191 | static void mark_breakpoints_out (void); |
192 | ||
a5606eee VP |
193 | static struct bp_location * |
194 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type); | |
195 | ||
74960c60 | 196 | static void update_global_location_list (void); |
a5606eee | 197 | |
74960c60 VP |
198 | static void update_global_location_list_nothrow (void); |
199 | ||
200 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
201 | ||
202 | static void insert_breakpoint_locations (void); | |
a5606eee | 203 | |
2cec12e5 AR |
204 | static const char * |
205 | bpdisp_text (enum bpdisp disp) | |
206 | { | |
207 | /* NOTE: the following values are a part of MI protocol and represent | |
208 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
209 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
210 | return bpdisps[(int) disp]; | |
211 | } | |
c906108c | 212 | |
2cec12e5 | 213 | /* Prototypes for exported functions. */ |
c906108c SS |
214 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
215 | if such is available. */ | |
216 | static int can_use_hw_watchpoints; | |
217 | ||
920d2a44 AC |
218 | static void |
219 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
220 | struct cmd_list_element *c, | |
221 | const char *value) | |
222 | { | |
223 | fprintf_filtered (file, _("\ | |
224 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
225 | value); | |
226 | } | |
227 | ||
fa8d40ab JJ |
228 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
229 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
230 | for unrecognized breakpoint locations. | |
231 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
232 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
233 | static void |
234 | show_pending_break_support (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 behavior regarding pending breakpoints is %s.\n"), | |
240 | value); | |
241 | } | |
fa8d40ab | 242 | |
765dc015 VP |
243 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
244 | set with "break" but falling in read-only memory. | |
245 | If 0, gdb will warn about such breakpoints, but won't automatically | |
246 | use hardware breakpoints. */ | |
247 | static int automatic_hardware_breakpoints; | |
248 | static void | |
249 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
250 | struct cmd_list_element *c, | |
251 | const char *value) | |
252 | { | |
253 | fprintf_filtered (file, _("\ | |
254 | Automatic usage of hardware breakpoints is %s.\n"), | |
255 | value); | |
256 | } | |
257 | ||
74960c60 VP |
258 | /* If 1, gdb will keep breakpoints inserted even as inferior is stopped, |
259 | and immediately insert any new breakpoints. If 0, gdb will insert | |
260 | breakpoints into inferior only when resuming it, and will remove | |
261 | breakpoints upon stop. */ | |
262 | static int always_inserted_mode = 0; | |
263 | static void | |
264 | show_always_inserted_mode (struct ui_file *file, int from_tty, | |
265 | struct cmd_list_element *c, const char *value) | |
266 | { | |
267 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
268 | } | |
269 | ||
765dc015 | 270 | |
a14ed312 | 271 | void _initialize_breakpoint (void); |
c906108c | 272 | |
c5aa993b | 273 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 274 | |
c906108c SS |
275 | /* Are we executing breakpoint commands? */ |
276 | static int executing_breakpoint_commands; | |
277 | ||
c02f5703 MS |
278 | /* Are overlay event breakpoints enabled? */ |
279 | static int overlay_events_enabled; | |
280 | ||
c906108c SS |
281 | /* Walk the following statement or block through all breakpoints. |
282 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
283 | breakpoint. */ | |
284 | ||
5c44784c | 285 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 286 | |
5c44784c JM |
287 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
288 | for (B = breakpoint_chain; \ | |
289 | B ? (TMP=B->next, 1): 0; \ | |
290 | B = TMP) | |
c906108c | 291 | |
7cc221ef DJ |
292 | /* Similar iterators for the low-level breakpoints. */ |
293 | ||
0d381245 | 294 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
295 | |
296 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
297 | for (B = bp_location_chain; \ | |
0d381245 | 298 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
299 | B = TMP) |
300 | ||
c906108c SS |
301 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
302 | ||
303 | int show_breakpoint_hit_counts = 1; | |
304 | ||
7cc221ef | 305 | /* Chains of all breakpoints defined. */ |
c906108c SS |
306 | |
307 | struct breakpoint *breakpoint_chain; | |
308 | ||
7cc221ef DJ |
309 | struct bp_location *bp_location_chain; |
310 | ||
20874c92 VP |
311 | /* The locations that no longer correspond to any breakpoint, |
312 | unlinked from bp_location_chain, but for which a hit | |
313 | may still be reported by a target. */ | |
314 | VEC(bp_location_p) *moribund_locations = NULL; | |
315 | ||
c906108c SS |
316 | /* Number of last breakpoint made. */ |
317 | ||
318 | int breakpoint_count; | |
319 | ||
c906108c SS |
320 | /* This function returns a pointer to the string representation of the |
321 | pathname of the dynamically-linked library that has just been | |
322 | loaded. | |
323 | ||
324 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
325 | or undefined results are guaranteed. | |
326 | ||
327 | This string's contents are only valid immediately after the | |
328 | inferior has stopped in the dynamic linker hook, and becomes | |
329 | invalid as soon as the inferior is continued. Clients should make | |
330 | a copy of this string if they wish to continue the inferior and | |
331 | then access the string. */ | |
332 | ||
333 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
334 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
335 | #endif | |
336 | ||
337 | /* This function returns a pointer to the string representation of the | |
338 | pathname of the dynamically-linked library that has just been | |
339 | unloaded. | |
340 | ||
341 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
342 | TRUE, or undefined results are guaranteed. | |
343 | ||
344 | This string's contents are only valid immediately after the | |
345 | inferior has stopped in the dynamic linker hook, and becomes | |
346 | invalid as soon as the inferior is continued. Clients should make | |
347 | a copy of this string if they wish to continue the inferior and | |
348 | then access the string. */ | |
349 | ||
350 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
351 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
352 | #endif | |
353 | ||
354 | /* This function is called by the "catch load" command. It allows the | |
355 | debugger to be notified by the dynamic linker when a specified | |
356 | library file (or any library file, if filename is NULL) is loaded. */ | |
357 | ||
358 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
359 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
8a3fe4f8 | 360 | error (_("catch of library loads not yet implemented on this platform")) |
c906108c SS |
361 | #endif |
362 | ||
363 | /* This function is called by the "catch unload" command. It allows | |
364 | the debugger to be notified by the dynamic linker when a specified | |
365 | library file (or any library file, if filename is NULL) is | |
366 | unloaded. */ | |
367 | ||
368 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
1272ad14 | 369 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \ |
8a3fe4f8 | 370 | error (_("catch of library unloads not yet implemented on this platform")) |
c906108c SS |
371 | #endif |
372 | ||
468d015d JJ |
373 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
374 | static int | |
375 | breakpoint_enabled (struct breakpoint *b) | |
376 | { | |
0d381245 | 377 | return (b->enable_state == bp_enabled); |
468d015d JJ |
378 | } |
379 | ||
c906108c SS |
380 | /* Set breakpoint count to NUM. */ |
381 | ||
382 | void | |
fba45db2 | 383 | set_breakpoint_count (int num) |
c906108c SS |
384 | { |
385 | breakpoint_count = num; | |
386 | set_internalvar (lookup_internalvar ("bpnum"), | |
387 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
388 | } | |
389 | ||
390 | /* Used in run_command to zero the hit count when a new run starts. */ | |
391 | ||
392 | void | |
fba45db2 | 393 | clear_breakpoint_hit_counts (void) |
c906108c SS |
394 | { |
395 | struct breakpoint *b; | |
396 | ||
397 | ALL_BREAKPOINTS (b) | |
398 | b->hit_count = 0; | |
399 | } | |
400 | ||
401 | /* Default address, symtab and line to put a breakpoint at | |
402 | for "break" command with no arg. | |
403 | if default_breakpoint_valid is zero, the other three are | |
404 | not valid, and "break" with no arg is an error. | |
405 | ||
406 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
407 | ||
408 | int default_breakpoint_valid; | |
409 | CORE_ADDR default_breakpoint_address; | |
410 | struct symtab *default_breakpoint_symtab; | |
411 | int default_breakpoint_line; | |
412 | \f | |
413 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
414 | Advance *PP after the string and any trailing whitespace. | |
415 | ||
416 | Currently the string can either be a number or "$" followed by the name | |
417 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 418 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
419 | |
420 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
421 | |
422 | TRAILER is a character which can be found after the number; most | |
423 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 424 | static int |
fba45db2 | 425 | get_number_trailer (char **pp, int trailer) |
c906108c | 426 | { |
5c44784c | 427 | int retval = 0; /* default */ |
c906108c SS |
428 | char *p = *pp; |
429 | ||
430 | if (p == NULL) | |
431 | /* Empty line means refer to the last breakpoint. */ | |
432 | return breakpoint_count; | |
433 | else if (*p == '$') | |
434 | { | |
435 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 436 | to pass to lookup_internalvar(). */ |
c906108c SS |
437 | char *varname; |
438 | char *start = ++p; | |
278cd55f | 439 | struct value *val; |
c906108c SS |
440 | |
441 | while (isalnum (*p) || *p == '_') | |
442 | p++; | |
443 | varname = (char *) alloca (p - start + 1); | |
444 | strncpy (varname, start, p - start); | |
445 | varname[p - start] = '\0'; | |
446 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 447 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
448 | retval = (int) value_as_long (val); |
449 | else | |
450 | { | |
a3f17187 | 451 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
452 | retval = 0; |
453 | } | |
c906108c SS |
454 | } |
455 | else | |
456 | { | |
457 | if (*p == '-') | |
458 | ++p; | |
459 | while (*p >= '0' && *p <= '9') | |
460 | ++p; | |
461 | if (p == *pp) | |
462 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
463 | { |
464 | /* Skip non-numeric token */ | |
465 | while (*p && !isspace((int) *p)) | |
466 | ++p; | |
467 | /* Return zero, which caller must interpret as error. */ | |
468 | retval = 0; | |
469 | } | |
470 | else | |
471 | retval = atoi (*pp); | |
472 | } | |
473 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
474 | { | |
475 | /* Trailing junk: return 0 and let caller print error msg. */ | |
476 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
477 | ++p; | |
478 | retval = 0; | |
c906108c | 479 | } |
c906108c SS |
480 | while (isspace (*p)) |
481 | p++; | |
482 | *pp = p; | |
483 | return retval; | |
484 | } | |
5c44784c | 485 | |
11cf8741 | 486 | |
5c44784c JM |
487 | /* Like get_number_trailer, but don't allow a trailer. */ |
488 | int | |
fba45db2 | 489 | get_number (char **pp) |
5c44784c JM |
490 | { |
491 | return get_number_trailer (pp, '\0'); | |
492 | } | |
493 | ||
494 | /* Parse a number or a range. | |
495 | * A number will be of the form handled by get_number. | |
496 | * A range will be of the form <number1> - <number2>, and | |
497 | * will represent all the integers between number1 and number2, | |
498 | * inclusive. | |
499 | * | |
500 | * While processing a range, this fuction is called iteratively; | |
501 | * At each call it will return the next value in the range. | |
502 | * | |
503 | * At the beginning of parsing a range, the char pointer PP will | |
504 | * be advanced past <number1> and left pointing at the '-' token. | |
505 | * Subsequent calls will not advance the pointer until the range | |
506 | * is completed. The call that completes the range will advance | |
507 | * pointer PP past <number2>. | |
508 | */ | |
509 | ||
510 | int | |
fba45db2 | 511 | get_number_or_range (char **pp) |
5c44784c JM |
512 | { |
513 | static int last_retval, end_value; | |
514 | static char *end_ptr; | |
515 | static int in_range = 0; | |
516 | ||
517 | if (**pp != '-') | |
518 | { | |
519 | /* Default case: pp is pointing either to a solo number, | |
520 | or to the first number of a range. */ | |
521 | last_retval = get_number_trailer (pp, '-'); | |
522 | if (**pp == '-') | |
523 | { | |
524 | char **temp; | |
525 | ||
526 | /* This is the start of a range (<number1> - <number2>). | |
527 | Skip the '-', parse and remember the second number, | |
528 | and also remember the end of the final token. */ | |
529 | ||
530 | temp = &end_ptr; | |
531 | end_ptr = *pp + 1; | |
532 | while (isspace ((int) *end_ptr)) | |
533 | end_ptr++; /* skip white space */ | |
534 | end_value = get_number (temp); | |
535 | if (end_value < last_retval) | |
536 | { | |
8a3fe4f8 | 537 | error (_("inverted range")); |
5c44784c JM |
538 | } |
539 | else if (end_value == last_retval) | |
540 | { | |
541 | /* degenerate range (number1 == number2). Advance the | |
542 | token pointer so that the range will be treated as a | |
543 | single number. */ | |
544 | *pp = end_ptr; | |
545 | } | |
546 | else | |
547 | in_range = 1; | |
548 | } | |
549 | } | |
550 | else if (! in_range) | |
8a3fe4f8 | 551 | error (_("negative value")); |
5c44784c JM |
552 | else |
553 | { | |
554 | /* pp points to the '-' that betokens a range. All | |
555 | number-parsing has already been done. Return the next | |
556 | integer value (one greater than the saved previous value). | |
557 | Do not advance the token pointer 'pp' until the end of range | |
558 | is reached. */ | |
559 | ||
560 | if (++last_retval == end_value) | |
561 | { | |
562 | /* End of range reached; advance token pointer. */ | |
563 | *pp = end_ptr; | |
564 | in_range = 0; | |
565 | } | |
566 | } | |
567 | return last_retval; | |
568 | } | |
569 | ||
570 | ||
c906108c SS |
571 | \f |
572 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
573 | ||
574 | static void | |
fba45db2 | 575 | condition_command (char *arg, int from_tty) |
c906108c | 576 | { |
52f0bd74 | 577 | struct breakpoint *b; |
c906108c | 578 | char *p; |
52f0bd74 | 579 | int bnum; |
c906108c SS |
580 | |
581 | if (arg == 0) | |
e2e0b3e5 | 582 | error_no_arg (_("breakpoint number")); |
c906108c SS |
583 | |
584 | p = arg; | |
585 | bnum = get_number (&p); | |
5c44784c | 586 | if (bnum == 0) |
8a3fe4f8 | 587 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
588 | |
589 | ALL_BREAKPOINTS (b) | |
590 | if (b->number == bnum) | |
2f069f6f JB |
591 | { |
592 | struct bp_location *loc = b->loc; | |
593 | for (; loc; loc = loc->next) | |
594 | { | |
595 | if (loc->cond) | |
596 | { | |
597 | xfree (loc->cond); | |
598 | loc->cond = 0; | |
599 | } | |
600 | } | |
601 | if (b->cond_string != NULL) | |
602 | xfree (b->cond_string); | |
c906108c | 603 | |
2f069f6f JB |
604 | if (*p == 0) |
605 | { | |
606 | b->cond_string = NULL; | |
607 | if (from_tty) | |
608 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
609 | } | |
610 | else | |
611 | { | |
612 | arg = p; | |
613 | /* I don't know if it matters whether this is the string the user | |
614 | typed in or the decompiled expression. */ | |
615 | b->cond_string = savestring (arg, strlen (arg)); | |
616 | b->condition_not_parsed = 0; | |
617 | for (loc = b->loc; loc; loc = loc->next) | |
618 | { | |
619 | arg = p; | |
620 | loc->cond = | |
621 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
622 | if (*arg) | |
623 | error (_("Junk at end of expression")); | |
624 | } | |
625 | } | |
626 | breakpoints_changed (); | |
627 | breakpoint_modify_event (b->number); | |
628 | return; | |
629 | } | |
c906108c | 630 | |
8a3fe4f8 | 631 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
632 | } |
633 | ||
c906108c | 634 | static void |
fba45db2 | 635 | commands_command (char *arg, int from_tty) |
c906108c | 636 | { |
52f0bd74 | 637 | struct breakpoint *b; |
c906108c | 638 | char *p; |
52f0bd74 | 639 | int bnum; |
c906108c SS |
640 | struct command_line *l; |
641 | ||
642 | /* If we allowed this, we would have problems with when to | |
643 | free the storage, if we change the commands currently | |
644 | being read from. */ | |
645 | ||
646 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 647 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
648 | |
649 | p = arg; | |
650 | bnum = get_number (&p); | |
5c44784c | 651 | |
c906108c | 652 | if (p && *p) |
8a3fe4f8 | 653 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 654 | |
c906108c SS |
655 | ALL_BREAKPOINTS (b) |
656 | if (b->number == bnum) | |
9ebf4acf AC |
657 | { |
658 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
659 | bnum); | |
660 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
661 | l = read_command_lines (tmpbuf, from_tty); | |
662 | do_cleanups (cleanups); | |
663 | free_command_lines (&b->commands); | |
664 | b->commands = l; | |
665 | breakpoints_changed (); | |
666 | breakpoint_modify_event (b->number); | |
667 | return; | |
c5aa993b | 668 | } |
8a3fe4f8 | 669 | error (_("No breakpoint number %d."), bnum); |
c906108c | 670 | } |
40c03ae8 EZ |
671 | |
672 | /* Like commands_command, but instead of reading the commands from | |
673 | input stream, takes them from an already parsed command structure. | |
674 | ||
675 | This is used by cli-script.c to DTRT with breakpoint commands | |
676 | that are part of if and while bodies. */ | |
677 | enum command_control_type | |
678 | commands_from_control_command (char *arg, struct command_line *cmd) | |
679 | { | |
680 | struct breakpoint *b; | |
681 | char *p; | |
682 | int bnum; | |
683 | ||
684 | /* If we allowed this, we would have problems with when to | |
685 | free the storage, if we change the commands currently | |
686 | being read from. */ | |
687 | ||
688 | if (executing_breakpoint_commands) | |
689 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
690 | ||
691 | /* An empty string for the breakpoint number means the last | |
692 | breakpoint, but get_number expects a NULL pointer. */ | |
693 | if (arg && !*arg) | |
694 | p = NULL; | |
695 | else | |
696 | p = arg; | |
697 | bnum = get_number (&p); | |
698 | ||
699 | if (p && *p) | |
700 | error (_("Unexpected extra arguments following breakpoint number.")); | |
701 | ||
702 | ALL_BREAKPOINTS (b) | |
703 | if (b->number == bnum) | |
704 | { | |
705 | free_command_lines (&b->commands); | |
706 | if (cmd->body_count != 1) | |
707 | error (_("Invalid \"commands\" block structure.")); | |
708 | /* We need to copy the commands because if/while will free the | |
709 | list after it finishes execution. */ | |
710 | b->commands = copy_command_lines (cmd->body_list[0]); | |
711 | breakpoints_changed (); | |
712 | breakpoint_modify_event (b->number); | |
713 | return simple_control; | |
2f069f6f | 714 | } |
40c03ae8 EZ |
715 | error (_("No breakpoint number %d."), bnum); |
716 | } | |
c906108c | 717 | \f |
8defab1a DJ |
718 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
719 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 720 | |
8defab1a DJ |
721 | void |
722 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 723 | { |
8defab1a | 724 | struct bp_location *b; |
c906108c SS |
725 | CORE_ADDR bp_addr = 0; |
726 | int bp_size = 0; | |
8defab1a | 727 | int bptoffset = 0; |
c5aa993b | 728 | |
ffce0d52 | 729 | ALL_BP_LOCATIONS (b) |
c5aa993b | 730 | { |
ffce0d52 | 731 | if (b->owner->type == bp_none) |
8a3fe4f8 | 732 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
733 | b->owner->number); |
734 | ||
735 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 736 | continue; |
ffce0d52 | 737 | if (!b->inserted) |
c5aa993b JM |
738 | continue; |
739 | /* Addresses and length of the part of the breakpoint that | |
740 | we need to copy. */ | |
8181d85f DJ |
741 | bp_addr = b->target_info.placed_address; |
742 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 743 | if (bp_size == 0) |
8181d85f | 744 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 745 | continue; |
8defab1a | 746 | |
c5aa993b JM |
747 | if (bp_addr + bp_size <= memaddr) |
748 | /* The breakpoint is entirely before the chunk of memory we | |
749 | are reading. */ | |
750 | continue; | |
8defab1a | 751 | |
c5aa993b JM |
752 | if (bp_addr >= memaddr + len) |
753 | /* The breakpoint is entirely after the chunk of memory we are | |
754 | reading. */ | |
755 | continue; | |
c5aa993b | 756 | |
8defab1a DJ |
757 | /* Offset within shadow_contents. */ |
758 | if (bp_addr < memaddr) | |
759 | { | |
760 | /* Only copy the second part of the breakpoint. */ | |
761 | bp_size -= memaddr - bp_addr; | |
762 | bptoffset = memaddr - bp_addr; | |
763 | bp_addr = memaddr; | |
764 | } | |
c5aa993b | 765 | |
8defab1a DJ |
766 | if (bp_addr + bp_size > memaddr + len) |
767 | { | |
768 | /* Only copy the first part of the breakpoint. */ | |
769 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
770 | } | |
c5aa993b | 771 | |
8defab1a DJ |
772 | memcpy (buf + bp_addr - memaddr, |
773 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 774 | } |
c906108c | 775 | } |
c906108c | 776 | \f |
c5aa993b | 777 | |
687595f9 | 778 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 779 | static void |
687595f9 DJ |
780 | insert_catchpoint (struct ui_out *uo, void *args) |
781 | { | |
782 | struct breakpoint *b = (struct breakpoint *) args; | |
783 | int val = -1; | |
784 | ||
785 | switch (b->type) | |
786 | { | |
787 | case bp_catch_fork: | |
fa113d1a | 788 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
789 | break; |
790 | case bp_catch_vfork: | |
fa113d1a | 791 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
792 | break; |
793 | case bp_catch_exec: | |
fa113d1a | 794 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
795 | break; |
796 | default: | |
e2e0b3e5 | 797 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
687595f9 DJ |
798 | break; |
799 | } | |
687595f9 DJ |
800 | } |
801 | ||
a5606eee VP |
802 | static int |
803 | is_hardware_watchpoint (struct breakpoint *bpt) | |
804 | { | |
805 | return (bpt->type == bp_hardware_watchpoint | |
806 | || bpt->type == bp_read_watchpoint | |
807 | || bpt->type == bp_access_watchpoint); | |
808 | } | |
7270d8f2 | 809 | |
fa4727a6 DJ |
810 | /* Find the current value of a watchpoint on EXP. Return the value in |
811 | *VALP and *RESULTP and the chain of intermediate and final values | |
812 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
813 | not need them. | |
814 | ||
815 | If an error occurs while evaluating the expression, *RESULTP will | |
816 | be set to NULL. *RESULTP may be a lazy value, if the result could | |
817 | not be read from memory. It is used to determine whether a value | |
818 | is user-specified (we should watch the whole value) or intermediate | |
819 | (we should watch only the bit used to locate the final value). | |
820 | ||
821 | If the final value, or any intermediate value, could not be read | |
822 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
823 | set to any referenced values. *VALP will never be a lazy value. | |
824 | This is the value which we store in struct breakpoint. | |
825 | ||
826 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
827 | value chain. The caller must free the values individually. If | |
828 | VAL_CHAIN is NULL, all generated values will be left on the value | |
829 | chain. */ | |
830 | ||
831 | static void | |
832 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
833 | struct value **resultp, struct value **val_chain) | |
834 | { | |
835 | struct value *mark, *new_mark, *result; | |
836 | ||
837 | *valp = NULL; | |
838 | if (resultp) | |
839 | *resultp = NULL; | |
840 | if (val_chain) | |
841 | *val_chain = NULL; | |
842 | ||
843 | /* Evaluate the expression. */ | |
844 | mark = value_mark (); | |
845 | result = NULL; | |
846 | gdb_evaluate_expression (exp, &result); | |
847 | new_mark = value_mark (); | |
848 | if (mark == new_mark) | |
849 | return; | |
850 | if (resultp) | |
851 | *resultp = result; | |
852 | ||
853 | /* Make sure it's not lazy, so that after the target stops again we | |
854 | have a non-lazy previous value to compare with. */ | |
855 | if (result != NULL | |
856 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
857 | *valp = result; | |
858 | ||
859 | if (val_chain) | |
860 | { | |
861 | /* Return the chain of intermediate values. We use this to | |
862 | decide which addresses to watch. */ | |
863 | *val_chain = new_mark; | |
864 | value_release_to_mark (mark); | |
865 | } | |
866 | } | |
867 | ||
868 | /* Assuming that B is a hardware watchpoint: | |
a5606eee VP |
869 | - Reparse watchpoint expression, is REPARSE is non-zero |
870 | - Evaluate expression and store the result in B->val | |
871 | - Update the list of values that must be watched in B->loc. | |
872 | ||
873 | If the watchpoint is disabled, do nothing. If this is | |
874 | local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 875 | static void |
a5606eee | 876 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 877 | { |
a5606eee | 878 | int within_current_scope; |
a5606eee VP |
879 | struct frame_id saved_frame_id; |
880 | struct bp_location *loc; | |
881 | bpstat bs; | |
882 | ||
74960c60 VP |
883 | /* We don't free locations. They are stored in |
884 | bp_location_chain and update_global_locations will | |
885 | eventually delete them and remove breakpoints if | |
886 | needed. */ | |
a5606eee VP |
887 | b->loc = NULL; |
888 | ||
889 | if (b->disposition == disp_del_at_next_stop) | |
890 | return; | |
891 | ||
892 | /* Save the current frame's ID so we can restore it after | |
893 | evaluating the watchpoint expression on its own frame. */ | |
894 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
895 | took a frame parameter, so that we didn't have to change the | |
896 | selected frame. */ | |
897 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
898 | ||
899 | /* Determine if the watchpoint is within scope. */ | |
900 | if (b->exp_valid_block == NULL) | |
901 | within_current_scope = 1; | |
902 | else | |
903 | { | |
904 | struct frame_info *fi; | |
905 | fi = frame_find_by_id (b->watchpoint_frame); | |
906 | within_current_scope = (fi != NULL); | |
907 | if (within_current_scope) | |
908 | select_frame (fi); | |
909 | } | |
910 | ||
911 | if (within_current_scope && reparse) | |
912 | { | |
913 | char *s; | |
914 | if (b->exp) | |
915 | { | |
916 | xfree (b->exp); | |
917 | b->exp = NULL; | |
918 | } | |
919 | s = b->exp_string; | |
920 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
921 | /* If the meaning of expression itself changed, the old value is | |
922 | no longer relevant. We don't want to report a watchpoint hit | |
923 | to the user when the old value and the new value may actually | |
924 | be completely different objects. */ | |
925 | value_free (b->val); | |
fa4727a6 DJ |
926 | b->val = NULL; |
927 | b->val_valid = 0; | |
a5606eee | 928 | } |
a5606eee VP |
929 | |
930 | /* If we failed to parse the expression, for example because | |
931 | it refers to a global variable in a not-yet-loaded shared library, | |
932 | don't try to insert watchpoint. We don't automatically delete | |
933 | such watchpoint, though, since failure to parse expression | |
934 | is different from out-of-scope watchpoint. */ | |
935 | if (within_current_scope && b->exp) | |
936 | { | |
fa4727a6 | 937 | struct value *val_chain, *v, *result, *next; |
a5606eee | 938 | |
fa4727a6 | 939 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 940 | |
a5606eee VP |
941 | /* Avoid setting b->val if it's already set. The meaning of |
942 | b->val is 'the last value' user saw, and we should update | |
943 | it only if we reported that last value to user. As it | |
944 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
945 | if (!b->val_valid) |
946 | { | |
947 | b->val = v; | |
948 | b->val_valid = 1; | |
949 | } | |
a5606eee VP |
950 | |
951 | /* Look at each value on the value chain. */ | |
fa4727a6 | 952 | for (v = val_chain; v; v = next) |
a5606eee VP |
953 | { |
954 | /* If it's a memory location, and GDB actually needed | |
955 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
956 | must watch it. If the first value returned is |
957 | still lazy, that means an error occurred reading it; | |
958 | watch it anyway in case it becomes readable. */ | |
a5606eee | 959 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 960 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
961 | { |
962 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 963 | |
a5606eee VP |
964 | /* We only watch structs and arrays if user asked |
965 | for it explicitly, never if they just happen to | |
966 | appear in the middle of some value chain. */ | |
fa4727a6 | 967 | if (v == result |
a5606eee VP |
968 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
969 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
970 | { | |
971 | CORE_ADDR addr; | |
972 | int len, type; | |
973 | struct bp_location *loc, **tmp; | |
974 | ||
975 | addr = VALUE_ADDRESS (v) + value_offset (v); | |
976 | len = TYPE_LENGTH (value_type (v)); | |
977 | type = hw_write; | |
978 | if (b->type == bp_read_watchpoint) | |
979 | type = hw_read; | |
980 | else if (b->type == bp_access_watchpoint) | |
981 | type = hw_access; | |
982 | ||
983 | loc = allocate_bp_location (b, bp_hardware_watchpoint); | |
984 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
985 | ; | |
986 | *tmp = loc; | |
987 | loc->address = addr; | |
988 | loc->length = len; | |
989 | loc->watchpoint_type = type; | |
990 | } | |
991 | } | |
992 | ||
993 | next = value_next (v); | |
994 | if (v != b->val) | |
995 | value_free (v); | |
996 | } | |
997 | ||
2ec93238 MK |
998 | /* We just regenerated the list of breakpoint locations. |
999 | The new location does not have its condition field set to anything | |
1000 | and therefore, we must always reparse the cond_string, independently | |
1001 | of the value of the reparse flag. */ | |
1002 | if (b->cond_string != NULL) | |
a5606eee VP |
1003 | { |
1004 | char *s = b->cond_string; | |
a5606eee VP |
1005 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1006 | } | |
1007 | } | |
1008 | else if (!within_current_scope) | |
7270d8f2 | 1009 | { |
a5606eee VP |
1010 | printf_filtered (_("\ |
1011 | Hardware watchpoint %d deleted because the program has left the block \n\ | |
1012 | in which its expression is valid.\n"), | |
1013 | b->number); | |
1014 | if (b->related_breakpoint) | |
1015 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1016 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1017 | } |
a5606eee VP |
1018 | |
1019 | /* Restore the selected frame. */ | |
1020 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1021 | } |
1022 | ||
a5606eee | 1023 | |
74960c60 VP |
1024 | /* Returns 1 iff breakpoint location should be |
1025 | inserted in the inferior. */ | |
1026 | static int | |
1027 | should_be_inserted (struct bp_location *bpt) | |
1028 | { | |
1029 | if (!breakpoint_enabled (bpt->owner)) | |
1030 | return 0; | |
1031 | ||
1032 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1033 | return 0; | |
1034 | ||
1035 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1036 | return 0; | |
1037 | ||
1038 | return 1; | |
1039 | } | |
1040 | ||
879bfdc2 DJ |
1041 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1042 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
1043 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
1044 | ||
1045 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1046 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1047 | static int |
879bfdc2 | 1048 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
1049 | struct ui_file *tmp_error_stream, |
1050 | int *disabled_breaks, int *process_warning, | |
1051 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
1052 | { |
1053 | int val = 0; | |
1054 | ||
74960c60 | 1055 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1056 | return 0; |
1057 | ||
8181d85f DJ |
1058 | /* Initialize the target-specific information. */ |
1059 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1060 | bpt->target_info.placed_address = bpt->address; | |
1061 | ||
879bfdc2 DJ |
1062 | if (bpt->loc_type == bp_loc_software_breakpoint |
1063 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1064 | { | |
765dc015 VP |
1065 | if (bpt->owner->type != bp_hardware_breakpoint) |
1066 | { | |
1067 | /* If the explicitly specified breakpoint type | |
1068 | is not hardware breakpoint, check the memory map to see | |
1069 | if the breakpoint address is in read only memory or not. | |
1070 | Two important cases are: | |
1071 | - location type is not hardware breakpoint, memory | |
1072 | is readonly. We change the type of the location to | |
1073 | hardware breakpoint. | |
1074 | - location type is hardware breakpoint, memory is read-write. | |
1075 | This means we've previously made the location hardware one, but | |
1076 | then the memory map changed, so we undo. | |
1077 | ||
1078 | When breakpoints are removed, remove_breakpoints will | |
1079 | use location types we've just set here, the only possible | |
1080 | problem is that memory map has changed during running program, | |
1081 | but it's not going to work anyway with current gdb. */ | |
1082 | struct mem_region *mr | |
1083 | = lookup_mem_region (bpt->target_info.placed_address); | |
1084 | ||
1085 | if (mr) | |
1086 | { | |
1087 | if (automatic_hardware_breakpoints) | |
1088 | { | |
1089 | int changed = 0; | |
1090 | enum bp_loc_type new_type; | |
1091 | ||
1092 | if (mr->attrib.mode != MEM_RW) | |
1093 | new_type = bp_loc_hardware_breakpoint; | |
1094 | else | |
1095 | new_type = bp_loc_software_breakpoint; | |
1096 | ||
1097 | if (new_type != bpt->loc_type) | |
1098 | { | |
1099 | static int said = 0; | |
1100 | bpt->loc_type = new_type; | |
1101 | if (!said) | |
1102 | { | |
1103 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1104 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1105 | said = 1; |
1106 | } | |
1107 | } | |
1108 | } | |
1109 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1110 | && mr->attrib.mode != MEM_RW) | |
1111 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1112 | paddr (bpt->address)); | |
1113 | } | |
1114 | } | |
1115 | ||
879bfdc2 DJ |
1116 | /* First check to see if we have to handle an overlay. */ |
1117 | if (overlay_debugging == ovly_off | |
1118 | || bpt->section == NULL | |
1119 | || !(section_is_overlay (bpt->section))) | |
1120 | { | |
1121 | /* No overlay handling: just set the breakpoint. */ | |
1122 | ||
1123 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1124 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1125 | else |
8181d85f | 1126 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1127 | } |
1128 | else | |
1129 | { | |
1130 | /* This breakpoint is in an overlay section. | |
1131 | Shall we set a breakpoint at the LMA? */ | |
1132 | if (!overlay_events_enabled) | |
1133 | { | |
1134 | /* Yes -- overlay event support is not active, | |
1135 | so we must try to set a breakpoint at the LMA. | |
1136 | This will not work for a hardware breakpoint. */ | |
1137 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1138 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1139 | bpt->owner->number); |
1140 | else | |
1141 | { | |
1142 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1143 | bpt->section); | |
1144 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1145 | bpt->overlay_target_info = bpt->target_info; |
1146 | bpt->overlay_target_info.placed_address = addr; | |
1147 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
1148 | if (val != 0) |
1149 | fprintf_unfiltered (tmp_error_stream, | |
1150 | "Overlay breakpoint %d failed: in ROM?", | |
1151 | bpt->owner->number); | |
1152 | } | |
1153 | } | |
1154 | /* Shall we set a breakpoint at the VMA? */ | |
1155 | if (section_is_mapped (bpt->section)) | |
1156 | { | |
1157 | /* Yes. This overlay section is mapped into memory. */ | |
1158 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1159 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1160 | else |
8181d85f | 1161 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1162 | } |
1163 | else | |
1164 | { | |
1165 | /* No. This breakpoint will not be inserted. | |
1166 | No error, but do not mark the bp as 'inserted'. */ | |
1167 | return 0; | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | if (val) | |
1172 | { | |
1173 | /* Can't set the breakpoint. */ | |
9bbf65bb | 1174 | if (solib_address (bpt->address)) |
879bfdc2 DJ |
1175 | { |
1176 | /* See also: disable_breakpoints_in_shlibs. */ | |
1177 | val = 0; | |
0d381245 | 1178 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1179 | if (!*disabled_breaks) |
1180 | { | |
1181 | fprintf_unfiltered (tmp_error_stream, | |
1182 | "Cannot insert breakpoint %d.\n", | |
1183 | bpt->owner->number); | |
1184 | fprintf_unfiltered (tmp_error_stream, | |
1185 | "Temporarily disabling shared library breakpoints:\n"); | |
1186 | } | |
1187 | *disabled_breaks = 1; | |
1188 | fprintf_unfiltered (tmp_error_stream, | |
1189 | "breakpoint #%d\n", bpt->owner->number); | |
1190 | } | |
1191 | else | |
879bfdc2 DJ |
1192 | { |
1193 | #ifdef ONE_PROCESS_WRITETEXT | |
1194 | *process_warning = 1; | |
1195 | #endif | |
1196 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
1197 | { | |
1198 | *hw_breakpoint_error = 1; | |
1199 | fprintf_unfiltered (tmp_error_stream, | |
1200 | "Cannot insert hardware breakpoint %d.\n", | |
1201 | bpt->owner->number); | |
1202 | } | |
1203 | else | |
1204 | { | |
1205 | fprintf_unfiltered (tmp_error_stream, | |
1206 | "Cannot insert breakpoint %d.\n", | |
1207 | bpt->owner->number); | |
1208 | fprintf_filtered (tmp_error_stream, | |
1209 | "Error accessing memory address "); | |
ed49a04f | 1210 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1211 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1212 | safe_strerror (val)); | |
1213 | } | |
1214 | ||
1215 | } | |
1216 | } | |
1217 | else | |
1218 | bpt->inserted = 1; | |
1219 | ||
1220 | return val; | |
1221 | } | |
1222 | ||
1223 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1224 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1225 | watchpoints. It's not clear that it's necessary... */ | |
1226 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1227 | { | |
a5606eee VP |
1228 | val = target_insert_watchpoint (bpt->address, |
1229 | bpt->length, | |
1230 | bpt->watchpoint_type); | |
1231 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1232 | } |
1233 | ||
879bfdc2 DJ |
1234 | else if (bpt->owner->type == bp_catch_fork |
1235 | || bpt->owner->type == bp_catch_vfork | |
1236 | || bpt->owner->type == bp_catch_exec) | |
1237 | { | |
71fff37b AC |
1238 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1239 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1240 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1241 | bpt->owner->number); | |
1242 | if (e.reason < 0) | |
879bfdc2 DJ |
1243 | bpt->owner->enable_state = bp_disabled; |
1244 | else | |
1245 | bpt->inserted = 1; | |
1640b821 DJ |
1246 | |
1247 | /* We've already printed an error message if there was a problem | |
1248 | inserting this catchpoint, and we've disabled the catchpoint, | |
1249 | so just return success. */ | |
1250 | return 0; | |
879bfdc2 DJ |
1251 | } |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
74960c60 VP |
1256 | /* Make sure all breakpoints are inserted in inferior. |
1257 | Throws exception on any error. | |
1258 | A breakpoint that is already inserted won't be inserted | |
1259 | again, so calling this function twice is safe. */ | |
1260 | void | |
1261 | insert_breakpoints (void) | |
1262 | { | |
1263 | struct breakpoint *bpt; | |
1264 | ||
1265 | ALL_BREAKPOINTS (bpt) | |
1266 | if (is_hardware_watchpoint (bpt)) | |
1267 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1268 | ||
1269 | update_global_location_list (); | |
1270 | ||
1271 | if (!always_inserted_mode && target_has_execution) | |
1272 | /* update_global_location_list does not insert breakpoints | |
1273 | when always_inserted_mode is not enabled. Explicitly | |
1274 | insert them now. */ | |
1275 | insert_breakpoint_locations (); | |
1276 | } | |
1277 | ||
c906108c SS |
1278 | /* insert_breakpoints is used when starting or continuing the program. |
1279 | remove_breakpoints is used when the program stops. | |
1280 | Both return zero if successful, | |
1281 | or an `errno' value if could not write the inferior. */ | |
1282 | ||
74960c60 VP |
1283 | static void |
1284 | insert_breakpoint_locations (void) | |
c906108c | 1285 | { |
a5606eee | 1286 | struct breakpoint *bpt; |
879bfdc2 | 1287 | struct bp_location *b, *temp; |
e236ba44 | 1288 | int error = 0; |
c906108c SS |
1289 | int val = 0; |
1290 | int disabled_breaks = 0; | |
81d0cc19 GS |
1291 | int hw_breakpoint_error = 0; |
1292 | int process_warning = 0; | |
c906108c | 1293 | |
81d0cc19 GS |
1294 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1295 | make_cleanup_ui_file_delete (tmp_error_stream); | |
74960c60 | 1296 | |
81d0cc19 GS |
1297 | /* Explicitly mark the warning -- this will only be printed if |
1298 | there was an error. */ | |
1299 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1300 | |
879bfdc2 DJ |
1301 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1302 | { | |
74960c60 | 1303 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1304 | continue; |
1305 | ||
f365de73 AS |
1306 | /* There is no point inserting thread-specific breakpoints if the |
1307 | thread no longer exists. */ | |
1308 | if (b->owner->thread != -1 | |
1309 | && !valid_thread_id (b->owner->thread)) | |
1310 | continue; | |
1311 | ||
879bfdc2 DJ |
1312 | val = insert_bp_location (b, tmp_error_stream, |
1313 | &disabled_breaks, &process_warning, | |
1314 | &hw_breakpoint_error); | |
1315 | if (val) | |
e236ba44 | 1316 | error = val; |
879bfdc2 | 1317 | } |
c906108c | 1318 | |
a5606eee VP |
1319 | /* If we failed to insert all locations of a watchpoint, |
1320 | remove them, as half-inserted watchpoint is of limited use. */ | |
1321 | ALL_BREAKPOINTS (bpt) | |
1322 | { | |
1323 | int some_failed = 0; | |
1324 | struct bp_location *loc; | |
1325 | ||
1326 | if (!is_hardware_watchpoint (bpt)) | |
1327 | continue; | |
1328 | ||
1329 | if (bpt->enable_state != bp_enabled) | |
1330 | continue; | |
74960c60 VP |
1331 | |
1332 | if (bpt->disposition == disp_del_at_next_stop) | |
1333 | continue; | |
a5606eee VP |
1334 | |
1335 | for (loc = bpt->loc; loc; loc = loc->next) | |
1336 | if (!loc->inserted) | |
1337 | { | |
1338 | some_failed = 1; | |
1339 | break; | |
1340 | } | |
1341 | if (some_failed) | |
1342 | { | |
1343 | for (loc = bpt->loc; loc; loc = loc->next) | |
1344 | if (loc->inserted) | |
1345 | remove_breakpoint (loc, mark_uninserted); | |
1346 | ||
1347 | hw_breakpoint_error = 1; | |
1348 | fprintf_unfiltered (tmp_error_stream, | |
1349 | "Could not insert hardware watchpoint %d.\n", | |
1350 | bpt->number); | |
1351 | error = -1; | |
1352 | } | |
1353 | } | |
1354 | ||
e236ba44 | 1355 | if (error) |
81d0cc19 GS |
1356 | { |
1357 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1358 | message about possibly exhausted resources. */ | |
879bfdc2 | 1359 | if (hw_breakpoint_error) |
81d0cc19 | 1360 | { |
c6510018 MS |
1361 | fprintf_unfiltered (tmp_error_stream, |
1362 | "Could not insert hardware breakpoints:\n\ | |
1363 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1364 | } |
c6510018 | 1365 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1366 | if (process_warning) |
c6510018 MS |
1367 | fprintf_unfiltered (tmp_error_stream, |
1368 | "The same program may be running in another process."); | |
1369 | #endif | |
81d0cc19 GS |
1370 | target_terminal_ours_for_output (); |
1371 | error_stream (tmp_error_stream); | |
1372 | } | |
c906108c SS |
1373 | } |
1374 | ||
c906108c | 1375 | int |
fba45db2 | 1376 | remove_breakpoints (void) |
c906108c | 1377 | { |
0bde7532 | 1378 | struct bp_location *b; |
c906108c SS |
1379 | int val; |
1380 | ||
0bde7532 | 1381 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1382 | { |
0bde7532 | 1383 | if (b->inserted) |
c5aa993b JM |
1384 | { |
1385 | val = remove_breakpoint (b, mark_uninserted); | |
1386 | if (val != 0) | |
1387 | return val; | |
1388 | } | |
1389 | } | |
c906108c SS |
1390 | return 0; |
1391 | } | |
1392 | ||
692590c1 | 1393 | int |
80ce1ecb | 1394 | remove_hw_watchpoints (void) |
692590c1 | 1395 | { |
0bde7532 | 1396 | struct bp_location *b; |
692590c1 MS |
1397 | int val; |
1398 | ||
0bde7532 | 1399 | ALL_BP_LOCATIONS (b) |
692590c1 | 1400 | { |
0bde7532 | 1401 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1402 | { |
1403 | val = remove_breakpoint (b, mark_uninserted); | |
1404 | if (val != 0) | |
1405 | return val; | |
1406 | } | |
1407 | } | |
1408 | return 0; | |
1409 | } | |
1410 | ||
c906108c | 1411 | int |
fba45db2 | 1412 | reattach_breakpoints (int pid) |
c906108c | 1413 | { |
0bde7532 | 1414 | struct bp_location *b; |
c906108c | 1415 | int val; |
ce696e05 | 1416 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 DJ |
1417 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1418 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; | |
1419 | ||
1420 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1421 | |
ce696e05 | 1422 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1423 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1424 | { |
0bde7532 | 1425 | if (b->inserted) |
c5aa993b | 1426 | { |
a4954f26 DJ |
1427 | b->inserted = 0; |
1428 | val = insert_bp_location (b, tmp_error_stream, | |
1429 | &dummy1, &dummy2, &dummy3); | |
c5aa993b JM |
1430 | if (val != 0) |
1431 | { | |
ce696e05 | 1432 | do_cleanups (old_chain); |
c5aa993b JM |
1433 | return val; |
1434 | } | |
1435 | } | |
1436 | } | |
ce696e05 | 1437 | do_cleanups (old_chain); |
c906108c SS |
1438 | return 0; |
1439 | } | |
1440 | ||
1441 | void | |
fba45db2 | 1442 | update_breakpoints_after_exec (void) |
c906108c | 1443 | { |
c5aa993b JM |
1444 | struct breakpoint *b; |
1445 | struct breakpoint *temp; | |
74960c60 | 1446 | struct cleanup *cleanup; |
c906108c SS |
1447 | |
1448 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1449 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1450 | shadow is NOT valid after an exec()! */ | |
1451 | mark_breakpoints_out (); | |
1452 | ||
74960c60 VP |
1453 | /* The binary we used to debug is now gone, and we're updating |
1454 | breakpoints for the new binary. Until we're done, we should not | |
1455 | try to insert breakpoints. */ | |
0b080f59 | 1456 | cleanup = make_cleanup_restore_integer (&always_inserted_mode); |
74960c60 VP |
1457 | always_inserted_mode = 0; |
1458 | ||
c906108c | 1459 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b JM |
1460 | { |
1461 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1462 | if (b->type == bp_shlib_event) | |
1463 | { | |
1464 | delete_breakpoint (b); | |
1465 | continue; | |
1466 | } | |
c906108c | 1467 | |
1900040c MS |
1468 | /* Thread event breakpoints must be set anew after an exec(), |
1469 | as must overlay event breakpoints. */ | |
1470 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1471 | { |
1472 | delete_breakpoint (b); | |
1473 | continue; | |
1474 | } | |
1475 | ||
c5aa993b JM |
1476 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1477 | if (b->type == bp_step_resume) | |
1478 | { | |
1479 | delete_breakpoint (b); | |
1480 | continue; | |
1481 | } | |
1482 | ||
611c83ae PA |
1483 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1484 | after an exec. */ | |
1485 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1486 | { | |
1487 | delete_breakpoint (b); | |
1488 | continue; | |
1489 | } | |
1490 | ||
c5aa993b JM |
1491 | /* Don't delete an exec catchpoint, because else the inferior |
1492 | won't stop when it ought! | |
1493 | ||
1494 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1495 | on this target, we may not be able to stop when the vfork is |
1496 | seen, but only when the subsequent exec is seen. (And because | |
1497 | deleting fork catchpoints here but not vfork catchpoints will | |
e14a792b | 1498 | seem mysterious to users, keep those too.) */ |
c5aa993b JM |
1499 | if ((b->type == bp_catch_exec) || |
1500 | (b->type == bp_catch_vfork) || | |
1501 | (b->type == bp_catch_fork)) | |
1502 | { | |
c5aa993b JM |
1503 | continue; |
1504 | } | |
1505 | ||
1506 | /* bp_finish is a special case. The only way we ought to be able | |
1507 | to see one of these when an exec() has happened, is if the user | |
1508 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1509 | carries them to the call-site of the current callee, by setting | |
1510 | a temporary bp there and resuming. But in this case, the finish | |
1511 | will carry them entirely through the vfork & exec. | |
1512 | ||
1513 | We don't want to allow a bp_finish to remain inserted now. But | |
1514 | we can't safely delete it, 'cause finish_command has a handle to | |
1515 | the bp on a bpstat, and will later want to delete it. There's a | |
1516 | chance (and I've seen it happen) that if we delete the bp_finish | |
1517 | here, that its storage will get reused by the time finish_command | |
1518 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1519 | We really must allow finish_command to delete a bp_finish. | |
1520 | ||
53a5351d JM |
1521 | In the absense of a general solution for the "how do we know |
1522 | it's safe to delete something others may have handles to?" | |
1523 | problem, what we'll do here is just uninsert the bp_finish, and | |
1524 | let finish_command delete it. | |
1525 | ||
1526 | (We know the bp_finish is "doomed" in the sense that it's | |
1527 | momentary, and will be deleted as soon as finish_command sees | |
1528 | the inferior stopped. So it doesn't matter that the bp's | |
1529 | address is probably bogus in the new a.out, unlike e.g., the | |
1530 | solib breakpoints.) */ | |
c5aa993b | 1531 | |
c5aa993b JM |
1532 | if (b->type == bp_finish) |
1533 | { | |
1534 | continue; | |
1535 | } | |
1536 | ||
1537 | /* Without a symbolic address, we have little hope of the | |
1538 | pre-exec() address meaning the same thing in the post-exec() | |
1539 | a.out. */ | |
1540 | if (b->addr_string == NULL) | |
1541 | { | |
1542 | delete_breakpoint (b); | |
1543 | continue; | |
1544 | } | |
c5aa993b | 1545 | } |
1900040c MS |
1546 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1547 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
74960c60 | 1548 | do_cleanups (cleanup); |
c906108c SS |
1549 | } |
1550 | ||
1551 | int | |
fba45db2 | 1552 | detach_breakpoints (int pid) |
c906108c | 1553 | { |
0bde7532 | 1554 | struct bp_location *b; |
c906108c | 1555 | int val; |
ce696e05 | 1556 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1557 | |
39f77062 | 1558 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1559 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1560 | |
ce696e05 KB |
1561 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1562 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1563 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1564 | { |
0bde7532 | 1565 | if (b->inserted) |
c5aa993b JM |
1566 | { |
1567 | val = remove_breakpoint (b, mark_inserted); | |
1568 | if (val != 0) | |
1569 | { | |
ce696e05 | 1570 | do_cleanups (old_chain); |
c5aa993b JM |
1571 | return val; |
1572 | } | |
1573 | } | |
1574 | } | |
ce696e05 | 1575 | do_cleanups (old_chain); |
c906108c SS |
1576 | return 0; |
1577 | } | |
1578 | ||
1579 | static int | |
0bde7532 | 1580 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1581 | { |
1582 | int val; | |
c5aa993b | 1583 | |
0bde7532 | 1584 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1585 | /* Permanent breakpoints cannot be inserted or removed. */ |
1586 | return 0; | |
1587 | ||
74960c60 VP |
1588 | /* The type of none suggests that owner is actually deleted. |
1589 | This should not ever happen. */ | |
1590 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1591 | |
1592 | if (b->loc_type == bp_loc_software_breakpoint | |
1593 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1594 | { |
c02f5703 MS |
1595 | /* "Normal" instruction breakpoint: either the standard |
1596 | trap-instruction bp (bp_breakpoint), or a | |
1597 | bp_hardware_breakpoint. */ | |
1598 | ||
1599 | /* First check to see if we have to handle an overlay. */ | |
1600 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1601 | || b->section == NULL |
1602 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1603 | { |
1604 | /* No overlay handling: just remove the breakpoint. */ | |
1605 | ||
0bde7532 | 1606 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1607 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1608 | else |
8181d85f | 1609 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1610 | } |
c906108c SS |
1611 | else |
1612 | { | |
c02f5703 MS |
1613 | /* This breakpoint is in an overlay section. |
1614 | Did we set a breakpoint at the LMA? */ | |
1615 | if (!overlay_events_enabled) | |
1616 | { | |
1617 | /* Yes -- overlay event support is not active, so we | |
1618 | should have set a breakpoint at the LMA. Remove it. | |
1619 | */ | |
c02f5703 MS |
1620 | /* Ignore any failures: if the LMA is in ROM, we will |
1621 | have already warned when we failed to insert it. */ | |
0bde7532 | 1622 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1623 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1624 | else |
8181d85f | 1625 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1626 | } |
1627 | /* Did we set a breakpoint at the VMA? | |
1628 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1629 | if (b->inserted) |
c906108c | 1630 | { |
c02f5703 MS |
1631 | /* Yes -- remove it. Previously we did not bother to |
1632 | remove the breakpoint if the section had been | |
1633 | unmapped, but let's not rely on that being safe. We | |
1634 | don't know what the overlay manager might do. */ | |
0bde7532 | 1635 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1636 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1637 | |
1638 | /* However, we should remove *software* breakpoints only | |
1639 | if the section is still mapped, or else we overwrite | |
1640 | wrong code with the saved shadow contents. */ | |
1641 | else if (section_is_mapped (b->section)) | |
8181d85f | 1642 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1643 | else |
1644 | val = 0; | |
c906108c | 1645 | } |
c02f5703 MS |
1646 | else |
1647 | { | |
1648 | /* No -- not inserted, so no need to remove. No error. */ | |
1649 | val = 0; | |
1650 | } | |
c906108c SS |
1651 | } |
1652 | if (val) | |
1653 | return val; | |
0bde7532 | 1654 | b->inserted = (is == mark_inserted); |
c906108c | 1655 | } |
a5606eee | 1656 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1657 | { |
278cd55f AC |
1658 | struct value *v; |
1659 | struct value *n; | |
c5aa993b | 1660 | |
0bde7532 | 1661 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1662 | val = target_remove_watchpoint (b->address, b->length, |
1663 | b->watchpoint_type); | |
2e70b7b9 | 1664 | |
c906108c | 1665 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1666 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1667 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1668 | b->owner->number); |
c906108c | 1669 | } |
0bde7532 DJ |
1670 | else if ((b->owner->type == bp_catch_fork || |
1671 | b->owner->type == bp_catch_vfork || | |
1672 | b->owner->type == bp_catch_exec) | |
468d015d | 1673 | && breakpoint_enabled (b->owner) |
0bde7532 | 1674 | && !b->duplicate) |
c906108c SS |
1675 | { |
1676 | val = -1; | |
0bde7532 | 1677 | switch (b->owner->type) |
c5aa993b JM |
1678 | { |
1679 | case bp_catch_fork: | |
39f77062 | 1680 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1681 | break; |
1682 | case bp_catch_vfork: | |
39f77062 | 1683 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1684 | break; |
1685 | case bp_catch_exec: | |
39f77062 | 1686 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1687 | break; |
ac9a91a7 | 1688 | default: |
8a3fe4f8 | 1689 | warning (_("Internal error, %s line %d."), __FILE__, __LINE__); |
ac9a91a7 | 1690 | break; |
c5aa993b | 1691 | } |
c906108c SS |
1692 | if (val) |
1693 | return val; | |
0bde7532 | 1694 | b->inserted = (is == mark_inserted); |
c906108c | 1695 | } |
c906108c SS |
1696 | |
1697 | return 0; | |
1698 | } | |
1699 | ||
1700 | /* Clear the "inserted" flag in all breakpoints. */ | |
1701 | ||
55a3f01f | 1702 | static void |
fba45db2 | 1703 | mark_breakpoints_out (void) |
c906108c | 1704 | { |
075f6582 | 1705 | struct bp_location *bpt; |
c906108c | 1706 | |
075f6582 DJ |
1707 | ALL_BP_LOCATIONS (bpt) |
1708 | bpt->inserted = 0; | |
c906108c SS |
1709 | } |
1710 | ||
53a5351d JM |
1711 | /* Clear the "inserted" flag in all breakpoints and delete any |
1712 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1713 | |
1714 | Plus other such housekeeping that has to be done for breakpoints | |
1715 | between runs. | |
1716 | ||
53a5351d JM |
1717 | Note: this function gets called at the end of a run (by |
1718 | generic_mourn_inferior) and when a run begins (by | |
1719 | init_wait_for_inferior). */ | |
c906108c SS |
1720 | |
1721 | ||
1722 | ||
1723 | void | |
fba45db2 | 1724 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1725 | { |
52f0bd74 | 1726 | struct breakpoint *b, *temp; |
075f6582 | 1727 | struct bp_location *bpt; |
c906108c | 1728 | |
075f6582 DJ |
1729 | ALL_BP_LOCATIONS (bpt) |
1730 | bpt->inserted = 0; | |
1731 | ||
c906108c | 1732 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1733 | { |
c5aa993b JM |
1734 | switch (b->type) |
1735 | { | |
1736 | case bp_call_dummy: | |
1737 | case bp_watchpoint_scope: | |
c906108c | 1738 | |
c5aa993b JM |
1739 | /* If the call dummy breakpoint is at the entry point it will |
1740 | cause problems when the inferior is rerun, so we better | |
1741 | get rid of it. | |
c906108c | 1742 | |
c5aa993b JM |
1743 | Also get rid of scope breakpoints. */ |
1744 | delete_breakpoint (b); | |
1745 | break; | |
c906108c | 1746 | |
c5aa993b JM |
1747 | case bp_watchpoint: |
1748 | case bp_hardware_watchpoint: | |
1749 | case bp_read_watchpoint: | |
1750 | case bp_access_watchpoint: | |
c906108c | 1751 | |
c5aa993b JM |
1752 | /* Likewise for watchpoints on local expressions. */ |
1753 | if (b->exp_valid_block != NULL) | |
1754 | delete_breakpoint (b); | |
967af18d | 1755 | else if (context == inf_starting) |
c860120c PM |
1756 | { |
1757 | /* Reset val field to force reread of starting value | |
1758 | in insert_breakpoints. */ | |
1759 | if (b->val) | |
1760 | value_free (b->val); | |
1761 | b->val = NULL; | |
fa4727a6 | 1762 | b->val_valid = 0; |
c860120c | 1763 | } |
c5aa993b JM |
1764 | break; |
1765 | default: | |
c5aa993b JM |
1766 | break; |
1767 | } | |
1768 | } | |
c906108c SS |
1769 | } |
1770 | ||
c2c6d25f JM |
1771 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1772 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1773 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1774 | permanent breakpoint. | |
1775 | - When continuing from a location with an ordinary breakpoint, we | |
1776 | actually single step once before calling insert_breakpoints. | |
1777 | - When continuing from a localion with a permanent breakpoint, we | |
1778 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1779 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1780 | |
c2c6d25f | 1781 | enum breakpoint_here |
fba45db2 | 1782 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1783 | { |
89f9893c | 1784 | const struct bp_location *bpt; |
c2c6d25f | 1785 | int any_breakpoint_here = 0; |
c906108c | 1786 | |
075f6582 DJ |
1787 | ALL_BP_LOCATIONS (bpt) |
1788 | { | |
1789 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1790 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1791 | continue; | |
1792 | ||
468d015d | 1793 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1794 | || bpt->owner->enable_state == bp_permanent) |
1795 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1796 | { | |
1797 | if (overlay_debugging | |
1798 | && section_is_overlay (bpt->section) | |
1799 | && !section_is_mapped (bpt->section)) | |
1800 | continue; /* unmapped overlay -- can't be a match */ | |
1801 | else if (bpt->owner->enable_state == bp_permanent) | |
1802 | return permanent_breakpoint_here; | |
1803 | else | |
1804 | any_breakpoint_here = 1; | |
1805 | } | |
1806 | } | |
c906108c | 1807 | |
c2c6d25f | 1808 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1809 | } |
1810 | ||
c2c6d25f | 1811 | |
c36b740a VP |
1812 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1813 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1814 | This does not check for single-step breakpoints, which are | |
1815 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1816 | |
1817 | int | |
c36b740a | 1818 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1819 | { |
89f9893c | 1820 | const struct bp_location *bpt; |
c906108c | 1821 | |
075f6582 | 1822 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1823 | { |
075f6582 DJ |
1824 | if (bpt->loc_type != bp_loc_software_breakpoint |
1825 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1826 | continue; | |
1827 | ||
1828 | if (bpt->inserted | |
1829 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1830 | { | |
1831 | if (overlay_debugging | |
1832 | && section_is_overlay (bpt->section) | |
1833 | && !section_is_mapped (bpt->section)) | |
1834 | continue; /* unmapped overlay -- can't be a match */ | |
1835 | else | |
1836 | return 1; | |
1837 | } | |
c5aa993b | 1838 | } |
c36b740a VP |
1839 | return 0; |
1840 | } | |
1841 | ||
1842 | /* Returns non-zero iff there's either regular breakpoint | |
1843 | or a single step breakpoint inserted at PC. */ | |
1844 | ||
1845 | int | |
1846 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1847 | { | |
1848 | if (regular_breakpoint_inserted_here_p (pc)) | |
1849 | return 1; | |
c906108c | 1850 | |
1aafd4da UW |
1851 | if (single_step_breakpoint_inserted_here_p (pc)) |
1852 | return 1; | |
1853 | ||
c906108c SS |
1854 | return 0; |
1855 | } | |
1856 | ||
4fa8626c DJ |
1857 | /* This function returns non-zero iff there is a software breakpoint |
1858 | inserted at PC. */ | |
1859 | ||
1860 | int | |
1861 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1862 | { | |
89f9893c | 1863 | const struct bp_location *bpt; |
4fa8626c DJ |
1864 | int any_breakpoint_here = 0; |
1865 | ||
1866 | ALL_BP_LOCATIONS (bpt) | |
1867 | { | |
1868 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1869 | continue; | |
1870 | ||
0d381245 | 1871 | if (bpt->inserted |
4fa8626c DJ |
1872 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1873 | { | |
1874 | if (overlay_debugging | |
1875 | && section_is_overlay (bpt->section) | |
1876 | && !section_is_mapped (bpt->section)) | |
1877 | continue; /* unmapped overlay -- can't be a match */ | |
1878 | else | |
1879 | return 1; | |
1880 | } | |
1881 | } | |
1882 | ||
1aafd4da UW |
1883 | /* Also check for software single-step breakpoints. */ |
1884 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1885 | return 1; | |
1886 | ||
4fa8626c DJ |
1887 | return 0; |
1888 | } | |
1889 | ||
075f6582 DJ |
1890 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1891 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1892 | |
1893 | int | |
39f77062 | 1894 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1895 | { |
89f9893c | 1896 | const struct bp_location *bpt; |
c906108c SS |
1897 | int thread; |
1898 | ||
39f77062 | 1899 | thread = pid_to_thread_id (ptid); |
c906108c | 1900 | |
075f6582 | 1901 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1902 | { |
075f6582 DJ |
1903 | if (bpt->loc_type != bp_loc_software_breakpoint |
1904 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1905 | continue; | |
1906 | ||
468d015d | 1907 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1908 | || bpt->owner->enable_state == bp_permanent) |
1909 | && bpt->address == pc | |
1910 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1911 | { | |
1912 | if (overlay_debugging | |
1913 | && section_is_overlay (bpt->section) | |
1914 | && !section_is_mapped (bpt->section)) | |
1915 | continue; /* unmapped overlay -- can't be a match */ | |
1916 | else | |
1917 | return 1; | |
1918 | } | |
c5aa993b | 1919 | } |
c906108c SS |
1920 | |
1921 | return 0; | |
1922 | } | |
c906108c | 1923 | \f |
c5aa993b | 1924 | |
c906108c SS |
1925 | /* bpstat stuff. External routines' interfaces are documented |
1926 | in breakpoint.h. */ | |
1927 | ||
1928 | int | |
fba45db2 | 1929 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1930 | { |
1931 | return | |
1932 | (ep->type == bp_catch_load) | |
1933 | || (ep->type == bp_catch_unload) | |
1934 | || (ep->type == bp_catch_fork) | |
1935 | || (ep->type == bp_catch_vfork) | |
dfdfb3ca | 1936 | || (ep->type == bp_catch_exec); |
c906108c | 1937 | |
c5aa993b | 1938 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1939 | } |
c5aa993b | 1940 | |
c906108c | 1941 | int |
fba45db2 | 1942 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1943 | { |
1944 | return | |
1945 | (ep->type == bp_catch_load) | |
d85310f7 | 1946 | || (ep->type == bp_catch_unload); |
c906108c SS |
1947 | } |
1948 | ||
198757a8 VP |
1949 | void |
1950 | bpstat_free (bpstat bs) | |
1951 | { | |
1952 | if (bs->old_val != NULL) | |
1953 | value_free (bs->old_val); | |
1954 | free_command_lines (&bs->commands); | |
1955 | xfree (bs); | |
1956 | } | |
1957 | ||
c906108c SS |
1958 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1959 | Also free any storage that is part of a bpstat. */ | |
1960 | ||
1961 | void | |
fba45db2 | 1962 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1963 | { |
1964 | bpstat p; | |
1965 | bpstat q; | |
1966 | ||
1967 | if (bsp == 0) | |
1968 | return; | |
1969 | p = *bsp; | |
1970 | while (p != NULL) | |
1971 | { | |
1972 | q = p->next; | |
198757a8 | 1973 | bpstat_free (p); |
c906108c SS |
1974 | p = q; |
1975 | } | |
1976 | *bsp = NULL; | |
1977 | } | |
1978 | ||
1979 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1980 | is part of the bpstat is copied as well. */ | |
1981 | ||
1982 | bpstat | |
fba45db2 | 1983 | bpstat_copy (bpstat bs) |
c906108c SS |
1984 | { |
1985 | bpstat p = NULL; | |
1986 | bpstat tmp; | |
1987 | bpstat retval = NULL; | |
1988 | ||
1989 | if (bs == NULL) | |
1990 | return bs; | |
1991 | ||
1992 | for (; bs != NULL; bs = bs->next) | |
1993 | { | |
1994 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1995 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1996 | if (bs->commands != NULL) |
1997 | tmp->commands = copy_command_lines (bs->commands); | |
1998 | if (bs->old_val != NULL) | |
1999 | tmp->old_val = value_copy (bs->old_val); | |
2000 | ||
c906108c SS |
2001 | if (p == NULL) |
2002 | /* This is the first thing in the chain. */ | |
2003 | retval = tmp; | |
2004 | else | |
2005 | p->next = tmp; | |
2006 | p = tmp; | |
2007 | } | |
2008 | p->next = NULL; | |
2009 | return retval; | |
2010 | } | |
2011 | ||
2012 | /* Find the bpstat associated with this breakpoint */ | |
2013 | ||
2014 | bpstat | |
fba45db2 | 2015 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2016 | { |
c5aa993b JM |
2017 | if (bsp == NULL) |
2018 | return NULL; | |
c906108c | 2019 | |
c5aa993b JM |
2020 | for (; bsp != NULL; bsp = bsp->next) |
2021 | { | |
4f8d1dc6 | 2022 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2023 | return bsp; |
2024 | } | |
c906108c SS |
2025 | return NULL; |
2026 | } | |
2027 | ||
2028 | /* Find a step_resume breakpoint associated with this bpstat. | |
2029 | (If there are multiple step_resume bp's on the list, this function | |
2030 | will arbitrarily pick one.) | |
2031 | ||
2032 | It is an error to use this function if BPSTAT doesn't contain a | |
2033 | step_resume breakpoint. | |
2034 | ||
2035 | See wait_for_inferior's use of this function. */ | |
2036 | struct breakpoint * | |
fba45db2 | 2037 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2038 | { |
8601f500 MS |
2039 | int current_thread; |
2040 | ||
8a3fe4f8 | 2041 | gdb_assert (bsp != NULL); |
c906108c | 2042 | |
8601f500 MS |
2043 | current_thread = pid_to_thread_id (inferior_ptid); |
2044 | ||
c906108c SS |
2045 | for (; bsp != NULL; bsp = bsp->next) |
2046 | { | |
2047 | if ((bsp->breakpoint_at != NULL) && | |
4f8d1dc6 VP |
2048 | (bsp->breakpoint_at->owner->type == bp_step_resume) && |
2049 | (bsp->breakpoint_at->owner->thread == current_thread || | |
2050 | bsp->breakpoint_at->owner->thread == -1)) | |
2051 | return bsp->breakpoint_at->owner; | |
c906108c SS |
2052 | } |
2053 | ||
8a3fe4f8 | 2054 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2055 | } |
2056 | ||
2057 | ||
8671a17b | 2058 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2059 | at. *BSP upon return is a bpstat which points to the remaining |
2060 | breakpoints stopped at (but which is not guaranteed to be good for | |
2061 | anything but further calls to bpstat_num). | |
8671a17b PA |
2062 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2063 | Return -1 if stopped at a breakpoint that has been deleted since | |
2064 | we set it. | |
2065 | Return 1 otherwise. */ | |
c906108c SS |
2066 | |
2067 | int | |
8671a17b | 2068 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2069 | { |
2070 | struct breakpoint *b; | |
2071 | ||
2072 | if ((*bsp) == NULL) | |
2073 | return 0; /* No more breakpoint values */ | |
8671a17b | 2074 | |
4f8d1dc6 VP |
2075 | /* We assume we'll never have several bpstats that |
2076 | correspond to a single breakpoint -- otherwise, | |
2077 | this function might return the same number more | |
2078 | than once and this will look ugly. */ | |
2079 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2080 | *bsp = (*bsp)->next; |
2081 | if (b == NULL) | |
2082 | return -1; /* breakpoint that's been deleted since */ | |
2083 | ||
2084 | *num = b->number; /* We have its number */ | |
2085 | return 1; | |
c906108c SS |
2086 | } |
2087 | ||
2088 | /* Modify BS so that the actions will not be performed. */ | |
2089 | ||
2090 | void | |
fba45db2 | 2091 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2092 | { |
2093 | for (; bs != NULL; bs = bs->next) | |
2094 | { | |
c2b8ed2c | 2095 | free_command_lines (&bs->commands); |
c906108c SS |
2096 | if (bs->old_val != NULL) |
2097 | { | |
2098 | value_free (bs->old_val); | |
2099 | bs->old_val = NULL; | |
2100 | } | |
2101 | } | |
2102 | } | |
2103 | ||
2104 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2105 | static void |
4efb68b1 | 2106 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2107 | { |
2108 | executing_breakpoint_commands = 0; | |
2109 | } | |
2110 | ||
2111 | /* Execute all the commands associated with all the breakpoints at this | |
2112 | location. Any of these commands could cause the process to proceed | |
2113 | beyond this point, etc. We look out for such changes by checking | |
2114 | the global "breakpoint_proceeded" after each command. */ | |
2115 | ||
2116 | void | |
fba45db2 | 2117 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2118 | { |
2119 | bpstat bs; | |
2120 | struct cleanup *old_chain; | |
c906108c SS |
2121 | |
2122 | /* Avoid endless recursion if a `source' command is contained | |
2123 | in bs->commands. */ | |
2124 | if (executing_breakpoint_commands) | |
2125 | return; | |
2126 | ||
2127 | executing_breakpoint_commands = 1; | |
2128 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2129 | ||
2130 | top: | |
2131 | /* Note that (as of this writing), our callers all appear to | |
2132 | be passing us the address of global stop_bpstat. And, if | |
2133 | our calls to execute_control_command cause the inferior to | |
2134 | proceed, that global (and hence, *bsp) will change. | |
2135 | ||
2136 | We must be careful to not touch *bsp unless the inferior | |
2137 | has not proceeded. */ | |
2138 | ||
2139 | /* This pointer will iterate over the list of bpstat's. */ | |
2140 | bs = *bsp; | |
2141 | ||
2142 | breakpoint_proceeded = 0; | |
2143 | for (; bs != NULL; bs = bs->next) | |
2144 | { | |
6c50ab1c JB |
2145 | struct command_line *cmd; |
2146 | struct cleanup *this_cmd_tree_chain; | |
2147 | ||
2148 | /* Take ownership of the BSP's command tree, if it has one. | |
2149 | ||
2150 | The command tree could legitimately contain commands like | |
2151 | 'step' and 'next', which call clear_proceed_status, which | |
2152 | frees stop_bpstat's command tree. To make sure this doesn't | |
2153 | free the tree we're executing out from under us, we need to | |
2154 | take ownership of the tree ourselves. Since a given bpstat's | |
2155 | commands are only executed once, we don't need to copy it; we | |
2156 | can clear the pointer in the bpstat, and make sure we free | |
2157 | the tree when we're done. */ | |
c906108c | 2158 | cmd = bs->commands; |
6c50ab1c JB |
2159 | bs->commands = 0; |
2160 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2161 | ||
c906108c SS |
2162 | while (cmd != NULL) |
2163 | { | |
2164 | execute_control_command (cmd); | |
2165 | ||
2166 | if (breakpoint_proceeded) | |
2167 | break; | |
2168 | else | |
2169 | cmd = cmd->next; | |
2170 | } | |
6c50ab1c JB |
2171 | |
2172 | /* We can free this command tree now. */ | |
2173 | do_cleanups (this_cmd_tree_chain); | |
2174 | ||
c906108c | 2175 | if (breakpoint_proceeded) |
32c1e744 VP |
2176 | { |
2177 | if (target_can_async_p ()) | |
2178 | /* If we are in async mode, then the target might | |
2179 | be still running, not stopped at any breakpoint, | |
2180 | so nothing for us to do here -- just return to | |
2181 | the event loop. */ | |
2182 | break; | |
2183 | else | |
2184 | /* In sync mode, when execute_control_command returns | |
2185 | we're already standing on the next breakpoint. | |
2186 | Breakpoint commands for that stop were not run, | |
2187 | since execute_command does not run breakpoint | |
2188 | commands -- only command_line_handler does, but | |
2189 | that one is not involved in execution of breakpoint | |
2190 | commands. So, we can now execute breakpoint commands. | |
2191 | There's an implicit assumption that we're called with | |
2192 | stop_bpstat, so our parameter is the new bpstat to | |
2193 | handle. | |
2194 | It should be noted that making execute_command do | |
2195 | bpstat actions is not an option -- in this case we'll | |
2196 | have recursive invocation of bpstat for each breakpoint | |
2197 | with a command, and can easily blow up GDB stack. */ | |
2198 | goto top; | |
2199 | } | |
c906108c | 2200 | } |
c2b8ed2c | 2201 | do_cleanups (old_chain); |
c906108c SS |
2202 | } |
2203 | ||
fa4727a6 DJ |
2204 | /* Print out the (old or new) value associated with a watchpoint. */ |
2205 | ||
2206 | static void | |
2207 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2208 | { | |
2209 | if (val == NULL) | |
2210 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2211 | else | |
2212 | value_print (val, stream, 0, Val_pretty_default); | |
2213 | } | |
2214 | ||
e514a9d6 | 2215 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2216 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2217 | by having it set different print_it values. |
2218 | ||
2219 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2220 | through the bpstat list of things causing this stop, calling the | |
2221 | print_bp_stop_message function on each one. The behavior of the | |
2222 | print_bp_stop_message function depends on the print_it field of | |
2223 | bpstat. If such field so indicates, call this function here. | |
2224 | ||
2225 | Return values from this routine (ultimately used by bpstat_print() | |
2226 | and normal_stop() to decide what to do): | |
2227 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2228 | don't print anything else. | |
2229 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2230 | that something to be followed by a location. | |
2231 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2232 | that something to be followed by a location. | |
2233 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2234 | analysis. */ | |
c906108c | 2235 | |
917317f4 | 2236 | static enum print_stop_action |
fba45db2 | 2237 | print_it_typical (bpstat bs) |
c906108c | 2238 | { |
3b31d625 | 2239 | struct cleanup *old_chain, *ui_out_chain; |
4f8d1dc6 | 2240 | struct breakpoint *b; |
89f9893c | 2241 | const struct bp_location *bl; |
8b93c638 | 2242 | struct ui_stream *stb; |
2cec12e5 | 2243 | int bp_temp = 0; |
8b93c638 | 2244 | stb = ui_out_stream_new (uiout); |
b02eeafb | 2245 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2246 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2247 | which has since been deleted. */ | |
e514a9d6 | 2248 | if (bs->breakpoint_at == NULL) |
917317f4 | 2249 | return PRINT_UNKNOWN; |
0d381245 VP |
2250 | bl = bs->breakpoint_at; |
2251 | b = bl->owner; | |
c906108c | 2252 | |
4f8d1dc6 | 2253 | switch (b->type) |
c906108c | 2254 | { |
e514a9d6 JM |
2255 | case bp_breakpoint: |
2256 | case bp_hardware_breakpoint: | |
2cec12e5 | 2257 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2258 | if (bl->address != bl->requested_address) |
2259 | breakpoint_adjustment_warning (bl->requested_address, | |
2260 | bl->address, | |
4f8d1dc6 VP |
2261 | b->number, 1); |
2262 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2263 | if (bp_temp) |
2264 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2265 | else | |
2266 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2267 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2268 | { |
2269 | ui_out_field_string (uiout, "reason", | |
2270 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2271 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2272 | } | |
4f8d1dc6 | 2273 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 JM |
2274 | ui_out_text (uiout, ", "); |
2275 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2276 | break; |
2277 | ||
2278 | case bp_shlib_event: | |
917317f4 JM |
2279 | /* Did we stop because the user set the stop_on_solib_events |
2280 | variable? (If so, we report this as a generic, "Stopped due | |
2281 | to shlib event" message.) */ | |
a3f17187 | 2282 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2283 | return PRINT_NOTHING; |
2284 | break; | |
2285 | ||
c4093a6a JM |
2286 | case bp_thread_event: |
2287 | /* Not sure how we will get here. | |
2288 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2289 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2290 | return PRINT_NOTHING; |
2291 | break; | |
2292 | ||
1900040c MS |
2293 | case bp_overlay_event: |
2294 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2295 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2296 | return PRINT_NOTHING; |
2297 | break; | |
2298 | ||
e514a9d6 | 2299 | case bp_catch_load: |
4f8d1dc6 | 2300 | annotate_catchpoint (b->number); |
a3f17187 | 2301 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
4f8d1dc6 VP |
2302 | b->number, |
2303 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2304 | return PRINT_SRC_AND_LOC; |
2305 | break; | |
2306 | ||
2307 | case bp_catch_unload: | |
4f8d1dc6 | 2308 | annotate_catchpoint (b->number); |
a3f17187 | 2309 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
4f8d1dc6 VP |
2310 | b->number, |
2311 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2312 | return PRINT_SRC_AND_LOC; |
2313 | break; | |
2314 | ||
2315 | case bp_catch_fork: | |
4f8d1dc6 | 2316 | annotate_catchpoint (b->number); |
a3f17187 | 2317 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), |
4f8d1dc6 VP |
2318 | b->number, |
2319 | b->forked_inferior_pid); | |
917317f4 | 2320 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2321 | break; |
2322 | ||
2323 | case bp_catch_vfork: | |
4f8d1dc6 | 2324 | annotate_catchpoint (b->number); |
a3f17187 | 2325 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), |
4f8d1dc6 VP |
2326 | b->number, |
2327 | b->forked_inferior_pid); | |
e514a9d6 JM |
2328 | return PRINT_SRC_AND_LOC; |
2329 | break; | |
2330 | ||
2331 | case bp_catch_exec: | |
4f8d1dc6 | 2332 | annotate_catchpoint (b->number); |
a3f17187 | 2333 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), |
4f8d1dc6 VP |
2334 | b->number, |
2335 | b->exec_pathname); | |
917317f4 | 2336 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2337 | break; |
2338 | ||
e514a9d6 JM |
2339 | case bp_watchpoint: |
2340 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2341 | annotate_watchpoint (b->number); |
2342 | if (ui_out_is_mi_like_p (uiout)) | |
2343 | ui_out_field_string | |
2344 | (uiout, "reason", | |
2345 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2346 | mention (b); | |
2347 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
2348 | ui_out_text (uiout, "\nOld value = "); | |
2349 | watchpoint_value_print (bs->old_val, stb->stream); | |
2350 | ui_out_field_stream (uiout, "old", stb); | |
2351 | ui_out_text (uiout, "\nNew value = "); | |
2352 | watchpoint_value_print (b->val, stb->stream); | |
2353 | ui_out_field_stream (uiout, "new", stb); | |
2354 | do_cleanups (ui_out_chain); | |
2355 | ui_out_text (uiout, "\n"); | |
e514a9d6 JM |
2356 | /* More than one watchpoint may have been triggered. */ |
2357 | return PRINT_UNKNOWN; | |
2358 | break; | |
2359 | ||
2360 | case bp_read_watchpoint: | |
9dc5e2a9 | 2361 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2362 | ui_out_field_string |
2363 | (uiout, "reason", | |
2364 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2365 | mention (b); |
3b31d625 | 2366 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2367 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2368 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2369 | ui_out_field_stream (uiout, "value", stb); |
3b31d625 | 2370 | do_cleanups (ui_out_chain); |
8b93c638 | 2371 | ui_out_text (uiout, "\n"); |
917317f4 | 2372 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2373 | break; |
2374 | ||
2375 | case bp_access_watchpoint: | |
fa4727a6 | 2376 | if (bs->old_val != NULL) |
8b93c638 | 2377 | { |
4f8d1dc6 | 2378 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2379 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2380 | ui_out_field_string |
2381 | (uiout, "reason", | |
2382 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2383 | mention (b); |
3b31d625 | 2384 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2385 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2386 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2387 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2388 | ui_out_text (uiout, "\nNew value = "); |
2389 | } | |
2390 | else | |
2391 | { | |
4f8d1dc6 | 2392 | mention (b); |
9dc5e2a9 | 2393 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2394 | ui_out_field_string |
2395 | (uiout, "reason", | |
2396 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2397 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2398 | ui_out_text (uiout, "\nValue = "); |
2399 | } | |
fa4727a6 | 2400 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2401 | ui_out_field_stream (uiout, "new", stb); |
3b31d625 | 2402 | do_cleanups (ui_out_chain); |
8b93c638 | 2403 | ui_out_text (uiout, "\n"); |
917317f4 | 2404 | return PRINT_UNKNOWN; |
e514a9d6 | 2405 | break; |
4ce44c66 | 2406 | |
e514a9d6 JM |
2407 | /* Fall through, we don't deal with these types of breakpoints |
2408 | here. */ | |
2409 | ||
11cf8741 | 2410 | case bp_finish: |
9dc5e2a9 | 2411 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2412 | ui_out_field_string |
2413 | (uiout, "reason", | |
2414 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2415 | return PRINT_UNKNOWN; |
2416 | break; | |
2417 | ||
e514a9d6 | 2418 | case bp_until: |
9dc5e2a9 | 2419 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2420 | ui_out_field_string |
2421 | (uiout, "reason", | |
2422 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2423 | return PRINT_UNKNOWN; |
2424 | break; | |
2425 | ||
c2d11a7d | 2426 | case bp_none: |
e514a9d6 JM |
2427 | case bp_longjmp: |
2428 | case bp_longjmp_resume: | |
2429 | case bp_step_resume: | |
e514a9d6 JM |
2430 | case bp_watchpoint_scope: |
2431 | case bp_call_dummy: | |
2432 | default: | |
2433 | return PRINT_UNKNOWN; | |
2434 | } | |
2435 | } | |
2436 | ||
2437 | /* Generic routine for printing messages indicating why we | |
2438 | stopped. The behavior of this function depends on the value | |
2439 | 'print_it' in the bpstat structure. Under some circumstances we | |
2440 | may decide not to print anything here and delegate the task to | |
2441 | normal_stop(). */ | |
2442 | ||
2443 | static enum print_stop_action | |
2444 | print_bp_stop_message (bpstat bs) | |
2445 | { | |
2446 | switch (bs->print_it) | |
2447 | { | |
2448 | case print_it_noop: | |
2449 | /* Nothing should be printed for this bpstat entry. */ | |
2450 | return PRINT_UNKNOWN; | |
2451 | break; | |
2452 | ||
2453 | case print_it_done: | |
2454 | /* We still want to print the frame, but we already printed the | |
2455 | relevant messages. */ | |
2456 | return PRINT_SRC_AND_LOC; | |
2457 | break; | |
2458 | ||
2459 | case print_it_normal: | |
4f8d1dc6 | 2460 | { |
89f9893c | 2461 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2462 | struct breakpoint *b = bl ? bl->owner : NULL; |
2463 | ||
2464 | /* Normal case. Call the breakpoint's print_it method, or | |
2465 | print_it_typical. */ | |
2466 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2467 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2468 | return b->ops->print_it (b); | |
2469 | else | |
2470 | return print_it_typical (bs); | |
2471 | } | |
2472 | break; | |
3086aeae | 2473 | |
e514a9d6 | 2474 | default: |
8e65ff28 | 2475 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2476 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2477 | break; |
c906108c | 2478 | } |
c906108c SS |
2479 | } |
2480 | ||
e514a9d6 JM |
2481 | /* Print a message indicating what happened. This is called from |
2482 | normal_stop(). The input to this routine is the head of the bpstat | |
2483 | list - a list of the eventpoints that caused this stop. This | |
2484 | routine calls the generic print routine for printing a message | |
2485 | about reasons for stopping. This will print (for example) the | |
2486 | "Breakpoint n," part of the output. The return value of this | |
2487 | routine is one of: | |
c906108c | 2488 | |
917317f4 JM |
2489 | PRINT_UNKNOWN: Means we printed nothing |
2490 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2491 | code to print the location. An example is |
2492 | "Breakpoint 1, " which should be followed by | |
2493 | the location. | |
917317f4 | 2494 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2495 | to also print the location part of the message. |
2496 | An example is the catch/throw messages, which | |
917317f4 JM |
2497 | don't require a location appended to the end. |
2498 | PRINT_NOTHING: We have done some printing and we don't need any | |
2499 | further info to be printed.*/ | |
c906108c | 2500 | |
917317f4 | 2501 | enum print_stop_action |
fba45db2 | 2502 | bpstat_print (bpstat bs) |
c906108c SS |
2503 | { |
2504 | int val; | |
c5aa993b | 2505 | |
c906108c | 2506 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2507 | (Currently all watchpoints go on the bpstat whether hit or not. |
2508 | That probably could (should) be changed, provided care is taken | |
c906108c | 2509 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2510 | for (; bs; bs = bs->next) |
2511 | { | |
2512 | val = print_bp_stop_message (bs); | |
2513 | if (val == PRINT_SRC_ONLY | |
2514 | || val == PRINT_SRC_AND_LOC | |
2515 | || val == PRINT_NOTHING) | |
2516 | return val; | |
2517 | } | |
c906108c | 2518 | |
e514a9d6 JM |
2519 | /* We reached the end of the chain, or we got a null BS to start |
2520 | with and nothing was printed. */ | |
917317f4 | 2521 | return PRINT_UNKNOWN; |
c906108c SS |
2522 | } |
2523 | ||
2524 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2525 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2526 | The argument is a "struct expression *" that has been cast to char * to | |
2527 | make it pass through catch_errors. */ | |
2528 | ||
2529 | static int | |
4efb68b1 | 2530 | breakpoint_cond_eval (void *exp) |
c906108c | 2531 | { |
278cd55f | 2532 | struct value *mark = value_mark (); |
c5aa993b | 2533 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2534 | value_free_to_mark (mark); |
2535 | return i; | |
2536 | } | |
2537 | ||
2538 | /* Allocate a new bpstat and chain it to the current one. */ | |
2539 | ||
2540 | static bpstat | |
89f9893c | 2541 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2542 | { |
2543 | bpstat bs; | |
2544 | ||
2545 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2546 | cbs->next = bs; | |
4f8d1dc6 | 2547 | bs->breakpoint_at = bl; |
c906108c SS |
2548 | /* If the condition is false, etc., don't do the commands. */ |
2549 | bs->commands = NULL; | |
2550 | bs->old_val = NULL; | |
2551 | bs->print_it = print_it_normal; | |
2552 | return bs; | |
2553 | } | |
2554 | \f | |
d983da9c DJ |
2555 | /* The target has stopped with waitstatus WS. Check if any hardware |
2556 | watchpoints have triggered, according to the target. */ | |
2557 | ||
2558 | int | |
2559 | watchpoints_triggered (struct target_waitstatus *ws) | |
2560 | { | |
2561 | int stopped_by_watchpoint = STOPPED_BY_WATCHPOINT (*ws); | |
2562 | CORE_ADDR addr; | |
2563 | struct breakpoint *b; | |
2564 | ||
2565 | if (!stopped_by_watchpoint) | |
2566 | { | |
2567 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2568 | as not triggered. */ | |
2569 | ALL_BREAKPOINTS (b) | |
2570 | if (b->type == bp_hardware_watchpoint | |
2571 | || b->type == bp_read_watchpoint | |
2572 | || b->type == bp_access_watchpoint) | |
2573 | b->watchpoint_triggered = watch_triggered_no; | |
2574 | ||
2575 | return 0; | |
2576 | } | |
2577 | ||
2578 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2579 | { | |
2580 | /* We were stopped by a watchpoint, but we don't know where. | |
2581 | Mark all watchpoints as unknown. */ | |
2582 | ALL_BREAKPOINTS (b) | |
2583 | if (b->type == bp_hardware_watchpoint | |
2584 | || b->type == bp_read_watchpoint | |
2585 | || b->type == bp_access_watchpoint) | |
2586 | b->watchpoint_triggered = watch_triggered_unknown; | |
2587 | ||
2588 | return stopped_by_watchpoint; | |
2589 | } | |
2590 | ||
2591 | /* The target could report the data address. Mark watchpoints | |
2592 | affected by this data address as triggered, and all others as not | |
2593 | triggered. */ | |
2594 | ||
2595 | ALL_BREAKPOINTS (b) | |
2596 | if (b->type == bp_hardware_watchpoint | |
2597 | || b->type == bp_read_watchpoint | |
2598 | || b->type == bp_access_watchpoint) | |
2599 | { | |
a5606eee | 2600 | struct bp_location *loc; |
d983da9c DJ |
2601 | struct value *v; |
2602 | ||
2603 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2604 | for (loc = b->loc; loc; loc = loc->next) |
2605 | /* Exact match not required. Within range is | |
2606 | sufficient. */ | |
5009afc5 AS |
2607 | if (target_watchpoint_addr_within_range (¤t_target, |
2608 | addr, loc->address, | |
2609 | loc->length)) | |
a5606eee VP |
2610 | { |
2611 | b->watchpoint_triggered = watch_triggered_yes; | |
2612 | break; | |
2613 | } | |
d983da9c DJ |
2614 | } |
2615 | ||
2616 | return 1; | |
2617 | } | |
2618 | ||
c906108c SS |
2619 | /* Possible return values for watchpoint_check (this can't be an enum |
2620 | because of check_errors). */ | |
2621 | /* The watchpoint has been deleted. */ | |
2622 | #define WP_DELETED 1 | |
2623 | /* The value has changed. */ | |
2624 | #define WP_VALUE_CHANGED 2 | |
2625 | /* The value has not changed. */ | |
2626 | #define WP_VALUE_NOT_CHANGED 3 | |
2627 | ||
2628 | #define BP_TEMPFLAG 1 | |
2629 | #define BP_HARDWAREFLAG 2 | |
2630 | ||
2631 | /* Check watchpoint condition. */ | |
2632 | ||
2633 | static int | |
4efb68b1 | 2634 | watchpoint_check (void *p) |
c906108c SS |
2635 | { |
2636 | bpstat bs = (bpstat) p; | |
2637 | struct breakpoint *b; | |
2638 | struct frame_info *fr; | |
2639 | int within_current_scope; | |
2640 | ||
4f8d1dc6 | 2641 | b = bs->breakpoint_at->owner; |
c906108c SS |
2642 | |
2643 | if (b->exp_valid_block == NULL) | |
2644 | within_current_scope = 1; | |
2645 | else | |
2646 | { | |
2647 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2648 | any chance of handling watchpoints on local variables, we'll need |
2649 | the frame chain (so we can determine if we're in scope). */ | |
2650 | reinit_frame_cache (); | |
101dcfbe | 2651 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2652 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2653 | |
2654 | /* If we've gotten confused in the unwinder, we might have | |
2655 | returned a frame that can't describe this variable. */ | |
2656 | if (within_current_scope | |
2657 | && block_function (b->exp_valid_block) != get_frame_function (fr)) | |
2658 | within_current_scope = 0; | |
2659 | ||
c12260ac CV |
2660 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2661 | in the function but the stack frame has already been invalidated. | |
2662 | Since we can't rely on the values of local variables after the | |
2663 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2664 | state as `not changed' without further checking. |
2665 | ||
2666 | vinschen/2003-09-04: The former implementation left out the case | |
2667 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2668 | because the current PC is currently in an epilogue. Calling | |
2669 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2670 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2671 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2672 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2673 | if (fr && within_current_scope) |
c906108c SS |
2674 | /* If we end up stopping, the current frame will get selected |
2675 | in normal_stop. So this call to select_frame won't affect | |
2676 | the user. */ | |
0f7d239c | 2677 | select_frame (fr); |
c906108c | 2678 | } |
c5aa993b | 2679 | |
c906108c SS |
2680 | if (within_current_scope) |
2681 | { | |
2682 | /* We use value_{,free_to_}mark because it could be a | |
2683 | *long* time before we return to the command level and | |
c5aa993b JM |
2684 | call free_all_values. We can't call free_all_values because |
2685 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2686 | |
278cd55f | 2687 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2688 | struct value *new_val; |
2689 | ||
2690 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2691 | if ((b->val != NULL) != (new_val != NULL) | |
2692 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2693 | { |
fa4727a6 DJ |
2694 | if (new_val != NULL) |
2695 | { | |
2696 | release_value (new_val); | |
2697 | value_free_to_mark (mark); | |
2698 | } | |
c906108c SS |
2699 | bs->old_val = b->val; |
2700 | b->val = new_val; | |
fa4727a6 | 2701 | b->val_valid = 1; |
c906108c SS |
2702 | /* We will stop here */ |
2703 | return WP_VALUE_CHANGED; | |
2704 | } | |
2705 | else | |
2706 | { | |
2707 | /* Nothing changed, don't do anything. */ | |
2708 | value_free_to_mark (mark); | |
2709 | /* We won't stop here */ | |
2710 | return WP_VALUE_NOT_CHANGED; | |
2711 | } | |
2712 | } | |
2713 | else | |
2714 | { | |
2715 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2716 | if we temporarily ignored the watchpoint, then when |
2717 | we reenter the block in which it is valid it contains | |
2718 | garbage (in the case of a function, it may have two | |
2719 | garbage values, one before and one after the prologue). | |
2720 | So we can't even detect the first assignment to it and | |
2721 | watch after that (since the garbage may or may not equal | |
2722 | the first value assigned). */ | |
4ce44c66 JM |
2723 | /* We print all the stop information in print_it_typical(), but |
2724 | in this case, by the time we call print_it_typical() this bp | |
2725 | will be deleted already. So we have no choice but print the | |
2726 | information here. */ | |
9dc5e2a9 | 2727 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2728 | ui_out_field_string |
2729 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2730 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2731 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2732 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2733 | which its expression is valid.\n"); | |
4ce44c66 | 2734 | |
c906108c | 2735 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2736 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2737 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2738 | |
2739 | return WP_DELETED; | |
2740 | } | |
2741 | } | |
2742 | ||
18a18393 VP |
2743 | /* Return true if it looks like target has stopped due to hitting |
2744 | breakpoint location BL. This function does not check if we | |
2745 | should stop, only if BL explains the stop. */ | |
2746 | static int | |
2747 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2748 | { | |
2749 | struct breakpoint *b = bl->owner; | |
2750 | ||
2751 | if (b->type != bp_watchpoint | |
2752 | && b->type != bp_hardware_watchpoint | |
2753 | && b->type != bp_read_watchpoint | |
2754 | && b->type != bp_access_watchpoint | |
2755 | && b->type != bp_hardware_breakpoint | |
2756 | && b->type != bp_catch_fork | |
2757 | && b->type != bp_catch_vfork | |
2758 | && b->type != bp_catch_exec) /* a non-watchpoint bp */ | |
2759 | { | |
2760 | if (bl->address != bp_addr) /* address doesn't match */ | |
2761 | return 0; | |
2762 | if (overlay_debugging /* unmapped overlay section */ | |
2763 | && section_is_overlay (bl->section) | |
2764 | && !section_is_mapped (bl->section)) | |
2765 | return 0; | |
2766 | } | |
2767 | ||
2768 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2769 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2770 | some data address). Otherwise gdb won't stop on a break instruction | |
2771 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2772 | been defined. Also skip watchpoints which we know did not trigger | |
2773 | (did not match the data address). */ | |
2774 | ||
2775 | if ((b->type == bp_hardware_watchpoint | |
2776 | || b->type == bp_read_watchpoint | |
2777 | || b->type == bp_access_watchpoint) | |
2778 | && b->watchpoint_triggered == watch_triggered_no) | |
2779 | return 0; | |
2780 | ||
2781 | if (b->type == bp_hardware_breakpoint) | |
2782 | { | |
2783 | if (bl->address != bp_addr) | |
2784 | return 0; | |
2785 | if (overlay_debugging /* unmapped overlay section */ | |
2786 | && section_is_overlay (bl->section) | |
2787 | && !section_is_mapped (bl->section)) | |
2788 | return 0; | |
2789 | } | |
2790 | ||
2791 | /* Is this a catchpoint of a load or unload? If so, did we | |
2792 | get a load or unload of the specified library? If not, | |
2793 | ignore it. */ | |
2794 | if ((b->type == bp_catch_load) | |
2795 | #if defined(SOLIB_HAVE_LOAD_EVENT) | |
2796 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) | |
2797 | || ((b->dll_pathname != NULL) | |
2798 | && (strcmp (b->dll_pathname, | |
2799 | SOLIB_LOADED_LIBRARY_PATHNAME ( | |
2800 | PIDGET (inferior_ptid))) | |
2801 | != 0))) | |
2802 | #endif | |
2803 | ) | |
2804 | return 0; | |
2805 | ||
2806 | if ((b->type == bp_catch_unload) | |
2807 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) | |
2808 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) | |
2809 | || ((b->dll_pathname != NULL) | |
2810 | && (strcmp (b->dll_pathname, | |
2811 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( | |
2812 | PIDGET (inferior_ptid))) | |
2813 | != 0))) | |
2814 | #endif | |
2815 | ) | |
2816 | return 0; | |
2817 | ||
2818 | if ((b->type == bp_catch_fork) | |
2819 | && !inferior_has_forked (PIDGET (inferior_ptid), | |
2820 | &b->forked_inferior_pid)) | |
2821 | return 0; | |
2822 | ||
2823 | if ((b->type == bp_catch_vfork) | |
2824 | && !inferior_has_vforked (PIDGET (inferior_ptid), | |
2825 | &b->forked_inferior_pid)) | |
2826 | return 0; | |
2827 | ||
2828 | if ((b->type == bp_catch_exec) | |
2829 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) | |
2830 | return 0; | |
2831 | ||
2832 | return 1; | |
2833 | } | |
2834 | ||
2835 | /* If BS refers to a watchpoint, determine if the watched values | |
2836 | has actually changed, and we should stop. If not, set BS->stop | |
2837 | to 0. */ | |
2838 | static void | |
2839 | bpstat_check_watchpoint (bpstat bs) | |
2840 | { | |
2841 | const struct bp_location *bl = bs->breakpoint_at; | |
2842 | struct breakpoint *b = bl->owner; | |
2843 | ||
2844 | if (b->type == bp_watchpoint | |
2845 | || b->type == bp_read_watchpoint | |
2846 | || b->type == bp_access_watchpoint | |
2847 | || b->type == bp_hardware_watchpoint) | |
2848 | { | |
2849 | CORE_ADDR addr; | |
2850 | struct value *v; | |
2851 | int must_check_value = 0; | |
2852 | ||
2853 | if (b->type == bp_watchpoint) | |
2854 | /* For a software watchpoint, we must always check the | |
2855 | watched value. */ | |
2856 | must_check_value = 1; | |
2857 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2858 | /* We have a hardware watchpoint (read, write, or access) | |
2859 | and the target earlier reported an address watched by | |
2860 | this watchpoint. */ | |
2861 | must_check_value = 1; | |
2862 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2863 | && b->type == bp_hardware_watchpoint) | |
2864 | /* We were stopped by a hardware watchpoint, but the target could | |
2865 | not report the data address. We must check the watchpoint's | |
2866 | value. Access and read watchpoints are out of luck; without | |
2867 | a data address, we can't figure it out. */ | |
2868 | must_check_value = 1; | |
2869 | ||
2870 | if (must_check_value) | |
2871 | { | |
2872 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2873 | b->number); | |
2874 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2875 | int e = catch_errors (watchpoint_check, bs, message, | |
2876 | RETURN_MASK_ALL); | |
2877 | do_cleanups (cleanups); | |
2878 | switch (e) | |
2879 | { | |
2880 | case WP_DELETED: | |
2881 | /* We've already printed what needs to be printed. */ | |
2882 | bs->print_it = print_it_done; | |
2883 | /* Stop. */ | |
2884 | break; | |
2885 | case WP_VALUE_CHANGED: | |
2886 | if (b->type == bp_read_watchpoint) | |
2887 | { | |
2888 | /* Don't stop: read watchpoints shouldn't fire if | |
2889 | the value has changed. This is for targets | |
2890 | which cannot set read-only watchpoints. */ | |
2891 | bs->print_it = print_it_noop; | |
2892 | bs->stop = 0; | |
2893 | } | |
2894 | break; | |
2895 | case WP_VALUE_NOT_CHANGED: | |
2896 | if (b->type == bp_hardware_watchpoint | |
2897 | || b->type == bp_watchpoint) | |
2898 | { | |
2899 | /* Don't stop: write watchpoints shouldn't fire if | |
2900 | the value hasn't changed. */ | |
2901 | bs->print_it = print_it_noop; | |
2902 | bs->stop = 0; | |
2903 | } | |
2904 | /* Stop. */ | |
2905 | break; | |
2906 | default: | |
2907 | /* Can't happen. */ | |
2908 | case 0: | |
2909 | /* Error from catch_errors. */ | |
2910 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2911 | if (b->related_breakpoint) | |
2912 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2913 | b->disposition = disp_del_at_next_stop; | |
2914 | /* We've already printed what needs to be printed. */ | |
2915 | bs->print_it = print_it_done; | |
2916 | break; | |
2917 | } | |
2918 | } | |
2919 | else /* must_check_value == 0 */ | |
2920 | { | |
2921 | /* This is a case where some watchpoint(s) triggered, but | |
2922 | not at the address of this watchpoint, or else no | |
2923 | watchpoint triggered after all. So don't print | |
2924 | anything for this watchpoint. */ | |
2925 | bs->print_it = print_it_noop; | |
2926 | bs->stop = 0; | |
2927 | } | |
2928 | } | |
2929 | } | |
2930 | ||
2931 | ||
2932 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2933 | of breakpoint referred to by BS. If we should not stop for this | |
2934 | breakpoint, set BS->stop to 0. */ | |
2935 | static void | |
2936 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
2937 | { | |
2938 | int thread_id = pid_to_thread_id (ptid); | |
2939 | const struct bp_location *bl = bs->breakpoint_at; | |
2940 | struct breakpoint *b = bl->owner; | |
2941 | ||
2942 | if (frame_id_p (b->frame_id) | |
2943 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
2944 | bs->stop = 0; | |
2945 | else if (bs->stop) | |
2946 | { | |
2947 | int value_is_zero = 0; | |
2948 | ||
2949 | /* If this is a scope breakpoint, mark the associated | |
2950 | watchpoint as triggered so that we will handle the | |
2951 | out-of-scope event. We'll get to the watchpoint next | |
2952 | iteration. */ | |
2953 | if (b->type == bp_watchpoint_scope) | |
2954 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
2955 | ||
2956 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
2957 | { | |
2958 | /* Need to select the frame, with all that implies | |
2959 | so that the conditions will have the right context. */ | |
2960 | select_frame (get_current_frame ()); | |
2961 | value_is_zero | |
2962 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
2963 | "Error in testing breakpoint condition:\n", | |
2964 | RETURN_MASK_ALL); | |
2965 | /* FIXME-someday, should give breakpoint # */ | |
2966 | free_all_values (); | |
2967 | } | |
2968 | if (bl->cond && value_is_zero) | |
2969 | { | |
2970 | bs->stop = 0; | |
2971 | } | |
2972 | else if (b->thread != -1 && b->thread != thread_id) | |
2973 | { | |
2974 | bs->stop = 0; | |
2975 | } | |
2976 | else if (b->ignore_count > 0) | |
2977 | { | |
2978 | b->ignore_count--; | |
2979 | annotate_ignore_count_change (); | |
2980 | bs->stop = 0; | |
2981 | /* Increase the hit count even though we don't | |
2982 | stop. */ | |
2983 | ++(b->hit_count); | |
2984 | } | |
2985 | } | |
2986 | } | |
2987 | ||
2988 | ||
9709f61c | 2989 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 2990 | BP_ADDR in thread PTID. |
c906108c | 2991 | |
d983da9c | 2992 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
2993 | don't understand this stop. Result is a chain of bpstat's such that: |
2994 | ||
c5aa993b | 2995 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2996 | |
c5aa993b | 2997 | if we understand why we stopped, the result is not null. |
c906108c | 2998 | |
c5aa993b JM |
2999 | Each element of the chain refers to a particular breakpoint or |
3000 | watchpoint at which we have stopped. (We may have stopped for | |
3001 | several reasons concurrently.) | |
c906108c | 3002 | |
c5aa993b JM |
3003 | Each element of the chain has valid next, breakpoint_at, |
3004 | commands, FIXME??? fields. */ | |
c906108c SS |
3005 | |
3006 | bpstat | |
d983da9c | 3007 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3008 | { |
0d381245 | 3009 | struct breakpoint *b = NULL; |
89f9893c | 3010 | const struct bp_location *bl; |
20874c92 | 3011 | struct bp_location *loc; |
c906108c SS |
3012 | /* Root of the chain of bpstat's */ |
3013 | struct bpstats root_bs[1]; | |
3014 | /* Pointer to the last thing in the chain currently. */ | |
3015 | bpstat bs = root_bs; | |
20874c92 | 3016 | int ix; |
c906108c | 3017 | |
0d381245 | 3018 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3019 | { |
0d381245 VP |
3020 | b = bl->owner; |
3021 | gdb_assert (b); | |
468d015d | 3022 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3023 | continue; |
3024 | ||
a5606eee VP |
3025 | /* For hardware watchpoints, we look only at the first location. |
3026 | The watchpoint_check function will work on entire expression, | |
3027 | not the individual locations. For read watchopints, the | |
3028 | watchpoints_triggered function have checked all locations | |
3029 | alrea | |
3030 | */ | |
3031 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3032 | continue; | |
3033 | ||
18a18393 VP |
3034 | if (!bpstat_check_location (bl, bp_addr)) |
3035 | continue; | |
3036 | ||
c5aa993b JM |
3037 | /* Come here if it's a watchpoint, or if the break address matches */ |
3038 | ||
0d381245 | 3039 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3040 | |
18a18393 VP |
3041 | /* Assume we stop. Should we find watchpoint that is not actually |
3042 | triggered, or if condition of breakpoint is false, we'll reset | |
3043 | 'stop' to 0. */ | |
c5aa993b JM |
3044 | bs->stop = 1; |
3045 | bs->print = 1; | |
3046 | ||
18a18393 VP |
3047 | bpstat_check_watchpoint (bs); |
3048 | if (!bs->stop) | |
3049 | continue; | |
c5aa993b | 3050 | |
18a18393 VP |
3051 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3052 | /* We do not stop for these. */ | |
c5aa993b JM |
3053 | bs->stop = 0; |
3054 | else | |
18a18393 VP |
3055 | bpstat_check_breakpoint_conditions (bs, ptid); |
3056 | ||
3057 | if (bs->stop) | |
c5aa993b | 3058 | { |
18a18393 | 3059 | ++(b->hit_count); |
d983da9c | 3060 | |
18a18393 VP |
3061 | /* We will stop here */ |
3062 | if (b->disposition == disp_disable) | |
c5aa993b | 3063 | { |
18a18393 VP |
3064 | b->enable_state = bp_disabled; |
3065 | update_global_location_list (); | |
c5aa993b | 3066 | } |
18a18393 VP |
3067 | if (b->silent) |
3068 | bs->print = 0; | |
3069 | bs->commands = b->commands; | |
3070 | if (bs->commands && | |
3071 | (strcmp ("silent", bs->commands->line) == 0 | |
3072 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3073 | { |
18a18393 VP |
3074 | bs->commands = bs->commands->next; |
3075 | bs->print = 0; | |
c5aa993b | 3076 | } |
18a18393 | 3077 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3078 | } |
18a18393 | 3079 | |
c5aa993b JM |
3080 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3081 | if (bs->stop == 0 || bs->print == 0) | |
3082 | bs->print_it = print_it_noop; | |
3083 | } | |
c906108c | 3084 | |
20874c92 VP |
3085 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3086 | { | |
3087 | if (loc->address == bp_addr) | |
3088 | { | |
3089 | bs = bpstat_alloc (loc, bs); | |
3090 | /* For hits of moribund locations, we should just proceed. */ | |
3091 | bs->stop = 0; | |
3092 | bs->print = 0; | |
3093 | bs->print_it = print_it_noop; | |
3094 | } | |
3095 | } | |
3096 | ||
c906108c SS |
3097 | bs->next = NULL; /* Terminate the chain */ |
3098 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3099 | ||
d983da9c DJ |
3100 | /* If we aren't stopping, the value of some hardware watchpoint may |
3101 | not have changed, but the intermediate memory locations we are | |
3102 | watching may have. Don't bother if we're stopping; this will get | |
3103 | done later. */ | |
3104 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3105 | if (bs->stop) | |
3106 | break; | |
3107 | ||
3108 | if (bs == NULL) | |
3109 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3110 | if (!bs->stop | |
20874c92 | 3111 | && bs->breakpoint_at->owner |
d983da9c DJ |
3112 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3113 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3114 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3115 | { | |
a5606eee VP |
3116 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3117 | location is no longer used by the watchpoint. Prevent | |
3118 | further code from trying to use it. */ | |
3119 | bs->breakpoint_at = NULL; | |
d983da9c DJ |
3120 | remove_breakpoints (); |
3121 | insert_breakpoints (); | |
3122 | break; | |
3123 | } | |
3124 | ||
3125 | return root_bs->next; | |
c906108c SS |
3126 | } |
3127 | \f | |
3128 | /* Tell what to do about this bpstat. */ | |
3129 | struct bpstat_what | |
fba45db2 | 3130 | bpstat_what (bpstat bs) |
c906108c SS |
3131 | { |
3132 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3133 | enum class |
3134 | { | |
3135 | /* This bpstat element has no effect on the main_action. */ | |
3136 | no_effect = 0, | |
3137 | ||
3138 | /* There was a watchpoint, stop but don't print. */ | |
3139 | wp_silent, | |
c906108c | 3140 | |
c5aa993b JM |
3141 | /* There was a watchpoint, stop and print. */ |
3142 | wp_noisy, | |
c906108c | 3143 | |
c5aa993b JM |
3144 | /* There was a breakpoint but we're not stopping. */ |
3145 | bp_nostop, | |
c906108c | 3146 | |
c5aa993b JM |
3147 | /* There was a breakpoint, stop but don't print. */ |
3148 | bp_silent, | |
c906108c | 3149 | |
c5aa993b JM |
3150 | /* There was a breakpoint, stop and print. */ |
3151 | bp_noisy, | |
c906108c | 3152 | |
c5aa993b JM |
3153 | /* We hit the longjmp breakpoint. */ |
3154 | long_jump, | |
c906108c | 3155 | |
c5aa993b JM |
3156 | /* We hit the longjmp_resume breakpoint. */ |
3157 | long_resume, | |
c906108c | 3158 | |
c5aa993b JM |
3159 | /* We hit the step_resume breakpoint. */ |
3160 | step_resume, | |
c906108c | 3161 | |
c5aa993b JM |
3162 | /* We hit the shared library event breakpoint. */ |
3163 | shlib_event, | |
c906108c | 3164 | |
c5aa993b JM |
3165 | /* We caught a shared library event. */ |
3166 | catch_shlib_event, | |
c906108c | 3167 | |
c5aa993b JM |
3168 | /* This is just used to count how many enums there are. */ |
3169 | class_last | |
c906108c SS |
3170 | }; |
3171 | ||
3172 | /* Here is the table which drives this routine. So that we can | |
3173 | format it pretty, we define some abbreviations for the | |
3174 | enum bpstat_what codes. */ | |
3175 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3176 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3177 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3178 | #define sgl BPSTAT_WHAT_SINGLE | |
3179 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3180 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3181 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c SS |
3182 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
3183 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3184 | ||
3185 | /* "Can't happen." Might want to print an error message. | |
3186 | abort() is not out of the question, but chances are GDB is just | |
3187 | a bit confused, not unusable. */ | |
3188 | #define err BPSTAT_WHAT_STOP_NOISY | |
3189 | ||
3190 | /* Given an old action and a class, come up with a new action. */ | |
3191 | /* One interesting property of this table is that wp_silent is the same | |
3192 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3193 | after stopping, the check for whether to step over a breakpoint | |
3194 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3195 | reference to how we stopped. We retain separate wp_silent and |
3196 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3197 | |
3198 | Another possibly interesting property of this table is that | |
3199 | there's a partial ordering, priority-like, of the actions. Once | |
3200 | you've decided that some action is appropriate, you'll never go | |
3201 | back and decide something of a lower priority is better. The | |
3202 | ordering is: | |
3203 | ||
4d5b2cd7 | 3204 | kc < clr sgl shl shlr slr sn sr ss |
78b6a731 | 3205 | sgl < shl shlr slr sn sr ss |
4d5b2cd7 | 3206 | slr < err shl shlr sn sr ss |
78b6a731 | 3207 | clr < err shl shlr sn sr ss |
4d5b2cd7 DJ |
3208 | ss < shl shlr sn sr |
3209 | sn < shl shlr sr | |
46d57086 DJ |
3210 | shl < shlr sr |
3211 | shlr < sr | |
4d5b2cd7 | 3212 | sr < |
c5aa993b | 3213 | |
43ff13b4 JM |
3214 | What I think this means is that we don't need a damned table |
3215 | here. If you just put the rows and columns in the right order, | |
3216 | it'd look awfully regular. We could simply walk the bpstat list | |
3217 | and choose the highest priority action we find, with a little | |
78b6a731 | 3218 | logic to handle the 'err' cases. */ |
c906108c SS |
3219 | |
3220 | /* step_resume entries: a step resume breakpoint overrides another | |
3221 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3222 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3223 | |
3224 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3225 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3226 | { | |
3227 | /* old action */ | |
78b6a731 | 3228 | /* kc ss sn sgl slr clr sr shl shlr |
c5aa993b JM |
3229 | */ |
3230 | /*no_effect */ | |
78b6a731 | 3231 | {kc, ss, sn, sgl, slr, clr, sr, shl, shlr}, |
c5aa993b | 3232 | /*wp_silent */ |
78b6a731 | 3233 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3234 | /*wp_noisy */ |
78b6a731 | 3235 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3236 | /*bp_nostop */ |
78b6a731 | 3237 | {sgl, ss, sn, sgl, slr, slr, sr, shl, shlr}, |
c5aa993b | 3238 | /*bp_silent */ |
78b6a731 | 3239 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3240 | /*bp_noisy */ |
78b6a731 | 3241 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3242 | /*long_jump */ |
78b6a731 | 3243 | {slr, ss, sn, slr, slr, err, sr, shl, shlr}, |
c5aa993b | 3244 | /*long_resume */ |
78b6a731 | 3245 | {clr, ss, sn, err, err, err, sr, shl, shlr}, |
c5aa993b | 3246 | /*step_resume */ |
78b6a731 | 3247 | {sr, sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3248 | /*shlib */ |
78b6a731 | 3249 | {shl, shl, shl, shl, shl, shl, sr, shl, shlr}, |
c5aa993b | 3250 | /*catch_shlib */ |
78b6a731 | 3251 | {shlr, shlr, shlr, shlr, shlr, shlr, sr, shlr, shlr} |
c5aa993b | 3252 | }; |
c906108c SS |
3253 | |
3254 | #undef kc | |
3255 | #undef ss | |
3256 | #undef sn | |
3257 | #undef sgl | |
3258 | #undef slr | |
3259 | #undef clr | |
c906108c SS |
3260 | #undef err |
3261 | #undef sr | |
3262 | #undef ts | |
3263 | #undef shl | |
3264 | #undef shlr | |
3265 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3266 | struct bpstat_what retval; | |
3267 | ||
3268 | retval.call_dummy = 0; | |
3269 | for (; bs != NULL; bs = bs->next) | |
3270 | { | |
3271 | enum class bs_class = no_effect; | |
3272 | if (bs->breakpoint_at == NULL) | |
3273 | /* I suspect this can happen if it was a momentary breakpoint | |
3274 | which has since been deleted. */ | |
3275 | continue; | |
20874c92 VP |
3276 | if (bs->breakpoint_at->owner == NULL) |
3277 | bs_class = bp_nostop; | |
3278 | else | |
4f8d1dc6 | 3279 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3280 | { |
3281 | case bp_none: | |
3282 | continue; | |
3283 | ||
3284 | case bp_breakpoint: | |
3285 | case bp_hardware_breakpoint: | |
3286 | case bp_until: | |
3287 | case bp_finish: | |
3288 | if (bs->stop) | |
3289 | { | |
3290 | if (bs->print) | |
3291 | bs_class = bp_noisy; | |
3292 | else | |
3293 | bs_class = bp_silent; | |
3294 | } | |
3295 | else | |
3296 | bs_class = bp_nostop; | |
3297 | break; | |
3298 | case bp_watchpoint: | |
3299 | case bp_hardware_watchpoint: | |
3300 | case bp_read_watchpoint: | |
3301 | case bp_access_watchpoint: | |
3302 | if (bs->stop) | |
3303 | { | |
3304 | if (bs->print) | |
3305 | bs_class = wp_noisy; | |
3306 | else | |
3307 | bs_class = wp_silent; | |
3308 | } | |
3309 | else | |
53a5351d JM |
3310 | /* There was a watchpoint, but we're not stopping. |
3311 | This requires no further action. */ | |
c906108c SS |
3312 | bs_class = no_effect; |
3313 | break; | |
3314 | case bp_longjmp: | |
3315 | bs_class = long_jump; | |
3316 | break; | |
3317 | case bp_longjmp_resume: | |
3318 | bs_class = long_resume; | |
3319 | break; | |
3320 | case bp_step_resume: | |
3321 | if (bs->stop) | |
3322 | { | |
3323 | bs_class = step_resume; | |
3324 | } | |
3325 | else | |
3326 | /* It is for the wrong frame. */ | |
3327 | bs_class = bp_nostop; | |
3328 | break; | |
c906108c SS |
3329 | case bp_watchpoint_scope: |
3330 | bs_class = bp_nostop; | |
3331 | break; | |
c5aa993b JM |
3332 | case bp_shlib_event: |
3333 | bs_class = shlib_event; | |
3334 | break; | |
c4093a6a | 3335 | case bp_thread_event: |
1900040c | 3336 | case bp_overlay_event: |
c4093a6a JM |
3337 | bs_class = bp_nostop; |
3338 | break; | |
c5aa993b JM |
3339 | case bp_catch_load: |
3340 | case bp_catch_unload: | |
3341 | /* Only if this catchpoint triggered should we cause the | |
3342 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3343 | catchpoint. */ | |
3344 | if (bs->stop) | |
3345 | bs_class = catch_shlib_event; | |
3346 | else | |
3347 | bs_class = no_effect; | |
3348 | break; | |
3349 | case bp_catch_fork: | |
3350 | case bp_catch_vfork: | |
3351 | case bp_catch_exec: | |
3352 | if (bs->stop) | |
3353 | { | |
3354 | if (bs->print) | |
3355 | bs_class = bp_noisy; | |
3356 | else | |
3357 | bs_class = bp_silent; | |
3358 | } | |
3359 | else | |
53a5351d JM |
3360 | /* There was a catchpoint, but we're not stopping. |
3361 | This requires no further action. */ | |
c5aa993b JM |
3362 | bs_class = no_effect; |
3363 | break; | |
c906108c | 3364 | case bp_call_dummy: |
53a5351d JM |
3365 | /* Make sure the action is stop (silent or noisy), |
3366 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3367 | bs_class = bp_silent; |
3368 | retval.call_dummy = 1; | |
3369 | break; | |
3370 | } | |
c5aa993b | 3371 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3372 | } |
3373 | retval.main_action = current_action; | |
3374 | return retval; | |
3375 | } | |
3376 | ||
3377 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3378 | without hardware support). This isn't related to a specific bpstat, | |
3379 | just to things like whether watchpoints are set. */ | |
3380 | ||
c5aa993b | 3381 | int |
fba45db2 | 3382 | bpstat_should_step (void) |
c906108c SS |
3383 | { |
3384 | struct breakpoint *b; | |
3385 | ALL_BREAKPOINTS (b) | |
468d015d | 3386 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3387 | return 1; |
c906108c SS |
3388 | return 0; |
3389 | } | |
3390 | ||
c906108c | 3391 | \f |
c5aa993b | 3392 | |
c906108c SS |
3393 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3394 | function returns another bpstat which contains only the catchpoints | |
3395 | on that first list, if any. */ | |
3396 | void | |
fba45db2 | 3397 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3398 | { |
3399 | struct bpstats root_bs[1]; | |
3400 | bpstat bs = root_bs; | |
3401 | struct breakpoint *ep; | |
3402 | char *dll_pathname; | |
3403 | ||
c906108c SS |
3404 | bpstat_clear (cp_list); |
3405 | root_bs->next = NULL; | |
c5aa993b JM |
3406 | |
3407 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3408 | { |
3409 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
4f8d1dc6 | 3410 | ep = ep_list->breakpoint_at->owner; |
c906108c | 3411 | if (ep == NULL) |
c5aa993b JM |
3412 | break; |
3413 | if ((ep->type != bp_catch_load) && | |
dfdfb3ca | 3414 | (ep->type != bp_catch_unload)) |
53a5351d | 3415 | /* pai: (temp) ADD fork/vfork here!! */ |
c5aa993b JM |
3416 | continue; |
3417 | ||
c906108c | 3418 | /* Yes; add it to the list. */ |
4f8d1dc6 | 3419 | bs = bpstat_alloc (ep_list->breakpoint_at, bs); |
c906108c SS |
3420 | *bs = *ep_list; |
3421 | bs->next = NULL; | |
3422 | bs = root_bs->next; | |
c5aa993b | 3423 | |
c906108c SS |
3424 | #if defined(SOLIB_ADD) |
3425 | /* Also, for each triggered catchpoint, tag it with the name of | |
3426 | the library that caused this trigger. (We copy the name now, | |
3427 | because it's only guaranteed to be available NOW, when the | |
3428 | catchpoint triggers. Clients who may wish to know the name | |
3429 | later must get it from the catchpoint itself.) */ | |
3430 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3431 | xfree (ep->triggered_dll_pathname); |
c906108c | 3432 | if (ep->type == bp_catch_load) |
39f77062 KB |
3433 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3434 | PIDGET (inferior_ptid)); | |
c906108c | 3435 | else |
39f77062 KB |
3436 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3437 | PIDGET (inferior_ptid)); | |
c906108c SS |
3438 | #else |
3439 | dll_pathname = NULL; | |
3440 | #endif | |
3441 | if (dll_pathname) | |
3442 | { | |
53a5351d JM |
3443 | ep->triggered_dll_pathname = (char *) |
3444 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3445 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3446 | } | |
3447 | else | |
3448 | ep->triggered_dll_pathname = NULL; | |
3449 | } | |
c5aa993b | 3450 | |
c906108c SS |
3451 | *cp_list = bs; |
3452 | } | |
3453 | ||
0d381245 VP |
3454 | static void print_breakpoint_location (struct breakpoint *b, |
3455 | struct bp_location *loc, | |
3456 | char *wrap_indent, | |
3457 | struct ui_stream *stb) | |
3458 | { | |
3459 | if (b->source_file) | |
3460 | { | |
3461 | struct symbol *sym | |
3462 | = find_pc_sect_function (loc->address, loc->section); | |
3463 | if (sym) | |
3464 | { | |
3465 | ui_out_text (uiout, "in "); | |
3466 | ui_out_field_string (uiout, "func", | |
3467 | SYMBOL_PRINT_NAME (sym)); | |
3468 | ui_out_wrap_hint (uiout, wrap_indent); | |
3469 | ui_out_text (uiout, " at "); | |
3470 | } | |
3471 | ui_out_field_string (uiout, "file", b->source_file); | |
3472 | ui_out_text (uiout, ":"); | |
3473 | ||
3474 | if (ui_out_is_mi_like_p (uiout)) | |
3475 | { | |
3476 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3477 | char *fullname = symtab_to_fullname (sal.symtab); | |
3478 | ||
3479 | if (fullname) | |
3480 | ui_out_field_string (uiout, "fullname", fullname); | |
3481 | } | |
3482 | ||
3483 | ui_out_field_int (uiout, "line", b->line_number); | |
3484 | } | |
3485 | else if (!b->loc) | |
3486 | { | |
3487 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3488 | } | |
3489 | else | |
3490 | { | |
3491 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3492 | ui_out_field_stream (uiout, "at", stb); | |
3493 | } | |
3494 | } | |
3495 | ||
c4093a6a | 3496 | /* Print B to gdb_stdout. */ |
c906108c | 3497 | static void |
0d381245 VP |
3498 | print_one_breakpoint_location (struct breakpoint *b, |
3499 | struct bp_location *loc, | |
3500 | int loc_number, | |
3501 | CORE_ADDR *last_addr) | |
c906108c | 3502 | { |
52f0bd74 AC |
3503 | struct command_line *l; |
3504 | struct symbol *sym; | |
c4093a6a JM |
3505 | struct ep_type_description |
3506 | { | |
3507 | enum bptype type; | |
3508 | char *description; | |
3509 | }; | |
3510 | static struct ep_type_description bptypes[] = | |
c906108c | 3511 | { |
c5aa993b JM |
3512 | {bp_none, "?deleted?"}, |
3513 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3514 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3515 | {bp_until, "until"}, |
3516 | {bp_finish, "finish"}, | |
3517 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3518 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3519 | {bp_read_watchpoint, "read watchpoint"}, |
3520 | {bp_access_watchpoint, "acc watchpoint"}, | |
3521 | {bp_longjmp, "longjmp"}, | |
3522 | {bp_longjmp_resume, "longjmp resume"}, | |
3523 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3524 | {bp_watchpoint_scope, "watchpoint scope"}, |
3525 | {bp_call_dummy, "call dummy"}, | |
3526 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3527 | {bp_thread_event, "thread events"}, |
1900040c | 3528 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3529 | {bp_catch_load, "catch load"}, |
3530 | {bp_catch_unload, "catch unload"}, | |
3531 | {bp_catch_fork, "catch fork"}, | |
3532 | {bp_catch_vfork, "catch vfork"}, | |
dfdfb3ca | 3533 | {bp_catch_exec, "catch exec"} |
c5aa993b | 3534 | }; |
c4093a6a | 3535 | |
c2c6d25f | 3536 | static char bpenables[] = "nynny"; |
c906108c | 3537 | char wrap_indent[80]; |
8b93c638 JM |
3538 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3539 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3540 | struct cleanup *bkpt_chain; |
c906108c | 3541 | |
0d381245 VP |
3542 | int header_of_multiple = 0; |
3543 | int part_of_multiple = (loc != NULL); | |
3544 | ||
3545 | gdb_assert (!loc || loc_number != 0); | |
3546 | /* See comment in print_one_breakpoint concerning | |
3547 | treatment of breakpoints with single disabled | |
3548 | location. */ | |
3549 | if (loc == NULL | |
3550 | && (b->loc != NULL | |
3551 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3552 | header_of_multiple = 1; | |
3553 | if (loc == NULL) | |
3554 | loc = b->loc; | |
3555 | ||
c4093a6a | 3556 | annotate_record (); |
3b31d625 | 3557 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3558 | |
3559 | /* 1 */ | |
3560 | annotate_field (0); | |
0d381245 VP |
3561 | if (part_of_multiple) |
3562 | { | |
3563 | char *formatted; | |
0c6773c1 | 3564 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3565 | ui_out_field_string (uiout, "number", formatted); |
3566 | xfree (formatted); | |
3567 | } | |
3568 | else | |
3569 | { | |
3570 | ui_out_field_int (uiout, "number", b->number); | |
3571 | } | |
c4093a6a JM |
3572 | |
3573 | /* 2 */ | |
3574 | annotate_field (1); | |
0d381245 VP |
3575 | if (part_of_multiple) |
3576 | ui_out_field_skip (uiout, "type"); | |
3577 | else | |
3578 | { | |
3579 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3580 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3581 | internal_error (__FILE__, __LINE__, | |
3582 | _("bptypes table does not describe type #%d."), | |
3583 | (int) b->type); | |
3584 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3585 | } | |
c4093a6a JM |
3586 | |
3587 | /* 3 */ | |
3588 | annotate_field (2); | |
0d381245 VP |
3589 | if (part_of_multiple) |
3590 | ui_out_field_skip (uiout, "disp"); | |
3591 | else | |
2cec12e5 | 3592 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3593 | |
c4093a6a JM |
3594 | |
3595 | /* 4 */ | |
3596 | annotate_field (3); | |
0d381245 | 3597 | if (part_of_multiple) |
54e52265 | 3598 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3599 | else |
54e52265 VP |
3600 | ui_out_field_fmt (uiout, "enabled", "%c", |
3601 | bpenables[(int) b->enable_state]); | |
3602 | ui_out_spaces (uiout, 2); | |
0d381245 | 3603 | |
c4093a6a JM |
3604 | |
3605 | /* 5 and 6 */ | |
3606 | strcpy (wrap_indent, " "); | |
3607 | if (addressprint) | |
75ac9d7b | 3608 | { |
17a912b6 | 3609 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3610 | strcat (wrap_indent, " "); |
3611 | else | |
3612 | strcat (wrap_indent, " "); | |
3613 | } | |
c906108c | 3614 | |
3086aeae | 3615 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3616 | { |
3617 | /* Although the print_one can possibly print | |
3618 | all locations, calling it here is not likely | |
3619 | to get any nice result. So, make sure there's | |
3620 | just one location. */ | |
3621 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3622 | b->ops->print_one (b, last_addr); | |
3623 | } | |
3086aeae DJ |
3624 | else |
3625 | switch (b->type) | |
3626 | { | |
3627 | case bp_none: | |
3628 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3629 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3630 | break; |
c906108c | 3631 | |
3086aeae DJ |
3632 | case bp_watchpoint: |
3633 | case bp_hardware_watchpoint: | |
3634 | case bp_read_watchpoint: | |
3635 | case bp_access_watchpoint: | |
3636 | /* Field 4, the address, is omitted (which makes the columns | |
3637 | not line up too nicely with the headers, but the effect | |
3638 | is relatively readable). */ | |
3639 | if (addressprint) | |
3640 | ui_out_field_skip (uiout, "addr"); | |
3641 | annotate_field (5); | |
3642 | print_expression (b->exp, stb->stream); | |
3643 | ui_out_field_stream (uiout, "what", stb); | |
3644 | break; | |
3645 | ||
3646 | case bp_catch_load: | |
3647 | case bp_catch_unload: | |
3648 | /* Field 4, the address, is omitted (which makes the columns | |
3649 | not line up too nicely with the headers, but the effect | |
3650 | is relatively readable). */ | |
3651 | if (addressprint) | |
3652 | ui_out_field_skip (uiout, "addr"); | |
3653 | annotate_field (5); | |
3654 | if (b->dll_pathname == NULL) | |
3655 | { | |
3656 | ui_out_field_string (uiout, "what", "<any library>"); | |
3657 | ui_out_spaces (uiout, 1); | |
3658 | } | |
3659 | else | |
3660 | { | |
3661 | ui_out_text (uiout, "library \""); | |
3662 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3663 | ui_out_text (uiout, "\" "); | |
3664 | } | |
3665 | break; | |
3666 | ||
3667 | case bp_catch_fork: | |
3668 | case bp_catch_vfork: | |
3669 | /* Field 4, the address, is omitted (which makes the columns | |
3670 | not line up too nicely with the headers, but the effect | |
3671 | is relatively readable). */ | |
3672 | if (addressprint) | |
3673 | ui_out_field_skip (uiout, "addr"); | |
3674 | annotate_field (5); | |
3675 | if (b->forked_inferior_pid != 0) | |
3676 | { | |
3677 | ui_out_text (uiout, "process "); | |
3678 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3679 | ui_out_spaces (uiout, 1); | |
3680 | } | |
0f699bbe | 3681 | break; |
3086aeae DJ |
3682 | |
3683 | case bp_catch_exec: | |
3684 | /* Field 4, the address, is omitted (which makes the columns | |
3685 | not line up too nicely with the headers, but the effect | |
3686 | is relatively readable). */ | |
3687 | if (addressprint) | |
3688 | ui_out_field_skip (uiout, "addr"); | |
3689 | annotate_field (5); | |
3690 | if (b->exec_pathname != NULL) | |
3691 | { | |
3692 | ui_out_text (uiout, "program \""); | |
3693 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3694 | ui_out_text (uiout, "\" "); | |
3695 | } | |
3696 | break; | |
3697 | ||
3086aeae DJ |
3698 | case bp_breakpoint: |
3699 | case bp_hardware_breakpoint: | |
3700 | case bp_until: | |
3701 | case bp_finish: | |
3702 | case bp_longjmp: | |
3703 | case bp_longjmp_resume: | |
3704 | case bp_step_resume: | |
3086aeae DJ |
3705 | case bp_watchpoint_scope: |
3706 | case bp_call_dummy: | |
3707 | case bp_shlib_event: | |
3708 | case bp_thread_event: | |
3709 | case bp_overlay_event: | |
3710 | if (addressprint) | |
3711 | { | |
3712 | annotate_field (4); | |
54e52265 | 3713 | if (header_of_multiple) |
0d381245 | 3714 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3715 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3716 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3717 | else |
0d381245 | 3718 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3719 | } |
3720 | annotate_field (5); | |
0d381245 VP |
3721 | if (!header_of_multiple) |
3722 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3723 | if (b->loc) | |
3724 | *last_addr = b->loc->address; | |
3086aeae DJ |
3725 | break; |
3726 | } | |
c906108c | 3727 | |
0d381245 | 3728 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 3729 | { |
8b93c638 JM |
3730 | /* FIXME: This seems to be redundant and lost here; see the |
3731 | "stop only in" line a little further down. */ | |
3732 | ui_out_text (uiout, " thread "); | |
3733 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3734 | } |
3735 | ||
8b93c638 | 3736 | ui_out_text (uiout, "\n"); |
c4093a6a | 3737 | |
0d381245 | 3738 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3739 | { |
3740 | annotate_field (6); | |
8b93c638 | 3741 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3742 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3743 | the frame ID. */ | |
d0a55772 | 3744 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3745 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3746 | } |
3747 | ||
0d381245 | 3748 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3749 | { |
f7f9143b JB |
3750 | /* We do not print the condition for Ada exception catchpoints |
3751 | because the condition is an internal implementation detail | |
3752 | that we do not want to expose to the user. */ | |
c4093a6a | 3753 | annotate_field (7); |
8b93c638 | 3754 | ui_out_text (uiout, "\tstop only if "); |
0101ce28 JJ |
3755 | ui_out_field_string (uiout, "cond", b->cond_string); |
3756 | ui_out_text (uiout, "\n"); | |
3757 | } | |
3758 | ||
0d381245 | 3759 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3760 | { |
3761 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3762 | ui_out_text (uiout, "\tstop only in thread "); |
3763 | ui_out_field_int (uiout, "thread", b->thread); | |
3764 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3765 | } |
3766 | ||
0d381245 | 3767 | if (!part_of_multiple && show_breakpoint_hit_counts && b->hit_count) |
c4093a6a JM |
3768 | { |
3769 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3770 | if (ep_is_catchpoint (b)) |
3771 | ui_out_text (uiout, "\tcatchpoint"); | |
3772 | else | |
3773 | ui_out_text (uiout, "\tbreakpoint"); | |
3774 | ui_out_text (uiout, " already hit "); | |
3775 | ui_out_field_int (uiout, "times", b->hit_count); | |
3776 | if (b->hit_count == 1) | |
3777 | ui_out_text (uiout, " time\n"); | |
3778 | else | |
3779 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3780 | } |
3781 | ||
fb40c209 AC |
3782 | /* Output the count also if it is zero, but only if this is |
3783 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3784 | if (ui_out_is_mi_like_p (uiout)) |
0d381245 | 3785 | if (!part_of_multiple && show_breakpoint_hit_counts && b->hit_count == 0) |
fb40c209 | 3786 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3787 | |
0d381245 | 3788 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3789 | { |
3790 | annotate_field (8); | |
8b93c638 JM |
3791 | ui_out_text (uiout, "\tignore next "); |
3792 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3793 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3794 | } |
3795 | ||
0d381245 | 3796 | if (!part_of_multiple && (l = b->commands)) |
c4093a6a | 3797 | { |
3b31d625 EZ |
3798 | struct cleanup *script_chain; |
3799 | ||
c4093a6a | 3800 | annotate_field (9); |
3b31d625 | 3801 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3802 | print_command_lines (uiout, l, 4); |
3b31d625 | 3803 | do_cleanups (script_chain); |
c4093a6a | 3804 | } |
d24317b4 VP |
3805 | |
3806 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) | |
3807 | { | |
3808 | if (b->addr_string) | |
3809 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3810 | else if (b->exp_string) | |
3811 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3812 | } | |
3813 | ||
3b31d625 | 3814 | do_cleanups (bkpt_chain); |
8b93c638 | 3815 | do_cleanups (old_chain); |
c4093a6a | 3816 | } |
c5aa993b | 3817 | |
0d381245 VP |
3818 | static void |
3819 | print_one_breakpoint (struct breakpoint *b, | |
3820 | CORE_ADDR *last_addr) | |
3821 | { | |
3822 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3823 | ||
3824 | /* If this breakpoint has custom print function, | |
3825 | it's already printed. Otherwise, print individual | |
3826 | locations, if any. */ | |
3827 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3828 | { | |
3829 | /* If breakpoint has a single location that is | |
3830 | disabled, we print it as if it had | |
3831 | several locations, since otherwise it's hard to | |
3832 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3833 | situation. |
3834 | Note that while hardware watchpoints have | |
3835 | several locations internally, that's no a property | |
3836 | exposed to user. */ | |
0d381245 | 3837 | if (b->loc |
a5606eee | 3838 | && !is_hardware_watchpoint (b) |
0d381245 | 3839 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3840 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3841 | { |
3842 | struct bp_location *loc; | |
3843 | int n = 1; | |
3844 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3845 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3846 | } | |
3847 | } | |
3848 | } | |
3849 | ||
3850 | ||
c4093a6a JM |
3851 | struct captured_breakpoint_query_args |
3852 | { | |
3853 | int bnum; | |
3854 | }; | |
c5aa993b | 3855 | |
c4093a6a | 3856 | static int |
2b65245e | 3857 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3858 | { |
3859 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3860 | struct breakpoint *b; |
c4093a6a JM |
3861 | CORE_ADDR dummy_addr = 0; |
3862 | ALL_BREAKPOINTS (b) | |
3863 | { | |
3864 | if (args->bnum == b->number) | |
c5aa993b | 3865 | { |
c4093a6a JM |
3866 | print_one_breakpoint (b, &dummy_addr); |
3867 | return GDB_RC_OK; | |
c5aa993b | 3868 | } |
c4093a6a JM |
3869 | } |
3870 | return GDB_RC_NONE; | |
3871 | } | |
c5aa993b | 3872 | |
c4093a6a | 3873 | enum gdb_rc |
ce43223b | 3874 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3875 | { |
3876 | struct captured_breakpoint_query_args args; | |
3877 | args.bnum = bnum; | |
3878 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3879 | an error. */ | |
b0b13bb4 DJ |
3880 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3881 | error_message, RETURN_MASK_ALL) < 0) | |
3882 | return GDB_RC_FAIL; | |
3883 | else | |
3884 | return GDB_RC_OK; | |
c4093a6a | 3885 | } |
c5aa993b | 3886 | |
7f3b0473 AC |
3887 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3888 | catchpoints, et.al.). */ | |
3889 | ||
3890 | static int | |
3891 | user_settable_breakpoint (const struct breakpoint *b) | |
3892 | { | |
3893 | return (b->type == bp_breakpoint | |
3894 | || b->type == bp_catch_load | |
3895 | || b->type == bp_catch_unload | |
3896 | || b->type == bp_catch_fork | |
3897 | || b->type == bp_catch_vfork | |
3898 | || b->type == bp_catch_exec | |
7f3b0473 AC |
3899 | || b->type == bp_hardware_breakpoint |
3900 | || b->type == bp_watchpoint | |
3901 | || b->type == bp_read_watchpoint | |
3902 | || b->type == bp_access_watchpoint | |
3903 | || b->type == bp_hardware_watchpoint); | |
3904 | } | |
3905 | ||
3906 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3907 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3908 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3909 | |
c4093a6a | 3910 | static void |
fba45db2 | 3911 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3912 | { |
52f0bd74 | 3913 | struct breakpoint *b; |
c4093a6a | 3914 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3915 | int nr_printable_breakpoints; |
3b31d625 | 3916 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3917 | |
7f3b0473 AC |
3918 | /* Compute the number of rows in the table. */ |
3919 | nr_printable_breakpoints = 0; | |
3920 | ALL_BREAKPOINTS (b) | |
3921 | if (bnum == -1 | |
3922 | || bnum == b->number) | |
3923 | { | |
3924 | if (allflag || user_settable_breakpoint (b)) | |
3925 | nr_printable_breakpoints++; | |
3926 | } | |
3927 | ||
8b93c638 | 3928 | if (addressprint) |
3b31d625 EZ |
3929 | bkpttbl_chain |
3930 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3931 | "BreakpointTable"); | |
8b93c638 | 3932 | else |
3b31d625 EZ |
3933 | bkpttbl_chain |
3934 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3935 | "BreakpointTable"); | |
8b93c638 | 3936 | |
7f3b0473 | 3937 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3938 | annotate_breakpoints_headers (); |
3939 | if (nr_printable_breakpoints > 0) | |
3940 | annotate_field (0); | |
0d381245 | 3941 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3942 | if (nr_printable_breakpoints > 0) |
3943 | annotate_field (1); | |
3944 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3945 | if (nr_printable_breakpoints > 0) | |
3946 | annotate_field (2); | |
3947 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3948 | if (nr_printable_breakpoints > 0) | |
3949 | annotate_field (3); | |
54e52265 | 3950 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
d7faa9e7 | 3951 | if (addressprint) |
7f3b0473 | 3952 | { |
d7faa9e7 AC |
3953 | if (nr_printable_breakpoints > 0) |
3954 | annotate_field (4); | |
17a912b6 | 3955 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3956 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3957 | else |
b25959ec | 3958 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3959 | } |
d7faa9e7 AC |
3960 | if (nr_printable_breakpoints > 0) |
3961 | annotate_field (5); | |
3962 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3963 | ui_out_table_body (uiout); | |
3964 | if (nr_printable_breakpoints > 0) | |
3965 | annotate_breakpoints_table (); | |
7f3b0473 | 3966 | |
c4093a6a JM |
3967 | ALL_BREAKPOINTS (b) |
3968 | if (bnum == -1 | |
3969 | || bnum == b->number) | |
3970 | { | |
3971 | /* We only print out user settable breakpoints unless the | |
3972 | allflag is set. */ | |
7f3b0473 AC |
3973 | if (allflag || user_settable_breakpoint (b)) |
3974 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3975 | } |
3976 | ||
3b31d625 | 3977 | do_cleanups (bkpttbl_chain); |
698384cd | 3978 | |
7f3b0473 | 3979 | if (nr_printable_breakpoints == 0) |
c906108c | 3980 | { |
8b93c638 JM |
3981 | if (bnum == -1) |
3982 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3983 | else | |
3984 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3985 | bnum); | |
c906108c SS |
3986 | } |
3987 | else | |
c4093a6a JM |
3988 | { |
3989 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3990 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3991 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
c4093a6a JM |
3992 | set_next_address (last_addr); |
3993 | } | |
c906108c | 3994 | |
c4093a6a JM |
3995 | /* FIXME? Should this be moved up so that it is only called when |
3996 | there have been breakpoints? */ | |
c906108c SS |
3997 | annotate_breakpoints_table_end (); |
3998 | } | |
3999 | ||
c906108c | 4000 | static void |
fba45db2 | 4001 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
4002 | { |
4003 | int bnum = -1; | |
4004 | ||
4005 | if (bnum_exp) | |
bb518678 | 4006 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4007 | |
4008 | breakpoint_1 (bnum, 0); | |
4009 | } | |
4010 | ||
7a292a7a | 4011 | static void |
fba45db2 | 4012 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4013 | { |
4014 | int bnum = -1; | |
4015 | ||
4016 | if (bnum_exp) | |
bb518678 | 4017 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4018 | |
4019 | breakpoint_1 (bnum, 1); | |
4020 | } | |
4021 | ||
0d381245 VP |
4022 | static int |
4023 | breakpoint_has_pc (struct breakpoint *b, CORE_ADDR pc, asection *section) | |
4024 | { | |
4025 | struct bp_location *bl = b->loc; | |
4026 | for (; bl; bl = bl->next) | |
4027 | { | |
4028 | if (bl->address == pc | |
4029 | && (!overlay_debugging || bl->section == section)) | |
4030 | return 1; | |
4031 | } | |
4032 | return 0; | |
4033 | } | |
4034 | ||
c906108c SS |
4035 | /* Print a message describing any breakpoints set at PC. */ |
4036 | ||
4037 | static void | |
d674a25c | 4038 | describe_other_breakpoints (CORE_ADDR pc, asection *section, int thread) |
c906108c | 4039 | { |
52f0bd74 AC |
4040 | int others = 0; |
4041 | struct breakpoint *b; | |
c906108c SS |
4042 | |
4043 | ALL_BREAKPOINTS (b) | |
0d381245 | 4044 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4045 | if (others > 0) |
4046 | { | |
a3f17187 AC |
4047 | if (others == 1) |
4048 | printf_filtered (_("Note: breakpoint ")); | |
4049 | else /* if (others == ???) */ | |
4050 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4051 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4052 | if (breakpoint_has_pc (b, pc, section)) |
4053 | { | |
4054 | others--; | |
4055 | printf_filtered ("%d", b->number); | |
4056 | if (b->thread == -1 && thread != -1) | |
4057 | printf_filtered (" (all threads)"); | |
4058 | else if (b->thread != -1) | |
4059 | printf_filtered (" (thread %d)", b->thread); | |
4060 | printf_filtered ("%s%s ", | |
4061 | ((b->enable_state == bp_disabled || | |
4062 | b->enable_state == bp_call_disabled) | |
4063 | ? " (disabled)" | |
4064 | : b->enable_state == bp_permanent | |
4065 | ? " (permanent)" | |
4066 | : ""), | |
4067 | (others > 1) ? "," | |
4068 | : ((others == 1) ? " and" : "")); | |
4069 | } | |
a3f17187 | 4070 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4071 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4072 | printf_filtered (".\n"); |
4073 | } | |
4074 | } | |
4075 | \f | |
4076 | /* Set the default place to put a breakpoint | |
4077 | for the `break' command with no arguments. */ | |
4078 | ||
4079 | void | |
fba45db2 KB |
4080 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4081 | int line) | |
c906108c SS |
4082 | { |
4083 | default_breakpoint_valid = valid; | |
4084 | default_breakpoint_address = addr; | |
4085 | default_breakpoint_symtab = symtab; | |
4086 | default_breakpoint_line = line; | |
4087 | } | |
4088 | ||
e4f237da KB |
4089 | /* Return true iff it is meaningful to use the address member of |
4090 | BPT. For some breakpoint types, the address member is irrelevant | |
4091 | and it makes no sense to attempt to compare it to other addresses | |
4092 | (or use it for any other purpose either). | |
4093 | ||
4094 | More specifically, each of the following breakpoint types will always | |
4095 | have a zero valued address and we don't want check_duplicates() to mark | |
4096 | breakpoints of any of these types to be a duplicate of an actual | |
4097 | breakpoint at address zero: | |
4098 | ||
4099 | bp_watchpoint | |
4100 | bp_hardware_watchpoint | |
4101 | bp_read_watchpoint | |
4102 | bp_access_watchpoint | |
4103 | bp_catch_exec | |
e4f237da KB |
4104 | bp_catch_fork |
4105 | bp_catch_vork */ | |
4106 | ||
4107 | static int | |
4108 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4109 | { | |
4110 | enum bptype type = bpt->type; | |
4111 | ||
4112 | return (type != bp_watchpoint | |
4113 | && type != bp_hardware_watchpoint | |
4114 | && type != bp_read_watchpoint | |
4115 | && type != bp_access_watchpoint | |
4116 | && type != bp_catch_exec | |
e4f237da KB |
4117 | && type != bp_catch_fork |
4118 | && type != bp_catch_vfork); | |
4119 | } | |
4120 | ||
9f60f21b | 4121 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4122 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4123 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4124 | If we have a permanent breakpoint at the same place as BPT, make |
4125 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4126 | |
4127 | static void | |
0d381245 | 4128 | check_duplicates_for (CORE_ADDR address, asection *section) |
c906108c | 4129 | { |
075f6582 | 4130 | struct bp_location *b; |
52f0bd74 | 4131 | int count = 0; |
075f6582 | 4132 | struct bp_location *perm_bp = 0; |
c906108c | 4133 | |
075f6582 DJ |
4134 | ALL_BP_LOCATIONS (b) |
4135 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4136 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4137 | && b->enabled |
4138 | && !b->shlib_disabled | |
075f6582 DJ |
4139 | && b->address == address /* address / overlay match */ |
4140 | && (!overlay_debugging || b->section == section) | |
4141 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4142 | { |
c2c6d25f | 4143 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4144 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4145 | { |
4146 | perm_bp = b; | |
4147 | break; | |
4148 | } | |
4149 | ||
c5aa993b | 4150 | count++; |
075f6582 | 4151 | b->duplicate = count > 1; |
c5aa993b | 4152 | } |
c2c6d25f JM |
4153 | |
4154 | /* If we found a permanent breakpoint at this address, go over the | |
4155 | list again and declare all the other breakpoints there to be the | |
4156 | duplicates. */ | |
4157 | if (perm_bp) | |
4158 | { | |
075f6582 | 4159 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4160 | |
4161 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4162 | if (! perm_bp->inserted) |
8e65ff28 | 4163 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4164 | _("allegedly permanent breakpoint is not " |
4165 | "actually inserted")); | |
c2c6d25f | 4166 | |
075f6582 | 4167 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4168 | if (b != perm_bp) |
4169 | { | |
075f6582 | 4170 | if (b->owner->enable_state != bp_disabled |
075f6582 | 4171 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4172 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4173 | && b->address == address /* address / overlay match */ |
4174 | && (!overlay_debugging || b->section == section) | |
4175 | && breakpoint_address_is_meaningful (b->owner)) | |
4176 | { | |
4177 | if (b->inserted) | |
4178 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4179 | _("another breakpoint was inserted on top of " |
4180 | "a permanent breakpoint")); | |
075f6582 DJ |
4181 | |
4182 | b->duplicate = 1; | |
4183 | } | |
c2c6d25f JM |
4184 | } |
4185 | } | |
c906108c SS |
4186 | } |
4187 | ||
0d381245 VP |
4188 | static void |
4189 | check_duplicates (struct breakpoint *bpt) | |
4190 | { | |
4191 | struct bp_location *bl = bpt->loc; | |
4192 | ||
4193 | if (! breakpoint_address_is_meaningful (bpt)) | |
4194 | return; | |
4195 | ||
4196 | for (; bl; bl = bl->next) | |
4197 | check_duplicates_for (bl->address, bl->section); | |
4198 | } | |
4199 | ||
76897487 KB |
4200 | static void |
4201 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4202 | int bnum, int have_bnum) | |
4203 | { | |
4204 | char astr1[40]; | |
4205 | char astr2[40]; | |
4206 | ||
bb599908 PH |
4207 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4208 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4209 | if (have_bnum) |
8a3fe4f8 | 4210 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4211 | bnum, astr1, astr2); |
4212 | else | |
8a3fe4f8 | 4213 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4214 | } |
4215 | ||
4216 | /* Adjust a breakpoint's address to account for architectural constraints | |
4217 | on breakpoint placement. Return the adjusted address. Note: Very | |
4218 | few targets require this kind of adjustment. For most targets, | |
4219 | this function is simply the identity function. */ | |
4220 | ||
4221 | static CORE_ADDR | |
88f7da05 | 4222 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4223 | { |
4224 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4225 | { | |
4226 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4227 | return bpaddr; | |
4228 | } | |
88f7da05 KB |
4229 | else if (bptype == bp_watchpoint |
4230 | || bptype == bp_hardware_watchpoint | |
4231 | || bptype == bp_read_watchpoint | |
4232 | || bptype == bp_access_watchpoint | |
4233 | || bptype == bp_catch_fork | |
4234 | || bptype == bp_catch_vfork | |
4235 | || bptype == bp_catch_exec) | |
4236 | { | |
4237 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4238 | have their addresses modified. */ | |
4239 | return bpaddr; | |
4240 | } | |
76897487 KB |
4241 | else |
4242 | { | |
4243 | CORE_ADDR adjusted_bpaddr; | |
4244 | ||
4245 | /* Some targets have architectural constraints on the placement | |
4246 | of breakpoint instructions. Obtain the adjusted address. */ | |
4247 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4248 | bpaddr); | |
4249 | ||
4250 | /* An adjusted breakpoint address can significantly alter | |
4251 | a user's expectations. Print a warning if an adjustment | |
4252 | is required. */ | |
4253 | if (adjusted_bpaddr != bpaddr) | |
4254 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4255 | ||
4256 | return adjusted_bpaddr; | |
4257 | } | |
4258 | } | |
4259 | ||
7cc221ef DJ |
4260 | /* Allocate a struct bp_location. */ |
4261 | ||
26bb91f3 | 4262 | static struct bp_location * |
e049a4b5 | 4263 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4264 | { |
4265 | struct bp_location *loc, *loc_p; | |
4266 | ||
4267 | loc = xmalloc (sizeof (struct bp_location)); | |
4268 | memset (loc, 0, sizeof (*loc)); | |
4269 | ||
e049a4b5 | 4270 | loc->owner = bpt; |
511a6cd4 | 4271 | loc->cond = NULL; |
0d381245 VP |
4272 | loc->shlib_disabled = 0; |
4273 | loc->enabled = 1; | |
e049a4b5 DJ |
4274 | |
4275 | switch (bp_type) | |
4276 | { | |
4277 | case bp_breakpoint: | |
4278 | case bp_until: | |
4279 | case bp_finish: | |
4280 | case bp_longjmp: | |
4281 | case bp_longjmp_resume: | |
4282 | case bp_step_resume: | |
e049a4b5 DJ |
4283 | case bp_watchpoint_scope: |
4284 | case bp_call_dummy: | |
4285 | case bp_shlib_event: | |
4286 | case bp_thread_event: | |
4287 | case bp_overlay_event: | |
4288 | case bp_catch_load: | |
4289 | case bp_catch_unload: | |
4290 | loc->loc_type = bp_loc_software_breakpoint; | |
4291 | break; | |
4292 | case bp_hardware_breakpoint: | |
4293 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4294 | break; | |
4295 | case bp_hardware_watchpoint: | |
4296 | case bp_read_watchpoint: | |
4297 | case bp_access_watchpoint: | |
4298 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4299 | break; | |
4300 | case bp_watchpoint: | |
4301 | case bp_catch_fork: | |
4302 | case bp_catch_vfork: | |
4303 | case bp_catch_exec: | |
e049a4b5 DJ |
4304 | loc->loc_type = bp_loc_other; |
4305 | break; | |
4306 | default: | |
e2e0b3e5 | 4307 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4308 | } |
4309 | ||
7cc221ef DJ |
4310 | return loc; |
4311 | } | |
4312 | ||
fe3f5fa8 VP |
4313 | static void free_bp_location (struct bp_location *loc) |
4314 | { | |
4315 | if (loc->cond) | |
4316 | xfree (loc->cond); | |
74960c60 VP |
4317 | |
4318 | if (loc->function_name) | |
4319 | xfree (loc->function_name); | |
4320 | ||
fe3f5fa8 VP |
4321 | xfree (loc); |
4322 | } | |
4323 | ||
0d381245 VP |
4324 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4325 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4326 | |
c40e75cd | 4327 | static struct breakpoint * |
0d381245 | 4328 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4329 | { |
52f0bd74 | 4330 | struct breakpoint *b, *b1; |
c906108c SS |
4331 | |
4332 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4333 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4334 | |
4d28f7a8 | 4335 | b->type = bptype; |
c906108c SS |
4336 | b->language = current_language->la_language; |
4337 | b->input_radix = input_radix; | |
4338 | b->thread = -1; | |
b5de0fa7 | 4339 | b->enable_state = bp_enabled; |
c906108c SS |
4340 | b->next = 0; |
4341 | b->silent = 0; | |
4342 | b->ignore_count = 0; | |
4343 | b->commands = NULL; | |
818dd999 | 4344 | b->frame_id = null_frame_id; |
c906108c SS |
4345 | b->dll_pathname = NULL; |
4346 | b->triggered_dll_pathname = NULL; | |
4347 | b->forked_inferior_pid = 0; | |
4348 | b->exec_pathname = NULL; | |
3086aeae | 4349 | b->ops = NULL; |
0d381245 | 4350 | b->condition_not_parsed = 0; |
c906108c SS |
4351 | |
4352 | /* Add this breakpoint to the end of the chain | |
4353 | so that a list of breakpoints will come out in order | |
4354 | of increasing numbers. */ | |
4355 | ||
4356 | b1 = breakpoint_chain; | |
4357 | if (b1 == 0) | |
4358 | breakpoint_chain = b; | |
4359 | else | |
4360 | { | |
4361 | while (b1->next) | |
4362 | b1 = b1->next; | |
4363 | b1->next = b; | |
4364 | } | |
0d381245 VP |
4365 | return b; |
4366 | } | |
4367 | ||
4368 | /* Initialize loc->function_name. */ | |
4369 | static void | |
4370 | set_breakpoint_location_function (struct bp_location *loc) | |
4371 | { | |
4372 | if (loc->owner->type == bp_breakpoint | |
4373 | || loc->owner->type == bp_hardware_breakpoint) | |
4374 | { | |
4375 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4376 | NULL, NULL); | |
4377 | if (loc->function_name) | |
4378 | loc->function_name = xstrdup (loc->function_name); | |
4379 | } | |
4380 | } | |
4381 | ||
4382 | /* set_raw_breakpoint is a low level routine for allocating and | |
4383 | partially initializing a breakpoint of type BPTYPE. The newly | |
4384 | created breakpoint's address, section, source file name, and line | |
4385 | number are provided by SAL. The newly created and partially | |
4386 | initialized breakpoint is added to the breakpoint chain and | |
4387 | is also returned as the value of this function. | |
4388 | ||
4389 | It is expected that the caller will complete the initialization of | |
4390 | the newly created breakpoint struct as well as output any status | |
4391 | information regarding the creation of a new breakpoint. In | |
4392 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4393 | number! Care should be taken to not allow an error to occur | |
4394 | prior to completing the initialization of the breakpoint. If this | |
4395 | should happen, a bogus breakpoint will be left on the chain. */ | |
4396 | ||
4397 | struct breakpoint * | |
4398 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4399 | { | |
4400 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4401 | CORE_ADDR adjusted_address; | |
4402 | ||
4403 | /* Adjust the breakpoint's address prior to allocating a location. | |
4404 | Once we call allocate_bp_location(), that mostly uninitialized | |
4405 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4406 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4407 | not want its scan of the location chain to find a breakpoint and |
4408 | location that's only been partially initialized. */ | |
4409 | adjusted_address = adjust_breakpoint_address (sal.pc, bptype); | |
4410 | ||
4411 | b->loc = allocate_bp_location (b, bptype); | |
4412 | b->loc->requested_address = sal.pc; | |
4413 | b->loc->address = adjusted_address; | |
4414 | ||
4415 | if (sal.symtab == NULL) | |
4416 | b->source_file = NULL; | |
4417 | else | |
4418 | b->source_file = savestring (sal.symtab->filename, | |
4419 | strlen (sal.symtab->filename)); | |
4420 | b->loc->section = sal.section; | |
4421 | b->line_number = sal.line; | |
4422 | ||
4423 | set_breakpoint_location_function (b->loc); | |
c906108c | 4424 | |
c906108c SS |
4425 | breakpoints_changed (); |
4426 | ||
4427 | return b; | |
4428 | } | |
4429 | ||
c2c6d25f JM |
4430 | |
4431 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4432 | instruction, hard-wired into the inferior's code. */ | |
4433 | void | |
4434 | make_breakpoint_permanent (struct breakpoint *b) | |
4435 | { | |
0d381245 | 4436 | struct bp_location *bl; |
b5de0fa7 | 4437 | b->enable_state = bp_permanent; |
c2c6d25f | 4438 | |
0d381245 VP |
4439 | /* By definition, permanent breakpoints are already present in the code. |
4440 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4441 | is called in just one place, so it's hard to say if it's reasonable | |
4442 | to have permanent breakpoint with multiple locations or not, | |
4443 | but it's easy to implmement. */ | |
4444 | for (bl = b->loc; bl; bl = bl->next) | |
4445 | bl->inserted = 1; | |
c2c6d25f JM |
4446 | } |
4447 | ||
1900040c MS |
4448 | static struct breakpoint * |
4449 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4450 | { | |
4451 | static int internal_breakpoint_number = -1; | |
4452 | struct symtab_and_line sal; | |
4453 | struct breakpoint *b; | |
4454 | ||
fe39c653 | 4455 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4456 | |
4457 | sal.pc = address; | |
4458 | sal.section = find_pc_overlay (sal.pc); | |
4459 | ||
4460 | b = set_raw_breakpoint (sal, type); | |
4461 | b->number = internal_breakpoint_number--; | |
4462 | b->disposition = disp_donttouch; | |
4463 | ||
4464 | return b; | |
4465 | } | |
4466 | ||
c906108c SS |
4467 | |
4468 | static void | |
fba45db2 | 4469 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4470 | { |
c906108c | 4471 | struct breakpoint *b; |
1900040c | 4472 | struct minimal_symbol *m; |
c906108c | 4473 | |
611c83ae PA |
4474 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
4475 | return; | |
4476 | set_momentary_breakpoint_at_pc (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
74960c60 | 4477 | update_global_location_list (); |
c906108c SS |
4478 | } |
4479 | ||
53a5351d JM |
4480 | /* Call this routine when stepping and nexting to enable a breakpoint |
4481 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4482 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4483 | ||
4484 | void | |
611c83ae | 4485 | set_longjmp_breakpoint (void) |
c906108c | 4486 | { |
52f0bd74 | 4487 | struct breakpoint *b; |
c906108c | 4488 | |
611c83ae | 4489 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
c5aa993b | 4490 | { |
611c83ae PA |
4491 | create_longjmp_breakpoint ("longjmp"); |
4492 | create_longjmp_breakpoint ("_longjmp"); | |
4493 | create_longjmp_breakpoint ("siglongjmp"); | |
4494 | create_longjmp_breakpoint ("_siglongjmp"); | |
c5aa993b | 4495 | } |
c906108c SS |
4496 | } |
4497 | ||
611c83ae | 4498 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4499 | void |
611c83ae | 4500 | delete_longjmp_breakpoint (int thread) |
c906108c | 4501 | { |
611c83ae | 4502 | struct breakpoint *b, *temp; |
c906108c | 4503 | |
611c83ae PA |
4504 | ALL_BREAKPOINTS_SAFE (b, temp) |
4505 | if (b->type == bp_longjmp) | |
4506 | { | |
4507 | if (b->thread == thread) | |
4508 | delete_breakpoint (b); | |
4509 | } | |
c906108c SS |
4510 | } |
4511 | ||
1900040c MS |
4512 | static void |
4513 | create_overlay_event_breakpoint (char *func_name) | |
4514 | { | |
4515 | struct breakpoint *b; | |
4516 | struct minimal_symbol *m; | |
4517 | ||
5520a790 | 4518 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4519 | return; |
4520 | ||
4521 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4522 | bp_overlay_event); | |
4523 | b->addr_string = xstrdup (func_name); | |
4524 | ||
4525 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4526 | { |
4527 | b->enable_state = bp_enabled; | |
4528 | overlay_events_enabled = 1; | |
4529 | } | |
1900040c | 4530 | else |
c02f5703 MS |
4531 | { |
4532 | b->enable_state = bp_disabled; | |
4533 | overlay_events_enabled = 0; | |
4534 | } | |
74960c60 | 4535 | update_global_location_list (); |
1900040c MS |
4536 | } |
4537 | ||
4538 | void | |
4539 | enable_overlay_breakpoints (void) | |
4540 | { | |
52f0bd74 | 4541 | struct breakpoint *b; |
1900040c MS |
4542 | |
4543 | ALL_BREAKPOINTS (b) | |
4544 | if (b->type == bp_overlay_event) | |
4545 | { | |
4546 | b->enable_state = bp_enabled; | |
74960c60 | 4547 | update_global_location_list (); |
c02f5703 | 4548 | overlay_events_enabled = 1; |
1900040c MS |
4549 | } |
4550 | } | |
4551 | ||
4552 | void | |
4553 | disable_overlay_breakpoints (void) | |
4554 | { | |
52f0bd74 | 4555 | struct breakpoint *b; |
1900040c MS |
4556 | |
4557 | ALL_BREAKPOINTS (b) | |
4558 | if (b->type == bp_overlay_event) | |
4559 | { | |
4560 | b->enable_state = bp_disabled; | |
74960c60 | 4561 | update_global_location_list (); |
c02f5703 | 4562 | overlay_events_enabled = 0; |
1900040c MS |
4563 | } |
4564 | } | |
4565 | ||
c4093a6a | 4566 | struct breakpoint * |
fba45db2 | 4567 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4568 | { |
4569 | struct breakpoint *b; | |
c4093a6a | 4570 | |
1900040c | 4571 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4572 | |
b5de0fa7 | 4573 | b->enable_state = bp_enabled; |
c4093a6a | 4574 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4575 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4576 | |
74960c60 VP |
4577 | update_global_location_list_nothrow (); |
4578 | ||
c4093a6a JM |
4579 | return b; |
4580 | } | |
4581 | ||
4582 | void | |
4583 | remove_thread_event_breakpoints (void) | |
4584 | { | |
4585 | struct breakpoint *b, *temp; | |
4586 | ||
4587 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4588 | if (b->type == bp_thread_event) | |
4589 | delete_breakpoint (b); | |
4590 | } | |
4591 | ||
0101ce28 JJ |
4592 | struct captured_parse_breakpoint_args |
4593 | { | |
4594 | char **arg_p; | |
4595 | struct symtabs_and_lines *sals_p; | |
4596 | char ***addr_string_p; | |
4597 | int *not_found_ptr; | |
4598 | }; | |
4599 | ||
4600 | struct lang_and_radix | |
4601 | { | |
4602 | enum language lang; | |
4603 | int radix; | |
4604 | }; | |
4605 | ||
0101ce28 | 4606 | |
cae688ec JJ |
4607 | void |
4608 | remove_solib_event_breakpoints (void) | |
4609 | { | |
4610 | struct breakpoint *b, *temp; | |
4611 | ||
4612 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4613 | if (b->type == bp_shlib_event) | |
4614 | delete_breakpoint (b); | |
4615 | } | |
4616 | ||
4617 | struct breakpoint * | |
4618 | create_solib_event_breakpoint (CORE_ADDR address) | |
4619 | { | |
4620 | struct breakpoint *b; | |
4621 | ||
4622 | b = create_internal_breakpoint (address, bp_shlib_event); | |
74960c60 | 4623 | update_global_location_list_nothrow (); |
cae688ec JJ |
4624 | return b; |
4625 | } | |
4626 | ||
4627 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4628 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4629 | ||
4630 | void | |
cb851954 | 4631 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4632 | { |
0d381245 | 4633 | struct bp_location *loc; |
cae688ec JJ |
4634 | int disabled_shlib_breaks = 0; |
4635 | ||
0d381245 | 4636 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4637 | { |
0d381245 VP |
4638 | struct breakpoint *b = loc->owner; |
4639 | /* We apply the check to all breakpoints, including disabled | |
4640 | for those with loc->duplicate set. This is so that when breakpoint | |
4641 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4642 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4643 | to insert those breakpoints and fail. */ | |
a77053c2 | 4644 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
0d381245 | 4645 | && !loc->shlib_disabled |
a77053c2 | 4646 | #ifdef PC_SOLIB |
0d381245 | 4647 | && PC_SOLIB (loc->address) |
a77053c2 | 4648 | #else |
0d381245 | 4649 | && solib_address (loc->address) |
a77053c2 MK |
4650 | #endif |
4651 | ) | |
0d381245 VP |
4652 | { |
4653 | loc->shlib_disabled = 1; | |
4654 | } | |
cae688ec JJ |
4655 | } |
4656 | } | |
4657 | ||
84acb35a JJ |
4658 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4659 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4660 | ||
75149521 | 4661 | static void |
84acb35a JJ |
4662 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4663 | { | |
0d381245 | 4664 | struct bp_location *loc; |
84acb35a JJ |
4665 | int disabled_shlib_breaks = 0; |
4666 | ||
0d381245 | 4667 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4668 | { |
0d381245 VP |
4669 | struct breakpoint *b = loc->owner; |
4670 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4671 | || loc->loc_type == bp_loc_software_breakpoint) | |
4672 | && !loc->shlib_disabled) | |
84acb35a | 4673 | { |
a77053c2 | 4674 | #ifdef PC_SOLIB |
0d381245 | 4675 | char *so_name = PC_SOLIB (loc->address); |
a77053c2 | 4676 | #else |
0d381245 | 4677 | char *so_name = solib_address (loc->address); |
a77053c2 MK |
4678 | #endif |
4679 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a | 4680 | { |
0d381245 | 4681 | loc->shlib_disabled = 1; |
84acb35a JJ |
4682 | /* At this point, we cannot rely on remove_breakpoint |
4683 | succeeding so we must mark the breakpoint as not inserted | |
4684 | to prevent future errors occurring in remove_breakpoints. */ | |
0d381245 | 4685 | loc->inserted = 0; |
84acb35a JJ |
4686 | if (!disabled_shlib_breaks) |
4687 | { | |
4688 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4689 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4690 | so_name); |
4691 | } | |
4692 | disabled_shlib_breaks = 1; | |
4693 | } | |
4694 | } | |
4695 | } | |
84acb35a JJ |
4696 | } |
4697 | ||
c906108c | 4698 | static void |
fba45db2 KB |
4699 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4700 | enum bptype bp_kind) | |
c906108c | 4701 | { |
c5aa993b JM |
4702 | struct symtab_and_line sal; |
4703 | struct breakpoint *b; | |
4704 | int thread = -1; /* All threads. */ | |
4705 | ||
fe39c653 | 4706 | init_sal (&sal); |
c906108c SS |
4707 | sal.pc = 0; |
4708 | sal.symtab = NULL; | |
4709 | sal.line = 0; | |
c5aa993b | 4710 | |
4d28f7a8 | 4711 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4712 | set_breakpoint_count (breakpoint_count + 1); |
4713 | b->number = breakpoint_count; | |
53a5351d JM |
4714 | b->cond_string = (cond_string == NULL) ? |
4715 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4716 | b->thread = thread; |
4717 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4718 | b->enable_state = bp_enabled; |
4719 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4720 | b->forked_inferior_pid = 0; |
74960c60 VP |
4721 | update_global_location_list (); |
4722 | ||
c5aa993b | 4723 | |
c906108c SS |
4724 | mention (b); |
4725 | } | |
4726 | ||
9b70b993 | 4727 | static void |
fba45db2 | 4728 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4729 | { |
4730 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4731 | } | |
c5aa993b | 4732 | |
9b70b993 | 4733 | static void |
fba45db2 | 4734 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4735 | { |
4736 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4737 | } | |
4738 | ||
9b70b993 | 4739 | static void |
fba45db2 | 4740 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4741 | { |
c5aa993b JM |
4742 | struct symtab_and_line sal; |
4743 | struct breakpoint *b; | |
4744 | int thread = -1; /* All threads. */ | |
c906108c | 4745 | |
fe39c653 | 4746 | init_sal (&sal); |
c906108c SS |
4747 | sal.pc = 0; |
4748 | sal.symtab = NULL; | |
4749 | sal.line = 0; | |
4750 | ||
4d28f7a8 | 4751 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4752 | set_breakpoint_count (breakpoint_count + 1); |
4753 | b->number = breakpoint_count; | |
53a5351d JM |
4754 | b->cond_string = (cond_string == NULL) ? |
4755 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4756 | b->thread = thread; |
4757 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4758 | b->enable_state = bp_enabled; |
4759 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
74960c60 | 4760 | update_global_location_list (); |
c906108c | 4761 | |
c906108c SS |
4762 | mention (b); |
4763 | } | |
4764 | ||
4765 | static int | |
fba45db2 | 4766 | hw_breakpoint_used_count (void) |
c906108c | 4767 | { |
52f0bd74 | 4768 | struct breakpoint *b; |
c906108c SS |
4769 | int i = 0; |
4770 | ||
4771 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4772 | { |
b5de0fa7 | 4773 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4774 | i++; |
4775 | } | |
c906108c SS |
4776 | |
4777 | return i; | |
4778 | } | |
4779 | ||
4780 | static int | |
fba45db2 | 4781 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4782 | { |
52f0bd74 | 4783 | struct breakpoint *b; |
c906108c SS |
4784 | int i = 0; |
4785 | ||
4786 | *other_type_used = 0; | |
4787 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4788 | { |
468d015d | 4789 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4790 | { |
4791 | if (b->type == type) | |
4792 | i++; | |
4793 | else if ((b->type == bp_hardware_watchpoint || | |
4794 | b->type == bp_read_watchpoint || | |
468d015d | 4795 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4796 | *other_type_used = 1; |
4797 | } | |
4798 | } | |
c906108c SS |
4799 | return i; |
4800 | } | |
4801 | ||
c906108c | 4802 | void |
fba45db2 | 4803 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4804 | { |
c5aa993b | 4805 | struct breakpoint *b; |
c906108c SS |
4806 | |
4807 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4808 | { |
4809 | if (((b->type == bp_watchpoint) | |
4810 | || (b->type == bp_hardware_watchpoint) | |
4811 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4812 | || (b->type == bp_access_watchpoint)) |
468d015d | 4813 | && breakpoint_enabled (b)) |
c5aa993b | 4814 | { |
b5de0fa7 | 4815 | b->enable_state = bp_call_disabled; |
74960c60 | 4816 | update_global_location_list (); |
c5aa993b JM |
4817 | } |
4818 | } | |
c906108c SS |
4819 | } |
4820 | ||
4821 | void | |
fba45db2 | 4822 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4823 | { |
c5aa993b | 4824 | struct breakpoint *b; |
c906108c SS |
4825 | |
4826 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4827 | { |
4828 | if (((b->type == bp_watchpoint) | |
4829 | || (b->type == bp_hardware_watchpoint) | |
4830 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4831 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4832 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4833 | { |
b5de0fa7 | 4834 | b->enable_state = bp_enabled; |
74960c60 | 4835 | update_global_location_list (); |
c5aa993b JM |
4836 | } |
4837 | } | |
c906108c SS |
4838 | } |
4839 | ||
4840 | ||
4841 | /* Set a breakpoint that will evaporate an end of command | |
4842 | at address specified by SAL. | |
4843 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4844 | ||
4845 | struct breakpoint * | |
818dd999 | 4846 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4847 | enum bptype type) |
c906108c | 4848 | { |
52f0bd74 | 4849 | struct breakpoint *b; |
4d28f7a8 | 4850 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4851 | b->enable_state = bp_enabled; |
4852 | b->disposition = disp_donttouch; | |
818dd999 | 4853 | b->frame_id = frame_id; |
c906108c SS |
4854 | |
4855 | /* If we're debugging a multi-threaded program, then we | |
4856 | want momentary breakpoints to be active in only a | |
4857 | single thread of control. */ | |
39f77062 KB |
4858 | if (in_thread_list (inferior_ptid)) |
4859 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 4860 | |
74960c60 VP |
4861 | update_global_location_list_nothrow (); |
4862 | ||
c906108c SS |
4863 | return b; |
4864 | } | |
611c83ae PA |
4865 | |
4866 | struct breakpoint * | |
4867 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
4868 | { | |
4869 | struct symtab_and_line sal; | |
4870 | ||
4871 | sal = find_pc_line (pc, 0); | |
4872 | sal.pc = pc; | |
4873 | sal.section = find_pc_overlay (pc); | |
4874 | sal.explicit_pc = 1; | |
4875 | ||
4876 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
4877 | } | |
c906108c | 4878 | \f |
c5aa993b | 4879 | |
c906108c SS |
4880 | /* Tell the user we have just set a breakpoint B. */ |
4881 | ||
4882 | static void | |
fba45db2 | 4883 | mention (struct breakpoint *b) |
c906108c SS |
4884 | { |
4885 | int say_where = 0; | |
3b31d625 | 4886 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4887 | struct ui_stream *stb; |
4888 | ||
4889 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4890 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4891 | |
9a4105ab AC |
4892 | /* FIXME: This is misplaced; mention() is called by things (like |
4893 | hitting a watchpoint) other than breakpoint creation. It should | |
4894 | be possible to clean this up and at the same time replace the | |
4895 | random calls to breakpoint_changed with this hook, as has already | |
4896 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4897 | if (deprecated_create_breakpoint_hook) | |
4898 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4899 | breakpoint_create_event (b->number); |
c906108c | 4900 | |
3086aeae DJ |
4901 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4902 | b->ops->print_mention (b); | |
4903 | else | |
4904 | switch (b->type) | |
4905 | { | |
4906 | case bp_none: | |
a3f17187 | 4907 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4908 | break; |
4909 | case bp_watchpoint: | |
4910 | ui_out_text (uiout, "Watchpoint "); | |
4911 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4912 | ui_out_field_int (uiout, "number", b->number); | |
4913 | ui_out_text (uiout, ": "); | |
4914 | print_expression (b->exp, stb->stream); | |
4915 | ui_out_field_stream (uiout, "exp", stb); | |
4916 | do_cleanups (ui_out_chain); | |
4917 | break; | |
4918 | case bp_hardware_watchpoint: | |
4919 | ui_out_text (uiout, "Hardware watchpoint "); | |
4920 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4921 | ui_out_field_int (uiout, "number", b->number); | |
4922 | ui_out_text (uiout, ": "); | |
4923 | print_expression (b->exp, stb->stream); | |
4924 | ui_out_field_stream (uiout, "exp", stb); | |
4925 | do_cleanups (ui_out_chain); | |
4926 | break; | |
4927 | case bp_read_watchpoint: | |
4928 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4929 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4930 | ui_out_field_int (uiout, "number", b->number); | |
4931 | ui_out_text (uiout, ": "); | |
4932 | print_expression (b->exp, stb->stream); | |
4933 | ui_out_field_stream (uiout, "exp", stb); | |
4934 | do_cleanups (ui_out_chain); | |
4935 | break; | |
4936 | case bp_access_watchpoint: | |
4937 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4938 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4939 | ui_out_field_int (uiout, "number", b->number); | |
4940 | ui_out_text (uiout, ": "); | |
4941 | print_expression (b->exp, stb->stream); | |
4942 | ui_out_field_stream (uiout, "exp", stb); | |
4943 | do_cleanups (ui_out_chain); | |
4944 | break; | |
4945 | case bp_breakpoint: | |
4946 | if (ui_out_is_mi_like_p (uiout)) | |
4947 | { | |
4948 | say_where = 0; | |
4949 | break; | |
4950 | } | |
2cec12e5 AR |
4951 | if (b->disposition == disp_del) |
4952 | printf_filtered (_("Temporary breakpoint")); | |
4953 | else | |
4954 | printf_filtered (_("Breakpoint")); | |
4955 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
4956 | say_where = 1; |
4957 | break; | |
4958 | case bp_hardware_breakpoint: | |
4959 | if (ui_out_is_mi_like_p (uiout)) | |
4960 | { | |
4961 | say_where = 0; | |
4962 | break; | |
4963 | } | |
a3f17187 | 4964 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
4965 | say_where = 1; |
4966 | break; | |
4967 | case bp_catch_load: | |
4968 | case bp_catch_unload: | |
a3f17187 | 4969 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
4970 | b->number, |
4971 | (b->type == bp_catch_load) ? "load" : "unload", | |
4972 | (b->dll_pathname != NULL) ? | |
4973 | b->dll_pathname : "<any library>"); | |
4974 | break; | |
4975 | case bp_catch_fork: | |
4976 | case bp_catch_vfork: | |
a3f17187 | 4977 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4978 | b->number, |
4979 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4980 | break; | |
4981 | case bp_catch_exec: | |
a3f17187 | 4982 | printf_filtered (_("Catchpoint %d (exec)"), |
3086aeae DJ |
4983 | b->number); |
4984 | break; | |
3086aeae DJ |
4985 | |
4986 | case bp_until: | |
4987 | case bp_finish: | |
4988 | case bp_longjmp: | |
4989 | case bp_longjmp_resume: | |
4990 | case bp_step_resume: | |
3086aeae DJ |
4991 | case bp_call_dummy: |
4992 | case bp_watchpoint_scope: | |
4993 | case bp_shlib_event: | |
4994 | case bp_thread_event: | |
4995 | case bp_overlay_event: | |
4996 | break; | |
4997 | } | |
c906108c | 4998 | |
c906108c SS |
4999 | if (say_where) |
5000 | { | |
a3f17187 AC |
5001 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5002 | single string. */ | |
0d381245 | 5003 | if (b->loc == NULL) |
c906108c | 5004 | { |
a3f17187 | 5005 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5006 | } |
5007 | else | |
5008 | { | |
5009 | if (addressprint || b->source_file == NULL) | |
5010 | { | |
5011 | printf_filtered (" at "); | |
ed49a04f | 5012 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
5013 | } |
5014 | if (b->source_file) | |
5015 | printf_filtered (": file %s, line %d.", | |
5016 | b->source_file, b->line_number); | |
0d381245 VP |
5017 | |
5018 | if (b->loc->next) | |
5019 | { | |
5020 | struct bp_location *loc = b->loc; | |
5021 | int n = 0; | |
5022 | for (; loc; loc = loc->next) | |
5023 | ++n; | |
5024 | printf_filtered (" (%d locations)", n); | |
5025 | } | |
5026 | ||
c906108c | 5027 | } |
c906108c | 5028 | } |
8b93c638 | 5029 | do_cleanups (old_chain); |
9dc5e2a9 | 5030 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5031 | return; |
c906108c SS |
5032 | printf_filtered ("\n"); |
5033 | } | |
c906108c | 5034 | \f |
c5aa993b | 5035 | |
0d381245 VP |
5036 | static struct bp_location * |
5037 | add_location_to_breakpoint (struct breakpoint *b, enum bptype bptype, | |
5038 | const struct symtab_and_line *sal) | |
5039 | { | |
5040 | struct bp_location *loc, **tmp; | |
5041 | ||
5042 | loc = allocate_bp_location (b, bptype); | |
5043 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
5044 | ; | |
5045 | *tmp = loc; | |
5046 | loc->requested_address = sal->pc; | |
5047 | loc->address = adjust_breakpoint_address (loc->requested_address, | |
5048 | bptype); | |
5049 | loc->section = sal->section; | |
5050 | ||
5051 | set_breakpoint_location_function (loc); | |
5052 | return loc; | |
5053 | } | |
c3f6f71d | 5054 | |
018d34a4 VP |
5055 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5056 | as textual description of the location, and COND_STRING | |
db107f19 | 5057 | as condition expression. */ |
018d34a4 VP |
5058 | |
5059 | static void | |
0d381245 | 5060 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5061 | char *cond_string, |
5062 | enum bptype type, enum bpdisp disposition, | |
604133b5 AR |
5063 | int thread, int ignore_count, |
5064 | struct breakpoint_ops *ops, int from_tty) | |
018d34a4 | 5065 | { |
0d381245 VP |
5066 | struct breakpoint *b = NULL; |
5067 | int i; | |
018d34a4 VP |
5068 | |
5069 | if (type == bp_hardware_breakpoint) | |
5070 | { | |
5071 | int i = hw_breakpoint_used_count (); | |
5072 | int target_resources_ok = | |
5073 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5074 | i + 1, 0); | |
5075 | if (target_resources_ok == 0) | |
5076 | error (_("No hardware breakpoint support in the target.")); | |
5077 | else if (target_resources_ok < 0) | |
5078 | error (_("Hardware breakpoints used exceeds limit.")); | |
5079 | } | |
5080 | ||
0d381245 VP |
5081 | for (i = 0; i < sals.nelts; ++i) |
5082 | { | |
5083 | struct symtab_and_line sal = sals.sals[i]; | |
5084 | struct bp_location *loc; | |
5085 | ||
5086 | if (from_tty) | |
5087 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5088 | ||
5089 | if (i == 0) | |
5090 | { | |
5091 | b = set_raw_breakpoint (sal, type); | |
5092 | set_breakpoint_count (breakpoint_count + 1); | |
5093 | b->number = breakpoint_count; | |
5094 | b->thread = thread; | |
018d34a4 | 5095 | |
0d381245 VP |
5096 | b->cond_string = cond_string; |
5097 | b->ignore_count = ignore_count; | |
5098 | b->enable_state = bp_enabled; | |
5099 | b->disposition = disposition; | |
018d34a4 | 5100 | |
0d381245 VP |
5101 | loc = b->loc; |
5102 | } | |
5103 | else | |
018d34a4 | 5104 | { |
0d381245 VP |
5105 | loc = add_location_to_breakpoint (b, type, &sal); |
5106 | } | |
5107 | ||
5108 | if (b->cond_string) | |
5109 | { | |
5110 | char *arg = b->cond_string; | |
d32a6982 | 5111 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5112 | if (*arg) |
db107f19 | 5113 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5114 | } |
0d381245 | 5115 | } |
018d34a4 VP |
5116 | |
5117 | if (addr_string) | |
5118 | b->addr_string = addr_string; | |
5119 | else | |
5120 | /* addr_string has to be used or breakpoint_re_set will delete | |
5121 | me. */ | |
5122 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5123 | ||
604133b5 | 5124 | b->ops = ops; |
018d34a4 VP |
5125 | mention (b); |
5126 | } | |
5127 | ||
ed0616c6 VP |
5128 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5129 | elements to fill the void space. */ | |
5130 | static void remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
5131 | { | |
5132 | int i = index_to_remove+1; | |
5133 | int last_index = sal->nelts-1; | |
5134 | ||
5135 | for (;i <= last_index; ++i) | |
5136 | sal->sals[i-1] = sal->sals[i]; | |
5137 | ||
5138 | --(sal->nelts); | |
5139 | } | |
5140 | ||
5141 | /* If appropriate, obtains all sals that correspond | |
5142 | to the same file and line as SAL. This is done | |
5143 | only if SAL does not have explicit PC and has | |
5144 | line and file information. If we got just a single | |
5145 | expanded sal, return the original. | |
5146 | ||
5147 | Otherwise, if SAL.explicit_line is not set, filter out | |
5148 | all sals for which the name of enclosing function | |
5149 | is different from SAL. This makes sure that if we have | |
5150 | breakpoint originally set in template instantiation, say | |
5151 | foo<int>(), we won't expand SAL to locations at the same | |
5152 | line in all existing instantiations of 'foo'. | |
5153 | ||
5154 | */ | |
5155 | struct symtabs_and_lines | |
5156 | expand_line_sal_maybe (struct symtab_and_line sal) | |
5157 | { | |
5158 | struct symtabs_and_lines expanded; | |
5159 | CORE_ADDR original_pc = sal.pc; | |
5160 | char *original_function = NULL; | |
5161 | int found; | |
5162 | int i; | |
5163 | ||
5164 | /* If we have explicit pc, don't expand. | |
5165 | If we have no line number, we can't expand. */ | |
5166 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5167 | { | |
5168 | expanded.nelts = 1; | |
5169 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5170 | expanded.sals[0] = sal; | |
5171 | return expanded; | |
5172 | } | |
5173 | ||
5174 | sal.pc = 0; | |
5175 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5176 | ||
5177 | expanded = expand_line_sal (sal); | |
5178 | if (expanded.nelts == 1) | |
5179 | { | |
5180 | /* We had one sal, we got one sal. Without futher | |
5181 | processing, just return the original sal. */ | |
5182 | xfree (expanded.sals); | |
5183 | expanded.nelts = 1; | |
5184 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5185 | sal.pc = original_pc; | |
5186 | expanded.sals[0] = sal; | |
5187 | return expanded; | |
5188 | } | |
5189 | ||
5190 | if (!sal.explicit_line) | |
5191 | { | |
5192 | CORE_ADDR func_addr, func_end; | |
5193 | for (i = 0; i < expanded.nelts; ++i) | |
5194 | { | |
5195 | CORE_ADDR pc = expanded.sals[i].pc; | |
5196 | char *this_function; | |
5197 | if (find_pc_partial_function (pc, &this_function, | |
5198 | &func_addr, &func_end)) | |
5199 | { | |
5200 | if (this_function && | |
5201 | strcmp (this_function, original_function) != 0) | |
5202 | { | |
5203 | remove_sal (&expanded, i); | |
5204 | --i; | |
5205 | } | |
5206 | else if (func_addr == pc) | |
5207 | { | |
5208 | /* We're at beginning of a function, and should | |
5209 | skip prologue. */ | |
5210 | struct symbol *sym = find_pc_function (pc); | |
5211 | if (sym) | |
5212 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5213 | else | |
5214 | expanded.sals[i].pc | |
5215 | = gdbarch_skip_prologue (current_gdbarch, pc); | |
5216 | } | |
5217 | } | |
5218 | } | |
5219 | } | |
5220 | ||
5221 | ||
5222 | if (expanded.nelts <= 1) | |
5223 | { | |
5224 | /* This is un ugly workaround. If we get zero | |
5225 | expanded sals then something is really wrong. | |
5226 | Fix that by returnign the original sal. */ | |
5227 | xfree (expanded.sals); | |
5228 | expanded.nelts = 1; | |
5229 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5230 | sal.pc = original_pc; | |
5231 | expanded.sals[0] = sal; | |
5232 | return expanded; | |
5233 | } | |
5234 | ||
5235 | if (original_pc) | |
5236 | { | |
5237 | found = 0; | |
5238 | for (i = 0; i < expanded.nelts; ++i) | |
5239 | if (expanded.sals[i].pc == original_pc) | |
5240 | { | |
5241 | found = 1; | |
5242 | break; | |
5243 | } | |
5244 | gdb_assert (found); | |
5245 | } | |
5246 | ||
5247 | return expanded; | |
5248 | } | |
5249 | ||
018d34a4 VP |
5250 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5251 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5252 | value. COND_STRING, if not NULL, specified the condition to be | |
5253 | used for all breakpoints. Essentially the only case where | |
5254 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5255 | function. In that case, it's still not possible to specify | |
5256 | separate conditions for different overloaded functions, so | |
5257 | we take just a single condition string. | |
5258 | ||
c3f6f71d | 5259 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5260 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5261 | array contents). If the function fails (error() is called), the |
5262 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5263 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5264 | |
5265 | static void | |
c3f6f71d | 5266 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5267 | char *cond_string, |
c3f6f71d | 5268 | enum bptype type, enum bpdisp disposition, |
604133b5 AR |
5269 | int thread, int ignore_count, |
5270 | struct breakpoint_ops *ops, int from_tty) | |
c906108c | 5271 | { |
018d34a4 VP |
5272 | int i; |
5273 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5274 | { |
ed0616c6 VP |
5275 | struct symtabs_and_lines expanded = |
5276 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5277 | |
ed0616c6 | 5278 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5279 | cond_string, type, disposition, |
604133b5 | 5280 | thread, ignore_count, ops, from_tty); |
c3f6f71d | 5281 | } |
74960c60 VP |
5282 | |
5283 | update_global_location_list (); | |
c3f6f71d | 5284 | } |
c906108c | 5285 | |
c3f6f71d JM |
5286 | /* Parse ARG which is assumed to be a SAL specification possibly |
5287 | followed by conditionals. On return, SALS contains an array of SAL | |
5288 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5289 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5290 | |
b9362cc7 | 5291 | static void |
c3f6f71d JM |
5292 | parse_breakpoint_sals (char **address, |
5293 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5294 | char ***addr_string, |
5295 | int *not_found_ptr) | |
c3f6f71d JM |
5296 | { |
5297 | char *addr_start = *address; | |
5298 | *addr_string = NULL; | |
5299 | /* If no arg given, or if first arg is 'if ', use the default | |
5300 | breakpoint. */ | |
5301 | if ((*address) == NULL | |
5302 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5303 | { |
5304 | if (default_breakpoint_valid) | |
5305 | { | |
c3f6f71d | 5306 | struct symtab_and_line sal; |
fe39c653 | 5307 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5308 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5309 | xmalloc (sizeof (struct symtab_and_line)); |
5310 | sal.pc = default_breakpoint_address; | |
5311 | sal.line = default_breakpoint_line; | |
5312 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5313 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5314 | sals->sals[0] = sal; |
5315 | sals->nelts = 1; | |
c906108c SS |
5316 | } |
5317 | else | |
8a3fe4f8 | 5318 | error (_("No default breakpoint address now.")); |
c906108c SS |
5319 | } |
5320 | else | |
5321 | { | |
c906108c | 5322 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5323 | current_source_symtab (which is decode_line_1's default). This |
5324 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5325 | leaving default_breakpoint_* alone. |
5326 | ObjC: However, don't match an Objective-C method name which | |
5327 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5328 | |
c214a6fd | 5329 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5330 | |
c906108c | 5331 | if (default_breakpoint_valid |
0378c332 | 5332 | && (!cursal.symtab |
1aeae86e AF |
5333 | || ((strchr ("+-", (*address)[0]) != NULL) |
5334 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5335 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5336 | default_breakpoint_line, addr_string, |
5337 | not_found_ptr); | |
c906108c | 5338 | else |
0101ce28 JJ |
5339 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5340 | addr_string, not_found_ptr); | |
c906108c | 5341 | } |
c3f6f71d JM |
5342 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5343 | if (sals->nelts > 0 && *addr_string == NULL) | |
5344 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5345 | if (addr_start != (*address)) | |
c906108c | 5346 | { |
c3f6f71d JM |
5347 | int i; |
5348 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5349 | { |
c3f6f71d JM |
5350 | /* Add the string if not present. */ |
5351 | if ((*addr_string)[i] == NULL) | |
5352 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5353 | } |
5354 | } | |
c3f6f71d | 5355 | } |
c906108c | 5356 | |
c906108c | 5357 | |
c3f6f71d JM |
5358 | /* Convert each SAL into a real PC. Verify that the PC can be |
5359 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5360 | |
b9362cc7 | 5361 | static void |
c3f6f71d JM |
5362 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5363 | char *address) | |
5364 | { | |
5365 | int i; | |
5366 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5367 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5368 | } |
5369 | ||
05ff989b | 5370 | static void |
0101ce28 JJ |
5371 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5372 | { | |
5373 | struct captured_parse_breakpoint_args *args = data; | |
5374 | ||
5375 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5376 | args->not_found_ptr); | |
0101ce28 JJ |
5377 | } |
5378 | ||
018d34a4 VP |
5379 | /* Given TOK, a string specification of condition and thread, as |
5380 | accepted by the 'break' command, extract the condition | |
5381 | string and thread number and set *COND_STRING and *THREAD. | |
5382 | PC identifies the context at which the condition should be parsed. | |
5383 | If no condition is found, *COND_STRING is set to NULL. | |
5384 | If no thread is found, *THREAD is set to -1. */ | |
5385 | static void | |
5386 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
5387 | char **cond_string, int *thread) | |
5388 | { | |
5389 | *cond_string = NULL; | |
5390 | *thread = -1; | |
5391 | while (tok && *tok) | |
5392 | { | |
5393 | char *end_tok; | |
5394 | int toklen; | |
5395 | char *cond_start = NULL; | |
5396 | char *cond_end = NULL; | |
5397 | while (*tok == ' ' || *tok == '\t') | |
5398 | tok++; | |
5399 | ||
5400 | end_tok = tok; | |
5401 | ||
5402 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5403 | end_tok++; | |
5404 | ||
5405 | toklen = end_tok - tok; | |
5406 | ||
5407 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5408 | { | |
5409 | tok = cond_start = end_tok + 1; | |
5410 | parse_exp_1 (&tok, block_for_pc (pc), 0); | |
5411 | cond_end = tok; | |
5412 | *cond_string = savestring (cond_start, | |
5413 | cond_end - cond_start); | |
5414 | } | |
5415 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5416 | { | |
5417 | char *tmptok; | |
5418 | ||
5419 | tok = end_tok + 1; | |
5420 | tmptok = tok; | |
5421 | *thread = strtol (tok, &tok, 0); | |
5422 | if (tok == tmptok) | |
5423 | error (_("Junk after thread keyword.")); | |
5424 | if (!valid_thread_id (*thread)) | |
5425 | error (_("Unknown thread %d."), *thread); | |
5426 | } | |
5427 | else | |
5428 | error (_("Junk at end of arguments.")); | |
5429 | } | |
5430 | } | |
5431 | ||
72b2ff0e VP |
5432 | /* Set a breakpoint. This function is shared between |
5433 | CLI and MI functions for setting a breakpoint. | |
5434 | This function has two major modes of operations, | |
5435 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5436 | If non-zero, the function will parse arg, extracting | |
5437 | breakpoint location, address and thread. Otherwise, | |
5438 | ARG is just the location of breakpoint, with condition | |
5439 | and thread specified by the COND_STRING and THREAD | |
5440 | parameters. */ | |
0101ce28 | 5441 | |
98deb0da | 5442 | static void |
72b2ff0e | 5443 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 VP |
5444 | int parse_condition_and_thread, |
5445 | int tempflag, int hardwareflag, | |
5446 | int ignore_count, | |
5447 | enum auto_boolean pending_break_support, | |
604133b5 | 5448 | struct breakpoint_ops *ops, |
60c46647 | 5449 | int from_tty) |
c3f6f71d | 5450 | { |
71fff37b | 5451 | struct gdb_exception e; |
c3f6f71d | 5452 | struct symtabs_and_lines sals; |
0101ce28 | 5453 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5454 | char *copy_arg; |
5455 | char *err_msg; | |
c3f6f71d JM |
5456 | char *addr_start = arg; |
5457 | char **addr_string; | |
5458 | struct cleanup *old_chain; | |
5459 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5460 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5461 | int i; |
0101ce28 | 5462 | int pending = 0; |
0101ce28 | 5463 | int not_found = 0; |
c3f6f71d | 5464 | |
c3f6f71d JM |
5465 | sals.sals = NULL; |
5466 | sals.nelts = 0; | |
5467 | addr_string = NULL; | |
c3f6f71d | 5468 | |
0101ce28 JJ |
5469 | parse_args.arg_p = &arg; |
5470 | parse_args.sals_p = &sals; | |
5471 | parse_args.addr_string_p = &addr_string; | |
5472 | parse_args.not_found_ptr = ¬_found; | |
5473 | ||
05ff989b AC |
5474 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5475 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5476 | |
5477 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5478 | switch (e.reason) |
0101ce28 | 5479 | { |
05ff989b | 5480 | case RETURN_QUIT: |
98deb0da | 5481 | throw_exception (e); |
05ff989b AC |
5482 | case RETURN_ERROR: |
5483 | switch (e.error) | |
0101ce28 | 5484 | { |
05ff989b | 5485 | case NOT_FOUND_ERROR: |
0101ce28 | 5486 | |
05ff989b AC |
5487 | /* If pending breakpoint support is turned off, throw |
5488 | error. */ | |
fa8d40ab JJ |
5489 | |
5490 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5491 | throw_exception (e); |
5492 | ||
5493 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5494 | |
05ff989b AC |
5495 | /* If pending breakpoint support is auto query and the user |
5496 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5497 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5498 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5499 | return; |
fa8d40ab | 5500 | |
05ff989b AC |
5501 | /* At this point, either the user was queried about setting |
5502 | a pending breakpoint and selected yes, or pending | |
5503 | breakpoint behavior is on and thus a pending breakpoint | |
5504 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5505 | copy_arg = xstrdup (addr_start); |
5506 | addr_string = ©_arg; | |
5507 | sals.nelts = 1; | |
5508 | sals.sals = &pending_sal; | |
5509 | pending_sal.pc = 0; | |
5510 | pending = 1; | |
05ff989b AC |
5511 | break; |
5512 | default: | |
98deb0da | 5513 | throw_exception (e); |
0101ce28 | 5514 | } |
05ff989b AC |
5515 | default: |
5516 | if (!sals.nelts) | |
98deb0da | 5517 | return; |
0101ce28 | 5518 | } |
c3f6f71d JM |
5519 | |
5520 | /* Create a chain of things that always need to be cleaned up. */ | |
5521 | old_chain = make_cleanup (null_cleanup, 0); | |
5522 | ||
0101ce28 JJ |
5523 | if (!pending) |
5524 | { | |
5525 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5526 | make_cleanup (xfree, sals.sals); | |
5527 | ||
5528 | /* Cleanup the addr_string array but not its contents. */ | |
5529 | make_cleanup (xfree, addr_string); | |
5530 | } | |
c3f6f71d | 5531 | |
c3f6f71d JM |
5532 | /* ----------------------------- SNIP ----------------------------- |
5533 | Anything added to the cleanup chain beyond this point is assumed | |
5534 | to be part of a breakpoint. If the breakpoint create succeeds | |
5535 | then the memory is not reclaimed. */ | |
5536 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5537 | ||
5538 | /* Mark the contents of the addr_string for cleanup. These go on | |
5539 | the breakpoint_chain and only occure if the breakpoint create | |
5540 | fails. */ | |
5541 | for (i = 0; i < sals.nelts; i++) | |
5542 | { | |
5543 | if (addr_string[i] != NULL) | |
b8c9b27d | 5544 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5545 | } |
5546 | ||
5547 | /* Resolve all line numbers to PC's and verify that the addresses | |
5548 | are ok for the target. */ | |
0101ce28 JJ |
5549 | if (!pending) |
5550 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5551 | |
5552 | /* Verify that condition can be parsed, before setting any | |
5553 | breakpoints. Allocate a separate condition expression for each | |
5554 | breakpoint. */ | |
0101ce28 | 5555 | if (!pending) |
c3f6f71d | 5556 | { |
2f069f6f | 5557 | if (parse_condition_and_thread) |
72b2ff0e VP |
5558 | { |
5559 | /* Here we only parse 'arg' to separate condition | |
5560 | from thread number, so parsing in context of first | |
5561 | sal is OK. When setting the breakpoint we'll | |
5562 | re-parse it in context of each sal. */ | |
5563 | cond_string = NULL; | |
5564 | thread = -1; | |
5565 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, &thread); | |
5566 | if (cond_string) | |
5567 | make_cleanup (xfree, cond_string); | |
5568 | } | |
2f069f6f | 5569 | else |
72b2ff0e VP |
5570 | { |
5571 | /* Create a private copy of condition string. */ | |
5572 | if (cond_string) | |
5573 | { | |
5574 | cond_string = xstrdup (cond_string); | |
5575 | make_cleanup (xfree, cond_string); | |
5576 | } | |
5577 | } | |
018d34a4 | 5578 | create_breakpoints (sals, addr_string, cond_string, |
0101ce28 JJ |
5579 | hardwareflag ? bp_hardware_breakpoint |
5580 | : bp_breakpoint, | |
5581 | tempflag ? disp_del : disp_donttouch, | |
604133b5 | 5582 | thread, ignore_count, ops, from_tty); |
c906108c | 5583 | } |
0101ce28 JJ |
5584 | else |
5585 | { | |
fe3f5fa8 | 5586 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5587 | struct breakpoint *b; |
5588 | ||
0101ce28 JJ |
5589 | make_cleanup (xfree, copy_arg); |
5590 | ||
0d381245 VP |
5591 | b = set_raw_breakpoint_without_location (hardwareflag |
5592 | ? bp_hardware_breakpoint | |
5593 | : bp_breakpoint); | |
0101ce28 JJ |
5594 | set_breakpoint_count (breakpoint_count + 1); |
5595 | b->number = breakpoint_count; | |
72b2ff0e | 5596 | b->thread = -1; |
018d34a4 | 5597 | b->addr_string = addr_string[0]; |
72b2ff0e | 5598 | b->cond_string = NULL; |
0101ce28 | 5599 | b->ignore_count = ignore_count; |
0101ce28 | 5600 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5601 | b->condition_not_parsed = 1; |
604133b5 | 5602 | b->ops = ops; |
74960c60 VP |
5603 | |
5604 | update_global_location_list (); | |
0101ce28 JJ |
5605 | mention (b); |
5606 | } | |
5607 | ||
c3f6f71d | 5608 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5609 | warning (_("Multiple breakpoints were set.\n" |
5610 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5611 | /* That's it. Discard the cleanups for data inserted into the |
5612 | breakpoint. */ | |
5613 | discard_cleanups (breakpoint_chain); | |
5614 | /* But cleanup everything else. */ | |
5615 | do_cleanups (old_chain); | |
5616 | } | |
c906108c | 5617 | |
72b2ff0e VP |
5618 | /* Set a breakpoint. |
5619 | ARG is a string describing breakpoint address, | |
5620 | condition, and thread. | |
5621 | FLAG specifies if a breakpoint is hardware on, | |
5622 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5623 | and BP_TEMPFLAG. */ | |
5624 | ||
98deb0da | 5625 | static void |
72b2ff0e | 5626 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5627 | { |
72b2ff0e VP |
5628 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5629 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5630 | |
98deb0da VP |
5631 | break_command_really (arg, |
5632 | NULL, 0, 1 /* parse arg */, | |
5633 | tempflag, hardwareflag, | |
5634 | 0 /* Ignore count */, | |
604133b5 AR |
5635 | pending_break_support, |
5636 | NULL /* breakpoint_ops */, | |
5637 | from_tty); | |
c906108c SS |
5638 | } |
5639 | ||
72b2ff0e | 5640 | |
98deb0da VP |
5641 | void |
5642 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5643 | int hardwareflag, int tempflag, |
ce43223b | 5644 | int thread, int ignore_count, |
98deb0da | 5645 | int pending) |
c3f6f71d | 5646 | { |
98deb0da VP |
5647 | break_command_really (address, condition, thread, |
5648 | 0 /* condition and thread are valid. */, | |
5649 | tempflag, hardwareflag, | |
5650 | ignore_count, | |
5651 | pending | |
5652 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
604133b5 | 5653 | NULL, 0); |
c3f6f71d JM |
5654 | } |
5655 | ||
6a048695 JB |
5656 | /* Adjust SAL to the first instruction past the function prologue. |
5657 | The end of the prologue is determined using the line table from | |
5658 | the debugging information. | |
5659 | ||
5660 | If SAL is already past the prologue, then do nothing. */ | |
5661 | ||
5662 | static void | |
5663 | skip_prologue_sal (struct symtab_and_line *sal) | |
5664 | { | |
5665 | struct symbol *sym = find_pc_function (sal->pc); | |
5666 | struct symtab_and_line start_sal; | |
5667 | ||
5668 | if (sym == NULL) | |
5669 | return; | |
5670 | ||
5671 | start_sal = find_function_start_sal (sym, 1); | |
5672 | if (sal->pc < start_sal.pc) | |
5673 | *sal = start_sal; | |
5674 | } | |
c3f6f71d | 5675 | |
c906108c SS |
5676 | /* Helper function for break_command_1 and disassemble_command. */ |
5677 | ||
5678 | void | |
fba45db2 | 5679 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5680 | { |
5681 | CORE_ADDR pc; | |
5682 | ||
5683 | if (sal->pc == 0 && sal->symtab != NULL) | |
5684 | { | |
5685 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5686 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5687 | sal->line, sal->symtab->filename); |
5688 | sal->pc = pc; | |
6a048695 JB |
5689 | |
5690 | /* If this SAL corresponds to a breakpoint inserted using | |
5691 | a line number, then skip the function prologue if necessary. */ | |
5692 | if (sal->explicit_line) | |
5693 | skip_prologue_sal (sal); | |
c906108c SS |
5694 | } |
5695 | ||
5696 | if (sal->section == 0 && sal->symtab != NULL) | |
5697 | { | |
5698 | struct blockvector *bv; | |
c5aa993b JM |
5699 | struct block *b; |
5700 | struct symbol *sym; | |
c906108c | 5701 | |
801e3a5b | 5702 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5703 | if (bv != NULL) |
5704 | { | |
c906108c SS |
5705 | sym = block_function (b); |
5706 | if (sym != NULL) | |
5707 | { | |
5708 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5709 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5710 | } | |
5711 | else | |
5712 | { | |
5713 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5714 | have to look harder. This case can be executed if we have |
5715 | line numbers but no functions (as can happen in assembly | |
5716 | source). */ | |
c906108c | 5717 | |
c5aa993b | 5718 | struct minimal_symbol *msym; |
c906108c SS |
5719 | |
5720 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5721 | if (msym) | |
5722 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5723 | } | |
5724 | } | |
5725 | } | |
5726 | } | |
5727 | ||
5728 | void | |
fba45db2 | 5729 | break_command (char *arg, int from_tty) |
c906108c | 5730 | { |
db107f19 | 5731 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5732 | } |
5733 | ||
c906108c | 5734 | void |
fba45db2 | 5735 | tbreak_command (char *arg, int from_tty) |
c906108c | 5736 | { |
db107f19 | 5737 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
5738 | } |
5739 | ||
c906108c | 5740 | static void |
fba45db2 | 5741 | hbreak_command (char *arg, int from_tty) |
c906108c | 5742 | { |
db107f19 | 5743 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
5744 | } |
5745 | ||
5746 | static void | |
fba45db2 | 5747 | thbreak_command (char *arg, int from_tty) |
c906108c | 5748 | { |
db107f19 | 5749 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
5750 | } |
5751 | ||
5752 | static void | |
fba45db2 | 5753 | stop_command (char *arg, int from_tty) |
c906108c | 5754 | { |
a3f17187 | 5755 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5756 | Usage: stop in <function | address>\n\ |
a3f17187 | 5757 | stop at <line>\n")); |
c906108c SS |
5758 | } |
5759 | ||
5760 | static void | |
fba45db2 | 5761 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5762 | { |
5763 | int badInput = 0; | |
5764 | ||
c5aa993b | 5765 | if (arg == (char *) NULL) |
c906108c SS |
5766 | badInput = 1; |
5767 | else if (*arg != '*') | |
5768 | { | |
5769 | char *argptr = arg; | |
5770 | int hasColon = 0; | |
5771 | ||
53a5351d JM |
5772 | /* look for a ':'. If this is a line number specification, then |
5773 | say it is bad, otherwise, it should be an address or | |
5774 | function/method name */ | |
c906108c | 5775 | while (*argptr && !hasColon) |
c5aa993b JM |
5776 | { |
5777 | hasColon = (*argptr == ':'); | |
5778 | argptr++; | |
5779 | } | |
c906108c SS |
5780 | |
5781 | if (hasColon) | |
c5aa993b | 5782 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5783 | else |
c5aa993b | 5784 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5785 | } |
5786 | ||
5787 | if (badInput) | |
a3f17187 | 5788 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5789 | else |
db107f19 | 5790 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5791 | } |
5792 | ||
5793 | static void | |
fba45db2 | 5794 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5795 | { |
5796 | int badInput = 0; | |
5797 | ||
c5aa993b | 5798 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5799 | badInput = 1; |
5800 | else | |
5801 | { | |
5802 | char *argptr = arg; | |
5803 | int hasColon = 0; | |
5804 | ||
5805 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5806 | it is probably a line number. */ |
c906108c | 5807 | while (*argptr && !hasColon) |
c5aa993b JM |
5808 | { |
5809 | hasColon = (*argptr == ':'); | |
5810 | argptr++; | |
5811 | } | |
c906108c SS |
5812 | |
5813 | if (hasColon) | |
c5aa993b | 5814 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5815 | else |
c5aa993b | 5816 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5817 | } |
5818 | ||
5819 | if (badInput) | |
a3f17187 | 5820 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5821 | else |
db107f19 | 5822 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5823 | } |
5824 | ||
53a5351d JM |
5825 | /* accessflag: hw_write: watch write, |
5826 | hw_read: watch read, | |
5827 | hw_access: watch access (read or write) */ | |
c906108c | 5828 | static void |
fba45db2 | 5829 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 5830 | { |
d983da9c | 5831 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
5832 | struct symtab_and_line sal; |
5833 | struct expression *exp; | |
5834 | struct block *exp_valid_block; | |
5835 | struct value *val, *mark; | |
5836 | struct frame_info *frame; | |
5837 | struct frame_info *prev_frame = NULL; | |
5838 | char *exp_start = NULL; | |
5839 | char *exp_end = NULL; | |
37e4754d | 5840 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
5841 | int toklen; |
5842 | char *cond_start = NULL; | |
5843 | char *cond_end = NULL; | |
5844 | struct expression *cond = NULL; | |
5845 | int i, other_type_used, target_resources_ok = 0; | |
5846 | enum bptype bp_type; | |
5847 | int mem_cnt = 0; | |
37e4754d | 5848 | int thread = -1; |
c906108c | 5849 | |
fe39c653 | 5850 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5851 | |
37e4754d LM |
5852 | /* Make sure that we actually have parameters to parse. */ |
5853 | if (arg != NULL && arg[0] != '\0') | |
5854 | { | |
5855 | toklen = strlen (arg); /* Size of argument list. */ | |
5856 | ||
5857 | /* Points tok to the end of the argument list. */ | |
5858 | tok = arg + toklen - 1; | |
5859 | ||
5860 | /* Go backwards in the parameters list. Skip the last parameter. | |
5861 | If we're expecting a 'thread <thread_num>' parameter, this should | |
5862 | be the thread identifier. */ | |
5863 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5864 | tok--; | |
5865 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5866 | tok--; | |
5867 | ||
5868 | /* Points end_tok to the beginning of the last token. */ | |
5869 | id_tok_start = tok + 1; | |
5870 | ||
5871 | /* Go backwards in the parameters list. Skip one more parameter. | |
5872 | If we're expecting a 'thread <thread_num>' parameter, we should | |
5873 | reach a "thread" token. */ | |
5874 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5875 | tok--; | |
5876 | ||
5877 | end_tok = tok; | |
5878 | ||
5879 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5880 | tok--; | |
5881 | ||
5882 | /* Move the pointer forward to skip the whitespace and | |
5883 | calculate the length of the token. */ | |
5884 | tok++; | |
5885 | toklen = end_tok - tok; | |
5886 | ||
5887 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5888 | { | |
5889 | /* At this point we've found a "thread" token, which means | |
5890 | the user is trying to set a watchpoint that triggers | |
5891 | only in a specific thread. */ | |
5892 | char *endp; | |
5893 | ||
5894 | /* Extract the thread ID from the next token. */ | |
5895 | thread = strtol (id_tok_start, &endp, 0); | |
5896 | ||
5897 | /* Check if the user provided a valid numeric value for the | |
5898 | thread ID. */ | |
5899 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
5900 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
5901 | ||
5902 | /* Check if the thread actually exists. */ | |
5903 | if (!valid_thread_id (thread)) | |
5904 | error (_("Unknown thread %d."), thread); | |
5905 | ||
5906 | /* Truncate the string and get rid of the thread <thread_num> | |
5907 | parameter before the parameter list is parsed by the | |
5908 | evaluate_expression() function. */ | |
5909 | *tok = '\0'; | |
5910 | } | |
5911 | } | |
5912 | ||
5913 | /* Parse the rest of the arguments. */ | |
c906108c SS |
5914 | innermost_block = NULL; |
5915 | exp_start = arg; | |
5916 | exp = parse_exp_1 (&arg, 0, 0); | |
5917 | exp_end = arg; | |
5918 | exp_valid_block = innermost_block; | |
5919 | mark = value_mark (); | |
fa4727a6 DJ |
5920 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
5921 | if (val != NULL) | |
5922 | release_value (val); | |
c906108c SS |
5923 | |
5924 | tok = arg; | |
5925 | while (*tok == ' ' || *tok == '\t') | |
5926 | tok++; | |
5927 | end_tok = tok; | |
5928 | ||
5929 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5930 | end_tok++; | |
5931 | ||
5932 | toklen = end_tok - tok; | |
5933 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5934 | { | |
5935 | tok = cond_start = end_tok + 1; | |
5936 | cond = parse_exp_1 (&tok, 0, 0); | |
5937 | cond_end = tok; | |
5938 | } | |
5939 | if (*tok) | |
8a3fe4f8 | 5940 | error (_("Junk at end of command.")); |
c906108c | 5941 | |
53a5351d | 5942 | if (accessflag == hw_read) |
c5aa993b | 5943 | bp_type = bp_read_watchpoint; |
53a5351d | 5944 | else if (accessflag == hw_access) |
c5aa993b JM |
5945 | bp_type = bp_access_watchpoint; |
5946 | else | |
5947 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5948 | |
5949 | mem_cnt = can_use_hardware_watchpoint (val); | |
5950 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 5951 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
5952 | if (mem_cnt != 0) |
5953 | { | |
5954 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5955 | target_resources_ok = |
5956 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5957 | other_type_used); | |
c5aa993b | 5958 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5959 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 5960 | |
c5aa993b | 5961 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5962 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 5963 | } |
c906108c | 5964 | |
4d28f7a8 KB |
5965 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5966 | watchpoint could not be set. */ | |
5967 | if (!mem_cnt || target_resources_ok <= 0) | |
5968 | bp_type = bp_watchpoint; | |
5969 | ||
d983da9c DJ |
5970 | frame = block_innermost_frame (exp_valid_block); |
5971 | if (frame) | |
5972 | prev_frame = get_prev_frame (frame); | |
5973 | else | |
5974 | prev_frame = NULL; | |
5975 | ||
5976 | /* If the expression is "local", then set up a "watchpoint scope" | |
5977 | breakpoint at the point where we've left the scope of the watchpoint | |
5978 | expression. Create the scope breakpoint before the watchpoint, so | |
5979 | that we will encounter it first in bpstat_stop_status. */ | |
5980 | if (innermost_block && prev_frame) | |
5981 | { | |
5982 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
5983 | bp_watchpoint_scope); | |
5984 | ||
5985 | scope_breakpoint->enable_state = bp_enabled; | |
5986 | ||
5987 | /* Automatically delete the breakpoint when it hits. */ | |
5988 | scope_breakpoint->disposition = disp_del; | |
5989 | ||
5990 | /* Only break in the proper frame (help with recursion). */ | |
5991 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
5992 | ||
5993 | /* Set the address at which we will stop. */ | |
5994 | scope_breakpoint->loc->requested_address | |
5995 | = get_frame_pc (prev_frame); | |
5996 | scope_breakpoint->loc->address | |
5997 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
5998 | scope_breakpoint->type); | |
5999 | } | |
6000 | ||
c906108c | 6001 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6002 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6003 | set_breakpoint_count (breakpoint_count + 1); |
6004 | b->number = breakpoint_count; | |
37e4754d | 6005 | b->thread = thread; |
b5de0fa7 | 6006 | b->disposition = disp_donttouch; |
c906108c SS |
6007 | b->exp = exp; |
6008 | b->exp_valid_block = exp_valid_block; | |
6009 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6010 | b->val = val; | |
fa4727a6 | 6011 | b->val_valid = 1; |
511a6cd4 | 6012 | b->loc->cond = cond; |
c906108c SS |
6013 | if (cond_start) |
6014 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6015 | else | |
6016 | b->cond_string = 0; | |
c5aa993b | 6017 | |
c906108c | 6018 | if (frame) |
d983da9c | 6019 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6020 | else |
35a487f1 | 6021 | b->watchpoint_frame = null_frame_id; |
c906108c | 6022 | |
d983da9c | 6023 | if (scope_breakpoint != NULL) |
c906108c | 6024 | { |
d983da9c DJ |
6025 | /* The scope breakpoint is related to the watchpoint. We will |
6026 | need to act on them together. */ | |
6027 | b->related_breakpoint = scope_breakpoint; | |
6028 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6029 | } |
d983da9c | 6030 | |
c906108c SS |
6031 | value_free_to_mark (mark); |
6032 | mention (b); | |
74960c60 | 6033 | update_global_location_list (); |
c906108c SS |
6034 | } |
6035 | ||
6036 | /* Return count of locations need to be watched and can be handled | |
6037 | in hardware. If the watchpoint can not be handled | |
6038 | in hardware return zero. */ | |
6039 | ||
c906108c | 6040 | static int |
fba45db2 | 6041 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6042 | { |
6043 | int found_memory_cnt = 0; | |
2e70b7b9 | 6044 | struct value *head = v; |
c906108c SS |
6045 | |
6046 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6047 | if (!can_use_hw_watchpoints) |
c906108c | 6048 | return 0; |
c5aa993b | 6049 | |
5c44784c JM |
6050 | /* Make sure that the value of the expression depends only upon |
6051 | memory contents, and values computed from them within GDB. If we | |
6052 | find any register references or function calls, we can't use a | |
6053 | hardware watchpoint. | |
6054 | ||
6055 | The idea here is that evaluating an expression generates a series | |
6056 | of values, one holding the value of every subexpression. (The | |
6057 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6058 | a*b+c.) GDB's values hold almost enough information to establish | |
6059 | the criteria given above --- they identify memory lvalues, | |
6060 | register lvalues, computed values, etcetera. So we can evaluate | |
6061 | the expression, and then scan the chain of values that leaves | |
6062 | behind to decide whether we can detect any possible change to the | |
6063 | expression's final value using only hardware watchpoints. | |
6064 | ||
6065 | However, I don't think that the values returned by inferior | |
6066 | function calls are special in any way. So this function may not | |
6067 | notice that an expression involving an inferior function call | |
6068 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6069 | for (; v; v = value_next (v)) |
c906108c | 6070 | { |
5c44784c | 6071 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6072 | { |
d69fe07e | 6073 | if (value_lazy (v)) |
5c44784c JM |
6074 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6075 | we either just used its address (e.g., `a' in `a.b') or | |
6076 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6077 | ; | |
53a5351d | 6078 | else |
5c44784c JM |
6079 | { |
6080 | /* Ahh, memory we actually used! Check if we can cover | |
6081 | it with hardware watchpoints. */ | |
df407dfe | 6082 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6083 | |
6084 | /* We only watch structs and arrays if user asked for it | |
6085 | explicitly, never if they just happen to appear in a | |
6086 | middle of some value chain. */ | |
6087 | if (v == head | |
6088 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6089 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6090 | { | |
df407dfe AC |
6091 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
6092 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
6093 | |
6094 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
6095 | return 0; | |
6096 | else | |
6097 | found_memory_cnt++; | |
6098 | } | |
5c44784c | 6099 | } |
c5aa993b | 6100 | } |
5086187c AC |
6101 | else if (VALUE_LVAL (v) != not_lval |
6102 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6103 | return 0; /* ??? What does this represent? */ |
5086187c | 6104 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6105 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6106 | } |
6107 | ||
6108 | /* The expression itself looks suitable for using a hardware | |
6109 | watchpoint, but give the target machine a chance to reject it. */ | |
6110 | return found_memory_cnt; | |
6111 | } | |
6112 | ||
8b93c638 | 6113 | void |
fba45db2 | 6114 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6115 | { |
6116 | watch_command (arg, from_tty); | |
6117 | } | |
8926118c | 6118 | |
c5aa993b | 6119 | static void |
fba45db2 | 6120 | watch_command (char *arg, int from_tty) |
c906108c | 6121 | { |
53a5351d | 6122 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6123 | } |
6124 | ||
8b93c638 | 6125 | void |
fba45db2 | 6126 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6127 | { |
6128 | rwatch_command (arg, from_tty); | |
6129 | } | |
8926118c | 6130 | |
c5aa993b | 6131 | static void |
fba45db2 | 6132 | rwatch_command (char *arg, int from_tty) |
c906108c | 6133 | { |
53a5351d | 6134 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6135 | } |
6136 | ||
8b93c638 | 6137 | void |
fba45db2 | 6138 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6139 | { |
6140 | awatch_command (arg, from_tty); | |
6141 | } | |
8926118c | 6142 | |
c5aa993b | 6143 | static void |
fba45db2 | 6144 | awatch_command (char *arg, int from_tty) |
c906108c | 6145 | { |
53a5351d | 6146 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6147 | } |
c906108c | 6148 | \f |
c5aa993b | 6149 | |
43ff13b4 | 6150 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6151 | because it uses the mechanisms of breakpoints. */ |
6152 | ||
43ff13b4 JM |
6153 | /* This function is called by fetch_inferior_event via the |
6154 | cmd_continuation pointer, to complete the until command. It takes | |
6155 | care of cleaning up the temporary breakpoints set up by the until | |
6156 | command. */ | |
c2c6d25f | 6157 | static void |
f107f563 | 6158 | until_break_command_continuation (struct continuation_arg *arg, int error) |
43ff13b4 | 6159 | { |
f107f563 VP |
6160 | delete_breakpoint ((struct breakpoint *)(arg->data.pointer)); |
6161 | if (arg->next) | |
6162 | delete_breakpoint ((struct breakpoint *)(arg->next->data.pointer)); | |
43ff13b4 JM |
6163 | } |
6164 | ||
c906108c | 6165 | void |
ae66c1fc | 6166 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6167 | { |
6168 | struct symtabs_and_lines sals; | |
6169 | struct symtab_and_line sal; | |
206415a3 DJ |
6170 | struct frame_info *frame = get_selected_frame (NULL); |
6171 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6172 | struct breakpoint *breakpoint; |
f107f563 | 6173 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 6174 | struct cleanup *old_chain; |
0d06e24b | 6175 | struct continuation_arg *arg1; |
f107f563 | 6176 | struct continuation_arg *arg2; |
0d06e24b | 6177 | |
c906108c SS |
6178 | |
6179 | clear_proceed_status (); | |
6180 | ||
6181 | /* Set a breakpoint where the user wants it and at return from | |
6182 | this function */ | |
c5aa993b | 6183 | |
c906108c SS |
6184 | if (default_breakpoint_valid) |
6185 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6186 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6187 | else |
53a5351d | 6188 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6189 | 0, (char ***) NULL, NULL); |
c5aa993b | 6190 | |
c906108c | 6191 | if (sals.nelts != 1) |
8a3fe4f8 | 6192 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6193 | |
c906108c | 6194 | sal = sals.sals[0]; |
b8c9b27d | 6195 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6196 | |
c906108c | 6197 | if (*arg) |
8a3fe4f8 | 6198 | error (_("Junk at end of arguments.")); |
c5aa993b | 6199 | |
c906108c | 6200 | resolve_sal_pc (&sal); |
c5aa993b | 6201 | |
ae66c1fc EZ |
6202 | if (anywhere) |
6203 | /* If the user told us to continue until a specified location, | |
6204 | we don't specify a frame at which we need to stop. */ | |
6205 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6206 | else | |
6207 | /* Otherwise, specify the current frame, because we want to stop only | |
6208 | at the very same frame. */ | |
206415a3 | 6209 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6210 | bp_until); |
c5aa993b | 6211 | |
f107f563 | 6212 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6213 | |
ae66c1fc EZ |
6214 | /* Keep within the current frame, or in frames called by the current |
6215 | one. */ | |
c906108c SS |
6216 | if (prev_frame) |
6217 | { | |
30f7db39 AC |
6218 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6219 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6220 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6221 | bp_until); | |
6222 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6223 | } |
c5aa993b | 6224 | |
c906108c | 6225 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6226 | |
6227 | /* If we are running asynchronously, and proceed call above has actually | |
6228 | managed to start the target, arrange for breakpoints to be | |
6229 | deleted when the target stops. Otherwise, we're already stopped and | |
6230 | delete breakpoints via cleanup chain. */ | |
6231 | ||
6232 | if (target_can_async_p () && target_executing) | |
6233 | { | |
6234 | arg1 = | |
6235 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
6236 | arg1->next = NULL; | |
6237 | arg1->data.pointer = breakpoint; | |
6238 | ||
6239 | if (breakpoint2) | |
6240 | { | |
6241 | arg2 = (struct continuation_arg *) | |
6242 | xmalloc ( sizeof (struct continuation_arg)); | |
6243 | arg2->next = NULL; | |
6244 | arg2->data.pointer = breakpoint2; | |
6245 | arg1->next = arg2; | |
6246 | } | |
6247 | ||
6248 | discard_cleanups (old_chain); | |
6249 | add_continuation (until_break_command_continuation, arg1); | |
6250 | } | |
6251 | else | |
c5aa993b | 6252 | do_cleanups (old_chain); |
c906108c | 6253 | } |
ae66c1fc | 6254 | |
c906108c | 6255 | static void |
fba45db2 | 6256 | ep_skip_leading_whitespace (char **s) |
c906108c | 6257 | { |
c5aa993b JM |
6258 | if ((s == NULL) || (*s == NULL)) |
6259 | return; | |
6260 | while (isspace (**s)) | |
6261 | *s += 1; | |
c906108c | 6262 | } |
c5aa993b | 6263 | |
c906108c SS |
6264 | /* This function examines a string, and attempts to find a token |
6265 | that might be an event name in the leading characters. If a | |
6266 | possible match is found, a pointer to the last character of | |
6267 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6268 | |
c906108c | 6269 | static char * |
fba45db2 | 6270 | ep_find_event_name_end (char *arg) |
c906108c | 6271 | { |
c5aa993b JM |
6272 | char *s = arg; |
6273 | char *event_name_end = NULL; | |
6274 | ||
c906108c SS |
6275 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6276 | if (arg == NULL) | |
6277 | return NULL; | |
c5aa993b | 6278 | |
c906108c | 6279 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6280 | Basically, we're looking for alphanumerics and underscores; |
6281 | anything else delimites the token. */ | |
c906108c SS |
6282 | while (*s != '\0') |
6283 | { | |
c5aa993b JM |
6284 | if (!isalnum (*s) && (*s != '_')) |
6285 | break; | |
c906108c SS |
6286 | event_name_end = s; |
6287 | s++; | |
6288 | } | |
c5aa993b | 6289 | |
c906108c SS |
6290 | return event_name_end; |
6291 | } | |
6292 | ||
c5aa993b | 6293 | |
c906108c SS |
6294 | /* This function attempts to parse an optional "if <cond>" clause |
6295 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6296 | |
c906108c SS |
6297 | Else, it returns a pointer to the condition string. (It does not |
6298 | attempt to evaluate the string against a particular block.) And, | |
6299 | it updates arg to point to the first character following the parsed | |
6300 | if clause in the arg string. */ | |
53a5351d | 6301 | |
c906108c | 6302 | static char * |
fba45db2 | 6303 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6304 | { |
c5aa993b JM |
6305 | char *cond_string; |
6306 | ||
6307 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6308 | return NULL; |
c5aa993b | 6309 | |
c906108c SS |
6310 | /* Skip the "if" keyword. */ |
6311 | (*arg) += 2; | |
c5aa993b | 6312 | |
c906108c SS |
6313 | /* Skip any extra leading whitespace, and record the start of the |
6314 | condition string. */ | |
6315 | ep_skip_leading_whitespace (arg); | |
6316 | cond_string = *arg; | |
c5aa993b | 6317 | |
c906108c SS |
6318 | /* Assume that the condition occupies the remainder of the arg string. */ |
6319 | (*arg) += strlen (cond_string); | |
c5aa993b | 6320 | |
c906108c SS |
6321 | return cond_string; |
6322 | } | |
c5aa993b | 6323 | |
c906108c SS |
6324 | /* This function attempts to parse an optional filename from the arg |
6325 | string. If one is not found, it returns NULL. | |
c5aa993b | 6326 | |
c906108c SS |
6327 | Else, it returns a pointer to the parsed filename. (This function |
6328 | makes no attempt to verify that a file of that name exists, or is | |
6329 | accessible.) And, it updates arg to point to the first character | |
6330 | following the parsed filename in the arg string. | |
c5aa993b | 6331 | |
c906108c SS |
6332 | Note that clients needing to preserve the returned filename for |
6333 | future access should copy it to their own buffers. */ | |
6334 | static char * | |
fba45db2 | 6335 | ep_parse_optional_filename (char **arg) |
c906108c | 6336 | { |
c5aa993b JM |
6337 | static char filename[1024]; |
6338 | char *arg_p = *arg; | |
6339 | int i; | |
6340 | char c; | |
6341 | ||
c906108c SS |
6342 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6343 | return NULL; | |
c5aa993b JM |
6344 | |
6345 | for (i = 0;; i++) | |
c906108c SS |
6346 | { |
6347 | c = *arg_p; | |
6348 | if (isspace (c)) | |
c5aa993b | 6349 | c = '\0'; |
c906108c SS |
6350 | filename[i] = c; |
6351 | if (c == '\0') | |
c5aa993b | 6352 | break; |
c906108c SS |
6353 | arg_p++; |
6354 | } | |
6355 | *arg = arg_p; | |
c5aa993b | 6356 | |
c906108c SS |
6357 | return filename; |
6358 | } | |
c5aa993b | 6359 | |
c906108c SS |
6360 | /* Commands to deal with catching events, such as signals, exceptions, |
6361 | process start/exit, etc. */ | |
c5aa993b JM |
6362 | |
6363 | typedef enum | |
6364 | { | |
6365 | catch_fork, catch_vfork | |
6366 | } | |
6367 | catch_fork_kind; | |
6368 | ||
c906108c | 6369 | static void |
fba45db2 KB |
6370 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6371 | int from_tty) | |
c906108c | 6372 | { |
c5aa993b JM |
6373 | char *cond_string = NULL; |
6374 | ||
c906108c | 6375 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6376 | |
c906108c | 6377 | /* The allowed syntax is: |
c5aa993b JM |
6378 | catch [v]fork |
6379 | catch [v]fork if <cond> | |
6380 | ||
c906108c SS |
6381 | First, check if there's an if clause. */ |
6382 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6383 | |
c906108c | 6384 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6385 | error (_("Junk at end of arguments.")); |
c5aa993b | 6386 | |
c906108c SS |
6387 | /* If this target supports it, create a fork or vfork catchpoint |
6388 | and enable reporting of such events. */ | |
c5aa993b JM |
6389 | switch (fork_kind) |
6390 | { | |
6391 | case catch_fork: | |
c906108c SS |
6392 | create_fork_event_catchpoint (tempflag, cond_string); |
6393 | break; | |
c5aa993b | 6394 | case catch_vfork: |
c906108c SS |
6395 | create_vfork_event_catchpoint (tempflag, cond_string); |
6396 | break; | |
c5aa993b | 6397 | default: |
8a3fe4f8 | 6398 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6399 | break; |
c5aa993b | 6400 | } |
c906108c SS |
6401 | } |
6402 | ||
6403 | static void | |
fba45db2 | 6404 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6405 | { |
c5aa993b | 6406 | char *cond_string = NULL; |
c906108c SS |
6407 | |
6408 | ep_skip_leading_whitespace (&arg); | |
6409 | ||
6410 | /* The allowed syntax is: | |
c5aa993b JM |
6411 | catch exec |
6412 | catch exec if <cond> | |
c906108c SS |
6413 | |
6414 | First, check if there's an if clause. */ | |
6415 | cond_string = ep_parse_optional_if_clause (&arg); | |
6416 | ||
6417 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6418 | error (_("Junk at end of arguments.")); |
c906108c SS |
6419 | |
6420 | /* If this target supports it, create an exec catchpoint | |
6421 | and enable reporting of such events. */ | |
6422 | create_exec_event_catchpoint (tempflag, cond_string); | |
6423 | } | |
c5aa993b | 6424 | |
c906108c | 6425 | static void |
fba45db2 | 6426 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6427 | { |
c5aa993b JM |
6428 | char *dll_pathname = NULL; |
6429 | char *cond_string = NULL; | |
6430 | ||
c906108c | 6431 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6432 | |
c906108c | 6433 | /* The allowed syntax is: |
c5aa993b JM |
6434 | catch load |
6435 | catch load if <cond> | |
6436 | catch load <filename> | |
6437 | catch load <filename> if <cond> | |
6438 | ||
c906108c SS |
6439 | The user is not allowed to specify the <filename> after an |
6440 | if clause. | |
c5aa993b | 6441 | |
c906108c | 6442 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6443 | |
c906108c SS |
6444 | First, check if there's an if clause. If so, then there |
6445 | cannot be a filename. */ | |
6446 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6447 | |
c906108c SS |
6448 | /* If there was an if clause, then there cannot be a filename. |
6449 | Else, there might be a filename and an if clause. */ | |
6450 | if (cond_string == NULL) | |
6451 | { | |
6452 | dll_pathname = ep_parse_optional_filename (&arg); | |
6453 | ep_skip_leading_whitespace (&arg); | |
6454 | cond_string = ep_parse_optional_if_clause (&arg); | |
6455 | } | |
c5aa993b | 6456 | |
c906108c | 6457 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6458 | error (_("Junk at end of arguments.")); |
c5aa993b | 6459 | |
c906108c SS |
6460 | /* Create a load breakpoint that only triggers when a load of |
6461 | the specified dll (or any dll, if no pathname was specified) | |
6462 | occurs. */ | |
39f77062 | 6463 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6464 | dll_pathname, cond_string); |
c906108c | 6465 | } |
c5aa993b | 6466 | |
c906108c | 6467 | static void |
fba45db2 | 6468 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6469 | { |
c5aa993b JM |
6470 | char *dll_pathname = NULL; |
6471 | char *cond_string = NULL; | |
6472 | ||
c906108c | 6473 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6474 | |
c906108c | 6475 | /* The allowed syntax is: |
c5aa993b JM |
6476 | catch unload |
6477 | catch unload if <cond> | |
6478 | catch unload <filename> | |
6479 | catch unload <filename> if <cond> | |
6480 | ||
c906108c SS |
6481 | The user is not allowed to specify the <filename> after an |
6482 | if clause. | |
c5aa993b | 6483 | |
c906108c | 6484 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6485 | |
c906108c SS |
6486 | First, check if there's an if clause. If so, then there |
6487 | cannot be a filename. */ | |
6488 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6489 | |
c906108c SS |
6490 | /* If there was an if clause, then there cannot be a filename. |
6491 | Else, there might be a filename and an if clause. */ | |
6492 | if (cond_string == NULL) | |
6493 | { | |
6494 | dll_pathname = ep_parse_optional_filename (&arg); | |
6495 | ep_skip_leading_whitespace (&arg); | |
6496 | cond_string = ep_parse_optional_if_clause (&arg); | |
6497 | } | |
c5aa993b | 6498 | |
c906108c | 6499 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6500 | error (_("Junk at end of arguments.")); |
c5aa993b | 6501 | |
c906108c SS |
6502 | /* Create an unload breakpoint that only triggers when an unload of |
6503 | the specified dll (or any dll, if no pathname was specified) | |
6504 | occurs. */ | |
39f77062 | 6505 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6506 | dll_pathname, cond_string); |
c906108c | 6507 | } |
c906108c | 6508 | |
3086aeae DJ |
6509 | static enum print_stop_action |
6510 | print_exception_catchpoint (struct breakpoint *b) | |
6511 | { | |
ade92717 | 6512 | int bp_temp, bp_throw; |
3086aeae | 6513 | |
ade92717 | 6514 | annotate_catchpoint (b->number); |
3086aeae | 6515 | |
ade92717 AR |
6516 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6517 | if (b->loc->address != b->loc->requested_address) | |
6518 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6519 | b->loc->address, | |
6520 | b->number, 1); | |
6521 | bp_temp = b->loc->owner->disposition == disp_del; | |
6522 | ui_out_text (uiout, | |
6523 | bp_temp ? "Temporary catchpoint " | |
6524 | : "Catchpoint "); | |
6525 | if (!ui_out_is_mi_like_p (uiout)) | |
6526 | ui_out_field_int (uiout, "bkptno", b->number); | |
6527 | ui_out_text (uiout, | |
c0b37c48 AR |
6528 | bp_throw ? " (exception thrown), " |
6529 | : " (exception caught), "); | |
ade92717 AR |
6530 | if (ui_out_is_mi_like_p (uiout)) |
6531 | { | |
6532 | ui_out_field_string (uiout, "reason", | |
6533 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6534 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6535 | ui_out_field_int (uiout, "bkptno", b->number); | |
6536 | } | |
3086aeae DJ |
6537 | return PRINT_SRC_AND_LOC; |
6538 | } | |
6539 | ||
6540 | static void | |
6541 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6542 | { | |
6543 | if (addressprint) | |
6544 | { | |
6545 | annotate_field (4); | |
604133b5 AR |
6546 | if (b->loc == NULL || b->loc->shlib_disabled) |
6547 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6548 | else | |
6549 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6550 | } |
6551 | annotate_field (5); | |
604133b5 AR |
6552 | if (b->loc) |
6553 | *last_addr = b->loc->address; | |
3086aeae DJ |
6554 | if (strstr (b->addr_string, "throw") != NULL) |
6555 | ui_out_field_string (uiout, "what", "exception throw"); | |
6556 | else | |
6557 | ui_out_field_string (uiout, "what", "exception catch"); | |
6558 | } | |
6559 | ||
6560 | static void | |
6561 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6562 | { | |
ade92717 AR |
6563 | int bp_temp; |
6564 | int bp_throw; | |
6565 | ||
6566 | bp_temp = b->loc->owner->disposition == disp_del; | |
6567 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
6568 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6569 | : _("Catchpoint ")); | |
6570 | ui_out_field_int (uiout, "bkptno", b->number); | |
6571 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6572 | : _(" (catch)")); | |
3086aeae DJ |
6573 | } |
6574 | ||
6575 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6576 | print_exception_catchpoint, | |
6577 | print_one_exception_catchpoint, | |
6578 | print_mention_exception_catchpoint | |
6579 | }; | |
6580 | ||
6581 | static int | |
6582 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6583 | enum exception_event_kind ex_event, int from_tty) | |
6584 | { | |
604133b5 AR |
6585 | char *trigger_func_name; |
6586 | ||
3086aeae | 6587 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6588 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6589 | else |
604133b5 | 6590 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6591 | |
604133b5 AR |
6592 | break_command_really (trigger_func_name, cond_string, -1, |
6593 | 0 /* condition and thread are valid. */, | |
ade92717 | 6594 | tempflag, 0, |
604133b5 AR |
6595 | 0, |
6596 | AUTO_BOOLEAN_TRUE /* pending */, | |
6597 | &gnu_v3_exception_catchpoint_ops, from_tty); | |
3086aeae | 6598 | |
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) | |
20874c92 VP |
6982 | if (bs->breakpoint_at |
6983 | && bs->breakpoint_at->owner | |
6984 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 6985 | && bs->stop) |
4f8d1dc6 | 6986 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
6987 | |
6988 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6989 | { |
b5de0fa7 | 6990 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6991 | delete_breakpoint (b); |
6992 | } | |
c906108c SS |
6993 | } |
6994 | ||
0d381245 | 6995 | static void |
74960c60 | 6996 | update_global_location_list (void) |
0d381245 | 6997 | { |
74960c60 VP |
6998 | struct breakpoint *b; |
6999 | struct bp_location **next = &bp_location_chain; | |
7000 | struct bp_location *loc; | |
7001 | struct bp_location *loc2; | |
7002 | struct gdb_exception e; | |
7003 | VEC(bp_location_p) *old_locations = NULL; | |
7004 | int ret; | |
7005 | int ix; | |
7006 | ||
7007 | /* Store old locations for future reference. */ | |
7008 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7009 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7010 | |
74960c60 VP |
7011 | bp_location_chain = NULL; |
7012 | ALL_BREAKPOINTS (b) | |
0d381245 | 7013 | { |
74960c60 | 7014 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7015 | { |
74960c60 VP |
7016 | *next = loc; |
7017 | next = &(loc->global_next); | |
7018 | *next = NULL; | |
0d381245 | 7019 | } |
74960c60 VP |
7020 | } |
7021 | ||
7022 | /* Identify bp_location instances that are no longer present in the new | |
7023 | list, and therefore should be freed. Note that it's not necessary that | |
7024 | those locations should be removed from inferior -- if there's another | |
7025 | location at the same address (previously marked as duplicate), | |
7026 | we don't need to remove/insert the location. */ | |
7027 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7028 | { | |
7029 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7030 | have to free it. */ | |
7031 | int found_object = 0; | |
20874c92 VP |
7032 | /* Tells if the location should remain inserted in the target. */ |
7033 | int keep_in_target = 0; | |
7034 | int removed = 0; | |
74960c60 VP |
7035 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
7036 | if (loc2 == loc) | |
7037 | { | |
7038 | found_object = 1; | |
7039 | break; | |
7040 | } | |
7041 | ||
7042 | /* If this location is no longer present, and inserted, look if there's | |
7043 | maybe a new location at the same address. If so, mark that one | |
7044 | inserted, and don't remove this one. This is needed so that we | |
7045 | don't have a time window where a breakpoint at certain location is not | |
7046 | inserted. */ | |
7047 | ||
7048 | if (loc->inserted) | |
0d381245 | 7049 | { |
74960c60 | 7050 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
7051 | |
7052 | if (found_object && should_be_inserted (loc)) | |
7053 | { | |
7054 | /* The location is still present in the location list, and still | |
7055 | should be inserted. Don't do anything. */ | |
20874c92 | 7056 | keep_in_target = 1; |
74960c60 VP |
7057 | } |
7058 | else | |
7059 | { | |
7060 | /* The location is either no longer present, or got disabled. | |
7061 | See if there's another location at the same address, in which | |
7062 | case we don't need to remove this one from the target. */ | |
7063 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7064 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7065 | { | |
7066 | /* For the sake of should_insert_location. The | |
7067 | call to check_duplicates will fix up this later. */ | |
7068 | loc2->duplicate = 0; | |
7069 | if (should_be_inserted (loc2) | |
7070 | && loc2 != loc && loc2->address == loc->address) | |
7071 | { | |
7072 | loc2->inserted = 1; | |
7073 | loc2->target_info = loc->target_info; | |
20874c92 | 7074 | keep_in_target = 1; |
74960c60 VP |
7075 | break; |
7076 | } | |
7077 | } | |
7078 | } | |
7079 | ||
20874c92 VP |
7080 | if (!keep_in_target) |
7081 | { | |
7082 | if (remove_breakpoint (loc, mark_uninserted)) | |
7083 | { | |
7084 | /* This is just about all we can do. We could keep this | |
7085 | location on the global list, and try to remove it next | |
7086 | time, but there's no particular reason why we will | |
7087 | succeed next time. | |
7088 | ||
7089 | Note that at this point, loc->owner is still valid, | |
7090 | as delete_breakpoint frees the breakpoint only | |
7091 | after calling us. */ | |
7092 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7093 | loc->owner->number); | |
7094 | } | |
7095 | removed = 1; | |
7096 | } | |
0d381245 | 7097 | } |
74960c60 VP |
7098 | |
7099 | if (!found_object) | |
20874c92 VP |
7100 | { |
7101 | if (removed) | |
7102 | { | |
7103 | /* This location was removed from the targets. In non-stop mode, | |
7104 | a race condition is possible where we've removed a breakpoint, | |
7105 | but stop events for that breakpoint are already queued and will | |
7106 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7107 | we keep this breakpoint location for a bit, and will retire it | |
7108 | after we see 3 * thread_count events. | |
7109 | The theory here is that reporting of events should, | |
7110 | "on the average", be fair, so after that many event we'll see | |
7111 | events from all threads that have anything of interest, and no | |
7112 | longer need to keep this breakpoint. This is just a | |
7113 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, | |
7114 | which is usability issue, but not a correctness problem. */ | |
7115 | loc->events_till_retirement = 3 * (thread_count () + 1); | |
7116 | loc->owner = NULL; | |
7117 | } | |
7118 | ||
7119 | free_bp_location (loc); | |
7120 | } | |
74960c60 VP |
7121 | } |
7122 | ||
7123 | ALL_BREAKPOINTS (b) | |
7124 | { | |
7125 | check_duplicates (b); | |
0d381245 | 7126 | } |
74960c60 VP |
7127 | |
7128 | if (always_inserted_mode && target_has_execution) | |
7129 | insert_breakpoint_locations (); | |
7130 | } | |
7131 | ||
20874c92 VP |
7132 | void |
7133 | breakpoint_retire_moribund (void) | |
7134 | { | |
7135 | struct bp_location *loc; | |
7136 | int ix; | |
7137 | ||
7138 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7139 | if (--(loc->events_till_retirement) == 0) | |
7140 | { | |
7141 | free_bp_location (loc); | |
7142 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7143 | --ix; | |
7144 | } | |
7145 | } | |
7146 | ||
74960c60 VP |
7147 | static void |
7148 | update_global_location_list_nothrow (void) | |
7149 | { | |
7150 | struct gdb_exception e; | |
7151 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7152 | update_global_location_list (); | |
0d381245 VP |
7153 | } |
7154 | ||
53a5351d JM |
7155 | /* Delete a breakpoint and clean up all traces of it in the data |
7156 | structures. */ | |
c906108c SS |
7157 | |
7158 | void | |
fba45db2 | 7159 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7160 | { |
52f0bd74 AC |
7161 | struct breakpoint *b; |
7162 | bpstat bs; | |
74960c60 | 7163 | struct bp_location *loc, *next; |
c906108c | 7164 | |
8a3fe4f8 | 7165 | gdb_assert (bpt != NULL); |
c906108c SS |
7166 | |
7167 | /* Has this bp already been deleted? This can happen because multiple | |
7168 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7169 | ||
7170 | One example of this happening is a watchpoint's scope bp. When the | |
7171 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7172 | delete it. We also delete its scope bp. But the scope bp is marked | |
7173 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7174 | checked for auto-deleting bp's, which are deleted. | |
7175 | ||
7176 | A real solution to this problem might involve reference counts in bp's, | |
7177 | and/or giving them pointers back to their referencing bpstat's, and | |
7178 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7179 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7180 | if (bpt->type == bp_none) |
7181 | return; | |
7182 | ||
9a4105ab AC |
7183 | if (deprecated_delete_breakpoint_hook) |
7184 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 7185 | breakpoint_delete_event (bpt->number); |
c906108c | 7186 | |
c906108c SS |
7187 | if (breakpoint_chain == bpt) |
7188 | breakpoint_chain = bpt->next; | |
7189 | ||
c906108c SS |
7190 | ALL_BREAKPOINTS (b) |
7191 | if (b->next == bpt) | |
c5aa993b JM |
7192 | { |
7193 | b->next = bpt->next; | |
7194 | break; | |
7195 | } | |
c906108c | 7196 | |
c906108c | 7197 | free_command_lines (&bpt->commands); |
c906108c | 7198 | if (bpt->cond_string != NULL) |
b8c9b27d | 7199 | xfree (bpt->cond_string); |
c906108c | 7200 | if (bpt->addr_string != NULL) |
b8c9b27d | 7201 | xfree (bpt->addr_string); |
c906108c | 7202 | if (bpt->exp != NULL) |
b8c9b27d | 7203 | xfree (bpt->exp); |
c906108c | 7204 | if (bpt->exp_string != NULL) |
b8c9b27d | 7205 | xfree (bpt->exp_string); |
c906108c SS |
7206 | if (bpt->val != NULL) |
7207 | value_free (bpt->val); | |
7208 | if (bpt->source_file != NULL) | |
b8c9b27d | 7209 | xfree (bpt->source_file); |
c906108c | 7210 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7211 | xfree (bpt->dll_pathname); |
c906108c | 7212 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7213 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7214 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7215 | xfree (bpt->exec_pathname); |
c906108c SS |
7216 | |
7217 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7218 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7219 | We just check stop_bpstat for now. Note that we cannot just |
7220 | remove bpstats pointing at bpt from the stop_bpstat list | |
7221 | entirely, as breakpoint commands are associated with the bpstat; | |
7222 | if we remove it here, then the later call to | |
7223 | bpstat_do_actions (&stop_bpstat); | |
7224 | in event-top.c won't do anything, and temporary breakpoints | |
7225 | with commands won't work. */ | |
c906108c | 7226 | for (bs = stop_bpstat; bs; bs = bs->next) |
4f8d1dc6 | 7227 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) |
c906108c SS |
7228 | { |
7229 | bs->breakpoint_at = NULL; | |
c906108c | 7230 | bs->old_val = NULL; |
c2b8ed2c | 7231 | /* bs->commands will be freed later. */ |
c906108c | 7232 | } |
74960c60 VP |
7233 | |
7234 | /* Now that breakpoint is removed from breakpoint | |
7235 | list, update the global location list. This | |
7236 | will remove locations that used to belong to | |
7237 | this breakpoint. Do this before freeing | |
7238 | the breakpoint itself, since remove_breakpoint | |
7239 | looks at location's owner. It might be better | |
7240 | design to have location completely self-contained, | |
7241 | but it's not the case now. */ | |
7242 | update_global_location_list (); | |
7243 | ||
7244 | ||
c906108c SS |
7245 | /* On the chance that someone will soon try again to delete this same |
7246 | bp, we mark it as deleted before freeing its storage. */ | |
7247 | bpt->type = bp_none; | |
7248 | ||
b8c9b27d | 7249 | xfree (bpt); |
c906108c SS |
7250 | } |
7251 | ||
4d6140d9 AC |
7252 | static void |
7253 | do_delete_breakpoint_cleanup (void *b) | |
7254 | { | |
7255 | delete_breakpoint (b); | |
7256 | } | |
7257 | ||
7258 | struct cleanup * | |
7259 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7260 | { | |
7261 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7262 | } | |
7263 | ||
c906108c | 7264 | void |
fba45db2 | 7265 | delete_command (char *arg, int from_tty) |
c906108c SS |
7266 | { |
7267 | struct breakpoint *b, *temp; | |
7268 | ||
ea9365bb TT |
7269 | dont_repeat (); |
7270 | ||
c906108c SS |
7271 | if (arg == 0) |
7272 | { | |
7273 | int breaks_to_delete = 0; | |
7274 | ||
7275 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7276 | Do not delete internal or call-dummy breakpoints, these |
7277 | have to be deleted with an explicit breakpoint number argument. */ | |
7278 | ALL_BREAKPOINTS (b) | |
7279 | { | |
7280 | if (b->type != bp_call_dummy && | |
7281 | b->type != bp_shlib_event && | |
c4093a6a | 7282 | b->type != bp_thread_event && |
1900040c | 7283 | b->type != bp_overlay_event && |
c5aa993b | 7284 | b->number >= 0) |
973d738b DJ |
7285 | { |
7286 | breaks_to_delete = 1; | |
7287 | break; | |
7288 | } | |
c5aa993b | 7289 | } |
c906108c SS |
7290 | |
7291 | /* Ask user only if there are some breakpoints to delete. */ | |
7292 | if (!from_tty | |
e2e0b3e5 | 7293 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7294 | { |
c5aa993b JM |
7295 | ALL_BREAKPOINTS_SAFE (b, temp) |
7296 | { | |
7297 | if (b->type != bp_call_dummy && | |
7298 | b->type != bp_shlib_event && | |
c4093a6a | 7299 | b->type != bp_thread_event && |
1900040c | 7300 | b->type != bp_overlay_event && |
c5aa993b JM |
7301 | b->number >= 0) |
7302 | delete_breakpoint (b); | |
7303 | } | |
c906108c SS |
7304 | } |
7305 | } | |
7306 | else | |
7307 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7308 | } | |
7309 | ||
0d381245 VP |
7310 | static int |
7311 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7312 | { |
0d381245 VP |
7313 | for (; loc; loc = loc->next) |
7314 | if (!loc->shlib_disabled) | |
7315 | return 0; | |
7316 | return 1; | |
fe3f5fa8 VP |
7317 | } |
7318 | ||
776592bf DE |
7319 | /* Subroutine of update_breakpoint_locations to simplify it. |
7320 | Return non-zero if multiple fns in list LOC have the same name. | |
7321 | Null names are ignored. */ | |
7322 | ||
7323 | static int | |
7324 | ambiguous_names_p (struct bp_location *loc) | |
7325 | { | |
7326 | struct bp_location *l; | |
7327 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7328 | (int (*) (const void *, const void *)) streq, | |
7329 | NULL, xcalloc, xfree); | |
7330 | ||
7331 | for (l = loc; l != NULL; l = l->next) | |
7332 | { | |
7333 | const char **slot; | |
7334 | const char *name = l->function_name; | |
7335 | ||
7336 | /* Allow for some names to be NULL, ignore them. */ | |
7337 | if (name == NULL) | |
7338 | continue; | |
7339 | ||
7340 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7341 | INSERT); | |
7342 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7343 | NULL. */ | |
7344 | if (*slot != NULL) | |
7345 | { | |
7346 | htab_delete (htab); | |
7347 | return 1; | |
7348 | } | |
7349 | *slot = name; | |
7350 | } | |
7351 | ||
7352 | htab_delete (htab); | |
7353 | return 0; | |
7354 | } | |
7355 | ||
fe3f5fa8 | 7356 | static void |
0d381245 VP |
7357 | update_breakpoint_locations (struct breakpoint *b, |
7358 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7359 | { |
7360 | int i; | |
7361 | char *s; | |
0d381245 VP |
7362 | struct bp_location *existing_locations = b->loc; |
7363 | ||
7364 | /* If there's no new locations, and all existing locations | |
7365 | are pending, don't do anything. This optimizes | |
7366 | the common case where all locations are in the same | |
7367 | shared library, that was unloaded. We'd like to | |
7368 | retain the location, so that when the library | |
7369 | is loaded again, we don't loose the enabled/disabled | |
7370 | status of the individual locations. */ | |
7371 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7372 | return; |
7373 | ||
fe3f5fa8 VP |
7374 | b->loc = NULL; |
7375 | ||
0d381245 | 7376 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7377 | { |
0d381245 VP |
7378 | struct bp_location *new_loc = |
7379 | add_location_to_breakpoint (b, b->type, &(sals.sals[i])); | |
fe3f5fa8 | 7380 | |
0d381245 VP |
7381 | /* Reparse conditions, they might contain references to the |
7382 | old symtab. */ | |
7383 | if (b->cond_string != NULL) | |
7384 | { | |
7385 | struct gdb_exception e; | |
fe3f5fa8 | 7386 | |
0d381245 VP |
7387 | s = b->cond_string; |
7388 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7389 | { | |
7390 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7391 | 0); | |
7392 | } | |
7393 | if (e.reason < 0) | |
7394 | { | |
7395 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7396 | b->number, e.message); | |
7397 | new_loc->enabled = 0; | |
7398 | } | |
7399 | } | |
fe3f5fa8 | 7400 | |
0d381245 VP |
7401 | if (b->source_file != NULL) |
7402 | xfree (b->source_file); | |
7403 | if (sals.sals[i].symtab == NULL) | |
7404 | b->source_file = NULL; | |
7405 | else | |
7406 | b->source_file = | |
7407 | savestring (sals.sals[i].symtab->filename, | |
7408 | strlen (sals.sals[i].symtab->filename)); | |
fe3f5fa8 | 7409 | |
0d381245 VP |
7410 | if (b->line_number == 0) |
7411 | b->line_number = sals.sals[i].line; | |
7412 | } | |
fe3f5fa8 | 7413 | |
0d381245 VP |
7414 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7415 | { | |
7416 | struct bp_location *e = existing_locations; | |
776592bf DE |
7417 | /* If there are multiple breakpoints with the same function name, |
7418 | e.g. for inline functions, comparing function names won't work. | |
7419 | Instead compare pc addresses; this is just a heuristic as things | |
7420 | may have moved, but in practice it gives the correct answer | |
7421 | often enough until a better solution is found. */ | |
7422 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7423 | ||
0d381245 VP |
7424 | for (; e; e = e->next) |
7425 | { | |
7426 | if (!e->enabled && e->function_name) | |
7427 | { | |
7428 | struct bp_location *l = b->loc; | |
776592bf DE |
7429 | if (have_ambiguous_names) |
7430 | { | |
7431 | for (; l; l = l->next) | |
7432 | if (e->address == l->address) | |
7433 | { | |
7434 | l->enabled = 0; | |
7435 | break; | |
7436 | } | |
7437 | } | |
7438 | else | |
7439 | { | |
7440 | for (; l; l = l->next) | |
7441 | if (l->function_name | |
7442 | && strcmp (e->function_name, l->function_name) == 0) | |
7443 | { | |
7444 | l->enabled = 0; | |
7445 | break; | |
7446 | } | |
7447 | } | |
0d381245 VP |
7448 | } |
7449 | } | |
7450 | } | |
fe3f5fa8 | 7451 | |
74960c60 | 7452 | update_global_location_list (); |
fe3f5fa8 VP |
7453 | } |
7454 | ||
7455 | ||
c906108c SS |
7456 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7457 | The value we return ends up being the return value from catch_errors. | |
7458 | Unused in this case. */ | |
7459 | ||
7460 | static int | |
4efb68b1 | 7461 | breakpoint_re_set_one (void *bint) |
c906108c | 7462 | { |
53a5351d JM |
7463 | /* get past catch_errs */ |
7464 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7465 | struct value *mark; |
7466 | int i; | |
fe3f5fa8 VP |
7467 | int not_found = 0; |
7468 | int *not_found_ptr = ¬_found; | |
7469 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7470 | struct symtabs_and_lines expanded; |
c906108c | 7471 | char *s; |
b5de0fa7 | 7472 | enum enable_state save_enable; |
fe3f5fa8 VP |
7473 | struct gdb_exception e; |
7474 | ||
c906108c SS |
7475 | |
7476 | switch (b->type) | |
7477 | { | |
7478 | case bp_none: | |
8a3fe4f8 | 7479 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7480 | b->number); |
c906108c SS |
7481 | return 0; |
7482 | case bp_breakpoint: | |
7483 | case bp_hardware_breakpoint: | |
7484 | case bp_catch_load: | |
7485 | case bp_catch_unload: | |
7486 | if (b->addr_string == NULL) | |
7487 | { | |
7488 | /* Anything without a string can't be re-set. */ | |
7489 | delete_breakpoint (b); | |
7490 | return 0; | |
7491 | } | |
c906108c SS |
7492 | |
7493 | set_language (b->language); | |
7494 | input_radix = b->input_radix; | |
7495 | s = b->addr_string; | |
fe3f5fa8 | 7496 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7497 | { |
fe3f5fa8 VP |
7498 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7499 | not_found_ptr); | |
7500 | } | |
7501 | if (e.reason < 0) | |
7502 | { | |
7503 | int not_found_and_ok = 0; | |
7504 | /* For pending breakpoints, it's expected that parsing | |
7505 | will fail until the right shared library is loaded. | |
7506 | User has already told to create pending breakpoints and | |
7507 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7508 | state, then user already saw the message about that breakpoint | |
7509 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7510 | if (not_found |
7511 | && (b->condition_not_parsed | |
7512 | || (b->loc && b->loc->shlib_disabled) | |
7513 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7514 | not_found_and_ok = 1; |
7515 | ||
7516 | if (!not_found_and_ok) | |
c906108c | 7517 | { |
fe3f5fa8 VP |
7518 | /* We surely don't want to warn about the same breakpoint |
7519 | 10 times. One solution, implemented here, is disable | |
7520 | the breakpoint on error. Another solution would be to | |
7521 | have separate 'warning emitted' flag. Since this | |
7522 | happens only when a binary has changed, I don't know | |
7523 | which approach is better. */ | |
7524 | b->enable_state = bp_disabled; | |
7525 | throw_exception (e); | |
c906108c | 7526 | } |
fe3f5fa8 | 7527 | } |
c906108c | 7528 | |
fe3f5fa8 VP |
7529 | if (not_found) |
7530 | break; | |
7531 | ||
7532 | gdb_assert (sals.nelts == 1); | |
7533 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7534 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7535 | { |
7536 | char *cond_string = 0; | |
7537 | int thread = -1; | |
7538 | find_condition_and_thread (s, sals.sals[0].pc, | |
7539 | &cond_string, &thread); | |
7540 | if (cond_string) | |
7541 | b->cond_string = cond_string; | |
7542 | b->thread = thread; | |
0d381245 | 7543 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7544 | } |
ed0616c6 VP |
7545 | expanded = expand_line_sal_maybe (sals.sals[0]); |
7546 | update_breakpoint_locations (b, expanded); | |
0d381245 | 7547 | |
b8c9b27d | 7548 | xfree (sals.sals); |
c906108c SS |
7549 | break; |
7550 | ||
7551 | case bp_watchpoint: | |
7552 | case bp_hardware_watchpoint: | |
7553 | case bp_read_watchpoint: | |
7554 | case bp_access_watchpoint: | |
0b3de036 VP |
7555 | /* Watchpoint can be either on expression using entirely global variables, |
7556 | or it can be on local variables. | |
7557 | ||
7558 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7559 | across program restarts. Since they can use variables from shared | |
7560 | libraries, we need to reparse expression as libraries are loaded | |
7561 | and unloaded. | |
7562 | ||
7563 | Watchpoints on local variables can also change meaning as result | |
7564 | of solib event. For example, if a watchpoint uses both a local and | |
7565 | a global variables in expression, it's a local watchpoint, but | |
7566 | unloading of a shared library will make the expression invalid. | |
7567 | This is not a very common use case, but we still re-evaluate | |
7568 | expression, to avoid surprises to the user. | |
7569 | ||
7570 | Note that for local watchpoints, we re-evaluate it only if | |
7571 | watchpoints frame id is still valid. If it's not, it means | |
7572 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7573 | I'm not sure we'll ever be called in this case. | |
7574 | ||
7575 | If a local watchpoint's frame id is still valid, then | |
7576 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7577 | ||
7578 | Don't do anything about disabled watchpoints, since they will | |
7579 | be reevaluated again when enabled. */ | |
a5606eee | 7580 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7581 | break; |
c5aa993b JM |
7582 | /* We needn't really do anything to reset these, since the mask |
7583 | that requests them is unaffected by e.g., new libraries being | |
7584 | loaded. */ | |
c906108c SS |
7585 | case bp_catch_fork: |
7586 | case bp_catch_vfork: | |
7587 | case bp_catch_exec: | |
7588 | break; | |
c5aa993b | 7589 | |
c906108c | 7590 | default: |
a3f17187 | 7591 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7592 | /* fall through */ |
611c83ae PA |
7593 | /* Delete overlay event breakpoints; they will be reset later by |
7594 | breakpoint_re_set. */ | |
1900040c | 7595 | case bp_overlay_event: |
c906108c SS |
7596 | delete_breakpoint (b); |
7597 | break; | |
7598 | ||
c5aa993b JM |
7599 | /* This breakpoint is special, it's set up when the inferior |
7600 | starts and we really don't want to touch it. */ | |
c906108c SS |
7601 | case bp_shlib_event: |
7602 | ||
c4093a6a JM |
7603 | /* Like bp_shlib_event, this breakpoint type is special. |
7604 | Once it is set up, we do not want to touch it. */ | |
7605 | case bp_thread_event: | |
7606 | ||
c5aa993b JM |
7607 | /* Keep temporary breakpoints, which can be encountered when we step |
7608 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7609 | Otherwise these should have been blown away via the cleanup chain | |
7610 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7611 | case bp_until: |
7612 | case bp_finish: | |
7613 | case bp_watchpoint_scope: | |
7614 | case bp_call_dummy: | |
7615 | case bp_step_resume: | |
611c83ae PA |
7616 | case bp_longjmp: |
7617 | case bp_longjmp_resume: | |
c906108c SS |
7618 | break; |
7619 | } | |
7620 | ||
7621 | return 0; | |
7622 | } | |
7623 | ||
7624 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7625 | void | |
fba45db2 | 7626 | breakpoint_re_set (void) |
c906108c SS |
7627 | { |
7628 | struct breakpoint *b, *temp; | |
7629 | enum language save_language; | |
7630 | int save_input_radix; | |
c5aa993b | 7631 | |
c906108c SS |
7632 | save_language = current_language->la_language; |
7633 | save_input_radix = input_radix; | |
7634 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7635 | { |
53a5351d | 7636 | /* Format possible error msg */ |
fe3f5fa8 | 7637 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7638 | b->number); |
7639 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7640 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7641 | do_cleanups (cleanups); |
c5aa993b | 7642 | } |
c906108c SS |
7643 | set_language (save_language); |
7644 | input_radix = save_input_radix; | |
1900040c MS |
7645 | |
7646 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7647 | } |
7648 | \f | |
c906108c SS |
7649 | /* Reset the thread number of this breakpoint: |
7650 | ||
7651 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7652 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7653 | void |
fba45db2 | 7654 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7655 | { |
7656 | if (b->thread != -1) | |
7657 | { | |
39f77062 KB |
7658 | if (in_thread_list (inferior_ptid)) |
7659 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7660 | } |
7661 | } | |
7662 | ||
03ac34d5 MS |
7663 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7664 | If from_tty is nonzero, it prints a message to that effect, | |
7665 | which ends with a period (no newline). */ | |
7666 | ||
c906108c | 7667 | void |
fba45db2 | 7668 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7669 | { |
52f0bd74 | 7670 | struct breakpoint *b; |
c906108c SS |
7671 | |
7672 | if (count < 0) | |
7673 | count = 0; | |
7674 | ||
7675 | ALL_BREAKPOINTS (b) | |
7676 | if (b->number == bptnum) | |
c5aa993b JM |
7677 | { |
7678 | b->ignore_count = count; | |
221ea385 KS |
7679 | if (from_tty) |
7680 | { | |
7681 | if (count == 0) | |
a3f17187 | 7682 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7683 | bptnum); |
7684 | else if (count == 1) | |
a3f17187 | 7685 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7686 | bptnum); |
7687 | else | |
a3f17187 | 7688 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7689 | count, bptnum); |
7690 | } | |
c5aa993b | 7691 | breakpoints_changed (); |
221ea385 | 7692 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7693 | return; |
7694 | } | |
c906108c | 7695 | |
8a3fe4f8 | 7696 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7697 | } |
7698 | ||
7699 | /* Clear the ignore counts of all breakpoints. */ | |
7700 | void | |
fba45db2 | 7701 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7702 | { |
7703 | struct breakpoint *b; | |
7704 | ||
7705 | ALL_BREAKPOINTS (b) | |
7706 | b->ignore_count = 0; | |
7707 | } | |
7708 | ||
7709 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7710 | ||
7711 | static void | |
fba45db2 | 7712 | ignore_command (char *args, int from_tty) |
c906108c SS |
7713 | { |
7714 | char *p = args; | |
52f0bd74 | 7715 | int num; |
c906108c SS |
7716 | |
7717 | if (p == 0) | |
e2e0b3e5 | 7718 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7719 | |
c906108c | 7720 | num = get_number (&p); |
5c44784c | 7721 | if (num == 0) |
8a3fe4f8 | 7722 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7723 | if (*p == 0) |
8a3fe4f8 | 7724 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7725 | |
7726 | set_ignore_count (num, | |
7727 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7728 | from_tty); | |
221ea385 KS |
7729 | if (from_tty) |
7730 | printf_filtered ("\n"); | |
c906108c SS |
7731 | } |
7732 | \f | |
7733 | /* Call FUNCTION on each of the breakpoints | |
7734 | whose numbers are given in ARGS. */ | |
7735 | ||
7736 | static void | |
831662b3 | 7737 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7738 | { |
52f0bd74 | 7739 | char *p = args; |
c906108c | 7740 | char *p1; |
52f0bd74 AC |
7741 | int num; |
7742 | struct breakpoint *b, *tmp; | |
11cf8741 | 7743 | int match; |
c906108c SS |
7744 | |
7745 | if (p == 0) | |
e2e0b3e5 | 7746 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7747 | |
7748 | while (*p) | |
7749 | { | |
11cf8741 | 7750 | match = 0; |
c906108c | 7751 | p1 = p; |
c5aa993b | 7752 | |
5c44784c JM |
7753 | num = get_number_or_range (&p1); |
7754 | if (num == 0) | |
c5aa993b | 7755 | { |
8a3fe4f8 | 7756 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7757 | } |
7758 | else | |
7759 | { | |
7760 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7761 | if (b->number == num) | |
7762 | { | |
7763 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7764 | match = 1; |
5c44784c JM |
7765 | function (b); |
7766 | if (related_breakpoint) | |
7767 | function (related_breakpoint); | |
11cf8741 | 7768 | break; |
5c44784c | 7769 | } |
11cf8741 | 7770 | if (match == 0) |
a3f17187 | 7771 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7772 | } |
c906108c SS |
7773 | p = p1; |
7774 | } | |
7775 | } | |
7776 | ||
0d381245 VP |
7777 | static struct bp_location * |
7778 | find_location_by_number (char *number) | |
7779 | { | |
7780 | char *dot = strchr (number, '.'); | |
7781 | char *p1; | |
7782 | int bp_num; | |
7783 | int loc_num; | |
7784 | struct breakpoint *b; | |
7785 | struct bp_location *loc; | |
7786 | ||
7787 | *dot = '\0'; | |
7788 | ||
7789 | p1 = number; | |
7790 | bp_num = get_number_or_range (&p1); | |
7791 | if (bp_num == 0) | |
7792 | error (_("Bad breakpoint number '%s'"), number); | |
7793 | ||
7794 | ALL_BREAKPOINTS (b) | |
7795 | if (b->number == bp_num) | |
7796 | { | |
7797 | break; | |
7798 | } | |
7799 | ||
7800 | if (!b || b->number != bp_num) | |
7801 | error (_("Bad breakpoint number '%s'"), number); | |
7802 | ||
7803 | p1 = dot+1; | |
7804 | loc_num = get_number_or_range (&p1); | |
7805 | if (loc_num == 0) | |
7806 | error (_("Bad breakpoint location number '%s'"), number); | |
7807 | ||
7808 | --loc_num; | |
7809 | loc = b->loc; | |
7810 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7811 | ; | |
7812 | if (!loc) | |
7813 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7814 | ||
7815 | return loc; | |
7816 | } | |
7817 | ||
7818 | ||
1900040c MS |
7819 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7820 | If from_tty is nonzero, it prints a message to that effect, | |
7821 | which ends with a period (no newline). */ | |
7822 | ||
c906108c | 7823 | void |
fba45db2 | 7824 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7825 | { |
7826 | /* Never disable a watchpoint scope breakpoint; we want to | |
7827 | hit them when we leave scope so we can delete both the | |
7828 | watchpoint and its scope breakpoint at that time. */ | |
7829 | if (bpt->type == bp_watchpoint_scope) | |
7830 | return; | |
7831 | ||
c2c6d25f | 7832 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7833 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7834 | return; |
7835 | ||
b5de0fa7 | 7836 | bpt->enable_state = bp_disabled; |
c906108c | 7837 | |
74960c60 | 7838 | update_global_location_list (); |
c906108c | 7839 | |
9a4105ab AC |
7840 | if (deprecated_modify_breakpoint_hook) |
7841 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7842 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7843 | } |
7844 | ||
c906108c | 7845 | static void |
fba45db2 | 7846 | disable_command (char *args, int from_tty) |
c906108c | 7847 | { |
52f0bd74 | 7848 | struct breakpoint *bpt; |
c906108c SS |
7849 | if (args == 0) |
7850 | ALL_BREAKPOINTS (bpt) | |
7851 | switch (bpt->type) | |
c5aa993b JM |
7852 | { |
7853 | case bp_none: | |
8a3fe4f8 | 7854 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7855 | bpt->number); |
c5aa993b JM |
7856 | continue; |
7857 | case bp_breakpoint: | |
7858 | case bp_catch_load: | |
7859 | case bp_catch_unload: | |
7860 | case bp_catch_fork: | |
7861 | case bp_catch_vfork: | |
7862 | case bp_catch_exec: | |
c5aa993b JM |
7863 | case bp_hardware_breakpoint: |
7864 | case bp_watchpoint: | |
7865 | case bp_hardware_watchpoint: | |
7866 | case bp_read_watchpoint: | |
7867 | case bp_access_watchpoint: | |
7868 | disable_breakpoint (bpt); | |
7869 | default: | |
7870 | continue; | |
7871 | } | |
0d381245 VP |
7872 | else if (strchr (args, '.')) |
7873 | { | |
7874 | struct bp_location *loc = find_location_by_number (args); | |
7875 | if (loc) | |
7876 | loc->enabled = 0; | |
74960c60 | 7877 | update_global_location_list (); |
0d381245 | 7878 | } |
c906108c SS |
7879 | else |
7880 | map_breakpoint_numbers (args, disable_breakpoint); | |
7881 | } | |
7882 | ||
7883 | static void | |
fba45db2 | 7884 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7885 | { |
c906108c SS |
7886 | int target_resources_ok, other_type_used; |
7887 | struct value *mark; | |
7888 | ||
7889 | if (bpt->type == bp_hardware_breakpoint) | |
7890 | { | |
7891 | int i; | |
c5aa993b | 7892 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7893 | target_resources_ok = |
7894 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7895 | i + 1, 0); | |
c906108c | 7896 | if (target_resources_ok == 0) |
8a3fe4f8 | 7897 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7898 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7899 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7900 | } |
7901 | ||
fe3f5fa8 VP |
7902 | if (bpt->type == bp_watchpoint || |
7903 | bpt->type == bp_hardware_watchpoint || | |
7904 | bpt->type == bp_read_watchpoint || | |
7905 | bpt->type == bp_access_watchpoint) | |
c906108c | 7906 | { |
fe3f5fa8 VP |
7907 | struct frame_id saved_frame_id; |
7908 | ||
7909 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
7910 | if (bpt->exp_valid_block != NULL) | |
c906108c | 7911 | { |
fe3f5fa8 VP |
7912 | struct frame_info *fr = |
7913 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7914 | if (fr == NULL) | |
c906108c | 7915 | { |
fe3f5fa8 VP |
7916 | printf_filtered (_("\ |
7917 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7918 | is valid is not currently in scope.\n"), bpt->number); | |
c906108c SS |
7919 | return; |
7920 | } | |
fe3f5fa8 | 7921 | select_frame (fr); |
c906108c | 7922 | } |
0101ce28 | 7923 | |
b4c291bb KH |
7924 | if (bpt->val) |
7925 | value_free (bpt->val); | |
fe3f5fa8 | 7926 | mark = value_mark (); |
fa4727a6 DJ |
7927 | fetch_watchpoint_value (bpt->exp, &bpt->val, NULL, NULL); |
7928 | if (bpt->val) | |
7929 | release_value (bpt->val); | |
7930 | bpt->val_valid = 1; | |
7931 | ||
fe3f5fa8 VP |
7932 | if (bpt->type == bp_hardware_watchpoint || |
7933 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7934 | bpt->type == bp_access_watchpoint) |
7935 | { | |
fe3f5fa8 VP |
7936 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7937 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
0101ce28 | 7938 | |
fe3f5fa8 VP |
7939 | /* Hack around 'unused var' error for some targets here */ |
7940 | (void) mem_cnt, (void) i; | |
7941 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7942 | bpt->type, i + mem_cnt, other_type_used); | |
7943 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7944 | bp_watchpoint in the following condition */ | |
7945 | if (target_resources_ok < 0) | |
c5aa993b | 7946 | { |
fe3f5fa8 | 7947 | printf_filtered (_("\ |
c906108c | 7948 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 7949 | have been allocated for other watchpoints.\n"), bpt->number); |
fe3f5fa8 VP |
7950 | value_free_to_mark (mark); |
7951 | return; | |
c5aa993b JM |
7952 | } |
7953 | } | |
fe3f5fa8 VP |
7954 | |
7955 | select_frame (frame_find_by_id (saved_frame_id)); | |
7956 | value_free_to_mark (mark); | |
c906108c | 7957 | } |
0101ce28 | 7958 | |
b4c291bb KH |
7959 | if (bpt->enable_state != bp_permanent) |
7960 | bpt->enable_state = bp_enabled; | |
7961 | bpt->disposition = disposition; | |
74960c60 | 7962 | update_global_location_list (); |
b4c291bb KH |
7963 | breakpoints_changed (); |
7964 | ||
9a4105ab AC |
7965 | if (deprecated_modify_breakpoint_hook) |
7966 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7967 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7968 | } |
7969 | ||
fe3f5fa8 | 7970 | |
c906108c | 7971 | void |
fba45db2 | 7972 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7973 | { |
7974 | do_enable_breakpoint (bpt, bpt->disposition); | |
7975 | } | |
7976 | ||
7977 | /* The enable command enables the specified breakpoints (or all defined | |
7978 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7979 | in stopping the inferior. */ |
c906108c | 7980 | |
c906108c | 7981 | static void |
fba45db2 | 7982 | enable_command (char *args, int from_tty) |
c906108c | 7983 | { |
52f0bd74 | 7984 | struct breakpoint *bpt; |
c906108c SS |
7985 | if (args == 0) |
7986 | ALL_BREAKPOINTS (bpt) | |
7987 | switch (bpt->type) | |
c5aa993b JM |
7988 | { |
7989 | case bp_none: | |
8a3fe4f8 | 7990 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 7991 | bpt->number); |
c5aa993b JM |
7992 | continue; |
7993 | case bp_breakpoint: | |
7994 | case bp_catch_load: | |
7995 | case bp_catch_unload: | |
7996 | case bp_catch_fork: | |
7997 | case bp_catch_vfork: | |
7998 | case bp_catch_exec: | |
c5aa993b JM |
7999 | case bp_hardware_breakpoint: |
8000 | case bp_watchpoint: | |
8001 | case bp_hardware_watchpoint: | |
8002 | case bp_read_watchpoint: | |
8003 | case bp_access_watchpoint: | |
8004 | enable_breakpoint (bpt); | |
8005 | default: | |
8006 | continue; | |
8007 | } | |
0d381245 VP |
8008 | else if (strchr (args, '.')) |
8009 | { | |
8010 | struct bp_location *loc = find_location_by_number (args); | |
8011 | if (loc) | |
8012 | loc->enabled = 1; | |
74960c60 | 8013 | update_global_location_list (); |
0d381245 | 8014 | } |
c906108c SS |
8015 | else |
8016 | map_breakpoint_numbers (args, enable_breakpoint); | |
8017 | } | |
8018 | ||
8019 | static void | |
fba45db2 | 8020 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 8021 | { |
b5de0fa7 | 8022 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
8023 | } |
8024 | ||
c906108c | 8025 | static void |
fba45db2 | 8026 | enable_once_command (char *args, int from_tty) |
c906108c SS |
8027 | { |
8028 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
8029 | } | |
8030 | ||
8031 | static void | |
fba45db2 | 8032 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8033 | { |
b5de0fa7 | 8034 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8035 | } |
8036 | ||
c906108c | 8037 | static void |
fba45db2 | 8038 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8039 | { |
8040 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8041 | } | |
8042 | \f | |
fa8d40ab JJ |
8043 | static void |
8044 | set_breakpoint_cmd (char *args, int from_tty) | |
8045 | { | |
8046 | } | |
8047 | ||
8048 | static void | |
8049 | show_breakpoint_cmd (char *args, int from_tty) | |
8050 | { | |
8051 | } | |
8052 | ||
c906108c SS |
8053 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8054 | ||
8055 | struct symtabs_and_lines | |
fba45db2 | 8056 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8057 | { |
8058 | struct symtabs_and_lines sals; | |
8059 | if (string == 0) | |
8a3fe4f8 | 8060 | error (_("Empty line specification.")); |
c906108c SS |
8061 | if (default_breakpoint_valid) |
8062 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8063 | default_breakpoint_symtab, |
8064 | default_breakpoint_line, | |
68219205 | 8065 | (char ***) NULL, NULL); |
c906108c SS |
8066 | else |
8067 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8068 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8069 | if (*string) |
8a3fe4f8 | 8070 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8071 | return sals; |
8072 | } | |
8181d85f DJ |
8073 | |
8074 | /* Create and insert a raw software breakpoint at PC. Return an | |
8075 | identifier, which should be used to remove the breakpoint later. | |
8076 | In general, places which call this should be using something on the | |
8077 | breakpoint chain instead; this function should be eliminated | |
8078 | someday. */ | |
8079 | ||
8080 | void * | |
8081 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8082 | { | |
8083 | struct bp_target_info *bp_tgt; | |
8084 | ||
8085 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8086 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8087 | ||
8088 | bp_tgt->placed_address = pc; | |
8089 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8090 | { | |
8091 | /* Could not insert the breakpoint. */ | |
8092 | xfree (bp_tgt); | |
8093 | return NULL; | |
8094 | } | |
8095 | ||
8096 | return bp_tgt; | |
8097 | } | |
8098 | ||
8099 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8100 | ||
8101 | int | |
8102 | deprecated_remove_raw_breakpoint (void *bp) | |
8103 | { | |
8104 | struct bp_target_info *bp_tgt = bp; | |
8105 | int ret; | |
8106 | ||
8107 | ret = target_remove_breakpoint (bp_tgt); | |
8108 | xfree (bp_tgt); | |
8109 | ||
8110 | return ret; | |
8111 | } | |
8112 | ||
8113 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8114 | ||
8115 | static void *single_step_breakpoints[2]; | |
8116 | ||
8117 | /* Create and insert a breakpoint for software single step. */ | |
8118 | ||
8119 | void | |
8120 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8121 | { | |
8122 | void **bpt_p; | |
8123 | ||
8124 | if (single_step_breakpoints[0] == NULL) | |
8125 | bpt_p = &single_step_breakpoints[0]; | |
8126 | else | |
8127 | { | |
8128 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8129 | bpt_p = &single_step_breakpoints[1]; | |
8130 | } | |
8131 | ||
8132 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8133 | to only create the breakpoints once, and actually put them on the | |
8134 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8135 | adjust the addresses each time they were needed. Doing this requires | |
8136 | corresponding changes elsewhere where single step breakpoints are | |
8137 | handled, however. So, for now, we use this. */ | |
8138 | ||
8139 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8140 | if (*bpt_p == NULL) | |
1893a4c0 | 8141 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8142 | paddr_nz (next_pc)); |
8143 | } | |
8144 | ||
8145 | /* Remove and delete any breakpoints used for software single step. */ | |
8146 | ||
8147 | void | |
8148 | remove_single_step_breakpoints (void) | |
8149 | { | |
8150 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8151 | ||
8152 | /* See insert_single_step_breakpoint for more about this deprecated | |
8153 | call. */ | |
8154 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8155 | single_step_breakpoints[0] = NULL; | |
8156 | ||
8157 | if (single_step_breakpoints[1] != NULL) | |
8158 | { | |
8159 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8160 | single_step_breakpoints[1] = NULL; | |
8161 | } | |
8162 | } | |
8163 | ||
1aafd4da UW |
8164 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8165 | ||
8166 | static int | |
8167 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8168 | { | |
8169 | int i; | |
8170 | ||
8171 | for (i = 0; i < 2; i++) | |
8172 | { | |
8173 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8174 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8175 | return 1; | |
8176 | } | |
8177 | ||
8178 | return 0; | |
8179 | } | |
8180 | ||
74960c60 VP |
8181 | int breakpoints_always_inserted_mode (void) |
8182 | { | |
8183 | return always_inserted_mode; | |
8184 | } | |
8185 | ||
c906108c | 8186 | \f |
31e2b00f AS |
8187 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8188 | It is defined as a macro to prevent duplication. | |
8189 | COMMAND should be a string constant containing the name of the command. */ | |
8190 | #define BREAK_ARGS_HELP(command) \ | |
8191 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8192 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8193 | If a line number is specified, break at start of code for that line.\n\ | |
8194 | If a function is specified, break at start of code for that function.\n\ | |
8195 | If an address is specified, break at that exact address.\n\ | |
8196 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8197 | This is useful for breaking on return to a stack frame.\n\ | |
8198 | \n\ | |
8199 | THREADNUM is the number from \"info threads\".\n\ | |
8200 | CONDITION is a boolean expression.\n\ | |
8201 | \n\ | |
8202 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8203 | \n\ | |
8204 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8205 | ||
c906108c | 8206 | void |
fba45db2 | 8207 | _initialize_breakpoint (void) |
c906108c | 8208 | { |
fa8d40ab JJ |
8209 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8210 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8211 | struct cmd_list_element *c; |
8212 | ||
84acb35a | 8213 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8214 | |
c906108c SS |
8215 | breakpoint_chain = 0; |
8216 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8217 | before a breakpoint is set. */ | |
8218 | breakpoint_count = 0; | |
8219 | ||
1bedd215 AC |
8220 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8221 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8222 | Usage is `ignore N COUNT'.")); | |
c906108c | 8223 | if (xdb_commands) |
c5aa993b | 8224 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8225 | |
1bedd215 AC |
8226 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8227 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8228 | Give breakpoint number as argument after \"commands\".\n\ |
8229 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8230 | The commands themselves follow starting on the next line.\n\ | |
8231 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8232 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8233 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8234 | |
1bedd215 AC |
8235 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8236 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8237 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8238 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8239 | |
1bedd215 | 8240 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8241 | Set a temporary breakpoint.\n\ |
c906108c SS |
8242 | Like \"break\" except the breakpoint is only temporary,\n\ |
8243 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8244 | by using \"enable delete\" on the breakpoint number.\n\ |
8245 | \n" | |
8246 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8247 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8248 | |
1bedd215 | 8249 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8250 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8251 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8252 | some target hardware may not have this support.\n\ |
8253 | \n" | |
8254 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8255 | set_cmd_completer (c, location_completer); |
c906108c | 8256 | |
1bedd215 | 8257 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8258 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8259 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8260 | so it will be deleted when hit.\n\ |
8261 | \n" | |
8262 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8263 | set_cmd_completer (c, location_completer); |
c906108c | 8264 | |
1bedd215 AC |
8265 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8266 | Enable some breakpoints.\n\ | |
c906108c SS |
8267 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8268 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8269 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8270 | With a subcommand you can enable temporarily."), |
c906108c SS |
8271 | &enablelist, "enable ", 1, &cmdlist); |
8272 | if (xdb_commands) | |
1bedd215 AC |
8273 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8274 | Enable some breakpoints.\n\ | |
c906108c SS |
8275 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8276 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8277 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8278 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8279 | |
8280 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8281 | ||
1bedd215 AC |
8282 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8283 | Enable some breakpoints.\n\ | |
c906108c SS |
8284 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8285 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8286 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8287 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8288 | |
1a966eab AC |
8289 | add_cmd ("once", no_class, enable_once_command, _("\ |
8290 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8291 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8292 | &enablebreaklist); |
8293 | ||
1a966eab AC |
8294 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8295 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8296 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8297 | &enablebreaklist); |
8298 | ||
1a966eab AC |
8299 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8300 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8301 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8302 | &enablelist); |
8303 | ||
1a966eab AC |
8304 | add_cmd ("once", no_class, enable_once_command, _("\ |
8305 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8306 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8307 | &enablelist); |
8308 | ||
1bedd215 AC |
8309 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8310 | Disable some breakpoints.\n\ | |
c906108c SS |
8311 | Arguments are breakpoint numbers with spaces in between.\n\ |
8312 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8313 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8314 | &disablelist, "disable ", 1, &cmdlist); |
8315 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8316 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8317 | if (xdb_commands) | |
1bedd215 AC |
8318 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8319 | Disable some breakpoints.\n\ | |
c906108c SS |
8320 | Arguments are breakpoint numbers with spaces in between.\n\ |
8321 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8322 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8323 | |
1a966eab AC |
8324 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8325 | Disable some breakpoints.\n\ | |
c906108c SS |
8326 | Arguments are breakpoint numbers with spaces in between.\n\ |
8327 | To disable all breakpoints, give no argument.\n\ | |
8328 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8329 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8330 | &disablelist); |
8331 | ||
1bedd215 AC |
8332 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8333 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8334 | Arguments are breakpoint numbers with spaces in between.\n\ |
8335 | To delete all breakpoints, give no argument.\n\ | |
8336 | \n\ | |
8337 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8338 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8339 | &deletelist, "delete ", 1, &cmdlist); |
8340 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8341 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8342 | if (xdb_commands) |
1bedd215 AC |
8343 | add_com ("db", class_breakpoint, delete_command, _("\ |
8344 | Delete some breakpoints.\n\ | |
c906108c | 8345 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8346 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8347 | |
1a966eab AC |
8348 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8349 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8350 | Arguments are breakpoint numbers with spaces in between.\n\ |
8351 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8352 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8353 | &deletelist); |
8354 | ||
1bedd215 AC |
8355 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8356 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8357 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8358 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8359 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8360 | If an address is specified, breakpoints at that address are cleared.\n\ |
8361 | \n\ | |
8362 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8363 | is executing in.\n\ |
8364 | \n\ | |
1bedd215 | 8365 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8366 | |
1bedd215 | 8367 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8368 | Set breakpoint at specified line or function.\n" |
8369 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8370 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8371 | |
c906108c SS |
8372 | add_com_alias ("b", "break", class_run, 1); |
8373 | add_com_alias ("br", "break", class_run, 1); | |
8374 | add_com_alias ("bre", "break", class_run, 1); | |
8375 | add_com_alias ("brea", "break", class_run, 1); | |
8376 | ||
502fd408 | 8377 | if (xdb_commands) |
c906108c SS |
8378 | { |
8379 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8380 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8381 | } |
8382 | ||
8383 | if (dbx_commands) | |
8384 | { | |
1bedd215 AC |
8385 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8386 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8387 | &stoplist, "stop ", 1, &cmdlist); |
8388 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8389 | _("Break in function or address."), &stoplist); |
c5aa993b | 8390 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8391 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8392 | add_com ("status", class_info, breakpoints_info, _("\ |
8393 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8394 | The \"Type\" column indicates one of:\n\ |
8395 | \tbreakpoint - normal breakpoint\n\ | |
8396 | \twatchpoint - watchpoint\n\ | |
8397 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8398 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8399 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8400 | address and file/line number respectively.\n\ |
8401 | \n\ | |
8402 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8403 | are set to the address of the last breakpoint listed unless the command\n\ |
8404 | is prefixed with \"server \".\n\n\ | |
c906108c | 8405 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8406 | breakpoint set.")); |
c906108c SS |
8407 | } |
8408 | ||
1bedd215 AC |
8409 | add_info ("breakpoints", breakpoints_info, _("\ |
8410 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8411 | The \"Type\" column indicates one of:\n\ |
8412 | \tbreakpoint - normal breakpoint\n\ | |
8413 | \twatchpoint - watchpoint\n\ | |
8414 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8415 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8416 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8417 | address and file/line number respectively.\n\ |
8418 | \n\ | |
8419 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8420 | are set to the address of the last breakpoint listed unless the command\n\ |
8421 | is prefixed with \"server \".\n\n\ | |
c906108c | 8422 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8423 | breakpoint set.")); |
c906108c SS |
8424 | |
8425 | if (xdb_commands) | |
1bedd215 AC |
8426 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8427 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8428 | The \"Type\" column indicates one of:\n\ |
8429 | \tbreakpoint - normal breakpoint\n\ | |
8430 | \twatchpoint - watchpoint\n\ | |
8431 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8432 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8433 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8434 | address and file/line number respectively.\n\ |
8435 | \n\ | |
8436 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8437 | are set to the address of the last breakpoint listed unless the command\n\ |
8438 | is prefixed with \"server \".\n\n\ | |
c906108c | 8439 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8440 | breakpoint set.")); |
c906108c | 8441 | |
1a966eab AC |
8442 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8443 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8444 | The \"Type\" column indicates one of:\n\ |
8445 | \tbreakpoint - normal breakpoint\n\ | |
8446 | \twatchpoint - watchpoint\n\ | |
8447 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8448 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8449 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8450 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8451 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8452 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8453 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8454 | address and file/line number respectively.\n\ |
8455 | \n\ | |
8456 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8457 | are set to the address of the last breakpoint listed unless the command\n\ |
8458 | is prefixed with \"server \".\n\n\ | |
c906108c | 8459 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8460 | breakpoint set."), |
c906108c SS |
8461 | &maintenanceinfolist); |
8462 | ||
1bedd215 AC |
8463 | add_com ("catch", class_breakpoint, catch_command, _("\ |
8464 | Set catchpoints to catch events.\n\ | |
c906108c SS |
8465 | Raised signals may be caught:\n\ |
8466 | \tcatch signal - all signals\n\ | |
8467 | \tcatch signal <signame> - a particular signal\n\ | |
8468 | Raised exceptions may be caught:\n\ | |
8469 | \tcatch throw - all exceptions, when thrown\n\ | |
8470 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
8471 | \tcatch catch - all exceptions, when caught\n\ | |
8472 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
8473 | Thread or process events may be caught:\n\ | |
8474 | \tcatch thread_start - any threads, just after creation\n\ | |
8475 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8476 | \tcatch thread_join - any threads, just after joins\n\ | |
8477 | Process events may be caught:\n\ | |
8478 | \tcatch start - any processes, just after creation\n\ | |
8479 | \tcatch exit - any processes, just before expiration\n\ | |
8480 | \tcatch fork - calls to fork()\n\ | |
8481 | \tcatch vfork - calls to vfork()\n\ | |
8482 | \tcatch exec - calls to exec()\n\ | |
8483 | Dynamically-linked library events may be caught:\n\ | |
8484 | \tcatch load - loads of any library\n\ | |
8485 | \tcatch load <libname> - loads of a particular library\n\ | |
8486 | \tcatch unload - unloads of any library\n\ | |
8487 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8488 | The act of your program's execution stopping may also be caught:\n\ | |
8489 | \tcatch stop\n\n\ | |
8490 | C++ exceptions may be caught:\n\ | |
8491 | \tcatch throw - all exceptions, when thrown\n\ | |
8492 | \tcatch catch - all exceptions, when caught\n\ | |
f7f9143b JB |
8493 | Ada exceptions may be caught:\n\ |
8494 | \tcatch exception - all exceptions, when raised\n\ | |
8495 | \tcatch exception <name> - a particular exception, when raised\n\ | |
8496 | \tcatch exception unhandled - all unhandled exceptions, when raised\n\ | |
8497 | \tcatch assert - all failed assertions, when raised\n\ | |
c906108c SS |
8498 | \n\ |
8499 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8500 | after a fork or vfork is caught.\n\n\ | |
1bedd215 | 8501 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.")); |
c5aa993b | 8502 | |
1bedd215 AC |
8503 | add_com ("tcatch", class_breakpoint, tcatch_command, _("\ |
8504 | Set temporary catchpoints to catch events.\n\ | |
c906108c SS |
8505 | Args like \"catch\" command.\n\ |
8506 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8507 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
1bedd215 | 8508 | by using \"enable delete\" on the catchpoint number.")); |
c5aa993b | 8509 | |
1bedd215 AC |
8510 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8511 | Set a watchpoint for an expression.\n\ | |
c906108c | 8512 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8513 | an expression changes.")); |
65d12d83 | 8514 | set_cmd_completer (c, expression_completer); |
c906108c | 8515 | |
1bedd215 AC |
8516 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8517 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8518 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8519 | an expression is read.")); |
65d12d83 | 8520 | set_cmd_completer (c, expression_completer); |
c906108c | 8521 | |
1bedd215 AC |
8522 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8523 | Set a watchpoint for an expression.\n\ | |
c906108c | 8524 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8525 | an expression is either read or written.")); |
65d12d83 | 8526 | set_cmd_completer (c, expression_completer); |
c906108c SS |
8527 | |
8528 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8529 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8530 | |
8531 | ||
920d2a44 AC |
8532 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8533 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8534 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8535 | &can_use_hw_watchpoints, _("\ | |
8536 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8537 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8538 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8539 | such is available. (However, any hardware watchpoints that were\n\ | |
8540 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8541 | hardware.)"), |
8542 | NULL, | |
920d2a44 | 8543 | show_can_use_hw_watchpoints, |
85c07804 | 8544 | &setlist, &showlist); |
c906108c SS |
8545 | |
8546 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8547 | |
1bedd215 | 8548 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8549 | Breakpoint specific settings\n\ |
8550 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8551 | pending breakpoint behavior"), |
fa8d40ab JJ |
8552 | &breakpoint_set_cmdlist, "set breakpoint ", |
8553 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8554 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8555 | Breakpoint specific settings\n\ |
8556 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8557 | pending breakpoint behavior"), |
fa8d40ab JJ |
8558 | &breakpoint_show_cmdlist, "show breakpoint ", |
8559 | 0/*allow-unknown*/, &showlist); | |
8560 | ||
7915a72c AC |
8561 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8562 | &pending_break_support, _("\ | |
8563 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8564 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8565 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8566 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8567 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8568 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8569 | NULL, |
920d2a44 | 8570 | show_pending_break_support, |
6e1d7d6c AC |
8571 | &breakpoint_set_cmdlist, |
8572 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8573 | |
8574 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8575 | |
8576 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8577 | &automatic_hardware_breakpoints, _("\ | |
8578 | Set automatic usage of hardware breakpoints."), _("\ | |
8579 | Show automatic usage of hardware breakpoints."), _("\ | |
8580 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8581 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8582 | a warning will be emitted for such breakpoints."), | |
8583 | NULL, | |
8584 | show_automatic_hardware_breakpoints, | |
8585 | &breakpoint_set_cmdlist, | |
8586 | &breakpoint_show_cmdlist); | |
74960c60 VP |
8587 | |
8588 | add_setshow_boolean_cmd ("always-inserted", class_support, | |
8589 | &always_inserted_mode, _("\ | |
8590 | Set mode for inserting breakpoints."), _("\ | |
8591 | Show mode for inserting breakpoints."), _("\ | |
8592 | When this mode is off (which is the default), breakpoints are inserted in\n\ | |
8593 | inferior when it is resumed, and removed when execution stops. When this\n\ | |
8594 | mode is on, breakpoints are inserted immediately and removed only when\n\ | |
8595 | the user deletes the breakpoint."), | |
8596 | NULL, | |
8597 | &show_always_inserted_mode, | |
8598 | &breakpoint_set_cmdlist, | |
8599 | &breakpoint_show_cmdlist); | |
765dc015 VP |
8600 | |
8601 | automatic_hardware_breakpoints = 1; | |
c906108c | 8602 | } |