Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
197e01b6 | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, |
38fcd64c | 4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
e74f0f02 | 5 | 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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
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 JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include <ctype.h> | |
26 | #include "symtab.h" | |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "expression.h" | |
31 | #include "gdbcore.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "value.h" | |
34 | #include "command.h" | |
35 | #include "inferior.h" | |
36 | #include "gdbthread.h" | |
37 | #include "target.h" | |
38 | #include "language.h" | |
39 | #include "gdb_string.h" | |
40 | #include "demangle.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
a77053c2 | 52 | #include "solib.h" |
84acb35a JJ |
53 | #include "solist.h" |
54 | #include "observer.h" | |
60250e8b | 55 | #include "exceptions.h" |
765dc015 | 56 | #include "memattr.h" |
c906108c | 57 | |
104c1213 | 58 | #include "gdb-events.h" |
034dad6f | 59 | #include "mi/mi-common.h" |
104c1213 | 60 | |
c906108c SS |
61 | /* Prototypes for local functions. */ |
62 | ||
c2c6d25f JM |
63 | static void until_break_command_continuation (struct continuation_arg *arg); |
64 | ||
a14ed312 | 65 | static void catch_command_1 (char *, int, int); |
c906108c | 66 | |
a14ed312 | 67 | static void enable_delete_command (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 70 | |
a14ed312 | 71 | static void enable_once_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 74 | |
a14ed312 | 75 | static void disable_command (char *, int); |
c906108c | 76 | |
a14ed312 | 77 | static void enable_command (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 80 | |
a14ed312 | 81 | static void ignore_command (char *, int); |
c906108c | 82 | |
4efb68b1 | 83 | static int breakpoint_re_set_one (void *); |
c906108c | 84 | |
a14ed312 | 85 | static void clear_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void catch_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void watch_command (char *, int); |
c906108c | 90 | |
a14ed312 | 91 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 92 | |
0101ce28 | 93 | static int break_command_1 (char *, int, int, struct breakpoint *); |
c906108c | 94 | |
a14ed312 | 95 | static void mention (struct breakpoint *); |
c906108c | 96 | |
4d28f7a8 | 97 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 98 | |
9f60f21b | 99 | static void check_duplicates (struct breakpoint *); |
c906108c | 100 | |
76897487 KB |
101 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
102 | ||
88f7da05 KB |
103 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
104 | enum bptype bptype); | |
76897487 | 105 | |
d674a25c | 106 | static void describe_other_breakpoints (CORE_ADDR, asection *, int); |
c906108c | 107 | |
a14ed312 | 108 | static void breakpoints_info (char *, int); |
c906108c | 109 | |
a14ed312 | 110 | static void breakpoint_1 (int, int); |
c906108c | 111 | |
a14ed312 | 112 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 113 | |
4efb68b1 | 114 | static int breakpoint_cond_eval (void *); |
c906108c | 115 | |
4efb68b1 | 116 | static void cleanup_executing_breakpoints (void *); |
c906108c | 117 | |
a14ed312 | 118 | static void commands_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void condition_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static int get_number_trailer (char **, int); |
c906108c | 123 | |
a14ed312 | 124 | void set_breakpoint_count (int); |
c906108c | 125 | |
c5aa993b JM |
126 | typedef enum |
127 | { | |
128 | mark_inserted, | |
129 | mark_uninserted | |
130 | } | |
131 | insertion_state_t; | |
c906108c | 132 | |
0bde7532 | 133 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 134 | |
a14ed312 | 135 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
136 | |
137 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 138 | |
c5aa993b JM |
139 | typedef struct |
140 | { | |
141 | enum exception_event_kind kind; | |
b5de0fa7 | 142 | int enable_p; |
c5aa993b JM |
143 | } |
144 | args_for_catchpoint_enable; | |
c906108c | 145 | |
4efb68b1 | 146 | static int watchpoint_check (void *); |
c906108c | 147 | |
4efb68b1 | 148 | static int cover_target_enable_exception_callback (void *); |
c906108c | 149 | |
a14ed312 | 150 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 151 | |
a14ed312 | 152 | static void create_longjmp_breakpoint (char *); |
c906108c | 153 | |
1900040c MS |
154 | static void create_overlay_event_breakpoint (char *); |
155 | ||
a14ed312 | 156 | static int hw_breakpoint_used_count (void); |
c906108c | 157 | |
a14ed312 | 158 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 159 | |
a14ed312 | 160 | static void hbreak_command (char *, int); |
c906108c | 161 | |
a14ed312 | 162 | static void thbreak_command (char *, int); |
c906108c | 163 | |
a14ed312 | 164 | static void watch_command_1 (char *, int, int); |
c906108c | 165 | |
a14ed312 | 166 | static void rwatch_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static void awatch_command (char *, int); |
c906108c | 169 | |
a14ed312 | 170 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 171 | |
a14ed312 KB |
172 | static void solib_load_unload_1 (char *hookname, |
173 | int tempflag, | |
174 | char *dll_pathname, | |
175 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 176 | |
a14ed312 KB |
177 | static void create_fork_vfork_event_catchpoint (int tempflag, |
178 | char *cond_string, | |
179 | enum bptype bp_kind); | |
7a292a7a | 180 | |
a14ed312 | 181 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 182 | |
a14ed312 | 183 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 188 | |
a14ed312 | 189 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 190 | |
a14ed312 | 191 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 192 | |
d85310f7 MS |
193 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
194 | enum exception_event_kind ex_event, | |
195 | struct symtab_and_line *sal); | |
7a292a7a | 196 | |
d85310f7 MS |
197 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
198 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 199 | |
a14ed312 | 200 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 201 | |
a14ed312 | 202 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 203 | |
c906108c SS |
204 | /* Prototypes for exported functions. */ |
205 | ||
c906108c SS |
206 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
207 | if such is available. */ | |
208 | static int can_use_hw_watchpoints; | |
209 | ||
920d2a44 AC |
210 | static void |
211 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
212 | struct cmd_list_element *c, | |
213 | const char *value) | |
214 | { | |
215 | fprintf_filtered (file, _("\ | |
216 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
217 | value); | |
218 | } | |
219 | ||
fa8d40ab JJ |
220 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
221 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
222 | for unrecognized breakpoint locations. | |
223 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
224 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
225 | static void |
226 | show_pending_break_support (struct ui_file *file, int from_tty, | |
227 | struct cmd_list_element *c, | |
228 | const char *value) | |
229 | { | |
230 | fprintf_filtered (file, _("\ | |
231 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
232 | value); | |
233 | } | |
fa8d40ab | 234 | |
765dc015 VP |
235 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
236 | set with "break" but falling in read-only memory. | |
237 | If 0, gdb will warn about such breakpoints, but won't automatically | |
238 | use hardware breakpoints. */ | |
239 | static int automatic_hardware_breakpoints; | |
240 | static void | |
241 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
242 | struct cmd_list_element *c, | |
243 | const char *value) | |
244 | { | |
245 | fprintf_filtered (file, _("\ | |
246 | Automatic usage of hardware breakpoints is %s.\n"), | |
247 | value); | |
248 | } | |
249 | ||
250 | ||
a14ed312 | 251 | void _initialize_breakpoint (void); |
c906108c | 252 | |
c5aa993b | 253 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 254 | |
c906108c SS |
255 | /* Are we executing breakpoint commands? */ |
256 | static int executing_breakpoint_commands; | |
257 | ||
c02f5703 MS |
258 | /* Are overlay event breakpoints enabled? */ |
259 | static int overlay_events_enabled; | |
260 | ||
c906108c SS |
261 | /* Walk the following statement or block through all breakpoints. |
262 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
263 | breakpoint. */ | |
264 | ||
5c44784c | 265 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 266 | |
5c44784c JM |
267 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
268 | for (B = breakpoint_chain; \ | |
269 | B ? (TMP=B->next, 1): 0; \ | |
270 | B = TMP) | |
c906108c | 271 | |
7cc221ef DJ |
272 | /* Similar iterators for the low-level breakpoints. */ |
273 | ||
274 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
275 | ||
276 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
277 | for (B = bp_location_chain; \ | |
278 | B ? (TMP=B->next, 1): 0; \ | |
279 | B = TMP) | |
280 | ||
c906108c SS |
281 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
282 | ||
283 | int show_breakpoint_hit_counts = 1; | |
284 | ||
7cc221ef | 285 | /* Chains of all breakpoints defined. */ |
c906108c SS |
286 | |
287 | struct breakpoint *breakpoint_chain; | |
288 | ||
7cc221ef DJ |
289 | struct bp_location *bp_location_chain; |
290 | ||
c906108c SS |
291 | /* Number of last breakpoint made. */ |
292 | ||
293 | int breakpoint_count; | |
294 | ||
c5aa993b JM |
295 | /* Pointer to current exception event record */ |
296 | static struct exception_event_record *current_exception_event; | |
c906108c | 297 | |
f83f82bc AC |
298 | /* Indicator of whether exception catchpoints should be nuked between |
299 | runs of a program. */ | |
300 | int deprecated_exception_catchpoints_are_fragile = 0; | |
c5aa993b | 301 | |
c906108c | 302 | /* Indicator of when exception catchpoints set-up should be |
f83f82bc AC |
303 | reinitialized -- e.g. when program is re-run. */ |
304 | int deprecated_exception_support_initialized = 0; | |
c906108c SS |
305 | |
306 | /* This function returns a pointer to the string representation of the | |
307 | pathname of the dynamically-linked library that has just been | |
308 | loaded. | |
309 | ||
310 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
311 | or undefined results are guaranteed. | |
312 | ||
313 | This string's contents are only valid immediately after the | |
314 | inferior has stopped in the dynamic linker hook, and becomes | |
315 | invalid as soon as the inferior is continued. Clients should make | |
316 | a copy of this string if they wish to continue the inferior and | |
317 | then access the string. */ | |
318 | ||
319 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
320 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
321 | #endif | |
322 | ||
323 | /* This function returns a pointer to the string representation of the | |
324 | pathname of the dynamically-linked library that has just been | |
325 | unloaded. | |
326 | ||
327 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
328 | TRUE, or undefined results are guaranteed. | |
329 | ||
330 | This string's contents are only valid immediately after the | |
331 | inferior has stopped in the dynamic linker hook, and becomes | |
332 | invalid as soon as the inferior is continued. Clients should make | |
333 | a copy of this string if they wish to continue the inferior and | |
334 | then access the string. */ | |
335 | ||
336 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
337 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
338 | #endif | |
339 | ||
340 | /* This function is called by the "catch load" command. It allows the | |
341 | debugger to be notified by the dynamic linker when a specified | |
342 | library file (or any library file, if filename is NULL) is loaded. */ | |
343 | ||
344 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
345 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
8a3fe4f8 | 346 | error (_("catch of library loads not yet implemented on this platform")) |
c906108c SS |
347 | #endif |
348 | ||
349 | /* This function is called by the "catch unload" command. It allows | |
350 | the debugger to be notified by the dynamic linker when a specified | |
351 | library file (or any library file, if filename is NULL) is | |
352 | unloaded. */ | |
353 | ||
354 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
1272ad14 | 355 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \ |
8a3fe4f8 | 356 | error (_("catch of library unloads not yet implemented on this platform")) |
c906108c SS |
357 | #endif |
358 | ||
468d015d JJ |
359 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
360 | static int | |
361 | breakpoint_enabled (struct breakpoint *b) | |
362 | { | |
0101ce28 | 363 | return (b->enable_state == bp_enabled && !b->pending); |
468d015d JJ |
364 | } |
365 | ||
c906108c SS |
366 | /* Set breakpoint count to NUM. */ |
367 | ||
368 | void | |
fba45db2 | 369 | set_breakpoint_count (int num) |
c906108c SS |
370 | { |
371 | breakpoint_count = num; | |
372 | set_internalvar (lookup_internalvar ("bpnum"), | |
373 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
374 | } | |
375 | ||
376 | /* Used in run_command to zero the hit count when a new run starts. */ | |
377 | ||
378 | void | |
fba45db2 | 379 | clear_breakpoint_hit_counts (void) |
c906108c SS |
380 | { |
381 | struct breakpoint *b; | |
382 | ||
383 | ALL_BREAKPOINTS (b) | |
384 | b->hit_count = 0; | |
385 | } | |
386 | ||
387 | /* Default address, symtab and line to put a breakpoint at | |
388 | for "break" command with no arg. | |
389 | if default_breakpoint_valid is zero, the other three are | |
390 | not valid, and "break" with no arg is an error. | |
391 | ||
392 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
393 | ||
394 | int default_breakpoint_valid; | |
395 | CORE_ADDR default_breakpoint_address; | |
396 | struct symtab *default_breakpoint_symtab; | |
397 | int default_breakpoint_line; | |
398 | \f | |
399 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
400 | Advance *PP after the string and any trailing whitespace. | |
401 | ||
402 | Currently the string can either be a number or "$" followed by the name | |
403 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
404 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
405 | ||
406 | TRAILER is a character which can be found after the number; most | |
407 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 408 | static int |
fba45db2 | 409 | get_number_trailer (char **pp, int trailer) |
c906108c | 410 | { |
5c44784c | 411 | int retval = 0; /* default */ |
c906108c SS |
412 | char *p = *pp; |
413 | ||
414 | if (p == NULL) | |
415 | /* Empty line means refer to the last breakpoint. */ | |
416 | return breakpoint_count; | |
417 | else if (*p == '$') | |
418 | { | |
419 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 420 | to pass to lookup_internalvar(). */ |
c906108c SS |
421 | char *varname; |
422 | char *start = ++p; | |
278cd55f | 423 | struct value *val; |
c906108c SS |
424 | |
425 | while (isalnum (*p) || *p == '_') | |
426 | p++; | |
427 | varname = (char *) alloca (p - start + 1); | |
428 | strncpy (varname, start, p - start); | |
429 | varname[p - start] = '\0'; | |
430 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 431 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
432 | retval = (int) value_as_long (val); |
433 | else | |
434 | { | |
a3f17187 | 435 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
436 | retval = 0; |
437 | } | |
c906108c SS |
438 | } |
439 | else | |
440 | { | |
441 | if (*p == '-') | |
442 | ++p; | |
443 | while (*p >= '0' && *p <= '9') | |
444 | ++p; | |
445 | if (p == *pp) | |
446 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
447 | { |
448 | /* Skip non-numeric token */ | |
449 | while (*p && !isspace((int) *p)) | |
450 | ++p; | |
451 | /* Return zero, which caller must interpret as error. */ | |
452 | retval = 0; | |
453 | } | |
454 | else | |
455 | retval = atoi (*pp); | |
456 | } | |
457 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
458 | { | |
459 | /* Trailing junk: return 0 and let caller print error msg. */ | |
460 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
461 | ++p; | |
462 | retval = 0; | |
c906108c | 463 | } |
c906108c SS |
464 | while (isspace (*p)) |
465 | p++; | |
466 | *pp = p; | |
467 | return retval; | |
468 | } | |
5c44784c | 469 | |
11cf8741 | 470 | |
5c44784c JM |
471 | /* Like get_number_trailer, but don't allow a trailer. */ |
472 | int | |
fba45db2 | 473 | get_number (char **pp) |
5c44784c JM |
474 | { |
475 | return get_number_trailer (pp, '\0'); | |
476 | } | |
477 | ||
478 | /* Parse a number or a range. | |
479 | * A number will be of the form handled by get_number. | |
480 | * A range will be of the form <number1> - <number2>, and | |
481 | * will represent all the integers between number1 and number2, | |
482 | * inclusive. | |
483 | * | |
484 | * While processing a range, this fuction is called iteratively; | |
485 | * At each call it will return the next value in the range. | |
486 | * | |
487 | * At the beginning of parsing a range, the char pointer PP will | |
488 | * be advanced past <number1> and left pointing at the '-' token. | |
489 | * Subsequent calls will not advance the pointer until the range | |
490 | * is completed. The call that completes the range will advance | |
491 | * pointer PP past <number2>. | |
492 | */ | |
493 | ||
494 | int | |
fba45db2 | 495 | get_number_or_range (char **pp) |
5c44784c JM |
496 | { |
497 | static int last_retval, end_value; | |
498 | static char *end_ptr; | |
499 | static int in_range = 0; | |
500 | ||
501 | if (**pp != '-') | |
502 | { | |
503 | /* Default case: pp is pointing either to a solo number, | |
504 | or to the first number of a range. */ | |
505 | last_retval = get_number_trailer (pp, '-'); | |
506 | if (**pp == '-') | |
507 | { | |
508 | char **temp; | |
509 | ||
510 | /* This is the start of a range (<number1> - <number2>). | |
511 | Skip the '-', parse and remember the second number, | |
512 | and also remember the end of the final token. */ | |
513 | ||
514 | temp = &end_ptr; | |
515 | end_ptr = *pp + 1; | |
516 | while (isspace ((int) *end_ptr)) | |
517 | end_ptr++; /* skip white space */ | |
518 | end_value = get_number (temp); | |
519 | if (end_value < last_retval) | |
520 | { | |
8a3fe4f8 | 521 | error (_("inverted range")); |
5c44784c JM |
522 | } |
523 | else if (end_value == last_retval) | |
524 | { | |
525 | /* degenerate range (number1 == number2). Advance the | |
526 | token pointer so that the range will be treated as a | |
527 | single number. */ | |
528 | *pp = end_ptr; | |
529 | } | |
530 | else | |
531 | in_range = 1; | |
532 | } | |
533 | } | |
534 | else if (! in_range) | |
8a3fe4f8 | 535 | error (_("negative value")); |
5c44784c JM |
536 | else |
537 | { | |
538 | /* pp points to the '-' that betokens a range. All | |
539 | number-parsing has already been done. Return the next | |
540 | integer value (one greater than the saved previous value). | |
541 | Do not advance the token pointer 'pp' until the end of range | |
542 | is reached. */ | |
543 | ||
544 | if (++last_retval == end_value) | |
545 | { | |
546 | /* End of range reached; advance token pointer. */ | |
547 | *pp = end_ptr; | |
548 | in_range = 0; | |
549 | } | |
550 | } | |
551 | return last_retval; | |
552 | } | |
553 | ||
554 | ||
c906108c SS |
555 | \f |
556 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
557 | ||
558 | static void | |
fba45db2 | 559 | condition_command (char *arg, int from_tty) |
c906108c | 560 | { |
52f0bd74 | 561 | struct breakpoint *b; |
c906108c | 562 | char *p; |
52f0bd74 | 563 | int bnum; |
c906108c SS |
564 | |
565 | if (arg == 0) | |
e2e0b3e5 | 566 | error_no_arg (_("breakpoint number")); |
c906108c SS |
567 | |
568 | p = arg; | |
569 | bnum = get_number (&p); | |
5c44784c | 570 | if (bnum == 0) |
8a3fe4f8 | 571 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
572 | |
573 | ALL_BREAKPOINTS (b) | |
574 | if (b->number == bnum) | |
c5aa993b JM |
575 | { |
576 | if (b->cond) | |
577 | { | |
b8c9b27d | 578 | xfree (b->cond); |
c5aa993b JM |
579 | b->cond = 0; |
580 | } | |
581 | if (b->cond_string != NULL) | |
b8c9b27d | 582 | xfree (b->cond_string); |
c906108c | 583 | |
c5aa993b JM |
584 | if (*p == 0) |
585 | { | |
586 | b->cond = 0; | |
587 | b->cond_string = NULL; | |
588 | if (from_tty) | |
a3f17187 | 589 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); |
c5aa993b JM |
590 | } |
591 | else | |
592 | { | |
593 | arg = p; | |
594 | /* I don't know if it matters whether this is the string the user | |
595 | typed in or the decompiled expression. */ | |
596 | b->cond_string = savestring (arg, strlen (arg)); | |
0101ce28 JJ |
597 | if (!b->pending) |
598 | { | |
599 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
600 | if (*arg) | |
8a3fe4f8 | 601 | error (_("Junk at end of expression")); |
0101ce28 | 602 | } |
c5aa993b JM |
603 | } |
604 | breakpoints_changed (); | |
221ea385 | 605 | breakpoint_modify_event (b->number); |
c5aa993b JM |
606 | return; |
607 | } | |
c906108c | 608 | |
8a3fe4f8 | 609 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
610 | } |
611 | ||
c906108c | 612 | static void |
fba45db2 | 613 | commands_command (char *arg, int from_tty) |
c906108c | 614 | { |
52f0bd74 | 615 | struct breakpoint *b; |
c906108c | 616 | char *p; |
52f0bd74 | 617 | int bnum; |
c906108c SS |
618 | struct command_line *l; |
619 | ||
620 | /* If we allowed this, we would have problems with when to | |
621 | free the storage, if we change the commands currently | |
622 | being read from. */ | |
623 | ||
624 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 625 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
626 | |
627 | p = arg; | |
628 | bnum = get_number (&p); | |
5c44784c | 629 | |
c906108c | 630 | if (p && *p) |
8a3fe4f8 | 631 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 632 | |
c906108c SS |
633 | ALL_BREAKPOINTS (b) |
634 | if (b->number == bnum) | |
9ebf4acf AC |
635 | { |
636 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
637 | bnum); | |
638 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
639 | l = read_command_lines (tmpbuf, from_tty); | |
640 | do_cleanups (cleanups); | |
641 | free_command_lines (&b->commands); | |
642 | b->commands = l; | |
643 | breakpoints_changed (); | |
644 | breakpoint_modify_event (b->number); | |
645 | return; | |
c5aa993b | 646 | } |
8a3fe4f8 | 647 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
648 | } |
649 | \f | |
650 | /* Like target_read_memory() but if breakpoints are inserted, return | |
651 | the shadow contents instead of the breakpoints themselves. | |
652 | ||
653 | Read "memory data" from whatever target or inferior we have. | |
654 | Returns zero if successful, errno value if not. EIO is used | |
655 | for address out of bounds. If breakpoints are inserted, returns | |
656 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
657 | ||
658 | int | |
359a9262 | 659 | read_memory_nobpt (CORE_ADDR memaddr, gdb_byte *myaddr, unsigned len) |
c906108c SS |
660 | { |
661 | int status; | |
ffce0d52 | 662 | struct bp_location *b; |
c906108c SS |
663 | CORE_ADDR bp_addr = 0; |
664 | int bp_size = 0; | |
665 | ||
666 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
667 | /* No breakpoints on this machine. */ | |
668 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 669 | |
ffce0d52 | 670 | ALL_BP_LOCATIONS (b) |
c5aa993b | 671 | { |
ffce0d52 | 672 | if (b->owner->type == bp_none) |
8a3fe4f8 | 673 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
674 | b->owner->number); |
675 | ||
676 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 677 | continue; |
ffce0d52 | 678 | if (!b->inserted) |
c5aa993b JM |
679 | continue; |
680 | /* Addresses and length of the part of the breakpoint that | |
681 | we need to copy. */ | |
8181d85f DJ |
682 | bp_addr = b->target_info.placed_address; |
683 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 684 | if (bp_size == 0) |
8181d85f | 685 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b JM |
686 | continue; |
687 | if (bp_addr + bp_size <= memaddr) | |
688 | /* The breakpoint is entirely before the chunk of memory we | |
689 | are reading. */ | |
690 | continue; | |
691 | if (bp_addr >= memaddr + len) | |
692 | /* The breakpoint is entirely after the chunk of memory we are | |
693 | reading. */ | |
694 | continue; | |
695 | /* Copy the breakpoint from the shadow contents, and recurse for | |
696 | the things before and after. */ | |
c906108c | 697 | { |
c5aa993b JM |
698 | /* Offset within shadow_contents. */ |
699 | int bptoffset = 0; | |
c906108c | 700 | |
c5aa993b JM |
701 | if (bp_addr < memaddr) |
702 | { | |
703 | /* Only copy the second part of the breakpoint. */ | |
704 | bp_size -= memaddr - bp_addr; | |
705 | bptoffset = memaddr - bp_addr; | |
706 | bp_addr = memaddr; | |
707 | } | |
708 | ||
709 | if (bp_addr + bp_size > memaddr + len) | |
710 | { | |
711 | /* Only copy the first part of the breakpoint. */ | |
712 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
713 | } | |
714 | ||
715 | memcpy (myaddr + bp_addr - memaddr, | |
8181d85f | 716 | b->target_info.shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
717 | |
718 | if (bp_addr > memaddr) | |
719 | { | |
720 | /* Copy the section of memory before the breakpoint. */ | |
359a9262 | 721 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); |
c5aa993b JM |
722 | if (status != 0) |
723 | return status; | |
724 | } | |
725 | ||
726 | if (bp_addr + bp_size < memaddr + len) | |
727 | { | |
728 | /* Copy the section of memory after the breakpoint. */ | |
359a9262 | 729 | status = read_memory_nobpt (bp_addr + bp_size, |
d85310f7 MS |
730 | myaddr + bp_addr + bp_size - memaddr, |
731 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
732 | if (status != 0) |
733 | return status; | |
734 | } | |
735 | return 0; | |
c906108c | 736 | } |
c5aa993b | 737 | } |
c906108c SS |
738 | /* Nothing overlaps. Just call read_memory_noerr. */ |
739 | return target_read_memory (memaddr, myaddr, len); | |
740 | } | |
c906108c | 741 | \f |
c5aa993b | 742 | |
687595f9 | 743 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 744 | static void |
687595f9 DJ |
745 | insert_catchpoint (struct ui_out *uo, void *args) |
746 | { | |
747 | struct breakpoint *b = (struct breakpoint *) args; | |
748 | int val = -1; | |
749 | ||
750 | switch (b->type) | |
751 | { | |
752 | case bp_catch_fork: | |
fa113d1a | 753 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
754 | break; |
755 | case bp_catch_vfork: | |
fa113d1a | 756 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
757 | break; |
758 | case bp_catch_exec: | |
fa113d1a | 759 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
760 | break; |
761 | default: | |
e2e0b3e5 | 762 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
687595f9 DJ |
763 | break; |
764 | } | |
687595f9 DJ |
765 | } |
766 | ||
7270d8f2 OF |
767 | /* Helper routine: free the value chain for a breakpoint (watchpoint). */ |
768 | ||
b40ce68a JB |
769 | static void |
770 | free_valchain (struct bp_location *b) | |
7270d8f2 OF |
771 | { |
772 | struct value *v; | |
773 | struct value *n; | |
774 | ||
775 | /* Free the saved value chain. We will construct a new one | |
776 | the next time the watchpoint is inserted. */ | |
777 | for (v = b->owner->val_chain; v; v = n) | |
778 | { | |
17cf0ecd | 779 | n = value_next (v); |
7270d8f2 OF |
780 | value_free (v); |
781 | } | |
782 | b->owner->val_chain = NULL; | |
783 | } | |
784 | ||
879bfdc2 DJ |
785 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
786 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
787 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
788 | ||
789 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
790 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 791 | static int |
879bfdc2 | 792 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
793 | struct ui_file *tmp_error_stream, |
794 | int *disabled_breaks, int *process_warning, | |
795 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
796 | { |
797 | int val = 0; | |
798 | ||
799 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
800 | breakpoints should not be inserted. */ | |
468d015d | 801 | if (!breakpoint_enabled (bpt->owner)) |
879bfdc2 DJ |
802 | return 0; |
803 | ||
804 | if (bpt->inserted || bpt->duplicate) | |
805 | return 0; | |
806 | ||
8181d85f DJ |
807 | /* Initialize the target-specific information. */ |
808 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
809 | bpt->target_info.placed_address = bpt->address; | |
810 | ||
879bfdc2 DJ |
811 | if (bpt->loc_type == bp_loc_software_breakpoint |
812 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
813 | { | |
765dc015 VP |
814 | if (bpt->owner->type != bp_hardware_breakpoint) |
815 | { | |
816 | /* If the explicitly specified breakpoint type | |
817 | is not hardware breakpoint, check the memory map to see | |
818 | if the breakpoint address is in read only memory or not. | |
819 | Two important cases are: | |
820 | - location type is not hardware breakpoint, memory | |
821 | is readonly. We change the type of the location to | |
822 | hardware breakpoint. | |
823 | - location type is hardware breakpoint, memory is read-write. | |
824 | This means we've previously made the location hardware one, but | |
825 | then the memory map changed, so we undo. | |
826 | ||
827 | When breakpoints are removed, remove_breakpoints will | |
828 | use location types we've just set here, the only possible | |
829 | problem is that memory map has changed during running program, | |
830 | but it's not going to work anyway with current gdb. */ | |
831 | struct mem_region *mr | |
832 | = lookup_mem_region (bpt->target_info.placed_address); | |
833 | ||
834 | if (mr) | |
835 | { | |
836 | if (automatic_hardware_breakpoints) | |
837 | { | |
838 | int changed = 0; | |
839 | enum bp_loc_type new_type; | |
840 | ||
841 | if (mr->attrib.mode != MEM_RW) | |
842 | new_type = bp_loc_hardware_breakpoint; | |
843 | else | |
844 | new_type = bp_loc_software_breakpoint; | |
845 | ||
846 | if (new_type != bpt->loc_type) | |
847 | { | |
848 | static int said = 0; | |
849 | bpt->loc_type = new_type; | |
850 | if (!said) | |
851 | { | |
852 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 853 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
854 | said = 1; |
855 | } | |
856 | } | |
857 | } | |
858 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
859 | && mr->attrib.mode != MEM_RW) | |
860 | warning (_("cannot set software breakpoint at readonly address %s"), | |
861 | paddr (bpt->address)); | |
862 | } | |
863 | } | |
864 | ||
879bfdc2 DJ |
865 | /* First check to see if we have to handle an overlay. */ |
866 | if (overlay_debugging == ovly_off | |
867 | || bpt->section == NULL | |
868 | || !(section_is_overlay (bpt->section))) | |
869 | { | |
870 | /* No overlay handling: just set the breakpoint. */ | |
871 | ||
872 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 873 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 874 | else |
8181d85f | 875 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
876 | } |
877 | else | |
878 | { | |
879 | /* This breakpoint is in an overlay section. | |
880 | Shall we set a breakpoint at the LMA? */ | |
881 | if (!overlay_events_enabled) | |
882 | { | |
883 | /* Yes -- overlay event support is not active, | |
884 | so we must try to set a breakpoint at the LMA. | |
885 | This will not work for a hardware breakpoint. */ | |
886 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 887 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
888 | bpt->owner->number); |
889 | else | |
890 | { | |
891 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
892 | bpt->section); | |
893 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
894 | bpt->overlay_target_info = bpt->target_info; |
895 | bpt->overlay_target_info.placed_address = addr; | |
896 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
897 | if (val != 0) |
898 | fprintf_unfiltered (tmp_error_stream, | |
899 | "Overlay breakpoint %d failed: in ROM?", | |
900 | bpt->owner->number); | |
901 | } | |
902 | } | |
903 | /* Shall we set a breakpoint at the VMA? */ | |
904 | if (section_is_mapped (bpt->section)) | |
905 | { | |
906 | /* Yes. This overlay section is mapped into memory. */ | |
907 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 908 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 909 | else |
8181d85f | 910 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
911 | } |
912 | else | |
913 | { | |
914 | /* No. This breakpoint will not be inserted. | |
915 | No error, but do not mark the bp as 'inserted'. */ | |
916 | return 0; | |
917 | } | |
918 | } | |
919 | ||
920 | if (val) | |
921 | { | |
922 | /* Can't set the breakpoint. */ | |
a77053c2 | 923 | if ( |
879bfdc2 | 924 | #if defined (DISABLE_UNSETTABLE_BREAK) |
a77053c2 MK |
925 | DISABLE_UNSETTABLE_BREAK (bpt->address) |
926 | #else | |
927 | solib_address (bpt->address) | |
928 | #endif | |
929 | ) | |
879bfdc2 DJ |
930 | { |
931 | /* See also: disable_breakpoints_in_shlibs. */ | |
932 | val = 0; | |
933 | bpt->owner->enable_state = bp_shlib_disabled; | |
934 | if (!*disabled_breaks) | |
935 | { | |
936 | fprintf_unfiltered (tmp_error_stream, | |
937 | "Cannot insert breakpoint %d.\n", | |
938 | bpt->owner->number); | |
939 | fprintf_unfiltered (tmp_error_stream, | |
940 | "Temporarily disabling shared library breakpoints:\n"); | |
941 | } | |
942 | *disabled_breaks = 1; | |
943 | fprintf_unfiltered (tmp_error_stream, | |
944 | "breakpoint #%d\n", bpt->owner->number); | |
945 | } | |
946 | else | |
879bfdc2 DJ |
947 | { |
948 | #ifdef ONE_PROCESS_WRITETEXT | |
949 | *process_warning = 1; | |
950 | #endif | |
951 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
952 | { | |
953 | *hw_breakpoint_error = 1; | |
954 | fprintf_unfiltered (tmp_error_stream, | |
955 | "Cannot insert hardware breakpoint %d.\n", | |
956 | bpt->owner->number); | |
957 | } | |
958 | else | |
959 | { | |
960 | fprintf_unfiltered (tmp_error_stream, | |
961 | "Cannot insert breakpoint %d.\n", | |
962 | bpt->owner->number); | |
963 | fprintf_filtered (tmp_error_stream, | |
964 | "Error accessing memory address "); | |
66bf4b3a | 965 | deprecated_print_address_numeric (bpt->address, 1, tmp_error_stream); |
879bfdc2 DJ |
966 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
967 | safe_strerror (val)); | |
968 | } | |
969 | ||
970 | } | |
971 | } | |
972 | else | |
973 | bpt->inserted = 1; | |
974 | ||
975 | return val; | |
976 | } | |
977 | ||
978 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
979 | /* NOTE drow/2003-09-08: This state only exists for removing | |
980 | watchpoints. It's not clear that it's necessary... */ | |
981 | && bpt->owner->disposition != disp_del_at_next_stop) | |
982 | { | |
983 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
984 | based on the expression. Ideally this should happen at a higher level, | |
985 | and there should be one bp_location for each computed address we | |
986 | must watch. As soon as a many-to-one mapping is available I'll | |
987 | convert this. */ | |
988 | ||
7789d0fa | 989 | int within_current_scope; |
879bfdc2 DJ |
990 | struct value *mark = value_mark (); |
991 | struct value *v; | |
7789d0fa | 992 | struct frame_id saved_frame_id; |
879bfdc2 | 993 | |
7789d0fa | 994 | /* Save the current frame's ID so we can restore it after |
879bfdc2 DJ |
995 | evaluating the watchpoint expression on its own frame. */ |
996 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
997 | took a frame parameter, so that we didn't have to change the | |
998 | selected frame. */ | |
7789d0fa | 999 | saved_frame_id = get_frame_id (deprecated_selected_frame); |
879bfdc2 DJ |
1000 | |
1001 | /* Determine if the watchpoint is within scope. */ | |
1002 | if (bpt->owner->exp_valid_block == NULL) | |
1003 | within_current_scope = 1; | |
1004 | else | |
1005 | { | |
1006 | struct frame_info *fi; | |
1007 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
1008 | within_current_scope = (fi != NULL); | |
1009 | if (within_current_scope) | |
1010 | select_frame (fi); | |
1011 | } | |
1012 | ||
1013 | if (within_current_scope) | |
1014 | { | |
7270d8f2 OF |
1015 | free_valchain (bpt); |
1016 | ||
879bfdc2 DJ |
1017 | /* Evaluate the expression and cut the chain of values |
1018 | produced off from the value chain. | |
1019 | ||
1020 | Make sure the value returned isn't lazy; we use | |
1021 | laziness to determine what memory GDB actually needed | |
1022 | in order to compute the value of the expression. */ | |
1023 | v = evaluate_expression (bpt->owner->exp); | |
0fd88904 | 1024 | value_contents (v); |
879bfdc2 DJ |
1025 | value_release_to_mark (mark); |
1026 | ||
1027 | bpt->owner->val_chain = v; | |
1028 | bpt->inserted = 1; | |
1029 | ||
1030 | /* Look at each value on the value chain. */ | |
17cf0ecd | 1031 | for (; v; v = value_next (v)) |
879bfdc2 DJ |
1032 | { |
1033 | /* If it's a memory location, and GDB actually needed | |
1034 | its contents to evaluate the expression, then we | |
1035 | must watch it. */ | |
1036 | if (VALUE_LVAL (v) == lval_memory | |
d69fe07e | 1037 | && ! value_lazy (v)) |
879bfdc2 | 1038 | { |
df407dfe | 1039 | struct type *vtype = check_typedef (value_type (v)); |
879bfdc2 DJ |
1040 | |
1041 | /* We only watch structs and arrays if user asked | |
1042 | for it explicitly, never if they just happen to | |
1043 | appear in the middle of some value chain. */ | |
1044 | if (v == bpt->owner->val_chain | |
1045 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
1046 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1047 | { | |
1048 | CORE_ADDR addr; | |
1049 | int len, type; | |
1050 | ||
df407dfe AC |
1051 | addr = VALUE_ADDRESS (v) + value_offset (v); |
1052 | len = TYPE_LENGTH (value_type (v)); | |
879bfdc2 DJ |
1053 | type = hw_write; |
1054 | if (bpt->owner->type == bp_read_watchpoint) | |
1055 | type = hw_read; | |
1056 | else if (bpt->owner->type == bp_access_watchpoint) | |
1057 | type = hw_access; | |
1058 | ||
1059 | val = target_insert_watchpoint (addr, len, type); | |
1060 | if (val == -1) | |
1061 | { | |
1062 | /* Don't exit the loop, try to insert | |
1063 | every value on the value chain. That's | |
1064 | because we will be removing all the | |
1065 | watches below, and removing a | |
1066 | watchpoint we didn't insert could have | |
1067 | adverse effects. */ | |
1068 | bpt->inserted = 0; | |
1069 | } | |
1070 | val = 0; | |
1071 | } | |
1072 | } | |
1073 | } | |
1074 | /* Failure to insert a watchpoint on any memory value in the | |
1075 | value chain brings us here. */ | |
1076 | if (!bpt->inserted) | |
1077 | { | |
0bde7532 | 1078 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
1079 | *hw_breakpoint_error = 1; |
1080 | fprintf_unfiltered (tmp_error_stream, | |
1081 | "Could not insert hardware watchpoint %d.\n", | |
1082 | bpt->owner->number); | |
1083 | val = -1; | |
1084 | } | |
1085 | } | |
1086 | else | |
1087 | { | |
a3f17187 AC |
1088 | printf_filtered (_("\ |
1089 | Hardware watchpoint %d deleted because the program has left the block \n\ | |
1090 | in which its expression is valid.\n"), | |
1091 | bpt->owner->number); | |
879bfdc2 DJ |
1092 | if (bpt->owner->related_breakpoint) |
1093 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
1094 | bpt->owner->disposition = disp_del_at_next_stop; | |
1095 | } | |
1096 | ||
7789d0fa AC |
1097 | /* Restore the selected frame. */ |
1098 | select_frame (frame_find_by_id (saved_frame_id)); | |
879bfdc2 DJ |
1099 | |
1100 | return val; | |
1101 | } | |
1102 | ||
1103 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
1104 | { | |
1105 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1106 | breakpoint. Once again, it would be better if this was represented | |
1107 | as two bp_locations. */ | |
1108 | ||
1109 | /* If we get here, we must have a callback mechanism for exception | |
1110 | events -- with g++ style embedded label support, we insert | |
1111 | ordinary breakpoints and not catchpoints. */ | |
8181d85f | 1112 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1113 | if (val) |
1114 | { | |
1115 | /* Couldn't set breakpoint for some reason */ | |
1116 | fprintf_unfiltered (tmp_error_stream, | |
1117 | "Cannot insert catchpoint %d; disabling it.\n", | |
1118 | bpt->owner->number); | |
1119 | fprintf_filtered (tmp_error_stream, | |
1120 | "Error accessing memory address "); | |
66bf4b3a | 1121 | deprecated_print_address_numeric (bpt->address, 1, tmp_error_stream); |
879bfdc2 DJ |
1122 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1123 | safe_strerror (val)); | |
1124 | bpt->owner->enable_state = bp_disabled; | |
1125 | } | |
1126 | else | |
1127 | { | |
1128 | /* Bp set, now make sure callbacks are enabled */ | |
1129 | /* Format possible error msg */ | |
1130 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1131 | bpt->owner->number); | |
1132 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1133 | int val; | |
1134 | args_for_catchpoint_enable args; | |
1135 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1136 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1137 | args.enable_p = 1; | |
1138 | val = catch_errors (cover_target_enable_exception_callback, | |
1139 | &args, message, RETURN_MASK_ALL); | |
1140 | do_cleanups (cleanups); | |
1141 | if (val != 0 && val != -1) | |
1142 | bpt->inserted = 1; | |
1143 | ||
1144 | /* Check if something went wrong; val == 0 can be ignored */ | |
1145 | if (val == -1) | |
1146 | { | |
1147 | /* something went wrong */ | |
1148 | fprintf_unfiltered (tmp_error_stream, | |
1149 | "Cannot insert catchpoint %d; disabling it.\n", | |
1150 | bpt->owner->number); | |
1151 | bpt->owner->enable_state = bp_disabled; | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | return val; | |
1156 | } | |
1157 | ||
1158 | else if (bpt->owner->type == bp_catch_fork | |
1159 | || bpt->owner->type == bp_catch_vfork | |
1160 | || bpt->owner->type == bp_catch_exec) | |
1161 | { | |
71fff37b AC |
1162 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1163 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1164 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1165 | bpt->owner->number); | |
1166 | if (e.reason < 0) | |
879bfdc2 DJ |
1167 | bpt->owner->enable_state = bp_disabled; |
1168 | else | |
1169 | bpt->inserted = 1; | |
1640b821 DJ |
1170 | |
1171 | /* We've already printed an error message if there was a problem | |
1172 | inserting this catchpoint, and we've disabled the catchpoint, | |
1173 | so just return success. */ | |
1174 | return 0; | |
879bfdc2 DJ |
1175 | } |
1176 | ||
1177 | return 0; | |
1178 | } | |
1179 | ||
c906108c SS |
1180 | /* insert_breakpoints is used when starting or continuing the program. |
1181 | remove_breakpoints is used when the program stops. | |
1182 | Both return zero if successful, | |
1183 | or an `errno' value if could not write the inferior. */ | |
1184 | ||
1185 | int | |
fba45db2 | 1186 | insert_breakpoints (void) |
c906108c | 1187 | { |
879bfdc2 | 1188 | struct bp_location *b, *temp; |
53a5351d | 1189 | int return_val = 0; /* return success code. */ |
c906108c SS |
1190 | int val = 0; |
1191 | int disabled_breaks = 0; | |
81d0cc19 GS |
1192 | int hw_breakpoint_error = 0; |
1193 | int process_warning = 0; | |
c906108c | 1194 | |
81d0cc19 GS |
1195 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1196 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1197 | ||
1198 | /* Explicitly mark the warning -- this will only be printed if | |
1199 | there was an error. */ | |
1200 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1201 | |
879bfdc2 DJ |
1202 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1203 | { | |
1204 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1205 | breakpoints should not be inserted. */ | |
468d015d | 1206 | if (!breakpoint_enabled (b->owner)) |
879bfdc2 DJ |
1207 | continue; |
1208 | ||
f365de73 AS |
1209 | /* There is no point inserting thread-specific breakpoints if the |
1210 | thread no longer exists. */ | |
1211 | if (b->owner->thread != -1 | |
1212 | && !valid_thread_id (b->owner->thread)) | |
1213 | continue; | |
1214 | ||
879bfdc2 DJ |
1215 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when |
1216 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1217 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1218 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1219 | { | |
1220 | struct value *val; | |
1221 | val = evaluate_expression (b->owner->exp); | |
1222 | release_value (val); | |
d69fe07e | 1223 | if (value_lazy (val)) |
879bfdc2 DJ |
1224 | value_fetch_lazy (val); |
1225 | b->owner->val = val; | |
1226 | } | |
a881cf8e | 1227 | |
879bfdc2 DJ |
1228 | val = insert_bp_location (b, tmp_error_stream, |
1229 | &disabled_breaks, &process_warning, | |
1230 | &hw_breakpoint_error); | |
1231 | if (val) | |
1232 | return_val = val; | |
1233 | } | |
c906108c | 1234 | |
879bfdc2 | 1235 | if (return_val) |
81d0cc19 GS |
1236 | { |
1237 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1238 | message about possibly exhausted resources. */ | |
879bfdc2 | 1239 | if (hw_breakpoint_error) |
81d0cc19 | 1240 | { |
c6510018 MS |
1241 | fprintf_unfiltered (tmp_error_stream, |
1242 | "Could not insert hardware breakpoints:\n\ | |
1243 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1244 | } |
c6510018 | 1245 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1246 | if (process_warning) |
c6510018 MS |
1247 | fprintf_unfiltered (tmp_error_stream, |
1248 | "The same program may be running in another process."); | |
1249 | #endif | |
81d0cc19 GS |
1250 | target_terminal_ours_for_output (); |
1251 | error_stream (tmp_error_stream); | |
1252 | } | |
53a5351d | 1253 | return return_val; |
c906108c SS |
1254 | } |
1255 | ||
c906108c | 1256 | int |
fba45db2 | 1257 | remove_breakpoints (void) |
c906108c | 1258 | { |
0bde7532 | 1259 | struct bp_location *b; |
c906108c SS |
1260 | int val; |
1261 | ||
0bde7532 | 1262 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1263 | { |
0bde7532 | 1264 | if (b->inserted) |
c5aa993b JM |
1265 | { |
1266 | val = remove_breakpoint (b, mark_uninserted); | |
1267 | if (val != 0) | |
1268 | return val; | |
1269 | } | |
1270 | } | |
c906108c SS |
1271 | return 0; |
1272 | } | |
1273 | ||
692590c1 | 1274 | int |
80ce1ecb | 1275 | remove_hw_watchpoints (void) |
692590c1 | 1276 | { |
0bde7532 | 1277 | struct bp_location *b; |
692590c1 MS |
1278 | int val; |
1279 | ||
0bde7532 | 1280 | ALL_BP_LOCATIONS (b) |
692590c1 | 1281 | { |
0bde7532 | 1282 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1283 | { |
1284 | val = remove_breakpoint (b, mark_uninserted); | |
1285 | if (val != 0) | |
1286 | return val; | |
1287 | } | |
1288 | } | |
1289 | return 0; | |
1290 | } | |
1291 | ||
c906108c | 1292 | int |
fba45db2 | 1293 | reattach_breakpoints (int pid) |
c906108c | 1294 | { |
0bde7532 | 1295 | struct bp_location *b; |
c906108c | 1296 | int val; |
ce696e05 | 1297 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1298 | |
ce696e05 KB |
1299 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1300 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1301 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1302 | { |
0bde7532 | 1303 | if (b->inserted) |
c5aa993b JM |
1304 | { |
1305 | remove_breakpoint (b, mark_inserted); | |
765dc015 VP |
1306 | /* Note: since we insert a breakpoint right after removing, |
1307 | any decisions about automatically using hardware breakpoints | |
1308 | made in insert_bp_location are preserved. */ | |
0bde7532 | 1309 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1310 | val = target_insert_hw_breakpoint (&b->target_info); |
c5aa993b | 1311 | else |
8181d85f | 1312 | val = target_insert_breakpoint (&b->target_info); |
0bde7532 DJ |
1313 | /* FIXME drow/2003-10-07: This doesn't handle any other kinds of |
1314 | breakpoints. It's wrong for watchpoints, for example. */ | |
c5aa993b JM |
1315 | if (val != 0) |
1316 | { | |
ce696e05 | 1317 | do_cleanups (old_chain); |
c5aa993b JM |
1318 | return val; |
1319 | } | |
1320 | } | |
1321 | } | |
ce696e05 | 1322 | do_cleanups (old_chain); |
c906108c SS |
1323 | return 0; |
1324 | } | |
1325 | ||
1326 | void | |
fba45db2 | 1327 | update_breakpoints_after_exec (void) |
c906108c | 1328 | { |
c5aa993b JM |
1329 | struct breakpoint *b; |
1330 | struct breakpoint *temp; | |
c906108c SS |
1331 | |
1332 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1333 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1334 | shadow is NOT valid after an exec()! */ | |
1335 | mark_breakpoints_out (); | |
1336 | ||
1337 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1338 | { |
1339 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1340 | if (b->type == bp_shlib_event) | |
1341 | { | |
1342 | delete_breakpoint (b); | |
1343 | continue; | |
1344 | } | |
c906108c | 1345 | |
1900040c MS |
1346 | /* Thread event breakpoints must be set anew after an exec(), |
1347 | as must overlay event breakpoints. */ | |
1348 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1349 | { |
1350 | delete_breakpoint (b); | |
1351 | continue; | |
1352 | } | |
1353 | ||
c5aa993b JM |
1354 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1355 | if (b->type == bp_step_resume) | |
1356 | { | |
1357 | delete_breakpoint (b); | |
1358 | continue; | |
1359 | } | |
1360 | ||
1361 | /* Ditto the sigtramp handler breakpoints. */ | |
1362 | if (b->type == bp_through_sigtramp) | |
1363 | { | |
1364 | delete_breakpoint (b); | |
1365 | continue; | |
1366 | } | |
1367 | ||
1368 | /* Ditto the exception-handling catchpoints. */ | |
1369 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1370 | { | |
1371 | delete_breakpoint (b); | |
1372 | continue; | |
1373 | } | |
1374 | ||
1375 | /* Don't delete an exec catchpoint, because else the inferior | |
1376 | won't stop when it ought! | |
1377 | ||
1378 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1379 | on this target, we may not be able to stop when the vfork is |
1380 | seen, but only when the subsequent exec is seen. (And because | |
1381 | deleting fork catchpoints here but not vfork catchpoints will | |
1382 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1383 | |
1384 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1385 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1386 | automagically. Certainly on HP-UX that's true. |
1387 | ||
1388 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
41989fcd AC |
1389 | valid code address on some platforms (like the mn10300 |
1390 | simulators). We shouldn't assign any special interpretation to | |
1391 | a breakpoint with a zero address. And in fact, GDB doesn't --- | |
1392 | I can't see what that comment above is talking about. As far | |
1393 | as I can tell, setting the address of a | |
644a1fe1 JB |
1394 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero |
1395 | is meaningless, since those are implemented with HP-UX kernel | |
1396 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1397 | if ((b->type == bp_catch_exec) || |
1398 | (b->type == bp_catch_vfork) || | |
1399 | (b->type == bp_catch_fork)) | |
1400 | { | |
67985547 | 1401 | b->loc->address = (CORE_ADDR) 0; |
c5aa993b JM |
1402 | continue; |
1403 | } | |
1404 | ||
1405 | /* bp_finish is a special case. The only way we ought to be able | |
1406 | to see one of these when an exec() has happened, is if the user | |
1407 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1408 | carries them to the call-site of the current callee, by setting | |
1409 | a temporary bp there and resuming. But in this case, the finish | |
1410 | will carry them entirely through the vfork & exec. | |
1411 | ||
1412 | We don't want to allow a bp_finish to remain inserted now. But | |
1413 | we can't safely delete it, 'cause finish_command has a handle to | |
1414 | the bp on a bpstat, and will later want to delete it. There's a | |
1415 | chance (and I've seen it happen) that if we delete the bp_finish | |
1416 | here, that its storage will get reused by the time finish_command | |
1417 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1418 | We really must allow finish_command to delete a bp_finish. | |
1419 | ||
53a5351d JM |
1420 | In the absense of a general solution for the "how do we know |
1421 | it's safe to delete something others may have handles to?" | |
1422 | problem, what we'll do here is just uninsert the bp_finish, and | |
1423 | let finish_command delete it. | |
1424 | ||
1425 | (We know the bp_finish is "doomed" in the sense that it's | |
1426 | momentary, and will be deleted as soon as finish_command sees | |
1427 | the inferior stopped. So it doesn't matter that the bp's | |
1428 | address is probably bogus in the new a.out, unlike e.g., the | |
1429 | solib breakpoints.) */ | |
c5aa993b | 1430 | |
c5aa993b JM |
1431 | if (b->type == bp_finish) |
1432 | { | |
1433 | continue; | |
1434 | } | |
1435 | ||
1436 | /* Without a symbolic address, we have little hope of the | |
1437 | pre-exec() address meaning the same thing in the post-exec() | |
1438 | a.out. */ | |
1439 | if (b->addr_string == NULL) | |
1440 | { | |
1441 | delete_breakpoint (b); | |
1442 | continue; | |
1443 | } | |
1444 | ||
1445 | /* If this breakpoint has survived the above battery of checks, then | |
1446 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1447 | to a target address, rather than reusing the old evaluation. |
1448 | ||
1449 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1450 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1451 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1452 | the breakpoint's address from scratch, or deletes it if it can't. | |
1453 | So I think this assignment could be deleted without effect. */ | |
67985547 | 1454 | b->loc->address = (CORE_ADDR) 0; |
c5aa993b | 1455 | } |
1900040c MS |
1456 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1457 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1458 | } |
1459 | ||
1460 | int | |
fba45db2 | 1461 | detach_breakpoints (int pid) |
c906108c | 1462 | { |
0bde7532 | 1463 | struct bp_location *b; |
c906108c | 1464 | int val; |
ce696e05 | 1465 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1466 | |
39f77062 | 1467 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1468 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1469 | |
ce696e05 KB |
1470 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1471 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1472 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1473 | { |
0bde7532 | 1474 | if (b->inserted) |
c5aa993b JM |
1475 | { |
1476 | val = remove_breakpoint (b, mark_inserted); | |
1477 | if (val != 0) | |
1478 | { | |
ce696e05 | 1479 | do_cleanups (old_chain); |
c5aa993b JM |
1480 | return val; |
1481 | } | |
1482 | } | |
1483 | } | |
ce696e05 | 1484 | do_cleanups (old_chain); |
c906108c SS |
1485 | return 0; |
1486 | } | |
1487 | ||
1488 | static int | |
0bde7532 | 1489 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1490 | { |
1491 | int val; | |
c5aa993b | 1492 | |
0bde7532 | 1493 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1494 | /* Permanent breakpoints cannot be inserted or removed. */ |
1495 | return 0; | |
1496 | ||
0bde7532 | 1497 | if (b->owner->type == bp_none) |
8a3fe4f8 | 1498 | warning (_("attempted to remove apparently deleted breakpoint #%d?"), |
0bde7532 DJ |
1499 | b->owner->number); |
1500 | ||
1501 | if (b->loc_type == bp_loc_software_breakpoint | |
1502 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1503 | { |
c02f5703 MS |
1504 | /* "Normal" instruction breakpoint: either the standard |
1505 | trap-instruction bp (bp_breakpoint), or a | |
1506 | bp_hardware_breakpoint. */ | |
1507 | ||
1508 | /* First check to see if we have to handle an overlay. */ | |
1509 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1510 | || b->section == NULL |
1511 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1512 | { |
1513 | /* No overlay handling: just remove the breakpoint. */ | |
1514 | ||
0bde7532 | 1515 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1516 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1517 | else |
8181d85f | 1518 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1519 | } |
c906108c SS |
1520 | else |
1521 | { | |
c02f5703 MS |
1522 | /* This breakpoint is in an overlay section. |
1523 | Did we set a breakpoint at the LMA? */ | |
1524 | if (!overlay_events_enabled) | |
1525 | { | |
1526 | /* Yes -- overlay event support is not active, so we | |
1527 | should have set a breakpoint at the LMA. Remove it. | |
1528 | */ | |
c02f5703 MS |
1529 | /* Ignore any failures: if the LMA is in ROM, we will |
1530 | have already warned when we failed to insert it. */ | |
0bde7532 | 1531 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1532 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1533 | else |
8181d85f | 1534 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1535 | } |
1536 | /* Did we set a breakpoint at the VMA? | |
1537 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1538 | if (b->inserted) |
c906108c | 1539 | { |
c02f5703 MS |
1540 | /* Yes -- remove it. Previously we did not bother to |
1541 | remove the breakpoint if the section had been | |
1542 | unmapped, but let's not rely on that being safe. We | |
1543 | don't know what the overlay manager might do. */ | |
0bde7532 | 1544 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1545 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1546 | else |
8181d85f | 1547 | val = target_remove_breakpoint (&b->target_info); |
c906108c | 1548 | } |
c02f5703 MS |
1549 | else |
1550 | { | |
1551 | /* No -- not inserted, so no need to remove. No error. */ | |
1552 | val = 0; | |
1553 | } | |
c906108c SS |
1554 | } |
1555 | if (val) | |
1556 | return val; | |
0bde7532 | 1557 | b->inserted = (is == mark_inserted); |
c906108c | 1558 | } |
0bde7532 | 1559 | else if (b->loc_type == bp_loc_hardware_watchpoint |
468d015d | 1560 | && breakpoint_enabled (b->owner) |
0bde7532 | 1561 | && !b->duplicate) |
c906108c | 1562 | { |
278cd55f AC |
1563 | struct value *v; |
1564 | struct value *n; | |
c5aa993b | 1565 | |
0bde7532 | 1566 | b->inserted = (is == mark_inserted); |
c906108c | 1567 | /* Walk down the saved value chain. */ |
17cf0ecd | 1568 | for (v = b->owner->val_chain; v; v = value_next (v)) |
c906108c SS |
1569 | { |
1570 | /* For each memory reference remove the watchpoint | |
1571 | at that address. */ | |
5c44784c | 1572 | if (VALUE_LVAL (v) == lval_memory |
d69fe07e | 1573 | && ! value_lazy (v)) |
c906108c | 1574 | { |
df407dfe | 1575 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 | 1576 | |
0bde7532 | 1577 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1578 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1579 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1580 | { | |
1581 | CORE_ADDR addr; | |
1582 | int len, type; | |
1583 | ||
df407dfe AC |
1584 | addr = VALUE_ADDRESS (v) + value_offset (v); |
1585 | len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 1586 | type = hw_write; |
0bde7532 | 1587 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1588 | type = hw_read; |
0bde7532 | 1589 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1590 | type = hw_access; |
1591 | ||
1592 | val = target_remove_watchpoint (addr, len, type); | |
1593 | if (val == -1) | |
0bde7532 | 1594 | b->inserted = 1; |
2e70b7b9 MS |
1595 | val = 0; |
1596 | } | |
c906108c SS |
1597 | } |
1598 | } | |
1599 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1600 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1601 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1602 | b->owner->number); |
c906108c | 1603 | } |
0bde7532 DJ |
1604 | else if ((b->owner->type == bp_catch_fork || |
1605 | b->owner->type == bp_catch_vfork || | |
1606 | b->owner->type == bp_catch_exec) | |
468d015d | 1607 | && breakpoint_enabled (b->owner) |
0bde7532 | 1608 | && !b->duplicate) |
c906108c SS |
1609 | { |
1610 | val = -1; | |
0bde7532 | 1611 | switch (b->owner->type) |
c5aa993b JM |
1612 | { |
1613 | case bp_catch_fork: | |
39f77062 | 1614 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1615 | break; |
1616 | case bp_catch_vfork: | |
39f77062 | 1617 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1618 | break; |
1619 | case bp_catch_exec: | |
39f77062 | 1620 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1621 | break; |
ac9a91a7 | 1622 | default: |
8a3fe4f8 | 1623 | warning (_("Internal error, %s line %d."), __FILE__, __LINE__); |
ac9a91a7 | 1624 | break; |
c5aa993b | 1625 | } |
c906108c SS |
1626 | if (val) |
1627 | return val; | |
0bde7532 | 1628 | b->inserted = (is == mark_inserted); |
c906108c | 1629 | } |
0bde7532 DJ |
1630 | else if ((b->owner->type == bp_catch_catch || |
1631 | b->owner->type == bp_catch_throw) | |
468d015d | 1632 | && breakpoint_enabled (b->owner) |
0bde7532 | 1633 | && !b->duplicate) |
c906108c | 1634 | { |
8181d85f | 1635 | val = target_remove_breakpoint (&b->target_info); |
c906108c | 1636 | if (val) |
c5aa993b | 1637 | return val; |
0bde7532 | 1638 | b->inserted = (is == mark_inserted); |
c906108c | 1639 | } |
0bde7532 DJ |
1640 | else if (ep_is_exception_catchpoint (b->owner) |
1641 | && b->inserted /* sometimes previous insert doesn't happen */ | |
468d015d | 1642 | && breakpoint_enabled (b->owner) |
0bde7532 | 1643 | && !b->duplicate) |
c906108c | 1644 | { |
8181d85f | 1645 | val = target_remove_breakpoint (&b->target_info); |
c906108c | 1646 | if (val) |
c5aa993b JM |
1647 | return val; |
1648 | ||
0bde7532 | 1649 | b->inserted = (is == mark_inserted); |
c906108c SS |
1650 | } |
1651 | ||
1652 | return 0; | |
1653 | } | |
1654 | ||
1655 | /* Clear the "inserted" flag in all breakpoints. */ | |
1656 | ||
1657 | void | |
fba45db2 | 1658 | mark_breakpoints_out (void) |
c906108c | 1659 | { |
075f6582 | 1660 | struct bp_location *bpt; |
c906108c | 1661 | |
075f6582 DJ |
1662 | ALL_BP_LOCATIONS (bpt) |
1663 | bpt->inserted = 0; | |
c906108c SS |
1664 | } |
1665 | ||
53a5351d JM |
1666 | /* Clear the "inserted" flag in all breakpoints and delete any |
1667 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1668 | |
1669 | Plus other such housekeeping that has to be done for breakpoints | |
1670 | between runs. | |
1671 | ||
53a5351d JM |
1672 | Note: this function gets called at the end of a run (by |
1673 | generic_mourn_inferior) and when a run begins (by | |
1674 | init_wait_for_inferior). */ | |
c906108c SS |
1675 | |
1676 | ||
1677 | ||
1678 | void | |
fba45db2 | 1679 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1680 | { |
52f0bd74 | 1681 | struct breakpoint *b, *temp; |
075f6582 | 1682 | struct bp_location *bpt; |
c906108c SS |
1683 | static int warning_needed = 0; |
1684 | ||
075f6582 DJ |
1685 | ALL_BP_LOCATIONS (bpt) |
1686 | bpt->inserted = 0; | |
1687 | ||
c906108c | 1688 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1689 | { |
c5aa993b JM |
1690 | switch (b->type) |
1691 | { | |
1692 | case bp_call_dummy: | |
1693 | case bp_watchpoint_scope: | |
c906108c | 1694 | |
c5aa993b JM |
1695 | /* If the call dummy breakpoint is at the entry point it will |
1696 | cause problems when the inferior is rerun, so we better | |
1697 | get rid of it. | |
c906108c | 1698 | |
c5aa993b JM |
1699 | Also get rid of scope breakpoints. */ |
1700 | delete_breakpoint (b); | |
1701 | break; | |
c906108c | 1702 | |
c5aa993b JM |
1703 | case bp_watchpoint: |
1704 | case bp_hardware_watchpoint: | |
1705 | case bp_read_watchpoint: | |
1706 | case bp_access_watchpoint: | |
c906108c | 1707 | |
c5aa993b JM |
1708 | /* Likewise for watchpoints on local expressions. */ |
1709 | if (b->exp_valid_block != NULL) | |
1710 | delete_breakpoint (b); | |
c860120c PM |
1711 | if (context == inf_starting) |
1712 | { | |
1713 | /* Reset val field to force reread of starting value | |
1714 | in insert_breakpoints. */ | |
1715 | if (b->val) | |
1716 | value_free (b->val); | |
1717 | b->val = NULL; | |
1718 | } | |
c5aa993b JM |
1719 | break; |
1720 | default: | |
1721 | /* Likewise for exception catchpoints in dynamic-linked | |
1722 | executables where required */ | |
f83f82bc AC |
1723 | if (ep_is_exception_catchpoint (b) |
1724 | && deprecated_exception_catchpoints_are_fragile) | |
c5aa993b JM |
1725 | { |
1726 | warning_needed = 1; | |
c906108c | 1727 | delete_breakpoint (b); |
c5aa993b JM |
1728 | } |
1729 | break; | |
1730 | } | |
1731 | } | |
c906108c | 1732 | |
f83f82bc AC |
1733 | if (deprecated_exception_catchpoints_are_fragile) |
1734 | deprecated_exception_support_initialized = 0; | |
c906108c | 1735 | |
c5aa993b | 1736 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1737 | if (warning_needed && (context != inf_exited)) |
1738 | { | |
8a3fe4f8 AC |
1739 | warning (_("Exception catchpoints from last run were deleted.\n" |
1740 | "You must reinsert them explicitly.")); | |
c906108c | 1741 | warning_needed = 0; |
c5aa993b | 1742 | } |
c906108c SS |
1743 | } |
1744 | ||
c2c6d25f JM |
1745 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1746 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1747 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1748 | permanent breakpoint. | |
1749 | - When continuing from a location with an ordinary breakpoint, we | |
1750 | actually single step once before calling insert_breakpoints. | |
1751 | - When continuing from a localion with a permanent breakpoint, we | |
1752 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1753 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1754 | |
c2c6d25f | 1755 | enum breakpoint_here |
fba45db2 | 1756 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1757 | { |
075f6582 | 1758 | struct bp_location *bpt; |
c2c6d25f | 1759 | int any_breakpoint_here = 0; |
c906108c | 1760 | |
075f6582 DJ |
1761 | ALL_BP_LOCATIONS (bpt) |
1762 | { | |
1763 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1764 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1765 | continue; | |
1766 | ||
468d015d | 1767 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1768 | || bpt->owner->enable_state == bp_permanent) |
1769 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1770 | { | |
1771 | if (overlay_debugging | |
1772 | && section_is_overlay (bpt->section) | |
1773 | && !section_is_mapped (bpt->section)) | |
1774 | continue; /* unmapped overlay -- can't be a match */ | |
1775 | else if (bpt->owner->enable_state == bp_permanent) | |
1776 | return permanent_breakpoint_here; | |
1777 | else | |
1778 | any_breakpoint_here = 1; | |
1779 | } | |
1780 | } | |
c906108c | 1781 | |
c2c6d25f | 1782 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1783 | } |
1784 | ||
c2c6d25f | 1785 | |
53a5351d JM |
1786 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1787 | but it only returns true if there is actually a breakpoint inserted | |
1788 | at PC. */ | |
c906108c SS |
1789 | |
1790 | int | |
fba45db2 | 1791 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1792 | { |
075f6582 | 1793 | struct bp_location *bpt; |
c906108c | 1794 | |
075f6582 | 1795 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1796 | { |
075f6582 DJ |
1797 | if (bpt->loc_type != bp_loc_software_breakpoint |
1798 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1799 | continue; | |
1800 | ||
1801 | if (bpt->inserted | |
1802 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1803 | { | |
1804 | if (overlay_debugging | |
1805 | && section_is_overlay (bpt->section) | |
1806 | && !section_is_mapped (bpt->section)) | |
1807 | continue; /* unmapped overlay -- can't be a match */ | |
1808 | else | |
1809 | return 1; | |
1810 | } | |
c5aa993b | 1811 | } |
c906108c SS |
1812 | |
1813 | return 0; | |
1814 | } | |
1815 | ||
4fa8626c DJ |
1816 | /* This function returns non-zero iff there is a software breakpoint |
1817 | inserted at PC. */ | |
1818 | ||
1819 | int | |
1820 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1821 | { | |
1822 | struct bp_location *bpt; | |
1823 | int any_breakpoint_here = 0; | |
1824 | ||
1825 | ALL_BP_LOCATIONS (bpt) | |
1826 | { | |
1827 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1828 | continue; | |
1829 | ||
1830 | if ((breakpoint_enabled (bpt->owner) | |
1831 | || bpt->owner->enable_state == bp_permanent) | |
1832 | && bpt->inserted | |
1833 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1834 | { | |
1835 | if (overlay_debugging | |
1836 | && section_is_overlay (bpt->section) | |
1837 | && !section_is_mapped (bpt->section)) | |
1838 | continue; /* unmapped overlay -- can't be a match */ | |
1839 | else | |
1840 | return 1; | |
1841 | } | |
1842 | } | |
1843 | ||
1844 | return 0; | |
1845 | } | |
1846 | ||
075f6582 DJ |
1847 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1848 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1849 | |
1850 | int | |
39f77062 | 1851 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1852 | { |
075f6582 | 1853 | struct bp_location *bpt; |
c906108c SS |
1854 | int thread; |
1855 | ||
39f77062 | 1856 | thread = pid_to_thread_id (ptid); |
c906108c | 1857 | |
075f6582 | 1858 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1859 | { |
075f6582 DJ |
1860 | if (bpt->loc_type != bp_loc_software_breakpoint |
1861 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1862 | continue; | |
1863 | ||
468d015d | 1864 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1865 | || bpt->owner->enable_state == bp_permanent) |
1866 | && bpt->address == pc | |
1867 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1868 | { | |
1869 | if (overlay_debugging | |
1870 | && section_is_overlay (bpt->section) | |
1871 | && !section_is_mapped (bpt->section)) | |
1872 | continue; /* unmapped overlay -- can't be a match */ | |
1873 | else | |
1874 | return 1; | |
1875 | } | |
c5aa993b | 1876 | } |
c906108c SS |
1877 | |
1878 | return 0; | |
1879 | } | |
c906108c | 1880 | \f |
c5aa993b | 1881 | |
c906108c SS |
1882 | /* bpstat stuff. External routines' interfaces are documented |
1883 | in breakpoint.h. */ | |
1884 | ||
1885 | int | |
fba45db2 | 1886 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1887 | { |
1888 | return | |
1889 | (ep->type == bp_catch_load) | |
1890 | || (ep->type == bp_catch_unload) | |
1891 | || (ep->type == bp_catch_fork) | |
1892 | || (ep->type == bp_catch_vfork) | |
1893 | || (ep->type == bp_catch_exec) | |
1894 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1895 | || (ep->type == bp_catch_throw); |
c906108c | 1896 | |
c5aa993b | 1897 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1898 | } |
c5aa993b | 1899 | |
c906108c | 1900 | int |
fba45db2 | 1901 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1902 | { |
1903 | return | |
1904 | (ep->type == bp_catch_load) | |
d85310f7 | 1905 | || (ep->type == bp_catch_unload); |
c906108c SS |
1906 | } |
1907 | ||
1908 | int | |
fba45db2 | 1909 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1910 | { |
1911 | return | |
1912 | (ep->type == bp_catch_catch) | |
d85310f7 | 1913 | || (ep->type == bp_catch_throw); |
c906108c SS |
1914 | } |
1915 | ||
1916 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1917 | Also free any storage that is part of a bpstat. */ | |
1918 | ||
1919 | void | |
fba45db2 | 1920 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1921 | { |
1922 | bpstat p; | |
1923 | bpstat q; | |
1924 | ||
1925 | if (bsp == 0) | |
1926 | return; | |
1927 | p = *bsp; | |
1928 | while (p != NULL) | |
1929 | { | |
1930 | q = p->next; | |
1931 | if (p->old_val != NULL) | |
1932 | value_free (p->old_val); | |
c2b8ed2c | 1933 | free_command_lines (&p->commands); |
b8c9b27d | 1934 | xfree (p); |
c906108c SS |
1935 | p = q; |
1936 | } | |
1937 | *bsp = NULL; | |
1938 | } | |
1939 | ||
1940 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1941 | is part of the bpstat is copied as well. */ | |
1942 | ||
1943 | bpstat | |
fba45db2 | 1944 | bpstat_copy (bpstat bs) |
c906108c SS |
1945 | { |
1946 | bpstat p = NULL; | |
1947 | bpstat tmp; | |
1948 | bpstat retval = NULL; | |
1949 | ||
1950 | if (bs == NULL) | |
1951 | return bs; | |
1952 | ||
1953 | for (; bs != NULL; bs = bs->next) | |
1954 | { | |
1955 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1956 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1957 | if (bs->commands != NULL) |
1958 | tmp->commands = copy_command_lines (bs->commands); | |
1959 | if (bs->old_val != NULL) | |
1960 | tmp->old_val = value_copy (bs->old_val); | |
1961 | ||
c906108c SS |
1962 | if (p == NULL) |
1963 | /* This is the first thing in the chain. */ | |
1964 | retval = tmp; | |
1965 | else | |
1966 | p->next = tmp; | |
1967 | p = tmp; | |
1968 | } | |
1969 | p->next = NULL; | |
1970 | return retval; | |
1971 | } | |
1972 | ||
1973 | /* Find the bpstat associated with this breakpoint */ | |
1974 | ||
1975 | bpstat | |
fba45db2 | 1976 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1977 | { |
c5aa993b JM |
1978 | if (bsp == NULL) |
1979 | return NULL; | |
c906108c | 1980 | |
c5aa993b JM |
1981 | for (; bsp != NULL; bsp = bsp->next) |
1982 | { | |
1983 | if (bsp->breakpoint_at == breakpoint) | |
1984 | return bsp; | |
1985 | } | |
c906108c SS |
1986 | return NULL; |
1987 | } | |
1988 | ||
1989 | /* Find a step_resume breakpoint associated with this bpstat. | |
1990 | (If there are multiple step_resume bp's on the list, this function | |
1991 | will arbitrarily pick one.) | |
1992 | ||
1993 | It is an error to use this function if BPSTAT doesn't contain a | |
1994 | step_resume breakpoint. | |
1995 | ||
1996 | See wait_for_inferior's use of this function. */ | |
1997 | struct breakpoint * | |
fba45db2 | 1998 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1999 | { |
8601f500 MS |
2000 | int current_thread; |
2001 | ||
8a3fe4f8 | 2002 | gdb_assert (bsp != NULL); |
c906108c | 2003 | |
8601f500 MS |
2004 | current_thread = pid_to_thread_id (inferior_ptid); |
2005 | ||
c906108c SS |
2006 | for (; bsp != NULL; bsp = bsp->next) |
2007 | { | |
2008 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
2009 | (bsp->breakpoint_at->type == bp_step_resume) && |
2010 | (bsp->breakpoint_at->thread == current_thread || | |
2011 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 2012 | return bsp->breakpoint_at; |
c906108c SS |
2013 | } |
2014 | ||
8a3fe4f8 | 2015 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2016 | } |
2017 | ||
2018 | ||
2019 | /* Return the breakpoint number of the first breakpoint we are stopped | |
2020 | at. *BSP upon return is a bpstat which points to the remaining | |
2021 | breakpoints stopped at (but which is not guaranteed to be good for | |
2022 | anything but further calls to bpstat_num). | |
2023 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
2024 | ||
2025 | int | |
fba45db2 | 2026 | bpstat_num (bpstat *bsp) |
c906108c SS |
2027 | { |
2028 | struct breakpoint *b; | |
2029 | ||
2030 | if ((*bsp) == NULL) | |
2031 | return 0; /* No more breakpoint values */ | |
2032 | else | |
2033 | { | |
2034 | b = (*bsp)->breakpoint_at; | |
2035 | *bsp = (*bsp)->next; | |
2036 | if (b == NULL) | |
2037 | return -1; /* breakpoint that's been deleted since */ | |
2038 | else | |
c5aa993b | 2039 | return b->number; /* We have its number */ |
c906108c SS |
2040 | } |
2041 | } | |
2042 | ||
2043 | /* Modify BS so that the actions will not be performed. */ | |
2044 | ||
2045 | void | |
fba45db2 | 2046 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2047 | { |
2048 | for (; bs != NULL; bs = bs->next) | |
2049 | { | |
c2b8ed2c | 2050 | free_command_lines (&bs->commands); |
c906108c SS |
2051 | if (bs->old_val != NULL) |
2052 | { | |
2053 | value_free (bs->old_val); | |
2054 | bs->old_val = NULL; | |
2055 | } | |
2056 | } | |
2057 | } | |
2058 | ||
2059 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2060 | static void |
4efb68b1 | 2061 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2062 | { |
2063 | executing_breakpoint_commands = 0; | |
2064 | } | |
2065 | ||
2066 | /* Execute all the commands associated with all the breakpoints at this | |
2067 | location. Any of these commands could cause the process to proceed | |
2068 | beyond this point, etc. We look out for such changes by checking | |
2069 | the global "breakpoint_proceeded" after each command. */ | |
2070 | ||
2071 | void | |
fba45db2 | 2072 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2073 | { |
2074 | bpstat bs; | |
2075 | struct cleanup *old_chain; | |
c906108c SS |
2076 | |
2077 | /* Avoid endless recursion if a `source' command is contained | |
2078 | in bs->commands. */ | |
2079 | if (executing_breakpoint_commands) | |
2080 | return; | |
2081 | ||
2082 | executing_breakpoint_commands = 1; | |
2083 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2084 | ||
2085 | top: | |
2086 | /* Note that (as of this writing), our callers all appear to | |
2087 | be passing us the address of global stop_bpstat. And, if | |
2088 | our calls to execute_control_command cause the inferior to | |
2089 | proceed, that global (and hence, *bsp) will change. | |
2090 | ||
2091 | We must be careful to not touch *bsp unless the inferior | |
2092 | has not proceeded. */ | |
2093 | ||
2094 | /* This pointer will iterate over the list of bpstat's. */ | |
2095 | bs = *bsp; | |
2096 | ||
2097 | breakpoint_proceeded = 0; | |
2098 | for (; bs != NULL; bs = bs->next) | |
2099 | { | |
6c50ab1c JB |
2100 | struct command_line *cmd; |
2101 | struct cleanup *this_cmd_tree_chain; | |
2102 | ||
2103 | /* Take ownership of the BSP's command tree, if it has one. | |
2104 | ||
2105 | The command tree could legitimately contain commands like | |
2106 | 'step' and 'next', which call clear_proceed_status, which | |
2107 | frees stop_bpstat's command tree. To make sure this doesn't | |
2108 | free the tree we're executing out from under us, we need to | |
2109 | take ownership of the tree ourselves. Since a given bpstat's | |
2110 | commands are only executed once, we don't need to copy it; we | |
2111 | can clear the pointer in the bpstat, and make sure we free | |
2112 | the tree when we're done. */ | |
c906108c | 2113 | cmd = bs->commands; |
6c50ab1c JB |
2114 | bs->commands = 0; |
2115 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2116 | ||
c906108c SS |
2117 | while (cmd != NULL) |
2118 | { | |
2119 | execute_control_command (cmd); | |
2120 | ||
2121 | if (breakpoint_proceeded) | |
2122 | break; | |
2123 | else | |
2124 | cmd = cmd->next; | |
2125 | } | |
6c50ab1c JB |
2126 | |
2127 | /* We can free this command tree now. */ | |
2128 | do_cleanups (this_cmd_tree_chain); | |
2129 | ||
c906108c SS |
2130 | if (breakpoint_proceeded) |
2131 | /* The inferior is proceeded by the command; bomb out now. | |
2132 | The bpstat chain has been blown away by wait_for_inferior. | |
2133 | But since execution has stopped again, there is a new bpstat | |
2134 | to look at, so start over. */ | |
2135 | goto top; | |
c906108c | 2136 | } |
c2b8ed2c | 2137 | do_cleanups (old_chain); |
c906108c SS |
2138 | } |
2139 | ||
e514a9d6 | 2140 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2141 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2142 | by having it set different print_it values. |
2143 | ||
2144 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2145 | through the bpstat list of things causing this stop, calling the | |
2146 | print_bp_stop_message function on each one. The behavior of the | |
2147 | print_bp_stop_message function depends on the print_it field of | |
2148 | bpstat. If such field so indicates, call this function here. | |
2149 | ||
2150 | Return values from this routine (ultimately used by bpstat_print() | |
2151 | and normal_stop() to decide what to do): | |
2152 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2153 | don't print anything else. | |
2154 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2155 | that something to be followed by a location. | |
2156 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2157 | that something to be followed by a location. | |
2158 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2159 | analysis. */ | |
c906108c | 2160 | |
917317f4 | 2161 | static enum print_stop_action |
fba45db2 | 2162 | print_it_typical (bpstat bs) |
c906108c | 2163 | { |
3b31d625 | 2164 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2165 | struct ui_stream *stb; |
2166 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2167 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2168 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2169 | which has since been deleted. */ | |
e514a9d6 | 2170 | if (bs->breakpoint_at == NULL) |
917317f4 | 2171 | return PRINT_UNKNOWN; |
c906108c | 2172 | |
e514a9d6 | 2173 | switch (bs->breakpoint_at->type) |
c906108c | 2174 | { |
e514a9d6 JM |
2175 | case bp_breakpoint: |
2176 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2177 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2178 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2179 | bs->breakpoint_at->loc->address, | |
76897487 | 2180 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2181 | annotate_breakpoint (bs->breakpoint_at->number); |
2182 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2183 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2184 | ui_out_field_string (uiout, "reason", |
2185 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8b93c638 JM |
2186 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2187 | ui_out_text (uiout, ", "); | |
2188 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2189 | break; |
2190 | ||
2191 | case bp_shlib_event: | |
917317f4 JM |
2192 | /* Did we stop because the user set the stop_on_solib_events |
2193 | variable? (If so, we report this as a generic, "Stopped due | |
2194 | to shlib event" message.) */ | |
a3f17187 | 2195 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2196 | return PRINT_NOTHING; |
2197 | break; | |
2198 | ||
c4093a6a JM |
2199 | case bp_thread_event: |
2200 | /* Not sure how we will get here. | |
2201 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2202 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2203 | return PRINT_NOTHING; |
2204 | break; | |
2205 | ||
1900040c MS |
2206 | case bp_overlay_event: |
2207 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2208 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2209 | return PRINT_NOTHING; |
2210 | break; | |
2211 | ||
e514a9d6 | 2212 | case bp_catch_load: |
c906108c | 2213 | annotate_catchpoint (bs->breakpoint_at->number); |
a3f17187 AC |
2214 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
2215 | bs->breakpoint_at->number, | |
2216 | bs->breakpoint_at->triggered_dll_pathname); | |
e514a9d6 JM |
2217 | return PRINT_SRC_AND_LOC; |
2218 | break; | |
2219 | ||
2220 | case bp_catch_unload: | |
2221 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 AC |
2222 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
2223 | bs->breakpoint_at->number, | |
2224 | bs->breakpoint_at->triggered_dll_pathname); | |
e514a9d6 JM |
2225 | return PRINT_SRC_AND_LOC; |
2226 | break; | |
2227 | ||
2228 | case bp_catch_fork: | |
2229 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 AC |
2230 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), |
2231 | bs->breakpoint_at->number, | |
53a5351d | 2232 | bs->breakpoint_at->forked_inferior_pid); |
917317f4 | 2233 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2234 | break; |
2235 | ||
2236 | case bp_catch_vfork: | |
2237 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 AC |
2238 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), |
2239 | bs->breakpoint_at->number, | |
e514a9d6 JM |
2240 | bs->breakpoint_at->forked_inferior_pid); |
2241 | return PRINT_SRC_AND_LOC; | |
2242 | break; | |
2243 | ||
2244 | case bp_catch_exec: | |
c906108c | 2245 | annotate_catchpoint (bs->breakpoint_at->number); |
a3f17187 | 2246 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), |
c5aa993b JM |
2247 | bs->breakpoint_at->number, |
2248 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2249 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2250 | break; |
2251 | ||
2252 | case bp_catch_catch: | |
53a5351d JM |
2253 | if (current_exception_event && |
2254 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2255 | { |
2256 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 | 2257 | printf_filtered (_("\nCatchpoint %d (exception caught), "), |
53a5351d | 2258 | bs->breakpoint_at->number); |
c5aa993b | 2259 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) |
a3f17187 | 2260 | printf_filtered (_("throw location %s:%d, "), |
c5aa993b JM |
2261 | CURRENT_EXCEPTION_THROW_FILE, |
2262 | CURRENT_EXCEPTION_THROW_LINE); | |
2263 | else | |
a3f17187 | 2264 | printf_filtered (_("throw location unknown, ")); |
c5aa993b | 2265 | |
c5aa993b | 2266 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) |
a3f17187 | 2267 | printf_filtered (_("catch location %s:%d\n"), |
c5aa993b JM |
2268 | CURRENT_EXCEPTION_CATCH_FILE, |
2269 | CURRENT_EXCEPTION_CATCH_LINE); | |
2270 | else | |
a3f17187 | 2271 | printf_filtered (_("catch location unknown\n")); |
c5aa993b | 2272 | |
e514a9d6 JM |
2273 | /* don't bother to print location frame info */ |
2274 | return PRINT_SRC_ONLY; | |
c5aa993b | 2275 | } |
c906108c | 2276 | else |
c5aa993b | 2277 | { |
e514a9d6 JM |
2278 | /* really throw, some other bpstat will handle it */ |
2279 | return PRINT_UNKNOWN; | |
c5aa993b | 2280 | } |
e514a9d6 JM |
2281 | break; |
2282 | ||
2283 | case bp_catch_throw: | |
53a5351d JM |
2284 | if (current_exception_event && |
2285 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2286 | { |
2287 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 | 2288 | printf_filtered (_("\nCatchpoint %d (exception thrown), "), |
53a5351d | 2289 | bs->breakpoint_at->number); |
c5aa993b | 2290 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) |
a3f17187 | 2291 | printf_filtered (_("throw location %s:%d, "), |
c5aa993b JM |
2292 | CURRENT_EXCEPTION_THROW_FILE, |
2293 | CURRENT_EXCEPTION_THROW_LINE); | |
2294 | else | |
a3f17187 | 2295 | printf_filtered (_("throw location unknown, ")); |
c5aa993b | 2296 | |
c5aa993b | 2297 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) |
a3f17187 | 2298 | printf_filtered (_("catch location %s:%d\n"), |
c5aa993b JM |
2299 | CURRENT_EXCEPTION_CATCH_FILE, |
2300 | CURRENT_EXCEPTION_CATCH_LINE); | |
2301 | else | |
a3f17187 | 2302 | printf_filtered (_("catch location unknown\n")); |
c5aa993b | 2303 | |
e514a9d6 JM |
2304 | /* don't bother to print location frame info */ |
2305 | return PRINT_SRC_ONLY; | |
c5aa993b | 2306 | } |
c906108c | 2307 | else |
c5aa993b | 2308 | { |
e514a9d6 JM |
2309 | /* really catch, some other bpstat will handle it */ |
2310 | return PRINT_UNKNOWN; | |
c5aa993b | 2311 | } |
e514a9d6 | 2312 | break; |
c906108c | 2313 | |
e514a9d6 JM |
2314 | case bp_watchpoint: |
2315 | case bp_hardware_watchpoint: | |
2316 | if (bs->old_val != NULL) | |
2317 | { | |
2318 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2319 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2320 | ui_out_field_string |
2321 | (uiout, "reason", | |
2322 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
8b93c638 | 2323 | mention (bs->breakpoint_at); |
3b31d625 | 2324 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2325 | ui_out_text (uiout, "\nOld value = "); |
2326 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2327 | ui_out_field_stream (uiout, "old", stb); | |
2328 | ui_out_text (uiout, "\nNew value = "); | |
2329 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2330 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2331 | do_cleanups (ui_out_chain); |
8b93c638 | 2332 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2333 | value_free (bs->old_val); |
2334 | bs->old_val = NULL; | |
2335 | } | |
2336 | /* More than one watchpoint may have been triggered. */ | |
2337 | return PRINT_UNKNOWN; | |
2338 | break; | |
2339 | ||
2340 | case bp_read_watchpoint: | |
9dc5e2a9 | 2341 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2342 | ui_out_field_string |
2343 | (uiout, "reason", | |
2344 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
8b93c638 | 2345 | mention (bs->breakpoint_at); |
3b31d625 | 2346 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2347 | ui_out_text (uiout, "\nValue = "); |
2348 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2349 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2350 | do_cleanups (ui_out_chain); |
8b93c638 | 2351 | ui_out_text (uiout, "\n"); |
917317f4 | 2352 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2353 | break; |
2354 | ||
2355 | case bp_access_watchpoint: | |
8b93c638 JM |
2356 | if (bs->old_val != NULL) |
2357 | { | |
2358 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2359 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2360 | ui_out_field_string |
2361 | (uiout, "reason", | |
2362 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8b93c638 | 2363 | mention (bs->breakpoint_at); |
3b31d625 | 2364 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2365 | ui_out_text (uiout, "\nOld value = "); |
2366 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2367 | ui_out_field_stream (uiout, "old", stb); | |
2368 | value_free (bs->old_val); | |
2369 | bs->old_val = NULL; | |
2370 | ui_out_text (uiout, "\nNew value = "); | |
2371 | } | |
2372 | else | |
2373 | { | |
2374 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2375 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2376 | ui_out_field_string |
2377 | (uiout, "reason", | |
2378 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2379 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2380 | ui_out_text (uiout, "\nValue = "); |
2381 | } | |
2382 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2383 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2384 | do_cleanups (ui_out_chain); |
8b93c638 | 2385 | ui_out_text (uiout, "\n"); |
917317f4 | 2386 | return PRINT_UNKNOWN; |
e514a9d6 | 2387 | break; |
4ce44c66 | 2388 | |
e514a9d6 JM |
2389 | /* Fall through, we don't deal with these types of breakpoints |
2390 | here. */ | |
2391 | ||
11cf8741 | 2392 | case bp_finish: |
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_FUNCTION_FINISHED)); | |
8b93c638 JM |
2397 | return PRINT_UNKNOWN; |
2398 | break; | |
2399 | ||
e514a9d6 | 2400 | case bp_until: |
9dc5e2a9 | 2401 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2402 | ui_out_field_string |
2403 | (uiout, "reason", | |
2404 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2405 | return PRINT_UNKNOWN; |
2406 | break; | |
2407 | ||
c2d11a7d | 2408 | case bp_none: |
e514a9d6 JM |
2409 | case bp_longjmp: |
2410 | case bp_longjmp_resume: | |
2411 | case bp_step_resume: | |
2412 | case bp_through_sigtramp: | |
2413 | case bp_watchpoint_scope: | |
2414 | case bp_call_dummy: | |
2415 | default: | |
2416 | return PRINT_UNKNOWN; | |
2417 | } | |
2418 | } | |
2419 | ||
2420 | /* Generic routine for printing messages indicating why we | |
2421 | stopped. The behavior of this function depends on the value | |
2422 | 'print_it' in the bpstat structure. Under some circumstances we | |
2423 | may decide not to print anything here and delegate the task to | |
2424 | normal_stop(). */ | |
2425 | ||
2426 | static enum print_stop_action | |
2427 | print_bp_stop_message (bpstat bs) | |
2428 | { | |
2429 | switch (bs->print_it) | |
2430 | { | |
2431 | case print_it_noop: | |
2432 | /* Nothing should be printed for this bpstat entry. */ | |
2433 | return PRINT_UNKNOWN; | |
2434 | break; | |
2435 | ||
2436 | case print_it_done: | |
2437 | /* We still want to print the frame, but we already printed the | |
2438 | relevant messages. */ | |
2439 | return PRINT_SRC_AND_LOC; | |
2440 | break; | |
2441 | ||
2442 | case print_it_normal: | |
3086aeae DJ |
2443 | /* Normal case. Call the breakpoint's print_it method, or |
2444 | print_it_typical. */ | |
2445 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2446 | && bs->breakpoint_at->ops->print_it != NULL) | |
2447 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2448 | else | |
2449 | return print_it_typical (bs); | |
e514a9d6 | 2450 | break; |
3086aeae | 2451 | |
e514a9d6 | 2452 | default: |
8e65ff28 | 2453 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2454 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2455 | break; |
c906108c | 2456 | } |
c906108c SS |
2457 | } |
2458 | ||
e514a9d6 JM |
2459 | /* Print a message indicating what happened. This is called from |
2460 | normal_stop(). The input to this routine is the head of the bpstat | |
2461 | list - a list of the eventpoints that caused this stop. This | |
2462 | routine calls the generic print routine for printing a message | |
2463 | about reasons for stopping. This will print (for example) the | |
2464 | "Breakpoint n," part of the output. The return value of this | |
2465 | routine is one of: | |
c906108c | 2466 | |
917317f4 JM |
2467 | PRINT_UNKNOWN: Means we printed nothing |
2468 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2469 | code to print the location. An example is |
2470 | "Breakpoint 1, " which should be followed by | |
2471 | the location. | |
917317f4 | 2472 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2473 | to also print the location part of the message. |
2474 | An example is the catch/throw messages, which | |
917317f4 JM |
2475 | don't require a location appended to the end. |
2476 | PRINT_NOTHING: We have done some printing and we don't need any | |
2477 | further info to be printed.*/ | |
c906108c | 2478 | |
917317f4 | 2479 | enum print_stop_action |
fba45db2 | 2480 | bpstat_print (bpstat bs) |
c906108c SS |
2481 | { |
2482 | int val; | |
c5aa993b | 2483 | |
c906108c | 2484 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2485 | (Currently all watchpoints go on the bpstat whether hit or not. |
2486 | That probably could (should) be changed, provided care is taken | |
c906108c | 2487 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2488 | for (; bs; bs = bs->next) |
2489 | { | |
2490 | val = print_bp_stop_message (bs); | |
2491 | if (val == PRINT_SRC_ONLY | |
2492 | || val == PRINT_SRC_AND_LOC | |
2493 | || val == PRINT_NOTHING) | |
2494 | return val; | |
2495 | } | |
c906108c | 2496 | |
e514a9d6 JM |
2497 | /* We reached the end of the chain, or we got a null BS to start |
2498 | with and nothing was printed. */ | |
917317f4 | 2499 | return PRINT_UNKNOWN; |
c906108c SS |
2500 | } |
2501 | ||
2502 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2503 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2504 | The argument is a "struct expression *" that has been cast to char * to | |
2505 | make it pass through catch_errors. */ | |
2506 | ||
2507 | static int | |
4efb68b1 | 2508 | breakpoint_cond_eval (void *exp) |
c906108c | 2509 | { |
278cd55f | 2510 | struct value *mark = value_mark (); |
c5aa993b | 2511 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2512 | value_free_to_mark (mark); |
2513 | return i; | |
2514 | } | |
2515 | ||
2516 | /* Allocate a new bpstat and chain it to the current one. */ | |
2517 | ||
2518 | static bpstat | |
831662b3 | 2519 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2520 | { |
2521 | bpstat bs; | |
2522 | ||
2523 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2524 | cbs->next = bs; | |
2525 | bs->breakpoint_at = b; | |
2526 | /* If the condition is false, etc., don't do the commands. */ | |
2527 | bs->commands = NULL; | |
2528 | bs->old_val = NULL; | |
2529 | bs->print_it = print_it_normal; | |
2530 | return bs; | |
2531 | } | |
2532 | \f | |
2533 | /* Possible return values for watchpoint_check (this can't be an enum | |
2534 | because of check_errors). */ | |
2535 | /* The watchpoint has been deleted. */ | |
2536 | #define WP_DELETED 1 | |
2537 | /* The value has changed. */ | |
2538 | #define WP_VALUE_CHANGED 2 | |
2539 | /* The value has not changed. */ | |
2540 | #define WP_VALUE_NOT_CHANGED 3 | |
2541 | ||
2542 | #define BP_TEMPFLAG 1 | |
2543 | #define BP_HARDWAREFLAG 2 | |
2544 | ||
2545 | /* Check watchpoint condition. */ | |
2546 | ||
2547 | static int | |
4efb68b1 | 2548 | watchpoint_check (void *p) |
c906108c SS |
2549 | { |
2550 | bpstat bs = (bpstat) p; | |
2551 | struct breakpoint *b; | |
2552 | struct frame_info *fr; | |
2553 | int within_current_scope; | |
2554 | ||
2555 | b = bs->breakpoint_at; | |
2556 | ||
2557 | if (b->exp_valid_block == NULL) | |
2558 | within_current_scope = 1; | |
2559 | else | |
2560 | { | |
2561 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2562 | any chance of handling watchpoints on local variables, we'll need |
2563 | the frame chain (so we can determine if we're in scope). */ | |
2564 | reinit_frame_cache (); | |
101dcfbe | 2565 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2566 | within_current_scope = (fr != NULL); |
c12260ac CV |
2567 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2568 | in the function but the stack frame has already been invalidated. | |
2569 | Since we can't rely on the values of local variables after the | |
2570 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2571 | state as `not changed' without further checking. |
2572 | ||
2573 | vinschen/2003-09-04: The former implementation left out the case | |
2574 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2575 | because the current PC is currently in an epilogue. Calling | |
2576 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2577 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2578 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2579 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2580 | if (fr && within_current_scope) |
c906108c SS |
2581 | /* If we end up stopping, the current frame will get selected |
2582 | in normal_stop. So this call to select_frame won't affect | |
2583 | the user. */ | |
0f7d239c | 2584 | select_frame (fr); |
c906108c | 2585 | } |
c5aa993b | 2586 | |
c906108c SS |
2587 | if (within_current_scope) |
2588 | { | |
2589 | /* We use value_{,free_to_}mark because it could be a | |
2590 | *long* time before we return to the command level and | |
c5aa993b JM |
2591 | call free_all_values. We can't call free_all_values because |
2592 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2593 | |
278cd55f AC |
2594 | struct value *mark = value_mark (); |
2595 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2596 | if (!value_equal (b->val, new_val)) |
2597 | { | |
2598 | release_value (new_val); | |
2599 | value_free_to_mark (mark); | |
2600 | bs->old_val = b->val; | |
2601 | b->val = new_val; | |
2602 | /* We will stop here */ | |
2603 | return WP_VALUE_CHANGED; | |
2604 | } | |
2605 | else | |
2606 | { | |
2607 | /* Nothing changed, don't do anything. */ | |
2608 | value_free_to_mark (mark); | |
2609 | /* We won't stop here */ | |
2610 | return WP_VALUE_NOT_CHANGED; | |
2611 | } | |
2612 | } | |
2613 | else | |
2614 | { | |
2615 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2616 | if we temporarily ignored the watchpoint, then when |
2617 | we reenter the block in which it is valid it contains | |
2618 | garbage (in the case of a function, it may have two | |
2619 | garbage values, one before and one after the prologue). | |
2620 | So we can't even detect the first assignment to it and | |
2621 | watch after that (since the garbage may or may not equal | |
2622 | the first value assigned). */ | |
4ce44c66 JM |
2623 | /* We print all the stop information in print_it_typical(), but |
2624 | in this case, by the time we call print_it_typical() this bp | |
2625 | will be deleted already. So we have no choice but print the | |
2626 | information here. */ | |
9dc5e2a9 | 2627 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2628 | ui_out_field_string |
2629 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 JM |
2630 | ui_out_text (uiout, "\nWatchpoint "); |
2631 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2632 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2633 | which its expression is valid.\n"); | |
4ce44c66 | 2634 | |
c906108c | 2635 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2636 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2637 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2638 | |
2639 | return WP_DELETED; | |
2640 | } | |
2641 | } | |
2642 | ||
9709f61c | 2643 | /* Get a bpstat associated with having just stopped at address |
46587c42 JJ |
2644 | BP_ADDR in thread PTID. STOPPED_BY_WATCHPOINT is 1 if the |
2645 | target thinks we stopped due to a hardware watchpoint, 0 if we | |
2646 | know we did not trigger a hardware watchpoint, and -1 if we do not know. */ | |
c906108c SS |
2647 | |
2648 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2649 | don't understand this stop. Result is a chain of bpstat's such that: | |
2650 | ||
c5aa993b | 2651 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2652 | |
c5aa993b | 2653 | if we understand why we stopped, the result is not null. |
c906108c | 2654 | |
c5aa993b JM |
2655 | Each element of the chain refers to a particular breakpoint or |
2656 | watchpoint at which we have stopped. (We may have stopped for | |
2657 | several reasons concurrently.) | |
c906108c | 2658 | |
c5aa993b JM |
2659 | Each element of the chain has valid next, breakpoint_at, |
2660 | commands, FIXME??? fields. */ | |
c906108c SS |
2661 | |
2662 | bpstat | |
00d4360e | 2663 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid, int stopped_by_watchpoint) |
c906108c | 2664 | { |
52f0bd74 | 2665 | struct breakpoint *b, *temp; |
c906108c SS |
2666 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
2667 | int real_breakpoint = 0; | |
2668 | /* Root of the chain of bpstat's */ | |
2669 | struct bpstats root_bs[1]; | |
2670 | /* Pointer to the last thing in the chain currently. */ | |
2671 | bpstat bs = root_bs; | |
fa5281d0 | 2672 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2673 | |
c906108c | 2674 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2675 | { |
468d015d | 2676 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2677 | continue; |
2678 | ||
2679 | if (b->type != bp_watchpoint | |
46587c42 JJ |
2680 | && b->type != bp_hardware_watchpoint |
2681 | && b->type != bp_read_watchpoint | |
2682 | && b->type != bp_access_watchpoint | |
c5aa993b JM |
2683 | && b->type != bp_hardware_breakpoint |
2684 | && b->type != bp_catch_fork | |
2685 | && b->type != bp_catch_vfork | |
2686 | && b->type != bp_catch_exec | |
2687 | && b->type != bp_catch_catch | |
2688 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2689 | { |
5cab636d | 2690 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2691 | continue; |
2692 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2693 | && section_is_overlay (b->loc->section) |
2694 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2695 | continue; |
2696 | } | |
c906108c | 2697 | |
46587c42 JJ |
2698 | /* Continuable hardware watchpoints are treated as non-existent if the |
2699 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2700 | some data address). Otherwise gdb won't stop on a break instruction | |
2701 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2702 | been defined. */ | |
2703 | ||
2704 | if ((b->type == bp_hardware_watchpoint | |
2705 | || b->type == bp_read_watchpoint | |
2706 | || b->type == bp_access_watchpoint) | |
2707 | && !stopped_by_watchpoint) | |
2708 | continue; | |
2709 | ||
c02f5703 MS |
2710 | if (b->type == bp_hardware_breakpoint) |
2711 | { | |
9709f61c | 2712 | if (b->loc->address != bp_addr) |
c02f5703 MS |
2713 | continue; |
2714 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2715 | && section_is_overlay (b->loc->section) |
2716 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2717 | continue; |
2718 | } | |
c5aa993b | 2719 | |
c5aa993b JM |
2720 | /* Is this a catchpoint of a load or unload? If so, did we |
2721 | get a load or unload of the specified library? If not, | |
2722 | ignore it. */ | |
2723 | if ((b->type == bp_catch_load) | |
c906108c | 2724 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2725 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2726 | || ((b->dll_pathname != NULL) |
53a5351d | 2727 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2728 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2729 | PIDGET (inferior_ptid))) | |
53a5351d | 2730 | != 0))) |
c906108c | 2731 | #endif |
c5aa993b JM |
2732 | ) |
2733 | continue; | |
2734 | ||
2735 | if ((b->type == bp_catch_unload) | |
c906108c | 2736 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2737 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2738 | || ((b->dll_pathname != NULL) |
53a5351d | 2739 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2740 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2741 | PIDGET (inferior_ptid))) | |
53a5351d | 2742 | != 0))) |
c906108c | 2743 | #endif |
c5aa993b JM |
2744 | ) |
2745 | continue; | |
c906108c | 2746 | |
c5aa993b | 2747 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2748 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2749 | &b->forked_inferior_pid)) | |
c5aa993b | 2750 | continue; |
c906108c | 2751 | |
c5aa993b | 2752 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2753 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2754 | &b->forked_inferior_pid)) | |
c5aa993b | 2755 | continue; |
c906108c | 2756 | |
c5aa993b | 2757 | if ((b->type == bp_catch_exec) |
47932f85 | 2758 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2759 | continue; |
c906108c | 2760 | |
c5aa993b JM |
2761 | if (ep_is_exception_catchpoint (b) && |
2762 | !(current_exception_event = target_get_current_exception_event ())) | |
2763 | continue; | |
c906108c | 2764 | |
c5aa993b JM |
2765 | /* Come here if it's a watchpoint, or if the break address matches */ |
2766 | ||
2767 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2768 | ||
2769 | /* Watchpoints may change this, if not found to have triggered. */ | |
2770 | bs->stop = 1; | |
2771 | bs->print = 1; | |
2772 | ||
53a5351d JM |
2773 | if (b->type == bp_watchpoint || |
2774 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2775 | { |
9ebf4acf AC |
2776 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2777 | b->number); | |
2778 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2779 | int e = catch_errors (watchpoint_check, bs, message, | |
2780 | RETURN_MASK_ALL); | |
2781 | do_cleanups (cleanups); | |
2782 | switch (e) | |
c5aa993b JM |
2783 | { |
2784 | case WP_DELETED: | |
2785 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2786 | /* Actually this is superfluous, because by the time we |
2787 | call print_it_typical() the wp will be already deleted, | |
2788 | and the function will return immediately. */ | |
c5aa993b JM |
2789 | bs->print_it = print_it_done; |
2790 | /* Stop. */ | |
2791 | break; | |
2792 | case WP_VALUE_CHANGED: | |
2793 | /* Stop. */ | |
2794 | ++(b->hit_count); | |
2795 | break; | |
2796 | case WP_VALUE_NOT_CHANGED: | |
2797 | /* Don't stop. */ | |
2798 | bs->print_it = print_it_noop; | |
2799 | bs->stop = 0; | |
c5aa993b JM |
2800 | continue; |
2801 | default: | |
2802 | /* Can't happen. */ | |
2803 | /* FALLTHROUGH */ | |
2804 | case 0: | |
2805 | /* Error from catch_errors. */ | |
a3f17187 | 2806 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); |
c5aa993b | 2807 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2808 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2809 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2810 | /* We've already printed what needs to be printed. */ |
2811 | bs->print_it = print_it_done; | |
2812 | ||
2813 | /* Stop. */ | |
2814 | break; | |
2815 | } | |
2816 | } | |
53a5351d JM |
2817 | else if (b->type == bp_read_watchpoint || |
2818 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2819 | { |
2820 | CORE_ADDR addr; | |
278cd55f | 2821 | struct value *v; |
c5aa993b JM |
2822 | int found = 0; |
2823 | ||
4aa7a7f5 | 2824 | if (!target_stopped_data_address (¤t_target, &addr)) |
c5aa993b | 2825 | continue; |
17cf0ecd | 2826 | for (v = b->val_chain; v; v = value_next (v)) |
c5aa993b | 2827 | { |
5c44784c | 2828 | if (VALUE_LVAL (v) == lval_memory |
d69fe07e | 2829 | && ! value_lazy (v)) |
c5aa993b | 2830 | { |
df407dfe | 2831 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
2832 | |
2833 | if (v == b->val_chain | |
2834 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2835 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2836 | { | |
2837 | CORE_ADDR vaddr; | |
2838 | ||
df407dfe | 2839 | vaddr = VALUE_ADDRESS (v) + value_offset (v); |
2e70b7b9 MS |
2840 | /* Exact match not required. Within range is |
2841 | sufficient. */ | |
2842 | if (addr >= vaddr && | |
df407dfe | 2843 | addr < vaddr + TYPE_LENGTH (value_type (v))) |
2e70b7b9 MS |
2844 | found = 1; |
2845 | } | |
c5aa993b JM |
2846 | } |
2847 | } | |
2848 | if (found) | |
9ebf4acf AC |
2849 | { |
2850 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2851 | b->number); | |
2852 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2853 | int e = catch_errors (watchpoint_check, bs, message, | |
2854 | RETURN_MASK_ALL); | |
2855 | do_cleanups (cleanups); | |
2856 | switch (e) | |
2857 | { | |
2858 | case WP_DELETED: | |
2859 | /* We've already printed what needs to be printed. */ | |
2860 | bs->print_it = print_it_done; | |
2861 | /* Stop. */ | |
2862 | break; | |
2863 | case WP_VALUE_CHANGED: | |
2864 | if (b->type == bp_read_watchpoint) | |
2865 | { | |
2866 | /* Don't stop: read watchpoints shouldn't fire if | |
2867 | the value has changed. This is for targets | |
2868 | which cannot set read-only watchpoints. */ | |
2869 | bs->print_it = print_it_noop; | |
2870 | bs->stop = 0; | |
2871 | continue; | |
2872 | } | |
2873 | ++(b->hit_count); | |
2874 | break; | |
2875 | case WP_VALUE_NOT_CHANGED: | |
2876 | /* Stop. */ | |
2877 | ++(b->hit_count); | |
2878 | break; | |
2879 | default: | |
2880 | /* Can't happen. */ | |
2881 | case 0: | |
2882 | /* Error from catch_errors. */ | |
a3f17187 | 2883 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); |
9ebf4acf AC |
2884 | if (b->related_breakpoint) |
2885 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2886 | b->disposition = disp_del_at_next_stop; | |
2887 | /* We've already printed what needs to be printed. */ | |
2888 | bs->print_it = print_it_done; | |
2889 | break; | |
2890 | } | |
2891 | } | |
53a5351d JM |
2892 | else /* found == 0 */ |
2893 | { | |
2894 | /* This is a case where some watchpoint(s) triggered, | |
2895 | but not at the address of this watchpoint (FOUND | |
2896 | was left zero). So don't print anything for this | |
2897 | watchpoint. */ | |
2898 | bs->print_it = print_it_noop; | |
2899 | bs->stop = 0; | |
2900 | continue; | |
2901 | } | |
c5aa993b JM |
2902 | } |
2903 | else | |
2904 | { | |
2905 | /* By definition, an encountered breakpoint is a triggered | |
2906 | breakpoint. */ | |
2907 | ++(b->hit_count); | |
c906108c | 2908 | |
c5aa993b JM |
2909 | real_breakpoint = 1; |
2910 | } | |
2911 | ||
818dd999 AC |
2912 | if (frame_id_p (b->frame_id) |
2913 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2914 | bs->stop = 0; |
2915 | else | |
2916 | { | |
2917 | int value_is_zero = 0; | |
2918 | ||
2919 | if (b->cond) | |
2920 | { | |
2921 | /* Need to select the frame, with all that implies | |
2922 | so that the conditions will have the right context. */ | |
0f7d239c | 2923 | select_frame (get_current_frame ()); |
c5aa993b JM |
2924 | value_is_zero |
2925 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2926 | "Error in testing breakpoint condition:\n", | |
2927 | RETURN_MASK_ALL); | |
2928 | /* FIXME-someday, should give breakpoint # */ | |
2929 | free_all_values (); | |
2930 | } | |
2931 | if (b->cond && value_is_zero) | |
2932 | { | |
2933 | bs->stop = 0; | |
2934 | /* Don't consider this a hit. */ | |
2935 | --(b->hit_count); | |
2936 | } | |
fa5281d0 DJ |
2937 | else if (b->thread != -1 && b->thread != thread_id) |
2938 | { | |
2939 | bs->stop = 0; | |
2940 | /* Don't consider this a hit. */ | |
2941 | --(b->hit_count); | |
2942 | } | |
c5aa993b JM |
2943 | else if (b->ignore_count > 0) |
2944 | { | |
2945 | b->ignore_count--; | |
5c44784c | 2946 | annotate_ignore_count_change (); |
c5aa993b JM |
2947 | bs->stop = 0; |
2948 | } | |
2949 | else | |
2950 | { | |
2951 | /* We will stop here */ | |
b5de0fa7 EZ |
2952 | if (b->disposition == disp_disable) |
2953 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2954 | if (b->silent) |
2955 | bs->print = 0; | |
552f4abf | 2956 | bs->commands = b->commands; |
c5aa993b | 2957 | if (bs->commands && |
6314a349 AC |
2958 | (strcmp ("silent", bs->commands->line) == 0 |
2959 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
2960 | { |
2961 | bs->commands = bs->commands->next; | |
c906108c | 2962 | bs->print = 0; |
c5aa993b | 2963 | } |
552f4abf | 2964 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2965 | } |
2966 | } | |
2967 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2968 | if (bs->stop == 0 || bs->print == 0) | |
2969 | bs->print_it = print_it_noop; | |
2970 | } | |
c906108c SS |
2971 | |
2972 | bs->next = NULL; /* Terminate the chain */ | |
2973 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2974 | ||
c906108c SS |
2975 | /* The value of a hardware watchpoint hasn't changed, but the |
2976 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2977 | if (bs && !bs->stop && |
c906108c SS |
2978 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2979 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2980 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2981 | { | |
2982 | remove_breakpoints (); | |
2983 | insert_breakpoints (); | |
2984 | } | |
2985 | return bs; | |
2986 | } | |
2987 | \f | |
2988 | /* Tell what to do about this bpstat. */ | |
2989 | struct bpstat_what | |
fba45db2 | 2990 | bpstat_what (bpstat bs) |
c906108c SS |
2991 | { |
2992 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2993 | enum class |
2994 | { | |
2995 | /* This bpstat element has no effect on the main_action. */ | |
2996 | no_effect = 0, | |
2997 | ||
2998 | /* There was a watchpoint, stop but don't print. */ | |
2999 | wp_silent, | |
c906108c | 3000 | |
c5aa993b JM |
3001 | /* There was a watchpoint, stop and print. */ |
3002 | wp_noisy, | |
c906108c | 3003 | |
c5aa993b JM |
3004 | /* There was a breakpoint but we're not stopping. */ |
3005 | bp_nostop, | |
c906108c | 3006 | |
c5aa993b JM |
3007 | /* There was a breakpoint, stop but don't print. */ |
3008 | bp_silent, | |
c906108c | 3009 | |
c5aa993b JM |
3010 | /* There was a breakpoint, stop and print. */ |
3011 | bp_noisy, | |
c906108c | 3012 | |
c5aa993b JM |
3013 | /* We hit the longjmp breakpoint. */ |
3014 | long_jump, | |
c906108c | 3015 | |
c5aa993b JM |
3016 | /* We hit the longjmp_resume breakpoint. */ |
3017 | long_resume, | |
c906108c | 3018 | |
c5aa993b JM |
3019 | /* We hit the step_resume breakpoint. */ |
3020 | step_resume, | |
c906108c | 3021 | |
c5aa993b JM |
3022 | /* We hit the through_sigtramp breakpoint. */ |
3023 | through_sig, | |
c906108c | 3024 | |
c5aa993b JM |
3025 | /* We hit the shared library event breakpoint. */ |
3026 | shlib_event, | |
c906108c | 3027 | |
c5aa993b JM |
3028 | /* We caught a shared library event. */ |
3029 | catch_shlib_event, | |
c906108c | 3030 | |
c5aa993b JM |
3031 | /* This is just used to count how many enums there are. */ |
3032 | class_last | |
c906108c SS |
3033 | }; |
3034 | ||
3035 | /* Here is the table which drives this routine. So that we can | |
3036 | format it pretty, we define some abbreviations for the | |
3037 | enum bpstat_what codes. */ | |
3038 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3039 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3040 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3041 | #define sgl BPSTAT_WHAT_SINGLE | |
3042 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3043 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
3044 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
3045 | #define sr BPSTAT_WHAT_STEP_RESUME | |
3046 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
3047 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
3048 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3049 | ||
3050 | /* "Can't happen." Might want to print an error message. | |
3051 | abort() is not out of the question, but chances are GDB is just | |
3052 | a bit confused, not unusable. */ | |
3053 | #define err BPSTAT_WHAT_STOP_NOISY | |
3054 | ||
3055 | /* Given an old action and a class, come up with a new action. */ | |
3056 | /* One interesting property of this table is that wp_silent is the same | |
3057 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3058 | after stopping, the check for whether to step over a breakpoint | |
3059 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3060 | reference to how we stopped. We retain separate wp_silent and |
3061 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3062 | |
3063 | Another possibly interesting property of this table is that | |
3064 | there's a partial ordering, priority-like, of the actions. Once | |
3065 | you've decided that some action is appropriate, you'll never go | |
3066 | back and decide something of a lower priority is better. The | |
3067 | ordering is: | |
3068 | ||
7e73cedf | 3069 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
3070 | sgl < clrs shl shlr slr sn sr ss ts |
3071 | slr < err shl shlr sn sr ss ts | |
3072 | clr < clrs err shl shlr sn sr ss ts | |
3073 | clrs < err shl shlr sn sr ss ts | |
3074 | ss < shl shlr sn sr ts | |
3075 | sn < shl shlr sr ts | |
3076 | sr < shl shlr ts | |
3077 | shl < shlr | |
3078 | ts < | |
3079 | shlr < | |
3080 | ||
43ff13b4 JM |
3081 | What I think this means is that we don't need a damned table |
3082 | here. If you just put the rows and columns in the right order, | |
3083 | it'd look awfully regular. We could simply walk the bpstat list | |
3084 | and choose the highest priority action we find, with a little | |
3085 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
3086 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
3087 | is messy anyway). */ | |
c906108c SS |
3088 | |
3089 | /* step_resume entries: a step resume breakpoint overrides another | |
3090 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3091 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3092 | /* We handle the through_sigtramp_breakpoint the same way; having both |
3093 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
3094 | ||
3095 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3096 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3097 | { | |
3098 | /* old action */ | |
3099 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
3100 | */ | |
3101 | /*no_effect */ | |
3102 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
3103 | /*wp_silent */ | |
3104 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3105 | /*wp_noisy */ | |
3106 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3107 | /*bp_nostop */ | |
3108 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
3109 | /*bp_silent */ | |
3110 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3111 | /*bp_noisy */ | |
3112 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3113 | /*long_jump */ | |
a48bb0b3 | 3114 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
3115 | /*long_resume */ |
3116 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
3117 | /*step_resume */ | |
3118 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
3119 | /*through_sig */ | |
3120 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
3121 | /*shlib */ | |
3122 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
3123 | /*catch_shlib */ | |
3124 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
3125 | }; | |
c906108c SS |
3126 | |
3127 | #undef kc | |
3128 | #undef ss | |
3129 | #undef sn | |
3130 | #undef sgl | |
3131 | #undef slr | |
3132 | #undef clr | |
3133 | #undef clrs | |
3134 | #undef err | |
3135 | #undef sr | |
3136 | #undef ts | |
3137 | #undef shl | |
3138 | #undef shlr | |
3139 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3140 | struct bpstat_what retval; | |
3141 | ||
3142 | retval.call_dummy = 0; | |
3143 | for (; bs != NULL; bs = bs->next) | |
3144 | { | |
3145 | enum class bs_class = no_effect; | |
3146 | if (bs->breakpoint_at == NULL) | |
3147 | /* I suspect this can happen if it was a momentary breakpoint | |
3148 | which has since been deleted. */ | |
3149 | continue; | |
3150 | switch (bs->breakpoint_at->type) | |
3151 | { | |
3152 | case bp_none: | |
3153 | continue; | |
3154 | ||
3155 | case bp_breakpoint: | |
3156 | case bp_hardware_breakpoint: | |
3157 | case bp_until: | |
3158 | case bp_finish: | |
3159 | if (bs->stop) | |
3160 | { | |
3161 | if (bs->print) | |
3162 | bs_class = bp_noisy; | |
3163 | else | |
3164 | bs_class = bp_silent; | |
3165 | } | |
3166 | else | |
3167 | bs_class = bp_nostop; | |
3168 | break; | |
3169 | case bp_watchpoint: | |
3170 | case bp_hardware_watchpoint: | |
3171 | case bp_read_watchpoint: | |
3172 | case bp_access_watchpoint: | |
3173 | if (bs->stop) | |
3174 | { | |
3175 | if (bs->print) | |
3176 | bs_class = wp_noisy; | |
3177 | else | |
3178 | bs_class = wp_silent; | |
3179 | } | |
3180 | else | |
53a5351d JM |
3181 | /* There was a watchpoint, but we're not stopping. |
3182 | This requires no further action. */ | |
c906108c SS |
3183 | bs_class = no_effect; |
3184 | break; | |
3185 | case bp_longjmp: | |
3186 | bs_class = long_jump; | |
3187 | break; | |
3188 | case bp_longjmp_resume: | |
3189 | bs_class = long_resume; | |
3190 | break; | |
3191 | case bp_step_resume: | |
3192 | if (bs->stop) | |
3193 | { | |
3194 | bs_class = step_resume; | |
3195 | } | |
3196 | else | |
3197 | /* It is for the wrong frame. */ | |
3198 | bs_class = bp_nostop; | |
3199 | break; | |
3200 | case bp_through_sigtramp: | |
3201 | bs_class = through_sig; | |
3202 | break; | |
3203 | case bp_watchpoint_scope: | |
3204 | bs_class = bp_nostop; | |
3205 | break; | |
c5aa993b JM |
3206 | case bp_shlib_event: |
3207 | bs_class = shlib_event; | |
3208 | break; | |
c4093a6a | 3209 | case bp_thread_event: |
1900040c | 3210 | case bp_overlay_event: |
c4093a6a JM |
3211 | bs_class = bp_nostop; |
3212 | break; | |
c5aa993b JM |
3213 | case bp_catch_load: |
3214 | case bp_catch_unload: | |
3215 | /* Only if this catchpoint triggered should we cause the | |
3216 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3217 | catchpoint. */ | |
3218 | if (bs->stop) | |
3219 | bs_class = catch_shlib_event; | |
3220 | else | |
3221 | bs_class = no_effect; | |
3222 | break; | |
3223 | case bp_catch_fork: | |
3224 | case bp_catch_vfork: | |
3225 | case bp_catch_exec: | |
3226 | if (bs->stop) | |
3227 | { | |
3228 | if (bs->print) | |
3229 | bs_class = bp_noisy; | |
3230 | else | |
3231 | bs_class = bp_silent; | |
3232 | } | |
3233 | else | |
53a5351d JM |
3234 | /* There was a catchpoint, but we're not stopping. |
3235 | This requires no further action. */ | |
c5aa993b JM |
3236 | bs_class = no_effect; |
3237 | break; | |
3238 | case bp_catch_catch: | |
3239 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3240 | bs_class = bp_nostop; | |
3241 | else if (bs->stop) | |
3242 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3243 | break; | |
3244 | case bp_catch_throw: | |
3245 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3246 | bs_class = bp_nostop; | |
3247 | else if (bs->stop) | |
3248 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3249 | break; |
c906108c | 3250 | case bp_call_dummy: |
53a5351d JM |
3251 | /* Make sure the action is stop (silent or noisy), |
3252 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3253 | bs_class = bp_silent; |
3254 | retval.call_dummy = 1; | |
3255 | break; | |
3256 | } | |
c5aa993b | 3257 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3258 | } |
3259 | retval.main_action = current_action; | |
3260 | return retval; | |
3261 | } | |
3262 | ||
3263 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3264 | without hardware support). This isn't related to a specific bpstat, | |
3265 | just to things like whether watchpoints are set. */ | |
3266 | ||
c5aa993b | 3267 | int |
fba45db2 | 3268 | bpstat_should_step (void) |
c906108c SS |
3269 | { |
3270 | struct breakpoint *b; | |
3271 | ALL_BREAKPOINTS (b) | |
468d015d | 3272 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3273 | return 1; |
c906108c SS |
3274 | return 0; |
3275 | } | |
3276 | ||
3277 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3278 | int | |
fba45db2 | 3279 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3280 | { |
075f6582 DJ |
3281 | struct bp_location *bpt; |
3282 | ALL_BP_LOCATIONS (bpt) | |
468d015d | 3283 | if (breakpoint_enabled (bpt->owner) |
075f6582 DJ |
3284 | && bpt->inserted |
3285 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3286 | return 1; |
c906108c SS |
3287 | return 0; |
3288 | } | |
c906108c | 3289 | \f |
c5aa993b | 3290 | |
c906108c SS |
3291 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3292 | function returns another bpstat which contains only the catchpoints | |
3293 | on that first list, if any. */ | |
3294 | void | |
fba45db2 | 3295 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3296 | { |
3297 | struct bpstats root_bs[1]; | |
3298 | bpstat bs = root_bs; | |
3299 | struct breakpoint *ep; | |
3300 | char *dll_pathname; | |
3301 | ||
c906108c SS |
3302 | bpstat_clear (cp_list); |
3303 | root_bs->next = NULL; | |
c5aa993b JM |
3304 | |
3305 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3306 | { |
3307 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3308 | ep = ep_list->breakpoint_at; | |
3309 | if (ep == NULL) | |
c5aa993b JM |
3310 | break; |
3311 | if ((ep->type != bp_catch_load) && | |
3312 | (ep->type != bp_catch_unload) && | |
3313 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3314 | (ep->type != bp_catch_throw)) |
3315 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3316 | continue; |
3317 | ||
c906108c SS |
3318 | /* Yes; add it to the list. */ |
3319 | bs = bpstat_alloc (ep, bs); | |
3320 | *bs = *ep_list; | |
3321 | bs->next = NULL; | |
3322 | bs = root_bs->next; | |
c5aa993b | 3323 | |
c906108c SS |
3324 | #if defined(SOLIB_ADD) |
3325 | /* Also, for each triggered catchpoint, tag it with the name of | |
3326 | the library that caused this trigger. (We copy the name now, | |
3327 | because it's only guaranteed to be available NOW, when the | |
3328 | catchpoint triggers. Clients who may wish to know the name | |
3329 | later must get it from the catchpoint itself.) */ | |
3330 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3331 | xfree (ep->triggered_dll_pathname); |
c906108c | 3332 | if (ep->type == bp_catch_load) |
39f77062 KB |
3333 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3334 | PIDGET (inferior_ptid)); | |
c906108c | 3335 | else |
39f77062 KB |
3336 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3337 | PIDGET (inferior_ptid)); | |
c906108c SS |
3338 | #else |
3339 | dll_pathname = NULL; | |
3340 | #endif | |
3341 | if (dll_pathname) | |
3342 | { | |
53a5351d JM |
3343 | ep->triggered_dll_pathname = (char *) |
3344 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3345 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3346 | } | |
3347 | else | |
3348 | ep->triggered_dll_pathname = NULL; | |
3349 | } | |
c5aa993b | 3350 | |
c906108c SS |
3351 | *cp_list = bs; |
3352 | } | |
3353 | ||
c4093a6a | 3354 | /* Print B to gdb_stdout. */ |
c906108c | 3355 | static void |
c4093a6a JM |
3356 | print_one_breakpoint (struct breakpoint *b, |
3357 | CORE_ADDR *last_addr) | |
c906108c | 3358 | { |
52f0bd74 AC |
3359 | struct command_line *l; |
3360 | struct symbol *sym; | |
c4093a6a JM |
3361 | struct ep_type_description |
3362 | { | |
3363 | enum bptype type; | |
3364 | char *description; | |
3365 | }; | |
3366 | static struct ep_type_description bptypes[] = | |
c906108c | 3367 | { |
c5aa993b JM |
3368 | {bp_none, "?deleted?"}, |
3369 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3370 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3371 | {bp_until, "until"}, |
3372 | {bp_finish, "finish"}, | |
3373 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3374 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3375 | {bp_read_watchpoint, "read watchpoint"}, |
3376 | {bp_access_watchpoint, "acc watchpoint"}, | |
3377 | {bp_longjmp, "longjmp"}, | |
3378 | {bp_longjmp_resume, "longjmp resume"}, | |
3379 | {bp_step_resume, "step resume"}, | |
3380 | {bp_through_sigtramp, "sigtramp"}, | |
3381 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3382 | {bp_call_dummy, "call dummy"}, | |
3383 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3384 | {bp_thread_event, "thread events"}, |
1900040c | 3385 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3386 | {bp_catch_load, "catch load"}, |
3387 | {bp_catch_unload, "catch unload"}, | |
3388 | {bp_catch_fork, "catch fork"}, | |
3389 | {bp_catch_vfork, "catch vfork"}, | |
3390 | {bp_catch_exec, "catch exec"}, | |
3391 | {bp_catch_catch, "catch catch"}, | |
3392 | {bp_catch_throw, "catch throw"} | |
3393 | }; | |
c4093a6a | 3394 | |
c5aa993b JM |
3395 | static char *bpdisps[] = |
3396 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3397 | static char bpenables[] = "nynny"; |
c906108c | 3398 | char wrap_indent[80]; |
8b93c638 JM |
3399 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3400 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3401 | struct cleanup *bkpt_chain; |
c906108c | 3402 | |
c4093a6a | 3403 | annotate_record (); |
3b31d625 | 3404 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3405 | |
3406 | /* 1 */ | |
3407 | annotate_field (0); | |
8b93c638 | 3408 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3409 | |
3410 | /* 2 */ | |
3411 | annotate_field (1); | |
3412 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3413 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 | 3414 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3415 | _("bptypes table does not describe type #%d."), |
c4093a6a | 3416 | (int) b->type); |
8b93c638 | 3417 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3418 | |
3419 | /* 3 */ | |
3420 | annotate_field (2); | |
8b93c638 | 3421 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3422 | |
3423 | /* 4 */ | |
3424 | annotate_field (3); | |
b5de0fa7 | 3425 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3426 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3427 | |
3428 | /* 5 and 6 */ | |
3429 | strcpy (wrap_indent, " "); | |
3430 | if (addressprint) | |
75ac9d7b MS |
3431 | { |
3432 | if (TARGET_ADDR_BIT <= 32) | |
3433 | strcat (wrap_indent, " "); | |
3434 | else | |
3435 | strcat (wrap_indent, " "); | |
3436 | } | |
c906108c | 3437 | |
3086aeae DJ |
3438 | if (b->ops != NULL && b->ops->print_one != NULL) |
3439 | b->ops->print_one (b, last_addr); | |
3440 | else | |
3441 | switch (b->type) | |
3442 | { | |
3443 | case bp_none: | |
3444 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3445 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3446 | break; |
c906108c | 3447 | |
3086aeae DJ |
3448 | case bp_watchpoint: |
3449 | case bp_hardware_watchpoint: | |
3450 | case bp_read_watchpoint: | |
3451 | case bp_access_watchpoint: | |
3452 | /* Field 4, the address, is omitted (which makes the columns | |
3453 | not line up too nicely with the headers, but the effect | |
3454 | is relatively readable). */ | |
3455 | if (addressprint) | |
3456 | ui_out_field_skip (uiout, "addr"); | |
3457 | annotate_field (5); | |
3458 | print_expression (b->exp, stb->stream); | |
3459 | ui_out_field_stream (uiout, "what", stb); | |
3460 | break; | |
3461 | ||
3462 | case bp_catch_load: | |
3463 | case bp_catch_unload: | |
3464 | /* Field 4, the address, is omitted (which makes the columns | |
3465 | not line up too nicely with the headers, but the effect | |
3466 | is relatively readable). */ | |
3467 | if (addressprint) | |
3468 | ui_out_field_skip (uiout, "addr"); | |
3469 | annotate_field (5); | |
3470 | if (b->dll_pathname == NULL) | |
3471 | { | |
3472 | ui_out_field_string (uiout, "what", "<any library>"); | |
3473 | ui_out_spaces (uiout, 1); | |
3474 | } | |
3475 | else | |
3476 | { | |
3477 | ui_out_text (uiout, "library \""); | |
3478 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3479 | ui_out_text (uiout, "\" "); | |
3480 | } | |
3481 | break; | |
3482 | ||
3483 | case bp_catch_fork: | |
3484 | case bp_catch_vfork: | |
3485 | /* Field 4, the address, is omitted (which makes the columns | |
3486 | not line up too nicely with the headers, but the effect | |
3487 | is relatively readable). */ | |
3488 | if (addressprint) | |
3489 | ui_out_field_skip (uiout, "addr"); | |
3490 | annotate_field (5); | |
3491 | if (b->forked_inferior_pid != 0) | |
3492 | { | |
3493 | ui_out_text (uiout, "process "); | |
3494 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3495 | ui_out_spaces (uiout, 1); | |
3496 | } | |
0f699bbe | 3497 | break; |
3086aeae DJ |
3498 | |
3499 | case bp_catch_exec: | |
3500 | /* Field 4, the address, is omitted (which makes the columns | |
3501 | not line up too nicely with the headers, but the effect | |
3502 | is relatively readable). */ | |
3503 | if (addressprint) | |
3504 | ui_out_field_skip (uiout, "addr"); | |
3505 | annotate_field (5); | |
3506 | if (b->exec_pathname != NULL) | |
3507 | { | |
3508 | ui_out_text (uiout, "program \""); | |
3509 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3510 | ui_out_text (uiout, "\" "); | |
3511 | } | |
3512 | break; | |
3513 | ||
3514 | case bp_catch_catch: | |
3515 | /* Field 4, the address, is omitted (which makes the columns | |
3516 | not line up too nicely with the headers, but the effect | |
3517 | is relatively readable). */ | |
3518 | if (addressprint) | |
3519 | ui_out_field_skip (uiout, "addr"); | |
3520 | annotate_field (5); | |
3521 | ui_out_field_string (uiout, "what", "exception catch"); | |
3522 | ui_out_spaces (uiout, 1); | |
3523 | break; | |
3524 | ||
3525 | case bp_catch_throw: | |
3526 | /* Field 4, the address, is omitted (which makes the columns | |
3527 | not line up too nicely with the headers, but the effect | |
3528 | is relatively readable). */ | |
3529 | if (addressprint) | |
3530 | ui_out_field_skip (uiout, "addr"); | |
3531 | annotate_field (5); | |
3532 | ui_out_field_string (uiout, "what", "exception throw"); | |
3533 | ui_out_spaces (uiout, 1); | |
3534 | break; | |
3535 | ||
3536 | case bp_breakpoint: | |
3537 | case bp_hardware_breakpoint: | |
3538 | case bp_until: | |
3539 | case bp_finish: | |
3540 | case bp_longjmp: | |
3541 | case bp_longjmp_resume: | |
3542 | case bp_step_resume: | |
3543 | case bp_through_sigtramp: | |
3544 | case bp_watchpoint_scope: | |
3545 | case bp_call_dummy: | |
3546 | case bp_shlib_event: | |
3547 | case bp_thread_event: | |
3548 | case bp_overlay_event: | |
3549 | if (addressprint) | |
3550 | { | |
3551 | annotate_field (4); | |
0101ce28 | 3552 | if (b->pending) |
d5479188 | 3553 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 JJ |
3554 | else |
3555 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
3556 | } |
3557 | annotate_field (5); | |
5cab636d | 3558 | *last_addr = b->loc->address; |
3086aeae DJ |
3559 | if (b->source_file) |
3560 | { | |
cf3a9e5b | 3561 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3562 | if (sym) |
3563 | { | |
3564 | ui_out_text (uiout, "in "); | |
3565 | ui_out_field_string (uiout, "func", | |
3566 | SYMBOL_PRINT_NAME (sym)); | |
3567 | ui_out_wrap_hint (uiout, wrap_indent); | |
3568 | ui_out_text (uiout, " at "); | |
3569 | } | |
3570 | ui_out_field_string (uiout, "file", b->source_file); | |
3571 | ui_out_text (uiout, ":"); | |
38fcd64c DJ |
3572 | |
3573 | if (ui_out_is_mi_like_p (uiout)) | |
3574 | { | |
3575 | struct symtab_and_line sal = find_pc_line (b->loc->address, 0); | |
3576 | char *fullname = symtab_to_fullname (sal.symtab); | |
3577 | ||
3578 | if (fullname) | |
3579 | ui_out_field_string (uiout, "fullname", fullname); | |
3580 | } | |
3581 | ||
3086aeae DJ |
3582 | ui_out_field_int (uiout, "line", b->line_number); |
3583 | } | |
0101ce28 JJ |
3584 | else if (b->pending) |
3585 | { | |
3586 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3587 | } | |
3086aeae DJ |
3588 | else |
3589 | { | |
5cab636d | 3590 | print_address_symbolic (b->loc->address, stb->stream, demangle, ""); |
3086aeae DJ |
3591 | ui_out_field_stream (uiout, "at", stb); |
3592 | } | |
3593 | break; | |
3594 | } | |
c906108c | 3595 | |
c4093a6a JM |
3596 | if (b->thread != -1) |
3597 | { | |
8b93c638 JM |
3598 | /* FIXME: This seems to be redundant and lost here; see the |
3599 | "stop only in" line a little further down. */ | |
3600 | ui_out_text (uiout, " thread "); | |
3601 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3602 | } |
3603 | ||
8b93c638 | 3604 | ui_out_text (uiout, "\n"); |
c4093a6a | 3605 | |
818dd999 | 3606 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3607 | { |
3608 | annotate_field (6); | |
8b93c638 | 3609 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3610 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3611 | the frame ID. */ | |
d0a55772 | 3612 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3613 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3614 | } |
3615 | ||
3616 | if (b->cond) | |
3617 | { | |
3618 | annotate_field (7); | |
8b93c638 JM |
3619 | ui_out_text (uiout, "\tstop only if "); |
3620 | print_expression (b->cond, stb->stream); | |
3621 | ui_out_field_stream (uiout, "cond", stb); | |
3622 | ui_out_text (uiout, "\n"); | |
c4093a6a | 3623 | } |
0101ce28 JJ |
3624 | |
3625 | if (b->pending && b->cond_string) | |
3626 | { | |
3627 | annotate_field (7); | |
3628 | ui_out_text (uiout, "\tstop only if "); | |
3629 | ui_out_field_string (uiout, "cond", b->cond_string); | |
3630 | ui_out_text (uiout, "\n"); | |
3631 | } | |
3632 | ||
c4093a6a JM |
3633 | if (b->thread != -1) |
3634 | { | |
3635 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3636 | ui_out_text (uiout, "\tstop only in thread "); |
3637 | ui_out_field_int (uiout, "thread", b->thread); | |
3638 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3639 | } |
3640 | ||
3641 | if (show_breakpoint_hit_counts && b->hit_count) | |
3642 | { | |
3643 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3644 | if (ep_is_catchpoint (b)) |
3645 | ui_out_text (uiout, "\tcatchpoint"); | |
3646 | else | |
3647 | ui_out_text (uiout, "\tbreakpoint"); | |
3648 | ui_out_text (uiout, " already hit "); | |
3649 | ui_out_field_int (uiout, "times", b->hit_count); | |
3650 | if (b->hit_count == 1) | |
3651 | ui_out_text (uiout, " time\n"); | |
3652 | else | |
3653 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3654 | } |
3655 | ||
fb40c209 AC |
3656 | /* Output the count also if it is zero, but only if this is |
3657 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3658 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3659 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3660 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3661 | |
c4093a6a JM |
3662 | if (b->ignore_count) |
3663 | { | |
3664 | annotate_field (8); | |
8b93c638 JM |
3665 | ui_out_text (uiout, "\tignore next "); |
3666 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3667 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3668 | } |
3669 | ||
3670 | if ((l = b->commands)) | |
3671 | { | |
3b31d625 EZ |
3672 | struct cleanup *script_chain; |
3673 | ||
c4093a6a | 3674 | annotate_field (9); |
3b31d625 | 3675 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3676 | print_command_lines (uiout, l, 4); |
3b31d625 | 3677 | do_cleanups (script_chain); |
c4093a6a | 3678 | } |
3b31d625 | 3679 | do_cleanups (bkpt_chain); |
8b93c638 | 3680 | do_cleanups (old_chain); |
c4093a6a | 3681 | } |
c5aa993b | 3682 | |
c4093a6a JM |
3683 | struct captured_breakpoint_query_args |
3684 | { | |
3685 | int bnum; | |
3686 | }; | |
c5aa993b | 3687 | |
c4093a6a | 3688 | static int |
2b65245e | 3689 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3690 | { |
3691 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3692 | struct breakpoint *b; |
c4093a6a JM |
3693 | CORE_ADDR dummy_addr = 0; |
3694 | ALL_BREAKPOINTS (b) | |
3695 | { | |
3696 | if (args->bnum == b->number) | |
c5aa993b | 3697 | { |
c4093a6a JM |
3698 | print_one_breakpoint (b, &dummy_addr); |
3699 | return GDB_RC_OK; | |
c5aa993b | 3700 | } |
c4093a6a JM |
3701 | } |
3702 | return GDB_RC_NONE; | |
3703 | } | |
c5aa993b | 3704 | |
c4093a6a | 3705 | enum gdb_rc |
ce43223b | 3706 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3707 | { |
3708 | struct captured_breakpoint_query_args args; | |
3709 | args.bnum = bnum; | |
3710 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3711 | an error. */ | |
ce43223b | 3712 | return catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
1c3c7ee7 | 3713 | error_message, RETURN_MASK_ALL); |
c4093a6a | 3714 | } |
c5aa993b | 3715 | |
7f3b0473 AC |
3716 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3717 | catchpoints, et.al.). */ | |
3718 | ||
3719 | static int | |
3720 | user_settable_breakpoint (const struct breakpoint *b) | |
3721 | { | |
3722 | return (b->type == bp_breakpoint | |
3723 | || b->type == bp_catch_load | |
3724 | || b->type == bp_catch_unload | |
3725 | || b->type == bp_catch_fork | |
3726 | || b->type == bp_catch_vfork | |
3727 | || b->type == bp_catch_exec | |
3728 | || b->type == bp_catch_catch | |
3729 | || b->type == bp_catch_throw | |
3730 | || b->type == bp_hardware_breakpoint | |
3731 | || b->type == bp_watchpoint | |
3732 | || b->type == bp_read_watchpoint | |
3733 | || b->type == bp_access_watchpoint | |
3734 | || b->type == bp_hardware_watchpoint); | |
3735 | } | |
3736 | ||
3737 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3738 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3739 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3740 | |
c4093a6a | 3741 | static void |
fba45db2 | 3742 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3743 | { |
52f0bd74 | 3744 | struct breakpoint *b; |
c4093a6a | 3745 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3746 | int nr_printable_breakpoints; |
3b31d625 | 3747 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3748 | |
7f3b0473 AC |
3749 | /* Compute the number of rows in the table. */ |
3750 | nr_printable_breakpoints = 0; | |
3751 | ALL_BREAKPOINTS (b) | |
3752 | if (bnum == -1 | |
3753 | || bnum == b->number) | |
3754 | { | |
3755 | if (allflag || user_settable_breakpoint (b)) | |
3756 | nr_printable_breakpoints++; | |
3757 | } | |
3758 | ||
8b93c638 | 3759 | if (addressprint) |
3b31d625 EZ |
3760 | bkpttbl_chain |
3761 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3762 | "BreakpointTable"); | |
8b93c638 | 3763 | else |
3b31d625 EZ |
3764 | bkpttbl_chain |
3765 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3766 | "BreakpointTable"); | |
8b93c638 | 3767 | |
7f3b0473 | 3768 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3769 | annotate_breakpoints_headers (); |
3770 | if (nr_printable_breakpoints > 0) | |
3771 | annotate_field (0); | |
3772 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3773 | if (nr_printable_breakpoints > 0) | |
3774 | annotate_field (1); | |
3775 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3776 | if (nr_printable_breakpoints > 0) | |
3777 | annotate_field (2); | |
3778 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3779 | if (nr_printable_breakpoints > 0) | |
3780 | annotate_field (3); | |
3781 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3782 | if (addressprint) | |
7f3b0473 | 3783 | { |
d7faa9e7 AC |
3784 | if (nr_printable_breakpoints > 0) |
3785 | annotate_field (4); | |
7f3b0473 | 3786 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3787 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3788 | else |
b25959ec | 3789 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3790 | } |
d7faa9e7 AC |
3791 | if (nr_printable_breakpoints > 0) |
3792 | annotate_field (5); | |
3793 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3794 | ui_out_table_body (uiout); | |
3795 | if (nr_printable_breakpoints > 0) | |
3796 | annotate_breakpoints_table (); | |
7f3b0473 | 3797 | |
c4093a6a JM |
3798 | ALL_BREAKPOINTS (b) |
3799 | if (bnum == -1 | |
3800 | || bnum == b->number) | |
3801 | { | |
3802 | /* We only print out user settable breakpoints unless the | |
3803 | allflag is set. */ | |
7f3b0473 AC |
3804 | if (allflag || user_settable_breakpoint (b)) |
3805 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3806 | } |
3807 | ||
3b31d625 | 3808 | do_cleanups (bkpttbl_chain); |
698384cd | 3809 | |
7f3b0473 | 3810 | if (nr_printable_breakpoints == 0) |
c906108c | 3811 | { |
8b93c638 JM |
3812 | if (bnum == -1) |
3813 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3814 | else | |
3815 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3816 | bnum); | |
c906108c SS |
3817 | } |
3818 | else | |
c4093a6a JM |
3819 | { |
3820 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3821 | that a comparison of an unsigned with -1 is always false. */ | |
3822 | if (last_addr != (CORE_ADDR) -1) | |
3823 | set_next_address (last_addr); | |
3824 | } | |
c906108c | 3825 | |
c4093a6a JM |
3826 | /* FIXME? Should this be moved up so that it is only called when |
3827 | there have been breakpoints? */ | |
c906108c SS |
3828 | annotate_breakpoints_table_end (); |
3829 | } | |
3830 | ||
c906108c | 3831 | static void |
fba45db2 | 3832 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3833 | { |
3834 | int bnum = -1; | |
3835 | ||
3836 | if (bnum_exp) | |
bb518678 | 3837 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3838 | |
3839 | breakpoint_1 (bnum, 0); | |
3840 | } | |
3841 | ||
7a292a7a | 3842 | static void |
fba45db2 | 3843 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3844 | { |
3845 | int bnum = -1; | |
3846 | ||
3847 | if (bnum_exp) | |
bb518678 | 3848 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3849 | |
3850 | breakpoint_1 (bnum, 1); | |
3851 | } | |
3852 | ||
c906108c SS |
3853 | /* Print a message describing any breakpoints set at PC. */ |
3854 | ||
3855 | static void | |
d674a25c | 3856 | describe_other_breakpoints (CORE_ADDR pc, asection *section, int thread) |
c906108c | 3857 | { |
52f0bd74 AC |
3858 | int others = 0; |
3859 | struct breakpoint *b; | |
c906108c SS |
3860 | |
3861 | ALL_BREAKPOINTS (b) | |
5cab636d | 3862 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3863 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 | 3864 | others++; |
c906108c SS |
3865 | if (others > 0) |
3866 | { | |
a3f17187 AC |
3867 | if (others == 1) |
3868 | printf_filtered (_("Note: breakpoint ")); | |
3869 | else /* if (others == ???) */ | |
3870 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 3871 | ALL_BREAKPOINTS (b) |
5cab636d | 3872 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3873 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 MS |
3874 | { |
3875 | others--; | |
d674a25c AS |
3876 | printf_filtered ("%d", b->number); |
3877 | if (b->thread == -1 && thread != -1) | |
3878 | printf_filtered (" (all threads)"); | |
3879 | else if (b->thread != -1) | |
3880 | printf_filtered (" (thread %d)", b->thread); | |
3881 | printf_filtered ("%s%s ", | |
9f04af04 MS |
3882 | ((b->enable_state == bp_disabled || |
3883 | b->enable_state == bp_shlib_disabled || | |
3884 | b->enable_state == bp_call_disabled) | |
d674a25c | 3885 | ? " (disabled)" |
9f04af04 MS |
3886 | : b->enable_state == bp_permanent |
3887 | ? " (permanent)" | |
3888 | : ""), | |
3889 | (others > 1) ? "," | |
3890 | : ((others == 1) ? " and" : "")); | |
3891 | } | |
a3f17187 | 3892 | printf_filtered (_("also set at pc ")); |
66bf4b3a | 3893 | deprecated_print_address_numeric (pc, 1, gdb_stdout); |
c906108c SS |
3894 | printf_filtered (".\n"); |
3895 | } | |
3896 | } | |
3897 | \f | |
3898 | /* Set the default place to put a breakpoint | |
3899 | for the `break' command with no arguments. */ | |
3900 | ||
3901 | void | |
fba45db2 KB |
3902 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3903 | int line) | |
c906108c SS |
3904 | { |
3905 | default_breakpoint_valid = valid; | |
3906 | default_breakpoint_address = addr; | |
3907 | default_breakpoint_symtab = symtab; | |
3908 | default_breakpoint_line = line; | |
3909 | } | |
3910 | ||
e4f237da KB |
3911 | /* Return true iff it is meaningful to use the address member of |
3912 | BPT. For some breakpoint types, the address member is irrelevant | |
3913 | and it makes no sense to attempt to compare it to other addresses | |
3914 | (or use it for any other purpose either). | |
3915 | ||
3916 | More specifically, each of the following breakpoint types will always | |
3917 | have a zero valued address and we don't want check_duplicates() to mark | |
3918 | breakpoints of any of these types to be a duplicate of an actual | |
3919 | breakpoint at address zero: | |
3920 | ||
3921 | bp_watchpoint | |
3922 | bp_hardware_watchpoint | |
3923 | bp_read_watchpoint | |
3924 | bp_access_watchpoint | |
3925 | bp_catch_exec | |
3926 | bp_longjmp_resume | |
3927 | bp_catch_fork | |
3928 | bp_catch_vork */ | |
3929 | ||
3930 | static int | |
3931 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3932 | { | |
3933 | enum bptype type = bpt->type; | |
3934 | ||
3935 | return (type != bp_watchpoint | |
3936 | && type != bp_hardware_watchpoint | |
3937 | && type != bp_read_watchpoint | |
3938 | && type != bp_access_watchpoint | |
3939 | && type != bp_catch_exec | |
3940 | && type != bp_longjmp_resume | |
3941 | && type != bp_catch_fork | |
3942 | && type != bp_catch_vfork); | |
3943 | } | |
3944 | ||
9f60f21b | 3945 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3946 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3947 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3948 | If we have a permanent breakpoint at the same place as BPT, make |
3949 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3950 | |
3951 | static void | |
9f60f21b | 3952 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3953 | { |
075f6582 | 3954 | struct bp_location *b; |
52f0bd74 | 3955 | int count = 0; |
075f6582 | 3956 | struct bp_location *perm_bp = 0; |
5cab636d | 3957 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 3958 | asection *section = bpt->loc->section; |
c906108c | 3959 | |
e4f237da | 3960 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3961 | return; |
3962 | ||
075f6582 DJ |
3963 | ALL_BP_LOCATIONS (b) |
3964 | if (b->owner->enable_state != bp_disabled | |
3965 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3966 | && !b->owner->pending |
075f6582 DJ |
3967 | && b->owner->enable_state != bp_call_disabled |
3968 | && b->address == address /* address / overlay match */ | |
3969 | && (!overlay_debugging || b->section == section) | |
3970 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3971 | { |
c2c6d25f | 3972 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3973 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3974 | { |
3975 | perm_bp = b; | |
3976 | break; | |
3977 | } | |
3978 | ||
c5aa993b | 3979 | count++; |
075f6582 | 3980 | b->duplicate = count > 1; |
c5aa993b | 3981 | } |
c2c6d25f JM |
3982 | |
3983 | /* If we found a permanent breakpoint at this address, go over the | |
3984 | list again and declare all the other breakpoints there to be the | |
3985 | duplicates. */ | |
3986 | if (perm_bp) | |
3987 | { | |
075f6582 | 3988 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3989 | |
3990 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3991 | if (! perm_bp->inserted) |
8e65ff28 | 3992 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
3993 | _("allegedly permanent breakpoint is not " |
3994 | "actually inserted")); | |
c2c6d25f | 3995 | |
075f6582 | 3996 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3997 | if (b != perm_bp) |
3998 | { | |
075f6582 DJ |
3999 | if (b->owner->enable_state != bp_disabled |
4000 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 4001 | && !b->owner->pending |
075f6582 DJ |
4002 | && b->owner->enable_state != bp_call_disabled |
4003 | && b->address == address /* address / overlay match */ | |
4004 | && (!overlay_debugging || b->section == section) | |
4005 | && breakpoint_address_is_meaningful (b->owner)) | |
4006 | { | |
4007 | if (b->inserted) | |
4008 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4009 | _("another breakpoint was inserted on top of " |
4010 | "a permanent breakpoint")); | |
075f6582 DJ |
4011 | |
4012 | b->duplicate = 1; | |
4013 | } | |
c2c6d25f JM |
4014 | } |
4015 | } | |
c906108c SS |
4016 | } |
4017 | ||
76897487 KB |
4018 | static void |
4019 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4020 | int bnum, int have_bnum) | |
4021 | { | |
4022 | char astr1[40]; | |
4023 | char astr2[40]; | |
4024 | ||
bb599908 PH |
4025 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4026 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4027 | if (have_bnum) |
8a3fe4f8 | 4028 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4029 | bnum, astr1, astr2); |
4030 | else | |
8a3fe4f8 | 4031 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4032 | } |
4033 | ||
4034 | /* Adjust a breakpoint's address to account for architectural constraints | |
4035 | on breakpoint placement. Return the adjusted address. Note: Very | |
4036 | few targets require this kind of adjustment. For most targets, | |
4037 | this function is simply the identity function. */ | |
4038 | ||
4039 | static CORE_ADDR | |
88f7da05 | 4040 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4041 | { |
4042 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4043 | { | |
4044 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4045 | return bpaddr; | |
4046 | } | |
88f7da05 KB |
4047 | else if (bptype == bp_watchpoint |
4048 | || bptype == bp_hardware_watchpoint | |
4049 | || bptype == bp_read_watchpoint | |
4050 | || bptype == bp_access_watchpoint | |
4051 | || bptype == bp_catch_fork | |
4052 | || bptype == bp_catch_vfork | |
4053 | || bptype == bp_catch_exec) | |
4054 | { | |
4055 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4056 | have their addresses modified. */ | |
4057 | return bpaddr; | |
4058 | } | |
76897487 KB |
4059 | else |
4060 | { | |
4061 | CORE_ADDR adjusted_bpaddr; | |
4062 | ||
4063 | /* Some targets have architectural constraints on the placement | |
4064 | of breakpoint instructions. Obtain the adjusted address. */ | |
4065 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4066 | bpaddr); | |
4067 | ||
4068 | /* An adjusted breakpoint address can significantly alter | |
4069 | a user's expectations. Print a warning if an adjustment | |
4070 | is required. */ | |
4071 | if (adjusted_bpaddr != bpaddr) | |
4072 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4073 | ||
4074 | return adjusted_bpaddr; | |
4075 | } | |
4076 | } | |
4077 | ||
7cc221ef DJ |
4078 | /* Allocate a struct bp_location. */ |
4079 | ||
26bb91f3 | 4080 | static struct bp_location * |
e049a4b5 | 4081 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4082 | { |
4083 | struct bp_location *loc, *loc_p; | |
4084 | ||
4085 | loc = xmalloc (sizeof (struct bp_location)); | |
4086 | memset (loc, 0, sizeof (*loc)); | |
4087 | ||
e049a4b5 DJ |
4088 | loc->owner = bpt; |
4089 | ||
4090 | switch (bp_type) | |
4091 | { | |
4092 | case bp_breakpoint: | |
4093 | case bp_until: | |
4094 | case bp_finish: | |
4095 | case bp_longjmp: | |
4096 | case bp_longjmp_resume: | |
4097 | case bp_step_resume: | |
4098 | case bp_through_sigtramp: | |
4099 | case bp_watchpoint_scope: | |
4100 | case bp_call_dummy: | |
4101 | case bp_shlib_event: | |
4102 | case bp_thread_event: | |
4103 | case bp_overlay_event: | |
4104 | case bp_catch_load: | |
4105 | case bp_catch_unload: | |
4106 | loc->loc_type = bp_loc_software_breakpoint; | |
4107 | break; | |
4108 | case bp_hardware_breakpoint: | |
4109 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4110 | break; | |
4111 | case bp_hardware_watchpoint: | |
4112 | case bp_read_watchpoint: | |
4113 | case bp_access_watchpoint: | |
4114 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4115 | break; | |
4116 | case bp_watchpoint: | |
4117 | case bp_catch_fork: | |
4118 | case bp_catch_vfork: | |
4119 | case bp_catch_exec: | |
4120 | case bp_catch_catch: | |
4121 | case bp_catch_throw: | |
4122 | loc->loc_type = bp_loc_other; | |
4123 | break; | |
4124 | default: | |
e2e0b3e5 | 4125 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4126 | } |
4127 | ||
7cc221ef DJ |
4128 | /* Add this breakpoint to the end of the chain. */ |
4129 | ||
4130 | loc_p = bp_location_chain; | |
4131 | if (loc_p == 0) | |
4132 | bp_location_chain = loc; | |
4133 | else | |
4134 | { | |
4135 | while (loc_p->next) | |
4136 | loc_p = loc_p->next; | |
4137 | loc_p->next = loc; | |
4138 | } | |
4139 | ||
4140 | return loc; | |
4141 | } | |
4142 | ||
4d28f7a8 KB |
4143 | /* set_raw_breakpoint() is a low level routine for allocating and |
4144 | partially initializing a breakpoint of type BPTYPE. The newly | |
4145 | created breakpoint's address, section, source file name, and line | |
4146 | number are provided by SAL. The newly created and partially | |
4147 | initialized breakpoint is added to the breakpoint chain and | |
4148 | is also returned as the value of this function. | |
c906108c | 4149 | |
4d28f7a8 KB |
4150 | It is expected that the caller will complete the initialization of |
4151 | the newly created breakpoint struct as well as output any status | |
4152 | information regarding the creation of a new breakpoint. In | |
4153 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4154 | number! Care should be taken to not allow an error() to occur | |
4155 | prior to completing the initialization of the breakpoint. If this | |
4156 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4157 | |
4158 | struct breakpoint * | |
4d28f7a8 | 4159 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4160 | { |
52f0bd74 | 4161 | struct breakpoint *b, *b1; |
c906108c SS |
4162 | |
4163 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4164 | memset (b, 0, sizeof (*b)); | |
e049a4b5 | 4165 | b->loc = allocate_bp_location (b, bptype); |
5cab636d | 4166 | b->loc->requested_address = sal.pc; |
88f7da05 KB |
4167 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4168 | bptype); | |
c906108c SS |
4169 | if (sal.symtab == NULL) |
4170 | b->source_file = NULL; | |
4171 | else | |
4172 | b->source_file = savestring (sal.symtab->filename, | |
4173 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4174 | b->loc->section = sal.section; |
4d28f7a8 | 4175 | b->type = bptype; |
c906108c SS |
4176 | b->language = current_language->la_language; |
4177 | b->input_radix = input_radix; | |
4178 | b->thread = -1; | |
4179 | b->line_number = sal.line; | |
b5de0fa7 | 4180 | b->enable_state = bp_enabled; |
c906108c SS |
4181 | b->next = 0; |
4182 | b->silent = 0; | |
4183 | b->ignore_count = 0; | |
4184 | b->commands = NULL; | |
818dd999 | 4185 | b->frame_id = null_frame_id; |
c906108c SS |
4186 | b->dll_pathname = NULL; |
4187 | b->triggered_dll_pathname = NULL; | |
4188 | b->forked_inferior_pid = 0; | |
4189 | b->exec_pathname = NULL; | |
3086aeae | 4190 | b->ops = NULL; |
0101ce28 | 4191 | b->pending = 0; |
c906108c SS |
4192 | |
4193 | /* Add this breakpoint to the end of the chain | |
4194 | so that a list of breakpoints will come out in order | |
4195 | of increasing numbers. */ | |
4196 | ||
4197 | b1 = breakpoint_chain; | |
4198 | if (b1 == 0) | |
4199 | breakpoint_chain = b; | |
4200 | else | |
4201 | { | |
4202 | while (b1->next) | |
4203 | b1 = b1->next; | |
4204 | b1->next = b; | |
4205 | } | |
4206 | ||
9f60f21b | 4207 | check_duplicates (b); |
c906108c SS |
4208 | breakpoints_changed (); |
4209 | ||
4210 | return b; | |
4211 | } | |
4212 | ||
c2c6d25f JM |
4213 | |
4214 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4215 | instruction, hard-wired into the inferior's code. */ | |
4216 | void | |
4217 | make_breakpoint_permanent (struct breakpoint *b) | |
4218 | { | |
b5de0fa7 | 4219 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4220 | |
4221 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4222 | b->loc->inserted = 1; |
c2c6d25f JM |
4223 | } |
4224 | ||
1900040c MS |
4225 | static struct breakpoint * |
4226 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4227 | { | |
4228 | static int internal_breakpoint_number = -1; | |
4229 | struct symtab_and_line sal; | |
4230 | struct breakpoint *b; | |
4231 | ||
fe39c653 | 4232 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4233 | |
4234 | sal.pc = address; | |
4235 | sal.section = find_pc_overlay (sal.pc); | |
4236 | ||
4237 | b = set_raw_breakpoint (sal, type); | |
4238 | b->number = internal_breakpoint_number--; | |
4239 | b->disposition = disp_donttouch; | |
4240 | ||
4241 | return b; | |
4242 | } | |
4243 | ||
c906108c SS |
4244 | |
4245 | static void | |
fba45db2 | 4246 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4247 | { |
c906108c | 4248 | struct breakpoint *b; |
1900040c | 4249 | struct minimal_symbol *m; |
c906108c | 4250 | |
1900040c MS |
4251 | if (func_name == NULL) |
4252 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4253 | else | |
c906108c | 4254 | { |
5520a790 | 4255 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4256 | return; |
1900040c MS |
4257 | |
4258 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4259 | } |
c906108c | 4260 | |
b5de0fa7 | 4261 | b->enable_state = bp_disabled; |
c906108c SS |
4262 | b->silent = 1; |
4263 | if (func_name) | |
4fcf66da | 4264 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4265 | } |
4266 | ||
53a5351d JM |
4267 | /* Call this routine when stepping and nexting to enable a breakpoint |
4268 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4269 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4270 | ||
4271 | void | |
fba45db2 | 4272 | enable_longjmp_breakpoint (void) |
c906108c | 4273 | { |
52f0bd74 | 4274 | struct breakpoint *b; |
c906108c SS |
4275 | |
4276 | ALL_BREAKPOINTS (b) | |
4277 | if (b->type == bp_longjmp) | |
c5aa993b | 4278 | { |
b5de0fa7 | 4279 | b->enable_state = bp_enabled; |
9f60f21b | 4280 | check_duplicates (b); |
c5aa993b | 4281 | } |
c906108c SS |
4282 | } |
4283 | ||
4284 | void | |
fba45db2 | 4285 | disable_longjmp_breakpoint (void) |
c906108c | 4286 | { |
52f0bd74 | 4287 | struct breakpoint *b; |
c906108c SS |
4288 | |
4289 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4290 | if (b->type == bp_longjmp |
c906108c | 4291 | || b->type == bp_longjmp_resume) |
c5aa993b | 4292 | { |
b5de0fa7 | 4293 | b->enable_state = bp_disabled; |
9f60f21b | 4294 | check_duplicates (b); |
c5aa993b | 4295 | } |
c906108c SS |
4296 | } |
4297 | ||
1900040c MS |
4298 | static void |
4299 | create_overlay_event_breakpoint (char *func_name) | |
4300 | { | |
4301 | struct breakpoint *b; | |
4302 | struct minimal_symbol *m; | |
4303 | ||
5520a790 | 4304 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4305 | return; |
4306 | ||
4307 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4308 | bp_overlay_event); | |
4309 | b->addr_string = xstrdup (func_name); | |
4310 | ||
4311 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4312 | { |
4313 | b->enable_state = bp_enabled; | |
4314 | overlay_events_enabled = 1; | |
4315 | } | |
1900040c | 4316 | else |
c02f5703 MS |
4317 | { |
4318 | b->enable_state = bp_disabled; | |
4319 | overlay_events_enabled = 0; | |
4320 | } | |
1900040c MS |
4321 | } |
4322 | ||
4323 | void | |
4324 | enable_overlay_breakpoints (void) | |
4325 | { | |
52f0bd74 | 4326 | struct breakpoint *b; |
1900040c MS |
4327 | |
4328 | ALL_BREAKPOINTS (b) | |
4329 | if (b->type == bp_overlay_event) | |
4330 | { | |
4331 | b->enable_state = bp_enabled; | |
4332 | check_duplicates (b); | |
c02f5703 | 4333 | overlay_events_enabled = 1; |
1900040c MS |
4334 | } |
4335 | } | |
4336 | ||
4337 | void | |
4338 | disable_overlay_breakpoints (void) | |
4339 | { | |
52f0bd74 | 4340 | struct breakpoint *b; |
1900040c MS |
4341 | |
4342 | ALL_BREAKPOINTS (b) | |
4343 | if (b->type == bp_overlay_event) | |
4344 | { | |
4345 | b->enable_state = bp_disabled; | |
4346 | check_duplicates (b); | |
c02f5703 | 4347 | overlay_events_enabled = 0; |
1900040c MS |
4348 | } |
4349 | } | |
4350 | ||
c4093a6a | 4351 | struct breakpoint * |
fba45db2 | 4352 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4353 | { |
4354 | struct breakpoint *b; | |
c4093a6a | 4355 | |
1900040c | 4356 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4357 | |
b5de0fa7 | 4358 | b->enable_state = bp_enabled; |
c4093a6a | 4359 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4360 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4361 | |
4362 | return b; | |
4363 | } | |
4364 | ||
4365 | void | |
4366 | remove_thread_event_breakpoints (void) | |
4367 | { | |
4368 | struct breakpoint *b, *temp; | |
4369 | ||
4370 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4371 | if (b->type == bp_thread_event) | |
4372 | delete_breakpoint (b); | |
4373 | } | |
4374 | ||
0101ce28 JJ |
4375 | struct captured_parse_breakpoint_args |
4376 | { | |
4377 | char **arg_p; | |
4378 | struct symtabs_and_lines *sals_p; | |
4379 | char ***addr_string_p; | |
4380 | int *not_found_ptr; | |
4381 | }; | |
4382 | ||
4383 | struct lang_and_radix | |
4384 | { | |
4385 | enum language lang; | |
4386 | int radix; | |
4387 | }; | |
4388 | ||
4389 | /* Cleanup helper routine to restore the current language and | |
4390 | input radix. */ | |
4391 | static void | |
4392 | do_restore_lang_radix_cleanup (void *old) | |
4393 | { | |
4394 | struct lang_and_radix *p = old; | |
4395 | set_language (p->lang); | |
4396 | input_radix = p->radix; | |
4397 | } | |
4398 | ||
4399 | /* Try and resolve a pending breakpoint. */ | |
4400 | static int | |
4401 | resolve_pending_breakpoint (struct breakpoint *b) | |
4402 | { | |
4403 | /* Try and reparse the breakpoint in case the shared library | |
4404 | is now loaded. */ | |
4405 | struct symtabs_and_lines sals; | |
4406 | struct symtab_and_line pending_sal; | |
4407 | char **cond_string = (char **) NULL; | |
4408 | char *copy_arg = b->addr_string; | |
4409 | char **addr_string; | |
4410 | char *errmsg; | |
4411 | int rc; | |
4412 | int not_found = 0; | |
4413 | struct ui_file *old_gdb_stderr; | |
4414 | struct lang_and_radix old_lr; | |
4415 | struct cleanup *old_chain; | |
4416 | ||
4417 | /* Set language, input-radix, then reissue breakpoint command. | |
4418 | Ensure the language and input-radix are restored afterwards. */ | |
4419 | old_lr.lang = current_language->la_language; | |
4420 | old_lr.radix = input_radix; | |
4421 | old_chain = make_cleanup (do_restore_lang_radix_cleanup, &old_lr); | |
4422 | ||
4423 | set_language (b->language); | |
4424 | input_radix = b->input_radix; | |
4425 | rc = break_command_1 (b->addr_string, b->flag, b->from_tty, b); | |
4426 | ||
4427 | if (rc == GDB_RC_OK) | |
4428 | /* Pending breakpoint has been resolved. */ | |
a3f17187 | 4429 | printf_filtered (_("Pending breakpoint \"%s\" resolved\n"), b->addr_string); |
0101ce28 JJ |
4430 | |
4431 | do_cleanups (old_chain); | |
4432 | return rc; | |
4433 | } | |
4434 | ||
cae688ec JJ |
4435 | void |
4436 | remove_solib_event_breakpoints (void) | |
4437 | { | |
4438 | struct breakpoint *b, *temp; | |
4439 | ||
4440 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4441 | if (b->type == bp_shlib_event) | |
4442 | delete_breakpoint (b); | |
4443 | } | |
4444 | ||
4445 | struct breakpoint * | |
4446 | create_solib_event_breakpoint (CORE_ADDR address) | |
4447 | { | |
4448 | struct breakpoint *b; | |
4449 | ||
4450 | b = create_internal_breakpoint (address, bp_shlib_event); | |
4451 | return b; | |
4452 | } | |
4453 | ||
4454 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4455 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4456 | ||
4457 | void | |
4458 | disable_breakpoints_in_shlibs (int silent) | |
4459 | { | |
4460 | struct breakpoint *b; | |
4461 | int disabled_shlib_breaks = 0; | |
4462 | ||
4463 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4464 | ALL_BREAKPOINTS (b) | |
4465 | { | |
a77053c2 MK |
4466 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
4467 | && breakpoint_enabled (b) && !b->loc->duplicate | |
4468 | #ifdef PC_SOLIB | |
4469 | && PC_SOLIB (b->loc->address) | |
4470 | #else | |
4471 | && solib_address (b->loc->address) | |
4472 | #endif | |
4473 | ) | |
cae688ec JJ |
4474 | { |
4475 | b->enable_state = bp_shlib_disabled; | |
4476 | if (!silent) | |
4477 | { | |
4478 | if (!disabled_shlib_breaks) | |
4479 | { | |
4480 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4481 | warning (_("Temporarily disabling shared library breakpoints:")); |
cae688ec JJ |
4482 | } |
4483 | disabled_shlib_breaks = 1; | |
8a3fe4f8 | 4484 | warning (_("breakpoint #%d "), b->number); |
cae688ec JJ |
4485 | } |
4486 | } | |
cae688ec JJ |
4487 | } |
4488 | } | |
4489 | ||
84acb35a JJ |
4490 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4491 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4492 | ||
4493 | void | |
4494 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) | |
4495 | { | |
4496 | struct breakpoint *b; | |
4497 | int disabled_shlib_breaks = 0; | |
4498 | ||
84acb35a JJ |
4499 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ |
4500 | ALL_BREAKPOINTS (b) | |
4501 | { | |
4502 | if ((b->loc->loc_type == bp_loc_hardware_breakpoint | |
4503 | || b->loc->loc_type == bp_loc_software_breakpoint) | |
a77053c2 | 4504 | && breakpoint_enabled (b) && !b->loc->duplicate) |
84acb35a | 4505 | { |
a77053c2 | 4506 | #ifdef PC_SOLIB |
84acb35a | 4507 | char *so_name = PC_SOLIB (b->loc->address); |
a77053c2 MK |
4508 | #else |
4509 | char *so_name = solib_address (b->loc->address); | |
4510 | #endif | |
4511 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a JJ |
4512 | { |
4513 | b->enable_state = bp_shlib_disabled; | |
4514 | /* At this point, we cannot rely on remove_breakpoint | |
4515 | succeeding so we must mark the breakpoint as not inserted | |
4516 | to prevent future errors occurring in remove_breakpoints. */ | |
4517 | b->loc->inserted = 0; | |
4518 | if (!disabled_shlib_breaks) | |
4519 | { | |
4520 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4521 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4522 | so_name); |
4523 | } | |
4524 | disabled_shlib_breaks = 1; | |
4525 | } | |
4526 | } | |
4527 | } | |
84acb35a JJ |
4528 | } |
4529 | ||
c906108c SS |
4530 | /* Try to reenable any breakpoints in shared libraries. */ |
4531 | void | |
fba45db2 | 4532 | re_enable_breakpoints_in_shlibs (void) |
c906108c | 4533 | { |
0101ce28 | 4534 | struct breakpoint *b, *tmp; |
c906108c | 4535 | |
0101ce28 JJ |
4536 | ALL_BREAKPOINTS_SAFE (b, tmp) |
4537 | { | |
b5de0fa7 | 4538 | if (b->enable_state == bp_shlib_disabled) |
0101ce28 | 4539 | { |
47b667de AC |
4540 | gdb_byte buf[1]; |
4541 | char *lib; | |
0101ce28 | 4542 | |
a77053c2 MK |
4543 | /* Do not reenable the breakpoint if the shared library is |
4544 | still not mapped in. */ | |
4545 | #ifdef PC_SOLIB | |
0101ce28 | 4546 | lib = PC_SOLIB (b->loc->address); |
a77053c2 MK |
4547 | #else |
4548 | lib = solib_address (b->loc->address); | |
4549 | #endif | |
0101ce28 JJ |
4550 | if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0) |
4551 | b->enable_state = bp_enabled; | |
4552 | } | |
4553 | else if (b->pending && (b->enable_state == bp_enabled)) | |
4554 | { | |
4555 | if (resolve_pending_breakpoint (b) == GDB_RC_OK) | |
4556 | delete_breakpoint (b); | |
4557 | } | |
4558 | } | |
c906108c SS |
4559 | } |
4560 | ||
c906108c | 4561 | static void |
fba45db2 KB |
4562 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4563 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4564 | { |
c5aa993b | 4565 | struct breakpoint *b; |
c906108c | 4566 | struct symtabs_and_lines sals; |
c5aa993b JM |
4567 | struct cleanup *old_chain; |
4568 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4569 | char *addr_start = hookname; |
4570 | char *addr_end = NULL; | |
4571 | char **canonical = (char **) NULL; | |
4572 | int thread = -1; /* All threads. */ | |
4573 | ||
1272ad14 MS |
4574 | /* Set a breakpoint on the specified hook. */ |
4575 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, | |
4576 | 0, &canonical, NULL); | |
c906108c | 4577 | addr_end = hookname; |
c5aa993b | 4578 | |
c906108c SS |
4579 | if (sals.nelts == 0) |
4580 | { | |
8a3fe4f8 AC |
4581 | warning (_("Unable to set a breakpoint on dynamic linker callback.\n" |
4582 | "Suggest linking with /opt/langtools/lib/end.o.\n" | |
4583 | "GDB will be unable to track shl_load/shl_unload calls.")); | |
c906108c SS |
4584 | return; |
4585 | } | |
4586 | if (sals.nelts != 1) | |
4587 | { | |
8a3fe4f8 AC |
4588 | warning (_("Unable to set unique breakpoint on dynamic linker callback.\n" |
4589 | "GDB will be unable to track shl_load/shl_unload calls.")); | |
c906108c SS |
4590 | return; |
4591 | } | |
4592 | ||
53a5351d JM |
4593 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4594 | in case the following errors out. */ | |
b8c9b27d | 4595 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4596 | if (canonical != (char **) NULL) |
c906108c | 4597 | { |
b8c9b27d | 4598 | make_cleanup (xfree, canonical); |
c906108c SS |
4599 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4600 | if (canonical[0] != NULL) | |
b8c9b27d | 4601 | make_cleanup (xfree, canonical[0]); |
c906108c | 4602 | } |
c5aa993b | 4603 | |
c906108c | 4604 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4605 | |
c906108c | 4606 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4607 | if (canonical != (char **) NULL) |
c906108c | 4608 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4609 | |
4d28f7a8 | 4610 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4611 | set_breakpoint_count (breakpoint_count + 1); |
4612 | b->number = breakpoint_count; | |
4613 | b->cond = NULL; | |
53a5351d JM |
4614 | b->cond_string = (cond_string == NULL) ? |
4615 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4616 | b->thread = thread; |
c5aa993b JM |
4617 | |
4618 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4619 | b->addr_string = canonical[0]; |
4620 | else if (addr_start) | |
4621 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4622 | |
b5de0fa7 EZ |
4623 | b->enable_state = bp_enabled; |
4624 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4625 | |
c906108c SS |
4626 | if (dll_pathname == NULL) |
4627 | b->dll_pathname = NULL; | |
4628 | else | |
4629 | { | |
4630 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4631 | strcpy (b->dll_pathname, dll_pathname); | |
4632 | } | |
c5aa993b | 4633 | |
c906108c SS |
4634 | mention (b); |
4635 | do_cleanups (old_chain); | |
4636 | } | |
4637 | ||
4638 | void | |
fba45db2 KB |
4639 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4640 | char *dll_pathname, char *cond_string) | |
c906108c | 4641 | { |
53a5351d JM |
4642 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4643 | cond_string, bp_catch_load); | |
c906108c SS |
4644 | } |
4645 | ||
4646 | void | |
fba45db2 KB |
4647 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4648 | char *dll_pathname, char *cond_string) | |
c906108c | 4649 | { |
1272ad14 | 4650 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
53a5351d | 4651 | cond_string, bp_catch_unload); |
c906108c SS |
4652 | } |
4653 | ||
4654 | static void | |
fba45db2 KB |
4655 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4656 | enum bptype bp_kind) | |
c906108c | 4657 | { |
c5aa993b JM |
4658 | struct symtab_and_line sal; |
4659 | struct breakpoint *b; | |
4660 | int thread = -1; /* All threads. */ | |
4661 | ||
fe39c653 | 4662 | init_sal (&sal); |
c906108c SS |
4663 | sal.pc = 0; |
4664 | sal.symtab = NULL; | |
4665 | sal.line = 0; | |
c5aa993b | 4666 | |
4d28f7a8 | 4667 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4668 | set_breakpoint_count (breakpoint_count + 1); |
4669 | b->number = breakpoint_count; | |
4670 | b->cond = NULL; | |
53a5351d JM |
4671 | b->cond_string = (cond_string == NULL) ? |
4672 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4673 | b->thread = thread; |
4674 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4675 | b->enable_state = bp_enabled; |
4676 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4677 | b->forked_inferior_pid = 0; |
c5aa993b | 4678 | |
c906108c SS |
4679 | mention (b); |
4680 | } | |
4681 | ||
4682 | void | |
fba45db2 | 4683 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4684 | { |
4685 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4686 | } | |
c5aa993b | 4687 | |
c906108c | 4688 | void |
fba45db2 | 4689 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4690 | { |
4691 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4692 | } | |
4693 | ||
4694 | void | |
fba45db2 | 4695 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4696 | { |
c5aa993b JM |
4697 | struct symtab_and_line sal; |
4698 | struct breakpoint *b; | |
4699 | int thread = -1; /* All threads. */ | |
c906108c | 4700 | |
fe39c653 | 4701 | init_sal (&sal); |
c906108c SS |
4702 | sal.pc = 0; |
4703 | sal.symtab = NULL; | |
4704 | sal.line = 0; | |
4705 | ||
4d28f7a8 | 4706 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4707 | set_breakpoint_count (breakpoint_count + 1); |
4708 | b->number = breakpoint_count; | |
4709 | b->cond = NULL; | |
53a5351d JM |
4710 | b->cond_string = (cond_string == NULL) ? |
4711 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4712 | b->thread = thread; |
4713 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4714 | b->enable_state = bp_enabled; |
4715 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4716 | |
c906108c SS |
4717 | mention (b); |
4718 | } | |
4719 | ||
4720 | static int | |
fba45db2 | 4721 | hw_breakpoint_used_count (void) |
c906108c | 4722 | { |
52f0bd74 | 4723 | struct breakpoint *b; |
c906108c SS |
4724 | int i = 0; |
4725 | ||
4726 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4727 | { |
b5de0fa7 | 4728 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4729 | i++; |
4730 | } | |
c906108c SS |
4731 | |
4732 | return i; | |
4733 | } | |
4734 | ||
4735 | static int | |
fba45db2 | 4736 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4737 | { |
52f0bd74 | 4738 | struct breakpoint *b; |
c906108c SS |
4739 | int i = 0; |
4740 | ||
4741 | *other_type_used = 0; | |
4742 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4743 | { |
468d015d | 4744 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4745 | { |
4746 | if (b->type == type) | |
4747 | i++; | |
4748 | else if ((b->type == bp_hardware_watchpoint || | |
4749 | b->type == bp_read_watchpoint || | |
468d015d | 4750 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4751 | *other_type_used = 1; |
4752 | } | |
4753 | } | |
c906108c SS |
4754 | return i; |
4755 | } | |
4756 | ||
53a5351d JM |
4757 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4758 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4759 | |
53a5351d JM |
4760 | FIXME - This ought to be done by setting a temporary breakpoint |
4761 | that gets deleted automatically... */ | |
c906108c SS |
4762 | |
4763 | void | |
818dd999 | 4764 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4765 | { |
52f0bd74 | 4766 | struct breakpoint *b; |
c906108c SS |
4767 | |
4768 | ALL_BREAKPOINTS (b) | |
4769 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4770 | { |
5cab636d | 4771 | b->loc->requested_address = pc; |
88f7da05 KB |
4772 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4773 | b->type); | |
b5de0fa7 | 4774 | b->enable_state = bp_enabled; |
818dd999 | 4775 | b->frame_id = frame_id; |
9f60f21b | 4776 | check_duplicates (b); |
c5aa993b JM |
4777 | return; |
4778 | } | |
c906108c SS |
4779 | } |
4780 | ||
4781 | void | |
fba45db2 | 4782 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4783 | { |
c5aa993b | 4784 | struct breakpoint *b; |
c906108c SS |
4785 | |
4786 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4787 | { |
4788 | if (((b->type == bp_watchpoint) | |
4789 | || (b->type == bp_hardware_watchpoint) | |
4790 | || (b->type == bp_read_watchpoint) | |
4791 | || (b->type == bp_access_watchpoint) | |
4792 | || ep_is_exception_catchpoint (b)) | |
468d015d | 4793 | && breakpoint_enabled (b)) |
c5aa993b | 4794 | { |
b5de0fa7 | 4795 | b->enable_state = bp_call_disabled; |
9f60f21b | 4796 | check_duplicates (b); |
c5aa993b JM |
4797 | } |
4798 | } | |
c906108c SS |
4799 | } |
4800 | ||
4801 | void | |
fba45db2 | 4802 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4803 | { |
c5aa993b | 4804 | struct breakpoint *b; |
c906108c SS |
4805 | |
4806 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4807 | { |
4808 | if (((b->type == bp_watchpoint) | |
4809 | || (b->type == bp_hardware_watchpoint) | |
4810 | || (b->type == bp_read_watchpoint) | |
4811 | || (b->type == bp_access_watchpoint) | |
4812 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4813 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4814 | { |
b5de0fa7 | 4815 | b->enable_state = bp_enabled; |
9f60f21b | 4816 | check_duplicates (b); |
c5aa993b JM |
4817 | } |
4818 | } | |
c906108c SS |
4819 | } |
4820 | ||
4821 | ||
4822 | /* Set a breakpoint that will evaporate an end of command | |
4823 | at address specified by SAL. | |
4824 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4825 | ||
4826 | struct breakpoint * | |
818dd999 | 4827 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4828 | enum bptype type) |
c906108c | 4829 | { |
52f0bd74 | 4830 | struct breakpoint *b; |
4d28f7a8 | 4831 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4832 | b->enable_state = bp_enabled; |
4833 | b->disposition = disp_donttouch; | |
818dd999 | 4834 | b->frame_id = frame_id; |
c906108c SS |
4835 | |
4836 | /* If we're debugging a multi-threaded program, then we | |
4837 | want momentary breakpoints to be active in only a | |
4838 | single thread of control. */ | |
39f77062 KB |
4839 | if (in_thread_list (inferior_ptid)) |
4840 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4841 | |
4842 | return b; | |
4843 | } | |
c906108c | 4844 | \f |
c5aa993b | 4845 | |
c906108c SS |
4846 | /* Tell the user we have just set a breakpoint B. */ |
4847 | ||
4848 | static void | |
fba45db2 | 4849 | mention (struct breakpoint *b) |
c906108c SS |
4850 | { |
4851 | int say_where = 0; | |
3b31d625 | 4852 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4853 | struct ui_stream *stb; |
4854 | ||
4855 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4856 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4857 | |
9a4105ab AC |
4858 | /* FIXME: This is misplaced; mention() is called by things (like |
4859 | hitting a watchpoint) other than breakpoint creation. It should | |
4860 | be possible to clean this up and at the same time replace the | |
4861 | random calls to breakpoint_changed with this hook, as has already | |
4862 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4863 | if (deprecated_create_breakpoint_hook) | |
4864 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4865 | breakpoint_create_event (b->number); |
c906108c | 4866 | |
3086aeae DJ |
4867 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4868 | b->ops->print_mention (b); | |
4869 | else | |
4870 | switch (b->type) | |
4871 | { | |
4872 | case bp_none: | |
a3f17187 | 4873 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4874 | break; |
4875 | case bp_watchpoint: | |
4876 | ui_out_text (uiout, "Watchpoint "); | |
4877 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4878 | ui_out_field_int (uiout, "number", b->number); | |
4879 | ui_out_text (uiout, ": "); | |
4880 | print_expression (b->exp, stb->stream); | |
4881 | ui_out_field_stream (uiout, "exp", stb); | |
4882 | do_cleanups (ui_out_chain); | |
4883 | break; | |
4884 | case bp_hardware_watchpoint: | |
4885 | ui_out_text (uiout, "Hardware watchpoint "); | |
4886 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4887 | ui_out_field_int (uiout, "number", b->number); | |
4888 | ui_out_text (uiout, ": "); | |
4889 | print_expression (b->exp, stb->stream); | |
4890 | ui_out_field_stream (uiout, "exp", stb); | |
4891 | do_cleanups (ui_out_chain); | |
4892 | break; | |
4893 | case bp_read_watchpoint: | |
4894 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4895 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4896 | ui_out_field_int (uiout, "number", b->number); | |
4897 | ui_out_text (uiout, ": "); | |
4898 | print_expression (b->exp, stb->stream); | |
4899 | ui_out_field_stream (uiout, "exp", stb); | |
4900 | do_cleanups (ui_out_chain); | |
4901 | break; | |
4902 | case bp_access_watchpoint: | |
4903 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4904 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4905 | ui_out_field_int (uiout, "number", b->number); | |
4906 | ui_out_text (uiout, ": "); | |
4907 | print_expression (b->exp, stb->stream); | |
4908 | ui_out_field_stream (uiout, "exp", stb); | |
4909 | do_cleanups (ui_out_chain); | |
4910 | break; | |
4911 | case bp_breakpoint: | |
4912 | if (ui_out_is_mi_like_p (uiout)) | |
4913 | { | |
4914 | say_where = 0; | |
4915 | break; | |
4916 | } | |
a3f17187 | 4917 | printf_filtered (_("Breakpoint %d"), b->number); |
3086aeae DJ |
4918 | say_where = 1; |
4919 | break; | |
4920 | case bp_hardware_breakpoint: | |
4921 | if (ui_out_is_mi_like_p (uiout)) | |
4922 | { | |
4923 | say_where = 0; | |
4924 | break; | |
4925 | } | |
a3f17187 | 4926 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
4927 | say_where = 1; |
4928 | break; | |
4929 | case bp_catch_load: | |
4930 | case bp_catch_unload: | |
a3f17187 | 4931 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
4932 | b->number, |
4933 | (b->type == bp_catch_load) ? "load" : "unload", | |
4934 | (b->dll_pathname != NULL) ? | |
4935 | b->dll_pathname : "<any library>"); | |
4936 | break; | |
4937 | case bp_catch_fork: | |
4938 | case bp_catch_vfork: | |
a3f17187 | 4939 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4940 | b->number, |
4941 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4942 | break; | |
4943 | case bp_catch_exec: | |
a3f17187 | 4944 | printf_filtered (_("Catchpoint %d (exec)"), |
3086aeae DJ |
4945 | b->number); |
4946 | break; | |
4947 | case bp_catch_catch: | |
4948 | case bp_catch_throw: | |
a3f17187 | 4949 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4950 | b->number, |
4951 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
4952 | break; | |
4953 | ||
4954 | case bp_until: | |
4955 | case bp_finish: | |
4956 | case bp_longjmp: | |
4957 | case bp_longjmp_resume: | |
4958 | case bp_step_resume: | |
4959 | case bp_through_sigtramp: | |
4960 | case bp_call_dummy: | |
4961 | case bp_watchpoint_scope: | |
4962 | case bp_shlib_event: | |
4963 | case bp_thread_event: | |
4964 | case bp_overlay_event: | |
4965 | break; | |
4966 | } | |
c906108c | 4967 | |
c906108c SS |
4968 | if (say_where) |
4969 | { | |
a3f17187 AC |
4970 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
4971 | single string. */ | |
0101ce28 | 4972 | if (b->pending) |
c906108c | 4973 | { |
a3f17187 | 4974 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
4975 | } |
4976 | else | |
4977 | { | |
4978 | if (addressprint || b->source_file == NULL) | |
4979 | { | |
4980 | printf_filtered (" at "); | |
66bf4b3a | 4981 | deprecated_print_address_numeric (b->loc->address, 1, gdb_stdout); |
0101ce28 JJ |
4982 | } |
4983 | if (b->source_file) | |
4984 | printf_filtered (": file %s, line %d.", | |
4985 | b->source_file, b->line_number); | |
c906108c | 4986 | } |
c906108c | 4987 | } |
8b93c638 | 4988 | do_cleanups (old_chain); |
9dc5e2a9 | 4989 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4990 | return; |
c906108c SS |
4991 | printf_filtered ("\n"); |
4992 | } | |
c906108c | 4993 | \f |
c5aa993b | 4994 | |
c3f6f71d JM |
4995 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4996 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4997 | COND[i] and COND_STRING[i] values. | |
4998 | ||
0101ce28 JJ |
4999 | The parameter PENDING_BP points to a pending breakpoint that is |
5000 | the basis of the breakpoints currently being created. The pending | |
5001 | breakpoint may contain a separate condition string or commands | |
5002 | that were added after the initial pending breakpoint was created. | |
5003 | ||
c3f6f71d JM |
5004 | NOTE: If the function succeeds, the caller is expected to cleanup |
5005 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
5006 | array contents). If the function fails (error() is called), the | |
5007 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5008 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5009 | |
5010 | static void | |
c3f6f71d JM |
5011 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
5012 | struct expression **cond, char **cond_string, | |
5013 | enum bptype type, enum bpdisp disposition, | |
0101ce28 JJ |
5014 | int thread, int ignore_count, int from_tty, |
5015 | struct breakpoint *pending_bp) | |
c906108c | 5016 | { |
c3f6f71d JM |
5017 | if (type == bp_hardware_breakpoint) |
5018 | { | |
5019 | int i = hw_breakpoint_used_count (); | |
5020 | int target_resources_ok = | |
5021 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5022 | i + sals.nelts, 0); | |
5023 | if (target_resources_ok == 0) | |
8a3fe4f8 | 5024 | error (_("No hardware breakpoint support in the target.")); |
c3f6f71d | 5025 | else if (target_resources_ok < 0) |
8a3fe4f8 | 5026 | error (_("Hardware breakpoints used exceeds limit.")); |
c3f6f71d | 5027 | } |
c906108c | 5028 | |
c3f6f71d JM |
5029 | /* Now set all the breakpoints. */ |
5030 | { | |
5031 | int i; | |
5032 | for (i = 0; i < sals.nelts; i++) | |
5033 | { | |
5034 | struct breakpoint *b; | |
5035 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 5036 | |
c3f6f71d | 5037 | if (from_tty) |
d674a25c | 5038 | describe_other_breakpoints (sal.pc, sal.section, thread); |
c3f6f71d | 5039 | |
4d28f7a8 | 5040 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
5041 | set_breakpoint_count (breakpoint_count + 1); |
5042 | b->number = breakpoint_count; | |
c3f6f71d JM |
5043 | b->cond = cond[i]; |
5044 | b->thread = thread; | |
d8ef46f5 DJ |
5045 | if (addr_string[i]) |
5046 | b->addr_string = addr_string[i]; | |
5047 | else | |
5048 | /* addr_string has to be used or breakpoint_re_set will delete | |
5049 | me. */ | |
b435e160 | 5050 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c3f6f71d JM |
5051 | b->cond_string = cond_string[i]; |
5052 | b->ignore_count = ignore_count; | |
b5de0fa7 | 5053 | b->enable_state = bp_enabled; |
c3f6f71d | 5054 | b->disposition = disposition; |
0101ce28 JJ |
5055 | /* If resolving a pending breakpoint, a check must be made to see if |
5056 | the user has specified a new condition or commands for the | |
5057 | breakpoint. A new condition will override any condition that was | |
5058 | initially specified with the initial breakpoint command. */ | |
5059 | if (pending_bp) | |
5060 | { | |
5061 | char *arg; | |
5062 | if (pending_bp->cond_string) | |
5063 | { | |
5064 | arg = pending_bp->cond_string; | |
5065 | b->cond_string = savestring (arg, strlen (arg)); | |
5066 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
5067 | if (*arg) | |
8a3fe4f8 | 5068 | error (_("Junk at end of pending breakpoint condition expression")); |
0101ce28 JJ |
5069 | } |
5070 | /* If there are commands associated with the breakpoint, they should | |
5071 | be copied too. */ | |
5072 | if (pending_bp->commands) | |
5073 | b->commands = copy_command_lines (pending_bp->commands); | |
0a5e7efe JI |
5074 | |
5075 | /* We have to copy over the ignore_count and thread as well. */ | |
5076 | b->ignore_count = pending_bp->ignore_count; | |
5077 | b->thread = pending_bp->thread; | |
0101ce28 | 5078 | } |
c3f6f71d JM |
5079 | mention (b); |
5080 | } | |
5081 | } | |
5082 | } | |
c906108c | 5083 | |
c3f6f71d JM |
5084 | /* Parse ARG which is assumed to be a SAL specification possibly |
5085 | followed by conditionals. On return, SALS contains an array of SAL | |
5086 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5087 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5088 | |
b9362cc7 | 5089 | static void |
c3f6f71d JM |
5090 | parse_breakpoint_sals (char **address, |
5091 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5092 | char ***addr_string, |
5093 | int *not_found_ptr) | |
c3f6f71d JM |
5094 | { |
5095 | char *addr_start = *address; | |
5096 | *addr_string = NULL; | |
5097 | /* If no arg given, or if first arg is 'if ', use the default | |
5098 | breakpoint. */ | |
5099 | if ((*address) == NULL | |
5100 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5101 | { |
5102 | if (default_breakpoint_valid) | |
5103 | { | |
c3f6f71d | 5104 | struct symtab_and_line sal; |
fe39c653 | 5105 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5106 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5107 | xmalloc (sizeof (struct symtab_and_line)); |
5108 | sal.pc = default_breakpoint_address; | |
5109 | sal.line = default_breakpoint_line; | |
5110 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5111 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5112 | sals->sals[0] = sal; |
5113 | sals->nelts = 1; | |
c906108c SS |
5114 | } |
5115 | else | |
8a3fe4f8 | 5116 | error (_("No default breakpoint address now.")); |
c906108c SS |
5117 | } |
5118 | else | |
5119 | { | |
c906108c | 5120 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5121 | current_source_symtab (which is decode_line_1's default). This |
5122 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5123 | leaving default_breakpoint_* alone. |
5124 | ObjC: However, don't match an Objective-C method name which | |
5125 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5126 | |
c214a6fd | 5127 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5128 | |
c906108c | 5129 | if (default_breakpoint_valid |
0378c332 | 5130 | && (!cursal.symtab |
1aeae86e AF |
5131 | || ((strchr ("+-", (*address)[0]) != NULL) |
5132 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5133 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5134 | default_breakpoint_line, addr_string, |
5135 | not_found_ptr); | |
c906108c | 5136 | else |
0101ce28 JJ |
5137 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5138 | addr_string, not_found_ptr); | |
c906108c | 5139 | } |
c3f6f71d JM |
5140 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5141 | if (sals->nelts > 0 && *addr_string == NULL) | |
5142 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5143 | if (addr_start != (*address)) | |
c906108c | 5144 | { |
c3f6f71d JM |
5145 | int i; |
5146 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5147 | { |
c3f6f71d JM |
5148 | /* Add the string if not present. */ |
5149 | if ((*addr_string)[i] == NULL) | |
5150 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5151 | } |
5152 | } | |
c3f6f71d | 5153 | } |
c906108c | 5154 | |
c906108c | 5155 | |
c3f6f71d JM |
5156 | /* Convert each SAL into a real PC. Verify that the PC can be |
5157 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5158 | |
b9362cc7 | 5159 | static void |
c3f6f71d JM |
5160 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5161 | char *address) | |
5162 | { | |
5163 | int i; | |
5164 | for (i = 0; i < sals->nelts; i++) | |
5165 | { | |
5166 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
5167 | |
5168 | /* It's possible for the PC to be nonzero, but still an illegal | |
5169 | value on some targets. | |
5170 | ||
5171 | For example, on HP-UX if you start gdb, and before running the | |
5172 | inferior you try to set a breakpoint on a shared library function | |
5173 | "foo" where the inferior doesn't call "foo" directly but does | |
5174 | pass its address to another function call, then we do find a | |
5175 | minimal symbol for the "foo", but it's address is invalid. | |
5176 | (Appears to be an index into a table that the loader sets up | |
5177 | when the inferior is run.) | |
5178 | ||
5179 | Give the target a chance to bless sals.sals[i].pc before we | |
5180 | try to make a breakpoint for it. */ | |
45b75230 AC |
5181 | #ifdef DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE |
5182 | if (DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) | |
c5aa993b | 5183 | { |
c3f6f71d | 5184 | if (address == NULL) |
8a3fe4f8 | 5185 | error (_("Cannot break without a running program.")); |
c3f6f71d | 5186 | else |
8a3fe4f8 | 5187 | error (_("Cannot break on %s without a running program."), |
c3f6f71d | 5188 | address); |
c5aa993b | 5189 | } |
45b75230 | 5190 | #endif |
c3f6f71d JM |
5191 | } |
5192 | } | |
5193 | ||
05ff989b | 5194 | static void |
0101ce28 JJ |
5195 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5196 | { | |
5197 | struct captured_parse_breakpoint_args *args = data; | |
5198 | ||
5199 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5200 | args->not_found_ptr); | |
0101ce28 JJ |
5201 | } |
5202 | ||
c3f6f71d JM |
5203 | /* Set a breakpoint according to ARG (function, linenum or *address) |
5204 | flag: first bit : 0 non-temporary, 1 temporary. | |
0101ce28 | 5205 | second bit : 0 normal breakpoint, 1 hardware breakpoint. |
c5aa993b | 5206 | |
0101ce28 JJ |
5207 | PENDING_BP is non-NULL when this function is being called to resolve |
5208 | a pending breakpoint. */ | |
5209 | ||
5210 | static int | |
5211 | break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp) | |
c3f6f71d | 5212 | { |
71fff37b | 5213 | struct gdb_exception e; |
c3f6f71d JM |
5214 | int tempflag, hardwareflag; |
5215 | struct symtabs_and_lines sals; | |
52f0bd74 | 5216 | struct expression **cond = 0; |
0101ce28 | 5217 | struct symtab_and_line pending_sal; |
c3f6f71d | 5218 | char **cond_string = (char **) NULL; |
0101ce28 JJ |
5219 | char *copy_arg; |
5220 | char *err_msg; | |
c3f6f71d JM |
5221 | char *addr_start = arg; |
5222 | char **addr_string; | |
5223 | struct cleanup *old_chain; | |
5224 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5225 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5226 | int i; |
0101ce28 | 5227 | int pending = 0; |
c3f6f71d JM |
5228 | int thread = -1; |
5229 | int ignore_count = 0; | |
0101ce28 | 5230 | int not_found = 0; |
c3f6f71d JM |
5231 | |
5232 | hardwareflag = flag & BP_HARDWAREFLAG; | |
5233 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 5234 | |
c3f6f71d JM |
5235 | sals.sals = NULL; |
5236 | sals.nelts = 0; | |
5237 | addr_string = NULL; | |
c3f6f71d | 5238 | |
0101ce28 JJ |
5239 | parse_args.arg_p = &arg; |
5240 | parse_args.sals_p = &sals; | |
5241 | parse_args.addr_string_p = &addr_string; | |
5242 | parse_args.not_found_ptr = ¬_found; | |
5243 | ||
05ff989b AC |
5244 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5245 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5246 | |
5247 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5248 | switch (e.reason) |
0101ce28 | 5249 | { |
05ff989b | 5250 | case RETURN_QUIT: |
9cbc821d | 5251 | exception_print (gdb_stderr, e); |
05ff989b AC |
5252 | return e.reason; |
5253 | case RETURN_ERROR: | |
5254 | switch (e.error) | |
0101ce28 | 5255 | { |
05ff989b AC |
5256 | case NOT_FOUND_ERROR: |
5257 | /* If called to resolve pending breakpoint, just return | |
5258 | error code. */ | |
0101ce28 | 5259 | if (pending_bp) |
05ff989b | 5260 | return e.reason; |
0101ce28 | 5261 | |
9cbc821d | 5262 | exception_print (gdb_stderr, e); |
fa8d40ab | 5263 | |
05ff989b AC |
5264 | /* If pending breakpoint support is turned off, throw |
5265 | error. */ | |
fa8d40ab JJ |
5266 | |
5267 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
315a522e | 5268 | deprecated_throw_reason (RETURN_ERROR); |
fa8d40ab | 5269 | |
05ff989b AC |
5270 | /* If pending breakpoint support is auto query and the user |
5271 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5272 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5273 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
05ff989b | 5274 | return e.reason; |
fa8d40ab | 5275 | |
05ff989b AC |
5276 | /* At this point, either the user was queried about setting |
5277 | a pending breakpoint and selected yes, or pending | |
5278 | breakpoint behavior is on and thus a pending breakpoint | |
5279 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5280 | copy_arg = xstrdup (addr_start); |
5281 | addr_string = ©_arg; | |
5282 | sals.nelts = 1; | |
5283 | sals.sals = &pending_sal; | |
5284 | pending_sal.pc = 0; | |
5285 | pending = 1; | |
05ff989b AC |
5286 | break; |
5287 | default: | |
9cbc821d | 5288 | exception_print (gdb_stderr, e); |
05ff989b | 5289 | return e.reason; |
0101ce28 | 5290 | } |
05ff989b AC |
5291 | default: |
5292 | if (!sals.nelts) | |
5293 | return GDB_RC_FAIL; | |
0101ce28 | 5294 | } |
c3f6f71d JM |
5295 | |
5296 | /* Create a chain of things that always need to be cleaned up. */ | |
5297 | old_chain = make_cleanup (null_cleanup, 0); | |
5298 | ||
0101ce28 JJ |
5299 | if (!pending) |
5300 | { | |
5301 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5302 | make_cleanup (xfree, sals.sals); | |
5303 | ||
5304 | /* Cleanup the addr_string array but not its contents. */ | |
5305 | make_cleanup (xfree, addr_string); | |
5306 | } | |
c3f6f71d JM |
5307 | |
5308 | /* Allocate space for all the cond expressions. */ | |
5309 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5310 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5311 | |
5312 | /* Allocate space for all the cond strings. */ | |
5313 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5314 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5315 | |
5316 | /* ----------------------------- SNIP ----------------------------- | |
5317 | Anything added to the cleanup chain beyond this point is assumed | |
5318 | to be part of a breakpoint. If the breakpoint create succeeds | |
5319 | then the memory is not reclaimed. */ | |
5320 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5321 | ||
5322 | /* Mark the contents of the addr_string for cleanup. These go on | |
5323 | the breakpoint_chain and only occure if the breakpoint create | |
5324 | fails. */ | |
5325 | for (i = 0; i < sals.nelts; i++) | |
5326 | { | |
5327 | if (addr_string[i] != NULL) | |
b8c9b27d | 5328 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5329 | } |
5330 | ||
5331 | /* Resolve all line numbers to PC's and verify that the addresses | |
5332 | are ok for the target. */ | |
0101ce28 JJ |
5333 | if (!pending) |
5334 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5335 | |
5336 | /* Verify that condition can be parsed, before setting any | |
5337 | breakpoints. Allocate a separate condition expression for each | |
5338 | breakpoint. */ | |
5339 | thread = -1; /* No specific thread yet */ | |
0101ce28 | 5340 | if (!pending) |
c3f6f71d | 5341 | { |
0101ce28 | 5342 | for (i = 0; i < sals.nelts; i++) |
c906108c | 5343 | { |
0101ce28 JJ |
5344 | char *tok = arg; |
5345 | while (tok && *tok) | |
c906108c | 5346 | { |
0101ce28 JJ |
5347 | char *end_tok; |
5348 | int toklen; | |
5349 | char *cond_start = NULL; | |
5350 | char *cond_end = NULL; | |
5351 | while (*tok == ' ' || *tok == '\t') | |
5352 | tok++; | |
5353 | ||
5354 | end_tok = tok; | |
5355 | ||
5356 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5357 | end_tok++; | |
5358 | ||
5359 | toklen = end_tok - tok; | |
5360 | ||
5361 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5362 | { | |
5363 | tok = cond_start = end_tok + 1; | |
5364 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), | |
5365 | 0); | |
5366 | make_cleanup (xfree, cond[i]); | |
5367 | cond_end = tok; | |
5368 | cond_string[i] = savestring (cond_start, | |
5369 | cond_end - cond_start); | |
5370 | make_cleanup (xfree, cond_string[i]); | |
5371 | } | |
5372 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5373 | { | |
5374 | char *tmptok; | |
5375 | ||
5376 | tok = end_tok + 1; | |
5377 | tmptok = tok; | |
5378 | thread = strtol (tok, &tok, 0); | |
5379 | if (tok == tmptok) | |
8a3fe4f8 | 5380 | error (_("Junk after thread keyword.")); |
0101ce28 | 5381 | if (!valid_thread_id (thread)) |
8a3fe4f8 | 5382 | error (_("Unknown thread %d."), thread); |
0101ce28 JJ |
5383 | } |
5384 | else | |
8a3fe4f8 | 5385 | error (_("Junk at end of arguments.")); |
c906108c | 5386 | } |
c906108c | 5387 | } |
0101ce28 JJ |
5388 | create_breakpoints (sals, addr_string, cond, cond_string, |
5389 | hardwareflag ? bp_hardware_breakpoint | |
5390 | : bp_breakpoint, | |
5391 | tempflag ? disp_del : disp_donttouch, | |
5392 | thread, ignore_count, from_tty, | |
5393 | pending_bp); | |
c906108c | 5394 | } |
0101ce28 JJ |
5395 | else |
5396 | { | |
5397 | struct symtab_and_line sal; | |
5398 | struct breakpoint *b; | |
5399 | ||
5400 | sal.symtab = NULL; | |
5401 | sal.pc = 0; | |
5402 | ||
5403 | make_cleanup (xfree, copy_arg); | |
5404 | ||
5405 | b = set_raw_breakpoint (sal, hardwareflag ? bp_hardware_breakpoint | |
5406 | : bp_breakpoint); | |
5407 | set_breakpoint_count (breakpoint_count + 1); | |
5408 | b->number = breakpoint_count; | |
5409 | b->cond = *cond; | |
5410 | b->thread = thread; | |
5411 | b->addr_string = *addr_string; | |
5412 | b->cond_string = *cond_string; | |
5413 | b->ignore_count = ignore_count; | |
5414 | b->pending = 1; | |
5415 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
5416 | b->from_tty = from_tty; | |
5417 | b->flag = flag; | |
5418 | mention (b); | |
5419 | } | |
5420 | ||
c3f6f71d | 5421 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5422 | warning (_("Multiple breakpoints were set.\n" |
5423 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5424 | /* That's it. Discard the cleanups for data inserted into the |
5425 | breakpoint. */ | |
5426 | discard_cleanups (breakpoint_chain); | |
5427 | /* But cleanup everything else. */ | |
5428 | do_cleanups (old_chain); | |
0101ce28 JJ |
5429 | |
5430 | return GDB_RC_OK; | |
c3f6f71d | 5431 | } |
c906108c | 5432 | |
c3f6f71d JM |
5433 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5434 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5435 | |
c3f6f71d JM |
5436 | struct captured_breakpoint_args |
5437 | { | |
5438 | char *address; | |
5439 | char *condition; | |
5440 | int hardwareflag; | |
5441 | int tempflag; | |
5442 | int thread; | |
5443 | int ignore_count; | |
5444 | }; | |
5445 | ||
5446 | static int | |
ce43223b | 5447 | do_captured_breakpoint (struct ui_out *uiout, void *data) |
c3f6f71d JM |
5448 | { |
5449 | struct captured_breakpoint_args *args = data; | |
5450 | struct symtabs_and_lines sals; | |
52f0bd74 | 5451 | struct expression **cond; |
c3f6f71d JM |
5452 | struct cleanup *old_chain; |
5453 | struct cleanup *breakpoint_chain = NULL; | |
5454 | int i; | |
5455 | char **addr_string; | |
5456 | char **cond_string; | |
5457 | ||
5458 | char *address_end; | |
5459 | ||
5460 | /* Parse the source and lines spec. Delay check that the expression | |
5461 | didn't contain trailing garbage until after cleanups are in | |
5462 | place. */ | |
5463 | sals.sals = NULL; | |
5464 | sals.nelts = 0; | |
5465 | address_end = args->address; | |
5466 | addr_string = NULL; | |
0101ce28 | 5467 | parse_breakpoint_sals (&address_end, &sals, &addr_string, 0); |
c3f6f71d JM |
5468 | |
5469 | if (!sals.nelts) | |
5470 | return GDB_RC_NONE; | |
5471 | ||
5472 | /* Create a chain of things at always need to be cleaned up. */ | |
5473 | old_chain = make_cleanup (null_cleanup, 0); | |
5474 | ||
5475 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5476 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5477 | |
5478 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5479 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5480 | |
5481 | /* Allocate space for all the cond expressions. */ | |
5482 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5483 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5484 | |
5485 | /* Allocate space for all the cond strings. */ | |
5486 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5487 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5488 | |
5489 | /* ----------------------------- SNIP ----------------------------- | |
5490 | Anything added to the cleanup chain beyond this point is assumed | |
5491 | to be part of a breakpoint. If the breakpoint create goes | |
5492 | through then that memory is not cleaned up. */ | |
5493 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5494 | ||
5495 | /* Mark the contents of the addr_string for cleanup. These go on | |
5496 | the breakpoint_chain and only occure if the breakpoint create | |
5497 | fails. */ | |
c906108c SS |
5498 | for (i = 0; i < sals.nelts; i++) |
5499 | { | |
c3f6f71d | 5500 | if (addr_string[i] != NULL) |
b8c9b27d | 5501 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5502 | } |
5503 | ||
c3f6f71d JM |
5504 | /* Wait until now before checking for garbage at the end of the |
5505 | address. That way cleanups can take care of freeing any | |
5506 | memory. */ | |
5507 | if (*address_end != '\0') | |
8a3fe4f8 | 5508 | error (_("Garbage %s following breakpoint address"), address_end); |
c3f6f71d JM |
5509 | |
5510 | /* Resolve all line numbers to PC's. */ | |
5511 | breakpoint_sals_to_pc (&sals, args->address); | |
5512 | ||
5513 | /* Verify that conditions can be parsed, before setting any | |
5514 | breakpoints. */ | |
5515 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5516 | { |
c3f6f71d JM |
5517 | if (args->condition != NULL) |
5518 | { | |
5519 | char *tok = args->condition; | |
5520 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5521 | if (*tok != '\0') | |
8a3fe4f8 | 5522 | error (_("Garbage %s follows condition"), tok); |
b8c9b27d | 5523 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5524 | cond_string[i] = xstrdup (args->condition); |
5525 | } | |
c906108c | 5526 | } |
c3f6f71d JM |
5527 | |
5528 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5529 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5530 | args->tempflag ? disp_del : disp_donttouch, |
0101ce28 JJ |
5531 | args->thread, args->ignore_count, 0/*from-tty*/, |
5532 | NULL/*pending_bp*/); | |
c3f6f71d JM |
5533 | |
5534 | /* That's it. Discard the cleanups for data inserted into the | |
5535 | breakpoint. */ | |
5536 | discard_cleanups (breakpoint_chain); | |
5537 | /* But cleanup everything else. */ | |
c906108c | 5538 | do_cleanups (old_chain); |
c3f6f71d | 5539 | return GDB_RC_OK; |
c906108c SS |
5540 | } |
5541 | ||
c3f6f71d JM |
5542 | enum gdb_rc |
5543 | gdb_breakpoint (char *address, char *condition, | |
5544 | int hardwareflag, int tempflag, | |
ce43223b AC |
5545 | int thread, int ignore_count, |
5546 | char **error_message) | |
c3f6f71d JM |
5547 | { |
5548 | struct captured_breakpoint_args args; | |
5549 | args.address = address; | |
5550 | args.condition = condition; | |
5551 | args.hardwareflag = hardwareflag; | |
5552 | args.tempflag = tempflag; | |
5553 | args.thread = thread; | |
5554 | args.ignore_count = ignore_count; | |
ce43223b | 5555 | return catch_exceptions_with_msg (uiout, do_captured_breakpoint, &args, |
1c3c7ee7 | 5556 | error_message, RETURN_MASK_ALL); |
c3f6f71d JM |
5557 | } |
5558 | ||
5559 | ||
c906108c SS |
5560 | /* Helper function for break_command_1 and disassemble_command. */ |
5561 | ||
5562 | void | |
fba45db2 | 5563 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5564 | { |
5565 | CORE_ADDR pc; | |
5566 | ||
5567 | if (sal->pc == 0 && sal->symtab != NULL) | |
5568 | { | |
5569 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5570 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5571 | sal->line, sal->symtab->filename); |
5572 | sal->pc = pc; | |
5573 | } | |
5574 | ||
5575 | if (sal->section == 0 && sal->symtab != NULL) | |
5576 | { | |
5577 | struct blockvector *bv; | |
c5aa993b JM |
5578 | struct block *b; |
5579 | struct symbol *sym; | |
5580 | int index; | |
c906108c | 5581 | |
c5aa993b | 5582 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5583 | if (bv != NULL) |
5584 | { | |
c5aa993b | 5585 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5586 | sym = block_function (b); |
5587 | if (sym != NULL) | |
5588 | { | |
5589 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5590 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5591 | } | |
5592 | else | |
5593 | { | |
5594 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5595 | have to look harder. This case can be executed if we have |
5596 | line numbers but no functions (as can happen in assembly | |
5597 | source). */ | |
c906108c | 5598 | |
c5aa993b | 5599 | struct minimal_symbol *msym; |
c906108c SS |
5600 | |
5601 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5602 | if (msym) | |
5603 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5604 | } | |
5605 | } | |
5606 | } | |
5607 | } | |
5608 | ||
5609 | void | |
fba45db2 | 5610 | break_command (char *arg, int from_tty) |
c906108c | 5611 | { |
0101ce28 | 5612 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5613 | } |
5614 | ||
c906108c | 5615 | void |
fba45db2 | 5616 | tbreak_command (char *arg, int from_tty) |
c906108c | 5617 | { |
0101ce28 | 5618 | break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL); |
c906108c SS |
5619 | } |
5620 | ||
c906108c | 5621 | static void |
fba45db2 | 5622 | hbreak_command (char *arg, int from_tty) |
c906108c | 5623 | { |
0101ce28 | 5624 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty, NULL); |
c906108c SS |
5625 | } |
5626 | ||
5627 | static void | |
fba45db2 | 5628 | thbreak_command (char *arg, int from_tty) |
c906108c | 5629 | { |
0101ce28 | 5630 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty, NULL); |
c906108c SS |
5631 | } |
5632 | ||
5633 | static void | |
fba45db2 | 5634 | stop_command (char *arg, int from_tty) |
c906108c | 5635 | { |
a3f17187 | 5636 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5637 | Usage: stop in <function | address>\n\ |
a3f17187 | 5638 | stop at <line>\n")); |
c906108c SS |
5639 | } |
5640 | ||
5641 | static void | |
fba45db2 | 5642 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5643 | { |
5644 | int badInput = 0; | |
5645 | ||
c5aa993b | 5646 | if (arg == (char *) NULL) |
c906108c SS |
5647 | badInput = 1; |
5648 | else if (*arg != '*') | |
5649 | { | |
5650 | char *argptr = arg; | |
5651 | int hasColon = 0; | |
5652 | ||
53a5351d JM |
5653 | /* look for a ':'. If this is a line number specification, then |
5654 | say it is bad, otherwise, it should be an address or | |
5655 | function/method name */ | |
c906108c | 5656 | while (*argptr && !hasColon) |
c5aa993b JM |
5657 | { |
5658 | hasColon = (*argptr == ':'); | |
5659 | argptr++; | |
5660 | } | |
c906108c SS |
5661 | |
5662 | if (hasColon) | |
c5aa993b | 5663 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5664 | else |
c5aa993b | 5665 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5666 | } |
5667 | ||
5668 | if (badInput) | |
a3f17187 | 5669 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5670 | else |
0101ce28 | 5671 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5672 | } |
5673 | ||
5674 | static void | |
fba45db2 | 5675 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5676 | { |
5677 | int badInput = 0; | |
5678 | ||
c5aa993b | 5679 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5680 | badInput = 1; |
5681 | else | |
5682 | { | |
5683 | char *argptr = arg; | |
5684 | int hasColon = 0; | |
5685 | ||
5686 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5687 | it is probably a line number. */ |
c906108c | 5688 | while (*argptr && !hasColon) |
c5aa993b JM |
5689 | { |
5690 | hasColon = (*argptr == ':'); | |
5691 | argptr++; | |
5692 | } | |
c906108c SS |
5693 | |
5694 | if (hasColon) | |
c5aa993b | 5695 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5696 | else |
c5aa993b | 5697 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5698 | } |
5699 | ||
5700 | if (badInput) | |
a3f17187 | 5701 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5702 | else |
0101ce28 | 5703 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5704 | } |
5705 | ||
53a5351d JM |
5706 | /* accessflag: hw_write: watch write, |
5707 | hw_read: watch read, | |
5708 | hw_access: watch access (read or write) */ | |
c906108c | 5709 | static void |
fba45db2 | 5710 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5711 | { |
5712 | struct breakpoint *b; | |
5713 | struct symtab_and_line sal; | |
5714 | struct expression *exp; | |
5715 | struct block *exp_valid_block; | |
5716 | struct value *val, *mark; | |
5717 | struct frame_info *frame; | |
5718 | struct frame_info *prev_frame = NULL; | |
5719 | char *exp_start = NULL; | |
5720 | char *exp_end = NULL; | |
5721 | char *tok, *end_tok; | |
5722 | int toklen; | |
5723 | char *cond_start = NULL; | |
5724 | char *cond_end = NULL; | |
5725 | struct expression *cond = NULL; | |
5726 | int i, other_type_used, target_resources_ok = 0; | |
5727 | enum bptype bp_type; | |
5728 | int mem_cnt = 0; | |
5729 | ||
fe39c653 | 5730 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5731 | |
c906108c SS |
5732 | /* Parse arguments. */ |
5733 | innermost_block = NULL; | |
5734 | exp_start = arg; | |
5735 | exp = parse_exp_1 (&arg, 0, 0); | |
5736 | exp_end = arg; | |
5737 | exp_valid_block = innermost_block; | |
5738 | mark = value_mark (); | |
5739 | val = evaluate_expression (exp); | |
5740 | release_value (val); | |
d69fe07e | 5741 | if (value_lazy (val)) |
c906108c SS |
5742 | value_fetch_lazy (val); |
5743 | ||
5744 | tok = arg; | |
5745 | while (*tok == ' ' || *tok == '\t') | |
5746 | tok++; | |
5747 | end_tok = tok; | |
5748 | ||
5749 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5750 | end_tok++; | |
5751 | ||
5752 | toklen = end_tok - tok; | |
5753 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5754 | { | |
5755 | tok = cond_start = end_tok + 1; | |
5756 | cond = parse_exp_1 (&tok, 0, 0); | |
5757 | cond_end = tok; | |
5758 | } | |
5759 | if (*tok) | |
8a3fe4f8 | 5760 | error (_("Junk at end of command.")); |
c906108c | 5761 | |
53a5351d | 5762 | if (accessflag == hw_read) |
c5aa993b | 5763 | bp_type = bp_read_watchpoint; |
53a5351d | 5764 | else if (accessflag == hw_access) |
c5aa993b JM |
5765 | bp_type = bp_access_watchpoint; |
5766 | else | |
5767 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5768 | |
5769 | mem_cnt = can_use_hardware_watchpoint (val); | |
5770 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 5771 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
5772 | if (mem_cnt != 0) |
5773 | { | |
5774 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5775 | target_resources_ok = |
5776 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5777 | other_type_used); | |
c5aa993b | 5778 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5779 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 5780 | |
c5aa993b | 5781 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5782 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 5783 | } |
c906108c SS |
5784 | |
5785 | #if defined(HPUXHPPA) | |
c5aa993b | 5786 | /* On HP-UX if you set a h/w |
c906108c SS |
5787 | watchpoint before the "run" command, the inferior dies with a e.g., |
5788 | SIGILL once you start it. I initially believed this was due to a | |
5789 | bad interaction between page protection traps and the initial | |
5790 | startup sequence by the dynamic linker. | |
5791 | ||
5792 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5793 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5794 | yet, which forced slow watches before a "run" or "attach", and it |
5795 | still fails somewhere in the startup code. | |
5796 | ||
5797 | Until I figure out what's happening, I'm disallowing watches altogether | |
5798 | before the "run" or "attach" command. We'll tell the user they must | |
5799 | set watches after getting the program started. */ | |
c5aa993b | 5800 | if (!target_has_execution) |
c906108c | 5801 | { |
8a3fe4f8 | 5802 | warning (_("can't do that without a running program; try \"break main\"), \"run\" first"); |
c906108c SS |
5803 | return; |
5804 | } | |
5805 | #endif /* HPUXHPPA */ | |
c5aa993b | 5806 | |
4d28f7a8 KB |
5807 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5808 | watchpoint could not be set. */ | |
5809 | if (!mem_cnt || target_resources_ok <= 0) | |
5810 | bp_type = bp_watchpoint; | |
5811 | ||
c906108c | 5812 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5813 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5814 | set_breakpoint_count (breakpoint_count + 1); |
5815 | b->number = breakpoint_count; | |
b5de0fa7 | 5816 | b->disposition = disp_donttouch; |
c906108c SS |
5817 | b->exp = exp; |
5818 | b->exp_valid_block = exp_valid_block; | |
5819 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5820 | b->val = val; | |
5821 | b->cond = cond; | |
5822 | if (cond_start) | |
5823 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5824 | else | |
5825 | b->cond_string = 0; | |
c5aa993b | 5826 | |
c906108c SS |
5827 | frame = block_innermost_frame (exp_valid_block); |
5828 | if (frame) | |
5829 | { | |
5830 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5831 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5832 | } |
5833 | else | |
101dcfbe AC |
5834 | { |
5835 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5836 | } | |
c906108c | 5837 | |
c906108c SS |
5838 | /* If the expression is "local", then set up a "watchpoint scope" |
5839 | breakpoint at the point where we've left the scope of the watchpoint | |
5840 | expression. */ | |
5841 | if (innermost_block) | |
5842 | { | |
5843 | if (prev_frame) | |
5844 | { | |
5845 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5846 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5847 | bp_watchpoint_scope); | |
c906108c | 5848 | |
b5de0fa7 | 5849 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5850 | |
5851 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5852 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5853 | |
5854 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5855 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5856 | |
5857 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5858 | scope_breakpoint->loc->requested_address |
5859 | = get_frame_pc (prev_frame); | |
5860 | scope_breakpoint->loc->address | |
88f7da05 KB |
5861 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, |
5862 | scope_breakpoint->type); | |
c906108c SS |
5863 | |
5864 | /* The scope breakpoint is related to the watchpoint. We | |
5865 | will need to act on them together. */ | |
5866 | b->related_breakpoint = scope_breakpoint; | |
5867 | } | |
5868 | } | |
5869 | value_free_to_mark (mark); | |
5870 | mention (b); | |
5871 | } | |
5872 | ||
5873 | /* Return count of locations need to be watched and can be handled | |
5874 | in hardware. If the watchpoint can not be handled | |
5875 | in hardware return zero. */ | |
5876 | ||
c906108c | 5877 | static int |
fba45db2 | 5878 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5879 | { |
5880 | int found_memory_cnt = 0; | |
2e70b7b9 | 5881 | struct value *head = v; |
c906108c SS |
5882 | |
5883 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5884 | if (!can_use_hw_watchpoints) |
c906108c | 5885 | return 0; |
c5aa993b | 5886 | |
5c44784c JM |
5887 | /* Make sure that the value of the expression depends only upon |
5888 | memory contents, and values computed from them within GDB. If we | |
5889 | find any register references or function calls, we can't use a | |
5890 | hardware watchpoint. | |
5891 | ||
5892 | The idea here is that evaluating an expression generates a series | |
5893 | of values, one holding the value of every subexpression. (The | |
5894 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5895 | a*b+c.) GDB's values hold almost enough information to establish | |
5896 | the criteria given above --- they identify memory lvalues, | |
5897 | register lvalues, computed values, etcetera. So we can evaluate | |
5898 | the expression, and then scan the chain of values that leaves | |
5899 | behind to decide whether we can detect any possible change to the | |
5900 | expression's final value using only hardware watchpoints. | |
5901 | ||
5902 | However, I don't think that the values returned by inferior | |
5903 | function calls are special in any way. So this function may not | |
5904 | notice that an expression involving an inferior function call | |
5905 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 5906 | for (; v; v = value_next (v)) |
c906108c | 5907 | { |
5c44784c | 5908 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5909 | { |
d69fe07e | 5910 | if (value_lazy (v)) |
5c44784c JM |
5911 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
5912 | we either just used its address (e.g., `a' in `a.b') or | |
5913 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5914 | ; | |
53a5351d | 5915 | else |
5c44784c JM |
5916 | { |
5917 | /* Ahh, memory we actually used! Check if we can cover | |
5918 | it with hardware watchpoints. */ | |
df407dfe | 5919 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
5920 | |
5921 | /* We only watch structs and arrays if user asked for it | |
5922 | explicitly, never if they just happen to appear in a | |
5923 | middle of some value chain. */ | |
5924 | if (v == head | |
5925 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5926 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5927 | { | |
df407dfe AC |
5928 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
5929 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
5930 | |
5931 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5932 | return 0; | |
5933 | else | |
5934 | found_memory_cnt++; | |
5935 | } | |
5c44784c | 5936 | } |
c5aa993b | 5937 | } |
5086187c AC |
5938 | else if (VALUE_LVAL (v) != not_lval |
5939 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 5940 | return 0; /* ??? What does this represent? */ |
5086187c | 5941 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 5942 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
5943 | } |
5944 | ||
5945 | /* The expression itself looks suitable for using a hardware | |
5946 | watchpoint, but give the target machine a chance to reject it. */ | |
5947 | return found_memory_cnt; | |
5948 | } | |
5949 | ||
8b93c638 | 5950 | void |
fba45db2 | 5951 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5952 | { |
5953 | watch_command (arg, from_tty); | |
5954 | } | |
8926118c | 5955 | |
c5aa993b | 5956 | static void |
fba45db2 | 5957 | watch_command (char *arg, int from_tty) |
c906108c | 5958 | { |
53a5351d | 5959 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5960 | } |
5961 | ||
8b93c638 | 5962 | void |
fba45db2 | 5963 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5964 | { |
5965 | rwatch_command (arg, from_tty); | |
5966 | } | |
8926118c | 5967 | |
c5aa993b | 5968 | static void |
fba45db2 | 5969 | rwatch_command (char *arg, int from_tty) |
c906108c | 5970 | { |
53a5351d | 5971 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5972 | } |
5973 | ||
8b93c638 | 5974 | void |
fba45db2 | 5975 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5976 | { |
5977 | awatch_command (arg, from_tty); | |
5978 | } | |
8926118c | 5979 | |
c5aa993b | 5980 | static void |
fba45db2 | 5981 | awatch_command (char *arg, int from_tty) |
c906108c | 5982 | { |
53a5351d | 5983 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5984 | } |
c906108c | 5985 | \f |
c5aa993b | 5986 | |
43ff13b4 | 5987 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5988 | because it uses the mechanisms of breakpoints. */ |
5989 | ||
43ff13b4 JM |
5990 | /* This function is called by fetch_inferior_event via the |
5991 | cmd_continuation pointer, to complete the until command. It takes | |
5992 | care of cleaning up the temporary breakpoints set up by the until | |
5993 | command. */ | |
c2c6d25f JM |
5994 | static void |
5995 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5996 | { |
0d06e24b JM |
5997 | struct cleanup *cleanups; |
5998 | ||
57e687d9 | 5999 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 6000 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
6001 | } |
6002 | ||
c906108c | 6003 | void |
ae66c1fc | 6004 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6005 | { |
6006 | struct symtabs_and_lines sals; | |
6007 | struct symtab_and_line sal; | |
6e7f8b9c | 6008 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
6009 | struct breakpoint *breakpoint; |
6010 | struct cleanup *old_chain; | |
0d06e24b JM |
6011 | struct continuation_arg *arg1; |
6012 | ||
c906108c SS |
6013 | |
6014 | clear_proceed_status (); | |
6015 | ||
6016 | /* Set a breakpoint where the user wants it and at return from | |
6017 | this function */ | |
c5aa993b | 6018 | |
c906108c SS |
6019 | if (default_breakpoint_valid) |
6020 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6021 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6022 | else |
53a5351d | 6023 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6024 | 0, (char ***) NULL, NULL); |
c5aa993b | 6025 | |
c906108c | 6026 | if (sals.nelts != 1) |
8a3fe4f8 | 6027 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6028 | |
c906108c | 6029 | sal = sals.sals[0]; |
b8c9b27d | 6030 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6031 | |
c906108c | 6032 | if (*arg) |
8a3fe4f8 | 6033 | error (_("Junk at end of arguments.")); |
c5aa993b | 6034 | |
c906108c | 6035 | resolve_sal_pc (&sal); |
c5aa993b | 6036 | |
ae66c1fc EZ |
6037 | if (anywhere) |
6038 | /* If the user told us to continue until a specified location, | |
6039 | we don't specify a frame at which we need to stop. */ | |
6040 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6041 | else | |
6042 | /* Otherwise, specify the current frame, because we want to stop only | |
6043 | at the very same frame. */ | |
6044 | breakpoint = set_momentary_breakpoint (sal, | |
6045 | get_frame_id (deprecated_selected_frame), | |
6046 | bp_until); | |
c5aa993b | 6047 | |
362646f5 | 6048 | if (!target_can_async_p ()) |
4d6140d9 | 6049 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6050 | else |
4d6140d9 | 6051 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
6052 | |
6053 | /* If we are running asynchronously, and the target supports async | |
6054 | execution, we are not waiting for the target to stop, in the call | |
6055 | tp proceed, below. This means that we cannot delete the | |
6056 | brekpoints until the target has actually stopped. The only place | |
6057 | where we get a chance to do that is in fetch_inferior_event, so | |
6058 | we must set things up for that. */ | |
6059 | ||
362646f5 | 6060 | if (target_can_async_p ()) |
43ff13b4 | 6061 | { |
0d06e24b JM |
6062 | /* In this case the arg for the continuation is just the point |
6063 | in the exec_cleanups chain from where to start doing | |
6064 | cleanups, because all the continuation does is the cleanups in | |
6065 | the exec_cleanup_chain. */ | |
6066 | arg1 = | |
6067 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
6068 | arg1->next = NULL; |
6069 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
6070 | |
6071 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 6072 | } |
c906108c | 6073 | |
ae66c1fc EZ |
6074 | /* Keep within the current frame, or in frames called by the current |
6075 | one. */ | |
c906108c SS |
6076 | if (prev_frame) |
6077 | { | |
30f7db39 AC |
6078 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6079 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
6080 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6081 | bp_until); | |
362646f5 | 6082 | if (!target_can_async_p ()) |
4d6140d9 | 6083 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6084 | else |
4d6140d9 | 6085 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6086 | } |
c5aa993b | 6087 | |
c906108c | 6088 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
6089 | /* Do the cleanups now, anly if we are not running asynchronously, |
6090 | of if we are, but the target is still synchronous. */ | |
362646f5 | 6091 | if (!target_can_async_p ()) |
c5aa993b | 6092 | do_cleanups (old_chain); |
c906108c | 6093 | } |
ae66c1fc | 6094 | |
c906108c | 6095 | static void |
fba45db2 | 6096 | ep_skip_leading_whitespace (char **s) |
c906108c | 6097 | { |
c5aa993b JM |
6098 | if ((s == NULL) || (*s == NULL)) |
6099 | return; | |
6100 | while (isspace (**s)) | |
6101 | *s += 1; | |
c906108c | 6102 | } |
c5aa993b | 6103 | |
c906108c SS |
6104 | /* This function examines a string, and attempts to find a token |
6105 | that might be an event name in the leading characters. If a | |
6106 | possible match is found, a pointer to the last character of | |
6107 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6108 | |
c906108c | 6109 | static char * |
fba45db2 | 6110 | ep_find_event_name_end (char *arg) |
c906108c | 6111 | { |
c5aa993b JM |
6112 | char *s = arg; |
6113 | char *event_name_end = NULL; | |
6114 | ||
c906108c SS |
6115 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6116 | if (arg == NULL) | |
6117 | return NULL; | |
c5aa993b | 6118 | |
c906108c | 6119 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6120 | Basically, we're looking for alphanumerics and underscores; |
6121 | anything else delimites the token. */ | |
c906108c SS |
6122 | while (*s != '\0') |
6123 | { | |
c5aa993b JM |
6124 | if (!isalnum (*s) && (*s != '_')) |
6125 | break; | |
c906108c SS |
6126 | event_name_end = s; |
6127 | s++; | |
6128 | } | |
c5aa993b | 6129 | |
c906108c SS |
6130 | return event_name_end; |
6131 | } | |
6132 | ||
c5aa993b | 6133 | |
c906108c SS |
6134 | /* This function attempts to parse an optional "if <cond>" clause |
6135 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6136 | |
c906108c SS |
6137 | Else, it returns a pointer to the condition string. (It does not |
6138 | attempt to evaluate the string against a particular block.) And, | |
6139 | it updates arg to point to the first character following the parsed | |
6140 | if clause in the arg string. */ | |
53a5351d | 6141 | |
c906108c | 6142 | static char * |
fba45db2 | 6143 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6144 | { |
c5aa993b JM |
6145 | char *cond_string; |
6146 | ||
6147 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6148 | return NULL; |
c5aa993b | 6149 | |
c906108c SS |
6150 | /* Skip the "if" keyword. */ |
6151 | (*arg) += 2; | |
c5aa993b | 6152 | |
c906108c SS |
6153 | /* Skip any extra leading whitespace, and record the start of the |
6154 | condition string. */ | |
6155 | ep_skip_leading_whitespace (arg); | |
6156 | cond_string = *arg; | |
c5aa993b | 6157 | |
c906108c SS |
6158 | /* Assume that the condition occupies the remainder of the arg string. */ |
6159 | (*arg) += strlen (cond_string); | |
c5aa993b | 6160 | |
c906108c SS |
6161 | return cond_string; |
6162 | } | |
c5aa993b | 6163 | |
c906108c SS |
6164 | /* This function attempts to parse an optional filename from the arg |
6165 | string. If one is not found, it returns NULL. | |
c5aa993b | 6166 | |
c906108c SS |
6167 | Else, it returns a pointer to the parsed filename. (This function |
6168 | makes no attempt to verify that a file of that name exists, or is | |
6169 | accessible.) And, it updates arg to point to the first character | |
6170 | following the parsed filename in the arg string. | |
c5aa993b | 6171 | |
c906108c SS |
6172 | Note that clients needing to preserve the returned filename for |
6173 | future access should copy it to their own buffers. */ | |
6174 | static char * | |
fba45db2 | 6175 | ep_parse_optional_filename (char **arg) |
c906108c | 6176 | { |
c5aa993b JM |
6177 | static char filename[1024]; |
6178 | char *arg_p = *arg; | |
6179 | int i; | |
6180 | char c; | |
6181 | ||
c906108c SS |
6182 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6183 | return NULL; | |
c5aa993b JM |
6184 | |
6185 | for (i = 0;; i++) | |
c906108c SS |
6186 | { |
6187 | c = *arg_p; | |
6188 | if (isspace (c)) | |
c5aa993b | 6189 | c = '\0'; |
c906108c SS |
6190 | filename[i] = c; |
6191 | if (c == '\0') | |
c5aa993b | 6192 | break; |
c906108c SS |
6193 | arg_p++; |
6194 | } | |
6195 | *arg = arg_p; | |
c5aa993b | 6196 | |
c906108c SS |
6197 | return filename; |
6198 | } | |
c5aa993b | 6199 | |
c906108c SS |
6200 | /* Commands to deal with catching events, such as signals, exceptions, |
6201 | process start/exit, etc. */ | |
c5aa993b JM |
6202 | |
6203 | typedef enum | |
6204 | { | |
6205 | catch_fork, catch_vfork | |
6206 | } | |
6207 | catch_fork_kind; | |
6208 | ||
c906108c | 6209 | static void |
fba45db2 KB |
6210 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6211 | int from_tty) | |
c906108c | 6212 | { |
c5aa993b JM |
6213 | char *cond_string = NULL; |
6214 | ||
c906108c | 6215 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6216 | |
c906108c | 6217 | /* The allowed syntax is: |
c5aa993b JM |
6218 | catch [v]fork |
6219 | catch [v]fork if <cond> | |
6220 | ||
c906108c SS |
6221 | First, check if there's an if clause. */ |
6222 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6223 | |
c906108c | 6224 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6225 | error (_("Junk at end of arguments.")); |
c5aa993b | 6226 | |
c906108c SS |
6227 | /* If this target supports it, create a fork or vfork catchpoint |
6228 | and enable reporting of such events. */ | |
c5aa993b JM |
6229 | switch (fork_kind) |
6230 | { | |
6231 | case catch_fork: | |
c906108c SS |
6232 | create_fork_event_catchpoint (tempflag, cond_string); |
6233 | break; | |
c5aa993b | 6234 | case catch_vfork: |
c906108c SS |
6235 | create_vfork_event_catchpoint (tempflag, cond_string); |
6236 | break; | |
c5aa993b | 6237 | default: |
8a3fe4f8 | 6238 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6239 | break; |
c5aa993b | 6240 | } |
c906108c SS |
6241 | } |
6242 | ||
6243 | static void | |
fba45db2 | 6244 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6245 | { |
c5aa993b | 6246 | char *cond_string = NULL; |
c906108c SS |
6247 | |
6248 | ep_skip_leading_whitespace (&arg); | |
6249 | ||
6250 | /* The allowed syntax is: | |
c5aa993b JM |
6251 | catch exec |
6252 | catch exec if <cond> | |
c906108c SS |
6253 | |
6254 | First, check if there's an if clause. */ | |
6255 | cond_string = ep_parse_optional_if_clause (&arg); | |
6256 | ||
6257 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6258 | error (_("Junk at end of arguments.")); |
c906108c SS |
6259 | |
6260 | /* If this target supports it, create an exec catchpoint | |
6261 | and enable reporting of such events. */ | |
6262 | create_exec_event_catchpoint (tempflag, cond_string); | |
6263 | } | |
c5aa993b | 6264 | |
c906108c | 6265 | static void |
fba45db2 | 6266 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6267 | { |
c5aa993b JM |
6268 | char *dll_pathname = NULL; |
6269 | char *cond_string = NULL; | |
6270 | ||
c906108c | 6271 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6272 | |
c906108c | 6273 | /* The allowed syntax is: |
c5aa993b JM |
6274 | catch load |
6275 | catch load if <cond> | |
6276 | catch load <filename> | |
6277 | catch load <filename> if <cond> | |
6278 | ||
c906108c SS |
6279 | The user is not allowed to specify the <filename> after an |
6280 | if clause. | |
c5aa993b | 6281 | |
c906108c | 6282 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6283 | |
c906108c SS |
6284 | First, check if there's an if clause. If so, then there |
6285 | cannot be a filename. */ | |
6286 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6287 | |
c906108c SS |
6288 | /* If there was an if clause, then there cannot be a filename. |
6289 | Else, there might be a filename and an if clause. */ | |
6290 | if (cond_string == NULL) | |
6291 | { | |
6292 | dll_pathname = ep_parse_optional_filename (&arg); | |
6293 | ep_skip_leading_whitespace (&arg); | |
6294 | cond_string = ep_parse_optional_if_clause (&arg); | |
6295 | } | |
c5aa993b | 6296 | |
c906108c | 6297 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6298 | error (_("Junk at end of arguments.")); |
c5aa993b | 6299 | |
c906108c SS |
6300 | /* Create a load breakpoint that only triggers when a load of |
6301 | the specified dll (or any dll, if no pathname was specified) | |
6302 | occurs. */ | |
39f77062 | 6303 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6304 | dll_pathname, cond_string); |
c906108c | 6305 | } |
c5aa993b | 6306 | |
c906108c | 6307 | static void |
fba45db2 | 6308 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6309 | { |
c5aa993b JM |
6310 | char *dll_pathname = NULL; |
6311 | char *cond_string = NULL; | |
6312 | ||
c906108c | 6313 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6314 | |
c906108c | 6315 | /* The allowed syntax is: |
c5aa993b JM |
6316 | catch unload |
6317 | catch unload if <cond> | |
6318 | catch unload <filename> | |
6319 | catch unload <filename> if <cond> | |
6320 | ||
c906108c SS |
6321 | The user is not allowed to specify the <filename> after an |
6322 | if clause. | |
c5aa993b | 6323 | |
c906108c | 6324 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6325 | |
c906108c SS |
6326 | First, check if there's an if clause. If so, then there |
6327 | cannot be a filename. */ | |
6328 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6329 | |
c906108c SS |
6330 | /* If there was an if clause, then there cannot be a filename. |
6331 | Else, there might be a filename and an if clause. */ | |
6332 | if (cond_string == NULL) | |
6333 | { | |
6334 | dll_pathname = ep_parse_optional_filename (&arg); | |
6335 | ep_skip_leading_whitespace (&arg); | |
6336 | cond_string = ep_parse_optional_if_clause (&arg); | |
6337 | } | |
c5aa993b | 6338 | |
c906108c | 6339 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6340 | error (_("Junk at end of arguments.")); |
c5aa993b | 6341 | |
c906108c SS |
6342 | /* Create an unload breakpoint that only triggers when an unload of |
6343 | the specified dll (or any dll, if no pathname was specified) | |
6344 | occurs. */ | |
39f77062 | 6345 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6346 | dll_pathname, cond_string); |
c906108c | 6347 | } |
c906108c SS |
6348 | |
6349 | /* Commands to deal with catching exceptions. */ | |
6350 | ||
6351 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6352 | exception event callback */ |
c906108c SS |
6353 | |
6354 | static void | |
fba45db2 KB |
6355 | create_exception_catchpoint (int tempflag, char *cond_string, |
6356 | enum exception_event_kind ex_event, | |
6357 | struct symtab_and_line *sal) | |
c906108c | 6358 | { |
c5aa993b | 6359 | struct breakpoint *b; |
c5aa993b | 6360 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6361 | enum bptype bptype; |
c906108c | 6362 | |
c5aa993b | 6363 | if (!sal) /* no exception support? */ |
c906108c SS |
6364 | return; |
6365 | ||
c906108c SS |
6366 | switch (ex_event) |
6367 | { | |
c5aa993b | 6368 | case EX_EVENT_THROW: |
4d28f7a8 | 6369 | bptype = bp_catch_throw; |
c5aa993b JM |
6370 | break; |
6371 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6372 | bptype = bp_catch_catch; |
c5aa993b JM |
6373 | break; |
6374 | default: /* error condition */ | |
8a3fe4f8 | 6375 | error (_("Internal error -- invalid catchpoint kind")); |
c906108c | 6376 | } |
4d28f7a8 KB |
6377 | |
6378 | b = set_raw_breakpoint (*sal, bptype); | |
6379 | set_breakpoint_count (breakpoint_count + 1); | |
6380 | b->number = breakpoint_count; | |
6381 | b->cond = NULL; | |
6382 | b->cond_string = (cond_string == NULL) ? | |
6383 | NULL : savestring (cond_string, strlen (cond_string)); | |
6384 | b->thread = thread; | |
6385 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6386 | b->enable_state = bp_enabled; |
6387 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6388 | mention (b); |
6389 | } | |
6390 | ||
3086aeae DJ |
6391 | static enum print_stop_action |
6392 | print_exception_catchpoint (struct breakpoint *b) | |
6393 | { | |
6394 | annotate_catchpoint (b->number); | |
6395 | ||
6396 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6397 | printf_filtered (_("\nCatchpoint %d (exception thrown)\n"), |
3086aeae DJ |
6398 | b->number); |
6399 | else | |
a3f17187 | 6400 | printf_filtered (_("\nCatchpoint %d (exception caught)\n"), |
3086aeae DJ |
6401 | b->number); |
6402 | ||
6403 | return PRINT_SRC_AND_LOC; | |
6404 | } | |
6405 | ||
6406 | static void | |
6407 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6408 | { | |
6409 | if (addressprint) | |
6410 | { | |
6411 | annotate_field (4); | |
5cab636d | 6412 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6413 | } |
6414 | annotate_field (5); | |
5cab636d | 6415 | *last_addr = b->loc->address; |
3086aeae DJ |
6416 | if (strstr (b->addr_string, "throw") != NULL) |
6417 | ui_out_field_string (uiout, "what", "exception throw"); | |
6418 | else | |
6419 | ui_out_field_string (uiout, "what", "exception catch"); | |
6420 | } | |
6421 | ||
6422 | static void | |
6423 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6424 | { | |
6425 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6426 | printf_filtered (_("Catchpoint %d (throw)"), b->number); |
3086aeae | 6427 | else |
a3f17187 | 6428 | printf_filtered (_("Catchpoint %d (catch)"), b->number); |
3086aeae DJ |
6429 | } |
6430 | ||
6431 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6432 | print_exception_catchpoint, | |
6433 | print_one_exception_catchpoint, | |
6434 | print_mention_exception_catchpoint | |
6435 | }; | |
6436 | ||
6437 | static int | |
6438 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6439 | enum exception_event_kind ex_event, int from_tty) | |
6440 | { | |
6441 | char *trigger_func_name, *nameptr; | |
6442 | struct symtabs_and_lines sals; | |
6443 | struct breakpoint *b; | |
6444 | ||
6445 | if (ex_event == EX_EVENT_CATCH) | |
6446 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6447 | else | |
6448 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6449 | ||
6450 | nameptr = trigger_func_name; | |
68219205 | 6451 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6452 | if (sals.nelts == 0) |
6453 | { | |
b59661bd | 6454 | xfree (trigger_func_name); |
3086aeae DJ |
6455 | return 0; |
6456 | } | |
6457 | ||
6458 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6459 | set_breakpoint_count (breakpoint_count + 1); | |
6460 | b->number = breakpoint_count; | |
6461 | b->cond = NULL; | |
6462 | b->cond_string = (cond_string == NULL) ? | |
6463 | NULL : savestring (cond_string, strlen (cond_string)); | |
6464 | b->thread = -1; | |
6465 | b->addr_string = trigger_func_name; | |
6466 | b->enable_state = bp_enabled; | |
6467 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6468 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6469 | ||
b59661bd | 6470 | xfree (sals.sals); |
3086aeae DJ |
6471 | mention (b); |
6472 | return 1; | |
6473 | } | |
6474 | ||
c5aa993b | 6475 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6476 | |
6477 | static void | |
fba45db2 KB |
6478 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6479 | int tempflag, int from_tty) | |
c906108c | 6480 | { |
c5aa993b JM |
6481 | char *cond_string = NULL; |
6482 | struct symtab_and_line *sal = NULL; | |
6483 | ||
c906108c | 6484 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6485 | |
c906108c SS |
6486 | cond_string = ep_parse_optional_if_clause (&arg); |
6487 | ||
6488 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6489 | error (_("Junk at end of arguments.")); |
c906108c SS |
6490 | |
6491 | if ((ex_event != EX_EVENT_THROW) && | |
6492 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6493 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6494 | |
3086aeae DJ |
6495 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6496 | return; | |
6497 | ||
c906108c SS |
6498 | /* See if we can find a callback routine */ |
6499 | sal = target_enable_exception_callback (ex_event, 1); | |
6500 | ||
c5aa993b | 6501 | if (sal) |
c906108c SS |
6502 | { |
6503 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6504 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6505 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6506 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6507 | else |
53a5351d | 6508 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6509 | } |
c5aa993b | 6510 | |
8a3fe4f8 | 6511 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6512 | } |
6513 | ||
6514 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6515 | inside a catch_errors */ | |
6516 | ||
6517 | static int | |
4efb68b1 | 6518 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6519 | { |
6520 | args_for_catchpoint_enable *args = arg; | |
6521 | struct symtab_and_line *sal; | |
b5de0fa7 | 6522 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6523 | if (sal == NULL) |
6524 | return 0; | |
6525 | else if (sal == (struct symtab_and_line *) -1) | |
6526 | return -1; | |
6527 | else | |
c5aa993b | 6528 | return 1; /*is valid */ |
c906108c SS |
6529 | } |
6530 | ||
c906108c | 6531 | static void |
fba45db2 | 6532 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6533 | { |
c5aa993b | 6534 | |
c906108c SS |
6535 | /* The first argument may be an event name, such as "start" or "load". |
6536 | If so, then handle it as such. If it doesn't match an event name, | |
6537 | then attempt to interpret it as an exception name. (This latter is | |
6538 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6539 | |
c906108c | 6540 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6541 | char *arg1_start = arg; |
6542 | char *arg1_end; | |
6543 | int arg1_length; | |
6544 | ||
c906108c SS |
6545 | if (arg1_start == NULL) |
6546 | { | |
c5aa993b | 6547 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6548 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6549 | /* return; */ | |
c5aa993b | 6550 | /* Now, this is not allowed */ |
8a3fe4f8 | 6551 | error (_("Catch requires an event name.")); |
c906108c SS |
6552 | |
6553 | } | |
6554 | arg1_end = ep_find_event_name_end (arg1_start); | |
6555 | if (arg1_end == NULL) | |
8a3fe4f8 | 6556 | error (_("catch requires an event")); |
c906108c | 6557 | arg1_length = arg1_end + 1 - arg1_start; |
c5aa993b | 6558 | |
c906108c SS |
6559 | /* Try to match what we found against known event names. */ |
6560 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6561 | { | |
8a3fe4f8 | 6562 | error (_("Catch of signal not yet implemented")); |
c906108c SS |
6563 | } |
6564 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6565 | { | |
53a5351d JM |
6566 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6567 | tempflag, from_tty); | |
c906108c SS |
6568 | } |
6569 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6570 | { | |
53a5351d JM |
6571 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6572 | tempflag, from_tty); | |
c906108c SS |
6573 | } |
6574 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6575 | { | |
8a3fe4f8 | 6576 | error (_("Catch of thread_start not yet implemented")); |
c906108c SS |
6577 | } |
6578 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6579 | { | |
8a3fe4f8 | 6580 | error (_("Catch of thread_exit not yet implemented")); |
c906108c SS |
6581 | } |
6582 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6583 | { | |
8a3fe4f8 | 6584 | error (_("Catch of thread_join not yet implemented")); |
c906108c SS |
6585 | } |
6586 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6587 | { | |
8a3fe4f8 | 6588 | error (_("Catch of start not yet implemented")); |
c906108c SS |
6589 | } |
6590 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6591 | { | |
8a3fe4f8 | 6592 | error (_("Catch of exit not yet implemented")); |
c906108c SS |
6593 | } |
6594 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6595 | { | |
c5aa993b | 6596 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6597 | } |
6598 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6599 | { | |
c5aa993b | 6600 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6601 | } |
6602 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6603 | { | |
c5aa993b | 6604 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6605 | } |
6606 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6607 | { | |
c5aa993b | 6608 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6609 | } |
6610 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6611 | { | |
c5aa993b | 6612 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6613 | } |
6614 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6615 | { | |
8a3fe4f8 | 6616 | error (_("Catch of stop not yet implemented")); |
c906108c | 6617 | } |
c5aa993b | 6618 | |
c906108c SS |
6619 | /* This doesn't appear to be an event name */ |
6620 | ||
6621 | else | |
6622 | { | |
6623 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6624 | as the name of an exception */ |
c906108c | 6625 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6626 | /* Now this is not allowed */ |
8a3fe4f8 | 6627 | error (_("Unknown event kind specified for catch")); |
c906108c SS |
6628 | |
6629 | } | |
6630 | } | |
6631 | ||
6632 | /* Used by the gui, could be made a worker for other things. */ | |
6633 | ||
6634 | struct breakpoint * | |
fba45db2 | 6635 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6636 | { |
6637 | struct breakpoint *b; | |
4d28f7a8 | 6638 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6639 | set_breakpoint_count (breakpoint_count + 1); |
6640 | b->number = breakpoint_count; | |
c906108c SS |
6641 | b->cond = 0; |
6642 | b->thread = -1; | |
6643 | return b; | |
6644 | } | |
6645 | ||
c906108c | 6646 | static void |
fba45db2 | 6647 | catch_command (char *arg, int from_tty) |
c906108c SS |
6648 | { |
6649 | catch_command_1 (arg, 0, from_tty); | |
6650 | } | |
6651 | \f | |
6652 | ||
6653 | static void | |
fba45db2 | 6654 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6655 | { |
6656 | catch_command_1 (arg, 1, from_tty); | |
6657 | } | |
6658 | ||
80f8a6eb | 6659 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6660 | |
6661 | static void | |
fba45db2 | 6662 | clear_command (char *arg, int from_tty) |
c906108c | 6663 | { |
80f8a6eb | 6664 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6665 | int default_match; |
6666 | struct symtabs_and_lines sals; | |
6667 | struct symtab_and_line sal; | |
c906108c SS |
6668 | int i; |
6669 | ||
6670 | if (arg) | |
6671 | { | |
6672 | sals = decode_line_spec (arg, 1); | |
6673 | default_match = 0; | |
6674 | } | |
6675 | else | |
6676 | { | |
c5aa993b | 6677 | sals.sals = (struct symtab_and_line *) |
c906108c | 6678 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6679 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6680 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6681 | sal.line = default_breakpoint_line; |
6682 | sal.symtab = default_breakpoint_symtab; | |
6683 | sal.pc = default_breakpoint_address; | |
6684 | if (sal.symtab == 0) | |
8a3fe4f8 | 6685 | error (_("No source file specified.")); |
c906108c SS |
6686 | |
6687 | sals.sals[0] = sal; | |
6688 | sals.nelts = 1; | |
6689 | ||
6690 | default_match = 1; | |
6691 | } | |
6692 | ||
6693 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6694 | to it. Do it in two passes, solely to preserve the current |
6695 | behavior that from_tty is forced true if we delete more than | |
6696 | one breakpoint. */ | |
c906108c | 6697 | |
80f8a6eb | 6698 | found = NULL; |
c906108c SS |
6699 | for (i = 0; i < sals.nelts; i++) |
6700 | { | |
6701 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6702 | If line given (pc == 0), clear all bpts on specified line. |
6703 | If defaulting, clear all bpts on default line | |
c906108c | 6704 | or at default pc. |
c5aa993b JM |
6705 | |
6706 | defaulting sal.pc != 0 tests to do | |
6707 | ||
6708 | 0 1 pc | |
6709 | 1 1 pc _and_ line | |
6710 | 0 0 line | |
6711 | 1 0 <can't happen> */ | |
c906108c SS |
6712 | |
6713 | sal = sals.sals[i]; | |
80f8a6eb | 6714 | prev = NULL; |
c906108c | 6715 | |
80f8a6eb MS |
6716 | /* Find all matching breakpoints, remove them from the |
6717 | breakpoint chain, and add them to the 'found' chain. */ | |
6718 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6719 | { |
80f8a6eb MS |
6720 | /* Are we going to delete b? */ |
6721 | if (b->type != bp_none | |
6722 | && b->type != bp_watchpoint | |
6723 | && b->type != bp_hardware_watchpoint | |
6724 | && b->type != bp_read_watchpoint | |
6725 | && b->type != bp_access_watchpoint | |
6726 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6727 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6728 | && (!section_is_overlay (b->loc->section) |
6729 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6730 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6731 | || ((default_match || (0 == sal.pc)) | |
6732 | && b->source_file != NULL | |
6733 | && sal.symtab != NULL | |
6314a349 | 6734 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
80f8a6eb MS |
6735 | && b->line_number == sal.line))) |
6736 | /* Yes, if sal source file and line matches b. */ | |
6737 | { | |
6738 | /* Remove it from breakpoint_chain... */ | |
6739 | if (b == breakpoint_chain) | |
6740 | { | |
6741 | /* b is at the head of the list */ | |
6742 | breakpoint_chain = b->next; | |
6743 | } | |
6744 | else | |
6745 | { | |
6746 | prev->next = b->next; | |
6747 | } | |
6748 | /* And add it to 'found' chain. */ | |
6749 | b->next = found; | |
6750 | found = b; | |
6751 | } | |
c906108c | 6752 | else |
80f8a6eb MS |
6753 | { |
6754 | /* Keep b, and keep a pointer to it. */ | |
6755 | prev = b; | |
6756 | } | |
c906108c | 6757 | } |
80f8a6eb MS |
6758 | } |
6759 | /* Now go thru the 'found' chain and delete them. */ | |
6760 | if (found == 0) | |
6761 | { | |
6762 | if (arg) | |
8a3fe4f8 | 6763 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6764 | else |
8a3fe4f8 | 6765 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6766 | } |
c906108c | 6767 | |
80f8a6eb MS |
6768 | if (found->next) |
6769 | from_tty = 1; /* Always report if deleted more than one */ | |
6770 | if (from_tty) | |
a3f17187 AC |
6771 | { |
6772 | if (!found->next) | |
6773 | printf_unfiltered (_("Deleted breakpoint ")); | |
6774 | else | |
6775 | printf_unfiltered (_("Deleted breakpoints ")); | |
6776 | } | |
80f8a6eb MS |
6777 | breakpoints_changed (); |
6778 | while (found) | |
6779 | { | |
c5aa993b | 6780 | if (from_tty) |
80f8a6eb MS |
6781 | printf_unfiltered ("%d ", found->number); |
6782 | tmp = found->next; | |
6783 | delete_breakpoint (found); | |
6784 | found = tmp; | |
c906108c | 6785 | } |
80f8a6eb MS |
6786 | if (from_tty) |
6787 | putchar_unfiltered ('\n'); | |
c906108c SS |
6788 | } |
6789 | \f | |
6790 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6791 | all breakpoints that are marked for deletion, whether hit or not. | |
6792 | This is called after any breakpoint is hit, or after errors. */ | |
6793 | ||
6794 | void | |
fba45db2 | 6795 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6796 | { |
6797 | struct breakpoint *b, *temp; | |
6798 | ||
6799 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6800 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6801 | && bs->stop) |
6802 | delete_breakpoint (bs->breakpoint_at); | |
6803 | ||
6804 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6805 | { |
b5de0fa7 | 6806 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6807 | delete_breakpoint (b); |
6808 | } | |
c906108c SS |
6809 | } |
6810 | ||
53a5351d JM |
6811 | /* Delete a breakpoint and clean up all traces of it in the data |
6812 | structures. */ | |
c906108c SS |
6813 | |
6814 | void | |
fba45db2 | 6815 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6816 | { |
52f0bd74 AC |
6817 | struct breakpoint *b; |
6818 | bpstat bs; | |
7cc221ef | 6819 | struct bp_location *loc; |
c906108c | 6820 | |
8a3fe4f8 | 6821 | gdb_assert (bpt != NULL); |
c906108c SS |
6822 | |
6823 | /* Has this bp already been deleted? This can happen because multiple | |
6824 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6825 | ||
6826 | One example of this happening is a watchpoint's scope bp. When the | |
6827 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6828 | delete it. We also delete its scope bp. But the scope bp is marked | |
6829 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6830 | checked for auto-deleting bp's, which are deleted. | |
6831 | ||
6832 | A real solution to this problem might involve reference counts in bp's, | |
6833 | and/or giving them pointers back to their referencing bpstat's, and | |
6834 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 6835 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
6836 | if (bpt->type == bp_none) |
6837 | return; | |
6838 | ||
9a4105ab AC |
6839 | if (deprecated_delete_breakpoint_hook) |
6840 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 6841 | breakpoint_delete_event (bpt->number); |
c906108c | 6842 | |
5cab636d | 6843 | if (bpt->loc->inserted) |
0bde7532 | 6844 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6845 | |
7270d8f2 OF |
6846 | free_valchain (bpt->loc); |
6847 | ||
c906108c SS |
6848 | if (breakpoint_chain == bpt) |
6849 | breakpoint_chain = bpt->next; | |
6850 | ||
7cc221ef DJ |
6851 | if (bp_location_chain == bpt->loc) |
6852 | bp_location_chain = bpt->loc->next; | |
6853 | ||
c906108c SS |
6854 | /* If we have callback-style exception catchpoints, don't go through |
6855 | the adjustments to the C++ runtime library etc. if the inferior | |
6856 | isn't actually running. target_enable_exception_callback for a | |
6857 | null target ops vector gives an undesirable error message, so we | |
6858 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
1272ad14 | 6859 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6860 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6861 | { | |
53a5351d | 6862 | /* Format possible error msg */ |
9ebf4acf AC |
6863 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6864 | bpt->number); | |
6865 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
6866 | args_for_catchpoint_enable args; | |
53a5351d JM |
6867 | args.kind = bpt->type == bp_catch_catch ? |
6868 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6869 | args.enable_p = 0; |
c906108c SS |
6870 | catch_errors (cover_target_enable_exception_callback, &args, |
6871 | message, RETURN_MASK_ALL); | |
9ebf4acf | 6872 | do_cleanups (cleanups); |
c906108c SS |
6873 | } |
6874 | ||
6875 | ||
6876 | ALL_BREAKPOINTS (b) | |
6877 | if (b->next == bpt) | |
c5aa993b JM |
6878 | { |
6879 | b->next = bpt->next; | |
6880 | break; | |
6881 | } | |
c906108c | 6882 | |
7cc221ef DJ |
6883 | ALL_BP_LOCATIONS (loc) |
6884 | if (loc->next == bpt->loc) | |
6885 | { | |
6886 | loc->next = bpt->loc->next; | |
6887 | break; | |
6888 | } | |
6889 | ||
9f60f21b | 6890 | check_duplicates (bpt); |
c906108c SS |
6891 | /* If this breakpoint was inserted, and there is another breakpoint |
6892 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 6893 | if (bpt->loc->inserted |
c906108c SS |
6894 | && bpt->type != bp_hardware_watchpoint |
6895 | && bpt->type != bp_read_watchpoint | |
6896 | && bpt->type != bp_access_watchpoint | |
6897 | && bpt->type != bp_catch_fork | |
6898 | && bpt->type != bp_catch_vfork | |
6899 | && bpt->type != bp_catch_exec) | |
6900 | { | |
6901 | ALL_BREAKPOINTS (b) | |
5cab636d | 6902 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 6903 | && b->loc->section == bpt->loc->section |
5cab636d | 6904 | && !b->loc->duplicate |
b5de0fa7 EZ |
6905 | && b->enable_state != bp_disabled |
6906 | && b->enable_state != bp_shlib_disabled | |
0101ce28 | 6907 | && !b->pending |
b5de0fa7 | 6908 | && b->enable_state != bp_call_disabled) |
c5aa993b JM |
6909 | { |
6910 | int val; | |
53a5351d | 6911 | |
c2c6d25f JM |
6912 | /* We should never reach this point if there is a permanent |
6913 | breakpoint at the same address as the one being deleted. | |
6914 | If there is a permanent breakpoint somewhere, it should | |
6915 | always be the only one inserted. */ | |
b5de0fa7 | 6916 | if (b->enable_state == bp_permanent) |
8e65ff28 | 6917 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
6918 | _("another breakpoint was inserted on top of " |
6919 | "a permanent breakpoint")); | |
c2c6d25f | 6920 | |
8181d85f DJ |
6921 | memset (&b->loc->target_info, 0, sizeof (b->loc->target_info)); |
6922 | b->loc->target_info.placed_address = b->loc->address; | |
53a5351d | 6923 | if (b->type == bp_hardware_breakpoint) |
8181d85f | 6924 | val = target_insert_hw_breakpoint (&b->loc->target_info); |
53a5351d | 6925 | else |
8181d85f | 6926 | val = target_insert_breakpoint (&b->loc->target_info); |
53a5351d | 6927 | |
81d0cc19 | 6928 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6929 | if (val != 0) |
6930 | { | |
81d0cc19 GS |
6931 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6932 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6933 | ||
6934 | ||
6935 | if (b->type == bp_hardware_breakpoint) | |
6936 | { | |
6937 | fprintf_unfiltered (tmp_error_stream, | |
6938 | "Cannot insert hardware breakpoint %d.\n" | |
6939 | "You may have requested too many hardware breakpoints.\n", | |
6940 | b->number); | |
6941 | } | |
6942 | else | |
6943 | { | |
6944 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6945 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
66bf4b3a | 6946 | deprecated_print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
6947 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
6948 | safe_strerror (val)); | |
6949 | } | |
6950 | ||
6951 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6952 | target_terminal_ours_for_output (); |
81d0cc19 | 6953 | error_stream(tmp_error_stream); |
c5aa993b JM |
6954 | } |
6955 | else | |
5cab636d | 6956 | b->loc->inserted = 1; |
c5aa993b | 6957 | } |
c906108c SS |
6958 | } |
6959 | ||
6960 | free_command_lines (&bpt->commands); | |
6961 | if (bpt->cond) | |
b8c9b27d | 6962 | xfree (bpt->cond); |
c906108c | 6963 | if (bpt->cond_string != NULL) |
b8c9b27d | 6964 | xfree (bpt->cond_string); |
c906108c | 6965 | if (bpt->addr_string != NULL) |
b8c9b27d | 6966 | xfree (bpt->addr_string); |
c906108c | 6967 | if (bpt->exp != NULL) |
b8c9b27d | 6968 | xfree (bpt->exp); |
c906108c | 6969 | if (bpt->exp_string != NULL) |
b8c9b27d | 6970 | xfree (bpt->exp_string); |
c906108c SS |
6971 | if (bpt->val != NULL) |
6972 | value_free (bpt->val); | |
6973 | if (bpt->source_file != NULL) | |
b8c9b27d | 6974 | xfree (bpt->source_file); |
c906108c | 6975 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6976 | xfree (bpt->dll_pathname); |
c906108c | 6977 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6978 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6979 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6980 | xfree (bpt->exec_pathname); |
c906108c SS |
6981 | |
6982 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6983 | /* FIXME, how can we find all bpstat's? | |
6984 | We just check stop_bpstat for now. */ | |
6985 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6986 | if (bs->breakpoint_at == bpt) | |
6987 | { | |
6988 | bs->breakpoint_at = NULL; | |
c906108c | 6989 | bs->old_val = NULL; |
c2b8ed2c | 6990 | /* bs->commands will be freed later. */ |
c906108c SS |
6991 | } |
6992 | /* On the chance that someone will soon try again to delete this same | |
6993 | bp, we mark it as deleted before freeing its storage. */ | |
6994 | bpt->type = bp_none; | |
6995 | ||
5cab636d | 6996 | xfree (bpt->loc); |
b8c9b27d | 6997 | xfree (bpt); |
c906108c SS |
6998 | } |
6999 | ||
4d6140d9 AC |
7000 | static void |
7001 | do_delete_breakpoint_cleanup (void *b) | |
7002 | { | |
7003 | delete_breakpoint (b); | |
7004 | } | |
7005 | ||
7006 | struct cleanup * | |
7007 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7008 | { | |
7009 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7010 | } | |
7011 | ||
7012 | struct cleanup * | |
7013 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
7014 | { | |
7015 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
7016 | } | |
7017 | ||
c906108c | 7018 | void |
fba45db2 | 7019 | delete_command (char *arg, int from_tty) |
c906108c SS |
7020 | { |
7021 | struct breakpoint *b, *temp; | |
7022 | ||
ea9365bb TT |
7023 | dont_repeat (); |
7024 | ||
c906108c SS |
7025 | if (arg == 0) |
7026 | { | |
7027 | int breaks_to_delete = 0; | |
7028 | ||
7029 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7030 | Do not delete internal or call-dummy breakpoints, these |
7031 | have to be deleted with an explicit breakpoint number argument. */ | |
7032 | ALL_BREAKPOINTS (b) | |
7033 | { | |
7034 | if (b->type != bp_call_dummy && | |
7035 | b->type != bp_shlib_event && | |
c4093a6a | 7036 | b->type != bp_thread_event && |
1900040c | 7037 | b->type != bp_overlay_event && |
c5aa993b JM |
7038 | b->number >= 0) |
7039 | breaks_to_delete = 1; | |
7040 | } | |
c906108c SS |
7041 | |
7042 | /* Ask user only if there are some breakpoints to delete. */ | |
7043 | if (!from_tty | |
e2e0b3e5 | 7044 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7045 | { |
c5aa993b JM |
7046 | ALL_BREAKPOINTS_SAFE (b, temp) |
7047 | { | |
7048 | if (b->type != bp_call_dummy && | |
7049 | b->type != bp_shlib_event && | |
c4093a6a | 7050 | b->type != bp_thread_event && |
1900040c | 7051 | b->type != bp_overlay_event && |
c5aa993b JM |
7052 | b->number >= 0) |
7053 | delete_breakpoint (b); | |
7054 | } | |
c906108c SS |
7055 | } |
7056 | } | |
7057 | else | |
7058 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7059 | } | |
7060 | ||
7061 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
7062 | The value we return ends up being the return value from catch_errors. | |
7063 | Unused in this case. */ | |
7064 | ||
7065 | static int | |
4efb68b1 | 7066 | breakpoint_re_set_one (void *bint) |
c906108c | 7067 | { |
53a5351d JM |
7068 | /* get past catch_errs */ |
7069 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7070 | struct value *mark; |
7071 | int i; | |
84acb35a JJ |
7072 | int not_found; |
7073 | int *not_found_ptr = NULL; | |
c906108c SS |
7074 | struct symtabs_and_lines sals; |
7075 | char *s; | |
b5de0fa7 | 7076 | enum enable_state save_enable; |
c906108c SS |
7077 | |
7078 | switch (b->type) | |
7079 | { | |
7080 | case bp_none: | |
8a3fe4f8 | 7081 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7082 | b->number); |
c906108c SS |
7083 | return 0; |
7084 | case bp_breakpoint: | |
7085 | case bp_hardware_breakpoint: | |
7086 | case bp_catch_load: | |
7087 | case bp_catch_unload: | |
7088 | if (b->addr_string == NULL) | |
7089 | { | |
7090 | /* Anything without a string can't be re-set. */ | |
7091 | delete_breakpoint (b); | |
7092 | return 0; | |
7093 | } | |
b18c45ed AC |
7094 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
7095 | ||
7096 | ``And a hack it is, although Apple's Darwin version of GDB | |
7097 | contains an almost identical hack to implement a "future | |
7098 | break" command. It seems to work in many real world cases, | |
7099 | but it is easy to come up with a test case where the patch | |
7100 | doesn't help at all.'' | |
7101 | ||
7102 | ``It seems that the way GDB implements breakpoints - in - | |
7103 | shared - libraries was designed for a.out shared library | |
7104 | systems (SunOS 4) where shared libraries were loaded at a | |
7105 | fixed address in memory. Since ELF shared libraries can (and | |
7106 | will) be loaded at any address in memory, things break. | |
7107 | Fixing this is not trivial. Therefore, I'm not sure whether | |
7108 | we should add this hack to the branch only. I cannot | |
7109 | guarantee that things will be fixed on the trunk in the near | |
7110 | future.'' | |
7111 | ||
7112 | In case we have a problem, disable this breakpoint. We'll | |
7113 | restore its status if we succeed. Don't disable a | |
7114 | shlib_disabled breakpoint though. There's a fair chance we | |
7115 | can't re-set it if the shared library it's in hasn't been | |
7116 | loaded yet. */ | |
0101ce28 JJ |
7117 | |
7118 | if (b->pending) | |
7119 | break; | |
7120 | ||
b5de0fa7 | 7121 | save_enable = b->enable_state; |
b18c45ed AC |
7122 | if (b->enable_state != bp_shlib_disabled) |
7123 | b->enable_state = bp_disabled; | |
84acb35a JJ |
7124 | else |
7125 | /* If resetting a shlib-disabled breakpoint, we don't want to | |
7126 | see an error message if it is not found since we will expect | |
7127 | this to occur until the shared library is finally reloaded. | |
7128 | We accomplish this by giving decode_line_1 a pointer to use | |
7129 | for silent notification that the symbol is not found. */ | |
7130 | not_found_ptr = ¬_found; | |
c906108c SS |
7131 | |
7132 | set_language (b->language); | |
7133 | input_radix = b->input_radix; | |
7134 | s = b->addr_string; | |
84acb35a JJ |
7135 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7136 | not_found_ptr); | |
c906108c SS |
7137 | for (i = 0; i < sals.nelts; i++) |
7138 | { | |
7139 | resolve_sal_pc (&sals.sals[i]); | |
7140 | ||
7141 | /* Reparse conditions, they might contain references to the | |
7142 | old symtab. */ | |
7143 | if (b->cond_string != NULL) | |
7144 | { | |
7145 | s = b->cond_string; | |
7146 | if (b->cond) | |
fad0733a DJ |
7147 | { |
7148 | xfree (b->cond); | |
7149 | /* Avoid re-freeing b->exp if an error during the call | |
7150 | to parse_exp_1. */ | |
7151 | b->cond = NULL; | |
7152 | } | |
c906108c SS |
7153 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7154 | } | |
7155 | ||
c5aa993b | 7156 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 7157 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
7158 | /* ...or new and old breakpoints both have source files, and |
7159 | the source file name or the line number changes... */ | |
c906108c SS |
7160 | || (b->source_file != NULL |
7161 | && sals.sals[i].symtab != NULL | |
6314a349 | 7162 | && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0 |
c906108c | 7163 | || b->line_number != sals.sals[i].line) |
c906108c | 7164 | ) |
c5aa993b JM |
7165 | /* ...or we switch between having a source file and not having |
7166 | one. */ | |
7167 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7168 | ) | |
c906108c SS |
7169 | { |
7170 | if (b->source_file != NULL) | |
b8c9b27d | 7171 | xfree (b->source_file); |
c906108c SS |
7172 | if (sals.sals[i].symtab == NULL) |
7173 | b->source_file = NULL; | |
7174 | else | |
7175 | b->source_file = | |
7176 | savestring (sals.sals[i].symtab->filename, | |
7177 | strlen (sals.sals[i].symtab->filename)); | |
7178 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
7179 | b->loc->requested_address = sals.sals[i].pc; |
7180 | b->loc->address | |
88f7da05 KB |
7181 | = adjust_breakpoint_address (b->loc->requested_address, |
7182 | b->type); | |
c906108c | 7183 | |
c5aa993b | 7184 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7185 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7186 | breakpoints. */ |
c906108c SS |
7187 | |
7188 | mention (b); | |
7189 | ||
7190 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7191 | rather than once for every breakpoint. */ |
c906108c SS |
7192 | breakpoints_changed (); |
7193 | } | |
cf3a9e5b | 7194 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 7195 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7196 | |
7197 | ||
c5aa993b | 7198 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7199 | can be used. */ |
9f60f21b | 7200 | check_duplicates (b); |
c906108c SS |
7201 | |
7202 | } | |
b8c9b27d | 7203 | xfree (sals.sals); |
c906108c SS |
7204 | break; |
7205 | ||
7206 | case bp_watchpoint: | |
7207 | case bp_hardware_watchpoint: | |
7208 | case bp_read_watchpoint: | |
7209 | case bp_access_watchpoint: | |
7210 | innermost_block = NULL; | |
53a5351d JM |
7211 | /* The issue arises of what context to evaluate this in. The |
7212 | same one as when it was set, but what does that mean when | |
7213 | symbols have been re-read? We could save the filename and | |
7214 | functionname, but if the context is more local than that, the | |
7215 | best we could do would be something like how many levels deep | |
7216 | and which index at that particular level, but that's going to | |
7217 | be less stable than filenames or function names. */ | |
7218 | ||
c906108c SS |
7219 | /* So for now, just use a global context. */ |
7220 | if (b->exp) | |
a355c7de AC |
7221 | { |
7222 | xfree (b->exp); | |
7223 | /* Avoid re-freeing b->exp if an error during the call to | |
7224 | parse_expression. */ | |
7225 | b->exp = NULL; | |
7226 | } | |
c906108c SS |
7227 | b->exp = parse_expression (b->exp_string); |
7228 | b->exp_valid_block = innermost_block; | |
7229 | mark = value_mark (); | |
7230 | if (b->val) | |
a355c7de AC |
7231 | { |
7232 | value_free (b->val); | |
7233 | /* Avoid re-freeing b->val if an error during the call to | |
7234 | evaluate_expression. */ | |
7235 | b->val = NULL; | |
7236 | } | |
c906108c SS |
7237 | b->val = evaluate_expression (b->exp); |
7238 | release_value (b->val); | |
d69fe07e | 7239 | if (value_lazy (b->val) && breakpoint_enabled (b)) |
c906108c SS |
7240 | value_fetch_lazy (b->val); |
7241 | ||
7242 | if (b->cond_string != NULL) | |
7243 | { | |
7244 | s = b->cond_string; | |
7245 | if (b->cond) | |
a355c7de AC |
7246 | { |
7247 | xfree (b->cond); | |
7248 | /* Avoid re-freeing b->exp if an error during the call | |
7249 | to parse_exp_1. */ | |
7250 | b->cond = NULL; | |
7251 | } | |
c5aa993b | 7252 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7253 | } |
468d015d | 7254 | if (breakpoint_enabled (b)) |
c906108c SS |
7255 | mention (b); |
7256 | value_free_to_mark (mark); | |
7257 | break; | |
c5aa993b JM |
7258 | case bp_catch_catch: |
7259 | case bp_catch_throw: | |
c906108c | 7260 | break; |
c5aa993b JM |
7261 | /* We needn't really do anything to reset these, since the mask |
7262 | that requests them is unaffected by e.g., new libraries being | |
7263 | loaded. */ | |
c906108c SS |
7264 | case bp_catch_fork: |
7265 | case bp_catch_vfork: | |
7266 | case bp_catch_exec: | |
7267 | break; | |
c5aa993b | 7268 | |
c906108c | 7269 | default: |
a3f17187 | 7270 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7271 | /* fall through */ |
1900040c MS |
7272 | /* Delete longjmp and overlay event breakpoints; they will be |
7273 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7274 | case bp_longjmp: |
7275 | case bp_longjmp_resume: | |
1900040c | 7276 | case bp_overlay_event: |
c906108c SS |
7277 | delete_breakpoint (b); |
7278 | break; | |
7279 | ||
c5aa993b JM |
7280 | /* This breakpoint is special, it's set up when the inferior |
7281 | starts and we really don't want to touch it. */ | |
c906108c SS |
7282 | case bp_shlib_event: |
7283 | ||
c4093a6a JM |
7284 | /* Like bp_shlib_event, this breakpoint type is special. |
7285 | Once it is set up, we do not want to touch it. */ | |
7286 | case bp_thread_event: | |
7287 | ||
c5aa993b JM |
7288 | /* Keep temporary breakpoints, which can be encountered when we step |
7289 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7290 | Otherwise these should have been blown away via the cleanup chain | |
7291 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7292 | case bp_until: |
7293 | case bp_finish: | |
7294 | case bp_watchpoint_scope: | |
7295 | case bp_call_dummy: | |
7296 | case bp_step_resume: | |
7297 | break; | |
7298 | } | |
7299 | ||
7300 | return 0; | |
7301 | } | |
7302 | ||
7303 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7304 | void | |
fba45db2 | 7305 | breakpoint_re_set (void) |
c906108c SS |
7306 | { |
7307 | struct breakpoint *b, *temp; | |
7308 | enum language save_language; | |
7309 | int save_input_radix; | |
c5aa993b | 7310 | |
c906108c SS |
7311 | save_language = current_language->la_language; |
7312 | save_input_radix = input_radix; | |
7313 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7314 | { |
53a5351d | 7315 | /* Format possible error msg */ |
9ebf4acf AC |
7316 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7317 | b->number); | |
7318 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7319 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7320 | do_cleanups (cleanups); |
c5aa993b | 7321 | } |
c906108c SS |
7322 | set_language (save_language); |
7323 | input_radix = save_input_radix; | |
7324 | ||
9df628e0 RE |
7325 | if (GET_LONGJMP_TARGET_P ()) |
7326 | { | |
7327 | create_longjmp_breakpoint ("longjmp"); | |
7328 | create_longjmp_breakpoint ("_longjmp"); | |
7329 | create_longjmp_breakpoint ("siglongjmp"); | |
7330 | create_longjmp_breakpoint ("_siglongjmp"); | |
7331 | create_longjmp_breakpoint (NULL); | |
7332 | } | |
1900040c MS |
7333 | |
7334 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7335 | } |
7336 | \f | |
c906108c SS |
7337 | /* Reset the thread number of this breakpoint: |
7338 | ||
7339 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7340 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7341 | void |
fba45db2 | 7342 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7343 | { |
7344 | if (b->thread != -1) | |
7345 | { | |
39f77062 KB |
7346 | if (in_thread_list (inferior_ptid)) |
7347 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7348 | } |
7349 | } | |
7350 | ||
03ac34d5 MS |
7351 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7352 | If from_tty is nonzero, it prints a message to that effect, | |
7353 | which ends with a period (no newline). */ | |
7354 | ||
c906108c | 7355 | void |
fba45db2 | 7356 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7357 | { |
52f0bd74 | 7358 | struct breakpoint *b; |
c906108c SS |
7359 | |
7360 | if (count < 0) | |
7361 | count = 0; | |
7362 | ||
7363 | ALL_BREAKPOINTS (b) | |
7364 | if (b->number == bptnum) | |
c5aa993b JM |
7365 | { |
7366 | b->ignore_count = count; | |
221ea385 KS |
7367 | if (from_tty) |
7368 | { | |
7369 | if (count == 0) | |
a3f17187 | 7370 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7371 | bptnum); |
7372 | else if (count == 1) | |
a3f17187 | 7373 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7374 | bptnum); |
7375 | else | |
a3f17187 | 7376 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7377 | count, bptnum); |
7378 | } | |
c5aa993b | 7379 | breakpoints_changed (); |
221ea385 | 7380 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7381 | return; |
7382 | } | |
c906108c | 7383 | |
8a3fe4f8 | 7384 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7385 | } |
7386 | ||
7387 | /* Clear the ignore counts of all breakpoints. */ | |
7388 | void | |
fba45db2 | 7389 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7390 | { |
7391 | struct breakpoint *b; | |
7392 | ||
7393 | ALL_BREAKPOINTS (b) | |
7394 | b->ignore_count = 0; | |
7395 | } | |
7396 | ||
7397 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7398 | ||
7399 | static void | |
fba45db2 | 7400 | ignore_command (char *args, int from_tty) |
c906108c SS |
7401 | { |
7402 | char *p = args; | |
52f0bd74 | 7403 | int num; |
c906108c SS |
7404 | |
7405 | if (p == 0) | |
e2e0b3e5 | 7406 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7407 | |
c906108c | 7408 | num = get_number (&p); |
5c44784c | 7409 | if (num == 0) |
8a3fe4f8 | 7410 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7411 | if (*p == 0) |
8a3fe4f8 | 7412 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7413 | |
7414 | set_ignore_count (num, | |
7415 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7416 | from_tty); | |
221ea385 KS |
7417 | if (from_tty) |
7418 | printf_filtered ("\n"); | |
c906108c SS |
7419 | } |
7420 | \f | |
7421 | /* Call FUNCTION on each of the breakpoints | |
7422 | whose numbers are given in ARGS. */ | |
7423 | ||
7424 | static void | |
831662b3 | 7425 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7426 | { |
52f0bd74 | 7427 | char *p = args; |
c906108c | 7428 | char *p1; |
52f0bd74 AC |
7429 | int num; |
7430 | struct breakpoint *b, *tmp; | |
11cf8741 | 7431 | int match; |
c906108c SS |
7432 | |
7433 | if (p == 0) | |
e2e0b3e5 | 7434 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7435 | |
7436 | while (*p) | |
7437 | { | |
11cf8741 | 7438 | match = 0; |
c906108c | 7439 | p1 = p; |
c5aa993b | 7440 | |
5c44784c JM |
7441 | num = get_number_or_range (&p1); |
7442 | if (num == 0) | |
c5aa993b | 7443 | { |
8a3fe4f8 | 7444 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7445 | } |
7446 | else | |
7447 | { | |
7448 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7449 | if (b->number == num) | |
7450 | { | |
7451 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7452 | match = 1; |
5c44784c JM |
7453 | function (b); |
7454 | if (related_breakpoint) | |
7455 | function (related_breakpoint); | |
11cf8741 | 7456 | break; |
5c44784c | 7457 | } |
11cf8741 | 7458 | if (match == 0) |
a3f17187 | 7459 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7460 | } |
c906108c SS |
7461 | p = p1; |
7462 | } | |
7463 | } | |
7464 | ||
1900040c MS |
7465 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7466 | If from_tty is nonzero, it prints a message to that effect, | |
7467 | which ends with a period (no newline). */ | |
7468 | ||
c906108c | 7469 | void |
fba45db2 | 7470 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7471 | { |
7472 | /* Never disable a watchpoint scope breakpoint; we want to | |
7473 | hit them when we leave scope so we can delete both the | |
7474 | watchpoint and its scope breakpoint at that time. */ | |
7475 | if (bpt->type == bp_watchpoint_scope) | |
7476 | return; | |
7477 | ||
c2c6d25f | 7478 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7479 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7480 | return; |
7481 | ||
b5de0fa7 | 7482 | bpt->enable_state = bp_disabled; |
c906108c | 7483 | |
9f60f21b | 7484 | check_duplicates (bpt); |
c906108c | 7485 | |
9a4105ab AC |
7486 | if (deprecated_modify_breakpoint_hook) |
7487 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7488 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7489 | } |
7490 | ||
c906108c | 7491 | static void |
fba45db2 | 7492 | disable_command (char *args, int from_tty) |
c906108c | 7493 | { |
52f0bd74 | 7494 | struct breakpoint *bpt; |
c906108c SS |
7495 | if (args == 0) |
7496 | ALL_BREAKPOINTS (bpt) | |
7497 | switch (bpt->type) | |
c5aa993b JM |
7498 | { |
7499 | case bp_none: | |
8a3fe4f8 | 7500 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7501 | bpt->number); |
c5aa993b JM |
7502 | continue; |
7503 | case bp_breakpoint: | |
7504 | case bp_catch_load: | |
7505 | case bp_catch_unload: | |
7506 | case bp_catch_fork: | |
7507 | case bp_catch_vfork: | |
7508 | case bp_catch_exec: | |
7509 | case bp_catch_catch: | |
7510 | case bp_catch_throw: | |
7511 | case bp_hardware_breakpoint: | |
7512 | case bp_watchpoint: | |
7513 | case bp_hardware_watchpoint: | |
7514 | case bp_read_watchpoint: | |
7515 | case bp_access_watchpoint: | |
7516 | disable_breakpoint (bpt); | |
7517 | default: | |
7518 | continue; | |
7519 | } | |
c906108c SS |
7520 | else |
7521 | map_breakpoint_numbers (args, disable_breakpoint); | |
7522 | } | |
7523 | ||
7524 | static void | |
fba45db2 | 7525 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7526 | { |
c906108c SS |
7527 | int target_resources_ok, other_type_used; |
7528 | struct value *mark; | |
7529 | ||
7530 | if (bpt->type == bp_hardware_breakpoint) | |
7531 | { | |
7532 | int i; | |
c5aa993b | 7533 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7534 | target_resources_ok = |
7535 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7536 | i + 1, 0); | |
c906108c | 7537 | if (target_resources_ok == 0) |
8a3fe4f8 | 7538 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7539 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7540 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7541 | } |
7542 | ||
0101ce28 | 7543 | if (bpt->pending) |
c906108c | 7544 | { |
0101ce28 | 7545 | if (bpt->enable_state != bp_enabled) |
c906108c | 7546 | { |
0101ce28 JJ |
7547 | /* When enabling a pending breakpoint, we need to check if the breakpoint |
7548 | is resolvable since shared libraries could have been loaded | |
7549 | after the breakpoint was disabled. */ | |
7550 | breakpoints_changed (); | |
7551 | if (resolve_pending_breakpoint (bpt) == GDB_RC_OK) | |
c906108c | 7552 | { |
0101ce28 | 7553 | delete_breakpoint (bpt); |
c906108c SS |
7554 | return; |
7555 | } | |
0101ce28 JJ |
7556 | bpt->enable_state = bp_enabled; |
7557 | bpt->disposition = disposition; | |
c906108c | 7558 | } |
0101ce28 JJ |
7559 | } |
7560 | else /* Not a pending breakpoint. */ | |
7561 | { | |
7562 | if (bpt->enable_state != bp_permanent) | |
7563 | bpt->enable_state = bp_enabled; | |
7564 | bpt->disposition = disposition; | |
7565 | check_duplicates (bpt); | |
7566 | breakpoints_changed (); | |
7567 | ||
7568 | if (bpt->type == bp_watchpoint || | |
7569 | bpt->type == bp_hardware_watchpoint || | |
7570 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7571 | bpt->type == bp_access_watchpoint) |
7572 | { | |
7789d0fa AC |
7573 | struct frame_id saved_frame_id; |
7574 | ||
b04f3ab4 | 7575 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); |
0101ce28 JJ |
7576 | if (bpt->exp_valid_block != NULL) |
7577 | { | |
7578 | struct frame_info *fr = | |
7579 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7580 | if (fr == NULL) | |
7581 | { | |
a3f17187 | 7582 | printf_filtered (_("\ |
0101ce28 | 7583 | Cannot enable watchpoint %d because the block in which its expression\n\ |
a3f17187 | 7584 | is valid is not currently in scope.\n"), bpt->number); |
0101ce28 JJ |
7585 | bpt->enable_state = bp_disabled; |
7586 | return; | |
7587 | } | |
0101ce28 JJ |
7588 | select_frame (fr); |
7589 | } | |
7590 | ||
7591 | value_free (bpt->val); | |
7592 | mark = value_mark (); | |
7593 | bpt->val = evaluate_expression (bpt->exp); | |
7594 | release_value (bpt->val); | |
d69fe07e | 7595 | if (value_lazy (bpt->val)) |
0101ce28 JJ |
7596 | value_fetch_lazy (bpt->val); |
7597 | ||
7598 | if (bpt->type == bp_hardware_watchpoint || | |
7599 | bpt->type == bp_read_watchpoint || | |
7600 | bpt->type == bp_access_watchpoint) | |
c5aa993b | 7601 | { |
0101ce28 JJ |
7602 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7603 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7604 | ||
7605 | /* Hack around 'unused var' error for some targets here */ | |
7606 | (void) mem_cnt, i; | |
7607 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7608 | bpt->type, i + mem_cnt, other_type_used); | |
7609 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7610 | bp_watchpoint in the following condition */ | |
7611 | if (target_resources_ok < 0) | |
7612 | { | |
a3f17187 | 7613 | printf_filtered (_("\ |
c906108c | 7614 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 7615 | have been allocated for other watchpoints.\n"), bpt->number); |
0101ce28 JJ |
7616 | bpt->enable_state = bp_disabled; |
7617 | value_free_to_mark (mark); | |
7618 | return; | |
7619 | } | |
c5aa993b | 7620 | } |
0101ce28 | 7621 | |
7789d0fa | 7622 | select_frame (frame_find_by_id (saved_frame_id)); |
0101ce28 | 7623 | value_free_to_mark (mark); |
c5aa993b | 7624 | } |
c906108c | 7625 | } |
0101ce28 | 7626 | |
9a4105ab AC |
7627 | if (deprecated_modify_breakpoint_hook) |
7628 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7629 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7630 | } |
7631 | ||
7632 | void | |
fba45db2 | 7633 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7634 | { |
7635 | do_enable_breakpoint (bpt, bpt->disposition); | |
7636 | } | |
7637 | ||
7638 | /* The enable command enables the specified breakpoints (or all defined | |
7639 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7640 | in stopping the inferior. */ |
c906108c | 7641 | |
c906108c | 7642 | static void |
fba45db2 | 7643 | enable_command (char *args, int from_tty) |
c906108c | 7644 | { |
52f0bd74 | 7645 | struct breakpoint *bpt; |
c906108c SS |
7646 | if (args == 0) |
7647 | ALL_BREAKPOINTS (bpt) | |
7648 | switch (bpt->type) | |
c5aa993b JM |
7649 | { |
7650 | case bp_none: | |
8a3fe4f8 | 7651 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 7652 | bpt->number); |
c5aa993b JM |
7653 | continue; |
7654 | case bp_breakpoint: | |
7655 | case bp_catch_load: | |
7656 | case bp_catch_unload: | |
7657 | case bp_catch_fork: | |
7658 | case bp_catch_vfork: | |
7659 | case bp_catch_exec: | |
7660 | case bp_catch_catch: | |
7661 | case bp_catch_throw: | |
7662 | case bp_hardware_breakpoint: | |
7663 | case bp_watchpoint: | |
7664 | case bp_hardware_watchpoint: | |
7665 | case bp_read_watchpoint: | |
7666 | case bp_access_watchpoint: | |
7667 | enable_breakpoint (bpt); | |
7668 | default: | |
7669 | continue; | |
7670 | } | |
c906108c SS |
7671 | else |
7672 | map_breakpoint_numbers (args, enable_breakpoint); | |
7673 | } | |
7674 | ||
7675 | static void | |
fba45db2 | 7676 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7677 | { |
b5de0fa7 | 7678 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7679 | } |
7680 | ||
c906108c | 7681 | static void |
fba45db2 | 7682 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7683 | { |
7684 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7685 | } | |
7686 | ||
7687 | static void | |
fba45db2 | 7688 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7689 | { |
b5de0fa7 | 7690 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7691 | } |
7692 | ||
c906108c | 7693 | static void |
fba45db2 | 7694 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7695 | { |
7696 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7697 | } | |
7698 | \f | |
fa8d40ab JJ |
7699 | static void |
7700 | set_breakpoint_cmd (char *args, int from_tty) | |
7701 | { | |
7702 | } | |
7703 | ||
7704 | static void | |
7705 | show_breakpoint_cmd (char *args, int from_tty) | |
7706 | { | |
7707 | } | |
7708 | ||
c906108c SS |
7709 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7710 | ||
7711 | struct symtabs_and_lines | |
fba45db2 | 7712 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7713 | { |
7714 | struct symtabs_and_lines sals; | |
7715 | if (string == 0) | |
8a3fe4f8 | 7716 | error (_("Empty line specification.")); |
c906108c SS |
7717 | if (default_breakpoint_valid) |
7718 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7719 | default_breakpoint_symtab, |
7720 | default_breakpoint_line, | |
68219205 | 7721 | (char ***) NULL, NULL); |
c906108c SS |
7722 | else |
7723 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7724 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 7725 | if (*string) |
8a3fe4f8 | 7726 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
7727 | return sals; |
7728 | } | |
8181d85f DJ |
7729 | |
7730 | /* Create and insert a raw software breakpoint at PC. Return an | |
7731 | identifier, which should be used to remove the breakpoint later. | |
7732 | In general, places which call this should be using something on the | |
7733 | breakpoint chain instead; this function should be eliminated | |
7734 | someday. */ | |
7735 | ||
7736 | void * | |
7737 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
7738 | { | |
7739 | struct bp_target_info *bp_tgt; | |
7740 | ||
7741 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
7742 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
7743 | ||
7744 | bp_tgt->placed_address = pc; | |
7745 | if (target_insert_breakpoint (bp_tgt) != 0) | |
7746 | { | |
7747 | /* Could not insert the breakpoint. */ | |
7748 | xfree (bp_tgt); | |
7749 | return NULL; | |
7750 | } | |
7751 | ||
7752 | return bp_tgt; | |
7753 | } | |
7754 | ||
7755 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
7756 | ||
7757 | int | |
7758 | deprecated_remove_raw_breakpoint (void *bp) | |
7759 | { | |
7760 | struct bp_target_info *bp_tgt = bp; | |
7761 | int ret; | |
7762 | ||
7763 | ret = target_remove_breakpoint (bp_tgt); | |
7764 | xfree (bp_tgt); | |
7765 | ||
7766 | return ret; | |
7767 | } | |
7768 | ||
7769 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
7770 | ||
7771 | static void *single_step_breakpoints[2]; | |
7772 | ||
7773 | /* Create and insert a breakpoint for software single step. */ | |
7774 | ||
7775 | void | |
7776 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
7777 | { | |
7778 | void **bpt_p; | |
7779 | ||
7780 | if (single_step_breakpoints[0] == NULL) | |
7781 | bpt_p = &single_step_breakpoints[0]; | |
7782 | else | |
7783 | { | |
7784 | gdb_assert (single_step_breakpoints[1] == NULL); | |
7785 | bpt_p = &single_step_breakpoints[1]; | |
7786 | } | |
7787 | ||
7788 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
7789 | to only create the breakpoints once, and actually put them on the | |
7790 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
7791 | adjust the addresses each time they were needed. Doing this requires | |
7792 | corresponding changes elsewhere where single step breakpoints are | |
7793 | handled, however. So, for now, we use this. */ | |
7794 | ||
7795 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
7796 | if (*bpt_p == NULL) | |
1893a4c0 | 7797 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
7798 | paddr_nz (next_pc)); |
7799 | } | |
7800 | ||
7801 | /* Remove and delete any breakpoints used for software single step. */ | |
7802 | ||
7803 | void | |
7804 | remove_single_step_breakpoints (void) | |
7805 | { | |
7806 | gdb_assert (single_step_breakpoints[0] != NULL); | |
7807 | ||
7808 | /* See insert_single_step_breakpoint for more about this deprecated | |
7809 | call. */ | |
7810 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
7811 | single_step_breakpoints[0] = NULL; | |
7812 | ||
7813 | if (single_step_breakpoints[1] != NULL) | |
7814 | { | |
7815 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
7816 | single_step_breakpoints[1] = NULL; | |
7817 | } | |
7818 | } | |
7819 | ||
c906108c | 7820 | \f |
31e2b00f AS |
7821 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
7822 | It is defined as a macro to prevent duplication. | |
7823 | COMMAND should be a string constant containing the name of the command. */ | |
7824 | #define BREAK_ARGS_HELP(command) \ | |
7825 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
7826 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
7827 | If a line number is specified, break at start of code for that line.\n\ | |
7828 | If a function is specified, break at start of code for that function.\n\ | |
7829 | If an address is specified, break at that exact address.\n\ | |
7830 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
7831 | This is useful for breaking on return to a stack frame.\n\ | |
7832 | \n\ | |
7833 | THREADNUM is the number from \"info threads\".\n\ | |
7834 | CONDITION is a boolean expression.\n\ | |
7835 | \n\ | |
7836 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7837 | \n\ | |
7838 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
7839 | ||
c906108c | 7840 | void |
fba45db2 | 7841 | _initialize_breakpoint (void) |
c906108c | 7842 | { |
fa8d40ab JJ |
7843 | static struct cmd_list_element *breakpoint_set_cmdlist; |
7844 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
7845 | struct cmd_list_element *c; |
7846 | ||
84acb35a | 7847 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 7848 | |
c906108c SS |
7849 | breakpoint_chain = 0; |
7850 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7851 | before a breakpoint is set. */ | |
7852 | breakpoint_count = 0; | |
7853 | ||
1bedd215 AC |
7854 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
7855 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
7856 | Usage is `ignore N COUNT'.")); | |
c906108c | 7857 | if (xdb_commands) |
c5aa993b | 7858 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 7859 | |
1bedd215 AC |
7860 | add_com ("commands", class_breakpoint, commands_command, _("\ |
7861 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
7862 | Give breakpoint number as argument after \"commands\".\n\ |
7863 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7864 | The commands themselves follow starting on the next line.\n\ | |
7865 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7866 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 7867 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 7868 | |
1bedd215 AC |
7869 | add_com ("condition", class_breakpoint, condition_command, _("\ |
7870 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 7871 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 7872 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 7873 | |
1bedd215 | 7874 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 7875 | Set a temporary breakpoint.\n\ |
c906108c SS |
7876 | Like \"break\" except the breakpoint is only temporary,\n\ |
7877 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
7878 | by using \"enable delete\" on the breakpoint number.\n\ |
7879 | \n" | |
7880 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 7881 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7882 | |
1bedd215 | 7883 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 7884 | Set a hardware assisted breakpoint.\n\ |
c906108c | 7885 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
7886 | some target hardware may not have this support.\n\ |
7887 | \n" | |
7888 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 7889 | set_cmd_completer (c, location_completer); |
c906108c | 7890 | |
1bedd215 | 7891 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 7892 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 7893 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
7894 | so it will be deleted when hit.\n\ |
7895 | \n" | |
7896 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 7897 | set_cmd_completer (c, location_completer); |
c906108c | 7898 | |
1bedd215 AC |
7899 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
7900 | Enable some breakpoints.\n\ | |
c906108c SS |
7901 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7902 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7903 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 7904 | With a subcommand you can enable temporarily."), |
c906108c SS |
7905 | &enablelist, "enable ", 1, &cmdlist); |
7906 | if (xdb_commands) | |
1bedd215 AC |
7907 | add_com ("ab", class_breakpoint, enable_command, _("\ |
7908 | Enable some breakpoints.\n\ | |
c906108c SS |
7909 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7910 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7911 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 7912 | With a subcommand you can enable temporarily.")); |
c906108c SS |
7913 | |
7914 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7915 | ||
1bedd215 AC |
7916 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
7917 | Enable some breakpoints.\n\ | |
c906108c SS |
7918 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7919 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 7920 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 7921 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 7922 | |
1a966eab AC |
7923 | add_cmd ("once", no_class, enable_once_command, _("\ |
7924 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7925 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
7926 | &enablebreaklist); |
7927 | ||
1a966eab AC |
7928 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
7929 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7930 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
7931 | &enablebreaklist); |
7932 | ||
1a966eab AC |
7933 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
7934 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7935 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
7936 | &enablelist); |
7937 | ||
1a966eab AC |
7938 | add_cmd ("once", no_class, enable_once_command, _("\ |
7939 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7940 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
7941 | &enablelist); |
7942 | ||
1bedd215 AC |
7943 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
7944 | Disable some breakpoints.\n\ | |
c906108c SS |
7945 | Arguments are breakpoint numbers with spaces in between.\n\ |
7946 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 7947 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
7948 | &disablelist, "disable ", 1, &cmdlist); |
7949 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7950 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7951 | if (xdb_commands) | |
1bedd215 AC |
7952 | add_com ("sb", class_breakpoint, disable_command, _("\ |
7953 | Disable some breakpoints.\n\ | |
c906108c SS |
7954 | Arguments are breakpoint numbers with spaces in between.\n\ |
7955 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 7956 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 7957 | |
1a966eab AC |
7958 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
7959 | Disable some breakpoints.\n\ | |
c906108c SS |
7960 | Arguments are breakpoint numbers with spaces in between.\n\ |
7961 | To disable all breakpoints, give no argument.\n\ | |
7962 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 7963 | This command may be abbreviated \"disable\"."), |
c906108c SS |
7964 | &disablelist); |
7965 | ||
1bedd215 AC |
7966 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
7967 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
7968 | Arguments are breakpoint numbers with spaces in between.\n\ |
7969 | To delete all breakpoints, give no argument.\n\ | |
7970 | \n\ | |
7971 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 7972 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
7973 | &deletelist, "delete ", 1, &cmdlist); |
7974 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 7975 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 7976 | if (xdb_commands) |
1bedd215 AC |
7977 | add_com ("db", class_breakpoint, delete_command, _("\ |
7978 | Delete some breakpoints.\n\ | |
c906108c | 7979 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 7980 | To delete all breakpoints, give no argument.\n")); |
c906108c | 7981 | |
1a966eab AC |
7982 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
7983 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
7984 | Arguments are breakpoint numbers with spaces in between.\n\ |
7985 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 7986 | This command may be abbreviated \"delete\"."), |
c906108c SS |
7987 | &deletelist); |
7988 | ||
1bedd215 AC |
7989 | add_com ("clear", class_breakpoint, clear_command, _("\ |
7990 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
7991 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7992 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7993 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
7994 | If an address is specified, breakpoints at that address are cleared.\n\ |
7995 | \n\ | |
7996 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
7997 | is executing in.\n\ |
7998 | \n\ | |
1bedd215 | 7999 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8000 | |
1bedd215 | 8001 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8002 | Set breakpoint at specified line or function.\n" |
8003 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8004 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8005 | |
c906108c SS |
8006 | add_com_alias ("b", "break", class_run, 1); |
8007 | add_com_alias ("br", "break", class_run, 1); | |
8008 | add_com_alias ("bre", "break", class_run, 1); | |
8009 | add_com_alias ("brea", "break", class_run, 1); | |
8010 | ||
502fd408 | 8011 | if (xdb_commands) |
c906108c SS |
8012 | { |
8013 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8014 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8015 | } |
8016 | ||
8017 | if (dbx_commands) | |
8018 | { | |
1bedd215 AC |
8019 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8020 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8021 | &stoplist, "stop ", 1, &cmdlist); |
8022 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8023 | _("Break in function or address."), &stoplist); |
c5aa993b | 8024 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8025 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8026 | add_com ("status", class_info, breakpoints_info, _("\ |
8027 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8028 | The \"Type\" column indicates one of:\n\ |
8029 | \tbreakpoint - normal breakpoint\n\ | |
8030 | \twatchpoint - watchpoint\n\ | |
8031 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8032 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8033 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8034 | address and file/line number respectively.\n\ |
8035 | \n\ | |
8036 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
c906108c SS |
8037 | are set to the address of the last breakpoint listed.\n\n\ |
8038 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
1bedd215 | 8039 | breakpoint set.")); |
c906108c SS |
8040 | } |
8041 | ||
1bedd215 AC |
8042 | add_info ("breakpoints", breakpoints_info, _("\ |
8043 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8044 | The \"Type\" column indicates one of:\n\ |
8045 | \tbreakpoint - normal breakpoint\n\ | |
8046 | \twatchpoint - watchpoint\n\ | |
8047 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8048 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8049 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8050 | address and file/line number respectively.\n\ |
8051 | \n\ | |
8052 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
c906108c SS |
8053 | are set to the address of the last breakpoint listed.\n\n\ |
8054 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
1bedd215 | 8055 | breakpoint set.")); |
c906108c SS |
8056 | |
8057 | if (xdb_commands) | |
1bedd215 AC |
8058 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8059 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8060 | The \"Type\" column indicates one of:\n\ |
8061 | \tbreakpoint - normal breakpoint\n\ | |
8062 | \twatchpoint - watchpoint\n\ | |
8063 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8064 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8065 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8066 | address and file/line number respectively.\n\ |
8067 | \n\ | |
8068 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
c906108c SS |
8069 | are set to the address of the last breakpoint listed.\n\n\ |
8070 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
1bedd215 | 8071 | breakpoint set.")); |
c906108c | 8072 | |
1a966eab AC |
8073 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8074 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8075 | The \"Type\" column indicates one of:\n\ |
8076 | \tbreakpoint - normal breakpoint\n\ | |
8077 | \twatchpoint - watchpoint\n\ | |
8078 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8079 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8080 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8081 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8082 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8083 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8084 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8085 | address and file/line number respectively.\n\ |
8086 | \n\ | |
8087 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
8088 | are set to the address of the last breakpoint listed.\n\ | |
8089 | \n\ | |
c906108c | 8090 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8091 | breakpoint set."), |
c906108c SS |
8092 | &maintenanceinfolist); |
8093 | ||
1bedd215 AC |
8094 | add_com ("catch", class_breakpoint, catch_command, _("\ |
8095 | Set catchpoints to catch events.\n\ | |
c906108c SS |
8096 | Raised signals may be caught:\n\ |
8097 | \tcatch signal - all signals\n\ | |
8098 | \tcatch signal <signame> - a particular signal\n\ | |
8099 | Raised exceptions may be caught:\n\ | |
8100 | \tcatch throw - all exceptions, when thrown\n\ | |
8101 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
8102 | \tcatch catch - all exceptions, when caught\n\ | |
8103 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
8104 | Thread or process events may be caught:\n\ | |
8105 | \tcatch thread_start - any threads, just after creation\n\ | |
8106 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8107 | \tcatch thread_join - any threads, just after joins\n\ | |
8108 | Process events may be caught:\n\ | |
8109 | \tcatch start - any processes, just after creation\n\ | |
8110 | \tcatch exit - any processes, just before expiration\n\ | |
8111 | \tcatch fork - calls to fork()\n\ | |
8112 | \tcatch vfork - calls to vfork()\n\ | |
8113 | \tcatch exec - calls to exec()\n\ | |
8114 | Dynamically-linked library events may be caught:\n\ | |
8115 | \tcatch load - loads of any library\n\ | |
8116 | \tcatch load <libname> - loads of a particular library\n\ | |
8117 | \tcatch unload - unloads of any library\n\ | |
8118 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8119 | The act of your program's execution stopping may also be caught:\n\ | |
8120 | \tcatch stop\n\n\ | |
8121 | C++ exceptions may be caught:\n\ | |
8122 | \tcatch throw - all exceptions, when thrown\n\ | |
8123 | \tcatch catch - all exceptions, when caught\n\ | |
8124 | \n\ | |
8125 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8126 | after a fork or vfork is caught.\n\n\ | |
1bedd215 | 8127 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.")); |
c5aa993b | 8128 | |
1bedd215 AC |
8129 | add_com ("tcatch", class_breakpoint, tcatch_command, _("\ |
8130 | Set temporary catchpoints to catch events.\n\ | |
c906108c SS |
8131 | Args like \"catch\" command.\n\ |
8132 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8133 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
1bedd215 | 8134 | by using \"enable delete\" on the catchpoint number.")); |
c5aa993b | 8135 | |
1bedd215 AC |
8136 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8137 | Set a watchpoint for an expression.\n\ | |
c906108c | 8138 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8139 | an expression changes.")); |
5ba2abeb | 8140 | set_cmd_completer (c, location_completer); |
c906108c | 8141 | |
1bedd215 AC |
8142 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8143 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8144 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8145 | an expression is read.")); |
5ba2abeb | 8146 | set_cmd_completer (c, location_completer); |
c906108c | 8147 | |
1bedd215 AC |
8148 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8149 | Set a watchpoint for an expression.\n\ | |
c906108c | 8150 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8151 | an expression is either read or written.")); |
5ba2abeb | 8152 | set_cmd_completer (c, location_completer); |
c906108c SS |
8153 | |
8154 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8155 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8156 | |
8157 | ||
920d2a44 AC |
8158 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8159 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8160 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8161 | &can_use_hw_watchpoints, _("\ | |
8162 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8163 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8164 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8165 | such is available. (However, any hardware watchpoints that were\n\ | |
8166 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8167 | hardware.)"), |
8168 | NULL, | |
920d2a44 | 8169 | show_can_use_hw_watchpoints, |
85c07804 | 8170 | &setlist, &showlist); |
c906108c SS |
8171 | |
8172 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8173 | |
1bedd215 | 8174 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8175 | Breakpoint specific settings\n\ |
8176 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8177 | pending breakpoint behavior"), |
fa8d40ab JJ |
8178 | &breakpoint_set_cmdlist, "set breakpoint ", |
8179 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8180 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8181 | Breakpoint specific settings\n\ |
8182 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8183 | pending breakpoint behavior"), |
fa8d40ab JJ |
8184 | &breakpoint_show_cmdlist, "show breakpoint ", |
8185 | 0/*allow-unknown*/, &showlist); | |
8186 | ||
7915a72c AC |
8187 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8188 | &pending_break_support, _("\ | |
8189 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8190 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8191 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8192 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8193 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8194 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8195 | NULL, |
920d2a44 | 8196 | show_pending_break_support, |
6e1d7d6c AC |
8197 | &breakpoint_set_cmdlist, |
8198 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8199 | |
8200 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8201 | |
8202 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8203 | &automatic_hardware_breakpoints, _("\ | |
8204 | Set automatic usage of hardware breakpoints."), _("\ | |
8205 | Show automatic usage of hardware breakpoints."), _("\ | |
8206 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8207 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8208 | a warning will be emitted for such breakpoints."), | |
8209 | NULL, | |
8210 | show_automatic_hardware_breakpoints, | |
8211 | &breakpoint_set_cmdlist, | |
8212 | &breakpoint_show_cmdlist); | |
8213 | ||
8214 | automatic_hardware_breakpoints = 1; | |
c906108c | 8215 | } |