Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
e74f0f02 DJ |
4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
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 | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, 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" |
c906108c | 52 | |
104c1213 JM |
53 | #include "gdb-events.h" |
54 | ||
c906108c SS |
55 | /* Prototypes for local functions. */ |
56 | ||
c2c6d25f JM |
57 | static void until_break_command_continuation (struct continuation_arg *arg); |
58 | ||
a14ed312 | 59 | static void catch_command_1 (char *, int, int); |
c906108c | 60 | |
a14ed312 | 61 | static void enable_delete_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 64 | |
a14ed312 | 65 | static void enable_once_command (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 68 | |
a14ed312 | 69 | static void disable_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void enable_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 74 | |
a14ed312 | 75 | static void ignore_command (char *, int); |
c906108c | 76 | |
4efb68b1 | 77 | static int breakpoint_re_set_one (void *); |
c906108c | 78 | |
a14ed312 | 79 | static void clear_command (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void catch_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void watch_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 86 | |
e5d66720 PS |
87 | extern void break_at_finish_command (char *, int); |
88 | extern void break_at_finish_at_depth_command (char *, int); | |
7a292a7a | 89 | |
e5d66720 | 90 | extern void tbreak_at_finish_command (char *, int); |
7a292a7a | 91 | |
0101ce28 | 92 | static int break_command_1 (char *, int, int, struct breakpoint *); |
c906108c | 93 | |
a14ed312 | 94 | static void mention (struct breakpoint *); |
c906108c | 95 | |
4d28f7a8 | 96 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 97 | |
9f60f21b | 98 | static void check_duplicates (struct breakpoint *); |
c906108c | 99 | |
76897487 KB |
100 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
101 | ||
88f7da05 KB |
102 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
103 | enum bptype bptype); | |
76897487 | 104 | |
a14ed312 | 105 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 106 | |
a14ed312 | 107 | static void breakpoints_info (char *, int); |
c906108c | 108 | |
a14ed312 | 109 | static void breakpoint_1 (int, int); |
c906108c | 110 | |
a14ed312 | 111 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 112 | |
4efb68b1 | 113 | static int breakpoint_cond_eval (void *); |
c906108c | 114 | |
4efb68b1 | 115 | static void cleanup_executing_breakpoints (void *); |
c906108c | 116 | |
a14ed312 | 117 | static void commands_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | static void condition_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | static int get_number_trailer (char **, int); |
c906108c | 122 | |
0101ce28 JJ |
123 | static int do_captured_parse_breakpoint (struct ui_out *, void *); |
124 | ||
a14ed312 | 125 | void set_breakpoint_count (int); |
c906108c | 126 | |
c5aa993b JM |
127 | typedef enum |
128 | { | |
129 | mark_inserted, | |
130 | mark_uninserted | |
131 | } | |
132 | insertion_state_t; | |
c906108c | 133 | |
0bde7532 | 134 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 135 | |
a14ed312 | 136 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
137 | |
138 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 139 | |
c5aa993b JM |
140 | typedef struct |
141 | { | |
142 | enum exception_event_kind kind; | |
b5de0fa7 | 143 | int enable_p; |
c5aa993b JM |
144 | } |
145 | args_for_catchpoint_enable; | |
c906108c | 146 | |
4efb68b1 | 147 | static int watchpoint_check (void *); |
c906108c | 148 | |
4efb68b1 | 149 | static int cover_target_enable_exception_callback (void *); |
c906108c | 150 | |
a14ed312 | 151 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 152 | |
a14ed312 | 153 | static void create_longjmp_breakpoint (char *); |
c906108c | 154 | |
1900040c MS |
155 | static void create_overlay_event_breakpoint (char *); |
156 | ||
a14ed312 | 157 | static int hw_breakpoint_used_count (void); |
c906108c | 158 | |
a14ed312 | 159 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 160 | |
a14ed312 | 161 | static void hbreak_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void thbreak_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void watch_command_1 (char *, int, int); |
c906108c | 166 | |
a14ed312 | 167 | static void rwatch_command (char *, int); |
c906108c | 168 | |
a14ed312 | 169 | static void awatch_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 172 | |
a14ed312 KB |
173 | static void solib_load_unload_1 (char *hookname, |
174 | int tempflag, | |
175 | char *dll_pathname, | |
176 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 177 | |
a14ed312 KB |
178 | static void create_fork_vfork_event_catchpoint (int tempflag, |
179 | char *cond_string, | |
180 | enum bptype bp_kind); | |
7a292a7a | 181 | |
a14ed312 KB |
182 | static void break_at_finish_at_depth_command_1 (char *arg, |
183 | int flag, int from_tty); | |
7a292a7a | 184 | |
a14ed312 | 185 | static void break_at_finish_command_1 (char *arg, int flag, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 188 | |
a14ed312 | 189 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 190 | |
a14ed312 | 191 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 192 | |
a14ed312 | 193 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 194 | |
a14ed312 | 195 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 196 | |
a14ed312 | 197 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 198 | |
d85310f7 MS |
199 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
200 | enum exception_event_kind ex_event, | |
201 | struct symtab_and_line *sal); | |
7a292a7a | 202 | |
d85310f7 MS |
203 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
204 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 205 | |
a14ed312 | 206 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 207 | |
a14ed312 | 208 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 209 | |
c906108c SS |
210 | /* Prototypes for exported functions. */ |
211 | ||
c906108c SS |
212 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
213 | if such is available. */ | |
214 | static int can_use_hw_watchpoints; | |
215 | ||
fa8d40ab JJ |
216 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
217 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
218 | for unrecognized breakpoint locations. | |
219 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
220 | static enum auto_boolean pending_break_support; | |
221 | ||
a14ed312 | 222 | void _initialize_breakpoint (void); |
c906108c | 223 | |
c5aa993b | 224 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 225 | |
c906108c SS |
226 | /* Are we executing breakpoint commands? */ |
227 | static int executing_breakpoint_commands; | |
228 | ||
c02f5703 MS |
229 | /* Are overlay event breakpoints enabled? */ |
230 | static int overlay_events_enabled; | |
231 | ||
c906108c SS |
232 | /* Walk the following statement or block through all breakpoints. |
233 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
234 | breakpoint. */ | |
235 | ||
5c44784c | 236 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 237 | |
5c44784c JM |
238 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
239 | for (B = breakpoint_chain; \ | |
240 | B ? (TMP=B->next, 1): 0; \ | |
241 | B = TMP) | |
c906108c | 242 | |
7cc221ef DJ |
243 | /* Similar iterators for the low-level breakpoints. */ |
244 | ||
245 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
246 | ||
247 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
248 | for (B = bp_location_chain; \ | |
249 | B ? (TMP=B->next, 1): 0; \ | |
250 | B = TMP) | |
251 | ||
c906108c SS |
252 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
253 | ||
254 | int show_breakpoint_hit_counts = 1; | |
255 | ||
7cc221ef | 256 | /* Chains of all breakpoints defined. */ |
c906108c SS |
257 | |
258 | struct breakpoint *breakpoint_chain; | |
259 | ||
7cc221ef DJ |
260 | struct bp_location *bp_location_chain; |
261 | ||
c906108c SS |
262 | /* Number of last breakpoint made. */ |
263 | ||
264 | int breakpoint_count; | |
265 | ||
c5aa993b JM |
266 | /* Pointer to current exception event record */ |
267 | static struct exception_event_record *current_exception_event; | |
c906108c | 268 | |
f83f82bc AC |
269 | /* Indicator of whether exception catchpoints should be nuked between |
270 | runs of a program. */ | |
271 | int deprecated_exception_catchpoints_are_fragile = 0; | |
c5aa993b | 272 | |
c906108c | 273 | /* Indicator of when exception catchpoints set-up should be |
f83f82bc AC |
274 | reinitialized -- e.g. when program is re-run. */ |
275 | int deprecated_exception_support_initialized = 0; | |
c906108c SS |
276 | |
277 | /* This function returns a pointer to the string representation of the | |
278 | pathname of the dynamically-linked library that has just been | |
279 | loaded. | |
280 | ||
281 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
282 | or undefined results are guaranteed. | |
283 | ||
284 | This string's contents are only valid immediately after the | |
285 | inferior has stopped in the dynamic linker hook, and becomes | |
286 | invalid as soon as the inferior is continued. Clients should make | |
287 | a copy of this string if they wish to continue the inferior and | |
288 | then access the string. */ | |
289 | ||
290 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
291 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
292 | #endif | |
293 | ||
294 | /* This function returns a pointer to the string representation of the | |
295 | pathname of the dynamically-linked library that has just been | |
296 | unloaded. | |
297 | ||
298 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
299 | TRUE, or undefined results are guaranteed. | |
300 | ||
301 | This string's contents are only valid immediately after the | |
302 | inferior has stopped in the dynamic linker hook, and becomes | |
303 | invalid as soon as the inferior is continued. Clients should make | |
304 | a copy of this string if they wish to continue the inferior and | |
305 | then access the string. */ | |
306 | ||
307 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
308 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
309 | #endif | |
310 | ||
311 | /* This function is called by the "catch load" command. It allows the | |
312 | debugger to be notified by the dynamic linker when a specified | |
313 | library file (or any library file, if filename is NULL) is loaded. */ | |
314 | ||
315 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
316 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
317 | error ("catch of library loads not yet implemented on this platform") | |
318 | #endif | |
319 | ||
320 | /* This function is called by the "catch unload" command. It allows | |
321 | the debugger to be notified by the dynamic linker when a specified | |
322 | library file (or any library file, if filename is NULL) is | |
323 | unloaded. */ | |
324 | ||
325 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
326 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
327 | error ("catch of library unloads not yet implemented on this platform") | |
328 | #endif | |
329 | ||
468d015d JJ |
330 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
331 | static int | |
332 | breakpoint_enabled (struct breakpoint *b) | |
333 | { | |
0101ce28 | 334 | return (b->enable_state == bp_enabled && !b->pending); |
468d015d JJ |
335 | } |
336 | ||
c906108c SS |
337 | /* Set breakpoint count to NUM. */ |
338 | ||
339 | void | |
fba45db2 | 340 | set_breakpoint_count (int num) |
c906108c SS |
341 | { |
342 | breakpoint_count = num; | |
343 | set_internalvar (lookup_internalvar ("bpnum"), | |
344 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
345 | } | |
346 | ||
347 | /* Used in run_command to zero the hit count when a new run starts. */ | |
348 | ||
349 | void | |
fba45db2 | 350 | clear_breakpoint_hit_counts (void) |
c906108c SS |
351 | { |
352 | struct breakpoint *b; | |
353 | ||
354 | ALL_BREAKPOINTS (b) | |
355 | b->hit_count = 0; | |
356 | } | |
357 | ||
358 | /* Default address, symtab and line to put a breakpoint at | |
359 | for "break" command with no arg. | |
360 | if default_breakpoint_valid is zero, the other three are | |
361 | not valid, and "break" with no arg is an error. | |
362 | ||
363 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
364 | ||
365 | int default_breakpoint_valid; | |
366 | CORE_ADDR default_breakpoint_address; | |
367 | struct symtab *default_breakpoint_symtab; | |
368 | int default_breakpoint_line; | |
369 | \f | |
370 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
371 | Advance *PP after the string and any trailing whitespace. | |
372 | ||
373 | Currently the string can either be a number or "$" followed by the name | |
374 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
375 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
376 | ||
377 | TRAILER is a character which can be found after the number; most | |
378 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 379 | static int |
fba45db2 | 380 | get_number_trailer (char **pp, int trailer) |
c906108c | 381 | { |
5c44784c | 382 | int retval = 0; /* default */ |
c906108c SS |
383 | char *p = *pp; |
384 | ||
385 | if (p == NULL) | |
386 | /* Empty line means refer to the last breakpoint. */ | |
387 | return breakpoint_count; | |
388 | else if (*p == '$') | |
389 | { | |
390 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 391 | to pass to lookup_internalvar(). */ |
c906108c SS |
392 | char *varname; |
393 | char *start = ++p; | |
278cd55f | 394 | struct value *val; |
c906108c SS |
395 | |
396 | while (isalnum (*p) || *p == '_') | |
397 | p++; | |
398 | varname = (char *) alloca (p - start + 1); | |
399 | strncpy (varname, start, p - start); | |
400 | varname[p - start] = '\0'; | |
401 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
402 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
403 | retval = (int) value_as_long (val); | |
404 | else | |
405 | { | |
406 | printf_filtered ("Convenience variable must have integer value.\n"); | |
407 | retval = 0; | |
408 | } | |
c906108c SS |
409 | } |
410 | else | |
411 | { | |
412 | if (*p == '-') | |
413 | ++p; | |
414 | while (*p >= '0' && *p <= '9') | |
415 | ++p; | |
416 | if (p == *pp) | |
417 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
418 | { |
419 | /* Skip non-numeric token */ | |
420 | while (*p && !isspace((int) *p)) | |
421 | ++p; | |
422 | /* Return zero, which caller must interpret as error. */ | |
423 | retval = 0; | |
424 | } | |
425 | else | |
426 | retval = atoi (*pp); | |
427 | } | |
428 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
429 | { | |
430 | /* Trailing junk: return 0 and let caller print error msg. */ | |
431 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
432 | ++p; | |
433 | retval = 0; | |
c906108c | 434 | } |
c906108c SS |
435 | while (isspace (*p)) |
436 | p++; | |
437 | *pp = p; | |
438 | return retval; | |
439 | } | |
5c44784c | 440 | |
11cf8741 | 441 | |
5c44784c JM |
442 | /* Like get_number_trailer, but don't allow a trailer. */ |
443 | int | |
fba45db2 | 444 | get_number (char **pp) |
5c44784c JM |
445 | { |
446 | return get_number_trailer (pp, '\0'); | |
447 | } | |
448 | ||
449 | /* Parse a number or a range. | |
450 | * A number will be of the form handled by get_number. | |
451 | * A range will be of the form <number1> - <number2>, and | |
452 | * will represent all the integers between number1 and number2, | |
453 | * inclusive. | |
454 | * | |
455 | * While processing a range, this fuction is called iteratively; | |
456 | * At each call it will return the next value in the range. | |
457 | * | |
458 | * At the beginning of parsing a range, the char pointer PP will | |
459 | * be advanced past <number1> and left pointing at the '-' token. | |
460 | * Subsequent calls will not advance the pointer until the range | |
461 | * is completed. The call that completes the range will advance | |
462 | * pointer PP past <number2>. | |
463 | */ | |
464 | ||
465 | int | |
fba45db2 | 466 | get_number_or_range (char **pp) |
5c44784c JM |
467 | { |
468 | static int last_retval, end_value; | |
469 | static char *end_ptr; | |
470 | static int in_range = 0; | |
471 | ||
472 | if (**pp != '-') | |
473 | { | |
474 | /* Default case: pp is pointing either to a solo number, | |
475 | or to the first number of a range. */ | |
476 | last_retval = get_number_trailer (pp, '-'); | |
477 | if (**pp == '-') | |
478 | { | |
479 | char **temp; | |
480 | ||
481 | /* This is the start of a range (<number1> - <number2>). | |
482 | Skip the '-', parse and remember the second number, | |
483 | and also remember the end of the final token. */ | |
484 | ||
485 | temp = &end_ptr; | |
486 | end_ptr = *pp + 1; | |
487 | while (isspace ((int) *end_ptr)) | |
488 | end_ptr++; /* skip white space */ | |
489 | end_value = get_number (temp); | |
490 | if (end_value < last_retval) | |
491 | { | |
492 | error ("inverted range"); | |
493 | } | |
494 | else if (end_value == last_retval) | |
495 | { | |
496 | /* degenerate range (number1 == number2). Advance the | |
497 | token pointer so that the range will be treated as a | |
498 | single number. */ | |
499 | *pp = end_ptr; | |
500 | } | |
501 | else | |
502 | in_range = 1; | |
503 | } | |
504 | } | |
505 | else if (! in_range) | |
506 | error ("negative value"); | |
507 | else | |
508 | { | |
509 | /* pp points to the '-' that betokens a range. All | |
510 | number-parsing has already been done. Return the next | |
511 | integer value (one greater than the saved previous value). | |
512 | Do not advance the token pointer 'pp' until the end of range | |
513 | is reached. */ | |
514 | ||
515 | if (++last_retval == end_value) | |
516 | { | |
517 | /* End of range reached; advance token pointer. */ | |
518 | *pp = end_ptr; | |
519 | in_range = 0; | |
520 | } | |
521 | } | |
522 | return last_retval; | |
523 | } | |
524 | ||
525 | ||
c906108c SS |
526 | \f |
527 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
528 | ||
529 | static void | |
fba45db2 | 530 | condition_command (char *arg, int from_tty) |
c906108c | 531 | { |
52f0bd74 | 532 | struct breakpoint *b; |
c906108c | 533 | char *p; |
52f0bd74 | 534 | int bnum; |
c906108c SS |
535 | |
536 | if (arg == 0) | |
537 | error_no_arg ("breakpoint number"); | |
538 | ||
539 | p = arg; | |
540 | bnum = get_number (&p); | |
5c44784c JM |
541 | if (bnum == 0) |
542 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
543 | |
544 | ALL_BREAKPOINTS (b) | |
545 | if (b->number == bnum) | |
c5aa993b JM |
546 | { |
547 | if (b->cond) | |
548 | { | |
b8c9b27d | 549 | xfree (b->cond); |
c5aa993b JM |
550 | b->cond = 0; |
551 | } | |
552 | if (b->cond_string != NULL) | |
b8c9b27d | 553 | xfree (b->cond_string); |
c906108c | 554 | |
c5aa993b JM |
555 | if (*p == 0) |
556 | { | |
557 | b->cond = 0; | |
558 | b->cond_string = NULL; | |
559 | if (from_tty) | |
560 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
561 | } | |
562 | else | |
563 | { | |
564 | arg = p; | |
565 | /* I don't know if it matters whether this is the string the user | |
566 | typed in or the decompiled expression. */ | |
567 | b->cond_string = savestring (arg, strlen (arg)); | |
0101ce28 JJ |
568 | if (!b->pending) |
569 | { | |
570 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
571 | if (*arg) | |
572 | error ("Junk at end of expression"); | |
573 | } | |
c5aa993b JM |
574 | } |
575 | breakpoints_changed (); | |
221ea385 | 576 | breakpoint_modify_event (b->number); |
c5aa993b JM |
577 | return; |
578 | } | |
c906108c SS |
579 | |
580 | error ("No breakpoint number %d.", bnum); | |
581 | } | |
582 | ||
c906108c | 583 | static void |
fba45db2 | 584 | commands_command (char *arg, int from_tty) |
c906108c | 585 | { |
52f0bd74 | 586 | struct breakpoint *b; |
c906108c | 587 | char *p; |
52f0bd74 | 588 | int bnum; |
c906108c SS |
589 | struct command_line *l; |
590 | ||
591 | /* If we allowed this, we would have problems with when to | |
592 | free the storage, if we change the commands currently | |
593 | being read from. */ | |
594 | ||
595 | if (executing_breakpoint_commands) | |
596 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
597 | ||
598 | p = arg; | |
599 | bnum = get_number (&p); | |
5c44784c | 600 | |
c906108c SS |
601 | if (p && *p) |
602 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 603 | |
c906108c SS |
604 | ALL_BREAKPOINTS (b) |
605 | if (b->number == bnum) | |
9ebf4acf AC |
606 | { |
607 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
608 | bnum); | |
609 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
610 | l = read_command_lines (tmpbuf, from_tty); | |
611 | do_cleanups (cleanups); | |
612 | free_command_lines (&b->commands); | |
613 | b->commands = l; | |
614 | breakpoints_changed (); | |
615 | breakpoint_modify_event (b->number); | |
616 | return; | |
c5aa993b | 617 | } |
c906108c SS |
618 | error ("No breakpoint number %d.", bnum); |
619 | } | |
620 | \f | |
621 | /* Like target_read_memory() but if breakpoints are inserted, return | |
622 | the shadow contents instead of the breakpoints themselves. | |
623 | ||
624 | Read "memory data" from whatever target or inferior we have. | |
625 | Returns zero if successful, errno value if not. EIO is used | |
626 | for address out of bounds. If breakpoints are inserted, returns | |
627 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
628 | ||
629 | int | |
fba45db2 | 630 | read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
631 | { |
632 | int status; | |
ffce0d52 | 633 | struct bp_location *b; |
c906108c SS |
634 | CORE_ADDR bp_addr = 0; |
635 | int bp_size = 0; | |
636 | ||
637 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
638 | /* No breakpoints on this machine. */ | |
639 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 640 | |
ffce0d52 | 641 | ALL_BP_LOCATIONS (b) |
c5aa993b | 642 | { |
ffce0d52 DJ |
643 | if (b->owner->type == bp_none) |
644 | warning ("reading through apparently deleted breakpoint #%d?", | |
645 | b->owner->number); | |
646 | ||
647 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 648 | continue; |
ffce0d52 | 649 | if (!b->inserted) |
c5aa993b JM |
650 | continue; |
651 | /* Addresses and length of the part of the breakpoint that | |
652 | we need to copy. */ | |
653 | /* XXXX The m68k, sh and h8300 have different local and remote | |
654 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
655 | correctly determine the breakpoints memory address and size | |
656 | for these targets. */ | |
ffce0d52 | 657 | bp_addr = b->address; |
c5aa993b JM |
658 | bp_size = 0; |
659 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
660 | continue; | |
661 | if (bp_size == 0) | |
662 | /* bp isn't valid */ | |
663 | continue; | |
664 | if (bp_addr + bp_size <= memaddr) | |
665 | /* The breakpoint is entirely before the chunk of memory we | |
666 | are reading. */ | |
667 | continue; | |
668 | if (bp_addr >= memaddr + len) | |
669 | /* The breakpoint is entirely after the chunk of memory we are | |
670 | reading. */ | |
671 | continue; | |
672 | /* Copy the breakpoint from the shadow contents, and recurse for | |
673 | the things before and after. */ | |
c906108c | 674 | { |
c5aa993b JM |
675 | /* Offset within shadow_contents. */ |
676 | int bptoffset = 0; | |
c906108c | 677 | |
c5aa993b JM |
678 | if (bp_addr < memaddr) |
679 | { | |
680 | /* Only copy the second part of the breakpoint. */ | |
681 | bp_size -= memaddr - bp_addr; | |
682 | bptoffset = memaddr - bp_addr; | |
683 | bp_addr = memaddr; | |
684 | } | |
685 | ||
686 | if (bp_addr + bp_size > memaddr + len) | |
687 | { | |
688 | /* Only copy the first part of the breakpoint. */ | |
689 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
690 | } | |
691 | ||
692 | memcpy (myaddr + bp_addr - memaddr, | |
ffce0d52 | 693 | b->shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
694 | |
695 | if (bp_addr > memaddr) | |
696 | { | |
697 | /* Copy the section of memory before the breakpoint. */ | |
698 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
699 | if (status != 0) | |
700 | return status; | |
701 | } | |
702 | ||
703 | if (bp_addr + bp_size < memaddr + len) | |
704 | { | |
705 | /* Copy the section of memory after the breakpoint. */ | |
d85310f7 MS |
706 | status = read_memory_nobpt (bp_addr + bp_size, |
707 | myaddr + bp_addr + bp_size - memaddr, | |
708 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
709 | if (status != 0) |
710 | return status; | |
711 | } | |
712 | return 0; | |
c906108c | 713 | } |
c5aa993b | 714 | } |
c906108c SS |
715 | /* Nothing overlaps. Just call read_memory_noerr. */ |
716 | return target_read_memory (memaddr, myaddr, len); | |
717 | } | |
c906108c | 718 | \f |
c5aa993b | 719 | |
687595f9 | 720 | /* A wrapper function for inserting catchpoints. */ |
3f8091c1 | 721 | static int |
687595f9 DJ |
722 | insert_catchpoint (struct ui_out *uo, void *args) |
723 | { | |
724 | struct breakpoint *b = (struct breakpoint *) args; | |
725 | int val = -1; | |
726 | ||
727 | switch (b->type) | |
728 | { | |
729 | case bp_catch_fork: | |
730 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
731 | break; | |
732 | case bp_catch_vfork: | |
733 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
734 | break; | |
735 | case bp_catch_exec: | |
736 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); | |
737 | break; | |
738 | default: | |
1171114a | 739 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); |
687595f9 DJ |
740 | break; |
741 | } | |
742 | ||
743 | if (val < 0) | |
744 | throw_exception (RETURN_ERROR); | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
7270d8f2 OF |
749 | /* Helper routine: free the value chain for a breakpoint (watchpoint). */ |
750 | ||
751 | static void free_valchain (struct bp_location *b) | |
752 | { | |
753 | struct value *v; | |
754 | struct value *n; | |
755 | ||
756 | /* Free the saved value chain. We will construct a new one | |
757 | the next time the watchpoint is inserted. */ | |
758 | for (v = b->owner->val_chain; v; v = n) | |
759 | { | |
760 | n = v->next; | |
761 | value_free (v); | |
762 | } | |
763 | b->owner->val_chain = NULL; | |
764 | } | |
765 | ||
879bfdc2 DJ |
766 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
767 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
768 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
769 | ||
770 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
771 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 772 | static int |
879bfdc2 | 773 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
774 | struct ui_file *tmp_error_stream, |
775 | int *disabled_breaks, int *process_warning, | |
776 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
777 | { |
778 | int val = 0; | |
779 | ||
780 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
781 | breakpoints should not be inserted. */ | |
468d015d | 782 | if (!breakpoint_enabled (bpt->owner)) |
879bfdc2 DJ |
783 | return 0; |
784 | ||
785 | if (bpt->inserted || bpt->duplicate) | |
786 | return 0; | |
787 | ||
788 | if (bpt->loc_type == bp_loc_software_breakpoint | |
789 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
790 | { | |
791 | /* First check to see if we have to handle an overlay. */ | |
792 | if (overlay_debugging == ovly_off | |
793 | || bpt->section == NULL | |
794 | || !(section_is_overlay (bpt->section))) | |
795 | { | |
796 | /* No overlay handling: just set the breakpoint. */ | |
797 | ||
798 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
799 | val = target_insert_hw_breakpoint (bpt->address, | |
800 | bpt->shadow_contents); | |
801 | else | |
802 | val = target_insert_breakpoint (bpt->address, | |
803 | bpt->shadow_contents); | |
804 | } | |
805 | else | |
806 | { | |
807 | /* This breakpoint is in an overlay section. | |
808 | Shall we set a breakpoint at the LMA? */ | |
809 | if (!overlay_events_enabled) | |
810 | { | |
811 | /* Yes -- overlay event support is not active, | |
812 | so we must try to set a breakpoint at the LMA. | |
813 | This will not work for a hardware breakpoint. */ | |
814 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
815 | warning ("hardware breakpoint %d not supported in overlay!\n", | |
816 | bpt->owner->number); | |
817 | else | |
818 | { | |
819 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
820 | bpt->section); | |
821 | /* Set a software (trap) breakpoint at the LMA. */ | |
822 | val = target_insert_breakpoint (addr, bpt->shadow_contents); | |
823 | if (val != 0) | |
824 | fprintf_unfiltered (tmp_error_stream, | |
825 | "Overlay breakpoint %d failed: in ROM?", | |
826 | bpt->owner->number); | |
827 | } | |
828 | } | |
829 | /* Shall we set a breakpoint at the VMA? */ | |
830 | if (section_is_mapped (bpt->section)) | |
831 | { | |
832 | /* Yes. This overlay section is mapped into memory. */ | |
833 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
834 | val = target_insert_hw_breakpoint (bpt->address, | |
835 | bpt->shadow_contents); | |
836 | else | |
837 | val = target_insert_breakpoint (bpt->address, | |
838 | bpt->shadow_contents); | |
839 | } | |
840 | else | |
841 | { | |
842 | /* No. This breakpoint will not be inserted. | |
843 | No error, but do not mark the bp as 'inserted'. */ | |
844 | return 0; | |
845 | } | |
846 | } | |
847 | ||
848 | if (val) | |
849 | { | |
850 | /* Can't set the breakpoint. */ | |
851 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
852 | if (DISABLE_UNSETTABLE_BREAK (bpt->address)) | |
853 | { | |
854 | /* See also: disable_breakpoints_in_shlibs. */ | |
855 | val = 0; | |
856 | bpt->owner->enable_state = bp_shlib_disabled; | |
857 | if (!*disabled_breaks) | |
858 | { | |
859 | fprintf_unfiltered (tmp_error_stream, | |
860 | "Cannot insert breakpoint %d.\n", | |
861 | bpt->owner->number); | |
862 | fprintf_unfiltered (tmp_error_stream, | |
863 | "Temporarily disabling shared library breakpoints:\n"); | |
864 | } | |
865 | *disabled_breaks = 1; | |
866 | fprintf_unfiltered (tmp_error_stream, | |
867 | "breakpoint #%d\n", bpt->owner->number); | |
868 | } | |
869 | else | |
870 | #endif | |
871 | { | |
872 | #ifdef ONE_PROCESS_WRITETEXT | |
873 | *process_warning = 1; | |
874 | #endif | |
875 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
876 | { | |
877 | *hw_breakpoint_error = 1; | |
878 | fprintf_unfiltered (tmp_error_stream, | |
879 | "Cannot insert hardware breakpoint %d.\n", | |
880 | bpt->owner->number); | |
881 | } | |
882 | else | |
883 | { | |
884 | fprintf_unfiltered (tmp_error_stream, | |
885 | "Cannot insert breakpoint %d.\n", | |
886 | bpt->owner->number); | |
887 | fprintf_filtered (tmp_error_stream, | |
888 | "Error accessing memory address "); | |
889 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
890 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
891 | safe_strerror (val)); | |
892 | } | |
893 | ||
894 | } | |
895 | } | |
896 | else | |
897 | bpt->inserted = 1; | |
898 | ||
899 | return val; | |
900 | } | |
901 | ||
902 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
903 | /* NOTE drow/2003-09-08: This state only exists for removing | |
904 | watchpoints. It's not clear that it's necessary... */ | |
905 | && bpt->owner->disposition != disp_del_at_next_stop) | |
906 | { | |
907 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
908 | based on the expression. Ideally this should happen at a higher level, | |
909 | and there should be one bp_location for each computed address we | |
910 | must watch. As soon as a many-to-one mapping is available I'll | |
911 | convert this. */ | |
912 | ||
7789d0fa | 913 | int within_current_scope; |
879bfdc2 DJ |
914 | struct value *mark = value_mark (); |
915 | struct value *v; | |
7789d0fa | 916 | struct frame_id saved_frame_id; |
879bfdc2 | 917 | |
7789d0fa | 918 | /* Save the current frame's ID so we can restore it after |
879bfdc2 DJ |
919 | evaluating the watchpoint expression on its own frame. */ |
920 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
921 | took a frame parameter, so that we didn't have to change the | |
922 | selected frame. */ | |
7789d0fa | 923 | saved_frame_id = get_frame_id (deprecated_selected_frame); |
879bfdc2 DJ |
924 | |
925 | /* Determine if the watchpoint is within scope. */ | |
926 | if (bpt->owner->exp_valid_block == NULL) | |
927 | within_current_scope = 1; | |
928 | else | |
929 | { | |
930 | struct frame_info *fi; | |
931 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
932 | within_current_scope = (fi != NULL); | |
933 | if (within_current_scope) | |
934 | select_frame (fi); | |
935 | } | |
936 | ||
937 | if (within_current_scope) | |
938 | { | |
7270d8f2 OF |
939 | free_valchain (bpt); |
940 | ||
879bfdc2 DJ |
941 | /* Evaluate the expression and cut the chain of values |
942 | produced off from the value chain. | |
943 | ||
944 | Make sure the value returned isn't lazy; we use | |
945 | laziness to determine what memory GDB actually needed | |
946 | in order to compute the value of the expression. */ | |
947 | v = evaluate_expression (bpt->owner->exp); | |
948 | VALUE_CONTENTS (v); | |
949 | value_release_to_mark (mark); | |
950 | ||
951 | bpt->owner->val_chain = v; | |
952 | bpt->inserted = 1; | |
953 | ||
954 | /* Look at each value on the value chain. */ | |
955 | for (; v; v = v->next) | |
956 | { | |
957 | /* If it's a memory location, and GDB actually needed | |
958 | its contents to evaluate the expression, then we | |
959 | must watch it. */ | |
960 | if (VALUE_LVAL (v) == lval_memory | |
961 | && ! VALUE_LAZY (v)) | |
962 | { | |
963 | struct type *vtype = check_typedef (VALUE_TYPE (v)); | |
964 | ||
965 | /* We only watch structs and arrays if user asked | |
966 | for it explicitly, never if they just happen to | |
967 | appear in the middle of some value chain. */ | |
968 | if (v == bpt->owner->val_chain | |
969 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
970 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
971 | { | |
972 | CORE_ADDR addr; | |
973 | int len, type; | |
974 | ||
975 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
976 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
977 | type = hw_write; | |
978 | if (bpt->owner->type == bp_read_watchpoint) | |
979 | type = hw_read; | |
980 | else if (bpt->owner->type == bp_access_watchpoint) | |
981 | type = hw_access; | |
982 | ||
983 | val = target_insert_watchpoint (addr, len, type); | |
984 | if (val == -1) | |
985 | { | |
986 | /* Don't exit the loop, try to insert | |
987 | every value on the value chain. That's | |
988 | because we will be removing all the | |
989 | watches below, and removing a | |
990 | watchpoint we didn't insert could have | |
991 | adverse effects. */ | |
992 | bpt->inserted = 0; | |
993 | } | |
994 | val = 0; | |
995 | } | |
996 | } | |
997 | } | |
998 | /* Failure to insert a watchpoint on any memory value in the | |
999 | value chain brings us here. */ | |
1000 | if (!bpt->inserted) | |
1001 | { | |
0bde7532 | 1002 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
1003 | *hw_breakpoint_error = 1; |
1004 | fprintf_unfiltered (tmp_error_stream, | |
1005 | "Could not insert hardware watchpoint %d.\n", | |
1006 | bpt->owner->number); | |
1007 | val = -1; | |
1008 | } | |
1009 | } | |
1010 | else | |
1011 | { | |
1012 | printf_filtered ("Hardware watchpoint %d deleted ", bpt->owner->number); | |
1013 | printf_filtered ("because the program has left the block \n"); | |
1014 | printf_filtered ("in which its expression is valid.\n"); | |
1015 | if (bpt->owner->related_breakpoint) | |
1016 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
1017 | bpt->owner->disposition = disp_del_at_next_stop; | |
1018 | } | |
1019 | ||
7789d0fa AC |
1020 | /* Restore the selected frame. */ |
1021 | select_frame (frame_find_by_id (saved_frame_id)); | |
879bfdc2 DJ |
1022 | |
1023 | return val; | |
1024 | } | |
1025 | ||
1026 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
1027 | { | |
1028 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1029 | breakpoint. Once again, it would be better if this was represented | |
1030 | as two bp_locations. */ | |
1031 | ||
1032 | /* If we get here, we must have a callback mechanism for exception | |
1033 | events -- with g++ style embedded label support, we insert | |
1034 | ordinary breakpoints and not catchpoints. */ | |
1035 | val = target_insert_breakpoint (bpt->address, bpt->shadow_contents); | |
1036 | if (val) | |
1037 | { | |
1038 | /* Couldn't set breakpoint for some reason */ | |
1039 | fprintf_unfiltered (tmp_error_stream, | |
1040 | "Cannot insert catchpoint %d; disabling it.\n", | |
1041 | bpt->owner->number); | |
1042 | fprintf_filtered (tmp_error_stream, | |
1043 | "Error accessing memory address "); | |
1044 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
1045 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
1046 | safe_strerror (val)); | |
1047 | bpt->owner->enable_state = bp_disabled; | |
1048 | } | |
1049 | else | |
1050 | { | |
1051 | /* Bp set, now make sure callbacks are enabled */ | |
1052 | /* Format possible error msg */ | |
1053 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1054 | bpt->owner->number); | |
1055 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1056 | int val; | |
1057 | args_for_catchpoint_enable args; | |
1058 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1059 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1060 | args.enable_p = 1; | |
1061 | val = catch_errors (cover_target_enable_exception_callback, | |
1062 | &args, message, RETURN_MASK_ALL); | |
1063 | do_cleanups (cleanups); | |
1064 | if (val != 0 && val != -1) | |
1065 | bpt->inserted = 1; | |
1066 | ||
1067 | /* Check if something went wrong; val == 0 can be ignored */ | |
1068 | if (val == -1) | |
1069 | { | |
1070 | /* something went wrong */ | |
1071 | fprintf_unfiltered (tmp_error_stream, | |
1072 | "Cannot insert catchpoint %d; disabling it.\n", | |
1073 | bpt->owner->number); | |
1074 | bpt->owner->enable_state = bp_disabled; | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | return val; | |
1079 | } | |
1080 | ||
1081 | else if (bpt->owner->type == bp_catch_fork | |
1082 | || bpt->owner->type == bp_catch_vfork | |
1083 | || bpt->owner->type == bp_catch_exec) | |
1084 | { | |
1085 | char *prefix = xstrprintf ("warning: inserting catchpoint %d: ", | |
1086 | bpt->owner->number); | |
1087 | struct cleanup *cleanups = make_cleanup (xfree, prefix); | |
1088 | val = catch_exceptions (uiout, insert_catchpoint, bpt->owner, prefix, | |
1089 | RETURN_MASK_ERROR); | |
1090 | do_cleanups (cleanups); | |
1091 | if (val < 0) | |
1092 | bpt->owner->enable_state = bp_disabled; | |
1093 | else | |
1094 | bpt->inserted = 1; | |
1640b821 DJ |
1095 | |
1096 | /* We've already printed an error message if there was a problem | |
1097 | inserting this catchpoint, and we've disabled the catchpoint, | |
1098 | so just return success. */ | |
1099 | return 0; | |
879bfdc2 DJ |
1100 | } |
1101 | ||
1102 | return 0; | |
1103 | } | |
1104 | ||
c906108c SS |
1105 | /* insert_breakpoints is used when starting or continuing the program. |
1106 | remove_breakpoints is used when the program stops. | |
1107 | Both return zero if successful, | |
1108 | or an `errno' value if could not write the inferior. */ | |
1109 | ||
1110 | int | |
fba45db2 | 1111 | insert_breakpoints (void) |
c906108c | 1112 | { |
879bfdc2 | 1113 | struct bp_location *b, *temp; |
53a5351d | 1114 | int return_val = 0; /* return success code. */ |
c906108c SS |
1115 | int val = 0; |
1116 | int disabled_breaks = 0; | |
81d0cc19 GS |
1117 | int hw_breakpoint_error = 0; |
1118 | int process_warning = 0; | |
c906108c | 1119 | |
81d0cc19 GS |
1120 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1121 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1122 | ||
1123 | /* Explicitly mark the warning -- this will only be printed if | |
1124 | there was an error. */ | |
1125 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1126 | |
879bfdc2 DJ |
1127 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1128 | { | |
1129 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1130 | breakpoints should not be inserted. */ | |
468d015d | 1131 | if (!breakpoint_enabled (b->owner)) |
879bfdc2 DJ |
1132 | continue; |
1133 | ||
1134 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when | |
1135 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1136 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1137 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1138 | { | |
1139 | struct value *val; | |
1140 | val = evaluate_expression (b->owner->exp); | |
1141 | release_value (val); | |
1142 | if (VALUE_LAZY (val)) | |
1143 | value_fetch_lazy (val); | |
1144 | b->owner->val = val; | |
1145 | } | |
a881cf8e | 1146 | |
879bfdc2 DJ |
1147 | val = insert_bp_location (b, tmp_error_stream, |
1148 | &disabled_breaks, &process_warning, | |
1149 | &hw_breakpoint_error); | |
1150 | if (val) | |
1151 | return_val = val; | |
1152 | } | |
c906108c | 1153 | |
879bfdc2 | 1154 | if (return_val) |
81d0cc19 GS |
1155 | { |
1156 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1157 | message about possibly exhausted resources. */ | |
879bfdc2 | 1158 | if (hw_breakpoint_error) |
81d0cc19 | 1159 | { |
c6510018 MS |
1160 | fprintf_unfiltered (tmp_error_stream, |
1161 | "Could not insert hardware breakpoints:\n\ | |
1162 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1163 | } |
c6510018 | 1164 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1165 | if (process_warning) |
c6510018 MS |
1166 | fprintf_unfiltered (tmp_error_stream, |
1167 | "The same program may be running in another process."); | |
1168 | #endif | |
81d0cc19 GS |
1169 | target_terminal_ours_for_output (); |
1170 | error_stream (tmp_error_stream); | |
1171 | } | |
53a5351d | 1172 | return return_val; |
c906108c SS |
1173 | } |
1174 | ||
c906108c | 1175 | int |
fba45db2 | 1176 | remove_breakpoints (void) |
c906108c | 1177 | { |
0bde7532 | 1178 | struct bp_location *b; |
c906108c SS |
1179 | int val; |
1180 | ||
0bde7532 | 1181 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1182 | { |
0bde7532 | 1183 | if (b->inserted) |
c5aa993b JM |
1184 | { |
1185 | val = remove_breakpoint (b, mark_uninserted); | |
1186 | if (val != 0) | |
1187 | return val; | |
1188 | } | |
1189 | } | |
c906108c SS |
1190 | return 0; |
1191 | } | |
1192 | ||
692590c1 | 1193 | int |
80ce1ecb | 1194 | remove_hw_watchpoints (void) |
692590c1 | 1195 | { |
0bde7532 | 1196 | struct bp_location *b; |
692590c1 MS |
1197 | int val; |
1198 | ||
0bde7532 | 1199 | ALL_BP_LOCATIONS (b) |
692590c1 | 1200 | { |
0bde7532 | 1201 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1202 | { |
1203 | val = remove_breakpoint (b, mark_uninserted); | |
1204 | if (val != 0) | |
1205 | return val; | |
1206 | } | |
1207 | } | |
1208 | return 0; | |
1209 | } | |
1210 | ||
c906108c | 1211 | int |
fba45db2 | 1212 | reattach_breakpoints (int pid) |
c906108c | 1213 | { |
0bde7532 | 1214 | struct bp_location *b; |
c906108c | 1215 | int val; |
ce696e05 | 1216 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1217 | |
ce696e05 KB |
1218 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1219 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1220 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1221 | { |
0bde7532 | 1222 | if (b->inserted) |
c5aa993b JM |
1223 | { |
1224 | remove_breakpoint (b, mark_inserted); | |
0bde7532 DJ |
1225 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1226 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
c5aa993b | 1227 | else |
0bde7532 DJ |
1228 | val = target_insert_breakpoint (b->address, b->shadow_contents); |
1229 | /* FIXME drow/2003-10-07: This doesn't handle any other kinds of | |
1230 | breakpoints. It's wrong for watchpoints, for example. */ | |
c5aa993b JM |
1231 | if (val != 0) |
1232 | { | |
ce696e05 | 1233 | do_cleanups (old_chain); |
c5aa993b JM |
1234 | return val; |
1235 | } | |
1236 | } | |
1237 | } | |
ce696e05 | 1238 | do_cleanups (old_chain); |
c906108c SS |
1239 | return 0; |
1240 | } | |
1241 | ||
1242 | void | |
fba45db2 | 1243 | update_breakpoints_after_exec (void) |
c906108c | 1244 | { |
c5aa993b JM |
1245 | struct breakpoint *b; |
1246 | struct breakpoint *temp; | |
c906108c SS |
1247 | |
1248 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1249 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1250 | shadow is NOT valid after an exec()! */ | |
1251 | mark_breakpoints_out (); | |
1252 | ||
1253 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1254 | { |
1255 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1256 | if (b->type == bp_shlib_event) | |
1257 | { | |
1258 | delete_breakpoint (b); | |
1259 | continue; | |
1260 | } | |
c906108c | 1261 | |
1900040c MS |
1262 | /* Thread event breakpoints must be set anew after an exec(), |
1263 | as must overlay event breakpoints. */ | |
1264 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1265 | { |
1266 | delete_breakpoint (b); | |
1267 | continue; | |
1268 | } | |
1269 | ||
c5aa993b JM |
1270 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1271 | if (b->type == bp_step_resume) | |
1272 | { | |
1273 | delete_breakpoint (b); | |
1274 | continue; | |
1275 | } | |
1276 | ||
1277 | /* Ditto the sigtramp handler breakpoints. */ | |
1278 | if (b->type == bp_through_sigtramp) | |
1279 | { | |
1280 | delete_breakpoint (b); | |
1281 | continue; | |
1282 | } | |
1283 | ||
1284 | /* Ditto the exception-handling catchpoints. */ | |
1285 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1286 | { | |
1287 | delete_breakpoint (b); | |
1288 | continue; | |
1289 | } | |
1290 | ||
1291 | /* Don't delete an exec catchpoint, because else the inferior | |
1292 | won't stop when it ought! | |
1293 | ||
1294 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1295 | on this target, we may not be able to stop when the vfork is |
1296 | seen, but only when the subsequent exec is seen. (And because | |
1297 | deleting fork catchpoints here but not vfork catchpoints will | |
1298 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1299 | |
1300 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1301 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1302 | automagically. Certainly on HP-UX that's true. |
1303 | ||
1304 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
41989fcd AC |
1305 | valid code address on some platforms (like the mn10300 |
1306 | simulators). We shouldn't assign any special interpretation to | |
1307 | a breakpoint with a zero address. And in fact, GDB doesn't --- | |
1308 | I can't see what that comment above is talking about. As far | |
1309 | as I can tell, setting the address of a | |
644a1fe1 JB |
1310 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero |
1311 | is meaningless, since those are implemented with HP-UX kernel | |
1312 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1313 | if ((b->type == bp_catch_exec) || |
1314 | (b->type == bp_catch_vfork) || | |
1315 | (b->type == bp_catch_fork)) | |
1316 | { | |
5cab636d | 1317 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b JM |
1318 | continue; |
1319 | } | |
1320 | ||
1321 | /* bp_finish is a special case. The only way we ought to be able | |
1322 | to see one of these when an exec() has happened, is if the user | |
1323 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1324 | carries them to the call-site of the current callee, by setting | |
1325 | a temporary bp there and resuming. But in this case, the finish | |
1326 | will carry them entirely through the vfork & exec. | |
1327 | ||
1328 | We don't want to allow a bp_finish to remain inserted now. But | |
1329 | we can't safely delete it, 'cause finish_command has a handle to | |
1330 | the bp on a bpstat, and will later want to delete it. There's a | |
1331 | chance (and I've seen it happen) that if we delete the bp_finish | |
1332 | here, that its storage will get reused by the time finish_command | |
1333 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1334 | We really must allow finish_command to delete a bp_finish. | |
1335 | ||
53a5351d JM |
1336 | In the absense of a general solution for the "how do we know |
1337 | it's safe to delete something others may have handles to?" | |
1338 | problem, what we'll do here is just uninsert the bp_finish, and | |
1339 | let finish_command delete it. | |
1340 | ||
1341 | (We know the bp_finish is "doomed" in the sense that it's | |
1342 | momentary, and will be deleted as soon as finish_command sees | |
1343 | the inferior stopped. So it doesn't matter that the bp's | |
1344 | address is probably bogus in the new a.out, unlike e.g., the | |
1345 | solib breakpoints.) */ | |
c5aa993b | 1346 | |
c5aa993b JM |
1347 | if (b->type == bp_finish) |
1348 | { | |
1349 | continue; | |
1350 | } | |
1351 | ||
1352 | /* Without a symbolic address, we have little hope of the | |
1353 | pre-exec() address meaning the same thing in the post-exec() | |
1354 | a.out. */ | |
1355 | if (b->addr_string == NULL) | |
1356 | { | |
1357 | delete_breakpoint (b); | |
1358 | continue; | |
1359 | } | |
1360 | ||
1361 | /* If this breakpoint has survived the above battery of checks, then | |
1362 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1363 | to a target address, rather than reusing the old evaluation. |
1364 | ||
1365 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1366 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1367 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1368 | the breakpoint's address from scratch, or deletes it if it can't. | |
1369 | So I think this assignment could be deleted without effect. */ | |
5cab636d | 1370 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b | 1371 | } |
1900040c MS |
1372 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1373 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1374 | } |
1375 | ||
1376 | int | |
fba45db2 | 1377 | detach_breakpoints (int pid) |
c906108c | 1378 | { |
0bde7532 | 1379 | struct bp_location *b; |
c906108c | 1380 | int val; |
ce696e05 | 1381 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1382 | |
39f77062 KB |
1383 | if (pid == PIDGET (inferior_ptid)) |
1384 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1385 | |
ce696e05 KB |
1386 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1387 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1388 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1389 | { |
0bde7532 | 1390 | if (b->inserted) |
c5aa993b JM |
1391 | { |
1392 | val = remove_breakpoint (b, mark_inserted); | |
1393 | if (val != 0) | |
1394 | { | |
ce696e05 | 1395 | do_cleanups (old_chain); |
c5aa993b JM |
1396 | return val; |
1397 | } | |
1398 | } | |
1399 | } | |
ce696e05 | 1400 | do_cleanups (old_chain); |
c906108c SS |
1401 | return 0; |
1402 | } | |
1403 | ||
1404 | static int | |
0bde7532 | 1405 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1406 | { |
1407 | int val; | |
c5aa993b | 1408 | |
0bde7532 | 1409 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1410 | /* Permanent breakpoints cannot be inserted or removed. */ |
1411 | return 0; | |
1412 | ||
0bde7532 | 1413 | if (b->owner->type == bp_none) |
53a5351d | 1414 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
0bde7532 DJ |
1415 | b->owner->number); |
1416 | ||
1417 | if (b->loc_type == bp_loc_software_breakpoint | |
1418 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1419 | { |
c02f5703 MS |
1420 | /* "Normal" instruction breakpoint: either the standard |
1421 | trap-instruction bp (bp_breakpoint), or a | |
1422 | bp_hardware_breakpoint. */ | |
1423 | ||
1424 | /* First check to see if we have to handle an overlay. */ | |
1425 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1426 | || b->section == NULL |
1427 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1428 | { |
1429 | /* No overlay handling: just remove the breakpoint. */ | |
1430 | ||
0bde7532 DJ |
1431 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1432 | val = target_remove_hw_breakpoint (b->address, | |
1433 | b->shadow_contents); | |
c02f5703 | 1434 | else |
0bde7532 | 1435 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c02f5703 | 1436 | } |
c906108c SS |
1437 | else |
1438 | { | |
c02f5703 MS |
1439 | /* This breakpoint is in an overlay section. |
1440 | Did we set a breakpoint at the LMA? */ | |
1441 | if (!overlay_events_enabled) | |
1442 | { | |
1443 | /* Yes -- overlay event support is not active, so we | |
1444 | should have set a breakpoint at the LMA. Remove it. | |
1445 | */ | |
0bde7532 DJ |
1446 | CORE_ADDR addr = overlay_unmapped_address (b->address, |
1447 | b->section); | |
c02f5703 MS |
1448 | /* Ignore any failures: if the LMA is in ROM, we will |
1449 | have already warned when we failed to insert it. */ | |
0bde7532 DJ |
1450 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1451 | target_remove_hw_breakpoint (addr, b->shadow_contents); | |
c02f5703 | 1452 | else |
0bde7532 | 1453 | target_remove_breakpoint (addr, b->shadow_contents); |
c02f5703 MS |
1454 | } |
1455 | /* Did we set a breakpoint at the VMA? | |
1456 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1457 | if (b->inserted) |
c906108c | 1458 | { |
c02f5703 MS |
1459 | /* Yes -- remove it. Previously we did not bother to |
1460 | remove the breakpoint if the section had been | |
1461 | unmapped, but let's not rely on that being safe. We | |
1462 | don't know what the overlay manager might do. */ | |
0bde7532 DJ |
1463 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1464 | val = target_remove_hw_breakpoint (b->address, | |
1465 | b->shadow_contents); | |
c02f5703 | 1466 | else |
0bde7532 DJ |
1467 | val = target_remove_breakpoint (b->address, |
1468 | b->shadow_contents); | |
c906108c | 1469 | } |
c02f5703 MS |
1470 | else |
1471 | { | |
1472 | /* No -- not inserted, so no need to remove. No error. */ | |
1473 | val = 0; | |
1474 | } | |
c906108c SS |
1475 | } |
1476 | if (val) | |
1477 | return val; | |
0bde7532 | 1478 | b->inserted = (is == mark_inserted); |
c906108c | 1479 | } |
0bde7532 | 1480 | else if (b->loc_type == bp_loc_hardware_watchpoint |
468d015d | 1481 | && breakpoint_enabled (b->owner) |
0bde7532 | 1482 | && !b->duplicate) |
c906108c | 1483 | { |
278cd55f AC |
1484 | struct value *v; |
1485 | struct value *n; | |
c5aa993b | 1486 | |
0bde7532 | 1487 | b->inserted = (is == mark_inserted); |
c906108c | 1488 | /* Walk down the saved value chain. */ |
0bde7532 | 1489 | for (v = b->owner->val_chain; v; v = v->next) |
c906108c SS |
1490 | { |
1491 | /* For each memory reference remove the watchpoint | |
1492 | at that address. */ | |
5c44784c JM |
1493 | if (VALUE_LVAL (v) == lval_memory |
1494 | && ! VALUE_LAZY (v)) | |
c906108c | 1495 | { |
2e70b7b9 MS |
1496 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1497 | ||
0bde7532 | 1498 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1499 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1500 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1501 | { | |
1502 | CORE_ADDR addr; | |
1503 | int len, type; | |
1504 | ||
1505 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1506 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1507 | type = hw_write; | |
0bde7532 | 1508 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1509 | type = hw_read; |
0bde7532 | 1510 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1511 | type = hw_access; |
1512 | ||
1513 | val = target_remove_watchpoint (addr, len, type); | |
1514 | if (val == -1) | |
0bde7532 | 1515 | b->inserted = 1; |
2e70b7b9 MS |
1516 | val = 0; |
1517 | } | |
c906108c SS |
1518 | } |
1519 | } | |
1520 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1521 | if ((is == mark_uninserted) && (b->inserted)) |
53a5351d | 1522 | warning ("Could not remove hardware watchpoint %d.", |
0bde7532 | 1523 | b->owner->number); |
c906108c | 1524 | } |
0bde7532 DJ |
1525 | else if ((b->owner->type == bp_catch_fork || |
1526 | b->owner->type == bp_catch_vfork || | |
1527 | b->owner->type == bp_catch_exec) | |
468d015d | 1528 | && breakpoint_enabled (b->owner) |
0bde7532 | 1529 | && !b->duplicate) |
c906108c SS |
1530 | { |
1531 | val = -1; | |
0bde7532 | 1532 | switch (b->owner->type) |
c5aa993b JM |
1533 | { |
1534 | case bp_catch_fork: | |
39f77062 | 1535 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1536 | break; |
1537 | case bp_catch_vfork: | |
39f77062 | 1538 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1539 | break; |
1540 | case bp_catch_exec: | |
39f77062 | 1541 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1542 | break; |
ac9a91a7 | 1543 | default: |
53a5351d | 1544 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1545 | break; |
c5aa993b | 1546 | } |
c906108c SS |
1547 | if (val) |
1548 | return val; | |
0bde7532 | 1549 | b->inserted = (is == mark_inserted); |
c906108c | 1550 | } |
0bde7532 DJ |
1551 | else if ((b->owner->type == bp_catch_catch || |
1552 | b->owner->type == bp_catch_throw) | |
468d015d | 1553 | && breakpoint_enabled (b->owner) |
0bde7532 | 1554 | && !b->duplicate) |
c906108c SS |
1555 | { |
1556 | ||
0bde7532 | 1557 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1558 | if (val) |
c5aa993b | 1559 | return val; |
0bde7532 | 1560 | b->inserted = (is == mark_inserted); |
c906108c | 1561 | } |
0bde7532 DJ |
1562 | else if (ep_is_exception_catchpoint (b->owner) |
1563 | && b->inserted /* sometimes previous insert doesn't happen */ | |
468d015d | 1564 | && breakpoint_enabled (b->owner) |
0bde7532 | 1565 | && !b->duplicate) |
c906108c SS |
1566 | { |
1567 | ||
0bde7532 | 1568 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1569 | if (val) |
c5aa993b JM |
1570 | return val; |
1571 | ||
0bde7532 | 1572 | b->inserted = (is == mark_inserted); |
c906108c SS |
1573 | } |
1574 | ||
1575 | return 0; | |
1576 | } | |
1577 | ||
1578 | /* Clear the "inserted" flag in all breakpoints. */ | |
1579 | ||
1580 | void | |
fba45db2 | 1581 | mark_breakpoints_out (void) |
c906108c | 1582 | { |
075f6582 | 1583 | struct bp_location *bpt; |
c906108c | 1584 | |
075f6582 DJ |
1585 | ALL_BP_LOCATIONS (bpt) |
1586 | bpt->inserted = 0; | |
c906108c SS |
1587 | } |
1588 | ||
53a5351d JM |
1589 | /* Clear the "inserted" flag in all breakpoints and delete any |
1590 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1591 | |
1592 | Plus other such housekeeping that has to be done for breakpoints | |
1593 | between runs. | |
1594 | ||
53a5351d JM |
1595 | Note: this function gets called at the end of a run (by |
1596 | generic_mourn_inferior) and when a run begins (by | |
1597 | init_wait_for_inferior). */ | |
c906108c SS |
1598 | |
1599 | ||
1600 | ||
1601 | void | |
fba45db2 | 1602 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1603 | { |
52f0bd74 | 1604 | struct breakpoint *b, *temp; |
075f6582 | 1605 | struct bp_location *bpt; |
c906108c SS |
1606 | static int warning_needed = 0; |
1607 | ||
075f6582 DJ |
1608 | ALL_BP_LOCATIONS (bpt) |
1609 | bpt->inserted = 0; | |
1610 | ||
c906108c | 1611 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1612 | { |
c5aa993b JM |
1613 | switch (b->type) |
1614 | { | |
1615 | case bp_call_dummy: | |
1616 | case bp_watchpoint_scope: | |
c906108c | 1617 | |
c5aa993b JM |
1618 | /* If the call dummy breakpoint is at the entry point it will |
1619 | cause problems when the inferior is rerun, so we better | |
1620 | get rid of it. | |
c906108c | 1621 | |
c5aa993b JM |
1622 | Also get rid of scope breakpoints. */ |
1623 | delete_breakpoint (b); | |
1624 | break; | |
c906108c | 1625 | |
c5aa993b JM |
1626 | case bp_watchpoint: |
1627 | case bp_hardware_watchpoint: | |
1628 | case bp_read_watchpoint: | |
1629 | case bp_access_watchpoint: | |
c906108c | 1630 | |
c5aa993b JM |
1631 | /* Likewise for watchpoints on local expressions. */ |
1632 | if (b->exp_valid_block != NULL) | |
1633 | delete_breakpoint (b); | |
c860120c PM |
1634 | if (context == inf_starting) |
1635 | { | |
1636 | /* Reset val field to force reread of starting value | |
1637 | in insert_breakpoints. */ | |
1638 | if (b->val) | |
1639 | value_free (b->val); | |
1640 | b->val = NULL; | |
1641 | } | |
c5aa993b JM |
1642 | break; |
1643 | default: | |
1644 | /* Likewise for exception catchpoints in dynamic-linked | |
1645 | executables where required */ | |
f83f82bc AC |
1646 | if (ep_is_exception_catchpoint (b) |
1647 | && deprecated_exception_catchpoints_are_fragile) | |
c5aa993b JM |
1648 | { |
1649 | warning_needed = 1; | |
c906108c | 1650 | delete_breakpoint (b); |
c5aa993b JM |
1651 | } |
1652 | break; | |
1653 | } | |
1654 | } | |
c906108c | 1655 | |
f83f82bc AC |
1656 | if (deprecated_exception_catchpoints_are_fragile) |
1657 | deprecated_exception_support_initialized = 0; | |
c906108c | 1658 | |
c5aa993b | 1659 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1660 | if (warning_needed && (context != inf_exited)) |
1661 | { | |
53a5351d JM |
1662 | warning ("Exception catchpoints from last run were deleted."); |
1663 | warning ("You must reinsert them explicitly."); | |
c906108c | 1664 | warning_needed = 0; |
c5aa993b | 1665 | } |
c906108c SS |
1666 | } |
1667 | ||
c2c6d25f JM |
1668 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1669 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1670 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1671 | permanent breakpoint. | |
1672 | - When continuing from a location with an ordinary breakpoint, we | |
1673 | actually single step once before calling insert_breakpoints. | |
1674 | - When continuing from a localion with a permanent breakpoint, we | |
1675 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1676 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1677 | |
c2c6d25f | 1678 | enum breakpoint_here |
fba45db2 | 1679 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1680 | { |
075f6582 | 1681 | struct bp_location *bpt; |
c2c6d25f | 1682 | int any_breakpoint_here = 0; |
c906108c | 1683 | |
075f6582 DJ |
1684 | ALL_BP_LOCATIONS (bpt) |
1685 | { | |
1686 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1687 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1688 | continue; | |
1689 | ||
468d015d | 1690 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1691 | || bpt->owner->enable_state == bp_permanent) |
1692 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1693 | { | |
1694 | if (overlay_debugging | |
1695 | && section_is_overlay (bpt->section) | |
1696 | && !section_is_mapped (bpt->section)) | |
1697 | continue; /* unmapped overlay -- can't be a match */ | |
1698 | else if (bpt->owner->enable_state == bp_permanent) | |
1699 | return permanent_breakpoint_here; | |
1700 | else | |
1701 | any_breakpoint_here = 1; | |
1702 | } | |
1703 | } | |
c906108c | 1704 | |
c2c6d25f | 1705 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1706 | } |
1707 | ||
c2c6d25f | 1708 | |
53a5351d JM |
1709 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1710 | but it only returns true if there is actually a breakpoint inserted | |
1711 | at PC. */ | |
c906108c SS |
1712 | |
1713 | int | |
fba45db2 | 1714 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1715 | { |
075f6582 | 1716 | struct bp_location *bpt; |
c906108c | 1717 | |
075f6582 | 1718 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1719 | { |
075f6582 DJ |
1720 | if (bpt->loc_type != bp_loc_software_breakpoint |
1721 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1722 | continue; | |
1723 | ||
1724 | if (bpt->inserted | |
1725 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1726 | { | |
1727 | if (overlay_debugging | |
1728 | && section_is_overlay (bpt->section) | |
1729 | && !section_is_mapped (bpt->section)) | |
1730 | continue; /* unmapped overlay -- can't be a match */ | |
1731 | else | |
1732 | return 1; | |
1733 | } | |
c5aa993b | 1734 | } |
c906108c SS |
1735 | |
1736 | return 0; | |
1737 | } | |
1738 | ||
4fa8626c DJ |
1739 | /* This function returns non-zero iff there is a software breakpoint |
1740 | inserted at PC. */ | |
1741 | ||
1742 | int | |
1743 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1744 | { | |
1745 | struct bp_location *bpt; | |
1746 | int any_breakpoint_here = 0; | |
1747 | ||
1748 | ALL_BP_LOCATIONS (bpt) | |
1749 | { | |
1750 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1751 | continue; | |
1752 | ||
1753 | if ((breakpoint_enabled (bpt->owner) | |
1754 | || bpt->owner->enable_state == bp_permanent) | |
1755 | && bpt->inserted | |
1756 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1757 | { | |
1758 | if (overlay_debugging | |
1759 | && section_is_overlay (bpt->section) | |
1760 | && !section_is_mapped (bpt->section)) | |
1761 | continue; /* unmapped overlay -- can't be a match */ | |
1762 | else | |
1763 | return 1; | |
1764 | } | |
1765 | } | |
1766 | ||
1767 | return 0; | |
1768 | } | |
1769 | ||
075f6582 DJ |
1770 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1771 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1772 | |
1773 | int | |
39f77062 | 1774 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1775 | { |
075f6582 | 1776 | struct bp_location *bpt; |
c906108c SS |
1777 | int thread; |
1778 | ||
39f77062 | 1779 | thread = pid_to_thread_id (ptid); |
c906108c | 1780 | |
075f6582 | 1781 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1782 | { |
075f6582 DJ |
1783 | if (bpt->loc_type != bp_loc_software_breakpoint |
1784 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1785 | continue; | |
1786 | ||
468d015d | 1787 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1788 | || bpt->owner->enable_state == bp_permanent) |
1789 | && bpt->address == pc | |
1790 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1791 | { | |
1792 | if (overlay_debugging | |
1793 | && section_is_overlay (bpt->section) | |
1794 | && !section_is_mapped (bpt->section)) | |
1795 | continue; /* unmapped overlay -- can't be a match */ | |
1796 | else | |
1797 | return 1; | |
1798 | } | |
c5aa993b | 1799 | } |
c906108c SS |
1800 | |
1801 | return 0; | |
1802 | } | |
c906108c | 1803 | \f |
c5aa993b | 1804 | |
c906108c SS |
1805 | /* bpstat stuff. External routines' interfaces are documented |
1806 | in breakpoint.h. */ | |
1807 | ||
1808 | int | |
fba45db2 | 1809 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1810 | { |
1811 | return | |
1812 | (ep->type == bp_catch_load) | |
1813 | || (ep->type == bp_catch_unload) | |
1814 | || (ep->type == bp_catch_fork) | |
1815 | || (ep->type == bp_catch_vfork) | |
1816 | || (ep->type == bp_catch_exec) | |
1817 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1818 | || (ep->type == bp_catch_throw); |
c906108c | 1819 | |
c5aa993b | 1820 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1821 | } |
c5aa993b | 1822 | |
c906108c | 1823 | int |
fba45db2 | 1824 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1825 | { |
1826 | return | |
1827 | (ep->type == bp_catch_load) | |
d85310f7 | 1828 | || (ep->type == bp_catch_unload); |
c906108c SS |
1829 | } |
1830 | ||
1831 | int | |
fba45db2 | 1832 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1833 | { |
1834 | return | |
1835 | (ep->type == bp_catch_catch) | |
d85310f7 | 1836 | || (ep->type == bp_catch_throw); |
c906108c SS |
1837 | } |
1838 | ||
1839 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1840 | Also free any storage that is part of a bpstat. */ | |
1841 | ||
1842 | void | |
fba45db2 | 1843 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1844 | { |
1845 | bpstat p; | |
1846 | bpstat q; | |
1847 | ||
1848 | if (bsp == 0) | |
1849 | return; | |
1850 | p = *bsp; | |
1851 | while (p != NULL) | |
1852 | { | |
1853 | q = p->next; | |
1854 | if (p->old_val != NULL) | |
1855 | value_free (p->old_val); | |
c2b8ed2c | 1856 | free_command_lines (&p->commands); |
b8c9b27d | 1857 | xfree (p); |
c906108c SS |
1858 | p = q; |
1859 | } | |
1860 | *bsp = NULL; | |
1861 | } | |
1862 | ||
1863 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1864 | is part of the bpstat is copied as well. */ | |
1865 | ||
1866 | bpstat | |
fba45db2 | 1867 | bpstat_copy (bpstat bs) |
c906108c SS |
1868 | { |
1869 | bpstat p = NULL; | |
1870 | bpstat tmp; | |
1871 | bpstat retval = NULL; | |
1872 | ||
1873 | if (bs == NULL) | |
1874 | return bs; | |
1875 | ||
1876 | for (; bs != NULL; bs = bs->next) | |
1877 | { | |
1878 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1879 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1880 | if (bs->commands != NULL) |
1881 | tmp->commands = copy_command_lines (bs->commands); | |
1882 | if (bs->old_val != NULL) | |
1883 | tmp->old_val = value_copy (bs->old_val); | |
1884 | ||
c906108c SS |
1885 | if (p == NULL) |
1886 | /* This is the first thing in the chain. */ | |
1887 | retval = tmp; | |
1888 | else | |
1889 | p->next = tmp; | |
1890 | p = tmp; | |
1891 | } | |
1892 | p->next = NULL; | |
1893 | return retval; | |
1894 | } | |
1895 | ||
1896 | /* Find the bpstat associated with this breakpoint */ | |
1897 | ||
1898 | bpstat | |
fba45db2 | 1899 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1900 | { |
c5aa993b JM |
1901 | if (bsp == NULL) |
1902 | return NULL; | |
c906108c | 1903 | |
c5aa993b JM |
1904 | for (; bsp != NULL; bsp = bsp->next) |
1905 | { | |
1906 | if (bsp->breakpoint_at == breakpoint) | |
1907 | return bsp; | |
1908 | } | |
c906108c SS |
1909 | return NULL; |
1910 | } | |
1911 | ||
1912 | /* Find a step_resume breakpoint associated with this bpstat. | |
1913 | (If there are multiple step_resume bp's on the list, this function | |
1914 | will arbitrarily pick one.) | |
1915 | ||
1916 | It is an error to use this function if BPSTAT doesn't contain a | |
1917 | step_resume breakpoint. | |
1918 | ||
1919 | See wait_for_inferior's use of this function. */ | |
1920 | struct breakpoint * | |
fba45db2 | 1921 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1922 | { |
8601f500 MS |
1923 | int current_thread; |
1924 | ||
c906108c SS |
1925 | if (bsp == NULL) |
1926 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1927 | ||
8601f500 MS |
1928 | current_thread = pid_to_thread_id (inferior_ptid); |
1929 | ||
c906108c SS |
1930 | for (; bsp != NULL; bsp = bsp->next) |
1931 | { | |
1932 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1933 | (bsp->breakpoint_at->type == bp_step_resume) && |
1934 | (bsp->breakpoint_at->thread == current_thread || | |
1935 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1936 | return bsp->breakpoint_at; |
c906108c SS |
1937 | } |
1938 | ||
1939 | error ("Internal error (no step_resume breakpoint found)"); | |
1940 | } | |
1941 | ||
1942 | ||
1943 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1944 | at. *BSP upon return is a bpstat which points to the remaining | |
1945 | breakpoints stopped at (but which is not guaranteed to be good for | |
1946 | anything but further calls to bpstat_num). | |
1947 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1948 | ||
1949 | int | |
fba45db2 | 1950 | bpstat_num (bpstat *bsp) |
c906108c SS |
1951 | { |
1952 | struct breakpoint *b; | |
1953 | ||
1954 | if ((*bsp) == NULL) | |
1955 | return 0; /* No more breakpoint values */ | |
1956 | else | |
1957 | { | |
1958 | b = (*bsp)->breakpoint_at; | |
1959 | *bsp = (*bsp)->next; | |
1960 | if (b == NULL) | |
1961 | return -1; /* breakpoint that's been deleted since */ | |
1962 | else | |
c5aa993b | 1963 | return b->number; /* We have its number */ |
c906108c SS |
1964 | } |
1965 | } | |
1966 | ||
1967 | /* Modify BS so that the actions will not be performed. */ | |
1968 | ||
1969 | void | |
fba45db2 | 1970 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1971 | { |
1972 | for (; bs != NULL; bs = bs->next) | |
1973 | { | |
c2b8ed2c | 1974 | free_command_lines (&bs->commands); |
c906108c SS |
1975 | if (bs->old_val != NULL) |
1976 | { | |
1977 | value_free (bs->old_val); | |
1978 | bs->old_val = NULL; | |
1979 | } | |
1980 | } | |
1981 | } | |
1982 | ||
1983 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 1984 | static void |
4efb68b1 | 1985 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
1986 | { |
1987 | executing_breakpoint_commands = 0; | |
1988 | } | |
1989 | ||
1990 | /* Execute all the commands associated with all the breakpoints at this | |
1991 | location. Any of these commands could cause the process to proceed | |
1992 | beyond this point, etc. We look out for such changes by checking | |
1993 | the global "breakpoint_proceeded" after each command. */ | |
1994 | ||
1995 | void | |
fba45db2 | 1996 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1997 | { |
1998 | bpstat bs; | |
1999 | struct cleanup *old_chain; | |
c906108c SS |
2000 | |
2001 | /* Avoid endless recursion if a `source' command is contained | |
2002 | in bs->commands. */ | |
2003 | if (executing_breakpoint_commands) | |
2004 | return; | |
2005 | ||
2006 | executing_breakpoint_commands = 1; | |
2007 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2008 | ||
2009 | top: | |
2010 | /* Note that (as of this writing), our callers all appear to | |
2011 | be passing us the address of global stop_bpstat. And, if | |
2012 | our calls to execute_control_command cause the inferior to | |
2013 | proceed, that global (and hence, *bsp) will change. | |
2014 | ||
2015 | We must be careful to not touch *bsp unless the inferior | |
2016 | has not proceeded. */ | |
2017 | ||
2018 | /* This pointer will iterate over the list of bpstat's. */ | |
2019 | bs = *bsp; | |
2020 | ||
2021 | breakpoint_proceeded = 0; | |
2022 | for (; bs != NULL; bs = bs->next) | |
2023 | { | |
6c50ab1c JB |
2024 | struct command_line *cmd; |
2025 | struct cleanup *this_cmd_tree_chain; | |
2026 | ||
2027 | /* Take ownership of the BSP's command tree, if it has one. | |
2028 | ||
2029 | The command tree could legitimately contain commands like | |
2030 | 'step' and 'next', which call clear_proceed_status, which | |
2031 | frees stop_bpstat's command tree. To make sure this doesn't | |
2032 | free the tree we're executing out from under us, we need to | |
2033 | take ownership of the tree ourselves. Since a given bpstat's | |
2034 | commands are only executed once, we don't need to copy it; we | |
2035 | can clear the pointer in the bpstat, and make sure we free | |
2036 | the tree when we're done. */ | |
c906108c | 2037 | cmd = bs->commands; |
6c50ab1c JB |
2038 | bs->commands = 0; |
2039 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2040 | ||
c906108c SS |
2041 | while (cmd != NULL) |
2042 | { | |
2043 | execute_control_command (cmd); | |
2044 | ||
2045 | if (breakpoint_proceeded) | |
2046 | break; | |
2047 | else | |
2048 | cmd = cmd->next; | |
2049 | } | |
6c50ab1c JB |
2050 | |
2051 | /* We can free this command tree now. */ | |
2052 | do_cleanups (this_cmd_tree_chain); | |
2053 | ||
c906108c SS |
2054 | if (breakpoint_proceeded) |
2055 | /* The inferior is proceeded by the command; bomb out now. | |
2056 | The bpstat chain has been blown away by wait_for_inferior. | |
2057 | But since execution has stopped again, there is a new bpstat | |
2058 | to look at, so start over. */ | |
2059 | goto top; | |
c906108c | 2060 | } |
c2b8ed2c | 2061 | do_cleanups (old_chain); |
c906108c SS |
2062 | } |
2063 | ||
e514a9d6 | 2064 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2065 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2066 | by having it set different print_it values. |
2067 | ||
2068 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2069 | through the bpstat list of things causing this stop, calling the | |
2070 | print_bp_stop_message function on each one. The behavior of the | |
2071 | print_bp_stop_message function depends on the print_it field of | |
2072 | bpstat. If such field so indicates, call this function here. | |
2073 | ||
2074 | Return values from this routine (ultimately used by bpstat_print() | |
2075 | and normal_stop() to decide what to do): | |
2076 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2077 | don't print anything else. | |
2078 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2079 | that something to be followed by a location. | |
2080 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2081 | that something to be followed by a location. | |
2082 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2083 | analysis. */ | |
c906108c | 2084 | |
917317f4 | 2085 | static enum print_stop_action |
fba45db2 | 2086 | print_it_typical (bpstat bs) |
c906108c | 2087 | { |
3b31d625 | 2088 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2089 | struct ui_stream *stb; |
2090 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2091 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2092 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2093 | which has since been deleted. */ | |
e514a9d6 | 2094 | if (bs->breakpoint_at == NULL) |
917317f4 | 2095 | return PRINT_UNKNOWN; |
c906108c | 2096 | |
e514a9d6 | 2097 | switch (bs->breakpoint_at->type) |
c906108c | 2098 | { |
e514a9d6 JM |
2099 | case bp_breakpoint: |
2100 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2101 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2102 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2103 | bs->breakpoint_at->loc->address, | |
76897487 | 2104 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2105 | annotate_breakpoint (bs->breakpoint_at->number); |
2106 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2107 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2108 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2109 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2110 | ui_out_text (uiout, ", "); | |
2111 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2112 | break; |
2113 | ||
2114 | case bp_shlib_event: | |
917317f4 JM |
2115 | /* Did we stop because the user set the stop_on_solib_events |
2116 | variable? (If so, we report this as a generic, "Stopped due | |
2117 | to shlib event" message.) */ | |
e514a9d6 JM |
2118 | printf_filtered ("Stopped due to shared library event\n"); |
2119 | return PRINT_NOTHING; | |
2120 | break; | |
2121 | ||
c4093a6a JM |
2122 | case bp_thread_event: |
2123 | /* Not sure how we will get here. | |
2124 | GDB should not stop for these breakpoints. */ | |
2125 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2126 | return PRINT_NOTHING; | |
2127 | break; | |
2128 | ||
1900040c MS |
2129 | case bp_overlay_event: |
2130 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2131 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2132 | return PRINT_NOTHING; | |
2133 | break; | |
2134 | ||
e514a9d6 | 2135 | case bp_catch_load: |
c906108c SS |
2136 | annotate_catchpoint (bs->breakpoint_at->number); |
2137 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2138 | printf_filtered ("loaded"); |
2139 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2140 | return PRINT_SRC_AND_LOC; | |
2141 | break; | |
2142 | ||
2143 | case bp_catch_unload: | |
2144 | annotate_catchpoint (bs->breakpoint_at->number); | |
2145 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2146 | printf_filtered ("unloaded"); | |
2147 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2148 | return PRINT_SRC_AND_LOC; | |
2149 | break; | |
2150 | ||
2151 | case bp_catch_fork: | |
2152 | annotate_catchpoint (bs->breakpoint_at->number); | |
2153 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2154 | printf_filtered ("forked"); | |
53a5351d JM |
2155 | printf_filtered (" process %d), ", |
2156 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2157 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2158 | break; |
2159 | ||
2160 | case bp_catch_vfork: | |
2161 | annotate_catchpoint (bs->breakpoint_at->number); | |
2162 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2163 | printf_filtered ("vforked"); | |
2164 | printf_filtered (" process %d), ", | |
2165 | bs->breakpoint_at->forked_inferior_pid); | |
2166 | return PRINT_SRC_AND_LOC; | |
2167 | break; | |
2168 | ||
2169 | case bp_catch_exec: | |
c906108c SS |
2170 | annotate_catchpoint (bs->breakpoint_at->number); |
2171 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2172 | bs->breakpoint_at->number, |
2173 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2174 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2175 | break; |
2176 | ||
2177 | case bp_catch_catch: | |
53a5351d JM |
2178 | if (current_exception_event && |
2179 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2180 | { |
2181 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2182 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2183 | bs->breakpoint_at->number); | |
c5aa993b JM |
2184 | printf_filtered ("throw location "); |
2185 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2186 | printf_filtered ("%s:%d", | |
2187 | CURRENT_EXCEPTION_THROW_FILE, | |
2188 | CURRENT_EXCEPTION_THROW_LINE); | |
2189 | else | |
2190 | printf_filtered ("unknown"); | |
2191 | ||
2192 | printf_filtered (", catch location "); | |
2193 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2194 | printf_filtered ("%s:%d", | |
2195 | CURRENT_EXCEPTION_CATCH_FILE, | |
2196 | CURRENT_EXCEPTION_CATCH_LINE); | |
2197 | else | |
2198 | printf_filtered ("unknown"); | |
2199 | ||
2200 | printf_filtered ("\n"); | |
e514a9d6 JM |
2201 | /* don't bother to print location frame info */ |
2202 | return PRINT_SRC_ONLY; | |
c5aa993b | 2203 | } |
c906108c | 2204 | else |
c5aa993b | 2205 | { |
e514a9d6 JM |
2206 | /* really throw, some other bpstat will handle it */ |
2207 | return PRINT_UNKNOWN; | |
c5aa993b | 2208 | } |
e514a9d6 JM |
2209 | break; |
2210 | ||
2211 | case bp_catch_throw: | |
53a5351d JM |
2212 | if (current_exception_event && |
2213 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2214 | { |
2215 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2216 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2217 | bs->breakpoint_at->number); | |
c5aa993b JM |
2218 | printf_filtered ("throw location "); |
2219 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2220 | printf_filtered ("%s:%d", | |
2221 | CURRENT_EXCEPTION_THROW_FILE, | |
2222 | CURRENT_EXCEPTION_THROW_LINE); | |
2223 | else | |
2224 | printf_filtered ("unknown"); | |
2225 | ||
2226 | printf_filtered (", catch location "); | |
2227 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2228 | printf_filtered ("%s:%d", | |
2229 | CURRENT_EXCEPTION_CATCH_FILE, | |
2230 | CURRENT_EXCEPTION_CATCH_LINE); | |
2231 | else | |
2232 | printf_filtered ("unknown"); | |
2233 | ||
2234 | printf_filtered ("\n"); | |
e514a9d6 JM |
2235 | /* don't bother to print location frame info */ |
2236 | return PRINT_SRC_ONLY; | |
c5aa993b | 2237 | } |
c906108c | 2238 | else |
c5aa993b | 2239 | { |
e514a9d6 JM |
2240 | /* really catch, some other bpstat will handle it */ |
2241 | return PRINT_UNKNOWN; | |
c5aa993b | 2242 | } |
e514a9d6 | 2243 | break; |
c906108c | 2244 | |
e514a9d6 JM |
2245 | case bp_watchpoint: |
2246 | case bp_hardware_watchpoint: | |
2247 | if (bs->old_val != NULL) | |
2248 | { | |
2249 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2250 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2251 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2252 | mention (bs->breakpoint_at); |
3b31d625 | 2253 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2254 | ui_out_text (uiout, "\nOld value = "); |
2255 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2256 | ui_out_field_stream (uiout, "old", stb); | |
2257 | ui_out_text (uiout, "\nNew value = "); | |
2258 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2259 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2260 | do_cleanups (ui_out_chain); |
8b93c638 | 2261 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2262 | value_free (bs->old_val); |
2263 | bs->old_val = NULL; | |
2264 | } | |
2265 | /* More than one watchpoint may have been triggered. */ | |
2266 | return PRINT_UNKNOWN; | |
2267 | break; | |
2268 | ||
2269 | case bp_read_watchpoint: | |
9dc5e2a9 | 2270 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2271 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); |
8b93c638 | 2272 | mention (bs->breakpoint_at); |
3b31d625 | 2273 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2274 | ui_out_text (uiout, "\nValue = "); |
2275 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2276 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2277 | do_cleanups (ui_out_chain); |
8b93c638 | 2278 | ui_out_text (uiout, "\n"); |
917317f4 | 2279 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2280 | break; |
2281 | ||
2282 | case bp_access_watchpoint: | |
8b93c638 JM |
2283 | if (bs->old_val != NULL) |
2284 | { | |
2285 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2286 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2287 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2288 | mention (bs->breakpoint_at); |
3b31d625 | 2289 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2290 | ui_out_text (uiout, "\nOld value = "); |
2291 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2292 | ui_out_field_stream (uiout, "old", stb); | |
2293 | value_free (bs->old_val); | |
2294 | bs->old_val = NULL; | |
2295 | ui_out_text (uiout, "\nNew value = "); | |
2296 | } | |
2297 | else | |
2298 | { | |
2299 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2300 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2301 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
3b31d625 | 2302 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2303 | ui_out_text (uiout, "\nValue = "); |
2304 | } | |
2305 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2306 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2307 | do_cleanups (ui_out_chain); |
8b93c638 | 2308 | ui_out_text (uiout, "\n"); |
917317f4 | 2309 | return PRINT_UNKNOWN; |
e514a9d6 | 2310 | break; |
4ce44c66 | 2311 | |
e514a9d6 JM |
2312 | /* Fall through, we don't deal with these types of breakpoints |
2313 | here. */ | |
2314 | ||
11cf8741 | 2315 | case bp_finish: |
9dc5e2a9 | 2316 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2317 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2318 | return PRINT_UNKNOWN; |
2319 | break; | |
2320 | ||
e514a9d6 | 2321 | case bp_until: |
9dc5e2a9 | 2322 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2323 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2324 | return PRINT_UNKNOWN; |
2325 | break; | |
2326 | ||
c2d11a7d | 2327 | case bp_none: |
e514a9d6 JM |
2328 | case bp_longjmp: |
2329 | case bp_longjmp_resume: | |
2330 | case bp_step_resume: | |
2331 | case bp_through_sigtramp: | |
2332 | case bp_watchpoint_scope: | |
2333 | case bp_call_dummy: | |
2334 | default: | |
2335 | return PRINT_UNKNOWN; | |
2336 | } | |
2337 | } | |
2338 | ||
2339 | /* Generic routine for printing messages indicating why we | |
2340 | stopped. The behavior of this function depends on the value | |
2341 | 'print_it' in the bpstat structure. Under some circumstances we | |
2342 | may decide not to print anything here and delegate the task to | |
2343 | normal_stop(). */ | |
2344 | ||
2345 | static enum print_stop_action | |
2346 | print_bp_stop_message (bpstat bs) | |
2347 | { | |
2348 | switch (bs->print_it) | |
2349 | { | |
2350 | case print_it_noop: | |
2351 | /* Nothing should be printed for this bpstat entry. */ | |
2352 | return PRINT_UNKNOWN; | |
2353 | break; | |
2354 | ||
2355 | case print_it_done: | |
2356 | /* We still want to print the frame, but we already printed the | |
2357 | relevant messages. */ | |
2358 | return PRINT_SRC_AND_LOC; | |
2359 | break; | |
2360 | ||
2361 | case print_it_normal: | |
3086aeae DJ |
2362 | /* Normal case. Call the breakpoint's print_it method, or |
2363 | print_it_typical. */ | |
2364 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2365 | && bs->breakpoint_at->ops->print_it != NULL) | |
2366 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2367 | else | |
2368 | return print_it_typical (bs); | |
e514a9d6 | 2369 | break; |
3086aeae | 2370 | |
e514a9d6 | 2371 | default: |
8e65ff28 AC |
2372 | internal_error (__FILE__, __LINE__, |
2373 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2374 | break; |
c906108c | 2375 | } |
c906108c SS |
2376 | } |
2377 | ||
e514a9d6 JM |
2378 | /* Print a message indicating what happened. This is called from |
2379 | normal_stop(). The input to this routine is the head of the bpstat | |
2380 | list - a list of the eventpoints that caused this stop. This | |
2381 | routine calls the generic print routine for printing a message | |
2382 | about reasons for stopping. This will print (for example) the | |
2383 | "Breakpoint n," part of the output. The return value of this | |
2384 | routine is one of: | |
c906108c | 2385 | |
917317f4 JM |
2386 | PRINT_UNKNOWN: Means we printed nothing |
2387 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2388 | code to print the location. An example is |
2389 | "Breakpoint 1, " which should be followed by | |
2390 | the location. | |
917317f4 | 2391 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2392 | to also print the location part of the message. |
2393 | An example is the catch/throw messages, which | |
917317f4 JM |
2394 | don't require a location appended to the end. |
2395 | PRINT_NOTHING: We have done some printing and we don't need any | |
2396 | further info to be printed.*/ | |
c906108c | 2397 | |
917317f4 | 2398 | enum print_stop_action |
fba45db2 | 2399 | bpstat_print (bpstat bs) |
c906108c SS |
2400 | { |
2401 | int val; | |
c5aa993b | 2402 | |
c906108c | 2403 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2404 | (Currently all watchpoints go on the bpstat whether hit or not. |
2405 | That probably could (should) be changed, provided care is taken | |
c906108c | 2406 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2407 | for (; bs; bs = bs->next) |
2408 | { | |
2409 | val = print_bp_stop_message (bs); | |
2410 | if (val == PRINT_SRC_ONLY | |
2411 | || val == PRINT_SRC_AND_LOC | |
2412 | || val == PRINT_NOTHING) | |
2413 | return val; | |
2414 | } | |
c906108c | 2415 | |
e514a9d6 JM |
2416 | /* We reached the end of the chain, or we got a null BS to start |
2417 | with and nothing was printed. */ | |
917317f4 | 2418 | return PRINT_UNKNOWN; |
c906108c SS |
2419 | } |
2420 | ||
2421 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2422 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2423 | The argument is a "struct expression *" that has been cast to char * to | |
2424 | make it pass through catch_errors. */ | |
2425 | ||
2426 | static int | |
4efb68b1 | 2427 | breakpoint_cond_eval (void *exp) |
c906108c | 2428 | { |
278cd55f | 2429 | struct value *mark = value_mark (); |
c5aa993b | 2430 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2431 | value_free_to_mark (mark); |
2432 | return i; | |
2433 | } | |
2434 | ||
2435 | /* Allocate a new bpstat and chain it to the current one. */ | |
2436 | ||
2437 | static bpstat | |
831662b3 | 2438 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2439 | { |
2440 | bpstat bs; | |
2441 | ||
2442 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2443 | cbs->next = bs; | |
2444 | bs->breakpoint_at = b; | |
2445 | /* If the condition is false, etc., don't do the commands. */ | |
2446 | bs->commands = NULL; | |
2447 | bs->old_val = NULL; | |
2448 | bs->print_it = print_it_normal; | |
2449 | return bs; | |
2450 | } | |
2451 | \f | |
2452 | /* Possible return values for watchpoint_check (this can't be an enum | |
2453 | because of check_errors). */ | |
2454 | /* The watchpoint has been deleted. */ | |
2455 | #define WP_DELETED 1 | |
2456 | /* The value has changed. */ | |
2457 | #define WP_VALUE_CHANGED 2 | |
2458 | /* The value has not changed. */ | |
2459 | #define WP_VALUE_NOT_CHANGED 3 | |
2460 | ||
2461 | #define BP_TEMPFLAG 1 | |
2462 | #define BP_HARDWAREFLAG 2 | |
2463 | ||
2464 | /* Check watchpoint condition. */ | |
2465 | ||
2466 | static int | |
4efb68b1 | 2467 | watchpoint_check (void *p) |
c906108c SS |
2468 | { |
2469 | bpstat bs = (bpstat) p; | |
2470 | struct breakpoint *b; | |
2471 | struct frame_info *fr; | |
2472 | int within_current_scope; | |
2473 | ||
2474 | b = bs->breakpoint_at; | |
2475 | ||
2476 | if (b->exp_valid_block == NULL) | |
2477 | within_current_scope = 1; | |
2478 | else | |
2479 | { | |
2480 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2481 | any chance of handling watchpoints on local variables, we'll need |
2482 | the frame chain (so we can determine if we're in scope). */ | |
2483 | reinit_frame_cache (); | |
101dcfbe | 2484 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2485 | within_current_scope = (fr != NULL); |
c12260ac CV |
2486 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2487 | in the function but the stack frame has already been invalidated. | |
2488 | Since we can't rely on the values of local variables after the | |
2489 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2490 | state as `not changed' without further checking. |
2491 | ||
2492 | vinschen/2003-09-04: The former implementation left out the case | |
2493 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2494 | because the current PC is currently in an epilogue. Calling | |
2495 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2496 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2497 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2498 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2499 | if (fr && within_current_scope) |
c906108c SS |
2500 | /* If we end up stopping, the current frame will get selected |
2501 | in normal_stop. So this call to select_frame won't affect | |
2502 | the user. */ | |
0f7d239c | 2503 | select_frame (fr); |
c906108c | 2504 | } |
c5aa993b | 2505 | |
c906108c SS |
2506 | if (within_current_scope) |
2507 | { | |
2508 | /* We use value_{,free_to_}mark because it could be a | |
2509 | *long* time before we return to the command level and | |
c5aa993b JM |
2510 | call free_all_values. We can't call free_all_values because |
2511 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2512 | |
278cd55f AC |
2513 | struct value *mark = value_mark (); |
2514 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2515 | if (!value_equal (b->val, new_val)) |
2516 | { | |
2517 | release_value (new_val); | |
2518 | value_free_to_mark (mark); | |
2519 | bs->old_val = b->val; | |
2520 | b->val = new_val; | |
2521 | /* We will stop here */ | |
2522 | return WP_VALUE_CHANGED; | |
2523 | } | |
2524 | else | |
2525 | { | |
2526 | /* Nothing changed, don't do anything. */ | |
2527 | value_free_to_mark (mark); | |
2528 | /* We won't stop here */ | |
2529 | return WP_VALUE_NOT_CHANGED; | |
2530 | } | |
2531 | } | |
2532 | else | |
2533 | { | |
2534 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2535 | if we temporarily ignored the watchpoint, then when |
2536 | we reenter the block in which it is valid it contains | |
2537 | garbage (in the case of a function, it may have two | |
2538 | garbage values, one before and one after the prologue). | |
2539 | So we can't even detect the first assignment to it and | |
2540 | watch after that (since the garbage may or may not equal | |
2541 | the first value assigned). */ | |
4ce44c66 JM |
2542 | /* We print all the stop information in print_it_typical(), but |
2543 | in this case, by the time we call print_it_typical() this bp | |
2544 | will be deleted already. So we have no choice but print the | |
2545 | information here. */ | |
9dc5e2a9 | 2546 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2547 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2548 | ui_out_text (uiout, "\nWatchpoint "); |
2549 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2550 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2551 | which its expression is valid.\n"); | |
4ce44c66 | 2552 | |
c906108c | 2553 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2554 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2555 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2556 | |
2557 | return WP_DELETED; | |
2558 | } | |
2559 | } | |
2560 | ||
9709f61c | 2561 | /* Get a bpstat associated with having just stopped at address |
00d4360e UW |
2562 | BP_ADDR in thread PTID. STOPPED_BY_WATCHPOINT is true if the |
2563 | target thinks we stopped due to a hardware watchpoint. */ | |
c906108c SS |
2564 | |
2565 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2566 | don't understand this stop. Result is a chain of bpstat's such that: | |
2567 | ||
c5aa993b | 2568 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2569 | |
c5aa993b | 2570 | if we understand why we stopped, the result is not null. |
c906108c | 2571 | |
c5aa993b JM |
2572 | Each element of the chain refers to a particular breakpoint or |
2573 | watchpoint at which we have stopped. (We may have stopped for | |
2574 | several reasons concurrently.) | |
c906108c | 2575 | |
c5aa993b JM |
2576 | Each element of the chain has valid next, breakpoint_at, |
2577 | commands, FIXME??? fields. */ | |
c906108c SS |
2578 | |
2579 | bpstat | |
00d4360e | 2580 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid, int stopped_by_watchpoint) |
c906108c | 2581 | { |
52f0bd74 | 2582 | struct breakpoint *b, *temp; |
c906108c SS |
2583 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
2584 | int real_breakpoint = 0; | |
2585 | /* Root of the chain of bpstat's */ | |
2586 | struct bpstats root_bs[1]; | |
2587 | /* Pointer to the last thing in the chain currently. */ | |
2588 | bpstat bs = root_bs; | |
fa5281d0 | 2589 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2590 | |
c906108c | 2591 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2592 | { |
468d015d | 2593 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2594 | continue; |
2595 | ||
7270d8f2 OF |
2596 | /* Hardware watchpoints are treated as non-existent if the reason we |
2597 | stopped wasn't a hardware watchpoint (we didn't stop on some data | |
2598 | address). Otherwise gdb won't stop on a break instruction in the code | |
2599 | (not from a breakpoint) when a hardware watchpoint has been defined. */ | |
c5aa993b | 2600 | if (b->type != bp_watchpoint |
7270d8f2 OF |
2601 | && !((b->type == bp_hardware_watchpoint |
2602 | || b->type == bp_read_watchpoint | |
2603 | || b->type == bp_access_watchpoint) | |
00d4360e | 2604 | && stopped_by_watchpoint) |
c5aa993b JM |
2605 | && b->type != bp_hardware_breakpoint |
2606 | && b->type != bp_catch_fork | |
2607 | && b->type != bp_catch_vfork | |
2608 | && b->type != bp_catch_exec | |
2609 | && b->type != bp_catch_catch | |
2610 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2611 | { |
5cab636d | 2612 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2613 | continue; |
2614 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2615 | && section_is_overlay (b->loc->section) |
2616 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2617 | continue; |
2618 | } | |
c906108c | 2619 | |
c02f5703 MS |
2620 | if (b->type == bp_hardware_breakpoint) |
2621 | { | |
9709f61c | 2622 | if (b->loc->address != bp_addr) |
c02f5703 MS |
2623 | continue; |
2624 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2625 | && section_is_overlay (b->loc->section) |
2626 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2627 | continue; |
2628 | } | |
c5aa993b | 2629 | |
c5aa993b JM |
2630 | /* Is this a catchpoint of a load or unload? If so, did we |
2631 | get a load or unload of the specified library? If not, | |
2632 | ignore it. */ | |
2633 | if ((b->type == bp_catch_load) | |
c906108c | 2634 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2635 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2636 | || ((b->dll_pathname != NULL) |
53a5351d | 2637 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2638 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2639 | PIDGET (inferior_ptid))) | |
53a5351d | 2640 | != 0))) |
c906108c | 2641 | #endif |
c5aa993b JM |
2642 | ) |
2643 | continue; | |
2644 | ||
2645 | if ((b->type == bp_catch_unload) | |
c906108c | 2646 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2647 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2648 | || ((b->dll_pathname != NULL) |
53a5351d | 2649 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2650 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2651 | PIDGET (inferior_ptid))) | |
53a5351d | 2652 | != 0))) |
c906108c | 2653 | #endif |
c5aa993b JM |
2654 | ) |
2655 | continue; | |
c906108c | 2656 | |
c5aa993b | 2657 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2658 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2659 | &b->forked_inferior_pid)) | |
c5aa993b | 2660 | continue; |
c906108c | 2661 | |
c5aa993b | 2662 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2663 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2664 | &b->forked_inferior_pid)) | |
c5aa993b | 2665 | continue; |
c906108c | 2666 | |
c5aa993b | 2667 | if ((b->type == bp_catch_exec) |
47932f85 | 2668 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2669 | continue; |
c906108c | 2670 | |
c5aa993b JM |
2671 | if (ep_is_exception_catchpoint (b) && |
2672 | !(current_exception_event = target_get_current_exception_event ())) | |
2673 | continue; | |
c906108c | 2674 | |
c5aa993b JM |
2675 | /* Come here if it's a watchpoint, or if the break address matches */ |
2676 | ||
2677 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2678 | ||
2679 | /* Watchpoints may change this, if not found to have triggered. */ | |
2680 | bs->stop = 1; | |
2681 | bs->print = 1; | |
2682 | ||
53a5351d JM |
2683 | if (b->type == bp_watchpoint || |
2684 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2685 | { |
9ebf4acf AC |
2686 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2687 | b->number); | |
2688 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2689 | int e = catch_errors (watchpoint_check, bs, message, | |
2690 | RETURN_MASK_ALL); | |
2691 | do_cleanups (cleanups); | |
2692 | switch (e) | |
c5aa993b JM |
2693 | { |
2694 | case WP_DELETED: | |
2695 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2696 | /* Actually this is superfluous, because by the time we |
2697 | call print_it_typical() the wp will be already deleted, | |
2698 | and the function will return immediately. */ | |
c5aa993b JM |
2699 | bs->print_it = print_it_done; |
2700 | /* Stop. */ | |
2701 | break; | |
2702 | case WP_VALUE_CHANGED: | |
2703 | /* Stop. */ | |
2704 | ++(b->hit_count); | |
2705 | break; | |
2706 | case WP_VALUE_NOT_CHANGED: | |
2707 | /* Don't stop. */ | |
2708 | bs->print_it = print_it_noop; | |
2709 | bs->stop = 0; | |
c5aa993b JM |
2710 | continue; |
2711 | default: | |
2712 | /* Can't happen. */ | |
2713 | /* FALLTHROUGH */ | |
2714 | case 0: | |
2715 | /* Error from catch_errors. */ | |
2716 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2717 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2718 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2719 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2720 | /* We've already printed what needs to be printed. */ |
2721 | bs->print_it = print_it_done; | |
2722 | ||
2723 | /* Stop. */ | |
2724 | break; | |
2725 | } | |
2726 | } | |
53a5351d JM |
2727 | else if (b->type == bp_read_watchpoint || |
2728 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2729 | { |
2730 | CORE_ADDR addr; | |
278cd55f | 2731 | struct value *v; |
c5aa993b JM |
2732 | int found = 0; |
2733 | ||
2734 | addr = target_stopped_data_address (); | |
2735 | if (addr == 0) | |
2736 | continue; | |
2737 | for (v = b->val_chain; v; v = v->next) | |
2738 | { | |
5c44784c JM |
2739 | if (VALUE_LVAL (v) == lval_memory |
2740 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2741 | { |
2e70b7b9 MS |
2742 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2743 | ||
2744 | if (v == b->val_chain | |
2745 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2746 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2747 | { | |
2748 | CORE_ADDR vaddr; | |
2749 | ||
2750 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2751 | /* Exact match not required. Within range is | |
2752 | sufficient. */ | |
2753 | if (addr >= vaddr && | |
2754 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2755 | found = 1; | |
2756 | } | |
c5aa993b JM |
2757 | } |
2758 | } | |
2759 | if (found) | |
9ebf4acf AC |
2760 | { |
2761 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2762 | b->number); | |
2763 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2764 | int e = catch_errors (watchpoint_check, bs, message, | |
2765 | RETURN_MASK_ALL); | |
2766 | do_cleanups (cleanups); | |
2767 | switch (e) | |
2768 | { | |
2769 | case WP_DELETED: | |
2770 | /* We've already printed what needs to be printed. */ | |
2771 | bs->print_it = print_it_done; | |
2772 | /* Stop. */ | |
2773 | break; | |
2774 | case WP_VALUE_CHANGED: | |
2775 | if (b->type == bp_read_watchpoint) | |
2776 | { | |
2777 | /* Don't stop: read watchpoints shouldn't fire if | |
2778 | the value has changed. This is for targets | |
2779 | which cannot set read-only watchpoints. */ | |
2780 | bs->print_it = print_it_noop; | |
2781 | bs->stop = 0; | |
2782 | continue; | |
2783 | } | |
2784 | ++(b->hit_count); | |
2785 | break; | |
2786 | case WP_VALUE_NOT_CHANGED: | |
2787 | /* Stop. */ | |
2788 | ++(b->hit_count); | |
2789 | break; | |
2790 | default: | |
2791 | /* Can't happen. */ | |
2792 | case 0: | |
2793 | /* Error from catch_errors. */ | |
2794 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2795 | if (b->related_breakpoint) | |
2796 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2797 | b->disposition = disp_del_at_next_stop; | |
2798 | /* We've already printed what needs to be printed. */ | |
2799 | bs->print_it = print_it_done; | |
2800 | break; | |
2801 | } | |
2802 | } | |
53a5351d JM |
2803 | else /* found == 0 */ |
2804 | { | |
2805 | /* This is a case where some watchpoint(s) triggered, | |
2806 | but not at the address of this watchpoint (FOUND | |
2807 | was left zero). So don't print anything for this | |
2808 | watchpoint. */ | |
2809 | bs->print_it = print_it_noop; | |
2810 | bs->stop = 0; | |
2811 | continue; | |
2812 | } | |
c5aa993b JM |
2813 | } |
2814 | else | |
2815 | { | |
2816 | /* By definition, an encountered breakpoint is a triggered | |
2817 | breakpoint. */ | |
2818 | ++(b->hit_count); | |
c906108c | 2819 | |
c5aa993b JM |
2820 | real_breakpoint = 1; |
2821 | } | |
2822 | ||
818dd999 AC |
2823 | if (frame_id_p (b->frame_id) |
2824 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2825 | bs->stop = 0; |
2826 | else | |
2827 | { | |
2828 | int value_is_zero = 0; | |
2829 | ||
2830 | if (b->cond) | |
2831 | { | |
2832 | /* Need to select the frame, with all that implies | |
2833 | so that the conditions will have the right context. */ | |
0f7d239c | 2834 | select_frame (get_current_frame ()); |
c5aa993b JM |
2835 | value_is_zero |
2836 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2837 | "Error in testing breakpoint condition:\n", | |
2838 | RETURN_MASK_ALL); | |
2839 | /* FIXME-someday, should give breakpoint # */ | |
2840 | free_all_values (); | |
2841 | } | |
2842 | if (b->cond && value_is_zero) | |
2843 | { | |
2844 | bs->stop = 0; | |
2845 | /* Don't consider this a hit. */ | |
2846 | --(b->hit_count); | |
2847 | } | |
fa5281d0 DJ |
2848 | else if (b->thread != -1 && b->thread != thread_id) |
2849 | { | |
2850 | bs->stop = 0; | |
2851 | /* Don't consider this a hit. */ | |
2852 | --(b->hit_count); | |
2853 | } | |
c5aa993b JM |
2854 | else if (b->ignore_count > 0) |
2855 | { | |
2856 | b->ignore_count--; | |
5c44784c | 2857 | annotate_ignore_count_change (); |
c5aa993b JM |
2858 | bs->stop = 0; |
2859 | } | |
2860 | else | |
2861 | { | |
2862 | /* We will stop here */ | |
b5de0fa7 EZ |
2863 | if (b->disposition == disp_disable) |
2864 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2865 | if (b->silent) |
2866 | bs->print = 0; | |
552f4abf | 2867 | bs->commands = b->commands; |
c5aa993b | 2868 | if (bs->commands && |
6314a349 AC |
2869 | (strcmp ("silent", bs->commands->line) == 0 |
2870 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
2871 | { |
2872 | bs->commands = bs->commands->next; | |
c906108c | 2873 | bs->print = 0; |
c5aa993b | 2874 | } |
552f4abf | 2875 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2876 | } |
2877 | } | |
2878 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2879 | if (bs->stop == 0 || bs->print == 0) | |
2880 | bs->print_it = print_it_noop; | |
2881 | } | |
c906108c SS |
2882 | |
2883 | bs->next = NULL; /* Terminate the chain */ | |
2884 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2885 | ||
c906108c SS |
2886 | /* The value of a hardware watchpoint hasn't changed, but the |
2887 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2888 | if (bs && !bs->stop && |
c906108c SS |
2889 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2890 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2891 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2892 | { | |
2893 | remove_breakpoints (); | |
2894 | insert_breakpoints (); | |
2895 | } | |
2896 | return bs; | |
2897 | } | |
2898 | \f | |
2899 | /* Tell what to do about this bpstat. */ | |
2900 | struct bpstat_what | |
fba45db2 | 2901 | bpstat_what (bpstat bs) |
c906108c SS |
2902 | { |
2903 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2904 | enum class |
2905 | { | |
2906 | /* This bpstat element has no effect on the main_action. */ | |
2907 | no_effect = 0, | |
2908 | ||
2909 | /* There was a watchpoint, stop but don't print. */ | |
2910 | wp_silent, | |
c906108c | 2911 | |
c5aa993b JM |
2912 | /* There was a watchpoint, stop and print. */ |
2913 | wp_noisy, | |
c906108c | 2914 | |
c5aa993b JM |
2915 | /* There was a breakpoint but we're not stopping. */ |
2916 | bp_nostop, | |
c906108c | 2917 | |
c5aa993b JM |
2918 | /* There was a breakpoint, stop but don't print. */ |
2919 | bp_silent, | |
c906108c | 2920 | |
c5aa993b JM |
2921 | /* There was a breakpoint, stop and print. */ |
2922 | bp_noisy, | |
c906108c | 2923 | |
c5aa993b JM |
2924 | /* We hit the longjmp breakpoint. */ |
2925 | long_jump, | |
c906108c | 2926 | |
c5aa993b JM |
2927 | /* We hit the longjmp_resume breakpoint. */ |
2928 | long_resume, | |
c906108c | 2929 | |
c5aa993b JM |
2930 | /* We hit the step_resume breakpoint. */ |
2931 | step_resume, | |
c906108c | 2932 | |
c5aa993b JM |
2933 | /* We hit the through_sigtramp breakpoint. */ |
2934 | through_sig, | |
c906108c | 2935 | |
c5aa993b JM |
2936 | /* We hit the shared library event breakpoint. */ |
2937 | shlib_event, | |
c906108c | 2938 | |
c5aa993b JM |
2939 | /* We caught a shared library event. */ |
2940 | catch_shlib_event, | |
c906108c | 2941 | |
c5aa993b JM |
2942 | /* This is just used to count how many enums there are. */ |
2943 | class_last | |
c906108c SS |
2944 | }; |
2945 | ||
2946 | /* Here is the table which drives this routine. So that we can | |
2947 | format it pretty, we define some abbreviations for the | |
2948 | enum bpstat_what codes. */ | |
2949 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2950 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2951 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2952 | #define sgl BPSTAT_WHAT_SINGLE | |
2953 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2954 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2955 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2956 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2957 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2958 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2959 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2960 | ||
2961 | /* "Can't happen." Might want to print an error message. | |
2962 | abort() is not out of the question, but chances are GDB is just | |
2963 | a bit confused, not unusable. */ | |
2964 | #define err BPSTAT_WHAT_STOP_NOISY | |
2965 | ||
2966 | /* Given an old action and a class, come up with a new action. */ | |
2967 | /* One interesting property of this table is that wp_silent is the same | |
2968 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2969 | after stopping, the check for whether to step over a breakpoint | |
2970 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2971 | reference to how we stopped. We retain separate wp_silent and |
2972 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2973 | |
2974 | Another possibly interesting property of this table is that | |
2975 | there's a partial ordering, priority-like, of the actions. Once | |
2976 | you've decided that some action is appropriate, you'll never go | |
2977 | back and decide something of a lower priority is better. The | |
2978 | ordering is: | |
2979 | ||
7e73cedf | 2980 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2981 | sgl < clrs shl shlr slr sn sr ss ts |
2982 | slr < err shl shlr sn sr ss ts | |
2983 | clr < clrs err shl shlr sn sr ss ts | |
2984 | clrs < err shl shlr sn sr ss ts | |
2985 | ss < shl shlr sn sr ts | |
2986 | sn < shl shlr sr ts | |
2987 | sr < shl shlr ts | |
2988 | shl < shlr | |
2989 | ts < | |
2990 | shlr < | |
2991 | ||
43ff13b4 JM |
2992 | What I think this means is that we don't need a damned table |
2993 | here. If you just put the rows and columns in the right order, | |
2994 | it'd look awfully regular. We could simply walk the bpstat list | |
2995 | and choose the highest priority action we find, with a little | |
2996 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2997 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2998 | is messy anyway). */ | |
c906108c SS |
2999 | |
3000 | /* step_resume entries: a step resume breakpoint overrides another | |
3001 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3002 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3003 | /* We handle the through_sigtramp_breakpoint the same way; having both |
3004 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
3005 | ||
3006 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3007 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3008 | { | |
3009 | /* old action */ | |
3010 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
3011 | */ | |
3012 | /*no_effect */ | |
3013 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
3014 | /*wp_silent */ | |
3015 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3016 | /*wp_noisy */ | |
3017 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3018 | /*bp_nostop */ | |
3019 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
3020 | /*bp_silent */ | |
3021 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3022 | /*bp_noisy */ | |
3023 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3024 | /*long_jump */ | |
a48bb0b3 | 3025 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
3026 | /*long_resume */ |
3027 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
3028 | /*step_resume */ | |
3029 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
3030 | /*through_sig */ | |
3031 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
3032 | /*shlib */ | |
3033 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
3034 | /*catch_shlib */ | |
3035 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
3036 | }; | |
c906108c SS |
3037 | |
3038 | #undef kc | |
3039 | #undef ss | |
3040 | #undef sn | |
3041 | #undef sgl | |
3042 | #undef slr | |
3043 | #undef clr | |
3044 | #undef clrs | |
3045 | #undef err | |
3046 | #undef sr | |
3047 | #undef ts | |
3048 | #undef shl | |
3049 | #undef shlr | |
3050 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3051 | struct bpstat_what retval; | |
3052 | ||
3053 | retval.call_dummy = 0; | |
3054 | for (; bs != NULL; bs = bs->next) | |
3055 | { | |
3056 | enum class bs_class = no_effect; | |
3057 | if (bs->breakpoint_at == NULL) | |
3058 | /* I suspect this can happen if it was a momentary breakpoint | |
3059 | which has since been deleted. */ | |
3060 | continue; | |
3061 | switch (bs->breakpoint_at->type) | |
3062 | { | |
3063 | case bp_none: | |
3064 | continue; | |
3065 | ||
3066 | case bp_breakpoint: | |
3067 | case bp_hardware_breakpoint: | |
3068 | case bp_until: | |
3069 | case bp_finish: | |
3070 | if (bs->stop) | |
3071 | { | |
3072 | if (bs->print) | |
3073 | bs_class = bp_noisy; | |
3074 | else | |
3075 | bs_class = bp_silent; | |
3076 | } | |
3077 | else | |
3078 | bs_class = bp_nostop; | |
3079 | break; | |
3080 | case bp_watchpoint: | |
3081 | case bp_hardware_watchpoint: | |
3082 | case bp_read_watchpoint: | |
3083 | case bp_access_watchpoint: | |
3084 | if (bs->stop) | |
3085 | { | |
3086 | if (bs->print) | |
3087 | bs_class = wp_noisy; | |
3088 | else | |
3089 | bs_class = wp_silent; | |
3090 | } | |
3091 | else | |
53a5351d JM |
3092 | /* There was a watchpoint, but we're not stopping. |
3093 | This requires no further action. */ | |
c906108c SS |
3094 | bs_class = no_effect; |
3095 | break; | |
3096 | case bp_longjmp: | |
3097 | bs_class = long_jump; | |
3098 | break; | |
3099 | case bp_longjmp_resume: | |
3100 | bs_class = long_resume; | |
3101 | break; | |
3102 | case bp_step_resume: | |
3103 | if (bs->stop) | |
3104 | { | |
3105 | bs_class = step_resume; | |
3106 | } | |
3107 | else | |
3108 | /* It is for the wrong frame. */ | |
3109 | bs_class = bp_nostop; | |
3110 | break; | |
3111 | case bp_through_sigtramp: | |
3112 | bs_class = through_sig; | |
3113 | break; | |
3114 | case bp_watchpoint_scope: | |
3115 | bs_class = bp_nostop; | |
3116 | break; | |
c5aa993b JM |
3117 | case bp_shlib_event: |
3118 | bs_class = shlib_event; | |
3119 | break; | |
c4093a6a | 3120 | case bp_thread_event: |
1900040c | 3121 | case bp_overlay_event: |
c4093a6a JM |
3122 | bs_class = bp_nostop; |
3123 | break; | |
c5aa993b JM |
3124 | case bp_catch_load: |
3125 | case bp_catch_unload: | |
3126 | /* Only if this catchpoint triggered should we cause the | |
3127 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3128 | catchpoint. */ | |
3129 | if (bs->stop) | |
3130 | bs_class = catch_shlib_event; | |
3131 | else | |
3132 | bs_class = no_effect; | |
3133 | break; | |
3134 | case bp_catch_fork: | |
3135 | case bp_catch_vfork: | |
3136 | case bp_catch_exec: | |
3137 | if (bs->stop) | |
3138 | { | |
3139 | if (bs->print) | |
3140 | bs_class = bp_noisy; | |
3141 | else | |
3142 | bs_class = bp_silent; | |
3143 | } | |
3144 | else | |
53a5351d JM |
3145 | /* There was a catchpoint, but we're not stopping. |
3146 | This requires no further action. */ | |
c5aa993b JM |
3147 | bs_class = no_effect; |
3148 | break; | |
3149 | case bp_catch_catch: | |
3150 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3151 | bs_class = bp_nostop; | |
3152 | else if (bs->stop) | |
3153 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3154 | break; | |
3155 | case bp_catch_throw: | |
3156 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3157 | bs_class = bp_nostop; | |
3158 | else if (bs->stop) | |
3159 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3160 | break; |
c906108c | 3161 | case bp_call_dummy: |
53a5351d JM |
3162 | /* Make sure the action is stop (silent or noisy), |
3163 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3164 | bs_class = bp_silent; |
3165 | retval.call_dummy = 1; | |
3166 | break; | |
3167 | } | |
c5aa993b | 3168 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3169 | } |
3170 | retval.main_action = current_action; | |
3171 | return retval; | |
3172 | } | |
3173 | ||
3174 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3175 | without hardware support). This isn't related to a specific bpstat, | |
3176 | just to things like whether watchpoints are set. */ | |
3177 | ||
c5aa993b | 3178 | int |
fba45db2 | 3179 | bpstat_should_step (void) |
c906108c SS |
3180 | { |
3181 | struct breakpoint *b; | |
3182 | ALL_BREAKPOINTS (b) | |
468d015d | 3183 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3184 | return 1; |
c906108c SS |
3185 | return 0; |
3186 | } | |
3187 | ||
3188 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3189 | int | |
fba45db2 | 3190 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3191 | { |
075f6582 DJ |
3192 | struct bp_location *bpt; |
3193 | ALL_BP_LOCATIONS (bpt) | |
468d015d | 3194 | if (breakpoint_enabled (bpt->owner) |
075f6582 DJ |
3195 | && bpt->inserted |
3196 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3197 | return 1; |
c906108c SS |
3198 | return 0; |
3199 | } | |
c906108c | 3200 | \f |
c5aa993b | 3201 | |
c906108c SS |
3202 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3203 | function returns another bpstat which contains only the catchpoints | |
3204 | on that first list, if any. */ | |
3205 | void | |
fba45db2 | 3206 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3207 | { |
3208 | struct bpstats root_bs[1]; | |
3209 | bpstat bs = root_bs; | |
3210 | struct breakpoint *ep; | |
3211 | char *dll_pathname; | |
3212 | ||
c906108c SS |
3213 | bpstat_clear (cp_list); |
3214 | root_bs->next = NULL; | |
c5aa993b JM |
3215 | |
3216 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3217 | { |
3218 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3219 | ep = ep_list->breakpoint_at; | |
3220 | if (ep == NULL) | |
c5aa993b JM |
3221 | break; |
3222 | if ((ep->type != bp_catch_load) && | |
3223 | (ep->type != bp_catch_unload) && | |
3224 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3225 | (ep->type != bp_catch_throw)) |
3226 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3227 | continue; |
3228 | ||
c906108c SS |
3229 | /* Yes; add it to the list. */ |
3230 | bs = bpstat_alloc (ep, bs); | |
3231 | *bs = *ep_list; | |
3232 | bs->next = NULL; | |
3233 | bs = root_bs->next; | |
c5aa993b | 3234 | |
c906108c SS |
3235 | #if defined(SOLIB_ADD) |
3236 | /* Also, for each triggered catchpoint, tag it with the name of | |
3237 | the library that caused this trigger. (We copy the name now, | |
3238 | because it's only guaranteed to be available NOW, when the | |
3239 | catchpoint triggers. Clients who may wish to know the name | |
3240 | later must get it from the catchpoint itself.) */ | |
3241 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3242 | xfree (ep->triggered_dll_pathname); |
c906108c | 3243 | if (ep->type == bp_catch_load) |
39f77062 KB |
3244 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3245 | PIDGET (inferior_ptid)); | |
c906108c | 3246 | else |
39f77062 KB |
3247 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3248 | PIDGET (inferior_ptid)); | |
c906108c SS |
3249 | #else |
3250 | dll_pathname = NULL; | |
3251 | #endif | |
3252 | if (dll_pathname) | |
3253 | { | |
53a5351d JM |
3254 | ep->triggered_dll_pathname = (char *) |
3255 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3256 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3257 | } | |
3258 | else | |
3259 | ep->triggered_dll_pathname = NULL; | |
3260 | } | |
c5aa993b | 3261 | |
c906108c SS |
3262 | *cp_list = bs; |
3263 | } | |
3264 | ||
c4093a6a | 3265 | /* Print B to gdb_stdout. */ |
c906108c | 3266 | static void |
c4093a6a JM |
3267 | print_one_breakpoint (struct breakpoint *b, |
3268 | CORE_ADDR *last_addr) | |
c906108c | 3269 | { |
52f0bd74 AC |
3270 | struct command_line *l; |
3271 | struct symbol *sym; | |
c4093a6a JM |
3272 | struct ep_type_description |
3273 | { | |
3274 | enum bptype type; | |
3275 | char *description; | |
3276 | }; | |
3277 | static struct ep_type_description bptypes[] = | |
c906108c | 3278 | { |
c5aa993b JM |
3279 | {bp_none, "?deleted?"}, |
3280 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3281 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3282 | {bp_until, "until"}, |
3283 | {bp_finish, "finish"}, | |
3284 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3285 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3286 | {bp_read_watchpoint, "read watchpoint"}, |
3287 | {bp_access_watchpoint, "acc watchpoint"}, | |
3288 | {bp_longjmp, "longjmp"}, | |
3289 | {bp_longjmp_resume, "longjmp resume"}, | |
3290 | {bp_step_resume, "step resume"}, | |
3291 | {bp_through_sigtramp, "sigtramp"}, | |
3292 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3293 | {bp_call_dummy, "call dummy"}, | |
3294 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3295 | {bp_thread_event, "thread events"}, |
1900040c | 3296 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3297 | {bp_catch_load, "catch load"}, |
3298 | {bp_catch_unload, "catch unload"}, | |
3299 | {bp_catch_fork, "catch fork"}, | |
3300 | {bp_catch_vfork, "catch vfork"}, | |
3301 | {bp_catch_exec, "catch exec"}, | |
3302 | {bp_catch_catch, "catch catch"}, | |
3303 | {bp_catch_throw, "catch throw"} | |
3304 | }; | |
c4093a6a | 3305 | |
c5aa993b JM |
3306 | static char *bpdisps[] = |
3307 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3308 | static char bpenables[] = "nynny"; |
c906108c | 3309 | char wrap_indent[80]; |
8b93c638 JM |
3310 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3311 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3312 | struct cleanup *bkpt_chain; |
c906108c | 3313 | |
c4093a6a | 3314 | annotate_record (); |
3b31d625 | 3315 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3316 | |
3317 | /* 1 */ | |
3318 | annotate_field (0); | |
8b93c638 | 3319 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3320 | |
3321 | /* 2 */ | |
3322 | annotate_field (1); | |
3323 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3324 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3325 | internal_error (__FILE__, __LINE__, |
3326 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3327 | (int) b->type); |
8b93c638 | 3328 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3329 | |
3330 | /* 3 */ | |
3331 | annotate_field (2); | |
8b93c638 | 3332 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3333 | |
3334 | /* 4 */ | |
3335 | annotate_field (3); | |
b5de0fa7 | 3336 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3337 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3338 | |
3339 | /* 5 and 6 */ | |
3340 | strcpy (wrap_indent, " "); | |
3341 | if (addressprint) | |
75ac9d7b MS |
3342 | { |
3343 | if (TARGET_ADDR_BIT <= 32) | |
3344 | strcat (wrap_indent, " "); | |
3345 | else | |
3346 | strcat (wrap_indent, " "); | |
3347 | } | |
c906108c | 3348 | |
3086aeae DJ |
3349 | if (b->ops != NULL && b->ops->print_one != NULL) |
3350 | b->ops->print_one (b, last_addr); | |
3351 | else | |
3352 | switch (b->type) | |
3353 | { | |
3354 | case bp_none: | |
3355 | internal_error (__FILE__, __LINE__, | |
3356 | "print_one_breakpoint: bp_none encountered\n"); | |
3357 | break; | |
c906108c | 3358 | |
3086aeae DJ |
3359 | case bp_watchpoint: |
3360 | case bp_hardware_watchpoint: | |
3361 | case bp_read_watchpoint: | |
3362 | case bp_access_watchpoint: | |
3363 | /* Field 4, the address, is omitted (which makes the columns | |
3364 | not line up too nicely with the headers, but the effect | |
3365 | is relatively readable). */ | |
3366 | if (addressprint) | |
3367 | ui_out_field_skip (uiout, "addr"); | |
3368 | annotate_field (5); | |
3369 | print_expression (b->exp, stb->stream); | |
3370 | ui_out_field_stream (uiout, "what", stb); | |
3371 | break; | |
3372 | ||
3373 | case bp_catch_load: | |
3374 | case bp_catch_unload: | |
3375 | /* Field 4, the address, is omitted (which makes the columns | |
3376 | not line up too nicely with the headers, but the effect | |
3377 | is relatively readable). */ | |
3378 | if (addressprint) | |
3379 | ui_out_field_skip (uiout, "addr"); | |
3380 | annotate_field (5); | |
3381 | if (b->dll_pathname == NULL) | |
3382 | { | |
3383 | ui_out_field_string (uiout, "what", "<any library>"); | |
3384 | ui_out_spaces (uiout, 1); | |
3385 | } | |
3386 | else | |
3387 | { | |
3388 | ui_out_text (uiout, "library \""); | |
3389 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3390 | ui_out_text (uiout, "\" "); | |
3391 | } | |
3392 | break; | |
3393 | ||
3394 | case bp_catch_fork: | |
3395 | case bp_catch_vfork: | |
3396 | /* Field 4, the address, is omitted (which makes the columns | |
3397 | not line up too nicely with the headers, but the effect | |
3398 | is relatively readable). */ | |
3399 | if (addressprint) | |
3400 | ui_out_field_skip (uiout, "addr"); | |
3401 | annotate_field (5); | |
3402 | if (b->forked_inferior_pid != 0) | |
3403 | { | |
3404 | ui_out_text (uiout, "process "); | |
3405 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3406 | ui_out_spaces (uiout, 1); | |
3407 | } | |
3408 | ||
3409 | case bp_catch_exec: | |
3410 | /* Field 4, the address, is omitted (which makes the columns | |
3411 | not line up too nicely with the headers, but the effect | |
3412 | is relatively readable). */ | |
3413 | if (addressprint) | |
3414 | ui_out_field_skip (uiout, "addr"); | |
3415 | annotate_field (5); | |
3416 | if (b->exec_pathname != NULL) | |
3417 | { | |
3418 | ui_out_text (uiout, "program \""); | |
3419 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3420 | ui_out_text (uiout, "\" "); | |
3421 | } | |
3422 | break; | |
3423 | ||
3424 | case bp_catch_catch: | |
3425 | /* Field 4, the address, is omitted (which makes the columns | |
3426 | not line up too nicely with the headers, but the effect | |
3427 | is relatively readable). */ | |
3428 | if (addressprint) | |
3429 | ui_out_field_skip (uiout, "addr"); | |
3430 | annotate_field (5); | |
3431 | ui_out_field_string (uiout, "what", "exception catch"); | |
3432 | ui_out_spaces (uiout, 1); | |
3433 | break; | |
3434 | ||
3435 | case bp_catch_throw: | |
3436 | /* Field 4, the address, is omitted (which makes the columns | |
3437 | not line up too nicely with the headers, but the effect | |
3438 | is relatively readable). */ | |
3439 | if (addressprint) | |
3440 | ui_out_field_skip (uiout, "addr"); | |
3441 | annotate_field (5); | |
3442 | ui_out_field_string (uiout, "what", "exception throw"); | |
3443 | ui_out_spaces (uiout, 1); | |
3444 | break; | |
3445 | ||
3446 | case bp_breakpoint: | |
3447 | case bp_hardware_breakpoint: | |
3448 | case bp_until: | |
3449 | case bp_finish: | |
3450 | case bp_longjmp: | |
3451 | case bp_longjmp_resume: | |
3452 | case bp_step_resume: | |
3453 | case bp_through_sigtramp: | |
3454 | case bp_watchpoint_scope: | |
3455 | case bp_call_dummy: | |
3456 | case bp_shlib_event: | |
3457 | case bp_thread_event: | |
3458 | case bp_overlay_event: | |
3459 | if (addressprint) | |
3460 | { | |
3461 | annotate_field (4); | |
0101ce28 | 3462 | if (b->pending) |
d5479188 | 3463 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 JJ |
3464 | else |
3465 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
3466 | } |
3467 | annotate_field (5); | |
5cab636d | 3468 | *last_addr = b->loc->address; |
3086aeae DJ |
3469 | if (b->source_file) |
3470 | { | |
cf3a9e5b | 3471 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3472 | if (sym) |
3473 | { | |
3474 | ui_out_text (uiout, "in "); | |
3475 | ui_out_field_string (uiout, "func", | |
3476 | SYMBOL_PRINT_NAME (sym)); | |
3477 | ui_out_wrap_hint (uiout, wrap_indent); | |
3478 | ui_out_text (uiout, " at "); | |
3479 | } | |
3480 | ui_out_field_string (uiout, "file", b->source_file); | |
3481 | ui_out_text (uiout, ":"); | |
3482 | ui_out_field_int (uiout, "line", b->line_number); | |
3483 | } | |
0101ce28 JJ |
3484 | else if (b->pending) |
3485 | { | |
3486 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3487 | } | |
3086aeae DJ |
3488 | else |
3489 | { | |
5cab636d | 3490 | print_address_symbolic (b->loc->address, stb->stream, demangle, ""); |
3086aeae DJ |
3491 | ui_out_field_stream (uiout, "at", stb); |
3492 | } | |
3493 | break; | |
3494 | } | |
c906108c | 3495 | |
c4093a6a JM |
3496 | if (b->thread != -1) |
3497 | { | |
8b93c638 JM |
3498 | /* FIXME: This seems to be redundant and lost here; see the |
3499 | "stop only in" line a little further down. */ | |
3500 | ui_out_text (uiout, " thread "); | |
3501 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3502 | } |
3503 | ||
8b93c638 | 3504 | ui_out_text (uiout, "\n"); |
c4093a6a | 3505 | |
818dd999 | 3506 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3507 | { |
3508 | annotate_field (6); | |
8b93c638 | 3509 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3510 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3511 | the frame ID. */ | |
d0a55772 | 3512 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3513 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3514 | } |
3515 | ||
3516 | if (b->cond) | |
3517 | { | |
3518 | annotate_field (7); | |
8b93c638 JM |
3519 | ui_out_text (uiout, "\tstop only if "); |
3520 | print_expression (b->cond, stb->stream); | |
3521 | ui_out_field_stream (uiout, "cond", stb); | |
3522 | ui_out_text (uiout, "\n"); | |
c4093a6a | 3523 | } |
0101ce28 JJ |
3524 | |
3525 | if (b->pending && b->cond_string) | |
3526 | { | |
3527 | annotate_field (7); | |
3528 | ui_out_text (uiout, "\tstop only if "); | |
3529 | ui_out_field_string (uiout, "cond", b->cond_string); | |
3530 | ui_out_text (uiout, "\n"); | |
3531 | } | |
3532 | ||
c4093a6a JM |
3533 | if (b->thread != -1) |
3534 | { | |
3535 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3536 | ui_out_text (uiout, "\tstop only in thread "); |
3537 | ui_out_field_int (uiout, "thread", b->thread); | |
3538 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3539 | } |
3540 | ||
3541 | if (show_breakpoint_hit_counts && b->hit_count) | |
3542 | { | |
3543 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3544 | if (ep_is_catchpoint (b)) |
3545 | ui_out_text (uiout, "\tcatchpoint"); | |
3546 | else | |
3547 | ui_out_text (uiout, "\tbreakpoint"); | |
3548 | ui_out_text (uiout, " already hit "); | |
3549 | ui_out_field_int (uiout, "times", b->hit_count); | |
3550 | if (b->hit_count == 1) | |
3551 | ui_out_text (uiout, " time\n"); | |
3552 | else | |
3553 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3554 | } |
3555 | ||
fb40c209 AC |
3556 | /* Output the count also if it is zero, but only if this is |
3557 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3558 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3559 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3560 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3561 | |
c4093a6a JM |
3562 | if (b->ignore_count) |
3563 | { | |
3564 | annotate_field (8); | |
8b93c638 JM |
3565 | ui_out_text (uiout, "\tignore next "); |
3566 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3567 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3568 | } |
3569 | ||
3570 | if ((l = b->commands)) | |
3571 | { | |
3b31d625 EZ |
3572 | struct cleanup *script_chain; |
3573 | ||
c4093a6a | 3574 | annotate_field (9); |
3b31d625 | 3575 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3576 | print_command_lines (uiout, l, 4); |
3b31d625 | 3577 | do_cleanups (script_chain); |
c4093a6a | 3578 | } |
3b31d625 | 3579 | do_cleanups (bkpt_chain); |
8b93c638 | 3580 | do_cleanups (old_chain); |
c4093a6a | 3581 | } |
c5aa993b | 3582 | |
c4093a6a JM |
3583 | struct captured_breakpoint_query_args |
3584 | { | |
3585 | int bnum; | |
3586 | }; | |
c5aa993b | 3587 | |
c4093a6a | 3588 | static int |
2b65245e | 3589 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3590 | { |
3591 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3592 | struct breakpoint *b; |
c4093a6a JM |
3593 | CORE_ADDR dummy_addr = 0; |
3594 | ALL_BREAKPOINTS (b) | |
3595 | { | |
3596 | if (args->bnum == b->number) | |
c5aa993b | 3597 | { |
c4093a6a JM |
3598 | print_one_breakpoint (b, &dummy_addr); |
3599 | return GDB_RC_OK; | |
c5aa993b | 3600 | } |
c4093a6a JM |
3601 | } |
3602 | return GDB_RC_NONE; | |
3603 | } | |
c5aa993b | 3604 | |
c4093a6a | 3605 | enum gdb_rc |
2b65245e | 3606 | gdb_breakpoint_query (struct ui_out *uiout, int bnum) |
c4093a6a JM |
3607 | { |
3608 | struct captured_breakpoint_query_args args; | |
3609 | args.bnum = bnum; | |
3610 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3611 | an error. */ | |
2b65245e AC |
3612 | return catch_exceptions (uiout, do_captured_breakpoint_query, &args, |
3613 | NULL, RETURN_MASK_ALL); | |
c4093a6a | 3614 | } |
c5aa993b | 3615 | |
7f3b0473 AC |
3616 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3617 | catchpoints, et.al.). */ | |
3618 | ||
3619 | static int | |
3620 | user_settable_breakpoint (const struct breakpoint *b) | |
3621 | { | |
3622 | return (b->type == bp_breakpoint | |
3623 | || b->type == bp_catch_load | |
3624 | || b->type == bp_catch_unload | |
3625 | || b->type == bp_catch_fork | |
3626 | || b->type == bp_catch_vfork | |
3627 | || b->type == bp_catch_exec | |
3628 | || b->type == bp_catch_catch | |
3629 | || b->type == bp_catch_throw | |
3630 | || b->type == bp_hardware_breakpoint | |
3631 | || b->type == bp_watchpoint | |
3632 | || b->type == bp_read_watchpoint | |
3633 | || b->type == bp_access_watchpoint | |
3634 | || b->type == bp_hardware_watchpoint); | |
3635 | } | |
3636 | ||
3637 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3638 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3639 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3640 | |
c4093a6a | 3641 | static void |
fba45db2 | 3642 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3643 | { |
52f0bd74 | 3644 | struct breakpoint *b; |
c4093a6a | 3645 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3646 | int nr_printable_breakpoints; |
3b31d625 | 3647 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3648 | |
7f3b0473 AC |
3649 | /* Compute the number of rows in the table. */ |
3650 | nr_printable_breakpoints = 0; | |
3651 | ALL_BREAKPOINTS (b) | |
3652 | if (bnum == -1 | |
3653 | || bnum == b->number) | |
3654 | { | |
3655 | if (allflag || user_settable_breakpoint (b)) | |
3656 | nr_printable_breakpoints++; | |
3657 | } | |
3658 | ||
8b93c638 | 3659 | if (addressprint) |
3b31d625 EZ |
3660 | bkpttbl_chain |
3661 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3662 | "BreakpointTable"); | |
8b93c638 | 3663 | else |
3b31d625 EZ |
3664 | bkpttbl_chain |
3665 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3666 | "BreakpointTable"); | |
8b93c638 | 3667 | |
7f3b0473 | 3668 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3669 | annotate_breakpoints_headers (); |
3670 | if (nr_printable_breakpoints > 0) | |
3671 | annotate_field (0); | |
3672 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3673 | if (nr_printable_breakpoints > 0) | |
3674 | annotate_field (1); | |
3675 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3676 | if (nr_printable_breakpoints > 0) | |
3677 | annotate_field (2); | |
3678 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3679 | if (nr_printable_breakpoints > 0) | |
3680 | annotate_field (3); | |
3681 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3682 | if (addressprint) | |
7f3b0473 | 3683 | { |
d7faa9e7 AC |
3684 | if (nr_printable_breakpoints > 0) |
3685 | annotate_field (4); | |
7f3b0473 | 3686 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3687 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3688 | else |
b25959ec | 3689 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3690 | } |
d7faa9e7 AC |
3691 | if (nr_printable_breakpoints > 0) |
3692 | annotate_field (5); | |
3693 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3694 | ui_out_table_body (uiout); | |
3695 | if (nr_printable_breakpoints > 0) | |
3696 | annotate_breakpoints_table (); | |
7f3b0473 | 3697 | |
c4093a6a JM |
3698 | ALL_BREAKPOINTS (b) |
3699 | if (bnum == -1 | |
3700 | || bnum == b->number) | |
3701 | { | |
3702 | /* We only print out user settable breakpoints unless the | |
3703 | allflag is set. */ | |
7f3b0473 AC |
3704 | if (allflag || user_settable_breakpoint (b)) |
3705 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3706 | } |
3707 | ||
3b31d625 | 3708 | do_cleanups (bkpttbl_chain); |
698384cd | 3709 | |
7f3b0473 | 3710 | if (nr_printable_breakpoints == 0) |
c906108c | 3711 | { |
8b93c638 JM |
3712 | if (bnum == -1) |
3713 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3714 | else | |
3715 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3716 | bnum); | |
c906108c SS |
3717 | } |
3718 | else | |
c4093a6a JM |
3719 | { |
3720 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3721 | that a comparison of an unsigned with -1 is always false. */ | |
3722 | if (last_addr != (CORE_ADDR) -1) | |
3723 | set_next_address (last_addr); | |
3724 | } | |
c906108c | 3725 | |
c4093a6a JM |
3726 | /* FIXME? Should this be moved up so that it is only called when |
3727 | there have been breakpoints? */ | |
c906108c SS |
3728 | annotate_breakpoints_table_end (); |
3729 | } | |
3730 | ||
c906108c | 3731 | static void |
fba45db2 | 3732 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3733 | { |
3734 | int bnum = -1; | |
3735 | ||
3736 | if (bnum_exp) | |
bb518678 | 3737 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3738 | |
3739 | breakpoint_1 (bnum, 0); | |
3740 | } | |
3741 | ||
7a292a7a | 3742 | static void |
fba45db2 | 3743 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3744 | { |
3745 | int bnum = -1; | |
3746 | ||
3747 | if (bnum_exp) | |
bb518678 | 3748 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3749 | |
3750 | breakpoint_1 (bnum, 1); | |
3751 | } | |
3752 | ||
c906108c SS |
3753 | /* Print a message describing any breakpoints set at PC. */ |
3754 | ||
3755 | static void | |
fba45db2 | 3756 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c | 3757 | { |
52f0bd74 AC |
3758 | int others = 0; |
3759 | struct breakpoint *b; | |
c906108c SS |
3760 | |
3761 | ALL_BREAKPOINTS (b) | |
5cab636d | 3762 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3763 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 | 3764 | others++; |
c906108c SS |
3765 | if (others > 0) |
3766 | { | |
3767 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3768 | ALL_BREAKPOINTS (b) | |
5cab636d | 3769 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3770 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 MS |
3771 | { |
3772 | others--; | |
3773 | printf_filtered ("%d%s%s ", | |
3774 | b->number, | |
3775 | ((b->enable_state == bp_disabled || | |
3776 | b->enable_state == bp_shlib_disabled || | |
3777 | b->enable_state == bp_call_disabled) | |
3778 | ? " (disabled)" | |
3779 | : b->enable_state == bp_permanent | |
3780 | ? " (permanent)" | |
3781 | : ""), | |
3782 | (others > 1) ? "," | |
3783 | : ((others == 1) ? " and" : "")); | |
3784 | } | |
c906108c SS |
3785 | printf_filtered ("also set at pc "); |
3786 | print_address_numeric (pc, 1, gdb_stdout); | |
3787 | printf_filtered (".\n"); | |
3788 | } | |
3789 | } | |
3790 | \f | |
3791 | /* Set the default place to put a breakpoint | |
3792 | for the `break' command with no arguments. */ | |
3793 | ||
3794 | void | |
fba45db2 KB |
3795 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3796 | int line) | |
c906108c SS |
3797 | { |
3798 | default_breakpoint_valid = valid; | |
3799 | default_breakpoint_address = addr; | |
3800 | default_breakpoint_symtab = symtab; | |
3801 | default_breakpoint_line = line; | |
3802 | } | |
3803 | ||
e4f237da KB |
3804 | /* Return true iff it is meaningful to use the address member of |
3805 | BPT. For some breakpoint types, the address member is irrelevant | |
3806 | and it makes no sense to attempt to compare it to other addresses | |
3807 | (or use it for any other purpose either). | |
3808 | ||
3809 | More specifically, each of the following breakpoint types will always | |
3810 | have a zero valued address and we don't want check_duplicates() to mark | |
3811 | breakpoints of any of these types to be a duplicate of an actual | |
3812 | breakpoint at address zero: | |
3813 | ||
3814 | bp_watchpoint | |
3815 | bp_hardware_watchpoint | |
3816 | bp_read_watchpoint | |
3817 | bp_access_watchpoint | |
3818 | bp_catch_exec | |
3819 | bp_longjmp_resume | |
3820 | bp_catch_fork | |
3821 | bp_catch_vork */ | |
3822 | ||
3823 | static int | |
3824 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3825 | { | |
3826 | enum bptype type = bpt->type; | |
3827 | ||
3828 | return (type != bp_watchpoint | |
3829 | && type != bp_hardware_watchpoint | |
3830 | && type != bp_read_watchpoint | |
3831 | && type != bp_access_watchpoint | |
3832 | && type != bp_catch_exec | |
3833 | && type != bp_longjmp_resume | |
3834 | && type != bp_catch_fork | |
3835 | && type != bp_catch_vfork); | |
3836 | } | |
3837 | ||
9f60f21b | 3838 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3839 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3840 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3841 | If we have a permanent breakpoint at the same place as BPT, make |
3842 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3843 | |
3844 | static void | |
9f60f21b | 3845 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3846 | { |
075f6582 | 3847 | struct bp_location *b; |
52f0bd74 | 3848 | int count = 0; |
075f6582 | 3849 | struct bp_location *perm_bp = 0; |
5cab636d | 3850 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 3851 | asection *section = bpt->loc->section; |
c906108c | 3852 | |
e4f237da | 3853 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3854 | return; |
3855 | ||
075f6582 DJ |
3856 | ALL_BP_LOCATIONS (b) |
3857 | if (b->owner->enable_state != bp_disabled | |
3858 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3859 | && !b->owner->pending |
075f6582 DJ |
3860 | && b->owner->enable_state != bp_call_disabled |
3861 | && b->address == address /* address / overlay match */ | |
3862 | && (!overlay_debugging || b->section == section) | |
3863 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3864 | { |
c2c6d25f | 3865 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3866 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3867 | { |
3868 | perm_bp = b; | |
3869 | break; | |
3870 | } | |
3871 | ||
c5aa993b | 3872 | count++; |
075f6582 | 3873 | b->duplicate = count > 1; |
c5aa993b | 3874 | } |
c2c6d25f JM |
3875 | |
3876 | /* If we found a permanent breakpoint at this address, go over the | |
3877 | list again and declare all the other breakpoints there to be the | |
3878 | duplicates. */ | |
3879 | if (perm_bp) | |
3880 | { | |
075f6582 | 3881 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3882 | |
3883 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3884 | if (! perm_bp->inserted) |
8e65ff28 AC |
3885 | internal_error (__FILE__, __LINE__, |
3886 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3887 | "actually inserted"); |
3888 | ||
075f6582 | 3889 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3890 | if (b != perm_bp) |
3891 | { | |
075f6582 DJ |
3892 | if (b->owner->enable_state != bp_disabled |
3893 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3894 | && !b->owner->pending |
075f6582 DJ |
3895 | && b->owner->enable_state != bp_call_disabled |
3896 | && b->address == address /* address / overlay match */ | |
3897 | && (!overlay_debugging || b->section == section) | |
3898 | && breakpoint_address_is_meaningful (b->owner)) | |
3899 | { | |
3900 | if (b->inserted) | |
3901 | internal_error (__FILE__, __LINE__, | |
3902 | "another breakpoint was inserted on top of " | |
3903 | "a permanent breakpoint"); | |
3904 | ||
3905 | b->duplicate = 1; | |
3906 | } | |
c2c6d25f JM |
3907 | } |
3908 | } | |
c906108c SS |
3909 | } |
3910 | ||
76897487 KB |
3911 | static void |
3912 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
3913 | int bnum, int have_bnum) | |
3914 | { | |
3915 | char astr1[40]; | |
3916 | char astr2[40]; | |
3917 | ||
3918 | strcpy (astr1, local_hex_string_custom ((unsigned long) from_addr, "08l")); | |
3919 | strcpy (astr2, local_hex_string_custom ((unsigned long) to_addr, "08l")); | |
3920 | if (have_bnum) | |
3921 | warning ("Breakpoint %d address previously adjusted from %s to %s.", | |
3922 | bnum, astr1, astr2); | |
3923 | else | |
3924 | warning ("Breakpoint address adjusted from %s to %s.", astr1, astr2); | |
3925 | } | |
3926 | ||
3927 | /* Adjust a breakpoint's address to account for architectural constraints | |
3928 | on breakpoint placement. Return the adjusted address. Note: Very | |
3929 | few targets require this kind of adjustment. For most targets, | |
3930 | this function is simply the identity function. */ | |
3931 | ||
3932 | static CORE_ADDR | |
88f7da05 | 3933 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
3934 | { |
3935 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
3936 | { | |
3937 | /* Very few targets need any kind of breakpoint adjustment. */ | |
3938 | return bpaddr; | |
3939 | } | |
88f7da05 KB |
3940 | else if (bptype == bp_watchpoint |
3941 | || bptype == bp_hardware_watchpoint | |
3942 | || bptype == bp_read_watchpoint | |
3943 | || bptype == bp_access_watchpoint | |
3944 | || bptype == bp_catch_fork | |
3945 | || bptype == bp_catch_vfork | |
3946 | || bptype == bp_catch_exec) | |
3947 | { | |
3948 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
3949 | have their addresses modified. */ | |
3950 | return bpaddr; | |
3951 | } | |
76897487 KB |
3952 | else |
3953 | { | |
3954 | CORE_ADDR adjusted_bpaddr; | |
3955 | ||
3956 | /* Some targets have architectural constraints on the placement | |
3957 | of breakpoint instructions. Obtain the adjusted address. */ | |
3958 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
3959 | bpaddr); | |
3960 | ||
3961 | /* An adjusted breakpoint address can significantly alter | |
3962 | a user's expectations. Print a warning if an adjustment | |
3963 | is required. */ | |
3964 | if (adjusted_bpaddr != bpaddr) | |
3965 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
3966 | ||
3967 | return adjusted_bpaddr; | |
3968 | } | |
3969 | } | |
3970 | ||
7cc221ef DJ |
3971 | /* Allocate a struct bp_location. */ |
3972 | ||
26bb91f3 | 3973 | static struct bp_location * |
e049a4b5 | 3974 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
3975 | { |
3976 | struct bp_location *loc, *loc_p; | |
3977 | ||
3978 | loc = xmalloc (sizeof (struct bp_location)); | |
3979 | memset (loc, 0, sizeof (*loc)); | |
3980 | ||
e049a4b5 DJ |
3981 | loc->owner = bpt; |
3982 | ||
3983 | switch (bp_type) | |
3984 | { | |
3985 | case bp_breakpoint: | |
3986 | case bp_until: | |
3987 | case bp_finish: | |
3988 | case bp_longjmp: | |
3989 | case bp_longjmp_resume: | |
3990 | case bp_step_resume: | |
3991 | case bp_through_sigtramp: | |
3992 | case bp_watchpoint_scope: | |
3993 | case bp_call_dummy: | |
3994 | case bp_shlib_event: | |
3995 | case bp_thread_event: | |
3996 | case bp_overlay_event: | |
3997 | case bp_catch_load: | |
3998 | case bp_catch_unload: | |
3999 | loc->loc_type = bp_loc_software_breakpoint; | |
4000 | break; | |
4001 | case bp_hardware_breakpoint: | |
4002 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4003 | break; | |
4004 | case bp_hardware_watchpoint: | |
4005 | case bp_read_watchpoint: | |
4006 | case bp_access_watchpoint: | |
4007 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4008 | break; | |
4009 | case bp_watchpoint: | |
4010 | case bp_catch_fork: | |
4011 | case bp_catch_vfork: | |
4012 | case bp_catch_exec: | |
4013 | case bp_catch_catch: | |
4014 | case bp_catch_throw: | |
4015 | loc->loc_type = bp_loc_other; | |
4016 | break; | |
4017 | default: | |
4018 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); | |
4019 | } | |
4020 | ||
7cc221ef DJ |
4021 | /* Add this breakpoint to the end of the chain. */ |
4022 | ||
4023 | loc_p = bp_location_chain; | |
4024 | if (loc_p == 0) | |
4025 | bp_location_chain = loc; | |
4026 | else | |
4027 | { | |
4028 | while (loc_p->next) | |
4029 | loc_p = loc_p->next; | |
4030 | loc_p->next = loc; | |
4031 | } | |
4032 | ||
4033 | return loc; | |
4034 | } | |
4035 | ||
4d28f7a8 KB |
4036 | /* set_raw_breakpoint() is a low level routine for allocating and |
4037 | partially initializing a breakpoint of type BPTYPE. The newly | |
4038 | created breakpoint's address, section, source file name, and line | |
4039 | number are provided by SAL. The newly created and partially | |
4040 | initialized breakpoint is added to the breakpoint chain and | |
4041 | is also returned as the value of this function. | |
c906108c | 4042 | |
4d28f7a8 KB |
4043 | It is expected that the caller will complete the initialization of |
4044 | the newly created breakpoint struct as well as output any status | |
4045 | information regarding the creation of a new breakpoint. In | |
4046 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4047 | number! Care should be taken to not allow an error() to occur | |
4048 | prior to completing the initialization of the breakpoint. If this | |
4049 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4050 | |
4051 | struct breakpoint * | |
4d28f7a8 | 4052 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4053 | { |
52f0bd74 | 4054 | struct breakpoint *b, *b1; |
c906108c SS |
4055 | |
4056 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4057 | memset (b, 0, sizeof (*b)); | |
e049a4b5 | 4058 | b->loc = allocate_bp_location (b, bptype); |
5cab636d | 4059 | b->loc->requested_address = sal.pc; |
88f7da05 KB |
4060 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4061 | bptype); | |
c906108c SS |
4062 | if (sal.symtab == NULL) |
4063 | b->source_file = NULL; | |
4064 | else | |
4065 | b->source_file = savestring (sal.symtab->filename, | |
4066 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4067 | b->loc->section = sal.section; |
4d28f7a8 | 4068 | b->type = bptype; |
c906108c SS |
4069 | b->language = current_language->la_language; |
4070 | b->input_radix = input_radix; | |
4071 | b->thread = -1; | |
4072 | b->line_number = sal.line; | |
b5de0fa7 | 4073 | b->enable_state = bp_enabled; |
c906108c SS |
4074 | b->next = 0; |
4075 | b->silent = 0; | |
4076 | b->ignore_count = 0; | |
4077 | b->commands = NULL; | |
818dd999 | 4078 | b->frame_id = null_frame_id; |
c906108c SS |
4079 | b->dll_pathname = NULL; |
4080 | b->triggered_dll_pathname = NULL; | |
4081 | b->forked_inferior_pid = 0; | |
4082 | b->exec_pathname = NULL; | |
3086aeae | 4083 | b->ops = NULL; |
0101ce28 | 4084 | b->pending = 0; |
c906108c SS |
4085 | |
4086 | /* Add this breakpoint to the end of the chain | |
4087 | so that a list of breakpoints will come out in order | |
4088 | of increasing numbers. */ | |
4089 | ||
4090 | b1 = breakpoint_chain; | |
4091 | if (b1 == 0) | |
4092 | breakpoint_chain = b; | |
4093 | else | |
4094 | { | |
4095 | while (b1->next) | |
4096 | b1 = b1->next; | |
4097 | b1->next = b; | |
4098 | } | |
4099 | ||
9f60f21b | 4100 | check_duplicates (b); |
c906108c SS |
4101 | breakpoints_changed (); |
4102 | ||
4103 | return b; | |
4104 | } | |
4105 | ||
c2c6d25f JM |
4106 | |
4107 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4108 | instruction, hard-wired into the inferior's code. */ | |
4109 | void | |
4110 | make_breakpoint_permanent (struct breakpoint *b) | |
4111 | { | |
b5de0fa7 | 4112 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4113 | |
4114 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4115 | b->loc->inserted = 1; |
c2c6d25f JM |
4116 | } |
4117 | ||
1900040c MS |
4118 | static struct breakpoint * |
4119 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4120 | { | |
4121 | static int internal_breakpoint_number = -1; | |
4122 | struct symtab_and_line sal; | |
4123 | struct breakpoint *b; | |
4124 | ||
fe39c653 | 4125 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4126 | |
4127 | sal.pc = address; | |
4128 | sal.section = find_pc_overlay (sal.pc); | |
4129 | ||
4130 | b = set_raw_breakpoint (sal, type); | |
4131 | b->number = internal_breakpoint_number--; | |
4132 | b->disposition = disp_donttouch; | |
4133 | ||
4134 | return b; | |
4135 | } | |
4136 | ||
c906108c SS |
4137 | |
4138 | static void | |
fba45db2 | 4139 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4140 | { |
c906108c | 4141 | struct breakpoint *b; |
1900040c | 4142 | struct minimal_symbol *m; |
c906108c | 4143 | |
1900040c MS |
4144 | if (func_name == NULL) |
4145 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4146 | else | |
c906108c | 4147 | { |
5520a790 | 4148 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4149 | return; |
1900040c MS |
4150 | |
4151 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4152 | } |
c906108c | 4153 | |
b5de0fa7 | 4154 | b->enable_state = bp_disabled; |
c906108c SS |
4155 | b->silent = 1; |
4156 | if (func_name) | |
4fcf66da | 4157 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4158 | } |
4159 | ||
53a5351d JM |
4160 | /* Call this routine when stepping and nexting to enable a breakpoint |
4161 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4162 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4163 | ||
4164 | void | |
fba45db2 | 4165 | enable_longjmp_breakpoint (void) |
c906108c | 4166 | { |
52f0bd74 | 4167 | struct breakpoint *b; |
c906108c SS |
4168 | |
4169 | ALL_BREAKPOINTS (b) | |
4170 | if (b->type == bp_longjmp) | |
c5aa993b | 4171 | { |
b5de0fa7 | 4172 | b->enable_state = bp_enabled; |
9f60f21b | 4173 | check_duplicates (b); |
c5aa993b | 4174 | } |
c906108c SS |
4175 | } |
4176 | ||
4177 | void | |
fba45db2 | 4178 | disable_longjmp_breakpoint (void) |
c906108c | 4179 | { |
52f0bd74 | 4180 | struct breakpoint *b; |
c906108c SS |
4181 | |
4182 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4183 | if (b->type == bp_longjmp |
c906108c | 4184 | || b->type == bp_longjmp_resume) |
c5aa993b | 4185 | { |
b5de0fa7 | 4186 | b->enable_state = bp_disabled; |
9f60f21b | 4187 | check_duplicates (b); |
c5aa993b | 4188 | } |
c906108c SS |
4189 | } |
4190 | ||
1900040c MS |
4191 | static void |
4192 | create_overlay_event_breakpoint (char *func_name) | |
4193 | { | |
4194 | struct breakpoint *b; | |
4195 | struct minimal_symbol *m; | |
4196 | ||
5520a790 | 4197 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4198 | return; |
4199 | ||
4200 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4201 | bp_overlay_event); | |
4202 | b->addr_string = xstrdup (func_name); | |
4203 | ||
4204 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4205 | { |
4206 | b->enable_state = bp_enabled; | |
4207 | overlay_events_enabled = 1; | |
4208 | } | |
1900040c | 4209 | else |
c02f5703 MS |
4210 | { |
4211 | b->enable_state = bp_disabled; | |
4212 | overlay_events_enabled = 0; | |
4213 | } | |
1900040c MS |
4214 | } |
4215 | ||
4216 | void | |
4217 | enable_overlay_breakpoints (void) | |
4218 | { | |
52f0bd74 | 4219 | struct breakpoint *b; |
1900040c MS |
4220 | |
4221 | ALL_BREAKPOINTS (b) | |
4222 | if (b->type == bp_overlay_event) | |
4223 | { | |
4224 | b->enable_state = bp_enabled; | |
4225 | check_duplicates (b); | |
c02f5703 | 4226 | overlay_events_enabled = 1; |
1900040c MS |
4227 | } |
4228 | } | |
4229 | ||
4230 | void | |
4231 | disable_overlay_breakpoints (void) | |
4232 | { | |
52f0bd74 | 4233 | struct breakpoint *b; |
1900040c MS |
4234 | |
4235 | ALL_BREAKPOINTS (b) | |
4236 | if (b->type == bp_overlay_event) | |
4237 | { | |
4238 | b->enable_state = bp_disabled; | |
4239 | check_duplicates (b); | |
c02f5703 | 4240 | overlay_events_enabled = 0; |
1900040c MS |
4241 | } |
4242 | } | |
4243 | ||
c4093a6a | 4244 | struct breakpoint * |
fba45db2 | 4245 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4246 | { |
4247 | struct breakpoint *b; | |
c4093a6a | 4248 | |
1900040c | 4249 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4250 | |
b5de0fa7 | 4251 | b->enable_state = bp_enabled; |
c4093a6a | 4252 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5cab636d | 4253 | xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4254 | |
4255 | return b; | |
4256 | } | |
4257 | ||
4258 | void | |
4259 | remove_thread_event_breakpoints (void) | |
4260 | { | |
4261 | struct breakpoint *b, *temp; | |
4262 | ||
4263 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4264 | if (b->type == bp_thread_event) | |
4265 | delete_breakpoint (b); | |
4266 | } | |
4267 | ||
0101ce28 JJ |
4268 | struct captured_parse_breakpoint_args |
4269 | { | |
4270 | char **arg_p; | |
4271 | struct symtabs_and_lines *sals_p; | |
4272 | char ***addr_string_p; | |
4273 | int *not_found_ptr; | |
4274 | }; | |
4275 | ||
4276 | struct lang_and_radix | |
4277 | { | |
4278 | enum language lang; | |
4279 | int radix; | |
4280 | }; | |
4281 | ||
4282 | /* Cleanup helper routine to restore the current language and | |
4283 | input radix. */ | |
4284 | static void | |
4285 | do_restore_lang_radix_cleanup (void *old) | |
4286 | { | |
4287 | struct lang_and_radix *p = old; | |
4288 | set_language (p->lang); | |
4289 | input_radix = p->radix; | |
4290 | } | |
4291 | ||
4292 | /* Try and resolve a pending breakpoint. */ | |
4293 | static int | |
4294 | resolve_pending_breakpoint (struct breakpoint *b) | |
4295 | { | |
4296 | /* Try and reparse the breakpoint in case the shared library | |
4297 | is now loaded. */ | |
4298 | struct symtabs_and_lines sals; | |
4299 | struct symtab_and_line pending_sal; | |
4300 | char **cond_string = (char **) NULL; | |
4301 | char *copy_arg = b->addr_string; | |
4302 | char **addr_string; | |
4303 | char *errmsg; | |
4304 | int rc; | |
4305 | int not_found = 0; | |
4306 | struct ui_file *old_gdb_stderr; | |
4307 | struct lang_and_radix old_lr; | |
4308 | struct cleanup *old_chain; | |
4309 | ||
4310 | /* Set language, input-radix, then reissue breakpoint command. | |
4311 | Ensure the language and input-radix are restored afterwards. */ | |
4312 | old_lr.lang = current_language->la_language; | |
4313 | old_lr.radix = input_radix; | |
4314 | old_chain = make_cleanup (do_restore_lang_radix_cleanup, &old_lr); | |
4315 | ||
4316 | set_language (b->language); | |
4317 | input_radix = b->input_radix; | |
4318 | rc = break_command_1 (b->addr_string, b->flag, b->from_tty, b); | |
4319 | ||
4320 | if (rc == GDB_RC_OK) | |
4321 | /* Pending breakpoint has been resolved. */ | |
4322 | printf_filtered ("Pending breakpoint \"%s\" resolved\n", b->addr_string); | |
4323 | ||
4324 | do_cleanups (old_chain); | |
4325 | return rc; | |
4326 | } | |
4327 | ||
cae688ec JJ |
4328 | #ifdef SOLIB_ADD |
4329 | void | |
4330 | remove_solib_event_breakpoints (void) | |
4331 | { | |
4332 | struct breakpoint *b, *temp; | |
4333 | ||
4334 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4335 | if (b->type == bp_shlib_event) | |
4336 | delete_breakpoint (b); | |
4337 | } | |
4338 | ||
4339 | struct breakpoint * | |
4340 | create_solib_event_breakpoint (CORE_ADDR address) | |
4341 | { | |
4342 | struct breakpoint *b; | |
4343 | ||
4344 | b = create_internal_breakpoint (address, bp_shlib_event); | |
4345 | return b; | |
4346 | } | |
4347 | ||
4348 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4349 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4350 | ||
4351 | void | |
4352 | disable_breakpoints_in_shlibs (int silent) | |
4353 | { | |
4354 | struct breakpoint *b; | |
4355 | int disabled_shlib_breaks = 0; | |
4356 | ||
4357 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4358 | ALL_BREAKPOINTS (b) | |
4359 | { | |
4360 | #if defined (PC_SOLIB) | |
4361 | if (((b->type == bp_breakpoint) || | |
4362 | (b->type == bp_hardware_breakpoint)) && | |
4363 | breakpoint_enabled (b) && | |
4364 | !b->loc->duplicate && | |
4365 | PC_SOLIB (b->loc->address)) | |
4366 | { | |
4367 | b->enable_state = bp_shlib_disabled; | |
4368 | if (!silent) | |
4369 | { | |
4370 | if (!disabled_shlib_breaks) | |
4371 | { | |
4372 | target_terminal_ours_for_output (); | |
4373 | warning ("Temporarily disabling shared library breakpoints:"); | |
4374 | } | |
4375 | disabled_shlib_breaks = 1; | |
4376 | warning ("breakpoint #%d ", b->number); | |
4377 | } | |
4378 | } | |
4379 | #endif | |
4380 | } | |
4381 | } | |
4382 | ||
c906108c SS |
4383 | /* Try to reenable any breakpoints in shared libraries. */ |
4384 | void | |
fba45db2 | 4385 | re_enable_breakpoints_in_shlibs (void) |
c906108c | 4386 | { |
0101ce28 | 4387 | struct breakpoint *b, *tmp; |
c906108c | 4388 | |
0101ce28 JJ |
4389 | ALL_BREAKPOINTS_SAFE (b, tmp) |
4390 | { | |
b5de0fa7 | 4391 | if (b->enable_state == bp_shlib_disabled) |
0101ce28 JJ |
4392 | { |
4393 | char buf[1], *lib; | |
4394 | ||
4395 | /* Do not reenable the breakpoint if the shared library | |
4396 | is still not mapped in. */ | |
4397 | lib = PC_SOLIB (b->loc->address); | |
4398 | if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0) | |
4399 | b->enable_state = bp_enabled; | |
4400 | } | |
4401 | else if (b->pending && (b->enable_state == bp_enabled)) | |
4402 | { | |
4403 | if (resolve_pending_breakpoint (b) == GDB_RC_OK) | |
4404 | delete_breakpoint (b); | |
4405 | } | |
4406 | } | |
c906108c SS |
4407 | } |
4408 | ||
4409 | #endif | |
4410 | ||
4411 | static void | |
fba45db2 KB |
4412 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4413 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4414 | { |
c5aa993b | 4415 | struct breakpoint *b; |
c906108c | 4416 | struct symtabs_and_lines sals; |
c5aa993b JM |
4417 | struct cleanup *old_chain; |
4418 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4419 | char *addr_start = hookname; |
4420 | char *addr_end = NULL; | |
4421 | char **canonical = (char **) NULL; | |
4422 | int thread = -1; /* All threads. */ | |
4423 | ||
c906108c | 4424 | /* Set a breakpoint on the specified hook. */ |
68219205 | 4425 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical, NULL); |
c906108c | 4426 | addr_end = hookname; |
c5aa993b | 4427 | |
c906108c SS |
4428 | if (sals.nelts == 0) |
4429 | { | |
4430 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4431 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4432 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4433 | return; | |
4434 | } | |
4435 | if (sals.nelts != 1) | |
4436 | { | |
53a5351d | 4437 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4438 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4439 | return; | |
4440 | } | |
4441 | ||
53a5351d JM |
4442 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4443 | in case the following errors out. */ | |
b8c9b27d | 4444 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4445 | if (canonical != (char **) NULL) |
c906108c | 4446 | { |
b8c9b27d | 4447 | make_cleanup (xfree, canonical); |
c906108c SS |
4448 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4449 | if (canonical[0] != NULL) | |
b8c9b27d | 4450 | make_cleanup (xfree, canonical[0]); |
c906108c | 4451 | } |
c5aa993b | 4452 | |
c906108c | 4453 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4454 | |
c906108c | 4455 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4456 | if (canonical != (char **) NULL) |
c906108c | 4457 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4458 | |
4d28f7a8 | 4459 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4460 | set_breakpoint_count (breakpoint_count + 1); |
4461 | b->number = breakpoint_count; | |
4462 | b->cond = NULL; | |
53a5351d JM |
4463 | b->cond_string = (cond_string == NULL) ? |
4464 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4465 | b->thread = thread; |
c5aa993b JM |
4466 | |
4467 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4468 | b->addr_string = canonical[0]; |
4469 | else if (addr_start) | |
4470 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4471 | |
b5de0fa7 EZ |
4472 | b->enable_state = bp_enabled; |
4473 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4474 | |
c906108c SS |
4475 | if (dll_pathname == NULL) |
4476 | b->dll_pathname = NULL; | |
4477 | else | |
4478 | { | |
4479 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4480 | strcpy (b->dll_pathname, dll_pathname); | |
4481 | } | |
c5aa993b | 4482 | |
c906108c SS |
4483 | mention (b); |
4484 | do_cleanups (old_chain); | |
4485 | } | |
4486 | ||
4487 | void | |
fba45db2 KB |
4488 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4489 | char *dll_pathname, char *cond_string) | |
c906108c | 4490 | { |
53a5351d JM |
4491 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4492 | cond_string, bp_catch_load); | |
c906108c SS |
4493 | } |
4494 | ||
4495 | void | |
fba45db2 KB |
4496 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4497 | char *dll_pathname, char *cond_string) | |
c906108c | 4498 | { |
53a5351d JM |
4499 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4500 | cond_string, bp_catch_unload); | |
c906108c SS |
4501 | } |
4502 | ||
4503 | static void | |
fba45db2 KB |
4504 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4505 | enum bptype bp_kind) | |
c906108c | 4506 | { |
c5aa993b JM |
4507 | struct symtab_and_line sal; |
4508 | struct breakpoint *b; | |
4509 | int thread = -1; /* All threads. */ | |
4510 | ||
fe39c653 | 4511 | init_sal (&sal); |
c906108c SS |
4512 | sal.pc = 0; |
4513 | sal.symtab = NULL; | |
4514 | sal.line = 0; | |
c5aa993b | 4515 | |
4d28f7a8 | 4516 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4517 | set_breakpoint_count (breakpoint_count + 1); |
4518 | b->number = breakpoint_count; | |
4519 | b->cond = NULL; | |
53a5351d JM |
4520 | b->cond_string = (cond_string == NULL) ? |
4521 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4522 | b->thread = thread; |
4523 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4524 | b->enable_state = bp_enabled; |
4525 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4526 | b->forked_inferior_pid = 0; |
c5aa993b | 4527 | |
c906108c SS |
4528 | mention (b); |
4529 | } | |
4530 | ||
4531 | void | |
fba45db2 | 4532 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4533 | { |
4534 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4535 | } | |
c5aa993b | 4536 | |
c906108c | 4537 | void |
fba45db2 | 4538 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4539 | { |
4540 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4541 | } | |
4542 | ||
4543 | void | |
fba45db2 | 4544 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4545 | { |
c5aa993b JM |
4546 | struct symtab_and_line sal; |
4547 | struct breakpoint *b; | |
4548 | int thread = -1; /* All threads. */ | |
c906108c | 4549 | |
fe39c653 | 4550 | init_sal (&sal); |
c906108c SS |
4551 | sal.pc = 0; |
4552 | sal.symtab = NULL; | |
4553 | sal.line = 0; | |
4554 | ||
4d28f7a8 | 4555 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4556 | set_breakpoint_count (breakpoint_count + 1); |
4557 | b->number = breakpoint_count; | |
4558 | b->cond = NULL; | |
53a5351d JM |
4559 | b->cond_string = (cond_string == NULL) ? |
4560 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4561 | b->thread = thread; |
4562 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4563 | b->enable_state = bp_enabled; |
4564 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4565 | |
c906108c SS |
4566 | mention (b); |
4567 | } | |
4568 | ||
4569 | static int | |
fba45db2 | 4570 | hw_breakpoint_used_count (void) |
c906108c | 4571 | { |
52f0bd74 | 4572 | struct breakpoint *b; |
c906108c SS |
4573 | int i = 0; |
4574 | ||
4575 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4576 | { |
b5de0fa7 | 4577 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4578 | i++; |
4579 | } | |
c906108c SS |
4580 | |
4581 | return i; | |
4582 | } | |
4583 | ||
4584 | static int | |
fba45db2 | 4585 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4586 | { |
52f0bd74 | 4587 | struct breakpoint *b; |
c906108c SS |
4588 | int i = 0; |
4589 | ||
4590 | *other_type_used = 0; | |
4591 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4592 | { |
468d015d | 4593 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4594 | { |
4595 | if (b->type == type) | |
4596 | i++; | |
4597 | else if ((b->type == bp_hardware_watchpoint || | |
4598 | b->type == bp_read_watchpoint || | |
468d015d | 4599 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4600 | *other_type_used = 1; |
4601 | } | |
4602 | } | |
c906108c SS |
4603 | return i; |
4604 | } | |
4605 | ||
53a5351d JM |
4606 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4607 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4608 | |
53a5351d JM |
4609 | FIXME - This ought to be done by setting a temporary breakpoint |
4610 | that gets deleted automatically... */ | |
c906108c SS |
4611 | |
4612 | void | |
818dd999 | 4613 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4614 | { |
52f0bd74 | 4615 | struct breakpoint *b; |
c906108c SS |
4616 | |
4617 | ALL_BREAKPOINTS (b) | |
4618 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4619 | { |
5cab636d | 4620 | b->loc->requested_address = pc; |
88f7da05 KB |
4621 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4622 | b->type); | |
b5de0fa7 | 4623 | b->enable_state = bp_enabled; |
818dd999 | 4624 | b->frame_id = frame_id; |
9f60f21b | 4625 | check_duplicates (b); |
c5aa993b JM |
4626 | return; |
4627 | } | |
c906108c SS |
4628 | } |
4629 | ||
4630 | void | |
fba45db2 | 4631 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4632 | { |
c5aa993b | 4633 | struct breakpoint *b; |
c906108c SS |
4634 | |
4635 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4636 | { |
4637 | if (((b->type == bp_watchpoint) | |
4638 | || (b->type == bp_hardware_watchpoint) | |
4639 | || (b->type == bp_read_watchpoint) | |
4640 | || (b->type == bp_access_watchpoint) | |
4641 | || ep_is_exception_catchpoint (b)) | |
468d015d | 4642 | && breakpoint_enabled (b)) |
c5aa993b | 4643 | { |
b5de0fa7 | 4644 | b->enable_state = bp_call_disabled; |
9f60f21b | 4645 | check_duplicates (b); |
c5aa993b JM |
4646 | } |
4647 | } | |
c906108c SS |
4648 | } |
4649 | ||
4650 | void | |
fba45db2 | 4651 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4652 | { |
c5aa993b | 4653 | struct breakpoint *b; |
c906108c SS |
4654 | |
4655 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4656 | { |
4657 | if (((b->type == bp_watchpoint) | |
4658 | || (b->type == bp_hardware_watchpoint) | |
4659 | || (b->type == bp_read_watchpoint) | |
4660 | || (b->type == bp_access_watchpoint) | |
4661 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4662 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4663 | { |
b5de0fa7 | 4664 | b->enable_state = bp_enabled; |
9f60f21b | 4665 | check_duplicates (b); |
c5aa993b JM |
4666 | } |
4667 | } | |
c906108c SS |
4668 | } |
4669 | ||
4670 | ||
4671 | /* Set a breakpoint that will evaporate an end of command | |
4672 | at address specified by SAL. | |
4673 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4674 | ||
4675 | struct breakpoint * | |
818dd999 | 4676 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4677 | enum bptype type) |
c906108c | 4678 | { |
52f0bd74 | 4679 | struct breakpoint *b; |
4d28f7a8 | 4680 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4681 | b->enable_state = bp_enabled; |
4682 | b->disposition = disp_donttouch; | |
818dd999 | 4683 | b->frame_id = frame_id; |
c906108c SS |
4684 | |
4685 | /* If we're debugging a multi-threaded program, then we | |
4686 | want momentary breakpoints to be active in only a | |
4687 | single thread of control. */ | |
39f77062 KB |
4688 | if (in_thread_list (inferior_ptid)) |
4689 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4690 | |
4691 | return b; | |
4692 | } | |
c906108c | 4693 | \f |
c5aa993b | 4694 | |
c906108c SS |
4695 | /* Tell the user we have just set a breakpoint B. */ |
4696 | ||
4697 | static void | |
fba45db2 | 4698 | mention (struct breakpoint *b) |
c906108c SS |
4699 | { |
4700 | int say_where = 0; | |
3b31d625 | 4701 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4702 | struct ui_stream *stb; |
4703 | ||
4704 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4705 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4706 | |
9a4105ab AC |
4707 | /* FIXME: This is misplaced; mention() is called by things (like |
4708 | hitting a watchpoint) other than breakpoint creation. It should | |
4709 | be possible to clean this up and at the same time replace the | |
4710 | random calls to breakpoint_changed with this hook, as has already | |
4711 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4712 | if (deprecated_create_breakpoint_hook) | |
4713 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4714 | breakpoint_create_event (b->number); |
c906108c | 4715 | |
3086aeae DJ |
4716 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4717 | b->ops->print_mention (b); | |
4718 | else | |
4719 | switch (b->type) | |
4720 | { | |
4721 | case bp_none: | |
4722 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4723 | break; | |
4724 | case bp_watchpoint: | |
4725 | ui_out_text (uiout, "Watchpoint "); | |
4726 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4727 | ui_out_field_int (uiout, "number", b->number); | |
4728 | ui_out_text (uiout, ": "); | |
4729 | print_expression (b->exp, stb->stream); | |
4730 | ui_out_field_stream (uiout, "exp", stb); | |
4731 | do_cleanups (ui_out_chain); | |
4732 | break; | |
4733 | case bp_hardware_watchpoint: | |
4734 | ui_out_text (uiout, "Hardware watchpoint "); | |
4735 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4736 | ui_out_field_int (uiout, "number", b->number); | |
4737 | ui_out_text (uiout, ": "); | |
4738 | print_expression (b->exp, stb->stream); | |
4739 | ui_out_field_stream (uiout, "exp", stb); | |
4740 | do_cleanups (ui_out_chain); | |
4741 | break; | |
4742 | case bp_read_watchpoint: | |
4743 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4744 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4745 | ui_out_field_int (uiout, "number", b->number); | |
4746 | ui_out_text (uiout, ": "); | |
4747 | print_expression (b->exp, stb->stream); | |
4748 | ui_out_field_stream (uiout, "exp", stb); | |
4749 | do_cleanups (ui_out_chain); | |
4750 | break; | |
4751 | case bp_access_watchpoint: | |
4752 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4753 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4754 | ui_out_field_int (uiout, "number", b->number); | |
4755 | ui_out_text (uiout, ": "); | |
4756 | print_expression (b->exp, stb->stream); | |
4757 | ui_out_field_stream (uiout, "exp", stb); | |
4758 | do_cleanups (ui_out_chain); | |
4759 | break; | |
4760 | case bp_breakpoint: | |
4761 | if (ui_out_is_mi_like_p (uiout)) | |
4762 | { | |
4763 | say_where = 0; | |
4764 | break; | |
4765 | } | |
4766 | printf_filtered ("Breakpoint %d", b->number); | |
4767 | say_where = 1; | |
4768 | break; | |
4769 | case bp_hardware_breakpoint: | |
4770 | if (ui_out_is_mi_like_p (uiout)) | |
4771 | { | |
4772 | say_where = 0; | |
4773 | break; | |
4774 | } | |
4775 | printf_filtered ("Hardware assisted breakpoint %d", b->number); | |
4776 | say_where = 1; | |
4777 | break; | |
4778 | case bp_catch_load: | |
4779 | case bp_catch_unload: | |
4780 | printf_filtered ("Catchpoint %d (%s %s)", | |
4781 | b->number, | |
4782 | (b->type == bp_catch_load) ? "load" : "unload", | |
4783 | (b->dll_pathname != NULL) ? | |
4784 | b->dll_pathname : "<any library>"); | |
4785 | break; | |
4786 | case bp_catch_fork: | |
4787 | case bp_catch_vfork: | |
4788 | printf_filtered ("Catchpoint %d (%s)", | |
4789 | b->number, | |
4790 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4791 | break; | |
4792 | case bp_catch_exec: | |
4793 | printf_filtered ("Catchpoint %d (exec)", | |
4794 | b->number); | |
4795 | break; | |
4796 | case bp_catch_catch: | |
4797 | case bp_catch_throw: | |
4798 | printf_filtered ("Catchpoint %d (%s)", | |
4799 | b->number, | |
4800 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
4801 | break; | |
4802 | ||
4803 | case bp_until: | |
4804 | case bp_finish: | |
4805 | case bp_longjmp: | |
4806 | case bp_longjmp_resume: | |
4807 | case bp_step_resume: | |
4808 | case bp_through_sigtramp: | |
4809 | case bp_call_dummy: | |
4810 | case bp_watchpoint_scope: | |
4811 | case bp_shlib_event: | |
4812 | case bp_thread_event: | |
4813 | case bp_overlay_event: | |
4814 | break; | |
4815 | } | |
c906108c | 4816 | |
c906108c SS |
4817 | if (say_where) |
4818 | { | |
0101ce28 | 4819 | if (b->pending) |
c906108c | 4820 | { |
0101ce28 JJ |
4821 | printf_filtered (" (%s) pending.", b->addr_string); |
4822 | } | |
4823 | else | |
4824 | { | |
4825 | if (addressprint || b->source_file == NULL) | |
4826 | { | |
4827 | printf_filtered (" at "); | |
4828 | print_address_numeric (b->loc->address, 1, gdb_stdout); | |
4829 | } | |
4830 | if (b->source_file) | |
4831 | printf_filtered (": file %s, line %d.", | |
4832 | b->source_file, b->line_number); | |
c906108c | 4833 | } |
c906108c | 4834 | } |
8b93c638 | 4835 | do_cleanups (old_chain); |
9dc5e2a9 | 4836 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4837 | return; |
c906108c SS |
4838 | printf_filtered ("\n"); |
4839 | } | |
c906108c | 4840 | \f |
c5aa993b | 4841 | |
c3f6f71d JM |
4842 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4843 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4844 | COND[i] and COND_STRING[i] values. | |
4845 | ||
0101ce28 JJ |
4846 | The parameter PENDING_BP points to a pending breakpoint that is |
4847 | the basis of the breakpoints currently being created. The pending | |
4848 | breakpoint may contain a separate condition string or commands | |
4849 | that were added after the initial pending breakpoint was created. | |
4850 | ||
c3f6f71d JM |
4851 | NOTE: If the function succeeds, the caller is expected to cleanup |
4852 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4853 | array contents). If the function fails (error() is called), the | |
4854 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4855 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4856 | |
4857 | static void | |
c3f6f71d JM |
4858 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4859 | struct expression **cond, char **cond_string, | |
4860 | enum bptype type, enum bpdisp disposition, | |
0101ce28 JJ |
4861 | int thread, int ignore_count, int from_tty, |
4862 | struct breakpoint *pending_bp) | |
c906108c | 4863 | { |
c3f6f71d JM |
4864 | if (type == bp_hardware_breakpoint) |
4865 | { | |
4866 | int i = hw_breakpoint_used_count (); | |
4867 | int target_resources_ok = | |
4868 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4869 | i + sals.nelts, 0); | |
4870 | if (target_resources_ok == 0) | |
4871 | error ("No hardware breakpoint support in the target."); | |
4872 | else if (target_resources_ok < 0) | |
4873 | error ("Hardware breakpoints used exceeds limit."); | |
4874 | } | |
c906108c | 4875 | |
c3f6f71d JM |
4876 | /* Now set all the breakpoints. */ |
4877 | { | |
4878 | int i; | |
4879 | for (i = 0; i < sals.nelts; i++) | |
4880 | { | |
4881 | struct breakpoint *b; | |
4882 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4883 | |
c3f6f71d JM |
4884 | if (from_tty) |
4885 | describe_other_breakpoints (sal.pc, sal.section); | |
4886 | ||
4d28f7a8 | 4887 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4888 | set_breakpoint_count (breakpoint_count + 1); |
4889 | b->number = breakpoint_count; | |
c3f6f71d JM |
4890 | b->cond = cond[i]; |
4891 | b->thread = thread; | |
d8ef46f5 DJ |
4892 | if (addr_string[i]) |
4893 | b->addr_string = addr_string[i]; | |
4894 | else | |
4895 | /* addr_string has to be used or breakpoint_re_set will delete | |
4896 | me. */ | |
5cab636d | 4897 | xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address)); |
c3f6f71d JM |
4898 | b->cond_string = cond_string[i]; |
4899 | b->ignore_count = ignore_count; | |
b5de0fa7 | 4900 | b->enable_state = bp_enabled; |
c3f6f71d | 4901 | b->disposition = disposition; |
0101ce28 JJ |
4902 | /* If resolving a pending breakpoint, a check must be made to see if |
4903 | the user has specified a new condition or commands for the | |
4904 | breakpoint. A new condition will override any condition that was | |
4905 | initially specified with the initial breakpoint command. */ | |
4906 | if (pending_bp) | |
4907 | { | |
4908 | char *arg; | |
4909 | if (pending_bp->cond_string) | |
4910 | { | |
4911 | arg = pending_bp->cond_string; | |
4912 | b->cond_string = savestring (arg, strlen (arg)); | |
4913 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
4914 | if (*arg) | |
4915 | error ("Junk at end of pending breakpoint condition expression"); | |
4916 | } | |
4917 | /* If there are commands associated with the breakpoint, they should | |
4918 | be copied too. */ | |
4919 | if (pending_bp->commands) | |
4920 | b->commands = copy_command_lines (pending_bp->commands); | |
0a5e7efe JI |
4921 | |
4922 | /* We have to copy over the ignore_count and thread as well. */ | |
4923 | b->ignore_count = pending_bp->ignore_count; | |
4924 | b->thread = pending_bp->thread; | |
0101ce28 | 4925 | } |
c3f6f71d JM |
4926 | mention (b); |
4927 | } | |
4928 | } | |
4929 | } | |
c906108c | 4930 | |
c3f6f71d JM |
4931 | /* Parse ARG which is assumed to be a SAL specification possibly |
4932 | followed by conditionals. On return, SALS contains an array of SAL | |
4933 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4934 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4935 | |
b9362cc7 | 4936 | static void |
c3f6f71d JM |
4937 | parse_breakpoint_sals (char **address, |
4938 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
4939 | char ***addr_string, |
4940 | int *not_found_ptr) | |
c3f6f71d JM |
4941 | { |
4942 | char *addr_start = *address; | |
4943 | *addr_string = NULL; | |
4944 | /* If no arg given, or if first arg is 'if ', use the default | |
4945 | breakpoint. */ | |
4946 | if ((*address) == NULL | |
4947 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4948 | { |
4949 | if (default_breakpoint_valid) | |
4950 | { | |
c3f6f71d | 4951 | struct symtab_and_line sal; |
fe39c653 | 4952 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 4953 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
4954 | xmalloc (sizeof (struct symtab_and_line)); |
4955 | sal.pc = default_breakpoint_address; | |
4956 | sal.line = default_breakpoint_line; | |
4957 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4958 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4959 | sals->sals[0] = sal; |
4960 | sals->nelts = 1; | |
c906108c SS |
4961 | } |
4962 | else | |
4963 | error ("No default breakpoint address now."); | |
4964 | } | |
4965 | else | |
4966 | { | |
c906108c | 4967 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4968 | current_source_symtab (which is decode_line_1's default). This |
4969 | should produce the results we want almost all of the time while | |
1aeae86e AF |
4970 | leaving default_breakpoint_* alone. |
4971 | ObjC: However, don't match an Objective-C method name which | |
4972 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 4973 | |
c214a6fd | 4974 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 4975 | |
c906108c | 4976 | if (default_breakpoint_valid |
0378c332 | 4977 | && (!cursal.symtab |
1aeae86e AF |
4978 | || ((strchr ("+-", (*address)[0]) != NULL) |
4979 | && ((*address)[1] != '[')))) | |
c3f6f71d | 4980 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
4981 | default_breakpoint_line, addr_string, |
4982 | not_found_ptr); | |
c906108c | 4983 | else |
0101ce28 JJ |
4984 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
4985 | addr_string, not_found_ptr); | |
c906108c | 4986 | } |
c3f6f71d JM |
4987 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4988 | if (sals->nelts > 0 && *addr_string == NULL) | |
4989 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4990 | if (addr_start != (*address)) | |
c906108c | 4991 | { |
c3f6f71d JM |
4992 | int i; |
4993 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4994 | { |
c3f6f71d JM |
4995 | /* Add the string if not present. */ |
4996 | if ((*addr_string)[i] == NULL) | |
4997 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4998 | } |
4999 | } | |
c3f6f71d | 5000 | } |
c906108c | 5001 | |
c906108c | 5002 | |
c3f6f71d JM |
5003 | /* Convert each SAL into a real PC. Verify that the PC can be |
5004 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5005 | |
b9362cc7 | 5006 | static void |
c3f6f71d JM |
5007 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5008 | char *address) | |
5009 | { | |
5010 | int i; | |
5011 | for (i = 0; i < sals->nelts; i++) | |
5012 | { | |
5013 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
5014 | |
5015 | /* It's possible for the PC to be nonzero, but still an illegal | |
5016 | value on some targets. | |
5017 | ||
5018 | For example, on HP-UX if you start gdb, and before running the | |
5019 | inferior you try to set a breakpoint on a shared library function | |
5020 | "foo" where the inferior doesn't call "foo" directly but does | |
5021 | pass its address to another function call, then we do find a | |
5022 | minimal symbol for the "foo", but it's address is invalid. | |
5023 | (Appears to be an index into a table that the loader sets up | |
5024 | when the inferior is run.) | |
5025 | ||
5026 | Give the target a chance to bless sals.sals[i].pc before we | |
5027 | try to make a breakpoint for it. */ | |
c3f6f71d | 5028 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 5029 | { |
c3f6f71d JM |
5030 | if (address == NULL) |
5031 | error ("Cannot break without a running program."); | |
5032 | else | |
5033 | error ("Cannot break on %s without a running program.", | |
5034 | address); | |
c5aa993b | 5035 | } |
c3f6f71d JM |
5036 | } |
5037 | } | |
5038 | ||
0101ce28 JJ |
5039 | static int |
5040 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) | |
5041 | { | |
5042 | struct captured_parse_breakpoint_args *args = data; | |
5043 | ||
5044 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5045 | args->not_found_ptr); | |
5046 | ||
5047 | return GDB_RC_OK; | |
5048 | } | |
5049 | ||
c3f6f71d JM |
5050 | /* Set a breakpoint according to ARG (function, linenum or *address) |
5051 | flag: first bit : 0 non-temporary, 1 temporary. | |
0101ce28 | 5052 | second bit : 0 normal breakpoint, 1 hardware breakpoint. |
c5aa993b | 5053 | |
0101ce28 JJ |
5054 | PENDING_BP is non-NULL when this function is being called to resolve |
5055 | a pending breakpoint. */ | |
5056 | ||
5057 | static int | |
5058 | break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp) | |
c3f6f71d JM |
5059 | { |
5060 | int tempflag, hardwareflag; | |
5061 | struct symtabs_and_lines sals; | |
52f0bd74 | 5062 | struct expression **cond = 0; |
0101ce28 | 5063 | struct symtab_and_line pending_sal; |
c3f6f71d | 5064 | char **cond_string = (char **) NULL; |
0101ce28 JJ |
5065 | char *copy_arg; |
5066 | char *err_msg; | |
c3f6f71d JM |
5067 | char *addr_start = arg; |
5068 | char **addr_string; | |
5069 | struct cleanup *old_chain; | |
5070 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 JJ |
5071 | struct captured_parse_breakpoint_args parse_args; |
5072 | int i, rc; | |
5073 | int pending = 0; | |
c3f6f71d JM |
5074 | int thread = -1; |
5075 | int ignore_count = 0; | |
0101ce28 | 5076 | int not_found = 0; |
c3f6f71d JM |
5077 | |
5078 | hardwareflag = flag & BP_HARDWAREFLAG; | |
5079 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 5080 | |
c3f6f71d JM |
5081 | sals.sals = NULL; |
5082 | sals.nelts = 0; | |
5083 | addr_string = NULL; | |
c3f6f71d | 5084 | |
0101ce28 JJ |
5085 | parse_args.arg_p = &arg; |
5086 | parse_args.sals_p = &sals; | |
5087 | parse_args.addr_string_p = &addr_string; | |
5088 | parse_args.not_found_ptr = ¬_found; | |
5089 | ||
5090 | rc = catch_exceptions_with_msg (uiout, do_captured_parse_breakpoint, | |
5091 | &parse_args, NULL, &err_msg, | |
5092 | RETURN_MASK_ALL); | |
5093 | ||
5094 | /* If caller is interested in rc value from parse, set value. */ | |
5095 | ||
5096 | if (rc != GDB_RC_OK) | |
5097 | { | |
5098 | /* Check for file or function not found. */ | |
5099 | if (not_found) | |
5100 | { | |
5101 | /* If called to resolve pending breakpoint, just return error code. */ | |
5102 | if (pending_bp) | |
5103 | return rc; | |
5104 | ||
5105 | error_output_message (NULL, err_msg); | |
5106 | xfree (err_msg); | |
fa8d40ab JJ |
5107 | |
5108 | /* If pending breakpoint support is turned off, throw error. */ | |
5109 | ||
5110 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
5111 | throw_exception (RETURN_ERROR); | |
5112 | ||
5113 | /* If pending breakpoint support is auto query and the user selects | |
5114 | no, then simply return the error code. */ | |
5115 | if (pending_break_support == AUTO_BOOLEAN_AUTO && | |
5116 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
0101ce28 | 5117 | return rc; |
fa8d40ab JJ |
5118 | |
5119 | /* At this point, either the user was queried about setting a | |
5120 | pending breakpoint and selected yes, or pending breakpoint | |
5121 | behavior is on and thus a pending breakpoint is defaulted | |
5122 | on behalf of the user. */ | |
0101ce28 JJ |
5123 | copy_arg = xstrdup (addr_start); |
5124 | addr_string = ©_arg; | |
5125 | sals.nelts = 1; | |
5126 | sals.sals = &pending_sal; | |
5127 | pending_sal.pc = 0; | |
5128 | pending = 1; | |
5129 | } | |
5130 | else | |
5131 | return rc; | |
5132 | } | |
5133 | else if (!sals.nelts) | |
5134 | return GDB_RC_FAIL; | |
c3f6f71d JM |
5135 | |
5136 | /* Create a chain of things that always need to be cleaned up. */ | |
5137 | old_chain = make_cleanup (null_cleanup, 0); | |
5138 | ||
0101ce28 JJ |
5139 | if (!pending) |
5140 | { | |
5141 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5142 | make_cleanup (xfree, sals.sals); | |
5143 | ||
5144 | /* Cleanup the addr_string array but not its contents. */ | |
5145 | make_cleanup (xfree, addr_string); | |
5146 | } | |
c3f6f71d JM |
5147 | |
5148 | /* Allocate space for all the cond expressions. */ | |
5149 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5150 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5151 | |
5152 | /* Allocate space for all the cond strings. */ | |
5153 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5154 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5155 | |
5156 | /* ----------------------------- SNIP ----------------------------- | |
5157 | Anything added to the cleanup chain beyond this point is assumed | |
5158 | to be part of a breakpoint. If the breakpoint create succeeds | |
5159 | then the memory is not reclaimed. */ | |
5160 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5161 | ||
5162 | /* Mark the contents of the addr_string for cleanup. These go on | |
5163 | the breakpoint_chain and only occure if the breakpoint create | |
5164 | fails. */ | |
5165 | for (i = 0; i < sals.nelts; i++) | |
5166 | { | |
5167 | if (addr_string[i] != NULL) | |
b8c9b27d | 5168 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5169 | } |
5170 | ||
5171 | /* Resolve all line numbers to PC's and verify that the addresses | |
5172 | are ok for the target. */ | |
0101ce28 JJ |
5173 | if (!pending) |
5174 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5175 | |
5176 | /* Verify that condition can be parsed, before setting any | |
5177 | breakpoints. Allocate a separate condition expression for each | |
5178 | breakpoint. */ | |
5179 | thread = -1; /* No specific thread yet */ | |
0101ce28 | 5180 | if (!pending) |
c3f6f71d | 5181 | { |
0101ce28 | 5182 | for (i = 0; i < sals.nelts; i++) |
c906108c | 5183 | { |
0101ce28 JJ |
5184 | char *tok = arg; |
5185 | while (tok && *tok) | |
c906108c | 5186 | { |
0101ce28 JJ |
5187 | char *end_tok; |
5188 | int toklen; | |
5189 | char *cond_start = NULL; | |
5190 | char *cond_end = NULL; | |
5191 | while (*tok == ' ' || *tok == '\t') | |
5192 | tok++; | |
5193 | ||
5194 | end_tok = tok; | |
5195 | ||
5196 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5197 | end_tok++; | |
5198 | ||
5199 | toklen = end_tok - tok; | |
5200 | ||
5201 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5202 | { | |
5203 | tok = cond_start = end_tok + 1; | |
5204 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), | |
5205 | 0); | |
5206 | make_cleanup (xfree, cond[i]); | |
5207 | cond_end = tok; | |
5208 | cond_string[i] = savestring (cond_start, | |
5209 | cond_end - cond_start); | |
5210 | make_cleanup (xfree, cond_string[i]); | |
5211 | } | |
5212 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5213 | { | |
5214 | char *tmptok; | |
5215 | ||
5216 | tok = end_tok + 1; | |
5217 | tmptok = tok; | |
5218 | thread = strtol (tok, &tok, 0); | |
5219 | if (tok == tmptok) | |
5220 | error ("Junk after thread keyword."); | |
5221 | if (!valid_thread_id (thread)) | |
5222 | error ("Unknown thread %d\n", thread); | |
5223 | } | |
5224 | else | |
5225 | error ("Junk at end of arguments."); | |
c906108c | 5226 | } |
c906108c | 5227 | } |
0101ce28 JJ |
5228 | create_breakpoints (sals, addr_string, cond, cond_string, |
5229 | hardwareflag ? bp_hardware_breakpoint | |
5230 | : bp_breakpoint, | |
5231 | tempflag ? disp_del : disp_donttouch, | |
5232 | thread, ignore_count, from_tty, | |
5233 | pending_bp); | |
c906108c | 5234 | } |
0101ce28 JJ |
5235 | else |
5236 | { | |
5237 | struct symtab_and_line sal; | |
5238 | struct breakpoint *b; | |
5239 | ||
5240 | sal.symtab = NULL; | |
5241 | sal.pc = 0; | |
5242 | ||
5243 | make_cleanup (xfree, copy_arg); | |
5244 | ||
5245 | b = set_raw_breakpoint (sal, hardwareflag ? bp_hardware_breakpoint | |
5246 | : bp_breakpoint); | |
5247 | set_breakpoint_count (breakpoint_count + 1); | |
5248 | b->number = breakpoint_count; | |
5249 | b->cond = *cond; | |
5250 | b->thread = thread; | |
5251 | b->addr_string = *addr_string; | |
5252 | b->cond_string = *cond_string; | |
5253 | b->ignore_count = ignore_count; | |
5254 | b->pending = 1; | |
5255 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
5256 | b->from_tty = from_tty; | |
5257 | b->flag = flag; | |
5258 | mention (b); | |
5259 | } | |
5260 | ||
c3f6f71d JM |
5261 | if (sals.nelts > 1) |
5262 | { | |
5263 | warning ("Multiple breakpoints were set."); | |
5264 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5265 | } |
c3f6f71d JM |
5266 | /* That's it. Discard the cleanups for data inserted into the |
5267 | breakpoint. */ | |
5268 | discard_cleanups (breakpoint_chain); | |
5269 | /* But cleanup everything else. */ | |
5270 | do_cleanups (old_chain); | |
0101ce28 JJ |
5271 | |
5272 | return GDB_RC_OK; | |
c3f6f71d | 5273 | } |
c906108c | 5274 | |
c3f6f71d JM |
5275 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5276 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5277 | |
c3f6f71d JM |
5278 | struct captured_breakpoint_args |
5279 | { | |
5280 | char *address; | |
5281 | char *condition; | |
5282 | int hardwareflag; | |
5283 | int tempflag; | |
5284 | int thread; | |
5285 | int ignore_count; | |
5286 | }; | |
5287 | ||
5288 | static int | |
5289 | do_captured_breakpoint (void *data) | |
5290 | { | |
5291 | struct captured_breakpoint_args *args = data; | |
5292 | struct symtabs_and_lines sals; | |
52f0bd74 | 5293 | struct expression **cond; |
c3f6f71d JM |
5294 | struct cleanup *old_chain; |
5295 | struct cleanup *breakpoint_chain = NULL; | |
5296 | int i; | |
5297 | char **addr_string; | |
5298 | char **cond_string; | |
5299 | ||
5300 | char *address_end; | |
5301 | ||
5302 | /* Parse the source and lines spec. Delay check that the expression | |
5303 | didn't contain trailing garbage until after cleanups are in | |
5304 | place. */ | |
5305 | sals.sals = NULL; | |
5306 | sals.nelts = 0; | |
5307 | address_end = args->address; | |
5308 | addr_string = NULL; | |
0101ce28 | 5309 | parse_breakpoint_sals (&address_end, &sals, &addr_string, 0); |
c3f6f71d JM |
5310 | |
5311 | if (!sals.nelts) | |
5312 | return GDB_RC_NONE; | |
5313 | ||
5314 | /* Create a chain of things at always need to be cleaned up. */ | |
5315 | old_chain = make_cleanup (null_cleanup, 0); | |
5316 | ||
5317 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5318 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5319 | |
5320 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5321 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5322 | |
5323 | /* Allocate space for all the cond expressions. */ | |
5324 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5325 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5326 | |
5327 | /* Allocate space for all the cond strings. */ | |
5328 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5329 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5330 | |
5331 | /* ----------------------------- SNIP ----------------------------- | |
5332 | Anything added to the cleanup chain beyond this point is assumed | |
5333 | to be part of a breakpoint. If the breakpoint create goes | |
5334 | through then that memory is not cleaned up. */ | |
5335 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5336 | ||
5337 | /* Mark the contents of the addr_string for cleanup. These go on | |
5338 | the breakpoint_chain and only occure if the breakpoint create | |
5339 | fails. */ | |
c906108c SS |
5340 | for (i = 0; i < sals.nelts; i++) |
5341 | { | |
c3f6f71d | 5342 | if (addr_string[i] != NULL) |
b8c9b27d | 5343 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5344 | } |
5345 | ||
c3f6f71d JM |
5346 | /* Wait until now before checking for garbage at the end of the |
5347 | address. That way cleanups can take care of freeing any | |
5348 | memory. */ | |
5349 | if (*address_end != '\0') | |
5350 | error ("Garbage %s following breakpoint address", address_end); | |
5351 | ||
5352 | /* Resolve all line numbers to PC's. */ | |
5353 | breakpoint_sals_to_pc (&sals, args->address); | |
5354 | ||
5355 | /* Verify that conditions can be parsed, before setting any | |
5356 | breakpoints. */ | |
5357 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5358 | { |
c3f6f71d JM |
5359 | if (args->condition != NULL) |
5360 | { | |
5361 | char *tok = args->condition; | |
5362 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5363 | if (*tok != '\0') | |
5364 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 5365 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5366 | cond_string[i] = xstrdup (args->condition); |
5367 | } | |
c906108c | 5368 | } |
c3f6f71d JM |
5369 | |
5370 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5371 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5372 | args->tempflag ? disp_del : disp_donttouch, |
0101ce28 JJ |
5373 | args->thread, args->ignore_count, 0/*from-tty*/, |
5374 | NULL/*pending_bp*/); | |
c3f6f71d JM |
5375 | |
5376 | /* That's it. Discard the cleanups for data inserted into the | |
5377 | breakpoint. */ | |
5378 | discard_cleanups (breakpoint_chain); | |
5379 | /* But cleanup everything else. */ | |
c906108c | 5380 | do_cleanups (old_chain); |
c3f6f71d | 5381 | return GDB_RC_OK; |
c906108c SS |
5382 | } |
5383 | ||
c3f6f71d JM |
5384 | enum gdb_rc |
5385 | gdb_breakpoint (char *address, char *condition, | |
5386 | int hardwareflag, int tempflag, | |
5387 | int thread, int ignore_count) | |
5388 | { | |
5389 | struct captured_breakpoint_args args; | |
5390 | args.address = address; | |
5391 | args.condition = condition; | |
5392 | args.hardwareflag = hardwareflag; | |
5393 | args.tempflag = tempflag; | |
5394 | args.thread = thread; | |
5395 | args.ignore_count = ignore_count; | |
5396 | return catch_errors (do_captured_breakpoint, &args, | |
5397 | NULL, RETURN_MASK_ALL); | |
5398 | } | |
5399 | ||
5400 | ||
c906108c | 5401 | static void |
fba45db2 | 5402 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5403 | { |
5404 | struct frame_info *frame; | |
5405 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
5406 | char *extra_args = NULL; |
5407 | char *level_arg; | |
c906108c SS |
5408 | int extra_args_len = 0, if_arg = 0; |
5409 | ||
5410 | if (!arg || | |
5411 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5412 | { | |
5413 | ||
5414 | if (default_breakpoint_valid) | |
5415 | { | |
6e7f8b9c | 5416 | if (deprecated_selected_frame) |
c906108c | 5417 | { |
bdd78e62 | 5418 | selected_pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
5419 | if (arg) |
5420 | if_arg = 1; | |
5421 | } | |
5422 | else | |
5423 | error ("No selected frame."); | |
5424 | } | |
5425 | else | |
5426 | error ("No default breakpoint address now."); | |
5427 | } | |
5428 | else | |
5429 | { | |
5430 | extra_args = strchr (arg, ' '); | |
5431 | if (extra_args) | |
5432 | { | |
5433 | extra_args++; | |
5434 | extra_args_len = strlen (extra_args); | |
5435 | level_arg = (char *) xmalloc (extra_args - arg); | |
5436 | strncpy (level_arg, arg, extra_args - arg - 1); | |
5437 | level_arg[extra_args - arg - 1] = '\0'; | |
5438 | } | |
5439 | else | |
5440 | { | |
5441 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
5442 | strcpy (level_arg, arg); | |
5443 | } | |
5444 | ||
5445 | frame = parse_frame_specification (level_arg); | |
5446 | if (frame) | |
bdd78e62 | 5447 | selected_pc = get_frame_pc (frame); |
c906108c SS |
5448 | else |
5449 | selected_pc = 0; | |
5450 | } | |
5451 | if (if_arg) | |
5452 | { | |
5453 | extra_args = arg; | |
c5aa993b | 5454 | extra_args_len = strlen (arg); |
c906108c SS |
5455 | } |
5456 | ||
5457 | if (selected_pc) | |
5458 | { | |
c5aa993b | 5459 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c | 5460 | { |
9ebf4acf | 5461 | char *addr_string; |
c906108c | 5462 | if (extra_args_len) |
9ebf4acf | 5463 | addr_string = xstrprintf ("*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5464 | else |
9ebf4acf | 5465 | addr_string = xstrprintf ("*0x%s", paddr_nz (high)); |
0101ce28 | 5466 | break_command_1 (addr_string, flag, from_tty, NULL); |
b8c9b27d | 5467 | xfree (addr_string); |
c906108c SS |
5468 | } |
5469 | else | |
5470 | error ("No function contains the specified address"); | |
5471 | } | |
5472 | else | |
5473 | error ("Unable to set breakpoint at procedure exit"); | |
5474 | } | |
5475 | ||
5476 | ||
5477 | static void | |
fba45db2 | 5478 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5479 | { |
5480 | char *addr_string, *break_string, *beg_addr_string; | |
5481 | CORE_ADDR low, high; | |
5482 | struct symtabs_and_lines sals; | |
5483 | struct symtab_and_line sal; | |
5484 | struct cleanup *old_chain; | |
7f7e9482 | 5485 | char *extra_args = NULL; |
c906108c SS |
5486 | int extra_args_len = 0; |
5487 | int i, if_arg = 0; | |
5488 | ||
5489 | if (!arg || | |
5490 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5491 | { | |
5492 | if (default_breakpoint_valid) | |
5493 | { | |
6e7f8b9c | 5494 | if (deprecated_selected_frame) |
c906108c | 5495 | { |
9ebf4acf AC |
5496 | addr_string = xstrprintf ("*0x%s", |
5497 | paddr_nz (get_frame_pc (deprecated_selected_frame))); | |
c906108c SS |
5498 | if (arg) |
5499 | if_arg = 1; | |
5500 | } | |
5501 | else | |
5502 | error ("No selected frame."); | |
5503 | } | |
5504 | else | |
5505 | error ("No default breakpoint address now."); | |
5506 | } | |
5507 | else | |
5508 | { | |
5509 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5510 | strcpy (addr_string, arg); | |
5511 | } | |
5512 | ||
5513 | if (if_arg) | |
5514 | { | |
5515 | extra_args = arg; | |
c5aa993b JM |
5516 | extra_args_len = strlen (arg); |
5517 | } | |
5518 | else if (arg) | |
5519 | { | |
5520 | /* get the stuff after the function name or address */ | |
5521 | extra_args = strchr (arg, ' '); | |
5522 | if (extra_args) | |
5523 | { | |
5524 | extra_args++; | |
5525 | extra_args_len = strlen (extra_args); | |
5526 | } | |
c906108c | 5527 | } |
c906108c SS |
5528 | |
5529 | sals.sals = NULL; | |
5530 | sals.nelts = 0; | |
5531 | ||
c5aa993b JM |
5532 | beg_addr_string = addr_string; |
5533 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
68219205 | 5534 | (char ***) NULL, NULL); |
c906108c | 5535 | |
b8c9b27d KB |
5536 | xfree (beg_addr_string); |
5537 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
5538 | for (i = 0; (i < sals.nelts); i++) |
5539 | { | |
5540 | sal = sals.sals[i]; | |
c5aa993b | 5541 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c | 5542 | { |
9ebf4acf | 5543 | break_string; |
c906108c | 5544 | if (extra_args_len) |
9ebf4acf AC |
5545 | break_string = xstrprintf ("*0x%s %s", paddr_nz (high), |
5546 | extra_args); | |
c906108c | 5547 | else |
9ebf4acf | 5548 | break_string = xstrprintf ("*0x%s", paddr_nz (high)); |
0101ce28 | 5549 | break_command_1 (break_string, flag, from_tty, NULL); |
b8c9b27d | 5550 | xfree (break_string); |
c906108c SS |
5551 | } |
5552 | else | |
5553 | error ("No function contains the specified address"); | |
5554 | } | |
5555 | if (sals.nelts > 1) | |
5556 | { | |
53a5351d JM |
5557 | warning ("Multiple breakpoints were set.\n"); |
5558 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5559 | } |
c5aa993b | 5560 | do_cleanups (old_chain); |
c906108c SS |
5561 | } |
5562 | ||
5563 | ||
5564 | /* Helper function for break_command_1 and disassemble_command. */ | |
5565 | ||
5566 | void | |
fba45db2 | 5567 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5568 | { |
5569 | CORE_ADDR pc; | |
5570 | ||
5571 | if (sal->pc == 0 && sal->symtab != NULL) | |
5572 | { | |
5573 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5574 | error ("No line %d in file \"%s\".", | |
5575 | sal->line, sal->symtab->filename); | |
5576 | sal->pc = pc; | |
5577 | } | |
5578 | ||
5579 | if (sal->section == 0 && sal->symtab != NULL) | |
5580 | { | |
5581 | struct blockvector *bv; | |
c5aa993b JM |
5582 | struct block *b; |
5583 | struct symbol *sym; | |
5584 | int index; | |
c906108c | 5585 | |
c5aa993b | 5586 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5587 | if (bv != NULL) |
5588 | { | |
c5aa993b | 5589 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5590 | sym = block_function (b); |
5591 | if (sym != NULL) | |
5592 | { | |
5593 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5594 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5595 | } | |
5596 | else | |
5597 | { | |
5598 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5599 | have to look harder. This case can be executed if we have |
5600 | line numbers but no functions (as can happen in assembly | |
5601 | source). */ | |
c906108c | 5602 | |
c5aa993b | 5603 | struct minimal_symbol *msym; |
c906108c SS |
5604 | |
5605 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5606 | if (msym) | |
5607 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5608 | } | |
5609 | } | |
5610 | } | |
5611 | } | |
5612 | ||
5613 | void | |
fba45db2 | 5614 | break_command (char *arg, int from_tty) |
c906108c | 5615 | { |
0101ce28 | 5616 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5617 | } |
5618 | ||
502fd408 | 5619 | void |
fba45db2 | 5620 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5621 | { |
5622 | break_at_finish_command_1 (arg, 0, from_tty); | |
5623 | } | |
5624 | ||
502fd408 | 5625 | void |
fba45db2 | 5626 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5627 | { |
5628 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5629 | } | |
5630 | ||
5631 | void | |
fba45db2 | 5632 | tbreak_command (char *arg, int from_tty) |
c906108c | 5633 | { |
0101ce28 | 5634 | break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL); |
c906108c SS |
5635 | } |
5636 | ||
502fd408 | 5637 | void |
fba45db2 | 5638 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5639 | { |
5640 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5641 | } | |
5642 | ||
5643 | static void | |
fba45db2 | 5644 | hbreak_command (char *arg, int from_tty) |
c906108c | 5645 | { |
0101ce28 | 5646 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty, NULL); |
c906108c SS |
5647 | } |
5648 | ||
5649 | static void | |
fba45db2 | 5650 | thbreak_command (char *arg, int from_tty) |
c906108c | 5651 | { |
0101ce28 | 5652 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty, NULL); |
c906108c SS |
5653 | } |
5654 | ||
5655 | static void | |
fba45db2 | 5656 | stop_command (char *arg, int from_tty) |
c906108c SS |
5657 | { |
5658 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5659 | Usage: stop in <function | address>\n\ | |
5660 | stop at <line>\n"); | |
5661 | } | |
5662 | ||
5663 | static void | |
fba45db2 | 5664 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5665 | { |
5666 | int badInput = 0; | |
5667 | ||
c5aa993b | 5668 | if (arg == (char *) NULL) |
c906108c SS |
5669 | badInput = 1; |
5670 | else if (*arg != '*') | |
5671 | { | |
5672 | char *argptr = arg; | |
5673 | int hasColon = 0; | |
5674 | ||
53a5351d JM |
5675 | /* look for a ':'. If this is a line number specification, then |
5676 | say it is bad, otherwise, it should be an address or | |
5677 | function/method name */ | |
c906108c | 5678 | while (*argptr && !hasColon) |
c5aa993b JM |
5679 | { |
5680 | hasColon = (*argptr == ':'); | |
5681 | argptr++; | |
5682 | } | |
c906108c SS |
5683 | |
5684 | if (hasColon) | |
c5aa993b | 5685 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5686 | else |
c5aa993b | 5687 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5688 | } |
5689 | ||
5690 | if (badInput) | |
c5aa993b | 5691 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c | 5692 | else |
0101ce28 | 5693 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5694 | } |
5695 | ||
5696 | static void | |
fba45db2 | 5697 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5698 | { |
5699 | int badInput = 0; | |
5700 | ||
c5aa993b | 5701 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5702 | badInput = 1; |
5703 | else | |
5704 | { | |
5705 | char *argptr = arg; | |
5706 | int hasColon = 0; | |
5707 | ||
5708 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5709 | it is probably a line number. */ |
c906108c | 5710 | while (*argptr && !hasColon) |
c5aa993b JM |
5711 | { |
5712 | hasColon = (*argptr == ':'); | |
5713 | argptr++; | |
5714 | } | |
c906108c SS |
5715 | |
5716 | if (hasColon) | |
c5aa993b | 5717 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5718 | else |
c5aa993b | 5719 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5720 | } |
5721 | ||
5722 | if (badInput) | |
c5aa993b | 5723 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c | 5724 | else |
0101ce28 | 5725 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5726 | } |
5727 | ||
53a5351d JM |
5728 | /* accessflag: hw_write: watch write, |
5729 | hw_read: watch read, | |
5730 | hw_access: watch access (read or write) */ | |
c906108c | 5731 | static void |
fba45db2 | 5732 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5733 | { |
5734 | struct breakpoint *b; | |
5735 | struct symtab_and_line sal; | |
5736 | struct expression *exp; | |
5737 | struct block *exp_valid_block; | |
5738 | struct value *val, *mark; | |
5739 | struct frame_info *frame; | |
5740 | struct frame_info *prev_frame = NULL; | |
5741 | char *exp_start = NULL; | |
5742 | char *exp_end = NULL; | |
5743 | char *tok, *end_tok; | |
5744 | int toklen; | |
5745 | char *cond_start = NULL; | |
5746 | char *cond_end = NULL; | |
5747 | struct expression *cond = NULL; | |
5748 | int i, other_type_used, target_resources_ok = 0; | |
5749 | enum bptype bp_type; | |
5750 | int mem_cnt = 0; | |
5751 | ||
fe39c653 | 5752 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5753 | |
c906108c SS |
5754 | /* Parse arguments. */ |
5755 | innermost_block = NULL; | |
5756 | exp_start = arg; | |
5757 | exp = parse_exp_1 (&arg, 0, 0); | |
5758 | exp_end = arg; | |
5759 | exp_valid_block = innermost_block; | |
5760 | mark = value_mark (); | |
5761 | val = evaluate_expression (exp); | |
5762 | release_value (val); | |
5763 | if (VALUE_LAZY (val)) | |
5764 | value_fetch_lazy (val); | |
5765 | ||
5766 | tok = arg; | |
5767 | while (*tok == ' ' || *tok == '\t') | |
5768 | tok++; | |
5769 | end_tok = tok; | |
5770 | ||
5771 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5772 | end_tok++; | |
5773 | ||
5774 | toklen = end_tok - tok; | |
5775 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5776 | { | |
5777 | tok = cond_start = end_tok + 1; | |
5778 | cond = parse_exp_1 (&tok, 0, 0); | |
5779 | cond_end = tok; | |
5780 | } | |
5781 | if (*tok) | |
c5aa993b | 5782 | error ("Junk at end of command."); |
c906108c | 5783 | |
53a5351d | 5784 | if (accessflag == hw_read) |
c5aa993b | 5785 | bp_type = bp_read_watchpoint; |
53a5351d | 5786 | else if (accessflag == hw_access) |
c5aa993b JM |
5787 | bp_type = bp_access_watchpoint; |
5788 | else | |
5789 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5790 | |
5791 | mem_cnt = can_use_hardware_watchpoint (val); | |
5792 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5793 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5794 | if (mem_cnt != 0) |
5795 | { | |
5796 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5797 | target_resources_ok = |
5798 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5799 | other_type_used); | |
c5aa993b | 5800 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5801 | error ("Target does not support this type of hardware watchpoint."); |
5802 | ||
c5aa993b | 5803 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5804 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5805 | } |
c906108c SS |
5806 | |
5807 | #if defined(HPUXHPPA) | |
c5aa993b | 5808 | /* On HP-UX if you set a h/w |
c906108c SS |
5809 | watchpoint before the "run" command, the inferior dies with a e.g., |
5810 | SIGILL once you start it. I initially believed this was due to a | |
5811 | bad interaction between page protection traps and the initial | |
5812 | startup sequence by the dynamic linker. | |
5813 | ||
5814 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5815 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5816 | yet, which forced slow watches before a "run" or "attach", and it |
5817 | still fails somewhere in the startup code. | |
5818 | ||
5819 | Until I figure out what's happening, I'm disallowing watches altogether | |
5820 | before the "run" or "attach" command. We'll tell the user they must | |
5821 | set watches after getting the program started. */ | |
c5aa993b | 5822 | if (!target_has_execution) |
c906108c SS |
5823 | { |
5824 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5825 | return; | |
5826 | } | |
5827 | #endif /* HPUXHPPA */ | |
c5aa993b | 5828 | |
4d28f7a8 KB |
5829 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5830 | watchpoint could not be set. */ | |
5831 | if (!mem_cnt || target_resources_ok <= 0) | |
5832 | bp_type = bp_watchpoint; | |
5833 | ||
c906108c | 5834 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5835 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5836 | set_breakpoint_count (breakpoint_count + 1); |
5837 | b->number = breakpoint_count; | |
b5de0fa7 | 5838 | b->disposition = disp_donttouch; |
c906108c SS |
5839 | b->exp = exp; |
5840 | b->exp_valid_block = exp_valid_block; | |
5841 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5842 | b->val = val; | |
5843 | b->cond = cond; | |
5844 | if (cond_start) | |
5845 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5846 | else | |
5847 | b->cond_string = 0; | |
c5aa993b | 5848 | |
c906108c SS |
5849 | frame = block_innermost_frame (exp_valid_block); |
5850 | if (frame) | |
5851 | { | |
5852 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5853 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5854 | } |
5855 | else | |
101dcfbe AC |
5856 | { |
5857 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5858 | } | |
c906108c | 5859 | |
c906108c SS |
5860 | /* If the expression is "local", then set up a "watchpoint scope" |
5861 | breakpoint at the point where we've left the scope of the watchpoint | |
5862 | expression. */ | |
5863 | if (innermost_block) | |
5864 | { | |
5865 | if (prev_frame) | |
5866 | { | |
5867 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5868 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5869 | bp_watchpoint_scope); | |
c906108c | 5870 | |
b5de0fa7 | 5871 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5872 | |
5873 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5874 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5875 | |
5876 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5877 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5878 | |
5879 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5880 | scope_breakpoint->loc->requested_address |
5881 | = get_frame_pc (prev_frame); | |
5882 | scope_breakpoint->loc->address | |
88f7da05 KB |
5883 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, |
5884 | scope_breakpoint->type); | |
c906108c SS |
5885 | |
5886 | /* The scope breakpoint is related to the watchpoint. We | |
5887 | will need to act on them together. */ | |
5888 | b->related_breakpoint = scope_breakpoint; | |
5889 | } | |
5890 | } | |
5891 | value_free_to_mark (mark); | |
5892 | mention (b); | |
5893 | } | |
5894 | ||
5895 | /* Return count of locations need to be watched and can be handled | |
5896 | in hardware. If the watchpoint can not be handled | |
5897 | in hardware return zero. */ | |
5898 | ||
53a5351d JM |
5899 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) |
5900 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5901 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5902 | #endif |
5903 | ||
5904 | static int | |
fba45db2 | 5905 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5906 | { |
5907 | int found_memory_cnt = 0; | |
2e70b7b9 | 5908 | struct value *head = v; |
c906108c SS |
5909 | |
5910 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5911 | if (!can_use_hw_watchpoints) |
c906108c | 5912 | return 0; |
c5aa993b | 5913 | |
5c44784c JM |
5914 | /* Make sure that the value of the expression depends only upon |
5915 | memory contents, and values computed from them within GDB. If we | |
5916 | find any register references or function calls, we can't use a | |
5917 | hardware watchpoint. | |
5918 | ||
5919 | The idea here is that evaluating an expression generates a series | |
5920 | of values, one holding the value of every subexpression. (The | |
5921 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5922 | a*b+c.) GDB's values hold almost enough information to establish | |
5923 | the criteria given above --- they identify memory lvalues, | |
5924 | register lvalues, computed values, etcetera. So we can evaluate | |
5925 | the expression, and then scan the chain of values that leaves | |
5926 | behind to decide whether we can detect any possible change to the | |
5927 | expression's final value using only hardware watchpoints. | |
5928 | ||
5929 | However, I don't think that the values returned by inferior | |
5930 | function calls are special in any way. So this function may not | |
5931 | notice that an expression involving an inferior function call | |
5932 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5933 | for (; v; v = v->next) |
c906108c | 5934 | { |
5c44784c | 5935 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5936 | { |
5c44784c JM |
5937 | if (VALUE_LAZY (v)) |
5938 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5939 | we either just used its address (e.g., `a' in `a.b') or | |
5940 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5941 | ; | |
53a5351d | 5942 | else |
5c44784c JM |
5943 | { |
5944 | /* Ahh, memory we actually used! Check if we can cover | |
5945 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5946 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5947 | ||
5948 | /* We only watch structs and arrays if user asked for it | |
5949 | explicitly, never if they just happen to appear in a | |
5950 | middle of some value chain. */ | |
5951 | if (v == head | |
5952 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5953 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5954 | { | |
5955 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5956 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5957 | ||
5958 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5959 | return 0; | |
5960 | else | |
5961 | found_memory_cnt++; | |
5962 | } | |
5c44784c | 5963 | } |
c5aa993b | 5964 | } |
c906108c | 5965 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5966 | return 0; /* ??? What does this represent? */ |
5967 | else if (v->lval == lval_register) | |
5968 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5969 | } |
5970 | ||
5971 | /* The expression itself looks suitable for using a hardware | |
5972 | watchpoint, but give the target machine a chance to reject it. */ | |
5973 | return found_memory_cnt; | |
5974 | } | |
5975 | ||
8b93c638 | 5976 | void |
fba45db2 | 5977 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5978 | { |
5979 | watch_command (arg, from_tty); | |
5980 | } | |
8926118c | 5981 | |
c5aa993b | 5982 | static void |
fba45db2 | 5983 | watch_command (char *arg, int from_tty) |
c906108c | 5984 | { |
53a5351d | 5985 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5986 | } |
5987 | ||
8b93c638 | 5988 | void |
fba45db2 | 5989 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5990 | { |
5991 | rwatch_command (arg, from_tty); | |
5992 | } | |
8926118c | 5993 | |
c5aa993b | 5994 | static void |
fba45db2 | 5995 | rwatch_command (char *arg, int from_tty) |
c906108c | 5996 | { |
53a5351d | 5997 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5998 | } |
5999 | ||
8b93c638 | 6000 | void |
fba45db2 | 6001 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6002 | { |
6003 | awatch_command (arg, from_tty); | |
6004 | } | |
8926118c | 6005 | |
c5aa993b | 6006 | static void |
fba45db2 | 6007 | awatch_command (char *arg, int from_tty) |
c906108c | 6008 | { |
53a5351d | 6009 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6010 | } |
c906108c | 6011 | \f |
c5aa993b | 6012 | |
43ff13b4 | 6013 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6014 | because it uses the mechanisms of breakpoints. */ |
6015 | ||
43ff13b4 JM |
6016 | /* This function is called by fetch_inferior_event via the |
6017 | cmd_continuation pointer, to complete the until command. It takes | |
6018 | care of cleaning up the temporary breakpoints set up by the until | |
6019 | command. */ | |
c2c6d25f JM |
6020 | static void |
6021 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 6022 | { |
0d06e24b JM |
6023 | struct cleanup *cleanups; |
6024 | ||
57e687d9 | 6025 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 6026 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
6027 | } |
6028 | ||
c906108c | 6029 | void |
ae66c1fc | 6030 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6031 | { |
6032 | struct symtabs_and_lines sals; | |
6033 | struct symtab_and_line sal; | |
6e7f8b9c | 6034 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
6035 | struct breakpoint *breakpoint; |
6036 | struct cleanup *old_chain; | |
0d06e24b JM |
6037 | struct continuation_arg *arg1; |
6038 | ||
c906108c SS |
6039 | |
6040 | clear_proceed_status (); | |
6041 | ||
6042 | /* Set a breakpoint where the user wants it and at return from | |
6043 | this function */ | |
c5aa993b | 6044 | |
c906108c SS |
6045 | if (default_breakpoint_valid) |
6046 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6047 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6048 | else |
53a5351d | 6049 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6050 | 0, (char ***) NULL, NULL); |
c5aa993b | 6051 | |
c906108c SS |
6052 | if (sals.nelts != 1) |
6053 | error ("Couldn't get information on specified line."); | |
c5aa993b | 6054 | |
c906108c | 6055 | sal = sals.sals[0]; |
b8c9b27d | 6056 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6057 | |
c906108c SS |
6058 | if (*arg) |
6059 | error ("Junk at end of arguments."); | |
c5aa993b | 6060 | |
c906108c | 6061 | resolve_sal_pc (&sal); |
c5aa993b | 6062 | |
ae66c1fc EZ |
6063 | if (anywhere) |
6064 | /* If the user told us to continue until a specified location, | |
6065 | we don't specify a frame at which we need to stop. */ | |
6066 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6067 | else | |
6068 | /* Otherwise, specify the current frame, because we want to stop only | |
6069 | at the very same frame. */ | |
6070 | breakpoint = set_momentary_breakpoint (sal, | |
6071 | get_frame_id (deprecated_selected_frame), | |
6072 | bp_until); | |
c5aa993b | 6073 | |
6426a772 | 6074 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 6075 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6076 | else |
4d6140d9 | 6077 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
6078 | |
6079 | /* If we are running asynchronously, and the target supports async | |
6080 | execution, we are not waiting for the target to stop, in the call | |
6081 | tp proceed, below. This means that we cannot delete the | |
6082 | brekpoints until the target has actually stopped. The only place | |
6083 | where we get a chance to do that is in fetch_inferior_event, so | |
6084 | we must set things up for that. */ | |
6085 | ||
6426a772 | 6086 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 6087 | { |
0d06e24b JM |
6088 | /* In this case the arg for the continuation is just the point |
6089 | in the exec_cleanups chain from where to start doing | |
6090 | cleanups, because all the continuation does is the cleanups in | |
6091 | the exec_cleanup_chain. */ | |
6092 | arg1 = | |
6093 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
6094 | arg1->next = NULL; |
6095 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
6096 | |
6097 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 6098 | } |
c906108c | 6099 | |
ae66c1fc EZ |
6100 | /* Keep within the current frame, or in frames called by the current |
6101 | one. */ | |
c906108c SS |
6102 | if (prev_frame) |
6103 | { | |
30f7db39 AC |
6104 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6105 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
6106 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6107 | bp_until); | |
6426a772 | 6108 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 6109 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6110 | else |
4d6140d9 | 6111 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6112 | } |
c5aa993b | 6113 | |
c906108c | 6114 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
6115 | /* Do the cleanups now, anly if we are not running asynchronously, |
6116 | of if we are, but the target is still synchronous. */ | |
6426a772 | 6117 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 6118 | do_cleanups (old_chain); |
c906108c | 6119 | } |
ae66c1fc | 6120 | |
c906108c | 6121 | static void |
fba45db2 | 6122 | ep_skip_leading_whitespace (char **s) |
c906108c | 6123 | { |
c5aa993b JM |
6124 | if ((s == NULL) || (*s == NULL)) |
6125 | return; | |
6126 | while (isspace (**s)) | |
6127 | *s += 1; | |
c906108c | 6128 | } |
c5aa993b | 6129 | |
c906108c SS |
6130 | /* This function examines a string, and attempts to find a token |
6131 | that might be an event name in the leading characters. If a | |
6132 | possible match is found, a pointer to the last character of | |
6133 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6134 | |
c906108c | 6135 | static char * |
fba45db2 | 6136 | ep_find_event_name_end (char *arg) |
c906108c | 6137 | { |
c5aa993b JM |
6138 | char *s = arg; |
6139 | char *event_name_end = NULL; | |
6140 | ||
c906108c SS |
6141 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6142 | if (arg == NULL) | |
6143 | return NULL; | |
c5aa993b | 6144 | |
c906108c | 6145 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6146 | Basically, we're looking for alphanumerics and underscores; |
6147 | anything else delimites the token. */ | |
c906108c SS |
6148 | while (*s != '\0') |
6149 | { | |
c5aa993b JM |
6150 | if (!isalnum (*s) && (*s != '_')) |
6151 | break; | |
c906108c SS |
6152 | event_name_end = s; |
6153 | s++; | |
6154 | } | |
c5aa993b | 6155 | |
c906108c SS |
6156 | return event_name_end; |
6157 | } | |
6158 | ||
c5aa993b | 6159 | |
c906108c SS |
6160 | /* This function attempts to parse an optional "if <cond>" clause |
6161 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6162 | |
c906108c SS |
6163 | Else, it returns a pointer to the condition string. (It does not |
6164 | attempt to evaluate the string against a particular block.) And, | |
6165 | it updates arg to point to the first character following the parsed | |
6166 | if clause in the arg string. */ | |
53a5351d | 6167 | |
c906108c | 6168 | static char * |
fba45db2 | 6169 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6170 | { |
c5aa993b JM |
6171 | char *cond_string; |
6172 | ||
6173 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6174 | return NULL; |
c5aa993b | 6175 | |
c906108c SS |
6176 | /* Skip the "if" keyword. */ |
6177 | (*arg) += 2; | |
c5aa993b | 6178 | |
c906108c SS |
6179 | /* Skip any extra leading whitespace, and record the start of the |
6180 | condition string. */ | |
6181 | ep_skip_leading_whitespace (arg); | |
6182 | cond_string = *arg; | |
c5aa993b | 6183 | |
c906108c SS |
6184 | /* Assume that the condition occupies the remainder of the arg string. */ |
6185 | (*arg) += strlen (cond_string); | |
c5aa993b | 6186 | |
c906108c SS |
6187 | return cond_string; |
6188 | } | |
c5aa993b | 6189 | |
c906108c SS |
6190 | /* This function attempts to parse an optional filename from the arg |
6191 | string. If one is not found, it returns NULL. | |
c5aa993b | 6192 | |
c906108c SS |
6193 | Else, it returns a pointer to the parsed filename. (This function |
6194 | makes no attempt to verify that a file of that name exists, or is | |
6195 | accessible.) And, it updates arg to point to the first character | |
6196 | following the parsed filename in the arg string. | |
c5aa993b | 6197 | |
c906108c SS |
6198 | Note that clients needing to preserve the returned filename for |
6199 | future access should copy it to their own buffers. */ | |
6200 | static char * | |
fba45db2 | 6201 | ep_parse_optional_filename (char **arg) |
c906108c | 6202 | { |
c5aa993b JM |
6203 | static char filename[1024]; |
6204 | char *arg_p = *arg; | |
6205 | int i; | |
6206 | char c; | |
6207 | ||
c906108c SS |
6208 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6209 | return NULL; | |
c5aa993b JM |
6210 | |
6211 | for (i = 0;; i++) | |
c906108c SS |
6212 | { |
6213 | c = *arg_p; | |
6214 | if (isspace (c)) | |
c5aa993b | 6215 | c = '\0'; |
c906108c SS |
6216 | filename[i] = c; |
6217 | if (c == '\0') | |
c5aa993b | 6218 | break; |
c906108c SS |
6219 | arg_p++; |
6220 | } | |
6221 | *arg = arg_p; | |
c5aa993b | 6222 | |
c906108c SS |
6223 | return filename; |
6224 | } | |
c5aa993b | 6225 | |
c906108c SS |
6226 | /* Commands to deal with catching events, such as signals, exceptions, |
6227 | process start/exit, etc. */ | |
c5aa993b JM |
6228 | |
6229 | typedef enum | |
6230 | { | |
6231 | catch_fork, catch_vfork | |
6232 | } | |
6233 | catch_fork_kind; | |
6234 | ||
c906108c | 6235 | static void |
fba45db2 KB |
6236 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6237 | int from_tty) | |
c906108c | 6238 | { |
c5aa993b JM |
6239 | char *cond_string = NULL; |
6240 | ||
c906108c | 6241 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6242 | |
c906108c | 6243 | /* The allowed syntax is: |
c5aa993b JM |
6244 | catch [v]fork |
6245 | catch [v]fork if <cond> | |
6246 | ||
c906108c SS |
6247 | First, check if there's an if clause. */ |
6248 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6249 | |
c906108c SS |
6250 | if ((*arg != '\0') && !isspace (*arg)) |
6251 | error ("Junk at end of arguments."); | |
c5aa993b | 6252 | |
c906108c SS |
6253 | /* If this target supports it, create a fork or vfork catchpoint |
6254 | and enable reporting of such events. */ | |
c5aa993b JM |
6255 | switch (fork_kind) |
6256 | { | |
6257 | case catch_fork: | |
c906108c SS |
6258 | create_fork_event_catchpoint (tempflag, cond_string); |
6259 | break; | |
c5aa993b | 6260 | case catch_vfork: |
c906108c SS |
6261 | create_vfork_event_catchpoint (tempflag, cond_string); |
6262 | break; | |
c5aa993b | 6263 | default: |
c906108c SS |
6264 | error ("unsupported or unknown fork kind; cannot catch it"); |
6265 | break; | |
c5aa993b | 6266 | } |
c906108c SS |
6267 | } |
6268 | ||
6269 | static void | |
fba45db2 | 6270 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6271 | { |
c5aa993b | 6272 | char *cond_string = NULL; |
c906108c SS |
6273 | |
6274 | ep_skip_leading_whitespace (&arg); | |
6275 | ||
6276 | /* The allowed syntax is: | |
c5aa993b JM |
6277 | catch exec |
6278 | catch exec if <cond> | |
c906108c SS |
6279 | |
6280 | First, check if there's an if clause. */ | |
6281 | cond_string = ep_parse_optional_if_clause (&arg); | |
6282 | ||
6283 | if ((*arg != '\0') && !isspace (*arg)) | |
6284 | error ("Junk at end of arguments."); | |
6285 | ||
6286 | /* If this target supports it, create an exec catchpoint | |
6287 | and enable reporting of such events. */ | |
6288 | create_exec_event_catchpoint (tempflag, cond_string); | |
6289 | } | |
c5aa993b | 6290 | |
c906108c | 6291 | static void |
fba45db2 | 6292 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6293 | { |
c5aa993b JM |
6294 | char *dll_pathname = NULL; |
6295 | char *cond_string = NULL; | |
6296 | ||
c906108c | 6297 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6298 | |
c906108c | 6299 | /* The allowed syntax is: |
c5aa993b JM |
6300 | catch load |
6301 | catch load if <cond> | |
6302 | catch load <filename> | |
6303 | catch load <filename> if <cond> | |
6304 | ||
c906108c SS |
6305 | The user is not allowed to specify the <filename> after an |
6306 | if clause. | |
c5aa993b | 6307 | |
c906108c | 6308 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6309 | |
c906108c SS |
6310 | First, check if there's an if clause. If so, then there |
6311 | cannot be a filename. */ | |
6312 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6313 | |
c906108c SS |
6314 | /* If there was an if clause, then there cannot be a filename. |
6315 | Else, there might be a filename and an if clause. */ | |
6316 | if (cond_string == NULL) | |
6317 | { | |
6318 | dll_pathname = ep_parse_optional_filename (&arg); | |
6319 | ep_skip_leading_whitespace (&arg); | |
6320 | cond_string = ep_parse_optional_if_clause (&arg); | |
6321 | } | |
c5aa993b | 6322 | |
c906108c SS |
6323 | if ((*arg != '\0') && !isspace (*arg)) |
6324 | error ("Junk at end of arguments."); | |
c5aa993b | 6325 | |
c906108c SS |
6326 | /* Create a load breakpoint that only triggers when a load of |
6327 | the specified dll (or any dll, if no pathname was specified) | |
6328 | occurs. */ | |
39f77062 | 6329 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6330 | dll_pathname, cond_string); |
c906108c | 6331 | } |
c5aa993b | 6332 | |
c906108c | 6333 | static void |
fba45db2 | 6334 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6335 | { |
c5aa993b JM |
6336 | char *dll_pathname = NULL; |
6337 | char *cond_string = NULL; | |
6338 | ||
c906108c | 6339 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6340 | |
c906108c | 6341 | /* The allowed syntax is: |
c5aa993b JM |
6342 | catch unload |
6343 | catch unload if <cond> | |
6344 | catch unload <filename> | |
6345 | catch unload <filename> if <cond> | |
6346 | ||
c906108c SS |
6347 | The user is not allowed to specify the <filename> after an |
6348 | if clause. | |
c5aa993b | 6349 | |
c906108c | 6350 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6351 | |
c906108c SS |
6352 | First, check if there's an if clause. If so, then there |
6353 | cannot be a filename. */ | |
6354 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6355 | |
c906108c SS |
6356 | /* If there was an if clause, then there cannot be a filename. |
6357 | Else, there might be a filename and an if clause. */ | |
6358 | if (cond_string == NULL) | |
6359 | { | |
6360 | dll_pathname = ep_parse_optional_filename (&arg); | |
6361 | ep_skip_leading_whitespace (&arg); | |
6362 | cond_string = ep_parse_optional_if_clause (&arg); | |
6363 | } | |
c5aa993b | 6364 | |
c906108c SS |
6365 | if ((*arg != '\0') && !isspace (*arg)) |
6366 | error ("Junk at end of arguments."); | |
c5aa993b | 6367 | |
c906108c SS |
6368 | /* Create an unload breakpoint that only triggers when an unload of |
6369 | the specified dll (or any dll, if no pathname was specified) | |
6370 | occurs. */ | |
39f77062 | 6371 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6372 | dll_pathname, cond_string); |
c906108c | 6373 | } |
c906108c SS |
6374 | |
6375 | /* Commands to deal with catching exceptions. */ | |
6376 | ||
6377 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6378 | exception event callback */ |
c906108c SS |
6379 | |
6380 | static void | |
fba45db2 KB |
6381 | create_exception_catchpoint (int tempflag, char *cond_string, |
6382 | enum exception_event_kind ex_event, | |
6383 | struct symtab_and_line *sal) | |
c906108c | 6384 | { |
c5aa993b | 6385 | struct breakpoint *b; |
c5aa993b | 6386 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6387 | enum bptype bptype; |
c906108c | 6388 | |
c5aa993b | 6389 | if (!sal) /* no exception support? */ |
c906108c SS |
6390 | return; |
6391 | ||
c906108c SS |
6392 | switch (ex_event) |
6393 | { | |
c5aa993b | 6394 | case EX_EVENT_THROW: |
4d28f7a8 | 6395 | bptype = bp_catch_throw; |
c5aa993b JM |
6396 | break; |
6397 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6398 | bptype = bp_catch_catch; |
c5aa993b JM |
6399 | break; |
6400 | default: /* error condition */ | |
c5aa993b | 6401 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6402 | } |
4d28f7a8 KB |
6403 | |
6404 | b = set_raw_breakpoint (*sal, bptype); | |
6405 | set_breakpoint_count (breakpoint_count + 1); | |
6406 | b->number = breakpoint_count; | |
6407 | b->cond = NULL; | |
6408 | b->cond_string = (cond_string == NULL) ? | |
6409 | NULL : savestring (cond_string, strlen (cond_string)); | |
6410 | b->thread = thread; | |
6411 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6412 | b->enable_state = bp_enabled; |
6413 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6414 | mention (b); |
6415 | } | |
6416 | ||
3086aeae DJ |
6417 | static enum print_stop_action |
6418 | print_exception_catchpoint (struct breakpoint *b) | |
6419 | { | |
6420 | annotate_catchpoint (b->number); | |
6421 | ||
6422 | if (strstr (b->addr_string, "throw") != NULL) | |
6423 | printf_filtered ("\nCatchpoint %d (exception thrown)\n", | |
6424 | b->number); | |
6425 | else | |
6426 | printf_filtered ("\nCatchpoint %d (exception caught)\n", | |
6427 | b->number); | |
6428 | ||
6429 | return PRINT_SRC_AND_LOC; | |
6430 | } | |
6431 | ||
6432 | static void | |
6433 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6434 | { | |
6435 | if (addressprint) | |
6436 | { | |
6437 | annotate_field (4); | |
5cab636d | 6438 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6439 | } |
6440 | annotate_field (5); | |
5cab636d | 6441 | *last_addr = b->loc->address; |
3086aeae DJ |
6442 | if (strstr (b->addr_string, "throw") != NULL) |
6443 | ui_out_field_string (uiout, "what", "exception throw"); | |
6444 | else | |
6445 | ui_out_field_string (uiout, "what", "exception catch"); | |
6446 | } | |
6447 | ||
6448 | static void | |
6449 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6450 | { | |
6451 | if (strstr (b->addr_string, "throw") != NULL) | |
6452 | printf_filtered ("Catchpoint %d (throw)", b->number); | |
6453 | else | |
6454 | printf_filtered ("Catchpoint %d (catch)", b->number); | |
6455 | } | |
6456 | ||
6457 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6458 | print_exception_catchpoint, | |
6459 | print_one_exception_catchpoint, | |
6460 | print_mention_exception_catchpoint | |
6461 | }; | |
6462 | ||
6463 | static int | |
6464 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6465 | enum exception_event_kind ex_event, int from_tty) | |
6466 | { | |
6467 | char *trigger_func_name, *nameptr; | |
6468 | struct symtabs_and_lines sals; | |
6469 | struct breakpoint *b; | |
6470 | ||
6471 | if (ex_event == EX_EVENT_CATCH) | |
6472 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6473 | else | |
6474 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6475 | ||
6476 | nameptr = trigger_func_name; | |
68219205 | 6477 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6478 | if (sals.nelts == 0) |
6479 | { | |
b59661bd | 6480 | xfree (trigger_func_name); |
3086aeae DJ |
6481 | return 0; |
6482 | } | |
6483 | ||
6484 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6485 | set_breakpoint_count (breakpoint_count + 1); | |
6486 | b->number = breakpoint_count; | |
6487 | b->cond = NULL; | |
6488 | b->cond_string = (cond_string == NULL) ? | |
6489 | NULL : savestring (cond_string, strlen (cond_string)); | |
6490 | b->thread = -1; | |
6491 | b->addr_string = trigger_func_name; | |
6492 | b->enable_state = bp_enabled; | |
6493 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6494 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6495 | ||
b59661bd | 6496 | xfree (sals.sals); |
3086aeae DJ |
6497 | mention (b); |
6498 | return 1; | |
6499 | } | |
6500 | ||
c5aa993b | 6501 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6502 | |
6503 | static void | |
fba45db2 KB |
6504 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6505 | int tempflag, int from_tty) | |
c906108c | 6506 | { |
c5aa993b JM |
6507 | char *cond_string = NULL; |
6508 | struct symtab_and_line *sal = NULL; | |
6509 | ||
c906108c | 6510 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6511 | |
c906108c SS |
6512 | cond_string = ep_parse_optional_if_clause (&arg); |
6513 | ||
6514 | if ((*arg != '\0') && !isspace (*arg)) | |
6515 | error ("Junk at end of arguments."); | |
6516 | ||
6517 | if ((ex_event != EX_EVENT_THROW) && | |
6518 | (ex_event != EX_EVENT_CATCH)) | |
6519 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6520 | ||
3086aeae DJ |
6521 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6522 | return; | |
6523 | ||
c906108c SS |
6524 | /* See if we can find a callback routine */ |
6525 | sal = target_enable_exception_callback (ex_event, 1); | |
6526 | ||
c5aa993b | 6527 | if (sal) |
c906108c SS |
6528 | { |
6529 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6530 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6531 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6532 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6533 | else |
53a5351d | 6534 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6535 | } |
c5aa993b | 6536 | |
69f567ae | 6537 | warning ("Unsupported with this platform/compiler combination."); |
c906108c SS |
6538 | } |
6539 | ||
6540 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6541 | inside a catch_errors */ | |
6542 | ||
6543 | static int | |
4efb68b1 | 6544 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6545 | { |
6546 | args_for_catchpoint_enable *args = arg; | |
6547 | struct symtab_and_line *sal; | |
b5de0fa7 | 6548 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6549 | if (sal == NULL) |
6550 | return 0; | |
6551 | else if (sal == (struct symtab_and_line *) -1) | |
6552 | return -1; | |
6553 | else | |
c5aa993b | 6554 | return 1; /*is valid */ |
c906108c SS |
6555 | } |
6556 | ||
c906108c | 6557 | static void |
fba45db2 | 6558 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6559 | { |
c5aa993b | 6560 | |
c906108c SS |
6561 | /* The first argument may be an event name, such as "start" or "load". |
6562 | If so, then handle it as such. If it doesn't match an event name, | |
6563 | then attempt to interpret it as an exception name. (This latter is | |
6564 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6565 | |
c906108c | 6566 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6567 | char *arg1_start = arg; |
6568 | char *arg1_end; | |
6569 | int arg1_length; | |
6570 | ||
c906108c SS |
6571 | if (arg1_start == NULL) |
6572 | { | |
c5aa993b | 6573 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6574 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6575 | /* return; */ | |
c5aa993b | 6576 | /* Now, this is not allowed */ |
c906108c SS |
6577 | error ("Catch requires an event name."); |
6578 | ||
6579 | } | |
6580 | arg1_end = ep_find_event_name_end (arg1_start); | |
6581 | if (arg1_end == NULL) | |
6582 | error ("catch requires an event"); | |
6583 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6584 | |
c906108c SS |
6585 | /* Try to match what we found against known event names. */ |
6586 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6587 | { | |
6588 | error ("Catch of signal not yet implemented"); | |
6589 | } | |
6590 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6591 | { | |
53a5351d JM |
6592 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6593 | tempflag, from_tty); | |
c906108c SS |
6594 | } |
6595 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6596 | { | |
53a5351d JM |
6597 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6598 | tempflag, from_tty); | |
c906108c SS |
6599 | } |
6600 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6601 | { | |
6602 | error ("Catch of thread_start not yet implemented"); | |
6603 | } | |
6604 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6605 | { | |
6606 | error ("Catch of thread_exit not yet implemented"); | |
6607 | } | |
6608 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6609 | { | |
6610 | error ("Catch of thread_join not yet implemented"); | |
6611 | } | |
6612 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6613 | { | |
6614 | error ("Catch of start not yet implemented"); | |
6615 | } | |
6616 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6617 | { | |
6618 | error ("Catch of exit not yet implemented"); | |
6619 | } | |
6620 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6621 | { | |
c5aa993b | 6622 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6623 | } |
6624 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6625 | { | |
c5aa993b | 6626 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6627 | } |
6628 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6629 | { | |
c5aa993b | 6630 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6631 | } |
6632 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6633 | { | |
c5aa993b | 6634 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6635 | } |
6636 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6637 | { | |
c5aa993b | 6638 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6639 | } |
6640 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6641 | { | |
6642 | error ("Catch of stop not yet implemented"); | |
6643 | } | |
c5aa993b | 6644 | |
c906108c SS |
6645 | /* This doesn't appear to be an event name */ |
6646 | ||
6647 | else | |
6648 | { | |
6649 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6650 | as the name of an exception */ |
c906108c | 6651 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6652 | /* Now this is not allowed */ |
c906108c SS |
6653 | error ("Unknown event kind specified for catch"); |
6654 | ||
6655 | } | |
6656 | } | |
6657 | ||
6658 | /* Used by the gui, could be made a worker for other things. */ | |
6659 | ||
6660 | struct breakpoint * | |
fba45db2 | 6661 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6662 | { |
6663 | struct breakpoint *b; | |
4d28f7a8 | 6664 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6665 | set_breakpoint_count (breakpoint_count + 1); |
6666 | b->number = breakpoint_count; | |
c906108c SS |
6667 | b->cond = 0; |
6668 | b->thread = -1; | |
6669 | return b; | |
6670 | } | |
6671 | ||
c906108c | 6672 | static void |
fba45db2 | 6673 | catch_command (char *arg, int from_tty) |
c906108c SS |
6674 | { |
6675 | catch_command_1 (arg, 0, from_tty); | |
6676 | } | |
6677 | \f | |
6678 | ||
6679 | static void | |
fba45db2 | 6680 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6681 | { |
6682 | catch_command_1 (arg, 1, from_tty); | |
6683 | } | |
6684 | ||
80f8a6eb | 6685 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6686 | |
6687 | static void | |
fba45db2 | 6688 | clear_command (char *arg, int from_tty) |
c906108c | 6689 | { |
80f8a6eb | 6690 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6691 | int default_match; |
6692 | struct symtabs_and_lines sals; | |
6693 | struct symtab_and_line sal; | |
c906108c SS |
6694 | int i; |
6695 | ||
6696 | if (arg) | |
6697 | { | |
6698 | sals = decode_line_spec (arg, 1); | |
6699 | default_match = 0; | |
6700 | } | |
6701 | else | |
6702 | { | |
c5aa993b | 6703 | sals.sals = (struct symtab_and_line *) |
c906108c | 6704 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6705 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6706 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6707 | sal.line = default_breakpoint_line; |
6708 | sal.symtab = default_breakpoint_symtab; | |
6709 | sal.pc = default_breakpoint_address; | |
6710 | if (sal.symtab == 0) | |
6711 | error ("No source file specified."); | |
6712 | ||
6713 | sals.sals[0] = sal; | |
6714 | sals.nelts = 1; | |
6715 | ||
6716 | default_match = 1; | |
6717 | } | |
6718 | ||
6719 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6720 | to it. Do it in two passes, solely to preserve the current |
6721 | behavior that from_tty is forced true if we delete more than | |
6722 | one breakpoint. */ | |
c906108c | 6723 | |
80f8a6eb | 6724 | found = NULL; |
c906108c SS |
6725 | for (i = 0; i < sals.nelts; i++) |
6726 | { | |
6727 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6728 | If line given (pc == 0), clear all bpts on specified line. |
6729 | If defaulting, clear all bpts on default line | |
c906108c | 6730 | or at default pc. |
c5aa993b JM |
6731 | |
6732 | defaulting sal.pc != 0 tests to do | |
6733 | ||
6734 | 0 1 pc | |
6735 | 1 1 pc _and_ line | |
6736 | 0 0 line | |
6737 | 1 0 <can't happen> */ | |
c906108c SS |
6738 | |
6739 | sal = sals.sals[i]; | |
80f8a6eb | 6740 | prev = NULL; |
c906108c | 6741 | |
80f8a6eb MS |
6742 | /* Find all matching breakpoints, remove them from the |
6743 | breakpoint chain, and add them to the 'found' chain. */ | |
6744 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6745 | { |
80f8a6eb MS |
6746 | /* Are we going to delete b? */ |
6747 | if (b->type != bp_none | |
6748 | && b->type != bp_watchpoint | |
6749 | && b->type != bp_hardware_watchpoint | |
6750 | && b->type != bp_read_watchpoint | |
6751 | && b->type != bp_access_watchpoint | |
6752 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6753 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6754 | && (!section_is_overlay (b->loc->section) |
6755 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6756 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6757 | || ((default_match || (0 == sal.pc)) | |
6758 | && b->source_file != NULL | |
6759 | && sal.symtab != NULL | |
6314a349 | 6760 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
80f8a6eb MS |
6761 | && b->line_number == sal.line))) |
6762 | /* Yes, if sal source file and line matches b. */ | |
6763 | { | |
6764 | /* Remove it from breakpoint_chain... */ | |
6765 | if (b == breakpoint_chain) | |
6766 | { | |
6767 | /* b is at the head of the list */ | |
6768 | breakpoint_chain = b->next; | |
6769 | } | |
6770 | else | |
6771 | { | |
6772 | prev->next = b->next; | |
6773 | } | |
6774 | /* And add it to 'found' chain. */ | |
6775 | b->next = found; | |
6776 | found = b; | |
6777 | } | |
c906108c | 6778 | else |
80f8a6eb MS |
6779 | { |
6780 | /* Keep b, and keep a pointer to it. */ | |
6781 | prev = b; | |
6782 | } | |
c906108c | 6783 | } |
80f8a6eb MS |
6784 | } |
6785 | /* Now go thru the 'found' chain and delete them. */ | |
6786 | if (found == 0) | |
6787 | { | |
6788 | if (arg) | |
6789 | error ("No breakpoint at %s.", arg); | |
6790 | else | |
6791 | error ("No breakpoint at this line."); | |
6792 | } | |
c906108c | 6793 | |
80f8a6eb MS |
6794 | if (found->next) |
6795 | from_tty = 1; /* Always report if deleted more than one */ | |
6796 | if (from_tty) | |
6797 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6798 | breakpoints_changed (); | |
6799 | while (found) | |
6800 | { | |
c5aa993b | 6801 | if (from_tty) |
80f8a6eb MS |
6802 | printf_unfiltered ("%d ", found->number); |
6803 | tmp = found->next; | |
6804 | delete_breakpoint (found); | |
6805 | found = tmp; | |
c906108c | 6806 | } |
80f8a6eb MS |
6807 | if (from_tty) |
6808 | putchar_unfiltered ('\n'); | |
c906108c SS |
6809 | } |
6810 | \f | |
6811 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6812 | all breakpoints that are marked for deletion, whether hit or not. | |
6813 | This is called after any breakpoint is hit, or after errors. */ | |
6814 | ||
6815 | void | |
fba45db2 | 6816 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6817 | { |
6818 | struct breakpoint *b, *temp; | |
6819 | ||
6820 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6821 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6822 | && bs->stop) |
6823 | delete_breakpoint (bs->breakpoint_at); | |
6824 | ||
6825 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6826 | { |
b5de0fa7 | 6827 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6828 | delete_breakpoint (b); |
6829 | } | |
c906108c SS |
6830 | } |
6831 | ||
53a5351d JM |
6832 | /* Delete a breakpoint and clean up all traces of it in the data |
6833 | structures. */ | |
c906108c SS |
6834 | |
6835 | void | |
fba45db2 | 6836 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6837 | { |
52f0bd74 AC |
6838 | struct breakpoint *b; |
6839 | bpstat bs; | |
7cc221ef | 6840 | struct bp_location *loc; |
c906108c SS |
6841 | |
6842 | if (bpt == NULL) | |
6843 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6844 | ||
6845 | ||
6846 | /* Has this bp already been deleted? This can happen because multiple | |
6847 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6848 | ||
6849 | One example of this happening is a watchpoint's scope bp. When the | |
6850 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6851 | delete it. We also delete its scope bp. But the scope bp is marked | |
6852 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6853 | checked for auto-deleting bp's, which are deleted. | |
6854 | ||
6855 | A real solution to this problem might involve reference counts in bp's, | |
6856 | and/or giving them pointers back to their referencing bpstat's, and | |
6857 | teaching delete_breakpoint to only free a bp's storage when no more | |
6858 | references were extent. A cheaper bandaid was chosen. */ | |
6859 | if (bpt->type == bp_none) | |
6860 | return; | |
6861 | ||
9a4105ab AC |
6862 | if (deprecated_delete_breakpoint_hook) |
6863 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 6864 | breakpoint_delete_event (bpt->number); |
c906108c | 6865 | |
5cab636d | 6866 | if (bpt->loc->inserted) |
0bde7532 | 6867 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6868 | |
7270d8f2 OF |
6869 | free_valchain (bpt->loc); |
6870 | ||
c906108c SS |
6871 | if (breakpoint_chain == bpt) |
6872 | breakpoint_chain = bpt->next; | |
6873 | ||
7cc221ef DJ |
6874 | if (bp_location_chain == bpt->loc) |
6875 | bp_location_chain = bpt->loc->next; | |
6876 | ||
c906108c SS |
6877 | /* If we have callback-style exception catchpoints, don't go through |
6878 | the adjustments to the C++ runtime library etc. if the inferior | |
6879 | isn't actually running. target_enable_exception_callback for a | |
6880 | null target ops vector gives an undesirable error message, so we | |
6881 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6882 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6883 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6884 | { | |
53a5351d | 6885 | /* Format possible error msg */ |
9ebf4acf AC |
6886 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6887 | bpt->number); | |
6888 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
6889 | args_for_catchpoint_enable args; | |
53a5351d JM |
6890 | args.kind = bpt->type == bp_catch_catch ? |
6891 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6892 | args.enable_p = 0; |
c906108c SS |
6893 | catch_errors (cover_target_enable_exception_callback, &args, |
6894 | message, RETURN_MASK_ALL); | |
9ebf4acf | 6895 | do_cleanups (cleanups); |
c906108c SS |
6896 | } |
6897 | ||
6898 | ||
6899 | ALL_BREAKPOINTS (b) | |
6900 | if (b->next == bpt) | |
c5aa993b JM |
6901 | { |
6902 | b->next = bpt->next; | |
6903 | break; | |
6904 | } | |
c906108c | 6905 | |
7cc221ef DJ |
6906 | ALL_BP_LOCATIONS (loc) |
6907 | if (loc->next == bpt->loc) | |
6908 | { | |
6909 | loc->next = bpt->loc->next; | |
6910 | break; | |
6911 | } | |
6912 | ||
9f60f21b | 6913 | check_duplicates (bpt); |
c906108c SS |
6914 | /* If this breakpoint was inserted, and there is another breakpoint |
6915 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 6916 | if (bpt->loc->inserted |
c906108c SS |
6917 | && bpt->type != bp_hardware_watchpoint |
6918 | && bpt->type != bp_read_watchpoint | |
6919 | && bpt->type != bp_access_watchpoint | |
6920 | && bpt->type != bp_catch_fork | |
6921 | && bpt->type != bp_catch_vfork | |
6922 | && bpt->type != bp_catch_exec) | |
6923 | { | |
6924 | ALL_BREAKPOINTS (b) | |
5cab636d | 6925 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 6926 | && b->loc->section == bpt->loc->section |
5cab636d | 6927 | && !b->loc->duplicate |
b5de0fa7 EZ |
6928 | && b->enable_state != bp_disabled |
6929 | && b->enable_state != bp_shlib_disabled | |
0101ce28 | 6930 | && !b->pending |
b5de0fa7 | 6931 | && b->enable_state != bp_call_disabled) |
c5aa993b JM |
6932 | { |
6933 | int val; | |
53a5351d | 6934 | |
c2c6d25f JM |
6935 | /* We should never reach this point if there is a permanent |
6936 | breakpoint at the same address as the one being deleted. | |
6937 | If there is a permanent breakpoint somewhere, it should | |
6938 | always be the only one inserted. */ | |
b5de0fa7 | 6939 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6940 | internal_error (__FILE__, __LINE__, |
6941 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6942 | "a permanent breakpoint"); |
6943 | ||
53a5351d | 6944 | if (b->type == bp_hardware_breakpoint) |
5cab636d | 6945 | val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6946 | else |
5cab636d | 6947 | val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6948 | |
81d0cc19 | 6949 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6950 | if (val != 0) |
6951 | { | |
81d0cc19 GS |
6952 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6953 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6954 | ||
6955 | ||
6956 | if (b->type == bp_hardware_breakpoint) | |
6957 | { | |
6958 | fprintf_unfiltered (tmp_error_stream, | |
6959 | "Cannot insert hardware breakpoint %d.\n" | |
6960 | "You may have requested too many hardware breakpoints.\n", | |
6961 | b->number); | |
6962 | } | |
6963 | else | |
6964 | { | |
6965 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6966 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
5cab636d | 6967 | print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
6968 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
6969 | safe_strerror (val)); | |
6970 | } | |
6971 | ||
6972 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6973 | target_terminal_ours_for_output (); |
81d0cc19 | 6974 | error_stream(tmp_error_stream); |
c5aa993b JM |
6975 | } |
6976 | else | |
5cab636d | 6977 | b->loc->inserted = 1; |
c5aa993b | 6978 | } |
c906108c SS |
6979 | } |
6980 | ||
6981 | free_command_lines (&bpt->commands); | |
6982 | if (bpt->cond) | |
b8c9b27d | 6983 | xfree (bpt->cond); |
c906108c | 6984 | if (bpt->cond_string != NULL) |
b8c9b27d | 6985 | xfree (bpt->cond_string); |
c906108c | 6986 | if (bpt->addr_string != NULL) |
b8c9b27d | 6987 | xfree (bpt->addr_string); |
c906108c | 6988 | if (bpt->exp != NULL) |
b8c9b27d | 6989 | xfree (bpt->exp); |
c906108c | 6990 | if (bpt->exp_string != NULL) |
b8c9b27d | 6991 | xfree (bpt->exp_string); |
c906108c SS |
6992 | if (bpt->val != NULL) |
6993 | value_free (bpt->val); | |
6994 | if (bpt->source_file != NULL) | |
b8c9b27d | 6995 | xfree (bpt->source_file); |
c906108c | 6996 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6997 | xfree (bpt->dll_pathname); |
c906108c | 6998 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6999 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7000 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7001 | xfree (bpt->exec_pathname); |
c906108c SS |
7002 | |
7003 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7004 | /* FIXME, how can we find all bpstat's? | |
7005 | We just check stop_bpstat for now. */ | |
7006 | for (bs = stop_bpstat; bs; bs = bs->next) | |
7007 | if (bs->breakpoint_at == bpt) | |
7008 | { | |
7009 | bs->breakpoint_at = NULL; | |
c906108c | 7010 | bs->old_val = NULL; |
c2b8ed2c | 7011 | /* bs->commands will be freed later. */ |
c906108c SS |
7012 | } |
7013 | /* On the chance that someone will soon try again to delete this same | |
7014 | bp, we mark it as deleted before freeing its storage. */ | |
7015 | bpt->type = bp_none; | |
7016 | ||
5cab636d | 7017 | xfree (bpt->loc); |
b8c9b27d | 7018 | xfree (bpt); |
c906108c SS |
7019 | } |
7020 | ||
4d6140d9 AC |
7021 | static void |
7022 | do_delete_breakpoint_cleanup (void *b) | |
7023 | { | |
7024 | delete_breakpoint (b); | |
7025 | } | |
7026 | ||
7027 | struct cleanup * | |
7028 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7029 | { | |
7030 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7031 | } | |
7032 | ||
7033 | struct cleanup * | |
7034 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
7035 | { | |
7036 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
7037 | } | |
7038 | ||
c906108c | 7039 | void |
fba45db2 | 7040 | delete_command (char *arg, int from_tty) |
c906108c SS |
7041 | { |
7042 | struct breakpoint *b, *temp; | |
7043 | ||
ea9365bb TT |
7044 | dont_repeat (); |
7045 | ||
c906108c SS |
7046 | if (arg == 0) |
7047 | { | |
7048 | int breaks_to_delete = 0; | |
7049 | ||
7050 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7051 | Do not delete internal or call-dummy breakpoints, these |
7052 | have to be deleted with an explicit breakpoint number argument. */ | |
7053 | ALL_BREAKPOINTS (b) | |
7054 | { | |
7055 | if (b->type != bp_call_dummy && | |
7056 | b->type != bp_shlib_event && | |
c4093a6a | 7057 | b->type != bp_thread_event && |
1900040c | 7058 | b->type != bp_overlay_event && |
c5aa993b JM |
7059 | b->number >= 0) |
7060 | breaks_to_delete = 1; | |
7061 | } | |
c906108c SS |
7062 | |
7063 | /* Ask user only if there are some breakpoints to delete. */ | |
7064 | if (!from_tty | |
7065 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
7066 | { | |
c5aa993b JM |
7067 | ALL_BREAKPOINTS_SAFE (b, temp) |
7068 | { | |
7069 | if (b->type != bp_call_dummy && | |
7070 | b->type != bp_shlib_event && | |
c4093a6a | 7071 | b->type != bp_thread_event && |
1900040c | 7072 | b->type != bp_overlay_event && |
c5aa993b JM |
7073 | b->number >= 0) |
7074 | delete_breakpoint (b); | |
7075 | } | |
c906108c SS |
7076 | } |
7077 | } | |
7078 | else | |
7079 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7080 | } | |
7081 | ||
7082 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
7083 | The value we return ends up being the return value from catch_errors. | |
7084 | Unused in this case. */ | |
7085 | ||
7086 | static int | |
4efb68b1 | 7087 | breakpoint_re_set_one (void *bint) |
c906108c | 7088 | { |
53a5351d JM |
7089 | /* get past catch_errs */ |
7090 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7091 | struct value *mark; |
7092 | int i; | |
7093 | struct symtabs_and_lines sals; | |
7094 | char *s; | |
b5de0fa7 | 7095 | enum enable_state save_enable; |
c906108c SS |
7096 | |
7097 | switch (b->type) | |
7098 | { | |
7099 | case bp_none: | |
53a5351d JM |
7100 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
7101 | b->number); | |
c906108c SS |
7102 | return 0; |
7103 | case bp_breakpoint: | |
7104 | case bp_hardware_breakpoint: | |
7105 | case bp_catch_load: | |
7106 | case bp_catch_unload: | |
7107 | if (b->addr_string == NULL) | |
7108 | { | |
7109 | /* Anything without a string can't be re-set. */ | |
7110 | delete_breakpoint (b); | |
7111 | return 0; | |
7112 | } | |
b18c45ed AC |
7113 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
7114 | ||
7115 | ``And a hack it is, although Apple's Darwin version of GDB | |
7116 | contains an almost identical hack to implement a "future | |
7117 | break" command. It seems to work in many real world cases, | |
7118 | but it is easy to come up with a test case where the patch | |
7119 | doesn't help at all.'' | |
7120 | ||
7121 | ``It seems that the way GDB implements breakpoints - in - | |
7122 | shared - libraries was designed for a.out shared library | |
7123 | systems (SunOS 4) where shared libraries were loaded at a | |
7124 | fixed address in memory. Since ELF shared libraries can (and | |
7125 | will) be loaded at any address in memory, things break. | |
7126 | Fixing this is not trivial. Therefore, I'm not sure whether | |
7127 | we should add this hack to the branch only. I cannot | |
7128 | guarantee that things will be fixed on the trunk in the near | |
7129 | future.'' | |
7130 | ||
7131 | In case we have a problem, disable this breakpoint. We'll | |
7132 | restore its status if we succeed. Don't disable a | |
7133 | shlib_disabled breakpoint though. There's a fair chance we | |
7134 | can't re-set it if the shared library it's in hasn't been | |
7135 | loaded yet. */ | |
0101ce28 JJ |
7136 | |
7137 | if (b->pending) | |
7138 | break; | |
7139 | ||
b5de0fa7 | 7140 | save_enable = b->enable_state; |
b18c45ed AC |
7141 | if (b->enable_state != bp_shlib_disabled) |
7142 | b->enable_state = bp_disabled; | |
c906108c SS |
7143 | |
7144 | set_language (b->language); | |
7145 | input_radix = b->input_radix; | |
7146 | s = b->addr_string; | |
68219205 | 7147 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
7148 | for (i = 0; i < sals.nelts; i++) |
7149 | { | |
7150 | resolve_sal_pc (&sals.sals[i]); | |
7151 | ||
7152 | /* Reparse conditions, they might contain references to the | |
7153 | old symtab. */ | |
7154 | if (b->cond_string != NULL) | |
7155 | { | |
7156 | s = b->cond_string; | |
7157 | if (b->cond) | |
fad0733a DJ |
7158 | { |
7159 | xfree (b->cond); | |
7160 | /* Avoid re-freeing b->exp if an error during the call | |
7161 | to parse_exp_1. */ | |
7162 | b->cond = NULL; | |
7163 | } | |
c906108c SS |
7164 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7165 | } | |
7166 | ||
c5aa993b | 7167 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 7168 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
7169 | /* ...or new and old breakpoints both have source files, and |
7170 | the source file name or the line number changes... */ | |
c906108c SS |
7171 | || (b->source_file != NULL |
7172 | && sals.sals[i].symtab != NULL | |
6314a349 | 7173 | && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0 |
c906108c | 7174 | || b->line_number != sals.sals[i].line) |
c906108c | 7175 | ) |
c5aa993b JM |
7176 | /* ...or we switch between having a source file and not having |
7177 | one. */ | |
7178 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7179 | ) | |
c906108c SS |
7180 | { |
7181 | if (b->source_file != NULL) | |
b8c9b27d | 7182 | xfree (b->source_file); |
c906108c SS |
7183 | if (sals.sals[i].symtab == NULL) |
7184 | b->source_file = NULL; | |
7185 | else | |
7186 | b->source_file = | |
7187 | savestring (sals.sals[i].symtab->filename, | |
7188 | strlen (sals.sals[i].symtab->filename)); | |
7189 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
7190 | b->loc->requested_address = sals.sals[i].pc; |
7191 | b->loc->address | |
88f7da05 KB |
7192 | = adjust_breakpoint_address (b->loc->requested_address, |
7193 | b->type); | |
c906108c | 7194 | |
c5aa993b | 7195 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7196 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7197 | breakpoints. */ |
c906108c SS |
7198 | |
7199 | mention (b); | |
7200 | ||
7201 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7202 | rather than once for every breakpoint. */ |
c906108c SS |
7203 | breakpoints_changed (); |
7204 | } | |
cf3a9e5b | 7205 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 7206 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7207 | |
7208 | ||
c5aa993b | 7209 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7210 | can be used. */ |
9f60f21b | 7211 | check_duplicates (b); |
c906108c SS |
7212 | |
7213 | } | |
b8c9b27d | 7214 | xfree (sals.sals); |
c906108c SS |
7215 | break; |
7216 | ||
7217 | case bp_watchpoint: | |
7218 | case bp_hardware_watchpoint: | |
7219 | case bp_read_watchpoint: | |
7220 | case bp_access_watchpoint: | |
7221 | innermost_block = NULL; | |
53a5351d JM |
7222 | /* The issue arises of what context to evaluate this in. The |
7223 | same one as when it was set, but what does that mean when | |
7224 | symbols have been re-read? We could save the filename and | |
7225 | functionname, but if the context is more local than that, the | |
7226 | best we could do would be something like how many levels deep | |
7227 | and which index at that particular level, but that's going to | |
7228 | be less stable than filenames or function names. */ | |
7229 | ||
c906108c SS |
7230 | /* So for now, just use a global context. */ |
7231 | if (b->exp) | |
a355c7de AC |
7232 | { |
7233 | xfree (b->exp); | |
7234 | /* Avoid re-freeing b->exp if an error during the call to | |
7235 | parse_expression. */ | |
7236 | b->exp = NULL; | |
7237 | } | |
c906108c SS |
7238 | b->exp = parse_expression (b->exp_string); |
7239 | b->exp_valid_block = innermost_block; | |
7240 | mark = value_mark (); | |
7241 | if (b->val) | |
a355c7de AC |
7242 | { |
7243 | value_free (b->val); | |
7244 | /* Avoid re-freeing b->val if an error during the call to | |
7245 | evaluate_expression. */ | |
7246 | b->val = NULL; | |
7247 | } | |
c906108c SS |
7248 | b->val = evaluate_expression (b->exp); |
7249 | release_value (b->val); | |
468d015d | 7250 | if (VALUE_LAZY (b->val) && breakpoint_enabled (b)) |
c906108c SS |
7251 | value_fetch_lazy (b->val); |
7252 | ||
7253 | if (b->cond_string != NULL) | |
7254 | { | |
7255 | s = b->cond_string; | |
7256 | if (b->cond) | |
a355c7de AC |
7257 | { |
7258 | xfree (b->cond); | |
7259 | /* Avoid re-freeing b->exp if an error during the call | |
7260 | to parse_exp_1. */ | |
7261 | b->cond = NULL; | |
7262 | } | |
c5aa993b | 7263 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7264 | } |
468d015d | 7265 | if (breakpoint_enabled (b)) |
c906108c SS |
7266 | mention (b); |
7267 | value_free_to_mark (mark); | |
7268 | break; | |
c5aa993b JM |
7269 | case bp_catch_catch: |
7270 | case bp_catch_throw: | |
c906108c | 7271 | break; |
c5aa993b JM |
7272 | /* We needn't really do anything to reset these, since the mask |
7273 | that requests them is unaffected by e.g., new libraries being | |
7274 | loaded. */ | |
c906108c SS |
7275 | case bp_catch_fork: |
7276 | case bp_catch_vfork: | |
7277 | case bp_catch_exec: | |
7278 | break; | |
c5aa993b | 7279 | |
c906108c SS |
7280 | default: |
7281 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7282 | /* fall through */ | |
1900040c MS |
7283 | /* Delete longjmp and overlay event breakpoints; they will be |
7284 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7285 | case bp_longjmp: |
7286 | case bp_longjmp_resume: | |
1900040c | 7287 | case bp_overlay_event: |
c906108c SS |
7288 | delete_breakpoint (b); |
7289 | break; | |
7290 | ||
c5aa993b JM |
7291 | /* This breakpoint is special, it's set up when the inferior |
7292 | starts and we really don't want to touch it. */ | |
c906108c SS |
7293 | case bp_shlib_event: |
7294 | ||
c4093a6a JM |
7295 | /* Like bp_shlib_event, this breakpoint type is special. |
7296 | Once it is set up, we do not want to touch it. */ | |
7297 | case bp_thread_event: | |
7298 | ||
c5aa993b JM |
7299 | /* Keep temporary breakpoints, which can be encountered when we step |
7300 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7301 | Otherwise these should have been blown away via the cleanup chain | |
7302 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7303 | case bp_until: |
7304 | case bp_finish: | |
7305 | case bp_watchpoint_scope: | |
7306 | case bp_call_dummy: | |
7307 | case bp_step_resume: | |
7308 | break; | |
7309 | } | |
7310 | ||
7311 | return 0; | |
7312 | } | |
7313 | ||
7314 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7315 | void | |
fba45db2 | 7316 | breakpoint_re_set (void) |
c906108c SS |
7317 | { |
7318 | struct breakpoint *b, *temp; | |
7319 | enum language save_language; | |
7320 | int save_input_radix; | |
c5aa993b | 7321 | |
c906108c SS |
7322 | save_language = current_language->la_language; |
7323 | save_input_radix = input_radix; | |
7324 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7325 | { |
53a5351d | 7326 | /* Format possible error msg */ |
9ebf4acf AC |
7327 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7328 | b->number); | |
7329 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7330 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7331 | do_cleanups (cleanups); |
c5aa993b | 7332 | } |
c906108c SS |
7333 | set_language (save_language); |
7334 | input_radix = save_input_radix; | |
7335 | ||
9df628e0 RE |
7336 | if (GET_LONGJMP_TARGET_P ()) |
7337 | { | |
7338 | create_longjmp_breakpoint ("longjmp"); | |
7339 | create_longjmp_breakpoint ("_longjmp"); | |
7340 | create_longjmp_breakpoint ("siglongjmp"); | |
7341 | create_longjmp_breakpoint ("_siglongjmp"); | |
7342 | create_longjmp_breakpoint (NULL); | |
7343 | } | |
1900040c MS |
7344 | |
7345 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7346 | } |
7347 | \f | |
c906108c SS |
7348 | /* Reset the thread number of this breakpoint: |
7349 | ||
7350 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7351 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7352 | void |
fba45db2 | 7353 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7354 | { |
7355 | if (b->thread != -1) | |
7356 | { | |
39f77062 KB |
7357 | if (in_thread_list (inferior_ptid)) |
7358 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7359 | } |
7360 | } | |
7361 | ||
03ac34d5 MS |
7362 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7363 | If from_tty is nonzero, it prints a message to that effect, | |
7364 | which ends with a period (no newline). */ | |
7365 | ||
c906108c | 7366 | void |
fba45db2 | 7367 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7368 | { |
52f0bd74 | 7369 | struct breakpoint *b; |
c906108c SS |
7370 | |
7371 | if (count < 0) | |
7372 | count = 0; | |
7373 | ||
7374 | ALL_BREAKPOINTS (b) | |
7375 | if (b->number == bptnum) | |
c5aa993b JM |
7376 | { |
7377 | b->ignore_count = count; | |
221ea385 KS |
7378 | if (from_tty) |
7379 | { | |
7380 | if (count == 0) | |
7381 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7382 | bptnum); | |
7383 | else if (count == 1) | |
7384 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7385 | bptnum); | |
7386 | else | |
7387 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7388 | count, bptnum); | |
7389 | } | |
c5aa993b | 7390 | breakpoints_changed (); |
221ea385 | 7391 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7392 | return; |
7393 | } | |
c906108c SS |
7394 | |
7395 | error ("No breakpoint number %d.", bptnum); | |
7396 | } | |
7397 | ||
7398 | /* Clear the ignore counts of all breakpoints. */ | |
7399 | void | |
fba45db2 | 7400 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7401 | { |
7402 | struct breakpoint *b; | |
7403 | ||
7404 | ALL_BREAKPOINTS (b) | |
7405 | b->ignore_count = 0; | |
7406 | } | |
7407 | ||
7408 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7409 | ||
7410 | static void | |
fba45db2 | 7411 | ignore_command (char *args, int from_tty) |
c906108c SS |
7412 | { |
7413 | char *p = args; | |
52f0bd74 | 7414 | int num; |
c906108c SS |
7415 | |
7416 | if (p == 0) | |
7417 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7418 | |
c906108c | 7419 | num = get_number (&p); |
5c44784c JM |
7420 | if (num == 0) |
7421 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7422 | if (*p == 0) |
7423 | error ("Second argument (specified ignore-count) is missing."); | |
7424 | ||
7425 | set_ignore_count (num, | |
7426 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7427 | from_tty); | |
221ea385 KS |
7428 | if (from_tty) |
7429 | printf_filtered ("\n"); | |
c906108c SS |
7430 | } |
7431 | \f | |
7432 | /* Call FUNCTION on each of the breakpoints | |
7433 | whose numbers are given in ARGS. */ | |
7434 | ||
7435 | static void | |
831662b3 | 7436 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7437 | { |
52f0bd74 | 7438 | char *p = args; |
c906108c | 7439 | char *p1; |
52f0bd74 AC |
7440 | int num; |
7441 | struct breakpoint *b, *tmp; | |
11cf8741 | 7442 | int match; |
c906108c SS |
7443 | |
7444 | if (p == 0) | |
7445 | error_no_arg ("one or more breakpoint numbers"); | |
7446 | ||
7447 | while (*p) | |
7448 | { | |
11cf8741 | 7449 | match = 0; |
c906108c | 7450 | p1 = p; |
c5aa993b | 7451 | |
5c44784c JM |
7452 | num = get_number_or_range (&p1); |
7453 | if (num == 0) | |
c5aa993b | 7454 | { |
5c44784c JM |
7455 | warning ("bad breakpoint number at or near '%s'", p); |
7456 | } | |
7457 | else | |
7458 | { | |
7459 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7460 | if (b->number == num) | |
7461 | { | |
7462 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7463 | match = 1; |
5c44784c JM |
7464 | function (b); |
7465 | if (related_breakpoint) | |
7466 | function (related_breakpoint); | |
11cf8741 | 7467 | break; |
5c44784c | 7468 | } |
11cf8741 JM |
7469 | if (match == 0) |
7470 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7471 | } |
c906108c SS |
7472 | p = p1; |
7473 | } | |
7474 | } | |
7475 | ||
1900040c MS |
7476 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7477 | If from_tty is nonzero, it prints a message to that effect, | |
7478 | which ends with a period (no newline). */ | |
7479 | ||
c906108c | 7480 | void |
fba45db2 | 7481 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7482 | { |
7483 | /* Never disable a watchpoint scope breakpoint; we want to | |
7484 | hit them when we leave scope so we can delete both the | |
7485 | watchpoint and its scope breakpoint at that time. */ | |
7486 | if (bpt->type == bp_watchpoint_scope) | |
7487 | return; | |
7488 | ||
c2c6d25f | 7489 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7490 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7491 | return; |
7492 | ||
b5de0fa7 | 7493 | bpt->enable_state = bp_disabled; |
c906108c | 7494 | |
9f60f21b | 7495 | check_duplicates (bpt); |
c906108c | 7496 | |
9a4105ab AC |
7497 | if (deprecated_modify_breakpoint_hook) |
7498 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7499 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7500 | } |
7501 | ||
c906108c | 7502 | static void |
fba45db2 | 7503 | disable_command (char *args, int from_tty) |
c906108c | 7504 | { |
52f0bd74 | 7505 | struct breakpoint *bpt; |
c906108c SS |
7506 | if (args == 0) |
7507 | ALL_BREAKPOINTS (bpt) | |
7508 | switch (bpt->type) | |
c5aa993b JM |
7509 | { |
7510 | case bp_none: | |
53a5351d JM |
7511 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7512 | bpt->number); | |
c5aa993b JM |
7513 | continue; |
7514 | case bp_breakpoint: | |
7515 | case bp_catch_load: | |
7516 | case bp_catch_unload: | |
7517 | case bp_catch_fork: | |
7518 | case bp_catch_vfork: | |
7519 | case bp_catch_exec: | |
7520 | case bp_catch_catch: | |
7521 | case bp_catch_throw: | |
7522 | case bp_hardware_breakpoint: | |
7523 | case bp_watchpoint: | |
7524 | case bp_hardware_watchpoint: | |
7525 | case bp_read_watchpoint: | |
7526 | case bp_access_watchpoint: | |
7527 | disable_breakpoint (bpt); | |
7528 | default: | |
7529 | continue; | |
7530 | } | |
c906108c SS |
7531 | else |
7532 | map_breakpoint_numbers (args, disable_breakpoint); | |
7533 | } | |
7534 | ||
7535 | static void | |
fba45db2 | 7536 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7537 | { |
c906108c SS |
7538 | int target_resources_ok, other_type_used; |
7539 | struct value *mark; | |
7540 | ||
7541 | if (bpt->type == bp_hardware_breakpoint) | |
7542 | { | |
7543 | int i; | |
c5aa993b | 7544 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7545 | target_resources_ok = |
7546 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7547 | i + 1, 0); | |
c906108c | 7548 | if (target_resources_ok == 0) |
c5aa993b | 7549 | error ("No hardware breakpoint support in the target."); |
c906108c | 7550 | else if (target_resources_ok < 0) |
c5aa993b | 7551 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7552 | } |
7553 | ||
0101ce28 | 7554 | if (bpt->pending) |
c906108c | 7555 | { |
0101ce28 | 7556 | if (bpt->enable_state != bp_enabled) |
c906108c | 7557 | { |
0101ce28 JJ |
7558 | /* When enabling a pending breakpoint, we need to check if the breakpoint |
7559 | is resolvable since shared libraries could have been loaded | |
7560 | after the breakpoint was disabled. */ | |
7561 | breakpoints_changed (); | |
7562 | if (resolve_pending_breakpoint (bpt) == GDB_RC_OK) | |
c906108c | 7563 | { |
0101ce28 | 7564 | delete_breakpoint (bpt); |
c906108c SS |
7565 | return; |
7566 | } | |
0101ce28 JJ |
7567 | bpt->enable_state = bp_enabled; |
7568 | bpt->disposition = disposition; | |
c906108c | 7569 | } |
0101ce28 JJ |
7570 | } |
7571 | else /* Not a pending breakpoint. */ | |
7572 | { | |
7573 | if (bpt->enable_state != bp_permanent) | |
7574 | bpt->enable_state = bp_enabled; | |
7575 | bpt->disposition = disposition; | |
7576 | check_duplicates (bpt); | |
7577 | breakpoints_changed (); | |
7578 | ||
7579 | if (bpt->type == bp_watchpoint || | |
7580 | bpt->type == bp_hardware_watchpoint || | |
7581 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7582 | bpt->type == bp_access_watchpoint) |
7583 | { | |
7789d0fa AC |
7584 | struct frame_id saved_frame_id; |
7585 | ||
7586 | saved_frame_id = get_frame_id (get_selected_frame ()); | |
0101ce28 JJ |
7587 | if (bpt->exp_valid_block != NULL) |
7588 | { | |
7589 | struct frame_info *fr = | |
7590 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7591 | if (fr == NULL) | |
7592 | { | |
7593 | printf_filtered ("\ | |
7594 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7595 | is valid is not currently in scope.\n", bpt->number); | |
7596 | bpt->enable_state = bp_disabled; | |
7597 | return; | |
7598 | } | |
0101ce28 JJ |
7599 | select_frame (fr); |
7600 | } | |
7601 | ||
7602 | value_free (bpt->val); | |
7603 | mark = value_mark (); | |
7604 | bpt->val = evaluate_expression (bpt->exp); | |
7605 | release_value (bpt->val); | |
7606 | if (VALUE_LAZY (bpt->val)) | |
7607 | value_fetch_lazy (bpt->val); | |
7608 | ||
7609 | if (bpt->type == bp_hardware_watchpoint || | |
7610 | bpt->type == bp_read_watchpoint || | |
7611 | bpt->type == bp_access_watchpoint) | |
c5aa993b | 7612 | { |
0101ce28 JJ |
7613 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7614 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7615 | ||
7616 | /* Hack around 'unused var' error for some targets here */ | |
7617 | (void) mem_cnt, i; | |
7618 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7619 | bpt->type, i + mem_cnt, other_type_used); | |
7620 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7621 | bp_watchpoint in the following condition */ | |
7622 | if (target_resources_ok < 0) | |
7623 | { | |
7624 | printf_filtered ("\ | |
c906108c SS |
7625 | Cannot enable watchpoint %d because target watch resources\n\ |
7626 | have been allocated for other watchpoints.\n", bpt->number); | |
0101ce28 JJ |
7627 | bpt->enable_state = bp_disabled; |
7628 | value_free_to_mark (mark); | |
7629 | return; | |
7630 | } | |
c5aa993b | 7631 | } |
0101ce28 | 7632 | |
7789d0fa | 7633 | select_frame (frame_find_by_id (saved_frame_id)); |
0101ce28 | 7634 | value_free_to_mark (mark); |
c5aa993b | 7635 | } |
c906108c | 7636 | } |
0101ce28 | 7637 | |
9a4105ab AC |
7638 | if (deprecated_modify_breakpoint_hook) |
7639 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7640 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7641 | } |
7642 | ||
7643 | void | |
fba45db2 | 7644 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7645 | { |
7646 | do_enable_breakpoint (bpt, bpt->disposition); | |
7647 | } | |
7648 | ||
7649 | /* The enable command enables the specified breakpoints (or all defined | |
7650 | breakpoints) so they once again become (or continue to be) effective | |
7651 | in stopping the inferior. */ | |
7652 | ||
c906108c | 7653 | static void |
fba45db2 | 7654 | enable_command (char *args, int from_tty) |
c906108c | 7655 | { |
52f0bd74 | 7656 | struct breakpoint *bpt; |
c906108c SS |
7657 | if (args == 0) |
7658 | ALL_BREAKPOINTS (bpt) | |
7659 | switch (bpt->type) | |
c5aa993b JM |
7660 | { |
7661 | case bp_none: | |
53a5351d JM |
7662 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7663 | bpt->number); | |
c5aa993b JM |
7664 | continue; |
7665 | case bp_breakpoint: | |
7666 | case bp_catch_load: | |
7667 | case bp_catch_unload: | |
7668 | case bp_catch_fork: | |
7669 | case bp_catch_vfork: | |
7670 | case bp_catch_exec: | |
7671 | case bp_catch_catch: | |
7672 | case bp_catch_throw: | |
7673 | case bp_hardware_breakpoint: | |
7674 | case bp_watchpoint: | |
7675 | case bp_hardware_watchpoint: | |
7676 | case bp_read_watchpoint: | |
7677 | case bp_access_watchpoint: | |
7678 | enable_breakpoint (bpt); | |
7679 | default: | |
7680 | continue; | |
7681 | } | |
c906108c SS |
7682 | else |
7683 | map_breakpoint_numbers (args, enable_breakpoint); | |
7684 | } | |
7685 | ||
7686 | static void | |
fba45db2 | 7687 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7688 | { |
b5de0fa7 | 7689 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7690 | } |
7691 | ||
c906108c | 7692 | static void |
fba45db2 | 7693 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7694 | { |
7695 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7696 | } | |
7697 | ||
7698 | static void | |
fba45db2 | 7699 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7700 | { |
b5de0fa7 | 7701 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7702 | } |
7703 | ||
c906108c | 7704 | static void |
fba45db2 | 7705 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7706 | { |
7707 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7708 | } | |
7709 | \f | |
fa8d40ab JJ |
7710 | static void |
7711 | set_breakpoint_cmd (char *args, int from_tty) | |
7712 | { | |
7713 | } | |
7714 | ||
7715 | static void | |
7716 | show_breakpoint_cmd (char *args, int from_tty) | |
7717 | { | |
7718 | } | |
7719 | ||
c906108c SS |
7720 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7721 | ||
7722 | struct symtabs_and_lines | |
fba45db2 | 7723 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7724 | { |
7725 | struct symtabs_and_lines sals; | |
7726 | if (string == 0) | |
7727 | error ("Empty line specification."); | |
7728 | if (default_breakpoint_valid) | |
7729 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7730 | default_breakpoint_symtab, |
7731 | default_breakpoint_line, | |
68219205 | 7732 | (char ***) NULL, NULL); |
c906108c SS |
7733 | else |
7734 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7735 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
7736 | if (*string) |
7737 | error ("Junk at end of line specification: %s", string); | |
7738 | return sals; | |
7739 | } | |
7740 | \f | |
7741 | void | |
fba45db2 | 7742 | _initialize_breakpoint (void) |
c906108c | 7743 | { |
fa8d40ab JJ |
7744 | static struct cmd_list_element *breakpoint_set_cmdlist; |
7745 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
7746 | struct cmd_list_element *c; |
7747 | ||
7748 | breakpoint_chain = 0; | |
7749 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7750 | before a breakpoint is set. */ | |
7751 | breakpoint_count = 0; | |
7752 | ||
7753 | add_com ("ignore", class_breakpoint, ignore_command, | |
7754 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7755 | Usage is `ignore N COUNT'."); | |
7756 | if (xdb_commands) | |
c5aa993b | 7757 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7758 | |
7759 | add_com ("commands", class_breakpoint, commands_command, | |
7760 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7761 | Give breakpoint number as argument after \"commands\".\n\ | |
7762 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7763 | The commands themselves follow starting on the next line.\n\ | |
7764 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7765 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7766 | then no output is printed when it is hit, except what the commands print."); | |
7767 | ||
7768 | add_com ("condition", class_breakpoint, condition_command, | |
7769 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7770 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7771 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7772 | |
c94fdfd0 EZ |
7773 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7774 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7775 | Like \"break\" except the breakpoint is only temporary,\n\ |
7776 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7777 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7778 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7779 | |
c94fdfd0 EZ |
7780 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7781 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7782 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7783 | some target hardware may not have this support."); | |
5ba2abeb | 7784 | set_cmd_completer (c, location_completer); |
c906108c | 7785 | |
c94fdfd0 EZ |
7786 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7787 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7788 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7789 | so it will be deleted when hit."); | |
5ba2abeb | 7790 | set_cmd_completer (c, location_completer); |
c906108c SS |
7791 | |
7792 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7793 | "Enable some breakpoints.\n\ | |
7794 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7795 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7796 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7797 | With a subcommand you can enable temporarily.", | |
7798 | &enablelist, "enable ", 1, &cmdlist); | |
7799 | if (xdb_commands) | |
c5aa993b JM |
7800 | add_com ("ab", class_breakpoint, enable_command, |
7801 | "Enable some breakpoints.\n\ | |
c906108c SS |
7802 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7803 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7804 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7805 | With a subcommand you can enable temporarily."); | |
7806 | ||
7807 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7808 | ||
7809 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7810 | "Enable some breakpoints.\n\ |
c906108c SS |
7811 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7812 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7813 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7814 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7815 | |
7816 | add_cmd ("once", no_class, enable_once_command, | |
7817 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7818 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7819 | &enablebreaklist); | |
7820 | ||
7821 | add_cmd ("delete", no_class, enable_delete_command, | |
7822 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7823 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7824 | &enablebreaklist); | |
7825 | ||
7826 | add_cmd ("delete", no_class, enable_delete_command, | |
7827 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7828 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7829 | &enablelist); | |
7830 | ||
7831 | add_cmd ("once", no_class, enable_once_command, | |
7832 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7833 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7834 | &enablelist); | |
7835 | ||
7836 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7837 | "Disable some breakpoints.\n\ |
c906108c SS |
7838 | Arguments are breakpoint numbers with spaces in between.\n\ |
7839 | To disable all breakpoints, give no argument.\n\ | |
7840 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7841 | &disablelist, "disable ", 1, &cmdlist); | |
7842 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7843 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7844 | if (xdb_commands) | |
c5aa993b JM |
7845 | add_com ("sb", class_breakpoint, disable_command, |
7846 | "Disable some breakpoints.\n\ | |
c906108c SS |
7847 | Arguments are breakpoint numbers with spaces in between.\n\ |
7848 | To disable all breakpoints, give no argument.\n\ | |
7849 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7850 | ||
7851 | add_cmd ("breakpoints", class_alias, disable_command, | |
7852 | "Disable some breakpoints.\n\ | |
7853 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7854 | To disable all breakpoints, give no argument.\n\ | |
7855 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7856 | This command may be abbreviated \"disable\".", | |
7857 | &disablelist); | |
7858 | ||
7859 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7860 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7861 | Arguments are breakpoint numbers with spaces in between.\n\ |
7862 | To delete all breakpoints, give no argument.\n\ | |
7863 | \n\ | |
7864 | Also a prefix command for deletion of other GDB objects.\n\ | |
7865 | The \"unset\" command is also an alias for \"delete\".", | |
7866 | &deletelist, "delete ", 1, &cmdlist); | |
7867 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7868 | if (xdb_commands) | |
7869 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7870 | "Delete some breakpoints.\n\ |
c906108c SS |
7871 | Arguments are breakpoint numbers with spaces in between.\n\ |
7872 | To delete all breakpoints, give no argument.\n"); | |
7873 | ||
7874 | add_cmd ("breakpoints", class_alias, delete_command, | |
7875 | "Delete some breakpoints or auto-display expressions.\n\ | |
7876 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7877 | To delete all breakpoints, give no argument.\n\ | |
7878 | This command may be abbreviated \"delete\".", | |
7879 | &deletelist); | |
7880 | ||
7881 | add_com ("clear", class_breakpoint, clear_command, | |
7882 | concat ("Clear breakpoint at specified line or function.\n\ | |
7883 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7884 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7885 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7886 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7887 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7888 | is executing in.\n\ |
7889 | \n\ | |
7890 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7891 | ||
c94fdfd0 EZ |
7892 | c = add_com ("break", class_breakpoint, break_command, |
7893 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7894 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7895 | If line number is specified, break at start of code for that line.\n\ | |
7896 | If function is specified, break at start of code for that function.\n\ | |
7897 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7898 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7899 | This is useful for breaking on return to a stack frame.\n\ |
7900 | \n\ | |
7901 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7902 | \n\ | |
7903 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7904 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7905 | |
c906108c SS |
7906 | add_com_alias ("b", "break", class_run, 1); |
7907 | add_com_alias ("br", "break", class_run, 1); | |
7908 | add_com_alias ("bre", "break", class_run, 1); | |
7909 | add_com_alias ("brea", "break", class_run, 1); | |
7910 | ||
502fd408 | 7911 | if (xdb_commands) |
c906108c SS |
7912 | { |
7913 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7914 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7915 | } |
7916 | ||
7917 | if (dbx_commands) | |
7918 | { | |
c5aa993b JM |
7919 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7920 | "Break in function/address or break at a line in the current file.", | |
7921 | &stoplist, "stop ", 1, &cmdlist); | |
7922 | add_cmd ("in", class_breakpoint, stopin_command, | |
7923 | "Break in function or address.\n", &stoplist); | |
7924 | add_cmd ("at", class_breakpoint, stopat_command, | |
7925 | "Break at a line in the current file.\n", &stoplist); | |
7926 | add_com ("status", class_info, breakpoints_info, | |
7927 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7928 | The \"Type\" column indicates one of:\n\ |
7929 | \tbreakpoint - normal breakpoint\n\ | |
7930 | \twatchpoint - watchpoint\n\ | |
7931 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7932 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7933 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7934 | address and file/line number respectively.\n\n", | |
c5aa993b | 7935 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7936 | are set to the address of the last breakpoint listed.\n\n\ |
7937 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7938 | breakpoint set.", NULL)); | |
7939 | } | |
7940 | ||
7941 | add_info ("breakpoints", breakpoints_info, | |
7942 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7943 | The \"Type\" column indicates one of:\n\ | |
7944 | \tbreakpoint - normal breakpoint\n\ | |
7945 | \twatchpoint - watchpoint\n\ | |
7946 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7947 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7948 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7949 | address and file/line number respectively.\n\n", | |
c5aa993b | 7950 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7951 | are set to the address of the last breakpoint listed.\n\n\ |
7952 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7953 | breakpoint set.", NULL)); | |
7954 | ||
7955 | if (xdb_commands) | |
c5aa993b JM |
7956 | add_com ("lb", class_breakpoint, breakpoints_info, |
7957 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7958 | The \"Type\" column indicates one of:\n\ |
7959 | \tbreakpoint - normal breakpoint\n\ | |
7960 | \twatchpoint - watchpoint\n\ | |
7961 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7962 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7963 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7964 | address and file/line number respectively.\n\n", | |
c5aa993b | 7965 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7966 | are set to the address of the last breakpoint listed.\n\n\ |
7967 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7968 | breakpoint set.", NULL)); | |
7969 | ||
c906108c | 7970 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7971 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7972 | The \"Type\" column indicates one of:\n\ |
7973 | \tbreakpoint - normal breakpoint\n\ | |
7974 | \twatchpoint - watchpoint\n\ | |
7975 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7976 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7977 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7978 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7979 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7980 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7981 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7982 | address and file/line number respectively.\n\n", | |
c5aa993b | 7983 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7984 | are set to the address of the last breakpoint listed.\n\n\ |
7985 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7986 | breakpoint set.", NULL), | |
7987 | &maintenanceinfolist); | |
7988 | ||
c906108c | 7989 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7990 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7991 | Raised signals may be caught:\n\ |
7992 | \tcatch signal - all signals\n\ | |
7993 | \tcatch signal <signame> - a particular signal\n\ | |
7994 | Raised exceptions may be caught:\n\ | |
7995 | \tcatch throw - all exceptions, when thrown\n\ | |
7996 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7997 | \tcatch catch - all exceptions, when caught\n\ | |
7998 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7999 | Thread or process events may be caught:\n\ | |
8000 | \tcatch thread_start - any threads, just after creation\n\ | |
8001 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8002 | \tcatch thread_join - any threads, just after joins\n\ | |
8003 | Process events may be caught:\n\ | |
8004 | \tcatch start - any processes, just after creation\n\ | |
8005 | \tcatch exit - any processes, just before expiration\n\ | |
8006 | \tcatch fork - calls to fork()\n\ | |
8007 | \tcatch vfork - calls to vfork()\n\ | |
8008 | \tcatch exec - calls to exec()\n\ | |
8009 | Dynamically-linked library events may be caught:\n\ | |
8010 | \tcatch load - loads of any library\n\ | |
8011 | \tcatch load <libname> - loads of a particular library\n\ | |
8012 | \tcatch unload - unloads of any library\n\ | |
8013 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8014 | The act of your program's execution stopping may also be caught:\n\ | |
8015 | \tcatch stop\n\n\ | |
8016 | C++ exceptions may be caught:\n\ | |
8017 | \tcatch throw - all exceptions, when thrown\n\ | |
8018 | \tcatch catch - all exceptions, when caught\n\ | |
8019 | \n\ | |
8020 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8021 | after a fork or vfork is caught.\n\n\ | |
8022 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 8023 | |
c906108c | 8024 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 8025 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
8026 | Args like \"catch\" command.\n\ |
8027 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8028 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
8029 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 8030 | |
c94fdfd0 EZ |
8031 | c = add_com ("watch", class_breakpoint, watch_command, |
8032 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
8033 | A watchpoint stops execution of your program whenever the value of\n\ |
8034 | an expression changes."); | |
5ba2abeb | 8035 | set_cmd_completer (c, location_completer); |
c906108c | 8036 | |
c94fdfd0 EZ |
8037 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
8038 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
8039 | A watchpoint stops execution of your program whenever the value of\n\ |
8040 | an expression is read."); | |
5ba2abeb | 8041 | set_cmd_completer (c, location_completer); |
c906108c | 8042 | |
c94fdfd0 EZ |
8043 | c = add_com ("awatch", class_breakpoint, awatch_command, |
8044 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
8045 | A watchpoint stops execution of your program whenever the value of\n\ |
8046 | an expression is either read or written."); | |
5ba2abeb | 8047 | set_cmd_completer (c, location_completer); |
c906108c SS |
8048 | |
8049 | add_info ("watchpoints", breakpoints_info, | |
8050 | "Synonym for ``info breakpoints''."); | |
8051 | ||
8052 | ||
8053 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
8054 | (char *) &can_use_hw_watchpoints, |
8055 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
8056 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8057 | such is available. (However, any hardware watchpoints that were\n\ | |
8058 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
8059 | hardware.)", | |
c5aa993b | 8060 | &setlist); |
c906108c SS |
8061 | add_show_from_set (c, &showlist); |
8062 | ||
8063 | can_use_hw_watchpoints = 1; | |
fa8d40ab JJ |
8064 | |
8065 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, "\ | |
8066 | Breakpoint specific settings\n\ | |
8067 | Configure various breakpoint-specific variables such as\n\ | |
8068 | pending breakpoint behavior", | |
8069 | &breakpoint_set_cmdlist, "set breakpoint ", | |
8070 | 0/*allow-unknown*/, &setlist); | |
8071 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, "\ | |
8072 | Breakpoint specific settings\n\ | |
8073 | Configure various breakpoint-specific variables such as\n\ | |
8074 | pending breakpoint behavior", | |
8075 | &breakpoint_show_cmdlist, "show breakpoint ", | |
8076 | 0/*allow-unknown*/, &showlist); | |
8077 | ||
6e1d7d6c AC |
8078 | add_setshow_auto_boolean_cmd ("pending", no_class, &pending_break_support, "\ |
8079 | Set debugger's behavior regarding pending breakpoints.\n\ | |
8080 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ | |
8081 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8082 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
8083 | user-query to see if a pending breakpoint should be created.","\ | |
8084 | Show debugger's behavior regarding pending breakpoints.\n\ | |
8085 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ | |
8086 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8087 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
8088 | user-query to see if a pending breakpoint should be created.", | |
8089 | NULL, NULL, | |
8090 | &breakpoint_set_cmdlist, | |
8091 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8092 | |
8093 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
c906108c | 8094 | } |