]>
Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* Everything about breakpoints, for GDB. |
2 | Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 | |
c5aa993b | 3 | Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "expression.h" | |
29 | #include "gdbcore.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "value.h" | |
32 | #include "command.h" | |
33 | #include "inferior.h" | |
34 | #include "gdbthread.h" | |
35 | #include "target.h" | |
36 | #include "language.h" | |
37 | #include "gdb_string.h" | |
38 | #include "demangle.h" | |
39 | #include "annotate.h" | |
40 | #include "symfile.h" | |
41 | #include "objfiles.h" | |
8b93c638 JM |
42 | #ifdef UI_OUT |
43 | #include "ui-out.h" | |
44 | #endif | |
c906108c | 45 | |
104c1213 JM |
46 | #include "gdb-events.h" |
47 | ||
c906108c SS |
48 | /* Prototypes for local functions. */ |
49 | ||
c2c6d25f JM |
50 | static void until_break_command_continuation (struct continuation_arg *arg); |
51 | ||
c906108c SS |
52 | static void |
53 | catch_command_1 PARAMS ((char *, int, int)); | |
54 | ||
55 | static void | |
56 | enable_delete_command PARAMS ((char *, int)); | |
57 | ||
58 | static void | |
59 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
60 | ||
61 | static void | |
62 | enable_once_command PARAMS ((char *, int)); | |
63 | ||
64 | static void | |
65 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
66 | ||
67 | static void | |
68 | disable_command PARAMS ((char *, int)); | |
69 | ||
70 | static void | |
71 | enable_command PARAMS ((char *, int)); | |
72 | ||
73 | static void | |
c5aa993b | 74 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); |
c906108c SS |
75 | |
76 | static void | |
77 | ignore_command PARAMS ((char *, int)); | |
78 | ||
79 | static int breakpoint_re_set_one PARAMS ((PTR)); | |
80 | ||
81 | static void | |
82 | clear_command PARAMS ((char *, int)); | |
83 | ||
84 | static void | |
85 | catch_command PARAMS ((char *, int)); | |
86 | ||
87 | static void | |
88 | handle_gnu_4_16_catch_command PARAMS ((char *, int, int)); | |
89 | ||
90 | static struct symtabs_and_lines | |
91 | get_catch_sals PARAMS ((int)); | |
92 | ||
93 | static void | |
94 | watch_command PARAMS ((char *, int)); | |
95 | ||
96 | static int | |
97 | can_use_hardware_watchpoint PARAMS ((struct value *)); | |
98 | ||
7a292a7a SS |
99 | static void break_at_finish_command PARAMS ((char *, int)); |
100 | static void break_at_finish_at_depth_command PARAMS ((char *, int)); | |
101 | ||
c906108c SS |
102 | void |
103 | tbreak_command PARAMS ((char *, int)); | |
104 | ||
7a292a7a SS |
105 | static void tbreak_at_finish_command PARAMS ((char *, int)); |
106 | ||
c906108c SS |
107 | static void |
108 | break_command_1 PARAMS ((char *, int, int)); | |
109 | ||
110 | static void | |
111 | mention PARAMS ((struct breakpoint *)); | |
112 | ||
113 | struct breakpoint * | |
c5aa993b | 114 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); |
c906108c SS |
115 | |
116 | static void | |
117 | check_duplicates PARAMS ((CORE_ADDR, asection *)); | |
118 | ||
119 | static void | |
120 | describe_other_breakpoints PARAMS ((CORE_ADDR, asection *)); | |
121 | ||
122 | static void | |
123 | breakpoints_info PARAMS ((char *, int)); | |
124 | ||
125 | static void | |
126 | breakpoint_1 PARAMS ((int, int)); | |
127 | ||
128 | static bpstat | |
c5aa993b | 129 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); |
c906108c SS |
130 | |
131 | static int breakpoint_cond_eval PARAMS ((PTR)); | |
132 | ||
133 | static void | |
134 | cleanup_executing_breakpoints PARAMS ((PTR)); | |
135 | ||
136 | static void | |
137 | commands_command PARAMS ((char *, int)); | |
138 | ||
139 | static void | |
140 | condition_command PARAMS ((char *, int)); | |
141 | ||
142 | static int | |
5c44784c | 143 | get_number_trailer PARAMS ((char **, int)); |
c906108c SS |
144 | |
145 | void | |
146 | set_breakpoint_count PARAMS ((int)); | |
147 | ||
148 | #if 0 | |
149 | static struct breakpoint * | |
c5aa993b | 150 | create_temp_exception_breakpoint PARAMS ((CORE_ADDR)); |
c906108c SS |
151 | #endif |
152 | ||
c5aa993b JM |
153 | typedef enum |
154 | { | |
155 | mark_inserted, | |
156 | mark_uninserted | |
157 | } | |
158 | insertion_state_t; | |
c906108c SS |
159 | |
160 | static int | |
161 | remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t)); | |
162 | ||
e514a9d6 JM |
163 | static enum print_stop_action print_it_typical PARAMS ((bpstat)); |
164 | ||
165 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 166 | |
c5aa993b JM |
167 | typedef struct |
168 | { | |
169 | enum exception_event_kind kind; | |
170 | int enable; | |
171 | } | |
172 | args_for_catchpoint_enable; | |
c906108c SS |
173 | |
174 | static int watchpoint_check PARAMS ((PTR)); | |
175 | ||
176 | static int cover_target_enable_exception_callback PARAMS ((PTR)); | |
177 | ||
c906108c SS |
178 | static void maintenance_info_breakpoints PARAMS ((char *, int)); |
179 | ||
180 | #ifdef GET_LONGJMP_TARGET | |
181 | static void create_longjmp_breakpoint PARAMS ((char *)); | |
182 | #endif | |
183 | ||
184 | static int hw_breakpoint_used_count PARAMS ((void)); | |
185 | ||
186 | static int hw_watchpoint_used_count PARAMS ((enum bptype, int *)); | |
187 | ||
188 | static void hbreak_command PARAMS ((char *, int)); | |
189 | ||
190 | static void thbreak_command PARAMS ((char *, int)); | |
191 | ||
192 | static void watch_command_1 PARAMS ((char *, int, int)); | |
193 | ||
194 | static void rwatch_command PARAMS ((char *, int)); | |
195 | ||
196 | static void awatch_command PARAMS ((char *, int)); | |
197 | ||
198 | static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); | |
199 | ||
53a5351d JM |
200 | static void solib_load_unload_1 PARAMS ((char *hookname, |
201 | int tempflag, | |
202 | char *dll_pathname, | |
203 | char *cond_string, | |
204 | enum bptype bp_kind)); | |
7a292a7a | 205 | |
53a5351d JM |
206 | static void create_fork_vfork_event_catchpoint PARAMS ((int tempflag, |
207 | char *cond_string, | |
208 | enum bptype bp_kind)); | |
7a292a7a | 209 | |
53a5351d JM |
210 | static void break_at_finish_at_depth_command_1 PARAMS ((char *arg, |
211 | int flag, | |
212 | int from_tty)); | |
7a292a7a | 213 | |
53a5351d JM |
214 | static void break_at_finish_command_1 PARAMS ((char *arg, |
215 | int flag, | |
216 | int from_tty)); | |
7a292a7a SS |
217 | |
218 | static void stop_command PARAMS ((char *arg, int from_tty)); | |
219 | ||
220 | static void stopin_command PARAMS ((char *arg, int from_tty)); | |
221 | ||
222 | static void stopat_command PARAMS ((char *arg, int from_tty)); | |
223 | ||
224 | static char *ep_find_event_name_end PARAMS ((char *arg)); | |
225 | ||
226 | static char *ep_parse_optional_if_clause PARAMS ((char **arg)); | |
227 | ||
228 | static char *ep_parse_optional_filename PARAMS ((char **arg)); | |
229 | ||
e514a9d6 | 230 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
53a5351d JM |
231 | static void catch_exec_command_1 PARAMS ((char *arg, int tempflag, |
232 | int from_tty)); | |
e514a9d6 | 233 | #endif |
7a292a7a | 234 | |
53a5351d JM |
235 | static void create_exception_catchpoint |
236 | PARAMS ((int tempflag, char *cond_string, | |
237 | enum exception_event_kind ex_event, | |
238 | struct symtab_and_line * sal)); | |
7a292a7a | 239 | |
53a5351d JM |
240 | static void catch_exception_command_1 |
241 | PARAMS ((enum exception_event_kind ex_event, | |
242 | char *arg, int tempflag, int from_tty)); | |
7a292a7a SS |
243 | |
244 | static void tcatch_command PARAMS ((char *arg, int from_tty)); | |
245 | ||
246 | static void ep_skip_leading_whitespace PARAMS ((char **s)); | |
247 | ||
c906108c SS |
248 | /* Prototypes for exported functions. */ |
249 | ||
250 | static void | |
251 | awatch_command PARAMS ((char *, int)); | |
252 | ||
253 | static void | |
254 | do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); | |
255 | ||
256 | /* If FALSE, gdb will not use hardware support for watchpoints, even | |
257 | if such is available. */ | |
258 | static int can_use_hw_watchpoints; | |
259 | ||
c906108c SS |
260 | void _initialize_breakpoint PARAMS ((void)); |
261 | ||
262 | void set_breakpoint_count PARAMS ((int)); | |
263 | ||
c5aa993b | 264 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 265 | |
c906108c | 266 | static int internal_breakpoint_number = -1; |
c906108c SS |
267 | |
268 | /* Are we executing breakpoint commands? */ | |
269 | static int executing_breakpoint_commands; | |
270 | ||
271 | /* Walk the following statement or block through all breakpoints. | |
272 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
273 | breakpoint. */ | |
274 | ||
5c44784c | 275 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 276 | |
5c44784c JM |
277 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
278 | for (B = breakpoint_chain; \ | |
279 | B ? (TMP=B->next, 1): 0; \ | |
280 | B = TMP) | |
c906108c SS |
281 | |
282 | /* True if SHIFT_INST_REGS defined, false otherwise. */ | |
283 | ||
284 | int must_shift_inst_regs = | |
285 | #if defined(SHIFT_INST_REGS) | |
286 | 1 | |
287 | #else | |
288 | 0 | |
289 | #endif | |
c5aa993b | 290 | ; |
c906108c SS |
291 | |
292 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ | |
293 | ||
294 | int show_breakpoint_hit_counts = 1; | |
295 | ||
296 | /* Chain of all breakpoints defined. */ | |
297 | ||
298 | struct breakpoint *breakpoint_chain; | |
299 | ||
300 | /* Number of last breakpoint made. */ | |
301 | ||
302 | int breakpoint_count; | |
303 | ||
c5aa993b JM |
304 | /* Pointer to current exception event record */ |
305 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
306 | |
307 | /* Indicator of whether exception catchpoints should be nuked | |
308 | between runs of a program */ | |
309 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 310 | |
c906108c SS |
311 | /* Indicator of when exception catchpoints set-up should be |
312 | reinitialized -- e.g. when program is re-run */ | |
313 | int exception_support_initialized = 0; | |
314 | ||
315 | /* This function returns a pointer to the string representation of the | |
316 | pathname of the dynamically-linked library that has just been | |
317 | loaded. | |
318 | ||
319 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
320 | or undefined results are guaranteed. | |
321 | ||
322 | This string's contents are only valid immediately after the | |
323 | inferior has stopped in the dynamic linker hook, and becomes | |
324 | invalid as soon as the inferior is continued. Clients should make | |
325 | a copy of this string if they wish to continue the inferior and | |
326 | then access the string. */ | |
327 | ||
328 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
329 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
330 | #endif | |
331 | ||
332 | /* This function returns a pointer to the string representation of the | |
333 | pathname of the dynamically-linked library that has just been | |
334 | unloaded. | |
335 | ||
336 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
337 | TRUE, or undefined results are guaranteed. | |
338 | ||
339 | This string's contents are only valid immediately after the | |
340 | inferior has stopped in the dynamic linker hook, and becomes | |
341 | invalid as soon as the inferior is continued. Clients should make | |
342 | a copy of this string if they wish to continue the inferior and | |
343 | then access the string. */ | |
344 | ||
345 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
346 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
347 | #endif | |
348 | ||
349 | /* This function is called by the "catch load" command. It allows the | |
350 | debugger to be notified by the dynamic linker when a specified | |
351 | library file (or any library file, if filename is NULL) is loaded. */ | |
352 | ||
353 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
354 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
355 | error ("catch of library loads not yet implemented on this platform") | |
356 | #endif | |
357 | ||
358 | /* This function is called by the "catch unload" command. It allows | |
359 | the debugger to be notified by the dynamic linker when a specified | |
360 | library file (or any library file, if filename is NULL) is | |
361 | unloaded. */ | |
362 | ||
363 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
364 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
365 | error ("catch of library unloads not yet implemented on this platform") | |
366 | #endif | |
367 | ||
368 | /* Set breakpoint count to NUM. */ | |
369 | ||
370 | void | |
371 | set_breakpoint_count (num) | |
372 | int num; | |
373 | { | |
374 | breakpoint_count = num; | |
375 | set_internalvar (lookup_internalvar ("bpnum"), | |
376 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
377 | } | |
378 | ||
379 | /* Used in run_command to zero the hit count when a new run starts. */ | |
380 | ||
381 | void | |
382 | clear_breakpoint_hit_counts () | |
383 | { | |
384 | struct breakpoint *b; | |
385 | ||
386 | ALL_BREAKPOINTS (b) | |
387 | b->hit_count = 0; | |
388 | } | |
389 | ||
390 | /* Default address, symtab and line to put a breakpoint at | |
391 | for "break" command with no arg. | |
392 | if default_breakpoint_valid is zero, the other three are | |
393 | not valid, and "break" with no arg is an error. | |
394 | ||
395 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
396 | ||
397 | int default_breakpoint_valid; | |
398 | CORE_ADDR default_breakpoint_address; | |
399 | struct symtab *default_breakpoint_symtab; | |
400 | int default_breakpoint_line; | |
401 | \f | |
402 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
403 | Advance *PP after the string and any trailing whitespace. | |
404 | ||
405 | Currently the string can either be a number or "$" followed by the name | |
406 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
407 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
408 | ||
409 | TRAILER is a character which can be found after the number; most | |
410 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 411 | static int |
5c44784c | 412 | get_number_trailer (pp, trailer) |
c906108c | 413 | char **pp; |
5c44784c | 414 | int trailer; |
c906108c | 415 | { |
5c44784c | 416 | int retval = 0; /* default */ |
c906108c SS |
417 | char *p = *pp; |
418 | ||
419 | if (p == NULL) | |
420 | /* Empty line means refer to the last breakpoint. */ | |
421 | return breakpoint_count; | |
422 | else if (*p == '$') | |
423 | { | |
424 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 425 | to pass to lookup_internalvar(). */ |
c906108c SS |
426 | char *varname; |
427 | char *start = ++p; | |
428 | value_ptr val; | |
429 | ||
430 | while (isalnum (*p) || *p == '_') | |
431 | p++; | |
432 | varname = (char *) alloca (p - start + 1); | |
433 | strncpy (varname, start, p - start); | |
434 | varname[p - start] = '\0'; | |
435 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
436 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
437 | retval = (int) value_as_long (val); | |
438 | else | |
439 | { | |
440 | printf_filtered ("Convenience variable must have integer value.\n"); | |
441 | retval = 0; | |
442 | } | |
c906108c SS |
443 | } |
444 | else | |
445 | { | |
446 | if (*p == '-') | |
447 | ++p; | |
448 | while (*p >= '0' && *p <= '9') | |
449 | ++p; | |
450 | if (p == *pp) | |
451 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
452 | { |
453 | /* Skip non-numeric token */ | |
454 | while (*p && !isspace((int) *p)) | |
455 | ++p; | |
456 | /* Return zero, which caller must interpret as error. */ | |
457 | retval = 0; | |
458 | } | |
459 | else | |
460 | retval = atoi (*pp); | |
461 | } | |
462 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
463 | { | |
464 | /* Trailing junk: return 0 and let caller print error msg. */ | |
465 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
466 | ++p; | |
467 | retval = 0; | |
c906108c | 468 | } |
c906108c SS |
469 | while (isspace (*p)) |
470 | p++; | |
471 | *pp = p; | |
472 | return retval; | |
473 | } | |
5c44784c | 474 | |
11cf8741 | 475 | |
5c44784c JM |
476 | /* Like get_number_trailer, but don't allow a trailer. */ |
477 | int | |
478 | get_number (pp) | |
479 | char **pp; | |
480 | { | |
481 | return get_number_trailer (pp, '\0'); | |
482 | } | |
483 | ||
484 | /* Parse a number or a range. | |
485 | * A number will be of the form handled by get_number. | |
486 | * A range will be of the form <number1> - <number2>, and | |
487 | * will represent all the integers between number1 and number2, | |
488 | * inclusive. | |
489 | * | |
490 | * While processing a range, this fuction is called iteratively; | |
491 | * At each call it will return the next value in the range. | |
492 | * | |
493 | * At the beginning of parsing a range, the char pointer PP will | |
494 | * be advanced past <number1> and left pointing at the '-' token. | |
495 | * Subsequent calls will not advance the pointer until the range | |
496 | * is completed. The call that completes the range will advance | |
497 | * pointer PP past <number2>. | |
498 | */ | |
499 | ||
500 | int | |
501 | get_number_or_range (pp) | |
502 | char **pp; | |
503 | { | |
504 | static int last_retval, end_value; | |
505 | static char *end_ptr; | |
506 | static int in_range = 0; | |
507 | ||
508 | if (**pp != '-') | |
509 | { | |
510 | /* Default case: pp is pointing either to a solo number, | |
511 | or to the first number of a range. */ | |
512 | last_retval = get_number_trailer (pp, '-'); | |
513 | if (**pp == '-') | |
514 | { | |
515 | char **temp; | |
516 | ||
517 | /* This is the start of a range (<number1> - <number2>). | |
518 | Skip the '-', parse and remember the second number, | |
519 | and also remember the end of the final token. */ | |
520 | ||
521 | temp = &end_ptr; | |
522 | end_ptr = *pp + 1; | |
523 | while (isspace ((int) *end_ptr)) | |
524 | end_ptr++; /* skip white space */ | |
525 | end_value = get_number (temp); | |
526 | if (end_value < last_retval) | |
527 | { | |
528 | error ("inverted range"); | |
529 | } | |
530 | else if (end_value == last_retval) | |
531 | { | |
532 | /* degenerate range (number1 == number2). Advance the | |
533 | token pointer so that the range will be treated as a | |
534 | single number. */ | |
535 | *pp = end_ptr; | |
536 | } | |
537 | else | |
538 | in_range = 1; | |
539 | } | |
540 | } | |
541 | else if (! in_range) | |
542 | error ("negative value"); | |
543 | else | |
544 | { | |
545 | /* pp points to the '-' that betokens a range. All | |
546 | number-parsing has already been done. Return the next | |
547 | integer value (one greater than the saved previous value). | |
548 | Do not advance the token pointer 'pp' until the end of range | |
549 | is reached. */ | |
550 | ||
551 | if (++last_retval == end_value) | |
552 | { | |
553 | /* End of range reached; advance token pointer. */ | |
554 | *pp = end_ptr; | |
555 | in_range = 0; | |
556 | } | |
557 | } | |
558 | return last_retval; | |
559 | } | |
560 | ||
561 | ||
c906108c SS |
562 | \f |
563 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
564 | ||
565 | static void | |
566 | condition_command (arg, from_tty) | |
567 | char *arg; | |
568 | int from_tty; | |
569 | { | |
570 | register struct breakpoint *b; | |
571 | char *p; | |
572 | register int bnum; | |
573 | ||
574 | if (arg == 0) | |
575 | error_no_arg ("breakpoint number"); | |
576 | ||
577 | p = arg; | |
578 | bnum = get_number (&p); | |
5c44784c JM |
579 | if (bnum == 0) |
580 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
581 | |
582 | ALL_BREAKPOINTS (b) | |
583 | if (b->number == bnum) | |
c5aa993b JM |
584 | { |
585 | if (b->cond) | |
586 | { | |
587 | free ((PTR) b->cond); | |
588 | b->cond = 0; | |
589 | } | |
590 | if (b->cond_string != NULL) | |
591 | free ((PTR) b->cond_string); | |
c906108c | 592 | |
c5aa993b JM |
593 | if (*p == 0) |
594 | { | |
595 | b->cond = 0; | |
596 | b->cond_string = NULL; | |
597 | if (from_tty) | |
598 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
599 | } | |
600 | else | |
601 | { | |
602 | arg = p; | |
603 | /* I don't know if it matters whether this is the string the user | |
604 | typed in or the decompiled expression. */ | |
605 | b->cond_string = savestring (arg, strlen (arg)); | |
606 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); | |
607 | if (*arg) | |
608 | error ("Junk at end of expression"); | |
609 | } | |
610 | breakpoints_changed (); | |
611 | return; | |
612 | } | |
c906108c SS |
613 | |
614 | error ("No breakpoint number %d.", bnum); | |
615 | } | |
616 | ||
617 | /* ARGSUSED */ | |
618 | static void | |
619 | commands_command (arg, from_tty) | |
620 | char *arg; | |
621 | int from_tty; | |
622 | { | |
623 | register struct breakpoint *b; | |
624 | char *p; | |
625 | register int bnum; | |
626 | struct command_line *l; | |
627 | ||
628 | /* If we allowed this, we would have problems with when to | |
629 | free the storage, if we change the commands currently | |
630 | being read from. */ | |
631 | ||
632 | if (executing_breakpoint_commands) | |
633 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
634 | ||
635 | p = arg; | |
636 | bnum = get_number (&p); | |
5c44784c | 637 | |
c906108c SS |
638 | if (p && *p) |
639 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 640 | |
c906108c SS |
641 | ALL_BREAKPOINTS (b) |
642 | if (b->number == bnum) | |
c5aa993b JM |
643 | { |
644 | char tmpbuf[128]; | |
53a5351d JM |
645 | sprintf (tmpbuf, |
646 | "Type commands for when breakpoint %d is hit, one per line.", | |
647 | bnum); | |
c5aa993b JM |
648 | l = read_command_lines (tmpbuf, from_tty); |
649 | free_command_lines (&b->commands); | |
650 | b->commands = l; | |
651 | breakpoints_changed (); | |
652 | return; | |
653 | } | |
c906108c SS |
654 | error ("No breakpoint number %d.", bnum); |
655 | } | |
656 | \f | |
657 | /* Like target_read_memory() but if breakpoints are inserted, return | |
658 | the shadow contents instead of the breakpoints themselves. | |
659 | ||
660 | Read "memory data" from whatever target or inferior we have. | |
661 | Returns zero if successful, errno value if not. EIO is used | |
662 | for address out of bounds. If breakpoints are inserted, returns | |
663 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
664 | ||
665 | int | |
666 | read_memory_nobpt (memaddr, myaddr, len) | |
667 | CORE_ADDR memaddr; | |
668 | char *myaddr; | |
669 | unsigned len; | |
670 | { | |
671 | int status; | |
672 | struct breakpoint *b; | |
673 | CORE_ADDR bp_addr = 0; | |
674 | int bp_size = 0; | |
675 | ||
676 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
677 | /* No breakpoints on this machine. */ | |
678 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 679 | |
c906108c | 680 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
681 | { |
682 | if (b->type == bp_none) | |
53a5351d JM |
683 | warning ("reading through apparently deleted breakpoint #%d?", |
684 | b->number); | |
c5aa993b JM |
685 | |
686 | /* memory breakpoint? */ | |
687 | if (b->type == bp_watchpoint | |
688 | || b->type == bp_hardware_watchpoint | |
689 | || b->type == bp_read_watchpoint | |
690 | || b->type == bp_access_watchpoint) | |
691 | continue; | |
692 | /* bp in memory? */ | |
693 | if (!b->inserted) | |
694 | continue; | |
695 | /* Addresses and length of the part of the breakpoint that | |
696 | we need to copy. */ | |
697 | /* XXXX The m68k, sh and h8300 have different local and remote | |
698 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
699 | correctly determine the breakpoints memory address and size | |
700 | for these targets. */ | |
701 | bp_addr = b->address; | |
702 | bp_size = 0; | |
703 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
704 | continue; | |
705 | if (bp_size == 0) | |
706 | /* bp isn't valid */ | |
707 | continue; | |
708 | if (bp_addr + bp_size <= memaddr) | |
709 | /* The breakpoint is entirely before the chunk of memory we | |
710 | are reading. */ | |
711 | continue; | |
712 | if (bp_addr >= memaddr + len) | |
713 | /* The breakpoint is entirely after the chunk of memory we are | |
714 | reading. */ | |
715 | continue; | |
716 | /* Copy the breakpoint from the shadow contents, and recurse for | |
717 | the things before and after. */ | |
c906108c | 718 | { |
c5aa993b JM |
719 | /* Offset within shadow_contents. */ |
720 | int bptoffset = 0; | |
c906108c | 721 | |
c5aa993b JM |
722 | if (bp_addr < memaddr) |
723 | { | |
724 | /* Only copy the second part of the breakpoint. */ | |
725 | bp_size -= memaddr - bp_addr; | |
726 | bptoffset = memaddr - bp_addr; | |
727 | bp_addr = memaddr; | |
728 | } | |
729 | ||
730 | if (bp_addr + bp_size > memaddr + len) | |
731 | { | |
732 | /* Only copy the first part of the breakpoint. */ | |
733 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
734 | } | |
735 | ||
736 | memcpy (myaddr + bp_addr - memaddr, | |
737 | b->shadow_contents + bptoffset, bp_size); | |
738 | ||
739 | if (bp_addr > memaddr) | |
740 | { | |
741 | /* Copy the section of memory before the breakpoint. */ | |
742 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
743 | if (status != 0) | |
744 | return status; | |
745 | } | |
746 | ||
747 | if (bp_addr + bp_size < memaddr + len) | |
748 | { | |
749 | /* Copy the section of memory after the breakpoint. */ | |
750 | status = read_memory_nobpt | |
751 | (bp_addr + bp_size, | |
752 | myaddr + bp_addr + bp_size - memaddr, | |
753 | memaddr + len - (bp_addr + bp_size)); | |
754 | if (status != 0) | |
755 | return status; | |
756 | } | |
757 | return 0; | |
c906108c | 758 | } |
c5aa993b | 759 | } |
c906108c SS |
760 | /* Nothing overlaps. Just call read_memory_noerr. */ |
761 | return target_read_memory (memaddr, myaddr, len); | |
762 | } | |
c906108c | 763 | \f |
c5aa993b | 764 | |
c906108c SS |
765 | /* insert_breakpoints is used when starting or continuing the program. |
766 | remove_breakpoints is used when the program stops. | |
767 | Both return zero if successful, | |
768 | or an `errno' value if could not write the inferior. */ | |
769 | ||
770 | int | |
771 | insert_breakpoints () | |
772 | { | |
773 | register struct breakpoint *b, *temp; | |
53a5351d | 774 | int return_val = 0; /* return success code. */ |
c906108c SS |
775 | int val = 0; |
776 | int disabled_breaks = 0; | |
777 | ||
778 | static char message1[] = "Error inserting catchpoint %d:\n"; | |
779 | static char message[sizeof (message1) + 30]; | |
780 | ||
781 | ||
782 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 783 | { |
c2c6d25f JM |
784 | if (b->enable == permanent) |
785 | /* Permanent breakpoints cannot be inserted or removed. */ | |
786 | continue; | |
787 | else if (b->type != bp_watchpoint | |
c5aa993b JM |
788 | && b->type != bp_hardware_watchpoint |
789 | && b->type != bp_read_watchpoint | |
790 | && b->type != bp_access_watchpoint | |
791 | && b->type != bp_catch_fork | |
792 | && b->type != bp_catch_vfork | |
793 | && b->type != bp_catch_exec | |
794 | && b->type != bp_catch_throw | |
795 | && b->type != bp_catch_catch | |
796 | && b->enable != disabled | |
797 | && b->enable != shlib_disabled | |
798 | && b->enable != call_disabled | |
799 | && !b->inserted | |
800 | && !b->duplicate) | |
801 | { | |
802 | if (b->type == bp_hardware_breakpoint) | |
803 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
804 | else | |
805 | { | |
806 | /* Check to see if breakpoint is in an overlay section; | |
807 | if so, we should set the breakpoint at the LMA address. | |
808 | Only if the section is currently mapped should we ALSO | |
809 | set a break at the VMA address. */ | |
810 | if (overlay_debugging && b->section && | |
811 | section_is_overlay (b->section)) | |
812 | { | |
813 | CORE_ADDR addr; | |
814 | ||
815 | addr = overlay_unmapped_address (b->address, b->section); | |
816 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
817 | /* This would be the time to check val, to see if the | |
818 | breakpoint write to the load address succeeded. | |
819 | However, this might be an ordinary occurrance, eg. if | |
820 | the unmapped overlay is in ROM. */ | |
821 | val = 0; /* in case unmapped address failed */ | |
822 | if (section_is_mapped (b->section)) | |
823 | val = target_insert_breakpoint (b->address, | |
824 | b->shadow_contents); | |
825 | } | |
826 | else /* ordinary (non-overlay) address */ | |
827 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
828 | } | |
829 | if (val) | |
830 | { | |
831 | /* Can't set the breakpoint. */ | |
c906108c | 832 | #if defined (DISABLE_UNSETTABLE_BREAK) |
c5aa993b JM |
833 | if (DISABLE_UNSETTABLE_BREAK (b->address)) |
834 | { | |
835 | /* See also: disable_breakpoints_in_shlibs. */ | |
836 | val = 0; | |
837 | b->enable = shlib_disabled; | |
838 | if (!disabled_breaks) | |
839 | { | |
840 | target_terminal_ours_for_output (); | |
53a5351d JM |
841 | warning ("Cannot insert breakpoint %d:", b->number); |
842 | warning ("Temporarily disabling shared library breakpoints:"); | |
c5aa993b JM |
843 | } |
844 | disabled_breaks = 1; | |
53a5351d | 845 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
846 | } |
847 | else | |
c906108c | 848 | #endif |
c5aa993b JM |
849 | { |
850 | target_terminal_ours_for_output (); | |
53a5351d | 851 | warning ("Cannot insert breakpoint %d:", b->number); |
c906108c | 852 | #ifdef ONE_PROCESS_WRITETEXT |
53a5351d | 853 | warning ("The same program may be running in another process."); |
c906108c | 854 | #endif |
53a5351d | 855 | memory_error (val, b->address); /* which bombs us out */ |
c5aa993b JM |
856 | } |
857 | } | |
858 | else | |
859 | b->inserted = 1; | |
53a5351d JM |
860 | |
861 | if (val) | |
862 | return_val = val; /* remember failure */ | |
c5aa993b | 863 | } |
c906108c | 864 | else if (ep_is_exception_catchpoint (b) |
c5aa993b JM |
865 | && b->enable != disabled |
866 | && b->enable != shlib_disabled | |
867 | && b->enable != call_disabled | |
868 | && !b->inserted | |
869 | && !b->duplicate) | |
c906108c SS |
870 | |
871 | { | |
c5aa993b JM |
872 | /* If we get here, we must have a callback mechanism for exception |
873 | events -- with g++ style embedded label support, we insert | |
874 | ordinary breakpoints and not catchpoints. */ | |
53a5351d JM |
875 | /* Format possible error message */ |
876 | sprintf (message, message1, b->number); | |
c5aa993b JM |
877 | |
878 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
879 | if (val) | |
880 | { | |
881 | /* Couldn't set breakpoint for some reason */ | |
882 | target_terminal_ours_for_output (); | |
53a5351d JM |
883 | warning ("Cannot insert catchpoint %d; disabling it.", |
884 | b->number); | |
c5aa993b JM |
885 | b->enable = disabled; |
886 | } | |
887 | else | |
888 | { | |
889 | /* Bp set, now make sure callbacks are enabled */ | |
c906108c | 890 | int val; |
c5aa993b | 891 | args_for_catchpoint_enable args; |
53a5351d JM |
892 | args.kind = b->type == bp_catch_catch ? |
893 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
894 | args.enable = 1; |
895 | val = catch_errors (cover_target_enable_exception_callback, | |
896 | &args, | |
897 | message, RETURN_MASK_ALL); | |
898 | if (val != 0 && val != -1) | |
899 | { | |
900 | b->inserted = 1; | |
901 | } | |
c5aa993b | 902 | /* Check if something went wrong; val == 0 can be ignored */ |
c906108c SS |
903 | if (val == -1) |
904 | { | |
c5aa993b | 905 | /* something went wrong */ |
c906108c | 906 | target_terminal_ours_for_output (); |
53a5351d JM |
907 | warning ("Cannot insert catchpoint %d; disabling it.", |
908 | b->number); | |
c906108c SS |
909 | b->enable = disabled; |
910 | } | |
c5aa993b | 911 | } |
53a5351d JM |
912 | |
913 | if (val) | |
914 | return_val = val; /* remember failure */ | |
c906108c SS |
915 | } |
916 | ||
c5aa993b JM |
917 | else if ((b->type == bp_hardware_watchpoint || |
918 | b->type == bp_read_watchpoint || | |
919 | b->type == bp_access_watchpoint) | |
920 | && b->enable == enabled | |
921 | && !b->inserted | |
922 | && !b->duplicate) | |
923 | { | |
924 | struct frame_info *saved_frame; | |
925 | int saved_level, within_current_scope; | |
926 | value_ptr mark = value_mark (); | |
927 | value_ptr v; | |
928 | ||
929 | /* Save the current frame and level so we can restore it after | |
930 | evaluating the watchpoint expression on its own frame. */ | |
931 | saved_frame = selected_frame; | |
932 | saved_level = selected_frame_level; | |
933 | ||
934 | /* Determine if the watchpoint is within scope. */ | |
935 | if (b->exp_valid_block == NULL) | |
936 | within_current_scope = 1; | |
937 | else | |
938 | { | |
939 | struct frame_info *fi; | |
940 | ||
941 | /* There might be no current frame at this moment if we are | |
942 | resuming from a step over a breakpoint. | |
943 | Set up current frame before trying to find the watchpoint | |
944 | frame. */ | |
945 | get_current_frame (); | |
946 | fi = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
947 | within_current_scope = (fi != NULL); | |
948 | if (within_current_scope) | |
949 | select_frame (fi, -1); | |
950 | } | |
951 | ||
952 | if (within_current_scope) | |
953 | { | |
954 | /* Evaluate the expression and cut the chain of values | |
5c44784c JM |
955 | produced off from the value chain. |
956 | ||
957 | Make sure the value returned isn't lazy; we use | |
958 | laziness to determine what memory GDB actually needed | |
959 | in order to compute the value of the expression. */ | |
c5aa993b | 960 | v = evaluate_expression (b->exp); |
5c44784c | 961 | VALUE_CONTENTS(v); |
c5aa993b JM |
962 | value_release_to_mark (mark); |
963 | ||
964 | b->val_chain = v; | |
965 | b->inserted = 1; | |
966 | ||
967 | /* Look at each value on the value chain. */ | |
968 | for (; v; v = v->next) | |
969 | { | |
5c44784c JM |
970 | /* If it's a memory location, and GDB actually needed |
971 | its contents to evaluate the expression, then we | |
972 | must watch it. */ | |
973 | if (VALUE_LVAL (v) == lval_memory | |
974 | && ! VALUE_LAZY (v)) | |
c5aa993b | 975 | { |
2acceee2 JM |
976 | CORE_ADDR addr; |
977 | int len, type; | |
c5aa993b JM |
978 | |
979 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
980 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
53a5351d | 981 | type = hw_write; |
c5aa993b | 982 | if (b->type == bp_read_watchpoint) |
53a5351d | 983 | type = hw_read; |
c5aa993b | 984 | else if (b->type == bp_access_watchpoint) |
53a5351d | 985 | type = hw_access; |
c5aa993b JM |
986 | |
987 | val = target_insert_watchpoint (addr, len, type); | |
988 | if (val == -1) | |
989 | { | |
990 | b->inserted = 0; | |
991 | break; | |
992 | } | |
993 | val = 0; | |
994 | } | |
995 | } | |
996 | /* Failure to insert a watchpoint on any memory value in the | |
997 | value chain brings us here. */ | |
998 | if (!b->inserted) | |
53a5351d JM |
999 | { |
1000 | remove_breakpoint (b, mark_uninserted); | |
1001 | warning ("Could not insert hardware watchpoint %d.", | |
1002 | b->number); | |
1003 | val = -1; | |
1004 | } | |
c5aa993b JM |
1005 | } |
1006 | else | |
1007 | { | |
53a5351d JM |
1008 | printf_filtered ("Hardware watchpoint %d deleted", b->number); |
1009 | printf_filtered ("because the program has left the block \n"); | |
1010 | printf_filtered ("in which its expression is valid.\n"); | |
c5aa993b JM |
1011 | if (b->related_breakpoint) |
1012 | b->related_breakpoint->disposition = del_at_next_stop; | |
1013 | b->disposition = del_at_next_stop; | |
1014 | } | |
c906108c | 1015 | |
c5aa993b JM |
1016 | /* Restore the frame and level. */ |
1017 | if ((saved_frame != selected_frame) || | |
1018 | (saved_level != selected_frame_level)) | |
1019 | select_and_print_frame (saved_frame, saved_level); | |
53a5351d JM |
1020 | |
1021 | if (val) | |
1022 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1023 | } |
1024 | else if ((b->type == bp_catch_fork | |
1025 | || b->type == bp_catch_vfork | |
1026 | || b->type == bp_catch_exec) | |
1027 | && b->enable == enabled | |
1028 | && !b->inserted | |
1029 | && !b->duplicate) | |
1030 | { | |
1031 | val = -1; | |
1032 | switch (b->type) | |
1033 | { | |
1034 | case bp_catch_fork: | |
1035 | val = target_insert_fork_catchpoint (inferior_pid); | |
1036 | break; | |
1037 | case bp_catch_vfork: | |
1038 | val = target_insert_vfork_catchpoint (inferior_pid); | |
1039 | break; | |
1040 | case bp_catch_exec: | |
1041 | val = target_insert_exec_catchpoint (inferior_pid); | |
1042 | break; | |
1043 | default: | |
53a5351d | 1044 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
c5aa993b JM |
1045 | break; |
1046 | } | |
1047 | if (val < 0) | |
1048 | { | |
1049 | target_terminal_ours_for_output (); | |
53a5351d | 1050 | warning ("Cannot insert catchpoint %d.", b->number); |
c5aa993b JM |
1051 | } |
1052 | else | |
1053 | b->inserted = 1; | |
53a5351d JM |
1054 | |
1055 | if (val) | |
1056 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1057 | } |
1058 | } | |
c906108c | 1059 | |
53a5351d | 1060 | return return_val; |
c906108c SS |
1061 | } |
1062 | ||
1063 | ||
1064 | int | |
1065 | remove_breakpoints () | |
1066 | { | |
1067 | register struct breakpoint *b; | |
1068 | int val; | |
1069 | ||
1070 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
1071 | { |
1072 | if (b->inserted) | |
1073 | { | |
1074 | val = remove_breakpoint (b, mark_uninserted); | |
1075 | if (val != 0) | |
1076 | return val; | |
1077 | } | |
1078 | } | |
c906108c SS |
1079 | return 0; |
1080 | } | |
1081 | ||
1082 | int | |
1083 | reattach_breakpoints (pid) | |
c5aa993b | 1084 | int pid; |
c906108c SS |
1085 | { |
1086 | register struct breakpoint *b; | |
1087 | int val; | |
c5aa993b | 1088 | int saved_inferior_pid = inferior_pid; |
c906108c | 1089 | |
53a5351d JM |
1090 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1091 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 1092 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1093 | { |
1094 | if (b->inserted) | |
1095 | { | |
1096 | remove_breakpoint (b, mark_inserted); | |
1097 | if (b->type == bp_hardware_breakpoint) | |
1098 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
1099 | else | |
1100 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
1101 | if (val != 0) | |
1102 | { | |
1103 | inferior_pid = saved_inferior_pid; | |
1104 | return val; | |
1105 | } | |
1106 | } | |
1107 | } | |
c906108c SS |
1108 | inferior_pid = saved_inferior_pid; |
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | void | |
1113 | update_breakpoints_after_exec () | |
1114 | { | |
c5aa993b JM |
1115 | struct breakpoint *b; |
1116 | struct breakpoint *temp; | |
c906108c SS |
1117 | |
1118 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1119 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1120 | shadow is NOT valid after an exec()! */ | |
1121 | mark_breakpoints_out (); | |
1122 | ||
1123 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1124 | { |
1125 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1126 | if (b->type == bp_shlib_event) | |
1127 | { | |
1128 | delete_breakpoint (b); | |
1129 | continue; | |
1130 | } | |
c906108c | 1131 | |
c4093a6a JM |
1132 | /* Thread event breakpoints must be set anew after an exec(). */ |
1133 | if (b->type == bp_thread_event) | |
1134 | { | |
1135 | delete_breakpoint (b); | |
1136 | continue; | |
1137 | } | |
1138 | ||
c5aa993b JM |
1139 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1140 | if (b->type == bp_step_resume) | |
1141 | { | |
1142 | delete_breakpoint (b); | |
1143 | continue; | |
1144 | } | |
1145 | ||
1146 | /* Ditto the sigtramp handler breakpoints. */ | |
1147 | if (b->type == bp_through_sigtramp) | |
1148 | { | |
1149 | delete_breakpoint (b); | |
1150 | continue; | |
1151 | } | |
1152 | ||
1153 | /* Ditto the exception-handling catchpoints. */ | |
1154 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1155 | { | |
1156 | delete_breakpoint (b); | |
1157 | continue; | |
1158 | } | |
1159 | ||
1160 | /* Don't delete an exec catchpoint, because else the inferior | |
1161 | won't stop when it ought! | |
1162 | ||
1163 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1164 | on this target, we may not be able to stop when the vfork is |
1165 | seen, but only when the subsequent exec is seen. (And because | |
1166 | deleting fork catchpoints here but not vfork catchpoints will | |
1167 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1168 | |
1169 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1170 | target address field, if any, is sufficient to have it be reset | |
1171 | automagically. Certainly on HP-UX that's true. */ | |
1172 | if ((b->type == bp_catch_exec) || | |
1173 | (b->type == bp_catch_vfork) || | |
1174 | (b->type == bp_catch_fork)) | |
1175 | { | |
1176 | b->address = (CORE_ADDR) NULL; | |
1177 | continue; | |
1178 | } | |
1179 | ||
1180 | /* bp_finish is a special case. The only way we ought to be able | |
1181 | to see one of these when an exec() has happened, is if the user | |
1182 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1183 | carries them to the call-site of the current callee, by setting | |
1184 | a temporary bp there and resuming. But in this case, the finish | |
1185 | will carry them entirely through the vfork & exec. | |
1186 | ||
1187 | We don't want to allow a bp_finish to remain inserted now. But | |
1188 | we can't safely delete it, 'cause finish_command has a handle to | |
1189 | the bp on a bpstat, and will later want to delete it. There's a | |
1190 | chance (and I've seen it happen) that if we delete the bp_finish | |
1191 | here, that its storage will get reused by the time finish_command | |
1192 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1193 | We really must allow finish_command to delete a bp_finish. | |
1194 | ||
53a5351d JM |
1195 | In the absense of a general solution for the "how do we know |
1196 | it's safe to delete something others may have handles to?" | |
1197 | problem, what we'll do here is just uninsert the bp_finish, and | |
1198 | let finish_command delete it. | |
1199 | ||
1200 | (We know the bp_finish is "doomed" in the sense that it's | |
1201 | momentary, and will be deleted as soon as finish_command sees | |
1202 | the inferior stopped. So it doesn't matter that the bp's | |
1203 | address is probably bogus in the new a.out, unlike e.g., the | |
1204 | solib breakpoints.) */ | |
c5aa993b | 1205 | |
c5aa993b JM |
1206 | if (b->type == bp_finish) |
1207 | { | |
1208 | continue; | |
1209 | } | |
1210 | ||
1211 | /* Without a symbolic address, we have little hope of the | |
1212 | pre-exec() address meaning the same thing in the post-exec() | |
1213 | a.out. */ | |
1214 | if (b->addr_string == NULL) | |
1215 | { | |
1216 | delete_breakpoint (b); | |
1217 | continue; | |
1218 | } | |
1219 | ||
1220 | /* If this breakpoint has survived the above battery of checks, then | |
1221 | it must have a symbolic address. Be sure that it gets reevaluated | |
1222 | to a target address, rather than reusing the old evaluation. */ | |
1223 | b->address = (CORE_ADDR) NULL; | |
1224 | } | |
c906108c SS |
1225 | } |
1226 | ||
1227 | int | |
1228 | detach_breakpoints (pid) | |
c5aa993b | 1229 | int pid; |
c906108c SS |
1230 | { |
1231 | register struct breakpoint *b; | |
1232 | int val; | |
c5aa993b JM |
1233 | int saved_inferior_pid = inferior_pid; |
1234 | ||
c906108c SS |
1235 | if (pid == inferior_pid) |
1236 | error ("Cannot detach breakpoints of inferior_pid"); | |
c5aa993b | 1237 | |
53a5351d JM |
1238 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1239 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 1240 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1241 | { |
1242 | if (b->inserted) | |
1243 | { | |
1244 | val = remove_breakpoint (b, mark_inserted); | |
1245 | if (val != 0) | |
1246 | { | |
1247 | inferior_pid = saved_inferior_pid; | |
1248 | return val; | |
1249 | } | |
1250 | } | |
1251 | } | |
c906108c SS |
1252 | inferior_pid = saved_inferior_pid; |
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | static int | |
1257 | remove_breakpoint (b, is) | |
1258 | struct breakpoint *b; | |
c5aa993b | 1259 | insertion_state_t is; |
c906108c SS |
1260 | { |
1261 | int val; | |
c5aa993b | 1262 | |
c2c6d25f JM |
1263 | if (b->enable == permanent) |
1264 | /* Permanent breakpoints cannot be inserted or removed. */ | |
1265 | return 0; | |
1266 | ||
c906108c | 1267 | if (b->type == bp_none) |
53a5351d JM |
1268 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
1269 | b->number); | |
c906108c SS |
1270 | |
1271 | if (b->type != bp_watchpoint | |
1272 | && b->type != bp_hardware_watchpoint | |
1273 | && b->type != bp_read_watchpoint | |
1274 | && b->type != bp_access_watchpoint | |
1275 | && b->type != bp_catch_fork | |
1276 | && b->type != bp_catch_vfork | |
1277 | && b->type != bp_catch_exec | |
1278 | && b->type != bp_catch_catch | |
1279 | && b->type != bp_catch_throw) | |
c906108c SS |
1280 | { |
1281 | if (b->type == bp_hardware_breakpoint) | |
c5aa993b | 1282 | val = target_remove_hw_breakpoint (b->address, b->shadow_contents); |
c906108c SS |
1283 | else |
1284 | { | |
1285 | /* Check to see if breakpoint is in an overlay section; | |
1286 | if so, we should remove the breakpoint at the LMA address. | |
1287 | If that is not equal to the raw address, then we should | |
1288 | presumable remove the breakpoint there as well. */ | |
c5aa993b | 1289 | if (overlay_debugging && b->section && |
c906108c SS |
1290 | section_is_overlay (b->section)) |
1291 | { | |
1292 | CORE_ADDR addr; | |
1293 | ||
1294 | addr = overlay_unmapped_address (b->address, b->section); | |
1295 | val = target_remove_breakpoint (addr, b->shadow_contents); | |
1296 | /* This would be the time to check val, to see if the | |
c5aa993b JM |
1297 | shadow breakpoint write to the load address succeeded. |
1298 | However, this might be an ordinary occurrance, eg. if | |
1299 | the unmapped overlay is in ROM. */ | |
1300 | val = 0; /* in case unmapped address failed */ | |
c906108c | 1301 | if (section_is_mapped (b->section)) |
c5aa993b | 1302 | val = target_remove_breakpoint (b->address, |
c906108c SS |
1303 | b->shadow_contents); |
1304 | } | |
c5aa993b JM |
1305 | else /* ordinary (non-overlay) address */ |
1306 | val = target_remove_breakpoint (b->address, b->shadow_contents); | |
c906108c SS |
1307 | } |
1308 | if (val) | |
1309 | return val; | |
1310 | b->inserted = (is == mark_inserted); | |
1311 | } | |
1312 | else if ((b->type == bp_hardware_watchpoint || | |
c5aa993b JM |
1313 | b->type == bp_read_watchpoint || |
1314 | b->type == bp_access_watchpoint) | |
c906108c | 1315 | && b->enable == enabled |
c5aa993b | 1316 | && !b->duplicate) |
c906108c SS |
1317 | { |
1318 | value_ptr v, n; | |
c5aa993b | 1319 | |
c906108c SS |
1320 | b->inserted = (is == mark_inserted); |
1321 | /* Walk down the saved value chain. */ | |
1322 | for (v = b->val_chain; v; v = v->next) | |
1323 | { | |
1324 | /* For each memory reference remove the watchpoint | |
1325 | at that address. */ | |
5c44784c JM |
1326 | if (VALUE_LVAL (v) == lval_memory |
1327 | && ! VALUE_LAZY (v)) | |
c906108c | 1328 | { |
2acceee2 JM |
1329 | CORE_ADDR addr; |
1330 | int len, type; | |
c5aa993b | 1331 | |
c906108c SS |
1332 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); |
1333 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
53a5351d | 1334 | type = hw_write; |
c906108c | 1335 | if (b->type == bp_read_watchpoint) |
53a5351d | 1336 | type = hw_read; |
c906108c | 1337 | else if (b->type == bp_access_watchpoint) |
53a5351d | 1338 | type = hw_access; |
c906108c SS |
1339 | |
1340 | val = target_remove_watchpoint (addr, len, type); | |
1341 | if (val == -1) | |
1342 | b->inserted = 1; | |
1343 | val = 0; | |
1344 | } | |
1345 | } | |
1346 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
1347 | if ((is == mark_uninserted) && (b->inserted)) | |
53a5351d | 1348 | warning ("Could not remove hardware watchpoint %d.", |
c906108c | 1349 | b->number); |
c5aa993b | 1350 | |
c906108c | 1351 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1352 | the next time the watchpoint is inserted. */ |
c906108c SS |
1353 | for (v = b->val_chain; v; v = n) |
1354 | { | |
1355 | n = v->next; | |
1356 | value_free (v); | |
1357 | } | |
1358 | b->val_chain = NULL; | |
1359 | } | |
1360 | else if ((b->type == bp_catch_fork || | |
c5aa993b JM |
1361 | b->type == bp_catch_vfork || |
1362 | b->type == bp_catch_exec) | |
c906108c | 1363 | && b->enable == enabled |
c5aa993b | 1364 | && !b->duplicate) |
c906108c SS |
1365 | { |
1366 | val = -1; | |
1367 | switch (b->type) | |
c5aa993b JM |
1368 | { |
1369 | case bp_catch_fork: | |
1370 | val = target_remove_fork_catchpoint (inferior_pid); | |
1371 | break; | |
1372 | case bp_catch_vfork: | |
1373 | val = target_remove_vfork_catchpoint (inferior_pid); | |
1374 | break; | |
1375 | case bp_catch_exec: | |
1376 | val = target_remove_exec_catchpoint (inferior_pid); | |
1377 | break; | |
ac9a91a7 | 1378 | default: |
53a5351d | 1379 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1380 | break; |
c5aa993b | 1381 | } |
c906108c SS |
1382 | if (val) |
1383 | return val; | |
1384 | b->inserted = (is == mark_inserted); | |
1385 | } | |
1386 | else if ((b->type == bp_catch_catch || | |
c5aa993b JM |
1387 | b->type == bp_catch_throw) |
1388 | && b->enable == enabled | |
1389 | && !b->duplicate) | |
c906108c SS |
1390 | { |
1391 | ||
c5aa993b | 1392 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1393 | if (val) |
c5aa993b | 1394 | return val; |
c906108c SS |
1395 | b->inserted = (is == mark_inserted); |
1396 | } | |
1397 | else if (ep_is_exception_catchpoint (b) | |
c5aa993b JM |
1398 | && b->inserted /* sometimes previous insert doesn't happen */ |
1399 | && b->enable == enabled | |
1400 | && !b->duplicate) | |
c906108c SS |
1401 | { |
1402 | ||
c5aa993b | 1403 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1404 | if (val) |
c5aa993b JM |
1405 | return val; |
1406 | ||
c906108c SS |
1407 | b->inserted = (is == mark_inserted); |
1408 | } | |
1409 | ||
1410 | return 0; | |
1411 | } | |
1412 | ||
1413 | /* Clear the "inserted" flag in all breakpoints. */ | |
1414 | ||
1415 | void | |
1416 | mark_breakpoints_out () | |
1417 | { | |
1418 | register struct breakpoint *b; | |
1419 | ||
1420 | ALL_BREAKPOINTS (b) | |
1421 | b->inserted = 0; | |
1422 | } | |
1423 | ||
53a5351d JM |
1424 | /* Clear the "inserted" flag in all breakpoints and delete any |
1425 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1426 | |
1427 | Plus other such housekeeping that has to be done for breakpoints | |
1428 | between runs. | |
1429 | ||
53a5351d JM |
1430 | Note: this function gets called at the end of a run (by |
1431 | generic_mourn_inferior) and when a run begins (by | |
1432 | init_wait_for_inferior). */ | |
c906108c SS |
1433 | |
1434 | ||
1435 | ||
1436 | void | |
1437 | breakpoint_init_inferior (context) | |
c5aa993b | 1438 | enum inf_context context; |
c906108c SS |
1439 | { |
1440 | register struct breakpoint *b, *temp; | |
1441 | static int warning_needed = 0; | |
1442 | ||
1443 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1444 | { |
1445 | b->inserted = 0; | |
c906108c | 1446 | |
c5aa993b JM |
1447 | switch (b->type) |
1448 | { | |
1449 | case bp_call_dummy: | |
1450 | case bp_watchpoint_scope: | |
c906108c | 1451 | |
c5aa993b JM |
1452 | /* If the call dummy breakpoint is at the entry point it will |
1453 | cause problems when the inferior is rerun, so we better | |
1454 | get rid of it. | |
c906108c | 1455 | |
c5aa993b JM |
1456 | Also get rid of scope breakpoints. */ |
1457 | delete_breakpoint (b); | |
1458 | break; | |
c906108c | 1459 | |
c5aa993b JM |
1460 | case bp_watchpoint: |
1461 | case bp_hardware_watchpoint: | |
1462 | case bp_read_watchpoint: | |
1463 | case bp_access_watchpoint: | |
c906108c | 1464 | |
c5aa993b JM |
1465 | /* Likewise for watchpoints on local expressions. */ |
1466 | if (b->exp_valid_block != NULL) | |
1467 | delete_breakpoint (b); | |
1468 | break; | |
1469 | default: | |
1470 | /* Likewise for exception catchpoints in dynamic-linked | |
1471 | executables where required */ | |
1472 | if (ep_is_exception_catchpoint (b) && | |
1473 | exception_catchpoints_are_fragile) | |
1474 | { | |
1475 | warning_needed = 1; | |
c906108c | 1476 | delete_breakpoint (b); |
c5aa993b JM |
1477 | } |
1478 | break; | |
1479 | } | |
1480 | } | |
c906108c SS |
1481 | |
1482 | if (exception_catchpoints_are_fragile) | |
1483 | exception_support_initialized = 0; | |
1484 | ||
c5aa993b | 1485 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1486 | if (warning_needed && (context != inf_exited)) |
1487 | { | |
53a5351d JM |
1488 | warning ("Exception catchpoints from last run were deleted."); |
1489 | warning ("You must reinsert them explicitly."); | |
c906108c | 1490 | warning_needed = 0; |
c5aa993b | 1491 | } |
c906108c SS |
1492 | } |
1493 | ||
c2c6d25f JM |
1494 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1495 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1496 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1497 | permanent breakpoint. | |
1498 | - When continuing from a location with an ordinary breakpoint, we | |
1499 | actually single step once before calling insert_breakpoints. | |
1500 | - When continuing from a localion with a permanent breakpoint, we | |
1501 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1502 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1503 | |
c2c6d25f | 1504 | enum breakpoint_here |
c906108c SS |
1505 | breakpoint_here_p (pc) |
1506 | CORE_ADDR pc; | |
1507 | { | |
1508 | register struct breakpoint *b; | |
c2c6d25f | 1509 | int any_breakpoint_here = 0; |
c906108c SS |
1510 | |
1511 | ALL_BREAKPOINTS (b) | |
c2c6d25f JM |
1512 | if ((b->enable == enabled |
1513 | || b->enable == permanent) | |
c906108c | 1514 | && b->address == pc) /* bp is enabled and matches pc */ |
c2c6d25f JM |
1515 | { |
1516 | if (overlay_debugging && | |
1517 | section_is_overlay (b->section) && | |
1518 | !section_is_mapped (b->section)) | |
1519 | continue; /* unmapped overlay -- can't be a match */ | |
1520 | else if (b->enable == permanent) | |
1521 | return permanent_breakpoint_here; | |
1522 | else | |
1523 | any_breakpoint_here = 1; | |
1524 | } | |
c906108c | 1525 | |
c2c6d25f | 1526 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1527 | } |
1528 | ||
c2c6d25f | 1529 | |
53a5351d JM |
1530 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1531 | but it only returns true if there is actually a breakpoint inserted | |
1532 | at PC. */ | |
c906108c SS |
1533 | |
1534 | int | |
1535 | breakpoint_inserted_here_p (pc) | |
1536 | CORE_ADDR pc; | |
1537 | { | |
1538 | register struct breakpoint *b; | |
1539 | ||
1540 | ALL_BREAKPOINTS (b) | |
1541 | if (b->inserted | |
1542 | && b->address == pc) /* bp is inserted and matches pc */ | |
c5aa993b JM |
1543 | { |
1544 | if (overlay_debugging && | |
1545 | section_is_overlay (b->section) && | |
1546 | !section_is_mapped (b->section)) | |
1547 | continue; /* unmapped overlay -- can't be a match */ | |
1548 | else | |
1549 | return 1; | |
1550 | } | |
c906108c SS |
1551 | |
1552 | return 0; | |
1553 | } | |
1554 | ||
53a5351d JM |
1555 | /* Return nonzero if FRAME is a dummy frame. We can't use |
1556 | PC_IN_CALL_DUMMY because figuring out the saved SP would take too | |
1557 | much time, at least using get_saved_register on the 68k. This | |
1558 | means that for this function to work right a port must use the | |
1559 | bp_call_dummy breakpoint. */ | |
c906108c SS |
1560 | |
1561 | int | |
1562 | frame_in_dummy (frame) | |
1563 | struct frame_info *frame; | |
1564 | { | |
c906108c SS |
1565 | struct breakpoint *b; |
1566 | ||
c5aa993b | 1567 | if (!CALL_DUMMY_P) |
7a292a7a SS |
1568 | return 0; |
1569 | ||
1570 | if (USE_GENERIC_DUMMY_FRAMES) | |
1571 | return generic_pc_in_call_dummy (frame->pc, frame->frame, frame->frame); | |
c5aa993b | 1572 | |
c906108c | 1573 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1574 | { |
1575 | if (b->type == bp_call_dummy | |
1576 | && b->frame == frame->frame | |
1577 | /* We need to check the PC as well as the frame on the sparc, | |
1578 | for signals.exp in the testsuite. */ | |
1579 | && (frame->pc | |
1580 | >= (b->address | |
1581 | - SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE)) | |
1582 | && frame->pc <= b->address) | |
1583 | return 1; | |
1584 | } | |
c906108c SS |
1585 | return 0; |
1586 | } | |
1587 | ||
1588 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC | |
1589 | is valid for process/thread PID. */ | |
1590 | ||
1591 | int | |
1592 | breakpoint_thread_match (pc, pid) | |
1593 | CORE_ADDR pc; | |
1594 | int pid; | |
1595 | { | |
1596 | struct breakpoint *b; | |
1597 | int thread; | |
1598 | ||
1599 | thread = pid_to_thread_id (pid); | |
1600 | ||
1601 | ALL_BREAKPOINTS (b) | |
1602 | if (b->enable != disabled | |
1603 | && b->enable != shlib_disabled | |
1604 | && b->enable != call_disabled | |
1605 | && b->address == pc | |
1606 | && (b->thread == -1 || b->thread == thread)) | |
c5aa993b JM |
1607 | { |
1608 | if (overlay_debugging && | |
1609 | section_is_overlay (b->section) && | |
1610 | !section_is_mapped (b->section)) | |
1611 | continue; /* unmapped overlay -- can't be a match */ | |
1612 | else | |
1613 | return 1; | |
1614 | } | |
c906108c SS |
1615 | |
1616 | return 0; | |
1617 | } | |
c906108c | 1618 | \f |
c5aa993b | 1619 | |
c906108c SS |
1620 | /* bpstat stuff. External routines' interfaces are documented |
1621 | in breakpoint.h. */ | |
1622 | ||
1623 | int | |
1624 | ep_is_catchpoint (ep) | |
c5aa993b | 1625 | struct breakpoint *ep; |
c906108c SS |
1626 | { |
1627 | return | |
1628 | (ep->type == bp_catch_load) | |
1629 | || (ep->type == bp_catch_unload) | |
1630 | || (ep->type == bp_catch_fork) | |
1631 | || (ep->type == bp_catch_vfork) | |
1632 | || (ep->type == bp_catch_exec) | |
1633 | || (ep->type == bp_catch_catch) | |
1634 | || (ep->type == bp_catch_throw) | |
1635 | ||
1636 | ||
c5aa993b | 1637 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c SS |
1638 | ; |
1639 | } | |
c5aa993b | 1640 | |
c906108c SS |
1641 | int |
1642 | ep_is_shlib_catchpoint (ep) | |
c5aa993b | 1643 | struct breakpoint *ep; |
c906108c SS |
1644 | { |
1645 | return | |
1646 | (ep->type == bp_catch_load) | |
1647 | || (ep->type == bp_catch_unload) | |
1648 | ; | |
1649 | } | |
1650 | ||
1651 | int | |
1652 | ep_is_exception_catchpoint (ep) | |
c5aa993b | 1653 | struct breakpoint *ep; |
c906108c SS |
1654 | { |
1655 | return | |
1656 | (ep->type == bp_catch_catch) | |
1657 | || (ep->type == bp_catch_throw) | |
1658 | ; | |
1659 | } | |
1660 | ||
1661 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1662 | Also free any storage that is part of a bpstat. */ | |
1663 | ||
1664 | void | |
1665 | bpstat_clear (bsp) | |
1666 | bpstat *bsp; | |
1667 | { | |
1668 | bpstat p; | |
1669 | bpstat q; | |
1670 | ||
1671 | if (bsp == 0) | |
1672 | return; | |
1673 | p = *bsp; | |
1674 | while (p != NULL) | |
1675 | { | |
1676 | q = p->next; | |
1677 | if (p->old_val != NULL) | |
1678 | value_free (p->old_val); | |
c5aa993b | 1679 | free ((PTR) p); |
c906108c SS |
1680 | p = q; |
1681 | } | |
1682 | *bsp = NULL; | |
1683 | } | |
1684 | ||
1685 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1686 | is part of the bpstat is copied as well. */ | |
1687 | ||
1688 | bpstat | |
1689 | bpstat_copy (bs) | |
1690 | bpstat bs; | |
1691 | { | |
1692 | bpstat p = NULL; | |
1693 | bpstat tmp; | |
1694 | bpstat retval = NULL; | |
1695 | ||
1696 | if (bs == NULL) | |
1697 | return bs; | |
1698 | ||
1699 | for (; bs != NULL; bs = bs->next) | |
1700 | { | |
1701 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1702 | memcpy (tmp, bs, sizeof (*tmp)); | |
1703 | if (p == NULL) | |
1704 | /* This is the first thing in the chain. */ | |
1705 | retval = tmp; | |
1706 | else | |
1707 | p->next = tmp; | |
1708 | p = tmp; | |
1709 | } | |
1710 | p->next = NULL; | |
1711 | return retval; | |
1712 | } | |
1713 | ||
1714 | /* Find the bpstat associated with this breakpoint */ | |
1715 | ||
1716 | bpstat | |
c5aa993b | 1717 | bpstat_find_breakpoint (bsp, breakpoint) |
c906108c SS |
1718 | bpstat bsp; |
1719 | struct breakpoint *breakpoint; | |
1720 | { | |
c5aa993b JM |
1721 | if (bsp == NULL) |
1722 | return NULL; | |
c906108c | 1723 | |
c5aa993b JM |
1724 | for (; bsp != NULL; bsp = bsp->next) |
1725 | { | |
1726 | if (bsp->breakpoint_at == breakpoint) | |
1727 | return bsp; | |
1728 | } | |
c906108c SS |
1729 | return NULL; |
1730 | } | |
1731 | ||
1732 | /* Find a step_resume breakpoint associated with this bpstat. | |
1733 | (If there are multiple step_resume bp's on the list, this function | |
1734 | will arbitrarily pick one.) | |
1735 | ||
1736 | It is an error to use this function if BPSTAT doesn't contain a | |
1737 | step_resume breakpoint. | |
1738 | ||
1739 | See wait_for_inferior's use of this function. */ | |
1740 | struct breakpoint * | |
1741 | bpstat_find_step_resume_breakpoint (bsp) | |
c5aa993b | 1742 | bpstat bsp; |
c906108c SS |
1743 | { |
1744 | if (bsp == NULL) | |
1745 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1746 | ||
1747 | for (; bsp != NULL; bsp = bsp->next) | |
1748 | { | |
1749 | if ((bsp->breakpoint_at != NULL) && | |
c5aa993b JM |
1750 | (bsp->breakpoint_at->type == bp_step_resume)) |
1751 | return bsp->breakpoint_at; | |
c906108c SS |
1752 | } |
1753 | ||
1754 | error ("Internal error (no step_resume breakpoint found)"); | |
1755 | } | |
1756 | ||
1757 | ||
1758 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1759 | at. *BSP upon return is a bpstat which points to the remaining | |
1760 | breakpoints stopped at (but which is not guaranteed to be good for | |
1761 | anything but further calls to bpstat_num). | |
1762 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1763 | ||
1764 | int | |
1765 | bpstat_num (bsp) | |
1766 | bpstat *bsp; | |
1767 | { | |
1768 | struct breakpoint *b; | |
1769 | ||
1770 | if ((*bsp) == NULL) | |
1771 | return 0; /* No more breakpoint values */ | |
1772 | else | |
1773 | { | |
1774 | b = (*bsp)->breakpoint_at; | |
1775 | *bsp = (*bsp)->next; | |
1776 | if (b == NULL) | |
1777 | return -1; /* breakpoint that's been deleted since */ | |
1778 | else | |
c5aa993b | 1779 | return b->number; /* We have its number */ |
c906108c SS |
1780 | } |
1781 | } | |
1782 | ||
1783 | /* Modify BS so that the actions will not be performed. */ | |
1784 | ||
1785 | void | |
1786 | bpstat_clear_actions (bs) | |
1787 | bpstat bs; | |
1788 | { | |
1789 | for (; bs != NULL; bs = bs->next) | |
1790 | { | |
1791 | bs->commands = NULL; | |
1792 | if (bs->old_val != NULL) | |
1793 | { | |
1794 | value_free (bs->old_val); | |
1795 | bs->old_val = NULL; | |
1796 | } | |
1797 | } | |
1798 | } | |
1799 | ||
1800 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1801 | /* ARGSUSED */ | |
1802 | static void | |
1803 | cleanup_executing_breakpoints (ignore) | |
1804 | PTR ignore; | |
1805 | { | |
1806 | executing_breakpoint_commands = 0; | |
1807 | } | |
1808 | ||
1809 | /* Execute all the commands associated with all the breakpoints at this | |
1810 | location. Any of these commands could cause the process to proceed | |
1811 | beyond this point, etc. We look out for such changes by checking | |
1812 | the global "breakpoint_proceeded" after each command. */ | |
1813 | ||
1814 | void | |
1815 | bpstat_do_actions (bsp) | |
1816 | bpstat *bsp; | |
1817 | { | |
1818 | bpstat bs; | |
1819 | struct cleanup *old_chain; | |
1820 | struct command_line *cmd; | |
1821 | ||
1822 | /* Avoid endless recursion if a `source' command is contained | |
1823 | in bs->commands. */ | |
1824 | if (executing_breakpoint_commands) | |
1825 | return; | |
1826 | ||
1827 | executing_breakpoint_commands = 1; | |
1828 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1829 | ||
1830 | top: | |
1831 | /* Note that (as of this writing), our callers all appear to | |
1832 | be passing us the address of global stop_bpstat. And, if | |
1833 | our calls to execute_control_command cause the inferior to | |
1834 | proceed, that global (and hence, *bsp) will change. | |
1835 | ||
1836 | We must be careful to not touch *bsp unless the inferior | |
1837 | has not proceeded. */ | |
1838 | ||
1839 | /* This pointer will iterate over the list of bpstat's. */ | |
1840 | bs = *bsp; | |
1841 | ||
1842 | breakpoint_proceeded = 0; | |
1843 | for (; bs != NULL; bs = bs->next) | |
1844 | { | |
1845 | cmd = bs->commands; | |
1846 | while (cmd != NULL) | |
1847 | { | |
1848 | execute_control_command (cmd); | |
1849 | ||
1850 | if (breakpoint_proceeded) | |
1851 | break; | |
1852 | else | |
1853 | cmd = cmd->next; | |
1854 | } | |
1855 | if (breakpoint_proceeded) | |
1856 | /* The inferior is proceeded by the command; bomb out now. | |
1857 | The bpstat chain has been blown away by wait_for_inferior. | |
1858 | But since execution has stopped again, there is a new bpstat | |
1859 | to look at, so start over. */ | |
1860 | goto top; | |
1861 | else | |
1862 | bs->commands = NULL; | |
1863 | } | |
1864 | ||
1865 | executing_breakpoint_commands = 0; | |
1866 | discard_cleanups (old_chain); | |
1867 | } | |
1868 | ||
e514a9d6 | 1869 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 1870 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
1871 | by having it set different print_it values. |
1872 | ||
1873 | Current scheme: When we stop, bpstat_print() is called. It loops | |
1874 | through the bpstat list of things causing this stop, calling the | |
1875 | print_bp_stop_message function on each one. The behavior of the | |
1876 | print_bp_stop_message function depends on the print_it field of | |
1877 | bpstat. If such field so indicates, call this function here. | |
1878 | ||
1879 | Return values from this routine (ultimately used by bpstat_print() | |
1880 | and normal_stop() to decide what to do): | |
1881 | PRINT_NOTHING: Means we already printed all we needed to print, | |
1882 | don't print anything else. | |
1883 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
1884 | that something to be followed by a location. | |
1885 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
1886 | that something to be followed by a location. | |
1887 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
1888 | analysis. */ | |
c906108c | 1889 | |
917317f4 | 1890 | static enum print_stop_action |
e514a9d6 | 1891 | print_it_typical (bs) |
c906108c SS |
1892 | bpstat bs; |
1893 | { | |
8b93c638 JM |
1894 | #ifdef UI_OUT |
1895 | struct cleanup *old_chain; | |
1896 | struct ui_stream *stb; | |
1897 | stb = ui_out_stream_new (uiout); | |
1898 | old_chain = make_cleanup ((make_cleanup_func) ui_out_stream_delete, stb); | |
1899 | #endif /* UI_OUT */ | |
c906108c SS |
1900 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
1901 | which has since been deleted. */ | |
e514a9d6 | 1902 | if (bs->breakpoint_at == NULL) |
917317f4 | 1903 | return PRINT_UNKNOWN; |
c906108c | 1904 | |
e514a9d6 | 1905 | switch (bs->breakpoint_at->type) |
c906108c | 1906 | { |
e514a9d6 JM |
1907 | case bp_breakpoint: |
1908 | case bp_hardware_breakpoint: | |
8b93c638 JM |
1909 | #ifdef UI_OUT |
1910 | annotate_breakpoint (bs->breakpoint_at->number); | |
1911 | ui_out_text (uiout, "\nBreakpoint "); | |
fb40c209 AC |
1912 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
1913 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); | |
8b93c638 JM |
1914 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
1915 | ui_out_text (uiout, ", "); | |
1916 | return PRINT_SRC_AND_LOC; | |
1917 | #else | |
e514a9d6 JM |
1918 | /* I think the user probably only wants to see one breakpoint |
1919 | number, not all of them. */ | |
1920 | annotate_breakpoint (bs->breakpoint_at->number); | |
1921 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); | |
917317f4 | 1922 | return PRINT_SRC_AND_LOC; |
8b93c638 | 1923 | #endif |
e514a9d6 JM |
1924 | break; |
1925 | ||
1926 | case bp_shlib_event: | |
917317f4 JM |
1927 | /* Did we stop because the user set the stop_on_solib_events |
1928 | variable? (If so, we report this as a generic, "Stopped due | |
1929 | to shlib event" message.) */ | |
e514a9d6 JM |
1930 | printf_filtered ("Stopped due to shared library event\n"); |
1931 | return PRINT_NOTHING; | |
1932 | break; | |
1933 | ||
c4093a6a JM |
1934 | case bp_thread_event: |
1935 | /* Not sure how we will get here. | |
1936 | GDB should not stop for these breakpoints. */ | |
1937 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
1938 | return PRINT_NOTHING; | |
1939 | break; | |
1940 | ||
e514a9d6 | 1941 | case bp_catch_load: |
c906108c SS |
1942 | annotate_catchpoint (bs->breakpoint_at->number); |
1943 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
1944 | printf_filtered ("loaded"); |
1945 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1946 | return PRINT_SRC_AND_LOC; | |
1947 | break; | |
1948 | ||
1949 | case bp_catch_unload: | |
1950 | annotate_catchpoint (bs->breakpoint_at->number); | |
1951 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1952 | printf_filtered ("unloaded"); | |
1953 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1954 | return PRINT_SRC_AND_LOC; | |
1955 | break; | |
1956 | ||
1957 | case bp_catch_fork: | |
1958 | annotate_catchpoint (bs->breakpoint_at->number); | |
1959 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1960 | printf_filtered ("forked"); | |
53a5351d JM |
1961 | printf_filtered (" process %d), ", |
1962 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 1963 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1964 | break; |
1965 | ||
1966 | case bp_catch_vfork: | |
1967 | annotate_catchpoint (bs->breakpoint_at->number); | |
1968 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1969 | printf_filtered ("vforked"); | |
1970 | printf_filtered (" process %d), ", | |
1971 | bs->breakpoint_at->forked_inferior_pid); | |
1972 | return PRINT_SRC_AND_LOC; | |
1973 | break; | |
1974 | ||
1975 | case bp_catch_exec: | |
c906108c SS |
1976 | annotate_catchpoint (bs->breakpoint_at->number); |
1977 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
1978 | bs->breakpoint_at->number, |
1979 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 1980 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1981 | break; |
1982 | ||
1983 | case bp_catch_catch: | |
53a5351d JM |
1984 | if (current_exception_event && |
1985 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
1986 | { |
1987 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1988 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
1989 | bs->breakpoint_at->number); | |
c5aa993b JM |
1990 | printf_filtered ("throw location "); |
1991 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1992 | printf_filtered ("%s:%d", | |
1993 | CURRENT_EXCEPTION_THROW_FILE, | |
1994 | CURRENT_EXCEPTION_THROW_LINE); | |
1995 | else | |
1996 | printf_filtered ("unknown"); | |
1997 | ||
1998 | printf_filtered (", catch location "); | |
1999 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2000 | printf_filtered ("%s:%d", | |
2001 | CURRENT_EXCEPTION_CATCH_FILE, | |
2002 | CURRENT_EXCEPTION_CATCH_LINE); | |
2003 | else | |
2004 | printf_filtered ("unknown"); | |
2005 | ||
2006 | printf_filtered ("\n"); | |
e514a9d6 JM |
2007 | /* don't bother to print location frame info */ |
2008 | return PRINT_SRC_ONLY; | |
c5aa993b | 2009 | } |
c906108c | 2010 | else |
c5aa993b | 2011 | { |
e514a9d6 JM |
2012 | /* really throw, some other bpstat will handle it */ |
2013 | return PRINT_UNKNOWN; | |
c5aa993b | 2014 | } |
e514a9d6 JM |
2015 | break; |
2016 | ||
2017 | case bp_catch_throw: | |
53a5351d JM |
2018 | if (current_exception_event && |
2019 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2020 | { |
2021 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2022 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2023 | bs->breakpoint_at->number); | |
c5aa993b JM |
2024 | printf_filtered ("throw location "); |
2025 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2026 | printf_filtered ("%s:%d", | |
2027 | CURRENT_EXCEPTION_THROW_FILE, | |
2028 | CURRENT_EXCEPTION_THROW_LINE); | |
2029 | else | |
2030 | printf_filtered ("unknown"); | |
2031 | ||
2032 | printf_filtered (", catch location "); | |
2033 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2034 | printf_filtered ("%s:%d", | |
2035 | CURRENT_EXCEPTION_CATCH_FILE, | |
2036 | CURRENT_EXCEPTION_CATCH_LINE); | |
2037 | else | |
2038 | printf_filtered ("unknown"); | |
2039 | ||
2040 | printf_filtered ("\n"); | |
e514a9d6 JM |
2041 | /* don't bother to print location frame info */ |
2042 | return PRINT_SRC_ONLY; | |
c5aa993b | 2043 | } |
c906108c | 2044 | else |
c5aa993b | 2045 | { |
e514a9d6 JM |
2046 | /* really catch, some other bpstat will handle it */ |
2047 | return PRINT_UNKNOWN; | |
c5aa993b | 2048 | } |
e514a9d6 | 2049 | break; |
c906108c | 2050 | |
e514a9d6 JM |
2051 | case bp_watchpoint: |
2052 | case bp_hardware_watchpoint: | |
2053 | if (bs->old_val != NULL) | |
2054 | { | |
2055 | annotate_watchpoint (bs->breakpoint_at->number); | |
8b93c638 | 2056 | #ifdef UI_OUT |
fb40c209 AC |
2057 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2058 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); | |
8b93c638 JM |
2059 | mention (bs->breakpoint_at); |
2060 | ui_out_list_begin (uiout, "value"); | |
2061 | ui_out_text (uiout, "\nOld value = "); | |
2062 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2063 | ui_out_field_stream (uiout, "old", stb); | |
2064 | ui_out_text (uiout, "\nNew value = "); | |
2065 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2066 | ui_out_field_stream (uiout, "new", stb); | |
2067 | ui_out_list_end (uiout); | |
2068 | ui_out_text (uiout, "\n"); | |
2069 | #else | |
e514a9d6 JM |
2070 | mention (bs->breakpoint_at); |
2071 | printf_filtered ("\nOld value = "); | |
2072 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2073 | printf_filtered ("\nNew value = "); | |
2074 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
2075 | Val_pretty_default); | |
2076 | printf_filtered ("\n"); | |
8b93c638 | 2077 | #endif |
e514a9d6 JM |
2078 | value_free (bs->old_val); |
2079 | bs->old_val = NULL; | |
2080 | } | |
2081 | /* More than one watchpoint may have been triggered. */ | |
2082 | return PRINT_UNKNOWN; | |
2083 | break; | |
2084 | ||
2085 | case bp_read_watchpoint: | |
8b93c638 | 2086 | #ifdef UI_OUT |
fb40c209 AC |
2087 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2088 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); | |
8b93c638 JM |
2089 | mention (bs->breakpoint_at); |
2090 | ui_out_list_begin (uiout, "value"); | |
2091 | ui_out_text (uiout, "\nValue = "); | |
2092 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2093 | ui_out_field_stream (uiout, "value", stb); | |
2094 | ui_out_list_end (uiout); | |
2095 | ui_out_text (uiout, "\n"); | |
2096 | #else | |
c906108c | 2097 | mention (bs->breakpoint_at); |
e514a9d6 | 2098 | printf_filtered ("\nValue = "); |
c906108c SS |
2099 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
2100 | Val_pretty_default); | |
2101 | printf_filtered ("\n"); | |
8b93c638 | 2102 | #endif |
917317f4 | 2103 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2104 | break; |
2105 | ||
2106 | case bp_access_watchpoint: | |
8b93c638 JM |
2107 | #ifdef UI_OUT |
2108 | if (bs->old_val != NULL) | |
2109 | { | |
2110 | annotate_watchpoint (bs->breakpoint_at->number); | |
fb40c209 AC |
2111 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2112 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); | |
8b93c638 JM |
2113 | mention (bs->breakpoint_at); |
2114 | ui_out_list_begin (uiout, "value"); | |
2115 | ui_out_text (uiout, "\nOld value = "); | |
2116 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2117 | ui_out_field_stream (uiout, "old", stb); | |
2118 | value_free (bs->old_val); | |
2119 | bs->old_val = NULL; | |
2120 | ui_out_text (uiout, "\nNew value = "); | |
2121 | } | |
2122 | else | |
2123 | { | |
2124 | mention (bs->breakpoint_at); | |
fb40c209 AC |
2125 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2126 | ui_out_list_begin (uiout, "value"); | |
8b93c638 JM |
2127 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
2128 | ui_out_text (uiout, "\nValue = "); | |
2129 | } | |
2130 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2131 | ui_out_field_stream (uiout, "new", stb); | |
2132 | ui_out_list_end (uiout); | |
2133 | ui_out_text (uiout, "\n"); | |
2134 | #else | |
e514a9d6 JM |
2135 | if (bs->old_val != NULL) |
2136 | { | |
2137 | annotate_watchpoint (bs->breakpoint_at->number); | |
2138 | mention (bs->breakpoint_at); | |
2139 | printf_filtered ("\nOld value = "); | |
2140 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2141 | value_free (bs->old_val); | |
2142 | bs->old_val = NULL; | |
2143 | printf_filtered ("\nNew value = "); | |
2144 | } | |
2145 | else | |
2146 | { | |
2147 | mention (bs->breakpoint_at); | |
2148 | printf_filtered ("\nValue = "); | |
2149 | } | |
c906108c | 2150 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
c5aa993b | 2151 | Val_pretty_default); |
c906108c | 2152 | printf_filtered ("\n"); |
8b93c638 | 2153 | #endif |
917317f4 | 2154 | return PRINT_UNKNOWN; |
e514a9d6 | 2155 | break; |
4ce44c66 | 2156 | |
e514a9d6 JM |
2157 | /* Fall through, we don't deal with these types of breakpoints |
2158 | here. */ | |
2159 | ||
11cf8741 | 2160 | case bp_finish: |
fb40c209 AC |
2161 | #ifdef UI_OUT |
2162 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2163 | ui_out_field_string (uiout, "reason", "function-finished"); | |
2164 | #endif | |
8b93c638 JM |
2165 | return PRINT_UNKNOWN; |
2166 | break; | |
2167 | ||
e514a9d6 | 2168 | case bp_until: |
fb40c209 AC |
2169 | #ifdef UI_OUT |
2170 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2171 | ui_out_field_string (uiout, "reason", "location-reached"); | |
2172 | #endif | |
8b93c638 JM |
2173 | return PRINT_UNKNOWN; |
2174 | break; | |
2175 | ||
c2d11a7d | 2176 | case bp_none: |
e514a9d6 JM |
2177 | case bp_longjmp: |
2178 | case bp_longjmp_resume: | |
2179 | case bp_step_resume: | |
2180 | case bp_through_sigtramp: | |
2181 | case bp_watchpoint_scope: | |
2182 | case bp_call_dummy: | |
2183 | default: | |
2184 | return PRINT_UNKNOWN; | |
2185 | } | |
2186 | } | |
2187 | ||
2188 | /* Generic routine for printing messages indicating why we | |
2189 | stopped. The behavior of this function depends on the value | |
2190 | 'print_it' in the bpstat structure. Under some circumstances we | |
2191 | may decide not to print anything here and delegate the task to | |
2192 | normal_stop(). */ | |
2193 | ||
2194 | static enum print_stop_action | |
2195 | print_bp_stop_message (bpstat bs) | |
2196 | { | |
2197 | switch (bs->print_it) | |
2198 | { | |
2199 | case print_it_noop: | |
2200 | /* Nothing should be printed for this bpstat entry. */ | |
2201 | return PRINT_UNKNOWN; | |
2202 | break; | |
2203 | ||
2204 | case print_it_done: | |
2205 | /* We still want to print the frame, but we already printed the | |
2206 | relevant messages. */ | |
2207 | return PRINT_SRC_AND_LOC; | |
2208 | break; | |
2209 | ||
2210 | case print_it_normal: | |
2211 | /* Normal case, we handle everything in print_it_typical. */ | |
2212 | return print_it_typical (bs); | |
2213 | break; | |
2214 | default: | |
2215 | internal_error ("print_bp_stop_message: unrecognized enum value"); | |
2216 | break; | |
c906108c | 2217 | } |
c906108c SS |
2218 | } |
2219 | ||
e514a9d6 JM |
2220 | /* Print a message indicating what happened. This is called from |
2221 | normal_stop(). The input to this routine is the head of the bpstat | |
2222 | list - a list of the eventpoints that caused this stop. This | |
2223 | routine calls the generic print routine for printing a message | |
2224 | about reasons for stopping. This will print (for example) the | |
2225 | "Breakpoint n," part of the output. The return value of this | |
2226 | routine is one of: | |
c906108c | 2227 | |
917317f4 JM |
2228 | PRINT_UNKNOWN: Means we printed nothing |
2229 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2230 | code to print the location. An example is |
2231 | "Breakpoint 1, " which should be followed by | |
2232 | the location. | |
917317f4 | 2233 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2234 | to also print the location part of the message. |
2235 | An example is the catch/throw messages, which | |
917317f4 JM |
2236 | don't require a location appended to the end. |
2237 | PRINT_NOTHING: We have done some printing and we don't need any | |
2238 | further info to be printed.*/ | |
c906108c | 2239 | |
917317f4 | 2240 | enum print_stop_action |
c906108c SS |
2241 | bpstat_print (bs) |
2242 | bpstat bs; | |
2243 | { | |
2244 | int val; | |
c5aa993b | 2245 | |
c906108c | 2246 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2247 | (Currently all watchpoints go on the bpstat whether hit or not. |
2248 | That probably could (should) be changed, provided care is taken | |
c906108c | 2249 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2250 | for (; bs; bs = bs->next) |
2251 | { | |
2252 | val = print_bp_stop_message (bs); | |
2253 | if (val == PRINT_SRC_ONLY | |
2254 | || val == PRINT_SRC_AND_LOC | |
2255 | || val == PRINT_NOTHING) | |
2256 | return val; | |
2257 | } | |
c906108c | 2258 | |
e514a9d6 JM |
2259 | /* We reached the end of the chain, or we got a null BS to start |
2260 | with and nothing was printed. */ | |
917317f4 | 2261 | return PRINT_UNKNOWN; |
c906108c SS |
2262 | } |
2263 | ||
2264 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2265 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2266 | The argument is a "struct expression *" that has been cast to char * to | |
2267 | make it pass through catch_errors. */ | |
2268 | ||
2269 | static int | |
2270 | breakpoint_cond_eval (exp) | |
2271 | PTR exp; | |
2272 | { | |
2273 | value_ptr mark = value_mark (); | |
c5aa993b | 2274 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2275 | value_free_to_mark (mark); |
2276 | return i; | |
2277 | } | |
2278 | ||
2279 | /* Allocate a new bpstat and chain it to the current one. */ | |
2280 | ||
2281 | static bpstat | |
2282 | bpstat_alloc (b, cbs) | |
2283 | register struct breakpoint *b; | |
c5aa993b | 2284 | bpstat cbs; /* Current "bs" value */ |
c906108c SS |
2285 | { |
2286 | bpstat bs; | |
2287 | ||
2288 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2289 | cbs->next = bs; | |
2290 | bs->breakpoint_at = b; | |
2291 | /* If the condition is false, etc., don't do the commands. */ | |
2292 | bs->commands = NULL; | |
2293 | bs->old_val = NULL; | |
2294 | bs->print_it = print_it_normal; | |
2295 | return bs; | |
2296 | } | |
2297 | \f | |
2298 | /* Possible return values for watchpoint_check (this can't be an enum | |
2299 | because of check_errors). */ | |
2300 | /* The watchpoint has been deleted. */ | |
2301 | #define WP_DELETED 1 | |
2302 | /* The value has changed. */ | |
2303 | #define WP_VALUE_CHANGED 2 | |
2304 | /* The value has not changed. */ | |
2305 | #define WP_VALUE_NOT_CHANGED 3 | |
2306 | ||
2307 | #define BP_TEMPFLAG 1 | |
2308 | #define BP_HARDWAREFLAG 2 | |
2309 | ||
2310 | /* Check watchpoint condition. */ | |
2311 | ||
2312 | static int | |
2313 | watchpoint_check (p) | |
2314 | PTR p; | |
2315 | { | |
2316 | bpstat bs = (bpstat) p; | |
2317 | struct breakpoint *b; | |
2318 | struct frame_info *fr; | |
2319 | int within_current_scope; | |
2320 | ||
2321 | b = bs->breakpoint_at; | |
2322 | ||
2323 | if (b->exp_valid_block == NULL) | |
2324 | within_current_scope = 1; | |
2325 | else | |
2326 | { | |
2327 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2328 | any chance of handling watchpoints on local variables, we'll need |
2329 | the frame chain (so we can determine if we're in scope). */ | |
2330 | reinit_frame_cache (); | |
c906108c SS |
2331 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
2332 | within_current_scope = (fr != NULL); | |
2333 | if (within_current_scope) | |
2334 | /* If we end up stopping, the current frame will get selected | |
2335 | in normal_stop. So this call to select_frame won't affect | |
2336 | the user. */ | |
2337 | select_frame (fr, -1); | |
2338 | } | |
c5aa993b | 2339 | |
c906108c SS |
2340 | if (within_current_scope) |
2341 | { | |
2342 | /* We use value_{,free_to_}mark because it could be a | |
2343 | *long* time before we return to the command level and | |
c5aa993b JM |
2344 | call free_all_values. We can't call free_all_values because |
2345 | we might be in the middle of evaluating a function call. */ | |
c906108c SS |
2346 | |
2347 | value_ptr mark = value_mark (); | |
2348 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
2349 | if (!value_equal (b->val, new_val)) | |
2350 | { | |
2351 | release_value (new_val); | |
2352 | value_free_to_mark (mark); | |
2353 | bs->old_val = b->val; | |
2354 | b->val = new_val; | |
2355 | /* We will stop here */ | |
2356 | return WP_VALUE_CHANGED; | |
2357 | } | |
2358 | else | |
2359 | { | |
2360 | /* Nothing changed, don't do anything. */ | |
2361 | value_free_to_mark (mark); | |
2362 | /* We won't stop here */ | |
2363 | return WP_VALUE_NOT_CHANGED; | |
2364 | } | |
2365 | } | |
2366 | else | |
2367 | { | |
2368 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2369 | if we temporarily ignored the watchpoint, then when |
2370 | we reenter the block in which it is valid it contains | |
2371 | garbage (in the case of a function, it may have two | |
2372 | garbage values, one before and one after the prologue). | |
2373 | So we can't even detect the first assignment to it and | |
2374 | watch after that (since the garbage may or may not equal | |
2375 | the first value assigned). */ | |
4ce44c66 JM |
2376 | /* We print all the stop information in print_it_typical(), but |
2377 | in this case, by the time we call print_it_typical() this bp | |
2378 | will be deleted already. So we have no choice but print the | |
2379 | information here. */ | |
8b93c638 | 2380 | #ifdef UI_OUT |
fb40c209 AC |
2381 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2382 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); | |
8b93c638 JM |
2383 | ui_out_text (uiout, "\nWatchpoint "); |
2384 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2385 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2386 | which its expression is valid.\n"); | |
2387 | #else | |
c906108c SS |
2388 | printf_filtered ("\ |
2389 | Watchpoint %d deleted because the program has left the block in\n\ | |
2390 | which its expression is valid.\n", bs->breakpoint_at->number); | |
8b93c638 | 2391 | #endif |
4ce44c66 | 2392 | |
c906108c SS |
2393 | if (b->related_breakpoint) |
2394 | b->related_breakpoint->disposition = del_at_next_stop; | |
2395 | b->disposition = del_at_next_stop; | |
2396 | ||
2397 | return WP_DELETED; | |
2398 | } | |
2399 | } | |
2400 | ||
c906108c SS |
2401 | /* Get a bpstat associated with having just stopped at address *PC |
2402 | and frame address CORE_ADDRESS. Update *PC to point at the | |
2403 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
2404 | if this is known to not be a real breakpoint (it could still be a | |
2405 | watchpoint, though). */ | |
2406 | ||
2407 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2408 | don't understand this stop. Result is a chain of bpstat's such that: | |
2409 | ||
c5aa993b | 2410 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2411 | |
c5aa993b | 2412 | if we understand why we stopped, the result is not null. |
c906108c | 2413 | |
c5aa993b JM |
2414 | Each element of the chain refers to a particular breakpoint or |
2415 | watchpoint at which we have stopped. (We may have stopped for | |
2416 | several reasons concurrently.) | |
c906108c | 2417 | |
c5aa993b JM |
2418 | Each element of the chain has valid next, breakpoint_at, |
2419 | commands, FIXME??? fields. */ | |
c906108c SS |
2420 | |
2421 | bpstat | |
2422 | bpstat_stop_status (pc, not_a_breakpoint) | |
2423 | CORE_ADDR *pc; | |
2424 | int not_a_breakpoint; | |
2425 | { | |
2426 | register struct breakpoint *b, *temp; | |
2427 | CORE_ADDR bp_addr; | |
2428 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2429 | int real_breakpoint = 0; | |
2430 | /* Root of the chain of bpstat's */ | |
2431 | struct bpstats root_bs[1]; | |
2432 | /* Pointer to the last thing in the chain currently. */ | |
2433 | bpstat bs = root_bs; | |
2434 | static char message1[] = | |
c5aa993b JM |
2435 | "Error evaluating expression for watchpoint %d\n"; |
2436 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c SS |
2437 | |
2438 | /* Get the address where the breakpoint would have been. */ | |
6426a772 JM |
2439 | bp_addr = *pc - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P ? |
2440 | 0 : DECR_PC_AFTER_BREAK); | |
c906108c SS |
2441 | |
2442 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
2443 | { |
2444 | if (b->enable == disabled | |
2445 | || b->enable == shlib_disabled | |
2446 | || b->enable == call_disabled) | |
2447 | continue; | |
2448 | ||
2449 | if (b->type != bp_watchpoint | |
2450 | && b->type != bp_hardware_watchpoint | |
2451 | && b->type != bp_read_watchpoint | |
2452 | && b->type != bp_access_watchpoint | |
2453 | && b->type != bp_hardware_breakpoint | |
2454 | && b->type != bp_catch_fork | |
2455 | && b->type != bp_catch_vfork | |
2456 | && b->type != bp_catch_exec | |
2457 | && b->type != bp_catch_catch | |
2458 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
2459 | if (b->address != bp_addr || /* address doesn't match or */ | |
2460 | (overlay_debugging && /* overlay doesn't match */ | |
2461 | section_is_overlay (b->section) && | |
2462 | !section_is_mapped (b->section))) | |
c906108c SS |
2463 | continue; |
2464 | ||
c5aa993b JM |
2465 | if (b->type == bp_hardware_breakpoint |
2466 | && b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2467 | continue; | |
2468 | ||
c5aa993b JM |
2469 | /* Is this a catchpoint of a load or unload? If so, did we |
2470 | get a load or unload of the specified library? If not, | |
2471 | ignore it. */ | |
2472 | if ((b->type == bp_catch_load) | |
c906108c | 2473 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
c5aa993b JM |
2474 | && (!SOLIB_HAVE_LOAD_EVENT (inferior_pid) |
2475 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2476 | && (strcmp (b->dll_pathname, |
2477 | SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2478 | != 0))) | |
c906108c | 2479 | #endif |
c5aa993b JM |
2480 | ) |
2481 | continue; | |
2482 | ||
2483 | if ((b->type == bp_catch_unload) | |
c906108c | 2484 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
c5aa993b JM |
2485 | && (!SOLIB_HAVE_UNLOAD_EVENT (inferior_pid) |
2486 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2487 | && (strcmp (b->dll_pathname, |
2488 | SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2489 | != 0))) | |
c906108c | 2490 | #endif |
c5aa993b JM |
2491 | ) |
2492 | continue; | |
c906108c | 2493 | |
c5aa993b JM |
2494 | if ((b->type == bp_catch_fork) |
2495 | && !target_has_forked (inferior_pid, &b->forked_inferior_pid)) | |
2496 | continue; | |
c906108c | 2497 | |
c5aa993b JM |
2498 | if ((b->type == bp_catch_vfork) |
2499 | && !target_has_vforked (inferior_pid, &b->forked_inferior_pid)) | |
2500 | continue; | |
c906108c | 2501 | |
c5aa993b JM |
2502 | if ((b->type == bp_catch_exec) |
2503 | && !target_has_execd (inferior_pid, &b->exec_pathname)) | |
2504 | continue; | |
c906108c | 2505 | |
c5aa993b JM |
2506 | if (ep_is_exception_catchpoint (b) && |
2507 | !(current_exception_event = target_get_current_exception_event ())) | |
2508 | continue; | |
c906108c | 2509 | |
c5aa993b JM |
2510 | /* Come here if it's a watchpoint, or if the break address matches */ |
2511 | ||
2512 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2513 | ||
2514 | /* Watchpoints may change this, if not found to have triggered. */ | |
2515 | bs->stop = 1; | |
2516 | bs->print = 1; | |
2517 | ||
2518 | sprintf (message, message1, b->number); | |
53a5351d JM |
2519 | if (b->type == bp_watchpoint || |
2520 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2521 | { |
53a5351d JM |
2522 | switch (catch_errors (watchpoint_check, bs, message, |
2523 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2524 | { |
2525 | case WP_DELETED: | |
2526 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2527 | /* Actually this is superfluous, because by the time we |
2528 | call print_it_typical() the wp will be already deleted, | |
2529 | and the function will return immediately. */ | |
c5aa993b JM |
2530 | bs->print_it = print_it_done; |
2531 | /* Stop. */ | |
2532 | break; | |
2533 | case WP_VALUE_CHANGED: | |
2534 | /* Stop. */ | |
2535 | ++(b->hit_count); | |
2536 | break; | |
2537 | case WP_VALUE_NOT_CHANGED: | |
2538 | /* Don't stop. */ | |
2539 | bs->print_it = print_it_noop; | |
2540 | bs->stop = 0; | |
c5aa993b JM |
2541 | continue; |
2542 | default: | |
2543 | /* Can't happen. */ | |
2544 | /* FALLTHROUGH */ | |
2545 | case 0: | |
2546 | /* Error from catch_errors. */ | |
2547 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2548 | if (b->related_breakpoint) | |
2549 | b->related_breakpoint->disposition = del_at_next_stop; | |
2550 | b->disposition = del_at_next_stop; | |
2551 | /* We've already printed what needs to be printed. */ | |
2552 | bs->print_it = print_it_done; | |
2553 | ||
2554 | /* Stop. */ | |
2555 | break; | |
2556 | } | |
2557 | } | |
53a5351d JM |
2558 | else if (b->type == bp_read_watchpoint || |
2559 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2560 | { |
2561 | CORE_ADDR addr; | |
2562 | value_ptr v; | |
2563 | int found = 0; | |
2564 | ||
2565 | addr = target_stopped_data_address (); | |
2566 | if (addr == 0) | |
2567 | continue; | |
2568 | for (v = b->val_chain; v; v = v->next) | |
2569 | { | |
5c44784c JM |
2570 | if (VALUE_LVAL (v) == lval_memory |
2571 | && ! VALUE_LAZY (v)) | |
c5aa993b JM |
2572 | { |
2573 | CORE_ADDR vaddr; | |
2574 | ||
2575 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
53a5351d JM |
2576 | /* Exact match not required. Within range is sufficient. |
2577 | */ | |
2578 | if (addr >= vaddr && | |
2579 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
c5aa993b JM |
2580 | found = 1; |
2581 | } | |
2582 | } | |
2583 | if (found) | |
53a5351d JM |
2584 | switch (catch_errors (watchpoint_check, bs, message, |
2585 | RETURN_MASK_ALL)) | |
c906108c SS |
2586 | { |
2587 | case WP_DELETED: | |
2588 | /* We've already printed what needs to be printed. */ | |
2589 | bs->print_it = print_it_done; | |
2590 | /* Stop. */ | |
2591 | break; | |
2592 | case WP_VALUE_CHANGED: | |
c5aa993b | 2593 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2594 | /* Stop. */ |
2595 | ++(b->hit_count); | |
2596 | break; | |
c906108c SS |
2597 | default: |
2598 | /* Can't happen. */ | |
c906108c SS |
2599 | case 0: |
2600 | /* Error from catch_errors. */ | |
2601 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2602 | if (b->related_breakpoint) | |
2603 | b->related_breakpoint->disposition = del_at_next_stop; | |
2604 | b->disposition = del_at_next_stop; | |
2605 | /* We've already printed what needs to be printed. */ | |
2606 | bs->print_it = print_it_done; | |
c906108c SS |
2607 | break; |
2608 | } | |
53a5351d JM |
2609 | else /* found == 0 */ |
2610 | { | |
2611 | /* This is a case where some watchpoint(s) triggered, | |
2612 | but not at the address of this watchpoint (FOUND | |
2613 | was left zero). So don't print anything for this | |
2614 | watchpoint. */ | |
2615 | bs->print_it = print_it_noop; | |
2616 | bs->stop = 0; | |
2617 | continue; | |
2618 | } | |
c5aa993b JM |
2619 | } |
2620 | else | |
2621 | { | |
2622 | /* By definition, an encountered breakpoint is a triggered | |
2623 | breakpoint. */ | |
2624 | ++(b->hit_count); | |
c906108c | 2625 | |
c5aa993b JM |
2626 | real_breakpoint = 1; |
2627 | } | |
2628 | ||
ed9a39eb JM |
2629 | if (b->frame && |
2630 | b->frame != (get_current_frame ())->frame) | |
c5aa993b JM |
2631 | bs->stop = 0; |
2632 | else | |
2633 | { | |
2634 | int value_is_zero = 0; | |
2635 | ||
2636 | if (b->cond) | |
2637 | { | |
2638 | /* Need to select the frame, with all that implies | |
2639 | so that the conditions will have the right context. */ | |
2640 | select_frame (get_current_frame (), 0); | |
2641 | value_is_zero | |
2642 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2643 | "Error in testing breakpoint condition:\n", | |
2644 | RETURN_MASK_ALL); | |
2645 | /* FIXME-someday, should give breakpoint # */ | |
2646 | free_all_values (); | |
2647 | } | |
2648 | if (b->cond && value_is_zero) | |
2649 | { | |
2650 | bs->stop = 0; | |
2651 | /* Don't consider this a hit. */ | |
2652 | --(b->hit_count); | |
2653 | } | |
2654 | else if (b->ignore_count > 0) | |
2655 | { | |
2656 | b->ignore_count--; | |
5c44784c | 2657 | annotate_ignore_count_change (); |
c5aa993b JM |
2658 | bs->stop = 0; |
2659 | } | |
2660 | else | |
2661 | { | |
2662 | /* We will stop here */ | |
2663 | if (b->disposition == disable) | |
2664 | b->enable = disabled; | |
2665 | bs->commands = b->commands; | |
2666 | if (b->silent) | |
2667 | bs->print = 0; | |
2668 | if (bs->commands && | |
2669 | (STREQ ("silent", bs->commands->line) || | |
2670 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2671 | { | |
2672 | bs->commands = bs->commands->next; | |
c906108c | 2673 | bs->print = 0; |
c5aa993b JM |
2674 | } |
2675 | } | |
2676 | } | |
2677 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2678 | if (bs->stop == 0 || bs->print == 0) | |
2679 | bs->print_it = print_it_noop; | |
2680 | } | |
c906108c SS |
2681 | |
2682 | bs->next = NULL; /* Terminate the chain */ | |
2683 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2684 | ||
2685 | if (real_breakpoint && bs) | |
2686 | { | |
c5aa993b | 2687 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2688 | { |
c5aa993b | 2689 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2690 | { |
2691 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2692 | write_pc (*pc); | |
2693 | } | |
2694 | } | |
2695 | else | |
2696 | { | |
2697 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2698 | { | |
2699 | *pc = bp_addr; | |
2700 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2701 | SHIFT_INST_REGS (); |
c906108c SS |
2702 | #else /* No SHIFT_INST_REGS. */ |
2703 | write_pc (bp_addr); | |
2704 | #endif /* No SHIFT_INST_REGS. */ | |
2705 | } | |
2706 | } | |
2707 | } | |
2708 | ||
2709 | /* The value of a hardware watchpoint hasn't changed, but the | |
2710 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2711 | if (bs && !bs->stop && |
c906108c SS |
2712 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2713 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2714 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2715 | { | |
2716 | remove_breakpoints (); | |
2717 | insert_breakpoints (); | |
2718 | } | |
2719 | return bs; | |
2720 | } | |
2721 | \f | |
2722 | /* Tell what to do about this bpstat. */ | |
2723 | struct bpstat_what | |
2724 | bpstat_what (bs) | |
2725 | bpstat bs; | |
2726 | { | |
2727 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2728 | enum class |
2729 | { | |
2730 | /* This bpstat element has no effect on the main_action. */ | |
2731 | no_effect = 0, | |
2732 | ||
2733 | /* There was a watchpoint, stop but don't print. */ | |
2734 | wp_silent, | |
c906108c | 2735 | |
c5aa993b JM |
2736 | /* There was a watchpoint, stop and print. */ |
2737 | wp_noisy, | |
c906108c | 2738 | |
c5aa993b JM |
2739 | /* There was a breakpoint but we're not stopping. */ |
2740 | bp_nostop, | |
c906108c | 2741 | |
c5aa993b JM |
2742 | /* There was a breakpoint, stop but don't print. */ |
2743 | bp_silent, | |
c906108c | 2744 | |
c5aa993b JM |
2745 | /* There was a breakpoint, stop and print. */ |
2746 | bp_noisy, | |
c906108c | 2747 | |
c5aa993b JM |
2748 | /* We hit the longjmp breakpoint. */ |
2749 | long_jump, | |
c906108c | 2750 | |
c5aa993b JM |
2751 | /* We hit the longjmp_resume breakpoint. */ |
2752 | long_resume, | |
c906108c | 2753 | |
c5aa993b JM |
2754 | /* We hit the step_resume breakpoint. */ |
2755 | step_resume, | |
c906108c | 2756 | |
c5aa993b JM |
2757 | /* We hit the through_sigtramp breakpoint. */ |
2758 | through_sig, | |
c906108c | 2759 | |
c5aa993b JM |
2760 | /* We hit the shared library event breakpoint. */ |
2761 | shlib_event, | |
c906108c | 2762 | |
c5aa993b JM |
2763 | /* We caught a shared library event. */ |
2764 | catch_shlib_event, | |
c906108c | 2765 | |
c5aa993b JM |
2766 | /* This is just used to count how many enums there are. */ |
2767 | class_last | |
c906108c SS |
2768 | }; |
2769 | ||
2770 | /* Here is the table which drives this routine. So that we can | |
2771 | format it pretty, we define some abbreviations for the | |
2772 | enum bpstat_what codes. */ | |
2773 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2774 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2775 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2776 | #define sgl BPSTAT_WHAT_SINGLE | |
2777 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2778 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2779 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2780 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2781 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2782 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2783 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2784 | ||
2785 | /* "Can't happen." Might want to print an error message. | |
2786 | abort() is not out of the question, but chances are GDB is just | |
2787 | a bit confused, not unusable. */ | |
2788 | #define err BPSTAT_WHAT_STOP_NOISY | |
2789 | ||
2790 | /* Given an old action and a class, come up with a new action. */ | |
2791 | /* One interesting property of this table is that wp_silent is the same | |
2792 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2793 | after stopping, the check for whether to step over a breakpoint | |
2794 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2795 | reference to how we stopped. We retain separate wp_silent and |
2796 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2797 | |
2798 | Another possibly interesting property of this table is that | |
2799 | there's a partial ordering, priority-like, of the actions. Once | |
2800 | you've decided that some action is appropriate, you'll never go | |
2801 | back and decide something of a lower priority is better. The | |
2802 | ordering is: | |
2803 | ||
c5aa993b JM |
2804 | kc < clr sgl shl slr sn sr ss ts |
2805 | sgl < clrs shl shlr slr sn sr ss ts | |
2806 | slr < err shl shlr sn sr ss ts | |
2807 | clr < clrs err shl shlr sn sr ss ts | |
2808 | clrs < err shl shlr sn sr ss ts | |
2809 | ss < shl shlr sn sr ts | |
2810 | sn < shl shlr sr ts | |
2811 | sr < shl shlr ts | |
2812 | shl < shlr | |
2813 | ts < | |
2814 | shlr < | |
2815 | ||
43ff13b4 JM |
2816 | What I think this means is that we don't need a damned table |
2817 | here. If you just put the rows and columns in the right order, | |
2818 | it'd look awfully regular. We could simply walk the bpstat list | |
2819 | and choose the highest priority action we find, with a little | |
2820 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2821 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2822 | is messy anyway). */ | |
c906108c SS |
2823 | |
2824 | /* step_resume entries: a step resume breakpoint overrides another | |
2825 | breakpoint of signal handling (see comment in wait_for_inferior | |
2826 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
2827 | /* We handle the through_sigtramp_breakpoint the same way; having both | |
2828 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2829 | ||
2830 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2831 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2832 | { | |
2833 | /* old action */ | |
2834 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2835 | */ | |
2836 | /*no_effect */ | |
2837 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2838 | /*wp_silent */ | |
2839 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2840 | /*wp_noisy */ | |
2841 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2842 | /*bp_nostop */ | |
2843 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2844 | /*bp_silent */ | |
2845 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2846 | /*bp_noisy */ | |
2847 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2848 | /*long_jump */ | |
2849 | {slr, ss, sn, slr, err, err, err, sr, ts, shl, shlr}, | |
2850 | /*long_resume */ | |
2851 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2852 | /*step_resume */ | |
2853 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2854 | /*through_sig */ | |
2855 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2856 | /*shlib */ | |
2857 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2858 | /*catch_shlib */ | |
2859 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2860 | }; | |
c906108c SS |
2861 | |
2862 | #undef kc | |
2863 | #undef ss | |
2864 | #undef sn | |
2865 | #undef sgl | |
2866 | #undef slr | |
2867 | #undef clr | |
2868 | #undef clrs | |
2869 | #undef err | |
2870 | #undef sr | |
2871 | #undef ts | |
2872 | #undef shl | |
2873 | #undef shlr | |
2874 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2875 | struct bpstat_what retval; | |
2876 | ||
2877 | retval.call_dummy = 0; | |
2878 | for (; bs != NULL; bs = bs->next) | |
2879 | { | |
2880 | enum class bs_class = no_effect; | |
2881 | if (bs->breakpoint_at == NULL) | |
2882 | /* I suspect this can happen if it was a momentary breakpoint | |
2883 | which has since been deleted. */ | |
2884 | continue; | |
2885 | switch (bs->breakpoint_at->type) | |
2886 | { | |
2887 | case bp_none: | |
2888 | continue; | |
2889 | ||
2890 | case bp_breakpoint: | |
2891 | case bp_hardware_breakpoint: | |
2892 | case bp_until: | |
2893 | case bp_finish: | |
2894 | if (bs->stop) | |
2895 | { | |
2896 | if (bs->print) | |
2897 | bs_class = bp_noisy; | |
2898 | else | |
2899 | bs_class = bp_silent; | |
2900 | } | |
2901 | else | |
2902 | bs_class = bp_nostop; | |
2903 | break; | |
2904 | case bp_watchpoint: | |
2905 | case bp_hardware_watchpoint: | |
2906 | case bp_read_watchpoint: | |
2907 | case bp_access_watchpoint: | |
2908 | if (bs->stop) | |
2909 | { | |
2910 | if (bs->print) | |
2911 | bs_class = wp_noisy; | |
2912 | else | |
2913 | bs_class = wp_silent; | |
2914 | } | |
2915 | else | |
53a5351d JM |
2916 | /* There was a watchpoint, but we're not stopping. |
2917 | This requires no further action. */ | |
c906108c SS |
2918 | bs_class = no_effect; |
2919 | break; | |
2920 | case bp_longjmp: | |
2921 | bs_class = long_jump; | |
2922 | break; | |
2923 | case bp_longjmp_resume: | |
2924 | bs_class = long_resume; | |
2925 | break; | |
2926 | case bp_step_resume: | |
2927 | if (bs->stop) | |
2928 | { | |
2929 | bs_class = step_resume; | |
2930 | } | |
2931 | else | |
2932 | /* It is for the wrong frame. */ | |
2933 | bs_class = bp_nostop; | |
2934 | break; | |
2935 | case bp_through_sigtramp: | |
2936 | bs_class = through_sig; | |
2937 | break; | |
2938 | case bp_watchpoint_scope: | |
2939 | bs_class = bp_nostop; | |
2940 | break; | |
c5aa993b JM |
2941 | case bp_shlib_event: |
2942 | bs_class = shlib_event; | |
2943 | break; | |
c4093a6a JM |
2944 | case bp_thread_event: |
2945 | bs_class = bp_nostop; | |
2946 | break; | |
c5aa993b JM |
2947 | case bp_catch_load: |
2948 | case bp_catch_unload: | |
2949 | /* Only if this catchpoint triggered should we cause the | |
2950 | step-out-of-dld behaviour. Otherwise, we ignore this | |
2951 | catchpoint. */ | |
2952 | if (bs->stop) | |
2953 | bs_class = catch_shlib_event; | |
2954 | else | |
2955 | bs_class = no_effect; | |
2956 | break; | |
2957 | case bp_catch_fork: | |
2958 | case bp_catch_vfork: | |
2959 | case bp_catch_exec: | |
2960 | if (bs->stop) | |
2961 | { | |
2962 | if (bs->print) | |
2963 | bs_class = bp_noisy; | |
2964 | else | |
2965 | bs_class = bp_silent; | |
2966 | } | |
2967 | else | |
53a5351d JM |
2968 | /* There was a catchpoint, but we're not stopping. |
2969 | This requires no further action. */ | |
c5aa993b JM |
2970 | bs_class = no_effect; |
2971 | break; | |
2972 | case bp_catch_catch: | |
2973 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
2974 | bs_class = bp_nostop; | |
2975 | else if (bs->stop) | |
2976 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2977 | break; | |
2978 | case bp_catch_throw: | |
2979 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
2980 | bs_class = bp_nostop; | |
2981 | else if (bs->stop) | |
2982 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 2983 | break; |
c906108c | 2984 | case bp_call_dummy: |
53a5351d JM |
2985 | /* Make sure the action is stop (silent or noisy), |
2986 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
2987 | bs_class = bp_silent; |
2988 | retval.call_dummy = 1; | |
2989 | break; | |
2990 | } | |
c5aa993b | 2991 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
2992 | } |
2993 | retval.main_action = current_action; | |
2994 | return retval; | |
2995 | } | |
2996 | ||
2997 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
2998 | without hardware support). This isn't related to a specific bpstat, | |
2999 | just to things like whether watchpoints are set. */ | |
3000 | ||
c5aa993b | 3001 | int |
c906108c SS |
3002 | bpstat_should_step () |
3003 | { | |
3004 | struct breakpoint *b; | |
3005 | ALL_BREAKPOINTS (b) | |
3006 | if (b->enable == enabled && b->type == bp_watchpoint) | |
c5aa993b | 3007 | return 1; |
c906108c SS |
3008 | return 0; |
3009 | } | |
3010 | ||
3011 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3012 | int | |
3013 | bpstat_have_active_hw_watchpoints () | |
3014 | { | |
3015 | struct breakpoint *b; | |
3016 | ALL_BREAKPOINTS (b) | |
3017 | if ((b->enable == enabled) && | |
c5aa993b JM |
3018 | (b->inserted) && |
3019 | ((b->type == bp_hardware_watchpoint) || | |
3020 | (b->type == bp_read_watchpoint) || | |
3021 | (b->type == bp_access_watchpoint))) | |
3022 | return 1; | |
c906108c SS |
3023 | return 0; |
3024 | } | |
c906108c | 3025 | \f |
c5aa993b | 3026 | |
c906108c SS |
3027 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3028 | function returns another bpstat which contains only the catchpoints | |
3029 | on that first list, if any. */ | |
3030 | void | |
3031 | bpstat_get_triggered_catchpoints (ep_list, cp_list) | |
c5aa993b JM |
3032 | bpstat ep_list; |
3033 | bpstat *cp_list; | |
3034 | { | |
3035 | struct bpstats root_bs[1]; | |
3036 | bpstat bs = root_bs; | |
3037 | struct breakpoint *ep; | |
3038 | char *dll_pathname; | |
3039 | ||
c906108c SS |
3040 | bpstat_clear (cp_list); |
3041 | root_bs->next = NULL; | |
c5aa993b JM |
3042 | |
3043 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3044 | { |
3045 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3046 | ep = ep_list->breakpoint_at; | |
3047 | if (ep == NULL) | |
c5aa993b JM |
3048 | break; |
3049 | if ((ep->type != bp_catch_load) && | |
3050 | (ep->type != bp_catch_unload) && | |
3051 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3052 | (ep->type != bp_catch_throw)) |
3053 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3054 | continue; |
3055 | ||
c906108c SS |
3056 | /* Yes; add it to the list. */ |
3057 | bs = bpstat_alloc (ep, bs); | |
3058 | *bs = *ep_list; | |
3059 | bs->next = NULL; | |
3060 | bs = root_bs->next; | |
c5aa993b | 3061 | |
c906108c SS |
3062 | #if defined(SOLIB_ADD) |
3063 | /* Also, for each triggered catchpoint, tag it with the name of | |
3064 | the library that caused this trigger. (We copy the name now, | |
3065 | because it's only guaranteed to be available NOW, when the | |
3066 | catchpoint triggers. Clients who may wish to know the name | |
3067 | later must get it from the catchpoint itself.) */ | |
3068 | if (ep->triggered_dll_pathname != NULL) | |
c5aa993b | 3069 | free (ep->triggered_dll_pathname); |
c906108c | 3070 | if (ep->type == bp_catch_load) |
c5aa993b | 3071 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c | 3072 | else |
c5aa993b | 3073 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c SS |
3074 | #else |
3075 | dll_pathname = NULL; | |
3076 | #endif | |
3077 | if (dll_pathname) | |
3078 | { | |
53a5351d JM |
3079 | ep->triggered_dll_pathname = (char *) |
3080 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3081 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3082 | } | |
3083 | else | |
3084 | ep->triggered_dll_pathname = NULL; | |
3085 | } | |
c5aa993b | 3086 | |
c906108c SS |
3087 | *cp_list = bs; |
3088 | } | |
3089 | ||
c4093a6a | 3090 | /* Print B to gdb_stdout. */ |
c906108c | 3091 | static void |
c4093a6a JM |
3092 | print_one_breakpoint (struct breakpoint *b, |
3093 | CORE_ADDR *last_addr) | |
c906108c | 3094 | { |
c906108c SS |
3095 | register struct command_line *l; |
3096 | register struct symbol *sym; | |
c4093a6a JM |
3097 | struct ep_type_description |
3098 | { | |
3099 | enum bptype type; | |
3100 | char *description; | |
3101 | }; | |
3102 | static struct ep_type_description bptypes[] = | |
c906108c | 3103 | { |
c5aa993b JM |
3104 | {bp_none, "?deleted?"}, |
3105 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3106 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3107 | {bp_until, "until"}, |
3108 | {bp_finish, "finish"}, | |
3109 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3110 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3111 | {bp_read_watchpoint, "read watchpoint"}, |
3112 | {bp_access_watchpoint, "acc watchpoint"}, | |
3113 | {bp_longjmp, "longjmp"}, | |
3114 | {bp_longjmp_resume, "longjmp resume"}, | |
3115 | {bp_step_resume, "step resume"}, | |
3116 | {bp_through_sigtramp, "sigtramp"}, | |
3117 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3118 | {bp_call_dummy, "call dummy"}, | |
3119 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3120 | {bp_thread_event, "thread events"}, |
c5aa993b JM |
3121 | {bp_catch_load, "catch load"}, |
3122 | {bp_catch_unload, "catch unload"}, | |
3123 | {bp_catch_fork, "catch fork"}, | |
3124 | {bp_catch_vfork, "catch vfork"}, | |
3125 | {bp_catch_exec, "catch exec"}, | |
3126 | {bp_catch_catch, "catch catch"}, | |
3127 | {bp_catch_throw, "catch throw"} | |
3128 | }; | |
c4093a6a | 3129 | |
c5aa993b JM |
3130 | static char *bpdisps[] = |
3131 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3132 | static char bpenables[] = "nynny"; |
c906108c | 3133 | char wrap_indent[80]; |
8b93c638 JM |
3134 | #ifdef UI_OUT |
3135 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
3136 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3137 | #endif | |
c906108c | 3138 | |
c4093a6a | 3139 | annotate_record (); |
8b93c638 JM |
3140 | #ifdef UI_OUT |
3141 | ui_out_list_begin (uiout, "bkpt"); | |
3142 | #endif | |
c4093a6a JM |
3143 | |
3144 | /* 1 */ | |
3145 | annotate_field (0); | |
8b93c638 JM |
3146 | #ifdef UI_OUT |
3147 | ui_out_field_int (uiout, "number", b->number); | |
3148 | #else | |
c4093a6a | 3149 | printf_filtered ("%-3d ", b->number); |
8b93c638 | 3150 | #endif |
c4093a6a JM |
3151 | |
3152 | /* 2 */ | |
3153 | annotate_field (1); | |
3154 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3155 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3156 | internal_error ("bptypes table does not describe type #%d.", | |
3157 | (int) b->type); | |
8b93c638 JM |
3158 | #ifdef UI_OUT |
3159 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3160 | #else | |
c4093a6a | 3161 | printf_filtered ("%-14s ", bptypes[(int) b->type].description); |
8b93c638 | 3162 | #endif |
c4093a6a JM |
3163 | |
3164 | /* 3 */ | |
3165 | annotate_field (2); | |
8b93c638 JM |
3166 | #ifdef UI_OUT |
3167 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); | |
3168 | #else | |
c4093a6a | 3169 | printf_filtered ("%-4s ", bpdisps[(int) b->disposition]); |
8b93c638 | 3170 | #endif |
c4093a6a JM |
3171 | |
3172 | /* 4 */ | |
3173 | annotate_field (3); | |
8b93c638 JM |
3174 | #ifdef UI_OUT |
3175 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable]); | |
3176 | ui_out_spaces (uiout, 2); | |
3177 | #else | |
c4093a6a | 3178 | printf_filtered ("%-3c ", bpenables[(int) b->enable]); |
8b93c638 | 3179 | #endif |
c4093a6a JM |
3180 | |
3181 | /* 5 and 6 */ | |
3182 | strcpy (wrap_indent, " "); | |
3183 | if (addressprint) | |
3184 | strcat (wrap_indent, " "); | |
3185 | switch (b->type) | |
c5aa993b | 3186 | { |
c4093a6a JM |
3187 | case bp_none: |
3188 | internal_error ("print_one_breakpoint: bp_none encountered\n"); | |
3189 | break; | |
c906108c | 3190 | |
c4093a6a JM |
3191 | case bp_watchpoint: |
3192 | case bp_hardware_watchpoint: | |
3193 | case bp_read_watchpoint: | |
3194 | case bp_access_watchpoint: | |
3195 | /* Field 4, the address, is omitted (which makes the columns | |
3196 | not line up too nicely with the headers, but the effect | |
3197 | is relatively readable). */ | |
8b93c638 JM |
3198 | #ifdef UI_OUT |
3199 | if (addressprint) | |
3200 | ui_out_field_skip (uiout, "addr"); | |
3201 | annotate_field (5); | |
3202 | print_expression (b->exp, stb->stream); | |
3203 | ui_out_field_stream (uiout, "what", stb); | |
3204 | #else | |
c4093a6a JM |
3205 | annotate_field (5); |
3206 | print_expression (b->exp, gdb_stdout); | |
8b93c638 | 3207 | #endif |
c4093a6a JM |
3208 | break; |
3209 | ||
3210 | case bp_catch_load: | |
3211 | case bp_catch_unload: | |
3212 | /* Field 4, the address, is omitted (which makes the columns | |
3213 | not line up too nicely with the headers, but the effect | |
3214 | is relatively readable). */ | |
8b93c638 JM |
3215 | #ifdef UI_OUT |
3216 | if (addressprint) | |
3217 | ui_out_field_skip (uiout, "addr"); | |
3218 | annotate_field (5); | |
3219 | if (b->dll_pathname == NULL) | |
3220 | { | |
3221 | ui_out_field_string (uiout, "what", "<any library>"); | |
3222 | ui_out_spaces (uiout, 1); | |
3223 | } | |
3224 | else | |
3225 | { | |
3226 | ui_out_text (uiout, "library \""); | |
3227 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3228 | ui_out_text (uiout, "\" "); | |
3229 | } | |
3230 | #else | |
c4093a6a JM |
3231 | annotate_field (5); |
3232 | if (b->dll_pathname == NULL) | |
3233 | printf_filtered ("<any library> "); | |
3234 | else | |
3235 | printf_filtered ("library \"%s\" ", b->dll_pathname); | |
8b93c638 | 3236 | #endif |
c4093a6a JM |
3237 | break; |
3238 | ||
3239 | case bp_catch_fork: | |
3240 | case bp_catch_vfork: | |
3241 | /* Field 4, the address, is omitted (which makes the columns | |
3242 | not line up too nicely with the headers, but the effect | |
3243 | is relatively readable). */ | |
8b93c638 JM |
3244 | #ifdef UI_OUT |
3245 | if (addressprint) | |
3246 | ui_out_field_skip (uiout, "addr"); | |
3247 | annotate_field (5); | |
3248 | if (b->forked_inferior_pid != 0) | |
3249 | { | |
3250 | ui_out_text (uiout, "process "); | |
3251 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3252 | ui_out_spaces (uiout, 1); | |
3253 | } | |
3254 | #else | |
c4093a6a JM |
3255 | annotate_field (5); |
3256 | if (b->forked_inferior_pid != 0) | |
3257 | printf_filtered ("process %d ", b->forked_inferior_pid); | |
3258 | break; | |
8b93c638 | 3259 | #endif |
c4093a6a JM |
3260 | |
3261 | case bp_catch_exec: | |
3262 | /* Field 4, the address, is omitted (which makes the columns | |
3263 | not line up too nicely with the headers, but the effect | |
3264 | is relatively readable). */ | |
8b93c638 JM |
3265 | #ifdef UI_OUT |
3266 | if (addressprint) | |
3267 | ui_out_field_skip (uiout, "addr"); | |
3268 | annotate_field (5); | |
3269 | if (b->exec_pathname != NULL) | |
3270 | { | |
3271 | ui_out_text (uiout, "program \""); | |
3272 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3273 | ui_out_text (uiout, "\" "); | |
3274 | } | |
3275 | #else | |
c4093a6a JM |
3276 | annotate_field (5); |
3277 | if (b->exec_pathname != NULL) | |
3278 | printf_filtered ("program \"%s\" ", b->exec_pathname); | |
8b93c638 | 3279 | #endif |
c4093a6a | 3280 | break; |
c906108c | 3281 | |
c4093a6a JM |
3282 | case bp_catch_catch: |
3283 | /* Field 4, the address, is omitted (which makes the columns | |
3284 | not line up too nicely with the headers, but the effect | |
3285 | is relatively readable). */ | |
8b93c638 JM |
3286 | #ifdef UI_OUT |
3287 | if (addressprint) | |
3288 | ui_out_field_skip (uiout, "addr"); | |
3289 | annotate_field (5); | |
3290 | ui_out_field_string (uiout, "what", "exception catch"); | |
3291 | ui_out_spaces (uiout, 1); | |
3292 | #else | |
c4093a6a JM |
3293 | annotate_field (5); |
3294 | printf_filtered ("exception catch "); | |
8b93c638 | 3295 | #endif |
c4093a6a | 3296 | break; |
c906108c | 3297 | |
c4093a6a JM |
3298 | case bp_catch_throw: |
3299 | /* Field 4, the address, is omitted (which makes the columns | |
3300 | not line up too nicely with the headers, but the effect | |
3301 | is relatively readable). */ | |
8b93c638 JM |
3302 | #ifdef UI_OUT |
3303 | if (addressprint) | |
3304 | ui_out_field_skip (uiout, "addr"); | |
3305 | annotate_field (5); | |
3306 | ui_out_field_string (uiout, "what", "exception throw"); | |
3307 | ui_out_spaces (uiout, 1); | |
3308 | #else | |
c4093a6a JM |
3309 | annotate_field (5); |
3310 | printf_filtered ("exception throw "); | |
8b93c638 | 3311 | #endif |
c4093a6a JM |
3312 | break; |
3313 | ||
3314 | case bp_breakpoint: | |
3315 | case bp_hardware_breakpoint: | |
3316 | case bp_until: | |
3317 | case bp_finish: | |
3318 | case bp_longjmp: | |
3319 | case bp_longjmp_resume: | |
3320 | case bp_step_resume: | |
3321 | case bp_through_sigtramp: | |
3322 | case bp_watchpoint_scope: | |
3323 | case bp_call_dummy: | |
3324 | case bp_shlib_event: | |
3325 | case bp_thread_event: | |
8b93c638 JM |
3326 | #ifdef UI_OUT |
3327 | if (addressprint) | |
3328 | { | |
3329 | annotate_field (4); | |
3330 | ui_out_field_core_addr (uiout, "addr", b->address); | |
3331 | } | |
3332 | annotate_field (5); | |
3333 | *last_addr = b->address; | |
3334 | if (b->source_file) | |
3335 | { | |
3336 | sym = find_pc_sect_function (b->address, b->section); | |
3337 | if (sym) | |
3338 | { | |
3339 | ui_out_text (uiout, "in "); | |
3340 | ui_out_field_string (uiout, "func", | |
3341 | SYMBOL_SOURCE_NAME (sym)); | |
3342 | ui_out_wrap_hint (uiout, wrap_indent); | |
3343 | ui_out_text (uiout, " at "); | |
3344 | } | |
3345 | ui_out_field_string (uiout, "file", b->source_file); | |
3346 | ui_out_text (uiout, ":"); | |
3347 | ui_out_field_int (uiout, "line", b->line_number); | |
3348 | } | |
3349 | else | |
3350 | { | |
3351 | print_address_symbolic (b->address, stb->stream, demangle, ""); | |
3352 | ui_out_field_stream (uiout, "at", stb); | |
3353 | } | |
3354 | #else | |
c5aa993b | 3355 | if (addressprint) |
c5aa993b | 3356 | { |
c4093a6a JM |
3357 | annotate_field (4); |
3358 | /* FIXME-32x64: need a print_address_numeric with | |
3359 | field width */ | |
3360 | printf_filtered | |
3361 | ("%s ", | |
3362 | local_hex_string_custom | |
3363 | ((unsigned long) b->address, "08l")); | |
3364 | } | |
3365 | annotate_field (5); | |
3366 | *last_addr = b->address; | |
3367 | if (b->source_file) | |
3368 | { | |
3369 | sym = find_pc_sect_function (b->address, b->section); | |
3370 | if (sym) | |
c5aa993b | 3371 | { |
c4093a6a JM |
3372 | fputs_filtered ("in ", gdb_stdout); |
3373 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
3374 | wrap_here (wrap_indent); | |
3375 | fputs_filtered (" at ", gdb_stdout); | |
c5aa993b | 3376 | } |
c4093a6a JM |
3377 | fputs_filtered (b->source_file, gdb_stdout); |
3378 | printf_filtered (":%d", b->line_number); | |
c5aa993b | 3379 | } |
c4093a6a JM |
3380 | else |
3381 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); | |
8b93c638 | 3382 | #endif |
c4093a6a JM |
3383 | break; |
3384 | } | |
3385 | ||
3386 | if (b->thread != -1) | |
3387 | { | |
8b93c638 JM |
3388 | #ifdef UI_OUT |
3389 | /* FIXME: This seems to be redundant and lost here; see the | |
3390 | "stop only in" line a little further down. */ | |
3391 | ui_out_text (uiout, " thread "); | |
3392 | ui_out_field_int (uiout, "thread", b->thread); | |
3393 | #else | |
c4093a6a | 3394 | printf_filtered (" thread %d", b->thread); |
8b93c638 | 3395 | #endif |
c4093a6a JM |
3396 | } |
3397 | ||
8b93c638 JM |
3398 | #ifdef UI_OUT |
3399 | ui_out_text (uiout, "\n"); | |
3400 | #else | |
c4093a6a | 3401 | printf_filtered ("\n"); |
8b93c638 | 3402 | #endif |
c4093a6a JM |
3403 | |
3404 | if (b->frame) | |
3405 | { | |
3406 | annotate_field (6); | |
8b93c638 JM |
3407 | #ifdef UI_OUT |
3408 | ui_out_text (uiout, "\tstop only in stack frame at "); | |
3409 | ui_out_field_core_addr (uiout, "frame", b->frame); | |
3410 | ui_out_text (uiout, "\n"); | |
3411 | #else | |
c4093a6a JM |
3412 | printf_filtered ("\tstop only in stack frame at "); |
3413 | print_address_numeric (b->frame, 1, gdb_stdout); | |
c5aa993b | 3414 | printf_filtered ("\n"); |
8b93c638 | 3415 | #endif |
c4093a6a JM |
3416 | } |
3417 | ||
3418 | if (b->cond) | |
3419 | { | |
3420 | annotate_field (7); | |
8b93c638 JM |
3421 | #ifdef UI_OUT |
3422 | ui_out_text (uiout, "\tstop only if "); | |
3423 | print_expression (b->cond, stb->stream); | |
3424 | ui_out_field_stream (uiout, "cond", stb); | |
3425 | ui_out_text (uiout, "\n"); | |
3426 | #else | |
c4093a6a JM |
3427 | printf_filtered ("\tstop only if "); |
3428 | print_expression (b->cond, gdb_stdout); | |
3429 | printf_filtered ("\n"); | |
8b93c638 | 3430 | #endif |
c4093a6a JM |
3431 | } |
3432 | ||
3433 | if (b->thread != -1) | |
3434 | { | |
3435 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3436 | #ifdef UI_OUT |
3437 | ui_out_text (uiout, "\tstop only in thread "); | |
3438 | ui_out_field_int (uiout, "thread", b->thread); | |
3439 | ui_out_text (uiout, "\n"); | |
3440 | #else | |
c4093a6a | 3441 | printf_filtered ("\tstop only in thread %d\n", b->thread); |
8b93c638 | 3442 | #endif |
c4093a6a JM |
3443 | } |
3444 | ||
3445 | if (show_breakpoint_hit_counts && b->hit_count) | |
3446 | { | |
3447 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3448 | #ifdef UI_OUT |
3449 | if (ep_is_catchpoint (b)) | |
3450 | ui_out_text (uiout, "\tcatchpoint"); | |
3451 | else | |
3452 | ui_out_text (uiout, "\tbreakpoint"); | |
3453 | ui_out_text (uiout, " already hit "); | |
3454 | ui_out_field_int (uiout, "times", b->hit_count); | |
3455 | if (b->hit_count == 1) | |
3456 | ui_out_text (uiout, " time\n"); | |
3457 | else | |
3458 | ui_out_text (uiout, " times\n"); | |
3459 | #else | |
c4093a6a JM |
3460 | if (ep_is_catchpoint (b)) |
3461 | printf_filtered ("\tcatchpoint"); | |
3462 | else | |
3463 | printf_filtered ("\tbreakpoint"); | |
3464 | printf_filtered (" already hit %d time%s\n", | |
3465 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
8b93c638 | 3466 | #endif |
c4093a6a JM |
3467 | } |
3468 | ||
fb40c209 AC |
3469 | #ifdef UI_OUT |
3470 | /* Output the count also if it is zero, but only if this is | |
3471 | mi. FIXME: Should have a better test for this. */ | |
3472 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
3473 | if (show_breakpoint_hit_counts && b->hit_count == 0) | |
3474 | ui_out_field_int (uiout, "times", b->hit_count); | |
3475 | #endif | |
8b93c638 | 3476 | |
c4093a6a JM |
3477 | if (b->ignore_count) |
3478 | { | |
3479 | annotate_field (8); | |
8b93c638 JM |
3480 | #ifdef UI_OUT |
3481 | ui_out_text (uiout, "\tignore next "); | |
3482 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3483 | ui_out_text (uiout, " hits\n"); | |
3484 | #else | |
c4093a6a | 3485 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); |
8b93c638 | 3486 | #endif |
c4093a6a JM |
3487 | } |
3488 | ||
3489 | if ((l = b->commands)) | |
3490 | { | |
3491 | annotate_field (9); | |
8b93c638 JM |
3492 | #ifdef UI_OUT |
3493 | ui_out_list_begin (uiout, "script"); | |
3494 | print_command_lines (uiout, l, 4); | |
3495 | ui_out_list_end (uiout); | |
3496 | #else | |
c4093a6a | 3497 | while (l) |
c5aa993b | 3498 | { |
c4093a6a JM |
3499 | print_command_line (l, 4, gdb_stdout); |
3500 | l = l->next; | |
c5aa993b | 3501 | } |
8b93c638 | 3502 | #endif |
c4093a6a | 3503 | } |
8b93c638 JM |
3504 | #ifdef UI_OUT |
3505 | ui_out_list_end (uiout); | |
3506 | do_cleanups (old_chain); | |
3507 | #endif | |
c4093a6a | 3508 | } |
c5aa993b | 3509 | |
c4093a6a JM |
3510 | struct captured_breakpoint_query_args |
3511 | { | |
3512 | int bnum; | |
3513 | }; | |
c5aa993b | 3514 | |
c4093a6a JM |
3515 | static int |
3516 | do_captured_breakpoint_query (void *data) | |
3517 | { | |
3518 | struct captured_breakpoint_query_args *args = data; | |
3519 | register struct breakpoint *b; | |
3520 | CORE_ADDR dummy_addr = 0; | |
3521 | ALL_BREAKPOINTS (b) | |
3522 | { | |
3523 | if (args->bnum == b->number) | |
c5aa993b | 3524 | { |
c4093a6a JM |
3525 | print_one_breakpoint (b, &dummy_addr); |
3526 | return GDB_RC_OK; | |
c5aa993b | 3527 | } |
c4093a6a JM |
3528 | } |
3529 | return GDB_RC_NONE; | |
3530 | } | |
c5aa993b | 3531 | |
c4093a6a JM |
3532 | enum gdb_rc |
3533 | gdb_breakpoint_query (/* output object, */ int bnum) | |
3534 | { | |
3535 | struct captured_breakpoint_query_args args; | |
3536 | args.bnum = bnum; | |
3537 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3538 | an error. */ | |
3539 | return catch_errors (do_captured_breakpoint_query, &args, | |
3540 | NULL, RETURN_MASK_ALL); | |
3541 | } | |
c5aa993b | 3542 | |
c4093a6a JM |
3543 | /* Print information on breakpoint number BNUM, or -1 if all. |
3544 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
3545 | is nonzero, process only watchpoints. */ | |
c906108c | 3546 | |
c4093a6a JM |
3547 | static void |
3548 | breakpoint_1 (bnum, allflag) | |
3549 | int bnum; | |
3550 | int allflag; | |
3551 | { | |
3552 | register struct breakpoint *b; | |
3553 | CORE_ADDR last_addr = (CORE_ADDR) -1; | |
3554 | int found_a_breakpoint = 0; | |
3555 | ||
8b93c638 JM |
3556 | #ifdef UI_OUT |
3557 | if (addressprint) | |
3558 | ui_out_table_begin (uiout, 6, "BreakpointTable"); | |
3559 | else | |
3560 | ui_out_table_begin (uiout, 5, "BreakpointTable"); | |
3561 | #endif /* UI_OUT */ | |
3562 | ||
c4093a6a JM |
3563 | ALL_BREAKPOINTS (b) |
3564 | if (bnum == -1 | |
3565 | || bnum == b->number) | |
3566 | { | |
3567 | /* We only print out user settable breakpoints unless the | |
3568 | allflag is set. */ | |
3569 | if (!allflag | |
3570 | && b->type != bp_breakpoint | |
3571 | && b->type != bp_catch_load | |
3572 | && b->type != bp_catch_unload | |
3573 | && b->type != bp_catch_fork | |
3574 | && b->type != bp_catch_vfork | |
3575 | && b->type != bp_catch_exec | |
3576 | && b->type != bp_catch_catch | |
3577 | && b->type != bp_catch_throw | |
3578 | && b->type != bp_hardware_breakpoint | |
3579 | && b->type != bp_watchpoint | |
3580 | && b->type != bp_read_watchpoint | |
3581 | && b->type != bp_access_watchpoint | |
3582 | && b->type != bp_hardware_watchpoint) | |
3583 | continue; | |
3584 | ||
3585 | if (!found_a_breakpoint++) | |
3586 | { | |
3587 | annotate_breakpoints_headers (); | |
8b93c638 JM |
3588 | #ifdef UI_OUT |
3589 | annotate_field (0); | |
3590 | ui_out_table_header (uiout, 3, ui_left, "Num"); /* 1 */ | |
3591 | annotate_field (1); | |
3592 | ui_out_table_header (uiout, 14, ui_left, "Type"); /* 2 */ | |
3593 | annotate_field (2); | |
3594 | ui_out_table_header (uiout, 4, ui_left, "Disp"); /* 3 */ | |
3595 | annotate_field (3); | |
3596 | ui_out_table_header (uiout, 3, ui_left, "Enb"); /* 4 */ | |
3597 | if (addressprint) | |
3598 | { | |
3599 | annotate_field (4); | |
3600 | ui_out_table_header (uiout, 10, ui_left, "Address"); /* 5 */ | |
3601 | } | |
3602 | annotate_field (5); | |
3603 | ui_out_table_header (uiout, 40, ui_noalign, "What"); /* 6 */ | |
3604 | ui_out_table_body (uiout); | |
3605 | #else | |
c4093a6a JM |
3606 | annotate_field (0); |
3607 | printf_filtered ("Num "); | |
3608 | annotate_field (1); | |
3609 | printf_filtered ("Type "); | |
3610 | annotate_field (2); | |
3611 | printf_filtered ("Disp "); | |
3612 | annotate_field (3); | |
3613 | printf_filtered ("Enb "); | |
3614 | if (addressprint) | |
3615 | { | |
3616 | annotate_field (4); | |
3617 | printf_filtered ("Address "); | |
3618 | } | |
3619 | annotate_field (5); | |
3620 | printf_filtered ("What\n"); | |
8b93c638 | 3621 | #endif /* UI_OUT */ |
c4093a6a JM |
3622 | annotate_breakpoints_table (); |
3623 | } | |
3624 | ||
3625 | print_one_breakpoint (b, &last_addr); | |
3626 | } | |
3627 | ||
c906108c SS |
3628 | if (!found_a_breakpoint) |
3629 | { | |
8b93c638 JM |
3630 | #ifdef UI_OUT |
3631 | if (bnum == -1) | |
3632 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3633 | else | |
3634 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3635 | bnum); | |
3636 | #else | |
c906108c | 3637 | if (bnum == -1) |
c5aa993b | 3638 | printf_filtered ("No breakpoints or watchpoints.\n"); |
c906108c | 3639 | else |
c5aa993b | 3640 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); |
8b93c638 | 3641 | #endif /* UI_OUT */ |
c906108c SS |
3642 | } |
3643 | else | |
c4093a6a JM |
3644 | { |
3645 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3646 | that a comparison of an unsigned with -1 is always false. */ | |
3647 | if (last_addr != (CORE_ADDR) -1) | |
3648 | set_next_address (last_addr); | |
3649 | } | |
c906108c | 3650 | |
8b93c638 JM |
3651 | #ifdef UI_OUT |
3652 | ui_out_table_end (uiout); | |
3653 | #endif /* UI_OUT */ | |
c4093a6a JM |
3654 | /* FIXME? Should this be moved up so that it is only called when |
3655 | there have been breakpoints? */ | |
c906108c SS |
3656 | annotate_breakpoints_table_end (); |
3657 | } | |
3658 | ||
3659 | /* ARGSUSED */ | |
3660 | static void | |
3661 | breakpoints_info (bnum_exp, from_tty) | |
3662 | char *bnum_exp; | |
3663 | int from_tty; | |
3664 | { | |
3665 | int bnum = -1; | |
3666 | ||
3667 | if (bnum_exp) | |
3668 | bnum = parse_and_eval_address (bnum_exp); | |
3669 | ||
3670 | breakpoint_1 (bnum, 0); | |
3671 | } | |
3672 | ||
c906108c | 3673 | /* ARGSUSED */ |
7a292a7a | 3674 | static void |
c906108c SS |
3675 | maintenance_info_breakpoints (bnum_exp, from_tty) |
3676 | char *bnum_exp; | |
3677 | int from_tty; | |
3678 | { | |
3679 | int bnum = -1; | |
3680 | ||
3681 | if (bnum_exp) | |
3682 | bnum = parse_and_eval_address (bnum_exp); | |
3683 | ||
3684 | breakpoint_1 (bnum, 1); | |
3685 | } | |
3686 | ||
c906108c SS |
3687 | /* Print a message describing any breakpoints set at PC. */ |
3688 | ||
3689 | static void | |
3690 | describe_other_breakpoints (pc, section) | |
3691 | CORE_ADDR pc; | |
3692 | asection *section; | |
3693 | { | |
3694 | register int others = 0; | |
3695 | register struct breakpoint *b; | |
3696 | ||
3697 | ALL_BREAKPOINTS (b) | |
3698 | if (b->address == pc) | |
c5aa993b JM |
3699 | if (overlay_debugging == 0 || |
3700 | b->section == section) | |
3701 | others++; | |
c906108c SS |
3702 | if (others > 0) |
3703 | { | |
3704 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3705 | ALL_BREAKPOINTS (b) | |
3706 | if (b->address == pc) | |
c5aa993b JM |
3707 | if (overlay_debugging == 0 || |
3708 | b->section == section) | |
3709 | { | |
3710 | others--; | |
3711 | printf_filtered | |
3712 | ("%d%s%s ", | |
3713 | b->number, | |
53a5351d JM |
3714 | ((b->enable == disabled || |
3715 | b->enable == shlib_disabled || | |
c2c6d25f JM |
3716 | b->enable == call_disabled) ? " (disabled)" |
3717 | : b->enable == permanent ? " (permanent)" | |
3718 | : ""), | |
c5aa993b JM |
3719 | (others > 1) ? "," : ((others == 1) ? " and" : "")); |
3720 | } | |
c906108c SS |
3721 | printf_filtered ("also set at pc "); |
3722 | print_address_numeric (pc, 1, gdb_stdout); | |
3723 | printf_filtered (".\n"); | |
3724 | } | |
3725 | } | |
3726 | \f | |
3727 | /* Set the default place to put a breakpoint | |
3728 | for the `break' command with no arguments. */ | |
3729 | ||
3730 | void | |
3731 | set_default_breakpoint (valid, addr, symtab, line) | |
3732 | int valid; | |
3733 | CORE_ADDR addr; | |
3734 | struct symtab *symtab; | |
3735 | int line; | |
3736 | { | |
3737 | default_breakpoint_valid = valid; | |
3738 | default_breakpoint_address = addr; | |
3739 | default_breakpoint_symtab = symtab; | |
3740 | default_breakpoint_line = line; | |
3741 | } | |
3742 | ||
3743 | /* Rescan breakpoints at address ADDRESS, | |
3744 | marking the first one as "first" and any others as "duplicates". | |
c2c6d25f JM |
3745 | This is so that the bpt instruction is only inserted once. |
3746 | If we have a permanent breakpoint at ADDRESS, make that one | |
3747 | the official one, and the rest as duplicates. */ | |
c906108c SS |
3748 | |
3749 | static void | |
3750 | check_duplicates (address, section) | |
3751 | CORE_ADDR address; | |
3752 | asection *section; | |
3753 | { | |
3754 | register struct breakpoint *b; | |
3755 | register int count = 0; | |
c2c6d25f | 3756 | struct breakpoint *perm_bp = 0; |
c906108c SS |
3757 | |
3758 | if (address == 0) /* Watchpoints are uninteresting */ | |
3759 | return; | |
3760 | ||
3761 | ALL_BREAKPOINTS (b) | |
3762 | if (b->enable != disabled | |
3763 | && b->enable != shlib_disabled | |
3764 | && b->enable != call_disabled | |
3765 | && b->address == address | |
3766 | && (overlay_debugging == 0 || b->section == section)) | |
c5aa993b | 3767 | { |
c2c6d25f JM |
3768 | /* Have we found a permanent breakpoint? */ |
3769 | if (b->enable == permanent) | |
3770 | { | |
3771 | perm_bp = b; | |
3772 | break; | |
3773 | } | |
3774 | ||
c5aa993b JM |
3775 | count++; |
3776 | b->duplicate = count > 1; | |
3777 | } | |
c2c6d25f JM |
3778 | |
3779 | /* If we found a permanent breakpoint at this address, go over the | |
3780 | list again and declare all the other breakpoints there to be the | |
3781 | duplicates. */ | |
3782 | if (perm_bp) | |
3783 | { | |
3784 | perm_bp->duplicate = 0; | |
3785 | ||
3786 | /* Permanent breakpoint should always be inserted. */ | |
3787 | if (! perm_bp->inserted) | |
3788 | internal_error ("allegedly permanent breakpoint is not " | |
3789 | "actually inserted"); | |
3790 | ||
3791 | ALL_BREAKPOINTS (b) | |
3792 | if (b != perm_bp) | |
3793 | { | |
3794 | if (b->inserted) | |
3795 | internal_error ("another breakpoint was inserted on top of " | |
3796 | "a permanent breakpoint"); | |
3797 | ||
3798 | if (b->enable != disabled | |
3799 | && b->enable != shlib_disabled | |
3800 | && b->enable != call_disabled | |
3801 | && b->address == address | |
3802 | && (overlay_debugging == 0 || b->section == section)) | |
3803 | b->duplicate = 1; | |
3804 | } | |
3805 | } | |
c906108c SS |
3806 | } |
3807 | ||
3808 | /* Low level routine to set a breakpoint. | |
3809 | Takes as args the three things that every breakpoint must have. | |
3810 | Returns the breakpoint object so caller can set other things. | |
3811 | Does not set the breakpoint number! | |
3812 | Does not print anything. | |
3813 | ||
3814 | ==> This routine should not be called if there is a chance of later | |
3815 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
3816 | your arguments BEFORE calling this routine! */ | |
3817 | ||
3818 | struct breakpoint * | |
3819 | set_raw_breakpoint (sal) | |
3820 | struct symtab_and_line sal; | |
3821 | { | |
3822 | register struct breakpoint *b, *b1; | |
3823 | ||
3824 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3825 | memset (b, 0, sizeof (*b)); | |
3826 | b->address = sal.pc; | |
3827 | if (sal.symtab == NULL) | |
3828 | b->source_file = NULL; | |
3829 | else | |
3830 | b->source_file = savestring (sal.symtab->filename, | |
3831 | strlen (sal.symtab->filename)); | |
3832 | b->section = sal.section; | |
3833 | b->language = current_language->la_language; | |
3834 | b->input_radix = input_radix; | |
3835 | b->thread = -1; | |
3836 | b->line_number = sal.line; | |
3837 | b->enable = enabled; | |
3838 | b->next = 0; | |
3839 | b->silent = 0; | |
3840 | b->ignore_count = 0; | |
3841 | b->commands = NULL; | |
3842 | b->frame = 0; | |
3843 | b->dll_pathname = NULL; | |
3844 | b->triggered_dll_pathname = NULL; | |
3845 | b->forked_inferior_pid = 0; | |
3846 | b->exec_pathname = NULL; | |
3847 | ||
3848 | /* Add this breakpoint to the end of the chain | |
3849 | so that a list of breakpoints will come out in order | |
3850 | of increasing numbers. */ | |
3851 | ||
3852 | b1 = breakpoint_chain; | |
3853 | if (b1 == 0) | |
3854 | breakpoint_chain = b; | |
3855 | else | |
3856 | { | |
3857 | while (b1->next) | |
3858 | b1 = b1->next; | |
3859 | b1->next = b; | |
3860 | } | |
3861 | ||
3862 | check_duplicates (sal.pc, sal.section); | |
3863 | breakpoints_changed (); | |
3864 | ||
3865 | return b; | |
3866 | } | |
3867 | ||
c2c6d25f JM |
3868 | |
3869 | /* Note that the breakpoint object B describes a permanent breakpoint | |
3870 | instruction, hard-wired into the inferior's code. */ | |
3871 | void | |
3872 | make_breakpoint_permanent (struct breakpoint *b) | |
3873 | { | |
3874 | b->enable = permanent; | |
3875 | ||
3876 | /* By definition, permanent breakpoints are already present in the code. */ | |
3877 | b->inserted = 1; | |
3878 | } | |
3879 | ||
c906108c SS |
3880 | #ifdef GET_LONGJMP_TARGET |
3881 | ||
3882 | static void | |
3883 | create_longjmp_breakpoint (func_name) | |
3884 | char *func_name; | |
3885 | { | |
3886 | struct symtab_and_line sal; | |
3887 | struct breakpoint *b; | |
3888 | ||
c5aa993b | 3889 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3890 | if (func_name != NULL) |
3891 | { | |
3892 | struct minimal_symbol *m; | |
3893 | ||
53a5351d JM |
3894 | m = lookup_minimal_symbol_text (func_name, NULL, |
3895 | (struct objfile *) NULL); | |
c906108c SS |
3896 | if (m) |
3897 | sal.pc = SYMBOL_VALUE_ADDRESS (m); | |
3898 | else | |
3899 | return; | |
3900 | } | |
3901 | sal.section = find_pc_overlay (sal.pc); | |
3902 | b = set_raw_breakpoint (sal); | |
c5aa993b JM |
3903 | if (!b) |
3904 | return; | |
c906108c SS |
3905 | |
3906 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; | |
3907 | b->disposition = donttouch; | |
3908 | b->enable = disabled; | |
3909 | b->silent = 1; | |
3910 | if (func_name) | |
c5aa993b | 3911 | b->addr_string = strsave (func_name); |
c906108c SS |
3912 | b->number = internal_breakpoint_number--; |
3913 | } | |
3914 | ||
c5aa993b | 3915 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
c906108c | 3916 | |
53a5351d JM |
3917 | /* Call this routine when stepping and nexting to enable a breakpoint |
3918 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3919 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3920 | ||
3921 | void | |
c5aa993b | 3922 | enable_longjmp_breakpoint () |
c906108c SS |
3923 | { |
3924 | register struct breakpoint *b; | |
3925 | ||
3926 | ALL_BREAKPOINTS (b) | |
3927 | if (b->type == bp_longjmp) | |
c5aa993b JM |
3928 | { |
3929 | b->enable = enabled; | |
3930 | check_duplicates (b->address, b->section); | |
3931 | } | |
c906108c SS |
3932 | } |
3933 | ||
3934 | void | |
c5aa993b | 3935 | disable_longjmp_breakpoint () |
c906108c SS |
3936 | { |
3937 | register struct breakpoint *b; | |
3938 | ||
3939 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3940 | if (b->type == bp_longjmp |
c906108c | 3941 | || b->type == bp_longjmp_resume) |
c5aa993b JM |
3942 | { |
3943 | b->enable = disabled; | |
3944 | check_duplicates (b->address, b->section); | |
3945 | } | |
c906108c SS |
3946 | } |
3947 | ||
c4093a6a JM |
3948 | struct breakpoint * |
3949 | create_thread_event_breakpoint (address) | |
3950 | CORE_ADDR address; | |
3951 | { | |
3952 | struct breakpoint *b; | |
3953 | struct symtab_and_line sal; | |
3954 | char addr_string[80]; /* Surely an addr can't be longer than that. */ | |
3955 | ||
3956 | INIT_SAL (&sal); /* initialize to zeroes */ | |
3957 | sal.pc = address; | |
3958 | sal.section = find_pc_overlay (sal.pc); | |
3959 | if ((b = set_raw_breakpoint (sal)) == NULL) | |
3960 | return NULL; | |
3961 | ||
3962 | b->number = internal_breakpoint_number--; | |
3963 | b->disposition = donttouch; | |
3964 | b->type = bp_thread_event; /* XXX: do we need a new type? | |
3965 | bp_thread_event */ | |
3966 | b->enable = enabled; | |
3967 | /* addr_string has to be used or breakpoint_re_set will delete me. */ | |
3968 | sprintf (addr_string, "*0x%s", paddr (b->address)); | |
3969 | b->addr_string = strsave (addr_string); | |
3970 | ||
3971 | return b; | |
3972 | } | |
3973 | ||
3974 | void | |
3975 | remove_thread_event_breakpoints (void) | |
3976 | { | |
3977 | struct breakpoint *b, *temp; | |
3978 | ||
3979 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3980 | if (b->type == bp_thread_event) | |
3981 | delete_breakpoint (b); | |
3982 | } | |
3983 | ||
c906108c SS |
3984 | #ifdef SOLIB_ADD |
3985 | void | |
3986 | remove_solib_event_breakpoints () | |
3987 | { | |
3988 | register struct breakpoint *b, *temp; | |
3989 | ||
3990 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3991 | if (b->type == bp_shlib_event) | |
c5aa993b | 3992 | delete_breakpoint (b); |
c906108c SS |
3993 | } |
3994 | ||
c2c6d25f | 3995 | struct breakpoint * |
c906108c SS |
3996 | create_solib_event_breakpoint (address) |
3997 | CORE_ADDR address; | |
3998 | { | |
3999 | struct breakpoint *b; | |
4000 | struct symtab_and_line sal; | |
4001 | ||
c5aa993b | 4002 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
4003 | sal.pc = address; |
4004 | sal.section = find_pc_overlay (sal.pc); | |
4005 | b = set_raw_breakpoint (sal); | |
4006 | b->number = internal_breakpoint_number--; | |
4007 | b->disposition = donttouch; | |
4008 | b->type = bp_shlib_event; | |
c2c6d25f JM |
4009 | |
4010 | return b; | |
c906108c SS |
4011 | } |
4012 | ||
104c1213 JM |
4013 | /* Disable any breakpoints that are on code in shared libraries. Only |
4014 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4015 | ||
c906108c SS |
4016 | void |
4017 | disable_breakpoints_in_shlibs (silent) | |
4018 | int silent; | |
4019 | { | |
c5aa993b JM |
4020 | struct breakpoint *b; |
4021 | int disabled_shlib_breaks = 0; | |
c906108c SS |
4022 | |
4023 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4024 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4025 | { |
c906108c | 4026 | #if defined (PC_SOLIB) |
c5aa993b JM |
4027 | if (((b->type == bp_breakpoint) || |
4028 | (b->type == bp_hardware_breakpoint)) && | |
104c1213 | 4029 | b->enable == enabled && |
c5aa993b JM |
4030 | !b->duplicate && |
4031 | PC_SOLIB (b->address)) | |
4032 | { | |
4033 | b->enable = shlib_disabled; | |
4034 | if (!silent) | |
4035 | { | |
4036 | if (!disabled_shlib_breaks) | |
4037 | { | |
4038 | target_terminal_ours_for_output (); | |
53a5351d | 4039 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
4040 | } |
4041 | disabled_shlib_breaks = 1; | |
53a5351d | 4042 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
4043 | } |
4044 | } | |
c906108c | 4045 | #endif |
c5aa993b | 4046 | } |
c906108c SS |
4047 | } |
4048 | ||
4049 | /* Try to reenable any breakpoints in shared libraries. */ | |
4050 | void | |
4051 | re_enable_breakpoints_in_shlibs () | |
4052 | { | |
4053 | struct breakpoint *b; | |
4054 | ||
4055 | ALL_BREAKPOINTS (b) | |
4056 | if (b->enable == shlib_disabled) | |
c5aa993b JM |
4057 | { |
4058 | char buf[1]; | |
c906108c | 4059 | |
c5aa993b JM |
4060 | /* Do not reenable the breakpoint if the shared library |
4061 | is still not mapped in. */ | |
4062 | if (target_read_memory (b->address, buf, 1) == 0) | |
4063 | b->enable = enabled; | |
4064 | } | |
c906108c SS |
4065 | } |
4066 | ||
4067 | #endif | |
4068 | ||
4069 | static void | |
53a5351d | 4070 | solib_load_unload_1 (hookname, tempflag, dll_pathname, cond_string, bp_kind) |
7a292a7a SS |
4071 | char *hookname; |
4072 | int tempflag; | |
4073 | char *dll_pathname; | |
4074 | char *cond_string; | |
4075 | enum bptype bp_kind; | |
c906108c | 4076 | { |
c5aa993b | 4077 | struct breakpoint *b; |
c906108c | 4078 | struct symtabs_and_lines sals; |
c5aa993b JM |
4079 | struct cleanup *old_chain; |
4080 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4081 | char *addr_start = hookname; |
4082 | char *addr_end = NULL; | |
4083 | char **canonical = (char **) NULL; | |
4084 | int thread = -1; /* All threads. */ | |
4085 | ||
c906108c SS |
4086 | /* Set a breakpoint on the specified hook. */ |
4087 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
4088 | addr_end = hookname; | |
c5aa993b | 4089 | |
c906108c SS |
4090 | if (sals.nelts == 0) |
4091 | { | |
4092 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4093 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4094 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4095 | return; | |
4096 | } | |
4097 | if (sals.nelts != 1) | |
4098 | { | |
53a5351d | 4099 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4100 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4101 | return; | |
4102 | } | |
4103 | ||
53a5351d JM |
4104 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4105 | in case the following errors out. */ | |
c906108c | 4106 | old_chain = make_cleanup (free, sals.sals); |
c5aa993b | 4107 | if (canonical != (char **) NULL) |
c906108c SS |
4108 | { |
4109 | make_cleanup (free, canonical); | |
4110 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
4111 | if (canonical[0] != NULL) | |
c5aa993b | 4112 | make_cleanup (free, canonical[0]); |
c906108c | 4113 | } |
c5aa993b | 4114 | |
c906108c | 4115 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4116 | |
c906108c | 4117 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4118 | if (canonical != (char **) NULL) |
c906108c | 4119 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4120 | |
c906108c SS |
4121 | b = set_raw_breakpoint (sals.sals[0]); |
4122 | set_breakpoint_count (breakpoint_count + 1); | |
4123 | b->number = breakpoint_count; | |
4124 | b->cond = NULL; | |
53a5351d JM |
4125 | b->cond_string = (cond_string == NULL) ? |
4126 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4127 | b->thread = thread; |
c5aa993b JM |
4128 | |
4129 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4130 | b->addr_string = canonical[0]; |
4131 | else if (addr_start) | |
4132 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4133 | |
c906108c SS |
4134 | b->enable = enabled; |
4135 | b->disposition = tempflag ? del : donttouch; | |
c5aa993b | 4136 | |
c906108c SS |
4137 | if (dll_pathname == NULL) |
4138 | b->dll_pathname = NULL; | |
4139 | else | |
4140 | { | |
4141 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4142 | strcpy (b->dll_pathname, dll_pathname); | |
4143 | } | |
4144 | b->type = bp_kind; | |
c5aa993b | 4145 | |
c906108c SS |
4146 | mention (b); |
4147 | do_cleanups (old_chain); | |
4148 | } | |
4149 | ||
4150 | void | |
53a5351d JM |
4151 | create_solib_load_event_breakpoint (hookname, tempflag, |
4152 | dll_pathname, cond_string) | |
c5aa993b JM |
4153 | char *hookname; |
4154 | int tempflag; | |
4155 | char *dll_pathname; | |
4156 | char *cond_string; | |
c906108c | 4157 | { |
53a5351d JM |
4158 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4159 | cond_string, bp_catch_load); | |
c906108c SS |
4160 | } |
4161 | ||
4162 | void | |
53a5351d JM |
4163 | create_solib_unload_event_breakpoint (hookname, tempflag, |
4164 | dll_pathname, cond_string) | |
c5aa993b JM |
4165 | char *hookname; |
4166 | int tempflag; | |
4167 | char *dll_pathname; | |
4168 | char *cond_string; | |
c906108c | 4169 | { |
53a5351d JM |
4170 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4171 | cond_string, bp_catch_unload); | |
c906108c SS |
4172 | } |
4173 | ||
4174 | static void | |
4175 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind) | |
7a292a7a SS |
4176 | int tempflag; |
4177 | char *cond_string; | |
4178 | enum bptype bp_kind; | |
c906108c | 4179 | { |
c5aa993b JM |
4180 | struct symtab_and_line sal; |
4181 | struct breakpoint *b; | |
4182 | int thread = -1; /* All threads. */ | |
4183 | ||
4184 | INIT_SAL (&sal); | |
c906108c SS |
4185 | sal.pc = 0; |
4186 | sal.symtab = NULL; | |
4187 | sal.line = 0; | |
c5aa993b | 4188 | |
c906108c SS |
4189 | b = set_raw_breakpoint (sal); |
4190 | set_breakpoint_count (breakpoint_count + 1); | |
4191 | b->number = breakpoint_count; | |
4192 | b->cond = NULL; | |
53a5351d JM |
4193 | b->cond_string = (cond_string == NULL) ? |
4194 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4195 | b->thread = thread; |
4196 | b->addr_string = NULL; | |
4197 | b->enable = enabled; | |
4198 | b->disposition = tempflag ? del : donttouch; | |
4199 | b->forked_inferior_pid = 0; | |
c5aa993b | 4200 | |
c906108c | 4201 | b->type = bp_kind; |
c5aa993b | 4202 | |
c906108c SS |
4203 | mention (b); |
4204 | } | |
4205 | ||
4206 | void | |
4207 | create_fork_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
4208 | int tempflag; |
4209 | char *cond_string; | |
c906108c SS |
4210 | { |
4211 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4212 | } | |
c5aa993b | 4213 | |
c906108c SS |
4214 | void |
4215 | create_vfork_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
4216 | int tempflag; |
4217 | char *cond_string; | |
c906108c SS |
4218 | { |
4219 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4220 | } | |
4221 | ||
4222 | void | |
4223 | create_exec_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
4224 | int tempflag; |
4225 | char *cond_string; | |
c906108c | 4226 | { |
c5aa993b JM |
4227 | struct symtab_and_line sal; |
4228 | struct breakpoint *b; | |
4229 | int thread = -1; /* All threads. */ | |
c906108c | 4230 | |
c5aa993b | 4231 | INIT_SAL (&sal); |
c906108c SS |
4232 | sal.pc = 0; |
4233 | sal.symtab = NULL; | |
4234 | sal.line = 0; | |
4235 | ||
4236 | b = set_raw_breakpoint (sal); | |
4237 | set_breakpoint_count (breakpoint_count + 1); | |
4238 | b->number = breakpoint_count; | |
4239 | b->cond = NULL; | |
53a5351d JM |
4240 | b->cond_string = (cond_string == NULL) ? |
4241 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4242 | b->thread = thread; |
4243 | b->addr_string = NULL; | |
4244 | b->enable = enabled; | |
4245 | b->disposition = tempflag ? del : donttouch; | |
4246 | ||
4247 | b->type = bp_catch_exec; | |
4248 | ||
4249 | mention (b); | |
4250 | } | |
4251 | ||
4252 | static int | |
c5aa993b | 4253 | hw_breakpoint_used_count () |
c906108c SS |
4254 | { |
4255 | register struct breakpoint *b; | |
4256 | int i = 0; | |
4257 | ||
4258 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4259 | { |
4260 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
4261 | i++; | |
4262 | } | |
c906108c SS |
4263 | |
4264 | return i; | |
4265 | } | |
4266 | ||
4267 | static int | |
c5aa993b JM |
4268 | hw_watchpoint_used_count (type, other_type_used) |
4269 | enum bptype type; | |
4270 | int *other_type_used; | |
c906108c SS |
4271 | { |
4272 | register struct breakpoint *b; | |
4273 | int i = 0; | |
4274 | ||
4275 | *other_type_used = 0; | |
4276 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4277 | { |
4278 | if (b->enable == enabled) | |
4279 | { | |
4280 | if (b->type == type) | |
4281 | i++; | |
4282 | else if ((b->type == bp_hardware_watchpoint || | |
4283 | b->type == bp_read_watchpoint || | |
4284 | b->type == bp_access_watchpoint) | |
4285 | && b->enable == enabled) | |
4286 | *other_type_used = 1; | |
4287 | } | |
4288 | } | |
c906108c SS |
4289 | return i; |
4290 | } | |
4291 | ||
53a5351d JM |
4292 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4293 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4294 | |
53a5351d JM |
4295 | FIXME - This ought to be done by setting a temporary breakpoint |
4296 | that gets deleted automatically... */ | |
c906108c SS |
4297 | |
4298 | void | |
c5aa993b | 4299 | set_longjmp_resume_breakpoint (pc, frame) |
c906108c SS |
4300 | CORE_ADDR pc; |
4301 | struct frame_info *frame; | |
4302 | { | |
4303 | register struct breakpoint *b; | |
4304 | ||
4305 | ALL_BREAKPOINTS (b) | |
4306 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
4307 | { |
4308 | b->address = pc; | |
4309 | b->enable = enabled; | |
4310 | if (frame != NULL) | |
4311 | b->frame = frame->frame; | |
4312 | else | |
4313 | b->frame = 0; | |
4314 | check_duplicates (b->address, b->section); | |
4315 | return; | |
4316 | } | |
c906108c SS |
4317 | } |
4318 | ||
4319 | void | |
4320 | disable_watchpoints_before_interactive_call_start () | |
4321 | { | |
c5aa993b | 4322 | struct breakpoint *b; |
c906108c SS |
4323 | |
4324 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4325 | { |
4326 | if (((b->type == bp_watchpoint) | |
4327 | || (b->type == bp_hardware_watchpoint) | |
4328 | || (b->type == bp_read_watchpoint) | |
4329 | || (b->type == bp_access_watchpoint) | |
4330 | || ep_is_exception_catchpoint (b)) | |
4331 | && (b->enable == enabled)) | |
4332 | { | |
4333 | b->enable = call_disabled; | |
4334 | check_duplicates (b->address, b->section); | |
4335 | } | |
4336 | } | |
c906108c SS |
4337 | } |
4338 | ||
4339 | void | |
4340 | enable_watchpoints_after_interactive_call_stop () | |
4341 | { | |
c5aa993b | 4342 | struct breakpoint *b; |
c906108c SS |
4343 | |
4344 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4345 | { |
4346 | if (((b->type == bp_watchpoint) | |
4347 | || (b->type == bp_hardware_watchpoint) | |
4348 | || (b->type == bp_read_watchpoint) | |
4349 | || (b->type == bp_access_watchpoint) | |
4350 | || ep_is_exception_catchpoint (b)) | |
4351 | && (b->enable == call_disabled)) | |
4352 | { | |
4353 | b->enable = enabled; | |
4354 | check_duplicates (b->address, b->section); | |
4355 | } | |
4356 | } | |
c906108c SS |
4357 | } |
4358 | ||
4359 | ||
4360 | /* Set a breakpoint that will evaporate an end of command | |
4361 | at address specified by SAL. | |
4362 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4363 | ||
4364 | struct breakpoint * | |
4365 | set_momentary_breakpoint (sal, frame, type) | |
4366 | struct symtab_and_line sal; | |
4367 | struct frame_info *frame; | |
4368 | enum bptype type; | |
4369 | { | |
4370 | register struct breakpoint *b; | |
4371 | b = set_raw_breakpoint (sal); | |
4372 | b->type = type; | |
4373 | b->enable = enabled; | |
4374 | b->disposition = donttouch; | |
4375 | b->frame = (frame ? frame->frame : 0); | |
4376 | ||
4377 | /* If we're debugging a multi-threaded program, then we | |
4378 | want momentary breakpoints to be active in only a | |
4379 | single thread of control. */ | |
4380 | if (in_thread_list (inferior_pid)) | |
4381 | b->thread = pid_to_thread_id (inferior_pid); | |
4382 | ||
4383 | return b; | |
4384 | } | |
c906108c | 4385 | \f |
c5aa993b | 4386 | |
c906108c SS |
4387 | /* Tell the user we have just set a breakpoint B. */ |
4388 | ||
4389 | static void | |
4390 | mention (b) | |
4391 | struct breakpoint *b; | |
4392 | { | |
4393 | int say_where = 0; | |
8b93c638 JM |
4394 | #ifdef UI_OUT |
4395 | struct cleanup *old_chain; | |
4396 | struct ui_stream *stb; | |
4397 | ||
4398 | stb = ui_out_stream_new (uiout); | |
4399 | old_chain = make_cleanup ((make_cleanup_func) ui_out_stream_delete, stb); | |
4400 | #endif /* UI_OUT */ | |
c906108c SS |
4401 | |
4402 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4403 | watchpoint) other than breakpoint creation. It should be possible to | |
4404 | clean this up and at the same time replace the random calls to | |
4405 | breakpoint_changed with this hook, as has already been done for | |
4406 | delete_breakpoint_hook and so on. */ | |
4407 | if (create_breakpoint_hook) | |
4408 | create_breakpoint_hook (b); | |
104c1213 | 4409 | breakpoint_create_event (b->number); |
c906108c SS |
4410 | |
4411 | switch (b->type) | |
4412 | { | |
4413 | case bp_none: | |
4414 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4415 | break; | |
8b93c638 JM |
4416 | #ifdef UI_OUT |
4417 | case bp_watchpoint: | |
4418 | ui_out_text (uiout, "Watchpoint "); | |
4419 | ui_out_list_begin (uiout, "wpt"); | |
4420 | ui_out_field_int (uiout, "number", b->number); | |
4421 | ui_out_text (uiout, ": "); | |
4422 | print_expression (b->exp, stb->stream); | |
4423 | ui_out_field_stream (uiout, "exp", stb); | |
4424 | ui_out_list_end (uiout); | |
4425 | break; | |
4426 | case bp_hardware_watchpoint: | |
4427 | ui_out_text (uiout, "Hardware watchpoint "); | |
4428 | ui_out_list_begin (uiout, "wpt"); | |
4429 | ui_out_field_int (uiout, "number", b->number); | |
4430 | ui_out_text (uiout, ": "); | |
4431 | print_expression (b->exp, stb->stream); | |
4432 | ui_out_field_stream (uiout, "exp", stb); | |
4433 | ui_out_list_end (uiout); | |
4434 | break; | |
4435 | #else | |
c906108c SS |
4436 | case bp_watchpoint: |
4437 | printf_filtered ("Watchpoint %d: ", b->number); | |
4438 | print_expression (b->exp, gdb_stdout); | |
4439 | break; | |
4440 | case bp_hardware_watchpoint: | |
4441 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
4442 | print_expression (b->exp, gdb_stdout); | |
4443 | break; | |
8b93c638 JM |
4444 | #endif |
4445 | #ifdef UI_OUT | |
4446 | case bp_read_watchpoint: | |
4447 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4448 | ui_out_list_begin (uiout, "hw-rwpt"); | |
4449 | ui_out_field_int (uiout, "number", b->number); | |
4450 | ui_out_text (uiout, ": "); | |
4451 | print_expression (b->exp, stb->stream); | |
4452 | ui_out_field_stream (uiout, "exp", stb); | |
4453 | ui_out_list_end (uiout); | |
4454 | break; | |
4455 | case bp_access_watchpoint: | |
4456 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4457 | ui_out_list_begin (uiout, "hw-awpt"); | |
4458 | ui_out_field_int (uiout, "number", b->number); | |
4459 | ui_out_text (uiout, ": "); | |
4460 | print_expression (b->exp, stb->stream); | |
4461 | ui_out_field_stream (uiout, "exp", stb); | |
4462 | ui_out_list_end (uiout); | |
4463 | break; | |
4464 | #else | |
c906108c SS |
4465 | case bp_read_watchpoint: |
4466 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
4467 | print_expression (b->exp, gdb_stdout); | |
4468 | break; | |
4469 | case bp_access_watchpoint: | |
53a5351d JM |
4470 | printf_filtered ("Hardware access (read/write) watchpoint %d: ", |
4471 | b->number); | |
c906108c SS |
4472 | print_expression (b->exp, gdb_stdout); |
4473 | break; | |
8b93c638 | 4474 | #endif |
c906108c | 4475 | case bp_breakpoint: |
fb40c209 AC |
4476 | #ifdef UI_OUT |
4477 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4478 | { | |
4479 | say_where = 0; | |
4480 | break; | |
4481 | } | |
4482 | #endif | |
c906108c SS |
4483 | printf_filtered ("Breakpoint %d", b->number); |
4484 | say_where = 1; | |
4485 | break; | |
4486 | case bp_hardware_breakpoint: | |
fb40c209 AC |
4487 | #ifdef UI_OUT |
4488 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4489 | { | |
4490 | say_where = 0; | |
4491 | break; | |
4492 | } | |
4493 | #endif | |
c906108c SS |
4494 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
4495 | say_where = 1; | |
4496 | break; | |
4497 | case bp_catch_load: | |
4498 | case bp_catch_unload: | |
4499 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
4500 | b->number, |
4501 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
4502 | (b->dll_pathname != NULL) ? |
4503 | b->dll_pathname : "<any library>"); | |
c906108c SS |
4504 | break; |
4505 | case bp_catch_fork: | |
4506 | case bp_catch_vfork: | |
4507 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4508 | b->number, |
4509 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
4510 | break; |
4511 | case bp_catch_exec: | |
4512 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 4513 | b->number); |
c906108c SS |
4514 | break; |
4515 | case bp_catch_catch: | |
4516 | case bp_catch_throw: | |
4517 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4518 | b->number, |
4519 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
4520 | break; |
4521 | ||
4522 | case bp_until: | |
4523 | case bp_finish: | |
4524 | case bp_longjmp: | |
4525 | case bp_longjmp_resume: | |
4526 | case bp_step_resume: | |
4527 | case bp_through_sigtramp: | |
4528 | case bp_call_dummy: | |
4529 | case bp_watchpoint_scope: | |
4530 | case bp_shlib_event: | |
c4093a6a | 4531 | case bp_thread_event: |
c906108c SS |
4532 | break; |
4533 | } | |
4534 | if (say_where) | |
4535 | { | |
4536 | if (addressprint || b->source_file == NULL) | |
4537 | { | |
4538 | printf_filtered (" at "); | |
4539 | print_address_numeric (b->address, 1, gdb_stdout); | |
4540 | } | |
4541 | if (b->source_file) | |
4542 | printf_filtered (": file %s, line %d.", | |
4543 | b->source_file, b->line_number); | |
c5aa993b JM |
4544 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, b, 1)); |
4545 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
c906108c | 4546 | } |
8b93c638 JM |
4547 | #ifdef UI_OUT |
4548 | do_cleanups (old_chain); | |
fb40c209 AC |
4549 | #endif |
4550 | #ifdef UI_OUT | |
4551 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4552 | return; | |
8b93c638 | 4553 | #endif |
c906108c SS |
4554 | printf_filtered ("\n"); |
4555 | } | |
c906108c | 4556 | \f |
c5aa993b | 4557 | |
c3f6f71d JM |
4558 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4559 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4560 | COND[i] and COND_STRING[i] values. | |
4561 | ||
4562 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4563 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4564 | array contents). If the function fails (error() is called), the | |
4565 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4566 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4567 | |
4568 | static void | |
c3f6f71d JM |
4569 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4570 | struct expression **cond, char **cond_string, | |
4571 | enum bptype type, enum bpdisp disposition, | |
4572 | int thread, int ignore_count, int from_tty) | |
c906108c | 4573 | { |
c3f6f71d JM |
4574 | if (type == bp_hardware_breakpoint) |
4575 | { | |
4576 | int i = hw_breakpoint_used_count (); | |
4577 | int target_resources_ok = | |
4578 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4579 | i + sals.nelts, 0); | |
4580 | if (target_resources_ok == 0) | |
4581 | error ("No hardware breakpoint support in the target."); | |
4582 | else if (target_resources_ok < 0) | |
4583 | error ("Hardware breakpoints used exceeds limit."); | |
4584 | } | |
c906108c | 4585 | |
c3f6f71d JM |
4586 | /* Now set all the breakpoints. */ |
4587 | { | |
4588 | int i; | |
4589 | for (i = 0; i < sals.nelts; i++) | |
4590 | { | |
4591 | struct breakpoint *b; | |
4592 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4593 | |
c3f6f71d JM |
4594 | if (from_tty) |
4595 | describe_other_breakpoints (sal.pc, sal.section); | |
4596 | ||
4597 | b = set_raw_breakpoint (sal); | |
4598 | set_breakpoint_count (breakpoint_count + 1); | |
4599 | b->number = breakpoint_count; | |
4600 | b->type = type; | |
4601 | b->cond = cond[i]; | |
4602 | b->thread = thread; | |
4603 | b->addr_string = addr_string[i]; | |
4604 | b->cond_string = cond_string[i]; | |
4605 | b->ignore_count = ignore_count; | |
4606 | b->enable = enabled; | |
4607 | b->disposition = disposition; | |
4608 | mention (b); | |
4609 | } | |
4610 | } | |
4611 | } | |
c906108c | 4612 | |
c3f6f71d JM |
4613 | /* Parse ARG which is assumed to be a SAL specification possibly |
4614 | followed by conditionals. On return, SALS contains an array of SAL | |
4615 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4616 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4617 | |
c3f6f71d JM |
4618 | void |
4619 | parse_breakpoint_sals (char **address, | |
4620 | struct symtabs_and_lines *sals, | |
4621 | char ***addr_string) | |
4622 | { | |
4623 | char *addr_start = *address; | |
4624 | *addr_string = NULL; | |
4625 | /* If no arg given, or if first arg is 'if ', use the default | |
4626 | breakpoint. */ | |
4627 | if ((*address) == NULL | |
4628 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4629 | { |
4630 | if (default_breakpoint_valid) | |
4631 | { | |
c3f6f71d JM |
4632 | struct symtab_and_line sal; |
4633 | INIT_SAL (&sal); /* initialize to zeroes */ | |
4634 | sals->sals = (struct symtab_and_line *) | |
c906108c SS |
4635 | xmalloc (sizeof (struct symtab_and_line)); |
4636 | sal.pc = default_breakpoint_address; | |
4637 | sal.line = default_breakpoint_line; | |
4638 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4639 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4640 | sals->sals[0] = sal; |
4641 | sals->nelts = 1; | |
c906108c SS |
4642 | } |
4643 | else | |
4644 | error ("No default breakpoint address now."); | |
4645 | } | |
4646 | else | |
4647 | { | |
c906108c | 4648 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4649 | current_source_symtab (which is decode_line_1's default). This |
4650 | should produce the results we want almost all of the time while | |
4651 | leaving default_breakpoint_* alone. */ | |
c906108c SS |
4652 | if (default_breakpoint_valid |
4653 | && (!current_source_symtab | |
c3f6f71d JM |
4654 | || (strchr ("+-", (*address)[0]) != NULL))) |
4655 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, | |
4656 | default_breakpoint_line, addr_string); | |
c906108c | 4657 | else |
c3f6f71d | 4658 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); |
c906108c | 4659 | } |
c3f6f71d JM |
4660 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4661 | if (sals->nelts > 0 && *addr_string == NULL) | |
4662 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4663 | if (addr_start != (*address)) | |
c906108c | 4664 | { |
c3f6f71d JM |
4665 | int i; |
4666 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4667 | { |
c3f6f71d JM |
4668 | /* Add the string if not present. */ |
4669 | if ((*addr_string)[i] == NULL) | |
4670 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4671 | } |
4672 | } | |
c3f6f71d | 4673 | } |
c906108c | 4674 | |
c906108c | 4675 | |
c3f6f71d JM |
4676 | /* Convert each SAL into a real PC. Verify that the PC can be |
4677 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4678 | |
c3f6f71d JM |
4679 | void |
4680 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, | |
4681 | char *address) | |
4682 | { | |
4683 | int i; | |
4684 | for (i = 0; i < sals->nelts; i++) | |
4685 | { | |
4686 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4687 | |
4688 | /* It's possible for the PC to be nonzero, but still an illegal | |
4689 | value on some targets. | |
4690 | ||
4691 | For example, on HP-UX if you start gdb, and before running the | |
4692 | inferior you try to set a breakpoint on a shared library function | |
4693 | "foo" where the inferior doesn't call "foo" directly but does | |
4694 | pass its address to another function call, then we do find a | |
4695 | minimal symbol for the "foo", but it's address is invalid. | |
4696 | (Appears to be an index into a table that the loader sets up | |
4697 | when the inferior is run.) | |
4698 | ||
4699 | Give the target a chance to bless sals.sals[i].pc before we | |
4700 | try to make a breakpoint for it. */ | |
c3f6f71d | 4701 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4702 | { |
c3f6f71d JM |
4703 | if (address == NULL) |
4704 | error ("Cannot break without a running program."); | |
4705 | else | |
4706 | error ("Cannot break on %s without a running program.", | |
4707 | address); | |
c5aa993b | 4708 | } |
c3f6f71d JM |
4709 | } |
4710 | } | |
4711 | ||
4712 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4713 | flag: first bit : 0 non-temporary, 1 temporary. | |
4714 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4715 | |
c3f6f71d JM |
4716 | static void |
4717 | break_command_1 (arg, flag, from_tty) | |
4718 | char *arg; | |
4719 | int flag, from_tty; | |
4720 | { | |
4721 | int tempflag, hardwareflag; | |
4722 | struct symtabs_and_lines sals; | |
4723 | register struct expression **cond = 0; | |
4724 | /* Pointers in arg to the start, and one past the end, of the | |
4725 | condition. */ | |
4726 | char **cond_string = (char **) NULL; | |
4727 | char *addr_start = arg; | |
4728 | char **addr_string; | |
4729 | struct cleanup *old_chain; | |
4730 | struct cleanup *breakpoint_chain = NULL; | |
4731 | int i; | |
4732 | int thread = -1; | |
4733 | int ignore_count = 0; | |
4734 | ||
4735 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4736 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4737 | |
c3f6f71d JM |
4738 | sals.sals = NULL; |
4739 | sals.nelts = 0; | |
4740 | addr_string = NULL; | |
4741 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4742 | ||
4743 | if (!sals.nelts) | |
4744 | return; | |
4745 | ||
4746 | /* Create a chain of things that always need to be cleaned up. */ | |
4747 | old_chain = make_cleanup (null_cleanup, 0); | |
4748 | ||
4749 | /* Make sure that all storage allocated to SALS gets freed. */ | |
4750 | make_cleanup (free, sals.sals); | |
4751 | ||
4752 | /* Cleanup the addr_string array but not its contents. */ | |
4753 | make_cleanup (free, addr_string); | |
4754 | ||
4755 | /* Allocate space for all the cond expressions. */ | |
4756 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
4757 | make_cleanup (free, cond); | |
4758 | ||
4759 | /* Allocate space for all the cond strings. */ | |
4760 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
4761 | make_cleanup (free, cond_string); | |
4762 | ||
4763 | /* ----------------------------- SNIP ----------------------------- | |
4764 | Anything added to the cleanup chain beyond this point is assumed | |
4765 | to be part of a breakpoint. If the breakpoint create succeeds | |
4766 | then the memory is not reclaimed. */ | |
4767 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4768 | ||
4769 | /* Mark the contents of the addr_string for cleanup. These go on | |
4770 | the breakpoint_chain and only occure if the breakpoint create | |
4771 | fails. */ | |
4772 | for (i = 0; i < sals.nelts; i++) | |
4773 | { | |
4774 | if (addr_string[i] != NULL) | |
4775 | make_cleanup (free, addr_string[i]); | |
4776 | } | |
4777 | ||
4778 | /* Resolve all line numbers to PC's and verify that the addresses | |
4779 | are ok for the target. */ | |
4780 | breakpoint_sals_to_pc (&sals, addr_start); | |
4781 | ||
4782 | /* Verify that condition can be parsed, before setting any | |
4783 | breakpoints. Allocate a separate condition expression for each | |
4784 | breakpoint. */ | |
4785 | thread = -1; /* No specific thread yet */ | |
4786 | for (i = 0; i < sals.nelts; i++) | |
4787 | { | |
4788 | char *tok = arg; | |
c906108c SS |
4789 | while (tok && *tok) |
4790 | { | |
c3f6f71d JM |
4791 | char *end_tok; |
4792 | int toklen; | |
4793 | char *cond_start = NULL; | |
4794 | char *cond_end = NULL; | |
c906108c SS |
4795 | while (*tok == ' ' || *tok == '\t') |
4796 | tok++; | |
4797 | ||
4798 | end_tok = tok; | |
4799 | ||
4800 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4801 | end_tok++; | |
4802 | ||
4803 | toklen = end_tok - tok; | |
4804 | ||
4805 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4806 | { | |
4807 | tok = cond_start = end_tok + 1; | |
c3f6f71d JM |
4808 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
4809 | make_cleanup (free, cond[i]); | |
c906108c | 4810 | cond_end = tok; |
c3f6f71d JM |
4811 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
4812 | make_cleanup (free, cond_string[i]); | |
c906108c SS |
4813 | } |
4814 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4815 | { | |
4816 | char *tmptok; | |
4817 | ||
4818 | tok = end_tok + 1; | |
4819 | tmptok = tok; | |
4820 | thread = strtol (tok, &tok, 0); | |
4821 | if (tok == tmptok) | |
4822 | error ("Junk after thread keyword."); | |
4823 | if (!valid_thread_id (thread)) | |
4824 | error ("Unknown thread %d\n", thread); | |
4825 | } | |
4826 | else | |
4827 | error ("Junk at end of arguments."); | |
4828 | } | |
4829 | } | |
c906108c | 4830 | |
c3f6f71d JM |
4831 | create_breakpoints (sals, addr_string, cond, cond_string, |
4832 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4833 | tempflag ? del : donttouch, | |
4834 | thread, ignore_count, from_tty); | |
4835 | ||
4836 | if (sals.nelts > 1) | |
4837 | { | |
4838 | warning ("Multiple breakpoints were set."); | |
4839 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4840 | } |
c3f6f71d JM |
4841 | /* That's it. Discard the cleanups for data inserted into the |
4842 | breakpoint. */ | |
4843 | discard_cleanups (breakpoint_chain); | |
4844 | /* But cleanup everything else. */ | |
4845 | do_cleanups (old_chain); | |
4846 | } | |
c906108c | 4847 | |
c3f6f71d JM |
4848 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
4849 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 4850 | |
c3f6f71d JM |
4851 | struct captured_breakpoint_args |
4852 | { | |
4853 | char *address; | |
4854 | char *condition; | |
4855 | int hardwareflag; | |
4856 | int tempflag; | |
4857 | int thread; | |
4858 | int ignore_count; | |
4859 | }; | |
4860 | ||
4861 | static int | |
4862 | do_captured_breakpoint (void *data) | |
4863 | { | |
4864 | struct captured_breakpoint_args *args = data; | |
4865 | struct symtabs_and_lines sals; | |
4866 | register struct expression **cond; | |
4867 | struct cleanup *old_chain; | |
4868 | struct cleanup *breakpoint_chain = NULL; | |
4869 | int i; | |
4870 | char **addr_string; | |
4871 | char **cond_string; | |
4872 | ||
4873 | char *address_end; | |
4874 | ||
4875 | /* Parse the source and lines spec. Delay check that the expression | |
4876 | didn't contain trailing garbage until after cleanups are in | |
4877 | place. */ | |
4878 | sals.sals = NULL; | |
4879 | sals.nelts = 0; | |
4880 | address_end = args->address; | |
4881 | addr_string = NULL; | |
4882 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
4883 | ||
4884 | if (!sals.nelts) | |
4885 | return GDB_RC_NONE; | |
4886 | ||
4887 | /* Create a chain of things at always need to be cleaned up. */ | |
4888 | old_chain = make_cleanup (null_cleanup, 0); | |
4889 | ||
4890 | /* Always have a addr_string array, even if it is empty. */ | |
4891 | make_cleanup (free, addr_string); | |
4892 | ||
4893 | /* Make sure that all storage allocated to SALS gets freed. */ | |
4894 | make_cleanup (free, sals.sals); | |
4895 | ||
4896 | /* Allocate space for all the cond expressions. */ | |
4897 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
4898 | make_cleanup (free, cond); | |
4899 | ||
4900 | /* Allocate space for all the cond strings. */ | |
4901 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
4902 | make_cleanup (free, cond_string); | |
4903 | ||
4904 | /* ----------------------------- SNIP ----------------------------- | |
4905 | Anything added to the cleanup chain beyond this point is assumed | |
4906 | to be part of a breakpoint. If the breakpoint create goes | |
4907 | through then that memory is not cleaned up. */ | |
4908 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4909 | ||
4910 | /* Mark the contents of the addr_string for cleanup. These go on | |
4911 | the breakpoint_chain and only occure if the breakpoint create | |
4912 | fails. */ | |
c906108c SS |
4913 | for (i = 0; i < sals.nelts; i++) |
4914 | { | |
c3f6f71d JM |
4915 | if (addr_string[i] != NULL) |
4916 | make_cleanup (free, addr_string[i]); | |
c906108c SS |
4917 | } |
4918 | ||
c3f6f71d JM |
4919 | /* Wait until now before checking for garbage at the end of the |
4920 | address. That way cleanups can take care of freeing any | |
4921 | memory. */ | |
4922 | if (*address_end != '\0') | |
4923 | error ("Garbage %s following breakpoint address", address_end); | |
4924 | ||
4925 | /* Resolve all line numbers to PC's. */ | |
4926 | breakpoint_sals_to_pc (&sals, args->address); | |
4927 | ||
4928 | /* Verify that conditions can be parsed, before setting any | |
4929 | breakpoints. */ | |
4930 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 4931 | { |
c3f6f71d JM |
4932 | if (args->condition != NULL) |
4933 | { | |
4934 | char *tok = args->condition; | |
4935 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
4936 | if (*tok != '\0') | |
4937 | error ("Garbage %s follows condition", tok); | |
4938 | make_cleanup (free, cond[i]); | |
4939 | cond_string[i] = xstrdup (args->condition); | |
4940 | } | |
c906108c | 4941 | } |
c3f6f71d JM |
4942 | |
4943 | create_breakpoints (sals, addr_string, cond, cond_string, | |
4944 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4945 | args->tempflag ? del : donttouch, | |
4946 | args->thread, args->ignore_count, 0/*from-tty*/); | |
4947 | ||
4948 | /* That's it. Discard the cleanups for data inserted into the | |
4949 | breakpoint. */ | |
4950 | discard_cleanups (breakpoint_chain); | |
4951 | /* But cleanup everything else. */ | |
c906108c | 4952 | do_cleanups (old_chain); |
c3f6f71d | 4953 | return GDB_RC_OK; |
c906108c SS |
4954 | } |
4955 | ||
c3f6f71d JM |
4956 | enum gdb_rc |
4957 | gdb_breakpoint (char *address, char *condition, | |
4958 | int hardwareflag, int tempflag, | |
4959 | int thread, int ignore_count) | |
4960 | { | |
4961 | struct captured_breakpoint_args args; | |
4962 | args.address = address; | |
4963 | args.condition = condition; | |
4964 | args.hardwareflag = hardwareflag; | |
4965 | args.tempflag = tempflag; | |
4966 | args.thread = thread; | |
4967 | args.ignore_count = ignore_count; | |
4968 | return catch_errors (do_captured_breakpoint, &args, | |
4969 | NULL, RETURN_MASK_ALL); | |
4970 | } | |
4971 | ||
4972 | ||
c906108c SS |
4973 | static void |
4974 | break_at_finish_at_depth_command_1 (arg, flag, from_tty) | |
4975 | char *arg; | |
4976 | int flag; | |
4977 | int from_tty; | |
4978 | { | |
4979 | struct frame_info *frame; | |
4980 | CORE_ADDR low, high, selected_pc = 0; | |
4981 | char *extra_args, *level_arg, *addr_string; | |
4982 | int extra_args_len = 0, if_arg = 0; | |
4983 | ||
4984 | if (!arg || | |
4985 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4986 | { | |
4987 | ||
4988 | if (default_breakpoint_valid) | |
4989 | { | |
4990 | if (selected_frame) | |
4991 | { | |
4992 | selected_pc = selected_frame->pc; | |
4993 | if (arg) | |
4994 | if_arg = 1; | |
4995 | } | |
4996 | else | |
4997 | error ("No selected frame."); | |
4998 | } | |
4999 | else | |
5000 | error ("No default breakpoint address now."); | |
5001 | } | |
5002 | else | |
5003 | { | |
5004 | extra_args = strchr (arg, ' '); | |
5005 | if (extra_args) | |
5006 | { | |
5007 | extra_args++; | |
5008 | extra_args_len = strlen (extra_args); | |
5009 | level_arg = (char *) xmalloc (extra_args - arg); | |
5010 | strncpy (level_arg, arg, extra_args - arg - 1); | |
5011 | level_arg[extra_args - arg - 1] = '\0'; | |
5012 | } | |
5013 | else | |
5014 | { | |
5015 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
5016 | strcpy (level_arg, arg); | |
5017 | } | |
5018 | ||
5019 | frame = parse_frame_specification (level_arg); | |
5020 | if (frame) | |
5021 | selected_pc = frame->pc; | |
5022 | else | |
5023 | selected_pc = 0; | |
5024 | } | |
5025 | if (if_arg) | |
5026 | { | |
5027 | extra_args = arg; | |
c5aa993b | 5028 | extra_args_len = strlen (arg); |
c906108c SS |
5029 | } |
5030 | ||
5031 | if (selected_pc) | |
5032 | { | |
c5aa993b | 5033 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c SS |
5034 | { |
5035 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
5036 | if (extra_args_len) | |
d4f3574e | 5037 | sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5038 | else |
d4f3574e | 5039 | sprintf (addr_string, "*0x%s", paddr_nz (high)); |
c906108c SS |
5040 | break_command_1 (addr_string, flag, from_tty); |
5041 | free (addr_string); | |
5042 | } | |
5043 | else | |
5044 | error ("No function contains the specified address"); | |
5045 | } | |
5046 | else | |
5047 | error ("Unable to set breakpoint at procedure exit"); | |
5048 | } | |
5049 | ||
5050 | ||
5051 | static void | |
5052 | break_at_finish_command_1 (arg, flag, from_tty) | |
5053 | char *arg; | |
5054 | int flag; | |
5055 | int from_tty; | |
5056 | { | |
5057 | char *addr_string, *break_string, *beg_addr_string; | |
5058 | CORE_ADDR low, high; | |
5059 | struct symtabs_and_lines sals; | |
5060 | struct symtab_and_line sal; | |
5061 | struct cleanup *old_chain; | |
5062 | char *extra_args; | |
5063 | int extra_args_len = 0; | |
5064 | int i, if_arg = 0; | |
5065 | ||
5066 | if (!arg || | |
5067 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5068 | { | |
5069 | if (default_breakpoint_valid) | |
5070 | { | |
5071 | if (selected_frame) | |
5072 | { | |
5073 | addr_string = (char *) xmalloc (15); | |
d4f3574e | 5074 | sprintf (addr_string, "*0x%s", paddr_nz (selected_frame->pc)); |
c906108c SS |
5075 | if (arg) |
5076 | if_arg = 1; | |
5077 | } | |
5078 | else | |
5079 | error ("No selected frame."); | |
5080 | } | |
5081 | else | |
5082 | error ("No default breakpoint address now."); | |
5083 | } | |
5084 | else | |
5085 | { | |
5086 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5087 | strcpy (addr_string, arg); | |
5088 | } | |
5089 | ||
5090 | if (if_arg) | |
5091 | { | |
5092 | extra_args = arg; | |
c5aa993b JM |
5093 | extra_args_len = strlen (arg); |
5094 | } | |
5095 | else if (arg) | |
5096 | { | |
5097 | /* get the stuff after the function name or address */ | |
5098 | extra_args = strchr (arg, ' '); | |
5099 | if (extra_args) | |
5100 | { | |
5101 | extra_args++; | |
5102 | extra_args_len = strlen (extra_args); | |
5103 | } | |
c906108c | 5104 | } |
c906108c SS |
5105 | |
5106 | sals.sals = NULL; | |
5107 | sals.nelts = 0; | |
5108 | ||
c5aa993b JM |
5109 | beg_addr_string = addr_string; |
5110 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
5111 | (char ***) NULL); | |
c906108c SS |
5112 | |
5113 | free (beg_addr_string); | |
5114 | old_chain = make_cleanup (free, sals.sals); | |
5115 | for (i = 0; (i < sals.nelts); i++) | |
5116 | { | |
5117 | sal = sals.sals[i]; | |
c5aa993b | 5118 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c SS |
5119 | { |
5120 | break_string = (char *) xmalloc (extra_args_len + 26); | |
5121 | if (extra_args_len) | |
d4f3574e | 5122 | sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5123 | else |
d4f3574e | 5124 | sprintf (break_string, "*0x%s", paddr_nz (high)); |
c906108c | 5125 | break_command_1 (break_string, flag, from_tty); |
c5aa993b | 5126 | free (break_string); |
c906108c SS |
5127 | } |
5128 | else | |
5129 | error ("No function contains the specified address"); | |
5130 | } | |
5131 | if (sals.nelts > 1) | |
5132 | { | |
53a5351d JM |
5133 | warning ("Multiple breakpoints were set.\n"); |
5134 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5135 | } |
c5aa993b | 5136 | do_cleanups (old_chain); |
c906108c SS |
5137 | } |
5138 | ||
5139 | ||
5140 | /* Helper function for break_command_1 and disassemble_command. */ | |
5141 | ||
5142 | void | |
5143 | resolve_sal_pc (sal) | |
5144 | struct symtab_and_line *sal; | |
5145 | { | |
5146 | CORE_ADDR pc; | |
5147 | ||
5148 | if (sal->pc == 0 && sal->symtab != NULL) | |
5149 | { | |
5150 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5151 | error ("No line %d in file \"%s\".", | |
5152 | sal->line, sal->symtab->filename); | |
5153 | sal->pc = pc; | |
5154 | } | |
5155 | ||
5156 | if (sal->section == 0 && sal->symtab != NULL) | |
5157 | { | |
5158 | struct blockvector *bv; | |
c5aa993b JM |
5159 | struct block *b; |
5160 | struct symbol *sym; | |
5161 | int index; | |
c906108c | 5162 | |
c5aa993b | 5163 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5164 | if (bv != NULL) |
5165 | { | |
c5aa993b | 5166 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5167 | sym = block_function (b); |
5168 | if (sym != NULL) | |
5169 | { | |
5170 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5171 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5172 | } | |
5173 | else | |
5174 | { | |
5175 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5176 | have to look harder. This case can be executed if we have |
5177 | line numbers but no functions (as can happen in assembly | |
5178 | source). */ | |
c906108c | 5179 | |
c5aa993b | 5180 | struct minimal_symbol *msym; |
c906108c SS |
5181 | |
5182 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5183 | if (msym) | |
5184 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5185 | } | |
5186 | } | |
5187 | } | |
5188 | } | |
5189 | ||
5190 | void | |
5191 | break_command (arg, from_tty) | |
5192 | char *arg; | |
5193 | int from_tty; | |
5194 | { | |
5195 | break_command_1 (arg, 0, from_tty); | |
5196 | } | |
5197 | ||
7a292a7a | 5198 | static void |
c906108c SS |
5199 | break_at_finish_command (arg, from_tty) |
5200 | char *arg; | |
5201 | int from_tty; | |
5202 | { | |
5203 | break_at_finish_command_1 (arg, 0, from_tty); | |
5204 | } | |
5205 | ||
7a292a7a | 5206 | static void |
c906108c SS |
5207 | break_at_finish_at_depth_command (arg, from_tty) |
5208 | char *arg; | |
5209 | int from_tty; | |
5210 | { | |
5211 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5212 | } | |
5213 | ||
5214 | void | |
5215 | tbreak_command (arg, from_tty) | |
5216 | char *arg; | |
5217 | int from_tty; | |
5218 | { | |
5219 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5220 | } | |
5221 | ||
7a292a7a | 5222 | static void |
c906108c SS |
5223 | tbreak_at_finish_command (arg, from_tty) |
5224 | char *arg; | |
5225 | int from_tty; | |
5226 | { | |
5227 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5228 | } | |
5229 | ||
5230 | static void | |
5231 | hbreak_command (arg, from_tty) | |
5232 | char *arg; | |
5233 | int from_tty; | |
5234 | { | |
5235 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
5236 | } | |
5237 | ||
5238 | static void | |
5239 | thbreak_command (arg, from_tty) | |
5240 | char *arg; | |
5241 | int from_tty; | |
5242 | { | |
5243 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
5244 | } | |
5245 | ||
5246 | static void | |
5247 | stop_command (arg, from_tty) | |
5248 | char *arg; | |
5249 | int from_tty; | |
5250 | { | |
5251 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5252 | Usage: stop in <function | address>\n\ | |
5253 | stop at <line>\n"); | |
5254 | } | |
5255 | ||
5256 | static void | |
5257 | stopin_command (arg, from_tty) | |
5258 | char *arg; | |
5259 | int from_tty; | |
5260 | { | |
5261 | int badInput = 0; | |
5262 | ||
c5aa993b | 5263 | if (arg == (char *) NULL) |
c906108c SS |
5264 | badInput = 1; |
5265 | else if (*arg != '*') | |
5266 | { | |
5267 | char *argptr = arg; | |
5268 | int hasColon = 0; | |
5269 | ||
53a5351d JM |
5270 | /* look for a ':'. If this is a line number specification, then |
5271 | say it is bad, otherwise, it should be an address or | |
5272 | function/method name */ | |
c906108c | 5273 | while (*argptr && !hasColon) |
c5aa993b JM |
5274 | { |
5275 | hasColon = (*argptr == ':'); | |
5276 | argptr++; | |
5277 | } | |
c906108c SS |
5278 | |
5279 | if (hasColon) | |
c5aa993b | 5280 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5281 | else |
c5aa993b | 5282 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5283 | } |
5284 | ||
5285 | if (badInput) | |
c5aa993b | 5286 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
5287 | else |
5288 | break_command_1 (arg, 0, from_tty); | |
5289 | } | |
5290 | ||
5291 | static void | |
5292 | stopat_command (arg, from_tty) | |
5293 | char *arg; | |
5294 | int from_tty; | |
5295 | { | |
5296 | int badInput = 0; | |
5297 | ||
c5aa993b | 5298 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5299 | badInput = 1; |
5300 | else | |
5301 | { | |
5302 | char *argptr = arg; | |
5303 | int hasColon = 0; | |
5304 | ||
5305 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5306 | it is probably a line number. */ |
c906108c | 5307 | while (*argptr && !hasColon) |
c5aa993b JM |
5308 | { |
5309 | hasColon = (*argptr == ':'); | |
5310 | argptr++; | |
5311 | } | |
c906108c SS |
5312 | |
5313 | if (hasColon) | |
c5aa993b | 5314 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5315 | else |
c5aa993b | 5316 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5317 | } |
5318 | ||
5319 | if (badInput) | |
c5aa993b | 5320 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
5321 | else |
5322 | break_command_1 (arg, 0, from_tty); | |
5323 | } | |
5324 | ||
5325 | /* ARGSUSED */ | |
53a5351d JM |
5326 | /* accessflag: hw_write: watch write, |
5327 | hw_read: watch read, | |
5328 | hw_access: watch access (read or write) */ | |
c906108c SS |
5329 | static void |
5330 | watch_command_1 (arg, accessflag, from_tty) | |
5331 | char *arg; | |
5332 | int accessflag; | |
5333 | int from_tty; | |
5334 | { | |
5335 | struct breakpoint *b; | |
5336 | struct symtab_and_line sal; | |
5337 | struct expression *exp; | |
5338 | struct block *exp_valid_block; | |
5339 | struct value *val, *mark; | |
5340 | struct frame_info *frame; | |
5341 | struct frame_info *prev_frame = NULL; | |
5342 | char *exp_start = NULL; | |
5343 | char *exp_end = NULL; | |
5344 | char *tok, *end_tok; | |
5345 | int toklen; | |
5346 | char *cond_start = NULL; | |
5347 | char *cond_end = NULL; | |
5348 | struct expression *cond = NULL; | |
5349 | int i, other_type_used, target_resources_ok = 0; | |
5350 | enum bptype bp_type; | |
5351 | int mem_cnt = 0; | |
5352 | ||
c5aa993b JM |
5353 | INIT_SAL (&sal); /* initialize to zeroes */ |
5354 | ||
c906108c SS |
5355 | /* Parse arguments. */ |
5356 | innermost_block = NULL; | |
5357 | exp_start = arg; | |
5358 | exp = parse_exp_1 (&arg, 0, 0); | |
5359 | exp_end = arg; | |
5360 | exp_valid_block = innermost_block; | |
5361 | mark = value_mark (); | |
5362 | val = evaluate_expression (exp); | |
5363 | release_value (val); | |
5364 | if (VALUE_LAZY (val)) | |
5365 | value_fetch_lazy (val); | |
5366 | ||
5367 | tok = arg; | |
5368 | while (*tok == ' ' || *tok == '\t') | |
5369 | tok++; | |
5370 | end_tok = tok; | |
5371 | ||
5372 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5373 | end_tok++; | |
5374 | ||
5375 | toklen = end_tok - tok; | |
5376 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5377 | { | |
5378 | tok = cond_start = end_tok + 1; | |
5379 | cond = parse_exp_1 (&tok, 0, 0); | |
5380 | cond_end = tok; | |
5381 | } | |
5382 | if (*tok) | |
c5aa993b | 5383 | error ("Junk at end of command."); |
c906108c | 5384 | |
53a5351d | 5385 | if (accessflag == hw_read) |
c5aa993b | 5386 | bp_type = bp_read_watchpoint; |
53a5351d | 5387 | else if (accessflag == hw_access) |
c5aa993b JM |
5388 | bp_type = bp_access_watchpoint; |
5389 | else | |
5390 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5391 | |
5392 | mem_cnt = can_use_hardware_watchpoint (val); | |
5393 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5394 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5395 | if (mem_cnt != 0) |
5396 | { | |
5397 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5398 | target_resources_ok = |
5399 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5400 | other_type_used); | |
c5aa993b | 5401 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5402 | error ("Target does not support this type of hardware watchpoint."); |
5403 | ||
c5aa993b | 5404 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5405 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5406 | } |
c906108c SS |
5407 | |
5408 | #if defined(HPUXHPPA) | |
c5aa993b | 5409 | /* On HP-UX if you set a h/w |
c906108c SS |
5410 | watchpoint before the "run" command, the inferior dies with a e.g., |
5411 | SIGILL once you start it. I initially believed this was due to a | |
5412 | bad interaction between page protection traps and the initial | |
5413 | startup sequence by the dynamic linker. | |
5414 | ||
5415 | However, I tried avoiding that by having HP-UX's implementation of | |
5416 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid | |
5417 | yet, which forced slow watches before a "run" or "attach", and it | |
5418 | still fails somewhere in the startup code. | |
5419 | ||
5420 | Until I figure out what's happening, I'm disallowing watches altogether | |
5421 | before the "run" or "attach" command. We'll tell the user they must | |
5422 | set watches after getting the program started. */ | |
c5aa993b | 5423 | if (!target_has_execution) |
c906108c SS |
5424 | { |
5425 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5426 | return; | |
5427 | } | |
5428 | #endif /* HPUXHPPA */ | |
c5aa993b | 5429 | |
c906108c SS |
5430 | /* Now set up the breakpoint. */ |
5431 | b = set_raw_breakpoint (sal); | |
5432 | set_breakpoint_count (breakpoint_count + 1); | |
5433 | b->number = breakpoint_count; | |
5434 | b->disposition = donttouch; | |
5435 | b->exp = exp; | |
5436 | b->exp_valid_block = exp_valid_block; | |
5437 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5438 | b->val = val; | |
5439 | b->cond = cond; | |
5440 | if (cond_start) | |
5441 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5442 | else | |
5443 | b->cond_string = 0; | |
c5aa993b | 5444 | |
c906108c SS |
5445 | frame = block_innermost_frame (exp_valid_block); |
5446 | if (frame) | |
5447 | { | |
5448 | prev_frame = get_prev_frame (frame); | |
5449 | b->watchpoint_frame = frame->frame; | |
5450 | } | |
5451 | else | |
c5aa993b | 5452 | b->watchpoint_frame = (CORE_ADDR) 0; |
c906108c SS |
5453 | |
5454 | if (mem_cnt && target_resources_ok > 0) | |
5455 | b->type = bp_type; | |
5456 | else | |
5457 | b->type = bp_watchpoint; | |
5458 | ||
5459 | /* If the expression is "local", then set up a "watchpoint scope" | |
5460 | breakpoint at the point where we've left the scope of the watchpoint | |
5461 | expression. */ | |
5462 | if (innermost_block) | |
5463 | { | |
5464 | if (prev_frame) | |
5465 | { | |
5466 | struct breakpoint *scope_breakpoint; | |
5467 | struct symtab_and_line scope_sal; | |
5468 | ||
5469 | INIT_SAL (&scope_sal); /* initialize to zeroes */ | |
c5aa993b | 5470 | scope_sal.pc = get_frame_pc (prev_frame); |
c906108c SS |
5471 | scope_sal.section = find_pc_overlay (scope_sal.pc); |
5472 | ||
5473 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
5474 | set_breakpoint_count (breakpoint_count + 1); | |
5475 | scope_breakpoint->number = breakpoint_count; | |
5476 | ||
5477 | scope_breakpoint->type = bp_watchpoint_scope; | |
5478 | scope_breakpoint->enable = enabled; | |
5479 | ||
5480 | /* Automatically delete the breakpoint when it hits. */ | |
5481 | scope_breakpoint->disposition = del; | |
5482 | ||
5483 | /* Only break in the proper frame (help with recursion). */ | |
5484 | scope_breakpoint->frame = prev_frame->frame; | |
5485 | ||
5486 | /* Set the address at which we will stop. */ | |
5487 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
5488 | ||
5489 | /* The scope breakpoint is related to the watchpoint. We | |
5490 | will need to act on them together. */ | |
5491 | b->related_breakpoint = scope_breakpoint; | |
5492 | } | |
5493 | } | |
5494 | value_free_to_mark (mark); | |
5495 | mention (b); | |
5496 | } | |
5497 | ||
5498 | /* Return count of locations need to be watched and can be handled | |
5499 | in hardware. If the watchpoint can not be handled | |
5500 | in hardware return zero. */ | |
5501 | ||
5502 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d JM |
5503 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
5504 | ((BYTE_SIZE) <= (REGISTER_SIZE)) | |
5505 | #endif | |
5506 | ||
5507 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5508 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
5509 | TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN) | |
c906108c SS |
5510 | #endif |
5511 | ||
5512 | static int | |
5513 | can_use_hardware_watchpoint (v) | |
5514 | struct value *v; | |
5515 | { | |
5516 | int found_memory_cnt = 0; | |
5517 | ||
5518 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5519 | if (!can_use_hw_watchpoints) |
c906108c | 5520 | return 0; |
c5aa993b | 5521 | |
5c44784c JM |
5522 | /* Make sure that the value of the expression depends only upon |
5523 | memory contents, and values computed from them within GDB. If we | |
5524 | find any register references or function calls, we can't use a | |
5525 | hardware watchpoint. | |
5526 | ||
5527 | The idea here is that evaluating an expression generates a series | |
5528 | of values, one holding the value of every subexpression. (The | |
5529 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5530 | a*b+c.) GDB's values hold almost enough information to establish | |
5531 | the criteria given above --- they identify memory lvalues, | |
5532 | register lvalues, computed values, etcetera. So we can evaluate | |
5533 | the expression, and then scan the chain of values that leaves | |
5534 | behind to decide whether we can detect any possible change to the | |
5535 | expression's final value using only hardware watchpoints. | |
5536 | ||
5537 | However, I don't think that the values returned by inferior | |
5538 | function calls are special in any way. So this function may not | |
5539 | notice that an expression involving an inferior function call | |
5540 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5541 | for (; v; v = v->next) |
c906108c | 5542 | { |
5c44784c | 5543 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5544 | { |
5c44784c JM |
5545 | if (VALUE_LAZY (v)) |
5546 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5547 | we either just used its address (e.g., `a' in `a.b') or | |
5548 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5549 | ; | |
53a5351d | 5550 | else |
5c44784c JM |
5551 | { |
5552 | /* Ahh, memory we actually used! Check if we can cover | |
5553 | it with hardware watchpoints. */ | |
5554 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5555 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5556 | ||
5557 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5558 | return 0; | |
5559 | else | |
5560 | found_memory_cnt++; | |
5561 | } | |
c5aa993b | 5562 | } |
c906108c | 5563 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5564 | return 0; /* ??? What does this represent? */ |
5565 | else if (v->lval == lval_register) | |
5566 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5567 | } |
5568 | ||
5569 | /* The expression itself looks suitable for using a hardware | |
5570 | watchpoint, but give the target machine a chance to reject it. */ | |
5571 | return found_memory_cnt; | |
5572 | } | |
5573 | ||
8b93c638 JM |
5574 | #ifdef UI_OUT |
5575 | void | |
5576 | watch_command_wrapper (arg, from_tty) | |
5577 | char *arg; | |
5578 | int from_tty; | |
5579 | { | |
5580 | watch_command (arg, from_tty); | |
5581 | } | |
5582 | #endif | |
c5aa993b JM |
5583 | static void |
5584 | watch_command (arg, from_tty) | |
c906108c SS |
5585 | char *arg; |
5586 | int from_tty; | |
5587 | { | |
53a5351d | 5588 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5589 | } |
5590 | ||
8b93c638 JM |
5591 | #ifdef UI_OUT |
5592 | void | |
5593 | rwatch_command_wrapper (arg, from_tty) | |
5594 | char *arg; | |
5595 | int from_tty; | |
5596 | { | |
5597 | rwatch_command (arg, from_tty); | |
5598 | } | |
5599 | #endif | |
c5aa993b JM |
5600 | static void |
5601 | rwatch_command (arg, from_tty) | |
c906108c SS |
5602 | char *arg; |
5603 | int from_tty; | |
5604 | { | |
53a5351d | 5605 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5606 | } |
5607 | ||
8b93c638 JM |
5608 | #ifdef UI_OUT |
5609 | void | |
5610 | awatch_command_wrapper (arg, from_tty) | |
5611 | char *arg; | |
5612 | int from_tty; | |
5613 | { | |
5614 | awatch_command (arg, from_tty); | |
5615 | } | |
5616 | #endif | |
c5aa993b JM |
5617 | static void |
5618 | awatch_command (arg, from_tty) | |
c906108c SS |
5619 | char *arg; |
5620 | int from_tty; | |
5621 | { | |
53a5351d | 5622 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5623 | } |
c906108c | 5624 | \f |
c5aa993b | 5625 | |
43ff13b4 | 5626 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5627 | because it uses the mechanisms of breakpoints. */ |
5628 | ||
43ff13b4 JM |
5629 | /* This function is called by fetch_inferior_event via the |
5630 | cmd_continuation pointer, to complete the until command. It takes | |
5631 | care of cleaning up the temporary breakpoints set up by the until | |
5632 | command. */ | |
c2c6d25f JM |
5633 | static void |
5634 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5635 | { |
0d06e24b JM |
5636 | struct cleanup *cleanups; |
5637 | ||
5638 | cleanups = (struct cleanup *) arg->data; | |
5639 | do_exec_cleanups (cleanups); | |
43ff13b4 JM |
5640 | } |
5641 | ||
c906108c SS |
5642 | /* ARGSUSED */ |
5643 | void | |
5644 | until_break_command (arg, from_tty) | |
5645 | char *arg; | |
5646 | int from_tty; | |
5647 | { | |
5648 | struct symtabs_and_lines sals; | |
5649 | struct symtab_and_line sal; | |
5650 | struct frame_info *prev_frame = get_prev_frame (selected_frame); | |
5651 | struct breakpoint *breakpoint; | |
5652 | struct cleanup *old_chain; | |
0d06e24b JM |
5653 | struct continuation_arg *arg1; |
5654 | ||
c906108c SS |
5655 | |
5656 | clear_proceed_status (); | |
5657 | ||
5658 | /* Set a breakpoint where the user wants it and at return from | |
5659 | this function */ | |
c5aa993b | 5660 | |
c906108c SS |
5661 | if (default_breakpoint_valid) |
5662 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 5663 | default_breakpoint_line, (char ***) NULL); |
c906108c | 5664 | else |
53a5351d JM |
5665 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
5666 | 0, (char ***) NULL); | |
c5aa993b | 5667 | |
c906108c SS |
5668 | if (sals.nelts != 1) |
5669 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5670 | |
c906108c | 5671 | sal = sals.sals[0]; |
c5aa993b JM |
5672 | free ((PTR) sals.sals); /* malloc'd, so freed */ |
5673 | ||
c906108c SS |
5674 | if (*arg) |
5675 | error ("Junk at end of arguments."); | |
c5aa993b | 5676 | |
c906108c | 5677 | resolve_sal_pc (&sal); |
c5aa993b | 5678 | |
c906108c | 5679 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
c5aa993b | 5680 | |
6426a772 | 5681 | if (!event_loop_p || !target_can_async_p ()) |
53a5351d JM |
5682 | old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, |
5683 | breakpoint); | |
43ff13b4 | 5684 | else |
0d06e24b | 5685 | old_chain = make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
43ff13b4 JM |
5686 | |
5687 | /* If we are running asynchronously, and the target supports async | |
5688 | execution, we are not waiting for the target to stop, in the call | |
5689 | tp proceed, below. This means that we cannot delete the | |
5690 | brekpoints until the target has actually stopped. The only place | |
5691 | where we get a chance to do that is in fetch_inferior_event, so | |
5692 | we must set things up for that. */ | |
5693 | ||
6426a772 | 5694 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 5695 | { |
0d06e24b JM |
5696 | /* In this case the arg for the continuation is just the point |
5697 | in the exec_cleanups chain from where to start doing | |
5698 | cleanups, because all the continuation does is the cleanups in | |
5699 | the exec_cleanup_chain. */ | |
5700 | arg1 = | |
5701 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
5702 | arg1->next = NULL; | |
5703 | arg1->data = (PTR) old_chain; | |
5704 | ||
5705 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5706 | } |
c906108c SS |
5707 | |
5708 | /* Keep within the current frame */ | |
c5aa993b | 5709 | |
c906108c SS |
5710 | if (prev_frame) |
5711 | { | |
5712 | sal = find_pc_line (prev_frame->pc, 0); | |
5713 | sal.pc = prev_frame->pc; | |
5714 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); | |
6426a772 | 5715 | if (!event_loop_p || !target_can_async_p ()) |
43ff13b4 JM |
5716 | make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
5717 | else | |
5718 | make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); | |
c906108c | 5719 | } |
c5aa993b | 5720 | |
c906108c | 5721 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5722 | /* Do the cleanups now, anly if we are not running asynchronously, |
5723 | of if we are, but the target is still synchronous. */ | |
6426a772 | 5724 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 5725 | do_cleanups (old_chain); |
c906108c SS |
5726 | } |
5727 | \f | |
5728 | #if 0 | |
5729 | /* These aren't used; I don't konw what they were for. */ | |
5730 | /* Set a breakpoint at the catch clause for NAME. */ | |
5731 | static int | |
5732 | catch_breakpoint (name) | |
5733 | char *name; | |
5734 | { | |
5735 | } | |
5736 | ||
5737 | static int | |
5738 | disable_catch_breakpoint () | |
5739 | { | |
5740 | } | |
5741 | ||
5742 | static int | |
5743 | delete_catch_breakpoint () | |
5744 | { | |
5745 | } | |
5746 | ||
5747 | static int | |
5748 | enable_catch_breakpoint () | |
5749 | { | |
5750 | } | |
5751 | #endif /* 0 */ | |
5752 | ||
5753 | struct sal_chain | |
5754 | { | |
5755 | struct sal_chain *next; | |
5756 | struct symtab_and_line sal; | |
5757 | }; | |
5758 | ||
7a292a7a | 5759 | #if 0 |
c906108c SS |
5760 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
5761 | had been commented out in the v.4.16 sources, and stays | |
5762 | disabled there now because "catch NAME" syntax isn't allowed. | |
5763 | pai/1997-07-11 */ | |
5764 | /* This isn't used; I don't know what it was for. */ | |
5765 | /* For each catch clause identified in ARGS, run FUNCTION | |
5766 | with that clause as an argument. */ | |
5767 | static struct symtabs_and_lines | |
5768 | map_catch_names (args, function) | |
5769 | char *args; | |
c5aa993b | 5770 | int (*function) (); |
c906108c SS |
5771 | { |
5772 | register char *p = args; | |
5773 | register char *p1; | |
5774 | struct symtabs_and_lines sals; | |
5775 | #if 0 | |
5776 | struct sal_chain *sal_chain = 0; | |
5777 | #endif | |
5778 | ||
5779 | if (p == 0) | |
5780 | error_no_arg ("one or more catch names"); | |
5781 | ||
5782 | sals.nelts = 0; | |
5783 | sals.sals = NULL; | |
5784 | ||
5785 | while (*p) | |
5786 | { | |
5787 | p1 = p; | |
5788 | /* Don't swallow conditional part. */ | |
5789 | if (p1[0] == 'i' && p1[1] == 'f' | |
5790 | && (p1[2] == ' ' || p1[2] == '\t')) | |
5791 | break; | |
5792 | ||
5793 | if (isalpha (*p1)) | |
5794 | { | |
5795 | p1++; | |
5796 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
5797 | p1++; | |
5798 | } | |
5799 | ||
5800 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
5801 | error ("Arguments must be catch names."); | |
5802 | ||
5803 | *p1 = 0; | |
5804 | #if 0 | |
5805 | if (function (p)) | |
5806 | { | |
5807 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5808 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
5809 | next->next = sal_chain; |
5810 | next->sal = get_catch_sal (p); | |
5811 | sal_chain = next; | |
5812 | goto win; | |
5813 | } | |
5814 | #endif | |
5815 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
5816 | #if 0 | |
5817 | win: | |
5818 | #endif | |
5819 | p = p1; | |
c5aa993b JM |
5820 | while (*p == ' ' || *p == '\t') |
5821 | p++; | |
c906108c SS |
5822 | } |
5823 | } | |
7a292a7a | 5824 | #endif |
c906108c SS |
5825 | |
5826 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
5827 | ||
5828 | static struct symtabs_and_lines | |
5829 | get_catch_sals (this_level_only) | |
5830 | int this_level_only; | |
5831 | { | |
5832 | register struct blockvector *bl; | |
5833 | register struct block *block; | |
5834 | int index, have_default = 0; | |
5835 | CORE_ADDR pc; | |
5836 | struct symtabs_and_lines sals; | |
5837 | struct sal_chain *sal_chain = 0; | |
5838 | char *blocks_searched; | |
5839 | ||
5840 | /* Not sure whether an error message is always the correct response, | |
5841 | but it's better than a core dump. */ | |
5842 | if (selected_frame == NULL) | |
5843 | error ("No selected frame."); | |
5844 | block = get_frame_block (selected_frame); | |
5845 | pc = selected_frame->pc; | |
5846 | ||
5847 | sals.nelts = 0; | |
5848 | sals.sals = NULL; | |
5849 | ||
5850 | if (block == 0) | |
5851 | error ("No symbol table info available.\n"); | |
5852 | ||
5853 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
5854 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5855 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5856 | ||
5857 | while (block != 0) | |
5858 | { | |
5859 | CORE_ADDR end = BLOCK_END (block) - 4; | |
5860 | int last_index; | |
5861 | ||
5862 | if (bl != blockvector_for_pc (end, &index)) | |
5863 | error ("blockvector blotch"); | |
5864 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
5865 | error ("blockvector botch"); | |
5866 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
5867 | index += 1; | |
5868 | ||
5869 | /* Don't print out blocks that have gone by. */ | |
5870 | while (index < last_index | |
5871 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
5872 | index++; | |
5873 | ||
5874 | while (index < last_index | |
5875 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
5876 | { | |
5877 | if (blocks_searched[index] == 0) | |
5878 | { | |
5879 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
5880 | int nsyms; | |
5881 | register int i; | |
5882 | register struct symbol *sym; | |
5883 | ||
5884 | nsyms = BLOCK_NSYMS (b); | |
5885 | ||
5886 | for (i = 0; i < nsyms; i++) | |
5887 | { | |
5888 | sym = BLOCK_SYM (b, i); | |
5889 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
5890 | { | |
5891 | if (have_default) | |
5892 | continue; | |
5893 | have_default = 1; | |
5894 | } | |
5895 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
5896 | { | |
5897 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5898 | alloca (sizeof (struct sal_chain)); |
c906108c | 5899 | next->next = sal_chain; |
53a5351d JM |
5900 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
5901 | 0); | |
c906108c SS |
5902 | sal_chain = next; |
5903 | } | |
5904 | } | |
5905 | blocks_searched[index] = 1; | |
5906 | } | |
5907 | index++; | |
5908 | } | |
5909 | if (have_default) | |
5910 | break; | |
5911 | if (sal_chain && this_level_only) | |
5912 | break; | |
5913 | ||
5914 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
5915 | Don't continue to its superblock, the block of |
5916 | per-file symbols. */ | |
c906108c SS |
5917 | if (BLOCK_FUNCTION (block)) |
5918 | break; | |
5919 | block = BLOCK_SUPERBLOCK (block); | |
5920 | } | |
5921 | ||
5922 | if (sal_chain) | |
5923 | { | |
5924 | struct sal_chain *tmp_chain; | |
5925 | ||
5926 | /* Count the number of entries. */ | |
5927 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
5928 | tmp_chain = tmp_chain->next) | |
5929 | index++; | |
5930 | ||
5931 | sals.nelts = index; | |
5932 | sals.sals = (struct symtab_and_line *) | |
5933 | xmalloc (index * sizeof (struct symtab_and_line)); | |
5934 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
5935 | sals.sals[index] = sal_chain->sal; | |
5936 | } | |
5937 | ||
5938 | return sals; | |
5939 | } | |
5940 | ||
5941 | static void | |
5942 | ep_skip_leading_whitespace (s) | |
7a292a7a | 5943 | char **s; |
c906108c | 5944 | { |
c5aa993b JM |
5945 | if ((s == NULL) || (*s == NULL)) |
5946 | return; | |
5947 | while (isspace (**s)) | |
5948 | *s += 1; | |
c906108c | 5949 | } |
c5aa993b | 5950 | |
c906108c SS |
5951 | /* This function examines a string, and attempts to find a token |
5952 | that might be an event name in the leading characters. If a | |
5953 | possible match is found, a pointer to the last character of | |
5954 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5955 | |
c906108c SS |
5956 | static char * |
5957 | ep_find_event_name_end (arg) | |
7a292a7a | 5958 | char *arg; |
c906108c | 5959 | { |
c5aa993b JM |
5960 | char *s = arg; |
5961 | char *event_name_end = NULL; | |
5962 | ||
c906108c SS |
5963 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5964 | if (arg == NULL) | |
5965 | return NULL; | |
c5aa993b | 5966 | |
c906108c | 5967 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5968 | Basically, we're looking for alphanumerics and underscores; |
5969 | anything else delimites the token. */ | |
c906108c SS |
5970 | while (*s != '\0') |
5971 | { | |
c5aa993b JM |
5972 | if (!isalnum (*s) && (*s != '_')) |
5973 | break; | |
c906108c SS |
5974 | event_name_end = s; |
5975 | s++; | |
5976 | } | |
c5aa993b | 5977 | |
c906108c SS |
5978 | return event_name_end; |
5979 | } | |
5980 | ||
c5aa993b | 5981 | |
c906108c SS |
5982 | /* This function attempts to parse an optional "if <cond>" clause |
5983 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5984 | |
c906108c SS |
5985 | Else, it returns a pointer to the condition string. (It does not |
5986 | attempt to evaluate the string against a particular block.) And, | |
5987 | it updates arg to point to the first character following the parsed | |
5988 | if clause in the arg string. */ | |
53a5351d | 5989 | |
c906108c SS |
5990 | static char * |
5991 | ep_parse_optional_if_clause (arg) | |
7a292a7a | 5992 | char **arg; |
c906108c | 5993 | { |
c5aa993b JM |
5994 | char *cond_string; |
5995 | ||
5996 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5997 | return NULL; |
c5aa993b | 5998 | |
c906108c SS |
5999 | /* Skip the "if" keyword. */ |
6000 | (*arg) += 2; | |
c5aa993b | 6001 | |
c906108c SS |
6002 | /* Skip any extra leading whitespace, and record the start of the |
6003 | condition string. */ | |
6004 | ep_skip_leading_whitespace (arg); | |
6005 | cond_string = *arg; | |
c5aa993b | 6006 | |
c906108c SS |
6007 | /* Assume that the condition occupies the remainder of the arg string. */ |
6008 | (*arg) += strlen (cond_string); | |
c5aa993b | 6009 | |
c906108c SS |
6010 | return cond_string; |
6011 | } | |
c5aa993b | 6012 | |
c906108c SS |
6013 | /* This function attempts to parse an optional filename from the arg |
6014 | string. If one is not found, it returns NULL. | |
c5aa993b | 6015 | |
c906108c SS |
6016 | Else, it returns a pointer to the parsed filename. (This function |
6017 | makes no attempt to verify that a file of that name exists, or is | |
6018 | accessible.) And, it updates arg to point to the first character | |
6019 | following the parsed filename in the arg string. | |
c5aa993b | 6020 | |
c906108c SS |
6021 | Note that clients needing to preserve the returned filename for |
6022 | future access should copy it to their own buffers. */ | |
6023 | static char * | |
6024 | ep_parse_optional_filename (arg) | |
7a292a7a | 6025 | char **arg; |
c906108c | 6026 | { |
c5aa993b JM |
6027 | static char filename[1024]; |
6028 | char *arg_p = *arg; | |
6029 | int i; | |
6030 | char c; | |
6031 | ||
c906108c SS |
6032 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6033 | return NULL; | |
c5aa993b JM |
6034 | |
6035 | for (i = 0;; i++) | |
c906108c SS |
6036 | { |
6037 | c = *arg_p; | |
6038 | if (isspace (c)) | |
c5aa993b | 6039 | c = '\0'; |
c906108c SS |
6040 | filename[i] = c; |
6041 | if (c == '\0') | |
c5aa993b | 6042 | break; |
c906108c SS |
6043 | arg_p++; |
6044 | } | |
6045 | *arg = arg_p; | |
c5aa993b | 6046 | |
c906108c SS |
6047 | return filename; |
6048 | } | |
c5aa993b | 6049 | |
c906108c SS |
6050 | /* Commands to deal with catching events, such as signals, exceptions, |
6051 | process start/exit, etc. */ | |
c5aa993b JM |
6052 | |
6053 | typedef enum | |
6054 | { | |
6055 | catch_fork, catch_vfork | |
6056 | } | |
6057 | catch_fork_kind; | |
6058 | ||
e514a9d6 | 6059 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
53a5351d JM |
6060 | static void catch_fork_command_1 PARAMS ((catch_fork_kind fork_kind, |
6061 | char *arg, | |
6062 | int tempflag, | |
6063 | int from_tty)); | |
7a292a7a | 6064 | |
c906108c SS |
6065 | static void |
6066 | catch_fork_command_1 (fork_kind, arg, tempflag, from_tty) | |
7a292a7a SS |
6067 | catch_fork_kind fork_kind; |
6068 | char *arg; | |
6069 | int tempflag; | |
6070 | int from_tty; | |
c906108c | 6071 | { |
c5aa993b JM |
6072 | char *cond_string = NULL; |
6073 | ||
c906108c | 6074 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6075 | |
c906108c | 6076 | /* The allowed syntax is: |
c5aa993b JM |
6077 | catch [v]fork |
6078 | catch [v]fork if <cond> | |
6079 | ||
c906108c SS |
6080 | First, check if there's an if clause. */ |
6081 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6082 | |
c906108c SS |
6083 | if ((*arg != '\0') && !isspace (*arg)) |
6084 | error ("Junk at end of arguments."); | |
c5aa993b | 6085 | |
c906108c SS |
6086 | /* If this target supports it, create a fork or vfork catchpoint |
6087 | and enable reporting of such events. */ | |
c5aa993b JM |
6088 | switch (fork_kind) |
6089 | { | |
6090 | case catch_fork: | |
c906108c SS |
6091 | create_fork_event_catchpoint (tempflag, cond_string); |
6092 | break; | |
c5aa993b | 6093 | case catch_vfork: |
c906108c SS |
6094 | create_vfork_event_catchpoint (tempflag, cond_string); |
6095 | break; | |
c5aa993b | 6096 | default: |
c906108c SS |
6097 | error ("unsupported or unknown fork kind; cannot catch it"); |
6098 | break; | |
c5aa993b | 6099 | } |
c906108c | 6100 | } |
e514a9d6 | 6101 | #endif |
c906108c | 6102 | |
e514a9d6 | 6103 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c SS |
6104 | static void |
6105 | catch_exec_command_1 (arg, tempflag, from_tty) | |
7a292a7a SS |
6106 | char *arg; |
6107 | int tempflag; | |
6108 | int from_tty; | |
c906108c | 6109 | { |
c5aa993b | 6110 | char *cond_string = NULL; |
c906108c SS |
6111 | |
6112 | ep_skip_leading_whitespace (&arg); | |
6113 | ||
6114 | /* The allowed syntax is: | |
c5aa993b JM |
6115 | catch exec |
6116 | catch exec if <cond> | |
c906108c SS |
6117 | |
6118 | First, check if there's an if clause. */ | |
6119 | cond_string = ep_parse_optional_if_clause (&arg); | |
6120 | ||
6121 | if ((*arg != '\0') && !isspace (*arg)) | |
6122 | error ("Junk at end of arguments."); | |
6123 | ||
6124 | /* If this target supports it, create an exec catchpoint | |
6125 | and enable reporting of such events. */ | |
6126 | create_exec_event_catchpoint (tempflag, cond_string); | |
6127 | } | |
e514a9d6 | 6128 | #endif |
c5aa993b | 6129 | |
c906108c SS |
6130 | #if defined(SOLIB_ADD) |
6131 | static void | |
6132 | catch_load_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
6133 | char *arg; |
6134 | int tempflag; | |
6135 | int from_tty; | |
c906108c | 6136 | { |
c5aa993b JM |
6137 | char *dll_pathname = NULL; |
6138 | char *cond_string = NULL; | |
6139 | ||
c906108c | 6140 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6141 | |
c906108c | 6142 | /* The allowed syntax is: |
c5aa993b JM |
6143 | catch load |
6144 | catch load if <cond> | |
6145 | catch load <filename> | |
6146 | catch load <filename> if <cond> | |
6147 | ||
c906108c SS |
6148 | The user is not allowed to specify the <filename> after an |
6149 | if clause. | |
c5aa993b | 6150 | |
c906108c | 6151 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6152 | |
c906108c SS |
6153 | First, check if there's an if clause. If so, then there |
6154 | cannot be a filename. */ | |
6155 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6156 | |
c906108c SS |
6157 | /* If there was an if clause, then there cannot be a filename. |
6158 | Else, there might be a filename and an if clause. */ | |
6159 | if (cond_string == NULL) | |
6160 | { | |
6161 | dll_pathname = ep_parse_optional_filename (&arg); | |
6162 | ep_skip_leading_whitespace (&arg); | |
6163 | cond_string = ep_parse_optional_if_clause (&arg); | |
6164 | } | |
c5aa993b | 6165 | |
c906108c SS |
6166 | if ((*arg != '\0') && !isspace (*arg)) |
6167 | error ("Junk at end of arguments."); | |
c5aa993b | 6168 | |
c906108c SS |
6169 | /* Create a load breakpoint that only triggers when a load of |
6170 | the specified dll (or any dll, if no pathname was specified) | |
6171 | occurs. */ | |
53a5351d JM |
6172 | SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, |
6173 | dll_pathname, cond_string); | |
c906108c | 6174 | } |
c5aa993b | 6175 | |
c906108c SS |
6176 | static void |
6177 | catch_unload_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
6178 | char *arg; |
6179 | int tempflag; | |
6180 | int from_tty; | |
c906108c | 6181 | { |
c5aa993b JM |
6182 | char *dll_pathname = NULL; |
6183 | char *cond_string = NULL; | |
6184 | ||
c906108c | 6185 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6186 | |
c906108c | 6187 | /* The allowed syntax is: |
c5aa993b JM |
6188 | catch unload |
6189 | catch unload if <cond> | |
6190 | catch unload <filename> | |
6191 | catch unload <filename> if <cond> | |
6192 | ||
c906108c SS |
6193 | The user is not allowed to specify the <filename> after an |
6194 | if clause. | |
c5aa993b | 6195 | |
c906108c | 6196 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6197 | |
c906108c SS |
6198 | First, check if there's an if clause. If so, then there |
6199 | cannot be a filename. */ | |
6200 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6201 | |
c906108c SS |
6202 | /* If there was an if clause, then there cannot be a filename. |
6203 | Else, there might be a filename and an if clause. */ | |
6204 | if (cond_string == NULL) | |
6205 | { | |
6206 | dll_pathname = ep_parse_optional_filename (&arg); | |
6207 | ep_skip_leading_whitespace (&arg); | |
6208 | cond_string = ep_parse_optional_if_clause (&arg); | |
6209 | } | |
c5aa993b | 6210 | |
c906108c SS |
6211 | if ((*arg != '\0') && !isspace (*arg)) |
6212 | error ("Junk at end of arguments."); | |
c5aa993b | 6213 | |
c906108c SS |
6214 | /* Create an unload breakpoint that only triggers when an unload of |
6215 | the specified dll (or any dll, if no pathname was specified) | |
6216 | occurs. */ | |
53a5351d JM |
6217 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, |
6218 | dll_pathname, cond_string); | |
c906108c SS |
6219 | } |
6220 | #endif /* SOLIB_ADD */ | |
6221 | ||
6222 | /* Commands to deal with catching exceptions. */ | |
6223 | ||
6224 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6225 | exception event callback */ |
c906108c SS |
6226 | |
6227 | static void | |
6228 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal) | |
7a292a7a SS |
6229 | int tempflag; |
6230 | char *cond_string; | |
6231 | enum exception_event_kind ex_event; | |
6232 | struct symtab_and_line *sal; | |
c906108c | 6233 | { |
c5aa993b | 6234 | struct breakpoint *b; |
c5aa993b | 6235 | int thread = -1; /* All threads. */ |
c906108c | 6236 | |
c5aa993b | 6237 | if (!sal) /* no exception support? */ |
c906108c SS |
6238 | return; |
6239 | ||
6240 | b = set_raw_breakpoint (*sal); | |
6241 | set_breakpoint_count (breakpoint_count + 1); | |
6242 | b->number = breakpoint_count; | |
6243 | b->cond = NULL; | |
53a5351d JM |
6244 | b->cond_string = (cond_string == NULL) ? |
6245 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
6246 | b->thread = thread; |
6247 | b->addr_string = NULL; | |
6248 | b->enable = enabled; | |
6249 | b->disposition = tempflag ? del : donttouch; | |
6250 | switch (ex_event) | |
6251 | { | |
c5aa993b JM |
6252 | case EX_EVENT_THROW: |
6253 | b->type = bp_catch_throw; | |
6254 | break; | |
6255 | case EX_EVENT_CATCH: | |
6256 | b->type = bp_catch_catch; | |
6257 | break; | |
6258 | default: /* error condition */ | |
6259 | b->type = bp_none; | |
6260 | b->enable = disabled; | |
6261 | error ("Internal error -- invalid catchpoint kind"); | |
c906108c SS |
6262 | } |
6263 | mention (b); | |
6264 | } | |
6265 | ||
c5aa993b | 6266 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6267 | |
6268 | static void | |
6269 | catch_exception_command_1 (ex_event, arg, tempflag, from_tty) | |
7a292a7a SS |
6270 | enum exception_event_kind ex_event; |
6271 | char *arg; | |
6272 | int tempflag; | |
6273 | int from_tty; | |
c906108c | 6274 | { |
c5aa993b JM |
6275 | char *cond_string = NULL; |
6276 | struct symtab_and_line *sal = NULL; | |
6277 | ||
c906108c | 6278 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6279 | |
c906108c SS |
6280 | cond_string = ep_parse_optional_if_clause (&arg); |
6281 | ||
6282 | if ((*arg != '\0') && !isspace (*arg)) | |
6283 | error ("Junk at end of arguments."); | |
6284 | ||
6285 | if ((ex_event != EX_EVENT_THROW) && | |
6286 | (ex_event != EX_EVENT_CATCH)) | |
6287 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6288 | ||
6289 | /* See if we can find a callback routine */ | |
6290 | sal = target_enable_exception_callback (ex_event, 1); | |
6291 | ||
c5aa993b | 6292 | if (sal) |
c906108c SS |
6293 | { |
6294 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6295 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6296 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6297 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6298 | else |
53a5351d | 6299 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6300 | } |
c5aa993b | 6301 | else |
c906108c SS |
6302 | { |
6303 | /* No callbacks from runtime system for exceptions. | |
6304 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
6305 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
6306 | { |
6307 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
6308 | } | |
c906108c | 6309 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
6310 | { |
6311 | /* Set a breakpoint on __raise_exception () */ | |
6312 | ||
53a5351d JM |
6313 | warning ("Unsupported with this platform/compiler combination."); |
6314 | warning ("Perhaps you can achieve the effect you want by setting"); | |
6315 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 6316 | } |
c906108c SS |
6317 | } |
6318 | } | |
6319 | ||
6320 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6321 | inside a catch_errors */ | |
6322 | ||
6323 | static int | |
6324 | cover_target_enable_exception_callback (arg) | |
c5aa993b | 6325 | PTR arg; |
c906108c SS |
6326 | { |
6327 | args_for_catchpoint_enable *args = arg; | |
6328 | struct symtab_and_line *sal; | |
6329 | sal = target_enable_exception_callback (args->kind, args->enable); | |
6330 | if (sal == NULL) | |
6331 | return 0; | |
6332 | else if (sal == (struct symtab_and_line *) -1) | |
6333 | return -1; | |
6334 | else | |
c5aa993b | 6335 | return 1; /*is valid */ |
c906108c SS |
6336 | } |
6337 | ||
6338 | ||
6339 | ||
6340 | /* This is the original v.4.16 and earlier version of the | |
6341 | catch_command_1() function. Now that other flavours of "catch" | |
6342 | have been introduced, and since exception handling can be handled | |
6343 | in other ways (through target ops) also, this is used only for the | |
6344 | GNU C++ exception handling system. | |
6345 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
6346 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
6347 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 6348 | |
c906108c SS |
6349 | Called from catch_exception_command_1 () */ |
6350 | ||
6351 | ||
6352 | static void | |
6353 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty) | |
6354 | char *arg; | |
6355 | int tempflag; | |
6356 | int from_tty; | |
6357 | { | |
6358 | /* First, translate ARG into something we can deal with in terms | |
6359 | of breakpoints. */ | |
6360 | ||
6361 | struct symtabs_and_lines sals; | |
6362 | struct symtab_and_line sal; | |
6363 | register struct expression *cond = 0; | |
6364 | register struct breakpoint *b; | |
6365 | char *save_arg; | |
6366 | int i; | |
6367 | ||
c5aa993b | 6368 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6369 | |
6370 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
6371 | are breakpointed. */ | |
6372 | ||
c5aa993b | 6373 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
6374 | && (arg[2] == ' ' || arg[2] == '\t'))) |
6375 | { | |
6376 | /* Grab all active catch clauses. */ | |
6377 | sals = get_catch_sals (0); | |
6378 | } | |
6379 | else | |
6380 | { | |
6381 | /* Grab selected catch clauses. */ | |
6382 | error ("catch NAME not implemented"); | |
6383 | ||
6384 | #if 0 | |
6385 | /* Not sure why this code has been disabled. I'm leaving | |
6386 | it disabled. We can never come here now anyway | |
6387 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 6388 | pai/1997-07-11 */ |
c906108c SS |
6389 | |
6390 | /* This isn't used; I don't know what it was for. */ | |
6391 | sals = map_catch_names (arg, catch_breakpoint); | |
6392 | #endif | |
6393 | } | |
6394 | ||
c5aa993b | 6395 | if (!sals.nelts) |
c906108c SS |
6396 | return; |
6397 | ||
6398 | save_arg = arg; | |
6399 | for (i = 0; i < sals.nelts; i++) | |
6400 | { | |
6401 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 6402 | |
c906108c SS |
6403 | while (arg && *arg) |
6404 | { | |
6405 | if (arg[0] == 'i' && arg[1] == 'f' | |
6406 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 6407 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
6408 | block_for_pc (sals.sals[i].pc), 0); |
6409 | else | |
6410 | error ("Junk at end of arguments."); | |
6411 | } | |
6412 | arg = save_arg; | |
6413 | } | |
6414 | ||
6415 | for (i = 0; i < sals.nelts; i++) | |
6416 | { | |
6417 | sal = sals.sals[i]; | |
6418 | ||
6419 | if (from_tty) | |
6420 | describe_other_breakpoints (sal.pc, sal.section); | |
6421 | ||
6422 | b = set_raw_breakpoint (sal); | |
6423 | set_breakpoint_count (breakpoint_count + 1); | |
6424 | b->number = breakpoint_count; | |
53a5351d JM |
6425 | |
6426 | /* Important -- this is an ordinary breakpoint. For platforms | |
6427 | with callback support for exceptions, | |
6428 | create_exception_catchpoint() will create special bp types | |
6429 | (bp_catch_catch and bp_catch_throw), and there is code in | |
6430 | insert_breakpoints() and elsewhere that depends on that. */ | |
6431 | b->type = bp_breakpoint; | |
c906108c SS |
6432 | |
6433 | b->cond = cond; | |
6434 | b->enable = enabled; | |
6435 | b->disposition = tempflag ? del : donttouch; | |
6436 | ||
6437 | mention (b); | |
6438 | } | |
6439 | ||
6440 | if (sals.nelts > 1) | |
6441 | { | |
53a5351d JM |
6442 | warning ("Multiple breakpoints were set."); |
6443 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 6444 | } |
c5aa993b | 6445 | free ((PTR) sals.sals); |
c906108c SS |
6446 | } |
6447 | ||
6448 | #if 0 | |
6449 | /* This creates a temporary internal breakpoint | |
6450 | just to placate infrun */ | |
6451 | static struct breakpoint * | |
6452 | create_temp_exception_breakpoint (pc) | |
c5aa993b | 6453 | CORE_ADDR pc; |
c906108c SS |
6454 | { |
6455 | struct symtab_and_line sal; | |
6456 | struct breakpoint *b; | |
6457 | ||
c5aa993b | 6458 | INIT_SAL (&sal); |
c906108c SS |
6459 | sal.pc = pc; |
6460 | sal.symtab = NULL; | |
6461 | sal.line = 0; | |
6462 | ||
6463 | b = set_raw_breakpoint (sal); | |
6464 | if (!b) | |
6465 | error ("Internal error -- couldn't set temp exception breakpoint"); | |
6466 | ||
6467 | b->type = bp_breakpoint; | |
6468 | b->disposition = del; | |
6469 | b->enable = enabled; | |
6470 | b->silent = 1; | |
6471 | b->number = internal_breakpoint_number--; | |
6472 | return b; | |
6473 | } | |
6474 | #endif | |
6475 | ||
6476 | static void | |
6477 | catch_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
6478 | char *arg; |
6479 | int tempflag; | |
6480 | int from_tty; | |
c906108c | 6481 | { |
c5aa993b | 6482 | |
c906108c SS |
6483 | /* The first argument may be an event name, such as "start" or "load". |
6484 | If so, then handle it as such. If it doesn't match an event name, | |
6485 | then attempt to interpret it as an exception name. (This latter is | |
6486 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6487 | |
c906108c | 6488 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6489 | char *arg1_start = arg; |
6490 | char *arg1_end; | |
6491 | int arg1_length; | |
6492 | ||
c906108c SS |
6493 | if (arg1_start == NULL) |
6494 | { | |
c5aa993b | 6495 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6496 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6497 | /* return; */ | |
c5aa993b | 6498 | /* Now, this is not allowed */ |
c906108c SS |
6499 | error ("Catch requires an event name."); |
6500 | ||
6501 | } | |
6502 | arg1_end = ep_find_event_name_end (arg1_start); | |
6503 | if (arg1_end == NULL) | |
6504 | error ("catch requires an event"); | |
6505 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6506 | |
c906108c SS |
6507 | /* Try to match what we found against known event names. */ |
6508 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6509 | { | |
6510 | error ("Catch of signal not yet implemented"); | |
6511 | } | |
6512 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6513 | { | |
53a5351d JM |
6514 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6515 | tempflag, from_tty); | |
c906108c SS |
6516 | } |
6517 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6518 | { | |
53a5351d JM |
6519 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6520 | tempflag, from_tty); | |
c906108c SS |
6521 | } |
6522 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6523 | { | |
6524 | error ("Catch of thread_start not yet implemented"); | |
6525 | } | |
6526 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6527 | { | |
6528 | error ("Catch of thread_exit not yet implemented"); | |
6529 | } | |
6530 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6531 | { | |
6532 | error ("Catch of thread_join not yet implemented"); | |
6533 | } | |
6534 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6535 | { | |
6536 | error ("Catch of start not yet implemented"); | |
6537 | } | |
6538 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6539 | { | |
6540 | error ("Catch of exit not yet implemented"); | |
6541 | } | |
6542 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6543 | { | |
6544 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 6545 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6546 | #else |
6547 | error ("Catch of fork not yet implemented"); | |
6548 | #endif | |
6549 | } | |
6550 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6551 | { | |
6552 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 6553 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6554 | #else |
6555 | error ("Catch of vfork not yet implemented"); | |
6556 | #endif | |
6557 | } | |
6558 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6559 | { | |
6560 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 6561 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6562 | #else |
6563 | error ("Catch of exec not yet implemented"); | |
6564 | #endif | |
6565 | } | |
6566 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6567 | { | |
6568 | #if defined(SOLIB_ADD) | |
c5aa993b | 6569 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6570 | #else |
6571 | error ("Catch of load not implemented"); | |
6572 | #endif | |
6573 | } | |
6574 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6575 | { | |
6576 | #if defined(SOLIB_ADD) | |
c5aa993b | 6577 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6578 | #else |
6579 | error ("Catch of load not implemented"); | |
6580 | #endif | |
6581 | } | |
6582 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6583 | { | |
6584 | error ("Catch of stop not yet implemented"); | |
6585 | } | |
c5aa993b | 6586 | |
c906108c SS |
6587 | /* This doesn't appear to be an event name */ |
6588 | ||
6589 | else | |
6590 | { | |
6591 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6592 | as the name of an exception */ |
c906108c | 6593 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6594 | /* Now this is not allowed */ |
c906108c SS |
6595 | error ("Unknown event kind specified for catch"); |
6596 | ||
6597 | } | |
6598 | } | |
6599 | ||
6600 | /* Used by the gui, could be made a worker for other things. */ | |
6601 | ||
6602 | struct breakpoint * | |
6603 | set_breakpoint_sal (sal) | |
6604 | struct symtab_and_line sal; | |
6605 | { | |
6606 | struct breakpoint *b; | |
6607 | b = set_raw_breakpoint (sal); | |
6608 | set_breakpoint_count (breakpoint_count + 1); | |
6609 | b->number = breakpoint_count; | |
6610 | b->type = bp_breakpoint; | |
6611 | b->cond = 0; | |
6612 | b->thread = -1; | |
6613 | return b; | |
6614 | } | |
6615 | ||
6616 | #if 0 | |
6617 | /* These aren't used; I don't know what they were for. */ | |
6618 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
6619 | static void | |
6620 | disable_catch (args) | |
6621 | char *args; | |
6622 | { | |
6623 | /* Map the disable command to catch clauses described in ARGS. */ | |
6624 | } | |
6625 | ||
6626 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
6627 | static void | |
6628 | enable_catch (args) | |
6629 | char *args; | |
6630 | { | |
6631 | /* Map the disable command to catch clauses described in ARGS. */ | |
6632 | } | |
6633 | ||
6634 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
6635 | static void | |
6636 | delete_catch (args) | |
6637 | char *args; | |
6638 | { | |
6639 | /* Map the delete command to catch clauses described in ARGS. */ | |
6640 | } | |
6641 | #endif /* 0 */ | |
6642 | ||
6643 | static void | |
6644 | catch_command (arg, from_tty) | |
6645 | char *arg; | |
6646 | int from_tty; | |
6647 | { | |
6648 | catch_command_1 (arg, 0, from_tty); | |
6649 | } | |
6650 | \f | |
6651 | ||
6652 | static void | |
6653 | tcatch_command (arg, from_tty) | |
6654 | char *arg; | |
6655 | int from_tty; | |
6656 | { | |
6657 | catch_command_1 (arg, 1, from_tty); | |
6658 | } | |
6659 | ||
6660 | ||
6661 | static void | |
6662 | clear_command (arg, from_tty) | |
6663 | char *arg; | |
6664 | int from_tty; | |
6665 | { | |
6666 | register struct breakpoint *b, *b1; | |
6667 | int default_match; | |
6668 | struct symtabs_and_lines sals; | |
6669 | struct symtab_and_line sal; | |
6670 | register struct breakpoint *found; | |
6671 | int i; | |
6672 | ||
6673 | if (arg) | |
6674 | { | |
6675 | sals = decode_line_spec (arg, 1); | |
6676 | default_match = 0; | |
6677 | } | |
6678 | else | |
6679 | { | |
c5aa993b | 6680 | sals.sals = (struct symtab_and_line *) |
c906108c | 6681 | xmalloc (sizeof (struct symtab_and_line)); |
c5aa993b | 6682 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6683 | sal.line = default_breakpoint_line; |
6684 | sal.symtab = default_breakpoint_symtab; | |
6685 | sal.pc = default_breakpoint_address; | |
6686 | if (sal.symtab == 0) | |
6687 | error ("No source file specified."); | |
6688 | ||
6689 | sals.sals[0] = sal; | |
6690 | sals.nelts = 1; | |
6691 | ||
6692 | default_match = 1; | |
6693 | } | |
6694 | ||
6695 | /* For each line spec given, delete bps which correspond | |
6696 | to it. We do this in two loops: the first loop looks at | |
6697 | the initial bp(s) in the chain which should be deleted, | |
6698 | the second goes down the rest of the chain looking ahead | |
6699 | one so it can take those bps off the chain without messing | |
6700 | up the chain. */ | |
6701 | ||
6702 | ||
6703 | for (i = 0; i < sals.nelts; i++) | |
6704 | { | |
6705 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6706 | If line given (pc == 0), clear all bpts on specified line. |
6707 | If defaulting, clear all bpts on default line | |
c906108c | 6708 | or at default pc. |
c5aa993b JM |
6709 | |
6710 | defaulting sal.pc != 0 tests to do | |
6711 | ||
6712 | 0 1 pc | |
6713 | 1 1 pc _and_ line | |
6714 | 0 0 line | |
6715 | 1 0 <can't happen> */ | |
c906108c SS |
6716 | |
6717 | sal = sals.sals[i]; | |
6718 | found = (struct breakpoint *) 0; | |
6719 | ||
6720 | ||
6721 | while (breakpoint_chain | |
c5aa993b JM |
6722 | /* Why don't we check here that this is not |
6723 | a watchpoint, etc., as we do below? | |
6724 | I can't make it fail, but don't know | |
6725 | what's stopping the failure: a watchpoint | |
6726 | of the same address as "sal.pc" should | |
6727 | wind up being deleted. */ | |
6728 | ||
6729 | && (((sal.pc && (breakpoint_chain->address == sal.pc)) && | |
6730 | (overlay_debugging == 0 || | |
6731 | breakpoint_chain->section == sal.section)) | |
6732 | || ((default_match || (0 == sal.pc)) | |
6733 | && breakpoint_chain->source_file != NULL | |
6734 | && sal.symtab != NULL | |
6735 | && STREQ (breakpoint_chain->source_file, sal.symtab->filename) | |
6736 | && breakpoint_chain->line_number == sal.line))) | |
c906108c SS |
6737 | |
6738 | { | |
6739 | b1 = breakpoint_chain; | |
6740 | breakpoint_chain = b1->next; | |
6741 | b1->next = found; | |
6742 | found = b1; | |
6743 | } | |
6744 | ||
6745 | ALL_BREAKPOINTS (b) | |
6746 | ||
c5aa993b JM |
6747 | while (b->next |
6748 | && b->next->type != bp_none | |
6749 | && b->next->type != bp_watchpoint | |
6750 | && b->next->type != bp_hardware_watchpoint | |
6751 | && b->next->type != bp_read_watchpoint | |
6752 | && b->next->type != bp_access_watchpoint | |
6753 | && (((sal.pc && (b->next->address == sal.pc)) && | |
6754 | (overlay_debugging == 0 || | |
6755 | b->next->section == sal.section)) | |
6756 | || ((default_match || (0 == sal.pc)) | |
6757 | && b->next->source_file != NULL | |
6758 | && sal.symtab != NULL | |
6759 | && STREQ (b->next->source_file, sal.symtab->filename) | |
6760 | && b->next->line_number == sal.line))) | |
c906108c SS |
6761 | |
6762 | ||
c5aa993b JM |
6763 | { |
6764 | b1 = b->next; | |
6765 | b->next = b1->next; | |
6766 | b1->next = found; | |
6767 | found = b1; | |
6768 | } | |
c906108c SS |
6769 | |
6770 | if (found == 0) | |
6771 | { | |
6772 | if (arg) | |
6773 | error ("No breakpoint at %s.", arg); | |
6774 | else | |
6775 | error ("No breakpoint at this line."); | |
6776 | } | |
6777 | ||
c5aa993b JM |
6778 | if (found->next) |
6779 | from_tty = 1; /* Always report if deleted more than one */ | |
6780 | if (from_tty) | |
6781 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
c906108c SS |
6782 | breakpoints_changed (); |
6783 | while (found) | |
6784 | { | |
c5aa993b JM |
6785 | if (from_tty) |
6786 | printf_unfiltered ("%d ", found->number); | |
c906108c SS |
6787 | b1 = found->next; |
6788 | delete_breakpoint (found); | |
6789 | found = b1; | |
6790 | } | |
c5aa993b JM |
6791 | if (from_tty) |
6792 | putchar_unfiltered ('\n'); | |
c906108c | 6793 | } |
c5aa993b | 6794 | free ((PTR) sals.sals); |
c906108c SS |
6795 | } |
6796 | \f | |
6797 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6798 | all breakpoints that are marked for deletion, whether hit or not. | |
6799 | This is called after any breakpoint is hit, or after errors. */ | |
6800 | ||
6801 | void | |
6802 | breakpoint_auto_delete (bs) | |
6803 | bpstat bs; | |
6804 | { | |
6805 | struct breakpoint *b, *temp; | |
6806 | ||
6807 | for (; bs; bs = bs->next) | |
c5aa993b | 6808 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
c906108c SS |
6809 | && bs->stop) |
6810 | delete_breakpoint (bs->breakpoint_at); | |
6811 | ||
6812 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
6813 | { |
6814 | if (b->disposition == del_at_next_stop) | |
6815 | delete_breakpoint (b); | |
6816 | } | |
c906108c SS |
6817 | } |
6818 | ||
53a5351d JM |
6819 | /* Delete a breakpoint and clean up all traces of it in the data |
6820 | structures. */ | |
c906108c SS |
6821 | |
6822 | void | |
6823 | delete_breakpoint (bpt) | |
6824 | struct breakpoint *bpt; | |
6825 | { | |
6826 | register struct breakpoint *b; | |
6827 | register bpstat bs; | |
6828 | ||
6829 | if (bpt == NULL) | |
6830 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6831 | ||
6832 | ||
6833 | /* Has this bp already been deleted? This can happen because multiple | |
6834 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6835 | ||
6836 | One example of this happening is a watchpoint's scope bp. When the | |
6837 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6838 | delete it. We also delete its scope bp. But the scope bp is marked | |
6839 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6840 | checked for auto-deleting bp's, which are deleted. | |
6841 | ||
6842 | A real solution to this problem might involve reference counts in bp's, | |
6843 | and/or giving them pointers back to their referencing bpstat's, and | |
6844 | teaching delete_breakpoint to only free a bp's storage when no more | |
6845 | references were extent. A cheaper bandaid was chosen. */ | |
6846 | if (bpt->type == bp_none) | |
6847 | return; | |
6848 | ||
6849 | if (delete_breakpoint_hook) | |
6850 | delete_breakpoint_hook (bpt); | |
104c1213 | 6851 | breakpoint_delete_event (bpt->number); |
c906108c SS |
6852 | |
6853 | if (bpt->inserted) | |
6854 | remove_breakpoint (bpt, mark_uninserted); | |
c5aa993b | 6855 | |
c906108c SS |
6856 | if (breakpoint_chain == bpt) |
6857 | breakpoint_chain = bpt->next; | |
6858 | ||
6859 | /* If we have callback-style exception catchpoints, don't go through | |
6860 | the adjustments to the C++ runtime library etc. if the inferior | |
6861 | isn't actually running. target_enable_exception_callback for a | |
6862 | null target ops vector gives an undesirable error message, so we | |
6863 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6864 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6865 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6866 | { | |
6867 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
6868 | static char message[sizeof (message1) + 30]; | |
6869 | args_for_catchpoint_enable args; | |
6870 | ||
53a5351d JM |
6871 | /* Format possible error msg */ |
6872 | sprintf (message, message1, bpt->number); | |
6873 | args.kind = bpt->type == bp_catch_catch ? | |
6874 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
6875 | args.enable = 0; |
6876 | catch_errors (cover_target_enable_exception_callback, &args, | |
6877 | message, RETURN_MASK_ALL); | |
6878 | } | |
6879 | ||
6880 | ||
6881 | ALL_BREAKPOINTS (b) | |
6882 | if (b->next == bpt) | |
c5aa993b JM |
6883 | { |
6884 | b->next = bpt->next; | |
6885 | break; | |
6886 | } | |
c906108c SS |
6887 | |
6888 | /* Before turning off the visuals for the bp, check to see that | |
6889 | there are no other bps at the same address. */ | |
6890 | if (tui_version) | |
6891 | { | |
6892 | int clearIt; | |
6893 | ||
6894 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
6895 | { |
6896 | clearIt = (b->address != bpt->address); | |
6897 | if (!clearIt) | |
6898 | break; | |
6899 | } | |
c906108c SS |
6900 | |
6901 | if (clearIt) | |
c5aa993b JM |
6902 | { |
6903 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, bpt, 0)); | |
6904 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
6905 | } | |
c906108c SS |
6906 | } |
6907 | ||
6908 | check_duplicates (bpt->address, bpt->section); | |
6909 | /* If this breakpoint was inserted, and there is another breakpoint | |
6910 | at the same address, we need to insert the other breakpoint. */ | |
6911 | if (bpt->inserted | |
6912 | && bpt->type != bp_hardware_watchpoint | |
6913 | && bpt->type != bp_read_watchpoint | |
6914 | && bpt->type != bp_access_watchpoint | |
6915 | && bpt->type != bp_catch_fork | |
6916 | && bpt->type != bp_catch_vfork | |
6917 | && bpt->type != bp_catch_exec) | |
6918 | { | |
6919 | ALL_BREAKPOINTS (b) | |
6920 | if (b->address == bpt->address | |
6921 | && b->section == bpt->section | |
6922 | && !b->duplicate | |
6923 | && b->enable != disabled | |
6924 | && b->enable != shlib_disabled | |
6925 | && b->enable != call_disabled) | |
c5aa993b JM |
6926 | { |
6927 | int val; | |
53a5351d | 6928 | |
c2c6d25f JM |
6929 | /* We should never reach this point if there is a permanent |
6930 | breakpoint at the same address as the one being deleted. | |
6931 | If there is a permanent breakpoint somewhere, it should | |
6932 | always be the only one inserted. */ | |
6933 | if (b->enable == permanent) | |
6934 | internal_error ("another breakpoint was inserted on top of " | |
6935 | "a permanent breakpoint"); | |
6936 | ||
53a5351d JM |
6937 | if (b->type == bp_hardware_breakpoint) |
6938 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
6939 | else | |
6940 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
6941 | ||
c5aa993b JM |
6942 | if (val != 0) |
6943 | { | |
6944 | target_terminal_ours_for_output (); | |
53a5351d | 6945 | warning ("Cannot insert breakpoint %d:", b->number); |
c5aa993b JM |
6946 | memory_error (val, b->address); /* which bombs us out */ |
6947 | } | |
6948 | else | |
6949 | b->inserted = 1; | |
6950 | } | |
c906108c SS |
6951 | } |
6952 | ||
6953 | free_command_lines (&bpt->commands); | |
6954 | if (bpt->cond) | |
6955 | free (bpt->cond); | |
6956 | if (bpt->cond_string != NULL) | |
6957 | free (bpt->cond_string); | |
6958 | if (bpt->addr_string != NULL) | |
6959 | free (bpt->addr_string); | |
6960 | if (bpt->exp != NULL) | |
6961 | free (bpt->exp); | |
6962 | if (bpt->exp_string != NULL) | |
6963 | free (bpt->exp_string); | |
6964 | if (bpt->val != NULL) | |
6965 | value_free (bpt->val); | |
6966 | if (bpt->source_file != NULL) | |
6967 | free (bpt->source_file); | |
6968 | if (bpt->dll_pathname != NULL) | |
6969 | free (bpt->dll_pathname); | |
6970 | if (bpt->triggered_dll_pathname != NULL) | |
6971 | free (bpt->triggered_dll_pathname); | |
6972 | if (bpt->exec_pathname != NULL) | |
6973 | free (bpt->exec_pathname); | |
6974 | ||
6975 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6976 | /* FIXME, how can we find all bpstat's? | |
6977 | We just check stop_bpstat for now. */ | |
6978 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6979 | if (bs->breakpoint_at == bpt) | |
6980 | { | |
6981 | bs->breakpoint_at = NULL; | |
6982 | ||
6983 | /* we'd call bpstat_clear_actions, but that free's stuff and due | |
6984 | to the multiple pointers pointing to one item with no | |
6985 | reference counts found anywhere through out the bpstat's (how | |
6986 | do you spell fragile?), we don't want to free things twice -- | |
6987 | better a memory leak than a corrupt malloc pool! */ | |
6988 | bs->commands = NULL; | |
6989 | bs->old_val = NULL; | |
6990 | } | |
6991 | /* On the chance that someone will soon try again to delete this same | |
6992 | bp, we mark it as deleted before freeing its storage. */ | |
6993 | bpt->type = bp_none; | |
6994 | ||
c5aa993b | 6995 | free ((PTR) bpt); |
c906108c SS |
6996 | } |
6997 | ||
6998 | void | |
6999 | delete_command (arg, from_tty) | |
7000 | char *arg; | |
7001 | int from_tty; | |
7002 | { | |
7003 | struct breakpoint *b, *temp; | |
7004 | ||
7005 | if (arg == 0) | |
7006 | { | |
7007 | int breaks_to_delete = 0; | |
7008 | ||
7009 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7010 | Do not delete internal or call-dummy breakpoints, these |
7011 | have to be deleted with an explicit breakpoint number argument. */ | |
7012 | ALL_BREAKPOINTS (b) | |
7013 | { | |
7014 | if (b->type != bp_call_dummy && | |
7015 | b->type != bp_shlib_event && | |
c4093a6a | 7016 | b->type != bp_thread_event && |
c5aa993b JM |
7017 | b->number >= 0) |
7018 | breaks_to_delete = 1; | |
7019 | } | |
c906108c SS |
7020 | |
7021 | /* Ask user only if there are some breakpoints to delete. */ | |
7022 | if (!from_tty | |
7023 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
7024 | { | |
c5aa993b JM |
7025 | ALL_BREAKPOINTS_SAFE (b, temp) |
7026 | { | |
7027 | if (b->type != bp_call_dummy && | |
7028 | b->type != bp_shlib_event && | |
c4093a6a | 7029 | b->type != bp_thread_event && |
c5aa993b JM |
7030 | b->number >= 0) |
7031 | delete_breakpoint (b); | |
7032 | } | |
c906108c SS |
7033 | } |
7034 | } | |
7035 | else | |
7036 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7037 | } | |
7038 | ||
7039 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
7040 | The value we return ends up being the return value from catch_errors. | |
7041 | Unused in this case. */ | |
7042 | ||
7043 | static int | |
7044 | breakpoint_re_set_one (bint) | |
7045 | PTR bint; | |
7046 | { | |
53a5351d JM |
7047 | /* get past catch_errs */ |
7048 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7049 | struct value *mark; |
7050 | int i; | |
7051 | struct symtabs_and_lines sals; | |
7052 | char *s; | |
7053 | enum enable save_enable; | |
7054 | ||
7055 | switch (b->type) | |
7056 | { | |
7057 | case bp_none: | |
53a5351d JM |
7058 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
7059 | b->number); | |
c906108c SS |
7060 | return 0; |
7061 | case bp_breakpoint: | |
7062 | case bp_hardware_breakpoint: | |
7063 | case bp_catch_load: | |
7064 | case bp_catch_unload: | |
7065 | if (b->addr_string == NULL) | |
7066 | { | |
7067 | /* Anything without a string can't be re-set. */ | |
7068 | delete_breakpoint (b); | |
7069 | return 0; | |
7070 | } | |
7071 | /* In case we have a problem, disable this breakpoint. We'll restore | |
c5aa993b | 7072 | its status if we succeed. */ |
c906108c SS |
7073 | save_enable = b->enable; |
7074 | b->enable = disabled; | |
7075 | ||
7076 | set_language (b->language); | |
7077 | input_radix = b->input_radix; | |
7078 | s = b->addr_string; | |
c5aa993b | 7079 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7080 | for (i = 0; i < sals.nelts; i++) |
7081 | { | |
7082 | resolve_sal_pc (&sals.sals[i]); | |
7083 | ||
7084 | /* Reparse conditions, they might contain references to the | |
7085 | old symtab. */ | |
7086 | if (b->cond_string != NULL) | |
7087 | { | |
7088 | s = b->cond_string; | |
7089 | if (b->cond) | |
c5aa993b | 7090 | free ((PTR) b->cond); |
c906108c SS |
7091 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7092 | } | |
7093 | ||
c5aa993b | 7094 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 7095 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
7096 | /* ...or new and old breakpoints both have source files, and |
7097 | the source file name or the line number changes... */ | |
c906108c SS |
7098 | || (b->source_file != NULL |
7099 | && sals.sals[i].symtab != NULL | |
7100 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
7101 | || b->line_number != sals.sals[i].line) | |
c906108c | 7102 | ) |
c5aa993b JM |
7103 | /* ...or we switch between having a source file and not having |
7104 | one. */ | |
7105 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7106 | ) | |
c906108c SS |
7107 | { |
7108 | if (b->source_file != NULL) | |
7109 | free (b->source_file); | |
7110 | if (sals.sals[i].symtab == NULL) | |
7111 | b->source_file = NULL; | |
7112 | else | |
7113 | b->source_file = | |
7114 | savestring (sals.sals[i].symtab->filename, | |
7115 | strlen (sals.sals[i].symtab->filename)); | |
7116 | b->line_number = sals.sals[i].line; | |
7117 | b->address = sals.sals[i].pc; | |
7118 | ||
c5aa993b JM |
7119 | /* Used to check for duplicates here, but that can |
7120 | cause trouble, as it doesn't check for disable | |
7121 | breakpoints. */ | |
c906108c SS |
7122 | |
7123 | mention (b); | |
7124 | ||
7125 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7126 | rather than once for every breakpoint. */ |
c906108c SS |
7127 | breakpoints_changed (); |
7128 | } | |
7129 | b->section = sals.sals[i].section; | |
7130 | b->enable = save_enable; /* Restore it, this worked. */ | |
7131 | ||
7132 | ||
c5aa993b | 7133 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7134 | can be used. */ |
c5aa993b | 7135 | check_duplicates (b->address, b->section); |
c906108c SS |
7136 | |
7137 | } | |
c5aa993b | 7138 | free ((PTR) sals.sals); |
c906108c SS |
7139 | break; |
7140 | ||
7141 | case bp_watchpoint: | |
7142 | case bp_hardware_watchpoint: | |
7143 | case bp_read_watchpoint: | |
7144 | case bp_access_watchpoint: | |
7145 | innermost_block = NULL; | |
53a5351d JM |
7146 | /* The issue arises of what context to evaluate this in. The |
7147 | same one as when it was set, but what does that mean when | |
7148 | symbols have been re-read? We could save the filename and | |
7149 | functionname, but if the context is more local than that, the | |
7150 | best we could do would be something like how many levels deep | |
7151 | and which index at that particular level, but that's going to | |
7152 | be less stable than filenames or function names. */ | |
7153 | ||
c906108c SS |
7154 | /* So for now, just use a global context. */ |
7155 | if (b->exp) | |
c5aa993b | 7156 | free ((PTR) b->exp); |
c906108c SS |
7157 | b->exp = parse_expression (b->exp_string); |
7158 | b->exp_valid_block = innermost_block; | |
7159 | mark = value_mark (); | |
7160 | if (b->val) | |
7161 | value_free (b->val); | |
7162 | b->val = evaluate_expression (b->exp); | |
7163 | release_value (b->val); | |
7164 | if (VALUE_LAZY (b->val)) | |
7165 | value_fetch_lazy (b->val); | |
7166 | ||
7167 | if (b->cond_string != NULL) | |
7168 | { | |
7169 | s = b->cond_string; | |
7170 | if (b->cond) | |
c5aa993b JM |
7171 | free ((PTR) b->cond); |
7172 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); | |
c906108c SS |
7173 | } |
7174 | if (b->enable == enabled) | |
7175 | mention (b); | |
7176 | value_free_to_mark (mark); | |
7177 | break; | |
c5aa993b JM |
7178 | case bp_catch_catch: |
7179 | case bp_catch_throw: | |
c906108c | 7180 | break; |
c5aa993b JM |
7181 | /* We needn't really do anything to reset these, since the mask |
7182 | that requests them is unaffected by e.g., new libraries being | |
7183 | loaded. */ | |
c906108c SS |
7184 | case bp_catch_fork: |
7185 | case bp_catch_vfork: | |
7186 | case bp_catch_exec: | |
7187 | break; | |
c5aa993b | 7188 | |
c906108c SS |
7189 | default: |
7190 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7191 | /* fall through */ | |
c5aa993b JM |
7192 | /* Delete longjmp breakpoints, they will be reset later by |
7193 | breakpoint_re_set. */ | |
c906108c SS |
7194 | case bp_longjmp: |
7195 | case bp_longjmp_resume: | |
7196 | delete_breakpoint (b); | |
7197 | break; | |
7198 | ||
c5aa993b JM |
7199 | /* This breakpoint is special, it's set up when the inferior |
7200 | starts and we really don't want to touch it. */ | |
c906108c SS |
7201 | case bp_shlib_event: |
7202 | ||
c4093a6a JM |
7203 | /* Like bp_shlib_event, this breakpoint type is special. |
7204 | Once it is set up, we do not want to touch it. */ | |
7205 | case bp_thread_event: | |
7206 | ||
c5aa993b JM |
7207 | /* Keep temporary breakpoints, which can be encountered when we step |
7208 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7209 | Otherwise these should have been blown away via the cleanup chain | |
7210 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7211 | case bp_until: |
7212 | case bp_finish: | |
7213 | case bp_watchpoint_scope: | |
7214 | case bp_call_dummy: | |
7215 | case bp_step_resume: | |
7216 | break; | |
7217 | } | |
7218 | ||
7219 | return 0; | |
7220 | } | |
7221 | ||
7222 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7223 | void | |
7224 | breakpoint_re_set () | |
7225 | { | |
7226 | struct breakpoint *b, *temp; | |
7227 | enum language save_language; | |
7228 | int save_input_radix; | |
7229 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
7230 | char message[sizeof (message1) + 30 /* slop */ ]; |
7231 | ||
c906108c SS |
7232 | save_language = current_language->la_language; |
7233 | save_input_radix = input_radix; | |
7234 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7235 | { |
53a5351d JM |
7236 | /* Format possible error msg */ |
7237 | sprintf (message, message1, b->number); | |
c5aa993b JM |
7238 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
7239 | } | |
c906108c SS |
7240 | set_language (save_language); |
7241 | input_radix = save_input_radix; | |
7242 | ||
7243 | #ifdef GET_LONGJMP_TARGET | |
7244 | create_longjmp_breakpoint ("longjmp"); | |
7245 | create_longjmp_breakpoint ("_longjmp"); | |
7246 | create_longjmp_breakpoint ("siglongjmp"); | |
7247 | create_longjmp_breakpoint ("_siglongjmp"); | |
7248 | create_longjmp_breakpoint (NULL); | |
7249 | #endif | |
7250 | ||
7251 | #if 0 | |
7252 | /* Took this out (temporarily at least), since it produces an extra | |
7253 | blank line at startup. This messes up the gdbtests. -PB */ | |
7254 | /* Blank line to finish off all those mention() messages we just printed. */ | |
7255 | printf_filtered ("\n"); | |
7256 | #endif | |
7257 | } | |
7258 | \f | |
7259 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
7260 | If from_tty is nonzero, it prints a message to that effect, | |
7261 | which ends with a period (no newline). */ | |
7262 | ||
7263 | /* Reset the thread number of this breakpoint: | |
7264 | ||
7265 | - If the breakpoint is for all threads, leave it as-is. | |
7266 | - Else, reset it to the current thread for inferior_pid. */ | |
7267 | void | |
7268 | breakpoint_re_set_thread (b) | |
c5aa993b | 7269 | struct breakpoint *b; |
c906108c SS |
7270 | { |
7271 | if (b->thread != -1) | |
7272 | { | |
7273 | if (in_thread_list (inferior_pid)) | |
c5aa993b | 7274 | b->thread = pid_to_thread_id (inferior_pid); |
c906108c SS |
7275 | } |
7276 | } | |
7277 | ||
7278 | void | |
7279 | set_ignore_count (bptnum, count, from_tty) | |
7280 | int bptnum, count, from_tty; | |
7281 | { | |
7282 | register struct breakpoint *b; | |
7283 | ||
7284 | if (count < 0) | |
7285 | count = 0; | |
7286 | ||
7287 | ALL_BREAKPOINTS (b) | |
7288 | if (b->number == bptnum) | |
c5aa993b JM |
7289 | { |
7290 | b->ignore_count = count; | |
7291 | if (!from_tty) | |
c906108c | 7292 | return; |
c5aa993b JM |
7293 | else if (count == 0) |
7294 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7295 | bptnum); | |
7296 | else if (count == 1) | |
7297 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7298 | bptnum); | |
7299 | else | |
7300 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7301 | count, bptnum); | |
7302 | breakpoints_changed (); | |
7303 | return; | |
7304 | } | |
c906108c SS |
7305 | |
7306 | error ("No breakpoint number %d.", bptnum); | |
7307 | } | |
7308 | ||
7309 | /* Clear the ignore counts of all breakpoints. */ | |
7310 | void | |
7311 | breakpoint_clear_ignore_counts () | |
7312 | { | |
7313 | struct breakpoint *b; | |
7314 | ||
7315 | ALL_BREAKPOINTS (b) | |
7316 | b->ignore_count = 0; | |
7317 | } | |
7318 | ||
7319 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7320 | ||
7321 | static void | |
7322 | ignore_command (args, from_tty) | |
7323 | char *args; | |
7324 | int from_tty; | |
7325 | { | |
7326 | char *p = args; | |
7327 | register int num; | |
7328 | ||
7329 | if (p == 0) | |
7330 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7331 | |
c906108c | 7332 | num = get_number (&p); |
5c44784c JM |
7333 | if (num == 0) |
7334 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7335 | if (*p == 0) |
7336 | error ("Second argument (specified ignore-count) is missing."); | |
7337 | ||
7338 | set_ignore_count (num, | |
7339 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7340 | from_tty); | |
7341 | printf_filtered ("\n"); | |
7342 | breakpoints_changed (); | |
7343 | } | |
7344 | \f | |
7345 | /* Call FUNCTION on each of the breakpoints | |
7346 | whose numbers are given in ARGS. */ | |
7347 | ||
7348 | static void | |
7349 | map_breakpoint_numbers (args, function) | |
7350 | char *args; | |
7351 | void (*function) PARAMS ((struct breakpoint *)); | |
7352 | { | |
7353 | register char *p = args; | |
7354 | char *p1; | |
7355 | register int num; | |
5c44784c | 7356 | register struct breakpoint *b, *tmp; |
11cf8741 | 7357 | int match; |
c906108c SS |
7358 | |
7359 | if (p == 0) | |
7360 | error_no_arg ("one or more breakpoint numbers"); | |
7361 | ||
7362 | while (*p) | |
7363 | { | |
11cf8741 | 7364 | match = 0; |
c906108c | 7365 | p1 = p; |
c5aa993b | 7366 | |
5c44784c JM |
7367 | num = get_number_or_range (&p1); |
7368 | if (num == 0) | |
c5aa993b | 7369 | { |
5c44784c JM |
7370 | warning ("bad breakpoint number at or near '%s'", p); |
7371 | } | |
7372 | else | |
7373 | { | |
7374 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7375 | if (b->number == num) | |
7376 | { | |
7377 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7378 | match = 1; |
5c44784c JM |
7379 | function (b); |
7380 | if (related_breakpoint) | |
7381 | function (related_breakpoint); | |
11cf8741 | 7382 | break; |
5c44784c | 7383 | } |
11cf8741 JM |
7384 | if (match == 0) |
7385 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7386 | } |
c906108c SS |
7387 | p = p1; |
7388 | } | |
7389 | } | |
7390 | ||
7391 | void | |
7392 | disable_breakpoint (bpt) | |
7393 | struct breakpoint *bpt; | |
7394 | { | |
7395 | /* Never disable a watchpoint scope breakpoint; we want to | |
7396 | hit them when we leave scope so we can delete both the | |
7397 | watchpoint and its scope breakpoint at that time. */ | |
7398 | if (bpt->type == bp_watchpoint_scope) | |
7399 | return; | |
7400 | ||
c2c6d25f JM |
7401 | /* You can't disable permanent breakpoints. */ |
7402 | if (bpt->enable == permanent) | |
7403 | return; | |
7404 | ||
c906108c SS |
7405 | bpt->enable = disabled; |
7406 | ||
7407 | check_duplicates (bpt->address, bpt->section); | |
7408 | ||
7409 | if (modify_breakpoint_hook) | |
7410 | modify_breakpoint_hook (bpt); | |
104c1213 | 7411 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7412 | } |
7413 | ||
7414 | /* ARGSUSED */ | |
7415 | static void | |
7416 | disable_command (args, from_tty) | |
7417 | char *args; | |
7418 | int from_tty; | |
7419 | { | |
7420 | register struct breakpoint *bpt; | |
7421 | if (args == 0) | |
7422 | ALL_BREAKPOINTS (bpt) | |
7423 | switch (bpt->type) | |
c5aa993b JM |
7424 | { |
7425 | case bp_none: | |
53a5351d JM |
7426 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7427 | bpt->number); | |
c5aa993b JM |
7428 | continue; |
7429 | case bp_breakpoint: | |
7430 | case bp_catch_load: | |
7431 | case bp_catch_unload: | |
7432 | case bp_catch_fork: | |
7433 | case bp_catch_vfork: | |
7434 | case bp_catch_exec: | |
7435 | case bp_catch_catch: | |
7436 | case bp_catch_throw: | |
7437 | case bp_hardware_breakpoint: | |
7438 | case bp_watchpoint: | |
7439 | case bp_hardware_watchpoint: | |
7440 | case bp_read_watchpoint: | |
7441 | case bp_access_watchpoint: | |
7442 | disable_breakpoint (bpt); | |
7443 | default: | |
7444 | continue; | |
7445 | } | |
c906108c SS |
7446 | else |
7447 | map_breakpoint_numbers (args, disable_breakpoint); | |
7448 | } | |
7449 | ||
7450 | static void | |
7451 | do_enable_breakpoint (bpt, disposition) | |
7452 | struct breakpoint *bpt; | |
7453 | enum bpdisp disposition; | |
7454 | { | |
7455 | struct frame_info *save_selected_frame = NULL; | |
7456 | int save_selected_frame_level = -1; | |
7457 | int target_resources_ok, other_type_used; | |
7458 | struct value *mark; | |
7459 | ||
7460 | if (bpt->type == bp_hardware_breakpoint) | |
7461 | { | |
7462 | int i; | |
c5aa993b | 7463 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7464 | target_resources_ok = |
7465 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7466 | i + 1, 0); | |
c906108c | 7467 | if (target_resources_ok == 0) |
c5aa993b | 7468 | error ("No hardware breakpoint support in the target."); |
c906108c | 7469 | else if (target_resources_ok < 0) |
c5aa993b | 7470 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7471 | } |
7472 | ||
c2c6d25f JM |
7473 | if (bpt->enable != permanent) |
7474 | bpt->enable = enabled; | |
c906108c SS |
7475 | bpt->disposition = disposition; |
7476 | check_duplicates (bpt->address, bpt->section); | |
7477 | breakpoints_changed (); | |
7478 | ||
53a5351d JM |
7479 | if (bpt->type == bp_watchpoint || |
7480 | bpt->type == bp_hardware_watchpoint || | |
7481 | bpt->type == bp_read_watchpoint || | |
7482 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7483 | { |
7484 | if (bpt->exp_valid_block != NULL) | |
7485 | { | |
7486 | struct frame_info *fr = | |
7487 | ||
c5aa993b JM |
7488 | /* Ensure that we have the current frame. Else, this |
7489 | next query may pessimistically be answered as, "No, | |
7490 | not within current scope". */ | |
7491 | get_current_frame (); | |
7492 | fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
c906108c SS |
7493 | if (fr == NULL) |
7494 | { | |
7495 | printf_filtered ("\ | |
7496 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7497 | is valid is not currently in scope.\n", bpt->number); | |
7498 | bpt->enable = disabled; | |
7499 | return; | |
7500 | } | |
7501 | ||
7502 | save_selected_frame = selected_frame; | |
7503 | save_selected_frame_level = selected_frame_level; | |
7504 | select_frame (fr, -1); | |
7505 | } | |
7506 | ||
7507 | value_free (bpt->val); | |
7508 | mark = value_mark (); | |
7509 | bpt->val = evaluate_expression (bpt->exp); | |
7510 | release_value (bpt->val); | |
7511 | if (VALUE_LAZY (bpt->val)) | |
7512 | value_fetch_lazy (bpt->val); | |
7513 | ||
7514 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7515 | bpt->type == bp_read_watchpoint || |
7516 | bpt->type == bp_access_watchpoint) | |
7517 | { | |
7518 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7519 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7520 | ||
7521 | /* Hack around 'unused var' error for some targets here */ | |
7522 | (void) mem_cnt, i; | |
7523 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7524 | bpt->type, i + mem_cnt, other_type_used); | |
7525 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7526 | bp_watchpoint in the following condition */ | |
7527 | if (target_resources_ok < 0) | |
7528 | { | |
7529 | printf_filtered ("\ | |
c906108c SS |
7530 | Cannot enable watchpoint %d because target watch resources\n\ |
7531 | have been allocated for other watchpoints.\n", bpt->number); | |
c5aa993b JM |
7532 | bpt->enable = disabled; |
7533 | value_free_to_mark (mark); | |
7534 | return; | |
7535 | } | |
7536 | } | |
c906108c SS |
7537 | |
7538 | if (save_selected_frame_level >= 0) | |
53a5351d JM |
7539 | select_and_print_frame (save_selected_frame, |
7540 | save_selected_frame_level); | |
c906108c SS |
7541 | value_free_to_mark (mark); |
7542 | } | |
7543 | if (modify_breakpoint_hook) | |
7544 | modify_breakpoint_hook (bpt); | |
104c1213 | 7545 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7546 | } |
7547 | ||
7548 | void | |
7549 | enable_breakpoint (bpt) | |
7550 | struct breakpoint *bpt; | |
7551 | { | |
7552 | do_enable_breakpoint (bpt, bpt->disposition); | |
7553 | } | |
7554 | ||
7555 | /* The enable command enables the specified breakpoints (or all defined | |
7556 | breakpoints) so they once again become (or continue to be) effective | |
7557 | in stopping the inferior. */ | |
7558 | ||
7559 | /* ARGSUSED */ | |
7560 | static void | |
7561 | enable_command (args, from_tty) | |
7562 | char *args; | |
7563 | int from_tty; | |
7564 | { | |
7565 | register struct breakpoint *bpt; | |
7566 | if (args == 0) | |
7567 | ALL_BREAKPOINTS (bpt) | |
7568 | switch (bpt->type) | |
c5aa993b JM |
7569 | { |
7570 | case bp_none: | |
53a5351d JM |
7571 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7572 | bpt->number); | |
c5aa993b JM |
7573 | continue; |
7574 | case bp_breakpoint: | |
7575 | case bp_catch_load: | |
7576 | case bp_catch_unload: | |
7577 | case bp_catch_fork: | |
7578 | case bp_catch_vfork: | |
7579 | case bp_catch_exec: | |
7580 | case bp_catch_catch: | |
7581 | case bp_catch_throw: | |
7582 | case bp_hardware_breakpoint: | |
7583 | case bp_watchpoint: | |
7584 | case bp_hardware_watchpoint: | |
7585 | case bp_read_watchpoint: | |
7586 | case bp_access_watchpoint: | |
7587 | enable_breakpoint (bpt); | |
7588 | default: | |
7589 | continue; | |
7590 | } | |
c906108c SS |
7591 | else |
7592 | map_breakpoint_numbers (args, enable_breakpoint); | |
7593 | } | |
7594 | ||
7595 | static void | |
7596 | enable_once_breakpoint (bpt) | |
7597 | struct breakpoint *bpt; | |
7598 | { | |
7599 | do_enable_breakpoint (bpt, disable); | |
7600 | } | |
7601 | ||
7602 | /* ARGSUSED */ | |
7603 | static void | |
7604 | enable_once_command (args, from_tty) | |
7605 | char *args; | |
7606 | int from_tty; | |
7607 | { | |
7608 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7609 | } | |
7610 | ||
7611 | static void | |
7612 | enable_delete_breakpoint (bpt) | |
7613 | struct breakpoint *bpt; | |
7614 | { | |
7615 | do_enable_breakpoint (bpt, del); | |
7616 | } | |
7617 | ||
7618 | /* ARGSUSED */ | |
7619 | static void | |
7620 | enable_delete_command (args, from_tty) | |
7621 | char *args; | |
7622 | int from_tty; | |
7623 | { | |
7624 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7625 | } | |
7626 | \f | |
7627 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7628 | ||
7629 | struct symtabs_and_lines | |
7630 | decode_line_spec_1 (string, funfirstline) | |
7631 | char *string; | |
7632 | int funfirstline; | |
7633 | { | |
7634 | struct symtabs_and_lines sals; | |
7635 | if (string == 0) | |
7636 | error ("Empty line specification."); | |
7637 | if (default_breakpoint_valid) | |
7638 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7639 | default_breakpoint_symtab, |
7640 | default_breakpoint_line, | |
c5aa993b | 7641 | (char ***) NULL); |
c906108c SS |
7642 | else |
7643 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 7644 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7645 | if (*string) |
7646 | error ("Junk at end of line specification: %s", string); | |
7647 | return sals; | |
7648 | } | |
7649 | \f | |
7650 | void | |
7651 | _initialize_breakpoint () | |
7652 | { | |
7653 | struct cmd_list_element *c; | |
7654 | ||
7655 | breakpoint_chain = 0; | |
7656 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7657 | before a breakpoint is set. */ | |
7658 | breakpoint_count = 0; | |
7659 | ||
7660 | add_com ("ignore", class_breakpoint, ignore_command, | |
7661 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7662 | Usage is `ignore N COUNT'."); | |
7663 | if (xdb_commands) | |
c5aa993b | 7664 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7665 | |
7666 | add_com ("commands", class_breakpoint, commands_command, | |
7667 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7668 | Give breakpoint number as argument after \"commands\".\n\ | |
7669 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7670 | The commands themselves follow starting on the next line.\n\ | |
7671 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7672 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7673 | then no output is printed when it is hit, except what the commands print."); | |
7674 | ||
7675 | add_com ("condition", class_breakpoint, condition_command, | |
7676 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7677 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
7678 | expression to be evaluated whenever breakpoint N is reached. "); | |
7679 | ||
7680 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
7681 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
7682 | Like \"break\" except the breakpoint is only temporary,\n\ | |
7683 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7684 | by using \"enable delete\" on the breakpoint number."); | |
c5aa993b JM |
7685 | add_com ("txbreak", class_breakpoint, tbreak_at_finish_command, |
7686 | "Set temporary breakpoint at procedure exit. Either there should\n\ | |
c906108c SS |
7687 | be no argument or the argument must be a depth.\n"); |
7688 | ||
7689 | add_com ("hbreak", class_breakpoint, hbreak_command, | |
7690 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7691 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
7692 | some target hardware may not have this support."); | |
7693 | ||
7694 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
7695 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7696 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
7697 | so it will be deleted when hit."); | |
7698 | ||
7699 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7700 | "Enable some breakpoints.\n\ | |
7701 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7702 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7703 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7704 | With a subcommand you can enable temporarily.", | |
7705 | &enablelist, "enable ", 1, &cmdlist); | |
7706 | if (xdb_commands) | |
c5aa993b JM |
7707 | add_com ("ab", class_breakpoint, enable_command, |
7708 | "Enable some breakpoints.\n\ | |
c906108c SS |
7709 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7710 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7711 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7712 | With a subcommand you can enable temporarily."); | |
7713 | ||
7714 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7715 | ||
7716 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7717 | "Enable some breakpoints.\n\ |
c906108c SS |
7718 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7719 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7720 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7721 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7722 | |
7723 | add_cmd ("once", no_class, enable_once_command, | |
7724 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7725 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7726 | &enablebreaklist); | |
7727 | ||
7728 | add_cmd ("delete", no_class, enable_delete_command, | |
7729 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7730 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7731 | &enablebreaklist); | |
7732 | ||
7733 | add_cmd ("delete", no_class, enable_delete_command, | |
7734 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7735 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7736 | &enablelist); | |
7737 | ||
7738 | add_cmd ("once", no_class, enable_once_command, | |
7739 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7740 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7741 | &enablelist); | |
7742 | ||
7743 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7744 | "Disable some breakpoints.\n\ |
c906108c SS |
7745 | Arguments are breakpoint numbers with spaces in between.\n\ |
7746 | To disable all breakpoints, give no argument.\n\ | |
7747 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7748 | &disablelist, "disable ", 1, &cmdlist); | |
7749 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7750 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7751 | if (xdb_commands) | |
c5aa993b JM |
7752 | add_com ("sb", class_breakpoint, disable_command, |
7753 | "Disable some breakpoints.\n\ | |
c906108c SS |
7754 | Arguments are breakpoint numbers with spaces in between.\n\ |
7755 | To disable all breakpoints, give no argument.\n\ | |
7756 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7757 | ||
7758 | add_cmd ("breakpoints", class_alias, disable_command, | |
7759 | "Disable some breakpoints.\n\ | |
7760 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7761 | To disable all breakpoints, give no argument.\n\ | |
7762 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7763 | This command may be abbreviated \"disable\".", | |
7764 | &disablelist); | |
7765 | ||
7766 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7767 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7768 | Arguments are breakpoint numbers with spaces in between.\n\ |
7769 | To delete all breakpoints, give no argument.\n\ | |
7770 | \n\ | |
7771 | Also a prefix command for deletion of other GDB objects.\n\ | |
7772 | The \"unset\" command is also an alias for \"delete\".", | |
7773 | &deletelist, "delete ", 1, &cmdlist); | |
7774 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7775 | if (xdb_commands) | |
7776 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7777 | "Delete some breakpoints.\n\ |
c906108c SS |
7778 | Arguments are breakpoint numbers with spaces in between.\n\ |
7779 | To delete all breakpoints, give no argument.\n"); | |
7780 | ||
7781 | add_cmd ("breakpoints", class_alias, delete_command, | |
7782 | "Delete some breakpoints or auto-display expressions.\n\ | |
7783 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7784 | To delete all breakpoints, give no argument.\n\ | |
7785 | This command may be abbreviated \"delete\".", | |
7786 | &deletelist); | |
7787 | ||
7788 | add_com ("clear", class_breakpoint, clear_command, | |
7789 | concat ("Clear breakpoint at specified line or function.\n\ | |
7790 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7791 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7792 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7793 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7794 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7795 | is executing in.\n\ |
7796 | \n\ | |
7797 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7798 | ||
7799 | add_com ("break", class_breakpoint, break_command, | |
7800 | concat ("Set breakpoint at specified line or function.\n\ | |
7801 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7802 | If line number is specified, break at start of code for that line.\n\ | |
7803 | If function is specified, break at start of code for that function.\n\ | |
7804 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7805 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7806 | This is useful for breaking on return to a stack frame.\n\ |
7807 | \n\ | |
7808 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7809 | \n\ | |
7810 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7811 | add_com_alias ("b", "break", class_run, 1); | |
7812 | add_com_alias ("br", "break", class_run, 1); | |
7813 | add_com_alias ("bre", "break", class_run, 1); | |
7814 | add_com_alias ("brea", "break", class_run, 1); | |
7815 | ||
c5aa993b JM |
7816 | add_com ("xbreak", class_breakpoint, break_at_finish_command, |
7817 | concat ("Set breakpoint at procedure exit. \n\ | |
c906108c SS |
7818 | Argument may be function name, or \"*\" and an address.\n\ |
7819 | If function is specified, break at end of code for that function.\n\ | |
7820 | If an address is specified, break at the end of the function that contains \n\ | |
7821 | that exact address.\n", | |
c5aa993b | 7822 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7823 | This is useful for breaking on return to a stack frame.\n\ |
7824 | \n\ | |
7825 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7826 | \n\ | |
7827 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7828 | add_com_alias ("xb", "xbreak", class_breakpoint, 1); | |
7829 | add_com_alias ("xbr", "xbreak", class_breakpoint, 1); | |
7830 | add_com_alias ("xbre", "xbreak", class_breakpoint, 1); | |
7831 | add_com_alias ("xbrea", "xbreak", class_breakpoint, 1); | |
7832 | ||
7833 | if (xdb_commands) | |
7834 | { | |
7835 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7836 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
7837 | add_com ("bx", class_breakpoint, break_at_finish_at_depth_command, | |
c5aa993b | 7838 | "Set breakpoint at procedure exit. Either there should\n\ |
c906108c SS |
7839 | be no argument or the argument must be a depth.\n"); |
7840 | } | |
7841 | ||
7842 | if (dbx_commands) | |
7843 | { | |
c5aa993b JM |
7844 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7845 | "Break in function/address or break at a line in the current file.", | |
7846 | &stoplist, "stop ", 1, &cmdlist); | |
7847 | add_cmd ("in", class_breakpoint, stopin_command, | |
7848 | "Break in function or address.\n", &stoplist); | |
7849 | add_cmd ("at", class_breakpoint, stopat_command, | |
7850 | "Break at a line in the current file.\n", &stoplist); | |
7851 | add_com ("status", class_info, breakpoints_info, | |
7852 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7853 | The \"Type\" column indicates one of:\n\ |
7854 | \tbreakpoint - normal breakpoint\n\ | |
7855 | \twatchpoint - watchpoint\n\ | |
7856 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7857 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7858 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7859 | address and file/line number respectively.\n\n", | |
c5aa993b | 7860 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7861 | are set to the address of the last breakpoint listed.\n\n\ |
7862 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7863 | breakpoint set.", NULL)); | |
7864 | } | |
7865 | ||
7866 | add_info ("breakpoints", breakpoints_info, | |
7867 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7868 | The \"Type\" column indicates one of:\n\ | |
7869 | \tbreakpoint - normal breakpoint\n\ | |
7870 | \twatchpoint - watchpoint\n\ | |
7871 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7872 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7873 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7874 | address and file/line number respectively.\n\n", | |
c5aa993b | 7875 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7876 | are set to the address of the last breakpoint listed.\n\n\ |
7877 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7878 | breakpoint set.", NULL)); | |
7879 | ||
7880 | if (xdb_commands) | |
c5aa993b JM |
7881 | add_com ("lb", class_breakpoint, breakpoints_info, |
7882 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7883 | The \"Type\" column indicates one of:\n\ |
7884 | \tbreakpoint - normal breakpoint\n\ | |
7885 | \twatchpoint - watchpoint\n\ | |
7886 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7887 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7888 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7889 | address and file/line number respectively.\n\n", | |
c5aa993b | 7890 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7891 | are set to the address of the last breakpoint listed.\n\n\ |
7892 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7893 | breakpoint set.", NULL)); | |
7894 | ||
c906108c | 7895 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7896 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7897 | The \"Type\" column indicates one of:\n\ |
7898 | \tbreakpoint - normal breakpoint\n\ | |
7899 | \twatchpoint - watchpoint\n\ | |
7900 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7901 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7902 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7903 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7904 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7905 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7906 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7907 | address and file/line number respectively.\n\n", | |
c5aa993b | 7908 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7909 | are set to the address of the last breakpoint listed.\n\n\ |
7910 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7911 | breakpoint set.", NULL), | |
7912 | &maintenanceinfolist); | |
7913 | ||
c906108c | 7914 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7915 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7916 | Raised signals may be caught:\n\ |
7917 | \tcatch signal - all signals\n\ | |
7918 | \tcatch signal <signame> - a particular signal\n\ | |
7919 | Raised exceptions may be caught:\n\ | |
7920 | \tcatch throw - all exceptions, when thrown\n\ | |
7921 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7922 | \tcatch catch - all exceptions, when caught\n\ | |
7923 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7924 | Thread or process events may be caught:\n\ | |
7925 | \tcatch thread_start - any threads, just after creation\n\ | |
7926 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7927 | \tcatch thread_join - any threads, just after joins\n\ | |
7928 | Process events may be caught:\n\ | |
7929 | \tcatch start - any processes, just after creation\n\ | |
7930 | \tcatch exit - any processes, just before expiration\n\ | |
7931 | \tcatch fork - calls to fork()\n\ | |
7932 | \tcatch vfork - calls to vfork()\n\ | |
7933 | \tcatch exec - calls to exec()\n\ | |
7934 | Dynamically-linked library events may be caught:\n\ | |
7935 | \tcatch load - loads of any library\n\ | |
7936 | \tcatch load <libname> - loads of a particular library\n\ | |
7937 | \tcatch unload - unloads of any library\n\ | |
7938 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7939 | The act of your program's execution stopping may also be caught:\n\ | |
7940 | \tcatch stop\n\n\ | |
7941 | C++ exceptions may be caught:\n\ | |
7942 | \tcatch throw - all exceptions, when thrown\n\ | |
7943 | \tcatch catch - all exceptions, when caught\n\ | |
7944 | \n\ | |
7945 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7946 | after a fork or vfork is caught.\n\n\ | |
7947 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7948 | |
c906108c | 7949 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7950 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7951 | Args like \"catch\" command.\n\ |
7952 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7953 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7954 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b JM |
7955 | |
7956 | add_com ("watch", class_breakpoint, watch_command, | |
c906108c SS |
7957 | "Set a watchpoint for an expression.\n\ |
7958 | A watchpoint stops execution of your program whenever the value of\n\ | |
7959 | an expression changes."); | |
7960 | ||
7961 | add_com ("rwatch", class_breakpoint, rwatch_command, | |
7962 | "Set a read watchpoint for an expression.\n\ | |
7963 | A watchpoint stops execution of your program whenever the value of\n\ | |
7964 | an expression is read."); | |
7965 | ||
7966 | add_com ("awatch", class_breakpoint, awatch_command, | |
7967 | "Set a watchpoint for an expression.\n\ | |
7968 | A watchpoint stops execution of your program whenever the value of\n\ | |
7969 | an expression is either read or written."); | |
7970 | ||
7971 | add_info ("watchpoints", breakpoints_info, | |
7972 | "Synonym for ``info breakpoints''."); | |
7973 | ||
7974 | ||
7975 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7976 | (char *) &can_use_hw_watchpoints, |
7977 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7978 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7979 | such is available. (However, any hardware watchpoints that were\n\ | |
7980 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7981 | hardware.)", | |
c5aa993b | 7982 | &setlist); |
c906108c SS |
7983 | add_show_from_set (c, &showlist); |
7984 | ||
7985 | can_use_hw_watchpoints = 1; | |
7986 | } |