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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" | |
42 | ||
104c1213 JM |
43 | #include "gdb-events.h" |
44 | ||
c906108c SS |
45 | /* Prototypes for local functions. */ |
46 | ||
c2c6d25f JM |
47 | static void until_break_command_continuation (struct continuation_arg *arg); |
48 | ||
c906108c SS |
49 | static void |
50 | catch_command_1 PARAMS ((char *, int, int)); | |
51 | ||
52 | static void | |
53 | enable_delete_command PARAMS ((char *, int)); | |
54 | ||
55 | static void | |
56 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
57 | ||
58 | static void | |
59 | enable_once_command PARAMS ((char *, int)); | |
60 | ||
61 | static void | |
62 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
63 | ||
64 | static void | |
65 | disable_command PARAMS ((char *, int)); | |
66 | ||
67 | static void | |
68 | enable_command PARAMS ((char *, int)); | |
69 | ||
70 | static void | |
c5aa993b | 71 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); |
c906108c SS |
72 | |
73 | static void | |
74 | ignore_command PARAMS ((char *, int)); | |
75 | ||
76 | static int breakpoint_re_set_one PARAMS ((PTR)); | |
77 | ||
78 | static void | |
79 | clear_command PARAMS ((char *, int)); | |
80 | ||
81 | static void | |
82 | catch_command PARAMS ((char *, int)); | |
83 | ||
84 | static void | |
85 | handle_gnu_4_16_catch_command PARAMS ((char *, int, int)); | |
86 | ||
87 | static struct symtabs_and_lines | |
88 | get_catch_sals PARAMS ((int)); | |
89 | ||
90 | static void | |
91 | watch_command PARAMS ((char *, int)); | |
92 | ||
93 | static int | |
94 | can_use_hardware_watchpoint PARAMS ((struct value *)); | |
95 | ||
7a292a7a SS |
96 | static void break_at_finish_command PARAMS ((char *, int)); |
97 | static void break_at_finish_at_depth_command PARAMS ((char *, int)); | |
98 | ||
c906108c SS |
99 | void |
100 | tbreak_command PARAMS ((char *, int)); | |
101 | ||
7a292a7a SS |
102 | static void tbreak_at_finish_command PARAMS ((char *, int)); |
103 | ||
c906108c SS |
104 | static void |
105 | break_command_1 PARAMS ((char *, int, int)); | |
106 | ||
107 | static void | |
108 | mention PARAMS ((struct breakpoint *)); | |
109 | ||
110 | struct breakpoint * | |
c5aa993b | 111 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); |
c906108c SS |
112 | |
113 | static void | |
114 | check_duplicates PARAMS ((CORE_ADDR, asection *)); | |
115 | ||
116 | static void | |
117 | describe_other_breakpoints PARAMS ((CORE_ADDR, asection *)); | |
118 | ||
119 | static void | |
120 | breakpoints_info PARAMS ((char *, int)); | |
121 | ||
122 | static void | |
123 | breakpoint_1 PARAMS ((int, int)); | |
124 | ||
125 | static bpstat | |
c5aa993b | 126 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); |
c906108c SS |
127 | |
128 | static int breakpoint_cond_eval PARAMS ((PTR)); | |
129 | ||
130 | static void | |
131 | cleanup_executing_breakpoints PARAMS ((PTR)); | |
132 | ||
133 | static void | |
134 | commands_command PARAMS ((char *, int)); | |
135 | ||
136 | static void | |
137 | condition_command PARAMS ((char *, int)); | |
138 | ||
139 | static int | |
5c44784c | 140 | get_number_trailer PARAMS ((char **, int)); |
c906108c SS |
141 | |
142 | void | |
143 | set_breakpoint_count PARAMS ((int)); | |
144 | ||
145 | #if 0 | |
146 | static struct breakpoint * | |
c5aa993b | 147 | create_temp_exception_breakpoint PARAMS ((CORE_ADDR)); |
c906108c SS |
148 | #endif |
149 | ||
c5aa993b JM |
150 | typedef enum |
151 | { | |
152 | mark_inserted, | |
153 | mark_uninserted | |
154 | } | |
155 | insertion_state_t; | |
c906108c SS |
156 | |
157 | static int | |
158 | remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t)); | |
159 | ||
e514a9d6 JM |
160 | static enum print_stop_action print_it_typical PARAMS ((bpstat)); |
161 | ||
162 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 163 | |
c5aa993b JM |
164 | typedef struct |
165 | { | |
166 | enum exception_event_kind kind; | |
167 | int enable; | |
168 | } | |
169 | args_for_catchpoint_enable; | |
c906108c SS |
170 | |
171 | static int watchpoint_check PARAMS ((PTR)); | |
172 | ||
173 | static int cover_target_enable_exception_callback PARAMS ((PTR)); | |
174 | ||
c906108c SS |
175 | static void maintenance_info_breakpoints PARAMS ((char *, int)); |
176 | ||
177 | #ifdef GET_LONGJMP_TARGET | |
178 | static void create_longjmp_breakpoint PARAMS ((char *)); | |
179 | #endif | |
180 | ||
181 | static int hw_breakpoint_used_count PARAMS ((void)); | |
182 | ||
183 | static int hw_watchpoint_used_count PARAMS ((enum bptype, int *)); | |
184 | ||
185 | static void hbreak_command PARAMS ((char *, int)); | |
186 | ||
187 | static void thbreak_command PARAMS ((char *, int)); | |
188 | ||
189 | static void watch_command_1 PARAMS ((char *, int, int)); | |
190 | ||
191 | static void rwatch_command PARAMS ((char *, int)); | |
192 | ||
193 | static void awatch_command PARAMS ((char *, int)); | |
194 | ||
195 | static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); | |
196 | ||
53a5351d JM |
197 | static void solib_load_unload_1 PARAMS ((char *hookname, |
198 | int tempflag, | |
199 | char *dll_pathname, | |
200 | char *cond_string, | |
201 | enum bptype bp_kind)); | |
7a292a7a | 202 | |
53a5351d JM |
203 | static void create_fork_vfork_event_catchpoint PARAMS ((int tempflag, |
204 | char *cond_string, | |
205 | enum bptype bp_kind)); | |
7a292a7a | 206 | |
53a5351d JM |
207 | static void break_at_finish_at_depth_command_1 PARAMS ((char *arg, |
208 | int flag, | |
209 | int from_tty)); | |
7a292a7a | 210 | |
53a5351d JM |
211 | static void break_at_finish_command_1 PARAMS ((char *arg, |
212 | int flag, | |
213 | int from_tty)); | |
7a292a7a SS |
214 | |
215 | static void stop_command PARAMS ((char *arg, int from_tty)); | |
216 | ||
217 | static void stopin_command PARAMS ((char *arg, int from_tty)); | |
218 | ||
219 | static void stopat_command PARAMS ((char *arg, int from_tty)); | |
220 | ||
221 | static char *ep_find_event_name_end PARAMS ((char *arg)); | |
222 | ||
223 | static char *ep_parse_optional_if_clause PARAMS ((char **arg)); | |
224 | ||
225 | static char *ep_parse_optional_filename PARAMS ((char **arg)); | |
226 | ||
e514a9d6 | 227 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
53a5351d JM |
228 | static void catch_exec_command_1 PARAMS ((char *arg, int tempflag, |
229 | int from_tty)); | |
e514a9d6 | 230 | #endif |
7a292a7a | 231 | |
53a5351d JM |
232 | static void create_exception_catchpoint |
233 | PARAMS ((int tempflag, char *cond_string, | |
234 | enum exception_event_kind ex_event, | |
235 | struct symtab_and_line * sal)); | |
7a292a7a | 236 | |
53a5351d JM |
237 | static void catch_exception_command_1 |
238 | PARAMS ((enum exception_event_kind ex_event, | |
239 | char *arg, int tempflag, int from_tty)); | |
7a292a7a SS |
240 | |
241 | static void tcatch_command PARAMS ((char *arg, int from_tty)); | |
242 | ||
243 | static void ep_skip_leading_whitespace PARAMS ((char **s)); | |
244 | ||
c906108c SS |
245 | /* Prototypes for exported functions. */ |
246 | ||
247 | static void | |
248 | awatch_command PARAMS ((char *, int)); | |
249 | ||
250 | static void | |
251 | do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); | |
252 | ||
253 | /* If FALSE, gdb will not use hardware support for watchpoints, even | |
254 | if such is available. */ | |
255 | static int can_use_hw_watchpoints; | |
256 | ||
c906108c SS |
257 | void _initialize_breakpoint PARAMS ((void)); |
258 | ||
259 | void set_breakpoint_count PARAMS ((int)); | |
260 | ||
c5aa993b | 261 | extern int addressprint; /* Print machine addresses? */ |
c906108c SS |
262 | |
263 | #if defined (GET_LONGJMP_TARGET) || defined (SOLIB_ADD) | |
264 | static int internal_breakpoint_number = -1; | |
265 | #endif | |
266 | ||
267 | /* Are we executing breakpoint commands? */ | |
268 | static int executing_breakpoint_commands; | |
269 | ||
270 | /* Walk the following statement or block through all breakpoints. | |
271 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
272 | breakpoint. */ | |
273 | ||
5c44784c | 274 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 275 | |
5c44784c JM |
276 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
277 | for (B = breakpoint_chain; \ | |
278 | B ? (TMP=B->next, 1): 0; \ | |
279 | B = TMP) | |
c906108c SS |
280 | |
281 | /* True if SHIFT_INST_REGS defined, false otherwise. */ | |
282 | ||
283 | int must_shift_inst_regs = | |
284 | #if defined(SHIFT_INST_REGS) | |
285 | 1 | |
286 | #else | |
287 | 0 | |
288 | #endif | |
c5aa993b | 289 | ; |
c906108c SS |
290 | |
291 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ | |
292 | ||
293 | int show_breakpoint_hit_counts = 1; | |
294 | ||
295 | /* Chain of all breakpoints defined. */ | |
296 | ||
297 | struct breakpoint *breakpoint_chain; | |
298 | ||
299 | /* Number of last breakpoint made. */ | |
300 | ||
301 | int breakpoint_count; | |
302 | ||
c5aa993b JM |
303 | /* Pointer to current exception event record */ |
304 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
305 | |
306 | /* Indicator of whether exception catchpoints should be nuked | |
307 | between runs of a program */ | |
308 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 309 | |
c906108c SS |
310 | /* Indicator of when exception catchpoints set-up should be |
311 | reinitialized -- e.g. when program is re-run */ | |
312 | int exception_support_initialized = 0; | |
313 | ||
314 | /* This function returns a pointer to the string representation of the | |
315 | pathname of the dynamically-linked library that has just been | |
316 | loaded. | |
317 | ||
318 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
319 | or undefined results are guaranteed. | |
320 | ||
321 | This string's contents are only valid immediately after the | |
322 | inferior has stopped in the dynamic linker hook, and becomes | |
323 | invalid as soon as the inferior is continued. Clients should make | |
324 | a copy of this string if they wish to continue the inferior and | |
325 | then access the string. */ | |
326 | ||
327 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
328 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
329 | #endif | |
330 | ||
331 | /* This function returns a pointer to the string representation of the | |
332 | pathname of the dynamically-linked library that has just been | |
333 | unloaded. | |
334 | ||
335 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
336 | TRUE, or undefined results are guaranteed. | |
337 | ||
338 | This string's contents are only valid immediately after the | |
339 | inferior has stopped in the dynamic linker hook, and becomes | |
340 | invalid as soon as the inferior is continued. Clients should make | |
341 | a copy of this string if they wish to continue the inferior and | |
342 | then access the string. */ | |
343 | ||
344 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
345 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
346 | #endif | |
347 | ||
348 | /* This function is called by the "catch load" command. It allows the | |
349 | debugger to be notified by the dynamic linker when a specified | |
350 | library file (or any library file, if filename is NULL) is loaded. */ | |
351 | ||
352 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
353 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
354 | error ("catch of library loads not yet implemented on this platform") | |
355 | #endif | |
356 | ||
357 | /* This function is called by the "catch unload" command. It allows | |
358 | the debugger to be notified by the dynamic linker when a specified | |
359 | library file (or any library file, if filename is NULL) is | |
360 | unloaded. */ | |
361 | ||
362 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
363 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
364 | error ("catch of library unloads not yet implemented on this platform") | |
365 | #endif | |
366 | ||
367 | /* Set breakpoint count to NUM. */ | |
368 | ||
369 | void | |
370 | set_breakpoint_count (num) | |
371 | int num; | |
372 | { | |
373 | breakpoint_count = num; | |
374 | set_internalvar (lookup_internalvar ("bpnum"), | |
375 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
376 | } | |
377 | ||
378 | /* Used in run_command to zero the hit count when a new run starts. */ | |
379 | ||
380 | void | |
381 | clear_breakpoint_hit_counts () | |
382 | { | |
383 | struct breakpoint *b; | |
384 | ||
385 | ALL_BREAKPOINTS (b) | |
386 | b->hit_count = 0; | |
387 | } | |
388 | ||
389 | /* Default address, symtab and line to put a breakpoint at | |
390 | for "break" command with no arg. | |
391 | if default_breakpoint_valid is zero, the other three are | |
392 | not valid, and "break" with no arg is an error. | |
393 | ||
394 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
395 | ||
396 | int default_breakpoint_valid; | |
397 | CORE_ADDR default_breakpoint_address; | |
398 | struct symtab *default_breakpoint_symtab; | |
399 | int default_breakpoint_line; | |
400 | \f | |
401 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
402 | Advance *PP after the string and any trailing whitespace. | |
403 | ||
404 | Currently the string can either be a number or "$" followed by the name | |
405 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
406 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
407 | ||
408 | TRAILER is a character which can be found after the number; most | |
409 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 410 | static int |
5c44784c | 411 | get_number_trailer (pp, trailer) |
c906108c | 412 | char **pp; |
5c44784c | 413 | int trailer; |
c906108c | 414 | { |
5c44784c | 415 | int retval = 0; /* default */ |
c906108c SS |
416 | char *p = *pp; |
417 | ||
418 | if (p == NULL) | |
419 | /* Empty line means refer to the last breakpoint. */ | |
420 | return breakpoint_count; | |
421 | else if (*p == '$') | |
422 | { | |
423 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 424 | to pass to lookup_internalvar(). */ |
c906108c SS |
425 | char *varname; |
426 | char *start = ++p; | |
427 | value_ptr val; | |
428 | ||
429 | while (isalnum (*p) || *p == '_') | |
430 | p++; | |
431 | varname = (char *) alloca (p - start + 1); | |
432 | strncpy (varname, start, p - start); | |
433 | varname[p - start] = '\0'; | |
434 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
435 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
436 | retval = (int) value_as_long (val); | |
437 | else | |
438 | { | |
439 | printf_filtered ("Convenience variable must have integer value.\n"); | |
440 | retval = 0; | |
441 | } | |
c906108c SS |
442 | } |
443 | else | |
444 | { | |
445 | if (*p == '-') | |
446 | ++p; | |
447 | while (*p >= '0' && *p <= '9') | |
448 | ++p; | |
449 | if (p == *pp) | |
450 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
451 | { |
452 | /* Skip non-numeric token */ | |
453 | while (*p && !isspace((int) *p)) | |
454 | ++p; | |
455 | /* Return zero, which caller must interpret as error. */ | |
456 | retval = 0; | |
457 | } | |
458 | else | |
459 | retval = atoi (*pp); | |
460 | } | |
461 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
462 | { | |
463 | /* Trailing junk: return 0 and let caller print error msg. */ | |
464 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
465 | ++p; | |
466 | retval = 0; | |
c906108c | 467 | } |
c906108c SS |
468 | while (isspace (*p)) |
469 | p++; | |
470 | *pp = p; | |
471 | return retval; | |
472 | } | |
5c44784c | 473 | |
11cf8741 | 474 | |
5c44784c JM |
475 | /* Like get_number_trailer, but don't allow a trailer. */ |
476 | int | |
477 | get_number (pp) | |
478 | char **pp; | |
479 | { | |
480 | return get_number_trailer (pp, '\0'); | |
481 | } | |
482 | ||
483 | /* Parse a number or a range. | |
484 | * A number will be of the form handled by get_number. | |
485 | * A range will be of the form <number1> - <number2>, and | |
486 | * will represent all the integers between number1 and number2, | |
487 | * inclusive. | |
488 | * | |
489 | * While processing a range, this fuction is called iteratively; | |
490 | * At each call it will return the next value in the range. | |
491 | * | |
492 | * At the beginning of parsing a range, the char pointer PP will | |
493 | * be advanced past <number1> and left pointing at the '-' token. | |
494 | * Subsequent calls will not advance the pointer until the range | |
495 | * is completed. The call that completes the range will advance | |
496 | * pointer PP past <number2>. | |
497 | */ | |
498 | ||
499 | int | |
500 | get_number_or_range (pp) | |
501 | char **pp; | |
502 | { | |
503 | static int last_retval, end_value; | |
504 | static char *end_ptr; | |
505 | static int in_range = 0; | |
506 | ||
507 | if (**pp != '-') | |
508 | { | |
509 | /* Default case: pp is pointing either to a solo number, | |
510 | or to the first number of a range. */ | |
511 | last_retval = get_number_trailer (pp, '-'); | |
512 | if (**pp == '-') | |
513 | { | |
514 | char **temp; | |
515 | ||
516 | /* This is the start of a range (<number1> - <number2>). | |
517 | Skip the '-', parse and remember the second number, | |
518 | and also remember the end of the final token. */ | |
519 | ||
520 | temp = &end_ptr; | |
521 | end_ptr = *pp + 1; | |
522 | while (isspace ((int) *end_ptr)) | |
523 | end_ptr++; /* skip white space */ | |
524 | end_value = get_number (temp); | |
525 | if (end_value < last_retval) | |
526 | { | |
527 | error ("inverted range"); | |
528 | } | |
529 | else if (end_value == last_retval) | |
530 | { | |
531 | /* degenerate range (number1 == number2). Advance the | |
532 | token pointer so that the range will be treated as a | |
533 | single number. */ | |
534 | *pp = end_ptr; | |
535 | } | |
536 | else | |
537 | in_range = 1; | |
538 | } | |
539 | } | |
540 | else if (! in_range) | |
541 | error ("negative value"); | |
542 | else | |
543 | { | |
544 | /* pp points to the '-' that betokens a range. All | |
545 | number-parsing has already been done. Return the next | |
546 | integer value (one greater than the saved previous value). | |
547 | Do not advance the token pointer 'pp' until the end of range | |
548 | is reached. */ | |
549 | ||
550 | if (++last_retval == end_value) | |
551 | { | |
552 | /* End of range reached; advance token pointer. */ | |
553 | *pp = end_ptr; | |
554 | in_range = 0; | |
555 | } | |
556 | } | |
557 | return last_retval; | |
558 | } | |
559 | ||
560 | ||
c906108c SS |
561 | \f |
562 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
563 | ||
564 | static void | |
565 | condition_command (arg, from_tty) | |
566 | char *arg; | |
567 | int from_tty; | |
568 | { | |
569 | register struct breakpoint *b; | |
570 | char *p; | |
571 | register int bnum; | |
572 | ||
573 | if (arg == 0) | |
574 | error_no_arg ("breakpoint number"); | |
575 | ||
576 | p = arg; | |
577 | bnum = get_number (&p); | |
5c44784c JM |
578 | if (bnum == 0) |
579 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
580 | |
581 | ALL_BREAKPOINTS (b) | |
582 | if (b->number == bnum) | |
c5aa993b JM |
583 | { |
584 | if (b->cond) | |
585 | { | |
586 | free ((PTR) b->cond); | |
587 | b->cond = 0; | |
588 | } | |
589 | if (b->cond_string != NULL) | |
590 | free ((PTR) b->cond_string); | |
c906108c | 591 | |
c5aa993b JM |
592 | if (*p == 0) |
593 | { | |
594 | b->cond = 0; | |
595 | b->cond_string = NULL; | |
596 | if (from_tty) | |
597 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
598 | } | |
599 | else | |
600 | { | |
601 | arg = p; | |
602 | /* I don't know if it matters whether this is the string the user | |
603 | typed in or the decompiled expression. */ | |
604 | b->cond_string = savestring (arg, strlen (arg)); | |
605 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); | |
606 | if (*arg) | |
607 | error ("Junk at end of expression"); | |
608 | } | |
609 | breakpoints_changed (); | |
610 | return; | |
611 | } | |
c906108c SS |
612 | |
613 | error ("No breakpoint number %d.", bnum); | |
614 | } | |
615 | ||
616 | /* ARGSUSED */ | |
617 | static void | |
618 | commands_command (arg, from_tty) | |
619 | char *arg; | |
620 | int from_tty; | |
621 | { | |
622 | register struct breakpoint *b; | |
623 | char *p; | |
624 | register int bnum; | |
625 | struct command_line *l; | |
626 | ||
627 | /* If we allowed this, we would have problems with when to | |
628 | free the storage, if we change the commands currently | |
629 | being read from. */ | |
630 | ||
631 | if (executing_breakpoint_commands) | |
632 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
633 | ||
634 | p = arg; | |
635 | bnum = get_number (&p); | |
5c44784c | 636 | |
c906108c SS |
637 | if (p && *p) |
638 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 639 | |
c906108c SS |
640 | ALL_BREAKPOINTS (b) |
641 | if (b->number == bnum) | |
c5aa993b JM |
642 | { |
643 | char tmpbuf[128]; | |
53a5351d JM |
644 | sprintf (tmpbuf, |
645 | "Type commands for when breakpoint %d is hit, one per line.", | |
646 | bnum); | |
c5aa993b JM |
647 | l = read_command_lines (tmpbuf, from_tty); |
648 | free_command_lines (&b->commands); | |
649 | b->commands = l; | |
650 | breakpoints_changed (); | |
651 | return; | |
652 | } | |
c906108c SS |
653 | error ("No breakpoint number %d.", bnum); |
654 | } | |
655 | \f | |
656 | /* Like target_read_memory() but if breakpoints are inserted, return | |
657 | the shadow contents instead of the breakpoints themselves. | |
658 | ||
659 | Read "memory data" from whatever target or inferior we have. | |
660 | Returns zero if successful, errno value if not. EIO is used | |
661 | for address out of bounds. If breakpoints are inserted, returns | |
662 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
663 | ||
664 | int | |
665 | read_memory_nobpt (memaddr, myaddr, len) | |
666 | CORE_ADDR memaddr; | |
667 | char *myaddr; | |
668 | unsigned len; | |
669 | { | |
670 | int status; | |
671 | struct breakpoint *b; | |
672 | CORE_ADDR bp_addr = 0; | |
673 | int bp_size = 0; | |
674 | ||
675 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
676 | /* No breakpoints on this machine. */ | |
677 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 678 | |
c906108c | 679 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
680 | { |
681 | if (b->type == bp_none) | |
53a5351d JM |
682 | warning ("reading through apparently deleted breakpoint #%d?", |
683 | b->number); | |
c5aa993b JM |
684 | |
685 | /* memory breakpoint? */ | |
686 | if (b->type == bp_watchpoint | |
687 | || b->type == bp_hardware_watchpoint | |
688 | || b->type == bp_read_watchpoint | |
689 | || b->type == bp_access_watchpoint) | |
690 | continue; | |
691 | /* bp in memory? */ | |
692 | if (!b->inserted) | |
693 | continue; | |
694 | /* Addresses and length of the part of the breakpoint that | |
695 | we need to copy. */ | |
696 | /* XXXX The m68k, sh and h8300 have different local and remote | |
697 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
698 | correctly determine the breakpoints memory address and size | |
699 | for these targets. */ | |
700 | bp_addr = b->address; | |
701 | bp_size = 0; | |
702 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
703 | continue; | |
704 | if (bp_size == 0) | |
705 | /* bp isn't valid */ | |
706 | continue; | |
707 | if (bp_addr + bp_size <= memaddr) | |
708 | /* The breakpoint is entirely before the chunk of memory we | |
709 | are reading. */ | |
710 | continue; | |
711 | if (bp_addr >= memaddr + len) | |
712 | /* The breakpoint is entirely after the chunk of memory we are | |
713 | reading. */ | |
714 | continue; | |
715 | /* Copy the breakpoint from the shadow contents, and recurse for | |
716 | the things before and after. */ | |
c906108c | 717 | { |
c5aa993b JM |
718 | /* Offset within shadow_contents. */ |
719 | int bptoffset = 0; | |
c906108c | 720 | |
c5aa993b JM |
721 | if (bp_addr < memaddr) |
722 | { | |
723 | /* Only copy the second part of the breakpoint. */ | |
724 | bp_size -= memaddr - bp_addr; | |
725 | bptoffset = memaddr - bp_addr; | |
726 | bp_addr = memaddr; | |
727 | } | |
728 | ||
729 | if (bp_addr + bp_size > memaddr + len) | |
730 | { | |
731 | /* Only copy the first part of the breakpoint. */ | |
732 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
733 | } | |
734 | ||
735 | memcpy (myaddr + bp_addr - memaddr, | |
736 | b->shadow_contents + bptoffset, bp_size); | |
737 | ||
738 | if (bp_addr > memaddr) | |
739 | { | |
740 | /* Copy the section of memory before the breakpoint. */ | |
741 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
742 | if (status != 0) | |
743 | return status; | |
744 | } | |
745 | ||
746 | if (bp_addr + bp_size < memaddr + len) | |
747 | { | |
748 | /* Copy the section of memory after the breakpoint. */ | |
749 | status = read_memory_nobpt | |
750 | (bp_addr + bp_size, | |
751 | myaddr + bp_addr + bp_size - memaddr, | |
752 | memaddr + len - (bp_addr + bp_size)); | |
753 | if (status != 0) | |
754 | return status; | |
755 | } | |
756 | return 0; | |
c906108c | 757 | } |
c5aa993b | 758 | } |
c906108c SS |
759 | /* Nothing overlaps. Just call read_memory_noerr. */ |
760 | return target_read_memory (memaddr, myaddr, len); | |
761 | } | |
c906108c | 762 | \f |
c5aa993b | 763 | |
c906108c SS |
764 | /* insert_breakpoints is used when starting or continuing the program. |
765 | remove_breakpoints is used when the program stops. | |
766 | Both return zero if successful, | |
767 | or an `errno' value if could not write the inferior. */ | |
768 | ||
769 | int | |
770 | insert_breakpoints () | |
771 | { | |
772 | register struct breakpoint *b, *temp; | |
53a5351d | 773 | int return_val = 0; /* return success code. */ |
c906108c SS |
774 | int val = 0; |
775 | int disabled_breaks = 0; | |
776 | ||
777 | static char message1[] = "Error inserting catchpoint %d:\n"; | |
778 | static char message[sizeof (message1) + 30]; | |
779 | ||
780 | ||
781 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 782 | { |
c2c6d25f JM |
783 | if (b->enable == permanent) |
784 | /* Permanent breakpoints cannot be inserted or removed. */ | |
785 | continue; | |
786 | else if (b->type != bp_watchpoint | |
c5aa993b JM |
787 | && b->type != bp_hardware_watchpoint |
788 | && b->type != bp_read_watchpoint | |
789 | && b->type != bp_access_watchpoint | |
790 | && b->type != bp_catch_fork | |
791 | && b->type != bp_catch_vfork | |
792 | && b->type != bp_catch_exec | |
793 | && b->type != bp_catch_throw | |
794 | && b->type != bp_catch_catch | |
795 | && b->enable != disabled | |
796 | && b->enable != shlib_disabled | |
797 | && b->enable != call_disabled | |
798 | && !b->inserted | |
799 | && !b->duplicate) | |
800 | { | |
801 | if (b->type == bp_hardware_breakpoint) | |
802 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
803 | else | |
804 | { | |
805 | /* Check to see if breakpoint is in an overlay section; | |
806 | if so, we should set the breakpoint at the LMA address. | |
807 | Only if the section is currently mapped should we ALSO | |
808 | set a break at the VMA address. */ | |
809 | if (overlay_debugging && b->section && | |
810 | section_is_overlay (b->section)) | |
811 | { | |
812 | CORE_ADDR addr; | |
813 | ||
814 | addr = overlay_unmapped_address (b->address, b->section); | |
815 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
816 | /* This would be the time to check val, to see if the | |
817 | breakpoint write to the load address succeeded. | |
818 | However, this might be an ordinary occurrance, eg. if | |
819 | the unmapped overlay is in ROM. */ | |
820 | val = 0; /* in case unmapped address failed */ | |
821 | if (section_is_mapped (b->section)) | |
822 | val = target_insert_breakpoint (b->address, | |
823 | b->shadow_contents); | |
824 | } | |
825 | else /* ordinary (non-overlay) address */ | |
826 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
827 | } | |
828 | if (val) | |
829 | { | |
830 | /* Can't set the breakpoint. */ | |
c906108c | 831 | #if defined (DISABLE_UNSETTABLE_BREAK) |
c5aa993b JM |
832 | if (DISABLE_UNSETTABLE_BREAK (b->address)) |
833 | { | |
834 | /* See also: disable_breakpoints_in_shlibs. */ | |
835 | val = 0; | |
836 | b->enable = shlib_disabled; | |
837 | if (!disabled_breaks) | |
838 | { | |
839 | target_terminal_ours_for_output (); | |
53a5351d JM |
840 | warning ("Cannot insert breakpoint %d:", b->number); |
841 | warning ("Temporarily disabling shared library breakpoints:"); | |
c5aa993b JM |
842 | } |
843 | disabled_breaks = 1; | |
53a5351d | 844 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
845 | } |
846 | else | |
c906108c | 847 | #endif |
c5aa993b JM |
848 | { |
849 | target_terminal_ours_for_output (); | |
53a5351d | 850 | warning ("Cannot insert breakpoint %d:", b->number); |
c906108c | 851 | #ifdef ONE_PROCESS_WRITETEXT |
53a5351d | 852 | warning ("The same program may be running in another process."); |
c906108c | 853 | #endif |
53a5351d | 854 | memory_error (val, b->address); /* which bombs us out */ |
c5aa993b JM |
855 | } |
856 | } | |
857 | else | |
858 | b->inserted = 1; | |
53a5351d JM |
859 | |
860 | if (val) | |
861 | return_val = val; /* remember failure */ | |
c5aa993b | 862 | } |
c906108c | 863 | else if (ep_is_exception_catchpoint (b) |
c5aa993b JM |
864 | && b->enable != disabled |
865 | && b->enable != shlib_disabled | |
866 | && b->enable != call_disabled | |
867 | && !b->inserted | |
868 | && !b->duplicate) | |
c906108c SS |
869 | |
870 | { | |
c5aa993b JM |
871 | /* If we get here, we must have a callback mechanism for exception |
872 | events -- with g++ style embedded label support, we insert | |
873 | ordinary breakpoints and not catchpoints. */ | |
53a5351d JM |
874 | /* Format possible error message */ |
875 | sprintf (message, message1, b->number); | |
c5aa993b JM |
876 | |
877 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
878 | if (val) | |
879 | { | |
880 | /* Couldn't set breakpoint for some reason */ | |
881 | target_terminal_ours_for_output (); | |
53a5351d JM |
882 | warning ("Cannot insert catchpoint %d; disabling it.", |
883 | b->number); | |
c5aa993b JM |
884 | b->enable = disabled; |
885 | } | |
886 | else | |
887 | { | |
888 | /* Bp set, now make sure callbacks are enabled */ | |
c906108c | 889 | int val; |
c5aa993b | 890 | args_for_catchpoint_enable args; |
53a5351d JM |
891 | args.kind = b->type == bp_catch_catch ? |
892 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
893 | args.enable = 1; |
894 | val = catch_errors (cover_target_enable_exception_callback, | |
895 | &args, | |
896 | message, RETURN_MASK_ALL); | |
897 | if (val != 0 && val != -1) | |
898 | { | |
899 | b->inserted = 1; | |
900 | } | |
c5aa993b | 901 | /* Check if something went wrong; val == 0 can be ignored */ |
c906108c SS |
902 | if (val == -1) |
903 | { | |
c5aa993b | 904 | /* something went wrong */ |
c906108c | 905 | target_terminal_ours_for_output (); |
53a5351d JM |
906 | warning ("Cannot insert catchpoint %d; disabling it.", |
907 | b->number); | |
c906108c SS |
908 | b->enable = disabled; |
909 | } | |
c5aa993b | 910 | } |
53a5351d JM |
911 | |
912 | if (val) | |
913 | return_val = val; /* remember failure */ | |
c906108c SS |
914 | } |
915 | ||
c5aa993b JM |
916 | else if ((b->type == bp_hardware_watchpoint || |
917 | b->type == bp_read_watchpoint || | |
918 | b->type == bp_access_watchpoint) | |
919 | && b->enable == enabled | |
920 | && !b->inserted | |
921 | && !b->duplicate) | |
922 | { | |
923 | struct frame_info *saved_frame; | |
924 | int saved_level, within_current_scope; | |
925 | value_ptr mark = value_mark (); | |
926 | value_ptr v; | |
927 | ||
928 | /* Save the current frame and level so we can restore it after | |
929 | evaluating the watchpoint expression on its own frame. */ | |
930 | saved_frame = selected_frame; | |
931 | saved_level = selected_frame_level; | |
932 | ||
933 | /* Determine if the watchpoint is within scope. */ | |
934 | if (b->exp_valid_block == NULL) | |
935 | within_current_scope = 1; | |
936 | else | |
937 | { | |
938 | struct frame_info *fi; | |
939 | ||
940 | /* There might be no current frame at this moment if we are | |
941 | resuming from a step over a breakpoint. | |
942 | Set up current frame before trying to find the watchpoint | |
943 | frame. */ | |
944 | get_current_frame (); | |
945 | fi = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
946 | within_current_scope = (fi != NULL); | |
947 | if (within_current_scope) | |
948 | select_frame (fi, -1); | |
949 | } | |
950 | ||
951 | if (within_current_scope) | |
952 | { | |
953 | /* Evaluate the expression and cut the chain of values | |
5c44784c JM |
954 | produced off from the value chain. |
955 | ||
956 | Make sure the value returned isn't lazy; we use | |
957 | laziness to determine what memory GDB actually needed | |
958 | in order to compute the value of the expression. */ | |
c5aa993b | 959 | v = evaluate_expression (b->exp); |
5c44784c | 960 | VALUE_CONTENTS(v); |
c5aa993b JM |
961 | value_release_to_mark (mark); |
962 | ||
963 | b->val_chain = v; | |
964 | b->inserted = 1; | |
965 | ||
966 | /* Look at each value on the value chain. */ | |
967 | for (; v; v = v->next) | |
968 | { | |
5c44784c JM |
969 | /* If it's a memory location, and GDB actually needed |
970 | its contents to evaluate the expression, then we | |
971 | must watch it. */ | |
972 | if (VALUE_LVAL (v) == lval_memory | |
973 | && ! VALUE_LAZY (v)) | |
c5aa993b | 974 | { |
2acceee2 JM |
975 | CORE_ADDR addr; |
976 | int len, type; | |
c5aa993b JM |
977 | |
978 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
979 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
53a5351d | 980 | type = hw_write; |
c5aa993b | 981 | if (b->type == bp_read_watchpoint) |
53a5351d | 982 | type = hw_read; |
c5aa993b | 983 | else if (b->type == bp_access_watchpoint) |
53a5351d | 984 | type = hw_access; |
c5aa993b JM |
985 | |
986 | val = target_insert_watchpoint (addr, len, type); | |
987 | if (val == -1) | |
988 | { | |
989 | b->inserted = 0; | |
990 | break; | |
991 | } | |
992 | val = 0; | |
993 | } | |
994 | } | |
995 | /* Failure to insert a watchpoint on any memory value in the | |
996 | value chain brings us here. */ | |
997 | if (!b->inserted) | |
53a5351d JM |
998 | { |
999 | remove_breakpoint (b, mark_uninserted); | |
1000 | warning ("Could not insert hardware watchpoint %d.", | |
1001 | b->number); | |
1002 | val = -1; | |
1003 | } | |
c5aa993b JM |
1004 | } |
1005 | else | |
1006 | { | |
53a5351d JM |
1007 | printf_filtered ("Hardware watchpoint %d deleted", b->number); |
1008 | printf_filtered ("because the program has left the block \n"); | |
1009 | printf_filtered ("in which its expression is valid.\n"); | |
c5aa993b JM |
1010 | if (b->related_breakpoint) |
1011 | b->related_breakpoint->disposition = del_at_next_stop; | |
1012 | b->disposition = del_at_next_stop; | |
1013 | } | |
c906108c | 1014 | |
c5aa993b JM |
1015 | /* Restore the frame and level. */ |
1016 | if ((saved_frame != selected_frame) || | |
1017 | (saved_level != selected_frame_level)) | |
1018 | select_and_print_frame (saved_frame, saved_level); | |
53a5351d JM |
1019 | |
1020 | if (val) | |
1021 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1022 | } |
1023 | else if ((b->type == bp_catch_fork | |
1024 | || b->type == bp_catch_vfork | |
1025 | || b->type == bp_catch_exec) | |
1026 | && b->enable == enabled | |
1027 | && !b->inserted | |
1028 | && !b->duplicate) | |
1029 | { | |
1030 | val = -1; | |
1031 | switch (b->type) | |
1032 | { | |
1033 | case bp_catch_fork: | |
1034 | val = target_insert_fork_catchpoint (inferior_pid); | |
1035 | break; | |
1036 | case bp_catch_vfork: | |
1037 | val = target_insert_vfork_catchpoint (inferior_pid); | |
1038 | break; | |
1039 | case bp_catch_exec: | |
1040 | val = target_insert_exec_catchpoint (inferior_pid); | |
1041 | break; | |
1042 | default: | |
53a5351d | 1043 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
c5aa993b JM |
1044 | break; |
1045 | } | |
1046 | if (val < 0) | |
1047 | { | |
1048 | target_terminal_ours_for_output (); | |
53a5351d | 1049 | warning ("Cannot insert catchpoint %d.", b->number); |
c5aa993b JM |
1050 | } |
1051 | else | |
1052 | b->inserted = 1; | |
53a5351d JM |
1053 | |
1054 | if (val) | |
1055 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1056 | } |
1057 | } | |
c906108c | 1058 | |
53a5351d | 1059 | return return_val; |
c906108c SS |
1060 | } |
1061 | ||
1062 | ||
1063 | int | |
1064 | remove_breakpoints () | |
1065 | { | |
1066 | register struct breakpoint *b; | |
1067 | int val; | |
1068 | ||
1069 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
1070 | { |
1071 | if (b->inserted) | |
1072 | { | |
1073 | val = remove_breakpoint (b, mark_uninserted); | |
1074 | if (val != 0) | |
1075 | return val; | |
1076 | } | |
1077 | } | |
c906108c SS |
1078 | return 0; |
1079 | } | |
1080 | ||
1081 | int | |
1082 | reattach_breakpoints (pid) | |
c5aa993b | 1083 | int pid; |
c906108c SS |
1084 | { |
1085 | register struct breakpoint *b; | |
1086 | int val; | |
c5aa993b | 1087 | int saved_inferior_pid = inferior_pid; |
c906108c | 1088 | |
53a5351d JM |
1089 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1090 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 1091 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1092 | { |
1093 | if (b->inserted) | |
1094 | { | |
1095 | remove_breakpoint (b, mark_inserted); | |
1096 | if (b->type == bp_hardware_breakpoint) | |
1097 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
1098 | else | |
1099 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
1100 | if (val != 0) | |
1101 | { | |
1102 | inferior_pid = saved_inferior_pid; | |
1103 | return val; | |
1104 | } | |
1105 | } | |
1106 | } | |
c906108c SS |
1107 | inferior_pid = saved_inferior_pid; |
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | void | |
1112 | update_breakpoints_after_exec () | |
1113 | { | |
c5aa993b JM |
1114 | struct breakpoint *b; |
1115 | struct breakpoint *temp; | |
c906108c SS |
1116 | |
1117 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1118 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1119 | shadow is NOT valid after an exec()! */ | |
1120 | mark_breakpoints_out (); | |
1121 | ||
1122 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1123 | { |
1124 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1125 | if (b->type == bp_shlib_event) | |
1126 | { | |
1127 | delete_breakpoint (b); | |
1128 | continue; | |
1129 | } | |
c906108c | 1130 | |
c5aa993b JM |
1131 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1132 | if (b->type == bp_step_resume) | |
1133 | { | |
1134 | delete_breakpoint (b); | |
1135 | continue; | |
1136 | } | |
1137 | ||
1138 | /* Ditto the sigtramp handler breakpoints. */ | |
1139 | if (b->type == bp_through_sigtramp) | |
1140 | { | |
1141 | delete_breakpoint (b); | |
1142 | continue; | |
1143 | } | |
1144 | ||
1145 | /* Ditto the exception-handling catchpoints. */ | |
1146 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1147 | { | |
1148 | delete_breakpoint (b); | |
1149 | continue; | |
1150 | } | |
1151 | ||
1152 | /* Don't delete an exec catchpoint, because else the inferior | |
1153 | won't stop when it ought! | |
1154 | ||
1155 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1156 | on this target, we may not be able to stop when the vfork is |
1157 | seen, but only when the subsequent exec is seen. (And because | |
1158 | deleting fork catchpoints here but not vfork catchpoints will | |
1159 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1160 | |
1161 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1162 | target address field, if any, is sufficient to have it be reset | |
1163 | automagically. Certainly on HP-UX that's true. */ | |
1164 | if ((b->type == bp_catch_exec) || | |
1165 | (b->type == bp_catch_vfork) || | |
1166 | (b->type == bp_catch_fork)) | |
1167 | { | |
1168 | b->address = (CORE_ADDR) NULL; | |
1169 | continue; | |
1170 | } | |
1171 | ||
1172 | /* bp_finish is a special case. The only way we ought to be able | |
1173 | to see one of these when an exec() has happened, is if the user | |
1174 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1175 | carries them to the call-site of the current callee, by setting | |
1176 | a temporary bp there and resuming. But in this case, the finish | |
1177 | will carry them entirely through the vfork & exec. | |
1178 | ||
1179 | We don't want to allow a bp_finish to remain inserted now. But | |
1180 | we can't safely delete it, 'cause finish_command has a handle to | |
1181 | the bp on a bpstat, and will later want to delete it. There's a | |
1182 | chance (and I've seen it happen) that if we delete the bp_finish | |
1183 | here, that its storage will get reused by the time finish_command | |
1184 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1185 | We really must allow finish_command to delete a bp_finish. | |
1186 | ||
53a5351d JM |
1187 | In the absense of a general solution for the "how do we know |
1188 | it's safe to delete something others may have handles to?" | |
1189 | problem, what we'll do here is just uninsert the bp_finish, and | |
1190 | let finish_command delete it. | |
1191 | ||
1192 | (We know the bp_finish is "doomed" in the sense that it's | |
1193 | momentary, and will be deleted as soon as finish_command sees | |
1194 | the inferior stopped. So it doesn't matter that the bp's | |
1195 | address is probably bogus in the new a.out, unlike e.g., the | |
1196 | solib breakpoints.) */ | |
c5aa993b | 1197 | |
c5aa993b JM |
1198 | if (b->type == bp_finish) |
1199 | { | |
1200 | continue; | |
1201 | } | |
1202 | ||
1203 | /* Without a symbolic address, we have little hope of the | |
1204 | pre-exec() address meaning the same thing in the post-exec() | |
1205 | a.out. */ | |
1206 | if (b->addr_string == NULL) | |
1207 | { | |
1208 | delete_breakpoint (b); | |
1209 | continue; | |
1210 | } | |
1211 | ||
1212 | /* If this breakpoint has survived the above battery of checks, then | |
1213 | it must have a symbolic address. Be sure that it gets reevaluated | |
1214 | to a target address, rather than reusing the old evaluation. */ | |
1215 | b->address = (CORE_ADDR) NULL; | |
1216 | } | |
c906108c SS |
1217 | } |
1218 | ||
1219 | int | |
1220 | detach_breakpoints (pid) | |
c5aa993b | 1221 | int pid; |
c906108c SS |
1222 | { |
1223 | register struct breakpoint *b; | |
1224 | int val; | |
c5aa993b JM |
1225 | int saved_inferior_pid = inferior_pid; |
1226 | ||
c906108c SS |
1227 | if (pid == inferior_pid) |
1228 | error ("Cannot detach breakpoints of inferior_pid"); | |
c5aa993b | 1229 | |
53a5351d JM |
1230 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1231 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 1232 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1233 | { |
1234 | if (b->inserted) | |
1235 | { | |
1236 | val = remove_breakpoint (b, mark_inserted); | |
1237 | if (val != 0) | |
1238 | { | |
1239 | inferior_pid = saved_inferior_pid; | |
1240 | return val; | |
1241 | } | |
1242 | } | |
1243 | } | |
c906108c SS |
1244 | inferior_pid = saved_inferior_pid; |
1245 | return 0; | |
1246 | } | |
1247 | ||
1248 | static int | |
1249 | remove_breakpoint (b, is) | |
1250 | struct breakpoint *b; | |
c5aa993b | 1251 | insertion_state_t is; |
c906108c SS |
1252 | { |
1253 | int val; | |
c5aa993b | 1254 | |
c2c6d25f JM |
1255 | if (b->enable == permanent) |
1256 | /* Permanent breakpoints cannot be inserted or removed. */ | |
1257 | return 0; | |
1258 | ||
c906108c | 1259 | if (b->type == bp_none) |
53a5351d JM |
1260 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
1261 | b->number); | |
c906108c SS |
1262 | |
1263 | if (b->type != bp_watchpoint | |
1264 | && b->type != bp_hardware_watchpoint | |
1265 | && b->type != bp_read_watchpoint | |
1266 | && b->type != bp_access_watchpoint | |
1267 | && b->type != bp_catch_fork | |
1268 | && b->type != bp_catch_vfork | |
1269 | && b->type != bp_catch_exec | |
1270 | && b->type != bp_catch_catch | |
1271 | && b->type != bp_catch_throw) | |
c906108c SS |
1272 | { |
1273 | if (b->type == bp_hardware_breakpoint) | |
c5aa993b | 1274 | val = target_remove_hw_breakpoint (b->address, b->shadow_contents); |
c906108c SS |
1275 | else |
1276 | { | |
1277 | /* Check to see if breakpoint is in an overlay section; | |
1278 | if so, we should remove the breakpoint at the LMA address. | |
1279 | If that is not equal to the raw address, then we should | |
1280 | presumable remove the breakpoint there as well. */ | |
c5aa993b | 1281 | if (overlay_debugging && b->section && |
c906108c SS |
1282 | section_is_overlay (b->section)) |
1283 | { | |
1284 | CORE_ADDR addr; | |
1285 | ||
1286 | addr = overlay_unmapped_address (b->address, b->section); | |
1287 | val = target_remove_breakpoint (addr, b->shadow_contents); | |
1288 | /* This would be the time to check val, to see if the | |
c5aa993b JM |
1289 | shadow breakpoint write to the load address succeeded. |
1290 | However, this might be an ordinary occurrance, eg. if | |
1291 | the unmapped overlay is in ROM. */ | |
1292 | val = 0; /* in case unmapped address failed */ | |
c906108c | 1293 | if (section_is_mapped (b->section)) |
c5aa993b | 1294 | val = target_remove_breakpoint (b->address, |
c906108c SS |
1295 | b->shadow_contents); |
1296 | } | |
c5aa993b JM |
1297 | else /* ordinary (non-overlay) address */ |
1298 | val = target_remove_breakpoint (b->address, b->shadow_contents); | |
c906108c SS |
1299 | } |
1300 | if (val) | |
1301 | return val; | |
1302 | b->inserted = (is == mark_inserted); | |
1303 | } | |
1304 | else if ((b->type == bp_hardware_watchpoint || | |
c5aa993b JM |
1305 | b->type == bp_read_watchpoint || |
1306 | b->type == bp_access_watchpoint) | |
c906108c | 1307 | && b->enable == enabled |
c5aa993b | 1308 | && !b->duplicate) |
c906108c SS |
1309 | { |
1310 | value_ptr v, n; | |
c5aa993b | 1311 | |
c906108c SS |
1312 | b->inserted = (is == mark_inserted); |
1313 | /* Walk down the saved value chain. */ | |
1314 | for (v = b->val_chain; v; v = v->next) | |
1315 | { | |
1316 | /* For each memory reference remove the watchpoint | |
1317 | at that address. */ | |
5c44784c JM |
1318 | if (VALUE_LVAL (v) == lval_memory |
1319 | && ! VALUE_LAZY (v)) | |
c906108c | 1320 | { |
2acceee2 JM |
1321 | CORE_ADDR addr; |
1322 | int len, type; | |
c5aa993b | 1323 | |
c906108c SS |
1324 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); |
1325 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
53a5351d | 1326 | type = hw_write; |
c906108c | 1327 | if (b->type == bp_read_watchpoint) |
53a5351d | 1328 | type = hw_read; |
c906108c | 1329 | else if (b->type == bp_access_watchpoint) |
53a5351d | 1330 | type = hw_access; |
c906108c SS |
1331 | |
1332 | val = target_remove_watchpoint (addr, len, type); | |
1333 | if (val == -1) | |
1334 | b->inserted = 1; | |
1335 | val = 0; | |
1336 | } | |
1337 | } | |
1338 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
1339 | if ((is == mark_uninserted) && (b->inserted)) | |
53a5351d | 1340 | warning ("Could not remove hardware watchpoint %d.", |
c906108c | 1341 | b->number); |
c5aa993b | 1342 | |
c906108c | 1343 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1344 | the next time the watchpoint is inserted. */ |
c906108c SS |
1345 | for (v = b->val_chain; v; v = n) |
1346 | { | |
1347 | n = v->next; | |
1348 | value_free (v); | |
1349 | } | |
1350 | b->val_chain = NULL; | |
1351 | } | |
1352 | else if ((b->type == bp_catch_fork || | |
c5aa993b JM |
1353 | b->type == bp_catch_vfork || |
1354 | b->type == bp_catch_exec) | |
c906108c | 1355 | && b->enable == enabled |
c5aa993b | 1356 | && !b->duplicate) |
c906108c SS |
1357 | { |
1358 | val = -1; | |
1359 | switch (b->type) | |
c5aa993b JM |
1360 | { |
1361 | case bp_catch_fork: | |
1362 | val = target_remove_fork_catchpoint (inferior_pid); | |
1363 | break; | |
1364 | case bp_catch_vfork: | |
1365 | val = target_remove_vfork_catchpoint (inferior_pid); | |
1366 | break; | |
1367 | case bp_catch_exec: | |
1368 | val = target_remove_exec_catchpoint (inferior_pid); | |
1369 | break; | |
ac9a91a7 | 1370 | default: |
53a5351d | 1371 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1372 | break; |
c5aa993b | 1373 | } |
c906108c SS |
1374 | if (val) |
1375 | return val; | |
1376 | b->inserted = (is == mark_inserted); | |
1377 | } | |
1378 | else if ((b->type == bp_catch_catch || | |
c5aa993b JM |
1379 | b->type == bp_catch_throw) |
1380 | && b->enable == enabled | |
1381 | && !b->duplicate) | |
c906108c SS |
1382 | { |
1383 | ||
c5aa993b | 1384 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1385 | if (val) |
c5aa993b | 1386 | return val; |
c906108c SS |
1387 | b->inserted = (is == mark_inserted); |
1388 | } | |
1389 | else if (ep_is_exception_catchpoint (b) | |
c5aa993b JM |
1390 | && b->inserted /* sometimes previous insert doesn't happen */ |
1391 | && b->enable == enabled | |
1392 | && !b->duplicate) | |
c906108c SS |
1393 | { |
1394 | ||
c5aa993b | 1395 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1396 | if (val) |
c5aa993b JM |
1397 | return val; |
1398 | ||
c906108c SS |
1399 | b->inserted = (is == mark_inserted); |
1400 | } | |
1401 | ||
1402 | return 0; | |
1403 | } | |
1404 | ||
1405 | /* Clear the "inserted" flag in all breakpoints. */ | |
1406 | ||
1407 | void | |
1408 | mark_breakpoints_out () | |
1409 | { | |
1410 | register struct breakpoint *b; | |
1411 | ||
1412 | ALL_BREAKPOINTS (b) | |
1413 | b->inserted = 0; | |
1414 | } | |
1415 | ||
53a5351d JM |
1416 | /* Clear the "inserted" flag in all breakpoints and delete any |
1417 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1418 | |
1419 | Plus other such housekeeping that has to be done for breakpoints | |
1420 | between runs. | |
1421 | ||
53a5351d JM |
1422 | Note: this function gets called at the end of a run (by |
1423 | generic_mourn_inferior) and when a run begins (by | |
1424 | init_wait_for_inferior). */ | |
c906108c SS |
1425 | |
1426 | ||
1427 | ||
1428 | void | |
1429 | breakpoint_init_inferior (context) | |
c5aa993b | 1430 | enum inf_context context; |
c906108c SS |
1431 | { |
1432 | register struct breakpoint *b, *temp; | |
1433 | static int warning_needed = 0; | |
1434 | ||
1435 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1436 | { |
1437 | b->inserted = 0; | |
c906108c | 1438 | |
c5aa993b JM |
1439 | switch (b->type) |
1440 | { | |
1441 | case bp_call_dummy: | |
1442 | case bp_watchpoint_scope: | |
c906108c | 1443 | |
c5aa993b JM |
1444 | /* If the call dummy breakpoint is at the entry point it will |
1445 | cause problems when the inferior is rerun, so we better | |
1446 | get rid of it. | |
c906108c | 1447 | |
c5aa993b JM |
1448 | Also get rid of scope breakpoints. */ |
1449 | delete_breakpoint (b); | |
1450 | break; | |
c906108c | 1451 | |
c5aa993b JM |
1452 | case bp_watchpoint: |
1453 | case bp_hardware_watchpoint: | |
1454 | case bp_read_watchpoint: | |
1455 | case bp_access_watchpoint: | |
c906108c | 1456 | |
c5aa993b JM |
1457 | /* Likewise for watchpoints on local expressions. */ |
1458 | if (b->exp_valid_block != NULL) | |
1459 | delete_breakpoint (b); | |
1460 | break; | |
1461 | default: | |
1462 | /* Likewise for exception catchpoints in dynamic-linked | |
1463 | executables where required */ | |
1464 | if (ep_is_exception_catchpoint (b) && | |
1465 | exception_catchpoints_are_fragile) | |
1466 | { | |
1467 | warning_needed = 1; | |
c906108c | 1468 | delete_breakpoint (b); |
c5aa993b JM |
1469 | } |
1470 | break; | |
1471 | } | |
1472 | } | |
c906108c SS |
1473 | |
1474 | if (exception_catchpoints_are_fragile) | |
1475 | exception_support_initialized = 0; | |
1476 | ||
c5aa993b | 1477 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1478 | if (warning_needed && (context != inf_exited)) |
1479 | { | |
53a5351d JM |
1480 | warning ("Exception catchpoints from last run were deleted."); |
1481 | warning ("You must reinsert them explicitly."); | |
c906108c | 1482 | warning_needed = 0; |
c5aa993b | 1483 | } |
c906108c SS |
1484 | } |
1485 | ||
c2c6d25f JM |
1486 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1487 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1488 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1489 | permanent breakpoint. | |
1490 | - When continuing from a location with an ordinary breakpoint, we | |
1491 | actually single step once before calling insert_breakpoints. | |
1492 | - When continuing from a localion with a permanent breakpoint, we | |
1493 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1494 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1495 | |
c2c6d25f | 1496 | enum breakpoint_here |
c906108c SS |
1497 | breakpoint_here_p (pc) |
1498 | CORE_ADDR pc; | |
1499 | { | |
1500 | register struct breakpoint *b; | |
c2c6d25f | 1501 | int any_breakpoint_here = 0; |
c906108c SS |
1502 | |
1503 | ALL_BREAKPOINTS (b) | |
c2c6d25f JM |
1504 | if ((b->enable == enabled |
1505 | || b->enable == permanent) | |
c906108c | 1506 | && b->address == pc) /* bp is enabled and matches pc */ |
c2c6d25f JM |
1507 | { |
1508 | if (overlay_debugging && | |
1509 | section_is_overlay (b->section) && | |
1510 | !section_is_mapped (b->section)) | |
1511 | continue; /* unmapped overlay -- can't be a match */ | |
1512 | else if (b->enable == permanent) | |
1513 | return permanent_breakpoint_here; | |
1514 | else | |
1515 | any_breakpoint_here = 1; | |
1516 | } | |
c906108c | 1517 | |
c2c6d25f | 1518 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1519 | } |
1520 | ||
c2c6d25f | 1521 | |
53a5351d JM |
1522 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1523 | but it only returns true if there is actually a breakpoint inserted | |
1524 | at PC. */ | |
c906108c SS |
1525 | |
1526 | int | |
1527 | breakpoint_inserted_here_p (pc) | |
1528 | CORE_ADDR pc; | |
1529 | { | |
1530 | register struct breakpoint *b; | |
1531 | ||
1532 | ALL_BREAKPOINTS (b) | |
1533 | if (b->inserted | |
1534 | && b->address == pc) /* bp is inserted and matches pc */ | |
c5aa993b JM |
1535 | { |
1536 | if (overlay_debugging && | |
1537 | section_is_overlay (b->section) && | |
1538 | !section_is_mapped (b->section)) | |
1539 | continue; /* unmapped overlay -- can't be a match */ | |
1540 | else | |
1541 | return 1; | |
1542 | } | |
c906108c SS |
1543 | |
1544 | return 0; | |
1545 | } | |
1546 | ||
53a5351d JM |
1547 | /* Return nonzero if FRAME is a dummy frame. We can't use |
1548 | PC_IN_CALL_DUMMY because figuring out the saved SP would take too | |
1549 | much time, at least using get_saved_register on the 68k. This | |
1550 | means that for this function to work right a port must use the | |
1551 | bp_call_dummy breakpoint. */ | |
c906108c SS |
1552 | |
1553 | int | |
1554 | frame_in_dummy (frame) | |
1555 | struct frame_info *frame; | |
1556 | { | |
c906108c SS |
1557 | struct breakpoint *b; |
1558 | ||
c5aa993b | 1559 | if (!CALL_DUMMY_P) |
7a292a7a SS |
1560 | return 0; |
1561 | ||
1562 | if (USE_GENERIC_DUMMY_FRAMES) | |
1563 | return generic_pc_in_call_dummy (frame->pc, frame->frame, frame->frame); | |
c5aa993b | 1564 | |
c906108c | 1565 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1566 | { |
1567 | if (b->type == bp_call_dummy | |
1568 | && b->frame == frame->frame | |
1569 | /* We need to check the PC as well as the frame on the sparc, | |
1570 | for signals.exp in the testsuite. */ | |
1571 | && (frame->pc | |
1572 | >= (b->address | |
1573 | - SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE)) | |
1574 | && frame->pc <= b->address) | |
1575 | return 1; | |
1576 | } | |
c906108c SS |
1577 | return 0; |
1578 | } | |
1579 | ||
1580 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC | |
1581 | is valid for process/thread PID. */ | |
1582 | ||
1583 | int | |
1584 | breakpoint_thread_match (pc, pid) | |
1585 | CORE_ADDR pc; | |
1586 | int pid; | |
1587 | { | |
1588 | struct breakpoint *b; | |
1589 | int thread; | |
1590 | ||
1591 | thread = pid_to_thread_id (pid); | |
1592 | ||
1593 | ALL_BREAKPOINTS (b) | |
1594 | if (b->enable != disabled | |
1595 | && b->enable != shlib_disabled | |
1596 | && b->enable != call_disabled | |
1597 | && b->address == pc | |
1598 | && (b->thread == -1 || b->thread == thread)) | |
c5aa993b JM |
1599 | { |
1600 | if (overlay_debugging && | |
1601 | section_is_overlay (b->section) && | |
1602 | !section_is_mapped (b->section)) | |
1603 | continue; /* unmapped overlay -- can't be a match */ | |
1604 | else | |
1605 | return 1; | |
1606 | } | |
c906108c SS |
1607 | |
1608 | return 0; | |
1609 | } | |
c906108c | 1610 | \f |
c5aa993b | 1611 | |
c906108c SS |
1612 | /* bpstat stuff. External routines' interfaces are documented |
1613 | in breakpoint.h. */ | |
1614 | ||
1615 | int | |
1616 | ep_is_catchpoint (ep) | |
c5aa993b | 1617 | struct breakpoint *ep; |
c906108c SS |
1618 | { |
1619 | return | |
1620 | (ep->type == bp_catch_load) | |
1621 | || (ep->type == bp_catch_unload) | |
1622 | || (ep->type == bp_catch_fork) | |
1623 | || (ep->type == bp_catch_vfork) | |
1624 | || (ep->type == bp_catch_exec) | |
1625 | || (ep->type == bp_catch_catch) | |
1626 | || (ep->type == bp_catch_throw) | |
1627 | ||
1628 | ||
c5aa993b | 1629 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c SS |
1630 | ; |
1631 | } | |
c5aa993b | 1632 | |
c906108c SS |
1633 | int |
1634 | ep_is_shlib_catchpoint (ep) | |
c5aa993b | 1635 | struct breakpoint *ep; |
c906108c SS |
1636 | { |
1637 | return | |
1638 | (ep->type == bp_catch_load) | |
1639 | || (ep->type == bp_catch_unload) | |
1640 | ; | |
1641 | } | |
1642 | ||
1643 | int | |
1644 | ep_is_exception_catchpoint (ep) | |
c5aa993b | 1645 | struct breakpoint *ep; |
c906108c SS |
1646 | { |
1647 | return | |
1648 | (ep->type == bp_catch_catch) | |
1649 | || (ep->type == bp_catch_throw) | |
1650 | ; | |
1651 | } | |
1652 | ||
1653 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1654 | Also free any storage that is part of a bpstat. */ | |
1655 | ||
1656 | void | |
1657 | bpstat_clear (bsp) | |
1658 | bpstat *bsp; | |
1659 | { | |
1660 | bpstat p; | |
1661 | bpstat q; | |
1662 | ||
1663 | if (bsp == 0) | |
1664 | return; | |
1665 | p = *bsp; | |
1666 | while (p != NULL) | |
1667 | { | |
1668 | q = p->next; | |
1669 | if (p->old_val != NULL) | |
1670 | value_free (p->old_val); | |
c5aa993b | 1671 | free ((PTR) p); |
c906108c SS |
1672 | p = q; |
1673 | } | |
1674 | *bsp = NULL; | |
1675 | } | |
1676 | ||
1677 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1678 | is part of the bpstat is copied as well. */ | |
1679 | ||
1680 | bpstat | |
1681 | bpstat_copy (bs) | |
1682 | bpstat bs; | |
1683 | { | |
1684 | bpstat p = NULL; | |
1685 | bpstat tmp; | |
1686 | bpstat retval = NULL; | |
1687 | ||
1688 | if (bs == NULL) | |
1689 | return bs; | |
1690 | ||
1691 | for (; bs != NULL; bs = bs->next) | |
1692 | { | |
1693 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1694 | memcpy (tmp, bs, sizeof (*tmp)); | |
1695 | if (p == NULL) | |
1696 | /* This is the first thing in the chain. */ | |
1697 | retval = tmp; | |
1698 | else | |
1699 | p->next = tmp; | |
1700 | p = tmp; | |
1701 | } | |
1702 | p->next = NULL; | |
1703 | return retval; | |
1704 | } | |
1705 | ||
1706 | /* Find the bpstat associated with this breakpoint */ | |
1707 | ||
1708 | bpstat | |
c5aa993b | 1709 | bpstat_find_breakpoint (bsp, breakpoint) |
c906108c SS |
1710 | bpstat bsp; |
1711 | struct breakpoint *breakpoint; | |
1712 | { | |
c5aa993b JM |
1713 | if (bsp == NULL) |
1714 | return NULL; | |
c906108c | 1715 | |
c5aa993b JM |
1716 | for (; bsp != NULL; bsp = bsp->next) |
1717 | { | |
1718 | if (bsp->breakpoint_at == breakpoint) | |
1719 | return bsp; | |
1720 | } | |
c906108c SS |
1721 | return NULL; |
1722 | } | |
1723 | ||
1724 | /* Find a step_resume breakpoint associated with this bpstat. | |
1725 | (If there are multiple step_resume bp's on the list, this function | |
1726 | will arbitrarily pick one.) | |
1727 | ||
1728 | It is an error to use this function if BPSTAT doesn't contain a | |
1729 | step_resume breakpoint. | |
1730 | ||
1731 | See wait_for_inferior's use of this function. */ | |
1732 | struct breakpoint * | |
1733 | bpstat_find_step_resume_breakpoint (bsp) | |
c5aa993b | 1734 | bpstat bsp; |
c906108c SS |
1735 | { |
1736 | if (bsp == NULL) | |
1737 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1738 | ||
1739 | for (; bsp != NULL; bsp = bsp->next) | |
1740 | { | |
1741 | if ((bsp->breakpoint_at != NULL) && | |
c5aa993b JM |
1742 | (bsp->breakpoint_at->type == bp_step_resume)) |
1743 | return bsp->breakpoint_at; | |
c906108c SS |
1744 | } |
1745 | ||
1746 | error ("Internal error (no step_resume breakpoint found)"); | |
1747 | } | |
1748 | ||
1749 | ||
1750 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1751 | at. *BSP upon return is a bpstat which points to the remaining | |
1752 | breakpoints stopped at (but which is not guaranteed to be good for | |
1753 | anything but further calls to bpstat_num). | |
1754 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1755 | ||
1756 | int | |
1757 | bpstat_num (bsp) | |
1758 | bpstat *bsp; | |
1759 | { | |
1760 | struct breakpoint *b; | |
1761 | ||
1762 | if ((*bsp) == NULL) | |
1763 | return 0; /* No more breakpoint values */ | |
1764 | else | |
1765 | { | |
1766 | b = (*bsp)->breakpoint_at; | |
1767 | *bsp = (*bsp)->next; | |
1768 | if (b == NULL) | |
1769 | return -1; /* breakpoint that's been deleted since */ | |
1770 | else | |
c5aa993b | 1771 | return b->number; /* We have its number */ |
c906108c SS |
1772 | } |
1773 | } | |
1774 | ||
1775 | /* Modify BS so that the actions will not be performed. */ | |
1776 | ||
1777 | void | |
1778 | bpstat_clear_actions (bs) | |
1779 | bpstat bs; | |
1780 | { | |
1781 | for (; bs != NULL; bs = bs->next) | |
1782 | { | |
1783 | bs->commands = NULL; | |
1784 | if (bs->old_val != NULL) | |
1785 | { | |
1786 | value_free (bs->old_val); | |
1787 | bs->old_val = NULL; | |
1788 | } | |
1789 | } | |
1790 | } | |
1791 | ||
1792 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1793 | /* ARGSUSED */ | |
1794 | static void | |
1795 | cleanup_executing_breakpoints (ignore) | |
1796 | PTR ignore; | |
1797 | { | |
1798 | executing_breakpoint_commands = 0; | |
1799 | } | |
1800 | ||
1801 | /* Execute all the commands associated with all the breakpoints at this | |
1802 | location. Any of these commands could cause the process to proceed | |
1803 | beyond this point, etc. We look out for such changes by checking | |
1804 | the global "breakpoint_proceeded" after each command. */ | |
1805 | ||
1806 | void | |
1807 | bpstat_do_actions (bsp) | |
1808 | bpstat *bsp; | |
1809 | { | |
1810 | bpstat bs; | |
1811 | struct cleanup *old_chain; | |
1812 | struct command_line *cmd; | |
1813 | ||
1814 | /* Avoid endless recursion if a `source' command is contained | |
1815 | in bs->commands. */ | |
1816 | if (executing_breakpoint_commands) | |
1817 | return; | |
1818 | ||
1819 | executing_breakpoint_commands = 1; | |
1820 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1821 | ||
1822 | top: | |
1823 | /* Note that (as of this writing), our callers all appear to | |
1824 | be passing us the address of global stop_bpstat. And, if | |
1825 | our calls to execute_control_command cause the inferior to | |
1826 | proceed, that global (and hence, *bsp) will change. | |
1827 | ||
1828 | We must be careful to not touch *bsp unless the inferior | |
1829 | has not proceeded. */ | |
1830 | ||
1831 | /* This pointer will iterate over the list of bpstat's. */ | |
1832 | bs = *bsp; | |
1833 | ||
1834 | breakpoint_proceeded = 0; | |
1835 | for (; bs != NULL; bs = bs->next) | |
1836 | { | |
1837 | cmd = bs->commands; | |
1838 | while (cmd != NULL) | |
1839 | { | |
1840 | execute_control_command (cmd); | |
1841 | ||
1842 | if (breakpoint_proceeded) | |
1843 | break; | |
1844 | else | |
1845 | cmd = cmd->next; | |
1846 | } | |
1847 | if (breakpoint_proceeded) | |
1848 | /* The inferior is proceeded by the command; bomb out now. | |
1849 | The bpstat chain has been blown away by wait_for_inferior. | |
1850 | But since execution has stopped again, there is a new bpstat | |
1851 | to look at, so start over. */ | |
1852 | goto top; | |
1853 | else | |
1854 | bs->commands = NULL; | |
1855 | } | |
1856 | ||
1857 | executing_breakpoint_commands = 0; | |
1858 | discard_cleanups (old_chain); | |
1859 | } | |
1860 | ||
e514a9d6 | 1861 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 1862 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
1863 | by having it set different print_it values. |
1864 | ||
1865 | Current scheme: When we stop, bpstat_print() is called. It loops | |
1866 | through the bpstat list of things causing this stop, calling the | |
1867 | print_bp_stop_message function on each one. The behavior of the | |
1868 | print_bp_stop_message function depends on the print_it field of | |
1869 | bpstat. If such field so indicates, call this function here. | |
1870 | ||
1871 | Return values from this routine (ultimately used by bpstat_print() | |
1872 | and normal_stop() to decide what to do): | |
1873 | PRINT_NOTHING: Means we already printed all we needed to print, | |
1874 | don't print anything else. | |
1875 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
1876 | that something to be followed by a location. | |
1877 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
1878 | that something to be followed by a location. | |
1879 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
1880 | analysis. */ | |
c906108c | 1881 | |
917317f4 | 1882 | static enum print_stop_action |
e514a9d6 | 1883 | print_it_typical (bs) |
c906108c SS |
1884 | bpstat bs; |
1885 | { | |
1886 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
1887 | which has since been deleted. */ | |
e514a9d6 | 1888 | if (bs->breakpoint_at == NULL) |
917317f4 | 1889 | return PRINT_UNKNOWN; |
c906108c | 1890 | |
e514a9d6 | 1891 | switch (bs->breakpoint_at->type) |
c906108c | 1892 | { |
e514a9d6 JM |
1893 | case bp_breakpoint: |
1894 | case bp_hardware_breakpoint: | |
1895 | /* I think the user probably only wants to see one breakpoint | |
1896 | number, not all of them. */ | |
1897 | annotate_breakpoint (bs->breakpoint_at->number); | |
1898 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); | |
917317f4 | 1899 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1900 | break; |
1901 | ||
1902 | case bp_shlib_event: | |
917317f4 JM |
1903 | /* Did we stop because the user set the stop_on_solib_events |
1904 | variable? (If so, we report this as a generic, "Stopped due | |
1905 | to shlib event" message.) */ | |
e514a9d6 JM |
1906 | printf_filtered ("Stopped due to shared library event\n"); |
1907 | return PRINT_NOTHING; | |
1908 | break; | |
1909 | ||
1910 | case bp_catch_load: | |
c906108c SS |
1911 | annotate_catchpoint (bs->breakpoint_at->number); |
1912 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
1913 | printf_filtered ("loaded"); |
1914 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1915 | return PRINT_SRC_AND_LOC; | |
1916 | break; | |
1917 | ||
1918 | case bp_catch_unload: | |
1919 | annotate_catchpoint (bs->breakpoint_at->number); | |
1920 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1921 | printf_filtered ("unloaded"); | |
1922 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1923 | return PRINT_SRC_AND_LOC; | |
1924 | break; | |
1925 | ||
1926 | case bp_catch_fork: | |
1927 | annotate_catchpoint (bs->breakpoint_at->number); | |
1928 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1929 | printf_filtered ("forked"); | |
53a5351d JM |
1930 | printf_filtered (" process %d), ", |
1931 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 1932 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1933 | break; |
1934 | ||
1935 | case bp_catch_vfork: | |
1936 | annotate_catchpoint (bs->breakpoint_at->number); | |
1937 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1938 | printf_filtered ("vforked"); | |
1939 | printf_filtered (" process %d), ", | |
1940 | bs->breakpoint_at->forked_inferior_pid); | |
1941 | return PRINT_SRC_AND_LOC; | |
1942 | break; | |
1943 | ||
1944 | case bp_catch_exec: | |
c906108c SS |
1945 | annotate_catchpoint (bs->breakpoint_at->number); |
1946 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
1947 | bs->breakpoint_at->number, |
1948 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 1949 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1950 | break; |
1951 | ||
1952 | case bp_catch_catch: | |
53a5351d JM |
1953 | if (current_exception_event && |
1954 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
1955 | { |
1956 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1957 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
1958 | bs->breakpoint_at->number); | |
c5aa993b JM |
1959 | printf_filtered ("throw location "); |
1960 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1961 | printf_filtered ("%s:%d", | |
1962 | CURRENT_EXCEPTION_THROW_FILE, | |
1963 | CURRENT_EXCEPTION_THROW_LINE); | |
1964 | else | |
1965 | printf_filtered ("unknown"); | |
1966 | ||
1967 | printf_filtered (", catch location "); | |
1968 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1969 | printf_filtered ("%s:%d", | |
1970 | CURRENT_EXCEPTION_CATCH_FILE, | |
1971 | CURRENT_EXCEPTION_CATCH_LINE); | |
1972 | else | |
1973 | printf_filtered ("unknown"); | |
1974 | ||
1975 | printf_filtered ("\n"); | |
e514a9d6 JM |
1976 | /* don't bother to print location frame info */ |
1977 | return PRINT_SRC_ONLY; | |
c5aa993b | 1978 | } |
c906108c | 1979 | else |
c5aa993b | 1980 | { |
e514a9d6 JM |
1981 | /* really throw, some other bpstat will handle it */ |
1982 | return PRINT_UNKNOWN; | |
c5aa993b | 1983 | } |
e514a9d6 JM |
1984 | break; |
1985 | ||
1986 | case bp_catch_throw: | |
53a5351d JM |
1987 | if (current_exception_event && |
1988 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
1989 | { |
1990 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1991 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
1992 | bs->breakpoint_at->number); | |
c5aa993b JM |
1993 | printf_filtered ("throw location "); |
1994 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1995 | printf_filtered ("%s:%d", | |
1996 | CURRENT_EXCEPTION_THROW_FILE, | |
1997 | CURRENT_EXCEPTION_THROW_LINE); | |
1998 | else | |
1999 | printf_filtered ("unknown"); | |
2000 | ||
2001 | printf_filtered (", catch location "); | |
2002 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2003 | printf_filtered ("%s:%d", | |
2004 | CURRENT_EXCEPTION_CATCH_FILE, | |
2005 | CURRENT_EXCEPTION_CATCH_LINE); | |
2006 | else | |
2007 | printf_filtered ("unknown"); | |
2008 | ||
2009 | printf_filtered ("\n"); | |
e514a9d6 JM |
2010 | /* don't bother to print location frame info */ |
2011 | return PRINT_SRC_ONLY; | |
c5aa993b | 2012 | } |
c906108c | 2013 | else |
c5aa993b | 2014 | { |
e514a9d6 JM |
2015 | /* really catch, some other bpstat will handle it */ |
2016 | return PRINT_UNKNOWN; | |
c5aa993b | 2017 | } |
e514a9d6 | 2018 | break; |
c906108c | 2019 | |
e514a9d6 JM |
2020 | case bp_watchpoint: |
2021 | case bp_hardware_watchpoint: | |
2022 | if (bs->old_val != NULL) | |
2023 | { | |
2024 | annotate_watchpoint (bs->breakpoint_at->number); | |
2025 | mention (bs->breakpoint_at); | |
2026 | printf_filtered ("\nOld value = "); | |
2027 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2028 | printf_filtered ("\nNew value = "); | |
2029 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
2030 | Val_pretty_default); | |
2031 | printf_filtered ("\n"); | |
2032 | value_free (bs->old_val); | |
2033 | bs->old_val = NULL; | |
2034 | } | |
2035 | /* More than one watchpoint may have been triggered. */ | |
2036 | return PRINT_UNKNOWN; | |
2037 | break; | |
2038 | ||
2039 | case bp_read_watchpoint: | |
c906108c | 2040 | mention (bs->breakpoint_at); |
e514a9d6 | 2041 | printf_filtered ("\nValue = "); |
c906108c SS |
2042 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
2043 | Val_pretty_default); | |
2044 | printf_filtered ("\n"); | |
917317f4 | 2045 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2046 | break; |
2047 | ||
2048 | case bp_access_watchpoint: | |
2049 | if (bs->old_val != NULL) | |
2050 | { | |
2051 | annotate_watchpoint (bs->breakpoint_at->number); | |
2052 | mention (bs->breakpoint_at); | |
2053 | printf_filtered ("\nOld value = "); | |
2054 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2055 | value_free (bs->old_val); | |
2056 | bs->old_val = NULL; | |
2057 | printf_filtered ("\nNew value = "); | |
2058 | } | |
2059 | else | |
2060 | { | |
2061 | mention (bs->breakpoint_at); | |
2062 | printf_filtered ("\nValue = "); | |
2063 | } | |
c906108c | 2064 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
c5aa993b | 2065 | Val_pretty_default); |
c906108c | 2066 | printf_filtered ("\n"); |
917317f4 | 2067 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2068 | break; |
2069 | /* Fall through, we don't deal with these types of breakpoints | |
2070 | here. */ | |
2071 | ||
11cf8741 | 2072 | case bp_finish: |
e514a9d6 JM |
2073 | case bp_none: |
2074 | case bp_until: | |
e514a9d6 JM |
2075 | case bp_longjmp: |
2076 | case bp_longjmp_resume: | |
2077 | case bp_step_resume: | |
2078 | case bp_through_sigtramp: | |
2079 | case bp_watchpoint_scope: | |
2080 | case bp_call_dummy: | |
2081 | default: | |
2082 | return PRINT_UNKNOWN; | |
2083 | } | |
2084 | } | |
2085 | ||
2086 | /* Generic routine for printing messages indicating why we | |
2087 | stopped. The behavior of this function depends on the value | |
2088 | 'print_it' in the bpstat structure. Under some circumstances we | |
2089 | may decide not to print anything here and delegate the task to | |
2090 | normal_stop(). */ | |
2091 | ||
2092 | static enum print_stop_action | |
2093 | print_bp_stop_message (bpstat bs) | |
2094 | { | |
2095 | switch (bs->print_it) | |
2096 | { | |
2097 | case print_it_noop: | |
2098 | /* Nothing should be printed for this bpstat entry. */ | |
2099 | return PRINT_UNKNOWN; | |
2100 | break; | |
2101 | ||
2102 | case print_it_done: | |
2103 | /* We still want to print the frame, but we already printed the | |
2104 | relevant messages. */ | |
2105 | return PRINT_SRC_AND_LOC; | |
2106 | break; | |
2107 | ||
2108 | case print_it_normal: | |
2109 | /* Normal case, we handle everything in print_it_typical. */ | |
2110 | return print_it_typical (bs); | |
2111 | break; | |
2112 | default: | |
2113 | internal_error ("print_bp_stop_message: unrecognized enum value"); | |
2114 | break; | |
c906108c | 2115 | } |
c906108c SS |
2116 | } |
2117 | ||
e514a9d6 JM |
2118 | /* Print a message indicating what happened. This is called from |
2119 | normal_stop(). The input to this routine is the head of the bpstat | |
2120 | list - a list of the eventpoints that caused this stop. This | |
2121 | routine calls the generic print routine for printing a message | |
2122 | about reasons for stopping. This will print (for example) the | |
2123 | "Breakpoint n," part of the output. The return value of this | |
2124 | routine is one of: | |
c906108c | 2125 | |
917317f4 JM |
2126 | PRINT_UNKNOWN: Means we printed nothing |
2127 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2128 | code to print the location. An example is |
2129 | "Breakpoint 1, " which should be followed by | |
2130 | the location. | |
917317f4 | 2131 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2132 | to also print the location part of the message. |
2133 | An example is the catch/throw messages, which | |
917317f4 JM |
2134 | don't require a location appended to the end. |
2135 | PRINT_NOTHING: We have done some printing and we don't need any | |
2136 | further info to be printed.*/ | |
c906108c | 2137 | |
917317f4 | 2138 | enum print_stop_action |
c906108c SS |
2139 | bpstat_print (bs) |
2140 | bpstat bs; | |
2141 | { | |
2142 | int val; | |
c5aa993b | 2143 | |
c906108c | 2144 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2145 | (Currently all watchpoints go on the bpstat whether hit or not. |
2146 | That probably could (should) be changed, provided care is taken | |
c906108c | 2147 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2148 | for (; bs; bs = bs->next) |
2149 | { | |
2150 | val = print_bp_stop_message (bs); | |
2151 | if (val == PRINT_SRC_ONLY | |
2152 | || val == PRINT_SRC_AND_LOC | |
2153 | || val == PRINT_NOTHING) | |
2154 | return val; | |
2155 | } | |
c906108c | 2156 | |
e514a9d6 JM |
2157 | /* We reached the end of the chain, or we got a null BS to start |
2158 | with and nothing was printed. */ | |
917317f4 | 2159 | return PRINT_UNKNOWN; |
c906108c SS |
2160 | } |
2161 | ||
2162 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2163 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2164 | The argument is a "struct expression *" that has been cast to char * to | |
2165 | make it pass through catch_errors. */ | |
2166 | ||
2167 | static int | |
2168 | breakpoint_cond_eval (exp) | |
2169 | PTR exp; | |
2170 | { | |
2171 | value_ptr mark = value_mark (); | |
c5aa993b | 2172 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2173 | value_free_to_mark (mark); |
2174 | return i; | |
2175 | } | |
2176 | ||
2177 | /* Allocate a new bpstat and chain it to the current one. */ | |
2178 | ||
2179 | static bpstat | |
2180 | bpstat_alloc (b, cbs) | |
2181 | register struct breakpoint *b; | |
c5aa993b | 2182 | bpstat cbs; /* Current "bs" value */ |
c906108c SS |
2183 | { |
2184 | bpstat bs; | |
2185 | ||
2186 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2187 | cbs->next = bs; | |
2188 | bs->breakpoint_at = b; | |
2189 | /* If the condition is false, etc., don't do the commands. */ | |
2190 | bs->commands = NULL; | |
2191 | bs->old_val = NULL; | |
2192 | bs->print_it = print_it_normal; | |
2193 | return bs; | |
2194 | } | |
2195 | \f | |
2196 | /* Possible return values for watchpoint_check (this can't be an enum | |
2197 | because of check_errors). */ | |
2198 | /* The watchpoint has been deleted. */ | |
2199 | #define WP_DELETED 1 | |
2200 | /* The value has changed. */ | |
2201 | #define WP_VALUE_CHANGED 2 | |
2202 | /* The value has not changed. */ | |
2203 | #define WP_VALUE_NOT_CHANGED 3 | |
2204 | ||
2205 | #define BP_TEMPFLAG 1 | |
2206 | #define BP_HARDWAREFLAG 2 | |
2207 | ||
2208 | /* Check watchpoint condition. */ | |
2209 | ||
2210 | static int | |
2211 | watchpoint_check (p) | |
2212 | PTR p; | |
2213 | { | |
2214 | bpstat bs = (bpstat) p; | |
2215 | struct breakpoint *b; | |
2216 | struct frame_info *fr; | |
2217 | int within_current_scope; | |
2218 | ||
2219 | b = bs->breakpoint_at; | |
2220 | ||
2221 | if (b->exp_valid_block == NULL) | |
2222 | within_current_scope = 1; | |
2223 | else | |
2224 | { | |
2225 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2226 | any chance of handling watchpoints on local variables, we'll need |
2227 | the frame chain (so we can determine if we're in scope). */ | |
2228 | reinit_frame_cache (); | |
c906108c SS |
2229 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
2230 | within_current_scope = (fr != NULL); | |
2231 | if (within_current_scope) | |
2232 | /* If we end up stopping, the current frame will get selected | |
2233 | in normal_stop. So this call to select_frame won't affect | |
2234 | the user. */ | |
2235 | select_frame (fr, -1); | |
2236 | } | |
c5aa993b | 2237 | |
c906108c SS |
2238 | if (within_current_scope) |
2239 | { | |
2240 | /* We use value_{,free_to_}mark because it could be a | |
2241 | *long* time before we return to the command level and | |
c5aa993b JM |
2242 | call free_all_values. We can't call free_all_values because |
2243 | we might be in the middle of evaluating a function call. */ | |
c906108c SS |
2244 | |
2245 | value_ptr mark = value_mark (); | |
2246 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
2247 | if (!value_equal (b->val, new_val)) | |
2248 | { | |
2249 | release_value (new_val); | |
2250 | value_free_to_mark (mark); | |
2251 | bs->old_val = b->val; | |
2252 | b->val = new_val; | |
2253 | /* We will stop here */ | |
2254 | return WP_VALUE_CHANGED; | |
2255 | } | |
2256 | else | |
2257 | { | |
2258 | /* Nothing changed, don't do anything. */ | |
2259 | value_free_to_mark (mark); | |
2260 | /* We won't stop here */ | |
2261 | return WP_VALUE_NOT_CHANGED; | |
2262 | } | |
2263 | } | |
2264 | else | |
2265 | { | |
2266 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2267 | if we temporarily ignored the watchpoint, then when |
2268 | we reenter the block in which it is valid it contains | |
2269 | garbage (in the case of a function, it may have two | |
2270 | garbage values, one before and one after the prologue). | |
2271 | So we can't even detect the first assignment to it and | |
2272 | watch after that (since the garbage may or may not equal | |
2273 | the first value assigned). */ | |
c906108c SS |
2274 | printf_filtered ("\ |
2275 | Watchpoint %d deleted because the program has left the block in\n\ | |
2276 | which its expression is valid.\n", bs->breakpoint_at->number); | |
2277 | if (b->related_breakpoint) | |
2278 | b->related_breakpoint->disposition = del_at_next_stop; | |
2279 | b->disposition = del_at_next_stop; | |
2280 | ||
2281 | return WP_DELETED; | |
2282 | } | |
2283 | } | |
2284 | ||
c906108c SS |
2285 | /* Get a bpstat associated with having just stopped at address *PC |
2286 | and frame address CORE_ADDRESS. Update *PC to point at the | |
2287 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
2288 | if this is known to not be a real breakpoint (it could still be a | |
2289 | watchpoint, though). */ | |
2290 | ||
2291 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2292 | don't understand this stop. Result is a chain of bpstat's such that: | |
2293 | ||
c5aa993b | 2294 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2295 | |
c5aa993b | 2296 | if we understand why we stopped, the result is not null. |
c906108c | 2297 | |
c5aa993b JM |
2298 | Each element of the chain refers to a particular breakpoint or |
2299 | watchpoint at which we have stopped. (We may have stopped for | |
2300 | several reasons concurrently.) | |
c906108c | 2301 | |
c5aa993b JM |
2302 | Each element of the chain has valid next, breakpoint_at, |
2303 | commands, FIXME??? fields. */ | |
c906108c SS |
2304 | |
2305 | bpstat | |
2306 | bpstat_stop_status (pc, not_a_breakpoint) | |
2307 | CORE_ADDR *pc; | |
2308 | int not_a_breakpoint; | |
2309 | { | |
2310 | register struct breakpoint *b, *temp; | |
2311 | CORE_ADDR bp_addr; | |
2312 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2313 | int real_breakpoint = 0; | |
2314 | /* Root of the chain of bpstat's */ | |
2315 | struct bpstats root_bs[1]; | |
2316 | /* Pointer to the last thing in the chain currently. */ | |
2317 | bpstat bs = root_bs; | |
2318 | static char message1[] = | |
c5aa993b JM |
2319 | "Error evaluating expression for watchpoint %d\n"; |
2320 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c SS |
2321 | |
2322 | /* Get the address where the breakpoint would have been. */ | |
6426a772 JM |
2323 | bp_addr = *pc - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P ? |
2324 | 0 : DECR_PC_AFTER_BREAK); | |
c906108c SS |
2325 | |
2326 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
2327 | { |
2328 | if (b->enable == disabled | |
2329 | || b->enable == shlib_disabled | |
2330 | || b->enable == call_disabled) | |
2331 | continue; | |
2332 | ||
2333 | if (b->type != bp_watchpoint | |
2334 | && b->type != bp_hardware_watchpoint | |
2335 | && b->type != bp_read_watchpoint | |
2336 | && b->type != bp_access_watchpoint | |
2337 | && b->type != bp_hardware_breakpoint | |
2338 | && b->type != bp_catch_fork | |
2339 | && b->type != bp_catch_vfork | |
2340 | && b->type != bp_catch_exec | |
2341 | && b->type != bp_catch_catch | |
2342 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
2343 | if (b->address != bp_addr || /* address doesn't match or */ | |
2344 | (overlay_debugging && /* overlay doesn't match */ | |
2345 | section_is_overlay (b->section) && | |
2346 | !section_is_mapped (b->section))) | |
c906108c SS |
2347 | continue; |
2348 | ||
c5aa993b JM |
2349 | if (b->type == bp_hardware_breakpoint |
2350 | && b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2351 | continue; | |
2352 | ||
c5aa993b JM |
2353 | /* Is this a catchpoint of a load or unload? If so, did we |
2354 | get a load or unload of the specified library? If not, | |
2355 | ignore it. */ | |
2356 | if ((b->type == bp_catch_load) | |
c906108c | 2357 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
c5aa993b JM |
2358 | && (!SOLIB_HAVE_LOAD_EVENT (inferior_pid) |
2359 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2360 | && (strcmp (b->dll_pathname, |
2361 | SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2362 | != 0))) | |
c906108c | 2363 | #endif |
c5aa993b JM |
2364 | ) |
2365 | continue; | |
2366 | ||
2367 | if ((b->type == bp_catch_unload) | |
c906108c | 2368 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
c5aa993b JM |
2369 | && (!SOLIB_HAVE_UNLOAD_EVENT (inferior_pid) |
2370 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2371 | && (strcmp (b->dll_pathname, |
2372 | SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2373 | != 0))) | |
c906108c | 2374 | #endif |
c5aa993b JM |
2375 | ) |
2376 | continue; | |
c906108c | 2377 | |
c5aa993b JM |
2378 | if ((b->type == bp_catch_fork) |
2379 | && !target_has_forked (inferior_pid, &b->forked_inferior_pid)) | |
2380 | continue; | |
c906108c | 2381 | |
c5aa993b JM |
2382 | if ((b->type == bp_catch_vfork) |
2383 | && !target_has_vforked (inferior_pid, &b->forked_inferior_pid)) | |
2384 | continue; | |
c906108c | 2385 | |
c5aa993b JM |
2386 | if ((b->type == bp_catch_exec) |
2387 | && !target_has_execd (inferior_pid, &b->exec_pathname)) | |
2388 | continue; | |
c906108c | 2389 | |
c5aa993b JM |
2390 | if (ep_is_exception_catchpoint (b) && |
2391 | !(current_exception_event = target_get_current_exception_event ())) | |
2392 | continue; | |
c906108c | 2393 | |
c5aa993b JM |
2394 | /* Come here if it's a watchpoint, or if the break address matches */ |
2395 | ||
2396 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2397 | ||
2398 | /* Watchpoints may change this, if not found to have triggered. */ | |
2399 | bs->stop = 1; | |
2400 | bs->print = 1; | |
2401 | ||
2402 | sprintf (message, message1, b->number); | |
53a5351d JM |
2403 | if (b->type == bp_watchpoint || |
2404 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2405 | { |
53a5351d JM |
2406 | switch (catch_errors (watchpoint_check, bs, message, |
2407 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2408 | { |
2409 | case WP_DELETED: | |
2410 | /* We've already printed what needs to be printed. */ | |
2411 | bs->print_it = print_it_done; | |
2412 | /* Stop. */ | |
2413 | break; | |
2414 | case WP_VALUE_CHANGED: | |
2415 | /* Stop. */ | |
2416 | ++(b->hit_count); | |
2417 | break; | |
2418 | case WP_VALUE_NOT_CHANGED: | |
2419 | /* Don't stop. */ | |
2420 | bs->print_it = print_it_noop; | |
2421 | bs->stop = 0; | |
2422 | /* Don't consider this a hit. */ | |
2423 | --(b->hit_count); | |
2424 | continue; | |
2425 | default: | |
2426 | /* Can't happen. */ | |
2427 | /* FALLTHROUGH */ | |
2428 | case 0: | |
2429 | /* Error from catch_errors. */ | |
2430 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2431 | if (b->related_breakpoint) | |
2432 | b->related_breakpoint->disposition = del_at_next_stop; | |
2433 | b->disposition = del_at_next_stop; | |
2434 | /* We've already printed what needs to be printed. */ | |
2435 | bs->print_it = print_it_done; | |
2436 | ||
2437 | /* Stop. */ | |
2438 | break; | |
2439 | } | |
2440 | } | |
53a5351d JM |
2441 | else if (b->type == bp_read_watchpoint || |
2442 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2443 | { |
2444 | CORE_ADDR addr; | |
2445 | value_ptr v; | |
2446 | int found = 0; | |
2447 | ||
2448 | addr = target_stopped_data_address (); | |
2449 | if (addr == 0) | |
2450 | continue; | |
2451 | for (v = b->val_chain; v; v = v->next) | |
2452 | { | |
5c44784c JM |
2453 | if (VALUE_LVAL (v) == lval_memory |
2454 | && ! VALUE_LAZY (v)) | |
c5aa993b JM |
2455 | { |
2456 | CORE_ADDR vaddr; | |
2457 | ||
2458 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
53a5351d JM |
2459 | /* Exact match not required. Within range is sufficient. |
2460 | */ | |
2461 | if (addr >= vaddr && | |
2462 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
c5aa993b JM |
2463 | found = 1; |
2464 | } | |
2465 | } | |
2466 | if (found) | |
53a5351d JM |
2467 | switch (catch_errors (watchpoint_check, bs, message, |
2468 | RETURN_MASK_ALL)) | |
c906108c SS |
2469 | { |
2470 | case WP_DELETED: | |
2471 | /* We've already printed what needs to be printed. */ | |
2472 | bs->print_it = print_it_done; | |
2473 | /* Stop. */ | |
2474 | break; | |
2475 | case WP_VALUE_CHANGED: | |
c5aa993b | 2476 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2477 | /* Stop. */ |
2478 | ++(b->hit_count); | |
2479 | break; | |
c906108c SS |
2480 | default: |
2481 | /* Can't happen. */ | |
c906108c SS |
2482 | case 0: |
2483 | /* Error from catch_errors. */ | |
2484 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2485 | if (b->related_breakpoint) | |
2486 | b->related_breakpoint->disposition = del_at_next_stop; | |
2487 | b->disposition = del_at_next_stop; | |
2488 | /* We've already printed what needs to be printed. */ | |
2489 | bs->print_it = print_it_done; | |
c906108c SS |
2490 | break; |
2491 | } | |
53a5351d JM |
2492 | else /* found == 0 */ |
2493 | { | |
2494 | /* This is a case where some watchpoint(s) triggered, | |
2495 | but not at the address of this watchpoint (FOUND | |
2496 | was left zero). So don't print anything for this | |
2497 | watchpoint. */ | |
2498 | bs->print_it = print_it_noop; | |
2499 | bs->stop = 0; | |
2500 | continue; | |
2501 | } | |
c5aa993b JM |
2502 | } |
2503 | else | |
2504 | { | |
2505 | /* By definition, an encountered breakpoint is a triggered | |
2506 | breakpoint. */ | |
2507 | ++(b->hit_count); | |
c906108c | 2508 | |
c5aa993b JM |
2509 | real_breakpoint = 1; |
2510 | } | |
2511 | ||
2512 | if (b->frame && b->frame != (get_current_frame ())->frame && | |
2513 | (b->type == bp_step_resume && | |
2514 | (INNER_THAN (get_current_frame ()->frame, b->frame)))) | |
2515 | bs->stop = 0; | |
2516 | else | |
2517 | { | |
2518 | int value_is_zero = 0; | |
2519 | ||
2520 | if (b->cond) | |
2521 | { | |
2522 | /* Need to select the frame, with all that implies | |
2523 | so that the conditions will have the right context. */ | |
2524 | select_frame (get_current_frame (), 0); | |
2525 | value_is_zero | |
2526 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2527 | "Error in testing breakpoint condition:\n", | |
2528 | RETURN_MASK_ALL); | |
2529 | /* FIXME-someday, should give breakpoint # */ | |
2530 | free_all_values (); | |
2531 | } | |
2532 | if (b->cond && value_is_zero) | |
2533 | { | |
2534 | bs->stop = 0; | |
2535 | /* Don't consider this a hit. */ | |
2536 | --(b->hit_count); | |
2537 | } | |
2538 | else if (b->ignore_count > 0) | |
2539 | { | |
2540 | b->ignore_count--; | |
5c44784c | 2541 | annotate_ignore_count_change (); |
c5aa993b JM |
2542 | bs->stop = 0; |
2543 | } | |
2544 | else | |
2545 | { | |
2546 | /* We will stop here */ | |
2547 | if (b->disposition == disable) | |
2548 | b->enable = disabled; | |
2549 | bs->commands = b->commands; | |
2550 | if (b->silent) | |
2551 | bs->print = 0; | |
2552 | if (bs->commands && | |
2553 | (STREQ ("silent", bs->commands->line) || | |
2554 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2555 | { | |
2556 | bs->commands = bs->commands->next; | |
c906108c | 2557 | bs->print = 0; |
c5aa993b JM |
2558 | } |
2559 | } | |
2560 | } | |
2561 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2562 | if (bs->stop == 0 || bs->print == 0) | |
2563 | bs->print_it = print_it_noop; | |
2564 | } | |
c906108c SS |
2565 | |
2566 | bs->next = NULL; /* Terminate the chain */ | |
2567 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2568 | ||
2569 | if (real_breakpoint && bs) | |
2570 | { | |
c5aa993b | 2571 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2572 | { |
c5aa993b | 2573 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2574 | { |
2575 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2576 | write_pc (*pc); | |
2577 | } | |
2578 | } | |
2579 | else | |
2580 | { | |
2581 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2582 | { | |
2583 | *pc = bp_addr; | |
2584 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2585 | SHIFT_INST_REGS (); |
c906108c SS |
2586 | #else /* No SHIFT_INST_REGS. */ |
2587 | write_pc (bp_addr); | |
2588 | #endif /* No SHIFT_INST_REGS. */ | |
2589 | } | |
2590 | } | |
2591 | } | |
2592 | ||
2593 | /* The value of a hardware watchpoint hasn't changed, but the | |
2594 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2595 | if (bs && !bs->stop && |
c906108c SS |
2596 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2597 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2598 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2599 | { | |
2600 | remove_breakpoints (); | |
2601 | insert_breakpoints (); | |
2602 | } | |
2603 | return bs; | |
2604 | } | |
2605 | \f | |
2606 | /* Tell what to do about this bpstat. */ | |
2607 | struct bpstat_what | |
2608 | bpstat_what (bs) | |
2609 | bpstat bs; | |
2610 | { | |
2611 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2612 | enum class |
2613 | { | |
2614 | /* This bpstat element has no effect on the main_action. */ | |
2615 | no_effect = 0, | |
2616 | ||
2617 | /* There was a watchpoint, stop but don't print. */ | |
2618 | wp_silent, | |
c906108c | 2619 | |
c5aa993b JM |
2620 | /* There was a watchpoint, stop and print. */ |
2621 | wp_noisy, | |
c906108c | 2622 | |
c5aa993b JM |
2623 | /* There was a breakpoint but we're not stopping. */ |
2624 | bp_nostop, | |
c906108c | 2625 | |
c5aa993b JM |
2626 | /* There was a breakpoint, stop but don't print. */ |
2627 | bp_silent, | |
c906108c | 2628 | |
c5aa993b JM |
2629 | /* There was a breakpoint, stop and print. */ |
2630 | bp_noisy, | |
c906108c | 2631 | |
c5aa993b JM |
2632 | /* We hit the longjmp breakpoint. */ |
2633 | long_jump, | |
c906108c | 2634 | |
c5aa993b JM |
2635 | /* We hit the longjmp_resume breakpoint. */ |
2636 | long_resume, | |
c906108c | 2637 | |
c5aa993b JM |
2638 | /* We hit the step_resume breakpoint. */ |
2639 | step_resume, | |
c906108c | 2640 | |
c5aa993b JM |
2641 | /* We hit the through_sigtramp breakpoint. */ |
2642 | through_sig, | |
c906108c | 2643 | |
c5aa993b JM |
2644 | /* We hit the shared library event breakpoint. */ |
2645 | shlib_event, | |
c906108c | 2646 | |
c5aa993b JM |
2647 | /* We caught a shared library event. */ |
2648 | catch_shlib_event, | |
c906108c | 2649 | |
c5aa993b JM |
2650 | /* This is just used to count how many enums there are. */ |
2651 | class_last | |
c906108c SS |
2652 | }; |
2653 | ||
2654 | /* Here is the table which drives this routine. So that we can | |
2655 | format it pretty, we define some abbreviations for the | |
2656 | enum bpstat_what codes. */ | |
2657 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2658 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2659 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2660 | #define sgl BPSTAT_WHAT_SINGLE | |
2661 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2662 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2663 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2664 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2665 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2666 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2667 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2668 | ||
2669 | /* "Can't happen." Might want to print an error message. | |
2670 | abort() is not out of the question, but chances are GDB is just | |
2671 | a bit confused, not unusable. */ | |
2672 | #define err BPSTAT_WHAT_STOP_NOISY | |
2673 | ||
2674 | /* Given an old action and a class, come up with a new action. */ | |
2675 | /* One interesting property of this table is that wp_silent is the same | |
2676 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2677 | after stopping, the check for whether to step over a breakpoint | |
2678 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2679 | reference to how we stopped. We retain separate wp_silent and |
2680 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2681 | |
2682 | Another possibly interesting property of this table is that | |
2683 | there's a partial ordering, priority-like, of the actions. Once | |
2684 | you've decided that some action is appropriate, you'll never go | |
2685 | back and decide something of a lower priority is better. The | |
2686 | ordering is: | |
2687 | ||
c5aa993b JM |
2688 | kc < clr sgl shl slr sn sr ss ts |
2689 | sgl < clrs shl shlr slr sn sr ss ts | |
2690 | slr < err shl shlr sn sr ss ts | |
2691 | clr < clrs err shl shlr sn sr ss ts | |
2692 | clrs < err shl shlr sn sr ss ts | |
2693 | ss < shl shlr sn sr ts | |
2694 | sn < shl shlr sr ts | |
2695 | sr < shl shlr ts | |
2696 | shl < shlr | |
2697 | ts < | |
2698 | shlr < | |
2699 | ||
43ff13b4 JM |
2700 | What I think this means is that we don't need a damned table |
2701 | here. If you just put the rows and columns in the right order, | |
2702 | it'd look awfully regular. We could simply walk the bpstat list | |
2703 | and choose the highest priority action we find, with a little | |
2704 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2705 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2706 | is messy anyway). */ | |
c906108c SS |
2707 | |
2708 | /* step_resume entries: a step resume breakpoint overrides another | |
2709 | breakpoint of signal handling (see comment in wait_for_inferior | |
2710 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
2711 | /* We handle the through_sigtramp_breakpoint the same way; having both | |
2712 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2713 | ||
2714 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2715 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2716 | { | |
2717 | /* old action */ | |
2718 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2719 | */ | |
2720 | /*no_effect */ | |
2721 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2722 | /*wp_silent */ | |
2723 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2724 | /*wp_noisy */ | |
2725 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2726 | /*bp_nostop */ | |
2727 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2728 | /*bp_silent */ | |
2729 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2730 | /*bp_noisy */ | |
2731 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2732 | /*long_jump */ | |
2733 | {slr, ss, sn, slr, err, err, err, sr, ts, shl, shlr}, | |
2734 | /*long_resume */ | |
2735 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2736 | /*step_resume */ | |
2737 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2738 | /*through_sig */ | |
2739 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2740 | /*shlib */ | |
2741 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2742 | /*catch_shlib */ | |
2743 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2744 | }; | |
c906108c SS |
2745 | |
2746 | #undef kc | |
2747 | #undef ss | |
2748 | #undef sn | |
2749 | #undef sgl | |
2750 | #undef slr | |
2751 | #undef clr | |
2752 | #undef clrs | |
2753 | #undef err | |
2754 | #undef sr | |
2755 | #undef ts | |
2756 | #undef shl | |
2757 | #undef shlr | |
2758 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2759 | struct bpstat_what retval; | |
2760 | ||
2761 | retval.call_dummy = 0; | |
2762 | for (; bs != NULL; bs = bs->next) | |
2763 | { | |
2764 | enum class bs_class = no_effect; | |
2765 | if (bs->breakpoint_at == NULL) | |
2766 | /* I suspect this can happen if it was a momentary breakpoint | |
2767 | which has since been deleted. */ | |
2768 | continue; | |
2769 | switch (bs->breakpoint_at->type) | |
2770 | { | |
2771 | case bp_none: | |
2772 | continue; | |
2773 | ||
2774 | case bp_breakpoint: | |
2775 | case bp_hardware_breakpoint: | |
2776 | case bp_until: | |
2777 | case bp_finish: | |
2778 | if (bs->stop) | |
2779 | { | |
2780 | if (bs->print) | |
2781 | bs_class = bp_noisy; | |
2782 | else | |
2783 | bs_class = bp_silent; | |
2784 | } | |
2785 | else | |
2786 | bs_class = bp_nostop; | |
2787 | break; | |
2788 | case bp_watchpoint: | |
2789 | case bp_hardware_watchpoint: | |
2790 | case bp_read_watchpoint: | |
2791 | case bp_access_watchpoint: | |
2792 | if (bs->stop) | |
2793 | { | |
2794 | if (bs->print) | |
2795 | bs_class = wp_noisy; | |
2796 | else | |
2797 | bs_class = wp_silent; | |
2798 | } | |
2799 | else | |
53a5351d JM |
2800 | /* There was a watchpoint, but we're not stopping. |
2801 | This requires no further action. */ | |
c906108c SS |
2802 | bs_class = no_effect; |
2803 | break; | |
2804 | case bp_longjmp: | |
2805 | bs_class = long_jump; | |
2806 | break; | |
2807 | case bp_longjmp_resume: | |
2808 | bs_class = long_resume; | |
2809 | break; | |
2810 | case bp_step_resume: | |
2811 | if (bs->stop) | |
2812 | { | |
2813 | bs_class = step_resume; | |
2814 | } | |
2815 | else | |
2816 | /* It is for the wrong frame. */ | |
2817 | bs_class = bp_nostop; | |
2818 | break; | |
2819 | case bp_through_sigtramp: | |
2820 | bs_class = through_sig; | |
2821 | break; | |
2822 | case bp_watchpoint_scope: | |
2823 | bs_class = bp_nostop; | |
2824 | break; | |
c5aa993b JM |
2825 | case bp_shlib_event: |
2826 | bs_class = shlib_event; | |
2827 | break; | |
2828 | case bp_catch_load: | |
2829 | case bp_catch_unload: | |
2830 | /* Only if this catchpoint triggered should we cause the | |
2831 | step-out-of-dld behaviour. Otherwise, we ignore this | |
2832 | catchpoint. */ | |
2833 | if (bs->stop) | |
2834 | bs_class = catch_shlib_event; | |
2835 | else | |
2836 | bs_class = no_effect; | |
2837 | break; | |
2838 | case bp_catch_fork: | |
2839 | case bp_catch_vfork: | |
2840 | case bp_catch_exec: | |
2841 | if (bs->stop) | |
2842 | { | |
2843 | if (bs->print) | |
2844 | bs_class = bp_noisy; | |
2845 | else | |
2846 | bs_class = bp_silent; | |
2847 | } | |
2848 | else | |
53a5351d JM |
2849 | /* There was a catchpoint, but we're not stopping. |
2850 | This requires no further action. */ | |
c5aa993b JM |
2851 | bs_class = no_effect; |
2852 | break; | |
2853 | case bp_catch_catch: | |
2854 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
2855 | bs_class = bp_nostop; | |
2856 | else if (bs->stop) | |
2857 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2858 | break; | |
2859 | case bp_catch_throw: | |
2860 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
2861 | bs_class = bp_nostop; | |
2862 | else if (bs->stop) | |
2863 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 2864 | break; |
c906108c | 2865 | case bp_call_dummy: |
53a5351d JM |
2866 | /* Make sure the action is stop (silent or noisy), |
2867 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
2868 | bs_class = bp_silent; |
2869 | retval.call_dummy = 1; | |
2870 | break; | |
2871 | } | |
c5aa993b | 2872 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
2873 | } |
2874 | retval.main_action = current_action; | |
2875 | return retval; | |
2876 | } | |
2877 | ||
2878 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
2879 | without hardware support). This isn't related to a specific bpstat, | |
2880 | just to things like whether watchpoints are set. */ | |
2881 | ||
c5aa993b | 2882 | int |
c906108c SS |
2883 | bpstat_should_step () |
2884 | { | |
2885 | struct breakpoint *b; | |
2886 | ALL_BREAKPOINTS (b) | |
2887 | if (b->enable == enabled && b->type == bp_watchpoint) | |
c5aa993b | 2888 | return 1; |
c906108c SS |
2889 | return 0; |
2890 | } | |
2891 | ||
2892 | /* Nonzero if there are enabled hardware watchpoints. */ | |
2893 | int | |
2894 | bpstat_have_active_hw_watchpoints () | |
2895 | { | |
2896 | struct breakpoint *b; | |
2897 | ALL_BREAKPOINTS (b) | |
2898 | if ((b->enable == enabled) && | |
c5aa993b JM |
2899 | (b->inserted) && |
2900 | ((b->type == bp_hardware_watchpoint) || | |
2901 | (b->type == bp_read_watchpoint) || | |
2902 | (b->type == bp_access_watchpoint))) | |
2903 | return 1; | |
c906108c SS |
2904 | return 0; |
2905 | } | |
c906108c | 2906 | \f |
c5aa993b | 2907 | |
c906108c SS |
2908 | /* Given a bpstat that records zero or more triggered eventpoints, this |
2909 | function returns another bpstat which contains only the catchpoints | |
2910 | on that first list, if any. */ | |
2911 | void | |
2912 | bpstat_get_triggered_catchpoints (ep_list, cp_list) | |
c5aa993b JM |
2913 | bpstat ep_list; |
2914 | bpstat *cp_list; | |
2915 | { | |
2916 | struct bpstats root_bs[1]; | |
2917 | bpstat bs = root_bs; | |
2918 | struct breakpoint *ep; | |
2919 | char *dll_pathname; | |
2920 | ||
c906108c SS |
2921 | bpstat_clear (cp_list); |
2922 | root_bs->next = NULL; | |
c5aa993b JM |
2923 | |
2924 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
2925 | { |
2926 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
2927 | ep = ep_list->breakpoint_at; | |
2928 | if (ep == NULL) | |
c5aa993b JM |
2929 | break; |
2930 | if ((ep->type != bp_catch_load) && | |
2931 | (ep->type != bp_catch_unload) && | |
2932 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
2933 | (ep->type != bp_catch_throw)) |
2934 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
2935 | continue; |
2936 | ||
c906108c SS |
2937 | /* Yes; add it to the list. */ |
2938 | bs = bpstat_alloc (ep, bs); | |
2939 | *bs = *ep_list; | |
2940 | bs->next = NULL; | |
2941 | bs = root_bs->next; | |
c5aa993b | 2942 | |
c906108c SS |
2943 | #if defined(SOLIB_ADD) |
2944 | /* Also, for each triggered catchpoint, tag it with the name of | |
2945 | the library that caused this trigger. (We copy the name now, | |
2946 | because it's only guaranteed to be available NOW, when the | |
2947 | catchpoint triggers. Clients who may wish to know the name | |
2948 | later must get it from the catchpoint itself.) */ | |
2949 | if (ep->triggered_dll_pathname != NULL) | |
c5aa993b | 2950 | free (ep->triggered_dll_pathname); |
c906108c | 2951 | if (ep->type == bp_catch_load) |
c5aa993b | 2952 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c | 2953 | else |
c5aa993b | 2954 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c SS |
2955 | #else |
2956 | dll_pathname = NULL; | |
2957 | #endif | |
2958 | if (dll_pathname) | |
2959 | { | |
53a5351d JM |
2960 | ep->triggered_dll_pathname = (char *) |
2961 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
2962 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
2963 | } | |
2964 | else | |
2965 | ep->triggered_dll_pathname = NULL; | |
2966 | } | |
c5aa993b | 2967 | |
c906108c SS |
2968 | *cp_list = bs; |
2969 | } | |
2970 | ||
2971 | /* Print information on breakpoint number BNUM, or -1 if all. | |
2972 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
2973 | is nonzero, process only watchpoints. */ | |
2974 | ||
c5aa993b JM |
2975 | typedef struct |
2976 | { | |
2977 | enum bptype type; | |
2978 | char *description; | |
2979 | } | |
2980 | ep_type_description_t; | |
c906108c SS |
2981 | |
2982 | static void | |
2983 | breakpoint_1 (bnum, allflag) | |
2984 | int bnum; | |
2985 | int allflag; | |
2986 | { | |
2987 | register struct breakpoint *b; | |
2988 | register struct command_line *l; | |
2989 | register struct symbol *sym; | |
2acceee2 | 2990 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
c906108c | 2991 | int found_a_breakpoint = 0; |
c5aa993b | 2992 | static ep_type_description_t bptypes[] = |
c906108c | 2993 | { |
c5aa993b JM |
2994 | {bp_none, "?deleted?"}, |
2995 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 2996 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
2997 | {bp_until, "until"}, |
2998 | {bp_finish, "finish"}, | |
2999 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3000 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3001 | {bp_read_watchpoint, "read watchpoint"}, |
3002 | {bp_access_watchpoint, "acc watchpoint"}, | |
3003 | {bp_longjmp, "longjmp"}, | |
3004 | {bp_longjmp_resume, "longjmp resume"}, | |
3005 | {bp_step_resume, "step resume"}, | |
3006 | {bp_through_sigtramp, "sigtramp"}, | |
3007 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3008 | {bp_call_dummy, "call dummy"}, | |
3009 | {bp_shlib_event, "shlib events"}, | |
3010 | {bp_catch_load, "catch load"}, | |
3011 | {bp_catch_unload, "catch unload"}, | |
3012 | {bp_catch_fork, "catch fork"}, | |
3013 | {bp_catch_vfork, "catch vfork"}, | |
3014 | {bp_catch_exec, "catch exec"}, | |
3015 | {bp_catch_catch, "catch catch"}, | |
3016 | {bp_catch_throw, "catch throw"} | |
3017 | }; | |
3018 | ||
3019 | static char *bpdisps[] = | |
3020 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3021 | static char bpenables[] = "nynny"; |
c906108c SS |
3022 | char wrap_indent[80]; |
3023 | ||
392a587b | 3024 | |
53a5351d | 3025 | |
c906108c SS |
3026 | ALL_BREAKPOINTS (b) |
3027 | if (bnum == -1 | |
3028 | || bnum == b->number) | |
c5aa993b | 3029 | { |
c906108c | 3030 | /* We only print out user settable breakpoints unless the allflag is set. */ |
c5aa993b JM |
3031 | if (!allflag |
3032 | && b->type != bp_breakpoint | |
3033 | && b->type != bp_catch_load | |
3034 | && b->type != bp_catch_unload | |
3035 | && b->type != bp_catch_fork | |
3036 | && b->type != bp_catch_vfork | |
3037 | && b->type != bp_catch_exec | |
3038 | && b->type != bp_catch_catch | |
3039 | && b->type != bp_catch_throw | |
3040 | && b->type != bp_hardware_breakpoint | |
3041 | && b->type != bp_watchpoint | |
3042 | && b->type != bp_read_watchpoint | |
3043 | && b->type != bp_access_watchpoint | |
3044 | && b->type != bp_hardware_watchpoint) | |
3045 | continue; | |
c906108c | 3046 | |
c5aa993b JM |
3047 | if (!found_a_breakpoint++) |
3048 | { | |
3049 | annotate_breakpoints_headers (); | |
3050 | ||
3051 | annotate_field (0); | |
3052 | printf_filtered ("Num "); | |
3053 | annotate_field (1); | |
3054 | printf_filtered ("Type "); | |
3055 | annotate_field (2); | |
3056 | printf_filtered ("Disp "); | |
3057 | annotate_field (3); | |
3058 | printf_filtered ("Enb "); | |
3059 | if (addressprint) | |
3060 | { | |
3061 | annotate_field (4); | |
3062 | printf_filtered ("Address "); | |
3063 | } | |
3064 | annotate_field (5); | |
3065 | printf_filtered ("What\n"); | |
c906108c | 3066 | |
c5aa993b JM |
3067 | annotate_breakpoints_table (); |
3068 | } | |
c906108c | 3069 | |
c5aa993b JM |
3070 | annotate_record (); |
3071 | annotate_field (0); | |
3072 | printf_filtered ("%-3d ", b->number); | |
3073 | annotate_field (1); | |
3074 | if ((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3075 | error ("bptypes table does not describe type #%d.", (int) b->type); | |
3076 | if ((int) b->type != bptypes[(int) b->type].type) | |
3077 | error ("bptypes table does not describe type #%d?", (int) b->type); | |
3078 | printf_filtered ("%-14s ", bptypes[(int) b->type].description); | |
3079 | annotate_field (2); | |
3080 | printf_filtered ("%-4s ", bpdisps[(int) b->disposition]); | |
3081 | annotate_field (3); | |
3082 | printf_filtered ("%-3c ", bpenables[(int) b->enable]); | |
3083 | ||
3084 | strcpy (wrap_indent, " "); | |
3085 | if (addressprint) | |
3086 | strcat (wrap_indent, " "); | |
3087 | switch (b->type) | |
3088 | { | |
3089 | case bp_watchpoint: | |
3090 | case bp_hardware_watchpoint: | |
3091 | case bp_read_watchpoint: | |
3092 | case bp_access_watchpoint: | |
3093 | /* Field 4, the address, is omitted (which makes the columns | |
3094 | not line up too nicely with the headers, but the effect | |
3095 | is relatively readable). */ | |
3096 | annotate_field (5); | |
3097 | print_expression (b->exp, gdb_stdout); | |
3098 | break; | |
c906108c | 3099 | |
c5aa993b JM |
3100 | case bp_catch_load: |
3101 | case bp_catch_unload: | |
3102 | /* Field 4, the address, is omitted (which makes the columns | |
3103 | not line up too nicely with the headers, but the effect | |
3104 | is relatively readable). */ | |
3105 | annotate_field (5); | |
3106 | if (b->dll_pathname == NULL) | |
3107 | printf_filtered ("<any library> "); | |
3108 | else | |
3109 | printf_filtered ("library \"%s\" ", b->dll_pathname); | |
3110 | break; | |
c906108c | 3111 | |
c5aa993b JM |
3112 | case bp_catch_fork: |
3113 | case bp_catch_vfork: | |
3114 | /* Field 4, the address, is omitted (which makes the columns | |
3115 | not line up too nicely with the headers, but the effect | |
3116 | is relatively readable). */ | |
3117 | annotate_field (5); | |
3118 | if (b->forked_inferior_pid != 0) | |
3119 | printf_filtered ("process %d ", b->forked_inferior_pid); | |
3120 | break; | |
c906108c | 3121 | |
c5aa993b JM |
3122 | case bp_catch_exec: |
3123 | /* Field 4, the address, is omitted (which makes the columns | |
3124 | not line up too nicely with the headers, but the effect | |
3125 | is relatively readable). */ | |
3126 | annotate_field (5); | |
3127 | if (b->exec_pathname != NULL) | |
3128 | printf_filtered ("program \"%s\" ", b->exec_pathname); | |
3129 | break; | |
3130 | case bp_catch_catch: | |
3131 | /* Field 4, the address, is omitted (which makes the columns | |
3132 | not line up too nicely with the headers, but the effect | |
3133 | is relatively readable). */ | |
3134 | annotate_field (5); | |
3135 | printf_filtered ("exception catch "); | |
3136 | break; | |
3137 | case bp_catch_throw: | |
3138 | /* Field 4, the address, is omitted (which makes the columns | |
3139 | not line up too nicely with the headers, but the effect | |
3140 | is relatively readable). */ | |
3141 | annotate_field (5); | |
3142 | printf_filtered ("exception throw "); | |
3143 | break; | |
c906108c | 3144 | |
c5aa993b JM |
3145 | case bp_breakpoint: |
3146 | case bp_hardware_breakpoint: | |
3147 | case bp_until: | |
3148 | case bp_finish: | |
3149 | case bp_longjmp: | |
3150 | case bp_longjmp_resume: | |
3151 | case bp_step_resume: | |
3152 | case bp_through_sigtramp: | |
3153 | case bp_watchpoint_scope: | |
3154 | case bp_call_dummy: | |
3155 | case bp_shlib_event: | |
3156 | if (addressprint) | |
3157 | { | |
3158 | annotate_field (4); | |
3159 | /* FIXME-32x64: need a print_address_numeric with | |
3160 | field width */ | |
3161 | printf_filtered | |
3162 | ("%s ", | |
3163 | local_hex_string_custom | |
3164 | ((unsigned long) b->address, "08l")); | |
3165 | } | |
c906108c | 3166 | |
c5aa993b | 3167 | annotate_field (5); |
c906108c | 3168 | |
c5aa993b JM |
3169 | last_addr = b->address; |
3170 | if (b->source_file) | |
3171 | { | |
3172 | sym = find_pc_sect_function (b->address, b->section); | |
3173 | if (sym) | |
3174 | { | |
3175 | fputs_filtered ("in ", gdb_stdout); | |
3176 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
3177 | wrap_here (wrap_indent); | |
3178 | fputs_filtered (" at ", gdb_stdout); | |
3179 | } | |
3180 | fputs_filtered (b->source_file, gdb_stdout); | |
3181 | printf_filtered (":%d", b->line_number); | |
3182 | } | |
3183 | else | |
3184 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); | |
3185 | break; | |
3186 | } | |
c906108c | 3187 | |
c5aa993b JM |
3188 | if (b->thread != -1) |
3189 | printf_filtered (" thread %d", b->thread); | |
c906108c | 3190 | |
c5aa993b | 3191 | printf_filtered ("\n"); |
c906108c | 3192 | |
c5aa993b JM |
3193 | if (b->frame) |
3194 | { | |
3195 | annotate_field (6); | |
c906108c | 3196 | |
c5aa993b JM |
3197 | printf_filtered ("\tstop only in stack frame at "); |
3198 | print_address_numeric (b->frame, 1, gdb_stdout); | |
3199 | printf_filtered ("\n"); | |
3200 | } | |
c906108c | 3201 | |
c5aa993b JM |
3202 | if (b->cond) |
3203 | { | |
3204 | annotate_field (7); | |
c906108c | 3205 | |
c5aa993b JM |
3206 | printf_filtered ("\tstop only if "); |
3207 | print_expression (b->cond, gdb_stdout); | |
3208 | printf_filtered ("\n"); | |
3209 | } | |
3210 | ||
3211 | if (b->thread != -1) | |
3212 | { | |
3213 | /* FIXME should make an annotation for this */ | |
3214 | printf_filtered ("\tstop only in thread %d\n", b->thread); | |
3215 | } | |
3216 | ||
3217 | if (show_breakpoint_hit_counts && b->hit_count) | |
3218 | { | |
3219 | /* FIXME should make an annotation for this */ | |
3220 | if (ep_is_catchpoint (b)) | |
3221 | printf_filtered ("\tcatchpoint"); | |
3222 | else | |
3223 | printf_filtered ("\tbreakpoint"); | |
3224 | printf_filtered (" already hit %d time%s\n", | |
3225 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
3226 | } | |
3227 | ||
3228 | if (b->ignore_count) | |
3229 | { | |
3230 | annotate_field (8); | |
3231 | ||
3232 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
3233 | } | |
3234 | ||
3235 | if ((l = b->commands)) | |
3236 | { | |
3237 | annotate_field (9); | |
3238 | ||
3239 | while (l) | |
3240 | { | |
3241 | print_command_line (l, 4, gdb_stdout); | |
3242 | l = l->next; | |
3243 | } | |
3244 | } | |
3245 | } | |
c906108c SS |
3246 | |
3247 | if (!found_a_breakpoint) | |
3248 | { | |
3249 | if (bnum == -1) | |
c5aa993b | 3250 | printf_filtered ("No breakpoints or watchpoints.\n"); |
c906108c | 3251 | else |
c5aa993b | 3252 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); |
c906108c SS |
3253 | } |
3254 | else | |
3255 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3256 | that a comparison of an unsigned with -1 is always false. */ | |
2acceee2 | 3257 | if (last_addr != (CORE_ADDR) -1) |
c5aa993b | 3258 | set_next_address (last_addr); |
c906108c SS |
3259 | |
3260 | annotate_breakpoints_table_end (); | |
3261 | } | |
3262 | ||
3263 | /* ARGSUSED */ | |
3264 | static void | |
3265 | breakpoints_info (bnum_exp, from_tty) | |
3266 | char *bnum_exp; | |
3267 | int from_tty; | |
3268 | { | |
3269 | int bnum = -1; | |
3270 | ||
3271 | if (bnum_exp) | |
3272 | bnum = parse_and_eval_address (bnum_exp); | |
3273 | ||
3274 | breakpoint_1 (bnum, 0); | |
3275 | } | |
3276 | ||
c906108c | 3277 | /* ARGSUSED */ |
7a292a7a | 3278 | static void |
c906108c SS |
3279 | maintenance_info_breakpoints (bnum_exp, from_tty) |
3280 | char *bnum_exp; | |
3281 | int from_tty; | |
3282 | { | |
3283 | int bnum = -1; | |
3284 | ||
3285 | if (bnum_exp) | |
3286 | bnum = parse_and_eval_address (bnum_exp); | |
3287 | ||
3288 | breakpoint_1 (bnum, 1); | |
3289 | } | |
3290 | ||
c906108c SS |
3291 | /* Print a message describing any breakpoints set at PC. */ |
3292 | ||
3293 | static void | |
3294 | describe_other_breakpoints (pc, section) | |
3295 | CORE_ADDR pc; | |
3296 | asection *section; | |
3297 | { | |
3298 | register int others = 0; | |
3299 | register struct breakpoint *b; | |
3300 | ||
3301 | ALL_BREAKPOINTS (b) | |
3302 | if (b->address == pc) | |
c5aa993b JM |
3303 | if (overlay_debugging == 0 || |
3304 | b->section == section) | |
3305 | others++; | |
c906108c SS |
3306 | if (others > 0) |
3307 | { | |
3308 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3309 | ALL_BREAKPOINTS (b) | |
3310 | if (b->address == pc) | |
c5aa993b JM |
3311 | if (overlay_debugging == 0 || |
3312 | b->section == section) | |
3313 | { | |
3314 | others--; | |
3315 | printf_filtered | |
3316 | ("%d%s%s ", | |
3317 | b->number, | |
53a5351d JM |
3318 | ((b->enable == disabled || |
3319 | b->enable == shlib_disabled || | |
c2c6d25f JM |
3320 | b->enable == call_disabled) ? " (disabled)" |
3321 | : b->enable == permanent ? " (permanent)" | |
3322 | : ""), | |
c5aa993b JM |
3323 | (others > 1) ? "," : ((others == 1) ? " and" : "")); |
3324 | } | |
c906108c SS |
3325 | printf_filtered ("also set at pc "); |
3326 | print_address_numeric (pc, 1, gdb_stdout); | |
3327 | printf_filtered (".\n"); | |
3328 | } | |
3329 | } | |
3330 | \f | |
3331 | /* Set the default place to put a breakpoint | |
3332 | for the `break' command with no arguments. */ | |
3333 | ||
3334 | void | |
3335 | set_default_breakpoint (valid, addr, symtab, line) | |
3336 | int valid; | |
3337 | CORE_ADDR addr; | |
3338 | struct symtab *symtab; | |
3339 | int line; | |
3340 | { | |
3341 | default_breakpoint_valid = valid; | |
3342 | default_breakpoint_address = addr; | |
3343 | default_breakpoint_symtab = symtab; | |
3344 | default_breakpoint_line = line; | |
3345 | } | |
3346 | ||
3347 | /* Rescan breakpoints at address ADDRESS, | |
3348 | marking the first one as "first" and any others as "duplicates". | |
c2c6d25f JM |
3349 | This is so that the bpt instruction is only inserted once. |
3350 | If we have a permanent breakpoint at ADDRESS, make that one | |
3351 | the official one, and the rest as duplicates. */ | |
c906108c SS |
3352 | |
3353 | static void | |
3354 | check_duplicates (address, section) | |
3355 | CORE_ADDR address; | |
3356 | asection *section; | |
3357 | { | |
3358 | register struct breakpoint *b; | |
3359 | register int count = 0; | |
c2c6d25f | 3360 | struct breakpoint *perm_bp = 0; |
c906108c SS |
3361 | |
3362 | if (address == 0) /* Watchpoints are uninteresting */ | |
3363 | return; | |
3364 | ||
3365 | ALL_BREAKPOINTS (b) | |
3366 | if (b->enable != disabled | |
3367 | && b->enable != shlib_disabled | |
3368 | && b->enable != call_disabled | |
3369 | && b->address == address | |
3370 | && (overlay_debugging == 0 || b->section == section)) | |
c5aa993b | 3371 | { |
c2c6d25f JM |
3372 | /* Have we found a permanent breakpoint? */ |
3373 | if (b->enable == permanent) | |
3374 | { | |
3375 | perm_bp = b; | |
3376 | break; | |
3377 | } | |
3378 | ||
c5aa993b JM |
3379 | count++; |
3380 | b->duplicate = count > 1; | |
3381 | } | |
c2c6d25f JM |
3382 | |
3383 | /* If we found a permanent breakpoint at this address, go over the | |
3384 | list again and declare all the other breakpoints there to be the | |
3385 | duplicates. */ | |
3386 | if (perm_bp) | |
3387 | { | |
3388 | perm_bp->duplicate = 0; | |
3389 | ||
3390 | /* Permanent breakpoint should always be inserted. */ | |
3391 | if (! perm_bp->inserted) | |
3392 | internal_error ("allegedly permanent breakpoint is not " | |
3393 | "actually inserted"); | |
3394 | ||
3395 | ALL_BREAKPOINTS (b) | |
3396 | if (b != perm_bp) | |
3397 | { | |
3398 | if (b->inserted) | |
3399 | internal_error ("another breakpoint was inserted on top of " | |
3400 | "a permanent breakpoint"); | |
3401 | ||
3402 | if (b->enable != disabled | |
3403 | && b->enable != shlib_disabled | |
3404 | && b->enable != call_disabled | |
3405 | && b->address == address | |
3406 | && (overlay_debugging == 0 || b->section == section)) | |
3407 | b->duplicate = 1; | |
3408 | } | |
3409 | } | |
c906108c SS |
3410 | } |
3411 | ||
3412 | /* Low level routine to set a breakpoint. | |
3413 | Takes as args the three things that every breakpoint must have. | |
3414 | Returns the breakpoint object so caller can set other things. | |
3415 | Does not set the breakpoint number! | |
3416 | Does not print anything. | |
3417 | ||
3418 | ==> This routine should not be called if there is a chance of later | |
3419 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
3420 | your arguments BEFORE calling this routine! */ | |
3421 | ||
3422 | struct breakpoint * | |
3423 | set_raw_breakpoint (sal) | |
3424 | struct symtab_and_line sal; | |
3425 | { | |
3426 | register struct breakpoint *b, *b1; | |
3427 | ||
3428 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3429 | memset (b, 0, sizeof (*b)); | |
3430 | b->address = sal.pc; | |
3431 | if (sal.symtab == NULL) | |
3432 | b->source_file = NULL; | |
3433 | else | |
3434 | b->source_file = savestring (sal.symtab->filename, | |
3435 | strlen (sal.symtab->filename)); | |
3436 | b->section = sal.section; | |
3437 | b->language = current_language->la_language; | |
3438 | b->input_radix = input_radix; | |
3439 | b->thread = -1; | |
3440 | b->line_number = sal.line; | |
3441 | b->enable = enabled; | |
3442 | b->next = 0; | |
3443 | b->silent = 0; | |
3444 | b->ignore_count = 0; | |
3445 | b->commands = NULL; | |
3446 | b->frame = 0; | |
3447 | b->dll_pathname = NULL; | |
3448 | b->triggered_dll_pathname = NULL; | |
3449 | b->forked_inferior_pid = 0; | |
3450 | b->exec_pathname = NULL; | |
3451 | ||
3452 | /* Add this breakpoint to the end of the chain | |
3453 | so that a list of breakpoints will come out in order | |
3454 | of increasing numbers. */ | |
3455 | ||
3456 | b1 = breakpoint_chain; | |
3457 | if (b1 == 0) | |
3458 | breakpoint_chain = b; | |
3459 | else | |
3460 | { | |
3461 | while (b1->next) | |
3462 | b1 = b1->next; | |
3463 | b1->next = b; | |
3464 | } | |
3465 | ||
3466 | check_duplicates (sal.pc, sal.section); | |
3467 | breakpoints_changed (); | |
3468 | ||
3469 | return b; | |
3470 | } | |
3471 | ||
c2c6d25f JM |
3472 | |
3473 | /* Note that the breakpoint object B describes a permanent breakpoint | |
3474 | instruction, hard-wired into the inferior's code. */ | |
3475 | void | |
3476 | make_breakpoint_permanent (struct breakpoint *b) | |
3477 | { | |
3478 | b->enable = permanent; | |
3479 | ||
3480 | /* By definition, permanent breakpoints are already present in the code. */ | |
3481 | b->inserted = 1; | |
3482 | } | |
3483 | ||
c906108c SS |
3484 | #ifdef GET_LONGJMP_TARGET |
3485 | ||
3486 | static void | |
3487 | create_longjmp_breakpoint (func_name) | |
3488 | char *func_name; | |
3489 | { | |
3490 | struct symtab_and_line sal; | |
3491 | struct breakpoint *b; | |
3492 | ||
c5aa993b | 3493 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3494 | if (func_name != NULL) |
3495 | { | |
3496 | struct minimal_symbol *m; | |
3497 | ||
53a5351d JM |
3498 | m = lookup_minimal_symbol_text (func_name, NULL, |
3499 | (struct objfile *) NULL); | |
c906108c SS |
3500 | if (m) |
3501 | sal.pc = SYMBOL_VALUE_ADDRESS (m); | |
3502 | else | |
3503 | return; | |
3504 | } | |
3505 | sal.section = find_pc_overlay (sal.pc); | |
3506 | b = set_raw_breakpoint (sal); | |
c5aa993b JM |
3507 | if (!b) |
3508 | return; | |
c906108c SS |
3509 | |
3510 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; | |
3511 | b->disposition = donttouch; | |
3512 | b->enable = disabled; | |
3513 | b->silent = 1; | |
3514 | if (func_name) | |
c5aa993b | 3515 | b->addr_string = strsave (func_name); |
c906108c SS |
3516 | b->number = internal_breakpoint_number--; |
3517 | } | |
3518 | ||
c5aa993b | 3519 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
c906108c | 3520 | |
53a5351d JM |
3521 | /* Call this routine when stepping and nexting to enable a breakpoint |
3522 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3523 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3524 | ||
3525 | void | |
c5aa993b | 3526 | enable_longjmp_breakpoint () |
c906108c SS |
3527 | { |
3528 | register struct breakpoint *b; | |
3529 | ||
3530 | ALL_BREAKPOINTS (b) | |
3531 | if (b->type == bp_longjmp) | |
c5aa993b JM |
3532 | { |
3533 | b->enable = enabled; | |
3534 | check_duplicates (b->address, b->section); | |
3535 | } | |
c906108c SS |
3536 | } |
3537 | ||
3538 | void | |
c5aa993b | 3539 | disable_longjmp_breakpoint () |
c906108c SS |
3540 | { |
3541 | register struct breakpoint *b; | |
3542 | ||
3543 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3544 | if (b->type == bp_longjmp |
c906108c | 3545 | || b->type == bp_longjmp_resume) |
c5aa993b JM |
3546 | { |
3547 | b->enable = disabled; | |
3548 | check_duplicates (b->address, b->section); | |
3549 | } | |
c906108c SS |
3550 | } |
3551 | ||
3552 | #ifdef SOLIB_ADD | |
3553 | void | |
3554 | remove_solib_event_breakpoints () | |
3555 | { | |
3556 | register struct breakpoint *b, *temp; | |
3557 | ||
3558 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3559 | if (b->type == bp_shlib_event) | |
c5aa993b | 3560 | delete_breakpoint (b); |
c906108c SS |
3561 | } |
3562 | ||
c2c6d25f | 3563 | struct breakpoint * |
c906108c SS |
3564 | create_solib_event_breakpoint (address) |
3565 | CORE_ADDR address; | |
3566 | { | |
3567 | struct breakpoint *b; | |
3568 | struct symtab_and_line sal; | |
3569 | ||
c5aa993b | 3570 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3571 | sal.pc = address; |
3572 | sal.section = find_pc_overlay (sal.pc); | |
3573 | b = set_raw_breakpoint (sal); | |
3574 | b->number = internal_breakpoint_number--; | |
3575 | b->disposition = donttouch; | |
3576 | b->type = bp_shlib_event; | |
c2c6d25f JM |
3577 | |
3578 | return b; | |
c906108c SS |
3579 | } |
3580 | ||
104c1213 JM |
3581 | /* Disable any breakpoints that are on code in shared libraries. Only |
3582 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
3583 | ||
c906108c SS |
3584 | void |
3585 | disable_breakpoints_in_shlibs (silent) | |
3586 | int silent; | |
3587 | { | |
c5aa993b JM |
3588 | struct breakpoint *b; |
3589 | int disabled_shlib_breaks = 0; | |
c906108c SS |
3590 | |
3591 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
3592 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3593 | { |
c906108c | 3594 | #if defined (PC_SOLIB) |
c5aa993b JM |
3595 | if (((b->type == bp_breakpoint) || |
3596 | (b->type == bp_hardware_breakpoint)) && | |
104c1213 | 3597 | b->enable == enabled && |
c5aa993b JM |
3598 | !b->duplicate && |
3599 | PC_SOLIB (b->address)) | |
3600 | { | |
3601 | b->enable = shlib_disabled; | |
3602 | if (!silent) | |
3603 | { | |
3604 | if (!disabled_shlib_breaks) | |
3605 | { | |
3606 | target_terminal_ours_for_output (); | |
53a5351d | 3607 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
3608 | } |
3609 | disabled_shlib_breaks = 1; | |
53a5351d | 3610 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
3611 | } |
3612 | } | |
c906108c | 3613 | #endif |
c5aa993b | 3614 | } |
c906108c SS |
3615 | } |
3616 | ||
3617 | /* Try to reenable any breakpoints in shared libraries. */ | |
3618 | void | |
3619 | re_enable_breakpoints_in_shlibs () | |
3620 | { | |
3621 | struct breakpoint *b; | |
3622 | ||
3623 | ALL_BREAKPOINTS (b) | |
3624 | if (b->enable == shlib_disabled) | |
c5aa993b JM |
3625 | { |
3626 | char buf[1]; | |
c906108c | 3627 | |
c5aa993b JM |
3628 | /* Do not reenable the breakpoint if the shared library |
3629 | is still not mapped in. */ | |
3630 | if (target_read_memory (b->address, buf, 1) == 0) | |
3631 | b->enable = enabled; | |
3632 | } | |
c906108c SS |
3633 | } |
3634 | ||
3635 | #endif | |
3636 | ||
3637 | static void | |
53a5351d | 3638 | solib_load_unload_1 (hookname, tempflag, dll_pathname, cond_string, bp_kind) |
7a292a7a SS |
3639 | char *hookname; |
3640 | int tempflag; | |
3641 | char *dll_pathname; | |
3642 | char *cond_string; | |
3643 | enum bptype bp_kind; | |
c906108c | 3644 | { |
c5aa993b | 3645 | struct breakpoint *b; |
c906108c | 3646 | struct symtabs_and_lines sals; |
c5aa993b JM |
3647 | struct cleanup *old_chain; |
3648 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
3649 | char *addr_start = hookname; |
3650 | char *addr_end = NULL; | |
3651 | char **canonical = (char **) NULL; | |
3652 | int thread = -1; /* All threads. */ | |
3653 | ||
c906108c SS |
3654 | /* Set a breakpoint on the specified hook. */ |
3655 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
3656 | addr_end = hookname; | |
c5aa993b | 3657 | |
c906108c SS |
3658 | if (sals.nelts == 0) |
3659 | { | |
3660 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
3661 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
3662 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
3663 | return; | |
3664 | } | |
3665 | if (sals.nelts != 1) | |
3666 | { | |
53a5351d | 3667 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
3668 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
3669 | return; | |
3670 | } | |
3671 | ||
53a5351d JM |
3672 | /* Make sure that all storage allocated in decode_line_1 gets freed |
3673 | in case the following errors out. */ | |
c906108c | 3674 | old_chain = make_cleanup (free, sals.sals); |
c5aa993b | 3675 | if (canonical != (char **) NULL) |
c906108c SS |
3676 | { |
3677 | make_cleanup (free, canonical); | |
3678 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
3679 | if (canonical[0] != NULL) | |
c5aa993b | 3680 | make_cleanup (free, canonical[0]); |
c906108c | 3681 | } |
c5aa993b | 3682 | |
c906108c | 3683 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 3684 | |
c906108c | 3685 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 3686 | if (canonical != (char **) NULL) |
c906108c | 3687 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 3688 | |
c906108c SS |
3689 | b = set_raw_breakpoint (sals.sals[0]); |
3690 | set_breakpoint_count (breakpoint_count + 1); | |
3691 | b->number = breakpoint_count; | |
3692 | b->cond = NULL; | |
53a5351d JM |
3693 | b->cond_string = (cond_string == NULL) ? |
3694 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 3695 | b->thread = thread; |
c5aa993b JM |
3696 | |
3697 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
3698 | b->addr_string = canonical[0]; |
3699 | else if (addr_start) | |
3700 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 3701 | |
c906108c SS |
3702 | b->enable = enabled; |
3703 | b->disposition = tempflag ? del : donttouch; | |
c5aa993b | 3704 | |
c906108c SS |
3705 | if (dll_pathname == NULL) |
3706 | b->dll_pathname = NULL; | |
3707 | else | |
3708 | { | |
3709 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
3710 | strcpy (b->dll_pathname, dll_pathname); | |
3711 | } | |
3712 | b->type = bp_kind; | |
c5aa993b | 3713 | |
c906108c SS |
3714 | mention (b); |
3715 | do_cleanups (old_chain); | |
3716 | } | |
3717 | ||
3718 | void | |
53a5351d JM |
3719 | create_solib_load_event_breakpoint (hookname, tempflag, |
3720 | dll_pathname, cond_string) | |
c5aa993b JM |
3721 | char *hookname; |
3722 | int tempflag; | |
3723 | char *dll_pathname; | |
3724 | char *cond_string; | |
c906108c | 3725 | { |
53a5351d JM |
3726 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
3727 | cond_string, bp_catch_load); | |
c906108c SS |
3728 | } |
3729 | ||
3730 | void | |
53a5351d JM |
3731 | create_solib_unload_event_breakpoint (hookname, tempflag, |
3732 | dll_pathname, cond_string) | |
c5aa993b JM |
3733 | char *hookname; |
3734 | int tempflag; | |
3735 | char *dll_pathname; | |
3736 | char *cond_string; | |
c906108c | 3737 | { |
53a5351d JM |
3738 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
3739 | cond_string, bp_catch_unload); | |
c906108c SS |
3740 | } |
3741 | ||
3742 | static void | |
3743 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind) | |
7a292a7a SS |
3744 | int tempflag; |
3745 | char *cond_string; | |
3746 | enum bptype bp_kind; | |
c906108c | 3747 | { |
c5aa993b JM |
3748 | struct symtab_and_line sal; |
3749 | struct breakpoint *b; | |
3750 | int thread = -1; /* All threads. */ | |
3751 | ||
3752 | INIT_SAL (&sal); | |
c906108c SS |
3753 | sal.pc = 0; |
3754 | sal.symtab = NULL; | |
3755 | sal.line = 0; | |
c5aa993b | 3756 | |
c906108c SS |
3757 | b = set_raw_breakpoint (sal); |
3758 | set_breakpoint_count (breakpoint_count + 1); | |
3759 | b->number = breakpoint_count; | |
3760 | b->cond = NULL; | |
53a5351d JM |
3761 | b->cond_string = (cond_string == NULL) ? |
3762 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
3763 | b->thread = thread; |
3764 | b->addr_string = NULL; | |
3765 | b->enable = enabled; | |
3766 | b->disposition = tempflag ? del : donttouch; | |
3767 | b->forked_inferior_pid = 0; | |
c5aa993b | 3768 | |
c906108c | 3769 | b->type = bp_kind; |
c5aa993b | 3770 | |
c906108c SS |
3771 | mention (b); |
3772 | } | |
3773 | ||
3774 | void | |
3775 | create_fork_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
3776 | int tempflag; |
3777 | char *cond_string; | |
c906108c SS |
3778 | { |
3779 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
3780 | } | |
c5aa993b | 3781 | |
c906108c SS |
3782 | void |
3783 | create_vfork_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
3784 | int tempflag; |
3785 | char *cond_string; | |
c906108c SS |
3786 | { |
3787 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
3788 | } | |
3789 | ||
3790 | void | |
3791 | create_exec_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
3792 | int tempflag; |
3793 | char *cond_string; | |
c906108c | 3794 | { |
c5aa993b JM |
3795 | struct symtab_and_line sal; |
3796 | struct breakpoint *b; | |
3797 | int thread = -1; /* All threads. */ | |
c906108c | 3798 | |
c5aa993b | 3799 | INIT_SAL (&sal); |
c906108c SS |
3800 | sal.pc = 0; |
3801 | sal.symtab = NULL; | |
3802 | sal.line = 0; | |
3803 | ||
3804 | b = set_raw_breakpoint (sal); | |
3805 | set_breakpoint_count (breakpoint_count + 1); | |
3806 | b->number = breakpoint_count; | |
3807 | b->cond = NULL; | |
53a5351d JM |
3808 | b->cond_string = (cond_string == NULL) ? |
3809 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
3810 | b->thread = thread; |
3811 | b->addr_string = NULL; | |
3812 | b->enable = enabled; | |
3813 | b->disposition = tempflag ? del : donttouch; | |
3814 | ||
3815 | b->type = bp_catch_exec; | |
3816 | ||
3817 | mention (b); | |
3818 | } | |
3819 | ||
3820 | static int | |
c5aa993b | 3821 | hw_breakpoint_used_count () |
c906108c SS |
3822 | { |
3823 | register struct breakpoint *b; | |
3824 | int i = 0; | |
3825 | ||
3826 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
3827 | { |
3828 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
3829 | i++; | |
3830 | } | |
c906108c SS |
3831 | |
3832 | return i; | |
3833 | } | |
3834 | ||
3835 | static int | |
c5aa993b JM |
3836 | hw_watchpoint_used_count (type, other_type_used) |
3837 | enum bptype type; | |
3838 | int *other_type_used; | |
c906108c SS |
3839 | { |
3840 | register struct breakpoint *b; | |
3841 | int i = 0; | |
3842 | ||
3843 | *other_type_used = 0; | |
3844 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
3845 | { |
3846 | if (b->enable == enabled) | |
3847 | { | |
3848 | if (b->type == type) | |
3849 | i++; | |
3850 | else if ((b->type == bp_hardware_watchpoint || | |
3851 | b->type == bp_read_watchpoint || | |
3852 | b->type == bp_access_watchpoint) | |
3853 | && b->enable == enabled) | |
3854 | *other_type_used = 1; | |
3855 | } | |
3856 | } | |
c906108c SS |
3857 | return i; |
3858 | } | |
3859 | ||
53a5351d JM |
3860 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
3861 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 3862 | |
53a5351d JM |
3863 | FIXME - This ought to be done by setting a temporary breakpoint |
3864 | that gets deleted automatically... */ | |
c906108c SS |
3865 | |
3866 | void | |
c5aa993b | 3867 | set_longjmp_resume_breakpoint (pc, frame) |
c906108c SS |
3868 | CORE_ADDR pc; |
3869 | struct frame_info *frame; | |
3870 | { | |
3871 | register struct breakpoint *b; | |
3872 | ||
3873 | ALL_BREAKPOINTS (b) | |
3874 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
3875 | { |
3876 | b->address = pc; | |
3877 | b->enable = enabled; | |
3878 | if (frame != NULL) | |
3879 | b->frame = frame->frame; | |
3880 | else | |
3881 | b->frame = 0; | |
3882 | check_duplicates (b->address, b->section); | |
3883 | return; | |
3884 | } | |
c906108c SS |
3885 | } |
3886 | ||
3887 | void | |
3888 | disable_watchpoints_before_interactive_call_start () | |
3889 | { | |
c5aa993b | 3890 | struct breakpoint *b; |
c906108c SS |
3891 | |
3892 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
3893 | { |
3894 | if (((b->type == bp_watchpoint) | |
3895 | || (b->type == bp_hardware_watchpoint) | |
3896 | || (b->type == bp_read_watchpoint) | |
3897 | || (b->type == bp_access_watchpoint) | |
3898 | || ep_is_exception_catchpoint (b)) | |
3899 | && (b->enable == enabled)) | |
3900 | { | |
3901 | b->enable = call_disabled; | |
3902 | check_duplicates (b->address, b->section); | |
3903 | } | |
3904 | } | |
c906108c SS |
3905 | } |
3906 | ||
3907 | void | |
3908 | enable_watchpoints_after_interactive_call_stop () | |
3909 | { | |
c5aa993b | 3910 | struct breakpoint *b; |
c906108c SS |
3911 | |
3912 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
3913 | { |
3914 | if (((b->type == bp_watchpoint) | |
3915 | || (b->type == bp_hardware_watchpoint) | |
3916 | || (b->type == bp_read_watchpoint) | |
3917 | || (b->type == bp_access_watchpoint) | |
3918 | || ep_is_exception_catchpoint (b)) | |
3919 | && (b->enable == call_disabled)) | |
3920 | { | |
3921 | b->enable = enabled; | |
3922 | check_duplicates (b->address, b->section); | |
3923 | } | |
3924 | } | |
c906108c SS |
3925 | } |
3926 | ||
3927 | ||
3928 | /* Set a breakpoint that will evaporate an end of command | |
3929 | at address specified by SAL. | |
3930 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
3931 | ||
3932 | struct breakpoint * | |
3933 | set_momentary_breakpoint (sal, frame, type) | |
3934 | struct symtab_and_line sal; | |
3935 | struct frame_info *frame; | |
3936 | enum bptype type; | |
3937 | { | |
3938 | register struct breakpoint *b; | |
3939 | b = set_raw_breakpoint (sal); | |
3940 | b->type = type; | |
3941 | b->enable = enabled; | |
3942 | b->disposition = donttouch; | |
3943 | b->frame = (frame ? frame->frame : 0); | |
3944 | ||
3945 | /* If we're debugging a multi-threaded program, then we | |
3946 | want momentary breakpoints to be active in only a | |
3947 | single thread of control. */ | |
3948 | if (in_thread_list (inferior_pid)) | |
3949 | b->thread = pid_to_thread_id (inferior_pid); | |
3950 | ||
3951 | return b; | |
3952 | } | |
c906108c | 3953 | \f |
c5aa993b | 3954 | |
c906108c SS |
3955 | /* Tell the user we have just set a breakpoint B. */ |
3956 | ||
3957 | static void | |
3958 | mention (b) | |
3959 | struct breakpoint *b; | |
3960 | { | |
3961 | int say_where = 0; | |
3962 | ||
3963 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
3964 | watchpoint) other than breakpoint creation. It should be possible to | |
3965 | clean this up and at the same time replace the random calls to | |
3966 | breakpoint_changed with this hook, as has already been done for | |
3967 | delete_breakpoint_hook and so on. */ | |
3968 | if (create_breakpoint_hook) | |
3969 | create_breakpoint_hook (b); | |
104c1213 | 3970 | breakpoint_create_event (b->number); |
c906108c SS |
3971 | |
3972 | switch (b->type) | |
3973 | { | |
3974 | case bp_none: | |
3975 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
3976 | break; | |
3977 | case bp_watchpoint: | |
3978 | printf_filtered ("Watchpoint %d: ", b->number); | |
3979 | print_expression (b->exp, gdb_stdout); | |
3980 | break; | |
3981 | case bp_hardware_watchpoint: | |
3982 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
3983 | print_expression (b->exp, gdb_stdout); | |
3984 | break; | |
3985 | case bp_read_watchpoint: | |
3986 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
3987 | print_expression (b->exp, gdb_stdout); | |
3988 | break; | |
3989 | case bp_access_watchpoint: | |
53a5351d JM |
3990 | printf_filtered ("Hardware access (read/write) watchpoint %d: ", |
3991 | b->number); | |
c906108c SS |
3992 | print_expression (b->exp, gdb_stdout); |
3993 | break; | |
3994 | case bp_breakpoint: | |
3995 | printf_filtered ("Breakpoint %d", b->number); | |
3996 | say_where = 1; | |
3997 | break; | |
3998 | case bp_hardware_breakpoint: | |
3999 | printf_filtered ("Hardware assisted breakpoint %d", b->number); | |
4000 | say_where = 1; | |
4001 | break; | |
4002 | case bp_catch_load: | |
4003 | case bp_catch_unload: | |
4004 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
4005 | b->number, |
4006 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
4007 | (b->dll_pathname != NULL) ? |
4008 | b->dll_pathname : "<any library>"); | |
c906108c SS |
4009 | break; |
4010 | case bp_catch_fork: | |
4011 | case bp_catch_vfork: | |
4012 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4013 | b->number, |
4014 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
4015 | break; |
4016 | case bp_catch_exec: | |
4017 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 4018 | b->number); |
c906108c SS |
4019 | break; |
4020 | case bp_catch_catch: | |
4021 | case bp_catch_throw: | |
4022 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4023 | b->number, |
4024 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
4025 | break; |
4026 | ||
4027 | case bp_until: | |
4028 | case bp_finish: | |
4029 | case bp_longjmp: | |
4030 | case bp_longjmp_resume: | |
4031 | case bp_step_resume: | |
4032 | case bp_through_sigtramp: | |
4033 | case bp_call_dummy: | |
4034 | case bp_watchpoint_scope: | |
4035 | case bp_shlib_event: | |
4036 | break; | |
4037 | } | |
4038 | if (say_where) | |
4039 | { | |
4040 | if (addressprint || b->source_file == NULL) | |
4041 | { | |
4042 | printf_filtered (" at "); | |
4043 | print_address_numeric (b->address, 1, gdb_stdout); | |
4044 | } | |
4045 | if (b->source_file) | |
4046 | printf_filtered (": file %s, line %d.", | |
4047 | b->source_file, b->line_number); | |
c5aa993b JM |
4048 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, b, 1)); |
4049 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
c906108c SS |
4050 | } |
4051 | printf_filtered ("\n"); | |
4052 | } | |
c906108c | 4053 | \f |
c5aa993b | 4054 | |
c906108c SS |
4055 | /* Set a breakpoint according to ARG (function, linenum or *address) |
4056 | flag: first bit : 0 non-temporary, 1 temporary. | |
c5aa993b | 4057 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ |
c906108c SS |
4058 | |
4059 | static void | |
4060 | break_command_1 (arg, flag, from_tty) | |
4061 | char *arg; | |
4062 | int flag, from_tty; | |
4063 | { | |
4064 | int tempflag, hardwareflag; | |
4065 | struct symtabs_and_lines sals; | |
4066 | struct symtab_and_line sal; | |
4067 | register struct expression *cond = 0; | |
4068 | register struct breakpoint *b; | |
4069 | ||
4070 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
4071 | char *cond_start = NULL; | |
4072 | char *cond_end = NULL; | |
4073 | /* Pointers in arg to the start, and one past the end, | |
4074 | of the address part. */ | |
4075 | char *addr_start = NULL; | |
4076 | char *addr_end = NULL; | |
4077 | struct cleanup *old_chain; | |
4078 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b | 4079 | char **canonical = (char **) NULL; |
c906108c SS |
4080 | int i; |
4081 | int thread; | |
4082 | ||
4083 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4084 | tempflag = flag & BP_TEMPFLAG; | |
4085 | ||
4086 | sals.sals = NULL; | |
4087 | sals.nelts = 0; | |
4088 | ||
c5aa993b | 4089 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
4090 | |
4091 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
4092 | ||
c5aa993b | 4093 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
4094 | && (arg[2] == ' ' || arg[2] == '\t'))) |
4095 | { | |
4096 | if (default_breakpoint_valid) | |
4097 | { | |
c5aa993b | 4098 | sals.sals = (struct symtab_and_line *) |
c906108c SS |
4099 | xmalloc (sizeof (struct symtab_and_line)); |
4100 | sal.pc = default_breakpoint_address; | |
4101 | sal.line = default_breakpoint_line; | |
4102 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4103 | sal.section = find_pc_overlay (sal.pc); |
c906108c SS |
4104 | sals.sals[0] = sal; |
4105 | sals.nelts = 1; | |
4106 | } | |
4107 | else | |
4108 | error ("No default breakpoint address now."); | |
4109 | } | |
4110 | else | |
4111 | { | |
4112 | addr_start = arg; | |
4113 | ||
4114 | /* Force almost all breakpoints to be in terms of the | |
c5aa993b JM |
4115 | current_source_symtab (which is decode_line_1's default). This |
4116 | should produce the results we want almost all of the time while | |
4117 | leaving default_breakpoint_* alone. */ | |
c906108c SS |
4118 | if (default_breakpoint_valid |
4119 | && (!current_source_symtab | |
4120 | || (arg && (*arg == '+' || *arg == '-')))) | |
4121 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
4122 | default_breakpoint_line, &canonical); | |
4123 | else | |
c5aa993b | 4124 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, &canonical); |
c906108c SS |
4125 | |
4126 | addr_end = arg; | |
4127 | } | |
c5aa993b JM |
4128 | |
4129 | if (!sals.nelts) | |
c906108c SS |
4130 | return; |
4131 | ||
53a5351d JM |
4132 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4133 | in case the following `for' loop errors out. */ | |
c906108c | 4134 | old_chain = make_cleanup (free, sals.sals); |
c5aa993b | 4135 | if (canonical != (char **) NULL) |
c906108c SS |
4136 | { |
4137 | make_cleanup (free, canonical); | |
4138 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
4139 | for (i = 0; i < sals.nelts; i++) | |
4140 | { | |
4141 | if (canonical[i] != NULL) | |
4142 | make_cleanup (free, canonical[i]); | |
4143 | } | |
4144 | } | |
4145 | ||
4146 | thread = -1; /* No specific thread yet */ | |
4147 | ||
4148 | /* Resolve all line numbers to PC's, and verify that conditions | |
4149 | can be parsed, before setting any breakpoints. */ | |
4150 | for (i = 0; i < sals.nelts; i++) | |
4151 | { | |
4152 | char *tok, *end_tok; | |
4153 | int toklen; | |
4154 | ||
4155 | resolve_sal_pc (&sals.sals[i]); | |
4156 | ||
4157 | /* It's possible for the PC to be nonzero, but still an illegal | |
4158 | value on some targets. | |
4159 | ||
4160 | For example, on HP-UX if you start gdb, and before running the | |
4161 | inferior you try to set a breakpoint on a shared library function | |
4162 | "foo" where the inferior doesn't call "foo" directly but does | |
4163 | pass its address to another function call, then we do find a | |
4164 | minimal symbol for the "foo", but it's address is invalid. | |
4165 | (Appears to be an index into a table that the loader sets up | |
4166 | when the inferior is run.) | |
4167 | ||
4168 | Give the target a chance to bless sals.sals[i].pc before we | |
4169 | try to make a breakpoint for it. */ | |
c5aa993b JM |
4170 | if (PC_REQUIRES_RUN_BEFORE_USE (sals.sals[i].pc)) |
4171 | { | |
53a5351d JM |
4172 | error ("Cannot break on %s without a running program.", |
4173 | addr_start); | |
c5aa993b JM |
4174 | } |
4175 | ||
c906108c SS |
4176 | tok = arg; |
4177 | ||
4178 | while (tok && *tok) | |
4179 | { | |
4180 | while (*tok == ' ' || *tok == '\t') | |
4181 | tok++; | |
4182 | ||
4183 | end_tok = tok; | |
4184 | ||
4185 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4186 | end_tok++; | |
4187 | ||
4188 | toklen = end_tok - tok; | |
4189 | ||
4190 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4191 | { | |
4192 | tok = cond_start = end_tok + 1; | |
4193 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
4194 | cond_end = tok; | |
4195 | } | |
4196 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4197 | { | |
4198 | char *tmptok; | |
4199 | ||
4200 | tok = end_tok + 1; | |
4201 | tmptok = tok; | |
4202 | thread = strtol (tok, &tok, 0); | |
4203 | if (tok == tmptok) | |
4204 | error ("Junk after thread keyword."); | |
4205 | if (!valid_thread_id (thread)) | |
4206 | error ("Unknown thread %d\n", thread); | |
4207 | } | |
4208 | else | |
4209 | error ("Junk at end of arguments."); | |
4210 | } | |
4211 | } | |
4212 | if (hardwareflag) | |
4213 | { | |
4214 | int i, target_resources_ok; | |
4215 | ||
c5aa993b | 4216 | i = hw_breakpoint_used_count (); |
53a5351d JM |
4217 | target_resources_ok = |
4218 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4219 | i + sals.nelts, 0); | |
c906108c SS |
4220 | if (target_resources_ok == 0) |
4221 | error ("No hardware breakpoint support in the target."); | |
4222 | else if (target_resources_ok < 0) | |
c5aa993b | 4223 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
4224 | } |
4225 | ||
4226 | /* Remove the canonical strings from the cleanup, they are needed below. */ | |
c5aa993b | 4227 | if (canonical != (char **) NULL) |
c906108c SS |
4228 | discard_cleanups (canonical_strings_chain); |
4229 | ||
4230 | /* Now set all the breakpoints. */ | |
4231 | for (i = 0; i < sals.nelts; i++) | |
4232 | { | |
4233 | sal = sals.sals[i]; | |
4234 | ||
4235 | if (from_tty) | |
4236 | describe_other_breakpoints (sal.pc, sal.section); | |
4237 | ||
4238 | b = set_raw_breakpoint (sal); | |
4239 | set_breakpoint_count (breakpoint_count + 1); | |
4240 | b->number = breakpoint_count; | |
4241 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; | |
4242 | b->cond = cond; | |
4243 | b->thread = thread; | |
4244 | ||
4245 | /* If a canonical line spec is needed use that instead of the | |
c5aa993b JM |
4246 | command string. */ |
4247 | if (canonical != (char **) NULL && canonical[i] != NULL) | |
c906108c SS |
4248 | b->addr_string = canonical[i]; |
4249 | else if (addr_start) | |
4250 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
4251 | if (cond_start) | |
4252 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
c5aa993b | 4253 | |
c906108c SS |
4254 | b->enable = enabled; |
4255 | b->disposition = tempflag ? del : donttouch; | |
4256 | mention (b); | |
4257 | } | |
4258 | ||
4259 | if (sals.nelts > 1) | |
4260 | { | |
53a5351d JM |
4261 | warning ("Multiple breakpoints were set."); |
4262 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c SS |
4263 | } |
4264 | do_cleanups (old_chain); | |
4265 | } | |
4266 | ||
4267 | static void | |
4268 | break_at_finish_at_depth_command_1 (arg, flag, from_tty) | |
4269 | char *arg; | |
4270 | int flag; | |
4271 | int from_tty; | |
4272 | { | |
4273 | struct frame_info *frame; | |
4274 | CORE_ADDR low, high, selected_pc = 0; | |
4275 | char *extra_args, *level_arg, *addr_string; | |
4276 | int extra_args_len = 0, if_arg = 0; | |
4277 | ||
4278 | if (!arg || | |
4279 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4280 | { | |
4281 | ||
4282 | if (default_breakpoint_valid) | |
4283 | { | |
4284 | if (selected_frame) | |
4285 | { | |
4286 | selected_pc = selected_frame->pc; | |
4287 | if (arg) | |
4288 | if_arg = 1; | |
4289 | } | |
4290 | else | |
4291 | error ("No selected frame."); | |
4292 | } | |
4293 | else | |
4294 | error ("No default breakpoint address now."); | |
4295 | } | |
4296 | else | |
4297 | { | |
4298 | extra_args = strchr (arg, ' '); | |
4299 | if (extra_args) | |
4300 | { | |
4301 | extra_args++; | |
4302 | extra_args_len = strlen (extra_args); | |
4303 | level_arg = (char *) xmalloc (extra_args - arg); | |
4304 | strncpy (level_arg, arg, extra_args - arg - 1); | |
4305 | level_arg[extra_args - arg - 1] = '\0'; | |
4306 | } | |
4307 | else | |
4308 | { | |
4309 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
4310 | strcpy (level_arg, arg); | |
4311 | } | |
4312 | ||
4313 | frame = parse_frame_specification (level_arg); | |
4314 | if (frame) | |
4315 | selected_pc = frame->pc; | |
4316 | else | |
4317 | selected_pc = 0; | |
4318 | } | |
4319 | if (if_arg) | |
4320 | { | |
4321 | extra_args = arg; | |
c5aa993b | 4322 | extra_args_len = strlen (arg); |
c906108c SS |
4323 | } |
4324 | ||
4325 | if (selected_pc) | |
4326 | { | |
c5aa993b | 4327 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c SS |
4328 | { |
4329 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
4330 | if (extra_args_len) | |
d4f3574e | 4331 | sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 4332 | else |
d4f3574e | 4333 | sprintf (addr_string, "*0x%s", paddr_nz (high)); |
c906108c SS |
4334 | break_command_1 (addr_string, flag, from_tty); |
4335 | free (addr_string); | |
4336 | } | |
4337 | else | |
4338 | error ("No function contains the specified address"); | |
4339 | } | |
4340 | else | |
4341 | error ("Unable to set breakpoint at procedure exit"); | |
4342 | } | |
4343 | ||
4344 | ||
4345 | static void | |
4346 | break_at_finish_command_1 (arg, flag, from_tty) | |
4347 | char *arg; | |
4348 | int flag; | |
4349 | int from_tty; | |
4350 | { | |
4351 | char *addr_string, *break_string, *beg_addr_string; | |
4352 | CORE_ADDR low, high; | |
4353 | struct symtabs_and_lines sals; | |
4354 | struct symtab_and_line sal; | |
4355 | struct cleanup *old_chain; | |
4356 | char *extra_args; | |
4357 | int extra_args_len = 0; | |
4358 | int i, if_arg = 0; | |
4359 | ||
4360 | if (!arg || | |
4361 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4362 | { | |
4363 | if (default_breakpoint_valid) | |
4364 | { | |
4365 | if (selected_frame) | |
4366 | { | |
4367 | addr_string = (char *) xmalloc (15); | |
d4f3574e | 4368 | sprintf (addr_string, "*0x%s", paddr_nz (selected_frame->pc)); |
c906108c SS |
4369 | if (arg) |
4370 | if_arg = 1; | |
4371 | } | |
4372 | else | |
4373 | error ("No selected frame."); | |
4374 | } | |
4375 | else | |
4376 | error ("No default breakpoint address now."); | |
4377 | } | |
4378 | else | |
4379 | { | |
4380 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
4381 | strcpy (addr_string, arg); | |
4382 | } | |
4383 | ||
4384 | if (if_arg) | |
4385 | { | |
4386 | extra_args = arg; | |
c5aa993b JM |
4387 | extra_args_len = strlen (arg); |
4388 | } | |
4389 | else if (arg) | |
4390 | { | |
4391 | /* get the stuff after the function name or address */ | |
4392 | extra_args = strchr (arg, ' '); | |
4393 | if (extra_args) | |
4394 | { | |
4395 | extra_args++; | |
4396 | extra_args_len = strlen (extra_args); | |
4397 | } | |
c906108c | 4398 | } |
c906108c SS |
4399 | |
4400 | sals.sals = NULL; | |
4401 | sals.nelts = 0; | |
4402 | ||
c5aa993b JM |
4403 | beg_addr_string = addr_string; |
4404 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
4405 | (char ***) NULL); | |
c906108c SS |
4406 | |
4407 | free (beg_addr_string); | |
4408 | old_chain = make_cleanup (free, sals.sals); | |
4409 | for (i = 0; (i < sals.nelts); i++) | |
4410 | { | |
4411 | sal = sals.sals[i]; | |
c5aa993b | 4412 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c SS |
4413 | { |
4414 | break_string = (char *) xmalloc (extra_args_len + 26); | |
4415 | if (extra_args_len) | |
d4f3574e | 4416 | sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 4417 | else |
d4f3574e | 4418 | sprintf (break_string, "*0x%s", paddr_nz (high)); |
c906108c | 4419 | break_command_1 (break_string, flag, from_tty); |
c5aa993b | 4420 | free (break_string); |
c906108c SS |
4421 | } |
4422 | else | |
4423 | error ("No function contains the specified address"); | |
4424 | } | |
4425 | if (sals.nelts > 1) | |
4426 | { | |
53a5351d JM |
4427 | warning ("Multiple breakpoints were set.\n"); |
4428 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4429 | } |
c5aa993b | 4430 | do_cleanups (old_chain); |
c906108c SS |
4431 | } |
4432 | ||
4433 | ||
4434 | /* Helper function for break_command_1 and disassemble_command. */ | |
4435 | ||
4436 | void | |
4437 | resolve_sal_pc (sal) | |
4438 | struct symtab_and_line *sal; | |
4439 | { | |
4440 | CORE_ADDR pc; | |
4441 | ||
4442 | if (sal->pc == 0 && sal->symtab != NULL) | |
4443 | { | |
4444 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
4445 | error ("No line %d in file \"%s\".", | |
4446 | sal->line, sal->symtab->filename); | |
4447 | sal->pc = pc; | |
4448 | } | |
4449 | ||
4450 | if (sal->section == 0 && sal->symtab != NULL) | |
4451 | { | |
4452 | struct blockvector *bv; | |
c5aa993b JM |
4453 | struct block *b; |
4454 | struct symbol *sym; | |
4455 | int index; | |
c906108c | 4456 | |
c5aa993b | 4457 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
4458 | if (bv != NULL) |
4459 | { | |
c5aa993b | 4460 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
4461 | sym = block_function (b); |
4462 | if (sym != NULL) | |
4463 | { | |
4464 | fixup_symbol_section (sym, sal->symtab->objfile); | |
4465 | sal->section = SYMBOL_BFD_SECTION (sym); | |
4466 | } | |
4467 | else | |
4468 | { | |
4469 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
4470 | have to look harder. This case can be executed if we have |
4471 | line numbers but no functions (as can happen in assembly | |
4472 | source). */ | |
c906108c | 4473 | |
c5aa993b | 4474 | struct minimal_symbol *msym; |
c906108c SS |
4475 | |
4476 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
4477 | if (msym) | |
4478 | sal->section = SYMBOL_BFD_SECTION (msym); | |
4479 | } | |
4480 | } | |
4481 | } | |
4482 | } | |
4483 | ||
4484 | void | |
4485 | break_command (arg, from_tty) | |
4486 | char *arg; | |
4487 | int from_tty; | |
4488 | { | |
4489 | break_command_1 (arg, 0, from_tty); | |
4490 | } | |
4491 | ||
7a292a7a | 4492 | static void |
c906108c SS |
4493 | break_at_finish_command (arg, from_tty) |
4494 | char *arg; | |
4495 | int from_tty; | |
4496 | { | |
4497 | break_at_finish_command_1 (arg, 0, from_tty); | |
4498 | } | |
4499 | ||
7a292a7a | 4500 | static void |
c906108c SS |
4501 | break_at_finish_at_depth_command (arg, from_tty) |
4502 | char *arg; | |
4503 | int from_tty; | |
4504 | { | |
4505 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
4506 | } | |
4507 | ||
4508 | void | |
4509 | tbreak_command (arg, from_tty) | |
4510 | char *arg; | |
4511 | int from_tty; | |
4512 | { | |
4513 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
4514 | } | |
4515 | ||
7a292a7a | 4516 | static void |
c906108c SS |
4517 | tbreak_at_finish_command (arg, from_tty) |
4518 | char *arg; | |
4519 | int from_tty; | |
4520 | { | |
4521 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
4522 | } | |
4523 | ||
4524 | static void | |
4525 | hbreak_command (arg, from_tty) | |
4526 | char *arg; | |
4527 | int from_tty; | |
4528 | { | |
4529 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
4530 | } | |
4531 | ||
4532 | static void | |
4533 | thbreak_command (arg, from_tty) | |
4534 | char *arg; | |
4535 | int from_tty; | |
4536 | { | |
4537 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
4538 | } | |
4539 | ||
4540 | static void | |
4541 | stop_command (arg, from_tty) | |
4542 | char *arg; | |
4543 | int from_tty; | |
4544 | { | |
4545 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
4546 | Usage: stop in <function | address>\n\ | |
4547 | stop at <line>\n"); | |
4548 | } | |
4549 | ||
4550 | static void | |
4551 | stopin_command (arg, from_tty) | |
4552 | char *arg; | |
4553 | int from_tty; | |
4554 | { | |
4555 | int badInput = 0; | |
4556 | ||
c5aa993b | 4557 | if (arg == (char *) NULL) |
c906108c SS |
4558 | badInput = 1; |
4559 | else if (*arg != '*') | |
4560 | { | |
4561 | char *argptr = arg; | |
4562 | int hasColon = 0; | |
4563 | ||
53a5351d JM |
4564 | /* look for a ':'. If this is a line number specification, then |
4565 | say it is bad, otherwise, it should be an address or | |
4566 | function/method name */ | |
c906108c | 4567 | while (*argptr && !hasColon) |
c5aa993b JM |
4568 | { |
4569 | hasColon = (*argptr == ':'); | |
4570 | argptr++; | |
4571 | } | |
c906108c SS |
4572 | |
4573 | if (hasColon) | |
c5aa993b | 4574 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 4575 | else |
c5aa993b | 4576 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
4577 | } |
4578 | ||
4579 | if (badInput) | |
c5aa993b | 4580 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
4581 | else |
4582 | break_command_1 (arg, 0, from_tty); | |
4583 | } | |
4584 | ||
4585 | static void | |
4586 | stopat_command (arg, from_tty) | |
4587 | char *arg; | |
4588 | int from_tty; | |
4589 | { | |
4590 | int badInput = 0; | |
4591 | ||
c5aa993b | 4592 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
4593 | badInput = 1; |
4594 | else | |
4595 | { | |
4596 | char *argptr = arg; | |
4597 | int hasColon = 0; | |
4598 | ||
4599 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 4600 | it is probably a line number. */ |
c906108c | 4601 | while (*argptr && !hasColon) |
c5aa993b JM |
4602 | { |
4603 | hasColon = (*argptr == ':'); | |
4604 | argptr++; | |
4605 | } | |
c906108c SS |
4606 | |
4607 | if (hasColon) | |
c5aa993b | 4608 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 4609 | else |
c5aa993b | 4610 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
4611 | } |
4612 | ||
4613 | if (badInput) | |
c5aa993b | 4614 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
4615 | else |
4616 | break_command_1 (arg, 0, from_tty); | |
4617 | } | |
4618 | ||
4619 | /* ARGSUSED */ | |
53a5351d JM |
4620 | /* accessflag: hw_write: watch write, |
4621 | hw_read: watch read, | |
4622 | hw_access: watch access (read or write) */ | |
c906108c SS |
4623 | static void |
4624 | watch_command_1 (arg, accessflag, from_tty) | |
4625 | char *arg; | |
4626 | int accessflag; | |
4627 | int from_tty; | |
4628 | { | |
4629 | struct breakpoint *b; | |
4630 | struct symtab_and_line sal; | |
4631 | struct expression *exp; | |
4632 | struct block *exp_valid_block; | |
4633 | struct value *val, *mark; | |
4634 | struct frame_info *frame; | |
4635 | struct frame_info *prev_frame = NULL; | |
4636 | char *exp_start = NULL; | |
4637 | char *exp_end = NULL; | |
4638 | char *tok, *end_tok; | |
4639 | int toklen; | |
4640 | char *cond_start = NULL; | |
4641 | char *cond_end = NULL; | |
4642 | struct expression *cond = NULL; | |
4643 | int i, other_type_used, target_resources_ok = 0; | |
4644 | enum bptype bp_type; | |
4645 | int mem_cnt = 0; | |
4646 | ||
c5aa993b JM |
4647 | INIT_SAL (&sal); /* initialize to zeroes */ |
4648 | ||
c906108c SS |
4649 | /* Parse arguments. */ |
4650 | innermost_block = NULL; | |
4651 | exp_start = arg; | |
4652 | exp = parse_exp_1 (&arg, 0, 0); | |
4653 | exp_end = arg; | |
4654 | exp_valid_block = innermost_block; | |
4655 | mark = value_mark (); | |
4656 | val = evaluate_expression (exp); | |
4657 | release_value (val); | |
4658 | if (VALUE_LAZY (val)) | |
4659 | value_fetch_lazy (val); | |
4660 | ||
4661 | tok = arg; | |
4662 | while (*tok == ' ' || *tok == '\t') | |
4663 | tok++; | |
4664 | end_tok = tok; | |
4665 | ||
4666 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4667 | end_tok++; | |
4668 | ||
4669 | toklen = end_tok - tok; | |
4670 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4671 | { | |
4672 | tok = cond_start = end_tok + 1; | |
4673 | cond = parse_exp_1 (&tok, 0, 0); | |
4674 | cond_end = tok; | |
4675 | } | |
4676 | if (*tok) | |
c5aa993b | 4677 | error ("Junk at end of command."); |
c906108c | 4678 | |
53a5351d | 4679 | if (accessflag == hw_read) |
c5aa993b | 4680 | bp_type = bp_read_watchpoint; |
53a5351d | 4681 | else if (accessflag == hw_access) |
c5aa993b JM |
4682 | bp_type = bp_access_watchpoint; |
4683 | else | |
4684 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
4685 | |
4686 | mem_cnt = can_use_hardware_watchpoint (val); | |
4687 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
4688 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
4689 | if (mem_cnt != 0) |
4690 | { | |
4691 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
4692 | target_resources_ok = |
4693 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
4694 | other_type_used); | |
c5aa993b | 4695 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
4696 | error ("Target does not support this type of hardware watchpoint."); |
4697 | ||
c5aa993b | 4698 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 4699 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 4700 | } |
c906108c SS |
4701 | |
4702 | #if defined(HPUXHPPA) | |
c5aa993b | 4703 | /* On HP-UX if you set a h/w |
c906108c SS |
4704 | watchpoint before the "run" command, the inferior dies with a e.g., |
4705 | SIGILL once you start it. I initially believed this was due to a | |
4706 | bad interaction between page protection traps and the initial | |
4707 | startup sequence by the dynamic linker. | |
4708 | ||
4709 | However, I tried avoiding that by having HP-UX's implementation of | |
4710 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid | |
4711 | yet, which forced slow watches before a "run" or "attach", and it | |
4712 | still fails somewhere in the startup code. | |
4713 | ||
4714 | Until I figure out what's happening, I'm disallowing watches altogether | |
4715 | before the "run" or "attach" command. We'll tell the user they must | |
4716 | set watches after getting the program started. */ | |
c5aa993b | 4717 | if (!target_has_execution) |
c906108c SS |
4718 | { |
4719 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
4720 | return; | |
4721 | } | |
4722 | #endif /* HPUXHPPA */ | |
c5aa993b | 4723 | |
c906108c SS |
4724 | /* Now set up the breakpoint. */ |
4725 | b = set_raw_breakpoint (sal); | |
4726 | set_breakpoint_count (breakpoint_count + 1); | |
4727 | b->number = breakpoint_count; | |
4728 | b->disposition = donttouch; | |
4729 | b->exp = exp; | |
4730 | b->exp_valid_block = exp_valid_block; | |
4731 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
4732 | b->val = val; | |
4733 | b->cond = cond; | |
4734 | if (cond_start) | |
4735 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
4736 | else | |
4737 | b->cond_string = 0; | |
c5aa993b | 4738 | |
c906108c SS |
4739 | frame = block_innermost_frame (exp_valid_block); |
4740 | if (frame) | |
4741 | { | |
4742 | prev_frame = get_prev_frame (frame); | |
4743 | b->watchpoint_frame = frame->frame; | |
4744 | } | |
4745 | else | |
c5aa993b | 4746 | b->watchpoint_frame = (CORE_ADDR) 0; |
c906108c SS |
4747 | |
4748 | if (mem_cnt && target_resources_ok > 0) | |
4749 | b->type = bp_type; | |
4750 | else | |
4751 | b->type = bp_watchpoint; | |
4752 | ||
4753 | /* If the expression is "local", then set up a "watchpoint scope" | |
4754 | breakpoint at the point where we've left the scope of the watchpoint | |
4755 | expression. */ | |
4756 | if (innermost_block) | |
4757 | { | |
4758 | if (prev_frame) | |
4759 | { | |
4760 | struct breakpoint *scope_breakpoint; | |
4761 | struct symtab_and_line scope_sal; | |
4762 | ||
4763 | INIT_SAL (&scope_sal); /* initialize to zeroes */ | |
c5aa993b | 4764 | scope_sal.pc = get_frame_pc (prev_frame); |
c906108c SS |
4765 | scope_sal.section = find_pc_overlay (scope_sal.pc); |
4766 | ||
4767 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
4768 | set_breakpoint_count (breakpoint_count + 1); | |
4769 | scope_breakpoint->number = breakpoint_count; | |
4770 | ||
4771 | scope_breakpoint->type = bp_watchpoint_scope; | |
4772 | scope_breakpoint->enable = enabled; | |
4773 | ||
4774 | /* Automatically delete the breakpoint when it hits. */ | |
4775 | scope_breakpoint->disposition = del; | |
4776 | ||
4777 | /* Only break in the proper frame (help with recursion). */ | |
4778 | scope_breakpoint->frame = prev_frame->frame; | |
4779 | ||
4780 | /* Set the address at which we will stop. */ | |
4781 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
4782 | ||
4783 | /* The scope breakpoint is related to the watchpoint. We | |
4784 | will need to act on them together. */ | |
4785 | b->related_breakpoint = scope_breakpoint; | |
4786 | } | |
4787 | } | |
4788 | value_free_to_mark (mark); | |
4789 | mention (b); | |
4790 | } | |
4791 | ||
4792 | /* Return count of locations need to be watched and can be handled | |
4793 | in hardware. If the watchpoint can not be handled | |
4794 | in hardware return zero. */ | |
4795 | ||
4796 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d JM |
4797 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
4798 | ((BYTE_SIZE) <= (REGISTER_SIZE)) | |
4799 | #endif | |
4800 | ||
4801 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
4802 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
4803 | TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN) | |
c906108c SS |
4804 | #endif |
4805 | ||
4806 | static int | |
4807 | can_use_hardware_watchpoint (v) | |
4808 | struct value *v; | |
4809 | { | |
4810 | int found_memory_cnt = 0; | |
4811 | ||
4812 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 4813 | if (!can_use_hw_watchpoints) |
c906108c | 4814 | return 0; |
c5aa993b | 4815 | |
5c44784c JM |
4816 | /* Make sure that the value of the expression depends only upon |
4817 | memory contents, and values computed from them within GDB. If we | |
4818 | find any register references or function calls, we can't use a | |
4819 | hardware watchpoint. | |
4820 | ||
4821 | The idea here is that evaluating an expression generates a series | |
4822 | of values, one holding the value of every subexpression. (The | |
4823 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
4824 | a*b+c.) GDB's values hold almost enough information to establish | |
4825 | the criteria given above --- they identify memory lvalues, | |
4826 | register lvalues, computed values, etcetera. So we can evaluate | |
4827 | the expression, and then scan the chain of values that leaves | |
4828 | behind to decide whether we can detect any possible change to the | |
4829 | expression's final value using only hardware watchpoints. | |
4830 | ||
4831 | However, I don't think that the values returned by inferior | |
4832 | function calls are special in any way. So this function may not | |
4833 | notice that an expression involving an inferior function call | |
4834 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 4835 | for (; v; v = v->next) |
c906108c | 4836 | { |
5c44784c | 4837 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 4838 | { |
5c44784c JM |
4839 | if (VALUE_LAZY (v)) |
4840 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
4841 | we either just used its address (e.g., `a' in `a.b') or | |
4842 | we never needed it at all (e.g., `a' in `a,b'). */ | |
4843 | ; | |
53a5351d | 4844 | else |
5c44784c JM |
4845 | { |
4846 | /* Ahh, memory we actually used! Check if we can cover | |
4847 | it with hardware watchpoints. */ | |
4848 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
4849 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
4850 | ||
4851 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
4852 | return 0; | |
4853 | else | |
4854 | found_memory_cnt++; | |
4855 | } | |
c5aa993b | 4856 | } |
c906108c | 4857 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
4858 | return 0; /* ??? What does this represent? */ |
4859 | else if (v->lval == lval_register) | |
4860 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
4861 | } |
4862 | ||
4863 | /* The expression itself looks suitable for using a hardware | |
4864 | watchpoint, but give the target machine a chance to reject it. */ | |
4865 | return found_memory_cnt; | |
4866 | } | |
4867 | ||
c5aa993b JM |
4868 | static void |
4869 | watch_command (arg, from_tty) | |
c906108c SS |
4870 | char *arg; |
4871 | int from_tty; | |
4872 | { | |
53a5351d | 4873 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
4874 | } |
4875 | ||
c5aa993b JM |
4876 | static void |
4877 | rwatch_command (arg, from_tty) | |
c906108c SS |
4878 | char *arg; |
4879 | int from_tty; | |
4880 | { | |
53a5351d | 4881 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
4882 | } |
4883 | ||
c5aa993b JM |
4884 | static void |
4885 | awatch_command (arg, from_tty) | |
c906108c SS |
4886 | char *arg; |
4887 | int from_tty; | |
4888 | { | |
53a5351d | 4889 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 4890 | } |
c906108c | 4891 | \f |
c5aa993b | 4892 | |
43ff13b4 | 4893 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
4894 | because it uses the mechanisms of breakpoints. */ |
4895 | ||
43ff13b4 JM |
4896 | /* This function is called by fetch_inferior_event via the |
4897 | cmd_continuation pointer, to complete the until command. It takes | |
4898 | care of cleaning up the temporary breakpoints set up by the until | |
4899 | command. */ | |
c2c6d25f JM |
4900 | static void |
4901 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 JM |
4902 | { |
4903 | /* Do all the exec cleanups, which at this point should only be the | |
4904 | one set up in the first part of the until_break_command | |
4905 | function. */ | |
4906 | do_exec_cleanups (ALL_CLEANUPS); | |
4907 | } | |
4908 | ||
c906108c SS |
4909 | /* ARGSUSED */ |
4910 | void | |
4911 | until_break_command (arg, from_tty) | |
4912 | char *arg; | |
4913 | int from_tty; | |
4914 | { | |
4915 | struct symtabs_and_lines sals; | |
4916 | struct symtab_and_line sal; | |
4917 | struct frame_info *prev_frame = get_prev_frame (selected_frame); | |
4918 | struct breakpoint *breakpoint; | |
4919 | struct cleanup *old_chain; | |
4920 | ||
4921 | clear_proceed_status (); | |
4922 | ||
4923 | /* Set a breakpoint where the user wants it and at return from | |
4924 | this function */ | |
c5aa993b | 4925 | |
c906108c SS |
4926 | if (default_breakpoint_valid) |
4927 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 4928 | default_breakpoint_line, (char ***) NULL); |
c906108c | 4929 | else |
53a5351d JM |
4930 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
4931 | 0, (char ***) NULL); | |
c5aa993b | 4932 | |
c906108c SS |
4933 | if (sals.nelts != 1) |
4934 | error ("Couldn't get information on specified line."); | |
c5aa993b | 4935 | |
c906108c | 4936 | sal = sals.sals[0]; |
c5aa993b JM |
4937 | free ((PTR) sals.sals); /* malloc'd, so freed */ |
4938 | ||
c906108c SS |
4939 | if (*arg) |
4940 | error ("Junk at end of arguments."); | |
c5aa993b | 4941 | |
c906108c | 4942 | resolve_sal_pc (&sal); |
c5aa993b | 4943 | |
c906108c | 4944 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
c5aa993b | 4945 | |
6426a772 | 4946 | if (!event_loop_p || !target_can_async_p ()) |
53a5351d JM |
4947 | old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, |
4948 | breakpoint); | |
43ff13b4 JM |
4949 | else |
4950 | make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); | |
4951 | ||
4952 | /* If we are running asynchronously, and the target supports async | |
4953 | execution, we are not waiting for the target to stop, in the call | |
4954 | tp proceed, below. This means that we cannot delete the | |
4955 | brekpoints until the target has actually stopped. The only place | |
4956 | where we get a chance to do that is in fetch_inferior_event, so | |
4957 | we must set things up for that. */ | |
4958 | ||
6426a772 | 4959 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 JM |
4960 | { |
4961 | /* In this case we don't need args for the continuation, because | |
c5aa993b JM |
4962 | all it needs to do is do the cleanups in the |
4963 | exec_cleanup_chain, which will be only those inserted by this | |
4964 | function. We can get away by using ALL_CLEANUPS. */ | |
43ff13b4 JM |
4965 | add_continuation (until_break_command_continuation, NULL); |
4966 | } | |
c906108c SS |
4967 | |
4968 | /* Keep within the current frame */ | |
c5aa993b | 4969 | |
c906108c SS |
4970 | if (prev_frame) |
4971 | { | |
4972 | sal = find_pc_line (prev_frame->pc, 0); | |
4973 | sal.pc = prev_frame->pc; | |
4974 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); | |
6426a772 | 4975 | if (!event_loop_p || !target_can_async_p ()) |
43ff13b4 JM |
4976 | make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
4977 | else | |
4978 | make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); | |
c906108c | 4979 | } |
c5aa993b | 4980 | |
c906108c | 4981 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
4982 | /* Do the cleanups now, anly if we are not running asynchronously, |
4983 | of if we are, but the target is still synchronous. */ | |
6426a772 | 4984 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 4985 | do_cleanups (old_chain); |
c906108c SS |
4986 | } |
4987 | \f | |
4988 | #if 0 | |
4989 | /* These aren't used; I don't konw what they were for. */ | |
4990 | /* Set a breakpoint at the catch clause for NAME. */ | |
4991 | static int | |
4992 | catch_breakpoint (name) | |
4993 | char *name; | |
4994 | { | |
4995 | } | |
4996 | ||
4997 | static int | |
4998 | disable_catch_breakpoint () | |
4999 | { | |
5000 | } | |
5001 | ||
5002 | static int | |
5003 | delete_catch_breakpoint () | |
5004 | { | |
5005 | } | |
5006 | ||
5007 | static int | |
5008 | enable_catch_breakpoint () | |
5009 | { | |
5010 | } | |
5011 | #endif /* 0 */ | |
5012 | ||
5013 | struct sal_chain | |
5014 | { | |
5015 | struct sal_chain *next; | |
5016 | struct symtab_and_line sal; | |
5017 | }; | |
5018 | ||
7a292a7a | 5019 | #if 0 |
c906108c SS |
5020 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
5021 | had been commented out in the v.4.16 sources, and stays | |
5022 | disabled there now because "catch NAME" syntax isn't allowed. | |
5023 | pai/1997-07-11 */ | |
5024 | /* This isn't used; I don't know what it was for. */ | |
5025 | /* For each catch clause identified in ARGS, run FUNCTION | |
5026 | with that clause as an argument. */ | |
5027 | static struct symtabs_and_lines | |
5028 | map_catch_names (args, function) | |
5029 | char *args; | |
c5aa993b | 5030 | int (*function) (); |
c906108c SS |
5031 | { |
5032 | register char *p = args; | |
5033 | register char *p1; | |
5034 | struct symtabs_and_lines sals; | |
5035 | #if 0 | |
5036 | struct sal_chain *sal_chain = 0; | |
5037 | #endif | |
5038 | ||
5039 | if (p == 0) | |
5040 | error_no_arg ("one or more catch names"); | |
5041 | ||
5042 | sals.nelts = 0; | |
5043 | sals.sals = NULL; | |
5044 | ||
5045 | while (*p) | |
5046 | { | |
5047 | p1 = p; | |
5048 | /* Don't swallow conditional part. */ | |
5049 | if (p1[0] == 'i' && p1[1] == 'f' | |
5050 | && (p1[2] == ' ' || p1[2] == '\t')) | |
5051 | break; | |
5052 | ||
5053 | if (isalpha (*p1)) | |
5054 | { | |
5055 | p1++; | |
5056 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
5057 | p1++; | |
5058 | } | |
5059 | ||
5060 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
5061 | error ("Arguments must be catch names."); | |
5062 | ||
5063 | *p1 = 0; | |
5064 | #if 0 | |
5065 | if (function (p)) | |
5066 | { | |
5067 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5068 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
5069 | next->next = sal_chain; |
5070 | next->sal = get_catch_sal (p); | |
5071 | sal_chain = next; | |
5072 | goto win; | |
5073 | } | |
5074 | #endif | |
5075 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
5076 | #if 0 | |
5077 | win: | |
5078 | #endif | |
5079 | p = p1; | |
c5aa993b JM |
5080 | while (*p == ' ' || *p == '\t') |
5081 | p++; | |
c906108c SS |
5082 | } |
5083 | } | |
7a292a7a | 5084 | #endif |
c906108c SS |
5085 | |
5086 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
5087 | ||
5088 | static struct symtabs_and_lines | |
5089 | get_catch_sals (this_level_only) | |
5090 | int this_level_only; | |
5091 | { | |
5092 | register struct blockvector *bl; | |
5093 | register struct block *block; | |
5094 | int index, have_default = 0; | |
5095 | CORE_ADDR pc; | |
5096 | struct symtabs_and_lines sals; | |
5097 | struct sal_chain *sal_chain = 0; | |
5098 | char *blocks_searched; | |
5099 | ||
5100 | /* Not sure whether an error message is always the correct response, | |
5101 | but it's better than a core dump. */ | |
5102 | if (selected_frame == NULL) | |
5103 | error ("No selected frame."); | |
5104 | block = get_frame_block (selected_frame); | |
5105 | pc = selected_frame->pc; | |
5106 | ||
5107 | sals.nelts = 0; | |
5108 | sals.sals = NULL; | |
5109 | ||
5110 | if (block == 0) | |
5111 | error ("No symbol table info available.\n"); | |
5112 | ||
5113 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
5114 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5115 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5116 | ||
5117 | while (block != 0) | |
5118 | { | |
5119 | CORE_ADDR end = BLOCK_END (block) - 4; | |
5120 | int last_index; | |
5121 | ||
5122 | if (bl != blockvector_for_pc (end, &index)) | |
5123 | error ("blockvector blotch"); | |
5124 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
5125 | error ("blockvector botch"); | |
5126 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
5127 | index += 1; | |
5128 | ||
5129 | /* Don't print out blocks that have gone by. */ | |
5130 | while (index < last_index | |
5131 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
5132 | index++; | |
5133 | ||
5134 | while (index < last_index | |
5135 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
5136 | { | |
5137 | if (blocks_searched[index] == 0) | |
5138 | { | |
5139 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
5140 | int nsyms; | |
5141 | register int i; | |
5142 | register struct symbol *sym; | |
5143 | ||
5144 | nsyms = BLOCK_NSYMS (b); | |
5145 | ||
5146 | for (i = 0; i < nsyms; i++) | |
5147 | { | |
5148 | sym = BLOCK_SYM (b, i); | |
5149 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
5150 | { | |
5151 | if (have_default) | |
5152 | continue; | |
5153 | have_default = 1; | |
5154 | } | |
5155 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
5156 | { | |
5157 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5158 | alloca (sizeof (struct sal_chain)); |
c906108c | 5159 | next->next = sal_chain; |
53a5351d JM |
5160 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
5161 | 0); | |
c906108c SS |
5162 | sal_chain = next; |
5163 | } | |
5164 | } | |
5165 | blocks_searched[index] = 1; | |
5166 | } | |
5167 | index++; | |
5168 | } | |
5169 | if (have_default) | |
5170 | break; | |
5171 | if (sal_chain && this_level_only) | |
5172 | break; | |
5173 | ||
5174 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
5175 | Don't continue to its superblock, the block of |
5176 | per-file symbols. */ | |
c906108c SS |
5177 | if (BLOCK_FUNCTION (block)) |
5178 | break; | |
5179 | block = BLOCK_SUPERBLOCK (block); | |
5180 | } | |
5181 | ||
5182 | if (sal_chain) | |
5183 | { | |
5184 | struct sal_chain *tmp_chain; | |
5185 | ||
5186 | /* Count the number of entries. */ | |
5187 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
5188 | tmp_chain = tmp_chain->next) | |
5189 | index++; | |
5190 | ||
5191 | sals.nelts = index; | |
5192 | sals.sals = (struct symtab_and_line *) | |
5193 | xmalloc (index * sizeof (struct symtab_and_line)); | |
5194 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
5195 | sals.sals[index] = sal_chain->sal; | |
5196 | } | |
5197 | ||
5198 | return sals; | |
5199 | } | |
5200 | ||
5201 | static void | |
5202 | ep_skip_leading_whitespace (s) | |
7a292a7a | 5203 | char **s; |
c906108c | 5204 | { |
c5aa993b JM |
5205 | if ((s == NULL) || (*s == NULL)) |
5206 | return; | |
5207 | while (isspace (**s)) | |
5208 | *s += 1; | |
c906108c | 5209 | } |
c5aa993b | 5210 | |
c906108c SS |
5211 | /* This function examines a string, and attempts to find a token |
5212 | that might be an event name in the leading characters. If a | |
5213 | possible match is found, a pointer to the last character of | |
5214 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5215 | |
c906108c SS |
5216 | static char * |
5217 | ep_find_event_name_end (arg) | |
7a292a7a | 5218 | char *arg; |
c906108c | 5219 | { |
c5aa993b JM |
5220 | char *s = arg; |
5221 | char *event_name_end = NULL; | |
5222 | ||
c906108c SS |
5223 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5224 | if (arg == NULL) | |
5225 | return NULL; | |
c5aa993b | 5226 | |
c906108c | 5227 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5228 | Basically, we're looking for alphanumerics and underscores; |
5229 | anything else delimites the token. */ | |
c906108c SS |
5230 | while (*s != '\0') |
5231 | { | |
c5aa993b JM |
5232 | if (!isalnum (*s) && (*s != '_')) |
5233 | break; | |
c906108c SS |
5234 | event_name_end = s; |
5235 | s++; | |
5236 | } | |
c5aa993b | 5237 | |
c906108c SS |
5238 | return event_name_end; |
5239 | } | |
5240 | ||
c5aa993b | 5241 | |
c906108c SS |
5242 | /* This function attempts to parse an optional "if <cond>" clause |
5243 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5244 | |
c906108c SS |
5245 | Else, it returns a pointer to the condition string. (It does not |
5246 | attempt to evaluate the string against a particular block.) And, | |
5247 | it updates arg to point to the first character following the parsed | |
5248 | if clause in the arg string. */ | |
53a5351d | 5249 | |
c906108c SS |
5250 | static char * |
5251 | ep_parse_optional_if_clause (arg) | |
7a292a7a | 5252 | char **arg; |
c906108c | 5253 | { |
c5aa993b JM |
5254 | char *cond_string; |
5255 | ||
5256 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5257 | return NULL; |
c5aa993b | 5258 | |
c906108c SS |
5259 | /* Skip the "if" keyword. */ |
5260 | (*arg) += 2; | |
c5aa993b | 5261 | |
c906108c SS |
5262 | /* Skip any extra leading whitespace, and record the start of the |
5263 | condition string. */ | |
5264 | ep_skip_leading_whitespace (arg); | |
5265 | cond_string = *arg; | |
c5aa993b | 5266 | |
c906108c SS |
5267 | /* Assume that the condition occupies the remainder of the arg string. */ |
5268 | (*arg) += strlen (cond_string); | |
c5aa993b | 5269 | |
c906108c SS |
5270 | return cond_string; |
5271 | } | |
c5aa993b | 5272 | |
c906108c SS |
5273 | /* This function attempts to parse an optional filename from the arg |
5274 | string. If one is not found, it returns NULL. | |
c5aa993b | 5275 | |
c906108c SS |
5276 | Else, it returns a pointer to the parsed filename. (This function |
5277 | makes no attempt to verify that a file of that name exists, or is | |
5278 | accessible.) And, it updates arg to point to the first character | |
5279 | following the parsed filename in the arg string. | |
c5aa993b | 5280 | |
c906108c SS |
5281 | Note that clients needing to preserve the returned filename for |
5282 | future access should copy it to their own buffers. */ | |
5283 | static char * | |
5284 | ep_parse_optional_filename (arg) | |
7a292a7a | 5285 | char **arg; |
c906108c | 5286 | { |
c5aa993b JM |
5287 | static char filename[1024]; |
5288 | char *arg_p = *arg; | |
5289 | int i; | |
5290 | char c; | |
5291 | ||
c906108c SS |
5292 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5293 | return NULL; | |
c5aa993b JM |
5294 | |
5295 | for (i = 0;; i++) | |
c906108c SS |
5296 | { |
5297 | c = *arg_p; | |
5298 | if (isspace (c)) | |
c5aa993b | 5299 | c = '\0'; |
c906108c SS |
5300 | filename[i] = c; |
5301 | if (c == '\0') | |
c5aa993b | 5302 | break; |
c906108c SS |
5303 | arg_p++; |
5304 | } | |
5305 | *arg = arg_p; | |
c5aa993b | 5306 | |
c906108c SS |
5307 | return filename; |
5308 | } | |
c5aa993b | 5309 | |
c906108c SS |
5310 | /* Commands to deal with catching events, such as signals, exceptions, |
5311 | process start/exit, etc. */ | |
c5aa993b JM |
5312 | |
5313 | typedef enum | |
5314 | { | |
5315 | catch_fork, catch_vfork | |
5316 | } | |
5317 | catch_fork_kind; | |
5318 | ||
e514a9d6 | 5319 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
53a5351d JM |
5320 | static void catch_fork_command_1 PARAMS ((catch_fork_kind fork_kind, |
5321 | char *arg, | |
5322 | int tempflag, | |
5323 | int from_tty)); | |
7a292a7a | 5324 | |
c906108c SS |
5325 | static void |
5326 | catch_fork_command_1 (fork_kind, arg, tempflag, from_tty) | |
7a292a7a SS |
5327 | catch_fork_kind fork_kind; |
5328 | char *arg; | |
5329 | int tempflag; | |
5330 | int from_tty; | |
c906108c | 5331 | { |
c5aa993b JM |
5332 | char *cond_string = NULL; |
5333 | ||
c906108c | 5334 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5335 | |
c906108c | 5336 | /* The allowed syntax is: |
c5aa993b JM |
5337 | catch [v]fork |
5338 | catch [v]fork if <cond> | |
5339 | ||
c906108c SS |
5340 | First, check if there's an if clause. */ |
5341 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 5342 | |
c906108c SS |
5343 | if ((*arg != '\0') && !isspace (*arg)) |
5344 | error ("Junk at end of arguments."); | |
c5aa993b | 5345 | |
c906108c SS |
5346 | /* If this target supports it, create a fork or vfork catchpoint |
5347 | and enable reporting of such events. */ | |
c5aa993b JM |
5348 | switch (fork_kind) |
5349 | { | |
5350 | case catch_fork: | |
c906108c SS |
5351 | create_fork_event_catchpoint (tempflag, cond_string); |
5352 | break; | |
c5aa993b | 5353 | case catch_vfork: |
c906108c SS |
5354 | create_vfork_event_catchpoint (tempflag, cond_string); |
5355 | break; | |
c5aa993b | 5356 | default: |
c906108c SS |
5357 | error ("unsupported or unknown fork kind; cannot catch it"); |
5358 | break; | |
c5aa993b | 5359 | } |
c906108c | 5360 | } |
e514a9d6 | 5361 | #endif |
c906108c | 5362 | |
e514a9d6 | 5363 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c SS |
5364 | static void |
5365 | catch_exec_command_1 (arg, tempflag, from_tty) | |
7a292a7a SS |
5366 | char *arg; |
5367 | int tempflag; | |
5368 | int from_tty; | |
c906108c | 5369 | { |
c5aa993b | 5370 | char *cond_string = NULL; |
c906108c SS |
5371 | |
5372 | ep_skip_leading_whitespace (&arg); | |
5373 | ||
5374 | /* The allowed syntax is: | |
c5aa993b JM |
5375 | catch exec |
5376 | catch exec if <cond> | |
c906108c SS |
5377 | |
5378 | First, check if there's an if clause. */ | |
5379 | cond_string = ep_parse_optional_if_clause (&arg); | |
5380 | ||
5381 | if ((*arg != '\0') && !isspace (*arg)) | |
5382 | error ("Junk at end of arguments."); | |
5383 | ||
5384 | /* If this target supports it, create an exec catchpoint | |
5385 | and enable reporting of such events. */ | |
5386 | create_exec_event_catchpoint (tempflag, cond_string); | |
5387 | } | |
e514a9d6 | 5388 | #endif |
c5aa993b | 5389 | |
c906108c SS |
5390 | #if defined(SOLIB_ADD) |
5391 | static void | |
5392 | catch_load_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
5393 | char *arg; |
5394 | int tempflag; | |
5395 | int from_tty; | |
c906108c | 5396 | { |
c5aa993b JM |
5397 | char *dll_pathname = NULL; |
5398 | char *cond_string = NULL; | |
5399 | ||
c906108c | 5400 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5401 | |
c906108c | 5402 | /* The allowed syntax is: |
c5aa993b JM |
5403 | catch load |
5404 | catch load if <cond> | |
5405 | catch load <filename> | |
5406 | catch load <filename> if <cond> | |
5407 | ||
c906108c SS |
5408 | The user is not allowed to specify the <filename> after an |
5409 | if clause. | |
c5aa993b | 5410 | |
c906108c | 5411 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 5412 | |
c906108c SS |
5413 | First, check if there's an if clause. If so, then there |
5414 | cannot be a filename. */ | |
5415 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 5416 | |
c906108c SS |
5417 | /* If there was an if clause, then there cannot be a filename. |
5418 | Else, there might be a filename and an if clause. */ | |
5419 | if (cond_string == NULL) | |
5420 | { | |
5421 | dll_pathname = ep_parse_optional_filename (&arg); | |
5422 | ep_skip_leading_whitespace (&arg); | |
5423 | cond_string = ep_parse_optional_if_clause (&arg); | |
5424 | } | |
c5aa993b | 5425 | |
c906108c SS |
5426 | if ((*arg != '\0') && !isspace (*arg)) |
5427 | error ("Junk at end of arguments."); | |
c5aa993b | 5428 | |
c906108c SS |
5429 | /* Create a load breakpoint that only triggers when a load of |
5430 | the specified dll (or any dll, if no pathname was specified) | |
5431 | occurs. */ | |
53a5351d JM |
5432 | SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, |
5433 | dll_pathname, cond_string); | |
c906108c | 5434 | } |
c5aa993b | 5435 | |
c906108c SS |
5436 | static void |
5437 | catch_unload_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
5438 | char *arg; |
5439 | int tempflag; | |
5440 | int from_tty; | |
c906108c | 5441 | { |
c5aa993b JM |
5442 | char *dll_pathname = NULL; |
5443 | char *cond_string = NULL; | |
5444 | ||
c906108c | 5445 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5446 | |
c906108c | 5447 | /* The allowed syntax is: |
c5aa993b JM |
5448 | catch unload |
5449 | catch unload if <cond> | |
5450 | catch unload <filename> | |
5451 | catch unload <filename> if <cond> | |
5452 | ||
c906108c SS |
5453 | The user is not allowed to specify the <filename> after an |
5454 | if clause. | |
c5aa993b | 5455 | |
c906108c | 5456 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 5457 | |
c906108c SS |
5458 | First, check if there's an if clause. If so, then there |
5459 | cannot be a filename. */ | |
5460 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 5461 | |
c906108c SS |
5462 | /* If there was an if clause, then there cannot be a filename. |
5463 | Else, there might be a filename and an if clause. */ | |
5464 | if (cond_string == NULL) | |
5465 | { | |
5466 | dll_pathname = ep_parse_optional_filename (&arg); | |
5467 | ep_skip_leading_whitespace (&arg); | |
5468 | cond_string = ep_parse_optional_if_clause (&arg); | |
5469 | } | |
c5aa993b | 5470 | |
c906108c SS |
5471 | if ((*arg != '\0') && !isspace (*arg)) |
5472 | error ("Junk at end of arguments."); | |
c5aa993b | 5473 | |
c906108c SS |
5474 | /* Create an unload breakpoint that only triggers when an unload of |
5475 | the specified dll (or any dll, if no pathname was specified) | |
5476 | occurs. */ | |
53a5351d JM |
5477 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, |
5478 | dll_pathname, cond_string); | |
c906108c SS |
5479 | } |
5480 | #endif /* SOLIB_ADD */ | |
5481 | ||
5482 | /* Commands to deal with catching exceptions. */ | |
5483 | ||
5484 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 5485 | exception event callback */ |
c906108c SS |
5486 | |
5487 | static void | |
5488 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal) | |
7a292a7a SS |
5489 | int tempflag; |
5490 | char *cond_string; | |
5491 | enum exception_event_kind ex_event; | |
5492 | struct symtab_and_line *sal; | |
c906108c | 5493 | { |
c5aa993b | 5494 | struct breakpoint *b; |
c5aa993b | 5495 | int thread = -1; /* All threads. */ |
c906108c | 5496 | |
c5aa993b | 5497 | if (!sal) /* no exception support? */ |
c906108c SS |
5498 | return; |
5499 | ||
5500 | b = set_raw_breakpoint (*sal); | |
5501 | set_breakpoint_count (breakpoint_count + 1); | |
5502 | b->number = breakpoint_count; | |
5503 | b->cond = NULL; | |
53a5351d JM |
5504 | b->cond_string = (cond_string == NULL) ? |
5505 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
5506 | b->thread = thread; |
5507 | b->addr_string = NULL; | |
5508 | b->enable = enabled; | |
5509 | b->disposition = tempflag ? del : donttouch; | |
5510 | switch (ex_event) | |
5511 | { | |
c5aa993b JM |
5512 | case EX_EVENT_THROW: |
5513 | b->type = bp_catch_throw; | |
5514 | break; | |
5515 | case EX_EVENT_CATCH: | |
5516 | b->type = bp_catch_catch; | |
5517 | break; | |
5518 | default: /* error condition */ | |
5519 | b->type = bp_none; | |
5520 | b->enable = disabled; | |
5521 | error ("Internal error -- invalid catchpoint kind"); | |
c906108c SS |
5522 | } |
5523 | mention (b); | |
5524 | } | |
5525 | ||
c5aa993b | 5526 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
5527 | |
5528 | static void | |
5529 | catch_exception_command_1 (ex_event, arg, tempflag, from_tty) | |
7a292a7a SS |
5530 | enum exception_event_kind ex_event; |
5531 | char *arg; | |
5532 | int tempflag; | |
5533 | int from_tty; | |
c906108c | 5534 | { |
c5aa993b JM |
5535 | char *cond_string = NULL; |
5536 | struct symtab_and_line *sal = NULL; | |
5537 | ||
c906108c | 5538 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5539 | |
c906108c SS |
5540 | cond_string = ep_parse_optional_if_clause (&arg); |
5541 | ||
5542 | if ((*arg != '\0') && !isspace (*arg)) | |
5543 | error ("Junk at end of arguments."); | |
5544 | ||
5545 | if ((ex_event != EX_EVENT_THROW) && | |
5546 | (ex_event != EX_EVENT_CATCH)) | |
5547 | error ("Unsupported or unknown exception event; cannot catch it"); | |
5548 | ||
5549 | /* See if we can find a callback routine */ | |
5550 | sal = target_enable_exception_callback (ex_event, 1); | |
5551 | ||
c5aa993b | 5552 | if (sal) |
c906108c SS |
5553 | { |
5554 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 5555 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 5556 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 5557 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 5558 | else |
53a5351d | 5559 | return; /* something went wrong with setting up callbacks */ |
c906108c | 5560 | } |
c5aa993b | 5561 | else |
c906108c SS |
5562 | { |
5563 | /* No callbacks from runtime system for exceptions. | |
5564 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
5565 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
5566 | { |
5567 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
5568 | } | |
c906108c | 5569 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
5570 | { |
5571 | /* Set a breakpoint on __raise_exception () */ | |
5572 | ||
53a5351d JM |
5573 | warning ("Unsupported with this platform/compiler combination."); |
5574 | warning ("Perhaps you can achieve the effect you want by setting"); | |
5575 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 5576 | } |
c906108c SS |
5577 | } |
5578 | } | |
5579 | ||
5580 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
5581 | inside a catch_errors */ | |
5582 | ||
5583 | static int | |
5584 | cover_target_enable_exception_callback (arg) | |
c5aa993b | 5585 | PTR arg; |
c906108c SS |
5586 | { |
5587 | args_for_catchpoint_enable *args = arg; | |
5588 | struct symtab_and_line *sal; | |
5589 | sal = target_enable_exception_callback (args->kind, args->enable); | |
5590 | if (sal == NULL) | |
5591 | return 0; | |
5592 | else if (sal == (struct symtab_and_line *) -1) | |
5593 | return -1; | |
5594 | else | |
c5aa993b | 5595 | return 1; /*is valid */ |
c906108c SS |
5596 | } |
5597 | ||
5598 | ||
5599 | ||
5600 | /* This is the original v.4.16 and earlier version of the | |
5601 | catch_command_1() function. Now that other flavours of "catch" | |
5602 | have been introduced, and since exception handling can be handled | |
5603 | in other ways (through target ops) also, this is used only for the | |
5604 | GNU C++ exception handling system. | |
5605 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
5606 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
5607 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 5608 | |
c906108c SS |
5609 | Called from catch_exception_command_1 () */ |
5610 | ||
5611 | ||
5612 | static void | |
5613 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty) | |
5614 | char *arg; | |
5615 | int tempflag; | |
5616 | int from_tty; | |
5617 | { | |
5618 | /* First, translate ARG into something we can deal with in terms | |
5619 | of breakpoints. */ | |
5620 | ||
5621 | struct symtabs_and_lines sals; | |
5622 | struct symtab_and_line sal; | |
5623 | register struct expression *cond = 0; | |
5624 | register struct breakpoint *b; | |
5625 | char *save_arg; | |
5626 | int i; | |
5627 | ||
c5aa993b | 5628 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
5629 | |
5630 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
5631 | are breakpointed. */ | |
5632 | ||
c5aa993b | 5633 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
5634 | && (arg[2] == ' ' || arg[2] == '\t'))) |
5635 | { | |
5636 | /* Grab all active catch clauses. */ | |
5637 | sals = get_catch_sals (0); | |
5638 | } | |
5639 | else | |
5640 | { | |
5641 | /* Grab selected catch clauses. */ | |
5642 | error ("catch NAME not implemented"); | |
5643 | ||
5644 | #if 0 | |
5645 | /* Not sure why this code has been disabled. I'm leaving | |
5646 | it disabled. We can never come here now anyway | |
5647 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 5648 | pai/1997-07-11 */ |
c906108c SS |
5649 | |
5650 | /* This isn't used; I don't know what it was for. */ | |
5651 | sals = map_catch_names (arg, catch_breakpoint); | |
5652 | #endif | |
5653 | } | |
5654 | ||
c5aa993b | 5655 | if (!sals.nelts) |
c906108c SS |
5656 | return; |
5657 | ||
5658 | save_arg = arg; | |
5659 | for (i = 0; i < sals.nelts; i++) | |
5660 | { | |
5661 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 5662 | |
c906108c SS |
5663 | while (arg && *arg) |
5664 | { | |
5665 | if (arg[0] == 'i' && arg[1] == 'f' | |
5666 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 5667 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
5668 | block_for_pc (sals.sals[i].pc), 0); |
5669 | else | |
5670 | error ("Junk at end of arguments."); | |
5671 | } | |
5672 | arg = save_arg; | |
5673 | } | |
5674 | ||
5675 | for (i = 0; i < sals.nelts; i++) | |
5676 | { | |
5677 | sal = sals.sals[i]; | |
5678 | ||
5679 | if (from_tty) | |
5680 | describe_other_breakpoints (sal.pc, sal.section); | |
5681 | ||
5682 | b = set_raw_breakpoint (sal); | |
5683 | set_breakpoint_count (breakpoint_count + 1); | |
5684 | b->number = breakpoint_count; | |
53a5351d JM |
5685 | |
5686 | /* Important -- this is an ordinary breakpoint. For platforms | |
5687 | with callback support for exceptions, | |
5688 | create_exception_catchpoint() will create special bp types | |
5689 | (bp_catch_catch and bp_catch_throw), and there is code in | |
5690 | insert_breakpoints() and elsewhere that depends on that. */ | |
5691 | b->type = bp_breakpoint; | |
c906108c SS |
5692 | |
5693 | b->cond = cond; | |
5694 | b->enable = enabled; | |
5695 | b->disposition = tempflag ? del : donttouch; | |
5696 | ||
5697 | mention (b); | |
5698 | } | |
5699 | ||
5700 | if (sals.nelts > 1) | |
5701 | { | |
53a5351d JM |
5702 | warning ("Multiple breakpoints were set."); |
5703 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5704 | } |
c5aa993b | 5705 | free ((PTR) sals.sals); |
c906108c SS |
5706 | } |
5707 | ||
5708 | #if 0 | |
5709 | /* This creates a temporary internal breakpoint | |
5710 | just to placate infrun */ | |
5711 | static struct breakpoint * | |
5712 | create_temp_exception_breakpoint (pc) | |
c5aa993b | 5713 | CORE_ADDR pc; |
c906108c SS |
5714 | { |
5715 | struct symtab_and_line sal; | |
5716 | struct breakpoint *b; | |
5717 | ||
c5aa993b | 5718 | INIT_SAL (&sal); |
c906108c SS |
5719 | sal.pc = pc; |
5720 | sal.symtab = NULL; | |
5721 | sal.line = 0; | |
5722 | ||
5723 | b = set_raw_breakpoint (sal); | |
5724 | if (!b) | |
5725 | error ("Internal error -- couldn't set temp exception breakpoint"); | |
5726 | ||
5727 | b->type = bp_breakpoint; | |
5728 | b->disposition = del; | |
5729 | b->enable = enabled; | |
5730 | b->silent = 1; | |
5731 | b->number = internal_breakpoint_number--; | |
5732 | return b; | |
5733 | } | |
5734 | #endif | |
5735 | ||
5736 | static void | |
5737 | catch_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
5738 | char *arg; |
5739 | int tempflag; | |
5740 | int from_tty; | |
c906108c | 5741 | { |
c5aa993b | 5742 | |
c906108c SS |
5743 | /* The first argument may be an event name, such as "start" or "load". |
5744 | If so, then handle it as such. If it doesn't match an event name, | |
5745 | then attempt to interpret it as an exception name. (This latter is | |
5746 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 5747 | |
c906108c | 5748 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
5749 | char *arg1_start = arg; |
5750 | char *arg1_end; | |
5751 | int arg1_length; | |
5752 | ||
c906108c SS |
5753 | if (arg1_start == NULL) |
5754 | { | |
c5aa993b | 5755 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
5756 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
5757 | /* return; */ | |
c5aa993b | 5758 | /* Now, this is not allowed */ |
c906108c SS |
5759 | error ("Catch requires an event name."); |
5760 | ||
5761 | } | |
5762 | arg1_end = ep_find_event_name_end (arg1_start); | |
5763 | if (arg1_end == NULL) | |
5764 | error ("catch requires an event"); | |
5765 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 5766 | |
c906108c SS |
5767 | /* Try to match what we found against known event names. */ |
5768 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
5769 | { | |
5770 | error ("Catch of signal not yet implemented"); | |
5771 | } | |
5772 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
5773 | { | |
53a5351d JM |
5774 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
5775 | tempflag, from_tty); | |
c906108c SS |
5776 | } |
5777 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
5778 | { | |
53a5351d JM |
5779 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
5780 | tempflag, from_tty); | |
c906108c SS |
5781 | } |
5782 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
5783 | { | |
5784 | error ("Catch of thread_start not yet implemented"); | |
5785 | } | |
5786 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
5787 | { | |
5788 | error ("Catch of thread_exit not yet implemented"); | |
5789 | } | |
5790 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
5791 | { | |
5792 | error ("Catch of thread_join not yet implemented"); | |
5793 | } | |
5794 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
5795 | { | |
5796 | error ("Catch of start not yet implemented"); | |
5797 | } | |
5798 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
5799 | { | |
5800 | error ("Catch of exit not yet implemented"); | |
5801 | } | |
5802 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
5803 | { | |
5804 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 5805 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
5806 | #else |
5807 | error ("Catch of fork not yet implemented"); | |
5808 | #endif | |
5809 | } | |
5810 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
5811 | { | |
5812 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 5813 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
5814 | #else |
5815 | error ("Catch of vfork not yet implemented"); | |
5816 | #endif | |
5817 | } | |
5818 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
5819 | { | |
5820 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 5821 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
5822 | #else |
5823 | error ("Catch of exec not yet implemented"); | |
5824 | #endif | |
5825 | } | |
5826 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
5827 | { | |
5828 | #if defined(SOLIB_ADD) | |
c5aa993b | 5829 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
5830 | #else |
5831 | error ("Catch of load not implemented"); | |
5832 | #endif | |
5833 | } | |
5834 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
5835 | { | |
5836 | #if defined(SOLIB_ADD) | |
c5aa993b | 5837 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
5838 | #else |
5839 | error ("Catch of load not implemented"); | |
5840 | #endif | |
5841 | } | |
5842 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
5843 | { | |
5844 | error ("Catch of stop not yet implemented"); | |
5845 | } | |
c5aa993b | 5846 | |
c906108c SS |
5847 | /* This doesn't appear to be an event name */ |
5848 | ||
5849 | else | |
5850 | { | |
5851 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 5852 | as the name of an exception */ |
c906108c | 5853 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 5854 | /* Now this is not allowed */ |
c906108c SS |
5855 | error ("Unknown event kind specified for catch"); |
5856 | ||
5857 | } | |
5858 | } | |
5859 | ||
5860 | /* Used by the gui, could be made a worker for other things. */ | |
5861 | ||
5862 | struct breakpoint * | |
5863 | set_breakpoint_sal (sal) | |
5864 | struct symtab_and_line sal; | |
5865 | { | |
5866 | struct breakpoint *b; | |
5867 | b = set_raw_breakpoint (sal); | |
5868 | set_breakpoint_count (breakpoint_count + 1); | |
5869 | b->number = breakpoint_count; | |
5870 | b->type = bp_breakpoint; | |
5871 | b->cond = 0; | |
5872 | b->thread = -1; | |
5873 | return b; | |
5874 | } | |
5875 | ||
5876 | #if 0 | |
5877 | /* These aren't used; I don't know what they were for. */ | |
5878 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
5879 | static void | |
5880 | disable_catch (args) | |
5881 | char *args; | |
5882 | { | |
5883 | /* Map the disable command to catch clauses described in ARGS. */ | |
5884 | } | |
5885 | ||
5886 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
5887 | static void | |
5888 | enable_catch (args) | |
5889 | char *args; | |
5890 | { | |
5891 | /* Map the disable command to catch clauses described in ARGS. */ | |
5892 | } | |
5893 | ||
5894 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
5895 | static void | |
5896 | delete_catch (args) | |
5897 | char *args; | |
5898 | { | |
5899 | /* Map the delete command to catch clauses described in ARGS. */ | |
5900 | } | |
5901 | #endif /* 0 */ | |
5902 | ||
5903 | static void | |
5904 | catch_command (arg, from_tty) | |
5905 | char *arg; | |
5906 | int from_tty; | |
5907 | { | |
5908 | catch_command_1 (arg, 0, from_tty); | |
5909 | } | |
5910 | \f | |
5911 | ||
5912 | static void | |
5913 | tcatch_command (arg, from_tty) | |
5914 | char *arg; | |
5915 | int from_tty; | |
5916 | { | |
5917 | catch_command_1 (arg, 1, from_tty); | |
5918 | } | |
5919 | ||
5920 | ||
5921 | static void | |
5922 | clear_command (arg, from_tty) | |
5923 | char *arg; | |
5924 | int from_tty; | |
5925 | { | |
5926 | register struct breakpoint *b, *b1; | |
5927 | int default_match; | |
5928 | struct symtabs_and_lines sals; | |
5929 | struct symtab_and_line sal; | |
5930 | register struct breakpoint *found; | |
5931 | int i; | |
5932 | ||
5933 | if (arg) | |
5934 | { | |
5935 | sals = decode_line_spec (arg, 1); | |
5936 | default_match = 0; | |
5937 | } | |
5938 | else | |
5939 | { | |
c5aa993b | 5940 | sals.sals = (struct symtab_and_line *) |
c906108c | 5941 | xmalloc (sizeof (struct symtab_and_line)); |
c5aa993b | 5942 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
5943 | sal.line = default_breakpoint_line; |
5944 | sal.symtab = default_breakpoint_symtab; | |
5945 | sal.pc = default_breakpoint_address; | |
5946 | if (sal.symtab == 0) | |
5947 | error ("No source file specified."); | |
5948 | ||
5949 | sals.sals[0] = sal; | |
5950 | sals.nelts = 1; | |
5951 | ||
5952 | default_match = 1; | |
5953 | } | |
5954 | ||
5955 | /* For each line spec given, delete bps which correspond | |
5956 | to it. We do this in two loops: the first loop looks at | |
5957 | the initial bp(s) in the chain which should be deleted, | |
5958 | the second goes down the rest of the chain looking ahead | |
5959 | one so it can take those bps off the chain without messing | |
5960 | up the chain. */ | |
5961 | ||
5962 | ||
5963 | for (i = 0; i < sals.nelts; i++) | |
5964 | { | |
5965 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
5966 | If line given (pc == 0), clear all bpts on specified line. |
5967 | If defaulting, clear all bpts on default line | |
c906108c | 5968 | or at default pc. |
c5aa993b JM |
5969 | |
5970 | defaulting sal.pc != 0 tests to do | |
5971 | ||
5972 | 0 1 pc | |
5973 | 1 1 pc _and_ line | |
5974 | 0 0 line | |
5975 | 1 0 <can't happen> */ | |
c906108c SS |
5976 | |
5977 | sal = sals.sals[i]; | |
5978 | found = (struct breakpoint *) 0; | |
5979 | ||
5980 | ||
5981 | while (breakpoint_chain | |
c5aa993b JM |
5982 | /* Why don't we check here that this is not |
5983 | a watchpoint, etc., as we do below? | |
5984 | I can't make it fail, but don't know | |
5985 | what's stopping the failure: a watchpoint | |
5986 | of the same address as "sal.pc" should | |
5987 | wind up being deleted. */ | |
5988 | ||
5989 | && (((sal.pc && (breakpoint_chain->address == sal.pc)) && | |
5990 | (overlay_debugging == 0 || | |
5991 | breakpoint_chain->section == sal.section)) | |
5992 | || ((default_match || (0 == sal.pc)) | |
5993 | && breakpoint_chain->source_file != NULL | |
5994 | && sal.symtab != NULL | |
5995 | && STREQ (breakpoint_chain->source_file, sal.symtab->filename) | |
5996 | && breakpoint_chain->line_number == sal.line))) | |
c906108c SS |
5997 | |
5998 | { | |
5999 | b1 = breakpoint_chain; | |
6000 | breakpoint_chain = b1->next; | |
6001 | b1->next = found; | |
6002 | found = b1; | |
6003 | } | |
6004 | ||
6005 | ALL_BREAKPOINTS (b) | |
6006 | ||
c5aa993b JM |
6007 | while (b->next |
6008 | && b->next->type != bp_none | |
6009 | && b->next->type != bp_watchpoint | |
6010 | && b->next->type != bp_hardware_watchpoint | |
6011 | && b->next->type != bp_read_watchpoint | |
6012 | && b->next->type != bp_access_watchpoint | |
6013 | && (((sal.pc && (b->next->address == sal.pc)) && | |
6014 | (overlay_debugging == 0 || | |
6015 | b->next->section == sal.section)) | |
6016 | || ((default_match || (0 == sal.pc)) | |
6017 | && b->next->source_file != NULL | |
6018 | && sal.symtab != NULL | |
6019 | && STREQ (b->next->source_file, sal.symtab->filename) | |
6020 | && b->next->line_number == sal.line))) | |
c906108c SS |
6021 | |
6022 | ||
c5aa993b JM |
6023 | { |
6024 | b1 = b->next; | |
6025 | b->next = b1->next; | |
6026 | b1->next = found; | |
6027 | found = b1; | |
6028 | } | |
c906108c SS |
6029 | |
6030 | if (found == 0) | |
6031 | { | |
6032 | if (arg) | |
6033 | error ("No breakpoint at %s.", arg); | |
6034 | else | |
6035 | error ("No breakpoint at this line."); | |
6036 | } | |
6037 | ||
c5aa993b JM |
6038 | if (found->next) |
6039 | from_tty = 1; /* Always report if deleted more than one */ | |
6040 | if (from_tty) | |
6041 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
c906108c SS |
6042 | breakpoints_changed (); |
6043 | while (found) | |
6044 | { | |
c5aa993b JM |
6045 | if (from_tty) |
6046 | printf_unfiltered ("%d ", found->number); | |
c906108c SS |
6047 | b1 = found->next; |
6048 | delete_breakpoint (found); | |
6049 | found = b1; | |
6050 | } | |
c5aa993b JM |
6051 | if (from_tty) |
6052 | putchar_unfiltered ('\n'); | |
c906108c | 6053 | } |
c5aa993b | 6054 | free ((PTR) sals.sals); |
c906108c SS |
6055 | } |
6056 | \f | |
6057 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6058 | all breakpoints that are marked for deletion, whether hit or not. | |
6059 | This is called after any breakpoint is hit, or after errors. */ | |
6060 | ||
6061 | void | |
6062 | breakpoint_auto_delete (bs) | |
6063 | bpstat bs; | |
6064 | { | |
6065 | struct breakpoint *b, *temp; | |
6066 | ||
6067 | for (; bs; bs = bs->next) | |
c5aa993b | 6068 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
c906108c SS |
6069 | && bs->stop) |
6070 | delete_breakpoint (bs->breakpoint_at); | |
6071 | ||
6072 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
6073 | { |
6074 | if (b->disposition == del_at_next_stop) | |
6075 | delete_breakpoint (b); | |
6076 | } | |
c906108c SS |
6077 | } |
6078 | ||
53a5351d JM |
6079 | /* Delete a breakpoint and clean up all traces of it in the data |
6080 | structures. */ | |
c906108c SS |
6081 | |
6082 | void | |
6083 | delete_breakpoint (bpt) | |
6084 | struct breakpoint *bpt; | |
6085 | { | |
6086 | register struct breakpoint *b; | |
6087 | register bpstat bs; | |
6088 | ||
6089 | if (bpt == NULL) | |
6090 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6091 | ||
6092 | ||
6093 | /* Has this bp already been deleted? This can happen because multiple | |
6094 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6095 | ||
6096 | One example of this happening is a watchpoint's scope bp. When the | |
6097 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6098 | delete it. We also delete its scope bp. But the scope bp is marked | |
6099 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6100 | checked for auto-deleting bp's, which are deleted. | |
6101 | ||
6102 | A real solution to this problem might involve reference counts in bp's, | |
6103 | and/or giving them pointers back to their referencing bpstat's, and | |
6104 | teaching delete_breakpoint to only free a bp's storage when no more | |
6105 | references were extent. A cheaper bandaid was chosen. */ | |
6106 | if (bpt->type == bp_none) | |
6107 | return; | |
6108 | ||
6109 | if (delete_breakpoint_hook) | |
6110 | delete_breakpoint_hook (bpt); | |
104c1213 | 6111 | breakpoint_delete_event (bpt->number); |
c906108c SS |
6112 | |
6113 | if (bpt->inserted) | |
6114 | remove_breakpoint (bpt, mark_uninserted); | |
c5aa993b | 6115 | |
c906108c SS |
6116 | if (breakpoint_chain == bpt) |
6117 | breakpoint_chain = bpt->next; | |
6118 | ||
6119 | /* If we have callback-style exception catchpoints, don't go through | |
6120 | the adjustments to the C++ runtime library etc. if the inferior | |
6121 | isn't actually running. target_enable_exception_callback for a | |
6122 | null target ops vector gives an undesirable error message, so we | |
6123 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6124 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6125 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6126 | { | |
6127 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
6128 | static char message[sizeof (message1) + 30]; | |
6129 | args_for_catchpoint_enable args; | |
6130 | ||
53a5351d JM |
6131 | /* Format possible error msg */ |
6132 | sprintf (message, message1, bpt->number); | |
6133 | args.kind = bpt->type == bp_catch_catch ? | |
6134 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
6135 | args.enable = 0; |
6136 | catch_errors (cover_target_enable_exception_callback, &args, | |
6137 | message, RETURN_MASK_ALL); | |
6138 | } | |
6139 | ||
6140 | ||
6141 | ALL_BREAKPOINTS (b) | |
6142 | if (b->next == bpt) | |
c5aa993b JM |
6143 | { |
6144 | b->next = bpt->next; | |
6145 | break; | |
6146 | } | |
c906108c SS |
6147 | |
6148 | /* Before turning off the visuals for the bp, check to see that | |
6149 | there are no other bps at the same address. */ | |
6150 | if (tui_version) | |
6151 | { | |
6152 | int clearIt; | |
6153 | ||
6154 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
6155 | { |
6156 | clearIt = (b->address != bpt->address); | |
6157 | if (!clearIt) | |
6158 | break; | |
6159 | } | |
c906108c SS |
6160 | |
6161 | if (clearIt) | |
c5aa993b JM |
6162 | { |
6163 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, bpt, 0)); | |
6164 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
6165 | } | |
c906108c SS |
6166 | } |
6167 | ||
6168 | check_duplicates (bpt->address, bpt->section); | |
6169 | /* If this breakpoint was inserted, and there is another breakpoint | |
6170 | at the same address, we need to insert the other breakpoint. */ | |
6171 | if (bpt->inserted | |
6172 | && bpt->type != bp_hardware_watchpoint | |
6173 | && bpt->type != bp_read_watchpoint | |
6174 | && bpt->type != bp_access_watchpoint | |
6175 | && bpt->type != bp_catch_fork | |
6176 | && bpt->type != bp_catch_vfork | |
6177 | && bpt->type != bp_catch_exec) | |
6178 | { | |
6179 | ALL_BREAKPOINTS (b) | |
6180 | if (b->address == bpt->address | |
6181 | && b->section == bpt->section | |
6182 | && !b->duplicate | |
6183 | && b->enable != disabled | |
6184 | && b->enable != shlib_disabled | |
6185 | && b->enable != call_disabled) | |
c5aa993b JM |
6186 | { |
6187 | int val; | |
53a5351d | 6188 | |
c2c6d25f JM |
6189 | /* We should never reach this point if there is a permanent |
6190 | breakpoint at the same address as the one being deleted. | |
6191 | If there is a permanent breakpoint somewhere, it should | |
6192 | always be the only one inserted. */ | |
6193 | if (b->enable == permanent) | |
6194 | internal_error ("another breakpoint was inserted on top of " | |
6195 | "a permanent breakpoint"); | |
6196 | ||
53a5351d JM |
6197 | if (b->type == bp_hardware_breakpoint) |
6198 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
6199 | else | |
6200 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
6201 | ||
c5aa993b JM |
6202 | if (val != 0) |
6203 | { | |
6204 | target_terminal_ours_for_output (); | |
53a5351d | 6205 | warning ("Cannot insert breakpoint %d:", b->number); |
c5aa993b JM |
6206 | memory_error (val, b->address); /* which bombs us out */ |
6207 | } | |
6208 | else | |
6209 | b->inserted = 1; | |
6210 | } | |
c906108c SS |
6211 | } |
6212 | ||
6213 | free_command_lines (&bpt->commands); | |
6214 | if (bpt->cond) | |
6215 | free (bpt->cond); | |
6216 | if (bpt->cond_string != NULL) | |
6217 | free (bpt->cond_string); | |
6218 | if (bpt->addr_string != NULL) | |
6219 | free (bpt->addr_string); | |
6220 | if (bpt->exp != NULL) | |
6221 | free (bpt->exp); | |
6222 | if (bpt->exp_string != NULL) | |
6223 | free (bpt->exp_string); | |
6224 | if (bpt->val != NULL) | |
6225 | value_free (bpt->val); | |
6226 | if (bpt->source_file != NULL) | |
6227 | free (bpt->source_file); | |
6228 | if (bpt->dll_pathname != NULL) | |
6229 | free (bpt->dll_pathname); | |
6230 | if (bpt->triggered_dll_pathname != NULL) | |
6231 | free (bpt->triggered_dll_pathname); | |
6232 | if (bpt->exec_pathname != NULL) | |
6233 | free (bpt->exec_pathname); | |
6234 | ||
6235 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6236 | /* FIXME, how can we find all bpstat's? | |
6237 | We just check stop_bpstat for now. */ | |
6238 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6239 | if (bs->breakpoint_at == bpt) | |
6240 | { | |
6241 | bs->breakpoint_at = NULL; | |
6242 | ||
6243 | /* we'd call bpstat_clear_actions, but that free's stuff and due | |
6244 | to the multiple pointers pointing to one item with no | |
6245 | reference counts found anywhere through out the bpstat's (how | |
6246 | do you spell fragile?), we don't want to free things twice -- | |
6247 | better a memory leak than a corrupt malloc pool! */ | |
6248 | bs->commands = NULL; | |
6249 | bs->old_val = NULL; | |
6250 | } | |
6251 | /* On the chance that someone will soon try again to delete this same | |
6252 | bp, we mark it as deleted before freeing its storage. */ | |
6253 | bpt->type = bp_none; | |
6254 | ||
c5aa993b | 6255 | free ((PTR) bpt); |
c906108c SS |
6256 | } |
6257 | ||
6258 | void | |
6259 | delete_command (arg, from_tty) | |
6260 | char *arg; | |
6261 | int from_tty; | |
6262 | { | |
6263 | struct breakpoint *b, *temp; | |
6264 | ||
6265 | if (arg == 0) | |
6266 | { | |
6267 | int breaks_to_delete = 0; | |
6268 | ||
6269 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6270 | Do not delete internal or call-dummy breakpoints, these |
6271 | have to be deleted with an explicit breakpoint number argument. */ | |
6272 | ALL_BREAKPOINTS (b) | |
6273 | { | |
6274 | if (b->type != bp_call_dummy && | |
6275 | b->type != bp_shlib_event && | |
6276 | b->number >= 0) | |
6277 | breaks_to_delete = 1; | |
6278 | } | |
c906108c SS |
6279 | |
6280 | /* Ask user only if there are some breakpoints to delete. */ | |
6281 | if (!from_tty | |
6282 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6283 | { | |
c5aa993b JM |
6284 | ALL_BREAKPOINTS_SAFE (b, temp) |
6285 | { | |
6286 | if (b->type != bp_call_dummy && | |
6287 | b->type != bp_shlib_event && | |
6288 | b->number >= 0) | |
6289 | delete_breakpoint (b); | |
6290 | } | |
c906108c SS |
6291 | } |
6292 | } | |
6293 | else | |
6294 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6295 | } | |
6296 | ||
6297 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6298 | The value we return ends up being the return value from catch_errors. | |
6299 | Unused in this case. */ | |
6300 | ||
6301 | static int | |
6302 | breakpoint_re_set_one (bint) | |
6303 | PTR bint; | |
6304 | { | |
53a5351d JM |
6305 | /* get past catch_errs */ |
6306 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6307 | struct value *mark; |
6308 | int i; | |
6309 | struct symtabs_and_lines sals; | |
6310 | char *s; | |
6311 | enum enable save_enable; | |
6312 | ||
6313 | switch (b->type) | |
6314 | { | |
6315 | case bp_none: | |
53a5351d JM |
6316 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6317 | b->number); | |
c906108c SS |
6318 | return 0; |
6319 | case bp_breakpoint: | |
6320 | case bp_hardware_breakpoint: | |
6321 | case bp_catch_load: | |
6322 | case bp_catch_unload: | |
6323 | if (b->addr_string == NULL) | |
6324 | { | |
6325 | /* Anything without a string can't be re-set. */ | |
6326 | delete_breakpoint (b); | |
6327 | return 0; | |
6328 | } | |
6329 | /* In case we have a problem, disable this breakpoint. We'll restore | |
c5aa993b | 6330 | its status if we succeed. */ |
c906108c SS |
6331 | save_enable = b->enable; |
6332 | b->enable = disabled; | |
6333 | ||
6334 | set_language (b->language); | |
6335 | input_radix = b->input_radix; | |
6336 | s = b->addr_string; | |
c5aa993b | 6337 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6338 | for (i = 0; i < sals.nelts; i++) |
6339 | { | |
6340 | resolve_sal_pc (&sals.sals[i]); | |
6341 | ||
6342 | /* Reparse conditions, they might contain references to the | |
6343 | old symtab. */ | |
6344 | if (b->cond_string != NULL) | |
6345 | { | |
6346 | s = b->cond_string; | |
6347 | if (b->cond) | |
c5aa993b | 6348 | free ((PTR) b->cond); |
c906108c SS |
6349 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
6350 | } | |
6351 | ||
c5aa993b | 6352 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 6353 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
6354 | /* ...or new and old breakpoints both have source files, and |
6355 | the source file name or the line number changes... */ | |
c906108c SS |
6356 | || (b->source_file != NULL |
6357 | && sals.sals[i].symtab != NULL | |
6358 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
6359 | || b->line_number != sals.sals[i].line) | |
c906108c | 6360 | ) |
c5aa993b JM |
6361 | /* ...or we switch between having a source file and not having |
6362 | one. */ | |
6363 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
6364 | ) | |
c906108c SS |
6365 | { |
6366 | if (b->source_file != NULL) | |
6367 | free (b->source_file); | |
6368 | if (sals.sals[i].symtab == NULL) | |
6369 | b->source_file = NULL; | |
6370 | else | |
6371 | b->source_file = | |
6372 | savestring (sals.sals[i].symtab->filename, | |
6373 | strlen (sals.sals[i].symtab->filename)); | |
6374 | b->line_number = sals.sals[i].line; | |
6375 | b->address = sals.sals[i].pc; | |
6376 | ||
c5aa993b JM |
6377 | /* Used to check for duplicates here, but that can |
6378 | cause trouble, as it doesn't check for disable | |
6379 | breakpoints. */ | |
c906108c SS |
6380 | |
6381 | mention (b); | |
6382 | ||
6383 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 6384 | rather than once for every breakpoint. */ |
c906108c SS |
6385 | breakpoints_changed (); |
6386 | } | |
6387 | b->section = sals.sals[i].section; | |
6388 | b->enable = save_enable; /* Restore it, this worked. */ | |
6389 | ||
6390 | ||
c5aa993b | 6391 | /* Now that this is re-enabled, check_duplicates |
c906108c | 6392 | can be used. */ |
c5aa993b | 6393 | check_duplicates (b->address, b->section); |
c906108c SS |
6394 | |
6395 | } | |
c5aa993b | 6396 | free ((PTR) sals.sals); |
c906108c SS |
6397 | break; |
6398 | ||
6399 | case bp_watchpoint: | |
6400 | case bp_hardware_watchpoint: | |
6401 | case bp_read_watchpoint: | |
6402 | case bp_access_watchpoint: | |
6403 | innermost_block = NULL; | |
53a5351d JM |
6404 | /* The issue arises of what context to evaluate this in. The |
6405 | same one as when it was set, but what does that mean when | |
6406 | symbols have been re-read? We could save the filename and | |
6407 | functionname, but if the context is more local than that, the | |
6408 | best we could do would be something like how many levels deep | |
6409 | and which index at that particular level, but that's going to | |
6410 | be less stable than filenames or function names. */ | |
6411 | ||
c906108c SS |
6412 | /* So for now, just use a global context. */ |
6413 | if (b->exp) | |
c5aa993b | 6414 | free ((PTR) b->exp); |
c906108c SS |
6415 | b->exp = parse_expression (b->exp_string); |
6416 | b->exp_valid_block = innermost_block; | |
6417 | mark = value_mark (); | |
6418 | if (b->val) | |
6419 | value_free (b->val); | |
6420 | b->val = evaluate_expression (b->exp); | |
6421 | release_value (b->val); | |
6422 | if (VALUE_LAZY (b->val)) | |
6423 | value_fetch_lazy (b->val); | |
6424 | ||
6425 | if (b->cond_string != NULL) | |
6426 | { | |
6427 | s = b->cond_string; | |
6428 | if (b->cond) | |
c5aa993b JM |
6429 | free ((PTR) b->cond); |
6430 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); | |
c906108c SS |
6431 | } |
6432 | if (b->enable == enabled) | |
6433 | mention (b); | |
6434 | value_free_to_mark (mark); | |
6435 | break; | |
c5aa993b JM |
6436 | case bp_catch_catch: |
6437 | case bp_catch_throw: | |
c906108c | 6438 | break; |
c5aa993b JM |
6439 | /* We needn't really do anything to reset these, since the mask |
6440 | that requests them is unaffected by e.g., new libraries being | |
6441 | loaded. */ | |
c906108c SS |
6442 | case bp_catch_fork: |
6443 | case bp_catch_vfork: | |
6444 | case bp_catch_exec: | |
6445 | break; | |
c5aa993b | 6446 | |
c906108c SS |
6447 | default: |
6448 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
6449 | /* fall through */ | |
c5aa993b JM |
6450 | /* Delete longjmp breakpoints, they will be reset later by |
6451 | breakpoint_re_set. */ | |
c906108c SS |
6452 | case bp_longjmp: |
6453 | case bp_longjmp_resume: | |
6454 | delete_breakpoint (b); | |
6455 | break; | |
6456 | ||
c5aa993b JM |
6457 | /* This breakpoint is special, it's set up when the inferior |
6458 | starts and we really don't want to touch it. */ | |
c906108c SS |
6459 | case bp_shlib_event: |
6460 | ||
c5aa993b JM |
6461 | /* Keep temporary breakpoints, which can be encountered when we step |
6462 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
6463 | Otherwise these should have been blown away via the cleanup chain | |
6464 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
6465 | case bp_until: |
6466 | case bp_finish: | |
6467 | case bp_watchpoint_scope: | |
6468 | case bp_call_dummy: | |
6469 | case bp_step_resume: | |
6470 | break; | |
6471 | } | |
6472 | ||
6473 | return 0; | |
6474 | } | |
6475 | ||
6476 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
6477 | void | |
6478 | breakpoint_re_set () | |
6479 | { | |
6480 | struct breakpoint *b, *temp; | |
6481 | enum language save_language; | |
6482 | int save_input_radix; | |
6483 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
6484 | char message[sizeof (message1) + 30 /* slop */ ]; |
6485 | ||
c906108c SS |
6486 | save_language = current_language->la_language; |
6487 | save_input_radix = input_radix; | |
6488 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6489 | { |
53a5351d JM |
6490 | /* Format possible error msg */ |
6491 | sprintf (message, message1, b->number); | |
c5aa993b JM |
6492 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
6493 | } | |
c906108c SS |
6494 | set_language (save_language); |
6495 | input_radix = save_input_radix; | |
6496 | ||
6497 | #ifdef GET_LONGJMP_TARGET | |
6498 | create_longjmp_breakpoint ("longjmp"); | |
6499 | create_longjmp_breakpoint ("_longjmp"); | |
6500 | create_longjmp_breakpoint ("siglongjmp"); | |
6501 | create_longjmp_breakpoint ("_siglongjmp"); | |
6502 | create_longjmp_breakpoint (NULL); | |
6503 | #endif | |
6504 | ||
6505 | #if 0 | |
6506 | /* Took this out (temporarily at least), since it produces an extra | |
6507 | blank line at startup. This messes up the gdbtests. -PB */ | |
6508 | /* Blank line to finish off all those mention() messages we just printed. */ | |
6509 | printf_filtered ("\n"); | |
6510 | #endif | |
6511 | } | |
6512 | \f | |
6513 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
6514 | If from_tty is nonzero, it prints a message to that effect, | |
6515 | which ends with a period (no newline). */ | |
6516 | ||
6517 | /* Reset the thread number of this breakpoint: | |
6518 | ||
6519 | - If the breakpoint is for all threads, leave it as-is. | |
6520 | - Else, reset it to the current thread for inferior_pid. */ | |
6521 | void | |
6522 | breakpoint_re_set_thread (b) | |
c5aa993b | 6523 | struct breakpoint *b; |
c906108c SS |
6524 | { |
6525 | if (b->thread != -1) | |
6526 | { | |
6527 | if (in_thread_list (inferior_pid)) | |
c5aa993b | 6528 | b->thread = pid_to_thread_id (inferior_pid); |
c906108c SS |
6529 | } |
6530 | } | |
6531 | ||
6532 | void | |
6533 | set_ignore_count (bptnum, count, from_tty) | |
6534 | int bptnum, count, from_tty; | |
6535 | { | |
6536 | register struct breakpoint *b; | |
6537 | ||
6538 | if (count < 0) | |
6539 | count = 0; | |
6540 | ||
6541 | ALL_BREAKPOINTS (b) | |
6542 | if (b->number == bptnum) | |
c5aa993b JM |
6543 | { |
6544 | b->ignore_count = count; | |
6545 | if (!from_tty) | |
c906108c | 6546 | return; |
c5aa993b JM |
6547 | else if (count == 0) |
6548 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
6549 | bptnum); | |
6550 | else if (count == 1) | |
6551 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
6552 | bptnum); | |
6553 | else | |
6554 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
6555 | count, bptnum); | |
6556 | breakpoints_changed (); | |
6557 | return; | |
6558 | } | |
c906108c SS |
6559 | |
6560 | error ("No breakpoint number %d.", bptnum); | |
6561 | } | |
6562 | ||
6563 | /* Clear the ignore counts of all breakpoints. */ | |
6564 | void | |
6565 | breakpoint_clear_ignore_counts () | |
6566 | { | |
6567 | struct breakpoint *b; | |
6568 | ||
6569 | ALL_BREAKPOINTS (b) | |
6570 | b->ignore_count = 0; | |
6571 | } | |
6572 | ||
6573 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
6574 | ||
6575 | static void | |
6576 | ignore_command (args, from_tty) | |
6577 | char *args; | |
6578 | int from_tty; | |
6579 | { | |
6580 | char *p = args; | |
6581 | register int num; | |
6582 | ||
6583 | if (p == 0) | |
6584 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 6585 | |
c906108c | 6586 | num = get_number (&p); |
5c44784c JM |
6587 | if (num == 0) |
6588 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
6589 | if (*p == 0) |
6590 | error ("Second argument (specified ignore-count) is missing."); | |
6591 | ||
6592 | set_ignore_count (num, | |
6593 | longest_to_int (value_as_long (parse_and_eval (p))), | |
6594 | from_tty); | |
6595 | printf_filtered ("\n"); | |
6596 | breakpoints_changed (); | |
6597 | } | |
6598 | \f | |
6599 | /* Call FUNCTION on each of the breakpoints | |
6600 | whose numbers are given in ARGS. */ | |
6601 | ||
6602 | static void | |
6603 | map_breakpoint_numbers (args, function) | |
6604 | char *args; | |
6605 | void (*function) PARAMS ((struct breakpoint *)); | |
6606 | { | |
6607 | register char *p = args; | |
6608 | char *p1; | |
6609 | register int num; | |
5c44784c | 6610 | register struct breakpoint *b, *tmp; |
11cf8741 | 6611 | int match; |
c906108c SS |
6612 | |
6613 | if (p == 0) | |
6614 | error_no_arg ("one or more breakpoint numbers"); | |
6615 | ||
6616 | while (*p) | |
6617 | { | |
11cf8741 | 6618 | match = 0; |
c906108c | 6619 | p1 = p; |
c5aa993b | 6620 | |
5c44784c JM |
6621 | num = get_number_or_range (&p1); |
6622 | if (num == 0) | |
c5aa993b | 6623 | { |
5c44784c JM |
6624 | warning ("bad breakpoint number at or near '%s'", p); |
6625 | } | |
6626 | else | |
6627 | { | |
6628 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
6629 | if (b->number == num) | |
6630 | { | |
6631 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 6632 | match = 1; |
5c44784c JM |
6633 | function (b); |
6634 | if (related_breakpoint) | |
6635 | function (related_breakpoint); | |
11cf8741 | 6636 | break; |
5c44784c | 6637 | } |
11cf8741 JM |
6638 | if (match == 0) |
6639 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 6640 | } |
c906108c SS |
6641 | p = p1; |
6642 | } | |
6643 | } | |
6644 | ||
6645 | void | |
6646 | disable_breakpoint (bpt) | |
6647 | struct breakpoint *bpt; | |
6648 | { | |
6649 | /* Never disable a watchpoint scope breakpoint; we want to | |
6650 | hit them when we leave scope so we can delete both the | |
6651 | watchpoint and its scope breakpoint at that time. */ | |
6652 | if (bpt->type == bp_watchpoint_scope) | |
6653 | return; | |
6654 | ||
c2c6d25f JM |
6655 | /* You can't disable permanent breakpoints. */ |
6656 | if (bpt->enable == permanent) | |
6657 | return; | |
6658 | ||
c906108c SS |
6659 | bpt->enable = disabled; |
6660 | ||
6661 | check_duplicates (bpt->address, bpt->section); | |
6662 | ||
6663 | if (modify_breakpoint_hook) | |
6664 | modify_breakpoint_hook (bpt); | |
104c1213 | 6665 | breakpoint_modify_event (bpt->number); |
c906108c SS |
6666 | } |
6667 | ||
6668 | /* ARGSUSED */ | |
6669 | static void | |
6670 | disable_command (args, from_tty) | |
6671 | char *args; | |
6672 | int from_tty; | |
6673 | { | |
6674 | register struct breakpoint *bpt; | |
6675 | if (args == 0) | |
6676 | ALL_BREAKPOINTS (bpt) | |
6677 | switch (bpt->type) | |
c5aa993b JM |
6678 | { |
6679 | case bp_none: | |
53a5351d JM |
6680 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
6681 | bpt->number); | |
c5aa993b JM |
6682 | continue; |
6683 | case bp_breakpoint: | |
6684 | case bp_catch_load: | |
6685 | case bp_catch_unload: | |
6686 | case bp_catch_fork: | |
6687 | case bp_catch_vfork: | |
6688 | case bp_catch_exec: | |
6689 | case bp_catch_catch: | |
6690 | case bp_catch_throw: | |
6691 | case bp_hardware_breakpoint: | |
6692 | case bp_watchpoint: | |
6693 | case bp_hardware_watchpoint: | |
6694 | case bp_read_watchpoint: | |
6695 | case bp_access_watchpoint: | |
6696 | disable_breakpoint (bpt); | |
6697 | default: | |
6698 | continue; | |
6699 | } | |
c906108c SS |
6700 | else |
6701 | map_breakpoint_numbers (args, disable_breakpoint); | |
6702 | } | |
6703 | ||
6704 | static void | |
6705 | do_enable_breakpoint (bpt, disposition) | |
6706 | struct breakpoint *bpt; | |
6707 | enum bpdisp disposition; | |
6708 | { | |
6709 | struct frame_info *save_selected_frame = NULL; | |
6710 | int save_selected_frame_level = -1; | |
6711 | int target_resources_ok, other_type_used; | |
6712 | struct value *mark; | |
6713 | ||
6714 | if (bpt->type == bp_hardware_breakpoint) | |
6715 | { | |
6716 | int i; | |
c5aa993b | 6717 | i = hw_breakpoint_used_count (); |
53a5351d JM |
6718 | target_resources_ok = |
6719 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
6720 | i + 1, 0); | |
c906108c | 6721 | if (target_resources_ok == 0) |
c5aa993b | 6722 | error ("No hardware breakpoint support in the target."); |
c906108c | 6723 | else if (target_resources_ok < 0) |
c5aa993b | 6724 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
6725 | } |
6726 | ||
c2c6d25f JM |
6727 | if (bpt->enable != permanent) |
6728 | bpt->enable = enabled; | |
c906108c SS |
6729 | bpt->disposition = disposition; |
6730 | check_duplicates (bpt->address, bpt->section); | |
6731 | breakpoints_changed (); | |
6732 | ||
53a5351d JM |
6733 | if (bpt->type == bp_watchpoint || |
6734 | bpt->type == bp_hardware_watchpoint || | |
6735 | bpt->type == bp_read_watchpoint || | |
6736 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
6737 | { |
6738 | if (bpt->exp_valid_block != NULL) | |
6739 | { | |
6740 | struct frame_info *fr = | |
6741 | ||
c5aa993b JM |
6742 | /* Ensure that we have the current frame. Else, this |
6743 | next query may pessimistically be answered as, "No, | |
6744 | not within current scope". */ | |
6745 | get_current_frame (); | |
6746 | fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
c906108c SS |
6747 | if (fr == NULL) |
6748 | { | |
6749 | printf_filtered ("\ | |
6750 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
6751 | is valid is not currently in scope.\n", bpt->number); | |
6752 | bpt->enable = disabled; | |
6753 | return; | |
6754 | } | |
6755 | ||
6756 | save_selected_frame = selected_frame; | |
6757 | save_selected_frame_level = selected_frame_level; | |
6758 | select_frame (fr, -1); | |
6759 | } | |
6760 | ||
6761 | value_free (bpt->val); | |
6762 | mark = value_mark (); | |
6763 | bpt->val = evaluate_expression (bpt->exp); | |
6764 | release_value (bpt->val); | |
6765 | if (VALUE_LAZY (bpt->val)) | |
6766 | value_fetch_lazy (bpt->val); | |
6767 | ||
6768 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
6769 | bpt->type == bp_read_watchpoint || |
6770 | bpt->type == bp_access_watchpoint) | |
6771 | { | |
6772 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
6773 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
6774 | ||
6775 | /* Hack around 'unused var' error for some targets here */ | |
6776 | (void) mem_cnt, i; | |
6777 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
6778 | bpt->type, i + mem_cnt, other_type_used); | |
6779 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
6780 | bp_watchpoint in the following condition */ | |
6781 | if (target_resources_ok < 0) | |
6782 | { | |
6783 | printf_filtered ("\ | |
c906108c SS |
6784 | Cannot enable watchpoint %d because target watch resources\n\ |
6785 | have been allocated for other watchpoints.\n", bpt->number); | |
c5aa993b JM |
6786 | bpt->enable = disabled; |
6787 | value_free_to_mark (mark); | |
6788 | return; | |
6789 | } | |
6790 | } | |
c906108c SS |
6791 | |
6792 | if (save_selected_frame_level >= 0) | |
53a5351d JM |
6793 | select_and_print_frame (save_selected_frame, |
6794 | save_selected_frame_level); | |
c906108c SS |
6795 | value_free_to_mark (mark); |
6796 | } | |
6797 | if (modify_breakpoint_hook) | |
6798 | modify_breakpoint_hook (bpt); | |
104c1213 | 6799 | breakpoint_modify_event (bpt->number); |
c906108c SS |
6800 | } |
6801 | ||
6802 | void | |
6803 | enable_breakpoint (bpt) | |
6804 | struct breakpoint *bpt; | |
6805 | { | |
6806 | do_enable_breakpoint (bpt, bpt->disposition); | |
6807 | } | |
6808 | ||
6809 | /* The enable command enables the specified breakpoints (or all defined | |
6810 | breakpoints) so they once again become (or continue to be) effective | |
6811 | in stopping the inferior. */ | |
6812 | ||
6813 | /* ARGSUSED */ | |
6814 | static void | |
6815 | enable_command (args, from_tty) | |
6816 | char *args; | |
6817 | int from_tty; | |
6818 | { | |
6819 | register struct breakpoint *bpt; | |
6820 | if (args == 0) | |
6821 | ALL_BREAKPOINTS (bpt) | |
6822 | switch (bpt->type) | |
c5aa993b JM |
6823 | { |
6824 | case bp_none: | |
53a5351d JM |
6825 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
6826 | bpt->number); | |
c5aa993b JM |
6827 | continue; |
6828 | case bp_breakpoint: | |
6829 | case bp_catch_load: | |
6830 | case bp_catch_unload: | |
6831 | case bp_catch_fork: | |
6832 | case bp_catch_vfork: | |
6833 | case bp_catch_exec: | |
6834 | case bp_catch_catch: | |
6835 | case bp_catch_throw: | |
6836 | case bp_hardware_breakpoint: | |
6837 | case bp_watchpoint: | |
6838 | case bp_hardware_watchpoint: | |
6839 | case bp_read_watchpoint: | |
6840 | case bp_access_watchpoint: | |
6841 | enable_breakpoint (bpt); | |
6842 | default: | |
6843 | continue; | |
6844 | } | |
c906108c SS |
6845 | else |
6846 | map_breakpoint_numbers (args, enable_breakpoint); | |
6847 | } | |
6848 | ||
6849 | static void | |
6850 | enable_once_breakpoint (bpt) | |
6851 | struct breakpoint *bpt; | |
6852 | { | |
6853 | do_enable_breakpoint (bpt, disable); | |
6854 | } | |
6855 | ||
6856 | /* ARGSUSED */ | |
6857 | static void | |
6858 | enable_once_command (args, from_tty) | |
6859 | char *args; | |
6860 | int from_tty; | |
6861 | { | |
6862 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
6863 | } | |
6864 | ||
6865 | static void | |
6866 | enable_delete_breakpoint (bpt) | |
6867 | struct breakpoint *bpt; | |
6868 | { | |
6869 | do_enable_breakpoint (bpt, del); | |
6870 | } | |
6871 | ||
6872 | /* ARGSUSED */ | |
6873 | static void | |
6874 | enable_delete_command (args, from_tty) | |
6875 | char *args; | |
6876 | int from_tty; | |
6877 | { | |
6878 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
6879 | } | |
6880 | \f | |
6881 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
6882 | ||
6883 | struct symtabs_and_lines | |
6884 | decode_line_spec_1 (string, funfirstline) | |
6885 | char *string; | |
6886 | int funfirstline; | |
6887 | { | |
6888 | struct symtabs_and_lines sals; | |
6889 | if (string == 0) | |
6890 | error ("Empty line specification."); | |
6891 | if (default_breakpoint_valid) | |
6892 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
6893 | default_breakpoint_symtab, |
6894 | default_breakpoint_line, | |
c5aa993b | 6895 | (char ***) NULL); |
c906108c SS |
6896 | else |
6897 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 6898 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6899 | if (*string) |
6900 | error ("Junk at end of line specification: %s", string); | |
6901 | return sals; | |
6902 | } | |
6903 | \f | |
6904 | void | |
6905 | _initialize_breakpoint () | |
6906 | { | |
6907 | struct cmd_list_element *c; | |
6908 | ||
6909 | breakpoint_chain = 0; | |
6910 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
6911 | before a breakpoint is set. */ | |
6912 | breakpoint_count = 0; | |
6913 | ||
6914 | add_com ("ignore", class_breakpoint, ignore_command, | |
6915 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
6916 | Usage is `ignore N COUNT'."); | |
6917 | if (xdb_commands) | |
c5aa993b | 6918 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
6919 | |
6920 | add_com ("commands", class_breakpoint, commands_command, | |
6921 | "Set commands to be executed when a breakpoint is hit.\n\ | |
6922 | Give breakpoint number as argument after \"commands\".\n\ | |
6923 | With no argument, the targeted breakpoint is the last one set.\n\ | |
6924 | The commands themselves follow starting on the next line.\n\ | |
6925 | Type a line containing \"end\" to indicate the end of them.\n\ | |
6926 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
6927 | then no output is printed when it is hit, except what the commands print."); | |
6928 | ||
6929 | add_com ("condition", class_breakpoint, condition_command, | |
6930 | "Specify breakpoint number N to break only if COND is true.\n\ | |
6931 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
6932 | expression to be evaluated whenever breakpoint N is reached. "); | |
6933 | ||
6934 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
6935 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
6936 | Like \"break\" except the breakpoint is only temporary,\n\ | |
6937 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
6938 | by using \"enable delete\" on the breakpoint number."); | |
c5aa993b JM |
6939 | add_com ("txbreak", class_breakpoint, tbreak_at_finish_command, |
6940 | "Set temporary breakpoint at procedure exit. Either there should\n\ | |
c906108c SS |
6941 | be no argument or the argument must be a depth.\n"); |
6942 | ||
6943 | add_com ("hbreak", class_breakpoint, hbreak_command, | |
6944 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
6945 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
6946 | some target hardware may not have this support."); | |
6947 | ||
6948 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
6949 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
6950 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
6951 | so it will be deleted when hit."); | |
6952 | ||
6953 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
6954 | "Enable some breakpoints.\n\ | |
6955 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
6956 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
6957 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6958 | With a subcommand you can enable temporarily.", | |
6959 | &enablelist, "enable ", 1, &cmdlist); | |
6960 | if (xdb_commands) | |
c5aa993b JM |
6961 | add_com ("ab", class_breakpoint, enable_command, |
6962 | "Enable some breakpoints.\n\ | |
c906108c SS |
6963 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
6964 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
6965 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6966 | With a subcommand you can enable temporarily."); | |
6967 | ||
6968 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
6969 | ||
6970 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 6971 | "Enable some breakpoints.\n\ |
c906108c SS |
6972 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
6973 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6974 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 6975 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
6976 | |
6977 | add_cmd ("once", no_class, enable_once_command, | |
6978 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
6979 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
6980 | &enablebreaklist); | |
6981 | ||
6982 | add_cmd ("delete", no_class, enable_delete_command, | |
6983 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
6984 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
6985 | &enablebreaklist); | |
6986 | ||
6987 | add_cmd ("delete", no_class, enable_delete_command, | |
6988 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
6989 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
6990 | &enablelist); | |
6991 | ||
6992 | add_cmd ("once", no_class, enable_once_command, | |
6993 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
6994 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
6995 | &enablelist); | |
6996 | ||
6997 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 6998 | "Disable some breakpoints.\n\ |
c906108c SS |
6999 | Arguments are breakpoint numbers with spaces in between.\n\ |
7000 | To disable all breakpoints, give no argument.\n\ | |
7001 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7002 | &disablelist, "disable ", 1, &cmdlist); | |
7003 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7004 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7005 | if (xdb_commands) | |
c5aa993b JM |
7006 | add_com ("sb", class_breakpoint, disable_command, |
7007 | "Disable some breakpoints.\n\ | |
c906108c SS |
7008 | Arguments are breakpoint numbers with spaces in between.\n\ |
7009 | To disable all breakpoints, give no argument.\n\ | |
7010 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7011 | ||
7012 | add_cmd ("breakpoints", class_alias, disable_command, | |
7013 | "Disable some breakpoints.\n\ | |
7014 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7015 | To disable all breakpoints, give no argument.\n\ | |
7016 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7017 | This command may be abbreviated \"disable\".", | |
7018 | &disablelist); | |
7019 | ||
7020 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7021 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7022 | Arguments are breakpoint numbers with spaces in between.\n\ |
7023 | To delete all breakpoints, give no argument.\n\ | |
7024 | \n\ | |
7025 | Also a prefix command for deletion of other GDB objects.\n\ | |
7026 | The \"unset\" command is also an alias for \"delete\".", | |
7027 | &deletelist, "delete ", 1, &cmdlist); | |
7028 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7029 | if (xdb_commands) | |
7030 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7031 | "Delete some breakpoints.\n\ |
c906108c SS |
7032 | Arguments are breakpoint numbers with spaces in between.\n\ |
7033 | To delete all breakpoints, give no argument.\n"); | |
7034 | ||
7035 | add_cmd ("breakpoints", class_alias, delete_command, | |
7036 | "Delete some breakpoints or auto-display expressions.\n\ | |
7037 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7038 | To delete all breakpoints, give no argument.\n\ | |
7039 | This command may be abbreviated \"delete\".", | |
7040 | &deletelist); | |
7041 | ||
7042 | add_com ("clear", class_breakpoint, clear_command, | |
7043 | concat ("Clear breakpoint at specified line or function.\n\ | |
7044 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7045 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7046 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7047 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7048 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7049 | is executing in.\n\ |
7050 | \n\ | |
7051 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7052 | ||
7053 | add_com ("break", class_breakpoint, break_command, | |
7054 | concat ("Set breakpoint at specified line or function.\n\ | |
7055 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7056 | If line number is specified, break at start of code for that line.\n\ | |
7057 | If function is specified, break at start of code for that function.\n\ | |
7058 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7059 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7060 | This is useful for breaking on return to a stack frame.\n\ |
7061 | \n\ | |
7062 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7063 | \n\ | |
7064 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7065 | add_com_alias ("b", "break", class_run, 1); | |
7066 | add_com_alias ("br", "break", class_run, 1); | |
7067 | add_com_alias ("bre", "break", class_run, 1); | |
7068 | add_com_alias ("brea", "break", class_run, 1); | |
7069 | ||
c5aa993b JM |
7070 | add_com ("xbreak", class_breakpoint, break_at_finish_command, |
7071 | concat ("Set breakpoint at procedure exit. \n\ | |
c906108c SS |
7072 | Argument may be function name, or \"*\" and an address.\n\ |
7073 | If function is specified, break at end of code for that function.\n\ | |
7074 | If an address is specified, break at the end of the function that contains \n\ | |
7075 | that exact address.\n", | |
c5aa993b | 7076 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7077 | This is useful for breaking on return to a stack frame.\n\ |
7078 | \n\ | |
7079 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7080 | \n\ | |
7081 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7082 | add_com_alias ("xb", "xbreak", class_breakpoint, 1); | |
7083 | add_com_alias ("xbr", "xbreak", class_breakpoint, 1); | |
7084 | add_com_alias ("xbre", "xbreak", class_breakpoint, 1); | |
7085 | add_com_alias ("xbrea", "xbreak", class_breakpoint, 1); | |
7086 | ||
7087 | if (xdb_commands) | |
7088 | { | |
7089 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7090 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
7091 | add_com ("bx", class_breakpoint, break_at_finish_at_depth_command, | |
c5aa993b | 7092 | "Set breakpoint at procedure exit. Either there should\n\ |
c906108c SS |
7093 | be no argument or the argument must be a depth.\n"); |
7094 | } | |
7095 | ||
7096 | if (dbx_commands) | |
7097 | { | |
c5aa993b JM |
7098 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7099 | "Break in function/address or break at a line in the current file.", | |
7100 | &stoplist, "stop ", 1, &cmdlist); | |
7101 | add_cmd ("in", class_breakpoint, stopin_command, | |
7102 | "Break in function or address.\n", &stoplist); | |
7103 | add_cmd ("at", class_breakpoint, stopat_command, | |
7104 | "Break at a line in the current file.\n", &stoplist); | |
7105 | add_com ("status", class_info, breakpoints_info, | |
7106 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7107 | The \"Type\" column indicates one of:\n\ |
7108 | \tbreakpoint - normal breakpoint\n\ | |
7109 | \twatchpoint - watchpoint\n\ | |
7110 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7111 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7112 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7113 | address and file/line number respectively.\n\n", | |
c5aa993b | 7114 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7115 | are set to the address of the last breakpoint listed.\n\n\ |
7116 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7117 | breakpoint set.", NULL)); | |
7118 | } | |
7119 | ||
7120 | add_info ("breakpoints", breakpoints_info, | |
7121 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7122 | The \"Type\" column indicates one of:\n\ | |
7123 | \tbreakpoint - normal breakpoint\n\ | |
7124 | \twatchpoint - watchpoint\n\ | |
7125 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7126 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7127 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7128 | address and file/line number respectively.\n\n", | |
c5aa993b | 7129 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7130 | are set to the address of the last breakpoint listed.\n\n\ |
7131 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7132 | breakpoint set.", NULL)); | |
7133 | ||
7134 | if (xdb_commands) | |
c5aa993b JM |
7135 | add_com ("lb", class_breakpoint, breakpoints_info, |
7136 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7137 | The \"Type\" column indicates one of:\n\ |
7138 | \tbreakpoint - normal breakpoint\n\ | |
7139 | \twatchpoint - watchpoint\n\ | |
7140 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7141 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7142 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7143 | address and file/line number respectively.\n\n", | |
c5aa993b | 7144 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7145 | are set to the address of the last breakpoint listed.\n\n\ |
7146 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7147 | breakpoint set.", NULL)); | |
7148 | ||
c906108c | 7149 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7150 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7151 | The \"Type\" column indicates one of:\n\ |
7152 | \tbreakpoint - normal breakpoint\n\ | |
7153 | \twatchpoint - watchpoint\n\ | |
7154 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7155 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7156 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7157 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7158 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7159 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7160 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7161 | address and file/line number respectively.\n\n", | |
c5aa993b | 7162 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7163 | are set to the address of the last breakpoint listed.\n\n\ |
7164 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7165 | breakpoint set.", NULL), | |
7166 | &maintenanceinfolist); | |
7167 | ||
c906108c | 7168 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7169 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7170 | Raised signals may be caught:\n\ |
7171 | \tcatch signal - all signals\n\ | |
7172 | \tcatch signal <signame> - a particular signal\n\ | |
7173 | Raised exceptions may be caught:\n\ | |
7174 | \tcatch throw - all exceptions, when thrown\n\ | |
7175 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7176 | \tcatch catch - all exceptions, when caught\n\ | |
7177 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7178 | Thread or process events may be caught:\n\ | |
7179 | \tcatch thread_start - any threads, just after creation\n\ | |
7180 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7181 | \tcatch thread_join - any threads, just after joins\n\ | |
7182 | Process events may be caught:\n\ | |
7183 | \tcatch start - any processes, just after creation\n\ | |
7184 | \tcatch exit - any processes, just before expiration\n\ | |
7185 | \tcatch fork - calls to fork()\n\ | |
7186 | \tcatch vfork - calls to vfork()\n\ | |
7187 | \tcatch exec - calls to exec()\n\ | |
7188 | Dynamically-linked library events may be caught:\n\ | |
7189 | \tcatch load - loads of any library\n\ | |
7190 | \tcatch load <libname> - loads of a particular library\n\ | |
7191 | \tcatch unload - unloads of any library\n\ | |
7192 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7193 | The act of your program's execution stopping may also be caught:\n\ | |
7194 | \tcatch stop\n\n\ | |
7195 | C++ exceptions may be caught:\n\ | |
7196 | \tcatch throw - all exceptions, when thrown\n\ | |
7197 | \tcatch catch - all exceptions, when caught\n\ | |
7198 | \n\ | |
7199 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7200 | after a fork or vfork is caught.\n\n\ | |
7201 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7202 | |
c906108c | 7203 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7204 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7205 | Args like \"catch\" command.\n\ |
7206 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7207 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7208 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b JM |
7209 | |
7210 | add_com ("watch", class_breakpoint, watch_command, | |
c906108c SS |
7211 | "Set a watchpoint for an expression.\n\ |
7212 | A watchpoint stops execution of your program whenever the value of\n\ | |
7213 | an expression changes."); | |
7214 | ||
7215 | add_com ("rwatch", class_breakpoint, rwatch_command, | |
7216 | "Set a read watchpoint for an expression.\n\ | |
7217 | A watchpoint stops execution of your program whenever the value of\n\ | |
7218 | an expression is read."); | |
7219 | ||
7220 | add_com ("awatch", class_breakpoint, awatch_command, | |
7221 | "Set a watchpoint for an expression.\n\ | |
7222 | A watchpoint stops execution of your program whenever the value of\n\ | |
7223 | an expression is either read or written."); | |
7224 | ||
7225 | add_info ("watchpoints", breakpoints_info, | |
7226 | "Synonym for ``info breakpoints''."); | |
7227 | ||
7228 | ||
7229 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7230 | (char *) &can_use_hw_watchpoints, |
7231 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7232 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7233 | such is available. (However, any hardware watchpoints that were\n\ | |
7234 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7235 | hardware.)", | |
c5aa993b | 7236 | &setlist); |
c906108c SS |
7237 | add_show_from_set (c, &showlist); |
7238 | ||
7239 | can_use_hw_watchpoints = 1; | |
7240 | } |