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