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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" | |
8b93c638 JM |
42 | #ifdef UI_OUT |
43 | #include "ui-out.h" | |
44 | #endif | |
c906108c | 45 | |
104c1213 JM |
46 | #include "gdb-events.h" |
47 | ||
c906108c SS |
48 | /* Prototypes for local functions. */ |
49 | ||
c2c6d25f JM |
50 | static void until_break_command_continuation (struct continuation_arg *arg); |
51 | ||
c906108c SS |
52 | static void |
53 | catch_command_1 PARAMS ((char *, int, int)); | |
54 | ||
55 | static void | |
56 | enable_delete_command PARAMS ((char *, int)); | |
57 | ||
58 | static void | |
59 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
60 | ||
61 | static void | |
62 | enable_once_command PARAMS ((char *, int)); | |
63 | ||
64 | static void | |
65 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
66 | ||
67 | static void | |
68 | disable_command PARAMS ((char *, int)); | |
69 | ||
70 | static void | |
71 | enable_command PARAMS ((char *, int)); | |
72 | ||
73 | static void | |
c5aa993b | 74 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); |
c906108c SS |
75 | |
76 | static void | |
77 | ignore_command PARAMS ((char *, int)); | |
78 | ||
79 | static int breakpoint_re_set_one PARAMS ((PTR)); | |
80 | ||
81 | static void | |
82 | clear_command PARAMS ((char *, int)); | |
83 | ||
84 | static void | |
85 | catch_command PARAMS ((char *, int)); | |
86 | ||
87 | static void | |
88 | handle_gnu_4_16_catch_command PARAMS ((char *, int, int)); | |
89 | ||
90 | static struct symtabs_and_lines | |
91 | get_catch_sals PARAMS ((int)); | |
92 | ||
93 | static void | |
94 | watch_command PARAMS ((char *, int)); | |
95 | ||
96 | static int | |
97 | can_use_hardware_watchpoint PARAMS ((struct value *)); | |
98 | ||
7a292a7a SS |
99 | static void break_at_finish_command PARAMS ((char *, int)); |
100 | static void break_at_finish_at_depth_command PARAMS ((char *, int)); | |
101 | ||
c906108c SS |
102 | void |
103 | tbreak_command PARAMS ((char *, int)); | |
104 | ||
7a292a7a SS |
105 | static void tbreak_at_finish_command PARAMS ((char *, int)); |
106 | ||
c906108c SS |
107 | static void |
108 | break_command_1 PARAMS ((char *, int, int)); | |
109 | ||
110 | static void | |
111 | mention PARAMS ((struct breakpoint *)); | |
112 | ||
113 | struct breakpoint * | |
c5aa993b | 114 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); |
c906108c SS |
115 | |
116 | static void | |
117 | check_duplicates PARAMS ((CORE_ADDR, asection *)); | |
118 | ||
119 | static void | |
120 | describe_other_breakpoints PARAMS ((CORE_ADDR, asection *)); | |
121 | ||
122 | static void | |
123 | breakpoints_info PARAMS ((char *, int)); | |
124 | ||
125 | static void | |
126 | breakpoint_1 PARAMS ((int, int)); | |
127 | ||
128 | static bpstat | |
c5aa993b | 129 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); |
c906108c SS |
130 | |
131 | static int breakpoint_cond_eval PARAMS ((PTR)); | |
132 | ||
133 | static void | |
134 | cleanup_executing_breakpoints PARAMS ((PTR)); | |
135 | ||
136 | static void | |
137 | commands_command PARAMS ((char *, int)); | |
138 | ||
139 | static void | |
140 | condition_command PARAMS ((char *, int)); | |
141 | ||
142 | static int | |
5c44784c | 143 | get_number_trailer PARAMS ((char **, int)); |
c906108c SS |
144 | |
145 | void | |
146 | set_breakpoint_count PARAMS ((int)); | |
147 | ||
148 | #if 0 | |
149 | static struct breakpoint * | |
c5aa993b | 150 | create_temp_exception_breakpoint PARAMS ((CORE_ADDR)); |
c906108c SS |
151 | #endif |
152 | ||
c5aa993b JM |
153 | typedef enum |
154 | { | |
155 | mark_inserted, | |
156 | mark_uninserted | |
157 | } | |
158 | insertion_state_t; | |
c906108c SS |
159 | |
160 | static int | |
161 | remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t)); | |
162 | ||
e514a9d6 JM |
163 | static enum print_stop_action print_it_typical PARAMS ((bpstat)); |
164 | ||
165 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 166 | |
c5aa993b JM |
167 | typedef struct |
168 | { | |
169 | enum exception_event_kind kind; | |
170 | int enable; | |
171 | } | |
172 | args_for_catchpoint_enable; | |
c906108c SS |
173 | |
174 | static int watchpoint_check PARAMS ((PTR)); | |
175 | ||
176 | static int cover_target_enable_exception_callback PARAMS ((PTR)); | |
177 | ||
c906108c SS |
178 | static void maintenance_info_breakpoints PARAMS ((char *, int)); |
179 | ||
180 | #ifdef GET_LONGJMP_TARGET | |
181 | static void create_longjmp_breakpoint PARAMS ((char *)); | |
182 | #endif | |
183 | ||
184 | static int hw_breakpoint_used_count PARAMS ((void)); | |
185 | ||
186 | static int hw_watchpoint_used_count PARAMS ((enum bptype, int *)); | |
187 | ||
188 | static void hbreak_command PARAMS ((char *, int)); | |
189 | ||
190 | static void thbreak_command PARAMS ((char *, int)); | |
191 | ||
192 | static void watch_command_1 PARAMS ((char *, int, int)); | |
193 | ||
194 | static void rwatch_command PARAMS ((char *, int)); | |
195 | ||
196 | static void awatch_command PARAMS ((char *, int)); | |
197 | ||
198 | static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); | |
199 | ||
53a5351d JM |
200 | static void solib_load_unload_1 PARAMS ((char *hookname, |
201 | int tempflag, | |
202 | char *dll_pathname, | |
203 | char *cond_string, | |
204 | enum bptype bp_kind)); | |
7a292a7a | 205 | |
53a5351d JM |
206 | static void create_fork_vfork_event_catchpoint PARAMS ((int tempflag, |
207 | char *cond_string, | |
208 | enum bptype bp_kind)); | |
7a292a7a | 209 | |
53a5351d JM |
210 | static void break_at_finish_at_depth_command_1 PARAMS ((char *arg, |
211 | int flag, | |
212 | int from_tty)); | |
7a292a7a | 213 | |
53a5351d JM |
214 | static void break_at_finish_command_1 PARAMS ((char *arg, |
215 | int flag, | |
216 | int from_tty)); | |
7a292a7a SS |
217 | |
218 | static void stop_command PARAMS ((char *arg, int from_tty)); | |
219 | ||
220 | static void stopin_command PARAMS ((char *arg, int from_tty)); | |
221 | ||
222 | static void stopat_command PARAMS ((char *arg, int from_tty)); | |
223 | ||
224 | static char *ep_find_event_name_end PARAMS ((char *arg)); | |
225 | ||
226 | static char *ep_parse_optional_if_clause PARAMS ((char **arg)); | |
227 | ||
228 | static char *ep_parse_optional_filename PARAMS ((char **arg)); | |
229 | ||
e514a9d6 | 230 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
53a5351d JM |
231 | static void catch_exec_command_1 PARAMS ((char *arg, int tempflag, |
232 | int from_tty)); | |
e514a9d6 | 233 | #endif |
7a292a7a | 234 | |
53a5351d JM |
235 | static void create_exception_catchpoint |
236 | PARAMS ((int tempflag, char *cond_string, | |
237 | enum exception_event_kind ex_event, | |
238 | struct symtab_and_line * sal)); | |
7a292a7a | 239 | |
53a5351d JM |
240 | static void catch_exception_command_1 |
241 | PARAMS ((enum exception_event_kind ex_event, | |
242 | char *arg, int tempflag, int from_tty)); | |
7a292a7a SS |
243 | |
244 | static void tcatch_command PARAMS ((char *arg, int from_tty)); | |
245 | ||
246 | static void ep_skip_leading_whitespace PARAMS ((char **s)); | |
247 | ||
c906108c SS |
248 | /* Prototypes for exported functions. */ |
249 | ||
250 | static void | |
251 | awatch_command PARAMS ((char *, int)); | |
252 | ||
253 | static void | |
254 | do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); | |
255 | ||
256 | /* If FALSE, gdb will not use hardware support for watchpoints, even | |
257 | if such is available. */ | |
258 | static int can_use_hw_watchpoints; | |
259 | ||
c906108c SS |
260 | void _initialize_breakpoint PARAMS ((void)); |
261 | ||
262 | void set_breakpoint_count PARAMS ((int)); | |
263 | ||
c5aa993b | 264 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 265 | |
c906108c | 266 | static int internal_breakpoint_number = -1; |
c906108c SS |
267 | |
268 | /* Are we executing breakpoint commands? */ | |
269 | static int executing_breakpoint_commands; | |
270 | ||
271 | /* Walk the following statement or block through all breakpoints. | |
272 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
273 | breakpoint. */ | |
274 | ||
5c44784c | 275 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 276 | |
5c44784c JM |
277 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
278 | for (B = breakpoint_chain; \ | |
279 | B ? (TMP=B->next, 1): 0; \ | |
280 | B = TMP) | |
c906108c SS |
281 | |
282 | /* True if SHIFT_INST_REGS defined, false otherwise. */ | |
283 | ||
284 | int must_shift_inst_regs = | |
285 | #if defined(SHIFT_INST_REGS) | |
286 | 1 | |
287 | #else | |
288 | 0 | |
289 | #endif | |
c5aa993b | 290 | ; |
c906108c SS |
291 | |
292 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ | |
293 | ||
294 | int show_breakpoint_hit_counts = 1; | |
295 | ||
296 | /* Chain of all breakpoints defined. */ | |
297 | ||
298 | struct breakpoint *breakpoint_chain; | |
299 | ||
300 | /* Number of last breakpoint made. */ | |
301 | ||
302 | int breakpoint_count; | |
303 | ||
c5aa993b JM |
304 | /* Pointer to current exception event record */ |
305 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
306 | |
307 | /* Indicator of whether exception catchpoints should be nuked | |
308 | between runs of a program */ | |
309 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 310 | |
c906108c SS |
311 | /* Indicator of when exception catchpoints set-up should be |
312 | reinitialized -- e.g. when program is re-run */ | |
313 | int exception_support_initialized = 0; | |
314 | ||
315 | /* This function returns a pointer to the string representation of the | |
316 | pathname of the dynamically-linked library that has just been | |
317 | loaded. | |
318 | ||
319 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
320 | or undefined results are guaranteed. | |
321 | ||
322 | This string's contents are only valid immediately after the | |
323 | inferior has stopped in the dynamic linker hook, and becomes | |
324 | invalid as soon as the inferior is continued. Clients should make | |
325 | a copy of this string if they wish to continue the inferior and | |
326 | then access the string. */ | |
327 | ||
328 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
329 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
330 | #endif | |
331 | ||
332 | /* This function returns a pointer to the string representation of the | |
333 | pathname of the dynamically-linked library that has just been | |
334 | unloaded. | |
335 | ||
336 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
337 | TRUE, or undefined results are guaranteed. | |
338 | ||
339 | This string's contents are only valid immediately after the | |
340 | inferior has stopped in the dynamic linker hook, and becomes | |
341 | invalid as soon as the inferior is continued. Clients should make | |
342 | a copy of this string if they wish to continue the inferior and | |
343 | then access the string. */ | |
344 | ||
345 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
346 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
347 | #endif | |
348 | ||
349 | /* This function is called by the "catch load" command. It allows the | |
350 | debugger to be notified by the dynamic linker when a specified | |
351 | library file (or any library file, if filename is NULL) is loaded. */ | |
352 | ||
353 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
354 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
355 | error ("catch of library loads not yet implemented on this platform") | |
356 | #endif | |
357 | ||
358 | /* This function is called by the "catch unload" command. It allows | |
359 | the debugger to be notified by the dynamic linker when a specified | |
360 | library file (or any library file, if filename is NULL) is | |
361 | unloaded. */ | |
362 | ||
363 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
364 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
365 | error ("catch of library unloads not yet implemented on this platform") | |
366 | #endif | |
367 | ||
368 | /* Set breakpoint count to NUM. */ | |
369 | ||
370 | void | |
371 | set_breakpoint_count (num) | |
372 | int num; | |
373 | { | |
374 | breakpoint_count = num; | |
375 | set_internalvar (lookup_internalvar ("bpnum"), | |
376 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
377 | } | |
378 | ||
379 | /* Used in run_command to zero the hit count when a new run starts. */ | |
380 | ||
381 | void | |
382 | clear_breakpoint_hit_counts () | |
383 | { | |
384 | struct breakpoint *b; | |
385 | ||
386 | ALL_BREAKPOINTS (b) | |
387 | b->hit_count = 0; | |
388 | } | |
389 | ||
390 | /* Default address, symtab and line to put a breakpoint at | |
391 | for "break" command with no arg. | |
392 | if default_breakpoint_valid is zero, the other three are | |
393 | not valid, and "break" with no arg is an error. | |
394 | ||
395 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
396 | ||
397 | int default_breakpoint_valid; | |
398 | CORE_ADDR default_breakpoint_address; | |
399 | struct symtab *default_breakpoint_symtab; | |
400 | int default_breakpoint_line; | |
401 | \f | |
402 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
403 | Advance *PP after the string and any trailing whitespace. | |
404 | ||
405 | Currently the string can either be a number or "$" followed by the name | |
406 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
407 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
408 | ||
409 | TRAILER is a character which can be found after the number; most | |
410 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 411 | static int |
5c44784c | 412 | get_number_trailer (pp, trailer) |
c906108c | 413 | char **pp; |
5c44784c | 414 | int trailer; |
c906108c | 415 | { |
5c44784c | 416 | int retval = 0; /* default */ |
c906108c SS |
417 | char *p = *pp; |
418 | ||
419 | if (p == NULL) | |
420 | /* Empty line means refer to the last breakpoint. */ | |
421 | return breakpoint_count; | |
422 | else if (*p == '$') | |
423 | { | |
424 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 425 | to pass to lookup_internalvar(). */ |
c906108c SS |
426 | char *varname; |
427 | char *start = ++p; | |
428 | value_ptr val; | |
429 | ||
430 | while (isalnum (*p) || *p == '_') | |
431 | p++; | |
432 | varname = (char *) alloca (p - start + 1); | |
433 | strncpy (varname, start, p - start); | |
434 | varname[p - start] = '\0'; | |
435 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
436 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
437 | retval = (int) value_as_long (val); | |
438 | else | |
439 | { | |
440 | printf_filtered ("Convenience variable must have integer value.\n"); | |
441 | retval = 0; | |
442 | } | |
c906108c SS |
443 | } |
444 | else | |
445 | { | |
446 | if (*p == '-') | |
447 | ++p; | |
448 | while (*p >= '0' && *p <= '9') | |
449 | ++p; | |
450 | if (p == *pp) | |
451 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
452 | { |
453 | /* Skip non-numeric token */ | |
454 | while (*p && !isspace((int) *p)) | |
455 | ++p; | |
456 | /* Return zero, which caller must interpret as error. */ | |
457 | retval = 0; | |
458 | } | |
459 | else | |
460 | retval = atoi (*pp); | |
461 | } | |
462 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
463 | { | |
464 | /* Trailing junk: return 0 and let caller print error msg. */ | |
465 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
466 | ++p; | |
467 | retval = 0; | |
c906108c | 468 | } |
c906108c SS |
469 | while (isspace (*p)) |
470 | p++; | |
471 | *pp = p; | |
472 | return retval; | |
473 | } | |
5c44784c | 474 | |
11cf8741 | 475 | |
5c44784c JM |
476 | /* Like get_number_trailer, but don't allow a trailer. */ |
477 | int | |
478 | get_number (pp) | |
479 | char **pp; | |
480 | { | |
481 | return get_number_trailer (pp, '\0'); | |
482 | } | |
483 | ||
484 | /* Parse a number or a range. | |
485 | * A number will be of the form handled by get_number. | |
486 | * A range will be of the form <number1> - <number2>, and | |
487 | * will represent all the integers between number1 and number2, | |
488 | * inclusive. | |
489 | * | |
490 | * While processing a range, this fuction is called iteratively; | |
491 | * At each call it will return the next value in the range. | |
492 | * | |
493 | * At the beginning of parsing a range, the char pointer PP will | |
494 | * be advanced past <number1> and left pointing at the '-' token. | |
495 | * Subsequent calls will not advance the pointer until the range | |
496 | * is completed. The call that completes the range will advance | |
497 | * pointer PP past <number2>. | |
498 | */ | |
499 | ||
500 | int | |
501 | get_number_or_range (pp) | |
502 | char **pp; | |
503 | { | |
504 | static int last_retval, end_value; | |
505 | static char *end_ptr; | |
506 | static int in_range = 0; | |
507 | ||
508 | if (**pp != '-') | |
509 | { | |
510 | /* Default case: pp is pointing either to a solo number, | |
511 | or to the first number of a range. */ | |
512 | last_retval = get_number_trailer (pp, '-'); | |
513 | if (**pp == '-') | |
514 | { | |
515 | char **temp; | |
516 | ||
517 | /* This is the start of a range (<number1> - <number2>). | |
518 | Skip the '-', parse and remember the second number, | |
519 | and also remember the end of the final token. */ | |
520 | ||
521 | temp = &end_ptr; | |
522 | end_ptr = *pp + 1; | |
523 | while (isspace ((int) *end_ptr)) | |
524 | end_ptr++; /* skip white space */ | |
525 | end_value = get_number (temp); | |
526 | if (end_value < last_retval) | |
527 | { | |
528 | error ("inverted range"); | |
529 | } | |
530 | else if (end_value == last_retval) | |
531 | { | |
532 | /* degenerate range (number1 == number2). Advance the | |
533 | token pointer so that the range will be treated as a | |
534 | single number. */ | |
535 | *pp = end_ptr; | |
536 | } | |
537 | else | |
538 | in_range = 1; | |
539 | } | |
540 | } | |
541 | else if (! in_range) | |
542 | error ("negative value"); | |
543 | else | |
544 | { | |
545 | /* pp points to the '-' that betokens a range. All | |
546 | number-parsing has already been done. Return the next | |
547 | integer value (one greater than the saved previous value). | |
548 | Do not advance the token pointer 'pp' until the end of range | |
549 | is reached. */ | |
550 | ||
551 | if (++last_retval == end_value) | |
552 | { | |
553 | /* End of range reached; advance token pointer. */ | |
554 | *pp = end_ptr; | |
555 | in_range = 0; | |
556 | } | |
557 | } | |
558 | return last_retval; | |
559 | } | |
560 | ||
561 | ||
c906108c SS |
562 | \f |
563 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
564 | ||
565 | static void | |
566 | condition_command (arg, from_tty) | |
567 | char *arg; | |
568 | int from_tty; | |
569 | { | |
570 | register struct breakpoint *b; | |
571 | char *p; | |
572 | register int bnum; | |
573 | ||
574 | if (arg == 0) | |
575 | error_no_arg ("breakpoint number"); | |
576 | ||
577 | p = arg; | |
578 | bnum = get_number (&p); | |
5c44784c JM |
579 | if (bnum == 0) |
580 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
581 | |
582 | ALL_BREAKPOINTS (b) | |
583 | if (b->number == bnum) | |
c5aa993b JM |
584 | { |
585 | if (b->cond) | |
586 | { | |
587 | free ((PTR) b->cond); | |
588 | b->cond = 0; | |
589 | } | |
590 | if (b->cond_string != NULL) | |
591 | free ((PTR) b->cond_string); | |
c906108c | 592 | |
c5aa993b JM |
593 | if (*p == 0) |
594 | { | |
595 | b->cond = 0; | |
596 | b->cond_string = NULL; | |
597 | if (from_tty) | |
598 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
599 | } | |
600 | else | |
601 | { | |
602 | arg = p; | |
603 | /* I don't know if it matters whether this is the string the user | |
604 | typed in or the decompiled expression. */ | |
605 | b->cond_string = savestring (arg, strlen (arg)); | |
606 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); | |
607 | if (*arg) | |
608 | error ("Junk at end of expression"); | |
609 | } | |
610 | breakpoints_changed (); | |
611 | return; | |
612 | } | |
c906108c SS |
613 | |
614 | error ("No breakpoint number %d.", bnum); | |
615 | } | |
616 | ||
617 | /* ARGSUSED */ | |
618 | static void | |
619 | commands_command (arg, from_tty) | |
620 | char *arg; | |
621 | int from_tty; | |
622 | { | |
623 | register struct breakpoint *b; | |
624 | char *p; | |
625 | register int bnum; | |
626 | struct command_line *l; | |
627 | ||
628 | /* If we allowed this, we would have problems with when to | |
629 | free the storage, if we change the commands currently | |
630 | being read from. */ | |
631 | ||
632 | if (executing_breakpoint_commands) | |
633 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
634 | ||
635 | p = arg; | |
636 | bnum = get_number (&p); | |
5c44784c | 637 | |
c906108c SS |
638 | if (p && *p) |
639 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 640 | |
c906108c SS |
641 | ALL_BREAKPOINTS (b) |
642 | if (b->number == bnum) | |
c5aa993b JM |
643 | { |
644 | char tmpbuf[128]; | |
53a5351d JM |
645 | sprintf (tmpbuf, |
646 | "Type commands for when breakpoint %d is hit, one per line.", | |
647 | bnum); | |
c5aa993b JM |
648 | l = read_command_lines (tmpbuf, from_tty); |
649 | free_command_lines (&b->commands); | |
650 | b->commands = l; | |
651 | breakpoints_changed (); | |
652 | return; | |
653 | } | |
c906108c SS |
654 | error ("No breakpoint number %d.", bnum); |
655 | } | |
656 | \f | |
657 | /* Like target_read_memory() but if breakpoints are inserted, return | |
658 | the shadow contents instead of the breakpoints themselves. | |
659 | ||
660 | Read "memory data" from whatever target or inferior we have. | |
661 | Returns zero if successful, errno value if not. EIO is used | |
662 | for address out of bounds. If breakpoints are inserted, returns | |
663 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
664 | ||
665 | int | |
666 | read_memory_nobpt (memaddr, myaddr, len) | |
667 | CORE_ADDR memaddr; | |
668 | char *myaddr; | |
669 | unsigned len; | |
670 | { | |
671 | int status; | |
672 | struct breakpoint *b; | |
673 | CORE_ADDR bp_addr = 0; | |
674 | int bp_size = 0; | |
675 | ||
676 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
677 | /* No breakpoints on this machine. */ | |
678 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 679 | |
c906108c | 680 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
681 | { |
682 | if (b->type == bp_none) | |
53a5351d JM |
683 | warning ("reading through apparently deleted breakpoint #%d?", |
684 | b->number); | |
c5aa993b JM |
685 | |
686 | /* memory breakpoint? */ | |
687 | if (b->type == bp_watchpoint | |
688 | || b->type == bp_hardware_watchpoint | |
689 | || b->type == bp_read_watchpoint | |
690 | || b->type == bp_access_watchpoint) | |
691 | continue; | |
692 | /* bp in memory? */ | |
693 | if (!b->inserted) | |
694 | continue; | |
695 | /* Addresses and length of the part of the breakpoint that | |
696 | we need to copy. */ | |
697 | /* XXXX The m68k, sh and h8300 have different local and remote | |
698 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
699 | correctly determine the breakpoints memory address and size | |
700 | for these targets. */ | |
701 | bp_addr = b->address; | |
702 | bp_size = 0; | |
703 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
704 | continue; | |
705 | if (bp_size == 0) | |
706 | /* bp isn't valid */ | |
707 | continue; | |
708 | if (bp_addr + bp_size <= memaddr) | |
709 | /* The breakpoint is entirely before the chunk of memory we | |
710 | are reading. */ | |
711 | continue; | |
712 | if (bp_addr >= memaddr + len) | |
713 | /* The breakpoint is entirely after the chunk of memory we are | |
714 | reading. */ | |
715 | continue; | |
716 | /* Copy the breakpoint from the shadow contents, and recurse for | |
717 | the things before and after. */ | |
c906108c | 718 | { |
c5aa993b JM |
719 | /* Offset within shadow_contents. */ |
720 | int bptoffset = 0; | |
c906108c | 721 | |
c5aa993b JM |
722 | if (bp_addr < memaddr) |
723 | { | |
724 | /* Only copy the second part of the breakpoint. */ | |
725 | bp_size -= memaddr - bp_addr; | |
726 | bptoffset = memaddr - bp_addr; | |
727 | bp_addr = memaddr; | |
728 | } | |
729 | ||
730 | if (bp_addr + bp_size > memaddr + len) | |
731 | { | |
732 | /* Only copy the first part of the breakpoint. */ | |
733 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
734 | } | |
735 | ||
736 | memcpy (myaddr + bp_addr - memaddr, | |
737 | b->shadow_contents + bptoffset, bp_size); | |
738 | ||
739 | if (bp_addr > memaddr) | |
740 | { | |
741 | /* Copy the section of memory before the breakpoint. */ | |
742 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
743 | if (status != 0) | |
744 | return status; | |
745 | } | |
746 | ||
747 | if (bp_addr + bp_size < memaddr + len) | |
748 | { | |
749 | /* Copy the section of memory after the breakpoint. */ | |
750 | status = read_memory_nobpt | |
751 | (bp_addr + bp_size, | |
752 | myaddr + bp_addr + bp_size - memaddr, | |
753 | memaddr + len - (bp_addr + bp_size)); | |
754 | if (status != 0) | |
755 | return status; | |
756 | } | |
757 | return 0; | |
c906108c | 758 | } |
c5aa993b | 759 | } |
c906108c SS |
760 | /* Nothing overlaps. Just call read_memory_noerr. */ |
761 | return target_read_memory (memaddr, myaddr, len); | |
762 | } | |
c906108c | 763 | \f |
c5aa993b | 764 | |
c906108c SS |
765 | /* insert_breakpoints is used when starting or continuing the program. |
766 | remove_breakpoints is used when the program stops. | |
767 | Both return zero if successful, | |
768 | or an `errno' value if could not write the inferior. */ | |
769 | ||
770 | int | |
771 | insert_breakpoints () | |
772 | { | |
773 | register struct breakpoint *b, *temp; | |
53a5351d | 774 | int return_val = 0; /* return success code. */ |
c906108c SS |
775 | int val = 0; |
776 | int disabled_breaks = 0; | |
777 | ||
778 | static char message1[] = "Error inserting catchpoint %d:\n"; | |
779 | static char message[sizeof (message1) + 30]; | |
780 | ||
781 | ||
782 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 783 | { |
c2c6d25f JM |
784 | if (b->enable == permanent) |
785 | /* Permanent breakpoints cannot be inserted or removed. */ | |
786 | continue; | |
787 | else if (b->type != bp_watchpoint | |
c5aa993b JM |
788 | && b->type != bp_hardware_watchpoint |
789 | && b->type != bp_read_watchpoint | |
790 | && b->type != bp_access_watchpoint | |
791 | && b->type != bp_catch_fork | |
792 | && b->type != bp_catch_vfork | |
793 | && b->type != bp_catch_exec | |
794 | && b->type != bp_catch_throw | |
795 | && b->type != bp_catch_catch | |
796 | && b->enable != disabled | |
797 | && b->enable != shlib_disabled | |
798 | && b->enable != call_disabled | |
799 | && !b->inserted | |
800 | && !b->duplicate) | |
801 | { | |
802 | if (b->type == bp_hardware_breakpoint) | |
803 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
804 | else | |
805 | { | |
806 | /* Check to see if breakpoint is in an overlay section; | |
807 | if so, we should set the breakpoint at the LMA address. | |
808 | Only if the section is currently mapped should we ALSO | |
809 | set a break at the VMA address. */ | |
810 | if (overlay_debugging && b->section && | |
811 | section_is_overlay (b->section)) | |
812 | { | |
813 | CORE_ADDR addr; | |
814 | ||
815 | addr = overlay_unmapped_address (b->address, b->section); | |
816 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
817 | /* This would be the time to check val, to see if the | |
818 | breakpoint write to the load address succeeded. | |
819 | However, this might be an ordinary occurrance, eg. if | |
820 | the unmapped overlay is in ROM. */ | |
821 | val = 0; /* in case unmapped address failed */ | |
822 | if (section_is_mapped (b->section)) | |
823 | val = target_insert_breakpoint (b->address, | |
824 | b->shadow_contents); | |
825 | } | |
826 | else /* ordinary (non-overlay) address */ | |
827 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
828 | } | |
829 | if (val) | |
830 | { | |
831 | /* Can't set the breakpoint. */ | |
c906108c | 832 | #if defined (DISABLE_UNSETTABLE_BREAK) |
c5aa993b JM |
833 | if (DISABLE_UNSETTABLE_BREAK (b->address)) |
834 | { | |
835 | /* See also: disable_breakpoints_in_shlibs. */ | |
836 | val = 0; | |
837 | b->enable = shlib_disabled; | |
838 | if (!disabled_breaks) | |
839 | { | |
840 | target_terminal_ours_for_output (); | |
53a5351d JM |
841 | warning ("Cannot insert breakpoint %d:", b->number); |
842 | warning ("Temporarily disabling shared library breakpoints:"); | |
c5aa993b JM |
843 | } |
844 | disabled_breaks = 1; | |
53a5351d | 845 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
846 | } |
847 | else | |
c906108c | 848 | #endif |
c5aa993b JM |
849 | { |
850 | target_terminal_ours_for_output (); | |
53a5351d | 851 | warning ("Cannot insert breakpoint %d:", b->number); |
c906108c | 852 | #ifdef ONE_PROCESS_WRITETEXT |
53a5351d | 853 | warning ("The same program may be running in another process."); |
c906108c | 854 | #endif |
53a5351d | 855 | memory_error (val, b->address); /* which bombs us out */ |
c5aa993b JM |
856 | } |
857 | } | |
858 | else | |
859 | b->inserted = 1; | |
53a5351d JM |
860 | |
861 | if (val) | |
862 | return_val = val; /* remember failure */ | |
c5aa993b | 863 | } |
c906108c | 864 | else if (ep_is_exception_catchpoint (b) |
c5aa993b JM |
865 | && b->enable != disabled |
866 | && b->enable != shlib_disabled | |
867 | && b->enable != call_disabled | |
868 | && !b->inserted | |
869 | && !b->duplicate) | |
c906108c SS |
870 | |
871 | { | |
c5aa993b JM |
872 | /* If we get here, we must have a callback mechanism for exception |
873 | events -- with g++ style embedded label support, we insert | |
874 | ordinary breakpoints and not catchpoints. */ | |
53a5351d JM |
875 | /* Format possible error message */ |
876 | sprintf (message, message1, b->number); | |
c5aa993b JM |
877 | |
878 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
879 | if (val) | |
880 | { | |
881 | /* Couldn't set breakpoint for some reason */ | |
882 | target_terminal_ours_for_output (); | |
53a5351d JM |
883 | warning ("Cannot insert catchpoint %d; disabling it.", |
884 | b->number); | |
c5aa993b JM |
885 | b->enable = disabled; |
886 | } | |
887 | else | |
888 | { | |
889 | /* Bp set, now make sure callbacks are enabled */ | |
c906108c | 890 | int val; |
c5aa993b | 891 | args_for_catchpoint_enable args; |
53a5351d JM |
892 | args.kind = b->type == bp_catch_catch ? |
893 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
894 | args.enable = 1; |
895 | val = catch_errors (cover_target_enable_exception_callback, | |
896 | &args, | |
897 | message, RETURN_MASK_ALL); | |
898 | if (val != 0 && val != -1) | |
899 | { | |
900 | b->inserted = 1; | |
901 | } | |
c5aa993b | 902 | /* Check if something went wrong; val == 0 can be ignored */ |
c906108c SS |
903 | if (val == -1) |
904 | { | |
c5aa993b | 905 | /* something went wrong */ |
c906108c | 906 | target_terminal_ours_for_output (); |
53a5351d JM |
907 | warning ("Cannot insert catchpoint %d; disabling it.", |
908 | b->number); | |
c906108c SS |
909 | b->enable = disabled; |
910 | } | |
c5aa993b | 911 | } |
53a5351d JM |
912 | |
913 | if (val) | |
914 | return_val = val; /* remember failure */ | |
c906108c SS |
915 | } |
916 | ||
c5aa993b JM |
917 | else if ((b->type == bp_hardware_watchpoint || |
918 | b->type == bp_read_watchpoint || | |
919 | b->type == bp_access_watchpoint) | |
920 | && b->enable == enabled | |
c6902688 | 921 | && b->disposition != del_at_next_stop |
c5aa993b JM |
922 | && !b->inserted |
923 | && !b->duplicate) | |
924 | { | |
925 | struct frame_info *saved_frame; | |
926 | int saved_level, within_current_scope; | |
927 | value_ptr mark = value_mark (); | |
928 | value_ptr v; | |
929 | ||
930 | /* Save the current frame and level so we can restore it after | |
931 | evaluating the watchpoint expression on its own frame. */ | |
932 | saved_frame = selected_frame; | |
933 | saved_level = selected_frame_level; | |
934 | ||
935 | /* Determine if the watchpoint is within scope. */ | |
936 | if (b->exp_valid_block == NULL) | |
937 | within_current_scope = 1; | |
938 | else | |
939 | { | |
940 | struct frame_info *fi; | |
941 | ||
942 | /* There might be no current frame at this moment if we are | |
943 | resuming from a step over a breakpoint. | |
944 | Set up current frame before trying to find the watchpoint | |
945 | frame. */ | |
946 | get_current_frame (); | |
947 | fi = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
948 | within_current_scope = (fi != NULL); | |
949 | if (within_current_scope) | |
950 | select_frame (fi, -1); | |
951 | } | |
952 | ||
953 | if (within_current_scope) | |
954 | { | |
955 | /* Evaluate the expression and cut the chain of values | |
5c44784c JM |
956 | produced off from the value chain. |
957 | ||
958 | Make sure the value returned isn't lazy; we use | |
959 | laziness to determine what memory GDB actually needed | |
960 | in order to compute the value of the expression. */ | |
c5aa993b | 961 | v = evaluate_expression (b->exp); |
5c44784c | 962 | VALUE_CONTENTS(v); |
c5aa993b JM |
963 | value_release_to_mark (mark); |
964 | ||
965 | b->val_chain = v; | |
966 | b->inserted = 1; | |
967 | ||
968 | /* Look at each value on the value chain. */ | |
969 | for (; v; v = v->next) | |
970 | { | |
5c44784c JM |
971 | /* If it's a memory location, and GDB actually needed |
972 | its contents to evaluate the expression, then we | |
973 | must watch it. */ | |
974 | if (VALUE_LVAL (v) == lval_memory | |
975 | && ! VALUE_LAZY (v)) | |
c5aa993b | 976 | { |
2e70b7b9 MS |
977 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
978 | ||
979 | /* We only watch structs and arrays if user asked | |
980 | for it explicitly, never if they just happen to | |
981 | appear in the middle of some value chain. */ | |
982 | if (v == b->val_chain | |
983 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
984 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
c5aa993b | 985 | { |
2e70b7b9 MS |
986 | CORE_ADDR addr; |
987 | int len, type; | |
988 | ||
989 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
990 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
991 | type = hw_write; | |
992 | if (b->type == bp_read_watchpoint) | |
993 | type = hw_read; | |
994 | else if (b->type == bp_access_watchpoint) | |
995 | type = hw_access; | |
996 | ||
997 | val = target_insert_watchpoint (addr, len, type); | |
998 | if (val == -1) | |
999 | { | |
1000 | /* Don't exit the loop, try to insert | |
1001 | every value on the value chain. That's | |
1002 | because we will be removing all the | |
1003 | watches below, and removing a | |
1004 | watchpoint we didn't insert could have | |
1005 | adverse effects. */ | |
1006 | b->inserted = 0; | |
1007 | } | |
1008 | val = 0; | |
c5aa993b | 1009 | } |
c5aa993b JM |
1010 | } |
1011 | } | |
1012 | /* Failure to insert a watchpoint on any memory value in the | |
1013 | value chain brings us here. */ | |
1014 | if (!b->inserted) | |
53a5351d JM |
1015 | { |
1016 | remove_breakpoint (b, mark_uninserted); | |
1017 | warning ("Could not insert hardware watchpoint %d.", | |
1018 | b->number); | |
1019 | val = -1; | |
1020 | } | |
c5aa993b JM |
1021 | } |
1022 | else | |
1023 | { | |
c6902688 | 1024 | printf_filtered ("Hardware watchpoint %d deleted ", b->number); |
53a5351d JM |
1025 | printf_filtered ("because the program has left the block \n"); |
1026 | printf_filtered ("in which its expression is valid.\n"); | |
c5aa993b JM |
1027 | if (b->related_breakpoint) |
1028 | b->related_breakpoint->disposition = del_at_next_stop; | |
1029 | b->disposition = del_at_next_stop; | |
1030 | } | |
c906108c | 1031 | |
c5aa993b JM |
1032 | /* Restore the frame and level. */ |
1033 | if ((saved_frame != selected_frame) || | |
1034 | (saved_level != selected_frame_level)) | |
c6902688 | 1035 | select_frame (saved_frame, saved_level); |
53a5351d JM |
1036 | |
1037 | if (val) | |
1038 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1039 | } |
1040 | else if ((b->type == bp_catch_fork | |
1041 | || b->type == bp_catch_vfork | |
1042 | || b->type == bp_catch_exec) | |
1043 | && b->enable == enabled | |
1044 | && !b->inserted | |
1045 | && !b->duplicate) | |
1046 | { | |
1047 | val = -1; | |
1048 | switch (b->type) | |
1049 | { | |
1050 | case bp_catch_fork: | |
1051 | val = target_insert_fork_catchpoint (inferior_pid); | |
1052 | break; | |
1053 | case bp_catch_vfork: | |
1054 | val = target_insert_vfork_catchpoint (inferior_pid); | |
1055 | break; | |
1056 | case bp_catch_exec: | |
1057 | val = target_insert_exec_catchpoint (inferior_pid); | |
1058 | break; | |
1059 | default: | |
53a5351d | 1060 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
c5aa993b JM |
1061 | break; |
1062 | } | |
1063 | if (val < 0) | |
1064 | { | |
1065 | target_terminal_ours_for_output (); | |
53a5351d | 1066 | warning ("Cannot insert catchpoint %d.", b->number); |
c5aa993b JM |
1067 | } |
1068 | else | |
1069 | b->inserted = 1; | |
53a5351d JM |
1070 | |
1071 | if (val) | |
1072 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1073 | } |
1074 | } | |
c906108c | 1075 | |
53a5351d | 1076 | return return_val; |
c906108c SS |
1077 | } |
1078 | ||
1079 | ||
1080 | int | |
1081 | remove_breakpoints () | |
1082 | { | |
1083 | register struct breakpoint *b; | |
1084 | int val; | |
1085 | ||
1086 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
1087 | { |
1088 | if (b->inserted) | |
1089 | { | |
1090 | val = remove_breakpoint (b, mark_uninserted); | |
1091 | if (val != 0) | |
1092 | return val; | |
1093 | } | |
1094 | } | |
c906108c SS |
1095 | return 0; |
1096 | } | |
1097 | ||
692590c1 | 1098 | int |
80ce1ecb | 1099 | remove_hw_watchpoints (void) |
692590c1 MS |
1100 | { |
1101 | register struct breakpoint *b; | |
1102 | int val; | |
1103 | ||
1104 | ALL_BREAKPOINTS (b) | |
1105 | { | |
1106 | if (b->inserted | |
1107 | && (b->type == bp_hardware_watchpoint | |
1108 | || b->type == bp_read_watchpoint | |
1109 | || b->type == bp_access_watchpoint)) | |
1110 | { | |
1111 | val = remove_breakpoint (b, mark_uninserted); | |
1112 | if (val != 0) | |
1113 | return val; | |
1114 | } | |
1115 | } | |
1116 | return 0; | |
1117 | } | |
1118 | ||
c906108c SS |
1119 | int |
1120 | reattach_breakpoints (pid) | |
c5aa993b | 1121 | int pid; |
c906108c SS |
1122 | { |
1123 | register struct breakpoint *b; | |
1124 | int val; | |
c5aa993b | 1125 | int saved_inferior_pid = inferior_pid; |
c906108c | 1126 | |
53a5351d JM |
1127 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1128 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 1129 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1130 | { |
1131 | if (b->inserted) | |
1132 | { | |
1133 | remove_breakpoint (b, mark_inserted); | |
1134 | if (b->type == bp_hardware_breakpoint) | |
1135 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
1136 | else | |
1137 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
1138 | if (val != 0) | |
1139 | { | |
1140 | inferior_pid = saved_inferior_pid; | |
1141 | return val; | |
1142 | } | |
1143 | } | |
1144 | } | |
c906108c SS |
1145 | inferior_pid = saved_inferior_pid; |
1146 | return 0; | |
1147 | } | |
1148 | ||
1149 | void | |
1150 | update_breakpoints_after_exec () | |
1151 | { | |
c5aa993b JM |
1152 | struct breakpoint *b; |
1153 | struct breakpoint *temp; | |
c906108c SS |
1154 | |
1155 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1156 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1157 | shadow is NOT valid after an exec()! */ | |
1158 | mark_breakpoints_out (); | |
1159 | ||
1160 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1161 | { |
1162 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1163 | if (b->type == bp_shlib_event) | |
1164 | { | |
1165 | delete_breakpoint (b); | |
1166 | continue; | |
1167 | } | |
c906108c | 1168 | |
c4093a6a JM |
1169 | /* Thread event breakpoints must be set anew after an exec(). */ |
1170 | if (b->type == bp_thread_event) | |
1171 | { | |
1172 | delete_breakpoint (b); | |
1173 | continue; | |
1174 | } | |
1175 | ||
c5aa993b JM |
1176 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1177 | if (b->type == bp_step_resume) | |
1178 | { | |
1179 | delete_breakpoint (b); | |
1180 | continue; | |
1181 | } | |
1182 | ||
1183 | /* Ditto the sigtramp handler breakpoints. */ | |
1184 | if (b->type == bp_through_sigtramp) | |
1185 | { | |
1186 | delete_breakpoint (b); | |
1187 | continue; | |
1188 | } | |
1189 | ||
1190 | /* Ditto the exception-handling catchpoints. */ | |
1191 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1192 | { | |
1193 | delete_breakpoint (b); | |
1194 | continue; | |
1195 | } | |
1196 | ||
1197 | /* Don't delete an exec catchpoint, because else the inferior | |
1198 | won't stop when it ought! | |
1199 | ||
1200 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1201 | on this target, we may not be able to stop when the vfork is |
1202 | seen, but only when the subsequent exec is seen. (And because | |
1203 | deleting fork catchpoints here but not vfork catchpoints will | |
1204 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1205 | |
1206 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1207 | target address field, if any, is sufficient to have it be reset | |
1208 | automagically. Certainly on HP-UX that's true. */ | |
1209 | if ((b->type == bp_catch_exec) || | |
1210 | (b->type == bp_catch_vfork) || | |
1211 | (b->type == bp_catch_fork)) | |
1212 | { | |
1213 | b->address = (CORE_ADDR) NULL; | |
1214 | continue; | |
1215 | } | |
1216 | ||
1217 | /* bp_finish is a special case. The only way we ought to be able | |
1218 | to see one of these when an exec() has happened, is if the user | |
1219 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1220 | carries them to the call-site of the current callee, by setting | |
1221 | a temporary bp there and resuming. But in this case, the finish | |
1222 | will carry them entirely through the vfork & exec. | |
1223 | ||
1224 | We don't want to allow a bp_finish to remain inserted now. But | |
1225 | we can't safely delete it, 'cause finish_command has a handle to | |
1226 | the bp on a bpstat, and will later want to delete it. There's a | |
1227 | chance (and I've seen it happen) that if we delete the bp_finish | |
1228 | here, that its storage will get reused by the time finish_command | |
1229 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1230 | We really must allow finish_command to delete a bp_finish. | |
1231 | ||
53a5351d JM |
1232 | In the absense of a general solution for the "how do we know |
1233 | it's safe to delete something others may have handles to?" | |
1234 | problem, what we'll do here is just uninsert the bp_finish, and | |
1235 | let finish_command delete it. | |
1236 | ||
1237 | (We know the bp_finish is "doomed" in the sense that it's | |
1238 | momentary, and will be deleted as soon as finish_command sees | |
1239 | the inferior stopped. So it doesn't matter that the bp's | |
1240 | address is probably bogus in the new a.out, unlike e.g., the | |
1241 | solib breakpoints.) */ | |
c5aa993b | 1242 | |
c5aa993b JM |
1243 | if (b->type == bp_finish) |
1244 | { | |
1245 | continue; | |
1246 | } | |
1247 | ||
1248 | /* Without a symbolic address, we have little hope of the | |
1249 | pre-exec() address meaning the same thing in the post-exec() | |
1250 | a.out. */ | |
1251 | if (b->addr_string == NULL) | |
1252 | { | |
1253 | delete_breakpoint (b); | |
1254 | continue; | |
1255 | } | |
1256 | ||
1257 | /* If this breakpoint has survived the above battery of checks, then | |
1258 | it must have a symbolic address. Be sure that it gets reevaluated | |
1259 | to a target address, rather than reusing the old evaluation. */ | |
1260 | b->address = (CORE_ADDR) NULL; | |
1261 | } | |
c906108c SS |
1262 | } |
1263 | ||
1264 | int | |
1265 | detach_breakpoints (pid) | |
c5aa993b | 1266 | int pid; |
c906108c SS |
1267 | { |
1268 | register struct breakpoint *b; | |
1269 | int val; | |
c5aa993b JM |
1270 | int saved_inferior_pid = inferior_pid; |
1271 | ||
c906108c SS |
1272 | if (pid == inferior_pid) |
1273 | error ("Cannot detach breakpoints of inferior_pid"); | |
c5aa993b | 1274 | |
53a5351d JM |
1275 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1276 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 1277 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1278 | { |
1279 | if (b->inserted) | |
1280 | { | |
1281 | val = remove_breakpoint (b, mark_inserted); | |
1282 | if (val != 0) | |
1283 | { | |
1284 | inferior_pid = saved_inferior_pid; | |
1285 | return val; | |
1286 | } | |
1287 | } | |
1288 | } | |
c906108c SS |
1289 | inferior_pid = saved_inferior_pid; |
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | static int | |
1294 | remove_breakpoint (b, is) | |
1295 | struct breakpoint *b; | |
c5aa993b | 1296 | insertion_state_t is; |
c906108c SS |
1297 | { |
1298 | int val; | |
c5aa993b | 1299 | |
c2c6d25f JM |
1300 | if (b->enable == permanent) |
1301 | /* Permanent breakpoints cannot be inserted or removed. */ | |
1302 | return 0; | |
1303 | ||
c906108c | 1304 | if (b->type == bp_none) |
53a5351d JM |
1305 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
1306 | b->number); | |
c906108c SS |
1307 | |
1308 | if (b->type != bp_watchpoint | |
1309 | && b->type != bp_hardware_watchpoint | |
1310 | && b->type != bp_read_watchpoint | |
1311 | && b->type != bp_access_watchpoint | |
1312 | && b->type != bp_catch_fork | |
1313 | && b->type != bp_catch_vfork | |
1314 | && b->type != bp_catch_exec | |
1315 | && b->type != bp_catch_catch | |
1316 | && b->type != bp_catch_throw) | |
c906108c SS |
1317 | { |
1318 | if (b->type == bp_hardware_breakpoint) | |
c5aa993b | 1319 | val = target_remove_hw_breakpoint (b->address, b->shadow_contents); |
c906108c SS |
1320 | else |
1321 | { | |
1322 | /* Check to see if breakpoint is in an overlay section; | |
1323 | if so, we should remove the breakpoint at the LMA address. | |
1324 | If that is not equal to the raw address, then we should | |
1325 | presumable remove the breakpoint there as well. */ | |
c5aa993b | 1326 | if (overlay_debugging && b->section && |
c906108c SS |
1327 | section_is_overlay (b->section)) |
1328 | { | |
1329 | CORE_ADDR addr; | |
1330 | ||
1331 | addr = overlay_unmapped_address (b->address, b->section); | |
1332 | val = target_remove_breakpoint (addr, b->shadow_contents); | |
1333 | /* This would be the time to check val, to see if the | |
c5aa993b JM |
1334 | shadow breakpoint write to the load address succeeded. |
1335 | However, this might be an ordinary occurrance, eg. if | |
1336 | the unmapped overlay is in ROM. */ | |
1337 | val = 0; /* in case unmapped address failed */ | |
c906108c | 1338 | if (section_is_mapped (b->section)) |
c5aa993b | 1339 | val = target_remove_breakpoint (b->address, |
c906108c SS |
1340 | b->shadow_contents); |
1341 | } | |
c5aa993b JM |
1342 | else /* ordinary (non-overlay) address */ |
1343 | val = target_remove_breakpoint (b->address, b->shadow_contents); | |
c906108c SS |
1344 | } |
1345 | if (val) | |
1346 | return val; | |
1347 | b->inserted = (is == mark_inserted); | |
1348 | } | |
1349 | else if ((b->type == bp_hardware_watchpoint || | |
c5aa993b JM |
1350 | b->type == bp_read_watchpoint || |
1351 | b->type == bp_access_watchpoint) | |
c906108c | 1352 | && b->enable == enabled |
c5aa993b | 1353 | && !b->duplicate) |
c906108c SS |
1354 | { |
1355 | value_ptr v, n; | |
c5aa993b | 1356 | |
c906108c SS |
1357 | b->inserted = (is == mark_inserted); |
1358 | /* Walk down the saved value chain. */ | |
1359 | for (v = b->val_chain; v; v = v->next) | |
1360 | { | |
1361 | /* For each memory reference remove the watchpoint | |
1362 | at that address. */ | |
5c44784c JM |
1363 | if (VALUE_LVAL (v) == lval_memory |
1364 | && ! VALUE_LAZY (v)) | |
c906108c | 1365 | { |
2e70b7b9 MS |
1366 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1367 | ||
1368 | if (v == b->val_chain | |
1369 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
1370 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1371 | { | |
1372 | CORE_ADDR addr; | |
1373 | int len, type; | |
1374 | ||
1375 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1376 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1377 | type = hw_write; | |
1378 | if (b->type == bp_read_watchpoint) | |
1379 | type = hw_read; | |
1380 | else if (b->type == bp_access_watchpoint) | |
1381 | type = hw_access; | |
1382 | ||
1383 | val = target_remove_watchpoint (addr, len, type); | |
1384 | if (val == -1) | |
1385 | b->inserted = 1; | |
1386 | val = 0; | |
1387 | } | |
c906108c SS |
1388 | } |
1389 | } | |
1390 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
1391 | if ((is == mark_uninserted) && (b->inserted)) | |
53a5351d | 1392 | warning ("Could not remove hardware watchpoint %d.", |
c906108c | 1393 | b->number); |
c5aa993b | 1394 | |
c906108c | 1395 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1396 | the next time the watchpoint is inserted. */ |
c906108c SS |
1397 | for (v = b->val_chain; v; v = n) |
1398 | { | |
1399 | n = v->next; | |
1400 | value_free (v); | |
1401 | } | |
1402 | b->val_chain = NULL; | |
1403 | } | |
1404 | else if ((b->type == bp_catch_fork || | |
c5aa993b JM |
1405 | b->type == bp_catch_vfork || |
1406 | b->type == bp_catch_exec) | |
c906108c | 1407 | && b->enable == enabled |
c5aa993b | 1408 | && !b->duplicate) |
c906108c SS |
1409 | { |
1410 | val = -1; | |
1411 | switch (b->type) | |
c5aa993b JM |
1412 | { |
1413 | case bp_catch_fork: | |
1414 | val = target_remove_fork_catchpoint (inferior_pid); | |
1415 | break; | |
1416 | case bp_catch_vfork: | |
1417 | val = target_remove_vfork_catchpoint (inferior_pid); | |
1418 | break; | |
1419 | case bp_catch_exec: | |
1420 | val = target_remove_exec_catchpoint (inferior_pid); | |
1421 | break; | |
ac9a91a7 | 1422 | default: |
53a5351d | 1423 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1424 | break; |
c5aa993b | 1425 | } |
c906108c SS |
1426 | if (val) |
1427 | return val; | |
1428 | b->inserted = (is == mark_inserted); | |
1429 | } | |
1430 | else if ((b->type == bp_catch_catch || | |
c5aa993b JM |
1431 | b->type == bp_catch_throw) |
1432 | && b->enable == enabled | |
1433 | && !b->duplicate) | |
c906108c SS |
1434 | { |
1435 | ||
c5aa993b | 1436 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1437 | if (val) |
c5aa993b | 1438 | return val; |
c906108c SS |
1439 | b->inserted = (is == mark_inserted); |
1440 | } | |
1441 | else if (ep_is_exception_catchpoint (b) | |
c5aa993b JM |
1442 | && b->inserted /* sometimes previous insert doesn't happen */ |
1443 | && b->enable == enabled | |
1444 | && !b->duplicate) | |
c906108c SS |
1445 | { |
1446 | ||
c5aa993b | 1447 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1448 | if (val) |
c5aa993b JM |
1449 | return val; |
1450 | ||
c906108c SS |
1451 | b->inserted = (is == mark_inserted); |
1452 | } | |
1453 | ||
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | /* Clear the "inserted" flag in all breakpoints. */ | |
1458 | ||
1459 | void | |
1460 | mark_breakpoints_out () | |
1461 | { | |
1462 | register struct breakpoint *b; | |
1463 | ||
1464 | ALL_BREAKPOINTS (b) | |
1465 | b->inserted = 0; | |
1466 | } | |
1467 | ||
53a5351d JM |
1468 | /* Clear the "inserted" flag in all breakpoints and delete any |
1469 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1470 | |
1471 | Plus other such housekeeping that has to be done for breakpoints | |
1472 | between runs. | |
1473 | ||
53a5351d JM |
1474 | Note: this function gets called at the end of a run (by |
1475 | generic_mourn_inferior) and when a run begins (by | |
1476 | init_wait_for_inferior). */ | |
c906108c SS |
1477 | |
1478 | ||
1479 | ||
1480 | void | |
1481 | breakpoint_init_inferior (context) | |
c5aa993b | 1482 | enum inf_context context; |
c906108c SS |
1483 | { |
1484 | register struct breakpoint *b, *temp; | |
1485 | static int warning_needed = 0; | |
1486 | ||
1487 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1488 | { |
1489 | b->inserted = 0; | |
c906108c | 1490 | |
c5aa993b JM |
1491 | switch (b->type) |
1492 | { | |
1493 | case bp_call_dummy: | |
1494 | case bp_watchpoint_scope: | |
c906108c | 1495 | |
c5aa993b JM |
1496 | /* If the call dummy breakpoint is at the entry point it will |
1497 | cause problems when the inferior is rerun, so we better | |
1498 | get rid of it. | |
c906108c | 1499 | |
c5aa993b JM |
1500 | Also get rid of scope breakpoints. */ |
1501 | delete_breakpoint (b); | |
1502 | break; | |
c906108c | 1503 | |
c5aa993b JM |
1504 | case bp_watchpoint: |
1505 | case bp_hardware_watchpoint: | |
1506 | case bp_read_watchpoint: | |
1507 | case bp_access_watchpoint: | |
c906108c | 1508 | |
c5aa993b JM |
1509 | /* Likewise for watchpoints on local expressions. */ |
1510 | if (b->exp_valid_block != NULL) | |
1511 | delete_breakpoint (b); | |
1512 | break; | |
1513 | default: | |
1514 | /* Likewise for exception catchpoints in dynamic-linked | |
1515 | executables where required */ | |
1516 | if (ep_is_exception_catchpoint (b) && | |
1517 | exception_catchpoints_are_fragile) | |
1518 | { | |
1519 | warning_needed = 1; | |
c906108c | 1520 | delete_breakpoint (b); |
c5aa993b JM |
1521 | } |
1522 | break; | |
1523 | } | |
1524 | } | |
c906108c SS |
1525 | |
1526 | if (exception_catchpoints_are_fragile) | |
1527 | exception_support_initialized = 0; | |
1528 | ||
c5aa993b | 1529 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1530 | if (warning_needed && (context != inf_exited)) |
1531 | { | |
53a5351d JM |
1532 | warning ("Exception catchpoints from last run were deleted."); |
1533 | warning ("You must reinsert them explicitly."); | |
c906108c | 1534 | warning_needed = 0; |
c5aa993b | 1535 | } |
c906108c SS |
1536 | } |
1537 | ||
c2c6d25f JM |
1538 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1539 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1540 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1541 | permanent breakpoint. | |
1542 | - When continuing from a location with an ordinary breakpoint, we | |
1543 | actually single step once before calling insert_breakpoints. | |
1544 | - When continuing from a localion with a permanent breakpoint, we | |
1545 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1546 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1547 | |
c2c6d25f | 1548 | enum breakpoint_here |
c906108c SS |
1549 | breakpoint_here_p (pc) |
1550 | CORE_ADDR pc; | |
1551 | { | |
1552 | register struct breakpoint *b; | |
c2c6d25f | 1553 | int any_breakpoint_here = 0; |
c906108c SS |
1554 | |
1555 | ALL_BREAKPOINTS (b) | |
c2c6d25f JM |
1556 | if ((b->enable == enabled |
1557 | || b->enable == permanent) | |
c906108c | 1558 | && b->address == pc) /* bp is enabled and matches pc */ |
c2c6d25f JM |
1559 | { |
1560 | if (overlay_debugging && | |
1561 | section_is_overlay (b->section) && | |
1562 | !section_is_mapped (b->section)) | |
1563 | continue; /* unmapped overlay -- can't be a match */ | |
1564 | else if (b->enable == permanent) | |
1565 | return permanent_breakpoint_here; | |
1566 | else | |
1567 | any_breakpoint_here = 1; | |
1568 | } | |
c906108c | 1569 | |
c2c6d25f | 1570 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1571 | } |
1572 | ||
c2c6d25f | 1573 | |
53a5351d JM |
1574 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1575 | but it only returns true if there is actually a breakpoint inserted | |
1576 | at PC. */ | |
c906108c SS |
1577 | |
1578 | int | |
1579 | breakpoint_inserted_here_p (pc) | |
1580 | CORE_ADDR pc; | |
1581 | { | |
1582 | register struct breakpoint *b; | |
1583 | ||
1584 | ALL_BREAKPOINTS (b) | |
1585 | if (b->inserted | |
1586 | && b->address == pc) /* bp is inserted and matches pc */ | |
c5aa993b JM |
1587 | { |
1588 | if (overlay_debugging && | |
1589 | section_is_overlay (b->section) && | |
1590 | !section_is_mapped (b->section)) | |
1591 | continue; /* unmapped overlay -- can't be a match */ | |
1592 | else | |
1593 | return 1; | |
1594 | } | |
c906108c SS |
1595 | |
1596 | return 0; | |
1597 | } | |
1598 | ||
53a5351d JM |
1599 | /* Return nonzero if FRAME is a dummy frame. We can't use |
1600 | PC_IN_CALL_DUMMY because figuring out the saved SP would take too | |
1601 | much time, at least using get_saved_register on the 68k. This | |
1602 | means that for this function to work right a port must use the | |
1603 | bp_call_dummy breakpoint. */ | |
c906108c SS |
1604 | |
1605 | int | |
1606 | frame_in_dummy (frame) | |
1607 | struct frame_info *frame; | |
1608 | { | |
c906108c SS |
1609 | struct breakpoint *b; |
1610 | ||
c5aa993b | 1611 | if (!CALL_DUMMY_P) |
7a292a7a SS |
1612 | return 0; |
1613 | ||
1614 | if (USE_GENERIC_DUMMY_FRAMES) | |
1615 | return generic_pc_in_call_dummy (frame->pc, frame->frame, frame->frame); | |
c5aa993b | 1616 | |
c906108c | 1617 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1618 | { |
1619 | if (b->type == bp_call_dummy | |
1620 | && b->frame == frame->frame | |
1621 | /* We need to check the PC as well as the frame on the sparc, | |
1622 | for signals.exp in the testsuite. */ | |
1623 | && (frame->pc | |
1624 | >= (b->address | |
1625 | - SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE)) | |
1626 | && frame->pc <= b->address) | |
1627 | return 1; | |
1628 | } | |
c906108c SS |
1629 | return 0; |
1630 | } | |
1631 | ||
1632 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC | |
1633 | is valid for process/thread PID. */ | |
1634 | ||
1635 | int | |
1636 | breakpoint_thread_match (pc, pid) | |
1637 | CORE_ADDR pc; | |
1638 | int pid; | |
1639 | { | |
1640 | struct breakpoint *b; | |
1641 | int thread; | |
1642 | ||
1643 | thread = pid_to_thread_id (pid); | |
1644 | ||
1645 | ALL_BREAKPOINTS (b) | |
1646 | if (b->enable != disabled | |
1647 | && b->enable != shlib_disabled | |
1648 | && b->enable != call_disabled | |
1649 | && b->address == pc | |
1650 | && (b->thread == -1 || b->thread == thread)) | |
c5aa993b JM |
1651 | { |
1652 | if (overlay_debugging && | |
1653 | section_is_overlay (b->section) && | |
1654 | !section_is_mapped (b->section)) | |
1655 | continue; /* unmapped overlay -- can't be a match */ | |
1656 | else | |
1657 | return 1; | |
1658 | } | |
c906108c SS |
1659 | |
1660 | return 0; | |
1661 | } | |
c906108c | 1662 | \f |
c5aa993b | 1663 | |
c906108c SS |
1664 | /* bpstat stuff. External routines' interfaces are documented |
1665 | in breakpoint.h. */ | |
1666 | ||
1667 | int | |
1668 | ep_is_catchpoint (ep) | |
c5aa993b | 1669 | struct breakpoint *ep; |
c906108c SS |
1670 | { |
1671 | return | |
1672 | (ep->type == bp_catch_load) | |
1673 | || (ep->type == bp_catch_unload) | |
1674 | || (ep->type == bp_catch_fork) | |
1675 | || (ep->type == bp_catch_vfork) | |
1676 | || (ep->type == bp_catch_exec) | |
1677 | || (ep->type == bp_catch_catch) | |
1678 | || (ep->type == bp_catch_throw) | |
1679 | ||
1680 | ||
c5aa993b | 1681 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c SS |
1682 | ; |
1683 | } | |
c5aa993b | 1684 | |
c906108c SS |
1685 | int |
1686 | ep_is_shlib_catchpoint (ep) | |
c5aa993b | 1687 | struct breakpoint *ep; |
c906108c SS |
1688 | { |
1689 | return | |
1690 | (ep->type == bp_catch_load) | |
1691 | || (ep->type == bp_catch_unload) | |
1692 | ; | |
1693 | } | |
1694 | ||
1695 | int | |
1696 | ep_is_exception_catchpoint (ep) | |
c5aa993b | 1697 | struct breakpoint *ep; |
c906108c SS |
1698 | { |
1699 | return | |
1700 | (ep->type == bp_catch_catch) | |
1701 | || (ep->type == bp_catch_throw) | |
1702 | ; | |
1703 | } | |
1704 | ||
1705 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1706 | Also free any storage that is part of a bpstat. */ | |
1707 | ||
1708 | void | |
1709 | bpstat_clear (bsp) | |
1710 | bpstat *bsp; | |
1711 | { | |
1712 | bpstat p; | |
1713 | bpstat q; | |
1714 | ||
1715 | if (bsp == 0) | |
1716 | return; | |
1717 | p = *bsp; | |
1718 | while (p != NULL) | |
1719 | { | |
1720 | q = p->next; | |
1721 | if (p->old_val != NULL) | |
1722 | value_free (p->old_val); | |
c5aa993b | 1723 | free ((PTR) p); |
c906108c SS |
1724 | p = q; |
1725 | } | |
1726 | *bsp = NULL; | |
1727 | } | |
1728 | ||
1729 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1730 | is part of the bpstat is copied as well. */ | |
1731 | ||
1732 | bpstat | |
1733 | bpstat_copy (bs) | |
1734 | bpstat bs; | |
1735 | { | |
1736 | bpstat p = NULL; | |
1737 | bpstat tmp; | |
1738 | bpstat retval = NULL; | |
1739 | ||
1740 | if (bs == NULL) | |
1741 | return bs; | |
1742 | ||
1743 | for (; bs != NULL; bs = bs->next) | |
1744 | { | |
1745 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1746 | memcpy (tmp, bs, sizeof (*tmp)); | |
1747 | if (p == NULL) | |
1748 | /* This is the first thing in the chain. */ | |
1749 | retval = tmp; | |
1750 | else | |
1751 | p->next = tmp; | |
1752 | p = tmp; | |
1753 | } | |
1754 | p->next = NULL; | |
1755 | return retval; | |
1756 | } | |
1757 | ||
1758 | /* Find the bpstat associated with this breakpoint */ | |
1759 | ||
1760 | bpstat | |
c5aa993b | 1761 | bpstat_find_breakpoint (bsp, breakpoint) |
c906108c SS |
1762 | bpstat bsp; |
1763 | struct breakpoint *breakpoint; | |
1764 | { | |
c5aa993b JM |
1765 | if (bsp == NULL) |
1766 | return NULL; | |
c906108c | 1767 | |
c5aa993b JM |
1768 | for (; bsp != NULL; bsp = bsp->next) |
1769 | { | |
1770 | if (bsp->breakpoint_at == breakpoint) | |
1771 | return bsp; | |
1772 | } | |
c906108c SS |
1773 | return NULL; |
1774 | } | |
1775 | ||
1776 | /* Find a step_resume breakpoint associated with this bpstat. | |
1777 | (If there are multiple step_resume bp's on the list, this function | |
1778 | will arbitrarily pick one.) | |
1779 | ||
1780 | It is an error to use this function if BPSTAT doesn't contain a | |
1781 | step_resume breakpoint. | |
1782 | ||
1783 | See wait_for_inferior's use of this function. */ | |
1784 | struct breakpoint * | |
1785 | bpstat_find_step_resume_breakpoint (bsp) | |
c5aa993b | 1786 | bpstat bsp; |
c906108c SS |
1787 | { |
1788 | if (bsp == NULL) | |
1789 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1790 | ||
1791 | for (; bsp != NULL; bsp = bsp->next) | |
1792 | { | |
1793 | if ((bsp->breakpoint_at != NULL) && | |
c5aa993b JM |
1794 | (bsp->breakpoint_at->type == bp_step_resume)) |
1795 | return bsp->breakpoint_at; | |
c906108c SS |
1796 | } |
1797 | ||
1798 | error ("Internal error (no step_resume breakpoint found)"); | |
1799 | } | |
1800 | ||
1801 | ||
1802 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1803 | at. *BSP upon return is a bpstat which points to the remaining | |
1804 | breakpoints stopped at (but which is not guaranteed to be good for | |
1805 | anything but further calls to bpstat_num). | |
1806 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1807 | ||
1808 | int | |
1809 | bpstat_num (bsp) | |
1810 | bpstat *bsp; | |
1811 | { | |
1812 | struct breakpoint *b; | |
1813 | ||
1814 | if ((*bsp) == NULL) | |
1815 | return 0; /* No more breakpoint values */ | |
1816 | else | |
1817 | { | |
1818 | b = (*bsp)->breakpoint_at; | |
1819 | *bsp = (*bsp)->next; | |
1820 | if (b == NULL) | |
1821 | return -1; /* breakpoint that's been deleted since */ | |
1822 | else | |
c5aa993b | 1823 | return b->number; /* We have its number */ |
c906108c SS |
1824 | } |
1825 | } | |
1826 | ||
1827 | /* Modify BS so that the actions will not be performed. */ | |
1828 | ||
1829 | void | |
1830 | bpstat_clear_actions (bs) | |
1831 | bpstat bs; | |
1832 | { | |
1833 | for (; bs != NULL; bs = bs->next) | |
1834 | { | |
1835 | bs->commands = NULL; | |
1836 | if (bs->old_val != NULL) | |
1837 | { | |
1838 | value_free (bs->old_val); | |
1839 | bs->old_val = NULL; | |
1840 | } | |
1841 | } | |
1842 | } | |
1843 | ||
1844 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1845 | /* ARGSUSED */ | |
1846 | static void | |
1847 | cleanup_executing_breakpoints (ignore) | |
1848 | PTR ignore; | |
1849 | { | |
1850 | executing_breakpoint_commands = 0; | |
1851 | } | |
1852 | ||
1853 | /* Execute all the commands associated with all the breakpoints at this | |
1854 | location. Any of these commands could cause the process to proceed | |
1855 | beyond this point, etc. We look out for such changes by checking | |
1856 | the global "breakpoint_proceeded" after each command. */ | |
1857 | ||
1858 | void | |
1859 | bpstat_do_actions (bsp) | |
1860 | bpstat *bsp; | |
1861 | { | |
1862 | bpstat bs; | |
1863 | struct cleanup *old_chain; | |
1864 | struct command_line *cmd; | |
1865 | ||
1866 | /* Avoid endless recursion if a `source' command is contained | |
1867 | in bs->commands. */ | |
1868 | if (executing_breakpoint_commands) | |
1869 | return; | |
1870 | ||
1871 | executing_breakpoint_commands = 1; | |
1872 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1873 | ||
1874 | top: | |
1875 | /* Note that (as of this writing), our callers all appear to | |
1876 | be passing us the address of global stop_bpstat. And, if | |
1877 | our calls to execute_control_command cause the inferior to | |
1878 | proceed, that global (and hence, *bsp) will change. | |
1879 | ||
1880 | We must be careful to not touch *bsp unless the inferior | |
1881 | has not proceeded. */ | |
1882 | ||
1883 | /* This pointer will iterate over the list of bpstat's. */ | |
1884 | bs = *bsp; | |
1885 | ||
1886 | breakpoint_proceeded = 0; | |
1887 | for (; bs != NULL; bs = bs->next) | |
1888 | { | |
1889 | cmd = bs->commands; | |
1890 | while (cmd != NULL) | |
1891 | { | |
1892 | execute_control_command (cmd); | |
1893 | ||
1894 | if (breakpoint_proceeded) | |
1895 | break; | |
1896 | else | |
1897 | cmd = cmd->next; | |
1898 | } | |
1899 | if (breakpoint_proceeded) | |
1900 | /* The inferior is proceeded by the command; bomb out now. | |
1901 | The bpstat chain has been blown away by wait_for_inferior. | |
1902 | But since execution has stopped again, there is a new bpstat | |
1903 | to look at, so start over. */ | |
1904 | goto top; | |
1905 | else | |
1906 | bs->commands = NULL; | |
1907 | } | |
1908 | ||
1909 | executing_breakpoint_commands = 0; | |
1910 | discard_cleanups (old_chain); | |
1911 | } | |
1912 | ||
e514a9d6 | 1913 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 1914 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
1915 | by having it set different print_it values. |
1916 | ||
1917 | Current scheme: When we stop, bpstat_print() is called. It loops | |
1918 | through the bpstat list of things causing this stop, calling the | |
1919 | print_bp_stop_message function on each one. The behavior of the | |
1920 | print_bp_stop_message function depends on the print_it field of | |
1921 | bpstat. If such field so indicates, call this function here. | |
1922 | ||
1923 | Return values from this routine (ultimately used by bpstat_print() | |
1924 | and normal_stop() to decide what to do): | |
1925 | PRINT_NOTHING: Means we already printed all we needed to print, | |
1926 | don't print anything else. | |
1927 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
1928 | that something to be followed by a location. | |
1929 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
1930 | that something to be followed by a location. | |
1931 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
1932 | analysis. */ | |
c906108c | 1933 | |
917317f4 | 1934 | static enum print_stop_action |
e514a9d6 | 1935 | print_it_typical (bs) |
c906108c SS |
1936 | bpstat bs; |
1937 | { | |
8b93c638 JM |
1938 | #ifdef UI_OUT |
1939 | struct cleanup *old_chain; | |
1940 | struct ui_stream *stb; | |
1941 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 1942 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 1943 | #endif /* UI_OUT */ |
c906108c SS |
1944 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
1945 | which has since been deleted. */ | |
e514a9d6 | 1946 | if (bs->breakpoint_at == NULL) |
917317f4 | 1947 | return PRINT_UNKNOWN; |
c906108c | 1948 | |
e514a9d6 | 1949 | switch (bs->breakpoint_at->type) |
c906108c | 1950 | { |
e514a9d6 JM |
1951 | case bp_breakpoint: |
1952 | case bp_hardware_breakpoint: | |
8b93c638 JM |
1953 | #ifdef UI_OUT |
1954 | annotate_breakpoint (bs->breakpoint_at->number); | |
1955 | ui_out_text (uiout, "\nBreakpoint "); | |
fb40c209 AC |
1956 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
1957 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); | |
8b93c638 JM |
1958 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
1959 | ui_out_text (uiout, ", "); | |
1960 | return PRINT_SRC_AND_LOC; | |
1961 | #else | |
e514a9d6 JM |
1962 | /* I think the user probably only wants to see one breakpoint |
1963 | number, not all of them. */ | |
1964 | annotate_breakpoint (bs->breakpoint_at->number); | |
1965 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); | |
917317f4 | 1966 | return PRINT_SRC_AND_LOC; |
8b93c638 | 1967 | #endif |
e514a9d6 JM |
1968 | break; |
1969 | ||
1970 | case bp_shlib_event: | |
917317f4 JM |
1971 | /* Did we stop because the user set the stop_on_solib_events |
1972 | variable? (If so, we report this as a generic, "Stopped due | |
1973 | to shlib event" message.) */ | |
e514a9d6 JM |
1974 | printf_filtered ("Stopped due to shared library event\n"); |
1975 | return PRINT_NOTHING; | |
1976 | break; | |
1977 | ||
c4093a6a JM |
1978 | case bp_thread_event: |
1979 | /* Not sure how we will get here. | |
1980 | GDB should not stop for these breakpoints. */ | |
1981 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
1982 | return PRINT_NOTHING; | |
1983 | break; | |
1984 | ||
e514a9d6 | 1985 | case bp_catch_load: |
c906108c SS |
1986 | annotate_catchpoint (bs->breakpoint_at->number); |
1987 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
1988 | printf_filtered ("loaded"); |
1989 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1990 | return PRINT_SRC_AND_LOC; | |
1991 | break; | |
1992 | ||
1993 | case bp_catch_unload: | |
1994 | annotate_catchpoint (bs->breakpoint_at->number); | |
1995 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1996 | printf_filtered ("unloaded"); | |
1997 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1998 | return PRINT_SRC_AND_LOC; | |
1999 | break; | |
2000 | ||
2001 | case bp_catch_fork: | |
2002 | annotate_catchpoint (bs->breakpoint_at->number); | |
2003 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2004 | printf_filtered ("forked"); | |
53a5351d JM |
2005 | printf_filtered (" process %d), ", |
2006 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2007 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2008 | break; |
2009 | ||
2010 | case bp_catch_vfork: | |
2011 | annotate_catchpoint (bs->breakpoint_at->number); | |
2012 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2013 | printf_filtered ("vforked"); | |
2014 | printf_filtered (" process %d), ", | |
2015 | bs->breakpoint_at->forked_inferior_pid); | |
2016 | return PRINT_SRC_AND_LOC; | |
2017 | break; | |
2018 | ||
2019 | case bp_catch_exec: | |
c906108c SS |
2020 | annotate_catchpoint (bs->breakpoint_at->number); |
2021 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2022 | bs->breakpoint_at->number, |
2023 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2024 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2025 | break; |
2026 | ||
2027 | case bp_catch_catch: | |
53a5351d JM |
2028 | if (current_exception_event && |
2029 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2030 | { |
2031 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2032 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2033 | bs->breakpoint_at->number); | |
c5aa993b JM |
2034 | printf_filtered ("throw location "); |
2035 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2036 | printf_filtered ("%s:%d", | |
2037 | CURRENT_EXCEPTION_THROW_FILE, | |
2038 | CURRENT_EXCEPTION_THROW_LINE); | |
2039 | else | |
2040 | printf_filtered ("unknown"); | |
2041 | ||
2042 | printf_filtered (", catch location "); | |
2043 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2044 | printf_filtered ("%s:%d", | |
2045 | CURRENT_EXCEPTION_CATCH_FILE, | |
2046 | CURRENT_EXCEPTION_CATCH_LINE); | |
2047 | else | |
2048 | printf_filtered ("unknown"); | |
2049 | ||
2050 | printf_filtered ("\n"); | |
e514a9d6 JM |
2051 | /* don't bother to print location frame info */ |
2052 | return PRINT_SRC_ONLY; | |
c5aa993b | 2053 | } |
c906108c | 2054 | else |
c5aa993b | 2055 | { |
e514a9d6 JM |
2056 | /* really throw, some other bpstat will handle it */ |
2057 | return PRINT_UNKNOWN; | |
c5aa993b | 2058 | } |
e514a9d6 JM |
2059 | break; |
2060 | ||
2061 | case bp_catch_throw: | |
53a5351d JM |
2062 | if (current_exception_event && |
2063 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2064 | { |
2065 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2066 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2067 | bs->breakpoint_at->number); | |
c5aa993b JM |
2068 | printf_filtered ("throw location "); |
2069 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2070 | printf_filtered ("%s:%d", | |
2071 | CURRENT_EXCEPTION_THROW_FILE, | |
2072 | CURRENT_EXCEPTION_THROW_LINE); | |
2073 | else | |
2074 | printf_filtered ("unknown"); | |
2075 | ||
2076 | printf_filtered (", catch location "); | |
2077 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2078 | printf_filtered ("%s:%d", | |
2079 | CURRENT_EXCEPTION_CATCH_FILE, | |
2080 | CURRENT_EXCEPTION_CATCH_LINE); | |
2081 | else | |
2082 | printf_filtered ("unknown"); | |
2083 | ||
2084 | printf_filtered ("\n"); | |
e514a9d6 JM |
2085 | /* don't bother to print location frame info */ |
2086 | return PRINT_SRC_ONLY; | |
c5aa993b | 2087 | } |
c906108c | 2088 | else |
c5aa993b | 2089 | { |
e514a9d6 JM |
2090 | /* really catch, some other bpstat will handle it */ |
2091 | return PRINT_UNKNOWN; | |
c5aa993b | 2092 | } |
e514a9d6 | 2093 | break; |
c906108c | 2094 | |
e514a9d6 JM |
2095 | case bp_watchpoint: |
2096 | case bp_hardware_watchpoint: | |
2097 | if (bs->old_val != NULL) | |
2098 | { | |
2099 | annotate_watchpoint (bs->breakpoint_at->number); | |
8b93c638 | 2100 | #ifdef UI_OUT |
fb40c209 AC |
2101 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2102 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); | |
8b93c638 JM |
2103 | mention (bs->breakpoint_at); |
2104 | ui_out_list_begin (uiout, "value"); | |
2105 | ui_out_text (uiout, "\nOld value = "); | |
2106 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2107 | ui_out_field_stream (uiout, "old", stb); | |
2108 | ui_out_text (uiout, "\nNew value = "); | |
2109 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2110 | ui_out_field_stream (uiout, "new", stb); | |
2111 | ui_out_list_end (uiout); | |
2112 | ui_out_text (uiout, "\n"); | |
2113 | #else | |
e514a9d6 JM |
2114 | mention (bs->breakpoint_at); |
2115 | printf_filtered ("\nOld value = "); | |
2116 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2117 | printf_filtered ("\nNew value = "); | |
2118 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
2119 | Val_pretty_default); | |
2120 | printf_filtered ("\n"); | |
8b93c638 | 2121 | #endif |
e514a9d6 JM |
2122 | value_free (bs->old_val); |
2123 | bs->old_val = NULL; | |
2124 | } | |
2125 | /* More than one watchpoint may have been triggered. */ | |
2126 | return PRINT_UNKNOWN; | |
2127 | break; | |
2128 | ||
2129 | case bp_read_watchpoint: | |
8b93c638 | 2130 | #ifdef UI_OUT |
fb40c209 AC |
2131 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2132 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); | |
8b93c638 JM |
2133 | mention (bs->breakpoint_at); |
2134 | ui_out_list_begin (uiout, "value"); | |
2135 | ui_out_text (uiout, "\nValue = "); | |
2136 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2137 | ui_out_field_stream (uiout, "value", stb); | |
2138 | ui_out_list_end (uiout); | |
2139 | ui_out_text (uiout, "\n"); | |
2140 | #else | |
c906108c | 2141 | mention (bs->breakpoint_at); |
e514a9d6 | 2142 | printf_filtered ("\nValue = "); |
c906108c SS |
2143 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
2144 | Val_pretty_default); | |
2145 | printf_filtered ("\n"); | |
8b93c638 | 2146 | #endif |
917317f4 | 2147 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2148 | break; |
2149 | ||
2150 | case bp_access_watchpoint: | |
8b93c638 JM |
2151 | #ifdef UI_OUT |
2152 | if (bs->old_val != NULL) | |
2153 | { | |
2154 | annotate_watchpoint (bs->breakpoint_at->number); | |
fb40c209 AC |
2155 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2156 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); | |
8b93c638 JM |
2157 | mention (bs->breakpoint_at); |
2158 | ui_out_list_begin (uiout, "value"); | |
2159 | ui_out_text (uiout, "\nOld value = "); | |
2160 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2161 | ui_out_field_stream (uiout, "old", stb); | |
2162 | value_free (bs->old_val); | |
2163 | bs->old_val = NULL; | |
2164 | ui_out_text (uiout, "\nNew value = "); | |
2165 | } | |
2166 | else | |
2167 | { | |
2168 | mention (bs->breakpoint_at); | |
fb40c209 AC |
2169 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2170 | ui_out_list_begin (uiout, "value"); | |
8b93c638 JM |
2171 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
2172 | ui_out_text (uiout, "\nValue = "); | |
2173 | } | |
2174 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2175 | ui_out_field_stream (uiout, "new", stb); | |
2176 | ui_out_list_end (uiout); | |
2177 | ui_out_text (uiout, "\n"); | |
2178 | #else | |
e514a9d6 JM |
2179 | if (bs->old_val != NULL) |
2180 | { | |
2181 | annotate_watchpoint (bs->breakpoint_at->number); | |
2182 | mention (bs->breakpoint_at); | |
2183 | printf_filtered ("\nOld value = "); | |
2184 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2185 | value_free (bs->old_val); | |
2186 | bs->old_val = NULL; | |
2187 | printf_filtered ("\nNew value = "); | |
2188 | } | |
2189 | else | |
2190 | { | |
2191 | mention (bs->breakpoint_at); | |
2192 | printf_filtered ("\nValue = "); | |
2193 | } | |
c906108c | 2194 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
c5aa993b | 2195 | Val_pretty_default); |
c906108c | 2196 | printf_filtered ("\n"); |
8b93c638 | 2197 | #endif |
917317f4 | 2198 | return PRINT_UNKNOWN; |
e514a9d6 | 2199 | break; |
4ce44c66 | 2200 | |
e514a9d6 JM |
2201 | /* Fall through, we don't deal with these types of breakpoints |
2202 | here. */ | |
2203 | ||
11cf8741 | 2204 | case bp_finish: |
fb40c209 AC |
2205 | #ifdef UI_OUT |
2206 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2207 | ui_out_field_string (uiout, "reason", "function-finished"); | |
2208 | #endif | |
8b93c638 JM |
2209 | return PRINT_UNKNOWN; |
2210 | break; | |
2211 | ||
e514a9d6 | 2212 | case bp_until: |
fb40c209 AC |
2213 | #ifdef UI_OUT |
2214 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2215 | ui_out_field_string (uiout, "reason", "location-reached"); | |
2216 | #endif | |
8b93c638 JM |
2217 | return PRINT_UNKNOWN; |
2218 | break; | |
2219 | ||
c2d11a7d | 2220 | case bp_none: |
e514a9d6 JM |
2221 | case bp_longjmp: |
2222 | case bp_longjmp_resume: | |
2223 | case bp_step_resume: | |
2224 | case bp_through_sigtramp: | |
2225 | case bp_watchpoint_scope: | |
2226 | case bp_call_dummy: | |
2227 | default: | |
2228 | return PRINT_UNKNOWN; | |
2229 | } | |
2230 | } | |
2231 | ||
2232 | /* Generic routine for printing messages indicating why we | |
2233 | stopped. The behavior of this function depends on the value | |
2234 | 'print_it' in the bpstat structure. Under some circumstances we | |
2235 | may decide not to print anything here and delegate the task to | |
2236 | normal_stop(). */ | |
2237 | ||
2238 | static enum print_stop_action | |
2239 | print_bp_stop_message (bpstat bs) | |
2240 | { | |
2241 | switch (bs->print_it) | |
2242 | { | |
2243 | case print_it_noop: | |
2244 | /* Nothing should be printed for this bpstat entry. */ | |
2245 | return PRINT_UNKNOWN; | |
2246 | break; | |
2247 | ||
2248 | case print_it_done: | |
2249 | /* We still want to print the frame, but we already printed the | |
2250 | relevant messages. */ | |
2251 | return PRINT_SRC_AND_LOC; | |
2252 | break; | |
2253 | ||
2254 | case print_it_normal: | |
2255 | /* Normal case, we handle everything in print_it_typical. */ | |
2256 | return print_it_typical (bs); | |
2257 | break; | |
2258 | default: | |
2259 | internal_error ("print_bp_stop_message: unrecognized enum value"); | |
2260 | break; | |
c906108c | 2261 | } |
c906108c SS |
2262 | } |
2263 | ||
e514a9d6 JM |
2264 | /* Print a message indicating what happened. This is called from |
2265 | normal_stop(). The input to this routine is the head of the bpstat | |
2266 | list - a list of the eventpoints that caused this stop. This | |
2267 | routine calls the generic print routine for printing a message | |
2268 | about reasons for stopping. This will print (for example) the | |
2269 | "Breakpoint n," part of the output. The return value of this | |
2270 | routine is one of: | |
c906108c | 2271 | |
917317f4 JM |
2272 | PRINT_UNKNOWN: Means we printed nothing |
2273 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2274 | code to print the location. An example is |
2275 | "Breakpoint 1, " which should be followed by | |
2276 | the location. | |
917317f4 | 2277 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2278 | to also print the location part of the message. |
2279 | An example is the catch/throw messages, which | |
917317f4 JM |
2280 | don't require a location appended to the end. |
2281 | PRINT_NOTHING: We have done some printing and we don't need any | |
2282 | further info to be printed.*/ | |
c906108c | 2283 | |
917317f4 | 2284 | enum print_stop_action |
c906108c SS |
2285 | bpstat_print (bs) |
2286 | bpstat bs; | |
2287 | { | |
2288 | int val; | |
c5aa993b | 2289 | |
c906108c | 2290 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2291 | (Currently all watchpoints go on the bpstat whether hit or not. |
2292 | That probably could (should) be changed, provided care is taken | |
c906108c | 2293 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2294 | for (; bs; bs = bs->next) |
2295 | { | |
2296 | val = print_bp_stop_message (bs); | |
2297 | if (val == PRINT_SRC_ONLY | |
2298 | || val == PRINT_SRC_AND_LOC | |
2299 | || val == PRINT_NOTHING) | |
2300 | return val; | |
2301 | } | |
c906108c | 2302 | |
e514a9d6 JM |
2303 | /* We reached the end of the chain, or we got a null BS to start |
2304 | with and nothing was printed. */ | |
917317f4 | 2305 | return PRINT_UNKNOWN; |
c906108c SS |
2306 | } |
2307 | ||
2308 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2309 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2310 | The argument is a "struct expression *" that has been cast to char * to | |
2311 | make it pass through catch_errors. */ | |
2312 | ||
2313 | static int | |
2314 | breakpoint_cond_eval (exp) | |
2315 | PTR exp; | |
2316 | { | |
2317 | value_ptr mark = value_mark (); | |
c5aa993b | 2318 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2319 | value_free_to_mark (mark); |
2320 | return i; | |
2321 | } | |
2322 | ||
2323 | /* Allocate a new bpstat and chain it to the current one. */ | |
2324 | ||
2325 | static bpstat | |
2326 | bpstat_alloc (b, cbs) | |
2327 | register struct breakpoint *b; | |
c5aa993b | 2328 | bpstat cbs; /* Current "bs" value */ |
c906108c SS |
2329 | { |
2330 | bpstat bs; | |
2331 | ||
2332 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2333 | cbs->next = bs; | |
2334 | bs->breakpoint_at = b; | |
2335 | /* If the condition is false, etc., don't do the commands. */ | |
2336 | bs->commands = NULL; | |
2337 | bs->old_val = NULL; | |
2338 | bs->print_it = print_it_normal; | |
2339 | return bs; | |
2340 | } | |
2341 | \f | |
2342 | /* Possible return values for watchpoint_check (this can't be an enum | |
2343 | because of check_errors). */ | |
2344 | /* The watchpoint has been deleted. */ | |
2345 | #define WP_DELETED 1 | |
2346 | /* The value has changed. */ | |
2347 | #define WP_VALUE_CHANGED 2 | |
2348 | /* The value has not changed. */ | |
2349 | #define WP_VALUE_NOT_CHANGED 3 | |
2350 | ||
2351 | #define BP_TEMPFLAG 1 | |
2352 | #define BP_HARDWAREFLAG 2 | |
2353 | ||
2354 | /* Check watchpoint condition. */ | |
2355 | ||
2356 | static int | |
2357 | watchpoint_check (p) | |
2358 | PTR p; | |
2359 | { | |
2360 | bpstat bs = (bpstat) p; | |
2361 | struct breakpoint *b; | |
2362 | struct frame_info *fr; | |
2363 | int within_current_scope; | |
2364 | ||
2365 | b = bs->breakpoint_at; | |
2366 | ||
2367 | if (b->exp_valid_block == NULL) | |
2368 | within_current_scope = 1; | |
2369 | else | |
2370 | { | |
2371 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2372 | any chance of handling watchpoints on local variables, we'll need |
2373 | the frame chain (so we can determine if we're in scope). */ | |
2374 | reinit_frame_cache (); | |
c906108c SS |
2375 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
2376 | within_current_scope = (fr != NULL); | |
2377 | if (within_current_scope) | |
2378 | /* If we end up stopping, the current frame will get selected | |
2379 | in normal_stop. So this call to select_frame won't affect | |
2380 | the user. */ | |
2381 | select_frame (fr, -1); | |
2382 | } | |
c5aa993b | 2383 | |
c906108c SS |
2384 | if (within_current_scope) |
2385 | { | |
2386 | /* We use value_{,free_to_}mark because it could be a | |
2387 | *long* time before we return to the command level and | |
c5aa993b JM |
2388 | call free_all_values. We can't call free_all_values because |
2389 | we might be in the middle of evaluating a function call. */ | |
c906108c SS |
2390 | |
2391 | value_ptr mark = value_mark (); | |
2392 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
2393 | if (!value_equal (b->val, new_val)) | |
2394 | { | |
2395 | release_value (new_val); | |
2396 | value_free_to_mark (mark); | |
2397 | bs->old_val = b->val; | |
2398 | b->val = new_val; | |
2399 | /* We will stop here */ | |
2400 | return WP_VALUE_CHANGED; | |
2401 | } | |
2402 | else | |
2403 | { | |
2404 | /* Nothing changed, don't do anything. */ | |
2405 | value_free_to_mark (mark); | |
2406 | /* We won't stop here */ | |
2407 | return WP_VALUE_NOT_CHANGED; | |
2408 | } | |
2409 | } | |
2410 | else | |
2411 | { | |
2412 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2413 | if we temporarily ignored the watchpoint, then when |
2414 | we reenter the block in which it is valid it contains | |
2415 | garbage (in the case of a function, it may have two | |
2416 | garbage values, one before and one after the prologue). | |
2417 | So we can't even detect the first assignment to it and | |
2418 | watch after that (since the garbage may or may not equal | |
2419 | the first value assigned). */ | |
4ce44c66 JM |
2420 | /* We print all the stop information in print_it_typical(), but |
2421 | in this case, by the time we call print_it_typical() this bp | |
2422 | will be deleted already. So we have no choice but print the | |
2423 | information here. */ | |
8b93c638 | 2424 | #ifdef UI_OUT |
fb40c209 AC |
2425 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2426 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); | |
8b93c638 JM |
2427 | ui_out_text (uiout, "\nWatchpoint "); |
2428 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2429 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2430 | which its expression is valid.\n"); | |
2431 | #else | |
c906108c SS |
2432 | printf_filtered ("\ |
2433 | Watchpoint %d deleted because the program has left the block in\n\ | |
2434 | which its expression is valid.\n", bs->breakpoint_at->number); | |
8b93c638 | 2435 | #endif |
4ce44c66 | 2436 | |
c906108c SS |
2437 | if (b->related_breakpoint) |
2438 | b->related_breakpoint->disposition = del_at_next_stop; | |
2439 | b->disposition = del_at_next_stop; | |
2440 | ||
2441 | return WP_DELETED; | |
2442 | } | |
2443 | } | |
2444 | ||
c906108c SS |
2445 | /* Get a bpstat associated with having just stopped at address *PC |
2446 | and frame address CORE_ADDRESS. Update *PC to point at the | |
2447 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
2448 | if this is known to not be a real breakpoint (it could still be a | |
2449 | watchpoint, though). */ | |
2450 | ||
2451 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2452 | don't understand this stop. Result is a chain of bpstat's such that: | |
2453 | ||
c5aa993b | 2454 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2455 | |
c5aa993b | 2456 | if we understand why we stopped, the result is not null. |
c906108c | 2457 | |
c5aa993b JM |
2458 | Each element of the chain refers to a particular breakpoint or |
2459 | watchpoint at which we have stopped. (We may have stopped for | |
2460 | several reasons concurrently.) | |
c906108c | 2461 | |
c5aa993b JM |
2462 | Each element of the chain has valid next, breakpoint_at, |
2463 | commands, FIXME??? fields. */ | |
c906108c SS |
2464 | |
2465 | bpstat | |
2466 | bpstat_stop_status (pc, not_a_breakpoint) | |
2467 | CORE_ADDR *pc; | |
2468 | int not_a_breakpoint; | |
2469 | { | |
2470 | register struct breakpoint *b, *temp; | |
2471 | CORE_ADDR bp_addr; | |
2472 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2473 | int real_breakpoint = 0; | |
2474 | /* Root of the chain of bpstat's */ | |
2475 | struct bpstats root_bs[1]; | |
2476 | /* Pointer to the last thing in the chain currently. */ | |
2477 | bpstat bs = root_bs; | |
2478 | static char message1[] = | |
c5aa993b JM |
2479 | "Error evaluating expression for watchpoint %d\n"; |
2480 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c SS |
2481 | |
2482 | /* Get the address where the breakpoint would have been. */ | |
6426a772 JM |
2483 | bp_addr = *pc - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P ? |
2484 | 0 : DECR_PC_AFTER_BREAK); | |
c906108c SS |
2485 | |
2486 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
2487 | { |
2488 | if (b->enable == disabled | |
2489 | || b->enable == shlib_disabled | |
2490 | || b->enable == call_disabled) | |
2491 | continue; | |
2492 | ||
2493 | if (b->type != bp_watchpoint | |
2494 | && b->type != bp_hardware_watchpoint | |
2495 | && b->type != bp_read_watchpoint | |
2496 | && b->type != bp_access_watchpoint | |
2497 | && b->type != bp_hardware_breakpoint | |
2498 | && b->type != bp_catch_fork | |
2499 | && b->type != bp_catch_vfork | |
2500 | && b->type != bp_catch_exec | |
2501 | && b->type != bp_catch_catch | |
2502 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
2503 | if (b->address != bp_addr || /* address doesn't match or */ | |
2504 | (overlay_debugging && /* overlay doesn't match */ | |
2505 | section_is_overlay (b->section) && | |
2506 | !section_is_mapped (b->section))) | |
c906108c SS |
2507 | continue; |
2508 | ||
c5aa993b JM |
2509 | if (b->type == bp_hardware_breakpoint |
2510 | && b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2511 | continue; | |
2512 | ||
c5aa993b JM |
2513 | /* Is this a catchpoint of a load or unload? If so, did we |
2514 | get a load or unload of the specified library? If not, | |
2515 | ignore it. */ | |
2516 | if ((b->type == bp_catch_load) | |
c906108c | 2517 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
c5aa993b JM |
2518 | && (!SOLIB_HAVE_LOAD_EVENT (inferior_pid) |
2519 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2520 | && (strcmp (b->dll_pathname, |
2521 | SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2522 | != 0))) | |
c906108c | 2523 | #endif |
c5aa993b JM |
2524 | ) |
2525 | continue; | |
2526 | ||
2527 | if ((b->type == bp_catch_unload) | |
c906108c | 2528 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
c5aa993b JM |
2529 | && (!SOLIB_HAVE_UNLOAD_EVENT (inferior_pid) |
2530 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2531 | && (strcmp (b->dll_pathname, |
2532 | SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2533 | != 0))) | |
c906108c | 2534 | #endif |
c5aa993b JM |
2535 | ) |
2536 | continue; | |
c906108c | 2537 | |
c5aa993b JM |
2538 | if ((b->type == bp_catch_fork) |
2539 | && !target_has_forked (inferior_pid, &b->forked_inferior_pid)) | |
2540 | continue; | |
c906108c | 2541 | |
c5aa993b JM |
2542 | if ((b->type == bp_catch_vfork) |
2543 | && !target_has_vforked (inferior_pid, &b->forked_inferior_pid)) | |
2544 | continue; | |
c906108c | 2545 | |
c5aa993b JM |
2546 | if ((b->type == bp_catch_exec) |
2547 | && !target_has_execd (inferior_pid, &b->exec_pathname)) | |
2548 | continue; | |
c906108c | 2549 | |
c5aa993b JM |
2550 | if (ep_is_exception_catchpoint (b) && |
2551 | !(current_exception_event = target_get_current_exception_event ())) | |
2552 | continue; | |
c906108c | 2553 | |
c5aa993b JM |
2554 | /* Come here if it's a watchpoint, or if the break address matches */ |
2555 | ||
2556 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2557 | ||
2558 | /* Watchpoints may change this, if not found to have triggered. */ | |
2559 | bs->stop = 1; | |
2560 | bs->print = 1; | |
2561 | ||
2562 | sprintf (message, message1, b->number); | |
53a5351d JM |
2563 | if (b->type == bp_watchpoint || |
2564 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2565 | { |
53a5351d JM |
2566 | switch (catch_errors (watchpoint_check, bs, message, |
2567 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2568 | { |
2569 | case WP_DELETED: | |
2570 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2571 | /* Actually this is superfluous, because by the time we |
2572 | call print_it_typical() the wp will be already deleted, | |
2573 | and the function will return immediately. */ | |
c5aa993b JM |
2574 | bs->print_it = print_it_done; |
2575 | /* Stop. */ | |
2576 | break; | |
2577 | case WP_VALUE_CHANGED: | |
2578 | /* Stop. */ | |
2579 | ++(b->hit_count); | |
2580 | break; | |
2581 | case WP_VALUE_NOT_CHANGED: | |
2582 | /* Don't stop. */ | |
2583 | bs->print_it = print_it_noop; | |
2584 | bs->stop = 0; | |
c5aa993b JM |
2585 | continue; |
2586 | default: | |
2587 | /* Can't happen. */ | |
2588 | /* FALLTHROUGH */ | |
2589 | case 0: | |
2590 | /* Error from catch_errors. */ | |
2591 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2592 | if (b->related_breakpoint) | |
2593 | b->related_breakpoint->disposition = del_at_next_stop; | |
2594 | b->disposition = del_at_next_stop; | |
2595 | /* We've already printed what needs to be printed. */ | |
2596 | bs->print_it = print_it_done; | |
2597 | ||
2598 | /* Stop. */ | |
2599 | break; | |
2600 | } | |
2601 | } | |
53a5351d JM |
2602 | else if (b->type == bp_read_watchpoint || |
2603 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2604 | { |
2605 | CORE_ADDR addr; | |
2606 | value_ptr v; | |
2607 | int found = 0; | |
2608 | ||
2609 | addr = target_stopped_data_address (); | |
2610 | if (addr == 0) | |
2611 | continue; | |
2612 | for (v = b->val_chain; v; v = v->next) | |
2613 | { | |
5c44784c JM |
2614 | if (VALUE_LVAL (v) == lval_memory |
2615 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2616 | { |
2e70b7b9 MS |
2617 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2618 | ||
2619 | if (v == b->val_chain | |
2620 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2621 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2622 | { | |
2623 | CORE_ADDR vaddr; | |
2624 | ||
2625 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2626 | /* Exact match not required. Within range is | |
2627 | sufficient. */ | |
2628 | if (addr >= vaddr && | |
2629 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2630 | found = 1; | |
2631 | } | |
c5aa993b JM |
2632 | } |
2633 | } | |
2634 | if (found) | |
53a5351d JM |
2635 | switch (catch_errors (watchpoint_check, bs, message, |
2636 | RETURN_MASK_ALL)) | |
c906108c SS |
2637 | { |
2638 | case WP_DELETED: | |
2639 | /* We've already printed what needs to be printed. */ | |
2640 | bs->print_it = print_it_done; | |
2641 | /* Stop. */ | |
2642 | break; | |
2643 | case WP_VALUE_CHANGED: | |
99e5c1c8 MS |
2644 | if (b->type == bp_read_watchpoint) |
2645 | { | |
2646 | /* Don't stop: read watchpoints shouldn't fire if | |
2647 | the value has changed. This is for targets which | |
2648 | cannot set read-only watchpoints. */ | |
2649 | bs->print_it = print_it_noop; | |
2650 | bs->stop = 0; | |
2651 | continue; | |
2652 | } | |
2653 | ++(b->hit_count); | |
2654 | break; | |
c5aa993b | 2655 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2656 | /* Stop. */ |
2657 | ++(b->hit_count); | |
2658 | break; | |
c906108c SS |
2659 | default: |
2660 | /* Can't happen. */ | |
c906108c SS |
2661 | case 0: |
2662 | /* Error from catch_errors. */ | |
2663 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2664 | if (b->related_breakpoint) | |
2665 | b->related_breakpoint->disposition = del_at_next_stop; | |
2666 | b->disposition = del_at_next_stop; | |
2667 | /* We've already printed what needs to be printed. */ | |
2668 | bs->print_it = print_it_done; | |
c906108c SS |
2669 | break; |
2670 | } | |
53a5351d JM |
2671 | else /* found == 0 */ |
2672 | { | |
2673 | /* This is a case where some watchpoint(s) triggered, | |
2674 | but not at the address of this watchpoint (FOUND | |
2675 | was left zero). So don't print anything for this | |
2676 | watchpoint. */ | |
2677 | bs->print_it = print_it_noop; | |
2678 | bs->stop = 0; | |
2679 | continue; | |
2680 | } | |
c5aa993b JM |
2681 | } |
2682 | else | |
2683 | { | |
2684 | /* By definition, an encountered breakpoint is a triggered | |
2685 | breakpoint. */ | |
2686 | ++(b->hit_count); | |
c906108c | 2687 | |
c5aa993b JM |
2688 | real_breakpoint = 1; |
2689 | } | |
2690 | ||
ed9a39eb JM |
2691 | if (b->frame && |
2692 | b->frame != (get_current_frame ())->frame) | |
c5aa993b JM |
2693 | bs->stop = 0; |
2694 | else | |
2695 | { | |
2696 | int value_is_zero = 0; | |
2697 | ||
2698 | if (b->cond) | |
2699 | { | |
2700 | /* Need to select the frame, with all that implies | |
2701 | so that the conditions will have the right context. */ | |
2702 | select_frame (get_current_frame (), 0); | |
2703 | value_is_zero | |
2704 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2705 | "Error in testing breakpoint condition:\n", | |
2706 | RETURN_MASK_ALL); | |
2707 | /* FIXME-someday, should give breakpoint # */ | |
2708 | free_all_values (); | |
2709 | } | |
2710 | if (b->cond && value_is_zero) | |
2711 | { | |
2712 | bs->stop = 0; | |
2713 | /* Don't consider this a hit. */ | |
2714 | --(b->hit_count); | |
2715 | } | |
2716 | else if (b->ignore_count > 0) | |
2717 | { | |
2718 | b->ignore_count--; | |
5c44784c | 2719 | annotate_ignore_count_change (); |
c5aa993b JM |
2720 | bs->stop = 0; |
2721 | } | |
2722 | else | |
2723 | { | |
2724 | /* We will stop here */ | |
2725 | if (b->disposition == disable) | |
2726 | b->enable = disabled; | |
2727 | bs->commands = b->commands; | |
2728 | if (b->silent) | |
2729 | bs->print = 0; | |
2730 | if (bs->commands && | |
2731 | (STREQ ("silent", bs->commands->line) || | |
2732 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2733 | { | |
2734 | bs->commands = bs->commands->next; | |
c906108c | 2735 | bs->print = 0; |
c5aa993b JM |
2736 | } |
2737 | } | |
2738 | } | |
2739 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2740 | if (bs->stop == 0 || bs->print == 0) | |
2741 | bs->print_it = print_it_noop; | |
2742 | } | |
c906108c SS |
2743 | |
2744 | bs->next = NULL; /* Terminate the chain */ | |
2745 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2746 | ||
2747 | if (real_breakpoint && bs) | |
2748 | { | |
c5aa993b | 2749 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2750 | { |
c5aa993b | 2751 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2752 | { |
2753 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2754 | write_pc (*pc); | |
2755 | } | |
2756 | } | |
2757 | else | |
2758 | { | |
2759 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2760 | { | |
2761 | *pc = bp_addr; | |
2762 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2763 | SHIFT_INST_REGS (); |
c906108c SS |
2764 | #else /* No SHIFT_INST_REGS. */ |
2765 | write_pc (bp_addr); | |
2766 | #endif /* No SHIFT_INST_REGS. */ | |
2767 | } | |
2768 | } | |
2769 | } | |
2770 | ||
2771 | /* The value of a hardware watchpoint hasn't changed, but the | |
2772 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2773 | if (bs && !bs->stop && |
c906108c SS |
2774 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2775 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2776 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2777 | { | |
2778 | remove_breakpoints (); | |
2779 | insert_breakpoints (); | |
2780 | } | |
2781 | return bs; | |
2782 | } | |
2783 | \f | |
2784 | /* Tell what to do about this bpstat. */ | |
2785 | struct bpstat_what | |
2786 | bpstat_what (bs) | |
2787 | bpstat bs; | |
2788 | { | |
2789 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2790 | enum class |
2791 | { | |
2792 | /* This bpstat element has no effect on the main_action. */ | |
2793 | no_effect = 0, | |
2794 | ||
2795 | /* There was a watchpoint, stop but don't print. */ | |
2796 | wp_silent, | |
c906108c | 2797 | |
c5aa993b JM |
2798 | /* There was a watchpoint, stop and print. */ |
2799 | wp_noisy, | |
c906108c | 2800 | |
c5aa993b JM |
2801 | /* There was a breakpoint but we're not stopping. */ |
2802 | bp_nostop, | |
c906108c | 2803 | |
c5aa993b JM |
2804 | /* There was a breakpoint, stop but don't print. */ |
2805 | bp_silent, | |
c906108c | 2806 | |
c5aa993b JM |
2807 | /* There was a breakpoint, stop and print. */ |
2808 | bp_noisy, | |
c906108c | 2809 | |
c5aa993b JM |
2810 | /* We hit the longjmp breakpoint. */ |
2811 | long_jump, | |
c906108c | 2812 | |
c5aa993b JM |
2813 | /* We hit the longjmp_resume breakpoint. */ |
2814 | long_resume, | |
c906108c | 2815 | |
c5aa993b JM |
2816 | /* We hit the step_resume breakpoint. */ |
2817 | step_resume, | |
c906108c | 2818 | |
c5aa993b JM |
2819 | /* We hit the through_sigtramp breakpoint. */ |
2820 | through_sig, | |
c906108c | 2821 | |
c5aa993b JM |
2822 | /* We hit the shared library event breakpoint. */ |
2823 | shlib_event, | |
c906108c | 2824 | |
c5aa993b JM |
2825 | /* We caught a shared library event. */ |
2826 | catch_shlib_event, | |
c906108c | 2827 | |
c5aa993b JM |
2828 | /* This is just used to count how many enums there are. */ |
2829 | class_last | |
c906108c SS |
2830 | }; |
2831 | ||
2832 | /* Here is the table which drives this routine. So that we can | |
2833 | format it pretty, we define some abbreviations for the | |
2834 | enum bpstat_what codes. */ | |
2835 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2836 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2837 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2838 | #define sgl BPSTAT_WHAT_SINGLE | |
2839 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2840 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2841 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2842 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2843 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2844 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2845 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2846 | ||
2847 | /* "Can't happen." Might want to print an error message. | |
2848 | abort() is not out of the question, but chances are GDB is just | |
2849 | a bit confused, not unusable. */ | |
2850 | #define err BPSTAT_WHAT_STOP_NOISY | |
2851 | ||
2852 | /* Given an old action and a class, come up with a new action. */ | |
2853 | /* One interesting property of this table is that wp_silent is the same | |
2854 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2855 | after stopping, the check for whether to step over a breakpoint | |
2856 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2857 | reference to how we stopped. We retain separate wp_silent and |
2858 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2859 | |
2860 | Another possibly interesting property of this table is that | |
2861 | there's a partial ordering, priority-like, of the actions. Once | |
2862 | you've decided that some action is appropriate, you'll never go | |
2863 | back and decide something of a lower priority is better. The | |
2864 | ordering is: | |
2865 | ||
c5aa993b JM |
2866 | kc < clr sgl shl slr sn sr ss ts |
2867 | sgl < clrs shl shlr slr sn sr ss ts | |
2868 | slr < err shl shlr sn sr ss ts | |
2869 | clr < clrs err shl shlr sn sr ss ts | |
2870 | clrs < err shl shlr sn sr ss ts | |
2871 | ss < shl shlr sn sr ts | |
2872 | sn < shl shlr sr ts | |
2873 | sr < shl shlr ts | |
2874 | shl < shlr | |
2875 | ts < | |
2876 | shlr < | |
2877 | ||
43ff13b4 JM |
2878 | What I think this means is that we don't need a damned table |
2879 | here. If you just put the rows and columns in the right order, | |
2880 | it'd look awfully regular. We could simply walk the bpstat list | |
2881 | and choose the highest priority action we find, with a little | |
2882 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2883 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2884 | is messy anyway). */ | |
c906108c SS |
2885 | |
2886 | /* step_resume entries: a step resume breakpoint overrides another | |
2887 | breakpoint of signal handling (see comment in wait_for_inferior | |
2888 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
2889 | /* We handle the through_sigtramp_breakpoint the same way; having both | |
2890 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2891 | ||
2892 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2893 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2894 | { | |
2895 | /* old action */ | |
2896 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2897 | */ | |
2898 | /*no_effect */ | |
2899 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2900 | /*wp_silent */ | |
2901 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2902 | /*wp_noisy */ | |
2903 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2904 | /*bp_nostop */ | |
2905 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2906 | /*bp_silent */ | |
2907 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2908 | /*bp_noisy */ | |
2909 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2910 | /*long_jump */ | |
2911 | {slr, ss, sn, slr, err, err, err, sr, ts, shl, shlr}, | |
2912 | /*long_resume */ | |
2913 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2914 | /*step_resume */ | |
2915 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2916 | /*through_sig */ | |
2917 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2918 | /*shlib */ | |
2919 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2920 | /*catch_shlib */ | |
2921 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2922 | }; | |
c906108c SS |
2923 | |
2924 | #undef kc | |
2925 | #undef ss | |
2926 | #undef sn | |
2927 | #undef sgl | |
2928 | #undef slr | |
2929 | #undef clr | |
2930 | #undef clrs | |
2931 | #undef err | |
2932 | #undef sr | |
2933 | #undef ts | |
2934 | #undef shl | |
2935 | #undef shlr | |
2936 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2937 | struct bpstat_what retval; | |
2938 | ||
2939 | retval.call_dummy = 0; | |
2940 | for (; bs != NULL; bs = bs->next) | |
2941 | { | |
2942 | enum class bs_class = no_effect; | |
2943 | if (bs->breakpoint_at == NULL) | |
2944 | /* I suspect this can happen if it was a momentary breakpoint | |
2945 | which has since been deleted. */ | |
2946 | continue; | |
2947 | switch (bs->breakpoint_at->type) | |
2948 | { | |
2949 | case bp_none: | |
2950 | continue; | |
2951 | ||
2952 | case bp_breakpoint: | |
2953 | case bp_hardware_breakpoint: | |
2954 | case bp_until: | |
2955 | case bp_finish: | |
2956 | if (bs->stop) | |
2957 | { | |
2958 | if (bs->print) | |
2959 | bs_class = bp_noisy; | |
2960 | else | |
2961 | bs_class = bp_silent; | |
2962 | } | |
2963 | else | |
2964 | bs_class = bp_nostop; | |
2965 | break; | |
2966 | case bp_watchpoint: | |
2967 | case bp_hardware_watchpoint: | |
2968 | case bp_read_watchpoint: | |
2969 | case bp_access_watchpoint: | |
2970 | if (bs->stop) | |
2971 | { | |
2972 | if (bs->print) | |
2973 | bs_class = wp_noisy; | |
2974 | else | |
2975 | bs_class = wp_silent; | |
2976 | } | |
2977 | else | |
53a5351d JM |
2978 | /* There was a watchpoint, but we're not stopping. |
2979 | This requires no further action. */ | |
c906108c SS |
2980 | bs_class = no_effect; |
2981 | break; | |
2982 | case bp_longjmp: | |
2983 | bs_class = long_jump; | |
2984 | break; | |
2985 | case bp_longjmp_resume: | |
2986 | bs_class = long_resume; | |
2987 | break; | |
2988 | case bp_step_resume: | |
2989 | if (bs->stop) | |
2990 | { | |
2991 | bs_class = step_resume; | |
2992 | } | |
2993 | else | |
2994 | /* It is for the wrong frame. */ | |
2995 | bs_class = bp_nostop; | |
2996 | break; | |
2997 | case bp_through_sigtramp: | |
2998 | bs_class = through_sig; | |
2999 | break; | |
3000 | case bp_watchpoint_scope: | |
3001 | bs_class = bp_nostop; | |
3002 | break; | |
c5aa993b JM |
3003 | case bp_shlib_event: |
3004 | bs_class = shlib_event; | |
3005 | break; | |
c4093a6a JM |
3006 | case bp_thread_event: |
3007 | bs_class = bp_nostop; | |
3008 | break; | |
c5aa993b JM |
3009 | case bp_catch_load: |
3010 | case bp_catch_unload: | |
3011 | /* Only if this catchpoint triggered should we cause the | |
3012 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3013 | catchpoint. */ | |
3014 | if (bs->stop) | |
3015 | bs_class = catch_shlib_event; | |
3016 | else | |
3017 | bs_class = no_effect; | |
3018 | break; | |
3019 | case bp_catch_fork: | |
3020 | case bp_catch_vfork: | |
3021 | case bp_catch_exec: | |
3022 | if (bs->stop) | |
3023 | { | |
3024 | if (bs->print) | |
3025 | bs_class = bp_noisy; | |
3026 | else | |
3027 | bs_class = bp_silent; | |
3028 | } | |
3029 | else | |
53a5351d JM |
3030 | /* There was a catchpoint, but we're not stopping. |
3031 | This requires no further action. */ | |
c5aa993b JM |
3032 | bs_class = no_effect; |
3033 | break; | |
3034 | case bp_catch_catch: | |
3035 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3036 | bs_class = bp_nostop; | |
3037 | else if (bs->stop) | |
3038 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3039 | break; | |
3040 | case bp_catch_throw: | |
3041 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3042 | bs_class = bp_nostop; | |
3043 | else if (bs->stop) | |
3044 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3045 | break; |
c906108c | 3046 | case bp_call_dummy: |
53a5351d JM |
3047 | /* Make sure the action is stop (silent or noisy), |
3048 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3049 | bs_class = bp_silent; |
3050 | retval.call_dummy = 1; | |
3051 | break; | |
3052 | } | |
c5aa993b | 3053 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3054 | } |
3055 | retval.main_action = current_action; | |
3056 | return retval; | |
3057 | } | |
3058 | ||
3059 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3060 | without hardware support). This isn't related to a specific bpstat, | |
3061 | just to things like whether watchpoints are set. */ | |
3062 | ||
c5aa993b | 3063 | int |
c906108c SS |
3064 | bpstat_should_step () |
3065 | { | |
3066 | struct breakpoint *b; | |
3067 | ALL_BREAKPOINTS (b) | |
3068 | if (b->enable == enabled && b->type == bp_watchpoint) | |
c5aa993b | 3069 | return 1; |
c906108c SS |
3070 | return 0; |
3071 | } | |
3072 | ||
3073 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3074 | int | |
3075 | bpstat_have_active_hw_watchpoints () | |
3076 | { | |
3077 | struct breakpoint *b; | |
3078 | ALL_BREAKPOINTS (b) | |
3079 | if ((b->enable == enabled) && | |
c5aa993b JM |
3080 | (b->inserted) && |
3081 | ((b->type == bp_hardware_watchpoint) || | |
3082 | (b->type == bp_read_watchpoint) || | |
3083 | (b->type == bp_access_watchpoint))) | |
3084 | return 1; | |
c906108c SS |
3085 | return 0; |
3086 | } | |
c906108c | 3087 | \f |
c5aa993b | 3088 | |
c906108c SS |
3089 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3090 | function returns another bpstat which contains only the catchpoints | |
3091 | on that first list, if any. */ | |
3092 | void | |
3093 | bpstat_get_triggered_catchpoints (ep_list, cp_list) | |
c5aa993b JM |
3094 | bpstat ep_list; |
3095 | bpstat *cp_list; | |
3096 | { | |
3097 | struct bpstats root_bs[1]; | |
3098 | bpstat bs = root_bs; | |
3099 | struct breakpoint *ep; | |
3100 | char *dll_pathname; | |
3101 | ||
c906108c SS |
3102 | bpstat_clear (cp_list); |
3103 | root_bs->next = NULL; | |
c5aa993b JM |
3104 | |
3105 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3106 | { |
3107 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3108 | ep = ep_list->breakpoint_at; | |
3109 | if (ep == NULL) | |
c5aa993b JM |
3110 | break; |
3111 | if ((ep->type != bp_catch_load) && | |
3112 | (ep->type != bp_catch_unload) && | |
3113 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3114 | (ep->type != bp_catch_throw)) |
3115 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3116 | continue; |
3117 | ||
c906108c SS |
3118 | /* Yes; add it to the list. */ |
3119 | bs = bpstat_alloc (ep, bs); | |
3120 | *bs = *ep_list; | |
3121 | bs->next = NULL; | |
3122 | bs = root_bs->next; | |
c5aa993b | 3123 | |
c906108c SS |
3124 | #if defined(SOLIB_ADD) |
3125 | /* Also, for each triggered catchpoint, tag it with the name of | |
3126 | the library that caused this trigger. (We copy the name now, | |
3127 | because it's only guaranteed to be available NOW, when the | |
3128 | catchpoint triggers. Clients who may wish to know the name | |
3129 | later must get it from the catchpoint itself.) */ | |
3130 | if (ep->triggered_dll_pathname != NULL) | |
c5aa993b | 3131 | free (ep->triggered_dll_pathname); |
c906108c | 3132 | if (ep->type == bp_catch_load) |
c5aa993b | 3133 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c | 3134 | else |
c5aa993b | 3135 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c SS |
3136 | #else |
3137 | dll_pathname = NULL; | |
3138 | #endif | |
3139 | if (dll_pathname) | |
3140 | { | |
53a5351d JM |
3141 | ep->triggered_dll_pathname = (char *) |
3142 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3143 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3144 | } | |
3145 | else | |
3146 | ep->triggered_dll_pathname = NULL; | |
3147 | } | |
c5aa993b | 3148 | |
c906108c SS |
3149 | *cp_list = bs; |
3150 | } | |
3151 | ||
c4093a6a | 3152 | /* Print B to gdb_stdout. */ |
c906108c | 3153 | static void |
c4093a6a JM |
3154 | print_one_breakpoint (struct breakpoint *b, |
3155 | CORE_ADDR *last_addr) | |
c906108c | 3156 | { |
c906108c SS |
3157 | register struct command_line *l; |
3158 | register struct symbol *sym; | |
c4093a6a JM |
3159 | struct ep_type_description |
3160 | { | |
3161 | enum bptype type; | |
3162 | char *description; | |
3163 | }; | |
3164 | static struct ep_type_description bptypes[] = | |
c906108c | 3165 | { |
c5aa993b JM |
3166 | {bp_none, "?deleted?"}, |
3167 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3168 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3169 | {bp_until, "until"}, |
3170 | {bp_finish, "finish"}, | |
3171 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3172 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3173 | {bp_read_watchpoint, "read watchpoint"}, |
3174 | {bp_access_watchpoint, "acc watchpoint"}, | |
3175 | {bp_longjmp, "longjmp"}, | |
3176 | {bp_longjmp_resume, "longjmp resume"}, | |
3177 | {bp_step_resume, "step resume"}, | |
3178 | {bp_through_sigtramp, "sigtramp"}, | |
3179 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3180 | {bp_call_dummy, "call dummy"}, | |
3181 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3182 | {bp_thread_event, "thread events"}, |
c5aa993b JM |
3183 | {bp_catch_load, "catch load"}, |
3184 | {bp_catch_unload, "catch unload"}, | |
3185 | {bp_catch_fork, "catch fork"}, | |
3186 | {bp_catch_vfork, "catch vfork"}, | |
3187 | {bp_catch_exec, "catch exec"}, | |
3188 | {bp_catch_catch, "catch catch"}, | |
3189 | {bp_catch_throw, "catch throw"} | |
3190 | }; | |
c4093a6a | 3191 | |
c5aa993b JM |
3192 | static char *bpdisps[] = |
3193 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3194 | static char bpenables[] = "nynny"; |
c906108c | 3195 | char wrap_indent[80]; |
8b93c638 JM |
3196 | #ifdef UI_OUT |
3197 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
3198 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3199 | #endif | |
c906108c | 3200 | |
c4093a6a | 3201 | annotate_record (); |
8b93c638 JM |
3202 | #ifdef UI_OUT |
3203 | ui_out_list_begin (uiout, "bkpt"); | |
3204 | #endif | |
c4093a6a JM |
3205 | |
3206 | /* 1 */ | |
3207 | annotate_field (0); | |
8b93c638 JM |
3208 | #ifdef UI_OUT |
3209 | ui_out_field_int (uiout, "number", b->number); | |
3210 | #else | |
c4093a6a | 3211 | printf_filtered ("%-3d ", b->number); |
8b93c638 | 3212 | #endif |
c4093a6a JM |
3213 | |
3214 | /* 2 */ | |
3215 | annotate_field (1); | |
3216 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3217 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3218 | internal_error ("bptypes table does not describe type #%d.", | |
3219 | (int) b->type); | |
8b93c638 JM |
3220 | #ifdef UI_OUT |
3221 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3222 | #else | |
c4093a6a | 3223 | printf_filtered ("%-14s ", bptypes[(int) b->type].description); |
8b93c638 | 3224 | #endif |
c4093a6a JM |
3225 | |
3226 | /* 3 */ | |
3227 | annotate_field (2); | |
8b93c638 JM |
3228 | #ifdef UI_OUT |
3229 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); | |
3230 | #else | |
c4093a6a | 3231 | printf_filtered ("%-4s ", bpdisps[(int) b->disposition]); |
8b93c638 | 3232 | #endif |
c4093a6a JM |
3233 | |
3234 | /* 4 */ | |
3235 | annotate_field (3); | |
8b93c638 JM |
3236 | #ifdef UI_OUT |
3237 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable]); | |
3238 | ui_out_spaces (uiout, 2); | |
3239 | #else | |
c4093a6a | 3240 | printf_filtered ("%-3c ", bpenables[(int) b->enable]); |
8b93c638 | 3241 | #endif |
c4093a6a JM |
3242 | |
3243 | /* 5 and 6 */ | |
3244 | strcpy (wrap_indent, " "); | |
3245 | if (addressprint) | |
3246 | strcat (wrap_indent, " "); | |
3247 | switch (b->type) | |
c5aa993b | 3248 | { |
c4093a6a JM |
3249 | case bp_none: |
3250 | internal_error ("print_one_breakpoint: bp_none encountered\n"); | |
3251 | break; | |
c906108c | 3252 | |
c4093a6a JM |
3253 | case bp_watchpoint: |
3254 | case bp_hardware_watchpoint: | |
3255 | case bp_read_watchpoint: | |
3256 | case bp_access_watchpoint: | |
3257 | /* Field 4, the address, is omitted (which makes the columns | |
3258 | not line up too nicely with the headers, but the effect | |
3259 | is relatively readable). */ | |
8b93c638 JM |
3260 | #ifdef UI_OUT |
3261 | if (addressprint) | |
3262 | ui_out_field_skip (uiout, "addr"); | |
3263 | annotate_field (5); | |
3264 | print_expression (b->exp, stb->stream); | |
3265 | ui_out_field_stream (uiout, "what", stb); | |
3266 | #else | |
c4093a6a JM |
3267 | annotate_field (5); |
3268 | print_expression (b->exp, gdb_stdout); | |
8b93c638 | 3269 | #endif |
c4093a6a JM |
3270 | break; |
3271 | ||
3272 | case bp_catch_load: | |
3273 | case bp_catch_unload: | |
3274 | /* Field 4, the address, is omitted (which makes the columns | |
3275 | not line up too nicely with the headers, but the effect | |
3276 | is relatively readable). */ | |
8b93c638 JM |
3277 | #ifdef UI_OUT |
3278 | if (addressprint) | |
3279 | ui_out_field_skip (uiout, "addr"); | |
3280 | annotate_field (5); | |
3281 | if (b->dll_pathname == NULL) | |
3282 | { | |
3283 | ui_out_field_string (uiout, "what", "<any library>"); | |
3284 | ui_out_spaces (uiout, 1); | |
3285 | } | |
3286 | else | |
3287 | { | |
3288 | ui_out_text (uiout, "library \""); | |
3289 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3290 | ui_out_text (uiout, "\" "); | |
3291 | } | |
3292 | #else | |
c4093a6a JM |
3293 | annotate_field (5); |
3294 | if (b->dll_pathname == NULL) | |
3295 | printf_filtered ("<any library> "); | |
3296 | else | |
3297 | printf_filtered ("library \"%s\" ", b->dll_pathname); | |
8b93c638 | 3298 | #endif |
c4093a6a JM |
3299 | break; |
3300 | ||
3301 | case bp_catch_fork: | |
3302 | case bp_catch_vfork: | |
3303 | /* Field 4, the address, is omitted (which makes the columns | |
3304 | not line up too nicely with the headers, but the effect | |
3305 | is relatively readable). */ | |
8b93c638 JM |
3306 | #ifdef UI_OUT |
3307 | if (addressprint) | |
3308 | ui_out_field_skip (uiout, "addr"); | |
3309 | annotate_field (5); | |
3310 | if (b->forked_inferior_pid != 0) | |
3311 | { | |
3312 | ui_out_text (uiout, "process "); | |
3313 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3314 | ui_out_spaces (uiout, 1); | |
3315 | } | |
3316 | #else | |
c4093a6a JM |
3317 | annotate_field (5); |
3318 | if (b->forked_inferior_pid != 0) | |
3319 | printf_filtered ("process %d ", b->forked_inferior_pid); | |
3320 | break; | |
8b93c638 | 3321 | #endif |
c4093a6a JM |
3322 | |
3323 | case bp_catch_exec: | |
3324 | /* Field 4, the address, is omitted (which makes the columns | |
3325 | not line up too nicely with the headers, but the effect | |
3326 | is relatively readable). */ | |
8b93c638 JM |
3327 | #ifdef UI_OUT |
3328 | if (addressprint) | |
3329 | ui_out_field_skip (uiout, "addr"); | |
3330 | annotate_field (5); | |
3331 | if (b->exec_pathname != NULL) | |
3332 | { | |
3333 | ui_out_text (uiout, "program \""); | |
3334 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3335 | ui_out_text (uiout, "\" "); | |
3336 | } | |
3337 | #else | |
c4093a6a JM |
3338 | annotate_field (5); |
3339 | if (b->exec_pathname != NULL) | |
3340 | printf_filtered ("program \"%s\" ", b->exec_pathname); | |
8b93c638 | 3341 | #endif |
c4093a6a | 3342 | break; |
c906108c | 3343 | |
c4093a6a JM |
3344 | case bp_catch_catch: |
3345 | /* Field 4, the address, is omitted (which makes the columns | |
3346 | not line up too nicely with the headers, but the effect | |
3347 | is relatively readable). */ | |
8b93c638 JM |
3348 | #ifdef UI_OUT |
3349 | if (addressprint) | |
3350 | ui_out_field_skip (uiout, "addr"); | |
3351 | annotate_field (5); | |
3352 | ui_out_field_string (uiout, "what", "exception catch"); | |
3353 | ui_out_spaces (uiout, 1); | |
3354 | #else | |
c4093a6a JM |
3355 | annotate_field (5); |
3356 | printf_filtered ("exception catch "); | |
8b93c638 | 3357 | #endif |
c4093a6a | 3358 | break; |
c906108c | 3359 | |
c4093a6a JM |
3360 | case bp_catch_throw: |
3361 | /* Field 4, the address, is omitted (which makes the columns | |
3362 | not line up too nicely with the headers, but the effect | |
3363 | is relatively readable). */ | |
8b93c638 JM |
3364 | #ifdef UI_OUT |
3365 | if (addressprint) | |
3366 | ui_out_field_skip (uiout, "addr"); | |
3367 | annotate_field (5); | |
3368 | ui_out_field_string (uiout, "what", "exception throw"); | |
3369 | ui_out_spaces (uiout, 1); | |
3370 | #else | |
c4093a6a JM |
3371 | annotate_field (5); |
3372 | printf_filtered ("exception throw "); | |
8b93c638 | 3373 | #endif |
c4093a6a JM |
3374 | break; |
3375 | ||
3376 | case bp_breakpoint: | |
3377 | case bp_hardware_breakpoint: | |
3378 | case bp_until: | |
3379 | case bp_finish: | |
3380 | case bp_longjmp: | |
3381 | case bp_longjmp_resume: | |
3382 | case bp_step_resume: | |
3383 | case bp_through_sigtramp: | |
3384 | case bp_watchpoint_scope: | |
3385 | case bp_call_dummy: | |
3386 | case bp_shlib_event: | |
3387 | case bp_thread_event: | |
8b93c638 JM |
3388 | #ifdef UI_OUT |
3389 | if (addressprint) | |
3390 | { | |
3391 | annotate_field (4); | |
3392 | ui_out_field_core_addr (uiout, "addr", b->address); | |
3393 | } | |
3394 | annotate_field (5); | |
3395 | *last_addr = b->address; | |
3396 | if (b->source_file) | |
3397 | { | |
3398 | sym = find_pc_sect_function (b->address, b->section); | |
3399 | if (sym) | |
3400 | { | |
3401 | ui_out_text (uiout, "in "); | |
3402 | ui_out_field_string (uiout, "func", | |
3403 | SYMBOL_SOURCE_NAME (sym)); | |
3404 | ui_out_wrap_hint (uiout, wrap_indent); | |
3405 | ui_out_text (uiout, " at "); | |
3406 | } | |
3407 | ui_out_field_string (uiout, "file", b->source_file); | |
3408 | ui_out_text (uiout, ":"); | |
3409 | ui_out_field_int (uiout, "line", b->line_number); | |
3410 | } | |
3411 | else | |
3412 | { | |
3413 | print_address_symbolic (b->address, stb->stream, demangle, ""); | |
3414 | ui_out_field_stream (uiout, "at", stb); | |
3415 | } | |
3416 | #else | |
c5aa993b | 3417 | if (addressprint) |
c5aa993b | 3418 | { |
c4093a6a JM |
3419 | annotate_field (4); |
3420 | /* FIXME-32x64: need a print_address_numeric with | |
3421 | field width */ | |
3422 | printf_filtered | |
3423 | ("%s ", | |
3424 | local_hex_string_custom | |
3425 | ((unsigned long) b->address, "08l")); | |
3426 | } | |
3427 | annotate_field (5); | |
3428 | *last_addr = b->address; | |
3429 | if (b->source_file) | |
3430 | { | |
3431 | sym = find_pc_sect_function (b->address, b->section); | |
3432 | if (sym) | |
c5aa993b | 3433 | { |
c4093a6a JM |
3434 | fputs_filtered ("in ", gdb_stdout); |
3435 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
3436 | wrap_here (wrap_indent); | |
3437 | fputs_filtered (" at ", gdb_stdout); | |
c5aa993b | 3438 | } |
c4093a6a JM |
3439 | fputs_filtered (b->source_file, gdb_stdout); |
3440 | printf_filtered (":%d", b->line_number); | |
c5aa993b | 3441 | } |
c4093a6a JM |
3442 | else |
3443 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); | |
8b93c638 | 3444 | #endif |
c4093a6a JM |
3445 | break; |
3446 | } | |
3447 | ||
3448 | if (b->thread != -1) | |
3449 | { | |
8b93c638 JM |
3450 | #ifdef UI_OUT |
3451 | /* FIXME: This seems to be redundant and lost here; see the | |
3452 | "stop only in" line a little further down. */ | |
3453 | ui_out_text (uiout, " thread "); | |
3454 | ui_out_field_int (uiout, "thread", b->thread); | |
3455 | #else | |
c4093a6a | 3456 | printf_filtered (" thread %d", b->thread); |
8b93c638 | 3457 | #endif |
c4093a6a JM |
3458 | } |
3459 | ||
8b93c638 JM |
3460 | #ifdef UI_OUT |
3461 | ui_out_text (uiout, "\n"); | |
3462 | #else | |
c4093a6a | 3463 | printf_filtered ("\n"); |
8b93c638 | 3464 | #endif |
c4093a6a JM |
3465 | |
3466 | if (b->frame) | |
3467 | { | |
3468 | annotate_field (6); | |
8b93c638 JM |
3469 | #ifdef UI_OUT |
3470 | ui_out_text (uiout, "\tstop only in stack frame at "); | |
3471 | ui_out_field_core_addr (uiout, "frame", b->frame); | |
3472 | ui_out_text (uiout, "\n"); | |
3473 | #else | |
c4093a6a JM |
3474 | printf_filtered ("\tstop only in stack frame at "); |
3475 | print_address_numeric (b->frame, 1, gdb_stdout); | |
c5aa993b | 3476 | printf_filtered ("\n"); |
8b93c638 | 3477 | #endif |
c4093a6a JM |
3478 | } |
3479 | ||
3480 | if (b->cond) | |
3481 | { | |
3482 | annotate_field (7); | |
8b93c638 JM |
3483 | #ifdef UI_OUT |
3484 | ui_out_text (uiout, "\tstop only if "); | |
3485 | print_expression (b->cond, stb->stream); | |
3486 | ui_out_field_stream (uiout, "cond", stb); | |
3487 | ui_out_text (uiout, "\n"); | |
3488 | #else | |
c4093a6a JM |
3489 | printf_filtered ("\tstop only if "); |
3490 | print_expression (b->cond, gdb_stdout); | |
3491 | printf_filtered ("\n"); | |
8b93c638 | 3492 | #endif |
c4093a6a JM |
3493 | } |
3494 | ||
3495 | if (b->thread != -1) | |
3496 | { | |
3497 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3498 | #ifdef UI_OUT |
3499 | ui_out_text (uiout, "\tstop only in thread "); | |
3500 | ui_out_field_int (uiout, "thread", b->thread); | |
3501 | ui_out_text (uiout, "\n"); | |
3502 | #else | |
c4093a6a | 3503 | printf_filtered ("\tstop only in thread %d\n", b->thread); |
8b93c638 | 3504 | #endif |
c4093a6a JM |
3505 | } |
3506 | ||
3507 | if (show_breakpoint_hit_counts && b->hit_count) | |
3508 | { | |
3509 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3510 | #ifdef UI_OUT |
3511 | if (ep_is_catchpoint (b)) | |
3512 | ui_out_text (uiout, "\tcatchpoint"); | |
3513 | else | |
3514 | ui_out_text (uiout, "\tbreakpoint"); | |
3515 | ui_out_text (uiout, " already hit "); | |
3516 | ui_out_field_int (uiout, "times", b->hit_count); | |
3517 | if (b->hit_count == 1) | |
3518 | ui_out_text (uiout, " time\n"); | |
3519 | else | |
3520 | ui_out_text (uiout, " times\n"); | |
3521 | #else | |
c4093a6a JM |
3522 | if (ep_is_catchpoint (b)) |
3523 | printf_filtered ("\tcatchpoint"); | |
3524 | else | |
3525 | printf_filtered ("\tbreakpoint"); | |
3526 | printf_filtered (" already hit %d time%s\n", | |
3527 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
8b93c638 | 3528 | #endif |
c4093a6a JM |
3529 | } |
3530 | ||
fb40c209 AC |
3531 | #ifdef UI_OUT |
3532 | /* Output the count also if it is zero, but only if this is | |
3533 | mi. FIXME: Should have a better test for this. */ | |
3534 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
3535 | if (show_breakpoint_hit_counts && b->hit_count == 0) | |
3536 | ui_out_field_int (uiout, "times", b->hit_count); | |
3537 | #endif | |
8b93c638 | 3538 | |
c4093a6a JM |
3539 | if (b->ignore_count) |
3540 | { | |
3541 | annotate_field (8); | |
8b93c638 JM |
3542 | #ifdef UI_OUT |
3543 | ui_out_text (uiout, "\tignore next "); | |
3544 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3545 | ui_out_text (uiout, " hits\n"); | |
3546 | #else | |
c4093a6a | 3547 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); |
8b93c638 | 3548 | #endif |
c4093a6a JM |
3549 | } |
3550 | ||
3551 | if ((l = b->commands)) | |
3552 | { | |
3553 | annotate_field (9); | |
8b93c638 JM |
3554 | #ifdef UI_OUT |
3555 | ui_out_list_begin (uiout, "script"); | |
3556 | print_command_lines (uiout, l, 4); | |
3557 | ui_out_list_end (uiout); | |
3558 | #else | |
c4093a6a | 3559 | while (l) |
c5aa993b | 3560 | { |
c4093a6a JM |
3561 | print_command_line (l, 4, gdb_stdout); |
3562 | l = l->next; | |
c5aa993b | 3563 | } |
8b93c638 | 3564 | #endif |
c4093a6a | 3565 | } |
8b93c638 JM |
3566 | #ifdef UI_OUT |
3567 | ui_out_list_end (uiout); | |
3568 | do_cleanups (old_chain); | |
3569 | #endif | |
c4093a6a | 3570 | } |
c5aa993b | 3571 | |
c4093a6a JM |
3572 | struct captured_breakpoint_query_args |
3573 | { | |
3574 | int bnum; | |
3575 | }; | |
c5aa993b | 3576 | |
c4093a6a JM |
3577 | static int |
3578 | do_captured_breakpoint_query (void *data) | |
3579 | { | |
3580 | struct captured_breakpoint_query_args *args = data; | |
3581 | register struct breakpoint *b; | |
3582 | CORE_ADDR dummy_addr = 0; | |
3583 | ALL_BREAKPOINTS (b) | |
3584 | { | |
3585 | if (args->bnum == b->number) | |
c5aa993b | 3586 | { |
c4093a6a JM |
3587 | print_one_breakpoint (b, &dummy_addr); |
3588 | return GDB_RC_OK; | |
c5aa993b | 3589 | } |
c4093a6a JM |
3590 | } |
3591 | return GDB_RC_NONE; | |
3592 | } | |
c5aa993b | 3593 | |
c4093a6a JM |
3594 | enum gdb_rc |
3595 | gdb_breakpoint_query (/* output object, */ int bnum) | |
3596 | { | |
3597 | struct captured_breakpoint_query_args args; | |
3598 | args.bnum = bnum; | |
3599 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3600 | an error. */ | |
3601 | return catch_errors (do_captured_breakpoint_query, &args, | |
3602 | NULL, RETURN_MASK_ALL); | |
3603 | } | |
c5aa993b | 3604 | |
c4093a6a JM |
3605 | /* Print information on breakpoint number BNUM, or -1 if all. |
3606 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
3607 | is nonzero, process only watchpoints. */ | |
c906108c | 3608 | |
c4093a6a JM |
3609 | static void |
3610 | breakpoint_1 (bnum, allflag) | |
3611 | int bnum; | |
3612 | int allflag; | |
3613 | { | |
3614 | register struct breakpoint *b; | |
3615 | CORE_ADDR last_addr = (CORE_ADDR) -1; | |
3616 | int found_a_breakpoint = 0; | |
3617 | ||
8b93c638 JM |
3618 | #ifdef UI_OUT |
3619 | if (addressprint) | |
3620 | ui_out_table_begin (uiout, 6, "BreakpointTable"); | |
3621 | else | |
3622 | ui_out_table_begin (uiout, 5, "BreakpointTable"); | |
3623 | #endif /* UI_OUT */ | |
3624 | ||
c4093a6a JM |
3625 | ALL_BREAKPOINTS (b) |
3626 | if (bnum == -1 | |
3627 | || bnum == b->number) | |
3628 | { | |
3629 | /* We only print out user settable breakpoints unless the | |
3630 | allflag is set. */ | |
3631 | if (!allflag | |
3632 | && b->type != bp_breakpoint | |
3633 | && b->type != bp_catch_load | |
3634 | && b->type != bp_catch_unload | |
3635 | && b->type != bp_catch_fork | |
3636 | && b->type != bp_catch_vfork | |
3637 | && b->type != bp_catch_exec | |
3638 | && b->type != bp_catch_catch | |
3639 | && b->type != bp_catch_throw | |
3640 | && b->type != bp_hardware_breakpoint | |
3641 | && b->type != bp_watchpoint | |
3642 | && b->type != bp_read_watchpoint | |
3643 | && b->type != bp_access_watchpoint | |
3644 | && b->type != bp_hardware_watchpoint) | |
3645 | continue; | |
3646 | ||
3647 | if (!found_a_breakpoint++) | |
3648 | { | |
3649 | annotate_breakpoints_headers (); | |
8b93c638 JM |
3650 | #ifdef UI_OUT |
3651 | annotate_field (0); | |
3652 | ui_out_table_header (uiout, 3, ui_left, "Num"); /* 1 */ | |
3653 | annotate_field (1); | |
3654 | ui_out_table_header (uiout, 14, ui_left, "Type"); /* 2 */ | |
3655 | annotate_field (2); | |
3656 | ui_out_table_header (uiout, 4, ui_left, "Disp"); /* 3 */ | |
3657 | annotate_field (3); | |
3658 | ui_out_table_header (uiout, 3, ui_left, "Enb"); /* 4 */ | |
3659 | if (addressprint) | |
3660 | { | |
3661 | annotate_field (4); | |
3662 | ui_out_table_header (uiout, 10, ui_left, "Address"); /* 5 */ | |
3663 | } | |
3664 | annotate_field (5); | |
3665 | ui_out_table_header (uiout, 40, ui_noalign, "What"); /* 6 */ | |
3666 | ui_out_table_body (uiout); | |
3667 | #else | |
c4093a6a JM |
3668 | annotate_field (0); |
3669 | printf_filtered ("Num "); | |
3670 | annotate_field (1); | |
3671 | printf_filtered ("Type "); | |
3672 | annotate_field (2); | |
3673 | printf_filtered ("Disp "); | |
3674 | annotate_field (3); | |
3675 | printf_filtered ("Enb "); | |
3676 | if (addressprint) | |
3677 | { | |
3678 | annotate_field (4); | |
3679 | printf_filtered ("Address "); | |
3680 | } | |
3681 | annotate_field (5); | |
3682 | printf_filtered ("What\n"); | |
8b93c638 | 3683 | #endif /* UI_OUT */ |
c4093a6a JM |
3684 | annotate_breakpoints_table (); |
3685 | } | |
3686 | ||
3687 | print_one_breakpoint (b, &last_addr); | |
3688 | } | |
3689 | ||
c906108c SS |
3690 | if (!found_a_breakpoint) |
3691 | { | |
8b93c638 JM |
3692 | #ifdef UI_OUT |
3693 | if (bnum == -1) | |
3694 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3695 | else | |
3696 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3697 | bnum); | |
3698 | #else | |
c906108c | 3699 | if (bnum == -1) |
c5aa993b | 3700 | printf_filtered ("No breakpoints or watchpoints.\n"); |
c906108c | 3701 | else |
c5aa993b | 3702 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); |
8b93c638 | 3703 | #endif /* UI_OUT */ |
c906108c SS |
3704 | } |
3705 | else | |
c4093a6a JM |
3706 | { |
3707 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3708 | that a comparison of an unsigned with -1 is always false. */ | |
3709 | if (last_addr != (CORE_ADDR) -1) | |
3710 | set_next_address (last_addr); | |
3711 | } | |
c906108c | 3712 | |
8b93c638 JM |
3713 | #ifdef UI_OUT |
3714 | ui_out_table_end (uiout); | |
3715 | #endif /* UI_OUT */ | |
c4093a6a JM |
3716 | /* FIXME? Should this be moved up so that it is only called when |
3717 | there have been breakpoints? */ | |
c906108c SS |
3718 | annotate_breakpoints_table_end (); |
3719 | } | |
3720 | ||
3721 | /* ARGSUSED */ | |
3722 | static void | |
3723 | breakpoints_info (bnum_exp, from_tty) | |
3724 | char *bnum_exp; | |
3725 | int from_tty; | |
3726 | { | |
3727 | int bnum = -1; | |
3728 | ||
3729 | if (bnum_exp) | |
3730 | bnum = parse_and_eval_address (bnum_exp); | |
3731 | ||
3732 | breakpoint_1 (bnum, 0); | |
3733 | } | |
3734 | ||
c906108c | 3735 | /* ARGSUSED */ |
7a292a7a | 3736 | static void |
c906108c SS |
3737 | maintenance_info_breakpoints (bnum_exp, from_tty) |
3738 | char *bnum_exp; | |
3739 | int from_tty; | |
3740 | { | |
3741 | int bnum = -1; | |
3742 | ||
3743 | if (bnum_exp) | |
3744 | bnum = parse_and_eval_address (bnum_exp); | |
3745 | ||
3746 | breakpoint_1 (bnum, 1); | |
3747 | } | |
3748 | ||
c906108c SS |
3749 | /* Print a message describing any breakpoints set at PC. */ |
3750 | ||
3751 | static void | |
3752 | describe_other_breakpoints (pc, section) | |
3753 | CORE_ADDR pc; | |
3754 | asection *section; | |
3755 | { | |
3756 | register int others = 0; | |
3757 | register struct breakpoint *b; | |
3758 | ||
3759 | ALL_BREAKPOINTS (b) | |
3760 | if (b->address == pc) | |
c5aa993b JM |
3761 | if (overlay_debugging == 0 || |
3762 | b->section == section) | |
3763 | others++; | |
c906108c SS |
3764 | if (others > 0) |
3765 | { | |
3766 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3767 | ALL_BREAKPOINTS (b) | |
3768 | if (b->address == pc) | |
c5aa993b JM |
3769 | if (overlay_debugging == 0 || |
3770 | b->section == section) | |
3771 | { | |
3772 | others--; | |
3773 | printf_filtered | |
3774 | ("%d%s%s ", | |
3775 | b->number, | |
53a5351d JM |
3776 | ((b->enable == disabled || |
3777 | b->enable == shlib_disabled || | |
c2c6d25f JM |
3778 | b->enable == call_disabled) ? " (disabled)" |
3779 | : b->enable == permanent ? " (permanent)" | |
3780 | : ""), | |
c5aa993b JM |
3781 | (others > 1) ? "," : ((others == 1) ? " and" : "")); |
3782 | } | |
c906108c SS |
3783 | printf_filtered ("also set at pc "); |
3784 | print_address_numeric (pc, 1, gdb_stdout); | |
3785 | printf_filtered (".\n"); | |
3786 | } | |
3787 | } | |
3788 | \f | |
3789 | /* Set the default place to put a breakpoint | |
3790 | for the `break' command with no arguments. */ | |
3791 | ||
3792 | void | |
3793 | set_default_breakpoint (valid, addr, symtab, line) | |
3794 | int valid; | |
3795 | CORE_ADDR addr; | |
3796 | struct symtab *symtab; | |
3797 | int line; | |
3798 | { | |
3799 | default_breakpoint_valid = valid; | |
3800 | default_breakpoint_address = addr; | |
3801 | default_breakpoint_symtab = symtab; | |
3802 | default_breakpoint_line = line; | |
3803 | } | |
3804 | ||
3805 | /* Rescan breakpoints at address ADDRESS, | |
3806 | marking the first one as "first" and any others as "duplicates". | |
c2c6d25f JM |
3807 | This is so that the bpt instruction is only inserted once. |
3808 | If we have a permanent breakpoint at ADDRESS, make that one | |
3809 | the official one, and the rest as duplicates. */ | |
c906108c SS |
3810 | |
3811 | static void | |
3812 | check_duplicates (address, section) | |
3813 | CORE_ADDR address; | |
3814 | asection *section; | |
3815 | { | |
3816 | register struct breakpoint *b; | |
3817 | register int count = 0; | |
c2c6d25f | 3818 | struct breakpoint *perm_bp = 0; |
c906108c SS |
3819 | |
3820 | if (address == 0) /* Watchpoints are uninteresting */ | |
3821 | return; | |
3822 | ||
3823 | ALL_BREAKPOINTS (b) | |
3824 | if (b->enable != disabled | |
3825 | && b->enable != shlib_disabled | |
3826 | && b->enable != call_disabled | |
3827 | && b->address == address | |
3828 | && (overlay_debugging == 0 || b->section == section)) | |
c5aa993b | 3829 | { |
c2c6d25f JM |
3830 | /* Have we found a permanent breakpoint? */ |
3831 | if (b->enable == permanent) | |
3832 | { | |
3833 | perm_bp = b; | |
3834 | break; | |
3835 | } | |
3836 | ||
c5aa993b JM |
3837 | count++; |
3838 | b->duplicate = count > 1; | |
3839 | } | |
c2c6d25f JM |
3840 | |
3841 | /* If we found a permanent breakpoint at this address, go over the | |
3842 | list again and declare all the other breakpoints there to be the | |
3843 | duplicates. */ | |
3844 | if (perm_bp) | |
3845 | { | |
3846 | perm_bp->duplicate = 0; | |
3847 | ||
3848 | /* Permanent breakpoint should always be inserted. */ | |
3849 | if (! perm_bp->inserted) | |
3850 | internal_error ("allegedly permanent breakpoint is not " | |
3851 | "actually inserted"); | |
3852 | ||
3853 | ALL_BREAKPOINTS (b) | |
3854 | if (b != perm_bp) | |
3855 | { | |
3856 | if (b->inserted) | |
3857 | internal_error ("another breakpoint was inserted on top of " | |
3858 | "a permanent breakpoint"); | |
3859 | ||
3860 | if (b->enable != disabled | |
3861 | && b->enable != shlib_disabled | |
3862 | && b->enable != call_disabled | |
3863 | && b->address == address | |
3864 | && (overlay_debugging == 0 || b->section == section)) | |
3865 | b->duplicate = 1; | |
3866 | } | |
3867 | } | |
c906108c SS |
3868 | } |
3869 | ||
3870 | /* Low level routine to set a breakpoint. | |
3871 | Takes as args the three things that every breakpoint must have. | |
3872 | Returns the breakpoint object so caller can set other things. | |
3873 | Does not set the breakpoint number! | |
3874 | Does not print anything. | |
3875 | ||
3876 | ==> This routine should not be called if there is a chance of later | |
3877 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
3878 | your arguments BEFORE calling this routine! */ | |
3879 | ||
3880 | struct breakpoint * | |
3881 | set_raw_breakpoint (sal) | |
3882 | struct symtab_and_line sal; | |
3883 | { | |
3884 | register struct breakpoint *b, *b1; | |
3885 | ||
3886 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3887 | memset (b, 0, sizeof (*b)); | |
3888 | b->address = sal.pc; | |
3889 | if (sal.symtab == NULL) | |
3890 | b->source_file = NULL; | |
3891 | else | |
3892 | b->source_file = savestring (sal.symtab->filename, | |
3893 | strlen (sal.symtab->filename)); | |
3894 | b->section = sal.section; | |
3895 | b->language = current_language->la_language; | |
3896 | b->input_radix = input_radix; | |
3897 | b->thread = -1; | |
3898 | b->line_number = sal.line; | |
3899 | b->enable = enabled; | |
3900 | b->next = 0; | |
3901 | b->silent = 0; | |
3902 | b->ignore_count = 0; | |
3903 | b->commands = NULL; | |
3904 | b->frame = 0; | |
3905 | b->dll_pathname = NULL; | |
3906 | b->triggered_dll_pathname = NULL; | |
3907 | b->forked_inferior_pid = 0; | |
3908 | b->exec_pathname = NULL; | |
3909 | ||
3910 | /* Add this breakpoint to the end of the chain | |
3911 | so that a list of breakpoints will come out in order | |
3912 | of increasing numbers. */ | |
3913 | ||
3914 | b1 = breakpoint_chain; | |
3915 | if (b1 == 0) | |
3916 | breakpoint_chain = b; | |
3917 | else | |
3918 | { | |
3919 | while (b1->next) | |
3920 | b1 = b1->next; | |
3921 | b1->next = b; | |
3922 | } | |
3923 | ||
3924 | check_duplicates (sal.pc, sal.section); | |
3925 | breakpoints_changed (); | |
3926 | ||
3927 | return b; | |
3928 | } | |
3929 | ||
c2c6d25f JM |
3930 | |
3931 | /* Note that the breakpoint object B describes a permanent breakpoint | |
3932 | instruction, hard-wired into the inferior's code. */ | |
3933 | void | |
3934 | make_breakpoint_permanent (struct breakpoint *b) | |
3935 | { | |
3936 | b->enable = permanent; | |
3937 | ||
3938 | /* By definition, permanent breakpoints are already present in the code. */ | |
3939 | b->inserted = 1; | |
3940 | } | |
3941 | ||
c906108c SS |
3942 | #ifdef GET_LONGJMP_TARGET |
3943 | ||
3944 | static void | |
3945 | create_longjmp_breakpoint (func_name) | |
3946 | char *func_name; | |
3947 | { | |
3948 | struct symtab_and_line sal; | |
3949 | struct breakpoint *b; | |
3950 | ||
c5aa993b | 3951 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3952 | if (func_name != NULL) |
3953 | { | |
3954 | struct minimal_symbol *m; | |
3955 | ||
53a5351d JM |
3956 | m = lookup_minimal_symbol_text (func_name, NULL, |
3957 | (struct objfile *) NULL); | |
c906108c SS |
3958 | if (m) |
3959 | sal.pc = SYMBOL_VALUE_ADDRESS (m); | |
3960 | else | |
3961 | return; | |
3962 | } | |
3963 | sal.section = find_pc_overlay (sal.pc); | |
3964 | b = set_raw_breakpoint (sal); | |
c5aa993b JM |
3965 | if (!b) |
3966 | return; | |
c906108c SS |
3967 | |
3968 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; | |
3969 | b->disposition = donttouch; | |
3970 | b->enable = disabled; | |
3971 | b->silent = 1; | |
3972 | if (func_name) | |
c5aa993b | 3973 | b->addr_string = strsave (func_name); |
c906108c SS |
3974 | b->number = internal_breakpoint_number--; |
3975 | } | |
3976 | ||
c5aa993b | 3977 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
c906108c | 3978 | |
53a5351d JM |
3979 | /* Call this routine when stepping and nexting to enable a breakpoint |
3980 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3981 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3982 | ||
3983 | void | |
c5aa993b | 3984 | enable_longjmp_breakpoint () |
c906108c SS |
3985 | { |
3986 | register struct breakpoint *b; | |
3987 | ||
3988 | ALL_BREAKPOINTS (b) | |
3989 | if (b->type == bp_longjmp) | |
c5aa993b JM |
3990 | { |
3991 | b->enable = enabled; | |
3992 | check_duplicates (b->address, b->section); | |
3993 | } | |
c906108c SS |
3994 | } |
3995 | ||
3996 | void | |
c5aa993b | 3997 | disable_longjmp_breakpoint () |
c906108c SS |
3998 | { |
3999 | register struct breakpoint *b; | |
4000 | ||
4001 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4002 | if (b->type == bp_longjmp |
c906108c | 4003 | || b->type == bp_longjmp_resume) |
c5aa993b JM |
4004 | { |
4005 | b->enable = disabled; | |
4006 | check_duplicates (b->address, b->section); | |
4007 | } | |
c906108c SS |
4008 | } |
4009 | ||
c4093a6a JM |
4010 | struct breakpoint * |
4011 | create_thread_event_breakpoint (address) | |
4012 | CORE_ADDR address; | |
4013 | { | |
4014 | struct breakpoint *b; | |
4015 | struct symtab_and_line sal; | |
4016 | char addr_string[80]; /* Surely an addr can't be longer than that. */ | |
4017 | ||
4018 | INIT_SAL (&sal); /* initialize to zeroes */ | |
4019 | sal.pc = address; | |
4020 | sal.section = find_pc_overlay (sal.pc); | |
4021 | if ((b = set_raw_breakpoint (sal)) == NULL) | |
4022 | return NULL; | |
4023 | ||
4024 | b->number = internal_breakpoint_number--; | |
4025 | b->disposition = donttouch; | |
4026 | b->type = bp_thread_event; /* XXX: do we need a new type? | |
4027 | bp_thread_event */ | |
4028 | b->enable = enabled; | |
4029 | /* addr_string has to be used or breakpoint_re_set will delete me. */ | |
4030 | sprintf (addr_string, "*0x%s", paddr (b->address)); | |
4031 | b->addr_string = strsave (addr_string); | |
4032 | ||
4033 | return b; | |
4034 | } | |
4035 | ||
4036 | void | |
4037 | remove_thread_event_breakpoints (void) | |
4038 | { | |
4039 | struct breakpoint *b, *temp; | |
4040 | ||
4041 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4042 | if (b->type == bp_thread_event) | |
4043 | delete_breakpoint (b); | |
4044 | } | |
4045 | ||
c906108c SS |
4046 | #ifdef SOLIB_ADD |
4047 | void | |
4048 | remove_solib_event_breakpoints () | |
4049 | { | |
4050 | register struct breakpoint *b, *temp; | |
4051 | ||
4052 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4053 | if (b->type == bp_shlib_event) | |
c5aa993b | 4054 | delete_breakpoint (b); |
c906108c SS |
4055 | } |
4056 | ||
c2c6d25f | 4057 | struct breakpoint * |
c906108c SS |
4058 | create_solib_event_breakpoint (address) |
4059 | CORE_ADDR address; | |
4060 | { | |
4061 | struct breakpoint *b; | |
4062 | struct symtab_and_line sal; | |
4063 | ||
c5aa993b | 4064 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
4065 | sal.pc = address; |
4066 | sal.section = find_pc_overlay (sal.pc); | |
4067 | b = set_raw_breakpoint (sal); | |
4068 | b->number = internal_breakpoint_number--; | |
4069 | b->disposition = donttouch; | |
4070 | b->type = bp_shlib_event; | |
c2c6d25f JM |
4071 | |
4072 | return b; | |
c906108c SS |
4073 | } |
4074 | ||
104c1213 JM |
4075 | /* Disable any breakpoints that are on code in shared libraries. Only |
4076 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4077 | ||
c906108c SS |
4078 | void |
4079 | disable_breakpoints_in_shlibs (silent) | |
4080 | int silent; | |
4081 | { | |
c5aa993b JM |
4082 | struct breakpoint *b; |
4083 | int disabled_shlib_breaks = 0; | |
c906108c SS |
4084 | |
4085 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4086 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4087 | { |
c906108c | 4088 | #if defined (PC_SOLIB) |
c5aa993b JM |
4089 | if (((b->type == bp_breakpoint) || |
4090 | (b->type == bp_hardware_breakpoint)) && | |
104c1213 | 4091 | b->enable == enabled && |
c5aa993b JM |
4092 | !b->duplicate && |
4093 | PC_SOLIB (b->address)) | |
4094 | { | |
4095 | b->enable = shlib_disabled; | |
4096 | if (!silent) | |
4097 | { | |
4098 | if (!disabled_shlib_breaks) | |
4099 | { | |
4100 | target_terminal_ours_for_output (); | |
53a5351d | 4101 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
4102 | } |
4103 | disabled_shlib_breaks = 1; | |
53a5351d | 4104 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
4105 | } |
4106 | } | |
c906108c | 4107 | #endif |
c5aa993b | 4108 | } |
c906108c SS |
4109 | } |
4110 | ||
4111 | /* Try to reenable any breakpoints in shared libraries. */ | |
4112 | void | |
4113 | re_enable_breakpoints_in_shlibs () | |
4114 | { | |
4115 | struct breakpoint *b; | |
4116 | ||
4117 | ALL_BREAKPOINTS (b) | |
4118 | if (b->enable == shlib_disabled) | |
c5aa993b JM |
4119 | { |
4120 | char buf[1]; | |
c906108c | 4121 | |
c5aa993b JM |
4122 | /* Do not reenable the breakpoint if the shared library |
4123 | is still not mapped in. */ | |
4124 | if (target_read_memory (b->address, buf, 1) == 0) | |
4125 | b->enable = enabled; | |
4126 | } | |
c906108c SS |
4127 | } |
4128 | ||
4129 | #endif | |
4130 | ||
4131 | static void | |
53a5351d | 4132 | solib_load_unload_1 (hookname, tempflag, dll_pathname, cond_string, bp_kind) |
7a292a7a SS |
4133 | char *hookname; |
4134 | int tempflag; | |
4135 | char *dll_pathname; | |
4136 | char *cond_string; | |
4137 | enum bptype bp_kind; | |
c906108c | 4138 | { |
c5aa993b | 4139 | struct breakpoint *b; |
c906108c | 4140 | struct symtabs_and_lines sals; |
c5aa993b JM |
4141 | struct cleanup *old_chain; |
4142 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4143 | char *addr_start = hookname; |
4144 | char *addr_end = NULL; | |
4145 | char **canonical = (char **) NULL; | |
4146 | int thread = -1; /* All threads. */ | |
4147 | ||
c906108c SS |
4148 | /* Set a breakpoint on the specified hook. */ |
4149 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
4150 | addr_end = hookname; | |
c5aa993b | 4151 | |
c906108c SS |
4152 | if (sals.nelts == 0) |
4153 | { | |
4154 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4155 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4156 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4157 | return; | |
4158 | } | |
4159 | if (sals.nelts != 1) | |
4160 | { | |
53a5351d | 4161 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4162 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4163 | return; | |
4164 | } | |
4165 | ||
53a5351d JM |
4166 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4167 | in case the following errors out. */ | |
c906108c | 4168 | old_chain = make_cleanup (free, sals.sals); |
c5aa993b | 4169 | if (canonical != (char **) NULL) |
c906108c SS |
4170 | { |
4171 | make_cleanup (free, canonical); | |
4172 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
4173 | if (canonical[0] != NULL) | |
c5aa993b | 4174 | make_cleanup (free, canonical[0]); |
c906108c | 4175 | } |
c5aa993b | 4176 | |
c906108c | 4177 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4178 | |
c906108c | 4179 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4180 | if (canonical != (char **) NULL) |
c906108c | 4181 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4182 | |
c906108c SS |
4183 | b = set_raw_breakpoint (sals.sals[0]); |
4184 | set_breakpoint_count (breakpoint_count + 1); | |
4185 | b->number = breakpoint_count; | |
4186 | b->cond = NULL; | |
53a5351d JM |
4187 | b->cond_string = (cond_string == NULL) ? |
4188 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4189 | b->thread = thread; |
c5aa993b JM |
4190 | |
4191 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4192 | b->addr_string = canonical[0]; |
4193 | else if (addr_start) | |
4194 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4195 | |
c906108c SS |
4196 | b->enable = enabled; |
4197 | b->disposition = tempflag ? del : donttouch; | |
c5aa993b | 4198 | |
c906108c SS |
4199 | if (dll_pathname == NULL) |
4200 | b->dll_pathname = NULL; | |
4201 | else | |
4202 | { | |
4203 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4204 | strcpy (b->dll_pathname, dll_pathname); | |
4205 | } | |
4206 | b->type = bp_kind; | |
c5aa993b | 4207 | |
c906108c SS |
4208 | mention (b); |
4209 | do_cleanups (old_chain); | |
4210 | } | |
4211 | ||
4212 | void | |
53a5351d JM |
4213 | create_solib_load_event_breakpoint (hookname, tempflag, |
4214 | dll_pathname, cond_string) | |
c5aa993b JM |
4215 | char *hookname; |
4216 | int tempflag; | |
4217 | char *dll_pathname; | |
4218 | char *cond_string; | |
c906108c | 4219 | { |
53a5351d JM |
4220 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4221 | cond_string, bp_catch_load); | |
c906108c SS |
4222 | } |
4223 | ||
4224 | void | |
53a5351d JM |
4225 | create_solib_unload_event_breakpoint (hookname, tempflag, |
4226 | dll_pathname, cond_string) | |
c5aa993b JM |
4227 | char *hookname; |
4228 | int tempflag; | |
4229 | char *dll_pathname; | |
4230 | char *cond_string; | |
c906108c | 4231 | { |
53a5351d JM |
4232 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4233 | cond_string, bp_catch_unload); | |
c906108c SS |
4234 | } |
4235 | ||
4236 | static void | |
4237 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind) | |
7a292a7a SS |
4238 | int tempflag; |
4239 | char *cond_string; | |
4240 | enum bptype bp_kind; | |
c906108c | 4241 | { |
c5aa993b JM |
4242 | struct symtab_and_line sal; |
4243 | struct breakpoint *b; | |
4244 | int thread = -1; /* All threads. */ | |
4245 | ||
4246 | INIT_SAL (&sal); | |
c906108c SS |
4247 | sal.pc = 0; |
4248 | sal.symtab = NULL; | |
4249 | sal.line = 0; | |
c5aa993b | 4250 | |
c906108c SS |
4251 | b = set_raw_breakpoint (sal); |
4252 | set_breakpoint_count (breakpoint_count + 1); | |
4253 | b->number = breakpoint_count; | |
4254 | b->cond = NULL; | |
53a5351d JM |
4255 | b->cond_string = (cond_string == NULL) ? |
4256 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4257 | b->thread = thread; |
4258 | b->addr_string = NULL; | |
4259 | b->enable = enabled; | |
4260 | b->disposition = tempflag ? del : donttouch; | |
4261 | b->forked_inferior_pid = 0; | |
c5aa993b | 4262 | |
c906108c | 4263 | b->type = bp_kind; |
c5aa993b | 4264 | |
c906108c SS |
4265 | mention (b); |
4266 | } | |
4267 | ||
4268 | void | |
4269 | create_fork_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
4270 | int tempflag; |
4271 | char *cond_string; | |
c906108c SS |
4272 | { |
4273 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4274 | } | |
c5aa993b | 4275 | |
c906108c SS |
4276 | void |
4277 | create_vfork_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
4278 | int tempflag; |
4279 | char *cond_string; | |
c906108c SS |
4280 | { |
4281 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4282 | } | |
4283 | ||
4284 | void | |
4285 | create_exec_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
4286 | int tempflag; |
4287 | char *cond_string; | |
c906108c | 4288 | { |
c5aa993b JM |
4289 | struct symtab_and_line sal; |
4290 | struct breakpoint *b; | |
4291 | int thread = -1; /* All threads. */ | |
c906108c | 4292 | |
c5aa993b | 4293 | INIT_SAL (&sal); |
c906108c SS |
4294 | sal.pc = 0; |
4295 | sal.symtab = NULL; | |
4296 | sal.line = 0; | |
4297 | ||
4298 | b = set_raw_breakpoint (sal); | |
4299 | set_breakpoint_count (breakpoint_count + 1); | |
4300 | b->number = breakpoint_count; | |
4301 | b->cond = NULL; | |
53a5351d JM |
4302 | b->cond_string = (cond_string == NULL) ? |
4303 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4304 | b->thread = thread; |
4305 | b->addr_string = NULL; | |
4306 | b->enable = enabled; | |
4307 | b->disposition = tempflag ? del : donttouch; | |
4308 | ||
4309 | b->type = bp_catch_exec; | |
4310 | ||
4311 | mention (b); | |
4312 | } | |
4313 | ||
4314 | static int | |
c5aa993b | 4315 | hw_breakpoint_used_count () |
c906108c SS |
4316 | { |
4317 | register struct breakpoint *b; | |
4318 | int i = 0; | |
4319 | ||
4320 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4321 | { |
4322 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
4323 | i++; | |
4324 | } | |
c906108c SS |
4325 | |
4326 | return i; | |
4327 | } | |
4328 | ||
4329 | static int | |
c5aa993b JM |
4330 | hw_watchpoint_used_count (type, other_type_used) |
4331 | enum bptype type; | |
4332 | int *other_type_used; | |
c906108c SS |
4333 | { |
4334 | register struct breakpoint *b; | |
4335 | int i = 0; | |
4336 | ||
4337 | *other_type_used = 0; | |
4338 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4339 | { |
4340 | if (b->enable == enabled) | |
4341 | { | |
4342 | if (b->type == type) | |
4343 | i++; | |
4344 | else if ((b->type == bp_hardware_watchpoint || | |
4345 | b->type == bp_read_watchpoint || | |
4346 | b->type == bp_access_watchpoint) | |
4347 | && b->enable == enabled) | |
4348 | *other_type_used = 1; | |
4349 | } | |
4350 | } | |
c906108c SS |
4351 | return i; |
4352 | } | |
4353 | ||
53a5351d JM |
4354 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4355 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4356 | |
53a5351d JM |
4357 | FIXME - This ought to be done by setting a temporary breakpoint |
4358 | that gets deleted automatically... */ | |
c906108c SS |
4359 | |
4360 | void | |
c5aa993b | 4361 | set_longjmp_resume_breakpoint (pc, frame) |
c906108c SS |
4362 | CORE_ADDR pc; |
4363 | struct frame_info *frame; | |
4364 | { | |
4365 | register struct breakpoint *b; | |
4366 | ||
4367 | ALL_BREAKPOINTS (b) | |
4368 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
4369 | { |
4370 | b->address = pc; | |
4371 | b->enable = enabled; | |
4372 | if (frame != NULL) | |
4373 | b->frame = frame->frame; | |
4374 | else | |
4375 | b->frame = 0; | |
4376 | check_duplicates (b->address, b->section); | |
4377 | return; | |
4378 | } | |
c906108c SS |
4379 | } |
4380 | ||
4381 | void | |
4382 | disable_watchpoints_before_interactive_call_start () | |
4383 | { | |
c5aa993b | 4384 | struct breakpoint *b; |
c906108c SS |
4385 | |
4386 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4387 | { |
4388 | if (((b->type == bp_watchpoint) | |
4389 | || (b->type == bp_hardware_watchpoint) | |
4390 | || (b->type == bp_read_watchpoint) | |
4391 | || (b->type == bp_access_watchpoint) | |
4392 | || ep_is_exception_catchpoint (b)) | |
4393 | && (b->enable == enabled)) | |
4394 | { | |
4395 | b->enable = call_disabled; | |
4396 | check_duplicates (b->address, b->section); | |
4397 | } | |
4398 | } | |
c906108c SS |
4399 | } |
4400 | ||
4401 | void | |
4402 | enable_watchpoints_after_interactive_call_stop () | |
4403 | { | |
c5aa993b | 4404 | struct breakpoint *b; |
c906108c SS |
4405 | |
4406 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4407 | { |
4408 | if (((b->type == bp_watchpoint) | |
4409 | || (b->type == bp_hardware_watchpoint) | |
4410 | || (b->type == bp_read_watchpoint) | |
4411 | || (b->type == bp_access_watchpoint) | |
4412 | || ep_is_exception_catchpoint (b)) | |
4413 | && (b->enable == call_disabled)) | |
4414 | { | |
4415 | b->enable = enabled; | |
4416 | check_duplicates (b->address, b->section); | |
4417 | } | |
4418 | } | |
c906108c SS |
4419 | } |
4420 | ||
4421 | ||
4422 | /* Set a breakpoint that will evaporate an end of command | |
4423 | at address specified by SAL. | |
4424 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4425 | ||
4426 | struct breakpoint * | |
4427 | set_momentary_breakpoint (sal, frame, type) | |
4428 | struct symtab_and_line sal; | |
4429 | struct frame_info *frame; | |
4430 | enum bptype type; | |
4431 | { | |
4432 | register struct breakpoint *b; | |
4433 | b = set_raw_breakpoint (sal); | |
4434 | b->type = type; | |
4435 | b->enable = enabled; | |
4436 | b->disposition = donttouch; | |
4437 | b->frame = (frame ? frame->frame : 0); | |
4438 | ||
4439 | /* If we're debugging a multi-threaded program, then we | |
4440 | want momentary breakpoints to be active in only a | |
4441 | single thread of control. */ | |
4442 | if (in_thread_list (inferior_pid)) | |
4443 | b->thread = pid_to_thread_id (inferior_pid); | |
4444 | ||
4445 | return b; | |
4446 | } | |
c906108c | 4447 | \f |
c5aa993b | 4448 | |
c906108c SS |
4449 | /* Tell the user we have just set a breakpoint B. */ |
4450 | ||
4451 | static void | |
4452 | mention (b) | |
4453 | struct breakpoint *b; | |
4454 | { | |
4455 | int say_where = 0; | |
8b93c638 JM |
4456 | #ifdef UI_OUT |
4457 | struct cleanup *old_chain; | |
4458 | struct ui_stream *stb; | |
4459 | ||
4460 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4461 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 4462 | #endif /* UI_OUT */ |
c906108c SS |
4463 | |
4464 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4465 | watchpoint) other than breakpoint creation. It should be possible to | |
4466 | clean this up and at the same time replace the random calls to | |
4467 | breakpoint_changed with this hook, as has already been done for | |
4468 | delete_breakpoint_hook and so on. */ | |
4469 | if (create_breakpoint_hook) | |
4470 | create_breakpoint_hook (b); | |
104c1213 | 4471 | breakpoint_create_event (b->number); |
c906108c SS |
4472 | |
4473 | switch (b->type) | |
4474 | { | |
4475 | case bp_none: | |
4476 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4477 | break; | |
8b93c638 JM |
4478 | #ifdef UI_OUT |
4479 | case bp_watchpoint: | |
4480 | ui_out_text (uiout, "Watchpoint "); | |
4481 | ui_out_list_begin (uiout, "wpt"); | |
4482 | ui_out_field_int (uiout, "number", b->number); | |
4483 | ui_out_text (uiout, ": "); | |
4484 | print_expression (b->exp, stb->stream); | |
4485 | ui_out_field_stream (uiout, "exp", stb); | |
4486 | ui_out_list_end (uiout); | |
4487 | break; | |
4488 | case bp_hardware_watchpoint: | |
4489 | ui_out_text (uiout, "Hardware watchpoint "); | |
4490 | ui_out_list_begin (uiout, "wpt"); | |
4491 | ui_out_field_int (uiout, "number", b->number); | |
4492 | ui_out_text (uiout, ": "); | |
4493 | print_expression (b->exp, stb->stream); | |
4494 | ui_out_field_stream (uiout, "exp", stb); | |
4495 | ui_out_list_end (uiout); | |
4496 | break; | |
4497 | #else | |
c906108c SS |
4498 | case bp_watchpoint: |
4499 | printf_filtered ("Watchpoint %d: ", b->number); | |
4500 | print_expression (b->exp, gdb_stdout); | |
4501 | break; | |
4502 | case bp_hardware_watchpoint: | |
4503 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
4504 | print_expression (b->exp, gdb_stdout); | |
4505 | break; | |
8b93c638 JM |
4506 | #endif |
4507 | #ifdef UI_OUT | |
4508 | case bp_read_watchpoint: | |
4509 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4510 | ui_out_list_begin (uiout, "hw-rwpt"); | |
4511 | ui_out_field_int (uiout, "number", b->number); | |
4512 | ui_out_text (uiout, ": "); | |
4513 | print_expression (b->exp, stb->stream); | |
4514 | ui_out_field_stream (uiout, "exp", stb); | |
4515 | ui_out_list_end (uiout); | |
4516 | break; | |
4517 | case bp_access_watchpoint: | |
4518 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4519 | ui_out_list_begin (uiout, "hw-awpt"); | |
4520 | ui_out_field_int (uiout, "number", b->number); | |
4521 | ui_out_text (uiout, ": "); | |
4522 | print_expression (b->exp, stb->stream); | |
4523 | ui_out_field_stream (uiout, "exp", stb); | |
4524 | ui_out_list_end (uiout); | |
4525 | break; | |
4526 | #else | |
c906108c SS |
4527 | case bp_read_watchpoint: |
4528 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
4529 | print_expression (b->exp, gdb_stdout); | |
4530 | break; | |
4531 | case bp_access_watchpoint: | |
53a5351d JM |
4532 | printf_filtered ("Hardware access (read/write) watchpoint %d: ", |
4533 | b->number); | |
c906108c SS |
4534 | print_expression (b->exp, gdb_stdout); |
4535 | break; | |
8b93c638 | 4536 | #endif |
c906108c | 4537 | case bp_breakpoint: |
fb40c209 AC |
4538 | #ifdef UI_OUT |
4539 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4540 | { | |
4541 | say_where = 0; | |
4542 | break; | |
4543 | } | |
4544 | #endif | |
c906108c SS |
4545 | printf_filtered ("Breakpoint %d", b->number); |
4546 | say_where = 1; | |
4547 | break; | |
4548 | case bp_hardware_breakpoint: | |
fb40c209 AC |
4549 | #ifdef UI_OUT |
4550 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4551 | { | |
4552 | say_where = 0; | |
4553 | break; | |
4554 | } | |
4555 | #endif | |
c906108c SS |
4556 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
4557 | say_where = 1; | |
4558 | break; | |
4559 | case bp_catch_load: | |
4560 | case bp_catch_unload: | |
4561 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
4562 | b->number, |
4563 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
4564 | (b->dll_pathname != NULL) ? |
4565 | b->dll_pathname : "<any library>"); | |
c906108c SS |
4566 | break; |
4567 | case bp_catch_fork: | |
4568 | case bp_catch_vfork: | |
4569 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4570 | b->number, |
4571 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
4572 | break; |
4573 | case bp_catch_exec: | |
4574 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 4575 | b->number); |
c906108c SS |
4576 | break; |
4577 | case bp_catch_catch: | |
4578 | case bp_catch_throw: | |
4579 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4580 | b->number, |
4581 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
4582 | break; |
4583 | ||
4584 | case bp_until: | |
4585 | case bp_finish: | |
4586 | case bp_longjmp: | |
4587 | case bp_longjmp_resume: | |
4588 | case bp_step_resume: | |
4589 | case bp_through_sigtramp: | |
4590 | case bp_call_dummy: | |
4591 | case bp_watchpoint_scope: | |
4592 | case bp_shlib_event: | |
c4093a6a | 4593 | case bp_thread_event: |
c906108c SS |
4594 | break; |
4595 | } | |
4596 | if (say_where) | |
4597 | { | |
4598 | if (addressprint || b->source_file == NULL) | |
4599 | { | |
4600 | printf_filtered (" at "); | |
4601 | print_address_numeric (b->address, 1, gdb_stdout); | |
4602 | } | |
4603 | if (b->source_file) | |
4604 | printf_filtered (": file %s, line %d.", | |
4605 | b->source_file, b->line_number); | |
c5aa993b JM |
4606 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, b, 1)); |
4607 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
c906108c | 4608 | } |
8b93c638 JM |
4609 | #ifdef UI_OUT |
4610 | do_cleanups (old_chain); | |
fb40c209 AC |
4611 | #endif |
4612 | #ifdef UI_OUT | |
4613 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4614 | return; | |
8b93c638 | 4615 | #endif |
c906108c SS |
4616 | printf_filtered ("\n"); |
4617 | } | |
c906108c | 4618 | \f |
c5aa993b | 4619 | |
c3f6f71d JM |
4620 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4621 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4622 | COND[i] and COND_STRING[i] values. | |
4623 | ||
4624 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4625 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4626 | array contents). If the function fails (error() is called), the | |
4627 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4628 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4629 | |
4630 | static void | |
c3f6f71d JM |
4631 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4632 | struct expression **cond, char **cond_string, | |
4633 | enum bptype type, enum bpdisp disposition, | |
4634 | int thread, int ignore_count, int from_tty) | |
c906108c | 4635 | { |
c3f6f71d JM |
4636 | if (type == bp_hardware_breakpoint) |
4637 | { | |
4638 | int i = hw_breakpoint_used_count (); | |
4639 | int target_resources_ok = | |
4640 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4641 | i + sals.nelts, 0); | |
4642 | if (target_resources_ok == 0) | |
4643 | error ("No hardware breakpoint support in the target."); | |
4644 | else if (target_resources_ok < 0) | |
4645 | error ("Hardware breakpoints used exceeds limit."); | |
4646 | } | |
c906108c | 4647 | |
c3f6f71d JM |
4648 | /* Now set all the breakpoints. */ |
4649 | { | |
4650 | int i; | |
4651 | for (i = 0; i < sals.nelts; i++) | |
4652 | { | |
4653 | struct breakpoint *b; | |
4654 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4655 | |
c3f6f71d JM |
4656 | if (from_tty) |
4657 | describe_other_breakpoints (sal.pc, sal.section); | |
4658 | ||
4659 | b = set_raw_breakpoint (sal); | |
4660 | set_breakpoint_count (breakpoint_count + 1); | |
4661 | b->number = breakpoint_count; | |
4662 | b->type = type; | |
4663 | b->cond = cond[i]; | |
4664 | b->thread = thread; | |
4665 | b->addr_string = addr_string[i]; | |
4666 | b->cond_string = cond_string[i]; | |
4667 | b->ignore_count = ignore_count; | |
4668 | b->enable = enabled; | |
4669 | b->disposition = disposition; | |
4670 | mention (b); | |
4671 | } | |
4672 | } | |
4673 | } | |
c906108c | 4674 | |
c3f6f71d JM |
4675 | /* Parse ARG which is assumed to be a SAL specification possibly |
4676 | followed by conditionals. On return, SALS contains an array of SAL | |
4677 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4678 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4679 | |
c3f6f71d JM |
4680 | void |
4681 | parse_breakpoint_sals (char **address, | |
4682 | struct symtabs_and_lines *sals, | |
4683 | char ***addr_string) | |
4684 | { | |
4685 | char *addr_start = *address; | |
4686 | *addr_string = NULL; | |
4687 | /* If no arg given, or if first arg is 'if ', use the default | |
4688 | breakpoint. */ | |
4689 | if ((*address) == NULL | |
4690 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4691 | { |
4692 | if (default_breakpoint_valid) | |
4693 | { | |
c3f6f71d JM |
4694 | struct symtab_and_line sal; |
4695 | INIT_SAL (&sal); /* initialize to zeroes */ | |
4696 | sals->sals = (struct symtab_and_line *) | |
c906108c SS |
4697 | xmalloc (sizeof (struct symtab_and_line)); |
4698 | sal.pc = default_breakpoint_address; | |
4699 | sal.line = default_breakpoint_line; | |
4700 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4701 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4702 | sals->sals[0] = sal; |
4703 | sals->nelts = 1; | |
c906108c SS |
4704 | } |
4705 | else | |
4706 | error ("No default breakpoint address now."); | |
4707 | } | |
4708 | else | |
4709 | { | |
c906108c | 4710 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4711 | current_source_symtab (which is decode_line_1's default). This |
4712 | should produce the results we want almost all of the time while | |
4713 | leaving default_breakpoint_* alone. */ | |
c906108c SS |
4714 | if (default_breakpoint_valid |
4715 | && (!current_source_symtab | |
c3f6f71d JM |
4716 | || (strchr ("+-", (*address)[0]) != NULL))) |
4717 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, | |
4718 | default_breakpoint_line, addr_string); | |
c906108c | 4719 | else |
c3f6f71d | 4720 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); |
c906108c | 4721 | } |
c3f6f71d JM |
4722 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4723 | if (sals->nelts > 0 && *addr_string == NULL) | |
4724 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4725 | if (addr_start != (*address)) | |
c906108c | 4726 | { |
c3f6f71d JM |
4727 | int i; |
4728 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4729 | { |
c3f6f71d JM |
4730 | /* Add the string if not present. */ |
4731 | if ((*addr_string)[i] == NULL) | |
4732 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4733 | } |
4734 | } | |
c3f6f71d | 4735 | } |
c906108c | 4736 | |
c906108c | 4737 | |
c3f6f71d JM |
4738 | /* Convert each SAL into a real PC. Verify that the PC can be |
4739 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4740 | |
c3f6f71d JM |
4741 | void |
4742 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, | |
4743 | char *address) | |
4744 | { | |
4745 | int i; | |
4746 | for (i = 0; i < sals->nelts; i++) | |
4747 | { | |
4748 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4749 | |
4750 | /* It's possible for the PC to be nonzero, but still an illegal | |
4751 | value on some targets. | |
4752 | ||
4753 | For example, on HP-UX if you start gdb, and before running the | |
4754 | inferior you try to set a breakpoint on a shared library function | |
4755 | "foo" where the inferior doesn't call "foo" directly but does | |
4756 | pass its address to another function call, then we do find a | |
4757 | minimal symbol for the "foo", but it's address is invalid. | |
4758 | (Appears to be an index into a table that the loader sets up | |
4759 | when the inferior is run.) | |
4760 | ||
4761 | Give the target a chance to bless sals.sals[i].pc before we | |
4762 | try to make a breakpoint for it. */ | |
c3f6f71d | 4763 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4764 | { |
c3f6f71d JM |
4765 | if (address == NULL) |
4766 | error ("Cannot break without a running program."); | |
4767 | else | |
4768 | error ("Cannot break on %s without a running program.", | |
4769 | address); | |
c5aa993b | 4770 | } |
c3f6f71d JM |
4771 | } |
4772 | } | |
4773 | ||
4774 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4775 | flag: first bit : 0 non-temporary, 1 temporary. | |
4776 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4777 | |
c3f6f71d JM |
4778 | static void |
4779 | break_command_1 (arg, flag, from_tty) | |
4780 | char *arg; | |
4781 | int flag, from_tty; | |
4782 | { | |
4783 | int tempflag, hardwareflag; | |
4784 | struct symtabs_and_lines sals; | |
4785 | register struct expression **cond = 0; | |
4786 | /* Pointers in arg to the start, and one past the end, of the | |
4787 | condition. */ | |
4788 | char **cond_string = (char **) NULL; | |
4789 | char *addr_start = arg; | |
4790 | char **addr_string; | |
4791 | struct cleanup *old_chain; | |
4792 | struct cleanup *breakpoint_chain = NULL; | |
4793 | int i; | |
4794 | int thread = -1; | |
4795 | int ignore_count = 0; | |
4796 | ||
4797 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4798 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4799 | |
c3f6f71d JM |
4800 | sals.sals = NULL; |
4801 | sals.nelts = 0; | |
4802 | addr_string = NULL; | |
4803 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4804 | ||
4805 | if (!sals.nelts) | |
4806 | return; | |
4807 | ||
4808 | /* Create a chain of things that always need to be cleaned up. */ | |
4809 | old_chain = make_cleanup (null_cleanup, 0); | |
4810 | ||
4811 | /* Make sure that all storage allocated to SALS gets freed. */ | |
4812 | make_cleanup (free, sals.sals); | |
4813 | ||
4814 | /* Cleanup the addr_string array but not its contents. */ | |
4815 | make_cleanup (free, addr_string); | |
4816 | ||
4817 | /* Allocate space for all the cond expressions. */ | |
4818 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
4819 | make_cleanup (free, cond); | |
4820 | ||
4821 | /* Allocate space for all the cond strings. */ | |
4822 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
4823 | make_cleanup (free, cond_string); | |
4824 | ||
4825 | /* ----------------------------- SNIP ----------------------------- | |
4826 | Anything added to the cleanup chain beyond this point is assumed | |
4827 | to be part of a breakpoint. If the breakpoint create succeeds | |
4828 | then the memory is not reclaimed. */ | |
4829 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4830 | ||
4831 | /* Mark the contents of the addr_string for cleanup. These go on | |
4832 | the breakpoint_chain and only occure if the breakpoint create | |
4833 | fails. */ | |
4834 | for (i = 0; i < sals.nelts; i++) | |
4835 | { | |
4836 | if (addr_string[i] != NULL) | |
4837 | make_cleanup (free, addr_string[i]); | |
4838 | } | |
4839 | ||
4840 | /* Resolve all line numbers to PC's and verify that the addresses | |
4841 | are ok for the target. */ | |
4842 | breakpoint_sals_to_pc (&sals, addr_start); | |
4843 | ||
4844 | /* Verify that condition can be parsed, before setting any | |
4845 | breakpoints. Allocate a separate condition expression for each | |
4846 | breakpoint. */ | |
4847 | thread = -1; /* No specific thread yet */ | |
4848 | for (i = 0; i < sals.nelts; i++) | |
4849 | { | |
4850 | char *tok = arg; | |
c906108c SS |
4851 | while (tok && *tok) |
4852 | { | |
c3f6f71d JM |
4853 | char *end_tok; |
4854 | int toklen; | |
4855 | char *cond_start = NULL; | |
4856 | char *cond_end = NULL; | |
c906108c SS |
4857 | while (*tok == ' ' || *tok == '\t') |
4858 | tok++; | |
4859 | ||
4860 | end_tok = tok; | |
4861 | ||
4862 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4863 | end_tok++; | |
4864 | ||
4865 | toklen = end_tok - tok; | |
4866 | ||
4867 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4868 | { | |
4869 | tok = cond_start = end_tok + 1; | |
c3f6f71d JM |
4870 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
4871 | make_cleanup (free, cond[i]); | |
c906108c | 4872 | cond_end = tok; |
c3f6f71d JM |
4873 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
4874 | make_cleanup (free, cond_string[i]); | |
c906108c SS |
4875 | } |
4876 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4877 | { | |
4878 | char *tmptok; | |
4879 | ||
4880 | tok = end_tok + 1; | |
4881 | tmptok = tok; | |
4882 | thread = strtol (tok, &tok, 0); | |
4883 | if (tok == tmptok) | |
4884 | error ("Junk after thread keyword."); | |
4885 | if (!valid_thread_id (thread)) | |
4886 | error ("Unknown thread %d\n", thread); | |
4887 | } | |
4888 | else | |
4889 | error ("Junk at end of arguments."); | |
4890 | } | |
4891 | } | |
c906108c | 4892 | |
c3f6f71d JM |
4893 | create_breakpoints (sals, addr_string, cond, cond_string, |
4894 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4895 | tempflag ? del : donttouch, | |
4896 | thread, ignore_count, from_tty); | |
4897 | ||
4898 | if (sals.nelts > 1) | |
4899 | { | |
4900 | warning ("Multiple breakpoints were set."); | |
4901 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4902 | } |
c3f6f71d JM |
4903 | /* That's it. Discard the cleanups for data inserted into the |
4904 | breakpoint. */ | |
4905 | discard_cleanups (breakpoint_chain); | |
4906 | /* But cleanup everything else. */ | |
4907 | do_cleanups (old_chain); | |
4908 | } | |
c906108c | 4909 | |
c3f6f71d JM |
4910 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
4911 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 4912 | |
c3f6f71d JM |
4913 | struct captured_breakpoint_args |
4914 | { | |
4915 | char *address; | |
4916 | char *condition; | |
4917 | int hardwareflag; | |
4918 | int tempflag; | |
4919 | int thread; | |
4920 | int ignore_count; | |
4921 | }; | |
4922 | ||
4923 | static int | |
4924 | do_captured_breakpoint (void *data) | |
4925 | { | |
4926 | struct captured_breakpoint_args *args = data; | |
4927 | struct symtabs_and_lines sals; | |
4928 | register struct expression **cond; | |
4929 | struct cleanup *old_chain; | |
4930 | struct cleanup *breakpoint_chain = NULL; | |
4931 | int i; | |
4932 | char **addr_string; | |
4933 | char **cond_string; | |
4934 | ||
4935 | char *address_end; | |
4936 | ||
4937 | /* Parse the source and lines spec. Delay check that the expression | |
4938 | didn't contain trailing garbage until after cleanups are in | |
4939 | place. */ | |
4940 | sals.sals = NULL; | |
4941 | sals.nelts = 0; | |
4942 | address_end = args->address; | |
4943 | addr_string = NULL; | |
4944 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
4945 | ||
4946 | if (!sals.nelts) | |
4947 | return GDB_RC_NONE; | |
4948 | ||
4949 | /* Create a chain of things at always need to be cleaned up. */ | |
4950 | old_chain = make_cleanup (null_cleanup, 0); | |
4951 | ||
4952 | /* Always have a addr_string array, even if it is empty. */ | |
4953 | make_cleanup (free, addr_string); | |
4954 | ||
4955 | /* Make sure that all storage allocated to SALS gets freed. */ | |
4956 | make_cleanup (free, sals.sals); | |
4957 | ||
4958 | /* Allocate space for all the cond expressions. */ | |
4959 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
4960 | make_cleanup (free, cond); | |
4961 | ||
4962 | /* Allocate space for all the cond strings. */ | |
4963 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
4964 | make_cleanup (free, cond_string); | |
4965 | ||
4966 | /* ----------------------------- SNIP ----------------------------- | |
4967 | Anything added to the cleanup chain beyond this point is assumed | |
4968 | to be part of a breakpoint. If the breakpoint create goes | |
4969 | through then that memory is not cleaned up. */ | |
4970 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4971 | ||
4972 | /* Mark the contents of the addr_string for cleanup. These go on | |
4973 | the breakpoint_chain and only occure if the breakpoint create | |
4974 | fails. */ | |
c906108c SS |
4975 | for (i = 0; i < sals.nelts; i++) |
4976 | { | |
c3f6f71d JM |
4977 | if (addr_string[i] != NULL) |
4978 | make_cleanup (free, addr_string[i]); | |
c906108c SS |
4979 | } |
4980 | ||
c3f6f71d JM |
4981 | /* Wait until now before checking for garbage at the end of the |
4982 | address. That way cleanups can take care of freeing any | |
4983 | memory. */ | |
4984 | if (*address_end != '\0') | |
4985 | error ("Garbage %s following breakpoint address", address_end); | |
4986 | ||
4987 | /* Resolve all line numbers to PC's. */ | |
4988 | breakpoint_sals_to_pc (&sals, args->address); | |
4989 | ||
4990 | /* Verify that conditions can be parsed, before setting any | |
4991 | breakpoints. */ | |
4992 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 4993 | { |
c3f6f71d JM |
4994 | if (args->condition != NULL) |
4995 | { | |
4996 | char *tok = args->condition; | |
4997 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
4998 | if (*tok != '\0') | |
4999 | error ("Garbage %s follows condition", tok); | |
5000 | make_cleanup (free, cond[i]); | |
5001 | cond_string[i] = xstrdup (args->condition); | |
5002 | } | |
c906108c | 5003 | } |
c3f6f71d JM |
5004 | |
5005 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5006 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
5007 | args->tempflag ? del : donttouch, | |
5008 | args->thread, args->ignore_count, 0/*from-tty*/); | |
5009 | ||
5010 | /* That's it. Discard the cleanups for data inserted into the | |
5011 | breakpoint. */ | |
5012 | discard_cleanups (breakpoint_chain); | |
5013 | /* But cleanup everything else. */ | |
c906108c | 5014 | do_cleanups (old_chain); |
c3f6f71d | 5015 | return GDB_RC_OK; |
c906108c SS |
5016 | } |
5017 | ||
c3f6f71d JM |
5018 | enum gdb_rc |
5019 | gdb_breakpoint (char *address, char *condition, | |
5020 | int hardwareflag, int tempflag, | |
5021 | int thread, int ignore_count) | |
5022 | { | |
5023 | struct captured_breakpoint_args args; | |
5024 | args.address = address; | |
5025 | args.condition = condition; | |
5026 | args.hardwareflag = hardwareflag; | |
5027 | args.tempflag = tempflag; | |
5028 | args.thread = thread; | |
5029 | args.ignore_count = ignore_count; | |
5030 | return catch_errors (do_captured_breakpoint, &args, | |
5031 | NULL, RETURN_MASK_ALL); | |
5032 | } | |
5033 | ||
5034 | ||
c906108c SS |
5035 | static void |
5036 | break_at_finish_at_depth_command_1 (arg, flag, from_tty) | |
5037 | char *arg; | |
5038 | int flag; | |
5039 | int from_tty; | |
5040 | { | |
5041 | struct frame_info *frame; | |
5042 | CORE_ADDR low, high, selected_pc = 0; | |
5043 | char *extra_args, *level_arg, *addr_string; | |
5044 | int extra_args_len = 0, if_arg = 0; | |
5045 | ||
5046 | if (!arg || | |
5047 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5048 | { | |
5049 | ||
5050 | if (default_breakpoint_valid) | |
5051 | { | |
5052 | if (selected_frame) | |
5053 | { | |
5054 | selected_pc = selected_frame->pc; | |
5055 | if (arg) | |
5056 | if_arg = 1; | |
5057 | } | |
5058 | else | |
5059 | error ("No selected frame."); | |
5060 | } | |
5061 | else | |
5062 | error ("No default breakpoint address now."); | |
5063 | } | |
5064 | else | |
5065 | { | |
5066 | extra_args = strchr (arg, ' '); | |
5067 | if (extra_args) | |
5068 | { | |
5069 | extra_args++; | |
5070 | extra_args_len = strlen (extra_args); | |
5071 | level_arg = (char *) xmalloc (extra_args - arg); | |
5072 | strncpy (level_arg, arg, extra_args - arg - 1); | |
5073 | level_arg[extra_args - arg - 1] = '\0'; | |
5074 | } | |
5075 | else | |
5076 | { | |
5077 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
5078 | strcpy (level_arg, arg); | |
5079 | } | |
5080 | ||
5081 | frame = parse_frame_specification (level_arg); | |
5082 | if (frame) | |
5083 | selected_pc = frame->pc; | |
5084 | else | |
5085 | selected_pc = 0; | |
5086 | } | |
5087 | if (if_arg) | |
5088 | { | |
5089 | extra_args = arg; | |
c5aa993b | 5090 | extra_args_len = strlen (arg); |
c906108c SS |
5091 | } |
5092 | ||
5093 | if (selected_pc) | |
5094 | { | |
c5aa993b | 5095 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c SS |
5096 | { |
5097 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
5098 | if (extra_args_len) | |
d4f3574e | 5099 | sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5100 | else |
d4f3574e | 5101 | sprintf (addr_string, "*0x%s", paddr_nz (high)); |
c906108c SS |
5102 | break_command_1 (addr_string, flag, from_tty); |
5103 | free (addr_string); | |
5104 | } | |
5105 | else | |
5106 | error ("No function contains the specified address"); | |
5107 | } | |
5108 | else | |
5109 | error ("Unable to set breakpoint at procedure exit"); | |
5110 | } | |
5111 | ||
5112 | ||
5113 | static void | |
5114 | break_at_finish_command_1 (arg, flag, from_tty) | |
5115 | char *arg; | |
5116 | int flag; | |
5117 | int from_tty; | |
5118 | { | |
5119 | char *addr_string, *break_string, *beg_addr_string; | |
5120 | CORE_ADDR low, high; | |
5121 | struct symtabs_and_lines sals; | |
5122 | struct symtab_and_line sal; | |
5123 | struct cleanup *old_chain; | |
5124 | char *extra_args; | |
5125 | int extra_args_len = 0; | |
5126 | int i, if_arg = 0; | |
5127 | ||
5128 | if (!arg || | |
5129 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5130 | { | |
5131 | if (default_breakpoint_valid) | |
5132 | { | |
5133 | if (selected_frame) | |
5134 | { | |
5135 | addr_string = (char *) xmalloc (15); | |
d4f3574e | 5136 | sprintf (addr_string, "*0x%s", paddr_nz (selected_frame->pc)); |
c906108c SS |
5137 | if (arg) |
5138 | if_arg = 1; | |
5139 | } | |
5140 | else | |
5141 | error ("No selected frame."); | |
5142 | } | |
5143 | else | |
5144 | error ("No default breakpoint address now."); | |
5145 | } | |
5146 | else | |
5147 | { | |
5148 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5149 | strcpy (addr_string, arg); | |
5150 | } | |
5151 | ||
5152 | if (if_arg) | |
5153 | { | |
5154 | extra_args = arg; | |
c5aa993b JM |
5155 | extra_args_len = strlen (arg); |
5156 | } | |
5157 | else if (arg) | |
5158 | { | |
5159 | /* get the stuff after the function name or address */ | |
5160 | extra_args = strchr (arg, ' '); | |
5161 | if (extra_args) | |
5162 | { | |
5163 | extra_args++; | |
5164 | extra_args_len = strlen (extra_args); | |
5165 | } | |
c906108c | 5166 | } |
c906108c SS |
5167 | |
5168 | sals.sals = NULL; | |
5169 | sals.nelts = 0; | |
5170 | ||
c5aa993b JM |
5171 | beg_addr_string = addr_string; |
5172 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
5173 | (char ***) NULL); | |
c906108c SS |
5174 | |
5175 | free (beg_addr_string); | |
5176 | old_chain = make_cleanup (free, sals.sals); | |
5177 | for (i = 0; (i < sals.nelts); i++) | |
5178 | { | |
5179 | sal = sals.sals[i]; | |
c5aa993b | 5180 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c SS |
5181 | { |
5182 | break_string = (char *) xmalloc (extra_args_len + 26); | |
5183 | if (extra_args_len) | |
d4f3574e | 5184 | sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5185 | else |
d4f3574e | 5186 | sprintf (break_string, "*0x%s", paddr_nz (high)); |
c906108c | 5187 | break_command_1 (break_string, flag, from_tty); |
c5aa993b | 5188 | free (break_string); |
c906108c SS |
5189 | } |
5190 | else | |
5191 | error ("No function contains the specified address"); | |
5192 | } | |
5193 | if (sals.nelts > 1) | |
5194 | { | |
53a5351d JM |
5195 | warning ("Multiple breakpoints were set.\n"); |
5196 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5197 | } |
c5aa993b | 5198 | do_cleanups (old_chain); |
c906108c SS |
5199 | } |
5200 | ||
5201 | ||
5202 | /* Helper function for break_command_1 and disassemble_command. */ | |
5203 | ||
5204 | void | |
5205 | resolve_sal_pc (sal) | |
5206 | struct symtab_and_line *sal; | |
5207 | { | |
5208 | CORE_ADDR pc; | |
5209 | ||
5210 | if (sal->pc == 0 && sal->symtab != NULL) | |
5211 | { | |
5212 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5213 | error ("No line %d in file \"%s\".", | |
5214 | sal->line, sal->symtab->filename); | |
5215 | sal->pc = pc; | |
5216 | } | |
5217 | ||
5218 | if (sal->section == 0 && sal->symtab != NULL) | |
5219 | { | |
5220 | struct blockvector *bv; | |
c5aa993b JM |
5221 | struct block *b; |
5222 | struct symbol *sym; | |
5223 | int index; | |
c906108c | 5224 | |
c5aa993b | 5225 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5226 | if (bv != NULL) |
5227 | { | |
c5aa993b | 5228 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5229 | sym = block_function (b); |
5230 | if (sym != NULL) | |
5231 | { | |
5232 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5233 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5234 | } | |
5235 | else | |
5236 | { | |
5237 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5238 | have to look harder. This case can be executed if we have |
5239 | line numbers but no functions (as can happen in assembly | |
5240 | source). */ | |
c906108c | 5241 | |
c5aa993b | 5242 | struct minimal_symbol *msym; |
c906108c SS |
5243 | |
5244 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5245 | if (msym) | |
5246 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5247 | } | |
5248 | } | |
5249 | } | |
5250 | } | |
5251 | ||
5252 | void | |
5253 | break_command (arg, from_tty) | |
5254 | char *arg; | |
5255 | int from_tty; | |
5256 | { | |
5257 | break_command_1 (arg, 0, from_tty); | |
5258 | } | |
5259 | ||
7a292a7a | 5260 | static void |
c906108c SS |
5261 | break_at_finish_command (arg, from_tty) |
5262 | char *arg; | |
5263 | int from_tty; | |
5264 | { | |
5265 | break_at_finish_command_1 (arg, 0, from_tty); | |
5266 | } | |
5267 | ||
7a292a7a | 5268 | static void |
c906108c SS |
5269 | break_at_finish_at_depth_command (arg, from_tty) |
5270 | char *arg; | |
5271 | int from_tty; | |
5272 | { | |
5273 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5274 | } | |
5275 | ||
5276 | void | |
5277 | tbreak_command (arg, from_tty) | |
5278 | char *arg; | |
5279 | int from_tty; | |
5280 | { | |
5281 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5282 | } | |
5283 | ||
7a292a7a | 5284 | static void |
c906108c SS |
5285 | tbreak_at_finish_command (arg, from_tty) |
5286 | char *arg; | |
5287 | int from_tty; | |
5288 | { | |
5289 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5290 | } | |
5291 | ||
5292 | static void | |
5293 | hbreak_command (arg, from_tty) | |
5294 | char *arg; | |
5295 | int from_tty; | |
5296 | { | |
5297 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
5298 | } | |
5299 | ||
5300 | static void | |
5301 | thbreak_command (arg, from_tty) | |
5302 | char *arg; | |
5303 | int from_tty; | |
5304 | { | |
5305 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
5306 | } | |
5307 | ||
5308 | static void | |
5309 | stop_command (arg, from_tty) | |
5310 | char *arg; | |
5311 | int from_tty; | |
5312 | { | |
5313 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5314 | Usage: stop in <function | address>\n\ | |
5315 | stop at <line>\n"); | |
5316 | } | |
5317 | ||
5318 | static void | |
5319 | stopin_command (arg, from_tty) | |
5320 | char *arg; | |
5321 | int from_tty; | |
5322 | { | |
5323 | int badInput = 0; | |
5324 | ||
c5aa993b | 5325 | if (arg == (char *) NULL) |
c906108c SS |
5326 | badInput = 1; |
5327 | else if (*arg != '*') | |
5328 | { | |
5329 | char *argptr = arg; | |
5330 | int hasColon = 0; | |
5331 | ||
53a5351d JM |
5332 | /* look for a ':'. If this is a line number specification, then |
5333 | say it is bad, otherwise, it should be an address or | |
5334 | function/method name */ | |
c906108c | 5335 | while (*argptr && !hasColon) |
c5aa993b JM |
5336 | { |
5337 | hasColon = (*argptr == ':'); | |
5338 | argptr++; | |
5339 | } | |
c906108c SS |
5340 | |
5341 | if (hasColon) | |
c5aa993b | 5342 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5343 | else |
c5aa993b | 5344 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5345 | } |
5346 | ||
5347 | if (badInput) | |
c5aa993b | 5348 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
5349 | else |
5350 | break_command_1 (arg, 0, from_tty); | |
5351 | } | |
5352 | ||
5353 | static void | |
5354 | stopat_command (arg, from_tty) | |
5355 | char *arg; | |
5356 | int from_tty; | |
5357 | { | |
5358 | int badInput = 0; | |
5359 | ||
c5aa993b | 5360 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5361 | badInput = 1; |
5362 | else | |
5363 | { | |
5364 | char *argptr = arg; | |
5365 | int hasColon = 0; | |
5366 | ||
5367 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5368 | it is probably a line number. */ |
c906108c | 5369 | while (*argptr && !hasColon) |
c5aa993b JM |
5370 | { |
5371 | hasColon = (*argptr == ':'); | |
5372 | argptr++; | |
5373 | } | |
c906108c SS |
5374 | |
5375 | if (hasColon) | |
c5aa993b | 5376 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5377 | else |
c5aa993b | 5378 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5379 | } |
5380 | ||
5381 | if (badInput) | |
c5aa993b | 5382 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
5383 | else |
5384 | break_command_1 (arg, 0, from_tty); | |
5385 | } | |
5386 | ||
5387 | /* ARGSUSED */ | |
53a5351d JM |
5388 | /* accessflag: hw_write: watch write, |
5389 | hw_read: watch read, | |
5390 | hw_access: watch access (read or write) */ | |
c906108c SS |
5391 | static void |
5392 | watch_command_1 (arg, accessflag, from_tty) | |
5393 | char *arg; | |
5394 | int accessflag; | |
5395 | int from_tty; | |
5396 | { | |
5397 | struct breakpoint *b; | |
5398 | struct symtab_and_line sal; | |
5399 | struct expression *exp; | |
5400 | struct block *exp_valid_block; | |
5401 | struct value *val, *mark; | |
5402 | struct frame_info *frame; | |
5403 | struct frame_info *prev_frame = NULL; | |
5404 | char *exp_start = NULL; | |
5405 | char *exp_end = NULL; | |
5406 | char *tok, *end_tok; | |
5407 | int toklen; | |
5408 | char *cond_start = NULL; | |
5409 | char *cond_end = NULL; | |
5410 | struct expression *cond = NULL; | |
5411 | int i, other_type_used, target_resources_ok = 0; | |
5412 | enum bptype bp_type; | |
5413 | int mem_cnt = 0; | |
5414 | ||
c5aa993b JM |
5415 | INIT_SAL (&sal); /* initialize to zeroes */ |
5416 | ||
c906108c SS |
5417 | /* Parse arguments. */ |
5418 | innermost_block = NULL; | |
5419 | exp_start = arg; | |
5420 | exp = parse_exp_1 (&arg, 0, 0); | |
5421 | exp_end = arg; | |
5422 | exp_valid_block = innermost_block; | |
5423 | mark = value_mark (); | |
5424 | val = evaluate_expression (exp); | |
5425 | release_value (val); | |
5426 | if (VALUE_LAZY (val)) | |
5427 | value_fetch_lazy (val); | |
5428 | ||
5429 | tok = arg; | |
5430 | while (*tok == ' ' || *tok == '\t') | |
5431 | tok++; | |
5432 | end_tok = tok; | |
5433 | ||
5434 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5435 | end_tok++; | |
5436 | ||
5437 | toklen = end_tok - tok; | |
5438 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5439 | { | |
5440 | tok = cond_start = end_tok + 1; | |
5441 | cond = parse_exp_1 (&tok, 0, 0); | |
5442 | cond_end = tok; | |
5443 | } | |
5444 | if (*tok) | |
c5aa993b | 5445 | error ("Junk at end of command."); |
c906108c | 5446 | |
53a5351d | 5447 | if (accessflag == hw_read) |
c5aa993b | 5448 | bp_type = bp_read_watchpoint; |
53a5351d | 5449 | else if (accessflag == hw_access) |
c5aa993b JM |
5450 | bp_type = bp_access_watchpoint; |
5451 | else | |
5452 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5453 | |
5454 | mem_cnt = can_use_hardware_watchpoint (val); | |
5455 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5456 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5457 | if (mem_cnt != 0) |
5458 | { | |
5459 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5460 | target_resources_ok = |
5461 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5462 | other_type_used); | |
c5aa993b | 5463 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5464 | error ("Target does not support this type of hardware watchpoint."); |
5465 | ||
c5aa993b | 5466 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5467 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5468 | } |
c906108c SS |
5469 | |
5470 | #if defined(HPUXHPPA) | |
c5aa993b | 5471 | /* On HP-UX if you set a h/w |
c906108c SS |
5472 | watchpoint before the "run" command, the inferior dies with a e.g., |
5473 | SIGILL once you start it. I initially believed this was due to a | |
5474 | bad interaction between page protection traps and the initial | |
5475 | startup sequence by the dynamic linker. | |
5476 | ||
5477 | However, I tried avoiding that by having HP-UX's implementation of | |
5478 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid | |
5479 | yet, which forced slow watches before a "run" or "attach", and it | |
5480 | still fails somewhere in the startup code. | |
5481 | ||
5482 | Until I figure out what's happening, I'm disallowing watches altogether | |
5483 | before the "run" or "attach" command. We'll tell the user they must | |
5484 | set watches after getting the program started. */ | |
c5aa993b | 5485 | if (!target_has_execution) |
c906108c SS |
5486 | { |
5487 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5488 | return; | |
5489 | } | |
5490 | #endif /* HPUXHPPA */ | |
c5aa993b | 5491 | |
c906108c SS |
5492 | /* Now set up the breakpoint. */ |
5493 | b = set_raw_breakpoint (sal); | |
5494 | set_breakpoint_count (breakpoint_count + 1); | |
5495 | b->number = breakpoint_count; | |
5496 | b->disposition = donttouch; | |
5497 | b->exp = exp; | |
5498 | b->exp_valid_block = exp_valid_block; | |
5499 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5500 | b->val = val; | |
5501 | b->cond = cond; | |
5502 | if (cond_start) | |
5503 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5504 | else | |
5505 | b->cond_string = 0; | |
c5aa993b | 5506 | |
c906108c SS |
5507 | frame = block_innermost_frame (exp_valid_block); |
5508 | if (frame) | |
5509 | { | |
5510 | prev_frame = get_prev_frame (frame); | |
5511 | b->watchpoint_frame = frame->frame; | |
5512 | } | |
5513 | else | |
c5aa993b | 5514 | b->watchpoint_frame = (CORE_ADDR) 0; |
c906108c SS |
5515 | |
5516 | if (mem_cnt && target_resources_ok > 0) | |
5517 | b->type = bp_type; | |
5518 | else | |
5519 | b->type = bp_watchpoint; | |
5520 | ||
5521 | /* If the expression is "local", then set up a "watchpoint scope" | |
5522 | breakpoint at the point where we've left the scope of the watchpoint | |
5523 | expression. */ | |
5524 | if (innermost_block) | |
5525 | { | |
5526 | if (prev_frame) | |
5527 | { | |
5528 | struct breakpoint *scope_breakpoint; | |
5529 | struct symtab_and_line scope_sal; | |
5530 | ||
5531 | INIT_SAL (&scope_sal); /* initialize to zeroes */ | |
c5aa993b | 5532 | scope_sal.pc = get_frame_pc (prev_frame); |
c906108c SS |
5533 | scope_sal.section = find_pc_overlay (scope_sal.pc); |
5534 | ||
5535 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
5536 | set_breakpoint_count (breakpoint_count + 1); | |
5537 | scope_breakpoint->number = breakpoint_count; | |
5538 | ||
5539 | scope_breakpoint->type = bp_watchpoint_scope; | |
5540 | scope_breakpoint->enable = enabled; | |
5541 | ||
5542 | /* Automatically delete the breakpoint when it hits. */ | |
5543 | scope_breakpoint->disposition = del; | |
5544 | ||
5545 | /* Only break in the proper frame (help with recursion). */ | |
5546 | scope_breakpoint->frame = prev_frame->frame; | |
5547 | ||
5548 | /* Set the address at which we will stop. */ | |
5549 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
5550 | ||
5551 | /* The scope breakpoint is related to the watchpoint. We | |
5552 | will need to act on them together. */ | |
5553 | b->related_breakpoint = scope_breakpoint; | |
5554 | } | |
5555 | } | |
5556 | value_free_to_mark (mark); | |
5557 | mention (b); | |
5558 | } | |
5559 | ||
5560 | /* Return count of locations need to be watched and can be handled | |
5561 | in hardware. If the watchpoint can not be handled | |
5562 | in hardware return zero. */ | |
5563 | ||
5564 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d JM |
5565 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
5566 | ((BYTE_SIZE) <= (REGISTER_SIZE)) | |
5567 | #endif | |
5568 | ||
5569 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5570 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
5571 | TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN) | |
c906108c SS |
5572 | #endif |
5573 | ||
5574 | static int | |
5575 | can_use_hardware_watchpoint (v) | |
5576 | struct value *v; | |
5577 | { | |
5578 | int found_memory_cnt = 0; | |
2e70b7b9 | 5579 | struct value *head = v; |
c906108c SS |
5580 | |
5581 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5582 | if (!can_use_hw_watchpoints) |
c906108c | 5583 | return 0; |
c5aa993b | 5584 | |
5c44784c JM |
5585 | /* Make sure that the value of the expression depends only upon |
5586 | memory contents, and values computed from them within GDB. If we | |
5587 | find any register references or function calls, we can't use a | |
5588 | hardware watchpoint. | |
5589 | ||
5590 | The idea here is that evaluating an expression generates a series | |
5591 | of values, one holding the value of every subexpression. (The | |
5592 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5593 | a*b+c.) GDB's values hold almost enough information to establish | |
5594 | the criteria given above --- they identify memory lvalues, | |
5595 | register lvalues, computed values, etcetera. So we can evaluate | |
5596 | the expression, and then scan the chain of values that leaves | |
5597 | behind to decide whether we can detect any possible change to the | |
5598 | expression's final value using only hardware watchpoints. | |
5599 | ||
5600 | However, I don't think that the values returned by inferior | |
5601 | function calls are special in any way. So this function may not | |
5602 | notice that an expression involving an inferior function call | |
5603 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5604 | for (; v; v = v->next) |
c906108c | 5605 | { |
5c44784c | 5606 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5607 | { |
5c44784c JM |
5608 | if (VALUE_LAZY (v)) |
5609 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5610 | we either just used its address (e.g., `a' in `a.b') or | |
5611 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5612 | ; | |
53a5351d | 5613 | else |
5c44784c JM |
5614 | { |
5615 | /* Ahh, memory we actually used! Check if we can cover | |
5616 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5617 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5618 | ||
5619 | /* We only watch structs and arrays if user asked for it | |
5620 | explicitly, never if they just happen to appear in a | |
5621 | middle of some value chain. */ | |
5622 | if (v == head | |
5623 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5624 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5625 | { | |
5626 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5627 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5628 | ||
5629 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5630 | return 0; | |
5631 | else | |
5632 | found_memory_cnt++; | |
5633 | } | |
5c44784c | 5634 | } |
c5aa993b | 5635 | } |
c906108c | 5636 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5637 | return 0; /* ??? What does this represent? */ |
5638 | else if (v->lval == lval_register) | |
5639 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5640 | } |
5641 | ||
5642 | /* The expression itself looks suitable for using a hardware | |
5643 | watchpoint, but give the target machine a chance to reject it. */ | |
5644 | return found_memory_cnt; | |
5645 | } | |
5646 | ||
8b93c638 JM |
5647 | #ifdef UI_OUT |
5648 | void | |
5649 | watch_command_wrapper (arg, from_tty) | |
5650 | char *arg; | |
5651 | int from_tty; | |
5652 | { | |
5653 | watch_command (arg, from_tty); | |
5654 | } | |
5655 | #endif | |
c5aa993b JM |
5656 | static void |
5657 | watch_command (arg, from_tty) | |
c906108c SS |
5658 | char *arg; |
5659 | int from_tty; | |
5660 | { | |
53a5351d | 5661 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5662 | } |
5663 | ||
8b93c638 JM |
5664 | #ifdef UI_OUT |
5665 | void | |
5666 | rwatch_command_wrapper (arg, from_tty) | |
5667 | char *arg; | |
5668 | int from_tty; | |
5669 | { | |
5670 | rwatch_command (arg, from_tty); | |
5671 | } | |
5672 | #endif | |
c5aa993b JM |
5673 | static void |
5674 | rwatch_command (arg, from_tty) | |
c906108c SS |
5675 | char *arg; |
5676 | int from_tty; | |
5677 | { | |
53a5351d | 5678 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5679 | } |
5680 | ||
8b93c638 JM |
5681 | #ifdef UI_OUT |
5682 | void | |
5683 | awatch_command_wrapper (arg, from_tty) | |
5684 | char *arg; | |
5685 | int from_tty; | |
5686 | { | |
5687 | awatch_command (arg, from_tty); | |
5688 | } | |
5689 | #endif | |
c5aa993b JM |
5690 | static void |
5691 | awatch_command (arg, from_tty) | |
c906108c SS |
5692 | char *arg; |
5693 | int from_tty; | |
5694 | { | |
53a5351d | 5695 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5696 | } |
c906108c | 5697 | \f |
c5aa993b | 5698 | |
43ff13b4 | 5699 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5700 | because it uses the mechanisms of breakpoints. */ |
5701 | ||
43ff13b4 JM |
5702 | /* This function is called by fetch_inferior_event via the |
5703 | cmd_continuation pointer, to complete the until command. It takes | |
5704 | care of cleaning up the temporary breakpoints set up by the until | |
5705 | command. */ | |
c2c6d25f JM |
5706 | static void |
5707 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5708 | { |
0d06e24b JM |
5709 | struct cleanup *cleanups; |
5710 | ||
57e687d9 | 5711 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5712 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5713 | } |
5714 | ||
c906108c SS |
5715 | /* ARGSUSED */ |
5716 | void | |
5717 | until_break_command (arg, from_tty) | |
5718 | char *arg; | |
5719 | int from_tty; | |
5720 | { | |
5721 | struct symtabs_and_lines sals; | |
5722 | struct symtab_and_line sal; | |
5723 | struct frame_info *prev_frame = get_prev_frame (selected_frame); | |
5724 | struct breakpoint *breakpoint; | |
5725 | struct cleanup *old_chain; | |
0d06e24b JM |
5726 | struct continuation_arg *arg1; |
5727 | ||
c906108c SS |
5728 | |
5729 | clear_proceed_status (); | |
5730 | ||
5731 | /* Set a breakpoint where the user wants it and at return from | |
5732 | this function */ | |
c5aa993b | 5733 | |
c906108c SS |
5734 | if (default_breakpoint_valid) |
5735 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 5736 | default_breakpoint_line, (char ***) NULL); |
c906108c | 5737 | else |
53a5351d JM |
5738 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
5739 | 0, (char ***) NULL); | |
c5aa993b | 5740 | |
c906108c SS |
5741 | if (sals.nelts != 1) |
5742 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5743 | |
c906108c | 5744 | sal = sals.sals[0]; |
c5aa993b JM |
5745 | free ((PTR) sals.sals); /* malloc'd, so freed */ |
5746 | ||
c906108c SS |
5747 | if (*arg) |
5748 | error ("Junk at end of arguments."); | |
c5aa993b | 5749 | |
c906108c | 5750 | resolve_sal_pc (&sal); |
c5aa993b | 5751 | |
c906108c | 5752 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
c5aa993b | 5753 | |
6426a772 | 5754 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5755 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5756 | else |
4d6140d9 | 5757 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5758 | |
5759 | /* If we are running asynchronously, and the target supports async | |
5760 | execution, we are not waiting for the target to stop, in the call | |
5761 | tp proceed, below. This means that we cannot delete the | |
5762 | brekpoints until the target has actually stopped. The only place | |
5763 | where we get a chance to do that is in fetch_inferior_event, so | |
5764 | we must set things up for that. */ | |
5765 | ||
6426a772 | 5766 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 5767 | { |
0d06e24b JM |
5768 | /* In this case the arg for the continuation is just the point |
5769 | in the exec_cleanups chain from where to start doing | |
5770 | cleanups, because all the continuation does is the cleanups in | |
5771 | the exec_cleanup_chain. */ | |
5772 | arg1 = | |
5773 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5774 | arg1->next = NULL; |
5775 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5776 | |
5777 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5778 | } |
c906108c SS |
5779 | |
5780 | /* Keep within the current frame */ | |
c5aa993b | 5781 | |
c906108c SS |
5782 | if (prev_frame) |
5783 | { | |
5784 | sal = find_pc_line (prev_frame->pc, 0); | |
5785 | sal.pc = prev_frame->pc; | |
5786 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); | |
6426a772 | 5787 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5788 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5789 | else |
4d6140d9 | 5790 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5791 | } |
c5aa993b | 5792 | |
c906108c | 5793 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5794 | /* Do the cleanups now, anly if we are not running asynchronously, |
5795 | of if we are, but the target is still synchronous. */ | |
6426a772 | 5796 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 5797 | do_cleanups (old_chain); |
c906108c SS |
5798 | } |
5799 | \f | |
5800 | #if 0 | |
5801 | /* These aren't used; I don't konw what they were for. */ | |
5802 | /* Set a breakpoint at the catch clause for NAME. */ | |
5803 | static int | |
5804 | catch_breakpoint (name) | |
5805 | char *name; | |
5806 | { | |
5807 | } | |
5808 | ||
5809 | static int | |
5810 | disable_catch_breakpoint () | |
5811 | { | |
5812 | } | |
5813 | ||
5814 | static int | |
5815 | delete_catch_breakpoint () | |
5816 | { | |
5817 | } | |
5818 | ||
5819 | static int | |
5820 | enable_catch_breakpoint () | |
5821 | { | |
5822 | } | |
5823 | #endif /* 0 */ | |
5824 | ||
5825 | struct sal_chain | |
5826 | { | |
5827 | struct sal_chain *next; | |
5828 | struct symtab_and_line sal; | |
5829 | }; | |
5830 | ||
7a292a7a | 5831 | #if 0 |
c906108c SS |
5832 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
5833 | had been commented out in the v.4.16 sources, and stays | |
5834 | disabled there now because "catch NAME" syntax isn't allowed. | |
5835 | pai/1997-07-11 */ | |
5836 | /* This isn't used; I don't know what it was for. */ | |
5837 | /* For each catch clause identified in ARGS, run FUNCTION | |
5838 | with that clause as an argument. */ | |
5839 | static struct symtabs_and_lines | |
5840 | map_catch_names (args, function) | |
5841 | char *args; | |
c5aa993b | 5842 | int (*function) (); |
c906108c SS |
5843 | { |
5844 | register char *p = args; | |
5845 | register char *p1; | |
5846 | struct symtabs_and_lines sals; | |
5847 | #if 0 | |
5848 | struct sal_chain *sal_chain = 0; | |
5849 | #endif | |
5850 | ||
5851 | if (p == 0) | |
5852 | error_no_arg ("one or more catch names"); | |
5853 | ||
5854 | sals.nelts = 0; | |
5855 | sals.sals = NULL; | |
5856 | ||
5857 | while (*p) | |
5858 | { | |
5859 | p1 = p; | |
5860 | /* Don't swallow conditional part. */ | |
5861 | if (p1[0] == 'i' && p1[1] == 'f' | |
5862 | && (p1[2] == ' ' || p1[2] == '\t')) | |
5863 | break; | |
5864 | ||
5865 | if (isalpha (*p1)) | |
5866 | { | |
5867 | p1++; | |
5868 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
5869 | p1++; | |
5870 | } | |
5871 | ||
5872 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
5873 | error ("Arguments must be catch names."); | |
5874 | ||
5875 | *p1 = 0; | |
5876 | #if 0 | |
5877 | if (function (p)) | |
5878 | { | |
5879 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5880 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
5881 | next->next = sal_chain; |
5882 | next->sal = get_catch_sal (p); | |
5883 | sal_chain = next; | |
5884 | goto win; | |
5885 | } | |
5886 | #endif | |
5887 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
5888 | #if 0 | |
5889 | win: | |
5890 | #endif | |
5891 | p = p1; | |
c5aa993b JM |
5892 | while (*p == ' ' || *p == '\t') |
5893 | p++; | |
c906108c SS |
5894 | } |
5895 | } | |
7a292a7a | 5896 | #endif |
c906108c SS |
5897 | |
5898 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
5899 | ||
5900 | static struct symtabs_and_lines | |
5901 | get_catch_sals (this_level_only) | |
5902 | int this_level_only; | |
5903 | { | |
5904 | register struct blockvector *bl; | |
5905 | register struct block *block; | |
5906 | int index, have_default = 0; | |
5907 | CORE_ADDR pc; | |
5908 | struct symtabs_and_lines sals; | |
5909 | struct sal_chain *sal_chain = 0; | |
5910 | char *blocks_searched; | |
5911 | ||
5912 | /* Not sure whether an error message is always the correct response, | |
5913 | but it's better than a core dump. */ | |
5914 | if (selected_frame == NULL) | |
5915 | error ("No selected frame."); | |
5916 | block = get_frame_block (selected_frame); | |
5917 | pc = selected_frame->pc; | |
5918 | ||
5919 | sals.nelts = 0; | |
5920 | sals.sals = NULL; | |
5921 | ||
5922 | if (block == 0) | |
5923 | error ("No symbol table info available.\n"); | |
5924 | ||
5925 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
5926 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5927 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5928 | ||
5929 | while (block != 0) | |
5930 | { | |
5931 | CORE_ADDR end = BLOCK_END (block) - 4; | |
5932 | int last_index; | |
5933 | ||
5934 | if (bl != blockvector_for_pc (end, &index)) | |
5935 | error ("blockvector blotch"); | |
5936 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
5937 | error ("blockvector botch"); | |
5938 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
5939 | index += 1; | |
5940 | ||
5941 | /* Don't print out blocks that have gone by. */ | |
5942 | while (index < last_index | |
5943 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
5944 | index++; | |
5945 | ||
5946 | while (index < last_index | |
5947 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
5948 | { | |
5949 | if (blocks_searched[index] == 0) | |
5950 | { | |
5951 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
5952 | int nsyms; | |
5953 | register int i; | |
5954 | register struct symbol *sym; | |
5955 | ||
5956 | nsyms = BLOCK_NSYMS (b); | |
5957 | ||
5958 | for (i = 0; i < nsyms; i++) | |
5959 | { | |
5960 | sym = BLOCK_SYM (b, i); | |
5961 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
5962 | { | |
5963 | if (have_default) | |
5964 | continue; | |
5965 | have_default = 1; | |
5966 | } | |
5967 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
5968 | { | |
5969 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5970 | alloca (sizeof (struct sal_chain)); |
c906108c | 5971 | next->next = sal_chain; |
53a5351d JM |
5972 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
5973 | 0); | |
c906108c SS |
5974 | sal_chain = next; |
5975 | } | |
5976 | } | |
5977 | blocks_searched[index] = 1; | |
5978 | } | |
5979 | index++; | |
5980 | } | |
5981 | if (have_default) | |
5982 | break; | |
5983 | if (sal_chain && this_level_only) | |
5984 | break; | |
5985 | ||
5986 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
5987 | Don't continue to its superblock, the block of |
5988 | per-file symbols. */ | |
c906108c SS |
5989 | if (BLOCK_FUNCTION (block)) |
5990 | break; | |
5991 | block = BLOCK_SUPERBLOCK (block); | |
5992 | } | |
5993 | ||
5994 | if (sal_chain) | |
5995 | { | |
5996 | struct sal_chain *tmp_chain; | |
5997 | ||
5998 | /* Count the number of entries. */ | |
5999 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
6000 | tmp_chain = tmp_chain->next) | |
6001 | index++; | |
6002 | ||
6003 | sals.nelts = index; | |
6004 | sals.sals = (struct symtab_and_line *) | |
6005 | xmalloc (index * sizeof (struct symtab_and_line)); | |
6006 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
6007 | sals.sals[index] = sal_chain->sal; | |
6008 | } | |
6009 | ||
6010 | return sals; | |
6011 | } | |
6012 | ||
6013 | static void | |
6014 | ep_skip_leading_whitespace (s) | |
7a292a7a | 6015 | char **s; |
c906108c | 6016 | { |
c5aa993b JM |
6017 | if ((s == NULL) || (*s == NULL)) |
6018 | return; | |
6019 | while (isspace (**s)) | |
6020 | *s += 1; | |
c906108c | 6021 | } |
c5aa993b | 6022 | |
c906108c SS |
6023 | /* This function examines a string, and attempts to find a token |
6024 | that might be an event name in the leading characters. If a | |
6025 | possible match is found, a pointer to the last character of | |
6026 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6027 | |
c906108c SS |
6028 | static char * |
6029 | ep_find_event_name_end (arg) | |
7a292a7a | 6030 | char *arg; |
c906108c | 6031 | { |
c5aa993b JM |
6032 | char *s = arg; |
6033 | char *event_name_end = NULL; | |
6034 | ||
c906108c SS |
6035 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6036 | if (arg == NULL) | |
6037 | return NULL; | |
c5aa993b | 6038 | |
c906108c | 6039 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6040 | Basically, we're looking for alphanumerics and underscores; |
6041 | anything else delimites the token. */ | |
c906108c SS |
6042 | while (*s != '\0') |
6043 | { | |
c5aa993b JM |
6044 | if (!isalnum (*s) && (*s != '_')) |
6045 | break; | |
c906108c SS |
6046 | event_name_end = s; |
6047 | s++; | |
6048 | } | |
c5aa993b | 6049 | |
c906108c SS |
6050 | return event_name_end; |
6051 | } | |
6052 | ||
c5aa993b | 6053 | |
c906108c SS |
6054 | /* This function attempts to parse an optional "if <cond>" clause |
6055 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6056 | |
c906108c SS |
6057 | Else, it returns a pointer to the condition string. (It does not |
6058 | attempt to evaluate the string against a particular block.) And, | |
6059 | it updates arg to point to the first character following the parsed | |
6060 | if clause in the arg string. */ | |
53a5351d | 6061 | |
c906108c SS |
6062 | static char * |
6063 | ep_parse_optional_if_clause (arg) | |
7a292a7a | 6064 | char **arg; |
c906108c | 6065 | { |
c5aa993b JM |
6066 | char *cond_string; |
6067 | ||
6068 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6069 | return NULL; |
c5aa993b | 6070 | |
c906108c SS |
6071 | /* Skip the "if" keyword. */ |
6072 | (*arg) += 2; | |
c5aa993b | 6073 | |
c906108c SS |
6074 | /* Skip any extra leading whitespace, and record the start of the |
6075 | condition string. */ | |
6076 | ep_skip_leading_whitespace (arg); | |
6077 | cond_string = *arg; | |
c5aa993b | 6078 | |
c906108c SS |
6079 | /* Assume that the condition occupies the remainder of the arg string. */ |
6080 | (*arg) += strlen (cond_string); | |
c5aa993b | 6081 | |
c906108c SS |
6082 | return cond_string; |
6083 | } | |
c5aa993b | 6084 | |
c906108c SS |
6085 | /* This function attempts to parse an optional filename from the arg |
6086 | string. If one is not found, it returns NULL. | |
c5aa993b | 6087 | |
c906108c SS |
6088 | Else, it returns a pointer to the parsed filename. (This function |
6089 | makes no attempt to verify that a file of that name exists, or is | |
6090 | accessible.) And, it updates arg to point to the first character | |
6091 | following the parsed filename in the arg string. | |
c5aa993b | 6092 | |
c906108c SS |
6093 | Note that clients needing to preserve the returned filename for |
6094 | future access should copy it to their own buffers. */ | |
6095 | static char * | |
6096 | ep_parse_optional_filename (arg) | |
7a292a7a | 6097 | char **arg; |
c906108c | 6098 | { |
c5aa993b JM |
6099 | static char filename[1024]; |
6100 | char *arg_p = *arg; | |
6101 | int i; | |
6102 | char c; | |
6103 | ||
c906108c SS |
6104 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6105 | return NULL; | |
c5aa993b JM |
6106 | |
6107 | for (i = 0;; i++) | |
c906108c SS |
6108 | { |
6109 | c = *arg_p; | |
6110 | if (isspace (c)) | |
c5aa993b | 6111 | c = '\0'; |
c906108c SS |
6112 | filename[i] = c; |
6113 | if (c == '\0') | |
c5aa993b | 6114 | break; |
c906108c SS |
6115 | arg_p++; |
6116 | } | |
6117 | *arg = arg_p; | |
c5aa993b | 6118 | |
c906108c SS |
6119 | return filename; |
6120 | } | |
c5aa993b | 6121 | |
c906108c SS |
6122 | /* Commands to deal with catching events, such as signals, exceptions, |
6123 | process start/exit, etc. */ | |
c5aa993b JM |
6124 | |
6125 | typedef enum | |
6126 | { | |
6127 | catch_fork, catch_vfork | |
6128 | } | |
6129 | catch_fork_kind; | |
6130 | ||
e514a9d6 | 6131 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
53a5351d JM |
6132 | static void catch_fork_command_1 PARAMS ((catch_fork_kind fork_kind, |
6133 | char *arg, | |
6134 | int tempflag, | |
6135 | int from_tty)); | |
7a292a7a | 6136 | |
c906108c SS |
6137 | static void |
6138 | catch_fork_command_1 (fork_kind, arg, tempflag, from_tty) | |
7a292a7a SS |
6139 | catch_fork_kind fork_kind; |
6140 | char *arg; | |
6141 | int tempflag; | |
6142 | int from_tty; | |
c906108c | 6143 | { |
c5aa993b JM |
6144 | char *cond_string = NULL; |
6145 | ||
c906108c | 6146 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6147 | |
c906108c | 6148 | /* The allowed syntax is: |
c5aa993b JM |
6149 | catch [v]fork |
6150 | catch [v]fork if <cond> | |
6151 | ||
c906108c SS |
6152 | First, check if there's an if clause. */ |
6153 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6154 | |
c906108c SS |
6155 | if ((*arg != '\0') && !isspace (*arg)) |
6156 | error ("Junk at end of arguments."); | |
c5aa993b | 6157 | |
c906108c SS |
6158 | /* If this target supports it, create a fork or vfork catchpoint |
6159 | and enable reporting of such events. */ | |
c5aa993b JM |
6160 | switch (fork_kind) |
6161 | { | |
6162 | case catch_fork: | |
c906108c SS |
6163 | create_fork_event_catchpoint (tempflag, cond_string); |
6164 | break; | |
c5aa993b | 6165 | case catch_vfork: |
c906108c SS |
6166 | create_vfork_event_catchpoint (tempflag, cond_string); |
6167 | break; | |
c5aa993b | 6168 | default: |
c906108c SS |
6169 | error ("unsupported or unknown fork kind; cannot catch it"); |
6170 | break; | |
c5aa993b | 6171 | } |
c906108c | 6172 | } |
e514a9d6 | 6173 | #endif |
c906108c | 6174 | |
e514a9d6 | 6175 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c SS |
6176 | static void |
6177 | catch_exec_command_1 (arg, tempflag, from_tty) | |
7a292a7a SS |
6178 | char *arg; |
6179 | int tempflag; | |
6180 | int from_tty; | |
c906108c | 6181 | { |
c5aa993b | 6182 | char *cond_string = NULL; |
c906108c SS |
6183 | |
6184 | ep_skip_leading_whitespace (&arg); | |
6185 | ||
6186 | /* The allowed syntax is: | |
c5aa993b JM |
6187 | catch exec |
6188 | catch exec if <cond> | |
c906108c SS |
6189 | |
6190 | First, check if there's an if clause. */ | |
6191 | cond_string = ep_parse_optional_if_clause (&arg); | |
6192 | ||
6193 | if ((*arg != '\0') && !isspace (*arg)) | |
6194 | error ("Junk at end of arguments."); | |
6195 | ||
6196 | /* If this target supports it, create an exec catchpoint | |
6197 | and enable reporting of such events. */ | |
6198 | create_exec_event_catchpoint (tempflag, cond_string); | |
6199 | } | |
e514a9d6 | 6200 | #endif |
c5aa993b | 6201 | |
c906108c SS |
6202 | #if defined(SOLIB_ADD) |
6203 | static void | |
6204 | catch_load_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
6205 | char *arg; |
6206 | int tempflag; | |
6207 | int from_tty; | |
c906108c | 6208 | { |
c5aa993b JM |
6209 | char *dll_pathname = NULL; |
6210 | char *cond_string = NULL; | |
6211 | ||
c906108c | 6212 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6213 | |
c906108c | 6214 | /* The allowed syntax is: |
c5aa993b JM |
6215 | catch load |
6216 | catch load if <cond> | |
6217 | catch load <filename> | |
6218 | catch load <filename> if <cond> | |
6219 | ||
c906108c SS |
6220 | The user is not allowed to specify the <filename> after an |
6221 | if clause. | |
c5aa993b | 6222 | |
c906108c | 6223 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6224 | |
c906108c SS |
6225 | First, check if there's an if clause. If so, then there |
6226 | cannot be a filename. */ | |
6227 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6228 | |
c906108c SS |
6229 | /* If there was an if clause, then there cannot be a filename. |
6230 | Else, there might be a filename and an if clause. */ | |
6231 | if (cond_string == NULL) | |
6232 | { | |
6233 | dll_pathname = ep_parse_optional_filename (&arg); | |
6234 | ep_skip_leading_whitespace (&arg); | |
6235 | cond_string = ep_parse_optional_if_clause (&arg); | |
6236 | } | |
c5aa993b | 6237 | |
c906108c SS |
6238 | if ((*arg != '\0') && !isspace (*arg)) |
6239 | error ("Junk at end of arguments."); | |
c5aa993b | 6240 | |
c906108c SS |
6241 | /* Create a load breakpoint that only triggers when a load of |
6242 | the specified dll (or any dll, if no pathname was specified) | |
6243 | occurs. */ | |
53a5351d JM |
6244 | SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, |
6245 | dll_pathname, cond_string); | |
c906108c | 6246 | } |
c5aa993b | 6247 | |
c906108c SS |
6248 | static void |
6249 | catch_unload_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
6250 | char *arg; |
6251 | int tempflag; | |
6252 | int from_tty; | |
c906108c | 6253 | { |
c5aa993b JM |
6254 | char *dll_pathname = NULL; |
6255 | char *cond_string = NULL; | |
6256 | ||
c906108c | 6257 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6258 | |
c906108c | 6259 | /* The allowed syntax is: |
c5aa993b JM |
6260 | catch unload |
6261 | catch unload if <cond> | |
6262 | catch unload <filename> | |
6263 | catch unload <filename> if <cond> | |
6264 | ||
c906108c SS |
6265 | The user is not allowed to specify the <filename> after an |
6266 | if clause. | |
c5aa993b | 6267 | |
c906108c | 6268 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6269 | |
c906108c SS |
6270 | First, check if there's an if clause. If so, then there |
6271 | cannot be a filename. */ | |
6272 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6273 | |
c906108c SS |
6274 | /* If there was an if clause, then there cannot be a filename. |
6275 | Else, there might be a filename and an if clause. */ | |
6276 | if (cond_string == NULL) | |
6277 | { | |
6278 | dll_pathname = ep_parse_optional_filename (&arg); | |
6279 | ep_skip_leading_whitespace (&arg); | |
6280 | cond_string = ep_parse_optional_if_clause (&arg); | |
6281 | } | |
c5aa993b | 6282 | |
c906108c SS |
6283 | if ((*arg != '\0') && !isspace (*arg)) |
6284 | error ("Junk at end of arguments."); | |
c5aa993b | 6285 | |
c906108c SS |
6286 | /* Create an unload breakpoint that only triggers when an unload of |
6287 | the specified dll (or any dll, if no pathname was specified) | |
6288 | occurs. */ | |
53a5351d JM |
6289 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, |
6290 | dll_pathname, cond_string); | |
c906108c SS |
6291 | } |
6292 | #endif /* SOLIB_ADD */ | |
6293 | ||
6294 | /* Commands to deal with catching exceptions. */ | |
6295 | ||
6296 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6297 | exception event callback */ |
c906108c SS |
6298 | |
6299 | static void | |
6300 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal) | |
7a292a7a SS |
6301 | int tempflag; |
6302 | char *cond_string; | |
6303 | enum exception_event_kind ex_event; | |
6304 | struct symtab_and_line *sal; | |
c906108c | 6305 | { |
c5aa993b | 6306 | struct breakpoint *b; |
c5aa993b | 6307 | int thread = -1; /* All threads. */ |
c906108c | 6308 | |
c5aa993b | 6309 | if (!sal) /* no exception support? */ |
c906108c SS |
6310 | return; |
6311 | ||
6312 | b = set_raw_breakpoint (*sal); | |
6313 | set_breakpoint_count (breakpoint_count + 1); | |
6314 | b->number = breakpoint_count; | |
6315 | b->cond = NULL; | |
53a5351d JM |
6316 | b->cond_string = (cond_string == NULL) ? |
6317 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
6318 | b->thread = thread; |
6319 | b->addr_string = NULL; | |
6320 | b->enable = enabled; | |
6321 | b->disposition = tempflag ? del : donttouch; | |
6322 | switch (ex_event) | |
6323 | { | |
c5aa993b JM |
6324 | case EX_EVENT_THROW: |
6325 | b->type = bp_catch_throw; | |
6326 | break; | |
6327 | case EX_EVENT_CATCH: | |
6328 | b->type = bp_catch_catch; | |
6329 | break; | |
6330 | default: /* error condition */ | |
6331 | b->type = bp_none; | |
6332 | b->enable = disabled; | |
6333 | error ("Internal error -- invalid catchpoint kind"); | |
c906108c SS |
6334 | } |
6335 | mention (b); | |
6336 | } | |
6337 | ||
c5aa993b | 6338 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6339 | |
6340 | static void | |
6341 | catch_exception_command_1 (ex_event, arg, tempflag, from_tty) | |
7a292a7a SS |
6342 | enum exception_event_kind ex_event; |
6343 | char *arg; | |
6344 | int tempflag; | |
6345 | int from_tty; | |
c906108c | 6346 | { |
c5aa993b JM |
6347 | char *cond_string = NULL; |
6348 | struct symtab_and_line *sal = NULL; | |
6349 | ||
c906108c | 6350 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6351 | |
c906108c SS |
6352 | cond_string = ep_parse_optional_if_clause (&arg); |
6353 | ||
6354 | if ((*arg != '\0') && !isspace (*arg)) | |
6355 | error ("Junk at end of arguments."); | |
6356 | ||
6357 | if ((ex_event != EX_EVENT_THROW) && | |
6358 | (ex_event != EX_EVENT_CATCH)) | |
6359 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6360 | ||
6361 | /* See if we can find a callback routine */ | |
6362 | sal = target_enable_exception_callback (ex_event, 1); | |
6363 | ||
c5aa993b | 6364 | if (sal) |
c906108c SS |
6365 | { |
6366 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6367 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6368 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6369 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6370 | else |
53a5351d | 6371 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6372 | } |
c5aa993b | 6373 | else |
c906108c SS |
6374 | { |
6375 | /* No callbacks from runtime system for exceptions. | |
6376 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
6377 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
6378 | { |
6379 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
6380 | } | |
c906108c | 6381 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
6382 | { |
6383 | /* Set a breakpoint on __raise_exception () */ | |
6384 | ||
53a5351d JM |
6385 | warning ("Unsupported with this platform/compiler combination."); |
6386 | warning ("Perhaps you can achieve the effect you want by setting"); | |
6387 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 6388 | } |
c906108c SS |
6389 | } |
6390 | } | |
6391 | ||
6392 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6393 | inside a catch_errors */ | |
6394 | ||
6395 | static int | |
6396 | cover_target_enable_exception_callback (arg) | |
c5aa993b | 6397 | PTR arg; |
c906108c SS |
6398 | { |
6399 | args_for_catchpoint_enable *args = arg; | |
6400 | struct symtab_and_line *sal; | |
6401 | sal = target_enable_exception_callback (args->kind, args->enable); | |
6402 | if (sal == NULL) | |
6403 | return 0; | |
6404 | else if (sal == (struct symtab_and_line *) -1) | |
6405 | return -1; | |
6406 | else | |
c5aa993b | 6407 | return 1; /*is valid */ |
c906108c SS |
6408 | } |
6409 | ||
6410 | ||
6411 | ||
6412 | /* This is the original v.4.16 and earlier version of the | |
6413 | catch_command_1() function. Now that other flavours of "catch" | |
6414 | have been introduced, and since exception handling can be handled | |
6415 | in other ways (through target ops) also, this is used only for the | |
6416 | GNU C++ exception handling system. | |
6417 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
6418 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
6419 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 6420 | |
c906108c SS |
6421 | Called from catch_exception_command_1 () */ |
6422 | ||
6423 | ||
6424 | static void | |
6425 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty) | |
6426 | char *arg; | |
6427 | int tempflag; | |
6428 | int from_tty; | |
6429 | { | |
6430 | /* First, translate ARG into something we can deal with in terms | |
6431 | of breakpoints. */ | |
6432 | ||
6433 | struct symtabs_and_lines sals; | |
6434 | struct symtab_and_line sal; | |
6435 | register struct expression *cond = 0; | |
6436 | register struct breakpoint *b; | |
6437 | char *save_arg; | |
6438 | int i; | |
6439 | ||
c5aa993b | 6440 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6441 | |
6442 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
6443 | are breakpointed. */ | |
6444 | ||
c5aa993b | 6445 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
6446 | && (arg[2] == ' ' || arg[2] == '\t'))) |
6447 | { | |
6448 | /* Grab all active catch clauses. */ | |
6449 | sals = get_catch_sals (0); | |
6450 | } | |
6451 | else | |
6452 | { | |
6453 | /* Grab selected catch clauses. */ | |
6454 | error ("catch NAME not implemented"); | |
6455 | ||
6456 | #if 0 | |
6457 | /* Not sure why this code has been disabled. I'm leaving | |
6458 | it disabled. We can never come here now anyway | |
6459 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 6460 | pai/1997-07-11 */ |
c906108c SS |
6461 | |
6462 | /* This isn't used; I don't know what it was for. */ | |
6463 | sals = map_catch_names (arg, catch_breakpoint); | |
6464 | #endif | |
6465 | } | |
6466 | ||
c5aa993b | 6467 | if (!sals.nelts) |
c906108c SS |
6468 | return; |
6469 | ||
6470 | save_arg = arg; | |
6471 | for (i = 0; i < sals.nelts; i++) | |
6472 | { | |
6473 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 6474 | |
c906108c SS |
6475 | while (arg && *arg) |
6476 | { | |
6477 | if (arg[0] == 'i' && arg[1] == 'f' | |
6478 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 6479 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
6480 | block_for_pc (sals.sals[i].pc), 0); |
6481 | else | |
6482 | error ("Junk at end of arguments."); | |
6483 | } | |
6484 | arg = save_arg; | |
6485 | } | |
6486 | ||
6487 | for (i = 0; i < sals.nelts; i++) | |
6488 | { | |
6489 | sal = sals.sals[i]; | |
6490 | ||
6491 | if (from_tty) | |
6492 | describe_other_breakpoints (sal.pc, sal.section); | |
6493 | ||
6494 | b = set_raw_breakpoint (sal); | |
6495 | set_breakpoint_count (breakpoint_count + 1); | |
6496 | b->number = breakpoint_count; | |
53a5351d JM |
6497 | |
6498 | /* Important -- this is an ordinary breakpoint. For platforms | |
6499 | with callback support for exceptions, | |
6500 | create_exception_catchpoint() will create special bp types | |
6501 | (bp_catch_catch and bp_catch_throw), and there is code in | |
6502 | insert_breakpoints() and elsewhere that depends on that. */ | |
6503 | b->type = bp_breakpoint; | |
c906108c SS |
6504 | |
6505 | b->cond = cond; | |
6506 | b->enable = enabled; | |
6507 | b->disposition = tempflag ? del : donttouch; | |
6508 | ||
6509 | mention (b); | |
6510 | } | |
6511 | ||
6512 | if (sals.nelts > 1) | |
6513 | { | |
53a5351d JM |
6514 | warning ("Multiple breakpoints were set."); |
6515 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 6516 | } |
c5aa993b | 6517 | free ((PTR) sals.sals); |
c906108c SS |
6518 | } |
6519 | ||
6520 | #if 0 | |
6521 | /* This creates a temporary internal breakpoint | |
6522 | just to placate infrun */ | |
6523 | static struct breakpoint * | |
6524 | create_temp_exception_breakpoint (pc) | |
c5aa993b | 6525 | CORE_ADDR pc; |
c906108c SS |
6526 | { |
6527 | struct symtab_and_line sal; | |
6528 | struct breakpoint *b; | |
6529 | ||
c5aa993b | 6530 | INIT_SAL (&sal); |
c906108c SS |
6531 | sal.pc = pc; |
6532 | sal.symtab = NULL; | |
6533 | sal.line = 0; | |
6534 | ||
6535 | b = set_raw_breakpoint (sal); | |
6536 | if (!b) | |
6537 | error ("Internal error -- couldn't set temp exception breakpoint"); | |
6538 | ||
6539 | b->type = bp_breakpoint; | |
6540 | b->disposition = del; | |
6541 | b->enable = enabled; | |
6542 | b->silent = 1; | |
6543 | b->number = internal_breakpoint_number--; | |
6544 | return b; | |
6545 | } | |
6546 | #endif | |
6547 | ||
6548 | static void | |
6549 | catch_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
6550 | char *arg; |
6551 | int tempflag; | |
6552 | int from_tty; | |
c906108c | 6553 | { |
c5aa993b | 6554 | |
c906108c SS |
6555 | /* The first argument may be an event name, such as "start" or "load". |
6556 | If so, then handle it as such. If it doesn't match an event name, | |
6557 | then attempt to interpret it as an exception name. (This latter is | |
6558 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6559 | |
c906108c | 6560 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6561 | char *arg1_start = arg; |
6562 | char *arg1_end; | |
6563 | int arg1_length; | |
6564 | ||
c906108c SS |
6565 | if (arg1_start == NULL) |
6566 | { | |
c5aa993b | 6567 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6568 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6569 | /* return; */ | |
c5aa993b | 6570 | /* Now, this is not allowed */ |
c906108c SS |
6571 | error ("Catch requires an event name."); |
6572 | ||
6573 | } | |
6574 | arg1_end = ep_find_event_name_end (arg1_start); | |
6575 | if (arg1_end == NULL) | |
6576 | error ("catch requires an event"); | |
6577 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6578 | |
c906108c SS |
6579 | /* Try to match what we found against known event names. */ |
6580 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6581 | { | |
6582 | error ("Catch of signal not yet implemented"); | |
6583 | } | |
6584 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6585 | { | |
53a5351d JM |
6586 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6587 | tempflag, from_tty); | |
c906108c SS |
6588 | } |
6589 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6590 | { | |
53a5351d JM |
6591 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6592 | tempflag, from_tty); | |
c906108c SS |
6593 | } |
6594 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6595 | { | |
6596 | error ("Catch of thread_start not yet implemented"); | |
6597 | } | |
6598 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6599 | { | |
6600 | error ("Catch of thread_exit not yet implemented"); | |
6601 | } | |
6602 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6603 | { | |
6604 | error ("Catch of thread_join not yet implemented"); | |
6605 | } | |
6606 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6607 | { | |
6608 | error ("Catch of start not yet implemented"); | |
6609 | } | |
6610 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6611 | { | |
6612 | error ("Catch of exit not yet implemented"); | |
6613 | } | |
6614 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6615 | { | |
6616 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 6617 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6618 | #else |
6619 | error ("Catch of fork not yet implemented"); | |
6620 | #endif | |
6621 | } | |
6622 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6623 | { | |
6624 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 6625 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6626 | #else |
6627 | error ("Catch of vfork not yet implemented"); | |
6628 | #endif | |
6629 | } | |
6630 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6631 | { | |
6632 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 6633 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6634 | #else |
6635 | error ("Catch of exec not yet implemented"); | |
6636 | #endif | |
6637 | } | |
6638 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6639 | { | |
6640 | #if defined(SOLIB_ADD) | |
c5aa993b | 6641 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6642 | #else |
6643 | error ("Catch of load not implemented"); | |
6644 | #endif | |
6645 | } | |
6646 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6647 | { | |
6648 | #if defined(SOLIB_ADD) | |
c5aa993b | 6649 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6650 | #else |
6651 | error ("Catch of load not implemented"); | |
6652 | #endif | |
6653 | } | |
6654 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6655 | { | |
6656 | error ("Catch of stop not yet implemented"); | |
6657 | } | |
c5aa993b | 6658 | |
c906108c SS |
6659 | /* This doesn't appear to be an event name */ |
6660 | ||
6661 | else | |
6662 | { | |
6663 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6664 | as the name of an exception */ |
c906108c | 6665 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6666 | /* Now this is not allowed */ |
c906108c SS |
6667 | error ("Unknown event kind specified for catch"); |
6668 | ||
6669 | } | |
6670 | } | |
6671 | ||
6672 | /* Used by the gui, could be made a worker for other things. */ | |
6673 | ||
6674 | struct breakpoint * | |
6675 | set_breakpoint_sal (sal) | |
6676 | struct symtab_and_line sal; | |
6677 | { | |
6678 | struct breakpoint *b; | |
6679 | b = set_raw_breakpoint (sal); | |
6680 | set_breakpoint_count (breakpoint_count + 1); | |
6681 | b->number = breakpoint_count; | |
6682 | b->type = bp_breakpoint; | |
6683 | b->cond = 0; | |
6684 | b->thread = -1; | |
6685 | return b; | |
6686 | } | |
6687 | ||
6688 | #if 0 | |
6689 | /* These aren't used; I don't know what they were for. */ | |
6690 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
6691 | static void | |
6692 | disable_catch (args) | |
6693 | char *args; | |
6694 | { | |
6695 | /* Map the disable command to catch clauses described in ARGS. */ | |
6696 | } | |
6697 | ||
6698 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
6699 | static void | |
6700 | enable_catch (args) | |
6701 | char *args; | |
6702 | { | |
6703 | /* Map the disable command to catch clauses described in ARGS. */ | |
6704 | } | |
6705 | ||
6706 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
6707 | static void | |
6708 | delete_catch (args) | |
6709 | char *args; | |
6710 | { | |
6711 | /* Map the delete command to catch clauses described in ARGS. */ | |
6712 | } | |
6713 | #endif /* 0 */ | |
6714 | ||
6715 | static void | |
6716 | catch_command (arg, from_tty) | |
6717 | char *arg; | |
6718 | int from_tty; | |
6719 | { | |
6720 | catch_command_1 (arg, 0, from_tty); | |
6721 | } | |
6722 | \f | |
6723 | ||
6724 | static void | |
6725 | tcatch_command (arg, from_tty) | |
6726 | char *arg; | |
6727 | int from_tty; | |
6728 | { | |
6729 | catch_command_1 (arg, 1, from_tty); | |
6730 | } | |
6731 | ||
6732 | ||
6733 | static void | |
6734 | clear_command (arg, from_tty) | |
6735 | char *arg; | |
6736 | int from_tty; | |
6737 | { | |
6738 | register struct breakpoint *b, *b1; | |
6739 | int default_match; | |
6740 | struct symtabs_and_lines sals; | |
6741 | struct symtab_and_line sal; | |
6742 | register struct breakpoint *found; | |
6743 | int i; | |
6744 | ||
6745 | if (arg) | |
6746 | { | |
6747 | sals = decode_line_spec (arg, 1); | |
6748 | default_match = 0; | |
6749 | } | |
6750 | else | |
6751 | { | |
c5aa993b | 6752 | sals.sals = (struct symtab_and_line *) |
c906108c | 6753 | xmalloc (sizeof (struct symtab_and_line)); |
c5aa993b | 6754 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6755 | sal.line = default_breakpoint_line; |
6756 | sal.symtab = default_breakpoint_symtab; | |
6757 | sal.pc = default_breakpoint_address; | |
6758 | if (sal.symtab == 0) | |
6759 | error ("No source file specified."); | |
6760 | ||
6761 | sals.sals[0] = sal; | |
6762 | sals.nelts = 1; | |
6763 | ||
6764 | default_match = 1; | |
6765 | } | |
6766 | ||
6767 | /* For each line spec given, delete bps which correspond | |
6768 | to it. We do this in two loops: the first loop looks at | |
6769 | the initial bp(s) in the chain which should be deleted, | |
6770 | the second goes down the rest of the chain looking ahead | |
6771 | one so it can take those bps off the chain without messing | |
6772 | up the chain. */ | |
6773 | ||
6774 | ||
6775 | for (i = 0; i < sals.nelts; i++) | |
6776 | { | |
6777 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6778 | If line given (pc == 0), clear all bpts on specified line. |
6779 | If defaulting, clear all bpts on default line | |
c906108c | 6780 | or at default pc. |
c5aa993b JM |
6781 | |
6782 | defaulting sal.pc != 0 tests to do | |
6783 | ||
6784 | 0 1 pc | |
6785 | 1 1 pc _and_ line | |
6786 | 0 0 line | |
6787 | 1 0 <can't happen> */ | |
c906108c SS |
6788 | |
6789 | sal = sals.sals[i]; | |
6790 | found = (struct breakpoint *) 0; | |
6791 | ||
6792 | ||
6793 | while (breakpoint_chain | |
c5aa993b JM |
6794 | /* Why don't we check here that this is not |
6795 | a watchpoint, etc., as we do below? | |
6796 | I can't make it fail, but don't know | |
6797 | what's stopping the failure: a watchpoint | |
6798 | of the same address as "sal.pc" should | |
6799 | wind up being deleted. */ | |
6800 | ||
6801 | && (((sal.pc && (breakpoint_chain->address == sal.pc)) && | |
6802 | (overlay_debugging == 0 || | |
6803 | breakpoint_chain->section == sal.section)) | |
6804 | || ((default_match || (0 == sal.pc)) | |
6805 | && breakpoint_chain->source_file != NULL | |
6806 | && sal.symtab != NULL | |
6807 | && STREQ (breakpoint_chain->source_file, sal.symtab->filename) | |
6808 | && breakpoint_chain->line_number == sal.line))) | |
c906108c SS |
6809 | |
6810 | { | |
6811 | b1 = breakpoint_chain; | |
6812 | breakpoint_chain = b1->next; | |
6813 | b1->next = found; | |
6814 | found = b1; | |
6815 | } | |
6816 | ||
6817 | ALL_BREAKPOINTS (b) | |
6818 | ||
c5aa993b JM |
6819 | while (b->next |
6820 | && b->next->type != bp_none | |
6821 | && b->next->type != bp_watchpoint | |
6822 | && b->next->type != bp_hardware_watchpoint | |
6823 | && b->next->type != bp_read_watchpoint | |
6824 | && b->next->type != bp_access_watchpoint | |
6825 | && (((sal.pc && (b->next->address == sal.pc)) && | |
6826 | (overlay_debugging == 0 || | |
6827 | b->next->section == sal.section)) | |
6828 | || ((default_match || (0 == sal.pc)) | |
6829 | && b->next->source_file != NULL | |
6830 | && sal.symtab != NULL | |
6831 | && STREQ (b->next->source_file, sal.symtab->filename) | |
6832 | && b->next->line_number == sal.line))) | |
c906108c SS |
6833 | |
6834 | ||
c5aa993b JM |
6835 | { |
6836 | b1 = b->next; | |
6837 | b->next = b1->next; | |
6838 | b1->next = found; | |
6839 | found = b1; | |
6840 | } | |
c906108c SS |
6841 | |
6842 | if (found == 0) | |
6843 | { | |
6844 | if (arg) | |
6845 | error ("No breakpoint at %s.", arg); | |
6846 | else | |
6847 | error ("No breakpoint at this line."); | |
6848 | } | |
6849 | ||
c5aa993b JM |
6850 | if (found->next) |
6851 | from_tty = 1; /* Always report if deleted more than one */ | |
6852 | if (from_tty) | |
6853 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
c906108c SS |
6854 | breakpoints_changed (); |
6855 | while (found) | |
6856 | { | |
c5aa993b JM |
6857 | if (from_tty) |
6858 | printf_unfiltered ("%d ", found->number); | |
c906108c SS |
6859 | b1 = found->next; |
6860 | delete_breakpoint (found); | |
6861 | found = b1; | |
6862 | } | |
c5aa993b JM |
6863 | if (from_tty) |
6864 | putchar_unfiltered ('\n'); | |
c906108c | 6865 | } |
c5aa993b | 6866 | free ((PTR) sals.sals); |
c906108c SS |
6867 | } |
6868 | \f | |
6869 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6870 | all breakpoints that are marked for deletion, whether hit or not. | |
6871 | This is called after any breakpoint is hit, or after errors. */ | |
6872 | ||
6873 | void | |
6874 | breakpoint_auto_delete (bs) | |
6875 | bpstat bs; | |
6876 | { | |
6877 | struct breakpoint *b, *temp; | |
6878 | ||
6879 | for (; bs; bs = bs->next) | |
c5aa993b | 6880 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
c906108c SS |
6881 | && bs->stop) |
6882 | delete_breakpoint (bs->breakpoint_at); | |
6883 | ||
6884 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
6885 | { |
6886 | if (b->disposition == del_at_next_stop) | |
6887 | delete_breakpoint (b); | |
6888 | } | |
c906108c SS |
6889 | } |
6890 | ||
53a5351d JM |
6891 | /* Delete a breakpoint and clean up all traces of it in the data |
6892 | structures. */ | |
c906108c SS |
6893 | |
6894 | void | |
6895 | delete_breakpoint (bpt) | |
6896 | struct breakpoint *bpt; | |
6897 | { | |
6898 | register struct breakpoint *b; | |
6899 | register bpstat bs; | |
6900 | ||
6901 | if (bpt == NULL) | |
6902 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6903 | ||
6904 | ||
6905 | /* Has this bp already been deleted? This can happen because multiple | |
6906 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6907 | ||
6908 | One example of this happening is a watchpoint's scope bp. When the | |
6909 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6910 | delete it. We also delete its scope bp. But the scope bp is marked | |
6911 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6912 | checked for auto-deleting bp's, which are deleted. | |
6913 | ||
6914 | A real solution to this problem might involve reference counts in bp's, | |
6915 | and/or giving them pointers back to their referencing bpstat's, and | |
6916 | teaching delete_breakpoint to only free a bp's storage when no more | |
6917 | references were extent. A cheaper bandaid was chosen. */ | |
6918 | if (bpt->type == bp_none) | |
6919 | return; | |
6920 | ||
6921 | if (delete_breakpoint_hook) | |
6922 | delete_breakpoint_hook (bpt); | |
104c1213 | 6923 | breakpoint_delete_event (bpt->number); |
c906108c SS |
6924 | |
6925 | if (bpt->inserted) | |
6926 | remove_breakpoint (bpt, mark_uninserted); | |
c5aa993b | 6927 | |
c906108c SS |
6928 | if (breakpoint_chain == bpt) |
6929 | breakpoint_chain = bpt->next; | |
6930 | ||
6931 | /* If we have callback-style exception catchpoints, don't go through | |
6932 | the adjustments to the C++ runtime library etc. if the inferior | |
6933 | isn't actually running. target_enable_exception_callback for a | |
6934 | null target ops vector gives an undesirable error message, so we | |
6935 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6936 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6937 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6938 | { | |
6939 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
6940 | static char message[sizeof (message1) + 30]; | |
6941 | args_for_catchpoint_enable args; | |
6942 | ||
53a5351d JM |
6943 | /* Format possible error msg */ |
6944 | sprintf (message, message1, bpt->number); | |
6945 | args.kind = bpt->type == bp_catch_catch ? | |
6946 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
6947 | args.enable = 0; |
6948 | catch_errors (cover_target_enable_exception_callback, &args, | |
6949 | message, RETURN_MASK_ALL); | |
6950 | } | |
6951 | ||
6952 | ||
6953 | ALL_BREAKPOINTS (b) | |
6954 | if (b->next == bpt) | |
c5aa993b JM |
6955 | { |
6956 | b->next = bpt->next; | |
6957 | break; | |
6958 | } | |
c906108c SS |
6959 | |
6960 | /* Before turning off the visuals for the bp, check to see that | |
6961 | there are no other bps at the same address. */ | |
6962 | if (tui_version) | |
6963 | { | |
6964 | int clearIt; | |
6965 | ||
6966 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
6967 | { |
6968 | clearIt = (b->address != bpt->address); | |
6969 | if (!clearIt) | |
6970 | break; | |
6971 | } | |
c906108c SS |
6972 | |
6973 | if (clearIt) | |
c5aa993b JM |
6974 | { |
6975 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, bpt, 0)); | |
6976 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
6977 | } | |
c906108c SS |
6978 | } |
6979 | ||
6980 | check_duplicates (bpt->address, bpt->section); | |
6981 | /* If this breakpoint was inserted, and there is another breakpoint | |
6982 | at the same address, we need to insert the other breakpoint. */ | |
6983 | if (bpt->inserted | |
6984 | && bpt->type != bp_hardware_watchpoint | |
6985 | && bpt->type != bp_read_watchpoint | |
6986 | && bpt->type != bp_access_watchpoint | |
6987 | && bpt->type != bp_catch_fork | |
6988 | && bpt->type != bp_catch_vfork | |
6989 | && bpt->type != bp_catch_exec) | |
6990 | { | |
6991 | ALL_BREAKPOINTS (b) | |
6992 | if (b->address == bpt->address | |
6993 | && b->section == bpt->section | |
6994 | && !b->duplicate | |
6995 | && b->enable != disabled | |
6996 | && b->enable != shlib_disabled | |
6997 | && b->enable != call_disabled) | |
c5aa993b JM |
6998 | { |
6999 | int val; | |
53a5351d | 7000 | |
c2c6d25f JM |
7001 | /* We should never reach this point if there is a permanent |
7002 | breakpoint at the same address as the one being deleted. | |
7003 | If there is a permanent breakpoint somewhere, it should | |
7004 | always be the only one inserted. */ | |
7005 | if (b->enable == permanent) | |
7006 | internal_error ("another breakpoint was inserted on top of " | |
7007 | "a permanent breakpoint"); | |
7008 | ||
53a5351d JM |
7009 | if (b->type == bp_hardware_breakpoint) |
7010 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
7011 | else | |
7012 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
7013 | ||
c5aa993b JM |
7014 | if (val != 0) |
7015 | { | |
7016 | target_terminal_ours_for_output (); | |
53a5351d | 7017 | warning ("Cannot insert breakpoint %d:", b->number); |
c5aa993b JM |
7018 | memory_error (val, b->address); /* which bombs us out */ |
7019 | } | |
7020 | else | |
7021 | b->inserted = 1; | |
7022 | } | |
c906108c SS |
7023 | } |
7024 | ||
7025 | free_command_lines (&bpt->commands); | |
7026 | if (bpt->cond) | |
7027 | free (bpt->cond); | |
7028 | if (bpt->cond_string != NULL) | |
7029 | free (bpt->cond_string); | |
7030 | if (bpt->addr_string != NULL) | |
7031 | free (bpt->addr_string); | |
7032 | if (bpt->exp != NULL) | |
7033 | free (bpt->exp); | |
7034 | if (bpt->exp_string != NULL) | |
7035 | free (bpt->exp_string); | |
7036 | if (bpt->val != NULL) | |
7037 | value_free (bpt->val); | |
7038 | if (bpt->source_file != NULL) | |
7039 | free (bpt->source_file); | |
7040 | if (bpt->dll_pathname != NULL) | |
7041 | free (bpt->dll_pathname); | |
7042 | if (bpt->triggered_dll_pathname != NULL) | |
7043 | free (bpt->triggered_dll_pathname); | |
7044 | if (bpt->exec_pathname != NULL) | |
7045 | free (bpt->exec_pathname); | |
7046 | ||
7047 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7048 | /* FIXME, how can we find all bpstat's? | |
7049 | We just check stop_bpstat for now. */ | |
7050 | for (bs = stop_bpstat; bs; bs = bs->next) | |
7051 | if (bs->breakpoint_at == bpt) | |
7052 | { | |
7053 | bs->breakpoint_at = NULL; | |
7054 | ||
7055 | /* we'd call bpstat_clear_actions, but that free's stuff and due | |
7056 | to the multiple pointers pointing to one item with no | |
7057 | reference counts found anywhere through out the bpstat's (how | |
7058 | do you spell fragile?), we don't want to free things twice -- | |
7059 | better a memory leak than a corrupt malloc pool! */ | |
7060 | bs->commands = NULL; | |
7061 | bs->old_val = NULL; | |
7062 | } | |
7063 | /* On the chance that someone will soon try again to delete this same | |
7064 | bp, we mark it as deleted before freeing its storage. */ | |
7065 | bpt->type = bp_none; | |
7066 | ||
c5aa993b | 7067 | free ((PTR) bpt); |
c906108c SS |
7068 | } |
7069 | ||
4d6140d9 AC |
7070 | static void |
7071 | do_delete_breakpoint_cleanup (void *b) | |
7072 | { | |
7073 | delete_breakpoint (b); | |
7074 | } | |
7075 | ||
7076 | struct cleanup * | |
7077 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7078 | { | |
7079 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7080 | } | |
7081 | ||
7082 | struct cleanup * | |
7083 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
7084 | { | |
7085 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
7086 | } | |
7087 | ||
c906108c SS |
7088 | void |
7089 | delete_command (arg, from_tty) | |
7090 | char *arg; | |
7091 | int from_tty; | |
7092 | { | |
7093 | struct breakpoint *b, *temp; | |
7094 | ||
7095 | if (arg == 0) | |
7096 | { | |
7097 | int breaks_to_delete = 0; | |
7098 | ||
7099 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7100 | Do not delete internal or call-dummy breakpoints, these |
7101 | have to be deleted with an explicit breakpoint number argument. */ | |
7102 | ALL_BREAKPOINTS (b) | |
7103 | { | |
7104 | if (b->type != bp_call_dummy && | |
7105 | b->type != bp_shlib_event && | |
c4093a6a | 7106 | b->type != bp_thread_event && |
c5aa993b JM |
7107 | b->number >= 0) |
7108 | breaks_to_delete = 1; | |
7109 | } | |
c906108c SS |
7110 | |
7111 | /* Ask user only if there are some breakpoints to delete. */ | |
7112 | if (!from_tty | |
7113 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
7114 | { | |
c5aa993b JM |
7115 | ALL_BREAKPOINTS_SAFE (b, temp) |
7116 | { | |
7117 | if (b->type != bp_call_dummy && | |
7118 | b->type != bp_shlib_event && | |
c4093a6a | 7119 | b->type != bp_thread_event && |
c5aa993b JM |
7120 | b->number >= 0) |
7121 | delete_breakpoint (b); | |
7122 | } | |
c906108c SS |
7123 | } |
7124 | } | |
7125 | else | |
7126 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7127 | } | |
7128 | ||
7129 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
7130 | The value we return ends up being the return value from catch_errors. | |
7131 | Unused in this case. */ | |
7132 | ||
7133 | static int | |
7134 | breakpoint_re_set_one (bint) | |
7135 | PTR bint; | |
7136 | { | |
53a5351d JM |
7137 | /* get past catch_errs */ |
7138 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7139 | struct value *mark; |
7140 | int i; | |
7141 | struct symtabs_and_lines sals; | |
7142 | char *s; | |
7143 | enum enable save_enable; | |
7144 | ||
7145 | switch (b->type) | |
7146 | { | |
7147 | case bp_none: | |
53a5351d JM |
7148 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
7149 | b->number); | |
c906108c SS |
7150 | return 0; |
7151 | case bp_breakpoint: | |
7152 | case bp_hardware_breakpoint: | |
7153 | case bp_catch_load: | |
7154 | case bp_catch_unload: | |
7155 | if (b->addr_string == NULL) | |
7156 | { | |
7157 | /* Anything without a string can't be re-set. */ | |
7158 | delete_breakpoint (b); | |
7159 | return 0; | |
7160 | } | |
7161 | /* In case we have a problem, disable this breakpoint. We'll restore | |
c5aa993b | 7162 | its status if we succeed. */ |
c906108c SS |
7163 | save_enable = b->enable; |
7164 | b->enable = disabled; | |
7165 | ||
7166 | set_language (b->language); | |
7167 | input_radix = b->input_radix; | |
7168 | s = b->addr_string; | |
c5aa993b | 7169 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7170 | for (i = 0; i < sals.nelts; i++) |
7171 | { | |
7172 | resolve_sal_pc (&sals.sals[i]); | |
7173 | ||
7174 | /* Reparse conditions, they might contain references to the | |
7175 | old symtab. */ | |
7176 | if (b->cond_string != NULL) | |
7177 | { | |
7178 | s = b->cond_string; | |
7179 | if (b->cond) | |
c5aa993b | 7180 | free ((PTR) b->cond); |
c906108c SS |
7181 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7182 | } | |
7183 | ||
c5aa993b | 7184 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 7185 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
7186 | /* ...or new and old breakpoints both have source files, and |
7187 | the source file name or the line number changes... */ | |
c906108c SS |
7188 | || (b->source_file != NULL |
7189 | && sals.sals[i].symtab != NULL | |
7190 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
7191 | || b->line_number != sals.sals[i].line) | |
c906108c | 7192 | ) |
c5aa993b JM |
7193 | /* ...or we switch between having a source file and not having |
7194 | one. */ | |
7195 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7196 | ) | |
c906108c SS |
7197 | { |
7198 | if (b->source_file != NULL) | |
7199 | free (b->source_file); | |
7200 | if (sals.sals[i].symtab == NULL) | |
7201 | b->source_file = NULL; | |
7202 | else | |
7203 | b->source_file = | |
7204 | savestring (sals.sals[i].symtab->filename, | |
7205 | strlen (sals.sals[i].symtab->filename)); | |
7206 | b->line_number = sals.sals[i].line; | |
7207 | b->address = sals.sals[i].pc; | |
7208 | ||
c5aa993b JM |
7209 | /* Used to check for duplicates here, but that can |
7210 | cause trouble, as it doesn't check for disable | |
7211 | breakpoints. */ | |
c906108c SS |
7212 | |
7213 | mention (b); | |
7214 | ||
7215 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7216 | rather than once for every breakpoint. */ |
c906108c SS |
7217 | breakpoints_changed (); |
7218 | } | |
7219 | b->section = sals.sals[i].section; | |
7220 | b->enable = save_enable; /* Restore it, this worked. */ | |
7221 | ||
7222 | ||
c5aa993b | 7223 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7224 | can be used. */ |
c5aa993b | 7225 | check_duplicates (b->address, b->section); |
c906108c SS |
7226 | |
7227 | } | |
c5aa993b | 7228 | free ((PTR) sals.sals); |
c906108c SS |
7229 | break; |
7230 | ||
7231 | case bp_watchpoint: | |
7232 | case bp_hardware_watchpoint: | |
7233 | case bp_read_watchpoint: | |
7234 | case bp_access_watchpoint: | |
7235 | innermost_block = NULL; | |
53a5351d JM |
7236 | /* The issue arises of what context to evaluate this in. The |
7237 | same one as when it was set, but what does that mean when | |
7238 | symbols have been re-read? We could save the filename and | |
7239 | functionname, but if the context is more local than that, the | |
7240 | best we could do would be something like how many levels deep | |
7241 | and which index at that particular level, but that's going to | |
7242 | be less stable than filenames or function names. */ | |
7243 | ||
c906108c SS |
7244 | /* So for now, just use a global context. */ |
7245 | if (b->exp) | |
c5aa993b | 7246 | free ((PTR) b->exp); |
c906108c SS |
7247 | b->exp = parse_expression (b->exp_string); |
7248 | b->exp_valid_block = innermost_block; | |
7249 | mark = value_mark (); | |
7250 | if (b->val) | |
7251 | value_free (b->val); | |
7252 | b->val = evaluate_expression (b->exp); | |
7253 | release_value (b->val); | |
7254 | if (VALUE_LAZY (b->val)) | |
7255 | value_fetch_lazy (b->val); | |
7256 | ||
7257 | if (b->cond_string != NULL) | |
7258 | { | |
7259 | s = b->cond_string; | |
7260 | if (b->cond) | |
c5aa993b JM |
7261 | free ((PTR) b->cond); |
7262 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); | |
c906108c SS |
7263 | } |
7264 | if (b->enable == enabled) | |
7265 | mention (b); | |
7266 | value_free_to_mark (mark); | |
7267 | break; | |
c5aa993b JM |
7268 | case bp_catch_catch: |
7269 | case bp_catch_throw: | |
c906108c | 7270 | break; |
c5aa993b JM |
7271 | /* We needn't really do anything to reset these, since the mask |
7272 | that requests them is unaffected by e.g., new libraries being | |
7273 | loaded. */ | |
c906108c SS |
7274 | case bp_catch_fork: |
7275 | case bp_catch_vfork: | |
7276 | case bp_catch_exec: | |
7277 | break; | |
c5aa993b | 7278 | |
c906108c SS |
7279 | default: |
7280 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7281 | /* fall through */ | |
c5aa993b JM |
7282 | /* Delete longjmp breakpoints, they will be reset later by |
7283 | breakpoint_re_set. */ | |
c906108c SS |
7284 | case bp_longjmp: |
7285 | case bp_longjmp_resume: | |
7286 | delete_breakpoint (b); | |
7287 | break; | |
7288 | ||
c5aa993b JM |
7289 | /* This breakpoint is special, it's set up when the inferior |
7290 | starts and we really don't want to touch it. */ | |
c906108c SS |
7291 | case bp_shlib_event: |
7292 | ||
c4093a6a JM |
7293 | /* Like bp_shlib_event, this breakpoint type is special. |
7294 | Once it is set up, we do not want to touch it. */ | |
7295 | case bp_thread_event: | |
7296 | ||
c5aa993b JM |
7297 | /* Keep temporary breakpoints, which can be encountered when we step |
7298 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7299 | Otherwise these should have been blown away via the cleanup chain | |
7300 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7301 | case bp_until: |
7302 | case bp_finish: | |
7303 | case bp_watchpoint_scope: | |
7304 | case bp_call_dummy: | |
7305 | case bp_step_resume: | |
7306 | break; | |
7307 | } | |
7308 | ||
7309 | return 0; | |
7310 | } | |
7311 | ||
7312 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7313 | void | |
7314 | breakpoint_re_set () | |
7315 | { | |
7316 | struct breakpoint *b, *temp; | |
7317 | enum language save_language; | |
7318 | int save_input_radix; | |
7319 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
7320 | char message[sizeof (message1) + 30 /* slop */ ]; |
7321 | ||
c906108c SS |
7322 | save_language = current_language->la_language; |
7323 | save_input_radix = input_radix; | |
7324 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7325 | { |
53a5351d JM |
7326 | /* Format possible error msg */ |
7327 | sprintf (message, message1, b->number); | |
c5aa993b JM |
7328 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
7329 | } | |
c906108c SS |
7330 | set_language (save_language); |
7331 | input_radix = save_input_radix; | |
7332 | ||
7333 | #ifdef GET_LONGJMP_TARGET | |
7334 | create_longjmp_breakpoint ("longjmp"); | |
7335 | create_longjmp_breakpoint ("_longjmp"); | |
7336 | create_longjmp_breakpoint ("siglongjmp"); | |
7337 | create_longjmp_breakpoint ("_siglongjmp"); | |
7338 | create_longjmp_breakpoint (NULL); | |
7339 | #endif | |
7340 | ||
7341 | #if 0 | |
7342 | /* Took this out (temporarily at least), since it produces an extra | |
7343 | blank line at startup. This messes up the gdbtests. -PB */ | |
7344 | /* Blank line to finish off all those mention() messages we just printed. */ | |
7345 | printf_filtered ("\n"); | |
7346 | #endif | |
7347 | } | |
7348 | \f | |
7349 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
7350 | If from_tty is nonzero, it prints a message to that effect, | |
7351 | which ends with a period (no newline). */ | |
7352 | ||
7353 | /* Reset the thread number of this breakpoint: | |
7354 | ||
7355 | - If the breakpoint is for all threads, leave it as-is. | |
7356 | - Else, reset it to the current thread for inferior_pid. */ | |
7357 | void | |
7358 | breakpoint_re_set_thread (b) | |
c5aa993b | 7359 | struct breakpoint *b; |
c906108c SS |
7360 | { |
7361 | if (b->thread != -1) | |
7362 | { | |
7363 | if (in_thread_list (inferior_pid)) | |
c5aa993b | 7364 | b->thread = pid_to_thread_id (inferior_pid); |
c906108c SS |
7365 | } |
7366 | } | |
7367 | ||
7368 | void | |
7369 | set_ignore_count (bptnum, count, from_tty) | |
7370 | int bptnum, count, from_tty; | |
7371 | { | |
7372 | register struct breakpoint *b; | |
7373 | ||
7374 | if (count < 0) | |
7375 | count = 0; | |
7376 | ||
7377 | ALL_BREAKPOINTS (b) | |
7378 | if (b->number == bptnum) | |
c5aa993b JM |
7379 | { |
7380 | b->ignore_count = count; | |
7381 | if (!from_tty) | |
c906108c | 7382 | return; |
c5aa993b JM |
7383 | else if (count == 0) |
7384 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7385 | bptnum); | |
7386 | else if (count == 1) | |
7387 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7388 | bptnum); | |
7389 | else | |
7390 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7391 | count, bptnum); | |
7392 | breakpoints_changed (); | |
7393 | return; | |
7394 | } | |
c906108c SS |
7395 | |
7396 | error ("No breakpoint number %d.", bptnum); | |
7397 | } | |
7398 | ||
7399 | /* Clear the ignore counts of all breakpoints. */ | |
7400 | void | |
7401 | breakpoint_clear_ignore_counts () | |
7402 | { | |
7403 | struct breakpoint *b; | |
7404 | ||
7405 | ALL_BREAKPOINTS (b) | |
7406 | b->ignore_count = 0; | |
7407 | } | |
7408 | ||
7409 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7410 | ||
7411 | static void | |
7412 | ignore_command (args, from_tty) | |
7413 | char *args; | |
7414 | int from_tty; | |
7415 | { | |
7416 | char *p = args; | |
7417 | register int num; | |
7418 | ||
7419 | if (p == 0) | |
7420 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7421 | |
c906108c | 7422 | num = get_number (&p); |
5c44784c JM |
7423 | if (num == 0) |
7424 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7425 | if (*p == 0) |
7426 | error ("Second argument (specified ignore-count) is missing."); | |
7427 | ||
7428 | set_ignore_count (num, | |
7429 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7430 | from_tty); | |
7431 | printf_filtered ("\n"); | |
7432 | breakpoints_changed (); | |
7433 | } | |
7434 | \f | |
7435 | /* Call FUNCTION on each of the breakpoints | |
7436 | whose numbers are given in ARGS. */ | |
7437 | ||
7438 | static void | |
7439 | map_breakpoint_numbers (args, function) | |
7440 | char *args; | |
7441 | void (*function) PARAMS ((struct breakpoint *)); | |
7442 | { | |
7443 | register char *p = args; | |
7444 | char *p1; | |
7445 | register int num; | |
5c44784c | 7446 | register struct breakpoint *b, *tmp; |
11cf8741 | 7447 | int match; |
c906108c SS |
7448 | |
7449 | if (p == 0) | |
7450 | error_no_arg ("one or more breakpoint numbers"); | |
7451 | ||
7452 | while (*p) | |
7453 | { | |
11cf8741 | 7454 | match = 0; |
c906108c | 7455 | p1 = p; |
c5aa993b | 7456 | |
5c44784c JM |
7457 | num = get_number_or_range (&p1); |
7458 | if (num == 0) | |
c5aa993b | 7459 | { |
5c44784c JM |
7460 | warning ("bad breakpoint number at or near '%s'", p); |
7461 | } | |
7462 | else | |
7463 | { | |
7464 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7465 | if (b->number == num) | |
7466 | { | |
7467 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7468 | match = 1; |
5c44784c JM |
7469 | function (b); |
7470 | if (related_breakpoint) | |
7471 | function (related_breakpoint); | |
11cf8741 | 7472 | break; |
5c44784c | 7473 | } |
11cf8741 JM |
7474 | if (match == 0) |
7475 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7476 | } |
c906108c SS |
7477 | p = p1; |
7478 | } | |
7479 | } | |
7480 | ||
7481 | void | |
7482 | disable_breakpoint (bpt) | |
7483 | struct breakpoint *bpt; | |
7484 | { | |
7485 | /* Never disable a watchpoint scope breakpoint; we want to | |
7486 | hit them when we leave scope so we can delete both the | |
7487 | watchpoint and its scope breakpoint at that time. */ | |
7488 | if (bpt->type == bp_watchpoint_scope) | |
7489 | return; | |
7490 | ||
c2c6d25f JM |
7491 | /* You can't disable permanent breakpoints. */ |
7492 | if (bpt->enable == permanent) | |
7493 | return; | |
7494 | ||
c906108c SS |
7495 | bpt->enable = disabled; |
7496 | ||
7497 | check_duplicates (bpt->address, bpt->section); | |
7498 | ||
7499 | if (modify_breakpoint_hook) | |
7500 | modify_breakpoint_hook (bpt); | |
104c1213 | 7501 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7502 | } |
7503 | ||
7504 | /* ARGSUSED */ | |
7505 | static void | |
7506 | disable_command (args, from_tty) | |
7507 | char *args; | |
7508 | int from_tty; | |
7509 | { | |
7510 | register struct breakpoint *bpt; | |
7511 | if (args == 0) | |
7512 | ALL_BREAKPOINTS (bpt) | |
7513 | switch (bpt->type) | |
c5aa993b JM |
7514 | { |
7515 | case bp_none: | |
53a5351d JM |
7516 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7517 | bpt->number); | |
c5aa993b JM |
7518 | continue; |
7519 | case bp_breakpoint: | |
7520 | case bp_catch_load: | |
7521 | case bp_catch_unload: | |
7522 | case bp_catch_fork: | |
7523 | case bp_catch_vfork: | |
7524 | case bp_catch_exec: | |
7525 | case bp_catch_catch: | |
7526 | case bp_catch_throw: | |
7527 | case bp_hardware_breakpoint: | |
7528 | case bp_watchpoint: | |
7529 | case bp_hardware_watchpoint: | |
7530 | case bp_read_watchpoint: | |
7531 | case bp_access_watchpoint: | |
7532 | disable_breakpoint (bpt); | |
7533 | default: | |
7534 | continue; | |
7535 | } | |
c906108c SS |
7536 | else |
7537 | map_breakpoint_numbers (args, disable_breakpoint); | |
7538 | } | |
7539 | ||
7540 | static void | |
7541 | do_enable_breakpoint (bpt, disposition) | |
7542 | struct breakpoint *bpt; | |
7543 | enum bpdisp disposition; | |
7544 | { | |
7545 | struct frame_info *save_selected_frame = NULL; | |
7546 | int save_selected_frame_level = -1; | |
7547 | int target_resources_ok, other_type_used; | |
7548 | struct value *mark; | |
7549 | ||
7550 | if (bpt->type == bp_hardware_breakpoint) | |
7551 | { | |
7552 | int i; | |
c5aa993b | 7553 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7554 | target_resources_ok = |
7555 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7556 | i + 1, 0); | |
c906108c | 7557 | if (target_resources_ok == 0) |
c5aa993b | 7558 | error ("No hardware breakpoint support in the target."); |
c906108c | 7559 | else if (target_resources_ok < 0) |
c5aa993b | 7560 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7561 | } |
7562 | ||
c2c6d25f JM |
7563 | if (bpt->enable != permanent) |
7564 | bpt->enable = enabled; | |
c906108c SS |
7565 | bpt->disposition = disposition; |
7566 | check_duplicates (bpt->address, bpt->section); | |
7567 | breakpoints_changed (); | |
7568 | ||
53a5351d JM |
7569 | if (bpt->type == bp_watchpoint || |
7570 | bpt->type == bp_hardware_watchpoint || | |
7571 | bpt->type == bp_read_watchpoint || | |
7572 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7573 | { |
7574 | if (bpt->exp_valid_block != NULL) | |
7575 | { | |
7576 | struct frame_info *fr = | |
7577 | ||
c5aa993b JM |
7578 | /* Ensure that we have the current frame. Else, this |
7579 | next query may pessimistically be answered as, "No, | |
7580 | not within current scope". */ | |
7581 | get_current_frame (); | |
7582 | fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
c906108c SS |
7583 | if (fr == NULL) |
7584 | { | |
7585 | printf_filtered ("\ | |
7586 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7587 | is valid is not currently in scope.\n", bpt->number); | |
7588 | bpt->enable = disabled; | |
7589 | return; | |
7590 | } | |
7591 | ||
7592 | save_selected_frame = selected_frame; | |
7593 | save_selected_frame_level = selected_frame_level; | |
7594 | select_frame (fr, -1); | |
7595 | } | |
7596 | ||
7597 | value_free (bpt->val); | |
7598 | mark = value_mark (); | |
7599 | bpt->val = evaluate_expression (bpt->exp); | |
7600 | release_value (bpt->val); | |
7601 | if (VALUE_LAZY (bpt->val)) | |
7602 | value_fetch_lazy (bpt->val); | |
7603 | ||
7604 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7605 | bpt->type == bp_read_watchpoint || |
7606 | bpt->type == bp_access_watchpoint) | |
7607 | { | |
7608 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7609 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7610 | ||
7611 | /* Hack around 'unused var' error for some targets here */ | |
7612 | (void) mem_cnt, i; | |
7613 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7614 | bpt->type, i + mem_cnt, other_type_used); | |
7615 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7616 | bp_watchpoint in the following condition */ | |
7617 | if (target_resources_ok < 0) | |
7618 | { | |
7619 | printf_filtered ("\ | |
c906108c SS |
7620 | Cannot enable watchpoint %d because target watch resources\n\ |
7621 | have been allocated for other watchpoints.\n", bpt->number); | |
c5aa993b JM |
7622 | bpt->enable = disabled; |
7623 | value_free_to_mark (mark); | |
7624 | return; | |
7625 | } | |
7626 | } | |
c906108c SS |
7627 | |
7628 | if (save_selected_frame_level >= 0) | |
c6902688 | 7629 | select_frame (save_selected_frame, save_selected_frame_level); |
c906108c SS |
7630 | value_free_to_mark (mark); |
7631 | } | |
7632 | if (modify_breakpoint_hook) | |
7633 | modify_breakpoint_hook (bpt); | |
104c1213 | 7634 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7635 | } |
7636 | ||
7637 | void | |
7638 | enable_breakpoint (bpt) | |
7639 | struct breakpoint *bpt; | |
7640 | { | |
7641 | do_enable_breakpoint (bpt, bpt->disposition); | |
7642 | } | |
7643 | ||
7644 | /* The enable command enables the specified breakpoints (or all defined | |
7645 | breakpoints) so they once again become (or continue to be) effective | |
7646 | in stopping the inferior. */ | |
7647 | ||
7648 | /* ARGSUSED */ | |
7649 | static void | |
7650 | enable_command (args, from_tty) | |
7651 | char *args; | |
7652 | int from_tty; | |
7653 | { | |
7654 | register struct breakpoint *bpt; | |
7655 | if (args == 0) | |
7656 | ALL_BREAKPOINTS (bpt) | |
7657 | switch (bpt->type) | |
c5aa993b JM |
7658 | { |
7659 | case bp_none: | |
53a5351d JM |
7660 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7661 | bpt->number); | |
c5aa993b JM |
7662 | continue; |
7663 | case bp_breakpoint: | |
7664 | case bp_catch_load: | |
7665 | case bp_catch_unload: | |
7666 | case bp_catch_fork: | |
7667 | case bp_catch_vfork: | |
7668 | case bp_catch_exec: | |
7669 | case bp_catch_catch: | |
7670 | case bp_catch_throw: | |
7671 | case bp_hardware_breakpoint: | |
7672 | case bp_watchpoint: | |
7673 | case bp_hardware_watchpoint: | |
7674 | case bp_read_watchpoint: | |
7675 | case bp_access_watchpoint: | |
7676 | enable_breakpoint (bpt); | |
7677 | default: | |
7678 | continue; | |
7679 | } | |
c906108c SS |
7680 | else |
7681 | map_breakpoint_numbers (args, enable_breakpoint); | |
7682 | } | |
7683 | ||
7684 | static void | |
7685 | enable_once_breakpoint (bpt) | |
7686 | struct breakpoint *bpt; | |
7687 | { | |
7688 | do_enable_breakpoint (bpt, disable); | |
7689 | } | |
7690 | ||
7691 | /* ARGSUSED */ | |
7692 | static void | |
7693 | enable_once_command (args, from_tty) | |
7694 | char *args; | |
7695 | int from_tty; | |
7696 | { | |
7697 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7698 | } | |
7699 | ||
7700 | static void | |
7701 | enable_delete_breakpoint (bpt) | |
7702 | struct breakpoint *bpt; | |
7703 | { | |
7704 | do_enable_breakpoint (bpt, del); | |
7705 | } | |
7706 | ||
7707 | /* ARGSUSED */ | |
7708 | static void | |
7709 | enable_delete_command (args, from_tty) | |
7710 | char *args; | |
7711 | int from_tty; | |
7712 | { | |
7713 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7714 | } | |
7715 | \f | |
7716 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7717 | ||
7718 | struct symtabs_and_lines | |
7719 | decode_line_spec_1 (string, funfirstline) | |
7720 | char *string; | |
7721 | int funfirstline; | |
7722 | { | |
7723 | struct symtabs_and_lines sals; | |
7724 | if (string == 0) | |
7725 | error ("Empty line specification."); | |
7726 | if (default_breakpoint_valid) | |
7727 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7728 | default_breakpoint_symtab, |
7729 | default_breakpoint_line, | |
c5aa993b | 7730 | (char ***) NULL); |
c906108c SS |
7731 | else |
7732 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 7733 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7734 | if (*string) |
7735 | error ("Junk at end of line specification: %s", string); | |
7736 | return sals; | |
7737 | } | |
7738 | \f | |
7739 | void | |
7740 | _initialize_breakpoint () | |
7741 | { | |
7742 | struct cmd_list_element *c; | |
7743 | ||
7744 | breakpoint_chain = 0; | |
7745 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7746 | before a breakpoint is set. */ | |
7747 | breakpoint_count = 0; | |
7748 | ||
7749 | add_com ("ignore", class_breakpoint, ignore_command, | |
7750 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7751 | Usage is `ignore N COUNT'."); | |
7752 | if (xdb_commands) | |
c5aa993b | 7753 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7754 | |
7755 | add_com ("commands", class_breakpoint, commands_command, | |
7756 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7757 | Give breakpoint number as argument after \"commands\".\n\ | |
7758 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7759 | The commands themselves follow starting on the next line.\n\ | |
7760 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7761 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7762 | then no output is printed when it is hit, except what the commands print."); | |
7763 | ||
7764 | add_com ("condition", class_breakpoint, condition_command, | |
7765 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7766 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
7767 | expression to be evaluated whenever breakpoint N is reached. "); | |
7768 | ||
7769 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
7770 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
7771 | Like \"break\" except the breakpoint is only temporary,\n\ | |
7772 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7773 | by using \"enable delete\" on the breakpoint number."); | |
c5aa993b JM |
7774 | add_com ("txbreak", class_breakpoint, tbreak_at_finish_command, |
7775 | "Set temporary breakpoint at procedure exit. Either there should\n\ | |
c906108c SS |
7776 | be no argument or the argument must be a depth.\n"); |
7777 | ||
7778 | add_com ("hbreak", class_breakpoint, hbreak_command, | |
7779 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7780 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
7781 | some target hardware may not have this support."); | |
7782 | ||
7783 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
7784 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7785 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
7786 | so it will be deleted when hit."); | |
7787 | ||
7788 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7789 | "Enable some breakpoints.\n\ | |
7790 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7791 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7792 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7793 | With a subcommand you can enable temporarily.", | |
7794 | &enablelist, "enable ", 1, &cmdlist); | |
7795 | if (xdb_commands) | |
c5aa993b JM |
7796 | add_com ("ab", class_breakpoint, enable_command, |
7797 | "Enable some breakpoints.\n\ | |
c906108c SS |
7798 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7799 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7800 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7801 | With a subcommand you can enable temporarily."); | |
7802 | ||
7803 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7804 | ||
7805 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7806 | "Enable some breakpoints.\n\ |
c906108c SS |
7807 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7808 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7809 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7810 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7811 | |
7812 | add_cmd ("once", no_class, enable_once_command, | |
7813 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7814 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7815 | &enablebreaklist); | |
7816 | ||
7817 | add_cmd ("delete", no_class, enable_delete_command, | |
7818 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7819 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7820 | &enablebreaklist); | |
7821 | ||
7822 | add_cmd ("delete", no_class, enable_delete_command, | |
7823 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7824 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7825 | &enablelist); | |
7826 | ||
7827 | add_cmd ("once", no_class, enable_once_command, | |
7828 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7829 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7830 | &enablelist); | |
7831 | ||
7832 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7833 | "Disable some breakpoints.\n\ |
c906108c SS |
7834 | Arguments are breakpoint numbers with spaces in between.\n\ |
7835 | To disable all breakpoints, give no argument.\n\ | |
7836 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7837 | &disablelist, "disable ", 1, &cmdlist); | |
7838 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7839 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7840 | if (xdb_commands) | |
c5aa993b JM |
7841 | add_com ("sb", class_breakpoint, disable_command, |
7842 | "Disable some breakpoints.\n\ | |
c906108c SS |
7843 | Arguments are breakpoint numbers with spaces in between.\n\ |
7844 | To disable all breakpoints, give no argument.\n\ | |
7845 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7846 | ||
7847 | add_cmd ("breakpoints", class_alias, disable_command, | |
7848 | "Disable some breakpoints.\n\ | |
7849 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7850 | To disable all breakpoints, give no argument.\n\ | |
7851 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7852 | This command may be abbreviated \"disable\".", | |
7853 | &disablelist); | |
7854 | ||
7855 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7856 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7857 | Arguments are breakpoint numbers with spaces in between.\n\ |
7858 | To delete all breakpoints, give no argument.\n\ | |
7859 | \n\ | |
7860 | Also a prefix command for deletion of other GDB objects.\n\ | |
7861 | The \"unset\" command is also an alias for \"delete\".", | |
7862 | &deletelist, "delete ", 1, &cmdlist); | |
7863 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7864 | if (xdb_commands) | |
7865 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7866 | "Delete some breakpoints.\n\ |
c906108c SS |
7867 | Arguments are breakpoint numbers with spaces in between.\n\ |
7868 | To delete all breakpoints, give no argument.\n"); | |
7869 | ||
7870 | add_cmd ("breakpoints", class_alias, delete_command, | |
7871 | "Delete some breakpoints or auto-display expressions.\n\ | |
7872 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7873 | To delete all breakpoints, give no argument.\n\ | |
7874 | This command may be abbreviated \"delete\".", | |
7875 | &deletelist); | |
7876 | ||
7877 | add_com ("clear", class_breakpoint, clear_command, | |
7878 | concat ("Clear breakpoint at specified line or function.\n\ | |
7879 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7880 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7881 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7882 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7883 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7884 | is executing in.\n\ |
7885 | \n\ | |
7886 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7887 | ||
7888 | add_com ("break", class_breakpoint, break_command, | |
7889 | concat ("Set breakpoint at specified line or function.\n\ | |
7890 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7891 | If line number is specified, break at start of code for that line.\n\ | |
7892 | If function is specified, break at start of code for that function.\n\ | |
7893 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7894 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7895 | This is useful for breaking on return to a stack frame.\n\ |
7896 | \n\ | |
7897 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7898 | \n\ | |
7899 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7900 | add_com_alias ("b", "break", class_run, 1); | |
7901 | add_com_alias ("br", "break", class_run, 1); | |
7902 | add_com_alias ("bre", "break", class_run, 1); | |
7903 | add_com_alias ("brea", "break", class_run, 1); | |
7904 | ||
c5aa993b JM |
7905 | add_com ("xbreak", class_breakpoint, break_at_finish_command, |
7906 | concat ("Set breakpoint at procedure exit. \n\ | |
c906108c SS |
7907 | Argument may be function name, or \"*\" and an address.\n\ |
7908 | If function is specified, break at end of code for that function.\n\ | |
7909 | If an address is specified, break at the end of the function that contains \n\ | |
7910 | that exact address.\n", | |
c5aa993b | 7911 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7912 | This is useful for breaking on return to a stack frame.\n\ |
7913 | \n\ | |
7914 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7915 | \n\ | |
7916 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7917 | add_com_alias ("xb", "xbreak", class_breakpoint, 1); | |
7918 | add_com_alias ("xbr", "xbreak", class_breakpoint, 1); | |
7919 | add_com_alias ("xbre", "xbreak", class_breakpoint, 1); | |
7920 | add_com_alias ("xbrea", "xbreak", class_breakpoint, 1); | |
7921 | ||
7922 | if (xdb_commands) | |
7923 | { | |
7924 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7925 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
7926 | add_com ("bx", class_breakpoint, break_at_finish_at_depth_command, | |
c5aa993b | 7927 | "Set breakpoint at procedure exit. Either there should\n\ |
c906108c SS |
7928 | be no argument or the argument must be a depth.\n"); |
7929 | } | |
7930 | ||
7931 | if (dbx_commands) | |
7932 | { | |
c5aa993b JM |
7933 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7934 | "Break in function/address or break at a line in the current file.", | |
7935 | &stoplist, "stop ", 1, &cmdlist); | |
7936 | add_cmd ("in", class_breakpoint, stopin_command, | |
7937 | "Break in function or address.\n", &stoplist); | |
7938 | add_cmd ("at", class_breakpoint, stopat_command, | |
7939 | "Break at a line in the current file.\n", &stoplist); | |
7940 | add_com ("status", class_info, breakpoints_info, | |
7941 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7942 | The \"Type\" column indicates one of:\n\ |
7943 | \tbreakpoint - normal breakpoint\n\ | |
7944 | \twatchpoint - watchpoint\n\ | |
7945 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7946 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7947 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7948 | address and file/line number respectively.\n\n", | |
c5aa993b | 7949 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7950 | are set to the address of the last breakpoint listed.\n\n\ |
7951 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7952 | breakpoint set.", NULL)); | |
7953 | } | |
7954 | ||
7955 | add_info ("breakpoints", breakpoints_info, | |
7956 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7957 | The \"Type\" column indicates one of:\n\ | |
7958 | \tbreakpoint - normal breakpoint\n\ | |
7959 | \twatchpoint - watchpoint\n\ | |
7960 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7961 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7962 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7963 | address and file/line number respectively.\n\n", | |
c5aa993b | 7964 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7965 | are set to the address of the last breakpoint listed.\n\n\ |
7966 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7967 | breakpoint set.", NULL)); | |
7968 | ||
7969 | if (xdb_commands) | |
c5aa993b JM |
7970 | add_com ("lb", class_breakpoint, breakpoints_info, |
7971 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7972 | The \"Type\" column indicates one of:\n\ |
7973 | \tbreakpoint - normal breakpoint\n\ | |
7974 | \twatchpoint - watchpoint\n\ | |
7975 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7976 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7977 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7978 | address and file/line number respectively.\n\n", | |
c5aa993b | 7979 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7980 | are set to the address of the last breakpoint listed.\n\n\ |
7981 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7982 | breakpoint set.", NULL)); | |
7983 | ||
c906108c | 7984 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7985 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7986 | The \"Type\" column indicates one of:\n\ |
7987 | \tbreakpoint - normal breakpoint\n\ | |
7988 | \twatchpoint - watchpoint\n\ | |
7989 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7990 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7991 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7992 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7993 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7994 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7995 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7996 | address and file/line number respectively.\n\n", | |
c5aa993b | 7997 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7998 | are set to the address of the last breakpoint listed.\n\n\ |
7999 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
8000 | breakpoint set.", NULL), | |
8001 | &maintenanceinfolist); | |
8002 | ||
c906108c | 8003 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 8004 | "Set catchpoints to catch events.\n\ |
c906108c SS |
8005 | Raised signals may be caught:\n\ |
8006 | \tcatch signal - all signals\n\ | |
8007 | \tcatch signal <signame> - a particular signal\n\ | |
8008 | Raised exceptions may be caught:\n\ | |
8009 | \tcatch throw - all exceptions, when thrown\n\ | |
8010 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
8011 | \tcatch catch - all exceptions, when caught\n\ | |
8012 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
8013 | Thread or process events may be caught:\n\ | |
8014 | \tcatch thread_start - any threads, just after creation\n\ | |
8015 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8016 | \tcatch thread_join - any threads, just after joins\n\ | |
8017 | Process events may be caught:\n\ | |
8018 | \tcatch start - any processes, just after creation\n\ | |
8019 | \tcatch exit - any processes, just before expiration\n\ | |
8020 | \tcatch fork - calls to fork()\n\ | |
8021 | \tcatch vfork - calls to vfork()\n\ | |
8022 | \tcatch exec - calls to exec()\n\ | |
8023 | Dynamically-linked library events may be caught:\n\ | |
8024 | \tcatch load - loads of any library\n\ | |
8025 | \tcatch load <libname> - loads of a particular library\n\ | |
8026 | \tcatch unload - unloads of any library\n\ | |
8027 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8028 | The act of your program's execution stopping may also be caught:\n\ | |
8029 | \tcatch stop\n\n\ | |
8030 | C++ exceptions may be caught:\n\ | |
8031 | \tcatch throw - all exceptions, when thrown\n\ | |
8032 | \tcatch catch - all exceptions, when caught\n\ | |
8033 | \n\ | |
8034 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8035 | after a fork or vfork is caught.\n\n\ | |
8036 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 8037 | |
c906108c | 8038 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 8039 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
8040 | Args like \"catch\" command.\n\ |
8041 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8042 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
8043 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b JM |
8044 | |
8045 | add_com ("watch", class_breakpoint, watch_command, | |
c906108c SS |
8046 | "Set a watchpoint for an expression.\n\ |
8047 | A watchpoint stops execution of your program whenever the value of\n\ | |
8048 | an expression changes."); | |
8049 | ||
8050 | add_com ("rwatch", class_breakpoint, rwatch_command, | |
8051 | "Set a read watchpoint for an expression.\n\ | |
8052 | A watchpoint stops execution of your program whenever the value of\n\ | |
8053 | an expression is read."); | |
8054 | ||
8055 | add_com ("awatch", class_breakpoint, awatch_command, | |
8056 | "Set a watchpoint for an expression.\n\ | |
8057 | A watchpoint stops execution of your program whenever the value of\n\ | |
8058 | an expression is either read or written."); | |
8059 | ||
8060 | add_info ("watchpoints", breakpoints_info, | |
8061 | "Synonym for ``info breakpoints''."); | |
8062 | ||
8063 | ||
8064 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
8065 | (char *) &can_use_hw_watchpoints, |
8066 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
8067 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8068 | such is available. (However, any hardware watchpoints that were\n\ | |
8069 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
8070 | hardware.)", | |
c5aa993b | 8071 | &setlist); |
c906108c SS |
8072 | add_show_from_set (c, &showlist); |
8073 | ||
8074 | can_use_hw_watchpoints = 1; | |
8075 | } |