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c906108c SS |
1 | /* Everything about breakpoints, for GDB. |
2 | Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 | |
c5aa993b | 3 | Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "expression.h" | |
29 | #include "gdbcore.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "value.h" | |
32 | #include "command.h" | |
33 | #include "inferior.h" | |
34 | #include "gdbthread.h" | |
35 | #include "target.h" | |
36 | #include "language.h" | |
37 | #include "gdb_string.h" | |
38 | #include "demangle.h" | |
39 | #include "annotate.h" | |
40 | #include "symfile.h" | |
41 | #include "objfiles.h" | |
42 | ||
104c1213 JM |
43 | #include "gdb-events.h" |
44 | ||
c906108c SS |
45 | /* Prototypes for local functions. */ |
46 | ||
47 | static void | |
48 | catch_command_1 PARAMS ((char *, int, int)); | |
49 | ||
50 | static void | |
51 | enable_delete_command PARAMS ((char *, int)); | |
52 | ||
53 | static void | |
54 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
55 | ||
56 | static void | |
57 | enable_once_command PARAMS ((char *, int)); | |
58 | ||
59 | static void | |
60 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
61 | ||
62 | static void | |
63 | disable_command PARAMS ((char *, int)); | |
64 | ||
65 | static void | |
66 | enable_command PARAMS ((char *, int)); | |
67 | ||
68 | static void | |
c5aa993b | 69 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); |
c906108c SS |
70 | |
71 | static void | |
72 | ignore_command PARAMS ((char *, int)); | |
73 | ||
74 | static int breakpoint_re_set_one PARAMS ((PTR)); | |
75 | ||
76 | static void | |
77 | clear_command PARAMS ((char *, int)); | |
78 | ||
79 | static void | |
80 | catch_command PARAMS ((char *, int)); | |
81 | ||
82 | static void | |
83 | handle_gnu_4_16_catch_command PARAMS ((char *, int, int)); | |
84 | ||
85 | static struct symtabs_and_lines | |
86 | get_catch_sals PARAMS ((int)); | |
87 | ||
88 | static void | |
89 | watch_command PARAMS ((char *, int)); | |
90 | ||
91 | static int | |
92 | can_use_hardware_watchpoint PARAMS ((struct value *)); | |
93 | ||
7a292a7a SS |
94 | static void break_at_finish_command PARAMS ((char *, int)); |
95 | static void break_at_finish_at_depth_command PARAMS ((char *, int)); | |
96 | ||
c906108c SS |
97 | void |
98 | tbreak_command PARAMS ((char *, int)); | |
99 | ||
7a292a7a SS |
100 | static void tbreak_at_finish_command PARAMS ((char *, int)); |
101 | ||
c906108c SS |
102 | static void |
103 | break_command_1 PARAMS ((char *, int, int)); | |
104 | ||
105 | static void | |
106 | mention PARAMS ((struct breakpoint *)); | |
107 | ||
108 | struct breakpoint * | |
c5aa993b | 109 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); |
c906108c SS |
110 | |
111 | static void | |
112 | check_duplicates PARAMS ((CORE_ADDR, asection *)); | |
113 | ||
114 | static void | |
115 | describe_other_breakpoints PARAMS ((CORE_ADDR, asection *)); | |
116 | ||
117 | static void | |
118 | breakpoints_info PARAMS ((char *, int)); | |
119 | ||
120 | static void | |
121 | breakpoint_1 PARAMS ((int, int)); | |
122 | ||
123 | static bpstat | |
c5aa993b | 124 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); |
c906108c SS |
125 | |
126 | static int breakpoint_cond_eval PARAMS ((PTR)); | |
127 | ||
128 | static void | |
129 | cleanup_executing_breakpoints PARAMS ((PTR)); | |
130 | ||
131 | static void | |
132 | commands_command PARAMS ((char *, int)); | |
133 | ||
134 | static void | |
135 | condition_command PARAMS ((char *, int)); | |
136 | ||
137 | static int | |
138 | get_number PARAMS ((char **)); | |
139 | ||
140 | void | |
141 | set_breakpoint_count PARAMS ((int)); | |
142 | ||
143 | #if 0 | |
144 | static struct breakpoint * | |
c5aa993b | 145 | create_temp_exception_breakpoint PARAMS ((CORE_ADDR)); |
c906108c SS |
146 | #endif |
147 | ||
c5aa993b JM |
148 | typedef enum |
149 | { | |
150 | mark_inserted, | |
151 | mark_uninserted | |
152 | } | |
153 | insertion_state_t; | |
c906108c SS |
154 | |
155 | static int | |
156 | remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t)); | |
157 | ||
158 | static int print_it_normal PARAMS ((bpstat)); | |
159 | ||
c5aa993b JM |
160 | typedef struct |
161 | { | |
162 | enum exception_event_kind kind; | |
163 | int enable; | |
164 | } | |
165 | args_for_catchpoint_enable; | |
c906108c SS |
166 | |
167 | static int watchpoint_check PARAMS ((PTR)); | |
168 | ||
169 | static int cover_target_enable_exception_callback PARAMS ((PTR)); | |
170 | ||
171 | static int print_it_done PARAMS ((bpstat)); | |
172 | ||
173 | static int print_it_noop PARAMS ((bpstat)); | |
174 | ||
175 | static void maintenance_info_breakpoints PARAMS ((char *, int)); | |
176 | ||
177 | #ifdef GET_LONGJMP_TARGET | |
178 | static void create_longjmp_breakpoint PARAMS ((char *)); | |
179 | #endif | |
180 | ||
181 | static int hw_breakpoint_used_count PARAMS ((void)); | |
182 | ||
183 | static int hw_watchpoint_used_count PARAMS ((enum bptype, int *)); | |
184 | ||
185 | static void hbreak_command PARAMS ((char *, int)); | |
186 | ||
187 | static void thbreak_command PARAMS ((char *, int)); | |
188 | ||
189 | static void watch_command_1 PARAMS ((char *, int, int)); | |
190 | ||
191 | static void rwatch_command PARAMS ((char *, int)); | |
192 | ||
193 | static void awatch_command PARAMS ((char *, int)); | |
194 | ||
195 | static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); | |
196 | ||
53a5351d JM |
197 | static void solib_load_unload_1 PARAMS ((char *hookname, |
198 | int tempflag, | |
199 | char *dll_pathname, | |
200 | char *cond_string, | |
201 | enum bptype bp_kind)); | |
7a292a7a | 202 | |
53a5351d JM |
203 | static void create_fork_vfork_event_catchpoint PARAMS ((int tempflag, |
204 | char *cond_string, | |
205 | enum bptype bp_kind)); | |
7a292a7a | 206 | |
53a5351d JM |
207 | static void break_at_finish_at_depth_command_1 PARAMS ((char *arg, |
208 | int flag, | |
209 | int from_tty)); | |
7a292a7a | 210 | |
53a5351d JM |
211 | static void break_at_finish_command_1 PARAMS ((char *arg, |
212 | int flag, | |
213 | int from_tty)); | |
7a292a7a SS |
214 | |
215 | static void stop_command PARAMS ((char *arg, int from_tty)); | |
216 | ||
217 | static void stopin_command PARAMS ((char *arg, int from_tty)); | |
218 | ||
219 | static void stopat_command PARAMS ((char *arg, int from_tty)); | |
220 | ||
221 | static char *ep_find_event_name_end PARAMS ((char *arg)); | |
222 | ||
223 | static char *ep_parse_optional_if_clause PARAMS ((char **arg)); | |
224 | ||
225 | static char *ep_parse_optional_filename PARAMS ((char **arg)); | |
226 | ||
53a5351d JM |
227 | static void catch_exec_command_1 PARAMS ((char *arg, int tempflag, |
228 | int from_tty)); | |
7a292a7a | 229 | |
53a5351d JM |
230 | static void create_exception_catchpoint |
231 | PARAMS ((int tempflag, char *cond_string, | |
232 | enum exception_event_kind ex_event, | |
233 | struct symtab_and_line * sal)); | |
7a292a7a | 234 | |
53a5351d JM |
235 | static void catch_exception_command_1 |
236 | PARAMS ((enum exception_event_kind ex_event, | |
237 | char *arg, int tempflag, int from_tty)); | |
7a292a7a SS |
238 | |
239 | static void tcatch_command PARAMS ((char *arg, int from_tty)); | |
240 | ||
241 | static void ep_skip_leading_whitespace PARAMS ((char **s)); | |
242 | ||
c906108c SS |
243 | /* Prototypes for exported functions. */ |
244 | ||
245 | static void | |
246 | awatch_command PARAMS ((char *, int)); | |
247 | ||
248 | static void | |
249 | do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); | |
250 | ||
251 | /* If FALSE, gdb will not use hardware support for watchpoints, even | |
252 | if such is available. */ | |
253 | static int can_use_hw_watchpoints; | |
254 | ||
255 | void delete_command PARAMS ((char *, int)); | |
256 | ||
257 | void _initialize_breakpoint PARAMS ((void)); | |
258 | ||
259 | void set_breakpoint_count PARAMS ((int)); | |
260 | ||
c5aa993b | 261 | extern int addressprint; /* Print machine addresses? */ |
c906108c SS |
262 | |
263 | #if defined (GET_LONGJMP_TARGET) || defined (SOLIB_ADD) | |
264 | static int internal_breakpoint_number = -1; | |
265 | #endif | |
266 | ||
267 | /* Are we executing breakpoint commands? */ | |
268 | static int executing_breakpoint_commands; | |
269 | ||
270 | /* Walk the following statement or block through all breakpoints. | |
271 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
272 | breakpoint. */ | |
273 | ||
274 | #define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) | |
275 | ||
276 | #define ALL_BREAKPOINTS_SAFE(b,tmp) \ | |
277 | for (b = breakpoint_chain; \ | |
278 | b? (tmp=b->next, 1): 0; \ | |
279 | b = tmp) | |
280 | ||
281 | /* True if SHIFT_INST_REGS defined, false otherwise. */ | |
282 | ||
283 | int must_shift_inst_regs = | |
284 | #if defined(SHIFT_INST_REGS) | |
285 | 1 | |
286 | #else | |
287 | 0 | |
288 | #endif | |
c5aa993b | 289 | ; |
c906108c SS |
290 | |
291 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ | |
292 | ||
293 | int show_breakpoint_hit_counts = 1; | |
294 | ||
295 | /* Chain of all breakpoints defined. */ | |
296 | ||
297 | struct breakpoint *breakpoint_chain; | |
298 | ||
299 | /* Number of last breakpoint made. */ | |
300 | ||
301 | int breakpoint_count; | |
302 | ||
c5aa993b JM |
303 | /* Pointer to current exception event record */ |
304 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
305 | |
306 | /* Indicator of whether exception catchpoints should be nuked | |
307 | between runs of a program */ | |
308 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 309 | |
c906108c SS |
310 | /* Indicator of when exception catchpoints set-up should be |
311 | reinitialized -- e.g. when program is re-run */ | |
312 | int exception_support_initialized = 0; | |
313 | ||
314 | /* This function returns a pointer to the string representation of the | |
315 | pathname of the dynamically-linked library that has just been | |
316 | loaded. | |
317 | ||
318 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
319 | or undefined results are guaranteed. | |
320 | ||
321 | This string's contents are only valid immediately after the | |
322 | inferior has stopped in the dynamic linker hook, and becomes | |
323 | invalid as soon as the inferior is continued. Clients should make | |
324 | a copy of this string if they wish to continue the inferior and | |
325 | then access the string. */ | |
326 | ||
327 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
328 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
329 | #endif | |
330 | ||
331 | /* This function returns a pointer to the string representation of the | |
332 | pathname of the dynamically-linked library that has just been | |
333 | unloaded. | |
334 | ||
335 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
336 | TRUE, or undefined results are guaranteed. | |
337 | ||
338 | This string's contents are only valid immediately after the | |
339 | inferior has stopped in the dynamic linker hook, and becomes | |
340 | invalid as soon as the inferior is continued. Clients should make | |
341 | a copy of this string if they wish to continue the inferior and | |
342 | then access the string. */ | |
343 | ||
344 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
345 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
346 | #endif | |
347 | ||
348 | /* This function is called by the "catch load" command. It allows the | |
349 | debugger to be notified by the dynamic linker when a specified | |
350 | library file (or any library file, if filename is NULL) is loaded. */ | |
351 | ||
352 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
353 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
354 | error ("catch of library loads not yet implemented on this platform") | |
355 | #endif | |
356 | ||
357 | /* This function is called by the "catch unload" command. It allows | |
358 | the debugger to be notified by the dynamic linker when a specified | |
359 | library file (or any library file, if filename is NULL) is | |
360 | unloaded. */ | |
361 | ||
362 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
363 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
364 | error ("catch of library unloads not yet implemented on this platform") | |
365 | #endif | |
366 | ||
367 | /* Set breakpoint count to NUM. */ | |
368 | ||
369 | void | |
370 | set_breakpoint_count (num) | |
371 | int num; | |
372 | { | |
373 | breakpoint_count = num; | |
374 | set_internalvar (lookup_internalvar ("bpnum"), | |
375 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
376 | } | |
377 | ||
378 | /* Used in run_command to zero the hit count when a new run starts. */ | |
379 | ||
380 | void | |
381 | clear_breakpoint_hit_counts () | |
382 | { | |
383 | struct breakpoint *b; | |
384 | ||
385 | ALL_BREAKPOINTS (b) | |
386 | b->hit_count = 0; | |
387 | } | |
388 | ||
389 | /* Default address, symtab and line to put a breakpoint at | |
390 | for "break" command with no arg. | |
391 | if default_breakpoint_valid is zero, the other three are | |
392 | not valid, and "break" with no arg is an error. | |
393 | ||
394 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
395 | ||
396 | int default_breakpoint_valid; | |
397 | CORE_ADDR default_breakpoint_address; | |
398 | struct symtab *default_breakpoint_symtab; | |
399 | int default_breakpoint_line; | |
400 | \f | |
401 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
402 | Advance *PP after the string and any trailing whitespace. | |
403 | ||
404 | Currently the string can either be a number or "$" followed by the name | |
405 | of a convenience variable. Making it an expression wouldn't work well | |
406 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
407 | static int | |
408 | get_number (pp) | |
409 | char **pp; | |
410 | { | |
411 | int retval; | |
412 | char *p = *pp; | |
413 | ||
414 | if (p == NULL) | |
415 | /* Empty line means refer to the last breakpoint. */ | |
416 | return breakpoint_count; | |
417 | else if (*p == '$') | |
418 | { | |
419 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 420 | to pass to lookup_internalvar(). */ |
c906108c SS |
421 | char *varname; |
422 | char *start = ++p; | |
423 | value_ptr val; | |
424 | ||
425 | while (isalnum (*p) || *p == '_') | |
426 | p++; | |
427 | varname = (char *) alloca (p - start + 1); | |
428 | strncpy (varname, start, p - start); | |
429 | varname[p - start] = '\0'; | |
430 | val = value_of_internalvar (lookup_internalvar (varname)); | |
431 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
432 | error ( | |
53a5351d | 433 | "Convenience variables used to specify breakpoints must have integer values." |
c5aa993b | 434 | ); |
c906108c SS |
435 | retval = (int) value_as_long (val); |
436 | } | |
437 | else | |
438 | { | |
439 | if (*p == '-') | |
440 | ++p; | |
441 | while (*p >= '0' && *p <= '9') | |
442 | ++p; | |
443 | if (p == *pp) | |
444 | /* There is no number here. (e.g. "cond a == b"). */ | |
445 | error_no_arg ("breakpoint number"); | |
446 | retval = atoi (*pp); | |
447 | } | |
448 | if (!(isspace (*p) || *p == '\0')) | |
449 | error ("breakpoint number expected"); | |
450 | while (isspace (*p)) | |
451 | p++; | |
452 | *pp = p; | |
453 | return retval; | |
454 | } | |
455 | \f | |
456 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
457 | ||
458 | static void | |
459 | condition_command (arg, from_tty) | |
460 | char *arg; | |
461 | int from_tty; | |
462 | { | |
463 | register struct breakpoint *b; | |
464 | char *p; | |
465 | register int bnum; | |
466 | ||
467 | if (arg == 0) | |
468 | error_no_arg ("breakpoint number"); | |
469 | ||
470 | p = arg; | |
471 | bnum = get_number (&p); | |
472 | ||
473 | ALL_BREAKPOINTS (b) | |
474 | if (b->number == bnum) | |
c5aa993b JM |
475 | { |
476 | if (b->cond) | |
477 | { | |
478 | free ((PTR) b->cond); | |
479 | b->cond = 0; | |
480 | } | |
481 | if (b->cond_string != NULL) | |
482 | free ((PTR) b->cond_string); | |
c906108c | 483 | |
c5aa993b JM |
484 | if (*p == 0) |
485 | { | |
486 | b->cond = 0; | |
487 | b->cond_string = NULL; | |
488 | if (from_tty) | |
489 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
490 | } | |
491 | else | |
492 | { | |
493 | arg = p; | |
494 | /* I don't know if it matters whether this is the string the user | |
495 | typed in or the decompiled expression. */ | |
496 | b->cond_string = savestring (arg, strlen (arg)); | |
497 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); | |
498 | if (*arg) | |
499 | error ("Junk at end of expression"); | |
500 | } | |
501 | breakpoints_changed (); | |
502 | return; | |
503 | } | |
c906108c SS |
504 | |
505 | error ("No breakpoint number %d.", bnum); | |
506 | } | |
507 | ||
508 | /* ARGSUSED */ | |
509 | static void | |
510 | commands_command (arg, from_tty) | |
511 | char *arg; | |
512 | int from_tty; | |
513 | { | |
514 | register struct breakpoint *b; | |
515 | char *p; | |
516 | register int bnum; | |
517 | struct command_line *l; | |
518 | ||
519 | /* If we allowed this, we would have problems with when to | |
520 | free the storage, if we change the commands currently | |
521 | being read from. */ | |
522 | ||
523 | if (executing_breakpoint_commands) | |
524 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
525 | ||
526 | p = arg; | |
527 | bnum = get_number (&p); | |
528 | if (p && *p) | |
529 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 530 | |
c906108c SS |
531 | ALL_BREAKPOINTS (b) |
532 | if (b->number == bnum) | |
c5aa993b JM |
533 | { |
534 | char tmpbuf[128]; | |
53a5351d JM |
535 | sprintf (tmpbuf, |
536 | "Type commands for when breakpoint %d is hit, one per line.", | |
537 | bnum); | |
c5aa993b JM |
538 | l = read_command_lines (tmpbuf, from_tty); |
539 | free_command_lines (&b->commands); | |
540 | b->commands = l; | |
541 | breakpoints_changed (); | |
542 | return; | |
543 | } | |
c906108c SS |
544 | error ("No breakpoint number %d.", bnum); |
545 | } | |
546 | \f | |
547 | /* Like target_read_memory() but if breakpoints are inserted, return | |
548 | the shadow contents instead of the breakpoints themselves. | |
549 | ||
550 | Read "memory data" from whatever target or inferior we have. | |
551 | Returns zero if successful, errno value if not. EIO is used | |
552 | for address out of bounds. If breakpoints are inserted, returns | |
553 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
554 | ||
555 | int | |
556 | read_memory_nobpt (memaddr, myaddr, len) | |
557 | CORE_ADDR memaddr; | |
558 | char *myaddr; | |
559 | unsigned len; | |
560 | { | |
561 | int status; | |
562 | struct breakpoint *b; | |
563 | CORE_ADDR bp_addr = 0; | |
564 | int bp_size = 0; | |
565 | ||
566 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
567 | /* No breakpoints on this machine. */ | |
568 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 569 | |
c906108c | 570 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
571 | { |
572 | if (b->type == bp_none) | |
53a5351d JM |
573 | warning ("reading through apparently deleted breakpoint #%d?", |
574 | b->number); | |
c5aa993b JM |
575 | |
576 | /* memory breakpoint? */ | |
577 | if (b->type == bp_watchpoint | |
578 | || b->type == bp_hardware_watchpoint | |
579 | || b->type == bp_read_watchpoint | |
580 | || b->type == bp_access_watchpoint) | |
581 | continue; | |
582 | /* bp in memory? */ | |
583 | if (!b->inserted) | |
584 | continue; | |
585 | /* Addresses and length of the part of the breakpoint that | |
586 | we need to copy. */ | |
587 | /* XXXX The m68k, sh and h8300 have different local and remote | |
588 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
589 | correctly determine the breakpoints memory address and size | |
590 | for these targets. */ | |
591 | bp_addr = b->address; | |
592 | bp_size = 0; | |
593 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
594 | continue; | |
595 | if (bp_size == 0) | |
596 | /* bp isn't valid */ | |
597 | continue; | |
598 | if (bp_addr + bp_size <= memaddr) | |
599 | /* The breakpoint is entirely before the chunk of memory we | |
600 | are reading. */ | |
601 | continue; | |
602 | if (bp_addr >= memaddr + len) | |
603 | /* The breakpoint is entirely after the chunk of memory we are | |
604 | reading. */ | |
605 | continue; | |
606 | /* Copy the breakpoint from the shadow contents, and recurse for | |
607 | the things before and after. */ | |
c906108c | 608 | { |
c5aa993b JM |
609 | /* Offset within shadow_contents. */ |
610 | int bptoffset = 0; | |
c906108c | 611 | |
c5aa993b JM |
612 | if (bp_addr < memaddr) |
613 | { | |
614 | /* Only copy the second part of the breakpoint. */ | |
615 | bp_size -= memaddr - bp_addr; | |
616 | bptoffset = memaddr - bp_addr; | |
617 | bp_addr = memaddr; | |
618 | } | |
619 | ||
620 | if (bp_addr + bp_size > memaddr + len) | |
621 | { | |
622 | /* Only copy the first part of the breakpoint. */ | |
623 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
624 | } | |
625 | ||
626 | memcpy (myaddr + bp_addr - memaddr, | |
627 | b->shadow_contents + bptoffset, bp_size); | |
628 | ||
629 | if (bp_addr > memaddr) | |
630 | { | |
631 | /* Copy the section of memory before the breakpoint. */ | |
632 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
633 | if (status != 0) | |
634 | return status; | |
635 | } | |
636 | ||
637 | if (bp_addr + bp_size < memaddr + len) | |
638 | { | |
639 | /* Copy the section of memory after the breakpoint. */ | |
640 | status = read_memory_nobpt | |
641 | (bp_addr + bp_size, | |
642 | myaddr + bp_addr + bp_size - memaddr, | |
643 | memaddr + len - (bp_addr + bp_size)); | |
644 | if (status != 0) | |
645 | return status; | |
646 | } | |
647 | return 0; | |
c906108c | 648 | } |
c5aa993b | 649 | } |
c906108c SS |
650 | /* Nothing overlaps. Just call read_memory_noerr. */ |
651 | return target_read_memory (memaddr, myaddr, len); | |
652 | } | |
c906108c | 653 | \f |
c5aa993b | 654 | |
c906108c SS |
655 | /* insert_breakpoints is used when starting or continuing the program. |
656 | remove_breakpoints is used when the program stops. | |
657 | Both return zero if successful, | |
658 | or an `errno' value if could not write the inferior. */ | |
659 | ||
660 | int | |
661 | insert_breakpoints () | |
662 | { | |
663 | register struct breakpoint *b, *temp; | |
53a5351d | 664 | int return_val = 0; /* return success code. */ |
c906108c SS |
665 | int val = 0; |
666 | int disabled_breaks = 0; | |
667 | ||
668 | static char message1[] = "Error inserting catchpoint %d:\n"; | |
669 | static char message[sizeof (message1) + 30]; | |
670 | ||
671 | ||
672 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
673 | { |
674 | if (b->type != bp_watchpoint | |
675 | && b->type != bp_hardware_watchpoint | |
676 | && b->type != bp_read_watchpoint | |
677 | && b->type != bp_access_watchpoint | |
678 | && b->type != bp_catch_fork | |
679 | && b->type != bp_catch_vfork | |
680 | && b->type != bp_catch_exec | |
681 | && b->type != bp_catch_throw | |
682 | && b->type != bp_catch_catch | |
683 | && b->enable != disabled | |
684 | && b->enable != shlib_disabled | |
685 | && b->enable != call_disabled | |
686 | && !b->inserted | |
687 | && !b->duplicate) | |
688 | { | |
689 | if (b->type == bp_hardware_breakpoint) | |
690 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
691 | else | |
692 | { | |
693 | /* Check to see if breakpoint is in an overlay section; | |
694 | if so, we should set the breakpoint at the LMA address. | |
695 | Only if the section is currently mapped should we ALSO | |
696 | set a break at the VMA address. */ | |
697 | if (overlay_debugging && b->section && | |
698 | section_is_overlay (b->section)) | |
699 | { | |
700 | CORE_ADDR addr; | |
701 | ||
702 | addr = overlay_unmapped_address (b->address, b->section); | |
703 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
704 | /* This would be the time to check val, to see if the | |
705 | breakpoint write to the load address succeeded. | |
706 | However, this might be an ordinary occurrance, eg. if | |
707 | the unmapped overlay is in ROM. */ | |
708 | val = 0; /* in case unmapped address failed */ | |
709 | if (section_is_mapped (b->section)) | |
710 | val = target_insert_breakpoint (b->address, | |
711 | b->shadow_contents); | |
712 | } | |
713 | else /* ordinary (non-overlay) address */ | |
714 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
715 | } | |
716 | if (val) | |
717 | { | |
718 | /* Can't set the breakpoint. */ | |
c906108c | 719 | #if defined (DISABLE_UNSETTABLE_BREAK) |
c5aa993b JM |
720 | if (DISABLE_UNSETTABLE_BREAK (b->address)) |
721 | { | |
722 | /* See also: disable_breakpoints_in_shlibs. */ | |
723 | val = 0; | |
724 | b->enable = shlib_disabled; | |
725 | if (!disabled_breaks) | |
726 | { | |
727 | target_terminal_ours_for_output (); | |
53a5351d JM |
728 | warning ("Cannot insert breakpoint %d:", b->number); |
729 | warning ("Temporarily disabling shared library breakpoints:"); | |
c5aa993b JM |
730 | } |
731 | disabled_breaks = 1; | |
53a5351d | 732 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
733 | } |
734 | else | |
c906108c | 735 | #endif |
c5aa993b JM |
736 | { |
737 | target_terminal_ours_for_output (); | |
53a5351d | 738 | warning ("Cannot insert breakpoint %d:", b->number); |
c906108c | 739 | #ifdef ONE_PROCESS_WRITETEXT |
53a5351d | 740 | warning ("The same program may be running in another process."); |
c906108c | 741 | #endif |
53a5351d | 742 | memory_error (val, b->address); /* which bombs us out */ |
c5aa993b JM |
743 | } |
744 | } | |
745 | else | |
746 | b->inserted = 1; | |
53a5351d JM |
747 | |
748 | if (val) | |
749 | return_val = val; /* remember failure */ | |
c5aa993b | 750 | } |
c906108c | 751 | else if (ep_is_exception_catchpoint (b) |
c5aa993b JM |
752 | && b->enable != disabled |
753 | && b->enable != shlib_disabled | |
754 | && b->enable != call_disabled | |
755 | && !b->inserted | |
756 | && !b->duplicate) | |
c906108c SS |
757 | |
758 | { | |
c5aa993b JM |
759 | /* If we get here, we must have a callback mechanism for exception |
760 | events -- with g++ style embedded label support, we insert | |
761 | ordinary breakpoints and not catchpoints. */ | |
53a5351d JM |
762 | /* Format possible error message */ |
763 | sprintf (message, message1, b->number); | |
c5aa993b JM |
764 | |
765 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
766 | if (val) | |
767 | { | |
768 | /* Couldn't set breakpoint for some reason */ | |
769 | target_terminal_ours_for_output (); | |
53a5351d JM |
770 | warning ("Cannot insert catchpoint %d; disabling it.", |
771 | b->number); | |
c5aa993b JM |
772 | b->enable = disabled; |
773 | } | |
774 | else | |
775 | { | |
776 | /* Bp set, now make sure callbacks are enabled */ | |
c906108c | 777 | int val; |
c5aa993b | 778 | args_for_catchpoint_enable args; |
53a5351d JM |
779 | args.kind = b->type == bp_catch_catch ? |
780 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
781 | args.enable = 1; |
782 | val = catch_errors (cover_target_enable_exception_callback, | |
783 | &args, | |
784 | message, RETURN_MASK_ALL); | |
785 | if (val != 0 && val != -1) | |
786 | { | |
787 | b->inserted = 1; | |
788 | } | |
c5aa993b | 789 | /* Check if something went wrong; val == 0 can be ignored */ |
c906108c SS |
790 | if (val == -1) |
791 | { | |
c5aa993b | 792 | /* something went wrong */ |
c906108c | 793 | target_terminal_ours_for_output (); |
53a5351d JM |
794 | warning ("Cannot insert catchpoint %d; disabling it.", |
795 | b->number); | |
c906108c SS |
796 | b->enable = disabled; |
797 | } | |
c5aa993b | 798 | } |
53a5351d JM |
799 | |
800 | if (val) | |
801 | return_val = val; /* remember failure */ | |
c906108c SS |
802 | } |
803 | ||
c5aa993b JM |
804 | else if ((b->type == bp_hardware_watchpoint || |
805 | b->type == bp_read_watchpoint || | |
806 | b->type == bp_access_watchpoint) | |
807 | && b->enable == enabled | |
808 | && !b->inserted | |
809 | && !b->duplicate) | |
810 | { | |
811 | struct frame_info *saved_frame; | |
812 | int saved_level, within_current_scope; | |
813 | value_ptr mark = value_mark (); | |
814 | value_ptr v; | |
815 | ||
816 | /* Save the current frame and level so we can restore it after | |
817 | evaluating the watchpoint expression on its own frame. */ | |
818 | saved_frame = selected_frame; | |
819 | saved_level = selected_frame_level; | |
820 | ||
821 | /* Determine if the watchpoint is within scope. */ | |
822 | if (b->exp_valid_block == NULL) | |
823 | within_current_scope = 1; | |
824 | else | |
825 | { | |
826 | struct frame_info *fi; | |
827 | ||
828 | /* There might be no current frame at this moment if we are | |
829 | resuming from a step over a breakpoint. | |
830 | Set up current frame before trying to find the watchpoint | |
831 | frame. */ | |
832 | get_current_frame (); | |
833 | fi = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
834 | within_current_scope = (fi != NULL); | |
835 | if (within_current_scope) | |
836 | select_frame (fi, -1); | |
837 | } | |
838 | ||
839 | if (within_current_scope) | |
840 | { | |
841 | /* Evaluate the expression and cut the chain of values | |
842 | produced off from the value chain. */ | |
843 | v = evaluate_expression (b->exp); | |
844 | value_release_to_mark (mark); | |
845 | ||
846 | b->val_chain = v; | |
847 | b->inserted = 1; | |
848 | ||
849 | /* Look at each value on the value chain. */ | |
850 | for (; v; v = v->next) | |
851 | { | |
852 | /* If it's a memory location, then we must watch it. */ | |
853 | if (v->lval == lval_memory) | |
854 | { | |
855 | int addr, len, type; | |
856 | ||
857 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
858 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
53a5351d | 859 | type = hw_write; |
c5aa993b | 860 | if (b->type == bp_read_watchpoint) |
53a5351d | 861 | type = hw_read; |
c5aa993b | 862 | else if (b->type == bp_access_watchpoint) |
53a5351d | 863 | type = hw_access; |
c5aa993b JM |
864 | |
865 | val = target_insert_watchpoint (addr, len, type); | |
866 | if (val == -1) | |
867 | { | |
868 | b->inserted = 0; | |
869 | break; | |
870 | } | |
871 | val = 0; | |
872 | } | |
873 | } | |
874 | /* Failure to insert a watchpoint on any memory value in the | |
875 | value chain brings us here. */ | |
876 | if (!b->inserted) | |
53a5351d JM |
877 | { |
878 | remove_breakpoint (b, mark_uninserted); | |
879 | warning ("Could not insert hardware watchpoint %d.", | |
880 | b->number); | |
881 | val = -1; | |
882 | } | |
c5aa993b JM |
883 | } |
884 | else | |
885 | { | |
53a5351d JM |
886 | printf_filtered ("Hardware watchpoint %d deleted", b->number); |
887 | printf_filtered ("because the program has left the block \n"); | |
888 | printf_filtered ("in which its expression is valid.\n"); | |
c5aa993b JM |
889 | if (b->related_breakpoint) |
890 | b->related_breakpoint->disposition = del_at_next_stop; | |
891 | b->disposition = del_at_next_stop; | |
892 | } | |
c906108c | 893 | |
c5aa993b JM |
894 | /* Restore the frame and level. */ |
895 | if ((saved_frame != selected_frame) || | |
896 | (saved_level != selected_frame_level)) | |
897 | select_and_print_frame (saved_frame, saved_level); | |
53a5351d JM |
898 | |
899 | if (val) | |
900 | return_val = val; /* remember failure */ | |
c5aa993b JM |
901 | } |
902 | else if ((b->type == bp_catch_fork | |
903 | || b->type == bp_catch_vfork | |
904 | || b->type == bp_catch_exec) | |
905 | && b->enable == enabled | |
906 | && !b->inserted | |
907 | && !b->duplicate) | |
908 | { | |
909 | val = -1; | |
910 | switch (b->type) | |
911 | { | |
912 | case bp_catch_fork: | |
913 | val = target_insert_fork_catchpoint (inferior_pid); | |
914 | break; | |
915 | case bp_catch_vfork: | |
916 | val = target_insert_vfork_catchpoint (inferior_pid); | |
917 | break; | |
918 | case bp_catch_exec: | |
919 | val = target_insert_exec_catchpoint (inferior_pid); | |
920 | break; | |
921 | default: | |
53a5351d | 922 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
c5aa993b JM |
923 | break; |
924 | } | |
925 | if (val < 0) | |
926 | { | |
927 | target_terminal_ours_for_output (); | |
53a5351d | 928 | warning ("Cannot insert catchpoint %d.", b->number); |
c5aa993b JM |
929 | } |
930 | else | |
931 | b->inserted = 1; | |
53a5351d JM |
932 | |
933 | if (val) | |
934 | return_val = val; /* remember failure */ | |
c5aa993b JM |
935 | } |
936 | } | |
c906108c | 937 | |
53a5351d | 938 | return return_val; |
c906108c SS |
939 | } |
940 | ||
941 | ||
942 | int | |
943 | remove_breakpoints () | |
944 | { | |
945 | register struct breakpoint *b; | |
946 | int val; | |
947 | ||
948 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
949 | { |
950 | if (b->inserted) | |
951 | { | |
952 | val = remove_breakpoint (b, mark_uninserted); | |
953 | if (val != 0) | |
954 | return val; | |
955 | } | |
956 | } | |
c906108c SS |
957 | return 0; |
958 | } | |
959 | ||
960 | int | |
961 | reattach_breakpoints (pid) | |
c5aa993b | 962 | int pid; |
c906108c SS |
963 | { |
964 | register struct breakpoint *b; | |
965 | int val; | |
c5aa993b | 966 | int saved_inferior_pid = inferior_pid; |
c906108c | 967 | |
53a5351d JM |
968 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
969 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 970 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
971 | { |
972 | if (b->inserted) | |
973 | { | |
974 | remove_breakpoint (b, mark_inserted); | |
975 | if (b->type == bp_hardware_breakpoint) | |
976 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
977 | else | |
978 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
979 | if (val != 0) | |
980 | { | |
981 | inferior_pid = saved_inferior_pid; | |
982 | return val; | |
983 | } | |
984 | } | |
985 | } | |
c906108c SS |
986 | inferior_pid = saved_inferior_pid; |
987 | return 0; | |
988 | } | |
989 | ||
990 | void | |
991 | update_breakpoints_after_exec () | |
992 | { | |
c5aa993b JM |
993 | struct breakpoint *b; |
994 | struct breakpoint *temp; | |
c906108c SS |
995 | |
996 | /* Doing this first prevents the badness of having delete_breakpoint() | |
997 | write a breakpoint's current "shadow contents" to lift the bp. That | |
998 | shadow is NOT valid after an exec()! */ | |
999 | mark_breakpoints_out (); | |
1000 | ||
1001 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1002 | { |
1003 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1004 | if (b->type == bp_shlib_event) | |
1005 | { | |
1006 | delete_breakpoint (b); | |
1007 | continue; | |
1008 | } | |
c906108c | 1009 | |
c5aa993b JM |
1010 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1011 | if (b->type == bp_step_resume) | |
1012 | { | |
1013 | delete_breakpoint (b); | |
1014 | continue; | |
1015 | } | |
1016 | ||
1017 | /* Ditto the sigtramp handler breakpoints. */ | |
1018 | if (b->type == bp_through_sigtramp) | |
1019 | { | |
1020 | delete_breakpoint (b); | |
1021 | continue; | |
1022 | } | |
1023 | ||
1024 | /* Ditto the exception-handling catchpoints. */ | |
1025 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1026 | { | |
1027 | delete_breakpoint (b); | |
1028 | continue; | |
1029 | } | |
1030 | ||
1031 | /* Don't delete an exec catchpoint, because else the inferior | |
1032 | won't stop when it ought! | |
1033 | ||
1034 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1035 | on this target, we may not be able to stop when the vfork is |
1036 | seen, but only when the subsequent exec is seen. (And because | |
1037 | deleting fork catchpoints here but not vfork catchpoints will | |
1038 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1039 | |
1040 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1041 | target address field, if any, is sufficient to have it be reset | |
1042 | automagically. Certainly on HP-UX that's true. */ | |
1043 | if ((b->type == bp_catch_exec) || | |
1044 | (b->type == bp_catch_vfork) || | |
1045 | (b->type == bp_catch_fork)) | |
1046 | { | |
1047 | b->address = (CORE_ADDR) NULL; | |
1048 | continue; | |
1049 | } | |
1050 | ||
1051 | /* bp_finish is a special case. The only way we ought to be able | |
1052 | to see one of these when an exec() has happened, is if the user | |
1053 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1054 | carries them to the call-site of the current callee, by setting | |
1055 | a temporary bp there and resuming. But in this case, the finish | |
1056 | will carry them entirely through the vfork & exec. | |
1057 | ||
1058 | We don't want to allow a bp_finish to remain inserted now. But | |
1059 | we can't safely delete it, 'cause finish_command has a handle to | |
1060 | the bp on a bpstat, and will later want to delete it. There's a | |
1061 | chance (and I've seen it happen) that if we delete the bp_finish | |
1062 | here, that its storage will get reused by the time finish_command | |
1063 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1064 | We really must allow finish_command to delete a bp_finish. | |
1065 | ||
53a5351d JM |
1066 | In the absense of a general solution for the "how do we know |
1067 | it's safe to delete something others may have handles to?" | |
1068 | problem, what we'll do here is just uninsert the bp_finish, and | |
1069 | let finish_command delete it. | |
1070 | ||
1071 | (We know the bp_finish is "doomed" in the sense that it's | |
1072 | momentary, and will be deleted as soon as finish_command sees | |
1073 | the inferior stopped. So it doesn't matter that the bp's | |
1074 | address is probably bogus in the new a.out, unlike e.g., the | |
1075 | solib breakpoints.) */ | |
c5aa993b | 1076 | |
c5aa993b JM |
1077 | if (b->type == bp_finish) |
1078 | { | |
1079 | continue; | |
1080 | } | |
1081 | ||
1082 | /* Without a symbolic address, we have little hope of the | |
1083 | pre-exec() address meaning the same thing in the post-exec() | |
1084 | a.out. */ | |
1085 | if (b->addr_string == NULL) | |
1086 | { | |
1087 | delete_breakpoint (b); | |
1088 | continue; | |
1089 | } | |
1090 | ||
1091 | /* If this breakpoint has survived the above battery of checks, then | |
1092 | it must have a symbolic address. Be sure that it gets reevaluated | |
1093 | to a target address, rather than reusing the old evaluation. */ | |
1094 | b->address = (CORE_ADDR) NULL; | |
1095 | } | |
c906108c SS |
1096 | } |
1097 | ||
1098 | int | |
1099 | detach_breakpoints (pid) | |
c5aa993b | 1100 | int pid; |
c906108c SS |
1101 | { |
1102 | register struct breakpoint *b; | |
1103 | int val; | |
c5aa993b JM |
1104 | int saved_inferior_pid = inferior_pid; |
1105 | ||
c906108c SS |
1106 | if (pid == inferior_pid) |
1107 | error ("Cannot detach breakpoints of inferior_pid"); | |
c5aa993b | 1108 | |
53a5351d JM |
1109 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1110 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 1111 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1112 | { |
1113 | if (b->inserted) | |
1114 | { | |
1115 | val = remove_breakpoint (b, mark_inserted); | |
1116 | if (val != 0) | |
1117 | { | |
1118 | inferior_pid = saved_inferior_pid; | |
1119 | return val; | |
1120 | } | |
1121 | } | |
1122 | } | |
c906108c SS |
1123 | inferior_pid = saved_inferior_pid; |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | static int | |
1128 | remove_breakpoint (b, is) | |
1129 | struct breakpoint *b; | |
c5aa993b | 1130 | insertion_state_t is; |
c906108c SS |
1131 | { |
1132 | int val; | |
c5aa993b | 1133 | |
c906108c | 1134 | if (b->type == bp_none) |
53a5351d JM |
1135 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
1136 | b->number); | |
c906108c SS |
1137 | |
1138 | if (b->type != bp_watchpoint | |
1139 | && b->type != bp_hardware_watchpoint | |
1140 | && b->type != bp_read_watchpoint | |
1141 | && b->type != bp_access_watchpoint | |
1142 | && b->type != bp_catch_fork | |
1143 | && b->type != bp_catch_vfork | |
1144 | && b->type != bp_catch_exec | |
1145 | && b->type != bp_catch_catch | |
1146 | && b->type != bp_catch_throw) | |
c5aa993b | 1147 | |
c906108c SS |
1148 | { |
1149 | if (b->type == bp_hardware_breakpoint) | |
c5aa993b | 1150 | val = target_remove_hw_breakpoint (b->address, b->shadow_contents); |
c906108c SS |
1151 | else |
1152 | { | |
1153 | /* Check to see if breakpoint is in an overlay section; | |
1154 | if so, we should remove the breakpoint at the LMA address. | |
1155 | If that is not equal to the raw address, then we should | |
1156 | presumable remove the breakpoint there as well. */ | |
c5aa993b | 1157 | if (overlay_debugging && b->section && |
c906108c SS |
1158 | section_is_overlay (b->section)) |
1159 | { | |
1160 | CORE_ADDR addr; | |
1161 | ||
1162 | addr = overlay_unmapped_address (b->address, b->section); | |
1163 | val = target_remove_breakpoint (addr, b->shadow_contents); | |
1164 | /* This would be the time to check val, to see if the | |
c5aa993b JM |
1165 | shadow breakpoint write to the load address succeeded. |
1166 | However, this might be an ordinary occurrance, eg. if | |
1167 | the unmapped overlay is in ROM. */ | |
1168 | val = 0; /* in case unmapped address failed */ | |
c906108c | 1169 | if (section_is_mapped (b->section)) |
c5aa993b | 1170 | val = target_remove_breakpoint (b->address, |
c906108c SS |
1171 | b->shadow_contents); |
1172 | } | |
c5aa993b JM |
1173 | else /* ordinary (non-overlay) address */ |
1174 | val = target_remove_breakpoint (b->address, b->shadow_contents); | |
c906108c SS |
1175 | } |
1176 | if (val) | |
1177 | return val; | |
1178 | b->inserted = (is == mark_inserted); | |
1179 | } | |
1180 | else if ((b->type == bp_hardware_watchpoint || | |
c5aa993b JM |
1181 | b->type == bp_read_watchpoint || |
1182 | b->type == bp_access_watchpoint) | |
c906108c | 1183 | && b->enable == enabled |
c5aa993b | 1184 | && !b->duplicate) |
c906108c SS |
1185 | { |
1186 | value_ptr v, n; | |
c5aa993b | 1187 | |
c906108c SS |
1188 | b->inserted = (is == mark_inserted); |
1189 | /* Walk down the saved value chain. */ | |
1190 | for (v = b->val_chain; v; v = v->next) | |
1191 | { | |
1192 | /* For each memory reference remove the watchpoint | |
1193 | at that address. */ | |
1194 | if (v->lval == lval_memory) | |
1195 | { | |
1196 | int addr, len, type; | |
c5aa993b | 1197 | |
c906108c SS |
1198 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); |
1199 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
53a5351d | 1200 | type = hw_write; |
c906108c | 1201 | if (b->type == bp_read_watchpoint) |
53a5351d | 1202 | type = hw_read; |
c906108c | 1203 | else if (b->type == bp_access_watchpoint) |
53a5351d | 1204 | type = hw_access; |
c906108c SS |
1205 | |
1206 | val = target_remove_watchpoint (addr, len, type); | |
1207 | if (val == -1) | |
1208 | b->inserted = 1; | |
1209 | val = 0; | |
1210 | } | |
1211 | } | |
1212 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
1213 | if ((is == mark_uninserted) && (b->inserted)) | |
53a5351d | 1214 | warning ("Could not remove hardware watchpoint %d.", |
c906108c | 1215 | b->number); |
c5aa993b | 1216 | |
c906108c | 1217 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1218 | the next time the watchpoint is inserted. */ |
c906108c SS |
1219 | for (v = b->val_chain; v; v = n) |
1220 | { | |
1221 | n = v->next; | |
1222 | value_free (v); | |
1223 | } | |
1224 | b->val_chain = NULL; | |
1225 | } | |
1226 | else if ((b->type == bp_catch_fork || | |
c5aa993b JM |
1227 | b->type == bp_catch_vfork || |
1228 | b->type == bp_catch_exec) | |
c906108c | 1229 | && b->enable == enabled |
c5aa993b | 1230 | && !b->duplicate) |
c906108c SS |
1231 | { |
1232 | val = -1; | |
1233 | switch (b->type) | |
c5aa993b JM |
1234 | { |
1235 | case bp_catch_fork: | |
1236 | val = target_remove_fork_catchpoint (inferior_pid); | |
1237 | break; | |
1238 | case bp_catch_vfork: | |
1239 | val = target_remove_vfork_catchpoint (inferior_pid); | |
1240 | break; | |
1241 | case bp_catch_exec: | |
1242 | val = target_remove_exec_catchpoint (inferior_pid); | |
1243 | break; | |
ac9a91a7 | 1244 | default: |
53a5351d | 1245 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1246 | break; |
c5aa993b | 1247 | } |
c906108c SS |
1248 | if (val) |
1249 | return val; | |
1250 | b->inserted = (is == mark_inserted); | |
1251 | } | |
1252 | else if ((b->type == bp_catch_catch || | |
c5aa993b JM |
1253 | b->type == bp_catch_throw) |
1254 | && b->enable == enabled | |
1255 | && !b->duplicate) | |
c906108c SS |
1256 | { |
1257 | ||
c5aa993b | 1258 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1259 | if (val) |
c5aa993b | 1260 | return val; |
c906108c SS |
1261 | b->inserted = (is == mark_inserted); |
1262 | } | |
1263 | else if (ep_is_exception_catchpoint (b) | |
c5aa993b JM |
1264 | && b->inserted /* sometimes previous insert doesn't happen */ |
1265 | && b->enable == enabled | |
1266 | && !b->duplicate) | |
c906108c SS |
1267 | { |
1268 | ||
c5aa993b | 1269 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1270 | if (val) |
c5aa993b JM |
1271 | return val; |
1272 | ||
c906108c SS |
1273 | b->inserted = (is == mark_inserted); |
1274 | } | |
1275 | ||
1276 | return 0; | |
1277 | } | |
1278 | ||
1279 | /* Clear the "inserted" flag in all breakpoints. */ | |
1280 | ||
1281 | void | |
1282 | mark_breakpoints_out () | |
1283 | { | |
1284 | register struct breakpoint *b; | |
1285 | ||
1286 | ALL_BREAKPOINTS (b) | |
1287 | b->inserted = 0; | |
1288 | } | |
1289 | ||
53a5351d JM |
1290 | /* Clear the "inserted" flag in all breakpoints and delete any |
1291 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1292 | |
1293 | Plus other such housekeeping that has to be done for breakpoints | |
1294 | between runs. | |
1295 | ||
53a5351d JM |
1296 | Note: this function gets called at the end of a run (by |
1297 | generic_mourn_inferior) and when a run begins (by | |
1298 | init_wait_for_inferior). */ | |
c906108c SS |
1299 | |
1300 | ||
1301 | ||
1302 | void | |
1303 | breakpoint_init_inferior (context) | |
c5aa993b | 1304 | enum inf_context context; |
c906108c SS |
1305 | { |
1306 | register struct breakpoint *b, *temp; | |
1307 | static int warning_needed = 0; | |
1308 | ||
1309 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1310 | { |
1311 | b->inserted = 0; | |
c906108c | 1312 | |
c5aa993b JM |
1313 | switch (b->type) |
1314 | { | |
1315 | case bp_call_dummy: | |
1316 | case bp_watchpoint_scope: | |
c906108c | 1317 | |
c5aa993b JM |
1318 | /* If the call dummy breakpoint is at the entry point it will |
1319 | cause problems when the inferior is rerun, so we better | |
1320 | get rid of it. | |
c906108c | 1321 | |
c5aa993b JM |
1322 | Also get rid of scope breakpoints. */ |
1323 | delete_breakpoint (b); | |
1324 | break; | |
c906108c | 1325 | |
c5aa993b JM |
1326 | case bp_watchpoint: |
1327 | case bp_hardware_watchpoint: | |
1328 | case bp_read_watchpoint: | |
1329 | case bp_access_watchpoint: | |
c906108c | 1330 | |
c5aa993b JM |
1331 | /* Likewise for watchpoints on local expressions. */ |
1332 | if (b->exp_valid_block != NULL) | |
1333 | delete_breakpoint (b); | |
1334 | break; | |
1335 | default: | |
1336 | /* Likewise for exception catchpoints in dynamic-linked | |
1337 | executables where required */ | |
1338 | if (ep_is_exception_catchpoint (b) && | |
1339 | exception_catchpoints_are_fragile) | |
1340 | { | |
1341 | warning_needed = 1; | |
c906108c | 1342 | delete_breakpoint (b); |
c5aa993b JM |
1343 | } |
1344 | break; | |
1345 | } | |
1346 | } | |
c906108c SS |
1347 | |
1348 | if (exception_catchpoints_are_fragile) | |
1349 | exception_support_initialized = 0; | |
1350 | ||
c5aa993b | 1351 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1352 | if (warning_needed && (context != inf_exited)) |
1353 | { | |
53a5351d JM |
1354 | warning ("Exception catchpoints from last run were deleted."); |
1355 | warning ("You must reinsert them explicitly."); | |
c906108c | 1356 | warning_needed = 0; |
c5aa993b | 1357 | } |
c906108c SS |
1358 | } |
1359 | ||
53a5351d JM |
1360 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at |
1361 | PC. When continuing from a location with a breakpoint, we actually | |
1362 | single step once before calling insert_breakpoints. */ | |
c906108c SS |
1363 | |
1364 | int | |
1365 | breakpoint_here_p (pc) | |
1366 | CORE_ADDR pc; | |
1367 | { | |
1368 | register struct breakpoint *b; | |
1369 | ||
1370 | ALL_BREAKPOINTS (b) | |
1371 | if (b->enable == enabled | |
1372 | && b->enable != shlib_disabled | |
1373 | && b->enable != call_disabled | |
1374 | && b->address == pc) /* bp is enabled and matches pc */ | |
c5aa993b JM |
1375 | { |
1376 | if (overlay_debugging && | |
1377 | section_is_overlay (b->section) && | |
1378 | !section_is_mapped (b->section)) | |
1379 | continue; /* unmapped overlay -- can't be a match */ | |
1380 | else | |
1381 | return 1; | |
1382 | } | |
c906108c SS |
1383 | |
1384 | return 0; | |
1385 | } | |
1386 | ||
53a5351d JM |
1387 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1388 | but it only returns true if there is actually a breakpoint inserted | |
1389 | at PC. */ | |
c906108c SS |
1390 | |
1391 | int | |
1392 | breakpoint_inserted_here_p (pc) | |
1393 | CORE_ADDR pc; | |
1394 | { | |
1395 | register struct breakpoint *b; | |
1396 | ||
1397 | ALL_BREAKPOINTS (b) | |
1398 | if (b->inserted | |
1399 | && b->address == pc) /* bp is inserted and matches pc */ | |
c5aa993b JM |
1400 | { |
1401 | if (overlay_debugging && | |
1402 | section_is_overlay (b->section) && | |
1403 | !section_is_mapped (b->section)) | |
1404 | continue; /* unmapped overlay -- can't be a match */ | |
1405 | else | |
1406 | return 1; | |
1407 | } | |
c906108c SS |
1408 | |
1409 | return 0; | |
1410 | } | |
1411 | ||
53a5351d JM |
1412 | /* Return nonzero if FRAME is a dummy frame. We can't use |
1413 | PC_IN_CALL_DUMMY because figuring out the saved SP would take too | |
1414 | much time, at least using get_saved_register on the 68k. This | |
1415 | means that for this function to work right a port must use the | |
1416 | bp_call_dummy breakpoint. */ | |
c906108c SS |
1417 | |
1418 | int | |
1419 | frame_in_dummy (frame) | |
1420 | struct frame_info *frame; | |
1421 | { | |
c906108c SS |
1422 | struct breakpoint *b; |
1423 | ||
c5aa993b | 1424 | if (!CALL_DUMMY_P) |
7a292a7a SS |
1425 | return 0; |
1426 | ||
1427 | if (USE_GENERIC_DUMMY_FRAMES) | |
1428 | return generic_pc_in_call_dummy (frame->pc, frame->frame, frame->frame); | |
c5aa993b | 1429 | |
c906108c | 1430 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1431 | { |
1432 | if (b->type == bp_call_dummy | |
1433 | && b->frame == frame->frame | |
1434 | /* We need to check the PC as well as the frame on the sparc, | |
1435 | for signals.exp in the testsuite. */ | |
1436 | && (frame->pc | |
1437 | >= (b->address | |
1438 | - SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE)) | |
1439 | && frame->pc <= b->address) | |
1440 | return 1; | |
1441 | } | |
c906108c SS |
1442 | return 0; |
1443 | } | |
1444 | ||
1445 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC | |
1446 | is valid for process/thread PID. */ | |
1447 | ||
1448 | int | |
1449 | breakpoint_thread_match (pc, pid) | |
1450 | CORE_ADDR pc; | |
1451 | int pid; | |
1452 | { | |
1453 | struct breakpoint *b; | |
1454 | int thread; | |
1455 | ||
1456 | thread = pid_to_thread_id (pid); | |
1457 | ||
1458 | ALL_BREAKPOINTS (b) | |
1459 | if (b->enable != disabled | |
1460 | && b->enable != shlib_disabled | |
1461 | && b->enable != call_disabled | |
1462 | && b->address == pc | |
1463 | && (b->thread == -1 || b->thread == thread)) | |
c5aa993b JM |
1464 | { |
1465 | if (overlay_debugging && | |
1466 | section_is_overlay (b->section) && | |
1467 | !section_is_mapped (b->section)) | |
1468 | continue; /* unmapped overlay -- can't be a match */ | |
1469 | else | |
1470 | return 1; | |
1471 | } | |
c906108c SS |
1472 | |
1473 | return 0; | |
1474 | } | |
c906108c | 1475 | \f |
c5aa993b | 1476 | |
c906108c SS |
1477 | /* bpstat stuff. External routines' interfaces are documented |
1478 | in breakpoint.h. */ | |
1479 | ||
1480 | int | |
1481 | ep_is_catchpoint (ep) | |
c5aa993b | 1482 | struct breakpoint *ep; |
c906108c SS |
1483 | { |
1484 | return | |
1485 | (ep->type == bp_catch_load) | |
1486 | || (ep->type == bp_catch_unload) | |
1487 | || (ep->type == bp_catch_fork) | |
1488 | || (ep->type == bp_catch_vfork) | |
1489 | || (ep->type == bp_catch_exec) | |
1490 | || (ep->type == bp_catch_catch) | |
1491 | || (ep->type == bp_catch_throw) | |
1492 | ||
1493 | ||
c5aa993b | 1494 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c SS |
1495 | ; |
1496 | } | |
c5aa993b | 1497 | |
c906108c SS |
1498 | int |
1499 | ep_is_shlib_catchpoint (ep) | |
c5aa993b | 1500 | struct breakpoint *ep; |
c906108c SS |
1501 | { |
1502 | return | |
1503 | (ep->type == bp_catch_load) | |
1504 | || (ep->type == bp_catch_unload) | |
1505 | ; | |
1506 | } | |
1507 | ||
1508 | int | |
1509 | ep_is_exception_catchpoint (ep) | |
c5aa993b | 1510 | struct breakpoint *ep; |
c906108c SS |
1511 | { |
1512 | return | |
1513 | (ep->type == bp_catch_catch) | |
1514 | || (ep->type == bp_catch_throw) | |
1515 | ; | |
1516 | } | |
1517 | ||
1518 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1519 | Also free any storage that is part of a bpstat. */ | |
1520 | ||
1521 | void | |
1522 | bpstat_clear (bsp) | |
1523 | bpstat *bsp; | |
1524 | { | |
1525 | bpstat p; | |
1526 | bpstat q; | |
1527 | ||
1528 | if (bsp == 0) | |
1529 | return; | |
1530 | p = *bsp; | |
1531 | while (p != NULL) | |
1532 | { | |
1533 | q = p->next; | |
1534 | if (p->old_val != NULL) | |
1535 | value_free (p->old_val); | |
c5aa993b | 1536 | free ((PTR) p); |
c906108c SS |
1537 | p = q; |
1538 | } | |
1539 | *bsp = NULL; | |
1540 | } | |
1541 | ||
1542 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1543 | is part of the bpstat is copied as well. */ | |
1544 | ||
1545 | bpstat | |
1546 | bpstat_copy (bs) | |
1547 | bpstat bs; | |
1548 | { | |
1549 | bpstat p = NULL; | |
1550 | bpstat tmp; | |
1551 | bpstat retval = NULL; | |
1552 | ||
1553 | if (bs == NULL) | |
1554 | return bs; | |
1555 | ||
1556 | for (; bs != NULL; bs = bs->next) | |
1557 | { | |
1558 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1559 | memcpy (tmp, bs, sizeof (*tmp)); | |
1560 | if (p == NULL) | |
1561 | /* This is the first thing in the chain. */ | |
1562 | retval = tmp; | |
1563 | else | |
1564 | p->next = tmp; | |
1565 | p = tmp; | |
1566 | } | |
1567 | p->next = NULL; | |
1568 | return retval; | |
1569 | } | |
1570 | ||
1571 | /* Find the bpstat associated with this breakpoint */ | |
1572 | ||
1573 | bpstat | |
c5aa993b | 1574 | bpstat_find_breakpoint (bsp, breakpoint) |
c906108c SS |
1575 | bpstat bsp; |
1576 | struct breakpoint *breakpoint; | |
1577 | { | |
c5aa993b JM |
1578 | if (bsp == NULL) |
1579 | return NULL; | |
c906108c | 1580 | |
c5aa993b JM |
1581 | for (; bsp != NULL; bsp = bsp->next) |
1582 | { | |
1583 | if (bsp->breakpoint_at == breakpoint) | |
1584 | return bsp; | |
1585 | } | |
c906108c SS |
1586 | return NULL; |
1587 | } | |
1588 | ||
1589 | /* Find a step_resume breakpoint associated with this bpstat. | |
1590 | (If there are multiple step_resume bp's on the list, this function | |
1591 | will arbitrarily pick one.) | |
1592 | ||
1593 | It is an error to use this function if BPSTAT doesn't contain a | |
1594 | step_resume breakpoint. | |
1595 | ||
1596 | See wait_for_inferior's use of this function. */ | |
1597 | struct breakpoint * | |
1598 | bpstat_find_step_resume_breakpoint (bsp) | |
c5aa993b | 1599 | bpstat bsp; |
c906108c SS |
1600 | { |
1601 | if (bsp == NULL) | |
1602 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1603 | ||
1604 | for (; bsp != NULL; bsp = bsp->next) | |
1605 | { | |
1606 | if ((bsp->breakpoint_at != NULL) && | |
c5aa993b JM |
1607 | (bsp->breakpoint_at->type == bp_step_resume)) |
1608 | return bsp->breakpoint_at; | |
c906108c SS |
1609 | } |
1610 | ||
1611 | error ("Internal error (no step_resume breakpoint found)"); | |
1612 | } | |
1613 | ||
1614 | ||
1615 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1616 | at. *BSP upon return is a bpstat which points to the remaining | |
1617 | breakpoints stopped at (but which is not guaranteed to be good for | |
1618 | anything but further calls to bpstat_num). | |
1619 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1620 | ||
1621 | int | |
1622 | bpstat_num (bsp) | |
1623 | bpstat *bsp; | |
1624 | { | |
1625 | struct breakpoint *b; | |
1626 | ||
1627 | if ((*bsp) == NULL) | |
1628 | return 0; /* No more breakpoint values */ | |
1629 | else | |
1630 | { | |
1631 | b = (*bsp)->breakpoint_at; | |
1632 | *bsp = (*bsp)->next; | |
1633 | if (b == NULL) | |
1634 | return -1; /* breakpoint that's been deleted since */ | |
1635 | else | |
c5aa993b | 1636 | return b->number; /* We have its number */ |
c906108c SS |
1637 | } |
1638 | } | |
1639 | ||
1640 | /* Modify BS so that the actions will not be performed. */ | |
1641 | ||
1642 | void | |
1643 | bpstat_clear_actions (bs) | |
1644 | bpstat bs; | |
1645 | { | |
1646 | for (; bs != NULL; bs = bs->next) | |
1647 | { | |
1648 | bs->commands = NULL; | |
1649 | if (bs->old_val != NULL) | |
1650 | { | |
1651 | value_free (bs->old_val); | |
1652 | bs->old_val = NULL; | |
1653 | } | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1658 | /* ARGSUSED */ | |
1659 | static void | |
1660 | cleanup_executing_breakpoints (ignore) | |
1661 | PTR ignore; | |
1662 | { | |
1663 | executing_breakpoint_commands = 0; | |
1664 | } | |
1665 | ||
1666 | /* Execute all the commands associated with all the breakpoints at this | |
1667 | location. Any of these commands could cause the process to proceed | |
1668 | beyond this point, etc. We look out for such changes by checking | |
1669 | the global "breakpoint_proceeded" after each command. */ | |
1670 | ||
1671 | void | |
1672 | bpstat_do_actions (bsp) | |
1673 | bpstat *bsp; | |
1674 | { | |
1675 | bpstat bs; | |
1676 | struct cleanup *old_chain; | |
1677 | struct command_line *cmd; | |
1678 | ||
1679 | /* Avoid endless recursion if a `source' command is contained | |
1680 | in bs->commands. */ | |
1681 | if (executing_breakpoint_commands) | |
1682 | return; | |
1683 | ||
1684 | executing_breakpoint_commands = 1; | |
1685 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1686 | ||
1687 | top: | |
1688 | /* Note that (as of this writing), our callers all appear to | |
1689 | be passing us the address of global stop_bpstat. And, if | |
1690 | our calls to execute_control_command cause the inferior to | |
1691 | proceed, that global (and hence, *bsp) will change. | |
1692 | ||
1693 | We must be careful to not touch *bsp unless the inferior | |
1694 | has not proceeded. */ | |
1695 | ||
1696 | /* This pointer will iterate over the list of bpstat's. */ | |
1697 | bs = *bsp; | |
1698 | ||
1699 | breakpoint_proceeded = 0; | |
1700 | for (; bs != NULL; bs = bs->next) | |
1701 | { | |
1702 | cmd = bs->commands; | |
1703 | while (cmd != NULL) | |
1704 | { | |
1705 | execute_control_command (cmd); | |
1706 | ||
1707 | if (breakpoint_proceeded) | |
1708 | break; | |
1709 | else | |
1710 | cmd = cmd->next; | |
1711 | } | |
1712 | if (breakpoint_proceeded) | |
1713 | /* The inferior is proceeded by the command; bomb out now. | |
1714 | The bpstat chain has been blown away by wait_for_inferior. | |
1715 | But since execution has stopped again, there is a new bpstat | |
1716 | to look at, so start over. */ | |
1717 | goto top; | |
1718 | else | |
1719 | bs->commands = NULL; | |
1720 | } | |
1721 | ||
1722 | executing_breakpoint_commands = 0; | |
1723 | discard_cleanups (old_chain); | |
1724 | } | |
1725 | ||
1726 | /* This is the normal print_it function for a bpstat. In the future, | |
1727 | much of this logic could (should?) be moved to bpstat_stop_status, | |
1728 | by having it set different print_it functions. | |
1729 | ||
1730 | Current scheme: When we stop, bpstat_print() is called. | |
1731 | It loops through the bpstat list of things causing this stop, | |
1732 | calling the print_it function for each one. The default | |
1733 | print_it function, used for breakpoints, is print_it_normal(). | |
1734 | (Also see print_it_noop() and print_it_done()). | |
c5aa993b | 1735 | |
c906108c SS |
1736 | Return values from this routine (used by bpstat_print() to |
1737 | decide what to do): | |
1738 | 1: Means we printed something, and we do *not* desire that | |
c5aa993b | 1739 | something to be followed by a location. |
c906108c | 1740 | 0: Means we printed something, and we *do* desire that |
c5aa993b | 1741 | something to be followed by a location. |
c906108c SS |
1742 | -1: Means we printed nothing. */ |
1743 | ||
1744 | static int | |
1745 | print_it_normal (bs) | |
1746 | bpstat bs; | |
1747 | { | |
1748 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
1749 | which has since been deleted. */ | |
1750 | if (bs->breakpoint_at == NULL | |
1751 | || (bs->breakpoint_at->type != bp_breakpoint | |
c5aa993b JM |
1752 | && bs->breakpoint_at->type != bp_catch_load |
1753 | && bs->breakpoint_at->type != bp_catch_unload | |
1754 | && bs->breakpoint_at->type != bp_catch_fork | |
1755 | && bs->breakpoint_at->type != bp_catch_vfork | |
1756 | && bs->breakpoint_at->type != bp_catch_exec | |
1757 | && bs->breakpoint_at->type != bp_catch_catch | |
1758 | && bs->breakpoint_at->type != bp_catch_throw | |
c906108c SS |
1759 | && bs->breakpoint_at->type != bp_hardware_breakpoint |
1760 | && bs->breakpoint_at->type != bp_watchpoint | |
1761 | && bs->breakpoint_at->type != bp_read_watchpoint | |
1762 | && bs->breakpoint_at->type != bp_access_watchpoint | |
1763 | && bs->breakpoint_at->type != bp_hardware_watchpoint)) | |
1764 | return -1; | |
1765 | ||
1766 | if (ep_is_shlib_catchpoint (bs->breakpoint_at)) | |
1767 | { | |
1768 | annotate_catchpoint (bs->breakpoint_at->number); | |
1769 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1770 | if (bs->breakpoint_at->type == bp_catch_load) | |
c5aa993b | 1771 | printf_filtered ("loaded"); |
c906108c | 1772 | else if (bs->breakpoint_at->type == bp_catch_unload) |
c5aa993b | 1773 | printf_filtered ("unloaded"); |
c906108c SS |
1774 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); |
1775 | return 0; | |
1776 | } | |
1777 | else if (bs->breakpoint_at->type == bp_catch_fork || | |
c5aa993b | 1778 | bs->breakpoint_at->type == bp_catch_vfork) |
c906108c SS |
1779 | { |
1780 | annotate_catchpoint (bs->breakpoint_at->number); | |
1781 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1782 | if (bs->breakpoint_at->type == bp_catch_fork) | |
c5aa993b | 1783 | printf_filtered ("forked"); |
c906108c | 1784 | else if (bs->breakpoint_at->type == bp_catch_vfork) |
c5aa993b | 1785 | printf_filtered ("vforked"); |
53a5351d JM |
1786 | printf_filtered (" process %d), ", |
1787 | bs->breakpoint_at->forked_inferior_pid); | |
c906108c SS |
1788 | return 0; |
1789 | } | |
1790 | else if (bs->breakpoint_at->type == bp_catch_exec) | |
1791 | { | |
1792 | annotate_catchpoint (bs->breakpoint_at->number); | |
1793 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
1794 | bs->breakpoint_at->number, |
1795 | bs->breakpoint_at->exec_pathname); | |
c906108c SS |
1796 | return 0; |
1797 | } | |
c5aa993b | 1798 | else if (bs->breakpoint_at->type == bp_catch_catch) |
c906108c | 1799 | { |
53a5351d JM |
1800 | if (current_exception_event && |
1801 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
1802 | { |
1803 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1804 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
1805 | bs->breakpoint_at->number); | |
c5aa993b JM |
1806 | printf_filtered ("throw location "); |
1807 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1808 | printf_filtered ("%s:%d", | |
1809 | CURRENT_EXCEPTION_THROW_FILE, | |
1810 | CURRENT_EXCEPTION_THROW_LINE); | |
1811 | else | |
1812 | printf_filtered ("unknown"); | |
1813 | ||
1814 | printf_filtered (", catch location "); | |
1815 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1816 | printf_filtered ("%s:%d", | |
1817 | CURRENT_EXCEPTION_CATCH_FILE, | |
1818 | CURRENT_EXCEPTION_CATCH_LINE); | |
1819 | else | |
1820 | printf_filtered ("unknown"); | |
1821 | ||
1822 | printf_filtered ("\n"); | |
53a5351d | 1823 | return 1; /* don't bother to print location frame info */ |
c5aa993b | 1824 | } |
c906108c | 1825 | else |
c5aa993b | 1826 | { |
53a5351d | 1827 | return -1; /* really throw, some other bpstat will handle it */ |
c5aa993b | 1828 | } |
c906108c SS |
1829 | } |
1830 | else if (bs->breakpoint_at->type == bp_catch_throw) | |
1831 | { | |
53a5351d JM |
1832 | if (current_exception_event && |
1833 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
1834 | { |
1835 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1836 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
1837 | bs->breakpoint_at->number); | |
c5aa993b JM |
1838 | printf_filtered ("throw location "); |
1839 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1840 | printf_filtered ("%s:%d", | |
1841 | CURRENT_EXCEPTION_THROW_FILE, | |
1842 | CURRENT_EXCEPTION_THROW_LINE); | |
1843 | else | |
1844 | printf_filtered ("unknown"); | |
1845 | ||
1846 | printf_filtered (", catch location "); | |
1847 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1848 | printf_filtered ("%s:%d", | |
1849 | CURRENT_EXCEPTION_CATCH_FILE, | |
1850 | CURRENT_EXCEPTION_CATCH_LINE); | |
1851 | else | |
1852 | printf_filtered ("unknown"); | |
1853 | ||
1854 | printf_filtered ("\n"); | |
53a5351d | 1855 | return 1; /* don't bother to print location frame info */ |
c5aa993b | 1856 | } |
c906108c | 1857 | else |
c5aa993b | 1858 | { |
53a5351d | 1859 | return -1; /* really catch, some other bpstat willhandle it */ |
c5aa993b | 1860 | } |
c906108c SS |
1861 | } |
1862 | ||
1863 | else if (bs->breakpoint_at->type == bp_breakpoint || | |
c5aa993b | 1864 | bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c SS |
1865 | { |
1866 | /* I think the user probably only wants to see one breakpoint | |
c5aa993b | 1867 | number, not all of them. */ |
c906108c SS |
1868 | annotate_breakpoint (bs->breakpoint_at->number); |
1869 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); | |
1870 | return 0; | |
1871 | } | |
1872 | else if ((bs->old_val != NULL) && | |
c5aa993b JM |
1873 | (bs->breakpoint_at->type == bp_watchpoint || |
1874 | bs->breakpoint_at->type == bp_access_watchpoint || | |
1875 | bs->breakpoint_at->type == bp_hardware_watchpoint)) | |
c906108c SS |
1876 | { |
1877 | annotate_watchpoint (bs->breakpoint_at->number); | |
1878 | mention (bs->breakpoint_at); | |
1879 | printf_filtered ("\nOld value = "); | |
1880 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
1881 | printf_filtered ("\nNew value = "); | |
1882 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
1883 | Val_pretty_default); | |
1884 | printf_filtered ("\n"); | |
1885 | value_free (bs->old_val); | |
1886 | bs->old_val = NULL; | |
1887 | /* More than one watchpoint may have been triggered. */ | |
1888 | return -1; | |
1889 | } | |
1890 | else if (bs->breakpoint_at->type == bp_access_watchpoint || | |
1891 | bs->breakpoint_at->type == bp_read_watchpoint) | |
1892 | { | |
1893 | mention (bs->breakpoint_at); | |
1894 | printf_filtered ("\nValue = "); | |
1895 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
c5aa993b | 1896 | Val_pretty_default); |
c906108c SS |
1897 | printf_filtered ("\n"); |
1898 | return -1; | |
1899 | } | |
53a5351d JM |
1900 | /* We can't deal with it. |
1901 | Maybe another member of the bpstat chain can. */ | |
c906108c SS |
1902 | return -1; |
1903 | } | |
1904 | ||
1905 | /* Print a message indicating what happened. | |
1906 | This is called from normal_stop(). | |
1907 | The input to this routine is the head of the bpstat list - a list | |
1908 | of the eventpoints that caused this stop. | |
1909 | This routine calls the "print_it" routine(s) associated | |
1910 | with these eventpoints. This will print (for example) | |
1911 | the "Breakpoint n," part of the output. | |
1912 | The return value of this routine is one of: | |
1913 | ||
1914 | -1: Means we printed nothing | |
1915 | 0: Means we printed something, and expect subsequent | |
c5aa993b JM |
1916 | code to print the location. An example is |
1917 | "Breakpoint 1, " which should be followed by | |
1918 | the location. | |
c906108c | 1919 | 1 : Means we printed something, but there is no need |
c5aa993b JM |
1920 | to also print the location part of the message. |
1921 | An example is the catch/throw messages, which | |
1922 | don't require a location appended to the end. */ | |
c906108c SS |
1923 | |
1924 | int | |
1925 | bpstat_print (bs) | |
1926 | bpstat bs; | |
1927 | { | |
1928 | int val; | |
c5aa993b | 1929 | |
c906108c SS |
1930 | if (bs == NULL) |
1931 | return -1; | |
1932 | ||
1933 | val = (*bs->print_it) (bs); | |
1934 | if (val >= 0) | |
1935 | return val; | |
c5aa993b | 1936 | |
c906108c | 1937 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
1938 | (Currently all watchpoints go on the bpstat whether hit or not. |
1939 | That probably could (should) be changed, provided care is taken | |
c906108c SS |
1940 | with respect to bpstat_explains_signal). */ |
1941 | if (bs->next) | |
1942 | return bpstat_print (bs->next); | |
1943 | ||
1944 | /* We reached the end of the chain without printing anything. */ | |
1945 | return -1; | |
1946 | } | |
1947 | ||
1948 | /* Evaluate the expression EXP and return 1 if value is zero. | |
1949 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
1950 | The argument is a "struct expression *" that has been cast to char * to | |
1951 | make it pass through catch_errors. */ | |
1952 | ||
1953 | static int | |
1954 | breakpoint_cond_eval (exp) | |
1955 | PTR exp; | |
1956 | { | |
1957 | value_ptr mark = value_mark (); | |
c5aa993b | 1958 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
1959 | value_free_to_mark (mark); |
1960 | return i; | |
1961 | } | |
1962 | ||
1963 | /* Allocate a new bpstat and chain it to the current one. */ | |
1964 | ||
1965 | static bpstat | |
1966 | bpstat_alloc (b, cbs) | |
1967 | register struct breakpoint *b; | |
c5aa993b | 1968 | bpstat cbs; /* Current "bs" value */ |
c906108c SS |
1969 | { |
1970 | bpstat bs; | |
1971 | ||
1972 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
1973 | cbs->next = bs; | |
1974 | bs->breakpoint_at = b; | |
1975 | /* If the condition is false, etc., don't do the commands. */ | |
1976 | bs->commands = NULL; | |
1977 | bs->old_val = NULL; | |
1978 | bs->print_it = print_it_normal; | |
1979 | return bs; | |
1980 | } | |
1981 | \f | |
1982 | /* Possible return values for watchpoint_check (this can't be an enum | |
1983 | because of check_errors). */ | |
1984 | /* The watchpoint has been deleted. */ | |
1985 | #define WP_DELETED 1 | |
1986 | /* The value has changed. */ | |
1987 | #define WP_VALUE_CHANGED 2 | |
1988 | /* The value has not changed. */ | |
1989 | #define WP_VALUE_NOT_CHANGED 3 | |
1990 | ||
1991 | #define BP_TEMPFLAG 1 | |
1992 | #define BP_HARDWAREFLAG 2 | |
1993 | ||
1994 | /* Check watchpoint condition. */ | |
1995 | ||
1996 | static int | |
1997 | watchpoint_check (p) | |
1998 | PTR p; | |
1999 | { | |
2000 | bpstat bs = (bpstat) p; | |
2001 | struct breakpoint *b; | |
2002 | struct frame_info *fr; | |
2003 | int within_current_scope; | |
2004 | ||
2005 | b = bs->breakpoint_at; | |
2006 | ||
2007 | if (b->exp_valid_block == NULL) | |
2008 | within_current_scope = 1; | |
2009 | else | |
2010 | { | |
2011 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2012 | any chance of handling watchpoints on local variables, we'll need |
2013 | the frame chain (so we can determine if we're in scope). */ | |
2014 | reinit_frame_cache (); | |
c906108c SS |
2015 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
2016 | within_current_scope = (fr != NULL); | |
2017 | if (within_current_scope) | |
2018 | /* If we end up stopping, the current frame will get selected | |
2019 | in normal_stop. So this call to select_frame won't affect | |
2020 | the user. */ | |
2021 | select_frame (fr, -1); | |
2022 | } | |
c5aa993b | 2023 | |
c906108c SS |
2024 | if (within_current_scope) |
2025 | { | |
2026 | /* We use value_{,free_to_}mark because it could be a | |
2027 | *long* time before we return to the command level and | |
c5aa993b JM |
2028 | call free_all_values. We can't call free_all_values because |
2029 | we might be in the middle of evaluating a function call. */ | |
c906108c SS |
2030 | |
2031 | value_ptr mark = value_mark (); | |
2032 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
2033 | if (!value_equal (b->val, new_val)) | |
2034 | { | |
2035 | release_value (new_val); | |
2036 | value_free_to_mark (mark); | |
2037 | bs->old_val = b->val; | |
2038 | b->val = new_val; | |
2039 | /* We will stop here */ | |
2040 | return WP_VALUE_CHANGED; | |
2041 | } | |
2042 | else | |
2043 | { | |
2044 | /* Nothing changed, don't do anything. */ | |
2045 | value_free_to_mark (mark); | |
2046 | /* We won't stop here */ | |
2047 | return WP_VALUE_NOT_CHANGED; | |
2048 | } | |
2049 | } | |
2050 | else | |
2051 | { | |
2052 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2053 | if we temporarily ignored the watchpoint, then when |
2054 | we reenter the block in which it is valid it contains | |
2055 | garbage (in the case of a function, it may have two | |
2056 | garbage values, one before and one after the prologue). | |
2057 | So we can't even detect the first assignment to it and | |
2058 | watch after that (since the garbage may or may not equal | |
2059 | the first value assigned). */ | |
c906108c SS |
2060 | printf_filtered ("\ |
2061 | Watchpoint %d deleted because the program has left the block in\n\ | |
2062 | which its expression is valid.\n", bs->breakpoint_at->number); | |
2063 | if (b->related_breakpoint) | |
2064 | b->related_breakpoint->disposition = del_at_next_stop; | |
2065 | b->disposition = del_at_next_stop; | |
2066 | ||
2067 | return WP_DELETED; | |
2068 | } | |
2069 | } | |
2070 | ||
2071 | /* This is used when everything which needs to be printed has | |
2072 | already been printed. But we still want to print the frame. */ | |
2073 | ||
2074 | /* Background: When we stop, bpstat_print() is called. | |
2075 | It loops through the bpstat list of things causing this stop, | |
2076 | calling the print_it function for each one. The default | |
2077 | print_it function, used for breakpoints, is print_it_normal(). | |
2078 | Also see print_it_noop() and print_it_done() are the other | |
2079 | two possibilities. See comments in bpstat_print() and | |
2080 | in header of print_it_normal() for more detail. */ | |
2081 | ||
2082 | static int | |
2083 | print_it_done (bs) | |
2084 | bpstat bs; | |
2085 | { | |
2086 | return 0; | |
2087 | } | |
2088 | ||
2089 | /* This is used when nothing should be printed for this bpstat entry. */ | |
2090 | /* Background: When we stop, bpstat_print() is called. | |
2091 | It loops through the bpstat list of things causing this stop, | |
2092 | calling the print_it function for each one. The default | |
2093 | print_it function, used for breakpoints, is print_it_normal(). | |
2094 | Also see print_it_noop() and print_it_done() are the other | |
2095 | two possibilities. See comments in bpstat_print() and | |
2096 | in header of print_it_normal() for more detail. */ | |
2097 | ||
2098 | static int | |
2099 | print_it_noop (bs) | |
2100 | bpstat bs; | |
2101 | { | |
2102 | return -1; | |
2103 | } | |
2104 | ||
2105 | /* Get a bpstat associated with having just stopped at address *PC | |
2106 | and frame address CORE_ADDRESS. Update *PC to point at the | |
2107 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
2108 | if this is known to not be a real breakpoint (it could still be a | |
2109 | watchpoint, though). */ | |
2110 | ||
2111 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2112 | don't understand this stop. Result is a chain of bpstat's such that: | |
2113 | ||
c5aa993b | 2114 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2115 | |
c5aa993b | 2116 | if we understand why we stopped, the result is not null. |
c906108c | 2117 | |
c5aa993b JM |
2118 | Each element of the chain refers to a particular breakpoint or |
2119 | watchpoint at which we have stopped. (We may have stopped for | |
2120 | several reasons concurrently.) | |
c906108c | 2121 | |
c5aa993b JM |
2122 | Each element of the chain has valid next, breakpoint_at, |
2123 | commands, FIXME??? fields. */ | |
c906108c SS |
2124 | |
2125 | bpstat | |
2126 | bpstat_stop_status (pc, not_a_breakpoint) | |
2127 | CORE_ADDR *pc; | |
2128 | int not_a_breakpoint; | |
2129 | { | |
2130 | register struct breakpoint *b, *temp; | |
2131 | CORE_ADDR bp_addr; | |
2132 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2133 | int real_breakpoint = 0; | |
2134 | /* Root of the chain of bpstat's */ | |
2135 | struct bpstats root_bs[1]; | |
2136 | /* Pointer to the last thing in the chain currently. */ | |
2137 | bpstat bs = root_bs; | |
2138 | static char message1[] = | |
c5aa993b JM |
2139 | "Error evaluating expression for watchpoint %d\n"; |
2140 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c SS |
2141 | |
2142 | /* Get the address where the breakpoint would have been. */ | |
2143 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
2144 | ||
2145 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
2146 | { |
2147 | if (b->enable == disabled | |
2148 | || b->enable == shlib_disabled | |
2149 | || b->enable == call_disabled) | |
2150 | continue; | |
2151 | ||
2152 | if (b->type != bp_watchpoint | |
2153 | && b->type != bp_hardware_watchpoint | |
2154 | && b->type != bp_read_watchpoint | |
2155 | && b->type != bp_access_watchpoint | |
2156 | && b->type != bp_hardware_breakpoint | |
2157 | && b->type != bp_catch_fork | |
2158 | && b->type != bp_catch_vfork | |
2159 | && b->type != bp_catch_exec | |
2160 | && b->type != bp_catch_catch | |
2161 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
2162 | if (b->address != bp_addr || /* address doesn't match or */ | |
2163 | (overlay_debugging && /* overlay doesn't match */ | |
2164 | section_is_overlay (b->section) && | |
2165 | !section_is_mapped (b->section))) | |
c906108c SS |
2166 | continue; |
2167 | ||
c5aa993b JM |
2168 | if (b->type == bp_hardware_breakpoint |
2169 | && b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2170 | continue; | |
2171 | ||
2172 | if (b->type != bp_watchpoint | |
2173 | && b->type != bp_hardware_watchpoint | |
2174 | && b->type != bp_read_watchpoint | |
2175 | && b->type != bp_access_watchpoint | |
2176 | && not_a_breakpoint) | |
2177 | continue; | |
2178 | ||
2179 | /* Is this a catchpoint of a load or unload? If so, did we | |
2180 | get a load or unload of the specified library? If not, | |
2181 | ignore it. */ | |
2182 | if ((b->type == bp_catch_load) | |
c906108c | 2183 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
c5aa993b JM |
2184 | && (!SOLIB_HAVE_LOAD_EVENT (inferior_pid) |
2185 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2186 | && (strcmp (b->dll_pathname, |
2187 | SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2188 | != 0))) | |
c906108c | 2189 | #endif |
c5aa993b JM |
2190 | ) |
2191 | continue; | |
2192 | ||
2193 | if ((b->type == bp_catch_unload) | |
c906108c | 2194 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
c5aa993b JM |
2195 | && (!SOLIB_HAVE_UNLOAD_EVENT (inferior_pid) |
2196 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2197 | && (strcmp (b->dll_pathname, |
2198 | SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2199 | != 0))) | |
c906108c | 2200 | #endif |
c5aa993b JM |
2201 | ) |
2202 | continue; | |
c906108c | 2203 | |
c5aa993b JM |
2204 | if ((b->type == bp_catch_fork) |
2205 | && !target_has_forked (inferior_pid, &b->forked_inferior_pid)) | |
2206 | continue; | |
c906108c | 2207 | |
c5aa993b JM |
2208 | if ((b->type == bp_catch_vfork) |
2209 | && !target_has_vforked (inferior_pid, &b->forked_inferior_pid)) | |
2210 | continue; | |
c906108c | 2211 | |
c5aa993b JM |
2212 | if ((b->type == bp_catch_exec) |
2213 | && !target_has_execd (inferior_pid, &b->exec_pathname)) | |
2214 | continue; | |
c906108c | 2215 | |
c5aa993b JM |
2216 | if (ep_is_exception_catchpoint (b) && |
2217 | !(current_exception_event = target_get_current_exception_event ())) | |
2218 | continue; | |
c906108c | 2219 | |
c5aa993b JM |
2220 | /* Come here if it's a watchpoint, or if the break address matches */ |
2221 | ||
2222 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2223 | ||
2224 | /* Watchpoints may change this, if not found to have triggered. */ | |
2225 | bs->stop = 1; | |
2226 | bs->print = 1; | |
2227 | ||
2228 | sprintf (message, message1, b->number); | |
53a5351d JM |
2229 | if (b->type == bp_watchpoint || |
2230 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2231 | { |
53a5351d JM |
2232 | switch (catch_errors (watchpoint_check, bs, message, |
2233 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2234 | { |
2235 | case WP_DELETED: | |
2236 | /* We've already printed what needs to be printed. */ | |
2237 | bs->print_it = print_it_done; | |
2238 | /* Stop. */ | |
2239 | break; | |
2240 | case WP_VALUE_CHANGED: | |
2241 | /* Stop. */ | |
2242 | ++(b->hit_count); | |
2243 | break; | |
2244 | case WP_VALUE_NOT_CHANGED: | |
2245 | /* Don't stop. */ | |
2246 | bs->print_it = print_it_noop; | |
2247 | bs->stop = 0; | |
2248 | /* Don't consider this a hit. */ | |
2249 | --(b->hit_count); | |
2250 | continue; | |
2251 | default: | |
2252 | /* Can't happen. */ | |
2253 | /* FALLTHROUGH */ | |
2254 | case 0: | |
2255 | /* Error from catch_errors. */ | |
2256 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2257 | if (b->related_breakpoint) | |
2258 | b->related_breakpoint->disposition = del_at_next_stop; | |
2259 | b->disposition = del_at_next_stop; | |
2260 | /* We've already printed what needs to be printed. */ | |
2261 | bs->print_it = print_it_done; | |
2262 | ||
2263 | /* Stop. */ | |
2264 | break; | |
2265 | } | |
2266 | } | |
53a5351d JM |
2267 | else if (b->type == bp_read_watchpoint || |
2268 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2269 | { |
2270 | CORE_ADDR addr; | |
2271 | value_ptr v; | |
2272 | int found = 0; | |
2273 | ||
2274 | addr = target_stopped_data_address (); | |
2275 | if (addr == 0) | |
2276 | continue; | |
2277 | for (v = b->val_chain; v; v = v->next) | |
2278 | { | |
2279 | if (v->lval == lval_memory) | |
2280 | { | |
2281 | CORE_ADDR vaddr; | |
2282 | ||
2283 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
53a5351d JM |
2284 | /* Exact match not required. Within range is sufficient. |
2285 | */ | |
2286 | if (addr >= vaddr && | |
2287 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
c5aa993b JM |
2288 | found = 1; |
2289 | } | |
2290 | } | |
2291 | if (found) | |
53a5351d JM |
2292 | switch (catch_errors (watchpoint_check, bs, message, |
2293 | RETURN_MASK_ALL)) | |
c906108c SS |
2294 | { |
2295 | case WP_DELETED: | |
2296 | /* We've already printed what needs to be printed. */ | |
2297 | bs->print_it = print_it_done; | |
2298 | /* Stop. */ | |
2299 | break; | |
2300 | case WP_VALUE_CHANGED: | |
c5aa993b | 2301 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2302 | /* Stop. */ |
2303 | ++(b->hit_count); | |
2304 | break; | |
c906108c SS |
2305 | default: |
2306 | /* Can't happen. */ | |
c906108c SS |
2307 | case 0: |
2308 | /* Error from catch_errors. */ | |
2309 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2310 | if (b->related_breakpoint) | |
2311 | b->related_breakpoint->disposition = del_at_next_stop; | |
2312 | b->disposition = del_at_next_stop; | |
2313 | /* We've already printed what needs to be printed. */ | |
2314 | bs->print_it = print_it_done; | |
c906108c SS |
2315 | break; |
2316 | } | |
53a5351d JM |
2317 | else /* found == 0 */ |
2318 | { | |
2319 | /* This is a case where some watchpoint(s) triggered, | |
2320 | but not at the address of this watchpoint (FOUND | |
2321 | was left zero). So don't print anything for this | |
2322 | watchpoint. */ | |
2323 | bs->print_it = print_it_noop; | |
2324 | bs->stop = 0; | |
2325 | continue; | |
2326 | } | |
c5aa993b JM |
2327 | } |
2328 | else | |
2329 | { | |
2330 | /* By definition, an encountered breakpoint is a triggered | |
2331 | breakpoint. */ | |
2332 | ++(b->hit_count); | |
c906108c | 2333 | |
c5aa993b JM |
2334 | real_breakpoint = 1; |
2335 | } | |
2336 | ||
2337 | if (b->frame && b->frame != (get_current_frame ())->frame && | |
2338 | (b->type == bp_step_resume && | |
2339 | (INNER_THAN (get_current_frame ()->frame, b->frame)))) | |
2340 | bs->stop = 0; | |
2341 | else | |
2342 | { | |
2343 | int value_is_zero = 0; | |
2344 | ||
2345 | if (b->cond) | |
2346 | { | |
2347 | /* Need to select the frame, with all that implies | |
2348 | so that the conditions will have the right context. */ | |
2349 | select_frame (get_current_frame (), 0); | |
2350 | value_is_zero | |
2351 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2352 | "Error in testing breakpoint condition:\n", | |
2353 | RETURN_MASK_ALL); | |
2354 | /* FIXME-someday, should give breakpoint # */ | |
2355 | free_all_values (); | |
2356 | } | |
2357 | if (b->cond && value_is_zero) | |
2358 | { | |
2359 | bs->stop = 0; | |
2360 | /* Don't consider this a hit. */ | |
2361 | --(b->hit_count); | |
2362 | } | |
2363 | else if (b->ignore_count > 0) | |
2364 | { | |
2365 | b->ignore_count--; | |
2366 | bs->stop = 0; | |
2367 | } | |
2368 | else | |
2369 | { | |
2370 | /* We will stop here */ | |
2371 | if (b->disposition == disable) | |
2372 | b->enable = disabled; | |
2373 | bs->commands = b->commands; | |
2374 | if (b->silent) | |
2375 | bs->print = 0; | |
2376 | if (bs->commands && | |
2377 | (STREQ ("silent", bs->commands->line) || | |
2378 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2379 | { | |
2380 | bs->commands = bs->commands->next; | |
c906108c | 2381 | bs->print = 0; |
c5aa993b JM |
2382 | } |
2383 | } | |
2384 | } | |
2385 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2386 | if (bs->stop == 0 || bs->print == 0) | |
2387 | bs->print_it = print_it_noop; | |
2388 | } | |
c906108c SS |
2389 | |
2390 | bs->next = NULL; /* Terminate the chain */ | |
2391 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2392 | ||
2393 | if (real_breakpoint && bs) | |
2394 | { | |
c5aa993b | 2395 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2396 | { |
c5aa993b | 2397 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2398 | { |
2399 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2400 | write_pc (*pc); | |
2401 | } | |
2402 | } | |
2403 | else | |
2404 | { | |
2405 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2406 | { | |
2407 | *pc = bp_addr; | |
2408 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2409 | SHIFT_INST_REGS (); |
c906108c SS |
2410 | #else /* No SHIFT_INST_REGS. */ |
2411 | write_pc (bp_addr); | |
2412 | #endif /* No SHIFT_INST_REGS. */ | |
2413 | } | |
2414 | } | |
2415 | } | |
2416 | ||
2417 | /* The value of a hardware watchpoint hasn't changed, but the | |
2418 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2419 | if (bs && !bs->stop && |
c906108c SS |
2420 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2421 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2422 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2423 | { | |
2424 | remove_breakpoints (); | |
2425 | insert_breakpoints (); | |
2426 | } | |
2427 | return bs; | |
2428 | } | |
2429 | \f | |
2430 | /* Tell what to do about this bpstat. */ | |
2431 | struct bpstat_what | |
2432 | bpstat_what (bs) | |
2433 | bpstat bs; | |
2434 | { | |
2435 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2436 | enum class |
2437 | { | |
2438 | /* This bpstat element has no effect on the main_action. */ | |
2439 | no_effect = 0, | |
2440 | ||
2441 | /* There was a watchpoint, stop but don't print. */ | |
2442 | wp_silent, | |
c906108c | 2443 | |
c5aa993b JM |
2444 | /* There was a watchpoint, stop and print. */ |
2445 | wp_noisy, | |
c906108c | 2446 | |
c5aa993b JM |
2447 | /* There was a breakpoint but we're not stopping. */ |
2448 | bp_nostop, | |
c906108c | 2449 | |
c5aa993b JM |
2450 | /* There was a breakpoint, stop but don't print. */ |
2451 | bp_silent, | |
c906108c | 2452 | |
c5aa993b JM |
2453 | /* There was a breakpoint, stop and print. */ |
2454 | bp_noisy, | |
c906108c | 2455 | |
c5aa993b JM |
2456 | /* We hit the longjmp breakpoint. */ |
2457 | long_jump, | |
c906108c | 2458 | |
c5aa993b JM |
2459 | /* We hit the longjmp_resume breakpoint. */ |
2460 | long_resume, | |
c906108c | 2461 | |
c5aa993b JM |
2462 | /* We hit the step_resume breakpoint. */ |
2463 | step_resume, | |
c906108c | 2464 | |
c5aa993b JM |
2465 | /* We hit the through_sigtramp breakpoint. */ |
2466 | through_sig, | |
c906108c | 2467 | |
c5aa993b JM |
2468 | /* We hit the shared library event breakpoint. */ |
2469 | shlib_event, | |
c906108c | 2470 | |
c5aa993b JM |
2471 | /* We caught a shared library event. */ |
2472 | catch_shlib_event, | |
c906108c | 2473 | |
c5aa993b JM |
2474 | /* This is just used to count how many enums there are. */ |
2475 | class_last | |
c906108c SS |
2476 | }; |
2477 | ||
2478 | /* Here is the table which drives this routine. So that we can | |
2479 | format it pretty, we define some abbreviations for the | |
2480 | enum bpstat_what codes. */ | |
2481 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2482 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2483 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2484 | #define sgl BPSTAT_WHAT_SINGLE | |
2485 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2486 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2487 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2488 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2489 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2490 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2491 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2492 | ||
2493 | /* "Can't happen." Might want to print an error message. | |
2494 | abort() is not out of the question, but chances are GDB is just | |
2495 | a bit confused, not unusable. */ | |
2496 | #define err BPSTAT_WHAT_STOP_NOISY | |
2497 | ||
2498 | /* Given an old action and a class, come up with a new action. */ | |
2499 | /* One interesting property of this table is that wp_silent is the same | |
2500 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2501 | after stopping, the check for whether to step over a breakpoint | |
2502 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2503 | reference to how we stopped. We retain separate wp_silent and |
2504 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2505 | |
2506 | Another possibly interesting property of this table is that | |
2507 | there's a partial ordering, priority-like, of the actions. Once | |
2508 | you've decided that some action is appropriate, you'll never go | |
2509 | back and decide something of a lower priority is better. The | |
2510 | ordering is: | |
2511 | ||
c5aa993b JM |
2512 | kc < clr sgl shl slr sn sr ss ts |
2513 | sgl < clrs shl shlr slr sn sr ss ts | |
2514 | slr < err shl shlr sn sr ss ts | |
2515 | clr < clrs err shl shlr sn sr ss ts | |
2516 | clrs < err shl shlr sn sr ss ts | |
2517 | ss < shl shlr sn sr ts | |
2518 | sn < shl shlr sr ts | |
2519 | sr < shl shlr ts | |
2520 | shl < shlr | |
2521 | ts < | |
2522 | shlr < | |
2523 | ||
43ff13b4 JM |
2524 | What I think this means is that we don't need a damned table |
2525 | here. If you just put the rows and columns in the right order, | |
2526 | it'd look awfully regular. We could simply walk the bpstat list | |
2527 | and choose the highest priority action we find, with a little | |
2528 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2529 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2530 | is messy anyway). */ | |
c906108c SS |
2531 | |
2532 | /* step_resume entries: a step resume breakpoint overrides another | |
2533 | breakpoint of signal handling (see comment in wait_for_inferior | |
2534 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
2535 | /* We handle the through_sigtramp_breakpoint the same way; having both | |
2536 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2537 | ||
2538 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2539 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2540 | { | |
2541 | /* old action */ | |
2542 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2543 | */ | |
2544 | /*no_effect */ | |
2545 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2546 | /*wp_silent */ | |
2547 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2548 | /*wp_noisy */ | |
2549 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2550 | /*bp_nostop */ | |
2551 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2552 | /*bp_silent */ | |
2553 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2554 | /*bp_noisy */ | |
2555 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2556 | /*long_jump */ | |
2557 | {slr, ss, sn, slr, err, err, err, sr, ts, shl, shlr}, | |
2558 | /*long_resume */ | |
2559 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2560 | /*step_resume */ | |
2561 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2562 | /*through_sig */ | |
2563 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2564 | /*shlib */ | |
2565 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2566 | /*catch_shlib */ | |
2567 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2568 | }; | |
c906108c SS |
2569 | |
2570 | #undef kc | |
2571 | #undef ss | |
2572 | #undef sn | |
2573 | #undef sgl | |
2574 | #undef slr | |
2575 | #undef clr | |
2576 | #undef clrs | |
2577 | #undef err | |
2578 | #undef sr | |
2579 | #undef ts | |
2580 | #undef shl | |
2581 | #undef shlr | |
2582 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2583 | struct bpstat_what retval; | |
2584 | ||
2585 | retval.call_dummy = 0; | |
2586 | for (; bs != NULL; bs = bs->next) | |
2587 | { | |
2588 | enum class bs_class = no_effect; | |
2589 | if (bs->breakpoint_at == NULL) | |
2590 | /* I suspect this can happen if it was a momentary breakpoint | |
2591 | which has since been deleted. */ | |
2592 | continue; | |
2593 | switch (bs->breakpoint_at->type) | |
2594 | { | |
2595 | case bp_none: | |
2596 | continue; | |
2597 | ||
2598 | case bp_breakpoint: | |
2599 | case bp_hardware_breakpoint: | |
2600 | case bp_until: | |
2601 | case bp_finish: | |
2602 | if (bs->stop) | |
2603 | { | |
2604 | if (bs->print) | |
2605 | bs_class = bp_noisy; | |
2606 | else | |
2607 | bs_class = bp_silent; | |
2608 | } | |
2609 | else | |
2610 | bs_class = bp_nostop; | |
2611 | break; | |
2612 | case bp_watchpoint: | |
2613 | case bp_hardware_watchpoint: | |
2614 | case bp_read_watchpoint: | |
2615 | case bp_access_watchpoint: | |
2616 | if (bs->stop) | |
2617 | { | |
2618 | if (bs->print) | |
2619 | bs_class = wp_noisy; | |
2620 | else | |
2621 | bs_class = wp_silent; | |
2622 | } | |
2623 | else | |
53a5351d JM |
2624 | /* There was a watchpoint, but we're not stopping. |
2625 | This requires no further action. */ | |
c906108c SS |
2626 | bs_class = no_effect; |
2627 | break; | |
2628 | case bp_longjmp: | |
2629 | bs_class = long_jump; | |
2630 | break; | |
2631 | case bp_longjmp_resume: | |
2632 | bs_class = long_resume; | |
2633 | break; | |
2634 | case bp_step_resume: | |
2635 | if (bs->stop) | |
2636 | { | |
2637 | bs_class = step_resume; | |
2638 | } | |
2639 | else | |
2640 | /* It is for the wrong frame. */ | |
2641 | bs_class = bp_nostop; | |
2642 | break; | |
2643 | case bp_through_sigtramp: | |
2644 | bs_class = through_sig; | |
2645 | break; | |
2646 | case bp_watchpoint_scope: | |
2647 | bs_class = bp_nostop; | |
2648 | break; | |
c5aa993b JM |
2649 | case bp_shlib_event: |
2650 | bs_class = shlib_event; | |
2651 | break; | |
2652 | case bp_catch_load: | |
2653 | case bp_catch_unload: | |
2654 | /* Only if this catchpoint triggered should we cause the | |
2655 | step-out-of-dld behaviour. Otherwise, we ignore this | |
2656 | catchpoint. */ | |
2657 | if (bs->stop) | |
2658 | bs_class = catch_shlib_event; | |
2659 | else | |
2660 | bs_class = no_effect; | |
2661 | break; | |
2662 | case bp_catch_fork: | |
2663 | case bp_catch_vfork: | |
2664 | case bp_catch_exec: | |
2665 | if (bs->stop) | |
2666 | { | |
2667 | if (bs->print) | |
2668 | bs_class = bp_noisy; | |
2669 | else | |
2670 | bs_class = bp_silent; | |
2671 | } | |
2672 | else | |
53a5351d JM |
2673 | /* There was a catchpoint, but we're not stopping. |
2674 | This requires no further action. */ | |
c5aa993b JM |
2675 | bs_class = no_effect; |
2676 | break; | |
2677 | case bp_catch_catch: | |
2678 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
2679 | bs_class = bp_nostop; | |
2680 | else if (bs->stop) | |
2681 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2682 | break; | |
2683 | case bp_catch_throw: | |
2684 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
2685 | bs_class = bp_nostop; | |
2686 | else if (bs->stop) | |
2687 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 2688 | break; |
c906108c | 2689 | case bp_call_dummy: |
53a5351d JM |
2690 | /* Make sure the action is stop (silent or noisy), |
2691 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
2692 | bs_class = bp_silent; |
2693 | retval.call_dummy = 1; | |
2694 | break; | |
2695 | } | |
c5aa993b | 2696 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
2697 | } |
2698 | retval.main_action = current_action; | |
2699 | return retval; | |
2700 | } | |
2701 | ||
2702 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
2703 | without hardware support). This isn't related to a specific bpstat, | |
2704 | just to things like whether watchpoints are set. */ | |
2705 | ||
c5aa993b | 2706 | int |
c906108c SS |
2707 | bpstat_should_step () |
2708 | { | |
2709 | struct breakpoint *b; | |
2710 | ALL_BREAKPOINTS (b) | |
2711 | if (b->enable == enabled && b->type == bp_watchpoint) | |
c5aa993b | 2712 | return 1; |
c906108c SS |
2713 | return 0; |
2714 | } | |
2715 | ||
2716 | /* Nonzero if there are enabled hardware watchpoints. */ | |
2717 | int | |
2718 | bpstat_have_active_hw_watchpoints () | |
2719 | { | |
2720 | struct breakpoint *b; | |
2721 | ALL_BREAKPOINTS (b) | |
2722 | if ((b->enable == enabled) && | |
c5aa993b JM |
2723 | (b->inserted) && |
2724 | ((b->type == bp_hardware_watchpoint) || | |
2725 | (b->type == bp_read_watchpoint) || | |
2726 | (b->type == bp_access_watchpoint))) | |
2727 | return 1; | |
c906108c SS |
2728 | return 0; |
2729 | } | |
c906108c | 2730 | \f |
c5aa993b | 2731 | |
c906108c SS |
2732 | /* Given a bpstat that records zero or more triggered eventpoints, this |
2733 | function returns another bpstat which contains only the catchpoints | |
2734 | on that first list, if any. */ | |
2735 | void | |
2736 | bpstat_get_triggered_catchpoints (ep_list, cp_list) | |
c5aa993b JM |
2737 | bpstat ep_list; |
2738 | bpstat *cp_list; | |
2739 | { | |
2740 | struct bpstats root_bs[1]; | |
2741 | bpstat bs = root_bs; | |
2742 | struct breakpoint *ep; | |
2743 | char *dll_pathname; | |
2744 | ||
c906108c SS |
2745 | bpstat_clear (cp_list); |
2746 | root_bs->next = NULL; | |
c5aa993b JM |
2747 | |
2748 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
2749 | { |
2750 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
2751 | ep = ep_list->breakpoint_at; | |
2752 | if (ep == NULL) | |
c5aa993b JM |
2753 | break; |
2754 | if ((ep->type != bp_catch_load) && | |
2755 | (ep->type != bp_catch_unload) && | |
2756 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
2757 | (ep->type != bp_catch_throw)) |
2758 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
2759 | continue; |
2760 | ||
c906108c SS |
2761 | /* Yes; add it to the list. */ |
2762 | bs = bpstat_alloc (ep, bs); | |
2763 | *bs = *ep_list; | |
2764 | bs->next = NULL; | |
2765 | bs = root_bs->next; | |
c5aa993b | 2766 | |
c906108c SS |
2767 | #if defined(SOLIB_ADD) |
2768 | /* Also, for each triggered catchpoint, tag it with the name of | |
2769 | the library that caused this trigger. (We copy the name now, | |
2770 | because it's only guaranteed to be available NOW, when the | |
2771 | catchpoint triggers. Clients who may wish to know the name | |
2772 | later must get it from the catchpoint itself.) */ | |
2773 | if (ep->triggered_dll_pathname != NULL) | |
c5aa993b | 2774 | free (ep->triggered_dll_pathname); |
c906108c | 2775 | if (ep->type == bp_catch_load) |
c5aa993b | 2776 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c | 2777 | else |
c5aa993b | 2778 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c SS |
2779 | #else |
2780 | dll_pathname = NULL; | |
2781 | #endif | |
2782 | if (dll_pathname) | |
2783 | { | |
53a5351d JM |
2784 | ep->triggered_dll_pathname = (char *) |
2785 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
2786 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
2787 | } | |
2788 | else | |
2789 | ep->triggered_dll_pathname = NULL; | |
2790 | } | |
c5aa993b | 2791 | |
c906108c SS |
2792 | *cp_list = bs; |
2793 | } | |
2794 | ||
2795 | /* Print information on breakpoint number BNUM, or -1 if all. | |
2796 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
2797 | is nonzero, process only watchpoints. */ | |
2798 | ||
c5aa993b JM |
2799 | typedef struct |
2800 | { | |
2801 | enum bptype type; | |
2802 | char *description; | |
2803 | } | |
2804 | ep_type_description_t; | |
c906108c SS |
2805 | |
2806 | static void | |
2807 | breakpoint_1 (bnum, allflag) | |
2808 | int bnum; | |
2809 | int allflag; | |
2810 | { | |
2811 | register struct breakpoint *b; | |
2812 | register struct command_line *l; | |
2813 | register struct symbol *sym; | |
c5aa993b | 2814 | CORE_ADDR last_addr = (CORE_ADDR) - 1; |
c906108c | 2815 | int found_a_breakpoint = 0; |
c5aa993b | 2816 | static ep_type_description_t bptypes[] = |
c906108c | 2817 | { |
c5aa993b JM |
2818 | {bp_none, "?deleted?"}, |
2819 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 2820 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
2821 | {bp_until, "until"}, |
2822 | {bp_finish, "finish"}, | |
2823 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 2824 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
2825 | {bp_read_watchpoint, "read watchpoint"}, |
2826 | {bp_access_watchpoint, "acc watchpoint"}, | |
2827 | {bp_longjmp, "longjmp"}, | |
2828 | {bp_longjmp_resume, "longjmp resume"}, | |
2829 | {bp_step_resume, "step resume"}, | |
2830 | {bp_through_sigtramp, "sigtramp"}, | |
2831 | {bp_watchpoint_scope, "watchpoint scope"}, | |
2832 | {bp_call_dummy, "call dummy"}, | |
2833 | {bp_shlib_event, "shlib events"}, | |
2834 | {bp_catch_load, "catch load"}, | |
2835 | {bp_catch_unload, "catch unload"}, | |
2836 | {bp_catch_fork, "catch fork"}, | |
2837 | {bp_catch_vfork, "catch vfork"}, | |
2838 | {bp_catch_exec, "catch exec"}, | |
2839 | {bp_catch_catch, "catch catch"}, | |
2840 | {bp_catch_throw, "catch throw"} | |
2841 | }; | |
2842 | ||
2843 | static char *bpdisps[] = | |
2844 | {"del", "dstp", "dis", "keep"}; | |
c906108c SS |
2845 | static char bpenables[] = "nyn"; |
2846 | char wrap_indent[80]; | |
2847 | ||
392a587b | 2848 | |
53a5351d | 2849 | |
c906108c SS |
2850 | ALL_BREAKPOINTS (b) |
2851 | if (bnum == -1 | |
2852 | || bnum == b->number) | |
c5aa993b | 2853 | { |
c906108c | 2854 | /* We only print out user settable breakpoints unless the allflag is set. */ |
c5aa993b JM |
2855 | if (!allflag |
2856 | && b->type != bp_breakpoint | |
2857 | && b->type != bp_catch_load | |
2858 | && b->type != bp_catch_unload | |
2859 | && b->type != bp_catch_fork | |
2860 | && b->type != bp_catch_vfork | |
2861 | && b->type != bp_catch_exec | |
2862 | && b->type != bp_catch_catch | |
2863 | && b->type != bp_catch_throw | |
2864 | && b->type != bp_hardware_breakpoint | |
2865 | && b->type != bp_watchpoint | |
2866 | && b->type != bp_read_watchpoint | |
2867 | && b->type != bp_access_watchpoint | |
2868 | && b->type != bp_hardware_watchpoint) | |
2869 | continue; | |
c906108c | 2870 | |
c5aa993b JM |
2871 | if (!found_a_breakpoint++) |
2872 | { | |
2873 | annotate_breakpoints_headers (); | |
2874 | ||
2875 | annotate_field (0); | |
2876 | printf_filtered ("Num "); | |
2877 | annotate_field (1); | |
2878 | printf_filtered ("Type "); | |
2879 | annotate_field (2); | |
2880 | printf_filtered ("Disp "); | |
2881 | annotate_field (3); | |
2882 | printf_filtered ("Enb "); | |
2883 | if (addressprint) | |
2884 | { | |
2885 | annotate_field (4); | |
2886 | printf_filtered ("Address "); | |
2887 | } | |
2888 | annotate_field (5); | |
2889 | printf_filtered ("What\n"); | |
c906108c | 2890 | |
c5aa993b JM |
2891 | annotate_breakpoints_table (); |
2892 | } | |
c906108c | 2893 | |
c5aa993b JM |
2894 | annotate_record (); |
2895 | annotate_field (0); | |
2896 | printf_filtered ("%-3d ", b->number); | |
2897 | annotate_field (1); | |
2898 | if ((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
2899 | error ("bptypes table does not describe type #%d.", (int) b->type); | |
2900 | if ((int) b->type != bptypes[(int) b->type].type) | |
2901 | error ("bptypes table does not describe type #%d?", (int) b->type); | |
2902 | printf_filtered ("%-14s ", bptypes[(int) b->type].description); | |
2903 | annotate_field (2); | |
2904 | printf_filtered ("%-4s ", bpdisps[(int) b->disposition]); | |
2905 | annotate_field (3); | |
2906 | printf_filtered ("%-3c ", bpenables[(int) b->enable]); | |
2907 | ||
2908 | strcpy (wrap_indent, " "); | |
2909 | if (addressprint) | |
2910 | strcat (wrap_indent, " "); | |
2911 | switch (b->type) | |
2912 | { | |
2913 | case bp_watchpoint: | |
2914 | case bp_hardware_watchpoint: | |
2915 | case bp_read_watchpoint: | |
2916 | case bp_access_watchpoint: | |
2917 | /* Field 4, the address, is omitted (which makes the columns | |
2918 | not line up too nicely with the headers, but the effect | |
2919 | is relatively readable). */ | |
2920 | annotate_field (5); | |
2921 | print_expression (b->exp, gdb_stdout); | |
2922 | break; | |
c906108c | 2923 | |
c5aa993b JM |
2924 | case bp_catch_load: |
2925 | case bp_catch_unload: | |
2926 | /* Field 4, the address, is omitted (which makes the columns | |
2927 | not line up too nicely with the headers, but the effect | |
2928 | is relatively readable). */ | |
2929 | annotate_field (5); | |
2930 | if (b->dll_pathname == NULL) | |
2931 | printf_filtered ("<any library> "); | |
2932 | else | |
2933 | printf_filtered ("library \"%s\" ", b->dll_pathname); | |
2934 | break; | |
c906108c | 2935 | |
c5aa993b JM |
2936 | case bp_catch_fork: |
2937 | case bp_catch_vfork: | |
2938 | /* Field 4, the address, is omitted (which makes the columns | |
2939 | not line up too nicely with the headers, but the effect | |
2940 | is relatively readable). */ | |
2941 | annotate_field (5); | |
2942 | if (b->forked_inferior_pid != 0) | |
2943 | printf_filtered ("process %d ", b->forked_inferior_pid); | |
2944 | break; | |
c906108c | 2945 | |
c5aa993b JM |
2946 | case bp_catch_exec: |
2947 | /* Field 4, the address, is omitted (which makes the columns | |
2948 | not line up too nicely with the headers, but the effect | |
2949 | is relatively readable). */ | |
2950 | annotate_field (5); | |
2951 | if (b->exec_pathname != NULL) | |
2952 | printf_filtered ("program \"%s\" ", b->exec_pathname); | |
2953 | break; | |
2954 | case bp_catch_catch: | |
2955 | /* Field 4, the address, is omitted (which makes the columns | |
2956 | not line up too nicely with the headers, but the effect | |
2957 | is relatively readable). */ | |
2958 | annotate_field (5); | |
2959 | printf_filtered ("exception catch "); | |
2960 | break; | |
2961 | case bp_catch_throw: | |
2962 | /* Field 4, the address, is omitted (which makes the columns | |
2963 | not line up too nicely with the headers, but the effect | |
2964 | is relatively readable). */ | |
2965 | annotate_field (5); | |
2966 | printf_filtered ("exception throw "); | |
2967 | break; | |
c906108c | 2968 | |
c5aa993b JM |
2969 | case bp_breakpoint: |
2970 | case bp_hardware_breakpoint: | |
2971 | case bp_until: | |
2972 | case bp_finish: | |
2973 | case bp_longjmp: | |
2974 | case bp_longjmp_resume: | |
2975 | case bp_step_resume: | |
2976 | case bp_through_sigtramp: | |
2977 | case bp_watchpoint_scope: | |
2978 | case bp_call_dummy: | |
2979 | case bp_shlib_event: | |
2980 | if (addressprint) | |
2981 | { | |
2982 | annotate_field (4); | |
2983 | /* FIXME-32x64: need a print_address_numeric with | |
2984 | field width */ | |
2985 | printf_filtered | |
2986 | ("%s ", | |
2987 | local_hex_string_custom | |
2988 | ((unsigned long) b->address, "08l")); | |
2989 | } | |
c906108c | 2990 | |
c5aa993b | 2991 | annotate_field (5); |
c906108c | 2992 | |
c5aa993b JM |
2993 | last_addr = b->address; |
2994 | if (b->source_file) | |
2995 | { | |
2996 | sym = find_pc_sect_function (b->address, b->section); | |
2997 | if (sym) | |
2998 | { | |
2999 | fputs_filtered ("in ", gdb_stdout); | |
3000 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
3001 | wrap_here (wrap_indent); | |
3002 | fputs_filtered (" at ", gdb_stdout); | |
3003 | } | |
3004 | fputs_filtered (b->source_file, gdb_stdout); | |
3005 | printf_filtered (":%d", b->line_number); | |
3006 | } | |
3007 | else | |
3008 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); | |
3009 | break; | |
3010 | } | |
c906108c | 3011 | |
c5aa993b JM |
3012 | if (b->thread != -1) |
3013 | printf_filtered (" thread %d", b->thread); | |
c906108c | 3014 | |
c5aa993b | 3015 | printf_filtered ("\n"); |
c906108c | 3016 | |
c5aa993b JM |
3017 | if (b->frame) |
3018 | { | |
3019 | annotate_field (6); | |
c906108c | 3020 | |
c5aa993b JM |
3021 | printf_filtered ("\tstop only in stack frame at "); |
3022 | print_address_numeric (b->frame, 1, gdb_stdout); | |
3023 | printf_filtered ("\n"); | |
3024 | } | |
c906108c | 3025 | |
c5aa993b JM |
3026 | if (b->cond) |
3027 | { | |
3028 | annotate_field (7); | |
c906108c | 3029 | |
c5aa993b JM |
3030 | printf_filtered ("\tstop only if "); |
3031 | print_expression (b->cond, gdb_stdout); | |
3032 | printf_filtered ("\n"); | |
3033 | } | |
3034 | ||
3035 | if (b->thread != -1) | |
3036 | { | |
3037 | /* FIXME should make an annotation for this */ | |
3038 | printf_filtered ("\tstop only in thread %d\n", b->thread); | |
3039 | } | |
3040 | ||
3041 | if (show_breakpoint_hit_counts && b->hit_count) | |
3042 | { | |
3043 | /* FIXME should make an annotation for this */ | |
3044 | if (ep_is_catchpoint (b)) | |
3045 | printf_filtered ("\tcatchpoint"); | |
3046 | else | |
3047 | printf_filtered ("\tbreakpoint"); | |
3048 | printf_filtered (" already hit %d time%s\n", | |
3049 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
3050 | } | |
3051 | ||
3052 | if (b->ignore_count) | |
3053 | { | |
3054 | annotate_field (8); | |
3055 | ||
3056 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
3057 | } | |
3058 | ||
3059 | if ((l = b->commands)) | |
3060 | { | |
3061 | annotate_field (9); | |
3062 | ||
3063 | while (l) | |
3064 | { | |
3065 | print_command_line (l, 4, gdb_stdout); | |
3066 | l = l->next; | |
3067 | } | |
3068 | } | |
3069 | } | |
c906108c SS |
3070 | |
3071 | if (!found_a_breakpoint) | |
3072 | { | |
3073 | if (bnum == -1) | |
c5aa993b | 3074 | printf_filtered ("No breakpoints or watchpoints.\n"); |
c906108c | 3075 | else |
c5aa993b | 3076 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); |
c906108c SS |
3077 | } |
3078 | else | |
3079 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3080 | that a comparison of an unsigned with -1 is always false. */ | |
c5aa993b JM |
3081 | if (last_addr != (CORE_ADDR) - 1) |
3082 | set_next_address (last_addr); | |
c906108c SS |
3083 | |
3084 | annotate_breakpoints_table_end (); | |
3085 | } | |
3086 | ||
3087 | /* ARGSUSED */ | |
3088 | static void | |
3089 | breakpoints_info (bnum_exp, from_tty) | |
3090 | char *bnum_exp; | |
3091 | int from_tty; | |
3092 | { | |
3093 | int bnum = -1; | |
3094 | ||
3095 | if (bnum_exp) | |
3096 | bnum = parse_and_eval_address (bnum_exp); | |
3097 | ||
3098 | breakpoint_1 (bnum, 0); | |
3099 | } | |
3100 | ||
c906108c | 3101 | /* ARGSUSED */ |
7a292a7a | 3102 | static void |
c906108c SS |
3103 | maintenance_info_breakpoints (bnum_exp, from_tty) |
3104 | char *bnum_exp; | |
3105 | int from_tty; | |
3106 | { | |
3107 | int bnum = -1; | |
3108 | ||
3109 | if (bnum_exp) | |
3110 | bnum = parse_and_eval_address (bnum_exp); | |
3111 | ||
3112 | breakpoint_1 (bnum, 1); | |
3113 | } | |
3114 | ||
c906108c SS |
3115 | /* Print a message describing any breakpoints set at PC. */ |
3116 | ||
3117 | static void | |
3118 | describe_other_breakpoints (pc, section) | |
3119 | CORE_ADDR pc; | |
3120 | asection *section; | |
3121 | { | |
3122 | register int others = 0; | |
3123 | register struct breakpoint *b; | |
3124 | ||
3125 | ALL_BREAKPOINTS (b) | |
3126 | if (b->address == pc) | |
c5aa993b JM |
3127 | if (overlay_debugging == 0 || |
3128 | b->section == section) | |
3129 | others++; | |
c906108c SS |
3130 | if (others > 0) |
3131 | { | |
3132 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3133 | ALL_BREAKPOINTS (b) | |
3134 | if (b->address == pc) | |
c5aa993b JM |
3135 | if (overlay_debugging == 0 || |
3136 | b->section == section) | |
3137 | { | |
3138 | others--; | |
3139 | printf_filtered | |
3140 | ("%d%s%s ", | |
3141 | b->number, | |
53a5351d JM |
3142 | ((b->enable == disabled || |
3143 | b->enable == shlib_disabled || | |
3144 | b->enable == call_disabled) | |
c5aa993b JM |
3145 | ? " (disabled)" : ""), |
3146 | (others > 1) ? "," : ((others == 1) ? " and" : "")); | |
3147 | } | |
c906108c SS |
3148 | printf_filtered ("also set at pc "); |
3149 | print_address_numeric (pc, 1, gdb_stdout); | |
3150 | printf_filtered (".\n"); | |
3151 | } | |
3152 | } | |
3153 | \f | |
3154 | /* Set the default place to put a breakpoint | |
3155 | for the `break' command with no arguments. */ | |
3156 | ||
3157 | void | |
3158 | set_default_breakpoint (valid, addr, symtab, line) | |
3159 | int valid; | |
3160 | CORE_ADDR addr; | |
3161 | struct symtab *symtab; | |
3162 | int line; | |
3163 | { | |
3164 | default_breakpoint_valid = valid; | |
3165 | default_breakpoint_address = addr; | |
3166 | default_breakpoint_symtab = symtab; | |
3167 | default_breakpoint_line = line; | |
3168 | } | |
3169 | ||
3170 | /* Rescan breakpoints at address ADDRESS, | |
3171 | marking the first one as "first" and any others as "duplicates". | |
3172 | This is so that the bpt instruction is only inserted once. */ | |
3173 | ||
3174 | static void | |
3175 | check_duplicates (address, section) | |
3176 | CORE_ADDR address; | |
3177 | asection *section; | |
3178 | { | |
3179 | register struct breakpoint *b; | |
3180 | register int count = 0; | |
3181 | ||
3182 | if (address == 0) /* Watchpoints are uninteresting */ | |
3183 | return; | |
3184 | ||
3185 | ALL_BREAKPOINTS (b) | |
3186 | if (b->enable != disabled | |
3187 | && b->enable != shlib_disabled | |
3188 | && b->enable != call_disabled | |
3189 | && b->address == address | |
3190 | && (overlay_debugging == 0 || b->section == section)) | |
c5aa993b JM |
3191 | { |
3192 | count++; | |
3193 | b->duplicate = count > 1; | |
3194 | } | |
c906108c SS |
3195 | } |
3196 | ||
3197 | /* Low level routine to set a breakpoint. | |
3198 | Takes as args the three things that every breakpoint must have. | |
3199 | Returns the breakpoint object so caller can set other things. | |
3200 | Does not set the breakpoint number! | |
3201 | Does not print anything. | |
3202 | ||
3203 | ==> This routine should not be called if there is a chance of later | |
3204 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
3205 | your arguments BEFORE calling this routine! */ | |
3206 | ||
3207 | struct breakpoint * | |
3208 | set_raw_breakpoint (sal) | |
3209 | struct symtab_and_line sal; | |
3210 | { | |
3211 | register struct breakpoint *b, *b1; | |
3212 | ||
3213 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3214 | memset (b, 0, sizeof (*b)); | |
3215 | b->address = sal.pc; | |
3216 | if (sal.symtab == NULL) | |
3217 | b->source_file = NULL; | |
3218 | else | |
3219 | b->source_file = savestring (sal.symtab->filename, | |
3220 | strlen (sal.symtab->filename)); | |
3221 | b->section = sal.section; | |
3222 | b->language = current_language->la_language; | |
3223 | b->input_radix = input_radix; | |
3224 | b->thread = -1; | |
3225 | b->line_number = sal.line; | |
3226 | b->enable = enabled; | |
3227 | b->next = 0; | |
3228 | b->silent = 0; | |
3229 | b->ignore_count = 0; | |
3230 | b->commands = NULL; | |
3231 | b->frame = 0; | |
3232 | b->dll_pathname = NULL; | |
3233 | b->triggered_dll_pathname = NULL; | |
3234 | b->forked_inferior_pid = 0; | |
3235 | b->exec_pathname = NULL; | |
3236 | ||
3237 | /* Add this breakpoint to the end of the chain | |
3238 | so that a list of breakpoints will come out in order | |
3239 | of increasing numbers. */ | |
3240 | ||
3241 | b1 = breakpoint_chain; | |
3242 | if (b1 == 0) | |
3243 | breakpoint_chain = b; | |
3244 | else | |
3245 | { | |
3246 | while (b1->next) | |
3247 | b1 = b1->next; | |
3248 | b1->next = b; | |
3249 | } | |
3250 | ||
3251 | check_duplicates (sal.pc, sal.section); | |
3252 | breakpoints_changed (); | |
3253 | ||
3254 | return b; | |
3255 | } | |
3256 | ||
3257 | #ifdef GET_LONGJMP_TARGET | |
3258 | ||
3259 | static void | |
3260 | create_longjmp_breakpoint (func_name) | |
3261 | char *func_name; | |
3262 | { | |
3263 | struct symtab_and_line sal; | |
3264 | struct breakpoint *b; | |
3265 | ||
c5aa993b | 3266 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3267 | if (func_name != NULL) |
3268 | { | |
3269 | struct minimal_symbol *m; | |
3270 | ||
53a5351d JM |
3271 | m = lookup_minimal_symbol_text (func_name, NULL, |
3272 | (struct objfile *) NULL); | |
c906108c SS |
3273 | if (m) |
3274 | sal.pc = SYMBOL_VALUE_ADDRESS (m); | |
3275 | else | |
3276 | return; | |
3277 | } | |
3278 | sal.section = find_pc_overlay (sal.pc); | |
3279 | b = set_raw_breakpoint (sal); | |
c5aa993b JM |
3280 | if (!b) |
3281 | return; | |
c906108c SS |
3282 | |
3283 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; | |
3284 | b->disposition = donttouch; | |
3285 | b->enable = disabled; | |
3286 | b->silent = 1; | |
3287 | if (func_name) | |
c5aa993b | 3288 | b->addr_string = strsave (func_name); |
c906108c SS |
3289 | b->number = internal_breakpoint_number--; |
3290 | } | |
3291 | ||
c5aa993b | 3292 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
c906108c | 3293 | |
53a5351d JM |
3294 | /* Call this routine when stepping and nexting to enable a breakpoint |
3295 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3296 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3297 | ||
3298 | void | |
c5aa993b | 3299 | enable_longjmp_breakpoint () |
c906108c SS |
3300 | { |
3301 | register struct breakpoint *b; | |
3302 | ||
3303 | ALL_BREAKPOINTS (b) | |
3304 | if (b->type == bp_longjmp) | |
c5aa993b JM |
3305 | { |
3306 | b->enable = enabled; | |
3307 | check_duplicates (b->address, b->section); | |
3308 | } | |
c906108c SS |
3309 | } |
3310 | ||
3311 | void | |
c5aa993b | 3312 | disable_longjmp_breakpoint () |
c906108c SS |
3313 | { |
3314 | register struct breakpoint *b; | |
3315 | ||
3316 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3317 | if (b->type == bp_longjmp |
c906108c | 3318 | || b->type == bp_longjmp_resume) |
c5aa993b JM |
3319 | { |
3320 | b->enable = disabled; | |
3321 | check_duplicates (b->address, b->section); | |
3322 | } | |
c906108c SS |
3323 | } |
3324 | ||
3325 | #ifdef SOLIB_ADD | |
3326 | void | |
3327 | remove_solib_event_breakpoints () | |
3328 | { | |
3329 | register struct breakpoint *b, *temp; | |
3330 | ||
3331 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3332 | if (b->type == bp_shlib_event) | |
c5aa993b | 3333 | delete_breakpoint (b); |
c906108c SS |
3334 | } |
3335 | ||
3336 | void | |
3337 | create_solib_event_breakpoint (address) | |
3338 | CORE_ADDR address; | |
3339 | { | |
3340 | struct breakpoint *b; | |
3341 | struct symtab_and_line sal; | |
3342 | ||
c5aa993b | 3343 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3344 | sal.pc = address; |
3345 | sal.section = find_pc_overlay (sal.pc); | |
3346 | b = set_raw_breakpoint (sal); | |
3347 | b->number = internal_breakpoint_number--; | |
3348 | b->disposition = donttouch; | |
3349 | b->type = bp_shlib_event; | |
3350 | } | |
3351 | ||
104c1213 JM |
3352 | /* Disable any breakpoints that are on code in shared libraries. Only |
3353 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
3354 | ||
c906108c SS |
3355 | void |
3356 | disable_breakpoints_in_shlibs (silent) | |
3357 | int silent; | |
3358 | { | |
c5aa993b JM |
3359 | struct breakpoint *b; |
3360 | int disabled_shlib_breaks = 0; | |
c906108c SS |
3361 | |
3362 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
3363 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3364 | { |
c906108c | 3365 | #if defined (PC_SOLIB) |
c5aa993b JM |
3366 | if (((b->type == bp_breakpoint) || |
3367 | (b->type == bp_hardware_breakpoint)) && | |
104c1213 | 3368 | b->enable == enabled && |
c5aa993b JM |
3369 | !b->duplicate && |
3370 | PC_SOLIB (b->address)) | |
3371 | { | |
3372 | b->enable = shlib_disabled; | |
3373 | if (!silent) | |
3374 | { | |
3375 | if (!disabled_shlib_breaks) | |
3376 | { | |
3377 | target_terminal_ours_for_output (); | |
53a5351d | 3378 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
3379 | } |
3380 | disabled_shlib_breaks = 1; | |
53a5351d | 3381 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
3382 | } |
3383 | } | |
c906108c | 3384 | #endif |
c5aa993b | 3385 | } |
c906108c SS |
3386 | } |
3387 | ||
3388 | /* Try to reenable any breakpoints in shared libraries. */ | |
3389 | void | |
3390 | re_enable_breakpoints_in_shlibs () | |
3391 | { | |
3392 | struct breakpoint *b; | |
3393 | ||
3394 | ALL_BREAKPOINTS (b) | |
3395 | if (b->enable == shlib_disabled) | |
c5aa993b JM |
3396 | { |
3397 | char buf[1]; | |
c906108c | 3398 | |
c5aa993b JM |
3399 | /* Do not reenable the breakpoint if the shared library |
3400 | is still not mapped in. */ | |
3401 | if (target_read_memory (b->address, buf, 1) == 0) | |
3402 | b->enable = enabled; | |
3403 | } | |
c906108c SS |
3404 | } |
3405 | ||
3406 | #endif | |
3407 | ||
3408 | static void | |
53a5351d | 3409 | solib_load_unload_1 (hookname, tempflag, dll_pathname, cond_string, bp_kind) |
7a292a7a SS |
3410 | char *hookname; |
3411 | int tempflag; | |
3412 | char *dll_pathname; | |
3413 | char *cond_string; | |
3414 | enum bptype bp_kind; | |
c906108c | 3415 | { |
c5aa993b | 3416 | struct breakpoint *b; |
c906108c | 3417 | struct symtabs_and_lines sals; |
c5aa993b JM |
3418 | struct symtab_and_line sal; |
3419 | struct cleanup *old_chain; | |
3420 | struct cleanup *canonical_strings_chain = NULL; | |
3421 | int i; | |
3422 | char *addr_start = hookname; | |
3423 | char *addr_end = NULL; | |
3424 | char **canonical = (char **) NULL; | |
3425 | int thread = -1; /* All threads. */ | |
3426 | ||
c906108c SS |
3427 | /* Set a breakpoint on the specified hook. */ |
3428 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
3429 | addr_end = hookname; | |
c5aa993b | 3430 | |
c906108c SS |
3431 | if (sals.nelts == 0) |
3432 | { | |
3433 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
3434 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
3435 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
3436 | return; | |
3437 | } | |
3438 | if (sals.nelts != 1) | |
3439 | { | |
53a5351d | 3440 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
3441 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
3442 | return; | |
3443 | } | |
3444 | ||
53a5351d JM |
3445 | /* Make sure that all storage allocated in decode_line_1 gets freed |
3446 | in case the following errors out. */ | |
c906108c | 3447 | old_chain = make_cleanup (free, sals.sals); |
c5aa993b | 3448 | if (canonical != (char **) NULL) |
c906108c SS |
3449 | { |
3450 | make_cleanup (free, canonical); | |
3451 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
3452 | if (canonical[0] != NULL) | |
c5aa993b | 3453 | make_cleanup (free, canonical[0]); |
c906108c | 3454 | } |
c5aa993b | 3455 | |
c906108c | 3456 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 3457 | |
c906108c | 3458 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 3459 | if (canonical != (char **) NULL) |
c906108c | 3460 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 3461 | |
c906108c SS |
3462 | b = set_raw_breakpoint (sals.sals[0]); |
3463 | set_breakpoint_count (breakpoint_count + 1); | |
3464 | b->number = breakpoint_count; | |
3465 | b->cond = NULL; | |
53a5351d JM |
3466 | b->cond_string = (cond_string == NULL) ? |
3467 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 3468 | b->thread = thread; |
c5aa993b JM |
3469 | |
3470 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
3471 | b->addr_string = canonical[0]; |
3472 | else if (addr_start) | |
3473 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 3474 | |
c906108c SS |
3475 | b->enable = enabled; |
3476 | b->disposition = tempflag ? del : donttouch; | |
c5aa993b | 3477 | |
c906108c SS |
3478 | if (dll_pathname == NULL) |
3479 | b->dll_pathname = NULL; | |
3480 | else | |
3481 | { | |
3482 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
3483 | strcpy (b->dll_pathname, dll_pathname); | |
3484 | } | |
3485 | b->type = bp_kind; | |
c5aa993b | 3486 | |
c906108c SS |
3487 | mention (b); |
3488 | do_cleanups (old_chain); | |
3489 | } | |
3490 | ||
3491 | void | |
53a5351d JM |
3492 | create_solib_load_event_breakpoint (hookname, tempflag, |
3493 | dll_pathname, cond_string) | |
c5aa993b JM |
3494 | char *hookname; |
3495 | int tempflag; | |
3496 | char *dll_pathname; | |
3497 | char *cond_string; | |
c906108c | 3498 | { |
53a5351d JM |
3499 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
3500 | cond_string, bp_catch_load); | |
c906108c SS |
3501 | } |
3502 | ||
3503 | void | |
53a5351d JM |
3504 | create_solib_unload_event_breakpoint (hookname, tempflag, |
3505 | dll_pathname, cond_string) | |
c5aa993b JM |
3506 | char *hookname; |
3507 | int tempflag; | |
3508 | char *dll_pathname; | |
3509 | char *cond_string; | |
c906108c | 3510 | { |
53a5351d JM |
3511 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
3512 | cond_string, bp_catch_unload); | |
c906108c SS |
3513 | } |
3514 | ||
3515 | static void | |
3516 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind) | |
7a292a7a SS |
3517 | int tempflag; |
3518 | char *cond_string; | |
3519 | enum bptype bp_kind; | |
c906108c | 3520 | { |
c5aa993b JM |
3521 | struct symtab_and_line sal; |
3522 | struct breakpoint *b; | |
3523 | int thread = -1; /* All threads. */ | |
3524 | ||
3525 | INIT_SAL (&sal); | |
c906108c SS |
3526 | sal.pc = 0; |
3527 | sal.symtab = NULL; | |
3528 | sal.line = 0; | |
c5aa993b | 3529 | |
c906108c SS |
3530 | b = set_raw_breakpoint (sal); |
3531 | set_breakpoint_count (breakpoint_count + 1); | |
3532 | b->number = breakpoint_count; | |
3533 | b->cond = NULL; | |
53a5351d JM |
3534 | b->cond_string = (cond_string == NULL) ? |
3535 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
3536 | b->thread = thread; |
3537 | b->addr_string = NULL; | |
3538 | b->enable = enabled; | |
3539 | b->disposition = tempflag ? del : donttouch; | |
3540 | b->forked_inferior_pid = 0; | |
c5aa993b | 3541 | |
c906108c | 3542 | b->type = bp_kind; |
c5aa993b | 3543 | |
c906108c SS |
3544 | mention (b); |
3545 | } | |
3546 | ||
3547 | void | |
3548 | create_fork_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
3549 | int tempflag; |
3550 | char *cond_string; | |
c906108c SS |
3551 | { |
3552 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
3553 | } | |
c5aa993b | 3554 | |
c906108c SS |
3555 | void |
3556 | create_vfork_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
3557 | int tempflag; |
3558 | char *cond_string; | |
c906108c SS |
3559 | { |
3560 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
3561 | } | |
3562 | ||
3563 | void | |
3564 | create_exec_event_catchpoint (tempflag, cond_string) | |
c5aa993b JM |
3565 | int tempflag; |
3566 | char *cond_string; | |
c906108c | 3567 | { |
c5aa993b JM |
3568 | struct symtab_and_line sal; |
3569 | struct breakpoint *b; | |
3570 | int thread = -1; /* All threads. */ | |
c906108c | 3571 | |
c5aa993b | 3572 | INIT_SAL (&sal); |
c906108c SS |
3573 | sal.pc = 0; |
3574 | sal.symtab = NULL; | |
3575 | sal.line = 0; | |
3576 | ||
3577 | b = set_raw_breakpoint (sal); | |
3578 | set_breakpoint_count (breakpoint_count + 1); | |
3579 | b->number = breakpoint_count; | |
3580 | b->cond = NULL; | |
53a5351d JM |
3581 | b->cond_string = (cond_string == NULL) ? |
3582 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
3583 | b->thread = thread; |
3584 | b->addr_string = NULL; | |
3585 | b->enable = enabled; | |
3586 | b->disposition = tempflag ? del : donttouch; | |
3587 | ||
3588 | b->type = bp_catch_exec; | |
3589 | ||
3590 | mention (b); | |
3591 | } | |
3592 | ||
3593 | static int | |
c5aa993b | 3594 | hw_breakpoint_used_count () |
c906108c SS |
3595 | { |
3596 | register struct breakpoint *b; | |
3597 | int i = 0; | |
3598 | ||
3599 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
3600 | { |
3601 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
3602 | i++; | |
3603 | } | |
c906108c SS |
3604 | |
3605 | return i; | |
3606 | } | |
3607 | ||
3608 | static int | |
c5aa993b JM |
3609 | hw_watchpoint_used_count (type, other_type_used) |
3610 | enum bptype type; | |
3611 | int *other_type_used; | |
c906108c SS |
3612 | { |
3613 | register struct breakpoint *b; | |
3614 | int i = 0; | |
3615 | ||
3616 | *other_type_used = 0; | |
3617 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
3618 | { |
3619 | if (b->enable == enabled) | |
3620 | { | |
3621 | if (b->type == type) | |
3622 | i++; | |
3623 | else if ((b->type == bp_hardware_watchpoint || | |
3624 | b->type == bp_read_watchpoint || | |
3625 | b->type == bp_access_watchpoint) | |
3626 | && b->enable == enabled) | |
3627 | *other_type_used = 1; | |
3628 | } | |
3629 | } | |
c906108c SS |
3630 | return i; |
3631 | } | |
3632 | ||
53a5351d JM |
3633 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
3634 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 3635 | |
53a5351d JM |
3636 | FIXME - This ought to be done by setting a temporary breakpoint |
3637 | that gets deleted automatically... */ | |
c906108c SS |
3638 | |
3639 | void | |
c5aa993b | 3640 | set_longjmp_resume_breakpoint (pc, frame) |
c906108c SS |
3641 | CORE_ADDR pc; |
3642 | struct frame_info *frame; | |
3643 | { | |
3644 | register struct breakpoint *b; | |
3645 | ||
3646 | ALL_BREAKPOINTS (b) | |
3647 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
3648 | { |
3649 | b->address = pc; | |
3650 | b->enable = enabled; | |
3651 | if (frame != NULL) | |
3652 | b->frame = frame->frame; | |
3653 | else | |
3654 | b->frame = 0; | |
3655 | check_duplicates (b->address, b->section); | |
3656 | return; | |
3657 | } | |
c906108c SS |
3658 | } |
3659 | ||
3660 | void | |
3661 | disable_watchpoints_before_interactive_call_start () | |
3662 | { | |
c5aa993b | 3663 | struct breakpoint *b; |
c906108c SS |
3664 | |
3665 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
3666 | { |
3667 | if (((b->type == bp_watchpoint) | |
3668 | || (b->type == bp_hardware_watchpoint) | |
3669 | || (b->type == bp_read_watchpoint) | |
3670 | || (b->type == bp_access_watchpoint) | |
3671 | || ep_is_exception_catchpoint (b)) | |
3672 | && (b->enable == enabled)) | |
3673 | { | |
3674 | b->enable = call_disabled; | |
3675 | check_duplicates (b->address, b->section); | |
3676 | } | |
3677 | } | |
c906108c SS |
3678 | } |
3679 | ||
3680 | void | |
3681 | enable_watchpoints_after_interactive_call_stop () | |
3682 | { | |
c5aa993b | 3683 | struct breakpoint *b; |
c906108c SS |
3684 | |
3685 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
3686 | { |
3687 | if (((b->type == bp_watchpoint) | |
3688 | || (b->type == bp_hardware_watchpoint) | |
3689 | || (b->type == bp_read_watchpoint) | |
3690 | || (b->type == bp_access_watchpoint) | |
3691 | || ep_is_exception_catchpoint (b)) | |
3692 | && (b->enable == call_disabled)) | |
3693 | { | |
3694 | b->enable = enabled; | |
3695 | check_duplicates (b->address, b->section); | |
3696 | } | |
3697 | } | |
c906108c SS |
3698 | } |
3699 | ||
3700 | ||
3701 | /* Set a breakpoint that will evaporate an end of command | |
3702 | at address specified by SAL. | |
3703 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
3704 | ||
3705 | struct breakpoint * | |
3706 | set_momentary_breakpoint (sal, frame, type) | |
3707 | struct symtab_and_line sal; | |
3708 | struct frame_info *frame; | |
3709 | enum bptype type; | |
3710 | { | |
3711 | register struct breakpoint *b; | |
3712 | b = set_raw_breakpoint (sal); | |
3713 | b->type = type; | |
3714 | b->enable = enabled; | |
3715 | b->disposition = donttouch; | |
3716 | b->frame = (frame ? frame->frame : 0); | |
3717 | ||
3718 | /* If we're debugging a multi-threaded program, then we | |
3719 | want momentary breakpoints to be active in only a | |
3720 | single thread of control. */ | |
3721 | if (in_thread_list (inferior_pid)) | |
3722 | b->thread = pid_to_thread_id (inferior_pid); | |
3723 | ||
3724 | return b; | |
3725 | } | |
c906108c | 3726 | \f |
c5aa993b | 3727 | |
c906108c SS |
3728 | /* Tell the user we have just set a breakpoint B. */ |
3729 | ||
3730 | static void | |
3731 | mention (b) | |
3732 | struct breakpoint *b; | |
3733 | { | |
3734 | int say_where = 0; | |
3735 | ||
3736 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
3737 | watchpoint) other than breakpoint creation. It should be possible to | |
3738 | clean this up and at the same time replace the random calls to | |
3739 | breakpoint_changed with this hook, as has already been done for | |
3740 | delete_breakpoint_hook and so on. */ | |
3741 | if (create_breakpoint_hook) | |
3742 | create_breakpoint_hook (b); | |
104c1213 | 3743 | breakpoint_create_event (b->number); |
c906108c SS |
3744 | |
3745 | switch (b->type) | |
3746 | { | |
3747 | case bp_none: | |
3748 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
3749 | break; | |
3750 | case bp_watchpoint: | |
3751 | printf_filtered ("Watchpoint %d: ", b->number); | |
3752 | print_expression (b->exp, gdb_stdout); | |
3753 | break; | |
3754 | case bp_hardware_watchpoint: | |
3755 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
3756 | print_expression (b->exp, gdb_stdout); | |
3757 | break; | |
3758 | case bp_read_watchpoint: | |
3759 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
3760 | print_expression (b->exp, gdb_stdout); | |
3761 | break; | |
3762 | case bp_access_watchpoint: | |
53a5351d JM |
3763 | printf_filtered ("Hardware access (read/write) watchpoint %d: ", |
3764 | b->number); | |
c906108c SS |
3765 | print_expression (b->exp, gdb_stdout); |
3766 | break; | |
3767 | case bp_breakpoint: | |
3768 | printf_filtered ("Breakpoint %d", b->number); | |
3769 | say_where = 1; | |
3770 | break; | |
3771 | case bp_hardware_breakpoint: | |
3772 | printf_filtered ("Hardware assisted breakpoint %d", b->number); | |
3773 | say_where = 1; | |
3774 | break; | |
3775 | case bp_catch_load: | |
3776 | case bp_catch_unload: | |
3777 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
3778 | b->number, |
3779 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
3780 | (b->dll_pathname != NULL) ? |
3781 | b->dll_pathname : "<any library>"); | |
c906108c SS |
3782 | break; |
3783 | case bp_catch_fork: | |
3784 | case bp_catch_vfork: | |
3785 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
3786 | b->number, |
3787 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
3788 | break; |
3789 | case bp_catch_exec: | |
3790 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 3791 | b->number); |
c906108c SS |
3792 | break; |
3793 | case bp_catch_catch: | |
3794 | case bp_catch_throw: | |
3795 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
3796 | b->number, |
3797 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
3798 | break; |
3799 | ||
3800 | case bp_until: | |
3801 | case bp_finish: | |
3802 | case bp_longjmp: | |
3803 | case bp_longjmp_resume: | |
3804 | case bp_step_resume: | |
3805 | case bp_through_sigtramp: | |
3806 | case bp_call_dummy: | |
3807 | case bp_watchpoint_scope: | |
3808 | case bp_shlib_event: | |
3809 | break; | |
3810 | } | |
3811 | if (say_where) | |
3812 | { | |
3813 | if (addressprint || b->source_file == NULL) | |
3814 | { | |
3815 | printf_filtered (" at "); | |
3816 | print_address_numeric (b->address, 1, gdb_stdout); | |
3817 | } | |
3818 | if (b->source_file) | |
3819 | printf_filtered (": file %s, line %d.", | |
3820 | b->source_file, b->line_number); | |
c5aa993b JM |
3821 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, b, 1)); |
3822 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
c906108c SS |
3823 | } |
3824 | printf_filtered ("\n"); | |
3825 | } | |
c906108c | 3826 | \f |
c5aa993b | 3827 | |
c906108c SS |
3828 | /* Set a breakpoint according to ARG (function, linenum or *address) |
3829 | flag: first bit : 0 non-temporary, 1 temporary. | |
c5aa993b | 3830 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ |
c906108c SS |
3831 | |
3832 | static void | |
3833 | break_command_1 (arg, flag, from_tty) | |
3834 | char *arg; | |
3835 | int flag, from_tty; | |
3836 | { | |
3837 | int tempflag, hardwareflag; | |
3838 | struct symtabs_and_lines sals; | |
3839 | struct symtab_and_line sal; | |
3840 | register struct expression *cond = 0; | |
3841 | register struct breakpoint *b; | |
3842 | ||
3843 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
3844 | char *cond_start = NULL; | |
3845 | char *cond_end = NULL; | |
3846 | /* Pointers in arg to the start, and one past the end, | |
3847 | of the address part. */ | |
3848 | char *addr_start = NULL; | |
3849 | char *addr_end = NULL; | |
3850 | struct cleanup *old_chain; | |
3851 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b | 3852 | char **canonical = (char **) NULL; |
c906108c SS |
3853 | int i; |
3854 | int thread; | |
3855 | ||
3856 | hardwareflag = flag & BP_HARDWAREFLAG; | |
3857 | tempflag = flag & BP_TEMPFLAG; | |
3858 | ||
3859 | sals.sals = NULL; | |
3860 | sals.nelts = 0; | |
3861 | ||
c5aa993b | 3862 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3863 | |
3864 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
3865 | ||
c5aa993b | 3866 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
3867 | && (arg[2] == ' ' || arg[2] == '\t'))) |
3868 | { | |
3869 | if (default_breakpoint_valid) | |
3870 | { | |
c5aa993b | 3871 | sals.sals = (struct symtab_and_line *) |
c906108c SS |
3872 | xmalloc (sizeof (struct symtab_and_line)); |
3873 | sal.pc = default_breakpoint_address; | |
3874 | sal.line = default_breakpoint_line; | |
3875 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 3876 | sal.section = find_pc_overlay (sal.pc); |
c906108c SS |
3877 | sals.sals[0] = sal; |
3878 | sals.nelts = 1; | |
3879 | } | |
3880 | else | |
3881 | error ("No default breakpoint address now."); | |
3882 | } | |
3883 | else | |
3884 | { | |
3885 | addr_start = arg; | |
3886 | ||
3887 | /* Force almost all breakpoints to be in terms of the | |
c5aa993b JM |
3888 | current_source_symtab (which is decode_line_1's default). This |
3889 | should produce the results we want almost all of the time while | |
3890 | leaving default_breakpoint_* alone. */ | |
c906108c SS |
3891 | if (default_breakpoint_valid |
3892 | && (!current_source_symtab | |
3893 | || (arg && (*arg == '+' || *arg == '-')))) | |
3894 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
3895 | default_breakpoint_line, &canonical); | |
3896 | else | |
c5aa993b | 3897 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, &canonical); |
c906108c SS |
3898 | |
3899 | addr_end = arg; | |
3900 | } | |
c5aa993b JM |
3901 | |
3902 | if (!sals.nelts) | |
c906108c SS |
3903 | return; |
3904 | ||
53a5351d JM |
3905 | /* Make sure that all storage allocated in decode_line_1 gets freed |
3906 | in case the following `for' loop errors out. */ | |
c906108c | 3907 | old_chain = make_cleanup (free, sals.sals); |
c5aa993b | 3908 | if (canonical != (char **) NULL) |
c906108c SS |
3909 | { |
3910 | make_cleanup (free, canonical); | |
3911 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
3912 | for (i = 0; i < sals.nelts; i++) | |
3913 | { | |
3914 | if (canonical[i] != NULL) | |
3915 | make_cleanup (free, canonical[i]); | |
3916 | } | |
3917 | } | |
3918 | ||
3919 | thread = -1; /* No specific thread yet */ | |
3920 | ||
3921 | /* Resolve all line numbers to PC's, and verify that conditions | |
3922 | can be parsed, before setting any breakpoints. */ | |
3923 | for (i = 0; i < sals.nelts; i++) | |
3924 | { | |
3925 | char *tok, *end_tok; | |
3926 | int toklen; | |
3927 | ||
3928 | resolve_sal_pc (&sals.sals[i]); | |
3929 | ||
3930 | /* It's possible for the PC to be nonzero, but still an illegal | |
3931 | value on some targets. | |
3932 | ||
3933 | For example, on HP-UX if you start gdb, and before running the | |
3934 | inferior you try to set a breakpoint on a shared library function | |
3935 | "foo" where the inferior doesn't call "foo" directly but does | |
3936 | pass its address to another function call, then we do find a | |
3937 | minimal symbol for the "foo", but it's address is invalid. | |
3938 | (Appears to be an index into a table that the loader sets up | |
3939 | when the inferior is run.) | |
3940 | ||
3941 | Give the target a chance to bless sals.sals[i].pc before we | |
3942 | try to make a breakpoint for it. */ | |
c5aa993b JM |
3943 | if (PC_REQUIRES_RUN_BEFORE_USE (sals.sals[i].pc)) |
3944 | { | |
53a5351d JM |
3945 | error ("Cannot break on %s without a running program.", |
3946 | addr_start); | |
c5aa993b JM |
3947 | } |
3948 | ||
c906108c SS |
3949 | tok = arg; |
3950 | ||
3951 | while (tok && *tok) | |
3952 | { | |
3953 | while (*tok == ' ' || *tok == '\t') | |
3954 | tok++; | |
3955 | ||
3956 | end_tok = tok; | |
3957 | ||
3958 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
3959 | end_tok++; | |
3960 | ||
3961 | toklen = end_tok - tok; | |
3962 | ||
3963 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
3964 | { | |
3965 | tok = cond_start = end_tok + 1; | |
3966 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
3967 | cond_end = tok; | |
3968 | } | |
3969 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
3970 | { | |
3971 | char *tmptok; | |
3972 | ||
3973 | tok = end_tok + 1; | |
3974 | tmptok = tok; | |
3975 | thread = strtol (tok, &tok, 0); | |
3976 | if (tok == tmptok) | |
3977 | error ("Junk after thread keyword."); | |
3978 | if (!valid_thread_id (thread)) | |
3979 | error ("Unknown thread %d\n", thread); | |
3980 | } | |
3981 | else | |
3982 | error ("Junk at end of arguments."); | |
3983 | } | |
3984 | } | |
3985 | if (hardwareflag) | |
3986 | { | |
3987 | int i, target_resources_ok; | |
3988 | ||
c5aa993b | 3989 | i = hw_breakpoint_used_count (); |
53a5351d JM |
3990 | target_resources_ok = |
3991 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
3992 | i + sals.nelts, 0); | |
c906108c SS |
3993 | if (target_resources_ok == 0) |
3994 | error ("No hardware breakpoint support in the target."); | |
3995 | else if (target_resources_ok < 0) | |
c5aa993b | 3996 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
3997 | } |
3998 | ||
3999 | /* Remove the canonical strings from the cleanup, they are needed below. */ | |
c5aa993b | 4000 | if (canonical != (char **) NULL) |
c906108c SS |
4001 | discard_cleanups (canonical_strings_chain); |
4002 | ||
4003 | /* Now set all the breakpoints. */ | |
4004 | for (i = 0; i < sals.nelts; i++) | |
4005 | { | |
4006 | sal = sals.sals[i]; | |
4007 | ||
4008 | if (from_tty) | |
4009 | describe_other_breakpoints (sal.pc, sal.section); | |
4010 | ||
4011 | b = set_raw_breakpoint (sal); | |
4012 | set_breakpoint_count (breakpoint_count + 1); | |
4013 | b->number = breakpoint_count; | |
4014 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; | |
4015 | b->cond = cond; | |
4016 | b->thread = thread; | |
4017 | ||
4018 | /* If a canonical line spec is needed use that instead of the | |
c5aa993b JM |
4019 | command string. */ |
4020 | if (canonical != (char **) NULL && canonical[i] != NULL) | |
c906108c SS |
4021 | b->addr_string = canonical[i]; |
4022 | else if (addr_start) | |
4023 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
4024 | if (cond_start) | |
4025 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
c5aa993b | 4026 | |
c906108c SS |
4027 | b->enable = enabled; |
4028 | b->disposition = tempflag ? del : donttouch; | |
4029 | mention (b); | |
4030 | } | |
4031 | ||
4032 | if (sals.nelts > 1) | |
4033 | { | |
53a5351d JM |
4034 | warning ("Multiple breakpoints were set."); |
4035 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c SS |
4036 | } |
4037 | do_cleanups (old_chain); | |
4038 | } | |
4039 | ||
4040 | static void | |
4041 | break_at_finish_at_depth_command_1 (arg, flag, from_tty) | |
4042 | char *arg; | |
4043 | int flag; | |
4044 | int from_tty; | |
4045 | { | |
4046 | struct frame_info *frame; | |
4047 | CORE_ADDR low, high, selected_pc = 0; | |
4048 | char *extra_args, *level_arg, *addr_string; | |
4049 | int extra_args_len = 0, if_arg = 0; | |
4050 | ||
4051 | if (!arg || | |
4052 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4053 | { | |
4054 | ||
4055 | if (default_breakpoint_valid) | |
4056 | { | |
4057 | if (selected_frame) | |
4058 | { | |
4059 | selected_pc = selected_frame->pc; | |
4060 | if (arg) | |
4061 | if_arg = 1; | |
4062 | } | |
4063 | else | |
4064 | error ("No selected frame."); | |
4065 | } | |
4066 | else | |
4067 | error ("No default breakpoint address now."); | |
4068 | } | |
4069 | else | |
4070 | { | |
4071 | extra_args = strchr (arg, ' '); | |
4072 | if (extra_args) | |
4073 | { | |
4074 | extra_args++; | |
4075 | extra_args_len = strlen (extra_args); | |
4076 | level_arg = (char *) xmalloc (extra_args - arg); | |
4077 | strncpy (level_arg, arg, extra_args - arg - 1); | |
4078 | level_arg[extra_args - arg - 1] = '\0'; | |
4079 | } | |
4080 | else | |
4081 | { | |
4082 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
4083 | strcpy (level_arg, arg); | |
4084 | } | |
4085 | ||
4086 | frame = parse_frame_specification (level_arg); | |
4087 | if (frame) | |
4088 | selected_pc = frame->pc; | |
4089 | else | |
4090 | selected_pc = 0; | |
4091 | } | |
4092 | if (if_arg) | |
4093 | { | |
4094 | extra_args = arg; | |
c5aa993b | 4095 | extra_args_len = strlen (arg); |
c906108c SS |
4096 | } |
4097 | ||
4098 | if (selected_pc) | |
4099 | { | |
c5aa993b | 4100 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c SS |
4101 | { |
4102 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
4103 | if (extra_args_len) | |
4104 | sprintf (addr_string, "*0x%x %s", high, extra_args); | |
4105 | else | |
4106 | sprintf (addr_string, "*0x%x", high); | |
4107 | break_command_1 (addr_string, flag, from_tty); | |
4108 | free (addr_string); | |
4109 | } | |
4110 | else | |
4111 | error ("No function contains the specified address"); | |
4112 | } | |
4113 | else | |
4114 | error ("Unable to set breakpoint at procedure exit"); | |
4115 | } | |
4116 | ||
4117 | ||
4118 | static void | |
4119 | break_at_finish_command_1 (arg, flag, from_tty) | |
4120 | char *arg; | |
4121 | int flag; | |
4122 | int from_tty; | |
4123 | { | |
4124 | char *addr_string, *break_string, *beg_addr_string; | |
4125 | CORE_ADDR low, high; | |
4126 | struct symtabs_and_lines sals; | |
4127 | struct symtab_and_line sal; | |
4128 | struct cleanup *old_chain; | |
4129 | char *extra_args; | |
4130 | int extra_args_len = 0; | |
4131 | int i, if_arg = 0; | |
4132 | ||
4133 | if (!arg || | |
4134 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4135 | { | |
4136 | if (default_breakpoint_valid) | |
4137 | { | |
4138 | if (selected_frame) | |
4139 | { | |
4140 | addr_string = (char *) xmalloc (15); | |
4141 | sprintf (addr_string, "*0x%x", selected_frame->pc); | |
4142 | if (arg) | |
4143 | if_arg = 1; | |
4144 | } | |
4145 | else | |
4146 | error ("No selected frame."); | |
4147 | } | |
4148 | else | |
4149 | error ("No default breakpoint address now."); | |
4150 | } | |
4151 | else | |
4152 | { | |
4153 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
4154 | strcpy (addr_string, arg); | |
4155 | } | |
4156 | ||
4157 | if (if_arg) | |
4158 | { | |
4159 | extra_args = arg; | |
c5aa993b JM |
4160 | extra_args_len = strlen (arg); |
4161 | } | |
4162 | else if (arg) | |
4163 | { | |
4164 | /* get the stuff after the function name or address */ | |
4165 | extra_args = strchr (arg, ' '); | |
4166 | if (extra_args) | |
4167 | { | |
4168 | extra_args++; | |
4169 | extra_args_len = strlen (extra_args); | |
4170 | } | |
c906108c | 4171 | } |
c906108c SS |
4172 | |
4173 | sals.sals = NULL; | |
4174 | sals.nelts = 0; | |
4175 | ||
c5aa993b JM |
4176 | beg_addr_string = addr_string; |
4177 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
4178 | (char ***) NULL); | |
c906108c SS |
4179 | |
4180 | free (beg_addr_string); | |
4181 | old_chain = make_cleanup (free, sals.sals); | |
4182 | for (i = 0; (i < sals.nelts); i++) | |
4183 | { | |
4184 | sal = sals.sals[i]; | |
c5aa993b | 4185 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c SS |
4186 | { |
4187 | break_string = (char *) xmalloc (extra_args_len + 26); | |
4188 | if (extra_args_len) | |
4189 | sprintf (break_string, "*0x%x %s", high, extra_args); | |
4190 | else | |
4191 | sprintf (break_string, "*0x%x", high); | |
4192 | break_command_1 (break_string, flag, from_tty); | |
c5aa993b | 4193 | free (break_string); |
c906108c SS |
4194 | } |
4195 | else | |
4196 | error ("No function contains the specified address"); | |
4197 | } | |
4198 | if (sals.nelts > 1) | |
4199 | { | |
53a5351d JM |
4200 | warning ("Multiple breakpoints were set.\n"); |
4201 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4202 | } |
c5aa993b | 4203 | do_cleanups (old_chain); |
c906108c SS |
4204 | } |
4205 | ||
4206 | ||
4207 | /* Helper function for break_command_1 and disassemble_command. */ | |
4208 | ||
4209 | void | |
4210 | resolve_sal_pc (sal) | |
4211 | struct symtab_and_line *sal; | |
4212 | { | |
4213 | CORE_ADDR pc; | |
4214 | ||
4215 | if (sal->pc == 0 && sal->symtab != NULL) | |
4216 | { | |
4217 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
4218 | error ("No line %d in file \"%s\".", | |
4219 | sal->line, sal->symtab->filename); | |
4220 | sal->pc = pc; | |
4221 | } | |
4222 | ||
4223 | if (sal->section == 0 && sal->symtab != NULL) | |
4224 | { | |
4225 | struct blockvector *bv; | |
c5aa993b JM |
4226 | struct block *b; |
4227 | struct symbol *sym; | |
4228 | int index; | |
c906108c | 4229 | |
c5aa993b | 4230 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
4231 | if (bv != NULL) |
4232 | { | |
c5aa993b | 4233 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
4234 | sym = block_function (b); |
4235 | if (sym != NULL) | |
4236 | { | |
4237 | fixup_symbol_section (sym, sal->symtab->objfile); | |
4238 | sal->section = SYMBOL_BFD_SECTION (sym); | |
4239 | } | |
4240 | else | |
4241 | { | |
4242 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
4243 | have to look harder. This case can be executed if we have |
4244 | line numbers but no functions (as can happen in assembly | |
4245 | source). */ | |
c906108c | 4246 | |
c5aa993b | 4247 | struct minimal_symbol *msym; |
c906108c SS |
4248 | |
4249 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
4250 | if (msym) | |
4251 | sal->section = SYMBOL_BFD_SECTION (msym); | |
4252 | } | |
4253 | } | |
4254 | } | |
4255 | } | |
4256 | ||
4257 | void | |
4258 | break_command (arg, from_tty) | |
4259 | char *arg; | |
4260 | int from_tty; | |
4261 | { | |
4262 | break_command_1 (arg, 0, from_tty); | |
4263 | } | |
4264 | ||
7a292a7a | 4265 | static void |
c906108c SS |
4266 | break_at_finish_command (arg, from_tty) |
4267 | char *arg; | |
4268 | int from_tty; | |
4269 | { | |
4270 | break_at_finish_command_1 (arg, 0, from_tty); | |
4271 | } | |
4272 | ||
7a292a7a | 4273 | static void |
c906108c SS |
4274 | break_at_finish_at_depth_command (arg, from_tty) |
4275 | char *arg; | |
4276 | int from_tty; | |
4277 | { | |
4278 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
4279 | } | |
4280 | ||
4281 | void | |
4282 | tbreak_command (arg, from_tty) | |
4283 | char *arg; | |
4284 | int from_tty; | |
4285 | { | |
4286 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
4287 | } | |
4288 | ||
7a292a7a | 4289 | static void |
c906108c SS |
4290 | tbreak_at_finish_command (arg, from_tty) |
4291 | char *arg; | |
4292 | int from_tty; | |
4293 | { | |
4294 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
4295 | } | |
4296 | ||
4297 | static void | |
4298 | hbreak_command (arg, from_tty) | |
4299 | char *arg; | |
4300 | int from_tty; | |
4301 | { | |
4302 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
4303 | } | |
4304 | ||
4305 | static void | |
4306 | thbreak_command (arg, from_tty) | |
4307 | char *arg; | |
4308 | int from_tty; | |
4309 | { | |
4310 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
4311 | } | |
4312 | ||
4313 | static void | |
4314 | stop_command (arg, from_tty) | |
4315 | char *arg; | |
4316 | int from_tty; | |
4317 | { | |
4318 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
4319 | Usage: stop in <function | address>\n\ | |
4320 | stop at <line>\n"); | |
4321 | } | |
4322 | ||
4323 | static void | |
4324 | stopin_command (arg, from_tty) | |
4325 | char *arg; | |
4326 | int from_tty; | |
4327 | { | |
4328 | int badInput = 0; | |
4329 | ||
c5aa993b | 4330 | if (arg == (char *) NULL) |
c906108c SS |
4331 | badInput = 1; |
4332 | else if (*arg != '*') | |
4333 | { | |
4334 | char *argptr = arg; | |
4335 | int hasColon = 0; | |
4336 | ||
53a5351d JM |
4337 | /* look for a ':'. If this is a line number specification, then |
4338 | say it is bad, otherwise, it should be an address or | |
4339 | function/method name */ | |
c906108c | 4340 | while (*argptr && !hasColon) |
c5aa993b JM |
4341 | { |
4342 | hasColon = (*argptr == ':'); | |
4343 | argptr++; | |
4344 | } | |
c906108c SS |
4345 | |
4346 | if (hasColon) | |
c5aa993b | 4347 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 4348 | else |
c5aa993b | 4349 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
4350 | } |
4351 | ||
4352 | if (badInput) | |
c5aa993b | 4353 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
4354 | else |
4355 | break_command_1 (arg, 0, from_tty); | |
4356 | } | |
4357 | ||
4358 | static void | |
4359 | stopat_command (arg, from_tty) | |
4360 | char *arg; | |
4361 | int from_tty; | |
4362 | { | |
4363 | int badInput = 0; | |
4364 | ||
c5aa993b | 4365 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
4366 | badInput = 1; |
4367 | else | |
4368 | { | |
4369 | char *argptr = arg; | |
4370 | int hasColon = 0; | |
4371 | ||
4372 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 4373 | it is probably a line number. */ |
c906108c | 4374 | while (*argptr && !hasColon) |
c5aa993b JM |
4375 | { |
4376 | hasColon = (*argptr == ':'); | |
4377 | argptr++; | |
4378 | } | |
c906108c SS |
4379 | |
4380 | if (hasColon) | |
c5aa993b | 4381 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 4382 | else |
c5aa993b | 4383 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
4384 | } |
4385 | ||
4386 | if (badInput) | |
c5aa993b | 4387 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
4388 | else |
4389 | break_command_1 (arg, 0, from_tty); | |
4390 | } | |
4391 | ||
4392 | /* ARGSUSED */ | |
53a5351d JM |
4393 | /* accessflag: hw_write: watch write, |
4394 | hw_read: watch read, | |
4395 | hw_access: watch access (read or write) */ | |
c906108c SS |
4396 | static void |
4397 | watch_command_1 (arg, accessflag, from_tty) | |
4398 | char *arg; | |
4399 | int accessflag; | |
4400 | int from_tty; | |
4401 | { | |
4402 | struct breakpoint *b; | |
4403 | struct symtab_and_line sal; | |
4404 | struct expression *exp; | |
4405 | struct block *exp_valid_block; | |
4406 | struct value *val, *mark; | |
4407 | struct frame_info *frame; | |
4408 | struct frame_info *prev_frame = NULL; | |
4409 | char *exp_start = NULL; | |
4410 | char *exp_end = NULL; | |
4411 | char *tok, *end_tok; | |
4412 | int toklen; | |
4413 | char *cond_start = NULL; | |
4414 | char *cond_end = NULL; | |
4415 | struct expression *cond = NULL; | |
4416 | int i, other_type_used, target_resources_ok = 0; | |
4417 | enum bptype bp_type; | |
4418 | int mem_cnt = 0; | |
4419 | ||
c5aa993b JM |
4420 | INIT_SAL (&sal); /* initialize to zeroes */ |
4421 | ||
c906108c SS |
4422 | /* Parse arguments. */ |
4423 | innermost_block = NULL; | |
4424 | exp_start = arg; | |
4425 | exp = parse_exp_1 (&arg, 0, 0); | |
4426 | exp_end = arg; | |
4427 | exp_valid_block = innermost_block; | |
4428 | mark = value_mark (); | |
4429 | val = evaluate_expression (exp); | |
4430 | release_value (val); | |
4431 | if (VALUE_LAZY (val)) | |
4432 | value_fetch_lazy (val); | |
4433 | ||
4434 | tok = arg; | |
4435 | while (*tok == ' ' || *tok == '\t') | |
4436 | tok++; | |
4437 | end_tok = tok; | |
4438 | ||
4439 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4440 | end_tok++; | |
4441 | ||
4442 | toklen = end_tok - tok; | |
4443 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4444 | { | |
4445 | tok = cond_start = end_tok + 1; | |
4446 | cond = parse_exp_1 (&tok, 0, 0); | |
4447 | cond_end = tok; | |
4448 | } | |
4449 | if (*tok) | |
c5aa993b | 4450 | error ("Junk at end of command."); |
c906108c | 4451 | |
53a5351d | 4452 | if (accessflag == hw_read) |
c5aa993b | 4453 | bp_type = bp_read_watchpoint; |
53a5351d | 4454 | else if (accessflag == hw_access) |
c5aa993b JM |
4455 | bp_type = bp_access_watchpoint; |
4456 | else | |
4457 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
4458 | |
4459 | mem_cnt = can_use_hardware_watchpoint (val); | |
4460 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
4461 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
4462 | if (mem_cnt != 0) |
4463 | { | |
4464 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
4465 | target_resources_ok = |
4466 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
4467 | other_type_used); | |
c5aa993b | 4468 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
4469 | error ("Target does not support this type of hardware watchpoint."); |
4470 | ||
c5aa993b | 4471 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 4472 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 4473 | } |
c906108c SS |
4474 | |
4475 | #if defined(HPUXHPPA) | |
c5aa993b | 4476 | /* On HP-UX if you set a h/w |
c906108c SS |
4477 | watchpoint before the "run" command, the inferior dies with a e.g., |
4478 | SIGILL once you start it. I initially believed this was due to a | |
4479 | bad interaction between page protection traps and the initial | |
4480 | startup sequence by the dynamic linker. | |
4481 | ||
4482 | However, I tried avoiding that by having HP-UX's implementation of | |
4483 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid | |
4484 | yet, which forced slow watches before a "run" or "attach", and it | |
4485 | still fails somewhere in the startup code. | |
4486 | ||
4487 | Until I figure out what's happening, I'm disallowing watches altogether | |
4488 | before the "run" or "attach" command. We'll tell the user they must | |
4489 | set watches after getting the program started. */ | |
c5aa993b | 4490 | if (!target_has_execution) |
c906108c SS |
4491 | { |
4492 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
4493 | return; | |
4494 | } | |
4495 | #endif /* HPUXHPPA */ | |
c5aa993b | 4496 | |
c906108c SS |
4497 | /* Now set up the breakpoint. */ |
4498 | b = set_raw_breakpoint (sal); | |
4499 | set_breakpoint_count (breakpoint_count + 1); | |
4500 | b->number = breakpoint_count; | |
4501 | b->disposition = donttouch; | |
4502 | b->exp = exp; | |
4503 | b->exp_valid_block = exp_valid_block; | |
4504 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
4505 | b->val = val; | |
4506 | b->cond = cond; | |
4507 | if (cond_start) | |
4508 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
4509 | else | |
4510 | b->cond_string = 0; | |
c5aa993b | 4511 | |
c906108c SS |
4512 | frame = block_innermost_frame (exp_valid_block); |
4513 | if (frame) | |
4514 | { | |
4515 | prev_frame = get_prev_frame (frame); | |
4516 | b->watchpoint_frame = frame->frame; | |
4517 | } | |
4518 | else | |
c5aa993b | 4519 | b->watchpoint_frame = (CORE_ADDR) 0; |
c906108c SS |
4520 | |
4521 | if (mem_cnt && target_resources_ok > 0) | |
4522 | b->type = bp_type; | |
4523 | else | |
4524 | b->type = bp_watchpoint; | |
4525 | ||
4526 | /* If the expression is "local", then set up a "watchpoint scope" | |
4527 | breakpoint at the point where we've left the scope of the watchpoint | |
4528 | expression. */ | |
4529 | if (innermost_block) | |
4530 | { | |
4531 | if (prev_frame) | |
4532 | { | |
4533 | struct breakpoint *scope_breakpoint; | |
4534 | struct symtab_and_line scope_sal; | |
4535 | ||
4536 | INIT_SAL (&scope_sal); /* initialize to zeroes */ | |
c5aa993b | 4537 | scope_sal.pc = get_frame_pc (prev_frame); |
c906108c SS |
4538 | scope_sal.section = find_pc_overlay (scope_sal.pc); |
4539 | ||
4540 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
4541 | set_breakpoint_count (breakpoint_count + 1); | |
4542 | scope_breakpoint->number = breakpoint_count; | |
4543 | ||
4544 | scope_breakpoint->type = bp_watchpoint_scope; | |
4545 | scope_breakpoint->enable = enabled; | |
4546 | ||
4547 | /* Automatically delete the breakpoint when it hits. */ | |
4548 | scope_breakpoint->disposition = del; | |
4549 | ||
4550 | /* Only break in the proper frame (help with recursion). */ | |
4551 | scope_breakpoint->frame = prev_frame->frame; | |
4552 | ||
4553 | /* Set the address at which we will stop. */ | |
4554 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
4555 | ||
4556 | /* The scope breakpoint is related to the watchpoint. We | |
4557 | will need to act on them together. */ | |
4558 | b->related_breakpoint = scope_breakpoint; | |
4559 | } | |
4560 | } | |
4561 | value_free_to_mark (mark); | |
4562 | mention (b); | |
4563 | } | |
4564 | ||
4565 | /* Return count of locations need to be watched and can be handled | |
4566 | in hardware. If the watchpoint can not be handled | |
4567 | in hardware return zero. */ | |
4568 | ||
4569 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d JM |
4570 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
4571 | ((BYTE_SIZE) <= (REGISTER_SIZE)) | |
4572 | #endif | |
4573 | ||
4574 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
4575 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
4576 | TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN) | |
c906108c SS |
4577 | #endif |
4578 | ||
4579 | static int | |
4580 | can_use_hardware_watchpoint (v) | |
4581 | struct value *v; | |
4582 | { | |
4583 | int found_memory_cnt = 0; | |
4584 | ||
4585 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 4586 | if (!can_use_hw_watchpoints) |
c906108c | 4587 | return 0; |
c5aa993b | 4588 | |
c906108c SS |
4589 | /* Make sure all the intermediate values are in memory. Also make sure |
4590 | we found at least one memory expression. Guards against watch 0x12345, | |
4591 | which is meaningless, but could cause errors if one tries to insert a | |
4592 | hardware watchpoint for the constant expression. */ | |
c5aa993b | 4593 | for (; v; v = v->next) |
c906108c SS |
4594 | { |
4595 | if (v->lval == lval_memory) | |
4596 | { | |
53a5351d JM |
4597 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); |
4598 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
4599 | ||
4600 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
4601 | return 0; | |
4602 | else | |
c906108c | 4603 | found_memory_cnt++; |
c5aa993b | 4604 | } |
c906108c | 4605 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
4606 | return 0; /* ??? What does this represent? */ |
4607 | else if (v->lval == lval_register) | |
4608 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
4609 | } |
4610 | ||
4611 | /* The expression itself looks suitable for using a hardware | |
4612 | watchpoint, but give the target machine a chance to reject it. */ | |
4613 | return found_memory_cnt; | |
4614 | } | |
4615 | ||
c5aa993b JM |
4616 | static void |
4617 | watch_command (arg, from_tty) | |
c906108c SS |
4618 | char *arg; |
4619 | int from_tty; | |
4620 | { | |
53a5351d | 4621 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
4622 | } |
4623 | ||
c5aa993b JM |
4624 | static void |
4625 | rwatch_command (arg, from_tty) | |
c906108c SS |
4626 | char *arg; |
4627 | int from_tty; | |
4628 | { | |
53a5351d | 4629 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
4630 | } |
4631 | ||
c5aa993b JM |
4632 | static void |
4633 | awatch_command (arg, from_tty) | |
c906108c SS |
4634 | char *arg; |
4635 | int from_tty; | |
4636 | { | |
53a5351d | 4637 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 4638 | } |
c906108c | 4639 | \f |
c5aa993b | 4640 | |
43ff13b4 | 4641 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
4642 | because it uses the mechanisms of breakpoints. */ |
4643 | ||
43ff13b4 JM |
4644 | /* This function is called by fetch_inferior_event via the |
4645 | cmd_continuation pointer, to complete the until command. It takes | |
4646 | care of cleaning up the temporary breakpoints set up by the until | |
4647 | command. */ | |
4648 | void | |
4649 | until_break_command_continuation (arg) | |
4650 | struct continuation_arg *arg; | |
4651 | { | |
4652 | /* Do all the exec cleanups, which at this point should only be the | |
4653 | one set up in the first part of the until_break_command | |
4654 | function. */ | |
4655 | do_exec_cleanups (ALL_CLEANUPS); | |
4656 | } | |
4657 | ||
c906108c SS |
4658 | /* ARGSUSED */ |
4659 | void | |
4660 | until_break_command (arg, from_tty) | |
4661 | char *arg; | |
4662 | int from_tty; | |
4663 | { | |
4664 | struct symtabs_and_lines sals; | |
4665 | struct symtab_and_line sal; | |
4666 | struct frame_info *prev_frame = get_prev_frame (selected_frame); | |
4667 | struct breakpoint *breakpoint; | |
4668 | struct cleanup *old_chain; | |
43ff13b4 | 4669 | struct continuation_arg *arg1, *arg2; |
c906108c SS |
4670 | |
4671 | clear_proceed_status (); | |
4672 | ||
4673 | /* Set a breakpoint where the user wants it and at return from | |
4674 | this function */ | |
c5aa993b | 4675 | |
c906108c SS |
4676 | if (default_breakpoint_valid) |
4677 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 4678 | default_breakpoint_line, (char ***) NULL); |
c906108c | 4679 | else |
53a5351d JM |
4680 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
4681 | 0, (char ***) NULL); | |
c5aa993b | 4682 | |
c906108c SS |
4683 | if (sals.nelts != 1) |
4684 | error ("Couldn't get information on specified line."); | |
c5aa993b | 4685 | |
c906108c | 4686 | sal = sals.sals[0]; |
c5aa993b JM |
4687 | free ((PTR) sals.sals); /* malloc'd, so freed */ |
4688 | ||
c906108c SS |
4689 | if (*arg) |
4690 | error ("Junk at end of arguments."); | |
c5aa993b | 4691 | |
c906108c | 4692 | resolve_sal_pc (&sal); |
c5aa993b | 4693 | |
c906108c | 4694 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
c5aa993b | 4695 | |
43ff13b4 | 4696 | if (!async_p || !target_has_async) |
53a5351d JM |
4697 | old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, |
4698 | breakpoint); | |
43ff13b4 JM |
4699 | else |
4700 | make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); | |
4701 | ||
4702 | /* If we are running asynchronously, and the target supports async | |
4703 | execution, we are not waiting for the target to stop, in the call | |
4704 | tp proceed, below. This means that we cannot delete the | |
4705 | brekpoints until the target has actually stopped. The only place | |
4706 | where we get a chance to do that is in fetch_inferior_event, so | |
4707 | we must set things up for that. */ | |
4708 | ||
4709 | if (async_p && target_has_async) | |
4710 | { | |
4711 | /* In this case we don't need args for the continuation, because | |
c5aa993b JM |
4712 | all it needs to do is do the cleanups in the |
4713 | exec_cleanup_chain, which will be only those inserted by this | |
4714 | function. We can get away by using ALL_CLEANUPS. */ | |
43ff13b4 JM |
4715 | add_continuation (until_break_command_continuation, NULL); |
4716 | } | |
c906108c SS |
4717 | |
4718 | /* Keep within the current frame */ | |
c5aa993b | 4719 | |
c906108c SS |
4720 | if (prev_frame) |
4721 | { | |
4722 | sal = find_pc_line (prev_frame->pc, 0); | |
4723 | sal.pc = prev_frame->pc; | |
4724 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); | |
43ff13b4 JM |
4725 | if (!async_p || !target_has_async) |
4726 | make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); | |
4727 | else | |
4728 | make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); | |
c906108c | 4729 | } |
c5aa993b | 4730 | |
c906108c | 4731 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
4732 | /* Do the cleanups now, anly if we are not running asynchronously, |
4733 | of if we are, but the target is still synchronous. */ | |
4734 | if (!async_p || !target_has_async) | |
c5aa993b | 4735 | do_cleanups (old_chain); |
c906108c SS |
4736 | } |
4737 | \f | |
4738 | #if 0 | |
4739 | /* These aren't used; I don't konw what they were for. */ | |
4740 | /* Set a breakpoint at the catch clause for NAME. */ | |
4741 | static int | |
4742 | catch_breakpoint (name) | |
4743 | char *name; | |
4744 | { | |
4745 | } | |
4746 | ||
4747 | static int | |
4748 | disable_catch_breakpoint () | |
4749 | { | |
4750 | } | |
4751 | ||
4752 | static int | |
4753 | delete_catch_breakpoint () | |
4754 | { | |
4755 | } | |
4756 | ||
4757 | static int | |
4758 | enable_catch_breakpoint () | |
4759 | { | |
4760 | } | |
4761 | #endif /* 0 */ | |
4762 | ||
4763 | struct sal_chain | |
4764 | { | |
4765 | struct sal_chain *next; | |
4766 | struct symtab_and_line sal; | |
4767 | }; | |
4768 | ||
7a292a7a | 4769 | #if 0 |
c906108c SS |
4770 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
4771 | had been commented out in the v.4.16 sources, and stays | |
4772 | disabled there now because "catch NAME" syntax isn't allowed. | |
4773 | pai/1997-07-11 */ | |
4774 | /* This isn't used; I don't know what it was for. */ | |
4775 | /* For each catch clause identified in ARGS, run FUNCTION | |
4776 | with that clause as an argument. */ | |
4777 | static struct symtabs_and_lines | |
4778 | map_catch_names (args, function) | |
4779 | char *args; | |
c5aa993b | 4780 | int (*function) (); |
c906108c SS |
4781 | { |
4782 | register char *p = args; | |
4783 | register char *p1; | |
4784 | struct symtabs_and_lines sals; | |
4785 | #if 0 | |
4786 | struct sal_chain *sal_chain = 0; | |
4787 | #endif | |
4788 | ||
4789 | if (p == 0) | |
4790 | error_no_arg ("one or more catch names"); | |
4791 | ||
4792 | sals.nelts = 0; | |
4793 | sals.sals = NULL; | |
4794 | ||
4795 | while (*p) | |
4796 | { | |
4797 | p1 = p; | |
4798 | /* Don't swallow conditional part. */ | |
4799 | if (p1[0] == 'i' && p1[1] == 'f' | |
4800 | && (p1[2] == ' ' || p1[2] == '\t')) | |
4801 | break; | |
4802 | ||
4803 | if (isalpha (*p1)) | |
4804 | { | |
4805 | p1++; | |
4806 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
4807 | p1++; | |
4808 | } | |
4809 | ||
4810 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
4811 | error ("Arguments must be catch names."); | |
4812 | ||
4813 | *p1 = 0; | |
4814 | #if 0 | |
4815 | if (function (p)) | |
4816 | { | |
4817 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 4818 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
4819 | next->next = sal_chain; |
4820 | next->sal = get_catch_sal (p); | |
4821 | sal_chain = next; | |
4822 | goto win; | |
4823 | } | |
4824 | #endif | |
4825 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
4826 | #if 0 | |
4827 | win: | |
4828 | #endif | |
4829 | p = p1; | |
c5aa993b JM |
4830 | while (*p == ' ' || *p == '\t') |
4831 | p++; | |
c906108c SS |
4832 | } |
4833 | } | |
7a292a7a | 4834 | #endif |
c906108c SS |
4835 | |
4836 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
4837 | ||
4838 | static struct symtabs_and_lines | |
4839 | get_catch_sals (this_level_only) | |
4840 | int this_level_only; | |
4841 | { | |
4842 | register struct blockvector *bl; | |
4843 | register struct block *block; | |
4844 | int index, have_default = 0; | |
4845 | CORE_ADDR pc; | |
4846 | struct symtabs_and_lines sals; | |
4847 | struct sal_chain *sal_chain = 0; | |
4848 | char *blocks_searched; | |
4849 | ||
4850 | /* Not sure whether an error message is always the correct response, | |
4851 | but it's better than a core dump. */ | |
4852 | if (selected_frame == NULL) | |
4853 | error ("No selected frame."); | |
4854 | block = get_frame_block (selected_frame); | |
4855 | pc = selected_frame->pc; | |
4856 | ||
4857 | sals.nelts = 0; | |
4858 | sals.sals = NULL; | |
4859 | ||
4860 | if (block == 0) | |
4861 | error ("No symbol table info available.\n"); | |
4862 | ||
4863 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
4864 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4865 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4866 | ||
4867 | while (block != 0) | |
4868 | { | |
4869 | CORE_ADDR end = BLOCK_END (block) - 4; | |
4870 | int last_index; | |
4871 | ||
4872 | if (bl != blockvector_for_pc (end, &index)) | |
4873 | error ("blockvector blotch"); | |
4874 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
4875 | error ("blockvector botch"); | |
4876 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
4877 | index += 1; | |
4878 | ||
4879 | /* Don't print out blocks that have gone by. */ | |
4880 | while (index < last_index | |
4881 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
4882 | index++; | |
4883 | ||
4884 | while (index < last_index | |
4885 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
4886 | { | |
4887 | if (blocks_searched[index] == 0) | |
4888 | { | |
4889 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
4890 | int nsyms; | |
4891 | register int i; | |
4892 | register struct symbol *sym; | |
4893 | ||
4894 | nsyms = BLOCK_NSYMS (b); | |
4895 | ||
4896 | for (i = 0; i < nsyms; i++) | |
4897 | { | |
4898 | sym = BLOCK_SYM (b, i); | |
4899 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
4900 | { | |
4901 | if (have_default) | |
4902 | continue; | |
4903 | have_default = 1; | |
4904 | } | |
4905 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
4906 | { | |
4907 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 4908 | alloca (sizeof (struct sal_chain)); |
c906108c | 4909 | next->next = sal_chain; |
53a5351d JM |
4910 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
4911 | 0); | |
c906108c SS |
4912 | sal_chain = next; |
4913 | } | |
4914 | } | |
4915 | blocks_searched[index] = 1; | |
4916 | } | |
4917 | index++; | |
4918 | } | |
4919 | if (have_default) | |
4920 | break; | |
4921 | if (sal_chain && this_level_only) | |
4922 | break; | |
4923 | ||
4924 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
4925 | Don't continue to its superblock, the block of |
4926 | per-file symbols. */ | |
c906108c SS |
4927 | if (BLOCK_FUNCTION (block)) |
4928 | break; | |
4929 | block = BLOCK_SUPERBLOCK (block); | |
4930 | } | |
4931 | ||
4932 | if (sal_chain) | |
4933 | { | |
4934 | struct sal_chain *tmp_chain; | |
4935 | ||
4936 | /* Count the number of entries. */ | |
4937 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
4938 | tmp_chain = tmp_chain->next) | |
4939 | index++; | |
4940 | ||
4941 | sals.nelts = index; | |
4942 | sals.sals = (struct symtab_and_line *) | |
4943 | xmalloc (index * sizeof (struct symtab_and_line)); | |
4944 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
4945 | sals.sals[index] = sal_chain->sal; | |
4946 | } | |
4947 | ||
4948 | return sals; | |
4949 | } | |
4950 | ||
4951 | static void | |
4952 | ep_skip_leading_whitespace (s) | |
7a292a7a | 4953 | char **s; |
c906108c | 4954 | { |
c5aa993b JM |
4955 | if ((s == NULL) || (*s == NULL)) |
4956 | return; | |
4957 | while (isspace (**s)) | |
4958 | *s += 1; | |
c906108c | 4959 | } |
c5aa993b | 4960 | |
c906108c SS |
4961 | /* This function examines a string, and attempts to find a token |
4962 | that might be an event name in the leading characters. If a | |
4963 | possible match is found, a pointer to the last character of | |
4964 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 4965 | |
c906108c SS |
4966 | static char * |
4967 | ep_find_event_name_end (arg) | |
7a292a7a | 4968 | char *arg; |
c906108c | 4969 | { |
c5aa993b JM |
4970 | char *s = arg; |
4971 | char *event_name_end = NULL; | |
4972 | ||
c906108c SS |
4973 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
4974 | if (arg == NULL) | |
4975 | return NULL; | |
c5aa993b | 4976 | |
c906108c | 4977 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
4978 | Basically, we're looking for alphanumerics and underscores; |
4979 | anything else delimites the token. */ | |
c906108c SS |
4980 | while (*s != '\0') |
4981 | { | |
c5aa993b JM |
4982 | if (!isalnum (*s) && (*s != '_')) |
4983 | break; | |
c906108c SS |
4984 | event_name_end = s; |
4985 | s++; | |
4986 | } | |
c5aa993b | 4987 | |
c906108c SS |
4988 | return event_name_end; |
4989 | } | |
4990 | ||
c5aa993b | 4991 | |
c906108c SS |
4992 | /* This function attempts to parse an optional "if <cond>" clause |
4993 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 4994 | |
c906108c SS |
4995 | Else, it returns a pointer to the condition string. (It does not |
4996 | attempt to evaluate the string against a particular block.) And, | |
4997 | it updates arg to point to the first character following the parsed | |
4998 | if clause in the arg string. */ | |
53a5351d | 4999 | |
c906108c SS |
5000 | static char * |
5001 | ep_parse_optional_if_clause (arg) | |
7a292a7a | 5002 | char **arg; |
c906108c | 5003 | { |
c5aa993b JM |
5004 | char *cond_string; |
5005 | ||
5006 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5007 | return NULL; |
c5aa993b | 5008 | |
c906108c SS |
5009 | /* Skip the "if" keyword. */ |
5010 | (*arg) += 2; | |
c5aa993b | 5011 | |
c906108c SS |
5012 | /* Skip any extra leading whitespace, and record the start of the |
5013 | condition string. */ | |
5014 | ep_skip_leading_whitespace (arg); | |
5015 | cond_string = *arg; | |
c5aa993b | 5016 | |
c906108c SS |
5017 | /* Assume that the condition occupies the remainder of the arg string. */ |
5018 | (*arg) += strlen (cond_string); | |
c5aa993b | 5019 | |
c906108c SS |
5020 | return cond_string; |
5021 | } | |
c5aa993b | 5022 | |
c906108c SS |
5023 | /* This function attempts to parse an optional filename from the arg |
5024 | string. If one is not found, it returns NULL. | |
c5aa993b | 5025 | |
c906108c SS |
5026 | Else, it returns a pointer to the parsed filename. (This function |
5027 | makes no attempt to verify that a file of that name exists, or is | |
5028 | accessible.) And, it updates arg to point to the first character | |
5029 | following the parsed filename in the arg string. | |
c5aa993b | 5030 | |
c906108c SS |
5031 | Note that clients needing to preserve the returned filename for |
5032 | future access should copy it to their own buffers. */ | |
5033 | static char * | |
5034 | ep_parse_optional_filename (arg) | |
7a292a7a | 5035 | char **arg; |
c906108c | 5036 | { |
c5aa993b JM |
5037 | static char filename[1024]; |
5038 | char *arg_p = *arg; | |
5039 | int i; | |
5040 | char c; | |
5041 | ||
c906108c SS |
5042 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5043 | return NULL; | |
c5aa993b JM |
5044 | |
5045 | for (i = 0;; i++) | |
c906108c SS |
5046 | { |
5047 | c = *arg_p; | |
5048 | if (isspace (c)) | |
c5aa993b | 5049 | c = '\0'; |
c906108c SS |
5050 | filename[i] = c; |
5051 | if (c == '\0') | |
c5aa993b | 5052 | break; |
c906108c SS |
5053 | arg_p++; |
5054 | } | |
5055 | *arg = arg_p; | |
c5aa993b | 5056 | |
c906108c SS |
5057 | return filename; |
5058 | } | |
c5aa993b | 5059 | |
c906108c SS |
5060 | /* Commands to deal with catching events, such as signals, exceptions, |
5061 | process start/exit, etc. */ | |
c5aa993b JM |
5062 | |
5063 | typedef enum | |
5064 | { | |
5065 | catch_fork, catch_vfork | |
5066 | } | |
5067 | catch_fork_kind; | |
5068 | ||
53a5351d JM |
5069 | static void catch_fork_command_1 PARAMS ((catch_fork_kind fork_kind, |
5070 | char *arg, | |
5071 | int tempflag, | |
5072 | int from_tty)); | |
7a292a7a | 5073 | |
c906108c SS |
5074 | static void |
5075 | catch_fork_command_1 (fork_kind, arg, tempflag, from_tty) | |
7a292a7a SS |
5076 | catch_fork_kind fork_kind; |
5077 | char *arg; | |
5078 | int tempflag; | |
5079 | int from_tty; | |
c906108c | 5080 | { |
c5aa993b JM |
5081 | char *cond_string = NULL; |
5082 | ||
c906108c | 5083 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5084 | |
c906108c | 5085 | /* The allowed syntax is: |
c5aa993b JM |
5086 | catch [v]fork |
5087 | catch [v]fork if <cond> | |
5088 | ||
c906108c SS |
5089 | First, check if there's an if clause. */ |
5090 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 5091 | |
c906108c SS |
5092 | if ((*arg != '\0') && !isspace (*arg)) |
5093 | error ("Junk at end of arguments."); | |
c5aa993b | 5094 | |
c906108c SS |
5095 | /* If this target supports it, create a fork or vfork catchpoint |
5096 | and enable reporting of such events. */ | |
c5aa993b JM |
5097 | switch (fork_kind) |
5098 | { | |
5099 | case catch_fork: | |
c906108c SS |
5100 | create_fork_event_catchpoint (tempflag, cond_string); |
5101 | break; | |
c5aa993b | 5102 | case catch_vfork: |
c906108c SS |
5103 | create_vfork_event_catchpoint (tempflag, cond_string); |
5104 | break; | |
c5aa993b | 5105 | default: |
c906108c SS |
5106 | error ("unsupported or unknown fork kind; cannot catch it"); |
5107 | break; | |
c5aa993b | 5108 | } |
c906108c SS |
5109 | } |
5110 | ||
5111 | static void | |
5112 | catch_exec_command_1 (arg, tempflag, from_tty) | |
7a292a7a SS |
5113 | char *arg; |
5114 | int tempflag; | |
5115 | int from_tty; | |
c906108c | 5116 | { |
c5aa993b | 5117 | char *cond_string = NULL; |
c906108c SS |
5118 | |
5119 | ep_skip_leading_whitespace (&arg); | |
5120 | ||
5121 | /* The allowed syntax is: | |
c5aa993b JM |
5122 | catch exec |
5123 | catch exec if <cond> | |
c906108c SS |
5124 | |
5125 | First, check if there's an if clause. */ | |
5126 | cond_string = ep_parse_optional_if_clause (&arg); | |
5127 | ||
5128 | if ((*arg != '\0') && !isspace (*arg)) | |
5129 | error ("Junk at end of arguments."); | |
5130 | ||
5131 | /* If this target supports it, create an exec catchpoint | |
5132 | and enable reporting of such events. */ | |
5133 | create_exec_event_catchpoint (tempflag, cond_string); | |
5134 | } | |
c5aa993b | 5135 | |
c906108c SS |
5136 | #if defined(SOLIB_ADD) |
5137 | static void | |
5138 | catch_load_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
5139 | char *arg; |
5140 | int tempflag; | |
5141 | int from_tty; | |
c906108c | 5142 | { |
c5aa993b JM |
5143 | char *dll_pathname = NULL; |
5144 | char *cond_string = NULL; | |
5145 | ||
c906108c | 5146 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5147 | |
c906108c | 5148 | /* The allowed syntax is: |
c5aa993b JM |
5149 | catch load |
5150 | catch load if <cond> | |
5151 | catch load <filename> | |
5152 | catch load <filename> if <cond> | |
5153 | ||
c906108c SS |
5154 | The user is not allowed to specify the <filename> after an |
5155 | if clause. | |
c5aa993b | 5156 | |
c906108c | 5157 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 5158 | |
c906108c SS |
5159 | First, check if there's an if clause. If so, then there |
5160 | cannot be a filename. */ | |
5161 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 5162 | |
c906108c SS |
5163 | /* If there was an if clause, then there cannot be a filename. |
5164 | Else, there might be a filename and an if clause. */ | |
5165 | if (cond_string == NULL) | |
5166 | { | |
5167 | dll_pathname = ep_parse_optional_filename (&arg); | |
5168 | ep_skip_leading_whitespace (&arg); | |
5169 | cond_string = ep_parse_optional_if_clause (&arg); | |
5170 | } | |
c5aa993b | 5171 | |
c906108c SS |
5172 | if ((*arg != '\0') && !isspace (*arg)) |
5173 | error ("Junk at end of arguments."); | |
c5aa993b | 5174 | |
c906108c SS |
5175 | /* Create a load breakpoint that only triggers when a load of |
5176 | the specified dll (or any dll, if no pathname was specified) | |
5177 | occurs. */ | |
53a5351d JM |
5178 | SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, |
5179 | dll_pathname, cond_string); | |
c906108c | 5180 | } |
c5aa993b | 5181 | |
c906108c SS |
5182 | static void |
5183 | catch_unload_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
5184 | char *arg; |
5185 | int tempflag; | |
5186 | int from_tty; | |
c906108c | 5187 | { |
c5aa993b JM |
5188 | char *dll_pathname = NULL; |
5189 | char *cond_string = NULL; | |
5190 | ||
c906108c | 5191 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5192 | |
c906108c | 5193 | /* The allowed syntax is: |
c5aa993b JM |
5194 | catch unload |
5195 | catch unload if <cond> | |
5196 | catch unload <filename> | |
5197 | catch unload <filename> if <cond> | |
5198 | ||
c906108c SS |
5199 | The user is not allowed to specify the <filename> after an |
5200 | if clause. | |
c5aa993b | 5201 | |
c906108c | 5202 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 5203 | |
c906108c SS |
5204 | First, check if there's an if clause. If so, then there |
5205 | cannot be a filename. */ | |
5206 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 5207 | |
c906108c SS |
5208 | /* If there was an if clause, then there cannot be a filename. |
5209 | Else, there might be a filename and an if clause. */ | |
5210 | if (cond_string == NULL) | |
5211 | { | |
5212 | dll_pathname = ep_parse_optional_filename (&arg); | |
5213 | ep_skip_leading_whitespace (&arg); | |
5214 | cond_string = ep_parse_optional_if_clause (&arg); | |
5215 | } | |
c5aa993b | 5216 | |
c906108c SS |
5217 | if ((*arg != '\0') && !isspace (*arg)) |
5218 | error ("Junk at end of arguments."); | |
c5aa993b | 5219 | |
c906108c SS |
5220 | /* Create an unload breakpoint that only triggers when an unload of |
5221 | the specified dll (or any dll, if no pathname was specified) | |
5222 | occurs. */ | |
53a5351d JM |
5223 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, |
5224 | dll_pathname, cond_string); | |
c906108c SS |
5225 | } |
5226 | #endif /* SOLIB_ADD */ | |
5227 | ||
5228 | /* Commands to deal with catching exceptions. */ | |
5229 | ||
5230 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 5231 | exception event callback */ |
c906108c SS |
5232 | |
5233 | static void | |
5234 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal) | |
7a292a7a SS |
5235 | int tempflag; |
5236 | char *cond_string; | |
5237 | enum exception_event_kind ex_event; | |
5238 | struct symtab_and_line *sal; | |
c906108c | 5239 | { |
c5aa993b JM |
5240 | struct breakpoint *b; |
5241 | int i; | |
5242 | int thread = -1; /* All threads. */ | |
c906108c | 5243 | |
c5aa993b | 5244 | if (!sal) /* no exception support? */ |
c906108c SS |
5245 | return; |
5246 | ||
5247 | b = set_raw_breakpoint (*sal); | |
5248 | set_breakpoint_count (breakpoint_count + 1); | |
5249 | b->number = breakpoint_count; | |
5250 | b->cond = NULL; | |
53a5351d JM |
5251 | b->cond_string = (cond_string == NULL) ? |
5252 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
5253 | b->thread = thread; |
5254 | b->addr_string = NULL; | |
5255 | b->enable = enabled; | |
5256 | b->disposition = tempflag ? del : donttouch; | |
5257 | switch (ex_event) | |
5258 | { | |
c5aa993b JM |
5259 | case EX_EVENT_THROW: |
5260 | b->type = bp_catch_throw; | |
5261 | break; | |
5262 | case EX_EVENT_CATCH: | |
5263 | b->type = bp_catch_catch; | |
5264 | break; | |
5265 | default: /* error condition */ | |
5266 | b->type = bp_none; | |
5267 | b->enable = disabled; | |
5268 | error ("Internal error -- invalid catchpoint kind"); | |
c906108c SS |
5269 | } |
5270 | mention (b); | |
5271 | } | |
5272 | ||
c5aa993b | 5273 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
5274 | |
5275 | static void | |
5276 | catch_exception_command_1 (ex_event, arg, tempflag, from_tty) | |
7a292a7a SS |
5277 | enum exception_event_kind ex_event; |
5278 | char *arg; | |
5279 | int tempflag; | |
5280 | int from_tty; | |
c906108c | 5281 | { |
c5aa993b JM |
5282 | char *cond_string = NULL; |
5283 | struct symtab_and_line *sal = NULL; | |
5284 | ||
c906108c | 5285 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5286 | |
c906108c SS |
5287 | cond_string = ep_parse_optional_if_clause (&arg); |
5288 | ||
5289 | if ((*arg != '\0') && !isspace (*arg)) | |
5290 | error ("Junk at end of arguments."); | |
5291 | ||
5292 | if ((ex_event != EX_EVENT_THROW) && | |
5293 | (ex_event != EX_EVENT_CATCH)) | |
5294 | error ("Unsupported or unknown exception event; cannot catch it"); | |
5295 | ||
5296 | /* See if we can find a callback routine */ | |
5297 | sal = target_enable_exception_callback (ex_event, 1); | |
5298 | ||
c5aa993b | 5299 | if (sal) |
c906108c SS |
5300 | { |
5301 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 5302 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 5303 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 5304 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 5305 | else |
53a5351d | 5306 | return; /* something went wrong with setting up callbacks */ |
c906108c | 5307 | } |
c5aa993b | 5308 | else |
c906108c SS |
5309 | { |
5310 | /* No callbacks from runtime system for exceptions. | |
5311 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
5312 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
5313 | { |
5314 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
5315 | } | |
c906108c | 5316 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
5317 | { |
5318 | /* Set a breakpoint on __raise_exception () */ | |
5319 | ||
53a5351d JM |
5320 | warning ("Unsupported with this platform/compiler combination."); |
5321 | warning ("Perhaps you can achieve the effect you want by setting"); | |
5322 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 5323 | } |
c906108c SS |
5324 | } |
5325 | } | |
5326 | ||
5327 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
5328 | inside a catch_errors */ | |
5329 | ||
5330 | static int | |
5331 | cover_target_enable_exception_callback (arg) | |
c5aa993b | 5332 | PTR arg; |
c906108c SS |
5333 | { |
5334 | args_for_catchpoint_enable *args = arg; | |
5335 | struct symtab_and_line *sal; | |
5336 | sal = target_enable_exception_callback (args->kind, args->enable); | |
5337 | if (sal == NULL) | |
5338 | return 0; | |
5339 | else if (sal == (struct symtab_and_line *) -1) | |
5340 | return -1; | |
5341 | else | |
c5aa993b | 5342 | return 1; /*is valid */ |
c906108c SS |
5343 | } |
5344 | ||
5345 | ||
5346 | ||
5347 | /* This is the original v.4.16 and earlier version of the | |
5348 | catch_command_1() function. Now that other flavours of "catch" | |
5349 | have been introduced, and since exception handling can be handled | |
5350 | in other ways (through target ops) also, this is used only for the | |
5351 | GNU C++ exception handling system. | |
5352 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
5353 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
5354 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 5355 | |
c906108c SS |
5356 | Called from catch_exception_command_1 () */ |
5357 | ||
5358 | ||
5359 | static void | |
5360 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty) | |
5361 | char *arg; | |
5362 | int tempflag; | |
5363 | int from_tty; | |
5364 | { | |
5365 | /* First, translate ARG into something we can deal with in terms | |
5366 | of breakpoints. */ | |
5367 | ||
5368 | struct symtabs_and_lines sals; | |
5369 | struct symtab_and_line sal; | |
5370 | register struct expression *cond = 0; | |
5371 | register struct breakpoint *b; | |
5372 | char *save_arg; | |
5373 | int i; | |
5374 | ||
c5aa993b | 5375 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
5376 | |
5377 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
5378 | are breakpointed. */ | |
5379 | ||
c5aa993b | 5380 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
5381 | && (arg[2] == ' ' || arg[2] == '\t'))) |
5382 | { | |
5383 | /* Grab all active catch clauses. */ | |
5384 | sals = get_catch_sals (0); | |
5385 | } | |
5386 | else | |
5387 | { | |
5388 | /* Grab selected catch clauses. */ | |
5389 | error ("catch NAME not implemented"); | |
5390 | ||
5391 | #if 0 | |
5392 | /* Not sure why this code has been disabled. I'm leaving | |
5393 | it disabled. We can never come here now anyway | |
5394 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 5395 | pai/1997-07-11 */ |
c906108c SS |
5396 | |
5397 | /* This isn't used; I don't know what it was for. */ | |
5398 | sals = map_catch_names (arg, catch_breakpoint); | |
5399 | #endif | |
5400 | } | |
5401 | ||
c5aa993b | 5402 | if (!sals.nelts) |
c906108c SS |
5403 | return; |
5404 | ||
5405 | save_arg = arg; | |
5406 | for (i = 0; i < sals.nelts; i++) | |
5407 | { | |
5408 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 5409 | |
c906108c SS |
5410 | while (arg && *arg) |
5411 | { | |
5412 | if (arg[0] == 'i' && arg[1] == 'f' | |
5413 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 5414 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
5415 | block_for_pc (sals.sals[i].pc), 0); |
5416 | else | |
5417 | error ("Junk at end of arguments."); | |
5418 | } | |
5419 | arg = save_arg; | |
5420 | } | |
5421 | ||
5422 | for (i = 0; i < sals.nelts; i++) | |
5423 | { | |
5424 | sal = sals.sals[i]; | |
5425 | ||
5426 | if (from_tty) | |
5427 | describe_other_breakpoints (sal.pc, sal.section); | |
5428 | ||
5429 | b = set_raw_breakpoint (sal); | |
5430 | set_breakpoint_count (breakpoint_count + 1); | |
5431 | b->number = breakpoint_count; | |
53a5351d JM |
5432 | |
5433 | /* Important -- this is an ordinary breakpoint. For platforms | |
5434 | with callback support for exceptions, | |
5435 | create_exception_catchpoint() will create special bp types | |
5436 | (bp_catch_catch and bp_catch_throw), and there is code in | |
5437 | insert_breakpoints() and elsewhere that depends on that. */ | |
5438 | b->type = bp_breakpoint; | |
c906108c SS |
5439 | |
5440 | b->cond = cond; | |
5441 | b->enable = enabled; | |
5442 | b->disposition = tempflag ? del : donttouch; | |
5443 | ||
5444 | mention (b); | |
5445 | } | |
5446 | ||
5447 | if (sals.nelts > 1) | |
5448 | { | |
53a5351d JM |
5449 | warning ("Multiple breakpoints were set."); |
5450 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5451 | } |
c5aa993b | 5452 | free ((PTR) sals.sals); |
c906108c SS |
5453 | } |
5454 | ||
5455 | #if 0 | |
5456 | /* This creates a temporary internal breakpoint | |
5457 | just to placate infrun */ | |
5458 | static struct breakpoint * | |
5459 | create_temp_exception_breakpoint (pc) | |
c5aa993b | 5460 | CORE_ADDR pc; |
c906108c SS |
5461 | { |
5462 | struct symtab_and_line sal; | |
5463 | struct breakpoint *b; | |
5464 | ||
c5aa993b | 5465 | INIT_SAL (&sal); |
c906108c SS |
5466 | sal.pc = pc; |
5467 | sal.symtab = NULL; | |
5468 | sal.line = 0; | |
5469 | ||
5470 | b = set_raw_breakpoint (sal); | |
5471 | if (!b) | |
5472 | error ("Internal error -- couldn't set temp exception breakpoint"); | |
5473 | ||
5474 | b->type = bp_breakpoint; | |
5475 | b->disposition = del; | |
5476 | b->enable = enabled; | |
5477 | b->silent = 1; | |
5478 | b->number = internal_breakpoint_number--; | |
5479 | return b; | |
5480 | } | |
5481 | #endif | |
5482 | ||
5483 | static void | |
5484 | catch_command_1 (arg, tempflag, from_tty) | |
c5aa993b JM |
5485 | char *arg; |
5486 | int tempflag; | |
5487 | int from_tty; | |
c906108c | 5488 | { |
c5aa993b | 5489 | |
c906108c SS |
5490 | /* The first argument may be an event name, such as "start" or "load". |
5491 | If so, then handle it as such. If it doesn't match an event name, | |
5492 | then attempt to interpret it as an exception name. (This latter is | |
5493 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 5494 | |
c906108c | 5495 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
5496 | char *arg1_start = arg; |
5497 | char *arg1_end; | |
5498 | int arg1_length; | |
5499 | ||
c906108c SS |
5500 | if (arg1_start == NULL) |
5501 | { | |
c5aa993b | 5502 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
5503 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
5504 | /* return; */ | |
c5aa993b | 5505 | /* Now, this is not allowed */ |
c906108c SS |
5506 | error ("Catch requires an event name."); |
5507 | ||
5508 | } | |
5509 | arg1_end = ep_find_event_name_end (arg1_start); | |
5510 | if (arg1_end == NULL) | |
5511 | error ("catch requires an event"); | |
5512 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 5513 | |
c906108c SS |
5514 | /* Try to match what we found against known event names. */ |
5515 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
5516 | { | |
5517 | error ("Catch of signal not yet implemented"); | |
5518 | } | |
5519 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
5520 | { | |
53a5351d JM |
5521 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
5522 | tempflag, from_tty); | |
c906108c SS |
5523 | } |
5524 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
5525 | { | |
53a5351d JM |
5526 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
5527 | tempflag, from_tty); | |
c906108c SS |
5528 | } |
5529 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
5530 | { | |
5531 | error ("Catch of thread_start not yet implemented"); | |
5532 | } | |
5533 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
5534 | { | |
5535 | error ("Catch of thread_exit not yet implemented"); | |
5536 | } | |
5537 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
5538 | { | |
5539 | error ("Catch of thread_join not yet implemented"); | |
5540 | } | |
5541 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
5542 | { | |
5543 | error ("Catch of start not yet implemented"); | |
5544 | } | |
5545 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
5546 | { | |
5547 | error ("Catch of exit not yet implemented"); | |
5548 | } | |
5549 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
5550 | { | |
5551 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 5552 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
5553 | #else |
5554 | error ("Catch of fork not yet implemented"); | |
5555 | #endif | |
5556 | } | |
5557 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
5558 | { | |
5559 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 5560 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
5561 | #else |
5562 | error ("Catch of vfork not yet implemented"); | |
5563 | #endif | |
5564 | } | |
5565 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
5566 | { | |
5567 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 5568 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
5569 | #else |
5570 | error ("Catch of exec not yet implemented"); | |
5571 | #endif | |
5572 | } | |
5573 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
5574 | { | |
5575 | #if defined(SOLIB_ADD) | |
c5aa993b | 5576 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
5577 | #else |
5578 | error ("Catch of load not implemented"); | |
5579 | #endif | |
5580 | } | |
5581 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
5582 | { | |
5583 | #if defined(SOLIB_ADD) | |
c5aa993b | 5584 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
5585 | #else |
5586 | error ("Catch of load not implemented"); | |
5587 | #endif | |
5588 | } | |
5589 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
5590 | { | |
5591 | error ("Catch of stop not yet implemented"); | |
5592 | } | |
c5aa993b | 5593 | |
c906108c SS |
5594 | /* This doesn't appear to be an event name */ |
5595 | ||
5596 | else | |
5597 | { | |
5598 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 5599 | as the name of an exception */ |
c906108c | 5600 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 5601 | /* Now this is not allowed */ |
c906108c SS |
5602 | error ("Unknown event kind specified for catch"); |
5603 | ||
5604 | } | |
5605 | } | |
5606 | ||
5607 | /* Used by the gui, could be made a worker for other things. */ | |
5608 | ||
5609 | struct breakpoint * | |
5610 | set_breakpoint_sal (sal) | |
5611 | struct symtab_and_line sal; | |
5612 | { | |
5613 | struct breakpoint *b; | |
5614 | b = set_raw_breakpoint (sal); | |
5615 | set_breakpoint_count (breakpoint_count + 1); | |
5616 | b->number = breakpoint_count; | |
5617 | b->type = bp_breakpoint; | |
5618 | b->cond = 0; | |
5619 | b->thread = -1; | |
5620 | return b; | |
5621 | } | |
5622 | ||
5623 | #if 0 | |
5624 | /* These aren't used; I don't know what they were for. */ | |
5625 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
5626 | static void | |
5627 | disable_catch (args) | |
5628 | char *args; | |
5629 | { | |
5630 | /* Map the disable command to catch clauses described in ARGS. */ | |
5631 | } | |
5632 | ||
5633 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
5634 | static void | |
5635 | enable_catch (args) | |
5636 | char *args; | |
5637 | { | |
5638 | /* Map the disable command to catch clauses described in ARGS. */ | |
5639 | } | |
5640 | ||
5641 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
5642 | static void | |
5643 | delete_catch (args) | |
5644 | char *args; | |
5645 | { | |
5646 | /* Map the delete command to catch clauses described in ARGS. */ | |
5647 | } | |
5648 | #endif /* 0 */ | |
5649 | ||
5650 | static void | |
5651 | catch_command (arg, from_tty) | |
5652 | char *arg; | |
5653 | int from_tty; | |
5654 | { | |
5655 | catch_command_1 (arg, 0, from_tty); | |
5656 | } | |
5657 | \f | |
5658 | ||
5659 | static void | |
5660 | tcatch_command (arg, from_tty) | |
5661 | char *arg; | |
5662 | int from_tty; | |
5663 | { | |
5664 | catch_command_1 (arg, 1, from_tty); | |
5665 | } | |
5666 | ||
5667 | ||
5668 | static void | |
5669 | clear_command (arg, from_tty) | |
5670 | char *arg; | |
5671 | int from_tty; | |
5672 | { | |
5673 | register struct breakpoint *b, *b1; | |
5674 | int default_match; | |
5675 | struct symtabs_and_lines sals; | |
5676 | struct symtab_and_line sal; | |
5677 | register struct breakpoint *found; | |
5678 | int i; | |
5679 | ||
5680 | if (arg) | |
5681 | { | |
5682 | sals = decode_line_spec (arg, 1); | |
5683 | default_match = 0; | |
5684 | } | |
5685 | else | |
5686 | { | |
c5aa993b | 5687 | sals.sals = (struct symtab_and_line *) |
c906108c | 5688 | xmalloc (sizeof (struct symtab_and_line)); |
c5aa993b | 5689 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
5690 | sal.line = default_breakpoint_line; |
5691 | sal.symtab = default_breakpoint_symtab; | |
5692 | sal.pc = default_breakpoint_address; | |
5693 | if (sal.symtab == 0) | |
5694 | error ("No source file specified."); | |
5695 | ||
5696 | sals.sals[0] = sal; | |
5697 | sals.nelts = 1; | |
5698 | ||
5699 | default_match = 1; | |
5700 | } | |
5701 | ||
5702 | /* For each line spec given, delete bps which correspond | |
5703 | to it. We do this in two loops: the first loop looks at | |
5704 | the initial bp(s) in the chain which should be deleted, | |
5705 | the second goes down the rest of the chain looking ahead | |
5706 | one so it can take those bps off the chain without messing | |
5707 | up the chain. */ | |
5708 | ||
5709 | ||
5710 | for (i = 0; i < sals.nelts; i++) | |
5711 | { | |
5712 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
5713 | If line given (pc == 0), clear all bpts on specified line. |
5714 | If defaulting, clear all bpts on default line | |
c906108c | 5715 | or at default pc. |
c5aa993b JM |
5716 | |
5717 | defaulting sal.pc != 0 tests to do | |
5718 | ||
5719 | 0 1 pc | |
5720 | 1 1 pc _and_ line | |
5721 | 0 0 line | |
5722 | 1 0 <can't happen> */ | |
c906108c SS |
5723 | |
5724 | sal = sals.sals[i]; | |
5725 | found = (struct breakpoint *) 0; | |
5726 | ||
5727 | ||
5728 | while (breakpoint_chain | |
c5aa993b JM |
5729 | /* Why don't we check here that this is not |
5730 | a watchpoint, etc., as we do below? | |
5731 | I can't make it fail, but don't know | |
5732 | what's stopping the failure: a watchpoint | |
5733 | of the same address as "sal.pc" should | |
5734 | wind up being deleted. */ | |
5735 | ||
5736 | && (((sal.pc && (breakpoint_chain->address == sal.pc)) && | |
5737 | (overlay_debugging == 0 || | |
5738 | breakpoint_chain->section == sal.section)) | |
5739 | || ((default_match || (0 == sal.pc)) | |
5740 | && breakpoint_chain->source_file != NULL | |
5741 | && sal.symtab != NULL | |
5742 | && STREQ (breakpoint_chain->source_file, sal.symtab->filename) | |
5743 | && breakpoint_chain->line_number == sal.line))) | |
c906108c SS |
5744 | |
5745 | { | |
5746 | b1 = breakpoint_chain; | |
5747 | breakpoint_chain = b1->next; | |
5748 | b1->next = found; | |
5749 | found = b1; | |
5750 | } | |
5751 | ||
5752 | ALL_BREAKPOINTS (b) | |
5753 | ||
c5aa993b JM |
5754 | while (b->next |
5755 | && b->next->type != bp_none | |
5756 | && b->next->type != bp_watchpoint | |
5757 | && b->next->type != bp_hardware_watchpoint | |
5758 | && b->next->type != bp_read_watchpoint | |
5759 | && b->next->type != bp_access_watchpoint | |
5760 | && (((sal.pc && (b->next->address == sal.pc)) && | |
5761 | (overlay_debugging == 0 || | |
5762 | b->next->section == sal.section)) | |
5763 | || ((default_match || (0 == sal.pc)) | |
5764 | && b->next->source_file != NULL | |
5765 | && sal.symtab != NULL | |
5766 | && STREQ (b->next->source_file, sal.symtab->filename) | |
5767 | && b->next->line_number == sal.line))) | |
c906108c SS |
5768 | |
5769 | ||
c5aa993b JM |
5770 | { |
5771 | b1 = b->next; | |
5772 | b->next = b1->next; | |
5773 | b1->next = found; | |
5774 | found = b1; | |
5775 | } | |
c906108c SS |
5776 | |
5777 | if (found == 0) | |
5778 | { | |
5779 | if (arg) | |
5780 | error ("No breakpoint at %s.", arg); | |
5781 | else | |
5782 | error ("No breakpoint at this line."); | |
5783 | } | |
5784 | ||
c5aa993b JM |
5785 | if (found->next) |
5786 | from_tty = 1; /* Always report if deleted more than one */ | |
5787 | if (from_tty) | |
5788 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
c906108c SS |
5789 | breakpoints_changed (); |
5790 | while (found) | |
5791 | { | |
c5aa993b JM |
5792 | if (from_tty) |
5793 | printf_unfiltered ("%d ", found->number); | |
c906108c SS |
5794 | b1 = found->next; |
5795 | delete_breakpoint (found); | |
5796 | found = b1; | |
5797 | } | |
c5aa993b JM |
5798 | if (from_tty) |
5799 | putchar_unfiltered ('\n'); | |
c906108c | 5800 | } |
c5aa993b | 5801 | free ((PTR) sals.sals); |
c906108c SS |
5802 | } |
5803 | \f | |
5804 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
5805 | all breakpoints that are marked for deletion, whether hit or not. | |
5806 | This is called after any breakpoint is hit, or after errors. */ | |
5807 | ||
5808 | void | |
5809 | breakpoint_auto_delete (bs) | |
5810 | bpstat bs; | |
5811 | { | |
5812 | struct breakpoint *b, *temp; | |
5813 | ||
5814 | for (; bs; bs = bs->next) | |
c5aa993b | 5815 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
c906108c SS |
5816 | && bs->stop) |
5817 | delete_breakpoint (bs->breakpoint_at); | |
5818 | ||
5819 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
5820 | { |
5821 | if (b->disposition == del_at_next_stop) | |
5822 | delete_breakpoint (b); | |
5823 | } | |
c906108c SS |
5824 | } |
5825 | ||
53a5351d JM |
5826 | /* Delete a breakpoint and clean up all traces of it in the data |
5827 | structures. */ | |
c906108c SS |
5828 | |
5829 | void | |
5830 | delete_breakpoint (bpt) | |
5831 | struct breakpoint *bpt; | |
5832 | { | |
5833 | register struct breakpoint *b; | |
5834 | register bpstat bs; | |
5835 | ||
5836 | if (bpt == NULL) | |
5837 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
5838 | ||
5839 | ||
5840 | /* Has this bp already been deleted? This can happen because multiple | |
5841 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
5842 | ||
5843 | One example of this happening is a watchpoint's scope bp. When the | |
5844 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
5845 | delete it. We also delete its scope bp. But the scope bp is marked | |
5846 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
5847 | checked for auto-deleting bp's, which are deleted. | |
5848 | ||
5849 | A real solution to this problem might involve reference counts in bp's, | |
5850 | and/or giving them pointers back to their referencing bpstat's, and | |
5851 | teaching delete_breakpoint to only free a bp's storage when no more | |
5852 | references were extent. A cheaper bandaid was chosen. */ | |
5853 | if (bpt->type == bp_none) | |
5854 | return; | |
5855 | ||
5856 | if (delete_breakpoint_hook) | |
5857 | delete_breakpoint_hook (bpt); | |
104c1213 | 5858 | breakpoint_delete_event (bpt->number); |
c906108c SS |
5859 | |
5860 | if (bpt->inserted) | |
5861 | remove_breakpoint (bpt, mark_uninserted); | |
c5aa993b | 5862 | |
c906108c SS |
5863 | if (breakpoint_chain == bpt) |
5864 | breakpoint_chain = bpt->next; | |
5865 | ||
5866 | /* If we have callback-style exception catchpoints, don't go through | |
5867 | the adjustments to the C++ runtime library etc. if the inferior | |
5868 | isn't actually running. target_enable_exception_callback for a | |
5869 | null target ops vector gives an undesirable error message, so we | |
5870 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 5871 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
5872 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
5873 | { | |
5874 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
5875 | static char message[sizeof (message1) + 30]; | |
5876 | args_for_catchpoint_enable args; | |
5877 | ||
53a5351d JM |
5878 | /* Format possible error msg */ |
5879 | sprintf (message, message1, bpt->number); | |
5880 | args.kind = bpt->type == bp_catch_catch ? | |
5881 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
5882 | args.enable = 0; |
5883 | catch_errors (cover_target_enable_exception_callback, &args, | |
5884 | message, RETURN_MASK_ALL); | |
5885 | } | |
5886 | ||
5887 | ||
5888 | ALL_BREAKPOINTS (b) | |
5889 | if (b->next == bpt) | |
c5aa993b JM |
5890 | { |
5891 | b->next = bpt->next; | |
5892 | break; | |
5893 | } | |
c906108c SS |
5894 | |
5895 | /* Before turning off the visuals for the bp, check to see that | |
5896 | there are no other bps at the same address. */ | |
5897 | if (tui_version) | |
5898 | { | |
5899 | int clearIt; | |
5900 | ||
5901 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5902 | { |
5903 | clearIt = (b->address != bpt->address); | |
5904 | if (!clearIt) | |
5905 | break; | |
5906 | } | |
c906108c SS |
5907 | |
5908 | if (clearIt) | |
c5aa993b JM |
5909 | { |
5910 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, bpt, 0)); | |
5911 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
5912 | } | |
c906108c SS |
5913 | } |
5914 | ||
5915 | check_duplicates (bpt->address, bpt->section); | |
5916 | /* If this breakpoint was inserted, and there is another breakpoint | |
5917 | at the same address, we need to insert the other breakpoint. */ | |
5918 | if (bpt->inserted | |
5919 | && bpt->type != bp_hardware_watchpoint | |
5920 | && bpt->type != bp_read_watchpoint | |
5921 | && bpt->type != bp_access_watchpoint | |
5922 | && bpt->type != bp_catch_fork | |
5923 | && bpt->type != bp_catch_vfork | |
5924 | && bpt->type != bp_catch_exec) | |
5925 | { | |
5926 | ALL_BREAKPOINTS (b) | |
5927 | if (b->address == bpt->address | |
5928 | && b->section == bpt->section | |
5929 | && !b->duplicate | |
5930 | && b->enable != disabled | |
5931 | && b->enable != shlib_disabled | |
5932 | && b->enable != call_disabled) | |
c5aa993b JM |
5933 | { |
5934 | int val; | |
53a5351d JM |
5935 | |
5936 | if (b->type == bp_hardware_breakpoint) | |
5937 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
5938 | else | |
5939 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
5940 | ||
c5aa993b JM |
5941 | if (val != 0) |
5942 | { | |
5943 | target_terminal_ours_for_output (); | |
53a5351d | 5944 | warning ("Cannot insert breakpoint %d:", b->number); |
c5aa993b JM |
5945 | memory_error (val, b->address); /* which bombs us out */ |
5946 | } | |
5947 | else | |
5948 | b->inserted = 1; | |
5949 | } | |
c906108c SS |
5950 | } |
5951 | ||
5952 | free_command_lines (&bpt->commands); | |
5953 | if (bpt->cond) | |
5954 | free (bpt->cond); | |
5955 | if (bpt->cond_string != NULL) | |
5956 | free (bpt->cond_string); | |
5957 | if (bpt->addr_string != NULL) | |
5958 | free (bpt->addr_string); | |
5959 | if (bpt->exp != NULL) | |
5960 | free (bpt->exp); | |
5961 | if (bpt->exp_string != NULL) | |
5962 | free (bpt->exp_string); | |
5963 | if (bpt->val != NULL) | |
5964 | value_free (bpt->val); | |
5965 | if (bpt->source_file != NULL) | |
5966 | free (bpt->source_file); | |
5967 | if (bpt->dll_pathname != NULL) | |
5968 | free (bpt->dll_pathname); | |
5969 | if (bpt->triggered_dll_pathname != NULL) | |
5970 | free (bpt->triggered_dll_pathname); | |
5971 | if (bpt->exec_pathname != NULL) | |
5972 | free (bpt->exec_pathname); | |
5973 | ||
5974 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
5975 | /* FIXME, how can we find all bpstat's? | |
5976 | We just check stop_bpstat for now. */ | |
5977 | for (bs = stop_bpstat; bs; bs = bs->next) | |
5978 | if (bs->breakpoint_at == bpt) | |
5979 | { | |
5980 | bs->breakpoint_at = NULL; | |
5981 | ||
5982 | /* we'd call bpstat_clear_actions, but that free's stuff and due | |
5983 | to the multiple pointers pointing to one item with no | |
5984 | reference counts found anywhere through out the bpstat's (how | |
5985 | do you spell fragile?), we don't want to free things twice -- | |
5986 | better a memory leak than a corrupt malloc pool! */ | |
5987 | bs->commands = NULL; | |
5988 | bs->old_val = NULL; | |
5989 | } | |
5990 | /* On the chance that someone will soon try again to delete this same | |
5991 | bp, we mark it as deleted before freeing its storage. */ | |
5992 | bpt->type = bp_none; | |
5993 | ||
c5aa993b | 5994 | free ((PTR) bpt); |
c906108c SS |
5995 | } |
5996 | ||
5997 | void | |
5998 | delete_command (arg, from_tty) | |
5999 | char *arg; | |
6000 | int from_tty; | |
6001 | { | |
6002 | struct breakpoint *b, *temp; | |
6003 | ||
6004 | if (arg == 0) | |
6005 | { | |
6006 | int breaks_to_delete = 0; | |
6007 | ||
6008 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6009 | Do not delete internal or call-dummy breakpoints, these |
6010 | have to be deleted with an explicit breakpoint number argument. */ | |
6011 | ALL_BREAKPOINTS (b) | |
6012 | { | |
6013 | if (b->type != bp_call_dummy && | |
6014 | b->type != bp_shlib_event && | |
6015 | b->number >= 0) | |
6016 | breaks_to_delete = 1; | |
6017 | } | |
c906108c SS |
6018 | |
6019 | /* Ask user only if there are some breakpoints to delete. */ | |
6020 | if (!from_tty | |
6021 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6022 | { | |
c5aa993b JM |
6023 | ALL_BREAKPOINTS_SAFE (b, temp) |
6024 | { | |
6025 | if (b->type != bp_call_dummy && | |
6026 | b->type != bp_shlib_event && | |
6027 | b->number >= 0) | |
6028 | delete_breakpoint (b); | |
6029 | } | |
c906108c SS |
6030 | } |
6031 | } | |
6032 | else | |
6033 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6034 | } | |
6035 | ||
6036 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6037 | The value we return ends up being the return value from catch_errors. | |
6038 | Unused in this case. */ | |
6039 | ||
6040 | static int | |
6041 | breakpoint_re_set_one (bint) | |
6042 | PTR bint; | |
6043 | { | |
53a5351d JM |
6044 | /* get past catch_errs */ |
6045 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6046 | struct value *mark; |
6047 | int i; | |
6048 | struct symtabs_and_lines sals; | |
6049 | char *s; | |
6050 | enum enable save_enable; | |
6051 | ||
6052 | switch (b->type) | |
6053 | { | |
6054 | case bp_none: | |
53a5351d JM |
6055 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6056 | b->number); | |
c906108c SS |
6057 | return 0; |
6058 | case bp_breakpoint: | |
6059 | case bp_hardware_breakpoint: | |
6060 | case bp_catch_load: | |
6061 | case bp_catch_unload: | |
6062 | if (b->addr_string == NULL) | |
6063 | { | |
6064 | /* Anything without a string can't be re-set. */ | |
6065 | delete_breakpoint (b); | |
6066 | return 0; | |
6067 | } | |
6068 | /* In case we have a problem, disable this breakpoint. We'll restore | |
c5aa993b | 6069 | its status if we succeed. */ |
c906108c SS |
6070 | save_enable = b->enable; |
6071 | b->enable = disabled; | |
6072 | ||
6073 | set_language (b->language); | |
6074 | input_radix = b->input_radix; | |
6075 | s = b->addr_string; | |
c5aa993b | 6076 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6077 | for (i = 0; i < sals.nelts; i++) |
6078 | { | |
6079 | resolve_sal_pc (&sals.sals[i]); | |
6080 | ||
6081 | /* Reparse conditions, they might contain references to the | |
6082 | old symtab. */ | |
6083 | if (b->cond_string != NULL) | |
6084 | { | |
6085 | s = b->cond_string; | |
6086 | if (b->cond) | |
c5aa993b | 6087 | free ((PTR) b->cond); |
c906108c SS |
6088 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
6089 | } | |
6090 | ||
c5aa993b | 6091 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 6092 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
6093 | /* ...or new and old breakpoints both have source files, and |
6094 | the source file name or the line number changes... */ | |
c906108c SS |
6095 | || (b->source_file != NULL |
6096 | && sals.sals[i].symtab != NULL | |
6097 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
6098 | || b->line_number != sals.sals[i].line) | |
c906108c | 6099 | ) |
c5aa993b JM |
6100 | /* ...or we switch between having a source file and not having |
6101 | one. */ | |
6102 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
6103 | ) | |
c906108c SS |
6104 | { |
6105 | if (b->source_file != NULL) | |
6106 | free (b->source_file); | |
6107 | if (sals.sals[i].symtab == NULL) | |
6108 | b->source_file = NULL; | |
6109 | else | |
6110 | b->source_file = | |
6111 | savestring (sals.sals[i].symtab->filename, | |
6112 | strlen (sals.sals[i].symtab->filename)); | |
6113 | b->line_number = sals.sals[i].line; | |
6114 | b->address = sals.sals[i].pc; | |
6115 | ||
c5aa993b JM |
6116 | /* Used to check for duplicates here, but that can |
6117 | cause trouble, as it doesn't check for disable | |
6118 | breakpoints. */ | |
c906108c SS |
6119 | |
6120 | mention (b); | |
6121 | ||
6122 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 6123 | rather than once for every breakpoint. */ |
c906108c SS |
6124 | breakpoints_changed (); |
6125 | } | |
6126 | b->section = sals.sals[i].section; | |
6127 | b->enable = save_enable; /* Restore it, this worked. */ | |
6128 | ||
6129 | ||
c5aa993b | 6130 | /* Now that this is re-enabled, check_duplicates |
c906108c | 6131 | can be used. */ |
c5aa993b | 6132 | check_duplicates (b->address, b->section); |
c906108c SS |
6133 | |
6134 | } | |
c5aa993b | 6135 | free ((PTR) sals.sals); |
c906108c SS |
6136 | break; |
6137 | ||
6138 | case bp_watchpoint: | |
6139 | case bp_hardware_watchpoint: | |
6140 | case bp_read_watchpoint: | |
6141 | case bp_access_watchpoint: | |
6142 | innermost_block = NULL; | |
53a5351d JM |
6143 | /* The issue arises of what context to evaluate this in. The |
6144 | same one as when it was set, but what does that mean when | |
6145 | symbols have been re-read? We could save the filename and | |
6146 | functionname, but if the context is more local than that, the | |
6147 | best we could do would be something like how many levels deep | |
6148 | and which index at that particular level, but that's going to | |
6149 | be less stable than filenames or function names. */ | |
6150 | ||
c906108c SS |
6151 | /* So for now, just use a global context. */ |
6152 | if (b->exp) | |
c5aa993b | 6153 | free ((PTR) b->exp); |
c906108c SS |
6154 | b->exp = parse_expression (b->exp_string); |
6155 | b->exp_valid_block = innermost_block; | |
6156 | mark = value_mark (); | |
6157 | if (b->val) | |
6158 | value_free (b->val); | |
6159 | b->val = evaluate_expression (b->exp); | |
6160 | release_value (b->val); | |
6161 | if (VALUE_LAZY (b->val)) | |
6162 | value_fetch_lazy (b->val); | |
6163 | ||
6164 | if (b->cond_string != NULL) | |
6165 | { | |
6166 | s = b->cond_string; | |
6167 | if (b->cond) | |
c5aa993b JM |
6168 | free ((PTR) b->cond); |
6169 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); | |
c906108c SS |
6170 | } |
6171 | if (b->enable == enabled) | |
6172 | mention (b); | |
6173 | value_free_to_mark (mark); | |
6174 | break; | |
c5aa993b JM |
6175 | case bp_catch_catch: |
6176 | case bp_catch_throw: | |
c906108c | 6177 | break; |
c5aa993b JM |
6178 | /* We needn't really do anything to reset these, since the mask |
6179 | that requests them is unaffected by e.g., new libraries being | |
6180 | loaded. */ | |
c906108c SS |
6181 | case bp_catch_fork: |
6182 | case bp_catch_vfork: | |
6183 | case bp_catch_exec: | |
6184 | break; | |
c5aa993b | 6185 | |
c906108c SS |
6186 | default: |
6187 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
6188 | /* fall through */ | |
c5aa993b JM |
6189 | /* Delete longjmp breakpoints, they will be reset later by |
6190 | breakpoint_re_set. */ | |
c906108c SS |
6191 | case bp_longjmp: |
6192 | case bp_longjmp_resume: | |
6193 | delete_breakpoint (b); | |
6194 | break; | |
6195 | ||
c5aa993b JM |
6196 | /* This breakpoint is special, it's set up when the inferior |
6197 | starts and we really don't want to touch it. */ | |
c906108c SS |
6198 | case bp_shlib_event: |
6199 | ||
c5aa993b JM |
6200 | /* Keep temporary breakpoints, which can be encountered when we step |
6201 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
6202 | Otherwise these should have been blown away via the cleanup chain | |
6203 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
6204 | case bp_until: |
6205 | case bp_finish: | |
6206 | case bp_watchpoint_scope: | |
6207 | case bp_call_dummy: | |
6208 | case bp_step_resume: | |
6209 | break; | |
6210 | } | |
6211 | ||
6212 | return 0; | |
6213 | } | |
6214 | ||
6215 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
6216 | void | |
6217 | breakpoint_re_set () | |
6218 | { | |
6219 | struct breakpoint *b, *temp; | |
6220 | enum language save_language; | |
6221 | int save_input_radix; | |
6222 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
6223 | char message[sizeof (message1) + 30 /* slop */ ]; |
6224 | ||
c906108c SS |
6225 | save_language = current_language->la_language; |
6226 | save_input_radix = input_radix; | |
6227 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6228 | { |
53a5351d JM |
6229 | /* Format possible error msg */ |
6230 | sprintf (message, message1, b->number); | |
c5aa993b JM |
6231 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
6232 | } | |
c906108c SS |
6233 | set_language (save_language); |
6234 | input_radix = save_input_radix; | |
6235 | ||
6236 | #ifdef GET_LONGJMP_TARGET | |
6237 | create_longjmp_breakpoint ("longjmp"); | |
6238 | create_longjmp_breakpoint ("_longjmp"); | |
6239 | create_longjmp_breakpoint ("siglongjmp"); | |
6240 | create_longjmp_breakpoint ("_siglongjmp"); | |
6241 | create_longjmp_breakpoint (NULL); | |
6242 | #endif | |
6243 | ||
6244 | #if 0 | |
6245 | /* Took this out (temporarily at least), since it produces an extra | |
6246 | blank line at startup. This messes up the gdbtests. -PB */ | |
6247 | /* Blank line to finish off all those mention() messages we just printed. */ | |
6248 | printf_filtered ("\n"); | |
6249 | #endif | |
6250 | } | |
6251 | \f | |
6252 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
6253 | If from_tty is nonzero, it prints a message to that effect, | |
6254 | which ends with a period (no newline). */ | |
6255 | ||
6256 | /* Reset the thread number of this breakpoint: | |
6257 | ||
6258 | - If the breakpoint is for all threads, leave it as-is. | |
6259 | - Else, reset it to the current thread for inferior_pid. */ | |
6260 | void | |
6261 | breakpoint_re_set_thread (b) | |
c5aa993b | 6262 | struct breakpoint *b; |
c906108c SS |
6263 | { |
6264 | if (b->thread != -1) | |
6265 | { | |
6266 | if (in_thread_list (inferior_pid)) | |
c5aa993b | 6267 | b->thread = pid_to_thread_id (inferior_pid); |
c906108c SS |
6268 | } |
6269 | } | |
6270 | ||
6271 | void | |
6272 | set_ignore_count (bptnum, count, from_tty) | |
6273 | int bptnum, count, from_tty; | |
6274 | { | |
6275 | register struct breakpoint *b; | |
6276 | ||
6277 | if (count < 0) | |
6278 | count = 0; | |
6279 | ||
6280 | ALL_BREAKPOINTS (b) | |
6281 | if (b->number == bptnum) | |
c5aa993b JM |
6282 | { |
6283 | b->ignore_count = count; | |
6284 | if (!from_tty) | |
c906108c | 6285 | return; |
c5aa993b JM |
6286 | else if (count == 0) |
6287 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
6288 | bptnum); | |
6289 | else if (count == 1) | |
6290 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
6291 | bptnum); | |
6292 | else | |
6293 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
6294 | count, bptnum); | |
6295 | breakpoints_changed (); | |
6296 | return; | |
6297 | } | |
c906108c SS |
6298 | |
6299 | error ("No breakpoint number %d.", bptnum); | |
6300 | } | |
6301 | ||
6302 | /* Clear the ignore counts of all breakpoints. */ | |
6303 | void | |
6304 | breakpoint_clear_ignore_counts () | |
6305 | { | |
6306 | struct breakpoint *b; | |
6307 | ||
6308 | ALL_BREAKPOINTS (b) | |
6309 | b->ignore_count = 0; | |
6310 | } | |
6311 | ||
6312 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
6313 | ||
6314 | static void | |
6315 | ignore_command (args, from_tty) | |
6316 | char *args; | |
6317 | int from_tty; | |
6318 | { | |
6319 | char *p = args; | |
6320 | register int num; | |
6321 | ||
6322 | if (p == 0) | |
6323 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 6324 | |
c906108c SS |
6325 | num = get_number (&p); |
6326 | ||
6327 | if (*p == 0) | |
6328 | error ("Second argument (specified ignore-count) is missing."); | |
6329 | ||
6330 | set_ignore_count (num, | |
6331 | longest_to_int (value_as_long (parse_and_eval (p))), | |
6332 | from_tty); | |
6333 | printf_filtered ("\n"); | |
6334 | breakpoints_changed (); | |
6335 | } | |
6336 | \f | |
6337 | /* Call FUNCTION on each of the breakpoints | |
6338 | whose numbers are given in ARGS. */ | |
6339 | ||
6340 | static void | |
6341 | map_breakpoint_numbers (args, function) | |
6342 | char *args; | |
6343 | void (*function) PARAMS ((struct breakpoint *)); | |
6344 | { | |
6345 | register char *p = args; | |
6346 | char *p1; | |
6347 | register int num; | |
6348 | register struct breakpoint *b; | |
6349 | ||
6350 | if (p == 0) | |
6351 | error_no_arg ("one or more breakpoint numbers"); | |
6352 | ||
6353 | while (*p) | |
6354 | { | |
6355 | p1 = p; | |
c5aa993b | 6356 | |
c906108c SS |
6357 | num = get_number (&p1); |
6358 | ||
6359 | ALL_BREAKPOINTS (b) | |
6360 | if (b->number == num) | |
c5aa993b JM |
6361 | { |
6362 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
6363 | function (b); | |
6364 | if (related_breakpoint) | |
6365 | function (related_breakpoint); | |
6366 | goto win; | |
6367 | } | |
c906108c SS |
6368 | printf_unfiltered ("No breakpoint number %d.\n", num); |
6369 | win: | |
6370 | p = p1; | |
6371 | } | |
6372 | } | |
6373 | ||
6374 | void | |
6375 | disable_breakpoint (bpt) | |
6376 | struct breakpoint *bpt; | |
6377 | { | |
6378 | /* Never disable a watchpoint scope breakpoint; we want to | |
6379 | hit them when we leave scope so we can delete both the | |
6380 | watchpoint and its scope breakpoint at that time. */ | |
6381 | if (bpt->type == bp_watchpoint_scope) | |
6382 | return; | |
6383 | ||
6384 | bpt->enable = disabled; | |
6385 | ||
6386 | check_duplicates (bpt->address, bpt->section); | |
6387 | ||
6388 | if (modify_breakpoint_hook) | |
6389 | modify_breakpoint_hook (bpt); | |
104c1213 | 6390 | breakpoint_modify_event (bpt->number); |
c906108c SS |
6391 | } |
6392 | ||
6393 | /* ARGSUSED */ | |
6394 | static void | |
6395 | disable_command (args, from_tty) | |
6396 | char *args; | |
6397 | int from_tty; | |
6398 | { | |
6399 | register struct breakpoint *bpt; | |
6400 | if (args == 0) | |
6401 | ALL_BREAKPOINTS (bpt) | |
6402 | switch (bpt->type) | |
c5aa993b JM |
6403 | { |
6404 | case bp_none: | |
53a5351d JM |
6405 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
6406 | bpt->number); | |
c5aa993b JM |
6407 | continue; |
6408 | case bp_breakpoint: | |
6409 | case bp_catch_load: | |
6410 | case bp_catch_unload: | |
6411 | case bp_catch_fork: | |
6412 | case bp_catch_vfork: | |
6413 | case bp_catch_exec: | |
6414 | case bp_catch_catch: | |
6415 | case bp_catch_throw: | |
6416 | case bp_hardware_breakpoint: | |
6417 | case bp_watchpoint: | |
6418 | case bp_hardware_watchpoint: | |
6419 | case bp_read_watchpoint: | |
6420 | case bp_access_watchpoint: | |
6421 | disable_breakpoint (bpt); | |
6422 | default: | |
6423 | continue; | |
6424 | } | |
c906108c SS |
6425 | else |
6426 | map_breakpoint_numbers (args, disable_breakpoint); | |
6427 | } | |
6428 | ||
6429 | static void | |
6430 | do_enable_breakpoint (bpt, disposition) | |
6431 | struct breakpoint *bpt; | |
6432 | enum bpdisp disposition; | |
6433 | { | |
6434 | struct frame_info *save_selected_frame = NULL; | |
6435 | int save_selected_frame_level = -1; | |
6436 | int target_resources_ok, other_type_used; | |
6437 | struct value *mark; | |
6438 | ||
6439 | if (bpt->type == bp_hardware_breakpoint) | |
6440 | { | |
6441 | int i; | |
c5aa993b | 6442 | i = hw_breakpoint_used_count (); |
53a5351d JM |
6443 | target_resources_ok = |
6444 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
6445 | i + 1, 0); | |
c906108c | 6446 | if (target_resources_ok == 0) |
c5aa993b | 6447 | error ("No hardware breakpoint support in the target."); |
c906108c | 6448 | else if (target_resources_ok < 0) |
c5aa993b | 6449 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
6450 | } |
6451 | ||
6452 | bpt->enable = enabled; | |
6453 | bpt->disposition = disposition; | |
6454 | check_duplicates (bpt->address, bpt->section); | |
6455 | breakpoints_changed (); | |
6456 | ||
53a5351d JM |
6457 | if (bpt->type == bp_watchpoint || |
6458 | bpt->type == bp_hardware_watchpoint || | |
6459 | bpt->type == bp_read_watchpoint || | |
6460 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
6461 | { |
6462 | if (bpt->exp_valid_block != NULL) | |
6463 | { | |
6464 | struct frame_info *fr = | |
6465 | ||
c5aa993b JM |
6466 | /* Ensure that we have the current frame. Else, this |
6467 | next query may pessimistically be answered as, "No, | |
6468 | not within current scope". */ | |
6469 | get_current_frame (); | |
6470 | fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
c906108c SS |
6471 | if (fr == NULL) |
6472 | { | |
6473 | printf_filtered ("\ | |
6474 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
6475 | is valid is not currently in scope.\n", bpt->number); | |
6476 | bpt->enable = disabled; | |
6477 | return; | |
6478 | } | |
6479 | ||
6480 | save_selected_frame = selected_frame; | |
6481 | save_selected_frame_level = selected_frame_level; | |
6482 | select_frame (fr, -1); | |
6483 | } | |
6484 | ||
6485 | value_free (bpt->val); | |
6486 | mark = value_mark (); | |
6487 | bpt->val = evaluate_expression (bpt->exp); | |
6488 | release_value (bpt->val); | |
6489 | if (VALUE_LAZY (bpt->val)) | |
6490 | value_fetch_lazy (bpt->val); | |
6491 | ||
6492 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
6493 | bpt->type == bp_read_watchpoint || |
6494 | bpt->type == bp_access_watchpoint) | |
6495 | { | |
6496 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
6497 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
6498 | ||
6499 | /* Hack around 'unused var' error for some targets here */ | |
6500 | (void) mem_cnt, i; | |
6501 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
6502 | bpt->type, i + mem_cnt, other_type_used); | |
6503 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
6504 | bp_watchpoint in the following condition */ | |
6505 | if (target_resources_ok < 0) | |
6506 | { | |
6507 | printf_filtered ("\ | |
c906108c SS |
6508 | Cannot enable watchpoint %d because target watch resources\n\ |
6509 | have been allocated for other watchpoints.\n", bpt->number); | |
c5aa993b JM |
6510 | bpt->enable = disabled; |
6511 | value_free_to_mark (mark); | |
6512 | return; | |
6513 | } | |
6514 | } | |
c906108c SS |
6515 | |
6516 | if (save_selected_frame_level >= 0) | |
53a5351d JM |
6517 | select_and_print_frame (save_selected_frame, |
6518 | save_selected_frame_level); | |
c906108c SS |
6519 | value_free_to_mark (mark); |
6520 | } | |
6521 | if (modify_breakpoint_hook) | |
6522 | modify_breakpoint_hook (bpt); | |
104c1213 | 6523 | breakpoint_modify_event (bpt->number); |
c906108c SS |
6524 | } |
6525 | ||
6526 | void | |
6527 | enable_breakpoint (bpt) | |
6528 | struct breakpoint *bpt; | |
6529 | { | |
6530 | do_enable_breakpoint (bpt, bpt->disposition); | |
6531 | } | |
6532 | ||
6533 | /* The enable command enables the specified breakpoints (or all defined | |
6534 | breakpoints) so they once again become (or continue to be) effective | |
6535 | in stopping the inferior. */ | |
6536 | ||
6537 | /* ARGSUSED */ | |
6538 | static void | |
6539 | enable_command (args, from_tty) | |
6540 | char *args; | |
6541 | int from_tty; | |
6542 | { | |
6543 | register struct breakpoint *bpt; | |
6544 | if (args == 0) | |
6545 | ALL_BREAKPOINTS (bpt) | |
6546 | switch (bpt->type) | |
c5aa993b JM |
6547 | { |
6548 | case bp_none: | |
53a5351d JM |
6549 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
6550 | bpt->number); | |
c5aa993b JM |
6551 | continue; |
6552 | case bp_breakpoint: | |
6553 | case bp_catch_load: | |
6554 | case bp_catch_unload: | |
6555 | case bp_catch_fork: | |
6556 | case bp_catch_vfork: | |
6557 | case bp_catch_exec: | |
6558 | case bp_catch_catch: | |
6559 | case bp_catch_throw: | |
6560 | case bp_hardware_breakpoint: | |
6561 | case bp_watchpoint: | |
6562 | case bp_hardware_watchpoint: | |
6563 | case bp_read_watchpoint: | |
6564 | case bp_access_watchpoint: | |
6565 | enable_breakpoint (bpt); | |
6566 | default: | |
6567 | continue; | |
6568 | } | |
c906108c SS |
6569 | else |
6570 | map_breakpoint_numbers (args, enable_breakpoint); | |
6571 | } | |
6572 | ||
6573 | static void | |
6574 | enable_once_breakpoint (bpt) | |
6575 | struct breakpoint *bpt; | |
6576 | { | |
6577 | do_enable_breakpoint (bpt, disable); | |
6578 | } | |
6579 | ||
6580 | /* ARGSUSED */ | |
6581 | static void | |
6582 | enable_once_command (args, from_tty) | |
6583 | char *args; | |
6584 | int from_tty; | |
6585 | { | |
6586 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
6587 | } | |
6588 | ||
6589 | static void | |
6590 | enable_delete_breakpoint (bpt) | |
6591 | struct breakpoint *bpt; | |
6592 | { | |
6593 | do_enable_breakpoint (bpt, del); | |
6594 | } | |
6595 | ||
6596 | /* ARGSUSED */ | |
6597 | static void | |
6598 | enable_delete_command (args, from_tty) | |
6599 | char *args; | |
6600 | int from_tty; | |
6601 | { | |
6602 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
6603 | } | |
6604 | \f | |
6605 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
6606 | ||
6607 | struct symtabs_and_lines | |
6608 | decode_line_spec_1 (string, funfirstline) | |
6609 | char *string; | |
6610 | int funfirstline; | |
6611 | { | |
6612 | struct symtabs_and_lines sals; | |
6613 | if (string == 0) | |
6614 | error ("Empty line specification."); | |
6615 | if (default_breakpoint_valid) | |
6616 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
6617 | default_breakpoint_symtab, |
6618 | default_breakpoint_line, | |
c5aa993b | 6619 | (char ***) NULL); |
c906108c SS |
6620 | else |
6621 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 6622 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6623 | if (*string) |
6624 | error ("Junk at end of line specification: %s", string); | |
6625 | return sals; | |
6626 | } | |
6627 | \f | |
6628 | void | |
6629 | _initialize_breakpoint () | |
6630 | { | |
6631 | struct cmd_list_element *c; | |
6632 | ||
6633 | breakpoint_chain = 0; | |
6634 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
6635 | before a breakpoint is set. */ | |
6636 | breakpoint_count = 0; | |
6637 | ||
6638 | add_com ("ignore", class_breakpoint, ignore_command, | |
6639 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
6640 | Usage is `ignore N COUNT'."); | |
6641 | if (xdb_commands) | |
c5aa993b | 6642 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
6643 | |
6644 | add_com ("commands", class_breakpoint, commands_command, | |
6645 | "Set commands to be executed when a breakpoint is hit.\n\ | |
6646 | Give breakpoint number as argument after \"commands\".\n\ | |
6647 | With no argument, the targeted breakpoint is the last one set.\n\ | |
6648 | The commands themselves follow starting on the next line.\n\ | |
6649 | Type a line containing \"end\" to indicate the end of them.\n\ | |
6650 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
6651 | then no output is printed when it is hit, except what the commands print."); | |
6652 | ||
6653 | add_com ("condition", class_breakpoint, condition_command, | |
6654 | "Specify breakpoint number N to break only if COND is true.\n\ | |
6655 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
6656 | expression to be evaluated whenever breakpoint N is reached. "); | |
6657 | ||
6658 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
6659 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
6660 | Like \"break\" except the breakpoint is only temporary,\n\ | |
6661 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
6662 | by using \"enable delete\" on the breakpoint number."); | |
c5aa993b JM |
6663 | add_com ("txbreak", class_breakpoint, tbreak_at_finish_command, |
6664 | "Set temporary breakpoint at procedure exit. Either there should\n\ | |
c906108c SS |
6665 | be no argument or the argument must be a depth.\n"); |
6666 | ||
6667 | add_com ("hbreak", class_breakpoint, hbreak_command, | |
6668 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
6669 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
6670 | some target hardware may not have this support."); | |
6671 | ||
6672 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
6673 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
6674 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
6675 | so it will be deleted when hit."); | |
6676 | ||
6677 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
6678 | "Enable some breakpoints.\n\ | |
6679 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
6680 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
6681 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6682 | With a subcommand you can enable temporarily.", | |
6683 | &enablelist, "enable ", 1, &cmdlist); | |
6684 | if (xdb_commands) | |
c5aa993b JM |
6685 | add_com ("ab", class_breakpoint, enable_command, |
6686 | "Enable some breakpoints.\n\ | |
c906108c SS |
6687 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
6688 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
6689 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6690 | With a subcommand you can enable temporarily."); | |
6691 | ||
6692 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
6693 | ||
6694 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 6695 | "Enable some breakpoints.\n\ |
c906108c SS |
6696 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
6697 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6698 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 6699 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
6700 | |
6701 | add_cmd ("once", no_class, enable_once_command, | |
6702 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
6703 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
6704 | &enablebreaklist); | |
6705 | ||
6706 | add_cmd ("delete", no_class, enable_delete_command, | |
6707 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
6708 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
6709 | &enablebreaklist); | |
6710 | ||
6711 | add_cmd ("delete", no_class, enable_delete_command, | |
6712 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
6713 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
6714 | &enablelist); | |
6715 | ||
6716 | add_cmd ("once", no_class, enable_once_command, | |
6717 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
6718 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
6719 | &enablelist); | |
6720 | ||
6721 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 6722 | "Disable some breakpoints.\n\ |
c906108c SS |
6723 | Arguments are breakpoint numbers with spaces in between.\n\ |
6724 | To disable all breakpoints, give no argument.\n\ | |
6725 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
6726 | &disablelist, "disable ", 1, &cmdlist); | |
6727 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
6728 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
6729 | if (xdb_commands) | |
c5aa993b JM |
6730 | add_com ("sb", class_breakpoint, disable_command, |
6731 | "Disable some breakpoints.\n\ | |
c906108c SS |
6732 | Arguments are breakpoint numbers with spaces in between.\n\ |
6733 | To disable all breakpoints, give no argument.\n\ | |
6734 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
6735 | ||
6736 | add_cmd ("breakpoints", class_alias, disable_command, | |
6737 | "Disable some breakpoints.\n\ | |
6738 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6739 | To disable all breakpoints, give no argument.\n\ | |
6740 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
6741 | This command may be abbreviated \"disable\".", | |
6742 | &disablelist); | |
6743 | ||
6744 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 6745 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
6746 | Arguments are breakpoint numbers with spaces in between.\n\ |
6747 | To delete all breakpoints, give no argument.\n\ | |
6748 | \n\ | |
6749 | Also a prefix command for deletion of other GDB objects.\n\ | |
6750 | The \"unset\" command is also an alias for \"delete\".", | |
6751 | &deletelist, "delete ", 1, &cmdlist); | |
6752 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
6753 | if (xdb_commands) | |
6754 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 6755 | "Delete some breakpoints.\n\ |
c906108c SS |
6756 | Arguments are breakpoint numbers with spaces in between.\n\ |
6757 | To delete all breakpoints, give no argument.\n"); | |
6758 | ||
6759 | add_cmd ("breakpoints", class_alias, delete_command, | |
6760 | "Delete some breakpoints or auto-display expressions.\n\ | |
6761 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6762 | To delete all breakpoints, give no argument.\n\ | |
6763 | This command may be abbreviated \"delete\".", | |
6764 | &deletelist); | |
6765 | ||
6766 | add_com ("clear", class_breakpoint, clear_command, | |
6767 | concat ("Clear breakpoint at specified line or function.\n\ | |
6768 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
6769 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
6770 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
6771 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 6772 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
6773 | is executing in.\n\ |
6774 | \n\ | |
6775 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
6776 | ||
6777 | add_com ("break", class_breakpoint, break_command, | |
6778 | concat ("Set breakpoint at specified line or function.\n\ | |
6779 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
6780 | If line number is specified, break at start of code for that line.\n\ | |
6781 | If function is specified, break at start of code for that function.\n\ | |
6782 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 6783 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
6784 | This is useful for breaking on return to a stack frame.\n\ |
6785 | \n\ | |
6786 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
6787 | \n\ | |
6788 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
6789 | add_com_alias ("b", "break", class_run, 1); | |
6790 | add_com_alias ("br", "break", class_run, 1); | |
6791 | add_com_alias ("bre", "break", class_run, 1); | |
6792 | add_com_alias ("brea", "break", class_run, 1); | |
6793 | ||
c5aa993b JM |
6794 | add_com ("xbreak", class_breakpoint, break_at_finish_command, |
6795 | concat ("Set breakpoint at procedure exit. \n\ | |
c906108c SS |
6796 | Argument may be function name, or \"*\" and an address.\n\ |
6797 | If function is specified, break at end of code for that function.\n\ | |
6798 | If an address is specified, break at the end of the function that contains \n\ | |
6799 | that exact address.\n", | |
c5aa993b | 6800 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
6801 | This is useful for breaking on return to a stack frame.\n\ |
6802 | \n\ | |
6803 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
6804 | \n\ | |
6805 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
6806 | add_com_alias ("xb", "xbreak", class_breakpoint, 1); | |
6807 | add_com_alias ("xbr", "xbreak", class_breakpoint, 1); | |
6808 | add_com_alias ("xbre", "xbreak", class_breakpoint, 1); | |
6809 | add_com_alias ("xbrea", "xbreak", class_breakpoint, 1); | |
6810 | ||
6811 | if (xdb_commands) | |
6812 | { | |
6813 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
6814 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
6815 | add_com ("bx", class_breakpoint, break_at_finish_at_depth_command, | |
c5aa993b | 6816 | "Set breakpoint at procedure exit. Either there should\n\ |
c906108c SS |
6817 | be no argument or the argument must be a depth.\n"); |
6818 | } | |
6819 | ||
6820 | if (dbx_commands) | |
6821 | { | |
c5aa993b JM |
6822 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
6823 | "Break in function/address or break at a line in the current file.", | |
6824 | &stoplist, "stop ", 1, &cmdlist); | |
6825 | add_cmd ("in", class_breakpoint, stopin_command, | |
6826 | "Break in function or address.\n", &stoplist); | |
6827 | add_cmd ("at", class_breakpoint, stopat_command, | |
6828 | "Break at a line in the current file.\n", &stoplist); | |
6829 | add_com ("status", class_info, breakpoints_info, | |
6830 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
6831 | The \"Type\" column indicates one of:\n\ |
6832 | \tbreakpoint - normal breakpoint\n\ | |
6833 | \twatchpoint - watchpoint\n\ | |
6834 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
6835 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
6836 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
6837 | address and file/line number respectively.\n\n", | |
c5aa993b | 6838 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
6839 | are set to the address of the last breakpoint listed.\n\n\ |
6840 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
6841 | breakpoint set.", NULL)); | |
6842 | } | |
6843 | ||
6844 | add_info ("breakpoints", breakpoints_info, | |
6845 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
6846 | The \"Type\" column indicates one of:\n\ | |
6847 | \tbreakpoint - normal breakpoint\n\ | |
6848 | \twatchpoint - watchpoint\n\ | |
6849 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
6850 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
6851 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
6852 | address and file/line number respectively.\n\n", | |
c5aa993b | 6853 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
6854 | are set to the address of the last breakpoint listed.\n\n\ |
6855 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
6856 | breakpoint set.", NULL)); | |
6857 | ||
6858 | if (xdb_commands) | |
c5aa993b JM |
6859 | add_com ("lb", class_breakpoint, breakpoints_info, |
6860 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
6861 | The \"Type\" column indicates one of:\n\ |
6862 | \tbreakpoint - normal breakpoint\n\ | |
6863 | \twatchpoint - watchpoint\n\ | |
6864 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
6865 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
6866 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
6867 | address and file/line number respectively.\n\n", | |
c5aa993b | 6868 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
6869 | are set to the address of the last breakpoint listed.\n\n\ |
6870 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
6871 | breakpoint set.", NULL)); | |
6872 | ||
c906108c | 6873 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 6874 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
6875 | The \"Type\" column indicates one of:\n\ |
6876 | \tbreakpoint - normal breakpoint\n\ | |
6877 | \twatchpoint - watchpoint\n\ | |
6878 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
6879 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
6880 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
6881 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 6882 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
6883 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
6884 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
6885 | address and file/line number respectively.\n\n", | |
c5aa993b | 6886 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
6887 | are set to the address of the last breakpoint listed.\n\n\ |
6888 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
6889 | breakpoint set.", NULL), | |
6890 | &maintenanceinfolist); | |
6891 | ||
c906108c | 6892 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 6893 | "Set catchpoints to catch events.\n\ |
c906108c SS |
6894 | Raised signals may be caught:\n\ |
6895 | \tcatch signal - all signals\n\ | |
6896 | \tcatch signal <signame> - a particular signal\n\ | |
6897 | Raised exceptions may be caught:\n\ | |
6898 | \tcatch throw - all exceptions, when thrown\n\ | |
6899 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
6900 | \tcatch catch - all exceptions, when caught\n\ | |
6901 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
6902 | Thread or process events may be caught:\n\ | |
6903 | \tcatch thread_start - any threads, just after creation\n\ | |
6904 | \tcatch thread_exit - any threads, just before expiration\n\ | |
6905 | \tcatch thread_join - any threads, just after joins\n\ | |
6906 | Process events may be caught:\n\ | |
6907 | \tcatch start - any processes, just after creation\n\ | |
6908 | \tcatch exit - any processes, just before expiration\n\ | |
6909 | \tcatch fork - calls to fork()\n\ | |
6910 | \tcatch vfork - calls to vfork()\n\ | |
6911 | \tcatch exec - calls to exec()\n\ | |
6912 | Dynamically-linked library events may be caught:\n\ | |
6913 | \tcatch load - loads of any library\n\ | |
6914 | \tcatch load <libname> - loads of a particular library\n\ | |
6915 | \tcatch unload - unloads of any library\n\ | |
6916 | \tcatch unload <libname> - unloads of a particular library\n\ | |
6917 | The act of your program's execution stopping may also be caught:\n\ | |
6918 | \tcatch stop\n\n\ | |
6919 | C++ exceptions may be caught:\n\ | |
6920 | \tcatch throw - all exceptions, when thrown\n\ | |
6921 | \tcatch catch - all exceptions, when caught\n\ | |
6922 | \n\ | |
6923 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
6924 | after a fork or vfork is caught.\n\n\ | |
6925 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 6926 | |
c906108c | 6927 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 6928 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
6929 | Args like \"catch\" command.\n\ |
6930 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
6931 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
6932 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b JM |
6933 | |
6934 | add_com ("watch", class_breakpoint, watch_command, | |
c906108c SS |
6935 | "Set a watchpoint for an expression.\n\ |
6936 | A watchpoint stops execution of your program whenever the value of\n\ | |
6937 | an expression changes."); | |
6938 | ||
6939 | add_com ("rwatch", class_breakpoint, rwatch_command, | |
6940 | "Set a read watchpoint for an expression.\n\ | |
6941 | A watchpoint stops execution of your program whenever the value of\n\ | |
6942 | an expression is read."); | |
6943 | ||
6944 | add_com ("awatch", class_breakpoint, awatch_command, | |
6945 | "Set a watchpoint for an expression.\n\ | |
6946 | A watchpoint stops execution of your program whenever the value of\n\ | |
6947 | an expression is either read or written."); | |
6948 | ||
6949 | add_info ("watchpoints", breakpoints_info, | |
6950 | "Synonym for ``info breakpoints''."); | |
6951 | ||
6952 | ||
6953 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
6954 | (char *) &can_use_hw_watchpoints, |
6955 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
6956 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
6957 | such is available. (However, any hardware watchpoints that were\n\ | |
6958 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
6959 | hardware.)", | |
c5aa993b | 6960 | &setlist); |
c906108c SS |
6961 | add_show_from_set (c, &showlist); |
6962 | ||
6963 | can_use_hw_watchpoints = 1; | |
6964 | } |