Commit | Line | Data |
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bd5635a1 | 1 | /* Everything about breakpoints, for GDB. |
30875e1c | 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc. |
bd5635a1 RP |
3 | |
4 | This file is part of GDB. | |
5 | ||
bdbd5f50 | 6 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 7 | it under the terms of the GNU General Public License as published by |
bdbd5f50 JG |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
bd5635a1 | 10 | |
bdbd5f50 | 11 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
bdbd5f50 JG |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 19 | |
bd5635a1 | 20 | #include "defs.h" |
1eeba686 | 21 | #include <ctype.h> |
bd5635a1 RP |
22 | #include "symtab.h" |
23 | #include "frame.h" | |
24 | #include "breakpoint.h" | |
30875e1c | 25 | #include "gdbtypes.h" |
bd5635a1 RP |
26 | #include "expression.h" |
27 | #include "gdbcore.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "value.h" | |
30 | #include "ctype.h" | |
31 | #include "command.h" | |
32 | #include "inferior.h" | |
33 | #include "target.h" | |
d3b9c0df | 34 | #include "language.h" |
bd5635a1 | 35 | #include <string.h> |
423e9664 | 36 | #include "demangle.h" |
bd5635a1 | 37 | |
30875e1c SG |
38 | /* local function prototypes */ |
39 | ||
40 | static void | |
41 | catch_command_1 PARAMS ((char *, int, int)); | |
42 | ||
43 | static void | |
44 | enable_delete_command PARAMS ((char *, int)); | |
45 | ||
46 | static void | |
47 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
48 | ||
49 | static void | |
50 | enable_once_command PARAMS ((char *, int)); | |
51 | ||
52 | static void | |
53 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
54 | ||
55 | static void | |
56 | disable_command PARAMS ((char *, int)); | |
57 | ||
58 | static void | |
59 | disable_breakpoint PARAMS ((struct breakpoint *)); | |
60 | ||
61 | static void | |
62 | enable_command PARAMS ((char *, int)); | |
63 | ||
64 | static void | |
65 | enable_breakpoint PARAMS ((struct breakpoint *)); | |
66 | ||
67 | static void | |
68 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); | |
69 | ||
70 | static void | |
71 | ignore_command PARAMS ((char *, int)); | |
72 | ||
73 | static int | |
74 | breakpoint_re_set_one PARAMS ((char *)); | |
75 | ||
76 | static void | |
77 | delete_command PARAMS ((char *, int)); | |
78 | ||
79 | static void | |
80 | clear_command PARAMS ((char *, int)); | |
81 | ||
82 | static void | |
83 | catch_command PARAMS ((char *, 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 void | |
92 | tbreak_command PARAMS ((char *, int)); | |
93 | ||
94 | static void | |
95 | break_command_1 PARAMS ((char *, int, int)); | |
96 | ||
97 | static void | |
98 | mention PARAMS ((struct breakpoint *)); | |
99 | ||
100 | static struct breakpoint * | |
101 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); | |
102 | ||
103 | static void | |
104 | check_duplicates PARAMS ((CORE_ADDR)); | |
105 | ||
106 | static void | |
107 | describe_other_breakpoints PARAMS ((CORE_ADDR)); | |
108 | ||
30875e1c SG |
109 | static void |
110 | breakpoints_info PARAMS ((char *, int)); | |
111 | ||
112 | static void | |
423e9664 | 113 | breakpoint_1 PARAMS ((int, int)); |
30875e1c SG |
114 | |
115 | static bpstat | |
116 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); | |
117 | ||
118 | static int | |
119 | breakpoint_cond_eval PARAMS ((char *)); | |
120 | ||
121 | static void | |
122 | cleanup_executing_breakpoints PARAMS ((int)); | |
123 | ||
124 | static void | |
125 | commands_command PARAMS ((char *, int)); | |
126 | ||
127 | static void | |
128 | condition_command PARAMS ((char *, int)); | |
129 | ||
130 | static int | |
131 | get_number PARAMS ((char **)); | |
132 | ||
133 | static void | |
134 | set_breakpoint_count PARAMS ((int)); | |
135 | ||
136 | ||
bd5635a1 RP |
137 | extern int addressprint; /* Print machine addresses? */ |
138 | extern int demangle; /* Print de-mangled symbol names? */ | |
139 | ||
bd5635a1 RP |
140 | /* Are we executing breakpoint commands? */ |
141 | static int executing_breakpoint_commands; | |
142 | ||
cba0d141 JG |
143 | /* Walk the following statement or block through all breakpoints. |
144 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
145 | breakpoint. */ | |
146 | ||
bd5635a1 RP |
147 | #define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) |
148 | ||
cba0d141 JG |
149 | #define ALL_BREAKPOINTS_SAFE(b,tmp) \ |
150 | for (b = breakpoint_chain; \ | |
151 | b? (tmp=b->next, 1): 0; \ | |
152 | b = tmp) | |
153 | ||
bd5635a1 RP |
154 | /* Chain of all breakpoints defined. */ |
155 | ||
156 | struct breakpoint *breakpoint_chain; | |
157 | ||
158 | /* Number of last breakpoint made. */ | |
159 | ||
160 | static int breakpoint_count; | |
161 | ||
162 | /* Set breakpoint count to NUM. */ | |
163 | static void | |
164 | set_breakpoint_count (num) | |
165 | int num; | |
166 | { | |
167 | breakpoint_count = num; | |
168 | set_internalvar (lookup_internalvar ("bpnum"), | |
06b6c733 | 169 | value_from_longest (builtin_type_int, (LONGEST) num)); |
bd5635a1 RP |
170 | } |
171 | ||
172 | /* Default address, symtab and line to put a breakpoint at | |
173 | for "break" command with no arg. | |
174 | if default_breakpoint_valid is zero, the other three are | |
175 | not valid, and "break" with no arg is an error. | |
176 | ||
177 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
178 | ||
179 | int default_breakpoint_valid; | |
180 | CORE_ADDR default_breakpoint_address; | |
181 | struct symtab *default_breakpoint_symtab; | |
182 | int default_breakpoint_line; | |
183 | ||
bd5635a1 RP |
184 | /* Flag indicating extra verbosity for xgdb. */ |
185 | extern int xgdb_verbose; | |
186 | \f | |
187 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
188 | Advance *PP after the string and any trailing whitespace. | |
189 | ||
190 | Currently the string can either be a number or "$" followed by the name | |
191 | of a convenience variable. Making it an expression wouldn't work well | |
192 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
193 | static int | |
194 | get_number (pp) | |
195 | char **pp; | |
196 | { | |
197 | int retval; | |
198 | char *p = *pp; | |
199 | ||
200 | if (p == NULL) | |
201 | /* Empty line means refer to the last breakpoint. */ | |
202 | return breakpoint_count; | |
203 | else if (*p == '$') | |
204 | { | |
205 | /* Make a copy of the name, so we can null-terminate it | |
206 | to pass to lookup_internalvar(). */ | |
207 | char *varname; | |
208 | char *start = ++p; | |
209 | value val; | |
210 | ||
211 | while (isalnum (*p) || *p == '_') | |
212 | p++; | |
213 | varname = (char *) alloca (p - start + 1); | |
214 | strncpy (varname, start, p - start); | |
215 | varname[p - start] = '\0'; | |
216 | val = value_of_internalvar (lookup_internalvar (varname)); | |
217 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
218 | error ( | |
219 | "Convenience variables used to specify breakpoints must have integer values." | |
220 | ); | |
221 | retval = (int) value_as_long (val); | |
222 | } | |
223 | else | |
224 | { | |
80ba48f5 SG |
225 | if (*p == '-') |
226 | ++p; | |
bd5635a1 RP |
227 | while (*p >= '0' && *p <= '9') |
228 | ++p; | |
229 | if (p == *pp) | |
230 | /* There is no number here. (e.g. "cond a == b"). */ | |
231 | error_no_arg ("breakpoint number"); | |
232 | retval = atoi (*pp); | |
233 | } | |
234 | if (!(isspace (*p) || *p == '\0')) | |
235 | error ("breakpoint number expected"); | |
236 | while (isspace (*p)) | |
237 | p++; | |
238 | *pp = p; | |
239 | return retval; | |
240 | } | |
241 | \f | |
242 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
243 | ||
244 | static void | |
245 | condition_command (arg, from_tty) | |
246 | char *arg; | |
247 | int from_tty; | |
248 | { | |
249 | register struct breakpoint *b; | |
250 | char *p; | |
251 | register int bnum; | |
252 | ||
253 | if (arg == 0) | |
254 | error_no_arg ("breakpoint number"); | |
255 | ||
256 | p = arg; | |
257 | bnum = get_number (&p); | |
258 | ||
259 | ALL_BREAKPOINTS (b) | |
260 | if (b->number == bnum) | |
261 | { | |
262 | if (b->cond) | |
263 | { | |
c8950965 | 264 | free ((PTR)b->cond); |
bd5635a1 RP |
265 | b->cond = 0; |
266 | } | |
267 | if (b->cond_string != NULL) | |
c8950965 | 268 | free ((PTR)b->cond_string); |
bd5635a1 RP |
269 | |
270 | if (*p == 0) | |
271 | { | |
272 | b->cond = 0; | |
273 | b->cond_string = NULL; | |
274 | if (from_tty) | |
423e9664 | 275 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); |
bd5635a1 RP |
276 | } |
277 | else | |
278 | { | |
279 | arg = p; | |
280 | /* I don't know if it matters whether this is the string the user | |
281 | typed in or the decompiled expression. */ | |
282 | b->cond_string = savestring (arg, strlen (arg)); | |
d3b9c0df | 283 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); |
bd5635a1 RP |
284 | if (*arg) |
285 | error ("Junk at end of expression"); | |
286 | } | |
287 | return; | |
288 | } | |
289 | ||
290 | error ("No breakpoint number %d.", bnum); | |
291 | } | |
292 | ||
bdbd5f50 | 293 | /* ARGSUSED */ |
bd5635a1 RP |
294 | static void |
295 | commands_command (arg, from_tty) | |
296 | char *arg; | |
297 | int from_tty; | |
298 | { | |
299 | register struct breakpoint *b; | |
300 | char *p; | |
301 | register int bnum; | |
302 | struct command_line *l; | |
303 | ||
304 | /* If we allowed this, we would have problems with when to | |
305 | free the storage, if we change the commands currently | |
306 | being read from. */ | |
307 | ||
308 | if (executing_breakpoint_commands) | |
309 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
310 | ||
311 | p = arg; | |
312 | bnum = get_number (&p); | |
313 | if (p && *p) | |
314 | error ("Unexpected extra arguments following breakpoint number."); | |
315 | ||
316 | ALL_BREAKPOINTS (b) | |
317 | if (b->number == bnum) | |
318 | { | |
bdbd5f50 | 319 | if (from_tty && input_from_terminal_p ()) |
9b280a7f | 320 | printf_filtered ("Type commands for when breakpoint %d is hit, one per line.\n\ |
bd5635a1 | 321 | End with a line saying just \"end\".\n", bnum); |
bd5635a1 RP |
322 | l = read_command_lines (); |
323 | free_command_lines (&b->commands); | |
324 | b->commands = l; | |
325 | return; | |
326 | } | |
327 | error ("No breakpoint number %d.", bnum); | |
328 | } | |
329 | \f | |
31ef19fc JK |
330 | extern int memory_breakpoint_size; /* from mem-break.c */ |
331 | ||
332 | /* Like target_read_memory() but if breakpoints are inserted, return | |
30875e1c SG |
333 | the shadow contents instead of the breakpoints themselves. |
334 | ||
335 | Read "memory data" from whatever target or inferior we have. | |
336 | Returns zero if successful, errno value if not. EIO is used | |
337 | for address out of bounds. If breakpoints are inserted, returns | |
338 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
339 | ||
31ef19fc JK |
340 | int |
341 | read_memory_nobpt (memaddr, myaddr, len) | |
342 | CORE_ADDR memaddr; | |
343 | char *myaddr; | |
344 | unsigned len; | |
345 | { | |
346 | int status; | |
347 | struct breakpoint *b; | |
348 | ||
349 | if (memory_breakpoint_size < 0) | |
350 | /* No breakpoints on this machine. */ | |
351 | return target_read_memory (memaddr, myaddr, len); | |
352 | ||
353 | ALL_BREAKPOINTS (b) | |
354 | { | |
30875e1c | 355 | if (b->type == bp_watchpoint || !b->inserted) |
31ef19fc JK |
356 | continue; |
357 | else if (b->address + memory_breakpoint_size <= memaddr) | |
358 | /* The breakpoint is entirely before the chunk of memory | |
359 | we are reading. */ | |
360 | continue; | |
361 | else if (b->address >= memaddr + len) | |
362 | /* The breakpoint is entirely after the chunk of memory we | |
363 | are reading. */ | |
364 | continue; | |
365 | else | |
366 | { | |
367 | /* Copy the breakpoint from the shadow contents, and recurse | |
368 | for the things before and after. */ | |
369 | ||
370 | /* Addresses and length of the part of the breakpoint that | |
371 | we need to copy. */ | |
372 | CORE_ADDR membpt = b->address; | |
373 | unsigned int bptlen = memory_breakpoint_size; | |
374 | /* Offset within shadow_contents. */ | |
375 | int bptoffset = 0; | |
376 | ||
377 | if (membpt < memaddr) | |
378 | { | |
379 | /* Only copy the second part of the breakpoint. */ | |
380 | bptlen -= memaddr - membpt; | |
381 | bptoffset = memaddr - membpt; | |
382 | membpt = memaddr; | |
383 | } | |
384 | ||
385 | if (membpt + bptlen > memaddr + len) | |
386 | { | |
387 | /* Only copy the first part of the breakpoint. */ | |
388 | bptlen -= (membpt + bptlen) - (memaddr + len); | |
389 | } | |
390 | ||
4ed3a9ea FF |
391 | memcpy (myaddr + membpt - memaddr, |
392 | b->shadow_contents + bptoffset, bptlen); | |
31ef19fc JK |
393 | |
394 | if (membpt > memaddr) | |
395 | { | |
396 | /* Copy the section of memory before the breakpoint. */ | |
397 | status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr); | |
398 | if (status != 0) | |
399 | return status; | |
400 | } | |
401 | ||
402 | if (membpt + bptlen < memaddr + len) | |
403 | { | |
404 | /* Copy the section of memory after the breakpoint. */ | |
405 | status = read_memory_nobpt | |
406 | (membpt + bptlen, | |
407 | myaddr + membpt + bptlen - memaddr, | |
408 | memaddr + len - (membpt + bptlen)); | |
409 | if (status != 0) | |
410 | return status; | |
411 | } | |
412 | return 0; | |
413 | } | |
414 | } | |
415 | /* Nothing overlaps. Just call read_memory_noerr. */ | |
416 | return target_read_memory (memaddr, myaddr, len); | |
417 | } | |
418 | \f | |
bd5635a1 RP |
419 | /* insert_breakpoints is used when starting or continuing the program. |
420 | remove_breakpoints is used when the program stops. | |
421 | Both return zero if successful, | |
422 | or an `errno' value if could not write the inferior. */ | |
423 | ||
424 | int | |
425 | insert_breakpoints () | |
426 | { | |
427 | register struct breakpoint *b; | |
428 | int val = 0; | |
429 | int disabled_breaks = 0; | |
430 | ||
431 | ALL_BREAKPOINTS (b) | |
30875e1c | 432 | if (b->type != bp_watchpoint |
bd5635a1 RP |
433 | && b->enable != disabled |
434 | && ! b->inserted | |
435 | && ! b->duplicate) | |
436 | { | |
437 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
438 | if (val) | |
439 | { | |
440 | /* Can't set the breakpoint. */ | |
441 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
442 | if (DISABLE_UNSETTABLE_BREAK (b->address)) | |
443 | { | |
444 | val = 0; | |
445 | b->enable = disabled; | |
446 | if (!disabled_breaks) | |
447 | { | |
2d313932 JK |
448 | fprintf (stderr, |
449 | "Cannot insert breakpoint %d:\n", b->number); | |
bd5635a1 RP |
450 | printf_filtered ("Disabling shared library breakpoints:\n"); |
451 | } | |
452 | disabled_breaks = 1; | |
453 | printf_filtered ("%d ", b->number); | |
454 | } | |
455 | else | |
456 | #endif | |
457 | { | |
2d313932 | 458 | fprintf (stderr, "Cannot insert breakpoint %d:\n", b->number); |
d3b9c0df | 459 | #ifdef ONE_PROCESS_WRITETEXT |
2d313932 JK |
460 | fprintf (stderr, |
461 | "The same program may be running in another process.\n"); | |
d3b9c0df | 462 | #endif |
bd5635a1 RP |
463 | memory_error (val, b->address); /* which bombs us out */ |
464 | } | |
465 | } | |
466 | else | |
467 | b->inserted = 1; | |
468 | } | |
469 | if (disabled_breaks) | |
470 | printf_filtered ("\n"); | |
471 | return val; | |
472 | } | |
473 | ||
474 | int | |
475 | remove_breakpoints () | |
476 | { | |
477 | register struct breakpoint *b; | |
478 | int val; | |
479 | ||
480 | #ifdef BREAKPOINT_DEBUG | |
2d313932 | 481 | printf ("Removing breakpoints.\n"); |
bd5635a1 RP |
482 | #endif /* BREAKPOINT_DEBUG */ |
483 | ||
484 | ALL_BREAKPOINTS (b) | |
30875e1c | 485 | if (b->type != bp_watchpoint && b->inserted) |
bd5635a1 RP |
486 | { |
487 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
488 | if (val) | |
489 | return val; | |
490 | b->inserted = 0; | |
491 | #ifdef BREAKPOINT_DEBUG | |
2d313932 JK |
492 | printf ("Removed breakpoint at %s", |
493 | local_hex_string(b->address)); | |
494 | printf (", shadow %s", | |
495 | local_hex_string(b->shadow_contents[0])); | |
496 | printf (", %s.\n", | |
497 | local_hex_string(b->shadow_contents[1])); | |
bd5635a1 RP |
498 | #endif /* BREAKPOINT_DEBUG */ |
499 | } | |
500 | ||
501 | return 0; | |
502 | } | |
503 | ||
504 | /* Clear the "inserted" flag in all breakpoints. | |
505 | This is done when the inferior is loaded. */ | |
506 | ||
507 | void | |
508 | mark_breakpoints_out () | |
509 | { | |
510 | register struct breakpoint *b; | |
511 | ||
512 | ALL_BREAKPOINTS (b) | |
513 | b->inserted = 0; | |
514 | } | |
515 | ||
516 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. | |
517 | When continuing from a location with a breakpoint, | |
518 | we actually single step once before calling insert_breakpoints. */ | |
519 | ||
520 | int | |
521 | breakpoint_here_p (pc) | |
522 | CORE_ADDR pc; | |
523 | { | |
524 | register struct breakpoint *b; | |
525 | ||
526 | ALL_BREAKPOINTS (b) | |
527 | if (b->enable != disabled && b->address == pc) | |
528 | return 1; | |
529 | ||
530 | return 0; | |
531 | } | |
532 | \f | |
533 | /* bpstat stuff. External routines' interfaces are documented | |
534 | in breakpoint.h. */ | |
30875e1c SG |
535 | |
536 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
537 | Also free any storage that is part of a bpstat. */ | |
538 | ||
bd5635a1 RP |
539 | void |
540 | bpstat_clear (bsp) | |
541 | bpstat *bsp; | |
542 | { | |
543 | bpstat p; | |
544 | bpstat q; | |
545 | ||
546 | if (bsp == 0) | |
547 | return; | |
548 | p = *bsp; | |
549 | while (p != NULL) | |
550 | { | |
551 | q = p->next; | |
552 | if (p->old_val != NULL) | |
553 | value_free (p->old_val); | |
c8950965 | 554 | free ((PTR)p); |
bd5635a1 RP |
555 | p = q; |
556 | } | |
557 | *bsp = NULL; | |
558 | } | |
559 | ||
30875e1c SG |
560 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
561 | is part of the bpstat is copied as well. */ | |
562 | ||
bd5635a1 RP |
563 | bpstat |
564 | bpstat_copy (bs) | |
565 | bpstat bs; | |
566 | { | |
567 | bpstat p = NULL; | |
568 | bpstat tmp; | |
569 | bpstat retval; | |
570 | ||
571 | if (bs == NULL) | |
572 | return bs; | |
573 | ||
574 | for (; bs != NULL; bs = bs->next) | |
575 | { | |
576 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4ed3a9ea | 577 | memcpy (tmp, bs, sizeof (*tmp)); |
bd5635a1 RP |
578 | if (p == NULL) |
579 | /* This is the first thing in the chain. */ | |
580 | retval = tmp; | |
581 | else | |
582 | p->next = tmp; | |
583 | p = tmp; | |
584 | } | |
585 | p->next = NULL; | |
586 | return retval; | |
587 | } | |
588 | ||
30875e1c SG |
589 | /* Find the bpstat associated with this breakpoint */ |
590 | ||
591 | bpstat | |
592 | bpstat_find_breakpoint(bsp, breakpoint) | |
593 | bpstat bsp; | |
594 | struct breakpoint *breakpoint; | |
595 | { | |
596 | if (bsp == NULL) return NULL; | |
597 | ||
598 | for (;bsp != NULL; bsp = bsp->next) { | |
599 | if (bsp->breakpoint_at == breakpoint) return bsp; | |
600 | } | |
601 | return NULL; | |
602 | } | |
603 | ||
604 | /* Return the breakpoint number of the first breakpoint we are stopped | |
605 | at. *BSP upon return is a bpstat which points to the remaining | |
606 | breakpoints stopped at (but which is not guaranteed to be good for | |
607 | anything but further calls to bpstat_num). | |
608 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
609 | ||
bd5635a1 RP |
610 | int |
611 | bpstat_num (bsp) | |
612 | bpstat *bsp; | |
613 | { | |
614 | struct breakpoint *b; | |
615 | ||
616 | if ((*bsp) == NULL) | |
617 | return 0; /* No more breakpoint values */ | |
618 | else | |
619 | { | |
620 | b = (*bsp)->breakpoint_at; | |
621 | *bsp = (*bsp)->next; | |
622 | if (b == NULL) | |
623 | return -1; /* breakpoint that's been deleted since */ | |
624 | else | |
625 | return b->number; /* We have its number */ | |
626 | } | |
627 | } | |
628 | ||
30875e1c SG |
629 | /* Modify BS so that the actions will not be performed. */ |
630 | ||
bd5635a1 RP |
631 | void |
632 | bpstat_clear_actions (bs) | |
633 | bpstat bs; | |
634 | { | |
635 | for (; bs != NULL; bs = bs->next) | |
636 | { | |
637 | bs->commands = NULL; | |
638 | if (bs->old_val != NULL) | |
639 | { | |
640 | value_free (bs->old_val); | |
641 | bs->old_val = NULL; | |
642 | } | |
643 | } | |
644 | } | |
645 | ||
bdbd5f50 JG |
646 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
647 | /* ARGSUSED */ | |
648 | static void | |
649 | cleanup_executing_breakpoints (ignore) | |
650 | int ignore; | |
651 | { | |
652 | executing_breakpoint_commands = 0; | |
653 | } | |
654 | ||
bd5635a1 RP |
655 | /* Execute all the commands associated with all the breakpoints at this |
656 | location. Any of these commands could cause the process to proceed | |
657 | beyond this point, etc. We look out for such changes by checking | |
658 | the global "breakpoint_proceeded" after each command. */ | |
30875e1c | 659 | |
bd5635a1 RP |
660 | void |
661 | bpstat_do_actions (bsp) | |
662 | bpstat *bsp; | |
663 | { | |
664 | bpstat bs; | |
bdbd5f50 JG |
665 | struct cleanup *old_chain; |
666 | ||
667 | executing_breakpoint_commands = 1; | |
668 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
bd5635a1 RP |
669 | |
670 | top: | |
671 | bs = *bsp; | |
672 | ||
bd5635a1 RP |
673 | breakpoint_proceeded = 0; |
674 | for (; bs != NULL; bs = bs->next) | |
675 | { | |
676 | while (bs->commands) | |
677 | { | |
678 | char *line = bs->commands->line; | |
679 | bs->commands = bs->commands->next; | |
680 | execute_command (line, 0); | |
681 | /* If the inferior is proceeded by the command, bomb out now. | |
682 | The bpstat chain has been blown away by wait_for_inferior. | |
683 | But since execution has stopped again, there is a new bpstat | |
684 | to look at, so start over. */ | |
685 | if (breakpoint_proceeded) | |
686 | goto top; | |
687 | } | |
688 | } | |
bd5635a1 RP |
689 | |
690 | executing_breakpoint_commands = 0; | |
bdbd5f50 | 691 | discard_cleanups (old_chain); |
bd5635a1 RP |
692 | } |
693 | ||
8af68e4e JK |
694 | /* This is the normal print_it function for a bpstat. In the future, |
695 | much of this logic could (should?) be moved to bpstat_stop_status, | |
696 | by having it set different print_it functions. */ | |
30875e1c | 697 | |
8af68e4e JK |
698 | static int |
699 | print_it_normal (bs) | |
bd5635a1 RP |
700 | bpstat bs; |
701 | { | |
702 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
703 | which has since been deleted. */ | |
8af68e4e | 704 | if (bs->breakpoint_at == NULL |
30875e1c SG |
705 | || (bs->breakpoint_at->type != bp_breakpoint |
706 | && bs->breakpoint_at->type != bp_watchpoint)) | |
bd5635a1 | 707 | return 0; |
bd5635a1 | 708 | |
30875e1c | 709 | if (bs->breakpoint_at->type == bp_breakpoint) |
bd5635a1 RP |
710 | { |
711 | /* I think the user probably only wants to see one breakpoint | |
712 | number, not all of them. */ | |
713 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); | |
714 | return 0; | |
715 | } | |
716 | ||
717 | if (bs->old_val != NULL) | |
718 | { | |
719 | printf_filtered ("\nWatchpoint %d, ", bs->breakpoint_at->number); | |
720 | print_expression (bs->breakpoint_at->exp, stdout); | |
721 | printf_filtered ("\nOld value = "); | |
722 | value_print (bs->old_val, stdout, 0, Val_pretty_default); | |
723 | printf_filtered ("\nNew value = "); | |
724 | value_print (bs->breakpoint_at->val, stdout, 0, | |
725 | Val_pretty_default); | |
726 | printf_filtered ("\n"); | |
727 | value_free (bs->old_val); | |
728 | bs->old_val = NULL; | |
3f031adf | 729 | return 0; |
bd5635a1 | 730 | } |
8af68e4e JK |
731 | /* We can't deal with it. Maybe another member of the bpstat chain can. */ |
732 | return -1; | |
733 | } | |
734 | ||
735 | /* Print a message indicating what happened. Returns nonzero to | |
736 | say that only the source line should be printed after this (zero | |
737 | return means print the frame as well as the source line). */ | |
3f031adf | 738 | /* Currently we always return zero. */ |
8af68e4e JK |
739 | int |
740 | bpstat_print (bs) | |
741 | bpstat bs; | |
742 | { | |
743 | int val; | |
744 | ||
745 | if (bs == NULL) | |
746 | return 0; | |
bd5635a1 | 747 | |
8af68e4e JK |
748 | val = (*bs->print_it) (bs); |
749 | if (val >= 0) | |
750 | return val; | |
751 | ||
fcb887ff JK |
752 | /* Maybe another breakpoint in the chain caused us to stop. |
753 | (Currently all watchpoints go on the bpstat whether hit or | |
754 | not. That probably could (should) be changed, provided care is taken | |
755 | with respect to bpstat_explains_signal). */ | |
756 | if (bs->next) | |
757 | return bpstat_print (bs->next); | |
758 | ||
cabd4da6 | 759 | /* We reached the end of the chain without printing anything. */ |
bd5635a1 RP |
760 | return 0; |
761 | } | |
762 | ||
763 | /* Evaluate the expression EXP and return 1 if value is zero. | |
764 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
bdbd5f50 | 765 | The argument is a "struct expression *" that has been cast to char * to |
bd5635a1 RP |
766 | make it pass through catch_errors. */ |
767 | ||
768 | static int | |
769 | breakpoint_cond_eval (exp) | |
bdbd5f50 | 770 | char *exp; |
bd5635a1 | 771 | { |
d3b9c0df | 772 | return !value_true (evaluate_expression ((struct expression *)exp)); |
bd5635a1 RP |
773 | } |
774 | ||
775 | /* Allocate a new bpstat and chain it to the current one. */ | |
776 | ||
777 | static bpstat | |
778 | bpstat_alloc (b, cbs) | |
779 | register struct breakpoint *b; | |
780 | bpstat cbs; /* Current "bs" value */ | |
781 | { | |
782 | bpstat bs; | |
783 | ||
784 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
785 | cbs->next = bs; | |
786 | bs->breakpoint_at = b; | |
787 | /* If the condition is false, etc., don't do the commands. */ | |
788 | bs->commands = NULL; | |
bd5635a1 | 789 | bs->old_val = NULL; |
8af68e4e | 790 | bs->print_it = print_it_normal; |
bd5635a1 RP |
791 | return bs; |
792 | } | |
793 | ||
8af68e4e JK |
794 | /* Possible return values for watchpoint_check (this can't be an enum |
795 | because of check_errors). */ | |
796 | /* The watchpoint has been disabled. */ | |
797 | #define WP_DISABLED 1 | |
798 | /* The value has changed. */ | |
799 | #define WP_VALUE_CHANGED 2 | |
800 | /* The value has not changed. */ | |
801 | #define WP_VALUE_NOT_CHANGED 3 | |
802 | ||
803 | /* Check watchpoint condition. */ | |
804 | static int | |
805 | watchpoint_check (p) | |
806 | PTR p; | |
807 | { | |
808 | bpstat bs = (bpstat) p; | |
809 | ||
810 | int within_current_scope; | |
811 | if (bs->breakpoint_at->exp_valid_block != NULL) | |
812 | within_current_scope = | |
813 | contained_in (get_selected_block (), bs->breakpoint_at->exp_valid_block); | |
814 | else | |
815 | within_current_scope = 1; | |
816 | ||
817 | if (within_current_scope) | |
818 | { | |
819 | /* We use value_{,free_to_}mark because it could be a | |
820 | *long* time before we return to the command level and | |
821 | call free_all_values. */ | |
822 | /* But couldn't we just call free_all_values instead? */ | |
823 | ||
824 | value mark = value_mark (); | |
825 | value new_val = evaluate_expression (bs->breakpoint_at->exp); | |
826 | if (!value_equal (bs->breakpoint_at->val, new_val)) | |
827 | { | |
828 | release_value (new_val); | |
829 | value_free_to_mark (mark); | |
830 | bs->old_val = bs->breakpoint_at->val; | |
831 | bs->breakpoint_at->val = new_val; | |
832 | /* We will stop here */ | |
833 | return WP_VALUE_CHANGED; | |
834 | } | |
835 | else | |
836 | { | |
837 | /* Nothing changed, don't do anything. */ | |
838 | value_free_to_mark (mark); | |
839 | /* We won't stop here */ | |
840 | return WP_VALUE_NOT_CHANGED; | |
841 | } | |
842 | } | |
843 | else | |
844 | { | |
845 | /* This seems like the only logical thing to do because | |
846 | if we temporarily ignored the watchpoint, then when | |
847 | we reenter the block in which it is valid it contains | |
848 | garbage (in the case of a function, it may have two | |
849 | garbage values, one before and one after the prologue). | |
850 | So we can't even detect the first assignment to it and | |
851 | watch after that (since the garbage may or may not equal | |
852 | the first value assigned). */ | |
853 | bs->breakpoint_at->enable = disabled; | |
854 | printf_filtered ("\ | |
855 | Watchpoint %d disabled because the program has left the block in\n\ | |
856 | which its expression is valid.\n", bs->breakpoint_at->number); | |
857 | return WP_DISABLED; | |
858 | } | |
859 | } | |
860 | ||
861 | /* This is used when everything which needs to be printed has | |
862 | already been printed. But we still want to print the frame. */ | |
863 | static int | |
cabd4da6 | 864 | print_it_done (bs) |
8af68e4e JK |
865 | bpstat bs; |
866 | { | |
867 | return 0; | |
868 | } | |
869 | ||
cabd4da6 JK |
870 | /* This is used when nothing should be printed for this bpstat entry. */ |
871 | ||
872 | static int | |
873 | print_it_noop (bs) | |
874 | bpstat bs; | |
875 | { | |
876 | return -1; | |
877 | } | |
878 | ||
bd5635a1 RP |
879 | /* Determine whether we stopped at a breakpoint, etc, or whether we |
880 | don't understand this stop. Result is a chain of bpstat's such that: | |
881 | ||
882 | if we don't understand the stop, the result is a null pointer. | |
883 | ||
884 | if we understand why we stopped, the result is not null, and | |
885 | the first element of the chain contains summary "stop" and | |
886 | "print" flags for the whole chain. | |
887 | ||
888 | Each element of the chain refers to a particular breakpoint or | |
889 | watchpoint at which we have stopped. (We may have stopped for | |
2d313932 | 890 | several reasons concurrently.) |
bd5635a1 RP |
891 | |
892 | Each element of the chain has valid next, breakpoint_at, | |
893 | commands, FIXME??? fields. | |
894 | ||
895 | */ | |
896 | ||
897 | ||
898 | bpstat | |
899 | bpstat_stop_status (pc, frame_address) | |
900 | CORE_ADDR *pc; | |
901 | FRAME_ADDR frame_address; | |
902 | { | |
903 | register struct breakpoint *b; | |
bd5635a1 | 904 | CORE_ADDR bp_addr; |
bdbd5f50 | 905 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
906 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
907 | int real_breakpoint = 0; | |
bdbd5f50 | 908 | #endif |
bd5635a1 | 909 | /* Root of the chain of bpstat's */ |
cba0d141 | 910 | struct bpstat root_bs[1]; |
bd5635a1 RP |
911 | /* Pointer to the last thing in the chain currently. */ |
912 | bpstat bs = root_bs; | |
913 | ||
914 | /* Get the address where the breakpoint would have been. */ | |
915 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
916 | ||
917 | ALL_BREAKPOINTS (b) | |
918 | { | |
bd5635a1 RP |
919 | if (b->enable == disabled) |
920 | continue; | |
30875e1c SG |
921 | |
922 | if (b->type != bp_watchpoint && b->address != bp_addr) | |
bd5635a1 RP |
923 | continue; |
924 | ||
30875e1c SG |
925 | /* Come here if it's a watchpoint, or if the break address matches */ |
926 | ||
bd5635a1 RP |
927 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ |
928 | ||
cabd4da6 JK |
929 | bs->stop = 1; |
930 | bs->print = 1; | |
bd5635a1 | 931 | |
30875e1c | 932 | if (b->type == bp_watchpoint) |
bd5635a1 | 933 | { |
8af68e4e JK |
934 | static char message1[] = |
935 | "Error evaluating expression for watchpoint %d\n"; | |
936 | char message[sizeof (message1) + 30 /* slop */]; | |
937 | sprintf (message, message1, b->number); | |
359a097f | 938 | switch (catch_errors (watchpoint_check, (char *) bs, message)) |
bd5635a1 | 939 | { |
8af68e4e JK |
940 | case WP_DISABLED: |
941 | /* We've already printed what needs to be printed. */ | |
cabd4da6 | 942 | bs->print_it = print_it_done; |
8af68e4e JK |
943 | /* Stop. */ |
944 | break; | |
945 | case WP_VALUE_CHANGED: | |
946 | /* Stop. */ | |
947 | break; | |
948 | case WP_VALUE_NOT_CHANGED: | |
949 | /* Don't stop. */ | |
cabd4da6 JK |
950 | bs->print_it = print_it_noop; |
951 | bs->stop = 0; | |
bd5635a1 | 952 | continue; |
8af68e4e JK |
953 | default: |
954 | /* Can't happen. */ | |
955 | /* FALLTHROUGH */ | |
956 | case 0: | |
957 | /* Error from catch_errors. */ | |
958 | b->enable = disabled; | |
959 | printf_filtered ("Watchpoint %d disabled.\n", b->number); | |
960 | /* We've already printed what needs to be printed. */ | |
cabd4da6 | 961 | bs->print_it = print_it_done; |
8af68e4e JK |
962 | /* Stop. */ |
963 | break; | |
bd5635a1 RP |
964 | } |
965 | } | |
bdbd5f50 | 966 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
967 | else |
968 | real_breakpoint = 1; | |
bdbd5f50 | 969 | #endif |
bd5635a1 RP |
970 | |
971 | if (b->frame && b->frame != frame_address) | |
cabd4da6 | 972 | bs->stop = 0; |
bd5635a1 RP |
973 | else |
974 | { | |
bdbd5f50 | 975 | int value_is_zero; |
bd5635a1 RP |
976 | |
977 | if (b->cond) | |
978 | { | |
979 | /* Need to select the frame, with all that implies | |
980 | so that the conditions will have the right context. */ | |
981 | select_frame (get_current_frame (), 0); | |
bdbd5f50 JG |
982 | value_is_zero |
983 | = catch_errors (breakpoint_cond_eval, (char *)(b->cond), | |
06b6c733 JG |
984 | "Error in testing breakpoint condition:\n"); |
985 | /* FIXME-someday, should give breakpoint # */ | |
bd5635a1 RP |
986 | free_all_values (); |
987 | } | |
bdbd5f50 | 988 | if (b->cond && value_is_zero) |
bd5635a1 | 989 | { |
cabd4da6 | 990 | bs->stop = 0; |
bd5635a1 RP |
991 | } |
992 | else if (b->ignore_count > 0) | |
993 | { | |
994 | b->ignore_count--; | |
cabd4da6 | 995 | bs->stop = 0; |
bd5635a1 RP |
996 | } |
997 | else | |
998 | { | |
999 | /* We will stop here */ | |
30875e1c | 1000 | if (b->disposition == disable) |
bd5635a1 RP |
1001 | b->enable = disabled; |
1002 | bs->commands = b->commands; | |
1003 | if (b->silent) | |
cabd4da6 | 1004 | bs->print = 0; |
2d313932 | 1005 | if (bs->commands && STREQ ("silent", bs->commands->line)) |
bd5635a1 RP |
1006 | { |
1007 | bs->commands = bs->commands->next; | |
cabd4da6 | 1008 | bs->print = 0; |
bd5635a1 RP |
1009 | } |
1010 | } | |
1011 | } | |
cabd4da6 JK |
1012 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
1013 | if (bs->stop == 0 || bs->print == 0) | |
1014 | bs->print_it = print_it_noop; | |
bd5635a1 RP |
1015 | } |
1016 | ||
1017 | bs->next = NULL; /* Terminate the chain */ | |
1018 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
cabd4da6 | 1019 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1020 | if (bs) |
1021 | { | |
bd5635a1 RP |
1022 | if (real_breakpoint) |
1023 | { | |
1024 | *pc = bp_addr; | |
1025 | #if defined (SHIFT_INST_REGS) | |
1026 | { | |
1027 | CORE_ADDR pc = read_register (PC_REGNUM); | |
1028 | CORE_ADDR npc = read_register (NPC_REGNUM); | |
1029 | if (pc != npc) | |
1030 | { | |
1031 | write_register (NNPC_REGNUM, npc); | |
1032 | write_register (NPC_REGNUM, pc); | |
1033 | } | |
1034 | } | |
1035 | #else /* No SHIFT_INST_REGS. */ | |
1036 | write_pc (bp_addr); | |
1037 | #endif /* No SHIFT_INST_REGS. */ | |
1038 | } | |
bd5635a1 | 1039 | } |
cabd4da6 | 1040 | #endif /* DECR_PC_AFTER_BREAK != 0. */ |
bd5635a1 RP |
1041 | return bs; |
1042 | } | |
cabd4da6 JK |
1043 | \f |
1044 | /* Tell what to do about this bpstat. */ | |
1045 | enum bpstat_what | |
1046 | bpstat_what (bs) | |
1047 | bpstat bs; | |
1048 | { | |
1049 | /* Classify each bpstat as one of the following. */ | |
1050 | enum class { | |
1051 | /* There was a watchpoint, but we're not stopping. */ | |
1052 | wp_nostop = 0, | |
1053 | ||
1054 | /* There was a watchpoint, stop but don't print. */ | |
1055 | wp_silent, | |
1056 | ||
1057 | /* There was a watchpoint, stop and print. */ | |
1058 | wp_noisy, | |
1059 | ||
1060 | /* There was a breakpoint but we're not stopping. */ | |
1061 | bp_nostop, | |
1062 | ||
1063 | /* There was a breakpoint, stop but don't print. */ | |
1064 | bp_silent, | |
1065 | ||
1066 | /* There was a breakpoint, stop and print. */ | |
1067 | bp_noisy, | |
1068 | ||
1069 | /* We hit the longjmp breakpoint. */ | |
1070 | long_jump, | |
1071 | ||
1072 | /* We hit the longjmp_resume breakpoint. */ | |
1073 | long_resume, | |
1074 | ||
1075 | /* This is just used to count how many enums there are. */ | |
1076 | class_last | |
1077 | }; | |
1078 | ||
1079 | /* Here is the table which drives this routine. So that we can | |
1080 | format it pretty, we define some abbreviations for the | |
1081 | enum bpstat_what codes. */ | |
1082 | #define keep_c BPSTAT_WHAT_KEEP_CHECKING | |
1083 | #define stop_s BPSTAT_WHAT_STOP_SILENT | |
1084 | #define stop_n BPSTAT_WHAT_STOP_NOISY | |
1085 | #define single BPSTAT_WHAT_SINGLE | |
1086 | #define setlr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
1087 | #define clrlr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
1088 | #define clrlrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
1089 | /* "Can't happen." Might want to print an error message. | |
1090 | abort() is not out of the question, but chances are GDB is just | |
1091 | a bit confused, not unusable. */ | |
1092 | #define err BPSTAT_WHAT_STOP_NOISY | |
1093 | ||
1094 | /* Given an old action and a class, come up with a new action. */ | |
1095 | static const enum bpstat_what | |
1096 | table[(int)class_last][(int)BPSTAT_WHAT_LAST] = | |
1097 | { | |
1098 | /* old action */ | |
1099 | /* keep_c stop_s stop_n single setlr clrlr clrlrs */ | |
1100 | ||
1101 | /*wp_nostop*/ {keep_c, stop_s, stop_n, single, setlr , clrlr , clrlrs}, | |
1102 | /*wp_silent*/ {stop_s, stop_s, stop_n, stop_s, stop_s, stop_s, stop_s}, | |
1103 | /*wp_noisy*/ {stop_n, stop_n, stop_n, stop_n, stop_n, stop_n, stop_n}, | |
1104 | /*bp_nostop*/ {single, stop_s, stop_n, single, setlr , clrlrs, clrlrs}, | |
1105 | /*bp_silent*/ {stop_s, stop_s, stop_n, stop_s, stop_s, stop_s, stop_s}, | |
1106 | /*bp_noisy*/ {stop_n, stop_n, stop_n, stop_n, stop_n, stop_n, stop_n}, | |
1107 | /*long_jump*/ {setlr , stop_s, stop_n, setlr , err , err , err }, | |
1108 | /*long_resume*/ {clrlr , stop_s, stop_n, clrlrs, err , err , err } | |
1109 | }; | |
1110 | #undef keep_c | |
1111 | #undef stop_s | |
1112 | #undef stop_n | |
1113 | #undef single | |
1114 | #undef setlr | |
1115 | #undef clrlr | |
1116 | #undef clrlrs | |
1117 | #undef err | |
1118 | enum bpstat_what current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
1119 | ||
1120 | for (; bs != NULL; bs = bs->next) | |
1121 | { | |
1122 | enum class bs_class; | |
1123 | if (bs->breakpoint_at == NULL) | |
1124 | /* I suspect this can happen if it was a momentary breakpoint | |
1125 | which has since been deleted. */ | |
1126 | continue; | |
1127 | switch (bs->breakpoint_at->type) | |
1128 | { | |
1129 | case bp_breakpoint: | |
1130 | case bp_until: | |
1131 | case bp_finish: | |
1132 | if (bs->stop) | |
1133 | { | |
1134 | if (bs->print) | |
1135 | bs_class = bp_noisy; | |
1136 | else | |
1137 | bs_class = bp_silent; | |
1138 | } | |
1139 | else | |
1140 | bs_class = bp_nostop; | |
1141 | break; | |
1142 | case bp_watchpoint: | |
1143 | if (bs->stop) | |
1144 | { | |
1145 | if (bs->print) | |
1146 | bs_class = wp_noisy; | |
1147 | else | |
1148 | bs_class = wp_silent; | |
1149 | } | |
1150 | else | |
1151 | bs_class = wp_nostop; | |
1152 | break; | |
1153 | case bp_longjmp: | |
1154 | bs_class = long_jump; | |
1155 | break; | |
1156 | case bp_longjmp_resume: | |
1157 | bs_class = long_resume; | |
1158 | break; | |
1159 | } | |
1160 | current_action = table[(int)bs_class][(int)current_action]; | |
1161 | } | |
1162 | return current_action; | |
1163 | } | |
bd5635a1 | 1164 | |
30875e1c SG |
1165 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
1166 | without hardware support). This isn't related to a specific bpstat, | |
1167 | just to things like whether watchpoints are set. */ | |
1168 | ||
bd5635a1 RP |
1169 | int |
1170 | bpstat_should_step () | |
1171 | { | |
1172 | struct breakpoint *b; | |
1173 | ALL_BREAKPOINTS (b) | |
30875e1c | 1174 | if (b->enable == enabled && b->type == bp_watchpoint) |
bd5635a1 RP |
1175 | return 1; |
1176 | return 0; | |
1177 | } | |
1178 | \f | |
1179 | /* Print information on breakpoint number BNUM, or -1 if all. | |
1180 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
1181 | is nonzero, process only watchpoints. */ | |
1182 | ||
1183 | static void | |
c8950965 | 1184 | breakpoint_1 (bnum, allflag) |
bd5635a1 | 1185 | int bnum; |
80ba48f5 | 1186 | int allflag; |
bd5635a1 RP |
1187 | { |
1188 | register struct breakpoint *b; | |
1189 | register struct command_line *l; | |
1190 | register struct symbol *sym; | |
1191 | CORE_ADDR last_addr = (CORE_ADDR)-1; | |
30875e1c SG |
1192 | int found_a_breakpoint = 0; |
1193 | static char *bptypes[] = {"breakpoint", "until", "finish", "watchpoint", | |
1194 | "longjmp", "longjmp resume"}; | |
80ba48f5 | 1195 | static char *bpdisps[] = {"del", "dis", "keep"}; |
30875e1c | 1196 | static char bpenables[] = "ny"; |
0a62ff36 | 1197 | char wrap_indent[80]; |
30875e1c SG |
1198 | |
1199 | if (!breakpoint_chain) | |
1200 | { | |
1201 | printf_filtered ("No breakpoints or watchpoints.\n"); | |
1202 | return; | |
1203 | } | |
bd5635a1 RP |
1204 | |
1205 | ALL_BREAKPOINTS (b) | |
30875e1c SG |
1206 | if (bnum == -1 |
1207 | || bnum == b->number) | |
bd5635a1 | 1208 | { |
80ba48f5 SG |
1209 | /* We only print out user settable breakpoints unless the allflag is set. */ |
1210 | if (!allflag | |
1211 | && b->type != bp_breakpoint | |
1212 | && b->type != bp_watchpoint) | |
1213 | continue; | |
1214 | ||
30875e1c | 1215 | if (!found_a_breakpoint++) |
80ba48f5 | 1216 | printf_filtered ("Num Type Disp Enb %sWhat\n", |
30875e1c SG |
1217 | addressprint ? "Address " : ""); |
1218 | ||
80ba48f5 | 1219 | printf_filtered ("%-3d %-14s %-4s %-3c ", |
30875e1c | 1220 | b->number, |
423e9664 SG |
1221 | bptypes[(int)b->type], |
1222 | bpdisps[(int)b->disposition], | |
1223 | bpenables[(int)b->enable]); | |
0a62ff36 JK |
1224 | strcpy (wrap_indent, " "); |
1225 | if (addressprint) | |
1226 | strcat (wrap_indent, " "); | |
30875e1c | 1227 | switch (b->type) |
bd5635a1 | 1228 | { |
30875e1c SG |
1229 | case bp_watchpoint: |
1230 | print_expression (b->exp, stdout); | |
1231 | break; | |
1232 | case bp_breakpoint: | |
80ba48f5 SG |
1233 | case bp_until: |
1234 | case bp_finish: | |
1235 | case bp_longjmp: | |
1236 | case bp_longjmp_resume: | |
bd5635a1 | 1237 | if (addressprint) |
30875e1c | 1238 | printf_filtered ("%s ", local_hex_string_custom(b->address, "08")); |
bd5635a1 RP |
1239 | |
1240 | last_addr = b->address; | |
1241 | if (b->symtab) | |
1242 | { | |
1243 | sym = find_pc_function (b->address); | |
1244 | if (sym) | |
1245 | { | |
30875e1c | 1246 | fputs_filtered ("in ", stdout); |
2d313932 | 1247 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stdout); |
0a62ff36 | 1248 | wrap_here (wrap_indent); |
bd5635a1 RP |
1249 | fputs_filtered (" at ", stdout); |
1250 | } | |
1251 | fputs_filtered (b->symtab->filename, stdout); | |
1252 | printf_filtered (":%d", b->line_number); | |
1253 | } | |
1254 | else | |
bdbd5f50 | 1255 | print_address_symbolic (b->address, stdout, demangle, " "); |
bd5635a1 RP |
1256 | } |
1257 | ||
1258 | printf_filtered ("\n"); | |
1259 | ||
1260 | if (b->frame) | |
d3b9c0df JG |
1261 | printf_filtered ("\tstop only in stack frame at %s\n", |
1262 | local_hex_string(b->frame)); | |
bd5635a1 RP |
1263 | if (b->cond) |
1264 | { | |
1265 | printf_filtered ("\tstop only if "); | |
1266 | print_expression (b->cond, stdout); | |
1267 | printf_filtered ("\n"); | |
1268 | } | |
1269 | if (b->ignore_count) | |
1270 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
1271 | if ((l = b->commands)) | |
1272 | while (l) | |
1273 | { | |
1274 | fputs_filtered ("\t", stdout); | |
1275 | fputs_filtered (l->line, stdout); | |
1276 | fputs_filtered ("\n", stdout); | |
1277 | l = l->next; | |
1278 | } | |
1279 | } | |
1280 | ||
30875e1c SG |
1281 | if (!found_a_breakpoint |
1282 | && bnum != -1) | |
1283 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); | |
1284 | else | |
1285 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
1286 | that a comparison of an unsigned with -1 is always false. */ | |
1287 | if (last_addr != (CORE_ADDR)-1) | |
1288 | set_next_address (last_addr); | |
bd5635a1 RP |
1289 | } |
1290 | ||
bdbd5f50 | 1291 | /* ARGSUSED */ |
bd5635a1 RP |
1292 | static void |
1293 | breakpoints_info (bnum_exp, from_tty) | |
1294 | char *bnum_exp; | |
1295 | int from_tty; | |
1296 | { | |
1297 | int bnum = -1; | |
1298 | ||
1299 | if (bnum_exp) | |
1300 | bnum = parse_and_eval_address (bnum_exp); | |
1301 | ||
c8950965 | 1302 | breakpoint_1 (bnum, 0); |
80ba48f5 SG |
1303 | } |
1304 | ||
9b280a7f JG |
1305 | #if MAINTENANCE_CMDS |
1306 | ||
80ba48f5 SG |
1307 | /* ARGSUSED */ |
1308 | static void | |
9b280a7f | 1309 | maintenance_info_breakpoints (bnum_exp, from_tty) |
80ba48f5 SG |
1310 | char *bnum_exp; |
1311 | int from_tty; | |
1312 | { | |
1313 | int bnum = -1; | |
1314 | ||
1315 | if (bnum_exp) | |
1316 | bnum = parse_and_eval_address (bnum_exp); | |
1317 | ||
c8950965 | 1318 | breakpoint_1 (bnum, 1); |
bd5635a1 RP |
1319 | } |
1320 | ||
9b280a7f JG |
1321 | #endif |
1322 | ||
bd5635a1 RP |
1323 | /* Print a message describing any breakpoints set at PC. */ |
1324 | ||
1325 | static void | |
1326 | describe_other_breakpoints (pc) | |
1327 | register CORE_ADDR pc; | |
1328 | { | |
1329 | register int others = 0; | |
1330 | register struct breakpoint *b; | |
1331 | ||
1332 | ALL_BREAKPOINTS (b) | |
1333 | if (b->address == pc) | |
1334 | others++; | |
1335 | if (others > 0) | |
1336 | { | |
2d313932 | 1337 | printf ("Note: breakpoint%s ", (others > 1) ? "s" : ""); |
bd5635a1 RP |
1338 | ALL_BREAKPOINTS (b) |
1339 | if (b->address == pc) | |
1340 | { | |
1341 | others--; | |
2d313932 JK |
1342 | printf ("%d%s%s ", |
1343 | b->number, | |
1344 | (b->enable == disabled) ? " (disabled)" : "", | |
1345 | (others > 1) ? "," : ((others == 1) ? " and" : "")); | |
bd5635a1 | 1346 | } |
2d313932 | 1347 | printf ("also set at pc %s.\n", local_hex_string(pc)); |
bd5635a1 RP |
1348 | } |
1349 | } | |
1350 | \f | |
1351 | /* Set the default place to put a breakpoint | |
1352 | for the `break' command with no arguments. */ | |
1353 | ||
1354 | void | |
1355 | set_default_breakpoint (valid, addr, symtab, line) | |
1356 | int valid; | |
1357 | CORE_ADDR addr; | |
1358 | struct symtab *symtab; | |
1359 | int line; | |
1360 | { | |
1361 | default_breakpoint_valid = valid; | |
1362 | default_breakpoint_address = addr; | |
1363 | default_breakpoint_symtab = symtab; | |
1364 | default_breakpoint_line = line; | |
1365 | } | |
1366 | ||
1367 | /* Rescan breakpoints at address ADDRESS, | |
1368 | marking the first one as "first" and any others as "duplicates". | |
1369 | This is so that the bpt instruction is only inserted once. */ | |
1370 | ||
1371 | static void | |
1372 | check_duplicates (address) | |
1373 | CORE_ADDR address; | |
1374 | { | |
1375 | register struct breakpoint *b; | |
1376 | register int count = 0; | |
1377 | ||
30875e1c | 1378 | if (address == 0) /* Watchpoints are uninteresting */ |
f266e564 JK |
1379 | return; |
1380 | ||
bd5635a1 RP |
1381 | ALL_BREAKPOINTS (b) |
1382 | if (b->enable != disabled && b->address == address) | |
1383 | { | |
1384 | count++; | |
1385 | b->duplicate = count > 1; | |
1386 | } | |
1387 | } | |
1388 | ||
1389 | /* Low level routine to set a breakpoint. | |
1390 | Takes as args the three things that every breakpoint must have. | |
1391 | Returns the breakpoint object so caller can set other things. | |
1392 | Does not set the breakpoint number! | |
f266e564 JK |
1393 | Does not print anything. |
1394 | ||
1395 | ==> This routine should not be called if there is a chance of later | |
1396 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
1397 | your arguments BEFORE calling this routine! */ | |
bd5635a1 RP |
1398 | |
1399 | static struct breakpoint * | |
1400 | set_raw_breakpoint (sal) | |
1401 | struct symtab_and_line sal; | |
1402 | { | |
1403 | register struct breakpoint *b, *b1; | |
1404 | ||
1405 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4ed3a9ea | 1406 | memset (b, 0, sizeof (*b)); |
bd5635a1 RP |
1407 | b->address = sal.pc; |
1408 | b->symtab = sal.symtab; | |
1409 | b->line_number = sal.line; | |
1410 | b->enable = enabled; | |
1411 | b->next = 0; | |
1412 | b->silent = 0; | |
1413 | b->ignore_count = 0; | |
1414 | b->commands = NULL; | |
30875e1c | 1415 | b->frame = 0; |
bd5635a1 RP |
1416 | |
1417 | /* Add this breakpoint to the end of the chain | |
1418 | so that a list of breakpoints will come out in order | |
1419 | of increasing numbers. */ | |
1420 | ||
1421 | b1 = breakpoint_chain; | |
1422 | if (b1 == 0) | |
1423 | breakpoint_chain = b; | |
1424 | else | |
1425 | { | |
1426 | while (b1->next) | |
1427 | b1 = b1->next; | |
1428 | b1->next = b; | |
1429 | } | |
1430 | ||
1431 | check_duplicates (sal.pc); | |
1432 | ||
1433 | return b; | |
1434 | } | |
1435 | ||
30875e1c | 1436 | static void |
80ba48f5 | 1437 | create_longjmp_breakpoint(func_name) |
30875e1c | 1438 | char *func_name; |
30875e1c | 1439 | { |
30875e1c SG |
1440 | struct symtab_and_line sal; |
1441 | struct breakpoint *b; | |
80ba48f5 | 1442 | static int internal_breakpoint_number = -1; |
30875e1c | 1443 | |
30875e1c SG |
1444 | if (func_name != NULL) |
1445 | { | |
1446 | struct minimal_symbol *m; | |
1447 | ||
1448 | m = lookup_minimal_symbol(func_name, (struct objfile *)NULL); | |
1449 | if (m) | |
2d313932 | 1450 | sal.pc = SYMBOL_VALUE_ADDRESS (m); |
30875e1c SG |
1451 | else |
1452 | return; | |
1453 | } | |
1454 | else | |
1455 | sal.pc = 0; | |
1456 | ||
1457 | sal.symtab = NULL; | |
1458 | sal.line = 0; | |
30875e1c | 1459 | |
80ba48f5 | 1460 | b = set_raw_breakpoint(sal); |
30875e1c SG |
1461 | if (!b) return; |
1462 | ||
80ba48f5 | 1463 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; |
30875e1c SG |
1464 | b->disposition = donttouch; |
1465 | b->enable = disabled; | |
1466 | b->silent = 1; | |
80ba48f5 SG |
1467 | if (func_name) |
1468 | b->addr_string = strsave(func_name); | |
1469 | b->number = internal_breakpoint_number--; | |
30875e1c | 1470 | } |
30875e1c SG |
1471 | |
1472 | /* Call this routine when stepping and nexting to enable a breakpoint if we do | |
1473 | a longjmp(). When we hit that breakpoint, call | |
1474 | set_longjmp_resume_breakpoint() to figure out where we are going. */ | |
1475 | ||
1476 | void | |
1477 | enable_longjmp_breakpoint() | |
1478 | { | |
80ba48f5 SG |
1479 | register struct breakpoint *b; |
1480 | ||
1481 | ALL_BREAKPOINTS (b) | |
1482 | if (b->type == bp_longjmp) | |
9b280a7f JG |
1483 | { |
1484 | b->enable = enabled; | |
1485 | check_duplicates (b->address); | |
1486 | } | |
30875e1c SG |
1487 | } |
1488 | ||
1489 | void | |
1490 | disable_longjmp_breakpoint() | |
1491 | { | |
80ba48f5 SG |
1492 | register struct breakpoint *b; |
1493 | ||
1494 | ALL_BREAKPOINTS (b) | |
9b280a7f | 1495 | if ( b->type == bp_longjmp |
80ba48f5 | 1496 | || b->type == bp_longjmp_resume) |
9b280a7f JG |
1497 | { |
1498 | b->enable = disabled; | |
1499 | check_duplicates (b->address); | |
1500 | } | |
30875e1c SG |
1501 | } |
1502 | ||
1503 | /* Call this after hitting the longjmp() breakpoint. Use this to set a new | |
1504 | breakpoint at the target of the jmp_buf. | |
80ba48f5 SG |
1505 | |
1506 | FIXME - This ought to be done by setting a temporary breakpoint that gets | |
1507 | deleted automatically... | |
30875e1c SG |
1508 | */ |
1509 | ||
1510 | void | |
1511 | set_longjmp_resume_breakpoint(pc, frame) | |
1512 | CORE_ADDR pc; | |
1513 | FRAME frame; | |
1514 | { | |
80ba48f5 SG |
1515 | register struct breakpoint *b; |
1516 | ||
1517 | ALL_BREAKPOINTS (b) | |
1518 | if (b->type == bp_longjmp_resume) | |
1519 | { | |
1520 | b->address = pc; | |
1521 | b->enable = enabled; | |
1522 | if (frame != NULL) | |
1523 | b->frame = FRAME_FP(frame); | |
1524 | else | |
1525 | b->frame = 0; | |
9b280a7f | 1526 | check_duplicates (b->address); |
80ba48f5 SG |
1527 | return; |
1528 | } | |
30875e1c SG |
1529 | } |
1530 | ||
bd5635a1 RP |
1531 | /* Set a breakpoint that will evaporate an end of command |
1532 | at address specified by SAL. | |
1533 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
1534 | ||
30875e1c SG |
1535 | struct breakpoint * |
1536 | set_momentary_breakpoint (sal, frame, type) | |
bd5635a1 RP |
1537 | struct symtab_and_line sal; |
1538 | FRAME frame; | |
30875e1c | 1539 | enum bptype type; |
bd5635a1 RP |
1540 | { |
1541 | register struct breakpoint *b; | |
1542 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
1543 | b->type = type; |
1544 | b->enable = enabled; | |
1545 | b->disposition = donttouch; | |
bd5635a1 | 1546 | b->frame = (frame ? FRAME_FP (frame) : 0); |
30875e1c | 1547 | return b; |
bd5635a1 RP |
1548 | } |
1549 | ||
30875e1c | 1550 | #if 0 |
bd5635a1 RP |
1551 | void |
1552 | clear_momentary_breakpoints () | |
1553 | { | |
1554 | register struct breakpoint *b; | |
1555 | ALL_BREAKPOINTS (b) | |
30875e1c | 1556 | if (b->disposition == delete) |
bd5635a1 RP |
1557 | { |
1558 | delete_breakpoint (b); | |
1559 | break; | |
1560 | } | |
1561 | } | |
30875e1c | 1562 | #endif |
bd5635a1 RP |
1563 | \f |
1564 | /* Tell the user we have just set a breakpoint B. */ | |
1565 | static void | |
1566 | mention (b) | |
1567 | struct breakpoint *b; | |
1568 | { | |
30875e1c | 1569 | switch (b->type) |
bd5635a1 | 1570 | { |
30875e1c | 1571 | case bp_watchpoint: |
bd5635a1 RP |
1572 | printf_filtered ("Watchpoint %d: ", b->number); |
1573 | print_expression (b->exp, stdout); | |
30875e1c SG |
1574 | break; |
1575 | case bp_breakpoint: | |
d3b9c0df JG |
1576 | printf_filtered ("Breakpoint %d at %s", b->number, |
1577 | local_hex_string(b->address)); | |
bd5635a1 RP |
1578 | if (b->symtab) |
1579 | printf_filtered (": file %s, line %d.", | |
1580 | b->symtab->filename, b->line_number); | |
51b57ded FF |
1581 | break; |
1582 | case bp_until: | |
1583 | case bp_finish: | |
1584 | case bp_longjmp: | |
1585 | case bp_longjmp_resume: | |
1586 | break; | |
bd5635a1 RP |
1587 | } |
1588 | printf_filtered ("\n"); | |
1589 | } | |
1590 | ||
1591 | #if 0 | |
1592 | /* Nobody calls this currently. */ | |
1593 | /* Set a breakpoint from a symtab and line. | |
1594 | If TEMPFLAG is nonzero, it is a temporary breakpoint. | |
1595 | ADDR_STRING is a malloc'd string holding the name of where we are | |
1596 | setting the breakpoint. This is used later to re-set it after the | |
1597 | program is relinked and symbols are reloaded. | |
1598 | Print the same confirmation messages that the breakpoint command prints. */ | |
1599 | ||
1600 | void | |
1601 | set_breakpoint (s, line, tempflag, addr_string) | |
1602 | struct symtab *s; | |
1603 | int line; | |
1604 | int tempflag; | |
1605 | char *addr_string; | |
1606 | { | |
1607 | register struct breakpoint *b; | |
1608 | struct symtab_and_line sal; | |
1609 | ||
1610 | sal.symtab = s; | |
1611 | sal.line = line; | |
30875e1c SG |
1612 | sal.pc = 0; |
1613 | resolve_sal_pc (&sal); /* Might error out */ | |
1614 | describe_other_breakpoints (sal.pc); | |
bd5635a1 | 1615 | |
30875e1c SG |
1616 | b = set_raw_breakpoint (sal); |
1617 | set_breakpoint_count (breakpoint_count + 1); | |
1618 | b->number = breakpoint_count; | |
1619 | b->type = bp_breakpoint; | |
1620 | b->cond = 0; | |
1621 | b->addr_string = addr_string; | |
1622 | b->enable = enabled; | |
1623 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 | 1624 | |
30875e1c | 1625 | mention (b); |
bd5635a1 | 1626 | } |
30875e1c | 1627 | #endif /* 0 */ |
bd5635a1 RP |
1628 | \f |
1629 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
1630 | and make it temporary if TEMPFLAG is nonzero. */ | |
1631 | ||
1632 | static void | |
1633 | break_command_1 (arg, tempflag, from_tty) | |
1634 | char *arg; | |
1635 | int tempflag, from_tty; | |
1636 | { | |
1637 | struct symtabs_and_lines sals; | |
1638 | struct symtab_and_line sal; | |
1639 | register struct expression *cond = 0; | |
1640 | register struct breakpoint *b; | |
1641 | ||
1642 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
1643 | char *cond_start = NULL; | |
1644 | char *cond_end; | |
1645 | /* Pointers in arg to the start, and one past the end, | |
1646 | of the address part. */ | |
1647 | char *addr_start = NULL; | |
1648 | char *addr_end; | |
1649 | ||
1650 | int i; | |
bd5635a1 RP |
1651 | |
1652 | sals.sals = NULL; | |
1653 | sals.nelts = 0; | |
1654 | ||
1655 | sal.line = sal.pc = sal.end = 0; | |
1656 | sal.symtab = 0; | |
1657 | ||
1658 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
1659 | ||
1660 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
1661 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
1662 | { | |
1663 | if (default_breakpoint_valid) | |
1664 | { | |
1665 | sals.sals = (struct symtab_and_line *) | |
1666 | xmalloc (sizeof (struct symtab_and_line)); | |
1667 | sal.pc = default_breakpoint_address; | |
1668 | sal.line = default_breakpoint_line; | |
1669 | sal.symtab = default_breakpoint_symtab; | |
1670 | sals.sals[0] = sal; | |
1671 | sals.nelts = 1; | |
1672 | } | |
1673 | else | |
1674 | error ("No default breakpoint address now."); | |
1675 | } | |
1676 | else | |
1677 | { | |
1678 | addr_start = arg; | |
1679 | ||
1680 | /* Force almost all breakpoints to be in terms of the | |
1681 | current_source_symtab (which is decode_line_1's default). This | |
1682 | should produce the results we want almost all of the time while | |
1683 | leaving default_breakpoint_* alone. */ | |
1684 | if (default_breakpoint_valid | |
1685 | && (!current_source_symtab | |
1686 | || (arg && (*arg == '+' || *arg == '-')))) | |
1687 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
1688 | default_breakpoint_line); | |
1689 | else | |
1690 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0); | |
1691 | ||
1692 | addr_end = arg; | |
1693 | } | |
1694 | ||
1695 | if (! sals.nelts) | |
1696 | return; | |
1697 | ||
30875e1c SG |
1698 | /* Resolve all line numbers to PC's, and verify that conditions |
1699 | can be parsed, before setting any breakpoints. */ | |
bd5635a1 RP |
1700 | for (i = 0; i < sals.nelts; i++) |
1701 | { | |
30875e1c | 1702 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
1703 | |
1704 | while (arg && *arg) | |
1705 | { | |
1706 | if (arg[0] == 'i' && arg[1] == 'f' | |
1707 | && (arg[2] == ' ' || arg[2] == '\t')) | |
1708 | { | |
1709 | arg += 2; | |
1710 | cond_start = arg; | |
30875e1c | 1711 | cond = parse_exp_1 (&arg, block_for_pc (sals.sals[i].pc), 0); |
bd5635a1 RP |
1712 | cond_end = arg; |
1713 | } | |
1714 | else | |
1715 | error ("Junk at end of arguments."); | |
1716 | } | |
bd5635a1 RP |
1717 | } |
1718 | ||
30875e1c | 1719 | /* Now set all the breakpoints. */ |
bd5635a1 RP |
1720 | for (i = 0; i < sals.nelts; i++) |
1721 | { | |
1722 | sal = sals.sals[i]; | |
1723 | ||
1724 | if (from_tty) | |
1725 | describe_other_breakpoints (sal.pc); | |
1726 | ||
1727 | b = set_raw_breakpoint (sal); | |
1728 | set_breakpoint_count (breakpoint_count + 1); | |
1729 | b->number = breakpoint_count; | |
30875e1c | 1730 | b->type = bp_breakpoint; |
bd5635a1 | 1731 | b->cond = cond; |
0a97f6c4 JK |
1732 | |
1733 | /* FIXME: We should add the filename if this is a static function | |
1734 | and probably if it is a line number (the line numbers could | |
1735 | have changed when we re-read symbols; possibly better to disable | |
1736 | the breakpoint in that case). */ | |
bd5635a1 RP |
1737 | if (addr_start) |
1738 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
1739 | if (cond_start) | |
1740 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
1741 | ||
30875e1c SG |
1742 | b->enable = enabled; |
1743 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 RP |
1744 | |
1745 | mention (b); | |
1746 | } | |
1747 | ||
1748 | if (sals.nelts > 1) | |
1749 | { | |
2d313932 JK |
1750 | printf ("Multiple breakpoints were set.\n"); |
1751 | printf ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 1752 | } |
c8950965 | 1753 | free ((PTR)sals.sals); |
bd5635a1 RP |
1754 | } |
1755 | ||
30875e1c SG |
1756 | /* Helper function for break_command_1 and disassemble_command. */ |
1757 | ||
1758 | void | |
1759 | resolve_sal_pc (sal) | |
1760 | struct symtab_and_line *sal; | |
1761 | { | |
1762 | CORE_ADDR pc; | |
1763 | ||
1764 | if (sal->pc == 0 && sal->symtab != 0) | |
1765 | { | |
1766 | pc = find_line_pc (sal->symtab, sal->line); | |
1767 | if (pc == 0) | |
1768 | error ("No line %d in file \"%s\".", | |
1769 | sal->line, sal->symtab->filename); | |
1770 | sal->pc = pc; | |
1771 | } | |
1772 | } | |
1773 | ||
bd5635a1 RP |
1774 | void |
1775 | break_command (arg, from_tty) | |
1776 | char *arg; | |
1777 | int from_tty; | |
1778 | { | |
1779 | break_command_1 (arg, 0, from_tty); | |
1780 | } | |
1781 | ||
1782 | static void | |
1783 | tbreak_command (arg, from_tty) | |
1784 | char *arg; | |
1785 | int from_tty; | |
1786 | { | |
1787 | break_command_1 (arg, 1, from_tty); | |
1788 | } | |
1789 | ||
bdbd5f50 | 1790 | /* ARGSUSED */ |
bd5635a1 RP |
1791 | static void |
1792 | watch_command (arg, from_tty) | |
1793 | char *arg; | |
1794 | int from_tty; | |
1795 | { | |
1796 | struct breakpoint *b; | |
1797 | struct symtab_and_line sal; | |
f266e564 JK |
1798 | struct expression *exp; |
1799 | struct block *exp_valid_block; | |
1800 | struct value *val; | |
bd5635a1 | 1801 | |
30875e1c | 1802 | sal.pc = 0; |
bd5635a1 RP |
1803 | sal.symtab = NULL; |
1804 | sal.line = 0; | |
1805 | ||
f266e564 JK |
1806 | /* Parse arguments. */ |
1807 | innermost_block = NULL; | |
d3b9c0df | 1808 | exp = parse_expression (arg); |
f266e564 JK |
1809 | exp_valid_block = innermost_block; |
1810 | val = evaluate_expression (exp); | |
1811 | release_value (val); | |
2d313932 JK |
1812 | if (VALUE_LAZY (val)) |
1813 | value_fetch_lazy (val); | |
f266e564 JK |
1814 | |
1815 | /* Now set up the breakpoint. */ | |
bd5635a1 RP |
1816 | b = set_raw_breakpoint (sal); |
1817 | set_breakpoint_count (breakpoint_count + 1); | |
1818 | b->number = breakpoint_count; | |
30875e1c SG |
1819 | b->type = bp_watchpoint; |
1820 | b->disposition = donttouch; | |
f266e564 JK |
1821 | b->exp = exp; |
1822 | b->exp_valid_block = exp_valid_block; | |
1823 | b->val = val; | |
bd5635a1 RP |
1824 | b->cond = 0; |
1825 | b->cond_string = NULL; | |
0eaaa46a | 1826 | b->exp_string = savestring (arg, strlen (arg)); |
bd5635a1 RP |
1827 | mention (b); |
1828 | } | |
1829 | \f | |
1830 | /* | |
1831 | * Helper routine for the until_command routine in infcmd.c. Here | |
1832 | * because it uses the mechanisms of breakpoints. | |
1833 | */ | |
bdbd5f50 | 1834 | /* ARGSUSED */ |
bd5635a1 RP |
1835 | void |
1836 | until_break_command (arg, from_tty) | |
1837 | char *arg; | |
1838 | int from_tty; | |
1839 | { | |
1840 | struct symtabs_and_lines sals; | |
1841 | struct symtab_and_line sal; | |
1842 | FRAME prev_frame = get_prev_frame (selected_frame); | |
30875e1c SG |
1843 | struct breakpoint *breakpoint; |
1844 | struct cleanup *old_chain; | |
bd5635a1 RP |
1845 | |
1846 | clear_proceed_status (); | |
1847 | ||
1848 | /* Set a breakpoint where the user wants it and at return from | |
1849 | this function */ | |
1850 | ||
1851 | if (default_breakpoint_valid) | |
1852 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
1853 | default_breakpoint_line); | |
1854 | else | |
1855 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0); | |
1856 | ||
1857 | if (sals.nelts != 1) | |
1858 | error ("Couldn't get information on specified line."); | |
1859 | ||
1860 | sal = sals.sals[0]; | |
c8950965 | 1861 | free ((PTR)sals.sals); /* malloc'd, so freed */ |
bd5635a1 RP |
1862 | |
1863 | if (*arg) | |
1864 | error ("Junk at end of arguments."); | |
1865 | ||
30875e1c | 1866 | resolve_sal_pc (&sal); |
bd5635a1 | 1867 | |
30875e1c | 1868 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
bd5635a1 | 1869 | |
30875e1c SG |
1870 | old_chain = make_cleanup(delete_breakpoint, breakpoint); |
1871 | ||
bd5635a1 RP |
1872 | /* Keep within the current frame */ |
1873 | ||
1874 | if (prev_frame) | |
1875 | { | |
1876 | struct frame_info *fi; | |
1877 | ||
1878 | fi = get_frame_info (prev_frame); | |
1879 | sal = find_pc_line (fi->pc, 0); | |
1880 | sal.pc = fi->pc; | |
30875e1c SG |
1881 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); |
1882 | make_cleanup(delete_breakpoint, breakpoint); | |
bd5635a1 RP |
1883 | } |
1884 | ||
1885 | proceed (-1, -1, 0); | |
30875e1c | 1886 | do_cleanups(old_chain); |
bd5635a1 RP |
1887 | } |
1888 | \f | |
bdbd5f50 JG |
1889 | #if 0 |
1890 | /* These aren't used; I don't konw what they were for. */ | |
bd5635a1 RP |
1891 | /* Set a breakpoint at the catch clause for NAME. */ |
1892 | static int | |
1893 | catch_breakpoint (name) | |
1894 | char *name; | |
1895 | { | |
1896 | } | |
1897 | ||
1898 | static int | |
1899 | disable_catch_breakpoint () | |
1900 | { | |
1901 | } | |
1902 | ||
1903 | static int | |
1904 | delete_catch_breakpoint () | |
1905 | { | |
1906 | } | |
1907 | ||
1908 | static int | |
1909 | enable_catch_breakpoint () | |
1910 | { | |
1911 | } | |
bdbd5f50 | 1912 | #endif /* 0 */ |
bd5635a1 RP |
1913 | |
1914 | struct sal_chain | |
1915 | { | |
1916 | struct sal_chain *next; | |
1917 | struct symtab_and_line sal; | |
1918 | }; | |
1919 | ||
bdbd5f50 JG |
1920 | #if 0 |
1921 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 RP |
1922 | /* For each catch clause identified in ARGS, run FUNCTION |
1923 | with that clause as an argument. */ | |
1924 | static struct symtabs_and_lines | |
1925 | map_catch_names (args, function) | |
1926 | char *args; | |
1927 | int (*function)(); | |
1928 | { | |
1929 | register char *p = args; | |
1930 | register char *p1; | |
1931 | struct symtabs_and_lines sals; | |
bdbd5f50 | 1932 | #if 0 |
bd5635a1 | 1933 | struct sal_chain *sal_chain = 0; |
bdbd5f50 | 1934 | #endif |
bd5635a1 RP |
1935 | |
1936 | if (p == 0) | |
1937 | error_no_arg ("one or more catch names"); | |
1938 | ||
1939 | sals.nelts = 0; | |
1940 | sals.sals = NULL; | |
1941 | ||
1942 | while (*p) | |
1943 | { | |
1944 | p1 = p; | |
1945 | /* Don't swallow conditional part. */ | |
1946 | if (p1[0] == 'i' && p1[1] == 'f' | |
1947 | && (p1[2] == ' ' || p1[2] == '\t')) | |
1948 | break; | |
1949 | ||
1950 | if (isalpha (*p1)) | |
1951 | { | |
1952 | p1++; | |
1953 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
1954 | p1++; | |
1955 | } | |
1956 | ||
1957 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
1958 | error ("Arguments must be catch names."); | |
1959 | ||
1960 | *p1 = 0; | |
1961 | #if 0 | |
1962 | if (function (p)) | |
1963 | { | |
1964 | struct sal_chain *next | |
1965 | = (struct sal_chain *)alloca (sizeof (struct sal_chain)); | |
1966 | next->next = sal_chain; | |
1967 | next->sal = get_catch_sal (p); | |
1968 | sal_chain = next; | |
1969 | goto win; | |
1970 | } | |
1971 | #endif | |
2d313932 | 1972 | printf ("No catch clause for exception %s.\n", p); |
bdbd5f50 | 1973 | #if 0 |
bd5635a1 | 1974 | win: |
bdbd5f50 | 1975 | #endif |
bd5635a1 RP |
1976 | p = p1; |
1977 | while (*p == ' ' || *p == '\t') p++; | |
1978 | } | |
1979 | } | |
bdbd5f50 | 1980 | #endif /* 0 */ |
bd5635a1 RP |
1981 | |
1982 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
1983 | ||
1984 | static struct symtabs_and_lines | |
1985 | get_catch_sals (this_level_only) | |
1986 | int this_level_only; | |
1987 | { | |
bd5635a1 | 1988 | register struct blockvector *bl; |
777bef06 | 1989 | register struct block *block; |
bd5635a1 | 1990 | int index, have_default = 0; |
777bef06 JK |
1991 | struct frame_info *fi; |
1992 | CORE_ADDR pc; | |
bd5635a1 RP |
1993 | struct symtabs_and_lines sals; |
1994 | struct sal_chain *sal_chain = 0; | |
1995 | char *blocks_searched; | |
1996 | ||
777bef06 JK |
1997 | /* Not sure whether an error message is always the correct response, |
1998 | but it's better than a core dump. */ | |
1999 | if (selected_frame == NULL) | |
2000 | error ("No selected frame."); | |
2001 | block = get_frame_block (selected_frame); | |
2002 | fi = get_frame_info (selected_frame); | |
2003 | pc = fi->pc; | |
2004 | ||
bd5635a1 RP |
2005 | sals.nelts = 0; |
2006 | sals.sals = NULL; | |
2007 | ||
2008 | if (block == 0) | |
2009 | error ("No symbol table info available.\n"); | |
2010 | ||
2011 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
2012 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4ed3a9ea | 2013 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
2014 | |
2015 | while (block != 0) | |
2016 | { | |
2017 | CORE_ADDR end = BLOCK_END (block) - 4; | |
2018 | int last_index; | |
2019 | ||
2020 | if (bl != blockvector_for_pc (end, &index)) | |
2021 | error ("blockvector blotch"); | |
2022 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
2023 | error ("blockvector botch"); | |
2024 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
2025 | index += 1; | |
2026 | ||
2027 | /* Don't print out blocks that have gone by. */ | |
2028 | while (index < last_index | |
2029 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
2030 | index++; | |
2031 | ||
2032 | while (index < last_index | |
2033 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
2034 | { | |
2035 | if (blocks_searched[index] == 0) | |
2036 | { | |
2037 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
2038 | int nsyms; | |
2039 | register int i; | |
2040 | register struct symbol *sym; | |
2041 | ||
2042 | nsyms = BLOCK_NSYMS (b); | |
2043 | ||
2044 | for (i = 0; i < nsyms; i++) | |
2045 | { | |
2046 | sym = BLOCK_SYM (b, i); | |
2d313932 | 2047 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
2048 | { |
2049 | if (have_default) | |
2050 | continue; | |
2051 | have_default = 1; | |
2052 | } | |
2053 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
2054 | { | |
2055 | struct sal_chain *next = (struct sal_chain *) | |
2056 | alloca (sizeof (struct sal_chain)); | |
2057 | next->next = sal_chain; | |
2058 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
2059 | sal_chain = next; | |
2060 | } | |
2061 | } | |
2062 | blocks_searched[index] = 1; | |
2063 | } | |
2064 | index++; | |
2065 | } | |
2066 | if (have_default) | |
2067 | break; | |
2068 | if (sal_chain && this_level_only) | |
2069 | break; | |
2070 | ||
2071 | /* After handling the function's top-level block, stop. | |
2072 | Don't continue to its superblock, the block of | |
2073 | per-file symbols. */ | |
2074 | if (BLOCK_FUNCTION (block)) | |
2075 | break; | |
2076 | block = BLOCK_SUPERBLOCK (block); | |
2077 | } | |
2078 | ||
2079 | if (sal_chain) | |
2080 | { | |
2081 | struct sal_chain *tmp_chain; | |
2082 | ||
2083 | /* Count the number of entries. */ | |
2084 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
2085 | tmp_chain = tmp_chain->next) | |
2086 | index++; | |
2087 | ||
2088 | sals.nelts = index; | |
2089 | sals.sals = (struct symtab_and_line *) | |
2090 | xmalloc (index * sizeof (struct symtab_and_line)); | |
2091 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
2092 | sals.sals[index] = sal_chain->sal; | |
2093 | } | |
2094 | ||
2095 | return sals; | |
2096 | } | |
2097 | ||
2098 | /* Commands to deal with catching exceptions. */ | |
2099 | ||
30875e1c | 2100 | static void |
bd5635a1 RP |
2101 | catch_command_1 (arg, tempflag, from_tty) |
2102 | char *arg; | |
2103 | int tempflag; | |
2104 | int from_tty; | |
2105 | { | |
2106 | /* First, translate ARG into something we can deal with in terms | |
2107 | of breakpoints. */ | |
2108 | ||
2109 | struct symtabs_and_lines sals; | |
2110 | struct symtab_and_line sal; | |
2111 | register struct expression *cond = 0; | |
2112 | register struct breakpoint *b; | |
2113 | char *save_arg; | |
2114 | int i; | |
bd5635a1 RP |
2115 | |
2116 | sal.line = sal.pc = sal.end = 0; | |
2117 | sal.symtab = 0; | |
2118 | ||
2119 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
2120 | are breakpointed. */ | |
2121 | ||
2122 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2123 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2124 | { | |
2125 | /* Grab all active catch clauses. */ | |
2126 | sals = get_catch_sals (0); | |
2127 | } | |
2128 | else | |
2129 | { | |
2130 | /* Grab selected catch clauses. */ | |
2131 | error ("catch NAME not implemeneted"); | |
bdbd5f50 JG |
2132 | #if 0 |
2133 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 | 2134 | sals = map_catch_names (arg, catch_breakpoint); |
bdbd5f50 | 2135 | #endif |
bd5635a1 RP |
2136 | } |
2137 | ||
2138 | if (! sals.nelts) | |
2139 | return; | |
2140 | ||
2141 | save_arg = arg; | |
2142 | for (i = 0; i < sals.nelts; i++) | |
2143 | { | |
30875e1c | 2144 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
2145 | |
2146 | while (arg && *arg) | |
2147 | { | |
2148 | if (arg[0] == 'i' && arg[1] == 'f' | |
2149 | && (arg[2] == ' ' || arg[2] == '\t')) | |
30875e1c SG |
2150 | cond = parse_exp_1 ((arg += 2, &arg), |
2151 | block_for_pc (sals.sals[i].pc), 0); | |
bd5635a1 RP |
2152 | else |
2153 | error ("Junk at end of arguments."); | |
2154 | } | |
2155 | arg = save_arg; | |
bd5635a1 RP |
2156 | } |
2157 | ||
2158 | for (i = 0; i < sals.nelts; i++) | |
2159 | { | |
2160 | sal = sals.sals[i]; | |
2161 | ||
2162 | if (from_tty) | |
2163 | describe_other_breakpoints (sal.pc); | |
2164 | ||
2165 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
2166 | set_breakpoint_count (breakpoint_count + 1); |
2167 | b->number = breakpoint_count; | |
2168 | b->type = bp_breakpoint; | |
bd5635a1 | 2169 | b->cond = cond; |
30875e1c SG |
2170 | b->enable = enabled; |
2171 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 | 2172 | |
2d313932 | 2173 | printf ("Breakpoint %d at %s", b->number, local_hex_string(b->address)); |
bd5635a1 | 2174 | if (b->symtab) |
2d313932 JK |
2175 | printf (": file %s, line %d.", b->symtab->filename, b->line_number); |
2176 | printf ("\n"); | |
bd5635a1 RP |
2177 | } |
2178 | ||
2179 | if (sals.nelts > 1) | |
2180 | { | |
2d313932 JK |
2181 | printf ("Multiple breakpoints were set.\n"); |
2182 | printf ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 2183 | } |
c8950965 | 2184 | free ((PTR)sals.sals); |
bd5635a1 RP |
2185 | } |
2186 | ||
bdbd5f50 JG |
2187 | #if 0 |
2188 | /* These aren't used; I don't know what they were for. */ | |
bd5635a1 RP |
2189 | /* Disable breakpoints on all catch clauses described in ARGS. */ |
2190 | static void | |
2191 | disable_catch (args) | |
2192 | char *args; | |
2193 | { | |
2194 | /* Map the disable command to catch clauses described in ARGS. */ | |
2195 | } | |
2196 | ||
2197 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
2198 | static void | |
2199 | enable_catch (args) | |
2200 | char *args; | |
2201 | { | |
2202 | /* Map the disable command to catch clauses described in ARGS. */ | |
2203 | } | |
2204 | ||
2205 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
2206 | static void | |
2207 | delete_catch (args) | |
2208 | char *args; | |
2209 | { | |
2210 | /* Map the delete command to catch clauses described in ARGS. */ | |
2211 | } | |
bdbd5f50 | 2212 | #endif /* 0 */ |
bd5635a1 RP |
2213 | |
2214 | static void | |
2215 | catch_command (arg, from_tty) | |
2216 | char *arg; | |
2217 | int from_tty; | |
2218 | { | |
2219 | catch_command_1 (arg, 0, from_tty); | |
2220 | } | |
2221 | \f | |
2222 | static void | |
2223 | clear_command (arg, from_tty) | |
2224 | char *arg; | |
2225 | int from_tty; | |
2226 | { | |
2227 | register struct breakpoint *b, *b1; | |
2228 | struct symtabs_and_lines sals; | |
2229 | struct symtab_and_line sal; | |
2230 | register struct breakpoint *found; | |
2231 | int i; | |
2232 | ||
2233 | if (arg) | |
2234 | { | |
2235 | sals = decode_line_spec (arg, 1); | |
2236 | } | |
2237 | else | |
2238 | { | |
2239 | sals.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); | |
2240 | sal.line = default_breakpoint_line; | |
2241 | sal.symtab = default_breakpoint_symtab; | |
2242 | sal.pc = 0; | |
2243 | if (sal.symtab == 0) | |
2244 | error ("No source file specified."); | |
2245 | ||
2246 | sals.sals[0] = sal; | |
2247 | sals.nelts = 1; | |
2248 | } | |
2249 | ||
2250 | for (i = 0; i < sals.nelts; i++) | |
2251 | { | |
2252 | /* If exact pc given, clear bpts at that pc. | |
2253 | But if sal.pc is zero, clear all bpts on specified line. */ | |
2254 | sal = sals.sals[i]; | |
2255 | found = (struct breakpoint *) 0; | |
2256 | while (breakpoint_chain | |
2257 | && (sal.pc ? breakpoint_chain->address == sal.pc | |
2258 | : (breakpoint_chain->symtab == sal.symtab | |
2259 | && breakpoint_chain->line_number == sal.line))) | |
2260 | { | |
2261 | b1 = breakpoint_chain; | |
2262 | breakpoint_chain = b1->next; | |
2263 | b1->next = found; | |
2264 | found = b1; | |
2265 | } | |
2266 | ||
2267 | ALL_BREAKPOINTS (b) | |
2268 | while (b->next | |
30875e1c | 2269 | && b->next->type != bp_watchpoint |
bd5635a1 RP |
2270 | && (sal.pc ? b->next->address == sal.pc |
2271 | : (b->next->symtab == sal.symtab | |
2272 | && b->next->line_number == sal.line))) | |
2273 | { | |
2274 | b1 = b->next; | |
2275 | b->next = b1->next; | |
2276 | b1->next = found; | |
2277 | found = b1; | |
2278 | } | |
2279 | ||
2280 | if (found == 0) | |
2281 | { | |
2282 | if (arg) | |
2283 | error ("No breakpoint at %s.", arg); | |
2284 | else | |
2285 | error ("No breakpoint at this line."); | |
2286 | } | |
2287 | ||
2288 | if (found->next) from_tty = 1; /* Always report if deleted more than one */ | |
2d313932 | 2289 | if (from_tty) printf ("Deleted breakpoint%s ", found->next ? "s" : ""); |
bd5635a1 RP |
2290 | while (found) |
2291 | { | |
2d313932 | 2292 | if (from_tty) printf ("%d ", found->number); |
bd5635a1 RP |
2293 | b1 = found->next; |
2294 | delete_breakpoint (found); | |
2295 | found = b1; | |
2296 | } | |
2297 | if (from_tty) putchar ('\n'); | |
2298 | } | |
c8950965 | 2299 | free ((PTR)sals.sals); |
bd5635a1 RP |
2300 | } |
2301 | \f | |
2302 | /* Delete breakpoint in BS if they are `delete' breakpoints. | |
2303 | This is called after any breakpoint is hit, or after errors. */ | |
2304 | ||
2305 | void | |
2306 | breakpoint_auto_delete (bs) | |
2307 | bpstat bs; | |
2308 | { | |
2309 | for (; bs; bs = bs->next) | |
30875e1c | 2310 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == delete) |
bd5635a1 RP |
2311 | delete_breakpoint (bs->breakpoint_at); |
2312 | } | |
2313 | ||
2314 | /* Delete a breakpoint and clean up all traces of it in the data structures. */ | |
2315 | ||
30875e1c | 2316 | void |
bd5635a1 RP |
2317 | delete_breakpoint (bpt) |
2318 | struct breakpoint *bpt; | |
2319 | { | |
2320 | register struct breakpoint *b; | |
2321 | register bpstat bs; | |
2322 | ||
2323 | if (bpt->inserted) | |
2324 | target_remove_breakpoint(bpt->address, bpt->shadow_contents); | |
2325 | ||
2326 | if (breakpoint_chain == bpt) | |
2327 | breakpoint_chain = bpt->next; | |
2328 | ||
2329 | ALL_BREAKPOINTS (b) | |
2330 | if (b->next == bpt) | |
2331 | { | |
2332 | b->next = bpt->next; | |
2333 | break; | |
2334 | } | |
2335 | ||
2336 | check_duplicates (bpt->address); | |
2337 | ||
2338 | free_command_lines (&bpt->commands); | |
2339 | if (bpt->cond) | |
c8950965 | 2340 | free ((PTR)bpt->cond); |
bd5635a1 | 2341 | if (bpt->cond_string != NULL) |
c8950965 | 2342 | free ((PTR)bpt->cond_string); |
bd5635a1 | 2343 | if (bpt->addr_string != NULL) |
c8950965 | 2344 | free ((PTR)bpt->addr_string); |
0eaaa46a JK |
2345 | if (bpt->exp_string != NULL) |
2346 | free ((PTR)bpt->exp_string); | |
bd5635a1 | 2347 | |
30875e1c | 2348 | if (xgdb_verbose && bpt->type == bp_breakpoint) |
2d313932 | 2349 | printf ("breakpoint #%d deleted\n", bpt->number); |
bd5635a1 RP |
2350 | |
2351 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
2352 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat for now. */ | |
2353 | for (bs = stop_bpstat; bs; bs = bs->next) | |
2354 | if (bs->breakpoint_at == bpt) | |
2355 | bs->breakpoint_at = NULL; | |
c8950965 | 2356 | free ((PTR)bpt); |
bd5635a1 RP |
2357 | } |
2358 | ||
bd5635a1 RP |
2359 | static void |
2360 | delete_command (arg, from_tty) | |
2361 | char *arg; | |
2362 | int from_tty; | |
2363 | { | |
2364 | ||
2365 | if (arg == 0) | |
2366 | { | |
2367 | /* Ask user only if there are some breakpoints to delete. */ | |
2368 | if (!from_tty | |
2369 | || (breakpoint_chain && query ("Delete all breakpoints? ", 0, 0))) | |
2370 | { | |
2371 | /* No arg; clear all breakpoints. */ | |
2372 | while (breakpoint_chain) | |
2373 | delete_breakpoint (breakpoint_chain); | |
2374 | } | |
2375 | } | |
2376 | else | |
2377 | map_breakpoint_numbers (arg, delete_breakpoint); | |
2378 | } | |
2379 | ||
bdbd5f50 JG |
2380 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
2381 | The value we return ends up being the return value from catch_errors. | |
2382 | Unused in this case. */ | |
2383 | ||
2384 | static int | |
bd5635a1 | 2385 | breakpoint_re_set_one (bint) |
bdbd5f50 | 2386 | char *bint; |
bd5635a1 RP |
2387 | { |
2388 | struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */ | |
2389 | int i; | |
2390 | struct symtabs_and_lines sals; | |
bd5635a1 | 2391 | char *s; |
30875e1c | 2392 | enum enable save_enable; |
bd5635a1 | 2393 | |
80ba48f5 | 2394 | switch (b->type) |
bd5635a1 | 2395 | { |
80ba48f5 SG |
2396 | case bp_breakpoint: |
2397 | if (b->addr_string == NULL) | |
2398 | { | |
2399 | /* Anything without a string can't be re-set. */ | |
2400 | delete_breakpoint (b); | |
2401 | return 0; | |
2402 | } | |
30875e1c SG |
2403 | /* In case we have a problem, disable this breakpoint. We'll restore |
2404 | its status if we succeed. */ | |
2405 | save_enable = b->enable; | |
2406 | b->enable = disabled; | |
2407 | ||
bd5635a1 RP |
2408 | s = b->addr_string; |
2409 | sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0); | |
2410 | for (i = 0; i < sals.nelts; i++) | |
2411 | { | |
30875e1c | 2412 | resolve_sal_pc (&sals.sals[i]); |
8537ba60 SG |
2413 | if (b->symtab != sals.sals[i].symtab |
2414 | || b->line_number != sals.sals[i].line | |
2415 | || b->address != sals.sals[i].pc) | |
bd5635a1 | 2416 | { |
8537ba60 SG |
2417 | b->symtab = sals.sals[i].symtab; |
2418 | b->line_number = sals.sals[i].line; | |
2419 | b->address = sals.sals[i].pc; | |
2420 | ||
2421 | if (b->cond_string != NULL) | |
2422 | { | |
2423 | s = b->cond_string; | |
0b0d6c3f PS |
2424 | if (b->cond) |
2425 | free ((PTR)b->cond); | |
8537ba60 SG |
2426 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
2427 | } | |
bd5635a1 | 2428 | |
8537ba60 | 2429 | check_duplicates (b->address); |
bd5635a1 | 2430 | |
8537ba60 SG |
2431 | mention (b); |
2432 | } | |
30875e1c | 2433 | b->enable = save_enable; /* Restore it, this worked. */ |
bd5635a1 | 2434 | } |
c8950965 | 2435 | free ((PTR)sals.sals); |
80ba48f5 | 2436 | break; |
2d313932 | 2437 | |
80ba48f5 | 2438 | case bp_watchpoint: |
0eaaa46a | 2439 | innermost_block = NULL; |
0a97f6c4 JK |
2440 | /* The issue arises of what context to evaluate this in. The same |
2441 | one as when it was set, but what does that mean when symbols have | |
2442 | been re-read? We could save the filename and functionname, but | |
2443 | if the context is more local than that, the best we could do would | |
2444 | be something like how many levels deep and which index at that | |
2445 | particular level, but that's going to be less stable than filenames | |
2446 | or functionnames. */ | |
2447 | /* So for now, just use a global context. */ | |
0eaaa46a JK |
2448 | b->exp = parse_expression (b->exp_string); |
2449 | b->exp_valid_block = innermost_block; | |
2450 | b->val = evaluate_expression (b->exp); | |
2451 | release_value (b->val); | |
2452 | if (VALUE_LAZY (b->val)) | |
2453 | value_fetch_lazy (b->val); | |
2454 | ||
2d313932 JK |
2455 | if (b->cond_string != NULL) |
2456 | { | |
2457 | s = b->cond_string; | |
2458 | b->cond = parse_exp_1 (&s, (struct block *)0, 0); | |
2459 | } | |
cabd4da6 JK |
2460 | if (b->enable == enabled) |
2461 | mention (b); | |
80ba48f5 | 2462 | break; |
2d313932 | 2463 | |
80ba48f5 SG |
2464 | default: |
2465 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
2d313932 | 2466 | /* fall through */ |
80ba48f5 SG |
2467 | case bp_until: |
2468 | case bp_finish: | |
2469 | case bp_longjmp: | |
2470 | case bp_longjmp_resume: | |
2471 | delete_breakpoint (b); | |
2472 | break; | |
bd5635a1 | 2473 | } |
80ba48f5 | 2474 | |
bdbd5f50 | 2475 | return 0; |
bd5635a1 RP |
2476 | } |
2477 | ||
2478 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
2479 | void | |
2480 | breakpoint_re_set () | |
2481 | { | |
cba0d141 | 2482 | struct breakpoint *b, *temp; |
30875e1c SG |
2483 | static char message1[] = "Error in re-setting breakpoint %d:\n"; |
2484 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 | 2485 | |
ea678717 JG |
2486 | /* If we have no current source symtab, and we have any breakpoints, |
2487 | go through the work of making a source context. */ | |
a8e033f2 | 2488 | if (current_source_symtab == NULL && breakpoint_chain != 0) |
9b280a7f | 2489 | { |
a8e033f2 | 2490 | select_source_symtab (NULL); |
9b280a7f JG |
2491 | } |
2492 | ||
cba0d141 | 2493 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 2494 | { |
2d313932 | 2495 | sprintf (message, message1, b->number); /* Format possible error msg */ |
4ed3a9ea | 2496 | catch_errors (breakpoint_re_set_one, (char *) b, message); |
bd5635a1 RP |
2497 | } |
2498 | ||
80ba48f5 SG |
2499 | create_longjmp_breakpoint("longjmp"); |
2500 | create_longjmp_breakpoint("_longjmp"); | |
2501 | create_longjmp_breakpoint("siglongjmp"); | |
2502 | create_longjmp_breakpoint(NULL); | |
2503 | ||
1eeba686 PB |
2504 | #if 0 |
2505 | /* Took this out (temporaliy at least), since it produces an extra | |
2506 | blank line at startup. This messes up the gdbtests. -PB */ | |
bd5635a1 RP |
2507 | /* Blank line to finish off all those mention() messages we just printed. */ |
2508 | printf_filtered ("\n"); | |
1eeba686 | 2509 | #endif |
bd5635a1 RP |
2510 | } |
2511 | \f | |
2512 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
2513 | If from_tty is nonzero, it prints a message to that effect, | |
2514 | which ends with a period (no newline). */ | |
2515 | ||
2516 | void | |
2517 | set_ignore_count (bptnum, count, from_tty) | |
2518 | int bptnum, count, from_tty; | |
2519 | { | |
2520 | register struct breakpoint *b; | |
2521 | ||
2522 | if (count < 0) | |
2523 | count = 0; | |
2524 | ||
2525 | ALL_BREAKPOINTS (b) | |
2526 | if (b->number == bptnum) | |
2527 | { | |
2528 | b->ignore_count = count; | |
2529 | if (!from_tty) | |
2530 | return; | |
2531 | else if (count == 0) | |
423e9664 SG |
2532 | printf_filtered ("Will stop next time breakpoint %d is reached.", |
2533 | bptnum); | |
bd5635a1 | 2534 | else if (count == 1) |
423e9664 SG |
2535 | printf_filtered ("Will ignore next crossing of breakpoint %d.", |
2536 | bptnum); | |
bd5635a1 | 2537 | else |
423e9664 | 2538 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", |
bd5635a1 RP |
2539 | count, bptnum); |
2540 | return; | |
2541 | } | |
2542 | ||
2543 | error ("No breakpoint number %d.", bptnum); | |
2544 | } | |
2545 | ||
2546 | /* Clear the ignore counts of all breakpoints. */ | |
2547 | void | |
2548 | breakpoint_clear_ignore_counts () | |
2549 | { | |
2550 | struct breakpoint *b; | |
2551 | ||
2552 | ALL_BREAKPOINTS (b) | |
2553 | b->ignore_count = 0; | |
2554 | } | |
2555 | ||
2556 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
2557 | ||
2558 | static void | |
2559 | ignore_command (args, from_tty) | |
2560 | char *args; | |
2561 | int from_tty; | |
2562 | { | |
2563 | char *p = args; | |
2564 | register int num; | |
2565 | ||
2566 | if (p == 0) | |
2567 | error_no_arg ("a breakpoint number"); | |
2568 | ||
2569 | num = get_number (&p); | |
2570 | ||
2571 | if (*p == 0) | |
2572 | error ("Second argument (specified ignore-count) is missing."); | |
2573 | ||
bdbd5f50 JG |
2574 | set_ignore_count (num, |
2575 | longest_to_int (value_as_long (parse_and_eval (p))), | |
2576 | from_tty); | |
423e9664 | 2577 | printf_filtered ("\n"); |
bd5635a1 RP |
2578 | } |
2579 | \f | |
2580 | /* Call FUNCTION on each of the breakpoints | |
2581 | whose numbers are given in ARGS. */ | |
2582 | ||
2583 | static void | |
2584 | map_breakpoint_numbers (args, function) | |
2585 | char *args; | |
30875e1c | 2586 | void (*function) PARAMS ((struct breakpoint *)); |
bd5635a1 RP |
2587 | { |
2588 | register char *p = args; | |
2589 | char *p1; | |
2590 | register int num; | |
2591 | register struct breakpoint *b; | |
2592 | ||
2593 | if (p == 0) | |
2594 | error_no_arg ("one or more breakpoint numbers"); | |
2595 | ||
2596 | while (*p) | |
2597 | { | |
2598 | p1 = p; | |
2599 | ||
2600 | num = get_number (&p1); | |
2601 | ||
2602 | ALL_BREAKPOINTS (b) | |
2603 | if (b->number == num) | |
2604 | { | |
2605 | function (b); | |
2606 | goto win; | |
2607 | } | |
2d313932 | 2608 | printf ("No breakpoint number %d.\n", num); |
bd5635a1 RP |
2609 | win: |
2610 | p = p1; | |
2611 | } | |
2612 | } | |
2613 | ||
2614 | static void | |
2615 | enable_breakpoint (bpt) | |
2616 | struct breakpoint *bpt; | |
2617 | { | |
2618 | bpt->enable = enabled; | |
2619 | ||
30875e1c | 2620 | if (xgdb_verbose && bpt->type == bp_breakpoint) |
2d313932 | 2621 | printf ("breakpoint #%d enabled\n", bpt->number); |
bd5635a1 RP |
2622 | |
2623 | check_duplicates (bpt->address); | |
30875e1c | 2624 | if (bpt->type == bp_watchpoint) |
bd5635a1 | 2625 | { |
f266e564 JK |
2626 | if (bpt->exp_valid_block != NULL |
2627 | && !contained_in (get_selected_block (), bpt->exp_valid_block)) | |
2628 | { | |
2629 | printf_filtered ("\ | |
2630 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
2631 | is valid is not currently in scope.\n", bpt->number); | |
0b0d6c3f | 2632 | bpt->enable = disabled; |
f266e564 JK |
2633 | return; |
2634 | } | |
2635 | ||
bd5635a1 RP |
2636 | value_free (bpt->val); |
2637 | ||
2638 | bpt->val = evaluate_expression (bpt->exp); | |
2639 | release_value (bpt->val); | |
2d313932 JK |
2640 | if (VALUE_LAZY (bpt->val)) |
2641 | value_fetch_lazy (bpt->val); | |
bd5635a1 RP |
2642 | } |
2643 | } | |
2644 | ||
bdbd5f50 | 2645 | /* ARGSUSED */ |
bd5635a1 RP |
2646 | static void |
2647 | enable_command (args, from_tty) | |
2648 | char *args; | |
2649 | int from_tty; | |
2650 | { | |
2651 | struct breakpoint *bpt; | |
2652 | if (args == 0) | |
2653 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
2654 | switch (bpt->type) |
2655 | { | |
2656 | case bp_breakpoint: | |
2657 | case bp_watchpoint: | |
2658 | enable_breakpoint (bpt); | |
2659 | default: | |
2660 | continue; | |
2661 | } | |
bd5635a1 RP |
2662 | else |
2663 | map_breakpoint_numbers (args, enable_breakpoint); | |
2664 | } | |
2665 | ||
2666 | static void | |
2667 | disable_breakpoint (bpt) | |
2668 | struct breakpoint *bpt; | |
2669 | { | |
2670 | bpt->enable = disabled; | |
2671 | ||
30875e1c | 2672 | if (xgdb_verbose && bpt->type == bp_breakpoint) |
423e9664 | 2673 | printf_filtered ("breakpoint #%d disabled\n", bpt->number); |
bd5635a1 RP |
2674 | |
2675 | check_duplicates (bpt->address); | |
2676 | } | |
2677 | ||
bdbd5f50 | 2678 | /* ARGSUSED */ |
bd5635a1 RP |
2679 | static void |
2680 | disable_command (args, from_tty) | |
2681 | char *args; | |
2682 | int from_tty; | |
2683 | { | |
2684 | register struct breakpoint *bpt; | |
2685 | if (args == 0) | |
2686 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
2687 | switch (bpt->type) |
2688 | { | |
2689 | case bp_breakpoint: | |
2690 | case bp_watchpoint: | |
2691 | disable_breakpoint (bpt); | |
2692 | default: | |
2693 | continue; | |
2694 | } | |
bd5635a1 RP |
2695 | else |
2696 | map_breakpoint_numbers (args, disable_breakpoint); | |
2697 | } | |
2698 | ||
2699 | static void | |
2700 | enable_once_breakpoint (bpt) | |
2701 | struct breakpoint *bpt; | |
2702 | { | |
30875e1c SG |
2703 | bpt->enable = enabled; |
2704 | bpt->disposition = disable; | |
bd5635a1 RP |
2705 | |
2706 | check_duplicates (bpt->address); | |
2707 | } | |
2708 | ||
bdbd5f50 | 2709 | /* ARGSUSED */ |
bd5635a1 RP |
2710 | static void |
2711 | enable_once_command (args, from_tty) | |
2712 | char *args; | |
2713 | int from_tty; | |
2714 | { | |
2715 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
2716 | } | |
2717 | ||
2718 | static void | |
2719 | enable_delete_breakpoint (bpt) | |
2720 | struct breakpoint *bpt; | |
2721 | { | |
30875e1c SG |
2722 | bpt->enable = enabled; |
2723 | bpt->disposition = delete; | |
bd5635a1 RP |
2724 | |
2725 | check_duplicates (bpt->address); | |
2726 | } | |
2727 | ||
bdbd5f50 | 2728 | /* ARGSUSED */ |
bd5635a1 RP |
2729 | static void |
2730 | enable_delete_command (args, from_tty) | |
2731 | char *args; | |
2732 | int from_tty; | |
2733 | { | |
2734 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
2735 | } | |
2736 | \f | |
2737 | /* | |
2738 | * Use default_breakpoint_'s, or nothing if they aren't valid. | |
2739 | */ | |
2740 | struct symtabs_and_lines | |
2741 | decode_line_spec_1 (string, funfirstline) | |
2742 | char *string; | |
2743 | int funfirstline; | |
2744 | { | |
2745 | struct symtabs_and_lines sals; | |
2746 | if (string == 0) | |
2747 | error ("Empty line specification."); | |
2748 | if (default_breakpoint_valid) | |
2749 | sals = decode_line_1 (&string, funfirstline, | |
2750 | default_breakpoint_symtab, default_breakpoint_line); | |
2751 | else | |
2752 | sals = decode_line_1 (&string, funfirstline, (struct symtab *)NULL, 0); | |
2753 | if (*string) | |
2754 | error ("Junk at end of line specification: %s", string); | |
2755 | return sals; | |
2756 | } | |
2757 | \f | |
bd5635a1 RP |
2758 | void |
2759 | _initialize_breakpoint () | |
2760 | { | |
2761 | breakpoint_chain = 0; | |
2762 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
2763 | before a breakpoint is set. */ | |
2764 | breakpoint_count = 0; | |
2765 | ||
2766 | add_com ("ignore", class_breakpoint, ignore_command, | |
2767 | "Set ignore-count of breakpoint number N to COUNT."); | |
2768 | ||
2769 | add_com ("commands", class_breakpoint, commands_command, | |
2770 | "Set commands to be executed when a breakpoint is hit.\n\ | |
2771 | Give breakpoint number as argument after \"commands\".\n\ | |
2772 | With no argument, the targeted breakpoint is the last one set.\n\ | |
2773 | The commands themselves follow starting on the next line.\n\ | |
2774 | Type a line containing \"end\" to indicate the end of them.\n\ | |
2775 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
2776 | then no output is printed when it is hit, except what the commands print."); | |
2777 | ||
2778 | add_com ("condition", class_breakpoint, condition_command, | |
2779 | "Specify breakpoint number N to break only if COND is true.\n\ | |
d3b9c0df JG |
2780 | N is an integer; COND is an expression to be evaluated whenever\n\ |
2781 | breakpoint N is reached. "); | |
bd5635a1 RP |
2782 | |
2783 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
2784 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
2785 | Like \"break\" except the breakpoint is only enabled temporarily,\n\ | |
2786 | so it will be disabled when hit. Equivalent to \"break\" followed\n\ | |
2787 | by using \"enable once\" on the breakpoint number."); | |
2788 | ||
2789 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
2790 | "Enable some breakpoints.\n\ | |
2791 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
2792 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
2793 | This is used to cancel the effect of the \"disable\" command.\n\ | |
2794 | With a subcommand you can enable temporarily.", | |
2795 | &enablelist, "enable ", 1, &cmdlist); | |
2796 | ||
2797 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
2798 | "Enable some breakpoints.\n\ | |
2799 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
2800 | This is used to cancel the effect of the \"disable\" command.\n\ | |
2801 | May be abbreviated to simply \"enable\".\n", | |
2802 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); | |
2803 | ||
2804 | add_cmd ("once", no_class, enable_once_command, | |
2805 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
2806 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.\n\ | |
2807 | See the \"tbreak\" command which sets a breakpoint and enables it once.", | |
2808 | &enablebreaklist); | |
2809 | ||
2810 | add_cmd ("delete", no_class, enable_delete_command, | |
2811 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
2812 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
2813 | &enablebreaklist); | |
2814 | ||
2815 | add_cmd ("delete", no_class, enable_delete_command, | |
2816 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
2817 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
2818 | &enablelist); | |
2819 | ||
2820 | add_cmd ("once", no_class, enable_once_command, | |
2821 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
2822 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.\n\ | |
2823 | See the \"tbreak\" command which sets a breakpoint and enables it once.", | |
2824 | &enablelist); | |
2825 | ||
2826 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
2827 | "Disable some breakpoints.\n\ | |
2828 | Arguments are breakpoint numbers with spaces in between.\n\ | |
2829 | To disable all breakpoints, give no argument.\n\ | |
2830 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
2831 | &disablelist, "disable ", 1, &cmdlist); | |
2832 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
2833 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
2834 | ||
2835 | add_cmd ("breakpoints", class_alias, disable_command, | |
2836 | "Disable some breakpoints.\n\ | |
2837 | Arguments are breakpoint numbers with spaces in between.\n\ | |
2838 | To disable all breakpoints, give no argument.\n\ | |
2839 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
2840 | This command may be abbreviated \"disable\".", | |
2841 | &disablelist); | |
2842 | ||
2843 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
2844 | "Delete some breakpoints or auto-display expressions.\n\ | |
2845 | Arguments are breakpoint numbers with spaces in between.\n\ | |
2846 | To delete all breakpoints, give no argument.\n\ | |
2847 | \n\ | |
2848 | Also a prefix command for deletion of other GDB objects.\n\ | |
2849 | The \"unset\" command is also an alias for \"delete\".", | |
2850 | &deletelist, "delete ", 1, &cmdlist); | |
2851 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
bd5635a1 RP |
2852 | |
2853 | add_cmd ("breakpoints", class_alias, delete_command, | |
2854 | "Delete some breakpoints or auto-display expressions.\n\ | |
2855 | Arguments are breakpoint numbers with spaces in between.\n\ | |
2856 | To delete all breakpoints, give no argument.\n\ | |
2857 | This command may be abbreviated \"delete\".", | |
2858 | &deletelist); | |
2859 | ||
2860 | add_com ("clear", class_breakpoint, clear_command, | |
2861 | "Clear breakpoint at specified line or function.\n\ | |
2862 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
2863 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
2864 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
2865 | If an address is specified, breakpoints at that address are cleared.\n\n\ | |
2866 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
2867 | is executing in.\n\ | |
2868 | \n\ | |
2869 | See also the \"delete\" command which clears breakpoints by number."); | |
2870 | ||
2871 | add_com ("break", class_breakpoint, break_command, | |
2872 | "Set breakpoint at specified line or function.\n\ | |
2873 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
2874 | If line number is specified, break at start of code for that line.\n\ | |
2875 | If function is specified, break at start of code for that function.\n\ | |
2876 | If an address is specified, break at that exact address.\n\ | |
2877 | With no arg, uses current execution address of selected stack frame.\n\ | |
2878 | This is useful for breaking on return to a stack frame.\n\ | |
2879 | \n\ | |
2880 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
2881 | \n\ | |
2882 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
2883 | add_com_alias ("b", "break", class_run, 1); | |
2884 | add_com_alias ("br", "break", class_run, 1); | |
2885 | add_com_alias ("bre", "break", class_run, 1); | |
2886 | add_com_alias ("brea", "break", class_run, 1); | |
2887 | ||
2888 | add_info ("breakpoints", breakpoints_info, | |
80ba48f5 SG |
2889 | "Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
2890 | The \"Type\" column indicates one of:\n\ | |
423e9664 SG |
2891 | \tbreakpoint - normal breakpoint\n\ |
2892 | \twatchpoint - watchpoint\n\ | |
80ba48f5 SG |
2893 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
2894 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
2895 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
2896 | address and file/line number respectively.\n\n\ | |
2897 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
2898 | are set to the address of the last breakpoint listed.\n\n\ | |
2899 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
2900 | breakpoint set."); | |
2901 | ||
9b280a7f JG |
2902 | #if MAINTENANCE_CMDS |
2903 | ||
2904 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, | |
bd5635a1 | 2905 | "Status of all breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 2906 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
2907 | \tbreakpoint - normal breakpoint\n\ |
2908 | \twatchpoint - watchpoint\n\ | |
2909 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
2910 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
2911 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
2912 | \tfinish - internal breakpoint used by the \"finish\" command\n\ | |
80ba48f5 SG |
2913 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
2914 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
2915 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
2916 | address and file/line number respectively.\n\n\ | |
bd5635a1 RP |
2917 | Convenience variable \"$_\" and default examine address for \"x\"\n\ |
2918 | are set to the address of the last breakpoint listed.\n\n\ | |
2919 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
9b280a7f JG |
2920 | breakpoint set.", |
2921 | &maintenanceinfolist); | |
2922 | ||
2923 | #endif /* MAINTENANCE_CMDS */ | |
bd5635a1 RP |
2924 | |
2925 | add_com ("catch", class_breakpoint, catch_command, | |
2926 | "Set breakpoints to catch exceptions that are raised.\n\ | |
2927 | Argument may be a single exception to catch, multiple exceptions\n\ | |
2928 | to catch, or the default exception \"default\". If no arguments\n\ | |
2929 | are given, breakpoints are set at all exception handlers catch clauses\n\ | |
2930 | within the current scope.\n\ | |
2931 | \n\ | |
2932 | A condition specified for the catch applies to all breakpoints set\n\ | |
2933 | with this command\n\ | |
2934 | \n\ | |
2935 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
2936 | ||
2937 | add_com ("watch", class_breakpoint, watch_command, | |
2938 | "Set a watchpoint for an expression.\n\ | |
2939 | A watchpoint stops execution of your program whenever the value of\n\ | |
2940 | an expression changes."); | |
2941 | ||
c8950965 JG |
2942 | add_info ("watchpoints", breakpoints_info, |
2943 | "Synonym for ``info breakpoints''."); | |
bd5635a1 | 2944 | } |
1eeba686 | 2945 | |
2d313932 JK |
2946 | /* OK, when we call objfile_relocate, we need to relocate breakpoints |
2947 | too. breakpoint_re_set is not a good choice--for example, if | |
2948 | addr_string contains just a line number without a file name the | |
2949 | breakpoint might get set in a different file. In general, there is | |
2950 | no need to go all the way back to the user's string (though this might | |
2951 | work if some effort were made to canonicalize it), since symtabs and | |
2952 | everything except addresses are still valid. | |
1eeba686 | 2953 | |
2d313932 JK |
2954 | Probably the best way to solve this is to have each breakpoint save |
2955 | the objfile and the section number that was used to set it (if set | |
2956 | by "*addr", probably it is best to use find_pc_line to get a symtab | |
2957 | and use the objfile and block_line_section for that symtab). Then | |
2958 | objfile_relocate can call fixup_breakpoints with the objfile and | |
2959 | the new_offsets, and it can relocate only the appropriate breakpoints. */ | |
1eeba686 | 2960 | |
2d313932 JK |
2961 | #ifdef IBM6000_TARGET |
2962 | /* But for now, just kludge it based on the concept that before an | |
2963 | objfile is relocated the breakpoint is below 0x10000000, and afterwards | |
2964 | it is higher, so that way we only relocate each breakpoint once. */ | |
1eeba686 | 2965 | |
1eeba686 PB |
2966 | void |
2967 | fixup_breakpoints (low, high, delta) | |
2968 | CORE_ADDR low; | |
2969 | CORE_ADDR high; | |
2970 | CORE_ADDR delta; | |
2971 | { | |
2972 | struct breakpoint *b; | |
1eeba686 PB |
2973 | |
2974 | ALL_BREAKPOINTS (b) | |
2975 | { | |
2976 | if (b->address >= low && b->address <= high) | |
2977 | b->address += delta; | |
2978 | } | |
2979 | } | |
2980 | #endif |