Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* Everything about breakpoints, for GDB. |
e8bf33c4 | 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995 |
9f577285 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
bdbd5f50 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
bdbd5f50 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
bdbd5f50 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
bdbd5f50 JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 20 | |
bd5635a1 | 21 | #include "defs.h" |
1eeba686 | 22 | #include <ctype.h> |
bd5635a1 RP |
23 | #include "symtab.h" |
24 | #include "frame.h" | |
25 | #include "breakpoint.h" | |
30875e1c | 26 | #include "gdbtypes.h" |
bd5635a1 RP |
27 | #include "expression.h" |
28 | #include "gdbcore.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "value.h" | |
31 | #include "ctype.h" | |
32 | #include "command.h" | |
33 | #include "inferior.h" | |
199b2450 | 34 | #include "thread.h" |
bd5635a1 | 35 | #include "target.h" |
d3b9c0df | 36 | #include "language.h" |
2b576293 | 37 | #include "gdb_string.h" |
423e9664 | 38 | #include "demangle.h" |
9f577285 | 39 | #include "annotate.h" |
bd5635a1 | 40 | |
30875e1c SG |
41 | /* local function prototypes */ |
42 | ||
43 | static void | |
44 | catch_command_1 PARAMS ((char *, int, int)); | |
45 | ||
46 | static void | |
47 | enable_delete_command PARAMS ((char *, int)); | |
48 | ||
49 | static void | |
50 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
51 | ||
52 | static void | |
53 | enable_once_command PARAMS ((char *, int)); | |
54 | ||
55 | static void | |
56 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
57 | ||
58 | static void | |
59 | disable_command PARAMS ((char *, int)); | |
60 | ||
30875e1c SG |
61 | static void |
62 | enable_command PARAMS ((char *, int)); | |
63 | ||
30875e1c SG |
64 | static void |
65 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); | |
66 | ||
67 | static void | |
68 | ignore_command PARAMS ((char *, int)); | |
69 | ||
70 | static int | |
71 | breakpoint_re_set_one PARAMS ((char *)); | |
72 | ||
73 | static void | |
74 | delete_command PARAMS ((char *, int)); | |
75 | ||
76 | static void | |
77 | clear_command PARAMS ((char *, int)); | |
78 | ||
79 | static void | |
80 | catch_command PARAMS ((char *, int)); | |
81 | ||
82 | static struct symtabs_and_lines | |
83 | get_catch_sals PARAMS ((int)); | |
84 | ||
85 | static void | |
86 | watch_command PARAMS ((char *, int)); | |
87 | ||
999dd04b | 88 | static int |
11054881 | 89 | can_use_hardware_watchpoint PARAMS ((struct value *)); |
999dd04b | 90 | |
30875e1c SG |
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 | ||
999dd04b JL |
136 | static int |
137 | remove_breakpoint PARAMS ((struct breakpoint *)); | |
30875e1c | 138 | |
bd5635a1 | 139 | extern int addressprint; /* Print machine addresses? */ |
bd5635a1 | 140 | |
bd5635a1 RP |
141 | /* Are we executing breakpoint commands? */ |
142 | static int executing_breakpoint_commands; | |
143 | ||
cba0d141 JG |
144 | /* Walk the following statement or block through all breakpoints. |
145 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
146 | breakpoint. */ | |
147 | ||
bd5635a1 RP |
148 | #define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) |
149 | ||
cba0d141 JG |
150 | #define ALL_BREAKPOINTS_SAFE(b,tmp) \ |
151 | for (b = breakpoint_chain; \ | |
152 | b? (tmp=b->next, 1): 0; \ | |
153 | b = tmp) | |
154 | ||
9f577285 SS |
155 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
156 | ||
157 | int show_breakpoint_hit_counts = 1; | |
158 | ||
bd5635a1 RP |
159 | /* Chain of all breakpoints defined. */ |
160 | ||
e8bf33c4 | 161 | struct breakpoint *breakpoint_chain; |
bd5635a1 RP |
162 | |
163 | /* Number of last breakpoint made. */ | |
164 | ||
165 | static int breakpoint_count; | |
166 | ||
167 | /* Set breakpoint count to NUM. */ | |
9f577285 | 168 | |
bd5635a1 RP |
169 | static void |
170 | set_breakpoint_count (num) | |
171 | int num; | |
172 | { | |
173 | breakpoint_count = num; | |
174 | set_internalvar (lookup_internalvar ("bpnum"), | |
06b6c733 | 175 | value_from_longest (builtin_type_int, (LONGEST) num)); |
bd5635a1 RP |
176 | } |
177 | ||
9f577285 SS |
178 | /* Used in run_command to zero the hit count when a new run starts. */ |
179 | ||
180 | void | |
181 | clear_breakpoint_hit_counts () | |
182 | { | |
183 | struct breakpoint *b; | |
184 | ||
185 | ALL_BREAKPOINTS (b) | |
186 | b->hit_count = 0; | |
187 | } | |
188 | ||
bd5635a1 RP |
189 | /* Default address, symtab and line to put a breakpoint at |
190 | for "break" command with no arg. | |
191 | if default_breakpoint_valid is zero, the other three are | |
192 | not valid, and "break" with no arg is an error. | |
193 | ||
194 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
195 | ||
196 | int default_breakpoint_valid; | |
197 | CORE_ADDR default_breakpoint_address; | |
198 | struct symtab *default_breakpoint_symtab; | |
199 | int default_breakpoint_line; | |
bd5635a1 RP |
200 | \f |
201 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
202 | Advance *PP after the string and any trailing whitespace. | |
203 | ||
204 | Currently the string can either be a number or "$" followed by the name | |
205 | of a convenience variable. Making it an expression wouldn't work well | |
206 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
207 | static int | |
208 | get_number (pp) | |
209 | char **pp; | |
210 | { | |
211 | int retval; | |
212 | char *p = *pp; | |
213 | ||
214 | if (p == NULL) | |
215 | /* Empty line means refer to the last breakpoint. */ | |
216 | return breakpoint_count; | |
217 | else if (*p == '$') | |
218 | { | |
219 | /* Make a copy of the name, so we can null-terminate it | |
220 | to pass to lookup_internalvar(). */ | |
221 | char *varname; | |
222 | char *start = ++p; | |
82a2edfb | 223 | value_ptr val; |
bd5635a1 RP |
224 | |
225 | while (isalnum (*p) || *p == '_') | |
226 | p++; | |
227 | varname = (char *) alloca (p - start + 1); | |
228 | strncpy (varname, start, p - start); | |
229 | varname[p - start] = '\0'; | |
230 | val = value_of_internalvar (lookup_internalvar (varname)); | |
231 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
232 | error ( | |
233 | "Convenience variables used to specify breakpoints must have integer values." | |
234 | ); | |
235 | retval = (int) value_as_long (val); | |
236 | } | |
237 | else | |
238 | { | |
80ba48f5 SG |
239 | if (*p == '-') |
240 | ++p; | |
bd5635a1 RP |
241 | while (*p >= '0' && *p <= '9') |
242 | ++p; | |
243 | if (p == *pp) | |
244 | /* There is no number here. (e.g. "cond a == b"). */ | |
245 | error_no_arg ("breakpoint number"); | |
246 | retval = atoi (*pp); | |
247 | } | |
248 | if (!(isspace (*p) || *p == '\0')) | |
249 | error ("breakpoint number expected"); | |
250 | while (isspace (*p)) | |
251 | p++; | |
252 | *pp = p; | |
253 | return retval; | |
254 | } | |
255 | \f | |
256 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
257 | ||
258 | static void | |
259 | condition_command (arg, from_tty) | |
260 | char *arg; | |
261 | int from_tty; | |
262 | { | |
263 | register struct breakpoint *b; | |
264 | char *p; | |
265 | register int bnum; | |
266 | ||
267 | if (arg == 0) | |
268 | error_no_arg ("breakpoint number"); | |
269 | ||
270 | p = arg; | |
271 | bnum = get_number (&p); | |
272 | ||
273 | ALL_BREAKPOINTS (b) | |
274 | if (b->number == bnum) | |
275 | { | |
276 | if (b->cond) | |
277 | { | |
c8950965 | 278 | free ((PTR)b->cond); |
bd5635a1 RP |
279 | b->cond = 0; |
280 | } | |
281 | if (b->cond_string != NULL) | |
c8950965 | 282 | free ((PTR)b->cond_string); |
bd5635a1 RP |
283 | |
284 | if (*p == 0) | |
285 | { | |
286 | b->cond = 0; | |
287 | b->cond_string = NULL; | |
288 | if (from_tty) | |
423e9664 | 289 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); |
bd5635a1 RP |
290 | } |
291 | else | |
292 | { | |
293 | arg = p; | |
294 | /* I don't know if it matters whether this is the string the user | |
295 | typed in or the decompiled expression. */ | |
296 | b->cond_string = savestring (arg, strlen (arg)); | |
d3b9c0df | 297 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); |
bd5635a1 RP |
298 | if (*arg) |
299 | error ("Junk at end of expression"); | |
300 | } | |
16726dd1 | 301 | breakpoints_changed (); |
bd5635a1 RP |
302 | return; |
303 | } | |
304 | ||
305 | error ("No breakpoint number %d.", bnum); | |
306 | } | |
307 | ||
bdbd5f50 | 308 | /* ARGSUSED */ |
bd5635a1 RP |
309 | static void |
310 | commands_command (arg, from_tty) | |
311 | char *arg; | |
312 | int from_tty; | |
313 | { | |
314 | register struct breakpoint *b; | |
315 | char *p; | |
316 | register int bnum; | |
317 | struct command_line *l; | |
318 | ||
319 | /* If we allowed this, we would have problems with when to | |
320 | free the storage, if we change the commands currently | |
321 | being read from. */ | |
322 | ||
323 | if (executing_breakpoint_commands) | |
324 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
325 | ||
326 | p = arg; | |
327 | bnum = get_number (&p); | |
328 | if (p && *p) | |
329 | error ("Unexpected extra arguments following breakpoint number."); | |
330 | ||
331 | ALL_BREAKPOINTS (b) | |
332 | if (b->number == bnum) | |
333 | { | |
bdbd5f50 | 334 | if (from_tty && input_from_terminal_p ()) |
9b280a7f | 335 | printf_filtered ("Type commands for when breakpoint %d is hit, one per line.\n\ |
bd5635a1 | 336 | End with a line saying just \"end\".\n", bnum); |
bd5635a1 RP |
337 | l = read_command_lines (); |
338 | free_command_lines (&b->commands); | |
339 | b->commands = l; | |
6c803036 | 340 | breakpoints_changed (); |
bd5635a1 RP |
341 | return; |
342 | } | |
343 | error ("No breakpoint number %d.", bnum); | |
344 | } | |
345 | \f | |
31ef19fc JK |
346 | extern int memory_breakpoint_size; /* from mem-break.c */ |
347 | ||
348 | /* Like target_read_memory() but if breakpoints are inserted, return | |
30875e1c SG |
349 | the shadow contents instead of the breakpoints themselves. |
350 | ||
351 | Read "memory data" from whatever target or inferior we have. | |
352 | Returns zero if successful, errno value if not. EIO is used | |
353 | for address out of bounds. If breakpoints are inserted, returns | |
354 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
355 | ||
31ef19fc JK |
356 | int |
357 | read_memory_nobpt (memaddr, myaddr, len) | |
358 | CORE_ADDR memaddr; | |
359 | char *myaddr; | |
360 | unsigned len; | |
361 | { | |
362 | int status; | |
363 | struct breakpoint *b; | |
364 | ||
365 | if (memory_breakpoint_size < 0) | |
5af4f5f6 JK |
366 | /* No breakpoints on this machine. FIXME: This should be |
367 | dependent on the debugging target. Probably want | |
368 | target_insert_breakpoint to return a size, saying how many | |
369 | bytes of the shadow contents are used, or perhaps have | |
370 | something like target_xfer_shadow. */ | |
31ef19fc JK |
371 | return target_read_memory (memaddr, myaddr, len); |
372 | ||
373 | ALL_BREAKPOINTS (b) | |
374 | { | |
999dd04b JL |
375 | if (b->type == bp_watchpoint |
376 | || b->type == bp_hardware_watchpoint | |
11054881 KH |
377 | || b->type == bp_read_watchpoint |
378 | || b->type == bp_access_watchpoint | |
999dd04b | 379 | || !b->inserted) |
31ef19fc JK |
380 | continue; |
381 | else if (b->address + memory_breakpoint_size <= memaddr) | |
382 | /* The breakpoint is entirely before the chunk of memory | |
383 | we are reading. */ | |
384 | continue; | |
385 | else if (b->address >= memaddr + len) | |
386 | /* The breakpoint is entirely after the chunk of memory we | |
387 | are reading. */ | |
388 | continue; | |
389 | else | |
390 | { | |
391 | /* Copy the breakpoint from the shadow contents, and recurse | |
392 | for the things before and after. */ | |
393 | ||
394 | /* Addresses and length of the part of the breakpoint that | |
395 | we need to copy. */ | |
396 | CORE_ADDR membpt = b->address; | |
397 | unsigned int bptlen = memory_breakpoint_size; | |
398 | /* Offset within shadow_contents. */ | |
399 | int bptoffset = 0; | |
400 | ||
401 | if (membpt < memaddr) | |
402 | { | |
403 | /* Only copy the second part of the breakpoint. */ | |
404 | bptlen -= memaddr - membpt; | |
405 | bptoffset = memaddr - membpt; | |
406 | membpt = memaddr; | |
407 | } | |
408 | ||
409 | if (membpt + bptlen > memaddr + len) | |
410 | { | |
411 | /* Only copy the first part of the breakpoint. */ | |
412 | bptlen -= (membpt + bptlen) - (memaddr + len); | |
413 | } | |
414 | ||
4ed3a9ea FF |
415 | memcpy (myaddr + membpt - memaddr, |
416 | b->shadow_contents + bptoffset, bptlen); | |
31ef19fc JK |
417 | |
418 | if (membpt > memaddr) | |
419 | { | |
420 | /* Copy the section of memory before the breakpoint. */ | |
421 | status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr); | |
422 | if (status != 0) | |
423 | return status; | |
424 | } | |
425 | ||
426 | if (membpt + bptlen < memaddr + len) | |
427 | { | |
428 | /* Copy the section of memory after the breakpoint. */ | |
429 | status = read_memory_nobpt | |
430 | (membpt + bptlen, | |
431 | myaddr + membpt + bptlen - memaddr, | |
432 | memaddr + len - (membpt + bptlen)); | |
433 | if (status != 0) | |
434 | return status; | |
435 | } | |
436 | return 0; | |
437 | } | |
438 | } | |
439 | /* Nothing overlaps. Just call read_memory_noerr. */ | |
440 | return target_read_memory (memaddr, myaddr, len); | |
441 | } | |
442 | \f | |
bd5635a1 RP |
443 | /* insert_breakpoints is used when starting or continuing the program. |
444 | remove_breakpoints is used when the program stops. | |
445 | Both return zero if successful, | |
446 | or an `errno' value if could not write the inferior. */ | |
447 | ||
448 | int | |
449 | insert_breakpoints () | |
450 | { | |
451 | register struct breakpoint *b; | |
452 | int val = 0; | |
453 | int disabled_breaks = 0; | |
454 | ||
455 | ALL_BREAKPOINTS (b) | |
30875e1c | 456 | if (b->type != bp_watchpoint |
999dd04b | 457 | && b->type != bp_hardware_watchpoint |
11054881 KH |
458 | && b->type != bp_read_watchpoint |
459 | && b->type != bp_access_watchpoint | |
bd5635a1 RP |
460 | && b->enable != disabled |
461 | && ! b->inserted | |
462 | && ! b->duplicate) | |
463 | { | |
11054881 KH |
464 | if (b->type == bp_hardware_breakpoint) |
465 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
466 | else | |
467 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
bd5635a1 RP |
468 | if (val) |
469 | { | |
470 | /* Can't set the breakpoint. */ | |
471 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
472 | if (DISABLE_UNSETTABLE_BREAK (b->address)) | |
473 | { | |
474 | val = 0; | |
475 | b->enable = disabled; | |
476 | if (!disabled_breaks) | |
477 | { | |
05052b63 | 478 | target_terminal_ours_for_output (); |
199b2450 | 479 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 480 | "Cannot insert breakpoint %d:\n", b->number); |
bd5635a1 RP |
481 | printf_filtered ("Disabling shared library breakpoints:\n"); |
482 | } | |
483 | disabled_breaks = 1; | |
484 | printf_filtered ("%d ", b->number); | |
485 | } | |
486 | else | |
487 | #endif | |
488 | { | |
05052b63 | 489 | target_terminal_ours_for_output (); |
199b2450 | 490 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
d3b9c0df | 491 | #ifdef ONE_PROCESS_WRITETEXT |
199b2450 | 492 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 493 | "The same program may be running in another process.\n"); |
d3b9c0df | 494 | #endif |
bd5635a1 RP |
495 | memory_error (val, b->address); /* which bombs us out */ |
496 | } | |
497 | } | |
498 | else | |
499 | b->inserted = 1; | |
500 | } | |
11054881 KH |
501 | else if ((b->type == bp_hardware_watchpoint || |
502 | b->type == bp_read_watchpoint || | |
503 | b->type == bp_access_watchpoint) | |
999dd04b JL |
504 | && b->enable == enabled |
505 | && ! b->inserted | |
506 | && ! b->duplicate) | |
507 | { | |
706dc3ce | 508 | struct frame_info *saved_frame; |
999dd04b JL |
509 | int saved_level, within_current_scope; |
510 | value_ptr mark = value_mark (); | |
511 | value_ptr v; | |
512 | ||
513 | /* Save the current frame and level so we can restore it after | |
514 | evaluating the watchpoint expression on its own frame. */ | |
515 | saved_frame = selected_frame; | |
516 | saved_level = selected_frame_level; | |
517 | ||
518 | /* Determine if the watchpoint is within scope. */ | |
519 | if (b->exp_valid_block == NULL) | |
520 | within_current_scope = 1; | |
521 | else | |
522 | { | |
706dc3ce JL |
523 | struct frame_info *fi = |
524 | find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
525 | within_current_scope = (fi != NULL); | |
999dd04b | 526 | if (within_current_scope) |
706dc3ce | 527 | select_frame (fi, -1); |
999dd04b JL |
528 | } |
529 | ||
530 | if (within_current_scope) | |
531 | { | |
532 | /* Evaluate the expression and cut the chain of values | |
533 | produced off from the value chain. */ | |
534 | v = evaluate_expression (b->exp); | |
535 | value_release_to_mark (mark); | |
536 | ||
537 | b->val_chain = v; | |
538 | b->inserted = 1; | |
539 | ||
540 | /* Look at each value on the value chain. */ | |
541 | for ( ; v; v=v->next) | |
542 | { | |
543 | /* If it's a memory location, then we must watch it. */ | |
544 | if (v->lval == lval_memory) | |
545 | { | |
11054881 | 546 | int addr, len, type; |
999dd04b JL |
547 | |
548 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
549 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 KH |
550 | type = 0; |
551 | if (b->type == bp_read_watchpoint) | |
552 | type = 1; | |
553 | else if (b->type == bp_access_watchpoint) | |
554 | type = 2; | |
555 | ||
556 | val = target_insert_watchpoint (addr, len, type); | |
999dd04b JL |
557 | if (val == -1) |
558 | { | |
559 | b->inserted = 0; | |
560 | break; | |
561 | } | |
562 | val = 0; | |
563 | } | |
564 | } | |
565 | /* Failure to insert a watchpoint on any memory value in the | |
566 | value chain brings us here. */ | |
567 | if (!b->inserted) | |
568 | warning ("Hardware watchpoint %d: Could not insert watchpoint\n", | |
569 | b->number); | |
570 | } | |
571 | else | |
572 | { | |
573 | printf_filtered ("\ | |
574 | Hardware watchpoint %d deleted because the program has left the block in\n\ | |
575 | which its expression is valid.\n", b->number); | |
576 | if (b->related_breakpoint) | |
577 | delete_breakpoint (b->related_breakpoint); | |
578 | delete_breakpoint (b); | |
579 | } | |
580 | ||
581 | /* Restore the frame and level. */ | |
582 | select_frame (saved_frame, saved_level); | |
583 | } | |
bd5635a1 RP |
584 | if (disabled_breaks) |
585 | printf_filtered ("\n"); | |
586 | return val; | |
587 | } | |
588 | ||
999dd04b | 589 | |
bd5635a1 RP |
590 | int |
591 | remove_breakpoints () | |
592 | { | |
593 | register struct breakpoint *b; | |
594 | int val; | |
595 | ||
bd5635a1 | 596 | ALL_BREAKPOINTS (b) |
999dd04b JL |
597 | { |
598 | if (b->inserted) | |
599 | { | |
600 | val = remove_breakpoint (b); | |
601 | if (val != 0) | |
602 | return val; | |
603 | } | |
604 | } | |
605 | return 0; | |
606 | } | |
bd5635a1 | 607 | |
999dd04b JL |
608 | |
609 | static int | |
610 | remove_breakpoint (b) | |
611 | struct breakpoint *b; | |
612 | { | |
613 | int val; | |
614 | ||
615 | if (b->type != bp_watchpoint | |
11054881 KH |
616 | && b->type != bp_hardware_watchpoint |
617 | && b->type != bp_read_watchpoint | |
618 | && b->type != bp_access_watchpoint) | |
999dd04b | 619 | { |
11054881 KH |
620 | if (b->type == bp_hardware_breakpoint) |
621 | val = target_remove_hw_breakpoint(b->address, b->shadow_contents); | |
622 | else | |
623 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
999dd04b JL |
624 | if (val) |
625 | return val; | |
626 | b->inserted = 0; | |
627 | } | |
11054881 KH |
628 | else if ((b->type == bp_hardware_watchpoint || |
629 | b->type == bp_read_watchpoint || | |
630 | b->type == bp_access_watchpoint) | |
999dd04b JL |
631 | && b->enable == enabled |
632 | && ! b->duplicate) | |
633 | { | |
634 | value_ptr v, n; | |
635 | ||
636 | b->inserted = 0; | |
637 | /* Walk down the saved value chain. */ | |
638 | for (v = b->val_chain; v; v = v->next) | |
639 | { | |
640 | /* For each memory reference remove the watchpoint | |
641 | at that address. */ | |
642 | if (v->lval == lval_memory) | |
643 | { | |
644 | int addr, len; | |
645 | ||
646 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
647 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 | 648 | val = target_remove_watchpoint (addr, len, b->type); |
999dd04b JL |
649 | if (val == -1) |
650 | b->inserted = 1; | |
651 | val = 0; | |
652 | } | |
653 | } | |
654 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
655 | if (b->inserted) | |
656 | error ("Hardware watchpoint %d: Could not remove watchpoint\n", | |
657 | b->number); | |
658 | ||
659 | /* Free the saved value chain. We will construct a new one | |
660 | the next time the watchpoint is inserted. */ | |
661 | for (v = b->val_chain; v; v = n) | |
662 | { | |
663 | n = v->next; | |
664 | value_free (v); | |
665 | } | |
666 | b->val_chain = NULL; | |
667 | } | |
bd5635a1 RP |
668 | return 0; |
669 | } | |
670 | ||
cf3e377e | 671 | /* Clear the "inserted" flag in all breakpoints. */ |
bd5635a1 RP |
672 | |
673 | void | |
674 | mark_breakpoints_out () | |
675 | { | |
676 | register struct breakpoint *b; | |
677 | ||
678 | ALL_BREAKPOINTS (b) | |
679 | b->inserted = 0; | |
680 | } | |
681 | ||
cf3e377e JK |
682 | /* Clear the "inserted" flag in all breakpoints and delete any breakpoints |
683 | which should go away between runs of the program. */ | |
684 | ||
685 | void | |
686 | breakpoint_init_inferior () | |
687 | { | |
688 | register struct breakpoint *b, *temp; | |
689 | ||
690 | ALL_BREAKPOINTS_SAFE (b, temp) | |
691 | { | |
692 | b->inserted = 0; | |
693 | ||
694 | /* If the call dummy breakpoint is at the entry point it will | |
695 | cause problems when the inferior is rerun, so we better | |
696 | get rid of it. */ | |
697 | if (b->type == bp_call_dummy) | |
698 | delete_breakpoint (b); | |
999dd04b JL |
699 | |
700 | /* Likewise for scope breakpoints. */ | |
701 | if (b->type == bp_watchpoint_scope) | |
702 | delete_breakpoint (b); | |
703 | ||
704 | /* Likewise for watchpoints on local expressions. */ | |
11054881 KH |
705 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint || |
706 | b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) | |
999dd04b JL |
707 | && b->exp_valid_block != NULL) |
708 | delete_breakpoint (b); | |
cf3e377e JK |
709 | } |
710 | } | |
711 | ||
bd5635a1 RP |
712 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. |
713 | When continuing from a location with a breakpoint, | |
714 | we actually single step once before calling insert_breakpoints. */ | |
715 | ||
716 | int | |
717 | breakpoint_here_p (pc) | |
718 | CORE_ADDR pc; | |
719 | { | |
720 | register struct breakpoint *b; | |
721 | ||
722 | ALL_BREAKPOINTS (b) | |
723 | if (b->enable != disabled && b->address == pc) | |
724 | return 1; | |
725 | ||
726 | return 0; | |
727 | } | |
199b2450 | 728 | |
05052b63 JK |
729 | /* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY |
730 | because figuring out the saved SP would take too much time, at least using | |
731 | get_saved_register on the 68k. This means that for this function to | |
732 | work right a port must use the bp_call_dummy breakpoint. */ | |
733 | ||
734 | int | |
735 | frame_in_dummy (frame) | |
706dc3ce | 736 | struct frame_info *frame; |
05052b63 JK |
737 | { |
738 | struct breakpoint *b; | |
739 | ||
d7e7e851 | 740 | #ifdef CALL_DUMMY |
05052b63 JK |
741 | ALL_BREAKPOINTS (b) |
742 | { | |
d7e7e851 JK |
743 | static unsigned LONGEST dummy[] = CALL_DUMMY; |
744 | ||
05052b63 | 745 | if (b->type == bp_call_dummy |
d7e7e851 JK |
746 | && b->frame == frame->frame |
747 | ||
748 | /* We need to check the PC as well as the frame on the sparc, | |
749 | for signals.exp in the testsuite. */ | |
750 | && (frame->pc | |
751 | >= (b->address | |
752 | - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE)) | |
753 | && frame->pc <= b->address) | |
05052b63 JK |
754 | return 1; |
755 | } | |
d7e7e851 | 756 | #endif /* CALL_DUMMY */ |
05052b63 JK |
757 | return 0; |
758 | } | |
759 | ||
199b2450 TL |
760 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC |
761 | is valid for process/thread PID. */ | |
762 | ||
763 | int | |
764 | breakpoint_thread_match (pc, pid) | |
765 | CORE_ADDR pc; | |
766 | int pid; | |
767 | { | |
768 | struct breakpoint *b; | |
769 | int thread; | |
770 | ||
771 | thread = pid_to_thread_id (pid); | |
772 | ||
773 | ALL_BREAKPOINTS (b) | |
774 | if (b->enable != disabled | |
775 | && b->address == pc | |
776 | && (b->thread == -1 || b->thread == thread)) | |
777 | return 1; | |
778 | ||
779 | return 0; | |
780 | } | |
781 | ||
bd5635a1 RP |
782 | \f |
783 | /* bpstat stuff. External routines' interfaces are documented | |
784 | in breakpoint.h. */ | |
30875e1c SG |
785 | |
786 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
787 | Also free any storage that is part of a bpstat. */ | |
788 | ||
bd5635a1 RP |
789 | void |
790 | bpstat_clear (bsp) | |
791 | bpstat *bsp; | |
792 | { | |
793 | bpstat p; | |
794 | bpstat q; | |
795 | ||
796 | if (bsp == 0) | |
797 | return; | |
798 | p = *bsp; | |
799 | while (p != NULL) | |
800 | { | |
801 | q = p->next; | |
802 | if (p->old_val != NULL) | |
803 | value_free (p->old_val); | |
c8950965 | 804 | free ((PTR)p); |
bd5635a1 RP |
805 | p = q; |
806 | } | |
807 | *bsp = NULL; | |
808 | } | |
809 | ||
30875e1c SG |
810 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
811 | is part of the bpstat is copied as well. */ | |
812 | ||
bd5635a1 RP |
813 | bpstat |
814 | bpstat_copy (bs) | |
815 | bpstat bs; | |
816 | { | |
817 | bpstat p = NULL; | |
818 | bpstat tmp; | |
fee933f1 | 819 | bpstat retval = NULL; |
bd5635a1 RP |
820 | |
821 | if (bs == NULL) | |
822 | return bs; | |
823 | ||
824 | for (; bs != NULL; bs = bs->next) | |
825 | { | |
826 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4ed3a9ea | 827 | memcpy (tmp, bs, sizeof (*tmp)); |
bd5635a1 RP |
828 | if (p == NULL) |
829 | /* This is the first thing in the chain. */ | |
830 | retval = tmp; | |
831 | else | |
832 | p->next = tmp; | |
833 | p = tmp; | |
834 | } | |
835 | p->next = NULL; | |
836 | return retval; | |
837 | } | |
838 | ||
30875e1c SG |
839 | /* Find the bpstat associated with this breakpoint */ |
840 | ||
841 | bpstat | |
842 | bpstat_find_breakpoint(bsp, breakpoint) | |
843 | bpstat bsp; | |
844 | struct breakpoint *breakpoint; | |
845 | { | |
846 | if (bsp == NULL) return NULL; | |
847 | ||
848 | for (;bsp != NULL; bsp = bsp->next) { | |
849 | if (bsp->breakpoint_at == breakpoint) return bsp; | |
850 | } | |
851 | return NULL; | |
852 | } | |
853 | ||
854 | /* Return the breakpoint number of the first breakpoint we are stopped | |
855 | at. *BSP upon return is a bpstat which points to the remaining | |
856 | breakpoints stopped at (but which is not guaranteed to be good for | |
857 | anything but further calls to bpstat_num). | |
858 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
859 | ||
bd5635a1 RP |
860 | int |
861 | bpstat_num (bsp) | |
862 | bpstat *bsp; | |
863 | { | |
864 | struct breakpoint *b; | |
865 | ||
866 | if ((*bsp) == NULL) | |
867 | return 0; /* No more breakpoint values */ | |
868 | else | |
869 | { | |
870 | b = (*bsp)->breakpoint_at; | |
871 | *bsp = (*bsp)->next; | |
872 | if (b == NULL) | |
873 | return -1; /* breakpoint that's been deleted since */ | |
874 | else | |
875 | return b->number; /* We have its number */ | |
876 | } | |
877 | } | |
878 | ||
30875e1c SG |
879 | /* Modify BS so that the actions will not be performed. */ |
880 | ||
bd5635a1 RP |
881 | void |
882 | bpstat_clear_actions (bs) | |
883 | bpstat bs; | |
884 | { | |
885 | for (; bs != NULL; bs = bs->next) | |
886 | { | |
887 | bs->commands = NULL; | |
888 | if (bs->old_val != NULL) | |
889 | { | |
890 | value_free (bs->old_val); | |
891 | bs->old_val = NULL; | |
892 | } | |
893 | } | |
894 | } | |
895 | ||
bdbd5f50 JG |
896 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
897 | /* ARGSUSED */ | |
898 | static void | |
899 | cleanup_executing_breakpoints (ignore) | |
900 | int ignore; | |
901 | { | |
902 | executing_breakpoint_commands = 0; | |
903 | } | |
904 | ||
bd5635a1 RP |
905 | /* Execute all the commands associated with all the breakpoints at this |
906 | location. Any of these commands could cause the process to proceed | |
907 | beyond this point, etc. We look out for such changes by checking | |
908 | the global "breakpoint_proceeded" after each command. */ | |
30875e1c | 909 | |
bd5635a1 RP |
910 | void |
911 | bpstat_do_actions (bsp) | |
912 | bpstat *bsp; | |
913 | { | |
914 | bpstat bs; | |
bdbd5f50 | 915 | struct cleanup *old_chain; |
e8bf33c4 | 916 | struct command_line *cmd; |
bdbd5f50 JG |
917 | |
918 | executing_breakpoint_commands = 1; | |
919 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
bd5635a1 RP |
920 | |
921 | top: | |
922 | bs = *bsp; | |
923 | ||
bd5635a1 RP |
924 | breakpoint_proceeded = 0; |
925 | for (; bs != NULL; bs = bs->next) | |
926 | { | |
e8bf33c4 JK |
927 | cmd = bs->commands; |
928 | while (cmd != NULL) | |
bd5635a1 | 929 | { |
0f8cdd9b | 930 | execute_control_command (cmd); |
e8bf33c4 | 931 | cmd = cmd->next; |
bd5635a1 | 932 | } |
e8bf33c4 JK |
933 | if (breakpoint_proceeded) |
934 | /* The inferior is proceeded by the command; bomb out now. | |
935 | The bpstat chain has been blown away by wait_for_inferior. | |
936 | But since execution has stopped again, there is a new bpstat | |
937 | to look at, so start over. */ | |
938 | goto top; | |
939 | else | |
940 | bs->commands = NULL; | |
bd5635a1 | 941 | } |
bd5635a1 RP |
942 | |
943 | executing_breakpoint_commands = 0; | |
bdbd5f50 | 944 | discard_cleanups (old_chain); |
bd5635a1 RP |
945 | } |
946 | ||
8af68e4e JK |
947 | /* This is the normal print_it function for a bpstat. In the future, |
948 | much of this logic could (should?) be moved to bpstat_stop_status, | |
949 | by having it set different print_it functions. */ | |
30875e1c | 950 | |
8af68e4e JK |
951 | static int |
952 | print_it_normal (bs) | |
bd5635a1 RP |
953 | bpstat bs; |
954 | { | |
955 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
956 | which has since been deleted. */ | |
8af68e4e | 957 | if (bs->breakpoint_at == NULL |
30875e1c | 958 | || (bs->breakpoint_at->type != bp_breakpoint |
11054881 | 959 | && bs->breakpoint_at->type != bp_hardware_breakpoint |
999dd04b | 960 | && bs->breakpoint_at->type != bp_watchpoint |
11054881 KH |
961 | && bs->breakpoint_at->type != bp_read_watchpoint |
962 | && bs->breakpoint_at->type != bp_access_watchpoint | |
999dd04b | 963 | && bs->breakpoint_at->type != bp_hardware_watchpoint)) |
bd5635a1 | 964 | return 0; |
bd5635a1 | 965 | |
11054881 KH |
966 | if (bs->breakpoint_at->type == bp_breakpoint || |
967 | bs->breakpoint_at->type == bp_hardware_breakpoint) | |
bd5635a1 RP |
968 | { |
969 | /* I think the user probably only wants to see one breakpoint | |
970 | number, not all of them. */ | |
f2d9c058 | 971 | annotate_breakpoint (bs->breakpoint_at->number); |
bd5635a1 RP |
972 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); |
973 | return 0; | |
974 | } | |
11054881 KH |
975 | else if ((bs->old_val != NULL) && |
976 | (bs->breakpoint_at->type == bp_watchpoint || | |
977 | bs->breakpoint_at->type == bp_access_watchpoint || | |
978 | bs->breakpoint_at->type == bp_hardware_watchpoint)) | |
bd5635a1 | 979 | { |
f2d9c058 | 980 | annotate_watchpoint (bs->breakpoint_at->number); |
11054881 | 981 | mention (bs->breakpoint_at); |
bd5635a1 | 982 | printf_filtered ("\nOld value = "); |
199b2450 | 983 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); |
bd5635a1 | 984 | printf_filtered ("\nNew value = "); |
199b2450 | 985 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
bd5635a1 RP |
986 | Val_pretty_default); |
987 | printf_filtered ("\n"); | |
988 | value_free (bs->old_val); | |
989 | bs->old_val = NULL; | |
bd2f0c85 JL |
990 | /* More than one watchpoint may have been triggered. */ |
991 | return -1; | |
bd5635a1 | 992 | } |
11054881 KH |
993 | else if (bs->breakpoint_at->type == bp_access_watchpoint || |
994 | bs->breakpoint_at->type == bp_read_watchpoint) | |
995 | { | |
996 | mention (bs->breakpoint_at); | |
997 | printf_filtered ("\nValue = "); | |
998 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
999 | Val_pretty_default); | |
1000 | printf_filtered ("\n"); | |
1001 | return -1; | |
1002 | } | |
8af68e4e JK |
1003 | /* We can't deal with it. Maybe another member of the bpstat chain can. */ |
1004 | return -1; | |
1005 | } | |
1006 | ||
1007 | /* Print a message indicating what happened. Returns nonzero to | |
1008 | say that only the source line should be printed after this (zero | |
1009 | return means print the frame as well as the source line). */ | |
3f031adf | 1010 | /* Currently we always return zero. */ |
8af68e4e JK |
1011 | int |
1012 | bpstat_print (bs) | |
1013 | bpstat bs; | |
1014 | { | |
1015 | int val; | |
1016 | ||
1017 | if (bs == NULL) | |
1018 | return 0; | |
bd5635a1 | 1019 | |
8af68e4e JK |
1020 | val = (*bs->print_it) (bs); |
1021 | if (val >= 0) | |
1022 | return val; | |
1023 | ||
fcb887ff JK |
1024 | /* Maybe another breakpoint in the chain caused us to stop. |
1025 | (Currently all watchpoints go on the bpstat whether hit or | |
1026 | not. That probably could (should) be changed, provided care is taken | |
1027 | with respect to bpstat_explains_signal). */ | |
1028 | if (bs->next) | |
1029 | return bpstat_print (bs->next); | |
1030 | ||
cabd4da6 | 1031 | /* We reached the end of the chain without printing anything. */ |
bd5635a1 RP |
1032 | return 0; |
1033 | } | |
1034 | ||
1035 | /* Evaluate the expression EXP and return 1 if value is zero. | |
1036 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
bdbd5f50 | 1037 | The argument is a "struct expression *" that has been cast to char * to |
bd5635a1 RP |
1038 | make it pass through catch_errors. */ |
1039 | ||
1040 | static int | |
1041 | breakpoint_cond_eval (exp) | |
bdbd5f50 | 1042 | char *exp; |
bd5635a1 | 1043 | { |
11054881 KH |
1044 | value_ptr mark = value_mark (); |
1045 | int i = !value_true (evaluate_expression ((struct expression *)exp)); | |
1046 | value_free_to_mark (mark); | |
1047 | return i; | |
bd5635a1 RP |
1048 | } |
1049 | ||
1050 | /* Allocate a new bpstat and chain it to the current one. */ | |
1051 | ||
1052 | static bpstat | |
1053 | bpstat_alloc (b, cbs) | |
1054 | register struct breakpoint *b; | |
1055 | bpstat cbs; /* Current "bs" value */ | |
1056 | { | |
1057 | bpstat bs; | |
1058 | ||
1059 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
1060 | cbs->next = bs; | |
1061 | bs->breakpoint_at = b; | |
1062 | /* If the condition is false, etc., don't do the commands. */ | |
1063 | bs->commands = NULL; | |
bd5635a1 | 1064 | bs->old_val = NULL; |
8af68e4e | 1065 | bs->print_it = print_it_normal; |
bd5635a1 RP |
1066 | return bs; |
1067 | } | |
fa99ebe1 | 1068 | \f |
8af68e4e JK |
1069 | /* Possible return values for watchpoint_check (this can't be an enum |
1070 | because of check_errors). */ | |
999dd04b JL |
1071 | /* The watchpoint has been deleted. */ |
1072 | #define WP_DELETED 1 | |
8af68e4e JK |
1073 | /* The value has changed. */ |
1074 | #define WP_VALUE_CHANGED 2 | |
1075 | /* The value has not changed. */ | |
1076 | #define WP_VALUE_NOT_CHANGED 3 | |
1077 | ||
e8bf33c4 JK |
1078 | #define BP_TEMPFLAG 1 |
1079 | #define BP_HARDWAREFLAG 2 | |
1080 | ||
8af68e4e | 1081 | /* Check watchpoint condition. */ |
557f3a0e | 1082 | |
8af68e4e JK |
1083 | static int |
1084 | watchpoint_check (p) | |
fe675038 | 1085 | char *p; |
8af68e4e JK |
1086 | { |
1087 | bpstat bs = (bpstat) p; | |
11054881 | 1088 | struct breakpoint *b; |
2b576293 C |
1089 | struct frame_info *fr; |
1090 | int within_current_scope; | |
999dd04b | 1091 | |
557f3a0e SS |
1092 | b = bs->breakpoint_at; |
1093 | ||
1094 | if (b->exp_valid_block == NULL) | |
8af68e4e | 1095 | within_current_scope = 1; |
fa99ebe1 JK |
1096 | else |
1097 | { | |
706dc3ce JL |
1098 | /* There is no current frame at this moment. If we're going to have |
1099 | any chance of handling watchpoints on local variables, we'll need | |
1100 | the frame chain (so we can determine if we're in scope). */ | |
1101 | reinit_frame_cache(); | |
557f3a0e | 1102 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
999dd04b | 1103 | within_current_scope = (fr != NULL); |
fa99ebe1 JK |
1104 | if (within_current_scope) |
1105 | /* If we end up stopping, the current frame will get selected | |
1106 | in normal_stop. So this call to select_frame won't affect | |
1107 | the user. */ | |
1108 | select_frame (fr, -1); | |
1109 | } | |
1110 | ||
8af68e4e JK |
1111 | if (within_current_scope) |
1112 | { | |
1113 | /* We use value_{,free_to_}mark because it could be a | |
1114 | *long* time before we return to the command level and | |
cef4c2e7 PS |
1115 | call free_all_values. We can't call free_all_values because |
1116 | we might be in the middle of evaluating a function call. */ | |
8af68e4e | 1117 | |
82a2edfb JK |
1118 | value_ptr mark = value_mark (); |
1119 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
557f3a0e | 1120 | if (!value_equal (b->val, new_val)) |
8af68e4e JK |
1121 | { |
1122 | release_value (new_val); | |
1123 | value_free_to_mark (mark); | |
557f3a0e SS |
1124 | bs->old_val = b->val; |
1125 | b->val = new_val; | |
8af68e4e JK |
1126 | /* We will stop here */ |
1127 | return WP_VALUE_CHANGED; | |
1128 | } | |
1129 | else | |
1130 | { | |
1131 | /* Nothing changed, don't do anything. */ | |
1132 | value_free_to_mark (mark); | |
1133 | /* We won't stop here */ | |
1134 | return WP_VALUE_NOT_CHANGED; | |
1135 | } | |
1136 | } | |
1137 | else | |
1138 | { | |
1139 | /* This seems like the only logical thing to do because | |
1140 | if we temporarily ignored the watchpoint, then when | |
1141 | we reenter the block in which it is valid it contains | |
1142 | garbage (in the case of a function, it may have two | |
1143 | garbage values, one before and one after the prologue). | |
1144 | So we can't even detect the first assignment to it and | |
1145 | watch after that (since the garbage may or may not equal | |
1146 | the first value assigned). */ | |
8af68e4e | 1147 | printf_filtered ("\ |
999dd04b | 1148 | Watchpoint %d deleted because the program has left the block in\n\ |
8af68e4e | 1149 | which its expression is valid.\n", bs->breakpoint_at->number); |
557f3a0e SS |
1150 | if (b->related_breakpoint) |
1151 | delete_breakpoint (b->related_breakpoint); | |
1152 | delete_breakpoint (b); | |
999dd04b | 1153 | |
999dd04b | 1154 | return WP_DELETED; |
8af68e4e JK |
1155 | } |
1156 | } | |
1157 | ||
1158 | /* This is used when everything which needs to be printed has | |
1159 | already been printed. But we still want to print the frame. */ | |
1160 | static int | |
cabd4da6 | 1161 | print_it_done (bs) |
8af68e4e JK |
1162 | bpstat bs; |
1163 | { | |
1164 | return 0; | |
1165 | } | |
1166 | ||
cabd4da6 JK |
1167 | /* This is used when nothing should be printed for this bpstat entry. */ |
1168 | ||
1169 | static int | |
1170 | print_it_noop (bs) | |
1171 | bpstat bs; | |
1172 | { | |
1173 | return -1; | |
1174 | } | |
1175 | ||
cb6b0202 | 1176 | /* Get a bpstat associated with having just stopped at address *PC |
706dc3ce | 1177 | and frame address CORE_ADDRESS. Update *PC to point at the |
cb6b0202 JK |
1178 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero |
1179 | if this is known to not be a real breakpoint (it could still be a | |
1180 | watchpoint, though). */ | |
1181 | ||
bd5635a1 RP |
1182 | /* Determine whether we stopped at a breakpoint, etc, or whether we |
1183 | don't understand this stop. Result is a chain of bpstat's such that: | |
1184 | ||
1185 | if we don't understand the stop, the result is a null pointer. | |
1186 | ||
cb6b0202 | 1187 | if we understand why we stopped, the result is not null. |
bd5635a1 RP |
1188 | |
1189 | Each element of the chain refers to a particular breakpoint or | |
1190 | watchpoint at which we have stopped. (We may have stopped for | |
2d313932 | 1191 | several reasons concurrently.) |
bd5635a1 RP |
1192 | |
1193 | Each element of the chain has valid next, breakpoint_at, | |
1194 | commands, FIXME??? fields. | |
1195 | ||
1196 | */ | |
1197 | ||
bd5635a1 | 1198 | bpstat |
16726dd1 | 1199 | bpstat_stop_status (pc, not_a_breakpoint) |
bd5635a1 | 1200 | CORE_ADDR *pc; |
cb6b0202 | 1201 | int not_a_breakpoint; |
bd5635a1 RP |
1202 | { |
1203 | register struct breakpoint *b; | |
bd5635a1 | 1204 | CORE_ADDR bp_addr; |
bdbd5f50 | 1205 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1206 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
1207 | int real_breakpoint = 0; | |
bdbd5f50 | 1208 | #endif |
bd5635a1 | 1209 | /* Root of the chain of bpstat's */ |
e8bf33c4 | 1210 | struct bpstats root_bs[1]; |
bd5635a1 RP |
1211 | /* Pointer to the last thing in the chain currently. */ |
1212 | bpstat bs = root_bs; | |
11054881 KH |
1213 | static char message1[] = |
1214 | "Error evaluating expression for watchpoint %d\n"; | |
1215 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 RP |
1216 | |
1217 | /* Get the address where the breakpoint would have been. */ | |
1218 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
1219 | ||
1220 | ALL_BREAKPOINTS (b) | |
1221 | { | |
bd5635a1 RP |
1222 | if (b->enable == disabled) |
1223 | continue; | |
30875e1c | 1224 | |
999dd04b JL |
1225 | if (b->type != bp_watchpoint |
1226 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1227 | && b->type != bp_read_watchpoint |
1228 | && b->type != bp_access_watchpoint | |
1229 | && b->type != bp_hardware_breakpoint | |
999dd04b | 1230 | && b->address != bp_addr) |
bd5635a1 RP |
1231 | continue; |
1232 | ||
11054881 KH |
1233 | if (b->type == bp_hardware_breakpoint |
1234 | && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK)) | |
1235 | continue; | |
1236 | ||
999dd04b JL |
1237 | if (b->type != bp_watchpoint |
1238 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1239 | && b->type != bp_read_watchpoint |
1240 | && b->type != bp_access_watchpoint | |
999dd04b | 1241 | && not_a_breakpoint) |
cb6b0202 JK |
1242 | continue; |
1243 | ||
30875e1c SG |
1244 | /* Come here if it's a watchpoint, or if the break address matches */ |
1245 | ||
9f577285 SS |
1246 | ++(b->hit_count); |
1247 | ||
bd5635a1 RP |
1248 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ |
1249 | ||
cabd4da6 JK |
1250 | bs->stop = 1; |
1251 | bs->print = 1; | |
bd5635a1 | 1252 | |
11054881 | 1253 | sprintf (message, message1, b->number); |
999dd04b | 1254 | if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) |
bd5635a1 | 1255 | { |
fe675038 JK |
1256 | switch (catch_errors (watchpoint_check, (char *) bs, message, |
1257 | RETURN_MASK_ALL)) | |
bd5635a1 | 1258 | { |
999dd04b | 1259 | case WP_DELETED: |
8af68e4e | 1260 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1261 | bs->print_it = print_it_done; |
8af68e4e JK |
1262 | /* Stop. */ |
1263 | break; | |
1264 | case WP_VALUE_CHANGED: | |
1265 | /* Stop. */ | |
1266 | break; | |
1267 | case WP_VALUE_NOT_CHANGED: | |
1268 | /* Don't stop. */ | |
cabd4da6 JK |
1269 | bs->print_it = print_it_noop; |
1270 | bs->stop = 0; | |
bd5635a1 | 1271 | continue; |
8af68e4e JK |
1272 | default: |
1273 | /* Can't happen. */ | |
1274 | /* FALLTHROUGH */ | |
1275 | case 0: | |
1276 | /* Error from catch_errors. */ | |
999dd04b JL |
1277 | printf_filtered ("Watchpoint %d deleted.\n", b->number); |
1278 | if (b->related_breakpoint) | |
1279 | delete_breakpoint (b->related_breakpoint); | |
1280 | delete_breakpoint (b); | |
8af68e4e | 1281 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1282 | bs->print_it = print_it_done; |
999dd04b | 1283 | |
8af68e4e JK |
1284 | /* Stop. */ |
1285 | break; | |
bd5635a1 RP |
1286 | } |
1287 | } | |
11054881 KH |
1288 | else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) |
1289 | { | |
1290 | CORE_ADDR addr; | |
1291 | value_ptr v; | |
1292 | int found = 0; | |
1293 | ||
1294 | addr = target_stopped_data_address(); | |
1295 | if (addr == 0) continue; | |
1296 | for (v = b->val_chain; v; v = v->next) | |
1297 | { | |
1298 | if (v->lval == lval_memory) | |
1299 | { | |
1300 | CORE_ADDR vaddr; | |
1301 | ||
1302 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1303 | if (addr == vaddr) | |
1304 | found = 1; | |
1305 | } | |
1306 | } | |
1307 | if (found) | |
1308 | switch (catch_errors (watchpoint_check, (char *) bs, message, | |
1309 | RETURN_MASK_ALL)) | |
1310 | { | |
1311 | case WP_DELETED: | |
1312 | /* We've already printed what needs to be printed. */ | |
1313 | bs->print_it = print_it_done; | |
1314 | /* Stop. */ | |
1315 | break; | |
1316 | case WP_VALUE_CHANGED: | |
1317 | case WP_VALUE_NOT_CHANGED: | |
1318 | /* Stop. */ | |
1319 | break; | |
1320 | default: | |
1321 | /* Can't happen. */ | |
1322 | case 0: | |
1323 | /* Error from catch_errors. */ | |
1324 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
1325 | if (b->related_breakpoint) | |
1326 | delete_breakpoint (b->related_breakpoint); | |
1327 | delete_breakpoint (b); | |
1328 | /* We've already printed what needs to be printed. */ | |
1329 | bs->print_it = print_it_done; | |
1330 | break; | |
1331 | } | |
1332 | } | |
bdbd5f50 | 1333 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1334 | else |
1335 | real_breakpoint = 1; | |
bdbd5f50 | 1336 | #endif |
bd5635a1 | 1337 | |
706dc3ce | 1338 | if (b->frame && b->frame != (get_current_frame ())->frame) |
cabd4da6 | 1339 | bs->stop = 0; |
bd5635a1 RP |
1340 | else |
1341 | { | |
fee933f1 | 1342 | int value_is_zero = 0; |
bd5635a1 RP |
1343 | |
1344 | if (b->cond) | |
1345 | { | |
1346 | /* Need to select the frame, with all that implies | |
1347 | so that the conditions will have the right context. */ | |
1348 | select_frame (get_current_frame (), 0); | |
bdbd5f50 JG |
1349 | value_is_zero |
1350 | = catch_errors (breakpoint_cond_eval, (char *)(b->cond), | |
fe675038 JK |
1351 | "Error in testing breakpoint condition:\n", |
1352 | RETURN_MASK_ALL); | |
06b6c733 | 1353 | /* FIXME-someday, should give breakpoint # */ |
bd5635a1 RP |
1354 | free_all_values (); |
1355 | } | |
bdbd5f50 | 1356 | if (b->cond && value_is_zero) |
bd5635a1 | 1357 | { |
cabd4da6 | 1358 | bs->stop = 0; |
bd5635a1 RP |
1359 | } |
1360 | else if (b->ignore_count > 0) | |
1361 | { | |
1362 | b->ignore_count--; | |
cabd4da6 | 1363 | bs->stop = 0; |
bd5635a1 RP |
1364 | } |
1365 | else | |
1366 | { | |
1367 | /* We will stop here */ | |
30875e1c | 1368 | if (b->disposition == disable) |
bd5635a1 RP |
1369 | b->enable = disabled; |
1370 | bs->commands = b->commands; | |
1371 | if (b->silent) | |
cabd4da6 | 1372 | bs->print = 0; |
2d313932 | 1373 | if (bs->commands && STREQ ("silent", bs->commands->line)) |
bd5635a1 RP |
1374 | { |
1375 | bs->commands = bs->commands->next; | |
cabd4da6 | 1376 | bs->print = 0; |
bd5635a1 RP |
1377 | } |
1378 | } | |
1379 | } | |
cabd4da6 JK |
1380 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
1381 | if (bs->stop == 0 || bs->print == 0) | |
1382 | bs->print_it = print_it_noop; | |
bd5635a1 RP |
1383 | } |
1384 | ||
1385 | bs->next = NULL; /* Terminate the chain */ | |
1386 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
cabd4da6 | 1387 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1388 | if (bs) |
1389 | { | |
bd5635a1 RP |
1390 | if (real_breakpoint) |
1391 | { | |
1392 | *pc = bp_addr; | |
1393 | #if defined (SHIFT_INST_REGS) | |
817ac7f8 | 1394 | SHIFT_INST_REGS(); |
bd5635a1 RP |
1395 | #else /* No SHIFT_INST_REGS. */ |
1396 | write_pc (bp_addr); | |
1397 | #endif /* No SHIFT_INST_REGS. */ | |
1398 | } | |
bd5635a1 | 1399 | } |
cabd4da6 | 1400 | #endif /* DECR_PC_AFTER_BREAK != 0. */ |
999dd04b JL |
1401 | |
1402 | /* The value of a hardware watchpoint hasn't changed, but the | |
1403 | intermediate memory locations we are watching may have. */ | |
11054881 KH |
1404 | if (bs && ! bs->stop && |
1405 | (bs->breakpoint_at->type == bp_hardware_watchpoint || | |
1406 | bs->breakpoint_at->type == bp_read_watchpoint || | |
1407 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
999dd04b JL |
1408 | { |
1409 | remove_breakpoints (); | |
1410 | insert_breakpoints (); | |
1411 | } | |
bd5635a1 RP |
1412 | return bs; |
1413 | } | |
cabd4da6 JK |
1414 | \f |
1415 | /* Tell what to do about this bpstat. */ | |
fe675038 | 1416 | struct bpstat_what |
cabd4da6 JK |
1417 | bpstat_what (bs) |
1418 | bpstat bs; | |
1419 | { | |
1420 | /* Classify each bpstat as one of the following. */ | |
1421 | enum class { | |
fe675038 JK |
1422 | /* This bpstat element has no effect on the main_action. */ |
1423 | no_effect = 0, | |
cabd4da6 JK |
1424 | |
1425 | /* There was a watchpoint, stop but don't print. */ | |
1426 | wp_silent, | |
1427 | ||
1428 | /* There was a watchpoint, stop and print. */ | |
1429 | wp_noisy, | |
1430 | ||
1431 | /* There was a breakpoint but we're not stopping. */ | |
1432 | bp_nostop, | |
1433 | ||
1434 | /* There was a breakpoint, stop but don't print. */ | |
1435 | bp_silent, | |
1436 | ||
1437 | /* There was a breakpoint, stop and print. */ | |
1438 | bp_noisy, | |
1439 | ||
1440 | /* We hit the longjmp breakpoint. */ | |
1441 | long_jump, | |
1442 | ||
1443 | /* We hit the longjmp_resume breakpoint. */ | |
1444 | long_resume, | |
1445 | ||
d7e7e851 JK |
1446 | /* We hit the step_resume breakpoint. */ |
1447 | step_resume, | |
1448 | ||
bcc37718 JK |
1449 | /* We hit the through_sigtramp breakpoint. */ |
1450 | through_sig, | |
1451 | ||
cabd4da6 JK |
1452 | /* This is just used to count how many enums there are. */ |
1453 | class_last | |
1454 | }; | |
1455 | ||
1456 | /* Here is the table which drives this routine. So that we can | |
1457 | format it pretty, we define some abbreviations for the | |
1458 | enum bpstat_what codes. */ | |
1459 | #define keep_c BPSTAT_WHAT_KEEP_CHECKING | |
1460 | #define stop_s BPSTAT_WHAT_STOP_SILENT | |
1461 | #define stop_n BPSTAT_WHAT_STOP_NOISY | |
1462 | #define single BPSTAT_WHAT_SINGLE | |
1463 | #define setlr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
1464 | #define clrlr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
1465 | #define clrlrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
d7e7e851 | 1466 | #define sr BPSTAT_WHAT_STEP_RESUME |
bcc37718 | 1467 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP |
d7e7e851 | 1468 | |
cabd4da6 JK |
1469 | /* "Can't happen." Might want to print an error message. |
1470 | abort() is not out of the question, but chances are GDB is just | |
1471 | a bit confused, not unusable. */ | |
1472 | #define err BPSTAT_WHAT_STOP_NOISY | |
1473 | ||
1474 | /* Given an old action and a class, come up with a new action. */ | |
84d59861 JK |
1475 | /* One interesting property of this table is that wp_silent is the same |
1476 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
1477 | after stopping, the check for whether to step over a breakpoint | |
1478 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
1479 | reference to how we stopped. We retain separate wp_silent and bp_silent | |
1480 | codes in case we want to change that someday. */ | |
d7e7e851 JK |
1481 | |
1482 | /* step_resume entries: a step resume breakpoint overrides another | |
1483 | breakpoint of signal handling (see comment in wait_for_inferior | |
1484 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
bcc37718 JK |
1485 | /* We handle the through_sigtramp_breakpoint the same way; having both |
1486 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
d7e7e851 | 1487 | |
fe675038 | 1488 | static const enum bpstat_what_main_action |
cabd4da6 JK |
1489 | table[(int)class_last][(int)BPSTAT_WHAT_LAST] = |
1490 | { | |
1491 | /* old action */ | |
bcc37718 JK |
1492 | /* keep_c stop_s stop_n single setlr clrlr clrlrs sr ts |
1493 | */ | |
1494 | /*no_effect*/ {keep_c,stop_s,stop_n,single, setlr , clrlr , clrlrs, sr, ts}, | |
1495 | /*wp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts}, | |
1496 | /*wp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts}, | |
1497 | /*bp_nostop*/ {single,stop_s,stop_n,single, setlr , clrlrs, clrlrs, sr, ts}, | |
1498 | /*bp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts}, | |
1499 | /*bp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts}, | |
1500 | /*long_jump*/ {setlr ,stop_s,stop_n,setlr , err , err , err , sr, ts}, | |
1501 | /*long_resume*/ {clrlr ,stop_s,stop_n,clrlrs, err , err , err , sr, ts}, | |
1502 | /*step_resume*/ {sr ,sr ,sr ,sr , sr , sr , sr , sr, ts}, | |
1503 | /*through_sig*/ {ts ,ts ,ts ,ts , ts , ts , ts , ts, ts} | |
cabd4da6 JK |
1504 | }; |
1505 | #undef keep_c | |
1506 | #undef stop_s | |
1507 | #undef stop_n | |
1508 | #undef single | |
1509 | #undef setlr | |
1510 | #undef clrlr | |
1511 | #undef clrlrs | |
1512 | #undef err | |
bcc37718 JK |
1513 | #undef sr |
1514 | #undef ts | |
fe675038 | 1515 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
84d59861 | 1516 | struct bpstat_what retval; |
cabd4da6 | 1517 | |
cef4c2e7 | 1518 | retval.call_dummy = 0; |
cabd4da6 JK |
1519 | for (; bs != NULL; bs = bs->next) |
1520 | { | |
fee933f1 | 1521 | enum class bs_class = no_effect; |
cabd4da6 JK |
1522 | if (bs->breakpoint_at == NULL) |
1523 | /* I suspect this can happen if it was a momentary breakpoint | |
1524 | which has since been deleted. */ | |
1525 | continue; | |
1526 | switch (bs->breakpoint_at->type) | |
1527 | { | |
1528 | case bp_breakpoint: | |
11054881 | 1529 | case bp_hardware_breakpoint: |
cabd4da6 JK |
1530 | case bp_until: |
1531 | case bp_finish: | |
1532 | if (bs->stop) | |
1533 | { | |
1534 | if (bs->print) | |
1535 | bs_class = bp_noisy; | |
1536 | else | |
1537 | bs_class = bp_silent; | |
1538 | } | |
1539 | else | |
1540 | bs_class = bp_nostop; | |
1541 | break; | |
1542 | case bp_watchpoint: | |
999dd04b | 1543 | case bp_hardware_watchpoint: |
11054881 KH |
1544 | case bp_read_watchpoint: |
1545 | case bp_access_watchpoint: | |
cabd4da6 JK |
1546 | if (bs->stop) |
1547 | { | |
1548 | if (bs->print) | |
1549 | bs_class = wp_noisy; | |
1550 | else | |
1551 | bs_class = wp_silent; | |
1552 | } | |
1553 | else | |
fe675038 JK |
1554 | /* There was a watchpoint, but we're not stopping. This requires |
1555 | no further action. */ | |
1556 | bs_class = no_effect; | |
cabd4da6 JK |
1557 | break; |
1558 | case bp_longjmp: | |
1559 | bs_class = long_jump; | |
1560 | break; | |
1561 | case bp_longjmp_resume: | |
1562 | bs_class = long_resume; | |
1563 | break; | |
fe675038 | 1564 | case bp_step_resume: |
fe675038 JK |
1565 | if (bs->stop) |
1566 | { | |
d7e7e851 | 1567 | bs_class = step_resume; |
fe675038 JK |
1568 | } |
1569 | else | |
1570 | /* It is for the wrong frame. */ | |
1571 | bs_class = bp_nostop; | |
bcc37718 JK |
1572 | break; |
1573 | case bp_through_sigtramp: | |
1574 | bs_class = through_sig; | |
fe675038 | 1575 | break; |
999dd04b JL |
1576 | case bp_watchpoint_scope: |
1577 | bs_class = bp_nostop; | |
1578 | break; | |
1579 | ||
84d59861 JK |
1580 | case bp_call_dummy: |
1581 | /* Make sure the action is stop (silent or noisy), so infrun.c | |
1582 | pops the dummy frame. */ | |
1583 | bs_class = bp_silent; | |
1584 | retval.call_dummy = 1; | |
bb7b3800 | 1585 | break; |
cabd4da6 JK |
1586 | } |
1587 | current_action = table[(int)bs_class][(int)current_action]; | |
1588 | } | |
84d59861 JK |
1589 | retval.main_action = current_action; |
1590 | return retval; | |
cabd4da6 | 1591 | } |
bd5635a1 | 1592 | |
30875e1c SG |
1593 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
1594 | without hardware support). This isn't related to a specific bpstat, | |
1595 | just to things like whether watchpoints are set. */ | |
1596 | ||
bd5635a1 RP |
1597 | int |
1598 | bpstat_should_step () | |
1599 | { | |
1600 | struct breakpoint *b; | |
1601 | ALL_BREAKPOINTS (b) | |
30875e1c | 1602 | if (b->enable == enabled && b->type == bp_watchpoint) |
bd5635a1 RP |
1603 | return 1; |
1604 | return 0; | |
1605 | } | |
1606 | \f | |
1607 | /* Print information on breakpoint number BNUM, or -1 if all. | |
1608 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
1609 | is nonzero, process only watchpoints. */ | |
1610 | ||
1611 | static void | |
c8950965 | 1612 | breakpoint_1 (bnum, allflag) |
bd5635a1 | 1613 | int bnum; |
80ba48f5 | 1614 | int allflag; |
bd5635a1 RP |
1615 | { |
1616 | register struct breakpoint *b; | |
1617 | register struct command_line *l; | |
1618 | register struct symbol *sym; | |
1619 | CORE_ADDR last_addr = (CORE_ADDR)-1; | |
30875e1c | 1620 | int found_a_breakpoint = 0; |
11054881 KH |
1621 | static char *bptypes[] = {"breakpoint", "hw breakpoint", |
1622 | "until", "finish", "watchpoint", | |
1623 | "hw watchpoint", "read watchpoint", | |
1624 | "acc watchpoint", "longjmp", | |
999dd04b JL |
1625 | "longjmp resume", "step resume", |
1626 | "watchpoint scope", "call dummy" }; | |
80ba48f5 | 1627 | static char *bpdisps[] = {"del", "dis", "keep"}; |
30875e1c | 1628 | static char bpenables[] = "ny"; |
0a62ff36 | 1629 | char wrap_indent[80]; |
30875e1c | 1630 | |
bd5635a1 | 1631 | ALL_BREAKPOINTS (b) |
30875e1c SG |
1632 | if (bnum == -1 |
1633 | || bnum == b->number) | |
bd5635a1 | 1634 | { |
80ba48f5 SG |
1635 | /* We only print out user settable breakpoints unless the allflag is set. */ |
1636 | if (!allflag | |
1637 | && b->type != bp_breakpoint | |
11054881 | 1638 | && b->type != bp_hardware_breakpoint |
999dd04b | 1639 | && b->type != bp_watchpoint |
11054881 KH |
1640 | && b->type != bp_read_watchpoint |
1641 | && b->type != bp_access_watchpoint | |
999dd04b | 1642 | && b->type != bp_hardware_watchpoint) |
80ba48f5 SG |
1643 | continue; |
1644 | ||
30875e1c | 1645 | if (!found_a_breakpoint++) |
47ebe8fd | 1646 | { |
f2d9c058 KH |
1647 | annotate_breakpoints_headers (); |
1648 | ||
1649 | annotate_field (0); | |
1650 | printf_filtered ("Num "); | |
1651 | annotate_field (1); | |
1652 | printf_filtered ("Type "); | |
1653 | annotate_field (2); | |
1654 | printf_filtered ("Disp "); | |
1655 | annotate_field (3); | |
1656 | printf_filtered ("Enb "); | |
1657 | if (addressprint) | |
1658 | { | |
1659 | annotate_field (4); | |
1660 | printf_filtered ("Address "); | |
1661 | } | |
1662 | annotate_field (5); | |
1663 | printf_filtered ("What\n"); | |
1664 | ||
1665 | annotate_breakpoints_table (); | |
1666 | } | |
1667 | ||
1668 | annotate_record (); | |
1669 | annotate_field (0); | |
1670 | printf_filtered ("%-3d ", b->number); | |
1671 | annotate_field (1); | |
1672 | printf_filtered ("%-14s ", bptypes[(int)b->type]); | |
1673 | annotate_field (2); | |
1674 | printf_filtered ("%-4s ", bpdisps[(int)b->disposition]); | |
1675 | annotate_field (3); | |
47ebe8fd JK |
1676 | printf_filtered ("%-3c ", bpenables[(int)b->enable]); |
1677 | ||
0a62ff36 JK |
1678 | strcpy (wrap_indent, " "); |
1679 | if (addressprint) | |
1680 | strcat (wrap_indent, " "); | |
30875e1c | 1681 | switch (b->type) |
bd5635a1 | 1682 | { |
30875e1c | 1683 | case bp_watchpoint: |
999dd04b | 1684 | case bp_hardware_watchpoint: |
11054881 KH |
1685 | case bp_read_watchpoint: |
1686 | case bp_access_watchpoint: | |
47ebe8fd JK |
1687 | /* Field 4, the address, is omitted (which makes the columns |
1688 | not line up too nicely with the headers, but the effect | |
1689 | is relatively readable). */ | |
9f577285 | 1690 | annotate_field (5); |
199b2450 | 1691 | print_expression (b->exp, gdb_stdout); |
30875e1c | 1692 | break; |
84d59861 | 1693 | |
30875e1c | 1694 | case bp_breakpoint: |
11054881 | 1695 | case bp_hardware_breakpoint: |
80ba48f5 SG |
1696 | case bp_until: |
1697 | case bp_finish: | |
1698 | case bp_longjmp: | |
1699 | case bp_longjmp_resume: | |
84d59861 | 1700 | case bp_step_resume: |
bcc37718 | 1701 | case bp_through_sigtramp: |
999dd04b | 1702 | case bp_watchpoint_scope: |
bb7b3800 | 1703 | case bp_call_dummy: |
bd5635a1 | 1704 | if (addressprint) |
47ebe8fd | 1705 | { |
f2d9c058 | 1706 | annotate_field (4); |
47ebe8fd JK |
1707 | /* FIXME-32x64: need a print_address_numeric with |
1708 | field width */ | |
1709 | printf_filtered | |
1710 | ("%s ", | |
1711 | local_hex_string_custom | |
1712 | ((unsigned long) b->address, "08l")); | |
1713 | } | |
1714 | ||
f2d9c058 | 1715 | annotate_field (5); |
bd5635a1 RP |
1716 | |
1717 | last_addr = b->address; | |
d889f6b7 | 1718 | if (b->source_file) |
bd5635a1 RP |
1719 | { |
1720 | sym = find_pc_function (b->address); | |
1721 | if (sym) | |
1722 | { | |
199b2450 TL |
1723 | fputs_filtered ("in ", gdb_stdout); |
1724 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
0a62ff36 | 1725 | wrap_here (wrap_indent); |
199b2450 | 1726 | fputs_filtered (" at ", gdb_stdout); |
bd5635a1 | 1727 | } |
199b2450 | 1728 | fputs_filtered (b->source_file, gdb_stdout); |
bd5635a1 RP |
1729 | printf_filtered (":%d", b->line_number); |
1730 | } | |
1731 | else | |
199b2450 | 1732 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); |
fee933f1 | 1733 | break; |
bd5635a1 RP |
1734 | } |
1735 | ||
1736 | printf_filtered ("\n"); | |
1737 | ||
1738 | if (b->frame) | |
833e0d94 | 1739 | { |
f2d9c058 | 1740 | annotate_field (6); |
47ebe8fd | 1741 | |
833e0d94 | 1742 | printf_filtered ("\tstop only in stack frame at "); |
d24c0599 | 1743 | print_address_numeric (b->frame, 1, gdb_stdout); |
833e0d94 | 1744 | printf_filtered ("\n"); |
bcc37718 | 1745 | } |
47ebe8fd | 1746 | |
bd5635a1 RP |
1747 | if (b->cond) |
1748 | { | |
f2d9c058 | 1749 | annotate_field (7); |
47ebe8fd | 1750 | |
bd5635a1 | 1751 | printf_filtered ("\tstop only if "); |
199b2450 | 1752 | print_expression (b->cond, gdb_stdout); |
bd5635a1 RP |
1753 | printf_filtered ("\n"); |
1754 | } | |
47ebe8fd | 1755 | |
9f577285 SS |
1756 | if (show_breakpoint_hit_counts && b->hit_count) |
1757 | { | |
1758 | /* FIXME should make an annotation for this */ | |
1759 | ||
16726dd1 JK |
1760 | printf_filtered ("\tbreakpoint already hit %d time%s\n", |
1761 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
9f577285 SS |
1762 | } |
1763 | ||
bd5635a1 | 1764 | if (b->ignore_count) |
47ebe8fd | 1765 | { |
f2d9c058 | 1766 | annotate_field (8); |
47ebe8fd JK |
1767 | |
1768 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
1769 | } | |
1770 | ||
bd5635a1 | 1771 | if ((l = b->commands)) |
47ebe8fd | 1772 | { |
f2d9c058 | 1773 | annotate_field (9); |
47ebe8fd JK |
1774 | |
1775 | while (l) | |
1776 | { | |
0f8cdd9b | 1777 | print_command_line (l, 4); |
47ebe8fd JK |
1778 | l = l->next; |
1779 | } | |
1780 | } | |
bd5635a1 RP |
1781 | } |
1782 | ||
fee933f1 RP |
1783 | if (!found_a_breakpoint) |
1784 | { | |
1785 | if (bnum == -1) | |
1786 | printf_filtered ("No breakpoints or watchpoints.\n"); | |
1787 | else | |
1788 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); | |
1789 | } | |
30875e1c SG |
1790 | else |
1791 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
1792 | that a comparison of an unsigned with -1 is always false. */ | |
1793 | if (last_addr != (CORE_ADDR)-1) | |
1794 | set_next_address (last_addr); | |
47ebe8fd | 1795 | |
f2d9c058 | 1796 | annotate_breakpoints_table_end (); |
bd5635a1 RP |
1797 | } |
1798 | ||
bdbd5f50 | 1799 | /* ARGSUSED */ |
bd5635a1 RP |
1800 | static void |
1801 | breakpoints_info (bnum_exp, from_tty) | |
1802 | char *bnum_exp; | |
1803 | int from_tty; | |
1804 | { | |
1805 | int bnum = -1; | |
1806 | ||
1807 | if (bnum_exp) | |
1808 | bnum = parse_and_eval_address (bnum_exp); | |
1809 | ||
c8950965 | 1810 | breakpoint_1 (bnum, 0); |
80ba48f5 SG |
1811 | } |
1812 | ||
9b280a7f JG |
1813 | #if MAINTENANCE_CMDS |
1814 | ||
80ba48f5 SG |
1815 | /* ARGSUSED */ |
1816 | static void | |
9b280a7f | 1817 | maintenance_info_breakpoints (bnum_exp, from_tty) |
80ba48f5 SG |
1818 | char *bnum_exp; |
1819 | int from_tty; | |
1820 | { | |
1821 | int bnum = -1; | |
1822 | ||
1823 | if (bnum_exp) | |
1824 | bnum = parse_and_eval_address (bnum_exp); | |
1825 | ||
c8950965 | 1826 | breakpoint_1 (bnum, 1); |
bd5635a1 RP |
1827 | } |
1828 | ||
9b280a7f JG |
1829 | #endif |
1830 | ||
bd5635a1 RP |
1831 | /* Print a message describing any breakpoints set at PC. */ |
1832 | ||
1833 | static void | |
1834 | describe_other_breakpoints (pc) | |
1835 | register CORE_ADDR pc; | |
1836 | { | |
1837 | register int others = 0; | |
1838 | register struct breakpoint *b; | |
1839 | ||
1840 | ALL_BREAKPOINTS (b) | |
1841 | if (b->address == pc) | |
1842 | others++; | |
1843 | if (others > 0) | |
1844 | { | |
833e0d94 | 1845 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); |
bd5635a1 RP |
1846 | ALL_BREAKPOINTS (b) |
1847 | if (b->address == pc) | |
1848 | { | |
1849 | others--; | |
833e0d94 JK |
1850 | printf_filtered |
1851 | ("%d%s%s ", | |
1852 | b->number, | |
1853 | (b->enable == disabled) ? " (disabled)" : "", | |
1854 | (others > 1) ? "," : ((others == 1) ? " and" : "")); | |
bd5635a1 | 1855 | } |
833e0d94 | 1856 | printf_filtered ("also set at pc "); |
d24c0599 | 1857 | print_address_numeric (pc, 1, gdb_stdout); |
833e0d94 | 1858 | printf_filtered (".\n"); |
bd5635a1 RP |
1859 | } |
1860 | } | |
1861 | \f | |
1862 | /* Set the default place to put a breakpoint | |
1863 | for the `break' command with no arguments. */ | |
1864 | ||
1865 | void | |
1866 | set_default_breakpoint (valid, addr, symtab, line) | |
1867 | int valid; | |
1868 | CORE_ADDR addr; | |
1869 | struct symtab *symtab; | |
1870 | int line; | |
1871 | { | |
1872 | default_breakpoint_valid = valid; | |
1873 | default_breakpoint_address = addr; | |
1874 | default_breakpoint_symtab = symtab; | |
1875 | default_breakpoint_line = line; | |
1876 | } | |
1877 | ||
1878 | /* Rescan breakpoints at address ADDRESS, | |
1879 | marking the first one as "first" and any others as "duplicates". | |
1880 | This is so that the bpt instruction is only inserted once. */ | |
1881 | ||
1882 | static void | |
1883 | check_duplicates (address) | |
1884 | CORE_ADDR address; | |
1885 | { | |
1886 | register struct breakpoint *b; | |
1887 | register int count = 0; | |
1888 | ||
30875e1c | 1889 | if (address == 0) /* Watchpoints are uninteresting */ |
f266e564 JK |
1890 | return; |
1891 | ||
bd5635a1 RP |
1892 | ALL_BREAKPOINTS (b) |
1893 | if (b->enable != disabled && b->address == address) | |
1894 | { | |
1895 | count++; | |
1896 | b->duplicate = count > 1; | |
1897 | } | |
1898 | } | |
1899 | ||
1900 | /* Low level routine to set a breakpoint. | |
1901 | Takes as args the three things that every breakpoint must have. | |
1902 | Returns the breakpoint object so caller can set other things. | |
1903 | Does not set the breakpoint number! | |
f266e564 JK |
1904 | Does not print anything. |
1905 | ||
1906 | ==> This routine should not be called if there is a chance of later | |
1907 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
1908 | your arguments BEFORE calling this routine! */ | |
bd5635a1 RP |
1909 | |
1910 | static struct breakpoint * | |
1911 | set_raw_breakpoint (sal) | |
1912 | struct symtab_and_line sal; | |
1913 | { | |
1914 | register struct breakpoint *b, *b1; | |
1915 | ||
1916 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4ed3a9ea | 1917 | memset (b, 0, sizeof (*b)); |
bd5635a1 | 1918 | b->address = sal.pc; |
d889f6b7 JK |
1919 | if (sal.symtab == NULL) |
1920 | b->source_file = NULL; | |
1921 | else | |
1922 | b->source_file = savestring (sal.symtab->filename, | |
1923 | strlen (sal.symtab->filename)); | |
706dc3ce JL |
1924 | b->language = current_language->la_language; |
1925 | b->input_radix = input_radix; | |
199b2450 | 1926 | b->thread = -1; |
bd5635a1 RP |
1927 | b->line_number = sal.line; |
1928 | b->enable = enabled; | |
1929 | b->next = 0; | |
1930 | b->silent = 0; | |
1931 | b->ignore_count = 0; | |
1932 | b->commands = NULL; | |
30875e1c | 1933 | b->frame = 0; |
bd5635a1 RP |
1934 | |
1935 | /* Add this breakpoint to the end of the chain | |
1936 | so that a list of breakpoints will come out in order | |
1937 | of increasing numbers. */ | |
1938 | ||
1939 | b1 = breakpoint_chain; | |
1940 | if (b1 == 0) | |
1941 | breakpoint_chain = b; | |
1942 | else | |
1943 | { | |
1944 | while (b1->next) | |
1945 | b1 = b1->next; | |
1946 | b1->next = b; | |
1947 | } | |
1948 | ||
1949 | check_duplicates (sal.pc); | |
6c803036 | 1950 | breakpoints_changed (); |
bd5635a1 RP |
1951 | |
1952 | return b; | |
1953 | } | |
1954 | ||
30875e1c | 1955 | static void |
80ba48f5 | 1956 | create_longjmp_breakpoint(func_name) |
30875e1c | 1957 | char *func_name; |
30875e1c | 1958 | { |
30875e1c SG |
1959 | struct symtab_and_line sal; |
1960 | struct breakpoint *b; | |
80ba48f5 | 1961 | static int internal_breakpoint_number = -1; |
30875e1c | 1962 | |
30875e1c SG |
1963 | if (func_name != NULL) |
1964 | { | |
1965 | struct minimal_symbol *m; | |
1966 | ||
e8bf33c4 | 1967 | m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *)NULL); |
30875e1c | 1968 | if (m) |
2d313932 | 1969 | sal.pc = SYMBOL_VALUE_ADDRESS (m); |
30875e1c SG |
1970 | else |
1971 | return; | |
1972 | } | |
1973 | else | |
1974 | sal.pc = 0; | |
1975 | ||
1976 | sal.symtab = NULL; | |
1977 | sal.line = 0; | |
30875e1c | 1978 | |
80ba48f5 | 1979 | b = set_raw_breakpoint(sal); |
30875e1c SG |
1980 | if (!b) return; |
1981 | ||
80ba48f5 | 1982 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; |
30875e1c SG |
1983 | b->disposition = donttouch; |
1984 | b->enable = disabled; | |
1985 | b->silent = 1; | |
80ba48f5 SG |
1986 | if (func_name) |
1987 | b->addr_string = strsave(func_name); | |
1988 | b->number = internal_breakpoint_number--; | |
30875e1c | 1989 | } |
30875e1c SG |
1990 | |
1991 | /* Call this routine when stepping and nexting to enable a breakpoint if we do | |
1992 | a longjmp(). When we hit that breakpoint, call | |
1993 | set_longjmp_resume_breakpoint() to figure out where we are going. */ | |
1994 | ||
1995 | void | |
1996 | enable_longjmp_breakpoint() | |
1997 | { | |
80ba48f5 SG |
1998 | register struct breakpoint *b; |
1999 | ||
2000 | ALL_BREAKPOINTS (b) | |
2001 | if (b->type == bp_longjmp) | |
9b280a7f JG |
2002 | { |
2003 | b->enable = enabled; | |
2004 | check_duplicates (b->address); | |
2005 | } | |
30875e1c SG |
2006 | } |
2007 | ||
2008 | void | |
2009 | disable_longjmp_breakpoint() | |
2010 | { | |
80ba48f5 SG |
2011 | register struct breakpoint *b; |
2012 | ||
2013 | ALL_BREAKPOINTS (b) | |
9b280a7f | 2014 | if ( b->type == bp_longjmp |
80ba48f5 | 2015 | || b->type == bp_longjmp_resume) |
9b280a7f JG |
2016 | { |
2017 | b->enable = disabled; | |
2018 | check_duplicates (b->address); | |
2019 | } | |
30875e1c SG |
2020 | } |
2021 | ||
11054881 KH |
2022 | int |
2023 | hw_breakpoint_used_count() | |
2024 | { | |
2025 | register struct breakpoint *b; | |
2026 | int i = 0; | |
2027 | ||
2028 | ALL_BREAKPOINTS (b) | |
2029 | { | |
2030 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
2031 | i++; | |
2032 | } | |
2033 | ||
2034 | return i; | |
2035 | } | |
2036 | ||
2037 | int | |
2038 | hw_watchpoint_used_count(type, other_type_used) | |
2039 | enum bptype type; | |
2040 | int *other_type_used; | |
2041 | { | |
2042 | register struct breakpoint *b; | |
2043 | int i = 0; | |
2044 | ||
2045 | *other_type_used = 0; | |
2046 | ALL_BREAKPOINTS (b) | |
2047 | { | |
2048 | if (b->enable == enabled) | |
2049 | { | |
2050 | if (b->type == type) i++; | |
2051 | else if ((b->type == bp_hardware_watchpoint || | |
2052 | b->type == bp_read_watchpoint || | |
2053 | b->type == bp_access_watchpoint) | |
2054 | && b->enable == enabled) | |
2055 | *other_type_used = 1; | |
2056 | } | |
2057 | } | |
2058 | return i; | |
2059 | } | |
2060 | ||
30875e1c SG |
2061 | /* Call this after hitting the longjmp() breakpoint. Use this to set a new |
2062 | breakpoint at the target of the jmp_buf. | |
80ba48f5 SG |
2063 | |
2064 | FIXME - This ought to be done by setting a temporary breakpoint that gets | |
2065 | deleted automatically... | |
30875e1c SG |
2066 | */ |
2067 | ||
2068 | void | |
2069 | set_longjmp_resume_breakpoint(pc, frame) | |
2070 | CORE_ADDR pc; | |
706dc3ce | 2071 | struct frame_info *frame; |
30875e1c | 2072 | { |
80ba48f5 SG |
2073 | register struct breakpoint *b; |
2074 | ||
2075 | ALL_BREAKPOINTS (b) | |
2076 | if (b->type == bp_longjmp_resume) | |
2077 | { | |
2078 | b->address = pc; | |
2079 | b->enable = enabled; | |
2080 | if (frame != NULL) | |
706dc3ce | 2081 | b->frame = frame->frame; |
80ba48f5 SG |
2082 | else |
2083 | b->frame = 0; | |
9b280a7f | 2084 | check_duplicates (b->address); |
80ba48f5 SG |
2085 | return; |
2086 | } | |
30875e1c SG |
2087 | } |
2088 | ||
bd5635a1 RP |
2089 | /* Set a breakpoint that will evaporate an end of command |
2090 | at address specified by SAL. | |
2091 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
2092 | ||
30875e1c SG |
2093 | struct breakpoint * |
2094 | set_momentary_breakpoint (sal, frame, type) | |
bd5635a1 | 2095 | struct symtab_and_line sal; |
706dc3ce | 2096 | struct frame_info *frame; |
30875e1c | 2097 | enum bptype type; |
bd5635a1 RP |
2098 | { |
2099 | register struct breakpoint *b; | |
2100 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
2101 | b->type = type; |
2102 | b->enable = enabled; | |
2103 | b->disposition = donttouch; | |
706dc3ce | 2104 | b->frame = (frame ? frame->frame : 0); |
2b576293 C |
2105 | |
2106 | /* If we're debugging a multi-threaded program, then we | |
2107 | want momentary breakpoints to be active in only a | |
2108 | single thread of control. */ | |
2109 | if (in_thread_list (inferior_pid)) | |
2110 | b->thread = pid_to_thread_id (inferior_pid); | |
2111 | ||
30875e1c | 2112 | return b; |
bd5635a1 RP |
2113 | } |
2114 | ||
30875e1c | 2115 | #if 0 |
bd5635a1 RP |
2116 | void |
2117 | clear_momentary_breakpoints () | |
2118 | { | |
2119 | register struct breakpoint *b; | |
2120 | ALL_BREAKPOINTS (b) | |
30875e1c | 2121 | if (b->disposition == delete) |
bd5635a1 RP |
2122 | { |
2123 | delete_breakpoint (b); | |
2124 | break; | |
2125 | } | |
2126 | } | |
30875e1c | 2127 | #endif |
bd5635a1 RP |
2128 | \f |
2129 | /* Tell the user we have just set a breakpoint B. */ | |
9f577285 | 2130 | |
bd5635a1 RP |
2131 | static void |
2132 | mention (b) | |
2133 | struct breakpoint *b; | |
2134 | { | |
9f577285 SS |
2135 | int say_where = 0; |
2136 | ||
d2a85f11 JMD |
2137 | /* FIXME: This is misplaced; mention() is called by things (like hitting a |
2138 | watchpoint) other than breakpoint creation. It should be possible to | |
2139 | clean this up and at the same time replace the random calls to | |
2140 | breakpoint_changed with this hook, as has already been done for | |
2141 | delete_breakpoint_hook and so on. */ | |
754e5da2 SG |
2142 | if (create_breakpoint_hook) |
2143 | create_breakpoint_hook (b); | |
2144 | ||
30875e1c | 2145 | switch (b->type) |
bd5635a1 | 2146 | { |
30875e1c | 2147 | case bp_watchpoint: |
bd5635a1 | 2148 | printf_filtered ("Watchpoint %d: ", b->number); |
199b2450 | 2149 | print_expression (b->exp, gdb_stdout); |
30875e1c | 2150 | break; |
999dd04b JL |
2151 | case bp_hardware_watchpoint: |
2152 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
2153 | print_expression (b->exp, gdb_stdout); | |
2154 | break; | |
11054881 KH |
2155 | case bp_read_watchpoint: |
2156 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
2157 | print_expression (b->exp, gdb_stdout); | |
2158 | break; | |
2159 | case bp_access_watchpoint: | |
2160 | printf_filtered ("Hardware access(read/write) watchpoint %d: ",b->number); | |
2161 | print_expression (b->exp, gdb_stdout); | |
2162 | break; | |
30875e1c | 2163 | case bp_breakpoint: |
9f577285 SS |
2164 | printf_filtered ("Breakpoint %d", b->number); |
2165 | say_where = 1; | |
51b57ded | 2166 | break; |
11054881 | 2167 | case bp_hardware_breakpoint: |
9f577285 SS |
2168 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
2169 | say_where = 1; | |
11054881 | 2170 | break; |
51b57ded FF |
2171 | case bp_until: |
2172 | case bp_finish: | |
2173 | case bp_longjmp: | |
2174 | case bp_longjmp_resume: | |
fee933f1 | 2175 | case bp_step_resume: |
bcc37718 | 2176 | case bp_through_sigtramp: |
199b2450 | 2177 | case bp_call_dummy: |
999dd04b | 2178 | case bp_watchpoint_scope: |
51b57ded | 2179 | break; |
bd5635a1 | 2180 | } |
9f577285 SS |
2181 | if (say_where) |
2182 | { | |
2183 | if (addressprint || b->source_file == NULL) | |
2184 | { | |
2185 | printf_filtered (" at "); | |
2186 | print_address_numeric (b->address, 1, gdb_stdout); | |
2187 | } | |
2188 | if (b->source_file) | |
2189 | printf_filtered (": file %s, line %d.", | |
2190 | b->source_file, b->line_number); | |
2191 | } | |
bd5635a1 RP |
2192 | printf_filtered ("\n"); |
2193 | } | |
2194 | ||
2195 | #if 0 | |
2196 | /* Nobody calls this currently. */ | |
2197 | /* Set a breakpoint from a symtab and line. | |
2198 | If TEMPFLAG is nonzero, it is a temporary breakpoint. | |
2199 | ADDR_STRING is a malloc'd string holding the name of where we are | |
2200 | setting the breakpoint. This is used later to re-set it after the | |
2201 | program is relinked and symbols are reloaded. | |
2202 | Print the same confirmation messages that the breakpoint command prints. */ | |
2203 | ||
2204 | void | |
2205 | set_breakpoint (s, line, tempflag, addr_string) | |
2206 | struct symtab *s; | |
2207 | int line; | |
2208 | int tempflag; | |
2209 | char *addr_string; | |
2210 | { | |
2211 | register struct breakpoint *b; | |
2212 | struct symtab_and_line sal; | |
2213 | ||
2214 | sal.symtab = s; | |
2215 | sal.line = line; | |
30875e1c SG |
2216 | sal.pc = 0; |
2217 | resolve_sal_pc (&sal); /* Might error out */ | |
2218 | describe_other_breakpoints (sal.pc); | |
bd5635a1 | 2219 | |
30875e1c SG |
2220 | b = set_raw_breakpoint (sal); |
2221 | set_breakpoint_count (breakpoint_count + 1); | |
2222 | b->number = breakpoint_count; | |
2223 | b->type = bp_breakpoint; | |
2224 | b->cond = 0; | |
2225 | b->addr_string = addr_string; | |
2226 | b->enable = enabled; | |
2227 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 | 2228 | |
30875e1c | 2229 | mention (b); |
bd5635a1 | 2230 | } |
30875e1c | 2231 | #endif /* 0 */ |
bd5635a1 RP |
2232 | \f |
2233 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
11054881 KH |
2234 | flag: first bit : 0 non-temporary, 1 temporary. |
2235 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
bd5635a1 RP |
2236 | |
2237 | static void | |
11054881 | 2238 | break_command_1 (arg, flag, from_tty) |
bd5635a1 | 2239 | char *arg; |
11054881 | 2240 | int flag, from_tty; |
bd5635a1 | 2241 | { |
11054881 | 2242 | int tempflag, hardwareflag; |
bd5635a1 RP |
2243 | struct symtabs_and_lines sals; |
2244 | struct symtab_and_line sal; | |
2245 | register struct expression *cond = 0; | |
2246 | register struct breakpoint *b; | |
2247 | ||
2248 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
2249 | char *cond_start = NULL; | |
fee933f1 | 2250 | char *cond_end = NULL; |
bd5635a1 RP |
2251 | /* Pointers in arg to the start, and one past the end, |
2252 | of the address part. */ | |
2253 | char *addr_start = NULL; | |
fee933f1 | 2254 | char *addr_end = NULL; |
d889f6b7 | 2255 | struct cleanup *old_chain; |
fee933f1 | 2256 | struct cleanup *canonical_strings_chain = NULL; |
d889f6b7 | 2257 | char **canonical = (char **)NULL; |
bd5635a1 | 2258 | int i; |
199b2450 | 2259 | int thread; |
bd5635a1 | 2260 | |
e8bf33c4 JK |
2261 | hardwareflag = flag & BP_HARDWAREFLAG; |
2262 | tempflag = flag & BP_TEMPFLAG; | |
11054881 | 2263 | |
bd5635a1 RP |
2264 | sals.sals = NULL; |
2265 | sals.nelts = 0; | |
2266 | ||
2267 | sal.line = sal.pc = sal.end = 0; | |
2268 | sal.symtab = 0; | |
2269 | ||
2270 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
2271 | ||
2272 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2273 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2274 | { | |
2275 | if (default_breakpoint_valid) | |
2276 | { | |
2277 | sals.sals = (struct symtab_and_line *) | |
2278 | xmalloc (sizeof (struct symtab_and_line)); | |
2279 | sal.pc = default_breakpoint_address; | |
2280 | sal.line = default_breakpoint_line; | |
2281 | sal.symtab = default_breakpoint_symtab; | |
2282 | sals.sals[0] = sal; | |
2283 | sals.nelts = 1; | |
2284 | } | |
2285 | else | |
2286 | error ("No default breakpoint address now."); | |
2287 | } | |
2288 | else | |
2289 | { | |
2290 | addr_start = arg; | |
2291 | ||
2292 | /* Force almost all breakpoints to be in terms of the | |
2293 | current_source_symtab (which is decode_line_1's default). This | |
2294 | should produce the results we want almost all of the time while | |
2295 | leaving default_breakpoint_* alone. */ | |
2296 | if (default_breakpoint_valid | |
2297 | && (!current_source_symtab | |
2298 | || (arg && (*arg == '+' || *arg == '-')))) | |
2299 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2300 | default_breakpoint_line, &canonical); |
bd5635a1 | 2301 | else |
d889f6b7 | 2302 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical); |
bd5635a1 RP |
2303 | |
2304 | addr_end = arg; | |
2305 | } | |
2306 | ||
2307 | if (! sals.nelts) | |
2308 | return; | |
2309 | ||
d889f6b7 JK |
2310 | /* Make sure that all storage allocated in decode_line_1 gets freed in case |
2311 | the following `for' loop errors out. */ | |
2312 | old_chain = make_cleanup (free, sals.sals); | |
2313 | if (canonical != (char **)NULL) | |
2314 | { | |
2315 | make_cleanup (free, canonical); | |
2316 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
2317 | for (i = 0; i < sals.nelts; i++) | |
2318 | { | |
2319 | if (canonical[i] != NULL) | |
2320 | make_cleanup (free, canonical[i]); | |
2321 | } | |
2322 | } | |
2323 | ||
199b2450 TL |
2324 | thread = -1; /* No specific thread yet */ |
2325 | ||
30875e1c SG |
2326 | /* Resolve all line numbers to PC's, and verify that conditions |
2327 | can be parsed, before setting any breakpoints. */ | |
bd5635a1 RP |
2328 | for (i = 0; i < sals.nelts; i++) |
2329 | { | |
199b2450 TL |
2330 | char *tok, *end_tok; |
2331 | int toklen; | |
2332 | ||
30875e1c | 2333 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 | 2334 | |
199b2450 TL |
2335 | tok = arg; |
2336 | ||
2337 | while (tok && *tok) | |
bd5635a1 | 2338 | { |
199b2450 TL |
2339 | while (*tok == ' ' || *tok == '\t') |
2340 | tok++; | |
2341 | ||
2342 | end_tok = tok; | |
2343 | ||
2344 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2345 | end_tok++; | |
2346 | ||
2347 | toklen = end_tok - tok; | |
2348 | ||
2349 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2350 | { | |
2351 | tok = cond_start = end_tok + 1; | |
2352 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
2353 | cond_end = tok; | |
2354 | } | |
2355 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
bd5635a1 | 2356 | { |
199b2450 TL |
2357 | char *tmptok; |
2358 | ||
2359 | tok = end_tok + 1; | |
2360 | tmptok = tok; | |
2361 | thread = strtol (tok, &tok, 0); | |
2362 | if (tok == tmptok) | |
2363 | error ("Junk after thread keyword."); | |
2364 | if (!valid_thread_id (thread)) | |
2365 | error ("Unknown thread %d\n", thread); | |
bd5635a1 RP |
2366 | } |
2367 | else | |
2368 | error ("Junk at end of arguments."); | |
2369 | } | |
bd5635a1 | 2370 | } |
11054881 KH |
2371 | if (hardwareflag) |
2372 | { | |
557f3a0e SS |
2373 | int i, target_resources_ok; |
2374 | ||
2375 | i = hw_breakpoint_used_count (); | |
2376 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
2377 | bp_hardware_breakpoint, i + sals.nelts, 0); | |
11054881 KH |
2378 | if (target_resources_ok == 0) |
2379 | error ("No hardware breakpoint support in the target."); | |
2380 | else if (target_resources_ok < 0) | |
2381 | error ("Hardware breakpoints used exceeds limit."); | |
2382 | } | |
bd5635a1 | 2383 | |
d889f6b7 JK |
2384 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
2385 | if (canonical != (char **)NULL) | |
2386 | discard_cleanups (canonical_strings_chain); | |
2387 | ||
30875e1c | 2388 | /* Now set all the breakpoints. */ |
bd5635a1 RP |
2389 | for (i = 0; i < sals.nelts; i++) |
2390 | { | |
2391 | sal = sals.sals[i]; | |
2392 | ||
2393 | if (from_tty) | |
2394 | describe_other_breakpoints (sal.pc); | |
2395 | ||
2396 | b = set_raw_breakpoint (sal); | |
2397 | set_breakpoint_count (breakpoint_count + 1); | |
2398 | b->number = breakpoint_count; | |
11054881 | 2399 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; |
bd5635a1 | 2400 | b->cond = cond; |
199b2450 | 2401 | b->thread = thread; |
0a97f6c4 | 2402 | |
d889f6b7 JK |
2403 | /* If a canonical line spec is needed use that instead of the |
2404 | command string. */ | |
2405 | if (canonical != (char **)NULL && canonical[i] != NULL) | |
2406 | b->addr_string = canonical[i]; | |
2407 | else if (addr_start) | |
bd5635a1 RP |
2408 | b->addr_string = savestring (addr_start, addr_end - addr_start); |
2409 | if (cond_start) | |
2410 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2411 | ||
30875e1c | 2412 | b->enable = enabled; |
e8bf33c4 | 2413 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 RP |
2414 | |
2415 | mention (b); | |
2416 | } | |
2417 | ||
2418 | if (sals.nelts > 1) | |
2419 | { | |
833e0d94 JK |
2420 | printf_filtered ("Multiple breakpoints were set.\n"); |
2421 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 2422 | } |
d889f6b7 | 2423 | do_cleanups (old_chain); |
bd5635a1 RP |
2424 | } |
2425 | ||
30875e1c SG |
2426 | /* Helper function for break_command_1 and disassemble_command. */ |
2427 | ||
2428 | void | |
2429 | resolve_sal_pc (sal) | |
2430 | struct symtab_and_line *sal; | |
2431 | { | |
2432 | CORE_ADDR pc; | |
2433 | ||
2434 | if (sal->pc == 0 && sal->symtab != 0) | |
2435 | { | |
2436 | pc = find_line_pc (sal->symtab, sal->line); | |
2437 | if (pc == 0) | |
2438 | error ("No line %d in file \"%s\".", | |
2439 | sal->line, sal->symtab->filename); | |
2440 | sal->pc = pc; | |
2441 | } | |
2442 | } | |
2443 | ||
bd5635a1 RP |
2444 | void |
2445 | break_command (arg, from_tty) | |
2446 | char *arg; | |
2447 | int from_tty; | |
2448 | { | |
2449 | break_command_1 (arg, 0, from_tty); | |
2450 | } | |
2451 | ||
2452 | static void | |
2453 | tbreak_command (arg, from_tty) | |
2454 | char *arg; | |
2455 | int from_tty; | |
2456 | { | |
11054881 KH |
2457 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
2458 | } | |
2459 | ||
2460 | static void | |
2461 | hbreak_command (arg, from_tty) | |
2462 | char *arg; | |
2463 | int from_tty; | |
2464 | { | |
2465 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
2466 | } | |
2467 | ||
2468 | static void | |
2469 | thbreak_command (arg, from_tty) | |
2470 | char *arg; | |
2471 | int from_tty; | |
2472 | { | |
2473 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
bd5635a1 RP |
2474 | } |
2475 | ||
bdbd5f50 | 2476 | /* ARGSUSED */ |
11054881 KH |
2477 | /* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) |
2478 | */ | |
bd5635a1 | 2479 | static void |
11054881 | 2480 | watch_command_1 (arg, accessflag, from_tty) |
bd5635a1 | 2481 | char *arg; |
11054881 | 2482 | int accessflag; |
bd5635a1 RP |
2483 | int from_tty; |
2484 | { | |
2485 | struct breakpoint *b; | |
2486 | struct symtab_and_line sal; | |
f266e564 JK |
2487 | struct expression *exp; |
2488 | struct block *exp_valid_block; | |
11054881 | 2489 | struct value *val, *mark; |
706dc3ce | 2490 | struct frame_info *frame, *prev_frame; |
11054881 KH |
2491 | char *exp_start = NULL; |
2492 | char *exp_end = NULL; | |
2493 | char *tok, *end_tok; | |
2494 | int toklen; | |
2495 | char *cond_start = NULL; | |
2496 | char *cond_end = NULL; | |
2497 | struct expression *cond = NULL; | |
2498 | int i, other_type_used, target_resources_ok; | |
2499 | enum bptype bp_type; | |
2500 | int mem_cnt = 0; | |
bd5635a1 | 2501 | |
30875e1c | 2502 | sal.pc = 0; |
bd5635a1 RP |
2503 | sal.symtab = NULL; |
2504 | sal.line = 0; | |
2505 | ||
f266e564 JK |
2506 | /* Parse arguments. */ |
2507 | innermost_block = NULL; | |
11054881 KH |
2508 | exp_start = arg; |
2509 | exp = parse_exp_1 (&arg, 0, 0); | |
2510 | exp_end = arg; | |
f266e564 | 2511 | exp_valid_block = innermost_block; |
11054881 | 2512 | mark = value_mark (); |
f266e564 JK |
2513 | val = evaluate_expression (exp); |
2514 | release_value (val); | |
2d313932 JK |
2515 | if (VALUE_LAZY (val)) |
2516 | value_fetch_lazy (val); | |
f266e564 | 2517 | |
11054881 KH |
2518 | tok = arg; |
2519 | while (*tok == ' ' || *tok == '\t') | |
2520 | tok++; | |
2521 | end_tok = tok; | |
2522 | ||
2523 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2524 | end_tok++; | |
2525 | ||
2526 | toklen = end_tok - tok; | |
2527 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2528 | { | |
2529 | tok = cond_start = end_tok + 1; | |
2530 | cond = parse_exp_1 (&tok, 0, 0); | |
2531 | cond_end = tok; | |
2532 | } | |
2533 | if (*tok) | |
2534 | error("Junk at end of command."); | |
2535 | ||
2536 | if (accessflag == 1) bp_type = bp_read_watchpoint; | |
2537 | else if (accessflag == 2) bp_type = bp_access_watchpoint; | |
2538 | else bp_type = bp_hardware_watchpoint; | |
2539 | ||
2540 | mem_cnt = can_use_hardware_watchpoint (val); | |
2541 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
2542 | error ("Expression cannot be implemented with read/access watchpoint."); | |
2543 | if (mem_cnt != 0) { | |
2544 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
2545 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
2546 | bp_type, i + mem_cnt, other_type_used); | |
2547 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) | |
2548 | error ("Target does not have this type of hardware watchpoint support."); | |
2549 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) | |
2550 | error ("Target resources have been allocated for other types of watchpoints."); | |
2551 | } | |
2552 | ||
f266e564 | 2553 | /* Now set up the breakpoint. */ |
bd5635a1 RP |
2554 | b = set_raw_breakpoint (sal); |
2555 | set_breakpoint_count (breakpoint_count + 1); | |
2556 | b->number = breakpoint_count; | |
30875e1c | 2557 | b->disposition = donttouch; |
f266e564 JK |
2558 | b->exp = exp; |
2559 | b->exp_valid_block = exp_valid_block; | |
11054881 | 2560 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
f266e564 | 2561 | b->val = val; |
11054881 KH |
2562 | b->cond = cond; |
2563 | if (cond_start) | |
2564 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2565 | else | |
2566 | b->cond_string = 0; | |
2567 | ||
999dd04b JL |
2568 | frame = block_innermost_frame (exp_valid_block); |
2569 | if (frame) | |
2570 | { | |
2571 | prev_frame = get_prev_frame (frame); | |
706dc3ce | 2572 | b->watchpoint_frame = frame->frame; |
999dd04b JL |
2573 | } |
2574 | else | |
9e8db445 | 2575 | b->watchpoint_frame = (CORE_ADDR)0; |
999dd04b | 2576 | |
11054881 KH |
2577 | if (mem_cnt && target_resources_ok > 0) |
2578 | b->type = bp_type; | |
999dd04b JL |
2579 | else |
2580 | b->type = bp_watchpoint; | |
2581 | ||
2582 | /* If the expression is "local", then set up a "watchpoint scope" | |
2583 | breakpoint at the point where we've left the scope of the watchpoint | |
2584 | expression. */ | |
2585 | if (innermost_block) | |
2586 | { | |
2587 | struct breakpoint *scope_breakpoint; | |
2588 | struct symtab_and_line scope_sal; | |
2589 | ||
2590 | if (prev_frame) | |
2591 | { | |
2592 | scope_sal.pc = get_frame_pc (prev_frame); | |
2593 | scope_sal.symtab = NULL; | |
2594 | scope_sal.line = 0; | |
2595 | ||
2596 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
2597 | set_breakpoint_count (breakpoint_count + 1); | |
2598 | scope_breakpoint->number = breakpoint_count; | |
2599 | ||
2600 | scope_breakpoint->type = bp_watchpoint_scope; | |
2601 | scope_breakpoint->enable = enabled; | |
2602 | ||
2603 | /* Automatically delete the breakpoint when it hits. */ | |
e8bf33c4 | 2604 | scope_breakpoint->disposition = del; |
999dd04b JL |
2605 | |
2606 | /* Only break in the proper frame (help with recursion). */ | |
2607 | scope_breakpoint->frame = prev_frame->frame; | |
2608 | ||
2609 | /* Set the address at which we will stop. */ | |
2610 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
2611 | ||
2612 | /* The scope breakpoint is related to the watchpoint. We | |
2613 | will need to act on them together. */ | |
2614 | b->related_breakpoint = scope_breakpoint; | |
2615 | } | |
2616 | } | |
11054881 | 2617 | value_free_to_mark (mark); |
bd5635a1 RP |
2618 | mention (b); |
2619 | } | |
999dd04b | 2620 | |
11054881 KH |
2621 | /* Return count of locations need to be watched and can be handled |
2622 | in hardware. If the watchpoint can not be handled | |
999dd04b JL |
2623 | in hardware return zero. */ |
2624 | ||
2625 | static int | |
11054881 KH |
2626 | can_use_hardware_watchpoint (v) |
2627 | struct value *v; | |
999dd04b | 2628 | { |
11054881 | 2629 | int found_memory_cnt = 0; |
999dd04b JL |
2630 | |
2631 | /* Make sure all the intermediate values are in memory. Also make sure | |
2632 | we found at least one memory expression. Guards against watch 0x12345, | |
2633 | which is meaningless, but could cause errors if one tries to insert a | |
2634 | hardware watchpoint for the constant expression. */ | |
11054881 | 2635 | for ( ; v; v = v->next) |
999dd04b | 2636 | { |
11054881 KH |
2637 | if (v->lval == lval_memory) |
2638 | { | |
2639 | if (TYPE_LENGTH (VALUE_TYPE (v)) <= REGISTER_SIZE) | |
2640 | found_memory_cnt++; | |
2641 | } | |
2642 | else if (v->lval != not_lval && v->modifiable == 0) | |
999dd04b | 2643 | return 0; |
999dd04b JL |
2644 | } |
2645 | ||
2646 | /* The expression itself looks suitable for using a hardware | |
2647 | watchpoint, but give the target machine a chance to reject it. */ | |
11054881 KH |
2648 | return found_memory_cnt; |
2649 | } | |
2650 | ||
2651 | static void watch_command (arg, from_tty) | |
2652 | char *arg; | |
2653 | int from_tty; | |
2654 | { | |
2655 | watch_command_1 (arg, 0, from_tty); | |
2656 | } | |
2657 | ||
2658 | static void rwatch_command (arg, from_tty) | |
2659 | char *arg; | |
2660 | int from_tty; | |
2661 | { | |
2662 | watch_command_1 (arg, 1, from_tty); | |
2663 | } | |
2664 | ||
2665 | static void awatch_command (arg, from_tty) | |
2666 | char *arg; | |
2667 | int from_tty; | |
2668 | { | |
2669 | watch_command_1 (arg, 2, from_tty); | |
999dd04b JL |
2670 | } |
2671 | ||
bd5635a1 | 2672 | \f |
706dc3ce JL |
2673 | /* Helper routine for the until_command routine in infcmd.c. Here |
2674 | because it uses the mechanisms of breakpoints. */ | |
2675 | ||
bdbd5f50 | 2676 | /* ARGSUSED */ |
bd5635a1 RP |
2677 | void |
2678 | until_break_command (arg, from_tty) | |
2679 | char *arg; | |
2680 | int from_tty; | |
2681 | { | |
2682 | struct symtabs_and_lines sals; | |
2683 | struct symtab_and_line sal; | |
706dc3ce | 2684 | struct frame_info *prev_frame = get_prev_frame (selected_frame); |
30875e1c SG |
2685 | struct breakpoint *breakpoint; |
2686 | struct cleanup *old_chain; | |
bd5635a1 RP |
2687 | |
2688 | clear_proceed_status (); | |
2689 | ||
2690 | /* Set a breakpoint where the user wants it and at return from | |
2691 | this function */ | |
2692 | ||
2693 | if (default_breakpoint_valid) | |
2694 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2695 | default_breakpoint_line, (char ***)NULL); |
bd5635a1 | 2696 | else |
d889f6b7 | 2697 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
2698 | |
2699 | if (sals.nelts != 1) | |
2700 | error ("Couldn't get information on specified line."); | |
2701 | ||
2702 | sal = sals.sals[0]; | |
c8950965 | 2703 | free ((PTR)sals.sals); /* malloc'd, so freed */ |
bd5635a1 RP |
2704 | |
2705 | if (*arg) | |
2706 | error ("Junk at end of arguments."); | |
2707 | ||
30875e1c | 2708 | resolve_sal_pc (&sal); |
bd5635a1 | 2709 | |
30875e1c | 2710 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
bd5635a1 | 2711 | |
30875e1c SG |
2712 | old_chain = make_cleanup(delete_breakpoint, breakpoint); |
2713 | ||
bd5635a1 RP |
2714 | /* Keep within the current frame */ |
2715 | ||
2716 | if (prev_frame) | |
2717 | { | |
706dc3ce JL |
2718 | sal = find_pc_line (prev_frame->pc, 0); |
2719 | sal.pc = prev_frame->pc; | |
30875e1c SG |
2720 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); |
2721 | make_cleanup(delete_breakpoint, breakpoint); | |
bd5635a1 RP |
2722 | } |
2723 | ||
d7e7e851 | 2724 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
30875e1c | 2725 | do_cleanups(old_chain); |
bd5635a1 RP |
2726 | } |
2727 | \f | |
bdbd5f50 JG |
2728 | #if 0 |
2729 | /* These aren't used; I don't konw what they were for. */ | |
bd5635a1 RP |
2730 | /* Set a breakpoint at the catch clause for NAME. */ |
2731 | static int | |
2732 | catch_breakpoint (name) | |
2733 | char *name; | |
2734 | { | |
2735 | } | |
2736 | ||
2737 | static int | |
2738 | disable_catch_breakpoint () | |
2739 | { | |
2740 | } | |
2741 | ||
2742 | static int | |
2743 | delete_catch_breakpoint () | |
2744 | { | |
2745 | } | |
2746 | ||
2747 | static int | |
2748 | enable_catch_breakpoint () | |
2749 | { | |
2750 | } | |
bdbd5f50 | 2751 | #endif /* 0 */ |
bd5635a1 RP |
2752 | |
2753 | struct sal_chain | |
2754 | { | |
2755 | struct sal_chain *next; | |
2756 | struct symtab_and_line sal; | |
2757 | }; | |
2758 | ||
bdbd5f50 JG |
2759 | #if 0 |
2760 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 RP |
2761 | /* For each catch clause identified in ARGS, run FUNCTION |
2762 | with that clause as an argument. */ | |
2763 | static struct symtabs_and_lines | |
2764 | map_catch_names (args, function) | |
2765 | char *args; | |
2766 | int (*function)(); | |
2767 | { | |
2768 | register char *p = args; | |
2769 | register char *p1; | |
2770 | struct symtabs_and_lines sals; | |
bdbd5f50 | 2771 | #if 0 |
bd5635a1 | 2772 | struct sal_chain *sal_chain = 0; |
bdbd5f50 | 2773 | #endif |
bd5635a1 RP |
2774 | |
2775 | if (p == 0) | |
2776 | error_no_arg ("one or more catch names"); | |
2777 | ||
2778 | sals.nelts = 0; | |
2779 | sals.sals = NULL; | |
2780 | ||
2781 | while (*p) | |
2782 | { | |
2783 | p1 = p; | |
2784 | /* Don't swallow conditional part. */ | |
2785 | if (p1[0] == 'i' && p1[1] == 'f' | |
2786 | && (p1[2] == ' ' || p1[2] == '\t')) | |
2787 | break; | |
2788 | ||
2789 | if (isalpha (*p1)) | |
2790 | { | |
2791 | p1++; | |
2792 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
2793 | p1++; | |
2794 | } | |
2795 | ||
2796 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
2797 | error ("Arguments must be catch names."); | |
2798 | ||
2799 | *p1 = 0; | |
2800 | #if 0 | |
2801 | if (function (p)) | |
2802 | { | |
2803 | struct sal_chain *next | |
2804 | = (struct sal_chain *)alloca (sizeof (struct sal_chain)); | |
2805 | next->next = sal_chain; | |
2806 | next->sal = get_catch_sal (p); | |
2807 | sal_chain = next; | |
2808 | goto win; | |
2809 | } | |
2810 | #endif | |
199b2450 | 2811 | printf_unfiltered ("No catch clause for exception %s.\n", p); |
bdbd5f50 | 2812 | #if 0 |
bd5635a1 | 2813 | win: |
bdbd5f50 | 2814 | #endif |
bd5635a1 RP |
2815 | p = p1; |
2816 | while (*p == ' ' || *p == '\t') p++; | |
2817 | } | |
2818 | } | |
bdbd5f50 | 2819 | #endif /* 0 */ |
bd5635a1 RP |
2820 | |
2821 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
2822 | ||
2823 | static struct symtabs_and_lines | |
2824 | get_catch_sals (this_level_only) | |
2825 | int this_level_only; | |
2826 | { | |
bd5635a1 | 2827 | register struct blockvector *bl; |
777bef06 | 2828 | register struct block *block; |
bd5635a1 | 2829 | int index, have_default = 0; |
777bef06 | 2830 | CORE_ADDR pc; |
bd5635a1 RP |
2831 | struct symtabs_and_lines sals; |
2832 | struct sal_chain *sal_chain = 0; | |
2833 | char *blocks_searched; | |
2834 | ||
777bef06 JK |
2835 | /* Not sure whether an error message is always the correct response, |
2836 | but it's better than a core dump. */ | |
2837 | if (selected_frame == NULL) | |
2838 | error ("No selected frame."); | |
2839 | block = get_frame_block (selected_frame); | |
706dc3ce | 2840 | pc = selected_frame->pc; |
777bef06 | 2841 | |
bd5635a1 RP |
2842 | sals.nelts = 0; |
2843 | sals.sals = NULL; | |
2844 | ||
2845 | if (block == 0) | |
2846 | error ("No symbol table info available.\n"); | |
2847 | ||
2848 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
2849 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4ed3a9ea | 2850 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
2851 | |
2852 | while (block != 0) | |
2853 | { | |
2854 | CORE_ADDR end = BLOCK_END (block) - 4; | |
2855 | int last_index; | |
2856 | ||
2857 | if (bl != blockvector_for_pc (end, &index)) | |
2858 | error ("blockvector blotch"); | |
2859 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
2860 | error ("blockvector botch"); | |
2861 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
2862 | index += 1; | |
2863 | ||
2864 | /* Don't print out blocks that have gone by. */ | |
2865 | while (index < last_index | |
2866 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
2867 | index++; | |
2868 | ||
2869 | while (index < last_index | |
2870 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
2871 | { | |
2872 | if (blocks_searched[index] == 0) | |
2873 | { | |
2874 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
2875 | int nsyms; | |
2876 | register int i; | |
2877 | register struct symbol *sym; | |
2878 | ||
2879 | nsyms = BLOCK_NSYMS (b); | |
2880 | ||
2881 | for (i = 0; i < nsyms; i++) | |
2882 | { | |
2883 | sym = BLOCK_SYM (b, i); | |
2d313932 | 2884 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
2885 | { |
2886 | if (have_default) | |
2887 | continue; | |
2888 | have_default = 1; | |
2889 | } | |
2890 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
2891 | { | |
2892 | struct sal_chain *next = (struct sal_chain *) | |
2893 | alloca (sizeof (struct sal_chain)); | |
2894 | next->next = sal_chain; | |
2895 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
2896 | sal_chain = next; | |
2897 | } | |
2898 | } | |
2899 | blocks_searched[index] = 1; | |
2900 | } | |
2901 | index++; | |
2902 | } | |
2903 | if (have_default) | |
2904 | break; | |
2905 | if (sal_chain && this_level_only) | |
2906 | break; | |
2907 | ||
2908 | /* After handling the function's top-level block, stop. | |
2909 | Don't continue to its superblock, the block of | |
2910 | per-file symbols. */ | |
2911 | if (BLOCK_FUNCTION (block)) | |
2912 | break; | |
2913 | block = BLOCK_SUPERBLOCK (block); | |
2914 | } | |
2915 | ||
2916 | if (sal_chain) | |
2917 | { | |
2918 | struct sal_chain *tmp_chain; | |
2919 | ||
2920 | /* Count the number of entries. */ | |
2921 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
2922 | tmp_chain = tmp_chain->next) | |
2923 | index++; | |
2924 | ||
2925 | sals.nelts = index; | |
2926 | sals.sals = (struct symtab_and_line *) | |
2927 | xmalloc (index * sizeof (struct symtab_and_line)); | |
2928 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
2929 | sals.sals[index] = sal_chain->sal; | |
2930 | } | |
2931 | ||
2932 | return sals; | |
2933 | } | |
2934 | ||
2935 | /* Commands to deal with catching exceptions. */ | |
2936 | ||
30875e1c | 2937 | static void |
bd5635a1 RP |
2938 | catch_command_1 (arg, tempflag, from_tty) |
2939 | char *arg; | |
2940 | int tempflag; | |
2941 | int from_tty; | |
2942 | { | |
2943 | /* First, translate ARG into something we can deal with in terms | |
2944 | of breakpoints. */ | |
2945 | ||
2946 | struct symtabs_and_lines sals; | |
2947 | struct symtab_and_line sal; | |
2948 | register struct expression *cond = 0; | |
2949 | register struct breakpoint *b; | |
2950 | char *save_arg; | |
2951 | int i; | |
bd5635a1 RP |
2952 | |
2953 | sal.line = sal.pc = sal.end = 0; | |
2954 | sal.symtab = 0; | |
2955 | ||
2956 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
2957 | are breakpointed. */ | |
2958 | ||
2959 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2960 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2961 | { | |
2962 | /* Grab all active catch clauses. */ | |
2963 | sals = get_catch_sals (0); | |
2964 | } | |
2965 | else | |
2966 | { | |
2967 | /* Grab selected catch clauses. */ | |
fe675038 | 2968 | error ("catch NAME not implemented"); |
bdbd5f50 JG |
2969 | #if 0 |
2970 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 | 2971 | sals = map_catch_names (arg, catch_breakpoint); |
bdbd5f50 | 2972 | #endif |
bd5635a1 RP |
2973 | } |
2974 | ||
2975 | if (! sals.nelts) | |
2976 | return; | |
2977 | ||
2978 | save_arg = arg; | |
2979 | for (i = 0; i < sals.nelts; i++) | |
2980 | { | |
30875e1c | 2981 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
2982 | |
2983 | while (arg && *arg) | |
2984 | { | |
2985 | if (arg[0] == 'i' && arg[1] == 'f' | |
2986 | && (arg[2] == ' ' || arg[2] == '\t')) | |
30875e1c SG |
2987 | cond = parse_exp_1 ((arg += 2, &arg), |
2988 | block_for_pc (sals.sals[i].pc), 0); | |
bd5635a1 RP |
2989 | else |
2990 | error ("Junk at end of arguments."); | |
2991 | } | |
2992 | arg = save_arg; | |
bd5635a1 RP |
2993 | } |
2994 | ||
2995 | for (i = 0; i < sals.nelts; i++) | |
2996 | { | |
2997 | sal = sals.sals[i]; | |
2998 | ||
2999 | if (from_tty) | |
3000 | describe_other_breakpoints (sal.pc); | |
3001 | ||
3002 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
3003 | set_breakpoint_count (breakpoint_count + 1); |
3004 | b->number = breakpoint_count; | |
3005 | b->type = bp_breakpoint; | |
bd5635a1 | 3006 | b->cond = cond; |
30875e1c | 3007 | b->enable = enabled; |
e8bf33c4 | 3008 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 | 3009 | |
d889f6b7 | 3010 | mention (b); |
bd5635a1 RP |
3011 | } |
3012 | ||
3013 | if (sals.nelts > 1) | |
3014 | { | |
199b2450 TL |
3015 | printf_unfiltered ("Multiple breakpoints were set.\n"); |
3016 | printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 3017 | } |
c8950965 | 3018 | free ((PTR)sals.sals); |
bd5635a1 RP |
3019 | } |
3020 | ||
e8bf33c4 JK |
3021 | /* Used by the gui, could be made a worker for other things. */ |
3022 | ||
3023 | struct breakpoint * | |
3024 | set_breakpoint_sal (sal) | |
3025 | struct symtab_and_line sal; | |
3026 | { | |
3027 | struct breakpoint *b; | |
3028 | b = set_raw_breakpoint (sal); | |
3029 | set_breakpoint_count (breakpoint_count + 1); | |
3030 | b->number = breakpoint_count; | |
3031 | b->type = bp_breakpoint; | |
3032 | b->cond = 0; | |
3033 | b->thread = -1; | |
3034 | return b; | |
3035 | } | |
3036 | ||
bdbd5f50 JG |
3037 | #if 0 |
3038 | /* These aren't used; I don't know what they were for. */ | |
bd5635a1 RP |
3039 | /* Disable breakpoints on all catch clauses described in ARGS. */ |
3040 | static void | |
3041 | disable_catch (args) | |
3042 | char *args; | |
3043 | { | |
3044 | /* Map the disable command to catch clauses described in ARGS. */ | |
3045 | } | |
3046 | ||
3047 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
3048 | static void | |
3049 | enable_catch (args) | |
3050 | char *args; | |
3051 | { | |
3052 | /* Map the disable command to catch clauses described in ARGS. */ | |
3053 | } | |
3054 | ||
3055 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
3056 | static void | |
3057 | delete_catch (args) | |
3058 | char *args; | |
3059 | { | |
3060 | /* Map the delete command to catch clauses described in ARGS. */ | |
3061 | } | |
bdbd5f50 | 3062 | #endif /* 0 */ |
bd5635a1 RP |
3063 | |
3064 | static void | |
3065 | catch_command (arg, from_tty) | |
3066 | char *arg; | |
3067 | int from_tty; | |
3068 | { | |
3069 | catch_command_1 (arg, 0, from_tty); | |
3070 | } | |
3071 | \f | |
3072 | static void | |
3073 | clear_command (arg, from_tty) | |
3074 | char *arg; | |
3075 | int from_tty; | |
3076 | { | |
3077 | register struct breakpoint *b, *b1; | |
3078 | struct symtabs_and_lines sals; | |
3079 | struct symtab_and_line sal; | |
3080 | register struct breakpoint *found; | |
3081 | int i; | |
3082 | ||
3083 | if (arg) | |
3084 | { | |
3085 | sals = decode_line_spec (arg, 1); | |
3086 | } | |
3087 | else | |
3088 | { | |
3089 | sals.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); | |
3090 | sal.line = default_breakpoint_line; | |
3091 | sal.symtab = default_breakpoint_symtab; | |
3092 | sal.pc = 0; | |
3093 | if (sal.symtab == 0) | |
3094 | error ("No source file specified."); | |
3095 | ||
3096 | sals.sals[0] = sal; | |
3097 | sals.nelts = 1; | |
3098 | } | |
3099 | ||
3100 | for (i = 0; i < sals.nelts; i++) | |
3101 | { | |
3102 | /* If exact pc given, clear bpts at that pc. | |
3103 | But if sal.pc is zero, clear all bpts on specified line. */ | |
3104 | sal = sals.sals[i]; | |
3105 | found = (struct breakpoint *) 0; | |
3106 | while (breakpoint_chain | |
d889f6b7 JK |
3107 | && (sal.pc |
3108 | ? breakpoint_chain->address == sal.pc | |
3109 | : (breakpoint_chain->source_file != NULL | |
3110 | && sal.symtab != NULL | |
3111 | && STREQ (breakpoint_chain->source_file, | |
3112 | sal.symtab->filename) | |
bd5635a1 RP |
3113 | && breakpoint_chain->line_number == sal.line))) |
3114 | { | |
3115 | b1 = breakpoint_chain; | |
3116 | breakpoint_chain = b1->next; | |
3117 | b1->next = found; | |
3118 | found = b1; | |
3119 | } | |
3120 | ||
3121 | ALL_BREAKPOINTS (b) | |
3122 | while (b->next | |
30875e1c | 3123 | && b->next->type != bp_watchpoint |
999dd04b | 3124 | && b->next->type != bp_hardware_watchpoint |
11054881 KH |
3125 | && b->next->type != bp_read_watchpoint |
3126 | && b->next->type != bp_access_watchpoint | |
d889f6b7 JK |
3127 | && (sal.pc |
3128 | ? b->next->address == sal.pc | |
3129 | : (b->next->source_file != NULL | |
3130 | && sal.symtab != NULL | |
3131 | && STREQ (b->next->source_file, sal.symtab->filename) | |
bd5635a1 RP |
3132 | && b->next->line_number == sal.line))) |
3133 | { | |
3134 | b1 = b->next; | |
3135 | b->next = b1->next; | |
3136 | b1->next = found; | |
3137 | found = b1; | |
3138 | } | |
3139 | ||
3140 | if (found == 0) | |
3141 | { | |
3142 | if (arg) | |
3143 | error ("No breakpoint at %s.", arg); | |
3144 | else | |
3145 | error ("No breakpoint at this line."); | |
3146 | } | |
3147 | ||
3148 | if (found->next) from_tty = 1; /* Always report if deleted more than one */ | |
199b2450 | 3149 | if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); |
6c803036 | 3150 | breakpoints_changed (); |
bd5635a1 RP |
3151 | while (found) |
3152 | { | |
199b2450 | 3153 | if (from_tty) printf_unfiltered ("%d ", found->number); |
bd5635a1 RP |
3154 | b1 = found->next; |
3155 | delete_breakpoint (found); | |
3156 | found = b1; | |
3157 | } | |
199b2450 | 3158 | if (from_tty) putchar_unfiltered ('\n'); |
bd5635a1 | 3159 | } |
c8950965 | 3160 | free ((PTR)sals.sals); |
bd5635a1 RP |
3161 | } |
3162 | \f | |
3163 | /* Delete breakpoint in BS if they are `delete' breakpoints. | |
3164 | This is called after any breakpoint is hit, or after errors. */ | |
3165 | ||
3166 | void | |
3167 | breakpoint_auto_delete (bs) | |
3168 | bpstat bs; | |
3169 | { | |
3170 | for (; bs; bs = bs->next) | |
e8bf33c4 | 3171 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
cef4c2e7 | 3172 | && bs->stop) |
bd5635a1 RP |
3173 | delete_breakpoint (bs->breakpoint_at); |
3174 | } | |
3175 | ||
3176 | /* Delete a breakpoint and clean up all traces of it in the data structures. */ | |
3177 | ||
30875e1c | 3178 | void |
bd5635a1 RP |
3179 | delete_breakpoint (bpt) |
3180 | struct breakpoint *bpt; | |
3181 | { | |
3182 | register struct breakpoint *b; | |
3183 | register bpstat bs; | |
3184 | ||
754e5da2 SG |
3185 | if (delete_breakpoint_hook) |
3186 | delete_breakpoint_hook (bpt); | |
3187 | ||
bd5635a1 | 3188 | if (bpt->inserted) |
999dd04b JL |
3189 | remove_breakpoint (bpt); |
3190 | ||
bd5635a1 RP |
3191 | if (breakpoint_chain == bpt) |
3192 | breakpoint_chain = bpt->next; | |
3193 | ||
3194 | ALL_BREAKPOINTS (b) | |
3195 | if (b->next == bpt) | |
3196 | { | |
3197 | b->next = bpt->next; | |
3198 | break; | |
3199 | } | |
3200 | ||
3201 | check_duplicates (bpt->address); | |
fe675038 JK |
3202 | /* If this breakpoint was inserted, and there is another breakpoint |
3203 | at the same address, we need to insert the other breakpoint. */ | |
999dd04b | 3204 | if (bpt->inserted |
11054881 KH |
3205 | && bpt->type != bp_hardware_watchpoint |
3206 | && bpt->type != bp_read_watchpoint | |
3207 | && bpt->type != bp_access_watchpoint) | |
fe675038 JK |
3208 | { |
3209 | ALL_BREAKPOINTS (b) | |
ebad9e90 JK |
3210 | if (b->address == bpt->address |
3211 | && !b->duplicate | |
3212 | && b->enable != disabled) | |
fe675038 JK |
3213 | { |
3214 | int val; | |
3215 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
3216 | if (val != 0) | |
3217 | { | |
05052b63 | 3218 | target_terminal_ours_for_output (); |
199b2450 | 3219 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
fe675038 JK |
3220 | memory_error (val, b->address); /* which bombs us out */ |
3221 | } | |
3222 | else | |
3223 | b->inserted = 1; | |
3224 | } | |
3225 | } | |
bd5635a1 RP |
3226 | |
3227 | free_command_lines (&bpt->commands); | |
3228 | if (bpt->cond) | |
d889f6b7 | 3229 | free (bpt->cond); |
bd5635a1 | 3230 | if (bpt->cond_string != NULL) |
d889f6b7 | 3231 | free (bpt->cond_string); |
bd5635a1 | 3232 | if (bpt->addr_string != NULL) |
d889f6b7 | 3233 | free (bpt->addr_string); |
0eaaa46a | 3234 | if (bpt->exp_string != NULL) |
d889f6b7 JK |
3235 | free (bpt->exp_string); |
3236 | if (bpt->source_file != NULL) | |
3237 | free (bpt->source_file); | |
bd5635a1 | 3238 | |
bd5635a1 | 3239 | /* Be sure no bpstat's are pointing at it after it's been freed. */ |
05052b63 JK |
3240 | /* FIXME, how can we find all bpstat's? |
3241 | We just check stop_bpstat for now. */ | |
bd5635a1 RP |
3242 | for (bs = stop_bpstat; bs; bs = bs->next) |
3243 | if (bs->breakpoint_at == bpt) | |
3244 | bs->breakpoint_at = NULL; | |
c8950965 | 3245 | free ((PTR)bpt); |
bd5635a1 RP |
3246 | } |
3247 | ||
bd5635a1 RP |
3248 | static void |
3249 | delete_command (arg, from_tty) | |
3250 | char *arg; | |
3251 | int from_tty; | |
3252 | { | |
3253 | ||
3254 | if (arg == 0) | |
3255 | { | |
3256 | /* Ask user only if there are some breakpoints to delete. */ | |
3257 | if (!from_tty | |
e8bf33c4 | 3258 | || (breakpoint_chain && query ("Delete all breakpoints? "))) |
bd5635a1 RP |
3259 | { |
3260 | /* No arg; clear all breakpoints. */ | |
3261 | while (breakpoint_chain) | |
3262 | delete_breakpoint (breakpoint_chain); | |
3263 | } | |
3264 | } | |
3265 | else | |
3266 | map_breakpoint_numbers (arg, delete_breakpoint); | |
3267 | } | |
3268 | ||
bdbd5f50 JG |
3269 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
3270 | The value we return ends up being the return value from catch_errors. | |
3271 | Unused in this case. */ | |
3272 | ||
3273 | static int | |
bd5635a1 | 3274 | breakpoint_re_set_one (bint) |
bdbd5f50 | 3275 | char *bint; |
bd5635a1 RP |
3276 | { |
3277 | struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */ | |
11054881 | 3278 | struct value *mark; |
bd5635a1 RP |
3279 | int i; |
3280 | struct symtabs_and_lines sals; | |
bd5635a1 | 3281 | char *s; |
30875e1c | 3282 | enum enable save_enable; |
bd5635a1 | 3283 | |
80ba48f5 | 3284 | switch (b->type) |
bd5635a1 | 3285 | { |
80ba48f5 | 3286 | case bp_breakpoint: |
11054881 | 3287 | case bp_hardware_breakpoint: |
80ba48f5 SG |
3288 | if (b->addr_string == NULL) |
3289 | { | |
3290 | /* Anything without a string can't be re-set. */ | |
3291 | delete_breakpoint (b); | |
3292 | return 0; | |
3293 | } | |
30875e1c SG |
3294 | /* In case we have a problem, disable this breakpoint. We'll restore |
3295 | its status if we succeed. */ | |
3296 | save_enable = b->enable; | |
3297 | b->enable = disabled; | |
3298 | ||
706dc3ce JL |
3299 | set_language (b->language); |
3300 | input_radix = b->input_radix; | |
bd5635a1 | 3301 | s = b->addr_string; |
d889f6b7 | 3302 | sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
3303 | for (i = 0; i < sals.nelts; i++) |
3304 | { | |
30875e1c | 3305 | resolve_sal_pc (&sals.sals[i]); |
fee933f1 RP |
3306 | |
3307 | /* Reparse conditions, they might contain references to the | |
3308 | old symtab. */ | |
3309 | if (b->cond_string != NULL) | |
3310 | { | |
3311 | s = b->cond_string; | |
3312 | if (b->cond) | |
3313 | free ((PTR)b->cond); | |
3314 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); | |
3315 | } | |
3316 | ||
3317 | /* We need to re-set the breakpoint if the address changes...*/ | |
d889f6b7 | 3318 | if (b->address != sals.sals[i].pc |
fee933f1 RP |
3319 | /* ...or new and old breakpoints both have source files, and |
3320 | the source file name or the line number changes... */ | |
d889f6b7 JK |
3321 | || (b->source_file != NULL |
3322 | && sals.sals[i].symtab != NULL | |
3323 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
3324 | || b->line_number != sals.sals[i].line) | |
fee933f1 RP |
3325 | ) |
3326 | /* ...or we switch between having a source file and not having | |
3327 | one. */ | |
3328 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
3329 | ) | |
bd5635a1 | 3330 | { |
d889f6b7 JK |
3331 | if (b->source_file != NULL) |
3332 | free (b->source_file); | |
3333 | if (sals.sals[i].symtab == NULL) | |
3334 | b->source_file = NULL; | |
3335 | else | |
3336 | b->source_file = | |
3337 | savestring (sals.sals[i].symtab->filename, | |
3338 | strlen (sals.sals[i].symtab->filename)); | |
8537ba60 SG |
3339 | b->line_number = sals.sals[i].line; |
3340 | b->address = sals.sals[i].pc; | |
bd5635a1 | 3341 | |
8537ba60 | 3342 | check_duplicates (b->address); |
bd5635a1 | 3343 | |
8537ba60 | 3344 | mention (b); |
6c803036 JK |
3345 | |
3346 | /* Might be better to do this just once per breakpoint_re_set, | |
3347 | rather than once for every breakpoint. */ | |
3348 | breakpoints_changed (); | |
8537ba60 | 3349 | } |
30875e1c | 3350 | b->enable = save_enable; /* Restore it, this worked. */ |
bd5635a1 | 3351 | } |
c8950965 | 3352 | free ((PTR)sals.sals); |
80ba48f5 | 3353 | break; |
2d313932 | 3354 | |
80ba48f5 | 3355 | case bp_watchpoint: |
999dd04b | 3356 | case bp_hardware_watchpoint: |
11054881 KH |
3357 | case bp_read_watchpoint: |
3358 | case bp_access_watchpoint: | |
0eaaa46a | 3359 | innermost_block = NULL; |
0a97f6c4 JK |
3360 | /* The issue arises of what context to evaluate this in. The same |
3361 | one as when it was set, but what does that mean when symbols have | |
3362 | been re-read? We could save the filename and functionname, but | |
3363 | if the context is more local than that, the best we could do would | |
3364 | be something like how many levels deep and which index at that | |
3365 | particular level, but that's going to be less stable than filenames | |
3366 | or functionnames. */ | |
3367 | /* So for now, just use a global context. */ | |
0eaaa46a JK |
3368 | b->exp = parse_expression (b->exp_string); |
3369 | b->exp_valid_block = innermost_block; | |
11054881 | 3370 | mark = value_mark (); |
0eaaa46a JK |
3371 | b->val = evaluate_expression (b->exp); |
3372 | release_value (b->val); | |
3373 | if (VALUE_LAZY (b->val)) | |
3374 | value_fetch_lazy (b->val); | |
3375 | ||
2d313932 JK |
3376 | if (b->cond_string != NULL) |
3377 | { | |
3378 | s = b->cond_string; | |
3379 | b->cond = parse_exp_1 (&s, (struct block *)0, 0); | |
3380 | } | |
cabd4da6 JK |
3381 | if (b->enable == enabled) |
3382 | mention (b); | |
11054881 | 3383 | value_free_to_mark (mark); |
80ba48f5 | 3384 | break; |
2d313932 | 3385 | |
80ba48f5 SG |
3386 | default: |
3387 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
2d313932 | 3388 | /* fall through */ |
80ba48f5 SG |
3389 | case bp_until: |
3390 | case bp_finish: | |
3391 | case bp_longjmp: | |
3392 | case bp_longjmp_resume: | |
999dd04b | 3393 | case bp_watchpoint_scope: |
cf3e377e | 3394 | case bp_call_dummy: |
80ba48f5 SG |
3395 | delete_breakpoint (b); |
3396 | break; | |
bd5635a1 | 3397 | } |
80ba48f5 | 3398 | |
bdbd5f50 | 3399 | return 0; |
bd5635a1 RP |
3400 | } |
3401 | ||
3402 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
3403 | void | |
3404 | breakpoint_re_set () | |
3405 | { | |
cba0d141 | 3406 | struct breakpoint *b, *temp; |
706dc3ce JL |
3407 | enum language save_language; |
3408 | int save_input_radix; | |
30875e1c SG |
3409 | static char message1[] = "Error in re-setting breakpoint %d:\n"; |
3410 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 | 3411 | |
706dc3ce JL |
3412 | save_language = current_language->la_language; |
3413 | save_input_radix = input_radix; | |
cba0d141 | 3414 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 3415 | { |
2d313932 | 3416 | sprintf (message, message1, b->number); /* Format possible error msg */ |
fe675038 JK |
3417 | catch_errors (breakpoint_re_set_one, (char *) b, message, |
3418 | RETURN_MASK_ALL); | |
bd5635a1 | 3419 | } |
706dc3ce JL |
3420 | set_language (save_language); |
3421 | input_radix = save_input_radix; | |
bd5635a1 | 3422 | |
80ba48f5 SG |
3423 | create_longjmp_breakpoint("longjmp"); |
3424 | create_longjmp_breakpoint("_longjmp"); | |
3425 | create_longjmp_breakpoint("siglongjmp"); | |
3426 | create_longjmp_breakpoint(NULL); | |
3427 | ||
1eeba686 PB |
3428 | #if 0 |
3429 | /* Took this out (temporaliy at least), since it produces an extra | |
3430 | blank line at startup. This messes up the gdbtests. -PB */ | |
bd5635a1 RP |
3431 | /* Blank line to finish off all those mention() messages we just printed. */ |
3432 | printf_filtered ("\n"); | |
1eeba686 | 3433 | #endif |
bd5635a1 RP |
3434 | } |
3435 | \f | |
3436 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
3437 | If from_tty is nonzero, it prints a message to that effect, | |
3438 | which ends with a period (no newline). */ | |
3439 | ||
3440 | void | |
3441 | set_ignore_count (bptnum, count, from_tty) | |
3442 | int bptnum, count, from_tty; | |
3443 | { | |
3444 | register struct breakpoint *b; | |
3445 | ||
3446 | if (count < 0) | |
3447 | count = 0; | |
3448 | ||
3449 | ALL_BREAKPOINTS (b) | |
3450 | if (b->number == bptnum) | |
3451 | { | |
3452 | b->ignore_count = count; | |
3453 | if (!from_tty) | |
3454 | return; | |
3455 | else if (count == 0) | |
423e9664 SG |
3456 | printf_filtered ("Will stop next time breakpoint %d is reached.", |
3457 | bptnum); | |
bd5635a1 | 3458 | else if (count == 1) |
423e9664 SG |
3459 | printf_filtered ("Will ignore next crossing of breakpoint %d.", |
3460 | bptnum); | |
bd5635a1 | 3461 | else |
423e9664 | 3462 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", |
bd5635a1 | 3463 | count, bptnum); |
6c803036 | 3464 | breakpoints_changed (); |
bd5635a1 RP |
3465 | return; |
3466 | } | |
3467 | ||
3468 | error ("No breakpoint number %d.", bptnum); | |
3469 | } | |
3470 | ||
3471 | /* Clear the ignore counts of all breakpoints. */ | |
3472 | void | |
3473 | breakpoint_clear_ignore_counts () | |
3474 | { | |
3475 | struct breakpoint *b; | |
3476 | ||
3477 | ALL_BREAKPOINTS (b) | |
3478 | b->ignore_count = 0; | |
3479 | } | |
3480 | ||
3481 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
3482 | ||
3483 | static void | |
3484 | ignore_command (args, from_tty) | |
3485 | char *args; | |
3486 | int from_tty; | |
3487 | { | |
3488 | char *p = args; | |
3489 | register int num; | |
3490 | ||
3491 | if (p == 0) | |
3492 | error_no_arg ("a breakpoint number"); | |
3493 | ||
3494 | num = get_number (&p); | |
3495 | ||
3496 | if (*p == 0) | |
3497 | error ("Second argument (specified ignore-count) is missing."); | |
3498 | ||
bdbd5f50 JG |
3499 | set_ignore_count (num, |
3500 | longest_to_int (value_as_long (parse_and_eval (p))), | |
3501 | from_tty); | |
423e9664 | 3502 | printf_filtered ("\n"); |
6c803036 | 3503 | breakpoints_changed (); |
bd5635a1 RP |
3504 | } |
3505 | \f | |
3506 | /* Call FUNCTION on each of the breakpoints | |
3507 | whose numbers are given in ARGS. */ | |
3508 | ||
3509 | static void | |
3510 | map_breakpoint_numbers (args, function) | |
3511 | char *args; | |
30875e1c | 3512 | void (*function) PARAMS ((struct breakpoint *)); |
bd5635a1 RP |
3513 | { |
3514 | register char *p = args; | |
3515 | char *p1; | |
3516 | register int num; | |
3517 | register struct breakpoint *b; | |
3518 | ||
3519 | if (p == 0) | |
3520 | error_no_arg ("one or more breakpoint numbers"); | |
3521 | ||
3522 | while (*p) | |
3523 | { | |
3524 | p1 = p; | |
3525 | ||
3526 | num = get_number (&p1); | |
3527 | ||
3528 | ALL_BREAKPOINTS (b) | |
3529 | if (b->number == num) | |
3530 | { | |
999dd04b | 3531 | struct breakpoint *related_breakpoint = b->related_breakpoint; |
bd5635a1 | 3532 | function (b); |
999dd04b JL |
3533 | if (related_breakpoint) |
3534 | function (related_breakpoint); | |
bd5635a1 RP |
3535 | goto win; |
3536 | } | |
199b2450 | 3537 | printf_unfiltered ("No breakpoint number %d.\n", num); |
bd5635a1 RP |
3538 | win: |
3539 | p = p1; | |
3540 | } | |
3541 | } | |
3542 | ||
e8bf33c4 | 3543 | void |
bd5635a1 RP |
3544 | enable_breakpoint (bpt) |
3545 | struct breakpoint *bpt; | |
3546 | { | |
706dc3ce | 3547 | struct frame_info *save_selected_frame = NULL; |
fa99ebe1 | 3548 | int save_selected_frame_level = -1; |
11054881 KH |
3549 | int target_resources_ok, other_type_used; |
3550 | struct value *mark; | |
fa99ebe1 | 3551 | |
11054881 KH |
3552 | if (bpt->type == bp_hardware_breakpoint) |
3553 | { | |
3554 | int i; | |
3555 | i = hw_breakpoint_used_count(); | |
3556 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3557 | bp_hardware_breakpoint, i+1, 0); | |
3558 | if (target_resources_ok == 0) | |
3559 | error ("No hardware breakpoint support in the target."); | |
3560 | else if (target_resources_ok < 0) | |
3561 | error ("Hardware breakpoints used exceeds limit."); | |
3562 | } | |
bd5635a1 | 3563 | bpt->enable = enabled; |
bd5635a1 | 3564 | check_duplicates (bpt->address); |
11054881 KH |
3565 | |
3566 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3567 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
bd5635a1 | 3568 | { |
fa99ebe1 | 3569 | if (bpt->exp_valid_block != NULL) |
f266e564 | 3570 | { |
706dc3ce JL |
3571 | struct frame_info *fr = |
3572 | find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
fa99ebe1 JK |
3573 | if (fr == NULL) |
3574 | { | |
3575 | printf_filtered ("\ | |
f266e564 JK |
3576 | Cannot enable watchpoint %d because the block in which its expression\n\ |
3577 | is valid is not currently in scope.\n", bpt->number); | |
fa99ebe1 JK |
3578 | bpt->enable = disabled; |
3579 | return; | |
3580 | } | |
999dd04b | 3581 | |
fa99ebe1 JK |
3582 | save_selected_frame = selected_frame; |
3583 | save_selected_frame_level = selected_frame_level; | |
3584 | select_frame (fr, -1); | |
f266e564 JK |
3585 | } |
3586 | ||
bd5635a1 | 3587 | value_free (bpt->val); |
11054881 | 3588 | mark = value_mark (); |
bd5635a1 RP |
3589 | bpt->val = evaluate_expression (bpt->exp); |
3590 | release_value (bpt->val); | |
2d313932 JK |
3591 | if (VALUE_LAZY (bpt->val)) |
3592 | value_fetch_lazy (bpt->val); | |
fa99ebe1 | 3593 | |
11054881 KH |
3594 | if (bpt->type == bp_hardware_watchpoint || |
3595 | bpt->type == bp_read_watchpoint || | |
3596 | bpt->type == bp_access_watchpoint) | |
3597 | { | |
3598 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
557f3a0e SS |
3599 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); |
3600 | ||
11054881 | 3601 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( |
557f3a0e | 3602 | bpt->type, i + mem_cnt, other_type_used); |
11054881 KH |
3603 | /* we can consider of type is bp_hardware_watchpoint, convert to |
3604 | bp_watchpoint in the following condition */ | |
3605 | if (target_resources_ok < 0) | |
3606 | { | |
3607 | printf_filtered("\ | |
3608 | Cannot enable watchpoint %d because target watch resources\n\ | |
3609 | have been allocated for other watchpoints.\n", bpt->number); | |
3610 | bpt->enable = disabled; | |
3611 | value_free_to_mark (mark); | |
3612 | return; | |
3613 | } | |
3614 | } | |
3615 | ||
fa99ebe1 JK |
3616 | if (save_selected_frame_level >= 0) |
3617 | select_frame (save_selected_frame, save_selected_frame_level); | |
11054881 | 3618 | value_free_to_mark (mark); |
bd5635a1 | 3619 | } |
e8bf33c4 JK |
3620 | |
3621 | if (modify_breakpoint_hook) | |
3622 | modify_breakpoint_hook (bpt); | |
bd5635a1 RP |
3623 | } |
3624 | ||
bdbd5f50 | 3625 | /* ARGSUSED */ |
bd5635a1 RP |
3626 | static void |
3627 | enable_command (args, from_tty) | |
3628 | char *args; | |
3629 | int from_tty; | |
3630 | { | |
3631 | struct breakpoint *bpt; | |
3632 | if (args == 0) | |
3633 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3634 | switch (bpt->type) |
3635 | { | |
3636 | case bp_breakpoint: | |
11054881 | 3637 | case bp_hardware_breakpoint: |
423e9664 | 3638 | case bp_watchpoint: |
999dd04b | 3639 | case bp_hardware_watchpoint: |
11054881 KH |
3640 | case bp_read_watchpoint: |
3641 | case bp_access_watchpoint: | |
423e9664 SG |
3642 | enable_breakpoint (bpt); |
3643 | default: | |
3644 | continue; | |
3645 | } | |
bd5635a1 RP |
3646 | else |
3647 | map_breakpoint_numbers (args, enable_breakpoint); | |
3648 | } | |
3649 | ||
e8bf33c4 | 3650 | void |
bd5635a1 RP |
3651 | disable_breakpoint (bpt) |
3652 | struct breakpoint *bpt; | |
3653 | { | |
999dd04b JL |
3654 | /* Never disable a watchpoint scope breakpoint; we want to |
3655 | hit them when we leave scope so we can delete both the | |
3656 | watchpoint and its scope breakpoint at that time. */ | |
3657 | if (bpt->type == bp_watchpoint_scope) | |
3658 | return; | |
3659 | ||
bd5635a1 RP |
3660 | bpt->enable = disabled; |
3661 | ||
bd5635a1 | 3662 | check_duplicates (bpt->address); |
e8bf33c4 JK |
3663 | |
3664 | if (modify_breakpoint_hook) | |
3665 | modify_breakpoint_hook (bpt); | |
bd5635a1 RP |
3666 | } |
3667 | ||
bdbd5f50 | 3668 | /* ARGSUSED */ |
bd5635a1 RP |
3669 | static void |
3670 | disable_command (args, from_tty) | |
3671 | char *args; | |
3672 | int from_tty; | |
3673 | { | |
3674 | register struct breakpoint *bpt; | |
3675 | if (args == 0) | |
3676 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3677 | switch (bpt->type) |
3678 | { | |
3679 | case bp_breakpoint: | |
11054881 KH |
3680 | case bp_hardware_breakpoint: |
3681 | case bp_watchpoint: | |
3682 | case bp_hardware_watchpoint: | |
3683 | case bp_read_watchpoint: | |
3684 | case bp_access_watchpoint: | |
423e9664 SG |
3685 | disable_breakpoint (bpt); |
3686 | default: | |
3687 | continue; | |
3688 | } | |
bd5635a1 RP |
3689 | else |
3690 | map_breakpoint_numbers (args, disable_breakpoint); | |
3691 | } | |
3692 | ||
3693 | static void | |
3694 | enable_once_breakpoint (bpt) | |
3695 | struct breakpoint *bpt; | |
3696 | { | |
706dc3ce | 3697 | struct frame_info *save_selected_frame = NULL; |
11054881 KH |
3698 | int save_selected_frame_level = -1; |
3699 | int target_resources_ok, other_type_used; | |
3700 | struct value *mark; | |
3701 | ||
3702 | if (bpt->type == bp_hardware_breakpoint) | |
3703 | { | |
3704 | int i; | |
3705 | i = hw_breakpoint_used_count(); | |
3706 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3707 | bp_hardware_breakpoint, i+1, 0); | |
3708 | if (target_resources_ok == 0) | |
3709 | error ("No hardware breakpoint support in the target."); | |
3710 | else if (target_resources_ok < 0) | |
3711 | error ("Hardware breakpoints used exceeds limit."); | |
3712 | } | |
3713 | ||
30875e1c SG |
3714 | bpt->enable = enabled; |
3715 | bpt->disposition = disable; | |
bd5635a1 | 3716 | check_duplicates (bpt->address); |
6c803036 | 3717 | breakpoints_changed (); |
11054881 KH |
3718 | |
3719 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3720 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
3721 | { | |
3722 | if (bpt->exp_valid_block != NULL) | |
3723 | { | |
706dc3ce JL |
3724 | struct frame_info *fr = |
3725 | find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
11054881 KH |
3726 | if (fr == NULL) |
3727 | { | |
3728 | printf_filtered ("\ | |
3729 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
3730 | is valid is not currently in scope.\n", bpt->number); | |
3731 | bpt->enable = disabled; | |
3732 | return; | |
3733 | } | |
3734 | ||
3735 | save_selected_frame = selected_frame; | |
3736 | save_selected_frame_level = selected_frame_level; | |
3737 | select_frame (fr, -1); | |
3738 | } | |
3739 | ||
3740 | value_free (bpt->val); | |
3741 | mark = value_mark (); | |
3742 | bpt->val = evaluate_expression (bpt->exp); | |
3743 | release_value (bpt->val); | |
3744 | if (VALUE_LAZY (bpt->val)) | |
3745 | value_fetch_lazy (bpt->val); | |
3746 | ||
3747 | if (bpt->type == bp_hardware_watchpoint || | |
3748 | bpt->type == bp_read_watchpoint || | |
3749 | bpt->type == bp_access_watchpoint) | |
3750 | { | |
3751 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3752 | int mem_cnt = can_use_hardware_watchpoint(bpt->val); | |
3753 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3754 | bpt->type, i+mem_cnt, other_type_used); | |
3755 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
3756 | bp_watchpoint in the following condition */ | |
3757 | if (target_resources_ok < 0) | |
3758 | { | |
3759 | printf_filtered("\ | |
3760 | Cannot enable watchpoint %d because target watch resources\n\ | |
3761 | have been allocated for other watchpoints.\n", bpt->number); | |
3762 | bpt->enable = disabled; | |
3763 | value_free_to_mark (mark); | |
3764 | } | |
3765 | } | |
3766 | ||
3767 | if (save_selected_frame_level >= 0) | |
3768 | select_frame (save_selected_frame, save_selected_frame_level); | |
3769 | value_free_to_mark (mark); | |
3770 | } | |
bd5635a1 RP |
3771 | } |
3772 | ||
bdbd5f50 | 3773 | /* ARGSUSED */ |
bd5635a1 RP |
3774 | static void |
3775 | enable_once_command (args, from_tty) | |
3776 | char *args; | |
3777 | int from_tty; | |
3778 | { | |
3779 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
3780 | } | |
3781 | ||
3782 | static void | |
3783 | enable_delete_breakpoint (bpt) | |
3784 | struct breakpoint *bpt; | |
3785 | { | |
30875e1c | 3786 | bpt->enable = enabled; |
e8bf33c4 | 3787 | bpt->disposition = del; |
bd5635a1 RP |
3788 | |
3789 | check_duplicates (bpt->address); | |
6c803036 | 3790 | breakpoints_changed (); |
bd5635a1 RP |
3791 | } |
3792 | ||
bdbd5f50 | 3793 | /* ARGSUSED */ |
bd5635a1 RP |
3794 | static void |
3795 | enable_delete_command (args, from_tty) | |
3796 | char *args; | |
3797 | int from_tty; | |
3798 | { | |
3799 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
3800 | } | |
3801 | \f | |
706dc3ce JL |
3802 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
3803 | ||
bd5635a1 RP |
3804 | struct symtabs_and_lines |
3805 | decode_line_spec_1 (string, funfirstline) | |
3806 | char *string; | |
3807 | int funfirstline; | |
3808 | { | |
3809 | struct symtabs_and_lines sals; | |
3810 | if (string == 0) | |
3811 | error ("Empty line specification."); | |
3812 | if (default_breakpoint_valid) | |
3813 | sals = decode_line_1 (&string, funfirstline, | |
d889f6b7 JK |
3814 | default_breakpoint_symtab, default_breakpoint_line, |
3815 | (char ***)NULL); | |
bd5635a1 | 3816 | else |
d889f6b7 JK |
3817 | sals = decode_line_1 (&string, funfirstline, |
3818 | (struct symtab *)NULL, 0, (char ***)NULL); | |
bd5635a1 RP |
3819 | if (*string) |
3820 | error ("Junk at end of line specification: %s", string); | |
3821 | return sals; | |
3822 | } | |
3823 | \f | |
bd5635a1 RP |
3824 | void |
3825 | _initialize_breakpoint () | |
3826 | { | |
3827 | breakpoint_chain = 0; | |
3828 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
3829 | before a breakpoint is set. */ | |
3830 | breakpoint_count = 0; | |
3831 | ||
3832 | add_com ("ignore", class_breakpoint, ignore_command, | |
557f3a0e SS |
3833 | "Set ignore-count of breakpoint number N to COUNT.\n\ |
3834 | Usage is `ignore N COUNT'."); | |
bd5635a1 RP |
3835 | |
3836 | add_com ("commands", class_breakpoint, commands_command, | |
3837 | "Set commands to be executed when a breakpoint is hit.\n\ | |
3838 | Give breakpoint number as argument after \"commands\".\n\ | |
3839 | With no argument, the targeted breakpoint is the last one set.\n\ | |
3840 | The commands themselves follow starting on the next line.\n\ | |
3841 | Type a line containing \"end\" to indicate the end of them.\n\ | |
3842 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
3843 | then no output is printed when it is hit, except what the commands print."); | |
3844 | ||
3845 | add_com ("condition", class_breakpoint, condition_command, | |
3846 | "Specify breakpoint number N to break only if COND is true.\n\ | |
557f3a0e SS |
3847 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
3848 | expression to be evaluated whenever breakpoint N is reached. "); | |
bd5635a1 RP |
3849 | |
3850 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
3851 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c4de6b30 JK |
3852 | Like \"break\" except the breakpoint is only temporary,\n\ |
3853 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
3854 | by using \"enable delete\" on the breakpoint number."); | |
bd5635a1 | 3855 | |
11054881 KH |
3856 | add_com ("hbreak", class_breakpoint, hbreak_command, |
3857 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3858 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
3859 | some target hardware may not have this support."); | |
3860 | ||
3861 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
3862 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3863 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
3864 | so it will be deleted when hit."); | |
3865 | ||
bd5635a1 RP |
3866 | add_prefix_cmd ("enable", class_breakpoint, enable_command, |
3867 | "Enable some breakpoints.\n\ | |
3868 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3869 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
3870 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3871 | With a subcommand you can enable temporarily.", | |
3872 | &enablelist, "enable ", 1, &cmdlist); | |
3873 | ||
3874 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
3875 | "Enable some breakpoints.\n\ | |
3876 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3877 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3878 | May be abbreviated to simply \"enable\".\n", | |
3879 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); | |
3880 | ||
3881 | add_cmd ("once", no_class, enable_once_command, | |
3882 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3883 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3884 | &enablebreaklist); |
3885 | ||
3886 | add_cmd ("delete", no_class, enable_delete_command, | |
3887 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3888 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3889 | &enablebreaklist); | |
3890 | ||
3891 | add_cmd ("delete", no_class, enable_delete_command, | |
3892 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3893 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3894 | &enablelist); | |
3895 | ||
3896 | add_cmd ("once", no_class, enable_once_command, | |
3897 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3898 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3899 | &enablelist); |
3900 | ||
3901 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
3902 | "Disable some breakpoints.\n\ | |
3903 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3904 | To disable all breakpoints, give no argument.\n\ | |
3905 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
3906 | &disablelist, "disable ", 1, &cmdlist); | |
3907 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
3908 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
3909 | ||
3910 | add_cmd ("breakpoints", class_alias, disable_command, | |
3911 | "Disable some breakpoints.\n\ | |
3912 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3913 | To disable all breakpoints, give no argument.\n\ | |
3914 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
3915 | This command may be abbreviated \"disable\".", | |
3916 | &disablelist); | |
3917 | ||
3918 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
3919 | "Delete some breakpoints or auto-display expressions.\n\ | |
3920 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3921 | To delete all breakpoints, give no argument.\n\ | |
3922 | \n\ | |
3923 | Also a prefix command for deletion of other GDB objects.\n\ | |
3924 | The \"unset\" command is also an alias for \"delete\".", | |
3925 | &deletelist, "delete ", 1, &cmdlist); | |
3926 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
bd5635a1 RP |
3927 | |
3928 | add_cmd ("breakpoints", class_alias, delete_command, | |
3929 | "Delete some breakpoints or auto-display expressions.\n\ | |
3930 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3931 | To delete all breakpoints, give no argument.\n\ | |
3932 | This command may be abbreviated \"delete\".", | |
3933 | &deletelist); | |
3934 | ||
3935 | add_com ("clear", class_breakpoint, clear_command, | |
706dc3ce | 3936 | concat ("Clear breakpoint at specified line or function.\n\ |
bd5635a1 RP |
3937 | Argument may be line number, function name, or \"*\" and an address.\n\ |
3938 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
3939 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
706dc3ce JL |
3940 | If an address is specified, breakpoints at that address are cleared.\n\n", |
3941 | "With no argument, clears all breakpoints in the line that the selected frame\n\ | |
bd5635a1 RP |
3942 | is executing in.\n\ |
3943 | \n\ | |
706dc3ce | 3944 | See also the \"delete\" command which clears breakpoints by number.", NULL)); |
bd5635a1 RP |
3945 | |
3946 | add_com ("break", class_breakpoint, break_command, | |
706dc3ce | 3947 | concat ("Set breakpoint at specified line or function.\n\ |
bd5635a1 RP |
3948 | Argument may be line number, function name, or \"*\" and an address.\n\ |
3949 | If line number is specified, break at start of code for that line.\n\ | |
3950 | If function is specified, break at start of code for that function.\n\ | |
706dc3ce JL |
3951 | If an address is specified, break at that exact address.\n", |
3952 | "With no arg, uses current execution address of selected stack frame.\n\ | |
bd5635a1 RP |
3953 | This is useful for breaking on return to a stack frame.\n\ |
3954 | \n\ | |
3955 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
3956 | \n\ | |
706dc3ce | 3957 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); |
bd5635a1 RP |
3958 | add_com_alias ("b", "break", class_run, 1); |
3959 | add_com_alias ("br", "break", class_run, 1); | |
3960 | add_com_alias ("bre", "break", class_run, 1); | |
3961 | add_com_alias ("brea", "break", class_run, 1); | |
3962 | ||
3963 | add_info ("breakpoints", breakpoints_info, | |
706dc3ce | 3964 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 3965 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
3966 | \tbreakpoint - normal breakpoint\n\ |
3967 | \twatchpoint - watchpoint\n\ | |
80ba48f5 SG |
3968 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
3969 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
3970 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
3971 | address and file/line number respectively.\n\n", |
3972 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
80ba48f5 SG |
3973 | are set to the address of the last breakpoint listed.\n\n\ |
3974 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 3975 | breakpoint set.", NULL)); |
80ba48f5 | 3976 | |
9b280a7f JG |
3977 | #if MAINTENANCE_CMDS |
3978 | ||
3979 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, | |
706dc3ce | 3980 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 3981 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
3982 | \tbreakpoint - normal breakpoint\n\ |
3983 | \twatchpoint - watchpoint\n\ | |
3984 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
3985 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
3986 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
706dc3ce JL |
3987 | \tfinish - internal breakpoint used by the \"finish\" command\n", |
3988 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
80ba48f5 SG |
3989 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
3990 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
3991 | address and file/line number respectively.\n\n", |
3992 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
bd5635a1 RP |
3993 | are set to the address of the last breakpoint listed.\n\n\ |
3994 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 3995 | breakpoint set.", NULL), |
9b280a7f JG |
3996 | &maintenanceinfolist); |
3997 | ||
3998 | #endif /* MAINTENANCE_CMDS */ | |
bd5635a1 RP |
3999 | |
4000 | add_com ("catch", class_breakpoint, catch_command, | |
4001 | "Set breakpoints to catch exceptions that are raised.\n\ | |
4002 | Argument may be a single exception to catch, multiple exceptions\n\ | |
4003 | to catch, or the default exception \"default\". If no arguments\n\ | |
4004 | are given, breakpoints are set at all exception handlers catch clauses\n\ | |
4005 | within the current scope.\n\ | |
4006 | \n\ | |
4007 | A condition specified for the catch applies to all breakpoints set\n\ | |
4008 | with this command\n\ | |
4009 | \n\ | |
4010 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
4011 | ||
4012 | add_com ("watch", class_breakpoint, watch_command, | |
4013 | "Set a watchpoint for an expression.\n\ | |
4014 | A watchpoint stops execution of your program whenever the value of\n\ | |
4015 | an expression changes."); | |
4016 | ||
11054881 KH |
4017 | add_com ("rwatch", class_breakpoint, rwatch_command, |
4018 | "Set a read watchpoint for an expression.\n\ | |
4019 | A watchpoint stops execution of your program whenever the value of\n\ | |
4020 | an expression is read."); | |
4021 | ||
4022 | add_com ("awatch", class_breakpoint, awatch_command, | |
4023 | "Set a watchpoint for an expression.\n\ | |
4024 | A watchpoint stops execution of your program whenever the value of\n\ | |
4025 | an expression is either read or written."); | |
4026 | ||
c8950965 JG |
4027 | add_info ("watchpoints", breakpoints_info, |
4028 | "Synonym for ``info breakpoints''."); | |
9f577285 | 4029 | |
bd5635a1 | 4030 | } |