Commit | Line | Data |
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bd5635a1 | 1 | /* Everything about breakpoints, for GDB. |
2f4973f8 | 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996 |
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 | 18 | along with this program; if not, write to the Free Software |
cd10c7e3 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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" | |
bd5635a1 RP |
31 | #include "command.h" |
32 | #include "inferior.h" | |
fdfa3315 | 33 | #include "gdbthread.h" |
bd5635a1 | 34 | #include "target.h" |
d3b9c0df | 35 | #include "language.h" |
2b576293 | 36 | #include "gdb_string.h" |
423e9664 | 37 | #include "demangle.h" |
9f577285 | 38 | #include "annotate.h" |
bd5635a1 | 39 | |
30875e1c SG |
40 | /* local function prototypes */ |
41 | ||
42 | static void | |
43 | catch_command_1 PARAMS ((char *, int, int)); | |
44 | ||
45 | static void | |
46 | enable_delete_command PARAMS ((char *, int)); | |
47 | ||
48 | static void | |
49 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
50 | ||
51 | static void | |
52 | enable_once_command PARAMS ((char *, int)); | |
53 | ||
54 | static void | |
55 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
56 | ||
57 | static void | |
58 | disable_command PARAMS ((char *, int)); | |
59 | ||
30875e1c SG |
60 | static void |
61 | enable_command PARAMS ((char *, int)); | |
62 | ||
30875e1c SG |
63 | static void |
64 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); | |
65 | ||
66 | static void | |
67 | ignore_command PARAMS ((char *, int)); | |
68 | ||
69 | static int | |
70 | breakpoint_re_set_one PARAMS ((char *)); | |
71 | ||
72 | static void | |
73 | delete_command PARAMS ((char *, int)); | |
74 | ||
75 | static void | |
76 | clear_command PARAMS ((char *, int)); | |
77 | ||
78 | static void | |
79 | catch_command PARAMS ((char *, int)); | |
80 | ||
81 | static struct symtabs_and_lines | |
82 | get_catch_sals PARAMS ((int)); | |
83 | ||
84 | static void | |
85 | watch_command PARAMS ((char *, int)); | |
86 | ||
999dd04b | 87 | static int |
11054881 | 88 | can_use_hardware_watchpoint PARAMS ((struct value *)); |
999dd04b | 89 | |
30875e1c SG |
90 | static void |
91 | tbreak_command PARAMS ((char *, int)); | |
92 | ||
93 | static void | |
94 | break_command_1 PARAMS ((char *, int, int)); | |
95 | ||
96 | static void | |
97 | mention PARAMS ((struct breakpoint *)); | |
98 | ||
99 | static struct breakpoint * | |
100 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); | |
101 | ||
102 | static void | |
103 | check_duplicates PARAMS ((CORE_ADDR)); | |
104 | ||
105 | static void | |
106 | describe_other_breakpoints PARAMS ((CORE_ADDR)); | |
107 | ||
30875e1c SG |
108 | static void |
109 | breakpoints_info PARAMS ((char *, int)); | |
110 | ||
111 | static void | |
423e9664 | 112 | breakpoint_1 PARAMS ((int, int)); |
30875e1c SG |
113 | |
114 | static bpstat | |
115 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); | |
116 | ||
117 | static int | |
118 | breakpoint_cond_eval PARAMS ((char *)); | |
119 | ||
120 | static void | |
121 | cleanup_executing_breakpoints PARAMS ((int)); | |
122 | ||
123 | static void | |
124 | commands_command PARAMS ((char *, int)); | |
125 | ||
126 | static void | |
127 | condition_command PARAMS ((char *, int)); | |
128 | ||
129 | static int | |
130 | get_number PARAMS ((char **)); | |
131 | ||
132 | static void | |
133 | set_breakpoint_count PARAMS ((int)); | |
134 | ||
999dd04b JL |
135 | static int |
136 | remove_breakpoint PARAMS ((struct breakpoint *)); | |
30875e1c | 137 | |
bd5635a1 | 138 | extern int addressprint; /* Print machine addresses? */ |
bd5635a1 | 139 | |
bd5635a1 RP |
140 | /* Are we executing breakpoint commands? */ |
141 | static int executing_breakpoint_commands; | |
142 | ||
cba0d141 JG |
143 | /* Walk the following statement or block through all breakpoints. |
144 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
145 | breakpoint. */ | |
146 | ||
bd5635a1 RP |
147 | #define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) |
148 | ||
cba0d141 JG |
149 | #define ALL_BREAKPOINTS_SAFE(b,tmp) \ |
150 | for (b = breakpoint_chain; \ | |
151 | b? (tmp=b->next, 1): 0; \ | |
152 | b = tmp) | |
153 | ||
9f577285 SS |
154 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
155 | ||
156 | int show_breakpoint_hit_counts = 1; | |
157 | ||
bd5635a1 RP |
158 | /* Chain of all breakpoints defined. */ |
159 | ||
e8bf33c4 | 160 | struct breakpoint *breakpoint_chain; |
bd5635a1 RP |
161 | |
162 | /* Number of last breakpoint made. */ | |
163 | ||
164 | static int breakpoint_count; | |
165 | ||
166 | /* Set breakpoint count to NUM. */ | |
9f577285 | 167 | |
bd5635a1 RP |
168 | static void |
169 | set_breakpoint_count (num) | |
170 | int num; | |
171 | { | |
172 | breakpoint_count = num; | |
173 | set_internalvar (lookup_internalvar ("bpnum"), | |
06b6c733 | 174 | value_from_longest (builtin_type_int, (LONGEST) num)); |
bd5635a1 RP |
175 | } |
176 | ||
9f577285 SS |
177 | /* Used in run_command to zero the hit count when a new run starts. */ |
178 | ||
179 | void | |
180 | clear_breakpoint_hit_counts () | |
181 | { | |
182 | struct breakpoint *b; | |
183 | ||
184 | ALL_BREAKPOINTS (b) | |
185 | b->hit_count = 0; | |
186 | } | |
187 | ||
bd5635a1 RP |
188 | /* Default address, symtab and line to put a breakpoint at |
189 | for "break" command with no arg. | |
190 | if default_breakpoint_valid is zero, the other three are | |
191 | not valid, and "break" with no arg is an error. | |
192 | ||
193 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
194 | ||
195 | int default_breakpoint_valid; | |
196 | CORE_ADDR default_breakpoint_address; | |
197 | struct symtab *default_breakpoint_symtab; | |
198 | int default_breakpoint_line; | |
bd5635a1 RP |
199 | \f |
200 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
201 | Advance *PP after the string and any trailing whitespace. | |
202 | ||
203 | Currently the string can either be a number or "$" followed by the name | |
204 | of a convenience variable. Making it an expression wouldn't work well | |
205 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
206 | static int | |
207 | get_number (pp) | |
208 | char **pp; | |
209 | { | |
210 | int retval; | |
211 | char *p = *pp; | |
212 | ||
213 | if (p == NULL) | |
214 | /* Empty line means refer to the last breakpoint. */ | |
215 | return breakpoint_count; | |
216 | else if (*p == '$') | |
217 | { | |
218 | /* Make a copy of the name, so we can null-terminate it | |
219 | to pass to lookup_internalvar(). */ | |
220 | char *varname; | |
221 | char *start = ++p; | |
82a2edfb | 222 | value_ptr val; |
bd5635a1 RP |
223 | |
224 | while (isalnum (*p) || *p == '_') | |
225 | p++; | |
226 | varname = (char *) alloca (p - start + 1); | |
227 | strncpy (varname, start, p - start); | |
228 | varname[p - start] = '\0'; | |
229 | val = value_of_internalvar (lookup_internalvar (varname)); | |
230 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
231 | error ( | |
232 | "Convenience variables used to specify breakpoints must have integer values." | |
233 | ); | |
234 | retval = (int) value_as_long (val); | |
235 | } | |
236 | else | |
237 | { | |
80ba48f5 SG |
238 | if (*p == '-') |
239 | ++p; | |
bd5635a1 RP |
240 | while (*p >= '0' && *p <= '9') |
241 | ++p; | |
242 | if (p == *pp) | |
243 | /* There is no number here. (e.g. "cond a == b"). */ | |
244 | error_no_arg ("breakpoint number"); | |
245 | retval = atoi (*pp); | |
246 | } | |
247 | if (!(isspace (*p) || *p == '\0')) | |
248 | error ("breakpoint number expected"); | |
249 | while (isspace (*p)) | |
250 | p++; | |
251 | *pp = p; | |
252 | return retval; | |
253 | } | |
254 | \f | |
255 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
256 | ||
257 | static void | |
258 | condition_command (arg, from_tty) | |
259 | char *arg; | |
260 | int from_tty; | |
261 | { | |
262 | register struct breakpoint *b; | |
263 | char *p; | |
264 | register int bnum; | |
265 | ||
266 | if (arg == 0) | |
267 | error_no_arg ("breakpoint number"); | |
268 | ||
269 | p = arg; | |
270 | bnum = get_number (&p); | |
271 | ||
272 | ALL_BREAKPOINTS (b) | |
273 | if (b->number == bnum) | |
274 | { | |
275 | if (b->cond) | |
276 | { | |
c8950965 | 277 | free ((PTR)b->cond); |
bd5635a1 RP |
278 | b->cond = 0; |
279 | } | |
280 | if (b->cond_string != NULL) | |
c8950965 | 281 | free ((PTR)b->cond_string); |
bd5635a1 RP |
282 | |
283 | if (*p == 0) | |
284 | { | |
285 | b->cond = 0; | |
286 | b->cond_string = NULL; | |
287 | if (from_tty) | |
423e9664 | 288 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); |
bd5635a1 RP |
289 | } |
290 | else | |
291 | { | |
292 | arg = p; | |
293 | /* I don't know if it matters whether this is the string the user | |
294 | typed in or the decompiled expression. */ | |
295 | b->cond_string = savestring (arg, strlen (arg)); | |
d3b9c0df | 296 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); |
bd5635a1 RP |
297 | if (*arg) |
298 | error ("Junk at end of expression"); | |
299 | } | |
16726dd1 | 300 | breakpoints_changed (); |
bd5635a1 RP |
301 | return; |
302 | } | |
303 | ||
304 | error ("No breakpoint number %d.", bnum); | |
305 | } | |
306 | ||
bdbd5f50 | 307 | /* ARGSUSED */ |
bd5635a1 RP |
308 | static void |
309 | commands_command (arg, from_tty) | |
310 | char *arg; | |
311 | int from_tty; | |
312 | { | |
313 | register struct breakpoint *b; | |
314 | char *p; | |
315 | register int bnum; | |
316 | struct command_line *l; | |
317 | ||
318 | /* If we allowed this, we would have problems with when to | |
319 | free the storage, if we change the commands currently | |
320 | being read from. */ | |
321 | ||
322 | if (executing_breakpoint_commands) | |
323 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
324 | ||
325 | p = arg; | |
326 | bnum = get_number (&p); | |
327 | if (p && *p) | |
328 | error ("Unexpected extra arguments following breakpoint number."); | |
329 | ||
330 | ALL_BREAKPOINTS (b) | |
331 | if (b->number == bnum) | |
332 | { | |
41756e56 FF |
333 | char tmpbuf[128]; |
334 | sprintf (tmpbuf, "Type commands for when breakpoint %d is hit, one per line.", bnum); | |
335 | l = read_command_lines (tmpbuf, from_tty); | |
bd5635a1 RP |
336 | free_command_lines (&b->commands); |
337 | b->commands = l; | |
6c803036 | 338 | breakpoints_changed (); |
bd5635a1 RP |
339 | return; |
340 | } | |
341 | error ("No breakpoint number %d.", bnum); | |
342 | } | |
343 | \f | |
31ef19fc JK |
344 | extern int memory_breakpoint_size; /* from mem-break.c */ |
345 | ||
346 | /* Like target_read_memory() but if breakpoints are inserted, return | |
30875e1c SG |
347 | the shadow contents instead of the breakpoints themselves. |
348 | ||
349 | Read "memory data" from whatever target or inferior we have. | |
350 | Returns zero if successful, errno value if not. EIO is used | |
351 | for address out of bounds. If breakpoints are inserted, returns | |
352 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
353 | ||
31ef19fc JK |
354 | int |
355 | read_memory_nobpt (memaddr, myaddr, len) | |
356 | CORE_ADDR memaddr; | |
357 | char *myaddr; | |
358 | unsigned len; | |
359 | { | |
360 | int status; | |
361 | struct breakpoint *b; | |
362 | ||
363 | if (memory_breakpoint_size < 0) | |
5af4f5f6 JK |
364 | /* No breakpoints on this machine. FIXME: This should be |
365 | dependent on the debugging target. Probably want | |
366 | target_insert_breakpoint to return a size, saying how many | |
367 | bytes of the shadow contents are used, or perhaps have | |
368 | something like target_xfer_shadow. */ | |
31ef19fc JK |
369 | return target_read_memory (memaddr, myaddr, len); |
370 | ||
371 | ALL_BREAKPOINTS (b) | |
372 | { | |
999dd04b JL |
373 | if (b->type == bp_watchpoint |
374 | || b->type == bp_hardware_watchpoint | |
11054881 KH |
375 | || b->type == bp_read_watchpoint |
376 | || b->type == bp_access_watchpoint | |
999dd04b | 377 | || !b->inserted) |
31ef19fc JK |
378 | continue; |
379 | else if (b->address + memory_breakpoint_size <= memaddr) | |
380 | /* The breakpoint is entirely before the chunk of memory | |
381 | we are reading. */ | |
382 | continue; | |
383 | else if (b->address >= memaddr + len) | |
384 | /* The breakpoint is entirely after the chunk of memory we | |
385 | are reading. */ | |
386 | continue; | |
387 | else | |
388 | { | |
389 | /* Copy the breakpoint from the shadow contents, and recurse | |
390 | for the things before and after. */ | |
391 | ||
392 | /* Addresses and length of the part of the breakpoint that | |
393 | we need to copy. */ | |
394 | CORE_ADDR membpt = b->address; | |
395 | unsigned int bptlen = memory_breakpoint_size; | |
396 | /* Offset within shadow_contents. */ | |
397 | int bptoffset = 0; | |
398 | ||
399 | if (membpt < memaddr) | |
400 | { | |
401 | /* Only copy the second part of the breakpoint. */ | |
402 | bptlen -= memaddr - membpt; | |
403 | bptoffset = memaddr - membpt; | |
404 | membpt = memaddr; | |
405 | } | |
406 | ||
407 | if (membpt + bptlen > memaddr + len) | |
408 | { | |
409 | /* Only copy the first part of the breakpoint. */ | |
410 | bptlen -= (membpt + bptlen) - (memaddr + len); | |
411 | } | |
412 | ||
4ed3a9ea FF |
413 | memcpy (myaddr + membpt - memaddr, |
414 | b->shadow_contents + bptoffset, bptlen); | |
31ef19fc JK |
415 | |
416 | if (membpt > memaddr) | |
417 | { | |
418 | /* Copy the section of memory before the breakpoint. */ | |
419 | status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr); | |
420 | if (status != 0) | |
421 | return status; | |
422 | } | |
423 | ||
424 | if (membpt + bptlen < memaddr + len) | |
425 | { | |
426 | /* Copy the section of memory after the breakpoint. */ | |
427 | status = read_memory_nobpt | |
428 | (membpt + bptlen, | |
429 | myaddr + membpt + bptlen - memaddr, | |
430 | memaddr + len - (membpt + bptlen)); | |
431 | if (status != 0) | |
432 | return status; | |
433 | } | |
434 | return 0; | |
435 | } | |
436 | } | |
437 | /* Nothing overlaps. Just call read_memory_noerr. */ | |
438 | return target_read_memory (memaddr, myaddr, len); | |
439 | } | |
440 | \f | |
bd5635a1 RP |
441 | /* insert_breakpoints is used when starting or continuing the program. |
442 | remove_breakpoints is used when the program stops. | |
443 | Both return zero if successful, | |
444 | or an `errno' value if could not write the inferior. */ | |
445 | ||
446 | int | |
447 | insert_breakpoints () | |
448 | { | |
fa3764e2 | 449 | register struct breakpoint *b, *temp; |
bd5635a1 RP |
450 | int val = 0; |
451 | int disabled_breaks = 0; | |
452 | ||
fa3764e2 | 453 | ALL_BREAKPOINTS_SAFE (b, temp) |
30875e1c | 454 | if (b->type != bp_watchpoint |
999dd04b | 455 | && b->type != bp_hardware_watchpoint |
11054881 KH |
456 | && b->type != bp_read_watchpoint |
457 | && b->type != bp_access_watchpoint | |
bd5635a1 | 458 | && b->enable != disabled |
fa3764e2 | 459 | && b->enable != shlib_disabled |
bd5635a1 RP |
460 | && ! b->inserted |
461 | && ! b->duplicate) | |
462 | { | |
11054881 KH |
463 | if (b->type == bp_hardware_breakpoint) |
464 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
465 | else | |
466 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
bd5635a1 RP |
467 | if (val) |
468 | { | |
469 | /* Can't set the breakpoint. */ | |
470 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
471 | if (DISABLE_UNSETTABLE_BREAK (b->address)) | |
472 | { | |
473 | val = 0; | |
fa3764e2 | 474 | b->enable = shlib_disabled; |
bd5635a1 RP |
475 | if (!disabled_breaks) |
476 | { | |
05052b63 | 477 | target_terminal_ours_for_output (); |
199b2450 | 478 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 479 | "Cannot insert breakpoint %d:\n", b->number); |
fa3764e2 | 480 | printf_filtered ("Temporarily disabling shared library breakpoints:\n"); |
bd5635a1 RP |
481 | } |
482 | disabled_breaks = 1; | |
483 | printf_filtered ("%d ", b->number); | |
484 | } | |
485 | else | |
486 | #endif | |
487 | { | |
05052b63 | 488 | target_terminal_ours_for_output (); |
199b2450 | 489 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
d3b9c0df | 490 | #ifdef ONE_PROCESS_WRITETEXT |
199b2450 | 491 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 492 | "The same program may be running in another process.\n"); |
d3b9c0df | 493 | #endif |
bd5635a1 RP |
494 | memory_error (val, b->address); /* which bombs us out */ |
495 | } | |
496 | } | |
497 | else | |
498 | b->inserted = 1; | |
499 | } | |
11054881 KH |
500 | else if ((b->type == bp_hardware_watchpoint || |
501 | b->type == bp_read_watchpoint || | |
502 | b->type == bp_access_watchpoint) | |
999dd04b JL |
503 | && b->enable == enabled |
504 | && ! b->inserted | |
505 | && ! b->duplicate) | |
506 | { | |
706dc3ce | 507 | struct frame_info *saved_frame; |
999dd04b JL |
508 | int saved_level, within_current_scope; |
509 | value_ptr mark = value_mark (); | |
510 | value_ptr v; | |
511 | ||
512 | /* Save the current frame and level so we can restore it after | |
513 | evaluating the watchpoint expression on its own frame. */ | |
514 | saved_frame = selected_frame; | |
515 | saved_level = selected_frame_level; | |
516 | ||
517 | /* Determine if the watchpoint is within scope. */ | |
518 | if (b->exp_valid_block == NULL) | |
519 | within_current_scope = 1; | |
520 | else | |
521 | { | |
706dc3ce JL |
522 | struct frame_info *fi = |
523 | find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
524 | within_current_scope = (fi != NULL); | |
999dd04b | 525 | if (within_current_scope) |
706dc3ce | 526 | select_frame (fi, -1); |
999dd04b JL |
527 | } |
528 | ||
529 | if (within_current_scope) | |
530 | { | |
531 | /* Evaluate the expression and cut the chain of values | |
532 | produced off from the value chain. */ | |
533 | v = evaluate_expression (b->exp); | |
534 | value_release_to_mark (mark); | |
535 | ||
536 | b->val_chain = v; | |
537 | b->inserted = 1; | |
538 | ||
539 | /* Look at each value on the value chain. */ | |
540 | for ( ; v; v=v->next) | |
541 | { | |
542 | /* If it's a memory location, then we must watch it. */ | |
543 | if (v->lval == lval_memory) | |
544 | { | |
11054881 | 545 | int addr, len, type; |
999dd04b JL |
546 | |
547 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
548 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 KH |
549 | type = 0; |
550 | if (b->type == bp_read_watchpoint) | |
551 | type = 1; | |
552 | else if (b->type == bp_access_watchpoint) | |
553 | type = 2; | |
554 | ||
555 | val = target_insert_watchpoint (addr, len, type); | |
999dd04b JL |
556 | if (val == -1) |
557 | { | |
558 | b->inserted = 0; | |
559 | break; | |
560 | } | |
561 | val = 0; | |
562 | } | |
563 | } | |
564 | /* Failure to insert a watchpoint on any memory value in the | |
565 | value chain brings us here. */ | |
566 | if (!b->inserted) | |
567 | warning ("Hardware watchpoint %d: Could not insert watchpoint\n", | |
568 | b->number); | |
569 | } | |
570 | else | |
571 | { | |
572 | printf_filtered ("\ | |
573 | Hardware watchpoint %d deleted because the program has left the block in\n\ | |
574 | which its expression is valid.\n", b->number); | |
575 | if (b->related_breakpoint) | |
e51481f9 JL |
576 | { |
577 | b->related_breakpoint->enable = disable; | |
578 | b->related_breakpoint->disposition = del_at_next_stop; | |
579 | } | |
580 | b->enable = disable; | |
581 | b->disposition = del_at_next_stop; | |
999dd04b JL |
582 | } |
583 | ||
584 | /* Restore the frame and level. */ | |
585 | select_frame (saved_frame, saved_level); | |
586 | } | |
bd5635a1 RP |
587 | if (disabled_breaks) |
588 | printf_filtered ("\n"); | |
589 | return val; | |
590 | } | |
591 | ||
999dd04b | 592 | |
bd5635a1 RP |
593 | int |
594 | remove_breakpoints () | |
595 | { | |
596 | register struct breakpoint *b; | |
597 | int val; | |
598 | ||
bd5635a1 | 599 | ALL_BREAKPOINTS (b) |
999dd04b JL |
600 | { |
601 | if (b->inserted) | |
602 | { | |
603 | val = remove_breakpoint (b); | |
604 | if (val != 0) | |
605 | return val; | |
606 | } | |
607 | } | |
608 | return 0; | |
609 | } | |
bd5635a1 | 610 | |
999dd04b JL |
611 | |
612 | static int | |
613 | remove_breakpoint (b) | |
614 | struct breakpoint *b; | |
615 | { | |
616 | int val; | |
617 | ||
618 | if (b->type != bp_watchpoint | |
11054881 KH |
619 | && b->type != bp_hardware_watchpoint |
620 | && b->type != bp_read_watchpoint | |
621 | && b->type != bp_access_watchpoint) | |
999dd04b | 622 | { |
11054881 KH |
623 | if (b->type == bp_hardware_breakpoint) |
624 | val = target_remove_hw_breakpoint(b->address, b->shadow_contents); | |
625 | else | |
626 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
999dd04b JL |
627 | if (val) |
628 | return val; | |
629 | b->inserted = 0; | |
630 | } | |
11054881 KH |
631 | else if ((b->type == bp_hardware_watchpoint || |
632 | b->type == bp_read_watchpoint || | |
633 | b->type == bp_access_watchpoint) | |
999dd04b JL |
634 | && b->enable == enabled |
635 | && ! b->duplicate) | |
636 | { | |
637 | value_ptr v, n; | |
638 | ||
639 | b->inserted = 0; | |
640 | /* Walk down the saved value chain. */ | |
641 | for (v = b->val_chain; v; v = v->next) | |
642 | { | |
643 | /* For each memory reference remove the watchpoint | |
644 | at that address. */ | |
645 | if (v->lval == lval_memory) | |
646 | { | |
647 | int addr, len; | |
648 | ||
649 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
650 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 | 651 | val = target_remove_watchpoint (addr, len, b->type); |
999dd04b JL |
652 | if (val == -1) |
653 | b->inserted = 1; | |
654 | val = 0; | |
655 | } | |
656 | } | |
657 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
658 | if (b->inserted) | |
0fe1522a SG |
659 | warning ("Hardware watchpoint %d: Could not remove watchpoint\n", |
660 | b->number); | |
999dd04b JL |
661 | |
662 | /* Free the saved value chain. We will construct a new one | |
663 | the next time the watchpoint is inserted. */ | |
664 | for (v = b->val_chain; v; v = n) | |
665 | { | |
666 | n = v->next; | |
667 | value_free (v); | |
668 | } | |
669 | b->val_chain = NULL; | |
670 | } | |
bd5635a1 RP |
671 | return 0; |
672 | } | |
673 | ||
cf3e377e | 674 | /* Clear the "inserted" flag in all breakpoints. */ |
bd5635a1 RP |
675 | |
676 | void | |
677 | mark_breakpoints_out () | |
678 | { | |
679 | register struct breakpoint *b; | |
680 | ||
681 | ALL_BREAKPOINTS (b) | |
682 | b->inserted = 0; | |
683 | } | |
684 | ||
cf3e377e JK |
685 | /* Clear the "inserted" flag in all breakpoints and delete any breakpoints |
686 | which should go away between runs of the program. */ | |
687 | ||
688 | void | |
689 | breakpoint_init_inferior () | |
690 | { | |
691 | register struct breakpoint *b, *temp; | |
692 | ||
693 | ALL_BREAKPOINTS_SAFE (b, temp) | |
694 | { | |
695 | b->inserted = 0; | |
696 | ||
e51481f9 JL |
697 | switch (b->type) |
698 | { | |
699 | case bp_call_dummy: | |
700 | case bp_watchpoint_scope: | |
999dd04b | 701 | |
e51481f9 JL |
702 | /* If the call dummy breakpoint is at the entry point it will |
703 | cause problems when the inferior is rerun, so we better | |
704 | get rid of it. | |
999dd04b | 705 | |
e51481f9 JL |
706 | Also get rid of scope breakpoints. */ |
707 | delete_breakpoint (b); | |
708 | break; | |
709 | ||
710 | case bp_watchpoint: | |
711 | case bp_hardware_watchpoint: | |
712 | case bp_read_watchpoint: | |
713 | case bp_access_watchpoint: | |
714 | ||
715 | /* Likewise for watchpoints on local expressions. */ | |
716 | if (b->exp_valid_block != NULL) | |
717 | delete_breakpoint (b); | |
718 | break; | |
719 | ||
720 | default: | |
721 | break; | |
722 | } | |
cf3e377e JK |
723 | } |
724 | } | |
725 | ||
bd5635a1 RP |
726 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. |
727 | When continuing from a location with a breakpoint, | |
728 | we actually single step once before calling insert_breakpoints. */ | |
729 | ||
730 | int | |
731 | breakpoint_here_p (pc) | |
732 | CORE_ADDR pc; | |
733 | { | |
734 | register struct breakpoint *b; | |
735 | ||
736 | ALL_BREAKPOINTS (b) | |
fa3764e2 JL |
737 | if (b->enable != disabled |
738 | && b->enable != shlib_disabled | |
739 | && b->address == pc) | |
bd5635a1 RP |
740 | return 1; |
741 | ||
742 | return 0; | |
743 | } | |
199b2450 | 744 | |
05052b63 JK |
745 | /* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY |
746 | because figuring out the saved SP would take too much time, at least using | |
747 | get_saved_register on the 68k. This means that for this function to | |
748 | work right a port must use the bp_call_dummy breakpoint. */ | |
749 | ||
750 | int | |
751 | frame_in_dummy (frame) | |
706dc3ce | 752 | struct frame_info *frame; |
05052b63 JK |
753 | { |
754 | struct breakpoint *b; | |
755 | ||
d7e7e851 | 756 | #ifdef CALL_DUMMY |
05052b63 JK |
757 | ALL_BREAKPOINTS (b) |
758 | { | |
d7e7e851 JK |
759 | static unsigned LONGEST dummy[] = CALL_DUMMY; |
760 | ||
05052b63 | 761 | if (b->type == bp_call_dummy |
d7e7e851 JK |
762 | && b->frame == frame->frame |
763 | ||
764 | /* We need to check the PC as well as the frame on the sparc, | |
765 | for signals.exp in the testsuite. */ | |
766 | && (frame->pc | |
767 | >= (b->address | |
768 | - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE)) | |
769 | && frame->pc <= b->address) | |
05052b63 JK |
770 | return 1; |
771 | } | |
d7e7e851 | 772 | #endif /* CALL_DUMMY */ |
05052b63 JK |
773 | return 0; |
774 | } | |
775 | ||
199b2450 TL |
776 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC |
777 | is valid for process/thread PID. */ | |
778 | ||
779 | int | |
780 | breakpoint_thread_match (pc, pid) | |
781 | CORE_ADDR pc; | |
782 | int pid; | |
783 | { | |
784 | struct breakpoint *b; | |
785 | int thread; | |
786 | ||
787 | thread = pid_to_thread_id (pid); | |
788 | ||
789 | ALL_BREAKPOINTS (b) | |
790 | if (b->enable != disabled | |
fa3764e2 | 791 | && b->enable != shlib_disabled |
199b2450 TL |
792 | && b->address == pc |
793 | && (b->thread == -1 || b->thread == thread)) | |
794 | return 1; | |
795 | ||
796 | return 0; | |
797 | } | |
798 | ||
bd5635a1 RP |
799 | \f |
800 | /* bpstat stuff. External routines' interfaces are documented | |
801 | in breakpoint.h. */ | |
30875e1c SG |
802 | |
803 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
804 | Also free any storage that is part of a bpstat. */ | |
805 | ||
bd5635a1 RP |
806 | void |
807 | bpstat_clear (bsp) | |
808 | bpstat *bsp; | |
809 | { | |
810 | bpstat p; | |
811 | bpstat q; | |
812 | ||
813 | if (bsp == 0) | |
814 | return; | |
815 | p = *bsp; | |
816 | while (p != NULL) | |
817 | { | |
818 | q = p->next; | |
819 | if (p->old_val != NULL) | |
820 | value_free (p->old_val); | |
c8950965 | 821 | free ((PTR)p); |
bd5635a1 RP |
822 | p = q; |
823 | } | |
824 | *bsp = NULL; | |
825 | } | |
826 | ||
30875e1c SG |
827 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
828 | is part of the bpstat is copied as well. */ | |
829 | ||
bd5635a1 RP |
830 | bpstat |
831 | bpstat_copy (bs) | |
832 | bpstat bs; | |
833 | { | |
834 | bpstat p = NULL; | |
835 | bpstat tmp; | |
fee933f1 | 836 | bpstat retval = NULL; |
bd5635a1 RP |
837 | |
838 | if (bs == NULL) | |
839 | return bs; | |
840 | ||
841 | for (; bs != NULL; bs = bs->next) | |
842 | { | |
843 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4ed3a9ea | 844 | memcpy (tmp, bs, sizeof (*tmp)); |
bd5635a1 RP |
845 | if (p == NULL) |
846 | /* This is the first thing in the chain. */ | |
847 | retval = tmp; | |
848 | else | |
849 | p->next = tmp; | |
850 | p = tmp; | |
851 | } | |
852 | p->next = NULL; | |
853 | return retval; | |
854 | } | |
855 | ||
30875e1c SG |
856 | /* Find the bpstat associated with this breakpoint */ |
857 | ||
858 | bpstat | |
859 | bpstat_find_breakpoint(bsp, breakpoint) | |
860 | bpstat bsp; | |
861 | struct breakpoint *breakpoint; | |
862 | { | |
863 | if (bsp == NULL) return NULL; | |
864 | ||
865 | for (;bsp != NULL; bsp = bsp->next) { | |
866 | if (bsp->breakpoint_at == breakpoint) return bsp; | |
867 | } | |
868 | return NULL; | |
869 | } | |
870 | ||
871 | /* Return the breakpoint number of the first breakpoint we are stopped | |
872 | at. *BSP upon return is a bpstat which points to the remaining | |
873 | breakpoints stopped at (but which is not guaranteed to be good for | |
874 | anything but further calls to bpstat_num). | |
875 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
876 | ||
bd5635a1 RP |
877 | int |
878 | bpstat_num (bsp) | |
879 | bpstat *bsp; | |
880 | { | |
881 | struct breakpoint *b; | |
882 | ||
883 | if ((*bsp) == NULL) | |
884 | return 0; /* No more breakpoint values */ | |
885 | else | |
886 | { | |
887 | b = (*bsp)->breakpoint_at; | |
888 | *bsp = (*bsp)->next; | |
889 | if (b == NULL) | |
890 | return -1; /* breakpoint that's been deleted since */ | |
891 | else | |
892 | return b->number; /* We have its number */ | |
893 | } | |
894 | } | |
895 | ||
30875e1c SG |
896 | /* Modify BS so that the actions will not be performed. */ |
897 | ||
bd5635a1 RP |
898 | void |
899 | bpstat_clear_actions (bs) | |
900 | bpstat bs; | |
901 | { | |
902 | for (; bs != NULL; bs = bs->next) | |
903 | { | |
904 | bs->commands = NULL; | |
905 | if (bs->old_val != NULL) | |
906 | { | |
907 | value_free (bs->old_val); | |
908 | bs->old_val = NULL; | |
909 | } | |
910 | } | |
911 | } | |
912 | ||
bdbd5f50 JG |
913 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
914 | /* ARGSUSED */ | |
915 | static void | |
916 | cleanup_executing_breakpoints (ignore) | |
917 | int ignore; | |
918 | { | |
919 | executing_breakpoint_commands = 0; | |
920 | } | |
921 | ||
bd5635a1 RP |
922 | /* Execute all the commands associated with all the breakpoints at this |
923 | location. Any of these commands could cause the process to proceed | |
924 | beyond this point, etc. We look out for such changes by checking | |
925 | the global "breakpoint_proceeded" after each command. */ | |
30875e1c | 926 | |
bd5635a1 RP |
927 | void |
928 | bpstat_do_actions (bsp) | |
929 | bpstat *bsp; | |
930 | { | |
931 | bpstat bs; | |
bdbd5f50 | 932 | struct cleanup *old_chain; |
e8bf33c4 | 933 | struct command_line *cmd; |
bdbd5f50 JG |
934 | |
935 | executing_breakpoint_commands = 1; | |
936 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
bd5635a1 RP |
937 | |
938 | top: | |
939 | bs = *bsp; | |
940 | ||
bd5635a1 RP |
941 | breakpoint_proceeded = 0; |
942 | for (; bs != NULL; bs = bs->next) | |
943 | { | |
e8bf33c4 JK |
944 | cmd = bs->commands; |
945 | while (cmd != NULL) | |
bd5635a1 | 946 | { |
0f8cdd9b | 947 | execute_control_command (cmd); |
e8bf33c4 | 948 | cmd = cmd->next; |
bd5635a1 | 949 | } |
e8bf33c4 JK |
950 | if (breakpoint_proceeded) |
951 | /* The inferior is proceeded by the command; bomb out now. | |
952 | The bpstat chain has been blown away by wait_for_inferior. | |
953 | But since execution has stopped again, there is a new bpstat | |
954 | to look at, so start over. */ | |
955 | goto top; | |
956 | else | |
957 | bs->commands = NULL; | |
bd5635a1 | 958 | } |
bd5635a1 RP |
959 | |
960 | executing_breakpoint_commands = 0; | |
bdbd5f50 | 961 | discard_cleanups (old_chain); |
bd5635a1 RP |
962 | } |
963 | ||
8af68e4e JK |
964 | /* This is the normal print_it function for a bpstat. In the future, |
965 | much of this logic could (should?) be moved to bpstat_stop_status, | |
966 | by having it set different print_it functions. */ | |
30875e1c | 967 | |
8af68e4e JK |
968 | static int |
969 | print_it_normal (bs) | |
bd5635a1 RP |
970 | bpstat bs; |
971 | { | |
972 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
973 | which has since been deleted. */ | |
8af68e4e | 974 | if (bs->breakpoint_at == NULL |
30875e1c | 975 | || (bs->breakpoint_at->type != bp_breakpoint |
11054881 | 976 | && bs->breakpoint_at->type != bp_hardware_breakpoint |
999dd04b | 977 | && bs->breakpoint_at->type != bp_watchpoint |
11054881 KH |
978 | && bs->breakpoint_at->type != bp_read_watchpoint |
979 | && bs->breakpoint_at->type != bp_access_watchpoint | |
999dd04b | 980 | && bs->breakpoint_at->type != bp_hardware_watchpoint)) |
bd5635a1 | 981 | return 0; |
bd5635a1 | 982 | |
11054881 KH |
983 | if (bs->breakpoint_at->type == bp_breakpoint || |
984 | bs->breakpoint_at->type == bp_hardware_breakpoint) | |
bd5635a1 RP |
985 | { |
986 | /* I think the user probably only wants to see one breakpoint | |
987 | number, not all of them. */ | |
f2d9c058 | 988 | annotate_breakpoint (bs->breakpoint_at->number); |
bd5635a1 RP |
989 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); |
990 | return 0; | |
991 | } | |
11054881 KH |
992 | else if ((bs->old_val != NULL) && |
993 | (bs->breakpoint_at->type == bp_watchpoint || | |
994 | bs->breakpoint_at->type == bp_access_watchpoint || | |
995 | bs->breakpoint_at->type == bp_hardware_watchpoint)) | |
bd5635a1 | 996 | { |
f2d9c058 | 997 | annotate_watchpoint (bs->breakpoint_at->number); |
11054881 | 998 | mention (bs->breakpoint_at); |
bd5635a1 | 999 | printf_filtered ("\nOld value = "); |
199b2450 | 1000 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); |
bd5635a1 | 1001 | printf_filtered ("\nNew value = "); |
199b2450 | 1002 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
bd5635a1 RP |
1003 | Val_pretty_default); |
1004 | printf_filtered ("\n"); | |
1005 | value_free (bs->old_val); | |
1006 | bs->old_val = NULL; | |
bd2f0c85 JL |
1007 | /* More than one watchpoint may have been triggered. */ |
1008 | return -1; | |
bd5635a1 | 1009 | } |
11054881 KH |
1010 | else if (bs->breakpoint_at->type == bp_access_watchpoint || |
1011 | bs->breakpoint_at->type == bp_read_watchpoint) | |
1012 | { | |
1013 | mention (bs->breakpoint_at); | |
1014 | printf_filtered ("\nValue = "); | |
1015 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
1016 | Val_pretty_default); | |
1017 | printf_filtered ("\n"); | |
1018 | return -1; | |
1019 | } | |
8af68e4e JK |
1020 | /* We can't deal with it. Maybe another member of the bpstat chain can. */ |
1021 | return -1; | |
1022 | } | |
1023 | ||
1024 | /* Print a message indicating what happened. Returns nonzero to | |
1025 | say that only the source line should be printed after this (zero | |
1026 | return means print the frame as well as the source line). */ | |
3f031adf | 1027 | /* Currently we always return zero. */ |
8af68e4e JK |
1028 | int |
1029 | bpstat_print (bs) | |
1030 | bpstat bs; | |
1031 | { | |
1032 | int val; | |
1033 | ||
1034 | if (bs == NULL) | |
1035 | return 0; | |
bd5635a1 | 1036 | |
8af68e4e JK |
1037 | val = (*bs->print_it) (bs); |
1038 | if (val >= 0) | |
1039 | return val; | |
1040 | ||
fcb887ff JK |
1041 | /* Maybe another breakpoint in the chain caused us to stop. |
1042 | (Currently all watchpoints go on the bpstat whether hit or | |
1043 | not. That probably could (should) be changed, provided care is taken | |
1044 | with respect to bpstat_explains_signal). */ | |
1045 | if (bs->next) | |
1046 | return bpstat_print (bs->next); | |
1047 | ||
cabd4da6 | 1048 | /* We reached the end of the chain without printing anything. */ |
bd5635a1 RP |
1049 | return 0; |
1050 | } | |
1051 | ||
1052 | /* Evaluate the expression EXP and return 1 if value is zero. | |
1053 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
bdbd5f50 | 1054 | The argument is a "struct expression *" that has been cast to char * to |
bd5635a1 RP |
1055 | make it pass through catch_errors. */ |
1056 | ||
1057 | static int | |
1058 | breakpoint_cond_eval (exp) | |
bdbd5f50 | 1059 | char *exp; |
bd5635a1 | 1060 | { |
11054881 KH |
1061 | value_ptr mark = value_mark (); |
1062 | int i = !value_true (evaluate_expression ((struct expression *)exp)); | |
1063 | value_free_to_mark (mark); | |
1064 | return i; | |
bd5635a1 RP |
1065 | } |
1066 | ||
1067 | /* Allocate a new bpstat and chain it to the current one. */ | |
1068 | ||
1069 | static bpstat | |
1070 | bpstat_alloc (b, cbs) | |
1071 | register struct breakpoint *b; | |
1072 | bpstat cbs; /* Current "bs" value */ | |
1073 | { | |
1074 | bpstat bs; | |
1075 | ||
1076 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
1077 | cbs->next = bs; | |
1078 | bs->breakpoint_at = b; | |
1079 | /* If the condition is false, etc., don't do the commands. */ | |
1080 | bs->commands = NULL; | |
bd5635a1 | 1081 | bs->old_val = NULL; |
8af68e4e | 1082 | bs->print_it = print_it_normal; |
bd5635a1 RP |
1083 | return bs; |
1084 | } | |
fa99ebe1 | 1085 | \f |
8af68e4e JK |
1086 | /* Possible return values for watchpoint_check (this can't be an enum |
1087 | because of check_errors). */ | |
999dd04b JL |
1088 | /* The watchpoint has been deleted. */ |
1089 | #define WP_DELETED 1 | |
8af68e4e JK |
1090 | /* The value has changed. */ |
1091 | #define WP_VALUE_CHANGED 2 | |
1092 | /* The value has not changed. */ | |
1093 | #define WP_VALUE_NOT_CHANGED 3 | |
1094 | ||
e8bf33c4 JK |
1095 | #define BP_TEMPFLAG 1 |
1096 | #define BP_HARDWAREFLAG 2 | |
1097 | ||
8af68e4e | 1098 | /* Check watchpoint condition. */ |
557f3a0e | 1099 | |
8af68e4e JK |
1100 | static int |
1101 | watchpoint_check (p) | |
fe675038 | 1102 | char *p; |
8af68e4e JK |
1103 | { |
1104 | bpstat bs = (bpstat) p; | |
11054881 | 1105 | struct breakpoint *b; |
2b576293 C |
1106 | struct frame_info *fr; |
1107 | int within_current_scope; | |
999dd04b | 1108 | |
557f3a0e SS |
1109 | b = bs->breakpoint_at; |
1110 | ||
1111 | if (b->exp_valid_block == NULL) | |
8af68e4e | 1112 | within_current_scope = 1; |
fa99ebe1 JK |
1113 | else |
1114 | { | |
706dc3ce JL |
1115 | /* There is no current frame at this moment. If we're going to have |
1116 | any chance of handling watchpoints on local variables, we'll need | |
1117 | the frame chain (so we can determine if we're in scope). */ | |
1118 | reinit_frame_cache(); | |
557f3a0e | 1119 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
999dd04b | 1120 | within_current_scope = (fr != NULL); |
fa99ebe1 JK |
1121 | if (within_current_scope) |
1122 | /* If we end up stopping, the current frame will get selected | |
1123 | in normal_stop. So this call to select_frame won't affect | |
1124 | the user. */ | |
1125 | select_frame (fr, -1); | |
1126 | } | |
1127 | ||
8af68e4e JK |
1128 | if (within_current_scope) |
1129 | { | |
1130 | /* We use value_{,free_to_}mark because it could be a | |
1131 | *long* time before we return to the command level and | |
cef4c2e7 PS |
1132 | call free_all_values. We can't call free_all_values because |
1133 | we might be in the middle of evaluating a function call. */ | |
8af68e4e | 1134 | |
82a2edfb JK |
1135 | value_ptr mark = value_mark (); |
1136 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
557f3a0e | 1137 | if (!value_equal (b->val, new_val)) |
8af68e4e JK |
1138 | { |
1139 | release_value (new_val); | |
1140 | value_free_to_mark (mark); | |
557f3a0e SS |
1141 | bs->old_val = b->val; |
1142 | b->val = new_val; | |
8af68e4e JK |
1143 | /* We will stop here */ |
1144 | return WP_VALUE_CHANGED; | |
1145 | } | |
1146 | else | |
1147 | { | |
1148 | /* Nothing changed, don't do anything. */ | |
1149 | value_free_to_mark (mark); | |
1150 | /* We won't stop here */ | |
1151 | return WP_VALUE_NOT_CHANGED; | |
1152 | } | |
1153 | } | |
1154 | else | |
1155 | { | |
1156 | /* This seems like the only logical thing to do because | |
1157 | if we temporarily ignored the watchpoint, then when | |
1158 | we reenter the block in which it is valid it contains | |
1159 | garbage (in the case of a function, it may have two | |
1160 | garbage values, one before and one after the prologue). | |
1161 | So we can't even detect the first assignment to it and | |
1162 | watch after that (since the garbage may or may not equal | |
1163 | the first value assigned). */ | |
8af68e4e | 1164 | printf_filtered ("\ |
999dd04b | 1165 | Watchpoint %d deleted because the program has left the block in\n\ |
8af68e4e | 1166 | which its expression is valid.\n", bs->breakpoint_at->number); |
557f3a0e | 1167 | if (b->related_breakpoint) |
e51481f9 JL |
1168 | { |
1169 | b->related_breakpoint->enable = disable; | |
1170 | b->related_breakpoint->disposition = del_at_next_stop; | |
1171 | } | |
1172 | b->enable = disable; | |
1173 | b->disposition = del_at_next_stop; | |
999dd04b | 1174 | |
999dd04b | 1175 | return WP_DELETED; |
8af68e4e JK |
1176 | } |
1177 | } | |
1178 | ||
1179 | /* This is used when everything which needs to be printed has | |
1180 | already been printed. But we still want to print the frame. */ | |
1181 | static int | |
cabd4da6 | 1182 | print_it_done (bs) |
8af68e4e JK |
1183 | bpstat bs; |
1184 | { | |
1185 | return 0; | |
1186 | } | |
1187 | ||
cabd4da6 JK |
1188 | /* This is used when nothing should be printed for this bpstat entry. */ |
1189 | ||
1190 | static int | |
1191 | print_it_noop (bs) | |
1192 | bpstat bs; | |
1193 | { | |
1194 | return -1; | |
1195 | } | |
1196 | ||
cb6b0202 | 1197 | /* Get a bpstat associated with having just stopped at address *PC |
706dc3ce | 1198 | and frame address CORE_ADDRESS. Update *PC to point at the |
cb6b0202 JK |
1199 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero |
1200 | if this is known to not be a real breakpoint (it could still be a | |
1201 | watchpoint, though). */ | |
1202 | ||
bd5635a1 RP |
1203 | /* Determine whether we stopped at a breakpoint, etc, or whether we |
1204 | don't understand this stop. Result is a chain of bpstat's such that: | |
1205 | ||
1206 | if we don't understand the stop, the result is a null pointer. | |
1207 | ||
cb6b0202 | 1208 | if we understand why we stopped, the result is not null. |
bd5635a1 RP |
1209 | |
1210 | Each element of the chain refers to a particular breakpoint or | |
1211 | watchpoint at which we have stopped. (We may have stopped for | |
2d313932 | 1212 | several reasons concurrently.) |
bd5635a1 RP |
1213 | |
1214 | Each element of the chain has valid next, breakpoint_at, | |
1215 | commands, FIXME??? fields. | |
1216 | ||
1217 | */ | |
1218 | ||
bd5635a1 | 1219 | bpstat |
16726dd1 | 1220 | bpstat_stop_status (pc, not_a_breakpoint) |
bd5635a1 | 1221 | CORE_ADDR *pc; |
cb6b0202 | 1222 | int not_a_breakpoint; |
bd5635a1 | 1223 | { |
fa3764e2 | 1224 | register struct breakpoint *b, *temp; |
bd5635a1 | 1225 | CORE_ADDR bp_addr; |
bdbd5f50 | 1226 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1227 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
1228 | int real_breakpoint = 0; | |
bdbd5f50 | 1229 | #endif |
bd5635a1 | 1230 | /* Root of the chain of bpstat's */ |
e8bf33c4 | 1231 | struct bpstats root_bs[1]; |
bd5635a1 RP |
1232 | /* Pointer to the last thing in the chain currently. */ |
1233 | bpstat bs = root_bs; | |
11054881 KH |
1234 | static char message1[] = |
1235 | "Error evaluating expression for watchpoint %d\n"; | |
1236 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 RP |
1237 | |
1238 | /* Get the address where the breakpoint would have been. */ | |
1239 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
1240 | ||
fa3764e2 | 1241 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 1242 | { |
fa3764e2 JL |
1243 | if (b->enable == disabled |
1244 | || b->enable == shlib_disabled) | |
bd5635a1 | 1245 | continue; |
30875e1c | 1246 | |
999dd04b JL |
1247 | if (b->type != bp_watchpoint |
1248 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1249 | && b->type != bp_read_watchpoint |
1250 | && b->type != bp_access_watchpoint | |
1251 | && b->type != bp_hardware_breakpoint | |
999dd04b | 1252 | && b->address != bp_addr) |
bd5635a1 RP |
1253 | continue; |
1254 | ||
11054881 KH |
1255 | if (b->type == bp_hardware_breakpoint |
1256 | && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK)) | |
1257 | continue; | |
1258 | ||
999dd04b JL |
1259 | if (b->type != bp_watchpoint |
1260 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1261 | && b->type != bp_read_watchpoint |
1262 | && b->type != bp_access_watchpoint | |
999dd04b | 1263 | && not_a_breakpoint) |
cb6b0202 JK |
1264 | continue; |
1265 | ||
30875e1c SG |
1266 | /* Come here if it's a watchpoint, or if the break address matches */ |
1267 | ||
9f577285 SS |
1268 | ++(b->hit_count); |
1269 | ||
bd5635a1 RP |
1270 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ |
1271 | ||
cabd4da6 JK |
1272 | bs->stop = 1; |
1273 | bs->print = 1; | |
bd5635a1 | 1274 | |
11054881 | 1275 | sprintf (message, message1, b->number); |
999dd04b | 1276 | if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) |
bd5635a1 | 1277 | { |
fe675038 JK |
1278 | switch (catch_errors (watchpoint_check, (char *) bs, message, |
1279 | RETURN_MASK_ALL)) | |
bd5635a1 | 1280 | { |
999dd04b | 1281 | case WP_DELETED: |
8af68e4e | 1282 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1283 | bs->print_it = print_it_done; |
8af68e4e JK |
1284 | /* Stop. */ |
1285 | break; | |
1286 | case WP_VALUE_CHANGED: | |
1287 | /* Stop. */ | |
1288 | break; | |
1289 | case WP_VALUE_NOT_CHANGED: | |
1290 | /* Don't stop. */ | |
cabd4da6 JK |
1291 | bs->print_it = print_it_noop; |
1292 | bs->stop = 0; | |
bd5635a1 | 1293 | continue; |
8af68e4e JK |
1294 | default: |
1295 | /* Can't happen. */ | |
1296 | /* FALLTHROUGH */ | |
1297 | case 0: | |
1298 | /* Error from catch_errors. */ | |
999dd04b JL |
1299 | printf_filtered ("Watchpoint %d deleted.\n", b->number); |
1300 | if (b->related_breakpoint) | |
e51481f9 JL |
1301 | { |
1302 | b->related_breakpoint->enable = disable; | |
1303 | b->related_breakpoint->disposition = del_at_next_stop; | |
1304 | } | |
1305 | b->enable = disable; | |
1306 | b->disposition = del_at_next_stop; | |
8af68e4e | 1307 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1308 | bs->print_it = print_it_done; |
999dd04b | 1309 | |
8af68e4e JK |
1310 | /* Stop. */ |
1311 | break; | |
bd5635a1 RP |
1312 | } |
1313 | } | |
11054881 KH |
1314 | else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) |
1315 | { | |
1316 | CORE_ADDR addr; | |
1317 | value_ptr v; | |
1318 | int found = 0; | |
1319 | ||
1320 | addr = target_stopped_data_address(); | |
1321 | if (addr == 0) continue; | |
1322 | for (v = b->val_chain; v; v = v->next) | |
1323 | { | |
1324 | if (v->lval == lval_memory) | |
1325 | { | |
1326 | CORE_ADDR vaddr; | |
1327 | ||
1328 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1329 | if (addr == vaddr) | |
1330 | found = 1; | |
1331 | } | |
1332 | } | |
1333 | if (found) | |
1334 | switch (catch_errors (watchpoint_check, (char *) bs, message, | |
1335 | RETURN_MASK_ALL)) | |
1336 | { | |
1337 | case WP_DELETED: | |
1338 | /* We've already printed what needs to be printed. */ | |
1339 | bs->print_it = print_it_done; | |
1340 | /* Stop. */ | |
1341 | break; | |
1342 | case WP_VALUE_CHANGED: | |
1343 | case WP_VALUE_NOT_CHANGED: | |
1344 | /* Stop. */ | |
1345 | break; | |
1346 | default: | |
1347 | /* Can't happen. */ | |
1348 | case 0: | |
1349 | /* Error from catch_errors. */ | |
1350 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
e51481f9 JL |
1351 | if (b->related_breakpoint) |
1352 | { | |
1353 | b->related_breakpoint->enable = disable; | |
1354 | b->related_breakpoint->disposition = del_at_next_stop; | |
1355 | } | |
1356 | b->enable = disable; | |
1357 | b->disposition = del_at_next_stop; | |
11054881 KH |
1358 | /* We've already printed what needs to be printed. */ |
1359 | bs->print_it = print_it_done; | |
1360 | break; | |
1361 | } | |
1362 | } | |
bdbd5f50 | 1363 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1364 | else |
1365 | real_breakpoint = 1; | |
bdbd5f50 | 1366 | #endif |
bd5635a1 | 1367 | |
706dc3ce | 1368 | if (b->frame && b->frame != (get_current_frame ())->frame) |
cabd4da6 | 1369 | bs->stop = 0; |
bd5635a1 RP |
1370 | else |
1371 | { | |
fee933f1 | 1372 | int value_is_zero = 0; |
bd5635a1 RP |
1373 | |
1374 | if (b->cond) | |
1375 | { | |
1376 | /* Need to select the frame, with all that implies | |
1377 | so that the conditions will have the right context. */ | |
1378 | select_frame (get_current_frame (), 0); | |
bdbd5f50 JG |
1379 | value_is_zero |
1380 | = catch_errors (breakpoint_cond_eval, (char *)(b->cond), | |
fe675038 JK |
1381 | "Error in testing breakpoint condition:\n", |
1382 | RETURN_MASK_ALL); | |
06b6c733 | 1383 | /* FIXME-someday, should give breakpoint # */ |
bd5635a1 RP |
1384 | free_all_values (); |
1385 | } | |
bdbd5f50 | 1386 | if (b->cond && value_is_zero) |
bd5635a1 | 1387 | { |
cabd4da6 | 1388 | bs->stop = 0; |
bd5635a1 RP |
1389 | } |
1390 | else if (b->ignore_count > 0) | |
1391 | { | |
1392 | b->ignore_count--; | |
cabd4da6 | 1393 | bs->stop = 0; |
bd5635a1 RP |
1394 | } |
1395 | else | |
1396 | { | |
1397 | /* We will stop here */ | |
30875e1c | 1398 | if (b->disposition == disable) |
bd5635a1 RP |
1399 | b->enable = disabled; |
1400 | bs->commands = b->commands; | |
1401 | if (b->silent) | |
cabd4da6 | 1402 | bs->print = 0; |
2d313932 | 1403 | if (bs->commands && STREQ ("silent", bs->commands->line)) |
bd5635a1 RP |
1404 | { |
1405 | bs->commands = bs->commands->next; | |
cabd4da6 | 1406 | bs->print = 0; |
bd5635a1 RP |
1407 | } |
1408 | } | |
1409 | } | |
cabd4da6 JK |
1410 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
1411 | if (bs->stop == 0 || bs->print == 0) | |
1412 | bs->print_it = print_it_noop; | |
bd5635a1 RP |
1413 | } |
1414 | ||
1415 | bs->next = NULL; /* Terminate the chain */ | |
1416 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
cabd4da6 | 1417 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1418 | if (bs) |
1419 | { | |
bd5635a1 RP |
1420 | if (real_breakpoint) |
1421 | { | |
1422 | *pc = bp_addr; | |
1423 | #if defined (SHIFT_INST_REGS) | |
817ac7f8 | 1424 | SHIFT_INST_REGS(); |
bd5635a1 RP |
1425 | #else /* No SHIFT_INST_REGS. */ |
1426 | write_pc (bp_addr); | |
1427 | #endif /* No SHIFT_INST_REGS. */ | |
1428 | } | |
bd5635a1 | 1429 | } |
cabd4da6 | 1430 | #endif /* DECR_PC_AFTER_BREAK != 0. */ |
999dd04b JL |
1431 | |
1432 | /* The value of a hardware watchpoint hasn't changed, but the | |
1433 | intermediate memory locations we are watching may have. */ | |
11054881 KH |
1434 | if (bs && ! bs->stop && |
1435 | (bs->breakpoint_at->type == bp_hardware_watchpoint || | |
1436 | bs->breakpoint_at->type == bp_read_watchpoint || | |
1437 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
999dd04b JL |
1438 | { |
1439 | remove_breakpoints (); | |
1440 | insert_breakpoints (); | |
1441 | } | |
bd5635a1 RP |
1442 | return bs; |
1443 | } | |
cabd4da6 JK |
1444 | \f |
1445 | /* Tell what to do about this bpstat. */ | |
fe675038 | 1446 | struct bpstat_what |
cabd4da6 JK |
1447 | bpstat_what (bs) |
1448 | bpstat bs; | |
1449 | { | |
1450 | /* Classify each bpstat as one of the following. */ | |
1451 | enum class { | |
fe675038 JK |
1452 | /* This bpstat element has no effect on the main_action. */ |
1453 | no_effect = 0, | |
cabd4da6 JK |
1454 | |
1455 | /* There was a watchpoint, stop but don't print. */ | |
1456 | wp_silent, | |
1457 | ||
1458 | /* There was a watchpoint, stop and print. */ | |
1459 | wp_noisy, | |
1460 | ||
1461 | /* There was a breakpoint but we're not stopping. */ | |
1462 | bp_nostop, | |
1463 | ||
1464 | /* There was a breakpoint, stop but don't print. */ | |
1465 | bp_silent, | |
1466 | ||
1467 | /* There was a breakpoint, stop and print. */ | |
1468 | bp_noisy, | |
1469 | ||
1470 | /* We hit the longjmp breakpoint. */ | |
1471 | long_jump, | |
1472 | ||
1473 | /* We hit the longjmp_resume breakpoint. */ | |
1474 | long_resume, | |
1475 | ||
d7e7e851 JK |
1476 | /* We hit the step_resume breakpoint. */ |
1477 | step_resume, | |
1478 | ||
bcc37718 JK |
1479 | /* We hit the through_sigtramp breakpoint. */ |
1480 | through_sig, | |
1481 | ||
27b6a1fa JL |
1482 | /* We hit the shared library event breakpoint. */ |
1483 | shlib_event, | |
1484 | ||
cabd4da6 JK |
1485 | /* This is just used to count how many enums there are. */ |
1486 | class_last | |
1487 | }; | |
1488 | ||
1489 | /* Here is the table which drives this routine. So that we can | |
1490 | format it pretty, we define some abbreviations for the | |
1491 | enum bpstat_what codes. */ | |
27b6a1fa JL |
1492 | #define kc BPSTAT_WHAT_KEEP_CHECKING |
1493 | #define ss BPSTAT_WHAT_STOP_SILENT | |
1494 | #define sn BPSTAT_WHAT_STOP_NOISY | |
1495 | #define sgl BPSTAT_WHAT_SINGLE | |
1496 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
1497 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
1498 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
d7e7e851 | 1499 | #define sr BPSTAT_WHAT_STEP_RESUME |
bcc37718 | 1500 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP |
27b6a1fa | 1501 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
d7e7e851 | 1502 | |
cabd4da6 JK |
1503 | /* "Can't happen." Might want to print an error message. |
1504 | abort() is not out of the question, but chances are GDB is just | |
1505 | a bit confused, not unusable. */ | |
1506 | #define err BPSTAT_WHAT_STOP_NOISY | |
1507 | ||
1508 | /* Given an old action and a class, come up with a new action. */ | |
84d59861 JK |
1509 | /* One interesting property of this table is that wp_silent is the same |
1510 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
1511 | after stopping, the check for whether to step over a breakpoint | |
1512 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
1513 | reference to how we stopped. We retain separate wp_silent and bp_silent | |
1514 | codes in case we want to change that someday. */ | |
d7e7e851 JK |
1515 | |
1516 | /* step_resume entries: a step resume breakpoint overrides another | |
1517 | breakpoint of signal handling (see comment in wait_for_inferior | |
1518 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
bcc37718 JK |
1519 | /* We handle the through_sigtramp_breakpoint the same way; having both |
1520 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
d7e7e851 | 1521 | |
fe675038 | 1522 | static const enum bpstat_what_main_action |
cabd4da6 JK |
1523 | table[(int)class_last][(int)BPSTAT_WHAT_LAST] = |
1524 | { | |
1525 | /* old action */ | |
27b6a1fa | 1526 | /* kc ss sn sgl slr clr clrs sr ts shl |
bcc37718 | 1527 | */ |
27b6a1fa JL |
1528 | /*no_effect*/ {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl}, |
1529 | /*wp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl}, | |
1530 | /*wp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl}, | |
1531 | /*bp_nostop*/ {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl}, | |
1532 | /*bp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl}, | |
1533 | /*bp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl}, | |
1534 | /*long_jump*/ {slr, ss, sn, slr, err, err, err, sr, ts, shl}, | |
1535 | /*long_resume*/ {clr, ss, sn, clrs, err, err, err, sr, ts, shl}, | |
1536 | /*step_resume*/ {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl}, | |
1537 | /*through_sig*/ {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl}, | |
1538 | /*shlib*/ {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl} | |
cabd4da6 | 1539 | }; |
27b6a1fa JL |
1540 | #undef kc |
1541 | #undef ss | |
1542 | #undef sn | |
1543 | #undef sgl | |
1544 | #undef slr | |
1545 | #undef clr | |
1546 | #undef clrs | |
cabd4da6 | 1547 | #undef err |
bcc37718 JK |
1548 | #undef sr |
1549 | #undef ts | |
27b6a1fa | 1550 | #undef shl |
fe675038 | 1551 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
84d59861 | 1552 | struct bpstat_what retval; |
cabd4da6 | 1553 | |
cef4c2e7 | 1554 | retval.call_dummy = 0; |
cabd4da6 JK |
1555 | for (; bs != NULL; bs = bs->next) |
1556 | { | |
fee933f1 | 1557 | enum class bs_class = no_effect; |
cabd4da6 JK |
1558 | if (bs->breakpoint_at == NULL) |
1559 | /* I suspect this can happen if it was a momentary breakpoint | |
1560 | which has since been deleted. */ | |
1561 | continue; | |
1562 | switch (bs->breakpoint_at->type) | |
1563 | { | |
1564 | case bp_breakpoint: | |
11054881 | 1565 | case bp_hardware_breakpoint: |
cabd4da6 JK |
1566 | case bp_until: |
1567 | case bp_finish: | |
1568 | if (bs->stop) | |
1569 | { | |
1570 | if (bs->print) | |
1571 | bs_class = bp_noisy; | |
1572 | else | |
1573 | bs_class = bp_silent; | |
1574 | } | |
1575 | else | |
1576 | bs_class = bp_nostop; | |
1577 | break; | |
1578 | case bp_watchpoint: | |
999dd04b | 1579 | case bp_hardware_watchpoint: |
11054881 KH |
1580 | case bp_read_watchpoint: |
1581 | case bp_access_watchpoint: | |
cabd4da6 JK |
1582 | if (bs->stop) |
1583 | { | |
1584 | if (bs->print) | |
1585 | bs_class = wp_noisy; | |
1586 | else | |
1587 | bs_class = wp_silent; | |
1588 | } | |
1589 | else | |
fe675038 JK |
1590 | /* There was a watchpoint, but we're not stopping. This requires |
1591 | no further action. */ | |
1592 | bs_class = no_effect; | |
cabd4da6 JK |
1593 | break; |
1594 | case bp_longjmp: | |
1595 | bs_class = long_jump; | |
1596 | break; | |
1597 | case bp_longjmp_resume: | |
1598 | bs_class = long_resume; | |
1599 | break; | |
fe675038 | 1600 | case bp_step_resume: |
fe675038 JK |
1601 | if (bs->stop) |
1602 | { | |
d7e7e851 | 1603 | bs_class = step_resume; |
fe675038 JK |
1604 | } |
1605 | else | |
1606 | /* It is for the wrong frame. */ | |
1607 | bs_class = bp_nostop; | |
bcc37718 JK |
1608 | break; |
1609 | case bp_through_sigtramp: | |
1610 | bs_class = through_sig; | |
fe675038 | 1611 | break; |
999dd04b JL |
1612 | case bp_watchpoint_scope: |
1613 | bs_class = bp_nostop; | |
1614 | break; | |
27b6a1fa JL |
1615 | case bp_shlib_event: |
1616 | bs_class = shlib_event; | |
1617 | break; | |
84d59861 JK |
1618 | case bp_call_dummy: |
1619 | /* Make sure the action is stop (silent or noisy), so infrun.c | |
1620 | pops the dummy frame. */ | |
1621 | bs_class = bp_silent; | |
1622 | retval.call_dummy = 1; | |
bb7b3800 | 1623 | break; |
cabd4da6 JK |
1624 | } |
1625 | current_action = table[(int)bs_class][(int)current_action]; | |
1626 | } | |
84d59861 JK |
1627 | retval.main_action = current_action; |
1628 | return retval; | |
cabd4da6 | 1629 | } |
bd5635a1 | 1630 | |
30875e1c SG |
1631 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
1632 | without hardware support). This isn't related to a specific bpstat, | |
1633 | just to things like whether watchpoints are set. */ | |
1634 | ||
bd5635a1 RP |
1635 | int |
1636 | bpstat_should_step () | |
1637 | { | |
1638 | struct breakpoint *b; | |
1639 | ALL_BREAKPOINTS (b) | |
30875e1c | 1640 | if (b->enable == enabled && b->type == bp_watchpoint) |
bd5635a1 RP |
1641 | return 1; |
1642 | return 0; | |
1643 | } | |
1644 | \f | |
1645 | /* Print information on breakpoint number BNUM, or -1 if all. | |
1646 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
1647 | is nonzero, process only watchpoints. */ | |
1648 | ||
1649 | static void | |
c8950965 | 1650 | breakpoint_1 (bnum, allflag) |
bd5635a1 | 1651 | int bnum; |
80ba48f5 | 1652 | int allflag; |
bd5635a1 RP |
1653 | { |
1654 | register struct breakpoint *b; | |
1655 | register struct command_line *l; | |
1656 | register struct symbol *sym; | |
1657 | CORE_ADDR last_addr = (CORE_ADDR)-1; | |
30875e1c | 1658 | int found_a_breakpoint = 0; |
11054881 KH |
1659 | static char *bptypes[] = {"breakpoint", "hw breakpoint", |
1660 | "until", "finish", "watchpoint", | |
1661 | "hw watchpoint", "read watchpoint", | |
1662 | "acc watchpoint", "longjmp", | |
999dd04b | 1663 | "longjmp resume", "step resume", |
27b6a1fa JL |
1664 | "sigtramp", |
1665 | "watchpoint scope", "call dummy", | |
1666 | "shlib events" }; | |
e51481f9 | 1667 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; |
30875e1c | 1668 | static char bpenables[] = "ny"; |
0a62ff36 | 1669 | char wrap_indent[80]; |
30875e1c | 1670 | |
bd5635a1 | 1671 | ALL_BREAKPOINTS (b) |
30875e1c SG |
1672 | if (bnum == -1 |
1673 | || bnum == b->number) | |
bd5635a1 | 1674 | { |
80ba48f5 SG |
1675 | /* We only print out user settable breakpoints unless the allflag is set. */ |
1676 | if (!allflag | |
1677 | && b->type != bp_breakpoint | |
11054881 | 1678 | && b->type != bp_hardware_breakpoint |
999dd04b | 1679 | && b->type != bp_watchpoint |
11054881 KH |
1680 | && b->type != bp_read_watchpoint |
1681 | && b->type != bp_access_watchpoint | |
999dd04b | 1682 | && b->type != bp_hardware_watchpoint) |
80ba48f5 SG |
1683 | continue; |
1684 | ||
30875e1c | 1685 | if (!found_a_breakpoint++) |
47ebe8fd | 1686 | { |
f2d9c058 KH |
1687 | annotate_breakpoints_headers (); |
1688 | ||
1689 | annotate_field (0); | |
1690 | printf_filtered ("Num "); | |
1691 | annotate_field (1); | |
1692 | printf_filtered ("Type "); | |
1693 | annotate_field (2); | |
1694 | printf_filtered ("Disp "); | |
1695 | annotate_field (3); | |
1696 | printf_filtered ("Enb "); | |
1697 | if (addressprint) | |
1698 | { | |
1699 | annotate_field (4); | |
1700 | printf_filtered ("Address "); | |
1701 | } | |
1702 | annotate_field (5); | |
1703 | printf_filtered ("What\n"); | |
1704 | ||
1705 | annotate_breakpoints_table (); | |
1706 | } | |
1707 | ||
1708 | annotate_record (); | |
1709 | annotate_field (0); | |
1710 | printf_filtered ("%-3d ", b->number); | |
1711 | annotate_field (1); | |
1712 | printf_filtered ("%-14s ", bptypes[(int)b->type]); | |
1713 | annotate_field (2); | |
1714 | printf_filtered ("%-4s ", bpdisps[(int)b->disposition]); | |
1715 | annotate_field (3); | |
47ebe8fd JK |
1716 | printf_filtered ("%-3c ", bpenables[(int)b->enable]); |
1717 | ||
0a62ff36 JK |
1718 | strcpy (wrap_indent, " "); |
1719 | if (addressprint) | |
1720 | strcat (wrap_indent, " "); | |
30875e1c | 1721 | switch (b->type) |
bd5635a1 | 1722 | { |
30875e1c | 1723 | case bp_watchpoint: |
999dd04b | 1724 | case bp_hardware_watchpoint: |
11054881 KH |
1725 | case bp_read_watchpoint: |
1726 | case bp_access_watchpoint: | |
47ebe8fd JK |
1727 | /* Field 4, the address, is omitted (which makes the columns |
1728 | not line up too nicely with the headers, but the effect | |
1729 | is relatively readable). */ | |
9f577285 | 1730 | annotate_field (5); |
199b2450 | 1731 | print_expression (b->exp, gdb_stdout); |
30875e1c | 1732 | break; |
84d59861 | 1733 | |
30875e1c | 1734 | case bp_breakpoint: |
11054881 | 1735 | case bp_hardware_breakpoint: |
80ba48f5 SG |
1736 | case bp_until: |
1737 | case bp_finish: | |
1738 | case bp_longjmp: | |
1739 | case bp_longjmp_resume: | |
84d59861 | 1740 | case bp_step_resume: |
bcc37718 | 1741 | case bp_through_sigtramp: |
999dd04b | 1742 | case bp_watchpoint_scope: |
bb7b3800 | 1743 | case bp_call_dummy: |
27b6a1fa | 1744 | case bp_shlib_event: |
bd5635a1 | 1745 | if (addressprint) |
47ebe8fd | 1746 | { |
f2d9c058 | 1747 | annotate_field (4); |
47ebe8fd JK |
1748 | /* FIXME-32x64: need a print_address_numeric with |
1749 | field width */ | |
1750 | printf_filtered | |
1751 | ("%s ", | |
1752 | local_hex_string_custom | |
1753 | ((unsigned long) b->address, "08l")); | |
1754 | } | |
1755 | ||
f2d9c058 | 1756 | annotate_field (5); |
bd5635a1 RP |
1757 | |
1758 | last_addr = b->address; | |
d889f6b7 | 1759 | if (b->source_file) |
bd5635a1 RP |
1760 | { |
1761 | sym = find_pc_function (b->address); | |
1762 | if (sym) | |
1763 | { | |
199b2450 TL |
1764 | fputs_filtered ("in ", gdb_stdout); |
1765 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
0a62ff36 | 1766 | wrap_here (wrap_indent); |
199b2450 | 1767 | fputs_filtered (" at ", gdb_stdout); |
bd5635a1 | 1768 | } |
199b2450 | 1769 | fputs_filtered (b->source_file, gdb_stdout); |
bd5635a1 RP |
1770 | printf_filtered (":%d", b->line_number); |
1771 | } | |
1772 | else | |
199b2450 | 1773 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); |
fee933f1 | 1774 | break; |
bd5635a1 RP |
1775 | } |
1776 | ||
1777 | printf_filtered ("\n"); | |
1778 | ||
1779 | if (b->frame) | |
833e0d94 | 1780 | { |
f2d9c058 | 1781 | annotate_field (6); |
47ebe8fd | 1782 | |
833e0d94 | 1783 | printf_filtered ("\tstop only in stack frame at "); |
d24c0599 | 1784 | print_address_numeric (b->frame, 1, gdb_stdout); |
833e0d94 | 1785 | printf_filtered ("\n"); |
bcc37718 | 1786 | } |
47ebe8fd | 1787 | |
bd5635a1 RP |
1788 | if (b->cond) |
1789 | { | |
f2d9c058 | 1790 | annotate_field (7); |
47ebe8fd | 1791 | |
bd5635a1 | 1792 | printf_filtered ("\tstop only if "); |
199b2450 | 1793 | print_expression (b->cond, gdb_stdout); |
bd5635a1 RP |
1794 | printf_filtered ("\n"); |
1795 | } | |
47ebe8fd | 1796 | |
9f577285 SS |
1797 | if (show_breakpoint_hit_counts && b->hit_count) |
1798 | { | |
1799 | /* FIXME should make an annotation for this */ | |
1800 | ||
16726dd1 JK |
1801 | printf_filtered ("\tbreakpoint already hit %d time%s\n", |
1802 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
9f577285 SS |
1803 | } |
1804 | ||
bd5635a1 | 1805 | if (b->ignore_count) |
47ebe8fd | 1806 | { |
f2d9c058 | 1807 | annotate_field (8); |
47ebe8fd JK |
1808 | |
1809 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
1810 | } | |
1811 | ||
bd5635a1 | 1812 | if ((l = b->commands)) |
47ebe8fd | 1813 | { |
f2d9c058 | 1814 | annotate_field (9); |
47ebe8fd JK |
1815 | |
1816 | while (l) | |
1817 | { | |
0f8cdd9b | 1818 | print_command_line (l, 4); |
47ebe8fd JK |
1819 | l = l->next; |
1820 | } | |
1821 | } | |
bd5635a1 RP |
1822 | } |
1823 | ||
fee933f1 RP |
1824 | if (!found_a_breakpoint) |
1825 | { | |
1826 | if (bnum == -1) | |
1827 | printf_filtered ("No breakpoints or watchpoints.\n"); | |
1828 | else | |
1829 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); | |
1830 | } | |
30875e1c SG |
1831 | else |
1832 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
1833 | that a comparison of an unsigned with -1 is always false. */ | |
1834 | if (last_addr != (CORE_ADDR)-1) | |
1835 | set_next_address (last_addr); | |
47ebe8fd | 1836 | |
f2d9c058 | 1837 | annotate_breakpoints_table_end (); |
bd5635a1 RP |
1838 | } |
1839 | ||
bdbd5f50 | 1840 | /* ARGSUSED */ |
bd5635a1 RP |
1841 | static void |
1842 | breakpoints_info (bnum_exp, from_tty) | |
1843 | char *bnum_exp; | |
1844 | int from_tty; | |
1845 | { | |
1846 | int bnum = -1; | |
1847 | ||
1848 | if (bnum_exp) | |
1849 | bnum = parse_and_eval_address (bnum_exp); | |
1850 | ||
c8950965 | 1851 | breakpoint_1 (bnum, 0); |
80ba48f5 SG |
1852 | } |
1853 | ||
9b280a7f JG |
1854 | #if MAINTENANCE_CMDS |
1855 | ||
80ba48f5 SG |
1856 | /* ARGSUSED */ |
1857 | static void | |
9b280a7f | 1858 | maintenance_info_breakpoints (bnum_exp, from_tty) |
80ba48f5 SG |
1859 | char *bnum_exp; |
1860 | int from_tty; | |
1861 | { | |
1862 | int bnum = -1; | |
1863 | ||
1864 | if (bnum_exp) | |
1865 | bnum = parse_and_eval_address (bnum_exp); | |
1866 | ||
c8950965 | 1867 | breakpoint_1 (bnum, 1); |
bd5635a1 RP |
1868 | } |
1869 | ||
9b280a7f JG |
1870 | #endif |
1871 | ||
bd5635a1 RP |
1872 | /* Print a message describing any breakpoints set at PC. */ |
1873 | ||
1874 | static void | |
1875 | describe_other_breakpoints (pc) | |
1876 | register CORE_ADDR pc; | |
1877 | { | |
1878 | register int others = 0; | |
1879 | register struct breakpoint *b; | |
1880 | ||
1881 | ALL_BREAKPOINTS (b) | |
1882 | if (b->address == pc) | |
1883 | others++; | |
1884 | if (others > 0) | |
1885 | { | |
833e0d94 | 1886 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); |
bd5635a1 RP |
1887 | ALL_BREAKPOINTS (b) |
1888 | if (b->address == pc) | |
1889 | { | |
1890 | others--; | |
833e0d94 JK |
1891 | printf_filtered |
1892 | ("%d%s%s ", | |
1893 | b->number, | |
fa3764e2 JL |
1894 | ((b->enable == disabled || b->enable == shlib_disabled) |
1895 | ? " (disabled)" : ""), | |
833e0d94 | 1896 | (others > 1) ? "," : ((others == 1) ? " and" : "")); |
bd5635a1 | 1897 | } |
833e0d94 | 1898 | printf_filtered ("also set at pc "); |
d24c0599 | 1899 | print_address_numeric (pc, 1, gdb_stdout); |
833e0d94 | 1900 | printf_filtered (".\n"); |
bd5635a1 RP |
1901 | } |
1902 | } | |
1903 | \f | |
1904 | /* Set the default place to put a breakpoint | |
1905 | for the `break' command with no arguments. */ | |
1906 | ||
1907 | void | |
1908 | set_default_breakpoint (valid, addr, symtab, line) | |
1909 | int valid; | |
1910 | CORE_ADDR addr; | |
1911 | struct symtab *symtab; | |
1912 | int line; | |
1913 | { | |
1914 | default_breakpoint_valid = valid; | |
1915 | default_breakpoint_address = addr; | |
1916 | default_breakpoint_symtab = symtab; | |
1917 | default_breakpoint_line = line; | |
1918 | } | |
1919 | ||
1920 | /* Rescan breakpoints at address ADDRESS, | |
1921 | marking the first one as "first" and any others as "duplicates". | |
1922 | This is so that the bpt instruction is only inserted once. */ | |
1923 | ||
1924 | static void | |
1925 | check_duplicates (address) | |
1926 | CORE_ADDR address; | |
1927 | { | |
1928 | register struct breakpoint *b; | |
1929 | register int count = 0; | |
1930 | ||
30875e1c | 1931 | if (address == 0) /* Watchpoints are uninteresting */ |
f266e564 JK |
1932 | return; |
1933 | ||
bd5635a1 | 1934 | ALL_BREAKPOINTS (b) |
fa3764e2 JL |
1935 | if (b->enable != disabled |
1936 | && b->enable != shlib_disabled | |
1937 | && b->address == address) | |
bd5635a1 RP |
1938 | { |
1939 | count++; | |
1940 | b->duplicate = count > 1; | |
1941 | } | |
1942 | } | |
1943 | ||
1944 | /* Low level routine to set a breakpoint. | |
1945 | Takes as args the three things that every breakpoint must have. | |
1946 | Returns the breakpoint object so caller can set other things. | |
1947 | Does not set the breakpoint number! | |
f266e564 JK |
1948 | Does not print anything. |
1949 | ||
1950 | ==> This routine should not be called if there is a chance of later | |
1951 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
1952 | your arguments BEFORE calling this routine! */ | |
bd5635a1 RP |
1953 | |
1954 | static struct breakpoint * | |
1955 | set_raw_breakpoint (sal) | |
1956 | struct symtab_and_line sal; | |
1957 | { | |
1958 | register struct breakpoint *b, *b1; | |
1959 | ||
1960 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4ed3a9ea | 1961 | memset (b, 0, sizeof (*b)); |
bd5635a1 | 1962 | b->address = sal.pc; |
d889f6b7 JK |
1963 | if (sal.symtab == NULL) |
1964 | b->source_file = NULL; | |
1965 | else | |
1966 | b->source_file = savestring (sal.symtab->filename, | |
1967 | strlen (sal.symtab->filename)); | |
706dc3ce JL |
1968 | b->language = current_language->la_language; |
1969 | b->input_radix = input_radix; | |
199b2450 | 1970 | b->thread = -1; |
bd5635a1 RP |
1971 | b->line_number = sal.line; |
1972 | b->enable = enabled; | |
1973 | b->next = 0; | |
1974 | b->silent = 0; | |
1975 | b->ignore_count = 0; | |
1976 | b->commands = NULL; | |
30875e1c | 1977 | b->frame = 0; |
bd5635a1 RP |
1978 | |
1979 | /* Add this breakpoint to the end of the chain | |
1980 | so that a list of breakpoints will come out in order | |
1981 | of increasing numbers. */ | |
1982 | ||
1983 | b1 = breakpoint_chain; | |
1984 | if (b1 == 0) | |
1985 | breakpoint_chain = b; | |
1986 | else | |
1987 | { | |
1988 | while (b1->next) | |
1989 | b1 = b1->next; | |
1990 | b1->next = b; | |
1991 | } | |
1992 | ||
1993 | check_duplicates (sal.pc); | |
6c803036 | 1994 | breakpoints_changed (); |
bd5635a1 RP |
1995 | |
1996 | return b; | |
1997 | } | |
1998 | ||
27b6a1fa JL |
1999 | static int internal_breakpoint_number = -1; |
2000 | ||
39ce6829 PS |
2001 | #ifdef GET_LONGJMP_TARGET |
2002 | ||
30875e1c | 2003 | static void |
cd10c7e3 | 2004 | create_longjmp_breakpoint (func_name) |
30875e1c | 2005 | char *func_name; |
30875e1c | 2006 | { |
30875e1c SG |
2007 | struct symtab_and_line sal; |
2008 | struct breakpoint *b; | |
2009 | ||
30875e1c SG |
2010 | if (func_name != NULL) |
2011 | { | |
2012 | struct minimal_symbol *m; | |
2013 | ||
e8bf33c4 | 2014 | m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *)NULL); |
30875e1c | 2015 | if (m) |
2d313932 | 2016 | sal.pc = SYMBOL_VALUE_ADDRESS (m); |
30875e1c SG |
2017 | else |
2018 | return; | |
2019 | } | |
2020 | else | |
2021 | sal.pc = 0; | |
2022 | ||
2023 | sal.symtab = NULL; | |
2024 | sal.line = 0; | |
30875e1c | 2025 | |
cd10c7e3 | 2026 | b = set_raw_breakpoint (sal); |
30875e1c SG |
2027 | if (!b) return; |
2028 | ||
80ba48f5 | 2029 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; |
30875e1c SG |
2030 | b->disposition = donttouch; |
2031 | b->enable = disabled; | |
2032 | b->silent = 1; | |
80ba48f5 SG |
2033 | if (func_name) |
2034 | b->addr_string = strsave(func_name); | |
2035 | b->number = internal_breakpoint_number--; | |
30875e1c | 2036 | } |
30875e1c | 2037 | |
39ce6829 PS |
2038 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
2039 | ||
30875e1c SG |
2040 | /* Call this routine when stepping and nexting to enable a breakpoint if we do |
2041 | a longjmp(). When we hit that breakpoint, call | |
2042 | set_longjmp_resume_breakpoint() to figure out where we are going. */ | |
2043 | ||
2044 | void | |
2045 | enable_longjmp_breakpoint() | |
2046 | { | |
80ba48f5 SG |
2047 | register struct breakpoint *b; |
2048 | ||
2049 | ALL_BREAKPOINTS (b) | |
2050 | if (b->type == bp_longjmp) | |
9b280a7f JG |
2051 | { |
2052 | b->enable = enabled; | |
2053 | check_duplicates (b->address); | |
2054 | } | |
30875e1c SG |
2055 | } |
2056 | ||
2057 | void | |
2058 | disable_longjmp_breakpoint() | |
2059 | { | |
80ba48f5 SG |
2060 | register struct breakpoint *b; |
2061 | ||
2062 | ALL_BREAKPOINTS (b) | |
9b280a7f | 2063 | if ( b->type == bp_longjmp |
80ba48f5 | 2064 | || b->type == bp_longjmp_resume) |
9b280a7f JG |
2065 | { |
2066 | b->enable = disabled; | |
2067 | check_duplicates (b->address); | |
2068 | } | |
30875e1c SG |
2069 | } |
2070 | ||
27b6a1fa JL |
2071 | #ifdef SOLIB_ADD |
2072 | void | |
2073 | remove_solib_event_breakpoints () | |
2074 | { | |
fa3764e2 | 2075 | register struct breakpoint *b, *temp; |
27b6a1fa | 2076 | |
fa3764e2 | 2077 | ALL_BREAKPOINTS_SAFE (b, temp) |
27b6a1fa JL |
2078 | if (b->type == bp_shlib_event) |
2079 | delete_breakpoint (b); | |
2080 | } | |
2081 | ||
2082 | void | |
2083 | create_solib_event_breakpoint (address) | |
2084 | CORE_ADDR address; | |
2085 | { | |
2086 | struct breakpoint *b; | |
2087 | struct symtab_and_line sal; | |
2088 | ||
2089 | sal.pc = address; | |
2090 | sal.symtab = NULL; | |
2091 | sal.line = 0; | |
2092 | b = set_raw_breakpoint (sal); | |
2093 | b->number = internal_breakpoint_number--; | |
2094 | b->disposition = donttouch; | |
2095 | b->type = bp_shlib_event; | |
2096 | } | |
fa3764e2 JL |
2097 | |
2098 | /* Try to reenable any breakpoints in shared libraries. */ | |
2099 | void | |
2100 | re_enable_breakpoints_in_shlibs () | |
2101 | { | |
2102 | struct breakpoint *b; | |
2103 | ||
2104 | ALL_BREAKPOINTS (b) | |
2105 | if (b->enable == shlib_disabled) | |
2106 | { | |
2107 | char buf[1]; | |
2108 | ||
2109 | /* Do not reenable the breakpoint if the shared library | |
2110 | is still not mapped in. */ | |
2111 | if (target_read_memory (b->address, buf, 1) == 0) | |
2112 | b->enable = enabled; | |
2113 | } | |
2114 | } | |
2115 | ||
27b6a1fa JL |
2116 | #endif |
2117 | ||
11054881 KH |
2118 | int |
2119 | hw_breakpoint_used_count() | |
2120 | { | |
2121 | register struct breakpoint *b; | |
2122 | int i = 0; | |
2123 | ||
2124 | ALL_BREAKPOINTS (b) | |
2125 | { | |
2126 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
2127 | i++; | |
2128 | } | |
2129 | ||
2130 | return i; | |
2131 | } | |
2132 | ||
2133 | int | |
2134 | hw_watchpoint_used_count(type, other_type_used) | |
2135 | enum bptype type; | |
2136 | int *other_type_used; | |
2137 | { | |
2138 | register struct breakpoint *b; | |
2139 | int i = 0; | |
2140 | ||
2141 | *other_type_used = 0; | |
2142 | ALL_BREAKPOINTS (b) | |
2143 | { | |
2144 | if (b->enable == enabled) | |
2145 | { | |
2146 | if (b->type == type) i++; | |
2147 | else if ((b->type == bp_hardware_watchpoint || | |
2148 | b->type == bp_read_watchpoint || | |
2149 | b->type == bp_access_watchpoint) | |
2150 | && b->enable == enabled) | |
2151 | *other_type_used = 1; | |
2152 | } | |
2153 | } | |
2154 | return i; | |
2155 | } | |
2156 | ||
30875e1c SG |
2157 | /* Call this after hitting the longjmp() breakpoint. Use this to set a new |
2158 | breakpoint at the target of the jmp_buf. | |
80ba48f5 SG |
2159 | |
2160 | FIXME - This ought to be done by setting a temporary breakpoint that gets | |
2161 | deleted automatically... | |
30875e1c SG |
2162 | */ |
2163 | ||
2164 | void | |
2165 | set_longjmp_resume_breakpoint(pc, frame) | |
2166 | CORE_ADDR pc; | |
706dc3ce | 2167 | struct frame_info *frame; |
30875e1c | 2168 | { |
80ba48f5 SG |
2169 | register struct breakpoint *b; |
2170 | ||
2171 | ALL_BREAKPOINTS (b) | |
2172 | if (b->type == bp_longjmp_resume) | |
2173 | { | |
2174 | b->address = pc; | |
2175 | b->enable = enabled; | |
2176 | if (frame != NULL) | |
706dc3ce | 2177 | b->frame = frame->frame; |
80ba48f5 SG |
2178 | else |
2179 | b->frame = 0; | |
9b280a7f | 2180 | check_duplicates (b->address); |
80ba48f5 SG |
2181 | return; |
2182 | } | |
30875e1c SG |
2183 | } |
2184 | ||
bd5635a1 RP |
2185 | /* Set a breakpoint that will evaporate an end of command |
2186 | at address specified by SAL. | |
2187 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
2188 | ||
30875e1c SG |
2189 | struct breakpoint * |
2190 | set_momentary_breakpoint (sal, frame, type) | |
bd5635a1 | 2191 | struct symtab_and_line sal; |
706dc3ce | 2192 | struct frame_info *frame; |
30875e1c | 2193 | enum bptype type; |
bd5635a1 RP |
2194 | { |
2195 | register struct breakpoint *b; | |
2196 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
2197 | b->type = type; |
2198 | b->enable = enabled; | |
2199 | b->disposition = donttouch; | |
706dc3ce | 2200 | b->frame = (frame ? frame->frame : 0); |
2b576293 C |
2201 | |
2202 | /* If we're debugging a multi-threaded program, then we | |
2203 | want momentary breakpoints to be active in only a | |
2204 | single thread of control. */ | |
2205 | if (in_thread_list (inferior_pid)) | |
2206 | b->thread = pid_to_thread_id (inferior_pid); | |
2207 | ||
30875e1c | 2208 | return b; |
bd5635a1 RP |
2209 | } |
2210 | ||
bd5635a1 RP |
2211 | \f |
2212 | /* Tell the user we have just set a breakpoint B. */ | |
9f577285 | 2213 | |
bd5635a1 RP |
2214 | static void |
2215 | mention (b) | |
2216 | struct breakpoint *b; | |
2217 | { | |
9f577285 SS |
2218 | int say_where = 0; |
2219 | ||
d2a85f11 JMD |
2220 | /* FIXME: This is misplaced; mention() is called by things (like hitting a |
2221 | watchpoint) other than breakpoint creation. It should be possible to | |
2222 | clean this up and at the same time replace the random calls to | |
2223 | breakpoint_changed with this hook, as has already been done for | |
2224 | delete_breakpoint_hook and so on. */ | |
754e5da2 SG |
2225 | if (create_breakpoint_hook) |
2226 | create_breakpoint_hook (b); | |
2227 | ||
30875e1c | 2228 | switch (b->type) |
bd5635a1 | 2229 | { |
30875e1c | 2230 | case bp_watchpoint: |
bd5635a1 | 2231 | printf_filtered ("Watchpoint %d: ", b->number); |
199b2450 | 2232 | print_expression (b->exp, gdb_stdout); |
30875e1c | 2233 | break; |
999dd04b JL |
2234 | case bp_hardware_watchpoint: |
2235 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
2236 | print_expression (b->exp, gdb_stdout); | |
2237 | break; | |
11054881 KH |
2238 | case bp_read_watchpoint: |
2239 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
2240 | print_expression (b->exp, gdb_stdout); | |
2241 | break; | |
2242 | case bp_access_watchpoint: | |
2243 | printf_filtered ("Hardware access(read/write) watchpoint %d: ",b->number); | |
2244 | print_expression (b->exp, gdb_stdout); | |
2245 | break; | |
30875e1c | 2246 | case bp_breakpoint: |
9f577285 SS |
2247 | printf_filtered ("Breakpoint %d", b->number); |
2248 | say_where = 1; | |
51b57ded | 2249 | break; |
11054881 | 2250 | case bp_hardware_breakpoint: |
9f577285 SS |
2251 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
2252 | say_where = 1; | |
11054881 | 2253 | break; |
51b57ded FF |
2254 | case bp_until: |
2255 | case bp_finish: | |
2256 | case bp_longjmp: | |
2257 | case bp_longjmp_resume: | |
fee933f1 | 2258 | case bp_step_resume: |
bcc37718 | 2259 | case bp_through_sigtramp: |
199b2450 | 2260 | case bp_call_dummy: |
999dd04b | 2261 | case bp_watchpoint_scope: |
fa3764e2 | 2262 | case bp_shlib_event: |
51b57ded | 2263 | break; |
bd5635a1 | 2264 | } |
9f577285 SS |
2265 | if (say_where) |
2266 | { | |
2267 | if (addressprint || b->source_file == NULL) | |
2268 | { | |
2269 | printf_filtered (" at "); | |
2270 | print_address_numeric (b->address, 1, gdb_stdout); | |
2271 | } | |
2272 | if (b->source_file) | |
2273 | printf_filtered (": file %s, line %d.", | |
2274 | b->source_file, b->line_number); | |
2275 | } | |
bd5635a1 RP |
2276 | printf_filtered ("\n"); |
2277 | } | |
2278 | ||
bd5635a1 RP |
2279 | \f |
2280 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
11054881 KH |
2281 | flag: first bit : 0 non-temporary, 1 temporary. |
2282 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
bd5635a1 RP |
2283 | |
2284 | static void | |
11054881 | 2285 | break_command_1 (arg, flag, from_tty) |
bd5635a1 | 2286 | char *arg; |
11054881 | 2287 | int flag, from_tty; |
bd5635a1 | 2288 | { |
11054881 | 2289 | int tempflag, hardwareflag; |
bd5635a1 RP |
2290 | struct symtabs_and_lines sals; |
2291 | struct symtab_and_line sal; | |
2292 | register struct expression *cond = 0; | |
2293 | register struct breakpoint *b; | |
2294 | ||
2295 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
2296 | char *cond_start = NULL; | |
fee933f1 | 2297 | char *cond_end = NULL; |
bd5635a1 RP |
2298 | /* Pointers in arg to the start, and one past the end, |
2299 | of the address part. */ | |
2300 | char *addr_start = NULL; | |
fee933f1 | 2301 | char *addr_end = NULL; |
d889f6b7 | 2302 | struct cleanup *old_chain; |
fee933f1 | 2303 | struct cleanup *canonical_strings_chain = NULL; |
d889f6b7 | 2304 | char **canonical = (char **)NULL; |
bd5635a1 | 2305 | int i; |
199b2450 | 2306 | int thread; |
bd5635a1 | 2307 | |
e8bf33c4 JK |
2308 | hardwareflag = flag & BP_HARDWAREFLAG; |
2309 | tempflag = flag & BP_TEMPFLAG; | |
11054881 | 2310 | |
bd5635a1 RP |
2311 | sals.sals = NULL; |
2312 | sals.nelts = 0; | |
2313 | ||
2314 | sal.line = sal.pc = sal.end = 0; | |
2315 | sal.symtab = 0; | |
2316 | ||
2317 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
2318 | ||
2319 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2320 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2321 | { | |
2322 | if (default_breakpoint_valid) | |
2323 | { | |
2324 | sals.sals = (struct symtab_and_line *) | |
2325 | xmalloc (sizeof (struct symtab_and_line)); | |
2326 | sal.pc = default_breakpoint_address; | |
2327 | sal.line = default_breakpoint_line; | |
2328 | sal.symtab = default_breakpoint_symtab; | |
2329 | sals.sals[0] = sal; | |
2330 | sals.nelts = 1; | |
2331 | } | |
2332 | else | |
2333 | error ("No default breakpoint address now."); | |
2334 | } | |
2335 | else | |
2336 | { | |
2337 | addr_start = arg; | |
2338 | ||
2339 | /* Force almost all breakpoints to be in terms of the | |
2340 | current_source_symtab (which is decode_line_1's default). This | |
2341 | should produce the results we want almost all of the time while | |
2342 | leaving default_breakpoint_* alone. */ | |
2343 | if (default_breakpoint_valid | |
2344 | && (!current_source_symtab | |
2345 | || (arg && (*arg == '+' || *arg == '-')))) | |
2346 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2347 | default_breakpoint_line, &canonical); |
bd5635a1 | 2348 | else |
d889f6b7 | 2349 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical); |
bd5635a1 RP |
2350 | |
2351 | addr_end = arg; | |
2352 | } | |
2353 | ||
2354 | if (! sals.nelts) | |
2355 | return; | |
2356 | ||
d889f6b7 JK |
2357 | /* Make sure that all storage allocated in decode_line_1 gets freed in case |
2358 | the following `for' loop errors out. */ | |
2359 | old_chain = make_cleanup (free, sals.sals); | |
2360 | if (canonical != (char **)NULL) | |
2361 | { | |
2362 | make_cleanup (free, canonical); | |
2363 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
2364 | for (i = 0; i < sals.nelts; i++) | |
2365 | { | |
2366 | if (canonical[i] != NULL) | |
2367 | make_cleanup (free, canonical[i]); | |
2368 | } | |
2369 | } | |
2370 | ||
199b2450 TL |
2371 | thread = -1; /* No specific thread yet */ |
2372 | ||
30875e1c SG |
2373 | /* Resolve all line numbers to PC's, and verify that conditions |
2374 | can be parsed, before setting any breakpoints. */ | |
bd5635a1 RP |
2375 | for (i = 0; i < sals.nelts; i++) |
2376 | { | |
199b2450 TL |
2377 | char *tok, *end_tok; |
2378 | int toklen; | |
2379 | ||
30875e1c | 2380 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 | 2381 | |
199b2450 TL |
2382 | tok = arg; |
2383 | ||
2384 | while (tok && *tok) | |
bd5635a1 | 2385 | { |
199b2450 TL |
2386 | while (*tok == ' ' || *tok == '\t') |
2387 | tok++; | |
2388 | ||
2389 | end_tok = tok; | |
2390 | ||
2391 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2392 | end_tok++; | |
2393 | ||
2394 | toklen = end_tok - tok; | |
2395 | ||
2396 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2397 | { | |
2398 | tok = cond_start = end_tok + 1; | |
2399 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
2400 | cond_end = tok; | |
2401 | } | |
2402 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
bd5635a1 | 2403 | { |
199b2450 TL |
2404 | char *tmptok; |
2405 | ||
2406 | tok = end_tok + 1; | |
2407 | tmptok = tok; | |
2408 | thread = strtol (tok, &tok, 0); | |
2409 | if (tok == tmptok) | |
2410 | error ("Junk after thread keyword."); | |
2411 | if (!valid_thread_id (thread)) | |
2412 | error ("Unknown thread %d\n", thread); | |
bd5635a1 RP |
2413 | } |
2414 | else | |
2415 | error ("Junk at end of arguments."); | |
2416 | } | |
bd5635a1 | 2417 | } |
11054881 KH |
2418 | if (hardwareflag) |
2419 | { | |
557f3a0e SS |
2420 | int i, target_resources_ok; |
2421 | ||
2422 | i = hw_breakpoint_used_count (); | |
2423 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
2424 | bp_hardware_breakpoint, i + sals.nelts, 0); | |
11054881 KH |
2425 | if (target_resources_ok == 0) |
2426 | error ("No hardware breakpoint support in the target."); | |
2427 | else if (target_resources_ok < 0) | |
2428 | error ("Hardware breakpoints used exceeds limit."); | |
2429 | } | |
bd5635a1 | 2430 | |
d889f6b7 JK |
2431 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
2432 | if (canonical != (char **)NULL) | |
2433 | discard_cleanups (canonical_strings_chain); | |
2434 | ||
30875e1c | 2435 | /* Now set all the breakpoints. */ |
bd5635a1 RP |
2436 | for (i = 0; i < sals.nelts; i++) |
2437 | { | |
2438 | sal = sals.sals[i]; | |
2439 | ||
2440 | if (from_tty) | |
2441 | describe_other_breakpoints (sal.pc); | |
2442 | ||
2443 | b = set_raw_breakpoint (sal); | |
2444 | set_breakpoint_count (breakpoint_count + 1); | |
2445 | b->number = breakpoint_count; | |
11054881 | 2446 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; |
bd5635a1 | 2447 | b->cond = cond; |
199b2450 | 2448 | b->thread = thread; |
0a97f6c4 | 2449 | |
d889f6b7 JK |
2450 | /* If a canonical line spec is needed use that instead of the |
2451 | command string. */ | |
2452 | if (canonical != (char **)NULL && canonical[i] != NULL) | |
2453 | b->addr_string = canonical[i]; | |
2454 | else if (addr_start) | |
bd5635a1 RP |
2455 | b->addr_string = savestring (addr_start, addr_end - addr_start); |
2456 | if (cond_start) | |
2457 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2458 | ||
30875e1c | 2459 | b->enable = enabled; |
e8bf33c4 | 2460 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 RP |
2461 | |
2462 | mention (b); | |
2463 | } | |
2464 | ||
2465 | if (sals.nelts > 1) | |
2466 | { | |
833e0d94 JK |
2467 | printf_filtered ("Multiple breakpoints were set.\n"); |
2468 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 2469 | } |
d889f6b7 | 2470 | do_cleanups (old_chain); |
bd5635a1 RP |
2471 | } |
2472 | ||
30875e1c SG |
2473 | /* Helper function for break_command_1 and disassemble_command. */ |
2474 | ||
2475 | void | |
2476 | resolve_sal_pc (sal) | |
2477 | struct symtab_and_line *sal; | |
2478 | { | |
2479 | CORE_ADDR pc; | |
2480 | ||
2481 | if (sal->pc == 0 && sal->symtab != 0) | |
2482 | { | |
2483 | pc = find_line_pc (sal->symtab, sal->line); | |
2484 | if (pc == 0) | |
2485 | error ("No line %d in file \"%s\".", | |
2486 | sal->line, sal->symtab->filename); | |
2487 | sal->pc = pc; | |
2488 | } | |
2489 | } | |
2490 | ||
bd5635a1 RP |
2491 | void |
2492 | break_command (arg, from_tty) | |
2493 | char *arg; | |
2494 | int from_tty; | |
2495 | { | |
2496 | break_command_1 (arg, 0, from_tty); | |
2497 | } | |
2498 | ||
2499 | static void | |
2500 | tbreak_command (arg, from_tty) | |
2501 | char *arg; | |
2502 | int from_tty; | |
2503 | { | |
11054881 KH |
2504 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
2505 | } | |
2506 | ||
2507 | static void | |
2508 | hbreak_command (arg, from_tty) | |
2509 | char *arg; | |
2510 | int from_tty; | |
2511 | { | |
2512 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
2513 | } | |
2514 | ||
2515 | static void | |
2516 | thbreak_command (arg, from_tty) | |
2517 | char *arg; | |
2518 | int from_tty; | |
2519 | { | |
2520 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
bd5635a1 RP |
2521 | } |
2522 | ||
bdbd5f50 | 2523 | /* ARGSUSED */ |
11054881 KH |
2524 | /* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) |
2525 | */ | |
bd5635a1 | 2526 | static void |
11054881 | 2527 | watch_command_1 (arg, accessflag, from_tty) |
bd5635a1 | 2528 | char *arg; |
11054881 | 2529 | int accessflag; |
bd5635a1 RP |
2530 | int from_tty; |
2531 | { | |
2532 | struct breakpoint *b; | |
2533 | struct symtab_and_line sal; | |
f266e564 JK |
2534 | struct expression *exp; |
2535 | struct block *exp_valid_block; | |
11054881 | 2536 | struct value *val, *mark; |
706dc3ce | 2537 | struct frame_info *frame, *prev_frame; |
11054881 KH |
2538 | char *exp_start = NULL; |
2539 | char *exp_end = NULL; | |
2540 | char *tok, *end_tok; | |
2541 | int toklen; | |
2542 | char *cond_start = NULL; | |
2543 | char *cond_end = NULL; | |
2544 | struct expression *cond = NULL; | |
2545 | int i, other_type_used, target_resources_ok; | |
2546 | enum bptype bp_type; | |
2547 | int mem_cnt = 0; | |
bd5635a1 | 2548 | |
30875e1c | 2549 | sal.pc = 0; |
bd5635a1 RP |
2550 | sal.symtab = NULL; |
2551 | sal.line = 0; | |
2552 | ||
f266e564 JK |
2553 | /* Parse arguments. */ |
2554 | innermost_block = NULL; | |
11054881 KH |
2555 | exp_start = arg; |
2556 | exp = parse_exp_1 (&arg, 0, 0); | |
2557 | exp_end = arg; | |
f266e564 | 2558 | exp_valid_block = innermost_block; |
11054881 | 2559 | mark = value_mark (); |
f266e564 JK |
2560 | val = evaluate_expression (exp); |
2561 | release_value (val); | |
2d313932 JK |
2562 | if (VALUE_LAZY (val)) |
2563 | value_fetch_lazy (val); | |
f266e564 | 2564 | |
11054881 KH |
2565 | tok = arg; |
2566 | while (*tok == ' ' || *tok == '\t') | |
2567 | tok++; | |
2568 | end_tok = tok; | |
2569 | ||
2570 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2571 | end_tok++; | |
2572 | ||
2573 | toklen = end_tok - tok; | |
2574 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2575 | { | |
2576 | tok = cond_start = end_tok + 1; | |
2577 | cond = parse_exp_1 (&tok, 0, 0); | |
2578 | cond_end = tok; | |
2579 | } | |
2580 | if (*tok) | |
2581 | error("Junk at end of command."); | |
2582 | ||
2583 | if (accessflag == 1) bp_type = bp_read_watchpoint; | |
2584 | else if (accessflag == 2) bp_type = bp_access_watchpoint; | |
2585 | else bp_type = bp_hardware_watchpoint; | |
2586 | ||
2587 | mem_cnt = can_use_hardware_watchpoint (val); | |
2588 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
2589 | error ("Expression cannot be implemented with read/access watchpoint."); | |
2590 | if (mem_cnt != 0) { | |
2591 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
2592 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
2593 | bp_type, i + mem_cnt, other_type_used); | |
2594 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) | |
2595 | error ("Target does not have this type of hardware watchpoint support."); | |
2596 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) | |
2597 | error ("Target resources have been allocated for other types of watchpoints."); | |
2598 | } | |
2599 | ||
f266e564 | 2600 | /* Now set up the breakpoint. */ |
bd5635a1 RP |
2601 | b = set_raw_breakpoint (sal); |
2602 | set_breakpoint_count (breakpoint_count + 1); | |
2603 | b->number = breakpoint_count; | |
30875e1c | 2604 | b->disposition = donttouch; |
f266e564 JK |
2605 | b->exp = exp; |
2606 | b->exp_valid_block = exp_valid_block; | |
11054881 | 2607 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
f266e564 | 2608 | b->val = val; |
11054881 KH |
2609 | b->cond = cond; |
2610 | if (cond_start) | |
2611 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2612 | else | |
2613 | b->cond_string = 0; | |
2614 | ||
999dd04b JL |
2615 | frame = block_innermost_frame (exp_valid_block); |
2616 | if (frame) | |
2617 | { | |
2618 | prev_frame = get_prev_frame (frame); | |
706dc3ce | 2619 | b->watchpoint_frame = frame->frame; |
999dd04b JL |
2620 | } |
2621 | else | |
9e8db445 | 2622 | b->watchpoint_frame = (CORE_ADDR)0; |
999dd04b | 2623 | |
11054881 KH |
2624 | if (mem_cnt && target_resources_ok > 0) |
2625 | b->type = bp_type; | |
999dd04b JL |
2626 | else |
2627 | b->type = bp_watchpoint; | |
2628 | ||
2629 | /* If the expression is "local", then set up a "watchpoint scope" | |
2630 | breakpoint at the point where we've left the scope of the watchpoint | |
2631 | expression. */ | |
2632 | if (innermost_block) | |
2633 | { | |
2634 | struct breakpoint *scope_breakpoint; | |
2635 | struct symtab_and_line scope_sal; | |
2636 | ||
2637 | if (prev_frame) | |
2638 | { | |
2639 | scope_sal.pc = get_frame_pc (prev_frame); | |
2640 | scope_sal.symtab = NULL; | |
2641 | scope_sal.line = 0; | |
2642 | ||
2643 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
2644 | set_breakpoint_count (breakpoint_count + 1); | |
2645 | scope_breakpoint->number = breakpoint_count; | |
2646 | ||
2647 | scope_breakpoint->type = bp_watchpoint_scope; | |
2648 | scope_breakpoint->enable = enabled; | |
2649 | ||
2650 | /* Automatically delete the breakpoint when it hits. */ | |
e8bf33c4 | 2651 | scope_breakpoint->disposition = del; |
999dd04b JL |
2652 | |
2653 | /* Only break in the proper frame (help with recursion). */ | |
2654 | scope_breakpoint->frame = prev_frame->frame; | |
2655 | ||
2656 | /* Set the address at which we will stop. */ | |
2657 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
2658 | ||
2659 | /* The scope breakpoint is related to the watchpoint. We | |
2660 | will need to act on them together. */ | |
2661 | b->related_breakpoint = scope_breakpoint; | |
2662 | } | |
2663 | } | |
11054881 | 2664 | value_free_to_mark (mark); |
bd5635a1 RP |
2665 | mention (b); |
2666 | } | |
999dd04b | 2667 | |
11054881 KH |
2668 | /* Return count of locations need to be watched and can be handled |
2669 | in hardware. If the watchpoint can not be handled | |
999dd04b JL |
2670 | in hardware return zero. */ |
2671 | ||
2672 | static int | |
11054881 KH |
2673 | can_use_hardware_watchpoint (v) |
2674 | struct value *v; | |
999dd04b | 2675 | { |
11054881 | 2676 | int found_memory_cnt = 0; |
999dd04b JL |
2677 | |
2678 | /* Make sure all the intermediate values are in memory. Also make sure | |
2679 | we found at least one memory expression. Guards against watch 0x12345, | |
2680 | which is meaningless, but could cause errors if one tries to insert a | |
2681 | hardware watchpoint for the constant expression. */ | |
11054881 | 2682 | for ( ; v; v = v->next) |
999dd04b | 2683 | { |
11054881 KH |
2684 | if (v->lval == lval_memory) |
2685 | { | |
2686 | if (TYPE_LENGTH (VALUE_TYPE (v)) <= REGISTER_SIZE) | |
2687 | found_memory_cnt++; | |
2688 | } | |
2689 | else if (v->lval != not_lval && v->modifiable == 0) | |
999dd04b | 2690 | return 0; |
999dd04b JL |
2691 | } |
2692 | ||
2693 | /* The expression itself looks suitable for using a hardware | |
2694 | watchpoint, but give the target machine a chance to reject it. */ | |
11054881 KH |
2695 | return found_memory_cnt; |
2696 | } | |
2697 | ||
2698 | static void watch_command (arg, from_tty) | |
2699 | char *arg; | |
2700 | int from_tty; | |
2701 | { | |
2702 | watch_command_1 (arg, 0, from_tty); | |
2703 | } | |
2704 | ||
2705 | static void rwatch_command (arg, from_tty) | |
2706 | char *arg; | |
2707 | int from_tty; | |
2708 | { | |
2709 | watch_command_1 (arg, 1, from_tty); | |
2710 | } | |
2711 | ||
2712 | static void awatch_command (arg, from_tty) | |
2713 | char *arg; | |
2714 | int from_tty; | |
2715 | { | |
2716 | watch_command_1 (arg, 2, from_tty); | |
999dd04b JL |
2717 | } |
2718 | ||
bd5635a1 | 2719 | \f |
706dc3ce JL |
2720 | /* Helper routine for the until_command routine in infcmd.c. Here |
2721 | because it uses the mechanisms of breakpoints. */ | |
2722 | ||
bdbd5f50 | 2723 | /* ARGSUSED */ |
bd5635a1 RP |
2724 | void |
2725 | until_break_command (arg, from_tty) | |
2726 | char *arg; | |
2727 | int from_tty; | |
2728 | { | |
2729 | struct symtabs_and_lines sals; | |
2730 | struct symtab_and_line sal; | |
706dc3ce | 2731 | struct frame_info *prev_frame = get_prev_frame (selected_frame); |
30875e1c SG |
2732 | struct breakpoint *breakpoint; |
2733 | struct cleanup *old_chain; | |
bd5635a1 RP |
2734 | |
2735 | clear_proceed_status (); | |
2736 | ||
2737 | /* Set a breakpoint where the user wants it and at return from | |
2738 | this function */ | |
2739 | ||
2740 | if (default_breakpoint_valid) | |
2741 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2742 | default_breakpoint_line, (char ***)NULL); |
bd5635a1 | 2743 | else |
d889f6b7 | 2744 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
2745 | |
2746 | if (sals.nelts != 1) | |
2747 | error ("Couldn't get information on specified line."); | |
2748 | ||
2749 | sal = sals.sals[0]; | |
c8950965 | 2750 | free ((PTR)sals.sals); /* malloc'd, so freed */ |
bd5635a1 RP |
2751 | |
2752 | if (*arg) | |
2753 | error ("Junk at end of arguments."); | |
2754 | ||
30875e1c | 2755 | resolve_sal_pc (&sal); |
bd5635a1 | 2756 | |
30875e1c | 2757 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
bd5635a1 | 2758 | |
30875e1c SG |
2759 | old_chain = make_cleanup(delete_breakpoint, breakpoint); |
2760 | ||
bd5635a1 RP |
2761 | /* Keep within the current frame */ |
2762 | ||
2763 | if (prev_frame) | |
2764 | { | |
706dc3ce JL |
2765 | sal = find_pc_line (prev_frame->pc, 0); |
2766 | sal.pc = prev_frame->pc; | |
30875e1c SG |
2767 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); |
2768 | make_cleanup(delete_breakpoint, breakpoint); | |
bd5635a1 RP |
2769 | } |
2770 | ||
d7e7e851 | 2771 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
30875e1c | 2772 | do_cleanups(old_chain); |
bd5635a1 RP |
2773 | } |
2774 | \f | |
bdbd5f50 JG |
2775 | #if 0 |
2776 | /* These aren't used; I don't konw what they were for. */ | |
bd5635a1 RP |
2777 | /* Set a breakpoint at the catch clause for NAME. */ |
2778 | static int | |
2779 | catch_breakpoint (name) | |
2780 | char *name; | |
2781 | { | |
2782 | } | |
2783 | ||
2784 | static int | |
2785 | disable_catch_breakpoint () | |
2786 | { | |
2787 | } | |
2788 | ||
2789 | static int | |
2790 | delete_catch_breakpoint () | |
2791 | { | |
2792 | } | |
2793 | ||
2794 | static int | |
2795 | enable_catch_breakpoint () | |
2796 | { | |
2797 | } | |
bdbd5f50 | 2798 | #endif /* 0 */ |
bd5635a1 RP |
2799 | |
2800 | struct sal_chain | |
2801 | { | |
2802 | struct sal_chain *next; | |
2803 | struct symtab_and_line sal; | |
2804 | }; | |
2805 | ||
bdbd5f50 JG |
2806 | #if 0 |
2807 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 RP |
2808 | /* For each catch clause identified in ARGS, run FUNCTION |
2809 | with that clause as an argument. */ | |
2810 | static struct symtabs_and_lines | |
2811 | map_catch_names (args, function) | |
2812 | char *args; | |
2813 | int (*function)(); | |
2814 | { | |
2815 | register char *p = args; | |
2816 | register char *p1; | |
2817 | struct symtabs_and_lines sals; | |
bdbd5f50 | 2818 | #if 0 |
bd5635a1 | 2819 | struct sal_chain *sal_chain = 0; |
bdbd5f50 | 2820 | #endif |
bd5635a1 RP |
2821 | |
2822 | if (p == 0) | |
2823 | error_no_arg ("one or more catch names"); | |
2824 | ||
2825 | sals.nelts = 0; | |
2826 | sals.sals = NULL; | |
2827 | ||
2828 | while (*p) | |
2829 | { | |
2830 | p1 = p; | |
2831 | /* Don't swallow conditional part. */ | |
2832 | if (p1[0] == 'i' && p1[1] == 'f' | |
2833 | && (p1[2] == ' ' || p1[2] == '\t')) | |
2834 | break; | |
2835 | ||
2836 | if (isalpha (*p1)) | |
2837 | { | |
2838 | p1++; | |
2839 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
2840 | p1++; | |
2841 | } | |
2842 | ||
2843 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
2844 | error ("Arguments must be catch names."); | |
2845 | ||
2846 | *p1 = 0; | |
2847 | #if 0 | |
2848 | if (function (p)) | |
2849 | { | |
2850 | struct sal_chain *next | |
2851 | = (struct sal_chain *)alloca (sizeof (struct sal_chain)); | |
2852 | next->next = sal_chain; | |
2853 | next->sal = get_catch_sal (p); | |
2854 | sal_chain = next; | |
2855 | goto win; | |
2856 | } | |
2857 | #endif | |
199b2450 | 2858 | printf_unfiltered ("No catch clause for exception %s.\n", p); |
bdbd5f50 | 2859 | #if 0 |
bd5635a1 | 2860 | win: |
bdbd5f50 | 2861 | #endif |
bd5635a1 RP |
2862 | p = p1; |
2863 | while (*p == ' ' || *p == '\t') p++; | |
2864 | } | |
2865 | } | |
bdbd5f50 | 2866 | #endif /* 0 */ |
bd5635a1 RP |
2867 | |
2868 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
2869 | ||
2870 | static struct symtabs_and_lines | |
2871 | get_catch_sals (this_level_only) | |
2872 | int this_level_only; | |
2873 | { | |
bd5635a1 | 2874 | register struct blockvector *bl; |
777bef06 | 2875 | register struct block *block; |
bd5635a1 | 2876 | int index, have_default = 0; |
777bef06 | 2877 | CORE_ADDR pc; |
bd5635a1 RP |
2878 | struct symtabs_and_lines sals; |
2879 | struct sal_chain *sal_chain = 0; | |
2880 | char *blocks_searched; | |
2881 | ||
777bef06 JK |
2882 | /* Not sure whether an error message is always the correct response, |
2883 | but it's better than a core dump. */ | |
2884 | if (selected_frame == NULL) | |
2885 | error ("No selected frame."); | |
2886 | block = get_frame_block (selected_frame); | |
706dc3ce | 2887 | pc = selected_frame->pc; |
777bef06 | 2888 | |
bd5635a1 RP |
2889 | sals.nelts = 0; |
2890 | sals.sals = NULL; | |
2891 | ||
2892 | if (block == 0) | |
2893 | error ("No symbol table info available.\n"); | |
2894 | ||
2895 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
2896 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4ed3a9ea | 2897 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
2898 | |
2899 | while (block != 0) | |
2900 | { | |
2901 | CORE_ADDR end = BLOCK_END (block) - 4; | |
2902 | int last_index; | |
2903 | ||
2904 | if (bl != blockvector_for_pc (end, &index)) | |
2905 | error ("blockvector blotch"); | |
2906 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
2907 | error ("blockvector botch"); | |
2908 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
2909 | index += 1; | |
2910 | ||
2911 | /* Don't print out blocks that have gone by. */ | |
2912 | while (index < last_index | |
2913 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
2914 | index++; | |
2915 | ||
2916 | while (index < last_index | |
2917 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
2918 | { | |
2919 | if (blocks_searched[index] == 0) | |
2920 | { | |
2921 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
2922 | int nsyms; | |
2923 | register int i; | |
2924 | register struct symbol *sym; | |
2925 | ||
2926 | nsyms = BLOCK_NSYMS (b); | |
2927 | ||
2928 | for (i = 0; i < nsyms; i++) | |
2929 | { | |
2930 | sym = BLOCK_SYM (b, i); | |
2d313932 | 2931 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
2932 | { |
2933 | if (have_default) | |
2934 | continue; | |
2935 | have_default = 1; | |
2936 | } | |
2937 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
2938 | { | |
2939 | struct sal_chain *next = (struct sal_chain *) | |
2940 | alloca (sizeof (struct sal_chain)); | |
2941 | next->next = sal_chain; | |
2942 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
2943 | sal_chain = next; | |
2944 | } | |
2945 | } | |
2946 | blocks_searched[index] = 1; | |
2947 | } | |
2948 | index++; | |
2949 | } | |
2950 | if (have_default) | |
2951 | break; | |
2952 | if (sal_chain && this_level_only) | |
2953 | break; | |
2954 | ||
2955 | /* After handling the function's top-level block, stop. | |
2956 | Don't continue to its superblock, the block of | |
2957 | per-file symbols. */ | |
2958 | if (BLOCK_FUNCTION (block)) | |
2959 | break; | |
2960 | block = BLOCK_SUPERBLOCK (block); | |
2961 | } | |
2962 | ||
2963 | if (sal_chain) | |
2964 | { | |
2965 | struct sal_chain *tmp_chain; | |
2966 | ||
2967 | /* Count the number of entries. */ | |
2968 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
2969 | tmp_chain = tmp_chain->next) | |
2970 | index++; | |
2971 | ||
2972 | sals.nelts = index; | |
2973 | sals.sals = (struct symtab_and_line *) | |
2974 | xmalloc (index * sizeof (struct symtab_and_line)); | |
2975 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
2976 | sals.sals[index] = sal_chain->sal; | |
2977 | } | |
2978 | ||
2979 | return sals; | |
2980 | } | |
2981 | ||
2982 | /* Commands to deal with catching exceptions. */ | |
2983 | ||
30875e1c | 2984 | static void |
bd5635a1 RP |
2985 | catch_command_1 (arg, tempflag, from_tty) |
2986 | char *arg; | |
2987 | int tempflag; | |
2988 | int from_tty; | |
2989 | { | |
2990 | /* First, translate ARG into something we can deal with in terms | |
2991 | of breakpoints. */ | |
2992 | ||
2993 | struct symtabs_and_lines sals; | |
2994 | struct symtab_and_line sal; | |
2995 | register struct expression *cond = 0; | |
2996 | register struct breakpoint *b; | |
2997 | char *save_arg; | |
2998 | int i; | |
bd5635a1 RP |
2999 | |
3000 | sal.line = sal.pc = sal.end = 0; | |
3001 | sal.symtab = 0; | |
3002 | ||
3003 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
3004 | are breakpointed. */ | |
3005 | ||
3006 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
3007 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
3008 | { | |
3009 | /* Grab all active catch clauses. */ | |
3010 | sals = get_catch_sals (0); | |
3011 | } | |
3012 | else | |
3013 | { | |
3014 | /* Grab selected catch clauses. */ | |
fe675038 | 3015 | error ("catch NAME not implemented"); |
bdbd5f50 JG |
3016 | #if 0 |
3017 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 | 3018 | sals = map_catch_names (arg, catch_breakpoint); |
bdbd5f50 | 3019 | #endif |
bd5635a1 RP |
3020 | } |
3021 | ||
3022 | if (! sals.nelts) | |
3023 | return; | |
3024 | ||
3025 | save_arg = arg; | |
3026 | for (i = 0; i < sals.nelts; i++) | |
3027 | { | |
30875e1c | 3028 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
3029 | |
3030 | while (arg && *arg) | |
3031 | { | |
3032 | if (arg[0] == 'i' && arg[1] == 'f' | |
3033 | && (arg[2] == ' ' || arg[2] == '\t')) | |
30875e1c SG |
3034 | cond = parse_exp_1 ((arg += 2, &arg), |
3035 | block_for_pc (sals.sals[i].pc), 0); | |
bd5635a1 RP |
3036 | else |
3037 | error ("Junk at end of arguments."); | |
3038 | } | |
3039 | arg = save_arg; | |
bd5635a1 RP |
3040 | } |
3041 | ||
3042 | for (i = 0; i < sals.nelts; i++) | |
3043 | { | |
3044 | sal = sals.sals[i]; | |
3045 | ||
3046 | if (from_tty) | |
3047 | describe_other_breakpoints (sal.pc); | |
3048 | ||
3049 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
3050 | set_breakpoint_count (breakpoint_count + 1); |
3051 | b->number = breakpoint_count; | |
3052 | b->type = bp_breakpoint; | |
bd5635a1 | 3053 | b->cond = cond; |
30875e1c | 3054 | b->enable = enabled; |
e8bf33c4 | 3055 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 | 3056 | |
d889f6b7 | 3057 | mention (b); |
bd5635a1 RP |
3058 | } |
3059 | ||
3060 | if (sals.nelts > 1) | |
3061 | { | |
199b2450 TL |
3062 | printf_unfiltered ("Multiple breakpoints were set.\n"); |
3063 | printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 3064 | } |
c8950965 | 3065 | free ((PTR)sals.sals); |
bd5635a1 RP |
3066 | } |
3067 | ||
e8bf33c4 JK |
3068 | /* Used by the gui, could be made a worker for other things. */ |
3069 | ||
3070 | struct breakpoint * | |
3071 | set_breakpoint_sal (sal) | |
3072 | struct symtab_and_line sal; | |
3073 | { | |
3074 | struct breakpoint *b; | |
3075 | b = set_raw_breakpoint (sal); | |
3076 | set_breakpoint_count (breakpoint_count + 1); | |
3077 | b->number = breakpoint_count; | |
3078 | b->type = bp_breakpoint; | |
3079 | b->cond = 0; | |
3080 | b->thread = -1; | |
3081 | return b; | |
3082 | } | |
3083 | ||
bdbd5f50 JG |
3084 | #if 0 |
3085 | /* These aren't used; I don't know what they were for. */ | |
bd5635a1 RP |
3086 | /* Disable breakpoints on all catch clauses described in ARGS. */ |
3087 | static void | |
3088 | disable_catch (args) | |
3089 | char *args; | |
3090 | { | |
3091 | /* Map the disable command to catch clauses described in ARGS. */ | |
3092 | } | |
3093 | ||
3094 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
3095 | static void | |
3096 | enable_catch (args) | |
3097 | char *args; | |
3098 | { | |
3099 | /* Map the disable command to catch clauses described in ARGS. */ | |
3100 | } | |
3101 | ||
3102 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
3103 | static void | |
3104 | delete_catch (args) | |
3105 | char *args; | |
3106 | { | |
3107 | /* Map the delete command to catch clauses described in ARGS. */ | |
3108 | } | |
bdbd5f50 | 3109 | #endif /* 0 */ |
bd5635a1 RP |
3110 | |
3111 | static void | |
3112 | catch_command (arg, from_tty) | |
3113 | char *arg; | |
3114 | int from_tty; | |
3115 | { | |
3116 | catch_command_1 (arg, 0, from_tty); | |
3117 | } | |
3118 | \f | |
3119 | static void | |
3120 | clear_command (arg, from_tty) | |
3121 | char *arg; | |
3122 | int from_tty; | |
3123 | { | |
3124 | register struct breakpoint *b, *b1; | |
3125 | struct symtabs_and_lines sals; | |
3126 | struct symtab_and_line sal; | |
3127 | register struct breakpoint *found; | |
3128 | int i; | |
3129 | ||
3130 | if (arg) | |
3131 | { | |
3132 | sals = decode_line_spec (arg, 1); | |
3133 | } | |
3134 | else | |
3135 | { | |
3136 | sals.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); | |
3137 | sal.line = default_breakpoint_line; | |
3138 | sal.symtab = default_breakpoint_symtab; | |
3139 | sal.pc = 0; | |
3140 | if (sal.symtab == 0) | |
3141 | error ("No source file specified."); | |
3142 | ||
3143 | sals.sals[0] = sal; | |
3144 | sals.nelts = 1; | |
3145 | } | |
3146 | ||
3147 | for (i = 0; i < sals.nelts; i++) | |
3148 | { | |
3149 | /* If exact pc given, clear bpts at that pc. | |
3150 | But if sal.pc is zero, clear all bpts on specified line. */ | |
3151 | sal = sals.sals[i]; | |
3152 | found = (struct breakpoint *) 0; | |
3153 | while (breakpoint_chain | |
d889f6b7 JK |
3154 | && (sal.pc |
3155 | ? breakpoint_chain->address == sal.pc | |
3156 | : (breakpoint_chain->source_file != NULL | |
3157 | && sal.symtab != NULL | |
3158 | && STREQ (breakpoint_chain->source_file, | |
3159 | sal.symtab->filename) | |
bd5635a1 RP |
3160 | && breakpoint_chain->line_number == sal.line))) |
3161 | { | |
3162 | b1 = breakpoint_chain; | |
3163 | breakpoint_chain = b1->next; | |
3164 | b1->next = found; | |
3165 | found = b1; | |
3166 | } | |
3167 | ||
3168 | ALL_BREAKPOINTS (b) | |
3169 | while (b->next | |
30875e1c | 3170 | && b->next->type != bp_watchpoint |
999dd04b | 3171 | && b->next->type != bp_hardware_watchpoint |
11054881 KH |
3172 | && b->next->type != bp_read_watchpoint |
3173 | && b->next->type != bp_access_watchpoint | |
d889f6b7 JK |
3174 | && (sal.pc |
3175 | ? b->next->address == sal.pc | |
3176 | : (b->next->source_file != NULL | |
3177 | && sal.symtab != NULL | |
3178 | && STREQ (b->next->source_file, sal.symtab->filename) | |
bd5635a1 RP |
3179 | && b->next->line_number == sal.line))) |
3180 | { | |
3181 | b1 = b->next; | |
3182 | b->next = b1->next; | |
3183 | b1->next = found; | |
3184 | found = b1; | |
3185 | } | |
3186 | ||
3187 | if (found == 0) | |
3188 | { | |
3189 | if (arg) | |
3190 | error ("No breakpoint at %s.", arg); | |
3191 | else | |
3192 | error ("No breakpoint at this line."); | |
3193 | } | |
3194 | ||
3195 | if (found->next) from_tty = 1; /* Always report if deleted more than one */ | |
199b2450 | 3196 | if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); |
6c803036 | 3197 | breakpoints_changed (); |
bd5635a1 RP |
3198 | while (found) |
3199 | { | |
199b2450 | 3200 | if (from_tty) printf_unfiltered ("%d ", found->number); |
bd5635a1 RP |
3201 | b1 = found->next; |
3202 | delete_breakpoint (found); | |
3203 | found = b1; | |
3204 | } | |
199b2450 | 3205 | if (from_tty) putchar_unfiltered ('\n'); |
bd5635a1 | 3206 | } |
c8950965 | 3207 | free ((PTR)sals.sals); |
bd5635a1 RP |
3208 | } |
3209 | \f | |
e51481f9 JL |
3210 | /* Delete breakpoint in BS if they are `delete' breakpoints and |
3211 | all breakpoints that are marked for deletion, whether hit or not. | |
bd5635a1 RP |
3212 | This is called after any breakpoint is hit, or after errors. */ |
3213 | ||
3214 | void | |
3215 | breakpoint_auto_delete (bs) | |
3216 | bpstat bs; | |
3217 | { | |
e51481f9 JL |
3218 | struct breakpoint *b, *temp; |
3219 | ||
bd5635a1 | 3220 | for (; bs; bs = bs->next) |
e8bf33c4 | 3221 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
cef4c2e7 | 3222 | && bs->stop) |
bd5635a1 | 3223 | delete_breakpoint (bs->breakpoint_at); |
e51481f9 JL |
3224 | |
3225 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3226 | { | |
3227 | if (b->disposition == del_at_next_stop) | |
3228 | delete_breakpoint (b); | |
3229 | } | |
bd5635a1 RP |
3230 | } |
3231 | ||
3232 | /* Delete a breakpoint and clean up all traces of it in the data structures. */ | |
3233 | ||
30875e1c | 3234 | void |
bd5635a1 RP |
3235 | delete_breakpoint (bpt) |
3236 | struct breakpoint *bpt; | |
3237 | { | |
3238 | register struct breakpoint *b; | |
3239 | register bpstat bs; | |
3240 | ||
754e5da2 SG |
3241 | if (delete_breakpoint_hook) |
3242 | delete_breakpoint_hook (bpt); | |
3243 | ||
bd5635a1 | 3244 | if (bpt->inserted) |
999dd04b JL |
3245 | remove_breakpoint (bpt); |
3246 | ||
bd5635a1 RP |
3247 | if (breakpoint_chain == bpt) |
3248 | breakpoint_chain = bpt->next; | |
3249 | ||
3250 | ALL_BREAKPOINTS (b) | |
3251 | if (b->next == bpt) | |
3252 | { | |
3253 | b->next = bpt->next; | |
3254 | break; | |
3255 | } | |
3256 | ||
3257 | check_duplicates (bpt->address); | |
fe675038 JK |
3258 | /* If this breakpoint was inserted, and there is another breakpoint |
3259 | at the same address, we need to insert the other breakpoint. */ | |
999dd04b | 3260 | if (bpt->inserted |
11054881 KH |
3261 | && bpt->type != bp_hardware_watchpoint |
3262 | && bpt->type != bp_read_watchpoint | |
3263 | && bpt->type != bp_access_watchpoint) | |
fe675038 JK |
3264 | { |
3265 | ALL_BREAKPOINTS (b) | |
ebad9e90 JK |
3266 | if (b->address == bpt->address |
3267 | && !b->duplicate | |
fa3764e2 JL |
3268 | && b->enable != disabled |
3269 | && b->enable != shlib_disabled) | |
fe675038 JK |
3270 | { |
3271 | int val; | |
3272 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
3273 | if (val != 0) | |
3274 | { | |
05052b63 | 3275 | target_terminal_ours_for_output (); |
199b2450 | 3276 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
fe675038 JK |
3277 | memory_error (val, b->address); /* which bombs us out */ |
3278 | } | |
3279 | else | |
3280 | b->inserted = 1; | |
3281 | } | |
3282 | } | |
bd5635a1 RP |
3283 | |
3284 | free_command_lines (&bpt->commands); | |
3285 | if (bpt->cond) | |
d889f6b7 | 3286 | free (bpt->cond); |
bd5635a1 | 3287 | if (bpt->cond_string != NULL) |
d889f6b7 | 3288 | free (bpt->cond_string); |
bd5635a1 | 3289 | if (bpt->addr_string != NULL) |
d889f6b7 | 3290 | free (bpt->addr_string); |
39ce6829 PS |
3291 | if (bpt->exp != NULL) |
3292 | free (bpt->exp); | |
0eaaa46a | 3293 | if (bpt->exp_string != NULL) |
d889f6b7 | 3294 | free (bpt->exp_string); |
39ce6829 PS |
3295 | if (bpt->val != NULL) |
3296 | value_free (bpt->val); | |
d889f6b7 JK |
3297 | if (bpt->source_file != NULL) |
3298 | free (bpt->source_file); | |
bd5635a1 | 3299 | |
bd5635a1 | 3300 | /* Be sure no bpstat's are pointing at it after it's been freed. */ |
05052b63 JK |
3301 | /* FIXME, how can we find all bpstat's? |
3302 | We just check stop_bpstat for now. */ | |
bd5635a1 RP |
3303 | for (bs = stop_bpstat; bs; bs = bs->next) |
3304 | if (bs->breakpoint_at == bpt) | |
3305 | bs->breakpoint_at = NULL; | |
c8950965 | 3306 | free ((PTR)bpt); |
bd5635a1 RP |
3307 | } |
3308 | ||
bd5635a1 RP |
3309 | static void |
3310 | delete_command (arg, from_tty) | |
3311 | char *arg; | |
3312 | int from_tty; | |
3313 | { | |
3314 | ||
3315 | if (arg == 0) | |
3316 | { | |
3317 | /* Ask user only if there are some breakpoints to delete. */ | |
3318 | if (!from_tty | |
e8bf33c4 | 3319 | || (breakpoint_chain && query ("Delete all breakpoints? "))) |
bd5635a1 RP |
3320 | { |
3321 | /* No arg; clear all breakpoints. */ | |
3322 | while (breakpoint_chain) | |
3323 | delete_breakpoint (breakpoint_chain); | |
3324 | } | |
3325 | } | |
3326 | else | |
3327 | map_breakpoint_numbers (arg, delete_breakpoint); | |
3328 | } | |
3329 | ||
bdbd5f50 JG |
3330 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
3331 | The value we return ends up being the return value from catch_errors. | |
3332 | Unused in this case. */ | |
3333 | ||
3334 | static int | |
bd5635a1 | 3335 | breakpoint_re_set_one (bint) |
bdbd5f50 | 3336 | char *bint; |
bd5635a1 RP |
3337 | { |
3338 | struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */ | |
11054881 | 3339 | struct value *mark; |
bd5635a1 RP |
3340 | int i; |
3341 | struct symtabs_and_lines sals; | |
bd5635a1 | 3342 | char *s; |
30875e1c | 3343 | enum enable save_enable; |
bd5635a1 | 3344 | |
80ba48f5 | 3345 | switch (b->type) |
bd5635a1 | 3346 | { |
80ba48f5 | 3347 | case bp_breakpoint: |
11054881 | 3348 | case bp_hardware_breakpoint: |
80ba48f5 SG |
3349 | if (b->addr_string == NULL) |
3350 | { | |
3351 | /* Anything without a string can't be re-set. */ | |
3352 | delete_breakpoint (b); | |
3353 | return 0; | |
3354 | } | |
30875e1c SG |
3355 | /* In case we have a problem, disable this breakpoint. We'll restore |
3356 | its status if we succeed. */ | |
3357 | save_enable = b->enable; | |
3358 | b->enable = disabled; | |
3359 | ||
706dc3ce JL |
3360 | set_language (b->language); |
3361 | input_radix = b->input_radix; | |
bd5635a1 | 3362 | s = b->addr_string; |
d889f6b7 | 3363 | sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
3364 | for (i = 0; i < sals.nelts; i++) |
3365 | { | |
30875e1c | 3366 | resolve_sal_pc (&sals.sals[i]); |
fee933f1 RP |
3367 | |
3368 | /* Reparse conditions, they might contain references to the | |
3369 | old symtab. */ | |
3370 | if (b->cond_string != NULL) | |
3371 | { | |
3372 | s = b->cond_string; | |
3373 | if (b->cond) | |
3374 | free ((PTR)b->cond); | |
3375 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); | |
3376 | } | |
3377 | ||
3378 | /* We need to re-set the breakpoint if the address changes...*/ | |
d889f6b7 | 3379 | if (b->address != sals.sals[i].pc |
fee933f1 RP |
3380 | /* ...or new and old breakpoints both have source files, and |
3381 | the source file name or the line number changes... */ | |
d889f6b7 JK |
3382 | || (b->source_file != NULL |
3383 | && sals.sals[i].symtab != NULL | |
3384 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
3385 | || b->line_number != sals.sals[i].line) | |
fee933f1 RP |
3386 | ) |
3387 | /* ...or we switch between having a source file and not having | |
3388 | one. */ | |
3389 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
3390 | ) | |
bd5635a1 | 3391 | { |
d889f6b7 JK |
3392 | if (b->source_file != NULL) |
3393 | free (b->source_file); | |
3394 | if (sals.sals[i].symtab == NULL) | |
3395 | b->source_file = NULL; | |
3396 | else | |
3397 | b->source_file = | |
3398 | savestring (sals.sals[i].symtab->filename, | |
3399 | strlen (sals.sals[i].symtab->filename)); | |
8537ba60 SG |
3400 | b->line_number = sals.sals[i].line; |
3401 | b->address = sals.sals[i].pc; | |
bd5635a1 | 3402 | |
8537ba60 | 3403 | check_duplicates (b->address); |
bd5635a1 | 3404 | |
8537ba60 | 3405 | mention (b); |
6c803036 JK |
3406 | |
3407 | /* Might be better to do this just once per breakpoint_re_set, | |
3408 | rather than once for every breakpoint. */ | |
3409 | breakpoints_changed (); | |
8537ba60 | 3410 | } |
30875e1c | 3411 | b->enable = save_enable; /* Restore it, this worked. */ |
bd5635a1 | 3412 | } |
c8950965 | 3413 | free ((PTR)sals.sals); |
80ba48f5 | 3414 | break; |
2d313932 | 3415 | |
80ba48f5 | 3416 | case bp_watchpoint: |
999dd04b | 3417 | case bp_hardware_watchpoint: |
11054881 KH |
3418 | case bp_read_watchpoint: |
3419 | case bp_access_watchpoint: | |
0eaaa46a | 3420 | innermost_block = NULL; |
0a97f6c4 JK |
3421 | /* The issue arises of what context to evaluate this in. The same |
3422 | one as when it was set, but what does that mean when symbols have | |
3423 | been re-read? We could save the filename and functionname, but | |
3424 | if the context is more local than that, the best we could do would | |
3425 | be something like how many levels deep and which index at that | |
3426 | particular level, but that's going to be less stable than filenames | |
3427 | or functionnames. */ | |
3428 | /* So for now, just use a global context. */ | |
39ce6829 PS |
3429 | if (b->exp) |
3430 | free ((PTR)b->exp); | |
0eaaa46a JK |
3431 | b->exp = parse_expression (b->exp_string); |
3432 | b->exp_valid_block = innermost_block; | |
11054881 | 3433 | mark = value_mark (); |
39ce6829 PS |
3434 | if (b->val) |
3435 | value_free (b->val); | |
0eaaa46a JK |
3436 | b->val = evaluate_expression (b->exp); |
3437 | release_value (b->val); | |
3438 | if (VALUE_LAZY (b->val)) | |
3439 | value_fetch_lazy (b->val); | |
3440 | ||
2d313932 JK |
3441 | if (b->cond_string != NULL) |
3442 | { | |
3443 | s = b->cond_string; | |
39ce6829 PS |
3444 | if (b->cond) |
3445 | free ((PTR)b->cond); | |
2d313932 JK |
3446 | b->cond = parse_exp_1 (&s, (struct block *)0, 0); |
3447 | } | |
cabd4da6 JK |
3448 | if (b->enable == enabled) |
3449 | mention (b); | |
11054881 | 3450 | value_free_to_mark (mark); |
80ba48f5 | 3451 | break; |
2d313932 | 3452 | |
80ba48f5 SG |
3453 | default: |
3454 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
2d313932 | 3455 | /* fall through */ |
fa3764e2 JL |
3456 | /* Delete longjmp breakpoints, they will be reset later by |
3457 | breakpoint_re_set. */ | |
80ba48f5 SG |
3458 | case bp_longjmp: |
3459 | case bp_longjmp_resume: | |
3460 | delete_breakpoint (b); | |
3461 | break; | |
27b6a1fa JL |
3462 | |
3463 | /* This breakpoint is special, it's set up when the inferior | |
3464 | starts and we really don't want to touch it. */ | |
3465 | case bp_shlib_event: | |
fa3764e2 JL |
3466 | |
3467 | /* Keep temporary breakpoints, which can be encountered when we step | |
3468 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
3469 | Otherwise these should have been blown away via the cleanup chain | |
3470 | or by breakpoint_init_inferior when we rerun the executable. */ | |
3471 | case bp_until: | |
3472 | case bp_finish: | |
3473 | case bp_watchpoint_scope: | |
3474 | case bp_call_dummy: | |
3475 | case bp_step_resume: | |
27b6a1fa | 3476 | break; |
bd5635a1 | 3477 | } |
80ba48f5 | 3478 | |
bdbd5f50 | 3479 | return 0; |
bd5635a1 RP |
3480 | } |
3481 | ||
3482 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
3483 | void | |
3484 | breakpoint_re_set () | |
3485 | { | |
cba0d141 | 3486 | struct breakpoint *b, *temp; |
706dc3ce JL |
3487 | enum language save_language; |
3488 | int save_input_radix; | |
30875e1c SG |
3489 | static char message1[] = "Error in re-setting breakpoint %d:\n"; |
3490 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 | 3491 | |
706dc3ce JL |
3492 | save_language = current_language->la_language; |
3493 | save_input_radix = input_radix; | |
cba0d141 | 3494 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 3495 | { |
2d313932 | 3496 | sprintf (message, message1, b->number); /* Format possible error msg */ |
fe675038 JK |
3497 | catch_errors (breakpoint_re_set_one, (char *) b, message, |
3498 | RETURN_MASK_ALL); | |
bd5635a1 | 3499 | } |
706dc3ce JL |
3500 | set_language (save_language); |
3501 | input_radix = save_input_radix; | |
bd5635a1 | 3502 | |
cd10c7e3 SG |
3503 | #ifdef GET_LONGJMP_TARGET |
3504 | create_longjmp_breakpoint ("longjmp"); | |
3505 | create_longjmp_breakpoint ("_longjmp"); | |
3506 | create_longjmp_breakpoint ("siglongjmp"); | |
3507 | create_longjmp_breakpoint (NULL); | |
3508 | #endif | |
80ba48f5 | 3509 | |
1eeba686 | 3510 | #if 0 |
0fe1522a | 3511 | /* Took this out (temporarily at least), since it produces an extra |
1eeba686 | 3512 | blank line at startup. This messes up the gdbtests. -PB */ |
bd5635a1 RP |
3513 | /* Blank line to finish off all those mention() messages we just printed. */ |
3514 | printf_filtered ("\n"); | |
1eeba686 | 3515 | #endif |
bd5635a1 RP |
3516 | } |
3517 | \f | |
3518 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
3519 | If from_tty is nonzero, it prints a message to that effect, | |
3520 | which ends with a period (no newline). */ | |
3521 | ||
3522 | void | |
3523 | set_ignore_count (bptnum, count, from_tty) | |
3524 | int bptnum, count, from_tty; | |
3525 | { | |
3526 | register struct breakpoint *b; | |
3527 | ||
3528 | if (count < 0) | |
3529 | count = 0; | |
3530 | ||
3531 | ALL_BREAKPOINTS (b) | |
3532 | if (b->number == bptnum) | |
3533 | { | |
3534 | b->ignore_count = count; | |
3535 | if (!from_tty) | |
3536 | return; | |
3537 | else if (count == 0) | |
423e9664 SG |
3538 | printf_filtered ("Will stop next time breakpoint %d is reached.", |
3539 | bptnum); | |
bd5635a1 | 3540 | else if (count == 1) |
423e9664 SG |
3541 | printf_filtered ("Will ignore next crossing of breakpoint %d.", |
3542 | bptnum); | |
bd5635a1 | 3543 | else |
423e9664 | 3544 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", |
bd5635a1 | 3545 | count, bptnum); |
6c803036 | 3546 | breakpoints_changed (); |
bd5635a1 RP |
3547 | return; |
3548 | } | |
3549 | ||
3550 | error ("No breakpoint number %d.", bptnum); | |
3551 | } | |
3552 | ||
3553 | /* Clear the ignore counts of all breakpoints. */ | |
3554 | void | |
3555 | breakpoint_clear_ignore_counts () | |
3556 | { | |
3557 | struct breakpoint *b; | |
3558 | ||
3559 | ALL_BREAKPOINTS (b) | |
3560 | b->ignore_count = 0; | |
3561 | } | |
3562 | ||
3563 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
3564 | ||
3565 | static void | |
3566 | ignore_command (args, from_tty) | |
3567 | char *args; | |
3568 | int from_tty; | |
3569 | { | |
3570 | char *p = args; | |
3571 | register int num; | |
3572 | ||
3573 | if (p == 0) | |
3574 | error_no_arg ("a breakpoint number"); | |
3575 | ||
3576 | num = get_number (&p); | |
3577 | ||
3578 | if (*p == 0) | |
3579 | error ("Second argument (specified ignore-count) is missing."); | |
3580 | ||
bdbd5f50 JG |
3581 | set_ignore_count (num, |
3582 | longest_to_int (value_as_long (parse_and_eval (p))), | |
3583 | from_tty); | |
423e9664 | 3584 | printf_filtered ("\n"); |
6c803036 | 3585 | breakpoints_changed (); |
bd5635a1 RP |
3586 | } |
3587 | \f | |
3588 | /* Call FUNCTION on each of the breakpoints | |
3589 | whose numbers are given in ARGS. */ | |
3590 | ||
3591 | static void | |
3592 | map_breakpoint_numbers (args, function) | |
3593 | char *args; | |
30875e1c | 3594 | void (*function) PARAMS ((struct breakpoint *)); |
bd5635a1 RP |
3595 | { |
3596 | register char *p = args; | |
3597 | char *p1; | |
3598 | register int num; | |
3599 | register struct breakpoint *b; | |
3600 | ||
3601 | if (p == 0) | |
3602 | error_no_arg ("one or more breakpoint numbers"); | |
3603 | ||
3604 | while (*p) | |
3605 | { | |
3606 | p1 = p; | |
3607 | ||
3608 | num = get_number (&p1); | |
3609 | ||
3610 | ALL_BREAKPOINTS (b) | |
3611 | if (b->number == num) | |
3612 | { | |
999dd04b | 3613 | struct breakpoint *related_breakpoint = b->related_breakpoint; |
bd5635a1 | 3614 | function (b); |
999dd04b JL |
3615 | if (related_breakpoint) |
3616 | function (related_breakpoint); | |
bd5635a1 RP |
3617 | goto win; |
3618 | } | |
199b2450 | 3619 | printf_unfiltered ("No breakpoint number %d.\n", num); |
bd5635a1 RP |
3620 | win: |
3621 | p = p1; | |
3622 | } | |
3623 | } | |
3624 | ||
e8bf33c4 | 3625 | void |
bd5635a1 RP |
3626 | disable_breakpoint (bpt) |
3627 | struct breakpoint *bpt; | |
3628 | { | |
999dd04b JL |
3629 | /* Never disable a watchpoint scope breakpoint; we want to |
3630 | hit them when we leave scope so we can delete both the | |
3631 | watchpoint and its scope breakpoint at that time. */ | |
3632 | if (bpt->type == bp_watchpoint_scope) | |
3633 | return; | |
3634 | ||
bd5635a1 RP |
3635 | bpt->enable = disabled; |
3636 | ||
bd5635a1 | 3637 | check_duplicates (bpt->address); |
e8bf33c4 JK |
3638 | |
3639 | if (modify_breakpoint_hook) | |
3640 | modify_breakpoint_hook (bpt); | |
bd5635a1 RP |
3641 | } |
3642 | ||
bdbd5f50 | 3643 | /* ARGSUSED */ |
bd5635a1 RP |
3644 | static void |
3645 | disable_command (args, from_tty) | |
3646 | char *args; | |
3647 | int from_tty; | |
3648 | { | |
3649 | register struct breakpoint *bpt; | |
3650 | if (args == 0) | |
3651 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3652 | switch (bpt->type) |
3653 | { | |
3654 | case bp_breakpoint: | |
11054881 KH |
3655 | case bp_hardware_breakpoint: |
3656 | case bp_watchpoint: | |
3657 | case bp_hardware_watchpoint: | |
3658 | case bp_read_watchpoint: | |
3659 | case bp_access_watchpoint: | |
423e9664 SG |
3660 | disable_breakpoint (bpt); |
3661 | default: | |
3662 | continue; | |
3663 | } | |
bd5635a1 RP |
3664 | else |
3665 | map_breakpoint_numbers (args, disable_breakpoint); | |
3666 | } | |
3667 | ||
3668 | static void | |
3f37b696 | 3669 | do_enable_breakpoint (bpt, disposition) |
bd5635a1 | 3670 | struct breakpoint *bpt; |
3f37b696 | 3671 | enum bpdisp disposition; |
bd5635a1 | 3672 | { |
706dc3ce | 3673 | struct frame_info *save_selected_frame = NULL; |
11054881 KH |
3674 | int save_selected_frame_level = -1; |
3675 | int target_resources_ok, other_type_used; | |
3676 | struct value *mark; | |
3677 | ||
3f37b696 FF |
3678 | if (bpt->type == bp_hardware_breakpoint) |
3679 | { | |
11054881 KH |
3680 | int i; |
3681 | i = hw_breakpoint_used_count(); | |
3682 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3683 | bp_hardware_breakpoint, i+1, 0); | |
3684 | if (target_resources_ok == 0) | |
3685 | error ("No hardware breakpoint support in the target."); | |
3686 | else if (target_resources_ok < 0) | |
3687 | error ("Hardware breakpoints used exceeds limit."); | |
3688 | } | |
3689 | ||
30875e1c | 3690 | bpt->enable = enabled; |
3f37b696 | 3691 | bpt->disposition = disposition; |
bd5635a1 | 3692 | check_duplicates (bpt->address); |
6c803036 | 3693 | breakpoints_changed (); |
11054881 KH |
3694 | |
3695 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3696 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
3697 | { | |
3698 | if (bpt->exp_valid_block != NULL) | |
3699 | { | |
706dc3ce JL |
3700 | struct frame_info *fr = |
3701 | find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
11054881 KH |
3702 | if (fr == NULL) |
3703 | { | |
3704 | printf_filtered ("\ | |
3705 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
3706 | is valid is not currently in scope.\n", bpt->number); | |
3707 | bpt->enable = disabled; | |
3708 | return; | |
3709 | } | |
3710 | ||
3711 | save_selected_frame = selected_frame; | |
3712 | save_selected_frame_level = selected_frame_level; | |
3713 | select_frame (fr, -1); | |
3714 | } | |
3715 | ||
3716 | value_free (bpt->val); | |
3717 | mark = value_mark (); | |
3718 | bpt->val = evaluate_expression (bpt->exp); | |
3719 | release_value (bpt->val); | |
3720 | if (VALUE_LAZY (bpt->val)) | |
3721 | value_fetch_lazy (bpt->val); | |
3722 | ||
3723 | if (bpt->type == bp_hardware_watchpoint || | |
3724 | bpt->type == bp_read_watchpoint || | |
3725 | bpt->type == bp_access_watchpoint) | |
3726 | { | |
3727 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3f37b696 FF |
3728 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); |
3729 | ||
11054881 | 3730 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( |
3f37b696 | 3731 | bpt->type, i + mem_cnt, other_type_used); |
11054881 KH |
3732 | /* we can consider of type is bp_hardware_watchpoint, convert to |
3733 | bp_watchpoint in the following condition */ | |
3734 | if (target_resources_ok < 0) | |
3735 | { | |
3736 | printf_filtered("\ | |
3737 | Cannot enable watchpoint %d because target watch resources\n\ | |
3738 | have been allocated for other watchpoints.\n", bpt->number); | |
3f37b696 FF |
3739 | bpt->enable = disabled; |
3740 | value_free_to_mark (mark); | |
3741 | return; | |
11054881 KH |
3742 | } |
3743 | } | |
3744 | ||
3745 | if (save_selected_frame_level >= 0) | |
3746 | select_frame (save_selected_frame, save_selected_frame_level); | |
3747 | value_free_to_mark (mark); | |
3748 | } | |
3f37b696 FF |
3749 | if (modify_breakpoint_hook) |
3750 | modify_breakpoint_hook (bpt); | |
3751 | } | |
3752 | ||
3753 | void | |
3754 | enable_breakpoint (bpt) | |
3755 | struct breakpoint *bpt; | |
3756 | { | |
3757 | do_enable_breakpoint (bpt, donttouch); | |
3758 | } | |
3759 | ||
3760 | /* The enable command enables the specified breakpoints (or all defined | |
3761 | breakpoints) so they once again become (or continue to be) effective | |
3762 | in stopping the inferior. */ | |
3763 | ||
3764 | /* ARGSUSED */ | |
3765 | static void | |
3766 | enable_command (args, from_tty) | |
3767 | char *args; | |
3768 | int from_tty; | |
3769 | { | |
3770 | register struct breakpoint *bpt; | |
3771 | if (args == 0) | |
3772 | ALL_BREAKPOINTS (bpt) | |
3773 | switch (bpt->type) | |
3774 | { | |
3775 | case bp_breakpoint: | |
3776 | case bp_hardware_breakpoint: | |
3777 | case bp_watchpoint: | |
3778 | case bp_hardware_watchpoint: | |
3779 | case bp_read_watchpoint: | |
3780 | case bp_access_watchpoint: | |
3781 | enable_breakpoint (bpt); | |
3782 | default: | |
3783 | continue; | |
3784 | } | |
3785 | else | |
3786 | map_breakpoint_numbers (args, enable_breakpoint); | |
3787 | } | |
3788 | ||
3789 | static void | |
3790 | enable_once_breakpoint (bpt) | |
3791 | struct breakpoint *bpt; | |
3792 | { | |
3793 | do_enable_breakpoint (bpt, disable); | |
bd5635a1 RP |
3794 | } |
3795 | ||
bdbd5f50 | 3796 | /* ARGSUSED */ |
bd5635a1 RP |
3797 | static void |
3798 | enable_once_command (args, from_tty) | |
3799 | char *args; | |
3800 | int from_tty; | |
3801 | { | |
3802 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
3803 | } | |
3804 | ||
3805 | static void | |
3806 | enable_delete_breakpoint (bpt) | |
3807 | struct breakpoint *bpt; | |
3808 | { | |
3f37b696 | 3809 | do_enable_breakpoint (bpt, del); |
bd5635a1 RP |
3810 | } |
3811 | ||
bdbd5f50 | 3812 | /* ARGSUSED */ |
bd5635a1 RP |
3813 | static void |
3814 | enable_delete_command (args, from_tty) | |
3815 | char *args; | |
3816 | int from_tty; | |
3817 | { | |
3818 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
3819 | } | |
3820 | \f | |
706dc3ce JL |
3821 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
3822 | ||
bd5635a1 RP |
3823 | struct symtabs_and_lines |
3824 | decode_line_spec_1 (string, funfirstline) | |
3825 | char *string; | |
3826 | int funfirstline; | |
3827 | { | |
3828 | struct symtabs_and_lines sals; | |
3829 | if (string == 0) | |
3830 | error ("Empty line specification."); | |
3831 | if (default_breakpoint_valid) | |
3832 | sals = decode_line_1 (&string, funfirstline, | |
d889f6b7 JK |
3833 | default_breakpoint_symtab, default_breakpoint_line, |
3834 | (char ***)NULL); | |
bd5635a1 | 3835 | else |
d889f6b7 JK |
3836 | sals = decode_line_1 (&string, funfirstline, |
3837 | (struct symtab *)NULL, 0, (char ***)NULL); | |
bd5635a1 RP |
3838 | if (*string) |
3839 | error ("Junk at end of line specification: %s", string); | |
3840 | return sals; | |
3841 | } | |
3842 | \f | |
bd5635a1 RP |
3843 | void |
3844 | _initialize_breakpoint () | |
3845 | { | |
3846 | breakpoint_chain = 0; | |
3847 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
3848 | before a breakpoint is set. */ | |
3849 | breakpoint_count = 0; | |
3850 | ||
3851 | add_com ("ignore", class_breakpoint, ignore_command, | |
557f3a0e SS |
3852 | "Set ignore-count of breakpoint number N to COUNT.\n\ |
3853 | Usage is `ignore N COUNT'."); | |
bd5635a1 RP |
3854 | |
3855 | add_com ("commands", class_breakpoint, commands_command, | |
3856 | "Set commands to be executed when a breakpoint is hit.\n\ | |
3857 | Give breakpoint number as argument after \"commands\".\n\ | |
3858 | With no argument, the targeted breakpoint is the last one set.\n\ | |
3859 | The commands themselves follow starting on the next line.\n\ | |
3860 | Type a line containing \"end\" to indicate the end of them.\n\ | |
3861 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
3862 | then no output is printed when it is hit, except what the commands print."); | |
3863 | ||
3864 | add_com ("condition", class_breakpoint, condition_command, | |
3865 | "Specify breakpoint number N to break only if COND is true.\n\ | |
557f3a0e SS |
3866 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
3867 | expression to be evaluated whenever breakpoint N is reached. "); | |
bd5635a1 RP |
3868 | |
3869 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
3870 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c4de6b30 JK |
3871 | Like \"break\" except the breakpoint is only temporary,\n\ |
3872 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
3873 | by using \"enable delete\" on the breakpoint number."); | |
bd5635a1 | 3874 | |
11054881 KH |
3875 | add_com ("hbreak", class_breakpoint, hbreak_command, |
3876 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3877 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
3878 | some target hardware may not have this support."); | |
3879 | ||
3880 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
3881 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3882 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
3883 | so it will be deleted when hit."); | |
3884 | ||
bd5635a1 RP |
3885 | add_prefix_cmd ("enable", class_breakpoint, enable_command, |
3886 | "Enable some breakpoints.\n\ | |
3887 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3888 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
3889 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3890 | With a subcommand you can enable temporarily.", | |
3891 | &enablelist, "enable ", 1, &cmdlist); | |
3892 | ||
3893 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
3894 | "Enable some breakpoints.\n\ | |
3895 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3896 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3897 | May be abbreviated to simply \"enable\".\n", | |
3898 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); | |
3899 | ||
3900 | add_cmd ("once", no_class, enable_once_command, | |
3901 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3902 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3903 | &enablebreaklist); |
3904 | ||
3905 | add_cmd ("delete", no_class, enable_delete_command, | |
3906 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3907 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3908 | &enablebreaklist); | |
3909 | ||
3910 | add_cmd ("delete", no_class, enable_delete_command, | |
3911 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3912 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3913 | &enablelist); | |
3914 | ||
3915 | add_cmd ("once", no_class, enable_once_command, | |
3916 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3917 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3918 | &enablelist); |
3919 | ||
3920 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
3921 | "Disable some breakpoints.\n\ | |
3922 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3923 | To disable all breakpoints, give no argument.\n\ | |
3924 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
3925 | &disablelist, "disable ", 1, &cmdlist); | |
3926 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
3927 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
3928 | ||
3929 | add_cmd ("breakpoints", class_alias, disable_command, | |
3930 | "Disable some breakpoints.\n\ | |
3931 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3932 | To disable all breakpoints, give no argument.\n\ | |
3933 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
3934 | This command may be abbreviated \"disable\".", | |
3935 | &disablelist); | |
3936 | ||
3937 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
3938 | "Delete some breakpoints or auto-display expressions.\n\ | |
3939 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3940 | To delete all breakpoints, give no argument.\n\ | |
3941 | \n\ | |
3942 | Also a prefix command for deletion of other GDB objects.\n\ | |
3943 | The \"unset\" command is also an alias for \"delete\".", | |
3944 | &deletelist, "delete ", 1, &cmdlist); | |
3945 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
bd5635a1 RP |
3946 | |
3947 | add_cmd ("breakpoints", class_alias, delete_command, | |
3948 | "Delete some breakpoints or auto-display expressions.\n\ | |
3949 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3950 | To delete all breakpoints, give no argument.\n\ | |
3951 | This command may be abbreviated \"delete\".", | |
3952 | &deletelist); | |
3953 | ||
3954 | add_com ("clear", class_breakpoint, clear_command, | |
706dc3ce | 3955 | concat ("Clear breakpoint at specified line or function.\n\ |
bd5635a1 RP |
3956 | Argument may be line number, function name, or \"*\" and an address.\n\ |
3957 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
3958 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
706dc3ce JL |
3959 | If an address is specified, breakpoints at that address are cleared.\n\n", |
3960 | "With no argument, clears all breakpoints in the line that the selected frame\n\ | |
bd5635a1 RP |
3961 | is executing in.\n\ |
3962 | \n\ | |
706dc3ce | 3963 | See also the \"delete\" command which clears breakpoints by number.", NULL)); |
bd5635a1 RP |
3964 | |
3965 | add_com ("break", class_breakpoint, break_command, | |
706dc3ce | 3966 | concat ("Set breakpoint at specified line or function.\n\ |
bd5635a1 RP |
3967 | Argument may be line number, function name, or \"*\" and an address.\n\ |
3968 | If line number is specified, break at start of code for that line.\n\ | |
3969 | If function is specified, break at start of code for that function.\n\ | |
706dc3ce JL |
3970 | If an address is specified, break at that exact address.\n", |
3971 | "With no arg, uses current execution address of selected stack frame.\n\ | |
bd5635a1 RP |
3972 | This is useful for breaking on return to a stack frame.\n\ |
3973 | \n\ | |
3974 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
3975 | \n\ | |
706dc3ce | 3976 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); |
bd5635a1 RP |
3977 | add_com_alias ("b", "break", class_run, 1); |
3978 | add_com_alias ("br", "break", class_run, 1); | |
3979 | add_com_alias ("bre", "break", class_run, 1); | |
3980 | add_com_alias ("brea", "break", class_run, 1); | |
3981 | ||
3982 | add_info ("breakpoints", breakpoints_info, | |
706dc3ce | 3983 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 3984 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
3985 | \tbreakpoint - normal breakpoint\n\ |
3986 | \twatchpoint - watchpoint\n\ | |
80ba48f5 SG |
3987 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
3988 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
3989 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
3990 | address and file/line number respectively.\n\n", |
3991 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
80ba48f5 SG |
3992 | are set to the address of the last breakpoint listed.\n\n\ |
3993 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 3994 | breakpoint set.", NULL)); |
80ba48f5 | 3995 | |
9b280a7f JG |
3996 | #if MAINTENANCE_CMDS |
3997 | ||
3998 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, | |
706dc3ce | 3999 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 4000 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
4001 | \tbreakpoint - normal breakpoint\n\ |
4002 | \twatchpoint - watchpoint\n\ | |
4003 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
4004 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
4005 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
706dc3ce JL |
4006 | \tfinish - internal breakpoint used by the \"finish\" command\n", |
4007 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
80ba48f5 SG |
4008 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
4009 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
4010 | address and file/line number respectively.\n\n", |
4011 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
bd5635a1 RP |
4012 | are set to the address of the last breakpoint listed.\n\n\ |
4013 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 4014 | breakpoint set.", NULL), |
9b280a7f JG |
4015 | &maintenanceinfolist); |
4016 | ||
4017 | #endif /* MAINTENANCE_CMDS */ | |
bd5635a1 RP |
4018 | |
4019 | add_com ("catch", class_breakpoint, catch_command, | |
4020 | "Set breakpoints to catch exceptions that are raised.\n\ | |
4021 | Argument may be a single exception to catch, multiple exceptions\n\ | |
4022 | to catch, or the default exception \"default\". If no arguments\n\ | |
4023 | are given, breakpoints are set at all exception handlers catch clauses\n\ | |
4024 | within the current scope.\n\ | |
4025 | \n\ | |
4026 | A condition specified for the catch applies to all breakpoints set\n\ | |
4027 | with this command\n\ | |
4028 | \n\ | |
4029 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
4030 | ||
4031 | add_com ("watch", class_breakpoint, watch_command, | |
4032 | "Set a watchpoint for an expression.\n\ | |
4033 | A watchpoint stops execution of your program whenever the value of\n\ | |
4034 | an expression changes."); | |
4035 | ||
11054881 KH |
4036 | add_com ("rwatch", class_breakpoint, rwatch_command, |
4037 | "Set a read watchpoint for an expression.\n\ | |
4038 | A watchpoint stops execution of your program whenever the value of\n\ | |
4039 | an expression is read."); | |
4040 | ||
4041 | add_com ("awatch", class_breakpoint, awatch_command, | |
4042 | "Set a watchpoint for an expression.\n\ | |
4043 | A watchpoint stops execution of your program whenever the value of\n\ | |
4044 | an expression is either read or written."); | |
4045 | ||
c8950965 JG |
4046 | add_info ("watchpoints", breakpoints_info, |
4047 | "Synonym for ``info breakpoints''."); | |
9f577285 | 4048 | |
bd5635a1 | 4049 | } |