Commit | Line | Data |
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bd5635a1 | 1 | /* Everything about breakpoints, for GDB. |
9f577285 SS |
2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994 |
3 | Free Software Foundation, Inc. | |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
bdbd5f50 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
bdbd5f50 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
bdbd5f50 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
bdbd5f50 JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 20 | |
bd5635a1 | 21 | #include "defs.h" |
1eeba686 | 22 | #include <ctype.h> |
bd5635a1 RP |
23 | #include "symtab.h" |
24 | #include "frame.h" | |
25 | #include "breakpoint.h" | |
30875e1c | 26 | #include "gdbtypes.h" |
bd5635a1 RP |
27 | #include "expression.h" |
28 | #include "gdbcore.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "value.h" | |
31 | #include "ctype.h" | |
32 | #include "command.h" | |
33 | #include "inferior.h" | |
199b2450 | 34 | #include "thread.h" |
bd5635a1 | 35 | #include "target.h" |
d3b9c0df | 36 | #include "language.h" |
bd5635a1 | 37 | #include <string.h> |
423e9664 | 38 | #include "demangle.h" |
9f577285 | 39 | #include "annotate.h" |
bd5635a1 | 40 | |
30875e1c SG |
41 | /* local function prototypes */ |
42 | ||
43 | static void | |
44 | catch_command_1 PARAMS ((char *, int, int)); | |
45 | ||
46 | static void | |
47 | enable_delete_command PARAMS ((char *, int)); | |
48 | ||
49 | static void | |
50 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
51 | ||
52 | static void | |
53 | enable_once_command PARAMS ((char *, int)); | |
54 | ||
55 | static void | |
56 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
57 | ||
58 | static void | |
59 | disable_command PARAMS ((char *, int)); | |
60 | ||
61 | static void | |
62 | disable_breakpoint PARAMS ((struct breakpoint *)); | |
63 | ||
64 | static void | |
65 | enable_command PARAMS ((char *, int)); | |
66 | ||
67 | static void | |
68 | enable_breakpoint PARAMS ((struct breakpoint *)); | |
69 | ||
70 | static void | |
71 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); | |
72 | ||
73 | static void | |
74 | ignore_command PARAMS ((char *, int)); | |
75 | ||
76 | static int | |
77 | breakpoint_re_set_one PARAMS ((char *)); | |
78 | ||
79 | static void | |
80 | delete_command PARAMS ((char *, int)); | |
81 | ||
82 | static void | |
83 | clear_command PARAMS ((char *, int)); | |
84 | ||
85 | static void | |
86 | catch_command PARAMS ((char *, int)); | |
87 | ||
88 | static struct symtabs_and_lines | |
89 | get_catch_sals PARAMS ((int)); | |
90 | ||
91 | static void | |
92 | watch_command PARAMS ((char *, int)); | |
93 | ||
999dd04b | 94 | static int |
11054881 | 95 | can_use_hardware_watchpoint PARAMS ((struct value *)); |
999dd04b | 96 | |
30875e1c SG |
97 | static void |
98 | tbreak_command PARAMS ((char *, int)); | |
99 | ||
100 | static void | |
101 | break_command_1 PARAMS ((char *, int, int)); | |
102 | ||
103 | static void | |
104 | mention PARAMS ((struct breakpoint *)); | |
105 | ||
106 | static struct breakpoint * | |
107 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); | |
108 | ||
109 | static void | |
110 | check_duplicates PARAMS ((CORE_ADDR)); | |
111 | ||
112 | static void | |
113 | describe_other_breakpoints PARAMS ((CORE_ADDR)); | |
114 | ||
30875e1c SG |
115 | static void |
116 | breakpoints_info PARAMS ((char *, int)); | |
117 | ||
118 | static void | |
423e9664 | 119 | breakpoint_1 PARAMS ((int, int)); |
30875e1c SG |
120 | |
121 | static bpstat | |
122 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); | |
123 | ||
124 | static int | |
125 | breakpoint_cond_eval PARAMS ((char *)); | |
126 | ||
127 | static void | |
128 | cleanup_executing_breakpoints PARAMS ((int)); | |
129 | ||
130 | static void | |
131 | commands_command PARAMS ((char *, int)); | |
132 | ||
133 | static void | |
134 | condition_command PARAMS ((char *, int)); | |
135 | ||
136 | static int | |
137 | get_number PARAMS ((char **)); | |
138 | ||
139 | static void | |
140 | set_breakpoint_count PARAMS ((int)); | |
141 | ||
999dd04b JL |
142 | static int |
143 | remove_breakpoint PARAMS ((struct breakpoint *)); | |
30875e1c | 144 | |
bd5635a1 | 145 | extern int addressprint; /* Print machine addresses? */ |
bd5635a1 | 146 | |
bd5635a1 RP |
147 | /* Are we executing breakpoint commands? */ |
148 | static int executing_breakpoint_commands; | |
149 | ||
cba0d141 JG |
150 | /* Walk the following statement or block through all breakpoints. |
151 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
152 | breakpoint. */ | |
153 | ||
bd5635a1 RP |
154 | #define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) |
155 | ||
cba0d141 JG |
156 | #define ALL_BREAKPOINTS_SAFE(b,tmp) \ |
157 | for (b = breakpoint_chain; \ | |
158 | b? (tmp=b->next, 1): 0; \ | |
159 | b = tmp) | |
160 | ||
999dd04b JL |
161 | /* By default no support for hardware watchpoints is assumed. */ |
162 | #ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT | |
11054881 KH |
163 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) 0 |
164 | #define target_remove_watchpoint(ADDR,LEN,TYPE) -1 | |
165 | #define target_insert_watchpoint(ADDR,LEN,TYPE) -1 | |
166 | #endif | |
167 | ||
168 | #ifndef target_insert_hw_breakpoint | |
169 | #define target_remove_hw_breakpoint(ADDR,SHADOW) -1 | |
170 | #define target_insert_hw_breakpoint(ADDR,SHADOW) -1 | |
171 | #endif | |
172 | ||
173 | #ifndef target_stopped_data_address | |
174 | #define target_stopped_data_address() 0 | |
999dd04b JL |
175 | #endif |
176 | ||
9f577285 SS |
177 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
178 | ||
179 | int show_breakpoint_hit_counts = 1; | |
180 | ||
bd5635a1 RP |
181 | /* Chain of all breakpoints defined. */ |
182 | ||
05052b63 | 183 | static struct breakpoint *breakpoint_chain; |
bd5635a1 RP |
184 | |
185 | /* Number of last breakpoint made. */ | |
186 | ||
187 | static int breakpoint_count; | |
188 | ||
189 | /* Set breakpoint count to NUM. */ | |
9f577285 | 190 | |
bd5635a1 RP |
191 | static void |
192 | set_breakpoint_count (num) | |
193 | int num; | |
194 | { | |
195 | breakpoint_count = num; | |
196 | set_internalvar (lookup_internalvar ("bpnum"), | |
06b6c733 | 197 | value_from_longest (builtin_type_int, (LONGEST) num)); |
bd5635a1 RP |
198 | } |
199 | ||
9f577285 SS |
200 | /* Used in run_command to zero the hit count when a new run starts. */ |
201 | ||
202 | void | |
203 | clear_breakpoint_hit_counts () | |
204 | { | |
205 | struct breakpoint *b; | |
206 | ||
207 | ALL_BREAKPOINTS (b) | |
208 | b->hit_count = 0; | |
209 | } | |
210 | ||
bd5635a1 RP |
211 | /* Default address, symtab and line to put a breakpoint at |
212 | for "break" command with no arg. | |
213 | if default_breakpoint_valid is zero, the other three are | |
214 | not valid, and "break" with no arg is an error. | |
215 | ||
216 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
217 | ||
218 | int default_breakpoint_valid; | |
219 | CORE_ADDR default_breakpoint_address; | |
220 | struct symtab *default_breakpoint_symtab; | |
221 | int default_breakpoint_line; | |
bd5635a1 RP |
222 | \f |
223 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
224 | Advance *PP after the string and any trailing whitespace. | |
225 | ||
226 | Currently the string can either be a number or "$" followed by the name | |
227 | of a convenience variable. Making it an expression wouldn't work well | |
228 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
229 | static int | |
230 | get_number (pp) | |
231 | char **pp; | |
232 | { | |
233 | int retval; | |
234 | char *p = *pp; | |
235 | ||
236 | if (p == NULL) | |
237 | /* Empty line means refer to the last breakpoint. */ | |
238 | return breakpoint_count; | |
239 | else if (*p == '$') | |
240 | { | |
241 | /* Make a copy of the name, so we can null-terminate it | |
242 | to pass to lookup_internalvar(). */ | |
243 | char *varname; | |
244 | char *start = ++p; | |
82a2edfb | 245 | value_ptr val; |
bd5635a1 RP |
246 | |
247 | while (isalnum (*p) || *p == '_') | |
248 | p++; | |
249 | varname = (char *) alloca (p - start + 1); | |
250 | strncpy (varname, start, p - start); | |
251 | varname[p - start] = '\0'; | |
252 | val = value_of_internalvar (lookup_internalvar (varname)); | |
253 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
254 | error ( | |
255 | "Convenience variables used to specify breakpoints must have integer values." | |
256 | ); | |
257 | retval = (int) value_as_long (val); | |
258 | } | |
259 | else | |
260 | { | |
80ba48f5 SG |
261 | if (*p == '-') |
262 | ++p; | |
bd5635a1 RP |
263 | while (*p >= '0' && *p <= '9') |
264 | ++p; | |
265 | if (p == *pp) | |
266 | /* There is no number here. (e.g. "cond a == b"). */ | |
267 | error_no_arg ("breakpoint number"); | |
268 | retval = atoi (*pp); | |
269 | } | |
270 | if (!(isspace (*p) || *p == '\0')) | |
271 | error ("breakpoint number expected"); | |
272 | while (isspace (*p)) | |
273 | p++; | |
274 | *pp = p; | |
275 | return retval; | |
276 | } | |
277 | \f | |
278 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
279 | ||
280 | static void | |
281 | condition_command (arg, from_tty) | |
282 | char *arg; | |
283 | int from_tty; | |
284 | { | |
285 | register struct breakpoint *b; | |
286 | char *p; | |
287 | register int bnum; | |
288 | ||
289 | if (arg == 0) | |
290 | error_no_arg ("breakpoint number"); | |
291 | ||
292 | p = arg; | |
293 | bnum = get_number (&p); | |
294 | ||
295 | ALL_BREAKPOINTS (b) | |
296 | if (b->number == bnum) | |
297 | { | |
298 | if (b->cond) | |
299 | { | |
c8950965 | 300 | free ((PTR)b->cond); |
bd5635a1 RP |
301 | b->cond = 0; |
302 | } | |
303 | if (b->cond_string != NULL) | |
c8950965 | 304 | free ((PTR)b->cond_string); |
bd5635a1 RP |
305 | |
306 | if (*p == 0) | |
307 | { | |
308 | b->cond = 0; | |
309 | b->cond_string = NULL; | |
310 | if (from_tty) | |
423e9664 | 311 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); |
bd5635a1 RP |
312 | } |
313 | else | |
314 | { | |
315 | arg = p; | |
316 | /* I don't know if it matters whether this is the string the user | |
317 | typed in or the decompiled expression. */ | |
318 | b->cond_string = savestring (arg, strlen (arg)); | |
d3b9c0df | 319 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); |
bd5635a1 RP |
320 | if (*arg) |
321 | error ("Junk at end of expression"); | |
322 | } | |
323 | return; | |
324 | } | |
325 | ||
326 | error ("No breakpoint number %d.", bnum); | |
327 | } | |
328 | ||
bdbd5f50 | 329 | /* ARGSUSED */ |
bd5635a1 RP |
330 | static void |
331 | commands_command (arg, from_tty) | |
332 | char *arg; | |
333 | int from_tty; | |
334 | { | |
335 | register struct breakpoint *b; | |
336 | char *p; | |
337 | register int bnum; | |
338 | struct command_line *l; | |
339 | ||
340 | /* If we allowed this, we would have problems with when to | |
341 | free the storage, if we change the commands currently | |
342 | being read from. */ | |
343 | ||
344 | if (executing_breakpoint_commands) | |
345 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
346 | ||
347 | p = arg; | |
348 | bnum = get_number (&p); | |
349 | if (p && *p) | |
350 | error ("Unexpected extra arguments following breakpoint number."); | |
351 | ||
352 | ALL_BREAKPOINTS (b) | |
353 | if (b->number == bnum) | |
354 | { | |
bdbd5f50 | 355 | if (from_tty && input_from_terminal_p ()) |
9b280a7f | 356 | printf_filtered ("Type commands for when breakpoint %d is hit, one per line.\n\ |
bd5635a1 | 357 | End with a line saying just \"end\".\n", bnum); |
bd5635a1 RP |
358 | l = read_command_lines (); |
359 | free_command_lines (&b->commands); | |
360 | b->commands = l; | |
6c803036 | 361 | breakpoints_changed (); |
bd5635a1 RP |
362 | return; |
363 | } | |
364 | error ("No breakpoint number %d.", bnum); | |
365 | } | |
366 | \f | |
31ef19fc JK |
367 | extern int memory_breakpoint_size; /* from mem-break.c */ |
368 | ||
369 | /* Like target_read_memory() but if breakpoints are inserted, return | |
30875e1c SG |
370 | the shadow contents instead of the breakpoints themselves. |
371 | ||
372 | Read "memory data" from whatever target or inferior we have. | |
373 | Returns zero if successful, errno value if not. EIO is used | |
374 | for address out of bounds. If breakpoints are inserted, returns | |
375 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
376 | ||
31ef19fc JK |
377 | int |
378 | read_memory_nobpt (memaddr, myaddr, len) | |
379 | CORE_ADDR memaddr; | |
380 | char *myaddr; | |
381 | unsigned len; | |
382 | { | |
383 | int status; | |
384 | struct breakpoint *b; | |
385 | ||
386 | if (memory_breakpoint_size < 0) | |
5af4f5f6 JK |
387 | /* No breakpoints on this machine. FIXME: This should be |
388 | dependent on the debugging target. Probably want | |
389 | target_insert_breakpoint to return a size, saying how many | |
390 | bytes of the shadow contents are used, or perhaps have | |
391 | something like target_xfer_shadow. */ | |
31ef19fc JK |
392 | return target_read_memory (memaddr, myaddr, len); |
393 | ||
394 | ALL_BREAKPOINTS (b) | |
395 | { | |
999dd04b JL |
396 | if (b->type == bp_watchpoint |
397 | || b->type == bp_hardware_watchpoint | |
11054881 KH |
398 | || b->type == bp_read_watchpoint |
399 | || b->type == bp_access_watchpoint | |
999dd04b | 400 | || !b->inserted) |
31ef19fc JK |
401 | continue; |
402 | else if (b->address + memory_breakpoint_size <= memaddr) | |
403 | /* The breakpoint is entirely before the chunk of memory | |
404 | we are reading. */ | |
405 | continue; | |
406 | else if (b->address >= memaddr + len) | |
407 | /* The breakpoint is entirely after the chunk of memory we | |
408 | are reading. */ | |
409 | continue; | |
410 | else | |
411 | { | |
412 | /* Copy the breakpoint from the shadow contents, and recurse | |
413 | for the things before and after. */ | |
414 | ||
415 | /* Addresses and length of the part of the breakpoint that | |
416 | we need to copy. */ | |
417 | CORE_ADDR membpt = b->address; | |
418 | unsigned int bptlen = memory_breakpoint_size; | |
419 | /* Offset within shadow_contents. */ | |
420 | int bptoffset = 0; | |
421 | ||
422 | if (membpt < memaddr) | |
423 | { | |
424 | /* Only copy the second part of the breakpoint. */ | |
425 | bptlen -= memaddr - membpt; | |
426 | bptoffset = memaddr - membpt; | |
427 | membpt = memaddr; | |
428 | } | |
429 | ||
430 | if (membpt + bptlen > memaddr + len) | |
431 | { | |
432 | /* Only copy the first part of the breakpoint. */ | |
433 | bptlen -= (membpt + bptlen) - (memaddr + len); | |
434 | } | |
435 | ||
4ed3a9ea FF |
436 | memcpy (myaddr + membpt - memaddr, |
437 | b->shadow_contents + bptoffset, bptlen); | |
31ef19fc JK |
438 | |
439 | if (membpt > memaddr) | |
440 | { | |
441 | /* Copy the section of memory before the breakpoint. */ | |
442 | status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr); | |
443 | if (status != 0) | |
444 | return status; | |
445 | } | |
446 | ||
447 | if (membpt + bptlen < memaddr + len) | |
448 | { | |
449 | /* Copy the section of memory after the breakpoint. */ | |
450 | status = read_memory_nobpt | |
451 | (membpt + bptlen, | |
452 | myaddr + membpt + bptlen - memaddr, | |
453 | memaddr + len - (membpt + bptlen)); | |
454 | if (status != 0) | |
455 | return status; | |
456 | } | |
457 | return 0; | |
458 | } | |
459 | } | |
460 | /* Nothing overlaps. Just call read_memory_noerr. */ | |
461 | return target_read_memory (memaddr, myaddr, len); | |
462 | } | |
463 | \f | |
bd5635a1 RP |
464 | /* insert_breakpoints is used when starting or continuing the program. |
465 | remove_breakpoints is used when the program stops. | |
466 | Both return zero if successful, | |
467 | or an `errno' value if could not write the inferior. */ | |
468 | ||
469 | int | |
470 | insert_breakpoints () | |
471 | { | |
472 | register struct breakpoint *b; | |
473 | int val = 0; | |
474 | int disabled_breaks = 0; | |
475 | ||
476 | ALL_BREAKPOINTS (b) | |
30875e1c | 477 | if (b->type != bp_watchpoint |
999dd04b | 478 | && b->type != bp_hardware_watchpoint |
11054881 KH |
479 | && b->type != bp_read_watchpoint |
480 | && b->type != bp_access_watchpoint | |
bd5635a1 RP |
481 | && b->enable != disabled |
482 | && ! b->inserted | |
483 | && ! b->duplicate) | |
484 | { | |
11054881 KH |
485 | if (b->type == bp_hardware_breakpoint) |
486 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
487 | else | |
488 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
bd5635a1 RP |
489 | if (val) |
490 | { | |
491 | /* Can't set the breakpoint. */ | |
492 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
493 | if (DISABLE_UNSETTABLE_BREAK (b->address)) | |
494 | { | |
495 | val = 0; | |
496 | b->enable = disabled; | |
497 | if (!disabled_breaks) | |
498 | { | |
05052b63 | 499 | target_terminal_ours_for_output (); |
199b2450 | 500 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 501 | "Cannot insert breakpoint %d:\n", b->number); |
bd5635a1 RP |
502 | printf_filtered ("Disabling shared library breakpoints:\n"); |
503 | } | |
504 | disabled_breaks = 1; | |
505 | printf_filtered ("%d ", b->number); | |
506 | } | |
507 | else | |
508 | #endif | |
509 | { | |
05052b63 | 510 | target_terminal_ours_for_output (); |
199b2450 | 511 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
d3b9c0df | 512 | #ifdef ONE_PROCESS_WRITETEXT |
199b2450 | 513 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 514 | "The same program may be running in another process.\n"); |
d3b9c0df | 515 | #endif |
bd5635a1 RP |
516 | memory_error (val, b->address); /* which bombs us out */ |
517 | } | |
518 | } | |
519 | else | |
520 | b->inserted = 1; | |
521 | } | |
11054881 KH |
522 | else if ((b->type == bp_hardware_watchpoint || |
523 | b->type == bp_read_watchpoint || | |
524 | b->type == bp_access_watchpoint) | |
999dd04b JL |
525 | && b->enable == enabled |
526 | && ! b->inserted | |
527 | && ! b->duplicate) | |
528 | { | |
529 | FRAME saved_frame; | |
530 | int saved_level, within_current_scope; | |
531 | value_ptr mark = value_mark (); | |
532 | value_ptr v; | |
533 | ||
534 | /* Save the current frame and level so we can restore it after | |
535 | evaluating the watchpoint expression on its own frame. */ | |
536 | saved_frame = selected_frame; | |
537 | saved_level = selected_frame_level; | |
538 | ||
539 | /* Determine if the watchpoint is within scope. */ | |
540 | if (b->exp_valid_block == NULL) | |
541 | within_current_scope = 1; | |
542 | else | |
543 | { | |
544 | FRAME fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
545 | within_current_scope = (fr != NULL); | |
546 | if (within_current_scope) | |
547 | select_frame (fr, -1); | |
548 | } | |
549 | ||
550 | if (within_current_scope) | |
551 | { | |
552 | /* Evaluate the expression and cut the chain of values | |
553 | produced off from the value chain. */ | |
554 | v = evaluate_expression (b->exp); | |
555 | value_release_to_mark (mark); | |
556 | ||
557 | b->val_chain = v; | |
558 | b->inserted = 1; | |
559 | ||
560 | /* Look at each value on the value chain. */ | |
561 | for ( ; v; v=v->next) | |
562 | { | |
563 | /* If it's a memory location, then we must watch it. */ | |
564 | if (v->lval == lval_memory) | |
565 | { | |
11054881 | 566 | int addr, len, type; |
999dd04b JL |
567 | |
568 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
569 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 KH |
570 | type = 0; |
571 | if (b->type == bp_read_watchpoint) | |
572 | type = 1; | |
573 | else if (b->type == bp_access_watchpoint) | |
574 | type = 2; | |
575 | ||
576 | val = target_insert_watchpoint (addr, len, type); | |
999dd04b JL |
577 | if (val == -1) |
578 | { | |
579 | b->inserted = 0; | |
580 | break; | |
581 | } | |
582 | val = 0; | |
583 | } | |
584 | } | |
585 | /* Failure to insert a watchpoint on any memory value in the | |
586 | value chain brings us here. */ | |
587 | if (!b->inserted) | |
588 | warning ("Hardware watchpoint %d: Could not insert watchpoint\n", | |
589 | b->number); | |
590 | } | |
591 | else | |
592 | { | |
593 | printf_filtered ("\ | |
594 | Hardware watchpoint %d deleted because the program has left the block in\n\ | |
595 | which its expression is valid.\n", b->number); | |
596 | if (b->related_breakpoint) | |
597 | delete_breakpoint (b->related_breakpoint); | |
598 | delete_breakpoint (b); | |
599 | } | |
600 | ||
601 | /* Restore the frame and level. */ | |
602 | select_frame (saved_frame, saved_level); | |
603 | } | |
bd5635a1 RP |
604 | if (disabled_breaks) |
605 | printf_filtered ("\n"); | |
606 | return val; | |
607 | } | |
608 | ||
999dd04b | 609 | |
bd5635a1 RP |
610 | int |
611 | remove_breakpoints () | |
612 | { | |
613 | register struct breakpoint *b; | |
614 | int val; | |
615 | ||
bd5635a1 | 616 | ALL_BREAKPOINTS (b) |
999dd04b JL |
617 | { |
618 | if (b->inserted) | |
619 | { | |
620 | val = remove_breakpoint (b); | |
621 | if (val != 0) | |
622 | return val; | |
623 | } | |
624 | } | |
625 | return 0; | |
626 | } | |
bd5635a1 | 627 | |
999dd04b JL |
628 | |
629 | static int | |
630 | remove_breakpoint (b) | |
631 | struct breakpoint *b; | |
632 | { | |
633 | int val; | |
634 | ||
635 | if (b->type != bp_watchpoint | |
11054881 KH |
636 | && b->type != bp_hardware_watchpoint |
637 | && b->type != bp_read_watchpoint | |
638 | && b->type != bp_access_watchpoint) | |
999dd04b | 639 | { |
11054881 KH |
640 | if (b->type == bp_hardware_breakpoint) |
641 | val = target_remove_hw_breakpoint(b->address, b->shadow_contents); | |
642 | else | |
643 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
999dd04b JL |
644 | if (val) |
645 | return val; | |
646 | b->inserted = 0; | |
647 | } | |
11054881 KH |
648 | else if ((b->type == bp_hardware_watchpoint || |
649 | b->type == bp_read_watchpoint || | |
650 | b->type == bp_access_watchpoint) | |
999dd04b JL |
651 | && b->enable == enabled |
652 | && ! b->duplicate) | |
653 | { | |
654 | value_ptr v, n; | |
655 | ||
656 | b->inserted = 0; | |
657 | /* Walk down the saved value chain. */ | |
658 | for (v = b->val_chain; v; v = v->next) | |
659 | { | |
660 | /* For each memory reference remove the watchpoint | |
661 | at that address. */ | |
662 | if (v->lval == lval_memory) | |
663 | { | |
664 | int addr, len; | |
665 | ||
666 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
667 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 | 668 | val = target_remove_watchpoint (addr, len, b->type); |
999dd04b JL |
669 | if (val == -1) |
670 | b->inserted = 1; | |
671 | val = 0; | |
672 | } | |
673 | } | |
674 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
675 | if (b->inserted) | |
676 | error ("Hardware watchpoint %d: Could not remove watchpoint\n", | |
677 | b->number); | |
678 | ||
679 | /* Free the saved value chain. We will construct a new one | |
680 | the next time the watchpoint is inserted. */ | |
681 | for (v = b->val_chain; v; v = n) | |
682 | { | |
683 | n = v->next; | |
684 | value_free (v); | |
685 | } | |
686 | b->val_chain = NULL; | |
687 | } | |
bd5635a1 RP |
688 | return 0; |
689 | } | |
690 | ||
cf3e377e | 691 | /* Clear the "inserted" flag in all breakpoints. */ |
bd5635a1 RP |
692 | |
693 | void | |
694 | mark_breakpoints_out () | |
695 | { | |
696 | register struct breakpoint *b; | |
697 | ||
698 | ALL_BREAKPOINTS (b) | |
699 | b->inserted = 0; | |
700 | } | |
701 | ||
cf3e377e JK |
702 | /* Clear the "inserted" flag in all breakpoints and delete any breakpoints |
703 | which should go away between runs of the program. */ | |
704 | ||
705 | void | |
706 | breakpoint_init_inferior () | |
707 | { | |
708 | register struct breakpoint *b, *temp; | |
709 | ||
710 | ALL_BREAKPOINTS_SAFE (b, temp) | |
711 | { | |
712 | b->inserted = 0; | |
713 | ||
714 | /* If the call dummy breakpoint is at the entry point it will | |
715 | cause problems when the inferior is rerun, so we better | |
716 | get rid of it. */ | |
717 | if (b->type == bp_call_dummy) | |
718 | delete_breakpoint (b); | |
999dd04b JL |
719 | |
720 | /* Likewise for scope breakpoints. */ | |
721 | if (b->type == bp_watchpoint_scope) | |
722 | delete_breakpoint (b); | |
723 | ||
724 | /* Likewise for watchpoints on local expressions. */ | |
11054881 KH |
725 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint || |
726 | b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) | |
999dd04b JL |
727 | && b->exp_valid_block != NULL) |
728 | delete_breakpoint (b); | |
cf3e377e JK |
729 | } |
730 | } | |
731 | ||
bd5635a1 RP |
732 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. |
733 | When continuing from a location with a breakpoint, | |
734 | we actually single step once before calling insert_breakpoints. */ | |
735 | ||
736 | int | |
737 | breakpoint_here_p (pc) | |
738 | CORE_ADDR pc; | |
739 | { | |
740 | register struct breakpoint *b; | |
741 | ||
742 | ALL_BREAKPOINTS (b) | |
743 | if (b->enable != disabled && b->address == pc) | |
744 | return 1; | |
745 | ||
746 | return 0; | |
747 | } | |
199b2450 | 748 | |
05052b63 JK |
749 | /* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY |
750 | because figuring out the saved SP would take too much time, at least using | |
751 | get_saved_register on the 68k. This means that for this function to | |
752 | work right a port must use the bp_call_dummy breakpoint. */ | |
753 | ||
754 | int | |
755 | frame_in_dummy (frame) | |
756 | FRAME frame; | |
757 | { | |
758 | struct breakpoint *b; | |
759 | ||
d7e7e851 | 760 | #ifdef CALL_DUMMY |
05052b63 JK |
761 | ALL_BREAKPOINTS (b) |
762 | { | |
d7e7e851 JK |
763 | static unsigned LONGEST dummy[] = CALL_DUMMY; |
764 | ||
05052b63 | 765 | if (b->type == bp_call_dummy |
d7e7e851 JK |
766 | && b->frame == frame->frame |
767 | ||
768 | /* We need to check the PC as well as the frame on the sparc, | |
769 | for signals.exp in the testsuite. */ | |
770 | && (frame->pc | |
771 | >= (b->address | |
772 | - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE)) | |
773 | && frame->pc <= b->address) | |
05052b63 JK |
774 | return 1; |
775 | } | |
d7e7e851 | 776 | #endif /* CALL_DUMMY */ |
05052b63 JK |
777 | return 0; |
778 | } | |
779 | ||
199b2450 TL |
780 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC |
781 | is valid for process/thread PID. */ | |
782 | ||
783 | int | |
784 | breakpoint_thread_match (pc, pid) | |
785 | CORE_ADDR pc; | |
786 | int pid; | |
787 | { | |
788 | struct breakpoint *b; | |
789 | int thread; | |
790 | ||
791 | thread = pid_to_thread_id (pid); | |
792 | ||
793 | ALL_BREAKPOINTS (b) | |
794 | if (b->enable != disabled | |
795 | && b->address == pc | |
796 | && (b->thread == -1 || b->thread == thread)) | |
797 | return 1; | |
798 | ||
799 | return 0; | |
800 | } | |
801 | ||
bd5635a1 RP |
802 | \f |
803 | /* bpstat stuff. External routines' interfaces are documented | |
804 | in breakpoint.h. */ | |
30875e1c SG |
805 | |
806 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
807 | Also free any storage that is part of a bpstat. */ | |
808 | ||
bd5635a1 RP |
809 | void |
810 | bpstat_clear (bsp) | |
811 | bpstat *bsp; | |
812 | { | |
813 | bpstat p; | |
814 | bpstat q; | |
815 | ||
816 | if (bsp == 0) | |
817 | return; | |
818 | p = *bsp; | |
819 | while (p != NULL) | |
820 | { | |
821 | q = p->next; | |
822 | if (p->old_val != NULL) | |
823 | value_free (p->old_val); | |
c8950965 | 824 | free ((PTR)p); |
bd5635a1 RP |
825 | p = q; |
826 | } | |
827 | *bsp = NULL; | |
828 | } | |
829 | ||
30875e1c SG |
830 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
831 | is part of the bpstat is copied as well. */ | |
832 | ||
bd5635a1 RP |
833 | bpstat |
834 | bpstat_copy (bs) | |
835 | bpstat bs; | |
836 | { | |
837 | bpstat p = NULL; | |
838 | bpstat tmp; | |
fee933f1 | 839 | bpstat retval = NULL; |
bd5635a1 RP |
840 | |
841 | if (bs == NULL) | |
842 | return bs; | |
843 | ||
844 | for (; bs != NULL; bs = bs->next) | |
845 | { | |
846 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4ed3a9ea | 847 | memcpy (tmp, bs, sizeof (*tmp)); |
bd5635a1 RP |
848 | if (p == NULL) |
849 | /* This is the first thing in the chain. */ | |
850 | retval = tmp; | |
851 | else | |
852 | p->next = tmp; | |
853 | p = tmp; | |
854 | } | |
855 | p->next = NULL; | |
856 | return retval; | |
857 | } | |
858 | ||
30875e1c SG |
859 | /* Find the bpstat associated with this breakpoint */ |
860 | ||
861 | bpstat | |
862 | bpstat_find_breakpoint(bsp, breakpoint) | |
863 | bpstat bsp; | |
864 | struct breakpoint *breakpoint; | |
865 | { | |
866 | if (bsp == NULL) return NULL; | |
867 | ||
868 | for (;bsp != NULL; bsp = bsp->next) { | |
869 | if (bsp->breakpoint_at == breakpoint) return bsp; | |
870 | } | |
871 | return NULL; | |
872 | } | |
873 | ||
874 | /* Return the breakpoint number of the first breakpoint we are stopped | |
875 | at. *BSP upon return is a bpstat which points to the remaining | |
876 | breakpoints stopped at (but which is not guaranteed to be good for | |
877 | anything but further calls to bpstat_num). | |
878 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
879 | ||
bd5635a1 RP |
880 | int |
881 | bpstat_num (bsp) | |
882 | bpstat *bsp; | |
883 | { | |
884 | struct breakpoint *b; | |
885 | ||
886 | if ((*bsp) == NULL) | |
887 | return 0; /* No more breakpoint values */ | |
888 | else | |
889 | { | |
890 | b = (*bsp)->breakpoint_at; | |
891 | *bsp = (*bsp)->next; | |
892 | if (b == NULL) | |
893 | return -1; /* breakpoint that's been deleted since */ | |
894 | else | |
895 | return b->number; /* We have its number */ | |
896 | } | |
897 | } | |
898 | ||
30875e1c SG |
899 | /* Modify BS so that the actions will not be performed. */ |
900 | ||
bd5635a1 RP |
901 | void |
902 | bpstat_clear_actions (bs) | |
903 | bpstat bs; | |
904 | { | |
905 | for (; bs != NULL; bs = bs->next) | |
906 | { | |
907 | bs->commands = NULL; | |
908 | if (bs->old_val != NULL) | |
909 | { | |
910 | value_free (bs->old_val); | |
911 | bs->old_val = NULL; | |
912 | } | |
913 | } | |
914 | } | |
915 | ||
bdbd5f50 JG |
916 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
917 | /* ARGSUSED */ | |
918 | static void | |
919 | cleanup_executing_breakpoints (ignore) | |
920 | int ignore; | |
921 | { | |
922 | executing_breakpoint_commands = 0; | |
923 | } | |
924 | ||
bd5635a1 RP |
925 | /* Execute all the commands associated with all the breakpoints at this |
926 | location. Any of these commands could cause the process to proceed | |
927 | beyond this point, etc. We look out for such changes by checking | |
928 | the global "breakpoint_proceeded" after each command. */ | |
30875e1c | 929 | |
bd5635a1 RP |
930 | void |
931 | bpstat_do_actions (bsp) | |
932 | bpstat *bsp; | |
933 | { | |
934 | bpstat bs; | |
bdbd5f50 JG |
935 | struct cleanup *old_chain; |
936 | ||
937 | executing_breakpoint_commands = 1; | |
938 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
bd5635a1 RP |
939 | |
940 | top: | |
941 | bs = *bsp; | |
942 | ||
bd5635a1 RP |
943 | breakpoint_proceeded = 0; |
944 | for (; bs != NULL; bs = bs->next) | |
945 | { | |
946 | while (bs->commands) | |
947 | { | |
948 | char *line = bs->commands->line; | |
949 | bs->commands = bs->commands->next; | |
950 | execute_command (line, 0); | |
951 | /* If 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 | if (breakpoint_proceeded) | |
956 | goto top; | |
957 | } | |
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 | ||
1095 | /* Check watchpoint condition. */ | |
557f3a0e | 1096 | |
8af68e4e JK |
1097 | static int |
1098 | watchpoint_check (p) | |
fe675038 | 1099 | char *p; |
8af68e4e JK |
1100 | { |
1101 | bpstat bs = (bpstat) p; | |
11054881 | 1102 | struct breakpoint *b; |
999dd04b JL |
1103 | FRAME saved_frame, fr; |
1104 | int within_current_scope, saved_level; | |
1105 | ||
1106 | /* Save the current frame and level so we can restore it after | |
1107 | evaluating the watchpoint expression on its own frame. */ | |
1108 | saved_frame = selected_frame; | |
1109 | saved_level = selected_frame_level; | |
8af68e4e | 1110 | |
557f3a0e SS |
1111 | b = bs->breakpoint_at; |
1112 | ||
1113 | if (b->exp_valid_block == NULL) | |
8af68e4e | 1114 | within_current_scope = 1; |
fa99ebe1 JK |
1115 | else |
1116 | { | |
557f3a0e | 1117 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
999dd04b | 1118 | within_current_scope = (fr != NULL); |
fa99ebe1 JK |
1119 | if (within_current_scope) |
1120 | /* If we end up stopping, the current frame will get selected | |
1121 | in normal_stop. So this call to select_frame won't affect | |
1122 | the user. */ | |
1123 | select_frame (fr, -1); | |
1124 | } | |
1125 | ||
8af68e4e JK |
1126 | if (within_current_scope) |
1127 | { | |
1128 | /* We use value_{,free_to_}mark because it could be a | |
1129 | *long* time before we return to the command level and | |
cef4c2e7 PS |
1130 | call free_all_values. We can't call free_all_values because |
1131 | we might be in the middle of evaluating a function call. */ | |
8af68e4e | 1132 | |
82a2edfb JK |
1133 | value_ptr mark = value_mark (); |
1134 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
557f3a0e | 1135 | if (!value_equal (b->val, new_val)) |
8af68e4e JK |
1136 | { |
1137 | release_value (new_val); | |
1138 | value_free_to_mark (mark); | |
557f3a0e SS |
1139 | bs->old_val = b->val; |
1140 | b->val = new_val; | |
8af68e4e | 1141 | /* We will stop here */ |
999dd04b | 1142 | select_frame (saved_frame, saved_level); |
8af68e4e JK |
1143 | return WP_VALUE_CHANGED; |
1144 | } | |
1145 | else | |
1146 | { | |
1147 | /* Nothing changed, don't do anything. */ | |
1148 | value_free_to_mark (mark); | |
1149 | /* We won't stop here */ | |
999dd04b | 1150 | select_frame (saved_frame, saved_level); |
8af68e4e JK |
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 SS |
1167 | if (b->related_breakpoint) |
1168 | delete_breakpoint (b->related_breakpoint); | |
1169 | delete_breakpoint (b); | |
999dd04b JL |
1170 | |
1171 | select_frame (saved_frame, saved_level); | |
1172 | return WP_DELETED; | |
8af68e4e JK |
1173 | } |
1174 | } | |
1175 | ||
1176 | /* This is used when everything which needs to be printed has | |
1177 | already been printed. But we still want to print the frame. */ | |
1178 | static int | |
cabd4da6 | 1179 | print_it_done (bs) |
8af68e4e JK |
1180 | bpstat bs; |
1181 | { | |
1182 | return 0; | |
1183 | } | |
1184 | ||
cabd4da6 JK |
1185 | /* This is used when nothing should be printed for this bpstat entry. */ |
1186 | ||
1187 | static int | |
1188 | print_it_noop (bs) | |
1189 | bpstat bs; | |
1190 | { | |
1191 | return -1; | |
1192 | } | |
1193 | ||
cb6b0202 JK |
1194 | /* Get a bpstat associated with having just stopped at address *PC |
1195 | and frame address FRAME_ADDRESS. Update *PC to point at the | |
1196 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
1197 | if this is known to not be a real breakpoint (it could still be a | |
1198 | watchpoint, though). */ | |
1199 | ||
bd5635a1 RP |
1200 | /* Determine whether we stopped at a breakpoint, etc, or whether we |
1201 | don't understand this stop. Result is a chain of bpstat's such that: | |
1202 | ||
1203 | if we don't understand the stop, the result is a null pointer. | |
1204 | ||
cb6b0202 | 1205 | if we understand why we stopped, the result is not null. |
bd5635a1 RP |
1206 | |
1207 | Each element of the chain refers to a particular breakpoint or | |
1208 | watchpoint at which we have stopped. (We may have stopped for | |
2d313932 | 1209 | several reasons concurrently.) |
bd5635a1 RP |
1210 | |
1211 | Each element of the chain has valid next, breakpoint_at, | |
1212 | commands, FIXME??? fields. | |
1213 | ||
1214 | */ | |
1215 | ||
bd5635a1 | 1216 | bpstat |
cb6b0202 | 1217 | bpstat_stop_status (pc, frame_address, not_a_breakpoint) |
bd5635a1 RP |
1218 | CORE_ADDR *pc; |
1219 | FRAME_ADDR frame_address; | |
cb6b0202 | 1220 | int not_a_breakpoint; |
bd5635a1 RP |
1221 | { |
1222 | register struct breakpoint *b; | |
bd5635a1 | 1223 | CORE_ADDR bp_addr; |
bdbd5f50 | 1224 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1225 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
1226 | int real_breakpoint = 0; | |
bdbd5f50 | 1227 | #endif |
bd5635a1 | 1228 | /* Root of the chain of bpstat's */ |
cba0d141 | 1229 | struct bpstat root_bs[1]; |
bd5635a1 RP |
1230 | /* Pointer to the last thing in the chain currently. */ |
1231 | bpstat bs = root_bs; | |
11054881 KH |
1232 | static char message1[] = |
1233 | "Error evaluating expression for watchpoint %d\n"; | |
1234 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 RP |
1235 | |
1236 | /* Get the address where the breakpoint would have been. */ | |
1237 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
1238 | ||
1239 | ALL_BREAKPOINTS (b) | |
1240 | { | |
bd5635a1 RP |
1241 | if (b->enable == disabled) |
1242 | continue; | |
30875e1c | 1243 | |
999dd04b JL |
1244 | if (b->type != bp_watchpoint |
1245 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1246 | && b->type != bp_read_watchpoint |
1247 | && b->type != bp_access_watchpoint | |
1248 | && b->type != bp_hardware_breakpoint | |
999dd04b | 1249 | && b->address != bp_addr) |
bd5635a1 RP |
1250 | continue; |
1251 | ||
11054881 KH |
1252 | #ifndef DECR_PC_AFTER_HW_BREAK |
1253 | #define DECR_PC_AFTER_HW_BREAK 0 | |
1254 | #endif | |
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) | |
1301 | delete_breakpoint (b->related_breakpoint); | |
1302 | delete_breakpoint (b); | |
8af68e4e | 1303 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1304 | bs->print_it = print_it_done; |
999dd04b | 1305 | |
8af68e4e JK |
1306 | /* Stop. */ |
1307 | break; | |
bd5635a1 RP |
1308 | } |
1309 | } | |
11054881 KH |
1310 | else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) |
1311 | { | |
1312 | CORE_ADDR addr; | |
1313 | value_ptr v; | |
1314 | int found = 0; | |
1315 | ||
1316 | addr = target_stopped_data_address(); | |
1317 | if (addr == 0) continue; | |
1318 | for (v = b->val_chain; v; v = v->next) | |
1319 | { | |
1320 | if (v->lval == lval_memory) | |
1321 | { | |
1322 | CORE_ADDR vaddr; | |
1323 | ||
1324 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1325 | if (addr == vaddr) | |
1326 | found = 1; | |
1327 | } | |
1328 | } | |
1329 | if (found) | |
1330 | switch (catch_errors (watchpoint_check, (char *) bs, message, | |
1331 | RETURN_MASK_ALL)) | |
1332 | { | |
1333 | case WP_DELETED: | |
1334 | /* We've already printed what needs to be printed. */ | |
1335 | bs->print_it = print_it_done; | |
1336 | /* Stop. */ | |
1337 | break; | |
1338 | case WP_VALUE_CHANGED: | |
1339 | case WP_VALUE_NOT_CHANGED: | |
1340 | /* Stop. */ | |
1341 | break; | |
1342 | default: | |
1343 | /* Can't happen. */ | |
1344 | case 0: | |
1345 | /* Error from catch_errors. */ | |
1346 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
1347 | if (b->related_breakpoint) | |
1348 | delete_breakpoint (b->related_breakpoint); | |
1349 | delete_breakpoint (b); | |
1350 | /* We've already printed what needs to be printed. */ | |
1351 | bs->print_it = print_it_done; | |
1352 | break; | |
1353 | } | |
1354 | } | |
bdbd5f50 | 1355 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1356 | else |
1357 | real_breakpoint = 1; | |
bdbd5f50 | 1358 | #endif |
bd5635a1 RP |
1359 | |
1360 | if (b->frame && b->frame != frame_address) | |
cabd4da6 | 1361 | bs->stop = 0; |
bd5635a1 RP |
1362 | else |
1363 | { | |
fee933f1 | 1364 | int value_is_zero = 0; |
bd5635a1 RP |
1365 | |
1366 | if (b->cond) | |
1367 | { | |
1368 | /* Need to select the frame, with all that implies | |
1369 | so that the conditions will have the right context. */ | |
1370 | select_frame (get_current_frame (), 0); | |
bdbd5f50 JG |
1371 | value_is_zero |
1372 | = catch_errors (breakpoint_cond_eval, (char *)(b->cond), | |
fe675038 JK |
1373 | "Error in testing breakpoint condition:\n", |
1374 | RETURN_MASK_ALL); | |
06b6c733 | 1375 | /* FIXME-someday, should give breakpoint # */ |
bd5635a1 RP |
1376 | free_all_values (); |
1377 | } | |
bdbd5f50 | 1378 | if (b->cond && value_is_zero) |
bd5635a1 | 1379 | { |
cabd4da6 | 1380 | bs->stop = 0; |
bd5635a1 RP |
1381 | } |
1382 | else if (b->ignore_count > 0) | |
1383 | { | |
1384 | b->ignore_count--; | |
cabd4da6 | 1385 | bs->stop = 0; |
bd5635a1 RP |
1386 | } |
1387 | else | |
1388 | { | |
1389 | /* We will stop here */ | |
30875e1c | 1390 | if (b->disposition == disable) |
bd5635a1 RP |
1391 | b->enable = disabled; |
1392 | bs->commands = b->commands; | |
1393 | if (b->silent) | |
cabd4da6 | 1394 | bs->print = 0; |
2d313932 | 1395 | if (bs->commands && STREQ ("silent", bs->commands->line)) |
bd5635a1 RP |
1396 | { |
1397 | bs->commands = bs->commands->next; | |
cabd4da6 | 1398 | bs->print = 0; |
bd5635a1 RP |
1399 | } |
1400 | } | |
1401 | } | |
cabd4da6 JK |
1402 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
1403 | if (bs->stop == 0 || bs->print == 0) | |
1404 | bs->print_it = print_it_noop; | |
bd5635a1 RP |
1405 | } |
1406 | ||
1407 | bs->next = NULL; /* Terminate the chain */ | |
1408 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
cabd4da6 | 1409 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1410 | if (bs) |
1411 | { | |
bd5635a1 RP |
1412 | if (real_breakpoint) |
1413 | { | |
1414 | *pc = bp_addr; | |
1415 | #if defined (SHIFT_INST_REGS) | |
817ac7f8 | 1416 | SHIFT_INST_REGS(); |
bd5635a1 RP |
1417 | #else /* No SHIFT_INST_REGS. */ |
1418 | write_pc (bp_addr); | |
1419 | #endif /* No SHIFT_INST_REGS. */ | |
1420 | } | |
bd5635a1 | 1421 | } |
cabd4da6 | 1422 | #endif /* DECR_PC_AFTER_BREAK != 0. */ |
999dd04b JL |
1423 | |
1424 | /* The value of a hardware watchpoint hasn't changed, but the | |
1425 | intermediate memory locations we are watching may have. */ | |
11054881 KH |
1426 | if (bs && ! bs->stop && |
1427 | (bs->breakpoint_at->type == bp_hardware_watchpoint || | |
1428 | bs->breakpoint_at->type == bp_read_watchpoint || | |
1429 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
999dd04b JL |
1430 | { |
1431 | remove_breakpoints (); | |
1432 | insert_breakpoints (); | |
1433 | } | |
bd5635a1 RP |
1434 | return bs; |
1435 | } | |
cabd4da6 JK |
1436 | \f |
1437 | /* Tell what to do about this bpstat. */ | |
fe675038 | 1438 | struct bpstat_what |
cabd4da6 JK |
1439 | bpstat_what (bs) |
1440 | bpstat bs; | |
1441 | { | |
1442 | /* Classify each bpstat as one of the following. */ | |
1443 | enum class { | |
fe675038 JK |
1444 | /* This bpstat element has no effect on the main_action. */ |
1445 | no_effect = 0, | |
cabd4da6 JK |
1446 | |
1447 | /* There was a watchpoint, stop but don't print. */ | |
1448 | wp_silent, | |
1449 | ||
1450 | /* There was a watchpoint, stop and print. */ | |
1451 | wp_noisy, | |
1452 | ||
1453 | /* There was a breakpoint but we're not stopping. */ | |
1454 | bp_nostop, | |
1455 | ||
1456 | /* There was a breakpoint, stop but don't print. */ | |
1457 | bp_silent, | |
1458 | ||
1459 | /* There was a breakpoint, stop and print. */ | |
1460 | bp_noisy, | |
1461 | ||
1462 | /* We hit the longjmp breakpoint. */ | |
1463 | long_jump, | |
1464 | ||
1465 | /* We hit the longjmp_resume breakpoint. */ | |
1466 | long_resume, | |
1467 | ||
d7e7e851 JK |
1468 | /* We hit the step_resume breakpoint. */ |
1469 | step_resume, | |
1470 | ||
bcc37718 JK |
1471 | /* We hit the through_sigtramp breakpoint. */ |
1472 | through_sig, | |
1473 | ||
cabd4da6 JK |
1474 | /* This is just used to count how many enums there are. */ |
1475 | class_last | |
1476 | }; | |
1477 | ||
1478 | /* Here is the table which drives this routine. So that we can | |
1479 | format it pretty, we define some abbreviations for the | |
1480 | enum bpstat_what codes. */ | |
1481 | #define keep_c BPSTAT_WHAT_KEEP_CHECKING | |
1482 | #define stop_s BPSTAT_WHAT_STOP_SILENT | |
1483 | #define stop_n BPSTAT_WHAT_STOP_NOISY | |
1484 | #define single BPSTAT_WHAT_SINGLE | |
1485 | #define setlr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
1486 | #define clrlr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
1487 | #define clrlrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
d7e7e851 | 1488 | #define sr BPSTAT_WHAT_STEP_RESUME |
bcc37718 | 1489 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP |
d7e7e851 | 1490 | |
cabd4da6 JK |
1491 | /* "Can't happen." Might want to print an error message. |
1492 | abort() is not out of the question, but chances are GDB is just | |
1493 | a bit confused, not unusable. */ | |
1494 | #define err BPSTAT_WHAT_STOP_NOISY | |
1495 | ||
1496 | /* Given an old action and a class, come up with a new action. */ | |
84d59861 JK |
1497 | /* One interesting property of this table is that wp_silent is the same |
1498 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
1499 | after stopping, the check for whether to step over a breakpoint | |
1500 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
1501 | reference to how we stopped. We retain separate wp_silent and bp_silent | |
1502 | codes in case we want to change that someday. */ | |
d7e7e851 JK |
1503 | |
1504 | /* step_resume entries: a step resume breakpoint overrides another | |
1505 | breakpoint of signal handling (see comment in wait_for_inferior | |
1506 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
bcc37718 JK |
1507 | /* We handle the through_sigtramp_breakpoint the same way; having both |
1508 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
d7e7e851 | 1509 | |
fe675038 | 1510 | static const enum bpstat_what_main_action |
cabd4da6 JK |
1511 | table[(int)class_last][(int)BPSTAT_WHAT_LAST] = |
1512 | { | |
1513 | /* old action */ | |
bcc37718 JK |
1514 | /* keep_c stop_s stop_n single setlr clrlr clrlrs sr ts |
1515 | */ | |
1516 | /*no_effect*/ {keep_c,stop_s,stop_n,single, setlr , clrlr , clrlrs, sr, ts}, | |
1517 | /*wp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts}, | |
1518 | /*wp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts}, | |
1519 | /*bp_nostop*/ {single,stop_s,stop_n,single, setlr , clrlrs, clrlrs, sr, ts}, | |
1520 | /*bp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts}, | |
1521 | /*bp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts}, | |
1522 | /*long_jump*/ {setlr ,stop_s,stop_n,setlr , err , err , err , sr, ts}, | |
1523 | /*long_resume*/ {clrlr ,stop_s,stop_n,clrlrs, err , err , err , sr, ts}, | |
1524 | /*step_resume*/ {sr ,sr ,sr ,sr , sr , sr , sr , sr, ts}, | |
1525 | /*through_sig*/ {ts ,ts ,ts ,ts , ts , ts , ts , ts, ts} | |
cabd4da6 JK |
1526 | }; |
1527 | #undef keep_c | |
1528 | #undef stop_s | |
1529 | #undef stop_n | |
1530 | #undef single | |
1531 | #undef setlr | |
1532 | #undef clrlr | |
1533 | #undef clrlrs | |
1534 | #undef err | |
bcc37718 JK |
1535 | #undef sr |
1536 | #undef ts | |
fe675038 | 1537 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
84d59861 | 1538 | struct bpstat_what retval; |
cabd4da6 | 1539 | |
cef4c2e7 | 1540 | retval.call_dummy = 0; |
cabd4da6 JK |
1541 | for (; bs != NULL; bs = bs->next) |
1542 | { | |
fee933f1 | 1543 | enum class bs_class = no_effect; |
cabd4da6 JK |
1544 | if (bs->breakpoint_at == NULL) |
1545 | /* I suspect this can happen if it was a momentary breakpoint | |
1546 | which has since been deleted. */ | |
1547 | continue; | |
1548 | switch (bs->breakpoint_at->type) | |
1549 | { | |
1550 | case bp_breakpoint: | |
11054881 | 1551 | case bp_hardware_breakpoint: |
cabd4da6 JK |
1552 | case bp_until: |
1553 | case bp_finish: | |
1554 | if (bs->stop) | |
1555 | { | |
1556 | if (bs->print) | |
1557 | bs_class = bp_noisy; | |
1558 | else | |
1559 | bs_class = bp_silent; | |
1560 | } | |
1561 | else | |
1562 | bs_class = bp_nostop; | |
1563 | break; | |
1564 | case bp_watchpoint: | |
999dd04b | 1565 | case bp_hardware_watchpoint: |
11054881 KH |
1566 | case bp_read_watchpoint: |
1567 | case bp_access_watchpoint: | |
cabd4da6 JK |
1568 | if (bs->stop) |
1569 | { | |
1570 | if (bs->print) | |
1571 | bs_class = wp_noisy; | |
1572 | else | |
1573 | bs_class = wp_silent; | |
1574 | } | |
1575 | else | |
fe675038 JK |
1576 | /* There was a watchpoint, but we're not stopping. This requires |
1577 | no further action. */ | |
1578 | bs_class = no_effect; | |
cabd4da6 JK |
1579 | break; |
1580 | case bp_longjmp: | |
1581 | bs_class = long_jump; | |
1582 | break; | |
1583 | case bp_longjmp_resume: | |
1584 | bs_class = long_resume; | |
1585 | break; | |
fe675038 | 1586 | case bp_step_resume: |
fe675038 JK |
1587 | if (bs->stop) |
1588 | { | |
d7e7e851 | 1589 | bs_class = step_resume; |
fe675038 JK |
1590 | } |
1591 | else | |
1592 | /* It is for the wrong frame. */ | |
1593 | bs_class = bp_nostop; | |
bcc37718 JK |
1594 | break; |
1595 | case bp_through_sigtramp: | |
1596 | bs_class = through_sig; | |
fe675038 | 1597 | break; |
999dd04b JL |
1598 | case bp_watchpoint_scope: |
1599 | bs_class = bp_nostop; | |
1600 | break; | |
1601 | ||
84d59861 JK |
1602 | case bp_call_dummy: |
1603 | /* Make sure the action is stop (silent or noisy), so infrun.c | |
1604 | pops the dummy frame. */ | |
1605 | bs_class = bp_silent; | |
1606 | retval.call_dummy = 1; | |
bb7b3800 | 1607 | break; |
cabd4da6 JK |
1608 | } |
1609 | current_action = table[(int)bs_class][(int)current_action]; | |
1610 | } | |
84d59861 JK |
1611 | retval.main_action = current_action; |
1612 | return retval; | |
cabd4da6 | 1613 | } |
bd5635a1 | 1614 | |
30875e1c SG |
1615 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
1616 | without hardware support). This isn't related to a specific bpstat, | |
1617 | just to things like whether watchpoints are set. */ | |
1618 | ||
bd5635a1 RP |
1619 | int |
1620 | bpstat_should_step () | |
1621 | { | |
1622 | struct breakpoint *b; | |
1623 | ALL_BREAKPOINTS (b) | |
30875e1c | 1624 | if (b->enable == enabled && b->type == bp_watchpoint) |
bd5635a1 RP |
1625 | return 1; |
1626 | return 0; | |
1627 | } | |
1628 | \f | |
1629 | /* Print information on breakpoint number BNUM, or -1 if all. | |
1630 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
1631 | is nonzero, process only watchpoints. */ | |
1632 | ||
1633 | static void | |
c8950965 | 1634 | breakpoint_1 (bnum, allflag) |
bd5635a1 | 1635 | int bnum; |
80ba48f5 | 1636 | int allflag; |
bd5635a1 RP |
1637 | { |
1638 | register struct breakpoint *b; | |
1639 | register struct command_line *l; | |
1640 | register struct symbol *sym; | |
1641 | CORE_ADDR last_addr = (CORE_ADDR)-1; | |
30875e1c | 1642 | int found_a_breakpoint = 0; |
11054881 KH |
1643 | static char *bptypes[] = {"breakpoint", "hw breakpoint", |
1644 | "until", "finish", "watchpoint", | |
1645 | "hw watchpoint", "read watchpoint", | |
1646 | "acc watchpoint", "longjmp", | |
999dd04b JL |
1647 | "longjmp resume", "step resume", |
1648 | "watchpoint scope", "call dummy" }; | |
80ba48f5 | 1649 | static char *bpdisps[] = {"del", "dis", "keep"}; |
30875e1c | 1650 | static char bpenables[] = "ny"; |
0a62ff36 | 1651 | char wrap_indent[80]; |
30875e1c | 1652 | |
bd5635a1 | 1653 | ALL_BREAKPOINTS (b) |
30875e1c SG |
1654 | if (bnum == -1 |
1655 | || bnum == b->number) | |
bd5635a1 | 1656 | { |
80ba48f5 SG |
1657 | /* We only print out user settable breakpoints unless the allflag is set. */ |
1658 | if (!allflag | |
1659 | && b->type != bp_breakpoint | |
11054881 | 1660 | && b->type != bp_hardware_breakpoint |
999dd04b | 1661 | && b->type != bp_watchpoint |
11054881 KH |
1662 | && b->type != bp_read_watchpoint |
1663 | && b->type != bp_access_watchpoint | |
999dd04b | 1664 | && b->type != bp_hardware_watchpoint) |
80ba48f5 SG |
1665 | continue; |
1666 | ||
30875e1c | 1667 | if (!found_a_breakpoint++) |
47ebe8fd | 1668 | { |
f2d9c058 KH |
1669 | annotate_breakpoints_headers (); |
1670 | ||
1671 | annotate_field (0); | |
1672 | printf_filtered ("Num "); | |
1673 | annotate_field (1); | |
1674 | printf_filtered ("Type "); | |
1675 | annotate_field (2); | |
1676 | printf_filtered ("Disp "); | |
1677 | annotate_field (3); | |
1678 | printf_filtered ("Enb "); | |
1679 | if (addressprint) | |
1680 | { | |
1681 | annotate_field (4); | |
1682 | printf_filtered ("Address "); | |
1683 | } | |
1684 | annotate_field (5); | |
1685 | printf_filtered ("What\n"); | |
1686 | ||
1687 | annotate_breakpoints_table (); | |
1688 | } | |
1689 | ||
1690 | annotate_record (); | |
1691 | annotate_field (0); | |
1692 | printf_filtered ("%-3d ", b->number); | |
1693 | annotate_field (1); | |
1694 | printf_filtered ("%-14s ", bptypes[(int)b->type]); | |
1695 | annotate_field (2); | |
1696 | printf_filtered ("%-4s ", bpdisps[(int)b->disposition]); | |
1697 | annotate_field (3); | |
47ebe8fd JK |
1698 | printf_filtered ("%-3c ", bpenables[(int)b->enable]); |
1699 | ||
0a62ff36 JK |
1700 | strcpy (wrap_indent, " "); |
1701 | if (addressprint) | |
1702 | strcat (wrap_indent, " "); | |
30875e1c | 1703 | switch (b->type) |
bd5635a1 | 1704 | { |
30875e1c | 1705 | case bp_watchpoint: |
999dd04b | 1706 | case bp_hardware_watchpoint: |
11054881 KH |
1707 | case bp_read_watchpoint: |
1708 | case bp_access_watchpoint: | |
47ebe8fd JK |
1709 | /* Field 4, the address, is omitted (which makes the columns |
1710 | not line up too nicely with the headers, but the effect | |
1711 | is relatively readable). */ | |
9f577285 | 1712 | annotate_field (5); |
199b2450 | 1713 | print_expression (b->exp, gdb_stdout); |
30875e1c | 1714 | break; |
84d59861 | 1715 | |
30875e1c | 1716 | case bp_breakpoint: |
11054881 | 1717 | case bp_hardware_breakpoint: |
80ba48f5 SG |
1718 | case bp_until: |
1719 | case bp_finish: | |
1720 | case bp_longjmp: | |
1721 | case bp_longjmp_resume: | |
84d59861 | 1722 | case bp_step_resume: |
bcc37718 | 1723 | case bp_through_sigtramp: |
999dd04b | 1724 | case bp_watchpoint_scope: |
bb7b3800 | 1725 | case bp_call_dummy: |
bd5635a1 | 1726 | if (addressprint) |
47ebe8fd | 1727 | { |
f2d9c058 | 1728 | annotate_field (4); |
47ebe8fd JK |
1729 | /* FIXME-32x64: need a print_address_numeric with |
1730 | field width */ | |
1731 | printf_filtered | |
1732 | ("%s ", | |
1733 | local_hex_string_custom | |
1734 | ((unsigned long) b->address, "08l")); | |
1735 | } | |
1736 | ||
f2d9c058 | 1737 | annotate_field (5); |
bd5635a1 RP |
1738 | |
1739 | last_addr = b->address; | |
d889f6b7 | 1740 | if (b->source_file) |
bd5635a1 RP |
1741 | { |
1742 | sym = find_pc_function (b->address); | |
1743 | if (sym) | |
1744 | { | |
199b2450 TL |
1745 | fputs_filtered ("in ", gdb_stdout); |
1746 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
0a62ff36 | 1747 | wrap_here (wrap_indent); |
199b2450 | 1748 | fputs_filtered (" at ", gdb_stdout); |
bd5635a1 | 1749 | } |
199b2450 | 1750 | fputs_filtered (b->source_file, gdb_stdout); |
bd5635a1 RP |
1751 | printf_filtered (":%d", b->line_number); |
1752 | } | |
1753 | else | |
199b2450 | 1754 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); |
fee933f1 | 1755 | break; |
bd5635a1 RP |
1756 | } |
1757 | ||
1758 | printf_filtered ("\n"); | |
1759 | ||
1760 | if (b->frame) | |
833e0d94 | 1761 | { |
f2d9c058 | 1762 | annotate_field (6); |
47ebe8fd | 1763 | |
833e0d94 | 1764 | printf_filtered ("\tstop only in stack frame at "); |
d24c0599 | 1765 | print_address_numeric (b->frame, 1, gdb_stdout); |
833e0d94 | 1766 | printf_filtered ("\n"); |
bcc37718 | 1767 | } |
47ebe8fd | 1768 | |
bd5635a1 RP |
1769 | if (b->cond) |
1770 | { | |
f2d9c058 | 1771 | annotate_field (7); |
47ebe8fd | 1772 | |
bd5635a1 | 1773 | printf_filtered ("\tstop only if "); |
199b2450 | 1774 | print_expression (b->cond, gdb_stdout); |
bd5635a1 RP |
1775 | printf_filtered ("\n"); |
1776 | } | |
47ebe8fd | 1777 | |
9f577285 SS |
1778 | if (show_breakpoint_hit_counts && b->hit_count) |
1779 | { | |
1780 | /* FIXME should make an annotation for this */ | |
1781 | ||
1782 | printf_filtered ("\tbreakpoint already hit %d times\n", | |
1783 | b->hit_count); | |
1784 | } | |
1785 | ||
bd5635a1 | 1786 | if (b->ignore_count) |
47ebe8fd | 1787 | { |
f2d9c058 | 1788 | annotate_field (8); |
47ebe8fd JK |
1789 | |
1790 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
1791 | } | |
1792 | ||
bd5635a1 | 1793 | if ((l = b->commands)) |
47ebe8fd | 1794 | { |
f2d9c058 | 1795 | annotate_field (9); |
47ebe8fd JK |
1796 | |
1797 | while (l) | |
1798 | { | |
1799 | fputs_filtered ("\t", gdb_stdout); | |
1800 | fputs_filtered (l->line, gdb_stdout); | |
1801 | fputs_filtered ("\n", gdb_stdout); | |
1802 | l = l->next; | |
1803 | } | |
1804 | } | |
bd5635a1 RP |
1805 | } |
1806 | ||
fee933f1 RP |
1807 | if (!found_a_breakpoint) |
1808 | { | |
1809 | if (bnum == -1) | |
1810 | printf_filtered ("No breakpoints or watchpoints.\n"); | |
1811 | else | |
1812 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); | |
1813 | } | |
30875e1c SG |
1814 | else |
1815 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
1816 | that a comparison of an unsigned with -1 is always false. */ | |
1817 | if (last_addr != (CORE_ADDR)-1) | |
1818 | set_next_address (last_addr); | |
47ebe8fd | 1819 | |
f2d9c058 | 1820 | annotate_breakpoints_table_end (); |
bd5635a1 RP |
1821 | } |
1822 | ||
bdbd5f50 | 1823 | /* ARGSUSED */ |
bd5635a1 RP |
1824 | static void |
1825 | breakpoints_info (bnum_exp, from_tty) | |
1826 | char *bnum_exp; | |
1827 | int from_tty; | |
1828 | { | |
1829 | int bnum = -1; | |
1830 | ||
1831 | if (bnum_exp) | |
1832 | bnum = parse_and_eval_address (bnum_exp); | |
1833 | ||
c8950965 | 1834 | breakpoint_1 (bnum, 0); |
80ba48f5 SG |
1835 | } |
1836 | ||
9b280a7f JG |
1837 | #if MAINTENANCE_CMDS |
1838 | ||
80ba48f5 SG |
1839 | /* ARGSUSED */ |
1840 | static void | |
9b280a7f | 1841 | maintenance_info_breakpoints (bnum_exp, from_tty) |
80ba48f5 SG |
1842 | char *bnum_exp; |
1843 | int from_tty; | |
1844 | { | |
1845 | int bnum = -1; | |
1846 | ||
1847 | if (bnum_exp) | |
1848 | bnum = parse_and_eval_address (bnum_exp); | |
1849 | ||
c8950965 | 1850 | breakpoint_1 (bnum, 1); |
bd5635a1 RP |
1851 | } |
1852 | ||
9b280a7f JG |
1853 | #endif |
1854 | ||
bd5635a1 RP |
1855 | /* Print a message describing any breakpoints set at PC. */ |
1856 | ||
1857 | static void | |
1858 | describe_other_breakpoints (pc) | |
1859 | register CORE_ADDR pc; | |
1860 | { | |
1861 | register int others = 0; | |
1862 | register struct breakpoint *b; | |
1863 | ||
1864 | ALL_BREAKPOINTS (b) | |
1865 | if (b->address == pc) | |
1866 | others++; | |
1867 | if (others > 0) | |
1868 | { | |
833e0d94 | 1869 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); |
bd5635a1 RP |
1870 | ALL_BREAKPOINTS (b) |
1871 | if (b->address == pc) | |
1872 | { | |
1873 | others--; | |
833e0d94 JK |
1874 | printf_filtered |
1875 | ("%d%s%s ", | |
1876 | b->number, | |
1877 | (b->enable == disabled) ? " (disabled)" : "", | |
1878 | (others > 1) ? "," : ((others == 1) ? " and" : "")); | |
bd5635a1 | 1879 | } |
833e0d94 | 1880 | printf_filtered ("also set at pc "); |
d24c0599 | 1881 | print_address_numeric (pc, 1, gdb_stdout); |
833e0d94 | 1882 | printf_filtered (".\n"); |
bd5635a1 RP |
1883 | } |
1884 | } | |
1885 | \f | |
1886 | /* Set the default place to put a breakpoint | |
1887 | for the `break' command with no arguments. */ | |
1888 | ||
1889 | void | |
1890 | set_default_breakpoint (valid, addr, symtab, line) | |
1891 | int valid; | |
1892 | CORE_ADDR addr; | |
1893 | struct symtab *symtab; | |
1894 | int line; | |
1895 | { | |
1896 | default_breakpoint_valid = valid; | |
1897 | default_breakpoint_address = addr; | |
1898 | default_breakpoint_symtab = symtab; | |
1899 | default_breakpoint_line = line; | |
1900 | } | |
1901 | ||
1902 | /* Rescan breakpoints at address ADDRESS, | |
1903 | marking the first one as "first" and any others as "duplicates". | |
1904 | This is so that the bpt instruction is only inserted once. */ | |
1905 | ||
1906 | static void | |
1907 | check_duplicates (address) | |
1908 | CORE_ADDR address; | |
1909 | { | |
1910 | register struct breakpoint *b; | |
1911 | register int count = 0; | |
1912 | ||
30875e1c | 1913 | if (address == 0) /* Watchpoints are uninteresting */ |
f266e564 JK |
1914 | return; |
1915 | ||
bd5635a1 RP |
1916 | ALL_BREAKPOINTS (b) |
1917 | if (b->enable != disabled && b->address == address) | |
1918 | { | |
1919 | count++; | |
1920 | b->duplicate = count > 1; | |
1921 | } | |
1922 | } | |
1923 | ||
1924 | /* Low level routine to set a breakpoint. | |
1925 | Takes as args the three things that every breakpoint must have. | |
1926 | Returns the breakpoint object so caller can set other things. | |
1927 | Does not set the breakpoint number! | |
f266e564 JK |
1928 | Does not print anything. |
1929 | ||
1930 | ==> This routine should not be called if there is a chance of later | |
1931 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
1932 | your arguments BEFORE calling this routine! */ | |
bd5635a1 RP |
1933 | |
1934 | static struct breakpoint * | |
1935 | set_raw_breakpoint (sal) | |
1936 | struct symtab_and_line sal; | |
1937 | { | |
1938 | register struct breakpoint *b, *b1; | |
1939 | ||
1940 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4ed3a9ea | 1941 | memset (b, 0, sizeof (*b)); |
bd5635a1 | 1942 | b->address = sal.pc; |
d889f6b7 JK |
1943 | if (sal.symtab == NULL) |
1944 | b->source_file = NULL; | |
1945 | else | |
1946 | b->source_file = savestring (sal.symtab->filename, | |
1947 | strlen (sal.symtab->filename)); | |
199b2450 | 1948 | b->thread = -1; |
bd5635a1 RP |
1949 | b->line_number = sal.line; |
1950 | b->enable = enabled; | |
1951 | b->next = 0; | |
1952 | b->silent = 0; | |
1953 | b->ignore_count = 0; | |
1954 | b->commands = NULL; | |
30875e1c | 1955 | b->frame = 0; |
bd5635a1 RP |
1956 | |
1957 | /* Add this breakpoint to the end of the chain | |
1958 | so that a list of breakpoints will come out in order | |
1959 | of increasing numbers. */ | |
1960 | ||
1961 | b1 = breakpoint_chain; | |
1962 | if (b1 == 0) | |
1963 | breakpoint_chain = b; | |
1964 | else | |
1965 | { | |
1966 | while (b1->next) | |
1967 | b1 = b1->next; | |
1968 | b1->next = b; | |
1969 | } | |
1970 | ||
1971 | check_duplicates (sal.pc); | |
6c803036 | 1972 | breakpoints_changed (); |
bd5635a1 RP |
1973 | |
1974 | return b; | |
1975 | } | |
1976 | ||
30875e1c | 1977 | static void |
80ba48f5 | 1978 | create_longjmp_breakpoint(func_name) |
30875e1c | 1979 | char *func_name; |
30875e1c | 1980 | { |
30875e1c SG |
1981 | struct symtab_and_line sal; |
1982 | struct breakpoint *b; | |
80ba48f5 | 1983 | static int internal_breakpoint_number = -1; |
30875e1c | 1984 | |
30875e1c SG |
1985 | if (func_name != NULL) |
1986 | { | |
1987 | struct minimal_symbol *m; | |
1988 | ||
1989 | m = lookup_minimal_symbol(func_name, (struct objfile *)NULL); | |
1990 | if (m) | |
2d313932 | 1991 | sal.pc = SYMBOL_VALUE_ADDRESS (m); |
30875e1c SG |
1992 | else |
1993 | return; | |
1994 | } | |
1995 | else | |
1996 | sal.pc = 0; | |
1997 | ||
1998 | sal.symtab = NULL; | |
1999 | sal.line = 0; | |
30875e1c | 2000 | |
80ba48f5 | 2001 | b = set_raw_breakpoint(sal); |
30875e1c SG |
2002 | if (!b) return; |
2003 | ||
80ba48f5 | 2004 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; |
30875e1c SG |
2005 | b->disposition = donttouch; |
2006 | b->enable = disabled; | |
2007 | b->silent = 1; | |
80ba48f5 SG |
2008 | if (func_name) |
2009 | b->addr_string = strsave(func_name); | |
2010 | b->number = internal_breakpoint_number--; | |
30875e1c | 2011 | } |
30875e1c SG |
2012 | |
2013 | /* Call this routine when stepping and nexting to enable a breakpoint if we do | |
2014 | a longjmp(). When we hit that breakpoint, call | |
2015 | set_longjmp_resume_breakpoint() to figure out where we are going. */ | |
2016 | ||
2017 | void | |
2018 | enable_longjmp_breakpoint() | |
2019 | { | |
80ba48f5 SG |
2020 | register struct breakpoint *b; |
2021 | ||
2022 | ALL_BREAKPOINTS (b) | |
2023 | if (b->type == bp_longjmp) | |
9b280a7f JG |
2024 | { |
2025 | b->enable = enabled; | |
2026 | check_duplicates (b->address); | |
2027 | } | |
30875e1c SG |
2028 | } |
2029 | ||
2030 | void | |
2031 | disable_longjmp_breakpoint() | |
2032 | { | |
80ba48f5 SG |
2033 | register struct breakpoint *b; |
2034 | ||
2035 | ALL_BREAKPOINTS (b) | |
9b280a7f | 2036 | if ( b->type == bp_longjmp |
80ba48f5 | 2037 | || b->type == bp_longjmp_resume) |
9b280a7f JG |
2038 | { |
2039 | b->enable = disabled; | |
2040 | check_duplicates (b->address); | |
2041 | } | |
30875e1c SG |
2042 | } |
2043 | ||
11054881 KH |
2044 | int |
2045 | hw_breakpoint_used_count() | |
2046 | { | |
2047 | register struct breakpoint *b; | |
2048 | int i = 0; | |
2049 | ||
2050 | ALL_BREAKPOINTS (b) | |
2051 | { | |
2052 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
2053 | i++; | |
2054 | } | |
2055 | ||
2056 | return i; | |
2057 | } | |
2058 | ||
2059 | int | |
2060 | hw_watchpoint_used_count(type, other_type_used) | |
2061 | enum bptype type; | |
2062 | int *other_type_used; | |
2063 | { | |
2064 | register struct breakpoint *b; | |
2065 | int i = 0; | |
2066 | ||
2067 | *other_type_used = 0; | |
2068 | ALL_BREAKPOINTS (b) | |
2069 | { | |
2070 | if (b->enable == enabled) | |
2071 | { | |
2072 | if (b->type == type) i++; | |
2073 | else if ((b->type == bp_hardware_watchpoint || | |
2074 | b->type == bp_read_watchpoint || | |
2075 | b->type == bp_access_watchpoint) | |
2076 | && b->enable == enabled) | |
2077 | *other_type_used = 1; | |
2078 | } | |
2079 | } | |
2080 | return i; | |
2081 | } | |
2082 | ||
30875e1c SG |
2083 | /* Call this after hitting the longjmp() breakpoint. Use this to set a new |
2084 | breakpoint at the target of the jmp_buf. | |
80ba48f5 SG |
2085 | |
2086 | FIXME - This ought to be done by setting a temporary breakpoint that gets | |
2087 | deleted automatically... | |
30875e1c SG |
2088 | */ |
2089 | ||
2090 | void | |
2091 | set_longjmp_resume_breakpoint(pc, frame) | |
2092 | CORE_ADDR pc; | |
2093 | FRAME frame; | |
2094 | { | |
80ba48f5 SG |
2095 | register struct breakpoint *b; |
2096 | ||
2097 | ALL_BREAKPOINTS (b) | |
2098 | if (b->type == bp_longjmp_resume) | |
2099 | { | |
2100 | b->address = pc; | |
2101 | b->enable = enabled; | |
2102 | if (frame != NULL) | |
2103 | b->frame = FRAME_FP(frame); | |
2104 | else | |
2105 | b->frame = 0; | |
9b280a7f | 2106 | check_duplicates (b->address); |
80ba48f5 SG |
2107 | return; |
2108 | } | |
30875e1c SG |
2109 | } |
2110 | ||
bd5635a1 RP |
2111 | /* Set a breakpoint that will evaporate an end of command |
2112 | at address specified by SAL. | |
2113 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
2114 | ||
30875e1c SG |
2115 | struct breakpoint * |
2116 | set_momentary_breakpoint (sal, frame, type) | |
bd5635a1 RP |
2117 | struct symtab_and_line sal; |
2118 | FRAME frame; | |
30875e1c | 2119 | enum bptype type; |
bd5635a1 RP |
2120 | { |
2121 | register struct breakpoint *b; | |
2122 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
2123 | b->type = type; |
2124 | b->enable = enabled; | |
2125 | b->disposition = donttouch; | |
bd5635a1 | 2126 | b->frame = (frame ? FRAME_FP (frame) : 0); |
30875e1c | 2127 | return b; |
bd5635a1 RP |
2128 | } |
2129 | ||
30875e1c | 2130 | #if 0 |
bd5635a1 RP |
2131 | void |
2132 | clear_momentary_breakpoints () | |
2133 | { | |
2134 | register struct breakpoint *b; | |
2135 | ALL_BREAKPOINTS (b) | |
30875e1c | 2136 | if (b->disposition == delete) |
bd5635a1 RP |
2137 | { |
2138 | delete_breakpoint (b); | |
2139 | break; | |
2140 | } | |
2141 | } | |
30875e1c | 2142 | #endif |
bd5635a1 RP |
2143 | \f |
2144 | /* Tell the user we have just set a breakpoint B. */ | |
9f577285 | 2145 | |
bd5635a1 RP |
2146 | static void |
2147 | mention (b) | |
2148 | struct breakpoint *b; | |
2149 | { | |
9f577285 SS |
2150 | int say_where = 0; |
2151 | ||
30875e1c | 2152 | switch (b->type) |
bd5635a1 | 2153 | { |
30875e1c | 2154 | case bp_watchpoint: |
bd5635a1 | 2155 | printf_filtered ("Watchpoint %d: ", b->number); |
199b2450 | 2156 | print_expression (b->exp, gdb_stdout); |
30875e1c | 2157 | break; |
999dd04b JL |
2158 | case bp_hardware_watchpoint: |
2159 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
2160 | print_expression (b->exp, gdb_stdout); | |
2161 | break; | |
11054881 KH |
2162 | case bp_read_watchpoint: |
2163 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
2164 | print_expression (b->exp, gdb_stdout); | |
2165 | break; | |
2166 | case bp_access_watchpoint: | |
2167 | printf_filtered ("Hardware access(read/write) watchpoint %d: ",b->number); | |
2168 | print_expression (b->exp, gdb_stdout); | |
2169 | break; | |
30875e1c | 2170 | case bp_breakpoint: |
9f577285 SS |
2171 | printf_filtered ("Breakpoint %d", b->number); |
2172 | say_where = 1; | |
51b57ded | 2173 | break; |
11054881 | 2174 | case bp_hardware_breakpoint: |
9f577285 SS |
2175 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
2176 | say_where = 1; | |
11054881 | 2177 | break; |
51b57ded FF |
2178 | case bp_until: |
2179 | case bp_finish: | |
2180 | case bp_longjmp: | |
2181 | case bp_longjmp_resume: | |
fee933f1 | 2182 | case bp_step_resume: |
bcc37718 | 2183 | case bp_through_sigtramp: |
199b2450 | 2184 | case bp_call_dummy: |
999dd04b | 2185 | case bp_watchpoint_scope: |
51b57ded | 2186 | break; |
bd5635a1 | 2187 | } |
9f577285 SS |
2188 | if (say_where) |
2189 | { | |
2190 | if (addressprint || b->source_file == NULL) | |
2191 | { | |
2192 | printf_filtered (" at "); | |
2193 | print_address_numeric (b->address, 1, gdb_stdout); | |
2194 | } | |
2195 | if (b->source_file) | |
2196 | printf_filtered (": file %s, line %d.", | |
2197 | b->source_file, b->line_number); | |
2198 | } | |
bd5635a1 RP |
2199 | printf_filtered ("\n"); |
2200 | } | |
2201 | ||
2202 | #if 0 | |
2203 | /* Nobody calls this currently. */ | |
2204 | /* Set a breakpoint from a symtab and line. | |
2205 | If TEMPFLAG is nonzero, it is a temporary breakpoint. | |
2206 | ADDR_STRING is a malloc'd string holding the name of where we are | |
2207 | setting the breakpoint. This is used later to re-set it after the | |
2208 | program is relinked and symbols are reloaded. | |
2209 | Print the same confirmation messages that the breakpoint command prints. */ | |
2210 | ||
2211 | void | |
2212 | set_breakpoint (s, line, tempflag, addr_string) | |
2213 | struct symtab *s; | |
2214 | int line; | |
2215 | int tempflag; | |
2216 | char *addr_string; | |
2217 | { | |
2218 | register struct breakpoint *b; | |
2219 | struct symtab_and_line sal; | |
2220 | ||
2221 | sal.symtab = s; | |
2222 | sal.line = line; | |
30875e1c SG |
2223 | sal.pc = 0; |
2224 | resolve_sal_pc (&sal); /* Might error out */ | |
2225 | describe_other_breakpoints (sal.pc); | |
bd5635a1 | 2226 | |
30875e1c SG |
2227 | b = set_raw_breakpoint (sal); |
2228 | set_breakpoint_count (breakpoint_count + 1); | |
2229 | b->number = breakpoint_count; | |
2230 | b->type = bp_breakpoint; | |
2231 | b->cond = 0; | |
2232 | b->addr_string = addr_string; | |
2233 | b->enable = enabled; | |
2234 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 | 2235 | |
30875e1c | 2236 | mention (b); |
bd5635a1 | 2237 | } |
30875e1c | 2238 | #endif /* 0 */ |
bd5635a1 RP |
2239 | \f |
2240 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
11054881 KH |
2241 | flag: first bit : 0 non-temporary, 1 temporary. |
2242 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
bd5635a1 RP |
2243 | |
2244 | static void | |
11054881 | 2245 | break_command_1 (arg, flag, from_tty) |
bd5635a1 | 2246 | char *arg; |
11054881 | 2247 | int flag, from_tty; |
bd5635a1 | 2248 | { |
11054881 | 2249 | int tempflag, hardwareflag; |
bd5635a1 RP |
2250 | struct symtabs_and_lines sals; |
2251 | struct symtab_and_line sal; | |
2252 | register struct expression *cond = 0; | |
2253 | register struct breakpoint *b; | |
2254 | ||
2255 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
2256 | char *cond_start = NULL; | |
fee933f1 | 2257 | char *cond_end = NULL; |
bd5635a1 RP |
2258 | /* Pointers in arg to the start, and one past the end, |
2259 | of the address part. */ | |
2260 | char *addr_start = NULL; | |
fee933f1 | 2261 | char *addr_end = NULL; |
d889f6b7 | 2262 | struct cleanup *old_chain; |
fee933f1 | 2263 | struct cleanup *canonical_strings_chain = NULL; |
d889f6b7 | 2264 | char **canonical = (char **)NULL; |
bd5635a1 | 2265 | int i; |
199b2450 | 2266 | int thread; |
bd5635a1 | 2267 | |
11054881 KH |
2268 | hardwareflag = flag & 2; |
2269 | tempflag = flag & 1; | |
2270 | ||
bd5635a1 RP |
2271 | sals.sals = NULL; |
2272 | sals.nelts = 0; | |
2273 | ||
2274 | sal.line = sal.pc = sal.end = 0; | |
2275 | sal.symtab = 0; | |
2276 | ||
2277 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
2278 | ||
2279 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2280 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2281 | { | |
2282 | if (default_breakpoint_valid) | |
2283 | { | |
2284 | sals.sals = (struct symtab_and_line *) | |
2285 | xmalloc (sizeof (struct symtab_and_line)); | |
2286 | sal.pc = default_breakpoint_address; | |
2287 | sal.line = default_breakpoint_line; | |
2288 | sal.symtab = default_breakpoint_symtab; | |
2289 | sals.sals[0] = sal; | |
2290 | sals.nelts = 1; | |
2291 | } | |
2292 | else | |
2293 | error ("No default breakpoint address now."); | |
2294 | } | |
2295 | else | |
2296 | { | |
2297 | addr_start = arg; | |
2298 | ||
2299 | /* Force almost all breakpoints to be in terms of the | |
2300 | current_source_symtab (which is decode_line_1's default). This | |
2301 | should produce the results we want almost all of the time while | |
2302 | leaving default_breakpoint_* alone. */ | |
2303 | if (default_breakpoint_valid | |
2304 | && (!current_source_symtab | |
2305 | || (arg && (*arg == '+' || *arg == '-')))) | |
2306 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2307 | default_breakpoint_line, &canonical); |
bd5635a1 | 2308 | else |
d889f6b7 | 2309 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical); |
bd5635a1 RP |
2310 | |
2311 | addr_end = arg; | |
2312 | } | |
2313 | ||
2314 | if (! sals.nelts) | |
2315 | return; | |
2316 | ||
d889f6b7 JK |
2317 | /* Make sure that all storage allocated in decode_line_1 gets freed in case |
2318 | the following `for' loop errors out. */ | |
2319 | old_chain = make_cleanup (free, sals.sals); | |
2320 | if (canonical != (char **)NULL) | |
2321 | { | |
2322 | make_cleanup (free, canonical); | |
2323 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
2324 | for (i = 0; i < sals.nelts; i++) | |
2325 | { | |
2326 | if (canonical[i] != NULL) | |
2327 | make_cleanup (free, canonical[i]); | |
2328 | } | |
2329 | } | |
2330 | ||
199b2450 TL |
2331 | thread = -1; /* No specific thread yet */ |
2332 | ||
30875e1c SG |
2333 | /* Resolve all line numbers to PC's, and verify that conditions |
2334 | can be parsed, before setting any breakpoints. */ | |
bd5635a1 RP |
2335 | for (i = 0; i < sals.nelts; i++) |
2336 | { | |
199b2450 TL |
2337 | char *tok, *end_tok; |
2338 | int toklen; | |
2339 | ||
30875e1c | 2340 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 | 2341 | |
199b2450 TL |
2342 | tok = arg; |
2343 | ||
2344 | while (tok && *tok) | |
bd5635a1 | 2345 | { |
199b2450 TL |
2346 | while (*tok == ' ' || *tok == '\t') |
2347 | tok++; | |
2348 | ||
2349 | end_tok = tok; | |
2350 | ||
2351 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2352 | end_tok++; | |
2353 | ||
2354 | toklen = end_tok - tok; | |
2355 | ||
2356 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2357 | { | |
2358 | tok = cond_start = end_tok + 1; | |
2359 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
2360 | cond_end = tok; | |
2361 | } | |
2362 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
bd5635a1 | 2363 | { |
199b2450 TL |
2364 | char *tmptok; |
2365 | ||
2366 | tok = end_tok + 1; | |
2367 | tmptok = tok; | |
2368 | thread = strtol (tok, &tok, 0); | |
2369 | if (tok == tmptok) | |
2370 | error ("Junk after thread keyword."); | |
2371 | if (!valid_thread_id (thread)) | |
2372 | error ("Unknown thread %d\n", thread); | |
bd5635a1 RP |
2373 | } |
2374 | else | |
2375 | error ("Junk at end of arguments."); | |
2376 | } | |
bd5635a1 | 2377 | } |
11054881 KH |
2378 | if (hardwareflag) |
2379 | { | |
557f3a0e SS |
2380 | int i, target_resources_ok; |
2381 | ||
2382 | i = hw_breakpoint_used_count (); | |
2383 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
2384 | bp_hardware_breakpoint, i + sals.nelts, 0); | |
11054881 KH |
2385 | if (target_resources_ok == 0) |
2386 | error ("No hardware breakpoint support in the target."); | |
2387 | else if (target_resources_ok < 0) | |
2388 | error ("Hardware breakpoints used exceeds limit."); | |
2389 | } | |
bd5635a1 | 2390 | |
d889f6b7 JK |
2391 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
2392 | if (canonical != (char **)NULL) | |
2393 | discard_cleanups (canonical_strings_chain); | |
2394 | ||
30875e1c | 2395 | /* Now set all the breakpoints. */ |
bd5635a1 RP |
2396 | for (i = 0; i < sals.nelts; i++) |
2397 | { | |
2398 | sal = sals.sals[i]; | |
2399 | ||
2400 | if (from_tty) | |
2401 | describe_other_breakpoints (sal.pc); | |
2402 | ||
2403 | b = set_raw_breakpoint (sal); | |
2404 | set_breakpoint_count (breakpoint_count + 1); | |
2405 | b->number = breakpoint_count; | |
11054881 | 2406 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; |
bd5635a1 | 2407 | b->cond = cond; |
199b2450 | 2408 | b->thread = thread; |
0a97f6c4 | 2409 | |
d889f6b7 JK |
2410 | /* If a canonical line spec is needed use that instead of the |
2411 | command string. */ | |
2412 | if (canonical != (char **)NULL && canonical[i] != NULL) | |
2413 | b->addr_string = canonical[i]; | |
2414 | else if (addr_start) | |
bd5635a1 RP |
2415 | b->addr_string = savestring (addr_start, addr_end - addr_start); |
2416 | if (cond_start) | |
2417 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2418 | ||
30875e1c SG |
2419 | b->enable = enabled; |
2420 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 RP |
2421 | |
2422 | mention (b); | |
2423 | } | |
2424 | ||
2425 | if (sals.nelts > 1) | |
2426 | { | |
833e0d94 JK |
2427 | printf_filtered ("Multiple breakpoints were set.\n"); |
2428 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 2429 | } |
d889f6b7 | 2430 | do_cleanups (old_chain); |
bd5635a1 RP |
2431 | } |
2432 | ||
30875e1c SG |
2433 | /* Helper function for break_command_1 and disassemble_command. */ |
2434 | ||
2435 | void | |
2436 | resolve_sal_pc (sal) | |
2437 | struct symtab_and_line *sal; | |
2438 | { | |
2439 | CORE_ADDR pc; | |
2440 | ||
2441 | if (sal->pc == 0 && sal->symtab != 0) | |
2442 | { | |
2443 | pc = find_line_pc (sal->symtab, sal->line); | |
2444 | if (pc == 0) | |
2445 | error ("No line %d in file \"%s\".", | |
2446 | sal->line, sal->symtab->filename); | |
2447 | sal->pc = pc; | |
2448 | } | |
2449 | } | |
2450 | ||
11054881 KH |
2451 | #define BP_TEMPFLAG 1 |
2452 | #define BP_HARDWAREFLAG 2 | |
bd5635a1 RP |
2453 | void |
2454 | break_command (arg, from_tty) | |
2455 | char *arg; | |
2456 | int from_tty; | |
2457 | { | |
2458 | break_command_1 (arg, 0, from_tty); | |
2459 | } | |
2460 | ||
2461 | static void | |
2462 | tbreak_command (arg, from_tty) | |
2463 | char *arg; | |
2464 | int from_tty; | |
2465 | { | |
11054881 KH |
2466 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
2467 | } | |
2468 | ||
2469 | static void | |
2470 | hbreak_command (arg, from_tty) | |
2471 | char *arg; | |
2472 | int from_tty; | |
2473 | { | |
2474 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
2475 | } | |
2476 | ||
2477 | static void | |
2478 | thbreak_command (arg, from_tty) | |
2479 | char *arg; | |
2480 | int from_tty; | |
2481 | { | |
2482 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
bd5635a1 RP |
2483 | } |
2484 | ||
bdbd5f50 | 2485 | /* ARGSUSED */ |
11054881 KH |
2486 | /* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) |
2487 | */ | |
bd5635a1 | 2488 | static void |
11054881 | 2489 | watch_command_1 (arg, accessflag, from_tty) |
bd5635a1 | 2490 | char *arg; |
11054881 | 2491 | int accessflag; |
bd5635a1 RP |
2492 | int from_tty; |
2493 | { | |
2494 | struct breakpoint *b; | |
2495 | struct symtab_and_line sal; | |
f266e564 JK |
2496 | struct expression *exp; |
2497 | struct block *exp_valid_block; | |
11054881 | 2498 | struct value *val, *mark; |
999dd04b | 2499 | FRAME frame, prev_frame; |
11054881 KH |
2500 | char *exp_start = NULL; |
2501 | char *exp_end = NULL; | |
2502 | char *tok, *end_tok; | |
2503 | int toklen; | |
2504 | char *cond_start = NULL; | |
2505 | char *cond_end = NULL; | |
2506 | struct expression *cond = NULL; | |
2507 | int i, other_type_used, target_resources_ok; | |
2508 | enum bptype bp_type; | |
2509 | int mem_cnt = 0; | |
bd5635a1 | 2510 | |
30875e1c | 2511 | sal.pc = 0; |
bd5635a1 RP |
2512 | sal.symtab = NULL; |
2513 | sal.line = 0; | |
2514 | ||
f266e564 JK |
2515 | /* Parse arguments. */ |
2516 | innermost_block = NULL; | |
11054881 KH |
2517 | exp_start = arg; |
2518 | exp = parse_exp_1 (&arg, 0, 0); | |
2519 | exp_end = arg; | |
f266e564 | 2520 | exp_valid_block = innermost_block; |
11054881 | 2521 | mark = value_mark (); |
f266e564 JK |
2522 | val = evaluate_expression (exp); |
2523 | release_value (val); | |
2d313932 JK |
2524 | if (VALUE_LAZY (val)) |
2525 | value_fetch_lazy (val); | |
f266e564 | 2526 | |
11054881 KH |
2527 | tok = arg; |
2528 | while (*tok == ' ' || *tok == '\t') | |
2529 | tok++; | |
2530 | end_tok = tok; | |
2531 | ||
2532 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2533 | end_tok++; | |
2534 | ||
2535 | toklen = end_tok - tok; | |
2536 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2537 | { | |
2538 | tok = cond_start = end_tok + 1; | |
2539 | cond = parse_exp_1 (&tok, 0, 0); | |
2540 | cond_end = tok; | |
2541 | } | |
2542 | if (*tok) | |
2543 | error("Junk at end of command."); | |
2544 | ||
2545 | if (accessflag == 1) bp_type = bp_read_watchpoint; | |
2546 | else if (accessflag == 2) bp_type = bp_access_watchpoint; | |
2547 | else bp_type = bp_hardware_watchpoint; | |
2548 | ||
2549 | mem_cnt = can_use_hardware_watchpoint (val); | |
2550 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
2551 | error ("Expression cannot be implemented with read/access watchpoint."); | |
2552 | if (mem_cnt != 0) { | |
2553 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
2554 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
2555 | bp_type, i + mem_cnt, other_type_used); | |
2556 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) | |
2557 | error ("Target does not have this type of hardware watchpoint support."); | |
2558 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) | |
2559 | error ("Target resources have been allocated for other types of watchpoints."); | |
2560 | } | |
2561 | ||
f266e564 | 2562 | /* Now set up the breakpoint. */ |
bd5635a1 RP |
2563 | b = set_raw_breakpoint (sal); |
2564 | set_breakpoint_count (breakpoint_count + 1); | |
2565 | b->number = breakpoint_count; | |
30875e1c | 2566 | b->disposition = donttouch; |
f266e564 JK |
2567 | b->exp = exp; |
2568 | b->exp_valid_block = exp_valid_block; | |
11054881 | 2569 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
f266e564 | 2570 | b->val = val; |
11054881 KH |
2571 | b->cond = cond; |
2572 | if (cond_start) | |
2573 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2574 | else | |
2575 | b->cond_string = 0; | |
2576 | ||
999dd04b JL |
2577 | frame = block_innermost_frame (exp_valid_block); |
2578 | if (frame) | |
2579 | { | |
2580 | prev_frame = get_prev_frame (frame); | |
2581 | b->watchpoint_frame = FRAME_FP (frame); | |
2582 | } | |
2583 | else | |
9e8db445 | 2584 | b->watchpoint_frame = (CORE_ADDR)0; |
999dd04b | 2585 | |
11054881 KH |
2586 | if (mem_cnt && target_resources_ok > 0) |
2587 | b->type = bp_type; | |
999dd04b JL |
2588 | else |
2589 | b->type = bp_watchpoint; | |
2590 | ||
2591 | /* If the expression is "local", then set up a "watchpoint scope" | |
2592 | breakpoint at the point where we've left the scope of the watchpoint | |
2593 | expression. */ | |
2594 | if (innermost_block) | |
2595 | { | |
2596 | struct breakpoint *scope_breakpoint; | |
2597 | struct symtab_and_line scope_sal; | |
2598 | ||
2599 | if (prev_frame) | |
2600 | { | |
2601 | scope_sal.pc = get_frame_pc (prev_frame); | |
2602 | scope_sal.symtab = NULL; | |
2603 | scope_sal.line = 0; | |
2604 | ||
2605 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
2606 | set_breakpoint_count (breakpoint_count + 1); | |
2607 | scope_breakpoint->number = breakpoint_count; | |
2608 | ||
2609 | scope_breakpoint->type = bp_watchpoint_scope; | |
2610 | scope_breakpoint->enable = enabled; | |
2611 | ||
2612 | /* Automatically delete the breakpoint when it hits. */ | |
2613 | scope_breakpoint->disposition = delete; | |
2614 | ||
2615 | /* Only break in the proper frame (help with recursion). */ | |
2616 | scope_breakpoint->frame = prev_frame->frame; | |
2617 | ||
2618 | /* Set the address at which we will stop. */ | |
2619 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
2620 | ||
2621 | /* The scope breakpoint is related to the watchpoint. We | |
2622 | will need to act on them together. */ | |
2623 | b->related_breakpoint = scope_breakpoint; | |
2624 | } | |
2625 | } | |
11054881 | 2626 | value_free_to_mark (mark); |
bd5635a1 RP |
2627 | mention (b); |
2628 | } | |
999dd04b | 2629 | |
11054881 KH |
2630 | /* Return count of locations need to be watched and can be handled |
2631 | in hardware. If the watchpoint can not be handled | |
999dd04b JL |
2632 | in hardware return zero. */ |
2633 | ||
2634 | static int | |
11054881 KH |
2635 | can_use_hardware_watchpoint (v) |
2636 | struct value *v; | |
999dd04b | 2637 | { |
11054881 | 2638 | int found_memory_cnt = 0; |
999dd04b JL |
2639 | |
2640 | /* Make sure all the intermediate values are in memory. Also make sure | |
2641 | we found at least one memory expression. Guards against watch 0x12345, | |
2642 | which is meaningless, but could cause errors if one tries to insert a | |
2643 | hardware watchpoint for the constant expression. */ | |
11054881 | 2644 | for ( ; v; v = v->next) |
999dd04b | 2645 | { |
11054881 KH |
2646 | if (v->lval == lval_memory) |
2647 | { | |
2648 | if (TYPE_LENGTH (VALUE_TYPE (v)) <= REGISTER_SIZE) | |
2649 | found_memory_cnt++; | |
2650 | } | |
2651 | else if (v->lval != not_lval && v->modifiable == 0) | |
999dd04b | 2652 | return 0; |
999dd04b JL |
2653 | } |
2654 | ||
2655 | /* The expression itself looks suitable for using a hardware | |
2656 | watchpoint, but give the target machine a chance to reject it. */ | |
11054881 KH |
2657 | return found_memory_cnt; |
2658 | } | |
2659 | ||
2660 | static void watch_command (arg, from_tty) | |
2661 | char *arg; | |
2662 | int from_tty; | |
2663 | { | |
2664 | watch_command_1 (arg, 0, from_tty); | |
2665 | } | |
2666 | ||
2667 | static void rwatch_command (arg, from_tty) | |
2668 | char *arg; | |
2669 | int from_tty; | |
2670 | { | |
2671 | watch_command_1 (arg, 1, from_tty); | |
2672 | } | |
2673 | ||
2674 | static void awatch_command (arg, from_tty) | |
2675 | char *arg; | |
2676 | int from_tty; | |
2677 | { | |
2678 | watch_command_1 (arg, 2, from_tty); | |
999dd04b JL |
2679 | } |
2680 | ||
bd5635a1 RP |
2681 | \f |
2682 | /* | |
2683 | * Helper routine for the until_command routine in infcmd.c. Here | |
2684 | * because it uses the mechanisms of breakpoints. | |
2685 | */ | |
bdbd5f50 | 2686 | /* ARGSUSED */ |
bd5635a1 RP |
2687 | void |
2688 | until_break_command (arg, from_tty) | |
2689 | char *arg; | |
2690 | int from_tty; | |
2691 | { | |
2692 | struct symtabs_and_lines sals; | |
2693 | struct symtab_and_line sal; | |
2694 | FRAME prev_frame = get_prev_frame (selected_frame); | |
30875e1c SG |
2695 | struct breakpoint *breakpoint; |
2696 | struct cleanup *old_chain; | |
bd5635a1 RP |
2697 | |
2698 | clear_proceed_status (); | |
2699 | ||
2700 | /* Set a breakpoint where the user wants it and at return from | |
2701 | this function */ | |
2702 | ||
2703 | if (default_breakpoint_valid) | |
2704 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2705 | default_breakpoint_line, (char ***)NULL); |
bd5635a1 | 2706 | else |
d889f6b7 | 2707 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
2708 | |
2709 | if (sals.nelts != 1) | |
2710 | error ("Couldn't get information on specified line."); | |
2711 | ||
2712 | sal = sals.sals[0]; | |
c8950965 | 2713 | free ((PTR)sals.sals); /* malloc'd, so freed */ |
bd5635a1 RP |
2714 | |
2715 | if (*arg) | |
2716 | error ("Junk at end of arguments."); | |
2717 | ||
30875e1c | 2718 | resolve_sal_pc (&sal); |
bd5635a1 | 2719 | |
30875e1c | 2720 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
bd5635a1 | 2721 | |
30875e1c SG |
2722 | old_chain = make_cleanup(delete_breakpoint, breakpoint); |
2723 | ||
bd5635a1 RP |
2724 | /* Keep within the current frame */ |
2725 | ||
2726 | if (prev_frame) | |
2727 | { | |
2728 | struct frame_info *fi; | |
2729 | ||
2730 | fi = get_frame_info (prev_frame); | |
2731 | sal = find_pc_line (fi->pc, 0); | |
2732 | sal.pc = fi->pc; | |
30875e1c SG |
2733 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); |
2734 | make_cleanup(delete_breakpoint, breakpoint); | |
bd5635a1 RP |
2735 | } |
2736 | ||
d7e7e851 | 2737 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
30875e1c | 2738 | do_cleanups(old_chain); |
bd5635a1 RP |
2739 | } |
2740 | \f | |
bdbd5f50 JG |
2741 | #if 0 |
2742 | /* These aren't used; I don't konw what they were for. */ | |
bd5635a1 RP |
2743 | /* Set a breakpoint at the catch clause for NAME. */ |
2744 | static int | |
2745 | catch_breakpoint (name) | |
2746 | char *name; | |
2747 | { | |
2748 | } | |
2749 | ||
2750 | static int | |
2751 | disable_catch_breakpoint () | |
2752 | { | |
2753 | } | |
2754 | ||
2755 | static int | |
2756 | delete_catch_breakpoint () | |
2757 | { | |
2758 | } | |
2759 | ||
2760 | static int | |
2761 | enable_catch_breakpoint () | |
2762 | { | |
2763 | } | |
bdbd5f50 | 2764 | #endif /* 0 */ |
bd5635a1 RP |
2765 | |
2766 | struct sal_chain | |
2767 | { | |
2768 | struct sal_chain *next; | |
2769 | struct symtab_and_line sal; | |
2770 | }; | |
2771 | ||
bdbd5f50 JG |
2772 | #if 0 |
2773 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 RP |
2774 | /* For each catch clause identified in ARGS, run FUNCTION |
2775 | with that clause as an argument. */ | |
2776 | static struct symtabs_and_lines | |
2777 | map_catch_names (args, function) | |
2778 | char *args; | |
2779 | int (*function)(); | |
2780 | { | |
2781 | register char *p = args; | |
2782 | register char *p1; | |
2783 | struct symtabs_and_lines sals; | |
bdbd5f50 | 2784 | #if 0 |
bd5635a1 | 2785 | struct sal_chain *sal_chain = 0; |
bdbd5f50 | 2786 | #endif |
bd5635a1 RP |
2787 | |
2788 | if (p == 0) | |
2789 | error_no_arg ("one or more catch names"); | |
2790 | ||
2791 | sals.nelts = 0; | |
2792 | sals.sals = NULL; | |
2793 | ||
2794 | while (*p) | |
2795 | { | |
2796 | p1 = p; | |
2797 | /* Don't swallow conditional part. */ | |
2798 | if (p1[0] == 'i' && p1[1] == 'f' | |
2799 | && (p1[2] == ' ' || p1[2] == '\t')) | |
2800 | break; | |
2801 | ||
2802 | if (isalpha (*p1)) | |
2803 | { | |
2804 | p1++; | |
2805 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
2806 | p1++; | |
2807 | } | |
2808 | ||
2809 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
2810 | error ("Arguments must be catch names."); | |
2811 | ||
2812 | *p1 = 0; | |
2813 | #if 0 | |
2814 | if (function (p)) | |
2815 | { | |
2816 | struct sal_chain *next | |
2817 | = (struct sal_chain *)alloca (sizeof (struct sal_chain)); | |
2818 | next->next = sal_chain; | |
2819 | next->sal = get_catch_sal (p); | |
2820 | sal_chain = next; | |
2821 | goto win; | |
2822 | } | |
2823 | #endif | |
199b2450 | 2824 | printf_unfiltered ("No catch clause for exception %s.\n", p); |
bdbd5f50 | 2825 | #if 0 |
bd5635a1 | 2826 | win: |
bdbd5f50 | 2827 | #endif |
bd5635a1 RP |
2828 | p = p1; |
2829 | while (*p == ' ' || *p == '\t') p++; | |
2830 | } | |
2831 | } | |
bdbd5f50 | 2832 | #endif /* 0 */ |
bd5635a1 RP |
2833 | |
2834 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
2835 | ||
2836 | static struct symtabs_and_lines | |
2837 | get_catch_sals (this_level_only) | |
2838 | int this_level_only; | |
2839 | { | |
bd5635a1 | 2840 | register struct blockvector *bl; |
777bef06 | 2841 | register struct block *block; |
bd5635a1 | 2842 | int index, have_default = 0; |
777bef06 JK |
2843 | struct frame_info *fi; |
2844 | CORE_ADDR pc; | |
bd5635a1 RP |
2845 | struct symtabs_and_lines sals; |
2846 | struct sal_chain *sal_chain = 0; | |
2847 | char *blocks_searched; | |
2848 | ||
777bef06 JK |
2849 | /* Not sure whether an error message is always the correct response, |
2850 | but it's better than a core dump. */ | |
2851 | if (selected_frame == NULL) | |
2852 | error ("No selected frame."); | |
2853 | block = get_frame_block (selected_frame); | |
2854 | fi = get_frame_info (selected_frame); | |
2855 | pc = fi->pc; | |
2856 | ||
bd5635a1 RP |
2857 | sals.nelts = 0; |
2858 | sals.sals = NULL; | |
2859 | ||
2860 | if (block == 0) | |
2861 | error ("No symbol table info available.\n"); | |
2862 | ||
2863 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
2864 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4ed3a9ea | 2865 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
2866 | |
2867 | while (block != 0) | |
2868 | { | |
2869 | CORE_ADDR end = BLOCK_END (block) - 4; | |
2870 | int last_index; | |
2871 | ||
2872 | if (bl != blockvector_for_pc (end, &index)) | |
2873 | error ("blockvector blotch"); | |
2874 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
2875 | error ("blockvector botch"); | |
2876 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
2877 | index += 1; | |
2878 | ||
2879 | /* Don't print out blocks that have gone by. */ | |
2880 | while (index < last_index | |
2881 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
2882 | index++; | |
2883 | ||
2884 | while (index < last_index | |
2885 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
2886 | { | |
2887 | if (blocks_searched[index] == 0) | |
2888 | { | |
2889 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
2890 | int nsyms; | |
2891 | register int i; | |
2892 | register struct symbol *sym; | |
2893 | ||
2894 | nsyms = BLOCK_NSYMS (b); | |
2895 | ||
2896 | for (i = 0; i < nsyms; i++) | |
2897 | { | |
2898 | sym = BLOCK_SYM (b, i); | |
2d313932 | 2899 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
2900 | { |
2901 | if (have_default) | |
2902 | continue; | |
2903 | have_default = 1; | |
2904 | } | |
2905 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
2906 | { | |
2907 | struct sal_chain *next = (struct sal_chain *) | |
2908 | alloca (sizeof (struct sal_chain)); | |
2909 | next->next = sal_chain; | |
2910 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
2911 | sal_chain = next; | |
2912 | } | |
2913 | } | |
2914 | blocks_searched[index] = 1; | |
2915 | } | |
2916 | index++; | |
2917 | } | |
2918 | if (have_default) | |
2919 | break; | |
2920 | if (sal_chain && this_level_only) | |
2921 | break; | |
2922 | ||
2923 | /* After handling the function's top-level block, stop. | |
2924 | Don't continue to its superblock, the block of | |
2925 | per-file symbols. */ | |
2926 | if (BLOCK_FUNCTION (block)) | |
2927 | break; | |
2928 | block = BLOCK_SUPERBLOCK (block); | |
2929 | } | |
2930 | ||
2931 | if (sal_chain) | |
2932 | { | |
2933 | struct sal_chain *tmp_chain; | |
2934 | ||
2935 | /* Count the number of entries. */ | |
2936 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
2937 | tmp_chain = tmp_chain->next) | |
2938 | index++; | |
2939 | ||
2940 | sals.nelts = index; | |
2941 | sals.sals = (struct symtab_and_line *) | |
2942 | xmalloc (index * sizeof (struct symtab_and_line)); | |
2943 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
2944 | sals.sals[index] = sal_chain->sal; | |
2945 | } | |
2946 | ||
2947 | return sals; | |
2948 | } | |
2949 | ||
2950 | /* Commands to deal with catching exceptions. */ | |
2951 | ||
30875e1c | 2952 | static void |
bd5635a1 RP |
2953 | catch_command_1 (arg, tempflag, from_tty) |
2954 | char *arg; | |
2955 | int tempflag; | |
2956 | int from_tty; | |
2957 | { | |
2958 | /* First, translate ARG into something we can deal with in terms | |
2959 | of breakpoints. */ | |
2960 | ||
2961 | struct symtabs_and_lines sals; | |
2962 | struct symtab_and_line sal; | |
2963 | register struct expression *cond = 0; | |
2964 | register struct breakpoint *b; | |
2965 | char *save_arg; | |
2966 | int i; | |
bd5635a1 RP |
2967 | |
2968 | sal.line = sal.pc = sal.end = 0; | |
2969 | sal.symtab = 0; | |
2970 | ||
2971 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
2972 | are breakpointed. */ | |
2973 | ||
2974 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2975 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2976 | { | |
2977 | /* Grab all active catch clauses. */ | |
2978 | sals = get_catch_sals (0); | |
2979 | } | |
2980 | else | |
2981 | { | |
2982 | /* Grab selected catch clauses. */ | |
fe675038 | 2983 | error ("catch NAME not implemented"); |
bdbd5f50 JG |
2984 | #if 0 |
2985 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 | 2986 | sals = map_catch_names (arg, catch_breakpoint); |
bdbd5f50 | 2987 | #endif |
bd5635a1 RP |
2988 | } |
2989 | ||
2990 | if (! sals.nelts) | |
2991 | return; | |
2992 | ||
2993 | save_arg = arg; | |
2994 | for (i = 0; i < sals.nelts; i++) | |
2995 | { | |
30875e1c | 2996 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
2997 | |
2998 | while (arg && *arg) | |
2999 | { | |
3000 | if (arg[0] == 'i' && arg[1] == 'f' | |
3001 | && (arg[2] == ' ' || arg[2] == '\t')) | |
30875e1c SG |
3002 | cond = parse_exp_1 ((arg += 2, &arg), |
3003 | block_for_pc (sals.sals[i].pc), 0); | |
bd5635a1 RP |
3004 | else |
3005 | error ("Junk at end of arguments."); | |
3006 | } | |
3007 | arg = save_arg; | |
bd5635a1 RP |
3008 | } |
3009 | ||
3010 | for (i = 0; i < sals.nelts; i++) | |
3011 | { | |
3012 | sal = sals.sals[i]; | |
3013 | ||
3014 | if (from_tty) | |
3015 | describe_other_breakpoints (sal.pc); | |
3016 | ||
3017 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
3018 | set_breakpoint_count (breakpoint_count + 1); |
3019 | b->number = breakpoint_count; | |
3020 | b->type = bp_breakpoint; | |
bd5635a1 | 3021 | b->cond = cond; |
30875e1c SG |
3022 | b->enable = enabled; |
3023 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 | 3024 | |
d889f6b7 | 3025 | mention (b); |
bd5635a1 RP |
3026 | } |
3027 | ||
3028 | if (sals.nelts > 1) | |
3029 | { | |
199b2450 TL |
3030 | printf_unfiltered ("Multiple breakpoints were set.\n"); |
3031 | printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 3032 | } |
c8950965 | 3033 | free ((PTR)sals.sals); |
bd5635a1 RP |
3034 | } |
3035 | ||
bdbd5f50 JG |
3036 | #if 0 |
3037 | /* These aren't used; I don't know what they were for. */ | |
bd5635a1 RP |
3038 | /* Disable breakpoints on all catch clauses described in ARGS. */ |
3039 | static void | |
3040 | disable_catch (args) | |
3041 | char *args; | |
3042 | { | |
3043 | /* Map the disable command to catch clauses described in ARGS. */ | |
3044 | } | |
3045 | ||
3046 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
3047 | static void | |
3048 | enable_catch (args) | |
3049 | char *args; | |
3050 | { | |
3051 | /* Map the disable command to catch clauses described in ARGS. */ | |
3052 | } | |
3053 | ||
3054 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
3055 | static void | |
3056 | delete_catch (args) | |
3057 | char *args; | |
3058 | { | |
3059 | /* Map the delete command to catch clauses described in ARGS. */ | |
3060 | } | |
bdbd5f50 | 3061 | #endif /* 0 */ |
bd5635a1 RP |
3062 | |
3063 | static void | |
3064 | catch_command (arg, from_tty) | |
3065 | char *arg; | |
3066 | int from_tty; | |
3067 | { | |
3068 | catch_command_1 (arg, 0, from_tty); | |
3069 | } | |
3070 | \f | |
3071 | static void | |
3072 | clear_command (arg, from_tty) | |
3073 | char *arg; | |
3074 | int from_tty; | |
3075 | { | |
3076 | register struct breakpoint *b, *b1; | |
3077 | struct symtabs_and_lines sals; | |
3078 | struct symtab_and_line sal; | |
3079 | register struct breakpoint *found; | |
3080 | int i; | |
3081 | ||
3082 | if (arg) | |
3083 | { | |
3084 | sals = decode_line_spec (arg, 1); | |
3085 | } | |
3086 | else | |
3087 | { | |
3088 | sals.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); | |
3089 | sal.line = default_breakpoint_line; | |
3090 | sal.symtab = default_breakpoint_symtab; | |
3091 | sal.pc = 0; | |
3092 | if (sal.symtab == 0) | |
3093 | error ("No source file specified."); | |
3094 | ||
3095 | sals.sals[0] = sal; | |
3096 | sals.nelts = 1; | |
3097 | } | |
3098 | ||
3099 | for (i = 0; i < sals.nelts; i++) | |
3100 | { | |
3101 | /* If exact pc given, clear bpts at that pc. | |
3102 | But if sal.pc is zero, clear all bpts on specified line. */ | |
3103 | sal = sals.sals[i]; | |
3104 | found = (struct breakpoint *) 0; | |
3105 | while (breakpoint_chain | |
d889f6b7 JK |
3106 | && (sal.pc |
3107 | ? breakpoint_chain->address == sal.pc | |
3108 | : (breakpoint_chain->source_file != NULL | |
3109 | && sal.symtab != NULL | |
3110 | && STREQ (breakpoint_chain->source_file, | |
3111 | sal.symtab->filename) | |
bd5635a1 RP |
3112 | && breakpoint_chain->line_number == sal.line))) |
3113 | { | |
3114 | b1 = breakpoint_chain; | |
3115 | breakpoint_chain = b1->next; | |
3116 | b1->next = found; | |
3117 | found = b1; | |
3118 | } | |
3119 | ||
3120 | ALL_BREAKPOINTS (b) | |
3121 | while (b->next | |
30875e1c | 3122 | && b->next->type != bp_watchpoint |
999dd04b | 3123 | && b->next->type != bp_hardware_watchpoint |
11054881 KH |
3124 | && b->next->type != bp_read_watchpoint |
3125 | && b->next->type != bp_access_watchpoint | |
d889f6b7 JK |
3126 | && (sal.pc |
3127 | ? b->next->address == sal.pc | |
3128 | : (b->next->source_file != NULL | |
3129 | && sal.symtab != NULL | |
3130 | && STREQ (b->next->source_file, sal.symtab->filename) | |
bd5635a1 RP |
3131 | && b->next->line_number == sal.line))) |
3132 | { | |
3133 | b1 = b->next; | |
3134 | b->next = b1->next; | |
3135 | b1->next = found; | |
3136 | found = b1; | |
3137 | } | |
3138 | ||
3139 | if (found == 0) | |
3140 | { | |
3141 | if (arg) | |
3142 | error ("No breakpoint at %s.", arg); | |
3143 | else | |
3144 | error ("No breakpoint at this line."); | |
3145 | } | |
3146 | ||
3147 | if (found->next) from_tty = 1; /* Always report if deleted more than one */ | |
199b2450 | 3148 | if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); |
6c803036 | 3149 | breakpoints_changed (); |
bd5635a1 RP |
3150 | while (found) |
3151 | { | |
199b2450 | 3152 | if (from_tty) printf_unfiltered ("%d ", found->number); |
bd5635a1 RP |
3153 | b1 = found->next; |
3154 | delete_breakpoint (found); | |
3155 | found = b1; | |
3156 | } | |
199b2450 | 3157 | if (from_tty) putchar_unfiltered ('\n'); |
bd5635a1 | 3158 | } |
c8950965 | 3159 | free ((PTR)sals.sals); |
bd5635a1 RP |
3160 | } |
3161 | \f | |
3162 | /* Delete breakpoint in BS if they are `delete' breakpoints. | |
3163 | This is called after any breakpoint is hit, or after errors. */ | |
3164 | ||
3165 | void | |
3166 | breakpoint_auto_delete (bs) | |
3167 | bpstat bs; | |
3168 | { | |
3169 | for (; bs; bs = bs->next) | |
cef4c2e7 PS |
3170 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == delete |
3171 | && bs->stop) | |
bd5635a1 RP |
3172 | delete_breakpoint (bs->breakpoint_at); |
3173 | } | |
3174 | ||
3175 | /* Delete a breakpoint and clean up all traces of it in the data structures. */ | |
3176 | ||
30875e1c | 3177 | void |
bd5635a1 RP |
3178 | delete_breakpoint (bpt) |
3179 | struct breakpoint *bpt; | |
3180 | { | |
3181 | register struct breakpoint *b; | |
3182 | register bpstat bs; | |
3183 | ||
3184 | if (bpt->inserted) | |
999dd04b JL |
3185 | remove_breakpoint (bpt); |
3186 | ||
bd5635a1 RP |
3187 | if (breakpoint_chain == bpt) |
3188 | breakpoint_chain = bpt->next; | |
3189 | ||
3190 | ALL_BREAKPOINTS (b) | |
3191 | if (b->next == bpt) | |
3192 | { | |
3193 | b->next = bpt->next; | |
3194 | break; | |
3195 | } | |
3196 | ||
3197 | check_duplicates (bpt->address); | |
fe675038 JK |
3198 | /* If this breakpoint was inserted, and there is another breakpoint |
3199 | at the same address, we need to insert the other breakpoint. */ | |
999dd04b | 3200 | if (bpt->inserted |
11054881 KH |
3201 | && bpt->type != bp_hardware_watchpoint |
3202 | && bpt->type != bp_read_watchpoint | |
3203 | && bpt->type != bp_access_watchpoint) | |
fe675038 JK |
3204 | { |
3205 | ALL_BREAKPOINTS (b) | |
ebad9e90 JK |
3206 | if (b->address == bpt->address |
3207 | && !b->duplicate | |
3208 | && b->enable != disabled) | |
fe675038 JK |
3209 | { |
3210 | int val; | |
3211 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
3212 | if (val != 0) | |
3213 | { | |
05052b63 | 3214 | target_terminal_ours_for_output (); |
199b2450 | 3215 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
fe675038 JK |
3216 | memory_error (val, b->address); /* which bombs us out */ |
3217 | } | |
3218 | else | |
3219 | b->inserted = 1; | |
3220 | } | |
3221 | } | |
bd5635a1 RP |
3222 | |
3223 | free_command_lines (&bpt->commands); | |
3224 | if (bpt->cond) | |
d889f6b7 | 3225 | free (bpt->cond); |
bd5635a1 | 3226 | if (bpt->cond_string != NULL) |
d889f6b7 | 3227 | free (bpt->cond_string); |
bd5635a1 | 3228 | if (bpt->addr_string != NULL) |
d889f6b7 | 3229 | free (bpt->addr_string); |
0eaaa46a | 3230 | if (bpt->exp_string != NULL) |
d889f6b7 JK |
3231 | free (bpt->exp_string); |
3232 | if (bpt->source_file != NULL) | |
3233 | free (bpt->source_file); | |
bd5635a1 | 3234 | |
6c803036 | 3235 | breakpoints_changed (); |
bd5635a1 RP |
3236 | |
3237 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
05052b63 JK |
3238 | /* FIXME, how can we find all bpstat's? |
3239 | We just check stop_bpstat for now. */ | |
bd5635a1 RP |
3240 | for (bs = stop_bpstat; bs; bs = bs->next) |
3241 | if (bs->breakpoint_at == bpt) | |
3242 | bs->breakpoint_at = NULL; | |
c8950965 | 3243 | free ((PTR)bpt); |
bd5635a1 RP |
3244 | } |
3245 | ||
bd5635a1 RP |
3246 | static void |
3247 | delete_command (arg, from_tty) | |
3248 | char *arg; | |
3249 | int from_tty; | |
3250 | { | |
3251 | ||
3252 | if (arg == 0) | |
3253 | { | |
3254 | /* Ask user only if there are some breakpoints to delete. */ | |
3255 | if (!from_tty | |
3256 | || (breakpoint_chain && query ("Delete all breakpoints? ", 0, 0))) | |
3257 | { | |
3258 | /* No arg; clear all breakpoints. */ | |
3259 | while (breakpoint_chain) | |
3260 | delete_breakpoint (breakpoint_chain); | |
3261 | } | |
3262 | } | |
3263 | else | |
3264 | map_breakpoint_numbers (arg, delete_breakpoint); | |
3265 | } | |
3266 | ||
bdbd5f50 JG |
3267 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
3268 | The value we return ends up being the return value from catch_errors. | |
3269 | Unused in this case. */ | |
3270 | ||
3271 | static int | |
bd5635a1 | 3272 | breakpoint_re_set_one (bint) |
bdbd5f50 | 3273 | char *bint; |
bd5635a1 RP |
3274 | { |
3275 | struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */ | |
11054881 | 3276 | struct value *mark; |
bd5635a1 RP |
3277 | int i; |
3278 | struct symtabs_and_lines sals; | |
bd5635a1 | 3279 | char *s; |
30875e1c | 3280 | enum enable save_enable; |
bd5635a1 | 3281 | |
80ba48f5 | 3282 | switch (b->type) |
bd5635a1 | 3283 | { |
80ba48f5 | 3284 | case bp_breakpoint: |
11054881 | 3285 | case bp_hardware_breakpoint: |
80ba48f5 SG |
3286 | if (b->addr_string == NULL) |
3287 | { | |
3288 | /* Anything without a string can't be re-set. */ | |
3289 | delete_breakpoint (b); | |
3290 | return 0; | |
3291 | } | |
30875e1c SG |
3292 | /* In case we have a problem, disable this breakpoint. We'll restore |
3293 | its status if we succeed. */ | |
3294 | save_enable = b->enable; | |
3295 | b->enable = disabled; | |
3296 | ||
bd5635a1 | 3297 | s = b->addr_string; |
d889f6b7 | 3298 | sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
3299 | for (i = 0; i < sals.nelts; i++) |
3300 | { | |
30875e1c | 3301 | resolve_sal_pc (&sals.sals[i]); |
fee933f1 RP |
3302 | |
3303 | /* Reparse conditions, they might contain references to the | |
3304 | old symtab. */ | |
3305 | if (b->cond_string != NULL) | |
3306 | { | |
3307 | s = b->cond_string; | |
3308 | if (b->cond) | |
3309 | free ((PTR)b->cond); | |
3310 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); | |
3311 | } | |
3312 | ||
3313 | /* We need to re-set the breakpoint if the address changes...*/ | |
d889f6b7 | 3314 | if (b->address != sals.sals[i].pc |
fee933f1 RP |
3315 | /* ...or new and old breakpoints both have source files, and |
3316 | the source file name or the line number changes... */ | |
d889f6b7 JK |
3317 | || (b->source_file != NULL |
3318 | && sals.sals[i].symtab != NULL | |
3319 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
3320 | || b->line_number != sals.sals[i].line) | |
fee933f1 RP |
3321 | ) |
3322 | /* ...or we switch between having a source file and not having | |
3323 | one. */ | |
3324 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
3325 | ) | |
bd5635a1 | 3326 | { |
d889f6b7 JK |
3327 | if (b->source_file != NULL) |
3328 | free (b->source_file); | |
3329 | if (sals.sals[i].symtab == NULL) | |
3330 | b->source_file = NULL; | |
3331 | else | |
3332 | b->source_file = | |
3333 | savestring (sals.sals[i].symtab->filename, | |
3334 | strlen (sals.sals[i].symtab->filename)); | |
8537ba60 SG |
3335 | b->line_number = sals.sals[i].line; |
3336 | b->address = sals.sals[i].pc; | |
bd5635a1 | 3337 | |
8537ba60 | 3338 | check_duplicates (b->address); |
bd5635a1 | 3339 | |
8537ba60 | 3340 | mention (b); |
6c803036 JK |
3341 | |
3342 | /* Might be better to do this just once per breakpoint_re_set, | |
3343 | rather than once for every breakpoint. */ | |
3344 | breakpoints_changed (); | |
8537ba60 | 3345 | } |
30875e1c | 3346 | b->enable = save_enable; /* Restore it, this worked. */ |
bd5635a1 | 3347 | } |
c8950965 | 3348 | free ((PTR)sals.sals); |
80ba48f5 | 3349 | break; |
2d313932 | 3350 | |
80ba48f5 | 3351 | case bp_watchpoint: |
999dd04b | 3352 | case bp_hardware_watchpoint: |
11054881 KH |
3353 | case bp_read_watchpoint: |
3354 | case bp_access_watchpoint: | |
0eaaa46a | 3355 | innermost_block = NULL; |
0a97f6c4 JK |
3356 | /* The issue arises of what context to evaluate this in. The same |
3357 | one as when it was set, but what does that mean when symbols have | |
3358 | been re-read? We could save the filename and functionname, but | |
3359 | if the context is more local than that, the best we could do would | |
3360 | be something like how many levels deep and which index at that | |
3361 | particular level, but that's going to be less stable than filenames | |
3362 | or functionnames. */ | |
3363 | /* So for now, just use a global context. */ | |
0eaaa46a JK |
3364 | b->exp = parse_expression (b->exp_string); |
3365 | b->exp_valid_block = innermost_block; | |
11054881 | 3366 | mark = value_mark (); |
0eaaa46a JK |
3367 | b->val = evaluate_expression (b->exp); |
3368 | release_value (b->val); | |
3369 | if (VALUE_LAZY (b->val)) | |
3370 | value_fetch_lazy (b->val); | |
3371 | ||
2d313932 JK |
3372 | if (b->cond_string != NULL) |
3373 | { | |
3374 | s = b->cond_string; | |
3375 | b->cond = parse_exp_1 (&s, (struct block *)0, 0); | |
3376 | } | |
cabd4da6 JK |
3377 | if (b->enable == enabled) |
3378 | mention (b); | |
11054881 | 3379 | value_free_to_mark (mark); |
80ba48f5 | 3380 | break; |
2d313932 | 3381 | |
80ba48f5 SG |
3382 | default: |
3383 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
2d313932 | 3384 | /* fall through */ |
80ba48f5 SG |
3385 | case bp_until: |
3386 | case bp_finish: | |
3387 | case bp_longjmp: | |
3388 | case bp_longjmp_resume: | |
999dd04b | 3389 | case bp_watchpoint_scope: |
cf3e377e | 3390 | case bp_call_dummy: |
80ba48f5 SG |
3391 | delete_breakpoint (b); |
3392 | break; | |
bd5635a1 | 3393 | } |
80ba48f5 | 3394 | |
bdbd5f50 | 3395 | return 0; |
bd5635a1 RP |
3396 | } |
3397 | ||
3398 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
3399 | void | |
3400 | breakpoint_re_set () | |
3401 | { | |
cba0d141 | 3402 | struct breakpoint *b, *temp; |
30875e1c SG |
3403 | static char message1[] = "Error in re-setting breakpoint %d:\n"; |
3404 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 | 3405 | |
cba0d141 | 3406 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 3407 | { |
2d313932 | 3408 | sprintf (message, message1, b->number); /* Format possible error msg */ |
fe675038 JK |
3409 | catch_errors (breakpoint_re_set_one, (char *) b, message, |
3410 | RETURN_MASK_ALL); | |
bd5635a1 RP |
3411 | } |
3412 | ||
80ba48f5 SG |
3413 | create_longjmp_breakpoint("longjmp"); |
3414 | create_longjmp_breakpoint("_longjmp"); | |
3415 | create_longjmp_breakpoint("siglongjmp"); | |
3416 | create_longjmp_breakpoint(NULL); | |
3417 | ||
1eeba686 PB |
3418 | #if 0 |
3419 | /* Took this out (temporaliy at least), since it produces an extra | |
3420 | blank line at startup. This messes up the gdbtests. -PB */ | |
bd5635a1 RP |
3421 | /* Blank line to finish off all those mention() messages we just printed. */ |
3422 | printf_filtered ("\n"); | |
1eeba686 | 3423 | #endif |
bd5635a1 RP |
3424 | } |
3425 | \f | |
3426 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
3427 | If from_tty is nonzero, it prints a message to that effect, | |
3428 | which ends with a period (no newline). */ | |
3429 | ||
3430 | void | |
3431 | set_ignore_count (bptnum, count, from_tty) | |
3432 | int bptnum, count, from_tty; | |
3433 | { | |
3434 | register struct breakpoint *b; | |
3435 | ||
3436 | if (count < 0) | |
3437 | count = 0; | |
3438 | ||
3439 | ALL_BREAKPOINTS (b) | |
3440 | if (b->number == bptnum) | |
3441 | { | |
3442 | b->ignore_count = count; | |
3443 | if (!from_tty) | |
3444 | return; | |
3445 | else if (count == 0) | |
423e9664 SG |
3446 | printf_filtered ("Will stop next time breakpoint %d is reached.", |
3447 | bptnum); | |
bd5635a1 | 3448 | else if (count == 1) |
423e9664 SG |
3449 | printf_filtered ("Will ignore next crossing of breakpoint %d.", |
3450 | bptnum); | |
bd5635a1 | 3451 | else |
423e9664 | 3452 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", |
bd5635a1 | 3453 | count, bptnum); |
6c803036 | 3454 | breakpoints_changed (); |
bd5635a1 RP |
3455 | return; |
3456 | } | |
3457 | ||
3458 | error ("No breakpoint number %d.", bptnum); | |
3459 | } | |
3460 | ||
3461 | /* Clear the ignore counts of all breakpoints. */ | |
3462 | void | |
3463 | breakpoint_clear_ignore_counts () | |
3464 | { | |
3465 | struct breakpoint *b; | |
3466 | ||
3467 | ALL_BREAKPOINTS (b) | |
3468 | b->ignore_count = 0; | |
3469 | } | |
3470 | ||
3471 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
3472 | ||
3473 | static void | |
3474 | ignore_command (args, from_tty) | |
3475 | char *args; | |
3476 | int from_tty; | |
3477 | { | |
3478 | char *p = args; | |
3479 | register int num; | |
3480 | ||
3481 | if (p == 0) | |
3482 | error_no_arg ("a breakpoint number"); | |
3483 | ||
3484 | num = get_number (&p); | |
3485 | ||
3486 | if (*p == 0) | |
3487 | error ("Second argument (specified ignore-count) is missing."); | |
3488 | ||
bdbd5f50 JG |
3489 | set_ignore_count (num, |
3490 | longest_to_int (value_as_long (parse_and_eval (p))), | |
3491 | from_tty); | |
423e9664 | 3492 | printf_filtered ("\n"); |
6c803036 | 3493 | breakpoints_changed (); |
bd5635a1 RP |
3494 | } |
3495 | \f | |
3496 | /* Call FUNCTION on each of the breakpoints | |
3497 | whose numbers are given in ARGS. */ | |
3498 | ||
3499 | static void | |
3500 | map_breakpoint_numbers (args, function) | |
3501 | char *args; | |
30875e1c | 3502 | void (*function) PARAMS ((struct breakpoint *)); |
bd5635a1 RP |
3503 | { |
3504 | register char *p = args; | |
3505 | char *p1; | |
3506 | register int num; | |
3507 | register struct breakpoint *b; | |
3508 | ||
3509 | if (p == 0) | |
3510 | error_no_arg ("one or more breakpoint numbers"); | |
3511 | ||
3512 | while (*p) | |
3513 | { | |
3514 | p1 = p; | |
3515 | ||
3516 | num = get_number (&p1); | |
3517 | ||
3518 | ALL_BREAKPOINTS (b) | |
3519 | if (b->number == num) | |
3520 | { | |
999dd04b | 3521 | struct breakpoint *related_breakpoint = b->related_breakpoint; |
bd5635a1 | 3522 | function (b); |
999dd04b JL |
3523 | if (related_breakpoint) |
3524 | function (related_breakpoint); | |
bd5635a1 RP |
3525 | goto win; |
3526 | } | |
199b2450 | 3527 | printf_unfiltered ("No breakpoint number %d.\n", num); |
bd5635a1 RP |
3528 | win: |
3529 | p = p1; | |
3530 | } | |
3531 | } | |
3532 | ||
3533 | static void | |
3534 | enable_breakpoint (bpt) | |
3535 | struct breakpoint *bpt; | |
3536 | { | |
fee933f1 | 3537 | FRAME save_selected_frame = NULL; |
fa99ebe1 | 3538 | int save_selected_frame_level = -1; |
11054881 KH |
3539 | int target_resources_ok, other_type_used; |
3540 | struct value *mark; | |
fa99ebe1 | 3541 | |
11054881 KH |
3542 | if (bpt->type == bp_hardware_breakpoint) |
3543 | { | |
3544 | int i; | |
3545 | i = hw_breakpoint_used_count(); | |
3546 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3547 | bp_hardware_breakpoint, i+1, 0); | |
3548 | if (target_resources_ok == 0) | |
3549 | error ("No hardware breakpoint support in the target."); | |
3550 | else if (target_resources_ok < 0) | |
3551 | error ("Hardware breakpoints used exceeds limit."); | |
3552 | } | |
bd5635a1 | 3553 | bpt->enable = enabled; |
6c803036 | 3554 | breakpoints_changed (); |
bd5635a1 | 3555 | check_duplicates (bpt->address); |
11054881 KH |
3556 | |
3557 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3558 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
bd5635a1 | 3559 | { |
fa99ebe1 | 3560 | if (bpt->exp_valid_block != NULL) |
f266e564 | 3561 | { |
999dd04b | 3562 | FRAME fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); |
fa99ebe1 JK |
3563 | if (fr == NULL) |
3564 | { | |
3565 | printf_filtered ("\ | |
f266e564 JK |
3566 | Cannot enable watchpoint %d because the block in which its expression\n\ |
3567 | is valid is not currently in scope.\n", bpt->number); | |
fa99ebe1 JK |
3568 | bpt->enable = disabled; |
3569 | return; | |
3570 | } | |
999dd04b | 3571 | |
fa99ebe1 JK |
3572 | save_selected_frame = selected_frame; |
3573 | save_selected_frame_level = selected_frame_level; | |
3574 | select_frame (fr, -1); | |
f266e564 JK |
3575 | } |
3576 | ||
bd5635a1 | 3577 | value_free (bpt->val); |
11054881 | 3578 | mark = value_mark (); |
bd5635a1 RP |
3579 | bpt->val = evaluate_expression (bpt->exp); |
3580 | release_value (bpt->val); | |
2d313932 JK |
3581 | if (VALUE_LAZY (bpt->val)) |
3582 | value_fetch_lazy (bpt->val); | |
fa99ebe1 | 3583 | |
11054881 KH |
3584 | if (bpt->type == bp_hardware_watchpoint || |
3585 | bpt->type == bp_read_watchpoint || | |
3586 | bpt->type == bp_access_watchpoint) | |
3587 | { | |
3588 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
557f3a0e SS |
3589 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); |
3590 | ||
11054881 | 3591 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( |
557f3a0e | 3592 | bpt->type, i + mem_cnt, other_type_used); |
11054881 KH |
3593 | /* we can consider of type is bp_hardware_watchpoint, convert to |
3594 | bp_watchpoint in the following condition */ | |
3595 | if (target_resources_ok < 0) | |
3596 | { | |
3597 | printf_filtered("\ | |
3598 | Cannot enable watchpoint %d because target watch resources\n\ | |
3599 | have been allocated for other watchpoints.\n", bpt->number); | |
3600 | bpt->enable = disabled; | |
3601 | value_free_to_mark (mark); | |
3602 | return; | |
3603 | } | |
3604 | } | |
3605 | ||
fa99ebe1 JK |
3606 | if (save_selected_frame_level >= 0) |
3607 | select_frame (save_selected_frame, save_selected_frame_level); | |
11054881 | 3608 | value_free_to_mark (mark); |
bd5635a1 RP |
3609 | } |
3610 | } | |
3611 | ||
bdbd5f50 | 3612 | /* ARGSUSED */ |
bd5635a1 RP |
3613 | static void |
3614 | enable_command (args, from_tty) | |
3615 | char *args; | |
3616 | int from_tty; | |
3617 | { | |
3618 | struct breakpoint *bpt; | |
3619 | if (args == 0) | |
3620 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3621 | switch (bpt->type) |
3622 | { | |
3623 | case bp_breakpoint: | |
11054881 | 3624 | case bp_hardware_breakpoint: |
423e9664 | 3625 | case bp_watchpoint: |
999dd04b | 3626 | case bp_hardware_watchpoint: |
11054881 KH |
3627 | case bp_read_watchpoint: |
3628 | case bp_access_watchpoint: | |
423e9664 SG |
3629 | enable_breakpoint (bpt); |
3630 | default: | |
3631 | continue; | |
3632 | } | |
bd5635a1 RP |
3633 | else |
3634 | map_breakpoint_numbers (args, enable_breakpoint); | |
3635 | } | |
3636 | ||
3637 | static void | |
3638 | disable_breakpoint (bpt) | |
3639 | struct breakpoint *bpt; | |
3640 | { | |
999dd04b JL |
3641 | /* Never disable a watchpoint scope breakpoint; we want to |
3642 | hit them when we leave scope so we can delete both the | |
3643 | watchpoint and its scope breakpoint at that time. */ | |
3644 | if (bpt->type == bp_watchpoint_scope) | |
3645 | return; | |
3646 | ||
bd5635a1 RP |
3647 | bpt->enable = disabled; |
3648 | ||
6c803036 | 3649 | breakpoints_changed (); |
bd5635a1 RP |
3650 | |
3651 | check_duplicates (bpt->address); | |
3652 | } | |
3653 | ||
bdbd5f50 | 3654 | /* ARGSUSED */ |
bd5635a1 RP |
3655 | static void |
3656 | disable_command (args, from_tty) | |
3657 | char *args; | |
3658 | int from_tty; | |
3659 | { | |
3660 | register struct breakpoint *bpt; | |
3661 | if (args == 0) | |
3662 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3663 | switch (bpt->type) |
3664 | { | |
3665 | case bp_breakpoint: | |
11054881 KH |
3666 | case bp_hardware_breakpoint: |
3667 | case bp_watchpoint: | |
3668 | case bp_hardware_watchpoint: | |
3669 | case bp_read_watchpoint: | |
3670 | case bp_access_watchpoint: | |
423e9664 SG |
3671 | disable_breakpoint (bpt); |
3672 | default: | |
3673 | continue; | |
3674 | } | |
bd5635a1 RP |
3675 | else |
3676 | map_breakpoint_numbers (args, disable_breakpoint); | |
3677 | } | |
3678 | ||
3679 | static void | |
3680 | enable_once_breakpoint (bpt) | |
3681 | struct breakpoint *bpt; | |
3682 | { | |
11054881 KH |
3683 | FRAME save_selected_frame = NULL; |
3684 | int save_selected_frame_level = -1; | |
3685 | int target_resources_ok, other_type_used; | |
3686 | struct value *mark; | |
3687 | ||
3688 | if (bpt->type == bp_hardware_breakpoint) | |
3689 | { | |
3690 | int i; | |
3691 | i = hw_breakpoint_used_count(); | |
3692 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3693 | bp_hardware_breakpoint, i+1, 0); | |
3694 | if (target_resources_ok == 0) | |
3695 | error ("No hardware breakpoint support in the target."); | |
3696 | else if (target_resources_ok < 0) | |
3697 | error ("Hardware breakpoints used exceeds limit."); | |
3698 | } | |
3699 | ||
30875e1c SG |
3700 | bpt->enable = enabled; |
3701 | bpt->disposition = disable; | |
bd5635a1 | 3702 | check_duplicates (bpt->address); |
6c803036 | 3703 | breakpoints_changed (); |
11054881 KH |
3704 | |
3705 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3706 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
3707 | { | |
3708 | if (bpt->exp_valid_block != NULL) | |
3709 | { | |
3710 | FRAME fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
3711 | if (fr == NULL) | |
3712 | { | |
3713 | printf_filtered ("\ | |
3714 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
3715 | is valid is not currently in scope.\n", bpt->number); | |
3716 | bpt->enable = disabled; | |
3717 | return; | |
3718 | } | |
3719 | ||
3720 | save_selected_frame = selected_frame; | |
3721 | save_selected_frame_level = selected_frame_level; | |
3722 | select_frame (fr, -1); | |
3723 | } | |
3724 | ||
3725 | value_free (bpt->val); | |
3726 | mark = value_mark (); | |
3727 | bpt->val = evaluate_expression (bpt->exp); | |
3728 | release_value (bpt->val); | |
3729 | if (VALUE_LAZY (bpt->val)) | |
3730 | value_fetch_lazy (bpt->val); | |
3731 | ||
3732 | if (bpt->type == bp_hardware_watchpoint || | |
3733 | bpt->type == bp_read_watchpoint || | |
3734 | bpt->type == bp_access_watchpoint) | |
3735 | { | |
3736 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3737 | int mem_cnt = can_use_hardware_watchpoint(bpt->val); | |
3738 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3739 | bpt->type, i+mem_cnt, other_type_used); | |
3740 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
3741 | bp_watchpoint in the following condition */ | |
3742 | if (target_resources_ok < 0) | |
3743 | { | |
3744 | printf_filtered("\ | |
3745 | Cannot enable watchpoint %d because target watch resources\n\ | |
3746 | have been allocated for other watchpoints.\n", bpt->number); | |
3747 | bpt->enable = disabled; | |
3748 | value_free_to_mark (mark); | |
3749 | } | |
3750 | } | |
3751 | ||
3752 | if (save_selected_frame_level >= 0) | |
3753 | select_frame (save_selected_frame, save_selected_frame_level); | |
3754 | value_free_to_mark (mark); | |
3755 | } | |
bd5635a1 RP |
3756 | } |
3757 | ||
bdbd5f50 | 3758 | /* ARGSUSED */ |
bd5635a1 RP |
3759 | static void |
3760 | enable_once_command (args, from_tty) | |
3761 | char *args; | |
3762 | int from_tty; | |
3763 | { | |
3764 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
3765 | } | |
3766 | ||
3767 | static void | |
3768 | enable_delete_breakpoint (bpt) | |
3769 | struct breakpoint *bpt; | |
3770 | { | |
30875e1c SG |
3771 | bpt->enable = enabled; |
3772 | bpt->disposition = delete; | |
bd5635a1 RP |
3773 | |
3774 | check_duplicates (bpt->address); | |
6c803036 | 3775 | breakpoints_changed (); |
bd5635a1 RP |
3776 | } |
3777 | ||
bdbd5f50 | 3778 | /* ARGSUSED */ |
bd5635a1 RP |
3779 | static void |
3780 | enable_delete_command (args, from_tty) | |
3781 | char *args; | |
3782 | int from_tty; | |
3783 | { | |
3784 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
3785 | } | |
3786 | \f | |
3787 | /* | |
3788 | * Use default_breakpoint_'s, or nothing if they aren't valid. | |
3789 | */ | |
3790 | struct symtabs_and_lines | |
3791 | decode_line_spec_1 (string, funfirstline) | |
3792 | char *string; | |
3793 | int funfirstline; | |
3794 | { | |
3795 | struct symtabs_and_lines sals; | |
3796 | if (string == 0) | |
3797 | error ("Empty line specification."); | |
3798 | if (default_breakpoint_valid) | |
3799 | sals = decode_line_1 (&string, funfirstline, | |
d889f6b7 JK |
3800 | default_breakpoint_symtab, default_breakpoint_line, |
3801 | (char ***)NULL); | |
bd5635a1 | 3802 | else |
d889f6b7 JK |
3803 | sals = decode_line_1 (&string, funfirstline, |
3804 | (struct symtab *)NULL, 0, (char ***)NULL); | |
bd5635a1 RP |
3805 | if (*string) |
3806 | error ("Junk at end of line specification: %s", string); | |
3807 | return sals; | |
3808 | } | |
3809 | \f | |
bd5635a1 RP |
3810 | void |
3811 | _initialize_breakpoint () | |
3812 | { | |
3813 | breakpoint_chain = 0; | |
3814 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
3815 | before a breakpoint is set. */ | |
3816 | breakpoint_count = 0; | |
3817 | ||
3818 | add_com ("ignore", class_breakpoint, ignore_command, | |
557f3a0e SS |
3819 | "Set ignore-count of breakpoint number N to COUNT.\n\ |
3820 | Usage is `ignore N COUNT'."); | |
bd5635a1 RP |
3821 | |
3822 | add_com ("commands", class_breakpoint, commands_command, | |
3823 | "Set commands to be executed when a breakpoint is hit.\n\ | |
3824 | Give breakpoint number as argument after \"commands\".\n\ | |
3825 | With no argument, the targeted breakpoint is the last one set.\n\ | |
3826 | The commands themselves follow starting on the next line.\n\ | |
3827 | Type a line containing \"end\" to indicate the end of them.\n\ | |
3828 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
3829 | then no output is printed when it is hit, except what the commands print."); | |
3830 | ||
3831 | add_com ("condition", class_breakpoint, condition_command, | |
3832 | "Specify breakpoint number N to break only if COND is true.\n\ | |
557f3a0e SS |
3833 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
3834 | expression to be evaluated whenever breakpoint N is reached. "); | |
bd5635a1 RP |
3835 | |
3836 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
3837 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c4de6b30 JK |
3838 | Like \"break\" except the breakpoint is only temporary,\n\ |
3839 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
3840 | by using \"enable delete\" on the breakpoint number."); | |
bd5635a1 | 3841 | |
11054881 KH |
3842 | add_com ("hbreak", class_breakpoint, hbreak_command, |
3843 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3844 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
3845 | some target hardware may not have this support."); | |
3846 | ||
3847 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
3848 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3849 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
3850 | so it will be deleted when hit."); | |
3851 | ||
bd5635a1 RP |
3852 | add_prefix_cmd ("enable", class_breakpoint, enable_command, |
3853 | "Enable some breakpoints.\n\ | |
3854 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3855 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
3856 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3857 | With a subcommand you can enable temporarily.", | |
3858 | &enablelist, "enable ", 1, &cmdlist); | |
3859 | ||
3860 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
3861 | "Enable some breakpoints.\n\ | |
3862 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3863 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3864 | May be abbreviated to simply \"enable\".\n", | |
3865 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); | |
3866 | ||
3867 | add_cmd ("once", no_class, enable_once_command, | |
3868 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3869 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3870 | &enablebreaklist); |
3871 | ||
3872 | add_cmd ("delete", no_class, enable_delete_command, | |
3873 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3874 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3875 | &enablebreaklist); | |
3876 | ||
3877 | add_cmd ("delete", no_class, enable_delete_command, | |
3878 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3879 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3880 | &enablelist); | |
3881 | ||
3882 | add_cmd ("once", no_class, enable_once_command, | |
3883 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3884 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3885 | &enablelist); |
3886 | ||
3887 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
3888 | "Disable some breakpoints.\n\ | |
3889 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3890 | To disable all breakpoints, give no argument.\n\ | |
3891 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
3892 | &disablelist, "disable ", 1, &cmdlist); | |
3893 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
3894 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
3895 | ||
3896 | add_cmd ("breakpoints", class_alias, disable_command, | |
3897 | "Disable some breakpoints.\n\ | |
3898 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3899 | To disable all breakpoints, give no argument.\n\ | |
3900 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
3901 | This command may be abbreviated \"disable\".", | |
3902 | &disablelist); | |
3903 | ||
3904 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
3905 | "Delete some breakpoints or auto-display expressions.\n\ | |
3906 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3907 | To delete all breakpoints, give no argument.\n\ | |
3908 | \n\ | |
3909 | Also a prefix command for deletion of other GDB objects.\n\ | |
3910 | The \"unset\" command is also an alias for \"delete\".", | |
3911 | &deletelist, "delete ", 1, &cmdlist); | |
3912 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
bd5635a1 RP |
3913 | |
3914 | add_cmd ("breakpoints", class_alias, delete_command, | |
3915 | "Delete some breakpoints or auto-display expressions.\n\ | |
3916 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3917 | To delete all breakpoints, give no argument.\n\ | |
3918 | This command may be abbreviated \"delete\".", | |
3919 | &deletelist); | |
3920 | ||
3921 | add_com ("clear", class_breakpoint, clear_command, | |
3922 | "Clear breakpoint at specified line or function.\n\ | |
3923 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
3924 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
3925 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
3926 | If an address is specified, breakpoints at that address are cleared.\n\n\ | |
3927 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
3928 | is executing in.\n\ | |
3929 | \n\ | |
3930 | See also the \"delete\" command which clears breakpoints by number."); | |
3931 | ||
3932 | add_com ("break", class_breakpoint, break_command, | |
3933 | "Set breakpoint at specified line or function.\n\ | |
3934 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
3935 | If line number is specified, break at start of code for that line.\n\ | |
3936 | If function is specified, break at start of code for that function.\n\ | |
3937 | If an address is specified, break at that exact address.\n\ | |
3938 | With no arg, uses current execution address of selected stack frame.\n\ | |
3939 | This is useful for breaking on return to a stack frame.\n\ | |
3940 | \n\ | |
3941 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
3942 | \n\ | |
3943 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
3944 | add_com_alias ("b", "break", class_run, 1); | |
3945 | add_com_alias ("br", "break", class_run, 1); | |
3946 | add_com_alias ("bre", "break", class_run, 1); | |
3947 | add_com_alias ("brea", "break", class_run, 1); | |
3948 | ||
3949 | add_info ("breakpoints", breakpoints_info, | |
80ba48f5 SG |
3950 | "Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
3951 | The \"Type\" column indicates one of:\n\ | |
423e9664 SG |
3952 | \tbreakpoint - normal breakpoint\n\ |
3953 | \twatchpoint - watchpoint\n\ | |
80ba48f5 SG |
3954 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
3955 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
3956 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
3957 | address and file/line number respectively.\n\n\ | |
3958 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
3959 | are set to the address of the last breakpoint listed.\n\n\ | |
3960 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
3961 | breakpoint set."); | |
3962 | ||
9b280a7f JG |
3963 | #if MAINTENANCE_CMDS |
3964 | ||
3965 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, | |
bd5635a1 | 3966 | "Status of all breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 3967 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
3968 | \tbreakpoint - normal breakpoint\n\ |
3969 | \twatchpoint - watchpoint\n\ | |
3970 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
3971 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
3972 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
3973 | \tfinish - internal breakpoint used by the \"finish\" command\n\ | |
80ba48f5 SG |
3974 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
3975 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
3976 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
3977 | address and file/line number respectively.\n\n\ | |
bd5635a1 RP |
3978 | Convenience variable \"$_\" and default examine address for \"x\"\n\ |
3979 | are set to the address of the last breakpoint listed.\n\n\ | |
3980 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
9b280a7f JG |
3981 | breakpoint set.", |
3982 | &maintenanceinfolist); | |
3983 | ||
3984 | #endif /* MAINTENANCE_CMDS */ | |
bd5635a1 RP |
3985 | |
3986 | add_com ("catch", class_breakpoint, catch_command, | |
3987 | "Set breakpoints to catch exceptions that are raised.\n\ | |
3988 | Argument may be a single exception to catch, multiple exceptions\n\ | |
3989 | to catch, or the default exception \"default\". If no arguments\n\ | |
3990 | are given, breakpoints are set at all exception handlers catch clauses\n\ | |
3991 | within the current scope.\n\ | |
3992 | \n\ | |
3993 | A condition specified for the catch applies to all breakpoints set\n\ | |
3994 | with this command\n\ | |
3995 | \n\ | |
3996 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
3997 | ||
3998 | add_com ("watch", class_breakpoint, watch_command, | |
3999 | "Set a watchpoint for an expression.\n\ | |
4000 | A watchpoint stops execution of your program whenever the value of\n\ | |
4001 | an expression changes."); | |
4002 | ||
11054881 KH |
4003 | add_com ("rwatch", class_breakpoint, rwatch_command, |
4004 | "Set a read watchpoint for an expression.\n\ | |
4005 | A watchpoint stops execution of your program whenever the value of\n\ | |
4006 | an expression is read."); | |
4007 | ||
4008 | add_com ("awatch", class_breakpoint, awatch_command, | |
4009 | "Set a watchpoint for an expression.\n\ | |
4010 | A watchpoint stops execution of your program whenever the value of\n\ | |
4011 | an expression is either read or written."); | |
4012 | ||
c8950965 JG |
4013 | add_info ("watchpoints", breakpoints_info, |
4014 | "Synonym for ``info breakpoints''."); | |
9f577285 | 4015 | |
bd5635a1 | 4016 | } |
1eeba686 | 4017 | |
2d313932 JK |
4018 | /* OK, when we call objfile_relocate, we need to relocate breakpoints |
4019 | too. breakpoint_re_set is not a good choice--for example, if | |
4020 | addr_string contains just a line number without a file name the | |
4021 | breakpoint might get set in a different file. In general, there is | |
4022 | no need to go all the way back to the user's string (though this might | |
4023 | work if some effort were made to canonicalize it), since symtabs and | |
4024 | everything except addresses are still valid. | |
1eeba686 | 4025 | |
2d313932 JK |
4026 | Probably the best way to solve this is to have each breakpoint save |
4027 | the objfile and the section number that was used to set it (if set | |
4028 | by "*addr", probably it is best to use find_pc_line to get a symtab | |
4029 | and use the objfile and block_line_section for that symtab). Then | |
4030 | objfile_relocate can call fixup_breakpoints with the objfile and | |
4031 | the new_offsets, and it can relocate only the appropriate breakpoints. */ | |
1eeba686 | 4032 | |
2d313932 JK |
4033 | #ifdef IBM6000_TARGET |
4034 | /* But for now, just kludge it based on the concept that before an | |
4035 | objfile is relocated the breakpoint is below 0x10000000, and afterwards | |
4036 | it is higher, so that way we only relocate each breakpoint once. */ | |
1eeba686 | 4037 | |
1eeba686 PB |
4038 | void |
4039 | fixup_breakpoints (low, high, delta) | |
4040 | CORE_ADDR low; | |
4041 | CORE_ADDR high; | |
4042 | CORE_ADDR delta; | |
4043 | { | |
4044 | struct breakpoint *b; | |
1eeba686 PB |
4045 | |
4046 | ALL_BREAKPOINTS (b) | |
4047 | { | |
4048 | if (b->address >= low && b->address <= high) | |
4049 | b->address += delta; | |
4050 | } | |
4051 | } | |
4052 | #endif |