Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* Everything about breakpoints, for GDB. |
30875e1c | 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc. |
bd5635a1 RP |
3 | |
4 | This file is part of GDB. | |
5 | ||
bdbd5f50 | 6 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 7 | it under the terms of the GNU General Public License as published by |
bdbd5f50 JG |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
bd5635a1 | 10 | |
bdbd5f50 | 11 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
bdbd5f50 JG |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 19 | |
bd5635a1 | 20 | #include "defs.h" |
1eeba686 | 21 | #include <ctype.h> |
bd5635a1 RP |
22 | #include "symtab.h" |
23 | #include "frame.h" | |
24 | #include "breakpoint.h" | |
30875e1c | 25 | #include "gdbtypes.h" |
bd5635a1 RP |
26 | #include "expression.h" |
27 | #include "gdbcore.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "value.h" | |
30 | #include "ctype.h" | |
31 | #include "command.h" | |
32 | #include "inferior.h" | |
199b2450 | 33 | #include "thread.h" |
bd5635a1 | 34 | #include "target.h" |
d3b9c0df | 35 | #include "language.h" |
bd5635a1 | 36 | #include <string.h> |
423e9664 | 37 | #include "demangle.h" |
bd5635a1 | 38 | |
30875e1c SG |
39 | /* local function prototypes */ |
40 | ||
41 | static void | |
42 | catch_command_1 PARAMS ((char *, int, int)); | |
43 | ||
44 | static void | |
45 | enable_delete_command PARAMS ((char *, int)); | |
46 | ||
47 | static void | |
48 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
49 | ||
50 | static void | |
51 | enable_once_command PARAMS ((char *, int)); | |
52 | ||
53 | static void | |
54 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
55 | ||
56 | static void | |
57 | disable_command PARAMS ((char *, int)); | |
58 | ||
59 | static void | |
60 | disable_breakpoint PARAMS ((struct breakpoint *)); | |
61 | ||
62 | static void | |
63 | enable_command PARAMS ((char *, int)); | |
64 | ||
65 | static void | |
66 | enable_breakpoint PARAMS ((struct breakpoint *)); | |
67 | ||
68 | static void | |
69 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); | |
70 | ||
71 | static void | |
72 | ignore_command PARAMS ((char *, int)); | |
73 | ||
74 | static int | |
75 | breakpoint_re_set_one PARAMS ((char *)); | |
76 | ||
77 | static void | |
78 | delete_command PARAMS ((char *, int)); | |
79 | ||
80 | static void | |
81 | clear_command PARAMS ((char *, int)); | |
82 | ||
83 | static void | |
84 | catch_command PARAMS ((char *, int)); | |
85 | ||
86 | static struct symtabs_and_lines | |
87 | get_catch_sals PARAMS ((int)); | |
88 | ||
89 | static void | |
90 | watch_command PARAMS ((char *, int)); | |
91 | ||
999dd04b | 92 | static int |
11054881 | 93 | can_use_hardware_watchpoint PARAMS ((struct value *)); |
999dd04b | 94 | |
30875e1c SG |
95 | static void |
96 | tbreak_command PARAMS ((char *, int)); | |
97 | ||
98 | static void | |
99 | break_command_1 PARAMS ((char *, int, int)); | |
100 | ||
101 | static void | |
102 | mention PARAMS ((struct breakpoint *)); | |
103 | ||
104 | static struct breakpoint * | |
105 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); | |
106 | ||
107 | static void | |
108 | check_duplicates PARAMS ((CORE_ADDR)); | |
109 | ||
110 | static void | |
111 | describe_other_breakpoints PARAMS ((CORE_ADDR)); | |
112 | ||
30875e1c SG |
113 | static void |
114 | breakpoints_info PARAMS ((char *, int)); | |
115 | ||
116 | static void | |
423e9664 | 117 | breakpoint_1 PARAMS ((int, int)); |
30875e1c SG |
118 | |
119 | static bpstat | |
120 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); | |
121 | ||
122 | static int | |
123 | breakpoint_cond_eval PARAMS ((char *)); | |
124 | ||
125 | static void | |
126 | cleanup_executing_breakpoints PARAMS ((int)); | |
127 | ||
128 | static void | |
129 | commands_command PARAMS ((char *, int)); | |
130 | ||
131 | static void | |
132 | condition_command PARAMS ((char *, int)); | |
133 | ||
134 | static int | |
135 | get_number PARAMS ((char **)); | |
136 | ||
137 | static void | |
138 | set_breakpoint_count PARAMS ((int)); | |
139 | ||
999dd04b JL |
140 | static int |
141 | remove_breakpoint PARAMS ((struct breakpoint *)); | |
30875e1c | 142 | |
bd5635a1 RP |
143 | extern int addressprint; /* Print machine addresses? */ |
144 | extern int demangle; /* Print de-mangled symbol names? */ | |
145 | ||
bd5635a1 RP |
146 | /* Are we executing breakpoint commands? */ |
147 | static int executing_breakpoint_commands; | |
148 | ||
cba0d141 JG |
149 | /* Walk the following statement or block through all breakpoints. |
150 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
151 | breakpoint. */ | |
152 | ||
bd5635a1 RP |
153 | #define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) |
154 | ||
cba0d141 JG |
155 | #define ALL_BREAKPOINTS_SAFE(b,tmp) \ |
156 | for (b = breakpoint_chain; \ | |
157 | b? (tmp=b->next, 1): 0; \ | |
158 | b = tmp) | |
159 | ||
999dd04b JL |
160 | /* By default no support for hardware watchpoints is assumed. */ |
161 | #ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT | |
11054881 KH |
162 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) 0 |
163 | #define target_remove_watchpoint(ADDR,LEN,TYPE) -1 | |
164 | #define target_insert_watchpoint(ADDR,LEN,TYPE) -1 | |
165 | #endif | |
166 | ||
167 | #ifndef target_insert_hw_breakpoint | |
168 | #define target_remove_hw_breakpoint(ADDR,SHADOW) -1 | |
169 | #define target_insert_hw_breakpoint(ADDR,SHADOW) -1 | |
170 | #endif | |
171 | ||
172 | #ifndef target_stopped_data_address | |
173 | #define target_stopped_data_address() 0 | |
999dd04b JL |
174 | #endif |
175 | ||
bd5635a1 RP |
176 | /* Chain of all breakpoints defined. */ |
177 | ||
05052b63 | 178 | static struct breakpoint *breakpoint_chain; |
bd5635a1 RP |
179 | |
180 | /* Number of last breakpoint made. */ | |
181 | ||
182 | static int breakpoint_count; | |
183 | ||
184 | /* Set breakpoint count to NUM. */ | |
185 | static void | |
186 | set_breakpoint_count (num) | |
187 | int num; | |
188 | { | |
189 | breakpoint_count = num; | |
190 | set_internalvar (lookup_internalvar ("bpnum"), | |
06b6c733 | 191 | value_from_longest (builtin_type_int, (LONGEST) num)); |
bd5635a1 RP |
192 | } |
193 | ||
194 | /* Default address, symtab and line to put a breakpoint at | |
195 | for "break" command with no arg. | |
196 | if default_breakpoint_valid is zero, the other three are | |
197 | not valid, and "break" with no arg is an error. | |
198 | ||
199 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
200 | ||
201 | int default_breakpoint_valid; | |
202 | CORE_ADDR default_breakpoint_address; | |
203 | struct symtab *default_breakpoint_symtab; | |
204 | int default_breakpoint_line; | |
bd5635a1 RP |
205 | \f |
206 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
207 | Advance *PP after the string and any trailing whitespace. | |
208 | ||
209 | Currently the string can either be a number or "$" followed by the name | |
210 | of a convenience variable. Making it an expression wouldn't work well | |
211 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
212 | static int | |
213 | get_number (pp) | |
214 | char **pp; | |
215 | { | |
216 | int retval; | |
217 | char *p = *pp; | |
218 | ||
219 | if (p == NULL) | |
220 | /* Empty line means refer to the last breakpoint. */ | |
221 | return breakpoint_count; | |
222 | else if (*p == '$') | |
223 | { | |
224 | /* Make a copy of the name, so we can null-terminate it | |
225 | to pass to lookup_internalvar(). */ | |
226 | char *varname; | |
227 | char *start = ++p; | |
82a2edfb | 228 | value_ptr val; |
bd5635a1 RP |
229 | |
230 | while (isalnum (*p) || *p == '_') | |
231 | p++; | |
232 | varname = (char *) alloca (p - start + 1); | |
233 | strncpy (varname, start, p - start); | |
234 | varname[p - start] = '\0'; | |
235 | val = value_of_internalvar (lookup_internalvar (varname)); | |
236 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
237 | error ( | |
238 | "Convenience variables used to specify breakpoints must have integer values." | |
239 | ); | |
240 | retval = (int) value_as_long (val); | |
241 | } | |
242 | else | |
243 | { | |
80ba48f5 SG |
244 | if (*p == '-') |
245 | ++p; | |
bd5635a1 RP |
246 | while (*p >= '0' && *p <= '9') |
247 | ++p; | |
248 | if (p == *pp) | |
249 | /* There is no number here. (e.g. "cond a == b"). */ | |
250 | error_no_arg ("breakpoint number"); | |
251 | retval = atoi (*pp); | |
252 | } | |
253 | if (!(isspace (*p) || *p == '\0')) | |
254 | error ("breakpoint number expected"); | |
255 | while (isspace (*p)) | |
256 | p++; | |
257 | *pp = p; | |
258 | return retval; | |
259 | } | |
260 | \f | |
261 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
262 | ||
263 | static void | |
264 | condition_command (arg, from_tty) | |
265 | char *arg; | |
266 | int from_tty; | |
267 | { | |
268 | register struct breakpoint *b; | |
269 | char *p; | |
270 | register int bnum; | |
271 | ||
272 | if (arg == 0) | |
273 | error_no_arg ("breakpoint number"); | |
274 | ||
275 | p = arg; | |
276 | bnum = get_number (&p); | |
277 | ||
278 | ALL_BREAKPOINTS (b) | |
279 | if (b->number == bnum) | |
280 | { | |
281 | if (b->cond) | |
282 | { | |
c8950965 | 283 | free ((PTR)b->cond); |
bd5635a1 RP |
284 | b->cond = 0; |
285 | } | |
286 | if (b->cond_string != NULL) | |
c8950965 | 287 | free ((PTR)b->cond_string); |
bd5635a1 RP |
288 | |
289 | if (*p == 0) | |
290 | { | |
291 | b->cond = 0; | |
292 | b->cond_string = NULL; | |
293 | if (from_tty) | |
423e9664 | 294 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); |
bd5635a1 RP |
295 | } |
296 | else | |
297 | { | |
298 | arg = p; | |
299 | /* I don't know if it matters whether this is the string the user | |
300 | typed in or the decompiled expression. */ | |
301 | b->cond_string = savestring (arg, strlen (arg)); | |
d3b9c0df | 302 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); |
bd5635a1 RP |
303 | if (*arg) |
304 | error ("Junk at end of expression"); | |
305 | } | |
306 | return; | |
307 | } | |
308 | ||
309 | error ("No breakpoint number %d.", bnum); | |
310 | } | |
311 | ||
bdbd5f50 | 312 | /* ARGSUSED */ |
bd5635a1 RP |
313 | static void |
314 | commands_command (arg, from_tty) | |
315 | char *arg; | |
316 | int from_tty; | |
317 | { | |
318 | register struct breakpoint *b; | |
319 | char *p; | |
320 | register int bnum; | |
321 | struct command_line *l; | |
322 | ||
323 | /* If we allowed this, we would have problems with when to | |
324 | free the storage, if we change the commands currently | |
325 | being read from. */ | |
326 | ||
327 | if (executing_breakpoint_commands) | |
328 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
329 | ||
330 | p = arg; | |
331 | bnum = get_number (&p); | |
332 | if (p && *p) | |
333 | error ("Unexpected extra arguments following breakpoint number."); | |
334 | ||
335 | ALL_BREAKPOINTS (b) | |
336 | if (b->number == bnum) | |
337 | { | |
bdbd5f50 | 338 | if (from_tty && input_from_terminal_p ()) |
9b280a7f | 339 | printf_filtered ("Type commands for when breakpoint %d is hit, one per line.\n\ |
bd5635a1 | 340 | End with a line saying just \"end\".\n", bnum); |
bd5635a1 RP |
341 | l = read_command_lines (); |
342 | free_command_lines (&b->commands); | |
343 | b->commands = l; | |
6c803036 | 344 | breakpoints_changed (); |
bd5635a1 RP |
345 | return; |
346 | } | |
347 | error ("No breakpoint number %d.", bnum); | |
348 | } | |
349 | \f | |
31ef19fc JK |
350 | extern int memory_breakpoint_size; /* from mem-break.c */ |
351 | ||
352 | /* Like target_read_memory() but if breakpoints are inserted, return | |
30875e1c SG |
353 | the shadow contents instead of the breakpoints themselves. |
354 | ||
355 | Read "memory data" from whatever target or inferior we have. | |
356 | Returns zero if successful, errno value if not. EIO is used | |
357 | for address out of bounds. If breakpoints are inserted, returns | |
358 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
359 | ||
31ef19fc JK |
360 | int |
361 | read_memory_nobpt (memaddr, myaddr, len) | |
362 | CORE_ADDR memaddr; | |
363 | char *myaddr; | |
364 | unsigned len; | |
365 | { | |
366 | int status; | |
367 | struct breakpoint *b; | |
368 | ||
369 | if (memory_breakpoint_size < 0) | |
5af4f5f6 JK |
370 | /* No breakpoints on this machine. FIXME: This should be |
371 | dependent on the debugging target. Probably want | |
372 | target_insert_breakpoint to return a size, saying how many | |
373 | bytes of the shadow contents are used, or perhaps have | |
374 | something like target_xfer_shadow. */ | |
31ef19fc JK |
375 | return target_read_memory (memaddr, myaddr, len); |
376 | ||
377 | ALL_BREAKPOINTS (b) | |
378 | { | |
999dd04b JL |
379 | if (b->type == bp_watchpoint |
380 | || b->type == bp_hardware_watchpoint | |
11054881 KH |
381 | || b->type == bp_read_watchpoint |
382 | || b->type == bp_access_watchpoint | |
999dd04b | 383 | || !b->inserted) |
31ef19fc JK |
384 | continue; |
385 | else if (b->address + memory_breakpoint_size <= memaddr) | |
386 | /* The breakpoint is entirely before the chunk of memory | |
387 | we are reading. */ | |
388 | continue; | |
389 | else if (b->address >= memaddr + len) | |
390 | /* The breakpoint is entirely after the chunk of memory we | |
391 | are reading. */ | |
392 | continue; | |
393 | else | |
394 | { | |
395 | /* Copy the breakpoint from the shadow contents, and recurse | |
396 | for the things before and after. */ | |
397 | ||
398 | /* Addresses and length of the part of the breakpoint that | |
399 | we need to copy. */ | |
400 | CORE_ADDR membpt = b->address; | |
401 | unsigned int bptlen = memory_breakpoint_size; | |
402 | /* Offset within shadow_contents. */ | |
403 | int bptoffset = 0; | |
404 | ||
405 | if (membpt < memaddr) | |
406 | { | |
407 | /* Only copy the second part of the breakpoint. */ | |
408 | bptlen -= memaddr - membpt; | |
409 | bptoffset = memaddr - membpt; | |
410 | membpt = memaddr; | |
411 | } | |
412 | ||
413 | if (membpt + bptlen > memaddr + len) | |
414 | { | |
415 | /* Only copy the first part of the breakpoint. */ | |
416 | bptlen -= (membpt + bptlen) - (memaddr + len); | |
417 | } | |
418 | ||
4ed3a9ea FF |
419 | memcpy (myaddr + membpt - memaddr, |
420 | b->shadow_contents + bptoffset, bptlen); | |
31ef19fc JK |
421 | |
422 | if (membpt > memaddr) | |
423 | { | |
424 | /* Copy the section of memory before the breakpoint. */ | |
425 | status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr); | |
426 | if (status != 0) | |
427 | return status; | |
428 | } | |
429 | ||
430 | if (membpt + bptlen < memaddr + len) | |
431 | { | |
432 | /* Copy the section of memory after the breakpoint. */ | |
433 | status = read_memory_nobpt | |
434 | (membpt + bptlen, | |
435 | myaddr + membpt + bptlen - memaddr, | |
436 | memaddr + len - (membpt + bptlen)); | |
437 | if (status != 0) | |
438 | return status; | |
439 | } | |
440 | return 0; | |
441 | } | |
442 | } | |
443 | /* Nothing overlaps. Just call read_memory_noerr. */ | |
444 | return target_read_memory (memaddr, myaddr, len); | |
445 | } | |
446 | \f | |
bd5635a1 RP |
447 | /* insert_breakpoints is used when starting or continuing the program. |
448 | remove_breakpoints is used when the program stops. | |
449 | Both return zero if successful, | |
450 | or an `errno' value if could not write the inferior. */ | |
451 | ||
452 | int | |
453 | insert_breakpoints () | |
454 | { | |
455 | register struct breakpoint *b; | |
456 | int val = 0; | |
457 | int disabled_breaks = 0; | |
458 | ||
459 | ALL_BREAKPOINTS (b) | |
30875e1c | 460 | if (b->type != bp_watchpoint |
999dd04b | 461 | && b->type != bp_hardware_watchpoint |
11054881 KH |
462 | && b->type != bp_read_watchpoint |
463 | && b->type != bp_access_watchpoint | |
bd5635a1 RP |
464 | && b->enable != disabled |
465 | && ! b->inserted | |
466 | && ! b->duplicate) | |
467 | { | |
11054881 KH |
468 | if (b->type == bp_hardware_breakpoint) |
469 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
470 | else | |
471 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
bd5635a1 RP |
472 | if (val) |
473 | { | |
474 | /* Can't set the breakpoint. */ | |
475 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
476 | if (DISABLE_UNSETTABLE_BREAK (b->address)) | |
477 | { | |
478 | val = 0; | |
479 | b->enable = disabled; | |
480 | if (!disabled_breaks) | |
481 | { | |
05052b63 | 482 | target_terminal_ours_for_output (); |
199b2450 | 483 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 484 | "Cannot insert breakpoint %d:\n", b->number); |
bd5635a1 RP |
485 | printf_filtered ("Disabling shared library breakpoints:\n"); |
486 | } | |
487 | disabled_breaks = 1; | |
488 | printf_filtered ("%d ", b->number); | |
489 | } | |
490 | else | |
491 | #endif | |
492 | { | |
05052b63 | 493 | target_terminal_ours_for_output (); |
199b2450 | 494 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
d3b9c0df | 495 | #ifdef ONE_PROCESS_WRITETEXT |
199b2450 | 496 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 497 | "The same program may be running in another process.\n"); |
d3b9c0df | 498 | #endif |
bd5635a1 RP |
499 | memory_error (val, b->address); /* which bombs us out */ |
500 | } | |
501 | } | |
502 | else | |
503 | b->inserted = 1; | |
504 | } | |
11054881 KH |
505 | else if ((b->type == bp_hardware_watchpoint || |
506 | b->type == bp_read_watchpoint || | |
507 | b->type == bp_access_watchpoint) | |
999dd04b JL |
508 | && b->enable == enabled |
509 | && ! b->inserted | |
510 | && ! b->duplicate) | |
511 | { | |
512 | FRAME saved_frame; | |
513 | int saved_level, within_current_scope; | |
514 | value_ptr mark = value_mark (); | |
515 | value_ptr v; | |
516 | ||
517 | /* Save the current frame and level so we can restore it after | |
518 | evaluating the watchpoint expression on its own frame. */ | |
519 | saved_frame = selected_frame; | |
520 | saved_level = selected_frame_level; | |
521 | ||
522 | /* Determine if the watchpoint is within scope. */ | |
523 | if (b->exp_valid_block == NULL) | |
524 | within_current_scope = 1; | |
525 | else | |
526 | { | |
527 | FRAME fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
528 | within_current_scope = (fr != NULL); | |
529 | if (within_current_scope) | |
530 | select_frame (fr, -1); | |
531 | } | |
532 | ||
533 | if (within_current_scope) | |
534 | { | |
535 | /* Evaluate the expression and cut the chain of values | |
536 | produced off from the value chain. */ | |
537 | v = evaluate_expression (b->exp); | |
538 | value_release_to_mark (mark); | |
539 | ||
540 | b->val_chain = v; | |
541 | b->inserted = 1; | |
542 | ||
543 | /* Look at each value on the value chain. */ | |
544 | for ( ; v; v=v->next) | |
545 | { | |
546 | /* If it's a memory location, then we must watch it. */ | |
547 | if (v->lval == lval_memory) | |
548 | { | |
11054881 | 549 | int addr, len, type; |
999dd04b JL |
550 | |
551 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
552 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 KH |
553 | type = 0; |
554 | if (b->type == bp_read_watchpoint) | |
555 | type = 1; | |
556 | else if (b->type == bp_access_watchpoint) | |
557 | type = 2; | |
558 | ||
559 | val = target_insert_watchpoint (addr, len, type); | |
999dd04b JL |
560 | if (val == -1) |
561 | { | |
562 | b->inserted = 0; | |
563 | break; | |
564 | } | |
565 | val = 0; | |
566 | } | |
567 | } | |
568 | /* Failure to insert a watchpoint on any memory value in the | |
569 | value chain brings us here. */ | |
570 | if (!b->inserted) | |
571 | warning ("Hardware watchpoint %d: Could not insert watchpoint\n", | |
572 | b->number); | |
573 | } | |
574 | else | |
575 | { | |
576 | printf_filtered ("\ | |
577 | Hardware watchpoint %d deleted because the program has left the block in\n\ | |
578 | which its expression is valid.\n", b->number); | |
579 | if (b->related_breakpoint) | |
580 | delete_breakpoint (b->related_breakpoint); | |
581 | delete_breakpoint (b); | |
582 | } | |
583 | ||
584 | /* Restore the frame and level. */ | |
585 | select_frame (saved_frame, saved_level); | |
586 | } | |
bd5635a1 RP |
587 | if (disabled_breaks) |
588 | printf_filtered ("\n"); | |
589 | return val; | |
590 | } | |
591 | ||
999dd04b | 592 | |
bd5635a1 RP |
593 | int |
594 | remove_breakpoints () | |
595 | { | |
596 | register struct breakpoint *b; | |
597 | int val; | |
598 | ||
bd5635a1 | 599 | ALL_BREAKPOINTS (b) |
999dd04b JL |
600 | { |
601 | if (b->inserted) | |
602 | { | |
603 | val = remove_breakpoint (b); | |
604 | if (val != 0) | |
605 | return val; | |
606 | } | |
607 | } | |
608 | return 0; | |
609 | } | |
bd5635a1 | 610 | |
999dd04b JL |
611 | |
612 | static int | |
613 | remove_breakpoint (b) | |
614 | struct breakpoint *b; | |
615 | { | |
616 | int val; | |
617 | ||
618 | if (b->type != bp_watchpoint | |
11054881 KH |
619 | && b->type != bp_hardware_watchpoint |
620 | && b->type != bp_read_watchpoint | |
621 | && b->type != bp_access_watchpoint) | |
999dd04b | 622 | { |
11054881 KH |
623 | if (b->type == bp_hardware_breakpoint) |
624 | val = target_remove_hw_breakpoint(b->address, b->shadow_contents); | |
625 | else | |
626 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
999dd04b JL |
627 | if (val) |
628 | return val; | |
629 | b->inserted = 0; | |
630 | } | |
11054881 KH |
631 | else if ((b->type == bp_hardware_watchpoint || |
632 | b->type == bp_read_watchpoint || | |
633 | b->type == bp_access_watchpoint) | |
999dd04b JL |
634 | && b->enable == enabled |
635 | && ! b->duplicate) | |
636 | { | |
637 | value_ptr v, n; | |
638 | ||
639 | b->inserted = 0; | |
640 | /* Walk down the saved value chain. */ | |
641 | for (v = b->val_chain; v; v = v->next) | |
642 | { | |
643 | /* For each memory reference remove the watchpoint | |
644 | at that address. */ | |
645 | if (v->lval == lval_memory) | |
646 | { | |
647 | int addr, len; | |
648 | ||
649 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
650 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 | 651 | val = target_remove_watchpoint (addr, len, b->type); |
999dd04b JL |
652 | if (val == -1) |
653 | b->inserted = 1; | |
654 | val = 0; | |
655 | } | |
656 | } | |
657 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
658 | if (b->inserted) | |
659 | error ("Hardware watchpoint %d: Could not remove watchpoint\n", | |
660 | b->number); | |
661 | ||
662 | /* Free the saved value chain. We will construct a new one | |
663 | the next time the watchpoint is inserted. */ | |
664 | for (v = b->val_chain; v; v = n) | |
665 | { | |
666 | n = v->next; | |
667 | value_free (v); | |
668 | } | |
669 | b->val_chain = NULL; | |
670 | } | |
bd5635a1 RP |
671 | return 0; |
672 | } | |
673 | ||
cf3e377e | 674 | /* Clear the "inserted" flag in all breakpoints. */ |
bd5635a1 RP |
675 | |
676 | void | |
677 | mark_breakpoints_out () | |
678 | { | |
679 | register struct breakpoint *b; | |
680 | ||
681 | ALL_BREAKPOINTS (b) | |
682 | b->inserted = 0; | |
683 | } | |
684 | ||
cf3e377e JK |
685 | /* Clear the "inserted" flag in all breakpoints and delete any breakpoints |
686 | which should go away between runs of the program. */ | |
687 | ||
688 | void | |
689 | breakpoint_init_inferior () | |
690 | { | |
691 | register struct breakpoint *b, *temp; | |
692 | ||
693 | ALL_BREAKPOINTS_SAFE (b, temp) | |
694 | { | |
695 | b->inserted = 0; | |
696 | ||
697 | /* If the call dummy breakpoint is at the entry point it will | |
698 | cause problems when the inferior is rerun, so we better | |
699 | get rid of it. */ | |
700 | if (b->type == bp_call_dummy) | |
701 | delete_breakpoint (b); | |
999dd04b JL |
702 | |
703 | /* Likewise for scope breakpoints. */ | |
704 | if (b->type == bp_watchpoint_scope) | |
705 | delete_breakpoint (b); | |
706 | ||
707 | /* Likewise for watchpoints on local expressions. */ | |
11054881 KH |
708 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint || |
709 | b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) | |
999dd04b JL |
710 | && b->exp_valid_block != NULL) |
711 | delete_breakpoint (b); | |
cf3e377e JK |
712 | } |
713 | } | |
714 | ||
bd5635a1 RP |
715 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. |
716 | When continuing from a location with a breakpoint, | |
717 | we actually single step once before calling insert_breakpoints. */ | |
718 | ||
719 | int | |
720 | breakpoint_here_p (pc) | |
721 | CORE_ADDR pc; | |
722 | { | |
723 | register struct breakpoint *b; | |
724 | ||
725 | ALL_BREAKPOINTS (b) | |
726 | if (b->enable != disabled && b->address == pc) | |
727 | return 1; | |
728 | ||
729 | return 0; | |
730 | } | |
199b2450 | 731 | |
05052b63 JK |
732 | /* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY |
733 | because figuring out the saved SP would take too much time, at least using | |
734 | get_saved_register on the 68k. This means that for this function to | |
735 | work right a port must use the bp_call_dummy breakpoint. */ | |
736 | ||
737 | int | |
738 | frame_in_dummy (frame) | |
739 | FRAME frame; | |
740 | { | |
741 | struct breakpoint *b; | |
742 | ||
d7e7e851 | 743 | #ifdef CALL_DUMMY |
05052b63 JK |
744 | ALL_BREAKPOINTS (b) |
745 | { | |
d7e7e851 JK |
746 | static unsigned LONGEST dummy[] = CALL_DUMMY; |
747 | ||
05052b63 | 748 | if (b->type == bp_call_dummy |
d7e7e851 JK |
749 | && b->frame == frame->frame |
750 | ||
751 | /* We need to check the PC as well as the frame on the sparc, | |
752 | for signals.exp in the testsuite. */ | |
753 | && (frame->pc | |
754 | >= (b->address | |
755 | - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE)) | |
756 | && frame->pc <= b->address) | |
05052b63 JK |
757 | return 1; |
758 | } | |
d7e7e851 | 759 | #endif /* CALL_DUMMY */ |
05052b63 JK |
760 | return 0; |
761 | } | |
762 | ||
199b2450 TL |
763 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC |
764 | is valid for process/thread PID. */ | |
765 | ||
766 | int | |
767 | breakpoint_thread_match (pc, pid) | |
768 | CORE_ADDR pc; | |
769 | int pid; | |
770 | { | |
771 | struct breakpoint *b; | |
772 | int thread; | |
773 | ||
774 | thread = pid_to_thread_id (pid); | |
775 | ||
776 | ALL_BREAKPOINTS (b) | |
777 | if (b->enable != disabled | |
778 | && b->address == pc | |
779 | && (b->thread == -1 || b->thread == thread)) | |
780 | return 1; | |
781 | ||
782 | return 0; | |
783 | } | |
784 | ||
bd5635a1 RP |
785 | \f |
786 | /* bpstat stuff. External routines' interfaces are documented | |
787 | in breakpoint.h. */ | |
30875e1c SG |
788 | |
789 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
790 | Also free any storage that is part of a bpstat. */ | |
791 | ||
bd5635a1 RP |
792 | void |
793 | bpstat_clear (bsp) | |
794 | bpstat *bsp; | |
795 | { | |
796 | bpstat p; | |
797 | bpstat q; | |
798 | ||
799 | if (bsp == 0) | |
800 | return; | |
801 | p = *bsp; | |
802 | while (p != NULL) | |
803 | { | |
804 | q = p->next; | |
805 | if (p->old_val != NULL) | |
806 | value_free (p->old_val); | |
c8950965 | 807 | free ((PTR)p); |
bd5635a1 RP |
808 | p = q; |
809 | } | |
810 | *bsp = NULL; | |
811 | } | |
812 | ||
30875e1c SG |
813 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
814 | is part of the bpstat is copied as well. */ | |
815 | ||
bd5635a1 RP |
816 | bpstat |
817 | bpstat_copy (bs) | |
818 | bpstat bs; | |
819 | { | |
820 | bpstat p = NULL; | |
821 | bpstat tmp; | |
fee933f1 | 822 | bpstat retval = NULL; |
bd5635a1 RP |
823 | |
824 | if (bs == NULL) | |
825 | return bs; | |
826 | ||
827 | for (; bs != NULL; bs = bs->next) | |
828 | { | |
829 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4ed3a9ea | 830 | memcpy (tmp, bs, sizeof (*tmp)); |
bd5635a1 RP |
831 | if (p == NULL) |
832 | /* This is the first thing in the chain. */ | |
833 | retval = tmp; | |
834 | else | |
835 | p->next = tmp; | |
836 | p = tmp; | |
837 | } | |
838 | p->next = NULL; | |
839 | return retval; | |
840 | } | |
841 | ||
30875e1c SG |
842 | /* Find the bpstat associated with this breakpoint */ |
843 | ||
844 | bpstat | |
845 | bpstat_find_breakpoint(bsp, breakpoint) | |
846 | bpstat bsp; | |
847 | struct breakpoint *breakpoint; | |
848 | { | |
849 | if (bsp == NULL) return NULL; | |
850 | ||
851 | for (;bsp != NULL; bsp = bsp->next) { | |
852 | if (bsp->breakpoint_at == breakpoint) return bsp; | |
853 | } | |
854 | return NULL; | |
855 | } | |
856 | ||
857 | /* Return the breakpoint number of the first breakpoint we are stopped | |
858 | at. *BSP upon return is a bpstat which points to the remaining | |
859 | breakpoints stopped at (but which is not guaranteed to be good for | |
860 | anything but further calls to bpstat_num). | |
861 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
862 | ||
bd5635a1 RP |
863 | int |
864 | bpstat_num (bsp) | |
865 | bpstat *bsp; | |
866 | { | |
867 | struct breakpoint *b; | |
868 | ||
869 | if ((*bsp) == NULL) | |
870 | return 0; /* No more breakpoint values */ | |
871 | else | |
872 | { | |
873 | b = (*bsp)->breakpoint_at; | |
874 | *bsp = (*bsp)->next; | |
875 | if (b == NULL) | |
876 | return -1; /* breakpoint that's been deleted since */ | |
877 | else | |
878 | return b->number; /* We have its number */ | |
879 | } | |
880 | } | |
881 | ||
30875e1c SG |
882 | /* Modify BS so that the actions will not be performed. */ |
883 | ||
bd5635a1 RP |
884 | void |
885 | bpstat_clear_actions (bs) | |
886 | bpstat bs; | |
887 | { | |
888 | for (; bs != NULL; bs = bs->next) | |
889 | { | |
890 | bs->commands = NULL; | |
891 | if (bs->old_val != NULL) | |
892 | { | |
893 | value_free (bs->old_val); | |
894 | bs->old_val = NULL; | |
895 | } | |
896 | } | |
897 | } | |
898 | ||
bdbd5f50 JG |
899 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
900 | /* ARGSUSED */ | |
901 | static void | |
902 | cleanup_executing_breakpoints (ignore) | |
903 | int ignore; | |
904 | { | |
905 | executing_breakpoint_commands = 0; | |
906 | } | |
907 | ||
bd5635a1 RP |
908 | /* Execute all the commands associated with all the breakpoints at this |
909 | location. Any of these commands could cause the process to proceed | |
910 | beyond this point, etc. We look out for such changes by checking | |
911 | the global "breakpoint_proceeded" after each command. */ | |
30875e1c | 912 | |
bd5635a1 RP |
913 | void |
914 | bpstat_do_actions (bsp) | |
915 | bpstat *bsp; | |
916 | { | |
917 | bpstat bs; | |
bdbd5f50 JG |
918 | struct cleanup *old_chain; |
919 | ||
920 | executing_breakpoint_commands = 1; | |
921 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
bd5635a1 RP |
922 | |
923 | top: | |
924 | bs = *bsp; | |
925 | ||
bd5635a1 RP |
926 | breakpoint_proceeded = 0; |
927 | for (; bs != NULL; bs = bs->next) | |
928 | { | |
929 | while (bs->commands) | |
930 | { | |
931 | char *line = bs->commands->line; | |
932 | bs->commands = bs->commands->next; | |
933 | execute_command (line, 0); | |
934 | /* If the inferior is proceeded by the command, bomb out now. | |
935 | The bpstat chain has been blown away by wait_for_inferior. | |
936 | But since execution has stopped again, there is a new bpstat | |
937 | to look at, so start over. */ | |
938 | if (breakpoint_proceeded) | |
939 | goto top; | |
940 | } | |
941 | } | |
bd5635a1 RP |
942 | |
943 | executing_breakpoint_commands = 0; | |
bdbd5f50 | 944 | discard_cleanups (old_chain); |
bd5635a1 RP |
945 | } |
946 | ||
8af68e4e JK |
947 | /* This is the normal print_it function for a bpstat. In the future, |
948 | much of this logic could (should?) be moved to bpstat_stop_status, | |
949 | by having it set different print_it functions. */ | |
30875e1c | 950 | |
8af68e4e JK |
951 | static int |
952 | print_it_normal (bs) | |
bd5635a1 RP |
953 | bpstat bs; |
954 | { | |
955 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
956 | which has since been deleted. */ | |
8af68e4e | 957 | if (bs->breakpoint_at == NULL |
30875e1c | 958 | || (bs->breakpoint_at->type != bp_breakpoint |
11054881 | 959 | && bs->breakpoint_at->type != bp_hardware_breakpoint |
999dd04b | 960 | && bs->breakpoint_at->type != bp_watchpoint |
11054881 KH |
961 | && bs->breakpoint_at->type != bp_read_watchpoint |
962 | && bs->breakpoint_at->type != bp_access_watchpoint | |
999dd04b | 963 | && bs->breakpoint_at->type != bp_hardware_watchpoint)) |
bd5635a1 | 964 | return 0; |
bd5635a1 | 965 | |
11054881 KH |
966 | if (bs->breakpoint_at->type == bp_breakpoint || |
967 | bs->breakpoint_at->type == bp_hardware_breakpoint) | |
bd5635a1 RP |
968 | { |
969 | /* I think the user probably only wants to see one breakpoint | |
970 | number, not all of them. */ | |
f2d9c058 | 971 | annotate_breakpoint (bs->breakpoint_at->number); |
bd5635a1 RP |
972 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); |
973 | return 0; | |
974 | } | |
11054881 KH |
975 | else if ((bs->old_val != NULL) && |
976 | (bs->breakpoint_at->type == bp_watchpoint || | |
977 | bs->breakpoint_at->type == bp_access_watchpoint || | |
978 | bs->breakpoint_at->type == bp_hardware_watchpoint)) | |
bd5635a1 | 979 | { |
f2d9c058 | 980 | annotate_watchpoint (bs->breakpoint_at->number); |
11054881 | 981 | mention (bs->breakpoint_at); |
bd5635a1 | 982 | printf_filtered ("\nOld value = "); |
199b2450 | 983 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); |
bd5635a1 | 984 | printf_filtered ("\nNew value = "); |
199b2450 | 985 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
bd5635a1 RP |
986 | Val_pretty_default); |
987 | printf_filtered ("\n"); | |
988 | value_free (bs->old_val); | |
989 | bs->old_val = NULL; | |
bd2f0c85 JL |
990 | /* More than one watchpoint may have been triggered. */ |
991 | return -1; | |
bd5635a1 | 992 | } |
11054881 KH |
993 | else if (bs->breakpoint_at->type == bp_access_watchpoint || |
994 | bs->breakpoint_at->type == bp_read_watchpoint) | |
995 | { | |
996 | mention (bs->breakpoint_at); | |
997 | printf_filtered ("\nValue = "); | |
998 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
999 | Val_pretty_default); | |
1000 | printf_filtered ("\n"); | |
1001 | return -1; | |
1002 | } | |
8af68e4e JK |
1003 | /* We can't deal with it. Maybe another member of the bpstat chain can. */ |
1004 | return -1; | |
1005 | } | |
1006 | ||
1007 | /* Print a message indicating what happened. Returns nonzero to | |
1008 | say that only the source line should be printed after this (zero | |
1009 | return means print the frame as well as the source line). */ | |
3f031adf | 1010 | /* Currently we always return zero. */ |
8af68e4e JK |
1011 | int |
1012 | bpstat_print (bs) | |
1013 | bpstat bs; | |
1014 | { | |
1015 | int val; | |
1016 | ||
1017 | if (bs == NULL) | |
1018 | return 0; | |
bd5635a1 | 1019 | |
8af68e4e JK |
1020 | val = (*bs->print_it) (bs); |
1021 | if (val >= 0) | |
1022 | return val; | |
1023 | ||
fcb887ff JK |
1024 | /* Maybe another breakpoint in the chain caused us to stop. |
1025 | (Currently all watchpoints go on the bpstat whether hit or | |
1026 | not. That probably could (should) be changed, provided care is taken | |
1027 | with respect to bpstat_explains_signal). */ | |
1028 | if (bs->next) | |
1029 | return bpstat_print (bs->next); | |
1030 | ||
cabd4da6 | 1031 | /* We reached the end of the chain without printing anything. */ |
bd5635a1 RP |
1032 | return 0; |
1033 | } | |
1034 | ||
1035 | /* Evaluate the expression EXP and return 1 if value is zero. | |
1036 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
bdbd5f50 | 1037 | The argument is a "struct expression *" that has been cast to char * to |
bd5635a1 RP |
1038 | make it pass through catch_errors. */ |
1039 | ||
1040 | static int | |
1041 | breakpoint_cond_eval (exp) | |
bdbd5f50 | 1042 | char *exp; |
bd5635a1 | 1043 | { |
11054881 KH |
1044 | value_ptr mark = value_mark (); |
1045 | int i = !value_true (evaluate_expression ((struct expression *)exp)); | |
1046 | value_free_to_mark (mark); | |
1047 | return i; | |
bd5635a1 RP |
1048 | } |
1049 | ||
1050 | /* Allocate a new bpstat and chain it to the current one. */ | |
1051 | ||
1052 | static bpstat | |
1053 | bpstat_alloc (b, cbs) | |
1054 | register struct breakpoint *b; | |
1055 | bpstat cbs; /* Current "bs" value */ | |
1056 | { | |
1057 | bpstat bs; | |
1058 | ||
1059 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
1060 | cbs->next = bs; | |
1061 | bs->breakpoint_at = b; | |
1062 | /* If the condition is false, etc., don't do the commands. */ | |
1063 | bs->commands = NULL; | |
bd5635a1 | 1064 | bs->old_val = NULL; |
8af68e4e | 1065 | bs->print_it = print_it_normal; |
bd5635a1 RP |
1066 | return bs; |
1067 | } | |
fa99ebe1 | 1068 | \f |
999dd04b | 1069 | |
bd5635a1 | 1070 | |
8af68e4e JK |
1071 | /* Possible return values for watchpoint_check (this can't be an enum |
1072 | because of check_errors). */ | |
999dd04b JL |
1073 | /* The watchpoint has been deleted. */ |
1074 | #define WP_DELETED 1 | |
8af68e4e JK |
1075 | /* The value has changed. */ |
1076 | #define WP_VALUE_CHANGED 2 | |
1077 | /* The value has not changed. */ | |
1078 | #define WP_VALUE_NOT_CHANGED 3 | |
1079 | ||
1080 | /* Check watchpoint condition. */ | |
1081 | static int | |
1082 | watchpoint_check (p) | |
fe675038 | 1083 | char *p; |
8af68e4e JK |
1084 | { |
1085 | bpstat bs = (bpstat) p; | |
11054881 | 1086 | struct breakpoint *b; |
999dd04b JL |
1087 | FRAME saved_frame, fr; |
1088 | int within_current_scope, saved_level; | |
1089 | ||
1090 | /* Save the current frame and level so we can restore it after | |
1091 | evaluating the watchpoint expression on its own frame. */ | |
1092 | saved_frame = selected_frame; | |
1093 | saved_level = selected_frame_level; | |
8af68e4e | 1094 | |
fa99ebe1 | 1095 | if (bs->breakpoint_at->exp_valid_block == NULL) |
8af68e4e | 1096 | within_current_scope = 1; |
fa99ebe1 JK |
1097 | else |
1098 | { | |
999dd04b JL |
1099 | fr = find_frame_addr_in_frame_chain (bs->breakpoint_at->watchpoint_frame); |
1100 | within_current_scope = (fr != NULL); | |
fa99ebe1 JK |
1101 | if (within_current_scope) |
1102 | /* If we end up stopping, the current frame will get selected | |
1103 | in normal_stop. So this call to select_frame won't affect | |
1104 | the user. */ | |
1105 | select_frame (fr, -1); | |
1106 | } | |
1107 | ||
8af68e4e JK |
1108 | if (within_current_scope) |
1109 | { | |
1110 | /* We use value_{,free_to_}mark because it could be a | |
1111 | *long* time before we return to the command level and | |
cef4c2e7 PS |
1112 | call free_all_values. We can't call free_all_values because |
1113 | we might be in the middle of evaluating a function call. */ | |
8af68e4e | 1114 | |
82a2edfb JK |
1115 | value_ptr mark = value_mark (); |
1116 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
8af68e4e JK |
1117 | if (!value_equal (bs->breakpoint_at->val, new_val)) |
1118 | { | |
1119 | release_value (new_val); | |
1120 | value_free_to_mark (mark); | |
1121 | bs->old_val = bs->breakpoint_at->val; | |
1122 | bs->breakpoint_at->val = new_val; | |
1123 | /* We will stop here */ | |
999dd04b | 1124 | select_frame (saved_frame, saved_level); |
8af68e4e JK |
1125 | return WP_VALUE_CHANGED; |
1126 | } | |
1127 | else | |
1128 | { | |
1129 | /* Nothing changed, don't do anything. */ | |
1130 | value_free_to_mark (mark); | |
1131 | /* We won't stop here */ | |
999dd04b | 1132 | select_frame (saved_frame, saved_level); |
8af68e4e JK |
1133 | return WP_VALUE_NOT_CHANGED; |
1134 | } | |
1135 | } | |
1136 | else | |
1137 | { | |
1138 | /* This seems like the only logical thing to do because | |
1139 | if we temporarily ignored the watchpoint, then when | |
1140 | we reenter the block in which it is valid it contains | |
1141 | garbage (in the case of a function, it may have two | |
1142 | garbage values, one before and one after the prologue). | |
1143 | So we can't even detect the first assignment to it and | |
1144 | watch after that (since the garbage may or may not equal | |
1145 | the first value assigned). */ | |
8af68e4e | 1146 | printf_filtered ("\ |
999dd04b | 1147 | Watchpoint %d deleted because the program has left the block in\n\ |
8af68e4e | 1148 | which its expression is valid.\n", bs->breakpoint_at->number); |
999dd04b JL |
1149 | if (bs->breakpoint_at->related_breakpoint) |
1150 | delete_breakpoint (bs->breakpoint_at->related_breakpoint); | |
1151 | delete_breakpoint (bs->breakpoint_at); | |
1152 | ||
1153 | select_frame (saved_frame, saved_level); | |
1154 | return WP_DELETED; | |
8af68e4e JK |
1155 | } |
1156 | } | |
1157 | ||
1158 | /* This is used when everything which needs to be printed has | |
1159 | already been printed. But we still want to print the frame. */ | |
1160 | static int | |
cabd4da6 | 1161 | print_it_done (bs) |
8af68e4e JK |
1162 | bpstat bs; |
1163 | { | |
1164 | return 0; | |
1165 | } | |
1166 | ||
cabd4da6 JK |
1167 | /* This is used when nothing should be printed for this bpstat entry. */ |
1168 | ||
1169 | static int | |
1170 | print_it_noop (bs) | |
1171 | bpstat bs; | |
1172 | { | |
1173 | return -1; | |
1174 | } | |
1175 | ||
cb6b0202 JK |
1176 | /* Get a bpstat associated with having just stopped at address *PC |
1177 | and frame address FRAME_ADDRESS. Update *PC to point at the | |
1178 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
1179 | if this is known to not be a real breakpoint (it could still be a | |
1180 | watchpoint, though). */ | |
1181 | ||
bd5635a1 RP |
1182 | /* Determine whether we stopped at a breakpoint, etc, or whether we |
1183 | don't understand this stop. Result is a chain of bpstat's such that: | |
1184 | ||
1185 | if we don't understand the stop, the result is a null pointer. | |
1186 | ||
cb6b0202 | 1187 | if we understand why we stopped, the result is not null. |
bd5635a1 RP |
1188 | |
1189 | Each element of the chain refers to a particular breakpoint or | |
1190 | watchpoint at which we have stopped. (We may have stopped for | |
2d313932 | 1191 | several reasons concurrently.) |
bd5635a1 RP |
1192 | |
1193 | Each element of the chain has valid next, breakpoint_at, | |
1194 | commands, FIXME??? fields. | |
1195 | ||
1196 | */ | |
1197 | ||
bd5635a1 | 1198 | bpstat |
cb6b0202 | 1199 | bpstat_stop_status (pc, frame_address, not_a_breakpoint) |
bd5635a1 RP |
1200 | CORE_ADDR *pc; |
1201 | FRAME_ADDR frame_address; | |
cb6b0202 | 1202 | int not_a_breakpoint; |
bd5635a1 RP |
1203 | { |
1204 | register struct breakpoint *b; | |
bd5635a1 | 1205 | CORE_ADDR bp_addr; |
bdbd5f50 | 1206 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1207 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
1208 | int real_breakpoint = 0; | |
bdbd5f50 | 1209 | #endif |
bd5635a1 | 1210 | /* Root of the chain of bpstat's */ |
cba0d141 | 1211 | struct bpstat root_bs[1]; |
bd5635a1 RP |
1212 | /* Pointer to the last thing in the chain currently. */ |
1213 | bpstat bs = root_bs; | |
11054881 KH |
1214 | static char message1[] = |
1215 | "Error evaluating expression for watchpoint %d\n"; | |
1216 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 RP |
1217 | |
1218 | /* Get the address where the breakpoint would have been. */ | |
1219 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
1220 | ||
1221 | ALL_BREAKPOINTS (b) | |
1222 | { | |
bd5635a1 RP |
1223 | if (b->enable == disabled) |
1224 | continue; | |
30875e1c | 1225 | |
999dd04b JL |
1226 | if (b->type != bp_watchpoint |
1227 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1228 | && b->type != bp_read_watchpoint |
1229 | && b->type != bp_access_watchpoint | |
1230 | && b->type != bp_hardware_breakpoint | |
999dd04b | 1231 | && b->address != bp_addr) |
bd5635a1 RP |
1232 | continue; |
1233 | ||
11054881 KH |
1234 | #ifndef DECR_PC_AFTER_HW_BREAK |
1235 | #define DECR_PC_AFTER_HW_BREAK 0 | |
1236 | #endif | |
1237 | if (b->type == bp_hardware_breakpoint | |
1238 | && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK)) | |
1239 | continue; | |
1240 | ||
999dd04b JL |
1241 | if (b->type != bp_watchpoint |
1242 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1243 | && b->type != bp_read_watchpoint |
1244 | && b->type != bp_access_watchpoint | |
999dd04b | 1245 | && not_a_breakpoint) |
cb6b0202 JK |
1246 | continue; |
1247 | ||
30875e1c SG |
1248 | /* Come here if it's a watchpoint, or if the break address matches */ |
1249 | ||
bd5635a1 RP |
1250 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ |
1251 | ||
cabd4da6 JK |
1252 | bs->stop = 1; |
1253 | bs->print = 1; | |
bd5635a1 | 1254 | |
11054881 | 1255 | sprintf (message, message1, b->number); |
999dd04b | 1256 | if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) |
bd5635a1 | 1257 | { |
fe675038 JK |
1258 | switch (catch_errors (watchpoint_check, (char *) bs, message, |
1259 | RETURN_MASK_ALL)) | |
bd5635a1 | 1260 | { |
999dd04b | 1261 | case WP_DELETED: |
8af68e4e | 1262 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1263 | bs->print_it = print_it_done; |
8af68e4e JK |
1264 | /* Stop. */ |
1265 | break; | |
1266 | case WP_VALUE_CHANGED: | |
1267 | /* Stop. */ | |
1268 | break; | |
1269 | case WP_VALUE_NOT_CHANGED: | |
1270 | /* Don't stop. */ | |
cabd4da6 JK |
1271 | bs->print_it = print_it_noop; |
1272 | bs->stop = 0; | |
bd5635a1 | 1273 | continue; |
8af68e4e JK |
1274 | default: |
1275 | /* Can't happen. */ | |
1276 | /* FALLTHROUGH */ | |
1277 | case 0: | |
1278 | /* Error from catch_errors. */ | |
999dd04b JL |
1279 | printf_filtered ("Watchpoint %d deleted.\n", b->number); |
1280 | if (b->related_breakpoint) | |
1281 | delete_breakpoint (b->related_breakpoint); | |
1282 | delete_breakpoint (b); | |
8af68e4e | 1283 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1284 | bs->print_it = print_it_done; |
999dd04b | 1285 | |
8af68e4e JK |
1286 | /* Stop. */ |
1287 | break; | |
bd5635a1 RP |
1288 | } |
1289 | } | |
11054881 KH |
1290 | else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) |
1291 | { | |
1292 | CORE_ADDR addr; | |
1293 | value_ptr v; | |
1294 | int found = 0; | |
1295 | ||
1296 | addr = target_stopped_data_address(); | |
1297 | if (addr == 0) continue; | |
1298 | for (v = b->val_chain; v; v = v->next) | |
1299 | { | |
1300 | if (v->lval == lval_memory) | |
1301 | { | |
1302 | CORE_ADDR vaddr; | |
1303 | ||
1304 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1305 | if (addr == vaddr) | |
1306 | found = 1; | |
1307 | } | |
1308 | } | |
1309 | if (found) | |
1310 | switch (catch_errors (watchpoint_check, (char *) bs, message, | |
1311 | RETURN_MASK_ALL)) | |
1312 | { | |
1313 | case WP_DELETED: | |
1314 | /* We've already printed what needs to be printed. */ | |
1315 | bs->print_it = print_it_done; | |
1316 | /* Stop. */ | |
1317 | break; | |
1318 | case WP_VALUE_CHANGED: | |
1319 | case WP_VALUE_NOT_CHANGED: | |
1320 | /* Stop. */ | |
1321 | break; | |
1322 | default: | |
1323 | /* Can't happen. */ | |
1324 | case 0: | |
1325 | /* Error from catch_errors. */ | |
1326 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
1327 | if (b->related_breakpoint) | |
1328 | delete_breakpoint (b->related_breakpoint); | |
1329 | delete_breakpoint (b); | |
1330 | /* We've already printed what needs to be printed. */ | |
1331 | bs->print_it = print_it_done; | |
1332 | break; | |
1333 | } | |
1334 | } | |
bdbd5f50 | 1335 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1336 | else |
1337 | real_breakpoint = 1; | |
bdbd5f50 | 1338 | #endif |
bd5635a1 RP |
1339 | |
1340 | if (b->frame && b->frame != frame_address) | |
cabd4da6 | 1341 | bs->stop = 0; |
bd5635a1 RP |
1342 | else |
1343 | { | |
fee933f1 | 1344 | int value_is_zero = 0; |
bd5635a1 RP |
1345 | |
1346 | if (b->cond) | |
1347 | { | |
1348 | /* Need to select the frame, with all that implies | |
1349 | so that the conditions will have the right context. */ | |
1350 | select_frame (get_current_frame (), 0); | |
bdbd5f50 JG |
1351 | value_is_zero |
1352 | = catch_errors (breakpoint_cond_eval, (char *)(b->cond), | |
fe675038 JK |
1353 | "Error in testing breakpoint condition:\n", |
1354 | RETURN_MASK_ALL); | |
06b6c733 | 1355 | /* FIXME-someday, should give breakpoint # */ |
bd5635a1 RP |
1356 | free_all_values (); |
1357 | } | |
bdbd5f50 | 1358 | if (b->cond && value_is_zero) |
bd5635a1 | 1359 | { |
cabd4da6 | 1360 | bs->stop = 0; |
bd5635a1 RP |
1361 | } |
1362 | else if (b->ignore_count > 0) | |
1363 | { | |
1364 | b->ignore_count--; | |
cabd4da6 | 1365 | bs->stop = 0; |
bd5635a1 RP |
1366 | } |
1367 | else | |
1368 | { | |
1369 | /* We will stop here */ | |
30875e1c | 1370 | if (b->disposition == disable) |
bd5635a1 RP |
1371 | b->enable = disabled; |
1372 | bs->commands = b->commands; | |
1373 | if (b->silent) | |
cabd4da6 | 1374 | bs->print = 0; |
2d313932 | 1375 | if (bs->commands && STREQ ("silent", bs->commands->line)) |
bd5635a1 RP |
1376 | { |
1377 | bs->commands = bs->commands->next; | |
cabd4da6 | 1378 | bs->print = 0; |
bd5635a1 RP |
1379 | } |
1380 | } | |
1381 | } | |
cabd4da6 JK |
1382 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
1383 | if (bs->stop == 0 || bs->print == 0) | |
1384 | bs->print_it = print_it_noop; | |
bd5635a1 RP |
1385 | } |
1386 | ||
1387 | bs->next = NULL; /* Terminate the chain */ | |
1388 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
cabd4da6 | 1389 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1390 | if (bs) |
1391 | { | |
bd5635a1 RP |
1392 | if (real_breakpoint) |
1393 | { | |
1394 | *pc = bp_addr; | |
1395 | #if defined (SHIFT_INST_REGS) | |
817ac7f8 | 1396 | SHIFT_INST_REGS(); |
bd5635a1 RP |
1397 | #else /* No SHIFT_INST_REGS. */ |
1398 | write_pc (bp_addr); | |
1399 | #endif /* No SHIFT_INST_REGS. */ | |
1400 | } | |
bd5635a1 | 1401 | } |
cabd4da6 | 1402 | #endif /* DECR_PC_AFTER_BREAK != 0. */ |
999dd04b JL |
1403 | |
1404 | /* The value of a hardware watchpoint hasn't changed, but the | |
1405 | intermediate memory locations we are watching may have. */ | |
11054881 KH |
1406 | if (bs && ! bs->stop && |
1407 | (bs->breakpoint_at->type == bp_hardware_watchpoint || | |
1408 | bs->breakpoint_at->type == bp_read_watchpoint || | |
1409 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
999dd04b JL |
1410 | { |
1411 | remove_breakpoints (); | |
1412 | insert_breakpoints (); | |
1413 | } | |
bd5635a1 RP |
1414 | return bs; |
1415 | } | |
cabd4da6 JK |
1416 | \f |
1417 | /* Tell what to do about this bpstat. */ | |
fe675038 | 1418 | struct bpstat_what |
cabd4da6 JK |
1419 | bpstat_what (bs) |
1420 | bpstat bs; | |
1421 | { | |
1422 | /* Classify each bpstat as one of the following. */ | |
1423 | enum class { | |
fe675038 JK |
1424 | /* This bpstat element has no effect on the main_action. */ |
1425 | no_effect = 0, | |
cabd4da6 JK |
1426 | |
1427 | /* There was a watchpoint, stop but don't print. */ | |
1428 | wp_silent, | |
1429 | ||
1430 | /* There was a watchpoint, stop and print. */ | |
1431 | wp_noisy, | |
1432 | ||
1433 | /* There was a breakpoint but we're not stopping. */ | |
1434 | bp_nostop, | |
1435 | ||
1436 | /* There was a breakpoint, stop but don't print. */ | |
1437 | bp_silent, | |
1438 | ||
1439 | /* There was a breakpoint, stop and print. */ | |
1440 | bp_noisy, | |
1441 | ||
1442 | /* We hit the longjmp breakpoint. */ | |
1443 | long_jump, | |
1444 | ||
1445 | /* We hit the longjmp_resume breakpoint. */ | |
1446 | long_resume, | |
1447 | ||
d7e7e851 JK |
1448 | /* We hit the step_resume breakpoint. */ |
1449 | step_resume, | |
1450 | ||
bcc37718 JK |
1451 | /* We hit the through_sigtramp breakpoint. */ |
1452 | through_sig, | |
1453 | ||
cabd4da6 JK |
1454 | /* This is just used to count how many enums there are. */ |
1455 | class_last | |
1456 | }; | |
1457 | ||
1458 | /* Here is the table which drives this routine. So that we can | |
1459 | format it pretty, we define some abbreviations for the | |
1460 | enum bpstat_what codes. */ | |
1461 | #define keep_c BPSTAT_WHAT_KEEP_CHECKING | |
1462 | #define stop_s BPSTAT_WHAT_STOP_SILENT | |
1463 | #define stop_n BPSTAT_WHAT_STOP_NOISY | |
1464 | #define single BPSTAT_WHAT_SINGLE | |
1465 | #define setlr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
1466 | #define clrlr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
1467 | #define clrlrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
d7e7e851 | 1468 | #define sr BPSTAT_WHAT_STEP_RESUME |
bcc37718 | 1469 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP |
d7e7e851 | 1470 | |
cabd4da6 JK |
1471 | /* "Can't happen." Might want to print an error message. |
1472 | abort() is not out of the question, but chances are GDB is just | |
1473 | a bit confused, not unusable. */ | |
1474 | #define err BPSTAT_WHAT_STOP_NOISY | |
1475 | ||
1476 | /* Given an old action and a class, come up with a new action. */ | |
84d59861 JK |
1477 | /* One interesting property of this table is that wp_silent is the same |
1478 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
1479 | after stopping, the check for whether to step over a breakpoint | |
1480 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
1481 | reference to how we stopped. We retain separate wp_silent and bp_silent | |
1482 | codes in case we want to change that someday. */ | |
d7e7e851 JK |
1483 | |
1484 | /* step_resume entries: a step resume breakpoint overrides another | |
1485 | breakpoint of signal handling (see comment in wait_for_inferior | |
1486 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
bcc37718 JK |
1487 | /* We handle the through_sigtramp_breakpoint the same way; having both |
1488 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
d7e7e851 | 1489 | |
fe675038 | 1490 | static const enum bpstat_what_main_action |
cabd4da6 JK |
1491 | table[(int)class_last][(int)BPSTAT_WHAT_LAST] = |
1492 | { | |
1493 | /* old action */ | |
bcc37718 JK |
1494 | /* keep_c stop_s stop_n single setlr clrlr clrlrs sr ts |
1495 | */ | |
1496 | /*no_effect*/ {keep_c,stop_s,stop_n,single, setlr , clrlr , clrlrs, sr, ts}, | |
1497 | /*wp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts}, | |
1498 | /*wp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts}, | |
1499 | /*bp_nostop*/ {single,stop_s,stop_n,single, setlr , clrlrs, clrlrs, sr, ts}, | |
1500 | /*bp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts}, | |
1501 | /*bp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts}, | |
1502 | /*long_jump*/ {setlr ,stop_s,stop_n,setlr , err , err , err , sr, ts}, | |
1503 | /*long_resume*/ {clrlr ,stop_s,stop_n,clrlrs, err , err , err , sr, ts}, | |
1504 | /*step_resume*/ {sr ,sr ,sr ,sr , sr , sr , sr , sr, ts}, | |
1505 | /*through_sig*/ {ts ,ts ,ts ,ts , ts , ts , ts , ts, ts} | |
cabd4da6 JK |
1506 | }; |
1507 | #undef keep_c | |
1508 | #undef stop_s | |
1509 | #undef stop_n | |
1510 | #undef single | |
1511 | #undef setlr | |
1512 | #undef clrlr | |
1513 | #undef clrlrs | |
1514 | #undef err | |
bcc37718 JK |
1515 | #undef sr |
1516 | #undef ts | |
fe675038 | 1517 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
84d59861 | 1518 | struct bpstat_what retval; |
cabd4da6 | 1519 | |
cef4c2e7 | 1520 | retval.call_dummy = 0; |
cabd4da6 JK |
1521 | for (; bs != NULL; bs = bs->next) |
1522 | { | |
fee933f1 | 1523 | enum class bs_class = no_effect; |
cabd4da6 JK |
1524 | if (bs->breakpoint_at == NULL) |
1525 | /* I suspect this can happen if it was a momentary breakpoint | |
1526 | which has since been deleted. */ | |
1527 | continue; | |
1528 | switch (bs->breakpoint_at->type) | |
1529 | { | |
1530 | case bp_breakpoint: | |
11054881 | 1531 | case bp_hardware_breakpoint: |
cabd4da6 JK |
1532 | case bp_until: |
1533 | case bp_finish: | |
1534 | if (bs->stop) | |
1535 | { | |
1536 | if (bs->print) | |
1537 | bs_class = bp_noisy; | |
1538 | else | |
1539 | bs_class = bp_silent; | |
1540 | } | |
1541 | else | |
1542 | bs_class = bp_nostop; | |
1543 | break; | |
1544 | case bp_watchpoint: | |
999dd04b | 1545 | case bp_hardware_watchpoint: |
11054881 KH |
1546 | case bp_read_watchpoint: |
1547 | case bp_access_watchpoint: | |
cabd4da6 JK |
1548 | if (bs->stop) |
1549 | { | |
1550 | if (bs->print) | |
1551 | bs_class = wp_noisy; | |
1552 | else | |
1553 | bs_class = wp_silent; | |
1554 | } | |
1555 | else | |
fe675038 JK |
1556 | /* There was a watchpoint, but we're not stopping. This requires |
1557 | no further action. */ | |
1558 | bs_class = no_effect; | |
cabd4da6 JK |
1559 | break; |
1560 | case bp_longjmp: | |
1561 | bs_class = long_jump; | |
1562 | break; | |
1563 | case bp_longjmp_resume: | |
1564 | bs_class = long_resume; | |
1565 | break; | |
fe675038 | 1566 | case bp_step_resume: |
fe675038 JK |
1567 | if (bs->stop) |
1568 | { | |
d7e7e851 | 1569 | bs_class = step_resume; |
fe675038 JK |
1570 | } |
1571 | else | |
1572 | /* It is for the wrong frame. */ | |
1573 | bs_class = bp_nostop; | |
bcc37718 JK |
1574 | break; |
1575 | case bp_through_sigtramp: | |
1576 | bs_class = through_sig; | |
fe675038 | 1577 | break; |
999dd04b JL |
1578 | case bp_watchpoint_scope: |
1579 | bs_class = bp_nostop; | |
1580 | break; | |
1581 | ||
84d59861 JK |
1582 | case bp_call_dummy: |
1583 | /* Make sure the action is stop (silent or noisy), so infrun.c | |
1584 | pops the dummy frame. */ | |
1585 | bs_class = bp_silent; | |
1586 | retval.call_dummy = 1; | |
bb7b3800 | 1587 | break; |
cabd4da6 JK |
1588 | } |
1589 | current_action = table[(int)bs_class][(int)current_action]; | |
1590 | } | |
84d59861 JK |
1591 | retval.main_action = current_action; |
1592 | return retval; | |
cabd4da6 | 1593 | } |
bd5635a1 | 1594 | |
30875e1c SG |
1595 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
1596 | without hardware support). This isn't related to a specific bpstat, | |
1597 | just to things like whether watchpoints are set. */ | |
1598 | ||
bd5635a1 RP |
1599 | int |
1600 | bpstat_should_step () | |
1601 | { | |
1602 | struct breakpoint *b; | |
1603 | ALL_BREAKPOINTS (b) | |
30875e1c | 1604 | if (b->enable == enabled && b->type == bp_watchpoint) |
bd5635a1 RP |
1605 | return 1; |
1606 | return 0; | |
1607 | } | |
1608 | \f | |
1609 | /* Print information on breakpoint number BNUM, or -1 if all. | |
1610 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
1611 | is nonzero, process only watchpoints. */ | |
1612 | ||
1613 | static void | |
c8950965 | 1614 | breakpoint_1 (bnum, allflag) |
bd5635a1 | 1615 | int bnum; |
80ba48f5 | 1616 | int allflag; |
bd5635a1 RP |
1617 | { |
1618 | register struct breakpoint *b; | |
1619 | register struct command_line *l; | |
1620 | register struct symbol *sym; | |
1621 | CORE_ADDR last_addr = (CORE_ADDR)-1; | |
30875e1c | 1622 | int found_a_breakpoint = 0; |
11054881 KH |
1623 | static char *bptypes[] = {"breakpoint", "hw breakpoint", |
1624 | "until", "finish", "watchpoint", | |
1625 | "hw watchpoint", "read watchpoint", | |
1626 | "acc watchpoint", "longjmp", | |
999dd04b JL |
1627 | "longjmp resume", "step resume", |
1628 | "watchpoint scope", "call dummy" }; | |
80ba48f5 | 1629 | static char *bpdisps[] = {"del", "dis", "keep"}; |
30875e1c | 1630 | static char bpenables[] = "ny"; |
0a62ff36 | 1631 | char wrap_indent[80]; |
30875e1c | 1632 | |
bd5635a1 | 1633 | ALL_BREAKPOINTS (b) |
30875e1c SG |
1634 | if (bnum == -1 |
1635 | || bnum == b->number) | |
bd5635a1 | 1636 | { |
80ba48f5 SG |
1637 | /* We only print out user settable breakpoints unless the allflag is set. */ |
1638 | if (!allflag | |
1639 | && b->type != bp_breakpoint | |
11054881 | 1640 | && b->type != bp_hardware_breakpoint |
999dd04b | 1641 | && b->type != bp_watchpoint |
11054881 KH |
1642 | && b->type != bp_read_watchpoint |
1643 | && b->type != bp_access_watchpoint | |
999dd04b | 1644 | && b->type != bp_hardware_watchpoint) |
80ba48f5 SG |
1645 | continue; |
1646 | ||
30875e1c | 1647 | if (!found_a_breakpoint++) |
47ebe8fd | 1648 | { |
f2d9c058 KH |
1649 | annotate_breakpoints_headers (); |
1650 | ||
1651 | annotate_field (0); | |
1652 | printf_filtered ("Num "); | |
1653 | annotate_field (1); | |
1654 | printf_filtered ("Type "); | |
1655 | annotate_field (2); | |
1656 | printf_filtered ("Disp "); | |
1657 | annotate_field (3); | |
1658 | printf_filtered ("Enb "); | |
1659 | if (addressprint) | |
1660 | { | |
1661 | annotate_field (4); | |
1662 | printf_filtered ("Address "); | |
1663 | } | |
1664 | annotate_field (5); | |
1665 | printf_filtered ("What\n"); | |
1666 | ||
1667 | annotate_breakpoints_table (); | |
1668 | } | |
1669 | ||
1670 | annotate_record (); | |
1671 | annotate_field (0); | |
1672 | printf_filtered ("%-3d ", b->number); | |
1673 | annotate_field (1); | |
1674 | printf_filtered ("%-14s ", bptypes[(int)b->type]); | |
1675 | annotate_field (2); | |
1676 | printf_filtered ("%-4s ", bpdisps[(int)b->disposition]); | |
1677 | annotate_field (3); | |
47ebe8fd JK |
1678 | printf_filtered ("%-3c ", bpenables[(int)b->enable]); |
1679 | ||
0a62ff36 JK |
1680 | strcpy (wrap_indent, " "); |
1681 | if (addressprint) | |
1682 | strcat (wrap_indent, " "); | |
30875e1c | 1683 | switch (b->type) |
bd5635a1 | 1684 | { |
30875e1c | 1685 | case bp_watchpoint: |
999dd04b | 1686 | case bp_hardware_watchpoint: |
11054881 KH |
1687 | case bp_read_watchpoint: |
1688 | case bp_access_watchpoint: | |
47ebe8fd JK |
1689 | /* Field 4, the address, is omitted (which makes the columns |
1690 | not line up too nicely with the headers, but the effect | |
1691 | is relatively readable). */ | |
11054881 KH |
1692 | if (annotation_level > 1) |
1693 | printf_filtered ("\n\032\032field 5\n"); | |
199b2450 | 1694 | print_expression (b->exp, gdb_stdout); |
30875e1c | 1695 | break; |
84d59861 | 1696 | |
30875e1c | 1697 | case bp_breakpoint: |
11054881 | 1698 | case bp_hardware_breakpoint: |
80ba48f5 SG |
1699 | case bp_until: |
1700 | case bp_finish: | |
1701 | case bp_longjmp: | |
1702 | case bp_longjmp_resume: | |
84d59861 | 1703 | case bp_step_resume: |
bcc37718 | 1704 | case bp_through_sigtramp: |
999dd04b | 1705 | case bp_watchpoint_scope: |
bb7b3800 | 1706 | case bp_call_dummy: |
bd5635a1 | 1707 | if (addressprint) |
47ebe8fd | 1708 | { |
f2d9c058 | 1709 | annotate_field (4); |
47ebe8fd JK |
1710 | /* FIXME-32x64: need a print_address_numeric with |
1711 | field width */ | |
1712 | printf_filtered | |
1713 | ("%s ", | |
1714 | local_hex_string_custom | |
1715 | ((unsigned long) b->address, "08l")); | |
1716 | } | |
1717 | ||
f2d9c058 | 1718 | annotate_field (5); |
bd5635a1 RP |
1719 | |
1720 | last_addr = b->address; | |
d889f6b7 | 1721 | if (b->source_file) |
bd5635a1 RP |
1722 | { |
1723 | sym = find_pc_function (b->address); | |
1724 | if (sym) | |
1725 | { | |
199b2450 TL |
1726 | fputs_filtered ("in ", gdb_stdout); |
1727 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
0a62ff36 | 1728 | wrap_here (wrap_indent); |
199b2450 | 1729 | fputs_filtered (" at ", gdb_stdout); |
bd5635a1 | 1730 | } |
199b2450 | 1731 | fputs_filtered (b->source_file, gdb_stdout); |
bd5635a1 RP |
1732 | printf_filtered (":%d", b->line_number); |
1733 | } | |
1734 | else | |
199b2450 | 1735 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); |
fee933f1 | 1736 | break; |
bd5635a1 RP |
1737 | } |
1738 | ||
1739 | printf_filtered ("\n"); | |
1740 | ||
1741 | if (b->frame) | |
833e0d94 | 1742 | { |
f2d9c058 | 1743 | annotate_field (6); |
47ebe8fd | 1744 | |
833e0d94 | 1745 | printf_filtered ("\tstop only in stack frame at "); |
d24c0599 | 1746 | print_address_numeric (b->frame, 1, gdb_stdout); |
833e0d94 | 1747 | printf_filtered ("\n"); |
bcc37718 | 1748 | } |
47ebe8fd | 1749 | |
bd5635a1 RP |
1750 | if (b->cond) |
1751 | { | |
f2d9c058 | 1752 | annotate_field (7); |
47ebe8fd | 1753 | |
bd5635a1 | 1754 | printf_filtered ("\tstop only if "); |
199b2450 | 1755 | print_expression (b->cond, gdb_stdout); |
bd5635a1 RP |
1756 | printf_filtered ("\n"); |
1757 | } | |
47ebe8fd | 1758 | |
bd5635a1 | 1759 | if (b->ignore_count) |
47ebe8fd | 1760 | { |
f2d9c058 | 1761 | annotate_field (8); |
47ebe8fd JK |
1762 | |
1763 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
1764 | } | |
1765 | ||
bd5635a1 | 1766 | if ((l = b->commands)) |
47ebe8fd | 1767 | { |
f2d9c058 | 1768 | annotate_field (9); |
47ebe8fd JK |
1769 | |
1770 | while (l) | |
1771 | { | |
1772 | fputs_filtered ("\t", gdb_stdout); | |
1773 | fputs_filtered (l->line, gdb_stdout); | |
1774 | fputs_filtered ("\n", gdb_stdout); | |
1775 | l = l->next; | |
1776 | } | |
1777 | } | |
bd5635a1 RP |
1778 | } |
1779 | ||
fee933f1 RP |
1780 | if (!found_a_breakpoint) |
1781 | { | |
1782 | if (bnum == -1) | |
1783 | printf_filtered ("No breakpoints or watchpoints.\n"); | |
1784 | else | |
1785 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); | |
1786 | } | |
30875e1c SG |
1787 | else |
1788 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
1789 | that a comparison of an unsigned with -1 is always false. */ | |
1790 | if (last_addr != (CORE_ADDR)-1) | |
1791 | set_next_address (last_addr); | |
47ebe8fd | 1792 | |
f2d9c058 | 1793 | annotate_breakpoints_table_end (); |
bd5635a1 RP |
1794 | } |
1795 | ||
bdbd5f50 | 1796 | /* ARGSUSED */ |
bd5635a1 RP |
1797 | static void |
1798 | breakpoints_info (bnum_exp, from_tty) | |
1799 | char *bnum_exp; | |
1800 | int from_tty; | |
1801 | { | |
1802 | int bnum = -1; | |
1803 | ||
1804 | if (bnum_exp) | |
1805 | bnum = parse_and_eval_address (bnum_exp); | |
1806 | ||
c8950965 | 1807 | breakpoint_1 (bnum, 0); |
80ba48f5 SG |
1808 | } |
1809 | ||
9b280a7f JG |
1810 | #if MAINTENANCE_CMDS |
1811 | ||
80ba48f5 SG |
1812 | /* ARGSUSED */ |
1813 | static void | |
9b280a7f | 1814 | maintenance_info_breakpoints (bnum_exp, from_tty) |
80ba48f5 SG |
1815 | char *bnum_exp; |
1816 | int from_tty; | |
1817 | { | |
1818 | int bnum = -1; | |
1819 | ||
1820 | if (bnum_exp) | |
1821 | bnum = parse_and_eval_address (bnum_exp); | |
1822 | ||
c8950965 | 1823 | breakpoint_1 (bnum, 1); |
bd5635a1 RP |
1824 | } |
1825 | ||
9b280a7f JG |
1826 | #endif |
1827 | ||
bd5635a1 RP |
1828 | /* Print a message describing any breakpoints set at PC. */ |
1829 | ||
1830 | static void | |
1831 | describe_other_breakpoints (pc) | |
1832 | register CORE_ADDR pc; | |
1833 | { | |
1834 | register int others = 0; | |
1835 | register struct breakpoint *b; | |
1836 | ||
1837 | ALL_BREAKPOINTS (b) | |
1838 | if (b->address == pc) | |
1839 | others++; | |
1840 | if (others > 0) | |
1841 | { | |
833e0d94 | 1842 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); |
bd5635a1 RP |
1843 | ALL_BREAKPOINTS (b) |
1844 | if (b->address == pc) | |
1845 | { | |
1846 | others--; | |
833e0d94 JK |
1847 | printf_filtered |
1848 | ("%d%s%s ", | |
1849 | b->number, | |
1850 | (b->enable == disabled) ? " (disabled)" : "", | |
1851 | (others > 1) ? "," : ((others == 1) ? " and" : "")); | |
bd5635a1 | 1852 | } |
833e0d94 | 1853 | printf_filtered ("also set at pc "); |
d24c0599 | 1854 | print_address_numeric (pc, 1, gdb_stdout); |
833e0d94 | 1855 | printf_filtered (".\n"); |
bd5635a1 RP |
1856 | } |
1857 | } | |
1858 | \f | |
1859 | /* Set the default place to put a breakpoint | |
1860 | for the `break' command with no arguments. */ | |
1861 | ||
1862 | void | |
1863 | set_default_breakpoint (valid, addr, symtab, line) | |
1864 | int valid; | |
1865 | CORE_ADDR addr; | |
1866 | struct symtab *symtab; | |
1867 | int line; | |
1868 | { | |
1869 | default_breakpoint_valid = valid; | |
1870 | default_breakpoint_address = addr; | |
1871 | default_breakpoint_symtab = symtab; | |
1872 | default_breakpoint_line = line; | |
1873 | } | |
1874 | ||
1875 | /* Rescan breakpoints at address ADDRESS, | |
1876 | marking the first one as "first" and any others as "duplicates". | |
1877 | This is so that the bpt instruction is only inserted once. */ | |
1878 | ||
1879 | static void | |
1880 | check_duplicates (address) | |
1881 | CORE_ADDR address; | |
1882 | { | |
1883 | register struct breakpoint *b; | |
1884 | register int count = 0; | |
1885 | ||
30875e1c | 1886 | if (address == 0) /* Watchpoints are uninteresting */ |
f266e564 JK |
1887 | return; |
1888 | ||
bd5635a1 RP |
1889 | ALL_BREAKPOINTS (b) |
1890 | if (b->enable != disabled && b->address == address) | |
1891 | { | |
1892 | count++; | |
1893 | b->duplicate = count > 1; | |
1894 | } | |
1895 | } | |
1896 | ||
1897 | /* Low level routine to set a breakpoint. | |
1898 | Takes as args the three things that every breakpoint must have. | |
1899 | Returns the breakpoint object so caller can set other things. | |
1900 | Does not set the breakpoint number! | |
f266e564 JK |
1901 | Does not print anything. |
1902 | ||
1903 | ==> This routine should not be called if there is a chance of later | |
1904 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
1905 | your arguments BEFORE calling this routine! */ | |
bd5635a1 RP |
1906 | |
1907 | static struct breakpoint * | |
1908 | set_raw_breakpoint (sal) | |
1909 | struct symtab_and_line sal; | |
1910 | { | |
1911 | register struct breakpoint *b, *b1; | |
1912 | ||
1913 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4ed3a9ea | 1914 | memset (b, 0, sizeof (*b)); |
bd5635a1 | 1915 | b->address = sal.pc; |
d889f6b7 JK |
1916 | if (sal.symtab == NULL) |
1917 | b->source_file = NULL; | |
1918 | else | |
1919 | b->source_file = savestring (sal.symtab->filename, | |
1920 | strlen (sal.symtab->filename)); | |
199b2450 | 1921 | b->thread = -1; |
bd5635a1 RP |
1922 | b->line_number = sal.line; |
1923 | b->enable = enabled; | |
1924 | b->next = 0; | |
1925 | b->silent = 0; | |
1926 | b->ignore_count = 0; | |
1927 | b->commands = NULL; | |
30875e1c | 1928 | b->frame = 0; |
bd5635a1 RP |
1929 | |
1930 | /* Add this breakpoint to the end of the chain | |
1931 | so that a list of breakpoints will come out in order | |
1932 | of increasing numbers. */ | |
1933 | ||
1934 | b1 = breakpoint_chain; | |
1935 | if (b1 == 0) | |
1936 | breakpoint_chain = b; | |
1937 | else | |
1938 | { | |
1939 | while (b1->next) | |
1940 | b1 = b1->next; | |
1941 | b1->next = b; | |
1942 | } | |
1943 | ||
1944 | check_duplicates (sal.pc); | |
6c803036 | 1945 | breakpoints_changed (); |
bd5635a1 RP |
1946 | |
1947 | return b; | |
1948 | } | |
1949 | ||
30875e1c | 1950 | static void |
80ba48f5 | 1951 | create_longjmp_breakpoint(func_name) |
30875e1c | 1952 | char *func_name; |
30875e1c | 1953 | { |
30875e1c SG |
1954 | struct symtab_and_line sal; |
1955 | struct breakpoint *b; | |
80ba48f5 | 1956 | static int internal_breakpoint_number = -1; |
30875e1c | 1957 | |
30875e1c SG |
1958 | if (func_name != NULL) |
1959 | { | |
1960 | struct minimal_symbol *m; | |
1961 | ||
1962 | m = lookup_minimal_symbol(func_name, (struct objfile *)NULL); | |
1963 | if (m) | |
2d313932 | 1964 | sal.pc = SYMBOL_VALUE_ADDRESS (m); |
30875e1c SG |
1965 | else |
1966 | return; | |
1967 | } | |
1968 | else | |
1969 | sal.pc = 0; | |
1970 | ||
1971 | sal.symtab = NULL; | |
1972 | sal.line = 0; | |
30875e1c | 1973 | |
80ba48f5 | 1974 | b = set_raw_breakpoint(sal); |
30875e1c SG |
1975 | if (!b) return; |
1976 | ||
80ba48f5 | 1977 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; |
30875e1c SG |
1978 | b->disposition = donttouch; |
1979 | b->enable = disabled; | |
1980 | b->silent = 1; | |
80ba48f5 SG |
1981 | if (func_name) |
1982 | b->addr_string = strsave(func_name); | |
1983 | b->number = internal_breakpoint_number--; | |
30875e1c | 1984 | } |
30875e1c SG |
1985 | |
1986 | /* Call this routine when stepping and nexting to enable a breakpoint if we do | |
1987 | a longjmp(). When we hit that breakpoint, call | |
1988 | set_longjmp_resume_breakpoint() to figure out where we are going. */ | |
1989 | ||
1990 | void | |
1991 | enable_longjmp_breakpoint() | |
1992 | { | |
80ba48f5 SG |
1993 | register struct breakpoint *b; |
1994 | ||
1995 | ALL_BREAKPOINTS (b) | |
1996 | if (b->type == bp_longjmp) | |
9b280a7f JG |
1997 | { |
1998 | b->enable = enabled; | |
1999 | check_duplicates (b->address); | |
2000 | } | |
30875e1c SG |
2001 | } |
2002 | ||
2003 | void | |
2004 | disable_longjmp_breakpoint() | |
2005 | { | |
80ba48f5 SG |
2006 | register struct breakpoint *b; |
2007 | ||
2008 | ALL_BREAKPOINTS (b) | |
9b280a7f | 2009 | if ( b->type == bp_longjmp |
80ba48f5 | 2010 | || b->type == bp_longjmp_resume) |
9b280a7f JG |
2011 | { |
2012 | b->enable = disabled; | |
2013 | check_duplicates (b->address); | |
2014 | } | |
30875e1c SG |
2015 | } |
2016 | ||
11054881 KH |
2017 | int |
2018 | hw_breakpoint_used_count() | |
2019 | { | |
2020 | register struct breakpoint *b; | |
2021 | int i = 0; | |
2022 | ||
2023 | ALL_BREAKPOINTS (b) | |
2024 | { | |
2025 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
2026 | i++; | |
2027 | } | |
2028 | ||
2029 | return i; | |
2030 | } | |
2031 | ||
2032 | int | |
2033 | hw_watchpoint_used_count(type, other_type_used) | |
2034 | enum bptype type; | |
2035 | int *other_type_used; | |
2036 | { | |
2037 | register struct breakpoint *b; | |
2038 | int i = 0; | |
2039 | ||
2040 | *other_type_used = 0; | |
2041 | ALL_BREAKPOINTS (b) | |
2042 | { | |
2043 | if (b->enable == enabled) | |
2044 | { | |
2045 | if (b->type == type) i++; | |
2046 | else if ((b->type == bp_hardware_watchpoint || | |
2047 | b->type == bp_read_watchpoint || | |
2048 | b->type == bp_access_watchpoint) | |
2049 | && b->enable == enabled) | |
2050 | *other_type_used = 1; | |
2051 | } | |
2052 | } | |
2053 | return i; | |
2054 | } | |
2055 | ||
30875e1c SG |
2056 | /* Call this after hitting the longjmp() breakpoint. Use this to set a new |
2057 | breakpoint at the target of the jmp_buf. | |
80ba48f5 SG |
2058 | |
2059 | FIXME - This ought to be done by setting a temporary breakpoint that gets | |
2060 | deleted automatically... | |
30875e1c SG |
2061 | */ |
2062 | ||
2063 | void | |
2064 | set_longjmp_resume_breakpoint(pc, frame) | |
2065 | CORE_ADDR pc; | |
2066 | FRAME frame; | |
2067 | { | |
80ba48f5 SG |
2068 | register struct breakpoint *b; |
2069 | ||
2070 | ALL_BREAKPOINTS (b) | |
2071 | if (b->type == bp_longjmp_resume) | |
2072 | { | |
2073 | b->address = pc; | |
2074 | b->enable = enabled; | |
2075 | if (frame != NULL) | |
2076 | b->frame = FRAME_FP(frame); | |
2077 | else | |
2078 | b->frame = 0; | |
9b280a7f | 2079 | check_duplicates (b->address); |
80ba48f5 SG |
2080 | return; |
2081 | } | |
30875e1c SG |
2082 | } |
2083 | ||
bd5635a1 RP |
2084 | /* Set a breakpoint that will evaporate an end of command |
2085 | at address specified by SAL. | |
2086 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
2087 | ||
30875e1c SG |
2088 | struct breakpoint * |
2089 | set_momentary_breakpoint (sal, frame, type) | |
bd5635a1 RP |
2090 | struct symtab_and_line sal; |
2091 | FRAME frame; | |
30875e1c | 2092 | enum bptype type; |
bd5635a1 RP |
2093 | { |
2094 | register struct breakpoint *b; | |
2095 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
2096 | b->type = type; |
2097 | b->enable = enabled; | |
2098 | b->disposition = donttouch; | |
bd5635a1 | 2099 | b->frame = (frame ? FRAME_FP (frame) : 0); |
30875e1c | 2100 | return b; |
bd5635a1 RP |
2101 | } |
2102 | ||
30875e1c | 2103 | #if 0 |
bd5635a1 RP |
2104 | void |
2105 | clear_momentary_breakpoints () | |
2106 | { | |
2107 | register struct breakpoint *b; | |
2108 | ALL_BREAKPOINTS (b) | |
30875e1c | 2109 | if (b->disposition == delete) |
bd5635a1 RP |
2110 | { |
2111 | delete_breakpoint (b); | |
2112 | break; | |
2113 | } | |
2114 | } | |
30875e1c | 2115 | #endif |
bd5635a1 RP |
2116 | \f |
2117 | /* Tell the user we have just set a breakpoint B. */ | |
2118 | static void | |
2119 | mention (b) | |
2120 | struct breakpoint *b; | |
2121 | { | |
30875e1c | 2122 | switch (b->type) |
bd5635a1 | 2123 | { |
30875e1c | 2124 | case bp_watchpoint: |
bd5635a1 | 2125 | printf_filtered ("Watchpoint %d: ", b->number); |
199b2450 | 2126 | print_expression (b->exp, gdb_stdout); |
30875e1c | 2127 | break; |
999dd04b JL |
2128 | case bp_hardware_watchpoint: |
2129 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
2130 | print_expression (b->exp, gdb_stdout); | |
2131 | break; | |
11054881 KH |
2132 | case bp_read_watchpoint: |
2133 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
2134 | print_expression (b->exp, gdb_stdout); | |
2135 | break; | |
2136 | case bp_access_watchpoint: | |
2137 | printf_filtered ("Hardware access(read/write) watchpoint %d: ",b->number); | |
2138 | print_expression (b->exp, gdb_stdout); | |
2139 | break; | |
30875e1c | 2140 | case bp_breakpoint: |
833e0d94 | 2141 | printf_filtered ("Breakpoint %d at ", b->number); |
d24c0599 | 2142 | print_address_numeric (b->address, 1, gdb_stdout); |
d889f6b7 | 2143 | if (b->source_file) |
bd5635a1 | 2144 | printf_filtered (": file %s, line %d.", |
d889f6b7 | 2145 | b->source_file, b->line_number); |
51b57ded | 2146 | break; |
11054881 KH |
2147 | case bp_hardware_breakpoint: |
2148 | printf_filtered ("Hardware assisted breakpoint %d at ", b->number); | |
2149 | print_address_numeric (b->address, 1, gdb_stdout); | |
2150 | if (b->source_file) | |
2151 | printf_filtered (": file %s, line %d.", | |
2152 | b->source_file, b->line_number); | |
2153 | break; | |
51b57ded FF |
2154 | case bp_until: |
2155 | case bp_finish: | |
2156 | case bp_longjmp: | |
2157 | case bp_longjmp_resume: | |
fee933f1 | 2158 | case bp_step_resume: |
bcc37718 | 2159 | case bp_through_sigtramp: |
199b2450 | 2160 | case bp_call_dummy: |
999dd04b | 2161 | case bp_watchpoint_scope: |
51b57ded | 2162 | break; |
bd5635a1 RP |
2163 | } |
2164 | printf_filtered ("\n"); | |
2165 | } | |
2166 | ||
2167 | #if 0 | |
2168 | /* Nobody calls this currently. */ | |
2169 | /* Set a breakpoint from a symtab and line. | |
2170 | If TEMPFLAG is nonzero, it is a temporary breakpoint. | |
2171 | ADDR_STRING is a malloc'd string holding the name of where we are | |
2172 | setting the breakpoint. This is used later to re-set it after the | |
2173 | program is relinked and symbols are reloaded. | |
2174 | Print the same confirmation messages that the breakpoint command prints. */ | |
2175 | ||
2176 | void | |
2177 | set_breakpoint (s, line, tempflag, addr_string) | |
2178 | struct symtab *s; | |
2179 | int line; | |
2180 | int tempflag; | |
2181 | char *addr_string; | |
2182 | { | |
2183 | register struct breakpoint *b; | |
2184 | struct symtab_and_line sal; | |
2185 | ||
2186 | sal.symtab = s; | |
2187 | sal.line = line; | |
30875e1c SG |
2188 | sal.pc = 0; |
2189 | resolve_sal_pc (&sal); /* Might error out */ | |
2190 | describe_other_breakpoints (sal.pc); | |
bd5635a1 | 2191 | |
30875e1c SG |
2192 | b = set_raw_breakpoint (sal); |
2193 | set_breakpoint_count (breakpoint_count + 1); | |
2194 | b->number = breakpoint_count; | |
2195 | b->type = bp_breakpoint; | |
2196 | b->cond = 0; | |
2197 | b->addr_string = addr_string; | |
2198 | b->enable = enabled; | |
2199 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 | 2200 | |
30875e1c | 2201 | mention (b); |
bd5635a1 | 2202 | } |
30875e1c | 2203 | #endif /* 0 */ |
bd5635a1 RP |
2204 | \f |
2205 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
11054881 KH |
2206 | flag: first bit : 0 non-temporary, 1 temporary. |
2207 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
bd5635a1 RP |
2208 | |
2209 | static void | |
11054881 | 2210 | break_command_1 (arg, flag, from_tty) |
bd5635a1 | 2211 | char *arg; |
11054881 | 2212 | int flag, from_tty; |
bd5635a1 | 2213 | { |
11054881 | 2214 | int tempflag, hardwareflag; |
bd5635a1 RP |
2215 | struct symtabs_and_lines sals; |
2216 | struct symtab_and_line sal; | |
2217 | register struct expression *cond = 0; | |
2218 | register struct breakpoint *b; | |
2219 | ||
2220 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
2221 | char *cond_start = NULL; | |
fee933f1 | 2222 | char *cond_end = NULL; |
bd5635a1 RP |
2223 | /* Pointers in arg to the start, and one past the end, |
2224 | of the address part. */ | |
2225 | char *addr_start = NULL; | |
fee933f1 | 2226 | char *addr_end = NULL; |
d889f6b7 | 2227 | struct cleanup *old_chain; |
fee933f1 | 2228 | struct cleanup *canonical_strings_chain = NULL; |
d889f6b7 | 2229 | char **canonical = (char **)NULL; |
bd5635a1 | 2230 | int i; |
199b2450 | 2231 | int thread; |
bd5635a1 | 2232 | |
11054881 KH |
2233 | hardwareflag = flag & 2; |
2234 | tempflag = flag & 1; | |
2235 | ||
bd5635a1 RP |
2236 | sals.sals = NULL; |
2237 | sals.nelts = 0; | |
2238 | ||
2239 | sal.line = sal.pc = sal.end = 0; | |
2240 | sal.symtab = 0; | |
2241 | ||
2242 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
2243 | ||
2244 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2245 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2246 | { | |
2247 | if (default_breakpoint_valid) | |
2248 | { | |
2249 | sals.sals = (struct symtab_and_line *) | |
2250 | xmalloc (sizeof (struct symtab_and_line)); | |
2251 | sal.pc = default_breakpoint_address; | |
2252 | sal.line = default_breakpoint_line; | |
2253 | sal.symtab = default_breakpoint_symtab; | |
2254 | sals.sals[0] = sal; | |
2255 | sals.nelts = 1; | |
2256 | } | |
2257 | else | |
2258 | error ("No default breakpoint address now."); | |
2259 | } | |
2260 | else | |
2261 | { | |
2262 | addr_start = arg; | |
2263 | ||
2264 | /* Force almost all breakpoints to be in terms of the | |
2265 | current_source_symtab (which is decode_line_1's default). This | |
2266 | should produce the results we want almost all of the time while | |
2267 | leaving default_breakpoint_* alone. */ | |
2268 | if (default_breakpoint_valid | |
2269 | && (!current_source_symtab | |
2270 | || (arg && (*arg == '+' || *arg == '-')))) | |
2271 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2272 | default_breakpoint_line, &canonical); |
bd5635a1 | 2273 | else |
d889f6b7 | 2274 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical); |
bd5635a1 RP |
2275 | |
2276 | addr_end = arg; | |
2277 | } | |
2278 | ||
2279 | if (! sals.nelts) | |
2280 | return; | |
2281 | ||
d889f6b7 JK |
2282 | /* Make sure that all storage allocated in decode_line_1 gets freed in case |
2283 | the following `for' loop errors out. */ | |
2284 | old_chain = make_cleanup (free, sals.sals); | |
2285 | if (canonical != (char **)NULL) | |
2286 | { | |
2287 | make_cleanup (free, canonical); | |
2288 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
2289 | for (i = 0; i < sals.nelts; i++) | |
2290 | { | |
2291 | if (canonical[i] != NULL) | |
2292 | make_cleanup (free, canonical[i]); | |
2293 | } | |
2294 | } | |
2295 | ||
199b2450 TL |
2296 | thread = -1; /* No specific thread yet */ |
2297 | ||
30875e1c SG |
2298 | /* Resolve all line numbers to PC's, and verify that conditions |
2299 | can be parsed, before setting any breakpoints. */ | |
bd5635a1 RP |
2300 | for (i = 0; i < sals.nelts; i++) |
2301 | { | |
199b2450 TL |
2302 | char *tok, *end_tok; |
2303 | int toklen; | |
2304 | ||
30875e1c | 2305 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 | 2306 | |
199b2450 TL |
2307 | tok = arg; |
2308 | ||
2309 | while (tok && *tok) | |
bd5635a1 | 2310 | { |
199b2450 TL |
2311 | while (*tok == ' ' || *tok == '\t') |
2312 | tok++; | |
2313 | ||
2314 | end_tok = tok; | |
2315 | ||
2316 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2317 | end_tok++; | |
2318 | ||
2319 | toklen = end_tok - tok; | |
2320 | ||
2321 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2322 | { | |
2323 | tok = cond_start = end_tok + 1; | |
2324 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
2325 | cond_end = tok; | |
2326 | } | |
2327 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
bd5635a1 | 2328 | { |
199b2450 TL |
2329 | char *tmptok; |
2330 | ||
2331 | tok = end_tok + 1; | |
2332 | tmptok = tok; | |
2333 | thread = strtol (tok, &tok, 0); | |
2334 | if (tok == tmptok) | |
2335 | error ("Junk after thread keyword."); | |
2336 | if (!valid_thread_id (thread)) | |
2337 | error ("Unknown thread %d\n", thread); | |
bd5635a1 RP |
2338 | } |
2339 | else | |
2340 | error ("Junk at end of arguments."); | |
2341 | } | |
bd5635a1 | 2342 | } |
11054881 KH |
2343 | if (hardwareflag) |
2344 | { | |
2345 | int i, other_type_used, target_resources_ok; | |
2346 | i = hw_breakpoint_used_count(); | |
2347 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
2348 | bp_hardware_breakpoint, i+sals.nelts, 0); | |
2349 | if (target_resources_ok == 0) | |
2350 | error ("No hardware breakpoint support in the target."); | |
2351 | else if (target_resources_ok < 0) | |
2352 | error ("Hardware breakpoints used exceeds limit."); | |
2353 | } | |
bd5635a1 | 2354 | |
d889f6b7 JK |
2355 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
2356 | if (canonical != (char **)NULL) | |
2357 | discard_cleanups (canonical_strings_chain); | |
2358 | ||
30875e1c | 2359 | /* Now set all the breakpoints. */ |
bd5635a1 RP |
2360 | for (i = 0; i < sals.nelts; i++) |
2361 | { | |
2362 | sal = sals.sals[i]; | |
2363 | ||
2364 | if (from_tty) | |
2365 | describe_other_breakpoints (sal.pc); | |
2366 | ||
2367 | b = set_raw_breakpoint (sal); | |
2368 | set_breakpoint_count (breakpoint_count + 1); | |
2369 | b->number = breakpoint_count; | |
11054881 | 2370 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; |
bd5635a1 | 2371 | b->cond = cond; |
199b2450 | 2372 | b->thread = thread; |
0a97f6c4 | 2373 | |
d889f6b7 JK |
2374 | /* If a canonical line spec is needed use that instead of the |
2375 | command string. */ | |
2376 | if (canonical != (char **)NULL && canonical[i] != NULL) | |
2377 | b->addr_string = canonical[i]; | |
2378 | else if (addr_start) | |
bd5635a1 RP |
2379 | b->addr_string = savestring (addr_start, addr_end - addr_start); |
2380 | if (cond_start) | |
2381 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2382 | ||
30875e1c SG |
2383 | b->enable = enabled; |
2384 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 RP |
2385 | |
2386 | mention (b); | |
2387 | } | |
2388 | ||
2389 | if (sals.nelts > 1) | |
2390 | { | |
833e0d94 JK |
2391 | printf_filtered ("Multiple breakpoints were set.\n"); |
2392 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 2393 | } |
d889f6b7 | 2394 | do_cleanups (old_chain); |
bd5635a1 RP |
2395 | } |
2396 | ||
30875e1c SG |
2397 | /* Helper function for break_command_1 and disassemble_command. */ |
2398 | ||
2399 | void | |
2400 | resolve_sal_pc (sal) | |
2401 | struct symtab_and_line *sal; | |
2402 | { | |
2403 | CORE_ADDR pc; | |
2404 | ||
2405 | if (sal->pc == 0 && sal->symtab != 0) | |
2406 | { | |
2407 | pc = find_line_pc (sal->symtab, sal->line); | |
2408 | if (pc == 0) | |
2409 | error ("No line %d in file \"%s\".", | |
2410 | sal->line, sal->symtab->filename); | |
2411 | sal->pc = pc; | |
2412 | } | |
2413 | } | |
2414 | ||
11054881 KH |
2415 | #define BP_TEMPFLAG 1 |
2416 | #define BP_HARDWAREFLAG 2 | |
bd5635a1 RP |
2417 | void |
2418 | break_command (arg, from_tty) | |
2419 | char *arg; | |
2420 | int from_tty; | |
2421 | { | |
2422 | break_command_1 (arg, 0, from_tty); | |
2423 | } | |
2424 | ||
2425 | static void | |
2426 | tbreak_command (arg, from_tty) | |
2427 | char *arg; | |
2428 | int from_tty; | |
2429 | { | |
11054881 KH |
2430 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
2431 | } | |
2432 | ||
2433 | static void | |
2434 | hbreak_command (arg, from_tty) | |
2435 | char *arg; | |
2436 | int from_tty; | |
2437 | { | |
2438 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
2439 | } | |
2440 | ||
2441 | static void | |
2442 | thbreak_command (arg, from_tty) | |
2443 | char *arg; | |
2444 | int from_tty; | |
2445 | { | |
2446 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
bd5635a1 RP |
2447 | } |
2448 | ||
bdbd5f50 | 2449 | /* ARGSUSED */ |
11054881 KH |
2450 | /* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) |
2451 | */ | |
bd5635a1 | 2452 | static void |
11054881 | 2453 | watch_command_1 (arg, accessflag, from_tty) |
bd5635a1 | 2454 | char *arg; |
11054881 | 2455 | int accessflag; |
bd5635a1 RP |
2456 | int from_tty; |
2457 | { | |
2458 | struct breakpoint *b; | |
2459 | struct symtab_and_line sal; | |
f266e564 JK |
2460 | struct expression *exp; |
2461 | struct block *exp_valid_block; | |
11054881 | 2462 | struct value *val, *mark; |
999dd04b | 2463 | FRAME frame, prev_frame; |
11054881 KH |
2464 | char *exp_start = NULL; |
2465 | char *exp_end = NULL; | |
2466 | char *tok, *end_tok; | |
2467 | int toklen; | |
2468 | char *cond_start = NULL; | |
2469 | char *cond_end = NULL; | |
2470 | struct expression *cond = NULL; | |
2471 | int i, other_type_used, target_resources_ok; | |
2472 | enum bptype bp_type; | |
2473 | int mem_cnt = 0; | |
bd5635a1 | 2474 | |
30875e1c | 2475 | sal.pc = 0; |
bd5635a1 RP |
2476 | sal.symtab = NULL; |
2477 | sal.line = 0; | |
2478 | ||
f266e564 JK |
2479 | /* Parse arguments. */ |
2480 | innermost_block = NULL; | |
11054881 KH |
2481 | exp_start = arg; |
2482 | exp = parse_exp_1 (&arg, 0, 0); | |
2483 | exp_end = arg; | |
f266e564 | 2484 | exp_valid_block = innermost_block; |
11054881 | 2485 | mark = value_mark (); |
f266e564 JK |
2486 | val = evaluate_expression (exp); |
2487 | release_value (val); | |
2d313932 JK |
2488 | if (VALUE_LAZY (val)) |
2489 | value_fetch_lazy (val); | |
f266e564 | 2490 | |
11054881 KH |
2491 | tok = arg; |
2492 | while (*tok == ' ' || *tok == '\t') | |
2493 | tok++; | |
2494 | end_tok = tok; | |
2495 | ||
2496 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2497 | end_tok++; | |
2498 | ||
2499 | toklen = end_tok - tok; | |
2500 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2501 | { | |
2502 | tok = cond_start = end_tok + 1; | |
2503 | cond = parse_exp_1 (&tok, 0, 0); | |
2504 | cond_end = tok; | |
2505 | } | |
2506 | if (*tok) | |
2507 | error("Junk at end of command."); | |
2508 | ||
2509 | if (accessflag == 1) bp_type = bp_read_watchpoint; | |
2510 | else if (accessflag == 2) bp_type = bp_access_watchpoint; | |
2511 | else bp_type = bp_hardware_watchpoint; | |
2512 | ||
2513 | mem_cnt = can_use_hardware_watchpoint (val); | |
2514 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
2515 | error ("Expression cannot be implemented with read/access watchpoint."); | |
2516 | if (mem_cnt != 0) { | |
2517 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
2518 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
2519 | bp_type, i + mem_cnt, other_type_used); | |
2520 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) | |
2521 | error ("Target does not have this type of hardware watchpoint support."); | |
2522 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) | |
2523 | error ("Target resources have been allocated for other types of watchpoints."); | |
2524 | } | |
2525 | ||
f266e564 | 2526 | /* Now set up the breakpoint. */ |
bd5635a1 RP |
2527 | b = set_raw_breakpoint (sal); |
2528 | set_breakpoint_count (breakpoint_count + 1); | |
2529 | b->number = breakpoint_count; | |
30875e1c | 2530 | b->disposition = donttouch; |
f266e564 JK |
2531 | b->exp = exp; |
2532 | b->exp_valid_block = exp_valid_block; | |
11054881 | 2533 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
f266e564 | 2534 | b->val = val; |
11054881 KH |
2535 | b->cond = cond; |
2536 | if (cond_start) | |
2537 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2538 | else | |
2539 | b->cond_string = 0; | |
2540 | ||
999dd04b JL |
2541 | frame = block_innermost_frame (exp_valid_block); |
2542 | if (frame) | |
2543 | { | |
2544 | prev_frame = get_prev_frame (frame); | |
2545 | b->watchpoint_frame = FRAME_FP (frame); | |
2546 | } | |
2547 | else | |
9e8db445 | 2548 | b->watchpoint_frame = (CORE_ADDR)0; |
999dd04b | 2549 | |
11054881 KH |
2550 | if (mem_cnt && target_resources_ok > 0) |
2551 | b->type = bp_type; | |
999dd04b JL |
2552 | else |
2553 | b->type = bp_watchpoint; | |
2554 | ||
2555 | /* If the expression is "local", then set up a "watchpoint scope" | |
2556 | breakpoint at the point where we've left the scope of the watchpoint | |
2557 | expression. */ | |
2558 | if (innermost_block) | |
2559 | { | |
2560 | struct breakpoint *scope_breakpoint; | |
2561 | struct symtab_and_line scope_sal; | |
2562 | ||
2563 | if (prev_frame) | |
2564 | { | |
2565 | scope_sal.pc = get_frame_pc (prev_frame); | |
2566 | scope_sal.symtab = NULL; | |
2567 | scope_sal.line = 0; | |
2568 | ||
2569 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
2570 | set_breakpoint_count (breakpoint_count + 1); | |
2571 | scope_breakpoint->number = breakpoint_count; | |
2572 | ||
2573 | scope_breakpoint->type = bp_watchpoint_scope; | |
2574 | scope_breakpoint->enable = enabled; | |
2575 | ||
2576 | /* Automatically delete the breakpoint when it hits. */ | |
2577 | scope_breakpoint->disposition = delete; | |
2578 | ||
2579 | /* Only break in the proper frame (help with recursion). */ | |
2580 | scope_breakpoint->frame = prev_frame->frame; | |
2581 | ||
2582 | /* Set the address at which we will stop. */ | |
2583 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
2584 | ||
2585 | /* The scope breakpoint is related to the watchpoint. We | |
2586 | will need to act on them together. */ | |
2587 | b->related_breakpoint = scope_breakpoint; | |
2588 | } | |
2589 | } | |
11054881 | 2590 | value_free_to_mark (mark); |
bd5635a1 RP |
2591 | mention (b); |
2592 | } | |
999dd04b | 2593 | |
11054881 KH |
2594 | /* Return count of locations need to be watched and can be handled |
2595 | in hardware. If the watchpoint can not be handled | |
999dd04b JL |
2596 | in hardware return zero. */ |
2597 | ||
2598 | static int | |
11054881 KH |
2599 | can_use_hardware_watchpoint (v) |
2600 | struct value *v; | |
999dd04b | 2601 | { |
11054881 | 2602 | int found_memory_cnt = 0; |
999dd04b JL |
2603 | |
2604 | /* Make sure all the intermediate values are in memory. Also make sure | |
2605 | we found at least one memory expression. Guards against watch 0x12345, | |
2606 | which is meaningless, but could cause errors if one tries to insert a | |
2607 | hardware watchpoint for the constant expression. */ | |
11054881 | 2608 | for ( ; v; v = v->next) |
999dd04b | 2609 | { |
11054881 KH |
2610 | if (v->lval == lval_memory) |
2611 | { | |
2612 | if (TYPE_LENGTH (VALUE_TYPE (v)) <= REGISTER_SIZE) | |
2613 | found_memory_cnt++; | |
2614 | } | |
2615 | else if (v->lval != not_lval && v->modifiable == 0) | |
999dd04b | 2616 | return 0; |
999dd04b JL |
2617 | } |
2618 | ||
2619 | /* The expression itself looks suitable for using a hardware | |
2620 | watchpoint, but give the target machine a chance to reject it. */ | |
11054881 KH |
2621 | return found_memory_cnt; |
2622 | } | |
2623 | ||
2624 | static void watch_command (arg, from_tty) | |
2625 | char *arg; | |
2626 | int from_tty; | |
2627 | { | |
2628 | watch_command_1 (arg, 0, from_tty); | |
2629 | } | |
2630 | ||
2631 | static void rwatch_command (arg, from_tty) | |
2632 | char *arg; | |
2633 | int from_tty; | |
2634 | { | |
2635 | watch_command_1 (arg, 1, from_tty); | |
2636 | } | |
2637 | ||
2638 | static void awatch_command (arg, from_tty) | |
2639 | char *arg; | |
2640 | int from_tty; | |
2641 | { | |
2642 | watch_command_1 (arg, 2, from_tty); | |
999dd04b JL |
2643 | } |
2644 | ||
bd5635a1 RP |
2645 | \f |
2646 | /* | |
2647 | * Helper routine for the until_command routine in infcmd.c. Here | |
2648 | * because it uses the mechanisms of breakpoints. | |
2649 | */ | |
bdbd5f50 | 2650 | /* ARGSUSED */ |
bd5635a1 RP |
2651 | void |
2652 | until_break_command (arg, from_tty) | |
2653 | char *arg; | |
2654 | int from_tty; | |
2655 | { | |
2656 | struct symtabs_and_lines sals; | |
2657 | struct symtab_and_line sal; | |
2658 | FRAME prev_frame = get_prev_frame (selected_frame); | |
30875e1c SG |
2659 | struct breakpoint *breakpoint; |
2660 | struct cleanup *old_chain; | |
bd5635a1 RP |
2661 | |
2662 | clear_proceed_status (); | |
2663 | ||
2664 | /* Set a breakpoint where the user wants it and at return from | |
2665 | this function */ | |
2666 | ||
2667 | if (default_breakpoint_valid) | |
2668 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2669 | default_breakpoint_line, (char ***)NULL); |
bd5635a1 | 2670 | else |
d889f6b7 | 2671 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
2672 | |
2673 | if (sals.nelts != 1) | |
2674 | error ("Couldn't get information on specified line."); | |
2675 | ||
2676 | sal = sals.sals[0]; | |
c8950965 | 2677 | free ((PTR)sals.sals); /* malloc'd, so freed */ |
bd5635a1 RP |
2678 | |
2679 | if (*arg) | |
2680 | error ("Junk at end of arguments."); | |
2681 | ||
30875e1c | 2682 | resolve_sal_pc (&sal); |
bd5635a1 | 2683 | |
30875e1c | 2684 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
bd5635a1 | 2685 | |
30875e1c SG |
2686 | old_chain = make_cleanup(delete_breakpoint, breakpoint); |
2687 | ||
bd5635a1 RP |
2688 | /* Keep within the current frame */ |
2689 | ||
2690 | if (prev_frame) | |
2691 | { | |
2692 | struct frame_info *fi; | |
2693 | ||
2694 | fi = get_frame_info (prev_frame); | |
2695 | sal = find_pc_line (fi->pc, 0); | |
2696 | sal.pc = fi->pc; | |
30875e1c SG |
2697 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); |
2698 | make_cleanup(delete_breakpoint, breakpoint); | |
bd5635a1 RP |
2699 | } |
2700 | ||
d7e7e851 | 2701 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
30875e1c | 2702 | do_cleanups(old_chain); |
bd5635a1 RP |
2703 | } |
2704 | \f | |
bdbd5f50 JG |
2705 | #if 0 |
2706 | /* These aren't used; I don't konw what they were for. */ | |
bd5635a1 RP |
2707 | /* Set a breakpoint at the catch clause for NAME. */ |
2708 | static int | |
2709 | catch_breakpoint (name) | |
2710 | char *name; | |
2711 | { | |
2712 | } | |
2713 | ||
2714 | static int | |
2715 | disable_catch_breakpoint () | |
2716 | { | |
2717 | } | |
2718 | ||
2719 | static int | |
2720 | delete_catch_breakpoint () | |
2721 | { | |
2722 | } | |
2723 | ||
2724 | static int | |
2725 | enable_catch_breakpoint () | |
2726 | { | |
2727 | } | |
bdbd5f50 | 2728 | #endif /* 0 */ |
bd5635a1 RP |
2729 | |
2730 | struct sal_chain | |
2731 | { | |
2732 | struct sal_chain *next; | |
2733 | struct symtab_and_line sal; | |
2734 | }; | |
2735 | ||
bdbd5f50 JG |
2736 | #if 0 |
2737 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 RP |
2738 | /* For each catch clause identified in ARGS, run FUNCTION |
2739 | with that clause as an argument. */ | |
2740 | static struct symtabs_and_lines | |
2741 | map_catch_names (args, function) | |
2742 | char *args; | |
2743 | int (*function)(); | |
2744 | { | |
2745 | register char *p = args; | |
2746 | register char *p1; | |
2747 | struct symtabs_and_lines sals; | |
bdbd5f50 | 2748 | #if 0 |
bd5635a1 | 2749 | struct sal_chain *sal_chain = 0; |
bdbd5f50 | 2750 | #endif |
bd5635a1 RP |
2751 | |
2752 | if (p == 0) | |
2753 | error_no_arg ("one or more catch names"); | |
2754 | ||
2755 | sals.nelts = 0; | |
2756 | sals.sals = NULL; | |
2757 | ||
2758 | while (*p) | |
2759 | { | |
2760 | p1 = p; | |
2761 | /* Don't swallow conditional part. */ | |
2762 | if (p1[0] == 'i' && p1[1] == 'f' | |
2763 | && (p1[2] == ' ' || p1[2] == '\t')) | |
2764 | break; | |
2765 | ||
2766 | if (isalpha (*p1)) | |
2767 | { | |
2768 | p1++; | |
2769 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
2770 | p1++; | |
2771 | } | |
2772 | ||
2773 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
2774 | error ("Arguments must be catch names."); | |
2775 | ||
2776 | *p1 = 0; | |
2777 | #if 0 | |
2778 | if (function (p)) | |
2779 | { | |
2780 | struct sal_chain *next | |
2781 | = (struct sal_chain *)alloca (sizeof (struct sal_chain)); | |
2782 | next->next = sal_chain; | |
2783 | next->sal = get_catch_sal (p); | |
2784 | sal_chain = next; | |
2785 | goto win; | |
2786 | } | |
2787 | #endif | |
199b2450 | 2788 | printf_unfiltered ("No catch clause for exception %s.\n", p); |
bdbd5f50 | 2789 | #if 0 |
bd5635a1 | 2790 | win: |
bdbd5f50 | 2791 | #endif |
bd5635a1 RP |
2792 | p = p1; |
2793 | while (*p == ' ' || *p == '\t') p++; | |
2794 | } | |
2795 | } | |
bdbd5f50 | 2796 | #endif /* 0 */ |
bd5635a1 RP |
2797 | |
2798 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
2799 | ||
2800 | static struct symtabs_and_lines | |
2801 | get_catch_sals (this_level_only) | |
2802 | int this_level_only; | |
2803 | { | |
bd5635a1 | 2804 | register struct blockvector *bl; |
777bef06 | 2805 | register struct block *block; |
bd5635a1 | 2806 | int index, have_default = 0; |
777bef06 JK |
2807 | struct frame_info *fi; |
2808 | CORE_ADDR pc; | |
bd5635a1 RP |
2809 | struct symtabs_and_lines sals; |
2810 | struct sal_chain *sal_chain = 0; | |
2811 | char *blocks_searched; | |
2812 | ||
777bef06 JK |
2813 | /* Not sure whether an error message is always the correct response, |
2814 | but it's better than a core dump. */ | |
2815 | if (selected_frame == NULL) | |
2816 | error ("No selected frame."); | |
2817 | block = get_frame_block (selected_frame); | |
2818 | fi = get_frame_info (selected_frame); | |
2819 | pc = fi->pc; | |
2820 | ||
bd5635a1 RP |
2821 | sals.nelts = 0; |
2822 | sals.sals = NULL; | |
2823 | ||
2824 | if (block == 0) | |
2825 | error ("No symbol table info available.\n"); | |
2826 | ||
2827 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
2828 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4ed3a9ea | 2829 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
2830 | |
2831 | while (block != 0) | |
2832 | { | |
2833 | CORE_ADDR end = BLOCK_END (block) - 4; | |
2834 | int last_index; | |
2835 | ||
2836 | if (bl != blockvector_for_pc (end, &index)) | |
2837 | error ("blockvector blotch"); | |
2838 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
2839 | error ("blockvector botch"); | |
2840 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
2841 | index += 1; | |
2842 | ||
2843 | /* Don't print out blocks that have gone by. */ | |
2844 | while (index < last_index | |
2845 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
2846 | index++; | |
2847 | ||
2848 | while (index < last_index | |
2849 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
2850 | { | |
2851 | if (blocks_searched[index] == 0) | |
2852 | { | |
2853 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
2854 | int nsyms; | |
2855 | register int i; | |
2856 | register struct symbol *sym; | |
2857 | ||
2858 | nsyms = BLOCK_NSYMS (b); | |
2859 | ||
2860 | for (i = 0; i < nsyms; i++) | |
2861 | { | |
2862 | sym = BLOCK_SYM (b, i); | |
2d313932 | 2863 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
2864 | { |
2865 | if (have_default) | |
2866 | continue; | |
2867 | have_default = 1; | |
2868 | } | |
2869 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
2870 | { | |
2871 | struct sal_chain *next = (struct sal_chain *) | |
2872 | alloca (sizeof (struct sal_chain)); | |
2873 | next->next = sal_chain; | |
2874 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
2875 | sal_chain = next; | |
2876 | } | |
2877 | } | |
2878 | blocks_searched[index] = 1; | |
2879 | } | |
2880 | index++; | |
2881 | } | |
2882 | if (have_default) | |
2883 | break; | |
2884 | if (sal_chain && this_level_only) | |
2885 | break; | |
2886 | ||
2887 | /* After handling the function's top-level block, stop. | |
2888 | Don't continue to its superblock, the block of | |
2889 | per-file symbols. */ | |
2890 | if (BLOCK_FUNCTION (block)) | |
2891 | break; | |
2892 | block = BLOCK_SUPERBLOCK (block); | |
2893 | } | |
2894 | ||
2895 | if (sal_chain) | |
2896 | { | |
2897 | struct sal_chain *tmp_chain; | |
2898 | ||
2899 | /* Count the number of entries. */ | |
2900 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
2901 | tmp_chain = tmp_chain->next) | |
2902 | index++; | |
2903 | ||
2904 | sals.nelts = index; | |
2905 | sals.sals = (struct symtab_and_line *) | |
2906 | xmalloc (index * sizeof (struct symtab_and_line)); | |
2907 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
2908 | sals.sals[index] = sal_chain->sal; | |
2909 | } | |
2910 | ||
2911 | return sals; | |
2912 | } | |
2913 | ||
2914 | /* Commands to deal with catching exceptions. */ | |
2915 | ||
30875e1c | 2916 | static void |
bd5635a1 RP |
2917 | catch_command_1 (arg, tempflag, from_tty) |
2918 | char *arg; | |
2919 | int tempflag; | |
2920 | int from_tty; | |
2921 | { | |
2922 | /* First, translate ARG into something we can deal with in terms | |
2923 | of breakpoints. */ | |
2924 | ||
2925 | struct symtabs_and_lines sals; | |
2926 | struct symtab_and_line sal; | |
2927 | register struct expression *cond = 0; | |
2928 | register struct breakpoint *b; | |
2929 | char *save_arg; | |
2930 | int i; | |
bd5635a1 RP |
2931 | |
2932 | sal.line = sal.pc = sal.end = 0; | |
2933 | sal.symtab = 0; | |
2934 | ||
2935 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
2936 | are breakpointed. */ | |
2937 | ||
2938 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2939 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2940 | { | |
2941 | /* Grab all active catch clauses. */ | |
2942 | sals = get_catch_sals (0); | |
2943 | } | |
2944 | else | |
2945 | { | |
2946 | /* Grab selected catch clauses. */ | |
fe675038 | 2947 | error ("catch NAME not implemented"); |
bdbd5f50 JG |
2948 | #if 0 |
2949 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 | 2950 | sals = map_catch_names (arg, catch_breakpoint); |
bdbd5f50 | 2951 | #endif |
bd5635a1 RP |
2952 | } |
2953 | ||
2954 | if (! sals.nelts) | |
2955 | return; | |
2956 | ||
2957 | save_arg = arg; | |
2958 | for (i = 0; i < sals.nelts; i++) | |
2959 | { | |
30875e1c | 2960 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
2961 | |
2962 | while (arg && *arg) | |
2963 | { | |
2964 | if (arg[0] == 'i' && arg[1] == 'f' | |
2965 | && (arg[2] == ' ' || arg[2] == '\t')) | |
30875e1c SG |
2966 | cond = parse_exp_1 ((arg += 2, &arg), |
2967 | block_for_pc (sals.sals[i].pc), 0); | |
bd5635a1 RP |
2968 | else |
2969 | error ("Junk at end of arguments."); | |
2970 | } | |
2971 | arg = save_arg; | |
bd5635a1 RP |
2972 | } |
2973 | ||
2974 | for (i = 0; i < sals.nelts; i++) | |
2975 | { | |
2976 | sal = sals.sals[i]; | |
2977 | ||
2978 | if (from_tty) | |
2979 | describe_other_breakpoints (sal.pc); | |
2980 | ||
2981 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
2982 | set_breakpoint_count (breakpoint_count + 1); |
2983 | b->number = breakpoint_count; | |
2984 | b->type = bp_breakpoint; | |
bd5635a1 | 2985 | b->cond = cond; |
30875e1c SG |
2986 | b->enable = enabled; |
2987 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 | 2988 | |
d889f6b7 | 2989 | mention (b); |
bd5635a1 RP |
2990 | } |
2991 | ||
2992 | if (sals.nelts > 1) | |
2993 | { | |
199b2450 TL |
2994 | printf_unfiltered ("Multiple breakpoints were set.\n"); |
2995 | printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 2996 | } |
c8950965 | 2997 | free ((PTR)sals.sals); |
bd5635a1 RP |
2998 | } |
2999 | ||
bdbd5f50 JG |
3000 | #if 0 |
3001 | /* These aren't used; I don't know what they were for. */ | |
bd5635a1 RP |
3002 | /* Disable breakpoints on all catch clauses described in ARGS. */ |
3003 | static void | |
3004 | disable_catch (args) | |
3005 | char *args; | |
3006 | { | |
3007 | /* Map the disable command to catch clauses described in ARGS. */ | |
3008 | } | |
3009 | ||
3010 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
3011 | static void | |
3012 | enable_catch (args) | |
3013 | char *args; | |
3014 | { | |
3015 | /* Map the disable command to catch clauses described in ARGS. */ | |
3016 | } | |
3017 | ||
3018 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
3019 | static void | |
3020 | delete_catch (args) | |
3021 | char *args; | |
3022 | { | |
3023 | /* Map the delete command to catch clauses described in ARGS. */ | |
3024 | } | |
bdbd5f50 | 3025 | #endif /* 0 */ |
bd5635a1 RP |
3026 | |
3027 | static void | |
3028 | catch_command (arg, from_tty) | |
3029 | char *arg; | |
3030 | int from_tty; | |
3031 | { | |
3032 | catch_command_1 (arg, 0, from_tty); | |
3033 | } | |
3034 | \f | |
3035 | static void | |
3036 | clear_command (arg, from_tty) | |
3037 | char *arg; | |
3038 | int from_tty; | |
3039 | { | |
3040 | register struct breakpoint *b, *b1; | |
3041 | struct symtabs_and_lines sals; | |
3042 | struct symtab_and_line sal; | |
3043 | register struct breakpoint *found; | |
3044 | int i; | |
3045 | ||
3046 | if (arg) | |
3047 | { | |
3048 | sals = decode_line_spec (arg, 1); | |
3049 | } | |
3050 | else | |
3051 | { | |
3052 | sals.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); | |
3053 | sal.line = default_breakpoint_line; | |
3054 | sal.symtab = default_breakpoint_symtab; | |
3055 | sal.pc = 0; | |
3056 | if (sal.symtab == 0) | |
3057 | error ("No source file specified."); | |
3058 | ||
3059 | sals.sals[0] = sal; | |
3060 | sals.nelts = 1; | |
3061 | } | |
3062 | ||
3063 | for (i = 0; i < sals.nelts; i++) | |
3064 | { | |
3065 | /* If exact pc given, clear bpts at that pc. | |
3066 | But if sal.pc is zero, clear all bpts on specified line. */ | |
3067 | sal = sals.sals[i]; | |
3068 | found = (struct breakpoint *) 0; | |
3069 | while (breakpoint_chain | |
d889f6b7 JK |
3070 | && (sal.pc |
3071 | ? breakpoint_chain->address == sal.pc | |
3072 | : (breakpoint_chain->source_file != NULL | |
3073 | && sal.symtab != NULL | |
3074 | && STREQ (breakpoint_chain->source_file, | |
3075 | sal.symtab->filename) | |
bd5635a1 RP |
3076 | && breakpoint_chain->line_number == sal.line))) |
3077 | { | |
3078 | b1 = breakpoint_chain; | |
3079 | breakpoint_chain = b1->next; | |
3080 | b1->next = found; | |
3081 | found = b1; | |
3082 | } | |
3083 | ||
3084 | ALL_BREAKPOINTS (b) | |
3085 | while (b->next | |
30875e1c | 3086 | && b->next->type != bp_watchpoint |
999dd04b | 3087 | && b->next->type != bp_hardware_watchpoint |
11054881 KH |
3088 | && b->next->type != bp_read_watchpoint |
3089 | && b->next->type != bp_access_watchpoint | |
d889f6b7 JK |
3090 | && (sal.pc |
3091 | ? b->next->address == sal.pc | |
3092 | : (b->next->source_file != NULL | |
3093 | && sal.symtab != NULL | |
3094 | && STREQ (b->next->source_file, sal.symtab->filename) | |
bd5635a1 RP |
3095 | && b->next->line_number == sal.line))) |
3096 | { | |
3097 | b1 = b->next; | |
3098 | b->next = b1->next; | |
3099 | b1->next = found; | |
3100 | found = b1; | |
3101 | } | |
3102 | ||
3103 | if (found == 0) | |
3104 | { | |
3105 | if (arg) | |
3106 | error ("No breakpoint at %s.", arg); | |
3107 | else | |
3108 | error ("No breakpoint at this line."); | |
3109 | } | |
3110 | ||
3111 | if (found->next) from_tty = 1; /* Always report if deleted more than one */ | |
199b2450 | 3112 | if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); |
6c803036 | 3113 | breakpoints_changed (); |
bd5635a1 RP |
3114 | while (found) |
3115 | { | |
199b2450 | 3116 | if (from_tty) printf_unfiltered ("%d ", found->number); |
bd5635a1 RP |
3117 | b1 = found->next; |
3118 | delete_breakpoint (found); | |
3119 | found = b1; | |
3120 | } | |
199b2450 | 3121 | if (from_tty) putchar_unfiltered ('\n'); |
bd5635a1 | 3122 | } |
c8950965 | 3123 | free ((PTR)sals.sals); |
bd5635a1 RP |
3124 | } |
3125 | \f | |
3126 | /* Delete breakpoint in BS if they are `delete' breakpoints. | |
3127 | This is called after any breakpoint is hit, or after errors. */ | |
3128 | ||
3129 | void | |
3130 | breakpoint_auto_delete (bs) | |
3131 | bpstat bs; | |
3132 | { | |
3133 | for (; bs; bs = bs->next) | |
cef4c2e7 PS |
3134 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == delete |
3135 | && bs->stop) | |
bd5635a1 RP |
3136 | delete_breakpoint (bs->breakpoint_at); |
3137 | } | |
3138 | ||
3139 | /* Delete a breakpoint and clean up all traces of it in the data structures. */ | |
3140 | ||
30875e1c | 3141 | void |
bd5635a1 RP |
3142 | delete_breakpoint (bpt) |
3143 | struct breakpoint *bpt; | |
3144 | { | |
3145 | register struct breakpoint *b; | |
3146 | register bpstat bs; | |
3147 | ||
3148 | if (bpt->inserted) | |
999dd04b JL |
3149 | remove_breakpoint (bpt); |
3150 | ||
bd5635a1 RP |
3151 | if (breakpoint_chain == bpt) |
3152 | breakpoint_chain = bpt->next; | |
3153 | ||
3154 | ALL_BREAKPOINTS (b) | |
3155 | if (b->next == bpt) | |
3156 | { | |
3157 | b->next = bpt->next; | |
3158 | break; | |
3159 | } | |
3160 | ||
3161 | check_duplicates (bpt->address); | |
fe675038 JK |
3162 | /* If this breakpoint was inserted, and there is another breakpoint |
3163 | at the same address, we need to insert the other breakpoint. */ | |
999dd04b | 3164 | if (bpt->inserted |
11054881 KH |
3165 | && bpt->type != bp_hardware_watchpoint |
3166 | && bpt->type != bp_read_watchpoint | |
3167 | && bpt->type != bp_access_watchpoint) | |
fe675038 JK |
3168 | { |
3169 | ALL_BREAKPOINTS (b) | |
ebad9e90 JK |
3170 | if (b->address == bpt->address |
3171 | && !b->duplicate | |
3172 | && b->enable != disabled) | |
fe675038 JK |
3173 | { |
3174 | int val; | |
3175 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
3176 | if (val != 0) | |
3177 | { | |
05052b63 | 3178 | target_terminal_ours_for_output (); |
199b2450 | 3179 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
fe675038 JK |
3180 | memory_error (val, b->address); /* which bombs us out */ |
3181 | } | |
3182 | else | |
3183 | b->inserted = 1; | |
3184 | } | |
3185 | } | |
bd5635a1 RP |
3186 | |
3187 | free_command_lines (&bpt->commands); | |
3188 | if (bpt->cond) | |
d889f6b7 | 3189 | free (bpt->cond); |
bd5635a1 | 3190 | if (bpt->cond_string != NULL) |
d889f6b7 | 3191 | free (bpt->cond_string); |
bd5635a1 | 3192 | if (bpt->addr_string != NULL) |
d889f6b7 | 3193 | free (bpt->addr_string); |
0eaaa46a | 3194 | if (bpt->exp_string != NULL) |
d889f6b7 JK |
3195 | free (bpt->exp_string); |
3196 | if (bpt->source_file != NULL) | |
3197 | free (bpt->source_file); | |
bd5635a1 | 3198 | |
6c803036 | 3199 | breakpoints_changed (); |
bd5635a1 RP |
3200 | |
3201 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
05052b63 JK |
3202 | /* FIXME, how can we find all bpstat's? |
3203 | We just check stop_bpstat for now. */ | |
bd5635a1 RP |
3204 | for (bs = stop_bpstat; bs; bs = bs->next) |
3205 | if (bs->breakpoint_at == bpt) | |
3206 | bs->breakpoint_at = NULL; | |
c8950965 | 3207 | free ((PTR)bpt); |
bd5635a1 RP |
3208 | } |
3209 | ||
bd5635a1 RP |
3210 | static void |
3211 | delete_command (arg, from_tty) | |
3212 | char *arg; | |
3213 | int from_tty; | |
3214 | { | |
3215 | ||
3216 | if (arg == 0) | |
3217 | { | |
3218 | /* Ask user only if there are some breakpoints to delete. */ | |
3219 | if (!from_tty | |
3220 | || (breakpoint_chain && query ("Delete all breakpoints? ", 0, 0))) | |
3221 | { | |
3222 | /* No arg; clear all breakpoints. */ | |
3223 | while (breakpoint_chain) | |
3224 | delete_breakpoint (breakpoint_chain); | |
3225 | } | |
3226 | } | |
3227 | else | |
3228 | map_breakpoint_numbers (arg, delete_breakpoint); | |
3229 | } | |
3230 | ||
bdbd5f50 JG |
3231 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
3232 | The value we return ends up being the return value from catch_errors. | |
3233 | Unused in this case. */ | |
3234 | ||
3235 | static int | |
bd5635a1 | 3236 | breakpoint_re_set_one (bint) |
bdbd5f50 | 3237 | char *bint; |
bd5635a1 RP |
3238 | { |
3239 | struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */ | |
11054881 | 3240 | struct value *mark; |
bd5635a1 RP |
3241 | int i; |
3242 | struct symtabs_and_lines sals; | |
bd5635a1 | 3243 | char *s; |
30875e1c | 3244 | enum enable save_enable; |
bd5635a1 | 3245 | |
80ba48f5 | 3246 | switch (b->type) |
bd5635a1 | 3247 | { |
80ba48f5 | 3248 | case bp_breakpoint: |
11054881 | 3249 | case bp_hardware_breakpoint: |
80ba48f5 SG |
3250 | if (b->addr_string == NULL) |
3251 | { | |
3252 | /* Anything without a string can't be re-set. */ | |
3253 | delete_breakpoint (b); | |
3254 | return 0; | |
3255 | } | |
30875e1c SG |
3256 | /* In case we have a problem, disable this breakpoint. We'll restore |
3257 | its status if we succeed. */ | |
3258 | save_enable = b->enable; | |
3259 | b->enable = disabled; | |
3260 | ||
bd5635a1 | 3261 | s = b->addr_string; |
d889f6b7 | 3262 | sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
3263 | for (i = 0; i < sals.nelts; i++) |
3264 | { | |
30875e1c | 3265 | resolve_sal_pc (&sals.sals[i]); |
fee933f1 RP |
3266 | |
3267 | /* Reparse conditions, they might contain references to the | |
3268 | old symtab. */ | |
3269 | if (b->cond_string != NULL) | |
3270 | { | |
3271 | s = b->cond_string; | |
3272 | if (b->cond) | |
3273 | free ((PTR)b->cond); | |
3274 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); | |
3275 | } | |
3276 | ||
3277 | /* We need to re-set the breakpoint if the address changes...*/ | |
d889f6b7 | 3278 | if (b->address != sals.sals[i].pc |
fee933f1 RP |
3279 | /* ...or new and old breakpoints both have source files, and |
3280 | the source file name or the line number changes... */ | |
d889f6b7 JK |
3281 | || (b->source_file != NULL |
3282 | && sals.sals[i].symtab != NULL | |
3283 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
3284 | || b->line_number != sals.sals[i].line) | |
fee933f1 RP |
3285 | ) |
3286 | /* ...or we switch between having a source file and not having | |
3287 | one. */ | |
3288 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
3289 | ) | |
bd5635a1 | 3290 | { |
d889f6b7 JK |
3291 | if (b->source_file != NULL) |
3292 | free (b->source_file); | |
3293 | if (sals.sals[i].symtab == NULL) | |
3294 | b->source_file = NULL; | |
3295 | else | |
3296 | b->source_file = | |
3297 | savestring (sals.sals[i].symtab->filename, | |
3298 | strlen (sals.sals[i].symtab->filename)); | |
8537ba60 SG |
3299 | b->line_number = sals.sals[i].line; |
3300 | b->address = sals.sals[i].pc; | |
bd5635a1 | 3301 | |
8537ba60 | 3302 | check_duplicates (b->address); |
bd5635a1 | 3303 | |
8537ba60 | 3304 | mention (b); |
6c803036 JK |
3305 | |
3306 | /* Might be better to do this just once per breakpoint_re_set, | |
3307 | rather than once for every breakpoint. */ | |
3308 | breakpoints_changed (); | |
8537ba60 | 3309 | } |
30875e1c | 3310 | b->enable = save_enable; /* Restore it, this worked. */ |
bd5635a1 | 3311 | } |
c8950965 | 3312 | free ((PTR)sals.sals); |
80ba48f5 | 3313 | break; |
2d313932 | 3314 | |
80ba48f5 | 3315 | case bp_watchpoint: |
999dd04b | 3316 | case bp_hardware_watchpoint: |
11054881 KH |
3317 | case bp_read_watchpoint: |
3318 | case bp_access_watchpoint: | |
0eaaa46a | 3319 | innermost_block = NULL; |
0a97f6c4 JK |
3320 | /* The issue arises of what context to evaluate this in. The same |
3321 | one as when it was set, but what does that mean when symbols have | |
3322 | been re-read? We could save the filename and functionname, but | |
3323 | if the context is more local than that, the best we could do would | |
3324 | be something like how many levels deep and which index at that | |
3325 | particular level, but that's going to be less stable than filenames | |
3326 | or functionnames. */ | |
3327 | /* So for now, just use a global context. */ | |
0eaaa46a JK |
3328 | b->exp = parse_expression (b->exp_string); |
3329 | b->exp_valid_block = innermost_block; | |
11054881 | 3330 | mark = value_mark (); |
0eaaa46a JK |
3331 | b->val = evaluate_expression (b->exp); |
3332 | release_value (b->val); | |
3333 | if (VALUE_LAZY (b->val)) | |
3334 | value_fetch_lazy (b->val); | |
3335 | ||
2d313932 JK |
3336 | if (b->cond_string != NULL) |
3337 | { | |
3338 | s = b->cond_string; | |
3339 | b->cond = parse_exp_1 (&s, (struct block *)0, 0); | |
3340 | } | |
cabd4da6 JK |
3341 | if (b->enable == enabled) |
3342 | mention (b); | |
11054881 | 3343 | value_free_to_mark (mark); |
80ba48f5 | 3344 | break; |
2d313932 | 3345 | |
80ba48f5 SG |
3346 | default: |
3347 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
2d313932 | 3348 | /* fall through */ |
80ba48f5 SG |
3349 | case bp_until: |
3350 | case bp_finish: | |
3351 | case bp_longjmp: | |
3352 | case bp_longjmp_resume: | |
999dd04b | 3353 | case bp_watchpoint_scope: |
cf3e377e | 3354 | case bp_call_dummy: |
80ba48f5 SG |
3355 | delete_breakpoint (b); |
3356 | break; | |
bd5635a1 | 3357 | } |
80ba48f5 | 3358 | |
bdbd5f50 | 3359 | return 0; |
bd5635a1 RP |
3360 | } |
3361 | ||
3362 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
3363 | void | |
3364 | breakpoint_re_set () | |
3365 | { | |
cba0d141 | 3366 | struct breakpoint *b, *temp; |
30875e1c SG |
3367 | static char message1[] = "Error in re-setting breakpoint %d:\n"; |
3368 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 | 3369 | |
cba0d141 | 3370 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 3371 | { |
2d313932 | 3372 | sprintf (message, message1, b->number); /* Format possible error msg */ |
fe675038 JK |
3373 | catch_errors (breakpoint_re_set_one, (char *) b, message, |
3374 | RETURN_MASK_ALL); | |
bd5635a1 RP |
3375 | } |
3376 | ||
80ba48f5 SG |
3377 | create_longjmp_breakpoint("longjmp"); |
3378 | create_longjmp_breakpoint("_longjmp"); | |
3379 | create_longjmp_breakpoint("siglongjmp"); | |
3380 | create_longjmp_breakpoint(NULL); | |
3381 | ||
1eeba686 PB |
3382 | #if 0 |
3383 | /* Took this out (temporaliy at least), since it produces an extra | |
3384 | blank line at startup. This messes up the gdbtests. -PB */ | |
bd5635a1 RP |
3385 | /* Blank line to finish off all those mention() messages we just printed. */ |
3386 | printf_filtered ("\n"); | |
1eeba686 | 3387 | #endif |
bd5635a1 RP |
3388 | } |
3389 | \f | |
3390 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
3391 | If from_tty is nonzero, it prints a message to that effect, | |
3392 | which ends with a period (no newline). */ | |
3393 | ||
3394 | void | |
3395 | set_ignore_count (bptnum, count, from_tty) | |
3396 | int bptnum, count, from_tty; | |
3397 | { | |
3398 | register struct breakpoint *b; | |
3399 | ||
3400 | if (count < 0) | |
3401 | count = 0; | |
3402 | ||
3403 | ALL_BREAKPOINTS (b) | |
3404 | if (b->number == bptnum) | |
3405 | { | |
3406 | b->ignore_count = count; | |
3407 | if (!from_tty) | |
3408 | return; | |
3409 | else if (count == 0) | |
423e9664 SG |
3410 | printf_filtered ("Will stop next time breakpoint %d is reached.", |
3411 | bptnum); | |
bd5635a1 | 3412 | else if (count == 1) |
423e9664 SG |
3413 | printf_filtered ("Will ignore next crossing of breakpoint %d.", |
3414 | bptnum); | |
bd5635a1 | 3415 | else |
423e9664 | 3416 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", |
bd5635a1 | 3417 | count, bptnum); |
6c803036 | 3418 | breakpoints_changed (); |
bd5635a1 RP |
3419 | return; |
3420 | } | |
3421 | ||
3422 | error ("No breakpoint number %d.", bptnum); | |
3423 | } | |
3424 | ||
3425 | /* Clear the ignore counts of all breakpoints. */ | |
3426 | void | |
3427 | breakpoint_clear_ignore_counts () | |
3428 | { | |
3429 | struct breakpoint *b; | |
3430 | ||
3431 | ALL_BREAKPOINTS (b) | |
3432 | b->ignore_count = 0; | |
3433 | } | |
3434 | ||
3435 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
3436 | ||
3437 | static void | |
3438 | ignore_command (args, from_tty) | |
3439 | char *args; | |
3440 | int from_tty; | |
3441 | { | |
3442 | char *p = args; | |
3443 | register int num; | |
3444 | ||
3445 | if (p == 0) | |
3446 | error_no_arg ("a breakpoint number"); | |
3447 | ||
3448 | num = get_number (&p); | |
3449 | ||
3450 | if (*p == 0) | |
3451 | error ("Second argument (specified ignore-count) is missing."); | |
3452 | ||
bdbd5f50 JG |
3453 | set_ignore_count (num, |
3454 | longest_to_int (value_as_long (parse_and_eval (p))), | |
3455 | from_tty); | |
423e9664 | 3456 | printf_filtered ("\n"); |
6c803036 | 3457 | breakpoints_changed (); |
bd5635a1 RP |
3458 | } |
3459 | \f | |
3460 | /* Call FUNCTION on each of the breakpoints | |
3461 | whose numbers are given in ARGS. */ | |
3462 | ||
3463 | static void | |
3464 | map_breakpoint_numbers (args, function) | |
3465 | char *args; | |
30875e1c | 3466 | void (*function) PARAMS ((struct breakpoint *)); |
bd5635a1 RP |
3467 | { |
3468 | register char *p = args; | |
3469 | char *p1; | |
3470 | register int num; | |
3471 | register struct breakpoint *b; | |
3472 | ||
3473 | if (p == 0) | |
3474 | error_no_arg ("one or more breakpoint numbers"); | |
3475 | ||
3476 | while (*p) | |
3477 | { | |
3478 | p1 = p; | |
3479 | ||
3480 | num = get_number (&p1); | |
3481 | ||
3482 | ALL_BREAKPOINTS (b) | |
3483 | if (b->number == num) | |
3484 | { | |
999dd04b | 3485 | struct breakpoint *related_breakpoint = b->related_breakpoint; |
bd5635a1 | 3486 | function (b); |
999dd04b JL |
3487 | if (related_breakpoint) |
3488 | function (related_breakpoint); | |
bd5635a1 RP |
3489 | goto win; |
3490 | } | |
199b2450 | 3491 | printf_unfiltered ("No breakpoint number %d.\n", num); |
bd5635a1 RP |
3492 | win: |
3493 | p = p1; | |
3494 | } | |
3495 | } | |
3496 | ||
3497 | static void | |
3498 | enable_breakpoint (bpt) | |
3499 | struct breakpoint *bpt; | |
3500 | { | |
fee933f1 | 3501 | FRAME save_selected_frame = NULL; |
fa99ebe1 | 3502 | int save_selected_frame_level = -1; |
11054881 KH |
3503 | int target_resources_ok, other_type_used; |
3504 | struct value *mark; | |
fa99ebe1 | 3505 | |
11054881 KH |
3506 | if (bpt->type == bp_hardware_breakpoint) |
3507 | { | |
3508 | int i; | |
3509 | i = hw_breakpoint_used_count(); | |
3510 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3511 | bp_hardware_breakpoint, i+1, 0); | |
3512 | if (target_resources_ok == 0) | |
3513 | error ("No hardware breakpoint support in the target."); | |
3514 | else if (target_resources_ok < 0) | |
3515 | error ("Hardware breakpoints used exceeds limit."); | |
3516 | } | |
bd5635a1 | 3517 | bpt->enable = enabled; |
6c803036 | 3518 | breakpoints_changed (); |
bd5635a1 | 3519 | check_duplicates (bpt->address); |
11054881 KH |
3520 | |
3521 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3522 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
bd5635a1 | 3523 | { |
fa99ebe1 | 3524 | if (bpt->exp_valid_block != NULL) |
f266e564 | 3525 | { |
999dd04b | 3526 | FRAME fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); |
fa99ebe1 JK |
3527 | if (fr == NULL) |
3528 | { | |
3529 | printf_filtered ("\ | |
f266e564 JK |
3530 | Cannot enable watchpoint %d because the block in which its expression\n\ |
3531 | is valid is not currently in scope.\n", bpt->number); | |
fa99ebe1 JK |
3532 | bpt->enable = disabled; |
3533 | return; | |
3534 | } | |
999dd04b | 3535 | |
fa99ebe1 JK |
3536 | save_selected_frame = selected_frame; |
3537 | save_selected_frame_level = selected_frame_level; | |
3538 | select_frame (fr, -1); | |
f266e564 JK |
3539 | } |
3540 | ||
bd5635a1 | 3541 | value_free (bpt->val); |
11054881 | 3542 | mark = value_mark (); |
bd5635a1 RP |
3543 | bpt->val = evaluate_expression (bpt->exp); |
3544 | release_value (bpt->val); | |
2d313932 JK |
3545 | if (VALUE_LAZY (bpt->val)) |
3546 | value_fetch_lazy (bpt->val); | |
fa99ebe1 | 3547 | |
11054881 KH |
3548 | if (bpt->type == bp_hardware_watchpoint || |
3549 | bpt->type == bp_read_watchpoint || | |
3550 | bpt->type == bp_access_watchpoint) | |
3551 | { | |
3552 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3553 | int mem_cnt = can_use_hardware_watchpoint(bpt->val); | |
3554 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3555 | bpt->type, i+mem_cnt, other_type_used); | |
3556 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
3557 | bp_watchpoint in the following condition */ | |
3558 | if (target_resources_ok < 0) | |
3559 | { | |
3560 | printf_filtered("\ | |
3561 | Cannot enable watchpoint %d because target watch resources\n\ | |
3562 | have been allocated for other watchpoints.\n", bpt->number); | |
3563 | bpt->enable = disabled; | |
3564 | value_free_to_mark (mark); | |
3565 | return; | |
3566 | } | |
3567 | } | |
3568 | ||
fa99ebe1 JK |
3569 | if (save_selected_frame_level >= 0) |
3570 | select_frame (save_selected_frame, save_selected_frame_level); | |
11054881 | 3571 | value_free_to_mark (mark); |
bd5635a1 RP |
3572 | } |
3573 | } | |
3574 | ||
bdbd5f50 | 3575 | /* ARGSUSED */ |
bd5635a1 RP |
3576 | static void |
3577 | enable_command (args, from_tty) | |
3578 | char *args; | |
3579 | int from_tty; | |
3580 | { | |
3581 | struct breakpoint *bpt; | |
3582 | if (args == 0) | |
3583 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3584 | switch (bpt->type) |
3585 | { | |
3586 | case bp_breakpoint: | |
11054881 | 3587 | case bp_hardware_breakpoint: |
423e9664 | 3588 | case bp_watchpoint: |
999dd04b | 3589 | case bp_hardware_watchpoint: |
11054881 KH |
3590 | case bp_read_watchpoint: |
3591 | case bp_access_watchpoint: | |
423e9664 SG |
3592 | enable_breakpoint (bpt); |
3593 | default: | |
3594 | continue; | |
3595 | } | |
bd5635a1 RP |
3596 | else |
3597 | map_breakpoint_numbers (args, enable_breakpoint); | |
3598 | } | |
3599 | ||
3600 | static void | |
3601 | disable_breakpoint (bpt) | |
3602 | struct breakpoint *bpt; | |
3603 | { | |
999dd04b JL |
3604 | /* Never disable a watchpoint scope breakpoint; we want to |
3605 | hit them when we leave scope so we can delete both the | |
3606 | watchpoint and its scope breakpoint at that time. */ | |
3607 | if (bpt->type == bp_watchpoint_scope) | |
3608 | return; | |
3609 | ||
bd5635a1 RP |
3610 | bpt->enable = disabled; |
3611 | ||
6c803036 | 3612 | breakpoints_changed (); |
bd5635a1 RP |
3613 | |
3614 | check_duplicates (bpt->address); | |
3615 | } | |
3616 | ||
bdbd5f50 | 3617 | /* ARGSUSED */ |
bd5635a1 RP |
3618 | static void |
3619 | disable_command (args, from_tty) | |
3620 | char *args; | |
3621 | int from_tty; | |
3622 | { | |
3623 | register struct breakpoint *bpt; | |
3624 | if (args == 0) | |
3625 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3626 | switch (bpt->type) |
3627 | { | |
3628 | case bp_breakpoint: | |
11054881 KH |
3629 | case bp_hardware_breakpoint: |
3630 | case bp_watchpoint: | |
3631 | case bp_hardware_watchpoint: | |
3632 | case bp_read_watchpoint: | |
3633 | case bp_access_watchpoint: | |
423e9664 SG |
3634 | disable_breakpoint (bpt); |
3635 | default: | |
3636 | continue; | |
3637 | } | |
bd5635a1 RP |
3638 | else |
3639 | map_breakpoint_numbers (args, disable_breakpoint); | |
3640 | } | |
3641 | ||
3642 | static void | |
3643 | enable_once_breakpoint (bpt) | |
3644 | struct breakpoint *bpt; | |
3645 | { | |
11054881 KH |
3646 | FRAME save_selected_frame = NULL; |
3647 | int save_selected_frame_level = -1; | |
3648 | int target_resources_ok, other_type_used; | |
3649 | struct value *mark; | |
3650 | ||
3651 | if (bpt->type == bp_hardware_breakpoint) | |
3652 | { | |
3653 | int i; | |
3654 | i = hw_breakpoint_used_count(); | |
3655 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3656 | bp_hardware_breakpoint, i+1, 0); | |
3657 | if (target_resources_ok == 0) | |
3658 | error ("No hardware breakpoint support in the target."); | |
3659 | else if (target_resources_ok < 0) | |
3660 | error ("Hardware breakpoints used exceeds limit."); | |
3661 | } | |
3662 | ||
30875e1c SG |
3663 | bpt->enable = enabled; |
3664 | bpt->disposition = disable; | |
bd5635a1 | 3665 | check_duplicates (bpt->address); |
6c803036 | 3666 | breakpoints_changed (); |
11054881 KH |
3667 | |
3668 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3669 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
3670 | { | |
3671 | if (bpt->exp_valid_block != NULL) | |
3672 | { | |
3673 | FRAME fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
3674 | if (fr == NULL) | |
3675 | { | |
3676 | printf_filtered ("\ | |
3677 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
3678 | is valid is not currently in scope.\n", bpt->number); | |
3679 | bpt->enable = disabled; | |
3680 | return; | |
3681 | } | |
3682 | ||
3683 | save_selected_frame = selected_frame; | |
3684 | save_selected_frame_level = selected_frame_level; | |
3685 | select_frame (fr, -1); | |
3686 | } | |
3687 | ||
3688 | value_free (bpt->val); | |
3689 | mark = value_mark (); | |
3690 | bpt->val = evaluate_expression (bpt->exp); | |
3691 | release_value (bpt->val); | |
3692 | if (VALUE_LAZY (bpt->val)) | |
3693 | value_fetch_lazy (bpt->val); | |
3694 | ||
3695 | if (bpt->type == bp_hardware_watchpoint || | |
3696 | bpt->type == bp_read_watchpoint || | |
3697 | bpt->type == bp_access_watchpoint) | |
3698 | { | |
3699 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3700 | int mem_cnt = can_use_hardware_watchpoint(bpt->val); | |
3701 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3702 | bpt->type, i+mem_cnt, other_type_used); | |
3703 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
3704 | bp_watchpoint in the following condition */ | |
3705 | if (target_resources_ok < 0) | |
3706 | { | |
3707 | printf_filtered("\ | |
3708 | Cannot enable watchpoint %d because target watch resources\n\ | |
3709 | have been allocated for other watchpoints.\n", bpt->number); | |
3710 | bpt->enable = disabled; | |
3711 | value_free_to_mark (mark); | |
3712 | } | |
3713 | } | |
3714 | ||
3715 | if (save_selected_frame_level >= 0) | |
3716 | select_frame (save_selected_frame, save_selected_frame_level); | |
3717 | value_free_to_mark (mark); | |
3718 | } | |
bd5635a1 RP |
3719 | } |
3720 | ||
bdbd5f50 | 3721 | /* ARGSUSED */ |
bd5635a1 RP |
3722 | static void |
3723 | enable_once_command (args, from_tty) | |
3724 | char *args; | |
3725 | int from_tty; | |
3726 | { | |
3727 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
3728 | } | |
3729 | ||
3730 | static void | |
3731 | enable_delete_breakpoint (bpt) | |
3732 | struct breakpoint *bpt; | |
3733 | { | |
30875e1c SG |
3734 | bpt->enable = enabled; |
3735 | bpt->disposition = delete; | |
bd5635a1 RP |
3736 | |
3737 | check_duplicates (bpt->address); | |
6c803036 | 3738 | breakpoints_changed (); |
bd5635a1 RP |
3739 | } |
3740 | ||
bdbd5f50 | 3741 | /* ARGSUSED */ |
bd5635a1 RP |
3742 | static void |
3743 | enable_delete_command (args, from_tty) | |
3744 | char *args; | |
3745 | int from_tty; | |
3746 | { | |
3747 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
3748 | } | |
3749 | \f | |
3750 | /* | |
3751 | * Use default_breakpoint_'s, or nothing if they aren't valid. | |
3752 | */ | |
3753 | struct symtabs_and_lines | |
3754 | decode_line_spec_1 (string, funfirstline) | |
3755 | char *string; | |
3756 | int funfirstline; | |
3757 | { | |
3758 | struct symtabs_and_lines sals; | |
3759 | if (string == 0) | |
3760 | error ("Empty line specification."); | |
3761 | if (default_breakpoint_valid) | |
3762 | sals = decode_line_1 (&string, funfirstline, | |
d889f6b7 JK |
3763 | default_breakpoint_symtab, default_breakpoint_line, |
3764 | (char ***)NULL); | |
bd5635a1 | 3765 | else |
d889f6b7 JK |
3766 | sals = decode_line_1 (&string, funfirstline, |
3767 | (struct symtab *)NULL, 0, (char ***)NULL); | |
bd5635a1 RP |
3768 | if (*string) |
3769 | error ("Junk at end of line specification: %s", string); | |
3770 | return sals; | |
3771 | } | |
3772 | \f | |
bd5635a1 RP |
3773 | void |
3774 | _initialize_breakpoint () | |
3775 | { | |
3776 | breakpoint_chain = 0; | |
3777 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
3778 | before a breakpoint is set. */ | |
3779 | breakpoint_count = 0; | |
3780 | ||
3781 | add_com ("ignore", class_breakpoint, ignore_command, | |
3782 | "Set ignore-count of breakpoint number N to COUNT."); | |
3783 | ||
3784 | add_com ("commands", class_breakpoint, commands_command, | |
3785 | "Set commands to be executed when a breakpoint is hit.\n\ | |
3786 | Give breakpoint number as argument after \"commands\".\n\ | |
3787 | With no argument, the targeted breakpoint is the last one set.\n\ | |
3788 | The commands themselves follow starting on the next line.\n\ | |
3789 | Type a line containing \"end\" to indicate the end of them.\n\ | |
3790 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
3791 | then no output is printed when it is hit, except what the commands print."); | |
3792 | ||
3793 | add_com ("condition", class_breakpoint, condition_command, | |
3794 | "Specify breakpoint number N to break only if COND is true.\n\ | |
d3b9c0df JG |
3795 | N is an integer; COND is an expression to be evaluated whenever\n\ |
3796 | breakpoint N is reached. "); | |
bd5635a1 RP |
3797 | |
3798 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
3799 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c4de6b30 JK |
3800 | Like \"break\" except the breakpoint is only temporary,\n\ |
3801 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
3802 | by using \"enable delete\" on the breakpoint number."); | |
bd5635a1 | 3803 | |
11054881 KH |
3804 | add_com ("hbreak", class_breakpoint, hbreak_command, |
3805 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3806 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
3807 | some target hardware may not have this support."); | |
3808 | ||
3809 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
3810 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3811 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
3812 | so it will be deleted when hit."); | |
3813 | ||
bd5635a1 RP |
3814 | add_prefix_cmd ("enable", class_breakpoint, enable_command, |
3815 | "Enable some breakpoints.\n\ | |
3816 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3817 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
3818 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3819 | With a subcommand you can enable temporarily.", | |
3820 | &enablelist, "enable ", 1, &cmdlist); | |
3821 | ||
3822 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
3823 | "Enable some breakpoints.\n\ | |
3824 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3825 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3826 | May be abbreviated to simply \"enable\".\n", | |
3827 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); | |
3828 | ||
3829 | add_cmd ("once", no_class, enable_once_command, | |
3830 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3831 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3832 | &enablebreaklist); |
3833 | ||
3834 | add_cmd ("delete", no_class, enable_delete_command, | |
3835 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3836 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3837 | &enablebreaklist); | |
3838 | ||
3839 | add_cmd ("delete", no_class, enable_delete_command, | |
3840 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3841 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3842 | &enablelist); | |
3843 | ||
3844 | add_cmd ("once", no_class, enable_once_command, | |
3845 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3846 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3847 | &enablelist); |
3848 | ||
3849 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
3850 | "Disable some breakpoints.\n\ | |
3851 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3852 | To disable all breakpoints, give no argument.\n\ | |
3853 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
3854 | &disablelist, "disable ", 1, &cmdlist); | |
3855 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
3856 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
3857 | ||
3858 | add_cmd ("breakpoints", class_alias, disable_command, | |
3859 | "Disable some breakpoints.\n\ | |
3860 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3861 | To disable all breakpoints, give no argument.\n\ | |
3862 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
3863 | This command may be abbreviated \"disable\".", | |
3864 | &disablelist); | |
3865 | ||
3866 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
3867 | "Delete some breakpoints or auto-display expressions.\n\ | |
3868 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3869 | To delete all breakpoints, give no argument.\n\ | |
3870 | \n\ | |
3871 | Also a prefix command for deletion of other GDB objects.\n\ | |
3872 | The \"unset\" command is also an alias for \"delete\".", | |
3873 | &deletelist, "delete ", 1, &cmdlist); | |
3874 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
bd5635a1 RP |
3875 | |
3876 | add_cmd ("breakpoints", class_alias, delete_command, | |
3877 | "Delete some breakpoints or auto-display expressions.\n\ | |
3878 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3879 | To delete all breakpoints, give no argument.\n\ | |
3880 | This command may be abbreviated \"delete\".", | |
3881 | &deletelist); | |
3882 | ||
3883 | add_com ("clear", class_breakpoint, clear_command, | |
3884 | "Clear breakpoint at specified line or function.\n\ | |
3885 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
3886 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
3887 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
3888 | If an address is specified, breakpoints at that address are cleared.\n\n\ | |
3889 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
3890 | is executing in.\n\ | |
3891 | \n\ | |
3892 | See also the \"delete\" command which clears breakpoints by number."); | |
3893 | ||
3894 | add_com ("break", class_breakpoint, break_command, | |
3895 | "Set breakpoint at specified line or function.\n\ | |
3896 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
3897 | If line number is specified, break at start of code for that line.\n\ | |
3898 | If function is specified, break at start of code for that function.\n\ | |
3899 | If an address is specified, break at that exact address.\n\ | |
3900 | With no arg, uses current execution address of selected stack frame.\n\ | |
3901 | This is useful for breaking on return to a stack frame.\n\ | |
3902 | \n\ | |
3903 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
3904 | \n\ | |
3905 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
3906 | add_com_alias ("b", "break", class_run, 1); | |
3907 | add_com_alias ("br", "break", class_run, 1); | |
3908 | add_com_alias ("bre", "break", class_run, 1); | |
3909 | add_com_alias ("brea", "break", class_run, 1); | |
3910 | ||
3911 | add_info ("breakpoints", breakpoints_info, | |
80ba48f5 SG |
3912 | "Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
3913 | The \"Type\" column indicates one of:\n\ | |
423e9664 SG |
3914 | \tbreakpoint - normal breakpoint\n\ |
3915 | \twatchpoint - watchpoint\n\ | |
80ba48f5 SG |
3916 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
3917 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
3918 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
3919 | address and file/line number respectively.\n\n\ | |
3920 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
3921 | are set to the address of the last breakpoint listed.\n\n\ | |
3922 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
3923 | breakpoint set."); | |
3924 | ||
9b280a7f JG |
3925 | #if MAINTENANCE_CMDS |
3926 | ||
3927 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, | |
bd5635a1 | 3928 | "Status of all breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 3929 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
3930 | \tbreakpoint - normal breakpoint\n\ |
3931 | \twatchpoint - watchpoint\n\ | |
3932 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
3933 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
3934 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
3935 | \tfinish - internal breakpoint used by the \"finish\" command\n\ | |
80ba48f5 SG |
3936 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
3937 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
3938 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
3939 | address and file/line number respectively.\n\n\ | |
bd5635a1 RP |
3940 | Convenience variable \"$_\" and default examine address for \"x\"\n\ |
3941 | are set to the address of the last breakpoint listed.\n\n\ | |
3942 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
9b280a7f JG |
3943 | breakpoint set.", |
3944 | &maintenanceinfolist); | |
3945 | ||
3946 | #endif /* MAINTENANCE_CMDS */ | |
bd5635a1 RP |
3947 | |
3948 | add_com ("catch", class_breakpoint, catch_command, | |
3949 | "Set breakpoints to catch exceptions that are raised.\n\ | |
3950 | Argument may be a single exception to catch, multiple exceptions\n\ | |
3951 | to catch, or the default exception \"default\". If no arguments\n\ | |
3952 | are given, breakpoints are set at all exception handlers catch clauses\n\ | |
3953 | within the current scope.\n\ | |
3954 | \n\ | |
3955 | A condition specified for the catch applies to all breakpoints set\n\ | |
3956 | with this command\n\ | |
3957 | \n\ | |
3958 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
3959 | ||
3960 | add_com ("watch", class_breakpoint, watch_command, | |
3961 | "Set a watchpoint for an expression.\n\ | |
3962 | A watchpoint stops execution of your program whenever the value of\n\ | |
3963 | an expression changes."); | |
3964 | ||
11054881 KH |
3965 | add_com ("rwatch", class_breakpoint, rwatch_command, |
3966 | "Set a read watchpoint for an expression.\n\ | |
3967 | A watchpoint stops execution of your program whenever the value of\n\ | |
3968 | an expression is read."); | |
3969 | ||
3970 | add_com ("awatch", class_breakpoint, awatch_command, | |
3971 | "Set a watchpoint for an expression.\n\ | |
3972 | A watchpoint stops execution of your program whenever the value of\n\ | |
3973 | an expression is either read or written."); | |
3974 | ||
c8950965 JG |
3975 | add_info ("watchpoints", breakpoints_info, |
3976 | "Synonym for ``info breakpoints''."); | |
bd5635a1 | 3977 | } |
1eeba686 | 3978 | |
2d313932 JK |
3979 | /* OK, when we call objfile_relocate, we need to relocate breakpoints |
3980 | too. breakpoint_re_set is not a good choice--for example, if | |
3981 | addr_string contains just a line number without a file name the | |
3982 | breakpoint might get set in a different file. In general, there is | |
3983 | no need to go all the way back to the user's string (though this might | |
3984 | work if some effort were made to canonicalize it), since symtabs and | |
3985 | everything except addresses are still valid. | |
1eeba686 | 3986 | |
2d313932 JK |
3987 | Probably the best way to solve this is to have each breakpoint save |
3988 | the objfile and the section number that was used to set it (if set | |
3989 | by "*addr", probably it is best to use find_pc_line to get a symtab | |
3990 | and use the objfile and block_line_section for that symtab). Then | |
3991 | objfile_relocate can call fixup_breakpoints with the objfile and | |
3992 | the new_offsets, and it can relocate only the appropriate breakpoints. */ | |
1eeba686 | 3993 | |
2d313932 JK |
3994 | #ifdef IBM6000_TARGET |
3995 | /* But for now, just kludge it based on the concept that before an | |
3996 | objfile is relocated the breakpoint is below 0x10000000, and afterwards | |
3997 | it is higher, so that way we only relocate each breakpoint once. */ | |
1eeba686 | 3998 | |
1eeba686 PB |
3999 | void |
4000 | fixup_breakpoints (low, high, delta) | |
4001 | CORE_ADDR low; | |
4002 | CORE_ADDR high; | |
4003 | CORE_ADDR delta; | |
4004 | { | |
4005 | struct breakpoint *b; | |
1eeba686 PB |
4006 | |
4007 | ALL_BREAKPOINTS (b) | |
4008 | { | |
4009 | if (b->address >= low && b->address <= high) | |
4010 | b->address += delta; | |
4011 | } | |
4012 | } | |
4013 | #endif |