Commit | Line | Data |
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bd5635a1 | 1 | /* Everything about breakpoints, for GDB. |
30875e1c | 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc. |
bd5635a1 RP |
3 | |
4 | This file is part of GDB. | |
5 | ||
bdbd5f50 | 6 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 7 | it under the terms of the GNU General Public License as published by |
bdbd5f50 JG |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
bd5635a1 | 10 | |
bdbd5f50 | 11 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
bdbd5f50 JG |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 19 | |
bd5635a1 | 20 | #include "defs.h" |
1eeba686 | 21 | #include <ctype.h> |
bd5635a1 RP |
22 | #include "symtab.h" |
23 | #include "frame.h" | |
24 | #include "breakpoint.h" | |
30875e1c | 25 | #include "gdbtypes.h" |
bd5635a1 RP |
26 | #include "expression.h" |
27 | #include "gdbcore.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "value.h" | |
30 | #include "ctype.h" | |
31 | #include "command.h" | |
32 | #include "inferior.h" | |
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; | |
11054881 KH |
205 | |
206 | /* Flag indicating extra verbosity for xgdb. */ | |
207 | extern int xgdb_verbose; | |
208 | ||
209 | static void | |
210 | breakpoints_changed () | |
211 | { | |
212 | if (annotation_level > 1) | |
213 | { | |
214 | target_terminal_ours (); | |
215 | printf_unfiltered ("\n\032\032breakpoints-invalid\n"); | |
216 | } | |
217 | } | |
bd5635a1 RP |
218 | \f |
219 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
220 | Advance *PP after the string and any trailing whitespace. | |
221 | ||
222 | Currently the string can either be a number or "$" followed by the name | |
223 | of a convenience variable. Making it an expression wouldn't work well | |
224 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
225 | static int | |
226 | get_number (pp) | |
227 | char **pp; | |
228 | { | |
229 | int retval; | |
230 | char *p = *pp; | |
231 | ||
232 | if (p == NULL) | |
233 | /* Empty line means refer to the last breakpoint. */ | |
234 | return breakpoint_count; | |
235 | else if (*p == '$') | |
236 | { | |
237 | /* Make a copy of the name, so we can null-terminate it | |
238 | to pass to lookup_internalvar(). */ | |
239 | char *varname; | |
240 | char *start = ++p; | |
82a2edfb | 241 | value_ptr val; |
bd5635a1 RP |
242 | |
243 | while (isalnum (*p) || *p == '_') | |
244 | p++; | |
245 | varname = (char *) alloca (p - start + 1); | |
246 | strncpy (varname, start, p - start); | |
247 | varname[p - start] = '\0'; | |
248 | val = value_of_internalvar (lookup_internalvar (varname)); | |
249 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
250 | error ( | |
251 | "Convenience variables used to specify breakpoints must have integer values." | |
252 | ); | |
253 | retval = (int) value_as_long (val); | |
254 | } | |
255 | else | |
256 | { | |
80ba48f5 SG |
257 | if (*p == '-') |
258 | ++p; | |
bd5635a1 RP |
259 | while (*p >= '0' && *p <= '9') |
260 | ++p; | |
261 | if (p == *pp) | |
262 | /* There is no number here. (e.g. "cond a == b"). */ | |
263 | error_no_arg ("breakpoint number"); | |
264 | retval = atoi (*pp); | |
265 | } | |
266 | if (!(isspace (*p) || *p == '\0')) | |
267 | error ("breakpoint number expected"); | |
268 | while (isspace (*p)) | |
269 | p++; | |
270 | *pp = p; | |
271 | return retval; | |
272 | } | |
273 | \f | |
274 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
275 | ||
276 | static void | |
277 | condition_command (arg, from_tty) | |
278 | char *arg; | |
279 | int from_tty; | |
280 | { | |
281 | register struct breakpoint *b; | |
282 | char *p; | |
283 | register int bnum; | |
284 | ||
285 | if (arg == 0) | |
286 | error_no_arg ("breakpoint number"); | |
287 | ||
288 | p = arg; | |
289 | bnum = get_number (&p); | |
290 | ||
291 | ALL_BREAKPOINTS (b) | |
292 | if (b->number == bnum) | |
293 | { | |
294 | if (b->cond) | |
295 | { | |
c8950965 | 296 | free ((PTR)b->cond); |
bd5635a1 RP |
297 | b->cond = 0; |
298 | } | |
299 | if (b->cond_string != NULL) | |
c8950965 | 300 | free ((PTR)b->cond_string); |
bd5635a1 RP |
301 | |
302 | if (*p == 0) | |
303 | { | |
304 | b->cond = 0; | |
305 | b->cond_string = NULL; | |
306 | if (from_tty) | |
423e9664 | 307 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); |
bd5635a1 RP |
308 | } |
309 | else | |
310 | { | |
311 | arg = p; | |
312 | /* I don't know if it matters whether this is the string the user | |
313 | typed in or the decompiled expression. */ | |
314 | b->cond_string = savestring (arg, strlen (arg)); | |
d3b9c0df | 315 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); |
bd5635a1 RP |
316 | if (*arg) |
317 | error ("Junk at end of expression"); | |
318 | } | |
319 | return; | |
320 | } | |
321 | ||
322 | error ("No breakpoint number %d.", bnum); | |
323 | } | |
324 | ||
bdbd5f50 | 325 | /* ARGSUSED */ |
bd5635a1 RP |
326 | static void |
327 | commands_command (arg, from_tty) | |
328 | char *arg; | |
329 | int from_tty; | |
330 | { | |
331 | register struct breakpoint *b; | |
332 | char *p; | |
333 | register int bnum; | |
334 | struct command_line *l; | |
335 | ||
336 | /* If we allowed this, we would have problems with when to | |
337 | free the storage, if we change the commands currently | |
338 | being read from. */ | |
339 | ||
340 | if (executing_breakpoint_commands) | |
341 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
342 | ||
343 | p = arg; | |
344 | bnum = get_number (&p); | |
345 | if (p && *p) | |
346 | error ("Unexpected extra arguments following breakpoint number."); | |
347 | ||
348 | ALL_BREAKPOINTS (b) | |
349 | if (b->number == bnum) | |
350 | { | |
bdbd5f50 | 351 | if (from_tty && input_from_terminal_p ()) |
9b280a7f | 352 | printf_filtered ("Type commands for when breakpoint %d is hit, one per line.\n\ |
bd5635a1 | 353 | End with a line saying just \"end\".\n", bnum); |
bd5635a1 RP |
354 | l = read_command_lines (); |
355 | free_command_lines (&b->commands); | |
356 | b->commands = l; | |
6c803036 | 357 | breakpoints_changed (); |
bd5635a1 RP |
358 | return; |
359 | } | |
360 | error ("No breakpoint number %d.", bnum); | |
361 | } | |
362 | \f | |
31ef19fc JK |
363 | extern int memory_breakpoint_size; /* from mem-break.c */ |
364 | ||
365 | /* Like target_read_memory() but if breakpoints are inserted, return | |
30875e1c SG |
366 | the shadow contents instead of the breakpoints themselves. |
367 | ||
368 | Read "memory data" from whatever target or inferior we have. | |
369 | Returns zero if successful, errno value if not. EIO is used | |
370 | for address out of bounds. If breakpoints are inserted, returns | |
371 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
372 | ||
31ef19fc JK |
373 | int |
374 | read_memory_nobpt (memaddr, myaddr, len) | |
375 | CORE_ADDR memaddr; | |
376 | char *myaddr; | |
377 | unsigned len; | |
378 | { | |
379 | int status; | |
380 | struct breakpoint *b; | |
381 | ||
382 | if (memory_breakpoint_size < 0) | |
5af4f5f6 JK |
383 | /* No breakpoints on this machine. FIXME: This should be |
384 | dependent on the debugging target. Probably want | |
385 | target_insert_breakpoint to return a size, saying how many | |
386 | bytes of the shadow contents are used, or perhaps have | |
387 | something like target_xfer_shadow. */ | |
31ef19fc JK |
388 | return target_read_memory (memaddr, myaddr, len); |
389 | ||
390 | ALL_BREAKPOINTS (b) | |
391 | { | |
999dd04b JL |
392 | if (b->type == bp_watchpoint |
393 | || b->type == bp_hardware_watchpoint | |
11054881 KH |
394 | || b->type == bp_read_watchpoint |
395 | || b->type == bp_access_watchpoint | |
999dd04b | 396 | || !b->inserted) |
31ef19fc JK |
397 | continue; |
398 | else if (b->address + memory_breakpoint_size <= memaddr) | |
399 | /* The breakpoint is entirely before the chunk of memory | |
400 | we are reading. */ | |
401 | continue; | |
402 | else if (b->address >= memaddr + len) | |
403 | /* The breakpoint is entirely after the chunk of memory we | |
404 | are reading. */ | |
405 | continue; | |
406 | else | |
407 | { | |
408 | /* Copy the breakpoint from the shadow contents, and recurse | |
409 | for the things before and after. */ | |
410 | ||
411 | /* Addresses and length of the part of the breakpoint that | |
412 | we need to copy. */ | |
413 | CORE_ADDR membpt = b->address; | |
414 | unsigned int bptlen = memory_breakpoint_size; | |
415 | /* Offset within shadow_contents. */ | |
416 | int bptoffset = 0; | |
417 | ||
418 | if (membpt < memaddr) | |
419 | { | |
420 | /* Only copy the second part of the breakpoint. */ | |
421 | bptlen -= memaddr - membpt; | |
422 | bptoffset = memaddr - membpt; | |
423 | membpt = memaddr; | |
424 | } | |
425 | ||
426 | if (membpt + bptlen > memaddr + len) | |
427 | { | |
428 | /* Only copy the first part of the breakpoint. */ | |
429 | bptlen -= (membpt + bptlen) - (memaddr + len); | |
430 | } | |
431 | ||
4ed3a9ea FF |
432 | memcpy (myaddr + membpt - memaddr, |
433 | b->shadow_contents + bptoffset, bptlen); | |
31ef19fc JK |
434 | |
435 | if (membpt > memaddr) | |
436 | { | |
437 | /* Copy the section of memory before the breakpoint. */ | |
438 | status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr); | |
439 | if (status != 0) | |
440 | return status; | |
441 | } | |
442 | ||
443 | if (membpt + bptlen < memaddr + len) | |
444 | { | |
445 | /* Copy the section of memory after the breakpoint. */ | |
446 | status = read_memory_nobpt | |
447 | (membpt + bptlen, | |
448 | myaddr + membpt + bptlen - memaddr, | |
449 | memaddr + len - (membpt + bptlen)); | |
450 | if (status != 0) | |
451 | return status; | |
452 | } | |
453 | return 0; | |
454 | } | |
455 | } | |
456 | /* Nothing overlaps. Just call read_memory_noerr. */ | |
457 | return target_read_memory (memaddr, myaddr, len); | |
458 | } | |
459 | \f | |
bd5635a1 RP |
460 | /* insert_breakpoints is used when starting or continuing the program. |
461 | remove_breakpoints is used when the program stops. | |
462 | Both return zero if successful, | |
463 | or an `errno' value if could not write the inferior. */ | |
464 | ||
465 | int | |
466 | insert_breakpoints () | |
467 | { | |
468 | register struct breakpoint *b; | |
469 | int val = 0; | |
470 | int disabled_breaks = 0; | |
471 | ||
472 | ALL_BREAKPOINTS (b) | |
30875e1c | 473 | if (b->type != bp_watchpoint |
999dd04b | 474 | && b->type != bp_hardware_watchpoint |
11054881 KH |
475 | && b->type != bp_read_watchpoint |
476 | && b->type != bp_access_watchpoint | |
bd5635a1 RP |
477 | && b->enable != disabled |
478 | && ! b->inserted | |
479 | && ! b->duplicate) | |
480 | { | |
11054881 KH |
481 | if (b->type == bp_hardware_breakpoint) |
482 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
483 | else | |
484 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
bd5635a1 RP |
485 | if (val) |
486 | { | |
487 | /* Can't set the breakpoint. */ | |
488 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
489 | if (DISABLE_UNSETTABLE_BREAK (b->address)) | |
490 | { | |
491 | val = 0; | |
492 | b->enable = disabled; | |
493 | if (!disabled_breaks) | |
494 | { | |
05052b63 | 495 | target_terminal_ours_for_output (); |
199b2450 | 496 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 497 | "Cannot insert breakpoint %d:\n", b->number); |
bd5635a1 RP |
498 | printf_filtered ("Disabling shared library breakpoints:\n"); |
499 | } | |
500 | disabled_breaks = 1; | |
501 | printf_filtered ("%d ", b->number); | |
502 | } | |
503 | else | |
504 | #endif | |
505 | { | |
05052b63 | 506 | target_terminal_ours_for_output (); |
199b2450 | 507 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
d3b9c0df | 508 | #ifdef ONE_PROCESS_WRITETEXT |
199b2450 | 509 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 510 | "The same program may be running in another process.\n"); |
d3b9c0df | 511 | #endif |
bd5635a1 RP |
512 | memory_error (val, b->address); /* which bombs us out */ |
513 | } | |
514 | } | |
515 | else | |
516 | b->inserted = 1; | |
517 | } | |
11054881 KH |
518 | else if ((b->type == bp_hardware_watchpoint || |
519 | b->type == bp_read_watchpoint || | |
520 | b->type == bp_access_watchpoint) | |
999dd04b JL |
521 | && b->enable == enabled |
522 | && ! b->inserted | |
523 | && ! b->duplicate) | |
524 | { | |
525 | FRAME saved_frame; | |
526 | int saved_level, within_current_scope; | |
527 | value_ptr mark = value_mark (); | |
528 | value_ptr v; | |
529 | ||
530 | /* Save the current frame and level so we can restore it after | |
531 | evaluating the watchpoint expression on its own frame. */ | |
532 | saved_frame = selected_frame; | |
533 | saved_level = selected_frame_level; | |
534 | ||
535 | /* Determine if the watchpoint is within scope. */ | |
536 | if (b->exp_valid_block == NULL) | |
537 | within_current_scope = 1; | |
538 | else | |
539 | { | |
540 | FRAME fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
541 | within_current_scope = (fr != NULL); | |
542 | if (within_current_scope) | |
543 | select_frame (fr, -1); | |
544 | } | |
545 | ||
546 | if (within_current_scope) | |
547 | { | |
548 | /* Evaluate the expression and cut the chain of values | |
549 | produced off from the value chain. */ | |
550 | v = evaluate_expression (b->exp); | |
551 | value_release_to_mark (mark); | |
552 | ||
553 | b->val_chain = v; | |
554 | b->inserted = 1; | |
555 | ||
556 | /* Look at each value on the value chain. */ | |
557 | for ( ; v; v=v->next) | |
558 | { | |
559 | /* If it's a memory location, then we must watch it. */ | |
560 | if (v->lval == lval_memory) | |
561 | { | |
11054881 | 562 | int addr, len, type; |
999dd04b JL |
563 | |
564 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
565 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 KH |
566 | type = 0; |
567 | if (b->type == bp_read_watchpoint) | |
568 | type = 1; | |
569 | else if (b->type == bp_access_watchpoint) | |
570 | type = 2; | |
571 | ||
572 | val = target_insert_watchpoint (addr, len, type); | |
999dd04b JL |
573 | if (val == -1) |
574 | { | |
575 | b->inserted = 0; | |
576 | break; | |
577 | } | |
578 | val = 0; | |
579 | } | |
580 | } | |
581 | /* Failure to insert a watchpoint on any memory value in the | |
582 | value chain brings us here. */ | |
583 | if (!b->inserted) | |
584 | warning ("Hardware watchpoint %d: Could not insert watchpoint\n", | |
585 | b->number); | |
586 | } | |
587 | else | |
588 | { | |
589 | printf_filtered ("\ | |
590 | Hardware watchpoint %d deleted because the program has left the block in\n\ | |
591 | which its expression is valid.\n", b->number); | |
592 | if (b->related_breakpoint) | |
593 | delete_breakpoint (b->related_breakpoint); | |
594 | delete_breakpoint (b); | |
595 | } | |
596 | ||
597 | /* Restore the frame and level. */ | |
598 | select_frame (saved_frame, saved_level); | |
599 | } | |
bd5635a1 RP |
600 | if (disabled_breaks) |
601 | printf_filtered ("\n"); | |
602 | return val; | |
603 | } | |
604 | ||
999dd04b | 605 | |
bd5635a1 RP |
606 | int |
607 | remove_breakpoints () | |
608 | { | |
609 | register struct breakpoint *b; | |
610 | int val; | |
611 | ||
bd5635a1 | 612 | ALL_BREAKPOINTS (b) |
999dd04b JL |
613 | { |
614 | if (b->inserted) | |
615 | { | |
616 | val = remove_breakpoint (b); | |
617 | if (val != 0) | |
618 | return val; | |
619 | } | |
620 | } | |
621 | return 0; | |
622 | } | |
bd5635a1 | 623 | |
999dd04b JL |
624 | |
625 | static int | |
626 | remove_breakpoint (b) | |
627 | struct breakpoint *b; | |
628 | { | |
629 | int val; | |
630 | ||
631 | if (b->type != bp_watchpoint | |
11054881 KH |
632 | && b->type != bp_hardware_watchpoint |
633 | && b->type != bp_read_watchpoint | |
634 | && b->type != bp_access_watchpoint) | |
999dd04b | 635 | { |
11054881 KH |
636 | if (b->type == bp_hardware_breakpoint) |
637 | val = target_remove_hw_breakpoint(b->address, b->shadow_contents); | |
638 | else | |
639 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
999dd04b JL |
640 | if (val) |
641 | return val; | |
642 | b->inserted = 0; | |
643 | } | |
11054881 KH |
644 | else if ((b->type == bp_hardware_watchpoint || |
645 | b->type == bp_read_watchpoint || | |
646 | b->type == bp_access_watchpoint) | |
999dd04b JL |
647 | && b->enable == enabled |
648 | && ! b->duplicate) | |
649 | { | |
650 | value_ptr v, n; | |
651 | ||
652 | b->inserted = 0; | |
653 | /* Walk down the saved value chain. */ | |
654 | for (v = b->val_chain; v; v = v->next) | |
655 | { | |
656 | /* For each memory reference remove the watchpoint | |
657 | at that address. */ | |
658 | if (v->lval == lval_memory) | |
659 | { | |
660 | int addr, len; | |
661 | ||
662 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
663 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 | 664 | val = target_remove_watchpoint (addr, len, b->type); |
999dd04b JL |
665 | if (val == -1) |
666 | b->inserted = 1; | |
667 | val = 0; | |
668 | } | |
669 | } | |
670 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
671 | if (b->inserted) | |
672 | error ("Hardware watchpoint %d: Could not remove watchpoint\n", | |
673 | b->number); | |
674 | ||
675 | /* Free the saved value chain. We will construct a new one | |
676 | the next time the watchpoint is inserted. */ | |
677 | for (v = b->val_chain; v; v = n) | |
678 | { | |
679 | n = v->next; | |
680 | value_free (v); | |
681 | } | |
682 | b->val_chain = NULL; | |
683 | } | |
bd5635a1 RP |
684 | return 0; |
685 | } | |
686 | ||
cf3e377e | 687 | /* Clear the "inserted" flag in all breakpoints. */ |
bd5635a1 RP |
688 | |
689 | void | |
690 | mark_breakpoints_out () | |
691 | { | |
692 | register struct breakpoint *b; | |
693 | ||
694 | ALL_BREAKPOINTS (b) | |
695 | b->inserted = 0; | |
696 | } | |
697 | ||
cf3e377e JK |
698 | /* Clear the "inserted" flag in all breakpoints and delete any breakpoints |
699 | which should go away between runs of the program. */ | |
700 | ||
701 | void | |
702 | breakpoint_init_inferior () | |
703 | { | |
704 | register struct breakpoint *b, *temp; | |
705 | ||
706 | ALL_BREAKPOINTS_SAFE (b, temp) | |
707 | { | |
708 | b->inserted = 0; | |
709 | ||
710 | /* If the call dummy breakpoint is at the entry point it will | |
711 | cause problems when the inferior is rerun, so we better | |
712 | get rid of it. */ | |
713 | if (b->type == bp_call_dummy) | |
714 | delete_breakpoint (b); | |
999dd04b JL |
715 | |
716 | /* Likewise for scope breakpoints. */ | |
717 | if (b->type == bp_watchpoint_scope) | |
718 | delete_breakpoint (b); | |
719 | ||
720 | /* Likewise for watchpoints on local expressions. */ | |
11054881 KH |
721 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint || |
722 | b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) | |
999dd04b JL |
723 | && b->exp_valid_block != NULL) |
724 | delete_breakpoint (b); | |
cf3e377e JK |
725 | } |
726 | } | |
727 | ||
bd5635a1 RP |
728 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. |
729 | When continuing from a location with a breakpoint, | |
730 | we actually single step once before calling insert_breakpoints. */ | |
731 | ||
732 | int | |
733 | breakpoint_here_p (pc) | |
734 | CORE_ADDR pc; | |
735 | { | |
736 | register struct breakpoint *b; | |
737 | ||
738 | ALL_BREAKPOINTS (b) | |
739 | if (b->enable != disabled && b->address == pc) | |
740 | return 1; | |
741 | ||
742 | return 0; | |
743 | } | |
199b2450 | 744 | |
05052b63 JK |
745 | /* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY |
746 | because figuring out the saved SP would take too much time, at least using | |
747 | get_saved_register on the 68k. This means that for this function to | |
748 | work right a port must use the bp_call_dummy breakpoint. */ | |
749 | ||
750 | int | |
751 | frame_in_dummy (frame) | |
752 | FRAME frame; | |
753 | { | |
754 | struct breakpoint *b; | |
755 | ||
d7e7e851 | 756 | #ifdef CALL_DUMMY |
05052b63 JK |
757 | ALL_BREAKPOINTS (b) |
758 | { | |
d7e7e851 JK |
759 | static unsigned LONGEST dummy[] = CALL_DUMMY; |
760 | ||
05052b63 | 761 | if (b->type == bp_call_dummy |
d7e7e851 JK |
762 | && b->frame == frame->frame |
763 | ||
764 | /* We need to check the PC as well as the frame on the sparc, | |
765 | for signals.exp in the testsuite. */ | |
766 | && (frame->pc | |
767 | >= (b->address | |
768 | - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE)) | |
769 | && frame->pc <= b->address) | |
05052b63 JK |
770 | return 1; |
771 | } | |
d7e7e851 | 772 | #endif /* CALL_DUMMY */ |
05052b63 JK |
773 | return 0; |
774 | } | |
775 | ||
199b2450 TL |
776 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC |
777 | is valid for process/thread PID. */ | |
778 | ||
779 | int | |
780 | breakpoint_thread_match (pc, pid) | |
781 | CORE_ADDR pc; | |
782 | int pid; | |
783 | { | |
784 | struct breakpoint *b; | |
785 | int thread; | |
786 | ||
787 | thread = pid_to_thread_id (pid); | |
788 | ||
789 | ALL_BREAKPOINTS (b) | |
790 | if (b->enable != disabled | |
791 | && b->address == pc | |
792 | && (b->thread == -1 || b->thread == thread)) | |
793 | return 1; | |
794 | ||
795 | return 0; | |
796 | } | |
797 | ||
bd5635a1 RP |
798 | \f |
799 | /* bpstat stuff. External routines' interfaces are documented | |
800 | in breakpoint.h. */ | |
30875e1c SG |
801 | |
802 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
803 | Also free any storage that is part of a bpstat. */ | |
804 | ||
bd5635a1 RP |
805 | void |
806 | bpstat_clear (bsp) | |
807 | bpstat *bsp; | |
808 | { | |
809 | bpstat p; | |
810 | bpstat q; | |
811 | ||
812 | if (bsp == 0) | |
813 | return; | |
814 | p = *bsp; | |
815 | while (p != NULL) | |
816 | { | |
817 | q = p->next; | |
818 | if (p->old_val != NULL) | |
819 | value_free (p->old_val); | |
c8950965 | 820 | free ((PTR)p); |
bd5635a1 RP |
821 | p = q; |
822 | } | |
823 | *bsp = NULL; | |
824 | } | |
825 | ||
30875e1c SG |
826 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
827 | is part of the bpstat is copied as well. */ | |
828 | ||
bd5635a1 RP |
829 | bpstat |
830 | bpstat_copy (bs) | |
831 | bpstat bs; | |
832 | { | |
833 | bpstat p = NULL; | |
834 | bpstat tmp; | |
fee933f1 | 835 | bpstat retval = NULL; |
bd5635a1 RP |
836 | |
837 | if (bs == NULL) | |
838 | return bs; | |
839 | ||
840 | for (; bs != NULL; bs = bs->next) | |
841 | { | |
842 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4ed3a9ea | 843 | memcpy (tmp, bs, sizeof (*tmp)); |
bd5635a1 RP |
844 | if (p == NULL) |
845 | /* This is the first thing in the chain. */ | |
846 | retval = tmp; | |
847 | else | |
848 | p->next = tmp; | |
849 | p = tmp; | |
850 | } | |
851 | p->next = NULL; | |
852 | return retval; | |
853 | } | |
854 | ||
30875e1c SG |
855 | /* Find the bpstat associated with this breakpoint */ |
856 | ||
857 | bpstat | |
858 | bpstat_find_breakpoint(bsp, breakpoint) | |
859 | bpstat bsp; | |
860 | struct breakpoint *breakpoint; | |
861 | { | |
862 | if (bsp == NULL) return NULL; | |
863 | ||
864 | for (;bsp != NULL; bsp = bsp->next) { | |
865 | if (bsp->breakpoint_at == breakpoint) return bsp; | |
866 | } | |
867 | return NULL; | |
868 | } | |
869 | ||
870 | /* Return the breakpoint number of the first breakpoint we are stopped | |
871 | at. *BSP upon return is a bpstat which points to the remaining | |
872 | breakpoints stopped at (but which is not guaranteed to be good for | |
873 | anything but further calls to bpstat_num). | |
874 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
875 | ||
bd5635a1 RP |
876 | int |
877 | bpstat_num (bsp) | |
878 | bpstat *bsp; | |
879 | { | |
880 | struct breakpoint *b; | |
881 | ||
882 | if ((*bsp) == NULL) | |
883 | return 0; /* No more breakpoint values */ | |
884 | else | |
885 | { | |
886 | b = (*bsp)->breakpoint_at; | |
887 | *bsp = (*bsp)->next; | |
888 | if (b == NULL) | |
889 | return -1; /* breakpoint that's been deleted since */ | |
890 | else | |
891 | return b->number; /* We have its number */ | |
892 | } | |
893 | } | |
894 | ||
30875e1c SG |
895 | /* Modify BS so that the actions will not be performed. */ |
896 | ||
bd5635a1 RP |
897 | void |
898 | bpstat_clear_actions (bs) | |
899 | bpstat bs; | |
900 | { | |
901 | for (; bs != NULL; bs = bs->next) | |
902 | { | |
903 | bs->commands = NULL; | |
904 | if (bs->old_val != NULL) | |
905 | { | |
906 | value_free (bs->old_val); | |
907 | bs->old_val = NULL; | |
908 | } | |
909 | } | |
910 | } | |
911 | ||
bdbd5f50 JG |
912 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
913 | /* ARGSUSED */ | |
914 | static void | |
915 | cleanup_executing_breakpoints (ignore) | |
916 | int ignore; | |
917 | { | |
918 | executing_breakpoint_commands = 0; | |
919 | } | |
920 | ||
bd5635a1 RP |
921 | /* Execute all the commands associated with all the breakpoints at this |
922 | location. Any of these commands could cause the process to proceed | |
923 | beyond this point, etc. We look out for such changes by checking | |
924 | the global "breakpoint_proceeded" after each command. */ | |
30875e1c | 925 | |
bd5635a1 RP |
926 | void |
927 | bpstat_do_actions (bsp) | |
928 | bpstat *bsp; | |
929 | { | |
930 | bpstat bs; | |
bdbd5f50 JG |
931 | struct cleanup *old_chain; |
932 | ||
933 | executing_breakpoint_commands = 1; | |
934 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
bd5635a1 RP |
935 | |
936 | top: | |
937 | bs = *bsp; | |
938 | ||
bd5635a1 RP |
939 | breakpoint_proceeded = 0; |
940 | for (; bs != NULL; bs = bs->next) | |
941 | { | |
942 | while (bs->commands) | |
943 | { | |
944 | char *line = bs->commands->line; | |
945 | bs->commands = bs->commands->next; | |
946 | execute_command (line, 0); | |
947 | /* If the inferior is proceeded by the command, bomb out now. | |
948 | The bpstat chain has been blown away by wait_for_inferior. | |
949 | But since execution has stopped again, there is a new bpstat | |
950 | to look at, so start over. */ | |
951 | if (breakpoint_proceeded) | |
952 | goto top; | |
953 | } | |
954 | } | |
bd5635a1 RP |
955 | |
956 | executing_breakpoint_commands = 0; | |
bdbd5f50 | 957 | discard_cleanups (old_chain); |
bd5635a1 RP |
958 | } |
959 | ||
8af68e4e JK |
960 | /* This is the normal print_it function for a bpstat. In the future, |
961 | much of this logic could (should?) be moved to bpstat_stop_status, | |
962 | by having it set different print_it functions. */ | |
30875e1c | 963 | |
8af68e4e JK |
964 | static int |
965 | print_it_normal (bs) | |
bd5635a1 RP |
966 | bpstat bs; |
967 | { | |
968 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
969 | which has since been deleted. */ | |
8af68e4e | 970 | if (bs->breakpoint_at == NULL |
30875e1c | 971 | || (bs->breakpoint_at->type != bp_breakpoint |
11054881 | 972 | && bs->breakpoint_at->type != bp_hardware_breakpoint |
999dd04b | 973 | && bs->breakpoint_at->type != bp_watchpoint |
11054881 KH |
974 | && bs->breakpoint_at->type != bp_read_watchpoint |
975 | && bs->breakpoint_at->type != bp_access_watchpoint | |
999dd04b | 976 | && bs->breakpoint_at->type != bp_hardware_watchpoint)) |
bd5635a1 | 977 | return 0; |
bd5635a1 | 978 | |
11054881 KH |
979 | if (bs->breakpoint_at->type == bp_breakpoint || |
980 | bs->breakpoint_at->type == bp_hardware_breakpoint) | |
bd5635a1 RP |
981 | { |
982 | /* I think the user probably only wants to see one breakpoint | |
983 | number, not all of them. */ | |
984 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); | |
985 | return 0; | |
986 | } | |
11054881 KH |
987 | else if ((bs->old_val != NULL) && |
988 | (bs->breakpoint_at->type == bp_watchpoint || | |
989 | bs->breakpoint_at->type == bp_access_watchpoint || | |
990 | bs->breakpoint_at->type == bp_hardware_watchpoint)) | |
bd5635a1 | 991 | { |
11054881 | 992 | mention (bs->breakpoint_at); |
bd5635a1 | 993 | printf_filtered ("\nOld value = "); |
199b2450 | 994 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); |
bd5635a1 | 995 | printf_filtered ("\nNew value = "); |
199b2450 | 996 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
bd5635a1 RP |
997 | Val_pretty_default); |
998 | printf_filtered ("\n"); | |
999 | value_free (bs->old_val); | |
1000 | bs->old_val = NULL; | |
bd2f0c85 JL |
1001 | /* More than one watchpoint may have been triggered. */ |
1002 | return -1; | |
bd5635a1 | 1003 | } |
11054881 KH |
1004 | else if (bs->breakpoint_at->type == bp_access_watchpoint || |
1005 | bs->breakpoint_at->type == bp_read_watchpoint) | |
1006 | { | |
1007 | mention (bs->breakpoint_at); | |
1008 | printf_filtered ("\nValue = "); | |
1009 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
1010 | Val_pretty_default); | |
1011 | printf_filtered ("\n"); | |
1012 | return -1; | |
1013 | } | |
8af68e4e JK |
1014 | /* We can't deal with it. Maybe another member of the bpstat chain can. */ |
1015 | return -1; | |
1016 | } | |
1017 | ||
1018 | /* Print a message indicating what happened. Returns nonzero to | |
1019 | say that only the source line should be printed after this (zero | |
1020 | return means print the frame as well as the source line). */ | |
3f031adf | 1021 | /* Currently we always return zero. */ |
8af68e4e JK |
1022 | int |
1023 | bpstat_print (bs) | |
1024 | bpstat bs; | |
1025 | { | |
1026 | int val; | |
1027 | ||
1028 | if (bs == NULL) | |
1029 | return 0; | |
bd5635a1 | 1030 | |
8af68e4e JK |
1031 | val = (*bs->print_it) (bs); |
1032 | if (val >= 0) | |
1033 | return val; | |
1034 | ||
fcb887ff JK |
1035 | /* Maybe another breakpoint in the chain caused us to stop. |
1036 | (Currently all watchpoints go on the bpstat whether hit or | |
1037 | not. That probably could (should) be changed, provided care is taken | |
1038 | with respect to bpstat_explains_signal). */ | |
1039 | if (bs->next) | |
1040 | return bpstat_print (bs->next); | |
1041 | ||
cabd4da6 | 1042 | /* We reached the end of the chain without printing anything. */ |
bd5635a1 RP |
1043 | return 0; |
1044 | } | |
1045 | ||
1046 | /* Evaluate the expression EXP and return 1 if value is zero. | |
1047 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
bdbd5f50 | 1048 | The argument is a "struct expression *" that has been cast to char * to |
bd5635a1 RP |
1049 | make it pass through catch_errors. */ |
1050 | ||
1051 | static int | |
1052 | breakpoint_cond_eval (exp) | |
bdbd5f50 | 1053 | char *exp; |
bd5635a1 | 1054 | { |
11054881 KH |
1055 | value_ptr mark = value_mark (); |
1056 | int i = !value_true (evaluate_expression ((struct expression *)exp)); | |
1057 | value_free_to_mark (mark); | |
1058 | return i; | |
bd5635a1 RP |
1059 | } |
1060 | ||
1061 | /* Allocate a new bpstat and chain it to the current one. */ | |
1062 | ||
1063 | static bpstat | |
1064 | bpstat_alloc (b, cbs) | |
1065 | register struct breakpoint *b; | |
1066 | bpstat cbs; /* Current "bs" value */ | |
1067 | { | |
1068 | bpstat bs; | |
1069 | ||
1070 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
1071 | cbs->next = bs; | |
1072 | bs->breakpoint_at = b; | |
1073 | /* If the condition is false, etc., don't do the commands. */ | |
1074 | bs->commands = NULL; | |
bd5635a1 | 1075 | bs->old_val = NULL; |
8af68e4e | 1076 | bs->print_it = print_it_normal; |
bd5635a1 RP |
1077 | return bs; |
1078 | } | |
fa99ebe1 | 1079 | \f |
999dd04b | 1080 | |
bd5635a1 | 1081 | |
8af68e4e JK |
1082 | /* Possible return values for watchpoint_check (this can't be an enum |
1083 | because of check_errors). */ | |
999dd04b JL |
1084 | /* The watchpoint has been deleted. */ |
1085 | #define WP_DELETED 1 | |
8af68e4e JK |
1086 | /* The value has changed. */ |
1087 | #define WP_VALUE_CHANGED 2 | |
1088 | /* The value has not changed. */ | |
1089 | #define WP_VALUE_NOT_CHANGED 3 | |
1090 | ||
1091 | /* Check watchpoint condition. */ | |
1092 | static int | |
1093 | watchpoint_check (p) | |
fe675038 | 1094 | char *p; |
8af68e4e JK |
1095 | { |
1096 | bpstat bs = (bpstat) p; | |
11054881 | 1097 | struct breakpoint *b; |
999dd04b JL |
1098 | FRAME saved_frame, fr; |
1099 | int within_current_scope, saved_level; | |
1100 | ||
1101 | /* Save the current frame and level so we can restore it after | |
1102 | evaluating the watchpoint expression on its own frame. */ | |
1103 | saved_frame = selected_frame; | |
1104 | saved_level = selected_frame_level; | |
8af68e4e | 1105 | |
fa99ebe1 | 1106 | if (bs->breakpoint_at->exp_valid_block == NULL) |
8af68e4e | 1107 | within_current_scope = 1; |
fa99ebe1 JK |
1108 | else |
1109 | { | |
999dd04b JL |
1110 | fr = find_frame_addr_in_frame_chain (bs->breakpoint_at->watchpoint_frame); |
1111 | within_current_scope = (fr != NULL); | |
fa99ebe1 JK |
1112 | if (within_current_scope) |
1113 | /* If we end up stopping, the current frame will get selected | |
1114 | in normal_stop. So this call to select_frame won't affect | |
1115 | the user. */ | |
1116 | select_frame (fr, -1); | |
1117 | } | |
1118 | ||
8af68e4e JK |
1119 | if (within_current_scope) |
1120 | { | |
1121 | /* We use value_{,free_to_}mark because it could be a | |
1122 | *long* time before we return to the command level and | |
cef4c2e7 PS |
1123 | call free_all_values. We can't call free_all_values because |
1124 | we might be in the middle of evaluating a function call. */ | |
8af68e4e | 1125 | |
82a2edfb JK |
1126 | value_ptr mark = value_mark (); |
1127 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
8af68e4e JK |
1128 | if (!value_equal (bs->breakpoint_at->val, new_val)) |
1129 | { | |
1130 | release_value (new_val); | |
1131 | value_free_to_mark (mark); | |
1132 | bs->old_val = bs->breakpoint_at->val; | |
1133 | bs->breakpoint_at->val = new_val; | |
1134 | /* We will stop here */ | |
999dd04b | 1135 | select_frame (saved_frame, saved_level); |
8af68e4e JK |
1136 | return WP_VALUE_CHANGED; |
1137 | } | |
1138 | else | |
1139 | { | |
1140 | /* Nothing changed, don't do anything. */ | |
1141 | value_free_to_mark (mark); | |
1142 | /* We won't stop here */ | |
999dd04b | 1143 | select_frame (saved_frame, saved_level); |
8af68e4e JK |
1144 | return WP_VALUE_NOT_CHANGED; |
1145 | } | |
1146 | } | |
1147 | else | |
1148 | { | |
1149 | /* This seems like the only logical thing to do because | |
1150 | if we temporarily ignored the watchpoint, then when | |
1151 | we reenter the block in which it is valid it contains | |
1152 | garbage (in the case of a function, it may have two | |
1153 | garbage values, one before and one after the prologue). | |
1154 | So we can't even detect the first assignment to it and | |
1155 | watch after that (since the garbage may or may not equal | |
1156 | the first value assigned). */ | |
8af68e4e | 1157 | printf_filtered ("\ |
999dd04b | 1158 | Watchpoint %d deleted because the program has left the block in\n\ |
8af68e4e | 1159 | which its expression is valid.\n", bs->breakpoint_at->number); |
999dd04b JL |
1160 | if (bs->breakpoint_at->related_breakpoint) |
1161 | delete_breakpoint (bs->breakpoint_at->related_breakpoint); | |
1162 | delete_breakpoint (bs->breakpoint_at); | |
1163 | ||
1164 | select_frame (saved_frame, saved_level); | |
1165 | return WP_DELETED; | |
8af68e4e JK |
1166 | } |
1167 | } | |
1168 | ||
1169 | /* This is used when everything which needs to be printed has | |
1170 | already been printed. But we still want to print the frame. */ | |
1171 | static int | |
cabd4da6 | 1172 | print_it_done (bs) |
8af68e4e JK |
1173 | bpstat bs; |
1174 | { | |
1175 | return 0; | |
1176 | } | |
1177 | ||
cabd4da6 JK |
1178 | /* This is used when nothing should be printed for this bpstat entry. */ |
1179 | ||
1180 | static int | |
1181 | print_it_noop (bs) | |
1182 | bpstat bs; | |
1183 | { | |
1184 | return -1; | |
1185 | } | |
1186 | ||
cb6b0202 JK |
1187 | /* Get a bpstat associated with having just stopped at address *PC |
1188 | and frame address FRAME_ADDRESS. Update *PC to point at the | |
1189 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
1190 | if this is known to not be a real breakpoint (it could still be a | |
1191 | watchpoint, though). */ | |
1192 | ||
bd5635a1 RP |
1193 | /* Determine whether we stopped at a breakpoint, etc, or whether we |
1194 | don't understand this stop. Result is a chain of bpstat's such that: | |
1195 | ||
1196 | if we don't understand the stop, the result is a null pointer. | |
1197 | ||
cb6b0202 | 1198 | if we understand why we stopped, the result is not null. |
bd5635a1 RP |
1199 | |
1200 | Each element of the chain refers to a particular breakpoint or | |
1201 | watchpoint at which we have stopped. (We may have stopped for | |
2d313932 | 1202 | several reasons concurrently.) |
bd5635a1 RP |
1203 | |
1204 | Each element of the chain has valid next, breakpoint_at, | |
1205 | commands, FIXME??? fields. | |
1206 | ||
1207 | */ | |
1208 | ||
bd5635a1 | 1209 | bpstat |
cb6b0202 | 1210 | bpstat_stop_status (pc, frame_address, not_a_breakpoint) |
bd5635a1 RP |
1211 | CORE_ADDR *pc; |
1212 | FRAME_ADDR frame_address; | |
cb6b0202 | 1213 | int not_a_breakpoint; |
bd5635a1 RP |
1214 | { |
1215 | register struct breakpoint *b; | |
bd5635a1 | 1216 | CORE_ADDR bp_addr; |
bdbd5f50 | 1217 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1218 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
1219 | int real_breakpoint = 0; | |
bdbd5f50 | 1220 | #endif |
bd5635a1 | 1221 | /* Root of the chain of bpstat's */ |
cba0d141 | 1222 | struct bpstat root_bs[1]; |
bd5635a1 RP |
1223 | /* Pointer to the last thing in the chain currently. */ |
1224 | bpstat bs = root_bs; | |
11054881 KH |
1225 | static char message1[] = |
1226 | "Error evaluating expression for watchpoint %d\n"; | |
1227 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 RP |
1228 | |
1229 | /* Get the address where the breakpoint would have been. */ | |
1230 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
1231 | ||
1232 | ALL_BREAKPOINTS (b) | |
1233 | { | |
bd5635a1 RP |
1234 | if (b->enable == disabled) |
1235 | continue; | |
30875e1c | 1236 | |
999dd04b JL |
1237 | if (b->type != bp_watchpoint |
1238 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1239 | && b->type != bp_read_watchpoint |
1240 | && b->type != bp_access_watchpoint | |
1241 | && b->type != bp_hardware_breakpoint | |
999dd04b | 1242 | && b->address != bp_addr) |
bd5635a1 RP |
1243 | continue; |
1244 | ||
11054881 KH |
1245 | #ifndef DECR_PC_AFTER_HW_BREAK |
1246 | #define DECR_PC_AFTER_HW_BREAK 0 | |
1247 | #endif | |
1248 | if (b->type == bp_hardware_breakpoint | |
1249 | && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK)) | |
1250 | continue; | |
1251 | ||
999dd04b JL |
1252 | if (b->type != bp_watchpoint |
1253 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1254 | && b->type != bp_read_watchpoint |
1255 | && b->type != bp_access_watchpoint | |
999dd04b | 1256 | && not_a_breakpoint) |
cb6b0202 JK |
1257 | continue; |
1258 | ||
30875e1c SG |
1259 | /* Come here if it's a watchpoint, or if the break address matches */ |
1260 | ||
bd5635a1 RP |
1261 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ |
1262 | ||
cabd4da6 JK |
1263 | bs->stop = 1; |
1264 | bs->print = 1; | |
bd5635a1 | 1265 | |
11054881 | 1266 | sprintf (message, message1, b->number); |
999dd04b | 1267 | if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) |
bd5635a1 | 1268 | { |
fe675038 JK |
1269 | switch (catch_errors (watchpoint_check, (char *) bs, message, |
1270 | RETURN_MASK_ALL)) | |
bd5635a1 | 1271 | { |
999dd04b | 1272 | case WP_DELETED: |
8af68e4e | 1273 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1274 | bs->print_it = print_it_done; |
8af68e4e JK |
1275 | /* Stop. */ |
1276 | break; | |
1277 | case WP_VALUE_CHANGED: | |
1278 | /* Stop. */ | |
1279 | break; | |
1280 | case WP_VALUE_NOT_CHANGED: | |
1281 | /* Don't stop. */ | |
cabd4da6 JK |
1282 | bs->print_it = print_it_noop; |
1283 | bs->stop = 0; | |
bd5635a1 | 1284 | continue; |
8af68e4e JK |
1285 | default: |
1286 | /* Can't happen. */ | |
1287 | /* FALLTHROUGH */ | |
1288 | case 0: | |
1289 | /* Error from catch_errors. */ | |
999dd04b JL |
1290 | printf_filtered ("Watchpoint %d deleted.\n", b->number); |
1291 | if (b->related_breakpoint) | |
1292 | delete_breakpoint (b->related_breakpoint); | |
1293 | delete_breakpoint (b); | |
8af68e4e | 1294 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1295 | bs->print_it = print_it_done; |
999dd04b | 1296 | |
8af68e4e JK |
1297 | /* Stop. */ |
1298 | break; | |
bd5635a1 RP |
1299 | } |
1300 | } | |
11054881 KH |
1301 | else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) |
1302 | { | |
1303 | CORE_ADDR addr; | |
1304 | value_ptr v; | |
1305 | int found = 0; | |
1306 | ||
1307 | addr = target_stopped_data_address(); | |
1308 | if (addr == 0) continue; | |
1309 | for (v = b->val_chain; v; v = v->next) | |
1310 | { | |
1311 | if (v->lval == lval_memory) | |
1312 | { | |
1313 | CORE_ADDR vaddr; | |
1314 | ||
1315 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1316 | if (addr == vaddr) | |
1317 | found = 1; | |
1318 | } | |
1319 | } | |
1320 | if (found) | |
1321 | switch (catch_errors (watchpoint_check, (char *) bs, message, | |
1322 | RETURN_MASK_ALL)) | |
1323 | { | |
1324 | case WP_DELETED: | |
1325 | /* We've already printed what needs to be printed. */ | |
1326 | bs->print_it = print_it_done; | |
1327 | /* Stop. */ | |
1328 | break; | |
1329 | case WP_VALUE_CHANGED: | |
1330 | case WP_VALUE_NOT_CHANGED: | |
1331 | /* Stop. */ | |
1332 | break; | |
1333 | default: | |
1334 | /* Can't happen. */ | |
1335 | case 0: | |
1336 | /* Error from catch_errors. */ | |
1337 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
1338 | if (b->related_breakpoint) | |
1339 | delete_breakpoint (b->related_breakpoint); | |
1340 | delete_breakpoint (b); | |
1341 | /* We've already printed what needs to be printed. */ | |
1342 | bs->print_it = print_it_done; | |
1343 | break; | |
1344 | } | |
1345 | } | |
bdbd5f50 | 1346 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1347 | else |
1348 | real_breakpoint = 1; | |
bdbd5f50 | 1349 | #endif |
bd5635a1 RP |
1350 | |
1351 | if (b->frame && b->frame != frame_address) | |
cabd4da6 | 1352 | bs->stop = 0; |
bd5635a1 RP |
1353 | else |
1354 | { | |
fee933f1 | 1355 | int value_is_zero = 0; |
bd5635a1 RP |
1356 | |
1357 | if (b->cond) | |
1358 | { | |
1359 | /* Need to select the frame, with all that implies | |
1360 | so that the conditions will have the right context. */ | |
1361 | select_frame (get_current_frame (), 0); | |
bdbd5f50 JG |
1362 | value_is_zero |
1363 | = catch_errors (breakpoint_cond_eval, (char *)(b->cond), | |
fe675038 JK |
1364 | "Error in testing breakpoint condition:\n", |
1365 | RETURN_MASK_ALL); | |
06b6c733 | 1366 | /* FIXME-someday, should give breakpoint # */ |
bd5635a1 RP |
1367 | free_all_values (); |
1368 | } | |
bdbd5f50 | 1369 | if (b->cond && value_is_zero) |
bd5635a1 | 1370 | { |
cabd4da6 | 1371 | bs->stop = 0; |
bd5635a1 RP |
1372 | } |
1373 | else if (b->ignore_count > 0) | |
1374 | { | |
1375 | b->ignore_count--; | |
cabd4da6 | 1376 | bs->stop = 0; |
bd5635a1 RP |
1377 | } |
1378 | else | |
1379 | { | |
1380 | /* We will stop here */ | |
30875e1c | 1381 | if (b->disposition == disable) |
bd5635a1 RP |
1382 | b->enable = disabled; |
1383 | bs->commands = b->commands; | |
1384 | if (b->silent) | |
cabd4da6 | 1385 | bs->print = 0; |
2d313932 | 1386 | if (bs->commands && STREQ ("silent", bs->commands->line)) |
bd5635a1 RP |
1387 | { |
1388 | bs->commands = bs->commands->next; | |
cabd4da6 | 1389 | bs->print = 0; |
bd5635a1 RP |
1390 | } |
1391 | } | |
1392 | } | |
cabd4da6 JK |
1393 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
1394 | if (bs->stop == 0 || bs->print == 0) | |
1395 | bs->print_it = print_it_noop; | |
bd5635a1 RP |
1396 | } |
1397 | ||
1398 | bs->next = NULL; /* Terminate the chain */ | |
1399 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
cabd4da6 | 1400 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1401 | if (bs) |
1402 | { | |
bd5635a1 RP |
1403 | if (real_breakpoint) |
1404 | { | |
1405 | *pc = bp_addr; | |
1406 | #if defined (SHIFT_INST_REGS) | |
817ac7f8 | 1407 | SHIFT_INST_REGS(); |
bd5635a1 RP |
1408 | #else /* No SHIFT_INST_REGS. */ |
1409 | write_pc (bp_addr); | |
1410 | #endif /* No SHIFT_INST_REGS. */ | |
1411 | } | |
bd5635a1 | 1412 | } |
cabd4da6 | 1413 | #endif /* DECR_PC_AFTER_BREAK != 0. */ |
999dd04b JL |
1414 | |
1415 | /* The value of a hardware watchpoint hasn't changed, but the | |
1416 | intermediate memory locations we are watching may have. */ | |
11054881 KH |
1417 | if (bs && ! bs->stop && |
1418 | (bs->breakpoint_at->type == bp_hardware_watchpoint || | |
1419 | bs->breakpoint_at->type == bp_read_watchpoint || | |
1420 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
999dd04b JL |
1421 | { |
1422 | remove_breakpoints (); | |
1423 | insert_breakpoints (); | |
1424 | } | |
bd5635a1 RP |
1425 | return bs; |
1426 | } | |
cabd4da6 JK |
1427 | \f |
1428 | /* Tell what to do about this bpstat. */ | |
fe675038 | 1429 | struct bpstat_what |
cabd4da6 JK |
1430 | bpstat_what (bs) |
1431 | bpstat bs; | |
1432 | { | |
1433 | /* Classify each bpstat as one of the following. */ | |
1434 | enum class { | |
fe675038 JK |
1435 | /* This bpstat element has no effect on the main_action. */ |
1436 | no_effect = 0, | |
cabd4da6 JK |
1437 | |
1438 | /* There was a watchpoint, stop but don't print. */ | |
1439 | wp_silent, | |
1440 | ||
1441 | /* There was a watchpoint, stop and print. */ | |
1442 | wp_noisy, | |
1443 | ||
1444 | /* There was a breakpoint but we're not stopping. */ | |
1445 | bp_nostop, | |
1446 | ||
1447 | /* There was a breakpoint, stop but don't print. */ | |
1448 | bp_silent, | |
1449 | ||
1450 | /* There was a breakpoint, stop and print. */ | |
1451 | bp_noisy, | |
1452 | ||
1453 | /* We hit the longjmp breakpoint. */ | |
1454 | long_jump, | |
1455 | ||
1456 | /* We hit the longjmp_resume breakpoint. */ | |
1457 | long_resume, | |
1458 | ||
d7e7e851 JK |
1459 | /* We hit the step_resume breakpoint. */ |
1460 | step_resume, | |
1461 | ||
bcc37718 JK |
1462 | /* We hit the through_sigtramp breakpoint. */ |
1463 | through_sig, | |
1464 | ||
cabd4da6 JK |
1465 | /* This is just used to count how many enums there are. */ |
1466 | class_last | |
1467 | }; | |
1468 | ||
1469 | /* Here is the table which drives this routine. So that we can | |
1470 | format it pretty, we define some abbreviations for the | |
1471 | enum bpstat_what codes. */ | |
1472 | #define keep_c BPSTAT_WHAT_KEEP_CHECKING | |
1473 | #define stop_s BPSTAT_WHAT_STOP_SILENT | |
1474 | #define stop_n BPSTAT_WHAT_STOP_NOISY | |
1475 | #define single BPSTAT_WHAT_SINGLE | |
1476 | #define setlr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
1477 | #define clrlr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
1478 | #define clrlrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
d7e7e851 | 1479 | #define sr BPSTAT_WHAT_STEP_RESUME |
bcc37718 | 1480 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP |
d7e7e851 | 1481 | |
cabd4da6 JK |
1482 | /* "Can't happen." Might want to print an error message. |
1483 | abort() is not out of the question, but chances are GDB is just | |
1484 | a bit confused, not unusable. */ | |
1485 | #define err BPSTAT_WHAT_STOP_NOISY | |
1486 | ||
1487 | /* Given an old action and a class, come up with a new action. */ | |
84d59861 JK |
1488 | /* One interesting property of this table is that wp_silent is the same |
1489 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
1490 | after stopping, the check for whether to step over a breakpoint | |
1491 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
1492 | reference to how we stopped. We retain separate wp_silent and bp_silent | |
1493 | codes in case we want to change that someday. */ | |
d7e7e851 JK |
1494 | |
1495 | /* step_resume entries: a step resume breakpoint overrides another | |
1496 | breakpoint of signal handling (see comment in wait_for_inferior | |
1497 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
bcc37718 JK |
1498 | /* We handle the through_sigtramp_breakpoint the same way; having both |
1499 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
d7e7e851 | 1500 | |
fe675038 | 1501 | static const enum bpstat_what_main_action |
cabd4da6 JK |
1502 | table[(int)class_last][(int)BPSTAT_WHAT_LAST] = |
1503 | { | |
1504 | /* old action */ | |
bcc37718 JK |
1505 | /* keep_c stop_s stop_n single setlr clrlr clrlrs sr ts |
1506 | */ | |
1507 | /*no_effect*/ {keep_c,stop_s,stop_n,single, setlr , clrlr , clrlrs, sr, ts}, | |
1508 | /*wp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts}, | |
1509 | /*wp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts}, | |
1510 | /*bp_nostop*/ {single,stop_s,stop_n,single, setlr , clrlrs, clrlrs, sr, ts}, | |
1511 | /*bp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts}, | |
1512 | /*bp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts}, | |
1513 | /*long_jump*/ {setlr ,stop_s,stop_n,setlr , err , err , err , sr, ts}, | |
1514 | /*long_resume*/ {clrlr ,stop_s,stop_n,clrlrs, err , err , err , sr, ts}, | |
1515 | /*step_resume*/ {sr ,sr ,sr ,sr , sr , sr , sr , sr, ts}, | |
1516 | /*through_sig*/ {ts ,ts ,ts ,ts , ts , ts , ts , ts, ts} | |
cabd4da6 JK |
1517 | }; |
1518 | #undef keep_c | |
1519 | #undef stop_s | |
1520 | #undef stop_n | |
1521 | #undef single | |
1522 | #undef setlr | |
1523 | #undef clrlr | |
1524 | #undef clrlrs | |
1525 | #undef err | |
bcc37718 JK |
1526 | #undef sr |
1527 | #undef ts | |
fe675038 | 1528 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
84d59861 | 1529 | struct bpstat_what retval; |
cabd4da6 | 1530 | |
cef4c2e7 | 1531 | retval.call_dummy = 0; |
cabd4da6 JK |
1532 | for (; bs != NULL; bs = bs->next) |
1533 | { | |
fee933f1 | 1534 | enum class bs_class = no_effect; |
cabd4da6 JK |
1535 | if (bs->breakpoint_at == NULL) |
1536 | /* I suspect this can happen if it was a momentary breakpoint | |
1537 | which has since been deleted. */ | |
1538 | continue; | |
1539 | switch (bs->breakpoint_at->type) | |
1540 | { | |
1541 | case bp_breakpoint: | |
11054881 | 1542 | case bp_hardware_breakpoint: |
cabd4da6 JK |
1543 | case bp_until: |
1544 | case bp_finish: | |
1545 | if (bs->stop) | |
1546 | { | |
1547 | if (bs->print) | |
1548 | bs_class = bp_noisy; | |
1549 | else | |
1550 | bs_class = bp_silent; | |
1551 | } | |
1552 | else | |
1553 | bs_class = bp_nostop; | |
1554 | break; | |
1555 | case bp_watchpoint: | |
999dd04b | 1556 | case bp_hardware_watchpoint: |
11054881 KH |
1557 | case bp_read_watchpoint: |
1558 | case bp_access_watchpoint: | |
cabd4da6 JK |
1559 | if (bs->stop) |
1560 | { | |
1561 | if (bs->print) | |
1562 | bs_class = wp_noisy; | |
1563 | else | |
1564 | bs_class = wp_silent; | |
1565 | } | |
1566 | else | |
fe675038 JK |
1567 | /* There was a watchpoint, but we're not stopping. This requires |
1568 | no further action. */ | |
1569 | bs_class = no_effect; | |
cabd4da6 JK |
1570 | break; |
1571 | case bp_longjmp: | |
1572 | bs_class = long_jump; | |
1573 | break; | |
1574 | case bp_longjmp_resume: | |
1575 | bs_class = long_resume; | |
1576 | break; | |
fe675038 | 1577 | case bp_step_resume: |
fe675038 JK |
1578 | if (bs->stop) |
1579 | { | |
d7e7e851 | 1580 | bs_class = step_resume; |
fe675038 JK |
1581 | } |
1582 | else | |
1583 | /* It is for the wrong frame. */ | |
1584 | bs_class = bp_nostop; | |
bcc37718 JK |
1585 | break; |
1586 | case bp_through_sigtramp: | |
1587 | bs_class = through_sig; | |
fe675038 | 1588 | break; |
999dd04b JL |
1589 | case bp_watchpoint_scope: |
1590 | bs_class = bp_nostop; | |
1591 | break; | |
1592 | ||
84d59861 JK |
1593 | case bp_call_dummy: |
1594 | /* Make sure the action is stop (silent or noisy), so infrun.c | |
1595 | pops the dummy frame. */ | |
1596 | bs_class = bp_silent; | |
1597 | retval.call_dummy = 1; | |
bb7b3800 | 1598 | break; |
cabd4da6 JK |
1599 | } |
1600 | current_action = table[(int)bs_class][(int)current_action]; | |
1601 | } | |
84d59861 JK |
1602 | retval.main_action = current_action; |
1603 | return retval; | |
cabd4da6 | 1604 | } |
bd5635a1 | 1605 | |
30875e1c SG |
1606 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
1607 | without hardware support). This isn't related to a specific bpstat, | |
1608 | just to things like whether watchpoints are set. */ | |
1609 | ||
bd5635a1 RP |
1610 | int |
1611 | bpstat_should_step () | |
1612 | { | |
1613 | struct breakpoint *b; | |
1614 | ALL_BREAKPOINTS (b) | |
30875e1c | 1615 | if (b->enable == enabled && b->type == bp_watchpoint) |
bd5635a1 RP |
1616 | return 1; |
1617 | return 0; | |
1618 | } | |
1619 | \f | |
1620 | /* Print information on breakpoint number BNUM, or -1 if all. | |
1621 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
1622 | is nonzero, process only watchpoints. */ | |
1623 | ||
1624 | static void | |
c8950965 | 1625 | breakpoint_1 (bnum, allflag) |
bd5635a1 | 1626 | int bnum; |
80ba48f5 | 1627 | int allflag; |
bd5635a1 RP |
1628 | { |
1629 | register struct breakpoint *b; | |
1630 | register struct command_line *l; | |
1631 | register struct symbol *sym; | |
1632 | CORE_ADDR last_addr = (CORE_ADDR)-1; | |
30875e1c | 1633 | int found_a_breakpoint = 0; |
11054881 KH |
1634 | static char *bptypes[] = {"breakpoint", "hw breakpoint", |
1635 | "until", "finish", "watchpoint", | |
1636 | "hw watchpoint", "read watchpoint", | |
1637 | "acc watchpoint", "longjmp", | |
999dd04b JL |
1638 | "longjmp resume", "step resume", |
1639 | "watchpoint scope", "call dummy" }; | |
80ba48f5 | 1640 | static char *bpdisps[] = {"del", "dis", "keep"}; |
30875e1c | 1641 | static char bpenables[] = "ny"; |
0a62ff36 | 1642 | char wrap_indent[80]; |
30875e1c | 1643 | |
bd5635a1 | 1644 | ALL_BREAKPOINTS (b) |
30875e1c SG |
1645 | if (bnum == -1 |
1646 | || bnum == b->number) | |
bd5635a1 | 1647 | { |
80ba48f5 SG |
1648 | /* We only print out user settable breakpoints unless the allflag is set. */ |
1649 | if (!allflag | |
1650 | && b->type != bp_breakpoint | |
11054881 | 1651 | && b->type != bp_hardware_breakpoint |
999dd04b | 1652 | && b->type != bp_watchpoint |
11054881 KH |
1653 | && b->type != bp_read_watchpoint |
1654 | && b->type != bp_access_watchpoint | |
999dd04b | 1655 | && b->type != bp_hardware_watchpoint) |
80ba48f5 SG |
1656 | continue; |
1657 | ||
30875e1c | 1658 | if (!found_a_breakpoint++) |
47ebe8fd | 1659 | { |
11054881 KH |
1660 | if (annotation_level > 1) |
1661 | printf_filtered ("\n\032\032breakpoints-headers\n"); | |
47ebe8fd | 1662 | |
11054881 KH |
1663 | printf_filtered ("Num Type Disp Enb %sWhat\n", |
1664 | addressprint ? "Address " : ""); | |
1665 | ||
1666 | if (annotation_level > 1) | |
1667 | printf_filtered ("\n\032\032breakpoints-table\n"); | |
47ebe8fd JK |
1668 | } |
1669 | ||
11054881 KH |
1670 | if (annotation_level > 1) |
1671 | printf_filtered ("\n\032\032field 0\n"); | |
47ebe8fd | 1672 | printf_filtered ("%-3d ", b->number); |
11054881 KH |
1673 | if (annotation_level > 1) |
1674 | printf_filtered ("\n\032\032field 1\n"); | |
47ebe8fd | 1675 | printf_filtered ("%-14s ", bptypes[(int)b->type]); |
11054881 KH |
1676 | if (annotation_level > 1) |
1677 | printf_filtered ("\n\032\032field 2\n"); | |
47ebe8fd | 1678 | printf_filtered ("%-4s ", bpdisps[(int)b->disposition]); |
11054881 KH |
1679 | if (annotation_level > 1) |
1680 | printf_filtered ("\n\032\032field 3\n"); | |
47ebe8fd JK |
1681 | printf_filtered ("%-3c ", bpenables[(int)b->enable]); |
1682 | ||
0a62ff36 JK |
1683 | strcpy (wrap_indent, " "); |
1684 | if (addressprint) | |
1685 | strcat (wrap_indent, " "); | |
30875e1c | 1686 | switch (b->type) |
bd5635a1 | 1687 | { |
30875e1c | 1688 | case bp_watchpoint: |
999dd04b | 1689 | case bp_hardware_watchpoint: |
11054881 KH |
1690 | case bp_read_watchpoint: |
1691 | case bp_access_watchpoint: | |
47ebe8fd JK |
1692 | /* Field 4, the address, is omitted (which makes the columns |
1693 | not line up too nicely with the headers, but the effect | |
1694 | is relatively readable). */ | |
11054881 KH |
1695 | if (annotation_level > 1) |
1696 | printf_filtered ("\n\032\032field 5\n"); | |
199b2450 | 1697 | print_expression (b->exp, gdb_stdout); |
30875e1c | 1698 | break; |
84d59861 | 1699 | |
30875e1c | 1700 | case bp_breakpoint: |
11054881 | 1701 | case bp_hardware_breakpoint: |
80ba48f5 SG |
1702 | case bp_until: |
1703 | case bp_finish: | |
1704 | case bp_longjmp: | |
1705 | case bp_longjmp_resume: | |
84d59861 | 1706 | case bp_step_resume: |
bcc37718 | 1707 | case bp_through_sigtramp: |
999dd04b | 1708 | case bp_watchpoint_scope: |
bb7b3800 | 1709 | case bp_call_dummy: |
bd5635a1 | 1710 | if (addressprint) |
47ebe8fd | 1711 | { |
11054881 KH |
1712 | if (annotation_level > 1) |
1713 | printf_filtered ("\n\032\032field 4\n"); | |
47ebe8fd JK |
1714 | /* FIXME-32x64: need a print_address_numeric with |
1715 | field width */ | |
1716 | printf_filtered | |
1717 | ("%s ", | |
1718 | local_hex_string_custom | |
1719 | ((unsigned long) b->address, "08l")); | |
1720 | } | |
1721 | ||
11054881 KH |
1722 | if (annotation_level > 1) |
1723 | printf_filtered ("\n\032\032field 5\n"); | |
bd5635a1 RP |
1724 | |
1725 | last_addr = b->address; | |
d889f6b7 | 1726 | if (b->source_file) |
bd5635a1 RP |
1727 | { |
1728 | sym = find_pc_function (b->address); | |
1729 | if (sym) | |
1730 | { | |
199b2450 TL |
1731 | fputs_filtered ("in ", gdb_stdout); |
1732 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
0a62ff36 | 1733 | wrap_here (wrap_indent); |
199b2450 | 1734 | fputs_filtered (" at ", gdb_stdout); |
bd5635a1 | 1735 | } |
199b2450 | 1736 | fputs_filtered (b->source_file, gdb_stdout); |
bd5635a1 RP |
1737 | printf_filtered (":%d", b->line_number); |
1738 | } | |
1739 | else | |
199b2450 | 1740 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); |
fee933f1 | 1741 | break; |
bd5635a1 RP |
1742 | } |
1743 | ||
1744 | printf_filtered ("\n"); | |
1745 | ||
1746 | if (b->frame) | |
833e0d94 | 1747 | { |
11054881 KH |
1748 | if (annotation_level > 1) |
1749 | printf_filtered ("\n\032\032field 6\n"); | |
47ebe8fd | 1750 | |
833e0d94 | 1751 | printf_filtered ("\tstop only in stack frame at "); |
d24c0599 | 1752 | print_address_numeric (b->frame, 1, gdb_stdout); |
833e0d94 | 1753 | printf_filtered ("\n"); |
bcc37718 | 1754 | } |
47ebe8fd | 1755 | |
bd5635a1 RP |
1756 | if (b->cond) |
1757 | { | |
11054881 KH |
1758 | if (annotation_level > 1) |
1759 | printf_filtered ("\n\032\032field 7\n"); | |
47ebe8fd | 1760 | |
bd5635a1 | 1761 | printf_filtered ("\tstop only if "); |
199b2450 | 1762 | print_expression (b->cond, gdb_stdout); |
bd5635a1 RP |
1763 | printf_filtered ("\n"); |
1764 | } | |
47ebe8fd | 1765 | |
bd5635a1 | 1766 | if (b->ignore_count) |
47ebe8fd | 1767 | { |
11054881 KH |
1768 | if (annotation_level > 1) |
1769 | printf_filtered ("\n\032\032field 8\n"); | |
47ebe8fd JK |
1770 | |
1771 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
1772 | } | |
1773 | ||
bd5635a1 | 1774 | if ((l = b->commands)) |
47ebe8fd | 1775 | { |
11054881 KH |
1776 | if (annotation_level > 1) |
1777 | printf_filtered ("\n\032\032field 9\n"); | |
47ebe8fd JK |
1778 | |
1779 | while (l) | |
1780 | { | |
1781 | fputs_filtered ("\t", gdb_stdout); | |
1782 | fputs_filtered (l->line, gdb_stdout); | |
1783 | fputs_filtered ("\n", gdb_stdout); | |
1784 | l = l->next; | |
1785 | } | |
1786 | } | |
bd5635a1 RP |
1787 | } |
1788 | ||
fee933f1 RP |
1789 | if (!found_a_breakpoint) |
1790 | { | |
1791 | if (bnum == -1) | |
1792 | printf_filtered ("No breakpoints or watchpoints.\n"); | |
1793 | else | |
1794 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); | |
1795 | } | |
30875e1c SG |
1796 | else |
1797 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
1798 | that a comparison of an unsigned with -1 is always false. */ | |
1799 | if (last_addr != (CORE_ADDR)-1) | |
1800 | set_next_address (last_addr); | |
47ebe8fd | 1801 | |
11054881 KH |
1802 | if (annotation_level > 1) |
1803 | printf_filtered ("\n\032\032breakpoints-table-end\n"); | |
bd5635a1 RP |
1804 | } |
1805 | ||
bdbd5f50 | 1806 | /* ARGSUSED */ |
bd5635a1 RP |
1807 | static void |
1808 | breakpoints_info (bnum_exp, from_tty) | |
1809 | char *bnum_exp; | |
1810 | int from_tty; | |
1811 | { | |
1812 | int bnum = -1; | |
1813 | ||
1814 | if (bnum_exp) | |
1815 | bnum = parse_and_eval_address (bnum_exp); | |
1816 | ||
c8950965 | 1817 | breakpoint_1 (bnum, 0); |
80ba48f5 SG |
1818 | } |
1819 | ||
9b280a7f JG |
1820 | #if MAINTENANCE_CMDS |
1821 | ||
80ba48f5 SG |
1822 | /* ARGSUSED */ |
1823 | static void | |
9b280a7f | 1824 | maintenance_info_breakpoints (bnum_exp, from_tty) |
80ba48f5 SG |
1825 | char *bnum_exp; |
1826 | int from_tty; | |
1827 | { | |
1828 | int bnum = -1; | |
1829 | ||
1830 | if (bnum_exp) | |
1831 | bnum = parse_and_eval_address (bnum_exp); | |
1832 | ||
c8950965 | 1833 | breakpoint_1 (bnum, 1); |
bd5635a1 RP |
1834 | } |
1835 | ||
9b280a7f JG |
1836 | #endif |
1837 | ||
bd5635a1 RP |
1838 | /* Print a message describing any breakpoints set at PC. */ |
1839 | ||
1840 | static void | |
1841 | describe_other_breakpoints (pc) | |
1842 | register CORE_ADDR pc; | |
1843 | { | |
1844 | register int others = 0; | |
1845 | register struct breakpoint *b; | |
1846 | ||
1847 | ALL_BREAKPOINTS (b) | |
1848 | if (b->address == pc) | |
1849 | others++; | |
1850 | if (others > 0) | |
1851 | { | |
833e0d94 | 1852 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); |
bd5635a1 RP |
1853 | ALL_BREAKPOINTS (b) |
1854 | if (b->address == pc) | |
1855 | { | |
1856 | others--; | |
833e0d94 JK |
1857 | printf_filtered |
1858 | ("%d%s%s ", | |
1859 | b->number, | |
1860 | (b->enable == disabled) ? " (disabled)" : "", | |
1861 | (others > 1) ? "," : ((others == 1) ? " and" : "")); | |
bd5635a1 | 1862 | } |
833e0d94 | 1863 | printf_filtered ("also set at pc "); |
d24c0599 | 1864 | print_address_numeric (pc, 1, gdb_stdout); |
833e0d94 | 1865 | printf_filtered (".\n"); |
bd5635a1 RP |
1866 | } |
1867 | } | |
1868 | \f | |
1869 | /* Set the default place to put a breakpoint | |
1870 | for the `break' command with no arguments. */ | |
1871 | ||
1872 | void | |
1873 | set_default_breakpoint (valid, addr, symtab, line) | |
1874 | int valid; | |
1875 | CORE_ADDR addr; | |
1876 | struct symtab *symtab; | |
1877 | int line; | |
1878 | { | |
1879 | default_breakpoint_valid = valid; | |
1880 | default_breakpoint_address = addr; | |
1881 | default_breakpoint_symtab = symtab; | |
1882 | default_breakpoint_line = line; | |
1883 | } | |
1884 | ||
1885 | /* Rescan breakpoints at address ADDRESS, | |
1886 | marking the first one as "first" and any others as "duplicates". | |
1887 | This is so that the bpt instruction is only inserted once. */ | |
1888 | ||
1889 | static void | |
1890 | check_duplicates (address) | |
1891 | CORE_ADDR address; | |
1892 | { | |
1893 | register struct breakpoint *b; | |
1894 | register int count = 0; | |
1895 | ||
30875e1c | 1896 | if (address == 0) /* Watchpoints are uninteresting */ |
f266e564 JK |
1897 | return; |
1898 | ||
bd5635a1 RP |
1899 | ALL_BREAKPOINTS (b) |
1900 | if (b->enable != disabled && b->address == address) | |
1901 | { | |
1902 | count++; | |
1903 | b->duplicate = count > 1; | |
1904 | } | |
1905 | } | |
1906 | ||
1907 | /* Low level routine to set a breakpoint. | |
1908 | Takes as args the three things that every breakpoint must have. | |
1909 | Returns the breakpoint object so caller can set other things. | |
1910 | Does not set the breakpoint number! | |
f266e564 JK |
1911 | Does not print anything. |
1912 | ||
1913 | ==> This routine should not be called if there is a chance of later | |
1914 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
1915 | your arguments BEFORE calling this routine! */ | |
bd5635a1 RP |
1916 | |
1917 | static struct breakpoint * | |
1918 | set_raw_breakpoint (sal) | |
1919 | struct symtab_and_line sal; | |
1920 | { | |
1921 | register struct breakpoint *b, *b1; | |
1922 | ||
1923 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4ed3a9ea | 1924 | memset (b, 0, sizeof (*b)); |
bd5635a1 | 1925 | b->address = sal.pc; |
d889f6b7 JK |
1926 | if (sal.symtab == NULL) |
1927 | b->source_file = NULL; | |
1928 | else | |
1929 | b->source_file = savestring (sal.symtab->filename, | |
1930 | strlen (sal.symtab->filename)); | |
199b2450 | 1931 | b->thread = -1; |
bd5635a1 RP |
1932 | b->line_number = sal.line; |
1933 | b->enable = enabled; | |
1934 | b->next = 0; | |
1935 | b->silent = 0; | |
1936 | b->ignore_count = 0; | |
1937 | b->commands = NULL; | |
30875e1c | 1938 | b->frame = 0; |
bd5635a1 RP |
1939 | |
1940 | /* Add this breakpoint to the end of the chain | |
1941 | so that a list of breakpoints will come out in order | |
1942 | of increasing numbers. */ | |
1943 | ||
1944 | b1 = breakpoint_chain; | |
1945 | if (b1 == 0) | |
1946 | breakpoint_chain = b; | |
1947 | else | |
1948 | { | |
1949 | while (b1->next) | |
1950 | b1 = b1->next; | |
1951 | b1->next = b; | |
1952 | } | |
1953 | ||
1954 | check_duplicates (sal.pc); | |
6c803036 | 1955 | breakpoints_changed (); |
bd5635a1 RP |
1956 | |
1957 | return b; | |
1958 | } | |
1959 | ||
30875e1c | 1960 | static void |
80ba48f5 | 1961 | create_longjmp_breakpoint(func_name) |
30875e1c | 1962 | char *func_name; |
30875e1c | 1963 | { |
30875e1c SG |
1964 | struct symtab_and_line sal; |
1965 | struct breakpoint *b; | |
80ba48f5 | 1966 | static int internal_breakpoint_number = -1; |
30875e1c | 1967 | |
30875e1c SG |
1968 | if (func_name != NULL) |
1969 | { | |
1970 | struct minimal_symbol *m; | |
1971 | ||
1972 | m = lookup_minimal_symbol(func_name, (struct objfile *)NULL); | |
1973 | if (m) | |
2d313932 | 1974 | sal.pc = SYMBOL_VALUE_ADDRESS (m); |
30875e1c SG |
1975 | else |
1976 | return; | |
1977 | } | |
1978 | else | |
1979 | sal.pc = 0; | |
1980 | ||
1981 | sal.symtab = NULL; | |
1982 | sal.line = 0; | |
30875e1c | 1983 | |
80ba48f5 | 1984 | b = set_raw_breakpoint(sal); |
30875e1c SG |
1985 | if (!b) return; |
1986 | ||
80ba48f5 | 1987 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; |
30875e1c SG |
1988 | b->disposition = donttouch; |
1989 | b->enable = disabled; | |
1990 | b->silent = 1; | |
80ba48f5 SG |
1991 | if (func_name) |
1992 | b->addr_string = strsave(func_name); | |
1993 | b->number = internal_breakpoint_number--; | |
30875e1c | 1994 | } |
30875e1c SG |
1995 | |
1996 | /* Call this routine when stepping and nexting to enable a breakpoint if we do | |
1997 | a longjmp(). When we hit that breakpoint, call | |
1998 | set_longjmp_resume_breakpoint() to figure out where we are going. */ | |
1999 | ||
2000 | void | |
2001 | enable_longjmp_breakpoint() | |
2002 | { | |
80ba48f5 SG |
2003 | register struct breakpoint *b; |
2004 | ||
2005 | ALL_BREAKPOINTS (b) | |
2006 | if (b->type == bp_longjmp) | |
9b280a7f JG |
2007 | { |
2008 | b->enable = enabled; | |
2009 | check_duplicates (b->address); | |
2010 | } | |
30875e1c SG |
2011 | } |
2012 | ||
2013 | void | |
2014 | disable_longjmp_breakpoint() | |
2015 | { | |
80ba48f5 SG |
2016 | register struct breakpoint *b; |
2017 | ||
2018 | ALL_BREAKPOINTS (b) | |
9b280a7f | 2019 | if ( b->type == bp_longjmp |
80ba48f5 | 2020 | || b->type == bp_longjmp_resume) |
9b280a7f JG |
2021 | { |
2022 | b->enable = disabled; | |
2023 | check_duplicates (b->address); | |
2024 | } | |
30875e1c SG |
2025 | } |
2026 | ||
11054881 KH |
2027 | int |
2028 | hw_breakpoint_used_count() | |
2029 | { | |
2030 | register struct breakpoint *b; | |
2031 | int i = 0; | |
2032 | ||
2033 | ALL_BREAKPOINTS (b) | |
2034 | { | |
2035 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
2036 | i++; | |
2037 | } | |
2038 | ||
2039 | return i; | |
2040 | } | |
2041 | ||
2042 | int | |
2043 | hw_watchpoint_used_count(type, other_type_used) | |
2044 | enum bptype type; | |
2045 | int *other_type_used; | |
2046 | { | |
2047 | register struct breakpoint *b; | |
2048 | int i = 0; | |
2049 | ||
2050 | *other_type_used = 0; | |
2051 | ALL_BREAKPOINTS (b) | |
2052 | { | |
2053 | if (b->enable == enabled) | |
2054 | { | |
2055 | if (b->type == type) i++; | |
2056 | else if ((b->type == bp_hardware_watchpoint || | |
2057 | b->type == bp_read_watchpoint || | |
2058 | b->type == bp_access_watchpoint) | |
2059 | && b->enable == enabled) | |
2060 | *other_type_used = 1; | |
2061 | } | |
2062 | } | |
2063 | return i; | |
2064 | } | |
2065 | ||
30875e1c SG |
2066 | /* Call this after hitting the longjmp() breakpoint. Use this to set a new |
2067 | breakpoint at the target of the jmp_buf. | |
80ba48f5 SG |
2068 | |
2069 | FIXME - This ought to be done by setting a temporary breakpoint that gets | |
2070 | deleted automatically... | |
30875e1c SG |
2071 | */ |
2072 | ||
2073 | void | |
2074 | set_longjmp_resume_breakpoint(pc, frame) | |
2075 | CORE_ADDR pc; | |
2076 | FRAME frame; | |
2077 | { | |
80ba48f5 SG |
2078 | register struct breakpoint *b; |
2079 | ||
2080 | ALL_BREAKPOINTS (b) | |
2081 | if (b->type == bp_longjmp_resume) | |
2082 | { | |
2083 | b->address = pc; | |
2084 | b->enable = enabled; | |
2085 | if (frame != NULL) | |
2086 | b->frame = FRAME_FP(frame); | |
2087 | else | |
2088 | b->frame = 0; | |
9b280a7f | 2089 | check_duplicates (b->address); |
80ba48f5 SG |
2090 | return; |
2091 | } | |
30875e1c SG |
2092 | } |
2093 | ||
bd5635a1 RP |
2094 | /* Set a breakpoint that will evaporate an end of command |
2095 | at address specified by SAL. | |
2096 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
2097 | ||
30875e1c SG |
2098 | struct breakpoint * |
2099 | set_momentary_breakpoint (sal, frame, type) | |
bd5635a1 RP |
2100 | struct symtab_and_line sal; |
2101 | FRAME frame; | |
30875e1c | 2102 | enum bptype type; |
bd5635a1 RP |
2103 | { |
2104 | register struct breakpoint *b; | |
2105 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
2106 | b->type = type; |
2107 | b->enable = enabled; | |
2108 | b->disposition = donttouch; | |
bd5635a1 | 2109 | b->frame = (frame ? FRAME_FP (frame) : 0); |
30875e1c | 2110 | return b; |
bd5635a1 RP |
2111 | } |
2112 | ||
30875e1c | 2113 | #if 0 |
bd5635a1 RP |
2114 | void |
2115 | clear_momentary_breakpoints () | |
2116 | { | |
2117 | register struct breakpoint *b; | |
2118 | ALL_BREAKPOINTS (b) | |
30875e1c | 2119 | if (b->disposition == delete) |
bd5635a1 RP |
2120 | { |
2121 | delete_breakpoint (b); | |
2122 | break; | |
2123 | } | |
2124 | } | |
30875e1c | 2125 | #endif |
bd5635a1 RP |
2126 | \f |
2127 | /* Tell the user we have just set a breakpoint B. */ | |
2128 | static void | |
2129 | mention (b) | |
2130 | struct breakpoint *b; | |
2131 | { | |
30875e1c | 2132 | switch (b->type) |
bd5635a1 | 2133 | { |
30875e1c | 2134 | case bp_watchpoint: |
bd5635a1 | 2135 | printf_filtered ("Watchpoint %d: ", b->number); |
199b2450 | 2136 | print_expression (b->exp, gdb_stdout); |
30875e1c | 2137 | break; |
999dd04b JL |
2138 | case bp_hardware_watchpoint: |
2139 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
2140 | print_expression (b->exp, gdb_stdout); | |
2141 | break; | |
11054881 KH |
2142 | case bp_read_watchpoint: |
2143 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
2144 | print_expression (b->exp, gdb_stdout); | |
2145 | break; | |
2146 | case bp_access_watchpoint: | |
2147 | printf_filtered ("Hardware access(read/write) watchpoint %d: ",b->number); | |
2148 | print_expression (b->exp, gdb_stdout); | |
2149 | break; | |
30875e1c | 2150 | case bp_breakpoint: |
833e0d94 | 2151 | printf_filtered ("Breakpoint %d at ", b->number); |
d24c0599 | 2152 | print_address_numeric (b->address, 1, gdb_stdout); |
d889f6b7 | 2153 | if (b->source_file) |
bd5635a1 | 2154 | printf_filtered (": file %s, line %d.", |
d889f6b7 | 2155 | b->source_file, b->line_number); |
51b57ded | 2156 | break; |
11054881 KH |
2157 | case bp_hardware_breakpoint: |
2158 | printf_filtered ("Hardware assisted breakpoint %d at ", b->number); | |
2159 | print_address_numeric (b->address, 1, gdb_stdout); | |
2160 | if (b->source_file) | |
2161 | printf_filtered (": file %s, line %d.", | |
2162 | b->source_file, b->line_number); | |
2163 | break; | |
51b57ded FF |
2164 | case bp_until: |
2165 | case bp_finish: | |
2166 | case bp_longjmp: | |
2167 | case bp_longjmp_resume: | |
fee933f1 | 2168 | case bp_step_resume: |
bcc37718 | 2169 | case bp_through_sigtramp: |
199b2450 | 2170 | case bp_call_dummy: |
999dd04b | 2171 | case bp_watchpoint_scope: |
51b57ded | 2172 | break; |
bd5635a1 RP |
2173 | } |
2174 | printf_filtered ("\n"); | |
2175 | } | |
2176 | ||
2177 | #if 0 | |
2178 | /* Nobody calls this currently. */ | |
2179 | /* Set a breakpoint from a symtab and line. | |
2180 | If TEMPFLAG is nonzero, it is a temporary breakpoint. | |
2181 | ADDR_STRING is a malloc'd string holding the name of where we are | |
2182 | setting the breakpoint. This is used later to re-set it after the | |
2183 | program is relinked and symbols are reloaded. | |
2184 | Print the same confirmation messages that the breakpoint command prints. */ | |
2185 | ||
2186 | void | |
2187 | set_breakpoint (s, line, tempflag, addr_string) | |
2188 | struct symtab *s; | |
2189 | int line; | |
2190 | int tempflag; | |
2191 | char *addr_string; | |
2192 | { | |
2193 | register struct breakpoint *b; | |
2194 | struct symtab_and_line sal; | |
2195 | ||
2196 | sal.symtab = s; | |
2197 | sal.line = line; | |
30875e1c SG |
2198 | sal.pc = 0; |
2199 | resolve_sal_pc (&sal); /* Might error out */ | |
2200 | describe_other_breakpoints (sal.pc); | |
bd5635a1 | 2201 | |
30875e1c SG |
2202 | b = set_raw_breakpoint (sal); |
2203 | set_breakpoint_count (breakpoint_count + 1); | |
2204 | b->number = breakpoint_count; | |
2205 | b->type = bp_breakpoint; | |
2206 | b->cond = 0; | |
2207 | b->addr_string = addr_string; | |
2208 | b->enable = enabled; | |
2209 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 | 2210 | |
30875e1c | 2211 | mention (b); |
bd5635a1 | 2212 | } |
30875e1c | 2213 | #endif /* 0 */ |
bd5635a1 RP |
2214 | \f |
2215 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
11054881 KH |
2216 | flag: first bit : 0 non-temporary, 1 temporary. |
2217 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
bd5635a1 RP |
2218 | |
2219 | static void | |
11054881 | 2220 | break_command_1 (arg, flag, from_tty) |
bd5635a1 | 2221 | char *arg; |
11054881 | 2222 | int flag, from_tty; |
bd5635a1 | 2223 | { |
11054881 | 2224 | int tempflag, hardwareflag; |
bd5635a1 RP |
2225 | struct symtabs_and_lines sals; |
2226 | struct symtab_and_line sal; | |
2227 | register struct expression *cond = 0; | |
2228 | register struct breakpoint *b; | |
2229 | ||
2230 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
2231 | char *cond_start = NULL; | |
fee933f1 | 2232 | char *cond_end = NULL; |
bd5635a1 RP |
2233 | /* Pointers in arg to the start, and one past the end, |
2234 | of the address part. */ | |
2235 | char *addr_start = NULL; | |
fee933f1 | 2236 | char *addr_end = NULL; |
d889f6b7 | 2237 | struct cleanup *old_chain; |
fee933f1 | 2238 | struct cleanup *canonical_strings_chain = NULL; |
d889f6b7 | 2239 | char **canonical = (char **)NULL; |
bd5635a1 | 2240 | int i; |
199b2450 | 2241 | int thread; |
bd5635a1 | 2242 | |
11054881 KH |
2243 | hardwareflag = flag & 2; |
2244 | tempflag = flag & 1; | |
2245 | ||
bd5635a1 RP |
2246 | sals.sals = NULL; |
2247 | sals.nelts = 0; | |
2248 | ||
2249 | sal.line = sal.pc = sal.end = 0; | |
2250 | sal.symtab = 0; | |
2251 | ||
2252 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
2253 | ||
2254 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2255 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2256 | { | |
2257 | if (default_breakpoint_valid) | |
2258 | { | |
2259 | sals.sals = (struct symtab_and_line *) | |
2260 | xmalloc (sizeof (struct symtab_and_line)); | |
2261 | sal.pc = default_breakpoint_address; | |
2262 | sal.line = default_breakpoint_line; | |
2263 | sal.symtab = default_breakpoint_symtab; | |
2264 | sals.sals[0] = sal; | |
2265 | sals.nelts = 1; | |
2266 | } | |
2267 | else | |
2268 | error ("No default breakpoint address now."); | |
2269 | } | |
2270 | else | |
2271 | { | |
2272 | addr_start = arg; | |
2273 | ||
2274 | /* Force almost all breakpoints to be in terms of the | |
2275 | current_source_symtab (which is decode_line_1's default). This | |
2276 | should produce the results we want almost all of the time while | |
2277 | leaving default_breakpoint_* alone. */ | |
2278 | if (default_breakpoint_valid | |
2279 | && (!current_source_symtab | |
2280 | || (arg && (*arg == '+' || *arg == '-')))) | |
2281 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2282 | default_breakpoint_line, &canonical); |
bd5635a1 | 2283 | else |
d889f6b7 | 2284 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical); |
bd5635a1 RP |
2285 | |
2286 | addr_end = arg; | |
2287 | } | |
2288 | ||
2289 | if (! sals.nelts) | |
2290 | return; | |
2291 | ||
d889f6b7 JK |
2292 | /* Make sure that all storage allocated in decode_line_1 gets freed in case |
2293 | the following `for' loop errors out. */ | |
2294 | old_chain = make_cleanup (free, sals.sals); | |
2295 | if (canonical != (char **)NULL) | |
2296 | { | |
2297 | make_cleanup (free, canonical); | |
2298 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
2299 | for (i = 0; i < sals.nelts; i++) | |
2300 | { | |
2301 | if (canonical[i] != NULL) | |
2302 | make_cleanup (free, canonical[i]); | |
2303 | } | |
2304 | } | |
2305 | ||
199b2450 TL |
2306 | thread = -1; /* No specific thread yet */ |
2307 | ||
30875e1c SG |
2308 | /* Resolve all line numbers to PC's, and verify that conditions |
2309 | can be parsed, before setting any breakpoints. */ | |
bd5635a1 RP |
2310 | for (i = 0; i < sals.nelts; i++) |
2311 | { | |
199b2450 TL |
2312 | char *tok, *end_tok; |
2313 | int toklen; | |
2314 | ||
30875e1c | 2315 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 | 2316 | |
199b2450 TL |
2317 | tok = arg; |
2318 | ||
2319 | while (tok && *tok) | |
bd5635a1 | 2320 | { |
199b2450 TL |
2321 | while (*tok == ' ' || *tok == '\t') |
2322 | tok++; | |
2323 | ||
2324 | end_tok = tok; | |
2325 | ||
2326 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2327 | end_tok++; | |
2328 | ||
2329 | toklen = end_tok - tok; | |
2330 | ||
2331 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2332 | { | |
2333 | tok = cond_start = end_tok + 1; | |
2334 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
2335 | cond_end = tok; | |
2336 | } | |
2337 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
bd5635a1 | 2338 | { |
199b2450 TL |
2339 | char *tmptok; |
2340 | ||
2341 | tok = end_tok + 1; | |
2342 | tmptok = tok; | |
2343 | thread = strtol (tok, &tok, 0); | |
2344 | if (tok == tmptok) | |
2345 | error ("Junk after thread keyword."); | |
2346 | if (!valid_thread_id (thread)) | |
2347 | error ("Unknown thread %d\n", thread); | |
bd5635a1 RP |
2348 | } |
2349 | else | |
2350 | error ("Junk at end of arguments."); | |
2351 | } | |
bd5635a1 | 2352 | } |
11054881 KH |
2353 | if (hardwareflag) |
2354 | { | |
2355 | int i, other_type_used, target_resources_ok; | |
2356 | i = hw_breakpoint_used_count(); | |
2357 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
2358 | bp_hardware_breakpoint, i+sals.nelts, 0); | |
2359 | if (target_resources_ok == 0) | |
2360 | error ("No hardware breakpoint support in the target."); | |
2361 | else if (target_resources_ok < 0) | |
2362 | error ("Hardware breakpoints used exceeds limit."); | |
2363 | } | |
bd5635a1 | 2364 | |
d889f6b7 JK |
2365 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
2366 | if (canonical != (char **)NULL) | |
2367 | discard_cleanups (canonical_strings_chain); | |
2368 | ||
30875e1c | 2369 | /* Now set all the breakpoints. */ |
bd5635a1 RP |
2370 | for (i = 0; i < sals.nelts; i++) |
2371 | { | |
2372 | sal = sals.sals[i]; | |
2373 | ||
2374 | if (from_tty) | |
2375 | describe_other_breakpoints (sal.pc); | |
2376 | ||
2377 | b = set_raw_breakpoint (sal); | |
2378 | set_breakpoint_count (breakpoint_count + 1); | |
2379 | b->number = breakpoint_count; | |
11054881 | 2380 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; |
bd5635a1 | 2381 | b->cond = cond; |
199b2450 | 2382 | b->thread = thread; |
0a97f6c4 | 2383 | |
d889f6b7 JK |
2384 | /* If a canonical line spec is needed use that instead of the |
2385 | command string. */ | |
2386 | if (canonical != (char **)NULL && canonical[i] != NULL) | |
2387 | b->addr_string = canonical[i]; | |
2388 | else if (addr_start) | |
bd5635a1 RP |
2389 | b->addr_string = savestring (addr_start, addr_end - addr_start); |
2390 | if (cond_start) | |
2391 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2392 | ||
30875e1c SG |
2393 | b->enable = enabled; |
2394 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 RP |
2395 | |
2396 | mention (b); | |
2397 | } | |
2398 | ||
2399 | if (sals.nelts > 1) | |
2400 | { | |
833e0d94 JK |
2401 | printf_filtered ("Multiple breakpoints were set.\n"); |
2402 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 2403 | } |
d889f6b7 | 2404 | do_cleanups (old_chain); |
bd5635a1 RP |
2405 | } |
2406 | ||
30875e1c SG |
2407 | /* Helper function for break_command_1 and disassemble_command. */ |
2408 | ||
2409 | void | |
2410 | resolve_sal_pc (sal) | |
2411 | struct symtab_and_line *sal; | |
2412 | { | |
2413 | CORE_ADDR pc; | |
2414 | ||
2415 | if (sal->pc == 0 && sal->symtab != 0) | |
2416 | { | |
2417 | pc = find_line_pc (sal->symtab, sal->line); | |
2418 | if (pc == 0) | |
2419 | error ("No line %d in file \"%s\".", | |
2420 | sal->line, sal->symtab->filename); | |
2421 | sal->pc = pc; | |
2422 | } | |
2423 | } | |
2424 | ||
11054881 KH |
2425 | #define BP_TEMPFLAG 1 |
2426 | #define BP_HARDWAREFLAG 2 | |
bd5635a1 RP |
2427 | void |
2428 | break_command (arg, from_tty) | |
2429 | char *arg; | |
2430 | int from_tty; | |
2431 | { | |
2432 | break_command_1 (arg, 0, from_tty); | |
2433 | } | |
2434 | ||
2435 | static void | |
2436 | tbreak_command (arg, from_tty) | |
2437 | char *arg; | |
2438 | int from_tty; | |
2439 | { | |
11054881 KH |
2440 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
2441 | } | |
2442 | ||
2443 | static void | |
2444 | hbreak_command (arg, from_tty) | |
2445 | char *arg; | |
2446 | int from_tty; | |
2447 | { | |
2448 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
2449 | } | |
2450 | ||
2451 | static void | |
2452 | thbreak_command (arg, from_tty) | |
2453 | char *arg; | |
2454 | int from_tty; | |
2455 | { | |
2456 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
bd5635a1 RP |
2457 | } |
2458 | ||
bdbd5f50 | 2459 | /* ARGSUSED */ |
11054881 KH |
2460 | /* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) |
2461 | */ | |
bd5635a1 | 2462 | static void |
11054881 | 2463 | watch_command_1 (arg, accessflag, from_tty) |
bd5635a1 | 2464 | char *arg; |
11054881 | 2465 | int accessflag; |
bd5635a1 RP |
2466 | int from_tty; |
2467 | { | |
2468 | struct breakpoint *b; | |
2469 | struct symtab_and_line sal; | |
f266e564 JK |
2470 | struct expression *exp; |
2471 | struct block *exp_valid_block; | |
11054881 | 2472 | struct value *val, *mark; |
999dd04b | 2473 | FRAME frame, prev_frame; |
11054881 KH |
2474 | char *exp_start = NULL; |
2475 | char *exp_end = NULL; | |
2476 | char *tok, *end_tok; | |
2477 | int toklen; | |
2478 | char *cond_start = NULL; | |
2479 | char *cond_end = NULL; | |
2480 | struct expression *cond = NULL; | |
2481 | int i, other_type_used, target_resources_ok; | |
2482 | enum bptype bp_type; | |
2483 | int mem_cnt = 0; | |
bd5635a1 | 2484 | |
30875e1c | 2485 | sal.pc = 0; |
bd5635a1 RP |
2486 | sal.symtab = NULL; |
2487 | sal.line = 0; | |
2488 | ||
f266e564 JK |
2489 | /* Parse arguments. */ |
2490 | innermost_block = NULL; | |
11054881 KH |
2491 | exp_start = arg; |
2492 | exp = parse_exp_1 (&arg, 0, 0); | |
2493 | exp_end = arg; | |
f266e564 | 2494 | exp_valid_block = innermost_block; |
11054881 | 2495 | mark = value_mark (); |
f266e564 JK |
2496 | val = evaluate_expression (exp); |
2497 | release_value (val); | |
2d313932 JK |
2498 | if (VALUE_LAZY (val)) |
2499 | value_fetch_lazy (val); | |
f266e564 | 2500 | |
11054881 KH |
2501 | tok = arg; |
2502 | while (*tok == ' ' || *tok == '\t') | |
2503 | tok++; | |
2504 | end_tok = tok; | |
2505 | ||
2506 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2507 | end_tok++; | |
2508 | ||
2509 | toklen = end_tok - tok; | |
2510 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2511 | { | |
2512 | tok = cond_start = end_tok + 1; | |
2513 | cond = parse_exp_1 (&tok, 0, 0); | |
2514 | cond_end = tok; | |
2515 | } | |
2516 | if (*tok) | |
2517 | error("Junk at end of command."); | |
2518 | ||
2519 | if (accessflag == 1) bp_type = bp_read_watchpoint; | |
2520 | else if (accessflag == 2) bp_type = bp_access_watchpoint; | |
2521 | else bp_type = bp_hardware_watchpoint; | |
2522 | ||
2523 | mem_cnt = can_use_hardware_watchpoint (val); | |
2524 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
2525 | error ("Expression cannot be implemented with read/access watchpoint."); | |
2526 | if (mem_cnt != 0) { | |
2527 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
2528 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
2529 | bp_type, i + mem_cnt, other_type_used); | |
2530 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) | |
2531 | error ("Target does not have this type of hardware watchpoint support."); | |
2532 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) | |
2533 | error ("Target resources have been allocated for other types of watchpoints."); | |
2534 | } | |
2535 | ||
f266e564 | 2536 | /* Now set up the breakpoint. */ |
bd5635a1 RP |
2537 | b = set_raw_breakpoint (sal); |
2538 | set_breakpoint_count (breakpoint_count + 1); | |
2539 | b->number = breakpoint_count; | |
30875e1c | 2540 | b->disposition = donttouch; |
f266e564 JK |
2541 | b->exp = exp; |
2542 | b->exp_valid_block = exp_valid_block; | |
11054881 | 2543 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
f266e564 | 2544 | b->val = val; |
11054881 KH |
2545 | b->cond = cond; |
2546 | if (cond_start) | |
2547 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2548 | else | |
2549 | b->cond_string = 0; | |
2550 | ||
999dd04b JL |
2551 | frame = block_innermost_frame (exp_valid_block); |
2552 | if (frame) | |
2553 | { | |
2554 | prev_frame = get_prev_frame (frame); | |
2555 | b->watchpoint_frame = FRAME_FP (frame); | |
2556 | } | |
2557 | else | |
9e8db445 | 2558 | b->watchpoint_frame = (CORE_ADDR)0; |
999dd04b | 2559 | |
11054881 KH |
2560 | if (mem_cnt && target_resources_ok > 0) |
2561 | b->type = bp_type; | |
999dd04b JL |
2562 | else |
2563 | b->type = bp_watchpoint; | |
2564 | ||
2565 | /* If the expression is "local", then set up a "watchpoint scope" | |
2566 | breakpoint at the point where we've left the scope of the watchpoint | |
2567 | expression. */ | |
2568 | if (innermost_block) | |
2569 | { | |
2570 | struct breakpoint *scope_breakpoint; | |
2571 | struct symtab_and_line scope_sal; | |
2572 | ||
2573 | if (prev_frame) | |
2574 | { | |
2575 | scope_sal.pc = get_frame_pc (prev_frame); | |
2576 | scope_sal.symtab = NULL; | |
2577 | scope_sal.line = 0; | |
2578 | ||
2579 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
2580 | set_breakpoint_count (breakpoint_count + 1); | |
2581 | scope_breakpoint->number = breakpoint_count; | |
2582 | ||
2583 | scope_breakpoint->type = bp_watchpoint_scope; | |
2584 | scope_breakpoint->enable = enabled; | |
2585 | ||
2586 | /* Automatically delete the breakpoint when it hits. */ | |
2587 | scope_breakpoint->disposition = delete; | |
2588 | ||
2589 | /* Only break in the proper frame (help with recursion). */ | |
2590 | scope_breakpoint->frame = prev_frame->frame; | |
2591 | ||
2592 | /* Set the address at which we will stop. */ | |
2593 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
2594 | ||
2595 | /* The scope breakpoint is related to the watchpoint. We | |
2596 | will need to act on them together. */ | |
2597 | b->related_breakpoint = scope_breakpoint; | |
2598 | } | |
2599 | } | |
11054881 | 2600 | value_free_to_mark (mark); |
bd5635a1 RP |
2601 | mention (b); |
2602 | } | |
999dd04b | 2603 | |
11054881 KH |
2604 | /* Return count of locations need to be watched and can be handled |
2605 | in hardware. If the watchpoint can not be handled | |
999dd04b JL |
2606 | in hardware return zero. */ |
2607 | ||
2608 | static int | |
11054881 KH |
2609 | can_use_hardware_watchpoint (v) |
2610 | struct value *v; | |
999dd04b | 2611 | { |
11054881 | 2612 | int found_memory_cnt = 0; |
999dd04b JL |
2613 | |
2614 | /* Make sure all the intermediate values are in memory. Also make sure | |
2615 | we found at least one memory expression. Guards against watch 0x12345, | |
2616 | which is meaningless, but could cause errors if one tries to insert a | |
2617 | hardware watchpoint for the constant expression. */ | |
11054881 | 2618 | for ( ; v; v = v->next) |
999dd04b | 2619 | { |
11054881 KH |
2620 | if (v->lval == lval_memory) |
2621 | { | |
2622 | if (TYPE_LENGTH (VALUE_TYPE (v)) <= REGISTER_SIZE) | |
2623 | found_memory_cnt++; | |
2624 | } | |
2625 | else if (v->lval != not_lval && v->modifiable == 0) | |
999dd04b | 2626 | return 0; |
999dd04b JL |
2627 | } |
2628 | ||
2629 | /* The expression itself looks suitable for using a hardware | |
2630 | watchpoint, but give the target machine a chance to reject it. */ | |
11054881 KH |
2631 | return found_memory_cnt; |
2632 | } | |
2633 | ||
2634 | static void watch_command (arg, from_tty) | |
2635 | char *arg; | |
2636 | int from_tty; | |
2637 | { | |
2638 | watch_command_1 (arg, 0, from_tty); | |
2639 | } | |
2640 | ||
2641 | static void rwatch_command (arg, from_tty) | |
2642 | char *arg; | |
2643 | int from_tty; | |
2644 | { | |
2645 | watch_command_1 (arg, 1, from_tty); | |
2646 | } | |
2647 | ||
2648 | static void awatch_command (arg, from_tty) | |
2649 | char *arg; | |
2650 | int from_tty; | |
2651 | { | |
2652 | watch_command_1 (arg, 2, from_tty); | |
999dd04b JL |
2653 | } |
2654 | ||
bd5635a1 RP |
2655 | \f |
2656 | /* | |
2657 | * Helper routine for the until_command routine in infcmd.c. Here | |
2658 | * because it uses the mechanisms of breakpoints. | |
2659 | */ | |
bdbd5f50 | 2660 | /* ARGSUSED */ |
bd5635a1 RP |
2661 | void |
2662 | until_break_command (arg, from_tty) | |
2663 | char *arg; | |
2664 | int from_tty; | |
2665 | { | |
2666 | struct symtabs_and_lines sals; | |
2667 | struct symtab_and_line sal; | |
2668 | FRAME prev_frame = get_prev_frame (selected_frame); | |
30875e1c SG |
2669 | struct breakpoint *breakpoint; |
2670 | struct cleanup *old_chain; | |
bd5635a1 RP |
2671 | |
2672 | clear_proceed_status (); | |
2673 | ||
2674 | /* Set a breakpoint where the user wants it and at return from | |
2675 | this function */ | |
2676 | ||
2677 | if (default_breakpoint_valid) | |
2678 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2679 | default_breakpoint_line, (char ***)NULL); |
bd5635a1 | 2680 | else |
d889f6b7 | 2681 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
2682 | |
2683 | if (sals.nelts != 1) | |
2684 | error ("Couldn't get information on specified line."); | |
2685 | ||
2686 | sal = sals.sals[0]; | |
c8950965 | 2687 | free ((PTR)sals.sals); /* malloc'd, so freed */ |
bd5635a1 RP |
2688 | |
2689 | if (*arg) | |
2690 | error ("Junk at end of arguments."); | |
2691 | ||
30875e1c | 2692 | resolve_sal_pc (&sal); |
bd5635a1 | 2693 | |
30875e1c | 2694 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
bd5635a1 | 2695 | |
30875e1c SG |
2696 | old_chain = make_cleanup(delete_breakpoint, breakpoint); |
2697 | ||
bd5635a1 RP |
2698 | /* Keep within the current frame */ |
2699 | ||
2700 | if (prev_frame) | |
2701 | { | |
2702 | struct frame_info *fi; | |
2703 | ||
2704 | fi = get_frame_info (prev_frame); | |
2705 | sal = find_pc_line (fi->pc, 0); | |
2706 | sal.pc = fi->pc; | |
30875e1c SG |
2707 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); |
2708 | make_cleanup(delete_breakpoint, breakpoint); | |
bd5635a1 RP |
2709 | } |
2710 | ||
d7e7e851 | 2711 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
30875e1c | 2712 | do_cleanups(old_chain); |
bd5635a1 RP |
2713 | } |
2714 | \f | |
bdbd5f50 JG |
2715 | #if 0 |
2716 | /* These aren't used; I don't konw what they were for. */ | |
bd5635a1 RP |
2717 | /* Set a breakpoint at the catch clause for NAME. */ |
2718 | static int | |
2719 | catch_breakpoint (name) | |
2720 | char *name; | |
2721 | { | |
2722 | } | |
2723 | ||
2724 | static int | |
2725 | disable_catch_breakpoint () | |
2726 | { | |
2727 | } | |
2728 | ||
2729 | static int | |
2730 | delete_catch_breakpoint () | |
2731 | { | |
2732 | } | |
2733 | ||
2734 | static int | |
2735 | enable_catch_breakpoint () | |
2736 | { | |
2737 | } | |
bdbd5f50 | 2738 | #endif /* 0 */ |
bd5635a1 RP |
2739 | |
2740 | struct sal_chain | |
2741 | { | |
2742 | struct sal_chain *next; | |
2743 | struct symtab_and_line sal; | |
2744 | }; | |
2745 | ||
bdbd5f50 JG |
2746 | #if 0 |
2747 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 RP |
2748 | /* For each catch clause identified in ARGS, run FUNCTION |
2749 | with that clause as an argument. */ | |
2750 | static struct symtabs_and_lines | |
2751 | map_catch_names (args, function) | |
2752 | char *args; | |
2753 | int (*function)(); | |
2754 | { | |
2755 | register char *p = args; | |
2756 | register char *p1; | |
2757 | struct symtabs_and_lines sals; | |
bdbd5f50 | 2758 | #if 0 |
bd5635a1 | 2759 | struct sal_chain *sal_chain = 0; |
bdbd5f50 | 2760 | #endif |
bd5635a1 RP |
2761 | |
2762 | if (p == 0) | |
2763 | error_no_arg ("one or more catch names"); | |
2764 | ||
2765 | sals.nelts = 0; | |
2766 | sals.sals = NULL; | |
2767 | ||
2768 | while (*p) | |
2769 | { | |
2770 | p1 = p; | |
2771 | /* Don't swallow conditional part. */ | |
2772 | if (p1[0] == 'i' && p1[1] == 'f' | |
2773 | && (p1[2] == ' ' || p1[2] == '\t')) | |
2774 | break; | |
2775 | ||
2776 | if (isalpha (*p1)) | |
2777 | { | |
2778 | p1++; | |
2779 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
2780 | p1++; | |
2781 | } | |
2782 | ||
2783 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
2784 | error ("Arguments must be catch names."); | |
2785 | ||
2786 | *p1 = 0; | |
2787 | #if 0 | |
2788 | if (function (p)) | |
2789 | { | |
2790 | struct sal_chain *next | |
2791 | = (struct sal_chain *)alloca (sizeof (struct sal_chain)); | |
2792 | next->next = sal_chain; | |
2793 | next->sal = get_catch_sal (p); | |
2794 | sal_chain = next; | |
2795 | goto win; | |
2796 | } | |
2797 | #endif | |
199b2450 | 2798 | printf_unfiltered ("No catch clause for exception %s.\n", p); |
bdbd5f50 | 2799 | #if 0 |
bd5635a1 | 2800 | win: |
bdbd5f50 | 2801 | #endif |
bd5635a1 RP |
2802 | p = p1; |
2803 | while (*p == ' ' || *p == '\t') p++; | |
2804 | } | |
2805 | } | |
bdbd5f50 | 2806 | #endif /* 0 */ |
bd5635a1 RP |
2807 | |
2808 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
2809 | ||
2810 | static struct symtabs_and_lines | |
2811 | get_catch_sals (this_level_only) | |
2812 | int this_level_only; | |
2813 | { | |
bd5635a1 | 2814 | register struct blockvector *bl; |
777bef06 | 2815 | register struct block *block; |
bd5635a1 | 2816 | int index, have_default = 0; |
777bef06 JK |
2817 | struct frame_info *fi; |
2818 | CORE_ADDR pc; | |
bd5635a1 RP |
2819 | struct symtabs_and_lines sals; |
2820 | struct sal_chain *sal_chain = 0; | |
2821 | char *blocks_searched; | |
2822 | ||
777bef06 JK |
2823 | /* Not sure whether an error message is always the correct response, |
2824 | but it's better than a core dump. */ | |
2825 | if (selected_frame == NULL) | |
2826 | error ("No selected frame."); | |
2827 | block = get_frame_block (selected_frame); | |
2828 | fi = get_frame_info (selected_frame); | |
2829 | pc = fi->pc; | |
2830 | ||
bd5635a1 RP |
2831 | sals.nelts = 0; |
2832 | sals.sals = NULL; | |
2833 | ||
2834 | if (block == 0) | |
2835 | error ("No symbol table info available.\n"); | |
2836 | ||
2837 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
2838 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4ed3a9ea | 2839 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
2840 | |
2841 | while (block != 0) | |
2842 | { | |
2843 | CORE_ADDR end = BLOCK_END (block) - 4; | |
2844 | int last_index; | |
2845 | ||
2846 | if (bl != blockvector_for_pc (end, &index)) | |
2847 | error ("blockvector blotch"); | |
2848 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
2849 | error ("blockvector botch"); | |
2850 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
2851 | index += 1; | |
2852 | ||
2853 | /* Don't print out blocks that have gone by. */ | |
2854 | while (index < last_index | |
2855 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
2856 | index++; | |
2857 | ||
2858 | while (index < last_index | |
2859 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
2860 | { | |
2861 | if (blocks_searched[index] == 0) | |
2862 | { | |
2863 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
2864 | int nsyms; | |
2865 | register int i; | |
2866 | register struct symbol *sym; | |
2867 | ||
2868 | nsyms = BLOCK_NSYMS (b); | |
2869 | ||
2870 | for (i = 0; i < nsyms; i++) | |
2871 | { | |
2872 | sym = BLOCK_SYM (b, i); | |
2d313932 | 2873 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
2874 | { |
2875 | if (have_default) | |
2876 | continue; | |
2877 | have_default = 1; | |
2878 | } | |
2879 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
2880 | { | |
2881 | struct sal_chain *next = (struct sal_chain *) | |
2882 | alloca (sizeof (struct sal_chain)); | |
2883 | next->next = sal_chain; | |
2884 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
2885 | sal_chain = next; | |
2886 | } | |
2887 | } | |
2888 | blocks_searched[index] = 1; | |
2889 | } | |
2890 | index++; | |
2891 | } | |
2892 | if (have_default) | |
2893 | break; | |
2894 | if (sal_chain && this_level_only) | |
2895 | break; | |
2896 | ||
2897 | /* After handling the function's top-level block, stop. | |
2898 | Don't continue to its superblock, the block of | |
2899 | per-file symbols. */ | |
2900 | if (BLOCK_FUNCTION (block)) | |
2901 | break; | |
2902 | block = BLOCK_SUPERBLOCK (block); | |
2903 | } | |
2904 | ||
2905 | if (sal_chain) | |
2906 | { | |
2907 | struct sal_chain *tmp_chain; | |
2908 | ||
2909 | /* Count the number of entries. */ | |
2910 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
2911 | tmp_chain = tmp_chain->next) | |
2912 | index++; | |
2913 | ||
2914 | sals.nelts = index; | |
2915 | sals.sals = (struct symtab_and_line *) | |
2916 | xmalloc (index * sizeof (struct symtab_and_line)); | |
2917 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
2918 | sals.sals[index] = sal_chain->sal; | |
2919 | } | |
2920 | ||
2921 | return sals; | |
2922 | } | |
2923 | ||
2924 | /* Commands to deal with catching exceptions. */ | |
2925 | ||
30875e1c | 2926 | static void |
bd5635a1 RP |
2927 | catch_command_1 (arg, tempflag, from_tty) |
2928 | char *arg; | |
2929 | int tempflag; | |
2930 | int from_tty; | |
2931 | { | |
2932 | /* First, translate ARG into something we can deal with in terms | |
2933 | of breakpoints. */ | |
2934 | ||
2935 | struct symtabs_and_lines sals; | |
2936 | struct symtab_and_line sal; | |
2937 | register struct expression *cond = 0; | |
2938 | register struct breakpoint *b; | |
2939 | char *save_arg; | |
2940 | int i; | |
bd5635a1 RP |
2941 | |
2942 | sal.line = sal.pc = sal.end = 0; | |
2943 | sal.symtab = 0; | |
2944 | ||
2945 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
2946 | are breakpointed. */ | |
2947 | ||
2948 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2949 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2950 | { | |
2951 | /* Grab all active catch clauses. */ | |
2952 | sals = get_catch_sals (0); | |
2953 | } | |
2954 | else | |
2955 | { | |
2956 | /* Grab selected catch clauses. */ | |
fe675038 | 2957 | error ("catch NAME not implemented"); |
bdbd5f50 JG |
2958 | #if 0 |
2959 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 | 2960 | sals = map_catch_names (arg, catch_breakpoint); |
bdbd5f50 | 2961 | #endif |
bd5635a1 RP |
2962 | } |
2963 | ||
2964 | if (! sals.nelts) | |
2965 | return; | |
2966 | ||
2967 | save_arg = arg; | |
2968 | for (i = 0; i < sals.nelts; i++) | |
2969 | { | |
30875e1c | 2970 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
2971 | |
2972 | while (arg && *arg) | |
2973 | { | |
2974 | if (arg[0] == 'i' && arg[1] == 'f' | |
2975 | && (arg[2] == ' ' || arg[2] == '\t')) | |
30875e1c SG |
2976 | cond = parse_exp_1 ((arg += 2, &arg), |
2977 | block_for_pc (sals.sals[i].pc), 0); | |
bd5635a1 RP |
2978 | else |
2979 | error ("Junk at end of arguments."); | |
2980 | } | |
2981 | arg = save_arg; | |
bd5635a1 RP |
2982 | } |
2983 | ||
2984 | for (i = 0; i < sals.nelts; i++) | |
2985 | { | |
2986 | sal = sals.sals[i]; | |
2987 | ||
2988 | if (from_tty) | |
2989 | describe_other_breakpoints (sal.pc); | |
2990 | ||
2991 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
2992 | set_breakpoint_count (breakpoint_count + 1); |
2993 | b->number = breakpoint_count; | |
2994 | b->type = bp_breakpoint; | |
bd5635a1 | 2995 | b->cond = cond; |
30875e1c SG |
2996 | b->enable = enabled; |
2997 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 | 2998 | |
d889f6b7 | 2999 | mention (b); |
bd5635a1 RP |
3000 | } |
3001 | ||
3002 | if (sals.nelts > 1) | |
3003 | { | |
199b2450 TL |
3004 | printf_unfiltered ("Multiple breakpoints were set.\n"); |
3005 | printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 3006 | } |
c8950965 | 3007 | free ((PTR)sals.sals); |
bd5635a1 RP |
3008 | } |
3009 | ||
bdbd5f50 JG |
3010 | #if 0 |
3011 | /* These aren't used; I don't know what they were for. */ | |
bd5635a1 RP |
3012 | /* Disable breakpoints on all catch clauses described in ARGS. */ |
3013 | static void | |
3014 | disable_catch (args) | |
3015 | char *args; | |
3016 | { | |
3017 | /* Map the disable command to catch clauses described in ARGS. */ | |
3018 | } | |
3019 | ||
3020 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
3021 | static void | |
3022 | enable_catch (args) | |
3023 | char *args; | |
3024 | { | |
3025 | /* Map the disable command to catch clauses described in ARGS. */ | |
3026 | } | |
3027 | ||
3028 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
3029 | static void | |
3030 | delete_catch (args) | |
3031 | char *args; | |
3032 | { | |
3033 | /* Map the delete command to catch clauses described in ARGS. */ | |
3034 | } | |
bdbd5f50 | 3035 | #endif /* 0 */ |
bd5635a1 RP |
3036 | |
3037 | static void | |
3038 | catch_command (arg, from_tty) | |
3039 | char *arg; | |
3040 | int from_tty; | |
3041 | { | |
3042 | catch_command_1 (arg, 0, from_tty); | |
3043 | } | |
3044 | \f | |
3045 | static void | |
3046 | clear_command (arg, from_tty) | |
3047 | char *arg; | |
3048 | int from_tty; | |
3049 | { | |
3050 | register struct breakpoint *b, *b1; | |
3051 | struct symtabs_and_lines sals; | |
3052 | struct symtab_and_line sal; | |
3053 | register struct breakpoint *found; | |
3054 | int i; | |
3055 | ||
3056 | if (arg) | |
3057 | { | |
3058 | sals = decode_line_spec (arg, 1); | |
3059 | } | |
3060 | else | |
3061 | { | |
3062 | sals.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); | |
3063 | sal.line = default_breakpoint_line; | |
3064 | sal.symtab = default_breakpoint_symtab; | |
3065 | sal.pc = 0; | |
3066 | if (sal.symtab == 0) | |
3067 | error ("No source file specified."); | |
3068 | ||
3069 | sals.sals[0] = sal; | |
3070 | sals.nelts = 1; | |
3071 | } | |
3072 | ||
3073 | for (i = 0; i < sals.nelts; i++) | |
3074 | { | |
3075 | /* If exact pc given, clear bpts at that pc. | |
3076 | But if sal.pc is zero, clear all bpts on specified line. */ | |
3077 | sal = sals.sals[i]; | |
3078 | found = (struct breakpoint *) 0; | |
3079 | while (breakpoint_chain | |
d889f6b7 JK |
3080 | && (sal.pc |
3081 | ? breakpoint_chain->address == sal.pc | |
3082 | : (breakpoint_chain->source_file != NULL | |
3083 | && sal.symtab != NULL | |
3084 | && STREQ (breakpoint_chain->source_file, | |
3085 | sal.symtab->filename) | |
bd5635a1 RP |
3086 | && breakpoint_chain->line_number == sal.line))) |
3087 | { | |
3088 | b1 = breakpoint_chain; | |
3089 | breakpoint_chain = b1->next; | |
3090 | b1->next = found; | |
3091 | found = b1; | |
3092 | } | |
3093 | ||
3094 | ALL_BREAKPOINTS (b) | |
3095 | while (b->next | |
30875e1c | 3096 | && b->next->type != bp_watchpoint |
999dd04b | 3097 | && b->next->type != bp_hardware_watchpoint |
11054881 KH |
3098 | && b->next->type != bp_read_watchpoint |
3099 | && b->next->type != bp_access_watchpoint | |
d889f6b7 JK |
3100 | && (sal.pc |
3101 | ? b->next->address == sal.pc | |
3102 | : (b->next->source_file != NULL | |
3103 | && sal.symtab != NULL | |
3104 | && STREQ (b->next->source_file, sal.symtab->filename) | |
bd5635a1 RP |
3105 | && b->next->line_number == sal.line))) |
3106 | { | |
3107 | b1 = b->next; | |
3108 | b->next = b1->next; | |
3109 | b1->next = found; | |
3110 | found = b1; | |
3111 | } | |
3112 | ||
3113 | if (found == 0) | |
3114 | { | |
3115 | if (arg) | |
3116 | error ("No breakpoint at %s.", arg); | |
3117 | else | |
3118 | error ("No breakpoint at this line."); | |
3119 | } | |
3120 | ||
3121 | if (found->next) from_tty = 1; /* Always report if deleted more than one */ | |
199b2450 | 3122 | if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); |
6c803036 | 3123 | breakpoints_changed (); |
bd5635a1 RP |
3124 | while (found) |
3125 | { | |
199b2450 | 3126 | if (from_tty) printf_unfiltered ("%d ", found->number); |
bd5635a1 RP |
3127 | b1 = found->next; |
3128 | delete_breakpoint (found); | |
3129 | found = b1; | |
3130 | } | |
199b2450 | 3131 | if (from_tty) putchar_unfiltered ('\n'); |
bd5635a1 | 3132 | } |
c8950965 | 3133 | free ((PTR)sals.sals); |
bd5635a1 RP |
3134 | } |
3135 | \f | |
3136 | /* Delete breakpoint in BS if they are `delete' breakpoints. | |
3137 | This is called after any breakpoint is hit, or after errors. */ | |
3138 | ||
3139 | void | |
3140 | breakpoint_auto_delete (bs) | |
3141 | bpstat bs; | |
3142 | { | |
3143 | for (; bs; bs = bs->next) | |
cef4c2e7 PS |
3144 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == delete |
3145 | && bs->stop) | |
bd5635a1 RP |
3146 | delete_breakpoint (bs->breakpoint_at); |
3147 | } | |
3148 | ||
3149 | /* Delete a breakpoint and clean up all traces of it in the data structures. */ | |
3150 | ||
30875e1c | 3151 | void |
bd5635a1 RP |
3152 | delete_breakpoint (bpt) |
3153 | struct breakpoint *bpt; | |
3154 | { | |
3155 | register struct breakpoint *b; | |
3156 | register bpstat bs; | |
3157 | ||
3158 | if (bpt->inserted) | |
999dd04b JL |
3159 | remove_breakpoint (bpt); |
3160 | ||
bd5635a1 RP |
3161 | if (breakpoint_chain == bpt) |
3162 | breakpoint_chain = bpt->next; | |
3163 | ||
3164 | ALL_BREAKPOINTS (b) | |
3165 | if (b->next == bpt) | |
3166 | { | |
3167 | b->next = bpt->next; | |
3168 | break; | |
3169 | } | |
3170 | ||
3171 | check_duplicates (bpt->address); | |
fe675038 JK |
3172 | /* If this breakpoint was inserted, and there is another breakpoint |
3173 | at the same address, we need to insert the other breakpoint. */ | |
999dd04b | 3174 | if (bpt->inserted |
11054881 KH |
3175 | && bpt->type != bp_hardware_watchpoint |
3176 | && bpt->type != bp_read_watchpoint | |
3177 | && bpt->type != bp_access_watchpoint) | |
fe675038 JK |
3178 | { |
3179 | ALL_BREAKPOINTS (b) | |
ebad9e90 JK |
3180 | if (b->address == bpt->address |
3181 | && !b->duplicate | |
3182 | && b->enable != disabled) | |
fe675038 JK |
3183 | { |
3184 | int val; | |
3185 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
3186 | if (val != 0) | |
3187 | { | |
05052b63 | 3188 | target_terminal_ours_for_output (); |
199b2450 | 3189 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
fe675038 JK |
3190 | memory_error (val, b->address); /* which bombs us out */ |
3191 | } | |
3192 | else | |
3193 | b->inserted = 1; | |
3194 | } | |
3195 | } | |
bd5635a1 RP |
3196 | |
3197 | free_command_lines (&bpt->commands); | |
3198 | if (bpt->cond) | |
d889f6b7 | 3199 | free (bpt->cond); |
bd5635a1 | 3200 | if (bpt->cond_string != NULL) |
d889f6b7 | 3201 | free (bpt->cond_string); |
bd5635a1 | 3202 | if (bpt->addr_string != NULL) |
d889f6b7 | 3203 | free (bpt->addr_string); |
0eaaa46a | 3204 | if (bpt->exp_string != NULL) |
d889f6b7 JK |
3205 | free (bpt->exp_string); |
3206 | if (bpt->source_file != NULL) | |
3207 | free (bpt->source_file); | |
bd5635a1 | 3208 | |
6c803036 | 3209 | breakpoints_changed (); |
bd5635a1 RP |
3210 | |
3211 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
05052b63 JK |
3212 | /* FIXME, how can we find all bpstat's? |
3213 | We just check stop_bpstat for now. */ | |
bd5635a1 RP |
3214 | for (bs = stop_bpstat; bs; bs = bs->next) |
3215 | if (bs->breakpoint_at == bpt) | |
3216 | bs->breakpoint_at = NULL; | |
c8950965 | 3217 | free ((PTR)bpt); |
bd5635a1 RP |
3218 | } |
3219 | ||
bd5635a1 RP |
3220 | static void |
3221 | delete_command (arg, from_tty) | |
3222 | char *arg; | |
3223 | int from_tty; | |
3224 | { | |
3225 | ||
3226 | if (arg == 0) | |
3227 | { | |
3228 | /* Ask user only if there are some breakpoints to delete. */ | |
3229 | if (!from_tty | |
3230 | || (breakpoint_chain && query ("Delete all breakpoints? ", 0, 0))) | |
3231 | { | |
3232 | /* No arg; clear all breakpoints. */ | |
3233 | while (breakpoint_chain) | |
3234 | delete_breakpoint (breakpoint_chain); | |
3235 | } | |
3236 | } | |
3237 | else | |
3238 | map_breakpoint_numbers (arg, delete_breakpoint); | |
3239 | } | |
3240 | ||
bdbd5f50 JG |
3241 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
3242 | The value we return ends up being the return value from catch_errors. | |
3243 | Unused in this case. */ | |
3244 | ||
3245 | static int | |
bd5635a1 | 3246 | breakpoint_re_set_one (bint) |
bdbd5f50 | 3247 | char *bint; |
bd5635a1 RP |
3248 | { |
3249 | struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */ | |
11054881 | 3250 | struct value *mark; |
bd5635a1 RP |
3251 | int i; |
3252 | struct symtabs_and_lines sals; | |
bd5635a1 | 3253 | char *s; |
30875e1c | 3254 | enum enable save_enable; |
bd5635a1 | 3255 | |
80ba48f5 | 3256 | switch (b->type) |
bd5635a1 | 3257 | { |
80ba48f5 | 3258 | case bp_breakpoint: |
11054881 | 3259 | case bp_hardware_breakpoint: |
80ba48f5 SG |
3260 | if (b->addr_string == NULL) |
3261 | { | |
3262 | /* Anything without a string can't be re-set. */ | |
3263 | delete_breakpoint (b); | |
3264 | return 0; | |
3265 | } | |
30875e1c SG |
3266 | /* In case we have a problem, disable this breakpoint. We'll restore |
3267 | its status if we succeed. */ | |
3268 | save_enable = b->enable; | |
3269 | b->enable = disabled; | |
3270 | ||
bd5635a1 | 3271 | s = b->addr_string; |
d889f6b7 | 3272 | sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
3273 | for (i = 0; i < sals.nelts; i++) |
3274 | { | |
30875e1c | 3275 | resolve_sal_pc (&sals.sals[i]); |
fee933f1 RP |
3276 | |
3277 | /* Reparse conditions, they might contain references to the | |
3278 | old symtab. */ | |
3279 | if (b->cond_string != NULL) | |
3280 | { | |
3281 | s = b->cond_string; | |
3282 | if (b->cond) | |
3283 | free ((PTR)b->cond); | |
3284 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); | |
3285 | } | |
3286 | ||
3287 | /* We need to re-set the breakpoint if the address changes...*/ | |
d889f6b7 | 3288 | if (b->address != sals.sals[i].pc |
fee933f1 RP |
3289 | /* ...or new and old breakpoints both have source files, and |
3290 | the source file name or the line number changes... */ | |
d889f6b7 JK |
3291 | || (b->source_file != NULL |
3292 | && sals.sals[i].symtab != NULL | |
3293 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
3294 | || b->line_number != sals.sals[i].line) | |
fee933f1 RP |
3295 | ) |
3296 | /* ...or we switch between having a source file and not having | |
3297 | one. */ | |
3298 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
3299 | ) | |
bd5635a1 | 3300 | { |
d889f6b7 JK |
3301 | if (b->source_file != NULL) |
3302 | free (b->source_file); | |
3303 | if (sals.sals[i].symtab == NULL) | |
3304 | b->source_file = NULL; | |
3305 | else | |
3306 | b->source_file = | |
3307 | savestring (sals.sals[i].symtab->filename, | |
3308 | strlen (sals.sals[i].symtab->filename)); | |
8537ba60 SG |
3309 | b->line_number = sals.sals[i].line; |
3310 | b->address = sals.sals[i].pc; | |
bd5635a1 | 3311 | |
8537ba60 | 3312 | check_duplicates (b->address); |
bd5635a1 | 3313 | |
8537ba60 | 3314 | mention (b); |
6c803036 JK |
3315 | |
3316 | /* Might be better to do this just once per breakpoint_re_set, | |
3317 | rather than once for every breakpoint. */ | |
3318 | breakpoints_changed (); | |
8537ba60 | 3319 | } |
30875e1c | 3320 | b->enable = save_enable; /* Restore it, this worked. */ |
bd5635a1 | 3321 | } |
c8950965 | 3322 | free ((PTR)sals.sals); |
80ba48f5 | 3323 | break; |
2d313932 | 3324 | |
80ba48f5 | 3325 | case bp_watchpoint: |
999dd04b | 3326 | case bp_hardware_watchpoint: |
11054881 KH |
3327 | case bp_read_watchpoint: |
3328 | case bp_access_watchpoint: | |
0eaaa46a | 3329 | innermost_block = NULL; |
0a97f6c4 JK |
3330 | /* The issue arises of what context to evaluate this in. The same |
3331 | one as when it was set, but what does that mean when symbols have | |
3332 | been re-read? We could save the filename and functionname, but | |
3333 | if the context is more local than that, the best we could do would | |
3334 | be something like how many levels deep and which index at that | |
3335 | particular level, but that's going to be less stable than filenames | |
3336 | or functionnames. */ | |
3337 | /* So for now, just use a global context. */ | |
0eaaa46a JK |
3338 | b->exp = parse_expression (b->exp_string); |
3339 | b->exp_valid_block = innermost_block; | |
11054881 | 3340 | mark = value_mark (); |
0eaaa46a JK |
3341 | b->val = evaluate_expression (b->exp); |
3342 | release_value (b->val); | |
3343 | if (VALUE_LAZY (b->val)) | |
3344 | value_fetch_lazy (b->val); | |
3345 | ||
2d313932 JK |
3346 | if (b->cond_string != NULL) |
3347 | { | |
3348 | s = b->cond_string; | |
3349 | b->cond = parse_exp_1 (&s, (struct block *)0, 0); | |
3350 | } | |
cabd4da6 JK |
3351 | if (b->enable == enabled) |
3352 | mention (b); | |
11054881 | 3353 | value_free_to_mark (mark); |
80ba48f5 | 3354 | break; |
2d313932 | 3355 | |
80ba48f5 SG |
3356 | default: |
3357 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
2d313932 | 3358 | /* fall through */ |
80ba48f5 SG |
3359 | case bp_until: |
3360 | case bp_finish: | |
3361 | case bp_longjmp: | |
3362 | case bp_longjmp_resume: | |
999dd04b | 3363 | case bp_watchpoint_scope: |
cf3e377e | 3364 | case bp_call_dummy: |
80ba48f5 SG |
3365 | delete_breakpoint (b); |
3366 | break; | |
bd5635a1 | 3367 | } |
80ba48f5 | 3368 | |
bdbd5f50 | 3369 | return 0; |
bd5635a1 RP |
3370 | } |
3371 | ||
3372 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
3373 | void | |
3374 | breakpoint_re_set () | |
3375 | { | |
cba0d141 | 3376 | struct breakpoint *b, *temp; |
30875e1c SG |
3377 | static char message1[] = "Error in re-setting breakpoint %d:\n"; |
3378 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 | 3379 | |
cba0d141 | 3380 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 3381 | { |
2d313932 | 3382 | sprintf (message, message1, b->number); /* Format possible error msg */ |
fe675038 JK |
3383 | catch_errors (breakpoint_re_set_one, (char *) b, message, |
3384 | RETURN_MASK_ALL); | |
bd5635a1 RP |
3385 | } |
3386 | ||
80ba48f5 SG |
3387 | create_longjmp_breakpoint("longjmp"); |
3388 | create_longjmp_breakpoint("_longjmp"); | |
3389 | create_longjmp_breakpoint("siglongjmp"); | |
3390 | create_longjmp_breakpoint(NULL); | |
3391 | ||
1eeba686 PB |
3392 | #if 0 |
3393 | /* Took this out (temporaliy at least), since it produces an extra | |
3394 | blank line at startup. This messes up the gdbtests. -PB */ | |
bd5635a1 RP |
3395 | /* Blank line to finish off all those mention() messages we just printed. */ |
3396 | printf_filtered ("\n"); | |
1eeba686 | 3397 | #endif |
bd5635a1 RP |
3398 | } |
3399 | \f | |
3400 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
3401 | If from_tty is nonzero, it prints a message to that effect, | |
3402 | which ends with a period (no newline). */ | |
3403 | ||
3404 | void | |
3405 | set_ignore_count (bptnum, count, from_tty) | |
3406 | int bptnum, count, from_tty; | |
3407 | { | |
3408 | register struct breakpoint *b; | |
3409 | ||
3410 | if (count < 0) | |
3411 | count = 0; | |
3412 | ||
3413 | ALL_BREAKPOINTS (b) | |
3414 | if (b->number == bptnum) | |
3415 | { | |
3416 | b->ignore_count = count; | |
3417 | if (!from_tty) | |
3418 | return; | |
3419 | else if (count == 0) | |
423e9664 SG |
3420 | printf_filtered ("Will stop next time breakpoint %d is reached.", |
3421 | bptnum); | |
bd5635a1 | 3422 | else if (count == 1) |
423e9664 SG |
3423 | printf_filtered ("Will ignore next crossing of breakpoint %d.", |
3424 | bptnum); | |
bd5635a1 | 3425 | else |
423e9664 | 3426 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", |
bd5635a1 | 3427 | count, bptnum); |
6c803036 | 3428 | breakpoints_changed (); |
bd5635a1 RP |
3429 | return; |
3430 | } | |
3431 | ||
3432 | error ("No breakpoint number %d.", bptnum); | |
3433 | } | |
3434 | ||
3435 | /* Clear the ignore counts of all breakpoints. */ | |
3436 | void | |
3437 | breakpoint_clear_ignore_counts () | |
3438 | { | |
3439 | struct breakpoint *b; | |
3440 | ||
3441 | ALL_BREAKPOINTS (b) | |
3442 | b->ignore_count = 0; | |
3443 | } | |
3444 | ||
3445 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
3446 | ||
3447 | static void | |
3448 | ignore_command (args, from_tty) | |
3449 | char *args; | |
3450 | int from_tty; | |
3451 | { | |
3452 | char *p = args; | |
3453 | register int num; | |
3454 | ||
3455 | if (p == 0) | |
3456 | error_no_arg ("a breakpoint number"); | |
3457 | ||
3458 | num = get_number (&p); | |
3459 | ||
3460 | if (*p == 0) | |
3461 | error ("Second argument (specified ignore-count) is missing."); | |
3462 | ||
bdbd5f50 JG |
3463 | set_ignore_count (num, |
3464 | longest_to_int (value_as_long (parse_and_eval (p))), | |
3465 | from_tty); | |
423e9664 | 3466 | printf_filtered ("\n"); |
6c803036 | 3467 | breakpoints_changed (); |
bd5635a1 RP |
3468 | } |
3469 | \f | |
3470 | /* Call FUNCTION on each of the breakpoints | |
3471 | whose numbers are given in ARGS. */ | |
3472 | ||
3473 | static void | |
3474 | map_breakpoint_numbers (args, function) | |
3475 | char *args; | |
30875e1c | 3476 | void (*function) PARAMS ((struct breakpoint *)); |
bd5635a1 RP |
3477 | { |
3478 | register char *p = args; | |
3479 | char *p1; | |
3480 | register int num; | |
3481 | register struct breakpoint *b; | |
3482 | ||
3483 | if (p == 0) | |
3484 | error_no_arg ("one or more breakpoint numbers"); | |
3485 | ||
3486 | while (*p) | |
3487 | { | |
3488 | p1 = p; | |
3489 | ||
3490 | num = get_number (&p1); | |
3491 | ||
3492 | ALL_BREAKPOINTS (b) | |
3493 | if (b->number == num) | |
3494 | { | |
999dd04b | 3495 | struct breakpoint *related_breakpoint = b->related_breakpoint; |
bd5635a1 | 3496 | function (b); |
999dd04b JL |
3497 | if (related_breakpoint) |
3498 | function (related_breakpoint); | |
bd5635a1 RP |
3499 | goto win; |
3500 | } | |
199b2450 | 3501 | printf_unfiltered ("No breakpoint number %d.\n", num); |
bd5635a1 RP |
3502 | win: |
3503 | p = p1; | |
3504 | } | |
3505 | } | |
3506 | ||
3507 | static void | |
3508 | enable_breakpoint (bpt) | |
3509 | struct breakpoint *bpt; | |
3510 | { | |
fee933f1 | 3511 | FRAME save_selected_frame = NULL; |
fa99ebe1 | 3512 | int save_selected_frame_level = -1; |
11054881 KH |
3513 | int target_resources_ok, other_type_used; |
3514 | struct value *mark; | |
fa99ebe1 | 3515 | |
11054881 KH |
3516 | if (bpt->type == bp_hardware_breakpoint) |
3517 | { | |
3518 | int i; | |
3519 | i = hw_breakpoint_used_count(); | |
3520 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3521 | bp_hardware_breakpoint, i+1, 0); | |
3522 | if (target_resources_ok == 0) | |
3523 | error ("No hardware breakpoint support in the target."); | |
3524 | else if (target_resources_ok < 0) | |
3525 | error ("Hardware breakpoints used exceeds limit."); | |
3526 | } | |
bd5635a1 | 3527 | bpt->enable = enabled; |
6c803036 | 3528 | breakpoints_changed (); |
bd5635a1 | 3529 | check_duplicates (bpt->address); |
11054881 KH |
3530 | |
3531 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3532 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
bd5635a1 | 3533 | { |
fa99ebe1 | 3534 | if (bpt->exp_valid_block != NULL) |
f266e564 | 3535 | { |
999dd04b | 3536 | FRAME fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); |
fa99ebe1 JK |
3537 | if (fr == NULL) |
3538 | { | |
3539 | printf_filtered ("\ | |
f266e564 JK |
3540 | Cannot enable watchpoint %d because the block in which its expression\n\ |
3541 | is valid is not currently in scope.\n", bpt->number); | |
fa99ebe1 JK |
3542 | bpt->enable = disabled; |
3543 | return; | |
3544 | } | |
999dd04b | 3545 | |
fa99ebe1 JK |
3546 | save_selected_frame = selected_frame; |
3547 | save_selected_frame_level = selected_frame_level; | |
3548 | select_frame (fr, -1); | |
f266e564 JK |
3549 | } |
3550 | ||
bd5635a1 | 3551 | value_free (bpt->val); |
11054881 | 3552 | mark = value_mark (); |
bd5635a1 RP |
3553 | bpt->val = evaluate_expression (bpt->exp); |
3554 | release_value (bpt->val); | |
2d313932 JK |
3555 | if (VALUE_LAZY (bpt->val)) |
3556 | value_fetch_lazy (bpt->val); | |
fa99ebe1 | 3557 | |
11054881 KH |
3558 | if (bpt->type == bp_hardware_watchpoint || |
3559 | bpt->type == bp_read_watchpoint || | |
3560 | bpt->type == bp_access_watchpoint) | |
3561 | { | |
3562 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3563 | int mem_cnt = can_use_hardware_watchpoint(bpt->val); | |
3564 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3565 | bpt->type, i+mem_cnt, other_type_used); | |
3566 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
3567 | bp_watchpoint in the following condition */ | |
3568 | if (target_resources_ok < 0) | |
3569 | { | |
3570 | printf_filtered("\ | |
3571 | Cannot enable watchpoint %d because target watch resources\n\ | |
3572 | have been allocated for other watchpoints.\n", bpt->number); | |
3573 | bpt->enable = disabled; | |
3574 | value_free_to_mark (mark); | |
3575 | return; | |
3576 | } | |
3577 | } | |
3578 | ||
fa99ebe1 JK |
3579 | if (save_selected_frame_level >= 0) |
3580 | select_frame (save_selected_frame, save_selected_frame_level); | |
11054881 | 3581 | value_free_to_mark (mark); |
bd5635a1 RP |
3582 | } |
3583 | } | |
3584 | ||
bdbd5f50 | 3585 | /* ARGSUSED */ |
bd5635a1 RP |
3586 | static void |
3587 | enable_command (args, from_tty) | |
3588 | char *args; | |
3589 | int from_tty; | |
3590 | { | |
3591 | struct breakpoint *bpt; | |
3592 | if (args == 0) | |
3593 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3594 | switch (bpt->type) |
3595 | { | |
3596 | case bp_breakpoint: | |
11054881 | 3597 | case bp_hardware_breakpoint: |
423e9664 | 3598 | case bp_watchpoint: |
999dd04b | 3599 | case bp_hardware_watchpoint: |
11054881 KH |
3600 | case bp_read_watchpoint: |
3601 | case bp_access_watchpoint: | |
423e9664 SG |
3602 | enable_breakpoint (bpt); |
3603 | default: | |
3604 | continue; | |
3605 | } | |
bd5635a1 RP |
3606 | else |
3607 | map_breakpoint_numbers (args, enable_breakpoint); | |
3608 | } | |
3609 | ||
3610 | static void | |
3611 | disable_breakpoint (bpt) | |
3612 | struct breakpoint *bpt; | |
3613 | { | |
999dd04b JL |
3614 | /* Never disable a watchpoint scope breakpoint; we want to |
3615 | hit them when we leave scope so we can delete both the | |
3616 | watchpoint and its scope breakpoint at that time. */ | |
3617 | if (bpt->type == bp_watchpoint_scope) | |
3618 | return; | |
3619 | ||
bd5635a1 RP |
3620 | bpt->enable = disabled; |
3621 | ||
6c803036 | 3622 | breakpoints_changed (); |
bd5635a1 RP |
3623 | |
3624 | check_duplicates (bpt->address); | |
3625 | } | |
3626 | ||
bdbd5f50 | 3627 | /* ARGSUSED */ |
bd5635a1 RP |
3628 | static void |
3629 | disable_command (args, from_tty) | |
3630 | char *args; | |
3631 | int from_tty; | |
3632 | { | |
3633 | register struct breakpoint *bpt; | |
3634 | if (args == 0) | |
3635 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3636 | switch (bpt->type) |
3637 | { | |
3638 | case bp_breakpoint: | |
11054881 KH |
3639 | case bp_hardware_breakpoint: |
3640 | case bp_watchpoint: | |
3641 | case bp_hardware_watchpoint: | |
3642 | case bp_read_watchpoint: | |
3643 | case bp_access_watchpoint: | |
423e9664 SG |
3644 | disable_breakpoint (bpt); |
3645 | default: | |
3646 | continue; | |
3647 | } | |
bd5635a1 RP |
3648 | else |
3649 | map_breakpoint_numbers (args, disable_breakpoint); | |
3650 | } | |
3651 | ||
3652 | static void | |
3653 | enable_once_breakpoint (bpt) | |
3654 | struct breakpoint *bpt; | |
3655 | { | |
11054881 KH |
3656 | FRAME save_selected_frame = NULL; |
3657 | int save_selected_frame_level = -1; | |
3658 | int target_resources_ok, other_type_used; | |
3659 | struct value *mark; | |
3660 | ||
3661 | if (bpt->type == bp_hardware_breakpoint) | |
3662 | { | |
3663 | int i; | |
3664 | i = hw_breakpoint_used_count(); | |
3665 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3666 | bp_hardware_breakpoint, i+1, 0); | |
3667 | if (target_resources_ok == 0) | |
3668 | error ("No hardware breakpoint support in the target."); | |
3669 | else if (target_resources_ok < 0) | |
3670 | error ("Hardware breakpoints used exceeds limit."); | |
3671 | } | |
3672 | ||
30875e1c SG |
3673 | bpt->enable = enabled; |
3674 | bpt->disposition = disable; | |
bd5635a1 | 3675 | check_duplicates (bpt->address); |
6c803036 | 3676 | breakpoints_changed (); |
11054881 KH |
3677 | |
3678 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3679 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
3680 | { | |
3681 | if (bpt->exp_valid_block != NULL) | |
3682 | { | |
3683 | FRAME fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
3684 | if (fr == NULL) | |
3685 | { | |
3686 | printf_filtered ("\ | |
3687 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
3688 | is valid is not currently in scope.\n", bpt->number); | |
3689 | bpt->enable = disabled; | |
3690 | return; | |
3691 | } | |
3692 | ||
3693 | save_selected_frame = selected_frame; | |
3694 | save_selected_frame_level = selected_frame_level; | |
3695 | select_frame (fr, -1); | |
3696 | } | |
3697 | ||
3698 | value_free (bpt->val); | |
3699 | mark = value_mark (); | |
3700 | bpt->val = evaluate_expression (bpt->exp); | |
3701 | release_value (bpt->val); | |
3702 | if (VALUE_LAZY (bpt->val)) | |
3703 | value_fetch_lazy (bpt->val); | |
3704 | ||
3705 | if (bpt->type == bp_hardware_watchpoint || | |
3706 | bpt->type == bp_read_watchpoint || | |
3707 | bpt->type == bp_access_watchpoint) | |
3708 | { | |
3709 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3710 | int mem_cnt = can_use_hardware_watchpoint(bpt->val); | |
3711 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3712 | bpt->type, i+mem_cnt, other_type_used); | |
3713 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
3714 | bp_watchpoint in the following condition */ | |
3715 | if (target_resources_ok < 0) | |
3716 | { | |
3717 | printf_filtered("\ | |
3718 | Cannot enable watchpoint %d because target watch resources\n\ | |
3719 | have been allocated for other watchpoints.\n", bpt->number); | |
3720 | bpt->enable = disabled; | |
3721 | value_free_to_mark (mark); | |
3722 | } | |
3723 | } | |
3724 | ||
3725 | if (save_selected_frame_level >= 0) | |
3726 | select_frame (save_selected_frame, save_selected_frame_level); | |
3727 | value_free_to_mark (mark); | |
3728 | } | |
bd5635a1 RP |
3729 | } |
3730 | ||
bdbd5f50 | 3731 | /* ARGSUSED */ |
bd5635a1 RP |
3732 | static void |
3733 | enable_once_command (args, from_tty) | |
3734 | char *args; | |
3735 | int from_tty; | |
3736 | { | |
3737 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
3738 | } | |
3739 | ||
3740 | static void | |
3741 | enable_delete_breakpoint (bpt) | |
3742 | struct breakpoint *bpt; | |
3743 | { | |
30875e1c SG |
3744 | bpt->enable = enabled; |
3745 | bpt->disposition = delete; | |
bd5635a1 RP |
3746 | |
3747 | check_duplicates (bpt->address); | |
6c803036 | 3748 | breakpoints_changed (); |
bd5635a1 RP |
3749 | } |
3750 | ||
bdbd5f50 | 3751 | /* ARGSUSED */ |
bd5635a1 RP |
3752 | static void |
3753 | enable_delete_command (args, from_tty) | |
3754 | char *args; | |
3755 | int from_tty; | |
3756 | { | |
3757 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
3758 | } | |
3759 | \f | |
3760 | /* | |
3761 | * Use default_breakpoint_'s, or nothing if they aren't valid. | |
3762 | */ | |
3763 | struct symtabs_and_lines | |
3764 | decode_line_spec_1 (string, funfirstline) | |
3765 | char *string; | |
3766 | int funfirstline; | |
3767 | { | |
3768 | struct symtabs_and_lines sals; | |
3769 | if (string == 0) | |
3770 | error ("Empty line specification."); | |
3771 | if (default_breakpoint_valid) | |
3772 | sals = decode_line_1 (&string, funfirstline, | |
d889f6b7 JK |
3773 | default_breakpoint_symtab, default_breakpoint_line, |
3774 | (char ***)NULL); | |
bd5635a1 | 3775 | else |
d889f6b7 JK |
3776 | sals = decode_line_1 (&string, funfirstline, |
3777 | (struct symtab *)NULL, 0, (char ***)NULL); | |
bd5635a1 RP |
3778 | if (*string) |
3779 | error ("Junk at end of line specification: %s", string); | |
3780 | return sals; | |
3781 | } | |
3782 | \f | |
bd5635a1 RP |
3783 | void |
3784 | _initialize_breakpoint () | |
3785 | { | |
3786 | breakpoint_chain = 0; | |
3787 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
3788 | before a breakpoint is set. */ | |
3789 | breakpoint_count = 0; | |
3790 | ||
3791 | add_com ("ignore", class_breakpoint, ignore_command, | |
3792 | "Set ignore-count of breakpoint number N to COUNT."); | |
3793 | ||
3794 | add_com ("commands", class_breakpoint, commands_command, | |
3795 | "Set commands to be executed when a breakpoint is hit.\n\ | |
3796 | Give breakpoint number as argument after \"commands\".\n\ | |
3797 | With no argument, the targeted breakpoint is the last one set.\n\ | |
3798 | The commands themselves follow starting on the next line.\n\ | |
3799 | Type a line containing \"end\" to indicate the end of them.\n\ | |
3800 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
3801 | then no output is printed when it is hit, except what the commands print."); | |
3802 | ||
3803 | add_com ("condition", class_breakpoint, condition_command, | |
3804 | "Specify breakpoint number N to break only if COND is true.\n\ | |
d3b9c0df JG |
3805 | N is an integer; COND is an expression to be evaluated whenever\n\ |
3806 | breakpoint N is reached. "); | |
bd5635a1 RP |
3807 | |
3808 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
3809 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c4de6b30 JK |
3810 | Like \"break\" except the breakpoint is only temporary,\n\ |
3811 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
3812 | by using \"enable delete\" on the breakpoint number."); | |
bd5635a1 | 3813 | |
11054881 KH |
3814 | add_com ("hbreak", class_breakpoint, hbreak_command, |
3815 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3816 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
3817 | some target hardware may not have this support."); | |
3818 | ||
3819 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
3820 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3821 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
3822 | so it will be deleted when hit."); | |
3823 | ||
bd5635a1 RP |
3824 | add_prefix_cmd ("enable", class_breakpoint, enable_command, |
3825 | "Enable some breakpoints.\n\ | |
3826 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3827 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
3828 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3829 | With a subcommand you can enable temporarily.", | |
3830 | &enablelist, "enable ", 1, &cmdlist); | |
3831 | ||
3832 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
3833 | "Enable some breakpoints.\n\ | |
3834 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3835 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3836 | May be abbreviated to simply \"enable\".\n", | |
3837 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); | |
3838 | ||
3839 | add_cmd ("once", no_class, enable_once_command, | |
3840 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3841 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3842 | &enablebreaklist); |
3843 | ||
3844 | add_cmd ("delete", no_class, enable_delete_command, | |
3845 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3846 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3847 | &enablebreaklist); | |
3848 | ||
3849 | add_cmd ("delete", no_class, enable_delete_command, | |
3850 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3851 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3852 | &enablelist); | |
3853 | ||
3854 | add_cmd ("once", no_class, enable_once_command, | |
3855 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3856 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3857 | &enablelist); |
3858 | ||
3859 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
3860 | "Disable some breakpoints.\n\ | |
3861 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3862 | To disable all breakpoints, give no argument.\n\ | |
3863 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
3864 | &disablelist, "disable ", 1, &cmdlist); | |
3865 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
3866 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
3867 | ||
3868 | add_cmd ("breakpoints", class_alias, disable_command, | |
3869 | "Disable some breakpoints.\n\ | |
3870 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3871 | To disable all breakpoints, give no argument.\n\ | |
3872 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
3873 | This command may be abbreviated \"disable\".", | |
3874 | &disablelist); | |
3875 | ||
3876 | add_prefix_cmd ("delete", class_breakpoint, 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 | \n\ | |
3881 | Also a prefix command for deletion of other GDB objects.\n\ | |
3882 | The \"unset\" command is also an alias for \"delete\".", | |
3883 | &deletelist, "delete ", 1, &cmdlist); | |
3884 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
bd5635a1 RP |
3885 | |
3886 | add_cmd ("breakpoints", class_alias, delete_command, | |
3887 | "Delete some breakpoints or auto-display expressions.\n\ | |
3888 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3889 | To delete all breakpoints, give no argument.\n\ | |
3890 | This command may be abbreviated \"delete\".", | |
3891 | &deletelist); | |
3892 | ||
3893 | add_com ("clear", class_breakpoint, clear_command, | |
3894 | "Clear breakpoint at specified line or function.\n\ | |
3895 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
3896 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
3897 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
3898 | If an address is specified, breakpoints at that address are cleared.\n\n\ | |
3899 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
3900 | is executing in.\n\ | |
3901 | \n\ | |
3902 | See also the \"delete\" command which clears breakpoints by number."); | |
3903 | ||
3904 | add_com ("break", class_breakpoint, break_command, | |
3905 | "Set breakpoint at specified line or function.\n\ | |
3906 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
3907 | If line number is specified, break at start of code for that line.\n\ | |
3908 | If function is specified, break at start of code for that function.\n\ | |
3909 | If an address is specified, break at that exact address.\n\ | |
3910 | With no arg, uses current execution address of selected stack frame.\n\ | |
3911 | This is useful for breaking on return to a stack frame.\n\ | |
3912 | \n\ | |
3913 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
3914 | \n\ | |
3915 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
3916 | add_com_alias ("b", "break", class_run, 1); | |
3917 | add_com_alias ("br", "break", class_run, 1); | |
3918 | add_com_alias ("bre", "break", class_run, 1); | |
3919 | add_com_alias ("brea", "break", class_run, 1); | |
3920 | ||
3921 | add_info ("breakpoints", breakpoints_info, | |
80ba48f5 SG |
3922 | "Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
3923 | The \"Type\" column indicates one of:\n\ | |
423e9664 SG |
3924 | \tbreakpoint - normal breakpoint\n\ |
3925 | \twatchpoint - watchpoint\n\ | |
80ba48f5 SG |
3926 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
3927 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
3928 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
3929 | address and file/line number respectively.\n\n\ | |
3930 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
3931 | are set to the address of the last breakpoint listed.\n\n\ | |
3932 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
3933 | breakpoint set."); | |
3934 | ||
9b280a7f JG |
3935 | #if MAINTENANCE_CMDS |
3936 | ||
3937 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, | |
bd5635a1 | 3938 | "Status of all breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 3939 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
3940 | \tbreakpoint - normal breakpoint\n\ |
3941 | \twatchpoint - watchpoint\n\ | |
3942 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
3943 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
3944 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
3945 | \tfinish - internal breakpoint used by the \"finish\" command\n\ | |
80ba48f5 SG |
3946 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
3947 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
3948 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
3949 | address and file/line number respectively.\n\n\ | |
bd5635a1 RP |
3950 | Convenience variable \"$_\" and default examine address for \"x\"\n\ |
3951 | are set to the address of the last breakpoint listed.\n\n\ | |
3952 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
9b280a7f JG |
3953 | breakpoint set.", |
3954 | &maintenanceinfolist); | |
3955 | ||
3956 | #endif /* MAINTENANCE_CMDS */ | |
bd5635a1 RP |
3957 | |
3958 | add_com ("catch", class_breakpoint, catch_command, | |
3959 | "Set breakpoints to catch exceptions that are raised.\n\ | |
3960 | Argument may be a single exception to catch, multiple exceptions\n\ | |
3961 | to catch, or the default exception \"default\". If no arguments\n\ | |
3962 | are given, breakpoints are set at all exception handlers catch clauses\n\ | |
3963 | within the current scope.\n\ | |
3964 | \n\ | |
3965 | A condition specified for the catch applies to all breakpoints set\n\ | |
3966 | with this command\n\ | |
3967 | \n\ | |
3968 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
3969 | ||
3970 | add_com ("watch", class_breakpoint, watch_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 changes."); | |
3974 | ||
11054881 KH |
3975 | add_com ("rwatch", class_breakpoint, rwatch_command, |
3976 | "Set a read watchpoint for an expression.\n\ | |
3977 | A watchpoint stops execution of your program whenever the value of\n\ | |
3978 | an expression is read."); | |
3979 | ||
3980 | add_com ("awatch", class_breakpoint, awatch_command, | |
3981 | "Set a watchpoint for an expression.\n\ | |
3982 | A watchpoint stops execution of your program whenever the value of\n\ | |
3983 | an expression is either read or written."); | |
3984 | ||
c8950965 JG |
3985 | add_info ("watchpoints", breakpoints_info, |
3986 | "Synonym for ``info breakpoints''."); | |
bd5635a1 | 3987 | } |
1eeba686 | 3988 | |
2d313932 JK |
3989 | /* OK, when we call objfile_relocate, we need to relocate breakpoints |
3990 | too. breakpoint_re_set is not a good choice--for example, if | |
3991 | addr_string contains just a line number without a file name the | |
3992 | breakpoint might get set in a different file. In general, there is | |
3993 | no need to go all the way back to the user's string (though this might | |
3994 | work if some effort were made to canonicalize it), since symtabs and | |
3995 | everything except addresses are still valid. | |
1eeba686 | 3996 | |
2d313932 JK |
3997 | Probably the best way to solve this is to have each breakpoint save |
3998 | the objfile and the section number that was used to set it (if set | |
3999 | by "*addr", probably it is best to use find_pc_line to get a symtab | |
4000 | and use the objfile and block_line_section for that symtab). Then | |
4001 | objfile_relocate can call fixup_breakpoints with the objfile and | |
4002 | the new_offsets, and it can relocate only the appropriate breakpoints. */ | |
1eeba686 | 4003 | |
2d313932 JK |
4004 | #ifdef IBM6000_TARGET |
4005 | /* But for now, just kludge it based on the concept that before an | |
4006 | objfile is relocated the breakpoint is below 0x10000000, and afterwards | |
4007 | it is higher, so that way we only relocate each breakpoint once. */ | |
1eeba686 | 4008 | |
1eeba686 PB |
4009 | void |
4010 | fixup_breakpoints (low, high, delta) | |
4011 | CORE_ADDR low; | |
4012 | CORE_ADDR high; | |
4013 | CORE_ADDR delta; | |
4014 | { | |
4015 | struct breakpoint *b; | |
1eeba686 PB |
4016 | |
4017 | ALL_BREAKPOINTS (b) | |
4018 | { | |
4019 | if (b->address >= low && b->address <= high) | |
4020 | b->address += delta; | |
4021 | } | |
4022 | } | |
4023 | #endif |