Commit | Line | Data |
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bd5635a1 | 1 | /* Everything about breakpoints, for GDB. |
e8bf33c4 | 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995 |
9f577285 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
bdbd5f50 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
bdbd5f50 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
bdbd5f50 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
bdbd5f50 JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 20 | |
bd5635a1 | 21 | #include "defs.h" |
1eeba686 | 22 | #include <ctype.h> |
bd5635a1 RP |
23 | #include "symtab.h" |
24 | #include "frame.h" | |
25 | #include "breakpoint.h" | |
30875e1c | 26 | #include "gdbtypes.h" |
bd5635a1 RP |
27 | #include "expression.h" |
28 | #include "gdbcore.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "value.h" | |
31 | #include "ctype.h" | |
32 | #include "command.h" | |
33 | #include "inferior.h" | |
199b2450 | 34 | #include "thread.h" |
bd5635a1 | 35 | #include "target.h" |
d3b9c0df | 36 | #include "language.h" |
bd5635a1 | 37 | #include <string.h> |
423e9664 | 38 | #include "demangle.h" |
9f577285 | 39 | #include "annotate.h" |
bd5635a1 | 40 | |
30875e1c SG |
41 | /* local function prototypes */ |
42 | ||
43 | static void | |
44 | catch_command_1 PARAMS ((char *, int, int)); | |
45 | ||
46 | static void | |
47 | enable_delete_command PARAMS ((char *, int)); | |
48 | ||
49 | static void | |
50 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
51 | ||
52 | static void | |
53 | enable_once_command PARAMS ((char *, int)); | |
54 | ||
55 | static void | |
56 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
57 | ||
58 | static void | |
59 | disable_command PARAMS ((char *, int)); | |
60 | ||
30875e1c SG |
61 | static void |
62 | enable_command PARAMS ((char *, int)); | |
63 | ||
30875e1c SG |
64 | static void |
65 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); | |
66 | ||
67 | static void | |
68 | ignore_command PARAMS ((char *, int)); | |
69 | ||
70 | static int | |
71 | breakpoint_re_set_one PARAMS ((char *)); | |
72 | ||
73 | static void | |
74 | delete_command PARAMS ((char *, int)); | |
75 | ||
76 | static void | |
77 | clear_command PARAMS ((char *, int)); | |
78 | ||
79 | static void | |
80 | catch_command PARAMS ((char *, int)); | |
81 | ||
82 | static struct symtabs_and_lines | |
83 | get_catch_sals PARAMS ((int)); | |
84 | ||
85 | static void | |
86 | watch_command PARAMS ((char *, int)); | |
87 | ||
999dd04b | 88 | static int |
11054881 | 89 | can_use_hardware_watchpoint PARAMS ((struct value *)); |
999dd04b | 90 | |
30875e1c SG |
91 | static void |
92 | tbreak_command PARAMS ((char *, int)); | |
93 | ||
94 | static void | |
95 | break_command_1 PARAMS ((char *, int, int)); | |
96 | ||
97 | static void | |
98 | mention PARAMS ((struct breakpoint *)); | |
99 | ||
100 | static struct breakpoint * | |
101 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); | |
102 | ||
103 | static void | |
104 | check_duplicates PARAMS ((CORE_ADDR)); | |
105 | ||
106 | static void | |
107 | describe_other_breakpoints PARAMS ((CORE_ADDR)); | |
108 | ||
30875e1c SG |
109 | static void |
110 | breakpoints_info PARAMS ((char *, int)); | |
111 | ||
112 | static void | |
423e9664 | 113 | breakpoint_1 PARAMS ((int, int)); |
30875e1c SG |
114 | |
115 | static bpstat | |
116 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); | |
117 | ||
118 | static int | |
119 | breakpoint_cond_eval PARAMS ((char *)); | |
120 | ||
121 | static void | |
122 | cleanup_executing_breakpoints PARAMS ((int)); | |
123 | ||
124 | static void | |
125 | commands_command PARAMS ((char *, int)); | |
126 | ||
127 | static void | |
128 | condition_command PARAMS ((char *, int)); | |
129 | ||
130 | static int | |
131 | get_number PARAMS ((char **)); | |
132 | ||
133 | static void | |
134 | set_breakpoint_count PARAMS ((int)); | |
135 | ||
999dd04b JL |
136 | static int |
137 | remove_breakpoint PARAMS ((struct breakpoint *)); | |
30875e1c | 138 | |
bd5635a1 | 139 | extern int addressprint; /* Print machine addresses? */ |
bd5635a1 | 140 | |
bd5635a1 RP |
141 | /* Are we executing breakpoint commands? */ |
142 | static int executing_breakpoint_commands; | |
143 | ||
cba0d141 JG |
144 | /* Walk the following statement or block through all breakpoints. |
145 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
146 | breakpoint. */ | |
147 | ||
bd5635a1 RP |
148 | #define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) |
149 | ||
cba0d141 JG |
150 | #define ALL_BREAKPOINTS_SAFE(b,tmp) \ |
151 | for (b = breakpoint_chain; \ | |
152 | b? (tmp=b->next, 1): 0; \ | |
153 | b = tmp) | |
154 | ||
e8bf33c4 JK |
155 | /* Provide defaults for systems that don't support hardware watchpoints. */ |
156 | ||
999dd04b | 157 | #ifndef TARGET_CAN_USE_HARDWARE_WATCHPOINT |
e8bf33c4 JK |
158 | |
159 | /* Returns non-zero if we can set a hardware watchpoint of type TYPE. TYPE is | |
160 | one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint, or | |
161 | bp_hardware_breakpoint. CNT is the number of such watchpoints used so far | |
162 | (including this one?). OTHERTYPE is who knows what... */ | |
163 | ||
11054881 | 164 | #define TARGET_CAN_USE_HARDWARE_WATCHPOINT(TYPE,CNT,OTHERTYPE) 0 |
e8bf33c4 JK |
165 | |
166 | /* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 1 | |
167 | for read and 2 for read/write accesses. Returns 0 for success, non-zero for | |
168 | failure. */ | |
169 | ||
11054881 KH |
170 | #define target_remove_watchpoint(ADDR,LEN,TYPE) -1 |
171 | #define target_insert_watchpoint(ADDR,LEN,TYPE) -1 | |
172 | #endif | |
173 | ||
174 | #ifndef target_insert_hw_breakpoint | |
175 | #define target_remove_hw_breakpoint(ADDR,SHADOW) -1 | |
176 | #define target_insert_hw_breakpoint(ADDR,SHADOW) -1 | |
177 | #endif | |
178 | ||
179 | #ifndef target_stopped_data_address | |
180 | #define target_stopped_data_address() 0 | |
999dd04b JL |
181 | #endif |
182 | ||
9f577285 SS |
183 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
184 | ||
185 | int show_breakpoint_hit_counts = 1; | |
186 | ||
bd5635a1 RP |
187 | /* Chain of all breakpoints defined. */ |
188 | ||
e8bf33c4 | 189 | struct breakpoint *breakpoint_chain; |
bd5635a1 RP |
190 | |
191 | /* Number of last breakpoint made. */ | |
192 | ||
193 | static int breakpoint_count; | |
194 | ||
195 | /* Set breakpoint count to NUM. */ | |
9f577285 | 196 | |
bd5635a1 RP |
197 | static void |
198 | set_breakpoint_count (num) | |
199 | int num; | |
200 | { | |
201 | breakpoint_count = num; | |
202 | set_internalvar (lookup_internalvar ("bpnum"), | |
06b6c733 | 203 | value_from_longest (builtin_type_int, (LONGEST) num)); |
bd5635a1 RP |
204 | } |
205 | ||
9f577285 SS |
206 | /* Used in run_command to zero the hit count when a new run starts. */ |
207 | ||
208 | void | |
209 | clear_breakpoint_hit_counts () | |
210 | { | |
211 | struct breakpoint *b; | |
212 | ||
213 | ALL_BREAKPOINTS (b) | |
214 | b->hit_count = 0; | |
215 | } | |
216 | ||
bd5635a1 RP |
217 | /* Default address, symtab and line to put a breakpoint at |
218 | for "break" command with no arg. | |
219 | if default_breakpoint_valid is zero, the other three are | |
220 | not valid, and "break" with no arg is an error. | |
221 | ||
222 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
223 | ||
224 | int default_breakpoint_valid; | |
225 | CORE_ADDR default_breakpoint_address; | |
226 | struct symtab *default_breakpoint_symtab; | |
227 | int default_breakpoint_line; | |
bd5635a1 RP |
228 | \f |
229 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
230 | Advance *PP after the string and any trailing whitespace. | |
231 | ||
232 | Currently the string can either be a number or "$" followed by the name | |
233 | of a convenience variable. Making it an expression wouldn't work well | |
234 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
235 | static int | |
236 | get_number (pp) | |
237 | char **pp; | |
238 | { | |
239 | int retval; | |
240 | char *p = *pp; | |
241 | ||
242 | if (p == NULL) | |
243 | /* Empty line means refer to the last breakpoint. */ | |
244 | return breakpoint_count; | |
245 | else if (*p == '$') | |
246 | { | |
247 | /* Make a copy of the name, so we can null-terminate it | |
248 | to pass to lookup_internalvar(). */ | |
249 | char *varname; | |
250 | char *start = ++p; | |
82a2edfb | 251 | value_ptr val; |
bd5635a1 RP |
252 | |
253 | while (isalnum (*p) || *p == '_') | |
254 | p++; | |
255 | varname = (char *) alloca (p - start + 1); | |
256 | strncpy (varname, start, p - start); | |
257 | varname[p - start] = '\0'; | |
258 | val = value_of_internalvar (lookup_internalvar (varname)); | |
259 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
260 | error ( | |
261 | "Convenience variables used to specify breakpoints must have integer values." | |
262 | ); | |
263 | retval = (int) value_as_long (val); | |
264 | } | |
265 | else | |
266 | { | |
80ba48f5 SG |
267 | if (*p == '-') |
268 | ++p; | |
bd5635a1 RP |
269 | while (*p >= '0' && *p <= '9') |
270 | ++p; | |
271 | if (p == *pp) | |
272 | /* There is no number here. (e.g. "cond a == b"). */ | |
273 | error_no_arg ("breakpoint number"); | |
274 | retval = atoi (*pp); | |
275 | } | |
276 | if (!(isspace (*p) || *p == '\0')) | |
277 | error ("breakpoint number expected"); | |
278 | while (isspace (*p)) | |
279 | p++; | |
280 | *pp = p; | |
281 | return retval; | |
282 | } | |
283 | \f | |
284 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
285 | ||
286 | static void | |
287 | condition_command (arg, from_tty) | |
288 | char *arg; | |
289 | int from_tty; | |
290 | { | |
291 | register struct breakpoint *b; | |
292 | char *p; | |
293 | register int bnum; | |
294 | ||
295 | if (arg == 0) | |
296 | error_no_arg ("breakpoint number"); | |
297 | ||
298 | p = arg; | |
299 | bnum = get_number (&p); | |
300 | ||
301 | ALL_BREAKPOINTS (b) | |
302 | if (b->number == bnum) | |
303 | { | |
304 | if (b->cond) | |
305 | { | |
c8950965 | 306 | free ((PTR)b->cond); |
bd5635a1 RP |
307 | b->cond = 0; |
308 | } | |
309 | if (b->cond_string != NULL) | |
c8950965 | 310 | free ((PTR)b->cond_string); |
bd5635a1 RP |
311 | |
312 | if (*p == 0) | |
313 | { | |
314 | b->cond = 0; | |
315 | b->cond_string = NULL; | |
316 | if (from_tty) | |
423e9664 | 317 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); |
bd5635a1 RP |
318 | } |
319 | else | |
320 | { | |
321 | arg = p; | |
322 | /* I don't know if it matters whether this is the string the user | |
323 | typed in or the decompiled expression. */ | |
324 | b->cond_string = savestring (arg, strlen (arg)); | |
d3b9c0df | 325 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); |
bd5635a1 RP |
326 | if (*arg) |
327 | error ("Junk at end of expression"); | |
328 | } | |
16726dd1 | 329 | breakpoints_changed (); |
bd5635a1 RP |
330 | return; |
331 | } | |
332 | ||
333 | error ("No breakpoint number %d.", bnum); | |
334 | } | |
335 | ||
bdbd5f50 | 336 | /* ARGSUSED */ |
bd5635a1 RP |
337 | static void |
338 | commands_command (arg, from_tty) | |
339 | char *arg; | |
340 | int from_tty; | |
341 | { | |
342 | register struct breakpoint *b; | |
343 | char *p; | |
344 | register int bnum; | |
345 | struct command_line *l; | |
346 | ||
347 | /* If we allowed this, we would have problems with when to | |
348 | free the storage, if we change the commands currently | |
349 | being read from. */ | |
350 | ||
351 | if (executing_breakpoint_commands) | |
352 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
353 | ||
354 | p = arg; | |
355 | bnum = get_number (&p); | |
356 | if (p && *p) | |
357 | error ("Unexpected extra arguments following breakpoint number."); | |
358 | ||
359 | ALL_BREAKPOINTS (b) | |
360 | if (b->number == bnum) | |
361 | { | |
bdbd5f50 | 362 | if (from_tty && input_from_terminal_p ()) |
9b280a7f | 363 | printf_filtered ("Type commands for when breakpoint %d is hit, one per line.\n\ |
bd5635a1 | 364 | End with a line saying just \"end\".\n", bnum); |
bd5635a1 RP |
365 | l = read_command_lines (); |
366 | free_command_lines (&b->commands); | |
367 | b->commands = l; | |
6c803036 | 368 | breakpoints_changed (); |
bd5635a1 RP |
369 | return; |
370 | } | |
371 | error ("No breakpoint number %d.", bnum); | |
372 | } | |
373 | \f | |
31ef19fc JK |
374 | extern int memory_breakpoint_size; /* from mem-break.c */ |
375 | ||
376 | /* Like target_read_memory() but if breakpoints are inserted, return | |
30875e1c SG |
377 | the shadow contents instead of the breakpoints themselves. |
378 | ||
379 | Read "memory data" from whatever target or inferior we have. | |
380 | Returns zero if successful, errno value if not. EIO is used | |
381 | for address out of bounds. If breakpoints are inserted, returns | |
382 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
383 | ||
31ef19fc JK |
384 | int |
385 | read_memory_nobpt (memaddr, myaddr, len) | |
386 | CORE_ADDR memaddr; | |
387 | char *myaddr; | |
388 | unsigned len; | |
389 | { | |
390 | int status; | |
391 | struct breakpoint *b; | |
392 | ||
393 | if (memory_breakpoint_size < 0) | |
5af4f5f6 JK |
394 | /* No breakpoints on this machine. FIXME: This should be |
395 | dependent on the debugging target. Probably want | |
396 | target_insert_breakpoint to return a size, saying how many | |
397 | bytes of the shadow contents are used, or perhaps have | |
398 | something like target_xfer_shadow. */ | |
31ef19fc JK |
399 | return target_read_memory (memaddr, myaddr, len); |
400 | ||
401 | ALL_BREAKPOINTS (b) | |
402 | { | |
999dd04b JL |
403 | if (b->type == bp_watchpoint |
404 | || b->type == bp_hardware_watchpoint | |
11054881 KH |
405 | || b->type == bp_read_watchpoint |
406 | || b->type == bp_access_watchpoint | |
999dd04b | 407 | || !b->inserted) |
31ef19fc JK |
408 | continue; |
409 | else if (b->address + memory_breakpoint_size <= memaddr) | |
410 | /* The breakpoint is entirely before the chunk of memory | |
411 | we are reading. */ | |
412 | continue; | |
413 | else if (b->address >= memaddr + len) | |
414 | /* The breakpoint is entirely after the chunk of memory we | |
415 | are reading. */ | |
416 | continue; | |
417 | else | |
418 | { | |
419 | /* Copy the breakpoint from the shadow contents, and recurse | |
420 | for the things before and after. */ | |
421 | ||
422 | /* Addresses and length of the part of the breakpoint that | |
423 | we need to copy. */ | |
424 | CORE_ADDR membpt = b->address; | |
425 | unsigned int bptlen = memory_breakpoint_size; | |
426 | /* Offset within shadow_contents. */ | |
427 | int bptoffset = 0; | |
428 | ||
429 | if (membpt < memaddr) | |
430 | { | |
431 | /* Only copy the second part of the breakpoint. */ | |
432 | bptlen -= memaddr - membpt; | |
433 | bptoffset = memaddr - membpt; | |
434 | membpt = memaddr; | |
435 | } | |
436 | ||
437 | if (membpt + bptlen > memaddr + len) | |
438 | { | |
439 | /* Only copy the first part of the breakpoint. */ | |
440 | bptlen -= (membpt + bptlen) - (memaddr + len); | |
441 | } | |
442 | ||
4ed3a9ea FF |
443 | memcpy (myaddr + membpt - memaddr, |
444 | b->shadow_contents + bptoffset, bptlen); | |
31ef19fc JK |
445 | |
446 | if (membpt > memaddr) | |
447 | { | |
448 | /* Copy the section of memory before the breakpoint. */ | |
449 | status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr); | |
450 | if (status != 0) | |
451 | return status; | |
452 | } | |
453 | ||
454 | if (membpt + bptlen < memaddr + len) | |
455 | { | |
456 | /* Copy the section of memory after the breakpoint. */ | |
457 | status = read_memory_nobpt | |
458 | (membpt + bptlen, | |
459 | myaddr + membpt + bptlen - memaddr, | |
460 | memaddr + len - (membpt + bptlen)); | |
461 | if (status != 0) | |
462 | return status; | |
463 | } | |
464 | return 0; | |
465 | } | |
466 | } | |
467 | /* Nothing overlaps. Just call read_memory_noerr. */ | |
468 | return target_read_memory (memaddr, myaddr, len); | |
469 | } | |
470 | \f | |
bd5635a1 RP |
471 | /* insert_breakpoints is used when starting or continuing the program. |
472 | remove_breakpoints is used when the program stops. | |
473 | Both return zero if successful, | |
474 | or an `errno' value if could not write the inferior. */ | |
475 | ||
476 | int | |
477 | insert_breakpoints () | |
478 | { | |
479 | register struct breakpoint *b; | |
480 | int val = 0; | |
481 | int disabled_breaks = 0; | |
482 | ||
483 | ALL_BREAKPOINTS (b) | |
30875e1c | 484 | if (b->type != bp_watchpoint |
999dd04b | 485 | && b->type != bp_hardware_watchpoint |
11054881 KH |
486 | && b->type != bp_read_watchpoint |
487 | && b->type != bp_access_watchpoint | |
bd5635a1 RP |
488 | && b->enable != disabled |
489 | && ! b->inserted | |
490 | && ! b->duplicate) | |
491 | { | |
11054881 KH |
492 | if (b->type == bp_hardware_breakpoint) |
493 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
494 | else | |
495 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
bd5635a1 RP |
496 | if (val) |
497 | { | |
498 | /* Can't set the breakpoint. */ | |
499 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
500 | if (DISABLE_UNSETTABLE_BREAK (b->address)) | |
501 | { | |
502 | val = 0; | |
503 | b->enable = disabled; | |
504 | if (!disabled_breaks) | |
505 | { | |
05052b63 | 506 | target_terminal_ours_for_output (); |
199b2450 | 507 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 508 | "Cannot insert breakpoint %d:\n", b->number); |
bd5635a1 RP |
509 | printf_filtered ("Disabling shared library breakpoints:\n"); |
510 | } | |
511 | disabled_breaks = 1; | |
512 | printf_filtered ("%d ", b->number); | |
513 | } | |
514 | else | |
515 | #endif | |
516 | { | |
05052b63 | 517 | target_terminal_ours_for_output (); |
199b2450 | 518 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
d3b9c0df | 519 | #ifdef ONE_PROCESS_WRITETEXT |
199b2450 | 520 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 521 | "The same program may be running in another process.\n"); |
d3b9c0df | 522 | #endif |
bd5635a1 RP |
523 | memory_error (val, b->address); /* which bombs us out */ |
524 | } | |
525 | } | |
526 | else | |
527 | b->inserted = 1; | |
528 | } | |
11054881 KH |
529 | else if ((b->type == bp_hardware_watchpoint || |
530 | b->type == bp_read_watchpoint || | |
531 | b->type == bp_access_watchpoint) | |
999dd04b JL |
532 | && b->enable == enabled |
533 | && ! b->inserted | |
534 | && ! b->duplicate) | |
535 | { | |
706dc3ce | 536 | struct frame_info *saved_frame; |
999dd04b JL |
537 | int saved_level, within_current_scope; |
538 | value_ptr mark = value_mark (); | |
539 | value_ptr v; | |
540 | ||
541 | /* Save the current frame and level so we can restore it after | |
542 | evaluating the watchpoint expression on its own frame. */ | |
543 | saved_frame = selected_frame; | |
544 | saved_level = selected_frame_level; | |
545 | ||
546 | /* Determine if the watchpoint is within scope. */ | |
547 | if (b->exp_valid_block == NULL) | |
548 | within_current_scope = 1; | |
549 | else | |
550 | { | |
706dc3ce JL |
551 | struct frame_info *fi = |
552 | find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
553 | within_current_scope = (fi != NULL); | |
999dd04b | 554 | if (within_current_scope) |
706dc3ce | 555 | select_frame (fi, -1); |
999dd04b JL |
556 | } |
557 | ||
558 | if (within_current_scope) | |
559 | { | |
560 | /* Evaluate the expression and cut the chain of values | |
561 | produced off from the value chain. */ | |
562 | v = evaluate_expression (b->exp); | |
563 | value_release_to_mark (mark); | |
564 | ||
565 | b->val_chain = v; | |
566 | b->inserted = 1; | |
567 | ||
568 | /* Look at each value on the value chain. */ | |
569 | for ( ; v; v=v->next) | |
570 | { | |
571 | /* If it's a memory location, then we must watch it. */ | |
572 | if (v->lval == lval_memory) | |
573 | { | |
11054881 | 574 | int addr, len, type; |
999dd04b JL |
575 | |
576 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
577 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 KH |
578 | type = 0; |
579 | if (b->type == bp_read_watchpoint) | |
580 | type = 1; | |
581 | else if (b->type == bp_access_watchpoint) | |
582 | type = 2; | |
583 | ||
584 | val = target_insert_watchpoint (addr, len, type); | |
999dd04b JL |
585 | if (val == -1) |
586 | { | |
587 | b->inserted = 0; | |
588 | break; | |
589 | } | |
590 | val = 0; | |
591 | } | |
592 | } | |
593 | /* Failure to insert a watchpoint on any memory value in the | |
594 | value chain brings us here. */ | |
595 | if (!b->inserted) | |
596 | warning ("Hardware watchpoint %d: Could not insert watchpoint\n", | |
597 | b->number); | |
598 | } | |
599 | else | |
600 | { | |
601 | printf_filtered ("\ | |
602 | Hardware watchpoint %d deleted because the program has left the block in\n\ | |
603 | which its expression is valid.\n", b->number); | |
604 | if (b->related_breakpoint) | |
605 | delete_breakpoint (b->related_breakpoint); | |
606 | delete_breakpoint (b); | |
607 | } | |
608 | ||
609 | /* Restore the frame and level. */ | |
610 | select_frame (saved_frame, saved_level); | |
611 | } | |
bd5635a1 RP |
612 | if (disabled_breaks) |
613 | printf_filtered ("\n"); | |
614 | return val; | |
615 | } | |
616 | ||
999dd04b | 617 | |
bd5635a1 RP |
618 | int |
619 | remove_breakpoints () | |
620 | { | |
621 | register struct breakpoint *b; | |
622 | int val; | |
623 | ||
bd5635a1 | 624 | ALL_BREAKPOINTS (b) |
999dd04b JL |
625 | { |
626 | if (b->inserted) | |
627 | { | |
628 | val = remove_breakpoint (b); | |
629 | if (val != 0) | |
630 | return val; | |
631 | } | |
632 | } | |
633 | return 0; | |
634 | } | |
bd5635a1 | 635 | |
999dd04b JL |
636 | |
637 | static int | |
638 | remove_breakpoint (b) | |
639 | struct breakpoint *b; | |
640 | { | |
641 | int val; | |
642 | ||
643 | if (b->type != bp_watchpoint | |
11054881 KH |
644 | && b->type != bp_hardware_watchpoint |
645 | && b->type != bp_read_watchpoint | |
646 | && b->type != bp_access_watchpoint) | |
999dd04b | 647 | { |
11054881 KH |
648 | if (b->type == bp_hardware_breakpoint) |
649 | val = target_remove_hw_breakpoint(b->address, b->shadow_contents); | |
650 | else | |
651 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
999dd04b JL |
652 | if (val) |
653 | return val; | |
654 | b->inserted = 0; | |
655 | } | |
11054881 KH |
656 | else if ((b->type == bp_hardware_watchpoint || |
657 | b->type == bp_read_watchpoint || | |
658 | b->type == bp_access_watchpoint) | |
999dd04b JL |
659 | && b->enable == enabled |
660 | && ! b->duplicate) | |
661 | { | |
662 | value_ptr v, n; | |
663 | ||
664 | b->inserted = 0; | |
665 | /* Walk down the saved value chain. */ | |
666 | for (v = b->val_chain; v; v = v->next) | |
667 | { | |
668 | /* For each memory reference remove the watchpoint | |
669 | at that address. */ | |
670 | if (v->lval == lval_memory) | |
671 | { | |
672 | int addr, len; | |
673 | ||
674 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
675 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 | 676 | val = target_remove_watchpoint (addr, len, b->type); |
999dd04b JL |
677 | if (val == -1) |
678 | b->inserted = 1; | |
679 | val = 0; | |
680 | } | |
681 | } | |
682 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
683 | if (b->inserted) | |
684 | error ("Hardware watchpoint %d: Could not remove watchpoint\n", | |
685 | b->number); | |
686 | ||
687 | /* Free the saved value chain. We will construct a new one | |
688 | the next time the watchpoint is inserted. */ | |
689 | for (v = b->val_chain; v; v = n) | |
690 | { | |
691 | n = v->next; | |
692 | value_free (v); | |
693 | } | |
694 | b->val_chain = NULL; | |
695 | } | |
bd5635a1 RP |
696 | return 0; |
697 | } | |
698 | ||
cf3e377e | 699 | /* Clear the "inserted" flag in all breakpoints. */ |
bd5635a1 RP |
700 | |
701 | void | |
702 | mark_breakpoints_out () | |
703 | { | |
704 | register struct breakpoint *b; | |
705 | ||
706 | ALL_BREAKPOINTS (b) | |
707 | b->inserted = 0; | |
708 | } | |
709 | ||
cf3e377e JK |
710 | /* Clear the "inserted" flag in all breakpoints and delete any breakpoints |
711 | which should go away between runs of the program. */ | |
712 | ||
713 | void | |
714 | breakpoint_init_inferior () | |
715 | { | |
716 | register struct breakpoint *b, *temp; | |
717 | ||
718 | ALL_BREAKPOINTS_SAFE (b, temp) | |
719 | { | |
720 | b->inserted = 0; | |
721 | ||
722 | /* If the call dummy breakpoint is at the entry point it will | |
723 | cause problems when the inferior is rerun, so we better | |
724 | get rid of it. */ | |
725 | if (b->type == bp_call_dummy) | |
726 | delete_breakpoint (b); | |
999dd04b JL |
727 | |
728 | /* Likewise for scope breakpoints. */ | |
729 | if (b->type == bp_watchpoint_scope) | |
730 | delete_breakpoint (b); | |
731 | ||
732 | /* Likewise for watchpoints on local expressions. */ | |
11054881 KH |
733 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint || |
734 | b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) | |
999dd04b JL |
735 | && b->exp_valid_block != NULL) |
736 | delete_breakpoint (b); | |
cf3e377e JK |
737 | } |
738 | } | |
739 | ||
bd5635a1 RP |
740 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. |
741 | When continuing from a location with a breakpoint, | |
742 | we actually single step once before calling insert_breakpoints. */ | |
743 | ||
744 | int | |
745 | breakpoint_here_p (pc) | |
746 | CORE_ADDR pc; | |
747 | { | |
748 | register struct breakpoint *b; | |
749 | ||
750 | ALL_BREAKPOINTS (b) | |
751 | if (b->enable != disabled && b->address == pc) | |
752 | return 1; | |
753 | ||
754 | return 0; | |
755 | } | |
199b2450 | 756 | |
05052b63 JK |
757 | /* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY |
758 | because figuring out the saved SP would take too much time, at least using | |
759 | get_saved_register on the 68k. This means that for this function to | |
760 | work right a port must use the bp_call_dummy breakpoint. */ | |
761 | ||
762 | int | |
763 | frame_in_dummy (frame) | |
706dc3ce | 764 | struct frame_info *frame; |
05052b63 JK |
765 | { |
766 | struct breakpoint *b; | |
767 | ||
d7e7e851 | 768 | #ifdef CALL_DUMMY |
05052b63 JK |
769 | ALL_BREAKPOINTS (b) |
770 | { | |
d7e7e851 JK |
771 | static unsigned LONGEST dummy[] = CALL_DUMMY; |
772 | ||
05052b63 | 773 | if (b->type == bp_call_dummy |
d7e7e851 JK |
774 | && b->frame == frame->frame |
775 | ||
776 | /* We need to check the PC as well as the frame on the sparc, | |
777 | for signals.exp in the testsuite. */ | |
778 | && (frame->pc | |
779 | >= (b->address | |
780 | - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE)) | |
781 | && frame->pc <= b->address) | |
05052b63 JK |
782 | return 1; |
783 | } | |
d7e7e851 | 784 | #endif /* CALL_DUMMY */ |
05052b63 JK |
785 | return 0; |
786 | } | |
787 | ||
199b2450 TL |
788 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC |
789 | is valid for process/thread PID. */ | |
790 | ||
791 | int | |
792 | breakpoint_thread_match (pc, pid) | |
793 | CORE_ADDR pc; | |
794 | int pid; | |
795 | { | |
796 | struct breakpoint *b; | |
797 | int thread; | |
798 | ||
799 | thread = pid_to_thread_id (pid); | |
800 | ||
801 | ALL_BREAKPOINTS (b) | |
802 | if (b->enable != disabled | |
803 | && b->address == pc | |
804 | && (b->thread == -1 || b->thread == thread)) | |
805 | return 1; | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
bd5635a1 RP |
810 | \f |
811 | /* bpstat stuff. External routines' interfaces are documented | |
812 | in breakpoint.h. */ | |
30875e1c SG |
813 | |
814 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
815 | Also free any storage that is part of a bpstat. */ | |
816 | ||
bd5635a1 RP |
817 | void |
818 | bpstat_clear (bsp) | |
819 | bpstat *bsp; | |
820 | { | |
821 | bpstat p; | |
822 | bpstat q; | |
823 | ||
824 | if (bsp == 0) | |
825 | return; | |
826 | p = *bsp; | |
827 | while (p != NULL) | |
828 | { | |
829 | q = p->next; | |
830 | if (p->old_val != NULL) | |
831 | value_free (p->old_val); | |
c8950965 | 832 | free ((PTR)p); |
bd5635a1 RP |
833 | p = q; |
834 | } | |
835 | *bsp = NULL; | |
836 | } | |
837 | ||
30875e1c SG |
838 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
839 | is part of the bpstat is copied as well. */ | |
840 | ||
bd5635a1 RP |
841 | bpstat |
842 | bpstat_copy (bs) | |
843 | bpstat bs; | |
844 | { | |
845 | bpstat p = NULL; | |
846 | bpstat tmp; | |
fee933f1 | 847 | bpstat retval = NULL; |
bd5635a1 RP |
848 | |
849 | if (bs == NULL) | |
850 | return bs; | |
851 | ||
852 | for (; bs != NULL; bs = bs->next) | |
853 | { | |
854 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4ed3a9ea | 855 | memcpy (tmp, bs, sizeof (*tmp)); |
bd5635a1 RP |
856 | if (p == NULL) |
857 | /* This is the first thing in the chain. */ | |
858 | retval = tmp; | |
859 | else | |
860 | p->next = tmp; | |
861 | p = tmp; | |
862 | } | |
863 | p->next = NULL; | |
864 | return retval; | |
865 | } | |
866 | ||
30875e1c SG |
867 | /* Find the bpstat associated with this breakpoint */ |
868 | ||
869 | bpstat | |
870 | bpstat_find_breakpoint(bsp, breakpoint) | |
871 | bpstat bsp; | |
872 | struct breakpoint *breakpoint; | |
873 | { | |
874 | if (bsp == NULL) return NULL; | |
875 | ||
876 | for (;bsp != NULL; bsp = bsp->next) { | |
877 | if (bsp->breakpoint_at == breakpoint) return bsp; | |
878 | } | |
879 | return NULL; | |
880 | } | |
881 | ||
882 | /* Return the breakpoint number of the first breakpoint we are stopped | |
883 | at. *BSP upon return is a bpstat which points to the remaining | |
884 | breakpoints stopped at (but which is not guaranteed to be good for | |
885 | anything but further calls to bpstat_num). | |
886 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
887 | ||
bd5635a1 RP |
888 | int |
889 | bpstat_num (bsp) | |
890 | bpstat *bsp; | |
891 | { | |
892 | struct breakpoint *b; | |
893 | ||
894 | if ((*bsp) == NULL) | |
895 | return 0; /* No more breakpoint values */ | |
896 | else | |
897 | { | |
898 | b = (*bsp)->breakpoint_at; | |
899 | *bsp = (*bsp)->next; | |
900 | if (b == NULL) | |
901 | return -1; /* breakpoint that's been deleted since */ | |
902 | else | |
903 | return b->number; /* We have its number */ | |
904 | } | |
905 | } | |
906 | ||
30875e1c SG |
907 | /* Modify BS so that the actions will not be performed. */ |
908 | ||
bd5635a1 RP |
909 | void |
910 | bpstat_clear_actions (bs) | |
911 | bpstat bs; | |
912 | { | |
913 | for (; bs != NULL; bs = bs->next) | |
914 | { | |
915 | bs->commands = NULL; | |
916 | if (bs->old_val != NULL) | |
917 | { | |
918 | value_free (bs->old_val); | |
919 | bs->old_val = NULL; | |
920 | } | |
921 | } | |
922 | } | |
923 | ||
bdbd5f50 JG |
924 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
925 | /* ARGSUSED */ | |
926 | static void | |
927 | cleanup_executing_breakpoints (ignore) | |
928 | int ignore; | |
929 | { | |
930 | executing_breakpoint_commands = 0; | |
931 | } | |
932 | ||
bd5635a1 RP |
933 | /* Execute all the commands associated with all the breakpoints at this |
934 | location. Any of these commands could cause the process to proceed | |
935 | beyond this point, etc. We look out for such changes by checking | |
936 | the global "breakpoint_proceeded" after each command. */ | |
30875e1c | 937 | |
bd5635a1 RP |
938 | void |
939 | bpstat_do_actions (bsp) | |
940 | bpstat *bsp; | |
941 | { | |
942 | bpstat bs; | |
bdbd5f50 | 943 | struct cleanup *old_chain; |
e8bf33c4 | 944 | struct command_line *cmd; |
bdbd5f50 JG |
945 | |
946 | executing_breakpoint_commands = 1; | |
947 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
bd5635a1 RP |
948 | |
949 | top: | |
950 | bs = *bsp; | |
951 | ||
bd5635a1 RP |
952 | breakpoint_proceeded = 0; |
953 | for (; bs != NULL; bs = bs->next) | |
954 | { | |
e8bf33c4 JK |
955 | cmd = bs->commands; |
956 | while (cmd != NULL) | |
bd5635a1 | 957 | { |
0f8cdd9b | 958 | execute_control_command (cmd); |
e8bf33c4 | 959 | cmd = cmd->next; |
bd5635a1 | 960 | } |
e8bf33c4 JK |
961 | if (breakpoint_proceeded) |
962 | /* The inferior is proceeded by the command; bomb out now. | |
963 | The bpstat chain has been blown away by wait_for_inferior. | |
964 | But since execution has stopped again, there is a new bpstat | |
965 | to look at, so start over. */ | |
966 | goto top; | |
967 | else | |
968 | bs->commands = NULL; | |
bd5635a1 | 969 | } |
bd5635a1 RP |
970 | |
971 | executing_breakpoint_commands = 0; | |
bdbd5f50 | 972 | discard_cleanups (old_chain); |
bd5635a1 RP |
973 | } |
974 | ||
8af68e4e JK |
975 | /* This is the normal print_it function for a bpstat. In the future, |
976 | much of this logic could (should?) be moved to bpstat_stop_status, | |
977 | by having it set different print_it functions. */ | |
30875e1c | 978 | |
8af68e4e JK |
979 | static int |
980 | print_it_normal (bs) | |
bd5635a1 RP |
981 | bpstat bs; |
982 | { | |
983 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
984 | which has since been deleted. */ | |
8af68e4e | 985 | if (bs->breakpoint_at == NULL |
30875e1c | 986 | || (bs->breakpoint_at->type != bp_breakpoint |
11054881 | 987 | && bs->breakpoint_at->type != bp_hardware_breakpoint |
999dd04b | 988 | && bs->breakpoint_at->type != bp_watchpoint |
11054881 KH |
989 | && bs->breakpoint_at->type != bp_read_watchpoint |
990 | && bs->breakpoint_at->type != bp_access_watchpoint | |
999dd04b | 991 | && bs->breakpoint_at->type != bp_hardware_watchpoint)) |
bd5635a1 | 992 | return 0; |
bd5635a1 | 993 | |
11054881 KH |
994 | if (bs->breakpoint_at->type == bp_breakpoint || |
995 | bs->breakpoint_at->type == bp_hardware_breakpoint) | |
bd5635a1 RP |
996 | { |
997 | /* I think the user probably only wants to see one breakpoint | |
998 | number, not all of them. */ | |
f2d9c058 | 999 | annotate_breakpoint (bs->breakpoint_at->number); |
bd5635a1 RP |
1000 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); |
1001 | return 0; | |
1002 | } | |
11054881 KH |
1003 | else if ((bs->old_val != NULL) && |
1004 | (bs->breakpoint_at->type == bp_watchpoint || | |
1005 | bs->breakpoint_at->type == bp_access_watchpoint || | |
1006 | bs->breakpoint_at->type == bp_hardware_watchpoint)) | |
bd5635a1 | 1007 | { |
f2d9c058 | 1008 | annotate_watchpoint (bs->breakpoint_at->number); |
11054881 | 1009 | mention (bs->breakpoint_at); |
bd5635a1 | 1010 | printf_filtered ("\nOld value = "); |
199b2450 | 1011 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); |
bd5635a1 | 1012 | printf_filtered ("\nNew value = "); |
199b2450 | 1013 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
bd5635a1 RP |
1014 | Val_pretty_default); |
1015 | printf_filtered ("\n"); | |
1016 | value_free (bs->old_val); | |
1017 | bs->old_val = NULL; | |
bd2f0c85 JL |
1018 | /* More than one watchpoint may have been triggered. */ |
1019 | return -1; | |
bd5635a1 | 1020 | } |
11054881 KH |
1021 | else if (bs->breakpoint_at->type == bp_access_watchpoint || |
1022 | bs->breakpoint_at->type == bp_read_watchpoint) | |
1023 | { | |
1024 | mention (bs->breakpoint_at); | |
1025 | printf_filtered ("\nValue = "); | |
1026 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
1027 | Val_pretty_default); | |
1028 | printf_filtered ("\n"); | |
1029 | return -1; | |
1030 | } | |
8af68e4e JK |
1031 | /* We can't deal with it. Maybe another member of the bpstat chain can. */ |
1032 | return -1; | |
1033 | } | |
1034 | ||
1035 | /* Print a message indicating what happened. Returns nonzero to | |
1036 | say that only the source line should be printed after this (zero | |
1037 | return means print the frame as well as the source line). */ | |
3f031adf | 1038 | /* Currently we always return zero. */ |
8af68e4e JK |
1039 | int |
1040 | bpstat_print (bs) | |
1041 | bpstat bs; | |
1042 | { | |
1043 | int val; | |
1044 | ||
1045 | if (bs == NULL) | |
1046 | return 0; | |
bd5635a1 | 1047 | |
8af68e4e JK |
1048 | val = (*bs->print_it) (bs); |
1049 | if (val >= 0) | |
1050 | return val; | |
1051 | ||
fcb887ff JK |
1052 | /* Maybe another breakpoint in the chain caused us to stop. |
1053 | (Currently all watchpoints go on the bpstat whether hit or | |
1054 | not. That probably could (should) be changed, provided care is taken | |
1055 | with respect to bpstat_explains_signal). */ | |
1056 | if (bs->next) | |
1057 | return bpstat_print (bs->next); | |
1058 | ||
cabd4da6 | 1059 | /* We reached the end of the chain without printing anything. */ |
bd5635a1 RP |
1060 | return 0; |
1061 | } | |
1062 | ||
1063 | /* Evaluate the expression EXP and return 1 if value is zero. | |
1064 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
bdbd5f50 | 1065 | The argument is a "struct expression *" that has been cast to char * to |
bd5635a1 RP |
1066 | make it pass through catch_errors. */ |
1067 | ||
1068 | static int | |
1069 | breakpoint_cond_eval (exp) | |
bdbd5f50 | 1070 | char *exp; |
bd5635a1 | 1071 | { |
11054881 KH |
1072 | value_ptr mark = value_mark (); |
1073 | int i = !value_true (evaluate_expression ((struct expression *)exp)); | |
1074 | value_free_to_mark (mark); | |
1075 | return i; | |
bd5635a1 RP |
1076 | } |
1077 | ||
1078 | /* Allocate a new bpstat and chain it to the current one. */ | |
1079 | ||
1080 | static bpstat | |
1081 | bpstat_alloc (b, cbs) | |
1082 | register struct breakpoint *b; | |
1083 | bpstat cbs; /* Current "bs" value */ | |
1084 | { | |
1085 | bpstat bs; | |
1086 | ||
1087 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
1088 | cbs->next = bs; | |
1089 | bs->breakpoint_at = b; | |
1090 | /* If the condition is false, etc., don't do the commands. */ | |
1091 | bs->commands = NULL; | |
bd5635a1 | 1092 | bs->old_val = NULL; |
8af68e4e | 1093 | bs->print_it = print_it_normal; |
bd5635a1 RP |
1094 | return bs; |
1095 | } | |
fa99ebe1 | 1096 | \f |
8af68e4e JK |
1097 | /* Possible return values for watchpoint_check (this can't be an enum |
1098 | because of check_errors). */ | |
999dd04b JL |
1099 | /* The watchpoint has been deleted. */ |
1100 | #define WP_DELETED 1 | |
8af68e4e JK |
1101 | /* The value has changed. */ |
1102 | #define WP_VALUE_CHANGED 2 | |
1103 | /* The value has not changed. */ | |
1104 | #define WP_VALUE_NOT_CHANGED 3 | |
1105 | ||
e8bf33c4 JK |
1106 | #define BP_TEMPFLAG 1 |
1107 | #define BP_HARDWAREFLAG 2 | |
1108 | ||
8af68e4e | 1109 | /* Check watchpoint condition. */ |
557f3a0e | 1110 | |
8af68e4e JK |
1111 | static int |
1112 | watchpoint_check (p) | |
fe675038 | 1113 | char *p; |
8af68e4e JK |
1114 | { |
1115 | bpstat bs = (bpstat) p; | |
11054881 | 1116 | struct breakpoint *b; |
706dc3ce | 1117 | struct frame_info *saved_frame, *fr; |
999dd04b JL |
1118 | int within_current_scope, saved_level; |
1119 | ||
557f3a0e SS |
1120 | b = bs->breakpoint_at; |
1121 | ||
1122 | if (b->exp_valid_block == NULL) | |
8af68e4e | 1123 | within_current_scope = 1; |
fa99ebe1 JK |
1124 | else |
1125 | { | |
706dc3ce JL |
1126 | /* There is no current frame at this moment. If we're going to have |
1127 | any chance of handling watchpoints on local variables, we'll need | |
1128 | the frame chain (so we can determine if we're in scope). */ | |
1129 | reinit_frame_cache(); | |
557f3a0e | 1130 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
999dd04b | 1131 | within_current_scope = (fr != NULL); |
fa99ebe1 JK |
1132 | if (within_current_scope) |
1133 | /* If we end up stopping, the current frame will get selected | |
1134 | in normal_stop. So this call to select_frame won't affect | |
1135 | the user. */ | |
1136 | select_frame (fr, -1); | |
1137 | } | |
1138 | ||
8af68e4e JK |
1139 | if (within_current_scope) |
1140 | { | |
1141 | /* We use value_{,free_to_}mark because it could be a | |
1142 | *long* time before we return to the command level and | |
cef4c2e7 PS |
1143 | call free_all_values. We can't call free_all_values because |
1144 | we might be in the middle of evaluating a function call. */ | |
8af68e4e | 1145 | |
82a2edfb JK |
1146 | value_ptr mark = value_mark (); |
1147 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
557f3a0e | 1148 | if (!value_equal (b->val, new_val)) |
8af68e4e JK |
1149 | { |
1150 | release_value (new_val); | |
1151 | value_free_to_mark (mark); | |
557f3a0e SS |
1152 | bs->old_val = b->val; |
1153 | b->val = new_val; | |
8af68e4e JK |
1154 | /* We will stop here */ |
1155 | return WP_VALUE_CHANGED; | |
1156 | } | |
1157 | else | |
1158 | { | |
1159 | /* Nothing changed, don't do anything. */ | |
1160 | value_free_to_mark (mark); | |
1161 | /* We won't stop here */ | |
1162 | return WP_VALUE_NOT_CHANGED; | |
1163 | } | |
1164 | } | |
1165 | else | |
1166 | { | |
1167 | /* This seems like the only logical thing to do because | |
1168 | if we temporarily ignored the watchpoint, then when | |
1169 | we reenter the block in which it is valid it contains | |
1170 | garbage (in the case of a function, it may have two | |
1171 | garbage values, one before and one after the prologue). | |
1172 | So we can't even detect the first assignment to it and | |
1173 | watch after that (since the garbage may or may not equal | |
1174 | the first value assigned). */ | |
8af68e4e | 1175 | printf_filtered ("\ |
999dd04b | 1176 | Watchpoint %d deleted because the program has left the block in\n\ |
8af68e4e | 1177 | which its expression is valid.\n", bs->breakpoint_at->number); |
557f3a0e SS |
1178 | if (b->related_breakpoint) |
1179 | delete_breakpoint (b->related_breakpoint); | |
1180 | delete_breakpoint (b); | |
999dd04b | 1181 | |
999dd04b | 1182 | return WP_DELETED; |
8af68e4e JK |
1183 | } |
1184 | } | |
1185 | ||
1186 | /* This is used when everything which needs to be printed has | |
1187 | already been printed. But we still want to print the frame. */ | |
1188 | static int | |
cabd4da6 | 1189 | print_it_done (bs) |
8af68e4e JK |
1190 | bpstat bs; |
1191 | { | |
1192 | return 0; | |
1193 | } | |
1194 | ||
cabd4da6 JK |
1195 | /* This is used when nothing should be printed for this bpstat entry. */ |
1196 | ||
1197 | static int | |
1198 | print_it_noop (bs) | |
1199 | bpstat bs; | |
1200 | { | |
1201 | return -1; | |
1202 | } | |
1203 | ||
cb6b0202 | 1204 | /* Get a bpstat associated with having just stopped at address *PC |
706dc3ce | 1205 | and frame address CORE_ADDRESS. Update *PC to point at the |
cb6b0202 JK |
1206 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero |
1207 | if this is known to not be a real breakpoint (it could still be a | |
1208 | watchpoint, though). */ | |
1209 | ||
bd5635a1 RP |
1210 | /* Determine whether we stopped at a breakpoint, etc, or whether we |
1211 | don't understand this stop. Result is a chain of bpstat's such that: | |
1212 | ||
1213 | if we don't understand the stop, the result is a null pointer. | |
1214 | ||
cb6b0202 | 1215 | if we understand why we stopped, the result is not null. |
bd5635a1 RP |
1216 | |
1217 | Each element of the chain refers to a particular breakpoint or | |
1218 | watchpoint at which we have stopped. (We may have stopped for | |
2d313932 | 1219 | several reasons concurrently.) |
bd5635a1 RP |
1220 | |
1221 | Each element of the chain has valid next, breakpoint_at, | |
1222 | commands, FIXME??? fields. | |
1223 | ||
1224 | */ | |
1225 | ||
bd5635a1 | 1226 | bpstat |
16726dd1 | 1227 | bpstat_stop_status (pc, not_a_breakpoint) |
bd5635a1 | 1228 | CORE_ADDR *pc; |
cb6b0202 | 1229 | int not_a_breakpoint; |
bd5635a1 RP |
1230 | { |
1231 | register struct breakpoint *b; | |
bd5635a1 | 1232 | CORE_ADDR bp_addr; |
bdbd5f50 | 1233 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1234 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
1235 | int real_breakpoint = 0; | |
bdbd5f50 | 1236 | #endif |
bd5635a1 | 1237 | /* Root of the chain of bpstat's */ |
e8bf33c4 | 1238 | struct bpstats root_bs[1]; |
bd5635a1 RP |
1239 | /* Pointer to the last thing in the chain currently. */ |
1240 | bpstat bs = root_bs; | |
11054881 KH |
1241 | static char message1[] = |
1242 | "Error evaluating expression for watchpoint %d\n"; | |
1243 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 RP |
1244 | |
1245 | /* Get the address where the breakpoint would have been. */ | |
1246 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
1247 | ||
1248 | ALL_BREAKPOINTS (b) | |
1249 | { | |
bd5635a1 RP |
1250 | if (b->enable == disabled) |
1251 | continue; | |
30875e1c | 1252 | |
999dd04b JL |
1253 | if (b->type != bp_watchpoint |
1254 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1255 | && b->type != bp_read_watchpoint |
1256 | && b->type != bp_access_watchpoint | |
1257 | && b->type != bp_hardware_breakpoint | |
999dd04b | 1258 | && b->address != bp_addr) |
bd5635a1 RP |
1259 | continue; |
1260 | ||
e8bf33c4 JK |
1261 | /* If defined, then we need to decr pc by this much after a hardware break- |
1262 | point. Presumably should override DECR_PC_AFTER_BREAK, though it doesn't | |
1263 | now... */ | |
1264 | ||
11054881 KH |
1265 | #ifndef DECR_PC_AFTER_HW_BREAK |
1266 | #define DECR_PC_AFTER_HW_BREAK 0 | |
1267 | #endif | |
e8bf33c4 | 1268 | |
11054881 KH |
1269 | if (b->type == bp_hardware_breakpoint |
1270 | && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK)) | |
1271 | continue; | |
1272 | ||
999dd04b JL |
1273 | if (b->type != bp_watchpoint |
1274 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1275 | && b->type != bp_read_watchpoint |
1276 | && b->type != bp_access_watchpoint | |
999dd04b | 1277 | && not_a_breakpoint) |
cb6b0202 JK |
1278 | continue; |
1279 | ||
30875e1c SG |
1280 | /* Come here if it's a watchpoint, or if the break address matches */ |
1281 | ||
9f577285 SS |
1282 | ++(b->hit_count); |
1283 | ||
bd5635a1 RP |
1284 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ |
1285 | ||
cabd4da6 JK |
1286 | bs->stop = 1; |
1287 | bs->print = 1; | |
bd5635a1 | 1288 | |
11054881 | 1289 | sprintf (message, message1, b->number); |
999dd04b | 1290 | if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) |
bd5635a1 | 1291 | { |
fe675038 JK |
1292 | switch (catch_errors (watchpoint_check, (char *) bs, message, |
1293 | RETURN_MASK_ALL)) | |
bd5635a1 | 1294 | { |
999dd04b | 1295 | case WP_DELETED: |
8af68e4e | 1296 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1297 | bs->print_it = print_it_done; |
8af68e4e JK |
1298 | /* Stop. */ |
1299 | break; | |
1300 | case WP_VALUE_CHANGED: | |
1301 | /* Stop. */ | |
1302 | break; | |
1303 | case WP_VALUE_NOT_CHANGED: | |
1304 | /* Don't stop. */ | |
cabd4da6 JK |
1305 | bs->print_it = print_it_noop; |
1306 | bs->stop = 0; | |
bd5635a1 | 1307 | continue; |
8af68e4e JK |
1308 | default: |
1309 | /* Can't happen. */ | |
1310 | /* FALLTHROUGH */ | |
1311 | case 0: | |
1312 | /* Error from catch_errors. */ | |
999dd04b JL |
1313 | printf_filtered ("Watchpoint %d deleted.\n", b->number); |
1314 | if (b->related_breakpoint) | |
1315 | delete_breakpoint (b->related_breakpoint); | |
1316 | delete_breakpoint (b); | |
8af68e4e | 1317 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1318 | bs->print_it = print_it_done; |
999dd04b | 1319 | |
8af68e4e JK |
1320 | /* Stop. */ |
1321 | break; | |
bd5635a1 RP |
1322 | } |
1323 | } | |
11054881 KH |
1324 | else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) |
1325 | { | |
1326 | CORE_ADDR addr; | |
1327 | value_ptr v; | |
1328 | int found = 0; | |
1329 | ||
1330 | addr = target_stopped_data_address(); | |
1331 | if (addr == 0) continue; | |
1332 | for (v = b->val_chain; v; v = v->next) | |
1333 | { | |
1334 | if (v->lval == lval_memory) | |
1335 | { | |
1336 | CORE_ADDR vaddr; | |
1337 | ||
1338 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1339 | if (addr == vaddr) | |
1340 | found = 1; | |
1341 | } | |
1342 | } | |
1343 | if (found) | |
1344 | switch (catch_errors (watchpoint_check, (char *) bs, message, | |
1345 | RETURN_MASK_ALL)) | |
1346 | { | |
1347 | case WP_DELETED: | |
1348 | /* We've already printed what needs to be printed. */ | |
1349 | bs->print_it = print_it_done; | |
1350 | /* Stop. */ | |
1351 | break; | |
1352 | case WP_VALUE_CHANGED: | |
1353 | case WP_VALUE_NOT_CHANGED: | |
1354 | /* Stop. */ | |
1355 | break; | |
1356 | default: | |
1357 | /* Can't happen. */ | |
1358 | case 0: | |
1359 | /* Error from catch_errors. */ | |
1360 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
1361 | if (b->related_breakpoint) | |
1362 | delete_breakpoint (b->related_breakpoint); | |
1363 | delete_breakpoint (b); | |
1364 | /* We've already printed what needs to be printed. */ | |
1365 | bs->print_it = print_it_done; | |
1366 | break; | |
1367 | } | |
1368 | } | |
bdbd5f50 | 1369 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1370 | else |
1371 | real_breakpoint = 1; | |
bdbd5f50 | 1372 | #endif |
bd5635a1 | 1373 | |
706dc3ce | 1374 | if (b->frame && b->frame != (get_current_frame ())->frame) |
cabd4da6 | 1375 | bs->stop = 0; |
bd5635a1 RP |
1376 | else |
1377 | { | |
fee933f1 | 1378 | int value_is_zero = 0; |
bd5635a1 RP |
1379 | |
1380 | if (b->cond) | |
1381 | { | |
1382 | /* Need to select the frame, with all that implies | |
1383 | so that the conditions will have the right context. */ | |
1384 | select_frame (get_current_frame (), 0); | |
bdbd5f50 JG |
1385 | value_is_zero |
1386 | = catch_errors (breakpoint_cond_eval, (char *)(b->cond), | |
fe675038 JK |
1387 | "Error in testing breakpoint condition:\n", |
1388 | RETURN_MASK_ALL); | |
06b6c733 | 1389 | /* FIXME-someday, should give breakpoint # */ |
bd5635a1 RP |
1390 | free_all_values (); |
1391 | } | |
bdbd5f50 | 1392 | if (b->cond && value_is_zero) |
bd5635a1 | 1393 | { |
cabd4da6 | 1394 | bs->stop = 0; |
bd5635a1 RP |
1395 | } |
1396 | else if (b->ignore_count > 0) | |
1397 | { | |
1398 | b->ignore_count--; | |
cabd4da6 | 1399 | bs->stop = 0; |
bd5635a1 RP |
1400 | } |
1401 | else | |
1402 | { | |
1403 | /* We will stop here */ | |
30875e1c | 1404 | if (b->disposition == disable) |
bd5635a1 RP |
1405 | b->enable = disabled; |
1406 | bs->commands = b->commands; | |
1407 | if (b->silent) | |
cabd4da6 | 1408 | bs->print = 0; |
2d313932 | 1409 | if (bs->commands && STREQ ("silent", bs->commands->line)) |
bd5635a1 RP |
1410 | { |
1411 | bs->commands = bs->commands->next; | |
cabd4da6 | 1412 | bs->print = 0; |
bd5635a1 RP |
1413 | } |
1414 | } | |
1415 | } | |
cabd4da6 JK |
1416 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
1417 | if (bs->stop == 0 || bs->print == 0) | |
1418 | bs->print_it = print_it_noop; | |
bd5635a1 RP |
1419 | } |
1420 | ||
1421 | bs->next = NULL; /* Terminate the chain */ | |
1422 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
cabd4da6 | 1423 | #if DECR_PC_AFTER_BREAK != 0 || defined (SHIFT_INST_REGS) |
bd5635a1 RP |
1424 | if (bs) |
1425 | { | |
bd5635a1 RP |
1426 | if (real_breakpoint) |
1427 | { | |
1428 | *pc = bp_addr; | |
1429 | #if defined (SHIFT_INST_REGS) | |
817ac7f8 | 1430 | SHIFT_INST_REGS(); |
bd5635a1 RP |
1431 | #else /* No SHIFT_INST_REGS. */ |
1432 | write_pc (bp_addr); | |
1433 | #endif /* No SHIFT_INST_REGS. */ | |
1434 | } | |
bd5635a1 | 1435 | } |
cabd4da6 | 1436 | #endif /* DECR_PC_AFTER_BREAK != 0. */ |
999dd04b JL |
1437 | |
1438 | /* The value of a hardware watchpoint hasn't changed, but the | |
1439 | intermediate memory locations we are watching may have. */ | |
11054881 KH |
1440 | if (bs && ! bs->stop && |
1441 | (bs->breakpoint_at->type == bp_hardware_watchpoint || | |
1442 | bs->breakpoint_at->type == bp_read_watchpoint || | |
1443 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
999dd04b JL |
1444 | { |
1445 | remove_breakpoints (); | |
1446 | insert_breakpoints (); | |
1447 | } | |
bd5635a1 RP |
1448 | return bs; |
1449 | } | |
cabd4da6 JK |
1450 | \f |
1451 | /* Tell what to do about this bpstat. */ | |
fe675038 | 1452 | struct bpstat_what |
cabd4da6 JK |
1453 | bpstat_what (bs) |
1454 | bpstat bs; | |
1455 | { | |
1456 | /* Classify each bpstat as one of the following. */ | |
1457 | enum class { | |
fe675038 JK |
1458 | /* This bpstat element has no effect on the main_action. */ |
1459 | no_effect = 0, | |
cabd4da6 JK |
1460 | |
1461 | /* There was a watchpoint, stop but don't print. */ | |
1462 | wp_silent, | |
1463 | ||
1464 | /* There was a watchpoint, stop and print. */ | |
1465 | wp_noisy, | |
1466 | ||
1467 | /* There was a breakpoint but we're not stopping. */ | |
1468 | bp_nostop, | |
1469 | ||
1470 | /* There was a breakpoint, stop but don't print. */ | |
1471 | bp_silent, | |
1472 | ||
1473 | /* There was a breakpoint, stop and print. */ | |
1474 | bp_noisy, | |
1475 | ||
1476 | /* We hit the longjmp breakpoint. */ | |
1477 | long_jump, | |
1478 | ||
1479 | /* We hit the longjmp_resume breakpoint. */ | |
1480 | long_resume, | |
1481 | ||
d7e7e851 JK |
1482 | /* We hit the step_resume breakpoint. */ |
1483 | step_resume, | |
1484 | ||
bcc37718 JK |
1485 | /* We hit the through_sigtramp breakpoint. */ |
1486 | through_sig, | |
1487 | ||
cabd4da6 JK |
1488 | /* This is just used to count how many enums there are. */ |
1489 | class_last | |
1490 | }; | |
1491 | ||
1492 | /* Here is the table which drives this routine. So that we can | |
1493 | format it pretty, we define some abbreviations for the | |
1494 | enum bpstat_what codes. */ | |
1495 | #define keep_c BPSTAT_WHAT_KEEP_CHECKING | |
1496 | #define stop_s BPSTAT_WHAT_STOP_SILENT | |
1497 | #define stop_n BPSTAT_WHAT_STOP_NOISY | |
1498 | #define single BPSTAT_WHAT_SINGLE | |
1499 | #define setlr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
1500 | #define clrlr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
1501 | #define clrlrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
d7e7e851 | 1502 | #define sr BPSTAT_WHAT_STEP_RESUME |
bcc37718 | 1503 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP |
d7e7e851 | 1504 | |
cabd4da6 JK |
1505 | /* "Can't happen." Might want to print an error message. |
1506 | abort() is not out of the question, but chances are GDB is just | |
1507 | a bit confused, not unusable. */ | |
1508 | #define err BPSTAT_WHAT_STOP_NOISY | |
1509 | ||
1510 | /* Given an old action and a class, come up with a new action. */ | |
84d59861 JK |
1511 | /* One interesting property of this table is that wp_silent is the same |
1512 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
1513 | after stopping, the check for whether to step over a breakpoint | |
1514 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
1515 | reference to how we stopped. We retain separate wp_silent and bp_silent | |
1516 | codes in case we want to change that someday. */ | |
d7e7e851 JK |
1517 | |
1518 | /* step_resume entries: a step resume breakpoint overrides another | |
1519 | breakpoint of signal handling (see comment in wait_for_inferior | |
1520 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
bcc37718 JK |
1521 | /* We handle the through_sigtramp_breakpoint the same way; having both |
1522 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
d7e7e851 | 1523 | |
fe675038 | 1524 | static const enum bpstat_what_main_action |
cabd4da6 JK |
1525 | table[(int)class_last][(int)BPSTAT_WHAT_LAST] = |
1526 | { | |
1527 | /* old action */ | |
bcc37718 JK |
1528 | /* keep_c stop_s stop_n single setlr clrlr clrlrs sr ts |
1529 | */ | |
1530 | /*no_effect*/ {keep_c,stop_s,stop_n,single, setlr , clrlr , clrlrs, sr, ts}, | |
1531 | /*wp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts}, | |
1532 | /*wp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts}, | |
1533 | /*bp_nostop*/ {single,stop_s,stop_n,single, setlr , clrlrs, clrlrs, sr, ts}, | |
1534 | /*bp_silent*/ {stop_s,stop_s,stop_n,stop_s, stop_s, stop_s, stop_s, sr, ts}, | |
1535 | /*bp_noisy*/ {stop_n,stop_n,stop_n,stop_n, stop_n, stop_n, stop_n, sr, ts}, | |
1536 | /*long_jump*/ {setlr ,stop_s,stop_n,setlr , err , err , err , sr, ts}, | |
1537 | /*long_resume*/ {clrlr ,stop_s,stop_n,clrlrs, err , err , err , sr, ts}, | |
1538 | /*step_resume*/ {sr ,sr ,sr ,sr , sr , sr , sr , sr, ts}, | |
1539 | /*through_sig*/ {ts ,ts ,ts ,ts , ts , ts , ts , ts, ts} | |
cabd4da6 JK |
1540 | }; |
1541 | #undef keep_c | |
1542 | #undef stop_s | |
1543 | #undef stop_n | |
1544 | #undef single | |
1545 | #undef setlr | |
1546 | #undef clrlr | |
1547 | #undef clrlrs | |
1548 | #undef err | |
bcc37718 JK |
1549 | #undef sr |
1550 | #undef ts | |
fe675038 | 1551 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
84d59861 | 1552 | struct bpstat_what retval; |
cabd4da6 | 1553 | |
cef4c2e7 | 1554 | retval.call_dummy = 0; |
cabd4da6 JK |
1555 | for (; bs != NULL; bs = bs->next) |
1556 | { | |
fee933f1 | 1557 | enum class bs_class = no_effect; |
cabd4da6 JK |
1558 | if (bs->breakpoint_at == NULL) |
1559 | /* I suspect this can happen if it was a momentary breakpoint | |
1560 | which has since been deleted. */ | |
1561 | continue; | |
1562 | switch (bs->breakpoint_at->type) | |
1563 | { | |
1564 | case bp_breakpoint: | |
11054881 | 1565 | case bp_hardware_breakpoint: |
cabd4da6 JK |
1566 | case bp_until: |
1567 | case bp_finish: | |
1568 | if (bs->stop) | |
1569 | { | |
1570 | if (bs->print) | |
1571 | bs_class = bp_noisy; | |
1572 | else | |
1573 | bs_class = bp_silent; | |
1574 | } | |
1575 | else | |
1576 | bs_class = bp_nostop; | |
1577 | break; | |
1578 | case bp_watchpoint: | |
999dd04b | 1579 | case bp_hardware_watchpoint: |
11054881 KH |
1580 | case bp_read_watchpoint: |
1581 | case bp_access_watchpoint: | |
cabd4da6 JK |
1582 | if (bs->stop) |
1583 | { | |
1584 | if (bs->print) | |
1585 | bs_class = wp_noisy; | |
1586 | else | |
1587 | bs_class = wp_silent; | |
1588 | } | |
1589 | else | |
fe675038 JK |
1590 | /* There was a watchpoint, but we're not stopping. This requires |
1591 | no further action. */ | |
1592 | bs_class = no_effect; | |
cabd4da6 JK |
1593 | break; |
1594 | case bp_longjmp: | |
1595 | bs_class = long_jump; | |
1596 | break; | |
1597 | case bp_longjmp_resume: | |
1598 | bs_class = long_resume; | |
1599 | break; | |
fe675038 | 1600 | case bp_step_resume: |
fe675038 JK |
1601 | if (bs->stop) |
1602 | { | |
d7e7e851 | 1603 | bs_class = step_resume; |
fe675038 JK |
1604 | } |
1605 | else | |
1606 | /* It is for the wrong frame. */ | |
1607 | bs_class = bp_nostop; | |
bcc37718 JK |
1608 | break; |
1609 | case bp_through_sigtramp: | |
1610 | bs_class = through_sig; | |
fe675038 | 1611 | break; |
999dd04b JL |
1612 | case bp_watchpoint_scope: |
1613 | bs_class = bp_nostop; | |
1614 | break; | |
1615 | ||
84d59861 JK |
1616 | case bp_call_dummy: |
1617 | /* Make sure the action is stop (silent or noisy), so infrun.c | |
1618 | pops the dummy frame. */ | |
1619 | bs_class = bp_silent; | |
1620 | retval.call_dummy = 1; | |
bb7b3800 | 1621 | break; |
cabd4da6 JK |
1622 | } |
1623 | current_action = table[(int)bs_class][(int)current_action]; | |
1624 | } | |
84d59861 JK |
1625 | retval.main_action = current_action; |
1626 | return retval; | |
cabd4da6 | 1627 | } |
bd5635a1 | 1628 | |
30875e1c SG |
1629 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
1630 | without hardware support). This isn't related to a specific bpstat, | |
1631 | just to things like whether watchpoints are set. */ | |
1632 | ||
bd5635a1 RP |
1633 | int |
1634 | bpstat_should_step () | |
1635 | { | |
1636 | struct breakpoint *b; | |
1637 | ALL_BREAKPOINTS (b) | |
30875e1c | 1638 | if (b->enable == enabled && b->type == bp_watchpoint) |
bd5635a1 RP |
1639 | return 1; |
1640 | return 0; | |
1641 | } | |
1642 | \f | |
1643 | /* Print information on breakpoint number BNUM, or -1 if all. | |
1644 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
1645 | is nonzero, process only watchpoints. */ | |
1646 | ||
1647 | static void | |
c8950965 | 1648 | breakpoint_1 (bnum, allflag) |
bd5635a1 | 1649 | int bnum; |
80ba48f5 | 1650 | int allflag; |
bd5635a1 RP |
1651 | { |
1652 | register struct breakpoint *b; | |
1653 | register struct command_line *l; | |
1654 | register struct symbol *sym; | |
1655 | CORE_ADDR last_addr = (CORE_ADDR)-1; | |
30875e1c | 1656 | int found_a_breakpoint = 0; |
11054881 KH |
1657 | static char *bptypes[] = {"breakpoint", "hw breakpoint", |
1658 | "until", "finish", "watchpoint", | |
1659 | "hw watchpoint", "read watchpoint", | |
1660 | "acc watchpoint", "longjmp", | |
999dd04b JL |
1661 | "longjmp resume", "step resume", |
1662 | "watchpoint scope", "call dummy" }; | |
80ba48f5 | 1663 | static char *bpdisps[] = {"del", "dis", "keep"}; |
30875e1c | 1664 | static char bpenables[] = "ny"; |
0a62ff36 | 1665 | char wrap_indent[80]; |
30875e1c | 1666 | |
bd5635a1 | 1667 | ALL_BREAKPOINTS (b) |
30875e1c SG |
1668 | if (bnum == -1 |
1669 | || bnum == b->number) | |
bd5635a1 | 1670 | { |
80ba48f5 SG |
1671 | /* We only print out user settable breakpoints unless the allflag is set. */ |
1672 | if (!allflag | |
1673 | && b->type != bp_breakpoint | |
11054881 | 1674 | && b->type != bp_hardware_breakpoint |
999dd04b | 1675 | && b->type != bp_watchpoint |
11054881 KH |
1676 | && b->type != bp_read_watchpoint |
1677 | && b->type != bp_access_watchpoint | |
999dd04b | 1678 | && b->type != bp_hardware_watchpoint) |
80ba48f5 SG |
1679 | continue; |
1680 | ||
30875e1c | 1681 | if (!found_a_breakpoint++) |
47ebe8fd | 1682 | { |
f2d9c058 KH |
1683 | annotate_breakpoints_headers (); |
1684 | ||
1685 | annotate_field (0); | |
1686 | printf_filtered ("Num "); | |
1687 | annotate_field (1); | |
1688 | printf_filtered ("Type "); | |
1689 | annotate_field (2); | |
1690 | printf_filtered ("Disp "); | |
1691 | annotate_field (3); | |
1692 | printf_filtered ("Enb "); | |
1693 | if (addressprint) | |
1694 | { | |
1695 | annotate_field (4); | |
1696 | printf_filtered ("Address "); | |
1697 | } | |
1698 | annotate_field (5); | |
1699 | printf_filtered ("What\n"); | |
1700 | ||
1701 | annotate_breakpoints_table (); | |
1702 | } | |
1703 | ||
1704 | annotate_record (); | |
1705 | annotate_field (0); | |
1706 | printf_filtered ("%-3d ", b->number); | |
1707 | annotate_field (1); | |
1708 | printf_filtered ("%-14s ", bptypes[(int)b->type]); | |
1709 | annotate_field (2); | |
1710 | printf_filtered ("%-4s ", bpdisps[(int)b->disposition]); | |
1711 | annotate_field (3); | |
47ebe8fd JK |
1712 | printf_filtered ("%-3c ", bpenables[(int)b->enable]); |
1713 | ||
0a62ff36 JK |
1714 | strcpy (wrap_indent, " "); |
1715 | if (addressprint) | |
1716 | strcat (wrap_indent, " "); | |
30875e1c | 1717 | switch (b->type) |
bd5635a1 | 1718 | { |
30875e1c | 1719 | case bp_watchpoint: |
999dd04b | 1720 | case bp_hardware_watchpoint: |
11054881 KH |
1721 | case bp_read_watchpoint: |
1722 | case bp_access_watchpoint: | |
47ebe8fd JK |
1723 | /* Field 4, the address, is omitted (which makes the columns |
1724 | not line up too nicely with the headers, but the effect | |
1725 | is relatively readable). */ | |
9f577285 | 1726 | annotate_field (5); |
199b2450 | 1727 | print_expression (b->exp, gdb_stdout); |
30875e1c | 1728 | break; |
84d59861 | 1729 | |
30875e1c | 1730 | case bp_breakpoint: |
11054881 | 1731 | case bp_hardware_breakpoint: |
80ba48f5 SG |
1732 | case bp_until: |
1733 | case bp_finish: | |
1734 | case bp_longjmp: | |
1735 | case bp_longjmp_resume: | |
84d59861 | 1736 | case bp_step_resume: |
bcc37718 | 1737 | case bp_through_sigtramp: |
999dd04b | 1738 | case bp_watchpoint_scope: |
bb7b3800 | 1739 | case bp_call_dummy: |
bd5635a1 | 1740 | if (addressprint) |
47ebe8fd | 1741 | { |
f2d9c058 | 1742 | annotate_field (4); |
47ebe8fd JK |
1743 | /* FIXME-32x64: need a print_address_numeric with |
1744 | field width */ | |
1745 | printf_filtered | |
1746 | ("%s ", | |
1747 | local_hex_string_custom | |
1748 | ((unsigned long) b->address, "08l")); | |
1749 | } | |
1750 | ||
f2d9c058 | 1751 | annotate_field (5); |
bd5635a1 RP |
1752 | |
1753 | last_addr = b->address; | |
d889f6b7 | 1754 | if (b->source_file) |
bd5635a1 RP |
1755 | { |
1756 | sym = find_pc_function (b->address); | |
1757 | if (sym) | |
1758 | { | |
199b2450 TL |
1759 | fputs_filtered ("in ", gdb_stdout); |
1760 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
0a62ff36 | 1761 | wrap_here (wrap_indent); |
199b2450 | 1762 | fputs_filtered (" at ", gdb_stdout); |
bd5635a1 | 1763 | } |
199b2450 | 1764 | fputs_filtered (b->source_file, gdb_stdout); |
bd5635a1 RP |
1765 | printf_filtered (":%d", b->line_number); |
1766 | } | |
1767 | else | |
199b2450 | 1768 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); |
fee933f1 | 1769 | break; |
bd5635a1 RP |
1770 | } |
1771 | ||
1772 | printf_filtered ("\n"); | |
1773 | ||
1774 | if (b->frame) | |
833e0d94 | 1775 | { |
f2d9c058 | 1776 | annotate_field (6); |
47ebe8fd | 1777 | |
833e0d94 | 1778 | printf_filtered ("\tstop only in stack frame at "); |
d24c0599 | 1779 | print_address_numeric (b->frame, 1, gdb_stdout); |
833e0d94 | 1780 | printf_filtered ("\n"); |
bcc37718 | 1781 | } |
47ebe8fd | 1782 | |
bd5635a1 RP |
1783 | if (b->cond) |
1784 | { | |
f2d9c058 | 1785 | annotate_field (7); |
47ebe8fd | 1786 | |
bd5635a1 | 1787 | printf_filtered ("\tstop only if "); |
199b2450 | 1788 | print_expression (b->cond, gdb_stdout); |
bd5635a1 RP |
1789 | printf_filtered ("\n"); |
1790 | } | |
47ebe8fd | 1791 | |
9f577285 SS |
1792 | if (show_breakpoint_hit_counts && b->hit_count) |
1793 | { | |
1794 | /* FIXME should make an annotation for this */ | |
1795 | ||
16726dd1 JK |
1796 | printf_filtered ("\tbreakpoint already hit %d time%s\n", |
1797 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
9f577285 SS |
1798 | } |
1799 | ||
bd5635a1 | 1800 | if (b->ignore_count) |
47ebe8fd | 1801 | { |
f2d9c058 | 1802 | annotate_field (8); |
47ebe8fd JK |
1803 | |
1804 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
1805 | } | |
1806 | ||
bd5635a1 | 1807 | if ((l = b->commands)) |
47ebe8fd | 1808 | { |
f2d9c058 | 1809 | annotate_field (9); |
47ebe8fd JK |
1810 | |
1811 | while (l) | |
1812 | { | |
0f8cdd9b | 1813 | print_command_line (l, 4); |
47ebe8fd JK |
1814 | l = l->next; |
1815 | } | |
1816 | } | |
bd5635a1 RP |
1817 | } |
1818 | ||
fee933f1 RP |
1819 | if (!found_a_breakpoint) |
1820 | { | |
1821 | if (bnum == -1) | |
1822 | printf_filtered ("No breakpoints or watchpoints.\n"); | |
1823 | else | |
1824 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); | |
1825 | } | |
30875e1c SG |
1826 | else |
1827 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
1828 | that a comparison of an unsigned with -1 is always false. */ | |
1829 | if (last_addr != (CORE_ADDR)-1) | |
1830 | set_next_address (last_addr); | |
47ebe8fd | 1831 | |
f2d9c058 | 1832 | annotate_breakpoints_table_end (); |
bd5635a1 RP |
1833 | } |
1834 | ||
bdbd5f50 | 1835 | /* ARGSUSED */ |
bd5635a1 RP |
1836 | static void |
1837 | breakpoints_info (bnum_exp, from_tty) | |
1838 | char *bnum_exp; | |
1839 | int from_tty; | |
1840 | { | |
1841 | int bnum = -1; | |
1842 | ||
1843 | if (bnum_exp) | |
1844 | bnum = parse_and_eval_address (bnum_exp); | |
1845 | ||
c8950965 | 1846 | breakpoint_1 (bnum, 0); |
80ba48f5 SG |
1847 | } |
1848 | ||
9b280a7f JG |
1849 | #if MAINTENANCE_CMDS |
1850 | ||
80ba48f5 SG |
1851 | /* ARGSUSED */ |
1852 | static void | |
9b280a7f | 1853 | maintenance_info_breakpoints (bnum_exp, from_tty) |
80ba48f5 SG |
1854 | char *bnum_exp; |
1855 | int from_tty; | |
1856 | { | |
1857 | int bnum = -1; | |
1858 | ||
1859 | if (bnum_exp) | |
1860 | bnum = parse_and_eval_address (bnum_exp); | |
1861 | ||
c8950965 | 1862 | breakpoint_1 (bnum, 1); |
bd5635a1 RP |
1863 | } |
1864 | ||
9b280a7f JG |
1865 | #endif |
1866 | ||
bd5635a1 RP |
1867 | /* Print a message describing any breakpoints set at PC. */ |
1868 | ||
1869 | static void | |
1870 | describe_other_breakpoints (pc) | |
1871 | register CORE_ADDR pc; | |
1872 | { | |
1873 | register int others = 0; | |
1874 | register struct breakpoint *b; | |
1875 | ||
1876 | ALL_BREAKPOINTS (b) | |
1877 | if (b->address == pc) | |
1878 | others++; | |
1879 | if (others > 0) | |
1880 | { | |
833e0d94 | 1881 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); |
bd5635a1 RP |
1882 | ALL_BREAKPOINTS (b) |
1883 | if (b->address == pc) | |
1884 | { | |
1885 | others--; | |
833e0d94 JK |
1886 | printf_filtered |
1887 | ("%d%s%s ", | |
1888 | b->number, | |
1889 | (b->enable == disabled) ? " (disabled)" : "", | |
1890 | (others > 1) ? "," : ((others == 1) ? " and" : "")); | |
bd5635a1 | 1891 | } |
833e0d94 | 1892 | printf_filtered ("also set at pc "); |
d24c0599 | 1893 | print_address_numeric (pc, 1, gdb_stdout); |
833e0d94 | 1894 | printf_filtered (".\n"); |
bd5635a1 RP |
1895 | } |
1896 | } | |
1897 | \f | |
1898 | /* Set the default place to put a breakpoint | |
1899 | for the `break' command with no arguments. */ | |
1900 | ||
1901 | void | |
1902 | set_default_breakpoint (valid, addr, symtab, line) | |
1903 | int valid; | |
1904 | CORE_ADDR addr; | |
1905 | struct symtab *symtab; | |
1906 | int line; | |
1907 | { | |
1908 | default_breakpoint_valid = valid; | |
1909 | default_breakpoint_address = addr; | |
1910 | default_breakpoint_symtab = symtab; | |
1911 | default_breakpoint_line = line; | |
1912 | } | |
1913 | ||
1914 | /* Rescan breakpoints at address ADDRESS, | |
1915 | marking the first one as "first" and any others as "duplicates". | |
1916 | This is so that the bpt instruction is only inserted once. */ | |
1917 | ||
1918 | static void | |
1919 | check_duplicates (address) | |
1920 | CORE_ADDR address; | |
1921 | { | |
1922 | register struct breakpoint *b; | |
1923 | register int count = 0; | |
1924 | ||
30875e1c | 1925 | if (address == 0) /* Watchpoints are uninteresting */ |
f266e564 JK |
1926 | return; |
1927 | ||
bd5635a1 RP |
1928 | ALL_BREAKPOINTS (b) |
1929 | if (b->enable != disabled && b->address == address) | |
1930 | { | |
1931 | count++; | |
1932 | b->duplicate = count > 1; | |
1933 | } | |
1934 | } | |
1935 | ||
1936 | /* Low level routine to set a breakpoint. | |
1937 | Takes as args the three things that every breakpoint must have. | |
1938 | Returns the breakpoint object so caller can set other things. | |
1939 | Does not set the breakpoint number! | |
f266e564 JK |
1940 | Does not print anything. |
1941 | ||
1942 | ==> This routine should not be called if there is a chance of later | |
1943 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
1944 | your arguments BEFORE calling this routine! */ | |
bd5635a1 RP |
1945 | |
1946 | static struct breakpoint * | |
1947 | set_raw_breakpoint (sal) | |
1948 | struct symtab_and_line sal; | |
1949 | { | |
1950 | register struct breakpoint *b, *b1; | |
1951 | ||
1952 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4ed3a9ea | 1953 | memset (b, 0, sizeof (*b)); |
bd5635a1 | 1954 | b->address = sal.pc; |
d889f6b7 JK |
1955 | if (sal.symtab == NULL) |
1956 | b->source_file = NULL; | |
1957 | else | |
1958 | b->source_file = savestring (sal.symtab->filename, | |
1959 | strlen (sal.symtab->filename)); | |
706dc3ce JL |
1960 | b->language = current_language->la_language; |
1961 | b->input_radix = input_radix; | |
199b2450 | 1962 | b->thread = -1; |
bd5635a1 RP |
1963 | b->line_number = sal.line; |
1964 | b->enable = enabled; | |
1965 | b->next = 0; | |
1966 | b->silent = 0; | |
1967 | b->ignore_count = 0; | |
1968 | b->commands = NULL; | |
30875e1c | 1969 | b->frame = 0; |
bd5635a1 RP |
1970 | |
1971 | /* Add this breakpoint to the end of the chain | |
1972 | so that a list of breakpoints will come out in order | |
1973 | of increasing numbers. */ | |
1974 | ||
1975 | b1 = breakpoint_chain; | |
1976 | if (b1 == 0) | |
1977 | breakpoint_chain = b; | |
1978 | else | |
1979 | { | |
1980 | while (b1->next) | |
1981 | b1 = b1->next; | |
1982 | b1->next = b; | |
1983 | } | |
1984 | ||
1985 | check_duplicates (sal.pc); | |
6c803036 | 1986 | breakpoints_changed (); |
bd5635a1 RP |
1987 | |
1988 | return b; | |
1989 | } | |
1990 | ||
30875e1c | 1991 | static void |
80ba48f5 | 1992 | create_longjmp_breakpoint(func_name) |
30875e1c | 1993 | char *func_name; |
30875e1c | 1994 | { |
30875e1c SG |
1995 | struct symtab_and_line sal; |
1996 | struct breakpoint *b; | |
80ba48f5 | 1997 | static int internal_breakpoint_number = -1; |
30875e1c | 1998 | |
30875e1c SG |
1999 | if (func_name != NULL) |
2000 | { | |
2001 | struct minimal_symbol *m; | |
2002 | ||
e8bf33c4 | 2003 | m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *)NULL); |
30875e1c | 2004 | if (m) |
2d313932 | 2005 | sal.pc = SYMBOL_VALUE_ADDRESS (m); |
30875e1c SG |
2006 | else |
2007 | return; | |
2008 | } | |
2009 | else | |
2010 | sal.pc = 0; | |
2011 | ||
2012 | sal.symtab = NULL; | |
2013 | sal.line = 0; | |
30875e1c | 2014 | |
80ba48f5 | 2015 | b = set_raw_breakpoint(sal); |
30875e1c SG |
2016 | if (!b) return; |
2017 | ||
80ba48f5 | 2018 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; |
30875e1c SG |
2019 | b->disposition = donttouch; |
2020 | b->enable = disabled; | |
2021 | b->silent = 1; | |
80ba48f5 SG |
2022 | if (func_name) |
2023 | b->addr_string = strsave(func_name); | |
2024 | b->number = internal_breakpoint_number--; | |
30875e1c | 2025 | } |
30875e1c SG |
2026 | |
2027 | /* Call this routine when stepping and nexting to enable a breakpoint if we do | |
2028 | a longjmp(). When we hit that breakpoint, call | |
2029 | set_longjmp_resume_breakpoint() to figure out where we are going. */ | |
2030 | ||
2031 | void | |
2032 | enable_longjmp_breakpoint() | |
2033 | { | |
80ba48f5 SG |
2034 | register struct breakpoint *b; |
2035 | ||
2036 | ALL_BREAKPOINTS (b) | |
2037 | if (b->type == bp_longjmp) | |
9b280a7f JG |
2038 | { |
2039 | b->enable = enabled; | |
2040 | check_duplicates (b->address); | |
2041 | } | |
30875e1c SG |
2042 | } |
2043 | ||
2044 | void | |
2045 | disable_longjmp_breakpoint() | |
2046 | { | |
80ba48f5 SG |
2047 | register struct breakpoint *b; |
2048 | ||
2049 | ALL_BREAKPOINTS (b) | |
9b280a7f | 2050 | if ( b->type == bp_longjmp |
80ba48f5 | 2051 | || b->type == bp_longjmp_resume) |
9b280a7f JG |
2052 | { |
2053 | b->enable = disabled; | |
2054 | check_duplicates (b->address); | |
2055 | } | |
30875e1c SG |
2056 | } |
2057 | ||
11054881 KH |
2058 | int |
2059 | hw_breakpoint_used_count() | |
2060 | { | |
2061 | register struct breakpoint *b; | |
2062 | int i = 0; | |
2063 | ||
2064 | ALL_BREAKPOINTS (b) | |
2065 | { | |
2066 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
2067 | i++; | |
2068 | } | |
2069 | ||
2070 | return i; | |
2071 | } | |
2072 | ||
2073 | int | |
2074 | hw_watchpoint_used_count(type, other_type_used) | |
2075 | enum bptype type; | |
2076 | int *other_type_used; | |
2077 | { | |
2078 | register struct breakpoint *b; | |
2079 | int i = 0; | |
2080 | ||
2081 | *other_type_used = 0; | |
2082 | ALL_BREAKPOINTS (b) | |
2083 | { | |
2084 | if (b->enable == enabled) | |
2085 | { | |
2086 | if (b->type == type) i++; | |
2087 | else if ((b->type == bp_hardware_watchpoint || | |
2088 | b->type == bp_read_watchpoint || | |
2089 | b->type == bp_access_watchpoint) | |
2090 | && b->enable == enabled) | |
2091 | *other_type_used = 1; | |
2092 | } | |
2093 | } | |
2094 | return i; | |
2095 | } | |
2096 | ||
30875e1c SG |
2097 | /* Call this after hitting the longjmp() breakpoint. Use this to set a new |
2098 | breakpoint at the target of the jmp_buf. | |
80ba48f5 SG |
2099 | |
2100 | FIXME - This ought to be done by setting a temporary breakpoint that gets | |
2101 | deleted automatically... | |
30875e1c SG |
2102 | */ |
2103 | ||
2104 | void | |
2105 | set_longjmp_resume_breakpoint(pc, frame) | |
2106 | CORE_ADDR pc; | |
706dc3ce | 2107 | struct frame_info *frame; |
30875e1c | 2108 | { |
80ba48f5 SG |
2109 | register struct breakpoint *b; |
2110 | ||
2111 | ALL_BREAKPOINTS (b) | |
2112 | if (b->type == bp_longjmp_resume) | |
2113 | { | |
2114 | b->address = pc; | |
2115 | b->enable = enabled; | |
2116 | if (frame != NULL) | |
706dc3ce | 2117 | b->frame = frame->frame; |
80ba48f5 SG |
2118 | else |
2119 | b->frame = 0; | |
9b280a7f | 2120 | check_duplicates (b->address); |
80ba48f5 SG |
2121 | return; |
2122 | } | |
30875e1c SG |
2123 | } |
2124 | ||
bd5635a1 RP |
2125 | /* Set a breakpoint that will evaporate an end of command |
2126 | at address specified by SAL. | |
2127 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
2128 | ||
30875e1c SG |
2129 | struct breakpoint * |
2130 | set_momentary_breakpoint (sal, frame, type) | |
bd5635a1 | 2131 | struct symtab_and_line sal; |
706dc3ce | 2132 | struct frame_info *frame; |
30875e1c | 2133 | enum bptype type; |
bd5635a1 RP |
2134 | { |
2135 | register struct breakpoint *b; | |
2136 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
2137 | b->type = type; |
2138 | b->enable = enabled; | |
2139 | b->disposition = donttouch; | |
706dc3ce | 2140 | b->frame = (frame ? frame->frame : 0); |
30875e1c | 2141 | return b; |
bd5635a1 RP |
2142 | } |
2143 | ||
30875e1c | 2144 | #if 0 |
bd5635a1 RP |
2145 | void |
2146 | clear_momentary_breakpoints () | |
2147 | { | |
2148 | register struct breakpoint *b; | |
2149 | ALL_BREAKPOINTS (b) | |
30875e1c | 2150 | if (b->disposition == delete) |
bd5635a1 RP |
2151 | { |
2152 | delete_breakpoint (b); | |
2153 | break; | |
2154 | } | |
2155 | } | |
30875e1c | 2156 | #endif |
bd5635a1 RP |
2157 | \f |
2158 | /* Tell the user we have just set a breakpoint B. */ | |
9f577285 | 2159 | |
bd5635a1 RP |
2160 | static void |
2161 | mention (b) | |
2162 | struct breakpoint *b; | |
2163 | { | |
9f577285 SS |
2164 | int say_where = 0; |
2165 | ||
d2a85f11 JMD |
2166 | /* FIXME: This is misplaced; mention() is called by things (like hitting a |
2167 | watchpoint) other than breakpoint creation. It should be possible to | |
2168 | clean this up and at the same time replace the random calls to | |
2169 | breakpoint_changed with this hook, as has already been done for | |
2170 | delete_breakpoint_hook and so on. */ | |
754e5da2 SG |
2171 | if (create_breakpoint_hook) |
2172 | create_breakpoint_hook (b); | |
2173 | ||
30875e1c | 2174 | switch (b->type) |
bd5635a1 | 2175 | { |
30875e1c | 2176 | case bp_watchpoint: |
bd5635a1 | 2177 | printf_filtered ("Watchpoint %d: ", b->number); |
199b2450 | 2178 | print_expression (b->exp, gdb_stdout); |
30875e1c | 2179 | break; |
999dd04b JL |
2180 | case bp_hardware_watchpoint: |
2181 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
2182 | print_expression (b->exp, gdb_stdout); | |
2183 | break; | |
11054881 KH |
2184 | case bp_read_watchpoint: |
2185 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
2186 | print_expression (b->exp, gdb_stdout); | |
2187 | break; | |
2188 | case bp_access_watchpoint: | |
2189 | printf_filtered ("Hardware access(read/write) watchpoint %d: ",b->number); | |
2190 | print_expression (b->exp, gdb_stdout); | |
2191 | break; | |
30875e1c | 2192 | case bp_breakpoint: |
9f577285 SS |
2193 | printf_filtered ("Breakpoint %d", b->number); |
2194 | say_where = 1; | |
51b57ded | 2195 | break; |
11054881 | 2196 | case bp_hardware_breakpoint: |
9f577285 SS |
2197 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
2198 | say_where = 1; | |
11054881 | 2199 | break; |
51b57ded FF |
2200 | case bp_until: |
2201 | case bp_finish: | |
2202 | case bp_longjmp: | |
2203 | case bp_longjmp_resume: | |
fee933f1 | 2204 | case bp_step_resume: |
bcc37718 | 2205 | case bp_through_sigtramp: |
199b2450 | 2206 | case bp_call_dummy: |
999dd04b | 2207 | case bp_watchpoint_scope: |
51b57ded | 2208 | break; |
bd5635a1 | 2209 | } |
9f577285 SS |
2210 | if (say_where) |
2211 | { | |
2212 | if (addressprint || b->source_file == NULL) | |
2213 | { | |
2214 | printf_filtered (" at "); | |
2215 | print_address_numeric (b->address, 1, gdb_stdout); | |
2216 | } | |
2217 | if (b->source_file) | |
2218 | printf_filtered (": file %s, line %d.", | |
2219 | b->source_file, b->line_number); | |
2220 | } | |
bd5635a1 RP |
2221 | printf_filtered ("\n"); |
2222 | } | |
2223 | ||
2224 | #if 0 | |
2225 | /* Nobody calls this currently. */ | |
2226 | /* Set a breakpoint from a symtab and line. | |
2227 | If TEMPFLAG is nonzero, it is a temporary breakpoint. | |
2228 | ADDR_STRING is a malloc'd string holding the name of where we are | |
2229 | setting the breakpoint. This is used later to re-set it after the | |
2230 | program is relinked and symbols are reloaded. | |
2231 | Print the same confirmation messages that the breakpoint command prints. */ | |
2232 | ||
2233 | void | |
2234 | set_breakpoint (s, line, tempflag, addr_string) | |
2235 | struct symtab *s; | |
2236 | int line; | |
2237 | int tempflag; | |
2238 | char *addr_string; | |
2239 | { | |
2240 | register struct breakpoint *b; | |
2241 | struct symtab_and_line sal; | |
2242 | ||
2243 | sal.symtab = s; | |
2244 | sal.line = line; | |
30875e1c SG |
2245 | sal.pc = 0; |
2246 | resolve_sal_pc (&sal); /* Might error out */ | |
2247 | describe_other_breakpoints (sal.pc); | |
bd5635a1 | 2248 | |
30875e1c SG |
2249 | b = set_raw_breakpoint (sal); |
2250 | set_breakpoint_count (breakpoint_count + 1); | |
2251 | b->number = breakpoint_count; | |
2252 | b->type = bp_breakpoint; | |
2253 | b->cond = 0; | |
2254 | b->addr_string = addr_string; | |
2255 | b->enable = enabled; | |
2256 | b->disposition = tempflag ? delete : donttouch; | |
bd5635a1 | 2257 | |
30875e1c | 2258 | mention (b); |
bd5635a1 | 2259 | } |
30875e1c | 2260 | #endif /* 0 */ |
bd5635a1 RP |
2261 | \f |
2262 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
11054881 KH |
2263 | flag: first bit : 0 non-temporary, 1 temporary. |
2264 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
bd5635a1 RP |
2265 | |
2266 | static void | |
11054881 | 2267 | break_command_1 (arg, flag, from_tty) |
bd5635a1 | 2268 | char *arg; |
11054881 | 2269 | int flag, from_tty; |
bd5635a1 | 2270 | { |
11054881 | 2271 | int tempflag, hardwareflag; |
bd5635a1 RP |
2272 | struct symtabs_and_lines sals; |
2273 | struct symtab_and_line sal; | |
2274 | register struct expression *cond = 0; | |
2275 | register struct breakpoint *b; | |
2276 | ||
2277 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
2278 | char *cond_start = NULL; | |
fee933f1 | 2279 | char *cond_end = NULL; |
bd5635a1 RP |
2280 | /* Pointers in arg to the start, and one past the end, |
2281 | of the address part. */ | |
2282 | char *addr_start = NULL; | |
fee933f1 | 2283 | char *addr_end = NULL; |
d889f6b7 | 2284 | struct cleanup *old_chain; |
fee933f1 | 2285 | struct cleanup *canonical_strings_chain = NULL; |
d889f6b7 | 2286 | char **canonical = (char **)NULL; |
bd5635a1 | 2287 | int i; |
199b2450 | 2288 | int thread; |
bd5635a1 | 2289 | |
e8bf33c4 JK |
2290 | hardwareflag = flag & BP_HARDWAREFLAG; |
2291 | tempflag = flag & BP_TEMPFLAG; | |
11054881 | 2292 | |
bd5635a1 RP |
2293 | sals.sals = NULL; |
2294 | sals.nelts = 0; | |
2295 | ||
2296 | sal.line = sal.pc = sal.end = 0; | |
2297 | sal.symtab = 0; | |
2298 | ||
2299 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
2300 | ||
2301 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2302 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2303 | { | |
2304 | if (default_breakpoint_valid) | |
2305 | { | |
2306 | sals.sals = (struct symtab_and_line *) | |
2307 | xmalloc (sizeof (struct symtab_and_line)); | |
2308 | sal.pc = default_breakpoint_address; | |
2309 | sal.line = default_breakpoint_line; | |
2310 | sal.symtab = default_breakpoint_symtab; | |
2311 | sals.sals[0] = sal; | |
2312 | sals.nelts = 1; | |
2313 | } | |
2314 | else | |
2315 | error ("No default breakpoint address now."); | |
2316 | } | |
2317 | else | |
2318 | { | |
2319 | addr_start = arg; | |
2320 | ||
2321 | /* Force almost all breakpoints to be in terms of the | |
2322 | current_source_symtab (which is decode_line_1's default). This | |
2323 | should produce the results we want almost all of the time while | |
2324 | leaving default_breakpoint_* alone. */ | |
2325 | if (default_breakpoint_valid | |
2326 | && (!current_source_symtab | |
2327 | || (arg && (*arg == '+' || *arg == '-')))) | |
2328 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2329 | default_breakpoint_line, &canonical); |
bd5635a1 | 2330 | else |
d889f6b7 | 2331 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical); |
bd5635a1 RP |
2332 | |
2333 | addr_end = arg; | |
2334 | } | |
2335 | ||
2336 | if (! sals.nelts) | |
2337 | return; | |
2338 | ||
d889f6b7 JK |
2339 | /* Make sure that all storage allocated in decode_line_1 gets freed in case |
2340 | the following `for' loop errors out. */ | |
2341 | old_chain = make_cleanup (free, sals.sals); | |
2342 | if (canonical != (char **)NULL) | |
2343 | { | |
2344 | make_cleanup (free, canonical); | |
2345 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
2346 | for (i = 0; i < sals.nelts; i++) | |
2347 | { | |
2348 | if (canonical[i] != NULL) | |
2349 | make_cleanup (free, canonical[i]); | |
2350 | } | |
2351 | } | |
2352 | ||
199b2450 TL |
2353 | thread = -1; /* No specific thread yet */ |
2354 | ||
30875e1c SG |
2355 | /* Resolve all line numbers to PC's, and verify that conditions |
2356 | can be parsed, before setting any breakpoints. */ | |
bd5635a1 RP |
2357 | for (i = 0; i < sals.nelts; i++) |
2358 | { | |
199b2450 TL |
2359 | char *tok, *end_tok; |
2360 | int toklen; | |
2361 | ||
30875e1c | 2362 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 | 2363 | |
199b2450 TL |
2364 | tok = arg; |
2365 | ||
2366 | while (tok && *tok) | |
bd5635a1 | 2367 | { |
199b2450 TL |
2368 | while (*tok == ' ' || *tok == '\t') |
2369 | tok++; | |
2370 | ||
2371 | end_tok = tok; | |
2372 | ||
2373 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2374 | end_tok++; | |
2375 | ||
2376 | toklen = end_tok - tok; | |
2377 | ||
2378 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2379 | { | |
2380 | tok = cond_start = end_tok + 1; | |
2381 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
2382 | cond_end = tok; | |
2383 | } | |
2384 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
bd5635a1 | 2385 | { |
199b2450 TL |
2386 | char *tmptok; |
2387 | ||
2388 | tok = end_tok + 1; | |
2389 | tmptok = tok; | |
2390 | thread = strtol (tok, &tok, 0); | |
2391 | if (tok == tmptok) | |
2392 | error ("Junk after thread keyword."); | |
2393 | if (!valid_thread_id (thread)) | |
2394 | error ("Unknown thread %d\n", thread); | |
bd5635a1 RP |
2395 | } |
2396 | else | |
2397 | error ("Junk at end of arguments."); | |
2398 | } | |
bd5635a1 | 2399 | } |
11054881 KH |
2400 | if (hardwareflag) |
2401 | { | |
557f3a0e SS |
2402 | int i, target_resources_ok; |
2403 | ||
2404 | i = hw_breakpoint_used_count (); | |
2405 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
2406 | bp_hardware_breakpoint, i + sals.nelts, 0); | |
11054881 KH |
2407 | if (target_resources_ok == 0) |
2408 | error ("No hardware breakpoint support in the target."); | |
2409 | else if (target_resources_ok < 0) | |
2410 | error ("Hardware breakpoints used exceeds limit."); | |
2411 | } | |
bd5635a1 | 2412 | |
d889f6b7 JK |
2413 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
2414 | if (canonical != (char **)NULL) | |
2415 | discard_cleanups (canonical_strings_chain); | |
2416 | ||
30875e1c | 2417 | /* Now set all the breakpoints. */ |
bd5635a1 RP |
2418 | for (i = 0; i < sals.nelts; i++) |
2419 | { | |
2420 | sal = sals.sals[i]; | |
2421 | ||
2422 | if (from_tty) | |
2423 | describe_other_breakpoints (sal.pc); | |
2424 | ||
2425 | b = set_raw_breakpoint (sal); | |
2426 | set_breakpoint_count (breakpoint_count + 1); | |
2427 | b->number = breakpoint_count; | |
11054881 | 2428 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; |
bd5635a1 | 2429 | b->cond = cond; |
199b2450 | 2430 | b->thread = thread; |
0a97f6c4 | 2431 | |
d889f6b7 JK |
2432 | /* If a canonical line spec is needed use that instead of the |
2433 | command string. */ | |
2434 | if (canonical != (char **)NULL && canonical[i] != NULL) | |
2435 | b->addr_string = canonical[i]; | |
2436 | else if (addr_start) | |
bd5635a1 RP |
2437 | b->addr_string = savestring (addr_start, addr_end - addr_start); |
2438 | if (cond_start) | |
2439 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2440 | ||
30875e1c | 2441 | b->enable = enabled; |
e8bf33c4 | 2442 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 RP |
2443 | |
2444 | mention (b); | |
2445 | } | |
2446 | ||
2447 | if (sals.nelts > 1) | |
2448 | { | |
833e0d94 JK |
2449 | printf_filtered ("Multiple breakpoints were set.\n"); |
2450 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 2451 | } |
d889f6b7 | 2452 | do_cleanups (old_chain); |
bd5635a1 RP |
2453 | } |
2454 | ||
30875e1c SG |
2455 | /* Helper function for break_command_1 and disassemble_command. */ |
2456 | ||
2457 | void | |
2458 | resolve_sal_pc (sal) | |
2459 | struct symtab_and_line *sal; | |
2460 | { | |
2461 | CORE_ADDR pc; | |
2462 | ||
2463 | if (sal->pc == 0 && sal->symtab != 0) | |
2464 | { | |
2465 | pc = find_line_pc (sal->symtab, sal->line); | |
2466 | if (pc == 0) | |
2467 | error ("No line %d in file \"%s\".", | |
2468 | sal->line, sal->symtab->filename); | |
2469 | sal->pc = pc; | |
2470 | } | |
2471 | } | |
2472 | ||
bd5635a1 RP |
2473 | void |
2474 | break_command (arg, from_tty) | |
2475 | char *arg; | |
2476 | int from_tty; | |
2477 | { | |
2478 | break_command_1 (arg, 0, from_tty); | |
2479 | } | |
2480 | ||
2481 | static void | |
2482 | tbreak_command (arg, from_tty) | |
2483 | char *arg; | |
2484 | int from_tty; | |
2485 | { | |
11054881 KH |
2486 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
2487 | } | |
2488 | ||
2489 | static void | |
2490 | hbreak_command (arg, from_tty) | |
2491 | char *arg; | |
2492 | int from_tty; | |
2493 | { | |
2494 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
2495 | } | |
2496 | ||
2497 | static void | |
2498 | thbreak_command (arg, from_tty) | |
2499 | char *arg; | |
2500 | int from_tty; | |
2501 | { | |
2502 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
bd5635a1 RP |
2503 | } |
2504 | ||
bdbd5f50 | 2505 | /* ARGSUSED */ |
11054881 KH |
2506 | /* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) |
2507 | */ | |
bd5635a1 | 2508 | static void |
11054881 | 2509 | watch_command_1 (arg, accessflag, from_tty) |
bd5635a1 | 2510 | char *arg; |
11054881 | 2511 | int accessflag; |
bd5635a1 RP |
2512 | int from_tty; |
2513 | { | |
2514 | struct breakpoint *b; | |
2515 | struct symtab_and_line sal; | |
f266e564 JK |
2516 | struct expression *exp; |
2517 | struct block *exp_valid_block; | |
11054881 | 2518 | struct value *val, *mark; |
706dc3ce | 2519 | struct frame_info *frame, *prev_frame; |
11054881 KH |
2520 | char *exp_start = NULL; |
2521 | char *exp_end = NULL; | |
2522 | char *tok, *end_tok; | |
2523 | int toklen; | |
2524 | char *cond_start = NULL; | |
2525 | char *cond_end = NULL; | |
2526 | struct expression *cond = NULL; | |
2527 | int i, other_type_used, target_resources_ok; | |
2528 | enum bptype bp_type; | |
2529 | int mem_cnt = 0; | |
bd5635a1 | 2530 | |
30875e1c | 2531 | sal.pc = 0; |
bd5635a1 RP |
2532 | sal.symtab = NULL; |
2533 | sal.line = 0; | |
2534 | ||
f266e564 JK |
2535 | /* Parse arguments. */ |
2536 | innermost_block = NULL; | |
11054881 KH |
2537 | exp_start = arg; |
2538 | exp = parse_exp_1 (&arg, 0, 0); | |
2539 | exp_end = arg; | |
f266e564 | 2540 | exp_valid_block = innermost_block; |
11054881 | 2541 | mark = value_mark (); |
f266e564 JK |
2542 | val = evaluate_expression (exp); |
2543 | release_value (val); | |
2d313932 JK |
2544 | if (VALUE_LAZY (val)) |
2545 | value_fetch_lazy (val); | |
f266e564 | 2546 | |
11054881 KH |
2547 | tok = arg; |
2548 | while (*tok == ' ' || *tok == '\t') | |
2549 | tok++; | |
2550 | end_tok = tok; | |
2551 | ||
2552 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2553 | end_tok++; | |
2554 | ||
2555 | toklen = end_tok - tok; | |
2556 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2557 | { | |
2558 | tok = cond_start = end_tok + 1; | |
2559 | cond = parse_exp_1 (&tok, 0, 0); | |
2560 | cond_end = tok; | |
2561 | } | |
2562 | if (*tok) | |
2563 | error("Junk at end of command."); | |
2564 | ||
2565 | if (accessflag == 1) bp_type = bp_read_watchpoint; | |
2566 | else if (accessflag == 2) bp_type = bp_access_watchpoint; | |
2567 | else bp_type = bp_hardware_watchpoint; | |
2568 | ||
2569 | mem_cnt = can_use_hardware_watchpoint (val); | |
2570 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
2571 | error ("Expression cannot be implemented with read/access watchpoint."); | |
2572 | if (mem_cnt != 0) { | |
2573 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
2574 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
2575 | bp_type, i + mem_cnt, other_type_used); | |
2576 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) | |
2577 | error ("Target does not have this type of hardware watchpoint support."); | |
2578 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) | |
2579 | error ("Target resources have been allocated for other types of watchpoints."); | |
2580 | } | |
2581 | ||
f266e564 | 2582 | /* Now set up the breakpoint. */ |
bd5635a1 RP |
2583 | b = set_raw_breakpoint (sal); |
2584 | set_breakpoint_count (breakpoint_count + 1); | |
2585 | b->number = breakpoint_count; | |
30875e1c | 2586 | b->disposition = donttouch; |
f266e564 JK |
2587 | b->exp = exp; |
2588 | b->exp_valid_block = exp_valid_block; | |
11054881 | 2589 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
f266e564 | 2590 | b->val = val; |
11054881 KH |
2591 | b->cond = cond; |
2592 | if (cond_start) | |
2593 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2594 | else | |
2595 | b->cond_string = 0; | |
2596 | ||
999dd04b JL |
2597 | frame = block_innermost_frame (exp_valid_block); |
2598 | if (frame) | |
2599 | { | |
2600 | prev_frame = get_prev_frame (frame); | |
706dc3ce | 2601 | b->watchpoint_frame = frame->frame; |
999dd04b JL |
2602 | } |
2603 | else | |
9e8db445 | 2604 | b->watchpoint_frame = (CORE_ADDR)0; |
999dd04b | 2605 | |
11054881 KH |
2606 | if (mem_cnt && target_resources_ok > 0) |
2607 | b->type = bp_type; | |
999dd04b JL |
2608 | else |
2609 | b->type = bp_watchpoint; | |
2610 | ||
2611 | /* If the expression is "local", then set up a "watchpoint scope" | |
2612 | breakpoint at the point where we've left the scope of the watchpoint | |
2613 | expression. */ | |
2614 | if (innermost_block) | |
2615 | { | |
2616 | struct breakpoint *scope_breakpoint; | |
2617 | struct symtab_and_line scope_sal; | |
2618 | ||
2619 | if (prev_frame) | |
2620 | { | |
2621 | scope_sal.pc = get_frame_pc (prev_frame); | |
2622 | scope_sal.symtab = NULL; | |
2623 | scope_sal.line = 0; | |
2624 | ||
2625 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
2626 | set_breakpoint_count (breakpoint_count + 1); | |
2627 | scope_breakpoint->number = breakpoint_count; | |
2628 | ||
2629 | scope_breakpoint->type = bp_watchpoint_scope; | |
2630 | scope_breakpoint->enable = enabled; | |
2631 | ||
2632 | /* Automatically delete the breakpoint when it hits. */ | |
e8bf33c4 | 2633 | scope_breakpoint->disposition = del; |
999dd04b JL |
2634 | |
2635 | /* Only break in the proper frame (help with recursion). */ | |
2636 | scope_breakpoint->frame = prev_frame->frame; | |
2637 | ||
2638 | /* Set the address at which we will stop. */ | |
2639 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
2640 | ||
2641 | /* The scope breakpoint is related to the watchpoint. We | |
2642 | will need to act on them together. */ | |
2643 | b->related_breakpoint = scope_breakpoint; | |
2644 | } | |
2645 | } | |
11054881 | 2646 | value_free_to_mark (mark); |
bd5635a1 RP |
2647 | mention (b); |
2648 | } | |
999dd04b | 2649 | |
11054881 KH |
2650 | /* Return count of locations need to be watched and can be handled |
2651 | in hardware. If the watchpoint can not be handled | |
999dd04b JL |
2652 | in hardware return zero. */ |
2653 | ||
2654 | static int | |
11054881 KH |
2655 | can_use_hardware_watchpoint (v) |
2656 | struct value *v; | |
999dd04b | 2657 | { |
11054881 | 2658 | int found_memory_cnt = 0; |
999dd04b JL |
2659 | |
2660 | /* Make sure all the intermediate values are in memory. Also make sure | |
2661 | we found at least one memory expression. Guards against watch 0x12345, | |
2662 | which is meaningless, but could cause errors if one tries to insert a | |
2663 | hardware watchpoint for the constant expression. */ | |
11054881 | 2664 | for ( ; v; v = v->next) |
999dd04b | 2665 | { |
11054881 KH |
2666 | if (v->lval == lval_memory) |
2667 | { | |
2668 | if (TYPE_LENGTH (VALUE_TYPE (v)) <= REGISTER_SIZE) | |
2669 | found_memory_cnt++; | |
2670 | } | |
2671 | else if (v->lval != not_lval && v->modifiable == 0) | |
999dd04b | 2672 | return 0; |
999dd04b JL |
2673 | } |
2674 | ||
2675 | /* The expression itself looks suitable for using a hardware | |
2676 | watchpoint, but give the target machine a chance to reject it. */ | |
11054881 KH |
2677 | return found_memory_cnt; |
2678 | } | |
2679 | ||
2680 | static void watch_command (arg, from_tty) | |
2681 | char *arg; | |
2682 | int from_tty; | |
2683 | { | |
2684 | watch_command_1 (arg, 0, from_tty); | |
2685 | } | |
2686 | ||
2687 | static void rwatch_command (arg, from_tty) | |
2688 | char *arg; | |
2689 | int from_tty; | |
2690 | { | |
2691 | watch_command_1 (arg, 1, from_tty); | |
2692 | } | |
2693 | ||
2694 | static void awatch_command (arg, from_tty) | |
2695 | char *arg; | |
2696 | int from_tty; | |
2697 | { | |
2698 | watch_command_1 (arg, 2, from_tty); | |
999dd04b JL |
2699 | } |
2700 | ||
bd5635a1 | 2701 | \f |
706dc3ce JL |
2702 | /* Helper routine for the until_command routine in infcmd.c. Here |
2703 | because it uses the mechanisms of breakpoints. */ | |
2704 | ||
bdbd5f50 | 2705 | /* ARGSUSED */ |
bd5635a1 RP |
2706 | void |
2707 | until_break_command (arg, from_tty) | |
2708 | char *arg; | |
2709 | int from_tty; | |
2710 | { | |
2711 | struct symtabs_and_lines sals; | |
2712 | struct symtab_and_line sal; | |
706dc3ce | 2713 | struct frame_info *prev_frame = get_prev_frame (selected_frame); |
30875e1c SG |
2714 | struct breakpoint *breakpoint; |
2715 | struct cleanup *old_chain; | |
bd5635a1 RP |
2716 | |
2717 | clear_proceed_status (); | |
2718 | ||
2719 | /* Set a breakpoint where the user wants it and at return from | |
2720 | this function */ | |
2721 | ||
2722 | if (default_breakpoint_valid) | |
2723 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2724 | default_breakpoint_line, (char ***)NULL); |
bd5635a1 | 2725 | else |
d889f6b7 | 2726 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
2727 | |
2728 | if (sals.nelts != 1) | |
2729 | error ("Couldn't get information on specified line."); | |
2730 | ||
2731 | sal = sals.sals[0]; | |
c8950965 | 2732 | free ((PTR)sals.sals); /* malloc'd, so freed */ |
bd5635a1 RP |
2733 | |
2734 | if (*arg) | |
2735 | error ("Junk at end of arguments."); | |
2736 | ||
30875e1c | 2737 | resolve_sal_pc (&sal); |
bd5635a1 | 2738 | |
30875e1c | 2739 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
bd5635a1 | 2740 | |
30875e1c SG |
2741 | old_chain = make_cleanup(delete_breakpoint, breakpoint); |
2742 | ||
bd5635a1 RP |
2743 | /* Keep within the current frame */ |
2744 | ||
2745 | if (prev_frame) | |
2746 | { | |
706dc3ce JL |
2747 | sal = find_pc_line (prev_frame->pc, 0); |
2748 | sal.pc = prev_frame->pc; | |
30875e1c SG |
2749 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); |
2750 | make_cleanup(delete_breakpoint, breakpoint); | |
bd5635a1 RP |
2751 | } |
2752 | ||
d7e7e851 | 2753 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
30875e1c | 2754 | do_cleanups(old_chain); |
bd5635a1 RP |
2755 | } |
2756 | \f | |
bdbd5f50 JG |
2757 | #if 0 |
2758 | /* These aren't used; I don't konw what they were for. */ | |
bd5635a1 RP |
2759 | /* Set a breakpoint at the catch clause for NAME. */ |
2760 | static int | |
2761 | catch_breakpoint (name) | |
2762 | char *name; | |
2763 | { | |
2764 | } | |
2765 | ||
2766 | static int | |
2767 | disable_catch_breakpoint () | |
2768 | { | |
2769 | } | |
2770 | ||
2771 | static int | |
2772 | delete_catch_breakpoint () | |
2773 | { | |
2774 | } | |
2775 | ||
2776 | static int | |
2777 | enable_catch_breakpoint () | |
2778 | { | |
2779 | } | |
bdbd5f50 | 2780 | #endif /* 0 */ |
bd5635a1 RP |
2781 | |
2782 | struct sal_chain | |
2783 | { | |
2784 | struct sal_chain *next; | |
2785 | struct symtab_and_line sal; | |
2786 | }; | |
2787 | ||
bdbd5f50 JG |
2788 | #if 0 |
2789 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 RP |
2790 | /* For each catch clause identified in ARGS, run FUNCTION |
2791 | with that clause as an argument. */ | |
2792 | static struct symtabs_and_lines | |
2793 | map_catch_names (args, function) | |
2794 | char *args; | |
2795 | int (*function)(); | |
2796 | { | |
2797 | register char *p = args; | |
2798 | register char *p1; | |
2799 | struct symtabs_and_lines sals; | |
bdbd5f50 | 2800 | #if 0 |
bd5635a1 | 2801 | struct sal_chain *sal_chain = 0; |
bdbd5f50 | 2802 | #endif |
bd5635a1 RP |
2803 | |
2804 | if (p == 0) | |
2805 | error_no_arg ("one or more catch names"); | |
2806 | ||
2807 | sals.nelts = 0; | |
2808 | sals.sals = NULL; | |
2809 | ||
2810 | while (*p) | |
2811 | { | |
2812 | p1 = p; | |
2813 | /* Don't swallow conditional part. */ | |
2814 | if (p1[0] == 'i' && p1[1] == 'f' | |
2815 | && (p1[2] == ' ' || p1[2] == '\t')) | |
2816 | break; | |
2817 | ||
2818 | if (isalpha (*p1)) | |
2819 | { | |
2820 | p1++; | |
2821 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
2822 | p1++; | |
2823 | } | |
2824 | ||
2825 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
2826 | error ("Arguments must be catch names."); | |
2827 | ||
2828 | *p1 = 0; | |
2829 | #if 0 | |
2830 | if (function (p)) | |
2831 | { | |
2832 | struct sal_chain *next | |
2833 | = (struct sal_chain *)alloca (sizeof (struct sal_chain)); | |
2834 | next->next = sal_chain; | |
2835 | next->sal = get_catch_sal (p); | |
2836 | sal_chain = next; | |
2837 | goto win; | |
2838 | } | |
2839 | #endif | |
199b2450 | 2840 | printf_unfiltered ("No catch clause for exception %s.\n", p); |
bdbd5f50 | 2841 | #if 0 |
bd5635a1 | 2842 | win: |
bdbd5f50 | 2843 | #endif |
bd5635a1 RP |
2844 | p = p1; |
2845 | while (*p == ' ' || *p == '\t') p++; | |
2846 | } | |
2847 | } | |
bdbd5f50 | 2848 | #endif /* 0 */ |
bd5635a1 RP |
2849 | |
2850 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
2851 | ||
2852 | static struct symtabs_and_lines | |
2853 | get_catch_sals (this_level_only) | |
2854 | int this_level_only; | |
2855 | { | |
bd5635a1 | 2856 | register struct blockvector *bl; |
777bef06 | 2857 | register struct block *block; |
bd5635a1 | 2858 | int index, have_default = 0; |
777bef06 | 2859 | CORE_ADDR pc; |
bd5635a1 RP |
2860 | struct symtabs_and_lines sals; |
2861 | struct sal_chain *sal_chain = 0; | |
2862 | char *blocks_searched; | |
2863 | ||
777bef06 JK |
2864 | /* Not sure whether an error message is always the correct response, |
2865 | but it's better than a core dump. */ | |
2866 | if (selected_frame == NULL) | |
2867 | error ("No selected frame."); | |
2868 | block = get_frame_block (selected_frame); | |
706dc3ce | 2869 | pc = selected_frame->pc; |
777bef06 | 2870 | |
bd5635a1 RP |
2871 | sals.nelts = 0; |
2872 | sals.sals = NULL; | |
2873 | ||
2874 | if (block == 0) | |
2875 | error ("No symbol table info available.\n"); | |
2876 | ||
2877 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
2878 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4ed3a9ea | 2879 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
2880 | |
2881 | while (block != 0) | |
2882 | { | |
2883 | CORE_ADDR end = BLOCK_END (block) - 4; | |
2884 | int last_index; | |
2885 | ||
2886 | if (bl != blockvector_for_pc (end, &index)) | |
2887 | error ("blockvector blotch"); | |
2888 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
2889 | error ("blockvector botch"); | |
2890 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
2891 | index += 1; | |
2892 | ||
2893 | /* Don't print out blocks that have gone by. */ | |
2894 | while (index < last_index | |
2895 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
2896 | index++; | |
2897 | ||
2898 | while (index < last_index | |
2899 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
2900 | { | |
2901 | if (blocks_searched[index] == 0) | |
2902 | { | |
2903 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
2904 | int nsyms; | |
2905 | register int i; | |
2906 | register struct symbol *sym; | |
2907 | ||
2908 | nsyms = BLOCK_NSYMS (b); | |
2909 | ||
2910 | for (i = 0; i < nsyms; i++) | |
2911 | { | |
2912 | sym = BLOCK_SYM (b, i); | |
2d313932 | 2913 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
2914 | { |
2915 | if (have_default) | |
2916 | continue; | |
2917 | have_default = 1; | |
2918 | } | |
2919 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
2920 | { | |
2921 | struct sal_chain *next = (struct sal_chain *) | |
2922 | alloca (sizeof (struct sal_chain)); | |
2923 | next->next = sal_chain; | |
2924 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
2925 | sal_chain = next; | |
2926 | } | |
2927 | } | |
2928 | blocks_searched[index] = 1; | |
2929 | } | |
2930 | index++; | |
2931 | } | |
2932 | if (have_default) | |
2933 | break; | |
2934 | if (sal_chain && this_level_only) | |
2935 | break; | |
2936 | ||
2937 | /* After handling the function's top-level block, stop. | |
2938 | Don't continue to its superblock, the block of | |
2939 | per-file symbols. */ | |
2940 | if (BLOCK_FUNCTION (block)) | |
2941 | break; | |
2942 | block = BLOCK_SUPERBLOCK (block); | |
2943 | } | |
2944 | ||
2945 | if (sal_chain) | |
2946 | { | |
2947 | struct sal_chain *tmp_chain; | |
2948 | ||
2949 | /* Count the number of entries. */ | |
2950 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
2951 | tmp_chain = tmp_chain->next) | |
2952 | index++; | |
2953 | ||
2954 | sals.nelts = index; | |
2955 | sals.sals = (struct symtab_and_line *) | |
2956 | xmalloc (index * sizeof (struct symtab_and_line)); | |
2957 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
2958 | sals.sals[index] = sal_chain->sal; | |
2959 | } | |
2960 | ||
2961 | return sals; | |
2962 | } | |
2963 | ||
2964 | /* Commands to deal with catching exceptions. */ | |
2965 | ||
30875e1c | 2966 | static void |
bd5635a1 RP |
2967 | catch_command_1 (arg, tempflag, from_tty) |
2968 | char *arg; | |
2969 | int tempflag; | |
2970 | int from_tty; | |
2971 | { | |
2972 | /* First, translate ARG into something we can deal with in terms | |
2973 | of breakpoints. */ | |
2974 | ||
2975 | struct symtabs_and_lines sals; | |
2976 | struct symtab_and_line sal; | |
2977 | register struct expression *cond = 0; | |
2978 | register struct breakpoint *b; | |
2979 | char *save_arg; | |
2980 | int i; | |
bd5635a1 RP |
2981 | |
2982 | sal.line = sal.pc = sal.end = 0; | |
2983 | sal.symtab = 0; | |
2984 | ||
2985 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
2986 | are breakpointed. */ | |
2987 | ||
2988 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2989 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2990 | { | |
2991 | /* Grab all active catch clauses. */ | |
2992 | sals = get_catch_sals (0); | |
2993 | } | |
2994 | else | |
2995 | { | |
2996 | /* Grab selected catch clauses. */ | |
fe675038 | 2997 | error ("catch NAME not implemented"); |
bdbd5f50 JG |
2998 | #if 0 |
2999 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 | 3000 | sals = map_catch_names (arg, catch_breakpoint); |
bdbd5f50 | 3001 | #endif |
bd5635a1 RP |
3002 | } |
3003 | ||
3004 | if (! sals.nelts) | |
3005 | return; | |
3006 | ||
3007 | save_arg = arg; | |
3008 | for (i = 0; i < sals.nelts; i++) | |
3009 | { | |
30875e1c | 3010 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
3011 | |
3012 | while (arg && *arg) | |
3013 | { | |
3014 | if (arg[0] == 'i' && arg[1] == 'f' | |
3015 | && (arg[2] == ' ' || arg[2] == '\t')) | |
30875e1c SG |
3016 | cond = parse_exp_1 ((arg += 2, &arg), |
3017 | block_for_pc (sals.sals[i].pc), 0); | |
bd5635a1 RP |
3018 | else |
3019 | error ("Junk at end of arguments."); | |
3020 | } | |
3021 | arg = save_arg; | |
bd5635a1 RP |
3022 | } |
3023 | ||
3024 | for (i = 0; i < sals.nelts; i++) | |
3025 | { | |
3026 | sal = sals.sals[i]; | |
3027 | ||
3028 | if (from_tty) | |
3029 | describe_other_breakpoints (sal.pc); | |
3030 | ||
3031 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
3032 | set_breakpoint_count (breakpoint_count + 1); |
3033 | b->number = breakpoint_count; | |
3034 | b->type = bp_breakpoint; | |
bd5635a1 | 3035 | b->cond = cond; |
30875e1c | 3036 | b->enable = enabled; |
e8bf33c4 | 3037 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 | 3038 | |
d889f6b7 | 3039 | mention (b); |
bd5635a1 RP |
3040 | } |
3041 | ||
3042 | if (sals.nelts > 1) | |
3043 | { | |
199b2450 TL |
3044 | printf_unfiltered ("Multiple breakpoints were set.\n"); |
3045 | printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 3046 | } |
c8950965 | 3047 | free ((PTR)sals.sals); |
bd5635a1 RP |
3048 | } |
3049 | ||
e8bf33c4 JK |
3050 | /* Used by the gui, could be made a worker for other things. */ |
3051 | ||
3052 | struct breakpoint * | |
3053 | set_breakpoint_sal (sal) | |
3054 | struct symtab_and_line sal; | |
3055 | { | |
3056 | struct breakpoint *b; | |
3057 | b = set_raw_breakpoint (sal); | |
3058 | set_breakpoint_count (breakpoint_count + 1); | |
3059 | b->number = breakpoint_count; | |
3060 | b->type = bp_breakpoint; | |
3061 | b->cond = 0; | |
3062 | b->thread = -1; | |
3063 | return b; | |
3064 | } | |
3065 | ||
bdbd5f50 JG |
3066 | #if 0 |
3067 | /* These aren't used; I don't know what they were for. */ | |
bd5635a1 RP |
3068 | /* Disable breakpoints on all catch clauses described in ARGS. */ |
3069 | static void | |
3070 | disable_catch (args) | |
3071 | char *args; | |
3072 | { | |
3073 | /* Map the disable command to catch clauses described in ARGS. */ | |
3074 | } | |
3075 | ||
3076 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
3077 | static void | |
3078 | enable_catch (args) | |
3079 | char *args; | |
3080 | { | |
3081 | /* Map the disable command to catch clauses described in ARGS. */ | |
3082 | } | |
3083 | ||
3084 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
3085 | static void | |
3086 | delete_catch (args) | |
3087 | char *args; | |
3088 | { | |
3089 | /* Map the delete command to catch clauses described in ARGS. */ | |
3090 | } | |
bdbd5f50 | 3091 | #endif /* 0 */ |
bd5635a1 RP |
3092 | |
3093 | static void | |
3094 | catch_command (arg, from_tty) | |
3095 | char *arg; | |
3096 | int from_tty; | |
3097 | { | |
3098 | catch_command_1 (arg, 0, from_tty); | |
3099 | } | |
3100 | \f | |
3101 | static void | |
3102 | clear_command (arg, from_tty) | |
3103 | char *arg; | |
3104 | int from_tty; | |
3105 | { | |
3106 | register struct breakpoint *b, *b1; | |
3107 | struct symtabs_and_lines sals; | |
3108 | struct symtab_and_line sal; | |
3109 | register struct breakpoint *found; | |
3110 | int i; | |
3111 | ||
3112 | if (arg) | |
3113 | { | |
3114 | sals = decode_line_spec (arg, 1); | |
3115 | } | |
3116 | else | |
3117 | { | |
3118 | sals.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); | |
3119 | sal.line = default_breakpoint_line; | |
3120 | sal.symtab = default_breakpoint_symtab; | |
3121 | sal.pc = 0; | |
3122 | if (sal.symtab == 0) | |
3123 | error ("No source file specified."); | |
3124 | ||
3125 | sals.sals[0] = sal; | |
3126 | sals.nelts = 1; | |
3127 | } | |
3128 | ||
3129 | for (i = 0; i < sals.nelts; i++) | |
3130 | { | |
3131 | /* If exact pc given, clear bpts at that pc. | |
3132 | But if sal.pc is zero, clear all bpts on specified line. */ | |
3133 | sal = sals.sals[i]; | |
3134 | found = (struct breakpoint *) 0; | |
3135 | while (breakpoint_chain | |
d889f6b7 JK |
3136 | && (sal.pc |
3137 | ? breakpoint_chain->address == sal.pc | |
3138 | : (breakpoint_chain->source_file != NULL | |
3139 | && sal.symtab != NULL | |
3140 | && STREQ (breakpoint_chain->source_file, | |
3141 | sal.symtab->filename) | |
bd5635a1 RP |
3142 | && breakpoint_chain->line_number == sal.line))) |
3143 | { | |
3144 | b1 = breakpoint_chain; | |
3145 | breakpoint_chain = b1->next; | |
3146 | b1->next = found; | |
3147 | found = b1; | |
3148 | } | |
3149 | ||
3150 | ALL_BREAKPOINTS (b) | |
3151 | while (b->next | |
30875e1c | 3152 | && b->next->type != bp_watchpoint |
999dd04b | 3153 | && b->next->type != bp_hardware_watchpoint |
11054881 KH |
3154 | && b->next->type != bp_read_watchpoint |
3155 | && b->next->type != bp_access_watchpoint | |
d889f6b7 JK |
3156 | && (sal.pc |
3157 | ? b->next->address == sal.pc | |
3158 | : (b->next->source_file != NULL | |
3159 | && sal.symtab != NULL | |
3160 | && STREQ (b->next->source_file, sal.symtab->filename) | |
bd5635a1 RP |
3161 | && b->next->line_number == sal.line))) |
3162 | { | |
3163 | b1 = b->next; | |
3164 | b->next = b1->next; | |
3165 | b1->next = found; | |
3166 | found = b1; | |
3167 | } | |
3168 | ||
3169 | if (found == 0) | |
3170 | { | |
3171 | if (arg) | |
3172 | error ("No breakpoint at %s.", arg); | |
3173 | else | |
3174 | error ("No breakpoint at this line."); | |
3175 | } | |
3176 | ||
3177 | if (found->next) from_tty = 1; /* Always report if deleted more than one */ | |
199b2450 | 3178 | if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); |
6c803036 | 3179 | breakpoints_changed (); |
bd5635a1 RP |
3180 | while (found) |
3181 | { | |
199b2450 | 3182 | if (from_tty) printf_unfiltered ("%d ", found->number); |
bd5635a1 RP |
3183 | b1 = found->next; |
3184 | delete_breakpoint (found); | |
3185 | found = b1; | |
3186 | } | |
199b2450 | 3187 | if (from_tty) putchar_unfiltered ('\n'); |
bd5635a1 | 3188 | } |
c8950965 | 3189 | free ((PTR)sals.sals); |
bd5635a1 RP |
3190 | } |
3191 | \f | |
3192 | /* Delete breakpoint in BS if they are `delete' breakpoints. | |
3193 | This is called after any breakpoint is hit, or after errors. */ | |
3194 | ||
3195 | void | |
3196 | breakpoint_auto_delete (bs) | |
3197 | bpstat bs; | |
3198 | { | |
3199 | for (; bs; bs = bs->next) | |
e8bf33c4 | 3200 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
cef4c2e7 | 3201 | && bs->stop) |
bd5635a1 RP |
3202 | delete_breakpoint (bs->breakpoint_at); |
3203 | } | |
3204 | ||
3205 | /* Delete a breakpoint and clean up all traces of it in the data structures. */ | |
3206 | ||
30875e1c | 3207 | void |
bd5635a1 RP |
3208 | delete_breakpoint (bpt) |
3209 | struct breakpoint *bpt; | |
3210 | { | |
3211 | register struct breakpoint *b; | |
3212 | register bpstat bs; | |
3213 | ||
754e5da2 SG |
3214 | if (delete_breakpoint_hook) |
3215 | delete_breakpoint_hook (bpt); | |
3216 | ||
bd5635a1 | 3217 | if (bpt->inserted) |
999dd04b JL |
3218 | remove_breakpoint (bpt); |
3219 | ||
bd5635a1 RP |
3220 | if (breakpoint_chain == bpt) |
3221 | breakpoint_chain = bpt->next; | |
3222 | ||
3223 | ALL_BREAKPOINTS (b) | |
3224 | if (b->next == bpt) | |
3225 | { | |
3226 | b->next = bpt->next; | |
3227 | break; | |
3228 | } | |
3229 | ||
3230 | check_duplicates (bpt->address); | |
fe675038 JK |
3231 | /* If this breakpoint was inserted, and there is another breakpoint |
3232 | at the same address, we need to insert the other breakpoint. */ | |
999dd04b | 3233 | if (bpt->inserted |
11054881 KH |
3234 | && bpt->type != bp_hardware_watchpoint |
3235 | && bpt->type != bp_read_watchpoint | |
3236 | && bpt->type != bp_access_watchpoint) | |
fe675038 JK |
3237 | { |
3238 | ALL_BREAKPOINTS (b) | |
ebad9e90 JK |
3239 | if (b->address == bpt->address |
3240 | && !b->duplicate | |
3241 | && b->enable != disabled) | |
fe675038 JK |
3242 | { |
3243 | int val; | |
3244 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
3245 | if (val != 0) | |
3246 | { | |
05052b63 | 3247 | target_terminal_ours_for_output (); |
199b2450 | 3248 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
fe675038 JK |
3249 | memory_error (val, b->address); /* which bombs us out */ |
3250 | } | |
3251 | else | |
3252 | b->inserted = 1; | |
3253 | } | |
3254 | } | |
bd5635a1 RP |
3255 | |
3256 | free_command_lines (&bpt->commands); | |
3257 | if (bpt->cond) | |
d889f6b7 | 3258 | free (bpt->cond); |
bd5635a1 | 3259 | if (bpt->cond_string != NULL) |
d889f6b7 | 3260 | free (bpt->cond_string); |
bd5635a1 | 3261 | if (bpt->addr_string != NULL) |
d889f6b7 | 3262 | free (bpt->addr_string); |
0eaaa46a | 3263 | if (bpt->exp_string != NULL) |
d889f6b7 JK |
3264 | free (bpt->exp_string); |
3265 | if (bpt->source_file != NULL) | |
3266 | free (bpt->source_file); | |
bd5635a1 | 3267 | |
bd5635a1 | 3268 | /* Be sure no bpstat's are pointing at it after it's been freed. */ |
05052b63 JK |
3269 | /* FIXME, how can we find all bpstat's? |
3270 | We just check stop_bpstat for now. */ | |
bd5635a1 RP |
3271 | for (bs = stop_bpstat; bs; bs = bs->next) |
3272 | if (bs->breakpoint_at == bpt) | |
3273 | bs->breakpoint_at = NULL; | |
c8950965 | 3274 | free ((PTR)bpt); |
bd5635a1 RP |
3275 | } |
3276 | ||
bd5635a1 RP |
3277 | static void |
3278 | delete_command (arg, from_tty) | |
3279 | char *arg; | |
3280 | int from_tty; | |
3281 | { | |
3282 | ||
3283 | if (arg == 0) | |
3284 | { | |
3285 | /* Ask user only if there are some breakpoints to delete. */ | |
3286 | if (!from_tty | |
e8bf33c4 | 3287 | || (breakpoint_chain && query ("Delete all breakpoints? "))) |
bd5635a1 RP |
3288 | { |
3289 | /* No arg; clear all breakpoints. */ | |
3290 | while (breakpoint_chain) | |
3291 | delete_breakpoint (breakpoint_chain); | |
3292 | } | |
3293 | } | |
3294 | else | |
3295 | map_breakpoint_numbers (arg, delete_breakpoint); | |
3296 | } | |
3297 | ||
bdbd5f50 JG |
3298 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
3299 | The value we return ends up being the return value from catch_errors. | |
3300 | Unused in this case. */ | |
3301 | ||
3302 | static int | |
bd5635a1 | 3303 | breakpoint_re_set_one (bint) |
bdbd5f50 | 3304 | char *bint; |
bd5635a1 RP |
3305 | { |
3306 | struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */ | |
11054881 | 3307 | struct value *mark; |
bd5635a1 RP |
3308 | int i; |
3309 | struct symtabs_and_lines sals; | |
bd5635a1 | 3310 | char *s; |
30875e1c | 3311 | enum enable save_enable; |
bd5635a1 | 3312 | |
80ba48f5 | 3313 | switch (b->type) |
bd5635a1 | 3314 | { |
80ba48f5 | 3315 | case bp_breakpoint: |
11054881 | 3316 | case bp_hardware_breakpoint: |
80ba48f5 SG |
3317 | if (b->addr_string == NULL) |
3318 | { | |
3319 | /* Anything without a string can't be re-set. */ | |
3320 | delete_breakpoint (b); | |
3321 | return 0; | |
3322 | } | |
30875e1c SG |
3323 | /* In case we have a problem, disable this breakpoint. We'll restore |
3324 | its status if we succeed. */ | |
3325 | save_enable = b->enable; | |
3326 | b->enable = disabled; | |
3327 | ||
706dc3ce JL |
3328 | set_language (b->language); |
3329 | input_radix = b->input_radix; | |
bd5635a1 | 3330 | s = b->addr_string; |
d889f6b7 | 3331 | sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
3332 | for (i = 0; i < sals.nelts; i++) |
3333 | { | |
30875e1c | 3334 | resolve_sal_pc (&sals.sals[i]); |
fee933f1 RP |
3335 | |
3336 | /* Reparse conditions, they might contain references to the | |
3337 | old symtab. */ | |
3338 | if (b->cond_string != NULL) | |
3339 | { | |
3340 | s = b->cond_string; | |
3341 | if (b->cond) | |
3342 | free ((PTR)b->cond); | |
3343 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); | |
3344 | } | |
3345 | ||
3346 | /* We need to re-set the breakpoint if the address changes...*/ | |
d889f6b7 | 3347 | if (b->address != sals.sals[i].pc |
fee933f1 RP |
3348 | /* ...or new and old breakpoints both have source files, and |
3349 | the source file name or the line number changes... */ | |
d889f6b7 JK |
3350 | || (b->source_file != NULL |
3351 | && sals.sals[i].symtab != NULL | |
3352 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
3353 | || b->line_number != sals.sals[i].line) | |
fee933f1 RP |
3354 | ) |
3355 | /* ...or we switch between having a source file and not having | |
3356 | one. */ | |
3357 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
3358 | ) | |
bd5635a1 | 3359 | { |
d889f6b7 JK |
3360 | if (b->source_file != NULL) |
3361 | free (b->source_file); | |
3362 | if (sals.sals[i].symtab == NULL) | |
3363 | b->source_file = NULL; | |
3364 | else | |
3365 | b->source_file = | |
3366 | savestring (sals.sals[i].symtab->filename, | |
3367 | strlen (sals.sals[i].symtab->filename)); | |
8537ba60 SG |
3368 | b->line_number = sals.sals[i].line; |
3369 | b->address = sals.sals[i].pc; | |
bd5635a1 | 3370 | |
8537ba60 | 3371 | check_duplicates (b->address); |
bd5635a1 | 3372 | |
8537ba60 | 3373 | mention (b); |
6c803036 JK |
3374 | |
3375 | /* Might be better to do this just once per breakpoint_re_set, | |
3376 | rather than once for every breakpoint. */ | |
3377 | breakpoints_changed (); | |
8537ba60 | 3378 | } |
30875e1c | 3379 | b->enable = save_enable; /* Restore it, this worked. */ |
bd5635a1 | 3380 | } |
c8950965 | 3381 | free ((PTR)sals.sals); |
80ba48f5 | 3382 | break; |
2d313932 | 3383 | |
80ba48f5 | 3384 | case bp_watchpoint: |
999dd04b | 3385 | case bp_hardware_watchpoint: |
11054881 KH |
3386 | case bp_read_watchpoint: |
3387 | case bp_access_watchpoint: | |
0eaaa46a | 3388 | innermost_block = NULL; |
0a97f6c4 JK |
3389 | /* The issue arises of what context to evaluate this in. The same |
3390 | one as when it was set, but what does that mean when symbols have | |
3391 | been re-read? We could save the filename and functionname, but | |
3392 | if the context is more local than that, the best we could do would | |
3393 | be something like how many levels deep and which index at that | |
3394 | particular level, but that's going to be less stable than filenames | |
3395 | or functionnames. */ | |
3396 | /* So for now, just use a global context. */ | |
0eaaa46a JK |
3397 | b->exp = parse_expression (b->exp_string); |
3398 | b->exp_valid_block = innermost_block; | |
11054881 | 3399 | mark = value_mark (); |
0eaaa46a JK |
3400 | b->val = evaluate_expression (b->exp); |
3401 | release_value (b->val); | |
3402 | if (VALUE_LAZY (b->val)) | |
3403 | value_fetch_lazy (b->val); | |
3404 | ||
2d313932 JK |
3405 | if (b->cond_string != NULL) |
3406 | { | |
3407 | s = b->cond_string; | |
3408 | b->cond = parse_exp_1 (&s, (struct block *)0, 0); | |
3409 | } | |
cabd4da6 JK |
3410 | if (b->enable == enabled) |
3411 | mention (b); | |
11054881 | 3412 | value_free_to_mark (mark); |
80ba48f5 | 3413 | break; |
2d313932 | 3414 | |
80ba48f5 SG |
3415 | default: |
3416 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
2d313932 | 3417 | /* fall through */ |
80ba48f5 SG |
3418 | case bp_until: |
3419 | case bp_finish: | |
3420 | case bp_longjmp: | |
3421 | case bp_longjmp_resume: | |
999dd04b | 3422 | case bp_watchpoint_scope: |
cf3e377e | 3423 | case bp_call_dummy: |
80ba48f5 SG |
3424 | delete_breakpoint (b); |
3425 | break; | |
bd5635a1 | 3426 | } |
80ba48f5 | 3427 | |
bdbd5f50 | 3428 | return 0; |
bd5635a1 RP |
3429 | } |
3430 | ||
3431 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
3432 | void | |
3433 | breakpoint_re_set () | |
3434 | { | |
cba0d141 | 3435 | struct breakpoint *b, *temp; |
706dc3ce JL |
3436 | enum language save_language; |
3437 | int save_input_radix; | |
30875e1c SG |
3438 | static char message1[] = "Error in re-setting breakpoint %d:\n"; |
3439 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 | 3440 | |
706dc3ce JL |
3441 | save_language = current_language->la_language; |
3442 | save_input_radix = input_radix; | |
cba0d141 | 3443 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 3444 | { |
2d313932 | 3445 | sprintf (message, message1, b->number); /* Format possible error msg */ |
fe675038 JK |
3446 | catch_errors (breakpoint_re_set_one, (char *) b, message, |
3447 | RETURN_MASK_ALL); | |
bd5635a1 | 3448 | } |
706dc3ce JL |
3449 | set_language (save_language); |
3450 | input_radix = save_input_radix; | |
bd5635a1 | 3451 | |
80ba48f5 SG |
3452 | create_longjmp_breakpoint("longjmp"); |
3453 | create_longjmp_breakpoint("_longjmp"); | |
3454 | create_longjmp_breakpoint("siglongjmp"); | |
3455 | create_longjmp_breakpoint(NULL); | |
3456 | ||
1eeba686 PB |
3457 | #if 0 |
3458 | /* Took this out (temporaliy at least), since it produces an extra | |
3459 | blank line at startup. This messes up the gdbtests. -PB */ | |
bd5635a1 RP |
3460 | /* Blank line to finish off all those mention() messages we just printed. */ |
3461 | printf_filtered ("\n"); | |
1eeba686 | 3462 | #endif |
bd5635a1 RP |
3463 | } |
3464 | \f | |
3465 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
3466 | If from_tty is nonzero, it prints a message to that effect, | |
3467 | which ends with a period (no newline). */ | |
3468 | ||
3469 | void | |
3470 | set_ignore_count (bptnum, count, from_tty) | |
3471 | int bptnum, count, from_tty; | |
3472 | { | |
3473 | register struct breakpoint *b; | |
3474 | ||
3475 | if (count < 0) | |
3476 | count = 0; | |
3477 | ||
3478 | ALL_BREAKPOINTS (b) | |
3479 | if (b->number == bptnum) | |
3480 | { | |
3481 | b->ignore_count = count; | |
3482 | if (!from_tty) | |
3483 | return; | |
3484 | else if (count == 0) | |
423e9664 SG |
3485 | printf_filtered ("Will stop next time breakpoint %d is reached.", |
3486 | bptnum); | |
bd5635a1 | 3487 | else if (count == 1) |
423e9664 SG |
3488 | printf_filtered ("Will ignore next crossing of breakpoint %d.", |
3489 | bptnum); | |
bd5635a1 | 3490 | else |
423e9664 | 3491 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", |
bd5635a1 | 3492 | count, bptnum); |
6c803036 | 3493 | breakpoints_changed (); |
bd5635a1 RP |
3494 | return; |
3495 | } | |
3496 | ||
3497 | error ("No breakpoint number %d.", bptnum); | |
3498 | } | |
3499 | ||
3500 | /* Clear the ignore counts of all breakpoints. */ | |
3501 | void | |
3502 | breakpoint_clear_ignore_counts () | |
3503 | { | |
3504 | struct breakpoint *b; | |
3505 | ||
3506 | ALL_BREAKPOINTS (b) | |
3507 | b->ignore_count = 0; | |
3508 | } | |
3509 | ||
3510 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
3511 | ||
3512 | static void | |
3513 | ignore_command (args, from_tty) | |
3514 | char *args; | |
3515 | int from_tty; | |
3516 | { | |
3517 | char *p = args; | |
3518 | register int num; | |
3519 | ||
3520 | if (p == 0) | |
3521 | error_no_arg ("a breakpoint number"); | |
3522 | ||
3523 | num = get_number (&p); | |
3524 | ||
3525 | if (*p == 0) | |
3526 | error ("Second argument (specified ignore-count) is missing."); | |
3527 | ||
bdbd5f50 JG |
3528 | set_ignore_count (num, |
3529 | longest_to_int (value_as_long (parse_and_eval (p))), | |
3530 | from_tty); | |
423e9664 | 3531 | printf_filtered ("\n"); |
6c803036 | 3532 | breakpoints_changed (); |
bd5635a1 RP |
3533 | } |
3534 | \f | |
3535 | /* Call FUNCTION on each of the breakpoints | |
3536 | whose numbers are given in ARGS. */ | |
3537 | ||
3538 | static void | |
3539 | map_breakpoint_numbers (args, function) | |
3540 | char *args; | |
30875e1c | 3541 | void (*function) PARAMS ((struct breakpoint *)); |
bd5635a1 RP |
3542 | { |
3543 | register char *p = args; | |
3544 | char *p1; | |
3545 | register int num; | |
3546 | register struct breakpoint *b; | |
3547 | ||
3548 | if (p == 0) | |
3549 | error_no_arg ("one or more breakpoint numbers"); | |
3550 | ||
3551 | while (*p) | |
3552 | { | |
3553 | p1 = p; | |
3554 | ||
3555 | num = get_number (&p1); | |
3556 | ||
3557 | ALL_BREAKPOINTS (b) | |
3558 | if (b->number == num) | |
3559 | { | |
999dd04b | 3560 | struct breakpoint *related_breakpoint = b->related_breakpoint; |
bd5635a1 | 3561 | function (b); |
999dd04b JL |
3562 | if (related_breakpoint) |
3563 | function (related_breakpoint); | |
bd5635a1 RP |
3564 | goto win; |
3565 | } | |
199b2450 | 3566 | printf_unfiltered ("No breakpoint number %d.\n", num); |
bd5635a1 RP |
3567 | win: |
3568 | p = p1; | |
3569 | } | |
3570 | } | |
3571 | ||
e8bf33c4 | 3572 | void |
bd5635a1 RP |
3573 | enable_breakpoint (bpt) |
3574 | struct breakpoint *bpt; | |
3575 | { | |
706dc3ce | 3576 | struct frame_info *save_selected_frame = NULL; |
fa99ebe1 | 3577 | int save_selected_frame_level = -1; |
11054881 KH |
3578 | int target_resources_ok, other_type_used; |
3579 | struct value *mark; | |
fa99ebe1 | 3580 | |
11054881 KH |
3581 | if (bpt->type == bp_hardware_breakpoint) |
3582 | { | |
3583 | int i; | |
3584 | i = hw_breakpoint_used_count(); | |
3585 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3586 | bp_hardware_breakpoint, i+1, 0); | |
3587 | if (target_resources_ok == 0) | |
3588 | error ("No hardware breakpoint support in the target."); | |
3589 | else if (target_resources_ok < 0) | |
3590 | error ("Hardware breakpoints used exceeds limit."); | |
3591 | } | |
bd5635a1 | 3592 | bpt->enable = enabled; |
bd5635a1 | 3593 | check_duplicates (bpt->address); |
11054881 KH |
3594 | |
3595 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3596 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
bd5635a1 | 3597 | { |
fa99ebe1 | 3598 | if (bpt->exp_valid_block != NULL) |
f266e564 | 3599 | { |
706dc3ce JL |
3600 | struct frame_info *fr = |
3601 | find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
fa99ebe1 JK |
3602 | if (fr == NULL) |
3603 | { | |
3604 | printf_filtered ("\ | |
f266e564 JK |
3605 | Cannot enable watchpoint %d because the block in which its expression\n\ |
3606 | is valid is not currently in scope.\n", bpt->number); | |
fa99ebe1 JK |
3607 | bpt->enable = disabled; |
3608 | return; | |
3609 | } | |
999dd04b | 3610 | |
fa99ebe1 JK |
3611 | save_selected_frame = selected_frame; |
3612 | save_selected_frame_level = selected_frame_level; | |
3613 | select_frame (fr, -1); | |
f266e564 JK |
3614 | } |
3615 | ||
bd5635a1 | 3616 | value_free (bpt->val); |
11054881 | 3617 | mark = value_mark (); |
bd5635a1 RP |
3618 | bpt->val = evaluate_expression (bpt->exp); |
3619 | release_value (bpt->val); | |
2d313932 JK |
3620 | if (VALUE_LAZY (bpt->val)) |
3621 | value_fetch_lazy (bpt->val); | |
fa99ebe1 | 3622 | |
11054881 KH |
3623 | if (bpt->type == bp_hardware_watchpoint || |
3624 | bpt->type == bp_read_watchpoint || | |
3625 | bpt->type == bp_access_watchpoint) | |
3626 | { | |
3627 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
557f3a0e SS |
3628 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); |
3629 | ||
11054881 | 3630 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( |
557f3a0e | 3631 | bpt->type, i + mem_cnt, other_type_used); |
11054881 KH |
3632 | /* we can consider of type is bp_hardware_watchpoint, convert to |
3633 | bp_watchpoint in the following condition */ | |
3634 | if (target_resources_ok < 0) | |
3635 | { | |
3636 | printf_filtered("\ | |
3637 | Cannot enable watchpoint %d because target watch resources\n\ | |
3638 | have been allocated for other watchpoints.\n", bpt->number); | |
3639 | bpt->enable = disabled; | |
3640 | value_free_to_mark (mark); | |
3641 | return; | |
3642 | } | |
3643 | } | |
3644 | ||
fa99ebe1 JK |
3645 | if (save_selected_frame_level >= 0) |
3646 | select_frame (save_selected_frame, save_selected_frame_level); | |
11054881 | 3647 | value_free_to_mark (mark); |
bd5635a1 | 3648 | } |
e8bf33c4 JK |
3649 | |
3650 | if (modify_breakpoint_hook) | |
3651 | modify_breakpoint_hook (bpt); | |
bd5635a1 RP |
3652 | } |
3653 | ||
bdbd5f50 | 3654 | /* ARGSUSED */ |
bd5635a1 RP |
3655 | static void |
3656 | enable_command (args, from_tty) | |
3657 | char *args; | |
3658 | int from_tty; | |
3659 | { | |
3660 | struct breakpoint *bpt; | |
3661 | if (args == 0) | |
3662 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3663 | switch (bpt->type) |
3664 | { | |
3665 | case bp_breakpoint: | |
11054881 | 3666 | case bp_hardware_breakpoint: |
423e9664 | 3667 | case bp_watchpoint: |
999dd04b | 3668 | case bp_hardware_watchpoint: |
11054881 KH |
3669 | case bp_read_watchpoint: |
3670 | case bp_access_watchpoint: | |
423e9664 SG |
3671 | enable_breakpoint (bpt); |
3672 | default: | |
3673 | continue; | |
3674 | } | |
bd5635a1 RP |
3675 | else |
3676 | map_breakpoint_numbers (args, enable_breakpoint); | |
3677 | } | |
3678 | ||
e8bf33c4 | 3679 | void |
bd5635a1 RP |
3680 | disable_breakpoint (bpt) |
3681 | struct breakpoint *bpt; | |
3682 | { | |
999dd04b JL |
3683 | /* Never disable a watchpoint scope breakpoint; we want to |
3684 | hit them when we leave scope so we can delete both the | |
3685 | watchpoint and its scope breakpoint at that time. */ | |
3686 | if (bpt->type == bp_watchpoint_scope) | |
3687 | return; | |
3688 | ||
bd5635a1 RP |
3689 | bpt->enable = disabled; |
3690 | ||
bd5635a1 | 3691 | check_duplicates (bpt->address); |
e8bf33c4 JK |
3692 | |
3693 | if (modify_breakpoint_hook) | |
3694 | modify_breakpoint_hook (bpt); | |
bd5635a1 RP |
3695 | } |
3696 | ||
bdbd5f50 | 3697 | /* ARGSUSED */ |
bd5635a1 RP |
3698 | static void |
3699 | disable_command (args, from_tty) | |
3700 | char *args; | |
3701 | int from_tty; | |
3702 | { | |
3703 | register struct breakpoint *bpt; | |
3704 | if (args == 0) | |
3705 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3706 | switch (bpt->type) |
3707 | { | |
3708 | case bp_breakpoint: | |
11054881 KH |
3709 | case bp_hardware_breakpoint: |
3710 | case bp_watchpoint: | |
3711 | case bp_hardware_watchpoint: | |
3712 | case bp_read_watchpoint: | |
3713 | case bp_access_watchpoint: | |
423e9664 SG |
3714 | disable_breakpoint (bpt); |
3715 | default: | |
3716 | continue; | |
3717 | } | |
bd5635a1 RP |
3718 | else |
3719 | map_breakpoint_numbers (args, disable_breakpoint); | |
3720 | } | |
3721 | ||
3722 | static void | |
3723 | enable_once_breakpoint (bpt) | |
3724 | struct breakpoint *bpt; | |
3725 | { | |
706dc3ce | 3726 | struct frame_info *save_selected_frame = NULL; |
11054881 KH |
3727 | int save_selected_frame_level = -1; |
3728 | int target_resources_ok, other_type_used; | |
3729 | struct value *mark; | |
3730 | ||
3731 | if (bpt->type == bp_hardware_breakpoint) | |
3732 | { | |
3733 | int i; | |
3734 | i = hw_breakpoint_used_count(); | |
3735 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3736 | bp_hardware_breakpoint, i+1, 0); | |
3737 | if (target_resources_ok == 0) | |
3738 | error ("No hardware breakpoint support in the target."); | |
3739 | else if (target_resources_ok < 0) | |
3740 | error ("Hardware breakpoints used exceeds limit."); | |
3741 | } | |
3742 | ||
30875e1c SG |
3743 | bpt->enable = enabled; |
3744 | bpt->disposition = disable; | |
bd5635a1 | 3745 | check_duplicates (bpt->address); |
6c803036 | 3746 | breakpoints_changed (); |
11054881 KH |
3747 | |
3748 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3749 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
3750 | { | |
3751 | if (bpt->exp_valid_block != NULL) | |
3752 | { | |
706dc3ce JL |
3753 | struct frame_info *fr = |
3754 | find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
11054881 KH |
3755 | if (fr == NULL) |
3756 | { | |
3757 | printf_filtered ("\ | |
3758 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
3759 | is valid is not currently in scope.\n", bpt->number); | |
3760 | bpt->enable = disabled; | |
3761 | return; | |
3762 | } | |
3763 | ||
3764 | save_selected_frame = selected_frame; | |
3765 | save_selected_frame_level = selected_frame_level; | |
3766 | select_frame (fr, -1); | |
3767 | } | |
3768 | ||
3769 | value_free (bpt->val); | |
3770 | mark = value_mark (); | |
3771 | bpt->val = evaluate_expression (bpt->exp); | |
3772 | release_value (bpt->val); | |
3773 | if (VALUE_LAZY (bpt->val)) | |
3774 | value_fetch_lazy (bpt->val); | |
3775 | ||
3776 | if (bpt->type == bp_hardware_watchpoint || | |
3777 | bpt->type == bp_read_watchpoint || | |
3778 | bpt->type == bp_access_watchpoint) | |
3779 | { | |
3780 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3781 | int mem_cnt = can_use_hardware_watchpoint(bpt->val); | |
3782 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3783 | bpt->type, i+mem_cnt, other_type_used); | |
3784 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
3785 | bp_watchpoint in the following condition */ | |
3786 | if (target_resources_ok < 0) | |
3787 | { | |
3788 | printf_filtered("\ | |
3789 | Cannot enable watchpoint %d because target watch resources\n\ | |
3790 | have been allocated for other watchpoints.\n", bpt->number); | |
3791 | bpt->enable = disabled; | |
3792 | value_free_to_mark (mark); | |
3793 | } | |
3794 | } | |
3795 | ||
3796 | if (save_selected_frame_level >= 0) | |
3797 | select_frame (save_selected_frame, save_selected_frame_level); | |
3798 | value_free_to_mark (mark); | |
3799 | } | |
bd5635a1 RP |
3800 | } |
3801 | ||
bdbd5f50 | 3802 | /* ARGSUSED */ |
bd5635a1 RP |
3803 | static void |
3804 | enable_once_command (args, from_tty) | |
3805 | char *args; | |
3806 | int from_tty; | |
3807 | { | |
3808 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
3809 | } | |
3810 | ||
3811 | static void | |
3812 | enable_delete_breakpoint (bpt) | |
3813 | struct breakpoint *bpt; | |
3814 | { | |
30875e1c | 3815 | bpt->enable = enabled; |
e8bf33c4 | 3816 | bpt->disposition = del; |
bd5635a1 RP |
3817 | |
3818 | check_duplicates (bpt->address); | |
6c803036 | 3819 | breakpoints_changed (); |
bd5635a1 RP |
3820 | } |
3821 | ||
bdbd5f50 | 3822 | /* ARGSUSED */ |
bd5635a1 RP |
3823 | static void |
3824 | enable_delete_command (args, from_tty) | |
3825 | char *args; | |
3826 | int from_tty; | |
3827 | { | |
3828 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
3829 | } | |
3830 | \f | |
706dc3ce JL |
3831 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
3832 | ||
bd5635a1 RP |
3833 | struct symtabs_and_lines |
3834 | decode_line_spec_1 (string, funfirstline) | |
3835 | char *string; | |
3836 | int funfirstline; | |
3837 | { | |
3838 | struct symtabs_and_lines sals; | |
3839 | if (string == 0) | |
3840 | error ("Empty line specification."); | |
3841 | if (default_breakpoint_valid) | |
3842 | sals = decode_line_1 (&string, funfirstline, | |
d889f6b7 JK |
3843 | default_breakpoint_symtab, default_breakpoint_line, |
3844 | (char ***)NULL); | |
bd5635a1 | 3845 | else |
d889f6b7 JK |
3846 | sals = decode_line_1 (&string, funfirstline, |
3847 | (struct symtab *)NULL, 0, (char ***)NULL); | |
bd5635a1 RP |
3848 | if (*string) |
3849 | error ("Junk at end of line specification: %s", string); | |
3850 | return sals; | |
3851 | } | |
3852 | \f | |
bd5635a1 RP |
3853 | void |
3854 | _initialize_breakpoint () | |
3855 | { | |
3856 | breakpoint_chain = 0; | |
3857 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
3858 | before a breakpoint is set. */ | |
3859 | breakpoint_count = 0; | |
3860 | ||
3861 | add_com ("ignore", class_breakpoint, ignore_command, | |
557f3a0e SS |
3862 | "Set ignore-count of breakpoint number N to COUNT.\n\ |
3863 | Usage is `ignore N COUNT'."); | |
bd5635a1 RP |
3864 | |
3865 | add_com ("commands", class_breakpoint, commands_command, | |
3866 | "Set commands to be executed when a breakpoint is hit.\n\ | |
3867 | Give breakpoint number as argument after \"commands\".\n\ | |
3868 | With no argument, the targeted breakpoint is the last one set.\n\ | |
3869 | The commands themselves follow starting on the next line.\n\ | |
3870 | Type a line containing \"end\" to indicate the end of them.\n\ | |
3871 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
3872 | then no output is printed when it is hit, except what the commands print."); | |
3873 | ||
3874 | add_com ("condition", class_breakpoint, condition_command, | |
3875 | "Specify breakpoint number N to break only if COND is true.\n\ | |
557f3a0e SS |
3876 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
3877 | expression to be evaluated whenever breakpoint N is reached. "); | |
bd5635a1 RP |
3878 | |
3879 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
3880 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c4de6b30 JK |
3881 | Like \"break\" except the breakpoint is only temporary,\n\ |
3882 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
3883 | by using \"enable delete\" on the breakpoint number."); | |
bd5635a1 | 3884 | |
11054881 KH |
3885 | add_com ("hbreak", class_breakpoint, hbreak_command, |
3886 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3887 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
3888 | some target hardware may not have this support."); | |
3889 | ||
3890 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
3891 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
3892 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
3893 | so it will be deleted when hit."); | |
3894 | ||
bd5635a1 RP |
3895 | add_prefix_cmd ("enable", class_breakpoint, enable_command, |
3896 | "Enable some breakpoints.\n\ | |
3897 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3898 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
3899 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3900 | With a subcommand you can enable temporarily.", | |
3901 | &enablelist, "enable ", 1, &cmdlist); | |
3902 | ||
3903 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
3904 | "Enable some breakpoints.\n\ | |
3905 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
3906 | This is used to cancel the effect of the \"disable\" command.\n\ | |
3907 | May be abbreviated to simply \"enable\".\n", | |
3908 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); | |
3909 | ||
3910 | add_cmd ("once", no_class, enable_once_command, | |
3911 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3912 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3913 | &enablebreaklist); |
3914 | ||
3915 | add_cmd ("delete", no_class, enable_delete_command, | |
3916 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3917 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3918 | &enablebreaklist); | |
3919 | ||
3920 | add_cmd ("delete", no_class, enable_delete_command, | |
3921 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
3922 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
3923 | &enablelist); | |
3924 | ||
3925 | add_cmd ("once", no_class, enable_once_command, | |
3926 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 3927 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
3928 | &enablelist); |
3929 | ||
3930 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
3931 | "Disable some breakpoints.\n\ | |
3932 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3933 | To disable all breakpoints, give no argument.\n\ | |
3934 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
3935 | &disablelist, "disable ", 1, &cmdlist); | |
3936 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
3937 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
3938 | ||
3939 | add_cmd ("breakpoints", class_alias, disable_command, | |
3940 | "Disable some breakpoints.\n\ | |
3941 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3942 | To disable all breakpoints, give no argument.\n\ | |
3943 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
3944 | This command may be abbreviated \"disable\".", | |
3945 | &disablelist); | |
3946 | ||
3947 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
3948 | "Delete some breakpoints or auto-display expressions.\n\ | |
3949 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3950 | To delete all breakpoints, give no argument.\n\ | |
3951 | \n\ | |
3952 | Also a prefix command for deletion of other GDB objects.\n\ | |
3953 | The \"unset\" command is also an alias for \"delete\".", | |
3954 | &deletelist, "delete ", 1, &cmdlist); | |
3955 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
bd5635a1 RP |
3956 | |
3957 | add_cmd ("breakpoints", class_alias, delete_command, | |
3958 | "Delete some breakpoints or auto-display expressions.\n\ | |
3959 | Arguments are breakpoint numbers with spaces in between.\n\ | |
3960 | To delete all breakpoints, give no argument.\n\ | |
3961 | This command may be abbreviated \"delete\".", | |
3962 | &deletelist); | |
3963 | ||
3964 | add_com ("clear", class_breakpoint, clear_command, | |
706dc3ce | 3965 | concat ("Clear breakpoint at specified line or function.\n\ |
bd5635a1 RP |
3966 | Argument may be line number, function name, or \"*\" and an address.\n\ |
3967 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
3968 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
706dc3ce JL |
3969 | If an address is specified, breakpoints at that address are cleared.\n\n", |
3970 | "With no argument, clears all breakpoints in the line that the selected frame\n\ | |
bd5635a1 RP |
3971 | is executing in.\n\ |
3972 | \n\ | |
706dc3ce | 3973 | See also the \"delete\" command which clears breakpoints by number.", NULL)); |
bd5635a1 RP |
3974 | |
3975 | add_com ("break", class_breakpoint, break_command, | |
706dc3ce | 3976 | concat ("Set breakpoint at specified line or function.\n\ |
bd5635a1 RP |
3977 | Argument may be line number, function name, or \"*\" and an address.\n\ |
3978 | If line number is specified, break at start of code for that line.\n\ | |
3979 | If function is specified, break at start of code for that function.\n\ | |
706dc3ce JL |
3980 | If an address is specified, break at that exact address.\n", |
3981 | "With no arg, uses current execution address of selected stack frame.\n\ | |
bd5635a1 RP |
3982 | This is useful for breaking on return to a stack frame.\n\ |
3983 | \n\ | |
3984 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
3985 | \n\ | |
706dc3ce | 3986 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); |
bd5635a1 RP |
3987 | add_com_alias ("b", "break", class_run, 1); |
3988 | add_com_alias ("br", "break", class_run, 1); | |
3989 | add_com_alias ("bre", "break", class_run, 1); | |
3990 | add_com_alias ("brea", "break", class_run, 1); | |
3991 | ||
3992 | add_info ("breakpoints", breakpoints_info, | |
706dc3ce | 3993 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 3994 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
3995 | \tbreakpoint - normal breakpoint\n\ |
3996 | \twatchpoint - watchpoint\n\ | |
80ba48f5 SG |
3997 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
3998 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
3999 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
4000 | address and file/line number respectively.\n\n", |
4001 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
80ba48f5 SG |
4002 | are set to the address of the last breakpoint listed.\n\n\ |
4003 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 4004 | breakpoint set.", NULL)); |
80ba48f5 | 4005 | |
9b280a7f JG |
4006 | #if MAINTENANCE_CMDS |
4007 | ||
4008 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, | |
706dc3ce | 4009 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 4010 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
4011 | \tbreakpoint - normal breakpoint\n\ |
4012 | \twatchpoint - watchpoint\n\ | |
4013 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
4014 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
4015 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
706dc3ce JL |
4016 | \tfinish - internal breakpoint used by the \"finish\" command\n", |
4017 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
80ba48f5 SG |
4018 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
4019 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
4020 | address and file/line number respectively.\n\n", |
4021 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
bd5635a1 RP |
4022 | are set to the address of the last breakpoint listed.\n\n\ |
4023 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 4024 | breakpoint set.", NULL), |
9b280a7f JG |
4025 | &maintenanceinfolist); |
4026 | ||
4027 | #endif /* MAINTENANCE_CMDS */ | |
bd5635a1 RP |
4028 | |
4029 | add_com ("catch", class_breakpoint, catch_command, | |
4030 | "Set breakpoints to catch exceptions that are raised.\n\ | |
4031 | Argument may be a single exception to catch, multiple exceptions\n\ | |
4032 | to catch, or the default exception \"default\". If no arguments\n\ | |
4033 | are given, breakpoints are set at all exception handlers catch clauses\n\ | |
4034 | within the current scope.\n\ | |
4035 | \n\ | |
4036 | A condition specified for the catch applies to all breakpoints set\n\ | |
4037 | with this command\n\ | |
4038 | \n\ | |
4039 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
4040 | ||
4041 | add_com ("watch", class_breakpoint, watch_command, | |
4042 | "Set a watchpoint for an expression.\n\ | |
4043 | A watchpoint stops execution of your program whenever the value of\n\ | |
4044 | an expression changes."); | |
4045 | ||
11054881 KH |
4046 | add_com ("rwatch", class_breakpoint, rwatch_command, |
4047 | "Set a read watchpoint for an expression.\n\ | |
4048 | A watchpoint stops execution of your program whenever the value of\n\ | |
4049 | an expression is read."); | |
4050 | ||
4051 | add_com ("awatch", class_breakpoint, awatch_command, | |
4052 | "Set a watchpoint for an expression.\n\ | |
4053 | A watchpoint stops execution of your program whenever the value of\n\ | |
4054 | an expression is either read or written."); | |
4055 | ||
c8950965 JG |
4056 | add_info ("watchpoints", breakpoints_info, |
4057 | "Synonym for ``info breakpoints''."); | |
9f577285 | 4058 | |
bd5635a1 | 4059 | } |