Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* Everything about breakpoints, for GDB. |
895cc8ab | 2 | Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998 |
9f577285 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
bdbd5f50 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
bdbd5f50 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
bdbd5f50 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
bdbd5f50 | 18 | along with this program; if not, write to the Free Software |
cd10c7e3 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
bd5635a1 | 20 | |
bd5635a1 | 21 | #include "defs.h" |
1eeba686 | 22 | #include <ctype.h> |
bd5635a1 RP |
23 | #include "symtab.h" |
24 | #include "frame.h" | |
25 | #include "breakpoint.h" | |
30875e1c | 26 | #include "gdbtypes.h" |
bd5635a1 RP |
27 | #include "expression.h" |
28 | #include "gdbcore.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "value.h" | |
bd5635a1 RP |
31 | #include "command.h" |
32 | #include "inferior.h" | |
fdfa3315 | 33 | #include "gdbthread.h" |
bd5635a1 | 34 | #include "target.h" |
d3b9c0df | 35 | #include "language.h" |
2b576293 | 36 | #include "gdb_string.h" |
423e9664 | 37 | #include "demangle.h" |
9f577285 | 38 | #include "annotate.h" |
6b038bd9 DT |
39 | #include "symfile.h" |
40 | #include "objfiles.h" | |
bd5635a1 | 41 | |
92fb1f2e | 42 | /* Prototypes for local functions. */ |
30875e1c | 43 | |
65b07ddc DT |
44 | static void |
45 | catch_command_1 PARAMS ((char *, int, int)); | |
30875e1c | 46 | |
65b07ddc DT |
47 | static void |
48 | enable_delete_command PARAMS ((char *, int)); | |
30875e1c | 49 | |
65b07ddc DT |
50 | static void |
51 | enable_delete_breakpoint PARAMS ((struct breakpoint *)); | |
30875e1c | 52 | |
65b07ddc DT |
53 | static void |
54 | enable_once_command PARAMS ((char *, int)); | |
30875e1c | 55 | |
65b07ddc DT |
56 | static void |
57 | enable_once_breakpoint PARAMS ((struct breakpoint *)); | |
30875e1c | 58 | |
65b07ddc DT |
59 | static void |
60 | disable_command PARAMS ((char *, int)); | |
30875e1c | 61 | |
65b07ddc DT |
62 | static void |
63 | enable_command PARAMS ((char *, int)); | |
30875e1c | 64 | |
65b07ddc DT |
65 | static void |
66 | map_breakpoint_numbers PARAMS ((char *, void (*)(struct breakpoint *))); | |
30875e1c | 67 | |
65b07ddc DT |
68 | static void |
69 | ignore_command PARAMS ((char *, int)); | |
30875e1c | 70 | |
65b07ddc DT |
71 | static int |
72 | breakpoint_re_set_one PARAMS ((char *)); | |
30875e1c | 73 | |
65b07ddc DT |
74 | static void |
75 | clear_command PARAMS ((char *, int)); | |
30875e1c | 76 | |
65b07ddc DT |
77 | static void |
78 | catch_command PARAMS ((char *, int)); | |
30875e1c | 79 | |
65b07ddc DT |
80 | static void |
81 | handle_gnu_4_16_catch_command PARAMS ((char *, int, int)); | |
30875e1c | 82 | |
65b07ddc DT |
83 | static struct symtabs_and_lines |
84 | get_catch_sals PARAMS ((int)); | |
30875e1c | 85 | |
65b07ddc DT |
86 | static void |
87 | watch_command PARAMS ((char *, int)); | |
999dd04b | 88 | |
65b07ddc DT |
89 | static int |
90 | can_use_hardware_watchpoint PARAMS ((struct value *)); | |
30875e1c | 91 | |
65b07ddc DT |
92 | void |
93 | tbreak_command PARAMS ((char *, int)); | |
30875e1c | 94 | |
65b07ddc DT |
95 | static void |
96 | break_command_1 PARAMS ((char *, int, int)); | |
30875e1c | 97 | |
65b07ddc DT |
98 | static void |
99 | mention PARAMS ((struct breakpoint *)); | |
30875e1c | 100 | |
65b07ddc DT |
101 | struct breakpoint * |
102 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); | |
30875e1c | 103 | |
65b07ddc DT |
104 | static void |
105 | check_duplicates PARAMS ((CORE_ADDR, asection *)); | |
30875e1c | 106 | |
65b07ddc DT |
107 | static void |
108 | describe_other_breakpoints PARAMS ((CORE_ADDR, asection *)); | |
30875e1c | 109 | |
65b07ddc DT |
110 | static void |
111 | breakpoints_info PARAMS ((char *, int)); | |
30875e1c | 112 | |
65b07ddc DT |
113 | static void |
114 | breakpoint_1 PARAMS ((int, int)); | |
30875e1c | 115 | |
65b07ddc DT |
116 | static bpstat |
117 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); | |
30875e1c | 118 | |
65b07ddc DT |
119 | static int |
120 | breakpoint_cond_eval PARAMS ((char *)); | |
30875e1c | 121 | |
65b07ddc DT |
122 | static void |
123 | cleanup_executing_breakpoints PARAMS ((PTR)); | |
30875e1c | 124 | |
65b07ddc DT |
125 | static void |
126 | commands_command PARAMS ((char *, int)); | |
30875e1c | 127 | |
65b07ddc DT |
128 | static void |
129 | condition_command PARAMS ((char *, int)); | |
30875e1c | 130 | |
65b07ddc DT |
131 | static int |
132 | get_number PARAMS ((char **)); | |
133 | ||
134 | void | |
135 | set_breakpoint_count PARAMS ((int)); | |
136 | ||
137 | #if 0 | |
138 | static struct breakpoint * | |
139 | create_temp_exception_breakpoint PARAMS ((CORE_ADDR)); | |
140 | #endif | |
141 | ||
142 | typedef enum { | |
143 | mark_inserted, | |
144 | mark_uninserted, | |
145 | } insertion_state_t; | |
146 | ||
147 | static int | |
148 | remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t)); | |
30875e1c | 149 | |
92fb1f2e | 150 | static int print_it_normal PARAMS ((bpstat)); |
b607efe7 | 151 | |
65b07ddc DT |
152 | typedef struct { |
153 | enum exception_event_kind kind; | |
154 | int enable; | |
155 | } args_for_catchpoint_enable; | |
156 | ||
92fb1f2e | 157 | static int watchpoint_check PARAMS ((char *)); |
b607efe7 | 158 | |
65b07ddc DT |
159 | static struct symtab_and_line * |
160 | cover_target_enable_exception_callback PARAMS ((args_for_catchpoint_enable *)); | |
161 | ||
92fb1f2e | 162 | static int print_it_done PARAMS ((bpstat)); |
b607efe7 | 163 | |
92fb1f2e | 164 | static int print_it_noop PARAMS ((bpstat)); |
b607efe7 | 165 | |
92fb1f2e | 166 | static void maintenance_info_breakpoints PARAMS ((char *, int)); |
b607efe7 FF |
167 | |
168 | #ifdef GET_LONGJMP_TARGET | |
92fb1f2e | 169 | static void create_longjmp_breakpoint PARAMS ((char *)); |
b607efe7 FF |
170 | #endif |
171 | ||
92fb1f2e | 172 | static int hw_breakpoint_used_count PARAMS ((void)); |
b607efe7 | 173 | |
92fb1f2e | 174 | static int hw_watchpoint_used_count PARAMS ((enum bptype, int *)); |
b607efe7 | 175 | |
92fb1f2e | 176 | static void hbreak_command PARAMS ((char *, int)); |
b607efe7 | 177 | |
92fb1f2e | 178 | static void thbreak_command PARAMS ((char *, int)); |
b607efe7 | 179 | |
92fb1f2e | 180 | static void watch_command_1 PARAMS ((char *, int, int)); |
b607efe7 | 181 | |
92fb1f2e | 182 | static void rwatch_command PARAMS ((char *, int)); |
b607efe7 | 183 | |
92fb1f2e | 184 | static void awatch_command PARAMS ((char *, int)); |
b607efe7 | 185 | |
92fb1f2e SS |
186 | static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); |
187 | ||
188 | /* Prototypes for exported functions. */ | |
189 | ||
65b07ddc DT |
190 | static void |
191 | awatch_command PARAMS ((char *, int)); | |
192 | ||
193 | static void | |
194 | do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); | |
195 | ||
196 | /* If FALSE, gdb will not use hardware support for watchpoints, even | |
197 | if such is available. */ | |
198 | static int can_use_hw_watchpoints; | |
199 | ||
92fb1f2e SS |
200 | void delete_command PARAMS ((char *, int)); |
201 | ||
202 | void _initialize_breakpoint PARAMS ((void)); | |
203 | ||
204 | void set_breakpoint_count PARAMS ((int)); | |
b607efe7 | 205 | |
bd5635a1 | 206 | extern int addressprint; /* Print machine addresses? */ |
bd5635a1 | 207 | |
6b038bd9 DT |
208 | #if defined (GET_LONGJMP_TARGET) || defined (SOLIB_ADD) |
209 | static int internal_breakpoint_number = -1; | |
210 | #endif | |
211 | ||
bd5635a1 RP |
212 | /* Are we executing breakpoint commands? */ |
213 | static int executing_breakpoint_commands; | |
214 | ||
cba0d141 JG |
215 | /* Walk the following statement or block through all breakpoints. |
216 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
217 | breakpoint. */ | |
218 | ||
bd5635a1 RP |
219 | #define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) |
220 | ||
cba0d141 JG |
221 | #define ALL_BREAKPOINTS_SAFE(b,tmp) \ |
222 | for (b = breakpoint_chain; \ | |
223 | b? (tmp=b->next, 1): 0; \ | |
224 | b = tmp) | |
225 | ||
6b038bd9 DT |
226 | /* True if SHIFT_INST_REGS defined, false otherwise. */ |
227 | ||
228 | int must_shift_inst_regs = | |
229 | #if defined(SHIFT_INST_REGS) | |
230 | 1 | |
231 | #else | |
232 | 0 | |
233 | #endif | |
234 | ; | |
235 | ||
9f577285 SS |
236 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
237 | ||
238 | int show_breakpoint_hit_counts = 1; | |
239 | ||
bd5635a1 RP |
240 | /* Chain of all breakpoints defined. */ |
241 | ||
e8bf33c4 | 242 | struct breakpoint *breakpoint_chain; |
bd5635a1 RP |
243 | |
244 | /* Number of last breakpoint made. */ | |
245 | ||
895cc8ab | 246 | int breakpoint_count; |
bd5635a1 | 247 | |
65b07ddc DT |
248 | /* Pointer to current exception event record */ |
249 | static struct exception_event_record * current_exception_event; | |
250 | ||
251 | /* Indicator of whether exception catchpoints should be nuked | |
252 | between runs of a program */ | |
253 | int exception_catchpoints_are_fragile = 0; | |
254 | ||
255 | /* Indicator of when exception catchpoints set-up should be | |
256 | reinitialized -- e.g. when program is re-run */ | |
257 | int exception_support_initialized = 0; | |
258 | ||
259 | ||
bd5635a1 | 260 | /* Set breakpoint count to NUM. */ |
9f577285 | 261 | |
895cc8ab | 262 | void |
bd5635a1 RP |
263 | set_breakpoint_count (num) |
264 | int num; | |
265 | { | |
266 | breakpoint_count = num; | |
267 | set_internalvar (lookup_internalvar ("bpnum"), | |
06b6c733 | 268 | value_from_longest (builtin_type_int, (LONGEST) num)); |
bd5635a1 RP |
269 | } |
270 | ||
9f577285 SS |
271 | /* Used in run_command to zero the hit count when a new run starts. */ |
272 | ||
273 | void | |
274 | clear_breakpoint_hit_counts () | |
275 | { | |
276 | struct breakpoint *b; | |
277 | ||
278 | ALL_BREAKPOINTS (b) | |
279 | b->hit_count = 0; | |
280 | } | |
281 | ||
bd5635a1 RP |
282 | /* Default address, symtab and line to put a breakpoint at |
283 | for "break" command with no arg. | |
284 | if default_breakpoint_valid is zero, the other three are | |
285 | not valid, and "break" with no arg is an error. | |
286 | ||
287 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
288 | ||
289 | int default_breakpoint_valid; | |
290 | CORE_ADDR default_breakpoint_address; | |
291 | struct symtab *default_breakpoint_symtab; | |
292 | int default_breakpoint_line; | |
bd5635a1 RP |
293 | \f |
294 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
295 | Advance *PP after the string and any trailing whitespace. | |
296 | ||
297 | Currently the string can either be a number or "$" followed by the name | |
298 | of a convenience variable. Making it an expression wouldn't work well | |
299 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
300 | static int | |
301 | get_number (pp) | |
302 | char **pp; | |
303 | { | |
304 | int retval; | |
305 | char *p = *pp; | |
306 | ||
307 | if (p == NULL) | |
308 | /* Empty line means refer to the last breakpoint. */ | |
309 | return breakpoint_count; | |
310 | else if (*p == '$') | |
311 | { | |
312 | /* Make a copy of the name, so we can null-terminate it | |
313 | to pass to lookup_internalvar(). */ | |
314 | char *varname; | |
315 | char *start = ++p; | |
82a2edfb | 316 | value_ptr val; |
bd5635a1 RP |
317 | |
318 | while (isalnum (*p) || *p == '_') | |
319 | p++; | |
320 | varname = (char *) alloca (p - start + 1); | |
321 | strncpy (varname, start, p - start); | |
322 | varname[p - start] = '\0'; | |
323 | val = value_of_internalvar (lookup_internalvar (varname)); | |
324 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
325 | error ( | |
326 | "Convenience variables used to specify breakpoints must have integer values." | |
327 | ); | |
328 | retval = (int) value_as_long (val); | |
329 | } | |
330 | else | |
331 | { | |
80ba48f5 SG |
332 | if (*p == '-') |
333 | ++p; | |
bd5635a1 RP |
334 | while (*p >= '0' && *p <= '9') |
335 | ++p; | |
336 | if (p == *pp) | |
337 | /* There is no number here. (e.g. "cond a == b"). */ | |
338 | error_no_arg ("breakpoint number"); | |
339 | retval = atoi (*pp); | |
340 | } | |
341 | if (!(isspace (*p) || *p == '\0')) | |
342 | error ("breakpoint number expected"); | |
343 | while (isspace (*p)) | |
344 | p++; | |
345 | *pp = p; | |
346 | return retval; | |
347 | } | |
348 | \f | |
349 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
350 | ||
351 | static void | |
352 | condition_command (arg, from_tty) | |
353 | char *arg; | |
354 | int from_tty; | |
355 | { | |
356 | register struct breakpoint *b; | |
357 | char *p; | |
358 | register int bnum; | |
359 | ||
360 | if (arg == 0) | |
361 | error_no_arg ("breakpoint number"); | |
362 | ||
363 | p = arg; | |
364 | bnum = get_number (&p); | |
365 | ||
366 | ALL_BREAKPOINTS (b) | |
367 | if (b->number == bnum) | |
368 | { | |
369 | if (b->cond) | |
370 | { | |
c8950965 | 371 | free ((PTR)b->cond); |
bd5635a1 RP |
372 | b->cond = 0; |
373 | } | |
374 | if (b->cond_string != NULL) | |
c8950965 | 375 | free ((PTR)b->cond_string); |
bd5635a1 RP |
376 | |
377 | if (*p == 0) | |
378 | { | |
379 | b->cond = 0; | |
380 | b->cond_string = NULL; | |
381 | if (from_tty) | |
423e9664 | 382 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); |
bd5635a1 RP |
383 | } |
384 | else | |
385 | { | |
386 | arg = p; | |
387 | /* I don't know if it matters whether this is the string the user | |
388 | typed in or the decompiled expression. */ | |
389 | b->cond_string = savestring (arg, strlen (arg)); | |
d3b9c0df | 390 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); |
bd5635a1 RP |
391 | if (*arg) |
392 | error ("Junk at end of expression"); | |
393 | } | |
16726dd1 | 394 | breakpoints_changed (); |
bd5635a1 RP |
395 | return; |
396 | } | |
397 | ||
398 | error ("No breakpoint number %d.", bnum); | |
399 | } | |
400 | ||
bdbd5f50 | 401 | /* ARGSUSED */ |
bd5635a1 RP |
402 | static void |
403 | commands_command (arg, from_tty) | |
404 | char *arg; | |
405 | int from_tty; | |
406 | { | |
407 | register struct breakpoint *b; | |
408 | char *p; | |
409 | register int bnum; | |
410 | struct command_line *l; | |
411 | ||
412 | /* If we allowed this, we would have problems with when to | |
413 | free the storage, if we change the commands currently | |
414 | being read from. */ | |
415 | ||
416 | if (executing_breakpoint_commands) | |
417 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
418 | ||
419 | p = arg; | |
420 | bnum = get_number (&p); | |
421 | if (p && *p) | |
422 | error ("Unexpected extra arguments following breakpoint number."); | |
423 | ||
424 | ALL_BREAKPOINTS (b) | |
425 | if (b->number == bnum) | |
426 | { | |
41756e56 FF |
427 | char tmpbuf[128]; |
428 | sprintf (tmpbuf, "Type commands for when breakpoint %d is hit, one per line.", bnum); | |
429 | l = read_command_lines (tmpbuf, from_tty); | |
bd5635a1 RP |
430 | free_command_lines (&b->commands); |
431 | b->commands = l; | |
6c803036 | 432 | breakpoints_changed (); |
bd5635a1 RP |
433 | return; |
434 | } | |
435 | error ("No breakpoint number %d.", bnum); | |
436 | } | |
437 | \f | |
31ef19fc | 438 | /* Like target_read_memory() but if breakpoints are inserted, return |
30875e1c SG |
439 | the shadow contents instead of the breakpoints themselves. |
440 | ||
441 | Read "memory data" from whatever target or inferior we have. | |
442 | Returns zero if successful, errno value if not. EIO is used | |
443 | for address out of bounds. If breakpoints are inserted, returns | |
444 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
445 | ||
31ef19fc JK |
446 | int |
447 | read_memory_nobpt (memaddr, myaddr, len) | |
448 | CORE_ADDR memaddr; | |
449 | char *myaddr; | |
450 | unsigned len; | |
451 | { | |
452 | int status; | |
453 | struct breakpoint *b; | |
65b07ddc DT |
454 | CORE_ADDR bp_addr = 0; |
455 | int bp_size = 0; | |
31ef19fc | 456 | |
65b07ddc DT |
457 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) |
458 | /* No breakpoints on this machine. */ | |
31ef19fc JK |
459 | return target_read_memory (memaddr, myaddr, len); |
460 | ||
461 | ALL_BREAKPOINTS (b) | |
462 | { | |
65b07ddc DT |
463 | if (b->type == bp_none) |
464 | warning ("attempted to read through apparently deleted breakpoint #%d?\n", b->number); | |
465 | ||
466 | /* memory breakpoint? */ | |
999dd04b JL |
467 | if (b->type == bp_watchpoint |
468 | || b->type == bp_hardware_watchpoint | |
11054881 | 469 | || b->type == bp_read_watchpoint |
65b07ddc | 470 | || b->type == bp_access_watchpoint) |
31ef19fc | 471 | continue; |
65b07ddc DT |
472 | /* bp in memory? */ |
473 | if (!b->inserted) | |
31ef19fc | 474 | continue; |
65b07ddc DT |
475 | /* Addresses and length of the part of the breakpoint that |
476 | we need to copy. */ | |
477 | /* XXXX The m68k, sh and h8300 have different local and remote | |
478 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
479 | correctly determine the breakpoints memory address and size | |
480 | for these targets. */ | |
481 | bp_addr = b->address; | |
482 | bp_size = 0; | |
483 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
484 | continue; | |
485 | if (bp_size == 0) | |
486 | /* bp isn't valid */ | |
487 | continue; | |
488 | if (bp_addr + bp_size <= memaddr) | |
489 | /* The breakpoint is entirely before the chunk of memory we | |
31ef19fc JK |
490 | are reading. */ |
491 | continue; | |
65b07ddc DT |
492 | if (bp_addr >= memaddr + len) |
493 | /* The breakpoint is entirely after the chunk of memory we are | |
494 | reading. */ | |
495 | continue; | |
496 | /* Copy the breakpoint from the shadow contents, and recurse for | |
497 | the things before and after. */ | |
498 | { | |
499 | /* Offset within shadow_contents. */ | |
500 | int bptoffset = 0; | |
31ef19fc | 501 | |
65b07ddc DT |
502 | if (bp_addr < memaddr) |
503 | { | |
504 | /* Only copy the second part of the breakpoint. */ | |
505 | bp_size -= memaddr - bp_addr; | |
506 | bptoffset = memaddr - bp_addr; | |
507 | bp_addr = memaddr; | |
508 | } | |
509 | ||
510 | if (bp_addr + bp_size > memaddr + len) | |
511 | { | |
512 | /* Only copy the first part of the breakpoint. */ | |
513 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
514 | } | |
515 | ||
516 | memcpy (myaddr + bp_addr - memaddr, | |
517 | b->shadow_contents + bptoffset, bp_size); | |
518 | ||
519 | if (bp_addr > memaddr) | |
520 | { | |
521 | /* Copy the section of memory before the breakpoint. */ | |
522 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
523 | if (status != 0) | |
524 | return status; | |
525 | } | |
526 | ||
527 | if (bp_addr + bp_size < memaddr + len) | |
528 | { | |
529 | /* Copy the section of memory after the breakpoint. */ | |
530 | status = read_memory_nobpt | |
531 | (bp_addr + bp_size, | |
532 | myaddr + bp_addr + bp_size - memaddr, | |
533 | memaddr + len - (bp_addr + bp_size)); | |
534 | if (status != 0) | |
535 | return status; | |
536 | } | |
537 | return 0; | |
538 | } | |
31ef19fc JK |
539 | } |
540 | /* Nothing overlaps. Just call read_memory_noerr. */ | |
541 | return target_read_memory (memaddr, myaddr, len); | |
542 | } | |
65b07ddc | 543 | |
31ef19fc | 544 | \f |
bd5635a1 RP |
545 | /* insert_breakpoints is used when starting or continuing the program. |
546 | remove_breakpoints is used when the program stops. | |
547 | Both return zero if successful, | |
548 | or an `errno' value if could not write the inferior. */ | |
549 | ||
550 | int | |
551 | insert_breakpoints () | |
552 | { | |
fa3764e2 | 553 | register struct breakpoint *b, *temp; |
bd5635a1 RP |
554 | int val = 0; |
555 | int disabled_breaks = 0; | |
556 | ||
65b07ddc DT |
557 | static char message1[] = "Error inserting catchpoint %d:\n"; |
558 | static char message[sizeof (message1) + 30]; | |
559 | ||
560 | ||
fa3764e2 | 561 | ALL_BREAKPOINTS_SAFE (b, temp) |
65b07ddc DT |
562 | { |
563 | if (b->type != bp_watchpoint | |
564 | && b->type != bp_hardware_watchpoint | |
565 | && b->type != bp_read_watchpoint | |
566 | && b->type != bp_access_watchpoint | |
567 | && b->type != bp_catch_fork | |
568 | && b->type != bp_catch_vfork | |
569 | && b->type != bp_catch_exec | |
570 | && b->type != bp_catch_throw | |
571 | && b->type != bp_catch_catch | |
572 | && b->enable != disabled | |
573 | && b->enable != shlib_disabled | |
574 | && b->enable != call_disabled | |
575 | && ! b->inserted | |
576 | && ! b->duplicate) | |
577 | { | |
578 | if (b->type == bp_hardware_breakpoint) | |
579 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
580 | else | |
581 | { | |
582 | /* Check to see if breakpoint is in an overlay section; | |
583 | if so, we should set the breakpoint at the LMA address. | |
584 | Only if the section is currently mapped should we ALSO | |
585 | set a break at the VMA address. */ | |
586 | if (overlay_debugging && b->section && | |
587 | section_is_overlay (b->section)) | |
588 | { | |
589 | CORE_ADDR addr; | |
590 | ||
591 | addr = overlay_unmapped_address (b->address, b->section); | |
592 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
593 | /* This would be the time to check val, to see if the | |
594 | breakpoint write to the load address succeeded. | |
595 | However, this might be an ordinary occurrance, eg. if | |
596 | the unmapped overlay is in ROM. */ | |
597 | val = 0; /* in case unmapped address failed */ | |
598 | if (section_is_mapped (b->section)) | |
599 | val = target_insert_breakpoint (b->address, | |
600 | b->shadow_contents); | |
601 | } | |
602 | else /* ordinary (non-overlay) address */ | |
603 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
604 | } | |
605 | if (val) | |
606 | { | |
607 | /* Can't set the breakpoint. */ | |
bd5635a1 | 608 | #if defined (DISABLE_UNSETTABLE_BREAK) |
65b07ddc DT |
609 | if (DISABLE_UNSETTABLE_BREAK (b->address)) |
610 | { | |
611 | /* See also: disable_breakpoints_in_shlibs. */ | |
612 | val = 0; | |
613 | b->enable = shlib_disabled; | |
614 | if (!disabled_breaks) | |
615 | { | |
616 | target_terminal_ours_for_output (); | |
617 | fprintf_unfiltered (gdb_stderr, | |
618 | "Cannot insert breakpoint %d:\n", b->number); | |
619 | printf_filtered ("Temporarily disabling shared library breakpoints:\n"); | |
620 | } | |
621 | disabled_breaks = 1; | |
622 | printf_filtered ("%d ", b->number); | |
623 | } | |
624 | else | |
bd5635a1 | 625 | #endif |
65b07ddc DT |
626 | { |
627 | target_terminal_ours_for_output (); | |
628 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); | |
d3b9c0df | 629 | #ifdef ONE_PROCESS_WRITETEXT |
65b07ddc DT |
630 | fprintf_unfiltered (gdb_stderr, |
631 | "The same program may be running in another process.\n"); | |
d3b9c0df | 632 | #endif |
65b07ddc DT |
633 | memory_error (val, b->address); /* which bombs us out */ |
634 | } | |
635 | } | |
636 | else | |
637 | b->inserted = 1; | |
638 | } | |
639 | else if (ep_is_exception_catchpoint (b) | |
640 | && b->enable != disabled | |
641 | && b->enable != shlib_disabled | |
642 | && b->enable != call_disabled | |
643 | && ! b->inserted | |
644 | && ! b->duplicate) | |
645 | ||
999dd04b | 646 | { |
65b07ddc DT |
647 | /* If we get here, we must have a callback mechanism for exception |
648 | events -- with g++ style embedded label support, we insert | |
649 | ordinary breakpoints and not catchpoints. */ | |
650 | struct symtab_and_line * sal; | |
651 | args_for_catchpoint_enable args; | |
652 | sprintf (message, message1, b->number); /* Format possible error message */ | |
653 | ||
654 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
655 | if (val) | |
656 | { | |
657 | /* Couldn't set breakpoint for some reason */ | |
658 | target_terminal_ours_for_output (); | |
659 | fprintf_unfiltered (gdb_stderr, | |
660 | "Cannot insert catchpoint %d; disabling it\n", b->number); | |
661 | b->enable = disabled; | |
662 | } | |
663 | else | |
664 | { | |
665 | /* Bp set, now make sure callbacks are enabled */ | |
666 | args.kind = b->type == bp_catch_catch ? EX_EVENT_CATCH : EX_EVENT_THROW; | |
667 | args.enable = 1; | |
320d5bd8 DT |
668 | sal = (struct symtab_and_line *) |
669 | catch_errors ((int (*) PARAMS ((char *))) | |
670 | cover_target_enable_exception_callback, | |
671 | (char *) &args, | |
672 | message, RETURN_MASK_ALL); | |
65b07ddc DT |
673 | if (sal && (sal != (struct symtab_and_line *) -1)) |
674 | { | |
675 | b->inserted = 1; | |
676 | } | |
677 | /* Check if something went wrong; sal == 0 can be ignored */ | |
678 | if (sal == (struct symtab_and_line *) -1) | |
679 | { | |
680 | /* something went wrong */ | |
681 | target_terminal_ours_for_output (); | |
682 | fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d; disabling it\n", b->number); | |
683 | b->enable = disabled; | |
684 | } | |
685 | } | |
686 | } | |
687 | ||
688 | else if ((b->type == bp_hardware_watchpoint || | |
689 | b->type == bp_read_watchpoint || | |
690 | b->type == bp_access_watchpoint) | |
691 | && b->enable == enabled | |
692 | && ! b->inserted | |
693 | && ! b->duplicate) | |
694 | { | |
695 | struct frame_info *saved_frame; | |
696 | int saved_level, within_current_scope; | |
697 | value_ptr mark = value_mark (); | |
698 | value_ptr v; | |
699 | ||
700 | /* Save the current frame and level so we can restore it after | |
701 | evaluating the watchpoint expression on its own frame. */ | |
702 | saved_frame = selected_frame; | |
703 | saved_level = selected_frame_level; | |
704 | ||
705 | /* Determine if the watchpoint is within scope. */ | |
706 | if (b->exp_valid_block == NULL) | |
707 | within_current_scope = 1; | |
708 | else | |
709 | { | |
710 | struct frame_info *fi; | |
711 | ||
712 | /* There might be no current frame at this moment if we are | |
713 | resuming from a step over a breakpoint. | |
714 | Set up current frame before trying to find the watchpoint | |
715 | frame. */ | |
716 | get_current_frame (); | |
717 | fi = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
718 | within_current_scope = (fi != NULL); | |
719 | if (within_current_scope) | |
720 | select_frame (fi, -1); | |
721 | } | |
999dd04b | 722 | |
65b07ddc DT |
723 | if (within_current_scope) |
724 | { | |
725 | /* Evaluate the expression and cut the chain of values | |
726 | produced off from the value chain. */ | |
727 | v = evaluate_expression (b->exp); | |
728 | value_release_to_mark (mark); | |
999dd04b | 729 | |
65b07ddc DT |
730 | b->val_chain = v; |
731 | b->inserted = 1; | |
999dd04b | 732 | |
65b07ddc DT |
733 | /* Look at each value on the value chain. */ |
734 | for ( ; v; v=v->next) | |
735 | { | |
736 | /* If it's a memory location, then we must watch it. */ | |
737 | if (v->lval == lval_memory) | |
738 | { | |
739 | int addr, len, type; | |
999dd04b | 740 | |
65b07ddc DT |
741 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); |
742 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
743 | type = 0; | |
744 | if (b->type == bp_read_watchpoint) | |
745 | type = 1; | |
746 | else if (b->type == bp_access_watchpoint) | |
747 | type = 2; | |
748 | ||
749 | val = target_insert_watchpoint (addr, len, type); | |
750 | if (val == -1) | |
751 | { | |
752 | b->inserted = 0; | |
753 | break; | |
754 | } | |
755 | val = 0; | |
756 | } | |
757 | } | |
758 | /* Failure to insert a watchpoint on any memory value in the | |
759 | value chain brings us here. */ | |
760 | if (!b->inserted) | |
761 | warning ("Hardware watchpoint %d: Could not insert watchpoint\n", | |
762 | b->number); | |
763 | } | |
764 | else | |
765 | { | |
766 | printf_filtered ("\ | |
999dd04b JL |
767 | Hardware watchpoint %d deleted because the program has left the block in\n\ |
768 | which its expression is valid.\n", b->number); | |
65b07ddc DT |
769 | if (b->related_breakpoint) |
770 | b->related_breakpoint->disposition = del_at_next_stop; | |
771 | b->disposition = del_at_next_stop; | |
772 | } | |
999dd04b | 773 | |
65b07ddc DT |
774 | /* Restore the frame and level. */ |
775 | if ((saved_frame != selected_frame) || | |
776 | (saved_level != selected_frame_level)) | |
777 | select_and_print_frame (saved_frame, saved_level); | |
778 | } | |
779 | else if ((b->type == bp_catch_fork | |
780 | || b->type == bp_catch_vfork | |
781 | || b->type == bp_catch_exec) | |
782 | && b->enable == enabled | |
783 | && ! b->inserted | |
784 | && ! b->duplicate) | |
785 | { | |
786 | val = -1; | |
787 | switch (b->type) | |
788 | { | |
789 | case bp_catch_fork : | |
790 | val = target_insert_fork_catchpoint (inferior_pid); | |
791 | break; | |
792 | case bp_catch_vfork : | |
793 | val = target_insert_vfork_catchpoint (inferior_pid); | |
794 | break; | |
795 | case bp_catch_exec : | |
796 | val = target_insert_exec_catchpoint (inferior_pid); | |
797 | break; | |
798 | } | |
799 | if (val < 0) | |
800 | { | |
801 | target_terminal_ours_for_output (); | |
802 | fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d:\n", b->number); | |
803 | } | |
804 | else | |
805 | b->inserted = 1; | |
806 | } | |
807 | } | |
bd5635a1 RP |
808 | if (disabled_breaks) |
809 | printf_filtered ("\n"); | |
65b07ddc | 810 | |
bd5635a1 RP |
811 | return val; |
812 | } | |
813 | ||
999dd04b | 814 | |
bd5635a1 RP |
815 | int |
816 | remove_breakpoints () | |
817 | { | |
818 | register struct breakpoint *b; | |
819 | int val; | |
820 | ||
bd5635a1 | 821 | ALL_BREAKPOINTS (b) |
999dd04b JL |
822 | { |
823 | if (b->inserted) | |
824 | { | |
65b07ddc | 825 | val = remove_breakpoint (b, mark_uninserted); |
999dd04b JL |
826 | if (val != 0) |
827 | return val; | |
828 | } | |
829 | } | |
830 | return 0; | |
831 | } | |
bd5635a1 | 832 | |
65b07ddc DT |
833 | int |
834 | reattach_breakpoints (pid) | |
835 | int pid; | |
836 | { | |
837 | register struct breakpoint *b; | |
838 | int val; | |
839 | int saved_inferior_pid = inferior_pid; | |
840 | ||
841 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
842 | ALL_BREAKPOINTS (b) | |
843 | { | |
844 | if (b->inserted) | |
845 | { | |
846 | remove_breakpoint (b, mark_inserted); | |
847 | if (b->type == bp_hardware_breakpoint) | |
848 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
849 | else | |
850 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
851 | if (val != 0) | |
852 | { | |
853 | inferior_pid = saved_inferior_pid; | |
854 | return val; | |
855 | } | |
856 | } | |
857 | } | |
858 | inferior_pid = saved_inferior_pid; | |
859 | return 0; | |
860 | } | |
861 | ||
862 | void | |
863 | update_breakpoints_after_exec () | |
864 | { | |
865 | struct breakpoint * b; | |
866 | struct breakpoint * temp; | |
867 | ||
868 | /* Doing this first prevents the badness of having delete_breakpoint() | |
869 | write a breakpoint's current "shadow contents" to lift the bp. That | |
870 | shadow is NOT valid after an exec()! */ | |
871 | mark_breakpoints_out (); | |
872 | ||
873 | ALL_BREAKPOINTS_SAFE (b, temp) | |
874 | { | |
875 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
876 | if (b->type == bp_shlib_event) | |
877 | { | |
878 | delete_breakpoint (b); | |
879 | continue; | |
880 | } | |
881 | ||
882 | /* Step-resume breakpoints are meaningless after an exec(). */ | |
883 | if (b->type == bp_step_resume) | |
884 | { | |
885 | delete_breakpoint (b); | |
886 | continue; | |
887 | } | |
888 | ||
889 | /* Ditto the sigtramp handler breakpoints. */ | |
890 | if (b->type == bp_through_sigtramp) | |
891 | { | |
892 | delete_breakpoint (b); | |
893 | continue; | |
894 | } | |
895 | ||
896 | /* Ditto the exception-handling catchpoints. */ | |
897 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
898 | { | |
899 | delete_breakpoint (b); | |
900 | continue; | |
901 | } | |
902 | ||
903 | /* Don't delete an exec catchpoint, because else the inferior | |
904 | won't stop when it ought! | |
905 | ||
906 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
907 | on this target, we may not be able to stop when the vfork is seen, | |
908 | but only when the subsequent exec is seen. (And because deleting | |
909 | fork catchpoints here but not vfork catchpoints will seem mysterious | |
910 | to users, keep those too.) | |
911 | ||
912 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
913 | target address field, if any, is sufficient to have it be reset | |
914 | automagically. Certainly on HP-UX that's true. */ | |
915 | if ((b->type == bp_catch_exec) || | |
916 | (b->type == bp_catch_vfork) || | |
917 | (b->type == bp_catch_fork)) | |
918 | { | |
677f415c | 919 | b->address = (CORE_ADDR) NULL; |
65b07ddc DT |
920 | continue; |
921 | } | |
922 | ||
923 | /* bp_finish is a special case. The only way we ought to be able | |
924 | to see one of these when an exec() has happened, is if the user | |
925 | caught a vfork, and then said "finish". Ordinarily a finish just | |
926 | carries them to the call-site of the current callee, by setting | |
927 | a temporary bp there and resuming. But in this case, the finish | |
928 | will carry them entirely through the vfork & exec. | |
929 | ||
930 | We don't want to allow a bp_finish to remain inserted now. But | |
931 | we can't safely delete it, 'cause finish_command has a handle to | |
932 | the bp on a bpstat, and will later want to delete it. There's a | |
933 | chance (and I've seen it happen) that if we delete the bp_finish | |
934 | here, that its storage will get reused by the time finish_command | |
935 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
936 | We really must allow finish_command to delete a bp_finish. | |
937 | ||
938 | In the absense of a general solution for the "how do we know it's | |
939 | safe to delete something others may have handles to?" problem, what | |
940 | we'll do here is just uninsert the bp_finish, and let finish_command | |
941 | delete it. | |
942 | ||
943 | (We know the bp_finish is "doomed" in the sense that it's momentary, | |
944 | and will be deleted as soon as finish_command sees the inferior stopped. | |
945 | So it doesn't matter that the bp's address is probably bogus in the | |
946 | new a.out, unlike e.g., the solib breakpoints.) */ | |
947 | if (b->type == bp_finish) | |
948 | { | |
949 | continue; | |
950 | } | |
951 | ||
952 | /* Without a symbolic address, we have little hope of the | |
953 | pre-exec() address meaning the same thing in the post-exec() | |
954 | a.out. */ | |
955 | if (b->addr_string == NULL) | |
956 | { | |
957 | delete_breakpoint (b); | |
958 | continue; | |
959 | } | |
960 | ||
961 | /* If this breakpoint has survived the above battery of checks, then | |
962 | it must have a symbolic address. Be sure that it gets reevaluated | |
963 | to a target address, rather than reusing the old evaluation. */ | |
677f415c | 964 | b->address = (CORE_ADDR) NULL; |
65b07ddc DT |
965 | } |
966 | } | |
967 | ||
968 | int | |
969 | detach_breakpoints (pid) | |
970 | int pid; | |
971 | { | |
972 | register struct breakpoint *b; | |
973 | int val; | |
974 | int saved_inferior_pid = inferior_pid; | |
975 | ||
976 | if (pid == inferior_pid) | |
977 | error ("Cannot detach breakpoints of inferior_pid"); | |
978 | ||
979 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
980 | ALL_BREAKPOINTS (b) | |
981 | { | |
982 | if (b->inserted) | |
983 | { | |
984 | val = remove_breakpoint (b, mark_inserted); | |
985 | if (val != 0) | |
986 | { | |
987 | inferior_pid = saved_inferior_pid; | |
988 | return val; | |
989 | } | |
990 | } | |
991 | } | |
992 | inferior_pid = saved_inferior_pid; | |
993 | return 0; | |
994 | } | |
999dd04b JL |
995 | |
996 | static int | |
65b07ddc | 997 | remove_breakpoint (b, is) |
999dd04b | 998 | struct breakpoint *b; |
65b07ddc | 999 | insertion_state_t is; |
999dd04b JL |
1000 | { |
1001 | int val; | |
1002 | ||
65b07ddc DT |
1003 | if (b->type == bp_none) |
1004 | warning ("attempted to remove apparently deleted breakpoint #%d?\n", b->number); | |
1005 | ||
999dd04b | 1006 | if (b->type != bp_watchpoint |
11054881 KH |
1007 | && b->type != bp_hardware_watchpoint |
1008 | && b->type != bp_read_watchpoint | |
65b07ddc DT |
1009 | && b->type != bp_access_watchpoint |
1010 | && b->type != bp_catch_fork | |
1011 | && b->type != bp_catch_vfork | |
1012 | && b->type != bp_catch_exec | |
1013 | && b->type != bp_catch_catch | |
1014 | && b->type != bp_catch_throw) | |
1015 | ||
999dd04b | 1016 | { |
11054881 KH |
1017 | if (b->type == bp_hardware_breakpoint) |
1018 | val = target_remove_hw_breakpoint(b->address, b->shadow_contents); | |
1019 | else | |
6b038bd9 DT |
1020 | { |
1021 | /* Check to see if breakpoint is in an overlay section; | |
1022 | if so, we should remove the breakpoint at the LMA address. | |
1023 | If that is not equal to the raw address, then we should | |
1024 | presumable remove the breakpoint there as well. */ | |
1025 | if (overlay_debugging && b->section && | |
1026 | section_is_overlay (b->section)) | |
1027 | { | |
1028 | CORE_ADDR addr; | |
1029 | ||
1030 | addr = overlay_unmapped_address (b->address, b->section); | |
1031 | val = target_remove_breakpoint (addr, b->shadow_contents); | |
1032 | /* This would be the time to check val, to see if the | |
1033 | shadow breakpoint write to the load address succeeded. | |
1034 | However, this might be an ordinary occurrance, eg. if | |
1035 | the unmapped overlay is in ROM. */ | |
1036 | val = 0; /* in case unmapped address failed */ | |
1037 | if (section_is_mapped (b->section)) | |
1038 | val = target_remove_breakpoint (b->address, | |
1039 | b->shadow_contents); | |
1040 | } | |
1041 | else /* ordinary (non-overlay) address */ | |
1042 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
1043 | } | |
999dd04b JL |
1044 | if (val) |
1045 | return val; | |
65b07ddc | 1046 | b->inserted = (is == mark_inserted); |
999dd04b | 1047 | } |
11054881 KH |
1048 | else if ((b->type == bp_hardware_watchpoint || |
1049 | b->type == bp_read_watchpoint || | |
1050 | b->type == bp_access_watchpoint) | |
999dd04b JL |
1051 | && b->enable == enabled |
1052 | && ! b->duplicate) | |
1053 | { | |
1054 | value_ptr v, n; | |
1055 | ||
65b07ddc | 1056 | b->inserted = (is == mark_inserted); |
999dd04b JL |
1057 | /* Walk down the saved value chain. */ |
1058 | for (v = b->val_chain; v; v = v->next) | |
1059 | { | |
1060 | /* For each memory reference remove the watchpoint | |
1061 | at that address. */ | |
1062 | if (v->lval == lval_memory) | |
1063 | { | |
6b038bd9 | 1064 | int addr, len, type; |
999dd04b JL |
1065 | |
1066 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1067 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
6b038bd9 DT |
1068 | type = 0; |
1069 | if (b->type == bp_read_watchpoint) | |
1070 | type = 1; | |
1071 | else if (b->type == bp_access_watchpoint) | |
1072 | type = 2; | |
1073 | ||
1074 | val = target_remove_watchpoint (addr, len, type); | |
999dd04b JL |
1075 | if (val == -1) |
1076 | b->inserted = 1; | |
1077 | val = 0; | |
1078 | } | |
1079 | } | |
1080 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
65b07ddc | 1081 | if ((is == mark_uninserted) && (b->inserted)) |
0fe1522a SG |
1082 | warning ("Hardware watchpoint %d: Could not remove watchpoint\n", |
1083 | b->number); | |
999dd04b JL |
1084 | |
1085 | /* Free the saved value chain. We will construct a new one | |
1086 | the next time the watchpoint is inserted. */ | |
1087 | for (v = b->val_chain; v; v = n) | |
1088 | { | |
1089 | n = v->next; | |
1090 | value_free (v); | |
1091 | } | |
1092 | b->val_chain = NULL; | |
1093 | } | |
65b07ddc DT |
1094 | else if ((b->type == bp_catch_fork || |
1095 | b->type == bp_catch_vfork || | |
1096 | b->type == bp_catch_exec) | |
1097 | && b->enable == enabled | |
1098 | && ! b->duplicate) | |
1099 | { | |
1100 | val = -1; | |
1101 | switch (b->type) | |
1102 | { | |
1103 | case bp_catch_fork: | |
1104 | val = target_remove_fork_catchpoint (inferior_pid); | |
1105 | break; | |
1106 | case bp_catch_vfork : | |
1107 | val = target_remove_vfork_catchpoint (inferior_pid); | |
1108 | break; | |
1109 | case bp_catch_exec : | |
1110 | val = target_remove_exec_catchpoint (inferior_pid); | |
1111 | break; | |
1112 | } | |
1113 | if (val) | |
1114 | return val; | |
1115 | b->inserted = (is == mark_inserted); | |
1116 | } | |
1117 | else if ((b->type == bp_catch_catch || | |
1118 | b->type == bp_catch_throw) | |
1119 | && b->enable == enabled | |
1120 | && ! b->duplicate) | |
1121 | { | |
1122 | ||
1123 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
1124 | if (val) | |
1125 | return val; | |
1126 | b->inserted = (is == mark_inserted); | |
1127 | } | |
1128 | else if (ep_is_exception_catchpoint (b) | |
1129 | && b->inserted /* sometimes previous insert doesn't happen */ | |
1130 | && b->enable == enabled | |
1131 | && ! b->duplicate) | |
1132 | { | |
1133 | ||
1134 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
1135 | if (val) | |
1136 | return val; | |
1137 | ||
1138 | b->inserted = (is == mark_inserted); | |
1139 | } | |
1140 | ||
bd5635a1 RP |
1141 | return 0; |
1142 | } | |
1143 | ||
cf3e377e | 1144 | /* Clear the "inserted" flag in all breakpoints. */ |
bd5635a1 RP |
1145 | |
1146 | void | |
1147 | mark_breakpoints_out () | |
1148 | { | |
1149 | register struct breakpoint *b; | |
1150 | ||
1151 | ALL_BREAKPOINTS (b) | |
1152 | b->inserted = 0; | |
1153 | } | |
1154 | ||
cf3e377e | 1155 | /* Clear the "inserted" flag in all breakpoints and delete any breakpoints |
65b07ddc DT |
1156 | which should go away between runs of the program. |
1157 | ||
1158 | Plus other such housekeeping that has to be done for breakpoints | |
1159 | between runs. | |
1160 | ||
1161 | Note: this function gets called at the end of a run (by generic_mourn_inferior) | |
1162 | and when a run begins (by init_wait_for_inferior). */ | |
1163 | ||
1164 | ||
cf3e377e JK |
1165 | |
1166 | void | |
65b07ddc DT |
1167 | breakpoint_init_inferior (context) |
1168 | enum inf_context context; | |
cf3e377e JK |
1169 | { |
1170 | register struct breakpoint *b, *temp; | |
65b07ddc | 1171 | static int warning_needed = 0; |
cf3e377e JK |
1172 | |
1173 | ALL_BREAKPOINTS_SAFE (b, temp) | |
1174 | { | |
1175 | b->inserted = 0; | |
1176 | ||
e51481f9 JL |
1177 | switch (b->type) |
1178 | { | |
1179 | case bp_call_dummy: | |
1180 | case bp_watchpoint_scope: | |
999dd04b | 1181 | |
e51481f9 JL |
1182 | /* If the call dummy breakpoint is at the entry point it will |
1183 | cause problems when the inferior is rerun, so we better | |
1184 | get rid of it. | |
999dd04b | 1185 | |
e51481f9 JL |
1186 | Also get rid of scope breakpoints. */ |
1187 | delete_breakpoint (b); | |
1188 | break; | |
1189 | ||
1190 | case bp_watchpoint: | |
1191 | case bp_hardware_watchpoint: | |
1192 | case bp_read_watchpoint: | |
1193 | case bp_access_watchpoint: | |
1194 | ||
1195 | /* Likewise for watchpoints on local expressions. */ | |
1196 | if (b->exp_valid_block != NULL) | |
1197 | delete_breakpoint (b); | |
1198 | break; | |
e51481f9 | 1199 | default: |
65b07ddc DT |
1200 | /* Likewise for exception catchpoints in dynamic-linked |
1201 | executables where required */ | |
1202 | if (ep_is_exception_catchpoint (b) && | |
1203 | exception_catchpoints_are_fragile) | |
1204 | { | |
1205 | warning_needed = 1; | |
1206 | delete_breakpoint (b); | |
1207 | } | |
1208 | break; | |
e51481f9 | 1209 | } |
cf3e377e | 1210 | } |
65b07ddc DT |
1211 | |
1212 | if (exception_catchpoints_are_fragile) | |
1213 | exception_support_initialized = 0; | |
1214 | ||
1215 | /* Don't issue the warning unless it's really needed... */ | |
1216 | if (warning_needed && (context != inf_exited)) | |
1217 | { | |
1218 | warning ("Exception catchpoints from last run were deleted, you must reinsert them explicitly"); | |
1219 | warning_needed = 0; | |
1220 | } | |
cf3e377e JK |
1221 | } |
1222 | ||
bd5635a1 RP |
1223 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. |
1224 | When continuing from a location with a breakpoint, | |
1225 | we actually single step once before calling insert_breakpoints. */ | |
1226 | ||
1227 | int | |
1228 | breakpoint_here_p (pc) | |
1229 | CORE_ADDR pc; | |
1230 | { | |
1231 | register struct breakpoint *b; | |
1232 | ||
1233 | ALL_BREAKPOINTS (b) | |
6b038bd9 | 1234 | if (b->enable == enabled |
65b07ddc DT |
1235 | && b->enable != shlib_disabled |
1236 | && b->enable != call_disabled | |
6b038bd9 | 1237 | && b->address == pc) /* bp is enabled and matches pc */ |
ad3b8c4a JM |
1238 | { |
1239 | if (overlay_debugging && | |
1240 | section_is_overlay (b->section) && | |
1241 | !section_is_mapped (b->section)) | |
1242 | continue; /* unmapped overlay -- can't be a match */ | |
1243 | else | |
1244 | return 1; | |
1245 | } | |
6b038bd9 DT |
1246 | |
1247 | return 0; | |
1248 | } | |
1249 | ||
1250 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), but it | |
1251 | only returns true if there is actually a breakpoint inserted at PC. */ | |
1252 | ||
1253 | int | |
1254 | breakpoint_inserted_here_p (pc) | |
1255 | CORE_ADDR pc; | |
1256 | { | |
1257 | register struct breakpoint *b; | |
1258 | ||
1259 | ALL_BREAKPOINTS (b) | |
1260 | if (b->inserted | |
1261 | && b->address == pc) /* bp is inserted and matches pc */ | |
ad3b8c4a JM |
1262 | { |
1263 | if (overlay_debugging && | |
1264 | section_is_overlay (b->section) && | |
1265 | !section_is_mapped (b->section)) | |
1266 | continue; /* unmapped overlay -- can't be a match */ | |
1267 | else | |
1268 | return 1; | |
1269 | } | |
bd5635a1 RP |
1270 | |
1271 | return 0; | |
1272 | } | |
199b2450 | 1273 | |
05052b63 JK |
1274 | /* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY |
1275 | because figuring out the saved SP would take too much time, at least using | |
1276 | get_saved_register on the 68k. This means that for this function to | |
1277 | work right a port must use the bp_call_dummy breakpoint. */ | |
1278 | ||
1279 | int | |
1280 | frame_in_dummy (frame) | |
706dc3ce | 1281 | struct frame_info *frame; |
05052b63 | 1282 | { |
6b038bd9 DT |
1283 | #ifdef CALL_DUMMY |
1284 | #ifdef USE_GENERIC_DUMMY_FRAMES | |
1285 | return generic_pc_in_call_dummy (frame->pc, frame->frame); | |
1286 | #else | |
05052b63 JK |
1287 | struct breakpoint *b; |
1288 | ||
1289 | ALL_BREAKPOINTS (b) | |
1290 | { | |
6b038bd9 | 1291 | static ULONGEST dummy[] = CALL_DUMMY; |
d7e7e851 | 1292 | |
05052b63 | 1293 | if (b->type == bp_call_dummy |
d7e7e851 JK |
1294 | && b->frame == frame->frame |
1295 | ||
1296 | /* We need to check the PC as well as the frame on the sparc, | |
1297 | for signals.exp in the testsuite. */ | |
1298 | && (frame->pc | |
1299 | >= (b->address | |
1300 | - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE)) | |
1301 | && frame->pc <= b->address) | |
05052b63 JK |
1302 | return 1; |
1303 | } | |
6b038bd9 | 1304 | #endif /* GENERIC_DUMMY_FRAMES */ |
d7e7e851 | 1305 | #endif /* CALL_DUMMY */ |
05052b63 JK |
1306 | return 0; |
1307 | } | |
1308 | ||
199b2450 TL |
1309 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC |
1310 | is valid for process/thread PID. */ | |
1311 | ||
1312 | int | |
1313 | breakpoint_thread_match (pc, pid) | |
1314 | CORE_ADDR pc; | |
1315 | int pid; | |
1316 | { | |
1317 | struct breakpoint *b; | |
1318 | int thread; | |
1319 | ||
1320 | thread = pid_to_thread_id (pid); | |
1321 | ||
1322 | ALL_BREAKPOINTS (b) | |
1323 | if (b->enable != disabled | |
fa3764e2 | 1324 | && b->enable != shlib_disabled |
65b07ddc | 1325 | && b->enable != call_disabled |
199b2450 TL |
1326 | && b->address == pc |
1327 | && (b->thread == -1 || b->thread == thread)) | |
ad3b8c4a JM |
1328 | { |
1329 | if (overlay_debugging && | |
1330 | section_is_overlay (b->section) && | |
1331 | !section_is_mapped (b->section)) | |
1332 | continue; /* unmapped overlay -- can't be a match */ | |
1333 | else | |
1334 | return 1; | |
1335 | } | |
199b2450 TL |
1336 | |
1337 | return 0; | |
1338 | } | |
1339 | ||
bd5635a1 RP |
1340 | \f |
1341 | /* bpstat stuff. External routines' interfaces are documented | |
1342 | in breakpoint.h. */ | |
30875e1c | 1343 | |
65b07ddc DT |
1344 | int |
1345 | ep_is_catchpoint (ep) | |
1346 | struct breakpoint * ep; | |
1347 | { | |
1348 | return | |
1349 | (ep->type == bp_catch_load) | |
1350 | || (ep->type == bp_catch_unload) | |
1351 | || (ep->type == bp_catch_fork) | |
1352 | || (ep->type == bp_catch_vfork) | |
1353 | || (ep->type == bp_catch_exec) | |
1354 | || (ep->type == bp_catch_catch) | |
1355 | || (ep->type == bp_catch_throw) | |
1356 | ||
1357 | ||
1358 | /* ??rehrauer: Add more kinds here, as are implemented... */ | |
1359 | ; | |
1360 | } | |
1361 | ||
1362 | int | |
1363 | ep_is_shlib_catchpoint (ep) | |
1364 | struct breakpoint * ep; | |
1365 | { | |
1366 | return | |
1367 | (ep->type == bp_catch_load) | |
1368 | || (ep->type == bp_catch_unload) | |
1369 | ; | |
1370 | } | |
1371 | ||
1372 | int | |
1373 | ep_is_exception_catchpoint (ep) | |
1374 | struct breakpoint * ep; | |
1375 | { | |
1376 | return | |
1377 | (ep->type == bp_catch_catch) | |
1378 | || (ep->type == bp_catch_throw) | |
1379 | ; | |
1380 | } | |
1381 | ||
30875e1c SG |
1382 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1383 | Also free any storage that is part of a bpstat. */ | |
1384 | ||
bd5635a1 RP |
1385 | void |
1386 | bpstat_clear (bsp) | |
1387 | bpstat *bsp; | |
1388 | { | |
1389 | bpstat p; | |
1390 | bpstat q; | |
1391 | ||
1392 | if (bsp == 0) | |
1393 | return; | |
1394 | p = *bsp; | |
1395 | while (p != NULL) | |
1396 | { | |
1397 | q = p->next; | |
1398 | if (p->old_val != NULL) | |
1399 | value_free (p->old_val); | |
c8950965 | 1400 | free ((PTR)p); |
bd5635a1 RP |
1401 | p = q; |
1402 | } | |
1403 | *bsp = NULL; | |
1404 | } | |
1405 | ||
30875e1c SG |
1406 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
1407 | is part of the bpstat is copied as well. */ | |
1408 | ||
bd5635a1 RP |
1409 | bpstat |
1410 | bpstat_copy (bs) | |
1411 | bpstat bs; | |
1412 | { | |
1413 | bpstat p = NULL; | |
1414 | bpstat tmp; | |
fee933f1 | 1415 | bpstat retval = NULL; |
bd5635a1 RP |
1416 | |
1417 | if (bs == NULL) | |
1418 | return bs; | |
1419 | ||
1420 | for (; bs != NULL; bs = bs->next) | |
1421 | { | |
1422 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4ed3a9ea | 1423 | memcpy (tmp, bs, sizeof (*tmp)); |
bd5635a1 RP |
1424 | if (p == NULL) |
1425 | /* This is the first thing in the chain. */ | |
1426 | retval = tmp; | |
1427 | else | |
1428 | p->next = tmp; | |
1429 | p = tmp; | |
1430 | } | |
1431 | p->next = NULL; | |
1432 | return retval; | |
1433 | } | |
1434 | ||
30875e1c SG |
1435 | /* Find the bpstat associated with this breakpoint */ |
1436 | ||
1437 | bpstat | |
1438 | bpstat_find_breakpoint(bsp, breakpoint) | |
1439 | bpstat bsp; | |
1440 | struct breakpoint *breakpoint; | |
1441 | { | |
1442 | if (bsp == NULL) return NULL; | |
1443 | ||
1444 | for (;bsp != NULL; bsp = bsp->next) { | |
1445 | if (bsp->breakpoint_at == breakpoint) return bsp; | |
1446 | } | |
1447 | return NULL; | |
1448 | } | |
1449 | ||
65b07ddc DT |
1450 | /* Find a step_resume breakpoint associated with this bpstat. |
1451 | (If there are multiple step_resume bp's on the list, this function | |
1452 | will arbitrarily pick one.) | |
1453 | ||
1454 | It is an error to use this function if BPSTAT doesn't contain a | |
1455 | step_resume breakpoint. | |
1456 | ||
1457 | See wait_for_inferior's use of this function. */ | |
1458 | struct breakpoint * | |
1459 | bpstat_find_step_resume_breakpoint (bsp) | |
1460 | bpstat bsp; | |
1461 | { | |
1462 | if (bsp == NULL) | |
1463 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1464 | ||
1465 | for (; bsp != NULL; bsp = bsp->next) | |
1466 | { | |
1467 | if ((bsp->breakpoint_at != NULL) && | |
1468 | (bsp->breakpoint_at->type == bp_step_resume)) | |
1469 | return bsp->breakpoint_at; | |
1470 | } | |
1471 | ||
1472 | error ("Internal error (no step_resume breakpoint found)"); | |
1473 | } | |
1474 | ||
1475 | ||
30875e1c SG |
1476 | /* Return the breakpoint number of the first breakpoint we are stopped |
1477 | at. *BSP upon return is a bpstat which points to the remaining | |
1478 | breakpoints stopped at (but which is not guaranteed to be good for | |
1479 | anything but further calls to bpstat_num). | |
1480 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1481 | ||
bd5635a1 RP |
1482 | int |
1483 | bpstat_num (bsp) | |
1484 | bpstat *bsp; | |
1485 | { | |
1486 | struct breakpoint *b; | |
1487 | ||
1488 | if ((*bsp) == NULL) | |
1489 | return 0; /* No more breakpoint values */ | |
1490 | else | |
1491 | { | |
1492 | b = (*bsp)->breakpoint_at; | |
1493 | *bsp = (*bsp)->next; | |
1494 | if (b == NULL) | |
1495 | return -1; /* breakpoint that's been deleted since */ | |
1496 | else | |
1497 | return b->number; /* We have its number */ | |
1498 | } | |
1499 | } | |
1500 | ||
30875e1c SG |
1501 | /* Modify BS so that the actions will not be performed. */ |
1502 | ||
bd5635a1 RP |
1503 | void |
1504 | bpstat_clear_actions (bs) | |
1505 | bpstat bs; | |
1506 | { | |
1507 | for (; bs != NULL; bs = bs->next) | |
1508 | { | |
1509 | bs->commands = NULL; | |
1510 | if (bs->old_val != NULL) | |
1511 | { | |
1512 | value_free (bs->old_val); | |
1513 | bs->old_val = NULL; | |
1514 | } | |
1515 | } | |
1516 | } | |
1517 | ||
bdbd5f50 JG |
1518 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
1519 | /* ARGSUSED */ | |
1520 | static void | |
1521 | cleanup_executing_breakpoints (ignore) | |
b607efe7 | 1522 | PTR ignore; |
bdbd5f50 JG |
1523 | { |
1524 | executing_breakpoint_commands = 0; | |
1525 | } | |
1526 | ||
bd5635a1 RP |
1527 | /* Execute all the commands associated with all the breakpoints at this |
1528 | location. Any of these commands could cause the process to proceed | |
1529 | beyond this point, etc. We look out for such changes by checking | |
1530 | the global "breakpoint_proceeded" after each command. */ | |
30875e1c | 1531 | |
bd5635a1 RP |
1532 | void |
1533 | bpstat_do_actions (bsp) | |
1534 | bpstat *bsp; | |
1535 | { | |
1536 | bpstat bs; | |
bdbd5f50 | 1537 | struct cleanup *old_chain; |
e8bf33c4 | 1538 | struct command_line *cmd; |
bdbd5f50 | 1539 | |
647e52ea SG |
1540 | /* Avoid endless recursion if a `source' command is contained |
1541 | in bs->commands. */ | |
1542 | if (executing_breakpoint_commands) | |
1543 | return; | |
1544 | ||
bdbd5f50 JG |
1545 | executing_breakpoint_commands = 1; |
1546 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
bd5635a1 RP |
1547 | |
1548 | top: | |
65b07ddc DT |
1549 | /* Note that (as of this writing), our callers all appear to |
1550 | be passing us the address of global stop_bpstat. And, if | |
1551 | our calls to execute_control_command cause the inferior to | |
1552 | proceed, that global (and hence, *bsp) will change. | |
1553 | ||
1554 | We must be careful to not touch *bsp unless the inferior | |
1555 | has not proceeded. */ | |
1556 | ||
1557 | /* This pointer will iterate over the list of bpstat's. */ | |
bd5635a1 RP |
1558 | bs = *bsp; |
1559 | ||
bd5635a1 RP |
1560 | breakpoint_proceeded = 0; |
1561 | for (; bs != NULL; bs = bs->next) | |
1562 | { | |
e8bf33c4 JK |
1563 | cmd = bs->commands; |
1564 | while (cmd != NULL) | |
bd5635a1 | 1565 | { |
0f8cdd9b | 1566 | execute_control_command (cmd); |
65b07ddc DT |
1567 | |
1568 | if (breakpoint_proceeded) | |
1569 | break; | |
1570 | else | |
1571 | cmd = cmd->next; | |
bd5635a1 | 1572 | } |
e8bf33c4 JK |
1573 | if (breakpoint_proceeded) |
1574 | /* The inferior is proceeded by the command; bomb out now. | |
1575 | The bpstat chain has been blown away by wait_for_inferior. | |
1576 | But since execution has stopped again, there is a new bpstat | |
1577 | to look at, so start over. */ | |
1578 | goto top; | |
1579 | else | |
1580 | bs->commands = NULL; | |
bd5635a1 | 1581 | } |
bd5635a1 RP |
1582 | |
1583 | executing_breakpoint_commands = 0; | |
bdbd5f50 | 1584 | discard_cleanups (old_chain); |
bd5635a1 RP |
1585 | } |
1586 | ||
8af68e4e JK |
1587 | /* This is the normal print_it function for a bpstat. In the future, |
1588 | much of this logic could (should?) be moved to bpstat_stop_status, | |
65b07ddc DT |
1589 | by having it set different print_it functions. |
1590 | ||
1591 | Current scheme: When we stop, bpstat_print() is called. | |
1592 | It loops through the bpstat list of things causing this stop, | |
1593 | calling the print_it function for each one. The default | |
1594 | print_it function, used for breakpoints, is print_it_normal(). | |
1595 | (Also see print_it_noop() and print_it_done()). | |
1596 | ||
1597 | Return values from this routine (used by bpstat_print() to | |
1598 | decide what to do): | |
1599 | 1: Means we printed something, and we do *not* desire that | |
1600 | something to be followed by a location. | |
1601 | 0: Means we printed something, and we *do* desire that | |
1602 | something to be followed by a location. | |
1603 | -1: Means we printed nothing. */ | |
30875e1c | 1604 | |
8af68e4e JK |
1605 | static int |
1606 | print_it_normal (bs) | |
bd5635a1 RP |
1607 | bpstat bs; |
1608 | { | |
1609 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
1610 | which has since been deleted. */ | |
8af68e4e | 1611 | if (bs->breakpoint_at == NULL |
30875e1c | 1612 | || (bs->breakpoint_at->type != bp_breakpoint |
65b07ddc DT |
1613 | && bs->breakpoint_at->type != bp_catch_load |
1614 | && bs->breakpoint_at->type != bp_catch_unload | |
1615 | && bs->breakpoint_at->type != bp_catch_fork | |
1616 | && bs->breakpoint_at->type != bp_catch_vfork | |
1617 | && bs->breakpoint_at->type != bp_catch_exec | |
1618 | && bs->breakpoint_at->type != bp_catch_catch | |
1619 | && bs->breakpoint_at->type != bp_catch_throw | |
11054881 | 1620 | && bs->breakpoint_at->type != bp_hardware_breakpoint |
999dd04b | 1621 | && bs->breakpoint_at->type != bp_watchpoint |
11054881 KH |
1622 | && bs->breakpoint_at->type != bp_read_watchpoint |
1623 | && bs->breakpoint_at->type != bp_access_watchpoint | |
999dd04b | 1624 | && bs->breakpoint_at->type != bp_hardware_watchpoint)) |
65b07ddc | 1625 | return -1; |
bd5635a1 | 1626 | |
65b07ddc DT |
1627 | if (ep_is_shlib_catchpoint (bs->breakpoint_at)) |
1628 | { | |
1629 | annotate_catchpoint (bs->breakpoint_at->number); | |
1630 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1631 | if (bs->breakpoint_at->type == bp_catch_load) | |
1632 | printf_filtered ("loaded"); | |
1633 | else if (bs->breakpoint_at->type == bp_catch_unload) | |
1634 | printf_filtered ("unloaded"); | |
1635 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1636 | return 0; | |
1637 | } | |
1638 | else if (bs->breakpoint_at->type == bp_catch_fork || | |
1639 | bs->breakpoint_at->type == bp_catch_vfork) | |
1640 | { | |
1641 | annotate_catchpoint (bs->breakpoint_at->number); | |
1642 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1643 | if (bs->breakpoint_at->type == bp_catch_fork) | |
1644 | printf_filtered ("forked"); | |
1645 | else if (bs->breakpoint_at->type == bp_catch_vfork) | |
1646 | printf_filtered ("vforked"); | |
1647 | printf_filtered (" process %d), ", bs->breakpoint_at->forked_inferior_pid); | |
1648 | return 0; | |
1649 | } | |
1650 | else if (bs->breakpoint_at->type == bp_catch_exec) | |
1651 | { | |
1652 | annotate_catchpoint (bs->breakpoint_at->number); | |
1653 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
1654 | bs->breakpoint_at->number, | |
1655 | bs->breakpoint_at->exec_pathname); | |
1656 | return 0; | |
1657 | } | |
1658 | else if (bs->breakpoint_at->type == bp_catch_catch) | |
1659 | { | |
1660 | if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
1661 | { | |
1662 | annotate_catchpoint (bs->breakpoint_at->number); | |
1663 | printf_filtered ("\nCatchpoint %d (exception caught), ", bs->breakpoint_at->number); | |
1664 | printf_filtered ("throw location "); | |
1665 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1666 | printf_filtered ("%s:%d", | |
1667 | CURRENT_EXCEPTION_THROW_FILE, | |
1668 | CURRENT_EXCEPTION_THROW_LINE); | |
1669 | else | |
1670 | printf_filtered ("unknown"); | |
1671 | ||
1672 | printf_filtered (", catch location "); | |
1673 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1674 | printf_filtered ("%s:%d", | |
1675 | CURRENT_EXCEPTION_CATCH_FILE, | |
1676 | CURRENT_EXCEPTION_CATCH_LINE); | |
1677 | else | |
1678 | printf_filtered ("unknown"); | |
1679 | ||
1680 | printf_filtered ("\n"); | |
1681 | return 1; /* don't bother to print location frame info */ | |
1682 | } | |
1683 | else | |
1684 | { | |
1685 | return -1; /* really throw, some other bpstat will handle it */ | |
1686 | } | |
1687 | } | |
1688 | else if (bs->breakpoint_at->type == bp_catch_throw) | |
1689 | { | |
1690 | if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
1691 | { | |
1692 | annotate_catchpoint (bs->breakpoint_at->number); | |
1693 | printf_filtered ("\nCatchpoint %d (exception thrown), ", bs->breakpoint_at->number); | |
1694 | printf_filtered ("throw location "); | |
1695 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1696 | printf_filtered ("%s:%d", | |
1697 | CURRENT_EXCEPTION_THROW_FILE, | |
1698 | CURRENT_EXCEPTION_THROW_LINE); | |
1699 | else | |
1700 | printf_filtered ("unknown"); | |
1701 | ||
1702 | printf_filtered (", catch location "); | |
1703 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1704 | printf_filtered ("%s:%d", | |
1705 | CURRENT_EXCEPTION_CATCH_FILE, | |
1706 | CURRENT_EXCEPTION_CATCH_LINE); | |
1707 | else | |
1708 | printf_filtered ("unknown"); | |
1709 | ||
1710 | printf_filtered ("\n"); | |
1711 | return 1; /* don't bother to print location frame info */ | |
1712 | } | |
1713 | else | |
1714 | { | |
1715 | return -1; /* really catch, some other bpstat willhandle it */ | |
1716 | } | |
1717 | } | |
1718 | ||
1719 | else if (bs->breakpoint_at->type == bp_breakpoint || | |
11054881 | 1720 | bs->breakpoint_at->type == bp_hardware_breakpoint) |
bd5635a1 RP |
1721 | { |
1722 | /* I think the user probably only wants to see one breakpoint | |
1723 | number, not all of them. */ | |
f2d9c058 | 1724 | annotate_breakpoint (bs->breakpoint_at->number); |
bd5635a1 RP |
1725 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); |
1726 | return 0; | |
1727 | } | |
11054881 KH |
1728 | else if ((bs->old_val != NULL) && |
1729 | (bs->breakpoint_at->type == bp_watchpoint || | |
1730 | bs->breakpoint_at->type == bp_access_watchpoint || | |
1731 | bs->breakpoint_at->type == bp_hardware_watchpoint)) | |
bd5635a1 | 1732 | { |
f2d9c058 | 1733 | annotate_watchpoint (bs->breakpoint_at->number); |
11054881 | 1734 | mention (bs->breakpoint_at); |
bd5635a1 | 1735 | printf_filtered ("\nOld value = "); |
199b2450 | 1736 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); |
bd5635a1 | 1737 | printf_filtered ("\nNew value = "); |
199b2450 | 1738 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
bd5635a1 RP |
1739 | Val_pretty_default); |
1740 | printf_filtered ("\n"); | |
1741 | value_free (bs->old_val); | |
1742 | bs->old_val = NULL; | |
bd2f0c85 JL |
1743 | /* More than one watchpoint may have been triggered. */ |
1744 | return -1; | |
bd5635a1 | 1745 | } |
11054881 KH |
1746 | else if (bs->breakpoint_at->type == bp_access_watchpoint || |
1747 | bs->breakpoint_at->type == bp_read_watchpoint) | |
1748 | { | |
1749 | mention (bs->breakpoint_at); | |
1750 | printf_filtered ("\nValue = "); | |
1751 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
1752 | Val_pretty_default); | |
1753 | printf_filtered ("\n"); | |
1754 | return -1; | |
1755 | } | |
8af68e4e JK |
1756 | /* We can't deal with it. Maybe another member of the bpstat chain can. */ |
1757 | return -1; | |
1758 | } | |
1759 | ||
65b07ddc DT |
1760 | /* Print a message indicating what happened. |
1761 | This is called from normal_stop(). | |
1762 | The input to this routine is the head of the bpstat list - a list | |
1763 | of the eventpoints that caused this stop. | |
1764 | This routine calls the "print_it" routine(s) associated | |
1765 | with these eventpoints. This will print (for example) | |
1766 | the "Breakpoint n," part of the output. | |
1767 | The return value of this routine is one of: | |
1768 | ||
1769 | -1: Means we printed nothing | |
1770 | 0: Means we printed something, and expect subsequent | |
1771 | code to print the location. An example is | |
1772 | "Breakpoint 1, " which should be followed by | |
1773 | the location. | |
1774 | 1 : Means we printed something, but there is no need | |
1775 | to also print the location part of the message. | |
1776 | An example is the catch/throw messages, which | |
1777 | don't require a location appended to the end. */ | |
1778 | ||
8af68e4e JK |
1779 | int |
1780 | bpstat_print (bs) | |
1781 | bpstat bs; | |
1782 | { | |
1783 | int val; | |
1784 | ||
1785 | if (bs == NULL) | |
65b07ddc | 1786 | return -1; |
bd5635a1 | 1787 | |
8af68e4e JK |
1788 | val = (*bs->print_it) (bs); |
1789 | if (val >= 0) | |
1790 | return val; | |
1791 | ||
fcb887ff JK |
1792 | /* Maybe another breakpoint in the chain caused us to stop. |
1793 | (Currently all watchpoints go on the bpstat whether hit or | |
1794 | not. That probably could (should) be changed, provided care is taken | |
1795 | with respect to bpstat_explains_signal). */ | |
1796 | if (bs->next) | |
1797 | return bpstat_print (bs->next); | |
1798 | ||
cabd4da6 | 1799 | /* We reached the end of the chain without printing anything. */ |
65b07ddc | 1800 | return -1; |
bd5635a1 RP |
1801 | } |
1802 | ||
1803 | /* Evaluate the expression EXP and return 1 if value is zero. | |
1804 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
bdbd5f50 | 1805 | The argument is a "struct expression *" that has been cast to char * to |
bd5635a1 RP |
1806 | make it pass through catch_errors. */ |
1807 | ||
1808 | static int | |
1809 | breakpoint_cond_eval (exp) | |
bdbd5f50 | 1810 | char *exp; |
bd5635a1 | 1811 | { |
11054881 KH |
1812 | value_ptr mark = value_mark (); |
1813 | int i = !value_true (evaluate_expression ((struct expression *)exp)); | |
1814 | value_free_to_mark (mark); | |
1815 | return i; | |
bd5635a1 RP |
1816 | } |
1817 | ||
1818 | /* Allocate a new bpstat and chain it to the current one. */ | |
1819 | ||
1820 | static bpstat | |
1821 | bpstat_alloc (b, cbs) | |
1822 | register struct breakpoint *b; | |
1823 | bpstat cbs; /* Current "bs" value */ | |
1824 | { | |
1825 | bpstat bs; | |
1826 | ||
1827 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
1828 | cbs->next = bs; | |
1829 | bs->breakpoint_at = b; | |
1830 | /* If the condition is false, etc., don't do the commands. */ | |
1831 | bs->commands = NULL; | |
bd5635a1 | 1832 | bs->old_val = NULL; |
8af68e4e | 1833 | bs->print_it = print_it_normal; |
bd5635a1 RP |
1834 | return bs; |
1835 | } | |
fa99ebe1 | 1836 | \f |
8af68e4e JK |
1837 | /* Possible return values for watchpoint_check (this can't be an enum |
1838 | because of check_errors). */ | |
999dd04b JL |
1839 | /* The watchpoint has been deleted. */ |
1840 | #define WP_DELETED 1 | |
8af68e4e JK |
1841 | /* The value has changed. */ |
1842 | #define WP_VALUE_CHANGED 2 | |
1843 | /* The value has not changed. */ | |
1844 | #define WP_VALUE_NOT_CHANGED 3 | |
1845 | ||
e8bf33c4 JK |
1846 | #define BP_TEMPFLAG 1 |
1847 | #define BP_HARDWAREFLAG 2 | |
1848 | ||
8af68e4e | 1849 | /* Check watchpoint condition. */ |
557f3a0e | 1850 | |
8af68e4e JK |
1851 | static int |
1852 | watchpoint_check (p) | |
fe675038 | 1853 | char *p; |
8af68e4e JK |
1854 | { |
1855 | bpstat bs = (bpstat) p; | |
11054881 | 1856 | struct breakpoint *b; |
2b576293 C |
1857 | struct frame_info *fr; |
1858 | int within_current_scope; | |
999dd04b | 1859 | |
557f3a0e SS |
1860 | b = bs->breakpoint_at; |
1861 | ||
1862 | if (b->exp_valid_block == NULL) | |
8af68e4e | 1863 | within_current_scope = 1; |
fa99ebe1 JK |
1864 | else |
1865 | { | |
706dc3ce JL |
1866 | /* There is no current frame at this moment. If we're going to have |
1867 | any chance of handling watchpoints on local variables, we'll need | |
1868 | the frame chain (so we can determine if we're in scope). */ | |
1869 | reinit_frame_cache(); | |
557f3a0e | 1870 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
999dd04b | 1871 | within_current_scope = (fr != NULL); |
fa99ebe1 JK |
1872 | if (within_current_scope) |
1873 | /* If we end up stopping, the current frame will get selected | |
1874 | in normal_stop. So this call to select_frame won't affect | |
1875 | the user. */ | |
1876 | select_frame (fr, -1); | |
1877 | } | |
1878 | ||
8af68e4e JK |
1879 | if (within_current_scope) |
1880 | { | |
1881 | /* We use value_{,free_to_}mark because it could be a | |
1882 | *long* time before we return to the command level and | |
cef4c2e7 PS |
1883 | call free_all_values. We can't call free_all_values because |
1884 | we might be in the middle of evaluating a function call. */ | |
8af68e4e | 1885 | |
82a2edfb JK |
1886 | value_ptr mark = value_mark (); |
1887 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
557f3a0e | 1888 | if (!value_equal (b->val, new_val)) |
8af68e4e JK |
1889 | { |
1890 | release_value (new_val); | |
1891 | value_free_to_mark (mark); | |
557f3a0e SS |
1892 | bs->old_val = b->val; |
1893 | b->val = new_val; | |
8af68e4e JK |
1894 | /* We will stop here */ |
1895 | return WP_VALUE_CHANGED; | |
1896 | } | |
1897 | else | |
1898 | { | |
1899 | /* Nothing changed, don't do anything. */ | |
1900 | value_free_to_mark (mark); | |
1901 | /* We won't stop here */ | |
1902 | return WP_VALUE_NOT_CHANGED; | |
1903 | } | |
1904 | } | |
1905 | else | |
1906 | { | |
1907 | /* This seems like the only logical thing to do because | |
1908 | if we temporarily ignored the watchpoint, then when | |
1909 | we reenter the block in which it is valid it contains | |
1910 | garbage (in the case of a function, it may have two | |
1911 | garbage values, one before and one after the prologue). | |
1912 | So we can't even detect the first assignment to it and | |
1913 | watch after that (since the garbage may or may not equal | |
1914 | the first value assigned). */ | |
8af68e4e | 1915 | printf_filtered ("\ |
999dd04b | 1916 | Watchpoint %d deleted because the program has left the block in\n\ |
8af68e4e | 1917 | which its expression is valid.\n", bs->breakpoint_at->number); |
557f3a0e | 1918 | if (b->related_breakpoint) |
6b038bd9 | 1919 | b->related_breakpoint->disposition = del_at_next_stop; |
e51481f9 | 1920 | b->disposition = del_at_next_stop; |
999dd04b | 1921 | |
999dd04b | 1922 | return WP_DELETED; |
8af68e4e JK |
1923 | } |
1924 | } | |
1925 | ||
1926 | /* This is used when everything which needs to be printed has | |
1927 | already been printed. But we still want to print the frame. */ | |
65b07ddc DT |
1928 | |
1929 | /* Background: When we stop, bpstat_print() is called. | |
1930 | It loops through the bpstat list of things causing this stop, | |
1931 | calling the print_it function for each one. The default | |
1932 | print_it function, used for breakpoints, is print_it_normal(). | |
1933 | Also see print_it_noop() and print_it_done() are the other | |
1934 | two possibilities. See comments in bpstat_print() and | |
1935 | in header of print_it_normal() for more detail. */ | |
1936 | ||
8af68e4e | 1937 | static int |
cabd4da6 | 1938 | print_it_done (bs) |
8af68e4e JK |
1939 | bpstat bs; |
1940 | { | |
1941 | return 0; | |
1942 | } | |
1943 | ||
cabd4da6 | 1944 | /* This is used when nothing should be printed for this bpstat entry. */ |
65b07ddc DT |
1945 | /* Background: When we stop, bpstat_print() is called. |
1946 | It loops through the bpstat list of things causing this stop, | |
1947 | calling the print_it function for each one. The default | |
1948 | print_it function, used for breakpoints, is print_it_normal(). | |
1949 | Also see print_it_noop() and print_it_done() are the other | |
1950 | two possibilities. See comments in bpstat_print() and | |
1951 | in header of print_it_normal() for more detail. */ | |
cabd4da6 JK |
1952 | |
1953 | static int | |
1954 | print_it_noop (bs) | |
1955 | bpstat bs; | |
1956 | { | |
1957 | return -1; | |
1958 | } | |
1959 | ||
cb6b0202 | 1960 | /* Get a bpstat associated with having just stopped at address *PC |
706dc3ce | 1961 | and frame address CORE_ADDRESS. Update *PC to point at the |
cb6b0202 JK |
1962 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero |
1963 | if this is known to not be a real breakpoint (it could still be a | |
1964 | watchpoint, though). */ | |
1965 | ||
bd5635a1 RP |
1966 | /* Determine whether we stopped at a breakpoint, etc, or whether we |
1967 | don't understand this stop. Result is a chain of bpstat's such that: | |
1968 | ||
1969 | if we don't understand the stop, the result is a null pointer. | |
1970 | ||
cb6b0202 | 1971 | if we understand why we stopped, the result is not null. |
bd5635a1 RP |
1972 | |
1973 | Each element of the chain refers to a particular breakpoint or | |
1974 | watchpoint at which we have stopped. (We may have stopped for | |
2d313932 | 1975 | several reasons concurrently.) |
bd5635a1 RP |
1976 | |
1977 | Each element of the chain has valid next, breakpoint_at, | |
65b07ddc | 1978 | commands, FIXME??? fields. */ |
bd5635a1 | 1979 | |
bd5635a1 | 1980 | bpstat |
16726dd1 | 1981 | bpstat_stop_status (pc, not_a_breakpoint) |
bd5635a1 | 1982 | CORE_ADDR *pc; |
cb6b0202 | 1983 | int not_a_breakpoint; |
bd5635a1 | 1984 | { |
fa3764e2 | 1985 | register struct breakpoint *b, *temp; |
bd5635a1 RP |
1986 | CORE_ADDR bp_addr; |
1987 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
1988 | int real_breakpoint = 0; | |
1989 | /* Root of the chain of bpstat's */ | |
e8bf33c4 | 1990 | struct bpstats root_bs[1]; |
bd5635a1 RP |
1991 | /* Pointer to the last thing in the chain currently. */ |
1992 | bpstat bs = root_bs; | |
11054881 KH |
1993 | static char message1[] = |
1994 | "Error evaluating expression for watchpoint %d\n"; | |
1995 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 RP |
1996 | |
1997 | /* Get the address where the breakpoint would have been. */ | |
1998 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
1999 | ||
fa3764e2 | 2000 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 2001 | { |
fa3764e2 | 2002 | if (b->enable == disabled |
65b07ddc DT |
2003 | || b->enable == shlib_disabled |
2004 | || b->enable == call_disabled) | |
bd5635a1 | 2005 | continue; |
30875e1c | 2006 | |
999dd04b JL |
2007 | if (b->type != bp_watchpoint |
2008 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
2009 | && b->type != bp_read_watchpoint |
2010 | && b->type != bp_access_watchpoint | |
65b07ddc DT |
2011 | && b->type != bp_hardware_breakpoint |
2012 | && b->type != bp_catch_fork | |
2013 | && b->type != bp_catch_vfork | |
2014 | && b->type != bp_catch_exec | |
2015 | && b->type != bp_catch_catch | |
2016 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
6b038bd9 DT |
2017 | if (b->address != bp_addr || /* address doesn't match or */ |
2018 | (overlay_debugging && /* overlay doesn't match */ | |
2019 | section_is_overlay (b->section) && | |
2020 | !section_is_mapped (b->section))) | |
2021 | continue; | |
bd5635a1 | 2022 | |
11054881 KH |
2023 | if (b->type == bp_hardware_breakpoint |
2024 | && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK)) | |
2025 | continue; | |
2026 | ||
999dd04b JL |
2027 | if (b->type != bp_watchpoint |
2028 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
2029 | && b->type != bp_read_watchpoint |
2030 | && b->type != bp_access_watchpoint | |
999dd04b | 2031 | && not_a_breakpoint) |
cb6b0202 JK |
2032 | continue; |
2033 | ||
65b07ddc DT |
2034 | /* Is this a catchpoint of a load or unload? If so, did we |
2035 | get a load or unload of the specified library? If not, | |
2036 | ignore it. */ | |
2037 | if ((b->type == bp_catch_load) | |
2038 | #if defined(SOLIB_HAVE_LOAD_EVENT) | |
2039 | && (!SOLIB_HAVE_LOAD_EVENT(inferior_pid) | |
2040 | || ((b->dll_pathname != NULL) | |
2041 | && (strcmp (b->dll_pathname, SOLIB_LOADED_LIBRARY_PATHNAME(inferior_pid)) != 0))) | |
2042 | #endif | |
2043 | ) | |
2044 | continue; | |
2045 | ||
2046 | if ((b->type == bp_catch_unload) | |
2047 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) | |
2048 | && (!SOLIB_HAVE_UNLOAD_EVENT(inferior_pid) | |
2049 | || ((b->dll_pathname != NULL) | |
2050 | && (strcmp (b->dll_pathname, SOLIB_UNLOADED_LIBRARY_PATHNAME(inferior_pid)) != 0))) | |
2051 | #endif | |
2052 | ) | |
2053 | continue; | |
2054 | ||
2055 | if ((b->type == bp_catch_fork) | |
2056 | && ! target_has_forked (inferior_pid, &b->forked_inferior_pid)) | |
2057 | continue; | |
2058 | ||
2059 | if ((b->type == bp_catch_vfork) | |
2060 | && ! target_has_vforked (inferior_pid, &b->forked_inferior_pid)) | |
2061 | continue; | |
2062 | ||
2063 | if ((b->type == bp_catch_exec) | |
2064 | && ! target_has_execd (inferior_pid, &b->exec_pathname)) | |
2065 | continue; | |
30875e1c | 2066 | |
65b07ddc DT |
2067 | if (ep_is_exception_catchpoint (b) && |
2068 | !(current_exception_event = target_get_current_exception_event ())) | |
2069 | continue; | |
2070 | ||
2071 | /* Come here if it's a watchpoint, or if the break address matches */ | |
9f577285 | 2072 | |
bd5635a1 RP |
2073 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ |
2074 | ||
65b07ddc | 2075 | /* Watchpoints may change this, if not found to have triggered. */ |
cabd4da6 JK |
2076 | bs->stop = 1; |
2077 | bs->print = 1; | |
bd5635a1 | 2078 | |
11054881 | 2079 | sprintf (message, message1, b->number); |
999dd04b | 2080 | if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) |
bd5635a1 | 2081 | { |
65b07ddc | 2082 | switch (catch_errors ((int (*) PARAMS ((char *))) watchpoint_check, (char *) bs, message, |
fe675038 | 2083 | RETURN_MASK_ALL)) |
bd5635a1 | 2084 | { |
999dd04b | 2085 | case WP_DELETED: |
8af68e4e | 2086 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 2087 | bs->print_it = print_it_done; |
8af68e4e JK |
2088 | /* Stop. */ |
2089 | break; | |
2090 | case WP_VALUE_CHANGED: | |
2091 | /* Stop. */ | |
65b07ddc | 2092 | ++(b->hit_count); |
8af68e4e JK |
2093 | break; |
2094 | case WP_VALUE_NOT_CHANGED: | |
2095 | /* Don't stop. */ | |
cabd4da6 JK |
2096 | bs->print_it = print_it_noop; |
2097 | bs->stop = 0; | |
92fb1f2e SS |
2098 | /* Don't consider this a hit. */ |
2099 | --(b->hit_count); | |
bd5635a1 | 2100 | continue; |
8af68e4e JK |
2101 | default: |
2102 | /* Can't happen. */ | |
2103 | /* FALLTHROUGH */ | |
2104 | case 0: | |
2105 | /* Error from catch_errors. */ | |
999dd04b JL |
2106 | printf_filtered ("Watchpoint %d deleted.\n", b->number); |
2107 | if (b->related_breakpoint) | |
6b038bd9 | 2108 | b->related_breakpoint->disposition = del_at_next_stop; |
e51481f9 | 2109 | b->disposition = del_at_next_stop; |
8af68e4e | 2110 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 2111 | bs->print_it = print_it_done; |
999dd04b | 2112 | |
8af68e4e JK |
2113 | /* Stop. */ |
2114 | break; | |
bd5635a1 RP |
2115 | } |
2116 | } | |
11054881 KH |
2117 | else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) |
2118 | { | |
2119 | CORE_ADDR addr; | |
2120 | value_ptr v; | |
2121 | int found = 0; | |
2122 | ||
2123 | addr = target_stopped_data_address(); | |
2124 | if (addr == 0) continue; | |
2125 | for (v = b->val_chain; v; v = v->next) | |
2126 | { | |
2127 | if (v->lval == lval_memory) | |
2128 | { | |
2129 | CORE_ADDR vaddr; | |
2130 | ||
2131 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2132 | if (addr == vaddr) | |
2133 | found = 1; | |
2134 | } | |
2135 | } | |
2136 | if (found) | |
65b07ddc | 2137 | switch (catch_errors ((int (*) PARAMS ((char *))) watchpoint_check, (char *) bs, message, |
11054881 KH |
2138 | RETURN_MASK_ALL)) |
2139 | { | |
2140 | case WP_DELETED: | |
2141 | /* We've already printed what needs to be printed. */ | |
2142 | bs->print_it = print_it_done; | |
2143 | /* Stop. */ | |
2144 | break; | |
2145 | case WP_VALUE_CHANGED: | |
2146 | case WP_VALUE_NOT_CHANGED: | |
2147 | /* Stop. */ | |
65b07ddc | 2148 | ++(b->hit_count); |
11054881 KH |
2149 | break; |
2150 | default: | |
2151 | /* Can't happen. */ | |
2152 | case 0: | |
2153 | /* Error from catch_errors. */ | |
2154 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
e51481f9 | 2155 | if (b->related_breakpoint) |
6b038bd9 | 2156 | b->related_breakpoint->disposition = del_at_next_stop; |
e51481f9 | 2157 | b->disposition = del_at_next_stop; |
11054881 KH |
2158 | /* We've already printed what needs to be printed. */ |
2159 | bs->print_it = print_it_done; | |
2160 | break; | |
2161 | } | |
2162 | } | |
65b07ddc DT |
2163 | else |
2164 | { | |
2165 | /* By definition, an encountered breakpoint is a triggered | |
2166 | breakpoint. */ | |
2167 | ++(b->hit_count); | |
2168 | ||
2169 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2170 | real_breakpoint = 1; | |
2171 | } | |
bd5635a1 | 2172 | |
6ee2da94 FCE |
2173 | if (b->frame && b->frame != (get_current_frame ())->frame && |
2174 | (b->type == bp_step_resume && | |
65b07ddc | 2175 | (INNER_THAN (get_current_frame ()->frame, b->frame)))) |
cabd4da6 | 2176 | bs->stop = 0; |
bd5635a1 RP |
2177 | else |
2178 | { | |
fee933f1 | 2179 | int value_is_zero = 0; |
bd5635a1 RP |
2180 | |
2181 | if (b->cond) | |
2182 | { | |
2183 | /* Need to select the frame, with all that implies | |
2184 | so that the conditions will have the right context. */ | |
2185 | select_frame (get_current_frame (), 0); | |
bdbd5f50 | 2186 | value_is_zero |
65b07ddc | 2187 | = catch_errors ((int (*) PARAMS ((char *))) breakpoint_cond_eval, (char *)(b->cond), |
fe675038 JK |
2188 | "Error in testing breakpoint condition:\n", |
2189 | RETURN_MASK_ALL); | |
06b6c733 | 2190 | /* FIXME-someday, should give breakpoint # */ |
bd5635a1 RP |
2191 | free_all_values (); |
2192 | } | |
bdbd5f50 | 2193 | if (b->cond && value_is_zero) |
bd5635a1 | 2194 | { |
cabd4da6 | 2195 | bs->stop = 0; |
92fb1f2e SS |
2196 | /* Don't consider this a hit. */ |
2197 | --(b->hit_count); | |
bd5635a1 RP |
2198 | } |
2199 | else if (b->ignore_count > 0) | |
2200 | { | |
2201 | b->ignore_count--; | |
cabd4da6 | 2202 | bs->stop = 0; |
bd5635a1 RP |
2203 | } |
2204 | else | |
2205 | { | |
2206 | /* We will stop here */ | |
30875e1c | 2207 | if (b->disposition == disable) |
bd5635a1 RP |
2208 | b->enable = disabled; |
2209 | bs->commands = b->commands; | |
2210 | if (b->silent) | |
cabd4da6 | 2211 | bs->print = 0; |
65b07ddc DT |
2212 | if (bs->commands && |
2213 | (STREQ ("silent", bs->commands->line) || | |
2214 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
bd5635a1 RP |
2215 | { |
2216 | bs->commands = bs->commands->next; | |
cabd4da6 | 2217 | bs->print = 0; |
bd5635a1 RP |
2218 | } |
2219 | } | |
2220 | } | |
cabd4da6 JK |
2221 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
2222 | if (bs->stop == 0 || bs->print == 0) | |
2223 | bs->print_it = print_it_noop; | |
bd5635a1 RP |
2224 | } |
2225 | ||
2226 | bs->next = NULL; /* Terminate the chain */ | |
2227 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
6b038bd9 DT |
2228 | |
2229 | if ((DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) && bs) | |
bd5635a1 | 2230 | { |
bd5635a1 RP |
2231 | if (real_breakpoint) |
2232 | { | |
2233 | *pc = bp_addr; | |
2234 | #if defined (SHIFT_INST_REGS) | |
817ac7f8 | 2235 | SHIFT_INST_REGS(); |
bd5635a1 RP |
2236 | #else /* No SHIFT_INST_REGS. */ |
2237 | write_pc (bp_addr); | |
2238 | #endif /* No SHIFT_INST_REGS. */ | |
2239 | } | |
bd5635a1 | 2240 | } |
999dd04b JL |
2241 | |
2242 | /* The value of a hardware watchpoint hasn't changed, but the | |
2243 | intermediate memory locations we are watching may have. */ | |
11054881 KH |
2244 | if (bs && ! bs->stop && |
2245 | (bs->breakpoint_at->type == bp_hardware_watchpoint || | |
2246 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2247 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
999dd04b JL |
2248 | { |
2249 | remove_breakpoints (); | |
2250 | insert_breakpoints (); | |
2251 | } | |
bd5635a1 RP |
2252 | return bs; |
2253 | } | |
cabd4da6 JK |
2254 | \f |
2255 | /* Tell what to do about this bpstat. */ | |
fe675038 | 2256 | struct bpstat_what |
cabd4da6 JK |
2257 | bpstat_what (bs) |
2258 | bpstat bs; | |
2259 | { | |
2260 | /* Classify each bpstat as one of the following. */ | |
2261 | enum class { | |
fe675038 JK |
2262 | /* This bpstat element has no effect on the main_action. */ |
2263 | no_effect = 0, | |
cabd4da6 JK |
2264 | |
2265 | /* There was a watchpoint, stop but don't print. */ | |
2266 | wp_silent, | |
2267 | ||
2268 | /* There was a watchpoint, stop and print. */ | |
2269 | wp_noisy, | |
2270 | ||
2271 | /* There was a breakpoint but we're not stopping. */ | |
2272 | bp_nostop, | |
2273 | ||
2274 | /* There was a breakpoint, stop but don't print. */ | |
2275 | bp_silent, | |
2276 | ||
2277 | /* There was a breakpoint, stop and print. */ | |
2278 | bp_noisy, | |
2279 | ||
2280 | /* We hit the longjmp breakpoint. */ | |
2281 | long_jump, | |
2282 | ||
2283 | /* We hit the longjmp_resume breakpoint. */ | |
2284 | long_resume, | |
2285 | ||
d7e7e851 JK |
2286 | /* We hit the step_resume breakpoint. */ |
2287 | step_resume, | |
2288 | ||
bcc37718 JK |
2289 | /* We hit the through_sigtramp breakpoint. */ |
2290 | through_sig, | |
2291 | ||
27b6a1fa JL |
2292 | /* We hit the shared library event breakpoint. */ |
2293 | shlib_event, | |
2294 | ||
65b07ddc DT |
2295 | /* We caught a shared library event. */ |
2296 | catch_shlib_event, | |
2297 | ||
cabd4da6 JK |
2298 | /* This is just used to count how many enums there are. */ |
2299 | class_last | |
2300 | }; | |
2301 | ||
2302 | /* Here is the table which drives this routine. So that we can | |
2303 | format it pretty, we define some abbreviations for the | |
2304 | enum bpstat_what codes. */ | |
27b6a1fa JL |
2305 | #define kc BPSTAT_WHAT_KEEP_CHECKING |
2306 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2307 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2308 | #define sgl BPSTAT_WHAT_SINGLE | |
2309 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2310 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2311 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
d7e7e851 | 2312 | #define sr BPSTAT_WHAT_STEP_RESUME |
bcc37718 | 2313 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP |
27b6a1fa | 2314 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
65b07ddc | 2315 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK |
d7e7e851 | 2316 | |
cabd4da6 JK |
2317 | /* "Can't happen." Might want to print an error message. |
2318 | abort() is not out of the question, but chances are GDB is just | |
2319 | a bit confused, not unusable. */ | |
2320 | #define err BPSTAT_WHAT_STOP_NOISY | |
2321 | ||
2322 | /* Given an old action and a class, come up with a new action. */ | |
84d59861 JK |
2323 | /* One interesting property of this table is that wp_silent is the same |
2324 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2325 | after stopping, the check for whether to step over a breakpoint | |
2326 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
2327 | reference to how we stopped. We retain separate wp_silent and bp_silent | |
2328 | codes in case we want to change that someday. */ | |
d7e7e851 JK |
2329 | |
2330 | /* step_resume entries: a step resume breakpoint overrides another | |
2331 | breakpoint of signal handling (see comment in wait_for_inferior | |
2332 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
bcc37718 JK |
2333 | /* We handle the through_sigtramp_breakpoint the same way; having both |
2334 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
d7e7e851 | 2335 | |
fe675038 | 2336 | static const enum bpstat_what_main_action |
cabd4da6 JK |
2337 | table[(int)class_last][(int)BPSTAT_WHAT_LAST] = |
2338 | { | |
2339 | /* old action */ | |
65b07ddc DT |
2340 | /* kc ss sn sgl slr clr clrs sr ts shl shlr |
2341 | */ | |
2342 | /*no_effect*/ {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2343 | /*wp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2344 | /*wp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2345 | /*bp_nostop*/ {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2346 | /*bp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2347 | /*bp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2348 | /*long_jump*/ {slr, ss, sn, slr, err, err, err, sr, ts, shl, shlr}, | |
2349 | /*long_resume*/ {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2350 | /*step_resume*/ {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2351 | /*through_sig*/ {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2352 | /*shlib*/ {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2353 | /*catch_shlib*/ {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2354 | }; | |
2355 | ||
27b6a1fa JL |
2356 | #undef kc |
2357 | #undef ss | |
2358 | #undef sn | |
2359 | #undef sgl | |
2360 | #undef slr | |
2361 | #undef clr | |
2362 | #undef clrs | |
cabd4da6 | 2363 | #undef err |
bcc37718 JK |
2364 | #undef sr |
2365 | #undef ts | |
27b6a1fa | 2366 | #undef shl |
65b07ddc | 2367 | #undef shlr |
fe675038 | 2368 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
84d59861 | 2369 | struct bpstat_what retval; |
cabd4da6 | 2370 | |
cef4c2e7 | 2371 | retval.call_dummy = 0; |
cabd4da6 JK |
2372 | for (; bs != NULL; bs = bs->next) |
2373 | { | |
fee933f1 | 2374 | enum class bs_class = no_effect; |
cabd4da6 JK |
2375 | if (bs->breakpoint_at == NULL) |
2376 | /* I suspect this can happen if it was a momentary breakpoint | |
2377 | which has since been deleted. */ | |
2378 | continue; | |
2379 | switch (bs->breakpoint_at->type) | |
2380 | { | |
65b07ddc DT |
2381 | case bp_none: |
2382 | continue; | |
2383 | ||
cabd4da6 | 2384 | case bp_breakpoint: |
11054881 | 2385 | case bp_hardware_breakpoint: |
cabd4da6 JK |
2386 | case bp_until: |
2387 | case bp_finish: | |
2388 | if (bs->stop) | |
2389 | { | |
2390 | if (bs->print) | |
2391 | bs_class = bp_noisy; | |
2392 | else | |
2393 | bs_class = bp_silent; | |
2394 | } | |
2395 | else | |
2396 | bs_class = bp_nostop; | |
2397 | break; | |
2398 | case bp_watchpoint: | |
999dd04b | 2399 | case bp_hardware_watchpoint: |
11054881 KH |
2400 | case bp_read_watchpoint: |
2401 | case bp_access_watchpoint: | |
cabd4da6 JK |
2402 | if (bs->stop) |
2403 | { | |
2404 | if (bs->print) | |
2405 | bs_class = wp_noisy; | |
2406 | else | |
2407 | bs_class = wp_silent; | |
2408 | } | |
2409 | else | |
fe675038 JK |
2410 | /* There was a watchpoint, but we're not stopping. This requires |
2411 | no further action. */ | |
2412 | bs_class = no_effect; | |
cabd4da6 JK |
2413 | break; |
2414 | case bp_longjmp: | |
2415 | bs_class = long_jump; | |
2416 | break; | |
2417 | case bp_longjmp_resume: | |
2418 | bs_class = long_resume; | |
2419 | break; | |
fe675038 | 2420 | case bp_step_resume: |
fe675038 JK |
2421 | if (bs->stop) |
2422 | { | |
d7e7e851 | 2423 | bs_class = step_resume; |
fe675038 JK |
2424 | } |
2425 | else | |
2426 | /* It is for the wrong frame. */ | |
2427 | bs_class = bp_nostop; | |
bcc37718 JK |
2428 | break; |
2429 | case bp_through_sigtramp: | |
2430 | bs_class = through_sig; | |
fe675038 | 2431 | break; |
999dd04b JL |
2432 | case bp_watchpoint_scope: |
2433 | bs_class = bp_nostop; | |
2434 | break; | |
27b6a1fa JL |
2435 | case bp_shlib_event: |
2436 | bs_class = shlib_event; | |
2437 | break; | |
65b07ddc DT |
2438 | case bp_catch_load: |
2439 | case bp_catch_unload: | |
2440 | /* Only if this catchpoint triggered should we cause the | |
2441 | step-out-of-dld behaviour. Otherwise, we ignore this | |
2442 | catchpoint. */ | |
2443 | if (bs->stop) | |
2444 | bs_class = catch_shlib_event; | |
2445 | else | |
2446 | bs_class = no_effect; | |
2447 | break; | |
2448 | case bp_catch_fork: | |
2449 | case bp_catch_vfork: | |
2450 | case bp_catch_exec: | |
2451 | if (bs->stop) | |
2452 | { | |
2453 | if (bs->print) | |
2454 | bs_class = bp_noisy; | |
2455 | else | |
2456 | bs_class = bp_silent; | |
2457 | } | |
2458 | else | |
2459 | /* There was a catchpoint, but we're not stopping. This requires | |
2460 | no further action. */ | |
2461 | bs_class = no_effect; | |
2462 | break; | |
2463 | case bp_catch_catch: | |
2464 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
2465 | bs_class = bp_nostop; | |
2466 | else if (bs->stop) | |
2467 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2468 | break; | |
2469 | case bp_catch_throw: | |
2470 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
2471 | bs_class = bp_nostop; | |
2472 | else if (bs->stop) | |
2473 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2474 | break; | |
84d59861 JK |
2475 | case bp_call_dummy: |
2476 | /* Make sure the action is stop (silent or noisy), so infrun.c | |
2477 | pops the dummy frame. */ | |
2478 | bs_class = bp_silent; | |
2479 | retval.call_dummy = 1; | |
bb7b3800 | 2480 | break; |
cabd4da6 JK |
2481 | } |
2482 | current_action = table[(int)bs_class][(int)current_action]; | |
2483 | } | |
84d59861 JK |
2484 | retval.main_action = current_action; |
2485 | return retval; | |
cabd4da6 | 2486 | } |
bd5635a1 | 2487 | |
30875e1c SG |
2488 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
2489 | without hardware support). This isn't related to a specific bpstat, | |
2490 | just to things like whether watchpoints are set. */ | |
2491 | ||
bd5635a1 RP |
2492 | int |
2493 | bpstat_should_step () | |
2494 | { | |
2495 | struct breakpoint *b; | |
2496 | ALL_BREAKPOINTS (b) | |
30875e1c | 2497 | if (b->enable == enabled && b->type == bp_watchpoint) |
bd5635a1 RP |
2498 | return 1; |
2499 | return 0; | |
2500 | } | |
65b07ddc DT |
2501 | |
2502 | /* Nonzero if there are enabled hardware watchpoints. */ | |
2503 | int | |
2504 | bpstat_have_active_hw_watchpoints () | |
2505 | { | |
2506 | struct breakpoint *b; | |
2507 | ALL_BREAKPOINTS (b) | |
2508 | if ((b->enable == enabled) && | |
2509 | (b->inserted) && | |
2510 | ((b->type == bp_hardware_watchpoint) || | |
2511 | (b->type == bp_read_watchpoint) || | |
2512 | (b->type == bp_access_watchpoint))) | |
2513 | return 1; | |
2514 | return 0; | |
2515 | } | |
2516 | ||
bd5635a1 | 2517 | \f |
65b07ddc DT |
2518 | /* Given a bpstat that records zero or more triggered eventpoints, this |
2519 | function returns another bpstat which contains only the catchpoints | |
2520 | on that first list, if any. */ | |
2521 | void | |
2522 | bpstat_get_triggered_catchpoints (ep_list, cp_list) | |
2523 | bpstat ep_list; | |
2524 | bpstat * cp_list; | |
2525 | { | |
2526 | struct bpstats root_bs[1]; | |
2527 | bpstat bs = root_bs; | |
2528 | struct breakpoint * ep; | |
2529 | char * dll_pathname; | |
2530 | ||
2531 | bpstat_clear (cp_list); | |
2532 | root_bs->next = NULL; | |
2533 | ||
2534 | for (; ep_list != NULL; ep_list = ep_list->next ) | |
2535 | { | |
2536 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
2537 | ep = ep_list->breakpoint_at; | |
2538 | if (ep == NULL) | |
2539 | break; | |
2540 | if ((ep->type != bp_catch_load) && | |
2541 | (ep->type != bp_catch_unload) && | |
2542 | (ep->type != bp_catch_catch) && | |
2543 | (ep->type != bp_catch_throw)) /* pai: (temp) ADD fork/vfork here!! */ | |
2544 | continue; | |
2545 | ||
2546 | /* Yes; add it to the list. */ | |
2547 | bs = bpstat_alloc (ep, bs); | |
2548 | *bs = *ep_list; | |
2549 | bs->next = NULL; | |
2550 | bs = root_bs->next; | |
2551 | ||
2552 | #if defined(SOLIB_ADD) | |
2553 | /* Also, for each triggered catchpoint, tag it with the name of | |
2554 | the library that caused this trigger. (We copy the name now, | |
2555 | because it's only guaranteed to be available NOW, when the | |
2556 | catchpoint triggers. Clients who may wish to know the name | |
2557 | later must get it from the catchpoint itself.) */ | |
2558 | if (ep->triggered_dll_pathname != NULL) | |
2559 | free (ep->triggered_dll_pathname); | |
2560 | if (ep->type == bp_catch_load) | |
2561 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid); | |
2562 | else | |
2563 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid); | |
2564 | #else | |
2565 | dll_pathname = NULL; | |
2566 | #endif | |
2567 | if (dll_pathname) | |
2568 | { | |
2569 | ep->triggered_dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
2570 | strcpy (ep->triggered_dll_pathname, dll_pathname); | |
2571 | } | |
2572 | else | |
2573 | ep->triggered_dll_pathname = NULL; | |
2574 | } | |
2575 | ||
2576 | *cp_list = bs; | |
2577 | } | |
2578 | ||
bd5635a1 RP |
2579 | /* Print information on breakpoint number BNUM, or -1 if all. |
2580 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
2581 | is nonzero, process only watchpoints. */ | |
2582 | ||
65b07ddc DT |
2583 | typedef struct { |
2584 | enum bptype type; | |
2585 | char * description; | |
2586 | } ep_type_description_t; | |
2587 | ||
bd5635a1 | 2588 | static void |
c8950965 | 2589 | breakpoint_1 (bnum, allflag) |
bd5635a1 | 2590 | int bnum; |
80ba48f5 | 2591 | int allflag; |
bd5635a1 RP |
2592 | { |
2593 | register struct breakpoint *b; | |
2594 | register struct command_line *l; | |
2595 | register struct symbol *sym; | |
2596 | CORE_ADDR last_addr = (CORE_ADDR)-1; | |
30875e1c | 2597 | int found_a_breakpoint = 0; |
65b07ddc DT |
2598 | static ep_type_description_t bptypes[] = |
2599 | { | |
2600 | {bp_none, "?deleted?"}, | |
2601 | {bp_breakpoint, "breakpoint"}, | |
2602 | {bp_hardware_breakpoint, "hw breakpoint"}, | |
2603 | {bp_until, "until"}, | |
2604 | {bp_finish, "finish"}, | |
2605 | {bp_watchpoint, "watchpoint"}, | |
2606 | {bp_hardware_watchpoint, "hw watchpoint"}, | |
2607 | {bp_read_watchpoint, "read watchpoint"}, | |
2608 | {bp_access_watchpoint, "acc watchpoint"}, | |
2609 | {bp_longjmp, "longjmp"}, | |
2610 | {bp_longjmp_resume, "longjmp resume"}, | |
2611 | {bp_step_resume, "step resume"}, | |
2612 | {bp_through_sigtramp, "sigtramp"}, | |
2613 | {bp_watchpoint_scope, "watchpoint scope"}, | |
2614 | {bp_call_dummy, "call dummy"}, | |
2615 | {bp_shlib_event, "shlib events"}, | |
2616 | {bp_catch_load, "catch load"}, | |
2617 | {bp_catch_unload, "catch unload"}, | |
2618 | {bp_catch_fork, "catch fork"}, | |
2619 | {bp_catch_vfork, "catch vfork"}, | |
2620 | {bp_catch_exec, "catch exec"}, | |
2621 | {bp_catch_catch, "catch catch"}, | |
2622 | {bp_catch_throw, "catch throw"} | |
2623 | }; | |
2624 | ||
e51481f9 | 2625 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; |
647e52ea | 2626 | static char bpenables[] = "nyn"; |
0a62ff36 | 2627 | char wrap_indent[80]; |
30875e1c | 2628 | |
bd5635a1 | 2629 | ALL_BREAKPOINTS (b) |
30875e1c SG |
2630 | if (bnum == -1 |
2631 | || bnum == b->number) | |
bd5635a1 | 2632 | { |
80ba48f5 SG |
2633 | /* We only print out user settable breakpoints unless the allflag is set. */ |
2634 | if (!allflag | |
2635 | && b->type != bp_breakpoint | |
65b07ddc DT |
2636 | && b->type != bp_catch_load |
2637 | && b->type != bp_catch_unload | |
2638 | && b->type != bp_catch_fork | |
2639 | && b->type != bp_catch_vfork | |
2640 | && b->type != bp_catch_exec | |
2641 | && b->type != bp_catch_catch | |
2642 | && b->type != bp_catch_throw | |
11054881 | 2643 | && b->type != bp_hardware_breakpoint |
999dd04b | 2644 | && b->type != bp_watchpoint |
11054881 KH |
2645 | && b->type != bp_read_watchpoint |
2646 | && b->type != bp_access_watchpoint | |
999dd04b | 2647 | && b->type != bp_hardware_watchpoint) |
80ba48f5 SG |
2648 | continue; |
2649 | ||
30875e1c | 2650 | if (!found_a_breakpoint++) |
47ebe8fd | 2651 | { |
f2d9c058 KH |
2652 | annotate_breakpoints_headers (); |
2653 | ||
2654 | annotate_field (0); | |
2655 | printf_filtered ("Num "); | |
2656 | annotate_field (1); | |
2657 | printf_filtered ("Type "); | |
2658 | annotate_field (2); | |
2659 | printf_filtered ("Disp "); | |
2660 | annotate_field (3); | |
2661 | printf_filtered ("Enb "); | |
2662 | if (addressprint) | |
2663 | { | |
2664 | annotate_field (4); | |
2665 | printf_filtered ("Address "); | |
2666 | } | |
2667 | annotate_field (5); | |
2668 | printf_filtered ("What\n"); | |
2669 | ||
2670 | annotate_breakpoints_table (); | |
2671 | } | |
2672 | ||
2673 | annotate_record (); | |
2674 | annotate_field (0); | |
2675 | printf_filtered ("%-3d ", b->number); | |
2676 | annotate_field (1); | |
65b07ddc DT |
2677 | if ((int)b->type > (sizeof(bptypes)/sizeof(bptypes[0]))) |
2678 | error ("bptypes table does not describe type #%d.", (int)b->type); | |
2679 | if ((int)b->type != bptypes[(int)b->type].type) | |
2680 | error ("bptypes table does not describe type #%d?", (int)b->type); | |
2681 | printf_filtered ("%-14s ", bptypes[(int)b->type].description); | |
f2d9c058 KH |
2682 | annotate_field (2); |
2683 | printf_filtered ("%-4s ", bpdisps[(int)b->disposition]); | |
2684 | annotate_field (3); | |
47ebe8fd JK |
2685 | printf_filtered ("%-3c ", bpenables[(int)b->enable]); |
2686 | ||
0a62ff36 JK |
2687 | strcpy (wrap_indent, " "); |
2688 | if (addressprint) | |
2689 | strcat (wrap_indent, " "); | |
30875e1c | 2690 | switch (b->type) |
bd5635a1 | 2691 | { |
30875e1c | 2692 | case bp_watchpoint: |
999dd04b | 2693 | case bp_hardware_watchpoint: |
11054881 KH |
2694 | case bp_read_watchpoint: |
2695 | case bp_access_watchpoint: | |
47ebe8fd JK |
2696 | /* Field 4, the address, is omitted (which makes the columns |
2697 | not line up too nicely with the headers, but the effect | |
2698 | is relatively readable). */ | |
9f577285 | 2699 | annotate_field (5); |
199b2450 | 2700 | print_expression (b->exp, gdb_stdout); |
30875e1c | 2701 | break; |
65b07ddc DT |
2702 | |
2703 | case bp_catch_load: | |
2704 | case bp_catch_unload: | |
2705 | /* Field 4, the address, is omitted (which makes the columns | |
2706 | not line up too nicely with the headers, but the effect | |
2707 | is relatively readable). */ | |
2708 | annotate_field (5); | |
2709 | if (b->dll_pathname == NULL) | |
2710 | printf_filtered ("<any library> "); | |
2711 | else | |
2712 | printf_filtered ("library \"%s\" ", b->dll_pathname); | |
2713 | break; | |
2714 | ||
2715 | case bp_catch_fork: | |
2716 | case bp_catch_vfork: | |
2717 | /* Field 4, the address, is omitted (which makes the columns | |
2718 | not line up too nicely with the headers, but the effect | |
2719 | is relatively readable). */ | |
2720 | annotate_field (5); | |
2721 | if (b->forked_inferior_pid != 0) | |
2722 | printf_filtered ("process %d ", b->forked_inferior_pid); | |
2723 | break; | |
2724 | ||
2725 | case bp_catch_exec: | |
2726 | /* Field 4, the address, is omitted (which makes the columns | |
2727 | not line up too nicely with the headers, but the effect | |
2728 | is relatively readable). */ | |
2729 | annotate_field (5); | |
2730 | if (b->exec_pathname != NULL) | |
2731 | printf_filtered ("program \"%s\" ", b->exec_pathname); | |
2732 | break; | |
2733 | case bp_catch_catch: | |
2734 | /* Field 4, the address, is omitted (which makes the columns | |
2735 | not line up too nicely with the headers, but the effect | |
2736 | is relatively readable). */ | |
2737 | annotate_field (5); | |
2738 | printf_filtered ("exception catch "); | |
2739 | break; | |
2740 | case bp_catch_throw: | |
2741 | /* Field 4, the address, is omitted (which makes the columns | |
2742 | not line up too nicely with the headers, but the effect | |
2743 | is relatively readable). */ | |
2744 | annotate_field (5); | |
2745 | printf_filtered ("exception throw "); | |
2746 | break; | |
84d59861 | 2747 | |
30875e1c | 2748 | case bp_breakpoint: |
11054881 | 2749 | case bp_hardware_breakpoint: |
80ba48f5 SG |
2750 | case bp_until: |
2751 | case bp_finish: | |
2752 | case bp_longjmp: | |
2753 | case bp_longjmp_resume: | |
84d59861 | 2754 | case bp_step_resume: |
bcc37718 | 2755 | case bp_through_sigtramp: |
999dd04b | 2756 | case bp_watchpoint_scope: |
bb7b3800 | 2757 | case bp_call_dummy: |
27b6a1fa | 2758 | case bp_shlib_event: |
bd5635a1 | 2759 | if (addressprint) |
47ebe8fd | 2760 | { |
f2d9c058 | 2761 | annotate_field (4); |
47ebe8fd JK |
2762 | /* FIXME-32x64: need a print_address_numeric with |
2763 | field width */ | |
2764 | printf_filtered | |
2765 | ("%s ", | |
2766 | local_hex_string_custom | |
2767 | ((unsigned long) b->address, "08l")); | |
2768 | } | |
2769 | ||
f2d9c058 | 2770 | annotate_field (5); |
bd5635a1 RP |
2771 | |
2772 | last_addr = b->address; | |
d889f6b7 | 2773 | if (b->source_file) |
bd5635a1 | 2774 | { |
6b038bd9 | 2775 | sym = find_pc_sect_function (b->address, b->section); |
bd5635a1 RP |
2776 | if (sym) |
2777 | { | |
199b2450 TL |
2778 | fputs_filtered ("in ", gdb_stdout); |
2779 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
0a62ff36 | 2780 | wrap_here (wrap_indent); |
199b2450 | 2781 | fputs_filtered (" at ", gdb_stdout); |
bd5635a1 | 2782 | } |
199b2450 | 2783 | fputs_filtered (b->source_file, gdb_stdout); |
bd5635a1 RP |
2784 | printf_filtered (":%d", b->line_number); |
2785 | } | |
2786 | else | |
199b2450 | 2787 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); |
fee933f1 | 2788 | break; |
bd5635a1 RP |
2789 | } |
2790 | ||
65b07ddc DT |
2791 | if (b->thread != -1) |
2792 | printf_filtered (" thread %d", b->thread ); | |
2793 | ||
bd5635a1 RP |
2794 | printf_filtered ("\n"); |
2795 | ||
2796 | if (b->frame) | |
833e0d94 | 2797 | { |
f2d9c058 | 2798 | annotate_field (6); |
47ebe8fd | 2799 | |
833e0d94 | 2800 | printf_filtered ("\tstop only in stack frame at "); |
d24c0599 | 2801 | print_address_numeric (b->frame, 1, gdb_stdout); |
833e0d94 | 2802 | printf_filtered ("\n"); |
bcc37718 | 2803 | } |
47ebe8fd | 2804 | |
bd5635a1 RP |
2805 | if (b->cond) |
2806 | { | |
f2d9c058 | 2807 | annotate_field (7); |
47ebe8fd | 2808 | |
bd5635a1 | 2809 | printf_filtered ("\tstop only if "); |
199b2450 | 2810 | print_expression (b->cond, gdb_stdout); |
bd5635a1 RP |
2811 | printf_filtered ("\n"); |
2812 | } | |
47ebe8fd | 2813 | |
647e52ea SG |
2814 | if (b->thread != -1) |
2815 | { | |
2816 | /* FIXME should make an annotation for this */ | |
2817 | printf_filtered ("\tstop only in thread %d\n", b->thread); | |
2818 | } | |
2819 | ||
9f577285 SS |
2820 | if (show_breakpoint_hit_counts && b->hit_count) |
2821 | { | |
2822 | /* FIXME should make an annotation for this */ | |
65b07ddc DT |
2823 | if (ep_is_catchpoint (b)) |
2824 | printf_filtered ("\tcatchpoint"); | |
2825 | else | |
2826 | printf_filtered ("\tbreakpoint"); | |
2827 | printf_filtered (" already hit %d time%s\n", | |
2828 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
9f577285 SS |
2829 | } |
2830 | ||
bd5635a1 | 2831 | if (b->ignore_count) |
47ebe8fd | 2832 | { |
f2d9c058 | 2833 | annotate_field (8); |
47ebe8fd JK |
2834 | |
2835 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
2836 | } | |
2837 | ||
bd5635a1 | 2838 | if ((l = b->commands)) |
47ebe8fd | 2839 | { |
f2d9c058 | 2840 | annotate_field (9); |
47ebe8fd JK |
2841 | |
2842 | while (l) | |
2843 | { | |
0f8cdd9b | 2844 | print_command_line (l, 4); |
47ebe8fd JK |
2845 | l = l->next; |
2846 | } | |
2847 | } | |
bd5635a1 RP |
2848 | } |
2849 | ||
fee933f1 RP |
2850 | if (!found_a_breakpoint) |
2851 | { | |
2852 | if (bnum == -1) | |
2853 | printf_filtered ("No breakpoints or watchpoints.\n"); | |
2854 | else | |
2855 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); | |
2856 | } | |
30875e1c SG |
2857 | else |
2858 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
2859 | that a comparison of an unsigned with -1 is always false. */ | |
2860 | if (last_addr != (CORE_ADDR)-1) | |
2861 | set_next_address (last_addr); | |
47ebe8fd | 2862 | |
f2d9c058 | 2863 | annotate_breakpoints_table_end (); |
bd5635a1 RP |
2864 | } |
2865 | ||
bdbd5f50 | 2866 | /* ARGSUSED */ |
bd5635a1 RP |
2867 | static void |
2868 | breakpoints_info (bnum_exp, from_tty) | |
2869 | char *bnum_exp; | |
2870 | int from_tty; | |
2871 | { | |
2872 | int bnum = -1; | |
2873 | ||
2874 | if (bnum_exp) | |
2875 | bnum = parse_and_eval_address (bnum_exp); | |
2876 | ||
c8950965 | 2877 | breakpoint_1 (bnum, 0); |
80ba48f5 SG |
2878 | } |
2879 | ||
9b280a7f JG |
2880 | #if MAINTENANCE_CMDS |
2881 | ||
80ba48f5 | 2882 | /* ARGSUSED */ |
65b07ddc | 2883 | void |
9b280a7f | 2884 | maintenance_info_breakpoints (bnum_exp, from_tty) |
80ba48f5 SG |
2885 | char *bnum_exp; |
2886 | int from_tty; | |
2887 | { | |
2888 | int bnum = -1; | |
2889 | ||
2890 | if (bnum_exp) | |
2891 | bnum = parse_and_eval_address (bnum_exp); | |
2892 | ||
c8950965 | 2893 | breakpoint_1 (bnum, 1); |
bd5635a1 RP |
2894 | } |
2895 | ||
9b280a7f JG |
2896 | #endif |
2897 | ||
bd5635a1 RP |
2898 | /* Print a message describing any breakpoints set at PC. */ |
2899 | ||
2900 | static void | |
6b038bd9 DT |
2901 | describe_other_breakpoints (pc, section) |
2902 | CORE_ADDR pc; | |
2903 | asection *section; | |
bd5635a1 RP |
2904 | { |
2905 | register int others = 0; | |
2906 | register struct breakpoint *b; | |
2907 | ||
2908 | ALL_BREAKPOINTS (b) | |
2909 | if (b->address == pc) | |
6b038bd9 DT |
2910 | if (overlay_debugging == 0 || |
2911 | b->section == section) | |
2912 | others++; | |
bd5635a1 RP |
2913 | if (others > 0) |
2914 | { | |
833e0d94 | 2915 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); |
bd5635a1 RP |
2916 | ALL_BREAKPOINTS (b) |
2917 | if (b->address == pc) | |
6b038bd9 DT |
2918 | if (overlay_debugging == 0 || |
2919 | b->section == section) | |
2920 | { | |
2921 | others--; | |
2922 | printf_filtered | |
2923 | ("%d%s%s ", | |
2924 | b->number, | |
65b07ddc | 2925 | ((b->enable == disabled || b->enable == shlib_disabled || b->enable == call_disabled) |
6b038bd9 DT |
2926 | ? " (disabled)" : ""), |
2927 | (others > 1) ? "," : ((others == 1) ? " and" : "")); | |
2928 | } | |
833e0d94 | 2929 | printf_filtered ("also set at pc "); |
d24c0599 | 2930 | print_address_numeric (pc, 1, gdb_stdout); |
833e0d94 | 2931 | printf_filtered (".\n"); |
bd5635a1 RP |
2932 | } |
2933 | } | |
2934 | \f | |
2935 | /* Set the default place to put a breakpoint | |
2936 | for the `break' command with no arguments. */ | |
2937 | ||
2938 | void | |
2939 | set_default_breakpoint (valid, addr, symtab, line) | |
2940 | int valid; | |
2941 | CORE_ADDR addr; | |
2942 | struct symtab *symtab; | |
2943 | int line; | |
2944 | { | |
2945 | default_breakpoint_valid = valid; | |
2946 | default_breakpoint_address = addr; | |
2947 | default_breakpoint_symtab = symtab; | |
2948 | default_breakpoint_line = line; | |
2949 | } | |
2950 | ||
2951 | /* Rescan breakpoints at address ADDRESS, | |
2952 | marking the first one as "first" and any others as "duplicates". | |
2953 | This is so that the bpt instruction is only inserted once. */ | |
2954 | ||
2955 | static void | |
6b038bd9 | 2956 | check_duplicates (address, section) |
bd5635a1 | 2957 | CORE_ADDR address; |
6b038bd9 | 2958 | asection *section; |
bd5635a1 RP |
2959 | { |
2960 | register struct breakpoint *b; | |
2961 | register int count = 0; | |
2962 | ||
30875e1c | 2963 | if (address == 0) /* Watchpoints are uninteresting */ |
f266e564 JK |
2964 | return; |
2965 | ||
bd5635a1 | 2966 | ALL_BREAKPOINTS (b) |
fa3764e2 JL |
2967 | if (b->enable != disabled |
2968 | && b->enable != shlib_disabled | |
65b07ddc | 2969 | && b->enable != call_disabled |
6b038bd9 DT |
2970 | && b->address == address |
2971 | && (overlay_debugging == 0 || b->section == section)) | |
bd5635a1 RP |
2972 | { |
2973 | count++; | |
2974 | b->duplicate = count > 1; | |
2975 | } | |
2976 | } | |
2977 | ||
2978 | /* Low level routine to set a breakpoint. | |
2979 | Takes as args the three things that every breakpoint must have. | |
2980 | Returns the breakpoint object so caller can set other things. | |
2981 | Does not set the breakpoint number! | |
f266e564 JK |
2982 | Does not print anything. |
2983 | ||
2984 | ==> This routine should not be called if there is a chance of later | |
2985 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
2986 | your arguments BEFORE calling this routine! */ | |
bd5635a1 | 2987 | |
895cc8ab | 2988 | struct breakpoint * |
bd5635a1 RP |
2989 | set_raw_breakpoint (sal) |
2990 | struct symtab_and_line sal; | |
2991 | { | |
2992 | register struct breakpoint *b, *b1; | |
2993 | ||
2994 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4ed3a9ea | 2995 | memset (b, 0, sizeof (*b)); |
bd5635a1 | 2996 | b->address = sal.pc; |
d889f6b7 JK |
2997 | if (sal.symtab == NULL) |
2998 | b->source_file = NULL; | |
2999 | else | |
3000 | b->source_file = savestring (sal.symtab->filename, | |
3001 | strlen (sal.symtab->filename)); | |
6b038bd9 | 3002 | b->section = sal.section; |
706dc3ce JL |
3003 | b->language = current_language->la_language; |
3004 | b->input_radix = input_radix; | |
199b2450 | 3005 | b->thread = -1; |
bd5635a1 RP |
3006 | b->line_number = sal.line; |
3007 | b->enable = enabled; | |
3008 | b->next = 0; | |
3009 | b->silent = 0; | |
3010 | b->ignore_count = 0; | |
3011 | b->commands = NULL; | |
30875e1c | 3012 | b->frame = 0; |
65b07ddc DT |
3013 | b->dll_pathname = NULL; |
3014 | b->triggered_dll_pathname = NULL; | |
3015 | b->forked_inferior_pid = 0; | |
3016 | b->exec_pathname = NULL; | |
bd5635a1 RP |
3017 | |
3018 | /* Add this breakpoint to the end of the chain | |
3019 | so that a list of breakpoints will come out in order | |
3020 | of increasing numbers. */ | |
3021 | ||
3022 | b1 = breakpoint_chain; | |
3023 | if (b1 == 0) | |
3024 | breakpoint_chain = b; | |
3025 | else | |
3026 | { | |
3027 | while (b1->next) | |
3028 | b1 = b1->next; | |
3029 | b1->next = b; | |
3030 | } | |
3031 | ||
6b038bd9 | 3032 | check_duplicates (sal.pc, sal.section); |
6c803036 | 3033 | breakpoints_changed (); |
bd5635a1 RP |
3034 | |
3035 | return b; | |
3036 | } | |
3037 | ||
39ce6829 PS |
3038 | #ifdef GET_LONGJMP_TARGET |
3039 | ||
30875e1c | 3040 | static void |
cd10c7e3 | 3041 | create_longjmp_breakpoint (func_name) |
30875e1c | 3042 | char *func_name; |
30875e1c | 3043 | { |
30875e1c SG |
3044 | struct symtab_and_line sal; |
3045 | struct breakpoint *b; | |
3046 | ||
6b038bd9 | 3047 | INIT_SAL (&sal); /* initialize to zeroes */ |
30875e1c SG |
3048 | if (func_name != NULL) |
3049 | { | |
3050 | struct minimal_symbol *m; | |
3051 | ||
e8bf33c4 | 3052 | m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *)NULL); |
30875e1c | 3053 | if (m) |
2d313932 | 3054 | sal.pc = SYMBOL_VALUE_ADDRESS (m); |
30875e1c SG |
3055 | else |
3056 | return; | |
3057 | } | |
6b038bd9 | 3058 | sal.section = find_pc_overlay (sal.pc); |
cd10c7e3 | 3059 | b = set_raw_breakpoint (sal); |
30875e1c SG |
3060 | if (!b) return; |
3061 | ||
80ba48f5 | 3062 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; |
30875e1c SG |
3063 | b->disposition = donttouch; |
3064 | b->enable = disabled; | |
3065 | b->silent = 1; | |
80ba48f5 SG |
3066 | if (func_name) |
3067 | b->addr_string = strsave(func_name); | |
3068 | b->number = internal_breakpoint_number--; | |
30875e1c | 3069 | } |
30875e1c | 3070 | |
39ce6829 PS |
3071 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
3072 | ||
30875e1c SG |
3073 | /* Call this routine when stepping and nexting to enable a breakpoint if we do |
3074 | a longjmp(). When we hit that breakpoint, call | |
3075 | set_longjmp_resume_breakpoint() to figure out where we are going. */ | |
3076 | ||
3077 | void | |
3078 | enable_longjmp_breakpoint() | |
3079 | { | |
80ba48f5 SG |
3080 | register struct breakpoint *b; |
3081 | ||
3082 | ALL_BREAKPOINTS (b) | |
3083 | if (b->type == bp_longjmp) | |
9b280a7f JG |
3084 | { |
3085 | b->enable = enabled; | |
6b038bd9 | 3086 | check_duplicates (b->address, b->section); |
9b280a7f | 3087 | } |
30875e1c SG |
3088 | } |
3089 | ||
3090 | void | |
3091 | disable_longjmp_breakpoint() | |
3092 | { | |
80ba48f5 SG |
3093 | register struct breakpoint *b; |
3094 | ||
3095 | ALL_BREAKPOINTS (b) | |
9b280a7f | 3096 | if ( b->type == bp_longjmp |
80ba48f5 | 3097 | || b->type == bp_longjmp_resume) |
9b280a7f JG |
3098 | { |
3099 | b->enable = disabled; | |
6b038bd9 | 3100 | check_duplicates (b->address, b->section); |
9b280a7f | 3101 | } |
30875e1c SG |
3102 | } |
3103 | ||
27b6a1fa JL |
3104 | #ifdef SOLIB_ADD |
3105 | void | |
3106 | remove_solib_event_breakpoints () | |
3107 | { | |
fa3764e2 | 3108 | register struct breakpoint *b, *temp; |
27b6a1fa | 3109 | |
fa3764e2 | 3110 | ALL_BREAKPOINTS_SAFE (b, temp) |
27b6a1fa JL |
3111 | if (b->type == bp_shlib_event) |
3112 | delete_breakpoint (b); | |
3113 | } | |
3114 | ||
3115 | void | |
3116 | create_solib_event_breakpoint (address) | |
3117 | CORE_ADDR address; | |
3118 | { | |
3119 | struct breakpoint *b; | |
3120 | struct symtab_and_line sal; | |
3121 | ||
6b038bd9 | 3122 | INIT_SAL (&sal); /* initialize to zeroes */ |
27b6a1fa | 3123 | sal.pc = address; |
6b038bd9 | 3124 | sal.section = find_pc_overlay (sal.pc); |
27b6a1fa JL |
3125 | b = set_raw_breakpoint (sal); |
3126 | b->number = internal_breakpoint_number--; | |
3127 | b->disposition = donttouch; | |
3128 | b->type = bp_shlib_event; | |
3129 | } | |
fa3764e2 | 3130 | |
65b07ddc DT |
3131 | void |
3132 | disable_breakpoints_in_shlibs () | |
3133 | { | |
3134 | struct breakpoint * b; | |
3135 | int disabled_shlib_breaks = 0; | |
3136 | ||
3137 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
3138 | ALL_BREAKPOINTS (b) | |
3139 | { | |
3140 | #if defined (PC_SOLIB) | |
3141 | if (((b->type == bp_breakpoint) || | |
3142 | (b->type == bp_hardware_breakpoint)) && | |
3143 | (b->enable != shlib_disabled) && | |
3144 | (b->enable != call_disabled) && | |
3145 | ! b->duplicate && | |
3146 | PC_SOLIB (b->address)) | |
3147 | { | |
3148 | b->enable = shlib_disabled; | |
3149 | if (!disabled_shlib_breaks) | |
3150 | { | |
3151 | target_terminal_ours_for_output (); | |
3152 | printf_filtered ("Temporarily disabling shared library breakpoints:\n"); | |
3153 | } | |
3154 | disabled_shlib_breaks = 1; | |
3155 | printf_filtered ("%d ", b->number); | |
3156 | } | |
3157 | #endif | |
3158 | } | |
3159 | if (disabled_shlib_breaks) | |
3160 | printf_filtered ("\n"); | |
3161 | } | |
3162 | ||
fa3764e2 JL |
3163 | /* Try to reenable any breakpoints in shared libraries. */ |
3164 | void | |
3165 | re_enable_breakpoints_in_shlibs () | |
3166 | { | |
3167 | struct breakpoint *b; | |
3168 | ||
65b07ddc DT |
3169 | ALL_BREAKPOINTS (b) |
3170 | if (b->enable == shlib_disabled) | |
3171 | { | |
3172 | char buf[1]; | |
3173 | ||
3174 | /* Do not reenable the breakpoint if the shared library | |
3175 | is still not mapped in. */ | |
3176 | if (target_read_memory (b->address, buf, 1) == 0) | |
3177 | b->enable = enabled; | |
3178 | } | |
3179 | } | |
3180 | ||
3181 | #endif | |
3182 | ||
3183 | static void | |
3184 | create_solib_load_unload_event_breakpoint (hookname, tempflag, dll_pathname, cond_string, bp_kind) | |
3185 | char * hookname; | |
3186 | int tempflag; | |
3187 | char * dll_pathname; | |
3188 | char * cond_string; | |
3189 | enum bptype bp_kind; | |
3190 | { | |
3191 | struct breakpoint * b; | |
3192 | struct symtabs_and_lines sals; | |
3193 | struct symtab_and_line sal; | |
3194 | struct cleanup * old_chain; | |
3195 | struct cleanup * canonical_strings_chain = NULL; | |
3196 | int i; | |
3197 | char * addr_start = hookname; | |
3198 | char * addr_end = NULL; | |
3199 | char ** canonical = (char **) NULL; | |
3200 | int thread = -1; /* All threads. */ | |
3201 | ||
3202 | /* Set a breakpoint on the specified hook. */ | |
3203 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
3204 | addr_end = hookname; | |
3205 | ||
3206 | if (sals.nelts == 0) | |
3207 | { | |
3208 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
3209 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
3210 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
3211 | return; | |
3212 | } | |
3213 | if (sals.nelts != 1) | |
3214 | { | |
3215 | warning ("Unable to set a unique breakpoint on dynamic linker callback."); | |
3216 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
3217 | return; | |
3218 | } | |
3219 | ||
3220 | /* Make sure that all storage allocated in decode_line_1 gets freed in case | |
3221 | the following errors out. */ | |
3222 | old_chain = make_cleanup (free, sals.sals); | |
3223 | if (canonical != (char **)NULL) | |
3224 | { | |
3225 | make_cleanup (free, canonical); | |
3226 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
3227 | if (canonical[0] != NULL) | |
3228 | make_cleanup (free, canonical[0]); | |
3229 | } | |
3230 | ||
3231 | resolve_sal_pc (&sals.sals[0]); | |
3232 | ||
3233 | /* Remove the canonical strings from the cleanup, they are needed below. */ | |
3234 | if (canonical != (char **)NULL) | |
3235 | discard_cleanups (canonical_strings_chain); | |
3236 | ||
3237 | b = set_raw_breakpoint (sals.sals[0]); | |
3238 | set_breakpoint_count (breakpoint_count + 1); | |
3239 | b->number = breakpoint_count; | |
3240 | b->cond = NULL; | |
3241 | b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string)); | |
3242 | b->thread = thread; | |
3243 | ||
3244 | if (canonical != (char **)NULL && canonical[0] != NULL) | |
3245 | b->addr_string = canonical[0]; | |
3246 | else if (addr_start) | |
3247 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
3248 | ||
3249 | b->enable = enabled; | |
3250 | b->disposition = tempflag ? del : donttouch; | |
3251 | ||
3252 | if (dll_pathname == NULL) | |
3253 | b->dll_pathname = NULL; | |
3254 | else | |
3255 | { | |
3256 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
3257 | strcpy (b->dll_pathname, dll_pathname); | |
3258 | } | |
3259 | b->type = bp_kind; | |
3260 | ||
3261 | mention (b); | |
3262 | do_cleanups (old_chain); | |
3263 | } | |
3264 | ||
3265 | void | |
3266 | create_solib_load_event_breakpoint (hookname, tempflag, dll_pathname, cond_string) | |
3267 | char * hookname; | |
3268 | int tempflag; | |
3269 | char * dll_pathname; | |
3270 | char * cond_string; | |
3271 | { | |
3272 | create_solib_load_unload_event_breakpoint (hookname, | |
3273 | tempflag, | |
3274 | dll_pathname, | |
3275 | cond_string, | |
3276 | bp_catch_load); | |
3277 | } | |
3278 | ||
3279 | void | |
3280 | create_solib_unload_event_breakpoint (hookname, tempflag, dll_pathname, cond_string) | |
3281 | char * hookname; | |
3282 | int tempflag; | |
3283 | char * dll_pathname; | |
3284 | char * cond_string; | |
3285 | { | |
3286 | create_solib_load_unload_event_breakpoint (hookname, | |
3287 | tempflag, | |
3288 | dll_pathname, | |
3289 | cond_string, | |
3290 | bp_catch_unload); | |
3291 | } | |
3292 | ||
3293 | static void | |
3294 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind) | |
3295 | int tempflag; | |
3296 | char * cond_string; | |
3297 | enum bptype bp_kind; | |
3298 | { | |
3299 | struct symtab_and_line sal; | |
3300 | struct breakpoint * b; | |
3301 | int thread = -1; /* All threads. */ | |
3302 | ||
3303 | INIT_SAL(&sal); | |
3304 | sal.pc = 0; | |
3305 | sal.symtab = NULL; | |
3306 | sal.line = 0; | |
3307 | ||
3308 | b = set_raw_breakpoint (sal); | |
3309 | set_breakpoint_count (breakpoint_count + 1); | |
3310 | b->number = breakpoint_count; | |
3311 | b->cond = NULL; | |
3312 | b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string)); | |
3313 | b->thread = thread; | |
3314 | b->addr_string = NULL; | |
3315 | b->enable = enabled; | |
3316 | b->disposition = tempflag ? del : donttouch; | |
3317 | b->forked_inferior_pid = 0; | |
3318 | ||
3319 | b->type = bp_kind; | |
3320 | ||
3321 | mention (b); | |
3322 | } | |
3323 | ||
3324 | void | |
3325 | create_fork_event_catchpoint (tempflag, cond_string) | |
3326 | int tempflag; | |
3327 | char * cond_string; | |
3328 | { | |
3329 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
3330 | } | |
3331 | ||
3332 | void | |
3333 | create_vfork_event_catchpoint (tempflag, cond_string) | |
3334 | int tempflag; | |
3335 | char * cond_string; | |
3336 | { | |
3337 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
3338 | } | |
3339 | ||
3340 | void | |
3341 | create_exec_event_catchpoint (tempflag, cond_string) | |
3342 | int tempflag; | |
3343 | char * cond_string; | |
3344 | { | |
3345 | struct symtab_and_line sal; | |
3346 | struct breakpoint * b; | |
3347 | int thread = -1; /* All threads. */ | |
3348 | ||
3349 | INIT_SAL(&sal); | |
3350 | sal.pc = 0; | |
3351 | sal.symtab = NULL; | |
3352 | sal.line = 0; | |
3353 | ||
3354 | b = set_raw_breakpoint (sal); | |
3355 | set_breakpoint_count (breakpoint_count + 1); | |
3356 | b->number = breakpoint_count; | |
3357 | b->cond = NULL; | |
3358 | b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string)); | |
3359 | b->thread = thread; | |
3360 | b->addr_string = NULL; | |
3361 | b->enable = enabled; | |
3362 | b->disposition = tempflag ? del : donttouch; | |
3363 | ||
3364 | b->type = bp_catch_exec; | |
fa3764e2 | 3365 | |
65b07ddc | 3366 | mention (b); |
fa3764e2 JL |
3367 | } |
3368 | ||
b607efe7 | 3369 | static int |
11054881 KH |
3370 | hw_breakpoint_used_count() |
3371 | { | |
3372 | register struct breakpoint *b; | |
3373 | int i = 0; | |
3374 | ||
3375 | ALL_BREAKPOINTS (b) | |
3376 | { | |
3377 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
3378 | i++; | |
3379 | } | |
3380 | ||
3381 | return i; | |
3382 | } | |
3383 | ||
b607efe7 | 3384 | static int |
11054881 KH |
3385 | hw_watchpoint_used_count(type, other_type_used) |
3386 | enum bptype type; | |
3387 | int *other_type_used; | |
3388 | { | |
3389 | register struct breakpoint *b; | |
3390 | int i = 0; | |
3391 | ||
3392 | *other_type_used = 0; | |
3393 | ALL_BREAKPOINTS (b) | |
3394 | { | |
3395 | if (b->enable == enabled) | |
3396 | { | |
3397 | if (b->type == type) i++; | |
3398 | else if ((b->type == bp_hardware_watchpoint || | |
3399 | b->type == bp_read_watchpoint || | |
3400 | b->type == bp_access_watchpoint) | |
3401 | && b->enable == enabled) | |
3402 | *other_type_used = 1; | |
3403 | } | |
3404 | } | |
3405 | return i; | |
3406 | } | |
3407 | ||
30875e1c SG |
3408 | /* Call this after hitting the longjmp() breakpoint. Use this to set a new |
3409 | breakpoint at the target of the jmp_buf. | |
80ba48f5 SG |
3410 | |
3411 | FIXME - This ought to be done by setting a temporary breakpoint that gets | |
65b07ddc | 3412 | deleted automatically... */ |
30875e1c SG |
3413 | |
3414 | void | |
3415 | set_longjmp_resume_breakpoint(pc, frame) | |
3416 | CORE_ADDR pc; | |
706dc3ce | 3417 | struct frame_info *frame; |
30875e1c | 3418 | { |
80ba48f5 SG |
3419 | register struct breakpoint *b; |
3420 | ||
3421 | ALL_BREAKPOINTS (b) | |
3422 | if (b->type == bp_longjmp_resume) | |
3423 | { | |
3424 | b->address = pc; | |
3425 | b->enable = enabled; | |
3426 | if (frame != NULL) | |
706dc3ce | 3427 | b->frame = frame->frame; |
80ba48f5 SG |
3428 | else |
3429 | b->frame = 0; | |
6b038bd9 | 3430 | check_duplicates (b->address, b->section); |
80ba48f5 SG |
3431 | return; |
3432 | } | |
30875e1c SG |
3433 | } |
3434 | ||
65b07ddc DT |
3435 | void |
3436 | disable_watchpoints_before_interactive_call_start () | |
3437 | { | |
3438 | struct breakpoint * b; | |
3439 | ||
3440 | ALL_BREAKPOINTS (b) | |
3441 | { | |
3442 | if (((b->type == bp_watchpoint) | |
3443 | || (b->type == bp_hardware_watchpoint) | |
3444 | || (b->type == bp_read_watchpoint) | |
3445 | || (b->type == bp_access_watchpoint) | |
3446 | || ep_is_exception_catchpoint (b)) | |
3447 | && (b->enable == enabled)) | |
3448 | { | |
3449 | b->enable = call_disabled; | |
3450 | check_duplicates (b->address, b->section); | |
3451 | } | |
3452 | } | |
3453 | } | |
3454 | ||
3455 | void | |
3456 | enable_watchpoints_after_interactive_call_stop () | |
3457 | { | |
3458 | struct breakpoint * b; | |
3459 | ||
3460 | ALL_BREAKPOINTS (b) | |
3461 | { | |
3462 | if (((b->type == bp_watchpoint) | |
3463 | || (b->type == bp_hardware_watchpoint) | |
3464 | || (b->type == bp_read_watchpoint) | |
3465 | || (b->type == bp_access_watchpoint) | |
3466 | || ep_is_exception_catchpoint (b)) | |
3467 | && (b->enable == call_disabled)) | |
3468 | { | |
3469 | b->enable = enabled; | |
3470 | check_duplicates (b->address, b->section); | |
3471 | } | |
3472 | } | |
3473 | } | |
3474 | ||
3475 | ||
bd5635a1 RP |
3476 | /* Set a breakpoint that will evaporate an end of command |
3477 | at address specified by SAL. | |
3478 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
3479 | ||
30875e1c SG |
3480 | struct breakpoint * |
3481 | set_momentary_breakpoint (sal, frame, type) | |
bd5635a1 | 3482 | struct symtab_and_line sal; |
706dc3ce | 3483 | struct frame_info *frame; |
30875e1c | 3484 | enum bptype type; |
bd5635a1 RP |
3485 | { |
3486 | register struct breakpoint *b; | |
3487 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
3488 | b->type = type; |
3489 | b->enable = enabled; | |
3490 | b->disposition = donttouch; | |
706dc3ce | 3491 | b->frame = (frame ? frame->frame : 0); |
2b576293 C |
3492 | |
3493 | /* If we're debugging a multi-threaded program, then we | |
3494 | want momentary breakpoints to be active in only a | |
3495 | single thread of control. */ | |
3496 | if (in_thread_list (inferior_pid)) | |
3497 | b->thread = pid_to_thread_id (inferior_pid); | |
3498 | ||
30875e1c | 3499 | return b; |
bd5635a1 RP |
3500 | } |
3501 | ||
bd5635a1 RP |
3502 | \f |
3503 | /* Tell the user we have just set a breakpoint B. */ | |
9f577285 | 3504 | |
bd5635a1 RP |
3505 | static void |
3506 | mention (b) | |
3507 | struct breakpoint *b; | |
3508 | { | |
9f577285 SS |
3509 | int say_where = 0; |
3510 | ||
d2a85f11 JMD |
3511 | /* FIXME: This is misplaced; mention() is called by things (like hitting a |
3512 | watchpoint) other than breakpoint creation. It should be possible to | |
3513 | clean this up and at the same time replace the random calls to | |
3514 | breakpoint_changed with this hook, as has already been done for | |
3515 | delete_breakpoint_hook and so on. */ | |
754e5da2 SG |
3516 | if (create_breakpoint_hook) |
3517 | create_breakpoint_hook (b); | |
3518 | ||
30875e1c | 3519 | switch (b->type) |
bd5635a1 | 3520 | { |
65b07ddc DT |
3521 | case bp_none: |
3522 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
3523 | break; | |
30875e1c | 3524 | case bp_watchpoint: |
bd5635a1 | 3525 | printf_filtered ("Watchpoint %d: ", b->number); |
199b2450 | 3526 | print_expression (b->exp, gdb_stdout); |
30875e1c | 3527 | break; |
999dd04b JL |
3528 | case bp_hardware_watchpoint: |
3529 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
3530 | print_expression (b->exp, gdb_stdout); | |
3531 | break; | |
11054881 KH |
3532 | case bp_read_watchpoint: |
3533 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
3534 | print_expression (b->exp, gdb_stdout); | |
3535 | break; | |
3536 | case bp_access_watchpoint: | |
65b07ddc | 3537 | printf_filtered ("Hardware access (read/write) watchpoint %d: ",b->number); |
11054881 KH |
3538 | print_expression (b->exp, gdb_stdout); |
3539 | break; | |
30875e1c | 3540 | case bp_breakpoint: |
9f577285 SS |
3541 | printf_filtered ("Breakpoint %d", b->number); |
3542 | say_where = 1; | |
51b57ded | 3543 | break; |
11054881 | 3544 | case bp_hardware_breakpoint: |
9f577285 SS |
3545 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
3546 | say_where = 1; | |
11054881 | 3547 | break; |
65b07ddc DT |
3548 | case bp_catch_load: |
3549 | case bp_catch_unload: | |
3550 | printf_filtered ("Catchpoint %d (%s %s)", | |
3551 | b->number, | |
3552 | (b->type == bp_catch_load) ? "load" : "unload", | |
3553 | (b->dll_pathname != NULL) ? b->dll_pathname : "<any library>"); | |
3554 | break; | |
3555 | case bp_catch_fork: | |
3556 | case bp_catch_vfork: | |
3557 | printf_filtered ("Catchpoint %d (%s)", | |
3558 | b->number, | |
3559 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
3560 | break; | |
3561 | case bp_catch_exec: | |
3562 | printf_filtered ("Catchpoint %d (exec)", | |
3563 | b->number); | |
3564 | break; | |
3565 | case bp_catch_catch: | |
3566 | case bp_catch_throw: | |
3567 | printf_filtered ("Catchpoint %d (%s)", | |
3568 | b->number, | |
3569 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
3570 | break; | |
3571 | ||
51b57ded FF |
3572 | case bp_until: |
3573 | case bp_finish: | |
3574 | case bp_longjmp: | |
3575 | case bp_longjmp_resume: | |
fee933f1 | 3576 | case bp_step_resume: |
bcc37718 | 3577 | case bp_through_sigtramp: |
199b2450 | 3578 | case bp_call_dummy: |
999dd04b | 3579 | case bp_watchpoint_scope: |
fa3764e2 | 3580 | case bp_shlib_event: |
51b57ded | 3581 | break; |
bd5635a1 | 3582 | } |
9f577285 SS |
3583 | if (say_where) |
3584 | { | |
3585 | if (addressprint || b->source_file == NULL) | |
3586 | { | |
3587 | printf_filtered (" at "); | |
3588 | print_address_numeric (b->address, 1, gdb_stdout); | |
3589 | } | |
3590 | if (b->source_file) | |
3591 | printf_filtered (": file %s, line %d.", | |
3592 | b->source_file, b->line_number); | |
65b07ddc DT |
3593 | TUIDO(((TuiOpaqueFuncPtr)tui_vAllSetHasBreakAt, b, 1)); |
3594 | TUIDO(((TuiOpaqueFuncPtr)tuiUpdateAllExecInfos)); | |
9f577285 | 3595 | } |
bd5635a1 RP |
3596 | printf_filtered ("\n"); |
3597 | } | |
3598 | ||
bd5635a1 RP |
3599 | \f |
3600 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
11054881 KH |
3601 | flag: first bit : 0 non-temporary, 1 temporary. |
3602 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
bd5635a1 RP |
3603 | |
3604 | static void | |
11054881 | 3605 | break_command_1 (arg, flag, from_tty) |
bd5635a1 | 3606 | char *arg; |
11054881 | 3607 | int flag, from_tty; |
bd5635a1 | 3608 | { |
11054881 | 3609 | int tempflag, hardwareflag; |
bd5635a1 RP |
3610 | struct symtabs_and_lines sals; |
3611 | struct symtab_and_line sal; | |
3612 | register struct expression *cond = 0; | |
3613 | register struct breakpoint *b; | |
3614 | ||
3615 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
3616 | char *cond_start = NULL; | |
fee933f1 | 3617 | char *cond_end = NULL; |
bd5635a1 RP |
3618 | /* Pointers in arg to the start, and one past the end, |
3619 | of the address part. */ | |
3620 | char *addr_start = NULL; | |
fee933f1 | 3621 | char *addr_end = NULL; |
d889f6b7 | 3622 | struct cleanup *old_chain; |
fee933f1 | 3623 | struct cleanup *canonical_strings_chain = NULL; |
d889f6b7 | 3624 | char **canonical = (char **)NULL; |
bd5635a1 | 3625 | int i; |
199b2450 | 3626 | int thread; |
bd5635a1 | 3627 | |
e8bf33c4 JK |
3628 | hardwareflag = flag & BP_HARDWAREFLAG; |
3629 | tempflag = flag & BP_TEMPFLAG; | |
11054881 | 3630 | |
bd5635a1 RP |
3631 | sals.sals = NULL; |
3632 | sals.nelts = 0; | |
3633 | ||
6b038bd9 | 3634 | INIT_SAL (&sal); /* initialize to zeroes */ |
bd5635a1 RP |
3635 | |
3636 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
3637 | ||
3638 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
3639 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
3640 | { | |
3641 | if (default_breakpoint_valid) | |
3642 | { | |
3643 | sals.sals = (struct symtab_and_line *) | |
3644 | xmalloc (sizeof (struct symtab_and_line)); | |
3645 | sal.pc = default_breakpoint_address; | |
3646 | sal.line = default_breakpoint_line; | |
3647 | sal.symtab = default_breakpoint_symtab; | |
6b038bd9 | 3648 | sal.section = find_pc_overlay (sal.pc); |
bd5635a1 RP |
3649 | sals.sals[0] = sal; |
3650 | sals.nelts = 1; | |
3651 | } | |
3652 | else | |
3653 | error ("No default breakpoint address now."); | |
3654 | } | |
3655 | else | |
3656 | { | |
3657 | addr_start = arg; | |
3658 | ||
3659 | /* Force almost all breakpoints to be in terms of the | |
3660 | current_source_symtab (which is decode_line_1's default). This | |
3661 | should produce the results we want almost all of the time while | |
3662 | leaving default_breakpoint_* alone. */ | |
3663 | if (default_breakpoint_valid | |
3664 | && (!current_source_symtab | |
3665 | || (arg && (*arg == '+' || *arg == '-')))) | |
3666 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 3667 | default_breakpoint_line, &canonical); |
bd5635a1 | 3668 | else |
d889f6b7 | 3669 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical); |
bd5635a1 RP |
3670 | |
3671 | addr_end = arg; | |
3672 | } | |
3673 | ||
3674 | if (! sals.nelts) | |
3675 | return; | |
3676 | ||
d889f6b7 JK |
3677 | /* Make sure that all storage allocated in decode_line_1 gets freed in case |
3678 | the following `for' loop errors out. */ | |
3679 | old_chain = make_cleanup (free, sals.sals); | |
3680 | if (canonical != (char **)NULL) | |
3681 | { | |
3682 | make_cleanup (free, canonical); | |
3683 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
3684 | for (i = 0; i < sals.nelts; i++) | |
3685 | { | |
3686 | if (canonical[i] != NULL) | |
3687 | make_cleanup (free, canonical[i]); | |
3688 | } | |
3689 | } | |
3690 | ||
199b2450 TL |
3691 | thread = -1; /* No specific thread yet */ |
3692 | ||
30875e1c SG |
3693 | /* Resolve all line numbers to PC's, and verify that conditions |
3694 | can be parsed, before setting any breakpoints. */ | |
bd5635a1 RP |
3695 | for (i = 0; i < sals.nelts; i++) |
3696 | { | |
199b2450 TL |
3697 | char *tok, *end_tok; |
3698 | int toklen; | |
3699 | ||
30875e1c | 3700 | resolve_sal_pc (&sals.sals[i]); |
65b07ddc DT |
3701 | |
3702 | /* It's possible for the PC to be nonzero, but still an illegal | |
3703 | value on some targets. | |
3704 | ||
3705 | For example, on HP-UX if you start gdb, and before running the | |
3706 | inferior you try to set a breakpoint on a shared library function | |
3707 | "foo" where the inferior doesn't call "foo" directly but does | |
3708 | pass its address to another function call, then we do find a | |
3709 | minimal symbol for the "foo", but it's address is invalid. | |
3710 | (Appears to be an index into a table that the loader sets up | |
3711 | when the inferior is run.) | |
3712 | ||
3713 | Give the target a chance to bless sals.sals[i].pc before we | |
3714 | try to make a breakpoint for it. */ | |
3715 | if (PC_REQUIRES_RUN_BEFORE_USE(sals.sals[i].pc)) | |
3716 | { | |
3717 | error ("Cannot break on %s without a running program.", addr_start); | |
3718 | } | |
bd5635a1 | 3719 | |
199b2450 TL |
3720 | tok = arg; |
3721 | ||
3722 | while (tok && *tok) | |
bd5635a1 | 3723 | { |
199b2450 TL |
3724 | while (*tok == ' ' || *tok == '\t') |
3725 | tok++; | |
3726 | ||
3727 | end_tok = tok; | |
3728 | ||
3729 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
3730 | end_tok++; | |
3731 | ||
3732 | toklen = end_tok - tok; | |
3733 | ||
3734 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
3735 | { | |
3736 | tok = cond_start = end_tok + 1; | |
3737 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
3738 | cond_end = tok; | |
3739 | } | |
3740 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
bd5635a1 | 3741 | { |
199b2450 TL |
3742 | char *tmptok; |
3743 | ||
3744 | tok = end_tok + 1; | |
3745 | tmptok = tok; | |
3746 | thread = strtol (tok, &tok, 0); | |
3747 | if (tok == tmptok) | |
3748 | error ("Junk after thread keyword."); | |
3749 | if (!valid_thread_id (thread)) | |
3750 | error ("Unknown thread %d\n", thread); | |
bd5635a1 RP |
3751 | } |
3752 | else | |
3753 | error ("Junk at end of arguments."); | |
3754 | } | |
bd5635a1 | 3755 | } |
11054881 KH |
3756 | if (hardwareflag) |
3757 | { | |
557f3a0e SS |
3758 | int i, target_resources_ok; |
3759 | ||
3760 | i = hw_breakpoint_used_count (); | |
3761 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
3762 | bp_hardware_breakpoint, i + sals.nelts, 0); | |
11054881 KH |
3763 | if (target_resources_ok == 0) |
3764 | error ("No hardware breakpoint support in the target."); | |
3765 | else if (target_resources_ok < 0) | |
3766 | error ("Hardware breakpoints used exceeds limit."); | |
3767 | } | |
bd5635a1 | 3768 | |
d889f6b7 JK |
3769 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
3770 | if (canonical != (char **)NULL) | |
3771 | discard_cleanups (canonical_strings_chain); | |
3772 | ||
30875e1c | 3773 | /* Now set all the breakpoints. */ |
bd5635a1 RP |
3774 | for (i = 0; i < sals.nelts; i++) |
3775 | { | |
3776 | sal = sals.sals[i]; | |
3777 | ||
3778 | if (from_tty) | |
6b038bd9 | 3779 | describe_other_breakpoints (sal.pc, sal.section); |
bd5635a1 RP |
3780 | |
3781 | b = set_raw_breakpoint (sal); | |
3782 | set_breakpoint_count (breakpoint_count + 1); | |
3783 | b->number = breakpoint_count; | |
11054881 | 3784 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; |
bd5635a1 | 3785 | b->cond = cond; |
199b2450 | 3786 | b->thread = thread; |
0a97f6c4 | 3787 | |
d889f6b7 JK |
3788 | /* If a canonical line spec is needed use that instead of the |
3789 | command string. */ | |
3790 | if (canonical != (char **)NULL && canonical[i] != NULL) | |
3791 | b->addr_string = canonical[i]; | |
3792 | else if (addr_start) | |
bd5635a1 RP |
3793 | b->addr_string = savestring (addr_start, addr_end - addr_start); |
3794 | if (cond_start) | |
3795 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
3796 | ||
30875e1c | 3797 | b->enable = enabled; |
e8bf33c4 | 3798 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 RP |
3799 | mention (b); |
3800 | } | |
3801 | ||
3802 | if (sals.nelts > 1) | |
3803 | { | |
833e0d94 JK |
3804 | printf_filtered ("Multiple breakpoints were set.\n"); |
3805 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 3806 | } |
d889f6b7 | 3807 | do_cleanups (old_chain); |
bd5635a1 RP |
3808 | } |
3809 | ||
65b07ddc DT |
3810 | static void |
3811 | break_at_finish_at_depth_command_1 (arg, flag, from_tty) | |
3812 | char *arg; | |
3813 | int flag; | |
3814 | int from_tty; | |
3815 | { | |
3816 | struct frame_info *frame; | |
3817 | CORE_ADDR low, high, selected_pc = 0; | |
3818 | char *extra_args, *level_arg, *addr_string; | |
3819 | int extra_args_len = 0, if_arg = 0; | |
3820 | ||
3821 | if (!arg || | |
3822 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
3823 | { | |
3824 | ||
3825 | if (default_breakpoint_valid) | |
3826 | { | |
3827 | if (selected_frame) | |
3828 | { | |
3829 | selected_pc = selected_frame->pc; | |
3830 | if (arg) | |
3831 | if_arg = 1; | |
3832 | } | |
3833 | else | |
3834 | error ("No selected frame."); | |
3835 | } | |
3836 | else | |
3837 | error ("No default breakpoint address now."); | |
3838 | } | |
3839 | else | |
3840 | { | |
3841 | extra_args = strchr (arg, ' '); | |
3842 | if (extra_args) | |
3843 | { | |
3844 | extra_args++; | |
3845 | extra_args_len = strlen (extra_args); | |
3846 | level_arg = (char *) xmalloc (extra_args - arg); | |
3847 | strncpy (level_arg, arg, extra_args - arg - 1); | |
3848 | level_arg[extra_args - arg - 1] = '\0'; | |
3849 | } | |
3850 | else | |
3851 | { | |
3852 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
3853 | strcpy (level_arg, arg); | |
3854 | } | |
3855 | ||
3856 | frame = parse_frame_specification (level_arg); | |
3857 | if (frame) | |
3858 | selected_pc = frame->pc; | |
3859 | else | |
3860 | selected_pc = 0; | |
3861 | } | |
3862 | if (if_arg) | |
3863 | { | |
3864 | extra_args = arg; | |
3865 | extra_args_len = strlen (arg); | |
3866 | } | |
3867 | ||
3868 | if (selected_pc) | |
3869 | { | |
3870 | if (find_pc_partial_function(selected_pc, (char **)NULL, &low, &high)) | |
3871 | { | |
3872 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
3873 | if (extra_args_len) | |
3874 | sprintf (addr_string, "*0x%x %s", high, extra_args); | |
3875 | else | |
3876 | sprintf (addr_string, "*0x%x", high); | |
3877 | break_command_1 (addr_string, flag, from_tty); | |
3878 | free (addr_string); | |
3879 | } | |
3880 | else | |
3881 | error ("No function contains the specified address"); | |
3882 | } | |
3883 | else | |
3884 | error ("Unable to set breakpoint at procedure exit"); | |
3885 | } | |
3886 | ||
3887 | ||
3888 | static void | |
3889 | break_at_finish_command_1 (arg, flag, from_tty) | |
3890 | char *arg; | |
3891 | int flag; | |
3892 | int from_tty; | |
3893 | { | |
3894 | char *addr_string, *break_string, *beg_addr_string; | |
3895 | CORE_ADDR low, high; | |
3896 | struct symtabs_and_lines sals; | |
3897 | struct symtab_and_line sal; | |
3898 | struct cleanup *old_chain; | |
3899 | char *extra_args; | |
3900 | int extra_args_len = 0; | |
3901 | int i, if_arg = 0; | |
3902 | ||
3903 | if (!arg || | |
3904 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
3905 | { | |
3906 | if (default_breakpoint_valid) | |
3907 | { | |
3908 | if (selected_frame) | |
3909 | { | |
3910 | addr_string = (char *) xmalloc (15); | |
3911 | sprintf (addr_string, "*0x%x", selected_frame->pc); | |
3912 | if (arg) | |
3913 | if_arg = 1; | |
3914 | } | |
3915 | else | |
3916 | error ("No selected frame."); | |
3917 | } | |
3918 | else | |
3919 | error ("No default breakpoint address now."); | |
3920 | } | |
3921 | else | |
3922 | { | |
3923 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
3924 | strcpy (addr_string, arg); | |
3925 | } | |
3926 | ||
3927 | if (if_arg) | |
3928 | { | |
3929 | extra_args = arg; | |
3930 | extra_args_len = strlen (arg); | |
3931 | } | |
3932 | else | |
3933 | if (arg) | |
3934 | { | |
3935 | /* get the stuff after the function name or address */ | |
3936 | extra_args = strchr (arg, ' '); | |
3937 | if (extra_args) | |
3938 | { | |
3939 | extra_args++; | |
3940 | extra_args_len = strlen (extra_args); | |
3941 | } | |
3942 | } | |
3943 | ||
3944 | sals.sals = NULL; | |
3945 | sals.nelts = 0; | |
3946 | ||
3947 | beg_addr_string = addr_string; | |
3948 | sals = decode_line_1 (&addr_string, 1, (struct symtab *)NULL, 0, | |
3949 | (char ***)NULL); | |
3950 | ||
3951 | free (beg_addr_string); | |
3952 | old_chain = make_cleanup (free, sals.sals); | |
3953 | for (i = 0; (i < sals.nelts); i++) | |
3954 | { | |
3955 | sal = sals.sals[i]; | |
3956 | if (find_pc_partial_function (sal.pc, (char **)NULL, &low, &high)) | |
3957 | { | |
3958 | break_string = (char *) xmalloc (extra_args_len + 26); | |
3959 | if (extra_args_len) | |
3960 | sprintf (break_string, "*0x%x %s", high, extra_args); | |
3961 | else | |
3962 | sprintf (break_string, "*0x%x", high); | |
3963 | break_command_1 (break_string, flag, from_tty); | |
3964 | free(break_string); | |
3965 | } | |
3966 | else | |
3967 | error ("No function contains the specified address"); | |
3968 | } | |
3969 | if (sals.nelts > 1) | |
3970 | { | |
3971 | printf_filtered ("Multiple breakpoints were set.\n"); | |
3972 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
3973 | } | |
3974 | do_cleanups(old_chain); | |
3975 | } | |
3976 | ||
3977 | ||
30875e1c SG |
3978 | /* Helper function for break_command_1 and disassemble_command. */ |
3979 | ||
3980 | void | |
3981 | resolve_sal_pc (sal) | |
3982 | struct symtab_and_line *sal; | |
3983 | { | |
3984 | CORE_ADDR pc; | |
3985 | ||
6b038bd9 | 3986 | if (sal->pc == 0 && sal->symtab != NULL) |
30875e1c | 3987 | { |
895cc8ab | 3988 | if (!find_line_pc (sal->symtab, sal->line, &pc)) |
30875e1c SG |
3989 | error ("No line %d in file \"%s\".", |
3990 | sal->line, sal->symtab->filename); | |
3991 | sal->pc = pc; | |
3992 | } | |
6b038bd9 DT |
3993 | |
3994 | if (sal->section == 0 && sal->symtab != NULL) | |
3995 | { | |
3996 | struct blockvector *bv; | |
3997 | struct block *b; | |
3998 | struct symbol *sym; | |
3999 | int index; | |
4000 | ||
4001 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); | |
895cc8ab | 4002 | if (bv != NULL) |
6b038bd9 | 4003 | { |
895cc8ab KS |
4004 | b = BLOCKVECTOR_BLOCK (bv, index); |
4005 | sym = block_function (b); | |
4006 | if (sym != NULL) | |
4007 | { | |
4008 | fixup_symbol_section (sym, sal->symtab->objfile); | |
6ee2da94 FCE |
4009 | sal->section = SYMBOL_BFD_SECTION (sym); |
4010 | } | |
4011 | else | |
4012 | { | |
4013 | /* It really is worthwhile to have the section, so we'll just | |
4014 | have to look harder. This case can be executed if we have | |
4015 | line numbers but no functions (as can happen in assembly | |
4016 | source). */ | |
4017 | ||
4018 | struct minimal_symbol *msym; | |
4019 | ||
4020 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
4021 | if (msym) | |
4022 | sal->section = SYMBOL_BFD_SECTION (msym); | |
895cc8ab | 4023 | } |
6b038bd9 DT |
4024 | } |
4025 | } | |
30875e1c SG |
4026 | } |
4027 | ||
bd5635a1 RP |
4028 | void |
4029 | break_command (arg, from_tty) | |
4030 | char *arg; | |
4031 | int from_tty; | |
4032 | { | |
4033 | break_command_1 (arg, 0, from_tty); | |
4034 | } | |
4035 | ||
65b07ddc DT |
4036 | void |
4037 | break_at_finish_command (arg, from_tty) | |
4038 | char *arg; | |
4039 | int from_tty; | |
4040 | { | |
4041 | break_at_finish_command_1 (arg, 0, from_tty); | |
4042 | } | |
4043 | ||
4044 | void | |
4045 | break_at_finish_at_depth_command (arg, from_tty) | |
4046 | char *arg; | |
4047 | int from_tty; | |
4048 | { | |
4049 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
4050 | } | |
4051 | ||
4052 | void | |
bd5635a1 RP |
4053 | tbreak_command (arg, from_tty) |
4054 | char *arg; | |
4055 | int from_tty; | |
4056 | { | |
11054881 KH |
4057 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
4058 | } | |
4059 | ||
65b07ddc DT |
4060 | void |
4061 | tbreak_at_finish_command (arg, from_tty) | |
4062 | char *arg; | |
4063 | int from_tty; | |
4064 | { | |
4065 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
4066 | } | |
4067 | ||
11054881 KH |
4068 | static void |
4069 | hbreak_command (arg, from_tty) | |
4070 | char *arg; | |
4071 | int from_tty; | |
4072 | { | |
4073 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
4074 | } | |
4075 | ||
4076 | static void | |
4077 | thbreak_command (arg, from_tty) | |
4078 | char *arg; | |
4079 | int from_tty; | |
4080 | { | |
4081 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
bd5635a1 RP |
4082 | } |
4083 | ||
65b07ddc DT |
4084 | static void |
4085 | stop_command (arg, from_tty) | |
4086 | char *arg; | |
4087 | int from_tty; | |
4088 | { | |
4089 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
4090 | Usage: stop in <function | address>\n\ | |
4091 | stop at <line>\n"); | |
4092 | } | |
4093 | ||
4094 | static void | |
4095 | stopin_command (arg, from_tty) | |
4096 | char *arg; | |
4097 | int from_tty; | |
4098 | { | |
4099 | int badInput = 0; | |
4100 | ||
4101 | if (arg == (char *)NULL) | |
4102 | badInput = 1; | |
4103 | else if (*arg != '*') | |
4104 | { | |
4105 | char *argptr = arg; | |
4106 | int hasColon = 0; | |
4107 | ||
4108 | /* look for a ':'. If this is a line number specification, then say | |
4109 | it is bad, otherwise, it should be an address or function/method | |
4110 | name */ | |
4111 | while (*argptr && !hasColon) | |
4112 | { | |
4113 | hasColon = (*argptr == ':'); | |
4114 | argptr++; | |
4115 | } | |
4116 | ||
4117 | if (hasColon) | |
4118 | badInput = (*argptr != ':'); /* Not a class::method */ | |
4119 | else | |
4120 | badInput = isdigit(*arg); /* a simple line number */ | |
4121 | } | |
4122 | ||
4123 | if (badInput) | |
4124 | printf_filtered("Usage: stop in <function | address>\n"); | |
4125 | else | |
4126 | break_command_1 (arg, 0, from_tty); | |
4127 | } | |
4128 | ||
4129 | static void | |
4130 | stopat_command (arg, from_tty) | |
4131 | char *arg; | |
4132 | int from_tty; | |
4133 | { | |
4134 | int badInput = 0; | |
4135 | ||
4136 | if (arg == (char *)NULL || *arg == '*') /* no line number */ | |
4137 | badInput = 1; | |
4138 | else | |
4139 | { | |
4140 | char *argptr = arg; | |
4141 | int hasColon = 0; | |
4142 | ||
4143 | /* look for a ':'. If there is a '::' then get out, otherwise | |
4144 | it is probably a line number. */ | |
4145 | while (*argptr && !hasColon) | |
4146 | { | |
4147 | hasColon = (*argptr == ':'); | |
4148 | argptr++; | |
4149 | } | |
4150 | ||
4151 | if (hasColon) | |
4152 | badInput = (*argptr == ':'); /* we have class::method */ | |
4153 | else | |
4154 | badInput = !isdigit(*arg); /* not a line number */ | |
4155 | } | |
4156 | ||
4157 | if (badInput) | |
4158 | printf_filtered("Usage: stop at <line>\n"); | |
4159 | else | |
4160 | break_command_1 (arg, 0, from_tty); | |
4161 | } | |
4162 | ||
bdbd5f50 | 4163 | /* ARGSUSED */ |
65b07ddc | 4164 | /* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) */ |
bd5635a1 | 4165 | static void |
11054881 | 4166 | watch_command_1 (arg, accessflag, from_tty) |
bd5635a1 | 4167 | char *arg; |
11054881 | 4168 | int accessflag; |
bd5635a1 RP |
4169 | int from_tty; |
4170 | { | |
4171 | struct breakpoint *b; | |
4172 | struct symtab_and_line sal; | |
f266e564 JK |
4173 | struct expression *exp; |
4174 | struct block *exp_valid_block; | |
11054881 | 4175 | struct value *val, *mark; |
b607efe7 FF |
4176 | struct frame_info *frame; |
4177 | struct frame_info *prev_frame = NULL; | |
11054881 KH |
4178 | char *exp_start = NULL; |
4179 | char *exp_end = NULL; | |
4180 | char *tok, *end_tok; | |
4181 | int toklen; | |
4182 | char *cond_start = NULL; | |
4183 | char *cond_end = NULL; | |
4184 | struct expression *cond = NULL; | |
6b038bd9 | 4185 | int i, other_type_used, target_resources_ok = 0; |
11054881 KH |
4186 | enum bptype bp_type; |
4187 | int mem_cnt = 0; | |
bd5635a1 | 4188 | |
6b038bd9 | 4189 | INIT_SAL (&sal); /* initialize to zeroes */ |
bd5635a1 | 4190 | |
f266e564 JK |
4191 | /* Parse arguments. */ |
4192 | innermost_block = NULL; | |
11054881 KH |
4193 | exp_start = arg; |
4194 | exp = parse_exp_1 (&arg, 0, 0); | |
4195 | exp_end = arg; | |
f266e564 | 4196 | exp_valid_block = innermost_block; |
11054881 | 4197 | mark = value_mark (); |
f266e564 JK |
4198 | val = evaluate_expression (exp); |
4199 | release_value (val); | |
2d313932 JK |
4200 | if (VALUE_LAZY (val)) |
4201 | value_fetch_lazy (val); | |
f266e564 | 4202 | |
11054881 KH |
4203 | tok = arg; |
4204 | while (*tok == ' ' || *tok == '\t') | |
4205 | tok++; | |
4206 | end_tok = tok; | |
4207 | ||
4208 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4209 | end_tok++; | |
4210 | ||
4211 | toklen = end_tok - tok; | |
4212 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4213 | { | |
4214 | tok = cond_start = end_tok + 1; | |
4215 | cond = parse_exp_1 (&tok, 0, 0); | |
4216 | cond_end = tok; | |
4217 | } | |
4218 | if (*tok) | |
4219 | error("Junk at end of command."); | |
4220 | ||
4221 | if (accessflag == 1) bp_type = bp_read_watchpoint; | |
4222 | else if (accessflag == 2) bp_type = bp_access_watchpoint; | |
4223 | else bp_type = bp_hardware_watchpoint; | |
4224 | ||
4225 | mem_cnt = can_use_hardware_watchpoint (val); | |
4226 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
4227 | error ("Expression cannot be implemented with read/access watchpoint."); | |
4228 | if (mem_cnt != 0) { | |
4229 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
4230 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
4231 | bp_type, i + mem_cnt, other_type_used); | |
4232 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) | |
4233 | error ("Target does not have this type of hardware watchpoint support."); | |
4234 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) | |
4235 | error ("Target resources have been allocated for other types of watchpoints."); | |
4236 | } | |
65b07ddc DT |
4237 | |
4238 | #if defined(HPUXHPPA) | |
4239 | /* ??rehrauer: DTS #CHFts23014 notes that on HP-UX if you set a h/w | |
4240 | watchpoint before the "run" command, the inferior dies with a e.g., | |
4241 | SIGILL once you start it. I initially believed this was due to a | |
4242 | bad interaction between page protection traps and the initial | |
4243 | startup sequence by the dynamic linker. | |
4244 | ||
4245 | However, I tried avoiding that by having HP-UX's implementation of | |
4246 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid | |
4247 | yet, which forced slow watches before a "run" or "attach", and it | |
4248 | still fails somewhere in the startup code. | |
4249 | ||
4250 | Until I figure out what's happening, I'm disallowing watches altogether | |
4251 | before the "run" or "attach" command. We'll tell the user they must | |
4252 | set watches after getting the program started. */ | |
4253 | if (! target_has_execution) | |
4254 | { | |
4255 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
4256 | return; | |
4257 | } | |
4258 | #endif /* HPUXHPPA */ | |
11054881 | 4259 | |
f266e564 | 4260 | /* Now set up the breakpoint. */ |
bd5635a1 RP |
4261 | b = set_raw_breakpoint (sal); |
4262 | set_breakpoint_count (breakpoint_count + 1); | |
4263 | b->number = breakpoint_count; | |
30875e1c | 4264 | b->disposition = donttouch; |
f266e564 JK |
4265 | b->exp = exp; |
4266 | b->exp_valid_block = exp_valid_block; | |
11054881 | 4267 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
f266e564 | 4268 | b->val = val; |
11054881 KH |
4269 | b->cond = cond; |
4270 | if (cond_start) | |
4271 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
4272 | else | |
4273 | b->cond_string = 0; | |
4274 | ||
999dd04b JL |
4275 | frame = block_innermost_frame (exp_valid_block); |
4276 | if (frame) | |
4277 | { | |
4278 | prev_frame = get_prev_frame (frame); | |
706dc3ce | 4279 | b->watchpoint_frame = frame->frame; |
999dd04b JL |
4280 | } |
4281 | else | |
9e8db445 | 4282 | b->watchpoint_frame = (CORE_ADDR)0; |
999dd04b | 4283 | |
11054881 KH |
4284 | if (mem_cnt && target_resources_ok > 0) |
4285 | b->type = bp_type; | |
999dd04b JL |
4286 | else |
4287 | b->type = bp_watchpoint; | |
4288 | ||
4289 | /* If the expression is "local", then set up a "watchpoint scope" | |
4290 | breakpoint at the point where we've left the scope of the watchpoint | |
4291 | expression. */ | |
4292 | if (innermost_block) | |
4293 | { | |
999dd04b JL |
4294 | if (prev_frame) |
4295 | { | |
6b038bd9 DT |
4296 | struct breakpoint *scope_breakpoint; |
4297 | struct symtab_and_line scope_sal; | |
4298 | ||
4299 | INIT_SAL (&scope_sal); /* initialize to zeroes */ | |
4300 | scope_sal.pc = get_frame_pc (prev_frame); | |
4301 | scope_sal.section = find_pc_overlay (scope_sal.pc); | |
4302 | ||
999dd04b JL |
4303 | scope_breakpoint = set_raw_breakpoint (scope_sal); |
4304 | set_breakpoint_count (breakpoint_count + 1); | |
4305 | scope_breakpoint->number = breakpoint_count; | |
4306 | ||
4307 | scope_breakpoint->type = bp_watchpoint_scope; | |
4308 | scope_breakpoint->enable = enabled; | |
4309 | ||
4310 | /* Automatically delete the breakpoint when it hits. */ | |
e8bf33c4 | 4311 | scope_breakpoint->disposition = del; |
999dd04b JL |
4312 | |
4313 | /* Only break in the proper frame (help with recursion). */ | |
4314 | scope_breakpoint->frame = prev_frame->frame; | |
4315 | ||
4316 | /* Set the address at which we will stop. */ | |
4317 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
4318 | ||
4319 | /* The scope breakpoint is related to the watchpoint. We | |
4320 | will need to act on them together. */ | |
4321 | b->related_breakpoint = scope_breakpoint; | |
4322 | } | |
4323 | } | |
11054881 | 4324 | value_free_to_mark (mark); |
bd5635a1 RP |
4325 | mention (b); |
4326 | } | |
999dd04b | 4327 | |
11054881 KH |
4328 | /* Return count of locations need to be watched and can be handled |
4329 | in hardware. If the watchpoint can not be handled | |
999dd04b JL |
4330 | in hardware return zero. */ |
4331 | ||
65b07ddc DT |
4332 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) |
4333 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_size) \ | |
4334 | ((byte_size) <= (REGISTER_SIZE)) | |
4335 | #endif | |
4336 | ||
999dd04b | 4337 | static int |
11054881 KH |
4338 | can_use_hardware_watchpoint (v) |
4339 | struct value *v; | |
999dd04b | 4340 | { |
11054881 | 4341 | int found_memory_cnt = 0; |
65b07ddc DT |
4342 | |
4343 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
4344 | if (! can_use_hw_watchpoints) | |
4345 | return 0; | |
999dd04b JL |
4346 | |
4347 | /* Make sure all the intermediate values are in memory. Also make sure | |
4348 | we found at least one memory expression. Guards against watch 0x12345, | |
4349 | which is meaningless, but could cause errors if one tries to insert a | |
4350 | hardware watchpoint for the constant expression. */ | |
11054881 | 4351 | for ( ; v; v = v->next) |
999dd04b | 4352 | { |
11054881 KH |
4353 | if (v->lval == lval_memory) |
4354 | { | |
65b07ddc | 4355 | if (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (TYPE_LENGTH (VALUE_TYPE (v)))) |
11054881 KH |
4356 | found_memory_cnt++; |
4357 | } | |
4358 | else if (v->lval != not_lval && v->modifiable == 0) | |
999dd04b | 4359 | return 0; |
999dd04b JL |
4360 | } |
4361 | ||
4362 | /* The expression itself looks suitable for using a hardware | |
4363 | watchpoint, but give the target machine a chance to reject it. */ | |
11054881 KH |
4364 | return found_memory_cnt; |
4365 | } | |
4366 | ||
4367 | static void watch_command (arg, from_tty) | |
4368 | char *arg; | |
4369 | int from_tty; | |
4370 | { | |
4371 | watch_command_1 (arg, 0, from_tty); | |
4372 | } | |
4373 | ||
4374 | static void rwatch_command (arg, from_tty) | |
4375 | char *arg; | |
4376 | int from_tty; | |
4377 | { | |
4378 | watch_command_1 (arg, 1, from_tty); | |
4379 | } | |
4380 | ||
4381 | static void awatch_command (arg, from_tty) | |
4382 | char *arg; | |
4383 | int from_tty; | |
4384 | { | |
4385 | watch_command_1 (arg, 2, from_tty); | |
999dd04b JL |
4386 | } |
4387 | ||
bd5635a1 | 4388 | \f |
706dc3ce JL |
4389 | /* Helper routine for the until_command routine in infcmd.c. Here |
4390 | because it uses the mechanisms of breakpoints. */ | |
4391 | ||
bdbd5f50 | 4392 | /* ARGSUSED */ |
bd5635a1 RP |
4393 | void |
4394 | until_break_command (arg, from_tty) | |
4395 | char *arg; | |
4396 | int from_tty; | |
4397 | { | |
4398 | struct symtabs_and_lines sals; | |
4399 | struct symtab_and_line sal; | |
706dc3ce | 4400 | struct frame_info *prev_frame = get_prev_frame (selected_frame); |
30875e1c SG |
4401 | struct breakpoint *breakpoint; |
4402 | struct cleanup *old_chain; | |
bd5635a1 RP |
4403 | |
4404 | clear_proceed_status (); | |
4405 | ||
4406 | /* Set a breakpoint where the user wants it and at return from | |
4407 | this function */ | |
4408 | ||
4409 | if (default_breakpoint_valid) | |
4410 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 4411 | default_breakpoint_line, (char ***)NULL); |
bd5635a1 | 4412 | else |
d889f6b7 | 4413 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
4414 | |
4415 | if (sals.nelts != 1) | |
4416 | error ("Couldn't get information on specified line."); | |
4417 | ||
4418 | sal = sals.sals[0]; | |
c8950965 | 4419 | free ((PTR)sals.sals); /* malloc'd, so freed */ |
bd5635a1 RP |
4420 | |
4421 | if (*arg) | |
4422 | error ("Junk at end of arguments."); | |
4423 | ||
30875e1c | 4424 | resolve_sal_pc (&sal); |
bd5635a1 | 4425 | |
30875e1c | 4426 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
bd5635a1 | 4427 | |
ad3b8c4a | 4428 | old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
30875e1c | 4429 | |
bd5635a1 RP |
4430 | /* Keep within the current frame */ |
4431 | ||
4432 | if (prev_frame) | |
4433 | { | |
706dc3ce JL |
4434 | sal = find_pc_line (prev_frame->pc, 0); |
4435 | sal.pc = prev_frame->pc; | |
30875e1c | 4436 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); |
ad3b8c4a | 4437 | make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
bd5635a1 RP |
4438 | } |
4439 | ||
d7e7e851 | 4440 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
30875e1c | 4441 | do_cleanups(old_chain); |
bd5635a1 RP |
4442 | } |
4443 | \f | |
bdbd5f50 JG |
4444 | #if 0 |
4445 | /* These aren't used; I don't konw what they were for. */ | |
bd5635a1 RP |
4446 | /* Set a breakpoint at the catch clause for NAME. */ |
4447 | static int | |
4448 | catch_breakpoint (name) | |
4449 | char *name; | |
4450 | { | |
4451 | } | |
4452 | ||
4453 | static int | |
4454 | disable_catch_breakpoint () | |
4455 | { | |
4456 | } | |
4457 | ||
4458 | static int | |
4459 | delete_catch_breakpoint () | |
4460 | { | |
4461 | } | |
4462 | ||
4463 | static int | |
4464 | enable_catch_breakpoint () | |
4465 | { | |
4466 | } | |
bdbd5f50 | 4467 | #endif /* 0 */ |
bd5635a1 RP |
4468 | |
4469 | struct sal_chain | |
4470 | { | |
4471 | struct sal_chain *next; | |
4472 | struct symtab_and_line sal; | |
4473 | }; | |
4474 | ||
65b07ddc DT |
4475 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
4476 | had been commented out in the v.4.16 sources, and stays | |
4477 | disabled there now because "catch NAME" syntax isn't allowed. | |
4478 | pai/1997-07-11 */ | |
bdbd5f50 | 4479 | /* This isn't used; I don't know what it was for. */ |
bd5635a1 RP |
4480 | /* For each catch clause identified in ARGS, run FUNCTION |
4481 | with that clause as an argument. */ | |
4482 | static struct symtabs_and_lines | |
4483 | map_catch_names (args, function) | |
4484 | char *args; | |
4485 | int (*function)(); | |
4486 | { | |
4487 | register char *p = args; | |
4488 | register char *p1; | |
4489 | struct symtabs_and_lines sals; | |
bdbd5f50 | 4490 | #if 0 |
bd5635a1 | 4491 | struct sal_chain *sal_chain = 0; |
bdbd5f50 | 4492 | #endif |
bd5635a1 RP |
4493 | |
4494 | if (p == 0) | |
4495 | error_no_arg ("one or more catch names"); | |
4496 | ||
4497 | sals.nelts = 0; | |
4498 | sals.sals = NULL; | |
4499 | ||
4500 | while (*p) | |
4501 | { | |
4502 | p1 = p; | |
4503 | /* Don't swallow conditional part. */ | |
4504 | if (p1[0] == 'i' && p1[1] == 'f' | |
4505 | && (p1[2] == ' ' || p1[2] == '\t')) | |
4506 | break; | |
4507 | ||
4508 | if (isalpha (*p1)) | |
4509 | { | |
4510 | p1++; | |
4511 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
4512 | p1++; | |
4513 | } | |
4514 | ||
4515 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
4516 | error ("Arguments must be catch names."); | |
4517 | ||
4518 | *p1 = 0; | |
4519 | #if 0 | |
4520 | if (function (p)) | |
4521 | { | |
6b038bd9 DT |
4522 | struct sal_chain *next = (struct sal_chain *) |
4523 | alloca (sizeof (struct sal_chain)); | |
bd5635a1 RP |
4524 | next->next = sal_chain; |
4525 | next->sal = get_catch_sal (p); | |
4526 | sal_chain = next; | |
4527 | goto win; | |
4528 | } | |
4529 | #endif | |
199b2450 | 4530 | printf_unfiltered ("No catch clause for exception %s.\n", p); |
bdbd5f50 | 4531 | #if 0 |
bd5635a1 | 4532 | win: |
bdbd5f50 | 4533 | #endif |
bd5635a1 RP |
4534 | p = p1; |
4535 | while (*p == ' ' || *p == '\t') p++; | |
4536 | } | |
4537 | } | |
4538 | ||
4539 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
4540 | ||
4541 | static struct symtabs_and_lines | |
4542 | get_catch_sals (this_level_only) | |
4543 | int this_level_only; | |
4544 | { | |
bd5635a1 | 4545 | register struct blockvector *bl; |
777bef06 | 4546 | register struct block *block; |
bd5635a1 | 4547 | int index, have_default = 0; |
777bef06 | 4548 | CORE_ADDR pc; |
bd5635a1 RP |
4549 | struct symtabs_and_lines sals; |
4550 | struct sal_chain *sal_chain = 0; | |
4551 | char *blocks_searched; | |
4552 | ||
777bef06 JK |
4553 | /* Not sure whether an error message is always the correct response, |
4554 | but it's better than a core dump. */ | |
4555 | if (selected_frame == NULL) | |
4556 | error ("No selected frame."); | |
4557 | block = get_frame_block (selected_frame); | |
706dc3ce | 4558 | pc = selected_frame->pc; |
777bef06 | 4559 | |
bd5635a1 RP |
4560 | sals.nelts = 0; |
4561 | sals.sals = NULL; | |
4562 | ||
4563 | if (block == 0) | |
4564 | error ("No symbol table info available.\n"); | |
4565 | ||
4566 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
4567 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4ed3a9ea | 4568 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
4569 | |
4570 | while (block != 0) | |
4571 | { | |
4572 | CORE_ADDR end = BLOCK_END (block) - 4; | |
4573 | int last_index; | |
4574 | ||
4575 | if (bl != blockvector_for_pc (end, &index)) | |
4576 | error ("blockvector blotch"); | |
4577 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
4578 | error ("blockvector botch"); | |
4579 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
4580 | index += 1; | |
4581 | ||
4582 | /* Don't print out blocks that have gone by. */ | |
4583 | while (index < last_index | |
4584 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
4585 | index++; | |
4586 | ||
4587 | while (index < last_index | |
4588 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
4589 | { | |
4590 | if (blocks_searched[index] == 0) | |
4591 | { | |
4592 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
4593 | int nsyms; | |
4594 | register int i; | |
4595 | register struct symbol *sym; | |
4596 | ||
4597 | nsyms = BLOCK_NSYMS (b); | |
4598 | ||
4599 | for (i = 0; i < nsyms; i++) | |
4600 | { | |
4601 | sym = BLOCK_SYM (b, i); | |
2d313932 | 4602 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
4603 | { |
4604 | if (have_default) | |
4605 | continue; | |
4606 | have_default = 1; | |
4607 | } | |
4608 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
4609 | { | |
4610 | struct sal_chain *next = (struct sal_chain *) | |
4611 | alloca (sizeof (struct sal_chain)); | |
4612 | next->next = sal_chain; | |
4613 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
4614 | sal_chain = next; | |
4615 | } | |
4616 | } | |
4617 | blocks_searched[index] = 1; | |
4618 | } | |
4619 | index++; | |
4620 | } | |
4621 | if (have_default) | |
4622 | break; | |
4623 | if (sal_chain && this_level_only) | |
4624 | break; | |
4625 | ||
65b07ddc DT |
4626 | /* After handling the function's top-level block, stop. |
4627 | Don't continue to its superblock, the block of | |
4628 | per-file symbols. */ | |
4629 | if (BLOCK_FUNCTION (block)) | |
4630 | break; | |
4631 | block = BLOCK_SUPERBLOCK (block); | |
4632 | } | |
4633 | ||
4634 | if (sal_chain) | |
4635 | { | |
4636 | struct sal_chain *tmp_chain; | |
4637 | ||
4638 | /* Count the number of entries. */ | |
4639 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
4640 | tmp_chain = tmp_chain->next) | |
4641 | index++; | |
4642 | ||
4643 | sals.nelts = index; | |
4644 | sals.sals = (struct symtab_and_line *) | |
4645 | xmalloc (index * sizeof (struct symtab_and_line)); | |
4646 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
4647 | sals.sals[index] = sal_chain->sal; | |
4648 | } | |
4649 | ||
4650 | return sals; | |
4651 | } | |
4652 | ||
4653 | static void | |
4654 | ep_skip_leading_whitespace (s) | |
4655 | char ** s; | |
4656 | { | |
4657 | if ((s == NULL) || (*s == NULL)) | |
4658 | return; | |
4659 | while (isspace(**s)) | |
4660 | *s += 1; | |
4661 | } | |
4662 | ||
4663 | /* This function examines a string, and attempts to find a token | |
4664 | that might be an event name in the leading characters. If a | |
4665 | possible match is found, a pointer to the last character of | |
4666 | the token is returned. Else, NULL is returned. */ | |
4667 | static char * | |
4668 | ep_find_event_name_end (arg) | |
4669 | char * arg; | |
4670 | { | |
4671 | char * s = arg; | |
4672 | char * event_name_end = NULL; | |
4673 | ||
4674 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ | |
4675 | if (arg == NULL) | |
4676 | return NULL; | |
4677 | ||
4678 | /* We break out of the loop when we find a token delimiter. | |
4679 | Basically, we're looking for alphanumerics and underscores; | |
4680 | anything else delimites the token. */ | |
4681 | while (*s != '\0') | |
4682 | { | |
4683 | if (! isalnum(*s) && (*s != '_')) | |
4684 | break; | |
4685 | event_name_end = s; | |
4686 | s++; | |
4687 | } | |
4688 | ||
4689 | return event_name_end; | |
4690 | } | |
4691 | ||
4692 | ||
4693 | /* This function attempts to parse an optional "if <cond>" clause | |
4694 | from the arg string. If one is not found, it returns NULL. | |
4695 | ||
4696 | Else, it returns a pointer to the condition string. (It does not | |
4697 | attempt to evaluate the string against a particular block.) And, | |
4698 | it updates arg to point to the first character following the parsed | |
4699 | if clause in the arg string. */ | |
4700 | static char * | |
4701 | ep_parse_optional_if_clause (arg) | |
4702 | char ** arg; | |
4703 | { | |
4704 | char * cond_string; | |
4705 | ||
4706 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace((*arg)[2])) | |
4707 | return NULL; | |
4708 | ||
4709 | /* Skip the "if" keyword. */ | |
4710 | (*arg) += 2; | |
4711 | ||
4712 | /* Skip any extra leading whitespace, and record the start of the | |
4713 | condition string. */ | |
4714 | ep_skip_leading_whitespace (arg); | |
4715 | cond_string = *arg; | |
4716 | ||
4717 | /* Assume that the condition occupies the remainder of the arg string. */ | |
4718 | (*arg) += strlen (cond_string); | |
4719 | ||
4720 | return cond_string; | |
4721 | } | |
4722 | ||
4723 | /* This function attempts to parse an optional filename from the arg | |
4724 | string. If one is not found, it returns NULL. | |
4725 | ||
4726 | Else, it returns a pointer to the parsed filename. (This function | |
4727 | makes no attempt to verify that a file of that name exists, or is | |
4728 | accessible.) And, it updates arg to point to the first character | |
4729 | following the parsed filename in the arg string. | |
4730 | ||
4731 | Note that clients needing to preserve the returned filename for | |
4732 | future access should copy it to their own buffers. */ | |
4733 | static char * | |
4734 | ep_parse_optional_filename (arg) | |
4735 | char ** arg; | |
4736 | { | |
4737 | static char filename [1024]; | |
4738 | char * arg_p = *arg; | |
4739 | int i; | |
4740 | char c; | |
4741 | ||
4742 | if ((*arg_p == '\0') || isspace (*arg_p)) | |
4743 | return NULL; | |
4744 | ||
4745 | for (i=0; ; i++) | |
4746 | { | |
4747 | c = *arg_p; | |
4748 | if (isspace (c)) | |
4749 | c = '\0'; | |
4750 | filename[i] = c; | |
4751 | if (c == '\0') | |
4752 | break; | |
4753 | arg_p++; | |
4754 | } | |
4755 | *arg = arg_p; | |
4756 | ||
4757 | return filename; | |
4758 | } | |
4759 | ||
4760 | /* Commands to deal with catching events, such as signals, exceptions, | |
4761 | process start/exit, etc. */ | |
4762 | ||
4763 | typedef enum {catch_fork, catch_vfork} catch_fork_kind; | |
4764 | ||
4765 | static void | |
4766 | catch_fork_command_1 (fork_kind, arg, tempflag, from_tty) | |
4767 | catch_fork_kind fork_kind; | |
4768 | char * arg; | |
4769 | int tempflag; | |
4770 | int from_tty; | |
4771 | { | |
4772 | char * cond_string = NULL; | |
4773 | ||
4774 | ep_skip_leading_whitespace (&arg); | |
4775 | ||
4776 | /* The allowed syntax is: | |
4777 | catch [v]fork | |
4778 | catch [v]fork if <cond> | |
4779 | ||
4780 | First, check if there's an if clause. */ | |
4781 | cond_string = ep_parse_optional_if_clause (&arg); | |
4782 | ||
4783 | if ((*arg != '\0') && !isspace (*arg)) | |
4784 | error ("Junk at end of arguments."); | |
4785 | ||
4786 | /* If this target supports it, create a fork or vfork catchpoint | |
4787 | and enable reporting of such events. */ | |
4788 | switch (fork_kind) { | |
4789 | case catch_fork : | |
4790 | create_fork_event_catchpoint (tempflag, cond_string); | |
4791 | break; | |
4792 | case catch_vfork : | |
4793 | create_vfork_event_catchpoint (tempflag, cond_string); | |
4794 | break; | |
4795 | default : | |
4796 | error ("unsupported or unknown fork kind; cannot catch it"); | |
4797 | break; | |
4798 | } | |
4799 | } | |
4800 | ||
4801 | static void | |
4802 | catch_exec_command_1 (arg, tempflag, from_tty) | |
4803 | char * arg; | |
4804 | int tempflag; | |
4805 | int from_tty; | |
4806 | { | |
4807 | char * cond_string = NULL; | |
4808 | ||
4809 | ep_skip_leading_whitespace (&arg); | |
4810 | ||
4811 | /* The allowed syntax is: | |
4812 | catch exec | |
4813 | catch exec if <cond> | |
4814 | ||
4815 | First, check if there's an if clause. */ | |
4816 | cond_string = ep_parse_optional_if_clause (&arg); | |
4817 | ||
4818 | if ((*arg != '\0') && !isspace (*arg)) | |
4819 | error ("Junk at end of arguments."); | |
4820 | ||
4821 | /* If this target supports it, create an exec catchpoint | |
4822 | and enable reporting of such events. */ | |
4823 | create_exec_event_catchpoint (tempflag, cond_string); | |
4824 | } | |
4825 | ||
4826 | #if defined(SOLIB_ADD) | |
4827 | static void | |
4828 | catch_load_command_1 (arg, tempflag, from_tty) | |
4829 | char * arg; | |
4830 | int tempflag; | |
4831 | int from_tty; | |
4832 | { | |
4833 | char * dll_pathname = NULL; | |
4834 | char * cond_string = NULL; | |
4835 | ||
4836 | ep_skip_leading_whitespace (&arg); | |
4837 | ||
4838 | /* The allowed syntax is: | |
4839 | catch load | |
4840 | catch load if <cond> | |
4841 | catch load <filename> | |
4842 | catch load <filename> if <cond> | |
4843 | ||
4844 | The user is not allowed to specify the <filename> after an | |
4845 | if clause. | |
4846 | ||
4847 | We'll ignore the pathological case of a file named "if". | |
4848 | ||
4849 | First, check if there's an if clause. If so, then there | |
4850 | cannot be a filename. */ | |
4851 | cond_string = ep_parse_optional_if_clause (&arg); | |
4852 | ||
4853 | /* If there was an if clause, then there cannot be a filename. | |
4854 | Else, there might be a filename and an if clause. */ | |
4855 | if (cond_string == NULL) | |
4856 | { | |
4857 | dll_pathname = ep_parse_optional_filename (&arg); | |
4858 | ep_skip_leading_whitespace (&arg); | |
4859 | cond_string = ep_parse_optional_if_clause (&arg); | |
4860 | } | |
4861 | ||
4862 | if ((*arg != '\0') && !isspace (*arg)) | |
4863 | error ("Junk at end of arguments."); | |
4864 | ||
4865 | /* Create a load breakpoint that only triggers when a load of | |
4866 | the specified dll (or any dll, if no pathname was specified) | |
4867 | occurs. */ | |
4868 | SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, dll_pathname, cond_string); | |
4869 | } | |
4870 | ||
4871 | static void | |
4872 | catch_unload_command_1 (arg, tempflag, from_tty) | |
4873 | char * arg; | |
4874 | int tempflag; | |
4875 | int from_tty; | |
4876 | { | |
4877 | char * dll_pathname = NULL; | |
4878 | char * cond_string = NULL; | |
4879 | ||
4880 | ep_skip_leading_whitespace (&arg); | |
4881 | ||
4882 | /* The allowed syntax is: | |
4883 | catch unload | |
4884 | catch unload if <cond> | |
4885 | catch unload <filename> | |
4886 | catch unload <filename> if <cond> | |
4887 | ||
4888 | The user is not allowed to specify the <filename> after an | |
4889 | if clause. | |
4890 | ||
4891 | We'll ignore the pathological case of a file named "if". | |
4892 | ||
4893 | First, check if there's an if clause. If so, then there | |
4894 | cannot be a filename. */ | |
4895 | cond_string = ep_parse_optional_if_clause (&arg); | |
4896 | ||
4897 | /* If there was an if clause, then there cannot be a filename. | |
4898 | Else, there might be a filename and an if clause. */ | |
4899 | if (cond_string == NULL) | |
4900 | { | |
4901 | dll_pathname = ep_parse_optional_filename (&arg); | |
4902 | ep_skip_leading_whitespace (&arg); | |
4903 | cond_string = ep_parse_optional_if_clause (&arg); | |
bd5635a1 | 4904 | } |
65b07ddc DT |
4905 | |
4906 | if ((*arg != '\0') && !isspace (*arg)) | |
4907 | error ("Junk at end of arguments."); | |
4908 | ||
4909 | /* Create an unload breakpoint that only triggers when an unload of | |
4910 | the specified dll (or any dll, if no pathname was specified) | |
4911 | occurs. */ | |
4912 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, dll_pathname, cond_string); | |
4913 | } | |
4914 | #endif /* SOLIB_ADD */ | |
bd5635a1 | 4915 | |
65b07ddc DT |
4916 | /* Commands to deal with catching exceptions. */ |
4917 | ||
4918 | /* Set a breakpoint at the specified callback routine for an | |
4919 | exception event callback */ | |
4920 | ||
4921 | static void | |
4922 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal) | |
4923 | int tempflag; | |
4924 | char * cond_string; | |
4925 | enum exception_event_kind ex_event; | |
4926 | struct symtab_and_line * sal; | |
4927 | { | |
4928 | struct breakpoint * b; | |
4929 | int i; | |
4930 | int thread = -1; /* All threads. */ | |
4931 | ||
4932 | if (!sal) /* no exception support? */ | |
4933 | return; | |
4934 | ||
4935 | b = set_raw_breakpoint (*sal); | |
4936 | set_breakpoint_count (breakpoint_count + 1); | |
4937 | b->number = breakpoint_count; | |
4938 | b->cond = NULL; | |
4939 | b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string)); | |
4940 | b->thread = thread; | |
4941 | b->addr_string = NULL; | |
4942 | b->enable = enabled; | |
4943 | b->disposition = tempflag ? del : donttouch; | |
4944 | switch (ex_event) | |
bd5635a1 | 4945 | { |
65b07ddc DT |
4946 | case EX_EVENT_THROW: |
4947 | b->type = bp_catch_throw; | |
4948 | break; | |
4949 | case EX_EVENT_CATCH: | |
4950 | b->type = bp_catch_catch; | |
4951 | break; | |
4952 | default: /* error condition */ | |
4953 | b->type = bp_none; | |
4954 | b->enable = disabled; | |
4955 | error ("Internal error -- invalid catchpoint kind"); | |
4956 | } | |
4957 | mention (b); | |
4958 | } | |
bd5635a1 | 4959 | |
65b07ddc | 4960 | /* Deal with "catch catch" and "catch throw" commands */ |
bd5635a1 | 4961 | |
65b07ddc DT |
4962 | static void |
4963 | catch_exception_command_1 (ex_event, arg, tempflag, from_tty) | |
4964 | enum exception_event_kind ex_event; | |
4965 | char * arg; | |
4966 | int tempflag; | |
4967 | int from_tty; | |
4968 | { | |
4969 | char * cond_string = NULL; | |
4970 | struct symtab_and_line * sal = NULL; | |
4971 | ||
4972 | ep_skip_leading_whitespace (&arg); | |
4973 | ||
4974 | cond_string = ep_parse_optional_if_clause (&arg); | |
4975 | ||
4976 | if ((*arg != '\0') && !isspace (*arg)) | |
4977 | error ("Junk at end of arguments."); | |
4978 | ||
4979 | if ((ex_event != EX_EVENT_THROW) && | |
4980 | (ex_event != EX_EVENT_CATCH)) | |
4981 | error ("Unsupported or unknown exception event; cannot catch it"); | |
4982 | ||
4983 | /* See if we can find a callback routine */ | |
4984 | sal = target_enable_exception_callback (ex_event, 1); | |
4985 | ||
4986 | if (sal) | |
4987 | { | |
4988 | /* We have callbacks from the runtime system for exceptions. | |
4989 | Set a breakpoint on the sal found, if no errors */ | |
4990 | if (sal != (struct symtab_and_line *) -1) | |
4991 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); | |
4992 | else | |
4993 | return; /* something went wrong with setting up callbacks */ | |
4994 | } | |
4995 | else | |
4996 | { | |
4997 | /* No callbacks from runtime system for exceptions. | |
4998 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
4999 | if (ex_event == EX_EVENT_CATCH) | |
5000 | { | |
5001 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
5002 | } | |
5003 | else if (ex_event == EX_EVENT_THROW) | |
5004 | { | |
5005 | /* Set a breakpoint on __raise_exception () */ | |
5006 | ||
5007 | fprintf_filtered (gdb_stderr, "Unsupported with this platform/compiler combination.\n"); | |
5008 | fprintf_filtered (gdb_stderr, "Perhaps you can achieve the effect you want by setting\n"); | |
5009 | fprintf_filtered (gdb_stderr, "a breakpoint on __raise_exception().\n"); | |
5010 | } | |
bd5635a1 | 5011 | } |
65b07ddc | 5012 | } |
bd5635a1 | 5013 | |
65b07ddc DT |
5014 | /* Cover routine to allow wrapping target_enable_exception_catchpoints |
5015 | inside a catch_errors */ | |
5016 | ||
5017 | static struct symtab_and_line * | |
5018 | cover_target_enable_exception_callback (args) | |
5019 | args_for_catchpoint_enable * args; | |
5020 | { | |
5021 | target_enable_exception_callback (args->kind, args->enable); | |
bd5635a1 RP |
5022 | } |
5023 | ||
65b07ddc DT |
5024 | |
5025 | ||
5026 | /* This is the original v.4.16 and earlier version of the | |
5027 | catch_command_1() function. Now that other flavours of "catch" | |
5028 | have been introduced, and since exception handling can be handled | |
5029 | in other ways (through target ops) also, this is used only for the | |
5030 | GNU C++ exception handling system. | |
5031 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
5032 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
5033 | there was no code in GDB 4.16 for "catch throw". | |
5034 | ||
5035 | Called from catch_exception_command_1 () */ | |
5036 | ||
bd5635a1 | 5037 | |
30875e1c | 5038 | static void |
65b07ddc | 5039 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty) |
bd5635a1 RP |
5040 | char *arg; |
5041 | int tempflag; | |
5042 | int from_tty; | |
5043 | { | |
5044 | /* First, translate ARG into something we can deal with in terms | |
5045 | of breakpoints. */ | |
5046 | ||
5047 | struct symtabs_and_lines sals; | |
5048 | struct symtab_and_line sal; | |
5049 | register struct expression *cond = 0; | |
5050 | register struct breakpoint *b; | |
5051 | char *save_arg; | |
5052 | int i; | |
bd5635a1 | 5053 | |
6b038bd9 | 5054 | INIT_SAL (&sal); /* initialize to zeroes */ |
bd5635a1 RP |
5055 | |
5056 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
5057 | are breakpointed. */ | |
5058 | ||
5059 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
5060 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
5061 | { | |
5062 | /* Grab all active catch clauses. */ | |
5063 | sals = get_catch_sals (0); | |
5064 | } | |
5065 | else | |
5066 | { | |
5067 | /* Grab selected catch clauses. */ | |
fe675038 | 5068 | error ("catch NAME not implemented"); |
65b07ddc | 5069 | |
bdbd5f50 | 5070 | #if 0 |
65b07ddc DT |
5071 | /* Not sure why this code has been disabled. I'm leaving |
5072 | it disabled. We can never come here now anyway | |
5073 | since we don't allow the "catch NAME" syntax. | |
5074 | pai/1997-07-11 */ | |
5075 | ||
bdbd5f50 | 5076 | /* This isn't used; I don't know what it was for. */ |
bd5635a1 | 5077 | sals = map_catch_names (arg, catch_breakpoint); |
bdbd5f50 | 5078 | #endif |
bd5635a1 RP |
5079 | } |
5080 | ||
5081 | if (! sals.nelts) | |
5082 | return; | |
5083 | ||
5084 | save_arg = arg; | |
5085 | for (i = 0; i < sals.nelts; i++) | |
5086 | { | |
30875e1c | 5087 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
5088 | |
5089 | while (arg && *arg) | |
5090 | { | |
5091 | if (arg[0] == 'i' && arg[1] == 'f' | |
5092 | && (arg[2] == ' ' || arg[2] == '\t')) | |
30875e1c SG |
5093 | cond = parse_exp_1 ((arg += 2, &arg), |
5094 | block_for_pc (sals.sals[i].pc), 0); | |
bd5635a1 RP |
5095 | else |
5096 | error ("Junk at end of arguments."); | |
5097 | } | |
5098 | arg = save_arg; | |
bd5635a1 RP |
5099 | } |
5100 | ||
5101 | for (i = 0; i < sals.nelts; i++) | |
5102 | { | |
5103 | sal = sals.sals[i]; | |
5104 | ||
5105 | if (from_tty) | |
6b038bd9 | 5106 | describe_other_breakpoints (sal.pc, sal.section); |
bd5635a1 RP |
5107 | |
5108 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
5109 | set_breakpoint_count (breakpoint_count + 1); |
5110 | b->number = breakpoint_count; | |
65b07ddc DT |
5111 | b->type = bp_breakpoint; /* Important -- this is an ordinary breakpoint. |
5112 | For platforms with callback support for exceptions, | |
5113 | create_exception_catchpoint() will create special | |
5114 | bp types (bp_catch_catch and bp_catch_throw), and | |
5115 | there is code in insert_breakpoints() and elsewhere | |
5116 | that depends on that. */ | |
5117 | ||
bd5635a1 | 5118 | b->cond = cond; |
30875e1c | 5119 | b->enable = enabled; |
e8bf33c4 | 5120 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 | 5121 | |
d889f6b7 | 5122 | mention (b); |
bd5635a1 RP |
5123 | } |
5124 | ||
5125 | if (sals.nelts > 1) | |
5126 | { | |
199b2450 TL |
5127 | printf_unfiltered ("Multiple breakpoints were set.\n"); |
5128 | printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 5129 | } |
c8950965 | 5130 | free ((PTR)sals.sals); |
bd5635a1 RP |
5131 | } |
5132 | ||
65b07ddc DT |
5133 | #if 0 |
5134 | /* This creates a temporary internal breakpoint | |
5135 | just to placate infrun */ | |
5136 | static struct breakpoint * | |
5137 | create_temp_exception_breakpoint (pc) | |
5138 | CORE_ADDR pc; | |
5139 | { | |
5140 | struct symtab_and_line sal; | |
5141 | struct breakpoint *b; | |
5142 | ||
5143 | INIT_SAL(&sal); | |
5144 | sal.pc = pc; | |
5145 | sal.symtab = NULL; | |
5146 | sal.line = 0; | |
5147 | ||
5148 | b = set_raw_breakpoint (sal); | |
5149 | if (!b) | |
5150 | error ("Internal error -- couldn't set temp exception breakpoint"); | |
5151 | ||
5152 | b->type = bp_breakpoint; | |
5153 | b->disposition = del; | |
5154 | b->enable = enabled; | |
5155 | b->silent = 1; | |
5156 | b->number = internal_breakpoint_number--; | |
5157 | return b; | |
5158 | } | |
5159 | #endif | |
5160 | ||
5161 | static void | |
5162 | catch_command_1 (arg, tempflag, from_tty) | |
5163 | char *arg; | |
5164 | int tempflag; | |
5165 | int from_tty; | |
5166 | { | |
5167 | ||
5168 | /* The first argument may be an event name, such as "start" or "load". | |
5169 | If so, then handle it as such. If it doesn't match an event name, | |
5170 | then attempt to interpret it as an exception name. (This latter is | |
5171 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
5172 | ||
5173 | First, try to find the bounds of what might be an event name. */ | |
5174 | char * arg1_start = arg; | |
5175 | char * arg1_end; | |
5176 | int arg1_length; | |
5177 | ||
5178 | if (arg1_start == NULL) | |
5179 | { | |
5180 | /* Old behaviour was to use pre-v-4.16 syntax */ | |
5181 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ | |
5182 | /* return; */ | |
5183 | /* Now, this is not allowed */ | |
49082556 | 5184 | error ("Catch requires an event name."); |
65b07ddc DT |
5185 | |
5186 | } | |
5187 | arg1_end = ep_find_event_name_end (arg1_start); | |
5188 | if (arg1_end == NULL) | |
5189 | error ("catch requires an event"); | |
5190 | arg1_length = arg1_end + 1 - arg1_start; | |
5191 | ||
5192 | /* Try to match what we found against known event names. */ | |
5193 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
5194 | { | |
5195 | error ("Catch of signal not yet implemented"); | |
5196 | } | |
5197 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
5198 | { | |
5199 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end+1, tempflag, from_tty); | |
5200 | } | |
5201 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
5202 | { | |
5203 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end+1, tempflag, from_tty); | |
5204 | } | |
5205 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
5206 | { | |
5207 | error ("Catch of thread_start not yet implemented"); | |
5208 | } | |
5209 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
5210 | { | |
5211 | error ("Catch of thread_exit not yet implemented"); | |
5212 | } | |
5213 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
5214 | { | |
5215 | error ("Catch of thread_join not yet implemented"); | |
5216 | } | |
5217 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
5218 | { | |
5219 | error ("Catch of start not yet implemented"); | |
5220 | } | |
5221 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
5222 | { | |
5223 | error ("Catch of exit not yet implemented"); | |
5224 | } | |
5225 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
5226 | { | |
5227 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
5228 | catch_fork_command_1 (catch_fork, arg1_end+1, tempflag, from_tty); | |
5229 | #else | |
5230 | error ("Catch of fork not yet implemented"); | |
5231 | #endif | |
5232 | } | |
5233 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
5234 | { | |
5235 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
5236 | catch_fork_command_1 (catch_vfork, arg1_end+1, tempflag, from_tty); | |
5237 | #else | |
5238 | error ("Catch of vfork not yet implemented"); | |
5239 | #endif | |
5240 | } | |
5241 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
5242 | { | |
5243 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
5244 | catch_exec_command_1 (arg1_end+1, tempflag, from_tty); | |
5245 | #else | |
5246 | error ("Catch of exec not yet implemented"); | |
5247 | #endif | |
5248 | } | |
5249 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
5250 | { | |
5251 | #if defined(SOLIB_ADD) | |
5252 | catch_load_command_1 (arg1_end+1, tempflag, from_tty); | |
5253 | #else | |
5254 | error ("Catch of load not implemented"); | |
5255 | #endif | |
5256 | } | |
5257 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
5258 | { | |
5259 | #if defined(SOLIB_ADD) | |
5260 | catch_unload_command_1 (arg1_end+1, tempflag, from_tty); | |
5261 | #else | |
5262 | error ("Catch of load not implemented"); | |
5263 | #endif | |
5264 | } | |
5265 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
5266 | { | |
5267 | error ("Catch of stop not yet implemented"); | |
5268 | } | |
5269 | ||
5270 | /* This doesn't appear to be an event name */ | |
5271 | ||
5272 | else | |
5273 | { | |
5274 | /* Pre-v.4.16 behaviour was to treat the argument | |
5275 | as the name of an exception */ | |
5276 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ | |
5277 | /* Now this is not allowed */ | |
5278 | error ("Unknown event kind specified for catch"); | |
5279 | ||
5280 | } | |
5281 | } | |
5282 | ||
e8bf33c4 JK |
5283 | /* Used by the gui, could be made a worker for other things. */ |
5284 | ||
5285 | struct breakpoint * | |
5286 | set_breakpoint_sal (sal) | |
6b038bd9 | 5287 | struct symtab_and_line sal; |
e8bf33c4 JK |
5288 | { |
5289 | struct breakpoint *b; | |
5290 | b = set_raw_breakpoint (sal); | |
5291 | set_breakpoint_count (breakpoint_count + 1); | |
5292 | b->number = breakpoint_count; | |
5293 | b->type = bp_breakpoint; | |
5294 | b->cond = 0; | |
5295 | b->thread = -1; | |
5296 | return b; | |
5297 | } | |
5298 | ||
bdbd5f50 JG |
5299 | #if 0 |
5300 | /* These aren't used; I don't know what they were for. */ | |
bd5635a1 RP |
5301 | /* Disable breakpoints on all catch clauses described in ARGS. */ |
5302 | static void | |
5303 | disable_catch (args) | |
5304 | char *args; | |
5305 | { | |
5306 | /* Map the disable command to catch clauses described in ARGS. */ | |
5307 | } | |
5308 | ||
5309 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
5310 | static void | |
5311 | enable_catch (args) | |
5312 | char *args; | |
5313 | { | |
5314 | /* Map the disable command to catch clauses described in ARGS. */ | |
5315 | } | |
5316 | ||
5317 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
5318 | static void | |
5319 | delete_catch (args) | |
5320 | char *args; | |
5321 | { | |
5322 | /* Map the delete command to catch clauses described in ARGS. */ | |
5323 | } | |
bdbd5f50 | 5324 | #endif /* 0 */ |
bd5635a1 RP |
5325 | |
5326 | static void | |
5327 | catch_command (arg, from_tty) | |
5328 | char *arg; | |
5329 | int from_tty; | |
5330 | { | |
5331 | catch_command_1 (arg, 0, from_tty); | |
5332 | } | |
5333 | \f | |
65b07ddc DT |
5334 | |
5335 | static void | |
5336 | tcatch_command (arg, from_tty) | |
5337 | char *arg; | |
5338 | int from_tty; | |
5339 | { | |
5340 | catch_command_1 (arg, 1, from_tty); | |
5341 | } | |
5342 | ||
5343 | ||
bd5635a1 RP |
5344 | static void |
5345 | clear_command (arg, from_tty) | |
5346 | char *arg; | |
5347 | int from_tty; | |
5348 | { | |
5349 | register struct breakpoint *b, *b1; | |
65b07ddc | 5350 | int default_match; |
bd5635a1 RP |
5351 | struct symtabs_and_lines sals; |
5352 | struct symtab_and_line sal; | |
5353 | register struct breakpoint *found; | |
5354 | int i; | |
5355 | ||
5356 | if (arg) | |
5357 | { | |
5358 | sals = decode_line_spec (arg, 1); | |
65b07ddc | 5359 | default_match = 0; |
bd5635a1 RP |
5360 | } |
5361 | else | |
5362 | { | |
6b038bd9 DT |
5363 | sals.sals = (struct symtab_and_line *) |
5364 | xmalloc (sizeof (struct symtab_and_line)); | |
5365 | INIT_SAL (&sal); /* initialize to zeroes */ | |
bd5635a1 RP |
5366 | sal.line = default_breakpoint_line; |
5367 | sal.symtab = default_breakpoint_symtab; | |
65b07ddc | 5368 | sal.pc = default_breakpoint_address; |
bd5635a1 RP |
5369 | if (sal.symtab == 0) |
5370 | error ("No source file specified."); | |
5371 | ||
5372 | sals.sals[0] = sal; | |
5373 | sals.nelts = 1; | |
65b07ddc DT |
5374 | |
5375 | default_match = 1; | |
bd5635a1 RP |
5376 | } |
5377 | ||
65b07ddc DT |
5378 | /* For each line spec given, delete bps which correspond |
5379 | to it. We do this in two loops: the first loop looks at | |
5380 | the initial bp(s) in the chain which should be deleted, | |
5381 | the second goes down the rest of the chain looking ahead | |
5382 | one so it can take those bps off the chain without messing | |
5383 | up the chain. */ | |
5384 | ||
5385 | ||
bd5635a1 RP |
5386 | for (i = 0; i < sals.nelts; i++) |
5387 | { | |
5388 | /* If exact pc given, clear bpts at that pc. | |
65b07ddc DT |
5389 | If line given (pc == 0), clear all bpts on specified line. |
5390 | If defaulting, clear all bpts on default line | |
5391 | or at default pc. | |
5392 | ||
5393 | defaulting sal.pc != 0 tests to do | |
5394 | ||
5395 | 0 1 pc | |
5396 | 1 1 pc _and_ line | |
5397 | 0 0 line | |
5398 | 1 0 <can't happen> */ | |
5399 | ||
bd5635a1 RP |
5400 | sal = sals.sals[i]; |
5401 | found = (struct breakpoint *) 0; | |
6b038bd9 | 5402 | |
65b07ddc | 5403 | |
bd5635a1 | 5404 | while (breakpoint_chain |
65b07ddc DT |
5405 | /* Why don't we check here that this is not |
5406 | a watchpoint, etc., as we do below? | |
5407 | I can't make it fail, but don't know | |
5408 | what's stopping the failure: a watchpoint | |
5409 | of the same address as "sal.pc" should | |
5410 | wind up being deleted. */ | |
5411 | ||
5412 | && ( ((sal.pc && (breakpoint_chain->address == sal.pc)) && | |
5413 | (overlay_debugging == 0 || | |
5414 | breakpoint_chain->section == sal.section)) | |
5415 | || ((default_match || (0 == sal.pc)) | |
5416 | && breakpoint_chain->source_file != NULL | |
5417 | && sal.symtab != NULL | |
5418 | && STREQ (breakpoint_chain->source_file, sal.symtab->filename) | |
5419 | && breakpoint_chain->line_number == sal.line))) | |
5420 | ||
bd5635a1 RP |
5421 | { |
5422 | b1 = breakpoint_chain; | |
5423 | breakpoint_chain = b1->next; | |
5424 | b1->next = found; | |
5425 | found = b1; | |
5426 | } | |
5427 | ||
5428 | ALL_BREAKPOINTS (b) | |
65b07ddc DT |
5429 | |
5430 | while (b->next | |
5431 | && b->next->type != bp_none | |
5432 | && b->next->type != bp_watchpoint | |
5433 | && b->next->type != bp_hardware_watchpoint | |
5434 | && b->next->type != bp_read_watchpoint | |
5435 | && b->next->type != bp_access_watchpoint | |
5436 | && ( ((sal.pc && (b->next->address == sal.pc)) && | |
5437 | (overlay_debugging == 0 || | |
5438 | b->next->section == sal.section)) | |
5439 | || ((default_match || (0 == sal.pc)) | |
5440 | && b->next->source_file != NULL | |
5441 | && sal.symtab != NULL | |
5442 | && STREQ (b->next->source_file, sal.symtab->filename) | |
5443 | && b->next->line_number == sal.line))) | |
5444 | ||
5445 | ||
bd5635a1 RP |
5446 | { |
5447 | b1 = b->next; | |
5448 | b->next = b1->next; | |
5449 | b1->next = found; | |
5450 | found = b1; | |
5451 | } | |
5452 | ||
5453 | if (found == 0) | |
5454 | { | |
5455 | if (arg) | |
5456 | error ("No breakpoint at %s.", arg); | |
5457 | else | |
5458 | error ("No breakpoint at this line."); | |
5459 | } | |
5460 | ||
5461 | if (found->next) from_tty = 1; /* Always report if deleted more than one */ | |
199b2450 | 5462 | if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); |
6c803036 | 5463 | breakpoints_changed (); |
bd5635a1 RP |
5464 | while (found) |
5465 | { | |
199b2450 | 5466 | if (from_tty) printf_unfiltered ("%d ", found->number); |
bd5635a1 RP |
5467 | b1 = found->next; |
5468 | delete_breakpoint (found); | |
5469 | found = b1; | |
5470 | } | |
199b2450 | 5471 | if (from_tty) putchar_unfiltered ('\n'); |
bd5635a1 | 5472 | } |
c8950965 | 5473 | free ((PTR)sals.sals); |
bd5635a1 RP |
5474 | } |
5475 | \f | |
e51481f9 JL |
5476 | /* Delete breakpoint in BS if they are `delete' breakpoints and |
5477 | all breakpoints that are marked for deletion, whether hit or not. | |
bd5635a1 RP |
5478 | This is called after any breakpoint is hit, or after errors. */ |
5479 | ||
5480 | void | |
5481 | breakpoint_auto_delete (bs) | |
5482 | bpstat bs; | |
5483 | { | |
e51481f9 JL |
5484 | struct breakpoint *b, *temp; |
5485 | ||
bd5635a1 | 5486 | for (; bs; bs = bs->next) |
e8bf33c4 | 5487 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
cef4c2e7 | 5488 | && bs->stop) |
bd5635a1 | 5489 | delete_breakpoint (bs->breakpoint_at); |
e51481f9 JL |
5490 | |
5491 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5492 | { | |
5493 | if (b->disposition == del_at_next_stop) | |
5494 | delete_breakpoint (b); | |
5495 | } | |
bd5635a1 RP |
5496 | } |
5497 | ||
5498 | /* Delete a breakpoint and clean up all traces of it in the data structures. */ | |
5499 | ||
30875e1c | 5500 | void |
bd5635a1 RP |
5501 | delete_breakpoint (bpt) |
5502 | struct breakpoint *bpt; | |
5503 | { | |
5504 | register struct breakpoint *b; | |
5505 | register bpstat bs; | |
5506 | ||
65b07ddc DT |
5507 | if (bpt == NULL) |
5508 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
5509 | ||
5510 | ||
5511 | /* Has this bp already been deleted? This can happen because multiple | |
5512 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
5513 | ||
5514 | One example of this happening is a watchpoint's scope bp. When the | |
5515 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
5516 | delete it. We also delete its scope bp. But the scope bp is marked | |
5517 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
5518 | checked for auto-deleting bp's, which are deleted. | |
5519 | ||
5520 | A real solution to this problem might involve reference counts in bp's, | |
5521 | and/or giving them pointers back to their referencing bpstat's, and | |
5522 | teaching delete_breakpoint to only free a bp's storage when no more | |
5523 | references were extent. A cheaper bandaid was chosen. */ | |
5524 | if (bpt->type == bp_none) | |
5525 | return; | |
5526 | ||
754e5da2 SG |
5527 | if (delete_breakpoint_hook) |
5528 | delete_breakpoint_hook (bpt); | |
5529 | ||
bd5635a1 | 5530 | if (bpt->inserted) |
65b07ddc | 5531 | remove_breakpoint (bpt, mark_uninserted); |
999dd04b | 5532 | |
bd5635a1 RP |
5533 | if (breakpoint_chain == bpt) |
5534 | breakpoint_chain = bpt->next; | |
5535 | ||
65b07ddc DT |
5536 | /* If we have callback-style exception catchpoints, don't go through |
5537 | the adjustments to the C++ runtime library etc. if the inferior | |
5538 | isn't actually running. target_enable_exception_callback for a | |
5539 | null target ops vector gives an undesirable error message, so we | |
5540 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
5541 | exceptions are supported in this way, it's OK for now. FIXME */ | |
5542 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) | |
5543 | { | |
5544 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
5545 | static char message[sizeof (message1) + 30]; | |
5546 | args_for_catchpoint_enable args; | |
5547 | ||
5548 | sprintf (message, message1, bpt->number); /* Format possible error msg */ | |
5549 | args.kind = bpt->type == bp_catch_catch ? EX_EVENT_CATCH : EX_EVENT_THROW; | |
5550 | args.enable = 0; | |
5551 | (void) catch_errors ((int (*) PARAMS ((char *))) cover_target_enable_exception_callback, | |
5552 | (char *) &args, | |
5553 | message, RETURN_MASK_ALL); | |
5554 | } | |
5555 | ||
5556 | ||
bd5635a1 RP |
5557 | ALL_BREAKPOINTS (b) |
5558 | if (b->next == bpt) | |
5559 | { | |
5560 | b->next = bpt->next; | |
5561 | break; | |
5562 | } | |
5563 | ||
65b07ddc DT |
5564 | /* Before turning off the visuals for the bp, check to see that |
5565 | there are no other bps at the same address. */ | |
5566 | if (tui_version) | |
5567 | { | |
5568 | int clearIt; | |
5569 | ||
5570 | ALL_BREAKPOINTS (b) | |
5571 | { | |
5572 | clearIt = (b->address != bpt->address); | |
5573 | if (!clearIt) | |
5574 | break; | |
5575 | } | |
5576 | ||
5577 | if (clearIt) | |
5578 | { | |
5579 | TUIDO(((TuiOpaqueFuncPtr)tui_vAllSetHasBreakAt, bpt, 0)); | |
5580 | TUIDO(((TuiOpaqueFuncPtr)tuiUpdateAllExecInfos)); | |
5581 | } | |
5582 | } | |
5583 | ||
6b038bd9 | 5584 | check_duplicates (bpt->address, bpt->section); |
fe675038 JK |
5585 | /* If this breakpoint was inserted, and there is another breakpoint |
5586 | at the same address, we need to insert the other breakpoint. */ | |
999dd04b | 5587 | if (bpt->inserted |
11054881 KH |
5588 | && bpt->type != bp_hardware_watchpoint |
5589 | && bpt->type != bp_read_watchpoint | |
65b07ddc DT |
5590 | && bpt->type != bp_access_watchpoint |
5591 | && bpt->type != bp_catch_fork | |
5592 | && bpt->type != bp_catch_vfork | |
5593 | && bpt->type != bp_catch_exec) | |
fe675038 JK |
5594 | { |
5595 | ALL_BREAKPOINTS (b) | |
ebad9e90 | 5596 | if (b->address == bpt->address |
6b038bd9 | 5597 | && b->section == bpt->section |
ebad9e90 | 5598 | && !b->duplicate |
fa3764e2 | 5599 | && b->enable != disabled |
65b07ddc DT |
5600 | && b->enable != shlib_disabled |
5601 | && b->enable != call_disabled) | |
fe675038 JK |
5602 | { |
5603 | int val; | |
5604 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
5605 | if (val != 0) | |
5606 | { | |
05052b63 | 5607 | target_terminal_ours_for_output (); |
199b2450 | 5608 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
fe675038 JK |
5609 | memory_error (val, b->address); /* which bombs us out */ |
5610 | } | |
5611 | else | |
5612 | b->inserted = 1; | |
5613 | } | |
5614 | } | |
bd5635a1 RP |
5615 | |
5616 | free_command_lines (&bpt->commands); | |
5617 | if (bpt->cond) | |
d889f6b7 | 5618 | free (bpt->cond); |
bd5635a1 | 5619 | if (bpt->cond_string != NULL) |
d889f6b7 | 5620 | free (bpt->cond_string); |
bd5635a1 | 5621 | if (bpt->addr_string != NULL) |
d889f6b7 | 5622 | free (bpt->addr_string); |
39ce6829 PS |
5623 | if (bpt->exp != NULL) |
5624 | free (bpt->exp); | |
0eaaa46a | 5625 | if (bpt->exp_string != NULL) |
d889f6b7 | 5626 | free (bpt->exp_string); |
39ce6829 PS |
5627 | if (bpt->val != NULL) |
5628 | value_free (bpt->val); | |
d889f6b7 JK |
5629 | if (bpt->source_file != NULL) |
5630 | free (bpt->source_file); | |
65b07ddc DT |
5631 | if (bpt->dll_pathname != NULL) |
5632 | free (bpt->dll_pathname); | |
5633 | if (bpt->triggered_dll_pathname != NULL) | |
5634 | free (bpt->triggered_dll_pathname); | |
5635 | if (bpt->exec_pathname != NULL) | |
5636 | free (bpt->exec_pathname); | |
bd5635a1 | 5637 | |
bd5635a1 | 5638 | /* Be sure no bpstat's are pointing at it after it's been freed. */ |
05052b63 JK |
5639 | /* FIXME, how can we find all bpstat's? |
5640 | We just check stop_bpstat for now. */ | |
bd5635a1 RP |
5641 | for (bs = stop_bpstat; bs; bs = bs->next) |
5642 | if (bs->breakpoint_at == bpt) | |
65b07ddc DT |
5643 | { |
5644 | bs->breakpoint_at = NULL; | |
5645 | ||
5646 | /* we'd call bpstat_clear_actions, but that free's stuff and due | |
5647 | to the multiple pointers pointing to one item with no | |
5648 | reference counts found anywhere through out the bpstat's (how | |
5649 | do you spell fragile?), we don't want to free things twice -- | |
5650 | better a memory leak than a corrupt malloc pool! */ | |
5651 | bs->commands = NULL; | |
5652 | bs->old_val = NULL; | |
5653 | } | |
5654 | /* On the chance that someone will soon try again to delete this same | |
5655 | bp, we mark it as deleted before freeing its storage. */ | |
5656 | bpt->type = bp_none; | |
5657 | ||
c8950965 | 5658 | free ((PTR)bpt); |
bd5635a1 RP |
5659 | } |
5660 | ||
895cc8ab | 5661 | void |
bd5635a1 RP |
5662 | delete_command (arg, from_tty) |
5663 | char *arg; | |
5664 | int from_tty; | |
5665 | { | |
6b038bd9 | 5666 | struct breakpoint *b, *temp; |
bd5635a1 RP |
5667 | |
5668 | if (arg == 0) | |
5669 | { | |
895cc8ab KS |
5670 | int breaks_to_delete = 0; |
5671 | ||
5672 | /* Delete all breakpoints if no argument. | |
5673 | Do not delete internal or call-dummy breakpoints, these | |
5674 | have to be deleted with an explicit breakpoint number argument. */ | |
5675 | ALL_BREAKPOINTS (b) | |
5676 | { | |
65b07ddc DT |
5677 | if (b->type != bp_call_dummy && |
5678 | b->type != bp_shlib_event && | |
5679 | b->number >= 0) | |
895cc8ab KS |
5680 | breaks_to_delete = 1; |
5681 | } | |
5682 | ||
bd5635a1 RP |
5683 | /* Ask user only if there are some breakpoints to delete. */ |
5684 | if (!from_tty | |
895cc8ab | 5685 | || (breaks_to_delete && query ("Delete all breakpoints? "))) |
bd5635a1 | 5686 | { |
895cc8ab KS |
5687 | ALL_BREAKPOINTS_SAFE (b, temp) |
5688 | { | |
65b07ddc DT |
5689 | if (b->type != bp_call_dummy && |
5690 | b->type != bp_shlib_event && | |
5691 | b->number >= 0) | |
895cc8ab KS |
5692 | delete_breakpoint (b); |
5693 | } | |
bd5635a1 RP |
5694 | } |
5695 | } | |
5696 | else | |
5697 | map_breakpoint_numbers (arg, delete_breakpoint); | |
5698 | } | |
5699 | ||
bdbd5f50 JG |
5700 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
5701 | The value we return ends up being the return value from catch_errors. | |
5702 | Unused in this case. */ | |
5703 | ||
5704 | static int | |
bd5635a1 | 5705 | breakpoint_re_set_one (bint) |
bdbd5f50 | 5706 | char *bint; |
bd5635a1 RP |
5707 | { |
5708 | struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */ | |
11054881 | 5709 | struct value *mark; |
bd5635a1 RP |
5710 | int i; |
5711 | struct symtabs_and_lines sals; | |
bd5635a1 | 5712 | char *s; |
30875e1c | 5713 | enum enable save_enable; |
bd5635a1 | 5714 | |
80ba48f5 | 5715 | switch (b->type) |
bd5635a1 | 5716 | { |
65b07ddc DT |
5717 | case bp_none: |
5718 | warning ("attempted to reset apparently deleted breakpoint #%d?\n", b->number); | |
5719 | return 0; | |
80ba48f5 | 5720 | case bp_breakpoint: |
11054881 | 5721 | case bp_hardware_breakpoint: |
65b07ddc DT |
5722 | case bp_catch_load: |
5723 | case bp_catch_unload: | |
80ba48f5 SG |
5724 | if (b->addr_string == NULL) |
5725 | { | |
5726 | /* Anything without a string can't be re-set. */ | |
5727 | delete_breakpoint (b); | |
5728 | return 0; | |
5729 | } | |
30875e1c SG |
5730 | /* In case we have a problem, disable this breakpoint. We'll restore |
5731 | its status if we succeed. */ | |
5732 | save_enable = b->enable; | |
5733 | b->enable = disabled; | |
5734 | ||
706dc3ce JL |
5735 | set_language (b->language); |
5736 | input_radix = b->input_radix; | |
bd5635a1 | 5737 | s = b->addr_string; |
d889f6b7 | 5738 | sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
5739 | for (i = 0; i < sals.nelts; i++) |
5740 | { | |
30875e1c | 5741 | resolve_sal_pc (&sals.sals[i]); |
fee933f1 RP |
5742 | |
5743 | /* Reparse conditions, they might contain references to the | |
5744 | old symtab. */ | |
5745 | if (b->cond_string != NULL) | |
5746 | { | |
5747 | s = b->cond_string; | |
5748 | if (b->cond) | |
5749 | free ((PTR)b->cond); | |
5750 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); | |
5751 | } | |
5752 | ||
5753 | /* We need to re-set the breakpoint if the address changes...*/ | |
d889f6b7 | 5754 | if (b->address != sals.sals[i].pc |
fee933f1 RP |
5755 | /* ...or new and old breakpoints both have source files, and |
5756 | the source file name or the line number changes... */ | |
d889f6b7 JK |
5757 | || (b->source_file != NULL |
5758 | && sals.sals[i].symtab != NULL | |
5759 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
5760 | || b->line_number != sals.sals[i].line) | |
fee933f1 RP |
5761 | ) |
5762 | /* ...or we switch between having a source file and not having | |
5763 | one. */ | |
5764 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
5765 | ) | |
bd5635a1 | 5766 | { |
d889f6b7 JK |
5767 | if (b->source_file != NULL) |
5768 | free (b->source_file); | |
5769 | if (sals.sals[i].symtab == NULL) | |
5770 | b->source_file = NULL; | |
5771 | else | |
5772 | b->source_file = | |
5773 | savestring (sals.sals[i].symtab->filename, | |
5774 | strlen (sals.sals[i].symtab->filename)); | |
8537ba60 SG |
5775 | b->line_number = sals.sals[i].line; |
5776 | b->address = sals.sals[i].pc; | |
65b07ddc DT |
5777 | |
5778 | /* Used to check for duplicates here, but that can | |
5779 | cause trouble, as it doesn't check for disable | |
5780 | breakpoints. */ | |
bd5635a1 | 5781 | |
8537ba60 | 5782 | mention (b); |
6c803036 JK |
5783 | |
5784 | /* Might be better to do this just once per breakpoint_re_set, | |
5785 | rather than once for every breakpoint. */ | |
5786 | breakpoints_changed (); | |
8537ba60 | 5787 | } |
6b038bd9 | 5788 | b->section = sals.sals[i].section; |
30875e1c | 5789 | b->enable = save_enable; /* Restore it, this worked. */ |
65b07ddc DT |
5790 | |
5791 | ||
5792 | /* Now that this is re-enabled, check_duplicates | |
5793 | can be used. */ | |
5794 | check_duplicates (b->address, b->section); | |
5795 | ||
bd5635a1 | 5796 | } |
c8950965 | 5797 | free ((PTR)sals.sals); |
80ba48f5 | 5798 | break; |
2d313932 | 5799 | |
80ba48f5 | 5800 | case bp_watchpoint: |
999dd04b | 5801 | case bp_hardware_watchpoint: |
11054881 KH |
5802 | case bp_read_watchpoint: |
5803 | case bp_access_watchpoint: | |
0eaaa46a | 5804 | innermost_block = NULL; |
0a97f6c4 JK |
5805 | /* The issue arises of what context to evaluate this in. The same |
5806 | one as when it was set, but what does that mean when symbols have | |
5807 | been re-read? We could save the filename and functionname, but | |
5808 | if the context is more local than that, the best we could do would | |
5809 | be something like how many levels deep and which index at that | |
5810 | particular level, but that's going to be less stable than filenames | |
5811 | or functionnames. */ | |
5812 | /* So for now, just use a global context. */ | |
39ce6829 PS |
5813 | if (b->exp) |
5814 | free ((PTR)b->exp); | |
0eaaa46a JK |
5815 | b->exp = parse_expression (b->exp_string); |
5816 | b->exp_valid_block = innermost_block; | |
11054881 | 5817 | mark = value_mark (); |
39ce6829 PS |
5818 | if (b->val) |
5819 | value_free (b->val); | |
0eaaa46a JK |
5820 | b->val = evaluate_expression (b->exp); |
5821 | release_value (b->val); | |
5822 | if (VALUE_LAZY (b->val)) | |
5823 | value_fetch_lazy (b->val); | |
5824 | ||
2d313932 JK |
5825 | if (b->cond_string != NULL) |
5826 | { | |
5827 | s = b->cond_string; | |
39ce6829 PS |
5828 | if (b->cond) |
5829 | free ((PTR)b->cond); | |
2d313932 JK |
5830 | b->cond = parse_exp_1 (&s, (struct block *)0, 0); |
5831 | } | |
cabd4da6 JK |
5832 | if (b->enable == enabled) |
5833 | mention (b); | |
11054881 | 5834 | value_free_to_mark (mark); |
80ba48f5 | 5835 | break; |
65b07ddc DT |
5836 | case bp_catch_catch: |
5837 | case bp_catch_throw: | |
5838 | break; | |
5839 | /* We needn't really do anything to reset these, since the mask | |
5840 | that requests them is unaffected by e.g., new libraries being | |
5841 | loaded. */ | |
5842 | case bp_catch_fork: | |
5843 | case bp_catch_vfork: | |
5844 | case bp_catch_exec: | |
5845 | break; | |
5846 | ||
80ba48f5 SG |
5847 | default: |
5848 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
2d313932 | 5849 | /* fall through */ |
fa3764e2 JL |
5850 | /* Delete longjmp breakpoints, they will be reset later by |
5851 | breakpoint_re_set. */ | |
80ba48f5 SG |
5852 | case bp_longjmp: |
5853 | case bp_longjmp_resume: | |
5854 | delete_breakpoint (b); | |
5855 | break; | |
27b6a1fa JL |
5856 | |
5857 | /* This breakpoint is special, it's set up when the inferior | |
5858 | starts and we really don't want to touch it. */ | |
5859 | case bp_shlib_event: | |
fa3764e2 JL |
5860 | |
5861 | /* Keep temporary breakpoints, which can be encountered when we step | |
5862 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
5863 | Otherwise these should have been blown away via the cleanup chain | |
5864 | or by breakpoint_init_inferior when we rerun the executable. */ | |
5865 | case bp_until: | |
5866 | case bp_finish: | |
5867 | case bp_watchpoint_scope: | |
5868 | case bp_call_dummy: | |
5869 | case bp_step_resume: | |
27b6a1fa | 5870 | break; |
bd5635a1 | 5871 | } |
80ba48f5 | 5872 | |
bdbd5f50 | 5873 | return 0; |
bd5635a1 RP |
5874 | } |
5875 | ||
5876 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
5877 | void | |
5878 | breakpoint_re_set () | |
5879 | { | |
cba0d141 | 5880 | struct breakpoint *b, *temp; |
706dc3ce JL |
5881 | enum language save_language; |
5882 | int save_input_radix; | |
30875e1c SG |
5883 | static char message1[] = "Error in re-setting breakpoint %d:\n"; |
5884 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 | 5885 | |
706dc3ce JL |
5886 | save_language = current_language->la_language; |
5887 | save_input_radix = input_radix; | |
cba0d141 | 5888 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 5889 | { |
2d313932 | 5890 | sprintf (message, message1, b->number); /* Format possible error msg */ |
65b07ddc | 5891 | catch_errors ((int (*) PARAMS ((char *))) breakpoint_re_set_one, (char *) b, message, |
fe675038 | 5892 | RETURN_MASK_ALL); |
bd5635a1 | 5893 | } |
706dc3ce JL |
5894 | set_language (save_language); |
5895 | input_radix = save_input_radix; | |
bd5635a1 | 5896 | |
cd10c7e3 SG |
5897 | #ifdef GET_LONGJMP_TARGET |
5898 | create_longjmp_breakpoint ("longjmp"); | |
5899 | create_longjmp_breakpoint ("_longjmp"); | |
5900 | create_longjmp_breakpoint ("siglongjmp"); | |
6b038bd9 | 5901 | create_longjmp_breakpoint ("_siglongjmp"); |
cd10c7e3 SG |
5902 | create_longjmp_breakpoint (NULL); |
5903 | #endif | |
80ba48f5 | 5904 | |
1eeba686 | 5905 | #if 0 |
0fe1522a | 5906 | /* Took this out (temporarily at least), since it produces an extra |
1eeba686 | 5907 | blank line at startup. This messes up the gdbtests. -PB */ |
bd5635a1 RP |
5908 | /* Blank line to finish off all those mention() messages we just printed. */ |
5909 | printf_filtered ("\n"); | |
1eeba686 | 5910 | #endif |
bd5635a1 RP |
5911 | } |
5912 | \f | |
5913 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
5914 | If from_tty is nonzero, it prints a message to that effect, | |
5915 | which ends with a period (no newline). */ | |
5916 | ||
65b07ddc DT |
5917 | /* Reset the thread number of this breakpoint: |
5918 | ||
5919 | - If the breakpoint is for all threads, leave it as-is. | |
5920 | - Else, reset it to the current thread for inferior_pid. */ | |
5921 | void | |
5922 | breakpoint_re_set_thread (b) | |
5923 | struct breakpoint * b; | |
5924 | { | |
5925 | if (b->thread != -1) | |
5926 | { | |
5927 | if (in_thread_list (inferior_pid)) | |
5928 | b->thread = pid_to_thread_id (inferior_pid); | |
5929 | } | |
5930 | } | |
5931 | ||
bd5635a1 RP |
5932 | void |
5933 | set_ignore_count (bptnum, count, from_tty) | |
5934 | int bptnum, count, from_tty; | |
5935 | { | |
5936 | register struct breakpoint *b; | |
5937 | ||
5938 | if (count < 0) | |
5939 | count = 0; | |
5940 | ||
5941 | ALL_BREAKPOINTS (b) | |
5942 | if (b->number == bptnum) | |
5943 | { | |
5944 | b->ignore_count = count; | |
5945 | if (!from_tty) | |
5946 | return; | |
5947 | else if (count == 0) | |
423e9664 SG |
5948 | printf_filtered ("Will stop next time breakpoint %d is reached.", |
5949 | bptnum); | |
bd5635a1 | 5950 | else if (count == 1) |
423e9664 SG |
5951 | printf_filtered ("Will ignore next crossing of breakpoint %d.", |
5952 | bptnum); | |
bd5635a1 | 5953 | else |
423e9664 | 5954 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", |
bd5635a1 | 5955 | count, bptnum); |
6c803036 | 5956 | breakpoints_changed (); |
bd5635a1 RP |
5957 | return; |
5958 | } | |
5959 | ||
5960 | error ("No breakpoint number %d.", bptnum); | |
5961 | } | |
5962 | ||
5963 | /* Clear the ignore counts of all breakpoints. */ | |
5964 | void | |
5965 | breakpoint_clear_ignore_counts () | |
5966 | { | |
5967 | struct breakpoint *b; | |
5968 | ||
5969 | ALL_BREAKPOINTS (b) | |
5970 | b->ignore_count = 0; | |
5971 | } | |
5972 | ||
5973 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
5974 | ||
5975 | static void | |
5976 | ignore_command (args, from_tty) | |
5977 | char *args; | |
5978 | int from_tty; | |
5979 | { | |
5980 | char *p = args; | |
5981 | register int num; | |
5982 | ||
5983 | if (p == 0) | |
5984 | error_no_arg ("a breakpoint number"); | |
5985 | ||
5986 | num = get_number (&p); | |
5987 | ||
5988 | if (*p == 0) | |
5989 | error ("Second argument (specified ignore-count) is missing."); | |
5990 | ||
bdbd5f50 JG |
5991 | set_ignore_count (num, |
5992 | longest_to_int (value_as_long (parse_and_eval (p))), | |
5993 | from_tty); | |
423e9664 | 5994 | printf_filtered ("\n"); |
6c803036 | 5995 | breakpoints_changed (); |
bd5635a1 RP |
5996 | } |
5997 | \f | |
5998 | /* Call FUNCTION on each of the breakpoints | |
5999 | whose numbers are given in ARGS. */ | |
6000 | ||
6001 | static void | |
6002 | map_breakpoint_numbers (args, function) | |
6003 | char *args; | |
30875e1c | 6004 | void (*function) PARAMS ((struct breakpoint *)); |
bd5635a1 RP |
6005 | { |
6006 | register char *p = args; | |
6007 | char *p1; | |
6008 | register int num; | |
6009 | register struct breakpoint *b; | |
6010 | ||
6011 | if (p == 0) | |
6012 | error_no_arg ("one or more breakpoint numbers"); | |
6013 | ||
6014 | while (*p) | |
6015 | { | |
6016 | p1 = p; | |
6017 | ||
6018 | num = get_number (&p1); | |
6019 | ||
6020 | ALL_BREAKPOINTS (b) | |
6021 | if (b->number == num) | |
6022 | { | |
999dd04b | 6023 | struct breakpoint *related_breakpoint = b->related_breakpoint; |
bd5635a1 | 6024 | function (b); |
999dd04b JL |
6025 | if (related_breakpoint) |
6026 | function (related_breakpoint); | |
bd5635a1 RP |
6027 | goto win; |
6028 | } | |
199b2450 | 6029 | printf_unfiltered ("No breakpoint number %d.\n", num); |
bd5635a1 RP |
6030 | win: |
6031 | p = p1; | |
6032 | } | |
6033 | } | |
6034 | ||
e8bf33c4 | 6035 | void |
bd5635a1 RP |
6036 | disable_breakpoint (bpt) |
6037 | struct breakpoint *bpt; | |
6038 | { | |
999dd04b JL |
6039 | /* Never disable a watchpoint scope breakpoint; we want to |
6040 | hit them when we leave scope so we can delete both the | |
6041 | watchpoint and its scope breakpoint at that time. */ | |
6042 | if (bpt->type == bp_watchpoint_scope) | |
6043 | return; | |
6044 | ||
bd5635a1 RP |
6045 | bpt->enable = disabled; |
6046 | ||
6b038bd9 | 6047 | check_duplicates (bpt->address, bpt->section); |
e8bf33c4 JK |
6048 | |
6049 | if (modify_breakpoint_hook) | |
6050 | modify_breakpoint_hook (bpt); | |
bd5635a1 RP |
6051 | } |
6052 | ||
bdbd5f50 | 6053 | /* ARGSUSED */ |
bd5635a1 RP |
6054 | static void |
6055 | disable_command (args, from_tty) | |
6056 | char *args; | |
6057 | int from_tty; | |
6058 | { | |
6059 | register struct breakpoint *bpt; | |
6060 | if (args == 0) | |
6061 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
6062 | switch (bpt->type) |
6063 | { | |
65b07ddc DT |
6064 | case bp_none: |
6065 | warning ("attempted to disable apparently deleted breakpoint #%d?\n", bpt->number); | |
6066 | continue; | |
423e9664 | 6067 | case bp_breakpoint: |
65b07ddc DT |
6068 | case bp_catch_load: |
6069 | case bp_catch_unload: | |
6070 | case bp_catch_fork: | |
6071 | case bp_catch_vfork: | |
6072 | case bp_catch_exec: | |
6073 | case bp_catch_catch: | |
6074 | case bp_catch_throw: | |
11054881 KH |
6075 | case bp_hardware_breakpoint: |
6076 | case bp_watchpoint: | |
6077 | case bp_hardware_watchpoint: | |
6078 | case bp_read_watchpoint: | |
6079 | case bp_access_watchpoint: | |
423e9664 SG |
6080 | disable_breakpoint (bpt); |
6081 | default: | |
6082 | continue; | |
6083 | } | |
bd5635a1 RP |
6084 | else |
6085 | map_breakpoint_numbers (args, disable_breakpoint); | |
6086 | } | |
6087 | ||
6088 | static void | |
3f37b696 | 6089 | do_enable_breakpoint (bpt, disposition) |
bd5635a1 | 6090 | struct breakpoint *bpt; |
3f37b696 | 6091 | enum bpdisp disposition; |
bd5635a1 | 6092 | { |
706dc3ce | 6093 | struct frame_info *save_selected_frame = NULL; |
11054881 KH |
6094 | int save_selected_frame_level = -1; |
6095 | int target_resources_ok, other_type_used; | |
6096 | struct value *mark; | |
6097 | ||
3f37b696 FF |
6098 | if (bpt->type == bp_hardware_breakpoint) |
6099 | { | |
11054881 KH |
6100 | int i; |
6101 | i = hw_breakpoint_used_count(); | |
6102 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
6103 | bp_hardware_breakpoint, i+1, 0); | |
6104 | if (target_resources_ok == 0) | |
6105 | error ("No hardware breakpoint support in the target."); | |
6106 | else if (target_resources_ok < 0) | |
6107 | error ("Hardware breakpoints used exceeds limit."); | |
6108 | } | |
6109 | ||
30875e1c | 6110 | bpt->enable = enabled; |
3f37b696 | 6111 | bpt->disposition = disposition; |
6b038bd9 | 6112 | check_duplicates (bpt->address, bpt->section); |
6c803036 | 6113 | breakpoints_changed (); |
11054881 KH |
6114 | |
6115 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
6116 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
6117 | { | |
6118 | if (bpt->exp_valid_block != NULL) | |
6119 | { | |
706dc3ce | 6120 | struct frame_info *fr = |
65b07ddc DT |
6121 | |
6122 | /* Ensure that we have the current frame. Else, this | |
6123 | next query may pessimistically be answered as, "No, | |
6124 | not within current scope". */ | |
6125 | get_current_frame (); | |
6126 | fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
11054881 KH |
6127 | if (fr == NULL) |
6128 | { | |
6129 | printf_filtered ("\ | |
6130 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
6131 | is valid is not currently in scope.\n", bpt->number); | |
6132 | bpt->enable = disabled; | |
6133 | return; | |
6134 | } | |
6135 | ||
6136 | save_selected_frame = selected_frame; | |
6137 | save_selected_frame_level = selected_frame_level; | |
6138 | select_frame (fr, -1); | |
6139 | } | |
6140 | ||
6141 | value_free (bpt->val); | |
6142 | mark = value_mark (); | |
6143 | bpt->val = evaluate_expression (bpt->exp); | |
6144 | release_value (bpt->val); | |
6145 | if (VALUE_LAZY (bpt->val)) | |
6146 | value_fetch_lazy (bpt->val); | |
6147 | ||
6148 | if (bpt->type == bp_hardware_watchpoint || | |
6149 | bpt->type == bp_read_watchpoint || | |
6150 | bpt->type == bp_access_watchpoint) | |
6151 | { | |
6152 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3f37b696 FF |
6153 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); |
6154 | ||
ad3b8c4a JM |
6155 | /* Hack around 'unused var' error for some targets here */ |
6156 | (void) mem_cnt, i; | |
11054881 | 6157 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( |
3f37b696 | 6158 | bpt->type, i + mem_cnt, other_type_used); |
11054881 KH |
6159 | /* we can consider of type is bp_hardware_watchpoint, convert to |
6160 | bp_watchpoint in the following condition */ | |
6161 | if (target_resources_ok < 0) | |
6162 | { | |
6163 | printf_filtered("\ | |
6164 | Cannot enable watchpoint %d because target watch resources\n\ | |
6165 | have been allocated for other watchpoints.\n", bpt->number); | |
3f37b696 FF |
6166 | bpt->enable = disabled; |
6167 | value_free_to_mark (mark); | |
6168 | return; | |
11054881 KH |
6169 | } |
6170 | } | |
6171 | ||
6172 | if (save_selected_frame_level >= 0) | |
65b07ddc | 6173 | select_and_print_frame (save_selected_frame, save_selected_frame_level); |
11054881 KH |
6174 | value_free_to_mark (mark); |
6175 | } | |
3f37b696 FF |
6176 | if (modify_breakpoint_hook) |
6177 | modify_breakpoint_hook (bpt); | |
6178 | } | |
6179 | ||
6180 | void | |
6181 | enable_breakpoint (bpt) | |
6182 | struct breakpoint *bpt; | |
6183 | { | |
895cc8ab | 6184 | do_enable_breakpoint (bpt, bpt->disposition); |
3f37b696 FF |
6185 | } |
6186 | ||
6187 | /* The enable command enables the specified breakpoints (or all defined | |
6188 | breakpoints) so they once again become (or continue to be) effective | |
6189 | in stopping the inferior. */ | |
6190 | ||
6191 | /* ARGSUSED */ | |
6192 | static void | |
6193 | enable_command (args, from_tty) | |
6194 | char *args; | |
6195 | int from_tty; | |
6196 | { | |
6197 | register struct breakpoint *bpt; | |
6198 | if (args == 0) | |
6199 | ALL_BREAKPOINTS (bpt) | |
6200 | switch (bpt->type) | |
6201 | { | |
65b07ddc DT |
6202 | case bp_none: |
6203 | warning ("attempted to enable apparently deleted breakpoint #%d?\n", bpt->number); | |
6204 | continue; | |
3f37b696 | 6205 | case bp_breakpoint: |
65b07ddc DT |
6206 | case bp_catch_load: |
6207 | case bp_catch_unload: | |
6208 | case bp_catch_fork: | |
6209 | case bp_catch_vfork: | |
6210 | case bp_catch_exec: | |
6211 | case bp_catch_catch: | |
6212 | case bp_catch_throw: | |
3f37b696 FF |
6213 | case bp_hardware_breakpoint: |
6214 | case bp_watchpoint: | |
6215 | case bp_hardware_watchpoint: | |
6216 | case bp_read_watchpoint: | |
6217 | case bp_access_watchpoint: | |
6218 | enable_breakpoint (bpt); | |
6219 | default: | |
6220 | continue; | |
6221 | } | |
6222 | else | |
6223 | map_breakpoint_numbers (args, enable_breakpoint); | |
6224 | } | |
6225 | ||
6226 | static void | |
6227 | enable_once_breakpoint (bpt) | |
6228 | struct breakpoint *bpt; | |
6229 | { | |
6230 | do_enable_breakpoint (bpt, disable); | |
bd5635a1 RP |
6231 | } |
6232 | ||
bdbd5f50 | 6233 | /* ARGSUSED */ |
bd5635a1 RP |
6234 | static void |
6235 | enable_once_command (args, from_tty) | |
6236 | char *args; | |
6237 | int from_tty; | |
6238 | { | |
6239 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
6240 | } | |
6241 | ||
6242 | static void | |
6243 | enable_delete_breakpoint (bpt) | |
6244 | struct breakpoint *bpt; | |
6245 | { | |
3f37b696 | 6246 | do_enable_breakpoint (bpt, del); |
bd5635a1 RP |
6247 | } |
6248 | ||
bdbd5f50 | 6249 | /* ARGSUSED */ |
bd5635a1 RP |
6250 | static void |
6251 | enable_delete_command (args, from_tty) | |
6252 | char *args; | |
6253 | int from_tty; | |
6254 | { | |
6255 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
6256 | } | |
6257 | \f | |
706dc3ce JL |
6258 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
6259 | ||
bd5635a1 RP |
6260 | struct symtabs_and_lines |
6261 | decode_line_spec_1 (string, funfirstline) | |
6262 | char *string; | |
6263 | int funfirstline; | |
6264 | { | |
6265 | struct symtabs_and_lines sals; | |
6266 | if (string == 0) | |
6267 | error ("Empty line specification."); | |
6268 | if (default_breakpoint_valid) | |
6269 | sals = decode_line_1 (&string, funfirstline, | |
d889f6b7 JK |
6270 | default_breakpoint_symtab, default_breakpoint_line, |
6271 | (char ***)NULL); | |
bd5635a1 | 6272 | else |
d889f6b7 JK |
6273 | sals = decode_line_1 (&string, funfirstline, |
6274 | (struct symtab *)NULL, 0, (char ***)NULL); | |
bd5635a1 RP |
6275 | if (*string) |
6276 | error ("Junk at end of line specification: %s", string); | |
6277 | return sals; | |
6278 | } | |
6279 | \f | |
bd5635a1 RP |
6280 | void |
6281 | _initialize_breakpoint () | |
6282 | { | |
65b07ddc DT |
6283 | struct cmd_list_element *c; |
6284 | ||
bd5635a1 RP |
6285 | breakpoint_chain = 0; |
6286 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
6287 | before a breakpoint is set. */ | |
6288 | breakpoint_count = 0; | |
6289 | ||
6290 | add_com ("ignore", class_breakpoint, ignore_command, | |
557f3a0e SS |
6291 | "Set ignore-count of breakpoint number N to COUNT.\n\ |
6292 | Usage is `ignore N COUNT'."); | |
65b07ddc DT |
6293 | if (xdb_commands) |
6294 | add_com_alias("bc", "ignore", class_breakpoint, 1); | |
bd5635a1 RP |
6295 | |
6296 | add_com ("commands", class_breakpoint, commands_command, | |
6297 | "Set commands to be executed when a breakpoint is hit.\n\ | |
6298 | Give breakpoint number as argument after \"commands\".\n\ | |
6299 | With no argument, the targeted breakpoint is the last one set.\n\ | |
6300 | The commands themselves follow starting on the next line.\n\ | |
6301 | Type a line containing \"end\" to indicate the end of them.\n\ | |
6302 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
6303 | then no output is printed when it is hit, except what the commands print."); | |
6304 | ||
6305 | add_com ("condition", class_breakpoint, condition_command, | |
6306 | "Specify breakpoint number N to break only if COND is true.\n\ | |
557f3a0e SS |
6307 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
6308 | expression to be evaluated whenever breakpoint N is reached. "); | |
bd5635a1 RP |
6309 | |
6310 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
6311 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c4de6b30 JK |
6312 | Like \"break\" except the breakpoint is only temporary,\n\ |
6313 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
6314 | by using \"enable delete\" on the breakpoint number."); | |
65b07ddc DT |
6315 | add_com("txbreak", class_breakpoint, tbreak_at_finish_command, |
6316 | "Set temporary breakpoint at procedure exit. Either there should\n\ | |
6317 | be no argument or the argument must be a depth.\n"); | |
bd5635a1 | 6318 | |
11054881 KH |
6319 | add_com ("hbreak", class_breakpoint, hbreak_command, |
6320 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
6321 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
6322 | some target hardware may not have this support."); | |
6323 | ||
6324 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
6325 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
6326 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
6327 | so it will be deleted when hit."); | |
6328 | ||
bd5635a1 RP |
6329 | add_prefix_cmd ("enable", class_breakpoint, enable_command, |
6330 | "Enable some breakpoints.\n\ | |
6331 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
6332 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
6333 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6334 | With a subcommand you can enable temporarily.", | |
6335 | &enablelist, "enable ", 1, &cmdlist); | |
65b07ddc DT |
6336 | if (xdb_commands) |
6337 | add_com("ab", class_breakpoint, enable_command, | |
6338 | "Enable some breakpoints.\n\ | |
6339 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
6340 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
6341 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6342 | With a subcommand you can enable temporarily."); | |
bd5635a1 | 6343 | |
895cc8ab KS |
6344 | add_com_alias ("en", "enable", class_breakpoint, 1); |
6345 | ||
bd5635a1 RP |
6346 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, |
6347 | "Enable some breakpoints.\n\ | |
6348 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
6349 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6350 | May be abbreviated to simply \"enable\".\n", | |
6351 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); | |
6352 | ||
6353 | add_cmd ("once", no_class, enable_once_command, | |
6354 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 6355 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
6356 | &enablebreaklist); |
6357 | ||
6358 | add_cmd ("delete", no_class, enable_delete_command, | |
6359 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
6360 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
6361 | &enablebreaklist); | |
6362 | ||
6363 | add_cmd ("delete", no_class, enable_delete_command, | |
6364 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
6365 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
6366 | &enablelist); | |
6367 | ||
6368 | add_cmd ("once", no_class, enable_once_command, | |
6369 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 6370 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
6371 | &enablelist); |
6372 | ||
6373 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
6374 | "Disable some breakpoints.\n\ | |
6375 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6376 | To disable all breakpoints, give no argument.\n\ | |
6377 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
6378 | &disablelist, "disable ", 1, &cmdlist); | |
6379 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
6380 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
65b07ddc DT |
6381 | if (xdb_commands) |
6382 | add_com("sb", class_breakpoint, disable_command, | |
6383 | "Disable some breakpoints.\n\ | |
6384 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6385 | To disable all breakpoints, give no argument.\n\ | |
6386 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
bd5635a1 RP |
6387 | |
6388 | add_cmd ("breakpoints", class_alias, disable_command, | |
6389 | "Disable some breakpoints.\n\ | |
6390 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6391 | To disable all breakpoints, give no argument.\n\ | |
6392 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
6393 | This command may be abbreviated \"disable\".", | |
6394 | &disablelist); | |
6395 | ||
6396 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
6397 | "Delete some breakpoints or auto-display expressions.\n\ | |
6398 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6399 | To delete all breakpoints, give no argument.\n\ | |
6400 | \n\ | |
6401 | Also a prefix command for deletion of other GDB objects.\n\ | |
6402 | The \"unset\" command is also an alias for \"delete\".", | |
6403 | &deletelist, "delete ", 1, &cmdlist); | |
6404 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
65b07ddc DT |
6405 | if (xdb_commands) |
6406 | add_com ("db", class_breakpoint, delete_command, | |
6407 | "Delete some breakpoints.\n\ | |
6408 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6409 | To delete all breakpoints, give no argument.\n"); | |
bd5635a1 RP |
6410 | |
6411 | add_cmd ("breakpoints", class_alias, delete_command, | |
6412 | "Delete some breakpoints or auto-display expressions.\n\ | |
6413 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6414 | To delete all breakpoints, give no argument.\n\ | |
6415 | This command may be abbreviated \"delete\".", | |
6416 | &deletelist); | |
6417 | ||
6418 | add_com ("clear", class_breakpoint, clear_command, | |
706dc3ce | 6419 | concat ("Clear breakpoint at specified line or function.\n\ |
bd5635a1 RP |
6420 | Argument may be line number, function name, or \"*\" and an address.\n\ |
6421 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
6422 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
706dc3ce JL |
6423 | If an address is specified, breakpoints at that address are cleared.\n\n", |
6424 | "With no argument, clears all breakpoints in the line that the selected frame\n\ | |
bd5635a1 RP |
6425 | is executing in.\n\ |
6426 | \n\ | |
706dc3ce | 6427 | See also the \"delete\" command which clears breakpoints by number.", NULL)); |
bd5635a1 RP |
6428 | |
6429 | add_com ("break", class_breakpoint, break_command, | |
706dc3ce | 6430 | concat ("Set breakpoint at specified line or function.\n\ |
bd5635a1 RP |
6431 | Argument may be line number, function name, or \"*\" and an address.\n\ |
6432 | If line number is specified, break at start of code for that line.\n\ | |
6433 | If function is specified, break at start of code for that function.\n\ | |
706dc3ce JL |
6434 | If an address is specified, break at that exact address.\n", |
6435 | "With no arg, uses current execution address of selected stack frame.\n\ | |
bd5635a1 RP |
6436 | This is useful for breaking on return to a stack frame.\n\ |
6437 | \n\ | |
6438 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
6439 | \n\ | |
706dc3ce | 6440 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); |
bd5635a1 RP |
6441 | add_com_alias ("b", "break", class_run, 1); |
6442 | add_com_alias ("br", "break", class_run, 1); | |
6443 | add_com_alias ("bre", "break", class_run, 1); | |
6444 | add_com_alias ("brea", "break", class_run, 1); | |
6445 | ||
65b07ddc DT |
6446 | add_com("xbreak", class_breakpoint, break_at_finish_command, |
6447 | concat("Set breakpoint at procedure exit. \n\ | |
6448 | Argument may be function name, or \"*\" and an address.\n\ | |
6449 | If function is specified, break at end of code for that function.\n\ | |
6450 | If an address is specified, break at the end of the function that contains \n\ | |
6451 | that exact address.\n", | |
6452 | "With no arg, uses current execution address of selected stack frame.\n\ | |
6453 | This is useful for breaking on return to a stack frame.\n\ | |
6454 | \n\ | |
6455 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
6456 | \n\ | |
6457 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
6458 | add_com_alias ("xb", "xbreak", class_breakpoint, 1); | |
6459 | add_com_alias ("xbr", "xbreak", class_breakpoint, 1); | |
6460 | add_com_alias ("xbre", "xbreak", class_breakpoint, 1); | |
6461 | add_com_alias ("xbrea", "xbreak", class_breakpoint, 1); | |
6462 | ||
6463 | if (xdb_commands) | |
6464 | { | |
6465 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
6466 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
6467 | add_com ("bx", class_breakpoint, break_at_finish_at_depth_command, | |
6468 | "Set breakpoint at procedure exit. Either there should\n\ | |
6469 | be no argument or the argument must be a depth.\n"); | |
6470 | } | |
6471 | ||
6472 | if (dbx_commands) | |
6473 | { | |
6474 | add_abbrev_prefix_cmd("stop", class_breakpoint, stop_command, | |
6475 | "Break in function/address or break at a line in the current file.", | |
6476 | &stoplist, "stop ", 1, &cmdlist); | |
6477 | add_cmd("in", class_breakpoint, stopin_command, | |
6478 | "Break in function or address.\n", &stoplist); | |
6479 | add_cmd("at", class_breakpoint, stopat_command, | |
6480 | "Break at a line in the current file.\n", &stoplist); | |
6481 | add_com("status", class_info, breakpoints_info, | |
6482 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
6483 | The \"Type\" column indicates one of:\n\ | |
6484 | \tbreakpoint - normal breakpoint\n\ | |
6485 | \twatchpoint - watchpoint\n\ | |
6486 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
6487 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
6488 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
6489 | address and file/line number respectively.\n\n", | |
6490 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
6491 | are set to the address of the last breakpoint listed.\n\n\ | |
6492 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
6493 | breakpoint set.", NULL)); | |
6494 | } | |
6495 | ||
bd5635a1 | 6496 | add_info ("breakpoints", breakpoints_info, |
706dc3ce | 6497 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 6498 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
6499 | \tbreakpoint - normal breakpoint\n\ |
6500 | \twatchpoint - watchpoint\n\ | |
80ba48f5 SG |
6501 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
6502 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
6503 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
6504 | address and file/line number respectively.\n\n", |
6505 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
80ba48f5 SG |
6506 | are set to the address of the last breakpoint listed.\n\n\ |
6507 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
65b07ddc DT |
6508 | breakpoint set.", NULL)); |
6509 | ||
6510 | if (xdb_commands) | |
6511 | add_com("lb", class_breakpoint, breakpoints_info, | |
6512 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
6513 | The \"Type\" column indicates one of:\n\ | |
6514 | \tbreakpoint - normal breakpoint\n\ | |
6515 | \twatchpoint - watchpoint\n\ | |
6516 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
6517 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
6518 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
6519 | address and file/line number respectively.\n\n", | |
6520 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
6521 | are set to the address of the last breakpoint listed.\n\n\ | |
6522 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 6523 | breakpoint set.", NULL)); |
80ba48f5 | 6524 | |
9b280a7f JG |
6525 | #if MAINTENANCE_CMDS |
6526 | ||
6527 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, | |
706dc3ce | 6528 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 6529 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
6530 | \tbreakpoint - normal breakpoint\n\ |
6531 | \twatchpoint - watchpoint\n\ | |
6532 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
6533 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
6534 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
706dc3ce JL |
6535 | \tfinish - internal breakpoint used by the \"finish\" command\n", |
6536 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
80ba48f5 SG |
6537 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
6538 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
6539 | address and file/line number respectively.\n\n", |
6540 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
bd5635a1 RP |
6541 | are set to the address of the last breakpoint listed.\n\n\ |
6542 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 6543 | breakpoint set.", NULL), |
9b280a7f JG |
6544 | &maintenanceinfolist); |
6545 | ||
6546 | #endif /* MAINTENANCE_CMDS */ | |
bd5635a1 RP |
6547 | |
6548 | add_com ("catch", class_breakpoint, catch_command, | |
65b07ddc DT |
6549 | "Set catchpoints to catch events.\n\ |
6550 | Raised signals may be caught:\n\ | |
6551 | \tcatch signal - all signals\n\ | |
6552 | \tcatch signal <signame> - a particular signal\n\ | |
6553 | Raised exceptions may be caught:\n\ | |
6554 | \tcatch throw - all exceptions, when thrown\n\ | |
6555 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
6556 | \tcatch catch - all exceptions, when caught\n\ | |
6557 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
6558 | Thread or process events may be caught:\n\ | |
6559 | \tcatch thread_start - any threads, just after creation\n\ | |
6560 | \tcatch thread_exit - any threads, just before expiration\n\ | |
6561 | \tcatch thread_join - any threads, just after joins\n\ | |
6562 | Process events may be caught:\n\ | |
6563 | \tcatch start - any processes, just after creation\n\ | |
6564 | \tcatch exit - any processes, just before expiration\n\ | |
6565 | \tcatch fork - calls to fork()\n\ | |
6566 | \tcatch vfork - calls to vfork()\n\ | |
6567 | \tcatch exec - calls to exec()\n\ | |
6568 | Dynamically-linked library events may be caught:\n\ | |
6569 | \tcatch load - loads of any library\n\ | |
6570 | \tcatch load <libname> - loads of a particular library\n\ | |
6571 | \tcatch unload - unloads of any library\n\ | |
6572 | \tcatch unload <libname> - unloads of a particular library\n\ | |
6573 | The act of your program's execution stopping may also be caught:\n\ | |
6574 | \tcatch stop\n\n\ | |
6575 | C++ exceptions may be caught:\n\ | |
6576 | \tcatch throw - all exceptions, when thrown\n\ | |
6577 | \tcatch catch - all exceptions, when caught\n\ | |
bd5635a1 | 6578 | \n\ |
65b07ddc DT |
6579 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ |
6580 | after a fork or vfork is caught.\n\n\ | |
bd5635a1 | 6581 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); |
65b07ddc DT |
6582 | |
6583 | add_com ("tcatch", class_breakpoint, tcatch_command, | |
6584 | "Set temporary catchpoints to catch events.\n\ | |
6585 | Args like \"catch\" command.\n\ | |
6586 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
6587 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
6588 | by using \"enable delete\" on the catchpoint number."); | |
6589 | ||
6590 | add_com ("watch", class_breakpoint, watch_command, | |
bd5635a1 | 6591 | |
bd5635a1 RP |
6592 | "Set a watchpoint for an expression.\n\ |
6593 | A watchpoint stops execution of your program whenever the value of\n\ | |
6594 | an expression changes."); | |
6595 | ||
11054881 KH |
6596 | add_com ("rwatch", class_breakpoint, rwatch_command, |
6597 | "Set a read watchpoint for an expression.\n\ | |
6598 | A watchpoint stops execution of your program whenever the value of\n\ | |
6599 | an expression is read."); | |
6600 | ||
6601 | add_com ("awatch", class_breakpoint, awatch_command, | |
6602 | "Set a watchpoint for an expression.\n\ | |
6603 | A watchpoint stops execution of your program whenever the value of\n\ | |
6604 | an expression is either read or written."); | |
6605 | ||
c8950965 JG |
6606 | add_info ("watchpoints", breakpoints_info, |
6607 | "Synonym for ``info breakpoints''."); | |
9f577285 | 6608 | |
65b07ddc DT |
6609 | |
6610 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
6611 | (char *) &can_use_hw_watchpoints, | |
6612 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
6613 | If zero, gdb will not use hardware for new watchpoints, even if\n\ | |
6614 | such is available. (However, any hardware watchpoints that were\n\ | |
6615 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
6616 | hardware.)", | |
6617 | &setlist); | |
6618 | add_show_from_set (c, &showlist); | |
6619 | ||
6620 | can_use_hw_watchpoints = 1; | |
bd5635a1 | 6621 | } |