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 | |
6e45c399 | 71 | static int breakpoint_re_set_one PARAMS ((PTR)); |
30875e1c | 72 | |
65b07ddc DT |
73 | static void |
74 | clear_command PARAMS ((char *, int)); | |
30875e1c | 75 | |
65b07ddc DT |
76 | static void |
77 | catch_command PARAMS ((char *, int)); | |
30875e1c | 78 | |
65b07ddc DT |
79 | static void |
80 | handle_gnu_4_16_catch_command PARAMS ((char *, int, int)); | |
30875e1c | 81 | |
65b07ddc DT |
82 | static struct symtabs_and_lines |
83 | get_catch_sals PARAMS ((int)); | |
30875e1c | 84 | |
65b07ddc DT |
85 | static void |
86 | watch_command PARAMS ((char *, int)); | |
999dd04b | 87 | |
65b07ddc DT |
88 | static int |
89 | can_use_hardware_watchpoint PARAMS ((struct value *)); | |
30875e1c | 90 | |
65b07ddc DT |
91 | void |
92 | tbreak_command PARAMS ((char *, int)); | |
30875e1c | 93 | |
65b07ddc DT |
94 | static void |
95 | break_command_1 PARAMS ((char *, int, int)); | |
30875e1c | 96 | |
65b07ddc DT |
97 | static void |
98 | mention PARAMS ((struct breakpoint *)); | |
30875e1c | 99 | |
65b07ddc DT |
100 | struct breakpoint * |
101 | set_raw_breakpoint PARAMS ((struct symtab_and_line)); | |
30875e1c | 102 | |
65b07ddc DT |
103 | static void |
104 | check_duplicates PARAMS ((CORE_ADDR, asection *)); | |
30875e1c | 105 | |
65b07ddc DT |
106 | static void |
107 | describe_other_breakpoints PARAMS ((CORE_ADDR, asection *)); | |
30875e1c | 108 | |
65b07ddc DT |
109 | static void |
110 | breakpoints_info PARAMS ((char *, int)); | |
30875e1c | 111 | |
65b07ddc DT |
112 | static void |
113 | breakpoint_1 PARAMS ((int, int)); | |
30875e1c | 114 | |
65b07ddc DT |
115 | static bpstat |
116 | bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); | |
30875e1c | 117 | |
6e45c399 | 118 | static int breakpoint_cond_eval PARAMS ((PTR)); |
30875e1c | 119 | |
65b07ddc DT |
120 | static void |
121 | cleanup_executing_breakpoints PARAMS ((PTR)); | |
30875e1c | 122 | |
65b07ddc DT |
123 | static void |
124 | commands_command PARAMS ((char *, int)); | |
30875e1c | 125 | |
65b07ddc DT |
126 | static void |
127 | condition_command PARAMS ((char *, int)); | |
30875e1c | 128 | |
65b07ddc DT |
129 | static int |
130 | get_number PARAMS ((char **)); | |
131 | ||
132 | void | |
133 | set_breakpoint_count PARAMS ((int)); | |
134 | ||
135 | #if 0 | |
136 | static struct breakpoint * | |
137 | create_temp_exception_breakpoint PARAMS ((CORE_ADDR)); | |
138 | #endif | |
139 | ||
140 | typedef enum { | |
141 | mark_inserted, | |
142 | mark_uninserted, | |
143 | } insertion_state_t; | |
144 | ||
145 | static int | |
146 | remove_breakpoint PARAMS ((struct breakpoint *, insertion_state_t)); | |
30875e1c | 147 | |
92fb1f2e | 148 | static int print_it_normal PARAMS ((bpstat)); |
b607efe7 | 149 | |
65b07ddc DT |
150 | typedef struct { |
151 | enum exception_event_kind kind; | |
152 | int enable; | |
153 | } args_for_catchpoint_enable; | |
154 | ||
6e45c399 | 155 | static int watchpoint_check PARAMS ((PTR)); |
b607efe7 | 156 | |
6e45c399 | 157 | static int cover_target_enable_exception_callback PARAMS ((PTR)); |
65b07ddc | 158 | |
92fb1f2e | 159 | static int print_it_done PARAMS ((bpstat)); |
b607efe7 | 160 | |
92fb1f2e | 161 | static int print_it_noop PARAMS ((bpstat)); |
b607efe7 | 162 | |
92fb1f2e | 163 | static void maintenance_info_breakpoints PARAMS ((char *, int)); |
b607efe7 FF |
164 | |
165 | #ifdef GET_LONGJMP_TARGET | |
92fb1f2e | 166 | static void create_longjmp_breakpoint PARAMS ((char *)); |
b607efe7 FF |
167 | #endif |
168 | ||
92fb1f2e | 169 | static int hw_breakpoint_used_count PARAMS ((void)); |
b607efe7 | 170 | |
92fb1f2e | 171 | static int hw_watchpoint_used_count PARAMS ((enum bptype, int *)); |
b607efe7 | 172 | |
92fb1f2e | 173 | static void hbreak_command PARAMS ((char *, int)); |
b607efe7 | 174 | |
92fb1f2e | 175 | static void thbreak_command PARAMS ((char *, int)); |
b607efe7 | 176 | |
92fb1f2e | 177 | static void watch_command_1 PARAMS ((char *, int, int)); |
b607efe7 | 178 | |
92fb1f2e | 179 | static void rwatch_command PARAMS ((char *, int)); |
b607efe7 | 180 | |
92fb1f2e | 181 | static void awatch_command PARAMS ((char *, int)); |
b607efe7 | 182 | |
92fb1f2e SS |
183 | static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); |
184 | ||
185 | /* Prototypes for exported functions. */ | |
186 | ||
65b07ddc DT |
187 | static void |
188 | awatch_command PARAMS ((char *, int)); | |
189 | ||
190 | static void | |
191 | do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); | |
192 | ||
193 | /* If FALSE, gdb will not use hardware support for watchpoints, even | |
194 | if such is available. */ | |
195 | static int can_use_hw_watchpoints; | |
196 | ||
92fb1f2e SS |
197 | void delete_command PARAMS ((char *, int)); |
198 | ||
199 | void _initialize_breakpoint PARAMS ((void)); | |
200 | ||
201 | void set_breakpoint_count PARAMS ((int)); | |
b607efe7 | 202 | |
bd5635a1 | 203 | extern int addressprint; /* Print machine addresses? */ |
bd5635a1 | 204 | |
6b038bd9 DT |
205 | #if defined (GET_LONGJMP_TARGET) || defined (SOLIB_ADD) |
206 | static int internal_breakpoint_number = -1; | |
207 | #endif | |
208 | ||
bd5635a1 RP |
209 | /* Are we executing breakpoint commands? */ |
210 | static int executing_breakpoint_commands; | |
211 | ||
cba0d141 JG |
212 | /* Walk the following statement or block through all breakpoints. |
213 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
214 | breakpoint. */ | |
215 | ||
bd5635a1 RP |
216 | #define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) |
217 | ||
cba0d141 JG |
218 | #define ALL_BREAKPOINTS_SAFE(b,tmp) \ |
219 | for (b = breakpoint_chain; \ | |
220 | b? (tmp=b->next, 1): 0; \ | |
221 | b = tmp) | |
222 | ||
6b038bd9 DT |
223 | /* True if SHIFT_INST_REGS defined, false otherwise. */ |
224 | ||
225 | int must_shift_inst_regs = | |
226 | #if defined(SHIFT_INST_REGS) | |
227 | 1 | |
228 | #else | |
229 | 0 | |
230 | #endif | |
231 | ; | |
232 | ||
9f577285 SS |
233 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
234 | ||
235 | int show_breakpoint_hit_counts = 1; | |
236 | ||
bd5635a1 RP |
237 | /* Chain of all breakpoints defined. */ |
238 | ||
e8bf33c4 | 239 | struct breakpoint *breakpoint_chain; |
bd5635a1 RP |
240 | |
241 | /* Number of last breakpoint made. */ | |
242 | ||
895cc8ab | 243 | int breakpoint_count; |
bd5635a1 | 244 | |
65b07ddc DT |
245 | /* Pointer to current exception event record */ |
246 | static struct exception_event_record * current_exception_event; | |
247 | ||
248 | /* Indicator of whether exception catchpoints should be nuked | |
249 | between runs of a program */ | |
250 | int exception_catchpoints_are_fragile = 0; | |
251 | ||
252 | /* Indicator of when exception catchpoints set-up should be | |
253 | reinitialized -- e.g. when program is re-run */ | |
254 | int exception_support_initialized = 0; | |
255 | ||
256 | ||
bd5635a1 | 257 | /* Set breakpoint count to NUM. */ |
9f577285 | 258 | |
895cc8ab | 259 | void |
bd5635a1 RP |
260 | set_breakpoint_count (num) |
261 | int num; | |
262 | { | |
263 | breakpoint_count = num; | |
264 | set_internalvar (lookup_internalvar ("bpnum"), | |
06b6c733 | 265 | value_from_longest (builtin_type_int, (LONGEST) num)); |
bd5635a1 RP |
266 | } |
267 | ||
9f577285 SS |
268 | /* Used in run_command to zero the hit count when a new run starts. */ |
269 | ||
270 | void | |
271 | clear_breakpoint_hit_counts () | |
272 | { | |
273 | struct breakpoint *b; | |
274 | ||
275 | ALL_BREAKPOINTS (b) | |
276 | b->hit_count = 0; | |
277 | } | |
278 | ||
bd5635a1 RP |
279 | /* Default address, symtab and line to put a breakpoint at |
280 | for "break" command with no arg. | |
281 | if default_breakpoint_valid is zero, the other three are | |
282 | not valid, and "break" with no arg is an error. | |
283 | ||
284 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
285 | ||
286 | int default_breakpoint_valid; | |
287 | CORE_ADDR default_breakpoint_address; | |
288 | struct symtab *default_breakpoint_symtab; | |
289 | int default_breakpoint_line; | |
bd5635a1 RP |
290 | \f |
291 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
292 | Advance *PP after the string and any trailing whitespace. | |
293 | ||
294 | Currently the string can either be a number or "$" followed by the name | |
295 | of a convenience variable. Making it an expression wouldn't work well | |
296 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
297 | static int | |
298 | get_number (pp) | |
299 | char **pp; | |
300 | { | |
301 | int retval; | |
302 | char *p = *pp; | |
303 | ||
304 | if (p == NULL) | |
305 | /* Empty line means refer to the last breakpoint. */ | |
306 | return breakpoint_count; | |
307 | else if (*p == '$') | |
308 | { | |
309 | /* Make a copy of the name, so we can null-terminate it | |
310 | to pass to lookup_internalvar(). */ | |
311 | char *varname; | |
312 | char *start = ++p; | |
82a2edfb | 313 | value_ptr val; |
bd5635a1 RP |
314 | |
315 | while (isalnum (*p) || *p == '_') | |
316 | p++; | |
317 | varname = (char *) alloca (p - start + 1); | |
318 | strncpy (varname, start, p - start); | |
319 | varname[p - start] = '\0'; | |
320 | val = value_of_internalvar (lookup_internalvar (varname)); | |
321 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
322 | error ( | |
323 | "Convenience variables used to specify breakpoints must have integer values." | |
324 | ); | |
325 | retval = (int) value_as_long (val); | |
326 | } | |
327 | else | |
328 | { | |
80ba48f5 SG |
329 | if (*p == '-') |
330 | ++p; | |
bd5635a1 RP |
331 | while (*p >= '0' && *p <= '9') |
332 | ++p; | |
333 | if (p == *pp) | |
334 | /* There is no number here. (e.g. "cond a == b"). */ | |
335 | error_no_arg ("breakpoint number"); | |
336 | retval = atoi (*pp); | |
337 | } | |
338 | if (!(isspace (*p) || *p == '\0')) | |
339 | error ("breakpoint number expected"); | |
340 | while (isspace (*p)) | |
341 | p++; | |
342 | *pp = p; | |
343 | return retval; | |
344 | } | |
345 | \f | |
346 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
347 | ||
348 | static void | |
349 | condition_command (arg, from_tty) | |
350 | char *arg; | |
351 | int from_tty; | |
352 | { | |
353 | register struct breakpoint *b; | |
354 | char *p; | |
355 | register int bnum; | |
356 | ||
357 | if (arg == 0) | |
358 | error_no_arg ("breakpoint number"); | |
359 | ||
360 | p = arg; | |
361 | bnum = get_number (&p); | |
362 | ||
363 | ALL_BREAKPOINTS (b) | |
364 | if (b->number == bnum) | |
365 | { | |
366 | if (b->cond) | |
367 | { | |
c8950965 | 368 | free ((PTR)b->cond); |
bd5635a1 RP |
369 | b->cond = 0; |
370 | } | |
371 | if (b->cond_string != NULL) | |
c8950965 | 372 | free ((PTR)b->cond_string); |
bd5635a1 RP |
373 | |
374 | if (*p == 0) | |
375 | { | |
376 | b->cond = 0; | |
377 | b->cond_string = NULL; | |
378 | if (from_tty) | |
423e9664 | 379 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); |
bd5635a1 RP |
380 | } |
381 | else | |
382 | { | |
383 | arg = p; | |
384 | /* I don't know if it matters whether this is the string the user | |
385 | typed in or the decompiled expression. */ | |
386 | b->cond_string = savestring (arg, strlen (arg)); | |
d3b9c0df | 387 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); |
bd5635a1 RP |
388 | if (*arg) |
389 | error ("Junk at end of expression"); | |
390 | } | |
16726dd1 | 391 | breakpoints_changed (); |
bd5635a1 RP |
392 | return; |
393 | } | |
394 | ||
395 | error ("No breakpoint number %d.", bnum); | |
396 | } | |
397 | ||
bdbd5f50 | 398 | /* ARGSUSED */ |
bd5635a1 RP |
399 | static void |
400 | commands_command (arg, from_tty) | |
401 | char *arg; | |
402 | int from_tty; | |
403 | { | |
404 | register struct breakpoint *b; | |
405 | char *p; | |
406 | register int bnum; | |
407 | struct command_line *l; | |
408 | ||
409 | /* If we allowed this, we would have problems with when to | |
410 | free the storage, if we change the commands currently | |
411 | being read from. */ | |
412 | ||
413 | if (executing_breakpoint_commands) | |
414 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
415 | ||
416 | p = arg; | |
417 | bnum = get_number (&p); | |
418 | if (p && *p) | |
419 | error ("Unexpected extra arguments following breakpoint number."); | |
420 | ||
421 | ALL_BREAKPOINTS (b) | |
422 | if (b->number == bnum) | |
423 | { | |
41756e56 FF |
424 | char tmpbuf[128]; |
425 | sprintf (tmpbuf, "Type commands for when breakpoint %d is hit, one per line.", bnum); | |
426 | l = read_command_lines (tmpbuf, from_tty); | |
bd5635a1 RP |
427 | free_command_lines (&b->commands); |
428 | b->commands = l; | |
6c803036 | 429 | breakpoints_changed (); |
bd5635a1 RP |
430 | return; |
431 | } | |
432 | error ("No breakpoint number %d.", bnum); | |
433 | } | |
434 | \f | |
31ef19fc | 435 | /* Like target_read_memory() but if breakpoints are inserted, return |
30875e1c SG |
436 | the shadow contents instead of the breakpoints themselves. |
437 | ||
438 | Read "memory data" from whatever target or inferior we have. | |
439 | Returns zero if successful, errno value if not. EIO is used | |
440 | for address out of bounds. If breakpoints are inserted, returns | |
441 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
442 | ||
31ef19fc JK |
443 | int |
444 | read_memory_nobpt (memaddr, myaddr, len) | |
445 | CORE_ADDR memaddr; | |
446 | char *myaddr; | |
447 | unsigned len; | |
448 | { | |
449 | int status; | |
450 | struct breakpoint *b; | |
65b07ddc DT |
451 | CORE_ADDR bp_addr = 0; |
452 | int bp_size = 0; | |
31ef19fc | 453 | |
65b07ddc DT |
454 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) |
455 | /* No breakpoints on this machine. */ | |
31ef19fc JK |
456 | return target_read_memory (memaddr, myaddr, len); |
457 | ||
458 | ALL_BREAKPOINTS (b) | |
459 | { | |
65b07ddc DT |
460 | if (b->type == bp_none) |
461 | warning ("attempted to read through apparently deleted breakpoint #%d?\n", b->number); | |
462 | ||
463 | /* memory breakpoint? */ | |
999dd04b JL |
464 | if (b->type == bp_watchpoint |
465 | || b->type == bp_hardware_watchpoint | |
11054881 | 466 | || b->type == bp_read_watchpoint |
65b07ddc | 467 | || b->type == bp_access_watchpoint) |
31ef19fc | 468 | continue; |
65b07ddc DT |
469 | /* bp in memory? */ |
470 | if (!b->inserted) | |
31ef19fc | 471 | continue; |
65b07ddc DT |
472 | /* Addresses and length of the part of the breakpoint that |
473 | we need to copy. */ | |
474 | /* XXXX The m68k, sh and h8300 have different local and remote | |
475 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
476 | correctly determine the breakpoints memory address and size | |
477 | for these targets. */ | |
478 | bp_addr = b->address; | |
479 | bp_size = 0; | |
480 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
481 | continue; | |
482 | if (bp_size == 0) | |
483 | /* bp isn't valid */ | |
484 | continue; | |
485 | if (bp_addr + bp_size <= memaddr) | |
486 | /* The breakpoint is entirely before the chunk of memory we | |
31ef19fc JK |
487 | are reading. */ |
488 | continue; | |
65b07ddc DT |
489 | if (bp_addr >= memaddr + len) |
490 | /* The breakpoint is entirely after the chunk of memory we are | |
491 | reading. */ | |
492 | continue; | |
493 | /* Copy the breakpoint from the shadow contents, and recurse for | |
494 | the things before and after. */ | |
495 | { | |
496 | /* Offset within shadow_contents. */ | |
497 | int bptoffset = 0; | |
31ef19fc | 498 | |
65b07ddc DT |
499 | if (bp_addr < memaddr) |
500 | { | |
501 | /* Only copy the second part of the breakpoint. */ | |
502 | bp_size -= memaddr - bp_addr; | |
503 | bptoffset = memaddr - bp_addr; | |
504 | bp_addr = memaddr; | |
505 | } | |
506 | ||
507 | if (bp_addr + bp_size > memaddr + len) | |
508 | { | |
509 | /* Only copy the first part of the breakpoint. */ | |
510 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
511 | } | |
512 | ||
513 | memcpy (myaddr + bp_addr - memaddr, | |
514 | b->shadow_contents + bptoffset, bp_size); | |
515 | ||
516 | if (bp_addr > memaddr) | |
517 | { | |
518 | /* Copy the section of memory before the breakpoint. */ | |
519 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
520 | if (status != 0) | |
521 | return status; | |
522 | } | |
523 | ||
524 | if (bp_addr + bp_size < memaddr + len) | |
525 | { | |
526 | /* Copy the section of memory after the breakpoint. */ | |
527 | status = read_memory_nobpt | |
528 | (bp_addr + bp_size, | |
529 | myaddr + bp_addr + bp_size - memaddr, | |
530 | memaddr + len - (bp_addr + bp_size)); | |
531 | if (status != 0) | |
532 | return status; | |
533 | } | |
534 | return 0; | |
535 | } | |
31ef19fc JK |
536 | } |
537 | /* Nothing overlaps. Just call read_memory_noerr. */ | |
538 | return target_read_memory (memaddr, myaddr, len); | |
539 | } | |
65b07ddc | 540 | |
31ef19fc | 541 | \f |
bd5635a1 RP |
542 | /* insert_breakpoints is used when starting or continuing the program. |
543 | remove_breakpoints is used when the program stops. | |
544 | Both return zero if successful, | |
545 | or an `errno' value if could not write the inferior. */ | |
546 | ||
547 | int | |
548 | insert_breakpoints () | |
549 | { | |
fa3764e2 | 550 | register struct breakpoint *b, *temp; |
bd5635a1 RP |
551 | int val = 0; |
552 | int disabled_breaks = 0; | |
553 | ||
65b07ddc DT |
554 | static char message1[] = "Error inserting catchpoint %d:\n"; |
555 | static char message[sizeof (message1) + 30]; | |
556 | ||
557 | ||
fa3764e2 | 558 | ALL_BREAKPOINTS_SAFE (b, temp) |
65b07ddc DT |
559 | { |
560 | if (b->type != bp_watchpoint | |
561 | && b->type != bp_hardware_watchpoint | |
562 | && b->type != bp_read_watchpoint | |
563 | && b->type != bp_access_watchpoint | |
564 | && b->type != bp_catch_fork | |
565 | && b->type != bp_catch_vfork | |
566 | && b->type != bp_catch_exec | |
567 | && b->type != bp_catch_throw | |
568 | && b->type != bp_catch_catch | |
569 | && b->enable != disabled | |
570 | && b->enable != shlib_disabled | |
571 | && b->enable != call_disabled | |
572 | && ! b->inserted | |
573 | && ! b->duplicate) | |
574 | { | |
575 | if (b->type == bp_hardware_breakpoint) | |
576 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
577 | else | |
578 | { | |
579 | /* Check to see if breakpoint is in an overlay section; | |
580 | if so, we should set the breakpoint at the LMA address. | |
581 | Only if the section is currently mapped should we ALSO | |
582 | set a break at the VMA address. */ | |
583 | if (overlay_debugging && b->section && | |
584 | section_is_overlay (b->section)) | |
585 | { | |
586 | CORE_ADDR addr; | |
587 | ||
588 | addr = overlay_unmapped_address (b->address, b->section); | |
589 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
590 | /* This would be the time to check val, to see if the | |
591 | breakpoint write to the load address succeeded. | |
592 | However, this might be an ordinary occurrance, eg. if | |
593 | the unmapped overlay is in ROM. */ | |
594 | val = 0; /* in case unmapped address failed */ | |
595 | if (section_is_mapped (b->section)) | |
596 | val = target_insert_breakpoint (b->address, | |
597 | b->shadow_contents); | |
598 | } | |
599 | else /* ordinary (non-overlay) address */ | |
600 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
601 | } | |
602 | if (val) | |
603 | { | |
604 | /* Can't set the breakpoint. */ | |
bd5635a1 | 605 | #if defined (DISABLE_UNSETTABLE_BREAK) |
65b07ddc DT |
606 | if (DISABLE_UNSETTABLE_BREAK (b->address)) |
607 | { | |
608 | /* See also: disable_breakpoints_in_shlibs. */ | |
609 | val = 0; | |
610 | b->enable = shlib_disabled; | |
611 | if (!disabled_breaks) | |
612 | { | |
613 | target_terminal_ours_for_output (); | |
614 | fprintf_unfiltered (gdb_stderr, | |
615 | "Cannot insert breakpoint %d:\n", b->number); | |
616 | printf_filtered ("Temporarily disabling shared library breakpoints:\n"); | |
617 | } | |
618 | disabled_breaks = 1; | |
619 | printf_filtered ("%d ", b->number); | |
620 | } | |
621 | else | |
bd5635a1 | 622 | #endif |
65b07ddc DT |
623 | { |
624 | target_terminal_ours_for_output (); | |
625 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); | |
d3b9c0df | 626 | #ifdef ONE_PROCESS_WRITETEXT |
65b07ddc DT |
627 | fprintf_unfiltered (gdb_stderr, |
628 | "The same program may be running in another process.\n"); | |
d3b9c0df | 629 | #endif |
65b07ddc DT |
630 | memory_error (val, b->address); /* which bombs us out */ |
631 | } | |
632 | } | |
633 | else | |
634 | b->inserted = 1; | |
635 | } | |
636 | else if (ep_is_exception_catchpoint (b) | |
637 | && b->enable != disabled | |
638 | && b->enable != shlib_disabled | |
639 | && b->enable != call_disabled | |
640 | && ! b->inserted | |
641 | && ! b->duplicate) | |
642 | ||
999dd04b | 643 | { |
65b07ddc DT |
644 | /* If we get here, we must have a callback mechanism for exception |
645 | events -- with g++ style embedded label support, we insert | |
646 | ordinary breakpoints and not catchpoints. */ | |
65b07ddc DT |
647 | sprintf (message, message1, b->number); /* Format possible error message */ |
648 | ||
649 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
650 | if (val) | |
651 | { | |
652 | /* Couldn't set breakpoint for some reason */ | |
653 | target_terminal_ours_for_output (); | |
654 | fprintf_unfiltered (gdb_stderr, | |
655 | "Cannot insert catchpoint %d; disabling it\n", b->number); | |
656 | b->enable = disabled; | |
657 | } | |
658 | else | |
659 | { | |
660 | /* Bp set, now make sure callbacks are enabled */ | |
6e45c399 AC |
661 | int val; |
662 | args_for_catchpoint_enable args; | |
663 | args.kind = b->type == bp_catch_catch ? EX_EVENT_CATCH : EX_EVENT_THROW; | |
664 | args.enable = 1; | |
665 | val = catch_errors (cover_target_enable_exception_callback, | |
666 | &args, | |
667 | message, RETURN_MASK_ALL); | |
668 | if (val != 0 && val != -1) | |
669 | { | |
670 | b->inserted = 1; | |
671 | } | |
672 | /* Check if something went wrong; val == 0 can be ignored */ | |
673 | if (val == -1) | |
674 | { | |
675 | /* something went wrong */ | |
676 | target_terminal_ours_for_output (); | |
677 | fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d; disabling it\n", b->number); | |
678 | b->enable = disabled; | |
679 | } | |
65b07ddc DT |
680 | } |
681 | } | |
682 | ||
683 | else if ((b->type == bp_hardware_watchpoint || | |
684 | b->type == bp_read_watchpoint || | |
685 | b->type == bp_access_watchpoint) | |
686 | && b->enable == enabled | |
687 | && ! b->inserted | |
688 | && ! b->duplicate) | |
689 | { | |
690 | struct frame_info *saved_frame; | |
691 | int saved_level, within_current_scope; | |
692 | value_ptr mark = value_mark (); | |
693 | value_ptr v; | |
694 | ||
695 | /* Save the current frame and level so we can restore it after | |
696 | evaluating the watchpoint expression on its own frame. */ | |
697 | saved_frame = selected_frame; | |
698 | saved_level = selected_frame_level; | |
699 | ||
700 | /* Determine if the watchpoint is within scope. */ | |
701 | if (b->exp_valid_block == NULL) | |
702 | within_current_scope = 1; | |
703 | else | |
704 | { | |
705 | struct frame_info *fi; | |
706 | ||
707 | /* There might be no current frame at this moment if we are | |
708 | resuming from a step over a breakpoint. | |
709 | Set up current frame before trying to find the watchpoint | |
710 | frame. */ | |
711 | get_current_frame (); | |
712 | fi = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
713 | within_current_scope = (fi != NULL); | |
714 | if (within_current_scope) | |
715 | select_frame (fi, -1); | |
716 | } | |
999dd04b | 717 | |
65b07ddc DT |
718 | if (within_current_scope) |
719 | { | |
720 | /* Evaluate the expression and cut the chain of values | |
721 | produced off from the value chain. */ | |
722 | v = evaluate_expression (b->exp); | |
723 | value_release_to_mark (mark); | |
999dd04b | 724 | |
65b07ddc DT |
725 | b->val_chain = v; |
726 | b->inserted = 1; | |
999dd04b | 727 | |
65b07ddc DT |
728 | /* Look at each value on the value chain. */ |
729 | for ( ; v; v=v->next) | |
730 | { | |
731 | /* If it's a memory location, then we must watch it. */ | |
732 | if (v->lval == lval_memory) | |
733 | { | |
734 | int addr, len, type; | |
999dd04b | 735 | |
65b07ddc DT |
736 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); |
737 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
738 | type = 0; | |
739 | if (b->type == bp_read_watchpoint) | |
740 | type = 1; | |
741 | else if (b->type == bp_access_watchpoint) | |
742 | type = 2; | |
743 | ||
744 | val = target_insert_watchpoint (addr, len, type); | |
745 | if (val == -1) | |
746 | { | |
747 | b->inserted = 0; | |
748 | break; | |
749 | } | |
750 | val = 0; | |
751 | } | |
752 | } | |
753 | /* Failure to insert a watchpoint on any memory value in the | |
754 | value chain brings us here. */ | |
755 | if (!b->inserted) | |
756 | warning ("Hardware watchpoint %d: Could not insert watchpoint\n", | |
757 | b->number); | |
758 | } | |
759 | else | |
760 | { | |
761 | printf_filtered ("\ | |
999dd04b JL |
762 | Hardware watchpoint %d deleted because the program has left the block in\n\ |
763 | which its expression is valid.\n", b->number); | |
65b07ddc DT |
764 | if (b->related_breakpoint) |
765 | b->related_breakpoint->disposition = del_at_next_stop; | |
766 | b->disposition = del_at_next_stop; | |
767 | } | |
999dd04b | 768 | |
65b07ddc DT |
769 | /* Restore the frame and level. */ |
770 | if ((saved_frame != selected_frame) || | |
771 | (saved_level != selected_frame_level)) | |
772 | select_and_print_frame (saved_frame, saved_level); | |
773 | } | |
774 | else if ((b->type == bp_catch_fork | |
775 | || b->type == bp_catch_vfork | |
776 | || b->type == bp_catch_exec) | |
777 | && b->enable == enabled | |
778 | && ! b->inserted | |
779 | && ! b->duplicate) | |
780 | { | |
781 | val = -1; | |
782 | switch (b->type) | |
783 | { | |
784 | case bp_catch_fork : | |
785 | val = target_insert_fork_catchpoint (inferior_pid); | |
786 | break; | |
787 | case bp_catch_vfork : | |
788 | val = target_insert_vfork_catchpoint (inferior_pid); | |
789 | break; | |
790 | case bp_catch_exec : | |
791 | val = target_insert_exec_catchpoint (inferior_pid); | |
792 | break; | |
793 | } | |
794 | if (val < 0) | |
795 | { | |
796 | target_terminal_ours_for_output (); | |
797 | fprintf_unfiltered (gdb_stderr, "Cannot insert catchpoint %d:\n", b->number); | |
798 | } | |
799 | else | |
800 | b->inserted = 1; | |
801 | } | |
802 | } | |
bd5635a1 RP |
803 | if (disabled_breaks) |
804 | printf_filtered ("\n"); | |
65b07ddc | 805 | |
bd5635a1 RP |
806 | return val; |
807 | } | |
808 | ||
999dd04b | 809 | |
bd5635a1 RP |
810 | int |
811 | remove_breakpoints () | |
812 | { | |
813 | register struct breakpoint *b; | |
814 | int val; | |
815 | ||
bd5635a1 | 816 | ALL_BREAKPOINTS (b) |
999dd04b JL |
817 | { |
818 | if (b->inserted) | |
819 | { | |
65b07ddc | 820 | val = remove_breakpoint (b, mark_uninserted); |
999dd04b JL |
821 | if (val != 0) |
822 | return val; | |
823 | } | |
824 | } | |
825 | return 0; | |
826 | } | |
bd5635a1 | 827 | |
65b07ddc DT |
828 | int |
829 | reattach_breakpoints (pid) | |
830 | int pid; | |
831 | { | |
832 | register struct breakpoint *b; | |
833 | int val; | |
834 | int saved_inferior_pid = inferior_pid; | |
835 | ||
836 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
837 | ALL_BREAKPOINTS (b) | |
838 | { | |
839 | if (b->inserted) | |
840 | { | |
841 | remove_breakpoint (b, mark_inserted); | |
842 | if (b->type == bp_hardware_breakpoint) | |
843 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
844 | else | |
845 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
846 | if (val != 0) | |
847 | { | |
848 | inferior_pid = saved_inferior_pid; | |
849 | return val; | |
850 | } | |
851 | } | |
852 | } | |
853 | inferior_pid = saved_inferior_pid; | |
854 | return 0; | |
855 | } | |
856 | ||
857 | void | |
858 | update_breakpoints_after_exec () | |
859 | { | |
860 | struct breakpoint * b; | |
861 | struct breakpoint * temp; | |
862 | ||
863 | /* Doing this first prevents the badness of having delete_breakpoint() | |
864 | write a breakpoint's current "shadow contents" to lift the bp. That | |
865 | shadow is NOT valid after an exec()! */ | |
866 | mark_breakpoints_out (); | |
867 | ||
868 | ALL_BREAKPOINTS_SAFE (b, temp) | |
869 | { | |
870 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
871 | if (b->type == bp_shlib_event) | |
872 | { | |
873 | delete_breakpoint (b); | |
874 | continue; | |
875 | } | |
876 | ||
877 | /* Step-resume breakpoints are meaningless after an exec(). */ | |
878 | if (b->type == bp_step_resume) | |
879 | { | |
880 | delete_breakpoint (b); | |
881 | continue; | |
882 | } | |
883 | ||
884 | /* Ditto the sigtramp handler breakpoints. */ | |
885 | if (b->type == bp_through_sigtramp) | |
886 | { | |
887 | delete_breakpoint (b); | |
888 | continue; | |
889 | } | |
890 | ||
891 | /* Ditto the exception-handling catchpoints. */ | |
892 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
893 | { | |
894 | delete_breakpoint (b); | |
895 | continue; | |
896 | } | |
897 | ||
898 | /* Don't delete an exec catchpoint, because else the inferior | |
899 | won't stop when it ought! | |
900 | ||
901 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
902 | on this target, we may not be able to stop when the vfork is seen, | |
903 | but only when the subsequent exec is seen. (And because deleting | |
904 | fork catchpoints here but not vfork catchpoints will seem mysterious | |
905 | to users, keep those too.) | |
906 | ||
907 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
908 | target address field, if any, is sufficient to have it be reset | |
909 | automagically. Certainly on HP-UX that's true. */ | |
910 | if ((b->type == bp_catch_exec) || | |
911 | (b->type == bp_catch_vfork) || | |
912 | (b->type == bp_catch_fork)) | |
913 | { | |
677f415c | 914 | b->address = (CORE_ADDR) NULL; |
65b07ddc DT |
915 | continue; |
916 | } | |
917 | ||
918 | /* bp_finish is a special case. The only way we ought to be able | |
919 | to see one of these when an exec() has happened, is if the user | |
920 | caught a vfork, and then said "finish". Ordinarily a finish just | |
921 | carries them to the call-site of the current callee, by setting | |
922 | a temporary bp there and resuming. But in this case, the finish | |
923 | will carry them entirely through the vfork & exec. | |
924 | ||
925 | We don't want to allow a bp_finish to remain inserted now. But | |
926 | we can't safely delete it, 'cause finish_command has a handle to | |
927 | the bp on a bpstat, and will later want to delete it. There's a | |
928 | chance (and I've seen it happen) that if we delete the bp_finish | |
929 | here, that its storage will get reused by the time finish_command | |
930 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
931 | We really must allow finish_command to delete a bp_finish. | |
932 | ||
933 | In the absense of a general solution for the "how do we know it's | |
934 | safe to delete something others may have handles to?" problem, what | |
935 | we'll do here is just uninsert the bp_finish, and let finish_command | |
936 | delete it. | |
937 | ||
938 | (We know the bp_finish is "doomed" in the sense that it's momentary, | |
939 | and will be deleted as soon as finish_command sees the inferior stopped. | |
940 | So it doesn't matter that the bp's address is probably bogus in the | |
941 | new a.out, unlike e.g., the solib breakpoints.) */ | |
942 | if (b->type == bp_finish) | |
943 | { | |
944 | continue; | |
945 | } | |
946 | ||
947 | /* Without a symbolic address, we have little hope of the | |
948 | pre-exec() address meaning the same thing in the post-exec() | |
949 | a.out. */ | |
950 | if (b->addr_string == NULL) | |
951 | { | |
952 | delete_breakpoint (b); | |
953 | continue; | |
954 | } | |
955 | ||
956 | /* If this breakpoint has survived the above battery of checks, then | |
957 | it must have a symbolic address. Be sure that it gets reevaluated | |
958 | to a target address, rather than reusing the old evaluation. */ | |
677f415c | 959 | b->address = (CORE_ADDR) NULL; |
65b07ddc DT |
960 | } |
961 | } | |
962 | ||
963 | int | |
964 | detach_breakpoints (pid) | |
965 | int pid; | |
966 | { | |
967 | register struct breakpoint *b; | |
968 | int val; | |
969 | int saved_inferior_pid = inferior_pid; | |
970 | ||
971 | if (pid == inferior_pid) | |
972 | error ("Cannot detach breakpoints of inferior_pid"); | |
973 | ||
974 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
975 | ALL_BREAKPOINTS (b) | |
976 | { | |
977 | if (b->inserted) | |
978 | { | |
979 | val = remove_breakpoint (b, mark_inserted); | |
980 | if (val != 0) | |
981 | { | |
982 | inferior_pid = saved_inferior_pid; | |
983 | return val; | |
984 | } | |
985 | } | |
986 | } | |
987 | inferior_pid = saved_inferior_pid; | |
988 | return 0; | |
989 | } | |
999dd04b JL |
990 | |
991 | static int | |
65b07ddc | 992 | remove_breakpoint (b, is) |
999dd04b | 993 | struct breakpoint *b; |
65b07ddc | 994 | insertion_state_t is; |
999dd04b JL |
995 | { |
996 | int val; | |
997 | ||
65b07ddc DT |
998 | if (b->type == bp_none) |
999 | warning ("attempted to remove apparently deleted breakpoint #%d?\n", b->number); | |
1000 | ||
999dd04b | 1001 | if (b->type != bp_watchpoint |
11054881 KH |
1002 | && b->type != bp_hardware_watchpoint |
1003 | && b->type != bp_read_watchpoint | |
65b07ddc DT |
1004 | && b->type != bp_access_watchpoint |
1005 | && b->type != bp_catch_fork | |
1006 | && b->type != bp_catch_vfork | |
1007 | && b->type != bp_catch_exec | |
1008 | && b->type != bp_catch_catch | |
1009 | && b->type != bp_catch_throw) | |
1010 | ||
999dd04b | 1011 | { |
11054881 KH |
1012 | if (b->type == bp_hardware_breakpoint) |
1013 | val = target_remove_hw_breakpoint(b->address, b->shadow_contents); | |
1014 | else | |
6b038bd9 DT |
1015 | { |
1016 | /* Check to see if breakpoint is in an overlay section; | |
1017 | if so, we should remove the breakpoint at the LMA address. | |
1018 | If that is not equal to the raw address, then we should | |
1019 | presumable remove the breakpoint there as well. */ | |
1020 | if (overlay_debugging && b->section && | |
1021 | section_is_overlay (b->section)) | |
1022 | { | |
1023 | CORE_ADDR addr; | |
1024 | ||
1025 | addr = overlay_unmapped_address (b->address, b->section); | |
1026 | val = target_remove_breakpoint (addr, b->shadow_contents); | |
1027 | /* This would be the time to check val, to see if the | |
1028 | shadow breakpoint write to the load address succeeded. | |
1029 | However, this might be an ordinary occurrance, eg. if | |
1030 | the unmapped overlay is in ROM. */ | |
1031 | val = 0; /* in case unmapped address failed */ | |
1032 | if (section_is_mapped (b->section)) | |
1033 | val = target_remove_breakpoint (b->address, | |
1034 | b->shadow_contents); | |
1035 | } | |
1036 | else /* ordinary (non-overlay) address */ | |
1037 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
1038 | } | |
999dd04b JL |
1039 | if (val) |
1040 | return val; | |
65b07ddc | 1041 | b->inserted = (is == mark_inserted); |
999dd04b | 1042 | } |
11054881 KH |
1043 | else if ((b->type == bp_hardware_watchpoint || |
1044 | b->type == bp_read_watchpoint || | |
1045 | b->type == bp_access_watchpoint) | |
999dd04b JL |
1046 | && b->enable == enabled |
1047 | && ! b->duplicate) | |
1048 | { | |
1049 | value_ptr v, n; | |
1050 | ||
65b07ddc | 1051 | b->inserted = (is == mark_inserted); |
999dd04b JL |
1052 | /* Walk down the saved value chain. */ |
1053 | for (v = b->val_chain; v; v = v->next) | |
1054 | { | |
1055 | /* For each memory reference remove the watchpoint | |
1056 | at that address. */ | |
1057 | if (v->lval == lval_memory) | |
1058 | { | |
6b038bd9 | 1059 | int addr, len, type; |
999dd04b JL |
1060 | |
1061 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1062 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
6b038bd9 DT |
1063 | type = 0; |
1064 | if (b->type == bp_read_watchpoint) | |
1065 | type = 1; | |
1066 | else if (b->type == bp_access_watchpoint) | |
1067 | type = 2; | |
1068 | ||
1069 | val = target_remove_watchpoint (addr, len, type); | |
999dd04b JL |
1070 | if (val == -1) |
1071 | b->inserted = 1; | |
1072 | val = 0; | |
1073 | } | |
1074 | } | |
1075 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
65b07ddc | 1076 | if ((is == mark_uninserted) && (b->inserted)) |
0fe1522a SG |
1077 | warning ("Hardware watchpoint %d: Could not remove watchpoint\n", |
1078 | b->number); | |
999dd04b JL |
1079 | |
1080 | /* Free the saved value chain. We will construct a new one | |
1081 | the next time the watchpoint is inserted. */ | |
1082 | for (v = b->val_chain; v; v = n) | |
1083 | { | |
1084 | n = v->next; | |
1085 | value_free (v); | |
1086 | } | |
1087 | b->val_chain = NULL; | |
1088 | } | |
65b07ddc DT |
1089 | else if ((b->type == bp_catch_fork || |
1090 | b->type == bp_catch_vfork || | |
1091 | b->type == bp_catch_exec) | |
1092 | && b->enable == enabled | |
1093 | && ! b->duplicate) | |
1094 | { | |
1095 | val = -1; | |
1096 | switch (b->type) | |
1097 | { | |
1098 | case bp_catch_fork: | |
1099 | val = target_remove_fork_catchpoint (inferior_pid); | |
1100 | break; | |
1101 | case bp_catch_vfork : | |
1102 | val = target_remove_vfork_catchpoint (inferior_pid); | |
1103 | break; | |
1104 | case bp_catch_exec : | |
1105 | val = target_remove_exec_catchpoint (inferior_pid); | |
1106 | break; | |
1107 | } | |
1108 | if (val) | |
1109 | return val; | |
1110 | b->inserted = (is == mark_inserted); | |
1111 | } | |
1112 | else if ((b->type == bp_catch_catch || | |
1113 | b->type == bp_catch_throw) | |
1114 | && b->enable == enabled | |
1115 | && ! b->duplicate) | |
1116 | { | |
1117 | ||
1118 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
1119 | if (val) | |
1120 | return val; | |
1121 | b->inserted = (is == mark_inserted); | |
1122 | } | |
1123 | else if (ep_is_exception_catchpoint (b) | |
1124 | && b->inserted /* sometimes previous insert doesn't happen */ | |
1125 | && b->enable == enabled | |
1126 | && ! b->duplicate) | |
1127 | { | |
1128 | ||
1129 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
1130 | if (val) | |
1131 | return val; | |
1132 | ||
1133 | b->inserted = (is == mark_inserted); | |
1134 | } | |
1135 | ||
bd5635a1 RP |
1136 | return 0; |
1137 | } | |
1138 | ||
cf3e377e | 1139 | /* Clear the "inserted" flag in all breakpoints. */ |
bd5635a1 RP |
1140 | |
1141 | void | |
1142 | mark_breakpoints_out () | |
1143 | { | |
1144 | register struct breakpoint *b; | |
1145 | ||
1146 | ALL_BREAKPOINTS (b) | |
1147 | b->inserted = 0; | |
1148 | } | |
1149 | ||
cf3e377e | 1150 | /* Clear the "inserted" flag in all breakpoints and delete any breakpoints |
65b07ddc DT |
1151 | which should go away between runs of the program. |
1152 | ||
1153 | Plus other such housekeeping that has to be done for breakpoints | |
1154 | between runs. | |
1155 | ||
1156 | Note: this function gets called at the end of a run (by generic_mourn_inferior) | |
1157 | and when a run begins (by init_wait_for_inferior). */ | |
1158 | ||
1159 | ||
cf3e377e JK |
1160 | |
1161 | void | |
65b07ddc DT |
1162 | breakpoint_init_inferior (context) |
1163 | enum inf_context context; | |
cf3e377e JK |
1164 | { |
1165 | register struct breakpoint *b, *temp; | |
65b07ddc | 1166 | static int warning_needed = 0; |
cf3e377e JK |
1167 | |
1168 | ALL_BREAKPOINTS_SAFE (b, temp) | |
1169 | { | |
1170 | b->inserted = 0; | |
1171 | ||
e51481f9 JL |
1172 | switch (b->type) |
1173 | { | |
1174 | case bp_call_dummy: | |
1175 | case bp_watchpoint_scope: | |
999dd04b | 1176 | |
e51481f9 JL |
1177 | /* If the call dummy breakpoint is at the entry point it will |
1178 | cause problems when the inferior is rerun, so we better | |
1179 | get rid of it. | |
999dd04b | 1180 | |
e51481f9 JL |
1181 | Also get rid of scope breakpoints. */ |
1182 | delete_breakpoint (b); | |
1183 | break; | |
1184 | ||
1185 | case bp_watchpoint: | |
1186 | case bp_hardware_watchpoint: | |
1187 | case bp_read_watchpoint: | |
1188 | case bp_access_watchpoint: | |
1189 | ||
1190 | /* Likewise for watchpoints on local expressions. */ | |
1191 | if (b->exp_valid_block != NULL) | |
1192 | delete_breakpoint (b); | |
1193 | break; | |
e51481f9 | 1194 | default: |
65b07ddc DT |
1195 | /* Likewise for exception catchpoints in dynamic-linked |
1196 | executables where required */ | |
1197 | if (ep_is_exception_catchpoint (b) && | |
1198 | exception_catchpoints_are_fragile) | |
1199 | { | |
1200 | warning_needed = 1; | |
1201 | delete_breakpoint (b); | |
1202 | } | |
1203 | break; | |
e51481f9 | 1204 | } |
cf3e377e | 1205 | } |
65b07ddc DT |
1206 | |
1207 | if (exception_catchpoints_are_fragile) | |
1208 | exception_support_initialized = 0; | |
1209 | ||
1210 | /* Don't issue the warning unless it's really needed... */ | |
1211 | if (warning_needed && (context != inf_exited)) | |
1212 | { | |
1213 | warning ("Exception catchpoints from last run were deleted, you must reinsert them explicitly"); | |
1214 | warning_needed = 0; | |
1215 | } | |
cf3e377e JK |
1216 | } |
1217 | ||
bd5635a1 RP |
1218 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. |
1219 | When continuing from a location with a breakpoint, | |
1220 | we actually single step once before calling insert_breakpoints. */ | |
1221 | ||
1222 | int | |
1223 | breakpoint_here_p (pc) | |
1224 | CORE_ADDR pc; | |
1225 | { | |
1226 | register struct breakpoint *b; | |
1227 | ||
1228 | ALL_BREAKPOINTS (b) | |
6b038bd9 | 1229 | if (b->enable == enabled |
65b07ddc DT |
1230 | && b->enable != shlib_disabled |
1231 | && b->enable != call_disabled | |
6b038bd9 | 1232 | && b->address == pc) /* bp is enabled and matches pc */ |
ad3b8c4a JM |
1233 | { |
1234 | if (overlay_debugging && | |
1235 | section_is_overlay (b->section) && | |
1236 | !section_is_mapped (b->section)) | |
1237 | continue; /* unmapped overlay -- can't be a match */ | |
1238 | else | |
1239 | return 1; | |
1240 | } | |
6b038bd9 DT |
1241 | |
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), but it | |
1246 | only returns true if there is actually a breakpoint inserted at PC. */ | |
1247 | ||
1248 | int | |
1249 | breakpoint_inserted_here_p (pc) | |
1250 | CORE_ADDR pc; | |
1251 | { | |
1252 | register struct breakpoint *b; | |
1253 | ||
1254 | ALL_BREAKPOINTS (b) | |
1255 | if (b->inserted | |
1256 | && b->address == pc) /* bp is inserted and matches pc */ | |
ad3b8c4a JM |
1257 | { |
1258 | if (overlay_debugging && | |
1259 | section_is_overlay (b->section) && | |
1260 | !section_is_mapped (b->section)) | |
1261 | continue; /* unmapped overlay -- can't be a match */ | |
1262 | else | |
1263 | return 1; | |
1264 | } | |
bd5635a1 RP |
1265 | |
1266 | return 0; | |
1267 | } | |
199b2450 | 1268 | |
05052b63 JK |
1269 | /* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY |
1270 | because figuring out the saved SP would take too much time, at least using | |
1271 | get_saved_register on the 68k. This means that for this function to | |
1272 | work right a port must use the bp_call_dummy breakpoint. */ | |
1273 | ||
1274 | int | |
1275 | frame_in_dummy (frame) | |
706dc3ce | 1276 | struct frame_info *frame; |
05052b63 | 1277 | { |
6b038bd9 DT |
1278 | #ifdef CALL_DUMMY |
1279 | #ifdef USE_GENERIC_DUMMY_FRAMES | |
1280 | return generic_pc_in_call_dummy (frame->pc, frame->frame); | |
1281 | #else | |
05052b63 JK |
1282 | struct breakpoint *b; |
1283 | ||
1284 | ALL_BREAKPOINTS (b) | |
1285 | { | |
6b038bd9 | 1286 | static ULONGEST dummy[] = CALL_DUMMY; |
d7e7e851 | 1287 | |
05052b63 | 1288 | if (b->type == bp_call_dummy |
d7e7e851 JK |
1289 | && b->frame == frame->frame |
1290 | ||
1291 | /* We need to check the PC as well as the frame on the sparc, | |
1292 | for signals.exp in the testsuite. */ | |
1293 | && (frame->pc | |
1294 | >= (b->address | |
1295 | - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE)) | |
1296 | && frame->pc <= b->address) | |
05052b63 JK |
1297 | return 1; |
1298 | } | |
6b038bd9 | 1299 | #endif /* GENERIC_DUMMY_FRAMES */ |
d7e7e851 | 1300 | #endif /* CALL_DUMMY */ |
05052b63 JK |
1301 | return 0; |
1302 | } | |
1303 | ||
199b2450 TL |
1304 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC |
1305 | is valid for process/thread PID. */ | |
1306 | ||
1307 | int | |
1308 | breakpoint_thread_match (pc, pid) | |
1309 | CORE_ADDR pc; | |
1310 | int pid; | |
1311 | { | |
1312 | struct breakpoint *b; | |
1313 | int thread; | |
1314 | ||
1315 | thread = pid_to_thread_id (pid); | |
1316 | ||
1317 | ALL_BREAKPOINTS (b) | |
1318 | if (b->enable != disabled | |
fa3764e2 | 1319 | && b->enable != shlib_disabled |
65b07ddc | 1320 | && b->enable != call_disabled |
199b2450 TL |
1321 | && b->address == pc |
1322 | && (b->thread == -1 || b->thread == thread)) | |
ad3b8c4a JM |
1323 | { |
1324 | if (overlay_debugging && | |
1325 | section_is_overlay (b->section) && | |
1326 | !section_is_mapped (b->section)) | |
1327 | continue; /* unmapped overlay -- can't be a match */ | |
1328 | else | |
1329 | return 1; | |
1330 | } | |
199b2450 TL |
1331 | |
1332 | return 0; | |
1333 | } | |
1334 | ||
bd5635a1 RP |
1335 | \f |
1336 | /* bpstat stuff. External routines' interfaces are documented | |
1337 | in breakpoint.h. */ | |
30875e1c | 1338 | |
65b07ddc DT |
1339 | int |
1340 | ep_is_catchpoint (ep) | |
1341 | struct breakpoint * ep; | |
1342 | { | |
1343 | return | |
1344 | (ep->type == bp_catch_load) | |
1345 | || (ep->type == bp_catch_unload) | |
1346 | || (ep->type == bp_catch_fork) | |
1347 | || (ep->type == bp_catch_vfork) | |
1348 | || (ep->type == bp_catch_exec) | |
1349 | || (ep->type == bp_catch_catch) | |
1350 | || (ep->type == bp_catch_throw) | |
1351 | ||
1352 | ||
1353 | /* ??rehrauer: Add more kinds here, as are implemented... */ | |
1354 | ; | |
1355 | } | |
1356 | ||
1357 | int | |
1358 | ep_is_shlib_catchpoint (ep) | |
1359 | struct breakpoint * ep; | |
1360 | { | |
1361 | return | |
1362 | (ep->type == bp_catch_load) | |
1363 | || (ep->type == bp_catch_unload) | |
1364 | ; | |
1365 | } | |
1366 | ||
1367 | int | |
1368 | ep_is_exception_catchpoint (ep) | |
1369 | struct breakpoint * ep; | |
1370 | { | |
1371 | return | |
1372 | (ep->type == bp_catch_catch) | |
1373 | || (ep->type == bp_catch_throw) | |
1374 | ; | |
1375 | } | |
1376 | ||
30875e1c SG |
1377 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1378 | Also free any storage that is part of a bpstat. */ | |
1379 | ||
bd5635a1 RP |
1380 | void |
1381 | bpstat_clear (bsp) | |
1382 | bpstat *bsp; | |
1383 | { | |
1384 | bpstat p; | |
1385 | bpstat q; | |
1386 | ||
1387 | if (bsp == 0) | |
1388 | return; | |
1389 | p = *bsp; | |
1390 | while (p != NULL) | |
1391 | { | |
1392 | q = p->next; | |
1393 | if (p->old_val != NULL) | |
1394 | value_free (p->old_val); | |
c8950965 | 1395 | free ((PTR)p); |
bd5635a1 RP |
1396 | p = q; |
1397 | } | |
1398 | *bsp = NULL; | |
1399 | } | |
1400 | ||
30875e1c SG |
1401 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
1402 | is part of the bpstat is copied as well. */ | |
1403 | ||
bd5635a1 RP |
1404 | bpstat |
1405 | bpstat_copy (bs) | |
1406 | bpstat bs; | |
1407 | { | |
1408 | bpstat p = NULL; | |
1409 | bpstat tmp; | |
fee933f1 | 1410 | bpstat retval = NULL; |
bd5635a1 RP |
1411 | |
1412 | if (bs == NULL) | |
1413 | return bs; | |
1414 | ||
1415 | for (; bs != NULL; bs = bs->next) | |
1416 | { | |
1417 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4ed3a9ea | 1418 | memcpy (tmp, bs, sizeof (*tmp)); |
bd5635a1 RP |
1419 | if (p == NULL) |
1420 | /* This is the first thing in the chain. */ | |
1421 | retval = tmp; | |
1422 | else | |
1423 | p->next = tmp; | |
1424 | p = tmp; | |
1425 | } | |
1426 | p->next = NULL; | |
1427 | return retval; | |
1428 | } | |
1429 | ||
30875e1c SG |
1430 | /* Find the bpstat associated with this breakpoint */ |
1431 | ||
1432 | bpstat | |
1433 | bpstat_find_breakpoint(bsp, breakpoint) | |
1434 | bpstat bsp; | |
1435 | struct breakpoint *breakpoint; | |
1436 | { | |
1437 | if (bsp == NULL) return NULL; | |
1438 | ||
1439 | for (;bsp != NULL; bsp = bsp->next) { | |
1440 | if (bsp->breakpoint_at == breakpoint) return bsp; | |
1441 | } | |
1442 | return NULL; | |
1443 | } | |
1444 | ||
65b07ddc DT |
1445 | /* Find a step_resume breakpoint associated with this bpstat. |
1446 | (If there are multiple step_resume bp's on the list, this function | |
1447 | will arbitrarily pick one.) | |
1448 | ||
1449 | It is an error to use this function if BPSTAT doesn't contain a | |
1450 | step_resume breakpoint. | |
1451 | ||
1452 | See wait_for_inferior's use of this function. */ | |
1453 | struct breakpoint * | |
1454 | bpstat_find_step_resume_breakpoint (bsp) | |
1455 | bpstat bsp; | |
1456 | { | |
1457 | if (bsp == NULL) | |
1458 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1459 | ||
1460 | for (; bsp != NULL; bsp = bsp->next) | |
1461 | { | |
1462 | if ((bsp->breakpoint_at != NULL) && | |
1463 | (bsp->breakpoint_at->type == bp_step_resume)) | |
1464 | return bsp->breakpoint_at; | |
1465 | } | |
1466 | ||
1467 | error ("Internal error (no step_resume breakpoint found)"); | |
1468 | } | |
1469 | ||
1470 | ||
30875e1c SG |
1471 | /* Return the breakpoint number of the first breakpoint we are stopped |
1472 | at. *BSP upon return is a bpstat which points to the remaining | |
1473 | breakpoints stopped at (but which is not guaranteed to be good for | |
1474 | anything but further calls to bpstat_num). | |
1475 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1476 | ||
bd5635a1 RP |
1477 | int |
1478 | bpstat_num (bsp) | |
1479 | bpstat *bsp; | |
1480 | { | |
1481 | struct breakpoint *b; | |
1482 | ||
1483 | if ((*bsp) == NULL) | |
1484 | return 0; /* No more breakpoint values */ | |
1485 | else | |
1486 | { | |
1487 | b = (*bsp)->breakpoint_at; | |
1488 | *bsp = (*bsp)->next; | |
1489 | if (b == NULL) | |
1490 | return -1; /* breakpoint that's been deleted since */ | |
1491 | else | |
1492 | return b->number; /* We have its number */ | |
1493 | } | |
1494 | } | |
1495 | ||
30875e1c SG |
1496 | /* Modify BS so that the actions will not be performed. */ |
1497 | ||
bd5635a1 RP |
1498 | void |
1499 | bpstat_clear_actions (bs) | |
1500 | bpstat bs; | |
1501 | { | |
1502 | for (; bs != NULL; bs = bs->next) | |
1503 | { | |
1504 | bs->commands = NULL; | |
1505 | if (bs->old_val != NULL) | |
1506 | { | |
1507 | value_free (bs->old_val); | |
1508 | bs->old_val = NULL; | |
1509 | } | |
1510 | } | |
1511 | } | |
1512 | ||
bdbd5f50 JG |
1513 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
1514 | /* ARGSUSED */ | |
1515 | static void | |
1516 | cleanup_executing_breakpoints (ignore) | |
b607efe7 | 1517 | PTR ignore; |
bdbd5f50 JG |
1518 | { |
1519 | executing_breakpoint_commands = 0; | |
1520 | } | |
1521 | ||
bd5635a1 RP |
1522 | /* Execute all the commands associated with all the breakpoints at this |
1523 | location. Any of these commands could cause the process to proceed | |
1524 | beyond this point, etc. We look out for such changes by checking | |
1525 | the global "breakpoint_proceeded" after each command. */ | |
30875e1c | 1526 | |
bd5635a1 RP |
1527 | void |
1528 | bpstat_do_actions (bsp) | |
1529 | bpstat *bsp; | |
1530 | { | |
1531 | bpstat bs; | |
bdbd5f50 | 1532 | struct cleanup *old_chain; |
e8bf33c4 | 1533 | struct command_line *cmd; |
bdbd5f50 | 1534 | |
647e52ea SG |
1535 | /* Avoid endless recursion if a `source' command is contained |
1536 | in bs->commands. */ | |
1537 | if (executing_breakpoint_commands) | |
1538 | return; | |
1539 | ||
bdbd5f50 JG |
1540 | executing_breakpoint_commands = 1; |
1541 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
bd5635a1 RP |
1542 | |
1543 | top: | |
65b07ddc DT |
1544 | /* Note that (as of this writing), our callers all appear to |
1545 | be passing us the address of global stop_bpstat. And, if | |
1546 | our calls to execute_control_command cause the inferior to | |
1547 | proceed, that global (and hence, *bsp) will change. | |
1548 | ||
1549 | We must be careful to not touch *bsp unless the inferior | |
1550 | has not proceeded. */ | |
1551 | ||
1552 | /* This pointer will iterate over the list of bpstat's. */ | |
bd5635a1 RP |
1553 | bs = *bsp; |
1554 | ||
bd5635a1 RP |
1555 | breakpoint_proceeded = 0; |
1556 | for (; bs != NULL; bs = bs->next) | |
1557 | { | |
e8bf33c4 JK |
1558 | cmd = bs->commands; |
1559 | while (cmd != NULL) | |
bd5635a1 | 1560 | { |
0f8cdd9b | 1561 | execute_control_command (cmd); |
65b07ddc DT |
1562 | |
1563 | if (breakpoint_proceeded) | |
1564 | break; | |
1565 | else | |
1566 | cmd = cmd->next; | |
bd5635a1 | 1567 | } |
e8bf33c4 JK |
1568 | if (breakpoint_proceeded) |
1569 | /* The inferior is proceeded by the command; bomb out now. | |
1570 | The bpstat chain has been blown away by wait_for_inferior. | |
1571 | But since execution has stopped again, there is a new bpstat | |
1572 | to look at, so start over. */ | |
1573 | goto top; | |
1574 | else | |
1575 | bs->commands = NULL; | |
bd5635a1 | 1576 | } |
bd5635a1 RP |
1577 | |
1578 | executing_breakpoint_commands = 0; | |
bdbd5f50 | 1579 | discard_cleanups (old_chain); |
bd5635a1 RP |
1580 | } |
1581 | ||
8af68e4e JK |
1582 | /* This is the normal print_it function for a bpstat. In the future, |
1583 | much of this logic could (should?) be moved to bpstat_stop_status, | |
65b07ddc DT |
1584 | by having it set different print_it functions. |
1585 | ||
1586 | Current scheme: When we stop, bpstat_print() is called. | |
1587 | It loops through the bpstat list of things causing this stop, | |
1588 | calling the print_it function for each one. The default | |
1589 | print_it function, used for breakpoints, is print_it_normal(). | |
1590 | (Also see print_it_noop() and print_it_done()). | |
1591 | ||
1592 | Return values from this routine (used by bpstat_print() to | |
1593 | decide what to do): | |
1594 | 1: Means we printed something, and we do *not* desire that | |
1595 | something to be followed by a location. | |
1596 | 0: Means we printed something, and we *do* desire that | |
1597 | something to be followed by a location. | |
1598 | -1: Means we printed nothing. */ | |
30875e1c | 1599 | |
8af68e4e JK |
1600 | static int |
1601 | print_it_normal (bs) | |
bd5635a1 RP |
1602 | bpstat bs; |
1603 | { | |
1604 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
1605 | which has since been deleted. */ | |
8af68e4e | 1606 | if (bs->breakpoint_at == NULL |
30875e1c | 1607 | || (bs->breakpoint_at->type != bp_breakpoint |
65b07ddc DT |
1608 | && bs->breakpoint_at->type != bp_catch_load |
1609 | && bs->breakpoint_at->type != bp_catch_unload | |
1610 | && bs->breakpoint_at->type != bp_catch_fork | |
1611 | && bs->breakpoint_at->type != bp_catch_vfork | |
1612 | && bs->breakpoint_at->type != bp_catch_exec | |
1613 | && bs->breakpoint_at->type != bp_catch_catch | |
1614 | && bs->breakpoint_at->type != bp_catch_throw | |
11054881 | 1615 | && bs->breakpoint_at->type != bp_hardware_breakpoint |
999dd04b | 1616 | && bs->breakpoint_at->type != bp_watchpoint |
11054881 KH |
1617 | && bs->breakpoint_at->type != bp_read_watchpoint |
1618 | && bs->breakpoint_at->type != bp_access_watchpoint | |
999dd04b | 1619 | && bs->breakpoint_at->type != bp_hardware_watchpoint)) |
65b07ddc | 1620 | return -1; |
bd5635a1 | 1621 | |
65b07ddc DT |
1622 | if (ep_is_shlib_catchpoint (bs->breakpoint_at)) |
1623 | { | |
1624 | annotate_catchpoint (bs->breakpoint_at->number); | |
1625 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1626 | if (bs->breakpoint_at->type == bp_catch_load) | |
1627 | printf_filtered ("loaded"); | |
1628 | else if (bs->breakpoint_at->type == bp_catch_unload) | |
1629 | printf_filtered ("unloaded"); | |
1630 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1631 | return 0; | |
1632 | } | |
1633 | else if (bs->breakpoint_at->type == bp_catch_fork || | |
1634 | bs->breakpoint_at->type == bp_catch_vfork) | |
1635 | { | |
1636 | annotate_catchpoint (bs->breakpoint_at->number); | |
1637 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1638 | if (bs->breakpoint_at->type == bp_catch_fork) | |
1639 | printf_filtered ("forked"); | |
1640 | else if (bs->breakpoint_at->type == bp_catch_vfork) | |
1641 | printf_filtered ("vforked"); | |
1642 | printf_filtered (" process %d), ", bs->breakpoint_at->forked_inferior_pid); | |
1643 | return 0; | |
1644 | } | |
1645 | else if (bs->breakpoint_at->type == bp_catch_exec) | |
1646 | { | |
1647 | annotate_catchpoint (bs->breakpoint_at->number); | |
1648 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
1649 | bs->breakpoint_at->number, | |
1650 | bs->breakpoint_at->exec_pathname); | |
1651 | return 0; | |
1652 | } | |
1653 | else if (bs->breakpoint_at->type == bp_catch_catch) | |
1654 | { | |
1655 | if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
1656 | { | |
1657 | annotate_catchpoint (bs->breakpoint_at->number); | |
1658 | printf_filtered ("\nCatchpoint %d (exception caught), ", bs->breakpoint_at->number); | |
1659 | printf_filtered ("throw location "); | |
1660 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1661 | printf_filtered ("%s:%d", | |
1662 | CURRENT_EXCEPTION_THROW_FILE, | |
1663 | CURRENT_EXCEPTION_THROW_LINE); | |
1664 | else | |
1665 | printf_filtered ("unknown"); | |
1666 | ||
1667 | printf_filtered (", catch location "); | |
1668 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1669 | printf_filtered ("%s:%d", | |
1670 | CURRENT_EXCEPTION_CATCH_FILE, | |
1671 | CURRENT_EXCEPTION_CATCH_LINE); | |
1672 | else | |
1673 | printf_filtered ("unknown"); | |
1674 | ||
1675 | printf_filtered ("\n"); | |
1676 | return 1; /* don't bother to print location frame info */ | |
1677 | } | |
1678 | else | |
1679 | { | |
1680 | return -1; /* really throw, some other bpstat will handle it */ | |
1681 | } | |
1682 | } | |
1683 | else if (bs->breakpoint_at->type == bp_catch_throw) | |
1684 | { | |
1685 | if (current_exception_event && (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
1686 | { | |
1687 | annotate_catchpoint (bs->breakpoint_at->number); | |
1688 | printf_filtered ("\nCatchpoint %d (exception thrown), ", bs->breakpoint_at->number); | |
1689 | printf_filtered ("throw location "); | |
1690 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1691 | printf_filtered ("%s:%d", | |
1692 | CURRENT_EXCEPTION_THROW_FILE, | |
1693 | CURRENT_EXCEPTION_THROW_LINE); | |
1694 | else | |
1695 | printf_filtered ("unknown"); | |
1696 | ||
1697 | printf_filtered (", catch location "); | |
1698 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1699 | printf_filtered ("%s:%d", | |
1700 | CURRENT_EXCEPTION_CATCH_FILE, | |
1701 | CURRENT_EXCEPTION_CATCH_LINE); | |
1702 | else | |
1703 | printf_filtered ("unknown"); | |
1704 | ||
1705 | printf_filtered ("\n"); | |
1706 | return 1; /* don't bother to print location frame info */ | |
1707 | } | |
1708 | else | |
1709 | { | |
1710 | return -1; /* really catch, some other bpstat willhandle it */ | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | else if (bs->breakpoint_at->type == bp_breakpoint || | |
11054881 | 1715 | bs->breakpoint_at->type == bp_hardware_breakpoint) |
bd5635a1 RP |
1716 | { |
1717 | /* I think the user probably only wants to see one breakpoint | |
1718 | number, not all of them. */ | |
f2d9c058 | 1719 | annotate_breakpoint (bs->breakpoint_at->number); |
bd5635a1 RP |
1720 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); |
1721 | return 0; | |
1722 | } | |
11054881 KH |
1723 | else if ((bs->old_val != NULL) && |
1724 | (bs->breakpoint_at->type == bp_watchpoint || | |
1725 | bs->breakpoint_at->type == bp_access_watchpoint || | |
1726 | bs->breakpoint_at->type == bp_hardware_watchpoint)) | |
bd5635a1 | 1727 | { |
f2d9c058 | 1728 | annotate_watchpoint (bs->breakpoint_at->number); |
11054881 | 1729 | mention (bs->breakpoint_at); |
bd5635a1 | 1730 | printf_filtered ("\nOld value = "); |
199b2450 | 1731 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); |
bd5635a1 | 1732 | printf_filtered ("\nNew value = "); |
199b2450 | 1733 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
bd5635a1 RP |
1734 | Val_pretty_default); |
1735 | printf_filtered ("\n"); | |
1736 | value_free (bs->old_val); | |
1737 | bs->old_val = NULL; | |
bd2f0c85 JL |
1738 | /* More than one watchpoint may have been triggered. */ |
1739 | return -1; | |
bd5635a1 | 1740 | } |
11054881 KH |
1741 | else if (bs->breakpoint_at->type == bp_access_watchpoint || |
1742 | bs->breakpoint_at->type == bp_read_watchpoint) | |
1743 | { | |
1744 | mention (bs->breakpoint_at); | |
1745 | printf_filtered ("\nValue = "); | |
1746 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
1747 | Val_pretty_default); | |
1748 | printf_filtered ("\n"); | |
1749 | return -1; | |
1750 | } | |
8af68e4e JK |
1751 | /* We can't deal with it. Maybe another member of the bpstat chain can. */ |
1752 | return -1; | |
1753 | } | |
1754 | ||
65b07ddc DT |
1755 | /* Print a message indicating what happened. |
1756 | This is called from normal_stop(). | |
1757 | The input to this routine is the head of the bpstat list - a list | |
1758 | of the eventpoints that caused this stop. | |
1759 | This routine calls the "print_it" routine(s) associated | |
1760 | with these eventpoints. This will print (for example) | |
1761 | the "Breakpoint n," part of the output. | |
1762 | The return value of this routine is one of: | |
1763 | ||
1764 | -1: Means we printed nothing | |
1765 | 0: Means we printed something, and expect subsequent | |
1766 | code to print the location. An example is | |
1767 | "Breakpoint 1, " which should be followed by | |
1768 | the location. | |
1769 | 1 : Means we printed something, but there is no need | |
1770 | to also print the location part of the message. | |
1771 | An example is the catch/throw messages, which | |
1772 | don't require a location appended to the end. */ | |
1773 | ||
8af68e4e JK |
1774 | int |
1775 | bpstat_print (bs) | |
1776 | bpstat bs; | |
1777 | { | |
1778 | int val; | |
1779 | ||
1780 | if (bs == NULL) | |
65b07ddc | 1781 | return -1; |
bd5635a1 | 1782 | |
8af68e4e JK |
1783 | val = (*bs->print_it) (bs); |
1784 | if (val >= 0) | |
1785 | return val; | |
1786 | ||
fcb887ff JK |
1787 | /* Maybe another breakpoint in the chain caused us to stop. |
1788 | (Currently all watchpoints go on the bpstat whether hit or | |
1789 | not. That probably could (should) be changed, provided care is taken | |
1790 | with respect to bpstat_explains_signal). */ | |
1791 | if (bs->next) | |
1792 | return bpstat_print (bs->next); | |
1793 | ||
cabd4da6 | 1794 | /* We reached the end of the chain without printing anything. */ |
65b07ddc | 1795 | return -1; |
bd5635a1 RP |
1796 | } |
1797 | ||
1798 | /* Evaluate the expression EXP and return 1 if value is zero. | |
1799 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
bdbd5f50 | 1800 | The argument is a "struct expression *" that has been cast to char * to |
bd5635a1 RP |
1801 | make it pass through catch_errors. */ |
1802 | ||
1803 | static int | |
1804 | breakpoint_cond_eval (exp) | |
6e45c399 | 1805 | PTR exp; |
bd5635a1 | 1806 | { |
11054881 KH |
1807 | value_ptr mark = value_mark (); |
1808 | int i = !value_true (evaluate_expression ((struct expression *)exp)); | |
1809 | value_free_to_mark (mark); | |
1810 | return i; | |
bd5635a1 RP |
1811 | } |
1812 | ||
1813 | /* Allocate a new bpstat and chain it to the current one. */ | |
1814 | ||
1815 | static bpstat | |
1816 | bpstat_alloc (b, cbs) | |
1817 | register struct breakpoint *b; | |
1818 | bpstat cbs; /* Current "bs" value */ | |
1819 | { | |
1820 | bpstat bs; | |
1821 | ||
1822 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
1823 | cbs->next = bs; | |
1824 | bs->breakpoint_at = b; | |
1825 | /* If the condition is false, etc., don't do the commands. */ | |
1826 | bs->commands = NULL; | |
bd5635a1 | 1827 | bs->old_val = NULL; |
8af68e4e | 1828 | bs->print_it = print_it_normal; |
bd5635a1 RP |
1829 | return bs; |
1830 | } | |
fa99ebe1 | 1831 | \f |
8af68e4e JK |
1832 | /* Possible return values for watchpoint_check (this can't be an enum |
1833 | because of check_errors). */ | |
999dd04b JL |
1834 | /* The watchpoint has been deleted. */ |
1835 | #define WP_DELETED 1 | |
8af68e4e JK |
1836 | /* The value has changed. */ |
1837 | #define WP_VALUE_CHANGED 2 | |
1838 | /* The value has not changed. */ | |
1839 | #define WP_VALUE_NOT_CHANGED 3 | |
1840 | ||
e8bf33c4 JK |
1841 | #define BP_TEMPFLAG 1 |
1842 | #define BP_HARDWAREFLAG 2 | |
1843 | ||
8af68e4e | 1844 | /* Check watchpoint condition. */ |
557f3a0e | 1845 | |
8af68e4e JK |
1846 | static int |
1847 | watchpoint_check (p) | |
6e45c399 | 1848 | PTR p; |
8af68e4e JK |
1849 | { |
1850 | bpstat bs = (bpstat) p; | |
11054881 | 1851 | struct breakpoint *b; |
2b576293 C |
1852 | struct frame_info *fr; |
1853 | int within_current_scope; | |
999dd04b | 1854 | |
557f3a0e SS |
1855 | b = bs->breakpoint_at; |
1856 | ||
1857 | if (b->exp_valid_block == NULL) | |
8af68e4e | 1858 | within_current_scope = 1; |
fa99ebe1 JK |
1859 | else |
1860 | { | |
706dc3ce JL |
1861 | /* There is no current frame at this moment. If we're going to have |
1862 | any chance of handling watchpoints on local variables, we'll need | |
1863 | the frame chain (so we can determine if we're in scope). */ | |
1864 | reinit_frame_cache(); | |
557f3a0e | 1865 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
999dd04b | 1866 | within_current_scope = (fr != NULL); |
fa99ebe1 JK |
1867 | if (within_current_scope) |
1868 | /* If we end up stopping, the current frame will get selected | |
1869 | in normal_stop. So this call to select_frame won't affect | |
1870 | the user. */ | |
1871 | select_frame (fr, -1); | |
1872 | } | |
1873 | ||
8af68e4e JK |
1874 | if (within_current_scope) |
1875 | { | |
1876 | /* We use value_{,free_to_}mark because it could be a | |
1877 | *long* time before we return to the command level and | |
cef4c2e7 PS |
1878 | call free_all_values. We can't call free_all_values because |
1879 | we might be in the middle of evaluating a function call. */ | |
8af68e4e | 1880 | |
82a2edfb JK |
1881 | value_ptr mark = value_mark (); |
1882 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
557f3a0e | 1883 | if (!value_equal (b->val, new_val)) |
8af68e4e JK |
1884 | { |
1885 | release_value (new_val); | |
1886 | value_free_to_mark (mark); | |
557f3a0e SS |
1887 | bs->old_val = b->val; |
1888 | b->val = new_val; | |
8af68e4e JK |
1889 | /* We will stop here */ |
1890 | return WP_VALUE_CHANGED; | |
1891 | } | |
1892 | else | |
1893 | { | |
1894 | /* Nothing changed, don't do anything. */ | |
1895 | value_free_to_mark (mark); | |
1896 | /* We won't stop here */ | |
1897 | return WP_VALUE_NOT_CHANGED; | |
1898 | } | |
1899 | } | |
1900 | else | |
1901 | { | |
1902 | /* This seems like the only logical thing to do because | |
1903 | if we temporarily ignored the watchpoint, then when | |
1904 | we reenter the block in which it is valid it contains | |
1905 | garbage (in the case of a function, it may have two | |
1906 | garbage values, one before and one after the prologue). | |
1907 | So we can't even detect the first assignment to it and | |
1908 | watch after that (since the garbage may or may not equal | |
1909 | the first value assigned). */ | |
8af68e4e | 1910 | printf_filtered ("\ |
999dd04b | 1911 | Watchpoint %d deleted because the program has left the block in\n\ |
8af68e4e | 1912 | which its expression is valid.\n", bs->breakpoint_at->number); |
557f3a0e | 1913 | if (b->related_breakpoint) |
6b038bd9 | 1914 | b->related_breakpoint->disposition = del_at_next_stop; |
e51481f9 | 1915 | b->disposition = del_at_next_stop; |
999dd04b | 1916 | |
999dd04b | 1917 | return WP_DELETED; |
8af68e4e JK |
1918 | } |
1919 | } | |
1920 | ||
1921 | /* This is used when everything which needs to be printed has | |
1922 | already been printed. But we still want to print the frame. */ | |
65b07ddc DT |
1923 | |
1924 | /* Background: When we stop, bpstat_print() is called. | |
1925 | It loops through the bpstat list of things causing this stop, | |
1926 | calling the print_it function for each one. The default | |
1927 | print_it function, used for breakpoints, is print_it_normal(). | |
1928 | Also see print_it_noop() and print_it_done() are the other | |
1929 | two possibilities. See comments in bpstat_print() and | |
1930 | in header of print_it_normal() for more detail. */ | |
1931 | ||
8af68e4e | 1932 | static int |
cabd4da6 | 1933 | print_it_done (bs) |
8af68e4e JK |
1934 | bpstat bs; |
1935 | { | |
1936 | return 0; | |
1937 | } | |
1938 | ||
cabd4da6 | 1939 | /* This is used when nothing should be printed for this bpstat entry. */ |
65b07ddc DT |
1940 | /* Background: When we stop, bpstat_print() is called. |
1941 | It loops through the bpstat list of things causing this stop, | |
1942 | calling the print_it function for each one. The default | |
1943 | print_it function, used for breakpoints, is print_it_normal(). | |
1944 | Also see print_it_noop() and print_it_done() are the other | |
1945 | two possibilities. See comments in bpstat_print() and | |
1946 | in header of print_it_normal() for more detail. */ | |
cabd4da6 JK |
1947 | |
1948 | static int | |
1949 | print_it_noop (bs) | |
1950 | bpstat bs; | |
1951 | { | |
1952 | return -1; | |
1953 | } | |
1954 | ||
cb6b0202 | 1955 | /* Get a bpstat associated with having just stopped at address *PC |
706dc3ce | 1956 | and frame address CORE_ADDRESS. Update *PC to point at the |
cb6b0202 JK |
1957 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero |
1958 | if this is known to not be a real breakpoint (it could still be a | |
1959 | watchpoint, though). */ | |
1960 | ||
bd5635a1 RP |
1961 | /* Determine whether we stopped at a breakpoint, etc, or whether we |
1962 | don't understand this stop. Result is a chain of bpstat's such that: | |
1963 | ||
1964 | if we don't understand the stop, the result is a null pointer. | |
1965 | ||
cb6b0202 | 1966 | if we understand why we stopped, the result is not null. |
bd5635a1 RP |
1967 | |
1968 | Each element of the chain refers to a particular breakpoint or | |
1969 | watchpoint at which we have stopped. (We may have stopped for | |
2d313932 | 1970 | several reasons concurrently.) |
bd5635a1 RP |
1971 | |
1972 | Each element of the chain has valid next, breakpoint_at, | |
65b07ddc | 1973 | commands, FIXME??? fields. */ |
bd5635a1 | 1974 | |
bd5635a1 | 1975 | bpstat |
16726dd1 | 1976 | bpstat_stop_status (pc, not_a_breakpoint) |
bd5635a1 | 1977 | CORE_ADDR *pc; |
cb6b0202 | 1978 | int not_a_breakpoint; |
bd5635a1 | 1979 | { |
fa3764e2 | 1980 | register struct breakpoint *b, *temp; |
bd5635a1 RP |
1981 | CORE_ADDR bp_addr; |
1982 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
1983 | int real_breakpoint = 0; | |
1984 | /* Root of the chain of bpstat's */ | |
e8bf33c4 | 1985 | struct bpstats root_bs[1]; |
bd5635a1 RP |
1986 | /* Pointer to the last thing in the chain currently. */ |
1987 | bpstat bs = root_bs; | |
11054881 KH |
1988 | static char message1[] = |
1989 | "Error evaluating expression for watchpoint %d\n"; | |
1990 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 RP |
1991 | |
1992 | /* Get the address where the breakpoint would have been. */ | |
1993 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
1994 | ||
fa3764e2 | 1995 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 1996 | { |
fa3764e2 | 1997 | if (b->enable == disabled |
65b07ddc DT |
1998 | || b->enable == shlib_disabled |
1999 | || b->enable == call_disabled) | |
bd5635a1 | 2000 | continue; |
30875e1c | 2001 | |
999dd04b JL |
2002 | if (b->type != bp_watchpoint |
2003 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
2004 | && b->type != bp_read_watchpoint |
2005 | && b->type != bp_access_watchpoint | |
65b07ddc DT |
2006 | && b->type != bp_hardware_breakpoint |
2007 | && b->type != bp_catch_fork | |
2008 | && b->type != bp_catch_vfork | |
2009 | && b->type != bp_catch_exec | |
2010 | && b->type != bp_catch_catch | |
2011 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
6b038bd9 DT |
2012 | if (b->address != bp_addr || /* address doesn't match or */ |
2013 | (overlay_debugging && /* overlay doesn't match */ | |
2014 | section_is_overlay (b->section) && | |
2015 | !section_is_mapped (b->section))) | |
2016 | continue; | |
bd5635a1 | 2017 | |
11054881 KH |
2018 | if (b->type == bp_hardware_breakpoint |
2019 | && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK)) | |
2020 | continue; | |
2021 | ||
999dd04b JL |
2022 | if (b->type != bp_watchpoint |
2023 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
2024 | && b->type != bp_read_watchpoint |
2025 | && b->type != bp_access_watchpoint | |
999dd04b | 2026 | && not_a_breakpoint) |
cb6b0202 JK |
2027 | continue; |
2028 | ||
65b07ddc DT |
2029 | /* Is this a catchpoint of a load or unload? If so, did we |
2030 | get a load or unload of the specified library? If not, | |
2031 | ignore it. */ | |
2032 | if ((b->type == bp_catch_load) | |
2033 | #if defined(SOLIB_HAVE_LOAD_EVENT) | |
2034 | && (!SOLIB_HAVE_LOAD_EVENT(inferior_pid) | |
2035 | || ((b->dll_pathname != NULL) | |
2036 | && (strcmp (b->dll_pathname, SOLIB_LOADED_LIBRARY_PATHNAME(inferior_pid)) != 0))) | |
2037 | #endif | |
2038 | ) | |
2039 | continue; | |
2040 | ||
2041 | if ((b->type == bp_catch_unload) | |
2042 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) | |
2043 | && (!SOLIB_HAVE_UNLOAD_EVENT(inferior_pid) | |
2044 | || ((b->dll_pathname != NULL) | |
2045 | && (strcmp (b->dll_pathname, SOLIB_UNLOADED_LIBRARY_PATHNAME(inferior_pid)) != 0))) | |
2046 | #endif | |
2047 | ) | |
2048 | continue; | |
2049 | ||
2050 | if ((b->type == bp_catch_fork) | |
2051 | && ! target_has_forked (inferior_pid, &b->forked_inferior_pid)) | |
2052 | continue; | |
2053 | ||
2054 | if ((b->type == bp_catch_vfork) | |
2055 | && ! target_has_vforked (inferior_pid, &b->forked_inferior_pid)) | |
2056 | continue; | |
2057 | ||
2058 | if ((b->type == bp_catch_exec) | |
2059 | && ! target_has_execd (inferior_pid, &b->exec_pathname)) | |
2060 | continue; | |
30875e1c | 2061 | |
65b07ddc DT |
2062 | if (ep_is_exception_catchpoint (b) && |
2063 | !(current_exception_event = target_get_current_exception_event ())) | |
2064 | continue; | |
2065 | ||
2066 | /* Come here if it's a watchpoint, or if the break address matches */ | |
9f577285 | 2067 | |
bd5635a1 RP |
2068 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ |
2069 | ||
65b07ddc | 2070 | /* Watchpoints may change this, if not found to have triggered. */ |
cabd4da6 JK |
2071 | bs->stop = 1; |
2072 | bs->print = 1; | |
bd5635a1 | 2073 | |
11054881 | 2074 | sprintf (message, message1, b->number); |
999dd04b | 2075 | if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) |
bd5635a1 | 2076 | { |
6e45c399 | 2077 | switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL)) |
bd5635a1 | 2078 | { |
999dd04b | 2079 | case WP_DELETED: |
8af68e4e | 2080 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 2081 | bs->print_it = print_it_done; |
8af68e4e JK |
2082 | /* Stop. */ |
2083 | break; | |
2084 | case WP_VALUE_CHANGED: | |
2085 | /* Stop. */ | |
65b07ddc | 2086 | ++(b->hit_count); |
8af68e4e JK |
2087 | break; |
2088 | case WP_VALUE_NOT_CHANGED: | |
2089 | /* Don't stop. */ | |
cabd4da6 JK |
2090 | bs->print_it = print_it_noop; |
2091 | bs->stop = 0; | |
92fb1f2e SS |
2092 | /* Don't consider this a hit. */ |
2093 | --(b->hit_count); | |
bd5635a1 | 2094 | continue; |
8af68e4e JK |
2095 | default: |
2096 | /* Can't happen. */ | |
2097 | /* FALLTHROUGH */ | |
2098 | case 0: | |
2099 | /* Error from catch_errors. */ | |
999dd04b JL |
2100 | printf_filtered ("Watchpoint %d deleted.\n", b->number); |
2101 | if (b->related_breakpoint) | |
6b038bd9 | 2102 | b->related_breakpoint->disposition = del_at_next_stop; |
e51481f9 | 2103 | b->disposition = del_at_next_stop; |
8af68e4e | 2104 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 2105 | bs->print_it = print_it_done; |
999dd04b | 2106 | |
8af68e4e JK |
2107 | /* Stop. */ |
2108 | break; | |
bd5635a1 RP |
2109 | } |
2110 | } | |
11054881 KH |
2111 | else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) |
2112 | { | |
2113 | CORE_ADDR addr; | |
2114 | value_ptr v; | |
2115 | int found = 0; | |
2116 | ||
2117 | addr = target_stopped_data_address(); | |
2118 | if (addr == 0) continue; | |
2119 | for (v = b->val_chain; v; v = v->next) | |
2120 | { | |
2121 | if (v->lval == lval_memory) | |
2122 | { | |
2123 | CORE_ADDR vaddr; | |
2124 | ||
2125 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2126 | if (addr == vaddr) | |
2127 | found = 1; | |
2128 | } | |
2129 | } | |
2130 | if (found) | |
6e45c399 | 2131 | switch (catch_errors (watchpoint_check, bs, message, RETURN_MASK_ALL)) |
11054881 KH |
2132 | { |
2133 | case WP_DELETED: | |
2134 | /* We've already printed what needs to be printed. */ | |
2135 | bs->print_it = print_it_done; | |
2136 | /* Stop. */ | |
2137 | break; | |
2138 | case WP_VALUE_CHANGED: | |
2139 | case WP_VALUE_NOT_CHANGED: | |
2140 | /* Stop. */ | |
65b07ddc | 2141 | ++(b->hit_count); |
11054881 KH |
2142 | break; |
2143 | default: | |
2144 | /* Can't happen. */ | |
2145 | case 0: | |
2146 | /* Error from catch_errors. */ | |
2147 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
e51481f9 | 2148 | if (b->related_breakpoint) |
6b038bd9 | 2149 | b->related_breakpoint->disposition = del_at_next_stop; |
e51481f9 | 2150 | b->disposition = del_at_next_stop; |
11054881 KH |
2151 | /* We've already printed what needs to be printed. */ |
2152 | bs->print_it = print_it_done; | |
2153 | break; | |
2154 | } | |
2155 | } | |
65b07ddc DT |
2156 | else |
2157 | { | |
2158 | /* By definition, an encountered breakpoint is a triggered | |
2159 | breakpoint. */ | |
2160 | ++(b->hit_count); | |
2161 | ||
2162 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2163 | real_breakpoint = 1; | |
2164 | } | |
bd5635a1 | 2165 | |
6ee2da94 FCE |
2166 | if (b->frame && b->frame != (get_current_frame ())->frame && |
2167 | (b->type == bp_step_resume && | |
65b07ddc | 2168 | (INNER_THAN (get_current_frame ()->frame, b->frame)))) |
cabd4da6 | 2169 | bs->stop = 0; |
bd5635a1 RP |
2170 | else |
2171 | { | |
fee933f1 | 2172 | int value_is_zero = 0; |
bd5635a1 RP |
2173 | |
2174 | if (b->cond) | |
2175 | { | |
2176 | /* Need to select the frame, with all that implies | |
2177 | so that the conditions will have the right context. */ | |
2178 | select_frame (get_current_frame (), 0); | |
bdbd5f50 | 2179 | value_is_zero |
6e45c399 | 2180 | = catch_errors (breakpoint_cond_eval, (b->cond), |
fe675038 JK |
2181 | "Error in testing breakpoint condition:\n", |
2182 | RETURN_MASK_ALL); | |
06b6c733 | 2183 | /* FIXME-someday, should give breakpoint # */ |
bd5635a1 RP |
2184 | free_all_values (); |
2185 | } | |
bdbd5f50 | 2186 | if (b->cond && value_is_zero) |
bd5635a1 | 2187 | { |
cabd4da6 | 2188 | bs->stop = 0; |
92fb1f2e SS |
2189 | /* Don't consider this a hit. */ |
2190 | --(b->hit_count); | |
bd5635a1 RP |
2191 | } |
2192 | else if (b->ignore_count > 0) | |
2193 | { | |
2194 | b->ignore_count--; | |
cabd4da6 | 2195 | bs->stop = 0; |
bd5635a1 RP |
2196 | } |
2197 | else | |
2198 | { | |
2199 | /* We will stop here */ | |
30875e1c | 2200 | if (b->disposition == disable) |
bd5635a1 RP |
2201 | b->enable = disabled; |
2202 | bs->commands = b->commands; | |
2203 | if (b->silent) | |
cabd4da6 | 2204 | bs->print = 0; |
65b07ddc DT |
2205 | if (bs->commands && |
2206 | (STREQ ("silent", bs->commands->line) || | |
2207 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
bd5635a1 RP |
2208 | { |
2209 | bs->commands = bs->commands->next; | |
cabd4da6 | 2210 | bs->print = 0; |
bd5635a1 RP |
2211 | } |
2212 | } | |
2213 | } | |
cabd4da6 JK |
2214 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
2215 | if (bs->stop == 0 || bs->print == 0) | |
2216 | bs->print_it = print_it_noop; | |
bd5635a1 RP |
2217 | } |
2218 | ||
2219 | bs->next = NULL; /* Terminate the chain */ | |
2220 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
6b038bd9 DT |
2221 | |
2222 | if ((DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) && bs) | |
bd5635a1 | 2223 | { |
bd5635a1 RP |
2224 | if (real_breakpoint) |
2225 | { | |
2226 | *pc = bp_addr; | |
2227 | #if defined (SHIFT_INST_REGS) | |
817ac7f8 | 2228 | SHIFT_INST_REGS(); |
bd5635a1 RP |
2229 | #else /* No SHIFT_INST_REGS. */ |
2230 | write_pc (bp_addr); | |
2231 | #endif /* No SHIFT_INST_REGS. */ | |
2232 | } | |
bd5635a1 | 2233 | } |
999dd04b JL |
2234 | |
2235 | /* The value of a hardware watchpoint hasn't changed, but the | |
2236 | intermediate memory locations we are watching may have. */ | |
11054881 KH |
2237 | if (bs && ! bs->stop && |
2238 | (bs->breakpoint_at->type == bp_hardware_watchpoint || | |
2239 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2240 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
999dd04b JL |
2241 | { |
2242 | remove_breakpoints (); | |
2243 | insert_breakpoints (); | |
2244 | } | |
bd5635a1 RP |
2245 | return bs; |
2246 | } | |
cabd4da6 JK |
2247 | \f |
2248 | /* Tell what to do about this bpstat. */ | |
fe675038 | 2249 | struct bpstat_what |
cabd4da6 JK |
2250 | bpstat_what (bs) |
2251 | bpstat bs; | |
2252 | { | |
2253 | /* Classify each bpstat as one of the following. */ | |
2254 | enum class { | |
fe675038 JK |
2255 | /* This bpstat element has no effect on the main_action. */ |
2256 | no_effect = 0, | |
cabd4da6 JK |
2257 | |
2258 | /* There was a watchpoint, stop but don't print. */ | |
2259 | wp_silent, | |
2260 | ||
2261 | /* There was a watchpoint, stop and print. */ | |
2262 | wp_noisy, | |
2263 | ||
2264 | /* There was a breakpoint but we're not stopping. */ | |
2265 | bp_nostop, | |
2266 | ||
2267 | /* There was a breakpoint, stop but don't print. */ | |
2268 | bp_silent, | |
2269 | ||
2270 | /* There was a breakpoint, stop and print. */ | |
2271 | bp_noisy, | |
2272 | ||
2273 | /* We hit the longjmp breakpoint. */ | |
2274 | long_jump, | |
2275 | ||
2276 | /* We hit the longjmp_resume breakpoint. */ | |
2277 | long_resume, | |
2278 | ||
d7e7e851 JK |
2279 | /* We hit the step_resume breakpoint. */ |
2280 | step_resume, | |
2281 | ||
bcc37718 JK |
2282 | /* We hit the through_sigtramp breakpoint. */ |
2283 | through_sig, | |
2284 | ||
27b6a1fa JL |
2285 | /* We hit the shared library event breakpoint. */ |
2286 | shlib_event, | |
2287 | ||
65b07ddc DT |
2288 | /* We caught a shared library event. */ |
2289 | catch_shlib_event, | |
2290 | ||
cabd4da6 JK |
2291 | /* This is just used to count how many enums there are. */ |
2292 | class_last | |
2293 | }; | |
2294 | ||
2295 | /* Here is the table which drives this routine. So that we can | |
2296 | format it pretty, we define some abbreviations for the | |
2297 | enum bpstat_what codes. */ | |
27b6a1fa JL |
2298 | #define kc BPSTAT_WHAT_KEEP_CHECKING |
2299 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2300 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2301 | #define sgl BPSTAT_WHAT_SINGLE | |
2302 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2303 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2304 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
d7e7e851 | 2305 | #define sr BPSTAT_WHAT_STEP_RESUME |
bcc37718 | 2306 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP |
27b6a1fa | 2307 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
65b07ddc | 2308 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK |
d7e7e851 | 2309 | |
cabd4da6 JK |
2310 | /* "Can't happen." Might want to print an error message. |
2311 | abort() is not out of the question, but chances are GDB is just | |
2312 | a bit confused, not unusable. */ | |
2313 | #define err BPSTAT_WHAT_STOP_NOISY | |
2314 | ||
2315 | /* Given an old action and a class, come up with a new action. */ | |
84d59861 JK |
2316 | /* One interesting property of this table is that wp_silent is the same |
2317 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2318 | after stopping, the check for whether to step over a breakpoint | |
2319 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
2320 | reference to how we stopped. We retain separate wp_silent and bp_silent | |
2321 | codes in case we want to change that someday. */ | |
d7e7e851 JK |
2322 | |
2323 | /* step_resume entries: a step resume breakpoint overrides another | |
2324 | breakpoint of signal handling (see comment in wait_for_inferior | |
2325 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
bcc37718 JK |
2326 | /* We handle the through_sigtramp_breakpoint the same way; having both |
2327 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
d7e7e851 | 2328 | |
fe675038 | 2329 | static const enum bpstat_what_main_action |
cabd4da6 JK |
2330 | table[(int)class_last][(int)BPSTAT_WHAT_LAST] = |
2331 | { | |
2332 | /* old action */ | |
65b07ddc DT |
2333 | /* kc ss sn sgl slr clr clrs sr ts shl shlr |
2334 | */ | |
2335 | /*no_effect*/ {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2336 | /*wp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2337 | /*wp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2338 | /*bp_nostop*/ {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2339 | /*bp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2340 | /*bp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2341 | /*long_jump*/ {slr, ss, sn, slr, err, err, err, sr, ts, shl, shlr}, | |
2342 | /*long_resume*/ {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2343 | /*step_resume*/ {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2344 | /*through_sig*/ {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2345 | /*shlib*/ {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2346 | /*catch_shlib*/ {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2347 | }; | |
2348 | ||
27b6a1fa JL |
2349 | #undef kc |
2350 | #undef ss | |
2351 | #undef sn | |
2352 | #undef sgl | |
2353 | #undef slr | |
2354 | #undef clr | |
2355 | #undef clrs | |
cabd4da6 | 2356 | #undef err |
bcc37718 JK |
2357 | #undef sr |
2358 | #undef ts | |
27b6a1fa | 2359 | #undef shl |
65b07ddc | 2360 | #undef shlr |
fe675038 | 2361 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
84d59861 | 2362 | struct bpstat_what retval; |
cabd4da6 | 2363 | |
cef4c2e7 | 2364 | retval.call_dummy = 0; |
cabd4da6 JK |
2365 | for (; bs != NULL; bs = bs->next) |
2366 | { | |
fee933f1 | 2367 | enum class bs_class = no_effect; |
cabd4da6 JK |
2368 | if (bs->breakpoint_at == NULL) |
2369 | /* I suspect this can happen if it was a momentary breakpoint | |
2370 | which has since been deleted. */ | |
2371 | continue; | |
2372 | switch (bs->breakpoint_at->type) | |
2373 | { | |
65b07ddc DT |
2374 | case bp_none: |
2375 | continue; | |
2376 | ||
cabd4da6 | 2377 | case bp_breakpoint: |
11054881 | 2378 | case bp_hardware_breakpoint: |
cabd4da6 JK |
2379 | case bp_until: |
2380 | case bp_finish: | |
2381 | if (bs->stop) | |
2382 | { | |
2383 | if (bs->print) | |
2384 | bs_class = bp_noisy; | |
2385 | else | |
2386 | bs_class = bp_silent; | |
2387 | } | |
2388 | else | |
2389 | bs_class = bp_nostop; | |
2390 | break; | |
2391 | case bp_watchpoint: | |
999dd04b | 2392 | case bp_hardware_watchpoint: |
11054881 KH |
2393 | case bp_read_watchpoint: |
2394 | case bp_access_watchpoint: | |
cabd4da6 JK |
2395 | if (bs->stop) |
2396 | { | |
2397 | if (bs->print) | |
2398 | bs_class = wp_noisy; | |
2399 | else | |
2400 | bs_class = wp_silent; | |
2401 | } | |
2402 | else | |
fe675038 JK |
2403 | /* There was a watchpoint, but we're not stopping. This requires |
2404 | no further action. */ | |
2405 | bs_class = no_effect; | |
cabd4da6 JK |
2406 | break; |
2407 | case bp_longjmp: | |
2408 | bs_class = long_jump; | |
2409 | break; | |
2410 | case bp_longjmp_resume: | |
2411 | bs_class = long_resume; | |
2412 | break; | |
fe675038 | 2413 | case bp_step_resume: |
fe675038 JK |
2414 | if (bs->stop) |
2415 | { | |
d7e7e851 | 2416 | bs_class = step_resume; |
fe675038 JK |
2417 | } |
2418 | else | |
2419 | /* It is for the wrong frame. */ | |
2420 | bs_class = bp_nostop; | |
bcc37718 JK |
2421 | break; |
2422 | case bp_through_sigtramp: | |
2423 | bs_class = through_sig; | |
fe675038 | 2424 | break; |
999dd04b JL |
2425 | case bp_watchpoint_scope: |
2426 | bs_class = bp_nostop; | |
2427 | break; | |
27b6a1fa JL |
2428 | case bp_shlib_event: |
2429 | bs_class = shlib_event; | |
2430 | break; | |
65b07ddc DT |
2431 | case bp_catch_load: |
2432 | case bp_catch_unload: | |
2433 | /* Only if this catchpoint triggered should we cause the | |
2434 | step-out-of-dld behaviour. Otherwise, we ignore this | |
2435 | catchpoint. */ | |
2436 | if (bs->stop) | |
2437 | bs_class = catch_shlib_event; | |
2438 | else | |
2439 | bs_class = no_effect; | |
2440 | break; | |
2441 | case bp_catch_fork: | |
2442 | case bp_catch_vfork: | |
2443 | case bp_catch_exec: | |
2444 | if (bs->stop) | |
2445 | { | |
2446 | if (bs->print) | |
2447 | bs_class = bp_noisy; | |
2448 | else | |
2449 | bs_class = bp_silent; | |
2450 | } | |
2451 | else | |
2452 | /* There was a catchpoint, but we're not stopping. This requires | |
2453 | no further action. */ | |
2454 | bs_class = no_effect; | |
2455 | break; | |
2456 | case bp_catch_catch: | |
2457 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
2458 | bs_class = bp_nostop; | |
2459 | else if (bs->stop) | |
2460 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2461 | break; | |
2462 | case bp_catch_throw: | |
2463 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
2464 | bs_class = bp_nostop; | |
2465 | else if (bs->stop) | |
2466 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2467 | break; | |
84d59861 JK |
2468 | case bp_call_dummy: |
2469 | /* Make sure the action is stop (silent or noisy), so infrun.c | |
2470 | pops the dummy frame. */ | |
2471 | bs_class = bp_silent; | |
2472 | retval.call_dummy = 1; | |
bb7b3800 | 2473 | break; |
cabd4da6 JK |
2474 | } |
2475 | current_action = table[(int)bs_class][(int)current_action]; | |
2476 | } | |
84d59861 JK |
2477 | retval.main_action = current_action; |
2478 | return retval; | |
cabd4da6 | 2479 | } |
bd5635a1 | 2480 | |
30875e1c SG |
2481 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
2482 | without hardware support). This isn't related to a specific bpstat, | |
2483 | just to things like whether watchpoints are set. */ | |
2484 | ||
bd5635a1 RP |
2485 | int |
2486 | bpstat_should_step () | |
2487 | { | |
2488 | struct breakpoint *b; | |
2489 | ALL_BREAKPOINTS (b) | |
30875e1c | 2490 | if (b->enable == enabled && b->type == bp_watchpoint) |
bd5635a1 RP |
2491 | return 1; |
2492 | return 0; | |
2493 | } | |
65b07ddc DT |
2494 | |
2495 | /* Nonzero if there are enabled hardware watchpoints. */ | |
2496 | int | |
2497 | bpstat_have_active_hw_watchpoints () | |
2498 | { | |
2499 | struct breakpoint *b; | |
2500 | ALL_BREAKPOINTS (b) | |
2501 | if ((b->enable == enabled) && | |
2502 | (b->inserted) && | |
2503 | ((b->type == bp_hardware_watchpoint) || | |
2504 | (b->type == bp_read_watchpoint) || | |
2505 | (b->type == bp_access_watchpoint))) | |
2506 | return 1; | |
2507 | return 0; | |
2508 | } | |
2509 | ||
bd5635a1 | 2510 | \f |
65b07ddc DT |
2511 | /* Given a bpstat that records zero or more triggered eventpoints, this |
2512 | function returns another bpstat which contains only the catchpoints | |
2513 | on that first list, if any. */ | |
2514 | void | |
2515 | bpstat_get_triggered_catchpoints (ep_list, cp_list) | |
2516 | bpstat ep_list; | |
2517 | bpstat * cp_list; | |
2518 | { | |
2519 | struct bpstats root_bs[1]; | |
2520 | bpstat bs = root_bs; | |
2521 | struct breakpoint * ep; | |
2522 | char * dll_pathname; | |
2523 | ||
2524 | bpstat_clear (cp_list); | |
2525 | root_bs->next = NULL; | |
2526 | ||
2527 | for (; ep_list != NULL; ep_list = ep_list->next ) | |
2528 | { | |
2529 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
2530 | ep = ep_list->breakpoint_at; | |
2531 | if (ep == NULL) | |
2532 | break; | |
2533 | if ((ep->type != bp_catch_load) && | |
2534 | (ep->type != bp_catch_unload) && | |
2535 | (ep->type != bp_catch_catch) && | |
2536 | (ep->type != bp_catch_throw)) /* pai: (temp) ADD fork/vfork here!! */ | |
2537 | continue; | |
2538 | ||
2539 | /* Yes; add it to the list. */ | |
2540 | bs = bpstat_alloc (ep, bs); | |
2541 | *bs = *ep_list; | |
2542 | bs->next = NULL; | |
2543 | bs = root_bs->next; | |
2544 | ||
2545 | #if defined(SOLIB_ADD) | |
2546 | /* Also, for each triggered catchpoint, tag it with the name of | |
2547 | the library that caused this trigger. (We copy the name now, | |
2548 | because it's only guaranteed to be available NOW, when the | |
2549 | catchpoint triggers. Clients who may wish to know the name | |
2550 | later must get it from the catchpoint itself.) */ | |
2551 | if (ep->triggered_dll_pathname != NULL) | |
2552 | free (ep->triggered_dll_pathname); | |
2553 | if (ep->type == bp_catch_load) | |
2554 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid); | |
2555 | else | |
2556 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid); | |
2557 | #else | |
2558 | dll_pathname = NULL; | |
2559 | #endif | |
2560 | if (dll_pathname) | |
2561 | { | |
2562 | ep->triggered_dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
2563 | strcpy (ep->triggered_dll_pathname, dll_pathname); | |
2564 | } | |
2565 | else | |
2566 | ep->triggered_dll_pathname = NULL; | |
2567 | } | |
2568 | ||
2569 | *cp_list = bs; | |
2570 | } | |
2571 | ||
bd5635a1 RP |
2572 | /* Print information on breakpoint number BNUM, or -1 if all. |
2573 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
2574 | is nonzero, process only watchpoints. */ | |
2575 | ||
65b07ddc DT |
2576 | typedef struct { |
2577 | enum bptype type; | |
2578 | char * description; | |
2579 | } ep_type_description_t; | |
2580 | ||
bd5635a1 | 2581 | static void |
c8950965 | 2582 | breakpoint_1 (bnum, allflag) |
bd5635a1 | 2583 | int bnum; |
80ba48f5 | 2584 | int allflag; |
bd5635a1 RP |
2585 | { |
2586 | register struct breakpoint *b; | |
2587 | register struct command_line *l; | |
2588 | register struct symbol *sym; | |
2589 | CORE_ADDR last_addr = (CORE_ADDR)-1; | |
30875e1c | 2590 | int found_a_breakpoint = 0; |
65b07ddc DT |
2591 | static ep_type_description_t bptypes[] = |
2592 | { | |
2593 | {bp_none, "?deleted?"}, | |
2594 | {bp_breakpoint, "breakpoint"}, | |
2595 | {bp_hardware_breakpoint, "hw breakpoint"}, | |
2596 | {bp_until, "until"}, | |
2597 | {bp_finish, "finish"}, | |
2598 | {bp_watchpoint, "watchpoint"}, | |
2599 | {bp_hardware_watchpoint, "hw watchpoint"}, | |
2600 | {bp_read_watchpoint, "read watchpoint"}, | |
2601 | {bp_access_watchpoint, "acc watchpoint"}, | |
2602 | {bp_longjmp, "longjmp"}, | |
2603 | {bp_longjmp_resume, "longjmp resume"}, | |
2604 | {bp_step_resume, "step resume"}, | |
2605 | {bp_through_sigtramp, "sigtramp"}, | |
2606 | {bp_watchpoint_scope, "watchpoint scope"}, | |
2607 | {bp_call_dummy, "call dummy"}, | |
2608 | {bp_shlib_event, "shlib events"}, | |
2609 | {bp_catch_load, "catch load"}, | |
2610 | {bp_catch_unload, "catch unload"}, | |
2611 | {bp_catch_fork, "catch fork"}, | |
2612 | {bp_catch_vfork, "catch vfork"}, | |
2613 | {bp_catch_exec, "catch exec"}, | |
2614 | {bp_catch_catch, "catch catch"}, | |
2615 | {bp_catch_throw, "catch throw"} | |
2616 | }; | |
2617 | ||
e51481f9 | 2618 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; |
647e52ea | 2619 | static char bpenables[] = "nyn"; |
0a62ff36 | 2620 | char wrap_indent[80]; |
30875e1c | 2621 | |
bd5635a1 | 2622 | ALL_BREAKPOINTS (b) |
30875e1c SG |
2623 | if (bnum == -1 |
2624 | || bnum == b->number) | |
bd5635a1 | 2625 | { |
80ba48f5 SG |
2626 | /* We only print out user settable breakpoints unless the allflag is set. */ |
2627 | if (!allflag | |
2628 | && b->type != bp_breakpoint | |
65b07ddc DT |
2629 | && b->type != bp_catch_load |
2630 | && b->type != bp_catch_unload | |
2631 | && b->type != bp_catch_fork | |
2632 | && b->type != bp_catch_vfork | |
2633 | && b->type != bp_catch_exec | |
2634 | && b->type != bp_catch_catch | |
2635 | && b->type != bp_catch_throw | |
11054881 | 2636 | && b->type != bp_hardware_breakpoint |
999dd04b | 2637 | && b->type != bp_watchpoint |
11054881 KH |
2638 | && b->type != bp_read_watchpoint |
2639 | && b->type != bp_access_watchpoint | |
999dd04b | 2640 | && b->type != bp_hardware_watchpoint) |
80ba48f5 SG |
2641 | continue; |
2642 | ||
30875e1c | 2643 | if (!found_a_breakpoint++) |
47ebe8fd | 2644 | { |
f2d9c058 KH |
2645 | annotate_breakpoints_headers (); |
2646 | ||
2647 | annotate_field (0); | |
2648 | printf_filtered ("Num "); | |
2649 | annotate_field (1); | |
2650 | printf_filtered ("Type "); | |
2651 | annotate_field (2); | |
2652 | printf_filtered ("Disp "); | |
2653 | annotate_field (3); | |
2654 | printf_filtered ("Enb "); | |
2655 | if (addressprint) | |
2656 | { | |
2657 | annotate_field (4); | |
2658 | printf_filtered ("Address "); | |
2659 | } | |
2660 | annotate_field (5); | |
2661 | printf_filtered ("What\n"); | |
2662 | ||
2663 | annotate_breakpoints_table (); | |
2664 | } | |
2665 | ||
2666 | annotate_record (); | |
2667 | annotate_field (0); | |
2668 | printf_filtered ("%-3d ", b->number); | |
2669 | annotate_field (1); | |
65b07ddc DT |
2670 | if ((int)b->type > (sizeof(bptypes)/sizeof(bptypes[0]))) |
2671 | error ("bptypes table does not describe type #%d.", (int)b->type); | |
2672 | if ((int)b->type != bptypes[(int)b->type].type) | |
2673 | error ("bptypes table does not describe type #%d?", (int)b->type); | |
2674 | printf_filtered ("%-14s ", bptypes[(int)b->type].description); | |
f2d9c058 KH |
2675 | annotate_field (2); |
2676 | printf_filtered ("%-4s ", bpdisps[(int)b->disposition]); | |
2677 | annotate_field (3); | |
47ebe8fd JK |
2678 | printf_filtered ("%-3c ", bpenables[(int)b->enable]); |
2679 | ||
0a62ff36 JK |
2680 | strcpy (wrap_indent, " "); |
2681 | if (addressprint) | |
2682 | strcat (wrap_indent, " "); | |
30875e1c | 2683 | switch (b->type) |
bd5635a1 | 2684 | { |
30875e1c | 2685 | case bp_watchpoint: |
999dd04b | 2686 | case bp_hardware_watchpoint: |
11054881 KH |
2687 | case bp_read_watchpoint: |
2688 | case bp_access_watchpoint: | |
47ebe8fd JK |
2689 | /* Field 4, the address, is omitted (which makes the columns |
2690 | not line up too nicely with the headers, but the effect | |
2691 | is relatively readable). */ | |
9f577285 | 2692 | annotate_field (5); |
199b2450 | 2693 | print_expression (b->exp, gdb_stdout); |
30875e1c | 2694 | break; |
65b07ddc DT |
2695 | |
2696 | case bp_catch_load: | |
2697 | case bp_catch_unload: | |
2698 | /* Field 4, the address, is omitted (which makes the columns | |
2699 | not line up too nicely with the headers, but the effect | |
2700 | is relatively readable). */ | |
2701 | annotate_field (5); | |
2702 | if (b->dll_pathname == NULL) | |
2703 | printf_filtered ("<any library> "); | |
2704 | else | |
2705 | printf_filtered ("library \"%s\" ", b->dll_pathname); | |
2706 | break; | |
2707 | ||
2708 | case bp_catch_fork: | |
2709 | case bp_catch_vfork: | |
2710 | /* Field 4, the address, is omitted (which makes the columns | |
2711 | not line up too nicely with the headers, but the effect | |
2712 | is relatively readable). */ | |
2713 | annotate_field (5); | |
2714 | if (b->forked_inferior_pid != 0) | |
2715 | printf_filtered ("process %d ", b->forked_inferior_pid); | |
2716 | break; | |
2717 | ||
2718 | case bp_catch_exec: | |
2719 | /* Field 4, the address, is omitted (which makes the columns | |
2720 | not line up too nicely with the headers, but the effect | |
2721 | is relatively readable). */ | |
2722 | annotate_field (5); | |
2723 | if (b->exec_pathname != NULL) | |
2724 | printf_filtered ("program \"%s\" ", b->exec_pathname); | |
2725 | break; | |
2726 | case bp_catch_catch: | |
2727 | /* Field 4, the address, is omitted (which makes the columns | |
2728 | not line up too nicely with the headers, but the effect | |
2729 | is relatively readable). */ | |
2730 | annotate_field (5); | |
2731 | printf_filtered ("exception catch "); | |
2732 | break; | |
2733 | case bp_catch_throw: | |
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 throw "); | |
2739 | break; | |
84d59861 | 2740 | |
30875e1c | 2741 | case bp_breakpoint: |
11054881 | 2742 | case bp_hardware_breakpoint: |
80ba48f5 SG |
2743 | case bp_until: |
2744 | case bp_finish: | |
2745 | case bp_longjmp: | |
2746 | case bp_longjmp_resume: | |
84d59861 | 2747 | case bp_step_resume: |
bcc37718 | 2748 | case bp_through_sigtramp: |
999dd04b | 2749 | case bp_watchpoint_scope: |
bb7b3800 | 2750 | case bp_call_dummy: |
27b6a1fa | 2751 | case bp_shlib_event: |
bd5635a1 | 2752 | if (addressprint) |
47ebe8fd | 2753 | { |
f2d9c058 | 2754 | annotate_field (4); |
47ebe8fd JK |
2755 | /* FIXME-32x64: need a print_address_numeric with |
2756 | field width */ | |
2757 | printf_filtered | |
2758 | ("%s ", | |
2759 | local_hex_string_custom | |
2760 | ((unsigned long) b->address, "08l")); | |
2761 | } | |
2762 | ||
f2d9c058 | 2763 | annotate_field (5); |
bd5635a1 RP |
2764 | |
2765 | last_addr = b->address; | |
d889f6b7 | 2766 | if (b->source_file) |
bd5635a1 | 2767 | { |
6b038bd9 | 2768 | sym = find_pc_sect_function (b->address, b->section); |
bd5635a1 RP |
2769 | if (sym) |
2770 | { | |
199b2450 TL |
2771 | fputs_filtered ("in ", gdb_stdout); |
2772 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
0a62ff36 | 2773 | wrap_here (wrap_indent); |
199b2450 | 2774 | fputs_filtered (" at ", gdb_stdout); |
bd5635a1 | 2775 | } |
199b2450 | 2776 | fputs_filtered (b->source_file, gdb_stdout); |
bd5635a1 RP |
2777 | printf_filtered (":%d", b->line_number); |
2778 | } | |
2779 | else | |
199b2450 | 2780 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); |
fee933f1 | 2781 | break; |
bd5635a1 RP |
2782 | } |
2783 | ||
65b07ddc DT |
2784 | if (b->thread != -1) |
2785 | printf_filtered (" thread %d", b->thread ); | |
2786 | ||
bd5635a1 RP |
2787 | printf_filtered ("\n"); |
2788 | ||
2789 | if (b->frame) | |
833e0d94 | 2790 | { |
f2d9c058 | 2791 | annotate_field (6); |
47ebe8fd | 2792 | |
833e0d94 | 2793 | printf_filtered ("\tstop only in stack frame at "); |
d24c0599 | 2794 | print_address_numeric (b->frame, 1, gdb_stdout); |
833e0d94 | 2795 | printf_filtered ("\n"); |
bcc37718 | 2796 | } |
47ebe8fd | 2797 | |
bd5635a1 RP |
2798 | if (b->cond) |
2799 | { | |
f2d9c058 | 2800 | annotate_field (7); |
47ebe8fd | 2801 | |
bd5635a1 | 2802 | printf_filtered ("\tstop only if "); |
199b2450 | 2803 | print_expression (b->cond, gdb_stdout); |
bd5635a1 RP |
2804 | printf_filtered ("\n"); |
2805 | } | |
47ebe8fd | 2806 | |
647e52ea SG |
2807 | if (b->thread != -1) |
2808 | { | |
2809 | /* FIXME should make an annotation for this */ | |
2810 | printf_filtered ("\tstop only in thread %d\n", b->thread); | |
2811 | } | |
2812 | ||
9f577285 SS |
2813 | if (show_breakpoint_hit_counts && b->hit_count) |
2814 | { | |
2815 | /* FIXME should make an annotation for this */ | |
65b07ddc DT |
2816 | if (ep_is_catchpoint (b)) |
2817 | printf_filtered ("\tcatchpoint"); | |
2818 | else | |
2819 | printf_filtered ("\tbreakpoint"); | |
2820 | printf_filtered (" already hit %d time%s\n", | |
2821 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
9f577285 SS |
2822 | } |
2823 | ||
bd5635a1 | 2824 | if (b->ignore_count) |
47ebe8fd | 2825 | { |
f2d9c058 | 2826 | annotate_field (8); |
47ebe8fd JK |
2827 | |
2828 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
2829 | } | |
2830 | ||
bd5635a1 | 2831 | if ((l = b->commands)) |
47ebe8fd | 2832 | { |
f2d9c058 | 2833 | annotate_field (9); |
47ebe8fd JK |
2834 | |
2835 | while (l) | |
2836 | { | |
0f8cdd9b | 2837 | print_command_line (l, 4); |
47ebe8fd JK |
2838 | l = l->next; |
2839 | } | |
2840 | } | |
bd5635a1 RP |
2841 | } |
2842 | ||
fee933f1 RP |
2843 | if (!found_a_breakpoint) |
2844 | { | |
2845 | if (bnum == -1) | |
2846 | printf_filtered ("No breakpoints or watchpoints.\n"); | |
2847 | else | |
2848 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); | |
2849 | } | |
30875e1c SG |
2850 | else |
2851 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
2852 | that a comparison of an unsigned with -1 is always false. */ | |
2853 | if (last_addr != (CORE_ADDR)-1) | |
2854 | set_next_address (last_addr); | |
47ebe8fd | 2855 | |
f2d9c058 | 2856 | annotate_breakpoints_table_end (); |
bd5635a1 RP |
2857 | } |
2858 | ||
bdbd5f50 | 2859 | /* ARGSUSED */ |
bd5635a1 RP |
2860 | static void |
2861 | breakpoints_info (bnum_exp, from_tty) | |
2862 | char *bnum_exp; | |
2863 | int from_tty; | |
2864 | { | |
2865 | int bnum = -1; | |
2866 | ||
2867 | if (bnum_exp) | |
2868 | bnum = parse_and_eval_address (bnum_exp); | |
2869 | ||
c8950965 | 2870 | breakpoint_1 (bnum, 0); |
80ba48f5 SG |
2871 | } |
2872 | ||
9b280a7f JG |
2873 | #if MAINTENANCE_CMDS |
2874 | ||
80ba48f5 | 2875 | /* ARGSUSED */ |
65b07ddc | 2876 | void |
9b280a7f | 2877 | maintenance_info_breakpoints (bnum_exp, from_tty) |
80ba48f5 SG |
2878 | char *bnum_exp; |
2879 | int from_tty; | |
2880 | { | |
2881 | int bnum = -1; | |
2882 | ||
2883 | if (bnum_exp) | |
2884 | bnum = parse_and_eval_address (bnum_exp); | |
2885 | ||
c8950965 | 2886 | breakpoint_1 (bnum, 1); |
bd5635a1 RP |
2887 | } |
2888 | ||
9b280a7f JG |
2889 | #endif |
2890 | ||
bd5635a1 RP |
2891 | /* Print a message describing any breakpoints set at PC. */ |
2892 | ||
2893 | static void | |
6b038bd9 DT |
2894 | describe_other_breakpoints (pc, section) |
2895 | CORE_ADDR pc; | |
2896 | asection *section; | |
bd5635a1 RP |
2897 | { |
2898 | register int others = 0; | |
2899 | register struct breakpoint *b; | |
2900 | ||
2901 | ALL_BREAKPOINTS (b) | |
2902 | if (b->address == pc) | |
6b038bd9 DT |
2903 | if (overlay_debugging == 0 || |
2904 | b->section == section) | |
2905 | others++; | |
bd5635a1 RP |
2906 | if (others > 0) |
2907 | { | |
833e0d94 | 2908 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); |
bd5635a1 RP |
2909 | ALL_BREAKPOINTS (b) |
2910 | if (b->address == pc) | |
6b038bd9 DT |
2911 | if (overlay_debugging == 0 || |
2912 | b->section == section) | |
2913 | { | |
2914 | others--; | |
2915 | printf_filtered | |
2916 | ("%d%s%s ", | |
2917 | b->number, | |
65b07ddc | 2918 | ((b->enable == disabled || b->enable == shlib_disabled || b->enable == call_disabled) |
6b038bd9 DT |
2919 | ? " (disabled)" : ""), |
2920 | (others > 1) ? "," : ((others == 1) ? " and" : "")); | |
2921 | } | |
833e0d94 | 2922 | printf_filtered ("also set at pc "); |
d24c0599 | 2923 | print_address_numeric (pc, 1, gdb_stdout); |
833e0d94 | 2924 | printf_filtered (".\n"); |
bd5635a1 RP |
2925 | } |
2926 | } | |
2927 | \f | |
2928 | /* Set the default place to put a breakpoint | |
2929 | for the `break' command with no arguments. */ | |
2930 | ||
2931 | void | |
2932 | set_default_breakpoint (valid, addr, symtab, line) | |
2933 | int valid; | |
2934 | CORE_ADDR addr; | |
2935 | struct symtab *symtab; | |
2936 | int line; | |
2937 | { | |
2938 | default_breakpoint_valid = valid; | |
2939 | default_breakpoint_address = addr; | |
2940 | default_breakpoint_symtab = symtab; | |
2941 | default_breakpoint_line = line; | |
2942 | } | |
2943 | ||
2944 | /* Rescan breakpoints at address ADDRESS, | |
2945 | marking the first one as "first" and any others as "duplicates". | |
2946 | This is so that the bpt instruction is only inserted once. */ | |
2947 | ||
2948 | static void | |
6b038bd9 | 2949 | check_duplicates (address, section) |
bd5635a1 | 2950 | CORE_ADDR address; |
6b038bd9 | 2951 | asection *section; |
bd5635a1 RP |
2952 | { |
2953 | register struct breakpoint *b; | |
2954 | register int count = 0; | |
2955 | ||
30875e1c | 2956 | if (address == 0) /* Watchpoints are uninteresting */ |
f266e564 JK |
2957 | return; |
2958 | ||
bd5635a1 | 2959 | ALL_BREAKPOINTS (b) |
fa3764e2 JL |
2960 | if (b->enable != disabled |
2961 | && b->enable != shlib_disabled | |
65b07ddc | 2962 | && b->enable != call_disabled |
6b038bd9 DT |
2963 | && b->address == address |
2964 | && (overlay_debugging == 0 || b->section == section)) | |
bd5635a1 RP |
2965 | { |
2966 | count++; | |
2967 | b->duplicate = count > 1; | |
2968 | } | |
2969 | } | |
2970 | ||
2971 | /* Low level routine to set a breakpoint. | |
2972 | Takes as args the three things that every breakpoint must have. | |
2973 | Returns the breakpoint object so caller can set other things. | |
2974 | Does not set the breakpoint number! | |
f266e564 JK |
2975 | Does not print anything. |
2976 | ||
2977 | ==> This routine should not be called if there is a chance of later | |
2978 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
2979 | your arguments BEFORE calling this routine! */ | |
bd5635a1 | 2980 | |
895cc8ab | 2981 | struct breakpoint * |
bd5635a1 RP |
2982 | set_raw_breakpoint (sal) |
2983 | struct symtab_and_line sal; | |
2984 | { | |
2985 | register struct breakpoint *b, *b1; | |
2986 | ||
2987 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4ed3a9ea | 2988 | memset (b, 0, sizeof (*b)); |
bd5635a1 | 2989 | b->address = sal.pc; |
d889f6b7 JK |
2990 | if (sal.symtab == NULL) |
2991 | b->source_file = NULL; | |
2992 | else | |
2993 | b->source_file = savestring (sal.symtab->filename, | |
2994 | strlen (sal.symtab->filename)); | |
6b038bd9 | 2995 | b->section = sal.section; |
706dc3ce JL |
2996 | b->language = current_language->la_language; |
2997 | b->input_radix = input_radix; | |
199b2450 | 2998 | b->thread = -1; |
bd5635a1 RP |
2999 | b->line_number = sal.line; |
3000 | b->enable = enabled; | |
3001 | b->next = 0; | |
3002 | b->silent = 0; | |
3003 | b->ignore_count = 0; | |
3004 | b->commands = NULL; | |
30875e1c | 3005 | b->frame = 0; |
65b07ddc DT |
3006 | b->dll_pathname = NULL; |
3007 | b->triggered_dll_pathname = NULL; | |
3008 | b->forked_inferior_pid = 0; | |
3009 | b->exec_pathname = NULL; | |
bd5635a1 RP |
3010 | |
3011 | /* Add this breakpoint to the end of the chain | |
3012 | so that a list of breakpoints will come out in order | |
3013 | of increasing numbers. */ | |
3014 | ||
3015 | b1 = breakpoint_chain; | |
3016 | if (b1 == 0) | |
3017 | breakpoint_chain = b; | |
3018 | else | |
3019 | { | |
3020 | while (b1->next) | |
3021 | b1 = b1->next; | |
3022 | b1->next = b; | |
3023 | } | |
3024 | ||
6b038bd9 | 3025 | check_duplicates (sal.pc, sal.section); |
6c803036 | 3026 | breakpoints_changed (); |
bd5635a1 RP |
3027 | |
3028 | return b; | |
3029 | } | |
3030 | ||
39ce6829 PS |
3031 | #ifdef GET_LONGJMP_TARGET |
3032 | ||
30875e1c | 3033 | static void |
cd10c7e3 | 3034 | create_longjmp_breakpoint (func_name) |
30875e1c | 3035 | char *func_name; |
30875e1c | 3036 | { |
30875e1c SG |
3037 | struct symtab_and_line sal; |
3038 | struct breakpoint *b; | |
3039 | ||
6b038bd9 | 3040 | INIT_SAL (&sal); /* initialize to zeroes */ |
30875e1c SG |
3041 | if (func_name != NULL) |
3042 | { | |
3043 | struct minimal_symbol *m; | |
3044 | ||
e8bf33c4 | 3045 | m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *)NULL); |
30875e1c | 3046 | if (m) |
2d313932 | 3047 | sal.pc = SYMBOL_VALUE_ADDRESS (m); |
30875e1c SG |
3048 | else |
3049 | return; | |
3050 | } | |
6b038bd9 | 3051 | sal.section = find_pc_overlay (sal.pc); |
cd10c7e3 | 3052 | b = set_raw_breakpoint (sal); |
30875e1c SG |
3053 | if (!b) return; |
3054 | ||
80ba48f5 | 3055 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; |
30875e1c SG |
3056 | b->disposition = donttouch; |
3057 | b->enable = disabled; | |
3058 | b->silent = 1; | |
80ba48f5 SG |
3059 | if (func_name) |
3060 | b->addr_string = strsave(func_name); | |
3061 | b->number = internal_breakpoint_number--; | |
30875e1c | 3062 | } |
30875e1c | 3063 | |
39ce6829 PS |
3064 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
3065 | ||
30875e1c SG |
3066 | /* Call this routine when stepping and nexting to enable a breakpoint if we do |
3067 | a longjmp(). When we hit that breakpoint, call | |
3068 | set_longjmp_resume_breakpoint() to figure out where we are going. */ | |
3069 | ||
3070 | void | |
3071 | enable_longjmp_breakpoint() | |
3072 | { | |
80ba48f5 SG |
3073 | register struct breakpoint *b; |
3074 | ||
3075 | ALL_BREAKPOINTS (b) | |
3076 | if (b->type == bp_longjmp) | |
9b280a7f JG |
3077 | { |
3078 | b->enable = enabled; | |
6b038bd9 | 3079 | check_duplicates (b->address, b->section); |
9b280a7f | 3080 | } |
30875e1c SG |
3081 | } |
3082 | ||
3083 | void | |
3084 | disable_longjmp_breakpoint() | |
3085 | { | |
80ba48f5 SG |
3086 | register struct breakpoint *b; |
3087 | ||
3088 | ALL_BREAKPOINTS (b) | |
9b280a7f | 3089 | if ( b->type == bp_longjmp |
80ba48f5 | 3090 | || b->type == bp_longjmp_resume) |
9b280a7f JG |
3091 | { |
3092 | b->enable = disabled; | |
6b038bd9 | 3093 | check_duplicates (b->address, b->section); |
9b280a7f | 3094 | } |
30875e1c SG |
3095 | } |
3096 | ||
27b6a1fa JL |
3097 | #ifdef SOLIB_ADD |
3098 | void | |
3099 | remove_solib_event_breakpoints () | |
3100 | { | |
fa3764e2 | 3101 | register struct breakpoint *b, *temp; |
27b6a1fa | 3102 | |
fa3764e2 | 3103 | ALL_BREAKPOINTS_SAFE (b, temp) |
27b6a1fa JL |
3104 | if (b->type == bp_shlib_event) |
3105 | delete_breakpoint (b); | |
3106 | } | |
3107 | ||
3108 | void | |
3109 | create_solib_event_breakpoint (address) | |
3110 | CORE_ADDR address; | |
3111 | { | |
3112 | struct breakpoint *b; | |
3113 | struct symtab_and_line sal; | |
3114 | ||
6b038bd9 | 3115 | INIT_SAL (&sal); /* initialize to zeroes */ |
27b6a1fa | 3116 | sal.pc = address; |
6b038bd9 | 3117 | sal.section = find_pc_overlay (sal.pc); |
27b6a1fa JL |
3118 | b = set_raw_breakpoint (sal); |
3119 | b->number = internal_breakpoint_number--; | |
3120 | b->disposition = donttouch; | |
3121 | b->type = bp_shlib_event; | |
3122 | } | |
fa3764e2 | 3123 | |
65b07ddc DT |
3124 | void |
3125 | disable_breakpoints_in_shlibs () | |
3126 | { | |
3127 | struct breakpoint * b; | |
3128 | int disabled_shlib_breaks = 0; | |
3129 | ||
3130 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
3131 | ALL_BREAKPOINTS (b) | |
3132 | { | |
3133 | #if defined (PC_SOLIB) | |
3134 | if (((b->type == bp_breakpoint) || | |
3135 | (b->type == bp_hardware_breakpoint)) && | |
3136 | (b->enable != shlib_disabled) && | |
3137 | (b->enable != call_disabled) && | |
3138 | ! b->duplicate && | |
3139 | PC_SOLIB (b->address)) | |
3140 | { | |
3141 | b->enable = shlib_disabled; | |
3142 | if (!disabled_shlib_breaks) | |
3143 | { | |
3144 | target_terminal_ours_for_output (); | |
3145 | printf_filtered ("Temporarily disabling shared library breakpoints:\n"); | |
3146 | } | |
3147 | disabled_shlib_breaks = 1; | |
3148 | printf_filtered ("%d ", b->number); | |
3149 | } | |
3150 | #endif | |
3151 | } | |
3152 | if (disabled_shlib_breaks) | |
3153 | printf_filtered ("\n"); | |
3154 | } | |
3155 | ||
fa3764e2 JL |
3156 | /* Try to reenable any breakpoints in shared libraries. */ |
3157 | void | |
3158 | re_enable_breakpoints_in_shlibs () | |
3159 | { | |
3160 | struct breakpoint *b; | |
3161 | ||
65b07ddc DT |
3162 | ALL_BREAKPOINTS (b) |
3163 | if (b->enable == shlib_disabled) | |
3164 | { | |
3165 | char buf[1]; | |
3166 | ||
3167 | /* Do not reenable the breakpoint if the shared library | |
3168 | is still not mapped in. */ | |
3169 | if (target_read_memory (b->address, buf, 1) == 0) | |
3170 | b->enable = enabled; | |
3171 | } | |
3172 | } | |
3173 | ||
3174 | #endif | |
3175 | ||
3176 | static void | |
3177 | create_solib_load_unload_event_breakpoint (hookname, tempflag, dll_pathname, cond_string, bp_kind) | |
3178 | char * hookname; | |
3179 | int tempflag; | |
3180 | char * dll_pathname; | |
3181 | char * cond_string; | |
3182 | enum bptype bp_kind; | |
3183 | { | |
3184 | struct breakpoint * b; | |
3185 | struct symtabs_and_lines sals; | |
3186 | struct symtab_and_line sal; | |
3187 | struct cleanup * old_chain; | |
3188 | struct cleanup * canonical_strings_chain = NULL; | |
3189 | int i; | |
3190 | char * addr_start = hookname; | |
3191 | char * addr_end = NULL; | |
3192 | char ** canonical = (char **) NULL; | |
3193 | int thread = -1; /* All threads. */ | |
3194 | ||
3195 | /* Set a breakpoint on the specified hook. */ | |
3196 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
3197 | addr_end = hookname; | |
3198 | ||
3199 | if (sals.nelts == 0) | |
3200 | { | |
3201 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
3202 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
3203 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
3204 | return; | |
3205 | } | |
3206 | if (sals.nelts != 1) | |
3207 | { | |
3208 | warning ("Unable to set a unique breakpoint on dynamic linker callback."); | |
3209 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
3210 | return; | |
3211 | } | |
3212 | ||
3213 | /* Make sure that all storage allocated in decode_line_1 gets freed in case | |
3214 | the following errors out. */ | |
3215 | old_chain = make_cleanup (free, sals.sals); | |
3216 | if (canonical != (char **)NULL) | |
3217 | { | |
3218 | make_cleanup (free, canonical); | |
3219 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
3220 | if (canonical[0] != NULL) | |
3221 | make_cleanup (free, canonical[0]); | |
3222 | } | |
3223 | ||
3224 | resolve_sal_pc (&sals.sals[0]); | |
3225 | ||
3226 | /* Remove the canonical strings from the cleanup, they are needed below. */ | |
3227 | if (canonical != (char **)NULL) | |
3228 | discard_cleanups (canonical_strings_chain); | |
3229 | ||
3230 | b = set_raw_breakpoint (sals.sals[0]); | |
3231 | set_breakpoint_count (breakpoint_count + 1); | |
3232 | b->number = breakpoint_count; | |
3233 | b->cond = NULL; | |
3234 | b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string)); | |
3235 | b->thread = thread; | |
3236 | ||
3237 | if (canonical != (char **)NULL && canonical[0] != NULL) | |
3238 | b->addr_string = canonical[0]; | |
3239 | else if (addr_start) | |
3240 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
3241 | ||
3242 | b->enable = enabled; | |
3243 | b->disposition = tempflag ? del : donttouch; | |
3244 | ||
3245 | if (dll_pathname == NULL) | |
3246 | b->dll_pathname = NULL; | |
3247 | else | |
3248 | { | |
3249 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
3250 | strcpy (b->dll_pathname, dll_pathname); | |
3251 | } | |
3252 | b->type = bp_kind; | |
3253 | ||
3254 | mention (b); | |
3255 | do_cleanups (old_chain); | |
3256 | } | |
3257 | ||
3258 | void | |
3259 | create_solib_load_event_breakpoint (hookname, tempflag, dll_pathname, cond_string) | |
3260 | char * hookname; | |
3261 | int tempflag; | |
3262 | char * dll_pathname; | |
3263 | char * cond_string; | |
3264 | { | |
3265 | create_solib_load_unload_event_breakpoint (hookname, | |
3266 | tempflag, | |
3267 | dll_pathname, | |
3268 | cond_string, | |
3269 | bp_catch_load); | |
3270 | } | |
3271 | ||
3272 | void | |
3273 | create_solib_unload_event_breakpoint (hookname, tempflag, dll_pathname, cond_string) | |
3274 | char * hookname; | |
3275 | int tempflag; | |
3276 | char * dll_pathname; | |
3277 | char * cond_string; | |
3278 | { | |
3279 | create_solib_load_unload_event_breakpoint (hookname, | |
3280 | tempflag, | |
3281 | dll_pathname, | |
3282 | cond_string, | |
3283 | bp_catch_unload); | |
3284 | } | |
3285 | ||
3286 | static void | |
3287 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_kind) | |
3288 | int tempflag; | |
3289 | char * cond_string; | |
3290 | enum bptype bp_kind; | |
3291 | { | |
3292 | struct symtab_and_line sal; | |
3293 | struct breakpoint * b; | |
3294 | int thread = -1; /* All threads. */ | |
3295 | ||
3296 | INIT_SAL(&sal); | |
3297 | sal.pc = 0; | |
3298 | sal.symtab = NULL; | |
3299 | sal.line = 0; | |
3300 | ||
3301 | b = set_raw_breakpoint (sal); | |
3302 | set_breakpoint_count (breakpoint_count + 1); | |
3303 | b->number = breakpoint_count; | |
3304 | b->cond = NULL; | |
3305 | b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string)); | |
3306 | b->thread = thread; | |
3307 | b->addr_string = NULL; | |
3308 | b->enable = enabled; | |
3309 | b->disposition = tempflag ? del : donttouch; | |
3310 | b->forked_inferior_pid = 0; | |
3311 | ||
3312 | b->type = bp_kind; | |
3313 | ||
3314 | mention (b); | |
3315 | } | |
3316 | ||
3317 | void | |
3318 | create_fork_event_catchpoint (tempflag, cond_string) | |
3319 | int tempflag; | |
3320 | char * cond_string; | |
3321 | { | |
3322 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
3323 | } | |
3324 | ||
3325 | void | |
3326 | create_vfork_event_catchpoint (tempflag, cond_string) | |
3327 | int tempflag; | |
3328 | char * cond_string; | |
3329 | { | |
3330 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
3331 | } | |
3332 | ||
3333 | void | |
3334 | create_exec_event_catchpoint (tempflag, cond_string) | |
3335 | int tempflag; | |
3336 | char * cond_string; | |
3337 | { | |
3338 | struct symtab_and_line sal; | |
3339 | struct breakpoint * b; | |
3340 | int thread = -1; /* All threads. */ | |
3341 | ||
3342 | INIT_SAL(&sal); | |
3343 | sal.pc = 0; | |
3344 | sal.symtab = NULL; | |
3345 | sal.line = 0; | |
3346 | ||
3347 | b = set_raw_breakpoint (sal); | |
3348 | set_breakpoint_count (breakpoint_count + 1); | |
3349 | b->number = breakpoint_count; | |
3350 | b->cond = NULL; | |
3351 | b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string)); | |
3352 | b->thread = thread; | |
3353 | b->addr_string = NULL; | |
3354 | b->enable = enabled; | |
3355 | b->disposition = tempflag ? del : donttouch; | |
3356 | ||
3357 | b->type = bp_catch_exec; | |
fa3764e2 | 3358 | |
65b07ddc | 3359 | mention (b); |
fa3764e2 JL |
3360 | } |
3361 | ||
b607efe7 | 3362 | static int |
11054881 KH |
3363 | hw_breakpoint_used_count() |
3364 | { | |
3365 | register struct breakpoint *b; | |
3366 | int i = 0; | |
3367 | ||
3368 | ALL_BREAKPOINTS (b) | |
3369 | { | |
3370 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
3371 | i++; | |
3372 | } | |
3373 | ||
3374 | return i; | |
3375 | } | |
3376 | ||
b607efe7 | 3377 | static int |
11054881 KH |
3378 | hw_watchpoint_used_count(type, other_type_used) |
3379 | enum bptype type; | |
3380 | int *other_type_used; | |
3381 | { | |
3382 | register struct breakpoint *b; | |
3383 | int i = 0; | |
3384 | ||
3385 | *other_type_used = 0; | |
3386 | ALL_BREAKPOINTS (b) | |
3387 | { | |
3388 | if (b->enable == enabled) | |
3389 | { | |
3390 | if (b->type == type) i++; | |
3391 | else if ((b->type == bp_hardware_watchpoint || | |
3392 | b->type == bp_read_watchpoint || | |
3393 | b->type == bp_access_watchpoint) | |
3394 | && b->enable == enabled) | |
3395 | *other_type_used = 1; | |
3396 | } | |
3397 | } | |
3398 | return i; | |
3399 | } | |
3400 | ||
30875e1c SG |
3401 | /* Call this after hitting the longjmp() breakpoint. Use this to set a new |
3402 | breakpoint at the target of the jmp_buf. | |
80ba48f5 SG |
3403 | |
3404 | FIXME - This ought to be done by setting a temporary breakpoint that gets | |
65b07ddc | 3405 | deleted automatically... */ |
30875e1c SG |
3406 | |
3407 | void | |
3408 | set_longjmp_resume_breakpoint(pc, frame) | |
3409 | CORE_ADDR pc; | |
706dc3ce | 3410 | struct frame_info *frame; |
30875e1c | 3411 | { |
80ba48f5 SG |
3412 | register struct breakpoint *b; |
3413 | ||
3414 | ALL_BREAKPOINTS (b) | |
3415 | if (b->type == bp_longjmp_resume) | |
3416 | { | |
3417 | b->address = pc; | |
3418 | b->enable = enabled; | |
3419 | if (frame != NULL) | |
706dc3ce | 3420 | b->frame = frame->frame; |
80ba48f5 SG |
3421 | else |
3422 | b->frame = 0; | |
6b038bd9 | 3423 | check_duplicates (b->address, b->section); |
80ba48f5 SG |
3424 | return; |
3425 | } | |
30875e1c SG |
3426 | } |
3427 | ||
65b07ddc DT |
3428 | void |
3429 | disable_watchpoints_before_interactive_call_start () | |
3430 | { | |
3431 | struct breakpoint * b; | |
3432 | ||
3433 | ALL_BREAKPOINTS (b) | |
3434 | { | |
3435 | if (((b->type == bp_watchpoint) | |
3436 | || (b->type == bp_hardware_watchpoint) | |
3437 | || (b->type == bp_read_watchpoint) | |
3438 | || (b->type == bp_access_watchpoint) | |
3439 | || ep_is_exception_catchpoint (b)) | |
3440 | && (b->enable == enabled)) | |
3441 | { | |
3442 | b->enable = call_disabled; | |
3443 | check_duplicates (b->address, b->section); | |
3444 | } | |
3445 | } | |
3446 | } | |
3447 | ||
3448 | void | |
3449 | enable_watchpoints_after_interactive_call_stop () | |
3450 | { | |
3451 | struct breakpoint * b; | |
3452 | ||
3453 | ALL_BREAKPOINTS (b) | |
3454 | { | |
3455 | if (((b->type == bp_watchpoint) | |
3456 | || (b->type == bp_hardware_watchpoint) | |
3457 | || (b->type == bp_read_watchpoint) | |
3458 | || (b->type == bp_access_watchpoint) | |
3459 | || ep_is_exception_catchpoint (b)) | |
3460 | && (b->enable == call_disabled)) | |
3461 | { | |
3462 | b->enable = enabled; | |
3463 | check_duplicates (b->address, b->section); | |
3464 | } | |
3465 | } | |
3466 | } | |
3467 | ||
3468 | ||
bd5635a1 RP |
3469 | /* Set a breakpoint that will evaporate an end of command |
3470 | at address specified by SAL. | |
3471 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
3472 | ||
30875e1c SG |
3473 | struct breakpoint * |
3474 | set_momentary_breakpoint (sal, frame, type) | |
bd5635a1 | 3475 | struct symtab_and_line sal; |
706dc3ce | 3476 | struct frame_info *frame; |
30875e1c | 3477 | enum bptype type; |
bd5635a1 RP |
3478 | { |
3479 | register struct breakpoint *b; | |
3480 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
3481 | b->type = type; |
3482 | b->enable = enabled; | |
3483 | b->disposition = donttouch; | |
706dc3ce | 3484 | b->frame = (frame ? frame->frame : 0); |
2b576293 C |
3485 | |
3486 | /* If we're debugging a multi-threaded program, then we | |
3487 | want momentary breakpoints to be active in only a | |
3488 | single thread of control. */ | |
3489 | if (in_thread_list (inferior_pid)) | |
3490 | b->thread = pid_to_thread_id (inferior_pid); | |
3491 | ||
30875e1c | 3492 | return b; |
bd5635a1 RP |
3493 | } |
3494 | ||
bd5635a1 RP |
3495 | \f |
3496 | /* Tell the user we have just set a breakpoint B. */ | |
9f577285 | 3497 | |
bd5635a1 RP |
3498 | static void |
3499 | mention (b) | |
3500 | struct breakpoint *b; | |
3501 | { | |
9f577285 SS |
3502 | int say_where = 0; |
3503 | ||
d2a85f11 JMD |
3504 | /* FIXME: This is misplaced; mention() is called by things (like hitting a |
3505 | watchpoint) other than breakpoint creation. It should be possible to | |
3506 | clean this up and at the same time replace the random calls to | |
3507 | breakpoint_changed with this hook, as has already been done for | |
3508 | delete_breakpoint_hook and so on. */ | |
754e5da2 SG |
3509 | if (create_breakpoint_hook) |
3510 | create_breakpoint_hook (b); | |
3511 | ||
30875e1c | 3512 | switch (b->type) |
bd5635a1 | 3513 | { |
65b07ddc DT |
3514 | case bp_none: |
3515 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
3516 | break; | |
30875e1c | 3517 | case bp_watchpoint: |
bd5635a1 | 3518 | printf_filtered ("Watchpoint %d: ", b->number); |
199b2450 | 3519 | print_expression (b->exp, gdb_stdout); |
30875e1c | 3520 | break; |
999dd04b JL |
3521 | case bp_hardware_watchpoint: |
3522 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
3523 | print_expression (b->exp, gdb_stdout); | |
3524 | break; | |
11054881 KH |
3525 | case bp_read_watchpoint: |
3526 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
3527 | print_expression (b->exp, gdb_stdout); | |
3528 | break; | |
3529 | case bp_access_watchpoint: | |
65b07ddc | 3530 | printf_filtered ("Hardware access (read/write) watchpoint %d: ",b->number); |
11054881 KH |
3531 | print_expression (b->exp, gdb_stdout); |
3532 | break; | |
30875e1c | 3533 | case bp_breakpoint: |
9f577285 SS |
3534 | printf_filtered ("Breakpoint %d", b->number); |
3535 | say_where = 1; | |
51b57ded | 3536 | break; |
11054881 | 3537 | case bp_hardware_breakpoint: |
9f577285 SS |
3538 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
3539 | say_where = 1; | |
11054881 | 3540 | break; |
65b07ddc DT |
3541 | case bp_catch_load: |
3542 | case bp_catch_unload: | |
3543 | printf_filtered ("Catchpoint %d (%s %s)", | |
3544 | b->number, | |
3545 | (b->type == bp_catch_load) ? "load" : "unload", | |
3546 | (b->dll_pathname != NULL) ? b->dll_pathname : "<any library>"); | |
3547 | break; | |
3548 | case bp_catch_fork: | |
3549 | case bp_catch_vfork: | |
3550 | printf_filtered ("Catchpoint %d (%s)", | |
3551 | b->number, | |
3552 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
3553 | break; | |
3554 | case bp_catch_exec: | |
3555 | printf_filtered ("Catchpoint %d (exec)", | |
3556 | b->number); | |
3557 | break; | |
3558 | case bp_catch_catch: | |
3559 | case bp_catch_throw: | |
3560 | printf_filtered ("Catchpoint %d (%s)", | |
3561 | b->number, | |
3562 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
3563 | break; | |
3564 | ||
51b57ded FF |
3565 | case bp_until: |
3566 | case bp_finish: | |
3567 | case bp_longjmp: | |
3568 | case bp_longjmp_resume: | |
fee933f1 | 3569 | case bp_step_resume: |
bcc37718 | 3570 | case bp_through_sigtramp: |
199b2450 | 3571 | case bp_call_dummy: |
999dd04b | 3572 | case bp_watchpoint_scope: |
fa3764e2 | 3573 | case bp_shlib_event: |
51b57ded | 3574 | break; |
bd5635a1 | 3575 | } |
9f577285 SS |
3576 | if (say_where) |
3577 | { | |
3578 | if (addressprint || b->source_file == NULL) | |
3579 | { | |
3580 | printf_filtered (" at "); | |
3581 | print_address_numeric (b->address, 1, gdb_stdout); | |
3582 | } | |
3583 | if (b->source_file) | |
3584 | printf_filtered (": file %s, line %d.", | |
3585 | b->source_file, b->line_number); | |
65b07ddc DT |
3586 | TUIDO(((TuiOpaqueFuncPtr)tui_vAllSetHasBreakAt, b, 1)); |
3587 | TUIDO(((TuiOpaqueFuncPtr)tuiUpdateAllExecInfos)); | |
9f577285 | 3588 | } |
bd5635a1 RP |
3589 | printf_filtered ("\n"); |
3590 | } | |
3591 | ||
bd5635a1 RP |
3592 | \f |
3593 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
11054881 KH |
3594 | flag: first bit : 0 non-temporary, 1 temporary. |
3595 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
bd5635a1 RP |
3596 | |
3597 | static void | |
11054881 | 3598 | break_command_1 (arg, flag, from_tty) |
bd5635a1 | 3599 | char *arg; |
11054881 | 3600 | int flag, from_tty; |
bd5635a1 | 3601 | { |
11054881 | 3602 | int tempflag, hardwareflag; |
bd5635a1 RP |
3603 | struct symtabs_and_lines sals; |
3604 | struct symtab_and_line sal; | |
3605 | register struct expression *cond = 0; | |
3606 | register struct breakpoint *b; | |
3607 | ||
3608 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
3609 | char *cond_start = NULL; | |
fee933f1 | 3610 | char *cond_end = NULL; |
bd5635a1 RP |
3611 | /* Pointers in arg to the start, and one past the end, |
3612 | of the address part. */ | |
3613 | char *addr_start = NULL; | |
fee933f1 | 3614 | char *addr_end = NULL; |
d889f6b7 | 3615 | struct cleanup *old_chain; |
fee933f1 | 3616 | struct cleanup *canonical_strings_chain = NULL; |
d889f6b7 | 3617 | char **canonical = (char **)NULL; |
bd5635a1 | 3618 | int i; |
199b2450 | 3619 | int thread; |
bd5635a1 | 3620 | |
e8bf33c4 JK |
3621 | hardwareflag = flag & BP_HARDWAREFLAG; |
3622 | tempflag = flag & BP_TEMPFLAG; | |
11054881 | 3623 | |
bd5635a1 RP |
3624 | sals.sals = NULL; |
3625 | sals.nelts = 0; | |
3626 | ||
6b038bd9 | 3627 | INIT_SAL (&sal); /* initialize to zeroes */ |
bd5635a1 RP |
3628 | |
3629 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
3630 | ||
3631 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
3632 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
3633 | { | |
3634 | if (default_breakpoint_valid) | |
3635 | { | |
3636 | sals.sals = (struct symtab_and_line *) | |
3637 | xmalloc (sizeof (struct symtab_and_line)); | |
3638 | sal.pc = default_breakpoint_address; | |
3639 | sal.line = default_breakpoint_line; | |
3640 | sal.symtab = default_breakpoint_symtab; | |
6b038bd9 | 3641 | sal.section = find_pc_overlay (sal.pc); |
bd5635a1 RP |
3642 | sals.sals[0] = sal; |
3643 | sals.nelts = 1; | |
3644 | } | |
3645 | else | |
3646 | error ("No default breakpoint address now."); | |
3647 | } | |
3648 | else | |
3649 | { | |
3650 | addr_start = arg; | |
3651 | ||
3652 | /* Force almost all breakpoints to be in terms of the | |
3653 | current_source_symtab (which is decode_line_1's default). This | |
3654 | should produce the results we want almost all of the time while | |
3655 | leaving default_breakpoint_* alone. */ | |
3656 | if (default_breakpoint_valid | |
3657 | && (!current_source_symtab | |
3658 | || (arg && (*arg == '+' || *arg == '-')))) | |
3659 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 3660 | default_breakpoint_line, &canonical); |
bd5635a1 | 3661 | else |
d889f6b7 | 3662 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical); |
bd5635a1 RP |
3663 | |
3664 | addr_end = arg; | |
3665 | } | |
3666 | ||
3667 | if (! sals.nelts) | |
3668 | return; | |
3669 | ||
d889f6b7 JK |
3670 | /* Make sure that all storage allocated in decode_line_1 gets freed in case |
3671 | the following `for' loop errors out. */ | |
3672 | old_chain = make_cleanup (free, sals.sals); | |
3673 | if (canonical != (char **)NULL) | |
3674 | { | |
3675 | make_cleanup (free, canonical); | |
3676 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
3677 | for (i = 0; i < sals.nelts; i++) | |
3678 | { | |
3679 | if (canonical[i] != NULL) | |
3680 | make_cleanup (free, canonical[i]); | |
3681 | } | |
3682 | } | |
3683 | ||
199b2450 TL |
3684 | thread = -1; /* No specific thread yet */ |
3685 | ||
30875e1c SG |
3686 | /* Resolve all line numbers to PC's, and verify that conditions |
3687 | can be parsed, before setting any breakpoints. */ | |
bd5635a1 RP |
3688 | for (i = 0; i < sals.nelts; i++) |
3689 | { | |
199b2450 TL |
3690 | char *tok, *end_tok; |
3691 | int toklen; | |
3692 | ||
30875e1c | 3693 | resolve_sal_pc (&sals.sals[i]); |
65b07ddc DT |
3694 | |
3695 | /* It's possible for the PC to be nonzero, but still an illegal | |
3696 | value on some targets. | |
3697 | ||
3698 | For example, on HP-UX if you start gdb, and before running the | |
3699 | inferior you try to set a breakpoint on a shared library function | |
3700 | "foo" where the inferior doesn't call "foo" directly but does | |
3701 | pass its address to another function call, then we do find a | |
3702 | minimal symbol for the "foo", but it's address is invalid. | |
3703 | (Appears to be an index into a table that the loader sets up | |
3704 | when the inferior is run.) | |
3705 | ||
3706 | Give the target a chance to bless sals.sals[i].pc before we | |
3707 | try to make a breakpoint for it. */ | |
3708 | if (PC_REQUIRES_RUN_BEFORE_USE(sals.sals[i].pc)) | |
3709 | { | |
3710 | error ("Cannot break on %s without a running program.", addr_start); | |
3711 | } | |
bd5635a1 | 3712 | |
199b2450 TL |
3713 | tok = arg; |
3714 | ||
3715 | while (tok && *tok) | |
bd5635a1 | 3716 | { |
199b2450 TL |
3717 | while (*tok == ' ' || *tok == '\t') |
3718 | tok++; | |
3719 | ||
3720 | end_tok = tok; | |
3721 | ||
3722 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
3723 | end_tok++; | |
3724 | ||
3725 | toklen = end_tok - tok; | |
3726 | ||
3727 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
3728 | { | |
3729 | tok = cond_start = end_tok + 1; | |
3730 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
3731 | cond_end = tok; | |
3732 | } | |
3733 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
bd5635a1 | 3734 | { |
199b2450 TL |
3735 | char *tmptok; |
3736 | ||
3737 | tok = end_tok + 1; | |
3738 | tmptok = tok; | |
3739 | thread = strtol (tok, &tok, 0); | |
3740 | if (tok == tmptok) | |
3741 | error ("Junk after thread keyword."); | |
3742 | if (!valid_thread_id (thread)) | |
3743 | error ("Unknown thread %d\n", thread); | |
bd5635a1 RP |
3744 | } |
3745 | else | |
3746 | error ("Junk at end of arguments."); | |
3747 | } | |
bd5635a1 | 3748 | } |
11054881 KH |
3749 | if (hardwareflag) |
3750 | { | |
557f3a0e SS |
3751 | int i, target_resources_ok; |
3752 | ||
3753 | i = hw_breakpoint_used_count (); | |
3754 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
3755 | bp_hardware_breakpoint, i + sals.nelts, 0); | |
11054881 KH |
3756 | if (target_resources_ok == 0) |
3757 | error ("No hardware breakpoint support in the target."); | |
3758 | else if (target_resources_ok < 0) | |
3759 | error ("Hardware breakpoints used exceeds limit."); | |
3760 | } | |
bd5635a1 | 3761 | |
d889f6b7 JK |
3762 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
3763 | if (canonical != (char **)NULL) | |
3764 | discard_cleanups (canonical_strings_chain); | |
3765 | ||
30875e1c | 3766 | /* Now set all the breakpoints. */ |
bd5635a1 RP |
3767 | for (i = 0; i < sals.nelts; i++) |
3768 | { | |
3769 | sal = sals.sals[i]; | |
3770 | ||
3771 | if (from_tty) | |
6b038bd9 | 3772 | describe_other_breakpoints (sal.pc, sal.section); |
bd5635a1 RP |
3773 | |
3774 | b = set_raw_breakpoint (sal); | |
3775 | set_breakpoint_count (breakpoint_count + 1); | |
3776 | b->number = breakpoint_count; | |
11054881 | 3777 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; |
bd5635a1 | 3778 | b->cond = cond; |
199b2450 | 3779 | b->thread = thread; |
0a97f6c4 | 3780 | |
d889f6b7 JK |
3781 | /* If a canonical line spec is needed use that instead of the |
3782 | command string. */ | |
3783 | if (canonical != (char **)NULL && canonical[i] != NULL) | |
3784 | b->addr_string = canonical[i]; | |
3785 | else if (addr_start) | |
bd5635a1 RP |
3786 | b->addr_string = savestring (addr_start, addr_end - addr_start); |
3787 | if (cond_start) | |
3788 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
3789 | ||
30875e1c | 3790 | b->enable = enabled; |
e8bf33c4 | 3791 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 RP |
3792 | mention (b); |
3793 | } | |
3794 | ||
3795 | if (sals.nelts > 1) | |
3796 | { | |
833e0d94 JK |
3797 | printf_filtered ("Multiple breakpoints were set.\n"); |
3798 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 3799 | } |
d889f6b7 | 3800 | do_cleanups (old_chain); |
bd5635a1 RP |
3801 | } |
3802 | ||
65b07ddc DT |
3803 | static void |
3804 | break_at_finish_at_depth_command_1 (arg, flag, from_tty) | |
3805 | char *arg; | |
3806 | int flag; | |
3807 | int from_tty; | |
3808 | { | |
3809 | struct frame_info *frame; | |
3810 | CORE_ADDR low, high, selected_pc = 0; | |
3811 | char *extra_args, *level_arg, *addr_string; | |
3812 | int extra_args_len = 0, if_arg = 0; | |
3813 | ||
3814 | if (!arg || | |
3815 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
3816 | { | |
3817 | ||
3818 | if (default_breakpoint_valid) | |
3819 | { | |
3820 | if (selected_frame) | |
3821 | { | |
3822 | selected_pc = selected_frame->pc; | |
3823 | if (arg) | |
3824 | if_arg = 1; | |
3825 | } | |
3826 | else | |
3827 | error ("No selected frame."); | |
3828 | } | |
3829 | else | |
3830 | error ("No default breakpoint address now."); | |
3831 | } | |
3832 | else | |
3833 | { | |
3834 | extra_args = strchr (arg, ' '); | |
3835 | if (extra_args) | |
3836 | { | |
3837 | extra_args++; | |
3838 | extra_args_len = strlen (extra_args); | |
3839 | level_arg = (char *) xmalloc (extra_args - arg); | |
3840 | strncpy (level_arg, arg, extra_args - arg - 1); | |
3841 | level_arg[extra_args - arg - 1] = '\0'; | |
3842 | } | |
3843 | else | |
3844 | { | |
3845 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
3846 | strcpy (level_arg, arg); | |
3847 | } | |
3848 | ||
3849 | frame = parse_frame_specification (level_arg); | |
3850 | if (frame) | |
3851 | selected_pc = frame->pc; | |
3852 | else | |
3853 | selected_pc = 0; | |
3854 | } | |
3855 | if (if_arg) | |
3856 | { | |
3857 | extra_args = arg; | |
3858 | extra_args_len = strlen (arg); | |
3859 | } | |
3860 | ||
3861 | if (selected_pc) | |
3862 | { | |
3863 | if (find_pc_partial_function(selected_pc, (char **)NULL, &low, &high)) | |
3864 | { | |
3865 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
3866 | if (extra_args_len) | |
3867 | sprintf (addr_string, "*0x%x %s", high, extra_args); | |
3868 | else | |
3869 | sprintf (addr_string, "*0x%x", high); | |
3870 | break_command_1 (addr_string, flag, from_tty); | |
3871 | free (addr_string); | |
3872 | } | |
3873 | else | |
3874 | error ("No function contains the specified address"); | |
3875 | } | |
3876 | else | |
3877 | error ("Unable to set breakpoint at procedure exit"); | |
3878 | } | |
3879 | ||
3880 | ||
3881 | static void | |
3882 | break_at_finish_command_1 (arg, flag, from_tty) | |
3883 | char *arg; | |
3884 | int flag; | |
3885 | int from_tty; | |
3886 | { | |
3887 | char *addr_string, *break_string, *beg_addr_string; | |
3888 | CORE_ADDR low, high; | |
3889 | struct symtabs_and_lines sals; | |
3890 | struct symtab_and_line sal; | |
3891 | struct cleanup *old_chain; | |
3892 | char *extra_args; | |
3893 | int extra_args_len = 0; | |
3894 | int i, if_arg = 0; | |
3895 | ||
3896 | if (!arg || | |
3897 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
3898 | { | |
3899 | if (default_breakpoint_valid) | |
3900 | { | |
3901 | if (selected_frame) | |
3902 | { | |
3903 | addr_string = (char *) xmalloc (15); | |
3904 | sprintf (addr_string, "*0x%x", selected_frame->pc); | |
3905 | if (arg) | |
3906 | if_arg = 1; | |
3907 | } | |
3908 | else | |
3909 | error ("No selected frame."); | |
3910 | } | |
3911 | else | |
3912 | error ("No default breakpoint address now."); | |
3913 | } | |
3914 | else | |
3915 | { | |
3916 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
3917 | strcpy (addr_string, arg); | |
3918 | } | |
3919 | ||
3920 | if (if_arg) | |
3921 | { | |
3922 | extra_args = arg; | |
3923 | extra_args_len = strlen (arg); | |
3924 | } | |
3925 | else | |
3926 | if (arg) | |
3927 | { | |
3928 | /* get the stuff after the function name or address */ | |
3929 | extra_args = strchr (arg, ' '); | |
3930 | if (extra_args) | |
3931 | { | |
3932 | extra_args++; | |
3933 | extra_args_len = strlen (extra_args); | |
3934 | } | |
3935 | } | |
3936 | ||
3937 | sals.sals = NULL; | |
3938 | sals.nelts = 0; | |
3939 | ||
3940 | beg_addr_string = addr_string; | |
3941 | sals = decode_line_1 (&addr_string, 1, (struct symtab *)NULL, 0, | |
3942 | (char ***)NULL); | |
3943 | ||
3944 | free (beg_addr_string); | |
3945 | old_chain = make_cleanup (free, sals.sals); | |
3946 | for (i = 0; (i < sals.nelts); i++) | |
3947 | { | |
3948 | sal = sals.sals[i]; | |
3949 | if (find_pc_partial_function (sal.pc, (char **)NULL, &low, &high)) | |
3950 | { | |
3951 | break_string = (char *) xmalloc (extra_args_len + 26); | |
3952 | if (extra_args_len) | |
3953 | sprintf (break_string, "*0x%x %s", high, extra_args); | |
3954 | else | |
3955 | sprintf (break_string, "*0x%x", high); | |
3956 | break_command_1 (break_string, flag, from_tty); | |
3957 | free(break_string); | |
3958 | } | |
3959 | else | |
3960 | error ("No function contains the specified address"); | |
3961 | } | |
3962 | if (sals.nelts > 1) | |
3963 | { | |
3964 | printf_filtered ("Multiple breakpoints were set.\n"); | |
3965 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
3966 | } | |
3967 | do_cleanups(old_chain); | |
3968 | } | |
3969 | ||
3970 | ||
30875e1c SG |
3971 | /* Helper function for break_command_1 and disassemble_command. */ |
3972 | ||
3973 | void | |
3974 | resolve_sal_pc (sal) | |
3975 | struct symtab_and_line *sal; | |
3976 | { | |
3977 | CORE_ADDR pc; | |
3978 | ||
6b038bd9 | 3979 | if (sal->pc == 0 && sal->symtab != NULL) |
30875e1c | 3980 | { |
895cc8ab | 3981 | if (!find_line_pc (sal->symtab, sal->line, &pc)) |
30875e1c SG |
3982 | error ("No line %d in file \"%s\".", |
3983 | sal->line, sal->symtab->filename); | |
3984 | sal->pc = pc; | |
3985 | } | |
6b038bd9 DT |
3986 | |
3987 | if (sal->section == 0 && sal->symtab != NULL) | |
3988 | { | |
3989 | struct blockvector *bv; | |
3990 | struct block *b; | |
3991 | struct symbol *sym; | |
3992 | int index; | |
3993 | ||
3994 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); | |
895cc8ab | 3995 | if (bv != NULL) |
6b038bd9 | 3996 | { |
895cc8ab KS |
3997 | b = BLOCKVECTOR_BLOCK (bv, index); |
3998 | sym = block_function (b); | |
3999 | if (sym != NULL) | |
4000 | { | |
4001 | fixup_symbol_section (sym, sal->symtab->objfile); | |
6ee2da94 FCE |
4002 | sal->section = SYMBOL_BFD_SECTION (sym); |
4003 | } | |
4004 | else | |
4005 | { | |
4006 | /* It really is worthwhile to have the section, so we'll just | |
4007 | have to look harder. This case can be executed if we have | |
4008 | line numbers but no functions (as can happen in assembly | |
4009 | source). */ | |
4010 | ||
4011 | struct minimal_symbol *msym; | |
4012 | ||
4013 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
4014 | if (msym) | |
4015 | sal->section = SYMBOL_BFD_SECTION (msym); | |
895cc8ab | 4016 | } |
6b038bd9 DT |
4017 | } |
4018 | } | |
30875e1c SG |
4019 | } |
4020 | ||
bd5635a1 RP |
4021 | void |
4022 | break_command (arg, from_tty) | |
4023 | char *arg; | |
4024 | int from_tty; | |
4025 | { | |
4026 | break_command_1 (arg, 0, from_tty); | |
4027 | } | |
4028 | ||
65b07ddc DT |
4029 | void |
4030 | break_at_finish_command (arg, from_tty) | |
4031 | char *arg; | |
4032 | int from_tty; | |
4033 | { | |
4034 | break_at_finish_command_1 (arg, 0, from_tty); | |
4035 | } | |
4036 | ||
4037 | void | |
4038 | break_at_finish_at_depth_command (arg, from_tty) | |
4039 | char *arg; | |
4040 | int from_tty; | |
4041 | { | |
4042 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
4043 | } | |
4044 | ||
4045 | void | |
bd5635a1 RP |
4046 | tbreak_command (arg, from_tty) |
4047 | char *arg; | |
4048 | int from_tty; | |
4049 | { | |
11054881 KH |
4050 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
4051 | } | |
4052 | ||
65b07ddc DT |
4053 | void |
4054 | tbreak_at_finish_command (arg, from_tty) | |
4055 | char *arg; | |
4056 | int from_tty; | |
4057 | { | |
4058 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
4059 | } | |
4060 | ||
11054881 KH |
4061 | static void |
4062 | hbreak_command (arg, from_tty) | |
4063 | char *arg; | |
4064 | int from_tty; | |
4065 | { | |
4066 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
4067 | } | |
4068 | ||
4069 | static void | |
4070 | thbreak_command (arg, from_tty) | |
4071 | char *arg; | |
4072 | int from_tty; | |
4073 | { | |
4074 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
bd5635a1 RP |
4075 | } |
4076 | ||
65b07ddc DT |
4077 | static void |
4078 | stop_command (arg, from_tty) | |
4079 | char *arg; | |
4080 | int from_tty; | |
4081 | { | |
4082 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
4083 | Usage: stop in <function | address>\n\ | |
4084 | stop at <line>\n"); | |
4085 | } | |
4086 | ||
4087 | static void | |
4088 | stopin_command (arg, from_tty) | |
4089 | char *arg; | |
4090 | int from_tty; | |
4091 | { | |
4092 | int badInput = 0; | |
4093 | ||
4094 | if (arg == (char *)NULL) | |
4095 | badInput = 1; | |
4096 | else if (*arg != '*') | |
4097 | { | |
4098 | char *argptr = arg; | |
4099 | int hasColon = 0; | |
4100 | ||
4101 | /* look for a ':'. If this is a line number specification, then say | |
4102 | it is bad, otherwise, it should be an address or function/method | |
4103 | name */ | |
4104 | while (*argptr && !hasColon) | |
4105 | { | |
4106 | hasColon = (*argptr == ':'); | |
4107 | argptr++; | |
4108 | } | |
4109 | ||
4110 | if (hasColon) | |
4111 | badInput = (*argptr != ':'); /* Not a class::method */ | |
4112 | else | |
4113 | badInput = isdigit(*arg); /* a simple line number */ | |
4114 | } | |
4115 | ||
4116 | if (badInput) | |
4117 | printf_filtered("Usage: stop in <function | address>\n"); | |
4118 | else | |
4119 | break_command_1 (arg, 0, from_tty); | |
4120 | } | |
4121 | ||
4122 | static void | |
4123 | stopat_command (arg, from_tty) | |
4124 | char *arg; | |
4125 | int from_tty; | |
4126 | { | |
4127 | int badInput = 0; | |
4128 | ||
4129 | if (arg == (char *)NULL || *arg == '*') /* no line number */ | |
4130 | badInput = 1; | |
4131 | else | |
4132 | { | |
4133 | char *argptr = arg; | |
4134 | int hasColon = 0; | |
4135 | ||
4136 | /* look for a ':'. If there is a '::' then get out, otherwise | |
4137 | it is probably a line number. */ | |
4138 | while (*argptr && !hasColon) | |
4139 | { | |
4140 | hasColon = (*argptr == ':'); | |
4141 | argptr++; | |
4142 | } | |
4143 | ||
4144 | if (hasColon) | |
4145 | badInput = (*argptr == ':'); /* we have class::method */ | |
4146 | else | |
4147 | badInput = !isdigit(*arg); /* not a line number */ | |
4148 | } | |
4149 | ||
4150 | if (badInput) | |
4151 | printf_filtered("Usage: stop at <line>\n"); | |
4152 | else | |
4153 | break_command_1 (arg, 0, from_tty); | |
4154 | } | |
4155 | ||
bdbd5f50 | 4156 | /* ARGSUSED */ |
65b07ddc | 4157 | /* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) */ |
bd5635a1 | 4158 | static void |
11054881 | 4159 | watch_command_1 (arg, accessflag, from_tty) |
bd5635a1 | 4160 | char *arg; |
11054881 | 4161 | int accessflag; |
bd5635a1 RP |
4162 | int from_tty; |
4163 | { | |
4164 | struct breakpoint *b; | |
4165 | struct symtab_and_line sal; | |
f266e564 JK |
4166 | struct expression *exp; |
4167 | struct block *exp_valid_block; | |
11054881 | 4168 | struct value *val, *mark; |
b607efe7 FF |
4169 | struct frame_info *frame; |
4170 | struct frame_info *prev_frame = NULL; | |
11054881 KH |
4171 | char *exp_start = NULL; |
4172 | char *exp_end = NULL; | |
4173 | char *tok, *end_tok; | |
4174 | int toklen; | |
4175 | char *cond_start = NULL; | |
4176 | char *cond_end = NULL; | |
4177 | struct expression *cond = NULL; | |
6b038bd9 | 4178 | int i, other_type_used, target_resources_ok = 0; |
11054881 KH |
4179 | enum bptype bp_type; |
4180 | int mem_cnt = 0; | |
bd5635a1 | 4181 | |
6b038bd9 | 4182 | INIT_SAL (&sal); /* initialize to zeroes */ |
bd5635a1 | 4183 | |
f266e564 JK |
4184 | /* Parse arguments. */ |
4185 | innermost_block = NULL; | |
11054881 KH |
4186 | exp_start = arg; |
4187 | exp = parse_exp_1 (&arg, 0, 0); | |
4188 | exp_end = arg; | |
f266e564 | 4189 | exp_valid_block = innermost_block; |
11054881 | 4190 | mark = value_mark (); |
f266e564 JK |
4191 | val = evaluate_expression (exp); |
4192 | release_value (val); | |
2d313932 JK |
4193 | if (VALUE_LAZY (val)) |
4194 | value_fetch_lazy (val); | |
f266e564 | 4195 | |
11054881 KH |
4196 | tok = arg; |
4197 | while (*tok == ' ' || *tok == '\t') | |
4198 | tok++; | |
4199 | end_tok = tok; | |
4200 | ||
4201 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4202 | end_tok++; | |
4203 | ||
4204 | toklen = end_tok - tok; | |
4205 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4206 | { | |
4207 | tok = cond_start = end_tok + 1; | |
4208 | cond = parse_exp_1 (&tok, 0, 0); | |
4209 | cond_end = tok; | |
4210 | } | |
4211 | if (*tok) | |
4212 | error("Junk at end of command."); | |
4213 | ||
4214 | if (accessflag == 1) bp_type = bp_read_watchpoint; | |
4215 | else if (accessflag == 2) bp_type = bp_access_watchpoint; | |
4216 | else bp_type = bp_hardware_watchpoint; | |
4217 | ||
4218 | mem_cnt = can_use_hardware_watchpoint (val); | |
4219 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
4220 | error ("Expression cannot be implemented with read/access watchpoint."); | |
4221 | if (mem_cnt != 0) { | |
4222 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
4223 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
4224 | bp_type, i + mem_cnt, other_type_used); | |
4225 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) | |
4226 | error ("Target does not have this type of hardware watchpoint support."); | |
4227 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) | |
4228 | error ("Target resources have been allocated for other types of watchpoints."); | |
4229 | } | |
65b07ddc DT |
4230 | |
4231 | #if defined(HPUXHPPA) | |
4232 | /* ??rehrauer: DTS #CHFts23014 notes that on HP-UX if you set a h/w | |
4233 | watchpoint before the "run" command, the inferior dies with a e.g., | |
4234 | SIGILL once you start it. I initially believed this was due to a | |
4235 | bad interaction between page protection traps and the initial | |
4236 | startup sequence by the dynamic linker. | |
4237 | ||
4238 | However, I tried avoiding that by having HP-UX's implementation of | |
4239 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid | |
4240 | yet, which forced slow watches before a "run" or "attach", and it | |
4241 | still fails somewhere in the startup code. | |
4242 | ||
4243 | Until I figure out what's happening, I'm disallowing watches altogether | |
4244 | before the "run" or "attach" command. We'll tell the user they must | |
4245 | set watches after getting the program started. */ | |
4246 | if (! target_has_execution) | |
4247 | { | |
4248 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
4249 | return; | |
4250 | } | |
4251 | #endif /* HPUXHPPA */ | |
11054881 | 4252 | |
f266e564 | 4253 | /* Now set up the breakpoint. */ |
bd5635a1 RP |
4254 | b = set_raw_breakpoint (sal); |
4255 | set_breakpoint_count (breakpoint_count + 1); | |
4256 | b->number = breakpoint_count; | |
30875e1c | 4257 | b->disposition = donttouch; |
f266e564 JK |
4258 | b->exp = exp; |
4259 | b->exp_valid_block = exp_valid_block; | |
11054881 | 4260 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
f266e564 | 4261 | b->val = val; |
11054881 KH |
4262 | b->cond = cond; |
4263 | if (cond_start) | |
4264 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
4265 | else | |
4266 | b->cond_string = 0; | |
4267 | ||
999dd04b JL |
4268 | frame = block_innermost_frame (exp_valid_block); |
4269 | if (frame) | |
4270 | { | |
4271 | prev_frame = get_prev_frame (frame); | |
706dc3ce | 4272 | b->watchpoint_frame = frame->frame; |
999dd04b JL |
4273 | } |
4274 | else | |
9e8db445 | 4275 | b->watchpoint_frame = (CORE_ADDR)0; |
999dd04b | 4276 | |
11054881 KH |
4277 | if (mem_cnt && target_resources_ok > 0) |
4278 | b->type = bp_type; | |
999dd04b JL |
4279 | else |
4280 | b->type = bp_watchpoint; | |
4281 | ||
4282 | /* If the expression is "local", then set up a "watchpoint scope" | |
4283 | breakpoint at the point where we've left the scope of the watchpoint | |
4284 | expression. */ | |
4285 | if (innermost_block) | |
4286 | { | |
999dd04b JL |
4287 | if (prev_frame) |
4288 | { | |
6b038bd9 DT |
4289 | struct breakpoint *scope_breakpoint; |
4290 | struct symtab_and_line scope_sal; | |
4291 | ||
4292 | INIT_SAL (&scope_sal); /* initialize to zeroes */ | |
4293 | scope_sal.pc = get_frame_pc (prev_frame); | |
4294 | scope_sal.section = find_pc_overlay (scope_sal.pc); | |
4295 | ||
999dd04b JL |
4296 | scope_breakpoint = set_raw_breakpoint (scope_sal); |
4297 | set_breakpoint_count (breakpoint_count + 1); | |
4298 | scope_breakpoint->number = breakpoint_count; | |
4299 | ||
4300 | scope_breakpoint->type = bp_watchpoint_scope; | |
4301 | scope_breakpoint->enable = enabled; | |
4302 | ||
4303 | /* Automatically delete the breakpoint when it hits. */ | |
e8bf33c4 | 4304 | scope_breakpoint->disposition = del; |
999dd04b JL |
4305 | |
4306 | /* Only break in the proper frame (help with recursion). */ | |
4307 | scope_breakpoint->frame = prev_frame->frame; | |
4308 | ||
4309 | /* Set the address at which we will stop. */ | |
4310 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
4311 | ||
4312 | /* The scope breakpoint is related to the watchpoint. We | |
4313 | will need to act on them together. */ | |
4314 | b->related_breakpoint = scope_breakpoint; | |
4315 | } | |
4316 | } | |
11054881 | 4317 | value_free_to_mark (mark); |
bd5635a1 RP |
4318 | mention (b); |
4319 | } | |
999dd04b | 4320 | |
11054881 KH |
4321 | /* Return count of locations need to be watched and can be handled |
4322 | in hardware. If the watchpoint can not be handled | |
999dd04b JL |
4323 | in hardware return zero. */ |
4324 | ||
65b07ddc DT |
4325 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) |
4326 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(byte_size) \ | |
4327 | ((byte_size) <= (REGISTER_SIZE)) | |
4328 | #endif | |
4329 | ||
999dd04b | 4330 | static int |
11054881 KH |
4331 | can_use_hardware_watchpoint (v) |
4332 | struct value *v; | |
999dd04b | 4333 | { |
11054881 | 4334 | int found_memory_cnt = 0; |
65b07ddc DT |
4335 | |
4336 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
4337 | if (! can_use_hw_watchpoints) | |
4338 | return 0; | |
999dd04b JL |
4339 | |
4340 | /* Make sure all the intermediate values are in memory. Also make sure | |
4341 | we found at least one memory expression. Guards against watch 0x12345, | |
4342 | which is meaningless, but could cause errors if one tries to insert a | |
4343 | hardware watchpoint for the constant expression. */ | |
11054881 | 4344 | for ( ; v; v = v->next) |
999dd04b | 4345 | { |
11054881 KH |
4346 | if (v->lval == lval_memory) |
4347 | { | |
65b07ddc | 4348 | if (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (TYPE_LENGTH (VALUE_TYPE (v)))) |
11054881 KH |
4349 | found_memory_cnt++; |
4350 | } | |
4351 | else if (v->lval != not_lval && v->modifiable == 0) | |
999dd04b | 4352 | return 0; |
999dd04b JL |
4353 | } |
4354 | ||
4355 | /* The expression itself looks suitable for using a hardware | |
4356 | watchpoint, but give the target machine a chance to reject it. */ | |
11054881 KH |
4357 | return found_memory_cnt; |
4358 | } | |
4359 | ||
4360 | static void watch_command (arg, from_tty) | |
4361 | char *arg; | |
4362 | int from_tty; | |
4363 | { | |
4364 | watch_command_1 (arg, 0, from_tty); | |
4365 | } | |
4366 | ||
4367 | static void rwatch_command (arg, from_tty) | |
4368 | char *arg; | |
4369 | int from_tty; | |
4370 | { | |
4371 | watch_command_1 (arg, 1, from_tty); | |
4372 | } | |
4373 | ||
4374 | static void awatch_command (arg, from_tty) | |
4375 | char *arg; | |
4376 | int from_tty; | |
4377 | { | |
4378 | watch_command_1 (arg, 2, from_tty); | |
999dd04b JL |
4379 | } |
4380 | ||
bd5635a1 | 4381 | \f |
706dc3ce JL |
4382 | /* Helper routine for the until_command routine in infcmd.c. Here |
4383 | because it uses the mechanisms of breakpoints. */ | |
4384 | ||
bdbd5f50 | 4385 | /* ARGSUSED */ |
bd5635a1 RP |
4386 | void |
4387 | until_break_command (arg, from_tty) | |
4388 | char *arg; | |
4389 | int from_tty; | |
4390 | { | |
4391 | struct symtabs_and_lines sals; | |
4392 | struct symtab_and_line sal; | |
706dc3ce | 4393 | struct frame_info *prev_frame = get_prev_frame (selected_frame); |
30875e1c SG |
4394 | struct breakpoint *breakpoint; |
4395 | struct cleanup *old_chain; | |
bd5635a1 RP |
4396 | |
4397 | clear_proceed_status (); | |
4398 | ||
4399 | /* Set a breakpoint where the user wants it and at return from | |
4400 | this function */ | |
4401 | ||
4402 | if (default_breakpoint_valid) | |
4403 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 4404 | default_breakpoint_line, (char ***)NULL); |
bd5635a1 | 4405 | else |
d889f6b7 | 4406 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
4407 | |
4408 | if (sals.nelts != 1) | |
4409 | error ("Couldn't get information on specified line."); | |
4410 | ||
4411 | sal = sals.sals[0]; | |
c8950965 | 4412 | free ((PTR)sals.sals); /* malloc'd, so freed */ |
bd5635a1 RP |
4413 | |
4414 | if (*arg) | |
4415 | error ("Junk at end of arguments."); | |
4416 | ||
30875e1c | 4417 | resolve_sal_pc (&sal); |
bd5635a1 | 4418 | |
30875e1c | 4419 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
bd5635a1 | 4420 | |
ad3b8c4a | 4421 | old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
30875e1c | 4422 | |
bd5635a1 RP |
4423 | /* Keep within the current frame */ |
4424 | ||
4425 | if (prev_frame) | |
4426 | { | |
706dc3ce JL |
4427 | sal = find_pc_line (prev_frame->pc, 0); |
4428 | sal.pc = prev_frame->pc; | |
30875e1c | 4429 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); |
ad3b8c4a | 4430 | make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
bd5635a1 RP |
4431 | } |
4432 | ||
d7e7e851 | 4433 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
30875e1c | 4434 | do_cleanups(old_chain); |
bd5635a1 RP |
4435 | } |
4436 | \f | |
bdbd5f50 JG |
4437 | #if 0 |
4438 | /* These aren't used; I don't konw what they were for. */ | |
bd5635a1 RP |
4439 | /* Set a breakpoint at the catch clause for NAME. */ |
4440 | static int | |
4441 | catch_breakpoint (name) | |
4442 | char *name; | |
4443 | { | |
4444 | } | |
4445 | ||
4446 | static int | |
4447 | disable_catch_breakpoint () | |
4448 | { | |
4449 | } | |
4450 | ||
4451 | static int | |
4452 | delete_catch_breakpoint () | |
4453 | { | |
4454 | } | |
4455 | ||
4456 | static int | |
4457 | enable_catch_breakpoint () | |
4458 | { | |
4459 | } | |
bdbd5f50 | 4460 | #endif /* 0 */ |
bd5635a1 RP |
4461 | |
4462 | struct sal_chain | |
4463 | { | |
4464 | struct sal_chain *next; | |
4465 | struct symtab_and_line sal; | |
4466 | }; | |
4467 | ||
65b07ddc DT |
4468 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
4469 | had been commented out in the v.4.16 sources, and stays | |
4470 | disabled there now because "catch NAME" syntax isn't allowed. | |
4471 | pai/1997-07-11 */ | |
bdbd5f50 | 4472 | /* This isn't used; I don't know what it was for. */ |
bd5635a1 RP |
4473 | /* For each catch clause identified in ARGS, run FUNCTION |
4474 | with that clause as an argument. */ | |
4475 | static struct symtabs_and_lines | |
4476 | map_catch_names (args, function) | |
4477 | char *args; | |
4478 | int (*function)(); | |
4479 | { | |
4480 | register char *p = args; | |
4481 | register char *p1; | |
4482 | struct symtabs_and_lines sals; | |
bdbd5f50 | 4483 | #if 0 |
bd5635a1 | 4484 | struct sal_chain *sal_chain = 0; |
bdbd5f50 | 4485 | #endif |
bd5635a1 RP |
4486 | |
4487 | if (p == 0) | |
4488 | error_no_arg ("one or more catch names"); | |
4489 | ||
4490 | sals.nelts = 0; | |
4491 | sals.sals = NULL; | |
4492 | ||
4493 | while (*p) | |
4494 | { | |
4495 | p1 = p; | |
4496 | /* Don't swallow conditional part. */ | |
4497 | if (p1[0] == 'i' && p1[1] == 'f' | |
4498 | && (p1[2] == ' ' || p1[2] == '\t')) | |
4499 | break; | |
4500 | ||
4501 | if (isalpha (*p1)) | |
4502 | { | |
4503 | p1++; | |
4504 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
4505 | p1++; | |
4506 | } | |
4507 | ||
4508 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
4509 | error ("Arguments must be catch names."); | |
4510 | ||
4511 | *p1 = 0; | |
4512 | #if 0 | |
4513 | if (function (p)) | |
4514 | { | |
6b038bd9 DT |
4515 | struct sal_chain *next = (struct sal_chain *) |
4516 | alloca (sizeof (struct sal_chain)); | |
bd5635a1 RP |
4517 | next->next = sal_chain; |
4518 | next->sal = get_catch_sal (p); | |
4519 | sal_chain = next; | |
4520 | goto win; | |
4521 | } | |
4522 | #endif | |
199b2450 | 4523 | printf_unfiltered ("No catch clause for exception %s.\n", p); |
bdbd5f50 | 4524 | #if 0 |
bd5635a1 | 4525 | win: |
bdbd5f50 | 4526 | #endif |
bd5635a1 RP |
4527 | p = p1; |
4528 | while (*p == ' ' || *p == '\t') p++; | |
4529 | } | |
4530 | } | |
4531 | ||
4532 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
4533 | ||
4534 | static struct symtabs_and_lines | |
4535 | get_catch_sals (this_level_only) | |
4536 | int this_level_only; | |
4537 | { | |
bd5635a1 | 4538 | register struct blockvector *bl; |
777bef06 | 4539 | register struct block *block; |
bd5635a1 | 4540 | int index, have_default = 0; |
777bef06 | 4541 | CORE_ADDR pc; |
bd5635a1 RP |
4542 | struct symtabs_and_lines sals; |
4543 | struct sal_chain *sal_chain = 0; | |
4544 | char *blocks_searched; | |
4545 | ||
777bef06 JK |
4546 | /* Not sure whether an error message is always the correct response, |
4547 | but it's better than a core dump. */ | |
4548 | if (selected_frame == NULL) | |
4549 | error ("No selected frame."); | |
4550 | block = get_frame_block (selected_frame); | |
706dc3ce | 4551 | pc = selected_frame->pc; |
777bef06 | 4552 | |
bd5635a1 RP |
4553 | sals.nelts = 0; |
4554 | sals.sals = NULL; | |
4555 | ||
4556 | if (block == 0) | |
4557 | error ("No symbol table info available.\n"); | |
4558 | ||
4559 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
4560 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4ed3a9ea | 4561 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
4562 | |
4563 | while (block != 0) | |
4564 | { | |
4565 | CORE_ADDR end = BLOCK_END (block) - 4; | |
4566 | int last_index; | |
4567 | ||
4568 | if (bl != blockvector_for_pc (end, &index)) | |
4569 | error ("blockvector blotch"); | |
4570 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
4571 | error ("blockvector botch"); | |
4572 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
4573 | index += 1; | |
4574 | ||
4575 | /* Don't print out blocks that have gone by. */ | |
4576 | while (index < last_index | |
4577 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
4578 | index++; | |
4579 | ||
4580 | while (index < last_index | |
4581 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
4582 | { | |
4583 | if (blocks_searched[index] == 0) | |
4584 | { | |
4585 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
4586 | int nsyms; | |
4587 | register int i; | |
4588 | register struct symbol *sym; | |
4589 | ||
4590 | nsyms = BLOCK_NSYMS (b); | |
4591 | ||
4592 | for (i = 0; i < nsyms; i++) | |
4593 | { | |
4594 | sym = BLOCK_SYM (b, i); | |
2d313932 | 4595 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
4596 | { |
4597 | if (have_default) | |
4598 | continue; | |
4599 | have_default = 1; | |
4600 | } | |
4601 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
4602 | { | |
4603 | struct sal_chain *next = (struct sal_chain *) | |
4604 | alloca (sizeof (struct sal_chain)); | |
4605 | next->next = sal_chain; | |
4606 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
4607 | sal_chain = next; | |
4608 | } | |
4609 | } | |
4610 | blocks_searched[index] = 1; | |
4611 | } | |
4612 | index++; | |
4613 | } | |
4614 | if (have_default) | |
4615 | break; | |
4616 | if (sal_chain && this_level_only) | |
4617 | break; | |
4618 | ||
65b07ddc DT |
4619 | /* After handling the function's top-level block, stop. |
4620 | Don't continue to its superblock, the block of | |
4621 | per-file symbols. */ | |
4622 | if (BLOCK_FUNCTION (block)) | |
4623 | break; | |
4624 | block = BLOCK_SUPERBLOCK (block); | |
4625 | } | |
4626 | ||
4627 | if (sal_chain) | |
4628 | { | |
4629 | struct sal_chain *tmp_chain; | |
4630 | ||
4631 | /* Count the number of entries. */ | |
4632 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
4633 | tmp_chain = tmp_chain->next) | |
4634 | index++; | |
4635 | ||
4636 | sals.nelts = index; | |
4637 | sals.sals = (struct symtab_and_line *) | |
4638 | xmalloc (index * sizeof (struct symtab_and_line)); | |
4639 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
4640 | sals.sals[index] = sal_chain->sal; | |
4641 | } | |
4642 | ||
4643 | return sals; | |
4644 | } | |
4645 | ||
4646 | static void | |
4647 | ep_skip_leading_whitespace (s) | |
4648 | char ** s; | |
4649 | { | |
4650 | if ((s == NULL) || (*s == NULL)) | |
4651 | return; | |
4652 | while (isspace(**s)) | |
4653 | *s += 1; | |
4654 | } | |
4655 | ||
4656 | /* This function examines a string, and attempts to find a token | |
4657 | that might be an event name in the leading characters. If a | |
4658 | possible match is found, a pointer to the last character of | |
4659 | the token is returned. Else, NULL is returned. */ | |
4660 | static char * | |
4661 | ep_find_event_name_end (arg) | |
4662 | char * arg; | |
4663 | { | |
4664 | char * s = arg; | |
4665 | char * event_name_end = NULL; | |
4666 | ||
4667 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ | |
4668 | if (arg == NULL) | |
4669 | return NULL; | |
4670 | ||
4671 | /* We break out of the loop when we find a token delimiter. | |
4672 | Basically, we're looking for alphanumerics and underscores; | |
4673 | anything else delimites the token. */ | |
4674 | while (*s != '\0') | |
4675 | { | |
4676 | if (! isalnum(*s) && (*s != '_')) | |
4677 | break; | |
4678 | event_name_end = s; | |
4679 | s++; | |
4680 | } | |
4681 | ||
4682 | return event_name_end; | |
4683 | } | |
4684 | ||
4685 | ||
4686 | /* This function attempts to parse an optional "if <cond>" clause | |
4687 | from the arg string. If one is not found, it returns NULL. | |
4688 | ||
4689 | Else, it returns a pointer to the condition string. (It does not | |
4690 | attempt to evaluate the string against a particular block.) And, | |
4691 | it updates arg to point to the first character following the parsed | |
4692 | if clause in the arg string. */ | |
4693 | static char * | |
4694 | ep_parse_optional_if_clause (arg) | |
4695 | char ** arg; | |
4696 | { | |
4697 | char * cond_string; | |
4698 | ||
4699 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace((*arg)[2])) | |
4700 | return NULL; | |
4701 | ||
4702 | /* Skip the "if" keyword. */ | |
4703 | (*arg) += 2; | |
4704 | ||
4705 | /* Skip any extra leading whitespace, and record the start of the | |
4706 | condition string. */ | |
4707 | ep_skip_leading_whitespace (arg); | |
4708 | cond_string = *arg; | |
4709 | ||
4710 | /* Assume that the condition occupies the remainder of the arg string. */ | |
4711 | (*arg) += strlen (cond_string); | |
4712 | ||
4713 | return cond_string; | |
4714 | } | |
4715 | ||
4716 | /* This function attempts to parse an optional filename from the arg | |
4717 | string. If one is not found, it returns NULL. | |
4718 | ||
4719 | Else, it returns a pointer to the parsed filename. (This function | |
4720 | makes no attempt to verify that a file of that name exists, or is | |
4721 | accessible.) And, it updates arg to point to the first character | |
4722 | following the parsed filename in the arg string. | |
4723 | ||
4724 | Note that clients needing to preserve the returned filename for | |
4725 | future access should copy it to their own buffers. */ | |
4726 | static char * | |
4727 | ep_parse_optional_filename (arg) | |
4728 | char ** arg; | |
4729 | { | |
4730 | static char filename [1024]; | |
4731 | char * arg_p = *arg; | |
4732 | int i; | |
4733 | char c; | |
4734 | ||
4735 | if ((*arg_p == '\0') || isspace (*arg_p)) | |
4736 | return NULL; | |
4737 | ||
4738 | for (i=0; ; i++) | |
4739 | { | |
4740 | c = *arg_p; | |
4741 | if (isspace (c)) | |
4742 | c = '\0'; | |
4743 | filename[i] = c; | |
4744 | if (c == '\0') | |
4745 | break; | |
4746 | arg_p++; | |
4747 | } | |
4748 | *arg = arg_p; | |
4749 | ||
4750 | return filename; | |
4751 | } | |
4752 | ||
4753 | /* Commands to deal with catching events, such as signals, exceptions, | |
4754 | process start/exit, etc. */ | |
4755 | ||
4756 | typedef enum {catch_fork, catch_vfork} catch_fork_kind; | |
4757 | ||
4758 | static void | |
4759 | catch_fork_command_1 (fork_kind, arg, tempflag, from_tty) | |
4760 | catch_fork_kind fork_kind; | |
4761 | char * arg; | |
4762 | int tempflag; | |
4763 | int from_tty; | |
4764 | { | |
4765 | char * cond_string = NULL; | |
4766 | ||
4767 | ep_skip_leading_whitespace (&arg); | |
4768 | ||
4769 | /* The allowed syntax is: | |
4770 | catch [v]fork | |
4771 | catch [v]fork if <cond> | |
4772 | ||
4773 | First, check if there's an if clause. */ | |
4774 | cond_string = ep_parse_optional_if_clause (&arg); | |
4775 | ||
4776 | if ((*arg != '\0') && !isspace (*arg)) | |
4777 | error ("Junk at end of arguments."); | |
4778 | ||
4779 | /* If this target supports it, create a fork or vfork catchpoint | |
4780 | and enable reporting of such events. */ | |
4781 | switch (fork_kind) { | |
4782 | case catch_fork : | |
4783 | create_fork_event_catchpoint (tempflag, cond_string); | |
4784 | break; | |
4785 | case catch_vfork : | |
4786 | create_vfork_event_catchpoint (tempflag, cond_string); | |
4787 | break; | |
4788 | default : | |
4789 | error ("unsupported or unknown fork kind; cannot catch it"); | |
4790 | break; | |
4791 | } | |
4792 | } | |
4793 | ||
4794 | static void | |
4795 | catch_exec_command_1 (arg, tempflag, from_tty) | |
4796 | char * arg; | |
4797 | int tempflag; | |
4798 | int from_tty; | |
4799 | { | |
4800 | char * cond_string = NULL; | |
4801 | ||
4802 | ep_skip_leading_whitespace (&arg); | |
4803 | ||
4804 | /* The allowed syntax is: | |
4805 | catch exec | |
4806 | catch exec if <cond> | |
4807 | ||
4808 | First, check if there's an if clause. */ | |
4809 | cond_string = ep_parse_optional_if_clause (&arg); | |
4810 | ||
4811 | if ((*arg != '\0') && !isspace (*arg)) | |
4812 | error ("Junk at end of arguments."); | |
4813 | ||
4814 | /* If this target supports it, create an exec catchpoint | |
4815 | and enable reporting of such events. */ | |
4816 | create_exec_event_catchpoint (tempflag, cond_string); | |
4817 | } | |
4818 | ||
4819 | #if defined(SOLIB_ADD) | |
4820 | static void | |
4821 | catch_load_command_1 (arg, tempflag, from_tty) | |
4822 | char * arg; | |
4823 | int tempflag; | |
4824 | int from_tty; | |
4825 | { | |
4826 | char * dll_pathname = NULL; | |
4827 | char * cond_string = NULL; | |
4828 | ||
4829 | ep_skip_leading_whitespace (&arg); | |
4830 | ||
4831 | /* The allowed syntax is: | |
4832 | catch load | |
4833 | catch load if <cond> | |
4834 | catch load <filename> | |
4835 | catch load <filename> if <cond> | |
4836 | ||
4837 | The user is not allowed to specify the <filename> after an | |
4838 | if clause. | |
4839 | ||
4840 | We'll ignore the pathological case of a file named "if". | |
4841 | ||
4842 | First, check if there's an if clause. If so, then there | |
4843 | cannot be a filename. */ | |
4844 | cond_string = ep_parse_optional_if_clause (&arg); | |
4845 | ||
4846 | /* If there was an if clause, then there cannot be a filename. | |
4847 | Else, there might be a filename and an if clause. */ | |
4848 | if (cond_string == NULL) | |
4849 | { | |
4850 | dll_pathname = ep_parse_optional_filename (&arg); | |
4851 | ep_skip_leading_whitespace (&arg); | |
4852 | cond_string = ep_parse_optional_if_clause (&arg); | |
4853 | } | |
4854 | ||
4855 | if ((*arg != '\0') && !isspace (*arg)) | |
4856 | error ("Junk at end of arguments."); | |
4857 | ||
4858 | /* Create a load breakpoint that only triggers when a load of | |
4859 | the specified dll (or any dll, if no pathname was specified) | |
4860 | occurs. */ | |
4861 | SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, dll_pathname, cond_string); | |
4862 | } | |
4863 | ||
4864 | static void | |
4865 | catch_unload_command_1 (arg, tempflag, from_tty) | |
4866 | char * arg; | |
4867 | int tempflag; | |
4868 | int from_tty; | |
4869 | { | |
4870 | char * dll_pathname = NULL; | |
4871 | char * cond_string = NULL; | |
4872 | ||
4873 | ep_skip_leading_whitespace (&arg); | |
4874 | ||
4875 | /* The allowed syntax is: | |
4876 | catch unload | |
4877 | catch unload if <cond> | |
4878 | catch unload <filename> | |
4879 | catch unload <filename> if <cond> | |
4880 | ||
4881 | The user is not allowed to specify the <filename> after an | |
4882 | if clause. | |
4883 | ||
4884 | We'll ignore the pathological case of a file named "if". | |
4885 | ||
4886 | First, check if there's an if clause. If so, then there | |
4887 | cannot be a filename. */ | |
4888 | cond_string = ep_parse_optional_if_clause (&arg); | |
4889 | ||
4890 | /* If there was an if clause, then there cannot be a filename. | |
4891 | Else, there might be a filename and an if clause. */ | |
4892 | if (cond_string == NULL) | |
4893 | { | |
4894 | dll_pathname = ep_parse_optional_filename (&arg); | |
4895 | ep_skip_leading_whitespace (&arg); | |
4896 | cond_string = ep_parse_optional_if_clause (&arg); | |
bd5635a1 | 4897 | } |
65b07ddc DT |
4898 | |
4899 | if ((*arg != '\0') && !isspace (*arg)) | |
4900 | error ("Junk at end of arguments."); | |
4901 | ||
4902 | /* Create an unload breakpoint that only triggers when an unload of | |
4903 | the specified dll (or any dll, if no pathname was specified) | |
4904 | occurs. */ | |
4905 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, dll_pathname, cond_string); | |
4906 | } | |
4907 | #endif /* SOLIB_ADD */ | |
bd5635a1 | 4908 | |
65b07ddc DT |
4909 | /* Commands to deal with catching exceptions. */ |
4910 | ||
4911 | /* Set a breakpoint at the specified callback routine for an | |
4912 | exception event callback */ | |
4913 | ||
4914 | static void | |
4915 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal) | |
4916 | int tempflag; | |
4917 | char * cond_string; | |
4918 | enum exception_event_kind ex_event; | |
4919 | struct symtab_and_line * sal; | |
4920 | { | |
4921 | struct breakpoint * b; | |
4922 | int i; | |
4923 | int thread = -1; /* All threads. */ | |
4924 | ||
4925 | if (!sal) /* no exception support? */ | |
4926 | return; | |
4927 | ||
4928 | b = set_raw_breakpoint (*sal); | |
4929 | set_breakpoint_count (breakpoint_count + 1); | |
4930 | b->number = breakpoint_count; | |
4931 | b->cond = NULL; | |
4932 | b->cond_string = (cond_string == NULL) ? NULL : savestring (cond_string, strlen (cond_string)); | |
4933 | b->thread = thread; | |
4934 | b->addr_string = NULL; | |
4935 | b->enable = enabled; | |
4936 | b->disposition = tempflag ? del : donttouch; | |
4937 | switch (ex_event) | |
bd5635a1 | 4938 | { |
65b07ddc DT |
4939 | case EX_EVENT_THROW: |
4940 | b->type = bp_catch_throw; | |
4941 | break; | |
4942 | case EX_EVENT_CATCH: | |
4943 | b->type = bp_catch_catch; | |
4944 | break; | |
4945 | default: /* error condition */ | |
4946 | b->type = bp_none; | |
4947 | b->enable = disabled; | |
4948 | error ("Internal error -- invalid catchpoint kind"); | |
4949 | } | |
4950 | mention (b); | |
4951 | } | |
bd5635a1 | 4952 | |
65b07ddc | 4953 | /* Deal with "catch catch" and "catch throw" commands */ |
bd5635a1 | 4954 | |
65b07ddc DT |
4955 | static void |
4956 | catch_exception_command_1 (ex_event, arg, tempflag, from_tty) | |
4957 | enum exception_event_kind ex_event; | |
4958 | char * arg; | |
4959 | int tempflag; | |
4960 | int from_tty; | |
4961 | { | |
4962 | char * cond_string = NULL; | |
4963 | struct symtab_and_line * sal = NULL; | |
4964 | ||
4965 | ep_skip_leading_whitespace (&arg); | |
4966 | ||
4967 | cond_string = ep_parse_optional_if_clause (&arg); | |
4968 | ||
4969 | if ((*arg != '\0') && !isspace (*arg)) | |
4970 | error ("Junk at end of arguments."); | |
4971 | ||
4972 | if ((ex_event != EX_EVENT_THROW) && | |
4973 | (ex_event != EX_EVENT_CATCH)) | |
4974 | error ("Unsupported or unknown exception event; cannot catch it"); | |
4975 | ||
4976 | /* See if we can find a callback routine */ | |
4977 | sal = target_enable_exception_callback (ex_event, 1); | |
4978 | ||
4979 | if (sal) | |
4980 | { | |
4981 | /* We have callbacks from the runtime system for exceptions. | |
4982 | Set a breakpoint on the sal found, if no errors */ | |
4983 | if (sal != (struct symtab_and_line *) -1) | |
4984 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); | |
4985 | else | |
4986 | return; /* something went wrong with setting up callbacks */ | |
4987 | } | |
4988 | else | |
4989 | { | |
4990 | /* No callbacks from runtime system for exceptions. | |
4991 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
4992 | if (ex_event == EX_EVENT_CATCH) | |
4993 | { | |
4994 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
4995 | } | |
4996 | else if (ex_event == EX_EVENT_THROW) | |
4997 | { | |
4998 | /* Set a breakpoint on __raise_exception () */ | |
4999 | ||
5000 | fprintf_filtered (gdb_stderr, "Unsupported with this platform/compiler combination.\n"); | |
5001 | fprintf_filtered (gdb_stderr, "Perhaps you can achieve the effect you want by setting\n"); | |
5002 | fprintf_filtered (gdb_stderr, "a breakpoint on __raise_exception().\n"); | |
5003 | } | |
bd5635a1 | 5004 | } |
65b07ddc | 5005 | } |
bd5635a1 | 5006 | |
65b07ddc DT |
5007 | /* Cover routine to allow wrapping target_enable_exception_catchpoints |
5008 | inside a catch_errors */ | |
5009 | ||
6e45c399 AC |
5010 | static int |
5011 | cover_target_enable_exception_callback (arg) | |
5012 | PTR arg; | |
65b07ddc | 5013 | { |
6e45c399 AC |
5014 | args_for_catchpoint_enable *args = arg; |
5015 | struct symtab_and_line *sal; | |
5016 | sal = target_enable_exception_callback (args->kind, args->enable); | |
5017 | if (sal == NULL) | |
5018 | return 0; | |
5019 | else if (sal == (struct symtab_and_line *) -1) | |
5020 | return -1; | |
5021 | else | |
5022 | return 1; /*is valid*/ | |
bd5635a1 RP |
5023 | } |
5024 | ||
65b07ddc DT |
5025 | |
5026 | ||
5027 | /* This is the original v.4.16 and earlier version of the | |
5028 | catch_command_1() function. Now that other flavours of "catch" | |
5029 | have been introduced, and since exception handling can be handled | |
5030 | in other ways (through target ops) also, this is used only for the | |
5031 | GNU C++ exception handling system. | |
5032 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
5033 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
5034 | there was no code in GDB 4.16 for "catch throw". | |
5035 | ||
5036 | Called from catch_exception_command_1 () */ | |
5037 | ||
bd5635a1 | 5038 | |
30875e1c | 5039 | static void |
65b07ddc | 5040 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty) |
bd5635a1 RP |
5041 | char *arg; |
5042 | int tempflag; | |
5043 | int from_tty; | |
5044 | { | |
5045 | /* First, translate ARG into something we can deal with in terms | |
5046 | of breakpoints. */ | |
5047 | ||
5048 | struct symtabs_and_lines sals; | |
5049 | struct symtab_and_line sal; | |
5050 | register struct expression *cond = 0; | |
5051 | register struct breakpoint *b; | |
5052 | char *save_arg; | |
5053 | int i; | |
bd5635a1 | 5054 | |
6b038bd9 | 5055 | INIT_SAL (&sal); /* initialize to zeroes */ |
bd5635a1 RP |
5056 | |
5057 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
5058 | are breakpointed. */ | |
5059 | ||
5060 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
5061 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
5062 | { | |
5063 | /* Grab all active catch clauses. */ | |
5064 | sals = get_catch_sals (0); | |
5065 | } | |
5066 | else | |
5067 | { | |
5068 | /* Grab selected catch clauses. */ | |
fe675038 | 5069 | error ("catch NAME not implemented"); |
65b07ddc | 5070 | |
bdbd5f50 | 5071 | #if 0 |
65b07ddc DT |
5072 | /* Not sure why this code has been disabled. I'm leaving |
5073 | it disabled. We can never come here now anyway | |
5074 | since we don't allow the "catch NAME" syntax. | |
5075 | pai/1997-07-11 */ | |
5076 | ||
bdbd5f50 | 5077 | /* This isn't used; I don't know what it was for. */ |
bd5635a1 | 5078 | sals = map_catch_names (arg, catch_breakpoint); |
bdbd5f50 | 5079 | #endif |
bd5635a1 RP |
5080 | } |
5081 | ||
5082 | if (! sals.nelts) | |
5083 | return; | |
5084 | ||
5085 | save_arg = arg; | |
5086 | for (i = 0; i < sals.nelts; i++) | |
5087 | { | |
30875e1c | 5088 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
5089 | |
5090 | while (arg && *arg) | |
5091 | { | |
5092 | if (arg[0] == 'i' && arg[1] == 'f' | |
5093 | && (arg[2] == ' ' || arg[2] == '\t')) | |
30875e1c SG |
5094 | cond = parse_exp_1 ((arg += 2, &arg), |
5095 | block_for_pc (sals.sals[i].pc), 0); | |
bd5635a1 RP |
5096 | else |
5097 | error ("Junk at end of arguments."); | |
5098 | } | |
5099 | arg = save_arg; | |
bd5635a1 RP |
5100 | } |
5101 | ||
5102 | for (i = 0; i < sals.nelts; i++) | |
5103 | { | |
5104 | sal = sals.sals[i]; | |
5105 | ||
5106 | if (from_tty) | |
6b038bd9 | 5107 | describe_other_breakpoints (sal.pc, sal.section); |
bd5635a1 RP |
5108 | |
5109 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
5110 | set_breakpoint_count (breakpoint_count + 1); |
5111 | b->number = breakpoint_count; | |
65b07ddc DT |
5112 | b->type = bp_breakpoint; /* Important -- this is an ordinary breakpoint. |
5113 | For platforms with callback support for exceptions, | |
5114 | create_exception_catchpoint() will create special | |
5115 | bp types (bp_catch_catch and bp_catch_throw), and | |
5116 | there is code in insert_breakpoints() and elsewhere | |
5117 | that depends on that. */ | |
5118 | ||
bd5635a1 | 5119 | b->cond = cond; |
30875e1c | 5120 | b->enable = enabled; |
e8bf33c4 | 5121 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 | 5122 | |
d889f6b7 | 5123 | mention (b); |
bd5635a1 RP |
5124 | } |
5125 | ||
5126 | if (sals.nelts > 1) | |
5127 | { | |
199b2450 TL |
5128 | printf_unfiltered ("Multiple breakpoints were set.\n"); |
5129 | printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 5130 | } |
c8950965 | 5131 | free ((PTR)sals.sals); |
bd5635a1 RP |
5132 | } |
5133 | ||
65b07ddc DT |
5134 | #if 0 |
5135 | /* This creates a temporary internal breakpoint | |
5136 | just to placate infrun */ | |
5137 | static struct breakpoint * | |
5138 | create_temp_exception_breakpoint (pc) | |
5139 | CORE_ADDR pc; | |
5140 | { | |
5141 | struct symtab_and_line sal; | |
5142 | struct breakpoint *b; | |
5143 | ||
5144 | INIT_SAL(&sal); | |
5145 | sal.pc = pc; | |
5146 | sal.symtab = NULL; | |
5147 | sal.line = 0; | |
5148 | ||
5149 | b = set_raw_breakpoint (sal); | |
5150 | if (!b) | |
5151 | error ("Internal error -- couldn't set temp exception breakpoint"); | |
5152 | ||
5153 | b->type = bp_breakpoint; | |
5154 | b->disposition = del; | |
5155 | b->enable = enabled; | |
5156 | b->silent = 1; | |
5157 | b->number = internal_breakpoint_number--; | |
5158 | return b; | |
5159 | } | |
5160 | #endif | |
5161 | ||
5162 | static void | |
5163 | catch_command_1 (arg, tempflag, from_tty) | |
5164 | char *arg; | |
5165 | int tempflag; | |
5166 | int from_tty; | |
5167 | { | |
5168 | ||
5169 | /* The first argument may be an event name, such as "start" or "load". | |
5170 | If so, then handle it as such. If it doesn't match an event name, | |
5171 | then attempt to interpret it as an exception name. (This latter is | |
5172 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
5173 | ||
5174 | First, try to find the bounds of what might be an event name. */ | |
5175 | char * arg1_start = arg; | |
5176 | char * arg1_end; | |
5177 | int arg1_length; | |
5178 | ||
5179 | if (arg1_start == NULL) | |
5180 | { | |
5181 | /* Old behaviour was to use pre-v-4.16 syntax */ | |
5182 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ | |
5183 | /* return; */ | |
5184 | /* Now, this is not allowed */ | |
49082556 | 5185 | error ("Catch requires an event name."); |
65b07ddc DT |
5186 | |
5187 | } | |
5188 | arg1_end = ep_find_event_name_end (arg1_start); | |
5189 | if (arg1_end == NULL) | |
5190 | error ("catch requires an event"); | |
5191 | arg1_length = arg1_end + 1 - arg1_start; | |
5192 | ||
5193 | /* Try to match what we found against known event names. */ | |
5194 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
5195 | { | |
5196 | error ("Catch of signal not yet implemented"); | |
5197 | } | |
5198 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
5199 | { | |
5200 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end+1, tempflag, from_tty); | |
5201 | } | |
5202 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
5203 | { | |
5204 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end+1, tempflag, from_tty); | |
5205 | } | |
5206 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
5207 | { | |
5208 | error ("Catch of thread_start not yet implemented"); | |
5209 | } | |
5210 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
5211 | { | |
5212 | error ("Catch of thread_exit not yet implemented"); | |
5213 | } | |
5214 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
5215 | { | |
5216 | error ("Catch of thread_join not yet implemented"); | |
5217 | } | |
5218 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
5219 | { | |
5220 | error ("Catch of start not yet implemented"); | |
5221 | } | |
5222 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
5223 | { | |
5224 | error ("Catch of exit not yet implemented"); | |
5225 | } | |
5226 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
5227 | { | |
5228 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
5229 | catch_fork_command_1 (catch_fork, arg1_end+1, tempflag, from_tty); | |
5230 | #else | |
5231 | error ("Catch of fork not yet implemented"); | |
5232 | #endif | |
5233 | } | |
5234 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
5235 | { | |
5236 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
5237 | catch_fork_command_1 (catch_vfork, arg1_end+1, tempflag, from_tty); | |
5238 | #else | |
5239 | error ("Catch of vfork not yet implemented"); | |
5240 | #endif | |
5241 | } | |
5242 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
5243 | { | |
5244 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
5245 | catch_exec_command_1 (arg1_end+1, tempflag, from_tty); | |
5246 | #else | |
5247 | error ("Catch of exec not yet implemented"); | |
5248 | #endif | |
5249 | } | |
5250 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
5251 | { | |
5252 | #if defined(SOLIB_ADD) | |
5253 | catch_load_command_1 (arg1_end+1, tempflag, from_tty); | |
5254 | #else | |
5255 | error ("Catch of load not implemented"); | |
5256 | #endif | |
5257 | } | |
5258 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
5259 | { | |
5260 | #if defined(SOLIB_ADD) | |
5261 | catch_unload_command_1 (arg1_end+1, tempflag, from_tty); | |
5262 | #else | |
5263 | error ("Catch of load not implemented"); | |
5264 | #endif | |
5265 | } | |
5266 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
5267 | { | |
5268 | error ("Catch of stop not yet implemented"); | |
5269 | } | |
5270 | ||
5271 | /* This doesn't appear to be an event name */ | |
5272 | ||
5273 | else | |
5274 | { | |
5275 | /* Pre-v.4.16 behaviour was to treat the argument | |
5276 | as the name of an exception */ | |
5277 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ | |
5278 | /* Now this is not allowed */ | |
5279 | error ("Unknown event kind specified for catch"); | |
5280 | ||
5281 | } | |
5282 | } | |
5283 | ||
e8bf33c4 JK |
5284 | /* Used by the gui, could be made a worker for other things. */ |
5285 | ||
5286 | struct breakpoint * | |
5287 | set_breakpoint_sal (sal) | |
6b038bd9 | 5288 | struct symtab_and_line sal; |
e8bf33c4 JK |
5289 | { |
5290 | struct breakpoint *b; | |
5291 | b = set_raw_breakpoint (sal); | |
5292 | set_breakpoint_count (breakpoint_count + 1); | |
5293 | b->number = breakpoint_count; | |
5294 | b->type = bp_breakpoint; | |
5295 | b->cond = 0; | |
5296 | b->thread = -1; | |
5297 | return b; | |
5298 | } | |
5299 | ||
bdbd5f50 JG |
5300 | #if 0 |
5301 | /* These aren't used; I don't know what they were for. */ | |
bd5635a1 RP |
5302 | /* Disable breakpoints on all catch clauses described in ARGS. */ |
5303 | static void | |
5304 | disable_catch (args) | |
5305 | char *args; | |
5306 | { | |
5307 | /* Map the disable command to catch clauses described in ARGS. */ | |
5308 | } | |
5309 | ||
5310 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
5311 | static void | |
5312 | enable_catch (args) | |
5313 | char *args; | |
5314 | { | |
5315 | /* Map the disable command to catch clauses described in ARGS. */ | |
5316 | } | |
5317 | ||
5318 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
5319 | static void | |
5320 | delete_catch (args) | |
5321 | char *args; | |
5322 | { | |
5323 | /* Map the delete command to catch clauses described in ARGS. */ | |
5324 | } | |
bdbd5f50 | 5325 | #endif /* 0 */ |
bd5635a1 RP |
5326 | |
5327 | static void | |
5328 | catch_command (arg, from_tty) | |
5329 | char *arg; | |
5330 | int from_tty; | |
5331 | { | |
5332 | catch_command_1 (arg, 0, from_tty); | |
5333 | } | |
5334 | \f | |
65b07ddc DT |
5335 | |
5336 | static void | |
5337 | tcatch_command (arg, from_tty) | |
5338 | char *arg; | |
5339 | int from_tty; | |
5340 | { | |
5341 | catch_command_1 (arg, 1, from_tty); | |
5342 | } | |
5343 | ||
5344 | ||
bd5635a1 RP |
5345 | static void |
5346 | clear_command (arg, from_tty) | |
5347 | char *arg; | |
5348 | int from_tty; | |
5349 | { | |
5350 | register struct breakpoint *b, *b1; | |
65b07ddc | 5351 | int default_match; |
bd5635a1 RP |
5352 | struct symtabs_and_lines sals; |
5353 | struct symtab_and_line sal; | |
5354 | register struct breakpoint *found; | |
5355 | int i; | |
5356 | ||
5357 | if (arg) | |
5358 | { | |
5359 | sals = decode_line_spec (arg, 1); | |
65b07ddc | 5360 | default_match = 0; |
bd5635a1 RP |
5361 | } |
5362 | else | |
5363 | { | |
6b038bd9 DT |
5364 | sals.sals = (struct symtab_and_line *) |
5365 | xmalloc (sizeof (struct symtab_and_line)); | |
5366 | INIT_SAL (&sal); /* initialize to zeroes */ | |
bd5635a1 RP |
5367 | sal.line = default_breakpoint_line; |
5368 | sal.symtab = default_breakpoint_symtab; | |
65b07ddc | 5369 | sal.pc = default_breakpoint_address; |
bd5635a1 RP |
5370 | if (sal.symtab == 0) |
5371 | error ("No source file specified."); | |
5372 | ||
5373 | sals.sals[0] = sal; | |
5374 | sals.nelts = 1; | |
65b07ddc DT |
5375 | |
5376 | default_match = 1; | |
bd5635a1 RP |
5377 | } |
5378 | ||
65b07ddc DT |
5379 | /* For each line spec given, delete bps which correspond |
5380 | to it. We do this in two loops: the first loop looks at | |
5381 | the initial bp(s) in the chain which should be deleted, | |
5382 | the second goes down the rest of the chain looking ahead | |
5383 | one so it can take those bps off the chain without messing | |
5384 | up the chain. */ | |
5385 | ||
5386 | ||
bd5635a1 RP |
5387 | for (i = 0; i < sals.nelts; i++) |
5388 | { | |
5389 | /* If exact pc given, clear bpts at that pc. | |
65b07ddc DT |
5390 | If line given (pc == 0), clear all bpts on specified line. |
5391 | If defaulting, clear all bpts on default line | |
5392 | or at default pc. | |
5393 | ||
5394 | defaulting sal.pc != 0 tests to do | |
5395 | ||
5396 | 0 1 pc | |
5397 | 1 1 pc _and_ line | |
5398 | 0 0 line | |
5399 | 1 0 <can't happen> */ | |
5400 | ||
bd5635a1 RP |
5401 | sal = sals.sals[i]; |
5402 | found = (struct breakpoint *) 0; | |
6b038bd9 | 5403 | |
65b07ddc | 5404 | |
bd5635a1 | 5405 | while (breakpoint_chain |
65b07ddc DT |
5406 | /* Why don't we check here that this is not |
5407 | a watchpoint, etc., as we do below? | |
5408 | I can't make it fail, but don't know | |
5409 | what's stopping the failure: a watchpoint | |
5410 | of the same address as "sal.pc" should | |
5411 | wind up being deleted. */ | |
5412 | ||
5413 | && ( ((sal.pc && (breakpoint_chain->address == sal.pc)) && | |
5414 | (overlay_debugging == 0 || | |
5415 | breakpoint_chain->section == sal.section)) | |
5416 | || ((default_match || (0 == sal.pc)) | |
5417 | && breakpoint_chain->source_file != NULL | |
5418 | && sal.symtab != NULL | |
5419 | && STREQ (breakpoint_chain->source_file, sal.symtab->filename) | |
5420 | && breakpoint_chain->line_number == sal.line))) | |
5421 | ||
bd5635a1 RP |
5422 | { |
5423 | b1 = breakpoint_chain; | |
5424 | breakpoint_chain = b1->next; | |
5425 | b1->next = found; | |
5426 | found = b1; | |
5427 | } | |
5428 | ||
5429 | ALL_BREAKPOINTS (b) | |
65b07ddc DT |
5430 | |
5431 | while (b->next | |
5432 | && b->next->type != bp_none | |
5433 | && b->next->type != bp_watchpoint | |
5434 | && b->next->type != bp_hardware_watchpoint | |
5435 | && b->next->type != bp_read_watchpoint | |
5436 | && b->next->type != bp_access_watchpoint | |
5437 | && ( ((sal.pc && (b->next->address == sal.pc)) && | |
5438 | (overlay_debugging == 0 || | |
5439 | b->next->section == sal.section)) | |
5440 | || ((default_match || (0 == sal.pc)) | |
5441 | && b->next->source_file != NULL | |
5442 | && sal.symtab != NULL | |
5443 | && STREQ (b->next->source_file, sal.symtab->filename) | |
5444 | && b->next->line_number == sal.line))) | |
5445 | ||
5446 | ||
bd5635a1 RP |
5447 | { |
5448 | b1 = b->next; | |
5449 | b->next = b1->next; | |
5450 | b1->next = found; | |
5451 | found = b1; | |
5452 | } | |
5453 | ||
5454 | if (found == 0) | |
5455 | { | |
5456 | if (arg) | |
5457 | error ("No breakpoint at %s.", arg); | |
5458 | else | |
5459 | error ("No breakpoint at this line."); | |
5460 | } | |
5461 | ||
5462 | if (found->next) from_tty = 1; /* Always report if deleted more than one */ | |
199b2450 | 5463 | if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); |
6c803036 | 5464 | breakpoints_changed (); |
bd5635a1 RP |
5465 | while (found) |
5466 | { | |
199b2450 | 5467 | if (from_tty) printf_unfiltered ("%d ", found->number); |
bd5635a1 RP |
5468 | b1 = found->next; |
5469 | delete_breakpoint (found); | |
5470 | found = b1; | |
5471 | } | |
199b2450 | 5472 | if (from_tty) putchar_unfiltered ('\n'); |
bd5635a1 | 5473 | } |
c8950965 | 5474 | free ((PTR)sals.sals); |
bd5635a1 RP |
5475 | } |
5476 | \f | |
e51481f9 JL |
5477 | /* Delete breakpoint in BS if they are `delete' breakpoints and |
5478 | all breakpoints that are marked for deletion, whether hit or not. | |
bd5635a1 RP |
5479 | This is called after any breakpoint is hit, or after errors. */ |
5480 | ||
5481 | void | |
5482 | breakpoint_auto_delete (bs) | |
5483 | bpstat bs; | |
5484 | { | |
e51481f9 JL |
5485 | struct breakpoint *b, *temp; |
5486 | ||
bd5635a1 | 5487 | for (; bs; bs = bs->next) |
e8bf33c4 | 5488 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
cef4c2e7 | 5489 | && bs->stop) |
bd5635a1 | 5490 | delete_breakpoint (bs->breakpoint_at); |
e51481f9 JL |
5491 | |
5492 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5493 | { | |
5494 | if (b->disposition == del_at_next_stop) | |
5495 | delete_breakpoint (b); | |
5496 | } | |
bd5635a1 RP |
5497 | } |
5498 | ||
5499 | /* Delete a breakpoint and clean up all traces of it in the data structures. */ | |
5500 | ||
30875e1c | 5501 | void |
bd5635a1 RP |
5502 | delete_breakpoint (bpt) |
5503 | struct breakpoint *bpt; | |
5504 | { | |
5505 | register struct breakpoint *b; | |
5506 | register bpstat bs; | |
5507 | ||
65b07ddc DT |
5508 | if (bpt == NULL) |
5509 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
5510 | ||
5511 | ||
5512 | /* Has this bp already been deleted? This can happen because multiple | |
5513 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
5514 | ||
5515 | One example of this happening is a watchpoint's scope bp. When the | |
5516 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
5517 | delete it. We also delete its scope bp. But the scope bp is marked | |
5518 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
5519 | checked for auto-deleting bp's, which are deleted. | |
5520 | ||
5521 | A real solution to this problem might involve reference counts in bp's, | |
5522 | and/or giving them pointers back to their referencing bpstat's, and | |
5523 | teaching delete_breakpoint to only free a bp's storage when no more | |
5524 | references were extent. A cheaper bandaid was chosen. */ | |
5525 | if (bpt->type == bp_none) | |
5526 | return; | |
5527 | ||
754e5da2 SG |
5528 | if (delete_breakpoint_hook) |
5529 | delete_breakpoint_hook (bpt); | |
5530 | ||
bd5635a1 | 5531 | if (bpt->inserted) |
65b07ddc | 5532 | remove_breakpoint (bpt, mark_uninserted); |
999dd04b | 5533 | |
bd5635a1 RP |
5534 | if (breakpoint_chain == bpt) |
5535 | breakpoint_chain = bpt->next; | |
5536 | ||
65b07ddc DT |
5537 | /* If we have callback-style exception catchpoints, don't go through |
5538 | the adjustments to the C++ runtime library etc. if the inferior | |
5539 | isn't actually running. target_enable_exception_callback for a | |
5540 | null target ops vector gives an undesirable error message, so we | |
5541 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
5542 | exceptions are supported in this way, it's OK for now. FIXME */ | |
5543 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) | |
5544 | { | |
5545 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
5546 | static char message[sizeof (message1) + 30]; | |
5547 | args_for_catchpoint_enable args; | |
5548 | ||
5549 | sprintf (message, message1, bpt->number); /* Format possible error msg */ | |
5550 | args.kind = bpt->type == bp_catch_catch ? EX_EVENT_CATCH : EX_EVENT_THROW; | |
5551 | args.enable = 0; | |
6e45c399 AC |
5552 | catch_errors (cover_target_enable_exception_callback, &args, |
5553 | message, RETURN_MASK_ALL); | |
65b07ddc DT |
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) |
6e45c399 | 5706 | PTR 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 */ |
6e45c399 | 5891 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
bd5635a1 | 5892 | } |
706dc3ce JL |
5893 | set_language (save_language); |
5894 | input_radix = save_input_radix; | |
bd5635a1 | 5895 | |
cd10c7e3 SG |
5896 | #ifdef GET_LONGJMP_TARGET |
5897 | create_longjmp_breakpoint ("longjmp"); | |
5898 | create_longjmp_breakpoint ("_longjmp"); | |
5899 | create_longjmp_breakpoint ("siglongjmp"); | |
6b038bd9 | 5900 | create_longjmp_breakpoint ("_siglongjmp"); |
cd10c7e3 SG |
5901 | create_longjmp_breakpoint (NULL); |
5902 | #endif | |
80ba48f5 | 5903 | |
1eeba686 | 5904 | #if 0 |
0fe1522a | 5905 | /* Took this out (temporarily at least), since it produces an extra |
1eeba686 | 5906 | blank line at startup. This messes up the gdbtests. -PB */ |
bd5635a1 RP |
5907 | /* Blank line to finish off all those mention() messages we just printed. */ |
5908 | printf_filtered ("\n"); | |
1eeba686 | 5909 | #endif |
bd5635a1 RP |
5910 | } |
5911 | \f | |
5912 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
5913 | If from_tty is nonzero, it prints a message to that effect, | |
5914 | which ends with a period (no newline). */ | |
5915 | ||
65b07ddc DT |
5916 | /* Reset the thread number of this breakpoint: |
5917 | ||
5918 | - If the breakpoint is for all threads, leave it as-is. | |
5919 | - Else, reset it to the current thread for inferior_pid. */ | |
5920 | void | |
5921 | breakpoint_re_set_thread (b) | |
5922 | struct breakpoint * b; | |
5923 | { | |
5924 | if (b->thread != -1) | |
5925 | { | |
5926 | if (in_thread_list (inferior_pid)) | |
5927 | b->thread = pid_to_thread_id (inferior_pid); | |
5928 | } | |
5929 | } | |
5930 | ||
bd5635a1 RP |
5931 | void |
5932 | set_ignore_count (bptnum, count, from_tty) | |
5933 | int bptnum, count, from_tty; | |
5934 | { | |
5935 | register struct breakpoint *b; | |
5936 | ||
5937 | if (count < 0) | |
5938 | count = 0; | |
5939 | ||
5940 | ALL_BREAKPOINTS (b) | |
5941 | if (b->number == bptnum) | |
5942 | { | |
5943 | b->ignore_count = count; | |
5944 | if (!from_tty) | |
5945 | return; | |
5946 | else if (count == 0) | |
423e9664 SG |
5947 | printf_filtered ("Will stop next time breakpoint %d is reached.", |
5948 | bptnum); | |
bd5635a1 | 5949 | else if (count == 1) |
423e9664 SG |
5950 | printf_filtered ("Will ignore next crossing of breakpoint %d.", |
5951 | bptnum); | |
bd5635a1 | 5952 | else |
423e9664 | 5953 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", |
bd5635a1 | 5954 | count, bptnum); |
6c803036 | 5955 | breakpoints_changed (); |
bd5635a1 RP |
5956 | return; |
5957 | } | |
5958 | ||
5959 | error ("No breakpoint number %d.", bptnum); | |
5960 | } | |
5961 | ||
5962 | /* Clear the ignore counts of all breakpoints. */ | |
5963 | void | |
5964 | breakpoint_clear_ignore_counts () | |
5965 | { | |
5966 | struct breakpoint *b; | |
5967 | ||
5968 | ALL_BREAKPOINTS (b) | |
5969 | b->ignore_count = 0; | |
5970 | } | |
5971 | ||
5972 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
5973 | ||
5974 | static void | |
5975 | ignore_command (args, from_tty) | |
5976 | char *args; | |
5977 | int from_tty; | |
5978 | { | |
5979 | char *p = args; | |
5980 | register int num; | |
5981 | ||
5982 | if (p == 0) | |
5983 | error_no_arg ("a breakpoint number"); | |
5984 | ||
5985 | num = get_number (&p); | |
5986 | ||
5987 | if (*p == 0) | |
5988 | error ("Second argument (specified ignore-count) is missing."); | |
5989 | ||
bdbd5f50 JG |
5990 | set_ignore_count (num, |
5991 | longest_to_int (value_as_long (parse_and_eval (p))), | |
5992 | from_tty); | |
423e9664 | 5993 | printf_filtered ("\n"); |
6c803036 | 5994 | breakpoints_changed (); |
bd5635a1 RP |
5995 | } |
5996 | \f | |
5997 | /* Call FUNCTION on each of the breakpoints | |
5998 | whose numbers are given in ARGS. */ | |
5999 | ||
6000 | static void | |
6001 | map_breakpoint_numbers (args, function) | |
6002 | char *args; | |
30875e1c | 6003 | void (*function) PARAMS ((struct breakpoint *)); |
bd5635a1 RP |
6004 | { |
6005 | register char *p = args; | |
6006 | char *p1; | |
6007 | register int num; | |
6008 | register struct breakpoint *b; | |
6009 | ||
6010 | if (p == 0) | |
6011 | error_no_arg ("one or more breakpoint numbers"); | |
6012 | ||
6013 | while (*p) | |
6014 | { | |
6015 | p1 = p; | |
6016 | ||
6017 | num = get_number (&p1); | |
6018 | ||
6019 | ALL_BREAKPOINTS (b) | |
6020 | if (b->number == num) | |
6021 | { | |
999dd04b | 6022 | struct breakpoint *related_breakpoint = b->related_breakpoint; |
bd5635a1 | 6023 | function (b); |
999dd04b JL |
6024 | if (related_breakpoint) |
6025 | function (related_breakpoint); | |
bd5635a1 RP |
6026 | goto win; |
6027 | } | |
199b2450 | 6028 | printf_unfiltered ("No breakpoint number %d.\n", num); |
bd5635a1 RP |
6029 | win: |
6030 | p = p1; | |
6031 | } | |
6032 | } | |
6033 | ||
e8bf33c4 | 6034 | void |
bd5635a1 RP |
6035 | disable_breakpoint (bpt) |
6036 | struct breakpoint *bpt; | |
6037 | { | |
999dd04b JL |
6038 | /* Never disable a watchpoint scope breakpoint; we want to |
6039 | hit them when we leave scope so we can delete both the | |
6040 | watchpoint and its scope breakpoint at that time. */ | |
6041 | if (bpt->type == bp_watchpoint_scope) | |
6042 | return; | |
6043 | ||
bd5635a1 RP |
6044 | bpt->enable = disabled; |
6045 | ||
6b038bd9 | 6046 | check_duplicates (bpt->address, bpt->section); |
e8bf33c4 JK |
6047 | |
6048 | if (modify_breakpoint_hook) | |
6049 | modify_breakpoint_hook (bpt); | |
bd5635a1 RP |
6050 | } |
6051 | ||
bdbd5f50 | 6052 | /* ARGSUSED */ |
bd5635a1 RP |
6053 | static void |
6054 | disable_command (args, from_tty) | |
6055 | char *args; | |
6056 | int from_tty; | |
6057 | { | |
6058 | register struct breakpoint *bpt; | |
6059 | if (args == 0) | |
6060 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
6061 | switch (bpt->type) |
6062 | { | |
65b07ddc DT |
6063 | case bp_none: |
6064 | warning ("attempted to disable apparently deleted breakpoint #%d?\n", bpt->number); | |
6065 | continue; | |
423e9664 | 6066 | case bp_breakpoint: |
65b07ddc DT |
6067 | case bp_catch_load: |
6068 | case bp_catch_unload: | |
6069 | case bp_catch_fork: | |
6070 | case bp_catch_vfork: | |
6071 | case bp_catch_exec: | |
6072 | case bp_catch_catch: | |
6073 | case bp_catch_throw: | |
11054881 KH |
6074 | case bp_hardware_breakpoint: |
6075 | case bp_watchpoint: | |
6076 | case bp_hardware_watchpoint: | |
6077 | case bp_read_watchpoint: | |
6078 | case bp_access_watchpoint: | |
423e9664 SG |
6079 | disable_breakpoint (bpt); |
6080 | default: | |
6081 | continue; | |
6082 | } | |
bd5635a1 RP |
6083 | else |
6084 | map_breakpoint_numbers (args, disable_breakpoint); | |
6085 | } | |
6086 | ||
6087 | static void | |
3f37b696 | 6088 | do_enable_breakpoint (bpt, disposition) |
bd5635a1 | 6089 | struct breakpoint *bpt; |
3f37b696 | 6090 | enum bpdisp disposition; |
bd5635a1 | 6091 | { |
706dc3ce | 6092 | struct frame_info *save_selected_frame = NULL; |
11054881 KH |
6093 | int save_selected_frame_level = -1; |
6094 | int target_resources_ok, other_type_used; | |
6095 | struct value *mark; | |
6096 | ||
3f37b696 FF |
6097 | if (bpt->type == bp_hardware_breakpoint) |
6098 | { | |
11054881 KH |
6099 | int i; |
6100 | i = hw_breakpoint_used_count(); | |
6101 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
6102 | bp_hardware_breakpoint, i+1, 0); | |
6103 | if (target_resources_ok == 0) | |
6104 | error ("No hardware breakpoint support in the target."); | |
6105 | else if (target_resources_ok < 0) | |
6106 | error ("Hardware breakpoints used exceeds limit."); | |
6107 | } | |
6108 | ||
30875e1c | 6109 | bpt->enable = enabled; |
3f37b696 | 6110 | bpt->disposition = disposition; |
6b038bd9 | 6111 | check_duplicates (bpt->address, bpt->section); |
6c803036 | 6112 | breakpoints_changed (); |
11054881 KH |
6113 | |
6114 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
6115 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
6116 | { | |
6117 | if (bpt->exp_valid_block != NULL) | |
6118 | { | |
706dc3ce | 6119 | struct frame_info *fr = |
65b07ddc DT |
6120 | |
6121 | /* Ensure that we have the current frame. Else, this | |
6122 | next query may pessimistically be answered as, "No, | |
6123 | not within current scope". */ | |
6124 | get_current_frame (); | |
6125 | fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
11054881 KH |
6126 | if (fr == NULL) |
6127 | { | |
6128 | printf_filtered ("\ | |
6129 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
6130 | is valid is not currently in scope.\n", bpt->number); | |
6131 | bpt->enable = disabled; | |
6132 | return; | |
6133 | } | |
6134 | ||
6135 | save_selected_frame = selected_frame; | |
6136 | save_selected_frame_level = selected_frame_level; | |
6137 | select_frame (fr, -1); | |
6138 | } | |
6139 | ||
6140 | value_free (bpt->val); | |
6141 | mark = value_mark (); | |
6142 | bpt->val = evaluate_expression (bpt->exp); | |
6143 | release_value (bpt->val); | |
6144 | if (VALUE_LAZY (bpt->val)) | |
6145 | value_fetch_lazy (bpt->val); | |
6146 | ||
6147 | if (bpt->type == bp_hardware_watchpoint || | |
6148 | bpt->type == bp_read_watchpoint || | |
6149 | bpt->type == bp_access_watchpoint) | |
6150 | { | |
6151 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3f37b696 FF |
6152 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); |
6153 | ||
ad3b8c4a JM |
6154 | /* Hack around 'unused var' error for some targets here */ |
6155 | (void) mem_cnt, i; | |
11054881 | 6156 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( |
3f37b696 | 6157 | bpt->type, i + mem_cnt, other_type_used); |
11054881 KH |
6158 | /* we can consider of type is bp_hardware_watchpoint, convert to |
6159 | bp_watchpoint in the following condition */ | |
6160 | if (target_resources_ok < 0) | |
6161 | { | |
6162 | printf_filtered("\ | |
6163 | Cannot enable watchpoint %d because target watch resources\n\ | |
6164 | have been allocated for other watchpoints.\n", bpt->number); | |
3f37b696 FF |
6165 | bpt->enable = disabled; |
6166 | value_free_to_mark (mark); | |
6167 | return; | |
11054881 KH |
6168 | } |
6169 | } | |
6170 | ||
6171 | if (save_selected_frame_level >= 0) | |
65b07ddc | 6172 | select_and_print_frame (save_selected_frame, save_selected_frame_level); |
11054881 KH |
6173 | value_free_to_mark (mark); |
6174 | } | |
3f37b696 FF |
6175 | if (modify_breakpoint_hook) |
6176 | modify_breakpoint_hook (bpt); | |
6177 | } | |
6178 | ||
6179 | void | |
6180 | enable_breakpoint (bpt) | |
6181 | struct breakpoint *bpt; | |
6182 | { | |
895cc8ab | 6183 | do_enable_breakpoint (bpt, bpt->disposition); |
3f37b696 FF |
6184 | } |
6185 | ||
6186 | /* The enable command enables the specified breakpoints (or all defined | |
6187 | breakpoints) so they once again become (or continue to be) effective | |
6188 | in stopping the inferior. */ | |
6189 | ||
6190 | /* ARGSUSED */ | |
6191 | static void | |
6192 | enable_command (args, from_tty) | |
6193 | char *args; | |
6194 | int from_tty; | |
6195 | { | |
6196 | register struct breakpoint *bpt; | |
6197 | if (args == 0) | |
6198 | ALL_BREAKPOINTS (bpt) | |
6199 | switch (bpt->type) | |
6200 | { | |
65b07ddc DT |
6201 | case bp_none: |
6202 | warning ("attempted to enable apparently deleted breakpoint #%d?\n", bpt->number); | |
6203 | continue; | |
3f37b696 | 6204 | case bp_breakpoint: |
65b07ddc DT |
6205 | case bp_catch_load: |
6206 | case bp_catch_unload: | |
6207 | case bp_catch_fork: | |
6208 | case bp_catch_vfork: | |
6209 | case bp_catch_exec: | |
6210 | case bp_catch_catch: | |
6211 | case bp_catch_throw: | |
3f37b696 FF |
6212 | case bp_hardware_breakpoint: |
6213 | case bp_watchpoint: | |
6214 | case bp_hardware_watchpoint: | |
6215 | case bp_read_watchpoint: | |
6216 | case bp_access_watchpoint: | |
6217 | enable_breakpoint (bpt); | |
6218 | default: | |
6219 | continue; | |
6220 | } | |
6221 | else | |
6222 | map_breakpoint_numbers (args, enable_breakpoint); | |
6223 | } | |
6224 | ||
6225 | static void | |
6226 | enable_once_breakpoint (bpt) | |
6227 | struct breakpoint *bpt; | |
6228 | { | |
6229 | do_enable_breakpoint (bpt, disable); | |
bd5635a1 RP |
6230 | } |
6231 | ||
bdbd5f50 | 6232 | /* ARGSUSED */ |
bd5635a1 RP |
6233 | static void |
6234 | enable_once_command (args, from_tty) | |
6235 | char *args; | |
6236 | int from_tty; | |
6237 | { | |
6238 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
6239 | } | |
6240 | ||
6241 | static void | |
6242 | enable_delete_breakpoint (bpt) | |
6243 | struct breakpoint *bpt; | |
6244 | { | |
3f37b696 | 6245 | do_enable_breakpoint (bpt, del); |
bd5635a1 RP |
6246 | } |
6247 | ||
bdbd5f50 | 6248 | /* ARGSUSED */ |
bd5635a1 RP |
6249 | static void |
6250 | enable_delete_command (args, from_tty) | |
6251 | char *args; | |
6252 | int from_tty; | |
6253 | { | |
6254 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
6255 | } | |
6256 | \f | |
706dc3ce JL |
6257 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
6258 | ||
bd5635a1 RP |
6259 | struct symtabs_and_lines |
6260 | decode_line_spec_1 (string, funfirstline) | |
6261 | char *string; | |
6262 | int funfirstline; | |
6263 | { | |
6264 | struct symtabs_and_lines sals; | |
6265 | if (string == 0) | |
6266 | error ("Empty line specification."); | |
6267 | if (default_breakpoint_valid) | |
6268 | sals = decode_line_1 (&string, funfirstline, | |
d889f6b7 JK |
6269 | default_breakpoint_symtab, default_breakpoint_line, |
6270 | (char ***)NULL); | |
bd5635a1 | 6271 | else |
d889f6b7 JK |
6272 | sals = decode_line_1 (&string, funfirstline, |
6273 | (struct symtab *)NULL, 0, (char ***)NULL); | |
bd5635a1 RP |
6274 | if (*string) |
6275 | error ("Junk at end of line specification: %s", string); | |
6276 | return sals; | |
6277 | } | |
6278 | \f | |
bd5635a1 RP |
6279 | void |
6280 | _initialize_breakpoint () | |
6281 | { | |
65b07ddc DT |
6282 | struct cmd_list_element *c; |
6283 | ||
bd5635a1 RP |
6284 | breakpoint_chain = 0; |
6285 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
6286 | before a breakpoint is set. */ | |
6287 | breakpoint_count = 0; | |
6288 | ||
6289 | add_com ("ignore", class_breakpoint, ignore_command, | |
557f3a0e SS |
6290 | "Set ignore-count of breakpoint number N to COUNT.\n\ |
6291 | Usage is `ignore N COUNT'."); | |
65b07ddc DT |
6292 | if (xdb_commands) |
6293 | add_com_alias("bc", "ignore", class_breakpoint, 1); | |
bd5635a1 RP |
6294 | |
6295 | add_com ("commands", class_breakpoint, commands_command, | |
6296 | "Set commands to be executed when a breakpoint is hit.\n\ | |
6297 | Give breakpoint number as argument after \"commands\".\n\ | |
6298 | With no argument, the targeted breakpoint is the last one set.\n\ | |
6299 | The commands themselves follow starting on the next line.\n\ | |
6300 | Type a line containing \"end\" to indicate the end of them.\n\ | |
6301 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
6302 | then no output is printed when it is hit, except what the commands print."); | |
6303 | ||
6304 | add_com ("condition", class_breakpoint, condition_command, | |
6305 | "Specify breakpoint number N to break only if COND is true.\n\ | |
557f3a0e SS |
6306 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
6307 | expression to be evaluated whenever breakpoint N is reached. "); | |
bd5635a1 RP |
6308 | |
6309 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
6310 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c4de6b30 JK |
6311 | Like \"break\" except the breakpoint is only temporary,\n\ |
6312 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
6313 | by using \"enable delete\" on the breakpoint number."); | |
65b07ddc DT |
6314 | add_com("txbreak", class_breakpoint, tbreak_at_finish_command, |
6315 | "Set temporary breakpoint at procedure exit. Either there should\n\ | |
6316 | be no argument or the argument must be a depth.\n"); | |
bd5635a1 | 6317 | |
11054881 KH |
6318 | add_com ("hbreak", class_breakpoint, hbreak_command, |
6319 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
6320 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
6321 | some target hardware may not have this support."); | |
6322 | ||
6323 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
6324 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
6325 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
6326 | so it will be deleted when hit."); | |
6327 | ||
bd5635a1 RP |
6328 | add_prefix_cmd ("enable", class_breakpoint, enable_command, |
6329 | "Enable some breakpoints.\n\ | |
6330 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
6331 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
6332 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6333 | With a subcommand you can enable temporarily.", | |
6334 | &enablelist, "enable ", 1, &cmdlist); | |
65b07ddc DT |
6335 | if (xdb_commands) |
6336 | add_com("ab", class_breakpoint, enable_command, | |
6337 | "Enable some breakpoints.\n\ | |
6338 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
6339 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
6340 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6341 | With a subcommand you can enable temporarily."); | |
bd5635a1 | 6342 | |
895cc8ab KS |
6343 | add_com_alias ("en", "enable", class_breakpoint, 1); |
6344 | ||
bd5635a1 RP |
6345 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, |
6346 | "Enable some breakpoints.\n\ | |
6347 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
6348 | This is used to cancel the effect of the \"disable\" command.\n\ | |
6349 | May be abbreviated to simply \"enable\".\n", | |
6350 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); | |
6351 | ||
6352 | add_cmd ("once", no_class, enable_once_command, | |
6353 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 6354 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
6355 | &enablebreaklist); |
6356 | ||
6357 | add_cmd ("delete", no_class, enable_delete_command, | |
6358 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
6359 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
6360 | &enablebreaklist); | |
6361 | ||
6362 | add_cmd ("delete", no_class, enable_delete_command, | |
6363 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
6364 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
6365 | &enablelist); | |
6366 | ||
6367 | add_cmd ("once", no_class, enable_once_command, | |
6368 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 6369 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
6370 | &enablelist); |
6371 | ||
6372 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
6373 | "Disable some breakpoints.\n\ | |
6374 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6375 | To disable all breakpoints, give no argument.\n\ | |
6376 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
6377 | &disablelist, "disable ", 1, &cmdlist); | |
6378 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
6379 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
65b07ddc DT |
6380 | if (xdb_commands) |
6381 | add_com("sb", class_breakpoint, disable_command, | |
6382 | "Disable some breakpoints.\n\ | |
6383 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6384 | To disable all breakpoints, give no argument.\n\ | |
6385 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
bd5635a1 RP |
6386 | |
6387 | add_cmd ("breakpoints", class_alias, disable_command, | |
6388 | "Disable some breakpoints.\n\ | |
6389 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6390 | To disable all breakpoints, give no argument.\n\ | |
6391 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
6392 | This command may be abbreviated \"disable\".", | |
6393 | &disablelist); | |
6394 | ||
6395 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
6396 | "Delete some breakpoints or auto-display expressions.\n\ | |
6397 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6398 | To delete all breakpoints, give no argument.\n\ | |
6399 | \n\ | |
6400 | Also a prefix command for deletion of other GDB objects.\n\ | |
6401 | The \"unset\" command is also an alias for \"delete\".", | |
6402 | &deletelist, "delete ", 1, &cmdlist); | |
6403 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
65b07ddc DT |
6404 | if (xdb_commands) |
6405 | add_com ("db", class_breakpoint, delete_command, | |
6406 | "Delete some breakpoints.\n\ | |
6407 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6408 | To delete all breakpoints, give no argument.\n"); | |
bd5635a1 RP |
6409 | |
6410 | add_cmd ("breakpoints", class_alias, delete_command, | |
6411 | "Delete some breakpoints or auto-display expressions.\n\ | |
6412 | Arguments are breakpoint numbers with spaces in between.\n\ | |
6413 | To delete all breakpoints, give no argument.\n\ | |
6414 | This command may be abbreviated \"delete\".", | |
6415 | &deletelist); | |
6416 | ||
6417 | add_com ("clear", class_breakpoint, clear_command, | |
706dc3ce | 6418 | concat ("Clear breakpoint at specified line or function.\n\ |
bd5635a1 RP |
6419 | Argument may be line number, function name, or \"*\" and an address.\n\ |
6420 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
6421 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
706dc3ce JL |
6422 | If an address is specified, breakpoints at that address are cleared.\n\n", |
6423 | "With no argument, clears all breakpoints in the line that the selected frame\n\ | |
bd5635a1 RP |
6424 | is executing in.\n\ |
6425 | \n\ | |
706dc3ce | 6426 | See also the \"delete\" command which clears breakpoints by number.", NULL)); |
bd5635a1 RP |
6427 | |
6428 | add_com ("break", class_breakpoint, break_command, | |
706dc3ce | 6429 | concat ("Set breakpoint at specified line or function.\n\ |
bd5635a1 RP |
6430 | Argument may be line number, function name, or \"*\" and an address.\n\ |
6431 | If line number is specified, break at start of code for that line.\n\ | |
6432 | If function is specified, break at start of code for that function.\n\ | |
706dc3ce JL |
6433 | If an address is specified, break at that exact address.\n", |
6434 | "With no arg, uses current execution address of selected stack frame.\n\ | |
bd5635a1 RP |
6435 | This is useful for breaking on return to a stack frame.\n\ |
6436 | \n\ | |
6437 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
6438 | \n\ | |
706dc3ce | 6439 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); |
bd5635a1 RP |
6440 | add_com_alias ("b", "break", class_run, 1); |
6441 | add_com_alias ("br", "break", class_run, 1); | |
6442 | add_com_alias ("bre", "break", class_run, 1); | |
6443 | add_com_alias ("brea", "break", class_run, 1); | |
6444 | ||
65b07ddc DT |
6445 | add_com("xbreak", class_breakpoint, break_at_finish_command, |
6446 | concat("Set breakpoint at procedure exit. \n\ | |
6447 | Argument may be function name, or \"*\" and an address.\n\ | |
6448 | If function is specified, break at end of code for that function.\n\ | |
6449 | If an address is specified, break at the end of the function that contains \n\ | |
6450 | that exact address.\n", | |
6451 | "With no arg, uses current execution address of selected stack frame.\n\ | |
6452 | This is useful for breaking on return to a stack frame.\n\ | |
6453 | \n\ | |
6454 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
6455 | \n\ | |
6456 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
6457 | add_com_alias ("xb", "xbreak", class_breakpoint, 1); | |
6458 | add_com_alias ("xbr", "xbreak", class_breakpoint, 1); | |
6459 | add_com_alias ("xbre", "xbreak", class_breakpoint, 1); | |
6460 | add_com_alias ("xbrea", "xbreak", class_breakpoint, 1); | |
6461 | ||
6462 | if (xdb_commands) | |
6463 | { | |
6464 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
6465 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
6466 | add_com ("bx", class_breakpoint, break_at_finish_at_depth_command, | |
6467 | "Set breakpoint at procedure exit. Either there should\n\ | |
6468 | be no argument or the argument must be a depth.\n"); | |
6469 | } | |
6470 | ||
6471 | if (dbx_commands) | |
6472 | { | |
6473 | add_abbrev_prefix_cmd("stop", class_breakpoint, stop_command, | |
6474 | "Break in function/address or break at a line in the current file.", | |
6475 | &stoplist, "stop ", 1, &cmdlist); | |
6476 | add_cmd("in", class_breakpoint, stopin_command, | |
6477 | "Break in function or address.\n", &stoplist); | |
6478 | add_cmd("at", class_breakpoint, stopat_command, | |
6479 | "Break at a line in the current file.\n", &stoplist); | |
6480 | add_com("status", class_info, breakpoints_info, | |
6481 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
6482 | The \"Type\" column indicates one of:\n\ | |
6483 | \tbreakpoint - normal breakpoint\n\ | |
6484 | \twatchpoint - watchpoint\n\ | |
6485 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
6486 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
6487 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
6488 | address and file/line number respectively.\n\n", | |
6489 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
6490 | are set to the address of the last breakpoint listed.\n\n\ | |
6491 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
6492 | breakpoint set.", NULL)); | |
6493 | } | |
6494 | ||
bd5635a1 | 6495 | add_info ("breakpoints", breakpoints_info, |
706dc3ce | 6496 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 6497 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
6498 | \tbreakpoint - normal breakpoint\n\ |
6499 | \twatchpoint - watchpoint\n\ | |
80ba48f5 SG |
6500 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
6501 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
6502 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
6503 | address and file/line number respectively.\n\n", |
6504 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
80ba48f5 SG |
6505 | are set to the address of the last breakpoint listed.\n\n\ |
6506 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
65b07ddc DT |
6507 | breakpoint set.", NULL)); |
6508 | ||
6509 | if (xdb_commands) | |
6510 | add_com("lb", class_breakpoint, breakpoints_info, | |
6511 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
6512 | The \"Type\" column indicates one of:\n\ | |
6513 | \tbreakpoint - normal breakpoint\n\ | |
6514 | \twatchpoint - watchpoint\n\ | |
6515 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
6516 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
6517 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
6518 | address and file/line number respectively.\n\n", | |
6519 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
6520 | are set to the address of the last breakpoint listed.\n\n\ | |
6521 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 6522 | breakpoint set.", NULL)); |
80ba48f5 | 6523 | |
9b280a7f JG |
6524 | #if MAINTENANCE_CMDS |
6525 | ||
6526 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, | |
706dc3ce | 6527 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 6528 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
6529 | \tbreakpoint - normal breakpoint\n\ |
6530 | \twatchpoint - watchpoint\n\ | |
6531 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
6532 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
6533 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
706dc3ce JL |
6534 | \tfinish - internal breakpoint used by the \"finish\" command\n", |
6535 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
80ba48f5 SG |
6536 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
6537 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
6538 | address and file/line number respectively.\n\n", |
6539 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
bd5635a1 RP |
6540 | are set to the address of the last breakpoint listed.\n\n\ |
6541 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 6542 | breakpoint set.", NULL), |
9b280a7f JG |
6543 | &maintenanceinfolist); |
6544 | ||
6545 | #endif /* MAINTENANCE_CMDS */ | |
bd5635a1 RP |
6546 | |
6547 | add_com ("catch", class_breakpoint, catch_command, | |
65b07ddc DT |
6548 | "Set catchpoints to catch events.\n\ |
6549 | Raised signals may be caught:\n\ | |
6550 | \tcatch signal - all signals\n\ | |
6551 | \tcatch signal <signame> - a particular signal\n\ | |
6552 | Raised exceptions may be caught:\n\ | |
6553 | \tcatch throw - all exceptions, when thrown\n\ | |
6554 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
6555 | \tcatch catch - all exceptions, when caught\n\ | |
6556 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
6557 | Thread or process events may be caught:\n\ | |
6558 | \tcatch thread_start - any threads, just after creation\n\ | |
6559 | \tcatch thread_exit - any threads, just before expiration\n\ | |
6560 | \tcatch thread_join - any threads, just after joins\n\ | |
6561 | Process events may be caught:\n\ | |
6562 | \tcatch start - any processes, just after creation\n\ | |
6563 | \tcatch exit - any processes, just before expiration\n\ | |
6564 | \tcatch fork - calls to fork()\n\ | |
6565 | \tcatch vfork - calls to vfork()\n\ | |
6566 | \tcatch exec - calls to exec()\n\ | |
6567 | Dynamically-linked library events may be caught:\n\ | |
6568 | \tcatch load - loads of any library\n\ | |
6569 | \tcatch load <libname> - loads of a particular library\n\ | |
6570 | \tcatch unload - unloads of any library\n\ | |
6571 | \tcatch unload <libname> - unloads of a particular library\n\ | |
6572 | The act of your program's execution stopping may also be caught:\n\ | |
6573 | \tcatch stop\n\n\ | |
6574 | C++ exceptions may be caught:\n\ | |
6575 | \tcatch throw - all exceptions, when thrown\n\ | |
6576 | \tcatch catch - all exceptions, when caught\n\ | |
bd5635a1 | 6577 | \n\ |
65b07ddc DT |
6578 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ |
6579 | after a fork or vfork is caught.\n\n\ | |
bd5635a1 | 6580 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); |
65b07ddc DT |
6581 | |
6582 | add_com ("tcatch", class_breakpoint, tcatch_command, | |
6583 | "Set temporary catchpoints to catch events.\n\ | |
6584 | Args like \"catch\" command.\n\ | |
6585 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
6586 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
6587 | by using \"enable delete\" on the catchpoint number."); | |
6588 | ||
6589 | add_com ("watch", class_breakpoint, watch_command, | |
bd5635a1 | 6590 | |
bd5635a1 RP |
6591 | "Set a watchpoint for an expression.\n\ |
6592 | A watchpoint stops execution of your program whenever the value of\n\ | |
6593 | an expression changes."); | |
6594 | ||
11054881 KH |
6595 | add_com ("rwatch", class_breakpoint, rwatch_command, |
6596 | "Set a read watchpoint for an expression.\n\ | |
6597 | A watchpoint stops execution of your program whenever the value of\n\ | |
6598 | an expression is read."); | |
6599 | ||
6600 | add_com ("awatch", class_breakpoint, awatch_command, | |
6601 | "Set a watchpoint for an expression.\n\ | |
6602 | A watchpoint stops execution of your program whenever the value of\n\ | |
6603 | an expression is either read or written."); | |
6604 | ||
c8950965 JG |
6605 | add_info ("watchpoints", breakpoints_info, |
6606 | "Synonym for ``info breakpoints''."); | |
9f577285 | 6607 | |
65b07ddc DT |
6608 | |
6609 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
6610 | (char *) &can_use_hw_watchpoints, | |
6611 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
6612 | If zero, gdb will not use hardware for new watchpoints, even if\n\ | |
6613 | such is available. (However, any hardware watchpoints that were\n\ | |
6614 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
6615 | hardware.)", | |
6616 | &setlist); | |
6617 | add_show_from_set (c, &showlist); | |
6618 | ||
6619 | can_use_hw_watchpoints = 1; | |
bd5635a1 | 6620 | } |