]>
Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
e74f0f02 DJ |
4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
5 | Free Software Foundation, Inc. | |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include <ctype.h> | |
26 | #include "symtab.h" | |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "expression.h" | |
31 | #include "gdbcore.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "value.h" | |
34 | #include "command.h" | |
35 | #include "inferior.h" | |
36 | #include "gdbthread.h" | |
37 | #include "target.h" | |
38 | #include "language.h" | |
39 | #include "gdb_string.h" | |
40 | #include "demangle.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
c906108c | 52 | |
104c1213 JM |
53 | #include "gdb-events.h" |
54 | ||
c906108c SS |
55 | /* Prototypes for local functions. */ |
56 | ||
c2c6d25f JM |
57 | static void until_break_command_continuation (struct continuation_arg *arg); |
58 | ||
a14ed312 | 59 | static void catch_command_1 (char *, int, int); |
c906108c | 60 | |
a14ed312 | 61 | static void enable_delete_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 64 | |
a14ed312 | 65 | static void enable_once_command (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 68 | |
a14ed312 | 69 | static void disable_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void enable_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 74 | |
a14ed312 | 75 | static void ignore_command (char *, int); |
c906108c | 76 | |
4efb68b1 | 77 | static int breakpoint_re_set_one (void *); |
c906108c | 78 | |
a14ed312 | 79 | static void clear_command (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void catch_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void watch_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 86 | |
e5d66720 PS |
87 | extern void break_at_finish_command (char *, int); |
88 | extern void break_at_finish_at_depth_command (char *, int); | |
7a292a7a | 89 | |
e5d66720 | 90 | extern void tbreak_at_finish_command (char *, int); |
7a292a7a | 91 | |
a14ed312 | 92 | static void break_command_1 (char *, int, int); |
c906108c | 93 | |
a14ed312 | 94 | static void mention (struct breakpoint *); |
c906108c | 95 | |
4d28f7a8 | 96 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 97 | |
9f60f21b | 98 | static void check_duplicates (struct breakpoint *); |
c906108c | 99 | |
76897487 KB |
100 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
101 | ||
102 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr); | |
103 | ||
a14ed312 | 104 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 105 | |
a14ed312 | 106 | static void breakpoints_info (char *, int); |
c906108c | 107 | |
a14ed312 | 108 | static void breakpoint_1 (int, int); |
c906108c | 109 | |
a14ed312 | 110 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 111 | |
4efb68b1 | 112 | static int breakpoint_cond_eval (void *); |
c906108c | 113 | |
4efb68b1 | 114 | static void cleanup_executing_breakpoints (void *); |
c906108c | 115 | |
a14ed312 | 116 | static void commands_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void condition_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static int get_number_trailer (char **, int); |
c906108c | 121 | |
a14ed312 | 122 | void set_breakpoint_count (int); |
c906108c | 123 | |
c5aa993b JM |
124 | typedef enum |
125 | { | |
126 | mark_inserted, | |
127 | mark_uninserted | |
128 | } | |
129 | insertion_state_t; | |
c906108c | 130 | |
0bde7532 | 131 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 132 | |
a14ed312 | 133 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
134 | |
135 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 136 | |
c5aa993b JM |
137 | typedef struct |
138 | { | |
139 | enum exception_event_kind kind; | |
b5de0fa7 | 140 | int enable_p; |
c5aa993b JM |
141 | } |
142 | args_for_catchpoint_enable; | |
c906108c | 143 | |
4efb68b1 | 144 | static int watchpoint_check (void *); |
c906108c | 145 | |
4efb68b1 | 146 | static int cover_target_enable_exception_callback (void *); |
c906108c | 147 | |
a14ed312 | 148 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 149 | |
a14ed312 | 150 | static void create_longjmp_breakpoint (char *); |
c906108c | 151 | |
1900040c MS |
152 | static void create_overlay_event_breakpoint (char *); |
153 | ||
a14ed312 | 154 | static int hw_breakpoint_used_count (void); |
c906108c | 155 | |
a14ed312 | 156 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 157 | |
a14ed312 | 158 | static void hbreak_command (char *, int); |
c906108c | 159 | |
a14ed312 | 160 | static void thbreak_command (char *, int); |
c906108c | 161 | |
a14ed312 | 162 | static void watch_command_1 (char *, int, int); |
c906108c | 163 | |
a14ed312 | 164 | static void rwatch_command (char *, int); |
c906108c | 165 | |
a14ed312 | 166 | static void awatch_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 169 | |
a14ed312 KB |
170 | static void solib_load_unload_1 (char *hookname, |
171 | int tempflag, | |
172 | char *dll_pathname, | |
173 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 174 | |
a14ed312 KB |
175 | static void create_fork_vfork_event_catchpoint (int tempflag, |
176 | char *cond_string, | |
177 | enum bptype bp_kind); | |
7a292a7a | 178 | |
a14ed312 KB |
179 | static void break_at_finish_at_depth_command_1 (char *arg, |
180 | int flag, int from_tty); | |
7a292a7a | 181 | |
a14ed312 | 182 | static void break_at_finish_command_1 (char *arg, int flag, int from_tty); |
7a292a7a | 183 | |
a14ed312 | 184 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 185 | |
a14ed312 | 186 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 187 | |
a14ed312 | 188 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 189 | |
a14ed312 | 190 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 191 | |
a14ed312 | 192 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 193 | |
a14ed312 | 194 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 195 | |
d85310f7 MS |
196 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
197 | enum exception_event_kind ex_event, | |
198 | struct symtab_and_line *sal); | |
7a292a7a | 199 | |
d85310f7 MS |
200 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
201 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 202 | |
a14ed312 | 203 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 204 | |
a14ed312 | 205 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 206 | |
c906108c SS |
207 | /* Prototypes for exported functions. */ |
208 | ||
c906108c SS |
209 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
210 | if such is available. */ | |
211 | static int can_use_hw_watchpoints; | |
212 | ||
a14ed312 | 213 | void _initialize_breakpoint (void); |
c906108c | 214 | |
c5aa993b | 215 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 216 | |
c906108c SS |
217 | /* Are we executing breakpoint commands? */ |
218 | static int executing_breakpoint_commands; | |
219 | ||
c02f5703 MS |
220 | /* Are overlay event breakpoints enabled? */ |
221 | static int overlay_events_enabled; | |
222 | ||
c906108c SS |
223 | /* Walk the following statement or block through all breakpoints. |
224 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
225 | breakpoint. */ | |
226 | ||
5c44784c | 227 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 228 | |
5c44784c JM |
229 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
230 | for (B = breakpoint_chain; \ | |
231 | B ? (TMP=B->next, 1): 0; \ | |
232 | B = TMP) | |
c906108c | 233 | |
7cc221ef DJ |
234 | /* Similar iterators for the low-level breakpoints. */ |
235 | ||
236 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
237 | ||
238 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
239 | for (B = bp_location_chain; \ | |
240 | B ? (TMP=B->next, 1): 0; \ | |
241 | B = TMP) | |
242 | ||
c906108c SS |
243 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
244 | ||
245 | int show_breakpoint_hit_counts = 1; | |
246 | ||
7cc221ef | 247 | /* Chains of all breakpoints defined. */ |
c906108c SS |
248 | |
249 | struct breakpoint *breakpoint_chain; | |
250 | ||
7cc221ef DJ |
251 | struct bp_location *bp_location_chain; |
252 | ||
c906108c SS |
253 | /* Number of last breakpoint made. */ |
254 | ||
255 | int breakpoint_count; | |
256 | ||
c5aa993b JM |
257 | /* Pointer to current exception event record */ |
258 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
259 | |
260 | /* Indicator of whether exception catchpoints should be nuked | |
261 | between runs of a program */ | |
262 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 263 | |
c906108c SS |
264 | /* Indicator of when exception catchpoints set-up should be |
265 | reinitialized -- e.g. when program is re-run */ | |
266 | int exception_support_initialized = 0; | |
267 | ||
268 | /* This function returns a pointer to the string representation of the | |
269 | pathname of the dynamically-linked library that has just been | |
270 | loaded. | |
271 | ||
272 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
273 | or undefined results are guaranteed. | |
274 | ||
275 | This string's contents are only valid immediately after the | |
276 | inferior has stopped in the dynamic linker hook, and becomes | |
277 | invalid as soon as the inferior is continued. Clients should make | |
278 | a copy of this string if they wish to continue the inferior and | |
279 | then access the string. */ | |
280 | ||
281 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
282 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
283 | #endif | |
284 | ||
285 | /* This function returns a pointer to the string representation of the | |
286 | pathname of the dynamically-linked library that has just been | |
287 | unloaded. | |
288 | ||
289 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
290 | TRUE, or undefined results are guaranteed. | |
291 | ||
292 | This string's contents are only valid immediately after the | |
293 | inferior has stopped in the dynamic linker hook, and becomes | |
294 | invalid as soon as the inferior is continued. Clients should make | |
295 | a copy of this string if they wish to continue the inferior and | |
296 | then access the string. */ | |
297 | ||
298 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
299 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
300 | #endif | |
301 | ||
302 | /* This function is called by the "catch load" command. It allows the | |
303 | debugger to be notified by the dynamic linker when a specified | |
304 | library file (or any library file, if filename is NULL) is loaded. */ | |
305 | ||
306 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
307 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
308 | error ("catch of library loads not yet implemented on this platform") | |
309 | #endif | |
310 | ||
311 | /* This function is called by the "catch unload" command. It allows | |
312 | the debugger to be notified by the dynamic linker when a specified | |
313 | library file (or any library file, if filename is NULL) is | |
314 | unloaded. */ | |
315 | ||
316 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
317 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
318 | error ("catch of library unloads not yet implemented on this platform") | |
319 | #endif | |
320 | ||
468d015d JJ |
321 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
322 | static int | |
323 | breakpoint_enabled (struct breakpoint *b) | |
324 | { | |
325 | return b->enable_state == bp_enabled; | |
326 | } | |
327 | ||
c906108c SS |
328 | /* Set breakpoint count to NUM. */ |
329 | ||
330 | void | |
fba45db2 | 331 | set_breakpoint_count (int num) |
c906108c SS |
332 | { |
333 | breakpoint_count = num; | |
334 | set_internalvar (lookup_internalvar ("bpnum"), | |
335 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
336 | } | |
337 | ||
338 | /* Used in run_command to zero the hit count when a new run starts. */ | |
339 | ||
340 | void | |
fba45db2 | 341 | clear_breakpoint_hit_counts (void) |
c906108c SS |
342 | { |
343 | struct breakpoint *b; | |
344 | ||
345 | ALL_BREAKPOINTS (b) | |
346 | b->hit_count = 0; | |
347 | } | |
348 | ||
349 | /* Default address, symtab and line to put a breakpoint at | |
350 | for "break" command with no arg. | |
351 | if default_breakpoint_valid is zero, the other three are | |
352 | not valid, and "break" with no arg is an error. | |
353 | ||
354 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
355 | ||
356 | int default_breakpoint_valid; | |
357 | CORE_ADDR default_breakpoint_address; | |
358 | struct symtab *default_breakpoint_symtab; | |
359 | int default_breakpoint_line; | |
360 | \f | |
361 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
362 | Advance *PP after the string and any trailing whitespace. | |
363 | ||
364 | Currently the string can either be a number or "$" followed by the name | |
365 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
366 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
367 | ||
368 | TRAILER is a character which can be found after the number; most | |
369 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 370 | static int |
fba45db2 | 371 | get_number_trailer (char **pp, int trailer) |
c906108c | 372 | { |
5c44784c | 373 | int retval = 0; /* default */ |
c906108c SS |
374 | char *p = *pp; |
375 | ||
376 | if (p == NULL) | |
377 | /* Empty line means refer to the last breakpoint. */ | |
378 | return breakpoint_count; | |
379 | else if (*p == '$') | |
380 | { | |
381 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 382 | to pass to lookup_internalvar(). */ |
c906108c SS |
383 | char *varname; |
384 | char *start = ++p; | |
278cd55f | 385 | struct value *val; |
c906108c SS |
386 | |
387 | while (isalnum (*p) || *p == '_') | |
388 | p++; | |
389 | varname = (char *) alloca (p - start + 1); | |
390 | strncpy (varname, start, p - start); | |
391 | varname[p - start] = '\0'; | |
392 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
393 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
394 | retval = (int) value_as_long (val); | |
395 | else | |
396 | { | |
397 | printf_filtered ("Convenience variable must have integer value.\n"); | |
398 | retval = 0; | |
399 | } | |
c906108c SS |
400 | } |
401 | else | |
402 | { | |
403 | if (*p == '-') | |
404 | ++p; | |
405 | while (*p >= '0' && *p <= '9') | |
406 | ++p; | |
407 | if (p == *pp) | |
408 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
409 | { |
410 | /* Skip non-numeric token */ | |
411 | while (*p && !isspace((int) *p)) | |
412 | ++p; | |
413 | /* Return zero, which caller must interpret as error. */ | |
414 | retval = 0; | |
415 | } | |
416 | else | |
417 | retval = atoi (*pp); | |
418 | } | |
419 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
420 | { | |
421 | /* Trailing junk: return 0 and let caller print error msg. */ | |
422 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
423 | ++p; | |
424 | retval = 0; | |
c906108c | 425 | } |
c906108c SS |
426 | while (isspace (*p)) |
427 | p++; | |
428 | *pp = p; | |
429 | return retval; | |
430 | } | |
5c44784c | 431 | |
11cf8741 | 432 | |
5c44784c JM |
433 | /* Like get_number_trailer, but don't allow a trailer. */ |
434 | int | |
fba45db2 | 435 | get_number (char **pp) |
5c44784c JM |
436 | { |
437 | return get_number_trailer (pp, '\0'); | |
438 | } | |
439 | ||
440 | /* Parse a number or a range. | |
441 | * A number will be of the form handled by get_number. | |
442 | * A range will be of the form <number1> - <number2>, and | |
443 | * will represent all the integers between number1 and number2, | |
444 | * inclusive. | |
445 | * | |
446 | * While processing a range, this fuction is called iteratively; | |
447 | * At each call it will return the next value in the range. | |
448 | * | |
449 | * At the beginning of parsing a range, the char pointer PP will | |
450 | * be advanced past <number1> and left pointing at the '-' token. | |
451 | * Subsequent calls will not advance the pointer until the range | |
452 | * is completed. The call that completes the range will advance | |
453 | * pointer PP past <number2>. | |
454 | */ | |
455 | ||
456 | int | |
fba45db2 | 457 | get_number_or_range (char **pp) |
5c44784c JM |
458 | { |
459 | static int last_retval, end_value; | |
460 | static char *end_ptr; | |
461 | static int in_range = 0; | |
462 | ||
463 | if (**pp != '-') | |
464 | { | |
465 | /* Default case: pp is pointing either to a solo number, | |
466 | or to the first number of a range. */ | |
467 | last_retval = get_number_trailer (pp, '-'); | |
468 | if (**pp == '-') | |
469 | { | |
470 | char **temp; | |
471 | ||
472 | /* This is the start of a range (<number1> - <number2>). | |
473 | Skip the '-', parse and remember the second number, | |
474 | and also remember the end of the final token. */ | |
475 | ||
476 | temp = &end_ptr; | |
477 | end_ptr = *pp + 1; | |
478 | while (isspace ((int) *end_ptr)) | |
479 | end_ptr++; /* skip white space */ | |
480 | end_value = get_number (temp); | |
481 | if (end_value < last_retval) | |
482 | { | |
483 | error ("inverted range"); | |
484 | } | |
485 | else if (end_value == last_retval) | |
486 | { | |
487 | /* degenerate range (number1 == number2). Advance the | |
488 | token pointer so that the range will be treated as a | |
489 | single number. */ | |
490 | *pp = end_ptr; | |
491 | } | |
492 | else | |
493 | in_range = 1; | |
494 | } | |
495 | } | |
496 | else if (! in_range) | |
497 | error ("negative value"); | |
498 | else | |
499 | { | |
500 | /* pp points to the '-' that betokens a range. All | |
501 | number-parsing has already been done. Return the next | |
502 | integer value (one greater than the saved previous value). | |
503 | Do not advance the token pointer 'pp' until the end of range | |
504 | is reached. */ | |
505 | ||
506 | if (++last_retval == end_value) | |
507 | { | |
508 | /* End of range reached; advance token pointer. */ | |
509 | *pp = end_ptr; | |
510 | in_range = 0; | |
511 | } | |
512 | } | |
513 | return last_retval; | |
514 | } | |
515 | ||
516 | ||
c906108c SS |
517 | \f |
518 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
519 | ||
520 | static void | |
fba45db2 | 521 | condition_command (char *arg, int from_tty) |
c906108c | 522 | { |
52f0bd74 | 523 | struct breakpoint *b; |
c906108c | 524 | char *p; |
52f0bd74 | 525 | int bnum; |
c906108c SS |
526 | |
527 | if (arg == 0) | |
528 | error_no_arg ("breakpoint number"); | |
529 | ||
530 | p = arg; | |
531 | bnum = get_number (&p); | |
5c44784c JM |
532 | if (bnum == 0) |
533 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
534 | |
535 | ALL_BREAKPOINTS (b) | |
536 | if (b->number == bnum) | |
c5aa993b JM |
537 | { |
538 | if (b->cond) | |
539 | { | |
b8c9b27d | 540 | xfree (b->cond); |
c5aa993b JM |
541 | b->cond = 0; |
542 | } | |
543 | if (b->cond_string != NULL) | |
b8c9b27d | 544 | xfree (b->cond_string); |
c906108c | 545 | |
c5aa993b JM |
546 | if (*p == 0) |
547 | { | |
548 | b->cond = 0; | |
549 | b->cond_string = NULL; | |
550 | if (from_tty) | |
551 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
552 | } | |
553 | else | |
554 | { | |
555 | arg = p; | |
556 | /* I don't know if it matters whether this is the string the user | |
557 | typed in or the decompiled expression. */ | |
558 | b->cond_string = savestring (arg, strlen (arg)); | |
5cab636d | 559 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); |
c5aa993b JM |
560 | if (*arg) |
561 | error ("Junk at end of expression"); | |
562 | } | |
563 | breakpoints_changed (); | |
221ea385 | 564 | breakpoint_modify_event (b->number); |
c5aa993b JM |
565 | return; |
566 | } | |
c906108c SS |
567 | |
568 | error ("No breakpoint number %d.", bnum); | |
569 | } | |
570 | ||
c906108c | 571 | static void |
fba45db2 | 572 | commands_command (char *arg, int from_tty) |
c906108c | 573 | { |
52f0bd74 | 574 | struct breakpoint *b; |
c906108c | 575 | char *p; |
52f0bd74 | 576 | int bnum; |
c906108c SS |
577 | struct command_line *l; |
578 | ||
579 | /* If we allowed this, we would have problems with when to | |
580 | free the storage, if we change the commands currently | |
581 | being read from. */ | |
582 | ||
583 | if (executing_breakpoint_commands) | |
584 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
585 | ||
586 | p = arg; | |
587 | bnum = get_number (&p); | |
5c44784c | 588 | |
c906108c SS |
589 | if (p && *p) |
590 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 591 | |
c906108c SS |
592 | ALL_BREAKPOINTS (b) |
593 | if (b->number == bnum) | |
9ebf4acf AC |
594 | { |
595 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
596 | bnum); | |
597 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
598 | l = read_command_lines (tmpbuf, from_tty); | |
599 | do_cleanups (cleanups); | |
600 | free_command_lines (&b->commands); | |
601 | b->commands = l; | |
602 | breakpoints_changed (); | |
603 | breakpoint_modify_event (b->number); | |
604 | return; | |
c5aa993b | 605 | } |
c906108c SS |
606 | error ("No breakpoint number %d.", bnum); |
607 | } | |
608 | \f | |
609 | /* Like target_read_memory() but if breakpoints are inserted, return | |
610 | the shadow contents instead of the breakpoints themselves. | |
611 | ||
612 | Read "memory data" from whatever target or inferior we have. | |
613 | Returns zero if successful, errno value if not. EIO is used | |
614 | for address out of bounds. If breakpoints are inserted, returns | |
615 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
616 | ||
617 | int | |
fba45db2 | 618 | read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
619 | { |
620 | int status; | |
ffce0d52 | 621 | struct bp_location *b; |
c906108c SS |
622 | CORE_ADDR bp_addr = 0; |
623 | int bp_size = 0; | |
624 | ||
625 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
626 | /* No breakpoints on this machine. */ | |
627 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 628 | |
ffce0d52 | 629 | ALL_BP_LOCATIONS (b) |
c5aa993b | 630 | { |
ffce0d52 DJ |
631 | if (b->owner->type == bp_none) |
632 | warning ("reading through apparently deleted breakpoint #%d?", | |
633 | b->owner->number); | |
634 | ||
635 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 636 | continue; |
ffce0d52 | 637 | if (!b->inserted) |
c5aa993b JM |
638 | continue; |
639 | /* Addresses and length of the part of the breakpoint that | |
640 | we need to copy. */ | |
641 | /* XXXX The m68k, sh and h8300 have different local and remote | |
642 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
643 | correctly determine the breakpoints memory address and size | |
644 | for these targets. */ | |
ffce0d52 | 645 | bp_addr = b->address; |
c5aa993b JM |
646 | bp_size = 0; |
647 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
648 | continue; | |
649 | if (bp_size == 0) | |
650 | /* bp isn't valid */ | |
651 | continue; | |
652 | if (bp_addr + bp_size <= memaddr) | |
653 | /* The breakpoint is entirely before the chunk of memory we | |
654 | are reading. */ | |
655 | continue; | |
656 | if (bp_addr >= memaddr + len) | |
657 | /* The breakpoint is entirely after the chunk of memory we are | |
658 | reading. */ | |
659 | continue; | |
660 | /* Copy the breakpoint from the shadow contents, and recurse for | |
661 | the things before and after. */ | |
c906108c | 662 | { |
c5aa993b JM |
663 | /* Offset within shadow_contents. */ |
664 | int bptoffset = 0; | |
c906108c | 665 | |
c5aa993b JM |
666 | if (bp_addr < memaddr) |
667 | { | |
668 | /* Only copy the second part of the breakpoint. */ | |
669 | bp_size -= memaddr - bp_addr; | |
670 | bptoffset = memaddr - bp_addr; | |
671 | bp_addr = memaddr; | |
672 | } | |
673 | ||
674 | if (bp_addr + bp_size > memaddr + len) | |
675 | { | |
676 | /* Only copy the first part of the breakpoint. */ | |
677 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
678 | } | |
679 | ||
680 | memcpy (myaddr + bp_addr - memaddr, | |
ffce0d52 | 681 | b->shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
682 | |
683 | if (bp_addr > memaddr) | |
684 | { | |
685 | /* Copy the section of memory before the breakpoint. */ | |
686 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
687 | if (status != 0) | |
688 | return status; | |
689 | } | |
690 | ||
691 | if (bp_addr + bp_size < memaddr + len) | |
692 | { | |
693 | /* Copy the section of memory after the breakpoint. */ | |
d85310f7 MS |
694 | status = read_memory_nobpt (bp_addr + bp_size, |
695 | myaddr + bp_addr + bp_size - memaddr, | |
696 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
697 | if (status != 0) |
698 | return status; | |
699 | } | |
700 | return 0; | |
c906108c | 701 | } |
c5aa993b | 702 | } |
c906108c SS |
703 | /* Nothing overlaps. Just call read_memory_noerr. */ |
704 | return target_read_memory (memaddr, myaddr, len); | |
705 | } | |
c906108c | 706 | \f |
c5aa993b | 707 | |
687595f9 | 708 | /* A wrapper function for inserting catchpoints. */ |
3f8091c1 | 709 | static int |
687595f9 DJ |
710 | insert_catchpoint (struct ui_out *uo, void *args) |
711 | { | |
712 | struct breakpoint *b = (struct breakpoint *) args; | |
713 | int val = -1; | |
714 | ||
715 | switch (b->type) | |
716 | { | |
717 | case bp_catch_fork: | |
718 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
719 | break; | |
720 | case bp_catch_vfork: | |
721 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
722 | break; | |
723 | case bp_catch_exec: | |
724 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); | |
725 | break; | |
726 | default: | |
1171114a | 727 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); |
687595f9 DJ |
728 | break; |
729 | } | |
730 | ||
731 | if (val < 0) | |
732 | throw_exception (RETURN_ERROR); | |
733 | ||
734 | return 0; | |
735 | } | |
736 | ||
879bfdc2 DJ |
737 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
738 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
739 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
740 | ||
741 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
742 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 743 | static int |
879bfdc2 | 744 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
745 | struct ui_file *tmp_error_stream, |
746 | int *disabled_breaks, int *process_warning, | |
747 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
748 | { |
749 | int val = 0; | |
750 | ||
751 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
752 | breakpoints should not be inserted. */ | |
468d015d | 753 | if (!breakpoint_enabled (bpt->owner)) |
879bfdc2 DJ |
754 | return 0; |
755 | ||
756 | if (bpt->inserted || bpt->duplicate) | |
757 | return 0; | |
758 | ||
759 | if (bpt->loc_type == bp_loc_software_breakpoint | |
760 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
761 | { | |
762 | /* First check to see if we have to handle an overlay. */ | |
763 | if (overlay_debugging == ovly_off | |
764 | || bpt->section == NULL | |
765 | || !(section_is_overlay (bpt->section))) | |
766 | { | |
767 | /* No overlay handling: just set the breakpoint. */ | |
768 | ||
769 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
770 | val = target_insert_hw_breakpoint (bpt->address, | |
771 | bpt->shadow_contents); | |
772 | else | |
773 | val = target_insert_breakpoint (bpt->address, | |
774 | bpt->shadow_contents); | |
775 | } | |
776 | else | |
777 | { | |
778 | /* This breakpoint is in an overlay section. | |
779 | Shall we set a breakpoint at the LMA? */ | |
780 | if (!overlay_events_enabled) | |
781 | { | |
782 | /* Yes -- overlay event support is not active, | |
783 | so we must try to set a breakpoint at the LMA. | |
784 | This will not work for a hardware breakpoint. */ | |
785 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
786 | warning ("hardware breakpoint %d not supported in overlay!\n", | |
787 | bpt->owner->number); | |
788 | else | |
789 | { | |
790 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
791 | bpt->section); | |
792 | /* Set a software (trap) breakpoint at the LMA. */ | |
793 | val = target_insert_breakpoint (addr, bpt->shadow_contents); | |
794 | if (val != 0) | |
795 | fprintf_unfiltered (tmp_error_stream, | |
796 | "Overlay breakpoint %d failed: in ROM?", | |
797 | bpt->owner->number); | |
798 | } | |
799 | } | |
800 | /* Shall we set a breakpoint at the VMA? */ | |
801 | if (section_is_mapped (bpt->section)) | |
802 | { | |
803 | /* Yes. This overlay section is mapped into memory. */ | |
804 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
805 | val = target_insert_hw_breakpoint (bpt->address, | |
806 | bpt->shadow_contents); | |
807 | else | |
808 | val = target_insert_breakpoint (bpt->address, | |
809 | bpt->shadow_contents); | |
810 | } | |
811 | else | |
812 | { | |
813 | /* No. This breakpoint will not be inserted. | |
814 | No error, but do not mark the bp as 'inserted'. */ | |
815 | return 0; | |
816 | } | |
817 | } | |
818 | ||
819 | if (val) | |
820 | { | |
821 | /* Can't set the breakpoint. */ | |
822 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
823 | if (DISABLE_UNSETTABLE_BREAK (bpt->address)) | |
824 | { | |
825 | /* See also: disable_breakpoints_in_shlibs. */ | |
826 | val = 0; | |
827 | bpt->owner->enable_state = bp_shlib_disabled; | |
828 | if (!*disabled_breaks) | |
829 | { | |
830 | fprintf_unfiltered (tmp_error_stream, | |
831 | "Cannot insert breakpoint %d.\n", | |
832 | bpt->owner->number); | |
833 | fprintf_unfiltered (tmp_error_stream, | |
834 | "Temporarily disabling shared library breakpoints:\n"); | |
835 | } | |
836 | *disabled_breaks = 1; | |
837 | fprintf_unfiltered (tmp_error_stream, | |
838 | "breakpoint #%d\n", bpt->owner->number); | |
839 | } | |
840 | else | |
841 | #endif | |
842 | { | |
843 | #ifdef ONE_PROCESS_WRITETEXT | |
844 | *process_warning = 1; | |
845 | #endif | |
846 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
847 | { | |
848 | *hw_breakpoint_error = 1; | |
849 | fprintf_unfiltered (tmp_error_stream, | |
850 | "Cannot insert hardware breakpoint %d.\n", | |
851 | bpt->owner->number); | |
852 | } | |
853 | else | |
854 | { | |
855 | fprintf_unfiltered (tmp_error_stream, | |
856 | "Cannot insert breakpoint %d.\n", | |
857 | bpt->owner->number); | |
858 | fprintf_filtered (tmp_error_stream, | |
859 | "Error accessing memory address "); | |
860 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
861 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
862 | safe_strerror (val)); | |
863 | } | |
864 | ||
865 | } | |
866 | } | |
867 | else | |
868 | bpt->inserted = 1; | |
869 | ||
870 | return val; | |
871 | } | |
872 | ||
873 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
874 | /* NOTE drow/2003-09-08: This state only exists for removing | |
875 | watchpoints. It's not clear that it's necessary... */ | |
876 | && bpt->owner->disposition != disp_del_at_next_stop) | |
877 | { | |
878 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
879 | based on the expression. Ideally this should happen at a higher level, | |
880 | and there should be one bp_location for each computed address we | |
881 | must watch. As soon as a many-to-one mapping is available I'll | |
882 | convert this. */ | |
883 | ||
884 | struct frame_info *saved_frame; | |
885 | int saved_level, within_current_scope; | |
886 | struct value *mark = value_mark (); | |
887 | struct value *v; | |
888 | ||
889 | /* Save the current frame and level so we can restore it after | |
890 | evaluating the watchpoint expression on its own frame. */ | |
891 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
892 | took a frame parameter, so that we didn't have to change the | |
893 | selected frame. */ | |
894 | saved_frame = deprecated_selected_frame; | |
895 | saved_level = frame_relative_level (deprecated_selected_frame); | |
896 | ||
897 | /* Determine if the watchpoint is within scope. */ | |
898 | if (bpt->owner->exp_valid_block == NULL) | |
899 | within_current_scope = 1; | |
900 | else | |
901 | { | |
902 | struct frame_info *fi; | |
903 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
904 | within_current_scope = (fi != NULL); | |
905 | if (within_current_scope) | |
906 | select_frame (fi); | |
907 | } | |
908 | ||
909 | if (within_current_scope) | |
910 | { | |
911 | /* Evaluate the expression and cut the chain of values | |
912 | produced off from the value chain. | |
913 | ||
914 | Make sure the value returned isn't lazy; we use | |
915 | laziness to determine what memory GDB actually needed | |
916 | in order to compute the value of the expression. */ | |
917 | v = evaluate_expression (bpt->owner->exp); | |
918 | VALUE_CONTENTS (v); | |
919 | value_release_to_mark (mark); | |
920 | ||
921 | bpt->owner->val_chain = v; | |
922 | bpt->inserted = 1; | |
923 | ||
924 | /* Look at each value on the value chain. */ | |
925 | for (; v; v = v->next) | |
926 | { | |
927 | /* If it's a memory location, and GDB actually needed | |
928 | its contents to evaluate the expression, then we | |
929 | must watch it. */ | |
930 | if (VALUE_LVAL (v) == lval_memory | |
931 | && ! VALUE_LAZY (v)) | |
932 | { | |
933 | struct type *vtype = check_typedef (VALUE_TYPE (v)); | |
934 | ||
935 | /* We only watch structs and arrays if user asked | |
936 | for it explicitly, never if they just happen to | |
937 | appear in the middle of some value chain. */ | |
938 | if (v == bpt->owner->val_chain | |
939 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
940 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
941 | { | |
942 | CORE_ADDR addr; | |
943 | int len, type; | |
944 | ||
945 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
946 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
947 | type = hw_write; | |
948 | if (bpt->owner->type == bp_read_watchpoint) | |
949 | type = hw_read; | |
950 | else if (bpt->owner->type == bp_access_watchpoint) | |
951 | type = hw_access; | |
952 | ||
953 | val = target_insert_watchpoint (addr, len, type); | |
954 | if (val == -1) | |
955 | { | |
956 | /* Don't exit the loop, try to insert | |
957 | every value on the value chain. That's | |
958 | because we will be removing all the | |
959 | watches below, and removing a | |
960 | watchpoint we didn't insert could have | |
961 | adverse effects. */ | |
962 | bpt->inserted = 0; | |
963 | } | |
964 | val = 0; | |
965 | } | |
966 | } | |
967 | } | |
968 | /* Failure to insert a watchpoint on any memory value in the | |
969 | value chain brings us here. */ | |
970 | if (!bpt->inserted) | |
971 | { | |
0bde7532 | 972 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
973 | *hw_breakpoint_error = 1; |
974 | fprintf_unfiltered (tmp_error_stream, | |
975 | "Could not insert hardware watchpoint %d.\n", | |
976 | bpt->owner->number); | |
977 | val = -1; | |
978 | } | |
979 | } | |
980 | else | |
981 | { | |
982 | printf_filtered ("Hardware watchpoint %d deleted ", bpt->owner->number); | |
983 | printf_filtered ("because the program has left the block \n"); | |
984 | printf_filtered ("in which its expression is valid.\n"); | |
985 | if (bpt->owner->related_breakpoint) | |
986 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
987 | bpt->owner->disposition = disp_del_at_next_stop; | |
988 | } | |
989 | ||
990 | /* Restore the frame and level. */ | |
991 | if (saved_frame != deprecated_selected_frame | |
992 | || saved_level != frame_relative_level (deprecated_selected_frame)) | |
993 | select_frame (saved_frame); | |
994 | ||
995 | return val; | |
996 | } | |
997 | ||
998 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
999 | { | |
1000 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1001 | breakpoint. Once again, it would be better if this was represented | |
1002 | as two bp_locations. */ | |
1003 | ||
1004 | /* If we get here, we must have a callback mechanism for exception | |
1005 | events -- with g++ style embedded label support, we insert | |
1006 | ordinary breakpoints and not catchpoints. */ | |
1007 | val = target_insert_breakpoint (bpt->address, bpt->shadow_contents); | |
1008 | if (val) | |
1009 | { | |
1010 | /* Couldn't set breakpoint for some reason */ | |
1011 | fprintf_unfiltered (tmp_error_stream, | |
1012 | "Cannot insert catchpoint %d; disabling it.\n", | |
1013 | bpt->owner->number); | |
1014 | fprintf_filtered (tmp_error_stream, | |
1015 | "Error accessing memory address "); | |
1016 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
1017 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
1018 | safe_strerror (val)); | |
1019 | bpt->owner->enable_state = bp_disabled; | |
1020 | } | |
1021 | else | |
1022 | { | |
1023 | /* Bp set, now make sure callbacks are enabled */ | |
1024 | /* Format possible error msg */ | |
1025 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1026 | bpt->owner->number); | |
1027 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1028 | int val; | |
1029 | args_for_catchpoint_enable args; | |
1030 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1031 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1032 | args.enable_p = 1; | |
1033 | val = catch_errors (cover_target_enable_exception_callback, | |
1034 | &args, message, RETURN_MASK_ALL); | |
1035 | do_cleanups (cleanups); | |
1036 | if (val != 0 && val != -1) | |
1037 | bpt->inserted = 1; | |
1038 | ||
1039 | /* Check if something went wrong; val == 0 can be ignored */ | |
1040 | if (val == -1) | |
1041 | { | |
1042 | /* something went wrong */ | |
1043 | fprintf_unfiltered (tmp_error_stream, | |
1044 | "Cannot insert catchpoint %d; disabling it.\n", | |
1045 | bpt->owner->number); | |
1046 | bpt->owner->enable_state = bp_disabled; | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | return val; | |
1051 | } | |
1052 | ||
1053 | else if (bpt->owner->type == bp_catch_fork | |
1054 | || bpt->owner->type == bp_catch_vfork | |
1055 | || bpt->owner->type == bp_catch_exec) | |
1056 | { | |
1057 | char *prefix = xstrprintf ("warning: inserting catchpoint %d: ", | |
1058 | bpt->owner->number); | |
1059 | struct cleanup *cleanups = make_cleanup (xfree, prefix); | |
1060 | val = catch_exceptions (uiout, insert_catchpoint, bpt->owner, prefix, | |
1061 | RETURN_MASK_ERROR); | |
1062 | do_cleanups (cleanups); | |
1063 | if (val < 0) | |
1064 | bpt->owner->enable_state = bp_disabled; | |
1065 | else | |
1066 | bpt->inserted = 1; | |
1640b821 DJ |
1067 | |
1068 | /* We've already printed an error message if there was a problem | |
1069 | inserting this catchpoint, and we've disabled the catchpoint, | |
1070 | so just return success. */ | |
1071 | return 0; | |
879bfdc2 DJ |
1072 | } |
1073 | ||
1074 | return 0; | |
1075 | } | |
1076 | ||
c906108c SS |
1077 | /* insert_breakpoints is used when starting or continuing the program. |
1078 | remove_breakpoints is used when the program stops. | |
1079 | Both return zero if successful, | |
1080 | or an `errno' value if could not write the inferior. */ | |
1081 | ||
1082 | int | |
fba45db2 | 1083 | insert_breakpoints (void) |
c906108c | 1084 | { |
879bfdc2 | 1085 | struct bp_location *b, *temp; |
53a5351d | 1086 | int return_val = 0; /* return success code. */ |
c906108c SS |
1087 | int val = 0; |
1088 | int disabled_breaks = 0; | |
81d0cc19 GS |
1089 | int hw_breakpoint_error = 0; |
1090 | int process_warning = 0; | |
c906108c | 1091 | |
81d0cc19 GS |
1092 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1093 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1094 | ||
1095 | /* Explicitly mark the warning -- this will only be printed if | |
1096 | there was an error. */ | |
1097 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1098 | |
879bfdc2 DJ |
1099 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1100 | { | |
1101 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1102 | breakpoints should not be inserted. */ | |
468d015d | 1103 | if (!breakpoint_enabled (b->owner)) |
879bfdc2 DJ |
1104 | continue; |
1105 | ||
1106 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when | |
1107 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1108 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1109 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1110 | { | |
1111 | struct value *val; | |
1112 | val = evaluate_expression (b->owner->exp); | |
1113 | release_value (val); | |
1114 | if (VALUE_LAZY (val)) | |
1115 | value_fetch_lazy (val); | |
1116 | b->owner->val = val; | |
1117 | } | |
a881cf8e | 1118 | |
879bfdc2 DJ |
1119 | val = insert_bp_location (b, tmp_error_stream, |
1120 | &disabled_breaks, &process_warning, | |
1121 | &hw_breakpoint_error); | |
1122 | if (val) | |
1123 | return_val = val; | |
1124 | } | |
c906108c | 1125 | |
879bfdc2 | 1126 | if (return_val) |
81d0cc19 GS |
1127 | { |
1128 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1129 | message about possibly exhausted resources. */ | |
879bfdc2 | 1130 | if (hw_breakpoint_error) |
81d0cc19 | 1131 | { |
c6510018 MS |
1132 | fprintf_unfiltered (tmp_error_stream, |
1133 | "Could not insert hardware breakpoints:\n\ | |
1134 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1135 | } |
c6510018 | 1136 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1137 | if (process_warning) |
c6510018 MS |
1138 | fprintf_unfiltered (tmp_error_stream, |
1139 | "The same program may be running in another process."); | |
1140 | #endif | |
81d0cc19 GS |
1141 | target_terminal_ours_for_output (); |
1142 | error_stream (tmp_error_stream); | |
1143 | } | |
53a5351d | 1144 | return return_val; |
c906108c SS |
1145 | } |
1146 | ||
c906108c | 1147 | int |
fba45db2 | 1148 | remove_breakpoints (void) |
c906108c | 1149 | { |
0bde7532 | 1150 | struct bp_location *b; |
c906108c SS |
1151 | int val; |
1152 | ||
0bde7532 | 1153 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1154 | { |
0bde7532 | 1155 | if (b->inserted) |
c5aa993b JM |
1156 | { |
1157 | val = remove_breakpoint (b, mark_uninserted); | |
1158 | if (val != 0) | |
1159 | return val; | |
1160 | } | |
1161 | } | |
c906108c SS |
1162 | return 0; |
1163 | } | |
1164 | ||
692590c1 | 1165 | int |
80ce1ecb | 1166 | remove_hw_watchpoints (void) |
692590c1 | 1167 | { |
0bde7532 | 1168 | struct bp_location *b; |
692590c1 MS |
1169 | int val; |
1170 | ||
0bde7532 | 1171 | ALL_BP_LOCATIONS (b) |
692590c1 | 1172 | { |
0bde7532 | 1173 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1174 | { |
1175 | val = remove_breakpoint (b, mark_uninserted); | |
1176 | if (val != 0) | |
1177 | return val; | |
1178 | } | |
1179 | } | |
1180 | return 0; | |
1181 | } | |
1182 | ||
c906108c | 1183 | int |
fba45db2 | 1184 | reattach_breakpoints (int pid) |
c906108c | 1185 | { |
0bde7532 | 1186 | struct bp_location *b; |
c906108c | 1187 | int val; |
ce696e05 | 1188 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1189 | |
ce696e05 KB |
1190 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1191 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1192 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1193 | { |
0bde7532 | 1194 | if (b->inserted) |
c5aa993b JM |
1195 | { |
1196 | remove_breakpoint (b, mark_inserted); | |
0bde7532 DJ |
1197 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1198 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
c5aa993b | 1199 | else |
0bde7532 DJ |
1200 | val = target_insert_breakpoint (b->address, b->shadow_contents); |
1201 | /* FIXME drow/2003-10-07: This doesn't handle any other kinds of | |
1202 | breakpoints. It's wrong for watchpoints, for example. */ | |
c5aa993b JM |
1203 | if (val != 0) |
1204 | { | |
ce696e05 | 1205 | do_cleanups (old_chain); |
c5aa993b JM |
1206 | return val; |
1207 | } | |
1208 | } | |
1209 | } | |
ce696e05 | 1210 | do_cleanups (old_chain); |
c906108c SS |
1211 | return 0; |
1212 | } | |
1213 | ||
1214 | void | |
fba45db2 | 1215 | update_breakpoints_after_exec (void) |
c906108c | 1216 | { |
c5aa993b JM |
1217 | struct breakpoint *b; |
1218 | struct breakpoint *temp; | |
c906108c SS |
1219 | |
1220 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1221 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1222 | shadow is NOT valid after an exec()! */ | |
1223 | mark_breakpoints_out (); | |
1224 | ||
1225 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1226 | { |
1227 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1228 | if (b->type == bp_shlib_event) | |
1229 | { | |
1230 | delete_breakpoint (b); | |
1231 | continue; | |
1232 | } | |
c906108c | 1233 | |
1900040c MS |
1234 | /* Thread event breakpoints must be set anew after an exec(), |
1235 | as must overlay event breakpoints. */ | |
1236 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1237 | { |
1238 | delete_breakpoint (b); | |
1239 | continue; | |
1240 | } | |
1241 | ||
c5aa993b JM |
1242 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1243 | if (b->type == bp_step_resume) | |
1244 | { | |
1245 | delete_breakpoint (b); | |
1246 | continue; | |
1247 | } | |
1248 | ||
1249 | /* Ditto the sigtramp handler breakpoints. */ | |
1250 | if (b->type == bp_through_sigtramp) | |
1251 | { | |
1252 | delete_breakpoint (b); | |
1253 | continue; | |
1254 | } | |
1255 | ||
1256 | /* Ditto the exception-handling catchpoints. */ | |
1257 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1258 | { | |
1259 | delete_breakpoint (b); | |
1260 | continue; | |
1261 | } | |
1262 | ||
1263 | /* Don't delete an exec catchpoint, because else the inferior | |
1264 | won't stop when it ought! | |
1265 | ||
1266 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1267 | on this target, we may not be able to stop when the vfork is |
1268 | seen, but only when the subsequent exec is seen. (And because | |
1269 | deleting fork catchpoints here but not vfork catchpoints will | |
1270 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1271 | |
1272 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1273 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1274 | automagically. Certainly on HP-UX that's true. |
1275 | ||
1276 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
41989fcd AC |
1277 | valid code address on some platforms (like the mn10300 |
1278 | simulators). We shouldn't assign any special interpretation to | |
1279 | a breakpoint with a zero address. And in fact, GDB doesn't --- | |
1280 | I can't see what that comment above is talking about. As far | |
1281 | as I can tell, setting the address of a | |
644a1fe1 JB |
1282 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero |
1283 | is meaningless, since those are implemented with HP-UX kernel | |
1284 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1285 | if ((b->type == bp_catch_exec) || |
1286 | (b->type == bp_catch_vfork) || | |
1287 | (b->type == bp_catch_fork)) | |
1288 | { | |
5cab636d | 1289 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b JM |
1290 | continue; |
1291 | } | |
1292 | ||
1293 | /* bp_finish is a special case. The only way we ought to be able | |
1294 | to see one of these when an exec() has happened, is if the user | |
1295 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1296 | carries them to the call-site of the current callee, by setting | |
1297 | a temporary bp there and resuming. But in this case, the finish | |
1298 | will carry them entirely through the vfork & exec. | |
1299 | ||
1300 | We don't want to allow a bp_finish to remain inserted now. But | |
1301 | we can't safely delete it, 'cause finish_command has a handle to | |
1302 | the bp on a bpstat, and will later want to delete it. There's a | |
1303 | chance (and I've seen it happen) that if we delete the bp_finish | |
1304 | here, that its storage will get reused by the time finish_command | |
1305 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1306 | We really must allow finish_command to delete a bp_finish. | |
1307 | ||
53a5351d JM |
1308 | In the absense of a general solution for the "how do we know |
1309 | it's safe to delete something others may have handles to?" | |
1310 | problem, what we'll do here is just uninsert the bp_finish, and | |
1311 | let finish_command delete it. | |
1312 | ||
1313 | (We know the bp_finish is "doomed" in the sense that it's | |
1314 | momentary, and will be deleted as soon as finish_command sees | |
1315 | the inferior stopped. So it doesn't matter that the bp's | |
1316 | address is probably bogus in the new a.out, unlike e.g., the | |
1317 | solib breakpoints.) */ | |
c5aa993b | 1318 | |
c5aa993b JM |
1319 | if (b->type == bp_finish) |
1320 | { | |
1321 | continue; | |
1322 | } | |
1323 | ||
1324 | /* Without a symbolic address, we have little hope of the | |
1325 | pre-exec() address meaning the same thing in the post-exec() | |
1326 | a.out. */ | |
1327 | if (b->addr_string == NULL) | |
1328 | { | |
1329 | delete_breakpoint (b); | |
1330 | continue; | |
1331 | } | |
1332 | ||
1333 | /* If this breakpoint has survived the above battery of checks, then | |
1334 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1335 | to a target address, rather than reusing the old evaluation. |
1336 | ||
1337 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1338 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1339 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1340 | the breakpoint's address from scratch, or deletes it if it can't. | |
1341 | So I think this assignment could be deleted without effect. */ | |
5cab636d | 1342 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b | 1343 | } |
1900040c MS |
1344 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1345 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1346 | } |
1347 | ||
1348 | int | |
fba45db2 | 1349 | detach_breakpoints (int pid) |
c906108c | 1350 | { |
0bde7532 | 1351 | struct bp_location *b; |
c906108c | 1352 | int val; |
ce696e05 | 1353 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1354 | |
39f77062 KB |
1355 | if (pid == PIDGET (inferior_ptid)) |
1356 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1357 | |
ce696e05 KB |
1358 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1359 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1360 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1361 | { |
0bde7532 | 1362 | if (b->inserted) |
c5aa993b JM |
1363 | { |
1364 | val = remove_breakpoint (b, mark_inserted); | |
1365 | if (val != 0) | |
1366 | { | |
ce696e05 | 1367 | do_cleanups (old_chain); |
c5aa993b JM |
1368 | return val; |
1369 | } | |
1370 | } | |
1371 | } | |
ce696e05 | 1372 | do_cleanups (old_chain); |
c906108c SS |
1373 | return 0; |
1374 | } | |
1375 | ||
1376 | static int | |
0bde7532 | 1377 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1378 | { |
1379 | int val; | |
c5aa993b | 1380 | |
0bde7532 | 1381 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1382 | /* Permanent breakpoints cannot be inserted or removed. */ |
1383 | return 0; | |
1384 | ||
0bde7532 | 1385 | if (b->owner->type == bp_none) |
53a5351d | 1386 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
0bde7532 DJ |
1387 | b->owner->number); |
1388 | ||
1389 | if (b->loc_type == bp_loc_software_breakpoint | |
1390 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1391 | { |
c02f5703 MS |
1392 | /* "Normal" instruction breakpoint: either the standard |
1393 | trap-instruction bp (bp_breakpoint), or a | |
1394 | bp_hardware_breakpoint. */ | |
1395 | ||
1396 | /* First check to see if we have to handle an overlay. */ | |
1397 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1398 | || b->section == NULL |
1399 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1400 | { |
1401 | /* No overlay handling: just remove the breakpoint. */ | |
1402 | ||
0bde7532 DJ |
1403 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1404 | val = target_remove_hw_breakpoint (b->address, | |
1405 | b->shadow_contents); | |
c02f5703 | 1406 | else |
0bde7532 | 1407 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c02f5703 | 1408 | } |
c906108c SS |
1409 | else |
1410 | { | |
c02f5703 MS |
1411 | /* This breakpoint is in an overlay section. |
1412 | Did we set a breakpoint at the LMA? */ | |
1413 | if (!overlay_events_enabled) | |
1414 | { | |
1415 | /* Yes -- overlay event support is not active, so we | |
1416 | should have set a breakpoint at the LMA. Remove it. | |
1417 | */ | |
0bde7532 DJ |
1418 | CORE_ADDR addr = overlay_unmapped_address (b->address, |
1419 | b->section); | |
c02f5703 MS |
1420 | /* Ignore any failures: if the LMA is in ROM, we will |
1421 | have already warned when we failed to insert it. */ | |
0bde7532 DJ |
1422 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1423 | target_remove_hw_breakpoint (addr, b->shadow_contents); | |
c02f5703 | 1424 | else |
0bde7532 | 1425 | target_remove_breakpoint (addr, b->shadow_contents); |
c02f5703 MS |
1426 | } |
1427 | /* Did we set a breakpoint at the VMA? | |
1428 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1429 | if (b->inserted) |
c906108c | 1430 | { |
c02f5703 MS |
1431 | /* Yes -- remove it. Previously we did not bother to |
1432 | remove the breakpoint if the section had been | |
1433 | unmapped, but let's not rely on that being safe. We | |
1434 | don't know what the overlay manager might do. */ | |
0bde7532 DJ |
1435 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1436 | val = target_remove_hw_breakpoint (b->address, | |
1437 | b->shadow_contents); | |
c02f5703 | 1438 | else |
0bde7532 DJ |
1439 | val = target_remove_breakpoint (b->address, |
1440 | b->shadow_contents); | |
c906108c | 1441 | } |
c02f5703 MS |
1442 | else |
1443 | { | |
1444 | /* No -- not inserted, so no need to remove. No error. */ | |
1445 | val = 0; | |
1446 | } | |
c906108c SS |
1447 | } |
1448 | if (val) | |
1449 | return val; | |
0bde7532 | 1450 | b->inserted = (is == mark_inserted); |
c906108c | 1451 | } |
0bde7532 | 1452 | else if (b->loc_type == bp_loc_hardware_watchpoint |
468d015d | 1453 | && breakpoint_enabled (b->owner) |
0bde7532 | 1454 | && !b->duplicate) |
c906108c | 1455 | { |
278cd55f AC |
1456 | struct value *v; |
1457 | struct value *n; | |
c5aa993b | 1458 | |
0bde7532 | 1459 | b->inserted = (is == mark_inserted); |
c906108c | 1460 | /* Walk down the saved value chain. */ |
0bde7532 | 1461 | for (v = b->owner->val_chain; v; v = v->next) |
c906108c SS |
1462 | { |
1463 | /* For each memory reference remove the watchpoint | |
1464 | at that address. */ | |
5c44784c JM |
1465 | if (VALUE_LVAL (v) == lval_memory |
1466 | && ! VALUE_LAZY (v)) | |
c906108c | 1467 | { |
2e70b7b9 MS |
1468 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1469 | ||
0bde7532 | 1470 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1471 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1472 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1473 | { | |
1474 | CORE_ADDR addr; | |
1475 | int len, type; | |
1476 | ||
1477 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1478 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1479 | type = hw_write; | |
0bde7532 | 1480 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1481 | type = hw_read; |
0bde7532 | 1482 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1483 | type = hw_access; |
1484 | ||
1485 | val = target_remove_watchpoint (addr, len, type); | |
1486 | if (val == -1) | |
0bde7532 | 1487 | b->inserted = 1; |
2e70b7b9 MS |
1488 | val = 0; |
1489 | } | |
c906108c SS |
1490 | } |
1491 | } | |
1492 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1493 | if ((is == mark_uninserted) && (b->inserted)) |
53a5351d | 1494 | warning ("Could not remove hardware watchpoint %d.", |
0bde7532 | 1495 | b->owner->number); |
c5aa993b | 1496 | |
c906108c | 1497 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1498 | the next time the watchpoint is inserted. */ |
0bde7532 | 1499 | for (v = b->owner->val_chain; v; v = n) |
c906108c SS |
1500 | { |
1501 | n = v->next; | |
1502 | value_free (v); | |
1503 | } | |
0bde7532 | 1504 | b->owner->val_chain = NULL; |
c906108c | 1505 | } |
0bde7532 DJ |
1506 | else if ((b->owner->type == bp_catch_fork || |
1507 | b->owner->type == bp_catch_vfork || | |
1508 | b->owner->type == bp_catch_exec) | |
468d015d | 1509 | && breakpoint_enabled (b->owner) |
0bde7532 | 1510 | && !b->duplicate) |
c906108c SS |
1511 | { |
1512 | val = -1; | |
0bde7532 | 1513 | switch (b->owner->type) |
c5aa993b JM |
1514 | { |
1515 | case bp_catch_fork: | |
39f77062 | 1516 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1517 | break; |
1518 | case bp_catch_vfork: | |
39f77062 | 1519 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1520 | break; |
1521 | case bp_catch_exec: | |
39f77062 | 1522 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1523 | break; |
ac9a91a7 | 1524 | default: |
53a5351d | 1525 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1526 | break; |
c5aa993b | 1527 | } |
c906108c SS |
1528 | if (val) |
1529 | return val; | |
0bde7532 | 1530 | b->inserted = (is == mark_inserted); |
c906108c | 1531 | } |
0bde7532 DJ |
1532 | else if ((b->owner->type == bp_catch_catch || |
1533 | b->owner->type == bp_catch_throw) | |
468d015d | 1534 | && breakpoint_enabled (b->owner) |
0bde7532 | 1535 | && !b->duplicate) |
c906108c SS |
1536 | { |
1537 | ||
0bde7532 | 1538 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1539 | if (val) |
c5aa993b | 1540 | return val; |
0bde7532 | 1541 | b->inserted = (is == mark_inserted); |
c906108c | 1542 | } |
0bde7532 DJ |
1543 | else if (ep_is_exception_catchpoint (b->owner) |
1544 | && b->inserted /* sometimes previous insert doesn't happen */ | |
468d015d | 1545 | && breakpoint_enabled (b->owner) |
0bde7532 | 1546 | && !b->duplicate) |
c906108c SS |
1547 | { |
1548 | ||
0bde7532 | 1549 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1550 | if (val) |
c5aa993b JM |
1551 | return val; |
1552 | ||
0bde7532 | 1553 | b->inserted = (is == mark_inserted); |
c906108c SS |
1554 | } |
1555 | ||
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | /* Clear the "inserted" flag in all breakpoints. */ | |
1560 | ||
1561 | void | |
fba45db2 | 1562 | mark_breakpoints_out (void) |
c906108c | 1563 | { |
075f6582 | 1564 | struct bp_location *bpt; |
c906108c | 1565 | |
075f6582 DJ |
1566 | ALL_BP_LOCATIONS (bpt) |
1567 | bpt->inserted = 0; | |
c906108c SS |
1568 | } |
1569 | ||
53a5351d JM |
1570 | /* Clear the "inserted" flag in all breakpoints and delete any |
1571 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1572 | |
1573 | Plus other such housekeeping that has to be done for breakpoints | |
1574 | between runs. | |
1575 | ||
53a5351d JM |
1576 | Note: this function gets called at the end of a run (by |
1577 | generic_mourn_inferior) and when a run begins (by | |
1578 | init_wait_for_inferior). */ | |
c906108c SS |
1579 | |
1580 | ||
1581 | ||
1582 | void | |
fba45db2 | 1583 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1584 | { |
52f0bd74 | 1585 | struct breakpoint *b, *temp; |
075f6582 | 1586 | struct bp_location *bpt; |
c906108c SS |
1587 | static int warning_needed = 0; |
1588 | ||
075f6582 DJ |
1589 | ALL_BP_LOCATIONS (bpt) |
1590 | bpt->inserted = 0; | |
1591 | ||
c906108c | 1592 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1593 | { |
c5aa993b JM |
1594 | switch (b->type) |
1595 | { | |
1596 | case bp_call_dummy: | |
1597 | case bp_watchpoint_scope: | |
c906108c | 1598 | |
c5aa993b JM |
1599 | /* If the call dummy breakpoint is at the entry point it will |
1600 | cause problems when the inferior is rerun, so we better | |
1601 | get rid of it. | |
c906108c | 1602 | |
c5aa993b JM |
1603 | Also get rid of scope breakpoints. */ |
1604 | delete_breakpoint (b); | |
1605 | break; | |
c906108c | 1606 | |
c5aa993b JM |
1607 | case bp_watchpoint: |
1608 | case bp_hardware_watchpoint: | |
1609 | case bp_read_watchpoint: | |
1610 | case bp_access_watchpoint: | |
c906108c | 1611 | |
c5aa993b JM |
1612 | /* Likewise for watchpoints on local expressions. */ |
1613 | if (b->exp_valid_block != NULL) | |
1614 | delete_breakpoint (b); | |
c860120c PM |
1615 | if (context == inf_starting) |
1616 | { | |
1617 | /* Reset val field to force reread of starting value | |
1618 | in insert_breakpoints. */ | |
1619 | if (b->val) | |
1620 | value_free (b->val); | |
1621 | b->val = NULL; | |
1622 | } | |
c5aa993b JM |
1623 | break; |
1624 | default: | |
1625 | /* Likewise for exception catchpoints in dynamic-linked | |
1626 | executables where required */ | |
1627 | if (ep_is_exception_catchpoint (b) && | |
1628 | exception_catchpoints_are_fragile) | |
1629 | { | |
1630 | warning_needed = 1; | |
c906108c | 1631 | delete_breakpoint (b); |
c5aa993b JM |
1632 | } |
1633 | break; | |
1634 | } | |
1635 | } | |
c906108c SS |
1636 | |
1637 | if (exception_catchpoints_are_fragile) | |
1638 | exception_support_initialized = 0; | |
1639 | ||
c5aa993b | 1640 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1641 | if (warning_needed && (context != inf_exited)) |
1642 | { | |
53a5351d JM |
1643 | warning ("Exception catchpoints from last run were deleted."); |
1644 | warning ("You must reinsert them explicitly."); | |
c906108c | 1645 | warning_needed = 0; |
c5aa993b | 1646 | } |
c906108c SS |
1647 | } |
1648 | ||
c2c6d25f JM |
1649 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1650 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1651 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1652 | permanent breakpoint. | |
1653 | - When continuing from a location with an ordinary breakpoint, we | |
1654 | actually single step once before calling insert_breakpoints. | |
1655 | - When continuing from a localion with a permanent breakpoint, we | |
1656 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1657 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1658 | |
c2c6d25f | 1659 | enum breakpoint_here |
fba45db2 | 1660 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1661 | { |
075f6582 | 1662 | struct bp_location *bpt; |
c2c6d25f | 1663 | int any_breakpoint_here = 0; |
c906108c | 1664 | |
075f6582 DJ |
1665 | ALL_BP_LOCATIONS (bpt) |
1666 | { | |
1667 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1668 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1669 | continue; | |
1670 | ||
468d015d | 1671 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1672 | || bpt->owner->enable_state == bp_permanent) |
1673 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1674 | { | |
1675 | if (overlay_debugging | |
1676 | && section_is_overlay (bpt->section) | |
1677 | && !section_is_mapped (bpt->section)) | |
1678 | continue; /* unmapped overlay -- can't be a match */ | |
1679 | else if (bpt->owner->enable_state == bp_permanent) | |
1680 | return permanent_breakpoint_here; | |
1681 | else | |
1682 | any_breakpoint_here = 1; | |
1683 | } | |
1684 | } | |
c906108c | 1685 | |
c2c6d25f | 1686 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1687 | } |
1688 | ||
c2c6d25f | 1689 | |
53a5351d JM |
1690 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1691 | but it only returns true if there is actually a breakpoint inserted | |
1692 | at PC. */ | |
c906108c SS |
1693 | |
1694 | int | |
fba45db2 | 1695 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1696 | { |
075f6582 | 1697 | struct bp_location *bpt; |
c906108c | 1698 | |
075f6582 | 1699 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1700 | { |
075f6582 DJ |
1701 | if (bpt->loc_type != bp_loc_software_breakpoint |
1702 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1703 | continue; | |
1704 | ||
1705 | if (bpt->inserted | |
1706 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1707 | { | |
1708 | if (overlay_debugging | |
1709 | && section_is_overlay (bpt->section) | |
1710 | && !section_is_mapped (bpt->section)) | |
1711 | continue; /* unmapped overlay -- can't be a match */ | |
1712 | else | |
1713 | return 1; | |
1714 | } | |
c5aa993b | 1715 | } |
c906108c SS |
1716 | |
1717 | return 0; | |
1718 | } | |
1719 | ||
4fa8626c DJ |
1720 | /* This function returns non-zero iff there is a software breakpoint |
1721 | inserted at PC. */ | |
1722 | ||
1723 | int | |
1724 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1725 | { | |
1726 | struct bp_location *bpt; | |
1727 | int any_breakpoint_here = 0; | |
1728 | ||
1729 | ALL_BP_LOCATIONS (bpt) | |
1730 | { | |
1731 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1732 | continue; | |
1733 | ||
1734 | if ((breakpoint_enabled (bpt->owner) | |
1735 | || bpt->owner->enable_state == bp_permanent) | |
1736 | && bpt->inserted | |
1737 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1738 | { | |
1739 | if (overlay_debugging | |
1740 | && section_is_overlay (bpt->section) | |
1741 | && !section_is_mapped (bpt->section)) | |
1742 | continue; /* unmapped overlay -- can't be a match */ | |
1743 | else | |
1744 | return 1; | |
1745 | } | |
1746 | } | |
1747 | ||
1748 | return 0; | |
1749 | } | |
1750 | ||
53a5351d | 1751 | /* Return nonzero if FRAME is a dummy frame. We can't use |
ae45cd16 | 1752 | DEPRECATED_PC_IN_CALL_DUMMY because figuring out the saved SP would |
ac2adee5 | 1753 | take too much time, at least using frame_register() on the 68k. |
ae45cd16 | 1754 | This means that for this function to work right a port must use the |
53a5351d | 1755 | bp_call_dummy breakpoint. */ |
c906108c SS |
1756 | |
1757 | int | |
bf1e52be | 1758 | deprecated_frame_in_dummy (struct frame_info *frame) |
c906108c | 1759 | { |
c906108c SS |
1760 | struct breakpoint *b; |
1761 | ||
0225421b | 1762 | /* This function is used by two files: get_frame_type(), after first |
07555a72 AC |
1763 | checking that !DEPRECATED_USE_GENERIC_DUMMY_FRAMES; and |
1764 | sparc-tdep.c, which doesn't yet use generic dummy frames anyway. */ | |
1765 | gdb_assert (!DEPRECATED_USE_GENERIC_DUMMY_FRAMES); | |
c5aa993b | 1766 | |
c906108c | 1767 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1768 | { |
1769 | if (b->type == bp_call_dummy | |
818dd999 | 1770 | && frame_id_eq (b->frame_id, get_frame_id (frame)) |
c5aa993b JM |
1771 | /* We need to check the PC as well as the frame on the sparc, |
1772 | for signals.exp in the testsuite. */ | |
bdd78e62 | 1773 | && (get_frame_pc (frame) |
5cab636d | 1774 | >= (b->loc->address |
b1e29e33 | 1775 | - DEPRECATED_SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * DEPRECATED_REGISTER_SIZE)) |
5cab636d | 1776 | && get_frame_pc (frame) <= b->loc->address) |
c5aa993b JM |
1777 | return 1; |
1778 | } | |
c906108c SS |
1779 | return 0; |
1780 | } | |
1781 | ||
075f6582 DJ |
1782 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1783 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1784 | |
1785 | int | |
39f77062 | 1786 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1787 | { |
075f6582 | 1788 | struct bp_location *bpt; |
c906108c SS |
1789 | int thread; |
1790 | ||
39f77062 | 1791 | thread = pid_to_thread_id (ptid); |
c906108c | 1792 | |
075f6582 | 1793 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1794 | { |
075f6582 DJ |
1795 | if (bpt->loc_type != bp_loc_software_breakpoint |
1796 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1797 | continue; | |
1798 | ||
468d015d | 1799 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1800 | || bpt->owner->enable_state == bp_permanent) |
1801 | && bpt->address == pc | |
1802 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1803 | { | |
1804 | if (overlay_debugging | |
1805 | && section_is_overlay (bpt->section) | |
1806 | && !section_is_mapped (bpt->section)) | |
1807 | continue; /* unmapped overlay -- can't be a match */ | |
1808 | else | |
1809 | return 1; | |
1810 | } | |
c5aa993b | 1811 | } |
c906108c SS |
1812 | |
1813 | return 0; | |
1814 | } | |
c906108c | 1815 | \f |
c5aa993b | 1816 | |
c906108c SS |
1817 | /* bpstat stuff. External routines' interfaces are documented |
1818 | in breakpoint.h. */ | |
1819 | ||
1820 | int | |
fba45db2 | 1821 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1822 | { |
1823 | return | |
1824 | (ep->type == bp_catch_load) | |
1825 | || (ep->type == bp_catch_unload) | |
1826 | || (ep->type == bp_catch_fork) | |
1827 | || (ep->type == bp_catch_vfork) | |
1828 | || (ep->type == bp_catch_exec) | |
1829 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1830 | || (ep->type == bp_catch_throw); |
c906108c | 1831 | |
c5aa993b | 1832 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1833 | } |
c5aa993b | 1834 | |
c906108c | 1835 | int |
fba45db2 | 1836 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1837 | { |
1838 | return | |
1839 | (ep->type == bp_catch_load) | |
d85310f7 | 1840 | || (ep->type == bp_catch_unload); |
c906108c SS |
1841 | } |
1842 | ||
1843 | int | |
fba45db2 | 1844 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1845 | { |
1846 | return | |
1847 | (ep->type == bp_catch_catch) | |
d85310f7 | 1848 | || (ep->type == bp_catch_throw); |
c906108c SS |
1849 | } |
1850 | ||
1851 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1852 | Also free any storage that is part of a bpstat. */ | |
1853 | ||
1854 | void | |
fba45db2 | 1855 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1856 | { |
1857 | bpstat p; | |
1858 | bpstat q; | |
1859 | ||
1860 | if (bsp == 0) | |
1861 | return; | |
1862 | p = *bsp; | |
1863 | while (p != NULL) | |
1864 | { | |
1865 | q = p->next; | |
1866 | if (p->old_val != NULL) | |
1867 | value_free (p->old_val); | |
c2b8ed2c | 1868 | free_command_lines (&p->commands); |
b8c9b27d | 1869 | xfree (p); |
c906108c SS |
1870 | p = q; |
1871 | } | |
1872 | *bsp = NULL; | |
1873 | } | |
1874 | ||
1875 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1876 | is part of the bpstat is copied as well. */ | |
1877 | ||
1878 | bpstat | |
fba45db2 | 1879 | bpstat_copy (bpstat bs) |
c906108c SS |
1880 | { |
1881 | bpstat p = NULL; | |
1882 | bpstat tmp; | |
1883 | bpstat retval = NULL; | |
1884 | ||
1885 | if (bs == NULL) | |
1886 | return bs; | |
1887 | ||
1888 | for (; bs != NULL; bs = bs->next) | |
1889 | { | |
1890 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1891 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1892 | if (bs->commands != NULL) |
1893 | tmp->commands = copy_command_lines (bs->commands); | |
1894 | if (bs->old_val != NULL) | |
1895 | tmp->old_val = value_copy (bs->old_val); | |
1896 | ||
c906108c SS |
1897 | if (p == NULL) |
1898 | /* This is the first thing in the chain. */ | |
1899 | retval = tmp; | |
1900 | else | |
1901 | p->next = tmp; | |
1902 | p = tmp; | |
1903 | } | |
1904 | p->next = NULL; | |
1905 | return retval; | |
1906 | } | |
1907 | ||
1908 | /* Find the bpstat associated with this breakpoint */ | |
1909 | ||
1910 | bpstat | |
fba45db2 | 1911 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1912 | { |
c5aa993b JM |
1913 | if (bsp == NULL) |
1914 | return NULL; | |
c906108c | 1915 | |
c5aa993b JM |
1916 | for (; bsp != NULL; bsp = bsp->next) |
1917 | { | |
1918 | if (bsp->breakpoint_at == breakpoint) | |
1919 | return bsp; | |
1920 | } | |
c906108c SS |
1921 | return NULL; |
1922 | } | |
1923 | ||
1924 | /* Find a step_resume breakpoint associated with this bpstat. | |
1925 | (If there are multiple step_resume bp's on the list, this function | |
1926 | will arbitrarily pick one.) | |
1927 | ||
1928 | It is an error to use this function if BPSTAT doesn't contain a | |
1929 | step_resume breakpoint. | |
1930 | ||
1931 | See wait_for_inferior's use of this function. */ | |
1932 | struct breakpoint * | |
fba45db2 | 1933 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1934 | { |
8601f500 MS |
1935 | int current_thread; |
1936 | ||
c906108c SS |
1937 | if (bsp == NULL) |
1938 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1939 | ||
8601f500 MS |
1940 | current_thread = pid_to_thread_id (inferior_ptid); |
1941 | ||
c906108c SS |
1942 | for (; bsp != NULL; bsp = bsp->next) |
1943 | { | |
1944 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1945 | (bsp->breakpoint_at->type == bp_step_resume) && |
1946 | (bsp->breakpoint_at->thread == current_thread || | |
1947 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1948 | return bsp->breakpoint_at; |
c906108c SS |
1949 | } |
1950 | ||
1951 | error ("Internal error (no step_resume breakpoint found)"); | |
1952 | } | |
1953 | ||
1954 | ||
1955 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1956 | at. *BSP upon return is a bpstat which points to the remaining | |
1957 | breakpoints stopped at (but which is not guaranteed to be good for | |
1958 | anything but further calls to bpstat_num). | |
1959 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1960 | ||
1961 | int | |
fba45db2 | 1962 | bpstat_num (bpstat *bsp) |
c906108c SS |
1963 | { |
1964 | struct breakpoint *b; | |
1965 | ||
1966 | if ((*bsp) == NULL) | |
1967 | return 0; /* No more breakpoint values */ | |
1968 | else | |
1969 | { | |
1970 | b = (*bsp)->breakpoint_at; | |
1971 | *bsp = (*bsp)->next; | |
1972 | if (b == NULL) | |
1973 | return -1; /* breakpoint that's been deleted since */ | |
1974 | else | |
c5aa993b | 1975 | return b->number; /* We have its number */ |
c906108c SS |
1976 | } |
1977 | } | |
1978 | ||
1979 | /* Modify BS so that the actions will not be performed. */ | |
1980 | ||
1981 | void | |
fba45db2 | 1982 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1983 | { |
1984 | for (; bs != NULL; bs = bs->next) | |
1985 | { | |
c2b8ed2c | 1986 | free_command_lines (&bs->commands); |
c906108c SS |
1987 | if (bs->old_val != NULL) |
1988 | { | |
1989 | value_free (bs->old_val); | |
1990 | bs->old_val = NULL; | |
1991 | } | |
1992 | } | |
1993 | } | |
1994 | ||
1995 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 1996 | static void |
4efb68b1 | 1997 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
1998 | { |
1999 | executing_breakpoint_commands = 0; | |
2000 | } | |
2001 | ||
2002 | /* Execute all the commands associated with all the breakpoints at this | |
2003 | location. Any of these commands could cause the process to proceed | |
2004 | beyond this point, etc. We look out for such changes by checking | |
2005 | the global "breakpoint_proceeded" after each command. */ | |
2006 | ||
2007 | void | |
fba45db2 | 2008 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2009 | { |
2010 | bpstat bs; | |
2011 | struct cleanup *old_chain; | |
c906108c SS |
2012 | |
2013 | /* Avoid endless recursion if a `source' command is contained | |
2014 | in bs->commands. */ | |
2015 | if (executing_breakpoint_commands) | |
2016 | return; | |
2017 | ||
2018 | executing_breakpoint_commands = 1; | |
2019 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2020 | ||
2021 | top: | |
2022 | /* Note that (as of this writing), our callers all appear to | |
2023 | be passing us the address of global stop_bpstat. And, if | |
2024 | our calls to execute_control_command cause the inferior to | |
2025 | proceed, that global (and hence, *bsp) will change. | |
2026 | ||
2027 | We must be careful to not touch *bsp unless the inferior | |
2028 | has not proceeded. */ | |
2029 | ||
2030 | /* This pointer will iterate over the list of bpstat's. */ | |
2031 | bs = *bsp; | |
2032 | ||
2033 | breakpoint_proceeded = 0; | |
2034 | for (; bs != NULL; bs = bs->next) | |
2035 | { | |
6c50ab1c JB |
2036 | struct command_line *cmd; |
2037 | struct cleanup *this_cmd_tree_chain; | |
2038 | ||
2039 | /* Take ownership of the BSP's command tree, if it has one. | |
2040 | ||
2041 | The command tree could legitimately contain commands like | |
2042 | 'step' and 'next', which call clear_proceed_status, which | |
2043 | frees stop_bpstat's command tree. To make sure this doesn't | |
2044 | free the tree we're executing out from under us, we need to | |
2045 | take ownership of the tree ourselves. Since a given bpstat's | |
2046 | commands are only executed once, we don't need to copy it; we | |
2047 | can clear the pointer in the bpstat, and make sure we free | |
2048 | the tree when we're done. */ | |
c906108c | 2049 | cmd = bs->commands; |
6c50ab1c JB |
2050 | bs->commands = 0; |
2051 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2052 | ||
c906108c SS |
2053 | while (cmd != NULL) |
2054 | { | |
2055 | execute_control_command (cmd); | |
2056 | ||
2057 | if (breakpoint_proceeded) | |
2058 | break; | |
2059 | else | |
2060 | cmd = cmd->next; | |
2061 | } | |
6c50ab1c JB |
2062 | |
2063 | /* We can free this command tree now. */ | |
2064 | do_cleanups (this_cmd_tree_chain); | |
2065 | ||
c906108c SS |
2066 | if (breakpoint_proceeded) |
2067 | /* The inferior is proceeded by the command; bomb out now. | |
2068 | The bpstat chain has been blown away by wait_for_inferior. | |
2069 | But since execution has stopped again, there is a new bpstat | |
2070 | to look at, so start over. */ | |
2071 | goto top; | |
c906108c | 2072 | } |
c2b8ed2c | 2073 | do_cleanups (old_chain); |
c906108c SS |
2074 | } |
2075 | ||
e514a9d6 | 2076 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2077 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2078 | by having it set different print_it values. |
2079 | ||
2080 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2081 | through the bpstat list of things causing this stop, calling the | |
2082 | print_bp_stop_message function on each one. The behavior of the | |
2083 | print_bp_stop_message function depends on the print_it field of | |
2084 | bpstat. If such field so indicates, call this function here. | |
2085 | ||
2086 | Return values from this routine (ultimately used by bpstat_print() | |
2087 | and normal_stop() to decide what to do): | |
2088 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2089 | don't print anything else. | |
2090 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2091 | that something to be followed by a location. | |
2092 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2093 | that something to be followed by a location. | |
2094 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2095 | analysis. */ | |
c906108c | 2096 | |
917317f4 | 2097 | static enum print_stop_action |
fba45db2 | 2098 | print_it_typical (bpstat bs) |
c906108c | 2099 | { |
3b31d625 | 2100 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2101 | struct ui_stream *stb; |
2102 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2103 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2104 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2105 | which has since been deleted. */ | |
e514a9d6 | 2106 | if (bs->breakpoint_at == NULL) |
917317f4 | 2107 | return PRINT_UNKNOWN; |
c906108c | 2108 | |
e514a9d6 | 2109 | switch (bs->breakpoint_at->type) |
c906108c | 2110 | { |
e514a9d6 JM |
2111 | case bp_breakpoint: |
2112 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2113 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2114 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2115 | bs->breakpoint_at->loc->address, | |
76897487 | 2116 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2117 | annotate_breakpoint (bs->breakpoint_at->number); |
2118 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2119 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2120 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2121 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2122 | ui_out_text (uiout, ", "); | |
2123 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2124 | break; |
2125 | ||
2126 | case bp_shlib_event: | |
917317f4 JM |
2127 | /* Did we stop because the user set the stop_on_solib_events |
2128 | variable? (If so, we report this as a generic, "Stopped due | |
2129 | to shlib event" message.) */ | |
e514a9d6 JM |
2130 | printf_filtered ("Stopped due to shared library event\n"); |
2131 | return PRINT_NOTHING; | |
2132 | break; | |
2133 | ||
c4093a6a JM |
2134 | case bp_thread_event: |
2135 | /* Not sure how we will get here. | |
2136 | GDB should not stop for these breakpoints. */ | |
2137 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2138 | return PRINT_NOTHING; | |
2139 | break; | |
2140 | ||
1900040c MS |
2141 | case bp_overlay_event: |
2142 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2143 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2144 | return PRINT_NOTHING; | |
2145 | break; | |
2146 | ||
e514a9d6 | 2147 | case bp_catch_load: |
c906108c SS |
2148 | annotate_catchpoint (bs->breakpoint_at->number); |
2149 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2150 | printf_filtered ("loaded"); |
2151 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2152 | return PRINT_SRC_AND_LOC; | |
2153 | break; | |
2154 | ||
2155 | case bp_catch_unload: | |
2156 | annotate_catchpoint (bs->breakpoint_at->number); | |
2157 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2158 | printf_filtered ("unloaded"); | |
2159 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2160 | return PRINT_SRC_AND_LOC; | |
2161 | break; | |
2162 | ||
2163 | case bp_catch_fork: | |
2164 | annotate_catchpoint (bs->breakpoint_at->number); | |
2165 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2166 | printf_filtered ("forked"); | |
53a5351d JM |
2167 | printf_filtered (" process %d), ", |
2168 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2169 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2170 | break; |
2171 | ||
2172 | case bp_catch_vfork: | |
2173 | annotate_catchpoint (bs->breakpoint_at->number); | |
2174 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2175 | printf_filtered ("vforked"); | |
2176 | printf_filtered (" process %d), ", | |
2177 | bs->breakpoint_at->forked_inferior_pid); | |
2178 | return PRINT_SRC_AND_LOC; | |
2179 | break; | |
2180 | ||
2181 | case bp_catch_exec: | |
c906108c SS |
2182 | annotate_catchpoint (bs->breakpoint_at->number); |
2183 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2184 | bs->breakpoint_at->number, |
2185 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2186 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2187 | break; |
2188 | ||
2189 | case bp_catch_catch: | |
53a5351d JM |
2190 | if (current_exception_event && |
2191 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2192 | { |
2193 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2194 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2195 | bs->breakpoint_at->number); | |
c5aa993b JM |
2196 | printf_filtered ("throw location "); |
2197 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2198 | printf_filtered ("%s:%d", | |
2199 | CURRENT_EXCEPTION_THROW_FILE, | |
2200 | CURRENT_EXCEPTION_THROW_LINE); | |
2201 | else | |
2202 | printf_filtered ("unknown"); | |
2203 | ||
2204 | printf_filtered (", catch location "); | |
2205 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2206 | printf_filtered ("%s:%d", | |
2207 | CURRENT_EXCEPTION_CATCH_FILE, | |
2208 | CURRENT_EXCEPTION_CATCH_LINE); | |
2209 | else | |
2210 | printf_filtered ("unknown"); | |
2211 | ||
2212 | printf_filtered ("\n"); | |
e514a9d6 JM |
2213 | /* don't bother to print location frame info */ |
2214 | return PRINT_SRC_ONLY; | |
c5aa993b | 2215 | } |
c906108c | 2216 | else |
c5aa993b | 2217 | { |
e514a9d6 JM |
2218 | /* really throw, some other bpstat will handle it */ |
2219 | return PRINT_UNKNOWN; | |
c5aa993b | 2220 | } |
e514a9d6 JM |
2221 | break; |
2222 | ||
2223 | case bp_catch_throw: | |
53a5351d JM |
2224 | if (current_exception_event && |
2225 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2226 | { |
2227 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2228 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2229 | bs->breakpoint_at->number); | |
c5aa993b JM |
2230 | printf_filtered ("throw location "); |
2231 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2232 | printf_filtered ("%s:%d", | |
2233 | CURRENT_EXCEPTION_THROW_FILE, | |
2234 | CURRENT_EXCEPTION_THROW_LINE); | |
2235 | else | |
2236 | printf_filtered ("unknown"); | |
2237 | ||
2238 | printf_filtered (", catch location "); | |
2239 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2240 | printf_filtered ("%s:%d", | |
2241 | CURRENT_EXCEPTION_CATCH_FILE, | |
2242 | CURRENT_EXCEPTION_CATCH_LINE); | |
2243 | else | |
2244 | printf_filtered ("unknown"); | |
2245 | ||
2246 | printf_filtered ("\n"); | |
e514a9d6 JM |
2247 | /* don't bother to print location frame info */ |
2248 | return PRINT_SRC_ONLY; | |
c5aa993b | 2249 | } |
c906108c | 2250 | else |
c5aa993b | 2251 | { |
e514a9d6 JM |
2252 | /* really catch, some other bpstat will handle it */ |
2253 | return PRINT_UNKNOWN; | |
c5aa993b | 2254 | } |
e514a9d6 | 2255 | break; |
c906108c | 2256 | |
e514a9d6 JM |
2257 | case bp_watchpoint: |
2258 | case bp_hardware_watchpoint: | |
2259 | if (bs->old_val != NULL) | |
2260 | { | |
2261 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2262 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2263 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2264 | mention (bs->breakpoint_at); |
3b31d625 | 2265 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2266 | ui_out_text (uiout, "\nOld value = "); |
2267 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2268 | ui_out_field_stream (uiout, "old", stb); | |
2269 | ui_out_text (uiout, "\nNew value = "); | |
2270 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2271 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2272 | do_cleanups (ui_out_chain); |
8b93c638 | 2273 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2274 | value_free (bs->old_val); |
2275 | bs->old_val = NULL; | |
2276 | } | |
2277 | /* More than one watchpoint may have been triggered. */ | |
2278 | return PRINT_UNKNOWN; | |
2279 | break; | |
2280 | ||
2281 | case bp_read_watchpoint: | |
9dc5e2a9 | 2282 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2283 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); |
8b93c638 | 2284 | mention (bs->breakpoint_at); |
3b31d625 | 2285 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2286 | ui_out_text (uiout, "\nValue = "); |
2287 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2288 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2289 | do_cleanups (ui_out_chain); |
8b93c638 | 2290 | ui_out_text (uiout, "\n"); |
917317f4 | 2291 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2292 | break; |
2293 | ||
2294 | case bp_access_watchpoint: | |
8b93c638 JM |
2295 | if (bs->old_val != NULL) |
2296 | { | |
2297 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2298 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2299 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2300 | mention (bs->breakpoint_at); |
3b31d625 | 2301 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2302 | ui_out_text (uiout, "\nOld value = "); |
2303 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2304 | ui_out_field_stream (uiout, "old", stb); | |
2305 | value_free (bs->old_val); | |
2306 | bs->old_val = NULL; | |
2307 | ui_out_text (uiout, "\nNew value = "); | |
2308 | } | |
2309 | else | |
2310 | { | |
2311 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2312 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2313 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
3b31d625 | 2314 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2315 | ui_out_text (uiout, "\nValue = "); |
2316 | } | |
2317 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2318 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2319 | do_cleanups (ui_out_chain); |
8b93c638 | 2320 | ui_out_text (uiout, "\n"); |
917317f4 | 2321 | return PRINT_UNKNOWN; |
e514a9d6 | 2322 | break; |
4ce44c66 | 2323 | |
e514a9d6 JM |
2324 | /* Fall through, we don't deal with these types of breakpoints |
2325 | here. */ | |
2326 | ||
11cf8741 | 2327 | case bp_finish: |
9dc5e2a9 | 2328 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2329 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2330 | return PRINT_UNKNOWN; |
2331 | break; | |
2332 | ||
e514a9d6 | 2333 | case bp_until: |
9dc5e2a9 | 2334 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2335 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2336 | return PRINT_UNKNOWN; |
2337 | break; | |
2338 | ||
c2d11a7d | 2339 | case bp_none: |
e514a9d6 JM |
2340 | case bp_longjmp: |
2341 | case bp_longjmp_resume: | |
2342 | case bp_step_resume: | |
2343 | case bp_through_sigtramp: | |
2344 | case bp_watchpoint_scope: | |
2345 | case bp_call_dummy: | |
2346 | default: | |
2347 | return PRINT_UNKNOWN; | |
2348 | } | |
2349 | } | |
2350 | ||
2351 | /* Generic routine for printing messages indicating why we | |
2352 | stopped. The behavior of this function depends on the value | |
2353 | 'print_it' in the bpstat structure. Under some circumstances we | |
2354 | may decide not to print anything here and delegate the task to | |
2355 | normal_stop(). */ | |
2356 | ||
2357 | static enum print_stop_action | |
2358 | print_bp_stop_message (bpstat bs) | |
2359 | { | |
2360 | switch (bs->print_it) | |
2361 | { | |
2362 | case print_it_noop: | |
2363 | /* Nothing should be printed for this bpstat entry. */ | |
2364 | return PRINT_UNKNOWN; | |
2365 | break; | |
2366 | ||
2367 | case print_it_done: | |
2368 | /* We still want to print the frame, but we already printed the | |
2369 | relevant messages. */ | |
2370 | return PRINT_SRC_AND_LOC; | |
2371 | break; | |
2372 | ||
2373 | case print_it_normal: | |
3086aeae DJ |
2374 | /* Normal case. Call the breakpoint's print_it method, or |
2375 | print_it_typical. */ | |
2376 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2377 | && bs->breakpoint_at->ops->print_it != NULL) | |
2378 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2379 | else | |
2380 | return print_it_typical (bs); | |
e514a9d6 | 2381 | break; |
3086aeae | 2382 | |
e514a9d6 | 2383 | default: |
8e65ff28 AC |
2384 | internal_error (__FILE__, __LINE__, |
2385 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2386 | break; |
c906108c | 2387 | } |
c906108c SS |
2388 | } |
2389 | ||
e514a9d6 JM |
2390 | /* Print a message indicating what happened. This is called from |
2391 | normal_stop(). The input to this routine is the head of the bpstat | |
2392 | list - a list of the eventpoints that caused this stop. This | |
2393 | routine calls the generic print routine for printing a message | |
2394 | about reasons for stopping. This will print (for example) the | |
2395 | "Breakpoint n," part of the output. The return value of this | |
2396 | routine is one of: | |
c906108c | 2397 | |
917317f4 JM |
2398 | PRINT_UNKNOWN: Means we printed nothing |
2399 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2400 | code to print the location. An example is |
2401 | "Breakpoint 1, " which should be followed by | |
2402 | the location. | |
917317f4 | 2403 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2404 | to also print the location part of the message. |
2405 | An example is the catch/throw messages, which | |
917317f4 JM |
2406 | don't require a location appended to the end. |
2407 | PRINT_NOTHING: We have done some printing and we don't need any | |
2408 | further info to be printed.*/ | |
c906108c | 2409 | |
917317f4 | 2410 | enum print_stop_action |
fba45db2 | 2411 | bpstat_print (bpstat bs) |
c906108c SS |
2412 | { |
2413 | int val; | |
c5aa993b | 2414 | |
c906108c | 2415 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2416 | (Currently all watchpoints go on the bpstat whether hit or not. |
2417 | That probably could (should) be changed, provided care is taken | |
c906108c | 2418 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2419 | for (; bs; bs = bs->next) |
2420 | { | |
2421 | val = print_bp_stop_message (bs); | |
2422 | if (val == PRINT_SRC_ONLY | |
2423 | || val == PRINT_SRC_AND_LOC | |
2424 | || val == PRINT_NOTHING) | |
2425 | return val; | |
2426 | } | |
c906108c | 2427 | |
e514a9d6 JM |
2428 | /* We reached the end of the chain, or we got a null BS to start |
2429 | with and nothing was printed. */ | |
917317f4 | 2430 | return PRINT_UNKNOWN; |
c906108c SS |
2431 | } |
2432 | ||
2433 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2434 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2435 | The argument is a "struct expression *" that has been cast to char * to | |
2436 | make it pass through catch_errors. */ | |
2437 | ||
2438 | static int | |
4efb68b1 | 2439 | breakpoint_cond_eval (void *exp) |
c906108c | 2440 | { |
278cd55f | 2441 | struct value *mark = value_mark (); |
c5aa993b | 2442 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2443 | value_free_to_mark (mark); |
2444 | return i; | |
2445 | } | |
2446 | ||
2447 | /* Allocate a new bpstat and chain it to the current one. */ | |
2448 | ||
2449 | static bpstat | |
831662b3 | 2450 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2451 | { |
2452 | bpstat bs; | |
2453 | ||
2454 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2455 | cbs->next = bs; | |
2456 | bs->breakpoint_at = b; | |
2457 | /* If the condition is false, etc., don't do the commands. */ | |
2458 | bs->commands = NULL; | |
2459 | bs->old_val = NULL; | |
2460 | bs->print_it = print_it_normal; | |
2461 | return bs; | |
2462 | } | |
2463 | \f | |
2464 | /* Possible return values for watchpoint_check (this can't be an enum | |
2465 | because of check_errors). */ | |
2466 | /* The watchpoint has been deleted. */ | |
2467 | #define WP_DELETED 1 | |
2468 | /* The value has changed. */ | |
2469 | #define WP_VALUE_CHANGED 2 | |
2470 | /* The value has not changed. */ | |
2471 | #define WP_VALUE_NOT_CHANGED 3 | |
2472 | ||
2473 | #define BP_TEMPFLAG 1 | |
2474 | #define BP_HARDWAREFLAG 2 | |
2475 | ||
2476 | /* Check watchpoint condition. */ | |
2477 | ||
2478 | static int | |
4efb68b1 | 2479 | watchpoint_check (void *p) |
c906108c SS |
2480 | { |
2481 | bpstat bs = (bpstat) p; | |
2482 | struct breakpoint *b; | |
2483 | struct frame_info *fr; | |
2484 | int within_current_scope; | |
2485 | ||
2486 | b = bs->breakpoint_at; | |
2487 | ||
2488 | if (b->exp_valid_block == NULL) | |
2489 | within_current_scope = 1; | |
2490 | else | |
2491 | { | |
2492 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2493 | any chance of handling watchpoints on local variables, we'll need |
2494 | the frame chain (so we can determine if we're in scope). */ | |
2495 | reinit_frame_cache (); | |
101dcfbe | 2496 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2497 | within_current_scope = (fr != NULL); |
c12260ac CV |
2498 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2499 | in the function but the stack frame has already been invalidated. | |
2500 | Since we can't rely on the values of local variables after the | |
2501 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2502 | state as `not changed' without further checking. |
2503 | ||
2504 | vinschen/2003-09-04: The former implementation left out the case | |
2505 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2506 | because the current PC is currently in an epilogue. Calling | |
2507 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2508 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2509 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2510 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2511 | if (fr && within_current_scope) |
c906108c SS |
2512 | /* If we end up stopping, the current frame will get selected |
2513 | in normal_stop. So this call to select_frame won't affect | |
2514 | the user. */ | |
0f7d239c | 2515 | select_frame (fr); |
c906108c | 2516 | } |
c5aa993b | 2517 | |
c906108c SS |
2518 | if (within_current_scope) |
2519 | { | |
2520 | /* We use value_{,free_to_}mark because it could be a | |
2521 | *long* time before we return to the command level and | |
c5aa993b JM |
2522 | call free_all_values. We can't call free_all_values because |
2523 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2524 | |
278cd55f AC |
2525 | struct value *mark = value_mark (); |
2526 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2527 | if (!value_equal (b->val, new_val)) |
2528 | { | |
2529 | release_value (new_val); | |
2530 | value_free_to_mark (mark); | |
2531 | bs->old_val = b->val; | |
2532 | b->val = new_val; | |
2533 | /* We will stop here */ | |
2534 | return WP_VALUE_CHANGED; | |
2535 | } | |
2536 | else | |
2537 | { | |
2538 | /* Nothing changed, don't do anything. */ | |
2539 | value_free_to_mark (mark); | |
2540 | /* We won't stop here */ | |
2541 | return WP_VALUE_NOT_CHANGED; | |
2542 | } | |
2543 | } | |
2544 | else | |
2545 | { | |
2546 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2547 | if we temporarily ignored the watchpoint, then when |
2548 | we reenter the block in which it is valid it contains | |
2549 | garbage (in the case of a function, it may have two | |
2550 | garbage values, one before and one after the prologue). | |
2551 | So we can't even detect the first assignment to it and | |
2552 | watch after that (since the garbage may or may not equal | |
2553 | the first value assigned). */ | |
4ce44c66 JM |
2554 | /* We print all the stop information in print_it_typical(), but |
2555 | in this case, by the time we call print_it_typical() this bp | |
2556 | will be deleted already. So we have no choice but print the | |
2557 | information here. */ | |
9dc5e2a9 | 2558 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2559 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2560 | ui_out_text (uiout, "\nWatchpoint "); |
2561 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2562 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2563 | which its expression is valid.\n"); | |
4ce44c66 | 2564 | |
c906108c | 2565 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2566 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2567 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2568 | |
2569 | return WP_DELETED; | |
2570 | } | |
2571 | } | |
2572 | ||
9709f61c DJ |
2573 | /* Get a bpstat associated with having just stopped at address |
2574 | BP_ADDR. */ | |
c906108c SS |
2575 | |
2576 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2577 | don't understand this stop. Result is a chain of bpstat's such that: | |
2578 | ||
c5aa993b | 2579 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2580 | |
c5aa993b | 2581 | if we understand why we stopped, the result is not null. |
c906108c | 2582 | |
c5aa993b JM |
2583 | Each element of the chain refers to a particular breakpoint or |
2584 | watchpoint at which we have stopped. (We may have stopped for | |
2585 | several reasons concurrently.) | |
c906108c | 2586 | |
c5aa993b JM |
2587 | Each element of the chain has valid next, breakpoint_at, |
2588 | commands, FIXME??? fields. */ | |
c906108c SS |
2589 | |
2590 | bpstat | |
fa5281d0 | 2591 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 2592 | { |
52f0bd74 | 2593 | struct breakpoint *b, *temp; |
c906108c SS |
2594 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
2595 | int real_breakpoint = 0; | |
2596 | /* Root of the chain of bpstat's */ | |
2597 | struct bpstats root_bs[1]; | |
2598 | /* Pointer to the last thing in the chain currently. */ | |
2599 | bpstat bs = root_bs; | |
fa5281d0 | 2600 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2601 | |
c906108c | 2602 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2603 | { |
468d015d | 2604 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2605 | continue; |
2606 | ||
2607 | if (b->type != bp_watchpoint | |
2608 | && b->type != bp_hardware_watchpoint | |
2609 | && b->type != bp_read_watchpoint | |
2610 | && b->type != bp_access_watchpoint | |
2611 | && b->type != bp_hardware_breakpoint | |
2612 | && b->type != bp_catch_fork | |
2613 | && b->type != bp_catch_vfork | |
2614 | && b->type != bp_catch_exec | |
2615 | && b->type != bp_catch_catch | |
2616 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2617 | { |
5cab636d | 2618 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2619 | continue; |
2620 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2621 | && section_is_overlay (b->loc->section) |
2622 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2623 | continue; |
2624 | } | |
c906108c | 2625 | |
c02f5703 MS |
2626 | if (b->type == bp_hardware_breakpoint) |
2627 | { | |
9709f61c | 2628 | if (b->loc->address != bp_addr) |
c02f5703 MS |
2629 | continue; |
2630 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2631 | && section_is_overlay (b->loc->section) |
2632 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2633 | continue; |
2634 | } | |
c5aa993b | 2635 | |
c5aa993b JM |
2636 | /* Is this a catchpoint of a load or unload? If so, did we |
2637 | get a load or unload of the specified library? If not, | |
2638 | ignore it. */ | |
2639 | if ((b->type == bp_catch_load) | |
c906108c | 2640 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2641 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2642 | || ((b->dll_pathname != NULL) |
53a5351d | 2643 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2644 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2645 | PIDGET (inferior_ptid))) | |
53a5351d | 2646 | != 0))) |
c906108c | 2647 | #endif |
c5aa993b JM |
2648 | ) |
2649 | continue; | |
2650 | ||
2651 | if ((b->type == bp_catch_unload) | |
c906108c | 2652 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2653 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2654 | || ((b->dll_pathname != NULL) |
53a5351d | 2655 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2656 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2657 | PIDGET (inferior_ptid))) | |
53a5351d | 2658 | != 0))) |
c906108c | 2659 | #endif |
c5aa993b JM |
2660 | ) |
2661 | continue; | |
c906108c | 2662 | |
c5aa993b | 2663 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2664 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2665 | &b->forked_inferior_pid)) | |
c5aa993b | 2666 | continue; |
c906108c | 2667 | |
c5aa993b | 2668 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2669 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2670 | &b->forked_inferior_pid)) | |
c5aa993b | 2671 | continue; |
c906108c | 2672 | |
c5aa993b | 2673 | if ((b->type == bp_catch_exec) |
47932f85 | 2674 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2675 | continue; |
c906108c | 2676 | |
c5aa993b JM |
2677 | if (ep_is_exception_catchpoint (b) && |
2678 | !(current_exception_event = target_get_current_exception_event ())) | |
2679 | continue; | |
c906108c | 2680 | |
c5aa993b JM |
2681 | /* Come here if it's a watchpoint, or if the break address matches */ |
2682 | ||
2683 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2684 | ||
2685 | /* Watchpoints may change this, if not found to have triggered. */ | |
2686 | bs->stop = 1; | |
2687 | bs->print = 1; | |
2688 | ||
53a5351d JM |
2689 | if (b->type == bp_watchpoint || |
2690 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2691 | { |
9ebf4acf AC |
2692 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2693 | b->number); | |
2694 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2695 | int e = catch_errors (watchpoint_check, bs, message, | |
2696 | RETURN_MASK_ALL); | |
2697 | do_cleanups (cleanups); | |
2698 | switch (e) | |
c5aa993b JM |
2699 | { |
2700 | case WP_DELETED: | |
2701 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2702 | /* Actually this is superfluous, because by the time we |
2703 | call print_it_typical() the wp will be already deleted, | |
2704 | and the function will return immediately. */ | |
c5aa993b JM |
2705 | bs->print_it = print_it_done; |
2706 | /* Stop. */ | |
2707 | break; | |
2708 | case WP_VALUE_CHANGED: | |
2709 | /* Stop. */ | |
2710 | ++(b->hit_count); | |
2711 | break; | |
2712 | case WP_VALUE_NOT_CHANGED: | |
2713 | /* Don't stop. */ | |
2714 | bs->print_it = print_it_noop; | |
2715 | bs->stop = 0; | |
c5aa993b JM |
2716 | continue; |
2717 | default: | |
2718 | /* Can't happen. */ | |
2719 | /* FALLTHROUGH */ | |
2720 | case 0: | |
2721 | /* Error from catch_errors. */ | |
2722 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2723 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2724 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2725 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2726 | /* We've already printed what needs to be printed. */ |
2727 | bs->print_it = print_it_done; | |
2728 | ||
2729 | /* Stop. */ | |
2730 | break; | |
2731 | } | |
2732 | } | |
53a5351d JM |
2733 | else if (b->type == bp_read_watchpoint || |
2734 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2735 | { |
2736 | CORE_ADDR addr; | |
278cd55f | 2737 | struct value *v; |
c5aa993b JM |
2738 | int found = 0; |
2739 | ||
2740 | addr = target_stopped_data_address (); | |
2741 | if (addr == 0) | |
2742 | continue; | |
2743 | for (v = b->val_chain; v; v = v->next) | |
2744 | { | |
5c44784c JM |
2745 | if (VALUE_LVAL (v) == lval_memory |
2746 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2747 | { |
2e70b7b9 MS |
2748 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2749 | ||
2750 | if (v == b->val_chain | |
2751 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2752 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2753 | { | |
2754 | CORE_ADDR vaddr; | |
2755 | ||
2756 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2757 | /* Exact match not required. Within range is | |
2758 | sufficient. */ | |
2759 | if (addr >= vaddr && | |
2760 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2761 | found = 1; | |
2762 | } | |
c5aa993b JM |
2763 | } |
2764 | } | |
2765 | if (found) | |
9ebf4acf AC |
2766 | { |
2767 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2768 | b->number); | |
2769 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2770 | int e = catch_errors (watchpoint_check, bs, message, | |
2771 | RETURN_MASK_ALL); | |
2772 | do_cleanups (cleanups); | |
2773 | switch (e) | |
2774 | { | |
2775 | case WP_DELETED: | |
2776 | /* We've already printed what needs to be printed. */ | |
2777 | bs->print_it = print_it_done; | |
2778 | /* Stop. */ | |
2779 | break; | |
2780 | case WP_VALUE_CHANGED: | |
2781 | if (b->type == bp_read_watchpoint) | |
2782 | { | |
2783 | /* Don't stop: read watchpoints shouldn't fire if | |
2784 | the value has changed. This is for targets | |
2785 | which cannot set read-only watchpoints. */ | |
2786 | bs->print_it = print_it_noop; | |
2787 | bs->stop = 0; | |
2788 | continue; | |
2789 | } | |
2790 | ++(b->hit_count); | |
2791 | break; | |
2792 | case WP_VALUE_NOT_CHANGED: | |
2793 | /* Stop. */ | |
2794 | ++(b->hit_count); | |
2795 | break; | |
2796 | default: | |
2797 | /* Can't happen. */ | |
2798 | case 0: | |
2799 | /* Error from catch_errors. */ | |
2800 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2801 | if (b->related_breakpoint) | |
2802 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2803 | b->disposition = disp_del_at_next_stop; | |
2804 | /* We've already printed what needs to be printed. */ | |
2805 | bs->print_it = print_it_done; | |
2806 | break; | |
2807 | } | |
2808 | } | |
53a5351d JM |
2809 | else /* found == 0 */ |
2810 | { | |
2811 | /* This is a case where some watchpoint(s) triggered, | |
2812 | but not at the address of this watchpoint (FOUND | |
2813 | was left zero). So don't print anything for this | |
2814 | watchpoint. */ | |
2815 | bs->print_it = print_it_noop; | |
2816 | bs->stop = 0; | |
2817 | continue; | |
2818 | } | |
c5aa993b JM |
2819 | } |
2820 | else | |
2821 | { | |
2822 | /* By definition, an encountered breakpoint is a triggered | |
2823 | breakpoint. */ | |
2824 | ++(b->hit_count); | |
c906108c | 2825 | |
c5aa993b JM |
2826 | real_breakpoint = 1; |
2827 | } | |
2828 | ||
818dd999 AC |
2829 | if (frame_id_p (b->frame_id) |
2830 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2831 | bs->stop = 0; |
2832 | else | |
2833 | { | |
2834 | int value_is_zero = 0; | |
2835 | ||
2836 | if (b->cond) | |
2837 | { | |
2838 | /* Need to select the frame, with all that implies | |
2839 | so that the conditions will have the right context. */ | |
0f7d239c | 2840 | select_frame (get_current_frame ()); |
c5aa993b JM |
2841 | value_is_zero |
2842 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2843 | "Error in testing breakpoint condition:\n", | |
2844 | RETURN_MASK_ALL); | |
2845 | /* FIXME-someday, should give breakpoint # */ | |
2846 | free_all_values (); | |
2847 | } | |
2848 | if (b->cond && value_is_zero) | |
2849 | { | |
2850 | bs->stop = 0; | |
2851 | /* Don't consider this a hit. */ | |
2852 | --(b->hit_count); | |
2853 | } | |
fa5281d0 DJ |
2854 | else if (b->thread != -1 && b->thread != thread_id) |
2855 | { | |
2856 | bs->stop = 0; | |
2857 | /* Don't consider this a hit. */ | |
2858 | --(b->hit_count); | |
2859 | } | |
c5aa993b JM |
2860 | else if (b->ignore_count > 0) |
2861 | { | |
2862 | b->ignore_count--; | |
5c44784c | 2863 | annotate_ignore_count_change (); |
c5aa993b JM |
2864 | bs->stop = 0; |
2865 | } | |
2866 | else | |
2867 | { | |
2868 | /* We will stop here */ | |
b5de0fa7 EZ |
2869 | if (b->disposition == disp_disable) |
2870 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2871 | if (b->silent) |
2872 | bs->print = 0; | |
552f4abf | 2873 | bs->commands = b->commands; |
c5aa993b | 2874 | if (bs->commands && |
6314a349 AC |
2875 | (strcmp ("silent", bs->commands->line) == 0 |
2876 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
2877 | { |
2878 | bs->commands = bs->commands->next; | |
c906108c | 2879 | bs->print = 0; |
c5aa993b | 2880 | } |
552f4abf | 2881 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2882 | } |
2883 | } | |
2884 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2885 | if (bs->stop == 0 || bs->print == 0) | |
2886 | bs->print_it = print_it_noop; | |
2887 | } | |
c906108c SS |
2888 | |
2889 | bs->next = NULL; /* Terminate the chain */ | |
2890 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2891 | ||
c906108c SS |
2892 | /* The value of a hardware watchpoint hasn't changed, but the |
2893 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2894 | if (bs && !bs->stop && |
c906108c SS |
2895 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2896 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2897 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2898 | { | |
2899 | remove_breakpoints (); | |
2900 | insert_breakpoints (); | |
2901 | } | |
2902 | return bs; | |
2903 | } | |
2904 | \f | |
2905 | /* Tell what to do about this bpstat. */ | |
2906 | struct bpstat_what | |
fba45db2 | 2907 | bpstat_what (bpstat bs) |
c906108c SS |
2908 | { |
2909 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2910 | enum class |
2911 | { | |
2912 | /* This bpstat element has no effect on the main_action. */ | |
2913 | no_effect = 0, | |
2914 | ||
2915 | /* There was a watchpoint, stop but don't print. */ | |
2916 | wp_silent, | |
c906108c | 2917 | |
c5aa993b JM |
2918 | /* There was a watchpoint, stop and print. */ |
2919 | wp_noisy, | |
c906108c | 2920 | |
c5aa993b JM |
2921 | /* There was a breakpoint but we're not stopping. */ |
2922 | bp_nostop, | |
c906108c | 2923 | |
c5aa993b JM |
2924 | /* There was a breakpoint, stop but don't print. */ |
2925 | bp_silent, | |
c906108c | 2926 | |
c5aa993b JM |
2927 | /* There was a breakpoint, stop and print. */ |
2928 | bp_noisy, | |
c906108c | 2929 | |
c5aa993b JM |
2930 | /* We hit the longjmp breakpoint. */ |
2931 | long_jump, | |
c906108c | 2932 | |
c5aa993b JM |
2933 | /* We hit the longjmp_resume breakpoint. */ |
2934 | long_resume, | |
c906108c | 2935 | |
c5aa993b JM |
2936 | /* We hit the step_resume breakpoint. */ |
2937 | step_resume, | |
c906108c | 2938 | |
c5aa993b JM |
2939 | /* We hit the through_sigtramp breakpoint. */ |
2940 | through_sig, | |
c906108c | 2941 | |
c5aa993b JM |
2942 | /* We hit the shared library event breakpoint. */ |
2943 | shlib_event, | |
c906108c | 2944 | |
c5aa993b JM |
2945 | /* We caught a shared library event. */ |
2946 | catch_shlib_event, | |
c906108c | 2947 | |
c5aa993b JM |
2948 | /* This is just used to count how many enums there are. */ |
2949 | class_last | |
c906108c SS |
2950 | }; |
2951 | ||
2952 | /* Here is the table which drives this routine. So that we can | |
2953 | format it pretty, we define some abbreviations for the | |
2954 | enum bpstat_what codes. */ | |
2955 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2956 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2957 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2958 | #define sgl BPSTAT_WHAT_SINGLE | |
2959 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2960 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2961 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2962 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2963 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2964 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2965 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2966 | ||
2967 | /* "Can't happen." Might want to print an error message. | |
2968 | abort() is not out of the question, but chances are GDB is just | |
2969 | a bit confused, not unusable. */ | |
2970 | #define err BPSTAT_WHAT_STOP_NOISY | |
2971 | ||
2972 | /* Given an old action and a class, come up with a new action. */ | |
2973 | /* One interesting property of this table is that wp_silent is the same | |
2974 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2975 | after stopping, the check for whether to step over a breakpoint | |
2976 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2977 | reference to how we stopped. We retain separate wp_silent and |
2978 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2979 | |
2980 | Another possibly interesting property of this table is that | |
2981 | there's a partial ordering, priority-like, of the actions. Once | |
2982 | you've decided that some action is appropriate, you'll never go | |
2983 | back and decide something of a lower priority is better. The | |
2984 | ordering is: | |
2985 | ||
7e73cedf | 2986 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2987 | sgl < clrs shl shlr slr sn sr ss ts |
2988 | slr < err shl shlr sn sr ss ts | |
2989 | clr < clrs err shl shlr sn sr ss ts | |
2990 | clrs < err shl shlr sn sr ss ts | |
2991 | ss < shl shlr sn sr ts | |
2992 | sn < shl shlr sr ts | |
2993 | sr < shl shlr ts | |
2994 | shl < shlr | |
2995 | ts < | |
2996 | shlr < | |
2997 | ||
43ff13b4 JM |
2998 | What I think this means is that we don't need a damned table |
2999 | here. If you just put the rows and columns in the right order, | |
3000 | it'd look awfully regular. We could simply walk the bpstat list | |
3001 | and choose the highest priority action we find, with a little | |
3002 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
3003 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
3004 | is messy anyway). */ | |
c906108c SS |
3005 | |
3006 | /* step_resume entries: a step resume breakpoint overrides another | |
3007 | breakpoint of signal handling (see comment in wait_for_inferior | |
d7bd68ca | 3008 | at first PC_IN_SIGTRAMP where we set the step_resume breakpoint). */ |
c906108c SS |
3009 | /* We handle the through_sigtramp_breakpoint the same way; having both |
3010 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
3011 | ||
3012 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3013 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3014 | { | |
3015 | /* old action */ | |
3016 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
3017 | */ | |
3018 | /*no_effect */ | |
3019 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
3020 | /*wp_silent */ | |
3021 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3022 | /*wp_noisy */ | |
3023 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3024 | /*bp_nostop */ | |
3025 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
3026 | /*bp_silent */ | |
3027 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3028 | /*bp_noisy */ | |
3029 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3030 | /*long_jump */ | |
a48bb0b3 | 3031 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
3032 | /*long_resume */ |
3033 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
3034 | /*step_resume */ | |
3035 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
3036 | /*through_sig */ | |
3037 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
3038 | /*shlib */ | |
3039 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
3040 | /*catch_shlib */ | |
3041 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
3042 | }; | |
c906108c SS |
3043 | |
3044 | #undef kc | |
3045 | #undef ss | |
3046 | #undef sn | |
3047 | #undef sgl | |
3048 | #undef slr | |
3049 | #undef clr | |
3050 | #undef clrs | |
3051 | #undef err | |
3052 | #undef sr | |
3053 | #undef ts | |
3054 | #undef shl | |
3055 | #undef shlr | |
3056 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3057 | struct bpstat_what retval; | |
3058 | ||
3059 | retval.call_dummy = 0; | |
3060 | for (; bs != NULL; bs = bs->next) | |
3061 | { | |
3062 | enum class bs_class = no_effect; | |
3063 | if (bs->breakpoint_at == NULL) | |
3064 | /* I suspect this can happen if it was a momentary breakpoint | |
3065 | which has since been deleted. */ | |
3066 | continue; | |
3067 | switch (bs->breakpoint_at->type) | |
3068 | { | |
3069 | case bp_none: | |
3070 | continue; | |
3071 | ||
3072 | case bp_breakpoint: | |
3073 | case bp_hardware_breakpoint: | |
3074 | case bp_until: | |
3075 | case bp_finish: | |
3076 | if (bs->stop) | |
3077 | { | |
3078 | if (bs->print) | |
3079 | bs_class = bp_noisy; | |
3080 | else | |
3081 | bs_class = bp_silent; | |
3082 | } | |
3083 | else | |
3084 | bs_class = bp_nostop; | |
3085 | break; | |
3086 | case bp_watchpoint: | |
3087 | case bp_hardware_watchpoint: | |
3088 | case bp_read_watchpoint: | |
3089 | case bp_access_watchpoint: | |
3090 | if (bs->stop) | |
3091 | { | |
3092 | if (bs->print) | |
3093 | bs_class = wp_noisy; | |
3094 | else | |
3095 | bs_class = wp_silent; | |
3096 | } | |
3097 | else | |
53a5351d JM |
3098 | /* There was a watchpoint, but we're not stopping. |
3099 | This requires no further action. */ | |
c906108c SS |
3100 | bs_class = no_effect; |
3101 | break; | |
3102 | case bp_longjmp: | |
3103 | bs_class = long_jump; | |
3104 | break; | |
3105 | case bp_longjmp_resume: | |
3106 | bs_class = long_resume; | |
3107 | break; | |
3108 | case bp_step_resume: | |
3109 | if (bs->stop) | |
3110 | { | |
3111 | bs_class = step_resume; | |
3112 | } | |
3113 | else | |
3114 | /* It is for the wrong frame. */ | |
3115 | bs_class = bp_nostop; | |
3116 | break; | |
3117 | case bp_through_sigtramp: | |
3118 | bs_class = through_sig; | |
3119 | break; | |
3120 | case bp_watchpoint_scope: | |
3121 | bs_class = bp_nostop; | |
3122 | break; | |
c5aa993b JM |
3123 | case bp_shlib_event: |
3124 | bs_class = shlib_event; | |
3125 | break; | |
c4093a6a | 3126 | case bp_thread_event: |
1900040c | 3127 | case bp_overlay_event: |
c4093a6a JM |
3128 | bs_class = bp_nostop; |
3129 | break; | |
c5aa993b JM |
3130 | case bp_catch_load: |
3131 | case bp_catch_unload: | |
3132 | /* Only if this catchpoint triggered should we cause the | |
3133 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3134 | catchpoint. */ | |
3135 | if (bs->stop) | |
3136 | bs_class = catch_shlib_event; | |
3137 | else | |
3138 | bs_class = no_effect; | |
3139 | break; | |
3140 | case bp_catch_fork: | |
3141 | case bp_catch_vfork: | |
3142 | case bp_catch_exec: | |
3143 | if (bs->stop) | |
3144 | { | |
3145 | if (bs->print) | |
3146 | bs_class = bp_noisy; | |
3147 | else | |
3148 | bs_class = bp_silent; | |
3149 | } | |
3150 | else | |
53a5351d JM |
3151 | /* There was a catchpoint, but we're not stopping. |
3152 | This requires no further action. */ | |
c5aa993b JM |
3153 | bs_class = no_effect; |
3154 | break; | |
3155 | case bp_catch_catch: | |
3156 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3157 | bs_class = bp_nostop; | |
3158 | else if (bs->stop) | |
3159 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3160 | break; | |
3161 | case bp_catch_throw: | |
3162 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3163 | bs_class = bp_nostop; | |
3164 | else if (bs->stop) | |
3165 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3166 | break; |
c906108c | 3167 | case bp_call_dummy: |
53a5351d JM |
3168 | /* Make sure the action is stop (silent or noisy), |
3169 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3170 | bs_class = bp_silent; |
3171 | retval.call_dummy = 1; | |
3172 | break; | |
3173 | } | |
c5aa993b | 3174 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3175 | } |
3176 | retval.main_action = current_action; | |
3177 | return retval; | |
3178 | } | |
3179 | ||
3180 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3181 | without hardware support). This isn't related to a specific bpstat, | |
3182 | just to things like whether watchpoints are set. */ | |
3183 | ||
c5aa993b | 3184 | int |
fba45db2 | 3185 | bpstat_should_step (void) |
c906108c SS |
3186 | { |
3187 | struct breakpoint *b; | |
3188 | ALL_BREAKPOINTS (b) | |
468d015d | 3189 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3190 | return 1; |
c906108c SS |
3191 | return 0; |
3192 | } | |
3193 | ||
3194 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3195 | int | |
fba45db2 | 3196 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3197 | { |
075f6582 DJ |
3198 | struct bp_location *bpt; |
3199 | ALL_BP_LOCATIONS (bpt) | |
468d015d | 3200 | if (breakpoint_enabled (bpt->owner) |
075f6582 DJ |
3201 | && bpt->inserted |
3202 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3203 | return 1; |
c906108c SS |
3204 | return 0; |
3205 | } | |
c906108c | 3206 | \f |
c5aa993b | 3207 | |
c906108c SS |
3208 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3209 | function returns another bpstat which contains only the catchpoints | |
3210 | on that first list, if any. */ | |
3211 | void | |
fba45db2 | 3212 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3213 | { |
3214 | struct bpstats root_bs[1]; | |
3215 | bpstat bs = root_bs; | |
3216 | struct breakpoint *ep; | |
3217 | char *dll_pathname; | |
3218 | ||
c906108c SS |
3219 | bpstat_clear (cp_list); |
3220 | root_bs->next = NULL; | |
c5aa993b JM |
3221 | |
3222 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3223 | { |
3224 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3225 | ep = ep_list->breakpoint_at; | |
3226 | if (ep == NULL) | |
c5aa993b JM |
3227 | break; |
3228 | if ((ep->type != bp_catch_load) && | |
3229 | (ep->type != bp_catch_unload) && | |
3230 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3231 | (ep->type != bp_catch_throw)) |
3232 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3233 | continue; |
3234 | ||
c906108c SS |
3235 | /* Yes; add it to the list. */ |
3236 | bs = bpstat_alloc (ep, bs); | |
3237 | *bs = *ep_list; | |
3238 | bs->next = NULL; | |
3239 | bs = root_bs->next; | |
c5aa993b | 3240 | |
c906108c SS |
3241 | #if defined(SOLIB_ADD) |
3242 | /* Also, for each triggered catchpoint, tag it with the name of | |
3243 | the library that caused this trigger. (We copy the name now, | |
3244 | because it's only guaranteed to be available NOW, when the | |
3245 | catchpoint triggers. Clients who may wish to know the name | |
3246 | later must get it from the catchpoint itself.) */ | |
3247 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3248 | xfree (ep->triggered_dll_pathname); |
c906108c | 3249 | if (ep->type == bp_catch_load) |
39f77062 KB |
3250 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3251 | PIDGET (inferior_ptid)); | |
c906108c | 3252 | else |
39f77062 KB |
3253 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3254 | PIDGET (inferior_ptid)); | |
c906108c SS |
3255 | #else |
3256 | dll_pathname = NULL; | |
3257 | #endif | |
3258 | if (dll_pathname) | |
3259 | { | |
53a5351d JM |
3260 | ep->triggered_dll_pathname = (char *) |
3261 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3262 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3263 | } | |
3264 | else | |
3265 | ep->triggered_dll_pathname = NULL; | |
3266 | } | |
c5aa993b | 3267 | |
c906108c SS |
3268 | *cp_list = bs; |
3269 | } | |
3270 | ||
c4093a6a | 3271 | /* Print B to gdb_stdout. */ |
c906108c | 3272 | static void |
c4093a6a JM |
3273 | print_one_breakpoint (struct breakpoint *b, |
3274 | CORE_ADDR *last_addr) | |
c906108c | 3275 | { |
52f0bd74 AC |
3276 | struct command_line *l; |
3277 | struct symbol *sym; | |
c4093a6a JM |
3278 | struct ep_type_description |
3279 | { | |
3280 | enum bptype type; | |
3281 | char *description; | |
3282 | }; | |
3283 | static struct ep_type_description bptypes[] = | |
c906108c | 3284 | { |
c5aa993b JM |
3285 | {bp_none, "?deleted?"}, |
3286 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3287 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3288 | {bp_until, "until"}, |
3289 | {bp_finish, "finish"}, | |
3290 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3291 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3292 | {bp_read_watchpoint, "read watchpoint"}, |
3293 | {bp_access_watchpoint, "acc watchpoint"}, | |
3294 | {bp_longjmp, "longjmp"}, | |
3295 | {bp_longjmp_resume, "longjmp resume"}, | |
3296 | {bp_step_resume, "step resume"}, | |
3297 | {bp_through_sigtramp, "sigtramp"}, | |
3298 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3299 | {bp_call_dummy, "call dummy"}, | |
3300 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3301 | {bp_thread_event, "thread events"}, |
1900040c | 3302 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3303 | {bp_catch_load, "catch load"}, |
3304 | {bp_catch_unload, "catch unload"}, | |
3305 | {bp_catch_fork, "catch fork"}, | |
3306 | {bp_catch_vfork, "catch vfork"}, | |
3307 | {bp_catch_exec, "catch exec"}, | |
3308 | {bp_catch_catch, "catch catch"}, | |
3309 | {bp_catch_throw, "catch throw"} | |
3310 | }; | |
c4093a6a | 3311 | |
c5aa993b JM |
3312 | static char *bpdisps[] = |
3313 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3314 | static char bpenables[] = "nynny"; |
c906108c | 3315 | char wrap_indent[80]; |
8b93c638 JM |
3316 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3317 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3318 | struct cleanup *bkpt_chain; |
c906108c | 3319 | |
c4093a6a | 3320 | annotate_record (); |
3b31d625 | 3321 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3322 | |
3323 | /* 1 */ | |
3324 | annotate_field (0); | |
8b93c638 | 3325 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3326 | |
3327 | /* 2 */ | |
3328 | annotate_field (1); | |
3329 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3330 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3331 | internal_error (__FILE__, __LINE__, |
3332 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3333 | (int) b->type); |
8b93c638 | 3334 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3335 | |
3336 | /* 3 */ | |
3337 | annotate_field (2); | |
8b93c638 | 3338 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3339 | |
3340 | /* 4 */ | |
3341 | annotate_field (3); | |
b5de0fa7 | 3342 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3343 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3344 | |
3345 | /* 5 and 6 */ | |
3346 | strcpy (wrap_indent, " "); | |
3347 | if (addressprint) | |
75ac9d7b MS |
3348 | { |
3349 | if (TARGET_ADDR_BIT <= 32) | |
3350 | strcat (wrap_indent, " "); | |
3351 | else | |
3352 | strcat (wrap_indent, " "); | |
3353 | } | |
c906108c | 3354 | |
3086aeae DJ |
3355 | if (b->ops != NULL && b->ops->print_one != NULL) |
3356 | b->ops->print_one (b, last_addr); | |
3357 | else | |
3358 | switch (b->type) | |
3359 | { | |
3360 | case bp_none: | |
3361 | internal_error (__FILE__, __LINE__, | |
3362 | "print_one_breakpoint: bp_none encountered\n"); | |
3363 | break; | |
c906108c | 3364 | |
3086aeae DJ |
3365 | case bp_watchpoint: |
3366 | case bp_hardware_watchpoint: | |
3367 | case bp_read_watchpoint: | |
3368 | case bp_access_watchpoint: | |
3369 | /* Field 4, the address, is omitted (which makes the columns | |
3370 | not line up too nicely with the headers, but the effect | |
3371 | is relatively readable). */ | |
3372 | if (addressprint) | |
3373 | ui_out_field_skip (uiout, "addr"); | |
3374 | annotate_field (5); | |
3375 | print_expression (b->exp, stb->stream); | |
3376 | ui_out_field_stream (uiout, "what", stb); | |
3377 | break; | |
3378 | ||
3379 | case bp_catch_load: | |
3380 | case bp_catch_unload: | |
3381 | /* Field 4, the address, is omitted (which makes the columns | |
3382 | not line up too nicely with the headers, but the effect | |
3383 | is relatively readable). */ | |
3384 | if (addressprint) | |
3385 | ui_out_field_skip (uiout, "addr"); | |
3386 | annotate_field (5); | |
3387 | if (b->dll_pathname == NULL) | |
3388 | { | |
3389 | ui_out_field_string (uiout, "what", "<any library>"); | |
3390 | ui_out_spaces (uiout, 1); | |
3391 | } | |
3392 | else | |
3393 | { | |
3394 | ui_out_text (uiout, "library \""); | |
3395 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3396 | ui_out_text (uiout, "\" "); | |
3397 | } | |
3398 | break; | |
3399 | ||
3400 | case bp_catch_fork: | |
3401 | case bp_catch_vfork: | |
3402 | /* Field 4, the address, is omitted (which makes the columns | |
3403 | not line up too nicely with the headers, but the effect | |
3404 | is relatively readable). */ | |
3405 | if (addressprint) | |
3406 | ui_out_field_skip (uiout, "addr"); | |
3407 | annotate_field (5); | |
3408 | if (b->forked_inferior_pid != 0) | |
3409 | { | |
3410 | ui_out_text (uiout, "process "); | |
3411 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3412 | ui_out_spaces (uiout, 1); | |
3413 | } | |
3414 | ||
3415 | case bp_catch_exec: | |
3416 | /* Field 4, the address, is omitted (which makes the columns | |
3417 | not line up too nicely with the headers, but the effect | |
3418 | is relatively readable). */ | |
3419 | if (addressprint) | |
3420 | ui_out_field_skip (uiout, "addr"); | |
3421 | annotate_field (5); | |
3422 | if (b->exec_pathname != NULL) | |
3423 | { | |
3424 | ui_out_text (uiout, "program \""); | |
3425 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3426 | ui_out_text (uiout, "\" "); | |
3427 | } | |
3428 | break; | |
3429 | ||
3430 | case bp_catch_catch: | |
3431 | /* Field 4, the address, is omitted (which makes the columns | |
3432 | not line up too nicely with the headers, but the effect | |
3433 | is relatively readable). */ | |
3434 | if (addressprint) | |
3435 | ui_out_field_skip (uiout, "addr"); | |
3436 | annotate_field (5); | |
3437 | ui_out_field_string (uiout, "what", "exception catch"); | |
3438 | ui_out_spaces (uiout, 1); | |
3439 | break; | |
3440 | ||
3441 | case bp_catch_throw: | |
3442 | /* Field 4, the address, is omitted (which makes the columns | |
3443 | not line up too nicely with the headers, but the effect | |
3444 | is relatively readable). */ | |
3445 | if (addressprint) | |
3446 | ui_out_field_skip (uiout, "addr"); | |
3447 | annotate_field (5); | |
3448 | ui_out_field_string (uiout, "what", "exception throw"); | |
3449 | ui_out_spaces (uiout, 1); | |
3450 | break; | |
3451 | ||
3452 | case bp_breakpoint: | |
3453 | case bp_hardware_breakpoint: | |
3454 | case bp_until: | |
3455 | case bp_finish: | |
3456 | case bp_longjmp: | |
3457 | case bp_longjmp_resume: | |
3458 | case bp_step_resume: | |
3459 | case bp_through_sigtramp: | |
3460 | case bp_watchpoint_scope: | |
3461 | case bp_call_dummy: | |
3462 | case bp_shlib_event: | |
3463 | case bp_thread_event: | |
3464 | case bp_overlay_event: | |
3465 | if (addressprint) | |
3466 | { | |
3467 | annotate_field (4); | |
5cab636d | 3468 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
3469 | } |
3470 | annotate_field (5); | |
5cab636d | 3471 | *last_addr = b->loc->address; |
3086aeae DJ |
3472 | if (b->source_file) |
3473 | { | |
cf3a9e5b | 3474 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3475 | if (sym) |
3476 | { | |
3477 | ui_out_text (uiout, "in "); | |
3478 | ui_out_field_string (uiout, "func", | |
3479 | SYMBOL_PRINT_NAME (sym)); | |
3480 | ui_out_wrap_hint (uiout, wrap_indent); | |
3481 | ui_out_text (uiout, " at "); | |
3482 | } | |
3483 | ui_out_field_string (uiout, "file", b->source_file); | |
3484 | ui_out_text (uiout, ":"); | |
3485 | ui_out_field_int (uiout, "line", b->line_number); | |
3486 | } | |
3487 | else | |
3488 | { | |
5cab636d | 3489 | print_address_symbolic (b->loc->address, stb->stream, demangle, ""); |
3086aeae DJ |
3490 | ui_out_field_stream (uiout, "at", stb); |
3491 | } | |
3492 | break; | |
3493 | } | |
c906108c | 3494 | |
c4093a6a JM |
3495 | if (b->thread != -1) |
3496 | { | |
8b93c638 JM |
3497 | /* FIXME: This seems to be redundant and lost here; see the |
3498 | "stop only in" line a little further down. */ | |
3499 | ui_out_text (uiout, " thread "); | |
3500 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3501 | } |
3502 | ||
8b93c638 | 3503 | ui_out_text (uiout, "\n"); |
c4093a6a | 3504 | |
818dd999 | 3505 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3506 | { |
3507 | annotate_field (6); | |
8b93c638 | 3508 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3509 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3510 | the frame ID. */ | |
d0a55772 | 3511 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3512 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3513 | } |
3514 | ||
3515 | if (b->cond) | |
3516 | { | |
3517 | annotate_field (7); | |
8b93c638 JM |
3518 | ui_out_text (uiout, "\tstop only if "); |
3519 | print_expression (b->cond, stb->stream); | |
3520 | ui_out_field_stream (uiout, "cond", stb); | |
3521 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3522 | } |
3523 | ||
3524 | if (b->thread != -1) | |
3525 | { | |
3526 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3527 | ui_out_text (uiout, "\tstop only in thread "); |
3528 | ui_out_field_int (uiout, "thread", b->thread); | |
3529 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3530 | } |
3531 | ||
3532 | if (show_breakpoint_hit_counts && b->hit_count) | |
3533 | { | |
3534 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3535 | if (ep_is_catchpoint (b)) |
3536 | ui_out_text (uiout, "\tcatchpoint"); | |
3537 | else | |
3538 | ui_out_text (uiout, "\tbreakpoint"); | |
3539 | ui_out_text (uiout, " already hit "); | |
3540 | ui_out_field_int (uiout, "times", b->hit_count); | |
3541 | if (b->hit_count == 1) | |
3542 | ui_out_text (uiout, " time\n"); | |
3543 | else | |
3544 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3545 | } |
3546 | ||
fb40c209 AC |
3547 | /* Output the count also if it is zero, but only if this is |
3548 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3549 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3550 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3551 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3552 | |
c4093a6a JM |
3553 | if (b->ignore_count) |
3554 | { | |
3555 | annotate_field (8); | |
8b93c638 JM |
3556 | ui_out_text (uiout, "\tignore next "); |
3557 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3558 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3559 | } |
3560 | ||
3561 | if ((l = b->commands)) | |
3562 | { | |
3b31d625 EZ |
3563 | struct cleanup *script_chain; |
3564 | ||
c4093a6a | 3565 | annotate_field (9); |
3b31d625 | 3566 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3567 | print_command_lines (uiout, l, 4); |
3b31d625 | 3568 | do_cleanups (script_chain); |
c4093a6a | 3569 | } |
3b31d625 | 3570 | do_cleanups (bkpt_chain); |
8b93c638 | 3571 | do_cleanups (old_chain); |
c4093a6a | 3572 | } |
c5aa993b | 3573 | |
c4093a6a JM |
3574 | struct captured_breakpoint_query_args |
3575 | { | |
3576 | int bnum; | |
3577 | }; | |
c5aa993b | 3578 | |
c4093a6a | 3579 | static int |
2b65245e | 3580 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3581 | { |
3582 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3583 | struct breakpoint *b; |
c4093a6a JM |
3584 | CORE_ADDR dummy_addr = 0; |
3585 | ALL_BREAKPOINTS (b) | |
3586 | { | |
3587 | if (args->bnum == b->number) | |
c5aa993b | 3588 | { |
c4093a6a JM |
3589 | print_one_breakpoint (b, &dummy_addr); |
3590 | return GDB_RC_OK; | |
c5aa993b | 3591 | } |
c4093a6a JM |
3592 | } |
3593 | return GDB_RC_NONE; | |
3594 | } | |
c5aa993b | 3595 | |
c4093a6a | 3596 | enum gdb_rc |
2b65245e | 3597 | gdb_breakpoint_query (struct ui_out *uiout, int bnum) |
c4093a6a JM |
3598 | { |
3599 | struct captured_breakpoint_query_args args; | |
3600 | args.bnum = bnum; | |
3601 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3602 | an error. */ | |
2b65245e AC |
3603 | return catch_exceptions (uiout, do_captured_breakpoint_query, &args, |
3604 | NULL, RETURN_MASK_ALL); | |
c4093a6a | 3605 | } |
c5aa993b | 3606 | |
7f3b0473 AC |
3607 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3608 | catchpoints, et.al.). */ | |
3609 | ||
3610 | static int | |
3611 | user_settable_breakpoint (const struct breakpoint *b) | |
3612 | { | |
3613 | return (b->type == bp_breakpoint | |
3614 | || b->type == bp_catch_load | |
3615 | || b->type == bp_catch_unload | |
3616 | || b->type == bp_catch_fork | |
3617 | || b->type == bp_catch_vfork | |
3618 | || b->type == bp_catch_exec | |
3619 | || b->type == bp_catch_catch | |
3620 | || b->type == bp_catch_throw | |
3621 | || b->type == bp_hardware_breakpoint | |
3622 | || b->type == bp_watchpoint | |
3623 | || b->type == bp_read_watchpoint | |
3624 | || b->type == bp_access_watchpoint | |
3625 | || b->type == bp_hardware_watchpoint); | |
3626 | } | |
3627 | ||
3628 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3629 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3630 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3631 | |
c4093a6a | 3632 | static void |
fba45db2 | 3633 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3634 | { |
52f0bd74 | 3635 | struct breakpoint *b; |
c4093a6a | 3636 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3637 | int nr_printable_breakpoints; |
3b31d625 | 3638 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3639 | |
7f3b0473 AC |
3640 | /* Compute the number of rows in the table. */ |
3641 | nr_printable_breakpoints = 0; | |
3642 | ALL_BREAKPOINTS (b) | |
3643 | if (bnum == -1 | |
3644 | || bnum == b->number) | |
3645 | { | |
3646 | if (allflag || user_settable_breakpoint (b)) | |
3647 | nr_printable_breakpoints++; | |
3648 | } | |
3649 | ||
8b93c638 | 3650 | if (addressprint) |
3b31d625 EZ |
3651 | bkpttbl_chain |
3652 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3653 | "BreakpointTable"); | |
8b93c638 | 3654 | else |
3b31d625 EZ |
3655 | bkpttbl_chain |
3656 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3657 | "BreakpointTable"); | |
8b93c638 | 3658 | |
7f3b0473 | 3659 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3660 | annotate_breakpoints_headers (); |
3661 | if (nr_printable_breakpoints > 0) | |
3662 | annotate_field (0); | |
3663 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3664 | if (nr_printable_breakpoints > 0) | |
3665 | annotate_field (1); | |
3666 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3667 | if (nr_printable_breakpoints > 0) | |
3668 | annotate_field (2); | |
3669 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3670 | if (nr_printable_breakpoints > 0) | |
3671 | annotate_field (3); | |
3672 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3673 | if (addressprint) | |
7f3b0473 | 3674 | { |
d7faa9e7 AC |
3675 | if (nr_printable_breakpoints > 0) |
3676 | annotate_field (4); | |
7f3b0473 | 3677 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3678 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3679 | else |
b25959ec | 3680 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3681 | } |
d7faa9e7 AC |
3682 | if (nr_printable_breakpoints > 0) |
3683 | annotate_field (5); | |
3684 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3685 | ui_out_table_body (uiout); | |
3686 | if (nr_printable_breakpoints > 0) | |
3687 | annotate_breakpoints_table (); | |
7f3b0473 | 3688 | |
c4093a6a JM |
3689 | ALL_BREAKPOINTS (b) |
3690 | if (bnum == -1 | |
3691 | || bnum == b->number) | |
3692 | { | |
3693 | /* We only print out user settable breakpoints unless the | |
3694 | allflag is set. */ | |
7f3b0473 AC |
3695 | if (allflag || user_settable_breakpoint (b)) |
3696 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3697 | } |
3698 | ||
3b31d625 | 3699 | do_cleanups (bkpttbl_chain); |
698384cd | 3700 | |
7f3b0473 | 3701 | if (nr_printable_breakpoints == 0) |
c906108c | 3702 | { |
8b93c638 JM |
3703 | if (bnum == -1) |
3704 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3705 | else | |
3706 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3707 | bnum); | |
c906108c SS |
3708 | } |
3709 | else | |
c4093a6a JM |
3710 | { |
3711 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3712 | that a comparison of an unsigned with -1 is always false. */ | |
3713 | if (last_addr != (CORE_ADDR) -1) | |
3714 | set_next_address (last_addr); | |
3715 | } | |
c906108c | 3716 | |
c4093a6a JM |
3717 | /* FIXME? Should this be moved up so that it is only called when |
3718 | there have been breakpoints? */ | |
c906108c SS |
3719 | annotate_breakpoints_table_end (); |
3720 | } | |
3721 | ||
c906108c | 3722 | static void |
fba45db2 | 3723 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3724 | { |
3725 | int bnum = -1; | |
3726 | ||
3727 | if (bnum_exp) | |
bb518678 | 3728 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3729 | |
3730 | breakpoint_1 (bnum, 0); | |
3731 | } | |
3732 | ||
7a292a7a | 3733 | static void |
fba45db2 | 3734 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3735 | { |
3736 | int bnum = -1; | |
3737 | ||
3738 | if (bnum_exp) | |
bb518678 | 3739 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3740 | |
3741 | breakpoint_1 (bnum, 1); | |
3742 | } | |
3743 | ||
c906108c SS |
3744 | /* Print a message describing any breakpoints set at PC. */ |
3745 | ||
3746 | static void | |
fba45db2 | 3747 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c | 3748 | { |
52f0bd74 AC |
3749 | int others = 0; |
3750 | struct breakpoint *b; | |
c906108c SS |
3751 | |
3752 | ALL_BREAKPOINTS (b) | |
5cab636d | 3753 | if (b->loc->address == pc) /* address match / overlay match */ |
cf3a9e5b | 3754 | if (!overlay_debugging || b->loc->section == section) |
9f04af04 | 3755 | others++; |
c906108c SS |
3756 | if (others > 0) |
3757 | { | |
3758 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3759 | ALL_BREAKPOINTS (b) | |
5cab636d | 3760 | if (b->loc->address == pc) /* address match / overlay match */ |
cf3a9e5b | 3761 | if (!overlay_debugging || b->loc->section == section) |
9f04af04 MS |
3762 | { |
3763 | others--; | |
3764 | printf_filtered ("%d%s%s ", | |
3765 | b->number, | |
3766 | ((b->enable_state == bp_disabled || | |
3767 | b->enable_state == bp_shlib_disabled || | |
3768 | b->enable_state == bp_call_disabled) | |
3769 | ? " (disabled)" | |
3770 | : b->enable_state == bp_permanent | |
3771 | ? " (permanent)" | |
3772 | : ""), | |
3773 | (others > 1) ? "," | |
3774 | : ((others == 1) ? " and" : "")); | |
3775 | } | |
c906108c SS |
3776 | printf_filtered ("also set at pc "); |
3777 | print_address_numeric (pc, 1, gdb_stdout); | |
3778 | printf_filtered (".\n"); | |
3779 | } | |
3780 | } | |
3781 | \f | |
3782 | /* Set the default place to put a breakpoint | |
3783 | for the `break' command with no arguments. */ | |
3784 | ||
3785 | void | |
fba45db2 KB |
3786 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3787 | int line) | |
c906108c SS |
3788 | { |
3789 | default_breakpoint_valid = valid; | |
3790 | default_breakpoint_address = addr; | |
3791 | default_breakpoint_symtab = symtab; | |
3792 | default_breakpoint_line = line; | |
3793 | } | |
3794 | ||
e4f237da KB |
3795 | /* Return true iff it is meaningful to use the address member of |
3796 | BPT. For some breakpoint types, the address member is irrelevant | |
3797 | and it makes no sense to attempt to compare it to other addresses | |
3798 | (or use it for any other purpose either). | |
3799 | ||
3800 | More specifically, each of the following breakpoint types will always | |
3801 | have a zero valued address and we don't want check_duplicates() to mark | |
3802 | breakpoints of any of these types to be a duplicate of an actual | |
3803 | breakpoint at address zero: | |
3804 | ||
3805 | bp_watchpoint | |
3806 | bp_hardware_watchpoint | |
3807 | bp_read_watchpoint | |
3808 | bp_access_watchpoint | |
3809 | bp_catch_exec | |
3810 | bp_longjmp_resume | |
3811 | bp_catch_fork | |
3812 | bp_catch_vork */ | |
3813 | ||
3814 | static int | |
3815 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3816 | { | |
3817 | enum bptype type = bpt->type; | |
3818 | ||
3819 | return (type != bp_watchpoint | |
3820 | && type != bp_hardware_watchpoint | |
3821 | && type != bp_read_watchpoint | |
3822 | && type != bp_access_watchpoint | |
3823 | && type != bp_catch_exec | |
3824 | && type != bp_longjmp_resume | |
3825 | && type != bp_catch_fork | |
3826 | && type != bp_catch_vfork); | |
3827 | } | |
3828 | ||
9f60f21b | 3829 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3830 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3831 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3832 | If we have a permanent breakpoint at the same place as BPT, make |
3833 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3834 | |
3835 | static void | |
9f60f21b | 3836 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3837 | { |
075f6582 | 3838 | struct bp_location *b; |
52f0bd74 | 3839 | int count = 0; |
075f6582 | 3840 | struct bp_location *perm_bp = 0; |
5cab636d | 3841 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 3842 | asection *section = bpt->loc->section; |
c906108c | 3843 | |
e4f237da | 3844 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3845 | return; |
3846 | ||
075f6582 DJ |
3847 | ALL_BP_LOCATIONS (b) |
3848 | if (b->owner->enable_state != bp_disabled | |
3849 | && b->owner->enable_state != bp_shlib_disabled | |
3850 | && b->owner->enable_state != bp_call_disabled | |
3851 | && b->address == address /* address / overlay match */ | |
3852 | && (!overlay_debugging || b->section == section) | |
3853 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3854 | { |
c2c6d25f | 3855 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3856 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3857 | { |
3858 | perm_bp = b; | |
3859 | break; | |
3860 | } | |
3861 | ||
c5aa993b | 3862 | count++; |
075f6582 | 3863 | b->duplicate = count > 1; |
c5aa993b | 3864 | } |
c2c6d25f JM |
3865 | |
3866 | /* If we found a permanent breakpoint at this address, go over the | |
3867 | list again and declare all the other breakpoints there to be the | |
3868 | duplicates. */ | |
3869 | if (perm_bp) | |
3870 | { | |
075f6582 | 3871 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3872 | |
3873 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3874 | if (! perm_bp->inserted) |
8e65ff28 AC |
3875 | internal_error (__FILE__, __LINE__, |
3876 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3877 | "actually inserted"); |
3878 | ||
075f6582 | 3879 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3880 | if (b != perm_bp) |
3881 | { | |
075f6582 DJ |
3882 | if (b->owner->enable_state != bp_disabled |
3883 | && b->owner->enable_state != bp_shlib_disabled | |
3884 | && b->owner->enable_state != bp_call_disabled | |
3885 | && b->address == address /* address / overlay match */ | |
3886 | && (!overlay_debugging || b->section == section) | |
3887 | && breakpoint_address_is_meaningful (b->owner)) | |
3888 | { | |
3889 | if (b->inserted) | |
3890 | internal_error (__FILE__, __LINE__, | |
3891 | "another breakpoint was inserted on top of " | |
3892 | "a permanent breakpoint"); | |
3893 | ||
3894 | b->duplicate = 1; | |
3895 | } | |
c2c6d25f JM |
3896 | } |
3897 | } | |
c906108c SS |
3898 | } |
3899 | ||
76897487 KB |
3900 | static void |
3901 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
3902 | int bnum, int have_bnum) | |
3903 | { | |
3904 | char astr1[40]; | |
3905 | char astr2[40]; | |
3906 | ||
3907 | strcpy (astr1, local_hex_string_custom ((unsigned long) from_addr, "08l")); | |
3908 | strcpy (astr2, local_hex_string_custom ((unsigned long) to_addr, "08l")); | |
3909 | if (have_bnum) | |
3910 | warning ("Breakpoint %d address previously adjusted from %s to %s.", | |
3911 | bnum, astr1, astr2); | |
3912 | else | |
3913 | warning ("Breakpoint address adjusted from %s to %s.", astr1, astr2); | |
3914 | } | |
3915 | ||
3916 | /* Adjust a breakpoint's address to account for architectural constraints | |
3917 | on breakpoint placement. Return the adjusted address. Note: Very | |
3918 | few targets require this kind of adjustment. For most targets, | |
3919 | this function is simply the identity function. */ | |
3920 | ||
3921 | static CORE_ADDR | |
3922 | adjust_breakpoint_address (CORE_ADDR bpaddr) | |
3923 | { | |
3924 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
3925 | { | |
3926 | /* Very few targets need any kind of breakpoint adjustment. */ | |
3927 | return bpaddr; | |
3928 | } | |
3929 | else | |
3930 | { | |
3931 | CORE_ADDR adjusted_bpaddr; | |
3932 | ||
3933 | /* Some targets have architectural constraints on the placement | |
3934 | of breakpoint instructions. Obtain the adjusted address. */ | |
3935 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
3936 | bpaddr); | |
3937 | ||
3938 | /* An adjusted breakpoint address can significantly alter | |
3939 | a user's expectations. Print a warning if an adjustment | |
3940 | is required. */ | |
3941 | if (adjusted_bpaddr != bpaddr) | |
3942 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
3943 | ||
3944 | return adjusted_bpaddr; | |
3945 | } | |
3946 | } | |
3947 | ||
7cc221ef DJ |
3948 | /* Allocate a struct bp_location. */ |
3949 | ||
26bb91f3 | 3950 | static struct bp_location * |
e049a4b5 | 3951 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
3952 | { |
3953 | struct bp_location *loc, *loc_p; | |
3954 | ||
3955 | loc = xmalloc (sizeof (struct bp_location)); | |
3956 | memset (loc, 0, sizeof (*loc)); | |
3957 | ||
e049a4b5 DJ |
3958 | loc->owner = bpt; |
3959 | ||
3960 | switch (bp_type) | |
3961 | { | |
3962 | case bp_breakpoint: | |
3963 | case bp_until: | |
3964 | case bp_finish: | |
3965 | case bp_longjmp: | |
3966 | case bp_longjmp_resume: | |
3967 | case bp_step_resume: | |
3968 | case bp_through_sigtramp: | |
3969 | case bp_watchpoint_scope: | |
3970 | case bp_call_dummy: | |
3971 | case bp_shlib_event: | |
3972 | case bp_thread_event: | |
3973 | case bp_overlay_event: | |
3974 | case bp_catch_load: | |
3975 | case bp_catch_unload: | |
3976 | loc->loc_type = bp_loc_software_breakpoint; | |
3977 | break; | |
3978 | case bp_hardware_breakpoint: | |
3979 | loc->loc_type = bp_loc_hardware_breakpoint; | |
3980 | break; | |
3981 | case bp_hardware_watchpoint: | |
3982 | case bp_read_watchpoint: | |
3983 | case bp_access_watchpoint: | |
3984 | loc->loc_type = bp_loc_hardware_watchpoint; | |
3985 | break; | |
3986 | case bp_watchpoint: | |
3987 | case bp_catch_fork: | |
3988 | case bp_catch_vfork: | |
3989 | case bp_catch_exec: | |
3990 | case bp_catch_catch: | |
3991 | case bp_catch_throw: | |
3992 | loc->loc_type = bp_loc_other; | |
3993 | break; | |
3994 | default: | |
3995 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); | |
3996 | } | |
3997 | ||
7cc221ef DJ |
3998 | /* Add this breakpoint to the end of the chain. */ |
3999 | ||
4000 | loc_p = bp_location_chain; | |
4001 | if (loc_p == 0) | |
4002 | bp_location_chain = loc; | |
4003 | else | |
4004 | { | |
4005 | while (loc_p->next) | |
4006 | loc_p = loc_p->next; | |
4007 | loc_p->next = loc; | |
4008 | } | |
4009 | ||
4010 | return loc; | |
4011 | } | |
4012 | ||
4d28f7a8 KB |
4013 | /* set_raw_breakpoint() is a low level routine for allocating and |
4014 | partially initializing a breakpoint of type BPTYPE. The newly | |
4015 | created breakpoint's address, section, source file name, and line | |
4016 | number are provided by SAL. The newly created and partially | |
4017 | initialized breakpoint is added to the breakpoint chain and | |
4018 | is also returned as the value of this function. | |
c906108c | 4019 | |
4d28f7a8 KB |
4020 | It is expected that the caller will complete the initialization of |
4021 | the newly created breakpoint struct as well as output any status | |
4022 | information regarding the creation of a new breakpoint. In | |
4023 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4024 | number! Care should be taken to not allow an error() to occur | |
4025 | prior to completing the initialization of the breakpoint. If this | |
4026 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4027 | |
4028 | struct breakpoint * | |
4d28f7a8 | 4029 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4030 | { |
52f0bd74 | 4031 | struct breakpoint *b, *b1; |
c906108c SS |
4032 | |
4033 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4034 | memset (b, 0, sizeof (*b)); | |
e049a4b5 | 4035 | b->loc = allocate_bp_location (b, bptype); |
5cab636d DJ |
4036 | b->loc->requested_address = sal.pc; |
4037 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address); | |
c906108c SS |
4038 | if (sal.symtab == NULL) |
4039 | b->source_file = NULL; | |
4040 | else | |
4041 | b->source_file = savestring (sal.symtab->filename, | |
4042 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4043 | b->loc->section = sal.section; |
4d28f7a8 | 4044 | b->type = bptype; |
c906108c SS |
4045 | b->language = current_language->la_language; |
4046 | b->input_radix = input_radix; | |
4047 | b->thread = -1; | |
4048 | b->line_number = sal.line; | |
b5de0fa7 | 4049 | b->enable_state = bp_enabled; |
c906108c SS |
4050 | b->next = 0; |
4051 | b->silent = 0; | |
4052 | b->ignore_count = 0; | |
4053 | b->commands = NULL; | |
818dd999 | 4054 | b->frame_id = null_frame_id; |
c906108c SS |
4055 | b->dll_pathname = NULL; |
4056 | b->triggered_dll_pathname = NULL; | |
4057 | b->forked_inferior_pid = 0; | |
4058 | b->exec_pathname = NULL; | |
3086aeae | 4059 | b->ops = NULL; |
c906108c SS |
4060 | |
4061 | /* Add this breakpoint to the end of the chain | |
4062 | so that a list of breakpoints will come out in order | |
4063 | of increasing numbers. */ | |
4064 | ||
4065 | b1 = breakpoint_chain; | |
4066 | if (b1 == 0) | |
4067 | breakpoint_chain = b; | |
4068 | else | |
4069 | { | |
4070 | while (b1->next) | |
4071 | b1 = b1->next; | |
4072 | b1->next = b; | |
4073 | } | |
4074 | ||
9f60f21b | 4075 | check_duplicates (b); |
c906108c SS |
4076 | breakpoints_changed (); |
4077 | ||
4078 | return b; | |
4079 | } | |
4080 | ||
c2c6d25f JM |
4081 | |
4082 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4083 | instruction, hard-wired into the inferior's code. */ | |
4084 | void | |
4085 | make_breakpoint_permanent (struct breakpoint *b) | |
4086 | { | |
b5de0fa7 | 4087 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4088 | |
4089 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4090 | b->loc->inserted = 1; |
c2c6d25f JM |
4091 | } |
4092 | ||
1900040c MS |
4093 | static struct breakpoint * |
4094 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4095 | { | |
4096 | static int internal_breakpoint_number = -1; | |
4097 | struct symtab_and_line sal; | |
4098 | struct breakpoint *b; | |
4099 | ||
fe39c653 | 4100 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4101 | |
4102 | sal.pc = address; | |
4103 | sal.section = find_pc_overlay (sal.pc); | |
4104 | ||
4105 | b = set_raw_breakpoint (sal, type); | |
4106 | b->number = internal_breakpoint_number--; | |
4107 | b->disposition = disp_donttouch; | |
4108 | ||
4109 | return b; | |
4110 | } | |
4111 | ||
c906108c SS |
4112 | |
4113 | static void | |
fba45db2 | 4114 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4115 | { |
c906108c | 4116 | struct breakpoint *b; |
1900040c | 4117 | struct minimal_symbol *m; |
c906108c | 4118 | |
1900040c MS |
4119 | if (func_name == NULL) |
4120 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4121 | else | |
c906108c | 4122 | { |
5520a790 | 4123 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4124 | return; |
1900040c MS |
4125 | |
4126 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4127 | } |
c906108c | 4128 | |
b5de0fa7 | 4129 | b->enable_state = bp_disabled; |
c906108c SS |
4130 | b->silent = 1; |
4131 | if (func_name) | |
4fcf66da | 4132 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4133 | } |
4134 | ||
53a5351d JM |
4135 | /* Call this routine when stepping and nexting to enable a breakpoint |
4136 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4137 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4138 | ||
4139 | void | |
fba45db2 | 4140 | enable_longjmp_breakpoint (void) |
c906108c | 4141 | { |
52f0bd74 | 4142 | struct breakpoint *b; |
c906108c SS |
4143 | |
4144 | ALL_BREAKPOINTS (b) | |
4145 | if (b->type == bp_longjmp) | |
c5aa993b | 4146 | { |
b5de0fa7 | 4147 | b->enable_state = bp_enabled; |
9f60f21b | 4148 | check_duplicates (b); |
c5aa993b | 4149 | } |
c906108c SS |
4150 | } |
4151 | ||
4152 | void | |
fba45db2 | 4153 | disable_longjmp_breakpoint (void) |
c906108c | 4154 | { |
52f0bd74 | 4155 | struct breakpoint *b; |
c906108c SS |
4156 | |
4157 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4158 | if (b->type == bp_longjmp |
c906108c | 4159 | || b->type == bp_longjmp_resume) |
c5aa993b | 4160 | { |
b5de0fa7 | 4161 | b->enable_state = bp_disabled; |
9f60f21b | 4162 | check_duplicates (b); |
c5aa993b | 4163 | } |
c906108c SS |
4164 | } |
4165 | ||
1900040c MS |
4166 | static void |
4167 | create_overlay_event_breakpoint (char *func_name) | |
4168 | { | |
4169 | struct breakpoint *b; | |
4170 | struct minimal_symbol *m; | |
4171 | ||
5520a790 | 4172 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4173 | return; |
4174 | ||
4175 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4176 | bp_overlay_event); | |
4177 | b->addr_string = xstrdup (func_name); | |
4178 | ||
4179 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4180 | { |
4181 | b->enable_state = bp_enabled; | |
4182 | overlay_events_enabled = 1; | |
4183 | } | |
1900040c | 4184 | else |
c02f5703 MS |
4185 | { |
4186 | b->enable_state = bp_disabled; | |
4187 | overlay_events_enabled = 0; | |
4188 | } | |
1900040c MS |
4189 | } |
4190 | ||
4191 | void | |
4192 | enable_overlay_breakpoints (void) | |
4193 | { | |
52f0bd74 | 4194 | struct breakpoint *b; |
1900040c MS |
4195 | |
4196 | ALL_BREAKPOINTS (b) | |
4197 | if (b->type == bp_overlay_event) | |
4198 | { | |
4199 | b->enable_state = bp_enabled; | |
4200 | check_duplicates (b); | |
c02f5703 | 4201 | overlay_events_enabled = 1; |
1900040c MS |
4202 | } |
4203 | } | |
4204 | ||
4205 | void | |
4206 | disable_overlay_breakpoints (void) | |
4207 | { | |
52f0bd74 | 4208 | struct breakpoint *b; |
1900040c MS |
4209 | |
4210 | ALL_BREAKPOINTS (b) | |
4211 | if (b->type == bp_overlay_event) | |
4212 | { | |
4213 | b->enable_state = bp_disabled; | |
4214 | check_duplicates (b); | |
c02f5703 | 4215 | overlay_events_enabled = 0; |
1900040c MS |
4216 | } |
4217 | } | |
4218 | ||
c4093a6a | 4219 | struct breakpoint * |
fba45db2 | 4220 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4221 | { |
4222 | struct breakpoint *b; | |
c4093a6a | 4223 | |
1900040c | 4224 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4225 | |
b5de0fa7 | 4226 | b->enable_state = bp_enabled; |
c4093a6a | 4227 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5cab636d | 4228 | xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4229 | |
4230 | return b; | |
4231 | } | |
4232 | ||
4233 | void | |
4234 | remove_thread_event_breakpoints (void) | |
4235 | { | |
4236 | struct breakpoint *b, *temp; | |
4237 | ||
4238 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4239 | if (b->type == bp_thread_event) | |
4240 | delete_breakpoint (b); | |
4241 | } | |
4242 | ||
c906108c SS |
4243 | #ifdef SOLIB_ADD |
4244 | void | |
fba45db2 | 4245 | remove_solib_event_breakpoints (void) |
c906108c | 4246 | { |
52f0bd74 | 4247 | struct breakpoint *b, *temp; |
c906108c SS |
4248 | |
4249 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4250 | if (b->type == bp_shlib_event) | |
3172dc30 | 4251 | delete_breakpoint (b); |
c906108c SS |
4252 | } |
4253 | ||
c2c6d25f | 4254 | struct breakpoint * |
fba45db2 | 4255 | create_solib_event_breakpoint (CORE_ADDR address) |
c906108c SS |
4256 | { |
4257 | struct breakpoint *b; | |
c2c6d25f | 4258 | |
1900040c | 4259 | b = create_internal_breakpoint (address, bp_shlib_event); |
c2c6d25f | 4260 | return b; |
c906108c SS |
4261 | } |
4262 | ||
104c1213 JM |
4263 | /* Disable any breakpoints that are on code in shared libraries. Only |
4264 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4265 | ||
c906108c | 4266 | void |
fba45db2 | 4267 | disable_breakpoints_in_shlibs (int silent) |
c906108c | 4268 | { |
c5aa993b JM |
4269 | struct breakpoint *b; |
4270 | int disabled_shlib_breaks = 0; | |
c906108c SS |
4271 | |
4272 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4273 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4274 | { |
c906108c | 4275 | #if defined (PC_SOLIB) |
c5aa993b JM |
4276 | if (((b->type == bp_breakpoint) || |
4277 | (b->type == bp_hardware_breakpoint)) && | |
468d015d | 4278 | breakpoint_enabled (b) && |
5cab636d DJ |
4279 | !b->loc->duplicate && |
4280 | PC_SOLIB (b->loc->address)) | |
c5aa993b | 4281 | { |
b5de0fa7 | 4282 | b->enable_state = bp_shlib_disabled; |
c5aa993b JM |
4283 | if (!silent) |
4284 | { | |
4285 | if (!disabled_shlib_breaks) | |
4286 | { | |
4287 | target_terminal_ours_for_output (); | |
53a5351d | 4288 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
4289 | } |
4290 | disabled_shlib_breaks = 1; | |
53a5351d | 4291 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
4292 | } |
4293 | } | |
c906108c | 4294 | #endif |
c5aa993b | 4295 | } |
c906108c SS |
4296 | } |
4297 | ||
4298 | /* Try to reenable any breakpoints in shared libraries. */ | |
4299 | void | |
fba45db2 | 4300 | re_enable_breakpoints_in_shlibs (void) |
c906108c SS |
4301 | { |
4302 | struct breakpoint *b; | |
4303 | ||
4304 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 4305 | if (b->enable_state == bp_shlib_disabled) |
c5aa993b | 4306 | { |
d29caefc | 4307 | char buf[1], *lib; |
c906108c | 4308 | |
c5aa993b JM |
4309 | /* Do not reenable the breakpoint if the shared library |
4310 | is still not mapped in. */ | |
d29caefc DJ |
4311 | lib = PC_SOLIB (b->loc->address); |
4312 | if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0) | |
b5de0fa7 | 4313 | b->enable_state = bp_enabled; |
c5aa993b | 4314 | } |
c906108c SS |
4315 | } |
4316 | ||
4317 | #endif | |
4318 | ||
4319 | static void | |
fba45db2 KB |
4320 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4321 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4322 | { |
c5aa993b | 4323 | struct breakpoint *b; |
c906108c | 4324 | struct symtabs_and_lines sals; |
c5aa993b JM |
4325 | struct cleanup *old_chain; |
4326 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4327 | char *addr_start = hookname; |
4328 | char *addr_end = NULL; | |
4329 | char **canonical = (char **) NULL; | |
4330 | int thread = -1; /* All threads. */ | |
4331 | ||
c906108c | 4332 | /* Set a breakpoint on the specified hook. */ |
68219205 | 4333 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical, NULL); |
c906108c | 4334 | addr_end = hookname; |
c5aa993b | 4335 | |
c906108c SS |
4336 | if (sals.nelts == 0) |
4337 | { | |
4338 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4339 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4340 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4341 | return; | |
4342 | } | |
4343 | if (sals.nelts != 1) | |
4344 | { | |
53a5351d | 4345 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4346 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4347 | return; | |
4348 | } | |
4349 | ||
53a5351d JM |
4350 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4351 | in case the following errors out. */ | |
b8c9b27d | 4352 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4353 | if (canonical != (char **) NULL) |
c906108c | 4354 | { |
b8c9b27d | 4355 | make_cleanup (xfree, canonical); |
c906108c SS |
4356 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4357 | if (canonical[0] != NULL) | |
b8c9b27d | 4358 | make_cleanup (xfree, canonical[0]); |
c906108c | 4359 | } |
c5aa993b | 4360 | |
c906108c | 4361 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4362 | |
c906108c | 4363 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4364 | if (canonical != (char **) NULL) |
c906108c | 4365 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4366 | |
4d28f7a8 | 4367 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4368 | set_breakpoint_count (breakpoint_count + 1); |
4369 | b->number = breakpoint_count; | |
4370 | b->cond = NULL; | |
53a5351d JM |
4371 | b->cond_string = (cond_string == NULL) ? |
4372 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4373 | b->thread = thread; |
c5aa993b JM |
4374 | |
4375 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4376 | b->addr_string = canonical[0]; |
4377 | else if (addr_start) | |
4378 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4379 | |
b5de0fa7 EZ |
4380 | b->enable_state = bp_enabled; |
4381 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4382 | |
c906108c SS |
4383 | if (dll_pathname == NULL) |
4384 | b->dll_pathname = NULL; | |
4385 | else | |
4386 | { | |
4387 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4388 | strcpy (b->dll_pathname, dll_pathname); | |
4389 | } | |
c5aa993b | 4390 | |
c906108c SS |
4391 | mention (b); |
4392 | do_cleanups (old_chain); | |
4393 | } | |
4394 | ||
4395 | void | |
fba45db2 KB |
4396 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4397 | char *dll_pathname, char *cond_string) | |
c906108c | 4398 | { |
53a5351d JM |
4399 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4400 | cond_string, bp_catch_load); | |
c906108c SS |
4401 | } |
4402 | ||
4403 | void | |
fba45db2 KB |
4404 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4405 | char *dll_pathname, char *cond_string) | |
c906108c | 4406 | { |
53a5351d JM |
4407 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4408 | cond_string, bp_catch_unload); | |
c906108c SS |
4409 | } |
4410 | ||
4411 | static void | |
fba45db2 KB |
4412 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4413 | enum bptype bp_kind) | |
c906108c | 4414 | { |
c5aa993b JM |
4415 | struct symtab_and_line sal; |
4416 | struct breakpoint *b; | |
4417 | int thread = -1; /* All threads. */ | |
4418 | ||
fe39c653 | 4419 | init_sal (&sal); |
c906108c SS |
4420 | sal.pc = 0; |
4421 | sal.symtab = NULL; | |
4422 | sal.line = 0; | |
c5aa993b | 4423 | |
4d28f7a8 | 4424 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4425 | set_breakpoint_count (breakpoint_count + 1); |
4426 | b->number = breakpoint_count; | |
4427 | b->cond = NULL; | |
53a5351d JM |
4428 | b->cond_string = (cond_string == NULL) ? |
4429 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4430 | b->thread = thread; |
4431 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4432 | b->enable_state = bp_enabled; |
4433 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4434 | b->forked_inferior_pid = 0; |
c5aa993b | 4435 | |
c906108c SS |
4436 | mention (b); |
4437 | } | |
4438 | ||
4439 | void | |
fba45db2 | 4440 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4441 | { |
4442 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4443 | } | |
c5aa993b | 4444 | |
c906108c | 4445 | void |
fba45db2 | 4446 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4447 | { |
4448 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4449 | } | |
4450 | ||
4451 | void | |
fba45db2 | 4452 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4453 | { |
c5aa993b JM |
4454 | struct symtab_and_line sal; |
4455 | struct breakpoint *b; | |
4456 | int thread = -1; /* All threads. */ | |
c906108c | 4457 | |
fe39c653 | 4458 | init_sal (&sal); |
c906108c SS |
4459 | sal.pc = 0; |
4460 | sal.symtab = NULL; | |
4461 | sal.line = 0; | |
4462 | ||
4d28f7a8 | 4463 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4464 | set_breakpoint_count (breakpoint_count + 1); |
4465 | b->number = breakpoint_count; | |
4466 | b->cond = NULL; | |
53a5351d JM |
4467 | b->cond_string = (cond_string == NULL) ? |
4468 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4469 | b->thread = thread; |
4470 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4471 | b->enable_state = bp_enabled; |
4472 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4473 | |
c906108c SS |
4474 | mention (b); |
4475 | } | |
4476 | ||
4477 | static int | |
fba45db2 | 4478 | hw_breakpoint_used_count (void) |
c906108c | 4479 | { |
52f0bd74 | 4480 | struct breakpoint *b; |
c906108c SS |
4481 | int i = 0; |
4482 | ||
4483 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4484 | { |
b5de0fa7 | 4485 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4486 | i++; |
4487 | } | |
c906108c SS |
4488 | |
4489 | return i; | |
4490 | } | |
4491 | ||
4492 | static int | |
fba45db2 | 4493 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4494 | { |
52f0bd74 | 4495 | struct breakpoint *b; |
c906108c SS |
4496 | int i = 0; |
4497 | ||
4498 | *other_type_used = 0; | |
4499 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4500 | { |
468d015d | 4501 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4502 | { |
4503 | if (b->type == type) | |
4504 | i++; | |
4505 | else if ((b->type == bp_hardware_watchpoint || | |
4506 | b->type == bp_read_watchpoint || | |
468d015d | 4507 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4508 | *other_type_used = 1; |
4509 | } | |
4510 | } | |
c906108c SS |
4511 | return i; |
4512 | } | |
4513 | ||
53a5351d JM |
4514 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4515 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4516 | |
53a5351d JM |
4517 | FIXME - This ought to be done by setting a temporary breakpoint |
4518 | that gets deleted automatically... */ | |
c906108c SS |
4519 | |
4520 | void | |
818dd999 | 4521 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4522 | { |
52f0bd74 | 4523 | struct breakpoint *b; |
c906108c SS |
4524 | |
4525 | ALL_BREAKPOINTS (b) | |
4526 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4527 | { |
5cab636d DJ |
4528 | b->loc->requested_address = pc; |
4529 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address); | |
b5de0fa7 | 4530 | b->enable_state = bp_enabled; |
818dd999 | 4531 | b->frame_id = frame_id; |
9f60f21b | 4532 | check_duplicates (b); |
c5aa993b JM |
4533 | return; |
4534 | } | |
c906108c SS |
4535 | } |
4536 | ||
4537 | void | |
fba45db2 | 4538 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4539 | { |
c5aa993b | 4540 | struct breakpoint *b; |
c906108c SS |
4541 | |
4542 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4543 | { |
4544 | if (((b->type == bp_watchpoint) | |
4545 | || (b->type == bp_hardware_watchpoint) | |
4546 | || (b->type == bp_read_watchpoint) | |
4547 | || (b->type == bp_access_watchpoint) | |
4548 | || ep_is_exception_catchpoint (b)) | |
468d015d | 4549 | && breakpoint_enabled (b)) |
c5aa993b | 4550 | { |
b5de0fa7 | 4551 | b->enable_state = bp_call_disabled; |
9f60f21b | 4552 | check_duplicates (b); |
c5aa993b JM |
4553 | } |
4554 | } | |
c906108c SS |
4555 | } |
4556 | ||
4557 | void | |
fba45db2 | 4558 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4559 | { |
c5aa993b | 4560 | struct breakpoint *b; |
c906108c SS |
4561 | |
4562 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4563 | { |
4564 | if (((b->type == bp_watchpoint) | |
4565 | || (b->type == bp_hardware_watchpoint) | |
4566 | || (b->type == bp_read_watchpoint) | |
4567 | || (b->type == bp_access_watchpoint) | |
4568 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4569 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4570 | { |
b5de0fa7 | 4571 | b->enable_state = bp_enabled; |
9f60f21b | 4572 | check_duplicates (b); |
c5aa993b JM |
4573 | } |
4574 | } | |
c906108c SS |
4575 | } |
4576 | ||
4577 | ||
4578 | /* Set a breakpoint that will evaporate an end of command | |
4579 | at address specified by SAL. | |
4580 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4581 | ||
4582 | struct breakpoint * | |
818dd999 | 4583 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4584 | enum bptype type) |
c906108c | 4585 | { |
52f0bd74 | 4586 | struct breakpoint *b; |
4d28f7a8 | 4587 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4588 | b->enable_state = bp_enabled; |
4589 | b->disposition = disp_donttouch; | |
818dd999 | 4590 | b->frame_id = frame_id; |
c906108c SS |
4591 | |
4592 | /* If we're debugging a multi-threaded program, then we | |
4593 | want momentary breakpoints to be active in only a | |
4594 | single thread of control. */ | |
39f77062 KB |
4595 | if (in_thread_list (inferior_ptid)) |
4596 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4597 | |
4598 | return b; | |
4599 | } | |
c906108c | 4600 | \f |
c5aa993b | 4601 | |
c906108c SS |
4602 | /* Tell the user we have just set a breakpoint B. */ |
4603 | ||
4604 | static void | |
fba45db2 | 4605 | mention (struct breakpoint *b) |
c906108c SS |
4606 | { |
4607 | int say_where = 0; | |
3b31d625 | 4608 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4609 | struct ui_stream *stb; |
4610 | ||
4611 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4612 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
4613 | |
4614 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4615 | watchpoint) other than breakpoint creation. It should be possible to | |
4616 | clean this up and at the same time replace the random calls to | |
4617 | breakpoint_changed with this hook, as has already been done for | |
4618 | delete_breakpoint_hook and so on. */ | |
4619 | if (create_breakpoint_hook) | |
4620 | create_breakpoint_hook (b); | |
104c1213 | 4621 | breakpoint_create_event (b->number); |
c906108c | 4622 | |
3086aeae DJ |
4623 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4624 | b->ops->print_mention (b); | |
4625 | else | |
4626 | switch (b->type) | |
4627 | { | |
4628 | case bp_none: | |
4629 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4630 | break; | |
4631 | case bp_watchpoint: | |
4632 | ui_out_text (uiout, "Watchpoint "); | |
4633 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4634 | ui_out_field_int (uiout, "number", b->number); | |
4635 | ui_out_text (uiout, ": "); | |
4636 | print_expression (b->exp, stb->stream); | |
4637 | ui_out_field_stream (uiout, "exp", stb); | |
4638 | do_cleanups (ui_out_chain); | |
4639 | break; | |
4640 | case bp_hardware_watchpoint: | |
4641 | ui_out_text (uiout, "Hardware watchpoint "); | |
4642 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4643 | ui_out_field_int (uiout, "number", b->number); | |
4644 | ui_out_text (uiout, ": "); | |
4645 | print_expression (b->exp, stb->stream); | |
4646 | ui_out_field_stream (uiout, "exp", stb); | |
4647 | do_cleanups (ui_out_chain); | |
4648 | break; | |
4649 | case bp_read_watchpoint: | |
4650 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4651 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4652 | ui_out_field_int (uiout, "number", b->number); | |
4653 | ui_out_text (uiout, ": "); | |
4654 | print_expression (b->exp, stb->stream); | |
4655 | ui_out_field_stream (uiout, "exp", stb); | |
4656 | do_cleanups (ui_out_chain); | |
4657 | break; | |
4658 | case bp_access_watchpoint: | |
4659 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4660 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4661 | ui_out_field_int (uiout, "number", b->number); | |
4662 | ui_out_text (uiout, ": "); | |
4663 | print_expression (b->exp, stb->stream); | |
4664 | ui_out_field_stream (uiout, "exp", stb); | |
4665 | do_cleanups (ui_out_chain); | |
4666 | break; | |
4667 | case bp_breakpoint: | |
4668 | if (ui_out_is_mi_like_p (uiout)) | |
4669 | { | |
4670 | say_where = 0; | |
4671 | break; | |
4672 | } | |
4673 | printf_filtered ("Breakpoint %d", b->number); | |
4674 | say_where = 1; | |
4675 | break; | |
4676 | case bp_hardware_breakpoint: | |
4677 | if (ui_out_is_mi_like_p (uiout)) | |
4678 | { | |
4679 | say_where = 0; | |
4680 | break; | |
4681 | } | |
4682 | printf_filtered ("Hardware assisted breakpoint %d", b->number); | |
4683 | say_where = 1; | |
4684 | break; | |
4685 | case bp_catch_load: | |
4686 | case bp_catch_unload: | |
4687 | printf_filtered ("Catchpoint %d (%s %s)", | |
4688 | b->number, | |
4689 | (b->type == bp_catch_load) ? "load" : "unload", | |
4690 | (b->dll_pathname != NULL) ? | |
4691 | b->dll_pathname : "<any library>"); | |
4692 | break; | |
4693 | case bp_catch_fork: | |
4694 | case bp_catch_vfork: | |
4695 | printf_filtered ("Catchpoint %d (%s)", | |
4696 | b->number, | |
4697 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4698 | break; | |
4699 | case bp_catch_exec: | |
4700 | printf_filtered ("Catchpoint %d (exec)", | |
4701 | b->number); | |
4702 | break; | |
4703 | case bp_catch_catch: | |
4704 | case bp_catch_throw: | |
4705 | printf_filtered ("Catchpoint %d (%s)", | |
4706 | b->number, | |
4707 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
4708 | break; | |
4709 | ||
4710 | case bp_until: | |
4711 | case bp_finish: | |
4712 | case bp_longjmp: | |
4713 | case bp_longjmp_resume: | |
4714 | case bp_step_resume: | |
4715 | case bp_through_sigtramp: | |
4716 | case bp_call_dummy: | |
4717 | case bp_watchpoint_scope: | |
4718 | case bp_shlib_event: | |
4719 | case bp_thread_event: | |
4720 | case bp_overlay_event: | |
4721 | break; | |
4722 | } | |
c906108c | 4723 | |
c906108c SS |
4724 | if (say_where) |
4725 | { | |
4726 | if (addressprint || b->source_file == NULL) | |
4727 | { | |
4728 | printf_filtered (" at "); | |
5cab636d | 4729 | print_address_numeric (b->loc->address, 1, gdb_stdout); |
c906108c SS |
4730 | } |
4731 | if (b->source_file) | |
4732 | printf_filtered (": file %s, line %d.", | |
4733 | b->source_file, b->line_number); | |
c906108c | 4734 | } |
8b93c638 | 4735 | do_cleanups (old_chain); |
9dc5e2a9 | 4736 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4737 | return; |
c906108c SS |
4738 | printf_filtered ("\n"); |
4739 | } | |
c906108c | 4740 | \f |
c5aa993b | 4741 | |
c3f6f71d JM |
4742 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4743 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4744 | COND[i] and COND_STRING[i] values. | |
4745 | ||
4746 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4747 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4748 | array contents). If the function fails (error() is called), the | |
4749 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4750 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4751 | |
4752 | static void | |
c3f6f71d JM |
4753 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4754 | struct expression **cond, char **cond_string, | |
4755 | enum bptype type, enum bpdisp disposition, | |
4756 | int thread, int ignore_count, int from_tty) | |
c906108c | 4757 | { |
c3f6f71d JM |
4758 | if (type == bp_hardware_breakpoint) |
4759 | { | |
4760 | int i = hw_breakpoint_used_count (); | |
4761 | int target_resources_ok = | |
4762 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4763 | i + sals.nelts, 0); | |
4764 | if (target_resources_ok == 0) | |
4765 | error ("No hardware breakpoint support in the target."); | |
4766 | else if (target_resources_ok < 0) | |
4767 | error ("Hardware breakpoints used exceeds limit."); | |
4768 | } | |
c906108c | 4769 | |
c3f6f71d JM |
4770 | /* Now set all the breakpoints. */ |
4771 | { | |
4772 | int i; | |
4773 | for (i = 0; i < sals.nelts; i++) | |
4774 | { | |
4775 | struct breakpoint *b; | |
4776 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4777 | |
c3f6f71d JM |
4778 | if (from_tty) |
4779 | describe_other_breakpoints (sal.pc, sal.section); | |
4780 | ||
4d28f7a8 | 4781 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4782 | set_breakpoint_count (breakpoint_count + 1); |
4783 | b->number = breakpoint_count; | |
c3f6f71d JM |
4784 | b->cond = cond[i]; |
4785 | b->thread = thread; | |
d8ef46f5 DJ |
4786 | if (addr_string[i]) |
4787 | b->addr_string = addr_string[i]; | |
4788 | else | |
4789 | /* addr_string has to be used or breakpoint_re_set will delete | |
4790 | me. */ | |
5cab636d | 4791 | xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address)); |
c3f6f71d JM |
4792 | b->cond_string = cond_string[i]; |
4793 | b->ignore_count = ignore_count; | |
b5de0fa7 | 4794 | b->enable_state = bp_enabled; |
c3f6f71d JM |
4795 | b->disposition = disposition; |
4796 | mention (b); | |
4797 | } | |
4798 | } | |
4799 | } | |
c906108c | 4800 | |
c3f6f71d JM |
4801 | /* Parse ARG which is assumed to be a SAL specification possibly |
4802 | followed by conditionals. On return, SALS contains an array of SAL | |
4803 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4804 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4805 | |
b9362cc7 | 4806 | static void |
c3f6f71d JM |
4807 | parse_breakpoint_sals (char **address, |
4808 | struct symtabs_and_lines *sals, | |
4809 | char ***addr_string) | |
4810 | { | |
4811 | char *addr_start = *address; | |
4812 | *addr_string = NULL; | |
4813 | /* If no arg given, or if first arg is 'if ', use the default | |
4814 | breakpoint. */ | |
4815 | if ((*address) == NULL | |
4816 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4817 | { |
4818 | if (default_breakpoint_valid) | |
4819 | { | |
c3f6f71d | 4820 | struct symtab_and_line sal; |
fe39c653 | 4821 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 4822 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
4823 | xmalloc (sizeof (struct symtab_and_line)); |
4824 | sal.pc = default_breakpoint_address; | |
4825 | sal.line = default_breakpoint_line; | |
4826 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4827 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4828 | sals->sals[0] = sal; |
4829 | sals->nelts = 1; | |
c906108c SS |
4830 | } |
4831 | else | |
4832 | error ("No default breakpoint address now."); | |
4833 | } | |
4834 | else | |
4835 | { | |
c906108c | 4836 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4837 | current_source_symtab (which is decode_line_1's default). This |
4838 | should produce the results we want almost all of the time while | |
1aeae86e AF |
4839 | leaving default_breakpoint_* alone. |
4840 | ObjC: However, don't match an Objective-C method name which | |
4841 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 4842 | |
c214a6fd | 4843 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 4844 | |
c906108c | 4845 | if (default_breakpoint_valid |
0378c332 | 4846 | && (!cursal.symtab |
1aeae86e AF |
4847 | || ((strchr ("+-", (*address)[0]) != NULL) |
4848 | && ((*address)[1] != '[')))) | |
c3f6f71d | 4849 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
68219205 | 4850 | default_breakpoint_line, addr_string, NULL); |
c906108c | 4851 | else |
68219205 | 4852 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string, NULL); |
c906108c | 4853 | } |
c3f6f71d JM |
4854 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4855 | if (sals->nelts > 0 && *addr_string == NULL) | |
4856 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4857 | if (addr_start != (*address)) | |
c906108c | 4858 | { |
c3f6f71d JM |
4859 | int i; |
4860 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4861 | { |
c3f6f71d JM |
4862 | /* Add the string if not present. */ |
4863 | if ((*addr_string)[i] == NULL) | |
4864 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4865 | } |
4866 | } | |
c3f6f71d | 4867 | } |
c906108c | 4868 | |
c906108c | 4869 | |
c3f6f71d JM |
4870 | /* Convert each SAL into a real PC. Verify that the PC can be |
4871 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4872 | |
b9362cc7 | 4873 | static void |
c3f6f71d JM |
4874 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
4875 | char *address) | |
4876 | { | |
4877 | int i; | |
4878 | for (i = 0; i < sals->nelts; i++) | |
4879 | { | |
4880 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4881 | |
4882 | /* It's possible for the PC to be nonzero, but still an illegal | |
4883 | value on some targets. | |
4884 | ||
4885 | For example, on HP-UX if you start gdb, and before running the | |
4886 | inferior you try to set a breakpoint on a shared library function | |
4887 | "foo" where the inferior doesn't call "foo" directly but does | |
4888 | pass its address to another function call, then we do find a | |
4889 | minimal symbol for the "foo", but it's address is invalid. | |
4890 | (Appears to be an index into a table that the loader sets up | |
4891 | when the inferior is run.) | |
4892 | ||
4893 | Give the target a chance to bless sals.sals[i].pc before we | |
4894 | try to make a breakpoint for it. */ | |
c3f6f71d | 4895 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4896 | { |
c3f6f71d JM |
4897 | if (address == NULL) |
4898 | error ("Cannot break without a running program."); | |
4899 | else | |
4900 | error ("Cannot break on %s without a running program.", | |
4901 | address); | |
c5aa993b | 4902 | } |
c3f6f71d JM |
4903 | } |
4904 | } | |
4905 | ||
4906 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4907 | flag: first bit : 0 non-temporary, 1 temporary. | |
4908 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4909 | |
c3f6f71d | 4910 | static void |
fba45db2 | 4911 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d JM |
4912 | { |
4913 | int tempflag, hardwareflag; | |
4914 | struct symtabs_and_lines sals; | |
52f0bd74 | 4915 | struct expression **cond = 0; |
c3f6f71d JM |
4916 | /* Pointers in arg to the start, and one past the end, of the |
4917 | condition. */ | |
4918 | char **cond_string = (char **) NULL; | |
4919 | char *addr_start = arg; | |
4920 | char **addr_string; | |
4921 | struct cleanup *old_chain; | |
4922 | struct cleanup *breakpoint_chain = NULL; | |
4923 | int i; | |
4924 | int thread = -1; | |
4925 | int ignore_count = 0; | |
4926 | ||
4927 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4928 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4929 | |
c3f6f71d JM |
4930 | sals.sals = NULL; |
4931 | sals.nelts = 0; | |
4932 | addr_string = NULL; | |
4933 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4934 | ||
4935 | if (!sals.nelts) | |
4936 | return; | |
4937 | ||
4938 | /* Create a chain of things that always need to be cleaned up. */ | |
4939 | old_chain = make_cleanup (null_cleanup, 0); | |
4940 | ||
4941 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4942 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4943 | |
4944 | /* Cleanup the addr_string array but not its contents. */ | |
b8c9b27d | 4945 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4946 | |
4947 | /* Allocate space for all the cond expressions. */ | |
4948 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4949 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4950 | |
4951 | /* Allocate space for all the cond strings. */ | |
4952 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4953 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4954 | |
4955 | /* ----------------------------- SNIP ----------------------------- | |
4956 | Anything added to the cleanup chain beyond this point is assumed | |
4957 | to be part of a breakpoint. If the breakpoint create succeeds | |
4958 | then the memory is not reclaimed. */ | |
4959 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4960 | ||
4961 | /* Mark the contents of the addr_string for cleanup. These go on | |
4962 | the breakpoint_chain and only occure if the breakpoint create | |
4963 | fails. */ | |
4964 | for (i = 0; i < sals.nelts; i++) | |
4965 | { | |
4966 | if (addr_string[i] != NULL) | |
b8c9b27d | 4967 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
4968 | } |
4969 | ||
4970 | /* Resolve all line numbers to PC's and verify that the addresses | |
4971 | are ok for the target. */ | |
4972 | breakpoint_sals_to_pc (&sals, addr_start); | |
4973 | ||
4974 | /* Verify that condition can be parsed, before setting any | |
4975 | breakpoints. Allocate a separate condition expression for each | |
4976 | breakpoint. */ | |
4977 | thread = -1; /* No specific thread yet */ | |
4978 | for (i = 0; i < sals.nelts; i++) | |
4979 | { | |
4980 | char *tok = arg; | |
c906108c SS |
4981 | while (tok && *tok) |
4982 | { | |
c3f6f71d JM |
4983 | char *end_tok; |
4984 | int toklen; | |
4985 | char *cond_start = NULL; | |
4986 | char *cond_end = NULL; | |
c906108c SS |
4987 | while (*tok == ' ' || *tok == '\t') |
4988 | tok++; | |
4989 | ||
4990 | end_tok = tok; | |
4991 | ||
4992 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4993 | end_tok++; | |
4994 | ||
4995 | toklen = end_tok - tok; | |
4996 | ||
4997 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4998 | { | |
4999 | tok = cond_start = end_tok + 1; | |
c3f6f71d | 5000 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
b8c9b27d | 5001 | make_cleanup (xfree, cond[i]); |
c906108c | 5002 | cond_end = tok; |
c3f6f71d | 5003 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
b8c9b27d | 5004 | make_cleanup (xfree, cond_string[i]); |
c906108c SS |
5005 | } |
5006 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5007 | { | |
5008 | char *tmptok; | |
5009 | ||
5010 | tok = end_tok + 1; | |
5011 | tmptok = tok; | |
5012 | thread = strtol (tok, &tok, 0); | |
5013 | if (tok == tmptok) | |
5014 | error ("Junk after thread keyword."); | |
5015 | if (!valid_thread_id (thread)) | |
5016 | error ("Unknown thread %d\n", thread); | |
5017 | } | |
5018 | else | |
5019 | error ("Junk at end of arguments."); | |
5020 | } | |
5021 | } | |
c906108c | 5022 | |
c3f6f71d JM |
5023 | create_breakpoints (sals, addr_string, cond, cond_string, |
5024 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5025 | tempflag ? disp_del : disp_donttouch, |
c3f6f71d JM |
5026 | thread, ignore_count, from_tty); |
5027 | ||
5028 | if (sals.nelts > 1) | |
5029 | { | |
5030 | warning ("Multiple breakpoints were set."); | |
5031 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5032 | } |
c3f6f71d JM |
5033 | /* That's it. Discard the cleanups for data inserted into the |
5034 | breakpoint. */ | |
5035 | discard_cleanups (breakpoint_chain); | |
5036 | /* But cleanup everything else. */ | |
5037 | do_cleanups (old_chain); | |
5038 | } | |
c906108c | 5039 | |
c3f6f71d JM |
5040 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5041 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5042 | |
c3f6f71d JM |
5043 | struct captured_breakpoint_args |
5044 | { | |
5045 | char *address; | |
5046 | char *condition; | |
5047 | int hardwareflag; | |
5048 | int tempflag; | |
5049 | int thread; | |
5050 | int ignore_count; | |
5051 | }; | |
5052 | ||
5053 | static int | |
5054 | do_captured_breakpoint (void *data) | |
5055 | { | |
5056 | struct captured_breakpoint_args *args = data; | |
5057 | struct symtabs_and_lines sals; | |
52f0bd74 | 5058 | struct expression **cond; |
c3f6f71d JM |
5059 | struct cleanup *old_chain; |
5060 | struct cleanup *breakpoint_chain = NULL; | |
5061 | int i; | |
5062 | char **addr_string; | |
5063 | char **cond_string; | |
5064 | ||
5065 | char *address_end; | |
5066 | ||
5067 | /* Parse the source and lines spec. Delay check that the expression | |
5068 | didn't contain trailing garbage until after cleanups are in | |
5069 | place. */ | |
5070 | sals.sals = NULL; | |
5071 | sals.nelts = 0; | |
5072 | address_end = args->address; | |
5073 | addr_string = NULL; | |
5074 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
5075 | ||
5076 | if (!sals.nelts) | |
5077 | return GDB_RC_NONE; | |
5078 | ||
5079 | /* Create a chain of things at always need to be cleaned up. */ | |
5080 | old_chain = make_cleanup (null_cleanup, 0); | |
5081 | ||
5082 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5083 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5084 | |
5085 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5086 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5087 | |
5088 | /* Allocate space for all the cond expressions. */ | |
5089 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5090 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5091 | |
5092 | /* Allocate space for all the cond strings. */ | |
5093 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5094 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5095 | |
5096 | /* ----------------------------- SNIP ----------------------------- | |
5097 | Anything added to the cleanup chain beyond this point is assumed | |
5098 | to be part of a breakpoint. If the breakpoint create goes | |
5099 | through then that memory is not cleaned up. */ | |
5100 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5101 | ||
5102 | /* Mark the contents of the addr_string for cleanup. These go on | |
5103 | the breakpoint_chain and only occure if the breakpoint create | |
5104 | fails. */ | |
c906108c SS |
5105 | for (i = 0; i < sals.nelts; i++) |
5106 | { | |
c3f6f71d | 5107 | if (addr_string[i] != NULL) |
b8c9b27d | 5108 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5109 | } |
5110 | ||
c3f6f71d JM |
5111 | /* Wait until now before checking for garbage at the end of the |
5112 | address. That way cleanups can take care of freeing any | |
5113 | memory. */ | |
5114 | if (*address_end != '\0') | |
5115 | error ("Garbage %s following breakpoint address", address_end); | |
5116 | ||
5117 | /* Resolve all line numbers to PC's. */ | |
5118 | breakpoint_sals_to_pc (&sals, args->address); | |
5119 | ||
5120 | /* Verify that conditions can be parsed, before setting any | |
5121 | breakpoints. */ | |
5122 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5123 | { |
c3f6f71d JM |
5124 | if (args->condition != NULL) |
5125 | { | |
5126 | char *tok = args->condition; | |
5127 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5128 | if (*tok != '\0') | |
5129 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 5130 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5131 | cond_string[i] = xstrdup (args->condition); |
5132 | } | |
c906108c | 5133 | } |
c3f6f71d JM |
5134 | |
5135 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5136 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5137 | args->tempflag ? disp_del : disp_donttouch, |
c3f6f71d JM |
5138 | args->thread, args->ignore_count, 0/*from-tty*/); |
5139 | ||
5140 | /* That's it. Discard the cleanups for data inserted into the | |
5141 | breakpoint. */ | |
5142 | discard_cleanups (breakpoint_chain); | |
5143 | /* But cleanup everything else. */ | |
c906108c | 5144 | do_cleanups (old_chain); |
c3f6f71d | 5145 | return GDB_RC_OK; |
c906108c SS |
5146 | } |
5147 | ||
c3f6f71d JM |
5148 | enum gdb_rc |
5149 | gdb_breakpoint (char *address, char *condition, | |
5150 | int hardwareflag, int tempflag, | |
5151 | int thread, int ignore_count) | |
5152 | { | |
5153 | struct captured_breakpoint_args args; | |
5154 | args.address = address; | |
5155 | args.condition = condition; | |
5156 | args.hardwareflag = hardwareflag; | |
5157 | args.tempflag = tempflag; | |
5158 | args.thread = thread; | |
5159 | args.ignore_count = ignore_count; | |
5160 | return catch_errors (do_captured_breakpoint, &args, | |
5161 | NULL, RETURN_MASK_ALL); | |
5162 | } | |
5163 | ||
5164 | ||
c906108c | 5165 | static void |
fba45db2 | 5166 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5167 | { |
5168 | struct frame_info *frame; | |
5169 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
5170 | char *extra_args = NULL; |
5171 | char *level_arg; | |
c906108c SS |
5172 | int extra_args_len = 0, if_arg = 0; |
5173 | ||
5174 | if (!arg || | |
5175 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5176 | { | |
5177 | ||
5178 | if (default_breakpoint_valid) | |
5179 | { | |
6e7f8b9c | 5180 | if (deprecated_selected_frame) |
c906108c | 5181 | { |
bdd78e62 | 5182 | selected_pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
5183 | if (arg) |
5184 | if_arg = 1; | |
5185 | } | |
5186 | else | |
5187 | error ("No selected frame."); | |
5188 | } | |
5189 | else | |
5190 | error ("No default breakpoint address now."); | |
5191 | } | |
5192 | else | |
5193 | { | |
5194 | extra_args = strchr (arg, ' '); | |
5195 | if (extra_args) | |
5196 | { | |
5197 | extra_args++; | |
5198 | extra_args_len = strlen (extra_args); | |
5199 | level_arg = (char *) xmalloc (extra_args - arg); | |
5200 | strncpy (level_arg, arg, extra_args - arg - 1); | |
5201 | level_arg[extra_args - arg - 1] = '\0'; | |
5202 | } | |
5203 | else | |
5204 | { | |
5205 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
5206 | strcpy (level_arg, arg); | |
5207 | } | |
5208 | ||
5209 | frame = parse_frame_specification (level_arg); | |
5210 | if (frame) | |
bdd78e62 | 5211 | selected_pc = get_frame_pc (frame); |
c906108c SS |
5212 | else |
5213 | selected_pc = 0; | |
5214 | } | |
5215 | if (if_arg) | |
5216 | { | |
5217 | extra_args = arg; | |
c5aa993b | 5218 | extra_args_len = strlen (arg); |
c906108c SS |
5219 | } |
5220 | ||
5221 | if (selected_pc) | |
5222 | { | |
c5aa993b | 5223 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c | 5224 | { |
9ebf4acf | 5225 | char *addr_string; |
c906108c | 5226 | if (extra_args_len) |
9ebf4acf | 5227 | addr_string = xstrprintf ("*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5228 | else |
9ebf4acf | 5229 | addr_string = xstrprintf ("*0x%s", paddr_nz (high)); |
c906108c | 5230 | break_command_1 (addr_string, flag, from_tty); |
b8c9b27d | 5231 | xfree (addr_string); |
c906108c SS |
5232 | } |
5233 | else | |
5234 | error ("No function contains the specified address"); | |
5235 | } | |
5236 | else | |
5237 | error ("Unable to set breakpoint at procedure exit"); | |
5238 | } | |
5239 | ||
5240 | ||
5241 | static void | |
fba45db2 | 5242 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5243 | { |
5244 | char *addr_string, *break_string, *beg_addr_string; | |
5245 | CORE_ADDR low, high; | |
5246 | struct symtabs_and_lines sals; | |
5247 | struct symtab_and_line sal; | |
5248 | struct cleanup *old_chain; | |
7f7e9482 | 5249 | char *extra_args = NULL; |
c906108c SS |
5250 | int extra_args_len = 0; |
5251 | int i, if_arg = 0; | |
5252 | ||
5253 | if (!arg || | |
5254 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5255 | { | |
5256 | if (default_breakpoint_valid) | |
5257 | { | |
6e7f8b9c | 5258 | if (deprecated_selected_frame) |
c906108c | 5259 | { |
9ebf4acf AC |
5260 | addr_string = xstrprintf ("*0x%s", |
5261 | paddr_nz (get_frame_pc (deprecated_selected_frame))); | |
c906108c SS |
5262 | if (arg) |
5263 | if_arg = 1; | |
5264 | } | |
5265 | else | |
5266 | error ("No selected frame."); | |
5267 | } | |
5268 | else | |
5269 | error ("No default breakpoint address now."); | |
5270 | } | |
5271 | else | |
5272 | { | |
5273 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5274 | strcpy (addr_string, arg); | |
5275 | } | |
5276 | ||
5277 | if (if_arg) | |
5278 | { | |
5279 | extra_args = arg; | |
c5aa993b JM |
5280 | extra_args_len = strlen (arg); |
5281 | } | |
5282 | else if (arg) | |
5283 | { | |
5284 | /* get the stuff after the function name or address */ | |
5285 | extra_args = strchr (arg, ' '); | |
5286 | if (extra_args) | |
5287 | { | |
5288 | extra_args++; | |
5289 | extra_args_len = strlen (extra_args); | |
5290 | } | |
c906108c | 5291 | } |
c906108c SS |
5292 | |
5293 | sals.sals = NULL; | |
5294 | sals.nelts = 0; | |
5295 | ||
c5aa993b JM |
5296 | beg_addr_string = addr_string; |
5297 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
68219205 | 5298 | (char ***) NULL, NULL); |
c906108c | 5299 | |
b8c9b27d KB |
5300 | xfree (beg_addr_string); |
5301 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
5302 | for (i = 0; (i < sals.nelts); i++) |
5303 | { | |
5304 | sal = sals.sals[i]; | |
c5aa993b | 5305 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c | 5306 | { |
9ebf4acf | 5307 | break_string; |
c906108c | 5308 | if (extra_args_len) |
9ebf4acf AC |
5309 | break_string = xstrprintf ("*0x%s %s", paddr_nz (high), |
5310 | extra_args); | |
c906108c | 5311 | else |
9ebf4acf | 5312 | break_string = xstrprintf ("*0x%s", paddr_nz (high)); |
c906108c | 5313 | break_command_1 (break_string, flag, from_tty); |
b8c9b27d | 5314 | xfree (break_string); |
c906108c SS |
5315 | } |
5316 | else | |
5317 | error ("No function contains the specified address"); | |
5318 | } | |
5319 | if (sals.nelts > 1) | |
5320 | { | |
53a5351d JM |
5321 | warning ("Multiple breakpoints were set.\n"); |
5322 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5323 | } |
c5aa993b | 5324 | do_cleanups (old_chain); |
c906108c SS |
5325 | } |
5326 | ||
5327 | ||
5328 | /* Helper function for break_command_1 and disassemble_command. */ | |
5329 | ||
5330 | void | |
fba45db2 | 5331 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5332 | { |
5333 | CORE_ADDR pc; | |
5334 | ||
5335 | if (sal->pc == 0 && sal->symtab != NULL) | |
5336 | { | |
5337 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5338 | error ("No line %d in file \"%s\".", | |
5339 | sal->line, sal->symtab->filename); | |
5340 | sal->pc = pc; | |
5341 | } | |
5342 | ||
5343 | if (sal->section == 0 && sal->symtab != NULL) | |
5344 | { | |
5345 | struct blockvector *bv; | |
c5aa993b JM |
5346 | struct block *b; |
5347 | struct symbol *sym; | |
5348 | int index; | |
c906108c | 5349 | |
c5aa993b | 5350 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5351 | if (bv != NULL) |
5352 | { | |
c5aa993b | 5353 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5354 | sym = block_function (b); |
5355 | if (sym != NULL) | |
5356 | { | |
5357 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5358 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5359 | } | |
5360 | else | |
5361 | { | |
5362 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5363 | have to look harder. This case can be executed if we have |
5364 | line numbers but no functions (as can happen in assembly | |
5365 | source). */ | |
c906108c | 5366 | |
c5aa993b | 5367 | struct minimal_symbol *msym; |
c906108c SS |
5368 | |
5369 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5370 | if (msym) | |
5371 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5372 | } | |
5373 | } | |
5374 | } | |
5375 | } | |
5376 | ||
5377 | void | |
fba45db2 | 5378 | break_command (char *arg, int from_tty) |
c906108c SS |
5379 | { |
5380 | break_command_1 (arg, 0, from_tty); | |
5381 | } | |
5382 | ||
502fd408 | 5383 | void |
fba45db2 | 5384 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5385 | { |
5386 | break_at_finish_command_1 (arg, 0, from_tty); | |
5387 | } | |
5388 | ||
502fd408 | 5389 | void |
fba45db2 | 5390 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5391 | { |
5392 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5393 | } | |
5394 | ||
5395 | void | |
fba45db2 | 5396 | tbreak_command (char *arg, int from_tty) |
c906108c SS |
5397 | { |
5398 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5399 | } | |
5400 | ||
502fd408 | 5401 | void |
fba45db2 | 5402 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5403 | { |
5404 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5405 | } | |
5406 | ||
5407 | static void | |
fba45db2 | 5408 | hbreak_command (char *arg, int from_tty) |
c906108c SS |
5409 | { |
5410 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
5411 | } | |
5412 | ||
5413 | static void | |
fba45db2 | 5414 | thbreak_command (char *arg, int from_tty) |
c906108c SS |
5415 | { |
5416 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
5417 | } | |
5418 | ||
5419 | static void | |
fba45db2 | 5420 | stop_command (char *arg, int from_tty) |
c906108c SS |
5421 | { |
5422 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5423 | Usage: stop in <function | address>\n\ | |
5424 | stop at <line>\n"); | |
5425 | } | |
5426 | ||
5427 | static void | |
fba45db2 | 5428 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5429 | { |
5430 | int badInput = 0; | |
5431 | ||
c5aa993b | 5432 | if (arg == (char *) NULL) |
c906108c SS |
5433 | badInput = 1; |
5434 | else if (*arg != '*') | |
5435 | { | |
5436 | char *argptr = arg; | |
5437 | int hasColon = 0; | |
5438 | ||
53a5351d JM |
5439 | /* look for a ':'. If this is a line number specification, then |
5440 | say it is bad, otherwise, it should be an address or | |
5441 | function/method name */ | |
c906108c | 5442 | while (*argptr && !hasColon) |
c5aa993b JM |
5443 | { |
5444 | hasColon = (*argptr == ':'); | |
5445 | argptr++; | |
5446 | } | |
c906108c SS |
5447 | |
5448 | if (hasColon) | |
c5aa993b | 5449 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5450 | else |
c5aa993b | 5451 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5452 | } |
5453 | ||
5454 | if (badInput) | |
c5aa993b | 5455 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
5456 | else |
5457 | break_command_1 (arg, 0, from_tty); | |
5458 | } | |
5459 | ||
5460 | static void | |
fba45db2 | 5461 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5462 | { |
5463 | int badInput = 0; | |
5464 | ||
c5aa993b | 5465 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5466 | badInput = 1; |
5467 | else | |
5468 | { | |
5469 | char *argptr = arg; | |
5470 | int hasColon = 0; | |
5471 | ||
5472 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5473 | it is probably a line number. */ |
c906108c | 5474 | while (*argptr && !hasColon) |
c5aa993b JM |
5475 | { |
5476 | hasColon = (*argptr == ':'); | |
5477 | argptr++; | |
5478 | } | |
c906108c SS |
5479 | |
5480 | if (hasColon) | |
c5aa993b | 5481 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5482 | else |
c5aa993b | 5483 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5484 | } |
5485 | ||
5486 | if (badInput) | |
c5aa993b | 5487 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
5488 | else |
5489 | break_command_1 (arg, 0, from_tty); | |
5490 | } | |
5491 | ||
53a5351d JM |
5492 | /* accessflag: hw_write: watch write, |
5493 | hw_read: watch read, | |
5494 | hw_access: watch access (read or write) */ | |
c906108c | 5495 | static void |
fba45db2 | 5496 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5497 | { |
5498 | struct breakpoint *b; | |
5499 | struct symtab_and_line sal; | |
5500 | struct expression *exp; | |
5501 | struct block *exp_valid_block; | |
5502 | struct value *val, *mark; | |
5503 | struct frame_info *frame; | |
5504 | struct frame_info *prev_frame = NULL; | |
5505 | char *exp_start = NULL; | |
5506 | char *exp_end = NULL; | |
5507 | char *tok, *end_tok; | |
5508 | int toklen; | |
5509 | char *cond_start = NULL; | |
5510 | char *cond_end = NULL; | |
5511 | struct expression *cond = NULL; | |
5512 | int i, other_type_used, target_resources_ok = 0; | |
5513 | enum bptype bp_type; | |
5514 | int mem_cnt = 0; | |
5515 | ||
fe39c653 | 5516 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5517 | |
c906108c SS |
5518 | /* Parse arguments. */ |
5519 | innermost_block = NULL; | |
5520 | exp_start = arg; | |
5521 | exp = parse_exp_1 (&arg, 0, 0); | |
5522 | exp_end = arg; | |
5523 | exp_valid_block = innermost_block; | |
5524 | mark = value_mark (); | |
5525 | val = evaluate_expression (exp); | |
5526 | release_value (val); | |
5527 | if (VALUE_LAZY (val)) | |
5528 | value_fetch_lazy (val); | |
5529 | ||
5530 | tok = arg; | |
5531 | while (*tok == ' ' || *tok == '\t') | |
5532 | tok++; | |
5533 | end_tok = tok; | |
5534 | ||
5535 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5536 | end_tok++; | |
5537 | ||
5538 | toklen = end_tok - tok; | |
5539 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5540 | { | |
5541 | tok = cond_start = end_tok + 1; | |
5542 | cond = parse_exp_1 (&tok, 0, 0); | |
5543 | cond_end = tok; | |
5544 | } | |
5545 | if (*tok) | |
c5aa993b | 5546 | error ("Junk at end of command."); |
c906108c | 5547 | |
53a5351d | 5548 | if (accessflag == hw_read) |
c5aa993b | 5549 | bp_type = bp_read_watchpoint; |
53a5351d | 5550 | else if (accessflag == hw_access) |
c5aa993b JM |
5551 | bp_type = bp_access_watchpoint; |
5552 | else | |
5553 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5554 | |
5555 | mem_cnt = can_use_hardware_watchpoint (val); | |
5556 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5557 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5558 | if (mem_cnt != 0) |
5559 | { | |
5560 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5561 | target_resources_ok = |
5562 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5563 | other_type_used); | |
c5aa993b | 5564 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5565 | error ("Target does not support this type of hardware watchpoint."); |
5566 | ||
c5aa993b | 5567 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5568 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5569 | } |
c906108c SS |
5570 | |
5571 | #if defined(HPUXHPPA) | |
c5aa993b | 5572 | /* On HP-UX if you set a h/w |
c906108c SS |
5573 | watchpoint before the "run" command, the inferior dies with a e.g., |
5574 | SIGILL once you start it. I initially believed this was due to a | |
5575 | bad interaction between page protection traps and the initial | |
5576 | startup sequence by the dynamic linker. | |
5577 | ||
5578 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5579 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5580 | yet, which forced slow watches before a "run" or "attach", and it |
5581 | still fails somewhere in the startup code. | |
5582 | ||
5583 | Until I figure out what's happening, I'm disallowing watches altogether | |
5584 | before the "run" or "attach" command. We'll tell the user they must | |
5585 | set watches after getting the program started. */ | |
c5aa993b | 5586 | if (!target_has_execution) |
c906108c SS |
5587 | { |
5588 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5589 | return; | |
5590 | } | |
5591 | #endif /* HPUXHPPA */ | |
c5aa993b | 5592 | |
4d28f7a8 KB |
5593 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5594 | watchpoint could not be set. */ | |
5595 | if (!mem_cnt || target_resources_ok <= 0) | |
5596 | bp_type = bp_watchpoint; | |
5597 | ||
c906108c | 5598 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5599 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5600 | set_breakpoint_count (breakpoint_count + 1); |
5601 | b->number = breakpoint_count; | |
b5de0fa7 | 5602 | b->disposition = disp_donttouch; |
c906108c SS |
5603 | b->exp = exp; |
5604 | b->exp_valid_block = exp_valid_block; | |
5605 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5606 | b->val = val; | |
5607 | b->cond = cond; | |
5608 | if (cond_start) | |
5609 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5610 | else | |
5611 | b->cond_string = 0; | |
c5aa993b | 5612 | |
c906108c SS |
5613 | frame = block_innermost_frame (exp_valid_block); |
5614 | if (frame) | |
5615 | { | |
5616 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5617 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5618 | } |
5619 | else | |
101dcfbe AC |
5620 | { |
5621 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5622 | } | |
c906108c | 5623 | |
c906108c SS |
5624 | /* If the expression is "local", then set up a "watchpoint scope" |
5625 | breakpoint at the point where we've left the scope of the watchpoint | |
5626 | expression. */ | |
5627 | if (innermost_block) | |
5628 | { | |
5629 | if (prev_frame) | |
5630 | { | |
5631 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5632 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5633 | bp_watchpoint_scope); | |
c906108c | 5634 | |
b5de0fa7 | 5635 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5636 | |
5637 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5638 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5639 | |
5640 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5641 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5642 | |
5643 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5644 | scope_breakpoint->loc->requested_address |
5645 | = get_frame_pc (prev_frame); | |
5646 | scope_breakpoint->loc->address | |
5647 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address); | |
c906108c SS |
5648 | |
5649 | /* The scope breakpoint is related to the watchpoint. We | |
5650 | will need to act on them together. */ | |
5651 | b->related_breakpoint = scope_breakpoint; | |
5652 | } | |
5653 | } | |
5654 | value_free_to_mark (mark); | |
5655 | mention (b); | |
5656 | } | |
5657 | ||
5658 | /* Return count of locations need to be watched and can be handled | |
5659 | in hardware. If the watchpoint can not be handled | |
5660 | in hardware return zero. */ | |
5661 | ||
5662 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d | 5663 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
b1e29e33 | 5664 | ((BYTE_SIZE) <= (DEPRECATED_REGISTER_SIZE)) |
53a5351d JM |
5665 | #endif |
5666 | ||
5667 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5668 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5669 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5670 | #endif |
5671 | ||
5672 | static int | |
fba45db2 | 5673 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5674 | { |
5675 | int found_memory_cnt = 0; | |
2e70b7b9 | 5676 | struct value *head = v; |
c906108c SS |
5677 | |
5678 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5679 | if (!can_use_hw_watchpoints) |
c906108c | 5680 | return 0; |
c5aa993b | 5681 | |
5c44784c JM |
5682 | /* Make sure that the value of the expression depends only upon |
5683 | memory contents, and values computed from them within GDB. If we | |
5684 | find any register references or function calls, we can't use a | |
5685 | hardware watchpoint. | |
5686 | ||
5687 | The idea here is that evaluating an expression generates a series | |
5688 | of values, one holding the value of every subexpression. (The | |
5689 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5690 | a*b+c.) GDB's values hold almost enough information to establish | |
5691 | the criteria given above --- they identify memory lvalues, | |
5692 | register lvalues, computed values, etcetera. So we can evaluate | |
5693 | the expression, and then scan the chain of values that leaves | |
5694 | behind to decide whether we can detect any possible change to the | |
5695 | expression's final value using only hardware watchpoints. | |
5696 | ||
5697 | However, I don't think that the values returned by inferior | |
5698 | function calls are special in any way. So this function may not | |
5699 | notice that an expression involving an inferior function call | |
5700 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5701 | for (; v; v = v->next) |
c906108c | 5702 | { |
5c44784c | 5703 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5704 | { |
5c44784c JM |
5705 | if (VALUE_LAZY (v)) |
5706 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5707 | we either just used its address (e.g., `a' in `a.b') or | |
5708 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5709 | ; | |
53a5351d | 5710 | else |
5c44784c JM |
5711 | { |
5712 | /* Ahh, memory we actually used! Check if we can cover | |
5713 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5714 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5715 | ||
5716 | /* We only watch structs and arrays if user asked for it | |
5717 | explicitly, never if they just happen to appear in a | |
5718 | middle of some value chain. */ | |
5719 | if (v == head | |
5720 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5721 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5722 | { | |
5723 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5724 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5725 | ||
5726 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5727 | return 0; | |
5728 | else | |
5729 | found_memory_cnt++; | |
5730 | } | |
5c44784c | 5731 | } |
c5aa993b | 5732 | } |
c906108c | 5733 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5734 | return 0; /* ??? What does this represent? */ |
5735 | else if (v->lval == lval_register) | |
5736 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5737 | } |
5738 | ||
5739 | /* The expression itself looks suitable for using a hardware | |
5740 | watchpoint, but give the target machine a chance to reject it. */ | |
5741 | return found_memory_cnt; | |
5742 | } | |
5743 | ||
8b93c638 | 5744 | void |
fba45db2 | 5745 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5746 | { |
5747 | watch_command (arg, from_tty); | |
5748 | } | |
8926118c | 5749 | |
c5aa993b | 5750 | static void |
fba45db2 | 5751 | watch_command (char *arg, int from_tty) |
c906108c | 5752 | { |
53a5351d | 5753 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5754 | } |
5755 | ||
8b93c638 | 5756 | void |
fba45db2 | 5757 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5758 | { |
5759 | rwatch_command (arg, from_tty); | |
5760 | } | |
8926118c | 5761 | |
c5aa993b | 5762 | static void |
fba45db2 | 5763 | rwatch_command (char *arg, int from_tty) |
c906108c | 5764 | { |
53a5351d | 5765 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5766 | } |
5767 | ||
8b93c638 | 5768 | void |
fba45db2 | 5769 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5770 | { |
5771 | awatch_command (arg, from_tty); | |
5772 | } | |
8926118c | 5773 | |
c5aa993b | 5774 | static void |
fba45db2 | 5775 | awatch_command (char *arg, int from_tty) |
c906108c | 5776 | { |
53a5351d | 5777 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5778 | } |
c906108c | 5779 | \f |
c5aa993b | 5780 | |
43ff13b4 | 5781 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5782 | because it uses the mechanisms of breakpoints. */ |
5783 | ||
43ff13b4 JM |
5784 | /* This function is called by fetch_inferior_event via the |
5785 | cmd_continuation pointer, to complete the until command. It takes | |
5786 | care of cleaning up the temporary breakpoints set up by the until | |
5787 | command. */ | |
c2c6d25f JM |
5788 | static void |
5789 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5790 | { |
0d06e24b JM |
5791 | struct cleanup *cleanups; |
5792 | ||
57e687d9 | 5793 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5794 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5795 | } |
5796 | ||
c906108c | 5797 | void |
ae66c1fc | 5798 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
5799 | { |
5800 | struct symtabs_and_lines sals; | |
5801 | struct symtab_and_line sal; | |
6e7f8b9c | 5802 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
5803 | struct breakpoint *breakpoint; |
5804 | struct cleanup *old_chain; | |
0d06e24b JM |
5805 | struct continuation_arg *arg1; |
5806 | ||
c906108c SS |
5807 | |
5808 | clear_proceed_status (); | |
5809 | ||
5810 | /* Set a breakpoint where the user wants it and at return from | |
5811 | this function */ | |
c5aa993b | 5812 | |
c906108c SS |
5813 | if (default_breakpoint_valid) |
5814 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 5815 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 5816 | else |
53a5351d | 5817 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 5818 | 0, (char ***) NULL, NULL); |
c5aa993b | 5819 | |
c906108c SS |
5820 | if (sals.nelts != 1) |
5821 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5822 | |
c906108c | 5823 | sal = sals.sals[0]; |
b8c9b27d | 5824 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 5825 | |
c906108c SS |
5826 | if (*arg) |
5827 | error ("Junk at end of arguments."); | |
c5aa993b | 5828 | |
c906108c | 5829 | resolve_sal_pc (&sal); |
c5aa993b | 5830 | |
ae66c1fc EZ |
5831 | if (anywhere) |
5832 | /* If the user told us to continue until a specified location, | |
5833 | we don't specify a frame at which we need to stop. */ | |
5834 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
5835 | else | |
5836 | /* Otherwise, specify the current frame, because we want to stop only | |
5837 | at the very same frame. */ | |
5838 | breakpoint = set_momentary_breakpoint (sal, | |
5839 | get_frame_id (deprecated_selected_frame), | |
5840 | bp_until); | |
c5aa993b | 5841 | |
6426a772 | 5842 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5843 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5844 | else |
4d6140d9 | 5845 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5846 | |
5847 | /* If we are running asynchronously, and the target supports async | |
5848 | execution, we are not waiting for the target to stop, in the call | |
5849 | tp proceed, below. This means that we cannot delete the | |
5850 | brekpoints until the target has actually stopped. The only place | |
5851 | where we get a chance to do that is in fetch_inferior_event, so | |
5852 | we must set things up for that. */ | |
5853 | ||
6426a772 | 5854 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 5855 | { |
0d06e24b JM |
5856 | /* In this case the arg for the continuation is just the point |
5857 | in the exec_cleanups chain from where to start doing | |
5858 | cleanups, because all the continuation does is the cleanups in | |
5859 | the exec_cleanup_chain. */ | |
5860 | arg1 = | |
5861 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5862 | arg1->next = NULL; |
5863 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5864 | |
5865 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5866 | } |
c906108c | 5867 | |
ae66c1fc EZ |
5868 | /* Keep within the current frame, or in frames called by the current |
5869 | one. */ | |
c906108c SS |
5870 | if (prev_frame) |
5871 | { | |
30f7db39 AC |
5872 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
5873 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
5874 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
5875 | bp_until); | |
6426a772 | 5876 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5877 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5878 | else |
4d6140d9 | 5879 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5880 | } |
c5aa993b | 5881 | |
c906108c | 5882 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5883 | /* Do the cleanups now, anly if we are not running asynchronously, |
5884 | of if we are, but the target is still synchronous. */ | |
6426a772 | 5885 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 5886 | do_cleanups (old_chain); |
c906108c | 5887 | } |
ae66c1fc | 5888 | |
c906108c | 5889 | static void |
fba45db2 | 5890 | ep_skip_leading_whitespace (char **s) |
c906108c | 5891 | { |
c5aa993b JM |
5892 | if ((s == NULL) || (*s == NULL)) |
5893 | return; | |
5894 | while (isspace (**s)) | |
5895 | *s += 1; | |
c906108c | 5896 | } |
c5aa993b | 5897 | |
c906108c SS |
5898 | /* This function examines a string, and attempts to find a token |
5899 | that might be an event name in the leading characters. If a | |
5900 | possible match is found, a pointer to the last character of | |
5901 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5902 | |
c906108c | 5903 | static char * |
fba45db2 | 5904 | ep_find_event_name_end (char *arg) |
c906108c | 5905 | { |
c5aa993b JM |
5906 | char *s = arg; |
5907 | char *event_name_end = NULL; | |
5908 | ||
c906108c SS |
5909 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5910 | if (arg == NULL) | |
5911 | return NULL; | |
c5aa993b | 5912 | |
c906108c | 5913 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5914 | Basically, we're looking for alphanumerics and underscores; |
5915 | anything else delimites the token. */ | |
c906108c SS |
5916 | while (*s != '\0') |
5917 | { | |
c5aa993b JM |
5918 | if (!isalnum (*s) && (*s != '_')) |
5919 | break; | |
c906108c SS |
5920 | event_name_end = s; |
5921 | s++; | |
5922 | } | |
c5aa993b | 5923 | |
c906108c SS |
5924 | return event_name_end; |
5925 | } | |
5926 | ||
c5aa993b | 5927 | |
c906108c SS |
5928 | /* This function attempts to parse an optional "if <cond>" clause |
5929 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5930 | |
c906108c SS |
5931 | Else, it returns a pointer to the condition string. (It does not |
5932 | attempt to evaluate the string against a particular block.) And, | |
5933 | it updates arg to point to the first character following the parsed | |
5934 | if clause in the arg string. */ | |
53a5351d | 5935 | |
c906108c | 5936 | static char * |
fba45db2 | 5937 | ep_parse_optional_if_clause (char **arg) |
c906108c | 5938 | { |
c5aa993b JM |
5939 | char *cond_string; |
5940 | ||
5941 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5942 | return NULL; |
c5aa993b | 5943 | |
c906108c SS |
5944 | /* Skip the "if" keyword. */ |
5945 | (*arg) += 2; | |
c5aa993b | 5946 | |
c906108c SS |
5947 | /* Skip any extra leading whitespace, and record the start of the |
5948 | condition string. */ | |
5949 | ep_skip_leading_whitespace (arg); | |
5950 | cond_string = *arg; | |
c5aa993b | 5951 | |
c906108c SS |
5952 | /* Assume that the condition occupies the remainder of the arg string. */ |
5953 | (*arg) += strlen (cond_string); | |
c5aa993b | 5954 | |
c906108c SS |
5955 | return cond_string; |
5956 | } | |
c5aa993b | 5957 | |
c906108c SS |
5958 | /* This function attempts to parse an optional filename from the arg |
5959 | string. If one is not found, it returns NULL. | |
c5aa993b | 5960 | |
c906108c SS |
5961 | Else, it returns a pointer to the parsed filename. (This function |
5962 | makes no attempt to verify that a file of that name exists, or is | |
5963 | accessible.) And, it updates arg to point to the first character | |
5964 | following the parsed filename in the arg string. | |
c5aa993b | 5965 | |
c906108c SS |
5966 | Note that clients needing to preserve the returned filename for |
5967 | future access should copy it to their own buffers. */ | |
5968 | static char * | |
fba45db2 | 5969 | ep_parse_optional_filename (char **arg) |
c906108c | 5970 | { |
c5aa993b JM |
5971 | static char filename[1024]; |
5972 | char *arg_p = *arg; | |
5973 | int i; | |
5974 | char c; | |
5975 | ||
c906108c SS |
5976 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5977 | return NULL; | |
c5aa993b JM |
5978 | |
5979 | for (i = 0;; i++) | |
c906108c SS |
5980 | { |
5981 | c = *arg_p; | |
5982 | if (isspace (c)) | |
c5aa993b | 5983 | c = '\0'; |
c906108c SS |
5984 | filename[i] = c; |
5985 | if (c == '\0') | |
c5aa993b | 5986 | break; |
c906108c SS |
5987 | arg_p++; |
5988 | } | |
5989 | *arg = arg_p; | |
c5aa993b | 5990 | |
c906108c SS |
5991 | return filename; |
5992 | } | |
c5aa993b | 5993 | |
c906108c SS |
5994 | /* Commands to deal with catching events, such as signals, exceptions, |
5995 | process start/exit, etc. */ | |
c5aa993b JM |
5996 | |
5997 | typedef enum | |
5998 | { | |
5999 | catch_fork, catch_vfork | |
6000 | } | |
6001 | catch_fork_kind; | |
6002 | ||
c906108c | 6003 | static void |
fba45db2 KB |
6004 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6005 | int from_tty) | |
c906108c | 6006 | { |
c5aa993b JM |
6007 | char *cond_string = NULL; |
6008 | ||
c906108c | 6009 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6010 | |
c906108c | 6011 | /* The allowed syntax is: |
c5aa993b JM |
6012 | catch [v]fork |
6013 | catch [v]fork if <cond> | |
6014 | ||
c906108c SS |
6015 | First, check if there's an if clause. */ |
6016 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6017 | |
c906108c SS |
6018 | if ((*arg != '\0') && !isspace (*arg)) |
6019 | error ("Junk at end of arguments."); | |
c5aa993b | 6020 | |
c906108c SS |
6021 | /* If this target supports it, create a fork or vfork catchpoint |
6022 | and enable reporting of such events. */ | |
c5aa993b JM |
6023 | switch (fork_kind) |
6024 | { | |
6025 | case catch_fork: | |
c906108c SS |
6026 | create_fork_event_catchpoint (tempflag, cond_string); |
6027 | break; | |
c5aa993b | 6028 | case catch_vfork: |
c906108c SS |
6029 | create_vfork_event_catchpoint (tempflag, cond_string); |
6030 | break; | |
c5aa993b | 6031 | default: |
c906108c SS |
6032 | error ("unsupported or unknown fork kind; cannot catch it"); |
6033 | break; | |
c5aa993b | 6034 | } |
c906108c SS |
6035 | } |
6036 | ||
6037 | static void | |
fba45db2 | 6038 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6039 | { |
c5aa993b | 6040 | char *cond_string = NULL; |
c906108c SS |
6041 | |
6042 | ep_skip_leading_whitespace (&arg); | |
6043 | ||
6044 | /* The allowed syntax is: | |
c5aa993b JM |
6045 | catch exec |
6046 | catch exec if <cond> | |
c906108c SS |
6047 | |
6048 | First, check if there's an if clause. */ | |
6049 | cond_string = ep_parse_optional_if_clause (&arg); | |
6050 | ||
6051 | if ((*arg != '\0') && !isspace (*arg)) | |
6052 | error ("Junk at end of arguments."); | |
6053 | ||
6054 | /* If this target supports it, create an exec catchpoint | |
6055 | and enable reporting of such events. */ | |
6056 | create_exec_event_catchpoint (tempflag, cond_string); | |
6057 | } | |
c5aa993b | 6058 | |
c906108c | 6059 | static void |
fba45db2 | 6060 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6061 | { |
c5aa993b JM |
6062 | char *dll_pathname = NULL; |
6063 | char *cond_string = NULL; | |
6064 | ||
c906108c | 6065 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6066 | |
c906108c | 6067 | /* The allowed syntax is: |
c5aa993b JM |
6068 | catch load |
6069 | catch load if <cond> | |
6070 | catch load <filename> | |
6071 | catch load <filename> if <cond> | |
6072 | ||
c906108c SS |
6073 | The user is not allowed to specify the <filename> after an |
6074 | if clause. | |
c5aa993b | 6075 | |
c906108c | 6076 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6077 | |
c906108c SS |
6078 | First, check if there's an if clause. If so, then there |
6079 | cannot be a filename. */ | |
6080 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6081 | |
c906108c SS |
6082 | /* If there was an if clause, then there cannot be a filename. |
6083 | Else, there might be a filename and an if clause. */ | |
6084 | if (cond_string == NULL) | |
6085 | { | |
6086 | dll_pathname = ep_parse_optional_filename (&arg); | |
6087 | ep_skip_leading_whitespace (&arg); | |
6088 | cond_string = ep_parse_optional_if_clause (&arg); | |
6089 | } | |
c5aa993b | 6090 | |
c906108c SS |
6091 | if ((*arg != '\0') && !isspace (*arg)) |
6092 | error ("Junk at end of arguments."); | |
c5aa993b | 6093 | |
c906108c SS |
6094 | /* Create a load breakpoint that only triggers when a load of |
6095 | the specified dll (or any dll, if no pathname was specified) | |
6096 | occurs. */ | |
39f77062 | 6097 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6098 | dll_pathname, cond_string); |
c906108c | 6099 | } |
c5aa993b | 6100 | |
c906108c | 6101 | static void |
fba45db2 | 6102 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6103 | { |
c5aa993b JM |
6104 | char *dll_pathname = NULL; |
6105 | char *cond_string = NULL; | |
6106 | ||
c906108c | 6107 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6108 | |
c906108c | 6109 | /* The allowed syntax is: |
c5aa993b JM |
6110 | catch unload |
6111 | catch unload if <cond> | |
6112 | catch unload <filename> | |
6113 | catch unload <filename> if <cond> | |
6114 | ||
c906108c SS |
6115 | The user is not allowed to specify the <filename> after an |
6116 | if clause. | |
c5aa993b | 6117 | |
c906108c | 6118 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6119 | |
c906108c SS |
6120 | First, check if there's an if clause. If so, then there |
6121 | cannot be a filename. */ | |
6122 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6123 | |
c906108c SS |
6124 | /* If there was an if clause, then there cannot be a filename. |
6125 | Else, there might be a filename and an if clause. */ | |
6126 | if (cond_string == NULL) | |
6127 | { | |
6128 | dll_pathname = ep_parse_optional_filename (&arg); | |
6129 | ep_skip_leading_whitespace (&arg); | |
6130 | cond_string = ep_parse_optional_if_clause (&arg); | |
6131 | } | |
c5aa993b | 6132 | |
c906108c SS |
6133 | if ((*arg != '\0') && !isspace (*arg)) |
6134 | error ("Junk at end of arguments."); | |
c5aa993b | 6135 | |
c906108c SS |
6136 | /* Create an unload breakpoint that only triggers when an unload of |
6137 | the specified dll (or any dll, if no pathname was specified) | |
6138 | occurs. */ | |
39f77062 | 6139 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6140 | dll_pathname, cond_string); |
c906108c | 6141 | } |
c906108c SS |
6142 | |
6143 | /* Commands to deal with catching exceptions. */ | |
6144 | ||
6145 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6146 | exception event callback */ |
c906108c SS |
6147 | |
6148 | static void | |
fba45db2 KB |
6149 | create_exception_catchpoint (int tempflag, char *cond_string, |
6150 | enum exception_event_kind ex_event, | |
6151 | struct symtab_and_line *sal) | |
c906108c | 6152 | { |
c5aa993b | 6153 | struct breakpoint *b; |
c5aa993b | 6154 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6155 | enum bptype bptype; |
c906108c | 6156 | |
c5aa993b | 6157 | if (!sal) /* no exception support? */ |
c906108c SS |
6158 | return; |
6159 | ||
c906108c SS |
6160 | switch (ex_event) |
6161 | { | |
c5aa993b | 6162 | case EX_EVENT_THROW: |
4d28f7a8 | 6163 | bptype = bp_catch_throw; |
c5aa993b JM |
6164 | break; |
6165 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6166 | bptype = bp_catch_catch; |
c5aa993b JM |
6167 | break; |
6168 | default: /* error condition */ | |
c5aa993b | 6169 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6170 | } |
4d28f7a8 KB |
6171 | |
6172 | b = set_raw_breakpoint (*sal, bptype); | |
6173 | set_breakpoint_count (breakpoint_count + 1); | |
6174 | b->number = breakpoint_count; | |
6175 | b->cond = NULL; | |
6176 | b->cond_string = (cond_string == NULL) ? | |
6177 | NULL : savestring (cond_string, strlen (cond_string)); | |
6178 | b->thread = thread; | |
6179 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6180 | b->enable_state = bp_enabled; |
6181 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6182 | mention (b); |
6183 | } | |
6184 | ||
3086aeae DJ |
6185 | static enum print_stop_action |
6186 | print_exception_catchpoint (struct breakpoint *b) | |
6187 | { | |
6188 | annotate_catchpoint (b->number); | |
6189 | ||
6190 | if (strstr (b->addr_string, "throw") != NULL) | |
6191 | printf_filtered ("\nCatchpoint %d (exception thrown)\n", | |
6192 | b->number); | |
6193 | else | |
6194 | printf_filtered ("\nCatchpoint %d (exception caught)\n", | |
6195 | b->number); | |
6196 | ||
6197 | return PRINT_SRC_AND_LOC; | |
6198 | } | |
6199 | ||
6200 | static void | |
6201 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6202 | { | |
6203 | if (addressprint) | |
6204 | { | |
6205 | annotate_field (4); | |
5cab636d | 6206 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6207 | } |
6208 | annotate_field (5); | |
5cab636d | 6209 | *last_addr = b->loc->address; |
3086aeae DJ |
6210 | if (strstr (b->addr_string, "throw") != NULL) |
6211 | ui_out_field_string (uiout, "what", "exception throw"); | |
6212 | else | |
6213 | ui_out_field_string (uiout, "what", "exception catch"); | |
6214 | } | |
6215 | ||
6216 | static void | |
6217 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6218 | { | |
6219 | if (strstr (b->addr_string, "throw") != NULL) | |
6220 | printf_filtered ("Catchpoint %d (throw)", b->number); | |
6221 | else | |
6222 | printf_filtered ("Catchpoint %d (catch)", b->number); | |
6223 | } | |
6224 | ||
6225 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6226 | print_exception_catchpoint, | |
6227 | print_one_exception_catchpoint, | |
6228 | print_mention_exception_catchpoint | |
6229 | }; | |
6230 | ||
6231 | static int | |
6232 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6233 | enum exception_event_kind ex_event, int from_tty) | |
6234 | { | |
6235 | char *trigger_func_name, *nameptr; | |
6236 | struct symtabs_and_lines sals; | |
6237 | struct breakpoint *b; | |
6238 | ||
6239 | if (ex_event == EX_EVENT_CATCH) | |
6240 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6241 | else | |
6242 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6243 | ||
6244 | nameptr = trigger_func_name; | |
68219205 | 6245 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6246 | if (sals.nelts == 0) |
6247 | { | |
b59661bd | 6248 | xfree (trigger_func_name); |
3086aeae DJ |
6249 | return 0; |
6250 | } | |
6251 | ||
6252 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6253 | set_breakpoint_count (breakpoint_count + 1); | |
6254 | b->number = breakpoint_count; | |
6255 | b->cond = NULL; | |
6256 | b->cond_string = (cond_string == NULL) ? | |
6257 | NULL : savestring (cond_string, strlen (cond_string)); | |
6258 | b->thread = -1; | |
6259 | b->addr_string = trigger_func_name; | |
6260 | b->enable_state = bp_enabled; | |
6261 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6262 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6263 | ||
b59661bd | 6264 | xfree (sals.sals); |
3086aeae DJ |
6265 | mention (b); |
6266 | return 1; | |
6267 | } | |
6268 | ||
c5aa993b | 6269 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6270 | |
6271 | static void | |
fba45db2 KB |
6272 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6273 | int tempflag, int from_tty) | |
c906108c | 6274 | { |
c5aa993b JM |
6275 | char *cond_string = NULL; |
6276 | struct symtab_and_line *sal = NULL; | |
6277 | ||
c906108c | 6278 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6279 | |
c906108c SS |
6280 | cond_string = ep_parse_optional_if_clause (&arg); |
6281 | ||
6282 | if ((*arg != '\0') && !isspace (*arg)) | |
6283 | error ("Junk at end of arguments."); | |
6284 | ||
6285 | if ((ex_event != EX_EVENT_THROW) && | |
6286 | (ex_event != EX_EVENT_CATCH)) | |
6287 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6288 | ||
3086aeae DJ |
6289 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6290 | return; | |
6291 | ||
c906108c SS |
6292 | /* See if we can find a callback routine */ |
6293 | sal = target_enable_exception_callback (ex_event, 1); | |
6294 | ||
c5aa993b | 6295 | if (sal) |
c906108c SS |
6296 | { |
6297 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6298 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6299 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6300 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6301 | else |
53a5351d | 6302 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6303 | } |
c5aa993b | 6304 | |
69f567ae | 6305 | warning ("Unsupported with this platform/compiler combination."); |
c906108c SS |
6306 | } |
6307 | ||
6308 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6309 | inside a catch_errors */ | |
6310 | ||
6311 | static int | |
4efb68b1 | 6312 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6313 | { |
6314 | args_for_catchpoint_enable *args = arg; | |
6315 | struct symtab_and_line *sal; | |
b5de0fa7 | 6316 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6317 | if (sal == NULL) |
6318 | return 0; | |
6319 | else if (sal == (struct symtab_and_line *) -1) | |
6320 | return -1; | |
6321 | else | |
c5aa993b | 6322 | return 1; /*is valid */ |
c906108c SS |
6323 | } |
6324 | ||
c906108c | 6325 | static void |
fba45db2 | 6326 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6327 | { |
c5aa993b | 6328 | |
c906108c SS |
6329 | /* The first argument may be an event name, such as "start" or "load". |
6330 | If so, then handle it as such. If it doesn't match an event name, | |
6331 | then attempt to interpret it as an exception name. (This latter is | |
6332 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6333 | |
c906108c | 6334 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6335 | char *arg1_start = arg; |
6336 | char *arg1_end; | |
6337 | int arg1_length; | |
6338 | ||
c906108c SS |
6339 | if (arg1_start == NULL) |
6340 | { | |
c5aa993b | 6341 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6342 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6343 | /* return; */ | |
c5aa993b | 6344 | /* Now, this is not allowed */ |
c906108c SS |
6345 | error ("Catch requires an event name."); |
6346 | ||
6347 | } | |
6348 | arg1_end = ep_find_event_name_end (arg1_start); | |
6349 | if (arg1_end == NULL) | |
6350 | error ("catch requires an event"); | |
6351 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6352 | |
c906108c SS |
6353 | /* Try to match what we found against known event names. */ |
6354 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6355 | { | |
6356 | error ("Catch of signal not yet implemented"); | |
6357 | } | |
6358 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6359 | { | |
53a5351d JM |
6360 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6361 | tempflag, from_tty); | |
c906108c SS |
6362 | } |
6363 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6364 | { | |
53a5351d JM |
6365 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6366 | tempflag, from_tty); | |
c906108c SS |
6367 | } |
6368 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6369 | { | |
6370 | error ("Catch of thread_start not yet implemented"); | |
6371 | } | |
6372 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6373 | { | |
6374 | error ("Catch of thread_exit not yet implemented"); | |
6375 | } | |
6376 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6377 | { | |
6378 | error ("Catch of thread_join not yet implemented"); | |
6379 | } | |
6380 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6381 | { | |
6382 | error ("Catch of start not yet implemented"); | |
6383 | } | |
6384 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6385 | { | |
6386 | error ("Catch of exit not yet implemented"); | |
6387 | } | |
6388 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6389 | { | |
c5aa993b | 6390 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6391 | } |
6392 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6393 | { | |
c5aa993b | 6394 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6395 | } |
6396 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6397 | { | |
c5aa993b | 6398 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6399 | } |
6400 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6401 | { | |
c5aa993b | 6402 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6403 | } |
6404 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6405 | { | |
c5aa993b | 6406 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6407 | } |
6408 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6409 | { | |
6410 | error ("Catch of stop not yet implemented"); | |
6411 | } | |
c5aa993b | 6412 | |
c906108c SS |
6413 | /* This doesn't appear to be an event name */ |
6414 | ||
6415 | else | |
6416 | { | |
6417 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6418 | as the name of an exception */ |
c906108c | 6419 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6420 | /* Now this is not allowed */ |
c906108c SS |
6421 | error ("Unknown event kind specified for catch"); |
6422 | ||
6423 | } | |
6424 | } | |
6425 | ||
6426 | /* Used by the gui, could be made a worker for other things. */ | |
6427 | ||
6428 | struct breakpoint * | |
fba45db2 | 6429 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6430 | { |
6431 | struct breakpoint *b; | |
4d28f7a8 | 6432 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6433 | set_breakpoint_count (breakpoint_count + 1); |
6434 | b->number = breakpoint_count; | |
c906108c SS |
6435 | b->cond = 0; |
6436 | b->thread = -1; | |
6437 | return b; | |
6438 | } | |
6439 | ||
c906108c | 6440 | static void |
fba45db2 | 6441 | catch_command (char *arg, int from_tty) |
c906108c SS |
6442 | { |
6443 | catch_command_1 (arg, 0, from_tty); | |
6444 | } | |
6445 | \f | |
6446 | ||
6447 | static void | |
fba45db2 | 6448 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6449 | { |
6450 | catch_command_1 (arg, 1, from_tty); | |
6451 | } | |
6452 | ||
80f8a6eb | 6453 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6454 | |
6455 | static void | |
fba45db2 | 6456 | clear_command (char *arg, int from_tty) |
c906108c | 6457 | { |
80f8a6eb | 6458 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6459 | int default_match; |
6460 | struct symtabs_and_lines sals; | |
6461 | struct symtab_and_line sal; | |
c906108c SS |
6462 | int i; |
6463 | ||
6464 | if (arg) | |
6465 | { | |
6466 | sals = decode_line_spec (arg, 1); | |
6467 | default_match = 0; | |
6468 | } | |
6469 | else | |
6470 | { | |
c5aa993b | 6471 | sals.sals = (struct symtab_and_line *) |
c906108c | 6472 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6473 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6474 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6475 | sal.line = default_breakpoint_line; |
6476 | sal.symtab = default_breakpoint_symtab; | |
6477 | sal.pc = default_breakpoint_address; | |
6478 | if (sal.symtab == 0) | |
6479 | error ("No source file specified."); | |
6480 | ||
6481 | sals.sals[0] = sal; | |
6482 | sals.nelts = 1; | |
6483 | ||
6484 | default_match = 1; | |
6485 | } | |
6486 | ||
6487 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6488 | to it. Do it in two passes, solely to preserve the current |
6489 | behavior that from_tty is forced true if we delete more than | |
6490 | one breakpoint. */ | |
c906108c | 6491 | |
80f8a6eb | 6492 | found = NULL; |
c906108c SS |
6493 | for (i = 0; i < sals.nelts; i++) |
6494 | { | |
6495 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6496 | If line given (pc == 0), clear all bpts on specified line. |
6497 | If defaulting, clear all bpts on default line | |
c906108c | 6498 | or at default pc. |
c5aa993b JM |
6499 | |
6500 | defaulting sal.pc != 0 tests to do | |
6501 | ||
6502 | 0 1 pc | |
6503 | 1 1 pc _and_ line | |
6504 | 0 0 line | |
6505 | 1 0 <can't happen> */ | |
c906108c SS |
6506 | |
6507 | sal = sals.sals[i]; | |
80f8a6eb | 6508 | prev = NULL; |
c906108c | 6509 | |
80f8a6eb MS |
6510 | /* Find all matching breakpoints, remove them from the |
6511 | breakpoint chain, and add them to the 'found' chain. */ | |
6512 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6513 | { |
80f8a6eb MS |
6514 | /* Are we going to delete b? */ |
6515 | if (b->type != bp_none | |
6516 | && b->type != bp_watchpoint | |
6517 | && b->type != bp_hardware_watchpoint | |
6518 | && b->type != bp_read_watchpoint | |
6519 | && b->type != bp_access_watchpoint | |
6520 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6521 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6522 | && (!section_is_overlay (b->loc->section) |
6523 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6524 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6525 | || ((default_match || (0 == sal.pc)) | |
6526 | && b->source_file != NULL | |
6527 | && sal.symtab != NULL | |
6314a349 | 6528 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
80f8a6eb MS |
6529 | && b->line_number == sal.line))) |
6530 | /* Yes, if sal source file and line matches b. */ | |
6531 | { | |
6532 | /* Remove it from breakpoint_chain... */ | |
6533 | if (b == breakpoint_chain) | |
6534 | { | |
6535 | /* b is at the head of the list */ | |
6536 | breakpoint_chain = b->next; | |
6537 | } | |
6538 | else | |
6539 | { | |
6540 | prev->next = b->next; | |
6541 | } | |
6542 | /* And add it to 'found' chain. */ | |
6543 | b->next = found; | |
6544 | found = b; | |
6545 | } | |
c906108c | 6546 | else |
80f8a6eb MS |
6547 | { |
6548 | /* Keep b, and keep a pointer to it. */ | |
6549 | prev = b; | |
6550 | } | |
c906108c | 6551 | } |
80f8a6eb MS |
6552 | } |
6553 | /* Now go thru the 'found' chain and delete them. */ | |
6554 | if (found == 0) | |
6555 | { | |
6556 | if (arg) | |
6557 | error ("No breakpoint at %s.", arg); | |
6558 | else | |
6559 | error ("No breakpoint at this line."); | |
6560 | } | |
c906108c | 6561 | |
80f8a6eb MS |
6562 | if (found->next) |
6563 | from_tty = 1; /* Always report if deleted more than one */ | |
6564 | if (from_tty) | |
6565 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6566 | breakpoints_changed (); | |
6567 | while (found) | |
6568 | { | |
c5aa993b | 6569 | if (from_tty) |
80f8a6eb MS |
6570 | printf_unfiltered ("%d ", found->number); |
6571 | tmp = found->next; | |
6572 | delete_breakpoint (found); | |
6573 | found = tmp; | |
c906108c | 6574 | } |
80f8a6eb MS |
6575 | if (from_tty) |
6576 | putchar_unfiltered ('\n'); | |
c906108c SS |
6577 | } |
6578 | \f | |
6579 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6580 | all breakpoints that are marked for deletion, whether hit or not. | |
6581 | This is called after any breakpoint is hit, or after errors. */ | |
6582 | ||
6583 | void | |
fba45db2 | 6584 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6585 | { |
6586 | struct breakpoint *b, *temp; | |
6587 | ||
6588 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6589 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6590 | && bs->stop) |
6591 | delete_breakpoint (bs->breakpoint_at); | |
6592 | ||
6593 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6594 | { |
b5de0fa7 | 6595 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6596 | delete_breakpoint (b); |
6597 | } | |
c906108c SS |
6598 | } |
6599 | ||
53a5351d JM |
6600 | /* Delete a breakpoint and clean up all traces of it in the data |
6601 | structures. */ | |
c906108c SS |
6602 | |
6603 | void | |
fba45db2 | 6604 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6605 | { |
52f0bd74 AC |
6606 | struct breakpoint *b; |
6607 | bpstat bs; | |
7cc221ef | 6608 | struct bp_location *loc; |
c906108c SS |
6609 | |
6610 | if (bpt == NULL) | |
6611 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6612 | ||
6613 | ||
6614 | /* Has this bp already been deleted? This can happen because multiple | |
6615 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6616 | ||
6617 | One example of this happening is a watchpoint's scope bp. When the | |
6618 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6619 | delete it. We also delete its scope bp. But the scope bp is marked | |
6620 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6621 | checked for auto-deleting bp's, which are deleted. | |
6622 | ||
6623 | A real solution to this problem might involve reference counts in bp's, | |
6624 | and/or giving them pointers back to their referencing bpstat's, and | |
6625 | teaching delete_breakpoint to only free a bp's storage when no more | |
6626 | references were extent. A cheaper bandaid was chosen. */ | |
6627 | if (bpt->type == bp_none) | |
6628 | return; | |
6629 | ||
6630 | if (delete_breakpoint_hook) | |
6631 | delete_breakpoint_hook (bpt); | |
104c1213 | 6632 | breakpoint_delete_event (bpt->number); |
c906108c | 6633 | |
5cab636d | 6634 | if (bpt->loc->inserted) |
0bde7532 | 6635 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6636 | |
c906108c SS |
6637 | if (breakpoint_chain == bpt) |
6638 | breakpoint_chain = bpt->next; | |
6639 | ||
7cc221ef DJ |
6640 | if (bp_location_chain == bpt->loc) |
6641 | bp_location_chain = bpt->loc->next; | |
6642 | ||
c906108c SS |
6643 | /* If we have callback-style exception catchpoints, don't go through |
6644 | the adjustments to the C++ runtime library etc. if the inferior | |
6645 | isn't actually running. target_enable_exception_callback for a | |
6646 | null target ops vector gives an undesirable error message, so we | |
6647 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6648 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6649 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6650 | { | |
53a5351d | 6651 | /* Format possible error msg */ |
9ebf4acf AC |
6652 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6653 | bpt->number); | |
6654 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
6655 | args_for_catchpoint_enable args; | |
53a5351d JM |
6656 | args.kind = bpt->type == bp_catch_catch ? |
6657 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6658 | args.enable_p = 0; |
c906108c SS |
6659 | catch_errors (cover_target_enable_exception_callback, &args, |
6660 | message, RETURN_MASK_ALL); | |
9ebf4acf | 6661 | do_cleanups (cleanups); |
c906108c SS |
6662 | } |
6663 | ||
6664 | ||
6665 | ALL_BREAKPOINTS (b) | |
6666 | if (b->next == bpt) | |
c5aa993b JM |
6667 | { |
6668 | b->next = bpt->next; | |
6669 | break; | |
6670 | } | |
c906108c | 6671 | |
7cc221ef DJ |
6672 | ALL_BP_LOCATIONS (loc) |
6673 | if (loc->next == bpt->loc) | |
6674 | { | |
6675 | loc->next = bpt->loc->next; | |
6676 | break; | |
6677 | } | |
6678 | ||
9f60f21b | 6679 | check_duplicates (bpt); |
c906108c SS |
6680 | /* If this breakpoint was inserted, and there is another breakpoint |
6681 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 6682 | if (bpt->loc->inserted |
c906108c SS |
6683 | && bpt->type != bp_hardware_watchpoint |
6684 | && bpt->type != bp_read_watchpoint | |
6685 | && bpt->type != bp_access_watchpoint | |
6686 | && bpt->type != bp_catch_fork | |
6687 | && bpt->type != bp_catch_vfork | |
6688 | && bpt->type != bp_catch_exec) | |
6689 | { | |
6690 | ALL_BREAKPOINTS (b) | |
5cab636d | 6691 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 6692 | && b->loc->section == bpt->loc->section |
5cab636d | 6693 | && !b->loc->duplicate |
b5de0fa7 EZ |
6694 | && b->enable_state != bp_disabled |
6695 | && b->enable_state != bp_shlib_disabled | |
6696 | && b->enable_state != bp_call_disabled) | |
c5aa993b JM |
6697 | { |
6698 | int val; | |
53a5351d | 6699 | |
c2c6d25f JM |
6700 | /* We should never reach this point if there is a permanent |
6701 | breakpoint at the same address as the one being deleted. | |
6702 | If there is a permanent breakpoint somewhere, it should | |
6703 | always be the only one inserted. */ | |
b5de0fa7 | 6704 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6705 | internal_error (__FILE__, __LINE__, |
6706 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6707 | "a permanent breakpoint"); |
6708 | ||
53a5351d | 6709 | if (b->type == bp_hardware_breakpoint) |
5cab636d | 6710 | val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6711 | else |
5cab636d | 6712 | val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6713 | |
81d0cc19 | 6714 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6715 | if (val != 0) |
6716 | { | |
81d0cc19 GS |
6717 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6718 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6719 | ||
6720 | ||
6721 | if (b->type == bp_hardware_breakpoint) | |
6722 | { | |
6723 | fprintf_unfiltered (tmp_error_stream, | |
6724 | "Cannot insert hardware breakpoint %d.\n" | |
6725 | "You may have requested too many hardware breakpoints.\n", | |
6726 | b->number); | |
6727 | } | |
6728 | else | |
6729 | { | |
6730 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6731 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
5cab636d | 6732 | print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
6733 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
6734 | safe_strerror (val)); | |
6735 | } | |
6736 | ||
6737 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6738 | target_terminal_ours_for_output (); |
81d0cc19 | 6739 | error_stream(tmp_error_stream); |
c5aa993b JM |
6740 | } |
6741 | else | |
5cab636d | 6742 | b->loc->inserted = 1; |
c5aa993b | 6743 | } |
c906108c SS |
6744 | } |
6745 | ||
6746 | free_command_lines (&bpt->commands); | |
6747 | if (bpt->cond) | |
b8c9b27d | 6748 | xfree (bpt->cond); |
c906108c | 6749 | if (bpt->cond_string != NULL) |
b8c9b27d | 6750 | xfree (bpt->cond_string); |
c906108c | 6751 | if (bpt->addr_string != NULL) |
b8c9b27d | 6752 | xfree (bpt->addr_string); |
c906108c | 6753 | if (bpt->exp != NULL) |
b8c9b27d | 6754 | xfree (bpt->exp); |
c906108c | 6755 | if (bpt->exp_string != NULL) |
b8c9b27d | 6756 | xfree (bpt->exp_string); |
c906108c SS |
6757 | if (bpt->val != NULL) |
6758 | value_free (bpt->val); | |
6759 | if (bpt->source_file != NULL) | |
b8c9b27d | 6760 | xfree (bpt->source_file); |
c906108c | 6761 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6762 | xfree (bpt->dll_pathname); |
c906108c | 6763 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6764 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6765 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6766 | xfree (bpt->exec_pathname); |
c906108c SS |
6767 | |
6768 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6769 | /* FIXME, how can we find all bpstat's? | |
6770 | We just check stop_bpstat for now. */ | |
6771 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6772 | if (bs->breakpoint_at == bpt) | |
6773 | { | |
6774 | bs->breakpoint_at = NULL; | |
c906108c | 6775 | bs->old_val = NULL; |
c2b8ed2c | 6776 | /* bs->commands will be freed later. */ |
c906108c SS |
6777 | } |
6778 | /* On the chance that someone will soon try again to delete this same | |
6779 | bp, we mark it as deleted before freeing its storage. */ | |
6780 | bpt->type = bp_none; | |
6781 | ||
5cab636d | 6782 | xfree (bpt->loc); |
b8c9b27d | 6783 | xfree (bpt); |
c906108c SS |
6784 | } |
6785 | ||
4d6140d9 AC |
6786 | static void |
6787 | do_delete_breakpoint_cleanup (void *b) | |
6788 | { | |
6789 | delete_breakpoint (b); | |
6790 | } | |
6791 | ||
6792 | struct cleanup * | |
6793 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6794 | { | |
6795 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6796 | } | |
6797 | ||
6798 | struct cleanup * | |
6799 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6800 | { | |
6801 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6802 | } | |
6803 | ||
c906108c | 6804 | void |
fba45db2 | 6805 | delete_command (char *arg, int from_tty) |
c906108c SS |
6806 | { |
6807 | struct breakpoint *b, *temp; | |
6808 | ||
ea9365bb TT |
6809 | dont_repeat (); |
6810 | ||
c906108c SS |
6811 | if (arg == 0) |
6812 | { | |
6813 | int breaks_to_delete = 0; | |
6814 | ||
6815 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6816 | Do not delete internal or call-dummy breakpoints, these |
6817 | have to be deleted with an explicit breakpoint number argument. */ | |
6818 | ALL_BREAKPOINTS (b) | |
6819 | { | |
6820 | if (b->type != bp_call_dummy && | |
6821 | b->type != bp_shlib_event && | |
c4093a6a | 6822 | b->type != bp_thread_event && |
1900040c | 6823 | b->type != bp_overlay_event && |
c5aa993b JM |
6824 | b->number >= 0) |
6825 | breaks_to_delete = 1; | |
6826 | } | |
c906108c SS |
6827 | |
6828 | /* Ask user only if there are some breakpoints to delete. */ | |
6829 | if (!from_tty | |
6830 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6831 | { | |
c5aa993b JM |
6832 | ALL_BREAKPOINTS_SAFE (b, temp) |
6833 | { | |
6834 | if (b->type != bp_call_dummy && | |
6835 | b->type != bp_shlib_event && | |
c4093a6a | 6836 | b->type != bp_thread_event && |
1900040c | 6837 | b->type != bp_overlay_event && |
c5aa993b JM |
6838 | b->number >= 0) |
6839 | delete_breakpoint (b); | |
6840 | } | |
c906108c SS |
6841 | } |
6842 | } | |
6843 | else | |
6844 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6845 | } | |
6846 | ||
6847 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6848 | The value we return ends up being the return value from catch_errors. | |
6849 | Unused in this case. */ | |
6850 | ||
6851 | static int | |
4efb68b1 | 6852 | breakpoint_re_set_one (void *bint) |
c906108c | 6853 | { |
53a5351d JM |
6854 | /* get past catch_errs */ |
6855 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6856 | struct value *mark; |
6857 | int i; | |
6858 | struct symtabs_and_lines sals; | |
6859 | char *s; | |
b5de0fa7 | 6860 | enum enable_state save_enable; |
c906108c SS |
6861 | |
6862 | switch (b->type) | |
6863 | { | |
6864 | case bp_none: | |
53a5351d JM |
6865 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6866 | b->number); | |
c906108c SS |
6867 | return 0; |
6868 | case bp_breakpoint: | |
6869 | case bp_hardware_breakpoint: | |
6870 | case bp_catch_load: | |
6871 | case bp_catch_unload: | |
6872 | if (b->addr_string == NULL) | |
6873 | { | |
6874 | /* Anything without a string can't be re-set. */ | |
6875 | delete_breakpoint (b); | |
6876 | return 0; | |
6877 | } | |
b18c45ed AC |
6878 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
6879 | ||
6880 | ``And a hack it is, although Apple's Darwin version of GDB | |
6881 | contains an almost identical hack to implement a "future | |
6882 | break" command. It seems to work in many real world cases, | |
6883 | but it is easy to come up with a test case where the patch | |
6884 | doesn't help at all.'' | |
6885 | ||
6886 | ``It seems that the way GDB implements breakpoints - in - | |
6887 | shared - libraries was designed for a.out shared library | |
6888 | systems (SunOS 4) where shared libraries were loaded at a | |
6889 | fixed address in memory. Since ELF shared libraries can (and | |
6890 | will) be loaded at any address in memory, things break. | |
6891 | Fixing this is not trivial. Therefore, I'm not sure whether | |
6892 | we should add this hack to the branch only. I cannot | |
6893 | guarantee that things will be fixed on the trunk in the near | |
6894 | future.'' | |
6895 | ||
6896 | In case we have a problem, disable this breakpoint. We'll | |
6897 | restore its status if we succeed. Don't disable a | |
6898 | shlib_disabled breakpoint though. There's a fair chance we | |
6899 | can't re-set it if the shared library it's in hasn't been | |
6900 | loaded yet. */ | |
b5de0fa7 | 6901 | save_enable = b->enable_state; |
b18c45ed AC |
6902 | if (b->enable_state != bp_shlib_disabled) |
6903 | b->enable_state = bp_disabled; | |
c906108c SS |
6904 | |
6905 | set_language (b->language); | |
6906 | input_radix = b->input_radix; | |
6907 | s = b->addr_string; | |
68219205 | 6908 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
6909 | for (i = 0; i < sals.nelts; i++) |
6910 | { | |
6911 | resolve_sal_pc (&sals.sals[i]); | |
6912 | ||
6913 | /* Reparse conditions, they might contain references to the | |
6914 | old symtab. */ | |
6915 | if (b->cond_string != NULL) | |
6916 | { | |
6917 | s = b->cond_string; | |
6918 | if (b->cond) | |
fad0733a DJ |
6919 | { |
6920 | xfree (b->cond); | |
6921 | /* Avoid re-freeing b->exp if an error during the call | |
6922 | to parse_exp_1. */ | |
6923 | b->cond = NULL; | |
6924 | } | |
c906108c SS |
6925 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
6926 | } | |
6927 | ||
c5aa993b | 6928 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 6929 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
6930 | /* ...or new and old breakpoints both have source files, and |
6931 | the source file name or the line number changes... */ | |
c906108c SS |
6932 | || (b->source_file != NULL |
6933 | && sals.sals[i].symtab != NULL | |
6314a349 | 6934 | && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0 |
c906108c | 6935 | || b->line_number != sals.sals[i].line) |
c906108c | 6936 | ) |
c5aa993b JM |
6937 | /* ...or we switch between having a source file and not having |
6938 | one. */ | |
6939 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
6940 | ) | |
c906108c SS |
6941 | { |
6942 | if (b->source_file != NULL) | |
b8c9b27d | 6943 | xfree (b->source_file); |
c906108c SS |
6944 | if (sals.sals[i].symtab == NULL) |
6945 | b->source_file = NULL; | |
6946 | else | |
6947 | b->source_file = | |
6948 | savestring (sals.sals[i].symtab->filename, | |
6949 | strlen (sals.sals[i].symtab->filename)); | |
6950 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
6951 | b->loc->requested_address = sals.sals[i].pc; |
6952 | b->loc->address | |
6953 | = adjust_breakpoint_address (b->loc->requested_address); | |
c906108c | 6954 | |
c5aa993b | 6955 | /* Used to check for duplicates here, but that can |
261c4ca2 | 6956 | cause trouble, as it doesn't check for disabled |
c5aa993b | 6957 | breakpoints. */ |
c906108c SS |
6958 | |
6959 | mention (b); | |
6960 | ||
6961 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 6962 | rather than once for every breakpoint. */ |
c906108c SS |
6963 | breakpoints_changed (); |
6964 | } | |
cf3a9e5b | 6965 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 6966 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
6967 | |
6968 | ||
c5aa993b | 6969 | /* Now that this is re-enabled, check_duplicates |
c906108c | 6970 | can be used. */ |
9f60f21b | 6971 | check_duplicates (b); |
c906108c SS |
6972 | |
6973 | } | |
b8c9b27d | 6974 | xfree (sals.sals); |
c906108c SS |
6975 | break; |
6976 | ||
6977 | case bp_watchpoint: | |
6978 | case bp_hardware_watchpoint: | |
6979 | case bp_read_watchpoint: | |
6980 | case bp_access_watchpoint: | |
6981 | innermost_block = NULL; | |
53a5351d JM |
6982 | /* The issue arises of what context to evaluate this in. The |
6983 | same one as when it was set, but what does that mean when | |
6984 | symbols have been re-read? We could save the filename and | |
6985 | functionname, but if the context is more local than that, the | |
6986 | best we could do would be something like how many levels deep | |
6987 | and which index at that particular level, but that's going to | |
6988 | be less stable than filenames or function names. */ | |
6989 | ||
c906108c SS |
6990 | /* So for now, just use a global context. */ |
6991 | if (b->exp) | |
a355c7de AC |
6992 | { |
6993 | xfree (b->exp); | |
6994 | /* Avoid re-freeing b->exp if an error during the call to | |
6995 | parse_expression. */ | |
6996 | b->exp = NULL; | |
6997 | } | |
c906108c SS |
6998 | b->exp = parse_expression (b->exp_string); |
6999 | b->exp_valid_block = innermost_block; | |
7000 | mark = value_mark (); | |
7001 | if (b->val) | |
a355c7de AC |
7002 | { |
7003 | value_free (b->val); | |
7004 | /* Avoid re-freeing b->val if an error during the call to | |
7005 | evaluate_expression. */ | |
7006 | b->val = NULL; | |
7007 | } | |
c906108c SS |
7008 | b->val = evaluate_expression (b->exp); |
7009 | release_value (b->val); | |
468d015d | 7010 | if (VALUE_LAZY (b->val) && breakpoint_enabled (b)) |
c906108c SS |
7011 | value_fetch_lazy (b->val); |
7012 | ||
7013 | if (b->cond_string != NULL) | |
7014 | { | |
7015 | s = b->cond_string; | |
7016 | if (b->cond) | |
a355c7de AC |
7017 | { |
7018 | xfree (b->cond); | |
7019 | /* Avoid re-freeing b->exp if an error during the call | |
7020 | to parse_exp_1. */ | |
7021 | b->cond = NULL; | |
7022 | } | |
c5aa993b | 7023 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7024 | } |
468d015d | 7025 | if (breakpoint_enabled (b)) |
c906108c SS |
7026 | mention (b); |
7027 | value_free_to_mark (mark); | |
7028 | break; | |
c5aa993b JM |
7029 | case bp_catch_catch: |
7030 | case bp_catch_throw: | |
c906108c | 7031 | break; |
c5aa993b JM |
7032 | /* We needn't really do anything to reset these, since the mask |
7033 | that requests them is unaffected by e.g., new libraries being | |
7034 | loaded. */ | |
c906108c SS |
7035 | case bp_catch_fork: |
7036 | case bp_catch_vfork: | |
7037 | case bp_catch_exec: | |
7038 | break; | |
c5aa993b | 7039 | |
c906108c SS |
7040 | default: |
7041 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7042 | /* fall through */ | |
1900040c MS |
7043 | /* Delete longjmp and overlay event breakpoints; they will be |
7044 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7045 | case bp_longjmp: |
7046 | case bp_longjmp_resume: | |
1900040c | 7047 | case bp_overlay_event: |
c906108c SS |
7048 | delete_breakpoint (b); |
7049 | break; | |
7050 | ||
c5aa993b JM |
7051 | /* This breakpoint is special, it's set up when the inferior |
7052 | starts and we really don't want to touch it. */ | |
c906108c SS |
7053 | case bp_shlib_event: |
7054 | ||
c4093a6a JM |
7055 | /* Like bp_shlib_event, this breakpoint type is special. |
7056 | Once it is set up, we do not want to touch it. */ | |
7057 | case bp_thread_event: | |
7058 | ||
c5aa993b JM |
7059 | /* Keep temporary breakpoints, which can be encountered when we step |
7060 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7061 | Otherwise these should have been blown away via the cleanup chain | |
7062 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7063 | case bp_until: |
7064 | case bp_finish: | |
7065 | case bp_watchpoint_scope: | |
7066 | case bp_call_dummy: | |
7067 | case bp_step_resume: | |
7068 | break; | |
7069 | } | |
7070 | ||
7071 | return 0; | |
7072 | } | |
7073 | ||
7074 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7075 | void | |
fba45db2 | 7076 | breakpoint_re_set (void) |
c906108c SS |
7077 | { |
7078 | struct breakpoint *b, *temp; | |
7079 | enum language save_language; | |
7080 | int save_input_radix; | |
c5aa993b | 7081 | |
c906108c SS |
7082 | save_language = current_language->la_language; |
7083 | save_input_radix = input_radix; | |
7084 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7085 | { |
53a5351d | 7086 | /* Format possible error msg */ |
9ebf4acf AC |
7087 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7088 | b->number); | |
7089 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7090 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7091 | do_cleanups (cleanups); |
c5aa993b | 7092 | } |
c906108c SS |
7093 | set_language (save_language); |
7094 | input_radix = save_input_radix; | |
7095 | ||
9df628e0 RE |
7096 | if (GET_LONGJMP_TARGET_P ()) |
7097 | { | |
7098 | create_longjmp_breakpoint ("longjmp"); | |
7099 | create_longjmp_breakpoint ("_longjmp"); | |
7100 | create_longjmp_breakpoint ("siglongjmp"); | |
7101 | create_longjmp_breakpoint ("_siglongjmp"); | |
7102 | create_longjmp_breakpoint (NULL); | |
7103 | } | |
1900040c MS |
7104 | |
7105 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7106 | } |
7107 | \f | |
c906108c SS |
7108 | /* Reset the thread number of this breakpoint: |
7109 | ||
7110 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7111 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7112 | void |
fba45db2 | 7113 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7114 | { |
7115 | if (b->thread != -1) | |
7116 | { | |
39f77062 KB |
7117 | if (in_thread_list (inferior_ptid)) |
7118 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7119 | } |
7120 | } | |
7121 | ||
03ac34d5 MS |
7122 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7123 | If from_tty is nonzero, it prints a message to that effect, | |
7124 | which ends with a period (no newline). */ | |
7125 | ||
c906108c | 7126 | void |
fba45db2 | 7127 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7128 | { |
52f0bd74 | 7129 | struct breakpoint *b; |
c906108c SS |
7130 | |
7131 | if (count < 0) | |
7132 | count = 0; | |
7133 | ||
7134 | ALL_BREAKPOINTS (b) | |
7135 | if (b->number == bptnum) | |
c5aa993b JM |
7136 | { |
7137 | b->ignore_count = count; | |
221ea385 KS |
7138 | if (from_tty) |
7139 | { | |
7140 | if (count == 0) | |
7141 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7142 | bptnum); | |
7143 | else if (count == 1) | |
7144 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7145 | bptnum); | |
7146 | else | |
7147 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7148 | count, bptnum); | |
7149 | } | |
c5aa993b | 7150 | breakpoints_changed (); |
221ea385 | 7151 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7152 | return; |
7153 | } | |
c906108c SS |
7154 | |
7155 | error ("No breakpoint number %d.", bptnum); | |
7156 | } | |
7157 | ||
7158 | /* Clear the ignore counts of all breakpoints. */ | |
7159 | void | |
fba45db2 | 7160 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7161 | { |
7162 | struct breakpoint *b; | |
7163 | ||
7164 | ALL_BREAKPOINTS (b) | |
7165 | b->ignore_count = 0; | |
7166 | } | |
7167 | ||
7168 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7169 | ||
7170 | static void | |
fba45db2 | 7171 | ignore_command (char *args, int from_tty) |
c906108c SS |
7172 | { |
7173 | char *p = args; | |
52f0bd74 | 7174 | int num; |
c906108c SS |
7175 | |
7176 | if (p == 0) | |
7177 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7178 | |
c906108c | 7179 | num = get_number (&p); |
5c44784c JM |
7180 | if (num == 0) |
7181 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7182 | if (*p == 0) |
7183 | error ("Second argument (specified ignore-count) is missing."); | |
7184 | ||
7185 | set_ignore_count (num, | |
7186 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7187 | from_tty); | |
221ea385 KS |
7188 | if (from_tty) |
7189 | printf_filtered ("\n"); | |
c906108c SS |
7190 | } |
7191 | \f | |
7192 | /* Call FUNCTION on each of the breakpoints | |
7193 | whose numbers are given in ARGS. */ | |
7194 | ||
7195 | static void | |
831662b3 | 7196 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7197 | { |
52f0bd74 | 7198 | char *p = args; |
c906108c | 7199 | char *p1; |
52f0bd74 AC |
7200 | int num; |
7201 | struct breakpoint *b, *tmp; | |
11cf8741 | 7202 | int match; |
c906108c SS |
7203 | |
7204 | if (p == 0) | |
7205 | error_no_arg ("one or more breakpoint numbers"); | |
7206 | ||
7207 | while (*p) | |
7208 | { | |
11cf8741 | 7209 | match = 0; |
c906108c | 7210 | p1 = p; |
c5aa993b | 7211 | |
5c44784c JM |
7212 | num = get_number_or_range (&p1); |
7213 | if (num == 0) | |
c5aa993b | 7214 | { |
5c44784c JM |
7215 | warning ("bad breakpoint number at or near '%s'", p); |
7216 | } | |
7217 | else | |
7218 | { | |
7219 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7220 | if (b->number == num) | |
7221 | { | |
7222 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7223 | match = 1; |
5c44784c JM |
7224 | function (b); |
7225 | if (related_breakpoint) | |
7226 | function (related_breakpoint); | |
11cf8741 | 7227 | break; |
5c44784c | 7228 | } |
11cf8741 JM |
7229 | if (match == 0) |
7230 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7231 | } |
c906108c SS |
7232 | p = p1; |
7233 | } | |
7234 | } | |
7235 | ||
1900040c MS |
7236 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7237 | If from_tty is nonzero, it prints a message to that effect, | |
7238 | which ends with a period (no newline). */ | |
7239 | ||
c906108c | 7240 | void |
fba45db2 | 7241 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7242 | { |
7243 | /* Never disable a watchpoint scope breakpoint; we want to | |
7244 | hit them when we leave scope so we can delete both the | |
7245 | watchpoint and its scope breakpoint at that time. */ | |
7246 | if (bpt->type == bp_watchpoint_scope) | |
7247 | return; | |
7248 | ||
c2c6d25f | 7249 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7250 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7251 | return; |
7252 | ||
b5de0fa7 | 7253 | bpt->enable_state = bp_disabled; |
c906108c | 7254 | |
9f60f21b | 7255 | check_duplicates (bpt); |
c906108c SS |
7256 | |
7257 | if (modify_breakpoint_hook) | |
7258 | modify_breakpoint_hook (bpt); | |
104c1213 | 7259 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7260 | } |
7261 | ||
c906108c | 7262 | static void |
fba45db2 | 7263 | disable_command (char *args, int from_tty) |
c906108c | 7264 | { |
52f0bd74 | 7265 | struct breakpoint *bpt; |
c906108c SS |
7266 | if (args == 0) |
7267 | ALL_BREAKPOINTS (bpt) | |
7268 | switch (bpt->type) | |
c5aa993b JM |
7269 | { |
7270 | case bp_none: | |
53a5351d JM |
7271 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7272 | bpt->number); | |
c5aa993b JM |
7273 | continue; |
7274 | case bp_breakpoint: | |
7275 | case bp_catch_load: | |
7276 | case bp_catch_unload: | |
7277 | case bp_catch_fork: | |
7278 | case bp_catch_vfork: | |
7279 | case bp_catch_exec: | |
7280 | case bp_catch_catch: | |
7281 | case bp_catch_throw: | |
7282 | case bp_hardware_breakpoint: | |
7283 | case bp_watchpoint: | |
7284 | case bp_hardware_watchpoint: | |
7285 | case bp_read_watchpoint: | |
7286 | case bp_access_watchpoint: | |
7287 | disable_breakpoint (bpt); | |
7288 | default: | |
7289 | continue; | |
7290 | } | |
c906108c SS |
7291 | else |
7292 | map_breakpoint_numbers (args, disable_breakpoint); | |
7293 | } | |
7294 | ||
7295 | static void | |
fba45db2 | 7296 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7297 | { |
7298 | struct frame_info *save_selected_frame = NULL; | |
7299 | int save_selected_frame_level = -1; | |
7300 | int target_resources_ok, other_type_used; | |
7301 | struct value *mark; | |
7302 | ||
7303 | if (bpt->type == bp_hardware_breakpoint) | |
7304 | { | |
7305 | int i; | |
c5aa993b | 7306 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7307 | target_resources_ok = |
7308 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7309 | i + 1, 0); | |
c906108c | 7310 | if (target_resources_ok == 0) |
c5aa993b | 7311 | error ("No hardware breakpoint support in the target."); |
c906108c | 7312 | else if (target_resources_ok < 0) |
c5aa993b | 7313 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7314 | } |
7315 | ||
b5de0fa7 EZ |
7316 | if (bpt->enable_state != bp_permanent) |
7317 | bpt->enable_state = bp_enabled; | |
c906108c | 7318 | bpt->disposition = disposition; |
9f60f21b | 7319 | check_duplicates (bpt); |
c906108c SS |
7320 | breakpoints_changed (); |
7321 | ||
53a5351d JM |
7322 | if (bpt->type == bp_watchpoint || |
7323 | bpt->type == bp_hardware_watchpoint || | |
7324 | bpt->type == bp_read_watchpoint || | |
7325 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7326 | { |
7327 | if (bpt->exp_valid_block != NULL) | |
7328 | { | |
7329 | struct frame_info *fr = | |
101dcfbe | 7330 | fr = frame_find_by_id (bpt->watchpoint_frame); |
c906108c SS |
7331 | if (fr == NULL) |
7332 | { | |
7333 | printf_filtered ("\ | |
7334 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7335 | is valid is not currently in scope.\n", bpt->number); | |
b5de0fa7 | 7336 | bpt->enable_state = bp_disabled; |
c906108c SS |
7337 | return; |
7338 | } | |
7339 | ||
6e7f8b9c AC |
7340 | save_selected_frame = deprecated_selected_frame; |
7341 | save_selected_frame_level = frame_relative_level (deprecated_selected_frame); | |
0f7d239c | 7342 | select_frame (fr); |
c906108c SS |
7343 | } |
7344 | ||
7345 | value_free (bpt->val); | |
7346 | mark = value_mark (); | |
7347 | bpt->val = evaluate_expression (bpt->exp); | |
7348 | release_value (bpt->val); | |
7349 | if (VALUE_LAZY (bpt->val)) | |
7350 | value_fetch_lazy (bpt->val); | |
7351 | ||
7352 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7353 | bpt->type == bp_read_watchpoint || |
7354 | bpt->type == bp_access_watchpoint) | |
7355 | { | |
7356 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7357 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7358 | ||
7359 | /* Hack around 'unused var' error for some targets here */ | |
7360 | (void) mem_cnt, i; | |
7361 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7362 | bpt->type, i + mem_cnt, other_type_used); | |
7363 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7364 | bp_watchpoint in the following condition */ | |
7365 | if (target_resources_ok < 0) | |
7366 | { | |
7367 | printf_filtered ("\ | |
c906108c SS |
7368 | Cannot enable watchpoint %d because target watch resources\n\ |
7369 | have been allocated for other watchpoints.\n", bpt->number); | |
b5de0fa7 | 7370 | bpt->enable_state = bp_disabled; |
c5aa993b JM |
7371 | value_free_to_mark (mark); |
7372 | return; | |
7373 | } | |
7374 | } | |
c906108c SS |
7375 | |
7376 | if (save_selected_frame_level >= 0) | |
0f7d239c | 7377 | select_frame (save_selected_frame); |
c906108c SS |
7378 | value_free_to_mark (mark); |
7379 | } | |
7380 | if (modify_breakpoint_hook) | |
7381 | modify_breakpoint_hook (bpt); | |
104c1213 | 7382 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7383 | } |
7384 | ||
7385 | void | |
fba45db2 | 7386 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7387 | { |
7388 | do_enable_breakpoint (bpt, bpt->disposition); | |
7389 | } | |
7390 | ||
7391 | /* The enable command enables the specified breakpoints (or all defined | |
7392 | breakpoints) so they once again become (or continue to be) effective | |
7393 | in stopping the inferior. */ | |
7394 | ||
c906108c | 7395 | static void |
fba45db2 | 7396 | enable_command (char *args, int from_tty) |
c906108c | 7397 | { |
52f0bd74 | 7398 | struct breakpoint *bpt; |
c906108c SS |
7399 | if (args == 0) |
7400 | ALL_BREAKPOINTS (bpt) | |
7401 | switch (bpt->type) | |
c5aa993b JM |
7402 | { |
7403 | case bp_none: | |
53a5351d JM |
7404 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7405 | bpt->number); | |
c5aa993b JM |
7406 | continue; |
7407 | case bp_breakpoint: | |
7408 | case bp_catch_load: | |
7409 | case bp_catch_unload: | |
7410 | case bp_catch_fork: | |
7411 | case bp_catch_vfork: | |
7412 | case bp_catch_exec: | |
7413 | case bp_catch_catch: | |
7414 | case bp_catch_throw: | |
7415 | case bp_hardware_breakpoint: | |
7416 | case bp_watchpoint: | |
7417 | case bp_hardware_watchpoint: | |
7418 | case bp_read_watchpoint: | |
7419 | case bp_access_watchpoint: | |
7420 | enable_breakpoint (bpt); | |
7421 | default: | |
7422 | continue; | |
7423 | } | |
c906108c SS |
7424 | else |
7425 | map_breakpoint_numbers (args, enable_breakpoint); | |
7426 | } | |
7427 | ||
7428 | static void | |
fba45db2 | 7429 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7430 | { |
b5de0fa7 | 7431 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7432 | } |
7433 | ||
c906108c | 7434 | static void |
fba45db2 | 7435 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7436 | { |
7437 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7438 | } | |
7439 | ||
7440 | static void | |
fba45db2 | 7441 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7442 | { |
b5de0fa7 | 7443 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7444 | } |
7445 | ||
c906108c | 7446 | static void |
fba45db2 | 7447 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7448 | { |
7449 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7450 | } | |
7451 | \f | |
7452 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7453 | ||
7454 | struct symtabs_and_lines | |
fba45db2 | 7455 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7456 | { |
7457 | struct symtabs_and_lines sals; | |
7458 | if (string == 0) | |
7459 | error ("Empty line specification."); | |
7460 | if (default_breakpoint_valid) | |
7461 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7462 | default_breakpoint_symtab, |
7463 | default_breakpoint_line, | |
68219205 | 7464 | (char ***) NULL, NULL); |
c906108c SS |
7465 | else |
7466 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7467 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
7468 | if (*string) |
7469 | error ("Junk at end of line specification: %s", string); | |
7470 | return sals; | |
7471 | } | |
7472 | \f | |
7473 | void | |
fba45db2 | 7474 | _initialize_breakpoint (void) |
c906108c SS |
7475 | { |
7476 | struct cmd_list_element *c; | |
7477 | ||
7478 | breakpoint_chain = 0; | |
7479 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7480 | before a breakpoint is set. */ | |
7481 | breakpoint_count = 0; | |
7482 | ||
7483 | add_com ("ignore", class_breakpoint, ignore_command, | |
7484 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7485 | Usage is `ignore N COUNT'."); | |
7486 | if (xdb_commands) | |
c5aa993b | 7487 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7488 | |
7489 | add_com ("commands", class_breakpoint, commands_command, | |
7490 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7491 | Give breakpoint number as argument after \"commands\".\n\ | |
7492 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7493 | The commands themselves follow starting on the next line.\n\ | |
7494 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7495 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7496 | then no output is printed when it is hit, except what the commands print."); | |
7497 | ||
7498 | add_com ("condition", class_breakpoint, condition_command, | |
7499 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7500 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7501 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7502 | |
c94fdfd0 EZ |
7503 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7504 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7505 | Like \"break\" except the breakpoint is only temporary,\n\ |
7506 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7507 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7508 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7509 | |
c94fdfd0 EZ |
7510 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7511 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7512 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7513 | some target hardware may not have this support."); | |
5ba2abeb | 7514 | set_cmd_completer (c, location_completer); |
c906108c | 7515 | |
c94fdfd0 EZ |
7516 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7517 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7518 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7519 | so it will be deleted when hit."); | |
5ba2abeb | 7520 | set_cmd_completer (c, location_completer); |
c906108c SS |
7521 | |
7522 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7523 | "Enable some breakpoints.\n\ | |
7524 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7525 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7526 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7527 | With a subcommand you can enable temporarily.", | |
7528 | &enablelist, "enable ", 1, &cmdlist); | |
7529 | if (xdb_commands) | |
c5aa993b JM |
7530 | add_com ("ab", class_breakpoint, enable_command, |
7531 | "Enable some breakpoints.\n\ | |
c906108c SS |
7532 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7533 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7534 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7535 | With a subcommand you can enable temporarily."); | |
7536 | ||
7537 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7538 | ||
7539 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7540 | "Enable some breakpoints.\n\ |
c906108c SS |
7541 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7542 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7543 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7544 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7545 | |
7546 | add_cmd ("once", no_class, enable_once_command, | |
7547 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7548 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7549 | &enablebreaklist); | |
7550 | ||
7551 | add_cmd ("delete", no_class, enable_delete_command, | |
7552 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7553 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7554 | &enablebreaklist); | |
7555 | ||
7556 | add_cmd ("delete", no_class, enable_delete_command, | |
7557 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7558 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7559 | &enablelist); | |
7560 | ||
7561 | add_cmd ("once", no_class, enable_once_command, | |
7562 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7563 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7564 | &enablelist); | |
7565 | ||
7566 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7567 | "Disable some breakpoints.\n\ |
c906108c SS |
7568 | Arguments are breakpoint numbers with spaces in between.\n\ |
7569 | To disable all breakpoints, give no argument.\n\ | |
7570 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7571 | &disablelist, "disable ", 1, &cmdlist); | |
7572 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7573 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7574 | if (xdb_commands) | |
c5aa993b JM |
7575 | add_com ("sb", class_breakpoint, disable_command, |
7576 | "Disable some breakpoints.\n\ | |
c906108c SS |
7577 | Arguments are breakpoint numbers with spaces in between.\n\ |
7578 | To disable all breakpoints, give no argument.\n\ | |
7579 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7580 | ||
7581 | add_cmd ("breakpoints", class_alias, disable_command, | |
7582 | "Disable some breakpoints.\n\ | |
7583 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7584 | To disable all breakpoints, give no argument.\n\ | |
7585 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7586 | This command may be abbreviated \"disable\".", | |
7587 | &disablelist); | |
7588 | ||
7589 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7590 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7591 | Arguments are breakpoint numbers with spaces in between.\n\ |
7592 | To delete all breakpoints, give no argument.\n\ | |
7593 | \n\ | |
7594 | Also a prefix command for deletion of other GDB objects.\n\ | |
7595 | The \"unset\" command is also an alias for \"delete\".", | |
7596 | &deletelist, "delete ", 1, &cmdlist); | |
7597 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7598 | if (xdb_commands) | |
7599 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7600 | "Delete some breakpoints.\n\ |
c906108c SS |
7601 | Arguments are breakpoint numbers with spaces in between.\n\ |
7602 | To delete all breakpoints, give no argument.\n"); | |
7603 | ||
7604 | add_cmd ("breakpoints", class_alias, delete_command, | |
7605 | "Delete some breakpoints or auto-display expressions.\n\ | |
7606 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7607 | To delete all breakpoints, give no argument.\n\ | |
7608 | This command may be abbreviated \"delete\".", | |
7609 | &deletelist); | |
7610 | ||
7611 | add_com ("clear", class_breakpoint, clear_command, | |
7612 | concat ("Clear breakpoint at specified line or function.\n\ | |
7613 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7614 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7615 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7616 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7617 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7618 | is executing in.\n\ |
7619 | \n\ | |
7620 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7621 | ||
c94fdfd0 EZ |
7622 | c = add_com ("break", class_breakpoint, break_command, |
7623 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7624 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7625 | If line number is specified, break at start of code for that line.\n\ | |
7626 | If function is specified, break at start of code for that function.\n\ | |
7627 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7628 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7629 | This is useful for breaking on return to a stack frame.\n\ |
7630 | \n\ | |
7631 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7632 | \n\ | |
7633 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7634 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7635 | |
c906108c SS |
7636 | add_com_alias ("b", "break", class_run, 1); |
7637 | add_com_alias ("br", "break", class_run, 1); | |
7638 | add_com_alias ("bre", "break", class_run, 1); | |
7639 | add_com_alias ("brea", "break", class_run, 1); | |
7640 | ||
502fd408 | 7641 | if (xdb_commands) |
c906108c SS |
7642 | { |
7643 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7644 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7645 | } |
7646 | ||
7647 | if (dbx_commands) | |
7648 | { | |
c5aa993b JM |
7649 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7650 | "Break in function/address or break at a line in the current file.", | |
7651 | &stoplist, "stop ", 1, &cmdlist); | |
7652 | add_cmd ("in", class_breakpoint, stopin_command, | |
7653 | "Break in function or address.\n", &stoplist); | |
7654 | add_cmd ("at", class_breakpoint, stopat_command, | |
7655 | "Break at a line in the current file.\n", &stoplist); | |
7656 | add_com ("status", class_info, breakpoints_info, | |
7657 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7658 | The \"Type\" column indicates one of:\n\ |
7659 | \tbreakpoint - normal breakpoint\n\ | |
7660 | \twatchpoint - watchpoint\n\ | |
7661 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7662 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7663 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7664 | address and file/line number respectively.\n\n", | |
c5aa993b | 7665 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7666 | are set to the address of the last breakpoint listed.\n\n\ |
7667 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7668 | breakpoint set.", NULL)); | |
7669 | } | |
7670 | ||
7671 | add_info ("breakpoints", breakpoints_info, | |
7672 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7673 | The \"Type\" column indicates one of:\n\ | |
7674 | \tbreakpoint - normal breakpoint\n\ | |
7675 | \twatchpoint - watchpoint\n\ | |
7676 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7677 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7678 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7679 | address and file/line number respectively.\n\n", | |
c5aa993b | 7680 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7681 | are set to the address of the last breakpoint listed.\n\n\ |
7682 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7683 | breakpoint set.", NULL)); | |
7684 | ||
7685 | if (xdb_commands) | |
c5aa993b JM |
7686 | add_com ("lb", class_breakpoint, breakpoints_info, |
7687 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7688 | The \"Type\" column indicates one of:\n\ |
7689 | \tbreakpoint - normal breakpoint\n\ | |
7690 | \twatchpoint - watchpoint\n\ | |
7691 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7692 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7693 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7694 | address and file/line number respectively.\n\n", | |
c5aa993b | 7695 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7696 | are set to the address of the last breakpoint listed.\n\n\ |
7697 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7698 | breakpoint set.", NULL)); | |
7699 | ||
c906108c | 7700 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7701 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7702 | The \"Type\" column indicates one of:\n\ |
7703 | \tbreakpoint - normal breakpoint\n\ | |
7704 | \twatchpoint - watchpoint\n\ | |
7705 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7706 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7707 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7708 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7709 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7710 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7711 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7712 | address and file/line number respectively.\n\n", | |
c5aa993b | 7713 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7714 | are set to the address of the last breakpoint listed.\n\n\ |
7715 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7716 | breakpoint set.", NULL), | |
7717 | &maintenanceinfolist); | |
7718 | ||
c906108c | 7719 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7720 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7721 | Raised signals may be caught:\n\ |
7722 | \tcatch signal - all signals\n\ | |
7723 | \tcatch signal <signame> - a particular signal\n\ | |
7724 | Raised exceptions may be caught:\n\ | |
7725 | \tcatch throw - all exceptions, when thrown\n\ | |
7726 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7727 | \tcatch catch - all exceptions, when caught\n\ | |
7728 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7729 | Thread or process events may be caught:\n\ | |
7730 | \tcatch thread_start - any threads, just after creation\n\ | |
7731 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7732 | \tcatch thread_join - any threads, just after joins\n\ | |
7733 | Process events may be caught:\n\ | |
7734 | \tcatch start - any processes, just after creation\n\ | |
7735 | \tcatch exit - any processes, just before expiration\n\ | |
7736 | \tcatch fork - calls to fork()\n\ | |
7737 | \tcatch vfork - calls to vfork()\n\ | |
7738 | \tcatch exec - calls to exec()\n\ | |
7739 | Dynamically-linked library events may be caught:\n\ | |
7740 | \tcatch load - loads of any library\n\ | |
7741 | \tcatch load <libname> - loads of a particular library\n\ | |
7742 | \tcatch unload - unloads of any library\n\ | |
7743 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7744 | The act of your program's execution stopping may also be caught:\n\ | |
7745 | \tcatch stop\n\n\ | |
7746 | C++ exceptions may be caught:\n\ | |
7747 | \tcatch throw - all exceptions, when thrown\n\ | |
7748 | \tcatch catch - all exceptions, when caught\n\ | |
7749 | \n\ | |
7750 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7751 | after a fork or vfork is caught.\n\n\ | |
7752 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7753 | |
c906108c | 7754 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7755 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7756 | Args like \"catch\" command.\n\ |
7757 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7758 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7759 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 7760 | |
c94fdfd0 EZ |
7761 | c = add_com ("watch", class_breakpoint, watch_command, |
7762 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7763 | A watchpoint stops execution of your program whenever the value of\n\ |
7764 | an expression changes."); | |
5ba2abeb | 7765 | set_cmd_completer (c, location_completer); |
c906108c | 7766 | |
c94fdfd0 EZ |
7767 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
7768 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
7769 | A watchpoint stops execution of your program whenever the value of\n\ |
7770 | an expression is read."); | |
5ba2abeb | 7771 | set_cmd_completer (c, location_completer); |
c906108c | 7772 | |
c94fdfd0 EZ |
7773 | c = add_com ("awatch", class_breakpoint, awatch_command, |
7774 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7775 | A watchpoint stops execution of your program whenever the value of\n\ |
7776 | an expression is either read or written."); | |
5ba2abeb | 7777 | set_cmd_completer (c, location_completer); |
c906108c SS |
7778 | |
7779 | add_info ("watchpoints", breakpoints_info, | |
7780 | "Synonym for ``info breakpoints''."); | |
7781 | ||
7782 | ||
7783 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7784 | (char *) &can_use_hw_watchpoints, |
7785 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7786 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7787 | such is available. (However, any hardware watchpoints that were\n\ | |
7788 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7789 | hardware.)", | |
c5aa993b | 7790 | &setlist); |
c906108c SS |
7791 | add_show_from_set (c, &showlist); |
7792 | ||
7793 | can_use_hw_watchpoints = 1; | |
7794 | } |