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" |
84acb35a JJ |
52 | #include "solist.h" |
53 | #include "observer.h" | |
c906108c | 54 | |
104c1213 JM |
55 | #include "gdb-events.h" |
56 | ||
c906108c SS |
57 | /* Prototypes for local functions. */ |
58 | ||
c2c6d25f JM |
59 | static void until_break_command_continuation (struct continuation_arg *arg); |
60 | ||
a14ed312 | 61 | static void catch_command_1 (char *, int, int); |
c906108c | 62 | |
a14ed312 | 63 | static void enable_delete_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 66 | |
a14ed312 | 67 | static void enable_once_command (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 70 | |
a14ed312 | 71 | static void disable_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static void enable_command (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 76 | |
a14ed312 | 77 | static void ignore_command (char *, int); |
c906108c | 78 | |
4efb68b1 | 79 | static int breakpoint_re_set_one (void *); |
c906108c | 80 | |
a14ed312 | 81 | static void clear_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void catch_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void watch_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 88 | |
0101ce28 | 89 | static int break_command_1 (char *, int, int, struct breakpoint *); |
c906108c | 90 | |
a14ed312 | 91 | static void mention (struct breakpoint *); |
c906108c | 92 | |
4d28f7a8 | 93 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 94 | |
9f60f21b | 95 | static void check_duplicates (struct breakpoint *); |
c906108c | 96 | |
76897487 KB |
97 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
98 | ||
88f7da05 KB |
99 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
100 | enum bptype bptype); | |
76897487 | 101 | |
a14ed312 | 102 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 103 | |
a14ed312 | 104 | static void breakpoints_info (char *, int); |
c906108c | 105 | |
a14ed312 | 106 | static void breakpoint_1 (int, int); |
c906108c | 107 | |
a14ed312 | 108 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 109 | |
4efb68b1 | 110 | static int breakpoint_cond_eval (void *); |
c906108c | 111 | |
4efb68b1 | 112 | static void cleanup_executing_breakpoints (void *); |
c906108c | 113 | |
a14ed312 | 114 | static void commands_command (char *, int); |
c906108c | 115 | |
a14ed312 | 116 | static void condition_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static int get_number_trailer (char **, int); |
c906108c | 119 | |
0101ce28 JJ |
120 | static int do_captured_parse_breakpoint (struct ui_out *, void *); |
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 | 179 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 180 | |
a14ed312 | 181 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 182 | |
a14ed312 | 183 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 186 | |
a14ed312 | 187 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 188 | |
a14ed312 | 189 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 190 | |
d85310f7 MS |
191 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
192 | enum exception_event_kind ex_event, | |
193 | struct symtab_and_line *sal); | |
7a292a7a | 194 | |
d85310f7 MS |
195 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
196 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 197 | |
a14ed312 | 198 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 199 | |
a14ed312 | 200 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 201 | |
c906108c SS |
202 | /* Prototypes for exported functions. */ |
203 | ||
c906108c SS |
204 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
205 | if such is available. */ | |
206 | static int can_use_hw_watchpoints; | |
207 | ||
fa8d40ab JJ |
208 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
209 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
210 | for unrecognized breakpoint locations. | |
211 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
212 | static enum auto_boolean pending_break_support; | |
213 | ||
a14ed312 | 214 | void _initialize_breakpoint (void); |
c906108c | 215 | |
c5aa993b | 216 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 217 | |
c906108c SS |
218 | /* Are we executing breakpoint commands? */ |
219 | static int executing_breakpoint_commands; | |
220 | ||
c02f5703 MS |
221 | /* Are overlay event breakpoints enabled? */ |
222 | static int overlay_events_enabled; | |
223 | ||
c906108c SS |
224 | /* Walk the following statement or block through all breakpoints. |
225 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
226 | breakpoint. */ | |
227 | ||
5c44784c | 228 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 229 | |
5c44784c JM |
230 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
231 | for (B = breakpoint_chain; \ | |
232 | B ? (TMP=B->next, 1): 0; \ | |
233 | B = TMP) | |
c906108c | 234 | |
7cc221ef DJ |
235 | /* Similar iterators for the low-level breakpoints. */ |
236 | ||
237 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
238 | ||
239 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
240 | for (B = bp_location_chain; \ | |
241 | B ? (TMP=B->next, 1): 0; \ | |
242 | B = TMP) | |
243 | ||
c906108c SS |
244 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
245 | ||
246 | int show_breakpoint_hit_counts = 1; | |
247 | ||
7cc221ef | 248 | /* Chains of all breakpoints defined. */ |
c906108c SS |
249 | |
250 | struct breakpoint *breakpoint_chain; | |
251 | ||
7cc221ef DJ |
252 | struct bp_location *bp_location_chain; |
253 | ||
c906108c SS |
254 | /* Number of last breakpoint made. */ |
255 | ||
256 | int breakpoint_count; | |
257 | ||
c5aa993b JM |
258 | /* Pointer to current exception event record */ |
259 | static struct exception_event_record *current_exception_event; | |
c906108c | 260 | |
f83f82bc AC |
261 | /* Indicator of whether exception catchpoints should be nuked between |
262 | runs of a program. */ | |
263 | int deprecated_exception_catchpoints_are_fragile = 0; | |
c5aa993b | 264 | |
c906108c | 265 | /* Indicator of when exception catchpoints set-up should be |
f83f82bc AC |
266 | reinitialized -- e.g. when program is re-run. */ |
267 | int deprecated_exception_support_initialized = 0; | |
c906108c SS |
268 | |
269 | /* This function returns a pointer to the string representation of the | |
270 | pathname of the dynamically-linked library that has just been | |
271 | loaded. | |
272 | ||
273 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
274 | or undefined results are guaranteed. | |
275 | ||
276 | This string's contents are only valid immediately after the | |
277 | inferior has stopped in the dynamic linker hook, and becomes | |
278 | invalid as soon as the inferior is continued. Clients should make | |
279 | a copy of this string if they wish to continue the inferior and | |
280 | then access the string. */ | |
281 | ||
282 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
283 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
284 | #endif | |
285 | ||
286 | /* This function returns a pointer to the string representation of the | |
287 | pathname of the dynamically-linked library that has just been | |
288 | unloaded. | |
289 | ||
290 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
291 | TRUE, or undefined results are guaranteed. | |
292 | ||
293 | This string's contents are only valid immediately after the | |
294 | inferior has stopped in the dynamic linker hook, and becomes | |
295 | invalid as soon as the inferior is continued. Clients should make | |
296 | a copy of this string if they wish to continue the inferior and | |
297 | then access the string. */ | |
298 | ||
299 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
300 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
301 | #endif | |
302 | ||
303 | /* This function is called by the "catch load" command. It allows the | |
304 | debugger to be notified by the dynamic linker when a specified | |
305 | library file (or any library file, if filename is NULL) is loaded. */ | |
306 | ||
307 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
308 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
309 | error ("catch of library loads not yet implemented on this platform") | |
310 | #endif | |
311 | ||
312 | /* This function is called by the "catch unload" command. It allows | |
313 | the debugger to be notified by the dynamic linker when a specified | |
314 | library file (or any library file, if filename is NULL) is | |
315 | unloaded. */ | |
316 | ||
317 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
318 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
319 | error ("catch of library unloads not yet implemented on this platform") | |
320 | #endif | |
321 | ||
468d015d JJ |
322 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
323 | static int | |
324 | breakpoint_enabled (struct breakpoint *b) | |
325 | { | |
0101ce28 | 326 | return (b->enable_state == bp_enabled && !b->pending); |
468d015d JJ |
327 | } |
328 | ||
c906108c SS |
329 | /* Set breakpoint count to NUM. */ |
330 | ||
331 | void | |
fba45db2 | 332 | set_breakpoint_count (int num) |
c906108c SS |
333 | { |
334 | breakpoint_count = num; | |
335 | set_internalvar (lookup_internalvar ("bpnum"), | |
336 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
337 | } | |
338 | ||
339 | /* Used in run_command to zero the hit count when a new run starts. */ | |
340 | ||
341 | void | |
fba45db2 | 342 | clear_breakpoint_hit_counts (void) |
c906108c SS |
343 | { |
344 | struct breakpoint *b; | |
345 | ||
346 | ALL_BREAKPOINTS (b) | |
347 | b->hit_count = 0; | |
348 | } | |
349 | ||
350 | /* Default address, symtab and line to put a breakpoint at | |
351 | for "break" command with no arg. | |
352 | if default_breakpoint_valid is zero, the other three are | |
353 | not valid, and "break" with no arg is an error. | |
354 | ||
355 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
356 | ||
357 | int default_breakpoint_valid; | |
358 | CORE_ADDR default_breakpoint_address; | |
359 | struct symtab *default_breakpoint_symtab; | |
360 | int default_breakpoint_line; | |
361 | \f | |
362 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
363 | Advance *PP after the string and any trailing whitespace. | |
364 | ||
365 | Currently the string can either be a number or "$" followed by the name | |
366 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
367 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
368 | ||
369 | TRAILER is a character which can be found after the number; most | |
370 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 371 | static int |
fba45db2 | 372 | get_number_trailer (char **pp, int trailer) |
c906108c | 373 | { |
5c44784c | 374 | int retval = 0; /* default */ |
c906108c SS |
375 | char *p = *pp; |
376 | ||
377 | if (p == NULL) | |
378 | /* Empty line means refer to the last breakpoint. */ | |
379 | return breakpoint_count; | |
380 | else if (*p == '$') | |
381 | { | |
382 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 383 | to pass to lookup_internalvar(). */ |
c906108c SS |
384 | char *varname; |
385 | char *start = ++p; | |
278cd55f | 386 | struct value *val; |
c906108c SS |
387 | |
388 | while (isalnum (*p) || *p == '_') | |
389 | p++; | |
390 | varname = (char *) alloca (p - start + 1); | |
391 | strncpy (varname, start, p - start); | |
392 | varname[p - start] = '\0'; | |
393 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 394 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
395 | retval = (int) value_as_long (val); |
396 | else | |
397 | { | |
398 | printf_filtered ("Convenience variable must have integer value.\n"); | |
399 | retval = 0; | |
400 | } | |
c906108c SS |
401 | } |
402 | else | |
403 | { | |
404 | if (*p == '-') | |
405 | ++p; | |
406 | while (*p >= '0' && *p <= '9') | |
407 | ++p; | |
408 | if (p == *pp) | |
409 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
410 | { |
411 | /* Skip non-numeric token */ | |
412 | while (*p && !isspace((int) *p)) | |
413 | ++p; | |
414 | /* Return zero, which caller must interpret as error. */ | |
415 | retval = 0; | |
416 | } | |
417 | else | |
418 | retval = atoi (*pp); | |
419 | } | |
420 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
421 | { | |
422 | /* Trailing junk: return 0 and let caller print error msg. */ | |
423 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
424 | ++p; | |
425 | retval = 0; | |
c906108c | 426 | } |
c906108c SS |
427 | while (isspace (*p)) |
428 | p++; | |
429 | *pp = p; | |
430 | return retval; | |
431 | } | |
5c44784c | 432 | |
11cf8741 | 433 | |
5c44784c JM |
434 | /* Like get_number_trailer, but don't allow a trailer. */ |
435 | int | |
fba45db2 | 436 | get_number (char **pp) |
5c44784c JM |
437 | { |
438 | return get_number_trailer (pp, '\0'); | |
439 | } | |
440 | ||
441 | /* Parse a number or a range. | |
442 | * A number will be of the form handled by get_number. | |
443 | * A range will be of the form <number1> - <number2>, and | |
444 | * will represent all the integers between number1 and number2, | |
445 | * inclusive. | |
446 | * | |
447 | * While processing a range, this fuction is called iteratively; | |
448 | * At each call it will return the next value in the range. | |
449 | * | |
450 | * At the beginning of parsing a range, the char pointer PP will | |
451 | * be advanced past <number1> and left pointing at the '-' token. | |
452 | * Subsequent calls will not advance the pointer until the range | |
453 | * is completed. The call that completes the range will advance | |
454 | * pointer PP past <number2>. | |
455 | */ | |
456 | ||
457 | int | |
fba45db2 | 458 | get_number_or_range (char **pp) |
5c44784c JM |
459 | { |
460 | static int last_retval, end_value; | |
461 | static char *end_ptr; | |
462 | static int in_range = 0; | |
463 | ||
464 | if (**pp != '-') | |
465 | { | |
466 | /* Default case: pp is pointing either to a solo number, | |
467 | or to the first number of a range. */ | |
468 | last_retval = get_number_trailer (pp, '-'); | |
469 | if (**pp == '-') | |
470 | { | |
471 | char **temp; | |
472 | ||
473 | /* This is the start of a range (<number1> - <number2>). | |
474 | Skip the '-', parse and remember the second number, | |
475 | and also remember the end of the final token. */ | |
476 | ||
477 | temp = &end_ptr; | |
478 | end_ptr = *pp + 1; | |
479 | while (isspace ((int) *end_ptr)) | |
480 | end_ptr++; /* skip white space */ | |
481 | end_value = get_number (temp); | |
482 | if (end_value < last_retval) | |
483 | { | |
484 | error ("inverted range"); | |
485 | } | |
486 | else if (end_value == last_retval) | |
487 | { | |
488 | /* degenerate range (number1 == number2). Advance the | |
489 | token pointer so that the range will be treated as a | |
490 | single number. */ | |
491 | *pp = end_ptr; | |
492 | } | |
493 | else | |
494 | in_range = 1; | |
495 | } | |
496 | } | |
497 | else if (! in_range) | |
498 | error ("negative value"); | |
499 | else | |
500 | { | |
501 | /* pp points to the '-' that betokens a range. All | |
502 | number-parsing has already been done. Return the next | |
503 | integer value (one greater than the saved previous value). | |
504 | Do not advance the token pointer 'pp' until the end of range | |
505 | is reached. */ | |
506 | ||
507 | if (++last_retval == end_value) | |
508 | { | |
509 | /* End of range reached; advance token pointer. */ | |
510 | *pp = end_ptr; | |
511 | in_range = 0; | |
512 | } | |
513 | } | |
514 | return last_retval; | |
515 | } | |
516 | ||
517 | ||
c906108c SS |
518 | \f |
519 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
520 | ||
521 | static void | |
fba45db2 | 522 | condition_command (char *arg, int from_tty) |
c906108c | 523 | { |
52f0bd74 | 524 | struct breakpoint *b; |
c906108c | 525 | char *p; |
52f0bd74 | 526 | int bnum; |
c906108c SS |
527 | |
528 | if (arg == 0) | |
529 | error_no_arg ("breakpoint number"); | |
530 | ||
531 | p = arg; | |
532 | bnum = get_number (&p); | |
5c44784c JM |
533 | if (bnum == 0) |
534 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
535 | |
536 | ALL_BREAKPOINTS (b) | |
537 | if (b->number == bnum) | |
c5aa993b JM |
538 | { |
539 | if (b->cond) | |
540 | { | |
b8c9b27d | 541 | xfree (b->cond); |
c5aa993b JM |
542 | b->cond = 0; |
543 | } | |
544 | if (b->cond_string != NULL) | |
b8c9b27d | 545 | xfree (b->cond_string); |
c906108c | 546 | |
c5aa993b JM |
547 | if (*p == 0) |
548 | { | |
549 | b->cond = 0; | |
550 | b->cond_string = NULL; | |
551 | if (from_tty) | |
552 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
553 | } | |
554 | else | |
555 | { | |
556 | arg = p; | |
557 | /* I don't know if it matters whether this is the string the user | |
558 | typed in or the decompiled expression. */ | |
559 | b->cond_string = savestring (arg, strlen (arg)); | |
0101ce28 JJ |
560 | if (!b->pending) |
561 | { | |
562 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
563 | if (*arg) | |
564 | error ("Junk at end of expression"); | |
565 | } | |
c5aa993b JM |
566 | } |
567 | breakpoints_changed (); | |
221ea385 | 568 | breakpoint_modify_event (b->number); |
c5aa993b JM |
569 | return; |
570 | } | |
c906108c SS |
571 | |
572 | error ("No breakpoint number %d.", bnum); | |
573 | } | |
574 | ||
c906108c | 575 | static void |
fba45db2 | 576 | commands_command (char *arg, int from_tty) |
c906108c | 577 | { |
52f0bd74 | 578 | struct breakpoint *b; |
c906108c | 579 | char *p; |
52f0bd74 | 580 | int bnum; |
c906108c SS |
581 | struct command_line *l; |
582 | ||
583 | /* If we allowed this, we would have problems with when to | |
584 | free the storage, if we change the commands currently | |
585 | being read from. */ | |
586 | ||
587 | if (executing_breakpoint_commands) | |
588 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
589 | ||
590 | p = arg; | |
591 | bnum = get_number (&p); | |
5c44784c | 592 | |
c906108c SS |
593 | if (p && *p) |
594 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 595 | |
c906108c SS |
596 | ALL_BREAKPOINTS (b) |
597 | if (b->number == bnum) | |
9ebf4acf AC |
598 | { |
599 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
600 | bnum); | |
601 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
602 | l = read_command_lines (tmpbuf, from_tty); | |
603 | do_cleanups (cleanups); | |
604 | free_command_lines (&b->commands); | |
605 | b->commands = l; | |
606 | breakpoints_changed (); | |
607 | breakpoint_modify_event (b->number); | |
608 | return; | |
c5aa993b | 609 | } |
c906108c SS |
610 | error ("No breakpoint number %d.", bnum); |
611 | } | |
612 | \f | |
613 | /* Like target_read_memory() but if breakpoints are inserted, return | |
614 | the shadow contents instead of the breakpoints themselves. | |
615 | ||
616 | Read "memory data" from whatever target or inferior we have. | |
617 | Returns zero if successful, errno value if not. EIO is used | |
618 | for address out of bounds. If breakpoints are inserted, returns | |
619 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
620 | ||
621 | int | |
1f602b35 | 622 | deprecated_read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
623 | { |
624 | int status; | |
ffce0d52 | 625 | struct bp_location *b; |
c906108c SS |
626 | CORE_ADDR bp_addr = 0; |
627 | int bp_size = 0; | |
628 | ||
629 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
630 | /* No breakpoints on this machine. */ | |
631 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 632 | |
ffce0d52 | 633 | ALL_BP_LOCATIONS (b) |
c5aa993b | 634 | { |
ffce0d52 DJ |
635 | if (b->owner->type == bp_none) |
636 | warning ("reading through apparently deleted breakpoint #%d?", | |
637 | b->owner->number); | |
638 | ||
639 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 640 | continue; |
ffce0d52 | 641 | if (!b->inserted) |
c5aa993b JM |
642 | continue; |
643 | /* Addresses and length of the part of the breakpoint that | |
644 | we need to copy. */ | |
645 | /* XXXX The m68k, sh and h8300 have different local and remote | |
646 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
647 | correctly determine the breakpoints memory address and size | |
648 | for these targets. */ | |
ffce0d52 | 649 | bp_addr = b->address; |
c5aa993b JM |
650 | bp_size = 0; |
651 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
652 | continue; | |
653 | if (bp_size == 0) | |
654 | /* bp isn't valid */ | |
655 | continue; | |
656 | if (bp_addr + bp_size <= memaddr) | |
657 | /* The breakpoint is entirely before the chunk of memory we | |
658 | are reading. */ | |
659 | continue; | |
660 | if (bp_addr >= memaddr + len) | |
661 | /* The breakpoint is entirely after the chunk of memory we are | |
662 | reading. */ | |
663 | continue; | |
664 | /* Copy the breakpoint from the shadow contents, and recurse for | |
665 | the things before and after. */ | |
c906108c | 666 | { |
c5aa993b JM |
667 | /* Offset within shadow_contents. */ |
668 | int bptoffset = 0; | |
c906108c | 669 | |
c5aa993b JM |
670 | if (bp_addr < memaddr) |
671 | { | |
672 | /* Only copy the second part of the breakpoint. */ | |
673 | bp_size -= memaddr - bp_addr; | |
674 | bptoffset = memaddr - bp_addr; | |
675 | bp_addr = memaddr; | |
676 | } | |
677 | ||
678 | if (bp_addr + bp_size > memaddr + len) | |
679 | { | |
680 | /* Only copy the first part of the breakpoint. */ | |
681 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
682 | } | |
683 | ||
684 | memcpy (myaddr + bp_addr - memaddr, | |
ffce0d52 | 685 | b->shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
686 | |
687 | if (bp_addr > memaddr) | |
688 | { | |
689 | /* Copy the section of memory before the breakpoint. */ | |
1f602b35 | 690 | status = deprecated_read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); |
c5aa993b JM |
691 | if (status != 0) |
692 | return status; | |
693 | } | |
694 | ||
695 | if (bp_addr + bp_size < memaddr + len) | |
696 | { | |
697 | /* Copy the section of memory after the breakpoint. */ | |
1f602b35 | 698 | status = deprecated_read_memory_nobpt (bp_addr + bp_size, |
d85310f7 MS |
699 | myaddr + bp_addr + bp_size - memaddr, |
700 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
701 | if (status != 0) |
702 | return status; | |
703 | } | |
704 | return 0; | |
c906108c | 705 | } |
c5aa993b | 706 | } |
c906108c SS |
707 | /* Nothing overlaps. Just call read_memory_noerr. */ |
708 | return target_read_memory (memaddr, myaddr, len); | |
709 | } | |
c906108c | 710 | \f |
c5aa993b | 711 | |
687595f9 | 712 | /* A wrapper function for inserting catchpoints. */ |
3f8091c1 | 713 | static int |
687595f9 DJ |
714 | insert_catchpoint (struct ui_out *uo, void *args) |
715 | { | |
716 | struct breakpoint *b = (struct breakpoint *) args; | |
717 | int val = -1; | |
718 | ||
719 | switch (b->type) | |
720 | { | |
721 | case bp_catch_fork: | |
722 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
723 | break; | |
724 | case bp_catch_vfork: | |
725 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
726 | break; | |
727 | case bp_catch_exec: | |
728 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); | |
729 | break; | |
730 | default: | |
1171114a | 731 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); |
687595f9 DJ |
732 | break; |
733 | } | |
734 | ||
735 | if (val < 0) | |
736 | throw_exception (RETURN_ERROR); | |
737 | ||
738 | return 0; | |
739 | } | |
740 | ||
7270d8f2 OF |
741 | /* Helper routine: free the value chain for a breakpoint (watchpoint). */ |
742 | ||
743 | static void free_valchain (struct bp_location *b) | |
744 | { | |
745 | struct value *v; | |
746 | struct value *n; | |
747 | ||
748 | /* Free the saved value chain. We will construct a new one | |
749 | the next time the watchpoint is inserted. */ | |
750 | for (v = b->owner->val_chain; v; v = n) | |
751 | { | |
752 | n = v->next; | |
753 | value_free (v); | |
754 | } | |
755 | b->owner->val_chain = NULL; | |
756 | } | |
757 | ||
879bfdc2 DJ |
758 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
759 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
760 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
761 | ||
762 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
763 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 764 | static int |
879bfdc2 | 765 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
766 | struct ui_file *tmp_error_stream, |
767 | int *disabled_breaks, int *process_warning, | |
768 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
769 | { |
770 | int val = 0; | |
771 | ||
772 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
773 | breakpoints should not be inserted. */ | |
468d015d | 774 | if (!breakpoint_enabled (bpt->owner)) |
879bfdc2 DJ |
775 | return 0; |
776 | ||
777 | if (bpt->inserted || bpt->duplicate) | |
778 | return 0; | |
779 | ||
780 | if (bpt->loc_type == bp_loc_software_breakpoint | |
781 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
782 | { | |
783 | /* First check to see if we have to handle an overlay. */ | |
784 | if (overlay_debugging == ovly_off | |
785 | || bpt->section == NULL | |
786 | || !(section_is_overlay (bpt->section))) | |
787 | { | |
788 | /* No overlay handling: just set the breakpoint. */ | |
789 | ||
790 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
791 | val = target_insert_hw_breakpoint (bpt->address, | |
792 | bpt->shadow_contents); | |
793 | else | |
794 | val = target_insert_breakpoint (bpt->address, | |
795 | bpt->shadow_contents); | |
796 | } | |
797 | else | |
798 | { | |
799 | /* This breakpoint is in an overlay section. | |
800 | Shall we set a breakpoint at the LMA? */ | |
801 | if (!overlay_events_enabled) | |
802 | { | |
803 | /* Yes -- overlay event support is not active, | |
804 | so we must try to set a breakpoint at the LMA. | |
805 | This will not work for a hardware breakpoint. */ | |
806 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
807 | warning ("hardware breakpoint %d not supported in overlay!\n", | |
808 | bpt->owner->number); | |
809 | else | |
810 | { | |
811 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
812 | bpt->section); | |
813 | /* Set a software (trap) breakpoint at the LMA. */ | |
814 | val = target_insert_breakpoint (addr, bpt->shadow_contents); | |
815 | if (val != 0) | |
816 | fprintf_unfiltered (tmp_error_stream, | |
817 | "Overlay breakpoint %d failed: in ROM?", | |
818 | bpt->owner->number); | |
819 | } | |
820 | } | |
821 | /* Shall we set a breakpoint at the VMA? */ | |
822 | if (section_is_mapped (bpt->section)) | |
823 | { | |
824 | /* Yes. This overlay section is mapped into memory. */ | |
825 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
826 | val = target_insert_hw_breakpoint (bpt->address, | |
827 | bpt->shadow_contents); | |
828 | else | |
829 | val = target_insert_breakpoint (bpt->address, | |
830 | bpt->shadow_contents); | |
831 | } | |
832 | else | |
833 | { | |
834 | /* No. This breakpoint will not be inserted. | |
835 | No error, but do not mark the bp as 'inserted'. */ | |
836 | return 0; | |
837 | } | |
838 | } | |
839 | ||
840 | if (val) | |
841 | { | |
842 | /* Can't set the breakpoint. */ | |
843 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
844 | if (DISABLE_UNSETTABLE_BREAK (bpt->address)) | |
845 | { | |
846 | /* See also: disable_breakpoints_in_shlibs. */ | |
847 | val = 0; | |
848 | bpt->owner->enable_state = bp_shlib_disabled; | |
849 | if (!*disabled_breaks) | |
850 | { | |
851 | fprintf_unfiltered (tmp_error_stream, | |
852 | "Cannot insert breakpoint %d.\n", | |
853 | bpt->owner->number); | |
854 | fprintf_unfiltered (tmp_error_stream, | |
855 | "Temporarily disabling shared library breakpoints:\n"); | |
856 | } | |
857 | *disabled_breaks = 1; | |
858 | fprintf_unfiltered (tmp_error_stream, | |
859 | "breakpoint #%d\n", bpt->owner->number); | |
860 | } | |
861 | else | |
862 | #endif | |
863 | { | |
864 | #ifdef ONE_PROCESS_WRITETEXT | |
865 | *process_warning = 1; | |
866 | #endif | |
867 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
868 | { | |
869 | *hw_breakpoint_error = 1; | |
870 | fprintf_unfiltered (tmp_error_stream, | |
871 | "Cannot insert hardware breakpoint %d.\n", | |
872 | bpt->owner->number); | |
873 | } | |
874 | else | |
875 | { | |
876 | fprintf_unfiltered (tmp_error_stream, | |
877 | "Cannot insert breakpoint %d.\n", | |
878 | bpt->owner->number); | |
879 | fprintf_filtered (tmp_error_stream, | |
880 | "Error accessing memory address "); | |
881 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
882 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
883 | safe_strerror (val)); | |
884 | } | |
885 | ||
886 | } | |
887 | } | |
888 | else | |
889 | bpt->inserted = 1; | |
890 | ||
891 | return val; | |
892 | } | |
893 | ||
894 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
895 | /* NOTE drow/2003-09-08: This state only exists for removing | |
896 | watchpoints. It's not clear that it's necessary... */ | |
897 | && bpt->owner->disposition != disp_del_at_next_stop) | |
898 | { | |
899 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
900 | based on the expression. Ideally this should happen at a higher level, | |
901 | and there should be one bp_location for each computed address we | |
902 | must watch. As soon as a many-to-one mapping is available I'll | |
903 | convert this. */ | |
904 | ||
7789d0fa | 905 | int within_current_scope; |
879bfdc2 DJ |
906 | struct value *mark = value_mark (); |
907 | struct value *v; | |
7789d0fa | 908 | struct frame_id saved_frame_id; |
879bfdc2 | 909 | |
7789d0fa | 910 | /* Save the current frame's ID so we can restore it after |
879bfdc2 DJ |
911 | evaluating the watchpoint expression on its own frame. */ |
912 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
913 | took a frame parameter, so that we didn't have to change the | |
914 | selected frame. */ | |
7789d0fa | 915 | saved_frame_id = get_frame_id (deprecated_selected_frame); |
879bfdc2 DJ |
916 | |
917 | /* Determine if the watchpoint is within scope. */ | |
918 | if (bpt->owner->exp_valid_block == NULL) | |
919 | within_current_scope = 1; | |
920 | else | |
921 | { | |
922 | struct frame_info *fi; | |
923 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
924 | within_current_scope = (fi != NULL); | |
925 | if (within_current_scope) | |
926 | select_frame (fi); | |
927 | } | |
928 | ||
929 | if (within_current_scope) | |
930 | { | |
7270d8f2 OF |
931 | free_valchain (bpt); |
932 | ||
879bfdc2 DJ |
933 | /* Evaluate the expression and cut the chain of values |
934 | produced off from the value chain. | |
935 | ||
936 | Make sure the value returned isn't lazy; we use | |
937 | laziness to determine what memory GDB actually needed | |
938 | in order to compute the value of the expression. */ | |
939 | v = evaluate_expression (bpt->owner->exp); | |
940 | VALUE_CONTENTS (v); | |
941 | value_release_to_mark (mark); | |
942 | ||
943 | bpt->owner->val_chain = v; | |
944 | bpt->inserted = 1; | |
945 | ||
946 | /* Look at each value on the value chain. */ | |
947 | for (; v; v = v->next) | |
948 | { | |
949 | /* If it's a memory location, and GDB actually needed | |
950 | its contents to evaluate the expression, then we | |
951 | must watch it. */ | |
952 | if (VALUE_LVAL (v) == lval_memory | |
953 | && ! VALUE_LAZY (v)) | |
954 | { | |
df407dfe | 955 | struct type *vtype = check_typedef (value_type (v)); |
879bfdc2 DJ |
956 | |
957 | /* We only watch structs and arrays if user asked | |
958 | for it explicitly, never if they just happen to | |
959 | appear in the middle of some value chain. */ | |
960 | if (v == bpt->owner->val_chain | |
961 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
962 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
963 | { | |
964 | CORE_ADDR addr; | |
965 | int len, type; | |
966 | ||
df407dfe AC |
967 | addr = VALUE_ADDRESS (v) + value_offset (v); |
968 | len = TYPE_LENGTH (value_type (v)); | |
879bfdc2 DJ |
969 | type = hw_write; |
970 | if (bpt->owner->type == bp_read_watchpoint) | |
971 | type = hw_read; | |
972 | else if (bpt->owner->type == bp_access_watchpoint) | |
973 | type = hw_access; | |
974 | ||
975 | val = target_insert_watchpoint (addr, len, type); | |
976 | if (val == -1) | |
977 | { | |
978 | /* Don't exit the loop, try to insert | |
979 | every value on the value chain. That's | |
980 | because we will be removing all the | |
981 | watches below, and removing a | |
982 | watchpoint we didn't insert could have | |
983 | adverse effects. */ | |
984 | bpt->inserted = 0; | |
985 | } | |
986 | val = 0; | |
987 | } | |
988 | } | |
989 | } | |
990 | /* Failure to insert a watchpoint on any memory value in the | |
991 | value chain brings us here. */ | |
992 | if (!bpt->inserted) | |
993 | { | |
0bde7532 | 994 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
995 | *hw_breakpoint_error = 1; |
996 | fprintf_unfiltered (tmp_error_stream, | |
997 | "Could not insert hardware watchpoint %d.\n", | |
998 | bpt->owner->number); | |
999 | val = -1; | |
1000 | } | |
1001 | } | |
1002 | else | |
1003 | { | |
1004 | printf_filtered ("Hardware watchpoint %d deleted ", bpt->owner->number); | |
1005 | printf_filtered ("because the program has left the block \n"); | |
1006 | printf_filtered ("in which its expression is valid.\n"); | |
1007 | if (bpt->owner->related_breakpoint) | |
1008 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
1009 | bpt->owner->disposition = disp_del_at_next_stop; | |
1010 | } | |
1011 | ||
7789d0fa AC |
1012 | /* Restore the selected frame. */ |
1013 | select_frame (frame_find_by_id (saved_frame_id)); | |
879bfdc2 DJ |
1014 | |
1015 | return val; | |
1016 | } | |
1017 | ||
1018 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
1019 | { | |
1020 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1021 | breakpoint. Once again, it would be better if this was represented | |
1022 | as two bp_locations. */ | |
1023 | ||
1024 | /* If we get here, we must have a callback mechanism for exception | |
1025 | events -- with g++ style embedded label support, we insert | |
1026 | ordinary breakpoints and not catchpoints. */ | |
1027 | val = target_insert_breakpoint (bpt->address, bpt->shadow_contents); | |
1028 | if (val) | |
1029 | { | |
1030 | /* Couldn't set breakpoint for some reason */ | |
1031 | fprintf_unfiltered (tmp_error_stream, | |
1032 | "Cannot insert catchpoint %d; disabling it.\n", | |
1033 | bpt->owner->number); | |
1034 | fprintf_filtered (tmp_error_stream, | |
1035 | "Error accessing memory address "); | |
1036 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
1037 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
1038 | safe_strerror (val)); | |
1039 | bpt->owner->enable_state = bp_disabled; | |
1040 | } | |
1041 | else | |
1042 | { | |
1043 | /* Bp set, now make sure callbacks are enabled */ | |
1044 | /* Format possible error msg */ | |
1045 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1046 | bpt->owner->number); | |
1047 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1048 | int val; | |
1049 | args_for_catchpoint_enable args; | |
1050 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1051 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1052 | args.enable_p = 1; | |
1053 | val = catch_errors (cover_target_enable_exception_callback, | |
1054 | &args, message, RETURN_MASK_ALL); | |
1055 | do_cleanups (cleanups); | |
1056 | if (val != 0 && val != -1) | |
1057 | bpt->inserted = 1; | |
1058 | ||
1059 | /* Check if something went wrong; val == 0 can be ignored */ | |
1060 | if (val == -1) | |
1061 | { | |
1062 | /* something went wrong */ | |
1063 | fprintf_unfiltered (tmp_error_stream, | |
1064 | "Cannot insert catchpoint %d; disabling it.\n", | |
1065 | bpt->owner->number); | |
1066 | bpt->owner->enable_state = bp_disabled; | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | return val; | |
1071 | } | |
1072 | ||
1073 | else if (bpt->owner->type == bp_catch_fork | |
1074 | || bpt->owner->type == bp_catch_vfork | |
1075 | || bpt->owner->type == bp_catch_exec) | |
1076 | { | |
1077 | char *prefix = xstrprintf ("warning: inserting catchpoint %d: ", | |
1078 | bpt->owner->number); | |
1079 | struct cleanup *cleanups = make_cleanup (xfree, prefix); | |
1080 | val = catch_exceptions (uiout, insert_catchpoint, bpt->owner, prefix, | |
1081 | RETURN_MASK_ERROR); | |
1082 | do_cleanups (cleanups); | |
1083 | if (val < 0) | |
1084 | bpt->owner->enable_state = bp_disabled; | |
1085 | else | |
1086 | bpt->inserted = 1; | |
1640b821 DJ |
1087 | |
1088 | /* We've already printed an error message if there was a problem | |
1089 | inserting this catchpoint, and we've disabled the catchpoint, | |
1090 | so just return success. */ | |
1091 | return 0; | |
879bfdc2 DJ |
1092 | } |
1093 | ||
1094 | return 0; | |
1095 | } | |
1096 | ||
c906108c SS |
1097 | /* insert_breakpoints is used when starting or continuing the program. |
1098 | remove_breakpoints is used when the program stops. | |
1099 | Both return zero if successful, | |
1100 | or an `errno' value if could not write the inferior. */ | |
1101 | ||
1102 | int | |
fba45db2 | 1103 | insert_breakpoints (void) |
c906108c | 1104 | { |
879bfdc2 | 1105 | struct bp_location *b, *temp; |
53a5351d | 1106 | int return_val = 0; /* return success code. */ |
c906108c SS |
1107 | int val = 0; |
1108 | int disabled_breaks = 0; | |
81d0cc19 GS |
1109 | int hw_breakpoint_error = 0; |
1110 | int process_warning = 0; | |
c906108c | 1111 | |
81d0cc19 GS |
1112 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1113 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1114 | ||
1115 | /* Explicitly mark the warning -- this will only be printed if | |
1116 | there was an error. */ | |
1117 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1118 | |
879bfdc2 DJ |
1119 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1120 | { | |
1121 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1122 | breakpoints should not be inserted. */ | |
468d015d | 1123 | if (!breakpoint_enabled (b->owner)) |
879bfdc2 DJ |
1124 | continue; |
1125 | ||
1126 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when | |
1127 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1128 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1129 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1130 | { | |
1131 | struct value *val; | |
1132 | val = evaluate_expression (b->owner->exp); | |
1133 | release_value (val); | |
1134 | if (VALUE_LAZY (val)) | |
1135 | value_fetch_lazy (val); | |
1136 | b->owner->val = val; | |
1137 | } | |
a881cf8e | 1138 | |
879bfdc2 DJ |
1139 | val = insert_bp_location (b, tmp_error_stream, |
1140 | &disabled_breaks, &process_warning, | |
1141 | &hw_breakpoint_error); | |
1142 | if (val) | |
1143 | return_val = val; | |
1144 | } | |
c906108c | 1145 | |
879bfdc2 | 1146 | if (return_val) |
81d0cc19 GS |
1147 | { |
1148 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1149 | message about possibly exhausted resources. */ | |
879bfdc2 | 1150 | if (hw_breakpoint_error) |
81d0cc19 | 1151 | { |
c6510018 MS |
1152 | fprintf_unfiltered (tmp_error_stream, |
1153 | "Could not insert hardware breakpoints:\n\ | |
1154 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1155 | } |
c6510018 | 1156 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1157 | if (process_warning) |
c6510018 MS |
1158 | fprintf_unfiltered (tmp_error_stream, |
1159 | "The same program may be running in another process."); | |
1160 | #endif | |
81d0cc19 GS |
1161 | target_terminal_ours_for_output (); |
1162 | error_stream (tmp_error_stream); | |
1163 | } | |
53a5351d | 1164 | return return_val; |
c906108c SS |
1165 | } |
1166 | ||
c906108c | 1167 | int |
fba45db2 | 1168 | remove_breakpoints (void) |
c906108c | 1169 | { |
0bde7532 | 1170 | struct bp_location *b; |
c906108c SS |
1171 | int val; |
1172 | ||
0bde7532 | 1173 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1174 | { |
0bde7532 | 1175 | if (b->inserted) |
c5aa993b JM |
1176 | { |
1177 | val = remove_breakpoint (b, mark_uninserted); | |
1178 | if (val != 0) | |
1179 | return val; | |
1180 | } | |
1181 | } | |
c906108c SS |
1182 | return 0; |
1183 | } | |
1184 | ||
692590c1 | 1185 | int |
80ce1ecb | 1186 | remove_hw_watchpoints (void) |
692590c1 | 1187 | { |
0bde7532 | 1188 | struct bp_location *b; |
692590c1 MS |
1189 | int val; |
1190 | ||
0bde7532 | 1191 | ALL_BP_LOCATIONS (b) |
692590c1 | 1192 | { |
0bde7532 | 1193 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1194 | { |
1195 | val = remove_breakpoint (b, mark_uninserted); | |
1196 | if (val != 0) | |
1197 | return val; | |
1198 | } | |
1199 | } | |
1200 | return 0; | |
1201 | } | |
1202 | ||
c906108c | 1203 | int |
fba45db2 | 1204 | reattach_breakpoints (int pid) |
c906108c | 1205 | { |
0bde7532 | 1206 | struct bp_location *b; |
c906108c | 1207 | int val; |
ce696e05 | 1208 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1209 | |
ce696e05 KB |
1210 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1211 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1212 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1213 | { |
0bde7532 | 1214 | if (b->inserted) |
c5aa993b JM |
1215 | { |
1216 | remove_breakpoint (b, mark_inserted); | |
0bde7532 DJ |
1217 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1218 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
c5aa993b | 1219 | else |
0bde7532 DJ |
1220 | val = target_insert_breakpoint (b->address, b->shadow_contents); |
1221 | /* FIXME drow/2003-10-07: This doesn't handle any other kinds of | |
1222 | breakpoints. It's wrong for watchpoints, for example. */ | |
c5aa993b JM |
1223 | if (val != 0) |
1224 | { | |
ce696e05 | 1225 | do_cleanups (old_chain); |
c5aa993b JM |
1226 | return val; |
1227 | } | |
1228 | } | |
1229 | } | |
ce696e05 | 1230 | do_cleanups (old_chain); |
c906108c SS |
1231 | return 0; |
1232 | } | |
1233 | ||
1234 | void | |
fba45db2 | 1235 | update_breakpoints_after_exec (void) |
c906108c | 1236 | { |
c5aa993b JM |
1237 | struct breakpoint *b; |
1238 | struct breakpoint *temp; | |
c906108c SS |
1239 | |
1240 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1241 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1242 | shadow is NOT valid after an exec()! */ | |
1243 | mark_breakpoints_out (); | |
1244 | ||
1245 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1246 | { |
1247 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1248 | if (b->type == bp_shlib_event) | |
1249 | { | |
1250 | delete_breakpoint (b); | |
1251 | continue; | |
1252 | } | |
c906108c | 1253 | |
1900040c MS |
1254 | /* Thread event breakpoints must be set anew after an exec(), |
1255 | as must overlay event breakpoints. */ | |
1256 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1257 | { |
1258 | delete_breakpoint (b); | |
1259 | continue; | |
1260 | } | |
1261 | ||
c5aa993b JM |
1262 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1263 | if (b->type == bp_step_resume) | |
1264 | { | |
1265 | delete_breakpoint (b); | |
1266 | continue; | |
1267 | } | |
1268 | ||
1269 | /* Ditto the sigtramp handler breakpoints. */ | |
1270 | if (b->type == bp_through_sigtramp) | |
1271 | { | |
1272 | delete_breakpoint (b); | |
1273 | continue; | |
1274 | } | |
1275 | ||
1276 | /* Ditto the exception-handling catchpoints. */ | |
1277 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1278 | { | |
1279 | delete_breakpoint (b); | |
1280 | continue; | |
1281 | } | |
1282 | ||
1283 | /* Don't delete an exec catchpoint, because else the inferior | |
1284 | won't stop when it ought! | |
1285 | ||
1286 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1287 | on this target, we may not be able to stop when the vfork is |
1288 | seen, but only when the subsequent exec is seen. (And because | |
1289 | deleting fork catchpoints here but not vfork catchpoints will | |
1290 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1291 | |
1292 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1293 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1294 | automagically. Certainly on HP-UX that's true. |
1295 | ||
1296 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
41989fcd AC |
1297 | valid code address on some platforms (like the mn10300 |
1298 | simulators). We shouldn't assign any special interpretation to | |
1299 | a breakpoint with a zero address. And in fact, GDB doesn't --- | |
1300 | I can't see what that comment above is talking about. As far | |
1301 | as I can tell, setting the address of a | |
644a1fe1 JB |
1302 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero |
1303 | is meaningless, since those are implemented with HP-UX kernel | |
1304 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1305 | if ((b->type == bp_catch_exec) || |
1306 | (b->type == bp_catch_vfork) || | |
1307 | (b->type == bp_catch_fork)) | |
1308 | { | |
5cab636d | 1309 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b JM |
1310 | continue; |
1311 | } | |
1312 | ||
1313 | /* bp_finish is a special case. The only way we ought to be able | |
1314 | to see one of these when an exec() has happened, is if the user | |
1315 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1316 | carries them to the call-site of the current callee, by setting | |
1317 | a temporary bp there and resuming. But in this case, the finish | |
1318 | will carry them entirely through the vfork & exec. | |
1319 | ||
1320 | We don't want to allow a bp_finish to remain inserted now. But | |
1321 | we can't safely delete it, 'cause finish_command has a handle to | |
1322 | the bp on a bpstat, and will later want to delete it. There's a | |
1323 | chance (and I've seen it happen) that if we delete the bp_finish | |
1324 | here, that its storage will get reused by the time finish_command | |
1325 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1326 | We really must allow finish_command to delete a bp_finish. | |
1327 | ||
53a5351d JM |
1328 | In the absense of a general solution for the "how do we know |
1329 | it's safe to delete something others may have handles to?" | |
1330 | problem, what we'll do here is just uninsert the bp_finish, and | |
1331 | let finish_command delete it. | |
1332 | ||
1333 | (We know the bp_finish is "doomed" in the sense that it's | |
1334 | momentary, and will be deleted as soon as finish_command sees | |
1335 | the inferior stopped. So it doesn't matter that the bp's | |
1336 | address is probably bogus in the new a.out, unlike e.g., the | |
1337 | solib breakpoints.) */ | |
c5aa993b | 1338 | |
c5aa993b JM |
1339 | if (b->type == bp_finish) |
1340 | { | |
1341 | continue; | |
1342 | } | |
1343 | ||
1344 | /* Without a symbolic address, we have little hope of the | |
1345 | pre-exec() address meaning the same thing in the post-exec() | |
1346 | a.out. */ | |
1347 | if (b->addr_string == NULL) | |
1348 | { | |
1349 | delete_breakpoint (b); | |
1350 | continue; | |
1351 | } | |
1352 | ||
1353 | /* If this breakpoint has survived the above battery of checks, then | |
1354 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1355 | to a target address, rather than reusing the old evaluation. |
1356 | ||
1357 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1358 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1359 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1360 | the breakpoint's address from scratch, or deletes it if it can't. | |
1361 | So I think this assignment could be deleted without effect. */ | |
5cab636d | 1362 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b | 1363 | } |
1900040c MS |
1364 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1365 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1366 | } |
1367 | ||
1368 | int | |
fba45db2 | 1369 | detach_breakpoints (int pid) |
c906108c | 1370 | { |
0bde7532 | 1371 | struct bp_location *b; |
c906108c | 1372 | int val; |
ce696e05 | 1373 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1374 | |
39f77062 KB |
1375 | if (pid == PIDGET (inferior_ptid)) |
1376 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1377 | |
ce696e05 KB |
1378 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1379 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1380 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1381 | { |
0bde7532 | 1382 | if (b->inserted) |
c5aa993b JM |
1383 | { |
1384 | val = remove_breakpoint (b, mark_inserted); | |
1385 | if (val != 0) | |
1386 | { | |
ce696e05 | 1387 | do_cleanups (old_chain); |
c5aa993b JM |
1388 | return val; |
1389 | } | |
1390 | } | |
1391 | } | |
ce696e05 | 1392 | do_cleanups (old_chain); |
c906108c SS |
1393 | return 0; |
1394 | } | |
1395 | ||
1396 | static int | |
0bde7532 | 1397 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1398 | { |
1399 | int val; | |
c5aa993b | 1400 | |
0bde7532 | 1401 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1402 | /* Permanent breakpoints cannot be inserted or removed. */ |
1403 | return 0; | |
1404 | ||
0bde7532 | 1405 | if (b->owner->type == bp_none) |
53a5351d | 1406 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
0bde7532 DJ |
1407 | b->owner->number); |
1408 | ||
1409 | if (b->loc_type == bp_loc_software_breakpoint | |
1410 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1411 | { |
c02f5703 MS |
1412 | /* "Normal" instruction breakpoint: either the standard |
1413 | trap-instruction bp (bp_breakpoint), or a | |
1414 | bp_hardware_breakpoint. */ | |
1415 | ||
1416 | /* First check to see if we have to handle an overlay. */ | |
1417 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1418 | || b->section == NULL |
1419 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1420 | { |
1421 | /* No overlay handling: just remove the breakpoint. */ | |
1422 | ||
0bde7532 DJ |
1423 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1424 | val = target_remove_hw_breakpoint (b->address, | |
1425 | b->shadow_contents); | |
c02f5703 | 1426 | else |
0bde7532 | 1427 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c02f5703 | 1428 | } |
c906108c SS |
1429 | else |
1430 | { | |
c02f5703 MS |
1431 | /* This breakpoint is in an overlay section. |
1432 | Did we set a breakpoint at the LMA? */ | |
1433 | if (!overlay_events_enabled) | |
1434 | { | |
1435 | /* Yes -- overlay event support is not active, so we | |
1436 | should have set a breakpoint at the LMA. Remove it. | |
1437 | */ | |
0bde7532 DJ |
1438 | CORE_ADDR addr = overlay_unmapped_address (b->address, |
1439 | b->section); | |
c02f5703 MS |
1440 | /* Ignore any failures: if the LMA is in ROM, we will |
1441 | have already warned when we failed to insert it. */ | |
0bde7532 DJ |
1442 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1443 | target_remove_hw_breakpoint (addr, b->shadow_contents); | |
c02f5703 | 1444 | else |
0bde7532 | 1445 | target_remove_breakpoint (addr, b->shadow_contents); |
c02f5703 MS |
1446 | } |
1447 | /* Did we set a breakpoint at the VMA? | |
1448 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1449 | if (b->inserted) |
c906108c | 1450 | { |
c02f5703 MS |
1451 | /* Yes -- remove it. Previously we did not bother to |
1452 | remove the breakpoint if the section had been | |
1453 | unmapped, but let's not rely on that being safe. We | |
1454 | don't know what the overlay manager might do. */ | |
0bde7532 DJ |
1455 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1456 | val = target_remove_hw_breakpoint (b->address, | |
1457 | b->shadow_contents); | |
c02f5703 | 1458 | else |
0bde7532 DJ |
1459 | val = target_remove_breakpoint (b->address, |
1460 | b->shadow_contents); | |
c906108c | 1461 | } |
c02f5703 MS |
1462 | else |
1463 | { | |
1464 | /* No -- not inserted, so no need to remove. No error. */ | |
1465 | val = 0; | |
1466 | } | |
c906108c SS |
1467 | } |
1468 | if (val) | |
1469 | return val; | |
0bde7532 | 1470 | b->inserted = (is == mark_inserted); |
c906108c | 1471 | } |
0bde7532 | 1472 | else if (b->loc_type == bp_loc_hardware_watchpoint |
468d015d | 1473 | && breakpoint_enabled (b->owner) |
0bde7532 | 1474 | && !b->duplicate) |
c906108c | 1475 | { |
278cd55f AC |
1476 | struct value *v; |
1477 | struct value *n; | |
c5aa993b | 1478 | |
0bde7532 | 1479 | b->inserted = (is == mark_inserted); |
c906108c | 1480 | /* Walk down the saved value chain. */ |
0bde7532 | 1481 | for (v = b->owner->val_chain; v; v = v->next) |
c906108c SS |
1482 | { |
1483 | /* For each memory reference remove the watchpoint | |
1484 | at that address. */ | |
5c44784c JM |
1485 | if (VALUE_LVAL (v) == lval_memory |
1486 | && ! VALUE_LAZY (v)) | |
c906108c | 1487 | { |
df407dfe | 1488 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 | 1489 | |
0bde7532 | 1490 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1491 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1492 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1493 | { | |
1494 | CORE_ADDR addr; | |
1495 | int len, type; | |
1496 | ||
df407dfe AC |
1497 | addr = VALUE_ADDRESS (v) + value_offset (v); |
1498 | len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 1499 | type = hw_write; |
0bde7532 | 1500 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1501 | type = hw_read; |
0bde7532 | 1502 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1503 | type = hw_access; |
1504 | ||
1505 | val = target_remove_watchpoint (addr, len, type); | |
1506 | if (val == -1) | |
0bde7532 | 1507 | b->inserted = 1; |
2e70b7b9 MS |
1508 | val = 0; |
1509 | } | |
c906108c SS |
1510 | } |
1511 | } | |
1512 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1513 | if ((is == mark_uninserted) && (b->inserted)) |
53a5351d | 1514 | warning ("Could not remove hardware watchpoint %d.", |
0bde7532 | 1515 | b->owner->number); |
c906108c | 1516 | } |
0bde7532 DJ |
1517 | else if ((b->owner->type == bp_catch_fork || |
1518 | b->owner->type == bp_catch_vfork || | |
1519 | b->owner->type == bp_catch_exec) | |
468d015d | 1520 | && breakpoint_enabled (b->owner) |
0bde7532 | 1521 | && !b->duplicate) |
c906108c SS |
1522 | { |
1523 | val = -1; | |
0bde7532 | 1524 | switch (b->owner->type) |
c5aa993b JM |
1525 | { |
1526 | case bp_catch_fork: | |
39f77062 | 1527 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1528 | break; |
1529 | case bp_catch_vfork: | |
39f77062 | 1530 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1531 | break; |
1532 | case bp_catch_exec: | |
39f77062 | 1533 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1534 | break; |
ac9a91a7 | 1535 | default: |
53a5351d | 1536 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1537 | break; |
c5aa993b | 1538 | } |
c906108c SS |
1539 | if (val) |
1540 | return val; | |
0bde7532 | 1541 | b->inserted = (is == mark_inserted); |
c906108c | 1542 | } |
0bde7532 DJ |
1543 | else if ((b->owner->type == bp_catch_catch || |
1544 | b->owner->type == bp_catch_throw) | |
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 | 1551 | return val; |
0bde7532 | 1552 | b->inserted = (is == mark_inserted); |
c906108c | 1553 | } |
0bde7532 DJ |
1554 | else if (ep_is_exception_catchpoint (b->owner) |
1555 | && b->inserted /* sometimes previous insert doesn't happen */ | |
468d015d | 1556 | && breakpoint_enabled (b->owner) |
0bde7532 | 1557 | && !b->duplicate) |
c906108c SS |
1558 | { |
1559 | ||
0bde7532 | 1560 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1561 | if (val) |
c5aa993b JM |
1562 | return val; |
1563 | ||
0bde7532 | 1564 | b->inserted = (is == mark_inserted); |
c906108c SS |
1565 | } |
1566 | ||
1567 | return 0; | |
1568 | } | |
1569 | ||
1570 | /* Clear the "inserted" flag in all breakpoints. */ | |
1571 | ||
1572 | void | |
fba45db2 | 1573 | mark_breakpoints_out (void) |
c906108c | 1574 | { |
075f6582 | 1575 | struct bp_location *bpt; |
c906108c | 1576 | |
075f6582 DJ |
1577 | ALL_BP_LOCATIONS (bpt) |
1578 | bpt->inserted = 0; | |
c906108c SS |
1579 | } |
1580 | ||
53a5351d JM |
1581 | /* Clear the "inserted" flag in all breakpoints and delete any |
1582 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1583 | |
1584 | Plus other such housekeeping that has to be done for breakpoints | |
1585 | between runs. | |
1586 | ||
53a5351d JM |
1587 | Note: this function gets called at the end of a run (by |
1588 | generic_mourn_inferior) and when a run begins (by | |
1589 | init_wait_for_inferior). */ | |
c906108c SS |
1590 | |
1591 | ||
1592 | ||
1593 | void | |
fba45db2 | 1594 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1595 | { |
52f0bd74 | 1596 | struct breakpoint *b, *temp; |
075f6582 | 1597 | struct bp_location *bpt; |
c906108c SS |
1598 | static int warning_needed = 0; |
1599 | ||
075f6582 DJ |
1600 | ALL_BP_LOCATIONS (bpt) |
1601 | bpt->inserted = 0; | |
1602 | ||
c906108c | 1603 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1604 | { |
c5aa993b JM |
1605 | switch (b->type) |
1606 | { | |
1607 | case bp_call_dummy: | |
1608 | case bp_watchpoint_scope: | |
c906108c | 1609 | |
c5aa993b JM |
1610 | /* If the call dummy breakpoint is at the entry point it will |
1611 | cause problems when the inferior is rerun, so we better | |
1612 | get rid of it. | |
c906108c | 1613 | |
c5aa993b JM |
1614 | Also get rid of scope breakpoints. */ |
1615 | delete_breakpoint (b); | |
1616 | break; | |
c906108c | 1617 | |
c5aa993b JM |
1618 | case bp_watchpoint: |
1619 | case bp_hardware_watchpoint: | |
1620 | case bp_read_watchpoint: | |
1621 | case bp_access_watchpoint: | |
c906108c | 1622 | |
c5aa993b JM |
1623 | /* Likewise for watchpoints on local expressions. */ |
1624 | if (b->exp_valid_block != NULL) | |
1625 | delete_breakpoint (b); | |
c860120c PM |
1626 | if (context == inf_starting) |
1627 | { | |
1628 | /* Reset val field to force reread of starting value | |
1629 | in insert_breakpoints. */ | |
1630 | if (b->val) | |
1631 | value_free (b->val); | |
1632 | b->val = NULL; | |
1633 | } | |
c5aa993b JM |
1634 | break; |
1635 | default: | |
1636 | /* Likewise for exception catchpoints in dynamic-linked | |
1637 | executables where required */ | |
f83f82bc AC |
1638 | if (ep_is_exception_catchpoint (b) |
1639 | && deprecated_exception_catchpoints_are_fragile) | |
c5aa993b JM |
1640 | { |
1641 | warning_needed = 1; | |
c906108c | 1642 | delete_breakpoint (b); |
c5aa993b JM |
1643 | } |
1644 | break; | |
1645 | } | |
1646 | } | |
c906108c | 1647 | |
f83f82bc AC |
1648 | if (deprecated_exception_catchpoints_are_fragile) |
1649 | deprecated_exception_support_initialized = 0; | |
c906108c | 1650 | |
c5aa993b | 1651 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1652 | if (warning_needed && (context != inf_exited)) |
1653 | { | |
53a5351d JM |
1654 | warning ("Exception catchpoints from last run were deleted."); |
1655 | warning ("You must reinsert them explicitly."); | |
c906108c | 1656 | warning_needed = 0; |
c5aa993b | 1657 | } |
c906108c SS |
1658 | } |
1659 | ||
c2c6d25f JM |
1660 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1661 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1662 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1663 | permanent breakpoint. | |
1664 | - When continuing from a location with an ordinary breakpoint, we | |
1665 | actually single step once before calling insert_breakpoints. | |
1666 | - When continuing from a localion with a permanent breakpoint, we | |
1667 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1668 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1669 | |
c2c6d25f | 1670 | enum breakpoint_here |
fba45db2 | 1671 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1672 | { |
075f6582 | 1673 | struct bp_location *bpt; |
c2c6d25f | 1674 | int any_breakpoint_here = 0; |
c906108c | 1675 | |
075f6582 DJ |
1676 | ALL_BP_LOCATIONS (bpt) |
1677 | { | |
1678 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1679 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1680 | continue; | |
1681 | ||
468d015d | 1682 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1683 | || bpt->owner->enable_state == bp_permanent) |
1684 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1685 | { | |
1686 | if (overlay_debugging | |
1687 | && section_is_overlay (bpt->section) | |
1688 | && !section_is_mapped (bpt->section)) | |
1689 | continue; /* unmapped overlay -- can't be a match */ | |
1690 | else if (bpt->owner->enable_state == bp_permanent) | |
1691 | return permanent_breakpoint_here; | |
1692 | else | |
1693 | any_breakpoint_here = 1; | |
1694 | } | |
1695 | } | |
c906108c | 1696 | |
c2c6d25f | 1697 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1698 | } |
1699 | ||
c2c6d25f | 1700 | |
53a5351d JM |
1701 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1702 | but it only returns true if there is actually a breakpoint inserted | |
1703 | at PC. */ | |
c906108c SS |
1704 | |
1705 | int | |
fba45db2 | 1706 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1707 | { |
075f6582 | 1708 | struct bp_location *bpt; |
c906108c | 1709 | |
075f6582 | 1710 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1711 | { |
075f6582 DJ |
1712 | if (bpt->loc_type != bp_loc_software_breakpoint |
1713 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1714 | continue; | |
1715 | ||
1716 | if (bpt->inserted | |
1717 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1718 | { | |
1719 | if (overlay_debugging | |
1720 | && section_is_overlay (bpt->section) | |
1721 | && !section_is_mapped (bpt->section)) | |
1722 | continue; /* unmapped overlay -- can't be a match */ | |
1723 | else | |
1724 | return 1; | |
1725 | } | |
c5aa993b | 1726 | } |
c906108c SS |
1727 | |
1728 | return 0; | |
1729 | } | |
1730 | ||
4fa8626c DJ |
1731 | /* This function returns non-zero iff there is a software breakpoint |
1732 | inserted at PC. */ | |
1733 | ||
1734 | int | |
1735 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1736 | { | |
1737 | struct bp_location *bpt; | |
1738 | int any_breakpoint_here = 0; | |
1739 | ||
1740 | ALL_BP_LOCATIONS (bpt) | |
1741 | { | |
1742 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1743 | continue; | |
1744 | ||
1745 | if ((breakpoint_enabled (bpt->owner) | |
1746 | || bpt->owner->enable_state == bp_permanent) | |
1747 | && bpt->inserted | |
1748 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1749 | { | |
1750 | if (overlay_debugging | |
1751 | && section_is_overlay (bpt->section) | |
1752 | && !section_is_mapped (bpt->section)) | |
1753 | continue; /* unmapped overlay -- can't be a match */ | |
1754 | else | |
1755 | return 1; | |
1756 | } | |
1757 | } | |
1758 | ||
1759 | return 0; | |
1760 | } | |
1761 | ||
075f6582 DJ |
1762 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1763 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1764 | |
1765 | int | |
39f77062 | 1766 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1767 | { |
075f6582 | 1768 | struct bp_location *bpt; |
c906108c SS |
1769 | int thread; |
1770 | ||
39f77062 | 1771 | thread = pid_to_thread_id (ptid); |
c906108c | 1772 | |
075f6582 | 1773 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1774 | { |
075f6582 DJ |
1775 | if (bpt->loc_type != bp_loc_software_breakpoint |
1776 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1777 | continue; | |
1778 | ||
468d015d | 1779 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1780 | || bpt->owner->enable_state == bp_permanent) |
1781 | && bpt->address == pc | |
1782 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1783 | { | |
1784 | if (overlay_debugging | |
1785 | && section_is_overlay (bpt->section) | |
1786 | && !section_is_mapped (bpt->section)) | |
1787 | continue; /* unmapped overlay -- can't be a match */ | |
1788 | else | |
1789 | return 1; | |
1790 | } | |
c5aa993b | 1791 | } |
c906108c SS |
1792 | |
1793 | return 0; | |
1794 | } | |
c906108c | 1795 | \f |
c5aa993b | 1796 | |
c906108c SS |
1797 | /* bpstat stuff. External routines' interfaces are documented |
1798 | in breakpoint.h. */ | |
1799 | ||
1800 | int | |
fba45db2 | 1801 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1802 | { |
1803 | return | |
1804 | (ep->type == bp_catch_load) | |
1805 | || (ep->type == bp_catch_unload) | |
1806 | || (ep->type == bp_catch_fork) | |
1807 | || (ep->type == bp_catch_vfork) | |
1808 | || (ep->type == bp_catch_exec) | |
1809 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1810 | || (ep->type == bp_catch_throw); |
c906108c | 1811 | |
c5aa993b | 1812 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1813 | } |
c5aa993b | 1814 | |
c906108c | 1815 | int |
fba45db2 | 1816 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1817 | { |
1818 | return | |
1819 | (ep->type == bp_catch_load) | |
d85310f7 | 1820 | || (ep->type == bp_catch_unload); |
c906108c SS |
1821 | } |
1822 | ||
1823 | int | |
fba45db2 | 1824 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1825 | { |
1826 | return | |
1827 | (ep->type == bp_catch_catch) | |
d85310f7 | 1828 | || (ep->type == bp_catch_throw); |
c906108c SS |
1829 | } |
1830 | ||
1831 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1832 | Also free any storage that is part of a bpstat. */ | |
1833 | ||
1834 | void | |
fba45db2 | 1835 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1836 | { |
1837 | bpstat p; | |
1838 | bpstat q; | |
1839 | ||
1840 | if (bsp == 0) | |
1841 | return; | |
1842 | p = *bsp; | |
1843 | while (p != NULL) | |
1844 | { | |
1845 | q = p->next; | |
1846 | if (p->old_val != NULL) | |
1847 | value_free (p->old_val); | |
c2b8ed2c | 1848 | free_command_lines (&p->commands); |
b8c9b27d | 1849 | xfree (p); |
c906108c SS |
1850 | p = q; |
1851 | } | |
1852 | *bsp = NULL; | |
1853 | } | |
1854 | ||
1855 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1856 | is part of the bpstat is copied as well. */ | |
1857 | ||
1858 | bpstat | |
fba45db2 | 1859 | bpstat_copy (bpstat bs) |
c906108c SS |
1860 | { |
1861 | bpstat p = NULL; | |
1862 | bpstat tmp; | |
1863 | bpstat retval = NULL; | |
1864 | ||
1865 | if (bs == NULL) | |
1866 | return bs; | |
1867 | ||
1868 | for (; bs != NULL; bs = bs->next) | |
1869 | { | |
1870 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1871 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1872 | if (bs->commands != NULL) |
1873 | tmp->commands = copy_command_lines (bs->commands); | |
1874 | if (bs->old_val != NULL) | |
1875 | tmp->old_val = value_copy (bs->old_val); | |
1876 | ||
c906108c SS |
1877 | if (p == NULL) |
1878 | /* This is the first thing in the chain. */ | |
1879 | retval = tmp; | |
1880 | else | |
1881 | p->next = tmp; | |
1882 | p = tmp; | |
1883 | } | |
1884 | p->next = NULL; | |
1885 | return retval; | |
1886 | } | |
1887 | ||
1888 | /* Find the bpstat associated with this breakpoint */ | |
1889 | ||
1890 | bpstat | |
fba45db2 | 1891 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1892 | { |
c5aa993b JM |
1893 | if (bsp == NULL) |
1894 | return NULL; | |
c906108c | 1895 | |
c5aa993b JM |
1896 | for (; bsp != NULL; bsp = bsp->next) |
1897 | { | |
1898 | if (bsp->breakpoint_at == breakpoint) | |
1899 | return bsp; | |
1900 | } | |
c906108c SS |
1901 | return NULL; |
1902 | } | |
1903 | ||
1904 | /* Find a step_resume breakpoint associated with this bpstat. | |
1905 | (If there are multiple step_resume bp's on the list, this function | |
1906 | will arbitrarily pick one.) | |
1907 | ||
1908 | It is an error to use this function if BPSTAT doesn't contain a | |
1909 | step_resume breakpoint. | |
1910 | ||
1911 | See wait_for_inferior's use of this function. */ | |
1912 | struct breakpoint * | |
fba45db2 | 1913 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1914 | { |
8601f500 MS |
1915 | int current_thread; |
1916 | ||
c906108c SS |
1917 | if (bsp == NULL) |
1918 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1919 | ||
8601f500 MS |
1920 | current_thread = pid_to_thread_id (inferior_ptid); |
1921 | ||
c906108c SS |
1922 | for (; bsp != NULL; bsp = bsp->next) |
1923 | { | |
1924 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1925 | (bsp->breakpoint_at->type == bp_step_resume) && |
1926 | (bsp->breakpoint_at->thread == current_thread || | |
1927 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1928 | return bsp->breakpoint_at; |
c906108c SS |
1929 | } |
1930 | ||
1931 | error ("Internal error (no step_resume breakpoint found)"); | |
1932 | } | |
1933 | ||
1934 | ||
1935 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1936 | at. *BSP upon return is a bpstat which points to the remaining | |
1937 | breakpoints stopped at (but which is not guaranteed to be good for | |
1938 | anything but further calls to bpstat_num). | |
1939 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1940 | ||
1941 | int | |
fba45db2 | 1942 | bpstat_num (bpstat *bsp) |
c906108c SS |
1943 | { |
1944 | struct breakpoint *b; | |
1945 | ||
1946 | if ((*bsp) == NULL) | |
1947 | return 0; /* No more breakpoint values */ | |
1948 | else | |
1949 | { | |
1950 | b = (*bsp)->breakpoint_at; | |
1951 | *bsp = (*bsp)->next; | |
1952 | if (b == NULL) | |
1953 | return -1; /* breakpoint that's been deleted since */ | |
1954 | else | |
c5aa993b | 1955 | return b->number; /* We have its number */ |
c906108c SS |
1956 | } |
1957 | } | |
1958 | ||
1959 | /* Modify BS so that the actions will not be performed. */ | |
1960 | ||
1961 | void | |
fba45db2 | 1962 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1963 | { |
1964 | for (; bs != NULL; bs = bs->next) | |
1965 | { | |
c2b8ed2c | 1966 | free_command_lines (&bs->commands); |
c906108c SS |
1967 | if (bs->old_val != NULL) |
1968 | { | |
1969 | value_free (bs->old_val); | |
1970 | bs->old_val = NULL; | |
1971 | } | |
1972 | } | |
1973 | } | |
1974 | ||
1975 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 1976 | static void |
4efb68b1 | 1977 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
1978 | { |
1979 | executing_breakpoint_commands = 0; | |
1980 | } | |
1981 | ||
1982 | /* Execute all the commands associated with all the breakpoints at this | |
1983 | location. Any of these commands could cause the process to proceed | |
1984 | beyond this point, etc. We look out for such changes by checking | |
1985 | the global "breakpoint_proceeded" after each command. */ | |
1986 | ||
1987 | void | |
fba45db2 | 1988 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1989 | { |
1990 | bpstat bs; | |
1991 | struct cleanup *old_chain; | |
c906108c SS |
1992 | |
1993 | /* Avoid endless recursion if a `source' command is contained | |
1994 | in bs->commands. */ | |
1995 | if (executing_breakpoint_commands) | |
1996 | return; | |
1997 | ||
1998 | executing_breakpoint_commands = 1; | |
1999 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2000 | ||
2001 | top: | |
2002 | /* Note that (as of this writing), our callers all appear to | |
2003 | be passing us the address of global stop_bpstat. And, if | |
2004 | our calls to execute_control_command cause the inferior to | |
2005 | proceed, that global (and hence, *bsp) will change. | |
2006 | ||
2007 | We must be careful to not touch *bsp unless the inferior | |
2008 | has not proceeded. */ | |
2009 | ||
2010 | /* This pointer will iterate over the list of bpstat's. */ | |
2011 | bs = *bsp; | |
2012 | ||
2013 | breakpoint_proceeded = 0; | |
2014 | for (; bs != NULL; bs = bs->next) | |
2015 | { | |
6c50ab1c JB |
2016 | struct command_line *cmd; |
2017 | struct cleanup *this_cmd_tree_chain; | |
2018 | ||
2019 | /* Take ownership of the BSP's command tree, if it has one. | |
2020 | ||
2021 | The command tree could legitimately contain commands like | |
2022 | 'step' and 'next', which call clear_proceed_status, which | |
2023 | frees stop_bpstat's command tree. To make sure this doesn't | |
2024 | free the tree we're executing out from under us, we need to | |
2025 | take ownership of the tree ourselves. Since a given bpstat's | |
2026 | commands are only executed once, we don't need to copy it; we | |
2027 | can clear the pointer in the bpstat, and make sure we free | |
2028 | the tree when we're done. */ | |
c906108c | 2029 | cmd = bs->commands; |
6c50ab1c JB |
2030 | bs->commands = 0; |
2031 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2032 | ||
c906108c SS |
2033 | while (cmd != NULL) |
2034 | { | |
2035 | execute_control_command (cmd); | |
2036 | ||
2037 | if (breakpoint_proceeded) | |
2038 | break; | |
2039 | else | |
2040 | cmd = cmd->next; | |
2041 | } | |
6c50ab1c JB |
2042 | |
2043 | /* We can free this command tree now. */ | |
2044 | do_cleanups (this_cmd_tree_chain); | |
2045 | ||
c906108c SS |
2046 | if (breakpoint_proceeded) |
2047 | /* The inferior is proceeded by the command; bomb out now. | |
2048 | The bpstat chain has been blown away by wait_for_inferior. | |
2049 | But since execution has stopped again, there is a new bpstat | |
2050 | to look at, so start over. */ | |
2051 | goto top; | |
c906108c | 2052 | } |
c2b8ed2c | 2053 | do_cleanups (old_chain); |
c906108c SS |
2054 | } |
2055 | ||
e514a9d6 | 2056 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2057 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2058 | by having it set different print_it values. |
2059 | ||
2060 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2061 | through the bpstat list of things causing this stop, calling the | |
2062 | print_bp_stop_message function on each one. The behavior of the | |
2063 | print_bp_stop_message function depends on the print_it field of | |
2064 | bpstat. If such field so indicates, call this function here. | |
2065 | ||
2066 | Return values from this routine (ultimately used by bpstat_print() | |
2067 | and normal_stop() to decide what to do): | |
2068 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2069 | don't print anything else. | |
2070 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2071 | that something to be followed by a location. | |
2072 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2073 | that something to be followed by a location. | |
2074 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2075 | analysis. */ | |
c906108c | 2076 | |
917317f4 | 2077 | static enum print_stop_action |
fba45db2 | 2078 | print_it_typical (bpstat bs) |
c906108c | 2079 | { |
3b31d625 | 2080 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2081 | struct ui_stream *stb; |
2082 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2083 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2084 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2085 | which has since been deleted. */ | |
e514a9d6 | 2086 | if (bs->breakpoint_at == NULL) |
917317f4 | 2087 | return PRINT_UNKNOWN; |
c906108c | 2088 | |
e514a9d6 | 2089 | switch (bs->breakpoint_at->type) |
c906108c | 2090 | { |
e514a9d6 JM |
2091 | case bp_breakpoint: |
2092 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2093 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2094 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2095 | bs->breakpoint_at->loc->address, | |
76897487 | 2096 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2097 | annotate_breakpoint (bs->breakpoint_at->number); |
2098 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2099 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2100 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2101 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2102 | ui_out_text (uiout, ", "); | |
2103 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2104 | break; |
2105 | ||
2106 | case bp_shlib_event: | |
917317f4 JM |
2107 | /* Did we stop because the user set the stop_on_solib_events |
2108 | variable? (If so, we report this as a generic, "Stopped due | |
2109 | to shlib event" message.) */ | |
e514a9d6 JM |
2110 | printf_filtered ("Stopped due to shared library event\n"); |
2111 | return PRINT_NOTHING; | |
2112 | break; | |
2113 | ||
c4093a6a JM |
2114 | case bp_thread_event: |
2115 | /* Not sure how we will get here. | |
2116 | GDB should not stop for these breakpoints. */ | |
2117 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2118 | return PRINT_NOTHING; | |
2119 | break; | |
2120 | ||
1900040c MS |
2121 | case bp_overlay_event: |
2122 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2123 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2124 | return PRINT_NOTHING; | |
2125 | break; | |
2126 | ||
e514a9d6 | 2127 | case bp_catch_load: |
c906108c SS |
2128 | annotate_catchpoint (bs->breakpoint_at->number); |
2129 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2130 | printf_filtered ("loaded"); |
2131 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2132 | return PRINT_SRC_AND_LOC; | |
2133 | break; | |
2134 | ||
2135 | case bp_catch_unload: | |
2136 | annotate_catchpoint (bs->breakpoint_at->number); | |
2137 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2138 | printf_filtered ("unloaded"); | |
2139 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2140 | return PRINT_SRC_AND_LOC; | |
2141 | break; | |
2142 | ||
2143 | case bp_catch_fork: | |
2144 | annotate_catchpoint (bs->breakpoint_at->number); | |
2145 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2146 | printf_filtered ("forked"); | |
53a5351d JM |
2147 | printf_filtered (" process %d), ", |
2148 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2149 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2150 | break; |
2151 | ||
2152 | case bp_catch_vfork: | |
2153 | annotate_catchpoint (bs->breakpoint_at->number); | |
2154 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2155 | printf_filtered ("vforked"); | |
2156 | printf_filtered (" process %d), ", | |
2157 | bs->breakpoint_at->forked_inferior_pid); | |
2158 | return PRINT_SRC_AND_LOC; | |
2159 | break; | |
2160 | ||
2161 | case bp_catch_exec: | |
c906108c SS |
2162 | annotate_catchpoint (bs->breakpoint_at->number); |
2163 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2164 | bs->breakpoint_at->number, |
2165 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2166 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2167 | break; |
2168 | ||
2169 | case bp_catch_catch: | |
53a5351d JM |
2170 | if (current_exception_event && |
2171 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2172 | { |
2173 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2174 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2175 | bs->breakpoint_at->number); | |
c5aa993b JM |
2176 | printf_filtered ("throw location "); |
2177 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2178 | printf_filtered ("%s:%d", | |
2179 | CURRENT_EXCEPTION_THROW_FILE, | |
2180 | CURRENT_EXCEPTION_THROW_LINE); | |
2181 | else | |
2182 | printf_filtered ("unknown"); | |
2183 | ||
2184 | printf_filtered (", catch location "); | |
2185 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2186 | printf_filtered ("%s:%d", | |
2187 | CURRENT_EXCEPTION_CATCH_FILE, | |
2188 | CURRENT_EXCEPTION_CATCH_LINE); | |
2189 | else | |
2190 | printf_filtered ("unknown"); | |
2191 | ||
2192 | printf_filtered ("\n"); | |
e514a9d6 JM |
2193 | /* don't bother to print location frame info */ |
2194 | return PRINT_SRC_ONLY; | |
c5aa993b | 2195 | } |
c906108c | 2196 | else |
c5aa993b | 2197 | { |
e514a9d6 JM |
2198 | /* really throw, some other bpstat will handle it */ |
2199 | return PRINT_UNKNOWN; | |
c5aa993b | 2200 | } |
e514a9d6 JM |
2201 | break; |
2202 | ||
2203 | case bp_catch_throw: | |
53a5351d JM |
2204 | if (current_exception_event && |
2205 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2206 | { |
2207 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2208 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2209 | bs->breakpoint_at->number); | |
c5aa993b JM |
2210 | printf_filtered ("throw location "); |
2211 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2212 | printf_filtered ("%s:%d", | |
2213 | CURRENT_EXCEPTION_THROW_FILE, | |
2214 | CURRENT_EXCEPTION_THROW_LINE); | |
2215 | else | |
2216 | printf_filtered ("unknown"); | |
2217 | ||
2218 | printf_filtered (", catch location "); | |
2219 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2220 | printf_filtered ("%s:%d", | |
2221 | CURRENT_EXCEPTION_CATCH_FILE, | |
2222 | CURRENT_EXCEPTION_CATCH_LINE); | |
2223 | else | |
2224 | printf_filtered ("unknown"); | |
2225 | ||
2226 | printf_filtered ("\n"); | |
e514a9d6 JM |
2227 | /* don't bother to print location frame info */ |
2228 | return PRINT_SRC_ONLY; | |
c5aa993b | 2229 | } |
c906108c | 2230 | else |
c5aa993b | 2231 | { |
e514a9d6 JM |
2232 | /* really catch, some other bpstat will handle it */ |
2233 | return PRINT_UNKNOWN; | |
c5aa993b | 2234 | } |
e514a9d6 | 2235 | break; |
c906108c | 2236 | |
e514a9d6 JM |
2237 | case bp_watchpoint: |
2238 | case bp_hardware_watchpoint: | |
2239 | if (bs->old_val != NULL) | |
2240 | { | |
2241 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2242 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2243 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2244 | mention (bs->breakpoint_at); |
3b31d625 | 2245 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2246 | ui_out_text (uiout, "\nOld value = "); |
2247 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2248 | ui_out_field_stream (uiout, "old", stb); | |
2249 | ui_out_text (uiout, "\nNew value = "); | |
2250 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2251 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2252 | do_cleanups (ui_out_chain); |
8b93c638 | 2253 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2254 | value_free (bs->old_val); |
2255 | bs->old_val = NULL; | |
2256 | } | |
2257 | /* More than one watchpoint may have been triggered. */ | |
2258 | return PRINT_UNKNOWN; | |
2259 | break; | |
2260 | ||
2261 | case bp_read_watchpoint: | |
9dc5e2a9 | 2262 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2263 | ui_out_field_string (uiout, "reason", "read-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, "\nValue = "); |
2267 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2268 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2269 | do_cleanups (ui_out_chain); |
8b93c638 | 2270 | ui_out_text (uiout, "\n"); |
917317f4 | 2271 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2272 | break; |
2273 | ||
2274 | case bp_access_watchpoint: | |
8b93c638 JM |
2275 | if (bs->old_val != NULL) |
2276 | { | |
2277 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2278 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2279 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2280 | mention (bs->breakpoint_at); |
3b31d625 | 2281 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2282 | ui_out_text (uiout, "\nOld value = "); |
2283 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2284 | ui_out_field_stream (uiout, "old", stb); | |
2285 | value_free (bs->old_val); | |
2286 | bs->old_val = NULL; | |
2287 | ui_out_text (uiout, "\nNew value = "); | |
2288 | } | |
2289 | else | |
2290 | { | |
2291 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2292 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2293 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
3b31d625 | 2294 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2295 | ui_out_text (uiout, "\nValue = "); |
2296 | } | |
2297 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2298 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2299 | do_cleanups (ui_out_chain); |
8b93c638 | 2300 | ui_out_text (uiout, "\n"); |
917317f4 | 2301 | return PRINT_UNKNOWN; |
e514a9d6 | 2302 | break; |
4ce44c66 | 2303 | |
e514a9d6 JM |
2304 | /* Fall through, we don't deal with these types of breakpoints |
2305 | here. */ | |
2306 | ||
11cf8741 | 2307 | case bp_finish: |
9dc5e2a9 | 2308 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2309 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2310 | return PRINT_UNKNOWN; |
2311 | break; | |
2312 | ||
e514a9d6 | 2313 | case bp_until: |
9dc5e2a9 | 2314 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2315 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2316 | return PRINT_UNKNOWN; |
2317 | break; | |
2318 | ||
c2d11a7d | 2319 | case bp_none: |
e514a9d6 JM |
2320 | case bp_longjmp: |
2321 | case bp_longjmp_resume: | |
2322 | case bp_step_resume: | |
2323 | case bp_through_sigtramp: | |
2324 | case bp_watchpoint_scope: | |
2325 | case bp_call_dummy: | |
2326 | default: | |
2327 | return PRINT_UNKNOWN; | |
2328 | } | |
2329 | } | |
2330 | ||
2331 | /* Generic routine for printing messages indicating why we | |
2332 | stopped. The behavior of this function depends on the value | |
2333 | 'print_it' in the bpstat structure. Under some circumstances we | |
2334 | may decide not to print anything here and delegate the task to | |
2335 | normal_stop(). */ | |
2336 | ||
2337 | static enum print_stop_action | |
2338 | print_bp_stop_message (bpstat bs) | |
2339 | { | |
2340 | switch (bs->print_it) | |
2341 | { | |
2342 | case print_it_noop: | |
2343 | /* Nothing should be printed for this bpstat entry. */ | |
2344 | return PRINT_UNKNOWN; | |
2345 | break; | |
2346 | ||
2347 | case print_it_done: | |
2348 | /* We still want to print the frame, but we already printed the | |
2349 | relevant messages. */ | |
2350 | return PRINT_SRC_AND_LOC; | |
2351 | break; | |
2352 | ||
2353 | case print_it_normal: | |
3086aeae DJ |
2354 | /* Normal case. Call the breakpoint's print_it method, or |
2355 | print_it_typical. */ | |
2356 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2357 | && bs->breakpoint_at->ops->print_it != NULL) | |
2358 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2359 | else | |
2360 | return print_it_typical (bs); | |
e514a9d6 | 2361 | break; |
3086aeae | 2362 | |
e514a9d6 | 2363 | default: |
8e65ff28 AC |
2364 | internal_error (__FILE__, __LINE__, |
2365 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2366 | break; |
c906108c | 2367 | } |
c906108c SS |
2368 | } |
2369 | ||
e514a9d6 JM |
2370 | /* Print a message indicating what happened. This is called from |
2371 | normal_stop(). The input to this routine is the head of the bpstat | |
2372 | list - a list of the eventpoints that caused this stop. This | |
2373 | routine calls the generic print routine for printing a message | |
2374 | about reasons for stopping. This will print (for example) the | |
2375 | "Breakpoint n," part of the output. The return value of this | |
2376 | routine is one of: | |
c906108c | 2377 | |
917317f4 JM |
2378 | PRINT_UNKNOWN: Means we printed nothing |
2379 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2380 | code to print the location. An example is |
2381 | "Breakpoint 1, " which should be followed by | |
2382 | the location. | |
917317f4 | 2383 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2384 | to also print the location part of the message. |
2385 | An example is the catch/throw messages, which | |
917317f4 JM |
2386 | don't require a location appended to the end. |
2387 | PRINT_NOTHING: We have done some printing and we don't need any | |
2388 | further info to be printed.*/ | |
c906108c | 2389 | |
917317f4 | 2390 | enum print_stop_action |
fba45db2 | 2391 | bpstat_print (bpstat bs) |
c906108c SS |
2392 | { |
2393 | int val; | |
c5aa993b | 2394 | |
c906108c | 2395 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2396 | (Currently all watchpoints go on the bpstat whether hit or not. |
2397 | That probably could (should) be changed, provided care is taken | |
c906108c | 2398 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2399 | for (; bs; bs = bs->next) |
2400 | { | |
2401 | val = print_bp_stop_message (bs); | |
2402 | if (val == PRINT_SRC_ONLY | |
2403 | || val == PRINT_SRC_AND_LOC | |
2404 | || val == PRINT_NOTHING) | |
2405 | return val; | |
2406 | } | |
c906108c | 2407 | |
e514a9d6 JM |
2408 | /* We reached the end of the chain, or we got a null BS to start |
2409 | with and nothing was printed. */ | |
917317f4 | 2410 | return PRINT_UNKNOWN; |
c906108c SS |
2411 | } |
2412 | ||
2413 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2414 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2415 | The argument is a "struct expression *" that has been cast to char * to | |
2416 | make it pass through catch_errors. */ | |
2417 | ||
2418 | static int | |
4efb68b1 | 2419 | breakpoint_cond_eval (void *exp) |
c906108c | 2420 | { |
278cd55f | 2421 | struct value *mark = value_mark (); |
c5aa993b | 2422 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2423 | value_free_to_mark (mark); |
2424 | return i; | |
2425 | } | |
2426 | ||
2427 | /* Allocate a new bpstat and chain it to the current one. */ | |
2428 | ||
2429 | static bpstat | |
831662b3 | 2430 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2431 | { |
2432 | bpstat bs; | |
2433 | ||
2434 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2435 | cbs->next = bs; | |
2436 | bs->breakpoint_at = b; | |
2437 | /* If the condition is false, etc., don't do the commands. */ | |
2438 | bs->commands = NULL; | |
2439 | bs->old_val = NULL; | |
2440 | bs->print_it = print_it_normal; | |
2441 | return bs; | |
2442 | } | |
2443 | \f | |
2444 | /* Possible return values for watchpoint_check (this can't be an enum | |
2445 | because of check_errors). */ | |
2446 | /* The watchpoint has been deleted. */ | |
2447 | #define WP_DELETED 1 | |
2448 | /* The value has changed. */ | |
2449 | #define WP_VALUE_CHANGED 2 | |
2450 | /* The value has not changed. */ | |
2451 | #define WP_VALUE_NOT_CHANGED 3 | |
2452 | ||
2453 | #define BP_TEMPFLAG 1 | |
2454 | #define BP_HARDWAREFLAG 2 | |
2455 | ||
2456 | /* Check watchpoint condition. */ | |
2457 | ||
2458 | static int | |
4efb68b1 | 2459 | watchpoint_check (void *p) |
c906108c SS |
2460 | { |
2461 | bpstat bs = (bpstat) p; | |
2462 | struct breakpoint *b; | |
2463 | struct frame_info *fr; | |
2464 | int within_current_scope; | |
2465 | ||
2466 | b = bs->breakpoint_at; | |
2467 | ||
2468 | if (b->exp_valid_block == NULL) | |
2469 | within_current_scope = 1; | |
2470 | else | |
2471 | { | |
2472 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2473 | any chance of handling watchpoints on local variables, we'll need |
2474 | the frame chain (so we can determine if we're in scope). */ | |
2475 | reinit_frame_cache (); | |
101dcfbe | 2476 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2477 | within_current_scope = (fr != NULL); |
c12260ac CV |
2478 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2479 | in the function but the stack frame has already been invalidated. | |
2480 | Since we can't rely on the values of local variables after the | |
2481 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2482 | state as `not changed' without further checking. |
2483 | ||
2484 | vinschen/2003-09-04: The former implementation left out the case | |
2485 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2486 | because the current PC is currently in an epilogue. Calling | |
2487 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2488 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2489 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2490 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2491 | if (fr && within_current_scope) |
c906108c SS |
2492 | /* If we end up stopping, the current frame will get selected |
2493 | in normal_stop. So this call to select_frame won't affect | |
2494 | the user. */ | |
0f7d239c | 2495 | select_frame (fr); |
c906108c | 2496 | } |
c5aa993b | 2497 | |
c906108c SS |
2498 | if (within_current_scope) |
2499 | { | |
2500 | /* We use value_{,free_to_}mark because it could be a | |
2501 | *long* time before we return to the command level and | |
c5aa993b JM |
2502 | call free_all_values. We can't call free_all_values because |
2503 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2504 | |
278cd55f AC |
2505 | struct value *mark = value_mark (); |
2506 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2507 | if (!value_equal (b->val, new_val)) |
2508 | { | |
2509 | release_value (new_val); | |
2510 | value_free_to_mark (mark); | |
2511 | bs->old_val = b->val; | |
2512 | b->val = new_val; | |
2513 | /* We will stop here */ | |
2514 | return WP_VALUE_CHANGED; | |
2515 | } | |
2516 | else | |
2517 | { | |
2518 | /* Nothing changed, don't do anything. */ | |
2519 | value_free_to_mark (mark); | |
2520 | /* We won't stop here */ | |
2521 | return WP_VALUE_NOT_CHANGED; | |
2522 | } | |
2523 | } | |
2524 | else | |
2525 | { | |
2526 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2527 | if we temporarily ignored the watchpoint, then when |
2528 | we reenter the block in which it is valid it contains | |
2529 | garbage (in the case of a function, it may have two | |
2530 | garbage values, one before and one after the prologue). | |
2531 | So we can't even detect the first assignment to it and | |
2532 | watch after that (since the garbage may or may not equal | |
2533 | the first value assigned). */ | |
4ce44c66 JM |
2534 | /* We print all the stop information in print_it_typical(), but |
2535 | in this case, by the time we call print_it_typical() this bp | |
2536 | will be deleted already. So we have no choice but print the | |
2537 | information here. */ | |
9dc5e2a9 | 2538 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2539 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2540 | ui_out_text (uiout, "\nWatchpoint "); |
2541 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2542 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2543 | which its expression is valid.\n"); | |
4ce44c66 | 2544 | |
c906108c | 2545 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2546 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2547 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2548 | |
2549 | return WP_DELETED; | |
2550 | } | |
2551 | } | |
2552 | ||
9709f61c | 2553 | /* Get a bpstat associated with having just stopped at address |
46587c42 JJ |
2554 | BP_ADDR in thread PTID. STOPPED_BY_WATCHPOINT is 1 if the |
2555 | target thinks we stopped due to a hardware watchpoint, 0 if we | |
2556 | know we did not trigger a hardware watchpoint, and -1 if we do not know. */ | |
c906108c SS |
2557 | |
2558 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2559 | don't understand this stop. Result is a chain of bpstat's such that: | |
2560 | ||
c5aa993b | 2561 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2562 | |
c5aa993b | 2563 | if we understand why we stopped, the result is not null. |
c906108c | 2564 | |
c5aa993b JM |
2565 | Each element of the chain refers to a particular breakpoint or |
2566 | watchpoint at which we have stopped. (We may have stopped for | |
2567 | several reasons concurrently.) | |
c906108c | 2568 | |
c5aa993b JM |
2569 | Each element of the chain has valid next, breakpoint_at, |
2570 | commands, FIXME??? fields. */ | |
c906108c SS |
2571 | |
2572 | bpstat | |
00d4360e | 2573 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid, int stopped_by_watchpoint) |
c906108c | 2574 | { |
52f0bd74 | 2575 | struct breakpoint *b, *temp; |
c906108c SS |
2576 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
2577 | int real_breakpoint = 0; | |
2578 | /* Root of the chain of bpstat's */ | |
2579 | struct bpstats root_bs[1]; | |
2580 | /* Pointer to the last thing in the chain currently. */ | |
2581 | bpstat bs = root_bs; | |
fa5281d0 | 2582 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2583 | |
c906108c | 2584 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2585 | { |
468d015d | 2586 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2587 | continue; |
2588 | ||
2589 | if (b->type != bp_watchpoint | |
46587c42 JJ |
2590 | && b->type != bp_hardware_watchpoint |
2591 | && b->type != bp_read_watchpoint | |
2592 | && b->type != bp_access_watchpoint | |
c5aa993b JM |
2593 | && b->type != bp_hardware_breakpoint |
2594 | && b->type != bp_catch_fork | |
2595 | && b->type != bp_catch_vfork | |
2596 | && b->type != bp_catch_exec | |
2597 | && b->type != bp_catch_catch | |
2598 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2599 | { |
5cab636d | 2600 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2601 | continue; |
2602 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2603 | && section_is_overlay (b->loc->section) |
2604 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2605 | continue; |
2606 | } | |
c906108c | 2607 | |
46587c42 JJ |
2608 | /* Continuable hardware watchpoints are treated as non-existent if the |
2609 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2610 | some data address). Otherwise gdb won't stop on a break instruction | |
2611 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2612 | been defined. */ | |
2613 | ||
2614 | if ((b->type == bp_hardware_watchpoint | |
2615 | || b->type == bp_read_watchpoint | |
2616 | || b->type == bp_access_watchpoint) | |
2617 | && !stopped_by_watchpoint) | |
2618 | continue; | |
2619 | ||
c02f5703 MS |
2620 | if (b->type == bp_hardware_breakpoint) |
2621 | { | |
9709f61c | 2622 | if (b->loc->address != bp_addr) |
c02f5703 MS |
2623 | continue; |
2624 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2625 | && section_is_overlay (b->loc->section) |
2626 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2627 | continue; |
2628 | } | |
c5aa993b | 2629 | |
c5aa993b JM |
2630 | /* Is this a catchpoint of a load or unload? If so, did we |
2631 | get a load or unload of the specified library? If not, | |
2632 | ignore it. */ | |
2633 | if ((b->type == bp_catch_load) | |
c906108c | 2634 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2635 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2636 | || ((b->dll_pathname != NULL) |
53a5351d | 2637 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2638 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2639 | PIDGET (inferior_ptid))) | |
53a5351d | 2640 | != 0))) |
c906108c | 2641 | #endif |
c5aa993b JM |
2642 | ) |
2643 | continue; | |
2644 | ||
2645 | if ((b->type == bp_catch_unload) | |
c906108c | 2646 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2647 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2648 | || ((b->dll_pathname != NULL) |
53a5351d | 2649 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2650 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2651 | PIDGET (inferior_ptid))) | |
53a5351d | 2652 | != 0))) |
c906108c | 2653 | #endif |
c5aa993b JM |
2654 | ) |
2655 | continue; | |
c906108c | 2656 | |
c5aa993b | 2657 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2658 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2659 | &b->forked_inferior_pid)) | |
c5aa993b | 2660 | continue; |
c906108c | 2661 | |
c5aa993b | 2662 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2663 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2664 | &b->forked_inferior_pid)) | |
c5aa993b | 2665 | continue; |
c906108c | 2666 | |
c5aa993b | 2667 | if ((b->type == bp_catch_exec) |
47932f85 | 2668 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2669 | continue; |
c906108c | 2670 | |
c5aa993b JM |
2671 | if (ep_is_exception_catchpoint (b) && |
2672 | !(current_exception_event = target_get_current_exception_event ())) | |
2673 | continue; | |
c906108c | 2674 | |
c5aa993b JM |
2675 | /* Come here if it's a watchpoint, or if the break address matches */ |
2676 | ||
2677 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2678 | ||
2679 | /* Watchpoints may change this, if not found to have triggered. */ | |
2680 | bs->stop = 1; | |
2681 | bs->print = 1; | |
2682 | ||
53a5351d JM |
2683 | if (b->type == bp_watchpoint || |
2684 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2685 | { |
9ebf4acf AC |
2686 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2687 | b->number); | |
2688 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2689 | int e = catch_errors (watchpoint_check, bs, message, | |
2690 | RETURN_MASK_ALL); | |
2691 | do_cleanups (cleanups); | |
2692 | switch (e) | |
c5aa993b JM |
2693 | { |
2694 | case WP_DELETED: | |
2695 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2696 | /* Actually this is superfluous, because by the time we |
2697 | call print_it_typical() the wp will be already deleted, | |
2698 | and the function will return immediately. */ | |
c5aa993b JM |
2699 | bs->print_it = print_it_done; |
2700 | /* Stop. */ | |
2701 | break; | |
2702 | case WP_VALUE_CHANGED: | |
2703 | /* Stop. */ | |
2704 | ++(b->hit_count); | |
2705 | break; | |
2706 | case WP_VALUE_NOT_CHANGED: | |
2707 | /* Don't stop. */ | |
2708 | bs->print_it = print_it_noop; | |
2709 | bs->stop = 0; | |
c5aa993b JM |
2710 | continue; |
2711 | default: | |
2712 | /* Can't happen. */ | |
2713 | /* FALLTHROUGH */ | |
2714 | case 0: | |
2715 | /* Error from catch_errors. */ | |
2716 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2717 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2718 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2719 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2720 | /* We've already printed what needs to be printed. */ |
2721 | bs->print_it = print_it_done; | |
2722 | ||
2723 | /* Stop. */ | |
2724 | break; | |
2725 | } | |
2726 | } | |
53a5351d JM |
2727 | else if (b->type == bp_read_watchpoint || |
2728 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2729 | { |
2730 | CORE_ADDR addr; | |
278cd55f | 2731 | struct value *v; |
c5aa993b JM |
2732 | int found = 0; |
2733 | ||
4aa7a7f5 | 2734 | if (!target_stopped_data_address (¤t_target, &addr)) |
c5aa993b JM |
2735 | continue; |
2736 | for (v = b->val_chain; v; v = v->next) | |
2737 | { | |
5c44784c JM |
2738 | if (VALUE_LVAL (v) == lval_memory |
2739 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2740 | { |
df407dfe | 2741 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
2742 | |
2743 | if (v == b->val_chain | |
2744 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2745 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2746 | { | |
2747 | CORE_ADDR vaddr; | |
2748 | ||
df407dfe | 2749 | vaddr = VALUE_ADDRESS (v) + value_offset (v); |
2e70b7b9 MS |
2750 | /* Exact match not required. Within range is |
2751 | sufficient. */ | |
2752 | if (addr >= vaddr && | |
df407dfe | 2753 | addr < vaddr + TYPE_LENGTH (value_type (v))) |
2e70b7b9 MS |
2754 | found = 1; |
2755 | } | |
c5aa993b JM |
2756 | } |
2757 | } | |
2758 | if (found) | |
9ebf4acf AC |
2759 | { |
2760 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2761 | b->number); | |
2762 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2763 | int e = catch_errors (watchpoint_check, bs, message, | |
2764 | RETURN_MASK_ALL); | |
2765 | do_cleanups (cleanups); | |
2766 | switch (e) | |
2767 | { | |
2768 | case WP_DELETED: | |
2769 | /* We've already printed what needs to be printed. */ | |
2770 | bs->print_it = print_it_done; | |
2771 | /* Stop. */ | |
2772 | break; | |
2773 | case WP_VALUE_CHANGED: | |
2774 | if (b->type == bp_read_watchpoint) | |
2775 | { | |
2776 | /* Don't stop: read watchpoints shouldn't fire if | |
2777 | the value has changed. This is for targets | |
2778 | which cannot set read-only watchpoints. */ | |
2779 | bs->print_it = print_it_noop; | |
2780 | bs->stop = 0; | |
2781 | continue; | |
2782 | } | |
2783 | ++(b->hit_count); | |
2784 | break; | |
2785 | case WP_VALUE_NOT_CHANGED: | |
2786 | /* Stop. */ | |
2787 | ++(b->hit_count); | |
2788 | break; | |
2789 | default: | |
2790 | /* Can't happen. */ | |
2791 | case 0: | |
2792 | /* Error from catch_errors. */ | |
2793 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2794 | if (b->related_breakpoint) | |
2795 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2796 | b->disposition = disp_del_at_next_stop; | |
2797 | /* We've already printed what needs to be printed. */ | |
2798 | bs->print_it = print_it_done; | |
2799 | break; | |
2800 | } | |
2801 | } | |
53a5351d JM |
2802 | else /* found == 0 */ |
2803 | { | |
2804 | /* This is a case where some watchpoint(s) triggered, | |
2805 | but not at the address of this watchpoint (FOUND | |
2806 | was left zero). So don't print anything for this | |
2807 | watchpoint. */ | |
2808 | bs->print_it = print_it_noop; | |
2809 | bs->stop = 0; | |
2810 | continue; | |
2811 | } | |
c5aa993b JM |
2812 | } |
2813 | else | |
2814 | { | |
2815 | /* By definition, an encountered breakpoint is a triggered | |
2816 | breakpoint. */ | |
2817 | ++(b->hit_count); | |
c906108c | 2818 | |
c5aa993b JM |
2819 | real_breakpoint = 1; |
2820 | } | |
2821 | ||
818dd999 AC |
2822 | if (frame_id_p (b->frame_id) |
2823 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2824 | bs->stop = 0; |
2825 | else | |
2826 | { | |
2827 | int value_is_zero = 0; | |
2828 | ||
2829 | if (b->cond) | |
2830 | { | |
2831 | /* Need to select the frame, with all that implies | |
2832 | so that the conditions will have the right context. */ | |
0f7d239c | 2833 | select_frame (get_current_frame ()); |
c5aa993b JM |
2834 | value_is_zero |
2835 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2836 | "Error in testing breakpoint condition:\n", | |
2837 | RETURN_MASK_ALL); | |
2838 | /* FIXME-someday, should give breakpoint # */ | |
2839 | free_all_values (); | |
2840 | } | |
2841 | if (b->cond && value_is_zero) | |
2842 | { | |
2843 | bs->stop = 0; | |
2844 | /* Don't consider this a hit. */ | |
2845 | --(b->hit_count); | |
2846 | } | |
fa5281d0 DJ |
2847 | else if (b->thread != -1 && b->thread != thread_id) |
2848 | { | |
2849 | bs->stop = 0; | |
2850 | /* Don't consider this a hit. */ | |
2851 | --(b->hit_count); | |
2852 | } | |
c5aa993b JM |
2853 | else if (b->ignore_count > 0) |
2854 | { | |
2855 | b->ignore_count--; | |
5c44784c | 2856 | annotate_ignore_count_change (); |
c5aa993b JM |
2857 | bs->stop = 0; |
2858 | } | |
2859 | else | |
2860 | { | |
2861 | /* We will stop here */ | |
b5de0fa7 EZ |
2862 | if (b->disposition == disp_disable) |
2863 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2864 | if (b->silent) |
2865 | bs->print = 0; | |
552f4abf | 2866 | bs->commands = b->commands; |
c5aa993b | 2867 | if (bs->commands && |
6314a349 AC |
2868 | (strcmp ("silent", bs->commands->line) == 0 |
2869 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
2870 | { |
2871 | bs->commands = bs->commands->next; | |
c906108c | 2872 | bs->print = 0; |
c5aa993b | 2873 | } |
552f4abf | 2874 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2875 | } |
2876 | } | |
2877 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2878 | if (bs->stop == 0 || bs->print == 0) | |
2879 | bs->print_it = print_it_noop; | |
2880 | } | |
c906108c SS |
2881 | |
2882 | bs->next = NULL; /* Terminate the chain */ | |
2883 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2884 | ||
c906108c SS |
2885 | /* The value of a hardware watchpoint hasn't changed, but the |
2886 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2887 | if (bs && !bs->stop && |
c906108c SS |
2888 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2889 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2890 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2891 | { | |
2892 | remove_breakpoints (); | |
2893 | insert_breakpoints (); | |
2894 | } | |
2895 | return bs; | |
2896 | } | |
2897 | \f | |
2898 | /* Tell what to do about this bpstat. */ | |
2899 | struct bpstat_what | |
fba45db2 | 2900 | bpstat_what (bpstat bs) |
c906108c SS |
2901 | { |
2902 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2903 | enum class |
2904 | { | |
2905 | /* This bpstat element has no effect on the main_action. */ | |
2906 | no_effect = 0, | |
2907 | ||
2908 | /* There was a watchpoint, stop but don't print. */ | |
2909 | wp_silent, | |
c906108c | 2910 | |
c5aa993b JM |
2911 | /* There was a watchpoint, stop and print. */ |
2912 | wp_noisy, | |
c906108c | 2913 | |
c5aa993b JM |
2914 | /* There was a breakpoint but we're not stopping. */ |
2915 | bp_nostop, | |
c906108c | 2916 | |
c5aa993b JM |
2917 | /* There was a breakpoint, stop but don't print. */ |
2918 | bp_silent, | |
c906108c | 2919 | |
c5aa993b JM |
2920 | /* There was a breakpoint, stop and print. */ |
2921 | bp_noisy, | |
c906108c | 2922 | |
c5aa993b JM |
2923 | /* We hit the longjmp breakpoint. */ |
2924 | long_jump, | |
c906108c | 2925 | |
c5aa993b JM |
2926 | /* We hit the longjmp_resume breakpoint. */ |
2927 | long_resume, | |
c906108c | 2928 | |
c5aa993b JM |
2929 | /* We hit the step_resume breakpoint. */ |
2930 | step_resume, | |
c906108c | 2931 | |
c5aa993b JM |
2932 | /* We hit the through_sigtramp breakpoint. */ |
2933 | through_sig, | |
c906108c | 2934 | |
c5aa993b JM |
2935 | /* We hit the shared library event breakpoint. */ |
2936 | shlib_event, | |
c906108c | 2937 | |
c5aa993b JM |
2938 | /* We caught a shared library event. */ |
2939 | catch_shlib_event, | |
c906108c | 2940 | |
c5aa993b JM |
2941 | /* This is just used to count how many enums there are. */ |
2942 | class_last | |
c906108c SS |
2943 | }; |
2944 | ||
2945 | /* Here is the table which drives this routine. So that we can | |
2946 | format it pretty, we define some abbreviations for the | |
2947 | enum bpstat_what codes. */ | |
2948 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2949 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2950 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2951 | #define sgl BPSTAT_WHAT_SINGLE | |
2952 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2953 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2954 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2955 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2956 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2957 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2958 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2959 | ||
2960 | /* "Can't happen." Might want to print an error message. | |
2961 | abort() is not out of the question, but chances are GDB is just | |
2962 | a bit confused, not unusable. */ | |
2963 | #define err BPSTAT_WHAT_STOP_NOISY | |
2964 | ||
2965 | /* Given an old action and a class, come up with a new action. */ | |
2966 | /* One interesting property of this table is that wp_silent is the same | |
2967 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2968 | after stopping, the check for whether to step over a breakpoint | |
2969 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2970 | reference to how we stopped. We retain separate wp_silent and |
2971 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2972 | |
2973 | Another possibly interesting property of this table is that | |
2974 | there's a partial ordering, priority-like, of the actions. Once | |
2975 | you've decided that some action is appropriate, you'll never go | |
2976 | back and decide something of a lower priority is better. The | |
2977 | ordering is: | |
2978 | ||
7e73cedf | 2979 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2980 | sgl < clrs shl shlr slr sn sr ss ts |
2981 | slr < err shl shlr sn sr ss ts | |
2982 | clr < clrs err shl shlr sn sr ss ts | |
2983 | clrs < err shl shlr sn sr ss ts | |
2984 | ss < shl shlr sn sr ts | |
2985 | sn < shl shlr sr ts | |
2986 | sr < shl shlr ts | |
2987 | shl < shlr | |
2988 | ts < | |
2989 | shlr < | |
2990 | ||
43ff13b4 JM |
2991 | What I think this means is that we don't need a damned table |
2992 | here. If you just put the rows and columns in the right order, | |
2993 | it'd look awfully regular. We could simply walk the bpstat list | |
2994 | and choose the highest priority action we find, with a little | |
2995 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2996 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2997 | is messy anyway). */ | |
c906108c SS |
2998 | |
2999 | /* step_resume entries: a step resume breakpoint overrides another | |
3000 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3001 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3002 | /* We handle the through_sigtramp_breakpoint the same way; having both |
3003 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
3004 | ||
3005 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3006 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3007 | { | |
3008 | /* old action */ | |
3009 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
3010 | */ | |
3011 | /*no_effect */ | |
3012 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
3013 | /*wp_silent */ | |
3014 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3015 | /*wp_noisy */ | |
3016 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3017 | /*bp_nostop */ | |
3018 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
3019 | /*bp_silent */ | |
3020 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3021 | /*bp_noisy */ | |
3022 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3023 | /*long_jump */ | |
a48bb0b3 | 3024 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
3025 | /*long_resume */ |
3026 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
3027 | /*step_resume */ | |
3028 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
3029 | /*through_sig */ | |
3030 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
3031 | /*shlib */ | |
3032 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
3033 | /*catch_shlib */ | |
3034 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
3035 | }; | |
c906108c SS |
3036 | |
3037 | #undef kc | |
3038 | #undef ss | |
3039 | #undef sn | |
3040 | #undef sgl | |
3041 | #undef slr | |
3042 | #undef clr | |
3043 | #undef clrs | |
3044 | #undef err | |
3045 | #undef sr | |
3046 | #undef ts | |
3047 | #undef shl | |
3048 | #undef shlr | |
3049 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3050 | struct bpstat_what retval; | |
3051 | ||
3052 | retval.call_dummy = 0; | |
3053 | for (; bs != NULL; bs = bs->next) | |
3054 | { | |
3055 | enum class bs_class = no_effect; | |
3056 | if (bs->breakpoint_at == NULL) | |
3057 | /* I suspect this can happen if it was a momentary breakpoint | |
3058 | which has since been deleted. */ | |
3059 | continue; | |
3060 | switch (bs->breakpoint_at->type) | |
3061 | { | |
3062 | case bp_none: | |
3063 | continue; | |
3064 | ||
3065 | case bp_breakpoint: | |
3066 | case bp_hardware_breakpoint: | |
3067 | case bp_until: | |
3068 | case bp_finish: | |
3069 | if (bs->stop) | |
3070 | { | |
3071 | if (bs->print) | |
3072 | bs_class = bp_noisy; | |
3073 | else | |
3074 | bs_class = bp_silent; | |
3075 | } | |
3076 | else | |
3077 | bs_class = bp_nostop; | |
3078 | break; | |
3079 | case bp_watchpoint: | |
3080 | case bp_hardware_watchpoint: | |
3081 | case bp_read_watchpoint: | |
3082 | case bp_access_watchpoint: | |
3083 | if (bs->stop) | |
3084 | { | |
3085 | if (bs->print) | |
3086 | bs_class = wp_noisy; | |
3087 | else | |
3088 | bs_class = wp_silent; | |
3089 | } | |
3090 | else | |
53a5351d JM |
3091 | /* There was a watchpoint, but we're not stopping. |
3092 | This requires no further action. */ | |
c906108c SS |
3093 | bs_class = no_effect; |
3094 | break; | |
3095 | case bp_longjmp: | |
3096 | bs_class = long_jump; | |
3097 | break; | |
3098 | case bp_longjmp_resume: | |
3099 | bs_class = long_resume; | |
3100 | break; | |
3101 | case bp_step_resume: | |
3102 | if (bs->stop) | |
3103 | { | |
3104 | bs_class = step_resume; | |
3105 | } | |
3106 | else | |
3107 | /* It is for the wrong frame. */ | |
3108 | bs_class = bp_nostop; | |
3109 | break; | |
3110 | case bp_through_sigtramp: | |
3111 | bs_class = through_sig; | |
3112 | break; | |
3113 | case bp_watchpoint_scope: | |
3114 | bs_class = bp_nostop; | |
3115 | break; | |
c5aa993b JM |
3116 | case bp_shlib_event: |
3117 | bs_class = shlib_event; | |
3118 | break; | |
c4093a6a | 3119 | case bp_thread_event: |
1900040c | 3120 | case bp_overlay_event: |
c4093a6a JM |
3121 | bs_class = bp_nostop; |
3122 | break; | |
c5aa993b JM |
3123 | case bp_catch_load: |
3124 | case bp_catch_unload: | |
3125 | /* Only if this catchpoint triggered should we cause the | |
3126 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3127 | catchpoint. */ | |
3128 | if (bs->stop) | |
3129 | bs_class = catch_shlib_event; | |
3130 | else | |
3131 | bs_class = no_effect; | |
3132 | break; | |
3133 | case bp_catch_fork: | |
3134 | case bp_catch_vfork: | |
3135 | case bp_catch_exec: | |
3136 | if (bs->stop) | |
3137 | { | |
3138 | if (bs->print) | |
3139 | bs_class = bp_noisy; | |
3140 | else | |
3141 | bs_class = bp_silent; | |
3142 | } | |
3143 | else | |
53a5351d JM |
3144 | /* There was a catchpoint, but we're not stopping. |
3145 | This requires no further action. */ | |
c5aa993b JM |
3146 | bs_class = no_effect; |
3147 | break; | |
3148 | case bp_catch_catch: | |
3149 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3150 | bs_class = bp_nostop; | |
3151 | else if (bs->stop) | |
3152 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3153 | break; | |
3154 | case bp_catch_throw: | |
3155 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3156 | bs_class = bp_nostop; | |
3157 | else if (bs->stop) | |
3158 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3159 | break; |
c906108c | 3160 | case bp_call_dummy: |
53a5351d JM |
3161 | /* Make sure the action is stop (silent or noisy), |
3162 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3163 | bs_class = bp_silent; |
3164 | retval.call_dummy = 1; | |
3165 | break; | |
3166 | } | |
c5aa993b | 3167 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3168 | } |
3169 | retval.main_action = current_action; | |
3170 | return retval; | |
3171 | } | |
3172 | ||
3173 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3174 | without hardware support). This isn't related to a specific bpstat, | |
3175 | just to things like whether watchpoints are set. */ | |
3176 | ||
c5aa993b | 3177 | int |
fba45db2 | 3178 | bpstat_should_step (void) |
c906108c SS |
3179 | { |
3180 | struct breakpoint *b; | |
3181 | ALL_BREAKPOINTS (b) | |
468d015d | 3182 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3183 | return 1; |
c906108c SS |
3184 | return 0; |
3185 | } | |
3186 | ||
3187 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3188 | int | |
fba45db2 | 3189 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3190 | { |
075f6582 DJ |
3191 | struct bp_location *bpt; |
3192 | ALL_BP_LOCATIONS (bpt) | |
468d015d | 3193 | if (breakpoint_enabled (bpt->owner) |
075f6582 DJ |
3194 | && bpt->inserted |
3195 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3196 | return 1; |
c906108c SS |
3197 | return 0; |
3198 | } | |
c906108c | 3199 | \f |
c5aa993b | 3200 | |
c906108c SS |
3201 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3202 | function returns another bpstat which contains only the catchpoints | |
3203 | on that first list, if any. */ | |
3204 | void | |
fba45db2 | 3205 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3206 | { |
3207 | struct bpstats root_bs[1]; | |
3208 | bpstat bs = root_bs; | |
3209 | struct breakpoint *ep; | |
3210 | char *dll_pathname; | |
3211 | ||
c906108c SS |
3212 | bpstat_clear (cp_list); |
3213 | root_bs->next = NULL; | |
c5aa993b JM |
3214 | |
3215 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3216 | { |
3217 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3218 | ep = ep_list->breakpoint_at; | |
3219 | if (ep == NULL) | |
c5aa993b JM |
3220 | break; |
3221 | if ((ep->type != bp_catch_load) && | |
3222 | (ep->type != bp_catch_unload) && | |
3223 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3224 | (ep->type != bp_catch_throw)) |
3225 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3226 | continue; |
3227 | ||
c906108c SS |
3228 | /* Yes; add it to the list. */ |
3229 | bs = bpstat_alloc (ep, bs); | |
3230 | *bs = *ep_list; | |
3231 | bs->next = NULL; | |
3232 | bs = root_bs->next; | |
c5aa993b | 3233 | |
c906108c SS |
3234 | #if defined(SOLIB_ADD) |
3235 | /* Also, for each triggered catchpoint, tag it with the name of | |
3236 | the library that caused this trigger. (We copy the name now, | |
3237 | because it's only guaranteed to be available NOW, when the | |
3238 | catchpoint triggers. Clients who may wish to know the name | |
3239 | later must get it from the catchpoint itself.) */ | |
3240 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3241 | xfree (ep->triggered_dll_pathname); |
c906108c | 3242 | if (ep->type == bp_catch_load) |
39f77062 KB |
3243 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3244 | PIDGET (inferior_ptid)); | |
c906108c | 3245 | else |
39f77062 KB |
3246 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3247 | PIDGET (inferior_ptid)); | |
c906108c SS |
3248 | #else |
3249 | dll_pathname = NULL; | |
3250 | #endif | |
3251 | if (dll_pathname) | |
3252 | { | |
53a5351d JM |
3253 | ep->triggered_dll_pathname = (char *) |
3254 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3255 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3256 | } | |
3257 | else | |
3258 | ep->triggered_dll_pathname = NULL; | |
3259 | } | |
c5aa993b | 3260 | |
c906108c SS |
3261 | *cp_list = bs; |
3262 | } | |
3263 | ||
c4093a6a | 3264 | /* Print B to gdb_stdout. */ |
c906108c | 3265 | static void |
c4093a6a JM |
3266 | print_one_breakpoint (struct breakpoint *b, |
3267 | CORE_ADDR *last_addr) | |
c906108c | 3268 | { |
52f0bd74 AC |
3269 | struct command_line *l; |
3270 | struct symbol *sym; | |
c4093a6a JM |
3271 | struct ep_type_description |
3272 | { | |
3273 | enum bptype type; | |
3274 | char *description; | |
3275 | }; | |
3276 | static struct ep_type_description bptypes[] = | |
c906108c | 3277 | { |
c5aa993b JM |
3278 | {bp_none, "?deleted?"}, |
3279 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3280 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3281 | {bp_until, "until"}, |
3282 | {bp_finish, "finish"}, | |
3283 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3284 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3285 | {bp_read_watchpoint, "read watchpoint"}, |
3286 | {bp_access_watchpoint, "acc watchpoint"}, | |
3287 | {bp_longjmp, "longjmp"}, | |
3288 | {bp_longjmp_resume, "longjmp resume"}, | |
3289 | {bp_step_resume, "step resume"}, | |
3290 | {bp_through_sigtramp, "sigtramp"}, | |
3291 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3292 | {bp_call_dummy, "call dummy"}, | |
3293 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3294 | {bp_thread_event, "thread events"}, |
1900040c | 3295 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3296 | {bp_catch_load, "catch load"}, |
3297 | {bp_catch_unload, "catch unload"}, | |
3298 | {bp_catch_fork, "catch fork"}, | |
3299 | {bp_catch_vfork, "catch vfork"}, | |
3300 | {bp_catch_exec, "catch exec"}, | |
3301 | {bp_catch_catch, "catch catch"}, | |
3302 | {bp_catch_throw, "catch throw"} | |
3303 | }; | |
c4093a6a | 3304 | |
c5aa993b JM |
3305 | static char *bpdisps[] = |
3306 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3307 | static char bpenables[] = "nynny"; |
c906108c | 3308 | char wrap_indent[80]; |
8b93c638 JM |
3309 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3310 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3311 | struct cleanup *bkpt_chain; |
c906108c | 3312 | |
c4093a6a | 3313 | annotate_record (); |
3b31d625 | 3314 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3315 | |
3316 | /* 1 */ | |
3317 | annotate_field (0); | |
8b93c638 | 3318 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3319 | |
3320 | /* 2 */ | |
3321 | annotate_field (1); | |
3322 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3323 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3324 | internal_error (__FILE__, __LINE__, |
3325 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3326 | (int) b->type); |
8b93c638 | 3327 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3328 | |
3329 | /* 3 */ | |
3330 | annotate_field (2); | |
8b93c638 | 3331 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3332 | |
3333 | /* 4 */ | |
3334 | annotate_field (3); | |
b5de0fa7 | 3335 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3336 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3337 | |
3338 | /* 5 and 6 */ | |
3339 | strcpy (wrap_indent, " "); | |
3340 | if (addressprint) | |
75ac9d7b MS |
3341 | { |
3342 | if (TARGET_ADDR_BIT <= 32) | |
3343 | strcat (wrap_indent, " "); | |
3344 | else | |
3345 | strcat (wrap_indent, " "); | |
3346 | } | |
c906108c | 3347 | |
3086aeae DJ |
3348 | if (b->ops != NULL && b->ops->print_one != NULL) |
3349 | b->ops->print_one (b, last_addr); | |
3350 | else | |
3351 | switch (b->type) | |
3352 | { | |
3353 | case bp_none: | |
3354 | internal_error (__FILE__, __LINE__, | |
3355 | "print_one_breakpoint: bp_none encountered\n"); | |
3356 | break; | |
c906108c | 3357 | |
3086aeae DJ |
3358 | case bp_watchpoint: |
3359 | case bp_hardware_watchpoint: | |
3360 | case bp_read_watchpoint: | |
3361 | case bp_access_watchpoint: | |
3362 | /* Field 4, the address, is omitted (which makes the columns | |
3363 | not line up too nicely with the headers, but the effect | |
3364 | is relatively readable). */ | |
3365 | if (addressprint) | |
3366 | ui_out_field_skip (uiout, "addr"); | |
3367 | annotate_field (5); | |
3368 | print_expression (b->exp, stb->stream); | |
3369 | ui_out_field_stream (uiout, "what", stb); | |
3370 | break; | |
3371 | ||
3372 | case bp_catch_load: | |
3373 | case bp_catch_unload: | |
3374 | /* Field 4, the address, is omitted (which makes the columns | |
3375 | not line up too nicely with the headers, but the effect | |
3376 | is relatively readable). */ | |
3377 | if (addressprint) | |
3378 | ui_out_field_skip (uiout, "addr"); | |
3379 | annotate_field (5); | |
3380 | if (b->dll_pathname == NULL) | |
3381 | { | |
3382 | ui_out_field_string (uiout, "what", "<any library>"); | |
3383 | ui_out_spaces (uiout, 1); | |
3384 | } | |
3385 | else | |
3386 | { | |
3387 | ui_out_text (uiout, "library \""); | |
3388 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3389 | ui_out_text (uiout, "\" "); | |
3390 | } | |
3391 | break; | |
3392 | ||
3393 | case bp_catch_fork: | |
3394 | case bp_catch_vfork: | |
3395 | /* Field 4, the address, is omitted (which makes the columns | |
3396 | not line up too nicely with the headers, but the effect | |
3397 | is relatively readable). */ | |
3398 | if (addressprint) | |
3399 | ui_out_field_skip (uiout, "addr"); | |
3400 | annotate_field (5); | |
3401 | if (b->forked_inferior_pid != 0) | |
3402 | { | |
3403 | ui_out_text (uiout, "process "); | |
3404 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3405 | ui_out_spaces (uiout, 1); | |
3406 | } | |
3407 | ||
3408 | case bp_catch_exec: | |
3409 | /* Field 4, the address, is omitted (which makes the columns | |
3410 | not line up too nicely with the headers, but the effect | |
3411 | is relatively readable). */ | |
3412 | if (addressprint) | |
3413 | ui_out_field_skip (uiout, "addr"); | |
3414 | annotate_field (5); | |
3415 | if (b->exec_pathname != NULL) | |
3416 | { | |
3417 | ui_out_text (uiout, "program \""); | |
3418 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3419 | ui_out_text (uiout, "\" "); | |
3420 | } | |
3421 | break; | |
3422 | ||
3423 | case bp_catch_catch: | |
3424 | /* Field 4, the address, is omitted (which makes the columns | |
3425 | not line up too nicely with the headers, but the effect | |
3426 | is relatively readable). */ | |
3427 | if (addressprint) | |
3428 | ui_out_field_skip (uiout, "addr"); | |
3429 | annotate_field (5); | |
3430 | ui_out_field_string (uiout, "what", "exception catch"); | |
3431 | ui_out_spaces (uiout, 1); | |
3432 | break; | |
3433 | ||
3434 | case bp_catch_throw: | |
3435 | /* Field 4, the address, is omitted (which makes the columns | |
3436 | not line up too nicely with the headers, but the effect | |
3437 | is relatively readable). */ | |
3438 | if (addressprint) | |
3439 | ui_out_field_skip (uiout, "addr"); | |
3440 | annotate_field (5); | |
3441 | ui_out_field_string (uiout, "what", "exception throw"); | |
3442 | ui_out_spaces (uiout, 1); | |
3443 | break; | |
3444 | ||
3445 | case bp_breakpoint: | |
3446 | case bp_hardware_breakpoint: | |
3447 | case bp_until: | |
3448 | case bp_finish: | |
3449 | case bp_longjmp: | |
3450 | case bp_longjmp_resume: | |
3451 | case bp_step_resume: | |
3452 | case bp_through_sigtramp: | |
3453 | case bp_watchpoint_scope: | |
3454 | case bp_call_dummy: | |
3455 | case bp_shlib_event: | |
3456 | case bp_thread_event: | |
3457 | case bp_overlay_event: | |
3458 | if (addressprint) | |
3459 | { | |
3460 | annotate_field (4); | |
0101ce28 | 3461 | if (b->pending) |
d5479188 | 3462 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 JJ |
3463 | else |
3464 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
3465 | } |
3466 | annotate_field (5); | |
5cab636d | 3467 | *last_addr = b->loc->address; |
3086aeae DJ |
3468 | if (b->source_file) |
3469 | { | |
cf3a9e5b | 3470 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3471 | if (sym) |
3472 | { | |
3473 | ui_out_text (uiout, "in "); | |
3474 | ui_out_field_string (uiout, "func", | |
3475 | SYMBOL_PRINT_NAME (sym)); | |
3476 | ui_out_wrap_hint (uiout, wrap_indent); | |
3477 | ui_out_text (uiout, " at "); | |
3478 | } | |
3479 | ui_out_field_string (uiout, "file", b->source_file); | |
3480 | ui_out_text (uiout, ":"); | |
3481 | ui_out_field_int (uiout, "line", b->line_number); | |
3482 | } | |
0101ce28 JJ |
3483 | else if (b->pending) |
3484 | { | |
3485 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3486 | } | |
3086aeae DJ |
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 | 3522 | } |
0101ce28 JJ |
3523 | |
3524 | if (b->pending && b->cond_string) | |
3525 | { | |
3526 | annotate_field (7); | |
3527 | ui_out_text (uiout, "\tstop only if "); | |
3528 | ui_out_field_string (uiout, "cond", b->cond_string); | |
3529 | ui_out_text (uiout, "\n"); | |
3530 | } | |
3531 | ||
c4093a6a JM |
3532 | if (b->thread != -1) |
3533 | { | |
3534 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3535 | ui_out_text (uiout, "\tstop only in thread "); |
3536 | ui_out_field_int (uiout, "thread", b->thread); | |
3537 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3538 | } |
3539 | ||
3540 | if (show_breakpoint_hit_counts && b->hit_count) | |
3541 | { | |
3542 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3543 | if (ep_is_catchpoint (b)) |
3544 | ui_out_text (uiout, "\tcatchpoint"); | |
3545 | else | |
3546 | ui_out_text (uiout, "\tbreakpoint"); | |
3547 | ui_out_text (uiout, " already hit "); | |
3548 | ui_out_field_int (uiout, "times", b->hit_count); | |
3549 | if (b->hit_count == 1) | |
3550 | ui_out_text (uiout, " time\n"); | |
3551 | else | |
3552 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3553 | } |
3554 | ||
fb40c209 AC |
3555 | /* Output the count also if it is zero, but only if this is |
3556 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3557 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3558 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3559 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3560 | |
c4093a6a JM |
3561 | if (b->ignore_count) |
3562 | { | |
3563 | annotate_field (8); | |
8b93c638 JM |
3564 | ui_out_text (uiout, "\tignore next "); |
3565 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3566 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3567 | } |
3568 | ||
3569 | if ((l = b->commands)) | |
3570 | { | |
3b31d625 EZ |
3571 | struct cleanup *script_chain; |
3572 | ||
c4093a6a | 3573 | annotate_field (9); |
3b31d625 | 3574 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3575 | print_command_lines (uiout, l, 4); |
3b31d625 | 3576 | do_cleanups (script_chain); |
c4093a6a | 3577 | } |
3b31d625 | 3578 | do_cleanups (bkpt_chain); |
8b93c638 | 3579 | do_cleanups (old_chain); |
c4093a6a | 3580 | } |
c5aa993b | 3581 | |
c4093a6a JM |
3582 | struct captured_breakpoint_query_args |
3583 | { | |
3584 | int bnum; | |
3585 | }; | |
c5aa993b | 3586 | |
c4093a6a | 3587 | static int |
2b65245e | 3588 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3589 | { |
3590 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3591 | struct breakpoint *b; |
c4093a6a JM |
3592 | CORE_ADDR dummy_addr = 0; |
3593 | ALL_BREAKPOINTS (b) | |
3594 | { | |
3595 | if (args->bnum == b->number) | |
c5aa993b | 3596 | { |
c4093a6a JM |
3597 | print_one_breakpoint (b, &dummy_addr); |
3598 | return GDB_RC_OK; | |
c5aa993b | 3599 | } |
c4093a6a JM |
3600 | } |
3601 | return GDB_RC_NONE; | |
3602 | } | |
c5aa993b | 3603 | |
c4093a6a | 3604 | enum gdb_rc |
2b65245e | 3605 | gdb_breakpoint_query (struct ui_out *uiout, int bnum) |
c4093a6a JM |
3606 | { |
3607 | struct captured_breakpoint_query_args args; | |
3608 | args.bnum = bnum; | |
3609 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3610 | an error. */ | |
2b65245e AC |
3611 | return catch_exceptions (uiout, do_captured_breakpoint_query, &args, |
3612 | NULL, RETURN_MASK_ALL); | |
c4093a6a | 3613 | } |
c5aa993b | 3614 | |
7f3b0473 AC |
3615 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3616 | catchpoints, et.al.). */ | |
3617 | ||
3618 | static int | |
3619 | user_settable_breakpoint (const struct breakpoint *b) | |
3620 | { | |
3621 | return (b->type == bp_breakpoint | |
3622 | || b->type == bp_catch_load | |
3623 | || b->type == bp_catch_unload | |
3624 | || b->type == bp_catch_fork | |
3625 | || b->type == bp_catch_vfork | |
3626 | || b->type == bp_catch_exec | |
3627 | || b->type == bp_catch_catch | |
3628 | || b->type == bp_catch_throw | |
3629 | || b->type == bp_hardware_breakpoint | |
3630 | || b->type == bp_watchpoint | |
3631 | || b->type == bp_read_watchpoint | |
3632 | || b->type == bp_access_watchpoint | |
3633 | || b->type == bp_hardware_watchpoint); | |
3634 | } | |
3635 | ||
3636 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3637 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3638 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3639 | |
c4093a6a | 3640 | static void |
fba45db2 | 3641 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3642 | { |
52f0bd74 | 3643 | struct breakpoint *b; |
c4093a6a | 3644 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3645 | int nr_printable_breakpoints; |
3b31d625 | 3646 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3647 | |
7f3b0473 AC |
3648 | /* Compute the number of rows in the table. */ |
3649 | nr_printable_breakpoints = 0; | |
3650 | ALL_BREAKPOINTS (b) | |
3651 | if (bnum == -1 | |
3652 | || bnum == b->number) | |
3653 | { | |
3654 | if (allflag || user_settable_breakpoint (b)) | |
3655 | nr_printable_breakpoints++; | |
3656 | } | |
3657 | ||
8b93c638 | 3658 | if (addressprint) |
3b31d625 EZ |
3659 | bkpttbl_chain |
3660 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3661 | "BreakpointTable"); | |
8b93c638 | 3662 | else |
3b31d625 EZ |
3663 | bkpttbl_chain |
3664 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3665 | "BreakpointTable"); | |
8b93c638 | 3666 | |
7f3b0473 | 3667 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3668 | annotate_breakpoints_headers (); |
3669 | if (nr_printable_breakpoints > 0) | |
3670 | annotate_field (0); | |
3671 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3672 | if (nr_printable_breakpoints > 0) | |
3673 | annotate_field (1); | |
3674 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3675 | if (nr_printable_breakpoints > 0) | |
3676 | annotate_field (2); | |
3677 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3678 | if (nr_printable_breakpoints > 0) | |
3679 | annotate_field (3); | |
3680 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3681 | if (addressprint) | |
7f3b0473 | 3682 | { |
d7faa9e7 AC |
3683 | if (nr_printable_breakpoints > 0) |
3684 | annotate_field (4); | |
7f3b0473 | 3685 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3686 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3687 | else |
b25959ec | 3688 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3689 | } |
d7faa9e7 AC |
3690 | if (nr_printable_breakpoints > 0) |
3691 | annotate_field (5); | |
3692 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3693 | ui_out_table_body (uiout); | |
3694 | if (nr_printable_breakpoints > 0) | |
3695 | annotate_breakpoints_table (); | |
7f3b0473 | 3696 | |
c4093a6a JM |
3697 | ALL_BREAKPOINTS (b) |
3698 | if (bnum == -1 | |
3699 | || bnum == b->number) | |
3700 | { | |
3701 | /* We only print out user settable breakpoints unless the | |
3702 | allflag is set. */ | |
7f3b0473 AC |
3703 | if (allflag || user_settable_breakpoint (b)) |
3704 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3705 | } |
3706 | ||
3b31d625 | 3707 | do_cleanups (bkpttbl_chain); |
698384cd | 3708 | |
7f3b0473 | 3709 | if (nr_printable_breakpoints == 0) |
c906108c | 3710 | { |
8b93c638 JM |
3711 | if (bnum == -1) |
3712 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3713 | else | |
3714 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3715 | bnum); | |
c906108c SS |
3716 | } |
3717 | else | |
c4093a6a JM |
3718 | { |
3719 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3720 | that a comparison of an unsigned with -1 is always false. */ | |
3721 | if (last_addr != (CORE_ADDR) -1) | |
3722 | set_next_address (last_addr); | |
3723 | } | |
c906108c | 3724 | |
c4093a6a JM |
3725 | /* FIXME? Should this be moved up so that it is only called when |
3726 | there have been breakpoints? */ | |
c906108c SS |
3727 | annotate_breakpoints_table_end (); |
3728 | } | |
3729 | ||
c906108c | 3730 | static void |
fba45db2 | 3731 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3732 | { |
3733 | int bnum = -1; | |
3734 | ||
3735 | if (bnum_exp) | |
bb518678 | 3736 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3737 | |
3738 | breakpoint_1 (bnum, 0); | |
3739 | } | |
3740 | ||
7a292a7a | 3741 | static void |
fba45db2 | 3742 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3743 | { |
3744 | int bnum = -1; | |
3745 | ||
3746 | if (bnum_exp) | |
bb518678 | 3747 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3748 | |
3749 | breakpoint_1 (bnum, 1); | |
3750 | } | |
3751 | ||
c906108c SS |
3752 | /* Print a message describing any breakpoints set at PC. */ |
3753 | ||
3754 | static void | |
fba45db2 | 3755 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c | 3756 | { |
52f0bd74 AC |
3757 | int others = 0; |
3758 | struct breakpoint *b; | |
c906108c SS |
3759 | |
3760 | ALL_BREAKPOINTS (b) | |
5cab636d | 3761 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3762 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 | 3763 | others++; |
c906108c SS |
3764 | if (others > 0) |
3765 | { | |
3766 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3767 | ALL_BREAKPOINTS (b) | |
5cab636d | 3768 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3769 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 MS |
3770 | { |
3771 | others--; | |
3772 | printf_filtered ("%d%s%s ", | |
3773 | b->number, | |
3774 | ((b->enable_state == bp_disabled || | |
3775 | b->enable_state == bp_shlib_disabled || | |
3776 | b->enable_state == bp_call_disabled) | |
3777 | ? " (disabled)" | |
3778 | : b->enable_state == bp_permanent | |
3779 | ? " (permanent)" | |
3780 | : ""), | |
3781 | (others > 1) ? "," | |
3782 | : ((others == 1) ? " and" : "")); | |
3783 | } | |
c906108c SS |
3784 | printf_filtered ("also set at pc "); |
3785 | print_address_numeric (pc, 1, gdb_stdout); | |
3786 | printf_filtered (".\n"); | |
3787 | } | |
3788 | } | |
3789 | \f | |
3790 | /* Set the default place to put a breakpoint | |
3791 | for the `break' command with no arguments. */ | |
3792 | ||
3793 | void | |
fba45db2 KB |
3794 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3795 | int line) | |
c906108c SS |
3796 | { |
3797 | default_breakpoint_valid = valid; | |
3798 | default_breakpoint_address = addr; | |
3799 | default_breakpoint_symtab = symtab; | |
3800 | default_breakpoint_line = line; | |
3801 | } | |
3802 | ||
e4f237da KB |
3803 | /* Return true iff it is meaningful to use the address member of |
3804 | BPT. For some breakpoint types, the address member is irrelevant | |
3805 | and it makes no sense to attempt to compare it to other addresses | |
3806 | (or use it for any other purpose either). | |
3807 | ||
3808 | More specifically, each of the following breakpoint types will always | |
3809 | have a zero valued address and we don't want check_duplicates() to mark | |
3810 | breakpoints of any of these types to be a duplicate of an actual | |
3811 | breakpoint at address zero: | |
3812 | ||
3813 | bp_watchpoint | |
3814 | bp_hardware_watchpoint | |
3815 | bp_read_watchpoint | |
3816 | bp_access_watchpoint | |
3817 | bp_catch_exec | |
3818 | bp_longjmp_resume | |
3819 | bp_catch_fork | |
3820 | bp_catch_vork */ | |
3821 | ||
3822 | static int | |
3823 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3824 | { | |
3825 | enum bptype type = bpt->type; | |
3826 | ||
3827 | return (type != bp_watchpoint | |
3828 | && type != bp_hardware_watchpoint | |
3829 | && type != bp_read_watchpoint | |
3830 | && type != bp_access_watchpoint | |
3831 | && type != bp_catch_exec | |
3832 | && type != bp_longjmp_resume | |
3833 | && type != bp_catch_fork | |
3834 | && type != bp_catch_vfork); | |
3835 | } | |
3836 | ||
9f60f21b | 3837 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3838 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3839 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3840 | If we have a permanent breakpoint at the same place as BPT, make |
3841 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3842 | |
3843 | static void | |
9f60f21b | 3844 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3845 | { |
075f6582 | 3846 | struct bp_location *b; |
52f0bd74 | 3847 | int count = 0; |
075f6582 | 3848 | struct bp_location *perm_bp = 0; |
5cab636d | 3849 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 3850 | asection *section = bpt->loc->section; |
c906108c | 3851 | |
e4f237da | 3852 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3853 | return; |
3854 | ||
075f6582 DJ |
3855 | ALL_BP_LOCATIONS (b) |
3856 | if (b->owner->enable_state != bp_disabled | |
3857 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3858 | && !b->owner->pending |
075f6582 DJ |
3859 | && b->owner->enable_state != bp_call_disabled |
3860 | && b->address == address /* address / overlay match */ | |
3861 | && (!overlay_debugging || b->section == section) | |
3862 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3863 | { |
c2c6d25f | 3864 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3865 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3866 | { |
3867 | perm_bp = b; | |
3868 | break; | |
3869 | } | |
3870 | ||
c5aa993b | 3871 | count++; |
075f6582 | 3872 | b->duplicate = count > 1; |
c5aa993b | 3873 | } |
c2c6d25f JM |
3874 | |
3875 | /* If we found a permanent breakpoint at this address, go over the | |
3876 | list again and declare all the other breakpoints there to be the | |
3877 | duplicates. */ | |
3878 | if (perm_bp) | |
3879 | { | |
075f6582 | 3880 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3881 | |
3882 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3883 | if (! perm_bp->inserted) |
8e65ff28 AC |
3884 | internal_error (__FILE__, __LINE__, |
3885 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3886 | "actually inserted"); |
3887 | ||
075f6582 | 3888 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3889 | if (b != perm_bp) |
3890 | { | |
075f6582 DJ |
3891 | if (b->owner->enable_state != bp_disabled |
3892 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3893 | && !b->owner->pending |
075f6582 DJ |
3894 | && b->owner->enable_state != bp_call_disabled |
3895 | && b->address == address /* address / overlay match */ | |
3896 | && (!overlay_debugging || b->section == section) | |
3897 | && breakpoint_address_is_meaningful (b->owner)) | |
3898 | { | |
3899 | if (b->inserted) | |
3900 | internal_error (__FILE__, __LINE__, | |
3901 | "another breakpoint was inserted on top of " | |
3902 | "a permanent breakpoint"); | |
3903 | ||
3904 | b->duplicate = 1; | |
3905 | } | |
c2c6d25f JM |
3906 | } |
3907 | } | |
c906108c SS |
3908 | } |
3909 | ||
76897487 KB |
3910 | static void |
3911 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
3912 | int bnum, int have_bnum) | |
3913 | { | |
3914 | char astr1[40]; | |
3915 | char astr2[40]; | |
3916 | ||
bb599908 PH |
3917 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
3918 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 KB |
3919 | if (have_bnum) |
3920 | warning ("Breakpoint %d address previously adjusted from %s to %s.", | |
3921 | bnum, astr1, astr2); | |
3922 | else | |
3923 | warning ("Breakpoint address adjusted from %s to %s.", astr1, astr2); | |
3924 | } | |
3925 | ||
3926 | /* Adjust a breakpoint's address to account for architectural constraints | |
3927 | on breakpoint placement. Return the adjusted address. Note: Very | |
3928 | few targets require this kind of adjustment. For most targets, | |
3929 | this function is simply the identity function. */ | |
3930 | ||
3931 | static CORE_ADDR | |
88f7da05 | 3932 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
3933 | { |
3934 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
3935 | { | |
3936 | /* Very few targets need any kind of breakpoint adjustment. */ | |
3937 | return bpaddr; | |
3938 | } | |
88f7da05 KB |
3939 | else if (bptype == bp_watchpoint |
3940 | || bptype == bp_hardware_watchpoint | |
3941 | || bptype == bp_read_watchpoint | |
3942 | || bptype == bp_access_watchpoint | |
3943 | || bptype == bp_catch_fork | |
3944 | || bptype == bp_catch_vfork | |
3945 | || bptype == bp_catch_exec) | |
3946 | { | |
3947 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
3948 | have their addresses modified. */ | |
3949 | return bpaddr; | |
3950 | } | |
76897487 KB |
3951 | else |
3952 | { | |
3953 | CORE_ADDR adjusted_bpaddr; | |
3954 | ||
3955 | /* Some targets have architectural constraints on the placement | |
3956 | of breakpoint instructions. Obtain the adjusted address. */ | |
3957 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
3958 | bpaddr); | |
3959 | ||
3960 | /* An adjusted breakpoint address can significantly alter | |
3961 | a user's expectations. Print a warning if an adjustment | |
3962 | is required. */ | |
3963 | if (adjusted_bpaddr != bpaddr) | |
3964 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
3965 | ||
3966 | return adjusted_bpaddr; | |
3967 | } | |
3968 | } | |
3969 | ||
7cc221ef DJ |
3970 | /* Allocate a struct bp_location. */ |
3971 | ||
26bb91f3 | 3972 | static struct bp_location * |
e049a4b5 | 3973 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
3974 | { |
3975 | struct bp_location *loc, *loc_p; | |
3976 | ||
3977 | loc = xmalloc (sizeof (struct bp_location)); | |
3978 | memset (loc, 0, sizeof (*loc)); | |
3979 | ||
e049a4b5 DJ |
3980 | loc->owner = bpt; |
3981 | ||
3982 | switch (bp_type) | |
3983 | { | |
3984 | case bp_breakpoint: | |
3985 | case bp_until: | |
3986 | case bp_finish: | |
3987 | case bp_longjmp: | |
3988 | case bp_longjmp_resume: | |
3989 | case bp_step_resume: | |
3990 | case bp_through_sigtramp: | |
3991 | case bp_watchpoint_scope: | |
3992 | case bp_call_dummy: | |
3993 | case bp_shlib_event: | |
3994 | case bp_thread_event: | |
3995 | case bp_overlay_event: | |
3996 | case bp_catch_load: | |
3997 | case bp_catch_unload: | |
3998 | loc->loc_type = bp_loc_software_breakpoint; | |
3999 | break; | |
4000 | case bp_hardware_breakpoint: | |
4001 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4002 | break; | |
4003 | case bp_hardware_watchpoint: | |
4004 | case bp_read_watchpoint: | |
4005 | case bp_access_watchpoint: | |
4006 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4007 | break; | |
4008 | case bp_watchpoint: | |
4009 | case bp_catch_fork: | |
4010 | case bp_catch_vfork: | |
4011 | case bp_catch_exec: | |
4012 | case bp_catch_catch: | |
4013 | case bp_catch_throw: | |
4014 | loc->loc_type = bp_loc_other; | |
4015 | break; | |
4016 | default: | |
4017 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); | |
4018 | } | |
4019 | ||
7cc221ef DJ |
4020 | /* Add this breakpoint to the end of the chain. */ |
4021 | ||
4022 | loc_p = bp_location_chain; | |
4023 | if (loc_p == 0) | |
4024 | bp_location_chain = loc; | |
4025 | else | |
4026 | { | |
4027 | while (loc_p->next) | |
4028 | loc_p = loc_p->next; | |
4029 | loc_p->next = loc; | |
4030 | } | |
4031 | ||
4032 | return loc; | |
4033 | } | |
4034 | ||
4d28f7a8 KB |
4035 | /* set_raw_breakpoint() is a low level routine for allocating and |
4036 | partially initializing a breakpoint of type BPTYPE. The newly | |
4037 | created breakpoint's address, section, source file name, and line | |
4038 | number are provided by SAL. The newly created and partially | |
4039 | initialized breakpoint is added to the breakpoint chain and | |
4040 | is also returned as the value of this function. | |
c906108c | 4041 | |
4d28f7a8 KB |
4042 | It is expected that the caller will complete the initialization of |
4043 | the newly created breakpoint struct as well as output any status | |
4044 | information regarding the creation of a new breakpoint. In | |
4045 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4046 | number! Care should be taken to not allow an error() to occur | |
4047 | prior to completing the initialization of the breakpoint. If this | |
4048 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4049 | |
4050 | struct breakpoint * | |
4d28f7a8 | 4051 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4052 | { |
52f0bd74 | 4053 | struct breakpoint *b, *b1; |
c906108c SS |
4054 | |
4055 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4056 | memset (b, 0, sizeof (*b)); | |
e049a4b5 | 4057 | b->loc = allocate_bp_location (b, bptype); |
5cab636d | 4058 | b->loc->requested_address = sal.pc; |
88f7da05 KB |
4059 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4060 | bptype); | |
c906108c SS |
4061 | if (sal.symtab == NULL) |
4062 | b->source_file = NULL; | |
4063 | else | |
4064 | b->source_file = savestring (sal.symtab->filename, | |
4065 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4066 | b->loc->section = sal.section; |
4d28f7a8 | 4067 | b->type = bptype; |
c906108c SS |
4068 | b->language = current_language->la_language; |
4069 | b->input_radix = input_radix; | |
4070 | b->thread = -1; | |
4071 | b->line_number = sal.line; | |
b5de0fa7 | 4072 | b->enable_state = bp_enabled; |
c906108c SS |
4073 | b->next = 0; |
4074 | b->silent = 0; | |
4075 | b->ignore_count = 0; | |
4076 | b->commands = NULL; | |
818dd999 | 4077 | b->frame_id = null_frame_id; |
c906108c SS |
4078 | b->dll_pathname = NULL; |
4079 | b->triggered_dll_pathname = NULL; | |
4080 | b->forked_inferior_pid = 0; | |
4081 | b->exec_pathname = NULL; | |
3086aeae | 4082 | b->ops = NULL; |
0101ce28 | 4083 | b->pending = 0; |
c906108c SS |
4084 | |
4085 | /* Add this breakpoint to the end of the chain | |
4086 | so that a list of breakpoints will come out in order | |
4087 | of increasing numbers. */ | |
4088 | ||
4089 | b1 = breakpoint_chain; | |
4090 | if (b1 == 0) | |
4091 | breakpoint_chain = b; | |
4092 | else | |
4093 | { | |
4094 | while (b1->next) | |
4095 | b1 = b1->next; | |
4096 | b1->next = b; | |
4097 | } | |
4098 | ||
9f60f21b | 4099 | check_duplicates (b); |
c906108c SS |
4100 | breakpoints_changed (); |
4101 | ||
4102 | return b; | |
4103 | } | |
4104 | ||
c2c6d25f JM |
4105 | |
4106 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4107 | instruction, hard-wired into the inferior's code. */ | |
4108 | void | |
4109 | make_breakpoint_permanent (struct breakpoint *b) | |
4110 | { | |
b5de0fa7 | 4111 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4112 | |
4113 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4114 | b->loc->inserted = 1; |
c2c6d25f JM |
4115 | } |
4116 | ||
1900040c MS |
4117 | static struct breakpoint * |
4118 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4119 | { | |
4120 | static int internal_breakpoint_number = -1; | |
4121 | struct symtab_and_line sal; | |
4122 | struct breakpoint *b; | |
4123 | ||
fe39c653 | 4124 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4125 | |
4126 | sal.pc = address; | |
4127 | sal.section = find_pc_overlay (sal.pc); | |
4128 | ||
4129 | b = set_raw_breakpoint (sal, type); | |
4130 | b->number = internal_breakpoint_number--; | |
4131 | b->disposition = disp_donttouch; | |
4132 | ||
4133 | return b; | |
4134 | } | |
4135 | ||
c906108c SS |
4136 | |
4137 | static void | |
fba45db2 | 4138 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4139 | { |
c906108c | 4140 | struct breakpoint *b; |
1900040c | 4141 | struct minimal_symbol *m; |
c906108c | 4142 | |
1900040c MS |
4143 | if (func_name == NULL) |
4144 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4145 | else | |
c906108c | 4146 | { |
5520a790 | 4147 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4148 | return; |
1900040c MS |
4149 | |
4150 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4151 | } |
c906108c | 4152 | |
b5de0fa7 | 4153 | b->enable_state = bp_disabled; |
c906108c SS |
4154 | b->silent = 1; |
4155 | if (func_name) | |
4fcf66da | 4156 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4157 | } |
4158 | ||
53a5351d JM |
4159 | /* Call this routine when stepping and nexting to enable a breakpoint |
4160 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4161 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4162 | ||
4163 | void | |
fba45db2 | 4164 | enable_longjmp_breakpoint (void) |
c906108c | 4165 | { |
52f0bd74 | 4166 | struct breakpoint *b; |
c906108c SS |
4167 | |
4168 | ALL_BREAKPOINTS (b) | |
4169 | if (b->type == bp_longjmp) | |
c5aa993b | 4170 | { |
b5de0fa7 | 4171 | b->enable_state = bp_enabled; |
9f60f21b | 4172 | check_duplicates (b); |
c5aa993b | 4173 | } |
c906108c SS |
4174 | } |
4175 | ||
4176 | void | |
fba45db2 | 4177 | disable_longjmp_breakpoint (void) |
c906108c | 4178 | { |
52f0bd74 | 4179 | struct breakpoint *b; |
c906108c SS |
4180 | |
4181 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4182 | if (b->type == bp_longjmp |
c906108c | 4183 | || b->type == bp_longjmp_resume) |
c5aa993b | 4184 | { |
b5de0fa7 | 4185 | b->enable_state = bp_disabled; |
9f60f21b | 4186 | check_duplicates (b); |
c5aa993b | 4187 | } |
c906108c SS |
4188 | } |
4189 | ||
1900040c MS |
4190 | static void |
4191 | create_overlay_event_breakpoint (char *func_name) | |
4192 | { | |
4193 | struct breakpoint *b; | |
4194 | struct minimal_symbol *m; | |
4195 | ||
5520a790 | 4196 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4197 | return; |
4198 | ||
4199 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4200 | bp_overlay_event); | |
4201 | b->addr_string = xstrdup (func_name); | |
4202 | ||
4203 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4204 | { |
4205 | b->enable_state = bp_enabled; | |
4206 | overlay_events_enabled = 1; | |
4207 | } | |
1900040c | 4208 | else |
c02f5703 MS |
4209 | { |
4210 | b->enable_state = bp_disabled; | |
4211 | overlay_events_enabled = 0; | |
4212 | } | |
1900040c MS |
4213 | } |
4214 | ||
4215 | void | |
4216 | enable_overlay_breakpoints (void) | |
4217 | { | |
52f0bd74 | 4218 | struct breakpoint *b; |
1900040c MS |
4219 | |
4220 | ALL_BREAKPOINTS (b) | |
4221 | if (b->type == bp_overlay_event) | |
4222 | { | |
4223 | b->enable_state = bp_enabled; | |
4224 | check_duplicates (b); | |
c02f5703 | 4225 | overlay_events_enabled = 1; |
1900040c MS |
4226 | } |
4227 | } | |
4228 | ||
4229 | void | |
4230 | disable_overlay_breakpoints (void) | |
4231 | { | |
52f0bd74 | 4232 | struct breakpoint *b; |
1900040c MS |
4233 | |
4234 | ALL_BREAKPOINTS (b) | |
4235 | if (b->type == bp_overlay_event) | |
4236 | { | |
4237 | b->enable_state = bp_disabled; | |
4238 | check_duplicates (b); | |
c02f5703 | 4239 | overlay_events_enabled = 0; |
1900040c MS |
4240 | } |
4241 | } | |
4242 | ||
c4093a6a | 4243 | struct breakpoint * |
fba45db2 | 4244 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4245 | { |
4246 | struct breakpoint *b; | |
c4093a6a | 4247 | |
1900040c | 4248 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4249 | |
b5de0fa7 | 4250 | b->enable_state = bp_enabled; |
c4093a6a | 4251 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4252 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4253 | |
4254 | return b; | |
4255 | } | |
4256 | ||
4257 | void | |
4258 | remove_thread_event_breakpoints (void) | |
4259 | { | |
4260 | struct breakpoint *b, *temp; | |
4261 | ||
4262 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4263 | if (b->type == bp_thread_event) | |
4264 | delete_breakpoint (b); | |
4265 | } | |
4266 | ||
0101ce28 JJ |
4267 | struct captured_parse_breakpoint_args |
4268 | { | |
4269 | char **arg_p; | |
4270 | struct symtabs_and_lines *sals_p; | |
4271 | char ***addr_string_p; | |
4272 | int *not_found_ptr; | |
4273 | }; | |
4274 | ||
4275 | struct lang_and_radix | |
4276 | { | |
4277 | enum language lang; | |
4278 | int radix; | |
4279 | }; | |
4280 | ||
4281 | /* Cleanup helper routine to restore the current language and | |
4282 | input radix. */ | |
4283 | static void | |
4284 | do_restore_lang_radix_cleanup (void *old) | |
4285 | { | |
4286 | struct lang_and_radix *p = old; | |
4287 | set_language (p->lang); | |
4288 | input_radix = p->radix; | |
4289 | } | |
4290 | ||
4291 | /* Try and resolve a pending breakpoint. */ | |
4292 | static int | |
4293 | resolve_pending_breakpoint (struct breakpoint *b) | |
4294 | { | |
4295 | /* Try and reparse the breakpoint in case the shared library | |
4296 | is now loaded. */ | |
4297 | struct symtabs_and_lines sals; | |
4298 | struct symtab_and_line pending_sal; | |
4299 | char **cond_string = (char **) NULL; | |
4300 | char *copy_arg = b->addr_string; | |
4301 | char **addr_string; | |
4302 | char *errmsg; | |
4303 | int rc; | |
4304 | int not_found = 0; | |
4305 | struct ui_file *old_gdb_stderr; | |
4306 | struct lang_and_radix old_lr; | |
4307 | struct cleanup *old_chain; | |
4308 | ||
4309 | /* Set language, input-radix, then reissue breakpoint command. | |
4310 | Ensure the language and input-radix are restored afterwards. */ | |
4311 | old_lr.lang = current_language->la_language; | |
4312 | old_lr.radix = input_radix; | |
4313 | old_chain = make_cleanup (do_restore_lang_radix_cleanup, &old_lr); | |
4314 | ||
4315 | set_language (b->language); | |
4316 | input_radix = b->input_radix; | |
4317 | rc = break_command_1 (b->addr_string, b->flag, b->from_tty, b); | |
4318 | ||
4319 | if (rc == GDB_RC_OK) | |
4320 | /* Pending breakpoint has been resolved. */ | |
4321 | printf_filtered ("Pending breakpoint \"%s\" resolved\n", b->addr_string); | |
4322 | ||
4323 | do_cleanups (old_chain); | |
4324 | return rc; | |
4325 | } | |
4326 | ||
cae688ec JJ |
4327 | #ifdef SOLIB_ADD |
4328 | void | |
4329 | remove_solib_event_breakpoints (void) | |
4330 | { | |
4331 | struct breakpoint *b, *temp; | |
4332 | ||
4333 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4334 | if (b->type == bp_shlib_event) | |
4335 | delete_breakpoint (b); | |
4336 | } | |
4337 | ||
4338 | struct breakpoint * | |
4339 | create_solib_event_breakpoint (CORE_ADDR address) | |
4340 | { | |
4341 | struct breakpoint *b; | |
4342 | ||
4343 | b = create_internal_breakpoint (address, bp_shlib_event); | |
4344 | return b; | |
4345 | } | |
4346 | ||
4347 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4348 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4349 | ||
4350 | void | |
4351 | disable_breakpoints_in_shlibs (int silent) | |
4352 | { | |
4353 | struct breakpoint *b; | |
4354 | int disabled_shlib_breaks = 0; | |
4355 | ||
4356 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4357 | ALL_BREAKPOINTS (b) | |
4358 | { | |
4359 | #if defined (PC_SOLIB) | |
4360 | if (((b->type == bp_breakpoint) || | |
4361 | (b->type == bp_hardware_breakpoint)) && | |
4362 | breakpoint_enabled (b) && | |
4363 | !b->loc->duplicate && | |
4364 | PC_SOLIB (b->loc->address)) | |
4365 | { | |
4366 | b->enable_state = bp_shlib_disabled; | |
4367 | if (!silent) | |
4368 | { | |
4369 | if (!disabled_shlib_breaks) | |
4370 | { | |
4371 | target_terminal_ours_for_output (); | |
4372 | warning ("Temporarily disabling shared library breakpoints:"); | |
4373 | } | |
4374 | disabled_shlib_breaks = 1; | |
4375 | warning ("breakpoint #%d ", b->number); | |
4376 | } | |
4377 | } | |
4378 | #endif | |
4379 | } | |
4380 | } | |
4381 | ||
84acb35a JJ |
4382 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4383 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4384 | ||
4385 | void | |
4386 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) | |
4387 | { | |
4388 | struct breakpoint *b; | |
4389 | int disabled_shlib_breaks = 0; | |
4390 | ||
4391 | #if defined (PC_SOLIB) | |
4392 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4393 | ALL_BREAKPOINTS (b) | |
4394 | { | |
4395 | if ((b->loc->loc_type == bp_loc_hardware_breakpoint | |
4396 | || b->loc->loc_type == bp_loc_software_breakpoint) | |
4397 | && breakpoint_enabled (b) | |
4398 | && !b->loc->duplicate) | |
4399 | { | |
4400 | char *so_name = PC_SOLIB (b->loc->address); | |
4401 | if (so_name | |
4402 | && !strcmp (so_name, solib->so_name)) | |
4403 | { | |
4404 | b->enable_state = bp_shlib_disabled; | |
4405 | /* At this point, we cannot rely on remove_breakpoint | |
4406 | succeeding so we must mark the breakpoint as not inserted | |
4407 | to prevent future errors occurring in remove_breakpoints. */ | |
4408 | b->loc->inserted = 0; | |
4409 | if (!disabled_shlib_breaks) | |
4410 | { | |
4411 | target_terminal_ours_for_output (); | |
4412 | warning ("Temporarily disabling breakpoints for unloaded shared library \"%s\"", | |
4413 | so_name); | |
4414 | } | |
4415 | disabled_shlib_breaks = 1; | |
4416 | } | |
4417 | } | |
4418 | } | |
4419 | #endif | |
4420 | } | |
4421 | ||
c906108c SS |
4422 | /* Try to reenable any breakpoints in shared libraries. */ |
4423 | void | |
fba45db2 | 4424 | re_enable_breakpoints_in_shlibs (void) |
c906108c | 4425 | { |
0101ce28 | 4426 | struct breakpoint *b, *tmp; |
c906108c | 4427 | |
0101ce28 JJ |
4428 | ALL_BREAKPOINTS_SAFE (b, tmp) |
4429 | { | |
b5de0fa7 | 4430 | if (b->enable_state == bp_shlib_disabled) |
0101ce28 JJ |
4431 | { |
4432 | char buf[1], *lib; | |
4433 | ||
4434 | /* Do not reenable the breakpoint if the shared library | |
4435 | is still not mapped in. */ | |
4436 | lib = PC_SOLIB (b->loc->address); | |
4437 | if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0) | |
4438 | b->enable_state = bp_enabled; | |
4439 | } | |
4440 | else if (b->pending && (b->enable_state == bp_enabled)) | |
4441 | { | |
4442 | if (resolve_pending_breakpoint (b) == GDB_RC_OK) | |
4443 | delete_breakpoint (b); | |
4444 | } | |
4445 | } | |
c906108c SS |
4446 | } |
4447 | ||
4448 | #endif | |
4449 | ||
4450 | static void | |
fba45db2 KB |
4451 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4452 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4453 | { |
c5aa993b | 4454 | struct breakpoint *b; |
c906108c | 4455 | struct symtabs_and_lines sals; |
c5aa993b JM |
4456 | struct cleanup *old_chain; |
4457 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4458 | char *addr_start = hookname; |
4459 | char *addr_end = NULL; | |
4460 | char **canonical = (char **) NULL; | |
4461 | int thread = -1; /* All threads. */ | |
4462 | ||
c906108c | 4463 | /* Set a breakpoint on the specified hook. */ |
68219205 | 4464 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical, NULL); |
c906108c | 4465 | addr_end = hookname; |
c5aa993b | 4466 | |
c906108c SS |
4467 | if (sals.nelts == 0) |
4468 | { | |
4469 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4470 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4471 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4472 | return; | |
4473 | } | |
4474 | if (sals.nelts != 1) | |
4475 | { | |
53a5351d | 4476 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4477 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4478 | return; | |
4479 | } | |
4480 | ||
53a5351d JM |
4481 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4482 | in case the following errors out. */ | |
b8c9b27d | 4483 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4484 | if (canonical != (char **) NULL) |
c906108c | 4485 | { |
b8c9b27d | 4486 | make_cleanup (xfree, canonical); |
c906108c SS |
4487 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4488 | if (canonical[0] != NULL) | |
b8c9b27d | 4489 | make_cleanup (xfree, canonical[0]); |
c906108c | 4490 | } |
c5aa993b | 4491 | |
c906108c | 4492 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4493 | |
c906108c | 4494 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4495 | if (canonical != (char **) NULL) |
c906108c | 4496 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4497 | |
4d28f7a8 | 4498 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4499 | set_breakpoint_count (breakpoint_count + 1); |
4500 | b->number = breakpoint_count; | |
4501 | b->cond = NULL; | |
53a5351d JM |
4502 | b->cond_string = (cond_string == NULL) ? |
4503 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4504 | b->thread = thread; |
c5aa993b JM |
4505 | |
4506 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4507 | b->addr_string = canonical[0]; |
4508 | else if (addr_start) | |
4509 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4510 | |
b5de0fa7 EZ |
4511 | b->enable_state = bp_enabled; |
4512 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4513 | |
c906108c SS |
4514 | if (dll_pathname == NULL) |
4515 | b->dll_pathname = NULL; | |
4516 | else | |
4517 | { | |
4518 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4519 | strcpy (b->dll_pathname, dll_pathname); | |
4520 | } | |
c5aa993b | 4521 | |
c906108c SS |
4522 | mention (b); |
4523 | do_cleanups (old_chain); | |
4524 | } | |
4525 | ||
4526 | void | |
fba45db2 KB |
4527 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4528 | char *dll_pathname, char *cond_string) | |
c906108c | 4529 | { |
53a5351d JM |
4530 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4531 | cond_string, bp_catch_load); | |
c906108c SS |
4532 | } |
4533 | ||
4534 | void | |
fba45db2 KB |
4535 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4536 | char *dll_pathname, char *cond_string) | |
c906108c | 4537 | { |
53a5351d JM |
4538 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4539 | cond_string, bp_catch_unload); | |
c906108c SS |
4540 | } |
4541 | ||
4542 | static void | |
fba45db2 KB |
4543 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4544 | enum bptype bp_kind) | |
c906108c | 4545 | { |
c5aa993b JM |
4546 | struct symtab_and_line sal; |
4547 | struct breakpoint *b; | |
4548 | int thread = -1; /* All threads. */ | |
4549 | ||
fe39c653 | 4550 | init_sal (&sal); |
c906108c SS |
4551 | sal.pc = 0; |
4552 | sal.symtab = NULL; | |
4553 | sal.line = 0; | |
c5aa993b | 4554 | |
4d28f7a8 | 4555 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4556 | set_breakpoint_count (breakpoint_count + 1); |
4557 | b->number = breakpoint_count; | |
4558 | b->cond = NULL; | |
53a5351d JM |
4559 | b->cond_string = (cond_string == NULL) ? |
4560 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4561 | b->thread = thread; |
4562 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4563 | b->enable_state = bp_enabled; |
4564 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4565 | b->forked_inferior_pid = 0; |
c5aa993b | 4566 | |
c906108c SS |
4567 | mention (b); |
4568 | } | |
4569 | ||
4570 | void | |
fba45db2 | 4571 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4572 | { |
4573 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4574 | } | |
c5aa993b | 4575 | |
c906108c | 4576 | void |
fba45db2 | 4577 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4578 | { |
4579 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4580 | } | |
4581 | ||
4582 | void | |
fba45db2 | 4583 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4584 | { |
c5aa993b JM |
4585 | struct symtab_and_line sal; |
4586 | struct breakpoint *b; | |
4587 | int thread = -1; /* All threads. */ | |
c906108c | 4588 | |
fe39c653 | 4589 | init_sal (&sal); |
c906108c SS |
4590 | sal.pc = 0; |
4591 | sal.symtab = NULL; | |
4592 | sal.line = 0; | |
4593 | ||
4d28f7a8 | 4594 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4595 | set_breakpoint_count (breakpoint_count + 1); |
4596 | b->number = breakpoint_count; | |
4597 | b->cond = NULL; | |
53a5351d JM |
4598 | b->cond_string = (cond_string == NULL) ? |
4599 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4600 | b->thread = thread; |
4601 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4602 | b->enable_state = bp_enabled; |
4603 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4604 | |
c906108c SS |
4605 | mention (b); |
4606 | } | |
4607 | ||
4608 | static int | |
fba45db2 | 4609 | hw_breakpoint_used_count (void) |
c906108c | 4610 | { |
52f0bd74 | 4611 | struct breakpoint *b; |
c906108c SS |
4612 | int i = 0; |
4613 | ||
4614 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4615 | { |
b5de0fa7 | 4616 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4617 | i++; |
4618 | } | |
c906108c SS |
4619 | |
4620 | return i; | |
4621 | } | |
4622 | ||
4623 | static int | |
fba45db2 | 4624 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4625 | { |
52f0bd74 | 4626 | struct breakpoint *b; |
c906108c SS |
4627 | int i = 0; |
4628 | ||
4629 | *other_type_used = 0; | |
4630 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4631 | { |
468d015d | 4632 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4633 | { |
4634 | if (b->type == type) | |
4635 | i++; | |
4636 | else if ((b->type == bp_hardware_watchpoint || | |
4637 | b->type == bp_read_watchpoint || | |
468d015d | 4638 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4639 | *other_type_used = 1; |
4640 | } | |
4641 | } | |
c906108c SS |
4642 | return i; |
4643 | } | |
4644 | ||
53a5351d JM |
4645 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4646 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4647 | |
53a5351d JM |
4648 | FIXME - This ought to be done by setting a temporary breakpoint |
4649 | that gets deleted automatically... */ | |
c906108c SS |
4650 | |
4651 | void | |
818dd999 | 4652 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4653 | { |
52f0bd74 | 4654 | struct breakpoint *b; |
c906108c SS |
4655 | |
4656 | ALL_BREAKPOINTS (b) | |
4657 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4658 | { |
5cab636d | 4659 | b->loc->requested_address = pc; |
88f7da05 KB |
4660 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4661 | b->type); | |
b5de0fa7 | 4662 | b->enable_state = bp_enabled; |
818dd999 | 4663 | b->frame_id = frame_id; |
9f60f21b | 4664 | check_duplicates (b); |
c5aa993b JM |
4665 | return; |
4666 | } | |
c906108c SS |
4667 | } |
4668 | ||
4669 | void | |
fba45db2 | 4670 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4671 | { |
c5aa993b | 4672 | struct breakpoint *b; |
c906108c SS |
4673 | |
4674 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4675 | { |
4676 | if (((b->type == bp_watchpoint) | |
4677 | || (b->type == bp_hardware_watchpoint) | |
4678 | || (b->type == bp_read_watchpoint) | |
4679 | || (b->type == bp_access_watchpoint) | |
4680 | || ep_is_exception_catchpoint (b)) | |
468d015d | 4681 | && breakpoint_enabled (b)) |
c5aa993b | 4682 | { |
b5de0fa7 | 4683 | b->enable_state = bp_call_disabled; |
9f60f21b | 4684 | check_duplicates (b); |
c5aa993b JM |
4685 | } |
4686 | } | |
c906108c SS |
4687 | } |
4688 | ||
4689 | void | |
fba45db2 | 4690 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4691 | { |
c5aa993b | 4692 | struct breakpoint *b; |
c906108c SS |
4693 | |
4694 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4695 | { |
4696 | if (((b->type == bp_watchpoint) | |
4697 | || (b->type == bp_hardware_watchpoint) | |
4698 | || (b->type == bp_read_watchpoint) | |
4699 | || (b->type == bp_access_watchpoint) | |
4700 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4701 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4702 | { |
b5de0fa7 | 4703 | b->enable_state = bp_enabled; |
9f60f21b | 4704 | check_duplicates (b); |
c5aa993b JM |
4705 | } |
4706 | } | |
c906108c SS |
4707 | } |
4708 | ||
4709 | ||
4710 | /* Set a breakpoint that will evaporate an end of command | |
4711 | at address specified by SAL. | |
4712 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4713 | ||
4714 | struct breakpoint * | |
818dd999 | 4715 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4716 | enum bptype type) |
c906108c | 4717 | { |
52f0bd74 | 4718 | struct breakpoint *b; |
4d28f7a8 | 4719 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4720 | b->enable_state = bp_enabled; |
4721 | b->disposition = disp_donttouch; | |
818dd999 | 4722 | b->frame_id = frame_id; |
c906108c SS |
4723 | |
4724 | /* If we're debugging a multi-threaded program, then we | |
4725 | want momentary breakpoints to be active in only a | |
4726 | single thread of control. */ | |
39f77062 KB |
4727 | if (in_thread_list (inferior_ptid)) |
4728 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4729 | |
4730 | return b; | |
4731 | } | |
c906108c | 4732 | \f |
c5aa993b | 4733 | |
c906108c SS |
4734 | /* Tell the user we have just set a breakpoint B. */ |
4735 | ||
4736 | static void | |
fba45db2 | 4737 | mention (struct breakpoint *b) |
c906108c SS |
4738 | { |
4739 | int say_where = 0; | |
3b31d625 | 4740 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4741 | struct ui_stream *stb; |
4742 | ||
4743 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4744 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4745 | |
9a4105ab AC |
4746 | /* FIXME: This is misplaced; mention() is called by things (like |
4747 | hitting a watchpoint) other than breakpoint creation. It should | |
4748 | be possible to clean this up and at the same time replace the | |
4749 | random calls to breakpoint_changed with this hook, as has already | |
4750 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4751 | if (deprecated_create_breakpoint_hook) | |
4752 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4753 | breakpoint_create_event (b->number); |
c906108c | 4754 | |
3086aeae DJ |
4755 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4756 | b->ops->print_mention (b); | |
4757 | else | |
4758 | switch (b->type) | |
4759 | { | |
4760 | case bp_none: | |
4761 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4762 | break; | |
4763 | case bp_watchpoint: | |
4764 | ui_out_text (uiout, "Watchpoint "); | |
4765 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4766 | ui_out_field_int (uiout, "number", b->number); | |
4767 | ui_out_text (uiout, ": "); | |
4768 | print_expression (b->exp, stb->stream); | |
4769 | ui_out_field_stream (uiout, "exp", stb); | |
4770 | do_cleanups (ui_out_chain); | |
4771 | break; | |
4772 | case bp_hardware_watchpoint: | |
4773 | ui_out_text (uiout, "Hardware watchpoint "); | |
4774 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4775 | ui_out_field_int (uiout, "number", b->number); | |
4776 | ui_out_text (uiout, ": "); | |
4777 | print_expression (b->exp, stb->stream); | |
4778 | ui_out_field_stream (uiout, "exp", stb); | |
4779 | do_cleanups (ui_out_chain); | |
4780 | break; | |
4781 | case bp_read_watchpoint: | |
4782 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4783 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4784 | ui_out_field_int (uiout, "number", b->number); | |
4785 | ui_out_text (uiout, ": "); | |
4786 | print_expression (b->exp, stb->stream); | |
4787 | ui_out_field_stream (uiout, "exp", stb); | |
4788 | do_cleanups (ui_out_chain); | |
4789 | break; | |
4790 | case bp_access_watchpoint: | |
4791 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4792 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4793 | ui_out_field_int (uiout, "number", b->number); | |
4794 | ui_out_text (uiout, ": "); | |
4795 | print_expression (b->exp, stb->stream); | |
4796 | ui_out_field_stream (uiout, "exp", stb); | |
4797 | do_cleanups (ui_out_chain); | |
4798 | break; | |
4799 | case bp_breakpoint: | |
4800 | if (ui_out_is_mi_like_p (uiout)) | |
4801 | { | |
4802 | say_where = 0; | |
4803 | break; | |
4804 | } | |
4805 | printf_filtered ("Breakpoint %d", b->number); | |
4806 | say_where = 1; | |
4807 | break; | |
4808 | case bp_hardware_breakpoint: | |
4809 | if (ui_out_is_mi_like_p (uiout)) | |
4810 | { | |
4811 | say_where = 0; | |
4812 | break; | |
4813 | } | |
4814 | printf_filtered ("Hardware assisted breakpoint %d", b->number); | |
4815 | say_where = 1; | |
4816 | break; | |
4817 | case bp_catch_load: | |
4818 | case bp_catch_unload: | |
4819 | printf_filtered ("Catchpoint %d (%s %s)", | |
4820 | b->number, | |
4821 | (b->type == bp_catch_load) ? "load" : "unload", | |
4822 | (b->dll_pathname != NULL) ? | |
4823 | b->dll_pathname : "<any library>"); | |
4824 | break; | |
4825 | case bp_catch_fork: | |
4826 | case bp_catch_vfork: | |
4827 | printf_filtered ("Catchpoint %d (%s)", | |
4828 | b->number, | |
4829 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4830 | break; | |
4831 | case bp_catch_exec: | |
4832 | printf_filtered ("Catchpoint %d (exec)", | |
4833 | b->number); | |
4834 | break; | |
4835 | case bp_catch_catch: | |
4836 | case bp_catch_throw: | |
4837 | printf_filtered ("Catchpoint %d (%s)", | |
4838 | b->number, | |
4839 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
4840 | break; | |
4841 | ||
4842 | case bp_until: | |
4843 | case bp_finish: | |
4844 | case bp_longjmp: | |
4845 | case bp_longjmp_resume: | |
4846 | case bp_step_resume: | |
4847 | case bp_through_sigtramp: | |
4848 | case bp_call_dummy: | |
4849 | case bp_watchpoint_scope: | |
4850 | case bp_shlib_event: | |
4851 | case bp_thread_event: | |
4852 | case bp_overlay_event: | |
4853 | break; | |
4854 | } | |
c906108c | 4855 | |
c906108c SS |
4856 | if (say_where) |
4857 | { | |
0101ce28 | 4858 | if (b->pending) |
c906108c | 4859 | { |
0101ce28 JJ |
4860 | printf_filtered (" (%s) pending.", b->addr_string); |
4861 | } | |
4862 | else | |
4863 | { | |
4864 | if (addressprint || b->source_file == NULL) | |
4865 | { | |
4866 | printf_filtered (" at "); | |
4867 | print_address_numeric (b->loc->address, 1, gdb_stdout); | |
4868 | } | |
4869 | if (b->source_file) | |
4870 | printf_filtered (": file %s, line %d.", | |
4871 | b->source_file, b->line_number); | |
c906108c | 4872 | } |
c906108c | 4873 | } |
8b93c638 | 4874 | do_cleanups (old_chain); |
9dc5e2a9 | 4875 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4876 | return; |
c906108c SS |
4877 | printf_filtered ("\n"); |
4878 | } | |
c906108c | 4879 | \f |
c5aa993b | 4880 | |
c3f6f71d JM |
4881 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4882 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4883 | COND[i] and COND_STRING[i] values. | |
4884 | ||
0101ce28 JJ |
4885 | The parameter PENDING_BP points to a pending breakpoint that is |
4886 | the basis of the breakpoints currently being created. The pending | |
4887 | breakpoint may contain a separate condition string or commands | |
4888 | that were added after the initial pending breakpoint was created. | |
4889 | ||
c3f6f71d JM |
4890 | NOTE: If the function succeeds, the caller is expected to cleanup |
4891 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4892 | array contents). If the function fails (error() is called), the | |
4893 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4894 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4895 | |
4896 | static void | |
c3f6f71d JM |
4897 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4898 | struct expression **cond, char **cond_string, | |
4899 | enum bptype type, enum bpdisp disposition, | |
0101ce28 JJ |
4900 | int thread, int ignore_count, int from_tty, |
4901 | struct breakpoint *pending_bp) | |
c906108c | 4902 | { |
c3f6f71d JM |
4903 | if (type == bp_hardware_breakpoint) |
4904 | { | |
4905 | int i = hw_breakpoint_used_count (); | |
4906 | int target_resources_ok = | |
4907 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4908 | i + sals.nelts, 0); | |
4909 | if (target_resources_ok == 0) | |
4910 | error ("No hardware breakpoint support in the target."); | |
4911 | else if (target_resources_ok < 0) | |
4912 | error ("Hardware breakpoints used exceeds limit."); | |
4913 | } | |
c906108c | 4914 | |
c3f6f71d JM |
4915 | /* Now set all the breakpoints. */ |
4916 | { | |
4917 | int i; | |
4918 | for (i = 0; i < sals.nelts; i++) | |
4919 | { | |
4920 | struct breakpoint *b; | |
4921 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4922 | |
c3f6f71d JM |
4923 | if (from_tty) |
4924 | describe_other_breakpoints (sal.pc, sal.section); | |
4925 | ||
4d28f7a8 | 4926 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4927 | set_breakpoint_count (breakpoint_count + 1); |
4928 | b->number = breakpoint_count; | |
c3f6f71d JM |
4929 | b->cond = cond[i]; |
4930 | b->thread = thread; | |
d8ef46f5 DJ |
4931 | if (addr_string[i]) |
4932 | b->addr_string = addr_string[i]; | |
4933 | else | |
4934 | /* addr_string has to be used or breakpoint_re_set will delete | |
4935 | me. */ | |
b435e160 | 4936 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c3f6f71d JM |
4937 | b->cond_string = cond_string[i]; |
4938 | b->ignore_count = ignore_count; | |
b5de0fa7 | 4939 | b->enable_state = bp_enabled; |
c3f6f71d | 4940 | b->disposition = disposition; |
0101ce28 JJ |
4941 | /* If resolving a pending breakpoint, a check must be made to see if |
4942 | the user has specified a new condition or commands for the | |
4943 | breakpoint. A new condition will override any condition that was | |
4944 | initially specified with the initial breakpoint command. */ | |
4945 | if (pending_bp) | |
4946 | { | |
4947 | char *arg; | |
4948 | if (pending_bp->cond_string) | |
4949 | { | |
4950 | arg = pending_bp->cond_string; | |
4951 | b->cond_string = savestring (arg, strlen (arg)); | |
4952 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
4953 | if (*arg) | |
4954 | error ("Junk at end of pending breakpoint condition expression"); | |
4955 | } | |
4956 | /* If there are commands associated with the breakpoint, they should | |
4957 | be copied too. */ | |
4958 | if (pending_bp->commands) | |
4959 | b->commands = copy_command_lines (pending_bp->commands); | |
0a5e7efe JI |
4960 | |
4961 | /* We have to copy over the ignore_count and thread as well. */ | |
4962 | b->ignore_count = pending_bp->ignore_count; | |
4963 | b->thread = pending_bp->thread; | |
0101ce28 | 4964 | } |
c3f6f71d JM |
4965 | mention (b); |
4966 | } | |
4967 | } | |
4968 | } | |
c906108c | 4969 | |
c3f6f71d JM |
4970 | /* Parse ARG which is assumed to be a SAL specification possibly |
4971 | followed by conditionals. On return, SALS contains an array of SAL | |
4972 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4973 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4974 | |
b9362cc7 | 4975 | static void |
c3f6f71d JM |
4976 | parse_breakpoint_sals (char **address, |
4977 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
4978 | char ***addr_string, |
4979 | int *not_found_ptr) | |
c3f6f71d JM |
4980 | { |
4981 | char *addr_start = *address; | |
4982 | *addr_string = NULL; | |
4983 | /* If no arg given, or if first arg is 'if ', use the default | |
4984 | breakpoint. */ | |
4985 | if ((*address) == NULL | |
4986 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4987 | { |
4988 | if (default_breakpoint_valid) | |
4989 | { | |
c3f6f71d | 4990 | struct symtab_and_line sal; |
fe39c653 | 4991 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 4992 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
4993 | xmalloc (sizeof (struct symtab_and_line)); |
4994 | sal.pc = default_breakpoint_address; | |
4995 | sal.line = default_breakpoint_line; | |
4996 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4997 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4998 | sals->sals[0] = sal; |
4999 | sals->nelts = 1; | |
c906108c SS |
5000 | } |
5001 | else | |
5002 | error ("No default breakpoint address now."); | |
5003 | } | |
5004 | else | |
5005 | { | |
c906108c | 5006 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5007 | current_source_symtab (which is decode_line_1's default). This |
5008 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5009 | leaving default_breakpoint_* alone. |
5010 | ObjC: However, don't match an Objective-C method name which | |
5011 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5012 | |
c214a6fd | 5013 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5014 | |
c906108c | 5015 | if (default_breakpoint_valid |
0378c332 | 5016 | && (!cursal.symtab |
1aeae86e AF |
5017 | || ((strchr ("+-", (*address)[0]) != NULL) |
5018 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5019 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5020 | default_breakpoint_line, addr_string, |
5021 | not_found_ptr); | |
c906108c | 5022 | else |
0101ce28 JJ |
5023 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5024 | addr_string, not_found_ptr); | |
c906108c | 5025 | } |
c3f6f71d JM |
5026 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5027 | if (sals->nelts > 0 && *addr_string == NULL) | |
5028 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5029 | if (addr_start != (*address)) | |
c906108c | 5030 | { |
c3f6f71d JM |
5031 | int i; |
5032 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5033 | { |
c3f6f71d JM |
5034 | /* Add the string if not present. */ |
5035 | if ((*addr_string)[i] == NULL) | |
5036 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5037 | } |
5038 | } | |
c3f6f71d | 5039 | } |
c906108c | 5040 | |
c906108c | 5041 | |
c3f6f71d JM |
5042 | /* Convert each SAL into a real PC. Verify that the PC can be |
5043 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5044 | |
b9362cc7 | 5045 | static void |
c3f6f71d JM |
5046 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5047 | char *address) | |
5048 | { | |
5049 | int i; | |
5050 | for (i = 0; i < sals->nelts; i++) | |
5051 | { | |
5052 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
5053 | |
5054 | /* It's possible for the PC to be nonzero, but still an illegal | |
5055 | value on some targets. | |
5056 | ||
5057 | For example, on HP-UX if you start gdb, and before running the | |
5058 | inferior you try to set a breakpoint on a shared library function | |
5059 | "foo" where the inferior doesn't call "foo" directly but does | |
5060 | pass its address to another function call, then we do find a | |
5061 | minimal symbol for the "foo", but it's address is invalid. | |
5062 | (Appears to be an index into a table that the loader sets up | |
5063 | when the inferior is run.) | |
5064 | ||
5065 | Give the target a chance to bless sals.sals[i].pc before we | |
5066 | try to make a breakpoint for it. */ | |
45b75230 AC |
5067 | #ifdef DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE |
5068 | if (DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) | |
c5aa993b | 5069 | { |
c3f6f71d JM |
5070 | if (address == NULL) |
5071 | error ("Cannot break without a running program."); | |
5072 | else | |
5073 | error ("Cannot break on %s without a running program.", | |
5074 | address); | |
c5aa993b | 5075 | } |
45b75230 | 5076 | #endif |
c3f6f71d JM |
5077 | } |
5078 | } | |
5079 | ||
0101ce28 JJ |
5080 | static int |
5081 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) | |
5082 | { | |
5083 | struct captured_parse_breakpoint_args *args = data; | |
5084 | ||
5085 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5086 | args->not_found_ptr); | |
5087 | ||
5088 | return GDB_RC_OK; | |
5089 | } | |
5090 | ||
c3f6f71d JM |
5091 | /* Set a breakpoint according to ARG (function, linenum or *address) |
5092 | flag: first bit : 0 non-temporary, 1 temporary. | |
0101ce28 | 5093 | second bit : 0 normal breakpoint, 1 hardware breakpoint. |
c5aa993b | 5094 | |
0101ce28 JJ |
5095 | PENDING_BP is non-NULL when this function is being called to resolve |
5096 | a pending breakpoint. */ | |
5097 | ||
5098 | static int | |
5099 | break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp) | |
c3f6f71d JM |
5100 | { |
5101 | int tempflag, hardwareflag; | |
5102 | struct symtabs_and_lines sals; | |
52f0bd74 | 5103 | struct expression **cond = 0; |
0101ce28 | 5104 | struct symtab_and_line pending_sal; |
c3f6f71d | 5105 | char **cond_string = (char **) NULL; |
0101ce28 JJ |
5106 | char *copy_arg; |
5107 | char *err_msg; | |
c3f6f71d JM |
5108 | char *addr_start = arg; |
5109 | char **addr_string; | |
5110 | struct cleanup *old_chain; | |
5111 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 JJ |
5112 | struct captured_parse_breakpoint_args parse_args; |
5113 | int i, rc; | |
5114 | int pending = 0; | |
c3f6f71d JM |
5115 | int thread = -1; |
5116 | int ignore_count = 0; | |
0101ce28 | 5117 | int not_found = 0; |
c3f6f71d JM |
5118 | |
5119 | hardwareflag = flag & BP_HARDWAREFLAG; | |
5120 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 5121 | |
c3f6f71d JM |
5122 | sals.sals = NULL; |
5123 | sals.nelts = 0; | |
5124 | addr_string = NULL; | |
c3f6f71d | 5125 | |
0101ce28 JJ |
5126 | parse_args.arg_p = &arg; |
5127 | parse_args.sals_p = &sals; | |
5128 | parse_args.addr_string_p = &addr_string; | |
5129 | parse_args.not_found_ptr = ¬_found; | |
5130 | ||
5131 | rc = catch_exceptions_with_msg (uiout, do_captured_parse_breakpoint, | |
5132 | &parse_args, NULL, &err_msg, | |
5133 | RETURN_MASK_ALL); | |
5134 | ||
5135 | /* If caller is interested in rc value from parse, set value. */ | |
5136 | ||
5137 | if (rc != GDB_RC_OK) | |
5138 | { | |
5139 | /* Check for file or function not found. */ | |
5140 | if (not_found) | |
5141 | { | |
5142 | /* If called to resolve pending breakpoint, just return error code. */ | |
5143 | if (pending_bp) | |
5144 | return rc; | |
5145 | ||
5146 | error_output_message (NULL, err_msg); | |
5147 | xfree (err_msg); | |
fa8d40ab JJ |
5148 | |
5149 | /* If pending breakpoint support is turned off, throw error. */ | |
5150 | ||
5151 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
5152 | throw_exception (RETURN_ERROR); | |
5153 | ||
5154 | /* If pending breakpoint support is auto query and the user selects | |
5155 | no, then simply return the error code. */ | |
5156 | if (pending_break_support == AUTO_BOOLEAN_AUTO && | |
5157 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
0101ce28 | 5158 | return rc; |
fa8d40ab JJ |
5159 | |
5160 | /* At this point, either the user was queried about setting a | |
5161 | pending breakpoint and selected yes, or pending breakpoint | |
5162 | behavior is on and thus a pending breakpoint is defaulted | |
5163 | on behalf of the user. */ | |
0101ce28 JJ |
5164 | copy_arg = xstrdup (addr_start); |
5165 | addr_string = ©_arg; | |
5166 | sals.nelts = 1; | |
5167 | sals.sals = &pending_sal; | |
5168 | pending_sal.pc = 0; | |
5169 | pending = 1; | |
5170 | } | |
5171 | else | |
5172 | return rc; | |
5173 | } | |
5174 | else if (!sals.nelts) | |
5175 | return GDB_RC_FAIL; | |
c3f6f71d JM |
5176 | |
5177 | /* Create a chain of things that always need to be cleaned up. */ | |
5178 | old_chain = make_cleanup (null_cleanup, 0); | |
5179 | ||
0101ce28 JJ |
5180 | if (!pending) |
5181 | { | |
5182 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5183 | make_cleanup (xfree, sals.sals); | |
5184 | ||
5185 | /* Cleanup the addr_string array but not its contents. */ | |
5186 | make_cleanup (xfree, addr_string); | |
5187 | } | |
c3f6f71d JM |
5188 | |
5189 | /* Allocate space for all the cond expressions. */ | |
5190 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5191 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5192 | |
5193 | /* Allocate space for all the cond strings. */ | |
5194 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5195 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5196 | |
5197 | /* ----------------------------- SNIP ----------------------------- | |
5198 | Anything added to the cleanup chain beyond this point is assumed | |
5199 | to be part of a breakpoint. If the breakpoint create succeeds | |
5200 | then the memory is not reclaimed. */ | |
5201 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5202 | ||
5203 | /* Mark the contents of the addr_string for cleanup. These go on | |
5204 | the breakpoint_chain and only occure if the breakpoint create | |
5205 | fails. */ | |
5206 | for (i = 0; i < sals.nelts; i++) | |
5207 | { | |
5208 | if (addr_string[i] != NULL) | |
b8c9b27d | 5209 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5210 | } |
5211 | ||
5212 | /* Resolve all line numbers to PC's and verify that the addresses | |
5213 | are ok for the target. */ | |
0101ce28 JJ |
5214 | if (!pending) |
5215 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5216 | |
5217 | /* Verify that condition can be parsed, before setting any | |
5218 | breakpoints. Allocate a separate condition expression for each | |
5219 | breakpoint. */ | |
5220 | thread = -1; /* No specific thread yet */ | |
0101ce28 | 5221 | if (!pending) |
c3f6f71d | 5222 | { |
0101ce28 | 5223 | for (i = 0; i < sals.nelts; i++) |
c906108c | 5224 | { |
0101ce28 JJ |
5225 | char *tok = arg; |
5226 | while (tok && *tok) | |
c906108c | 5227 | { |
0101ce28 JJ |
5228 | char *end_tok; |
5229 | int toklen; | |
5230 | char *cond_start = NULL; | |
5231 | char *cond_end = NULL; | |
5232 | while (*tok == ' ' || *tok == '\t') | |
5233 | tok++; | |
5234 | ||
5235 | end_tok = tok; | |
5236 | ||
5237 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5238 | end_tok++; | |
5239 | ||
5240 | toklen = end_tok - tok; | |
5241 | ||
5242 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5243 | { | |
5244 | tok = cond_start = end_tok + 1; | |
5245 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), | |
5246 | 0); | |
5247 | make_cleanup (xfree, cond[i]); | |
5248 | cond_end = tok; | |
5249 | cond_string[i] = savestring (cond_start, | |
5250 | cond_end - cond_start); | |
5251 | make_cleanup (xfree, cond_string[i]); | |
5252 | } | |
5253 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5254 | { | |
5255 | char *tmptok; | |
5256 | ||
5257 | tok = end_tok + 1; | |
5258 | tmptok = tok; | |
5259 | thread = strtol (tok, &tok, 0); | |
5260 | if (tok == tmptok) | |
5261 | error ("Junk after thread keyword."); | |
5262 | if (!valid_thread_id (thread)) | |
5263 | error ("Unknown thread %d\n", thread); | |
5264 | } | |
5265 | else | |
5266 | error ("Junk at end of arguments."); | |
c906108c | 5267 | } |
c906108c | 5268 | } |
0101ce28 JJ |
5269 | create_breakpoints (sals, addr_string, cond, cond_string, |
5270 | hardwareflag ? bp_hardware_breakpoint | |
5271 | : bp_breakpoint, | |
5272 | tempflag ? disp_del : disp_donttouch, | |
5273 | thread, ignore_count, from_tty, | |
5274 | pending_bp); | |
c906108c | 5275 | } |
0101ce28 JJ |
5276 | else |
5277 | { | |
5278 | struct symtab_and_line sal; | |
5279 | struct breakpoint *b; | |
5280 | ||
5281 | sal.symtab = NULL; | |
5282 | sal.pc = 0; | |
5283 | ||
5284 | make_cleanup (xfree, copy_arg); | |
5285 | ||
5286 | b = set_raw_breakpoint (sal, hardwareflag ? bp_hardware_breakpoint | |
5287 | : bp_breakpoint); | |
5288 | set_breakpoint_count (breakpoint_count + 1); | |
5289 | b->number = breakpoint_count; | |
5290 | b->cond = *cond; | |
5291 | b->thread = thread; | |
5292 | b->addr_string = *addr_string; | |
5293 | b->cond_string = *cond_string; | |
5294 | b->ignore_count = ignore_count; | |
5295 | b->pending = 1; | |
5296 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
5297 | b->from_tty = from_tty; | |
5298 | b->flag = flag; | |
5299 | mention (b); | |
5300 | } | |
5301 | ||
c3f6f71d JM |
5302 | if (sals.nelts > 1) |
5303 | { | |
5304 | warning ("Multiple breakpoints were set."); | |
5305 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5306 | } |
c3f6f71d JM |
5307 | /* That's it. Discard the cleanups for data inserted into the |
5308 | breakpoint. */ | |
5309 | discard_cleanups (breakpoint_chain); | |
5310 | /* But cleanup everything else. */ | |
5311 | do_cleanups (old_chain); | |
0101ce28 JJ |
5312 | |
5313 | return GDB_RC_OK; | |
c3f6f71d | 5314 | } |
c906108c | 5315 | |
c3f6f71d JM |
5316 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5317 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5318 | |
c3f6f71d JM |
5319 | struct captured_breakpoint_args |
5320 | { | |
5321 | char *address; | |
5322 | char *condition; | |
5323 | int hardwareflag; | |
5324 | int tempflag; | |
5325 | int thread; | |
5326 | int ignore_count; | |
5327 | }; | |
5328 | ||
5329 | static int | |
5330 | do_captured_breakpoint (void *data) | |
5331 | { | |
5332 | struct captured_breakpoint_args *args = data; | |
5333 | struct symtabs_and_lines sals; | |
52f0bd74 | 5334 | struct expression **cond; |
c3f6f71d JM |
5335 | struct cleanup *old_chain; |
5336 | struct cleanup *breakpoint_chain = NULL; | |
5337 | int i; | |
5338 | char **addr_string; | |
5339 | char **cond_string; | |
5340 | ||
5341 | char *address_end; | |
5342 | ||
5343 | /* Parse the source and lines spec. Delay check that the expression | |
5344 | didn't contain trailing garbage until after cleanups are in | |
5345 | place. */ | |
5346 | sals.sals = NULL; | |
5347 | sals.nelts = 0; | |
5348 | address_end = args->address; | |
5349 | addr_string = NULL; | |
0101ce28 | 5350 | parse_breakpoint_sals (&address_end, &sals, &addr_string, 0); |
c3f6f71d JM |
5351 | |
5352 | if (!sals.nelts) | |
5353 | return GDB_RC_NONE; | |
5354 | ||
5355 | /* Create a chain of things at always need to be cleaned up. */ | |
5356 | old_chain = make_cleanup (null_cleanup, 0); | |
5357 | ||
5358 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5359 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5360 | |
5361 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5362 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5363 | |
5364 | /* Allocate space for all the cond expressions. */ | |
5365 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5366 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5367 | |
5368 | /* Allocate space for all the cond strings. */ | |
5369 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5370 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5371 | |
5372 | /* ----------------------------- SNIP ----------------------------- | |
5373 | Anything added to the cleanup chain beyond this point is assumed | |
5374 | to be part of a breakpoint. If the breakpoint create goes | |
5375 | through then that memory is not cleaned up. */ | |
5376 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5377 | ||
5378 | /* Mark the contents of the addr_string for cleanup. These go on | |
5379 | the breakpoint_chain and only occure if the breakpoint create | |
5380 | fails. */ | |
c906108c SS |
5381 | for (i = 0; i < sals.nelts; i++) |
5382 | { | |
c3f6f71d | 5383 | if (addr_string[i] != NULL) |
b8c9b27d | 5384 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5385 | } |
5386 | ||
c3f6f71d JM |
5387 | /* Wait until now before checking for garbage at the end of the |
5388 | address. That way cleanups can take care of freeing any | |
5389 | memory. */ | |
5390 | if (*address_end != '\0') | |
5391 | error ("Garbage %s following breakpoint address", address_end); | |
5392 | ||
5393 | /* Resolve all line numbers to PC's. */ | |
5394 | breakpoint_sals_to_pc (&sals, args->address); | |
5395 | ||
5396 | /* Verify that conditions can be parsed, before setting any | |
5397 | breakpoints. */ | |
5398 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5399 | { |
c3f6f71d JM |
5400 | if (args->condition != NULL) |
5401 | { | |
5402 | char *tok = args->condition; | |
5403 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5404 | if (*tok != '\0') | |
5405 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 5406 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5407 | cond_string[i] = xstrdup (args->condition); |
5408 | } | |
c906108c | 5409 | } |
c3f6f71d JM |
5410 | |
5411 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5412 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5413 | args->tempflag ? disp_del : disp_donttouch, |
0101ce28 JJ |
5414 | args->thread, args->ignore_count, 0/*from-tty*/, |
5415 | NULL/*pending_bp*/); | |
c3f6f71d JM |
5416 | |
5417 | /* That's it. Discard the cleanups for data inserted into the | |
5418 | breakpoint. */ | |
5419 | discard_cleanups (breakpoint_chain); | |
5420 | /* But cleanup everything else. */ | |
c906108c | 5421 | do_cleanups (old_chain); |
c3f6f71d | 5422 | return GDB_RC_OK; |
c906108c SS |
5423 | } |
5424 | ||
c3f6f71d JM |
5425 | enum gdb_rc |
5426 | gdb_breakpoint (char *address, char *condition, | |
5427 | int hardwareflag, int tempflag, | |
5428 | int thread, int ignore_count) | |
5429 | { | |
5430 | struct captured_breakpoint_args args; | |
5431 | args.address = address; | |
5432 | args.condition = condition; | |
5433 | args.hardwareflag = hardwareflag; | |
5434 | args.tempflag = tempflag; | |
5435 | args.thread = thread; | |
5436 | args.ignore_count = ignore_count; | |
5437 | return catch_errors (do_captured_breakpoint, &args, | |
5438 | NULL, RETURN_MASK_ALL); | |
5439 | } | |
5440 | ||
5441 | ||
c906108c SS |
5442 | /* Helper function for break_command_1 and disassemble_command. */ |
5443 | ||
5444 | void | |
fba45db2 | 5445 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5446 | { |
5447 | CORE_ADDR pc; | |
5448 | ||
5449 | if (sal->pc == 0 && sal->symtab != NULL) | |
5450 | { | |
5451 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5452 | error ("No line %d in file \"%s\".", | |
5453 | sal->line, sal->symtab->filename); | |
5454 | sal->pc = pc; | |
5455 | } | |
5456 | ||
5457 | if (sal->section == 0 && sal->symtab != NULL) | |
5458 | { | |
5459 | struct blockvector *bv; | |
c5aa993b JM |
5460 | struct block *b; |
5461 | struct symbol *sym; | |
5462 | int index; | |
c906108c | 5463 | |
c5aa993b | 5464 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5465 | if (bv != NULL) |
5466 | { | |
c5aa993b | 5467 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5468 | sym = block_function (b); |
5469 | if (sym != NULL) | |
5470 | { | |
5471 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5472 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5473 | } | |
5474 | else | |
5475 | { | |
5476 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5477 | have to look harder. This case can be executed if we have |
5478 | line numbers but no functions (as can happen in assembly | |
5479 | source). */ | |
c906108c | 5480 | |
c5aa993b | 5481 | struct minimal_symbol *msym; |
c906108c SS |
5482 | |
5483 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5484 | if (msym) | |
5485 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5486 | } | |
5487 | } | |
5488 | } | |
5489 | } | |
5490 | ||
5491 | void | |
fba45db2 | 5492 | break_command (char *arg, int from_tty) |
c906108c | 5493 | { |
0101ce28 | 5494 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5495 | } |
5496 | ||
c906108c | 5497 | void |
fba45db2 | 5498 | tbreak_command (char *arg, int from_tty) |
c906108c | 5499 | { |
0101ce28 | 5500 | break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL); |
c906108c SS |
5501 | } |
5502 | ||
c906108c | 5503 | static void |
fba45db2 | 5504 | hbreak_command (char *arg, int from_tty) |
c906108c | 5505 | { |
0101ce28 | 5506 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty, NULL); |
c906108c SS |
5507 | } |
5508 | ||
5509 | static void | |
fba45db2 | 5510 | thbreak_command (char *arg, int from_tty) |
c906108c | 5511 | { |
0101ce28 | 5512 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty, NULL); |
c906108c SS |
5513 | } |
5514 | ||
5515 | static void | |
fba45db2 | 5516 | stop_command (char *arg, int from_tty) |
c906108c SS |
5517 | { |
5518 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5519 | Usage: stop in <function | address>\n\ | |
5520 | stop at <line>\n"); | |
5521 | } | |
5522 | ||
5523 | static void | |
fba45db2 | 5524 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5525 | { |
5526 | int badInput = 0; | |
5527 | ||
c5aa993b | 5528 | if (arg == (char *) NULL) |
c906108c SS |
5529 | badInput = 1; |
5530 | else if (*arg != '*') | |
5531 | { | |
5532 | char *argptr = arg; | |
5533 | int hasColon = 0; | |
5534 | ||
53a5351d JM |
5535 | /* look for a ':'. If this is a line number specification, then |
5536 | say it is bad, otherwise, it should be an address or | |
5537 | function/method name */ | |
c906108c | 5538 | while (*argptr && !hasColon) |
c5aa993b JM |
5539 | { |
5540 | hasColon = (*argptr == ':'); | |
5541 | argptr++; | |
5542 | } | |
c906108c SS |
5543 | |
5544 | if (hasColon) | |
c5aa993b | 5545 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5546 | else |
c5aa993b | 5547 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5548 | } |
5549 | ||
5550 | if (badInput) | |
c5aa993b | 5551 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c | 5552 | else |
0101ce28 | 5553 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5554 | } |
5555 | ||
5556 | static void | |
fba45db2 | 5557 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5558 | { |
5559 | int badInput = 0; | |
5560 | ||
c5aa993b | 5561 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5562 | badInput = 1; |
5563 | else | |
5564 | { | |
5565 | char *argptr = arg; | |
5566 | int hasColon = 0; | |
5567 | ||
5568 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5569 | it is probably a line number. */ |
c906108c | 5570 | while (*argptr && !hasColon) |
c5aa993b JM |
5571 | { |
5572 | hasColon = (*argptr == ':'); | |
5573 | argptr++; | |
5574 | } | |
c906108c SS |
5575 | |
5576 | if (hasColon) | |
c5aa993b | 5577 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5578 | else |
c5aa993b | 5579 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5580 | } |
5581 | ||
5582 | if (badInput) | |
c5aa993b | 5583 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c | 5584 | else |
0101ce28 | 5585 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5586 | } |
5587 | ||
53a5351d JM |
5588 | /* accessflag: hw_write: watch write, |
5589 | hw_read: watch read, | |
5590 | hw_access: watch access (read or write) */ | |
c906108c | 5591 | static void |
fba45db2 | 5592 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5593 | { |
5594 | struct breakpoint *b; | |
5595 | struct symtab_and_line sal; | |
5596 | struct expression *exp; | |
5597 | struct block *exp_valid_block; | |
5598 | struct value *val, *mark; | |
5599 | struct frame_info *frame; | |
5600 | struct frame_info *prev_frame = NULL; | |
5601 | char *exp_start = NULL; | |
5602 | char *exp_end = NULL; | |
5603 | char *tok, *end_tok; | |
5604 | int toklen; | |
5605 | char *cond_start = NULL; | |
5606 | char *cond_end = NULL; | |
5607 | struct expression *cond = NULL; | |
5608 | int i, other_type_used, target_resources_ok = 0; | |
5609 | enum bptype bp_type; | |
5610 | int mem_cnt = 0; | |
5611 | ||
fe39c653 | 5612 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5613 | |
c906108c SS |
5614 | /* Parse arguments. */ |
5615 | innermost_block = NULL; | |
5616 | exp_start = arg; | |
5617 | exp = parse_exp_1 (&arg, 0, 0); | |
5618 | exp_end = arg; | |
5619 | exp_valid_block = innermost_block; | |
5620 | mark = value_mark (); | |
5621 | val = evaluate_expression (exp); | |
5622 | release_value (val); | |
5623 | if (VALUE_LAZY (val)) | |
5624 | value_fetch_lazy (val); | |
5625 | ||
5626 | tok = arg; | |
5627 | while (*tok == ' ' || *tok == '\t') | |
5628 | tok++; | |
5629 | end_tok = tok; | |
5630 | ||
5631 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5632 | end_tok++; | |
5633 | ||
5634 | toklen = end_tok - tok; | |
5635 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5636 | { | |
5637 | tok = cond_start = end_tok + 1; | |
5638 | cond = parse_exp_1 (&tok, 0, 0); | |
5639 | cond_end = tok; | |
5640 | } | |
5641 | if (*tok) | |
c5aa993b | 5642 | error ("Junk at end of command."); |
c906108c | 5643 | |
53a5351d | 5644 | if (accessflag == hw_read) |
c5aa993b | 5645 | bp_type = bp_read_watchpoint; |
53a5351d | 5646 | else if (accessflag == hw_access) |
c5aa993b JM |
5647 | bp_type = bp_access_watchpoint; |
5648 | else | |
5649 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5650 | |
5651 | mem_cnt = can_use_hardware_watchpoint (val); | |
5652 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5653 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5654 | if (mem_cnt != 0) |
5655 | { | |
5656 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5657 | target_resources_ok = |
5658 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5659 | other_type_used); | |
c5aa993b | 5660 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5661 | error ("Target does not support this type of hardware watchpoint."); |
5662 | ||
c5aa993b | 5663 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5664 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5665 | } |
c906108c SS |
5666 | |
5667 | #if defined(HPUXHPPA) | |
c5aa993b | 5668 | /* On HP-UX if you set a h/w |
c906108c SS |
5669 | watchpoint before the "run" command, the inferior dies with a e.g., |
5670 | SIGILL once you start it. I initially believed this was due to a | |
5671 | bad interaction between page protection traps and the initial | |
5672 | startup sequence by the dynamic linker. | |
5673 | ||
5674 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5675 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5676 | yet, which forced slow watches before a "run" or "attach", and it |
5677 | still fails somewhere in the startup code. | |
5678 | ||
5679 | Until I figure out what's happening, I'm disallowing watches altogether | |
5680 | before the "run" or "attach" command. We'll tell the user they must | |
5681 | set watches after getting the program started. */ | |
c5aa993b | 5682 | if (!target_has_execution) |
c906108c SS |
5683 | { |
5684 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5685 | return; | |
5686 | } | |
5687 | #endif /* HPUXHPPA */ | |
c5aa993b | 5688 | |
4d28f7a8 KB |
5689 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5690 | watchpoint could not be set. */ | |
5691 | if (!mem_cnt || target_resources_ok <= 0) | |
5692 | bp_type = bp_watchpoint; | |
5693 | ||
c906108c | 5694 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5695 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5696 | set_breakpoint_count (breakpoint_count + 1); |
5697 | b->number = breakpoint_count; | |
b5de0fa7 | 5698 | b->disposition = disp_donttouch; |
c906108c SS |
5699 | b->exp = exp; |
5700 | b->exp_valid_block = exp_valid_block; | |
5701 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5702 | b->val = val; | |
5703 | b->cond = cond; | |
5704 | if (cond_start) | |
5705 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5706 | else | |
5707 | b->cond_string = 0; | |
c5aa993b | 5708 | |
c906108c SS |
5709 | frame = block_innermost_frame (exp_valid_block); |
5710 | if (frame) | |
5711 | { | |
5712 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5713 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5714 | } |
5715 | else | |
101dcfbe AC |
5716 | { |
5717 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5718 | } | |
c906108c | 5719 | |
c906108c SS |
5720 | /* If the expression is "local", then set up a "watchpoint scope" |
5721 | breakpoint at the point where we've left the scope of the watchpoint | |
5722 | expression. */ | |
5723 | if (innermost_block) | |
5724 | { | |
5725 | if (prev_frame) | |
5726 | { | |
5727 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5728 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5729 | bp_watchpoint_scope); | |
c906108c | 5730 | |
b5de0fa7 | 5731 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5732 | |
5733 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5734 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5735 | |
5736 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5737 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5738 | |
5739 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5740 | scope_breakpoint->loc->requested_address |
5741 | = get_frame_pc (prev_frame); | |
5742 | scope_breakpoint->loc->address | |
88f7da05 KB |
5743 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, |
5744 | scope_breakpoint->type); | |
c906108c SS |
5745 | |
5746 | /* The scope breakpoint is related to the watchpoint. We | |
5747 | will need to act on them together. */ | |
5748 | b->related_breakpoint = scope_breakpoint; | |
5749 | } | |
5750 | } | |
5751 | value_free_to_mark (mark); | |
5752 | mention (b); | |
5753 | } | |
5754 | ||
5755 | /* Return count of locations need to be watched and can be handled | |
5756 | in hardware. If the watchpoint can not be handled | |
5757 | in hardware return zero. */ | |
5758 | ||
53a5351d JM |
5759 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) |
5760 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5761 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5762 | #endif |
5763 | ||
5764 | static int | |
fba45db2 | 5765 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5766 | { |
5767 | int found_memory_cnt = 0; | |
2e70b7b9 | 5768 | struct value *head = v; |
c906108c SS |
5769 | |
5770 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5771 | if (!can_use_hw_watchpoints) |
c906108c | 5772 | return 0; |
c5aa993b | 5773 | |
5c44784c JM |
5774 | /* Make sure that the value of the expression depends only upon |
5775 | memory contents, and values computed from them within GDB. If we | |
5776 | find any register references or function calls, we can't use a | |
5777 | hardware watchpoint. | |
5778 | ||
5779 | The idea here is that evaluating an expression generates a series | |
5780 | of values, one holding the value of every subexpression. (The | |
5781 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5782 | a*b+c.) GDB's values hold almost enough information to establish | |
5783 | the criteria given above --- they identify memory lvalues, | |
5784 | register lvalues, computed values, etcetera. So we can evaluate | |
5785 | the expression, and then scan the chain of values that leaves | |
5786 | behind to decide whether we can detect any possible change to the | |
5787 | expression's final value using only hardware watchpoints. | |
5788 | ||
5789 | However, I don't think that the values returned by inferior | |
5790 | function calls are special in any way. So this function may not | |
5791 | notice that an expression involving an inferior function call | |
5792 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5793 | for (; v; v = v->next) |
c906108c | 5794 | { |
5c44784c | 5795 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5796 | { |
5c44784c JM |
5797 | if (VALUE_LAZY (v)) |
5798 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5799 | we either just used its address (e.g., `a' in `a.b') or | |
5800 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5801 | ; | |
53a5351d | 5802 | else |
5c44784c JM |
5803 | { |
5804 | /* Ahh, memory we actually used! Check if we can cover | |
5805 | it with hardware watchpoints. */ | |
df407dfe | 5806 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
5807 | |
5808 | /* We only watch structs and arrays if user asked for it | |
5809 | explicitly, never if they just happen to appear in a | |
5810 | middle of some value chain. */ | |
5811 | if (v == head | |
5812 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5813 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5814 | { | |
df407dfe AC |
5815 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
5816 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
5817 | |
5818 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5819 | return 0; | |
5820 | else | |
5821 | found_memory_cnt++; | |
5822 | } | |
5c44784c | 5823 | } |
c5aa993b | 5824 | } |
c906108c | 5825 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5826 | return 0; /* ??? What does this represent? */ |
5827 | else if (v->lval == lval_register) | |
5828 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5829 | } |
5830 | ||
5831 | /* The expression itself looks suitable for using a hardware | |
5832 | watchpoint, but give the target machine a chance to reject it. */ | |
5833 | return found_memory_cnt; | |
5834 | } | |
5835 | ||
8b93c638 | 5836 | void |
fba45db2 | 5837 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5838 | { |
5839 | watch_command (arg, from_tty); | |
5840 | } | |
8926118c | 5841 | |
c5aa993b | 5842 | static void |
fba45db2 | 5843 | watch_command (char *arg, int from_tty) |
c906108c | 5844 | { |
53a5351d | 5845 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5846 | } |
5847 | ||
8b93c638 | 5848 | void |
fba45db2 | 5849 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5850 | { |
5851 | rwatch_command (arg, from_tty); | |
5852 | } | |
8926118c | 5853 | |
c5aa993b | 5854 | static void |
fba45db2 | 5855 | rwatch_command (char *arg, int from_tty) |
c906108c | 5856 | { |
53a5351d | 5857 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5858 | } |
5859 | ||
8b93c638 | 5860 | void |
fba45db2 | 5861 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5862 | { |
5863 | awatch_command (arg, from_tty); | |
5864 | } | |
8926118c | 5865 | |
c5aa993b | 5866 | static void |
fba45db2 | 5867 | awatch_command (char *arg, int from_tty) |
c906108c | 5868 | { |
53a5351d | 5869 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5870 | } |
c906108c | 5871 | \f |
c5aa993b | 5872 | |
43ff13b4 | 5873 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5874 | because it uses the mechanisms of breakpoints. */ |
5875 | ||
43ff13b4 JM |
5876 | /* This function is called by fetch_inferior_event via the |
5877 | cmd_continuation pointer, to complete the until command. It takes | |
5878 | care of cleaning up the temporary breakpoints set up by the until | |
5879 | command. */ | |
c2c6d25f JM |
5880 | static void |
5881 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5882 | { |
0d06e24b JM |
5883 | struct cleanup *cleanups; |
5884 | ||
57e687d9 | 5885 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5886 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5887 | } |
5888 | ||
c906108c | 5889 | void |
ae66c1fc | 5890 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
5891 | { |
5892 | struct symtabs_and_lines sals; | |
5893 | struct symtab_and_line sal; | |
6e7f8b9c | 5894 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
5895 | struct breakpoint *breakpoint; |
5896 | struct cleanup *old_chain; | |
0d06e24b JM |
5897 | struct continuation_arg *arg1; |
5898 | ||
c906108c SS |
5899 | |
5900 | clear_proceed_status (); | |
5901 | ||
5902 | /* Set a breakpoint where the user wants it and at return from | |
5903 | this function */ | |
c5aa993b | 5904 | |
c906108c SS |
5905 | if (default_breakpoint_valid) |
5906 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 5907 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 5908 | else |
53a5351d | 5909 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 5910 | 0, (char ***) NULL, NULL); |
c5aa993b | 5911 | |
c906108c SS |
5912 | if (sals.nelts != 1) |
5913 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5914 | |
c906108c | 5915 | sal = sals.sals[0]; |
b8c9b27d | 5916 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 5917 | |
c906108c SS |
5918 | if (*arg) |
5919 | error ("Junk at end of arguments."); | |
c5aa993b | 5920 | |
c906108c | 5921 | resolve_sal_pc (&sal); |
c5aa993b | 5922 | |
ae66c1fc EZ |
5923 | if (anywhere) |
5924 | /* If the user told us to continue until a specified location, | |
5925 | we don't specify a frame at which we need to stop. */ | |
5926 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
5927 | else | |
5928 | /* Otherwise, specify the current frame, because we want to stop only | |
5929 | at the very same frame. */ | |
5930 | breakpoint = set_momentary_breakpoint (sal, | |
5931 | get_frame_id (deprecated_selected_frame), | |
5932 | bp_until); | |
c5aa993b | 5933 | |
362646f5 | 5934 | if (!target_can_async_p ()) |
4d6140d9 | 5935 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5936 | else |
4d6140d9 | 5937 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5938 | |
5939 | /* If we are running asynchronously, and the target supports async | |
5940 | execution, we are not waiting for the target to stop, in the call | |
5941 | tp proceed, below. This means that we cannot delete the | |
5942 | brekpoints until the target has actually stopped. The only place | |
5943 | where we get a chance to do that is in fetch_inferior_event, so | |
5944 | we must set things up for that. */ | |
5945 | ||
362646f5 | 5946 | if (target_can_async_p ()) |
43ff13b4 | 5947 | { |
0d06e24b JM |
5948 | /* In this case the arg for the continuation is just the point |
5949 | in the exec_cleanups chain from where to start doing | |
5950 | cleanups, because all the continuation does is the cleanups in | |
5951 | the exec_cleanup_chain. */ | |
5952 | arg1 = | |
5953 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5954 | arg1->next = NULL; |
5955 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5956 | |
5957 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5958 | } |
c906108c | 5959 | |
ae66c1fc EZ |
5960 | /* Keep within the current frame, or in frames called by the current |
5961 | one. */ | |
c906108c SS |
5962 | if (prev_frame) |
5963 | { | |
30f7db39 AC |
5964 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
5965 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
5966 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
5967 | bp_until); | |
362646f5 | 5968 | if (!target_can_async_p ()) |
4d6140d9 | 5969 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5970 | else |
4d6140d9 | 5971 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5972 | } |
c5aa993b | 5973 | |
c906108c | 5974 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5975 | /* Do the cleanups now, anly if we are not running asynchronously, |
5976 | of if we are, but the target is still synchronous. */ | |
362646f5 | 5977 | if (!target_can_async_p ()) |
c5aa993b | 5978 | do_cleanups (old_chain); |
c906108c | 5979 | } |
ae66c1fc | 5980 | |
c906108c | 5981 | static void |
fba45db2 | 5982 | ep_skip_leading_whitespace (char **s) |
c906108c | 5983 | { |
c5aa993b JM |
5984 | if ((s == NULL) || (*s == NULL)) |
5985 | return; | |
5986 | while (isspace (**s)) | |
5987 | *s += 1; | |
c906108c | 5988 | } |
c5aa993b | 5989 | |
c906108c SS |
5990 | /* This function examines a string, and attempts to find a token |
5991 | that might be an event name in the leading characters. If a | |
5992 | possible match is found, a pointer to the last character of | |
5993 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5994 | |
c906108c | 5995 | static char * |
fba45db2 | 5996 | ep_find_event_name_end (char *arg) |
c906108c | 5997 | { |
c5aa993b JM |
5998 | char *s = arg; |
5999 | char *event_name_end = NULL; | |
6000 | ||
c906108c SS |
6001 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6002 | if (arg == NULL) | |
6003 | return NULL; | |
c5aa993b | 6004 | |
c906108c | 6005 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6006 | Basically, we're looking for alphanumerics and underscores; |
6007 | anything else delimites the token. */ | |
c906108c SS |
6008 | while (*s != '\0') |
6009 | { | |
c5aa993b JM |
6010 | if (!isalnum (*s) && (*s != '_')) |
6011 | break; | |
c906108c SS |
6012 | event_name_end = s; |
6013 | s++; | |
6014 | } | |
c5aa993b | 6015 | |
c906108c SS |
6016 | return event_name_end; |
6017 | } | |
6018 | ||
c5aa993b | 6019 | |
c906108c SS |
6020 | /* This function attempts to parse an optional "if <cond>" clause |
6021 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6022 | |
c906108c SS |
6023 | Else, it returns a pointer to the condition string. (It does not |
6024 | attempt to evaluate the string against a particular block.) And, | |
6025 | it updates arg to point to the first character following the parsed | |
6026 | if clause in the arg string. */ | |
53a5351d | 6027 | |
c906108c | 6028 | static char * |
fba45db2 | 6029 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6030 | { |
c5aa993b JM |
6031 | char *cond_string; |
6032 | ||
6033 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6034 | return NULL; |
c5aa993b | 6035 | |
c906108c SS |
6036 | /* Skip the "if" keyword. */ |
6037 | (*arg) += 2; | |
c5aa993b | 6038 | |
c906108c SS |
6039 | /* Skip any extra leading whitespace, and record the start of the |
6040 | condition string. */ | |
6041 | ep_skip_leading_whitespace (arg); | |
6042 | cond_string = *arg; | |
c5aa993b | 6043 | |
c906108c SS |
6044 | /* Assume that the condition occupies the remainder of the arg string. */ |
6045 | (*arg) += strlen (cond_string); | |
c5aa993b | 6046 | |
c906108c SS |
6047 | return cond_string; |
6048 | } | |
c5aa993b | 6049 | |
c906108c SS |
6050 | /* This function attempts to parse an optional filename from the arg |
6051 | string. If one is not found, it returns NULL. | |
c5aa993b | 6052 | |
c906108c SS |
6053 | Else, it returns a pointer to the parsed filename. (This function |
6054 | makes no attempt to verify that a file of that name exists, or is | |
6055 | accessible.) And, it updates arg to point to the first character | |
6056 | following the parsed filename in the arg string. | |
c5aa993b | 6057 | |
c906108c SS |
6058 | Note that clients needing to preserve the returned filename for |
6059 | future access should copy it to their own buffers. */ | |
6060 | static char * | |
fba45db2 | 6061 | ep_parse_optional_filename (char **arg) |
c906108c | 6062 | { |
c5aa993b JM |
6063 | static char filename[1024]; |
6064 | char *arg_p = *arg; | |
6065 | int i; | |
6066 | char c; | |
6067 | ||
c906108c SS |
6068 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6069 | return NULL; | |
c5aa993b JM |
6070 | |
6071 | for (i = 0;; i++) | |
c906108c SS |
6072 | { |
6073 | c = *arg_p; | |
6074 | if (isspace (c)) | |
c5aa993b | 6075 | c = '\0'; |
c906108c SS |
6076 | filename[i] = c; |
6077 | if (c == '\0') | |
c5aa993b | 6078 | break; |
c906108c SS |
6079 | arg_p++; |
6080 | } | |
6081 | *arg = arg_p; | |
c5aa993b | 6082 | |
c906108c SS |
6083 | return filename; |
6084 | } | |
c5aa993b | 6085 | |
c906108c SS |
6086 | /* Commands to deal with catching events, such as signals, exceptions, |
6087 | process start/exit, etc. */ | |
c5aa993b JM |
6088 | |
6089 | typedef enum | |
6090 | { | |
6091 | catch_fork, catch_vfork | |
6092 | } | |
6093 | catch_fork_kind; | |
6094 | ||
c906108c | 6095 | static void |
fba45db2 KB |
6096 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6097 | int from_tty) | |
c906108c | 6098 | { |
c5aa993b JM |
6099 | char *cond_string = NULL; |
6100 | ||
c906108c | 6101 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6102 | |
c906108c | 6103 | /* The allowed syntax is: |
c5aa993b JM |
6104 | catch [v]fork |
6105 | catch [v]fork if <cond> | |
6106 | ||
c906108c SS |
6107 | First, check if there's an if clause. */ |
6108 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6109 | |
c906108c SS |
6110 | if ((*arg != '\0') && !isspace (*arg)) |
6111 | error ("Junk at end of arguments."); | |
c5aa993b | 6112 | |
c906108c SS |
6113 | /* If this target supports it, create a fork or vfork catchpoint |
6114 | and enable reporting of such events. */ | |
c5aa993b JM |
6115 | switch (fork_kind) |
6116 | { | |
6117 | case catch_fork: | |
c906108c SS |
6118 | create_fork_event_catchpoint (tempflag, cond_string); |
6119 | break; | |
c5aa993b | 6120 | case catch_vfork: |
c906108c SS |
6121 | create_vfork_event_catchpoint (tempflag, cond_string); |
6122 | break; | |
c5aa993b | 6123 | default: |
c906108c SS |
6124 | error ("unsupported or unknown fork kind; cannot catch it"); |
6125 | break; | |
c5aa993b | 6126 | } |
c906108c SS |
6127 | } |
6128 | ||
6129 | static void | |
fba45db2 | 6130 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6131 | { |
c5aa993b | 6132 | char *cond_string = NULL; |
c906108c SS |
6133 | |
6134 | ep_skip_leading_whitespace (&arg); | |
6135 | ||
6136 | /* The allowed syntax is: | |
c5aa993b JM |
6137 | catch exec |
6138 | catch exec if <cond> | |
c906108c SS |
6139 | |
6140 | First, check if there's an if clause. */ | |
6141 | cond_string = ep_parse_optional_if_clause (&arg); | |
6142 | ||
6143 | if ((*arg != '\0') && !isspace (*arg)) | |
6144 | error ("Junk at end of arguments."); | |
6145 | ||
6146 | /* If this target supports it, create an exec catchpoint | |
6147 | and enable reporting of such events. */ | |
6148 | create_exec_event_catchpoint (tempflag, cond_string); | |
6149 | } | |
c5aa993b | 6150 | |
c906108c | 6151 | static void |
fba45db2 | 6152 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6153 | { |
c5aa993b JM |
6154 | char *dll_pathname = NULL; |
6155 | char *cond_string = NULL; | |
6156 | ||
c906108c | 6157 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6158 | |
c906108c | 6159 | /* The allowed syntax is: |
c5aa993b JM |
6160 | catch load |
6161 | catch load if <cond> | |
6162 | catch load <filename> | |
6163 | catch load <filename> if <cond> | |
6164 | ||
c906108c SS |
6165 | The user is not allowed to specify the <filename> after an |
6166 | if clause. | |
c5aa993b | 6167 | |
c906108c | 6168 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6169 | |
c906108c SS |
6170 | First, check if there's an if clause. If so, then there |
6171 | cannot be a filename. */ | |
6172 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6173 | |
c906108c SS |
6174 | /* If there was an if clause, then there cannot be a filename. |
6175 | Else, there might be a filename and an if clause. */ | |
6176 | if (cond_string == NULL) | |
6177 | { | |
6178 | dll_pathname = ep_parse_optional_filename (&arg); | |
6179 | ep_skip_leading_whitespace (&arg); | |
6180 | cond_string = ep_parse_optional_if_clause (&arg); | |
6181 | } | |
c5aa993b | 6182 | |
c906108c SS |
6183 | if ((*arg != '\0') && !isspace (*arg)) |
6184 | error ("Junk at end of arguments."); | |
c5aa993b | 6185 | |
c906108c SS |
6186 | /* Create a load breakpoint that only triggers when a load of |
6187 | the specified dll (or any dll, if no pathname was specified) | |
6188 | occurs. */ | |
39f77062 | 6189 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6190 | dll_pathname, cond_string); |
c906108c | 6191 | } |
c5aa993b | 6192 | |
c906108c | 6193 | static void |
fba45db2 | 6194 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6195 | { |
c5aa993b JM |
6196 | char *dll_pathname = NULL; |
6197 | char *cond_string = NULL; | |
6198 | ||
c906108c | 6199 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6200 | |
c906108c | 6201 | /* The allowed syntax is: |
c5aa993b JM |
6202 | catch unload |
6203 | catch unload if <cond> | |
6204 | catch unload <filename> | |
6205 | catch unload <filename> if <cond> | |
6206 | ||
c906108c SS |
6207 | The user is not allowed to specify the <filename> after an |
6208 | if clause. | |
c5aa993b | 6209 | |
c906108c | 6210 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6211 | |
c906108c SS |
6212 | First, check if there's an if clause. If so, then there |
6213 | cannot be a filename. */ | |
6214 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6215 | |
c906108c SS |
6216 | /* If there was an if clause, then there cannot be a filename. |
6217 | Else, there might be a filename and an if clause. */ | |
6218 | if (cond_string == NULL) | |
6219 | { | |
6220 | dll_pathname = ep_parse_optional_filename (&arg); | |
6221 | ep_skip_leading_whitespace (&arg); | |
6222 | cond_string = ep_parse_optional_if_clause (&arg); | |
6223 | } | |
c5aa993b | 6224 | |
c906108c SS |
6225 | if ((*arg != '\0') && !isspace (*arg)) |
6226 | error ("Junk at end of arguments."); | |
c5aa993b | 6227 | |
c906108c SS |
6228 | /* Create an unload breakpoint that only triggers when an unload of |
6229 | the specified dll (or any dll, if no pathname was specified) | |
6230 | occurs. */ | |
39f77062 | 6231 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6232 | dll_pathname, cond_string); |
c906108c | 6233 | } |
c906108c SS |
6234 | |
6235 | /* Commands to deal with catching exceptions. */ | |
6236 | ||
6237 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6238 | exception event callback */ |
c906108c SS |
6239 | |
6240 | static void | |
fba45db2 KB |
6241 | create_exception_catchpoint (int tempflag, char *cond_string, |
6242 | enum exception_event_kind ex_event, | |
6243 | struct symtab_and_line *sal) | |
c906108c | 6244 | { |
c5aa993b | 6245 | struct breakpoint *b; |
c5aa993b | 6246 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6247 | enum bptype bptype; |
c906108c | 6248 | |
c5aa993b | 6249 | if (!sal) /* no exception support? */ |
c906108c SS |
6250 | return; |
6251 | ||
c906108c SS |
6252 | switch (ex_event) |
6253 | { | |
c5aa993b | 6254 | case EX_EVENT_THROW: |
4d28f7a8 | 6255 | bptype = bp_catch_throw; |
c5aa993b JM |
6256 | break; |
6257 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6258 | bptype = bp_catch_catch; |
c5aa993b JM |
6259 | break; |
6260 | default: /* error condition */ | |
c5aa993b | 6261 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6262 | } |
4d28f7a8 KB |
6263 | |
6264 | b = set_raw_breakpoint (*sal, bptype); | |
6265 | set_breakpoint_count (breakpoint_count + 1); | |
6266 | b->number = breakpoint_count; | |
6267 | b->cond = NULL; | |
6268 | b->cond_string = (cond_string == NULL) ? | |
6269 | NULL : savestring (cond_string, strlen (cond_string)); | |
6270 | b->thread = thread; | |
6271 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6272 | b->enable_state = bp_enabled; |
6273 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6274 | mention (b); |
6275 | } | |
6276 | ||
3086aeae DJ |
6277 | static enum print_stop_action |
6278 | print_exception_catchpoint (struct breakpoint *b) | |
6279 | { | |
6280 | annotate_catchpoint (b->number); | |
6281 | ||
6282 | if (strstr (b->addr_string, "throw") != NULL) | |
6283 | printf_filtered ("\nCatchpoint %d (exception thrown)\n", | |
6284 | b->number); | |
6285 | else | |
6286 | printf_filtered ("\nCatchpoint %d (exception caught)\n", | |
6287 | b->number); | |
6288 | ||
6289 | return PRINT_SRC_AND_LOC; | |
6290 | } | |
6291 | ||
6292 | static void | |
6293 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6294 | { | |
6295 | if (addressprint) | |
6296 | { | |
6297 | annotate_field (4); | |
5cab636d | 6298 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6299 | } |
6300 | annotate_field (5); | |
5cab636d | 6301 | *last_addr = b->loc->address; |
3086aeae DJ |
6302 | if (strstr (b->addr_string, "throw") != NULL) |
6303 | ui_out_field_string (uiout, "what", "exception throw"); | |
6304 | else | |
6305 | ui_out_field_string (uiout, "what", "exception catch"); | |
6306 | } | |
6307 | ||
6308 | static void | |
6309 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6310 | { | |
6311 | if (strstr (b->addr_string, "throw") != NULL) | |
6312 | printf_filtered ("Catchpoint %d (throw)", b->number); | |
6313 | else | |
6314 | printf_filtered ("Catchpoint %d (catch)", b->number); | |
6315 | } | |
6316 | ||
6317 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6318 | print_exception_catchpoint, | |
6319 | print_one_exception_catchpoint, | |
6320 | print_mention_exception_catchpoint | |
6321 | }; | |
6322 | ||
6323 | static int | |
6324 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6325 | enum exception_event_kind ex_event, int from_tty) | |
6326 | { | |
6327 | char *trigger_func_name, *nameptr; | |
6328 | struct symtabs_and_lines sals; | |
6329 | struct breakpoint *b; | |
6330 | ||
6331 | if (ex_event == EX_EVENT_CATCH) | |
6332 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6333 | else | |
6334 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6335 | ||
6336 | nameptr = trigger_func_name; | |
68219205 | 6337 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6338 | if (sals.nelts == 0) |
6339 | { | |
b59661bd | 6340 | xfree (trigger_func_name); |
3086aeae DJ |
6341 | return 0; |
6342 | } | |
6343 | ||
6344 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6345 | set_breakpoint_count (breakpoint_count + 1); | |
6346 | b->number = breakpoint_count; | |
6347 | b->cond = NULL; | |
6348 | b->cond_string = (cond_string == NULL) ? | |
6349 | NULL : savestring (cond_string, strlen (cond_string)); | |
6350 | b->thread = -1; | |
6351 | b->addr_string = trigger_func_name; | |
6352 | b->enable_state = bp_enabled; | |
6353 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6354 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6355 | ||
b59661bd | 6356 | xfree (sals.sals); |
3086aeae DJ |
6357 | mention (b); |
6358 | return 1; | |
6359 | } | |
6360 | ||
c5aa993b | 6361 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6362 | |
6363 | static void | |
fba45db2 KB |
6364 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6365 | int tempflag, int from_tty) | |
c906108c | 6366 | { |
c5aa993b JM |
6367 | char *cond_string = NULL; |
6368 | struct symtab_and_line *sal = NULL; | |
6369 | ||
c906108c | 6370 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6371 | |
c906108c SS |
6372 | cond_string = ep_parse_optional_if_clause (&arg); |
6373 | ||
6374 | if ((*arg != '\0') && !isspace (*arg)) | |
6375 | error ("Junk at end of arguments."); | |
6376 | ||
6377 | if ((ex_event != EX_EVENT_THROW) && | |
6378 | (ex_event != EX_EVENT_CATCH)) | |
6379 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6380 | ||
3086aeae DJ |
6381 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6382 | return; | |
6383 | ||
c906108c SS |
6384 | /* See if we can find a callback routine */ |
6385 | sal = target_enable_exception_callback (ex_event, 1); | |
6386 | ||
c5aa993b | 6387 | if (sal) |
c906108c SS |
6388 | { |
6389 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6390 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6391 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6392 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6393 | else |
53a5351d | 6394 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6395 | } |
c5aa993b | 6396 | |
69f567ae | 6397 | warning ("Unsupported with this platform/compiler combination."); |
c906108c SS |
6398 | } |
6399 | ||
6400 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6401 | inside a catch_errors */ | |
6402 | ||
6403 | static int | |
4efb68b1 | 6404 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6405 | { |
6406 | args_for_catchpoint_enable *args = arg; | |
6407 | struct symtab_and_line *sal; | |
b5de0fa7 | 6408 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6409 | if (sal == NULL) |
6410 | return 0; | |
6411 | else if (sal == (struct symtab_and_line *) -1) | |
6412 | return -1; | |
6413 | else | |
c5aa993b | 6414 | return 1; /*is valid */ |
c906108c SS |
6415 | } |
6416 | ||
c906108c | 6417 | static void |
fba45db2 | 6418 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6419 | { |
c5aa993b | 6420 | |
c906108c SS |
6421 | /* The first argument may be an event name, such as "start" or "load". |
6422 | If so, then handle it as such. If it doesn't match an event name, | |
6423 | then attempt to interpret it as an exception name. (This latter is | |
6424 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6425 | |
c906108c | 6426 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6427 | char *arg1_start = arg; |
6428 | char *arg1_end; | |
6429 | int arg1_length; | |
6430 | ||
c906108c SS |
6431 | if (arg1_start == NULL) |
6432 | { | |
c5aa993b | 6433 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6434 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6435 | /* return; */ | |
c5aa993b | 6436 | /* Now, this is not allowed */ |
c906108c SS |
6437 | error ("Catch requires an event name."); |
6438 | ||
6439 | } | |
6440 | arg1_end = ep_find_event_name_end (arg1_start); | |
6441 | if (arg1_end == NULL) | |
6442 | error ("catch requires an event"); | |
6443 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6444 | |
c906108c SS |
6445 | /* Try to match what we found against known event names. */ |
6446 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6447 | { | |
6448 | error ("Catch of signal not yet implemented"); | |
6449 | } | |
6450 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6451 | { | |
53a5351d JM |
6452 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6453 | tempflag, from_tty); | |
c906108c SS |
6454 | } |
6455 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6456 | { | |
53a5351d JM |
6457 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6458 | tempflag, from_tty); | |
c906108c SS |
6459 | } |
6460 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6461 | { | |
6462 | error ("Catch of thread_start not yet implemented"); | |
6463 | } | |
6464 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6465 | { | |
6466 | error ("Catch of thread_exit not yet implemented"); | |
6467 | } | |
6468 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6469 | { | |
6470 | error ("Catch of thread_join not yet implemented"); | |
6471 | } | |
6472 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6473 | { | |
6474 | error ("Catch of start not yet implemented"); | |
6475 | } | |
6476 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6477 | { | |
6478 | error ("Catch of exit not yet implemented"); | |
6479 | } | |
6480 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6481 | { | |
c5aa993b | 6482 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6483 | } |
6484 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6485 | { | |
c5aa993b | 6486 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6487 | } |
6488 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6489 | { | |
c5aa993b | 6490 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6491 | } |
6492 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6493 | { | |
c5aa993b | 6494 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6495 | } |
6496 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6497 | { | |
c5aa993b | 6498 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6499 | } |
6500 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6501 | { | |
6502 | error ("Catch of stop not yet implemented"); | |
6503 | } | |
c5aa993b | 6504 | |
c906108c SS |
6505 | /* This doesn't appear to be an event name */ |
6506 | ||
6507 | else | |
6508 | { | |
6509 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6510 | as the name of an exception */ |
c906108c | 6511 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6512 | /* Now this is not allowed */ |
c906108c SS |
6513 | error ("Unknown event kind specified for catch"); |
6514 | ||
6515 | } | |
6516 | } | |
6517 | ||
6518 | /* Used by the gui, could be made a worker for other things. */ | |
6519 | ||
6520 | struct breakpoint * | |
fba45db2 | 6521 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6522 | { |
6523 | struct breakpoint *b; | |
4d28f7a8 | 6524 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6525 | set_breakpoint_count (breakpoint_count + 1); |
6526 | b->number = breakpoint_count; | |
c906108c SS |
6527 | b->cond = 0; |
6528 | b->thread = -1; | |
6529 | return b; | |
6530 | } | |
6531 | ||
c906108c | 6532 | static void |
fba45db2 | 6533 | catch_command (char *arg, int from_tty) |
c906108c SS |
6534 | { |
6535 | catch_command_1 (arg, 0, from_tty); | |
6536 | } | |
6537 | \f | |
6538 | ||
6539 | static void | |
fba45db2 | 6540 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6541 | { |
6542 | catch_command_1 (arg, 1, from_tty); | |
6543 | } | |
6544 | ||
80f8a6eb | 6545 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6546 | |
6547 | static void | |
fba45db2 | 6548 | clear_command (char *arg, int from_tty) |
c906108c | 6549 | { |
80f8a6eb | 6550 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6551 | int default_match; |
6552 | struct symtabs_and_lines sals; | |
6553 | struct symtab_and_line sal; | |
c906108c SS |
6554 | int i; |
6555 | ||
6556 | if (arg) | |
6557 | { | |
6558 | sals = decode_line_spec (arg, 1); | |
6559 | default_match = 0; | |
6560 | } | |
6561 | else | |
6562 | { | |
c5aa993b | 6563 | sals.sals = (struct symtab_and_line *) |
c906108c | 6564 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6565 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6566 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6567 | sal.line = default_breakpoint_line; |
6568 | sal.symtab = default_breakpoint_symtab; | |
6569 | sal.pc = default_breakpoint_address; | |
6570 | if (sal.symtab == 0) | |
6571 | error ("No source file specified."); | |
6572 | ||
6573 | sals.sals[0] = sal; | |
6574 | sals.nelts = 1; | |
6575 | ||
6576 | default_match = 1; | |
6577 | } | |
6578 | ||
6579 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6580 | to it. Do it in two passes, solely to preserve the current |
6581 | behavior that from_tty is forced true if we delete more than | |
6582 | one breakpoint. */ | |
c906108c | 6583 | |
80f8a6eb | 6584 | found = NULL; |
c906108c SS |
6585 | for (i = 0; i < sals.nelts; i++) |
6586 | { | |
6587 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6588 | If line given (pc == 0), clear all bpts on specified line. |
6589 | If defaulting, clear all bpts on default line | |
c906108c | 6590 | or at default pc. |
c5aa993b JM |
6591 | |
6592 | defaulting sal.pc != 0 tests to do | |
6593 | ||
6594 | 0 1 pc | |
6595 | 1 1 pc _and_ line | |
6596 | 0 0 line | |
6597 | 1 0 <can't happen> */ | |
c906108c SS |
6598 | |
6599 | sal = sals.sals[i]; | |
80f8a6eb | 6600 | prev = NULL; |
c906108c | 6601 | |
80f8a6eb MS |
6602 | /* Find all matching breakpoints, remove them from the |
6603 | breakpoint chain, and add them to the 'found' chain. */ | |
6604 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6605 | { |
80f8a6eb MS |
6606 | /* Are we going to delete b? */ |
6607 | if (b->type != bp_none | |
6608 | && b->type != bp_watchpoint | |
6609 | && b->type != bp_hardware_watchpoint | |
6610 | && b->type != bp_read_watchpoint | |
6611 | && b->type != bp_access_watchpoint | |
6612 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6613 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6614 | && (!section_is_overlay (b->loc->section) |
6615 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6616 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6617 | || ((default_match || (0 == sal.pc)) | |
6618 | && b->source_file != NULL | |
6619 | && sal.symtab != NULL | |
6314a349 | 6620 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
80f8a6eb MS |
6621 | && b->line_number == sal.line))) |
6622 | /* Yes, if sal source file and line matches b. */ | |
6623 | { | |
6624 | /* Remove it from breakpoint_chain... */ | |
6625 | if (b == breakpoint_chain) | |
6626 | { | |
6627 | /* b is at the head of the list */ | |
6628 | breakpoint_chain = b->next; | |
6629 | } | |
6630 | else | |
6631 | { | |
6632 | prev->next = b->next; | |
6633 | } | |
6634 | /* And add it to 'found' chain. */ | |
6635 | b->next = found; | |
6636 | found = b; | |
6637 | } | |
c906108c | 6638 | else |
80f8a6eb MS |
6639 | { |
6640 | /* Keep b, and keep a pointer to it. */ | |
6641 | prev = b; | |
6642 | } | |
c906108c | 6643 | } |
80f8a6eb MS |
6644 | } |
6645 | /* Now go thru the 'found' chain and delete them. */ | |
6646 | if (found == 0) | |
6647 | { | |
6648 | if (arg) | |
6649 | error ("No breakpoint at %s.", arg); | |
6650 | else | |
6651 | error ("No breakpoint at this line."); | |
6652 | } | |
c906108c | 6653 | |
80f8a6eb MS |
6654 | if (found->next) |
6655 | from_tty = 1; /* Always report if deleted more than one */ | |
6656 | if (from_tty) | |
6657 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6658 | breakpoints_changed (); | |
6659 | while (found) | |
6660 | { | |
c5aa993b | 6661 | if (from_tty) |
80f8a6eb MS |
6662 | printf_unfiltered ("%d ", found->number); |
6663 | tmp = found->next; | |
6664 | delete_breakpoint (found); | |
6665 | found = tmp; | |
c906108c | 6666 | } |
80f8a6eb MS |
6667 | if (from_tty) |
6668 | putchar_unfiltered ('\n'); | |
c906108c SS |
6669 | } |
6670 | \f | |
6671 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6672 | all breakpoints that are marked for deletion, whether hit or not. | |
6673 | This is called after any breakpoint is hit, or after errors. */ | |
6674 | ||
6675 | void | |
fba45db2 | 6676 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6677 | { |
6678 | struct breakpoint *b, *temp; | |
6679 | ||
6680 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6681 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6682 | && bs->stop) |
6683 | delete_breakpoint (bs->breakpoint_at); | |
6684 | ||
6685 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6686 | { |
b5de0fa7 | 6687 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6688 | delete_breakpoint (b); |
6689 | } | |
c906108c SS |
6690 | } |
6691 | ||
53a5351d JM |
6692 | /* Delete a breakpoint and clean up all traces of it in the data |
6693 | structures. */ | |
c906108c SS |
6694 | |
6695 | void | |
fba45db2 | 6696 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6697 | { |
52f0bd74 AC |
6698 | struct breakpoint *b; |
6699 | bpstat bs; | |
7cc221ef | 6700 | struct bp_location *loc; |
c906108c SS |
6701 | |
6702 | if (bpt == NULL) | |
6703 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6704 | ||
6705 | ||
6706 | /* Has this bp already been deleted? This can happen because multiple | |
6707 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6708 | ||
6709 | One example of this happening is a watchpoint's scope bp. When the | |
6710 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6711 | delete it. We also delete its scope bp. But the scope bp is marked | |
6712 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6713 | checked for auto-deleting bp's, which are deleted. | |
6714 | ||
6715 | A real solution to this problem might involve reference counts in bp's, | |
6716 | and/or giving them pointers back to their referencing bpstat's, and | |
6717 | teaching delete_breakpoint to only free a bp's storage when no more | |
6718 | references were extent. A cheaper bandaid was chosen. */ | |
6719 | if (bpt->type == bp_none) | |
6720 | return; | |
6721 | ||
9a4105ab AC |
6722 | if (deprecated_delete_breakpoint_hook) |
6723 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 6724 | breakpoint_delete_event (bpt->number); |
c906108c | 6725 | |
5cab636d | 6726 | if (bpt->loc->inserted) |
0bde7532 | 6727 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6728 | |
7270d8f2 OF |
6729 | free_valchain (bpt->loc); |
6730 | ||
c906108c SS |
6731 | if (breakpoint_chain == bpt) |
6732 | breakpoint_chain = bpt->next; | |
6733 | ||
7cc221ef DJ |
6734 | if (bp_location_chain == bpt->loc) |
6735 | bp_location_chain = bpt->loc->next; | |
6736 | ||
c906108c SS |
6737 | /* If we have callback-style exception catchpoints, don't go through |
6738 | the adjustments to the C++ runtime library etc. if the inferior | |
6739 | isn't actually running. target_enable_exception_callback for a | |
6740 | null target ops vector gives an undesirable error message, so we | |
6741 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6742 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6743 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6744 | { | |
53a5351d | 6745 | /* Format possible error msg */ |
9ebf4acf AC |
6746 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6747 | bpt->number); | |
6748 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
6749 | args_for_catchpoint_enable args; | |
53a5351d JM |
6750 | args.kind = bpt->type == bp_catch_catch ? |
6751 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6752 | args.enable_p = 0; |
c906108c SS |
6753 | catch_errors (cover_target_enable_exception_callback, &args, |
6754 | message, RETURN_MASK_ALL); | |
9ebf4acf | 6755 | do_cleanups (cleanups); |
c906108c SS |
6756 | } |
6757 | ||
6758 | ||
6759 | ALL_BREAKPOINTS (b) | |
6760 | if (b->next == bpt) | |
c5aa993b JM |
6761 | { |
6762 | b->next = bpt->next; | |
6763 | break; | |
6764 | } | |
c906108c | 6765 | |
7cc221ef DJ |
6766 | ALL_BP_LOCATIONS (loc) |
6767 | if (loc->next == bpt->loc) | |
6768 | { | |
6769 | loc->next = bpt->loc->next; | |
6770 | break; | |
6771 | } | |
6772 | ||
9f60f21b | 6773 | check_duplicates (bpt); |
c906108c SS |
6774 | /* If this breakpoint was inserted, and there is another breakpoint |
6775 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 6776 | if (bpt->loc->inserted |
c906108c SS |
6777 | && bpt->type != bp_hardware_watchpoint |
6778 | && bpt->type != bp_read_watchpoint | |
6779 | && bpt->type != bp_access_watchpoint | |
6780 | && bpt->type != bp_catch_fork | |
6781 | && bpt->type != bp_catch_vfork | |
6782 | && bpt->type != bp_catch_exec) | |
6783 | { | |
6784 | ALL_BREAKPOINTS (b) | |
5cab636d | 6785 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 6786 | && b->loc->section == bpt->loc->section |
5cab636d | 6787 | && !b->loc->duplicate |
b5de0fa7 EZ |
6788 | && b->enable_state != bp_disabled |
6789 | && b->enable_state != bp_shlib_disabled | |
0101ce28 | 6790 | && !b->pending |
b5de0fa7 | 6791 | && b->enable_state != bp_call_disabled) |
c5aa993b JM |
6792 | { |
6793 | int val; | |
53a5351d | 6794 | |
c2c6d25f JM |
6795 | /* We should never reach this point if there is a permanent |
6796 | breakpoint at the same address as the one being deleted. | |
6797 | If there is a permanent breakpoint somewhere, it should | |
6798 | always be the only one inserted. */ | |
b5de0fa7 | 6799 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6800 | internal_error (__FILE__, __LINE__, |
6801 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6802 | "a permanent breakpoint"); |
6803 | ||
53a5351d | 6804 | if (b->type == bp_hardware_breakpoint) |
5cab636d | 6805 | val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6806 | else |
5cab636d | 6807 | val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6808 | |
81d0cc19 | 6809 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6810 | if (val != 0) |
6811 | { | |
81d0cc19 GS |
6812 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6813 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6814 | ||
6815 | ||
6816 | if (b->type == bp_hardware_breakpoint) | |
6817 | { | |
6818 | fprintf_unfiltered (tmp_error_stream, | |
6819 | "Cannot insert hardware breakpoint %d.\n" | |
6820 | "You may have requested too many hardware breakpoints.\n", | |
6821 | b->number); | |
6822 | } | |
6823 | else | |
6824 | { | |
6825 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6826 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
5cab636d | 6827 | print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
6828 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
6829 | safe_strerror (val)); | |
6830 | } | |
6831 | ||
6832 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6833 | target_terminal_ours_for_output (); |
81d0cc19 | 6834 | error_stream(tmp_error_stream); |
c5aa993b JM |
6835 | } |
6836 | else | |
5cab636d | 6837 | b->loc->inserted = 1; |
c5aa993b | 6838 | } |
c906108c SS |
6839 | } |
6840 | ||
6841 | free_command_lines (&bpt->commands); | |
6842 | if (bpt->cond) | |
b8c9b27d | 6843 | xfree (bpt->cond); |
c906108c | 6844 | if (bpt->cond_string != NULL) |
b8c9b27d | 6845 | xfree (bpt->cond_string); |
c906108c | 6846 | if (bpt->addr_string != NULL) |
b8c9b27d | 6847 | xfree (bpt->addr_string); |
c906108c | 6848 | if (bpt->exp != NULL) |
b8c9b27d | 6849 | xfree (bpt->exp); |
c906108c | 6850 | if (bpt->exp_string != NULL) |
b8c9b27d | 6851 | xfree (bpt->exp_string); |
c906108c SS |
6852 | if (bpt->val != NULL) |
6853 | value_free (bpt->val); | |
6854 | if (bpt->source_file != NULL) | |
b8c9b27d | 6855 | xfree (bpt->source_file); |
c906108c | 6856 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6857 | xfree (bpt->dll_pathname); |
c906108c | 6858 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6859 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6860 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6861 | xfree (bpt->exec_pathname); |
c906108c SS |
6862 | |
6863 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6864 | /* FIXME, how can we find all bpstat's? | |
6865 | We just check stop_bpstat for now. */ | |
6866 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6867 | if (bs->breakpoint_at == bpt) | |
6868 | { | |
6869 | bs->breakpoint_at = NULL; | |
c906108c | 6870 | bs->old_val = NULL; |
c2b8ed2c | 6871 | /* bs->commands will be freed later. */ |
c906108c SS |
6872 | } |
6873 | /* On the chance that someone will soon try again to delete this same | |
6874 | bp, we mark it as deleted before freeing its storage. */ | |
6875 | bpt->type = bp_none; | |
6876 | ||
5cab636d | 6877 | xfree (bpt->loc); |
b8c9b27d | 6878 | xfree (bpt); |
c906108c SS |
6879 | } |
6880 | ||
4d6140d9 AC |
6881 | static void |
6882 | do_delete_breakpoint_cleanup (void *b) | |
6883 | { | |
6884 | delete_breakpoint (b); | |
6885 | } | |
6886 | ||
6887 | struct cleanup * | |
6888 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6889 | { | |
6890 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6891 | } | |
6892 | ||
6893 | struct cleanup * | |
6894 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6895 | { | |
6896 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6897 | } | |
6898 | ||
c906108c | 6899 | void |
fba45db2 | 6900 | delete_command (char *arg, int from_tty) |
c906108c SS |
6901 | { |
6902 | struct breakpoint *b, *temp; | |
6903 | ||
ea9365bb TT |
6904 | dont_repeat (); |
6905 | ||
c906108c SS |
6906 | if (arg == 0) |
6907 | { | |
6908 | int breaks_to_delete = 0; | |
6909 | ||
6910 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6911 | Do not delete internal or call-dummy breakpoints, these |
6912 | have to be deleted with an explicit breakpoint number argument. */ | |
6913 | ALL_BREAKPOINTS (b) | |
6914 | { | |
6915 | if (b->type != bp_call_dummy && | |
6916 | b->type != bp_shlib_event && | |
c4093a6a | 6917 | b->type != bp_thread_event && |
1900040c | 6918 | b->type != bp_overlay_event && |
c5aa993b JM |
6919 | b->number >= 0) |
6920 | breaks_to_delete = 1; | |
6921 | } | |
c906108c SS |
6922 | |
6923 | /* Ask user only if there are some breakpoints to delete. */ | |
6924 | if (!from_tty | |
6925 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6926 | { | |
c5aa993b JM |
6927 | ALL_BREAKPOINTS_SAFE (b, temp) |
6928 | { | |
6929 | if (b->type != bp_call_dummy && | |
6930 | b->type != bp_shlib_event && | |
c4093a6a | 6931 | b->type != bp_thread_event && |
1900040c | 6932 | b->type != bp_overlay_event && |
c5aa993b JM |
6933 | b->number >= 0) |
6934 | delete_breakpoint (b); | |
6935 | } | |
c906108c SS |
6936 | } |
6937 | } | |
6938 | else | |
6939 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6940 | } | |
6941 | ||
6942 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6943 | The value we return ends up being the return value from catch_errors. | |
6944 | Unused in this case. */ | |
6945 | ||
6946 | static int | |
4efb68b1 | 6947 | breakpoint_re_set_one (void *bint) |
c906108c | 6948 | { |
53a5351d JM |
6949 | /* get past catch_errs */ |
6950 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6951 | struct value *mark; |
6952 | int i; | |
84acb35a JJ |
6953 | int not_found; |
6954 | int *not_found_ptr = NULL; | |
c906108c SS |
6955 | struct symtabs_and_lines sals; |
6956 | char *s; | |
b5de0fa7 | 6957 | enum enable_state save_enable; |
c906108c SS |
6958 | |
6959 | switch (b->type) | |
6960 | { | |
6961 | case bp_none: | |
53a5351d JM |
6962 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6963 | b->number); | |
c906108c SS |
6964 | return 0; |
6965 | case bp_breakpoint: | |
6966 | case bp_hardware_breakpoint: | |
6967 | case bp_catch_load: | |
6968 | case bp_catch_unload: | |
6969 | if (b->addr_string == NULL) | |
6970 | { | |
6971 | /* Anything without a string can't be re-set. */ | |
6972 | delete_breakpoint (b); | |
6973 | return 0; | |
6974 | } | |
b18c45ed AC |
6975 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
6976 | ||
6977 | ``And a hack it is, although Apple's Darwin version of GDB | |
6978 | contains an almost identical hack to implement a "future | |
6979 | break" command. It seems to work in many real world cases, | |
6980 | but it is easy to come up with a test case where the patch | |
6981 | doesn't help at all.'' | |
6982 | ||
6983 | ``It seems that the way GDB implements breakpoints - in - | |
6984 | shared - libraries was designed for a.out shared library | |
6985 | systems (SunOS 4) where shared libraries were loaded at a | |
6986 | fixed address in memory. Since ELF shared libraries can (and | |
6987 | will) be loaded at any address in memory, things break. | |
6988 | Fixing this is not trivial. Therefore, I'm not sure whether | |
6989 | we should add this hack to the branch only. I cannot | |
6990 | guarantee that things will be fixed on the trunk in the near | |
6991 | future.'' | |
6992 | ||
6993 | In case we have a problem, disable this breakpoint. We'll | |
6994 | restore its status if we succeed. Don't disable a | |
6995 | shlib_disabled breakpoint though. There's a fair chance we | |
6996 | can't re-set it if the shared library it's in hasn't been | |
6997 | loaded yet. */ | |
0101ce28 JJ |
6998 | |
6999 | if (b->pending) | |
7000 | break; | |
7001 | ||
b5de0fa7 | 7002 | save_enable = b->enable_state; |
b18c45ed AC |
7003 | if (b->enable_state != bp_shlib_disabled) |
7004 | b->enable_state = bp_disabled; | |
84acb35a JJ |
7005 | else |
7006 | /* If resetting a shlib-disabled breakpoint, we don't want to | |
7007 | see an error message if it is not found since we will expect | |
7008 | this to occur until the shared library is finally reloaded. | |
7009 | We accomplish this by giving decode_line_1 a pointer to use | |
7010 | for silent notification that the symbol is not found. */ | |
7011 | not_found_ptr = ¬_found; | |
c906108c SS |
7012 | |
7013 | set_language (b->language); | |
7014 | input_radix = b->input_radix; | |
7015 | s = b->addr_string; | |
84acb35a JJ |
7016 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7017 | not_found_ptr); | |
c906108c SS |
7018 | for (i = 0; i < sals.nelts; i++) |
7019 | { | |
7020 | resolve_sal_pc (&sals.sals[i]); | |
7021 | ||
7022 | /* Reparse conditions, they might contain references to the | |
7023 | old symtab. */ | |
7024 | if (b->cond_string != NULL) | |
7025 | { | |
7026 | s = b->cond_string; | |
7027 | if (b->cond) | |
fad0733a DJ |
7028 | { |
7029 | xfree (b->cond); | |
7030 | /* Avoid re-freeing b->exp if an error during the call | |
7031 | to parse_exp_1. */ | |
7032 | b->cond = NULL; | |
7033 | } | |
c906108c SS |
7034 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7035 | } | |
7036 | ||
c5aa993b | 7037 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 7038 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
7039 | /* ...or new and old breakpoints both have source files, and |
7040 | the source file name or the line number changes... */ | |
c906108c SS |
7041 | || (b->source_file != NULL |
7042 | && sals.sals[i].symtab != NULL | |
6314a349 | 7043 | && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0 |
c906108c | 7044 | || b->line_number != sals.sals[i].line) |
c906108c | 7045 | ) |
c5aa993b JM |
7046 | /* ...or we switch between having a source file and not having |
7047 | one. */ | |
7048 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7049 | ) | |
c906108c SS |
7050 | { |
7051 | if (b->source_file != NULL) | |
b8c9b27d | 7052 | xfree (b->source_file); |
c906108c SS |
7053 | if (sals.sals[i].symtab == NULL) |
7054 | b->source_file = NULL; | |
7055 | else | |
7056 | b->source_file = | |
7057 | savestring (sals.sals[i].symtab->filename, | |
7058 | strlen (sals.sals[i].symtab->filename)); | |
7059 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
7060 | b->loc->requested_address = sals.sals[i].pc; |
7061 | b->loc->address | |
88f7da05 KB |
7062 | = adjust_breakpoint_address (b->loc->requested_address, |
7063 | b->type); | |
c906108c | 7064 | |
c5aa993b | 7065 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7066 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7067 | breakpoints. */ |
c906108c SS |
7068 | |
7069 | mention (b); | |
7070 | ||
7071 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7072 | rather than once for every breakpoint. */ |
c906108c SS |
7073 | breakpoints_changed (); |
7074 | } | |
cf3a9e5b | 7075 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 7076 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7077 | |
7078 | ||
c5aa993b | 7079 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7080 | can be used. */ |
9f60f21b | 7081 | check_duplicates (b); |
c906108c SS |
7082 | |
7083 | } | |
b8c9b27d | 7084 | xfree (sals.sals); |
c906108c SS |
7085 | break; |
7086 | ||
7087 | case bp_watchpoint: | |
7088 | case bp_hardware_watchpoint: | |
7089 | case bp_read_watchpoint: | |
7090 | case bp_access_watchpoint: | |
7091 | innermost_block = NULL; | |
53a5351d JM |
7092 | /* The issue arises of what context to evaluate this in. The |
7093 | same one as when it was set, but what does that mean when | |
7094 | symbols have been re-read? We could save the filename and | |
7095 | functionname, but if the context is more local than that, the | |
7096 | best we could do would be something like how many levels deep | |
7097 | and which index at that particular level, but that's going to | |
7098 | be less stable than filenames or function names. */ | |
7099 | ||
c906108c SS |
7100 | /* So for now, just use a global context. */ |
7101 | if (b->exp) | |
a355c7de AC |
7102 | { |
7103 | xfree (b->exp); | |
7104 | /* Avoid re-freeing b->exp if an error during the call to | |
7105 | parse_expression. */ | |
7106 | b->exp = NULL; | |
7107 | } | |
c906108c SS |
7108 | b->exp = parse_expression (b->exp_string); |
7109 | b->exp_valid_block = innermost_block; | |
7110 | mark = value_mark (); | |
7111 | if (b->val) | |
a355c7de AC |
7112 | { |
7113 | value_free (b->val); | |
7114 | /* Avoid re-freeing b->val if an error during the call to | |
7115 | evaluate_expression. */ | |
7116 | b->val = NULL; | |
7117 | } | |
c906108c SS |
7118 | b->val = evaluate_expression (b->exp); |
7119 | release_value (b->val); | |
468d015d | 7120 | if (VALUE_LAZY (b->val) && breakpoint_enabled (b)) |
c906108c SS |
7121 | value_fetch_lazy (b->val); |
7122 | ||
7123 | if (b->cond_string != NULL) | |
7124 | { | |
7125 | s = b->cond_string; | |
7126 | if (b->cond) | |
a355c7de AC |
7127 | { |
7128 | xfree (b->cond); | |
7129 | /* Avoid re-freeing b->exp if an error during the call | |
7130 | to parse_exp_1. */ | |
7131 | b->cond = NULL; | |
7132 | } | |
c5aa993b | 7133 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7134 | } |
468d015d | 7135 | if (breakpoint_enabled (b)) |
c906108c SS |
7136 | mention (b); |
7137 | value_free_to_mark (mark); | |
7138 | break; | |
c5aa993b JM |
7139 | case bp_catch_catch: |
7140 | case bp_catch_throw: | |
c906108c | 7141 | break; |
c5aa993b JM |
7142 | /* We needn't really do anything to reset these, since the mask |
7143 | that requests them is unaffected by e.g., new libraries being | |
7144 | loaded. */ | |
c906108c SS |
7145 | case bp_catch_fork: |
7146 | case bp_catch_vfork: | |
7147 | case bp_catch_exec: | |
7148 | break; | |
c5aa993b | 7149 | |
c906108c SS |
7150 | default: |
7151 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7152 | /* fall through */ | |
1900040c MS |
7153 | /* Delete longjmp and overlay event breakpoints; they will be |
7154 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7155 | case bp_longjmp: |
7156 | case bp_longjmp_resume: | |
1900040c | 7157 | case bp_overlay_event: |
c906108c SS |
7158 | delete_breakpoint (b); |
7159 | break; | |
7160 | ||
c5aa993b JM |
7161 | /* This breakpoint is special, it's set up when the inferior |
7162 | starts and we really don't want to touch it. */ | |
c906108c SS |
7163 | case bp_shlib_event: |
7164 | ||
c4093a6a JM |
7165 | /* Like bp_shlib_event, this breakpoint type is special. |
7166 | Once it is set up, we do not want to touch it. */ | |
7167 | case bp_thread_event: | |
7168 | ||
c5aa993b JM |
7169 | /* Keep temporary breakpoints, which can be encountered when we step |
7170 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7171 | Otherwise these should have been blown away via the cleanup chain | |
7172 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7173 | case bp_until: |
7174 | case bp_finish: | |
7175 | case bp_watchpoint_scope: | |
7176 | case bp_call_dummy: | |
7177 | case bp_step_resume: | |
7178 | break; | |
7179 | } | |
7180 | ||
7181 | return 0; | |
7182 | } | |
7183 | ||
7184 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7185 | void | |
fba45db2 | 7186 | breakpoint_re_set (void) |
c906108c SS |
7187 | { |
7188 | struct breakpoint *b, *temp; | |
7189 | enum language save_language; | |
7190 | int save_input_radix; | |
c5aa993b | 7191 | |
c906108c SS |
7192 | save_language = current_language->la_language; |
7193 | save_input_radix = input_radix; | |
7194 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7195 | { |
53a5351d | 7196 | /* Format possible error msg */ |
9ebf4acf AC |
7197 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7198 | b->number); | |
7199 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7200 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7201 | do_cleanups (cleanups); |
c5aa993b | 7202 | } |
c906108c SS |
7203 | set_language (save_language); |
7204 | input_radix = save_input_radix; | |
7205 | ||
9df628e0 RE |
7206 | if (GET_LONGJMP_TARGET_P ()) |
7207 | { | |
7208 | create_longjmp_breakpoint ("longjmp"); | |
7209 | create_longjmp_breakpoint ("_longjmp"); | |
7210 | create_longjmp_breakpoint ("siglongjmp"); | |
7211 | create_longjmp_breakpoint ("_siglongjmp"); | |
7212 | create_longjmp_breakpoint (NULL); | |
7213 | } | |
1900040c MS |
7214 | |
7215 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7216 | } |
7217 | \f | |
c906108c SS |
7218 | /* Reset the thread number of this breakpoint: |
7219 | ||
7220 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7221 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7222 | void |
fba45db2 | 7223 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7224 | { |
7225 | if (b->thread != -1) | |
7226 | { | |
39f77062 KB |
7227 | if (in_thread_list (inferior_ptid)) |
7228 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7229 | } |
7230 | } | |
7231 | ||
03ac34d5 MS |
7232 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7233 | If from_tty is nonzero, it prints a message to that effect, | |
7234 | which ends with a period (no newline). */ | |
7235 | ||
c906108c | 7236 | void |
fba45db2 | 7237 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7238 | { |
52f0bd74 | 7239 | struct breakpoint *b; |
c906108c SS |
7240 | |
7241 | if (count < 0) | |
7242 | count = 0; | |
7243 | ||
7244 | ALL_BREAKPOINTS (b) | |
7245 | if (b->number == bptnum) | |
c5aa993b JM |
7246 | { |
7247 | b->ignore_count = count; | |
221ea385 KS |
7248 | if (from_tty) |
7249 | { | |
7250 | if (count == 0) | |
7251 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7252 | bptnum); | |
7253 | else if (count == 1) | |
7254 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7255 | bptnum); | |
7256 | else | |
7257 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7258 | count, bptnum); | |
7259 | } | |
c5aa993b | 7260 | breakpoints_changed (); |
221ea385 | 7261 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7262 | return; |
7263 | } | |
c906108c SS |
7264 | |
7265 | error ("No breakpoint number %d.", bptnum); | |
7266 | } | |
7267 | ||
7268 | /* Clear the ignore counts of all breakpoints. */ | |
7269 | void | |
fba45db2 | 7270 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7271 | { |
7272 | struct breakpoint *b; | |
7273 | ||
7274 | ALL_BREAKPOINTS (b) | |
7275 | b->ignore_count = 0; | |
7276 | } | |
7277 | ||
7278 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7279 | ||
7280 | static void | |
fba45db2 | 7281 | ignore_command (char *args, int from_tty) |
c906108c SS |
7282 | { |
7283 | char *p = args; | |
52f0bd74 | 7284 | int num; |
c906108c SS |
7285 | |
7286 | if (p == 0) | |
7287 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7288 | |
c906108c | 7289 | num = get_number (&p); |
5c44784c JM |
7290 | if (num == 0) |
7291 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7292 | if (*p == 0) |
7293 | error ("Second argument (specified ignore-count) is missing."); | |
7294 | ||
7295 | set_ignore_count (num, | |
7296 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7297 | from_tty); | |
221ea385 KS |
7298 | if (from_tty) |
7299 | printf_filtered ("\n"); | |
c906108c SS |
7300 | } |
7301 | \f | |
7302 | /* Call FUNCTION on each of the breakpoints | |
7303 | whose numbers are given in ARGS. */ | |
7304 | ||
7305 | static void | |
831662b3 | 7306 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7307 | { |
52f0bd74 | 7308 | char *p = args; |
c906108c | 7309 | char *p1; |
52f0bd74 AC |
7310 | int num; |
7311 | struct breakpoint *b, *tmp; | |
11cf8741 | 7312 | int match; |
c906108c SS |
7313 | |
7314 | if (p == 0) | |
7315 | error_no_arg ("one or more breakpoint numbers"); | |
7316 | ||
7317 | while (*p) | |
7318 | { | |
11cf8741 | 7319 | match = 0; |
c906108c | 7320 | p1 = p; |
c5aa993b | 7321 | |
5c44784c JM |
7322 | num = get_number_or_range (&p1); |
7323 | if (num == 0) | |
c5aa993b | 7324 | { |
5c44784c JM |
7325 | warning ("bad breakpoint number at or near '%s'", p); |
7326 | } | |
7327 | else | |
7328 | { | |
7329 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7330 | if (b->number == num) | |
7331 | { | |
7332 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7333 | match = 1; |
5c44784c JM |
7334 | function (b); |
7335 | if (related_breakpoint) | |
7336 | function (related_breakpoint); | |
11cf8741 | 7337 | break; |
5c44784c | 7338 | } |
11cf8741 JM |
7339 | if (match == 0) |
7340 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7341 | } |
c906108c SS |
7342 | p = p1; |
7343 | } | |
7344 | } | |
7345 | ||
1900040c MS |
7346 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7347 | If from_tty is nonzero, it prints a message to that effect, | |
7348 | which ends with a period (no newline). */ | |
7349 | ||
c906108c | 7350 | void |
fba45db2 | 7351 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7352 | { |
7353 | /* Never disable a watchpoint scope breakpoint; we want to | |
7354 | hit them when we leave scope so we can delete both the | |
7355 | watchpoint and its scope breakpoint at that time. */ | |
7356 | if (bpt->type == bp_watchpoint_scope) | |
7357 | return; | |
7358 | ||
c2c6d25f | 7359 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7360 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7361 | return; |
7362 | ||
b5de0fa7 | 7363 | bpt->enable_state = bp_disabled; |
c906108c | 7364 | |
9f60f21b | 7365 | check_duplicates (bpt); |
c906108c | 7366 | |
9a4105ab AC |
7367 | if (deprecated_modify_breakpoint_hook) |
7368 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7369 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7370 | } |
7371 | ||
c906108c | 7372 | static void |
fba45db2 | 7373 | disable_command (char *args, int from_tty) |
c906108c | 7374 | { |
52f0bd74 | 7375 | struct breakpoint *bpt; |
c906108c SS |
7376 | if (args == 0) |
7377 | ALL_BREAKPOINTS (bpt) | |
7378 | switch (bpt->type) | |
c5aa993b JM |
7379 | { |
7380 | case bp_none: | |
53a5351d JM |
7381 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7382 | bpt->number); | |
c5aa993b JM |
7383 | continue; |
7384 | case bp_breakpoint: | |
7385 | case bp_catch_load: | |
7386 | case bp_catch_unload: | |
7387 | case bp_catch_fork: | |
7388 | case bp_catch_vfork: | |
7389 | case bp_catch_exec: | |
7390 | case bp_catch_catch: | |
7391 | case bp_catch_throw: | |
7392 | case bp_hardware_breakpoint: | |
7393 | case bp_watchpoint: | |
7394 | case bp_hardware_watchpoint: | |
7395 | case bp_read_watchpoint: | |
7396 | case bp_access_watchpoint: | |
7397 | disable_breakpoint (bpt); | |
7398 | default: | |
7399 | continue; | |
7400 | } | |
c906108c SS |
7401 | else |
7402 | map_breakpoint_numbers (args, disable_breakpoint); | |
7403 | } | |
7404 | ||
7405 | static void | |
fba45db2 | 7406 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7407 | { |
c906108c SS |
7408 | int target_resources_ok, other_type_used; |
7409 | struct value *mark; | |
7410 | ||
7411 | if (bpt->type == bp_hardware_breakpoint) | |
7412 | { | |
7413 | int i; | |
c5aa993b | 7414 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7415 | target_resources_ok = |
7416 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7417 | i + 1, 0); | |
c906108c | 7418 | if (target_resources_ok == 0) |
c5aa993b | 7419 | error ("No hardware breakpoint support in the target."); |
c906108c | 7420 | else if (target_resources_ok < 0) |
c5aa993b | 7421 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7422 | } |
7423 | ||
0101ce28 | 7424 | if (bpt->pending) |
c906108c | 7425 | { |
0101ce28 | 7426 | if (bpt->enable_state != bp_enabled) |
c906108c | 7427 | { |
0101ce28 JJ |
7428 | /* When enabling a pending breakpoint, we need to check if the breakpoint |
7429 | is resolvable since shared libraries could have been loaded | |
7430 | after the breakpoint was disabled. */ | |
7431 | breakpoints_changed (); | |
7432 | if (resolve_pending_breakpoint (bpt) == GDB_RC_OK) | |
c906108c | 7433 | { |
0101ce28 | 7434 | delete_breakpoint (bpt); |
c906108c SS |
7435 | return; |
7436 | } | |
0101ce28 JJ |
7437 | bpt->enable_state = bp_enabled; |
7438 | bpt->disposition = disposition; | |
c906108c | 7439 | } |
0101ce28 JJ |
7440 | } |
7441 | else /* Not a pending breakpoint. */ | |
7442 | { | |
7443 | if (bpt->enable_state != bp_permanent) | |
7444 | bpt->enable_state = bp_enabled; | |
7445 | bpt->disposition = disposition; | |
7446 | check_duplicates (bpt); | |
7447 | breakpoints_changed (); | |
7448 | ||
7449 | if (bpt->type == bp_watchpoint || | |
7450 | bpt->type == bp_hardware_watchpoint || | |
7451 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7452 | bpt->type == bp_access_watchpoint) |
7453 | { | |
7789d0fa AC |
7454 | struct frame_id saved_frame_id; |
7455 | ||
b04f3ab4 | 7456 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); |
0101ce28 JJ |
7457 | if (bpt->exp_valid_block != NULL) |
7458 | { | |
7459 | struct frame_info *fr = | |
7460 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7461 | if (fr == NULL) | |
7462 | { | |
7463 | printf_filtered ("\ | |
7464 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7465 | is valid is not currently in scope.\n", bpt->number); | |
7466 | bpt->enable_state = bp_disabled; | |
7467 | return; | |
7468 | } | |
0101ce28 JJ |
7469 | select_frame (fr); |
7470 | } | |
7471 | ||
7472 | value_free (bpt->val); | |
7473 | mark = value_mark (); | |
7474 | bpt->val = evaluate_expression (bpt->exp); | |
7475 | release_value (bpt->val); | |
7476 | if (VALUE_LAZY (bpt->val)) | |
7477 | value_fetch_lazy (bpt->val); | |
7478 | ||
7479 | if (bpt->type == bp_hardware_watchpoint || | |
7480 | bpt->type == bp_read_watchpoint || | |
7481 | bpt->type == bp_access_watchpoint) | |
c5aa993b | 7482 | { |
0101ce28 JJ |
7483 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7484 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7485 | ||
7486 | /* Hack around 'unused var' error for some targets here */ | |
7487 | (void) mem_cnt, i; | |
7488 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7489 | bpt->type, i + mem_cnt, other_type_used); | |
7490 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7491 | bp_watchpoint in the following condition */ | |
7492 | if (target_resources_ok < 0) | |
7493 | { | |
7494 | printf_filtered ("\ | |
c906108c SS |
7495 | Cannot enable watchpoint %d because target watch resources\n\ |
7496 | have been allocated for other watchpoints.\n", bpt->number); | |
0101ce28 JJ |
7497 | bpt->enable_state = bp_disabled; |
7498 | value_free_to_mark (mark); | |
7499 | return; | |
7500 | } | |
c5aa993b | 7501 | } |
0101ce28 | 7502 | |
7789d0fa | 7503 | select_frame (frame_find_by_id (saved_frame_id)); |
0101ce28 | 7504 | value_free_to_mark (mark); |
c5aa993b | 7505 | } |
c906108c | 7506 | } |
0101ce28 | 7507 | |
9a4105ab AC |
7508 | if (deprecated_modify_breakpoint_hook) |
7509 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7510 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7511 | } |
7512 | ||
7513 | void | |
fba45db2 | 7514 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7515 | { |
7516 | do_enable_breakpoint (bpt, bpt->disposition); | |
7517 | } | |
7518 | ||
7519 | /* The enable command enables the specified breakpoints (or all defined | |
7520 | breakpoints) so they once again become (or continue to be) effective | |
7521 | in stopping the inferior. */ | |
7522 | ||
c906108c | 7523 | static void |
fba45db2 | 7524 | enable_command (char *args, int from_tty) |
c906108c | 7525 | { |
52f0bd74 | 7526 | struct breakpoint *bpt; |
c906108c SS |
7527 | if (args == 0) |
7528 | ALL_BREAKPOINTS (bpt) | |
7529 | switch (bpt->type) | |
c5aa993b JM |
7530 | { |
7531 | case bp_none: | |
53a5351d JM |
7532 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7533 | bpt->number); | |
c5aa993b JM |
7534 | continue; |
7535 | case bp_breakpoint: | |
7536 | case bp_catch_load: | |
7537 | case bp_catch_unload: | |
7538 | case bp_catch_fork: | |
7539 | case bp_catch_vfork: | |
7540 | case bp_catch_exec: | |
7541 | case bp_catch_catch: | |
7542 | case bp_catch_throw: | |
7543 | case bp_hardware_breakpoint: | |
7544 | case bp_watchpoint: | |
7545 | case bp_hardware_watchpoint: | |
7546 | case bp_read_watchpoint: | |
7547 | case bp_access_watchpoint: | |
7548 | enable_breakpoint (bpt); | |
7549 | default: | |
7550 | continue; | |
7551 | } | |
c906108c SS |
7552 | else |
7553 | map_breakpoint_numbers (args, enable_breakpoint); | |
7554 | } | |
7555 | ||
7556 | static void | |
fba45db2 | 7557 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7558 | { |
b5de0fa7 | 7559 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7560 | } |
7561 | ||
c906108c | 7562 | static void |
fba45db2 | 7563 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7564 | { |
7565 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7566 | } | |
7567 | ||
7568 | static void | |
fba45db2 | 7569 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7570 | { |
b5de0fa7 | 7571 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7572 | } |
7573 | ||
c906108c | 7574 | static void |
fba45db2 | 7575 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7576 | { |
7577 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7578 | } | |
7579 | \f | |
fa8d40ab JJ |
7580 | static void |
7581 | set_breakpoint_cmd (char *args, int from_tty) | |
7582 | { | |
7583 | } | |
7584 | ||
7585 | static void | |
7586 | show_breakpoint_cmd (char *args, int from_tty) | |
7587 | { | |
7588 | } | |
7589 | ||
c906108c SS |
7590 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7591 | ||
7592 | struct symtabs_and_lines | |
fba45db2 | 7593 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7594 | { |
7595 | struct symtabs_and_lines sals; | |
7596 | if (string == 0) | |
7597 | error ("Empty line specification."); | |
7598 | if (default_breakpoint_valid) | |
7599 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7600 | default_breakpoint_symtab, |
7601 | default_breakpoint_line, | |
68219205 | 7602 | (char ***) NULL, NULL); |
c906108c SS |
7603 | else |
7604 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7605 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
7606 | if (*string) |
7607 | error ("Junk at end of line specification: %s", string); | |
7608 | return sals; | |
7609 | } | |
7610 | \f | |
7611 | void | |
fba45db2 | 7612 | _initialize_breakpoint (void) |
c906108c | 7613 | { |
fa8d40ab JJ |
7614 | static struct cmd_list_element *breakpoint_set_cmdlist; |
7615 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
7616 | struct cmd_list_element *c; |
7617 | ||
84acb35a JJ |
7618 | #ifdef SOLIB_ADD |
7619 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); | |
7620 | #endif | |
7621 | ||
c906108c SS |
7622 | breakpoint_chain = 0; |
7623 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7624 | before a breakpoint is set. */ | |
7625 | breakpoint_count = 0; | |
7626 | ||
7627 | add_com ("ignore", class_breakpoint, ignore_command, | |
7628 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7629 | Usage is `ignore N COUNT'."); | |
7630 | if (xdb_commands) | |
c5aa993b | 7631 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7632 | |
7633 | add_com ("commands", class_breakpoint, commands_command, | |
7634 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7635 | Give breakpoint number as argument after \"commands\".\n\ | |
7636 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7637 | The commands themselves follow starting on the next line.\n\ | |
7638 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7639 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7640 | then no output is printed when it is hit, except what the commands print."); | |
7641 | ||
7642 | add_com ("condition", class_breakpoint, condition_command, | |
7643 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7644 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7645 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7646 | |
c94fdfd0 EZ |
7647 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7648 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7649 | Like \"break\" except the breakpoint is only temporary,\n\ |
7650 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7651 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7652 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7653 | |
c94fdfd0 EZ |
7654 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7655 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7656 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7657 | some target hardware may not have this support."); | |
5ba2abeb | 7658 | set_cmd_completer (c, location_completer); |
c906108c | 7659 | |
c94fdfd0 EZ |
7660 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7661 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7662 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7663 | so it will be deleted when hit."); | |
5ba2abeb | 7664 | set_cmd_completer (c, location_completer); |
c906108c SS |
7665 | |
7666 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7667 | "Enable some breakpoints.\n\ | |
7668 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7669 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7670 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7671 | With a subcommand you can enable temporarily.", | |
7672 | &enablelist, "enable ", 1, &cmdlist); | |
7673 | if (xdb_commands) | |
c5aa993b JM |
7674 | add_com ("ab", class_breakpoint, enable_command, |
7675 | "Enable some breakpoints.\n\ | |
c906108c SS |
7676 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7677 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7678 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7679 | With a subcommand you can enable temporarily."); | |
7680 | ||
7681 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7682 | ||
7683 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7684 | "Enable some breakpoints.\n\ |
c906108c SS |
7685 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7686 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7687 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7688 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7689 | |
7690 | add_cmd ("once", no_class, enable_once_command, | |
7691 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7692 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7693 | &enablebreaklist); | |
7694 | ||
7695 | add_cmd ("delete", no_class, enable_delete_command, | |
7696 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7697 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7698 | &enablebreaklist); | |
7699 | ||
7700 | add_cmd ("delete", no_class, enable_delete_command, | |
7701 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7702 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7703 | &enablelist); | |
7704 | ||
7705 | add_cmd ("once", no_class, enable_once_command, | |
7706 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7707 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7708 | &enablelist); | |
7709 | ||
7710 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7711 | "Disable some breakpoints.\n\ |
c906108c SS |
7712 | Arguments are breakpoint numbers with spaces in between.\n\ |
7713 | To disable all breakpoints, give no argument.\n\ | |
7714 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7715 | &disablelist, "disable ", 1, &cmdlist); | |
7716 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7717 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7718 | if (xdb_commands) | |
c5aa993b JM |
7719 | add_com ("sb", class_breakpoint, disable_command, |
7720 | "Disable some breakpoints.\n\ | |
c906108c SS |
7721 | Arguments are breakpoint numbers with spaces in between.\n\ |
7722 | To disable all breakpoints, give no argument.\n\ | |
7723 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7724 | ||
7725 | add_cmd ("breakpoints", class_alias, disable_command, | |
7726 | "Disable some breakpoints.\n\ | |
7727 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7728 | To disable all breakpoints, give no argument.\n\ | |
7729 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7730 | This command may be abbreviated \"disable\".", | |
7731 | &disablelist); | |
7732 | ||
7733 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7734 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7735 | Arguments are breakpoint numbers with spaces in between.\n\ |
7736 | To delete all breakpoints, give no argument.\n\ | |
7737 | \n\ | |
7738 | Also a prefix command for deletion of other GDB objects.\n\ | |
7739 | The \"unset\" command is also an alias for \"delete\".", | |
7740 | &deletelist, "delete ", 1, &cmdlist); | |
7741 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7742 | if (xdb_commands) | |
7743 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7744 | "Delete some breakpoints.\n\ |
c906108c SS |
7745 | Arguments are breakpoint numbers with spaces in between.\n\ |
7746 | To delete all breakpoints, give no argument.\n"); | |
7747 | ||
7748 | add_cmd ("breakpoints", class_alias, delete_command, | |
7749 | "Delete some breakpoints or auto-display expressions.\n\ | |
7750 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7751 | To delete all breakpoints, give no argument.\n\ | |
7752 | This command may be abbreviated \"delete\".", | |
7753 | &deletelist); | |
7754 | ||
7755 | add_com ("clear", class_breakpoint, clear_command, | |
7756 | concat ("Clear breakpoint at specified line or function.\n\ | |
7757 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7758 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7759 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7760 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7761 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7762 | is executing in.\n\ |
7763 | \n\ | |
7764 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7765 | ||
c94fdfd0 EZ |
7766 | c = add_com ("break", class_breakpoint, break_command, |
7767 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7768 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7769 | If line number is specified, break at start of code for that line.\n\ | |
7770 | If function is specified, break at start of code for that function.\n\ | |
7771 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7772 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7773 | This is useful for breaking on return to a stack frame.\n\ |
7774 | \n\ | |
7775 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7776 | \n\ | |
7777 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7778 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7779 | |
c906108c SS |
7780 | add_com_alias ("b", "break", class_run, 1); |
7781 | add_com_alias ("br", "break", class_run, 1); | |
7782 | add_com_alias ("bre", "break", class_run, 1); | |
7783 | add_com_alias ("brea", "break", class_run, 1); | |
7784 | ||
502fd408 | 7785 | if (xdb_commands) |
c906108c SS |
7786 | { |
7787 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7788 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7789 | } |
7790 | ||
7791 | if (dbx_commands) | |
7792 | { | |
c5aa993b JM |
7793 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7794 | "Break in function/address or break at a line in the current file.", | |
7795 | &stoplist, "stop ", 1, &cmdlist); | |
7796 | add_cmd ("in", class_breakpoint, stopin_command, | |
7797 | "Break in function or address.\n", &stoplist); | |
7798 | add_cmd ("at", class_breakpoint, stopat_command, | |
7799 | "Break at a line in the current file.\n", &stoplist); | |
7800 | add_com ("status", class_info, breakpoints_info, | |
7801 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7802 | The \"Type\" column indicates one of:\n\ |
7803 | \tbreakpoint - normal breakpoint\n\ | |
7804 | \twatchpoint - watchpoint\n\ | |
7805 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7806 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7807 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7808 | address and file/line number respectively.\n\n", | |
c5aa993b | 7809 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7810 | are set to the address of the last breakpoint listed.\n\n\ |
7811 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7812 | breakpoint set.", NULL)); | |
7813 | } | |
7814 | ||
7815 | add_info ("breakpoints", breakpoints_info, | |
7816 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7817 | The \"Type\" column indicates one of:\n\ | |
7818 | \tbreakpoint - normal breakpoint\n\ | |
7819 | \twatchpoint - watchpoint\n\ | |
7820 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7821 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7822 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7823 | address and file/line number respectively.\n\n", | |
c5aa993b | 7824 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7825 | are set to the address of the last breakpoint listed.\n\n\ |
7826 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7827 | breakpoint set.", NULL)); | |
7828 | ||
7829 | if (xdb_commands) | |
c5aa993b JM |
7830 | add_com ("lb", class_breakpoint, breakpoints_info, |
7831 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7832 | The \"Type\" column indicates one of:\n\ |
7833 | \tbreakpoint - normal breakpoint\n\ | |
7834 | \twatchpoint - watchpoint\n\ | |
7835 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7836 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7837 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7838 | address and file/line number respectively.\n\n", | |
c5aa993b | 7839 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7840 | are set to the address of the last breakpoint listed.\n\n\ |
7841 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7842 | breakpoint set.", NULL)); | |
7843 | ||
c906108c | 7844 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7845 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7846 | The \"Type\" column indicates one of:\n\ |
7847 | \tbreakpoint - normal breakpoint\n\ | |
7848 | \twatchpoint - watchpoint\n\ | |
7849 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7850 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7851 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7852 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7853 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7854 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7855 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7856 | address and file/line number respectively.\n\n", | |
c5aa993b | 7857 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7858 | are set to the address of the last breakpoint listed.\n\n\ |
7859 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7860 | breakpoint set.", NULL), | |
7861 | &maintenanceinfolist); | |
7862 | ||
c906108c | 7863 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7864 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7865 | Raised signals may be caught:\n\ |
7866 | \tcatch signal - all signals\n\ | |
7867 | \tcatch signal <signame> - a particular signal\n\ | |
7868 | Raised exceptions may be caught:\n\ | |
7869 | \tcatch throw - all exceptions, when thrown\n\ | |
7870 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7871 | \tcatch catch - all exceptions, when caught\n\ | |
7872 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7873 | Thread or process events may be caught:\n\ | |
7874 | \tcatch thread_start - any threads, just after creation\n\ | |
7875 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7876 | \tcatch thread_join - any threads, just after joins\n\ | |
7877 | Process events may be caught:\n\ | |
7878 | \tcatch start - any processes, just after creation\n\ | |
7879 | \tcatch exit - any processes, just before expiration\n\ | |
7880 | \tcatch fork - calls to fork()\n\ | |
7881 | \tcatch vfork - calls to vfork()\n\ | |
7882 | \tcatch exec - calls to exec()\n\ | |
7883 | Dynamically-linked library events may be caught:\n\ | |
7884 | \tcatch load - loads of any library\n\ | |
7885 | \tcatch load <libname> - loads of a particular library\n\ | |
7886 | \tcatch unload - unloads of any library\n\ | |
7887 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7888 | The act of your program's execution stopping may also be caught:\n\ | |
7889 | \tcatch stop\n\n\ | |
7890 | C++ exceptions may be caught:\n\ | |
7891 | \tcatch throw - all exceptions, when thrown\n\ | |
7892 | \tcatch catch - all exceptions, when caught\n\ | |
7893 | \n\ | |
7894 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7895 | after a fork or vfork is caught.\n\n\ | |
7896 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7897 | |
c906108c | 7898 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7899 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7900 | Args like \"catch\" command.\n\ |
7901 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7902 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7903 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 7904 | |
c94fdfd0 EZ |
7905 | c = add_com ("watch", class_breakpoint, watch_command, |
7906 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7907 | A watchpoint stops execution of your program whenever the value of\n\ |
7908 | an expression changes."); | |
5ba2abeb | 7909 | set_cmd_completer (c, location_completer); |
c906108c | 7910 | |
c94fdfd0 EZ |
7911 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
7912 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
7913 | A watchpoint stops execution of your program whenever the value of\n\ |
7914 | an expression is read."); | |
5ba2abeb | 7915 | set_cmd_completer (c, location_completer); |
c906108c | 7916 | |
c94fdfd0 EZ |
7917 | c = add_com ("awatch", class_breakpoint, awatch_command, |
7918 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7919 | A watchpoint stops execution of your program whenever the value of\n\ |
7920 | an expression is either read or written."); | |
5ba2abeb | 7921 | set_cmd_completer (c, location_completer); |
c906108c SS |
7922 | |
7923 | add_info ("watchpoints", breakpoints_info, | |
7924 | "Synonym for ``info breakpoints''."); | |
7925 | ||
7926 | ||
7927 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7928 | (char *) &can_use_hw_watchpoints, |
7929 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7930 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7931 | such is available. (However, any hardware watchpoints that were\n\ | |
7932 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7933 | hardware.)", | |
c5aa993b | 7934 | &setlist); |
cb1a6d5f | 7935 | deprecated_add_show_from_set (c, &showlist); |
c906108c SS |
7936 | |
7937 | can_use_hw_watchpoints = 1; | |
fa8d40ab JJ |
7938 | |
7939 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, "\ | |
7940 | Breakpoint specific settings\n\ | |
7941 | Configure various breakpoint-specific variables such as\n\ | |
7942 | pending breakpoint behavior", | |
7943 | &breakpoint_set_cmdlist, "set breakpoint ", | |
7944 | 0/*allow-unknown*/, &setlist); | |
7945 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, "\ | |
7946 | Breakpoint specific settings\n\ | |
7947 | Configure various breakpoint-specific variables such as\n\ | |
7948 | pending breakpoint behavior", | |
7949 | &breakpoint_show_cmdlist, "show breakpoint ", | |
7950 | 0/*allow-unknown*/, &showlist); | |
7951 | ||
6e1d7d6c | 7952 | add_setshow_auto_boolean_cmd ("pending", no_class, &pending_break_support, "\ |
3b64bf98 AC |
7953 | Set debugger's behavior regarding pending breakpoints.", "\ |
7954 | Show debugger's behavior regarding pending breakpoints.", "\ | |
6e1d7d6c AC |
7955 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
7956 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
7957 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
3b64bf98 AC |
7958 | user-query to see if a pending breakpoint should be created.", "\ |
7959 | Debugger's behavior regarding pending breakpoints is %s.", | |
6e1d7d6c AC |
7960 | NULL, NULL, |
7961 | &breakpoint_set_cmdlist, | |
7962 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
7963 | |
7964 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
c906108c | 7965 | } |