Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
05ff989b | 4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
e74f0f02 | 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" | |
60250e8b | 54 | #include "exceptions.h" |
c906108c | 55 | |
104c1213 JM |
56 | #include "gdb-events.h" |
57 | ||
c906108c SS |
58 | /* Prototypes for local functions. */ |
59 | ||
c2c6d25f JM |
60 | static void until_break_command_continuation (struct continuation_arg *arg); |
61 | ||
a14ed312 | 62 | static void catch_command_1 (char *, int, int); |
c906108c | 63 | |
a14ed312 | 64 | static void enable_delete_command (char *, int); |
c906108c | 65 | |
a14ed312 | 66 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 67 | |
a14ed312 | 68 | static void enable_once_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 71 | |
a14ed312 | 72 | static void disable_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static void enable_command (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 77 | |
a14ed312 | 78 | static void ignore_command (char *, int); |
c906108c | 79 | |
4efb68b1 | 80 | static int breakpoint_re_set_one (void *); |
c906108c | 81 | |
a14ed312 | 82 | static void clear_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void catch_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void watch_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 89 | |
0101ce28 | 90 | static int break_command_1 (char *, int, int, struct breakpoint *); |
c906108c | 91 | |
a14ed312 | 92 | static void mention (struct breakpoint *); |
c906108c | 93 | |
4d28f7a8 | 94 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 95 | |
9f60f21b | 96 | static void check_duplicates (struct breakpoint *); |
c906108c | 97 | |
76897487 KB |
98 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
99 | ||
88f7da05 KB |
100 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
101 | enum bptype bptype); | |
76897487 | 102 | |
a14ed312 | 103 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 104 | |
a14ed312 | 105 | static void breakpoints_info (char *, int); |
c906108c | 106 | |
a14ed312 | 107 | static void breakpoint_1 (int, int); |
c906108c | 108 | |
a14ed312 | 109 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 110 | |
4efb68b1 | 111 | static int breakpoint_cond_eval (void *); |
c906108c | 112 | |
4efb68b1 | 113 | static void cleanup_executing_breakpoints (void *); |
c906108c | 114 | |
a14ed312 | 115 | static void commands_command (char *, int); |
c906108c | 116 | |
a14ed312 | 117 | static void condition_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | static int get_number_trailer (char **, int); |
c906108c | 120 | |
a14ed312 | 121 | void set_breakpoint_count (int); |
c906108c | 122 | |
c5aa993b JM |
123 | typedef enum |
124 | { | |
125 | mark_inserted, | |
126 | mark_uninserted | |
127 | } | |
128 | insertion_state_t; | |
c906108c | 129 | |
0bde7532 | 130 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 131 | |
a14ed312 | 132 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
133 | |
134 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 135 | |
c5aa993b JM |
136 | typedef struct |
137 | { | |
138 | enum exception_event_kind kind; | |
b5de0fa7 | 139 | int enable_p; |
c5aa993b JM |
140 | } |
141 | args_for_catchpoint_enable; | |
c906108c | 142 | |
4efb68b1 | 143 | static int watchpoint_check (void *); |
c906108c | 144 | |
4efb68b1 | 145 | static int cover_target_enable_exception_callback (void *); |
c906108c | 146 | |
a14ed312 | 147 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 148 | |
a14ed312 | 149 | static void create_longjmp_breakpoint (char *); |
c906108c | 150 | |
1900040c MS |
151 | static void create_overlay_event_breakpoint (char *); |
152 | ||
a14ed312 | 153 | static int hw_breakpoint_used_count (void); |
c906108c | 154 | |
a14ed312 | 155 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 156 | |
a14ed312 | 157 | static void hbreak_command (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static void thbreak_command (char *, int); |
c906108c | 160 | |
a14ed312 | 161 | static void watch_command_1 (char *, int, int); |
c906108c | 162 | |
a14ed312 | 163 | static void rwatch_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void awatch_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 168 | |
a14ed312 KB |
169 | static void solib_load_unload_1 (char *hookname, |
170 | int tempflag, | |
171 | char *dll_pathname, | |
172 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 173 | |
a14ed312 KB |
174 | static void create_fork_vfork_event_catchpoint (int tempflag, |
175 | char *cond_string, | |
176 | enum bptype bp_kind); | |
7a292a7a | 177 | |
a14ed312 | 178 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 179 | |
a14ed312 | 180 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 181 | |
a14ed312 | 182 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 183 | |
a14ed312 | 184 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 185 | |
a14ed312 | 186 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 187 | |
a14ed312 | 188 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 189 | |
d85310f7 MS |
190 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
191 | enum exception_event_kind ex_event, | |
192 | struct symtab_and_line *sal); | |
7a292a7a | 193 | |
d85310f7 MS |
194 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
195 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 196 | |
a14ed312 | 197 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 198 | |
a14ed312 | 199 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 200 | |
c906108c SS |
201 | /* Prototypes for exported functions. */ |
202 | ||
c906108c SS |
203 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
204 | if such is available. */ | |
205 | static int can_use_hw_watchpoints; | |
206 | ||
fa8d40ab JJ |
207 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
208 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
209 | for unrecognized breakpoint locations. | |
210 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
211 | static enum auto_boolean pending_break_support; | |
212 | ||
a14ed312 | 213 | void _initialize_breakpoint (void); |
c906108c | 214 | |
c5aa993b | 215 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 216 | |
c906108c SS |
217 | /* Are we executing breakpoint commands? */ |
218 | static int executing_breakpoint_commands; | |
219 | ||
c02f5703 MS |
220 | /* Are overlay event breakpoints enabled? */ |
221 | static int overlay_events_enabled; | |
222 | ||
c906108c SS |
223 | /* Walk the following statement or block through all breakpoints. |
224 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
225 | breakpoint. */ | |
226 | ||
5c44784c | 227 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 228 | |
5c44784c JM |
229 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
230 | for (B = breakpoint_chain; \ | |
231 | B ? (TMP=B->next, 1): 0; \ | |
232 | B = TMP) | |
c906108c | 233 | |
7cc221ef DJ |
234 | /* Similar iterators for the low-level breakpoints. */ |
235 | ||
236 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
237 | ||
238 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
239 | for (B = bp_location_chain; \ | |
240 | B ? (TMP=B->next, 1): 0; \ | |
241 | B = TMP) | |
242 | ||
c906108c SS |
243 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
244 | ||
245 | int show_breakpoint_hit_counts = 1; | |
246 | ||
7cc221ef | 247 | /* Chains of all breakpoints defined. */ |
c906108c SS |
248 | |
249 | struct breakpoint *breakpoint_chain; | |
250 | ||
7cc221ef DJ |
251 | struct bp_location *bp_location_chain; |
252 | ||
c906108c SS |
253 | /* Number of last breakpoint made. */ |
254 | ||
255 | int breakpoint_count; | |
256 | ||
c5aa993b JM |
257 | /* Pointer to current exception event record */ |
258 | static struct exception_event_record *current_exception_event; | |
c906108c | 259 | |
f83f82bc AC |
260 | /* Indicator of whether exception catchpoints should be nuked between |
261 | runs of a program. */ | |
262 | int deprecated_exception_catchpoints_are_fragile = 0; | |
c5aa993b | 263 | |
c906108c | 264 | /* Indicator of when exception catchpoints set-up should be |
f83f82bc AC |
265 | reinitialized -- e.g. when program is re-run. */ |
266 | int deprecated_exception_support_initialized = 0; | |
c906108c SS |
267 | |
268 | /* This function returns a pointer to the string representation of the | |
269 | pathname of the dynamically-linked library that has just been | |
270 | loaded. | |
271 | ||
272 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
273 | or undefined results are guaranteed. | |
274 | ||
275 | This string's contents are only valid immediately after the | |
276 | inferior has stopped in the dynamic linker hook, and becomes | |
277 | invalid as soon as the inferior is continued. Clients should make | |
278 | a copy of this string if they wish to continue the inferior and | |
279 | then access the string. */ | |
280 | ||
281 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
282 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
283 | #endif | |
284 | ||
285 | /* This function returns a pointer to the string representation of the | |
286 | pathname of the dynamically-linked library that has just been | |
287 | unloaded. | |
288 | ||
289 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
290 | TRUE, or undefined results are guaranteed. | |
291 | ||
292 | This string's contents are only valid immediately after the | |
293 | inferior has stopped in the dynamic linker hook, and becomes | |
294 | invalid as soon as the inferior is continued. Clients should make | |
295 | a copy of this string if they wish to continue the inferior and | |
296 | then access the string. */ | |
297 | ||
298 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
299 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
300 | #endif | |
301 | ||
302 | /* This function is called by the "catch load" command. It allows the | |
303 | debugger to be notified by the dynamic linker when a specified | |
304 | library file (or any library file, if filename is NULL) is loaded. */ | |
305 | ||
306 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
307 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
308 | error ("catch of library loads not yet implemented on this platform") | |
309 | #endif | |
310 | ||
311 | /* This function is called by the "catch unload" command. It allows | |
312 | the debugger to be notified by the dynamic linker when a specified | |
313 | library file (or any library file, if filename is NULL) is | |
314 | unloaded. */ | |
315 | ||
316 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
1272ad14 | 317 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \ |
c906108c SS |
318 | error ("catch of library unloads not yet implemented on this platform") |
319 | #endif | |
320 | ||
468d015d JJ |
321 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
322 | static int | |
323 | breakpoint_enabled (struct breakpoint *b) | |
324 | { | |
0101ce28 | 325 | return (b->enable_state == bp_enabled && !b->pending); |
468d015d JJ |
326 | } |
327 | ||
c906108c SS |
328 | /* Set breakpoint count to NUM. */ |
329 | ||
330 | void | |
fba45db2 | 331 | set_breakpoint_count (int num) |
c906108c SS |
332 | { |
333 | breakpoint_count = num; | |
334 | set_internalvar (lookup_internalvar ("bpnum"), | |
335 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
336 | } | |
337 | ||
338 | /* Used in run_command to zero the hit count when a new run starts. */ | |
339 | ||
340 | void | |
fba45db2 | 341 | clear_breakpoint_hit_counts (void) |
c906108c SS |
342 | { |
343 | struct breakpoint *b; | |
344 | ||
345 | ALL_BREAKPOINTS (b) | |
346 | b->hit_count = 0; | |
347 | } | |
348 | ||
349 | /* Default address, symtab and line to put a breakpoint at | |
350 | for "break" command with no arg. | |
351 | if default_breakpoint_valid is zero, the other three are | |
352 | not valid, and "break" with no arg is an error. | |
353 | ||
354 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
355 | ||
356 | int default_breakpoint_valid; | |
357 | CORE_ADDR default_breakpoint_address; | |
358 | struct symtab *default_breakpoint_symtab; | |
359 | int default_breakpoint_line; | |
360 | \f | |
361 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
362 | Advance *PP after the string and any trailing whitespace. | |
363 | ||
364 | Currently the string can either be a number or "$" followed by the name | |
365 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
366 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
367 | ||
368 | TRAILER is a character which can be found after the number; most | |
369 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 370 | static int |
fba45db2 | 371 | get_number_trailer (char **pp, int trailer) |
c906108c | 372 | { |
5c44784c | 373 | int retval = 0; /* default */ |
c906108c SS |
374 | char *p = *pp; |
375 | ||
376 | if (p == NULL) | |
377 | /* Empty line means refer to the last breakpoint. */ | |
378 | return breakpoint_count; | |
379 | else if (*p == '$') | |
380 | { | |
381 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 382 | to pass to lookup_internalvar(). */ |
c906108c SS |
383 | char *varname; |
384 | char *start = ++p; | |
278cd55f | 385 | struct value *val; |
c906108c SS |
386 | |
387 | while (isalnum (*p) || *p == '_') | |
388 | p++; | |
389 | varname = (char *) alloca (p - start + 1); | |
390 | strncpy (varname, start, p - start); | |
391 | varname[p - start] = '\0'; | |
392 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 393 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
394 | retval = (int) value_as_long (val); |
395 | else | |
396 | { | |
397 | printf_filtered ("Convenience variable must have integer value.\n"); | |
398 | retval = 0; | |
399 | } | |
c906108c SS |
400 | } |
401 | else | |
402 | { | |
403 | if (*p == '-') | |
404 | ++p; | |
405 | while (*p >= '0' && *p <= '9') | |
406 | ++p; | |
407 | if (p == *pp) | |
408 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
409 | { |
410 | /* Skip non-numeric token */ | |
411 | while (*p && !isspace((int) *p)) | |
412 | ++p; | |
413 | /* Return zero, which caller must interpret as error. */ | |
414 | retval = 0; | |
415 | } | |
416 | else | |
417 | retval = atoi (*pp); | |
418 | } | |
419 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
420 | { | |
421 | /* Trailing junk: return 0 and let caller print error msg. */ | |
422 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
423 | ++p; | |
424 | retval = 0; | |
c906108c | 425 | } |
c906108c SS |
426 | while (isspace (*p)) |
427 | p++; | |
428 | *pp = p; | |
429 | return retval; | |
430 | } | |
5c44784c | 431 | |
11cf8741 | 432 | |
5c44784c JM |
433 | /* Like get_number_trailer, but don't allow a trailer. */ |
434 | int | |
fba45db2 | 435 | get_number (char **pp) |
5c44784c JM |
436 | { |
437 | return get_number_trailer (pp, '\0'); | |
438 | } | |
439 | ||
440 | /* Parse a number or a range. | |
441 | * A number will be of the form handled by get_number. | |
442 | * A range will be of the form <number1> - <number2>, and | |
443 | * will represent all the integers between number1 and number2, | |
444 | * inclusive. | |
445 | * | |
446 | * While processing a range, this fuction is called iteratively; | |
447 | * At each call it will return the next value in the range. | |
448 | * | |
449 | * At the beginning of parsing a range, the char pointer PP will | |
450 | * be advanced past <number1> and left pointing at the '-' token. | |
451 | * Subsequent calls will not advance the pointer until the range | |
452 | * is completed. The call that completes the range will advance | |
453 | * pointer PP past <number2>. | |
454 | */ | |
455 | ||
456 | int | |
fba45db2 | 457 | get_number_or_range (char **pp) |
5c44784c JM |
458 | { |
459 | static int last_retval, end_value; | |
460 | static char *end_ptr; | |
461 | static int in_range = 0; | |
462 | ||
463 | if (**pp != '-') | |
464 | { | |
465 | /* Default case: pp is pointing either to a solo number, | |
466 | or to the first number of a range. */ | |
467 | last_retval = get_number_trailer (pp, '-'); | |
468 | if (**pp == '-') | |
469 | { | |
470 | char **temp; | |
471 | ||
472 | /* This is the start of a range (<number1> - <number2>). | |
473 | Skip the '-', parse and remember the second number, | |
474 | and also remember the end of the final token. */ | |
475 | ||
476 | temp = &end_ptr; | |
477 | end_ptr = *pp + 1; | |
478 | while (isspace ((int) *end_ptr)) | |
479 | end_ptr++; /* skip white space */ | |
480 | end_value = get_number (temp); | |
481 | if (end_value < last_retval) | |
482 | { | |
483 | error ("inverted range"); | |
484 | } | |
485 | else if (end_value == last_retval) | |
486 | { | |
487 | /* degenerate range (number1 == number2). Advance the | |
488 | token pointer so that the range will be treated as a | |
489 | single number. */ | |
490 | *pp = end_ptr; | |
491 | } | |
492 | else | |
493 | in_range = 1; | |
494 | } | |
495 | } | |
496 | else if (! in_range) | |
497 | error ("negative value"); | |
498 | else | |
499 | { | |
500 | /* pp points to the '-' that betokens a range. All | |
501 | number-parsing has already been done. Return the next | |
502 | integer value (one greater than the saved previous value). | |
503 | Do not advance the token pointer 'pp' until the end of range | |
504 | is reached. */ | |
505 | ||
506 | if (++last_retval == end_value) | |
507 | { | |
508 | /* End of range reached; advance token pointer. */ | |
509 | *pp = end_ptr; | |
510 | in_range = 0; | |
511 | } | |
512 | } | |
513 | return last_retval; | |
514 | } | |
515 | ||
516 | ||
c906108c SS |
517 | \f |
518 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
519 | ||
520 | static void | |
fba45db2 | 521 | condition_command (char *arg, int from_tty) |
c906108c | 522 | { |
52f0bd74 | 523 | struct breakpoint *b; |
c906108c | 524 | char *p; |
52f0bd74 | 525 | int bnum; |
c906108c SS |
526 | |
527 | if (arg == 0) | |
528 | error_no_arg ("breakpoint number"); | |
529 | ||
530 | p = arg; | |
531 | bnum = get_number (&p); | |
5c44784c JM |
532 | if (bnum == 0) |
533 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
534 | |
535 | ALL_BREAKPOINTS (b) | |
536 | if (b->number == bnum) | |
c5aa993b JM |
537 | { |
538 | if (b->cond) | |
539 | { | |
b8c9b27d | 540 | xfree (b->cond); |
c5aa993b JM |
541 | b->cond = 0; |
542 | } | |
543 | if (b->cond_string != NULL) | |
b8c9b27d | 544 | xfree (b->cond_string); |
c906108c | 545 | |
c5aa993b JM |
546 | if (*p == 0) |
547 | { | |
548 | b->cond = 0; | |
549 | b->cond_string = NULL; | |
550 | if (from_tty) | |
551 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
552 | } | |
553 | else | |
554 | { | |
555 | arg = p; | |
556 | /* I don't know if it matters whether this is the string the user | |
557 | typed in or the decompiled expression. */ | |
558 | b->cond_string = savestring (arg, strlen (arg)); | |
0101ce28 JJ |
559 | if (!b->pending) |
560 | { | |
561 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
562 | if (*arg) | |
563 | error ("Junk at end of expression"); | |
564 | } | |
c5aa993b JM |
565 | } |
566 | breakpoints_changed (); | |
221ea385 | 567 | breakpoint_modify_event (b->number); |
c5aa993b JM |
568 | return; |
569 | } | |
c906108c SS |
570 | |
571 | error ("No breakpoint number %d.", bnum); | |
572 | } | |
573 | ||
c906108c | 574 | static void |
fba45db2 | 575 | commands_command (char *arg, int from_tty) |
c906108c | 576 | { |
52f0bd74 | 577 | struct breakpoint *b; |
c906108c | 578 | char *p; |
52f0bd74 | 579 | int bnum; |
c906108c SS |
580 | struct command_line *l; |
581 | ||
582 | /* If we allowed this, we would have problems with when to | |
583 | free the storage, if we change the commands currently | |
584 | being read from. */ | |
585 | ||
586 | if (executing_breakpoint_commands) | |
587 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
588 | ||
589 | p = arg; | |
590 | bnum = get_number (&p); | |
5c44784c | 591 | |
c906108c SS |
592 | if (p && *p) |
593 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 594 | |
c906108c SS |
595 | ALL_BREAKPOINTS (b) |
596 | if (b->number == bnum) | |
9ebf4acf AC |
597 | { |
598 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
599 | bnum); | |
600 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
601 | l = read_command_lines (tmpbuf, from_tty); | |
602 | do_cleanups (cleanups); | |
603 | free_command_lines (&b->commands); | |
604 | b->commands = l; | |
605 | breakpoints_changed (); | |
606 | breakpoint_modify_event (b->number); | |
607 | return; | |
c5aa993b | 608 | } |
c906108c SS |
609 | error ("No breakpoint number %d.", bnum); |
610 | } | |
611 | \f | |
612 | /* Like target_read_memory() but if breakpoints are inserted, return | |
613 | the shadow contents instead of the breakpoints themselves. | |
614 | ||
615 | Read "memory data" from whatever target or inferior we have. | |
616 | Returns zero if successful, errno value if not. EIO is used | |
617 | for address out of bounds. If breakpoints are inserted, returns | |
618 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
619 | ||
620 | int | |
1f602b35 | 621 | deprecated_read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
622 | { |
623 | int status; | |
ffce0d52 | 624 | struct bp_location *b; |
c906108c SS |
625 | CORE_ADDR bp_addr = 0; |
626 | int bp_size = 0; | |
627 | ||
628 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
629 | /* No breakpoints on this machine. */ | |
630 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 631 | |
ffce0d52 | 632 | ALL_BP_LOCATIONS (b) |
c5aa993b | 633 | { |
ffce0d52 DJ |
634 | if (b->owner->type == bp_none) |
635 | warning ("reading through apparently deleted breakpoint #%d?", | |
636 | b->owner->number); | |
637 | ||
638 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 639 | continue; |
ffce0d52 | 640 | if (!b->inserted) |
c5aa993b JM |
641 | continue; |
642 | /* Addresses and length of the part of the breakpoint that | |
643 | we need to copy. */ | |
644 | /* XXXX The m68k, sh and h8300 have different local and remote | |
645 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
646 | correctly determine the breakpoints memory address and size | |
647 | for these targets. */ | |
ffce0d52 | 648 | bp_addr = b->address; |
c5aa993b JM |
649 | bp_size = 0; |
650 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
651 | continue; | |
652 | if (bp_size == 0) | |
653 | /* bp isn't valid */ | |
654 | continue; | |
655 | if (bp_addr + bp_size <= memaddr) | |
656 | /* The breakpoint is entirely before the chunk of memory we | |
657 | are reading. */ | |
658 | continue; | |
659 | if (bp_addr >= memaddr + len) | |
660 | /* The breakpoint is entirely after the chunk of memory we are | |
661 | reading. */ | |
662 | continue; | |
663 | /* Copy the breakpoint from the shadow contents, and recurse for | |
664 | the things before and after. */ | |
c906108c | 665 | { |
c5aa993b JM |
666 | /* Offset within shadow_contents. */ |
667 | int bptoffset = 0; | |
c906108c | 668 | |
c5aa993b JM |
669 | if (bp_addr < memaddr) |
670 | { | |
671 | /* Only copy the second part of the breakpoint. */ | |
672 | bp_size -= memaddr - bp_addr; | |
673 | bptoffset = memaddr - bp_addr; | |
674 | bp_addr = memaddr; | |
675 | } | |
676 | ||
677 | if (bp_addr + bp_size > memaddr + len) | |
678 | { | |
679 | /* Only copy the first part of the breakpoint. */ | |
680 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
681 | } | |
682 | ||
683 | memcpy (myaddr + bp_addr - memaddr, | |
ffce0d52 | 684 | b->shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
685 | |
686 | if (bp_addr > memaddr) | |
687 | { | |
688 | /* Copy the section of memory before the breakpoint. */ | |
1f602b35 | 689 | status = deprecated_read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); |
c5aa993b JM |
690 | if (status != 0) |
691 | return status; | |
692 | } | |
693 | ||
694 | if (bp_addr + bp_size < memaddr + len) | |
695 | { | |
696 | /* Copy the section of memory after the breakpoint. */ | |
1f602b35 | 697 | status = deprecated_read_memory_nobpt (bp_addr + bp_size, |
d85310f7 MS |
698 | myaddr + bp_addr + bp_size - memaddr, |
699 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
700 | if (status != 0) |
701 | return status; | |
702 | } | |
703 | return 0; | |
c906108c | 704 | } |
c5aa993b | 705 | } |
c906108c SS |
706 | /* Nothing overlaps. Just call read_memory_noerr. */ |
707 | return target_read_memory (memaddr, myaddr, len); | |
708 | } | |
c906108c | 709 | \f |
c5aa993b | 710 | |
687595f9 | 711 | /* A wrapper function for inserting catchpoints. */ |
3f8091c1 | 712 | static int |
687595f9 DJ |
713 | insert_catchpoint (struct ui_out *uo, void *args) |
714 | { | |
715 | struct breakpoint *b = (struct breakpoint *) args; | |
716 | int val = -1; | |
717 | ||
718 | switch (b->type) | |
719 | { | |
720 | case bp_catch_fork: | |
721 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
722 | break; | |
723 | case bp_catch_vfork: | |
724 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
725 | break; | |
726 | case bp_catch_exec: | |
727 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); | |
728 | break; | |
729 | default: | |
1171114a | 730 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); |
687595f9 DJ |
731 | break; |
732 | } | |
733 | ||
734 | if (val < 0) | |
2a78bfb5 | 735 | throw_reason (RETURN_ERROR); |
687595f9 DJ |
736 | |
737 | return 0; | |
738 | } | |
739 | ||
7270d8f2 OF |
740 | /* Helper routine: free the value chain for a breakpoint (watchpoint). */ |
741 | ||
742 | static void free_valchain (struct bp_location *b) | |
743 | { | |
744 | struct value *v; | |
745 | struct value *n; | |
746 | ||
747 | /* Free the saved value chain. We will construct a new one | |
748 | the next time the watchpoint is inserted. */ | |
749 | for (v = b->owner->val_chain; v; v = n) | |
750 | { | |
751 | n = v->next; | |
752 | value_free (v); | |
753 | } | |
754 | b->owner->val_chain = NULL; | |
755 | } | |
756 | ||
879bfdc2 DJ |
757 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
758 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
759 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
760 | ||
761 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
762 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 763 | static int |
879bfdc2 | 764 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
765 | struct ui_file *tmp_error_stream, |
766 | int *disabled_breaks, int *process_warning, | |
767 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
768 | { |
769 | int val = 0; | |
770 | ||
771 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
772 | breakpoints should not be inserted. */ | |
468d015d | 773 | if (!breakpoint_enabled (bpt->owner)) |
879bfdc2 DJ |
774 | return 0; |
775 | ||
776 | if (bpt->inserted || bpt->duplicate) | |
777 | return 0; | |
778 | ||
779 | if (bpt->loc_type == bp_loc_software_breakpoint | |
780 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
781 | { | |
782 | /* First check to see if we have to handle an overlay. */ | |
783 | if (overlay_debugging == ovly_off | |
784 | || bpt->section == NULL | |
785 | || !(section_is_overlay (bpt->section))) | |
786 | { | |
787 | /* No overlay handling: just set the breakpoint. */ | |
788 | ||
789 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
790 | val = target_insert_hw_breakpoint (bpt->address, | |
791 | bpt->shadow_contents); | |
792 | else | |
793 | val = target_insert_breakpoint (bpt->address, | |
794 | bpt->shadow_contents); | |
795 | } | |
796 | else | |
797 | { | |
798 | /* This breakpoint is in an overlay section. | |
799 | Shall we set a breakpoint at the LMA? */ | |
800 | if (!overlay_events_enabled) | |
801 | { | |
802 | /* Yes -- overlay event support is not active, | |
803 | so we must try to set a breakpoint at the LMA. | |
804 | This will not work for a hardware breakpoint. */ | |
805 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
806 | warning ("hardware breakpoint %d not supported in overlay!\n", | |
807 | bpt->owner->number); | |
808 | else | |
809 | { | |
810 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
811 | bpt->section); | |
812 | /* Set a software (trap) breakpoint at the LMA. */ | |
813 | val = target_insert_breakpoint (addr, bpt->shadow_contents); | |
814 | if (val != 0) | |
815 | fprintf_unfiltered (tmp_error_stream, | |
816 | "Overlay breakpoint %d failed: in ROM?", | |
817 | bpt->owner->number); | |
818 | } | |
819 | } | |
820 | /* Shall we set a breakpoint at the VMA? */ | |
821 | if (section_is_mapped (bpt->section)) | |
822 | { | |
823 | /* Yes. This overlay section is mapped into memory. */ | |
824 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
825 | val = target_insert_hw_breakpoint (bpt->address, | |
826 | bpt->shadow_contents); | |
827 | else | |
828 | val = target_insert_breakpoint (bpt->address, | |
829 | bpt->shadow_contents); | |
830 | } | |
831 | else | |
832 | { | |
833 | /* No. This breakpoint will not be inserted. | |
834 | No error, but do not mark the bp as 'inserted'. */ | |
835 | return 0; | |
836 | } | |
837 | } | |
838 | ||
839 | if (val) | |
840 | { | |
841 | /* Can't set the breakpoint. */ | |
842 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
843 | if (DISABLE_UNSETTABLE_BREAK (bpt->address)) | |
844 | { | |
845 | /* See also: disable_breakpoints_in_shlibs. */ | |
846 | val = 0; | |
847 | bpt->owner->enable_state = bp_shlib_disabled; | |
848 | if (!*disabled_breaks) | |
849 | { | |
850 | fprintf_unfiltered (tmp_error_stream, | |
851 | "Cannot insert breakpoint %d.\n", | |
852 | bpt->owner->number); | |
853 | fprintf_unfiltered (tmp_error_stream, | |
854 | "Temporarily disabling shared library breakpoints:\n"); | |
855 | } | |
856 | *disabled_breaks = 1; | |
857 | fprintf_unfiltered (tmp_error_stream, | |
858 | "breakpoint #%d\n", bpt->owner->number); | |
859 | } | |
860 | else | |
861 | #endif | |
862 | { | |
863 | #ifdef ONE_PROCESS_WRITETEXT | |
864 | *process_warning = 1; | |
865 | #endif | |
866 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
867 | { | |
868 | *hw_breakpoint_error = 1; | |
869 | fprintf_unfiltered (tmp_error_stream, | |
870 | "Cannot insert hardware breakpoint %d.\n", | |
871 | bpt->owner->number); | |
872 | } | |
873 | else | |
874 | { | |
875 | fprintf_unfiltered (tmp_error_stream, | |
876 | "Cannot insert breakpoint %d.\n", | |
877 | bpt->owner->number); | |
878 | fprintf_filtered (tmp_error_stream, | |
879 | "Error accessing memory address "); | |
880 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
881 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
882 | safe_strerror (val)); | |
883 | } | |
884 | ||
885 | } | |
886 | } | |
887 | else | |
888 | bpt->inserted = 1; | |
889 | ||
890 | return val; | |
891 | } | |
892 | ||
893 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
894 | /* NOTE drow/2003-09-08: This state only exists for removing | |
895 | watchpoints. It's not clear that it's necessary... */ | |
896 | && bpt->owner->disposition != disp_del_at_next_stop) | |
897 | { | |
898 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
899 | based on the expression. Ideally this should happen at a higher level, | |
900 | and there should be one bp_location for each computed address we | |
901 | must watch. As soon as a many-to-one mapping is available I'll | |
902 | convert this. */ | |
903 | ||
7789d0fa | 904 | int within_current_scope; |
879bfdc2 DJ |
905 | struct value *mark = value_mark (); |
906 | struct value *v; | |
7789d0fa | 907 | struct frame_id saved_frame_id; |
879bfdc2 | 908 | |
7789d0fa | 909 | /* Save the current frame's ID so we can restore it after |
879bfdc2 DJ |
910 | evaluating the watchpoint expression on its own frame. */ |
911 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
912 | took a frame parameter, so that we didn't have to change the | |
913 | selected frame. */ | |
7789d0fa | 914 | saved_frame_id = get_frame_id (deprecated_selected_frame); |
879bfdc2 DJ |
915 | |
916 | /* Determine if the watchpoint is within scope. */ | |
917 | if (bpt->owner->exp_valid_block == NULL) | |
918 | within_current_scope = 1; | |
919 | else | |
920 | { | |
921 | struct frame_info *fi; | |
922 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
923 | within_current_scope = (fi != NULL); | |
924 | if (within_current_scope) | |
925 | select_frame (fi); | |
926 | } | |
927 | ||
928 | if (within_current_scope) | |
929 | { | |
7270d8f2 OF |
930 | free_valchain (bpt); |
931 | ||
879bfdc2 DJ |
932 | /* Evaluate the expression and cut the chain of values |
933 | produced off from the value chain. | |
934 | ||
935 | Make sure the value returned isn't lazy; we use | |
936 | laziness to determine what memory GDB actually needed | |
937 | in order to compute the value of the expression. */ | |
938 | v = evaluate_expression (bpt->owner->exp); | |
939 | VALUE_CONTENTS (v); | |
940 | value_release_to_mark (mark); | |
941 | ||
942 | bpt->owner->val_chain = v; | |
943 | bpt->inserted = 1; | |
944 | ||
945 | /* Look at each value on the value chain. */ | |
946 | for (; v; v = v->next) | |
947 | { | |
948 | /* If it's a memory location, and GDB actually needed | |
949 | its contents to evaluate the expression, then we | |
950 | must watch it. */ | |
951 | if (VALUE_LVAL (v) == lval_memory | |
952 | && ! VALUE_LAZY (v)) | |
953 | { | |
df407dfe | 954 | struct type *vtype = check_typedef (value_type (v)); |
879bfdc2 DJ |
955 | |
956 | /* We only watch structs and arrays if user asked | |
957 | for it explicitly, never if they just happen to | |
958 | appear in the middle of some value chain. */ | |
959 | if (v == bpt->owner->val_chain | |
960 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
961 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
962 | { | |
963 | CORE_ADDR addr; | |
964 | int len, type; | |
965 | ||
df407dfe AC |
966 | addr = VALUE_ADDRESS (v) + value_offset (v); |
967 | len = TYPE_LENGTH (value_type (v)); | |
879bfdc2 DJ |
968 | type = hw_write; |
969 | if (bpt->owner->type == bp_read_watchpoint) | |
970 | type = hw_read; | |
971 | else if (bpt->owner->type == bp_access_watchpoint) | |
972 | type = hw_access; | |
973 | ||
974 | val = target_insert_watchpoint (addr, len, type); | |
975 | if (val == -1) | |
976 | { | |
977 | /* Don't exit the loop, try to insert | |
978 | every value on the value chain. That's | |
979 | because we will be removing all the | |
980 | watches below, and removing a | |
981 | watchpoint we didn't insert could have | |
982 | adverse effects. */ | |
983 | bpt->inserted = 0; | |
984 | } | |
985 | val = 0; | |
986 | } | |
987 | } | |
988 | } | |
989 | /* Failure to insert a watchpoint on any memory value in the | |
990 | value chain brings us here. */ | |
991 | if (!bpt->inserted) | |
992 | { | |
0bde7532 | 993 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
994 | *hw_breakpoint_error = 1; |
995 | fprintf_unfiltered (tmp_error_stream, | |
996 | "Could not insert hardware watchpoint %d.\n", | |
997 | bpt->owner->number); | |
998 | val = -1; | |
999 | } | |
1000 | } | |
1001 | else | |
1002 | { | |
1003 | printf_filtered ("Hardware watchpoint %d deleted ", bpt->owner->number); | |
1004 | printf_filtered ("because the program has left the block \n"); | |
1005 | printf_filtered ("in which its expression is valid.\n"); | |
1006 | if (bpt->owner->related_breakpoint) | |
1007 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
1008 | bpt->owner->disposition = disp_del_at_next_stop; | |
1009 | } | |
1010 | ||
7789d0fa AC |
1011 | /* Restore the selected frame. */ |
1012 | select_frame (frame_find_by_id (saved_frame_id)); | |
879bfdc2 DJ |
1013 | |
1014 | return val; | |
1015 | } | |
1016 | ||
1017 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
1018 | { | |
1019 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1020 | breakpoint. Once again, it would be better if this was represented | |
1021 | as two bp_locations. */ | |
1022 | ||
1023 | /* If we get here, we must have a callback mechanism for exception | |
1024 | events -- with g++ style embedded label support, we insert | |
1025 | ordinary breakpoints and not catchpoints. */ | |
1026 | val = target_insert_breakpoint (bpt->address, bpt->shadow_contents); | |
1027 | if (val) | |
1028 | { | |
1029 | /* Couldn't set breakpoint for some reason */ | |
1030 | fprintf_unfiltered (tmp_error_stream, | |
1031 | "Cannot insert catchpoint %d; disabling it.\n", | |
1032 | bpt->owner->number); | |
1033 | fprintf_filtered (tmp_error_stream, | |
1034 | "Error accessing memory address "); | |
1035 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
1036 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
1037 | safe_strerror (val)); | |
1038 | bpt->owner->enable_state = bp_disabled; | |
1039 | } | |
1040 | else | |
1041 | { | |
1042 | /* Bp set, now make sure callbacks are enabled */ | |
1043 | /* Format possible error msg */ | |
1044 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1045 | bpt->owner->number); | |
1046 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1047 | int val; | |
1048 | args_for_catchpoint_enable args; | |
1049 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1050 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1051 | args.enable_p = 1; | |
1052 | val = catch_errors (cover_target_enable_exception_callback, | |
1053 | &args, message, RETURN_MASK_ALL); | |
1054 | do_cleanups (cleanups); | |
1055 | if (val != 0 && val != -1) | |
1056 | bpt->inserted = 1; | |
1057 | ||
1058 | /* Check if something went wrong; val == 0 can be ignored */ | |
1059 | if (val == -1) | |
1060 | { | |
1061 | /* something went wrong */ | |
1062 | fprintf_unfiltered (tmp_error_stream, | |
1063 | "Cannot insert catchpoint %d; disabling it.\n", | |
1064 | bpt->owner->number); | |
1065 | bpt->owner->enable_state = bp_disabled; | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | return val; | |
1070 | } | |
1071 | ||
1072 | else if (bpt->owner->type == bp_catch_fork | |
1073 | || bpt->owner->type == bp_catch_vfork | |
1074 | || bpt->owner->type == bp_catch_exec) | |
1075 | { | |
1076 | char *prefix = xstrprintf ("warning: inserting catchpoint %d: ", | |
1077 | bpt->owner->number); | |
1078 | struct cleanup *cleanups = make_cleanup (xfree, prefix); | |
1079 | val = catch_exceptions (uiout, insert_catchpoint, bpt->owner, prefix, | |
1080 | RETURN_MASK_ERROR); | |
1081 | do_cleanups (cleanups); | |
1082 | if (val < 0) | |
1083 | bpt->owner->enable_state = bp_disabled; | |
1084 | else | |
1085 | bpt->inserted = 1; | |
1640b821 DJ |
1086 | |
1087 | /* We've already printed an error message if there was a problem | |
1088 | inserting this catchpoint, and we've disabled the catchpoint, | |
1089 | so just return success. */ | |
1090 | return 0; | |
879bfdc2 DJ |
1091 | } |
1092 | ||
1093 | return 0; | |
1094 | } | |
1095 | ||
c906108c SS |
1096 | /* insert_breakpoints is used when starting or continuing the program. |
1097 | remove_breakpoints is used when the program stops. | |
1098 | Both return zero if successful, | |
1099 | or an `errno' value if could not write the inferior. */ | |
1100 | ||
1101 | int | |
fba45db2 | 1102 | insert_breakpoints (void) |
c906108c | 1103 | { |
879bfdc2 | 1104 | struct bp_location *b, *temp; |
53a5351d | 1105 | int return_val = 0; /* return success code. */ |
c906108c SS |
1106 | int val = 0; |
1107 | int disabled_breaks = 0; | |
81d0cc19 GS |
1108 | int hw_breakpoint_error = 0; |
1109 | int process_warning = 0; | |
c906108c | 1110 | |
81d0cc19 GS |
1111 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1112 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1113 | ||
1114 | /* Explicitly mark the warning -- this will only be printed if | |
1115 | there was an error. */ | |
1116 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1117 | |
879bfdc2 DJ |
1118 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1119 | { | |
1120 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1121 | breakpoints should not be inserted. */ | |
468d015d | 1122 | if (!breakpoint_enabled (b->owner)) |
879bfdc2 DJ |
1123 | continue; |
1124 | ||
1125 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when | |
1126 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1127 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1128 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1129 | { | |
1130 | struct value *val; | |
1131 | val = evaluate_expression (b->owner->exp); | |
1132 | release_value (val); | |
1133 | if (VALUE_LAZY (val)) | |
1134 | value_fetch_lazy (val); | |
1135 | b->owner->val = val; | |
1136 | } | |
a881cf8e | 1137 | |
879bfdc2 DJ |
1138 | val = insert_bp_location (b, tmp_error_stream, |
1139 | &disabled_breaks, &process_warning, | |
1140 | &hw_breakpoint_error); | |
1141 | if (val) | |
1142 | return_val = val; | |
1143 | } | |
c906108c | 1144 | |
879bfdc2 | 1145 | if (return_val) |
81d0cc19 GS |
1146 | { |
1147 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1148 | message about possibly exhausted resources. */ | |
879bfdc2 | 1149 | if (hw_breakpoint_error) |
81d0cc19 | 1150 | { |
c6510018 MS |
1151 | fprintf_unfiltered (tmp_error_stream, |
1152 | "Could not insert hardware breakpoints:\n\ | |
1153 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1154 | } |
c6510018 | 1155 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1156 | if (process_warning) |
c6510018 MS |
1157 | fprintf_unfiltered (tmp_error_stream, |
1158 | "The same program may be running in another process."); | |
1159 | #endif | |
81d0cc19 GS |
1160 | target_terminal_ours_for_output (); |
1161 | error_stream (tmp_error_stream); | |
1162 | } | |
53a5351d | 1163 | return return_val; |
c906108c SS |
1164 | } |
1165 | ||
c906108c | 1166 | int |
fba45db2 | 1167 | remove_breakpoints (void) |
c906108c | 1168 | { |
0bde7532 | 1169 | struct bp_location *b; |
c906108c SS |
1170 | int val; |
1171 | ||
0bde7532 | 1172 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1173 | { |
0bde7532 | 1174 | if (b->inserted) |
c5aa993b JM |
1175 | { |
1176 | val = remove_breakpoint (b, mark_uninserted); | |
1177 | if (val != 0) | |
1178 | return val; | |
1179 | } | |
1180 | } | |
c906108c SS |
1181 | return 0; |
1182 | } | |
1183 | ||
692590c1 | 1184 | int |
80ce1ecb | 1185 | remove_hw_watchpoints (void) |
692590c1 | 1186 | { |
0bde7532 | 1187 | struct bp_location *b; |
692590c1 MS |
1188 | int val; |
1189 | ||
0bde7532 | 1190 | ALL_BP_LOCATIONS (b) |
692590c1 | 1191 | { |
0bde7532 | 1192 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1193 | { |
1194 | val = remove_breakpoint (b, mark_uninserted); | |
1195 | if (val != 0) | |
1196 | return val; | |
1197 | } | |
1198 | } | |
1199 | return 0; | |
1200 | } | |
1201 | ||
c906108c | 1202 | int |
fba45db2 | 1203 | reattach_breakpoints (int pid) |
c906108c | 1204 | { |
0bde7532 | 1205 | struct bp_location *b; |
c906108c | 1206 | int val; |
ce696e05 | 1207 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1208 | |
ce696e05 KB |
1209 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1210 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1211 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1212 | { |
0bde7532 | 1213 | if (b->inserted) |
c5aa993b JM |
1214 | { |
1215 | remove_breakpoint (b, mark_inserted); | |
0bde7532 DJ |
1216 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1217 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
c5aa993b | 1218 | else |
0bde7532 DJ |
1219 | val = target_insert_breakpoint (b->address, b->shadow_contents); |
1220 | /* FIXME drow/2003-10-07: This doesn't handle any other kinds of | |
1221 | breakpoints. It's wrong for watchpoints, for example. */ | |
c5aa993b JM |
1222 | if (val != 0) |
1223 | { | |
ce696e05 | 1224 | do_cleanups (old_chain); |
c5aa993b JM |
1225 | return val; |
1226 | } | |
1227 | } | |
1228 | } | |
ce696e05 | 1229 | do_cleanups (old_chain); |
c906108c SS |
1230 | return 0; |
1231 | } | |
1232 | ||
1233 | void | |
fba45db2 | 1234 | update_breakpoints_after_exec (void) |
c906108c | 1235 | { |
c5aa993b JM |
1236 | struct breakpoint *b; |
1237 | struct breakpoint *temp; | |
c906108c SS |
1238 | |
1239 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1240 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1241 | shadow is NOT valid after an exec()! */ | |
1242 | mark_breakpoints_out (); | |
1243 | ||
1244 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1245 | { |
1246 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1247 | if (b->type == bp_shlib_event) | |
1248 | { | |
1249 | delete_breakpoint (b); | |
1250 | continue; | |
1251 | } | |
c906108c | 1252 | |
1900040c MS |
1253 | /* Thread event breakpoints must be set anew after an exec(), |
1254 | as must overlay event breakpoints. */ | |
1255 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1256 | { |
1257 | delete_breakpoint (b); | |
1258 | continue; | |
1259 | } | |
1260 | ||
c5aa993b JM |
1261 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1262 | if (b->type == bp_step_resume) | |
1263 | { | |
1264 | delete_breakpoint (b); | |
1265 | continue; | |
1266 | } | |
1267 | ||
1268 | /* Ditto the sigtramp handler breakpoints. */ | |
1269 | if (b->type == bp_through_sigtramp) | |
1270 | { | |
1271 | delete_breakpoint (b); | |
1272 | continue; | |
1273 | } | |
1274 | ||
1275 | /* Ditto the exception-handling catchpoints. */ | |
1276 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1277 | { | |
1278 | delete_breakpoint (b); | |
1279 | continue; | |
1280 | } | |
1281 | ||
1282 | /* Don't delete an exec catchpoint, because else the inferior | |
1283 | won't stop when it ought! | |
1284 | ||
1285 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1286 | on this target, we may not be able to stop when the vfork is |
1287 | seen, but only when the subsequent exec is seen. (And because | |
1288 | deleting fork catchpoints here but not vfork catchpoints will | |
1289 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1290 | |
1291 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1292 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1293 | automagically. Certainly on HP-UX that's true. |
1294 | ||
1295 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
41989fcd AC |
1296 | valid code address on some platforms (like the mn10300 |
1297 | simulators). We shouldn't assign any special interpretation to | |
1298 | a breakpoint with a zero address. And in fact, GDB doesn't --- | |
1299 | I can't see what that comment above is talking about. As far | |
1300 | as I can tell, setting the address of a | |
644a1fe1 JB |
1301 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero |
1302 | is meaningless, since those are implemented with HP-UX kernel | |
1303 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1304 | if ((b->type == bp_catch_exec) || |
1305 | (b->type == bp_catch_vfork) || | |
1306 | (b->type == bp_catch_fork)) | |
1307 | { | |
5cab636d | 1308 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b JM |
1309 | continue; |
1310 | } | |
1311 | ||
1312 | /* bp_finish is a special case. The only way we ought to be able | |
1313 | to see one of these when an exec() has happened, is if the user | |
1314 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1315 | carries them to the call-site of the current callee, by setting | |
1316 | a temporary bp there and resuming. But in this case, the finish | |
1317 | will carry them entirely through the vfork & exec. | |
1318 | ||
1319 | We don't want to allow a bp_finish to remain inserted now. But | |
1320 | we can't safely delete it, 'cause finish_command has a handle to | |
1321 | the bp on a bpstat, and will later want to delete it. There's a | |
1322 | chance (and I've seen it happen) that if we delete the bp_finish | |
1323 | here, that its storage will get reused by the time finish_command | |
1324 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1325 | We really must allow finish_command to delete a bp_finish. | |
1326 | ||
53a5351d JM |
1327 | In the absense of a general solution for the "how do we know |
1328 | it's safe to delete something others may have handles to?" | |
1329 | problem, what we'll do here is just uninsert the bp_finish, and | |
1330 | let finish_command delete it. | |
1331 | ||
1332 | (We know the bp_finish is "doomed" in the sense that it's | |
1333 | momentary, and will be deleted as soon as finish_command sees | |
1334 | the inferior stopped. So it doesn't matter that the bp's | |
1335 | address is probably bogus in the new a.out, unlike e.g., the | |
1336 | solib breakpoints.) */ | |
c5aa993b | 1337 | |
c5aa993b JM |
1338 | if (b->type == bp_finish) |
1339 | { | |
1340 | continue; | |
1341 | } | |
1342 | ||
1343 | /* Without a symbolic address, we have little hope of the | |
1344 | pre-exec() address meaning the same thing in the post-exec() | |
1345 | a.out. */ | |
1346 | if (b->addr_string == NULL) | |
1347 | { | |
1348 | delete_breakpoint (b); | |
1349 | continue; | |
1350 | } | |
1351 | ||
1352 | /* If this breakpoint has survived the above battery of checks, then | |
1353 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1354 | to a target address, rather than reusing the old evaluation. |
1355 | ||
1356 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1357 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1358 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1359 | the breakpoint's address from scratch, or deletes it if it can't. | |
1360 | So I think this assignment could be deleted without effect. */ | |
5cab636d | 1361 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b | 1362 | } |
1900040c MS |
1363 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1364 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1365 | } |
1366 | ||
1367 | int | |
fba45db2 | 1368 | detach_breakpoints (int pid) |
c906108c | 1369 | { |
0bde7532 | 1370 | struct bp_location *b; |
c906108c | 1371 | int val; |
ce696e05 | 1372 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1373 | |
39f77062 KB |
1374 | if (pid == PIDGET (inferior_ptid)) |
1375 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1376 | |
ce696e05 KB |
1377 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1378 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1379 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1380 | { |
0bde7532 | 1381 | if (b->inserted) |
c5aa993b JM |
1382 | { |
1383 | val = remove_breakpoint (b, mark_inserted); | |
1384 | if (val != 0) | |
1385 | { | |
ce696e05 | 1386 | do_cleanups (old_chain); |
c5aa993b JM |
1387 | return val; |
1388 | } | |
1389 | } | |
1390 | } | |
ce696e05 | 1391 | do_cleanups (old_chain); |
c906108c SS |
1392 | return 0; |
1393 | } | |
1394 | ||
1395 | static int | |
0bde7532 | 1396 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1397 | { |
1398 | int val; | |
c5aa993b | 1399 | |
0bde7532 | 1400 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1401 | /* Permanent breakpoints cannot be inserted or removed. */ |
1402 | return 0; | |
1403 | ||
0bde7532 | 1404 | if (b->owner->type == bp_none) |
53a5351d | 1405 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
0bde7532 DJ |
1406 | b->owner->number); |
1407 | ||
1408 | if (b->loc_type == bp_loc_software_breakpoint | |
1409 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1410 | { |
c02f5703 MS |
1411 | /* "Normal" instruction breakpoint: either the standard |
1412 | trap-instruction bp (bp_breakpoint), or a | |
1413 | bp_hardware_breakpoint. */ | |
1414 | ||
1415 | /* First check to see if we have to handle an overlay. */ | |
1416 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1417 | || b->section == NULL |
1418 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1419 | { |
1420 | /* No overlay handling: just remove the breakpoint. */ | |
1421 | ||
0bde7532 DJ |
1422 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1423 | val = target_remove_hw_breakpoint (b->address, | |
1424 | b->shadow_contents); | |
c02f5703 | 1425 | else |
0bde7532 | 1426 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c02f5703 | 1427 | } |
c906108c SS |
1428 | else |
1429 | { | |
c02f5703 MS |
1430 | /* This breakpoint is in an overlay section. |
1431 | Did we set a breakpoint at the LMA? */ | |
1432 | if (!overlay_events_enabled) | |
1433 | { | |
1434 | /* Yes -- overlay event support is not active, so we | |
1435 | should have set a breakpoint at the LMA. Remove it. | |
1436 | */ | |
0bde7532 DJ |
1437 | CORE_ADDR addr = overlay_unmapped_address (b->address, |
1438 | b->section); | |
c02f5703 MS |
1439 | /* Ignore any failures: if the LMA is in ROM, we will |
1440 | have already warned when we failed to insert it. */ | |
0bde7532 DJ |
1441 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1442 | target_remove_hw_breakpoint (addr, b->shadow_contents); | |
c02f5703 | 1443 | else |
0bde7532 | 1444 | target_remove_breakpoint (addr, b->shadow_contents); |
c02f5703 MS |
1445 | } |
1446 | /* Did we set a breakpoint at the VMA? | |
1447 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1448 | if (b->inserted) |
c906108c | 1449 | { |
c02f5703 MS |
1450 | /* Yes -- remove it. Previously we did not bother to |
1451 | remove the breakpoint if the section had been | |
1452 | unmapped, but let's not rely on that being safe. We | |
1453 | don't know what the overlay manager might do. */ | |
0bde7532 DJ |
1454 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1455 | val = target_remove_hw_breakpoint (b->address, | |
1456 | b->shadow_contents); | |
c02f5703 | 1457 | else |
0bde7532 DJ |
1458 | val = target_remove_breakpoint (b->address, |
1459 | b->shadow_contents); | |
c906108c | 1460 | } |
c02f5703 MS |
1461 | else |
1462 | { | |
1463 | /* No -- not inserted, so no need to remove. No error. */ | |
1464 | val = 0; | |
1465 | } | |
c906108c SS |
1466 | } |
1467 | if (val) | |
1468 | return val; | |
0bde7532 | 1469 | b->inserted = (is == mark_inserted); |
c906108c | 1470 | } |
0bde7532 | 1471 | else if (b->loc_type == bp_loc_hardware_watchpoint |
468d015d | 1472 | && breakpoint_enabled (b->owner) |
0bde7532 | 1473 | && !b->duplicate) |
c906108c | 1474 | { |
278cd55f AC |
1475 | struct value *v; |
1476 | struct value *n; | |
c5aa993b | 1477 | |
0bde7532 | 1478 | b->inserted = (is == mark_inserted); |
c906108c | 1479 | /* Walk down the saved value chain. */ |
0bde7532 | 1480 | for (v = b->owner->val_chain; v; v = v->next) |
c906108c SS |
1481 | { |
1482 | /* For each memory reference remove the watchpoint | |
1483 | at that address. */ | |
5c44784c JM |
1484 | if (VALUE_LVAL (v) == lval_memory |
1485 | && ! VALUE_LAZY (v)) | |
c906108c | 1486 | { |
df407dfe | 1487 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 | 1488 | |
0bde7532 | 1489 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1490 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1491 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1492 | { | |
1493 | CORE_ADDR addr; | |
1494 | int len, type; | |
1495 | ||
df407dfe AC |
1496 | addr = VALUE_ADDRESS (v) + value_offset (v); |
1497 | len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 1498 | type = hw_write; |
0bde7532 | 1499 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1500 | type = hw_read; |
0bde7532 | 1501 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1502 | type = hw_access; |
1503 | ||
1504 | val = target_remove_watchpoint (addr, len, type); | |
1505 | if (val == -1) | |
0bde7532 | 1506 | b->inserted = 1; |
2e70b7b9 MS |
1507 | val = 0; |
1508 | } | |
c906108c SS |
1509 | } |
1510 | } | |
1511 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1512 | if ((is == mark_uninserted) && (b->inserted)) |
53a5351d | 1513 | warning ("Could not remove hardware watchpoint %d.", |
0bde7532 | 1514 | b->owner->number); |
c906108c | 1515 | } |
0bde7532 DJ |
1516 | else if ((b->owner->type == bp_catch_fork || |
1517 | b->owner->type == bp_catch_vfork || | |
1518 | b->owner->type == bp_catch_exec) | |
468d015d | 1519 | && breakpoint_enabled (b->owner) |
0bde7532 | 1520 | && !b->duplicate) |
c906108c SS |
1521 | { |
1522 | val = -1; | |
0bde7532 | 1523 | switch (b->owner->type) |
c5aa993b JM |
1524 | { |
1525 | case bp_catch_fork: | |
39f77062 | 1526 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1527 | break; |
1528 | case bp_catch_vfork: | |
39f77062 | 1529 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1530 | break; |
1531 | case bp_catch_exec: | |
39f77062 | 1532 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1533 | break; |
ac9a91a7 | 1534 | default: |
53a5351d | 1535 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1536 | break; |
c5aa993b | 1537 | } |
c906108c SS |
1538 | if (val) |
1539 | return val; | |
0bde7532 | 1540 | b->inserted = (is == mark_inserted); |
c906108c | 1541 | } |
0bde7532 DJ |
1542 | else if ((b->owner->type == bp_catch_catch || |
1543 | b->owner->type == bp_catch_throw) | |
468d015d | 1544 | && breakpoint_enabled (b->owner) |
0bde7532 | 1545 | && !b->duplicate) |
c906108c SS |
1546 | { |
1547 | ||
0bde7532 | 1548 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1549 | if (val) |
c5aa993b | 1550 | return val; |
0bde7532 | 1551 | b->inserted = (is == mark_inserted); |
c906108c | 1552 | } |
0bde7532 DJ |
1553 | else if (ep_is_exception_catchpoint (b->owner) |
1554 | && b->inserted /* sometimes previous insert doesn't happen */ | |
468d015d | 1555 | && breakpoint_enabled (b->owner) |
0bde7532 | 1556 | && !b->duplicate) |
c906108c SS |
1557 | { |
1558 | ||
0bde7532 | 1559 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1560 | if (val) |
c5aa993b JM |
1561 | return val; |
1562 | ||
0bde7532 | 1563 | b->inserted = (is == mark_inserted); |
c906108c SS |
1564 | } |
1565 | ||
1566 | return 0; | |
1567 | } | |
1568 | ||
1569 | /* Clear the "inserted" flag in all breakpoints. */ | |
1570 | ||
1571 | void | |
fba45db2 | 1572 | mark_breakpoints_out (void) |
c906108c | 1573 | { |
075f6582 | 1574 | struct bp_location *bpt; |
c906108c | 1575 | |
075f6582 DJ |
1576 | ALL_BP_LOCATIONS (bpt) |
1577 | bpt->inserted = 0; | |
c906108c SS |
1578 | } |
1579 | ||
53a5351d JM |
1580 | /* Clear the "inserted" flag in all breakpoints and delete any |
1581 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1582 | |
1583 | Plus other such housekeeping that has to be done for breakpoints | |
1584 | between runs. | |
1585 | ||
53a5351d JM |
1586 | Note: this function gets called at the end of a run (by |
1587 | generic_mourn_inferior) and when a run begins (by | |
1588 | init_wait_for_inferior). */ | |
c906108c SS |
1589 | |
1590 | ||
1591 | ||
1592 | void | |
fba45db2 | 1593 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1594 | { |
52f0bd74 | 1595 | struct breakpoint *b, *temp; |
075f6582 | 1596 | struct bp_location *bpt; |
c906108c SS |
1597 | static int warning_needed = 0; |
1598 | ||
075f6582 DJ |
1599 | ALL_BP_LOCATIONS (bpt) |
1600 | bpt->inserted = 0; | |
1601 | ||
c906108c | 1602 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1603 | { |
c5aa993b JM |
1604 | switch (b->type) |
1605 | { | |
1606 | case bp_call_dummy: | |
1607 | case bp_watchpoint_scope: | |
c906108c | 1608 | |
c5aa993b JM |
1609 | /* If the call dummy breakpoint is at the entry point it will |
1610 | cause problems when the inferior is rerun, so we better | |
1611 | get rid of it. | |
c906108c | 1612 | |
c5aa993b JM |
1613 | Also get rid of scope breakpoints. */ |
1614 | delete_breakpoint (b); | |
1615 | break; | |
c906108c | 1616 | |
c5aa993b JM |
1617 | case bp_watchpoint: |
1618 | case bp_hardware_watchpoint: | |
1619 | case bp_read_watchpoint: | |
1620 | case bp_access_watchpoint: | |
c906108c | 1621 | |
c5aa993b JM |
1622 | /* Likewise for watchpoints on local expressions. */ |
1623 | if (b->exp_valid_block != NULL) | |
1624 | delete_breakpoint (b); | |
c860120c PM |
1625 | if (context == inf_starting) |
1626 | { | |
1627 | /* Reset val field to force reread of starting value | |
1628 | in insert_breakpoints. */ | |
1629 | if (b->val) | |
1630 | value_free (b->val); | |
1631 | b->val = NULL; | |
1632 | } | |
c5aa993b JM |
1633 | break; |
1634 | default: | |
1635 | /* Likewise for exception catchpoints in dynamic-linked | |
1636 | executables where required */ | |
f83f82bc AC |
1637 | if (ep_is_exception_catchpoint (b) |
1638 | && deprecated_exception_catchpoints_are_fragile) | |
c5aa993b JM |
1639 | { |
1640 | warning_needed = 1; | |
c906108c | 1641 | delete_breakpoint (b); |
c5aa993b JM |
1642 | } |
1643 | break; | |
1644 | } | |
1645 | } | |
c906108c | 1646 | |
f83f82bc AC |
1647 | if (deprecated_exception_catchpoints_are_fragile) |
1648 | deprecated_exception_support_initialized = 0; | |
c906108c | 1649 | |
c5aa993b | 1650 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1651 | if (warning_needed && (context != inf_exited)) |
1652 | { | |
53a5351d JM |
1653 | warning ("Exception catchpoints from last run were deleted."); |
1654 | warning ("You must reinsert them explicitly."); | |
c906108c | 1655 | warning_needed = 0; |
c5aa993b | 1656 | } |
c906108c SS |
1657 | } |
1658 | ||
c2c6d25f JM |
1659 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1660 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1661 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1662 | permanent breakpoint. | |
1663 | - When continuing from a location with an ordinary breakpoint, we | |
1664 | actually single step once before calling insert_breakpoints. | |
1665 | - When continuing from a localion with a permanent breakpoint, we | |
1666 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1667 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1668 | |
c2c6d25f | 1669 | enum breakpoint_here |
fba45db2 | 1670 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1671 | { |
075f6582 | 1672 | struct bp_location *bpt; |
c2c6d25f | 1673 | int any_breakpoint_here = 0; |
c906108c | 1674 | |
075f6582 DJ |
1675 | ALL_BP_LOCATIONS (bpt) |
1676 | { | |
1677 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1678 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1679 | continue; | |
1680 | ||
468d015d | 1681 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1682 | || bpt->owner->enable_state == bp_permanent) |
1683 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1684 | { | |
1685 | if (overlay_debugging | |
1686 | && section_is_overlay (bpt->section) | |
1687 | && !section_is_mapped (bpt->section)) | |
1688 | continue; /* unmapped overlay -- can't be a match */ | |
1689 | else if (bpt->owner->enable_state == bp_permanent) | |
1690 | return permanent_breakpoint_here; | |
1691 | else | |
1692 | any_breakpoint_here = 1; | |
1693 | } | |
1694 | } | |
c906108c | 1695 | |
c2c6d25f | 1696 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1697 | } |
1698 | ||
c2c6d25f | 1699 | |
53a5351d JM |
1700 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1701 | but it only returns true if there is actually a breakpoint inserted | |
1702 | at PC. */ | |
c906108c SS |
1703 | |
1704 | int | |
fba45db2 | 1705 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1706 | { |
075f6582 | 1707 | struct bp_location *bpt; |
c906108c | 1708 | |
075f6582 | 1709 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1710 | { |
075f6582 DJ |
1711 | if (bpt->loc_type != bp_loc_software_breakpoint |
1712 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1713 | continue; | |
1714 | ||
1715 | if (bpt->inserted | |
1716 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1717 | { | |
1718 | if (overlay_debugging | |
1719 | && section_is_overlay (bpt->section) | |
1720 | && !section_is_mapped (bpt->section)) | |
1721 | continue; /* unmapped overlay -- can't be a match */ | |
1722 | else | |
1723 | return 1; | |
1724 | } | |
c5aa993b | 1725 | } |
c906108c SS |
1726 | |
1727 | return 0; | |
1728 | } | |
1729 | ||
4fa8626c DJ |
1730 | /* This function returns non-zero iff there is a software breakpoint |
1731 | inserted at PC. */ | |
1732 | ||
1733 | int | |
1734 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1735 | { | |
1736 | struct bp_location *bpt; | |
1737 | int any_breakpoint_here = 0; | |
1738 | ||
1739 | ALL_BP_LOCATIONS (bpt) | |
1740 | { | |
1741 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1742 | continue; | |
1743 | ||
1744 | if ((breakpoint_enabled (bpt->owner) | |
1745 | || bpt->owner->enable_state == bp_permanent) | |
1746 | && bpt->inserted | |
1747 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1748 | { | |
1749 | if (overlay_debugging | |
1750 | && section_is_overlay (bpt->section) | |
1751 | && !section_is_mapped (bpt->section)) | |
1752 | continue; /* unmapped overlay -- can't be a match */ | |
1753 | else | |
1754 | return 1; | |
1755 | } | |
1756 | } | |
1757 | ||
1758 | return 0; | |
1759 | } | |
1760 | ||
075f6582 DJ |
1761 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1762 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1763 | |
1764 | int | |
39f77062 | 1765 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1766 | { |
075f6582 | 1767 | struct bp_location *bpt; |
c906108c SS |
1768 | int thread; |
1769 | ||
39f77062 | 1770 | thread = pid_to_thread_id (ptid); |
c906108c | 1771 | |
075f6582 | 1772 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1773 | { |
075f6582 DJ |
1774 | if (bpt->loc_type != bp_loc_software_breakpoint |
1775 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1776 | continue; | |
1777 | ||
468d015d | 1778 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1779 | || bpt->owner->enable_state == bp_permanent) |
1780 | && bpt->address == pc | |
1781 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1782 | { | |
1783 | if (overlay_debugging | |
1784 | && section_is_overlay (bpt->section) | |
1785 | && !section_is_mapped (bpt->section)) | |
1786 | continue; /* unmapped overlay -- can't be a match */ | |
1787 | else | |
1788 | return 1; | |
1789 | } | |
c5aa993b | 1790 | } |
c906108c SS |
1791 | |
1792 | return 0; | |
1793 | } | |
c906108c | 1794 | \f |
c5aa993b | 1795 | |
c906108c SS |
1796 | /* bpstat stuff. External routines' interfaces are documented |
1797 | in breakpoint.h. */ | |
1798 | ||
1799 | int | |
fba45db2 | 1800 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1801 | { |
1802 | return | |
1803 | (ep->type == bp_catch_load) | |
1804 | || (ep->type == bp_catch_unload) | |
1805 | || (ep->type == bp_catch_fork) | |
1806 | || (ep->type == bp_catch_vfork) | |
1807 | || (ep->type == bp_catch_exec) | |
1808 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1809 | || (ep->type == bp_catch_throw); |
c906108c | 1810 | |
c5aa993b | 1811 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1812 | } |
c5aa993b | 1813 | |
c906108c | 1814 | int |
fba45db2 | 1815 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1816 | { |
1817 | return | |
1818 | (ep->type == bp_catch_load) | |
d85310f7 | 1819 | || (ep->type == bp_catch_unload); |
c906108c SS |
1820 | } |
1821 | ||
1822 | int | |
fba45db2 | 1823 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1824 | { |
1825 | return | |
1826 | (ep->type == bp_catch_catch) | |
d85310f7 | 1827 | || (ep->type == bp_catch_throw); |
c906108c SS |
1828 | } |
1829 | ||
1830 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1831 | Also free any storage that is part of a bpstat. */ | |
1832 | ||
1833 | void | |
fba45db2 | 1834 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1835 | { |
1836 | bpstat p; | |
1837 | bpstat q; | |
1838 | ||
1839 | if (bsp == 0) | |
1840 | return; | |
1841 | p = *bsp; | |
1842 | while (p != NULL) | |
1843 | { | |
1844 | q = p->next; | |
1845 | if (p->old_val != NULL) | |
1846 | value_free (p->old_val); | |
c2b8ed2c | 1847 | free_command_lines (&p->commands); |
b8c9b27d | 1848 | xfree (p); |
c906108c SS |
1849 | p = q; |
1850 | } | |
1851 | *bsp = NULL; | |
1852 | } | |
1853 | ||
1854 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1855 | is part of the bpstat is copied as well. */ | |
1856 | ||
1857 | bpstat | |
fba45db2 | 1858 | bpstat_copy (bpstat bs) |
c906108c SS |
1859 | { |
1860 | bpstat p = NULL; | |
1861 | bpstat tmp; | |
1862 | bpstat retval = NULL; | |
1863 | ||
1864 | if (bs == NULL) | |
1865 | return bs; | |
1866 | ||
1867 | for (; bs != NULL; bs = bs->next) | |
1868 | { | |
1869 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1870 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1871 | if (bs->commands != NULL) |
1872 | tmp->commands = copy_command_lines (bs->commands); | |
1873 | if (bs->old_val != NULL) | |
1874 | tmp->old_val = value_copy (bs->old_val); | |
1875 | ||
c906108c SS |
1876 | if (p == NULL) |
1877 | /* This is the first thing in the chain. */ | |
1878 | retval = tmp; | |
1879 | else | |
1880 | p->next = tmp; | |
1881 | p = tmp; | |
1882 | } | |
1883 | p->next = NULL; | |
1884 | return retval; | |
1885 | } | |
1886 | ||
1887 | /* Find the bpstat associated with this breakpoint */ | |
1888 | ||
1889 | bpstat | |
fba45db2 | 1890 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1891 | { |
c5aa993b JM |
1892 | if (bsp == NULL) |
1893 | return NULL; | |
c906108c | 1894 | |
c5aa993b JM |
1895 | for (; bsp != NULL; bsp = bsp->next) |
1896 | { | |
1897 | if (bsp->breakpoint_at == breakpoint) | |
1898 | return bsp; | |
1899 | } | |
c906108c SS |
1900 | return NULL; |
1901 | } | |
1902 | ||
1903 | /* Find a step_resume breakpoint associated with this bpstat. | |
1904 | (If there are multiple step_resume bp's on the list, this function | |
1905 | will arbitrarily pick one.) | |
1906 | ||
1907 | It is an error to use this function if BPSTAT doesn't contain a | |
1908 | step_resume breakpoint. | |
1909 | ||
1910 | See wait_for_inferior's use of this function. */ | |
1911 | struct breakpoint * | |
fba45db2 | 1912 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1913 | { |
8601f500 MS |
1914 | int current_thread; |
1915 | ||
c906108c SS |
1916 | if (bsp == NULL) |
1917 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1918 | ||
8601f500 MS |
1919 | current_thread = pid_to_thread_id (inferior_ptid); |
1920 | ||
c906108c SS |
1921 | for (; bsp != NULL; bsp = bsp->next) |
1922 | { | |
1923 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1924 | (bsp->breakpoint_at->type == bp_step_resume) && |
1925 | (bsp->breakpoint_at->thread == current_thread || | |
1926 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1927 | return bsp->breakpoint_at; |
c906108c SS |
1928 | } |
1929 | ||
1930 | error ("Internal error (no step_resume breakpoint found)"); | |
1931 | } | |
1932 | ||
1933 | ||
1934 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1935 | at. *BSP upon return is a bpstat which points to the remaining | |
1936 | breakpoints stopped at (but which is not guaranteed to be good for | |
1937 | anything but further calls to bpstat_num). | |
1938 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1939 | ||
1940 | int | |
fba45db2 | 1941 | bpstat_num (bpstat *bsp) |
c906108c SS |
1942 | { |
1943 | struct breakpoint *b; | |
1944 | ||
1945 | if ((*bsp) == NULL) | |
1946 | return 0; /* No more breakpoint values */ | |
1947 | else | |
1948 | { | |
1949 | b = (*bsp)->breakpoint_at; | |
1950 | *bsp = (*bsp)->next; | |
1951 | if (b == NULL) | |
1952 | return -1; /* breakpoint that's been deleted since */ | |
1953 | else | |
c5aa993b | 1954 | return b->number; /* We have its number */ |
c906108c SS |
1955 | } |
1956 | } | |
1957 | ||
1958 | /* Modify BS so that the actions will not be performed. */ | |
1959 | ||
1960 | void | |
fba45db2 | 1961 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1962 | { |
1963 | for (; bs != NULL; bs = bs->next) | |
1964 | { | |
c2b8ed2c | 1965 | free_command_lines (&bs->commands); |
c906108c SS |
1966 | if (bs->old_val != NULL) |
1967 | { | |
1968 | value_free (bs->old_val); | |
1969 | bs->old_val = NULL; | |
1970 | } | |
1971 | } | |
1972 | } | |
1973 | ||
1974 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 1975 | static void |
4efb68b1 | 1976 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
1977 | { |
1978 | executing_breakpoint_commands = 0; | |
1979 | } | |
1980 | ||
1981 | /* Execute all the commands associated with all the breakpoints at this | |
1982 | location. Any of these commands could cause the process to proceed | |
1983 | beyond this point, etc. We look out for such changes by checking | |
1984 | the global "breakpoint_proceeded" after each command. */ | |
1985 | ||
1986 | void | |
fba45db2 | 1987 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1988 | { |
1989 | bpstat bs; | |
1990 | struct cleanup *old_chain; | |
c906108c SS |
1991 | |
1992 | /* Avoid endless recursion if a `source' command is contained | |
1993 | in bs->commands. */ | |
1994 | if (executing_breakpoint_commands) | |
1995 | return; | |
1996 | ||
1997 | executing_breakpoint_commands = 1; | |
1998 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1999 | ||
2000 | top: | |
2001 | /* Note that (as of this writing), our callers all appear to | |
2002 | be passing us the address of global stop_bpstat. And, if | |
2003 | our calls to execute_control_command cause the inferior to | |
2004 | proceed, that global (and hence, *bsp) will change. | |
2005 | ||
2006 | We must be careful to not touch *bsp unless the inferior | |
2007 | has not proceeded. */ | |
2008 | ||
2009 | /* This pointer will iterate over the list of bpstat's. */ | |
2010 | bs = *bsp; | |
2011 | ||
2012 | breakpoint_proceeded = 0; | |
2013 | for (; bs != NULL; bs = bs->next) | |
2014 | { | |
6c50ab1c JB |
2015 | struct command_line *cmd; |
2016 | struct cleanup *this_cmd_tree_chain; | |
2017 | ||
2018 | /* Take ownership of the BSP's command tree, if it has one. | |
2019 | ||
2020 | The command tree could legitimately contain commands like | |
2021 | 'step' and 'next', which call clear_proceed_status, which | |
2022 | frees stop_bpstat's command tree. To make sure this doesn't | |
2023 | free the tree we're executing out from under us, we need to | |
2024 | take ownership of the tree ourselves. Since a given bpstat's | |
2025 | commands are only executed once, we don't need to copy it; we | |
2026 | can clear the pointer in the bpstat, and make sure we free | |
2027 | the tree when we're done. */ | |
c906108c | 2028 | cmd = bs->commands; |
6c50ab1c JB |
2029 | bs->commands = 0; |
2030 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2031 | ||
c906108c SS |
2032 | while (cmd != NULL) |
2033 | { | |
2034 | execute_control_command (cmd); | |
2035 | ||
2036 | if (breakpoint_proceeded) | |
2037 | break; | |
2038 | else | |
2039 | cmd = cmd->next; | |
2040 | } | |
6c50ab1c JB |
2041 | |
2042 | /* We can free this command tree now. */ | |
2043 | do_cleanups (this_cmd_tree_chain); | |
2044 | ||
c906108c SS |
2045 | if (breakpoint_proceeded) |
2046 | /* The inferior is proceeded by the command; bomb out now. | |
2047 | The bpstat chain has been blown away by wait_for_inferior. | |
2048 | But since execution has stopped again, there is a new bpstat | |
2049 | to look at, so start over. */ | |
2050 | goto top; | |
c906108c | 2051 | } |
c2b8ed2c | 2052 | do_cleanups (old_chain); |
c906108c SS |
2053 | } |
2054 | ||
e514a9d6 | 2055 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2056 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2057 | by having it set different print_it values. |
2058 | ||
2059 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2060 | through the bpstat list of things causing this stop, calling the | |
2061 | print_bp_stop_message function on each one. The behavior of the | |
2062 | print_bp_stop_message function depends on the print_it field of | |
2063 | bpstat. If such field so indicates, call this function here. | |
2064 | ||
2065 | Return values from this routine (ultimately used by bpstat_print() | |
2066 | and normal_stop() to decide what to do): | |
2067 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2068 | don't print anything else. | |
2069 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2070 | that something to be followed by a location. | |
2071 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2072 | that something to be followed by a location. | |
2073 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2074 | analysis. */ | |
c906108c | 2075 | |
917317f4 | 2076 | static enum print_stop_action |
fba45db2 | 2077 | print_it_typical (bpstat bs) |
c906108c | 2078 | { |
3b31d625 | 2079 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2080 | struct ui_stream *stb; |
2081 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2082 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2083 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2084 | which has since been deleted. */ | |
e514a9d6 | 2085 | if (bs->breakpoint_at == NULL) |
917317f4 | 2086 | return PRINT_UNKNOWN; |
c906108c | 2087 | |
e514a9d6 | 2088 | switch (bs->breakpoint_at->type) |
c906108c | 2089 | { |
e514a9d6 JM |
2090 | case bp_breakpoint: |
2091 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2092 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2093 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2094 | bs->breakpoint_at->loc->address, | |
76897487 | 2095 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2096 | annotate_breakpoint (bs->breakpoint_at->number); |
2097 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2098 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2099 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2100 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2101 | ui_out_text (uiout, ", "); | |
2102 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2103 | break; |
2104 | ||
2105 | case bp_shlib_event: | |
917317f4 JM |
2106 | /* Did we stop because the user set the stop_on_solib_events |
2107 | variable? (If so, we report this as a generic, "Stopped due | |
2108 | to shlib event" message.) */ | |
e514a9d6 JM |
2109 | printf_filtered ("Stopped due to shared library event\n"); |
2110 | return PRINT_NOTHING; | |
2111 | break; | |
2112 | ||
c4093a6a JM |
2113 | case bp_thread_event: |
2114 | /* Not sure how we will get here. | |
2115 | GDB should not stop for these breakpoints. */ | |
2116 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2117 | return PRINT_NOTHING; | |
2118 | break; | |
2119 | ||
1900040c MS |
2120 | case bp_overlay_event: |
2121 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2122 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2123 | return PRINT_NOTHING; | |
2124 | break; | |
2125 | ||
e514a9d6 | 2126 | case bp_catch_load: |
c906108c SS |
2127 | annotate_catchpoint (bs->breakpoint_at->number); |
2128 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2129 | printf_filtered ("loaded"); |
2130 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2131 | return PRINT_SRC_AND_LOC; | |
2132 | break; | |
2133 | ||
2134 | case bp_catch_unload: | |
2135 | annotate_catchpoint (bs->breakpoint_at->number); | |
2136 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2137 | printf_filtered ("unloaded"); | |
2138 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2139 | return PRINT_SRC_AND_LOC; | |
2140 | break; | |
2141 | ||
2142 | case bp_catch_fork: | |
2143 | annotate_catchpoint (bs->breakpoint_at->number); | |
2144 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2145 | printf_filtered ("forked"); | |
53a5351d JM |
2146 | printf_filtered (" process %d), ", |
2147 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2148 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2149 | break; |
2150 | ||
2151 | case bp_catch_vfork: | |
2152 | annotate_catchpoint (bs->breakpoint_at->number); | |
2153 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2154 | printf_filtered ("vforked"); | |
2155 | printf_filtered (" process %d), ", | |
2156 | bs->breakpoint_at->forked_inferior_pid); | |
2157 | return PRINT_SRC_AND_LOC; | |
2158 | break; | |
2159 | ||
2160 | case bp_catch_exec: | |
c906108c SS |
2161 | annotate_catchpoint (bs->breakpoint_at->number); |
2162 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2163 | bs->breakpoint_at->number, |
2164 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2165 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2166 | break; |
2167 | ||
2168 | case bp_catch_catch: | |
53a5351d JM |
2169 | if (current_exception_event && |
2170 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2171 | { |
2172 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2173 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2174 | bs->breakpoint_at->number); | |
c5aa993b JM |
2175 | printf_filtered ("throw location "); |
2176 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2177 | printf_filtered ("%s:%d", | |
2178 | CURRENT_EXCEPTION_THROW_FILE, | |
2179 | CURRENT_EXCEPTION_THROW_LINE); | |
2180 | else | |
2181 | printf_filtered ("unknown"); | |
2182 | ||
2183 | printf_filtered (", catch location "); | |
2184 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2185 | printf_filtered ("%s:%d", | |
2186 | CURRENT_EXCEPTION_CATCH_FILE, | |
2187 | CURRENT_EXCEPTION_CATCH_LINE); | |
2188 | else | |
2189 | printf_filtered ("unknown"); | |
2190 | ||
2191 | printf_filtered ("\n"); | |
e514a9d6 JM |
2192 | /* don't bother to print location frame info */ |
2193 | return PRINT_SRC_ONLY; | |
c5aa993b | 2194 | } |
c906108c | 2195 | else |
c5aa993b | 2196 | { |
e514a9d6 JM |
2197 | /* really throw, some other bpstat will handle it */ |
2198 | return PRINT_UNKNOWN; | |
c5aa993b | 2199 | } |
e514a9d6 JM |
2200 | break; |
2201 | ||
2202 | case bp_catch_throw: | |
53a5351d JM |
2203 | if (current_exception_event && |
2204 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2205 | { |
2206 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2207 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2208 | bs->breakpoint_at->number); | |
c5aa993b JM |
2209 | printf_filtered ("throw location "); |
2210 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2211 | printf_filtered ("%s:%d", | |
2212 | CURRENT_EXCEPTION_THROW_FILE, | |
2213 | CURRENT_EXCEPTION_THROW_LINE); | |
2214 | else | |
2215 | printf_filtered ("unknown"); | |
2216 | ||
2217 | printf_filtered (", catch location "); | |
2218 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2219 | printf_filtered ("%s:%d", | |
2220 | CURRENT_EXCEPTION_CATCH_FILE, | |
2221 | CURRENT_EXCEPTION_CATCH_LINE); | |
2222 | else | |
2223 | printf_filtered ("unknown"); | |
2224 | ||
2225 | printf_filtered ("\n"); | |
e514a9d6 JM |
2226 | /* don't bother to print location frame info */ |
2227 | return PRINT_SRC_ONLY; | |
c5aa993b | 2228 | } |
c906108c | 2229 | else |
c5aa993b | 2230 | { |
e514a9d6 JM |
2231 | /* really catch, some other bpstat will handle it */ |
2232 | return PRINT_UNKNOWN; | |
c5aa993b | 2233 | } |
e514a9d6 | 2234 | break; |
c906108c | 2235 | |
e514a9d6 JM |
2236 | case bp_watchpoint: |
2237 | case bp_hardware_watchpoint: | |
2238 | if (bs->old_val != NULL) | |
2239 | { | |
2240 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2241 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2242 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2243 | mention (bs->breakpoint_at); |
3b31d625 | 2244 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2245 | ui_out_text (uiout, "\nOld value = "); |
2246 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2247 | ui_out_field_stream (uiout, "old", stb); | |
2248 | ui_out_text (uiout, "\nNew value = "); | |
2249 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2250 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2251 | do_cleanups (ui_out_chain); |
8b93c638 | 2252 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2253 | value_free (bs->old_val); |
2254 | bs->old_val = NULL; | |
2255 | } | |
2256 | /* More than one watchpoint may have been triggered. */ | |
2257 | return PRINT_UNKNOWN; | |
2258 | break; | |
2259 | ||
2260 | case bp_read_watchpoint: | |
9dc5e2a9 | 2261 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2262 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); |
8b93c638 | 2263 | mention (bs->breakpoint_at); |
3b31d625 | 2264 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2265 | ui_out_text (uiout, "\nValue = "); |
2266 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2267 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2268 | do_cleanups (ui_out_chain); |
8b93c638 | 2269 | ui_out_text (uiout, "\n"); |
917317f4 | 2270 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2271 | break; |
2272 | ||
2273 | case bp_access_watchpoint: | |
8b93c638 JM |
2274 | if (bs->old_val != NULL) |
2275 | { | |
2276 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2277 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2278 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2279 | mention (bs->breakpoint_at); |
3b31d625 | 2280 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2281 | ui_out_text (uiout, "\nOld value = "); |
2282 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2283 | ui_out_field_stream (uiout, "old", stb); | |
2284 | value_free (bs->old_val); | |
2285 | bs->old_val = NULL; | |
2286 | ui_out_text (uiout, "\nNew value = "); | |
2287 | } | |
2288 | else | |
2289 | { | |
2290 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2291 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2292 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
3b31d625 | 2293 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2294 | ui_out_text (uiout, "\nValue = "); |
2295 | } | |
2296 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2297 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2298 | do_cleanups (ui_out_chain); |
8b93c638 | 2299 | ui_out_text (uiout, "\n"); |
917317f4 | 2300 | return PRINT_UNKNOWN; |
e514a9d6 | 2301 | break; |
4ce44c66 | 2302 | |
e514a9d6 JM |
2303 | /* Fall through, we don't deal with these types of breakpoints |
2304 | here. */ | |
2305 | ||
11cf8741 | 2306 | case bp_finish: |
9dc5e2a9 | 2307 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2308 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2309 | return PRINT_UNKNOWN; |
2310 | break; | |
2311 | ||
e514a9d6 | 2312 | case bp_until: |
9dc5e2a9 | 2313 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2314 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2315 | return PRINT_UNKNOWN; |
2316 | break; | |
2317 | ||
c2d11a7d | 2318 | case bp_none: |
e514a9d6 JM |
2319 | case bp_longjmp: |
2320 | case bp_longjmp_resume: | |
2321 | case bp_step_resume: | |
2322 | case bp_through_sigtramp: | |
2323 | case bp_watchpoint_scope: | |
2324 | case bp_call_dummy: | |
2325 | default: | |
2326 | return PRINT_UNKNOWN; | |
2327 | } | |
2328 | } | |
2329 | ||
2330 | /* Generic routine for printing messages indicating why we | |
2331 | stopped. The behavior of this function depends on the value | |
2332 | 'print_it' in the bpstat structure. Under some circumstances we | |
2333 | may decide not to print anything here and delegate the task to | |
2334 | normal_stop(). */ | |
2335 | ||
2336 | static enum print_stop_action | |
2337 | print_bp_stop_message (bpstat bs) | |
2338 | { | |
2339 | switch (bs->print_it) | |
2340 | { | |
2341 | case print_it_noop: | |
2342 | /* Nothing should be printed for this bpstat entry. */ | |
2343 | return PRINT_UNKNOWN; | |
2344 | break; | |
2345 | ||
2346 | case print_it_done: | |
2347 | /* We still want to print the frame, but we already printed the | |
2348 | relevant messages. */ | |
2349 | return PRINT_SRC_AND_LOC; | |
2350 | break; | |
2351 | ||
2352 | case print_it_normal: | |
3086aeae DJ |
2353 | /* Normal case. Call the breakpoint's print_it method, or |
2354 | print_it_typical. */ | |
2355 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2356 | && bs->breakpoint_at->ops->print_it != NULL) | |
2357 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2358 | else | |
2359 | return print_it_typical (bs); | |
e514a9d6 | 2360 | break; |
3086aeae | 2361 | |
e514a9d6 | 2362 | default: |
8e65ff28 AC |
2363 | internal_error (__FILE__, __LINE__, |
2364 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2365 | break; |
c906108c | 2366 | } |
c906108c SS |
2367 | } |
2368 | ||
e514a9d6 JM |
2369 | /* Print a message indicating what happened. This is called from |
2370 | normal_stop(). The input to this routine is the head of the bpstat | |
2371 | list - a list of the eventpoints that caused this stop. This | |
2372 | routine calls the generic print routine for printing a message | |
2373 | about reasons for stopping. This will print (for example) the | |
2374 | "Breakpoint n," part of the output. The return value of this | |
2375 | routine is one of: | |
c906108c | 2376 | |
917317f4 JM |
2377 | PRINT_UNKNOWN: Means we printed nothing |
2378 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2379 | code to print the location. An example is |
2380 | "Breakpoint 1, " which should be followed by | |
2381 | the location. | |
917317f4 | 2382 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2383 | to also print the location part of the message. |
2384 | An example is the catch/throw messages, which | |
917317f4 JM |
2385 | don't require a location appended to the end. |
2386 | PRINT_NOTHING: We have done some printing and we don't need any | |
2387 | further info to be printed.*/ | |
c906108c | 2388 | |
917317f4 | 2389 | enum print_stop_action |
fba45db2 | 2390 | bpstat_print (bpstat bs) |
c906108c SS |
2391 | { |
2392 | int val; | |
c5aa993b | 2393 | |
c906108c | 2394 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2395 | (Currently all watchpoints go on the bpstat whether hit or not. |
2396 | That probably could (should) be changed, provided care is taken | |
c906108c | 2397 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2398 | for (; bs; bs = bs->next) |
2399 | { | |
2400 | val = print_bp_stop_message (bs); | |
2401 | if (val == PRINT_SRC_ONLY | |
2402 | || val == PRINT_SRC_AND_LOC | |
2403 | || val == PRINT_NOTHING) | |
2404 | return val; | |
2405 | } | |
c906108c | 2406 | |
e514a9d6 JM |
2407 | /* We reached the end of the chain, or we got a null BS to start |
2408 | with and nothing was printed. */ | |
917317f4 | 2409 | return PRINT_UNKNOWN; |
c906108c SS |
2410 | } |
2411 | ||
2412 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2413 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2414 | The argument is a "struct expression *" that has been cast to char * to | |
2415 | make it pass through catch_errors. */ | |
2416 | ||
2417 | static int | |
4efb68b1 | 2418 | breakpoint_cond_eval (void *exp) |
c906108c | 2419 | { |
278cd55f | 2420 | struct value *mark = value_mark (); |
c5aa993b | 2421 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2422 | value_free_to_mark (mark); |
2423 | return i; | |
2424 | } | |
2425 | ||
2426 | /* Allocate a new bpstat and chain it to the current one. */ | |
2427 | ||
2428 | static bpstat | |
831662b3 | 2429 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2430 | { |
2431 | bpstat bs; | |
2432 | ||
2433 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2434 | cbs->next = bs; | |
2435 | bs->breakpoint_at = b; | |
2436 | /* If the condition is false, etc., don't do the commands. */ | |
2437 | bs->commands = NULL; | |
2438 | bs->old_val = NULL; | |
2439 | bs->print_it = print_it_normal; | |
2440 | return bs; | |
2441 | } | |
2442 | \f | |
2443 | /* Possible return values for watchpoint_check (this can't be an enum | |
2444 | because of check_errors). */ | |
2445 | /* The watchpoint has been deleted. */ | |
2446 | #define WP_DELETED 1 | |
2447 | /* The value has changed. */ | |
2448 | #define WP_VALUE_CHANGED 2 | |
2449 | /* The value has not changed. */ | |
2450 | #define WP_VALUE_NOT_CHANGED 3 | |
2451 | ||
2452 | #define BP_TEMPFLAG 1 | |
2453 | #define BP_HARDWAREFLAG 2 | |
2454 | ||
2455 | /* Check watchpoint condition. */ | |
2456 | ||
2457 | static int | |
4efb68b1 | 2458 | watchpoint_check (void *p) |
c906108c SS |
2459 | { |
2460 | bpstat bs = (bpstat) p; | |
2461 | struct breakpoint *b; | |
2462 | struct frame_info *fr; | |
2463 | int within_current_scope; | |
2464 | ||
2465 | b = bs->breakpoint_at; | |
2466 | ||
2467 | if (b->exp_valid_block == NULL) | |
2468 | within_current_scope = 1; | |
2469 | else | |
2470 | { | |
2471 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2472 | any chance of handling watchpoints on local variables, we'll need |
2473 | the frame chain (so we can determine if we're in scope). */ | |
2474 | reinit_frame_cache (); | |
101dcfbe | 2475 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2476 | within_current_scope = (fr != NULL); |
c12260ac CV |
2477 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2478 | in the function but the stack frame has already been invalidated. | |
2479 | Since we can't rely on the values of local variables after the | |
2480 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2481 | state as `not changed' without further checking. |
2482 | ||
2483 | vinschen/2003-09-04: The former implementation left out the case | |
2484 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2485 | because the current PC is currently in an epilogue. Calling | |
2486 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2487 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2488 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2489 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2490 | if (fr && within_current_scope) |
c906108c SS |
2491 | /* If we end up stopping, the current frame will get selected |
2492 | in normal_stop. So this call to select_frame won't affect | |
2493 | the user. */ | |
0f7d239c | 2494 | select_frame (fr); |
c906108c | 2495 | } |
c5aa993b | 2496 | |
c906108c SS |
2497 | if (within_current_scope) |
2498 | { | |
2499 | /* We use value_{,free_to_}mark because it could be a | |
2500 | *long* time before we return to the command level and | |
c5aa993b JM |
2501 | call free_all_values. We can't call free_all_values because |
2502 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2503 | |
278cd55f AC |
2504 | struct value *mark = value_mark (); |
2505 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2506 | if (!value_equal (b->val, new_val)) |
2507 | { | |
2508 | release_value (new_val); | |
2509 | value_free_to_mark (mark); | |
2510 | bs->old_val = b->val; | |
2511 | b->val = new_val; | |
2512 | /* We will stop here */ | |
2513 | return WP_VALUE_CHANGED; | |
2514 | } | |
2515 | else | |
2516 | { | |
2517 | /* Nothing changed, don't do anything. */ | |
2518 | value_free_to_mark (mark); | |
2519 | /* We won't stop here */ | |
2520 | return WP_VALUE_NOT_CHANGED; | |
2521 | } | |
2522 | } | |
2523 | else | |
2524 | { | |
2525 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2526 | if we temporarily ignored the watchpoint, then when |
2527 | we reenter the block in which it is valid it contains | |
2528 | garbage (in the case of a function, it may have two | |
2529 | garbage values, one before and one after the prologue). | |
2530 | So we can't even detect the first assignment to it and | |
2531 | watch after that (since the garbage may or may not equal | |
2532 | the first value assigned). */ | |
4ce44c66 JM |
2533 | /* We print all the stop information in print_it_typical(), but |
2534 | in this case, by the time we call print_it_typical() this bp | |
2535 | will be deleted already. So we have no choice but print the | |
2536 | information here. */ | |
9dc5e2a9 | 2537 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2538 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2539 | ui_out_text (uiout, "\nWatchpoint "); |
2540 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2541 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2542 | which its expression is valid.\n"); | |
4ce44c66 | 2543 | |
c906108c | 2544 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2545 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2546 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2547 | |
2548 | return WP_DELETED; | |
2549 | } | |
2550 | } | |
2551 | ||
9709f61c | 2552 | /* Get a bpstat associated with having just stopped at address |
46587c42 JJ |
2553 | BP_ADDR in thread PTID. STOPPED_BY_WATCHPOINT is 1 if the |
2554 | target thinks we stopped due to a hardware watchpoint, 0 if we | |
2555 | know we did not trigger a hardware watchpoint, and -1 if we do not know. */ | |
c906108c SS |
2556 | |
2557 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2558 | don't understand this stop. Result is a chain of bpstat's such that: | |
2559 | ||
c5aa993b | 2560 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2561 | |
c5aa993b | 2562 | if we understand why we stopped, the result is not null. |
c906108c | 2563 | |
c5aa993b JM |
2564 | Each element of the chain refers to a particular breakpoint or |
2565 | watchpoint at which we have stopped. (We may have stopped for | |
2566 | several reasons concurrently.) | |
c906108c | 2567 | |
c5aa993b JM |
2568 | Each element of the chain has valid next, breakpoint_at, |
2569 | commands, FIXME??? fields. */ | |
c906108c SS |
2570 | |
2571 | bpstat | |
00d4360e | 2572 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid, int stopped_by_watchpoint) |
c906108c | 2573 | { |
52f0bd74 | 2574 | struct breakpoint *b, *temp; |
c906108c SS |
2575 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
2576 | int real_breakpoint = 0; | |
2577 | /* Root of the chain of bpstat's */ | |
2578 | struct bpstats root_bs[1]; | |
2579 | /* Pointer to the last thing in the chain currently. */ | |
2580 | bpstat bs = root_bs; | |
fa5281d0 | 2581 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2582 | |
c906108c | 2583 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2584 | { |
468d015d | 2585 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2586 | continue; |
2587 | ||
2588 | if (b->type != bp_watchpoint | |
46587c42 JJ |
2589 | && b->type != bp_hardware_watchpoint |
2590 | && b->type != bp_read_watchpoint | |
2591 | && b->type != bp_access_watchpoint | |
c5aa993b JM |
2592 | && b->type != bp_hardware_breakpoint |
2593 | && b->type != bp_catch_fork | |
2594 | && b->type != bp_catch_vfork | |
2595 | && b->type != bp_catch_exec | |
2596 | && b->type != bp_catch_catch | |
2597 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2598 | { |
5cab636d | 2599 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2600 | continue; |
2601 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2602 | && section_is_overlay (b->loc->section) |
2603 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2604 | continue; |
2605 | } | |
c906108c | 2606 | |
46587c42 JJ |
2607 | /* Continuable hardware watchpoints are treated as non-existent if the |
2608 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2609 | some data address). Otherwise gdb won't stop on a break instruction | |
2610 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2611 | been defined. */ | |
2612 | ||
2613 | if ((b->type == bp_hardware_watchpoint | |
2614 | || b->type == bp_read_watchpoint | |
2615 | || b->type == bp_access_watchpoint) | |
2616 | && !stopped_by_watchpoint) | |
2617 | continue; | |
2618 | ||
c02f5703 MS |
2619 | if (b->type == bp_hardware_breakpoint) |
2620 | { | |
9709f61c | 2621 | if (b->loc->address != bp_addr) |
c02f5703 MS |
2622 | continue; |
2623 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2624 | && section_is_overlay (b->loc->section) |
2625 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2626 | continue; |
2627 | } | |
c5aa993b | 2628 | |
c5aa993b JM |
2629 | /* Is this a catchpoint of a load or unload? If so, did we |
2630 | get a load or unload of the specified library? If not, | |
2631 | ignore it. */ | |
2632 | if ((b->type == bp_catch_load) | |
c906108c | 2633 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2634 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2635 | || ((b->dll_pathname != NULL) |
53a5351d | 2636 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2637 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2638 | PIDGET (inferior_ptid))) | |
53a5351d | 2639 | != 0))) |
c906108c | 2640 | #endif |
c5aa993b JM |
2641 | ) |
2642 | continue; | |
2643 | ||
2644 | if ((b->type == bp_catch_unload) | |
c906108c | 2645 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2646 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2647 | || ((b->dll_pathname != NULL) |
53a5351d | 2648 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2649 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2650 | PIDGET (inferior_ptid))) | |
53a5351d | 2651 | != 0))) |
c906108c | 2652 | #endif |
c5aa993b JM |
2653 | ) |
2654 | continue; | |
c906108c | 2655 | |
c5aa993b | 2656 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2657 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2658 | &b->forked_inferior_pid)) | |
c5aa993b | 2659 | continue; |
c906108c | 2660 | |
c5aa993b | 2661 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2662 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2663 | &b->forked_inferior_pid)) | |
c5aa993b | 2664 | continue; |
c906108c | 2665 | |
c5aa993b | 2666 | if ((b->type == bp_catch_exec) |
47932f85 | 2667 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2668 | continue; |
c906108c | 2669 | |
c5aa993b JM |
2670 | if (ep_is_exception_catchpoint (b) && |
2671 | !(current_exception_event = target_get_current_exception_event ())) | |
2672 | continue; | |
c906108c | 2673 | |
c5aa993b JM |
2674 | /* Come here if it's a watchpoint, or if the break address matches */ |
2675 | ||
2676 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2677 | ||
2678 | /* Watchpoints may change this, if not found to have triggered. */ | |
2679 | bs->stop = 1; | |
2680 | bs->print = 1; | |
2681 | ||
53a5351d JM |
2682 | if (b->type == bp_watchpoint || |
2683 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2684 | { |
9ebf4acf AC |
2685 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2686 | b->number); | |
2687 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2688 | int e = catch_errors (watchpoint_check, bs, message, | |
2689 | RETURN_MASK_ALL); | |
2690 | do_cleanups (cleanups); | |
2691 | switch (e) | |
c5aa993b JM |
2692 | { |
2693 | case WP_DELETED: | |
2694 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2695 | /* Actually this is superfluous, because by the time we |
2696 | call print_it_typical() the wp will be already deleted, | |
2697 | and the function will return immediately. */ | |
c5aa993b JM |
2698 | bs->print_it = print_it_done; |
2699 | /* Stop. */ | |
2700 | break; | |
2701 | case WP_VALUE_CHANGED: | |
2702 | /* Stop. */ | |
2703 | ++(b->hit_count); | |
2704 | break; | |
2705 | case WP_VALUE_NOT_CHANGED: | |
2706 | /* Don't stop. */ | |
2707 | bs->print_it = print_it_noop; | |
2708 | bs->stop = 0; | |
c5aa993b JM |
2709 | continue; |
2710 | default: | |
2711 | /* Can't happen. */ | |
2712 | /* FALLTHROUGH */ | |
2713 | case 0: | |
2714 | /* Error from catch_errors. */ | |
2715 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2716 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2717 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2718 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2719 | /* We've already printed what needs to be printed. */ |
2720 | bs->print_it = print_it_done; | |
2721 | ||
2722 | /* Stop. */ | |
2723 | break; | |
2724 | } | |
2725 | } | |
53a5351d JM |
2726 | else if (b->type == bp_read_watchpoint || |
2727 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2728 | { |
2729 | CORE_ADDR addr; | |
278cd55f | 2730 | struct value *v; |
c5aa993b JM |
2731 | int found = 0; |
2732 | ||
4aa7a7f5 | 2733 | if (!target_stopped_data_address (¤t_target, &addr)) |
c5aa993b JM |
2734 | continue; |
2735 | for (v = b->val_chain; v; v = v->next) | |
2736 | { | |
5c44784c JM |
2737 | if (VALUE_LVAL (v) == lval_memory |
2738 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2739 | { |
df407dfe | 2740 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
2741 | |
2742 | if (v == b->val_chain | |
2743 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2744 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2745 | { | |
2746 | CORE_ADDR vaddr; | |
2747 | ||
df407dfe | 2748 | vaddr = VALUE_ADDRESS (v) + value_offset (v); |
2e70b7b9 MS |
2749 | /* Exact match not required. Within range is |
2750 | sufficient. */ | |
2751 | if (addr >= vaddr && | |
df407dfe | 2752 | addr < vaddr + TYPE_LENGTH (value_type (v))) |
2e70b7b9 MS |
2753 | found = 1; |
2754 | } | |
c5aa993b JM |
2755 | } |
2756 | } | |
2757 | if (found) | |
9ebf4acf AC |
2758 | { |
2759 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2760 | b->number); | |
2761 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2762 | int e = catch_errors (watchpoint_check, bs, message, | |
2763 | RETURN_MASK_ALL); | |
2764 | do_cleanups (cleanups); | |
2765 | switch (e) | |
2766 | { | |
2767 | case WP_DELETED: | |
2768 | /* We've already printed what needs to be printed. */ | |
2769 | bs->print_it = print_it_done; | |
2770 | /* Stop. */ | |
2771 | break; | |
2772 | case WP_VALUE_CHANGED: | |
2773 | if (b->type == bp_read_watchpoint) | |
2774 | { | |
2775 | /* Don't stop: read watchpoints shouldn't fire if | |
2776 | the value has changed. This is for targets | |
2777 | which cannot set read-only watchpoints. */ | |
2778 | bs->print_it = print_it_noop; | |
2779 | bs->stop = 0; | |
2780 | continue; | |
2781 | } | |
2782 | ++(b->hit_count); | |
2783 | break; | |
2784 | case WP_VALUE_NOT_CHANGED: | |
2785 | /* Stop. */ | |
2786 | ++(b->hit_count); | |
2787 | break; | |
2788 | default: | |
2789 | /* Can't happen. */ | |
2790 | case 0: | |
2791 | /* Error from catch_errors. */ | |
2792 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2793 | if (b->related_breakpoint) | |
2794 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2795 | b->disposition = disp_del_at_next_stop; | |
2796 | /* We've already printed what needs to be printed. */ | |
2797 | bs->print_it = print_it_done; | |
2798 | break; | |
2799 | } | |
2800 | } | |
53a5351d JM |
2801 | else /* found == 0 */ |
2802 | { | |
2803 | /* This is a case where some watchpoint(s) triggered, | |
2804 | but not at the address of this watchpoint (FOUND | |
2805 | was left zero). So don't print anything for this | |
2806 | watchpoint. */ | |
2807 | bs->print_it = print_it_noop; | |
2808 | bs->stop = 0; | |
2809 | continue; | |
2810 | } | |
c5aa993b JM |
2811 | } |
2812 | else | |
2813 | { | |
2814 | /* By definition, an encountered breakpoint is a triggered | |
2815 | breakpoint. */ | |
2816 | ++(b->hit_count); | |
c906108c | 2817 | |
c5aa993b JM |
2818 | real_breakpoint = 1; |
2819 | } | |
2820 | ||
818dd999 AC |
2821 | if (frame_id_p (b->frame_id) |
2822 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2823 | bs->stop = 0; |
2824 | else | |
2825 | { | |
2826 | int value_is_zero = 0; | |
2827 | ||
2828 | if (b->cond) | |
2829 | { | |
2830 | /* Need to select the frame, with all that implies | |
2831 | so that the conditions will have the right context. */ | |
0f7d239c | 2832 | select_frame (get_current_frame ()); |
c5aa993b JM |
2833 | value_is_zero |
2834 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2835 | "Error in testing breakpoint condition:\n", | |
2836 | RETURN_MASK_ALL); | |
2837 | /* FIXME-someday, should give breakpoint # */ | |
2838 | free_all_values (); | |
2839 | } | |
2840 | if (b->cond && value_is_zero) | |
2841 | { | |
2842 | bs->stop = 0; | |
2843 | /* Don't consider this a hit. */ | |
2844 | --(b->hit_count); | |
2845 | } | |
fa5281d0 DJ |
2846 | else if (b->thread != -1 && b->thread != thread_id) |
2847 | { | |
2848 | bs->stop = 0; | |
2849 | /* Don't consider this a hit. */ | |
2850 | --(b->hit_count); | |
2851 | } | |
c5aa993b JM |
2852 | else if (b->ignore_count > 0) |
2853 | { | |
2854 | b->ignore_count--; | |
5c44784c | 2855 | annotate_ignore_count_change (); |
c5aa993b JM |
2856 | bs->stop = 0; |
2857 | } | |
2858 | else | |
2859 | { | |
2860 | /* We will stop here */ | |
b5de0fa7 EZ |
2861 | if (b->disposition == disp_disable) |
2862 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2863 | if (b->silent) |
2864 | bs->print = 0; | |
552f4abf | 2865 | bs->commands = b->commands; |
c5aa993b | 2866 | if (bs->commands && |
6314a349 AC |
2867 | (strcmp ("silent", bs->commands->line) == 0 |
2868 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
2869 | { |
2870 | bs->commands = bs->commands->next; | |
c906108c | 2871 | bs->print = 0; |
c5aa993b | 2872 | } |
552f4abf | 2873 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2874 | } |
2875 | } | |
2876 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2877 | if (bs->stop == 0 || bs->print == 0) | |
2878 | bs->print_it = print_it_noop; | |
2879 | } | |
c906108c SS |
2880 | |
2881 | bs->next = NULL; /* Terminate the chain */ | |
2882 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2883 | ||
c906108c SS |
2884 | /* The value of a hardware watchpoint hasn't changed, but the |
2885 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2886 | if (bs && !bs->stop && |
c906108c SS |
2887 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2888 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2889 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2890 | { | |
2891 | remove_breakpoints (); | |
2892 | insert_breakpoints (); | |
2893 | } | |
2894 | return bs; | |
2895 | } | |
2896 | \f | |
2897 | /* Tell what to do about this bpstat. */ | |
2898 | struct bpstat_what | |
fba45db2 | 2899 | bpstat_what (bpstat bs) |
c906108c SS |
2900 | { |
2901 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2902 | enum class |
2903 | { | |
2904 | /* This bpstat element has no effect on the main_action. */ | |
2905 | no_effect = 0, | |
2906 | ||
2907 | /* There was a watchpoint, stop but don't print. */ | |
2908 | wp_silent, | |
c906108c | 2909 | |
c5aa993b JM |
2910 | /* There was a watchpoint, stop and print. */ |
2911 | wp_noisy, | |
c906108c | 2912 | |
c5aa993b JM |
2913 | /* There was a breakpoint but we're not stopping. */ |
2914 | bp_nostop, | |
c906108c | 2915 | |
c5aa993b JM |
2916 | /* There was a breakpoint, stop but don't print. */ |
2917 | bp_silent, | |
c906108c | 2918 | |
c5aa993b JM |
2919 | /* There was a breakpoint, stop and print. */ |
2920 | bp_noisy, | |
c906108c | 2921 | |
c5aa993b JM |
2922 | /* We hit the longjmp breakpoint. */ |
2923 | long_jump, | |
c906108c | 2924 | |
c5aa993b JM |
2925 | /* We hit the longjmp_resume breakpoint. */ |
2926 | long_resume, | |
c906108c | 2927 | |
c5aa993b JM |
2928 | /* We hit the step_resume breakpoint. */ |
2929 | step_resume, | |
c906108c | 2930 | |
c5aa993b JM |
2931 | /* We hit the through_sigtramp breakpoint. */ |
2932 | through_sig, | |
c906108c | 2933 | |
c5aa993b JM |
2934 | /* We hit the shared library event breakpoint. */ |
2935 | shlib_event, | |
c906108c | 2936 | |
c5aa993b JM |
2937 | /* We caught a shared library event. */ |
2938 | catch_shlib_event, | |
c906108c | 2939 | |
c5aa993b JM |
2940 | /* This is just used to count how many enums there are. */ |
2941 | class_last | |
c906108c SS |
2942 | }; |
2943 | ||
2944 | /* Here is the table which drives this routine. So that we can | |
2945 | format it pretty, we define some abbreviations for the | |
2946 | enum bpstat_what codes. */ | |
2947 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2948 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2949 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2950 | #define sgl BPSTAT_WHAT_SINGLE | |
2951 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2952 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2953 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2954 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2955 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2956 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2957 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2958 | ||
2959 | /* "Can't happen." Might want to print an error message. | |
2960 | abort() is not out of the question, but chances are GDB is just | |
2961 | a bit confused, not unusable. */ | |
2962 | #define err BPSTAT_WHAT_STOP_NOISY | |
2963 | ||
2964 | /* Given an old action and a class, come up with a new action. */ | |
2965 | /* One interesting property of this table is that wp_silent is the same | |
2966 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2967 | after stopping, the check for whether to step over a breakpoint | |
2968 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2969 | reference to how we stopped. We retain separate wp_silent and |
2970 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2971 | |
2972 | Another possibly interesting property of this table is that | |
2973 | there's a partial ordering, priority-like, of the actions. Once | |
2974 | you've decided that some action is appropriate, you'll never go | |
2975 | back and decide something of a lower priority is better. The | |
2976 | ordering is: | |
2977 | ||
7e73cedf | 2978 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2979 | sgl < clrs shl shlr slr sn sr ss ts |
2980 | slr < err shl shlr sn sr ss ts | |
2981 | clr < clrs err shl shlr sn sr ss ts | |
2982 | clrs < err shl shlr sn sr ss ts | |
2983 | ss < shl shlr sn sr ts | |
2984 | sn < shl shlr sr ts | |
2985 | sr < shl shlr ts | |
2986 | shl < shlr | |
2987 | ts < | |
2988 | shlr < | |
2989 | ||
43ff13b4 JM |
2990 | What I think this means is that we don't need a damned table |
2991 | here. If you just put the rows and columns in the right order, | |
2992 | it'd look awfully regular. We could simply walk the bpstat list | |
2993 | and choose the highest priority action we find, with a little | |
2994 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2995 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2996 | is messy anyway). */ | |
c906108c SS |
2997 | |
2998 | /* step_resume entries: a step resume breakpoint overrides another | |
2999 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3000 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3001 | /* We handle the through_sigtramp_breakpoint the same way; having both |
3002 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
3003 | ||
3004 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3005 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3006 | { | |
3007 | /* old action */ | |
3008 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
3009 | */ | |
3010 | /*no_effect */ | |
3011 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
3012 | /*wp_silent */ | |
3013 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3014 | /*wp_noisy */ | |
3015 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3016 | /*bp_nostop */ | |
3017 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
3018 | /*bp_silent */ | |
3019 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3020 | /*bp_noisy */ | |
3021 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3022 | /*long_jump */ | |
a48bb0b3 | 3023 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
3024 | /*long_resume */ |
3025 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
3026 | /*step_resume */ | |
3027 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
3028 | /*through_sig */ | |
3029 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
3030 | /*shlib */ | |
3031 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
3032 | /*catch_shlib */ | |
3033 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
3034 | }; | |
c906108c SS |
3035 | |
3036 | #undef kc | |
3037 | #undef ss | |
3038 | #undef sn | |
3039 | #undef sgl | |
3040 | #undef slr | |
3041 | #undef clr | |
3042 | #undef clrs | |
3043 | #undef err | |
3044 | #undef sr | |
3045 | #undef ts | |
3046 | #undef shl | |
3047 | #undef shlr | |
3048 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3049 | struct bpstat_what retval; | |
3050 | ||
3051 | retval.call_dummy = 0; | |
3052 | for (; bs != NULL; bs = bs->next) | |
3053 | { | |
3054 | enum class bs_class = no_effect; | |
3055 | if (bs->breakpoint_at == NULL) | |
3056 | /* I suspect this can happen if it was a momentary breakpoint | |
3057 | which has since been deleted. */ | |
3058 | continue; | |
3059 | switch (bs->breakpoint_at->type) | |
3060 | { | |
3061 | case bp_none: | |
3062 | continue; | |
3063 | ||
3064 | case bp_breakpoint: | |
3065 | case bp_hardware_breakpoint: | |
3066 | case bp_until: | |
3067 | case bp_finish: | |
3068 | if (bs->stop) | |
3069 | { | |
3070 | if (bs->print) | |
3071 | bs_class = bp_noisy; | |
3072 | else | |
3073 | bs_class = bp_silent; | |
3074 | } | |
3075 | else | |
3076 | bs_class = bp_nostop; | |
3077 | break; | |
3078 | case bp_watchpoint: | |
3079 | case bp_hardware_watchpoint: | |
3080 | case bp_read_watchpoint: | |
3081 | case bp_access_watchpoint: | |
3082 | if (bs->stop) | |
3083 | { | |
3084 | if (bs->print) | |
3085 | bs_class = wp_noisy; | |
3086 | else | |
3087 | bs_class = wp_silent; | |
3088 | } | |
3089 | else | |
53a5351d JM |
3090 | /* There was a watchpoint, but we're not stopping. |
3091 | This requires no further action. */ | |
c906108c SS |
3092 | bs_class = no_effect; |
3093 | break; | |
3094 | case bp_longjmp: | |
3095 | bs_class = long_jump; | |
3096 | break; | |
3097 | case bp_longjmp_resume: | |
3098 | bs_class = long_resume; | |
3099 | break; | |
3100 | case bp_step_resume: | |
3101 | if (bs->stop) | |
3102 | { | |
3103 | bs_class = step_resume; | |
3104 | } | |
3105 | else | |
3106 | /* It is for the wrong frame. */ | |
3107 | bs_class = bp_nostop; | |
3108 | break; | |
3109 | case bp_through_sigtramp: | |
3110 | bs_class = through_sig; | |
3111 | break; | |
3112 | case bp_watchpoint_scope: | |
3113 | bs_class = bp_nostop; | |
3114 | break; | |
c5aa993b JM |
3115 | case bp_shlib_event: |
3116 | bs_class = shlib_event; | |
3117 | break; | |
c4093a6a | 3118 | case bp_thread_event: |
1900040c | 3119 | case bp_overlay_event: |
c4093a6a JM |
3120 | bs_class = bp_nostop; |
3121 | break; | |
c5aa993b JM |
3122 | case bp_catch_load: |
3123 | case bp_catch_unload: | |
3124 | /* Only if this catchpoint triggered should we cause the | |
3125 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3126 | catchpoint. */ | |
3127 | if (bs->stop) | |
3128 | bs_class = catch_shlib_event; | |
3129 | else | |
3130 | bs_class = no_effect; | |
3131 | break; | |
3132 | case bp_catch_fork: | |
3133 | case bp_catch_vfork: | |
3134 | case bp_catch_exec: | |
3135 | if (bs->stop) | |
3136 | { | |
3137 | if (bs->print) | |
3138 | bs_class = bp_noisy; | |
3139 | else | |
3140 | bs_class = bp_silent; | |
3141 | } | |
3142 | else | |
53a5351d JM |
3143 | /* There was a catchpoint, but we're not stopping. |
3144 | This requires no further action. */ | |
c5aa993b JM |
3145 | bs_class = no_effect; |
3146 | break; | |
3147 | case bp_catch_catch: | |
3148 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3149 | bs_class = bp_nostop; | |
3150 | else if (bs->stop) | |
3151 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3152 | break; | |
3153 | case bp_catch_throw: | |
3154 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3155 | bs_class = bp_nostop; | |
3156 | else if (bs->stop) | |
3157 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3158 | break; |
c906108c | 3159 | case bp_call_dummy: |
53a5351d JM |
3160 | /* Make sure the action is stop (silent or noisy), |
3161 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3162 | bs_class = bp_silent; |
3163 | retval.call_dummy = 1; | |
3164 | break; | |
3165 | } | |
c5aa993b | 3166 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3167 | } |
3168 | retval.main_action = current_action; | |
3169 | return retval; | |
3170 | } | |
3171 | ||
3172 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3173 | without hardware support). This isn't related to a specific bpstat, | |
3174 | just to things like whether watchpoints are set. */ | |
3175 | ||
c5aa993b | 3176 | int |
fba45db2 | 3177 | bpstat_should_step (void) |
c906108c SS |
3178 | { |
3179 | struct breakpoint *b; | |
3180 | ALL_BREAKPOINTS (b) | |
468d015d | 3181 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3182 | return 1; |
c906108c SS |
3183 | return 0; |
3184 | } | |
3185 | ||
3186 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3187 | int | |
fba45db2 | 3188 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3189 | { |
075f6582 DJ |
3190 | struct bp_location *bpt; |
3191 | ALL_BP_LOCATIONS (bpt) | |
468d015d | 3192 | if (breakpoint_enabled (bpt->owner) |
075f6582 DJ |
3193 | && bpt->inserted |
3194 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3195 | return 1; |
c906108c SS |
3196 | return 0; |
3197 | } | |
c906108c | 3198 | \f |
c5aa993b | 3199 | |
c906108c SS |
3200 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3201 | function returns another bpstat which contains only the catchpoints | |
3202 | on that first list, if any. */ | |
3203 | void | |
fba45db2 | 3204 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3205 | { |
3206 | struct bpstats root_bs[1]; | |
3207 | bpstat bs = root_bs; | |
3208 | struct breakpoint *ep; | |
3209 | char *dll_pathname; | |
3210 | ||
c906108c SS |
3211 | bpstat_clear (cp_list); |
3212 | root_bs->next = NULL; | |
c5aa993b JM |
3213 | |
3214 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3215 | { |
3216 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3217 | ep = ep_list->breakpoint_at; | |
3218 | if (ep == NULL) | |
c5aa993b JM |
3219 | break; |
3220 | if ((ep->type != bp_catch_load) && | |
3221 | (ep->type != bp_catch_unload) && | |
3222 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3223 | (ep->type != bp_catch_throw)) |
3224 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3225 | continue; |
3226 | ||
c906108c SS |
3227 | /* Yes; add it to the list. */ |
3228 | bs = bpstat_alloc (ep, bs); | |
3229 | *bs = *ep_list; | |
3230 | bs->next = NULL; | |
3231 | bs = root_bs->next; | |
c5aa993b | 3232 | |
c906108c SS |
3233 | #if defined(SOLIB_ADD) |
3234 | /* Also, for each triggered catchpoint, tag it with the name of | |
3235 | the library that caused this trigger. (We copy the name now, | |
3236 | because it's only guaranteed to be available NOW, when the | |
3237 | catchpoint triggers. Clients who may wish to know the name | |
3238 | later must get it from the catchpoint itself.) */ | |
3239 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3240 | xfree (ep->triggered_dll_pathname); |
c906108c | 3241 | if (ep->type == bp_catch_load) |
39f77062 KB |
3242 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3243 | PIDGET (inferior_ptid)); | |
c906108c | 3244 | else |
39f77062 KB |
3245 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3246 | PIDGET (inferior_ptid)); | |
c906108c SS |
3247 | #else |
3248 | dll_pathname = NULL; | |
3249 | #endif | |
3250 | if (dll_pathname) | |
3251 | { | |
53a5351d JM |
3252 | ep->triggered_dll_pathname = (char *) |
3253 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3254 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3255 | } | |
3256 | else | |
3257 | ep->triggered_dll_pathname = NULL; | |
3258 | } | |
c5aa993b | 3259 | |
c906108c SS |
3260 | *cp_list = bs; |
3261 | } | |
3262 | ||
c4093a6a | 3263 | /* Print B to gdb_stdout. */ |
c906108c | 3264 | static void |
c4093a6a JM |
3265 | print_one_breakpoint (struct breakpoint *b, |
3266 | CORE_ADDR *last_addr) | |
c906108c | 3267 | { |
52f0bd74 AC |
3268 | struct command_line *l; |
3269 | struct symbol *sym; | |
c4093a6a JM |
3270 | struct ep_type_description |
3271 | { | |
3272 | enum bptype type; | |
3273 | char *description; | |
3274 | }; | |
3275 | static struct ep_type_description bptypes[] = | |
c906108c | 3276 | { |
c5aa993b JM |
3277 | {bp_none, "?deleted?"}, |
3278 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3279 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3280 | {bp_until, "until"}, |
3281 | {bp_finish, "finish"}, | |
3282 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3283 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3284 | {bp_read_watchpoint, "read watchpoint"}, |
3285 | {bp_access_watchpoint, "acc watchpoint"}, | |
3286 | {bp_longjmp, "longjmp"}, | |
3287 | {bp_longjmp_resume, "longjmp resume"}, | |
3288 | {bp_step_resume, "step resume"}, | |
3289 | {bp_through_sigtramp, "sigtramp"}, | |
3290 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3291 | {bp_call_dummy, "call dummy"}, | |
3292 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3293 | {bp_thread_event, "thread events"}, |
1900040c | 3294 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3295 | {bp_catch_load, "catch load"}, |
3296 | {bp_catch_unload, "catch unload"}, | |
3297 | {bp_catch_fork, "catch fork"}, | |
3298 | {bp_catch_vfork, "catch vfork"}, | |
3299 | {bp_catch_exec, "catch exec"}, | |
3300 | {bp_catch_catch, "catch catch"}, | |
3301 | {bp_catch_throw, "catch throw"} | |
3302 | }; | |
c4093a6a | 3303 | |
c5aa993b JM |
3304 | static char *bpdisps[] = |
3305 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3306 | static char bpenables[] = "nynny"; |
c906108c | 3307 | char wrap_indent[80]; |
8b93c638 JM |
3308 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3309 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3310 | struct cleanup *bkpt_chain; |
c906108c | 3311 | |
c4093a6a | 3312 | annotate_record (); |
3b31d625 | 3313 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3314 | |
3315 | /* 1 */ | |
3316 | annotate_field (0); | |
8b93c638 | 3317 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3318 | |
3319 | /* 2 */ | |
3320 | annotate_field (1); | |
3321 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3322 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3323 | internal_error (__FILE__, __LINE__, |
3324 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3325 | (int) b->type); |
8b93c638 | 3326 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3327 | |
3328 | /* 3 */ | |
3329 | annotate_field (2); | |
8b93c638 | 3330 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3331 | |
3332 | /* 4 */ | |
3333 | annotate_field (3); | |
b5de0fa7 | 3334 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3335 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3336 | |
3337 | /* 5 and 6 */ | |
3338 | strcpy (wrap_indent, " "); | |
3339 | if (addressprint) | |
75ac9d7b MS |
3340 | { |
3341 | if (TARGET_ADDR_BIT <= 32) | |
3342 | strcat (wrap_indent, " "); | |
3343 | else | |
3344 | strcat (wrap_indent, " "); | |
3345 | } | |
c906108c | 3346 | |
3086aeae DJ |
3347 | if (b->ops != NULL && b->ops->print_one != NULL) |
3348 | b->ops->print_one (b, last_addr); | |
3349 | else | |
3350 | switch (b->type) | |
3351 | { | |
3352 | case bp_none: | |
3353 | internal_error (__FILE__, __LINE__, | |
3354 | "print_one_breakpoint: bp_none encountered\n"); | |
3355 | break; | |
c906108c | 3356 | |
3086aeae DJ |
3357 | case bp_watchpoint: |
3358 | case bp_hardware_watchpoint: | |
3359 | case bp_read_watchpoint: | |
3360 | case bp_access_watchpoint: | |
3361 | /* Field 4, the address, is omitted (which makes the columns | |
3362 | not line up too nicely with the headers, but the effect | |
3363 | is relatively readable). */ | |
3364 | if (addressprint) | |
3365 | ui_out_field_skip (uiout, "addr"); | |
3366 | annotate_field (5); | |
3367 | print_expression (b->exp, stb->stream); | |
3368 | ui_out_field_stream (uiout, "what", stb); | |
3369 | break; | |
3370 | ||
3371 | case bp_catch_load: | |
3372 | case bp_catch_unload: | |
3373 | /* Field 4, the address, is omitted (which makes the columns | |
3374 | not line up too nicely with the headers, but the effect | |
3375 | is relatively readable). */ | |
3376 | if (addressprint) | |
3377 | ui_out_field_skip (uiout, "addr"); | |
3378 | annotate_field (5); | |
3379 | if (b->dll_pathname == NULL) | |
3380 | { | |
3381 | ui_out_field_string (uiout, "what", "<any library>"); | |
3382 | ui_out_spaces (uiout, 1); | |
3383 | } | |
3384 | else | |
3385 | { | |
3386 | ui_out_text (uiout, "library \""); | |
3387 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3388 | ui_out_text (uiout, "\" "); | |
3389 | } | |
3390 | break; | |
3391 | ||
3392 | case bp_catch_fork: | |
3393 | case bp_catch_vfork: | |
3394 | /* Field 4, the address, is omitted (which makes the columns | |
3395 | not line up too nicely with the headers, but the effect | |
3396 | is relatively readable). */ | |
3397 | if (addressprint) | |
3398 | ui_out_field_skip (uiout, "addr"); | |
3399 | annotate_field (5); | |
3400 | if (b->forked_inferior_pid != 0) | |
3401 | { | |
3402 | ui_out_text (uiout, "process "); | |
3403 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3404 | ui_out_spaces (uiout, 1); | |
3405 | } | |
3406 | ||
3407 | case bp_catch_exec: | |
3408 | /* Field 4, the address, is omitted (which makes the columns | |
3409 | not line up too nicely with the headers, but the effect | |
3410 | is relatively readable). */ | |
3411 | if (addressprint) | |
3412 | ui_out_field_skip (uiout, "addr"); | |
3413 | annotate_field (5); | |
3414 | if (b->exec_pathname != NULL) | |
3415 | { | |
3416 | ui_out_text (uiout, "program \""); | |
3417 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3418 | ui_out_text (uiout, "\" "); | |
3419 | } | |
3420 | break; | |
3421 | ||
3422 | case bp_catch_catch: | |
3423 | /* Field 4, the address, is omitted (which makes the columns | |
3424 | not line up too nicely with the headers, but the effect | |
3425 | is relatively readable). */ | |
3426 | if (addressprint) | |
3427 | ui_out_field_skip (uiout, "addr"); | |
3428 | annotate_field (5); | |
3429 | ui_out_field_string (uiout, "what", "exception catch"); | |
3430 | ui_out_spaces (uiout, 1); | |
3431 | break; | |
3432 | ||
3433 | case bp_catch_throw: | |
3434 | /* Field 4, the address, is omitted (which makes the columns | |
3435 | not line up too nicely with the headers, but the effect | |
3436 | is relatively readable). */ | |
3437 | if (addressprint) | |
3438 | ui_out_field_skip (uiout, "addr"); | |
3439 | annotate_field (5); | |
3440 | ui_out_field_string (uiout, "what", "exception throw"); | |
3441 | ui_out_spaces (uiout, 1); | |
3442 | break; | |
3443 | ||
3444 | case bp_breakpoint: | |
3445 | case bp_hardware_breakpoint: | |
3446 | case bp_until: | |
3447 | case bp_finish: | |
3448 | case bp_longjmp: | |
3449 | case bp_longjmp_resume: | |
3450 | case bp_step_resume: | |
3451 | case bp_through_sigtramp: | |
3452 | case bp_watchpoint_scope: | |
3453 | case bp_call_dummy: | |
3454 | case bp_shlib_event: | |
3455 | case bp_thread_event: | |
3456 | case bp_overlay_event: | |
3457 | if (addressprint) | |
3458 | { | |
3459 | annotate_field (4); | |
0101ce28 | 3460 | if (b->pending) |
d5479188 | 3461 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 JJ |
3462 | else |
3463 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
3464 | } |
3465 | annotate_field (5); | |
5cab636d | 3466 | *last_addr = b->loc->address; |
3086aeae DJ |
3467 | if (b->source_file) |
3468 | { | |
cf3a9e5b | 3469 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3470 | if (sym) |
3471 | { | |
3472 | ui_out_text (uiout, "in "); | |
3473 | ui_out_field_string (uiout, "func", | |
3474 | SYMBOL_PRINT_NAME (sym)); | |
3475 | ui_out_wrap_hint (uiout, wrap_indent); | |
3476 | ui_out_text (uiout, " at "); | |
3477 | } | |
3478 | ui_out_field_string (uiout, "file", b->source_file); | |
3479 | ui_out_text (uiout, ":"); | |
3480 | ui_out_field_int (uiout, "line", b->line_number); | |
3481 | } | |
0101ce28 JJ |
3482 | else if (b->pending) |
3483 | { | |
3484 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3485 | } | |
3086aeae DJ |
3486 | else |
3487 | { | |
5cab636d | 3488 | print_address_symbolic (b->loc->address, stb->stream, demangle, ""); |
3086aeae DJ |
3489 | ui_out_field_stream (uiout, "at", stb); |
3490 | } | |
3491 | break; | |
3492 | } | |
c906108c | 3493 | |
c4093a6a JM |
3494 | if (b->thread != -1) |
3495 | { | |
8b93c638 JM |
3496 | /* FIXME: This seems to be redundant and lost here; see the |
3497 | "stop only in" line a little further down. */ | |
3498 | ui_out_text (uiout, " thread "); | |
3499 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3500 | } |
3501 | ||
8b93c638 | 3502 | ui_out_text (uiout, "\n"); |
c4093a6a | 3503 | |
818dd999 | 3504 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3505 | { |
3506 | annotate_field (6); | |
8b93c638 | 3507 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3508 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3509 | the frame ID. */ | |
d0a55772 | 3510 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3511 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3512 | } |
3513 | ||
3514 | if (b->cond) | |
3515 | { | |
3516 | annotate_field (7); | |
8b93c638 JM |
3517 | ui_out_text (uiout, "\tstop only if "); |
3518 | print_expression (b->cond, stb->stream); | |
3519 | ui_out_field_stream (uiout, "cond", stb); | |
3520 | ui_out_text (uiout, "\n"); | |
c4093a6a | 3521 | } |
0101ce28 JJ |
3522 | |
3523 | if (b->pending && b->cond_string) | |
3524 | { | |
3525 | annotate_field (7); | |
3526 | ui_out_text (uiout, "\tstop only if "); | |
3527 | ui_out_field_string (uiout, "cond", b->cond_string); | |
3528 | ui_out_text (uiout, "\n"); | |
3529 | } | |
3530 | ||
c4093a6a JM |
3531 | if (b->thread != -1) |
3532 | { | |
3533 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3534 | ui_out_text (uiout, "\tstop only in thread "); |
3535 | ui_out_field_int (uiout, "thread", b->thread); | |
3536 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3537 | } |
3538 | ||
3539 | if (show_breakpoint_hit_counts && b->hit_count) | |
3540 | { | |
3541 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3542 | if (ep_is_catchpoint (b)) |
3543 | ui_out_text (uiout, "\tcatchpoint"); | |
3544 | else | |
3545 | ui_out_text (uiout, "\tbreakpoint"); | |
3546 | ui_out_text (uiout, " already hit "); | |
3547 | ui_out_field_int (uiout, "times", b->hit_count); | |
3548 | if (b->hit_count == 1) | |
3549 | ui_out_text (uiout, " time\n"); | |
3550 | else | |
3551 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3552 | } |
3553 | ||
fb40c209 AC |
3554 | /* Output the count also if it is zero, but only if this is |
3555 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3556 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3557 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3558 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3559 | |
c4093a6a JM |
3560 | if (b->ignore_count) |
3561 | { | |
3562 | annotate_field (8); | |
8b93c638 JM |
3563 | ui_out_text (uiout, "\tignore next "); |
3564 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3565 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3566 | } |
3567 | ||
3568 | if ((l = b->commands)) | |
3569 | { | |
3b31d625 EZ |
3570 | struct cleanup *script_chain; |
3571 | ||
c4093a6a | 3572 | annotate_field (9); |
3b31d625 | 3573 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3574 | print_command_lines (uiout, l, 4); |
3b31d625 | 3575 | do_cleanups (script_chain); |
c4093a6a | 3576 | } |
3b31d625 | 3577 | do_cleanups (bkpt_chain); |
8b93c638 | 3578 | do_cleanups (old_chain); |
c4093a6a | 3579 | } |
c5aa993b | 3580 | |
c4093a6a JM |
3581 | struct captured_breakpoint_query_args |
3582 | { | |
3583 | int bnum; | |
3584 | }; | |
c5aa993b | 3585 | |
c4093a6a | 3586 | static int |
2b65245e | 3587 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3588 | { |
3589 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3590 | struct breakpoint *b; |
c4093a6a JM |
3591 | CORE_ADDR dummy_addr = 0; |
3592 | ALL_BREAKPOINTS (b) | |
3593 | { | |
3594 | if (args->bnum == b->number) | |
c5aa993b | 3595 | { |
c4093a6a JM |
3596 | print_one_breakpoint (b, &dummy_addr); |
3597 | return GDB_RC_OK; | |
c5aa993b | 3598 | } |
c4093a6a JM |
3599 | } |
3600 | return GDB_RC_NONE; | |
3601 | } | |
c5aa993b | 3602 | |
c4093a6a | 3603 | enum gdb_rc |
ce43223b | 3604 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3605 | { |
3606 | struct captured_breakpoint_query_args args; | |
3607 | args.bnum = bnum; | |
3608 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3609 | an error. */ | |
ce43223b AC |
3610 | return catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3611 | NULL, error_message, RETURN_MASK_ALL); | |
c4093a6a | 3612 | } |
c5aa993b | 3613 | |
7f3b0473 AC |
3614 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3615 | catchpoints, et.al.). */ | |
3616 | ||
3617 | static int | |
3618 | user_settable_breakpoint (const struct breakpoint *b) | |
3619 | { | |
3620 | return (b->type == bp_breakpoint | |
3621 | || b->type == bp_catch_load | |
3622 | || b->type == bp_catch_unload | |
3623 | || b->type == bp_catch_fork | |
3624 | || b->type == bp_catch_vfork | |
3625 | || b->type == bp_catch_exec | |
3626 | || b->type == bp_catch_catch | |
3627 | || b->type == bp_catch_throw | |
3628 | || b->type == bp_hardware_breakpoint | |
3629 | || b->type == bp_watchpoint | |
3630 | || b->type == bp_read_watchpoint | |
3631 | || b->type == bp_access_watchpoint | |
3632 | || b->type == bp_hardware_watchpoint); | |
3633 | } | |
3634 | ||
3635 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3636 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3637 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3638 | |
c4093a6a | 3639 | static void |
fba45db2 | 3640 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3641 | { |
52f0bd74 | 3642 | struct breakpoint *b; |
c4093a6a | 3643 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3644 | int nr_printable_breakpoints; |
3b31d625 | 3645 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3646 | |
7f3b0473 AC |
3647 | /* Compute the number of rows in the table. */ |
3648 | nr_printable_breakpoints = 0; | |
3649 | ALL_BREAKPOINTS (b) | |
3650 | if (bnum == -1 | |
3651 | || bnum == b->number) | |
3652 | { | |
3653 | if (allflag || user_settable_breakpoint (b)) | |
3654 | nr_printable_breakpoints++; | |
3655 | } | |
3656 | ||
8b93c638 | 3657 | if (addressprint) |
3b31d625 EZ |
3658 | bkpttbl_chain |
3659 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3660 | "BreakpointTable"); | |
8b93c638 | 3661 | else |
3b31d625 EZ |
3662 | bkpttbl_chain |
3663 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3664 | "BreakpointTable"); | |
8b93c638 | 3665 | |
7f3b0473 | 3666 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3667 | annotate_breakpoints_headers (); |
3668 | if (nr_printable_breakpoints > 0) | |
3669 | annotate_field (0); | |
3670 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3671 | if (nr_printable_breakpoints > 0) | |
3672 | annotate_field (1); | |
3673 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3674 | if (nr_printable_breakpoints > 0) | |
3675 | annotate_field (2); | |
3676 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3677 | if (nr_printable_breakpoints > 0) | |
3678 | annotate_field (3); | |
3679 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3680 | if (addressprint) | |
7f3b0473 | 3681 | { |
d7faa9e7 AC |
3682 | if (nr_printable_breakpoints > 0) |
3683 | annotate_field (4); | |
7f3b0473 | 3684 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3685 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3686 | else |
b25959ec | 3687 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3688 | } |
d7faa9e7 AC |
3689 | if (nr_printable_breakpoints > 0) |
3690 | annotate_field (5); | |
3691 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3692 | ui_out_table_body (uiout); | |
3693 | if (nr_printable_breakpoints > 0) | |
3694 | annotate_breakpoints_table (); | |
7f3b0473 | 3695 | |
c4093a6a JM |
3696 | ALL_BREAKPOINTS (b) |
3697 | if (bnum == -1 | |
3698 | || bnum == b->number) | |
3699 | { | |
3700 | /* We only print out user settable breakpoints unless the | |
3701 | allflag is set. */ | |
7f3b0473 AC |
3702 | if (allflag || user_settable_breakpoint (b)) |
3703 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3704 | } |
3705 | ||
3b31d625 | 3706 | do_cleanups (bkpttbl_chain); |
698384cd | 3707 | |
7f3b0473 | 3708 | if (nr_printable_breakpoints == 0) |
c906108c | 3709 | { |
8b93c638 JM |
3710 | if (bnum == -1) |
3711 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3712 | else | |
3713 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3714 | bnum); | |
c906108c SS |
3715 | } |
3716 | else | |
c4093a6a JM |
3717 | { |
3718 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3719 | that a comparison of an unsigned with -1 is always false. */ | |
3720 | if (last_addr != (CORE_ADDR) -1) | |
3721 | set_next_address (last_addr); | |
3722 | } | |
c906108c | 3723 | |
c4093a6a JM |
3724 | /* FIXME? Should this be moved up so that it is only called when |
3725 | there have been breakpoints? */ | |
c906108c SS |
3726 | annotate_breakpoints_table_end (); |
3727 | } | |
3728 | ||
c906108c | 3729 | static void |
fba45db2 | 3730 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3731 | { |
3732 | int bnum = -1; | |
3733 | ||
3734 | if (bnum_exp) | |
bb518678 | 3735 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3736 | |
3737 | breakpoint_1 (bnum, 0); | |
3738 | } | |
3739 | ||
7a292a7a | 3740 | static void |
fba45db2 | 3741 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3742 | { |
3743 | int bnum = -1; | |
3744 | ||
3745 | if (bnum_exp) | |
bb518678 | 3746 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3747 | |
3748 | breakpoint_1 (bnum, 1); | |
3749 | } | |
3750 | ||
c906108c SS |
3751 | /* Print a message describing any breakpoints set at PC. */ |
3752 | ||
3753 | static void | |
fba45db2 | 3754 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c | 3755 | { |
52f0bd74 AC |
3756 | int others = 0; |
3757 | struct breakpoint *b; | |
c906108c SS |
3758 | |
3759 | ALL_BREAKPOINTS (b) | |
5cab636d | 3760 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3761 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 | 3762 | others++; |
c906108c SS |
3763 | if (others > 0) |
3764 | { | |
3765 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3766 | ALL_BREAKPOINTS (b) | |
5cab636d | 3767 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3768 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 MS |
3769 | { |
3770 | others--; | |
3771 | printf_filtered ("%d%s%s ", | |
3772 | b->number, | |
3773 | ((b->enable_state == bp_disabled || | |
3774 | b->enable_state == bp_shlib_disabled || | |
3775 | b->enable_state == bp_call_disabled) | |
3776 | ? " (disabled)" | |
3777 | : b->enable_state == bp_permanent | |
3778 | ? " (permanent)" | |
3779 | : ""), | |
3780 | (others > 1) ? "," | |
3781 | : ((others == 1) ? " and" : "")); | |
3782 | } | |
c906108c SS |
3783 | printf_filtered ("also set at pc "); |
3784 | print_address_numeric (pc, 1, gdb_stdout); | |
3785 | printf_filtered (".\n"); | |
3786 | } | |
3787 | } | |
3788 | \f | |
3789 | /* Set the default place to put a breakpoint | |
3790 | for the `break' command with no arguments. */ | |
3791 | ||
3792 | void | |
fba45db2 KB |
3793 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3794 | int line) | |
c906108c SS |
3795 | { |
3796 | default_breakpoint_valid = valid; | |
3797 | default_breakpoint_address = addr; | |
3798 | default_breakpoint_symtab = symtab; | |
3799 | default_breakpoint_line = line; | |
3800 | } | |
3801 | ||
e4f237da KB |
3802 | /* Return true iff it is meaningful to use the address member of |
3803 | BPT. For some breakpoint types, the address member is irrelevant | |
3804 | and it makes no sense to attempt to compare it to other addresses | |
3805 | (or use it for any other purpose either). | |
3806 | ||
3807 | More specifically, each of the following breakpoint types will always | |
3808 | have a zero valued address and we don't want check_duplicates() to mark | |
3809 | breakpoints of any of these types to be a duplicate of an actual | |
3810 | breakpoint at address zero: | |
3811 | ||
3812 | bp_watchpoint | |
3813 | bp_hardware_watchpoint | |
3814 | bp_read_watchpoint | |
3815 | bp_access_watchpoint | |
3816 | bp_catch_exec | |
3817 | bp_longjmp_resume | |
3818 | bp_catch_fork | |
3819 | bp_catch_vork */ | |
3820 | ||
3821 | static int | |
3822 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3823 | { | |
3824 | enum bptype type = bpt->type; | |
3825 | ||
3826 | return (type != bp_watchpoint | |
3827 | && type != bp_hardware_watchpoint | |
3828 | && type != bp_read_watchpoint | |
3829 | && type != bp_access_watchpoint | |
3830 | && type != bp_catch_exec | |
3831 | && type != bp_longjmp_resume | |
3832 | && type != bp_catch_fork | |
3833 | && type != bp_catch_vfork); | |
3834 | } | |
3835 | ||
9f60f21b | 3836 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3837 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3838 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3839 | If we have a permanent breakpoint at the same place as BPT, make |
3840 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3841 | |
3842 | static void | |
9f60f21b | 3843 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3844 | { |
075f6582 | 3845 | struct bp_location *b; |
52f0bd74 | 3846 | int count = 0; |
075f6582 | 3847 | struct bp_location *perm_bp = 0; |
5cab636d | 3848 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 3849 | asection *section = bpt->loc->section; |
c906108c | 3850 | |
e4f237da | 3851 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3852 | return; |
3853 | ||
075f6582 DJ |
3854 | ALL_BP_LOCATIONS (b) |
3855 | if (b->owner->enable_state != bp_disabled | |
3856 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3857 | && !b->owner->pending |
075f6582 DJ |
3858 | && b->owner->enable_state != bp_call_disabled |
3859 | && b->address == address /* address / overlay match */ | |
3860 | && (!overlay_debugging || b->section == section) | |
3861 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3862 | { |
c2c6d25f | 3863 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3864 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3865 | { |
3866 | perm_bp = b; | |
3867 | break; | |
3868 | } | |
3869 | ||
c5aa993b | 3870 | count++; |
075f6582 | 3871 | b->duplicate = count > 1; |
c5aa993b | 3872 | } |
c2c6d25f JM |
3873 | |
3874 | /* If we found a permanent breakpoint at this address, go over the | |
3875 | list again and declare all the other breakpoints there to be the | |
3876 | duplicates. */ | |
3877 | if (perm_bp) | |
3878 | { | |
075f6582 | 3879 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3880 | |
3881 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3882 | if (! perm_bp->inserted) |
8e65ff28 AC |
3883 | internal_error (__FILE__, __LINE__, |
3884 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3885 | "actually inserted"); |
3886 | ||
075f6582 | 3887 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3888 | if (b != perm_bp) |
3889 | { | |
075f6582 DJ |
3890 | if (b->owner->enable_state != bp_disabled |
3891 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3892 | && !b->owner->pending |
075f6582 DJ |
3893 | && b->owner->enable_state != bp_call_disabled |
3894 | && b->address == address /* address / overlay match */ | |
3895 | && (!overlay_debugging || b->section == section) | |
3896 | && breakpoint_address_is_meaningful (b->owner)) | |
3897 | { | |
3898 | if (b->inserted) | |
3899 | internal_error (__FILE__, __LINE__, | |
3900 | "another breakpoint was inserted on top of " | |
3901 | "a permanent breakpoint"); | |
3902 | ||
3903 | b->duplicate = 1; | |
3904 | } | |
c2c6d25f JM |
3905 | } |
3906 | } | |
c906108c SS |
3907 | } |
3908 | ||
76897487 KB |
3909 | static void |
3910 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
3911 | int bnum, int have_bnum) | |
3912 | { | |
3913 | char astr1[40]; | |
3914 | char astr2[40]; | |
3915 | ||
bb599908 PH |
3916 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
3917 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 KB |
3918 | if (have_bnum) |
3919 | warning ("Breakpoint %d address previously adjusted from %s to %s.", | |
3920 | bnum, astr1, astr2); | |
3921 | else | |
3922 | warning ("Breakpoint address adjusted from %s to %s.", astr1, astr2); | |
3923 | } | |
3924 | ||
3925 | /* Adjust a breakpoint's address to account for architectural constraints | |
3926 | on breakpoint placement. Return the adjusted address. Note: Very | |
3927 | few targets require this kind of adjustment. For most targets, | |
3928 | this function is simply the identity function. */ | |
3929 | ||
3930 | static CORE_ADDR | |
88f7da05 | 3931 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
3932 | { |
3933 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
3934 | { | |
3935 | /* Very few targets need any kind of breakpoint adjustment. */ | |
3936 | return bpaddr; | |
3937 | } | |
88f7da05 KB |
3938 | else if (bptype == bp_watchpoint |
3939 | || bptype == bp_hardware_watchpoint | |
3940 | || bptype == bp_read_watchpoint | |
3941 | || bptype == bp_access_watchpoint | |
3942 | || bptype == bp_catch_fork | |
3943 | || bptype == bp_catch_vfork | |
3944 | || bptype == bp_catch_exec) | |
3945 | { | |
3946 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
3947 | have their addresses modified. */ | |
3948 | return bpaddr; | |
3949 | } | |
76897487 KB |
3950 | else |
3951 | { | |
3952 | CORE_ADDR adjusted_bpaddr; | |
3953 | ||
3954 | /* Some targets have architectural constraints on the placement | |
3955 | of breakpoint instructions. Obtain the adjusted address. */ | |
3956 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
3957 | bpaddr); | |
3958 | ||
3959 | /* An adjusted breakpoint address can significantly alter | |
3960 | a user's expectations. Print a warning if an adjustment | |
3961 | is required. */ | |
3962 | if (adjusted_bpaddr != bpaddr) | |
3963 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
3964 | ||
3965 | return adjusted_bpaddr; | |
3966 | } | |
3967 | } | |
3968 | ||
7cc221ef DJ |
3969 | /* Allocate a struct bp_location. */ |
3970 | ||
26bb91f3 | 3971 | static struct bp_location * |
e049a4b5 | 3972 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
3973 | { |
3974 | struct bp_location *loc, *loc_p; | |
3975 | ||
3976 | loc = xmalloc (sizeof (struct bp_location)); | |
3977 | memset (loc, 0, sizeof (*loc)); | |
3978 | ||
e049a4b5 DJ |
3979 | loc->owner = bpt; |
3980 | ||
3981 | switch (bp_type) | |
3982 | { | |
3983 | case bp_breakpoint: | |
3984 | case bp_until: | |
3985 | case bp_finish: | |
3986 | case bp_longjmp: | |
3987 | case bp_longjmp_resume: | |
3988 | case bp_step_resume: | |
3989 | case bp_through_sigtramp: | |
3990 | case bp_watchpoint_scope: | |
3991 | case bp_call_dummy: | |
3992 | case bp_shlib_event: | |
3993 | case bp_thread_event: | |
3994 | case bp_overlay_event: | |
3995 | case bp_catch_load: | |
3996 | case bp_catch_unload: | |
3997 | loc->loc_type = bp_loc_software_breakpoint; | |
3998 | break; | |
3999 | case bp_hardware_breakpoint: | |
4000 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4001 | break; | |
4002 | case bp_hardware_watchpoint: | |
4003 | case bp_read_watchpoint: | |
4004 | case bp_access_watchpoint: | |
4005 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4006 | break; | |
4007 | case bp_watchpoint: | |
4008 | case bp_catch_fork: | |
4009 | case bp_catch_vfork: | |
4010 | case bp_catch_exec: | |
4011 | case bp_catch_catch: | |
4012 | case bp_catch_throw: | |
4013 | loc->loc_type = bp_loc_other; | |
4014 | break; | |
4015 | default: | |
4016 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); | |
4017 | } | |
4018 | ||
7cc221ef DJ |
4019 | /* Add this breakpoint to the end of the chain. */ |
4020 | ||
4021 | loc_p = bp_location_chain; | |
4022 | if (loc_p == 0) | |
4023 | bp_location_chain = loc; | |
4024 | else | |
4025 | { | |
4026 | while (loc_p->next) | |
4027 | loc_p = loc_p->next; | |
4028 | loc_p->next = loc; | |
4029 | } | |
4030 | ||
4031 | return loc; | |
4032 | } | |
4033 | ||
4d28f7a8 KB |
4034 | /* set_raw_breakpoint() is a low level routine for allocating and |
4035 | partially initializing a breakpoint of type BPTYPE. The newly | |
4036 | created breakpoint's address, section, source file name, and line | |
4037 | number are provided by SAL. The newly created and partially | |
4038 | initialized breakpoint is added to the breakpoint chain and | |
4039 | is also returned as the value of this function. | |
c906108c | 4040 | |
4d28f7a8 KB |
4041 | It is expected that the caller will complete the initialization of |
4042 | the newly created breakpoint struct as well as output any status | |
4043 | information regarding the creation of a new breakpoint. In | |
4044 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4045 | number! Care should be taken to not allow an error() to occur | |
4046 | prior to completing the initialization of the breakpoint. If this | |
4047 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4048 | |
4049 | struct breakpoint * | |
4d28f7a8 | 4050 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4051 | { |
52f0bd74 | 4052 | struct breakpoint *b, *b1; |
c906108c SS |
4053 | |
4054 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4055 | memset (b, 0, sizeof (*b)); | |
e049a4b5 | 4056 | b->loc = allocate_bp_location (b, bptype); |
5cab636d | 4057 | b->loc->requested_address = sal.pc; |
88f7da05 KB |
4058 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4059 | bptype); | |
c906108c SS |
4060 | if (sal.symtab == NULL) |
4061 | b->source_file = NULL; | |
4062 | else | |
4063 | b->source_file = savestring (sal.symtab->filename, | |
4064 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4065 | b->loc->section = sal.section; |
4d28f7a8 | 4066 | b->type = bptype; |
c906108c SS |
4067 | b->language = current_language->la_language; |
4068 | b->input_radix = input_radix; | |
4069 | b->thread = -1; | |
4070 | b->line_number = sal.line; | |
b5de0fa7 | 4071 | b->enable_state = bp_enabled; |
c906108c SS |
4072 | b->next = 0; |
4073 | b->silent = 0; | |
4074 | b->ignore_count = 0; | |
4075 | b->commands = NULL; | |
818dd999 | 4076 | b->frame_id = null_frame_id; |
c906108c SS |
4077 | b->dll_pathname = NULL; |
4078 | b->triggered_dll_pathname = NULL; | |
4079 | b->forked_inferior_pid = 0; | |
4080 | b->exec_pathname = NULL; | |
3086aeae | 4081 | b->ops = NULL; |
0101ce28 | 4082 | b->pending = 0; |
c906108c SS |
4083 | |
4084 | /* Add this breakpoint to the end of the chain | |
4085 | so that a list of breakpoints will come out in order | |
4086 | of increasing numbers. */ | |
4087 | ||
4088 | b1 = breakpoint_chain; | |
4089 | if (b1 == 0) | |
4090 | breakpoint_chain = b; | |
4091 | else | |
4092 | { | |
4093 | while (b1->next) | |
4094 | b1 = b1->next; | |
4095 | b1->next = b; | |
4096 | } | |
4097 | ||
9f60f21b | 4098 | check_duplicates (b); |
c906108c SS |
4099 | breakpoints_changed (); |
4100 | ||
4101 | return b; | |
4102 | } | |
4103 | ||
c2c6d25f JM |
4104 | |
4105 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4106 | instruction, hard-wired into the inferior's code. */ | |
4107 | void | |
4108 | make_breakpoint_permanent (struct breakpoint *b) | |
4109 | { | |
b5de0fa7 | 4110 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4111 | |
4112 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4113 | b->loc->inserted = 1; |
c2c6d25f JM |
4114 | } |
4115 | ||
1900040c MS |
4116 | static struct breakpoint * |
4117 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4118 | { | |
4119 | static int internal_breakpoint_number = -1; | |
4120 | struct symtab_and_line sal; | |
4121 | struct breakpoint *b; | |
4122 | ||
fe39c653 | 4123 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4124 | |
4125 | sal.pc = address; | |
4126 | sal.section = find_pc_overlay (sal.pc); | |
4127 | ||
4128 | b = set_raw_breakpoint (sal, type); | |
4129 | b->number = internal_breakpoint_number--; | |
4130 | b->disposition = disp_donttouch; | |
4131 | ||
4132 | return b; | |
4133 | } | |
4134 | ||
c906108c SS |
4135 | |
4136 | static void | |
fba45db2 | 4137 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4138 | { |
c906108c | 4139 | struct breakpoint *b; |
1900040c | 4140 | struct minimal_symbol *m; |
c906108c | 4141 | |
1900040c MS |
4142 | if (func_name == NULL) |
4143 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4144 | else | |
c906108c | 4145 | { |
5520a790 | 4146 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4147 | return; |
1900040c MS |
4148 | |
4149 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4150 | } |
c906108c | 4151 | |
b5de0fa7 | 4152 | b->enable_state = bp_disabled; |
c906108c SS |
4153 | b->silent = 1; |
4154 | if (func_name) | |
4fcf66da | 4155 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4156 | } |
4157 | ||
53a5351d JM |
4158 | /* Call this routine when stepping and nexting to enable a breakpoint |
4159 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4160 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4161 | ||
4162 | void | |
fba45db2 | 4163 | enable_longjmp_breakpoint (void) |
c906108c | 4164 | { |
52f0bd74 | 4165 | struct breakpoint *b; |
c906108c SS |
4166 | |
4167 | ALL_BREAKPOINTS (b) | |
4168 | if (b->type == bp_longjmp) | |
c5aa993b | 4169 | { |
b5de0fa7 | 4170 | b->enable_state = bp_enabled; |
9f60f21b | 4171 | check_duplicates (b); |
c5aa993b | 4172 | } |
c906108c SS |
4173 | } |
4174 | ||
4175 | void | |
fba45db2 | 4176 | disable_longjmp_breakpoint (void) |
c906108c | 4177 | { |
52f0bd74 | 4178 | struct breakpoint *b; |
c906108c SS |
4179 | |
4180 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4181 | if (b->type == bp_longjmp |
c906108c | 4182 | || b->type == bp_longjmp_resume) |
c5aa993b | 4183 | { |
b5de0fa7 | 4184 | b->enable_state = bp_disabled; |
9f60f21b | 4185 | check_duplicates (b); |
c5aa993b | 4186 | } |
c906108c SS |
4187 | } |
4188 | ||
1900040c MS |
4189 | static void |
4190 | create_overlay_event_breakpoint (char *func_name) | |
4191 | { | |
4192 | struct breakpoint *b; | |
4193 | struct minimal_symbol *m; | |
4194 | ||
5520a790 | 4195 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4196 | return; |
4197 | ||
4198 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4199 | bp_overlay_event); | |
4200 | b->addr_string = xstrdup (func_name); | |
4201 | ||
4202 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4203 | { |
4204 | b->enable_state = bp_enabled; | |
4205 | overlay_events_enabled = 1; | |
4206 | } | |
1900040c | 4207 | else |
c02f5703 MS |
4208 | { |
4209 | b->enable_state = bp_disabled; | |
4210 | overlay_events_enabled = 0; | |
4211 | } | |
1900040c MS |
4212 | } |
4213 | ||
4214 | void | |
4215 | enable_overlay_breakpoints (void) | |
4216 | { | |
52f0bd74 | 4217 | struct breakpoint *b; |
1900040c MS |
4218 | |
4219 | ALL_BREAKPOINTS (b) | |
4220 | if (b->type == bp_overlay_event) | |
4221 | { | |
4222 | b->enable_state = bp_enabled; | |
4223 | check_duplicates (b); | |
c02f5703 | 4224 | overlay_events_enabled = 1; |
1900040c MS |
4225 | } |
4226 | } | |
4227 | ||
4228 | void | |
4229 | disable_overlay_breakpoints (void) | |
4230 | { | |
52f0bd74 | 4231 | struct breakpoint *b; |
1900040c MS |
4232 | |
4233 | ALL_BREAKPOINTS (b) | |
4234 | if (b->type == bp_overlay_event) | |
4235 | { | |
4236 | b->enable_state = bp_disabled; | |
4237 | check_duplicates (b); | |
c02f5703 | 4238 | overlay_events_enabled = 0; |
1900040c MS |
4239 | } |
4240 | } | |
4241 | ||
c4093a6a | 4242 | struct breakpoint * |
fba45db2 | 4243 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4244 | { |
4245 | struct breakpoint *b; | |
c4093a6a | 4246 | |
1900040c | 4247 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4248 | |
b5de0fa7 | 4249 | b->enable_state = bp_enabled; |
c4093a6a | 4250 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4251 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4252 | |
4253 | return b; | |
4254 | } | |
4255 | ||
4256 | void | |
4257 | remove_thread_event_breakpoints (void) | |
4258 | { | |
4259 | struct breakpoint *b, *temp; | |
4260 | ||
4261 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4262 | if (b->type == bp_thread_event) | |
4263 | delete_breakpoint (b); | |
4264 | } | |
4265 | ||
0101ce28 JJ |
4266 | struct captured_parse_breakpoint_args |
4267 | { | |
4268 | char **arg_p; | |
4269 | struct symtabs_and_lines *sals_p; | |
4270 | char ***addr_string_p; | |
4271 | int *not_found_ptr; | |
4272 | }; | |
4273 | ||
4274 | struct lang_and_radix | |
4275 | { | |
4276 | enum language lang; | |
4277 | int radix; | |
4278 | }; | |
4279 | ||
4280 | /* Cleanup helper routine to restore the current language and | |
4281 | input radix. */ | |
4282 | static void | |
4283 | do_restore_lang_radix_cleanup (void *old) | |
4284 | { | |
4285 | struct lang_and_radix *p = old; | |
4286 | set_language (p->lang); | |
4287 | input_radix = p->radix; | |
4288 | } | |
4289 | ||
4290 | /* Try and resolve a pending breakpoint. */ | |
4291 | static int | |
4292 | resolve_pending_breakpoint (struct breakpoint *b) | |
4293 | { | |
4294 | /* Try and reparse the breakpoint in case the shared library | |
4295 | is now loaded. */ | |
4296 | struct symtabs_and_lines sals; | |
4297 | struct symtab_and_line pending_sal; | |
4298 | char **cond_string = (char **) NULL; | |
4299 | char *copy_arg = b->addr_string; | |
4300 | char **addr_string; | |
4301 | char *errmsg; | |
4302 | int rc; | |
4303 | int not_found = 0; | |
4304 | struct ui_file *old_gdb_stderr; | |
4305 | struct lang_and_radix old_lr; | |
4306 | struct cleanup *old_chain; | |
4307 | ||
4308 | /* Set language, input-radix, then reissue breakpoint command. | |
4309 | Ensure the language and input-radix are restored afterwards. */ | |
4310 | old_lr.lang = current_language->la_language; | |
4311 | old_lr.radix = input_radix; | |
4312 | old_chain = make_cleanup (do_restore_lang_radix_cleanup, &old_lr); | |
4313 | ||
4314 | set_language (b->language); | |
4315 | input_radix = b->input_radix; | |
4316 | rc = break_command_1 (b->addr_string, b->flag, b->from_tty, b); | |
4317 | ||
4318 | if (rc == GDB_RC_OK) | |
4319 | /* Pending breakpoint has been resolved. */ | |
4320 | printf_filtered ("Pending breakpoint \"%s\" resolved\n", b->addr_string); | |
4321 | ||
4322 | do_cleanups (old_chain); | |
4323 | return rc; | |
4324 | } | |
4325 | ||
cae688ec JJ |
4326 | #ifdef SOLIB_ADD |
4327 | void | |
4328 | remove_solib_event_breakpoints (void) | |
4329 | { | |
4330 | struct breakpoint *b, *temp; | |
4331 | ||
4332 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4333 | if (b->type == bp_shlib_event) | |
4334 | delete_breakpoint (b); | |
4335 | } | |
4336 | ||
4337 | struct breakpoint * | |
4338 | create_solib_event_breakpoint (CORE_ADDR address) | |
4339 | { | |
4340 | struct breakpoint *b; | |
4341 | ||
4342 | b = create_internal_breakpoint (address, bp_shlib_event); | |
4343 | return b; | |
4344 | } | |
4345 | ||
4346 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4347 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4348 | ||
4349 | void | |
4350 | disable_breakpoints_in_shlibs (int silent) | |
4351 | { | |
4352 | struct breakpoint *b; | |
4353 | int disabled_shlib_breaks = 0; | |
4354 | ||
4355 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4356 | ALL_BREAKPOINTS (b) | |
4357 | { | |
4358 | #if defined (PC_SOLIB) | |
4359 | if (((b->type == bp_breakpoint) || | |
4360 | (b->type == bp_hardware_breakpoint)) && | |
4361 | breakpoint_enabled (b) && | |
4362 | !b->loc->duplicate && | |
4363 | PC_SOLIB (b->loc->address)) | |
4364 | { | |
4365 | b->enable_state = bp_shlib_disabled; | |
4366 | if (!silent) | |
4367 | { | |
4368 | if (!disabled_shlib_breaks) | |
4369 | { | |
4370 | target_terminal_ours_for_output (); | |
4371 | warning ("Temporarily disabling shared library breakpoints:"); | |
4372 | } | |
4373 | disabled_shlib_breaks = 1; | |
4374 | warning ("breakpoint #%d ", b->number); | |
4375 | } | |
4376 | } | |
4377 | #endif | |
4378 | } | |
4379 | } | |
4380 | ||
84acb35a JJ |
4381 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4382 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4383 | ||
4384 | void | |
4385 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) | |
4386 | { | |
4387 | struct breakpoint *b; | |
4388 | int disabled_shlib_breaks = 0; | |
4389 | ||
4390 | #if defined (PC_SOLIB) | |
4391 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4392 | ALL_BREAKPOINTS (b) | |
4393 | { | |
4394 | if ((b->loc->loc_type == bp_loc_hardware_breakpoint | |
4395 | || b->loc->loc_type == bp_loc_software_breakpoint) | |
4396 | && breakpoint_enabled (b) | |
4397 | && !b->loc->duplicate) | |
4398 | { | |
4399 | char *so_name = PC_SOLIB (b->loc->address); | |
4400 | if (so_name | |
4401 | && !strcmp (so_name, solib->so_name)) | |
4402 | { | |
4403 | b->enable_state = bp_shlib_disabled; | |
4404 | /* At this point, we cannot rely on remove_breakpoint | |
4405 | succeeding so we must mark the breakpoint as not inserted | |
4406 | to prevent future errors occurring in remove_breakpoints. */ | |
4407 | b->loc->inserted = 0; | |
4408 | if (!disabled_shlib_breaks) | |
4409 | { | |
4410 | target_terminal_ours_for_output (); | |
4411 | warning ("Temporarily disabling breakpoints for unloaded shared library \"%s\"", | |
4412 | so_name); | |
4413 | } | |
4414 | disabled_shlib_breaks = 1; | |
4415 | } | |
4416 | } | |
4417 | } | |
4418 | #endif | |
4419 | } | |
4420 | ||
c906108c SS |
4421 | /* Try to reenable any breakpoints in shared libraries. */ |
4422 | void | |
fba45db2 | 4423 | re_enable_breakpoints_in_shlibs (void) |
c906108c | 4424 | { |
0101ce28 | 4425 | struct breakpoint *b, *tmp; |
c906108c | 4426 | |
0101ce28 JJ |
4427 | ALL_BREAKPOINTS_SAFE (b, tmp) |
4428 | { | |
b5de0fa7 | 4429 | if (b->enable_state == bp_shlib_disabled) |
0101ce28 JJ |
4430 | { |
4431 | char buf[1], *lib; | |
4432 | ||
4433 | /* Do not reenable the breakpoint if the shared library | |
4434 | is still not mapped in. */ | |
4435 | lib = PC_SOLIB (b->loc->address); | |
4436 | if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0) | |
4437 | b->enable_state = bp_enabled; | |
4438 | } | |
4439 | else if (b->pending && (b->enable_state == bp_enabled)) | |
4440 | { | |
4441 | if (resolve_pending_breakpoint (b) == GDB_RC_OK) | |
4442 | delete_breakpoint (b); | |
4443 | } | |
4444 | } | |
c906108c SS |
4445 | } |
4446 | ||
4447 | #endif | |
4448 | ||
4449 | static void | |
fba45db2 KB |
4450 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4451 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4452 | { |
c5aa993b | 4453 | struct breakpoint *b; |
c906108c | 4454 | struct symtabs_and_lines sals; |
c5aa993b JM |
4455 | struct cleanup *old_chain; |
4456 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4457 | char *addr_start = hookname; |
4458 | char *addr_end = NULL; | |
4459 | char **canonical = (char **) NULL; | |
4460 | int thread = -1; /* All threads. */ | |
4461 | ||
1272ad14 MS |
4462 | /* Set a breakpoint on the specified hook. */ |
4463 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, | |
4464 | 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 | { |
1272ad14 | 4538 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
53a5351d | 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 | ||
05ff989b | 5080 | static void |
0101ce28 JJ |
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); | |
0101ce28 JJ |
5087 | } |
5088 | ||
c3f6f71d JM |
5089 | /* Set a breakpoint according to ARG (function, linenum or *address) |
5090 | flag: first bit : 0 non-temporary, 1 temporary. | |
0101ce28 | 5091 | second bit : 0 normal breakpoint, 1 hardware breakpoint. |
c5aa993b | 5092 | |
0101ce28 JJ |
5093 | PENDING_BP is non-NULL when this function is being called to resolve |
5094 | a pending breakpoint. */ | |
5095 | ||
5096 | static int | |
5097 | break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp) | |
c3f6f71d | 5098 | { |
05ff989b | 5099 | struct exception e; |
c3f6f71d JM |
5100 | int tempflag, hardwareflag; |
5101 | struct symtabs_and_lines sals; | |
52f0bd74 | 5102 | struct expression **cond = 0; |
0101ce28 | 5103 | struct symtab_and_line pending_sal; |
c3f6f71d | 5104 | char **cond_string = (char **) NULL; |
0101ce28 JJ |
5105 | char *copy_arg; |
5106 | char *err_msg; | |
c3f6f71d JM |
5107 | char *addr_start = arg; |
5108 | char **addr_string; | |
5109 | struct cleanup *old_chain; | |
5110 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5111 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5112 | int i; |
0101ce28 | 5113 | int pending = 0; |
c3f6f71d JM |
5114 | int thread = -1; |
5115 | int ignore_count = 0; | |
0101ce28 | 5116 | int not_found = 0; |
c3f6f71d JM |
5117 | |
5118 | hardwareflag = flag & BP_HARDWAREFLAG; | |
5119 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 5120 | |
c3f6f71d JM |
5121 | sals.sals = NULL; |
5122 | sals.nelts = 0; | |
5123 | addr_string = NULL; | |
c3f6f71d | 5124 | |
0101ce28 JJ |
5125 | parse_args.arg_p = &arg; |
5126 | parse_args.sals_p = &sals; | |
5127 | parse_args.addr_string_p = &addr_string; | |
5128 | parse_args.not_found_ptr = ¬_found; | |
5129 | ||
05ff989b AC |
5130 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5131 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5132 | |
5133 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5134 | switch (e.reason) |
0101ce28 | 5135 | { |
05ff989b AC |
5136 | case RETURN_QUIT: |
5137 | exception_print (gdb_stderr, NULL, e); | |
5138 | return e.reason; | |
5139 | case RETURN_ERROR: | |
5140 | switch (e.error) | |
0101ce28 | 5141 | { |
05ff989b AC |
5142 | case NOT_FOUND_ERROR: |
5143 | /* If called to resolve pending breakpoint, just return | |
5144 | error code. */ | |
0101ce28 | 5145 | if (pending_bp) |
05ff989b | 5146 | return e.reason; |
0101ce28 | 5147 | |
05ff989b | 5148 | exception_print (gdb_stderr, NULL, e); |
fa8d40ab | 5149 | |
05ff989b AC |
5150 | /* If pending breakpoint support is turned off, throw |
5151 | error. */ | |
fa8d40ab JJ |
5152 | |
5153 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
2a78bfb5 | 5154 | throw_reason (RETURN_ERROR); |
fa8d40ab | 5155 | |
05ff989b AC |
5156 | /* If pending breakpoint support is auto query and the user |
5157 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5158 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5159 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
05ff989b | 5160 | return e.reason; |
fa8d40ab | 5161 | |
05ff989b AC |
5162 | /* At this point, either the user was queried about setting |
5163 | a pending breakpoint and selected yes, or pending | |
5164 | breakpoint behavior is on and thus a pending breakpoint | |
5165 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5166 | copy_arg = xstrdup (addr_start); |
5167 | addr_string = ©_arg; | |
5168 | sals.nelts = 1; | |
5169 | sals.sals = &pending_sal; | |
5170 | pending_sal.pc = 0; | |
5171 | pending = 1; | |
05ff989b AC |
5172 | break; |
5173 | default: | |
5174 | exception_print (gdb_stderr, NULL, e); | |
5175 | return e.reason; | |
0101ce28 | 5176 | } |
05ff989b AC |
5177 | default: |
5178 | if (!sals.nelts) | |
5179 | return GDB_RC_FAIL; | |
0101ce28 | 5180 | } |
c3f6f71d JM |
5181 | |
5182 | /* Create a chain of things that always need to be cleaned up. */ | |
5183 | old_chain = make_cleanup (null_cleanup, 0); | |
5184 | ||
0101ce28 JJ |
5185 | if (!pending) |
5186 | { | |
5187 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5188 | make_cleanup (xfree, sals.sals); | |
5189 | ||
5190 | /* Cleanup the addr_string array but not its contents. */ | |
5191 | make_cleanup (xfree, addr_string); | |
5192 | } | |
c3f6f71d JM |
5193 | |
5194 | /* Allocate space for all the cond expressions. */ | |
5195 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5196 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5197 | |
5198 | /* Allocate space for all the cond strings. */ | |
5199 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5200 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5201 | |
5202 | /* ----------------------------- SNIP ----------------------------- | |
5203 | Anything added to the cleanup chain beyond this point is assumed | |
5204 | to be part of a breakpoint. If the breakpoint create succeeds | |
5205 | then the memory is not reclaimed. */ | |
5206 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5207 | ||
5208 | /* Mark the contents of the addr_string for cleanup. These go on | |
5209 | the breakpoint_chain and only occure if the breakpoint create | |
5210 | fails. */ | |
5211 | for (i = 0; i < sals.nelts; i++) | |
5212 | { | |
5213 | if (addr_string[i] != NULL) | |
b8c9b27d | 5214 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5215 | } |
5216 | ||
5217 | /* Resolve all line numbers to PC's and verify that the addresses | |
5218 | are ok for the target. */ | |
0101ce28 JJ |
5219 | if (!pending) |
5220 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5221 | |
5222 | /* Verify that condition can be parsed, before setting any | |
5223 | breakpoints. Allocate a separate condition expression for each | |
5224 | breakpoint. */ | |
5225 | thread = -1; /* No specific thread yet */ | |
0101ce28 | 5226 | if (!pending) |
c3f6f71d | 5227 | { |
0101ce28 | 5228 | for (i = 0; i < sals.nelts; i++) |
c906108c | 5229 | { |
0101ce28 JJ |
5230 | char *tok = arg; |
5231 | while (tok && *tok) | |
c906108c | 5232 | { |
0101ce28 JJ |
5233 | char *end_tok; |
5234 | int toklen; | |
5235 | char *cond_start = NULL; | |
5236 | char *cond_end = NULL; | |
5237 | while (*tok == ' ' || *tok == '\t') | |
5238 | tok++; | |
5239 | ||
5240 | end_tok = tok; | |
5241 | ||
5242 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5243 | end_tok++; | |
5244 | ||
5245 | toklen = end_tok - tok; | |
5246 | ||
5247 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5248 | { | |
5249 | tok = cond_start = end_tok + 1; | |
5250 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), | |
5251 | 0); | |
5252 | make_cleanup (xfree, cond[i]); | |
5253 | cond_end = tok; | |
5254 | cond_string[i] = savestring (cond_start, | |
5255 | cond_end - cond_start); | |
5256 | make_cleanup (xfree, cond_string[i]); | |
5257 | } | |
5258 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5259 | { | |
5260 | char *tmptok; | |
5261 | ||
5262 | tok = end_tok + 1; | |
5263 | tmptok = tok; | |
5264 | thread = strtol (tok, &tok, 0); | |
5265 | if (tok == tmptok) | |
5266 | error ("Junk after thread keyword."); | |
5267 | if (!valid_thread_id (thread)) | |
5268 | error ("Unknown thread %d\n", thread); | |
5269 | } | |
5270 | else | |
5271 | error ("Junk at end of arguments."); | |
c906108c | 5272 | } |
c906108c | 5273 | } |
0101ce28 JJ |
5274 | create_breakpoints (sals, addr_string, cond, cond_string, |
5275 | hardwareflag ? bp_hardware_breakpoint | |
5276 | : bp_breakpoint, | |
5277 | tempflag ? disp_del : disp_donttouch, | |
5278 | thread, ignore_count, from_tty, | |
5279 | pending_bp); | |
c906108c | 5280 | } |
0101ce28 JJ |
5281 | else |
5282 | { | |
5283 | struct symtab_and_line sal; | |
5284 | struct breakpoint *b; | |
5285 | ||
5286 | sal.symtab = NULL; | |
5287 | sal.pc = 0; | |
5288 | ||
5289 | make_cleanup (xfree, copy_arg); | |
5290 | ||
5291 | b = set_raw_breakpoint (sal, hardwareflag ? bp_hardware_breakpoint | |
5292 | : bp_breakpoint); | |
5293 | set_breakpoint_count (breakpoint_count + 1); | |
5294 | b->number = breakpoint_count; | |
5295 | b->cond = *cond; | |
5296 | b->thread = thread; | |
5297 | b->addr_string = *addr_string; | |
5298 | b->cond_string = *cond_string; | |
5299 | b->ignore_count = ignore_count; | |
5300 | b->pending = 1; | |
5301 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
5302 | b->from_tty = from_tty; | |
5303 | b->flag = flag; | |
5304 | mention (b); | |
5305 | } | |
5306 | ||
c3f6f71d JM |
5307 | if (sals.nelts > 1) |
5308 | { | |
5309 | warning ("Multiple breakpoints were set."); | |
5310 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5311 | } |
c3f6f71d JM |
5312 | /* That's it. Discard the cleanups for data inserted into the |
5313 | breakpoint. */ | |
5314 | discard_cleanups (breakpoint_chain); | |
5315 | /* But cleanup everything else. */ | |
5316 | do_cleanups (old_chain); | |
0101ce28 JJ |
5317 | |
5318 | return GDB_RC_OK; | |
c3f6f71d | 5319 | } |
c906108c | 5320 | |
c3f6f71d JM |
5321 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5322 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5323 | |
c3f6f71d JM |
5324 | struct captured_breakpoint_args |
5325 | { | |
5326 | char *address; | |
5327 | char *condition; | |
5328 | int hardwareflag; | |
5329 | int tempflag; | |
5330 | int thread; | |
5331 | int ignore_count; | |
5332 | }; | |
5333 | ||
5334 | static int | |
ce43223b | 5335 | do_captured_breakpoint (struct ui_out *uiout, void *data) |
c3f6f71d JM |
5336 | { |
5337 | struct captured_breakpoint_args *args = data; | |
5338 | struct symtabs_and_lines sals; | |
52f0bd74 | 5339 | struct expression **cond; |
c3f6f71d JM |
5340 | struct cleanup *old_chain; |
5341 | struct cleanup *breakpoint_chain = NULL; | |
5342 | int i; | |
5343 | char **addr_string; | |
5344 | char **cond_string; | |
5345 | ||
5346 | char *address_end; | |
5347 | ||
5348 | /* Parse the source and lines spec. Delay check that the expression | |
5349 | didn't contain trailing garbage until after cleanups are in | |
5350 | place. */ | |
5351 | sals.sals = NULL; | |
5352 | sals.nelts = 0; | |
5353 | address_end = args->address; | |
5354 | addr_string = NULL; | |
0101ce28 | 5355 | parse_breakpoint_sals (&address_end, &sals, &addr_string, 0); |
c3f6f71d JM |
5356 | |
5357 | if (!sals.nelts) | |
5358 | return GDB_RC_NONE; | |
5359 | ||
5360 | /* Create a chain of things at always need to be cleaned up. */ | |
5361 | old_chain = make_cleanup (null_cleanup, 0); | |
5362 | ||
5363 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5364 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5365 | |
5366 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5367 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5368 | |
5369 | /* Allocate space for all the cond expressions. */ | |
5370 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5371 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5372 | |
5373 | /* Allocate space for all the cond strings. */ | |
5374 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5375 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5376 | |
5377 | /* ----------------------------- SNIP ----------------------------- | |
5378 | Anything added to the cleanup chain beyond this point is assumed | |
5379 | to be part of a breakpoint. If the breakpoint create goes | |
5380 | through then that memory is not cleaned up. */ | |
5381 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5382 | ||
5383 | /* Mark the contents of the addr_string for cleanup. These go on | |
5384 | the breakpoint_chain and only occure if the breakpoint create | |
5385 | fails. */ | |
c906108c SS |
5386 | for (i = 0; i < sals.nelts; i++) |
5387 | { | |
c3f6f71d | 5388 | if (addr_string[i] != NULL) |
b8c9b27d | 5389 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5390 | } |
5391 | ||
c3f6f71d JM |
5392 | /* Wait until now before checking for garbage at the end of the |
5393 | address. That way cleanups can take care of freeing any | |
5394 | memory. */ | |
5395 | if (*address_end != '\0') | |
5396 | error ("Garbage %s following breakpoint address", address_end); | |
5397 | ||
5398 | /* Resolve all line numbers to PC's. */ | |
5399 | breakpoint_sals_to_pc (&sals, args->address); | |
5400 | ||
5401 | /* Verify that conditions can be parsed, before setting any | |
5402 | breakpoints. */ | |
5403 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5404 | { |
c3f6f71d JM |
5405 | if (args->condition != NULL) |
5406 | { | |
5407 | char *tok = args->condition; | |
5408 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5409 | if (*tok != '\0') | |
5410 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 5411 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5412 | cond_string[i] = xstrdup (args->condition); |
5413 | } | |
c906108c | 5414 | } |
c3f6f71d JM |
5415 | |
5416 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5417 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5418 | args->tempflag ? disp_del : disp_donttouch, |
0101ce28 JJ |
5419 | args->thread, args->ignore_count, 0/*from-tty*/, |
5420 | NULL/*pending_bp*/); | |
c3f6f71d JM |
5421 | |
5422 | /* That's it. Discard the cleanups for data inserted into the | |
5423 | breakpoint. */ | |
5424 | discard_cleanups (breakpoint_chain); | |
5425 | /* But cleanup everything else. */ | |
c906108c | 5426 | do_cleanups (old_chain); |
c3f6f71d | 5427 | return GDB_RC_OK; |
c906108c SS |
5428 | } |
5429 | ||
c3f6f71d JM |
5430 | enum gdb_rc |
5431 | gdb_breakpoint (char *address, char *condition, | |
5432 | int hardwareflag, int tempflag, | |
ce43223b AC |
5433 | int thread, int ignore_count, |
5434 | char **error_message) | |
c3f6f71d JM |
5435 | { |
5436 | struct captured_breakpoint_args args; | |
5437 | args.address = address; | |
5438 | args.condition = condition; | |
5439 | args.hardwareflag = hardwareflag; | |
5440 | args.tempflag = tempflag; | |
5441 | args.thread = thread; | |
5442 | args.ignore_count = ignore_count; | |
ce43223b AC |
5443 | return catch_exceptions_with_msg (uiout, do_captured_breakpoint, &args, |
5444 | NULL, error_message, RETURN_MASK_ALL); | |
c3f6f71d JM |
5445 | } |
5446 | ||
5447 | ||
c906108c SS |
5448 | /* Helper function for break_command_1 and disassemble_command. */ |
5449 | ||
5450 | void | |
fba45db2 | 5451 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5452 | { |
5453 | CORE_ADDR pc; | |
5454 | ||
5455 | if (sal->pc == 0 && sal->symtab != NULL) | |
5456 | { | |
5457 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5458 | error ("No line %d in file \"%s\".", | |
5459 | sal->line, sal->symtab->filename); | |
5460 | sal->pc = pc; | |
5461 | } | |
5462 | ||
5463 | if (sal->section == 0 && sal->symtab != NULL) | |
5464 | { | |
5465 | struct blockvector *bv; | |
c5aa993b JM |
5466 | struct block *b; |
5467 | struct symbol *sym; | |
5468 | int index; | |
c906108c | 5469 | |
c5aa993b | 5470 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5471 | if (bv != NULL) |
5472 | { | |
c5aa993b | 5473 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5474 | sym = block_function (b); |
5475 | if (sym != NULL) | |
5476 | { | |
5477 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5478 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5479 | } | |
5480 | else | |
5481 | { | |
5482 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5483 | have to look harder. This case can be executed if we have |
5484 | line numbers but no functions (as can happen in assembly | |
5485 | source). */ | |
c906108c | 5486 | |
c5aa993b | 5487 | struct minimal_symbol *msym; |
c906108c SS |
5488 | |
5489 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5490 | if (msym) | |
5491 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5492 | } | |
5493 | } | |
5494 | } | |
5495 | } | |
5496 | ||
5497 | void | |
fba45db2 | 5498 | break_command (char *arg, int from_tty) |
c906108c | 5499 | { |
0101ce28 | 5500 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5501 | } |
5502 | ||
c906108c | 5503 | void |
fba45db2 | 5504 | tbreak_command (char *arg, int from_tty) |
c906108c | 5505 | { |
0101ce28 | 5506 | break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL); |
c906108c SS |
5507 | } |
5508 | ||
c906108c | 5509 | static void |
fba45db2 | 5510 | hbreak_command (char *arg, int from_tty) |
c906108c | 5511 | { |
0101ce28 | 5512 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty, NULL); |
c906108c SS |
5513 | } |
5514 | ||
5515 | static void | |
fba45db2 | 5516 | thbreak_command (char *arg, int from_tty) |
c906108c | 5517 | { |
0101ce28 | 5518 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty, NULL); |
c906108c SS |
5519 | } |
5520 | ||
5521 | static void | |
fba45db2 | 5522 | stop_command (char *arg, int from_tty) |
c906108c SS |
5523 | { |
5524 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5525 | Usage: stop in <function | address>\n\ | |
5526 | stop at <line>\n"); | |
5527 | } | |
5528 | ||
5529 | static void | |
fba45db2 | 5530 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5531 | { |
5532 | int badInput = 0; | |
5533 | ||
c5aa993b | 5534 | if (arg == (char *) NULL) |
c906108c SS |
5535 | badInput = 1; |
5536 | else if (*arg != '*') | |
5537 | { | |
5538 | char *argptr = arg; | |
5539 | int hasColon = 0; | |
5540 | ||
53a5351d JM |
5541 | /* look for a ':'. If this is a line number specification, then |
5542 | say it is bad, otherwise, it should be an address or | |
5543 | function/method name */ | |
c906108c | 5544 | while (*argptr && !hasColon) |
c5aa993b JM |
5545 | { |
5546 | hasColon = (*argptr == ':'); | |
5547 | argptr++; | |
5548 | } | |
c906108c SS |
5549 | |
5550 | if (hasColon) | |
c5aa993b | 5551 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5552 | else |
c5aa993b | 5553 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5554 | } |
5555 | ||
5556 | if (badInput) | |
c5aa993b | 5557 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c | 5558 | else |
0101ce28 | 5559 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5560 | } |
5561 | ||
5562 | static void | |
fba45db2 | 5563 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5564 | { |
5565 | int badInput = 0; | |
5566 | ||
c5aa993b | 5567 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5568 | badInput = 1; |
5569 | else | |
5570 | { | |
5571 | char *argptr = arg; | |
5572 | int hasColon = 0; | |
5573 | ||
5574 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5575 | it is probably a line number. */ |
c906108c | 5576 | while (*argptr && !hasColon) |
c5aa993b JM |
5577 | { |
5578 | hasColon = (*argptr == ':'); | |
5579 | argptr++; | |
5580 | } | |
c906108c SS |
5581 | |
5582 | if (hasColon) | |
c5aa993b | 5583 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5584 | else |
c5aa993b | 5585 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5586 | } |
5587 | ||
5588 | if (badInput) | |
c5aa993b | 5589 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c | 5590 | else |
0101ce28 | 5591 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5592 | } |
5593 | ||
53a5351d JM |
5594 | /* accessflag: hw_write: watch write, |
5595 | hw_read: watch read, | |
5596 | hw_access: watch access (read or write) */ | |
c906108c | 5597 | static void |
fba45db2 | 5598 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5599 | { |
5600 | struct breakpoint *b; | |
5601 | struct symtab_and_line sal; | |
5602 | struct expression *exp; | |
5603 | struct block *exp_valid_block; | |
5604 | struct value *val, *mark; | |
5605 | struct frame_info *frame; | |
5606 | struct frame_info *prev_frame = NULL; | |
5607 | char *exp_start = NULL; | |
5608 | char *exp_end = NULL; | |
5609 | char *tok, *end_tok; | |
5610 | int toklen; | |
5611 | char *cond_start = NULL; | |
5612 | char *cond_end = NULL; | |
5613 | struct expression *cond = NULL; | |
5614 | int i, other_type_used, target_resources_ok = 0; | |
5615 | enum bptype bp_type; | |
5616 | int mem_cnt = 0; | |
5617 | ||
fe39c653 | 5618 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5619 | |
c906108c SS |
5620 | /* Parse arguments. */ |
5621 | innermost_block = NULL; | |
5622 | exp_start = arg; | |
5623 | exp = parse_exp_1 (&arg, 0, 0); | |
5624 | exp_end = arg; | |
5625 | exp_valid_block = innermost_block; | |
5626 | mark = value_mark (); | |
5627 | val = evaluate_expression (exp); | |
5628 | release_value (val); | |
5629 | if (VALUE_LAZY (val)) | |
5630 | value_fetch_lazy (val); | |
5631 | ||
5632 | tok = arg; | |
5633 | while (*tok == ' ' || *tok == '\t') | |
5634 | tok++; | |
5635 | end_tok = tok; | |
5636 | ||
5637 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5638 | end_tok++; | |
5639 | ||
5640 | toklen = end_tok - tok; | |
5641 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5642 | { | |
5643 | tok = cond_start = end_tok + 1; | |
5644 | cond = parse_exp_1 (&tok, 0, 0); | |
5645 | cond_end = tok; | |
5646 | } | |
5647 | if (*tok) | |
c5aa993b | 5648 | error ("Junk at end of command."); |
c906108c | 5649 | |
53a5351d | 5650 | if (accessflag == hw_read) |
c5aa993b | 5651 | bp_type = bp_read_watchpoint; |
53a5351d | 5652 | else if (accessflag == hw_access) |
c5aa993b JM |
5653 | bp_type = bp_access_watchpoint; |
5654 | else | |
5655 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5656 | |
5657 | mem_cnt = can_use_hardware_watchpoint (val); | |
5658 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5659 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5660 | if (mem_cnt != 0) |
5661 | { | |
5662 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5663 | target_resources_ok = |
5664 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5665 | other_type_used); | |
c5aa993b | 5666 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5667 | error ("Target does not support this type of hardware watchpoint."); |
5668 | ||
c5aa993b | 5669 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5670 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5671 | } |
c906108c SS |
5672 | |
5673 | #if defined(HPUXHPPA) | |
c5aa993b | 5674 | /* On HP-UX if you set a h/w |
c906108c SS |
5675 | watchpoint before the "run" command, the inferior dies with a e.g., |
5676 | SIGILL once you start it. I initially believed this was due to a | |
5677 | bad interaction between page protection traps and the initial | |
5678 | startup sequence by the dynamic linker. | |
5679 | ||
5680 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5681 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5682 | yet, which forced slow watches before a "run" or "attach", and it |
5683 | still fails somewhere in the startup code. | |
5684 | ||
5685 | Until I figure out what's happening, I'm disallowing watches altogether | |
5686 | before the "run" or "attach" command. We'll tell the user they must | |
5687 | set watches after getting the program started. */ | |
c5aa993b | 5688 | if (!target_has_execution) |
c906108c SS |
5689 | { |
5690 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5691 | return; | |
5692 | } | |
5693 | #endif /* HPUXHPPA */ | |
c5aa993b | 5694 | |
4d28f7a8 KB |
5695 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5696 | watchpoint could not be set. */ | |
5697 | if (!mem_cnt || target_resources_ok <= 0) | |
5698 | bp_type = bp_watchpoint; | |
5699 | ||
c906108c | 5700 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5701 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5702 | set_breakpoint_count (breakpoint_count + 1); |
5703 | b->number = breakpoint_count; | |
b5de0fa7 | 5704 | b->disposition = disp_donttouch; |
c906108c SS |
5705 | b->exp = exp; |
5706 | b->exp_valid_block = exp_valid_block; | |
5707 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5708 | b->val = val; | |
5709 | b->cond = cond; | |
5710 | if (cond_start) | |
5711 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5712 | else | |
5713 | b->cond_string = 0; | |
c5aa993b | 5714 | |
c906108c SS |
5715 | frame = block_innermost_frame (exp_valid_block); |
5716 | if (frame) | |
5717 | { | |
5718 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5719 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5720 | } |
5721 | else | |
101dcfbe AC |
5722 | { |
5723 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5724 | } | |
c906108c | 5725 | |
c906108c SS |
5726 | /* If the expression is "local", then set up a "watchpoint scope" |
5727 | breakpoint at the point where we've left the scope of the watchpoint | |
5728 | expression. */ | |
5729 | if (innermost_block) | |
5730 | { | |
5731 | if (prev_frame) | |
5732 | { | |
5733 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5734 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5735 | bp_watchpoint_scope); | |
c906108c | 5736 | |
b5de0fa7 | 5737 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5738 | |
5739 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5740 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5741 | |
5742 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5743 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5744 | |
5745 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5746 | scope_breakpoint->loc->requested_address |
5747 | = get_frame_pc (prev_frame); | |
5748 | scope_breakpoint->loc->address | |
88f7da05 KB |
5749 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, |
5750 | scope_breakpoint->type); | |
c906108c SS |
5751 | |
5752 | /* The scope breakpoint is related to the watchpoint. We | |
5753 | will need to act on them together. */ | |
5754 | b->related_breakpoint = scope_breakpoint; | |
5755 | } | |
5756 | } | |
5757 | value_free_to_mark (mark); | |
5758 | mention (b); | |
5759 | } | |
5760 | ||
5761 | /* Return count of locations need to be watched and can be handled | |
5762 | in hardware. If the watchpoint can not be handled | |
5763 | in hardware return zero. */ | |
5764 | ||
53a5351d JM |
5765 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) |
5766 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5767 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5768 | #endif |
5769 | ||
5770 | static int | |
fba45db2 | 5771 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5772 | { |
5773 | int found_memory_cnt = 0; | |
2e70b7b9 | 5774 | struct value *head = v; |
c906108c SS |
5775 | |
5776 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5777 | if (!can_use_hw_watchpoints) |
c906108c | 5778 | return 0; |
c5aa993b | 5779 | |
5c44784c JM |
5780 | /* Make sure that the value of the expression depends only upon |
5781 | memory contents, and values computed from them within GDB. If we | |
5782 | find any register references or function calls, we can't use a | |
5783 | hardware watchpoint. | |
5784 | ||
5785 | The idea here is that evaluating an expression generates a series | |
5786 | of values, one holding the value of every subexpression. (The | |
5787 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5788 | a*b+c.) GDB's values hold almost enough information to establish | |
5789 | the criteria given above --- they identify memory lvalues, | |
5790 | register lvalues, computed values, etcetera. So we can evaluate | |
5791 | the expression, and then scan the chain of values that leaves | |
5792 | behind to decide whether we can detect any possible change to the | |
5793 | expression's final value using only hardware watchpoints. | |
5794 | ||
5795 | However, I don't think that the values returned by inferior | |
5796 | function calls are special in any way. So this function may not | |
5797 | notice that an expression involving an inferior function call | |
5798 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5799 | for (; v; v = v->next) |
c906108c | 5800 | { |
5c44784c | 5801 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5802 | { |
5c44784c JM |
5803 | if (VALUE_LAZY (v)) |
5804 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5805 | we either just used its address (e.g., `a' in `a.b') or | |
5806 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5807 | ; | |
53a5351d | 5808 | else |
5c44784c JM |
5809 | { |
5810 | /* Ahh, memory we actually used! Check if we can cover | |
5811 | it with hardware watchpoints. */ | |
df407dfe | 5812 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
5813 | |
5814 | /* We only watch structs and arrays if user asked for it | |
5815 | explicitly, never if they just happen to appear in a | |
5816 | middle of some value chain. */ | |
5817 | if (v == head | |
5818 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5819 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5820 | { | |
df407dfe AC |
5821 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
5822 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
5823 | |
5824 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5825 | return 0; | |
5826 | else | |
5827 | found_memory_cnt++; | |
5828 | } | |
5c44784c | 5829 | } |
c5aa993b | 5830 | } |
c906108c | 5831 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5832 | return 0; /* ??? What does this represent? */ |
5833 | else if (v->lval == lval_register) | |
5834 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5835 | } |
5836 | ||
5837 | /* The expression itself looks suitable for using a hardware | |
5838 | watchpoint, but give the target machine a chance to reject it. */ | |
5839 | return found_memory_cnt; | |
5840 | } | |
5841 | ||
8b93c638 | 5842 | void |
fba45db2 | 5843 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5844 | { |
5845 | watch_command (arg, from_tty); | |
5846 | } | |
8926118c | 5847 | |
c5aa993b | 5848 | static void |
fba45db2 | 5849 | watch_command (char *arg, int from_tty) |
c906108c | 5850 | { |
53a5351d | 5851 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5852 | } |
5853 | ||
8b93c638 | 5854 | void |
fba45db2 | 5855 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5856 | { |
5857 | rwatch_command (arg, from_tty); | |
5858 | } | |
8926118c | 5859 | |
c5aa993b | 5860 | static void |
fba45db2 | 5861 | rwatch_command (char *arg, int from_tty) |
c906108c | 5862 | { |
53a5351d | 5863 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5864 | } |
5865 | ||
8b93c638 | 5866 | void |
fba45db2 | 5867 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5868 | { |
5869 | awatch_command (arg, from_tty); | |
5870 | } | |
8926118c | 5871 | |
c5aa993b | 5872 | static void |
fba45db2 | 5873 | awatch_command (char *arg, int from_tty) |
c906108c | 5874 | { |
53a5351d | 5875 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5876 | } |
c906108c | 5877 | \f |
c5aa993b | 5878 | |
43ff13b4 | 5879 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5880 | because it uses the mechanisms of breakpoints. */ |
5881 | ||
43ff13b4 JM |
5882 | /* This function is called by fetch_inferior_event via the |
5883 | cmd_continuation pointer, to complete the until command. It takes | |
5884 | care of cleaning up the temporary breakpoints set up by the until | |
5885 | command. */ | |
c2c6d25f JM |
5886 | static void |
5887 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5888 | { |
0d06e24b JM |
5889 | struct cleanup *cleanups; |
5890 | ||
57e687d9 | 5891 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5892 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5893 | } |
5894 | ||
c906108c | 5895 | void |
ae66c1fc | 5896 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
5897 | { |
5898 | struct symtabs_and_lines sals; | |
5899 | struct symtab_and_line sal; | |
6e7f8b9c | 5900 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
5901 | struct breakpoint *breakpoint; |
5902 | struct cleanup *old_chain; | |
0d06e24b JM |
5903 | struct continuation_arg *arg1; |
5904 | ||
c906108c SS |
5905 | |
5906 | clear_proceed_status (); | |
5907 | ||
5908 | /* Set a breakpoint where the user wants it and at return from | |
5909 | this function */ | |
c5aa993b | 5910 | |
c906108c SS |
5911 | if (default_breakpoint_valid) |
5912 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 5913 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 5914 | else |
53a5351d | 5915 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 5916 | 0, (char ***) NULL, NULL); |
c5aa993b | 5917 | |
c906108c SS |
5918 | if (sals.nelts != 1) |
5919 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5920 | |
c906108c | 5921 | sal = sals.sals[0]; |
b8c9b27d | 5922 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 5923 | |
c906108c SS |
5924 | if (*arg) |
5925 | error ("Junk at end of arguments."); | |
c5aa993b | 5926 | |
c906108c | 5927 | resolve_sal_pc (&sal); |
c5aa993b | 5928 | |
ae66c1fc EZ |
5929 | if (anywhere) |
5930 | /* If the user told us to continue until a specified location, | |
5931 | we don't specify a frame at which we need to stop. */ | |
5932 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
5933 | else | |
5934 | /* Otherwise, specify the current frame, because we want to stop only | |
5935 | at the very same frame. */ | |
5936 | breakpoint = set_momentary_breakpoint (sal, | |
5937 | get_frame_id (deprecated_selected_frame), | |
5938 | bp_until); | |
c5aa993b | 5939 | |
362646f5 | 5940 | if (!target_can_async_p ()) |
4d6140d9 | 5941 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5942 | else |
4d6140d9 | 5943 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5944 | |
5945 | /* If we are running asynchronously, and the target supports async | |
5946 | execution, we are not waiting for the target to stop, in the call | |
5947 | tp proceed, below. This means that we cannot delete the | |
5948 | brekpoints until the target has actually stopped. The only place | |
5949 | where we get a chance to do that is in fetch_inferior_event, so | |
5950 | we must set things up for that. */ | |
5951 | ||
362646f5 | 5952 | if (target_can_async_p ()) |
43ff13b4 | 5953 | { |
0d06e24b JM |
5954 | /* In this case the arg for the continuation is just the point |
5955 | in the exec_cleanups chain from where to start doing | |
5956 | cleanups, because all the continuation does is the cleanups in | |
5957 | the exec_cleanup_chain. */ | |
5958 | arg1 = | |
5959 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5960 | arg1->next = NULL; |
5961 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5962 | |
5963 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5964 | } |
c906108c | 5965 | |
ae66c1fc EZ |
5966 | /* Keep within the current frame, or in frames called by the current |
5967 | one. */ | |
c906108c SS |
5968 | if (prev_frame) |
5969 | { | |
30f7db39 AC |
5970 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
5971 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
5972 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
5973 | bp_until); | |
362646f5 | 5974 | if (!target_can_async_p ()) |
4d6140d9 | 5975 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5976 | else |
4d6140d9 | 5977 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5978 | } |
c5aa993b | 5979 | |
c906108c | 5980 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5981 | /* Do the cleanups now, anly if we are not running asynchronously, |
5982 | of if we are, but the target is still synchronous. */ | |
362646f5 | 5983 | if (!target_can_async_p ()) |
c5aa993b | 5984 | do_cleanups (old_chain); |
c906108c | 5985 | } |
ae66c1fc | 5986 | |
c906108c | 5987 | static void |
fba45db2 | 5988 | ep_skip_leading_whitespace (char **s) |
c906108c | 5989 | { |
c5aa993b JM |
5990 | if ((s == NULL) || (*s == NULL)) |
5991 | return; | |
5992 | while (isspace (**s)) | |
5993 | *s += 1; | |
c906108c | 5994 | } |
c5aa993b | 5995 | |
c906108c SS |
5996 | /* This function examines a string, and attempts to find a token |
5997 | that might be an event name in the leading characters. If a | |
5998 | possible match is found, a pointer to the last character of | |
5999 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6000 | |
c906108c | 6001 | static char * |
fba45db2 | 6002 | ep_find_event_name_end (char *arg) |
c906108c | 6003 | { |
c5aa993b JM |
6004 | char *s = arg; |
6005 | char *event_name_end = NULL; | |
6006 | ||
c906108c SS |
6007 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6008 | if (arg == NULL) | |
6009 | return NULL; | |
c5aa993b | 6010 | |
c906108c | 6011 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6012 | Basically, we're looking for alphanumerics and underscores; |
6013 | anything else delimites the token. */ | |
c906108c SS |
6014 | while (*s != '\0') |
6015 | { | |
c5aa993b JM |
6016 | if (!isalnum (*s) && (*s != '_')) |
6017 | break; | |
c906108c SS |
6018 | event_name_end = s; |
6019 | s++; | |
6020 | } | |
c5aa993b | 6021 | |
c906108c SS |
6022 | return event_name_end; |
6023 | } | |
6024 | ||
c5aa993b | 6025 | |
c906108c SS |
6026 | /* This function attempts to parse an optional "if <cond>" clause |
6027 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6028 | |
c906108c SS |
6029 | Else, it returns a pointer to the condition string. (It does not |
6030 | attempt to evaluate the string against a particular block.) And, | |
6031 | it updates arg to point to the first character following the parsed | |
6032 | if clause in the arg string. */ | |
53a5351d | 6033 | |
c906108c | 6034 | static char * |
fba45db2 | 6035 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6036 | { |
c5aa993b JM |
6037 | char *cond_string; |
6038 | ||
6039 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6040 | return NULL; |
c5aa993b | 6041 | |
c906108c SS |
6042 | /* Skip the "if" keyword. */ |
6043 | (*arg) += 2; | |
c5aa993b | 6044 | |
c906108c SS |
6045 | /* Skip any extra leading whitespace, and record the start of the |
6046 | condition string. */ | |
6047 | ep_skip_leading_whitespace (arg); | |
6048 | cond_string = *arg; | |
c5aa993b | 6049 | |
c906108c SS |
6050 | /* Assume that the condition occupies the remainder of the arg string. */ |
6051 | (*arg) += strlen (cond_string); | |
c5aa993b | 6052 | |
c906108c SS |
6053 | return cond_string; |
6054 | } | |
c5aa993b | 6055 | |
c906108c SS |
6056 | /* This function attempts to parse an optional filename from the arg |
6057 | string. If one is not found, it returns NULL. | |
c5aa993b | 6058 | |
c906108c SS |
6059 | Else, it returns a pointer to the parsed filename. (This function |
6060 | makes no attempt to verify that a file of that name exists, or is | |
6061 | accessible.) And, it updates arg to point to the first character | |
6062 | following the parsed filename in the arg string. | |
c5aa993b | 6063 | |
c906108c SS |
6064 | Note that clients needing to preserve the returned filename for |
6065 | future access should copy it to their own buffers. */ | |
6066 | static char * | |
fba45db2 | 6067 | ep_parse_optional_filename (char **arg) |
c906108c | 6068 | { |
c5aa993b JM |
6069 | static char filename[1024]; |
6070 | char *arg_p = *arg; | |
6071 | int i; | |
6072 | char c; | |
6073 | ||
c906108c SS |
6074 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6075 | return NULL; | |
c5aa993b JM |
6076 | |
6077 | for (i = 0;; i++) | |
c906108c SS |
6078 | { |
6079 | c = *arg_p; | |
6080 | if (isspace (c)) | |
c5aa993b | 6081 | c = '\0'; |
c906108c SS |
6082 | filename[i] = c; |
6083 | if (c == '\0') | |
c5aa993b | 6084 | break; |
c906108c SS |
6085 | arg_p++; |
6086 | } | |
6087 | *arg = arg_p; | |
c5aa993b | 6088 | |
c906108c SS |
6089 | return filename; |
6090 | } | |
c5aa993b | 6091 | |
c906108c SS |
6092 | /* Commands to deal with catching events, such as signals, exceptions, |
6093 | process start/exit, etc. */ | |
c5aa993b JM |
6094 | |
6095 | typedef enum | |
6096 | { | |
6097 | catch_fork, catch_vfork | |
6098 | } | |
6099 | catch_fork_kind; | |
6100 | ||
c906108c | 6101 | static void |
fba45db2 KB |
6102 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6103 | int from_tty) | |
c906108c | 6104 | { |
c5aa993b JM |
6105 | char *cond_string = NULL; |
6106 | ||
c906108c | 6107 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6108 | |
c906108c | 6109 | /* The allowed syntax is: |
c5aa993b JM |
6110 | catch [v]fork |
6111 | catch [v]fork if <cond> | |
6112 | ||
c906108c SS |
6113 | First, check if there's an if clause. */ |
6114 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6115 | |
c906108c SS |
6116 | if ((*arg != '\0') && !isspace (*arg)) |
6117 | error ("Junk at end of arguments."); | |
c5aa993b | 6118 | |
c906108c SS |
6119 | /* If this target supports it, create a fork or vfork catchpoint |
6120 | and enable reporting of such events. */ | |
c5aa993b JM |
6121 | switch (fork_kind) |
6122 | { | |
6123 | case catch_fork: | |
c906108c SS |
6124 | create_fork_event_catchpoint (tempflag, cond_string); |
6125 | break; | |
c5aa993b | 6126 | case catch_vfork: |
c906108c SS |
6127 | create_vfork_event_catchpoint (tempflag, cond_string); |
6128 | break; | |
c5aa993b | 6129 | default: |
c906108c SS |
6130 | error ("unsupported or unknown fork kind; cannot catch it"); |
6131 | break; | |
c5aa993b | 6132 | } |
c906108c SS |
6133 | } |
6134 | ||
6135 | static void | |
fba45db2 | 6136 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6137 | { |
c5aa993b | 6138 | char *cond_string = NULL; |
c906108c SS |
6139 | |
6140 | ep_skip_leading_whitespace (&arg); | |
6141 | ||
6142 | /* The allowed syntax is: | |
c5aa993b JM |
6143 | catch exec |
6144 | catch exec if <cond> | |
c906108c SS |
6145 | |
6146 | First, check if there's an if clause. */ | |
6147 | cond_string = ep_parse_optional_if_clause (&arg); | |
6148 | ||
6149 | if ((*arg != '\0') && !isspace (*arg)) | |
6150 | error ("Junk at end of arguments."); | |
6151 | ||
6152 | /* If this target supports it, create an exec catchpoint | |
6153 | and enable reporting of such events. */ | |
6154 | create_exec_event_catchpoint (tempflag, cond_string); | |
6155 | } | |
c5aa993b | 6156 | |
c906108c | 6157 | static void |
fba45db2 | 6158 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6159 | { |
c5aa993b JM |
6160 | char *dll_pathname = NULL; |
6161 | char *cond_string = NULL; | |
6162 | ||
c906108c | 6163 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6164 | |
c906108c | 6165 | /* The allowed syntax is: |
c5aa993b JM |
6166 | catch load |
6167 | catch load if <cond> | |
6168 | catch load <filename> | |
6169 | catch load <filename> if <cond> | |
6170 | ||
c906108c SS |
6171 | The user is not allowed to specify the <filename> after an |
6172 | if clause. | |
c5aa993b | 6173 | |
c906108c | 6174 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6175 | |
c906108c SS |
6176 | First, check if there's an if clause. If so, then there |
6177 | cannot be a filename. */ | |
6178 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6179 | |
c906108c SS |
6180 | /* If there was an if clause, then there cannot be a filename. |
6181 | Else, there might be a filename and an if clause. */ | |
6182 | if (cond_string == NULL) | |
6183 | { | |
6184 | dll_pathname = ep_parse_optional_filename (&arg); | |
6185 | ep_skip_leading_whitespace (&arg); | |
6186 | cond_string = ep_parse_optional_if_clause (&arg); | |
6187 | } | |
c5aa993b | 6188 | |
c906108c SS |
6189 | if ((*arg != '\0') && !isspace (*arg)) |
6190 | error ("Junk at end of arguments."); | |
c5aa993b | 6191 | |
c906108c SS |
6192 | /* Create a load breakpoint that only triggers when a load of |
6193 | the specified dll (or any dll, if no pathname was specified) | |
6194 | occurs. */ | |
39f77062 | 6195 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6196 | dll_pathname, cond_string); |
c906108c | 6197 | } |
c5aa993b | 6198 | |
c906108c | 6199 | static void |
fba45db2 | 6200 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6201 | { |
c5aa993b JM |
6202 | char *dll_pathname = NULL; |
6203 | char *cond_string = NULL; | |
6204 | ||
c906108c | 6205 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6206 | |
c906108c | 6207 | /* The allowed syntax is: |
c5aa993b JM |
6208 | catch unload |
6209 | catch unload if <cond> | |
6210 | catch unload <filename> | |
6211 | catch unload <filename> if <cond> | |
6212 | ||
c906108c SS |
6213 | The user is not allowed to specify the <filename> after an |
6214 | if clause. | |
c5aa993b | 6215 | |
c906108c | 6216 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6217 | |
c906108c SS |
6218 | First, check if there's an if clause. If so, then there |
6219 | cannot be a filename. */ | |
6220 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6221 | |
c906108c SS |
6222 | /* If there was an if clause, then there cannot be a filename. |
6223 | Else, there might be a filename and an if clause. */ | |
6224 | if (cond_string == NULL) | |
6225 | { | |
6226 | dll_pathname = ep_parse_optional_filename (&arg); | |
6227 | ep_skip_leading_whitespace (&arg); | |
6228 | cond_string = ep_parse_optional_if_clause (&arg); | |
6229 | } | |
c5aa993b | 6230 | |
c906108c SS |
6231 | if ((*arg != '\0') && !isspace (*arg)) |
6232 | error ("Junk at end of arguments."); | |
c5aa993b | 6233 | |
c906108c SS |
6234 | /* Create an unload breakpoint that only triggers when an unload of |
6235 | the specified dll (or any dll, if no pathname was specified) | |
6236 | occurs. */ | |
39f77062 | 6237 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6238 | dll_pathname, cond_string); |
c906108c | 6239 | } |
c906108c SS |
6240 | |
6241 | /* Commands to deal with catching exceptions. */ | |
6242 | ||
6243 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6244 | exception event callback */ |
c906108c SS |
6245 | |
6246 | static void | |
fba45db2 KB |
6247 | create_exception_catchpoint (int tempflag, char *cond_string, |
6248 | enum exception_event_kind ex_event, | |
6249 | struct symtab_and_line *sal) | |
c906108c | 6250 | { |
c5aa993b | 6251 | struct breakpoint *b; |
c5aa993b | 6252 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6253 | enum bptype bptype; |
c906108c | 6254 | |
c5aa993b | 6255 | if (!sal) /* no exception support? */ |
c906108c SS |
6256 | return; |
6257 | ||
c906108c SS |
6258 | switch (ex_event) |
6259 | { | |
c5aa993b | 6260 | case EX_EVENT_THROW: |
4d28f7a8 | 6261 | bptype = bp_catch_throw; |
c5aa993b JM |
6262 | break; |
6263 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6264 | bptype = bp_catch_catch; |
c5aa993b JM |
6265 | break; |
6266 | default: /* error condition */ | |
c5aa993b | 6267 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6268 | } |
4d28f7a8 KB |
6269 | |
6270 | b = set_raw_breakpoint (*sal, bptype); | |
6271 | set_breakpoint_count (breakpoint_count + 1); | |
6272 | b->number = breakpoint_count; | |
6273 | b->cond = NULL; | |
6274 | b->cond_string = (cond_string == NULL) ? | |
6275 | NULL : savestring (cond_string, strlen (cond_string)); | |
6276 | b->thread = thread; | |
6277 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6278 | b->enable_state = bp_enabled; |
6279 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6280 | mention (b); |
6281 | } | |
6282 | ||
3086aeae DJ |
6283 | static enum print_stop_action |
6284 | print_exception_catchpoint (struct breakpoint *b) | |
6285 | { | |
6286 | annotate_catchpoint (b->number); | |
6287 | ||
6288 | if (strstr (b->addr_string, "throw") != NULL) | |
6289 | printf_filtered ("\nCatchpoint %d (exception thrown)\n", | |
6290 | b->number); | |
6291 | else | |
6292 | printf_filtered ("\nCatchpoint %d (exception caught)\n", | |
6293 | b->number); | |
6294 | ||
6295 | return PRINT_SRC_AND_LOC; | |
6296 | } | |
6297 | ||
6298 | static void | |
6299 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6300 | { | |
6301 | if (addressprint) | |
6302 | { | |
6303 | annotate_field (4); | |
5cab636d | 6304 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6305 | } |
6306 | annotate_field (5); | |
5cab636d | 6307 | *last_addr = b->loc->address; |
3086aeae DJ |
6308 | if (strstr (b->addr_string, "throw") != NULL) |
6309 | ui_out_field_string (uiout, "what", "exception throw"); | |
6310 | else | |
6311 | ui_out_field_string (uiout, "what", "exception catch"); | |
6312 | } | |
6313 | ||
6314 | static void | |
6315 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6316 | { | |
6317 | if (strstr (b->addr_string, "throw") != NULL) | |
6318 | printf_filtered ("Catchpoint %d (throw)", b->number); | |
6319 | else | |
6320 | printf_filtered ("Catchpoint %d (catch)", b->number); | |
6321 | } | |
6322 | ||
6323 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6324 | print_exception_catchpoint, | |
6325 | print_one_exception_catchpoint, | |
6326 | print_mention_exception_catchpoint | |
6327 | }; | |
6328 | ||
6329 | static int | |
6330 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6331 | enum exception_event_kind ex_event, int from_tty) | |
6332 | { | |
6333 | char *trigger_func_name, *nameptr; | |
6334 | struct symtabs_and_lines sals; | |
6335 | struct breakpoint *b; | |
6336 | ||
6337 | if (ex_event == EX_EVENT_CATCH) | |
6338 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6339 | else | |
6340 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6341 | ||
6342 | nameptr = trigger_func_name; | |
68219205 | 6343 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6344 | if (sals.nelts == 0) |
6345 | { | |
b59661bd | 6346 | xfree (trigger_func_name); |
3086aeae DJ |
6347 | return 0; |
6348 | } | |
6349 | ||
6350 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6351 | set_breakpoint_count (breakpoint_count + 1); | |
6352 | b->number = breakpoint_count; | |
6353 | b->cond = NULL; | |
6354 | b->cond_string = (cond_string == NULL) ? | |
6355 | NULL : savestring (cond_string, strlen (cond_string)); | |
6356 | b->thread = -1; | |
6357 | b->addr_string = trigger_func_name; | |
6358 | b->enable_state = bp_enabled; | |
6359 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6360 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6361 | ||
b59661bd | 6362 | xfree (sals.sals); |
3086aeae DJ |
6363 | mention (b); |
6364 | return 1; | |
6365 | } | |
6366 | ||
c5aa993b | 6367 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6368 | |
6369 | static void | |
fba45db2 KB |
6370 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6371 | int tempflag, int from_tty) | |
c906108c | 6372 | { |
c5aa993b JM |
6373 | char *cond_string = NULL; |
6374 | struct symtab_and_line *sal = NULL; | |
6375 | ||
c906108c | 6376 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6377 | |
c906108c SS |
6378 | cond_string = ep_parse_optional_if_clause (&arg); |
6379 | ||
6380 | if ((*arg != '\0') && !isspace (*arg)) | |
6381 | error ("Junk at end of arguments."); | |
6382 | ||
6383 | if ((ex_event != EX_EVENT_THROW) && | |
6384 | (ex_event != EX_EVENT_CATCH)) | |
6385 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6386 | ||
3086aeae DJ |
6387 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6388 | return; | |
6389 | ||
c906108c SS |
6390 | /* See if we can find a callback routine */ |
6391 | sal = target_enable_exception_callback (ex_event, 1); | |
6392 | ||
c5aa993b | 6393 | if (sal) |
c906108c SS |
6394 | { |
6395 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6396 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6397 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6398 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6399 | else |
53a5351d | 6400 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6401 | } |
c5aa993b | 6402 | |
69f567ae | 6403 | warning ("Unsupported with this platform/compiler combination."); |
c906108c SS |
6404 | } |
6405 | ||
6406 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6407 | inside a catch_errors */ | |
6408 | ||
6409 | static int | |
4efb68b1 | 6410 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6411 | { |
6412 | args_for_catchpoint_enable *args = arg; | |
6413 | struct symtab_and_line *sal; | |
b5de0fa7 | 6414 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6415 | if (sal == NULL) |
6416 | return 0; | |
6417 | else if (sal == (struct symtab_and_line *) -1) | |
6418 | return -1; | |
6419 | else | |
c5aa993b | 6420 | return 1; /*is valid */ |
c906108c SS |
6421 | } |
6422 | ||
c906108c | 6423 | static void |
fba45db2 | 6424 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6425 | { |
c5aa993b | 6426 | |
c906108c SS |
6427 | /* The first argument may be an event name, such as "start" or "load". |
6428 | If so, then handle it as such. If it doesn't match an event name, | |
6429 | then attempt to interpret it as an exception name. (This latter is | |
6430 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6431 | |
c906108c | 6432 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6433 | char *arg1_start = arg; |
6434 | char *arg1_end; | |
6435 | int arg1_length; | |
6436 | ||
c906108c SS |
6437 | if (arg1_start == NULL) |
6438 | { | |
c5aa993b | 6439 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6440 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6441 | /* return; */ | |
c5aa993b | 6442 | /* Now, this is not allowed */ |
c906108c SS |
6443 | error ("Catch requires an event name."); |
6444 | ||
6445 | } | |
6446 | arg1_end = ep_find_event_name_end (arg1_start); | |
6447 | if (arg1_end == NULL) | |
6448 | error ("catch requires an event"); | |
6449 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6450 | |
c906108c SS |
6451 | /* Try to match what we found against known event names. */ |
6452 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6453 | { | |
6454 | error ("Catch of signal not yet implemented"); | |
6455 | } | |
6456 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6457 | { | |
53a5351d JM |
6458 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6459 | tempflag, from_tty); | |
c906108c SS |
6460 | } |
6461 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6462 | { | |
53a5351d JM |
6463 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6464 | tempflag, from_tty); | |
c906108c SS |
6465 | } |
6466 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6467 | { | |
6468 | error ("Catch of thread_start not yet implemented"); | |
6469 | } | |
6470 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6471 | { | |
6472 | error ("Catch of thread_exit not yet implemented"); | |
6473 | } | |
6474 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6475 | { | |
6476 | error ("Catch of thread_join not yet implemented"); | |
6477 | } | |
6478 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6479 | { | |
6480 | error ("Catch of start not yet implemented"); | |
6481 | } | |
6482 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6483 | { | |
6484 | error ("Catch of exit not yet implemented"); | |
6485 | } | |
6486 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6487 | { | |
c5aa993b | 6488 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6489 | } |
6490 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6491 | { | |
c5aa993b | 6492 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6493 | } |
6494 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6495 | { | |
c5aa993b | 6496 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6497 | } |
6498 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6499 | { | |
c5aa993b | 6500 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6501 | } |
6502 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6503 | { | |
c5aa993b | 6504 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6505 | } |
6506 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6507 | { | |
6508 | error ("Catch of stop not yet implemented"); | |
6509 | } | |
c5aa993b | 6510 | |
c906108c SS |
6511 | /* This doesn't appear to be an event name */ |
6512 | ||
6513 | else | |
6514 | { | |
6515 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6516 | as the name of an exception */ |
c906108c | 6517 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6518 | /* Now this is not allowed */ |
c906108c SS |
6519 | error ("Unknown event kind specified for catch"); |
6520 | ||
6521 | } | |
6522 | } | |
6523 | ||
6524 | /* Used by the gui, could be made a worker for other things. */ | |
6525 | ||
6526 | struct breakpoint * | |
fba45db2 | 6527 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6528 | { |
6529 | struct breakpoint *b; | |
4d28f7a8 | 6530 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6531 | set_breakpoint_count (breakpoint_count + 1); |
6532 | b->number = breakpoint_count; | |
c906108c SS |
6533 | b->cond = 0; |
6534 | b->thread = -1; | |
6535 | return b; | |
6536 | } | |
6537 | ||
c906108c | 6538 | static void |
fba45db2 | 6539 | catch_command (char *arg, int from_tty) |
c906108c SS |
6540 | { |
6541 | catch_command_1 (arg, 0, from_tty); | |
6542 | } | |
6543 | \f | |
6544 | ||
6545 | static void | |
fba45db2 | 6546 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6547 | { |
6548 | catch_command_1 (arg, 1, from_tty); | |
6549 | } | |
6550 | ||
80f8a6eb | 6551 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6552 | |
6553 | static void | |
fba45db2 | 6554 | clear_command (char *arg, int from_tty) |
c906108c | 6555 | { |
80f8a6eb | 6556 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6557 | int default_match; |
6558 | struct symtabs_and_lines sals; | |
6559 | struct symtab_and_line sal; | |
c906108c SS |
6560 | int i; |
6561 | ||
6562 | if (arg) | |
6563 | { | |
6564 | sals = decode_line_spec (arg, 1); | |
6565 | default_match = 0; | |
6566 | } | |
6567 | else | |
6568 | { | |
c5aa993b | 6569 | sals.sals = (struct symtab_and_line *) |
c906108c | 6570 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6571 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6572 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6573 | sal.line = default_breakpoint_line; |
6574 | sal.symtab = default_breakpoint_symtab; | |
6575 | sal.pc = default_breakpoint_address; | |
6576 | if (sal.symtab == 0) | |
6577 | error ("No source file specified."); | |
6578 | ||
6579 | sals.sals[0] = sal; | |
6580 | sals.nelts = 1; | |
6581 | ||
6582 | default_match = 1; | |
6583 | } | |
6584 | ||
6585 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6586 | to it. Do it in two passes, solely to preserve the current |
6587 | behavior that from_tty is forced true if we delete more than | |
6588 | one breakpoint. */ | |
c906108c | 6589 | |
80f8a6eb | 6590 | found = NULL; |
c906108c SS |
6591 | for (i = 0; i < sals.nelts; i++) |
6592 | { | |
6593 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6594 | If line given (pc == 0), clear all bpts on specified line. |
6595 | If defaulting, clear all bpts on default line | |
c906108c | 6596 | or at default pc. |
c5aa993b JM |
6597 | |
6598 | defaulting sal.pc != 0 tests to do | |
6599 | ||
6600 | 0 1 pc | |
6601 | 1 1 pc _and_ line | |
6602 | 0 0 line | |
6603 | 1 0 <can't happen> */ | |
c906108c SS |
6604 | |
6605 | sal = sals.sals[i]; | |
80f8a6eb | 6606 | prev = NULL; |
c906108c | 6607 | |
80f8a6eb MS |
6608 | /* Find all matching breakpoints, remove them from the |
6609 | breakpoint chain, and add them to the 'found' chain. */ | |
6610 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6611 | { |
80f8a6eb MS |
6612 | /* Are we going to delete b? */ |
6613 | if (b->type != bp_none | |
6614 | && b->type != bp_watchpoint | |
6615 | && b->type != bp_hardware_watchpoint | |
6616 | && b->type != bp_read_watchpoint | |
6617 | && b->type != bp_access_watchpoint | |
6618 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6619 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6620 | && (!section_is_overlay (b->loc->section) |
6621 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6622 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6623 | || ((default_match || (0 == sal.pc)) | |
6624 | && b->source_file != NULL | |
6625 | && sal.symtab != NULL | |
6314a349 | 6626 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
80f8a6eb MS |
6627 | && b->line_number == sal.line))) |
6628 | /* Yes, if sal source file and line matches b. */ | |
6629 | { | |
6630 | /* Remove it from breakpoint_chain... */ | |
6631 | if (b == breakpoint_chain) | |
6632 | { | |
6633 | /* b is at the head of the list */ | |
6634 | breakpoint_chain = b->next; | |
6635 | } | |
6636 | else | |
6637 | { | |
6638 | prev->next = b->next; | |
6639 | } | |
6640 | /* And add it to 'found' chain. */ | |
6641 | b->next = found; | |
6642 | found = b; | |
6643 | } | |
c906108c | 6644 | else |
80f8a6eb MS |
6645 | { |
6646 | /* Keep b, and keep a pointer to it. */ | |
6647 | prev = b; | |
6648 | } | |
c906108c | 6649 | } |
80f8a6eb MS |
6650 | } |
6651 | /* Now go thru the 'found' chain and delete them. */ | |
6652 | if (found == 0) | |
6653 | { | |
6654 | if (arg) | |
6655 | error ("No breakpoint at %s.", arg); | |
6656 | else | |
6657 | error ("No breakpoint at this line."); | |
6658 | } | |
c906108c | 6659 | |
80f8a6eb MS |
6660 | if (found->next) |
6661 | from_tty = 1; /* Always report if deleted more than one */ | |
6662 | if (from_tty) | |
6663 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6664 | breakpoints_changed (); | |
6665 | while (found) | |
6666 | { | |
c5aa993b | 6667 | if (from_tty) |
80f8a6eb MS |
6668 | printf_unfiltered ("%d ", found->number); |
6669 | tmp = found->next; | |
6670 | delete_breakpoint (found); | |
6671 | found = tmp; | |
c906108c | 6672 | } |
80f8a6eb MS |
6673 | if (from_tty) |
6674 | putchar_unfiltered ('\n'); | |
c906108c SS |
6675 | } |
6676 | \f | |
6677 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6678 | all breakpoints that are marked for deletion, whether hit or not. | |
6679 | This is called after any breakpoint is hit, or after errors. */ | |
6680 | ||
6681 | void | |
fba45db2 | 6682 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6683 | { |
6684 | struct breakpoint *b, *temp; | |
6685 | ||
6686 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6687 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6688 | && bs->stop) |
6689 | delete_breakpoint (bs->breakpoint_at); | |
6690 | ||
6691 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6692 | { |
b5de0fa7 | 6693 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6694 | delete_breakpoint (b); |
6695 | } | |
c906108c SS |
6696 | } |
6697 | ||
53a5351d JM |
6698 | /* Delete a breakpoint and clean up all traces of it in the data |
6699 | structures. */ | |
c906108c SS |
6700 | |
6701 | void | |
fba45db2 | 6702 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6703 | { |
52f0bd74 AC |
6704 | struct breakpoint *b; |
6705 | bpstat bs; | |
7cc221ef | 6706 | struct bp_location *loc; |
c906108c SS |
6707 | |
6708 | if (bpt == NULL) | |
6709 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6710 | ||
6711 | ||
6712 | /* Has this bp already been deleted? This can happen because multiple | |
6713 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6714 | ||
6715 | One example of this happening is a watchpoint's scope bp. When the | |
6716 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6717 | delete it. We also delete its scope bp. But the scope bp is marked | |
6718 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6719 | checked for auto-deleting bp's, which are deleted. | |
6720 | ||
6721 | A real solution to this problem might involve reference counts in bp's, | |
6722 | and/or giving them pointers back to their referencing bpstat's, and | |
6723 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 6724 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
6725 | if (bpt->type == bp_none) |
6726 | return; | |
6727 | ||
9a4105ab AC |
6728 | if (deprecated_delete_breakpoint_hook) |
6729 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 6730 | breakpoint_delete_event (bpt->number); |
c906108c | 6731 | |
5cab636d | 6732 | if (bpt->loc->inserted) |
0bde7532 | 6733 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6734 | |
7270d8f2 OF |
6735 | free_valchain (bpt->loc); |
6736 | ||
c906108c SS |
6737 | if (breakpoint_chain == bpt) |
6738 | breakpoint_chain = bpt->next; | |
6739 | ||
7cc221ef DJ |
6740 | if (bp_location_chain == bpt->loc) |
6741 | bp_location_chain = bpt->loc->next; | |
6742 | ||
c906108c SS |
6743 | /* If we have callback-style exception catchpoints, don't go through |
6744 | the adjustments to the C++ runtime library etc. if the inferior | |
6745 | isn't actually running. target_enable_exception_callback for a | |
6746 | null target ops vector gives an undesirable error message, so we | |
6747 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
1272ad14 | 6748 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6749 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6750 | { | |
53a5351d | 6751 | /* Format possible error msg */ |
9ebf4acf AC |
6752 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6753 | bpt->number); | |
6754 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
6755 | args_for_catchpoint_enable args; | |
53a5351d JM |
6756 | args.kind = bpt->type == bp_catch_catch ? |
6757 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6758 | args.enable_p = 0; |
c906108c SS |
6759 | catch_errors (cover_target_enable_exception_callback, &args, |
6760 | message, RETURN_MASK_ALL); | |
9ebf4acf | 6761 | do_cleanups (cleanups); |
c906108c SS |
6762 | } |
6763 | ||
6764 | ||
6765 | ALL_BREAKPOINTS (b) | |
6766 | if (b->next == bpt) | |
c5aa993b JM |
6767 | { |
6768 | b->next = bpt->next; | |
6769 | break; | |
6770 | } | |
c906108c | 6771 | |
7cc221ef DJ |
6772 | ALL_BP_LOCATIONS (loc) |
6773 | if (loc->next == bpt->loc) | |
6774 | { | |
6775 | loc->next = bpt->loc->next; | |
6776 | break; | |
6777 | } | |
6778 | ||
9f60f21b | 6779 | check_duplicates (bpt); |
c906108c SS |
6780 | /* If this breakpoint was inserted, and there is another breakpoint |
6781 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 6782 | if (bpt->loc->inserted |
c906108c SS |
6783 | && bpt->type != bp_hardware_watchpoint |
6784 | && bpt->type != bp_read_watchpoint | |
6785 | && bpt->type != bp_access_watchpoint | |
6786 | && bpt->type != bp_catch_fork | |
6787 | && bpt->type != bp_catch_vfork | |
6788 | && bpt->type != bp_catch_exec) | |
6789 | { | |
6790 | ALL_BREAKPOINTS (b) | |
5cab636d | 6791 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 6792 | && b->loc->section == bpt->loc->section |
5cab636d | 6793 | && !b->loc->duplicate |
b5de0fa7 EZ |
6794 | && b->enable_state != bp_disabled |
6795 | && b->enable_state != bp_shlib_disabled | |
0101ce28 | 6796 | && !b->pending |
b5de0fa7 | 6797 | && b->enable_state != bp_call_disabled) |
c5aa993b JM |
6798 | { |
6799 | int val; | |
53a5351d | 6800 | |
c2c6d25f JM |
6801 | /* We should never reach this point if there is a permanent |
6802 | breakpoint at the same address as the one being deleted. | |
6803 | If there is a permanent breakpoint somewhere, it should | |
6804 | always be the only one inserted. */ | |
b5de0fa7 | 6805 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6806 | internal_error (__FILE__, __LINE__, |
6807 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6808 | "a permanent breakpoint"); |
6809 | ||
53a5351d | 6810 | if (b->type == bp_hardware_breakpoint) |
5cab636d | 6811 | val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6812 | else |
5cab636d | 6813 | val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6814 | |
81d0cc19 | 6815 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6816 | if (val != 0) |
6817 | { | |
81d0cc19 GS |
6818 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6819 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6820 | ||
6821 | ||
6822 | if (b->type == bp_hardware_breakpoint) | |
6823 | { | |
6824 | fprintf_unfiltered (tmp_error_stream, | |
6825 | "Cannot insert hardware breakpoint %d.\n" | |
6826 | "You may have requested too many hardware breakpoints.\n", | |
6827 | b->number); | |
6828 | } | |
6829 | else | |
6830 | { | |
6831 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6832 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
5cab636d | 6833 | print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
6834 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
6835 | safe_strerror (val)); | |
6836 | } | |
6837 | ||
6838 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6839 | target_terminal_ours_for_output (); |
81d0cc19 | 6840 | error_stream(tmp_error_stream); |
c5aa993b JM |
6841 | } |
6842 | else | |
5cab636d | 6843 | b->loc->inserted = 1; |
c5aa993b | 6844 | } |
c906108c SS |
6845 | } |
6846 | ||
6847 | free_command_lines (&bpt->commands); | |
6848 | if (bpt->cond) | |
b8c9b27d | 6849 | xfree (bpt->cond); |
c906108c | 6850 | if (bpt->cond_string != NULL) |
b8c9b27d | 6851 | xfree (bpt->cond_string); |
c906108c | 6852 | if (bpt->addr_string != NULL) |
b8c9b27d | 6853 | xfree (bpt->addr_string); |
c906108c | 6854 | if (bpt->exp != NULL) |
b8c9b27d | 6855 | xfree (bpt->exp); |
c906108c | 6856 | if (bpt->exp_string != NULL) |
b8c9b27d | 6857 | xfree (bpt->exp_string); |
c906108c SS |
6858 | if (bpt->val != NULL) |
6859 | value_free (bpt->val); | |
6860 | if (bpt->source_file != NULL) | |
b8c9b27d | 6861 | xfree (bpt->source_file); |
c906108c | 6862 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6863 | xfree (bpt->dll_pathname); |
c906108c | 6864 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6865 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6866 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6867 | xfree (bpt->exec_pathname); |
c906108c SS |
6868 | |
6869 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6870 | /* FIXME, how can we find all bpstat's? | |
6871 | We just check stop_bpstat for now. */ | |
6872 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6873 | if (bs->breakpoint_at == bpt) | |
6874 | { | |
6875 | bs->breakpoint_at = NULL; | |
c906108c | 6876 | bs->old_val = NULL; |
c2b8ed2c | 6877 | /* bs->commands will be freed later. */ |
c906108c SS |
6878 | } |
6879 | /* On the chance that someone will soon try again to delete this same | |
6880 | bp, we mark it as deleted before freeing its storage. */ | |
6881 | bpt->type = bp_none; | |
6882 | ||
5cab636d | 6883 | xfree (bpt->loc); |
b8c9b27d | 6884 | xfree (bpt); |
c906108c SS |
6885 | } |
6886 | ||
4d6140d9 AC |
6887 | static void |
6888 | do_delete_breakpoint_cleanup (void *b) | |
6889 | { | |
6890 | delete_breakpoint (b); | |
6891 | } | |
6892 | ||
6893 | struct cleanup * | |
6894 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6895 | { | |
6896 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6897 | } | |
6898 | ||
6899 | struct cleanup * | |
6900 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6901 | { | |
6902 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6903 | } | |
6904 | ||
c906108c | 6905 | void |
fba45db2 | 6906 | delete_command (char *arg, int from_tty) |
c906108c SS |
6907 | { |
6908 | struct breakpoint *b, *temp; | |
6909 | ||
ea9365bb TT |
6910 | dont_repeat (); |
6911 | ||
c906108c SS |
6912 | if (arg == 0) |
6913 | { | |
6914 | int breaks_to_delete = 0; | |
6915 | ||
6916 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6917 | Do not delete internal or call-dummy breakpoints, these |
6918 | have to be deleted with an explicit breakpoint number argument. */ | |
6919 | ALL_BREAKPOINTS (b) | |
6920 | { | |
6921 | if (b->type != bp_call_dummy && | |
6922 | b->type != bp_shlib_event && | |
c4093a6a | 6923 | b->type != bp_thread_event && |
1900040c | 6924 | b->type != bp_overlay_event && |
c5aa993b JM |
6925 | b->number >= 0) |
6926 | breaks_to_delete = 1; | |
6927 | } | |
c906108c SS |
6928 | |
6929 | /* Ask user only if there are some breakpoints to delete. */ | |
6930 | if (!from_tty | |
6931 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6932 | { | |
c5aa993b JM |
6933 | ALL_BREAKPOINTS_SAFE (b, temp) |
6934 | { | |
6935 | if (b->type != bp_call_dummy && | |
6936 | b->type != bp_shlib_event && | |
c4093a6a | 6937 | b->type != bp_thread_event && |
1900040c | 6938 | b->type != bp_overlay_event && |
c5aa993b JM |
6939 | b->number >= 0) |
6940 | delete_breakpoint (b); | |
6941 | } | |
c906108c SS |
6942 | } |
6943 | } | |
6944 | else | |
6945 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6946 | } | |
6947 | ||
6948 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6949 | The value we return ends up being the return value from catch_errors. | |
6950 | Unused in this case. */ | |
6951 | ||
6952 | static int | |
4efb68b1 | 6953 | breakpoint_re_set_one (void *bint) |
c906108c | 6954 | { |
53a5351d JM |
6955 | /* get past catch_errs */ |
6956 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6957 | struct value *mark; |
6958 | int i; | |
84acb35a JJ |
6959 | int not_found; |
6960 | int *not_found_ptr = NULL; | |
c906108c SS |
6961 | struct symtabs_and_lines sals; |
6962 | char *s; | |
b5de0fa7 | 6963 | enum enable_state save_enable; |
c906108c SS |
6964 | |
6965 | switch (b->type) | |
6966 | { | |
6967 | case bp_none: | |
53a5351d JM |
6968 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6969 | b->number); | |
c906108c SS |
6970 | return 0; |
6971 | case bp_breakpoint: | |
6972 | case bp_hardware_breakpoint: | |
6973 | case bp_catch_load: | |
6974 | case bp_catch_unload: | |
6975 | if (b->addr_string == NULL) | |
6976 | { | |
6977 | /* Anything without a string can't be re-set. */ | |
6978 | delete_breakpoint (b); | |
6979 | return 0; | |
6980 | } | |
b18c45ed AC |
6981 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
6982 | ||
6983 | ``And a hack it is, although Apple's Darwin version of GDB | |
6984 | contains an almost identical hack to implement a "future | |
6985 | break" command. It seems to work in many real world cases, | |
6986 | but it is easy to come up with a test case where the patch | |
6987 | doesn't help at all.'' | |
6988 | ||
6989 | ``It seems that the way GDB implements breakpoints - in - | |
6990 | shared - libraries was designed for a.out shared library | |
6991 | systems (SunOS 4) where shared libraries were loaded at a | |
6992 | fixed address in memory. Since ELF shared libraries can (and | |
6993 | will) be loaded at any address in memory, things break. | |
6994 | Fixing this is not trivial. Therefore, I'm not sure whether | |
6995 | we should add this hack to the branch only. I cannot | |
6996 | guarantee that things will be fixed on the trunk in the near | |
6997 | future.'' | |
6998 | ||
6999 | In case we have a problem, disable this breakpoint. We'll | |
7000 | restore its status if we succeed. Don't disable a | |
7001 | shlib_disabled breakpoint though. There's a fair chance we | |
7002 | can't re-set it if the shared library it's in hasn't been | |
7003 | loaded yet. */ | |
0101ce28 JJ |
7004 | |
7005 | if (b->pending) | |
7006 | break; | |
7007 | ||
b5de0fa7 | 7008 | save_enable = b->enable_state; |
b18c45ed AC |
7009 | if (b->enable_state != bp_shlib_disabled) |
7010 | b->enable_state = bp_disabled; | |
84acb35a JJ |
7011 | else |
7012 | /* If resetting a shlib-disabled breakpoint, we don't want to | |
7013 | see an error message if it is not found since we will expect | |
7014 | this to occur until the shared library is finally reloaded. | |
7015 | We accomplish this by giving decode_line_1 a pointer to use | |
7016 | for silent notification that the symbol is not found. */ | |
7017 | not_found_ptr = ¬_found; | |
c906108c SS |
7018 | |
7019 | set_language (b->language); | |
7020 | input_radix = b->input_radix; | |
7021 | s = b->addr_string; | |
84acb35a JJ |
7022 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7023 | not_found_ptr); | |
c906108c SS |
7024 | for (i = 0; i < sals.nelts; i++) |
7025 | { | |
7026 | resolve_sal_pc (&sals.sals[i]); | |
7027 | ||
7028 | /* Reparse conditions, they might contain references to the | |
7029 | old symtab. */ | |
7030 | if (b->cond_string != NULL) | |
7031 | { | |
7032 | s = b->cond_string; | |
7033 | if (b->cond) | |
fad0733a DJ |
7034 | { |
7035 | xfree (b->cond); | |
7036 | /* Avoid re-freeing b->exp if an error during the call | |
7037 | to parse_exp_1. */ | |
7038 | b->cond = NULL; | |
7039 | } | |
c906108c SS |
7040 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7041 | } | |
7042 | ||
c5aa993b | 7043 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 7044 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
7045 | /* ...or new and old breakpoints both have source files, and |
7046 | the source file name or the line number changes... */ | |
c906108c SS |
7047 | || (b->source_file != NULL |
7048 | && sals.sals[i].symtab != NULL | |
6314a349 | 7049 | && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0 |
c906108c | 7050 | || b->line_number != sals.sals[i].line) |
c906108c | 7051 | ) |
c5aa993b JM |
7052 | /* ...or we switch between having a source file and not having |
7053 | one. */ | |
7054 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7055 | ) | |
c906108c SS |
7056 | { |
7057 | if (b->source_file != NULL) | |
b8c9b27d | 7058 | xfree (b->source_file); |
c906108c SS |
7059 | if (sals.sals[i].symtab == NULL) |
7060 | b->source_file = NULL; | |
7061 | else | |
7062 | b->source_file = | |
7063 | savestring (sals.sals[i].symtab->filename, | |
7064 | strlen (sals.sals[i].symtab->filename)); | |
7065 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
7066 | b->loc->requested_address = sals.sals[i].pc; |
7067 | b->loc->address | |
88f7da05 KB |
7068 | = adjust_breakpoint_address (b->loc->requested_address, |
7069 | b->type); | |
c906108c | 7070 | |
c5aa993b | 7071 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7072 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7073 | breakpoints. */ |
c906108c SS |
7074 | |
7075 | mention (b); | |
7076 | ||
7077 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7078 | rather than once for every breakpoint. */ |
c906108c SS |
7079 | breakpoints_changed (); |
7080 | } | |
cf3a9e5b | 7081 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 7082 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7083 | |
7084 | ||
c5aa993b | 7085 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7086 | can be used. */ |
9f60f21b | 7087 | check_duplicates (b); |
c906108c SS |
7088 | |
7089 | } | |
b8c9b27d | 7090 | xfree (sals.sals); |
c906108c SS |
7091 | break; |
7092 | ||
7093 | case bp_watchpoint: | |
7094 | case bp_hardware_watchpoint: | |
7095 | case bp_read_watchpoint: | |
7096 | case bp_access_watchpoint: | |
7097 | innermost_block = NULL; | |
53a5351d JM |
7098 | /* The issue arises of what context to evaluate this in. The |
7099 | same one as when it was set, but what does that mean when | |
7100 | symbols have been re-read? We could save the filename and | |
7101 | functionname, but if the context is more local than that, the | |
7102 | best we could do would be something like how many levels deep | |
7103 | and which index at that particular level, but that's going to | |
7104 | be less stable than filenames or function names. */ | |
7105 | ||
c906108c SS |
7106 | /* So for now, just use a global context. */ |
7107 | if (b->exp) | |
a355c7de AC |
7108 | { |
7109 | xfree (b->exp); | |
7110 | /* Avoid re-freeing b->exp if an error during the call to | |
7111 | parse_expression. */ | |
7112 | b->exp = NULL; | |
7113 | } | |
c906108c SS |
7114 | b->exp = parse_expression (b->exp_string); |
7115 | b->exp_valid_block = innermost_block; | |
7116 | mark = value_mark (); | |
7117 | if (b->val) | |
a355c7de AC |
7118 | { |
7119 | value_free (b->val); | |
7120 | /* Avoid re-freeing b->val if an error during the call to | |
7121 | evaluate_expression. */ | |
7122 | b->val = NULL; | |
7123 | } | |
c906108c SS |
7124 | b->val = evaluate_expression (b->exp); |
7125 | release_value (b->val); | |
468d015d | 7126 | if (VALUE_LAZY (b->val) && breakpoint_enabled (b)) |
c906108c SS |
7127 | value_fetch_lazy (b->val); |
7128 | ||
7129 | if (b->cond_string != NULL) | |
7130 | { | |
7131 | s = b->cond_string; | |
7132 | if (b->cond) | |
a355c7de AC |
7133 | { |
7134 | xfree (b->cond); | |
7135 | /* Avoid re-freeing b->exp if an error during the call | |
7136 | to parse_exp_1. */ | |
7137 | b->cond = NULL; | |
7138 | } | |
c5aa993b | 7139 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7140 | } |
468d015d | 7141 | if (breakpoint_enabled (b)) |
c906108c SS |
7142 | mention (b); |
7143 | value_free_to_mark (mark); | |
7144 | break; | |
c5aa993b JM |
7145 | case bp_catch_catch: |
7146 | case bp_catch_throw: | |
c906108c | 7147 | break; |
c5aa993b JM |
7148 | /* We needn't really do anything to reset these, since the mask |
7149 | that requests them is unaffected by e.g., new libraries being | |
7150 | loaded. */ | |
c906108c SS |
7151 | case bp_catch_fork: |
7152 | case bp_catch_vfork: | |
7153 | case bp_catch_exec: | |
7154 | break; | |
c5aa993b | 7155 | |
c906108c SS |
7156 | default: |
7157 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7158 | /* fall through */ | |
1900040c MS |
7159 | /* Delete longjmp and overlay event breakpoints; they will be |
7160 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7161 | case bp_longjmp: |
7162 | case bp_longjmp_resume: | |
1900040c | 7163 | case bp_overlay_event: |
c906108c SS |
7164 | delete_breakpoint (b); |
7165 | break; | |
7166 | ||
c5aa993b JM |
7167 | /* This breakpoint is special, it's set up when the inferior |
7168 | starts and we really don't want to touch it. */ | |
c906108c SS |
7169 | case bp_shlib_event: |
7170 | ||
c4093a6a JM |
7171 | /* Like bp_shlib_event, this breakpoint type is special. |
7172 | Once it is set up, we do not want to touch it. */ | |
7173 | case bp_thread_event: | |
7174 | ||
c5aa993b JM |
7175 | /* Keep temporary breakpoints, which can be encountered when we step |
7176 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7177 | Otherwise these should have been blown away via the cleanup chain | |
7178 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7179 | case bp_until: |
7180 | case bp_finish: | |
7181 | case bp_watchpoint_scope: | |
7182 | case bp_call_dummy: | |
7183 | case bp_step_resume: | |
7184 | break; | |
7185 | } | |
7186 | ||
7187 | return 0; | |
7188 | } | |
7189 | ||
7190 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7191 | void | |
fba45db2 | 7192 | breakpoint_re_set (void) |
c906108c SS |
7193 | { |
7194 | struct breakpoint *b, *temp; | |
7195 | enum language save_language; | |
7196 | int save_input_radix; | |
c5aa993b | 7197 | |
c906108c SS |
7198 | save_language = current_language->la_language; |
7199 | save_input_radix = input_radix; | |
7200 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7201 | { |
53a5351d | 7202 | /* Format possible error msg */ |
9ebf4acf AC |
7203 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7204 | b->number); | |
7205 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7206 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7207 | do_cleanups (cleanups); |
c5aa993b | 7208 | } |
c906108c SS |
7209 | set_language (save_language); |
7210 | input_radix = save_input_radix; | |
7211 | ||
9df628e0 RE |
7212 | if (GET_LONGJMP_TARGET_P ()) |
7213 | { | |
7214 | create_longjmp_breakpoint ("longjmp"); | |
7215 | create_longjmp_breakpoint ("_longjmp"); | |
7216 | create_longjmp_breakpoint ("siglongjmp"); | |
7217 | create_longjmp_breakpoint ("_siglongjmp"); | |
7218 | create_longjmp_breakpoint (NULL); | |
7219 | } | |
1900040c MS |
7220 | |
7221 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7222 | } |
7223 | \f | |
c906108c SS |
7224 | /* Reset the thread number of this breakpoint: |
7225 | ||
7226 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7227 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7228 | void |
fba45db2 | 7229 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7230 | { |
7231 | if (b->thread != -1) | |
7232 | { | |
39f77062 KB |
7233 | if (in_thread_list (inferior_ptid)) |
7234 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7235 | } |
7236 | } | |
7237 | ||
03ac34d5 MS |
7238 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7239 | If from_tty is nonzero, it prints a message to that effect, | |
7240 | which ends with a period (no newline). */ | |
7241 | ||
c906108c | 7242 | void |
fba45db2 | 7243 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7244 | { |
52f0bd74 | 7245 | struct breakpoint *b; |
c906108c SS |
7246 | |
7247 | if (count < 0) | |
7248 | count = 0; | |
7249 | ||
7250 | ALL_BREAKPOINTS (b) | |
7251 | if (b->number == bptnum) | |
c5aa993b JM |
7252 | { |
7253 | b->ignore_count = count; | |
221ea385 KS |
7254 | if (from_tty) |
7255 | { | |
7256 | if (count == 0) | |
7257 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7258 | bptnum); | |
7259 | else if (count == 1) | |
7260 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7261 | bptnum); | |
7262 | else | |
7263 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7264 | count, bptnum); | |
7265 | } | |
c5aa993b | 7266 | breakpoints_changed (); |
221ea385 | 7267 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7268 | return; |
7269 | } | |
c906108c SS |
7270 | |
7271 | error ("No breakpoint number %d.", bptnum); | |
7272 | } | |
7273 | ||
7274 | /* Clear the ignore counts of all breakpoints. */ | |
7275 | void | |
fba45db2 | 7276 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7277 | { |
7278 | struct breakpoint *b; | |
7279 | ||
7280 | ALL_BREAKPOINTS (b) | |
7281 | b->ignore_count = 0; | |
7282 | } | |
7283 | ||
7284 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7285 | ||
7286 | static void | |
fba45db2 | 7287 | ignore_command (char *args, int from_tty) |
c906108c SS |
7288 | { |
7289 | char *p = args; | |
52f0bd74 | 7290 | int num; |
c906108c SS |
7291 | |
7292 | if (p == 0) | |
7293 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7294 | |
c906108c | 7295 | num = get_number (&p); |
5c44784c JM |
7296 | if (num == 0) |
7297 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7298 | if (*p == 0) |
7299 | error ("Second argument (specified ignore-count) is missing."); | |
7300 | ||
7301 | set_ignore_count (num, | |
7302 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7303 | from_tty); | |
221ea385 KS |
7304 | if (from_tty) |
7305 | printf_filtered ("\n"); | |
c906108c SS |
7306 | } |
7307 | \f | |
7308 | /* Call FUNCTION on each of the breakpoints | |
7309 | whose numbers are given in ARGS. */ | |
7310 | ||
7311 | static void | |
831662b3 | 7312 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7313 | { |
52f0bd74 | 7314 | char *p = args; |
c906108c | 7315 | char *p1; |
52f0bd74 AC |
7316 | int num; |
7317 | struct breakpoint *b, *tmp; | |
11cf8741 | 7318 | int match; |
c906108c SS |
7319 | |
7320 | if (p == 0) | |
7321 | error_no_arg ("one or more breakpoint numbers"); | |
7322 | ||
7323 | while (*p) | |
7324 | { | |
11cf8741 | 7325 | match = 0; |
c906108c | 7326 | p1 = p; |
c5aa993b | 7327 | |
5c44784c JM |
7328 | num = get_number_or_range (&p1); |
7329 | if (num == 0) | |
c5aa993b | 7330 | { |
5c44784c JM |
7331 | warning ("bad breakpoint number at or near '%s'", p); |
7332 | } | |
7333 | else | |
7334 | { | |
7335 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7336 | if (b->number == num) | |
7337 | { | |
7338 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7339 | match = 1; |
5c44784c JM |
7340 | function (b); |
7341 | if (related_breakpoint) | |
7342 | function (related_breakpoint); | |
11cf8741 | 7343 | break; |
5c44784c | 7344 | } |
11cf8741 JM |
7345 | if (match == 0) |
7346 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7347 | } |
c906108c SS |
7348 | p = p1; |
7349 | } | |
7350 | } | |
7351 | ||
1900040c MS |
7352 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7353 | If from_tty is nonzero, it prints a message to that effect, | |
7354 | which ends with a period (no newline). */ | |
7355 | ||
c906108c | 7356 | void |
fba45db2 | 7357 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7358 | { |
7359 | /* Never disable a watchpoint scope breakpoint; we want to | |
7360 | hit them when we leave scope so we can delete both the | |
7361 | watchpoint and its scope breakpoint at that time. */ | |
7362 | if (bpt->type == bp_watchpoint_scope) | |
7363 | return; | |
7364 | ||
c2c6d25f | 7365 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7366 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7367 | return; |
7368 | ||
b5de0fa7 | 7369 | bpt->enable_state = bp_disabled; |
c906108c | 7370 | |
9f60f21b | 7371 | check_duplicates (bpt); |
c906108c | 7372 | |
9a4105ab AC |
7373 | if (deprecated_modify_breakpoint_hook) |
7374 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7375 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7376 | } |
7377 | ||
c906108c | 7378 | static void |
fba45db2 | 7379 | disable_command (char *args, int from_tty) |
c906108c | 7380 | { |
52f0bd74 | 7381 | struct breakpoint *bpt; |
c906108c SS |
7382 | if (args == 0) |
7383 | ALL_BREAKPOINTS (bpt) | |
7384 | switch (bpt->type) | |
c5aa993b JM |
7385 | { |
7386 | case bp_none: | |
53a5351d JM |
7387 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7388 | bpt->number); | |
c5aa993b JM |
7389 | continue; |
7390 | case bp_breakpoint: | |
7391 | case bp_catch_load: | |
7392 | case bp_catch_unload: | |
7393 | case bp_catch_fork: | |
7394 | case bp_catch_vfork: | |
7395 | case bp_catch_exec: | |
7396 | case bp_catch_catch: | |
7397 | case bp_catch_throw: | |
7398 | case bp_hardware_breakpoint: | |
7399 | case bp_watchpoint: | |
7400 | case bp_hardware_watchpoint: | |
7401 | case bp_read_watchpoint: | |
7402 | case bp_access_watchpoint: | |
7403 | disable_breakpoint (bpt); | |
7404 | default: | |
7405 | continue; | |
7406 | } | |
c906108c SS |
7407 | else |
7408 | map_breakpoint_numbers (args, disable_breakpoint); | |
7409 | } | |
7410 | ||
7411 | static void | |
fba45db2 | 7412 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7413 | { |
c906108c SS |
7414 | int target_resources_ok, other_type_used; |
7415 | struct value *mark; | |
7416 | ||
7417 | if (bpt->type == bp_hardware_breakpoint) | |
7418 | { | |
7419 | int i; | |
c5aa993b | 7420 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7421 | target_resources_ok = |
7422 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7423 | i + 1, 0); | |
c906108c | 7424 | if (target_resources_ok == 0) |
c5aa993b | 7425 | error ("No hardware breakpoint support in the target."); |
c906108c | 7426 | else if (target_resources_ok < 0) |
c5aa993b | 7427 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7428 | } |
7429 | ||
0101ce28 | 7430 | if (bpt->pending) |
c906108c | 7431 | { |
0101ce28 | 7432 | if (bpt->enable_state != bp_enabled) |
c906108c | 7433 | { |
0101ce28 JJ |
7434 | /* When enabling a pending breakpoint, we need to check if the breakpoint |
7435 | is resolvable since shared libraries could have been loaded | |
7436 | after the breakpoint was disabled. */ | |
7437 | breakpoints_changed (); | |
7438 | if (resolve_pending_breakpoint (bpt) == GDB_RC_OK) | |
c906108c | 7439 | { |
0101ce28 | 7440 | delete_breakpoint (bpt); |
c906108c SS |
7441 | return; |
7442 | } | |
0101ce28 JJ |
7443 | bpt->enable_state = bp_enabled; |
7444 | bpt->disposition = disposition; | |
c906108c | 7445 | } |
0101ce28 JJ |
7446 | } |
7447 | else /* Not a pending breakpoint. */ | |
7448 | { | |
7449 | if (bpt->enable_state != bp_permanent) | |
7450 | bpt->enable_state = bp_enabled; | |
7451 | bpt->disposition = disposition; | |
7452 | check_duplicates (bpt); | |
7453 | breakpoints_changed (); | |
7454 | ||
7455 | if (bpt->type == bp_watchpoint || | |
7456 | bpt->type == bp_hardware_watchpoint || | |
7457 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7458 | bpt->type == bp_access_watchpoint) |
7459 | { | |
7789d0fa AC |
7460 | struct frame_id saved_frame_id; |
7461 | ||
b04f3ab4 | 7462 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); |
0101ce28 JJ |
7463 | if (bpt->exp_valid_block != NULL) |
7464 | { | |
7465 | struct frame_info *fr = | |
7466 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7467 | if (fr == NULL) | |
7468 | { | |
7469 | printf_filtered ("\ | |
7470 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7471 | is valid is not currently in scope.\n", bpt->number); | |
7472 | bpt->enable_state = bp_disabled; | |
7473 | return; | |
7474 | } | |
0101ce28 JJ |
7475 | select_frame (fr); |
7476 | } | |
7477 | ||
7478 | value_free (bpt->val); | |
7479 | mark = value_mark (); | |
7480 | bpt->val = evaluate_expression (bpt->exp); | |
7481 | release_value (bpt->val); | |
7482 | if (VALUE_LAZY (bpt->val)) | |
7483 | value_fetch_lazy (bpt->val); | |
7484 | ||
7485 | if (bpt->type == bp_hardware_watchpoint || | |
7486 | bpt->type == bp_read_watchpoint || | |
7487 | bpt->type == bp_access_watchpoint) | |
c5aa993b | 7488 | { |
0101ce28 JJ |
7489 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7490 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7491 | ||
7492 | /* Hack around 'unused var' error for some targets here */ | |
7493 | (void) mem_cnt, i; | |
7494 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7495 | bpt->type, i + mem_cnt, other_type_used); | |
7496 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7497 | bp_watchpoint in the following condition */ | |
7498 | if (target_resources_ok < 0) | |
7499 | { | |
7500 | printf_filtered ("\ | |
c906108c SS |
7501 | Cannot enable watchpoint %d because target watch resources\n\ |
7502 | have been allocated for other watchpoints.\n", bpt->number); | |
0101ce28 JJ |
7503 | bpt->enable_state = bp_disabled; |
7504 | value_free_to_mark (mark); | |
7505 | return; | |
7506 | } | |
c5aa993b | 7507 | } |
0101ce28 | 7508 | |
7789d0fa | 7509 | select_frame (frame_find_by_id (saved_frame_id)); |
0101ce28 | 7510 | value_free_to_mark (mark); |
c5aa993b | 7511 | } |
c906108c | 7512 | } |
0101ce28 | 7513 | |
9a4105ab AC |
7514 | if (deprecated_modify_breakpoint_hook) |
7515 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7516 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7517 | } |
7518 | ||
7519 | void | |
fba45db2 | 7520 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7521 | { |
7522 | do_enable_breakpoint (bpt, bpt->disposition); | |
7523 | } | |
7524 | ||
7525 | /* The enable command enables the specified breakpoints (or all defined | |
7526 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7527 | in stopping the inferior. */ |
c906108c | 7528 | |
c906108c | 7529 | static void |
fba45db2 | 7530 | enable_command (char *args, int from_tty) |
c906108c | 7531 | { |
52f0bd74 | 7532 | struct breakpoint *bpt; |
c906108c SS |
7533 | if (args == 0) |
7534 | ALL_BREAKPOINTS (bpt) | |
7535 | switch (bpt->type) | |
c5aa993b JM |
7536 | { |
7537 | case bp_none: | |
53a5351d JM |
7538 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7539 | bpt->number); | |
c5aa993b JM |
7540 | continue; |
7541 | case bp_breakpoint: | |
7542 | case bp_catch_load: | |
7543 | case bp_catch_unload: | |
7544 | case bp_catch_fork: | |
7545 | case bp_catch_vfork: | |
7546 | case bp_catch_exec: | |
7547 | case bp_catch_catch: | |
7548 | case bp_catch_throw: | |
7549 | case bp_hardware_breakpoint: | |
7550 | case bp_watchpoint: | |
7551 | case bp_hardware_watchpoint: | |
7552 | case bp_read_watchpoint: | |
7553 | case bp_access_watchpoint: | |
7554 | enable_breakpoint (bpt); | |
7555 | default: | |
7556 | continue; | |
7557 | } | |
c906108c SS |
7558 | else |
7559 | map_breakpoint_numbers (args, enable_breakpoint); | |
7560 | } | |
7561 | ||
7562 | static void | |
fba45db2 | 7563 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7564 | { |
b5de0fa7 | 7565 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7566 | } |
7567 | ||
c906108c | 7568 | static void |
fba45db2 | 7569 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7570 | { |
7571 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7572 | } | |
7573 | ||
7574 | static void | |
fba45db2 | 7575 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7576 | { |
b5de0fa7 | 7577 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7578 | } |
7579 | ||
c906108c | 7580 | static void |
fba45db2 | 7581 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7582 | { |
7583 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7584 | } | |
7585 | \f | |
fa8d40ab JJ |
7586 | static void |
7587 | set_breakpoint_cmd (char *args, int from_tty) | |
7588 | { | |
7589 | } | |
7590 | ||
7591 | static void | |
7592 | show_breakpoint_cmd (char *args, int from_tty) | |
7593 | { | |
7594 | } | |
7595 | ||
c906108c SS |
7596 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7597 | ||
7598 | struct symtabs_and_lines | |
fba45db2 | 7599 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7600 | { |
7601 | struct symtabs_and_lines sals; | |
7602 | if (string == 0) | |
7603 | error ("Empty line specification."); | |
7604 | if (default_breakpoint_valid) | |
7605 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7606 | default_breakpoint_symtab, |
7607 | default_breakpoint_line, | |
68219205 | 7608 | (char ***) NULL, NULL); |
c906108c SS |
7609 | else |
7610 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7611 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
7612 | if (*string) |
7613 | error ("Junk at end of line specification: %s", string); | |
7614 | return sals; | |
7615 | } | |
7616 | \f | |
7617 | void | |
fba45db2 | 7618 | _initialize_breakpoint (void) |
c906108c | 7619 | { |
fa8d40ab JJ |
7620 | static struct cmd_list_element *breakpoint_set_cmdlist; |
7621 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
7622 | struct cmd_list_element *c; |
7623 | ||
84acb35a JJ |
7624 | #ifdef SOLIB_ADD |
7625 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); | |
7626 | #endif | |
7627 | ||
c906108c SS |
7628 | breakpoint_chain = 0; |
7629 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7630 | before a breakpoint is set. */ | |
7631 | breakpoint_count = 0; | |
7632 | ||
7633 | add_com ("ignore", class_breakpoint, ignore_command, | |
7634 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7635 | Usage is `ignore N COUNT'."); | |
7636 | if (xdb_commands) | |
c5aa993b | 7637 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7638 | |
7639 | add_com ("commands", class_breakpoint, commands_command, | |
7640 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7641 | Give breakpoint number as argument after \"commands\".\n\ | |
7642 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7643 | The commands themselves follow starting on the next line.\n\ | |
7644 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7645 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7646 | then no output is printed when it is hit, except what the commands print."); | |
7647 | ||
7648 | add_com ("condition", class_breakpoint, condition_command, | |
7649 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7650 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7651 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7652 | |
c94fdfd0 EZ |
7653 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7654 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7655 | Like \"break\" except the breakpoint is only temporary,\n\ |
7656 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7657 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7658 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7659 | |
c94fdfd0 EZ |
7660 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7661 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7662 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7663 | some target hardware may not have this support."); | |
5ba2abeb | 7664 | set_cmd_completer (c, location_completer); |
c906108c | 7665 | |
c94fdfd0 EZ |
7666 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7667 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7668 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7669 | so it will be deleted when hit."); | |
5ba2abeb | 7670 | set_cmd_completer (c, location_completer); |
c906108c SS |
7671 | |
7672 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7673 | "Enable some breakpoints.\n\ | |
7674 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7675 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7676 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7677 | With a subcommand you can enable temporarily.", | |
7678 | &enablelist, "enable ", 1, &cmdlist); | |
7679 | if (xdb_commands) | |
c5aa993b JM |
7680 | add_com ("ab", class_breakpoint, enable_command, |
7681 | "Enable some breakpoints.\n\ | |
c906108c SS |
7682 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7683 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7684 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7685 | With a subcommand you can enable temporarily."); | |
7686 | ||
7687 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7688 | ||
7689 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7690 | "Enable some breakpoints.\n\ |
c906108c SS |
7691 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7692 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7693 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7694 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7695 | |
7696 | add_cmd ("once", no_class, enable_once_command, | |
7697 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7698 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7699 | &enablebreaklist); | |
7700 | ||
7701 | add_cmd ("delete", no_class, enable_delete_command, | |
7702 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7703 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7704 | &enablebreaklist); | |
7705 | ||
7706 | add_cmd ("delete", no_class, enable_delete_command, | |
7707 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7708 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7709 | &enablelist); | |
7710 | ||
7711 | add_cmd ("once", no_class, enable_once_command, | |
7712 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7713 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7714 | &enablelist); | |
7715 | ||
7716 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7717 | "Disable some breakpoints.\n\ |
c906108c SS |
7718 | Arguments are breakpoint numbers with spaces in between.\n\ |
7719 | To disable all breakpoints, give no argument.\n\ | |
7720 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7721 | &disablelist, "disable ", 1, &cmdlist); | |
7722 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7723 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7724 | if (xdb_commands) | |
c5aa993b JM |
7725 | add_com ("sb", class_breakpoint, disable_command, |
7726 | "Disable some breakpoints.\n\ | |
c906108c SS |
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."); | |
7730 | ||
7731 | add_cmd ("breakpoints", class_alias, disable_command, | |
7732 | "Disable some breakpoints.\n\ | |
7733 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7734 | To disable all breakpoints, give no argument.\n\ | |
7735 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7736 | This command may be abbreviated \"disable\".", | |
7737 | &disablelist); | |
7738 | ||
7739 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7740 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7741 | Arguments are breakpoint numbers with spaces in between.\n\ |
7742 | To delete all breakpoints, give no argument.\n\ | |
7743 | \n\ | |
7744 | Also a prefix command for deletion of other GDB objects.\n\ | |
7745 | The \"unset\" command is also an alias for \"delete\".", | |
7746 | &deletelist, "delete ", 1, &cmdlist); | |
7747 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7748 | if (xdb_commands) | |
7749 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7750 | "Delete some breakpoints.\n\ |
c906108c SS |
7751 | Arguments are breakpoint numbers with spaces in between.\n\ |
7752 | To delete all breakpoints, give no argument.\n"); | |
7753 | ||
7754 | add_cmd ("breakpoints", class_alias, delete_command, | |
7755 | "Delete some breakpoints or auto-display expressions.\n\ | |
7756 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7757 | To delete all breakpoints, give no argument.\n\ | |
7758 | This command may be abbreviated \"delete\".", | |
7759 | &deletelist); | |
7760 | ||
7761 | add_com ("clear", class_breakpoint, clear_command, | |
7762 | concat ("Clear breakpoint at specified line or function.\n\ | |
7763 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7764 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7765 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7766 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7767 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7768 | is executing in.\n\ |
7769 | \n\ | |
7770 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7771 | ||
c94fdfd0 EZ |
7772 | c = add_com ("break", class_breakpoint, break_command, |
7773 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7774 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7775 | If line number is specified, break at start of code for that line.\n\ | |
7776 | If function is specified, break at start of code for that function.\n\ | |
7777 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7778 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7779 | This is useful for breaking on return to a stack frame.\n\ |
7780 | \n\ | |
7781 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7782 | \n\ | |
7783 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7784 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7785 | |
c906108c SS |
7786 | add_com_alias ("b", "break", class_run, 1); |
7787 | add_com_alias ("br", "break", class_run, 1); | |
7788 | add_com_alias ("bre", "break", class_run, 1); | |
7789 | add_com_alias ("brea", "break", class_run, 1); | |
7790 | ||
502fd408 | 7791 | if (xdb_commands) |
c906108c SS |
7792 | { |
7793 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7794 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7795 | } |
7796 | ||
7797 | if (dbx_commands) | |
7798 | { | |
c5aa993b JM |
7799 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7800 | "Break in function/address or break at a line in the current file.", | |
7801 | &stoplist, "stop ", 1, &cmdlist); | |
7802 | add_cmd ("in", class_breakpoint, stopin_command, | |
7803 | "Break in function or address.\n", &stoplist); | |
7804 | add_cmd ("at", class_breakpoint, stopat_command, | |
7805 | "Break at a line in the current file.\n", &stoplist); | |
7806 | add_com ("status", class_info, breakpoints_info, | |
7807 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7808 | The \"Type\" column indicates one of:\n\ |
7809 | \tbreakpoint - normal breakpoint\n\ | |
7810 | \twatchpoint - watchpoint\n\ | |
7811 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7812 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7813 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7814 | address and file/line number respectively.\n\n", | |
c5aa993b | 7815 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7816 | are set to the address of the last breakpoint listed.\n\n\ |
7817 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7818 | breakpoint set.", NULL)); | |
7819 | } | |
7820 | ||
7821 | add_info ("breakpoints", breakpoints_info, | |
7822 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7823 | The \"Type\" column indicates one of:\n\ | |
7824 | \tbreakpoint - normal breakpoint\n\ | |
7825 | \twatchpoint - watchpoint\n\ | |
7826 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7827 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7828 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7829 | address and file/line number respectively.\n\n", | |
c5aa993b | 7830 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7831 | are set to the address of the last breakpoint listed.\n\n\ |
7832 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7833 | breakpoint set.", NULL)); | |
7834 | ||
7835 | if (xdb_commands) | |
c5aa993b JM |
7836 | add_com ("lb", class_breakpoint, breakpoints_info, |
7837 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7838 | The \"Type\" column indicates one of:\n\ |
7839 | \tbreakpoint - normal breakpoint\n\ | |
7840 | \twatchpoint - watchpoint\n\ | |
7841 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7842 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7843 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7844 | address and file/line number respectively.\n\n", | |
c5aa993b | 7845 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7846 | are set to the address of the last breakpoint listed.\n\n\ |
7847 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7848 | breakpoint set.", NULL)); | |
7849 | ||
c906108c | 7850 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7851 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7852 | The \"Type\" column indicates one of:\n\ |
7853 | \tbreakpoint - normal breakpoint\n\ | |
7854 | \twatchpoint - watchpoint\n\ | |
7855 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7856 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7857 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7858 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7859 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7860 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7861 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7862 | address and file/line number respectively.\n\n", | |
c5aa993b | 7863 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7864 | are set to the address of the last breakpoint listed.\n\n\ |
7865 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7866 | breakpoint set.", NULL), | |
7867 | &maintenanceinfolist); | |
7868 | ||
c906108c | 7869 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7870 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7871 | Raised signals may be caught:\n\ |
7872 | \tcatch signal - all signals\n\ | |
7873 | \tcatch signal <signame> - a particular signal\n\ | |
7874 | Raised exceptions may be caught:\n\ | |
7875 | \tcatch throw - all exceptions, when thrown\n\ | |
7876 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7877 | \tcatch catch - all exceptions, when caught\n\ | |
7878 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7879 | Thread or process events may be caught:\n\ | |
7880 | \tcatch thread_start - any threads, just after creation\n\ | |
7881 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7882 | \tcatch thread_join - any threads, just after joins\n\ | |
7883 | Process events may be caught:\n\ | |
7884 | \tcatch start - any processes, just after creation\n\ | |
7885 | \tcatch exit - any processes, just before expiration\n\ | |
7886 | \tcatch fork - calls to fork()\n\ | |
7887 | \tcatch vfork - calls to vfork()\n\ | |
7888 | \tcatch exec - calls to exec()\n\ | |
7889 | Dynamically-linked library events may be caught:\n\ | |
7890 | \tcatch load - loads of any library\n\ | |
7891 | \tcatch load <libname> - loads of a particular library\n\ | |
7892 | \tcatch unload - unloads of any library\n\ | |
7893 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7894 | The act of your program's execution stopping may also be caught:\n\ | |
7895 | \tcatch stop\n\n\ | |
7896 | C++ exceptions may be caught:\n\ | |
7897 | \tcatch throw - all exceptions, when thrown\n\ | |
7898 | \tcatch catch - all exceptions, when caught\n\ | |
7899 | \n\ | |
7900 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7901 | after a fork or vfork is caught.\n\n\ | |
7902 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7903 | |
c906108c | 7904 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7905 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7906 | Args like \"catch\" command.\n\ |
7907 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7908 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7909 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 7910 | |
c94fdfd0 EZ |
7911 | c = add_com ("watch", class_breakpoint, watch_command, |
7912 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7913 | A watchpoint stops execution of your program whenever the value of\n\ |
7914 | an expression changes."); | |
5ba2abeb | 7915 | set_cmd_completer (c, location_completer); |
c906108c | 7916 | |
c94fdfd0 EZ |
7917 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
7918 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
7919 | A watchpoint stops execution of your program whenever the value of\n\ |
7920 | an expression is read."); | |
5ba2abeb | 7921 | set_cmd_completer (c, location_completer); |
c906108c | 7922 | |
c94fdfd0 EZ |
7923 | c = add_com ("awatch", class_breakpoint, awatch_command, |
7924 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7925 | A watchpoint stops execution of your program whenever the value of\n\ |
7926 | an expression is either read or written."); | |
5ba2abeb | 7927 | set_cmd_completer (c, location_completer); |
c906108c SS |
7928 | |
7929 | add_info ("watchpoints", breakpoints_info, | |
7930 | "Synonym for ``info breakpoints''."); | |
7931 | ||
7932 | ||
7933 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7934 | (char *) &can_use_hw_watchpoints, |
7935 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7936 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7937 | such is available. (However, any hardware watchpoints that were\n\ | |
7938 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7939 | hardware.)", | |
c5aa993b | 7940 | &setlist); |
cb1a6d5f | 7941 | deprecated_add_show_from_set (c, &showlist); |
c906108c SS |
7942 | |
7943 | can_use_hw_watchpoints = 1; | |
fa8d40ab JJ |
7944 | |
7945 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, "\ | |
7946 | Breakpoint specific settings\n\ | |
7947 | Configure various breakpoint-specific variables such as\n\ | |
7948 | pending breakpoint behavior", | |
7949 | &breakpoint_set_cmdlist, "set breakpoint ", | |
7950 | 0/*allow-unknown*/, &setlist); | |
7951 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, "\ | |
7952 | Breakpoint specific settings\n\ | |
7953 | Configure various breakpoint-specific variables such as\n\ | |
7954 | pending breakpoint behavior", | |
7955 | &breakpoint_show_cmdlist, "show breakpoint ", | |
7956 | 0/*allow-unknown*/, &showlist); | |
7957 | ||
6e1d7d6c | 7958 | add_setshow_auto_boolean_cmd ("pending", no_class, &pending_break_support, "\ |
3b64bf98 AC |
7959 | Set debugger's behavior regarding pending breakpoints.", "\ |
7960 | Show debugger's behavior regarding pending breakpoints.", "\ | |
6e1d7d6c AC |
7961 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
7962 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
7963 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
3b64bf98 AC |
7964 | user-query to see if a pending breakpoint should be created.", "\ |
7965 | Debugger's behavior regarding pending breakpoints is %s.", | |
6e1d7d6c AC |
7966 | NULL, NULL, |
7967 | &breakpoint_set_cmdlist, | |
7968 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
7969 | |
7970 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
c906108c | 7971 | } |