Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
e74f0f02 DJ |
4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
5 | Free Software Foundation, Inc. | |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include <ctype.h> | |
26 | #include "symtab.h" | |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "expression.h" | |
31 | #include "gdbcore.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "value.h" | |
34 | #include "command.h" | |
35 | #include "inferior.h" | |
36 | #include "gdbthread.h" | |
37 | #include "target.h" | |
38 | #include "language.h" | |
39 | #include "gdb_string.h" | |
40 | #include "demangle.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
c906108c | 52 | |
104c1213 JM |
53 | #include "gdb-events.h" |
54 | ||
c906108c SS |
55 | /* Prototypes for local functions. */ |
56 | ||
c2c6d25f JM |
57 | static void until_break_command_continuation (struct continuation_arg *arg); |
58 | ||
a14ed312 | 59 | static void catch_command_1 (char *, int, int); |
c906108c | 60 | |
a14ed312 | 61 | static void enable_delete_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 64 | |
a14ed312 | 65 | static void enable_once_command (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 68 | |
a14ed312 | 69 | static void disable_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void enable_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 74 | |
a14ed312 | 75 | static void ignore_command (char *, int); |
c906108c | 76 | |
4efb68b1 | 77 | static int breakpoint_re_set_one (void *); |
c906108c | 78 | |
a14ed312 | 79 | static void clear_command (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void catch_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void watch_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 86 | |
e5d66720 PS |
87 | extern void break_at_finish_command (char *, int); |
88 | extern void break_at_finish_at_depth_command (char *, int); | |
7a292a7a | 89 | |
e5d66720 | 90 | extern void tbreak_at_finish_command (char *, int); |
7a292a7a | 91 | |
0101ce28 | 92 | static int break_command_1 (char *, int, int, struct breakpoint *); |
c906108c | 93 | |
a14ed312 | 94 | static void mention (struct breakpoint *); |
c906108c | 95 | |
4d28f7a8 | 96 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 97 | |
9f60f21b | 98 | static void check_duplicates (struct breakpoint *); |
c906108c | 99 | |
76897487 KB |
100 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
101 | ||
88f7da05 KB |
102 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
103 | enum bptype bptype); | |
76897487 | 104 | |
a14ed312 | 105 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 106 | |
a14ed312 | 107 | static void breakpoints_info (char *, int); |
c906108c | 108 | |
a14ed312 | 109 | static void breakpoint_1 (int, int); |
c906108c | 110 | |
a14ed312 | 111 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 112 | |
4efb68b1 | 113 | static int breakpoint_cond_eval (void *); |
c906108c | 114 | |
4efb68b1 | 115 | static void cleanup_executing_breakpoints (void *); |
c906108c | 116 | |
a14ed312 | 117 | static void commands_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | static void condition_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | static int get_number_trailer (char **, int); |
c906108c | 122 | |
0101ce28 JJ |
123 | static int do_captured_parse_breakpoint (struct ui_out *, void *); |
124 | ||
a14ed312 | 125 | void set_breakpoint_count (int); |
c906108c | 126 | |
c5aa993b JM |
127 | typedef enum |
128 | { | |
129 | mark_inserted, | |
130 | mark_uninserted | |
131 | } | |
132 | insertion_state_t; | |
c906108c | 133 | |
0bde7532 | 134 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 135 | |
a14ed312 | 136 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
137 | |
138 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 139 | |
c5aa993b JM |
140 | typedef struct |
141 | { | |
142 | enum exception_event_kind kind; | |
b5de0fa7 | 143 | int enable_p; |
c5aa993b JM |
144 | } |
145 | args_for_catchpoint_enable; | |
c906108c | 146 | |
4efb68b1 | 147 | static int watchpoint_check (void *); |
c906108c | 148 | |
4efb68b1 | 149 | static int cover_target_enable_exception_callback (void *); |
c906108c | 150 | |
a14ed312 | 151 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 152 | |
a14ed312 | 153 | static void create_longjmp_breakpoint (char *); |
c906108c | 154 | |
1900040c MS |
155 | static void create_overlay_event_breakpoint (char *); |
156 | ||
a14ed312 | 157 | static int hw_breakpoint_used_count (void); |
c906108c | 158 | |
a14ed312 | 159 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 160 | |
a14ed312 | 161 | static void hbreak_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void thbreak_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void watch_command_1 (char *, int, int); |
c906108c | 166 | |
a14ed312 | 167 | static void rwatch_command (char *, int); |
c906108c | 168 | |
a14ed312 | 169 | static void awatch_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 172 | |
a14ed312 KB |
173 | static void solib_load_unload_1 (char *hookname, |
174 | int tempflag, | |
175 | char *dll_pathname, | |
176 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 177 | |
a14ed312 KB |
178 | static void create_fork_vfork_event_catchpoint (int tempflag, |
179 | char *cond_string, | |
180 | enum bptype bp_kind); | |
7a292a7a | 181 | |
a14ed312 KB |
182 | static void break_at_finish_at_depth_command_1 (char *arg, |
183 | int flag, int from_tty); | |
7a292a7a | 184 | |
a14ed312 | 185 | static void break_at_finish_command_1 (char *arg, int flag, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 188 | |
a14ed312 | 189 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 190 | |
a14ed312 | 191 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 192 | |
a14ed312 | 193 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 194 | |
a14ed312 | 195 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 196 | |
a14ed312 | 197 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 198 | |
d85310f7 MS |
199 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
200 | enum exception_event_kind ex_event, | |
201 | struct symtab_and_line *sal); | |
7a292a7a | 202 | |
d85310f7 MS |
203 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
204 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 205 | |
a14ed312 | 206 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 207 | |
a14ed312 | 208 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 209 | |
c906108c SS |
210 | /* Prototypes for exported functions. */ |
211 | ||
c906108c SS |
212 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
213 | if such is available. */ | |
214 | static int can_use_hw_watchpoints; | |
215 | ||
fa8d40ab JJ |
216 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
217 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
218 | for unrecognized breakpoint locations. | |
219 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
220 | static enum auto_boolean pending_break_support; | |
221 | ||
a14ed312 | 222 | void _initialize_breakpoint (void); |
c906108c | 223 | |
c5aa993b | 224 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 225 | |
c906108c SS |
226 | /* Are we executing breakpoint commands? */ |
227 | static int executing_breakpoint_commands; | |
228 | ||
c02f5703 MS |
229 | /* Are overlay event breakpoints enabled? */ |
230 | static int overlay_events_enabled; | |
231 | ||
c906108c SS |
232 | /* Walk the following statement or block through all breakpoints. |
233 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
234 | breakpoint. */ | |
235 | ||
5c44784c | 236 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 237 | |
5c44784c JM |
238 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
239 | for (B = breakpoint_chain; \ | |
240 | B ? (TMP=B->next, 1): 0; \ | |
241 | B = TMP) | |
c906108c | 242 | |
7cc221ef DJ |
243 | /* Similar iterators for the low-level breakpoints. */ |
244 | ||
245 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
246 | ||
247 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
248 | for (B = bp_location_chain; \ | |
249 | B ? (TMP=B->next, 1): 0; \ | |
250 | B = TMP) | |
251 | ||
c906108c SS |
252 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
253 | ||
254 | int show_breakpoint_hit_counts = 1; | |
255 | ||
7cc221ef | 256 | /* Chains of all breakpoints defined. */ |
c906108c SS |
257 | |
258 | struct breakpoint *breakpoint_chain; | |
259 | ||
7cc221ef DJ |
260 | struct bp_location *bp_location_chain; |
261 | ||
c906108c SS |
262 | /* Number of last breakpoint made. */ |
263 | ||
264 | int breakpoint_count; | |
265 | ||
c5aa993b JM |
266 | /* Pointer to current exception event record */ |
267 | static struct exception_event_record *current_exception_event; | |
c906108c | 268 | |
f83f82bc AC |
269 | /* Indicator of whether exception catchpoints should be nuked between |
270 | runs of a program. */ | |
271 | int deprecated_exception_catchpoints_are_fragile = 0; | |
c5aa993b | 272 | |
c906108c | 273 | /* Indicator of when exception catchpoints set-up should be |
f83f82bc AC |
274 | reinitialized -- e.g. when program is re-run. */ |
275 | int deprecated_exception_support_initialized = 0; | |
c906108c SS |
276 | |
277 | /* This function returns a pointer to the string representation of the | |
278 | pathname of the dynamically-linked library that has just been | |
279 | loaded. | |
280 | ||
281 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
282 | or undefined results are guaranteed. | |
283 | ||
284 | This string's contents are only valid immediately after the | |
285 | inferior has stopped in the dynamic linker hook, and becomes | |
286 | invalid as soon as the inferior is continued. Clients should make | |
287 | a copy of this string if they wish to continue the inferior and | |
288 | then access the string. */ | |
289 | ||
290 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
291 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
292 | #endif | |
293 | ||
294 | /* This function returns a pointer to the string representation of the | |
295 | pathname of the dynamically-linked library that has just been | |
296 | unloaded. | |
297 | ||
298 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
299 | TRUE, or undefined results are guaranteed. | |
300 | ||
301 | This string's contents are only valid immediately after the | |
302 | inferior has stopped in the dynamic linker hook, and becomes | |
303 | invalid as soon as the inferior is continued. Clients should make | |
304 | a copy of this string if they wish to continue the inferior and | |
305 | then access the string. */ | |
306 | ||
307 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
308 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
309 | #endif | |
310 | ||
311 | /* This function is called by the "catch load" command. It allows the | |
312 | debugger to be notified by the dynamic linker when a specified | |
313 | library file (or any library file, if filename is NULL) is loaded. */ | |
314 | ||
315 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
316 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
317 | error ("catch of library loads not yet implemented on this platform") | |
318 | #endif | |
319 | ||
320 | /* This function is called by the "catch unload" command. It allows | |
321 | the debugger to be notified by the dynamic linker when a specified | |
322 | library file (or any library file, if filename is NULL) is | |
323 | unloaded. */ | |
324 | ||
325 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
326 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
327 | error ("catch of library unloads not yet implemented on this platform") | |
328 | #endif | |
329 | ||
468d015d JJ |
330 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
331 | static int | |
332 | breakpoint_enabled (struct breakpoint *b) | |
333 | { | |
0101ce28 | 334 | return (b->enable_state == bp_enabled && !b->pending); |
468d015d JJ |
335 | } |
336 | ||
c906108c SS |
337 | /* Set breakpoint count to NUM. */ |
338 | ||
339 | void | |
fba45db2 | 340 | set_breakpoint_count (int num) |
c906108c SS |
341 | { |
342 | breakpoint_count = num; | |
343 | set_internalvar (lookup_internalvar ("bpnum"), | |
344 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
345 | } | |
346 | ||
347 | /* Used in run_command to zero the hit count when a new run starts. */ | |
348 | ||
349 | void | |
fba45db2 | 350 | clear_breakpoint_hit_counts (void) |
c906108c SS |
351 | { |
352 | struct breakpoint *b; | |
353 | ||
354 | ALL_BREAKPOINTS (b) | |
355 | b->hit_count = 0; | |
356 | } | |
357 | ||
358 | /* Default address, symtab and line to put a breakpoint at | |
359 | for "break" command with no arg. | |
360 | if default_breakpoint_valid is zero, the other three are | |
361 | not valid, and "break" with no arg is an error. | |
362 | ||
363 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
364 | ||
365 | int default_breakpoint_valid; | |
366 | CORE_ADDR default_breakpoint_address; | |
367 | struct symtab *default_breakpoint_symtab; | |
368 | int default_breakpoint_line; | |
369 | \f | |
370 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
371 | Advance *PP after the string and any trailing whitespace. | |
372 | ||
373 | Currently the string can either be a number or "$" followed by the name | |
374 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
375 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
376 | ||
377 | TRAILER is a character which can be found after the number; most | |
378 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 379 | static int |
fba45db2 | 380 | get_number_trailer (char **pp, int trailer) |
c906108c | 381 | { |
5c44784c | 382 | int retval = 0; /* default */ |
c906108c SS |
383 | char *p = *pp; |
384 | ||
385 | if (p == NULL) | |
386 | /* Empty line means refer to the last breakpoint. */ | |
387 | return breakpoint_count; | |
388 | else if (*p == '$') | |
389 | { | |
390 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 391 | to pass to lookup_internalvar(). */ |
c906108c SS |
392 | char *varname; |
393 | char *start = ++p; | |
278cd55f | 394 | struct value *val; |
c906108c SS |
395 | |
396 | while (isalnum (*p) || *p == '_') | |
397 | p++; | |
398 | varname = (char *) alloca (p - start + 1); | |
399 | strncpy (varname, start, p - start); | |
400 | varname[p - start] = '\0'; | |
401 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
402 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
403 | retval = (int) value_as_long (val); | |
404 | else | |
405 | { | |
406 | printf_filtered ("Convenience variable must have integer value.\n"); | |
407 | retval = 0; | |
408 | } | |
c906108c SS |
409 | } |
410 | else | |
411 | { | |
412 | if (*p == '-') | |
413 | ++p; | |
414 | while (*p >= '0' && *p <= '9') | |
415 | ++p; | |
416 | if (p == *pp) | |
417 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
418 | { |
419 | /* Skip non-numeric token */ | |
420 | while (*p && !isspace((int) *p)) | |
421 | ++p; | |
422 | /* Return zero, which caller must interpret as error. */ | |
423 | retval = 0; | |
424 | } | |
425 | else | |
426 | retval = atoi (*pp); | |
427 | } | |
428 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
429 | { | |
430 | /* Trailing junk: return 0 and let caller print error msg. */ | |
431 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
432 | ++p; | |
433 | retval = 0; | |
c906108c | 434 | } |
c906108c SS |
435 | while (isspace (*p)) |
436 | p++; | |
437 | *pp = p; | |
438 | return retval; | |
439 | } | |
5c44784c | 440 | |
11cf8741 | 441 | |
5c44784c JM |
442 | /* Like get_number_trailer, but don't allow a trailer. */ |
443 | int | |
fba45db2 | 444 | get_number (char **pp) |
5c44784c JM |
445 | { |
446 | return get_number_trailer (pp, '\0'); | |
447 | } | |
448 | ||
449 | /* Parse a number or a range. | |
450 | * A number will be of the form handled by get_number. | |
451 | * A range will be of the form <number1> - <number2>, and | |
452 | * will represent all the integers between number1 and number2, | |
453 | * inclusive. | |
454 | * | |
455 | * While processing a range, this fuction is called iteratively; | |
456 | * At each call it will return the next value in the range. | |
457 | * | |
458 | * At the beginning of parsing a range, the char pointer PP will | |
459 | * be advanced past <number1> and left pointing at the '-' token. | |
460 | * Subsequent calls will not advance the pointer until the range | |
461 | * is completed. The call that completes the range will advance | |
462 | * pointer PP past <number2>. | |
463 | */ | |
464 | ||
465 | int | |
fba45db2 | 466 | get_number_or_range (char **pp) |
5c44784c JM |
467 | { |
468 | static int last_retval, end_value; | |
469 | static char *end_ptr; | |
470 | static int in_range = 0; | |
471 | ||
472 | if (**pp != '-') | |
473 | { | |
474 | /* Default case: pp is pointing either to a solo number, | |
475 | or to the first number of a range. */ | |
476 | last_retval = get_number_trailer (pp, '-'); | |
477 | if (**pp == '-') | |
478 | { | |
479 | char **temp; | |
480 | ||
481 | /* This is the start of a range (<number1> - <number2>). | |
482 | Skip the '-', parse and remember the second number, | |
483 | and also remember the end of the final token. */ | |
484 | ||
485 | temp = &end_ptr; | |
486 | end_ptr = *pp + 1; | |
487 | while (isspace ((int) *end_ptr)) | |
488 | end_ptr++; /* skip white space */ | |
489 | end_value = get_number (temp); | |
490 | if (end_value < last_retval) | |
491 | { | |
492 | error ("inverted range"); | |
493 | } | |
494 | else if (end_value == last_retval) | |
495 | { | |
496 | /* degenerate range (number1 == number2). Advance the | |
497 | token pointer so that the range will be treated as a | |
498 | single number. */ | |
499 | *pp = end_ptr; | |
500 | } | |
501 | else | |
502 | in_range = 1; | |
503 | } | |
504 | } | |
505 | else if (! in_range) | |
506 | error ("negative value"); | |
507 | else | |
508 | { | |
509 | /* pp points to the '-' that betokens a range. All | |
510 | number-parsing has already been done. Return the next | |
511 | integer value (one greater than the saved previous value). | |
512 | Do not advance the token pointer 'pp' until the end of range | |
513 | is reached. */ | |
514 | ||
515 | if (++last_retval == end_value) | |
516 | { | |
517 | /* End of range reached; advance token pointer. */ | |
518 | *pp = end_ptr; | |
519 | in_range = 0; | |
520 | } | |
521 | } | |
522 | return last_retval; | |
523 | } | |
524 | ||
525 | ||
c906108c SS |
526 | \f |
527 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
528 | ||
529 | static void | |
fba45db2 | 530 | condition_command (char *arg, int from_tty) |
c906108c | 531 | { |
52f0bd74 | 532 | struct breakpoint *b; |
c906108c | 533 | char *p; |
52f0bd74 | 534 | int bnum; |
c906108c SS |
535 | |
536 | if (arg == 0) | |
537 | error_no_arg ("breakpoint number"); | |
538 | ||
539 | p = arg; | |
540 | bnum = get_number (&p); | |
5c44784c JM |
541 | if (bnum == 0) |
542 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
543 | |
544 | ALL_BREAKPOINTS (b) | |
545 | if (b->number == bnum) | |
c5aa993b JM |
546 | { |
547 | if (b->cond) | |
548 | { | |
b8c9b27d | 549 | xfree (b->cond); |
c5aa993b JM |
550 | b->cond = 0; |
551 | } | |
552 | if (b->cond_string != NULL) | |
b8c9b27d | 553 | xfree (b->cond_string); |
c906108c | 554 | |
c5aa993b JM |
555 | if (*p == 0) |
556 | { | |
557 | b->cond = 0; | |
558 | b->cond_string = NULL; | |
559 | if (from_tty) | |
560 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
561 | } | |
562 | else | |
563 | { | |
564 | arg = p; | |
565 | /* I don't know if it matters whether this is the string the user | |
566 | typed in or the decompiled expression. */ | |
567 | b->cond_string = savestring (arg, strlen (arg)); | |
0101ce28 JJ |
568 | if (!b->pending) |
569 | { | |
570 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
571 | if (*arg) | |
572 | error ("Junk at end of expression"); | |
573 | } | |
c5aa993b JM |
574 | } |
575 | breakpoints_changed (); | |
221ea385 | 576 | breakpoint_modify_event (b->number); |
c5aa993b JM |
577 | return; |
578 | } | |
c906108c SS |
579 | |
580 | error ("No breakpoint number %d.", bnum); | |
581 | } | |
582 | ||
c906108c | 583 | static void |
fba45db2 | 584 | commands_command (char *arg, int from_tty) |
c906108c | 585 | { |
52f0bd74 | 586 | struct breakpoint *b; |
c906108c | 587 | char *p; |
52f0bd74 | 588 | int bnum; |
c906108c SS |
589 | struct command_line *l; |
590 | ||
591 | /* If we allowed this, we would have problems with when to | |
592 | free the storage, if we change the commands currently | |
593 | being read from. */ | |
594 | ||
595 | if (executing_breakpoint_commands) | |
596 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
597 | ||
598 | p = arg; | |
599 | bnum = get_number (&p); | |
5c44784c | 600 | |
c906108c SS |
601 | if (p && *p) |
602 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 603 | |
c906108c SS |
604 | ALL_BREAKPOINTS (b) |
605 | if (b->number == bnum) | |
9ebf4acf AC |
606 | { |
607 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
608 | bnum); | |
609 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
610 | l = read_command_lines (tmpbuf, from_tty); | |
611 | do_cleanups (cleanups); | |
612 | free_command_lines (&b->commands); | |
613 | b->commands = l; | |
614 | breakpoints_changed (); | |
615 | breakpoint_modify_event (b->number); | |
616 | return; | |
c5aa993b | 617 | } |
c906108c SS |
618 | error ("No breakpoint number %d.", bnum); |
619 | } | |
620 | \f | |
621 | /* Like target_read_memory() but if breakpoints are inserted, return | |
622 | the shadow contents instead of the breakpoints themselves. | |
623 | ||
624 | Read "memory data" from whatever target or inferior we have. | |
625 | Returns zero if successful, errno value if not. EIO is used | |
626 | for address out of bounds. If breakpoints are inserted, returns | |
627 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
628 | ||
629 | int | |
fba45db2 | 630 | read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
631 | { |
632 | int status; | |
ffce0d52 | 633 | struct bp_location *b; |
c906108c SS |
634 | CORE_ADDR bp_addr = 0; |
635 | int bp_size = 0; | |
636 | ||
637 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
638 | /* No breakpoints on this machine. */ | |
639 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 640 | |
ffce0d52 | 641 | ALL_BP_LOCATIONS (b) |
c5aa993b | 642 | { |
ffce0d52 DJ |
643 | if (b->owner->type == bp_none) |
644 | warning ("reading through apparently deleted breakpoint #%d?", | |
645 | b->owner->number); | |
646 | ||
647 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 648 | continue; |
ffce0d52 | 649 | if (!b->inserted) |
c5aa993b JM |
650 | continue; |
651 | /* Addresses and length of the part of the breakpoint that | |
652 | we need to copy. */ | |
653 | /* XXXX The m68k, sh and h8300 have different local and remote | |
654 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
655 | correctly determine the breakpoints memory address and size | |
656 | for these targets. */ | |
ffce0d52 | 657 | bp_addr = b->address; |
c5aa993b JM |
658 | bp_size = 0; |
659 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
660 | continue; | |
661 | if (bp_size == 0) | |
662 | /* bp isn't valid */ | |
663 | continue; | |
664 | if (bp_addr + bp_size <= memaddr) | |
665 | /* The breakpoint is entirely before the chunk of memory we | |
666 | are reading. */ | |
667 | continue; | |
668 | if (bp_addr >= memaddr + len) | |
669 | /* The breakpoint is entirely after the chunk of memory we are | |
670 | reading. */ | |
671 | continue; | |
672 | /* Copy the breakpoint from the shadow contents, and recurse for | |
673 | the things before and after. */ | |
c906108c | 674 | { |
c5aa993b JM |
675 | /* Offset within shadow_contents. */ |
676 | int bptoffset = 0; | |
c906108c | 677 | |
c5aa993b JM |
678 | if (bp_addr < memaddr) |
679 | { | |
680 | /* Only copy the second part of the breakpoint. */ | |
681 | bp_size -= memaddr - bp_addr; | |
682 | bptoffset = memaddr - bp_addr; | |
683 | bp_addr = memaddr; | |
684 | } | |
685 | ||
686 | if (bp_addr + bp_size > memaddr + len) | |
687 | { | |
688 | /* Only copy the first part of the breakpoint. */ | |
689 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
690 | } | |
691 | ||
692 | memcpy (myaddr + bp_addr - memaddr, | |
ffce0d52 | 693 | b->shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
694 | |
695 | if (bp_addr > memaddr) | |
696 | { | |
697 | /* Copy the section of memory before the breakpoint. */ | |
698 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
699 | if (status != 0) | |
700 | return status; | |
701 | } | |
702 | ||
703 | if (bp_addr + bp_size < memaddr + len) | |
704 | { | |
705 | /* Copy the section of memory after the breakpoint. */ | |
d85310f7 MS |
706 | status = read_memory_nobpt (bp_addr + bp_size, |
707 | myaddr + bp_addr + bp_size - memaddr, | |
708 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
709 | if (status != 0) |
710 | return status; | |
711 | } | |
712 | return 0; | |
c906108c | 713 | } |
c5aa993b | 714 | } |
c906108c SS |
715 | /* Nothing overlaps. Just call read_memory_noerr. */ |
716 | return target_read_memory (memaddr, myaddr, len); | |
717 | } | |
c906108c | 718 | \f |
c5aa993b | 719 | |
687595f9 | 720 | /* A wrapper function for inserting catchpoints. */ |
3f8091c1 | 721 | static int |
687595f9 DJ |
722 | insert_catchpoint (struct ui_out *uo, void *args) |
723 | { | |
724 | struct breakpoint *b = (struct breakpoint *) args; | |
725 | int val = -1; | |
726 | ||
727 | switch (b->type) | |
728 | { | |
729 | case bp_catch_fork: | |
730 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
731 | break; | |
732 | case bp_catch_vfork: | |
733 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
734 | break; | |
735 | case bp_catch_exec: | |
736 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); | |
737 | break; | |
738 | default: | |
1171114a | 739 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); |
687595f9 DJ |
740 | break; |
741 | } | |
742 | ||
743 | if (val < 0) | |
744 | throw_exception (RETURN_ERROR); | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
7270d8f2 OF |
749 | /* Helper routine: free the value chain for a breakpoint (watchpoint). */ |
750 | ||
751 | static void free_valchain (struct bp_location *b) | |
752 | { | |
753 | struct value *v; | |
754 | struct value *n; | |
755 | ||
756 | /* Free the saved value chain. We will construct a new one | |
757 | the next time the watchpoint is inserted. */ | |
758 | for (v = b->owner->val_chain; v; v = n) | |
759 | { | |
760 | n = v->next; | |
761 | value_free (v); | |
762 | } | |
763 | b->owner->val_chain = NULL; | |
764 | } | |
765 | ||
879bfdc2 DJ |
766 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
767 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
768 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
769 | ||
770 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
771 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 772 | static int |
879bfdc2 | 773 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
774 | struct ui_file *tmp_error_stream, |
775 | int *disabled_breaks, int *process_warning, | |
776 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
777 | { |
778 | int val = 0; | |
779 | ||
780 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
781 | breakpoints should not be inserted. */ | |
468d015d | 782 | if (!breakpoint_enabled (bpt->owner)) |
879bfdc2 DJ |
783 | return 0; |
784 | ||
785 | if (bpt->inserted || bpt->duplicate) | |
786 | return 0; | |
787 | ||
788 | if (bpt->loc_type == bp_loc_software_breakpoint | |
789 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
790 | { | |
791 | /* First check to see if we have to handle an overlay. */ | |
792 | if (overlay_debugging == ovly_off | |
793 | || bpt->section == NULL | |
794 | || !(section_is_overlay (bpt->section))) | |
795 | { | |
796 | /* No overlay handling: just set the breakpoint. */ | |
797 | ||
798 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
799 | val = target_insert_hw_breakpoint (bpt->address, | |
800 | bpt->shadow_contents); | |
801 | else | |
802 | val = target_insert_breakpoint (bpt->address, | |
803 | bpt->shadow_contents); | |
804 | } | |
805 | else | |
806 | { | |
807 | /* This breakpoint is in an overlay section. | |
808 | Shall we set a breakpoint at the LMA? */ | |
809 | if (!overlay_events_enabled) | |
810 | { | |
811 | /* Yes -- overlay event support is not active, | |
812 | so we must try to set a breakpoint at the LMA. | |
813 | This will not work for a hardware breakpoint. */ | |
814 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
815 | warning ("hardware breakpoint %d not supported in overlay!\n", | |
816 | bpt->owner->number); | |
817 | else | |
818 | { | |
819 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
820 | bpt->section); | |
821 | /* Set a software (trap) breakpoint at the LMA. */ | |
822 | val = target_insert_breakpoint (addr, bpt->shadow_contents); | |
823 | if (val != 0) | |
824 | fprintf_unfiltered (tmp_error_stream, | |
825 | "Overlay breakpoint %d failed: in ROM?", | |
826 | bpt->owner->number); | |
827 | } | |
828 | } | |
829 | /* Shall we set a breakpoint at the VMA? */ | |
830 | if (section_is_mapped (bpt->section)) | |
831 | { | |
832 | /* Yes. This overlay section is mapped into memory. */ | |
833 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
834 | val = target_insert_hw_breakpoint (bpt->address, | |
835 | bpt->shadow_contents); | |
836 | else | |
837 | val = target_insert_breakpoint (bpt->address, | |
838 | bpt->shadow_contents); | |
839 | } | |
840 | else | |
841 | { | |
842 | /* No. This breakpoint will not be inserted. | |
843 | No error, but do not mark the bp as 'inserted'. */ | |
844 | return 0; | |
845 | } | |
846 | } | |
847 | ||
848 | if (val) | |
849 | { | |
850 | /* Can't set the breakpoint. */ | |
851 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
852 | if (DISABLE_UNSETTABLE_BREAK (bpt->address)) | |
853 | { | |
854 | /* See also: disable_breakpoints_in_shlibs. */ | |
855 | val = 0; | |
856 | bpt->owner->enable_state = bp_shlib_disabled; | |
857 | if (!*disabled_breaks) | |
858 | { | |
859 | fprintf_unfiltered (tmp_error_stream, | |
860 | "Cannot insert breakpoint %d.\n", | |
861 | bpt->owner->number); | |
862 | fprintf_unfiltered (tmp_error_stream, | |
863 | "Temporarily disabling shared library breakpoints:\n"); | |
864 | } | |
865 | *disabled_breaks = 1; | |
866 | fprintf_unfiltered (tmp_error_stream, | |
867 | "breakpoint #%d\n", bpt->owner->number); | |
868 | } | |
869 | else | |
870 | #endif | |
871 | { | |
872 | #ifdef ONE_PROCESS_WRITETEXT | |
873 | *process_warning = 1; | |
874 | #endif | |
875 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
876 | { | |
877 | *hw_breakpoint_error = 1; | |
878 | fprintf_unfiltered (tmp_error_stream, | |
879 | "Cannot insert hardware breakpoint %d.\n", | |
880 | bpt->owner->number); | |
881 | } | |
882 | else | |
883 | { | |
884 | fprintf_unfiltered (tmp_error_stream, | |
885 | "Cannot insert breakpoint %d.\n", | |
886 | bpt->owner->number); | |
887 | fprintf_filtered (tmp_error_stream, | |
888 | "Error accessing memory address "); | |
889 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
890 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
891 | safe_strerror (val)); | |
892 | } | |
893 | ||
894 | } | |
895 | } | |
896 | else | |
897 | bpt->inserted = 1; | |
898 | ||
899 | return val; | |
900 | } | |
901 | ||
902 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
903 | /* NOTE drow/2003-09-08: This state only exists for removing | |
904 | watchpoints. It's not clear that it's necessary... */ | |
905 | && bpt->owner->disposition != disp_del_at_next_stop) | |
906 | { | |
907 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
908 | based on the expression. Ideally this should happen at a higher level, | |
909 | and there should be one bp_location for each computed address we | |
910 | must watch. As soon as a many-to-one mapping is available I'll | |
911 | convert this. */ | |
912 | ||
913 | struct frame_info *saved_frame; | |
914 | int saved_level, within_current_scope; | |
915 | struct value *mark = value_mark (); | |
916 | struct value *v; | |
917 | ||
918 | /* Save the current frame and level so we can restore it after | |
919 | evaluating the watchpoint expression on its own frame. */ | |
920 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
921 | took a frame parameter, so that we didn't have to change the | |
922 | selected frame. */ | |
923 | saved_frame = deprecated_selected_frame; | |
924 | saved_level = frame_relative_level (deprecated_selected_frame); | |
925 | ||
926 | /* Determine if the watchpoint is within scope. */ | |
927 | if (bpt->owner->exp_valid_block == NULL) | |
928 | within_current_scope = 1; | |
929 | else | |
930 | { | |
931 | struct frame_info *fi; | |
932 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
933 | within_current_scope = (fi != NULL); | |
934 | if (within_current_scope) | |
935 | select_frame (fi); | |
936 | } | |
937 | ||
938 | if (within_current_scope) | |
939 | { | |
7270d8f2 OF |
940 | free_valchain (bpt); |
941 | ||
879bfdc2 DJ |
942 | /* Evaluate the expression and cut the chain of values |
943 | produced off from the value chain. | |
944 | ||
945 | Make sure the value returned isn't lazy; we use | |
946 | laziness to determine what memory GDB actually needed | |
947 | in order to compute the value of the expression. */ | |
948 | v = evaluate_expression (bpt->owner->exp); | |
949 | VALUE_CONTENTS (v); | |
950 | value_release_to_mark (mark); | |
951 | ||
952 | bpt->owner->val_chain = v; | |
953 | bpt->inserted = 1; | |
954 | ||
955 | /* Look at each value on the value chain. */ | |
956 | for (; v; v = v->next) | |
957 | { | |
958 | /* If it's a memory location, and GDB actually needed | |
959 | its contents to evaluate the expression, then we | |
960 | must watch it. */ | |
961 | if (VALUE_LVAL (v) == lval_memory | |
962 | && ! VALUE_LAZY (v)) | |
963 | { | |
964 | struct type *vtype = check_typedef (VALUE_TYPE (v)); | |
965 | ||
966 | /* We only watch structs and arrays if user asked | |
967 | for it explicitly, never if they just happen to | |
968 | appear in the middle of some value chain. */ | |
969 | if (v == bpt->owner->val_chain | |
970 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
971 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
972 | { | |
973 | CORE_ADDR addr; | |
974 | int len, type; | |
975 | ||
976 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
977 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
978 | type = hw_write; | |
979 | if (bpt->owner->type == bp_read_watchpoint) | |
980 | type = hw_read; | |
981 | else if (bpt->owner->type == bp_access_watchpoint) | |
982 | type = hw_access; | |
983 | ||
984 | val = target_insert_watchpoint (addr, len, type); | |
985 | if (val == -1) | |
986 | { | |
987 | /* Don't exit the loop, try to insert | |
988 | every value on the value chain. That's | |
989 | because we will be removing all the | |
990 | watches below, and removing a | |
991 | watchpoint we didn't insert could have | |
992 | adverse effects. */ | |
993 | bpt->inserted = 0; | |
994 | } | |
995 | val = 0; | |
996 | } | |
997 | } | |
998 | } | |
999 | /* Failure to insert a watchpoint on any memory value in the | |
1000 | value chain brings us here. */ | |
1001 | if (!bpt->inserted) | |
1002 | { | |
0bde7532 | 1003 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
1004 | *hw_breakpoint_error = 1; |
1005 | fprintf_unfiltered (tmp_error_stream, | |
1006 | "Could not insert hardware watchpoint %d.\n", | |
1007 | bpt->owner->number); | |
1008 | val = -1; | |
1009 | } | |
1010 | } | |
1011 | else | |
1012 | { | |
1013 | printf_filtered ("Hardware watchpoint %d deleted ", bpt->owner->number); | |
1014 | printf_filtered ("because the program has left the block \n"); | |
1015 | printf_filtered ("in which its expression is valid.\n"); | |
1016 | if (bpt->owner->related_breakpoint) | |
1017 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
1018 | bpt->owner->disposition = disp_del_at_next_stop; | |
1019 | } | |
1020 | ||
1021 | /* Restore the frame and level. */ | |
1022 | if (saved_frame != deprecated_selected_frame | |
1023 | || saved_level != frame_relative_level (deprecated_selected_frame)) | |
1024 | select_frame (saved_frame); | |
1025 | ||
1026 | return val; | |
1027 | } | |
1028 | ||
1029 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
1030 | { | |
1031 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1032 | breakpoint. Once again, it would be better if this was represented | |
1033 | as two bp_locations. */ | |
1034 | ||
1035 | /* If we get here, we must have a callback mechanism for exception | |
1036 | events -- with g++ style embedded label support, we insert | |
1037 | ordinary breakpoints and not catchpoints. */ | |
1038 | val = target_insert_breakpoint (bpt->address, bpt->shadow_contents); | |
1039 | if (val) | |
1040 | { | |
1041 | /* Couldn't set breakpoint for some reason */ | |
1042 | fprintf_unfiltered (tmp_error_stream, | |
1043 | "Cannot insert catchpoint %d; disabling it.\n", | |
1044 | bpt->owner->number); | |
1045 | fprintf_filtered (tmp_error_stream, | |
1046 | "Error accessing memory address "); | |
1047 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
1048 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
1049 | safe_strerror (val)); | |
1050 | bpt->owner->enable_state = bp_disabled; | |
1051 | } | |
1052 | else | |
1053 | { | |
1054 | /* Bp set, now make sure callbacks are enabled */ | |
1055 | /* Format possible error msg */ | |
1056 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1057 | bpt->owner->number); | |
1058 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1059 | int val; | |
1060 | args_for_catchpoint_enable args; | |
1061 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1062 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1063 | args.enable_p = 1; | |
1064 | val = catch_errors (cover_target_enable_exception_callback, | |
1065 | &args, message, RETURN_MASK_ALL); | |
1066 | do_cleanups (cleanups); | |
1067 | if (val != 0 && val != -1) | |
1068 | bpt->inserted = 1; | |
1069 | ||
1070 | /* Check if something went wrong; val == 0 can be ignored */ | |
1071 | if (val == -1) | |
1072 | { | |
1073 | /* something went wrong */ | |
1074 | fprintf_unfiltered (tmp_error_stream, | |
1075 | "Cannot insert catchpoint %d; disabling it.\n", | |
1076 | bpt->owner->number); | |
1077 | bpt->owner->enable_state = bp_disabled; | |
1078 | } | |
1079 | } | |
1080 | ||
1081 | return val; | |
1082 | } | |
1083 | ||
1084 | else if (bpt->owner->type == bp_catch_fork | |
1085 | || bpt->owner->type == bp_catch_vfork | |
1086 | || bpt->owner->type == bp_catch_exec) | |
1087 | { | |
1088 | char *prefix = xstrprintf ("warning: inserting catchpoint %d: ", | |
1089 | bpt->owner->number); | |
1090 | struct cleanup *cleanups = make_cleanup (xfree, prefix); | |
1091 | val = catch_exceptions (uiout, insert_catchpoint, bpt->owner, prefix, | |
1092 | RETURN_MASK_ERROR); | |
1093 | do_cleanups (cleanups); | |
1094 | if (val < 0) | |
1095 | bpt->owner->enable_state = bp_disabled; | |
1096 | else | |
1097 | bpt->inserted = 1; | |
1640b821 DJ |
1098 | |
1099 | /* We've already printed an error message if there was a problem | |
1100 | inserting this catchpoint, and we've disabled the catchpoint, | |
1101 | so just return success. */ | |
1102 | return 0; | |
879bfdc2 DJ |
1103 | } |
1104 | ||
1105 | return 0; | |
1106 | } | |
1107 | ||
c906108c SS |
1108 | /* insert_breakpoints is used when starting or continuing the program. |
1109 | remove_breakpoints is used when the program stops. | |
1110 | Both return zero if successful, | |
1111 | or an `errno' value if could not write the inferior. */ | |
1112 | ||
1113 | int | |
fba45db2 | 1114 | insert_breakpoints (void) |
c906108c | 1115 | { |
879bfdc2 | 1116 | struct bp_location *b, *temp; |
53a5351d | 1117 | int return_val = 0; /* return success code. */ |
c906108c SS |
1118 | int val = 0; |
1119 | int disabled_breaks = 0; | |
81d0cc19 GS |
1120 | int hw_breakpoint_error = 0; |
1121 | int process_warning = 0; | |
c906108c | 1122 | |
81d0cc19 GS |
1123 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1124 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1125 | ||
1126 | /* Explicitly mark the warning -- this will only be printed if | |
1127 | there was an error. */ | |
1128 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1129 | |
879bfdc2 DJ |
1130 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1131 | { | |
1132 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1133 | breakpoints should not be inserted. */ | |
468d015d | 1134 | if (!breakpoint_enabled (b->owner)) |
879bfdc2 DJ |
1135 | continue; |
1136 | ||
1137 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when | |
1138 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1139 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1140 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1141 | { | |
1142 | struct value *val; | |
1143 | val = evaluate_expression (b->owner->exp); | |
1144 | release_value (val); | |
1145 | if (VALUE_LAZY (val)) | |
1146 | value_fetch_lazy (val); | |
1147 | b->owner->val = val; | |
1148 | } | |
a881cf8e | 1149 | |
879bfdc2 DJ |
1150 | val = insert_bp_location (b, tmp_error_stream, |
1151 | &disabled_breaks, &process_warning, | |
1152 | &hw_breakpoint_error); | |
1153 | if (val) | |
1154 | return_val = val; | |
1155 | } | |
c906108c | 1156 | |
879bfdc2 | 1157 | if (return_val) |
81d0cc19 GS |
1158 | { |
1159 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1160 | message about possibly exhausted resources. */ | |
879bfdc2 | 1161 | if (hw_breakpoint_error) |
81d0cc19 | 1162 | { |
c6510018 MS |
1163 | fprintf_unfiltered (tmp_error_stream, |
1164 | "Could not insert hardware breakpoints:\n\ | |
1165 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1166 | } |
c6510018 | 1167 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1168 | if (process_warning) |
c6510018 MS |
1169 | fprintf_unfiltered (tmp_error_stream, |
1170 | "The same program may be running in another process."); | |
1171 | #endif | |
81d0cc19 GS |
1172 | target_terminal_ours_for_output (); |
1173 | error_stream (tmp_error_stream); | |
1174 | } | |
53a5351d | 1175 | return return_val; |
c906108c SS |
1176 | } |
1177 | ||
c906108c | 1178 | int |
fba45db2 | 1179 | remove_breakpoints (void) |
c906108c | 1180 | { |
0bde7532 | 1181 | struct bp_location *b; |
c906108c SS |
1182 | int val; |
1183 | ||
0bde7532 | 1184 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1185 | { |
0bde7532 | 1186 | if (b->inserted) |
c5aa993b JM |
1187 | { |
1188 | val = remove_breakpoint (b, mark_uninserted); | |
1189 | if (val != 0) | |
1190 | return val; | |
1191 | } | |
1192 | } | |
c906108c SS |
1193 | return 0; |
1194 | } | |
1195 | ||
692590c1 | 1196 | int |
80ce1ecb | 1197 | remove_hw_watchpoints (void) |
692590c1 | 1198 | { |
0bde7532 | 1199 | struct bp_location *b; |
692590c1 MS |
1200 | int val; |
1201 | ||
0bde7532 | 1202 | ALL_BP_LOCATIONS (b) |
692590c1 | 1203 | { |
0bde7532 | 1204 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1205 | { |
1206 | val = remove_breakpoint (b, mark_uninserted); | |
1207 | if (val != 0) | |
1208 | return val; | |
1209 | } | |
1210 | } | |
1211 | return 0; | |
1212 | } | |
1213 | ||
c906108c | 1214 | int |
fba45db2 | 1215 | reattach_breakpoints (int pid) |
c906108c | 1216 | { |
0bde7532 | 1217 | struct bp_location *b; |
c906108c | 1218 | int val; |
ce696e05 | 1219 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1220 | |
ce696e05 KB |
1221 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1222 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1223 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1224 | { |
0bde7532 | 1225 | if (b->inserted) |
c5aa993b JM |
1226 | { |
1227 | remove_breakpoint (b, mark_inserted); | |
0bde7532 DJ |
1228 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1229 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
c5aa993b | 1230 | else |
0bde7532 DJ |
1231 | val = target_insert_breakpoint (b->address, b->shadow_contents); |
1232 | /* FIXME drow/2003-10-07: This doesn't handle any other kinds of | |
1233 | breakpoints. It's wrong for watchpoints, for example. */ | |
c5aa993b JM |
1234 | if (val != 0) |
1235 | { | |
ce696e05 | 1236 | do_cleanups (old_chain); |
c5aa993b JM |
1237 | return val; |
1238 | } | |
1239 | } | |
1240 | } | |
ce696e05 | 1241 | do_cleanups (old_chain); |
c906108c SS |
1242 | return 0; |
1243 | } | |
1244 | ||
1245 | void | |
fba45db2 | 1246 | update_breakpoints_after_exec (void) |
c906108c | 1247 | { |
c5aa993b JM |
1248 | struct breakpoint *b; |
1249 | struct breakpoint *temp; | |
c906108c SS |
1250 | |
1251 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1252 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1253 | shadow is NOT valid after an exec()! */ | |
1254 | mark_breakpoints_out (); | |
1255 | ||
1256 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1257 | { |
1258 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1259 | if (b->type == bp_shlib_event) | |
1260 | { | |
1261 | delete_breakpoint (b); | |
1262 | continue; | |
1263 | } | |
c906108c | 1264 | |
1900040c MS |
1265 | /* Thread event breakpoints must be set anew after an exec(), |
1266 | as must overlay event breakpoints. */ | |
1267 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1268 | { |
1269 | delete_breakpoint (b); | |
1270 | continue; | |
1271 | } | |
1272 | ||
c5aa993b JM |
1273 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1274 | if (b->type == bp_step_resume) | |
1275 | { | |
1276 | delete_breakpoint (b); | |
1277 | continue; | |
1278 | } | |
1279 | ||
1280 | /* Ditto the sigtramp handler breakpoints. */ | |
1281 | if (b->type == bp_through_sigtramp) | |
1282 | { | |
1283 | delete_breakpoint (b); | |
1284 | continue; | |
1285 | } | |
1286 | ||
1287 | /* Ditto the exception-handling catchpoints. */ | |
1288 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1289 | { | |
1290 | delete_breakpoint (b); | |
1291 | continue; | |
1292 | } | |
1293 | ||
1294 | /* Don't delete an exec catchpoint, because else the inferior | |
1295 | won't stop when it ought! | |
1296 | ||
1297 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1298 | on this target, we may not be able to stop when the vfork is |
1299 | seen, but only when the subsequent exec is seen. (And because | |
1300 | deleting fork catchpoints here but not vfork catchpoints will | |
1301 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1302 | |
1303 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1304 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1305 | automagically. Certainly on HP-UX that's true. |
1306 | ||
1307 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
41989fcd AC |
1308 | valid code address on some platforms (like the mn10300 |
1309 | simulators). We shouldn't assign any special interpretation to | |
1310 | a breakpoint with a zero address. And in fact, GDB doesn't --- | |
1311 | I can't see what that comment above is talking about. As far | |
1312 | as I can tell, setting the address of a | |
644a1fe1 JB |
1313 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero |
1314 | is meaningless, since those are implemented with HP-UX kernel | |
1315 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1316 | if ((b->type == bp_catch_exec) || |
1317 | (b->type == bp_catch_vfork) || | |
1318 | (b->type == bp_catch_fork)) | |
1319 | { | |
5cab636d | 1320 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b JM |
1321 | continue; |
1322 | } | |
1323 | ||
1324 | /* bp_finish is a special case. The only way we ought to be able | |
1325 | to see one of these when an exec() has happened, is if the user | |
1326 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1327 | carries them to the call-site of the current callee, by setting | |
1328 | a temporary bp there and resuming. But in this case, the finish | |
1329 | will carry them entirely through the vfork & exec. | |
1330 | ||
1331 | We don't want to allow a bp_finish to remain inserted now. But | |
1332 | we can't safely delete it, 'cause finish_command has a handle to | |
1333 | the bp on a bpstat, and will later want to delete it. There's a | |
1334 | chance (and I've seen it happen) that if we delete the bp_finish | |
1335 | here, that its storage will get reused by the time finish_command | |
1336 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1337 | We really must allow finish_command to delete a bp_finish. | |
1338 | ||
53a5351d JM |
1339 | In the absense of a general solution for the "how do we know |
1340 | it's safe to delete something others may have handles to?" | |
1341 | problem, what we'll do here is just uninsert the bp_finish, and | |
1342 | let finish_command delete it. | |
1343 | ||
1344 | (We know the bp_finish is "doomed" in the sense that it's | |
1345 | momentary, and will be deleted as soon as finish_command sees | |
1346 | the inferior stopped. So it doesn't matter that the bp's | |
1347 | address is probably bogus in the new a.out, unlike e.g., the | |
1348 | solib breakpoints.) */ | |
c5aa993b | 1349 | |
c5aa993b JM |
1350 | if (b->type == bp_finish) |
1351 | { | |
1352 | continue; | |
1353 | } | |
1354 | ||
1355 | /* Without a symbolic address, we have little hope of the | |
1356 | pre-exec() address meaning the same thing in the post-exec() | |
1357 | a.out. */ | |
1358 | if (b->addr_string == NULL) | |
1359 | { | |
1360 | delete_breakpoint (b); | |
1361 | continue; | |
1362 | } | |
1363 | ||
1364 | /* If this breakpoint has survived the above battery of checks, then | |
1365 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1366 | to a target address, rather than reusing the old evaluation. |
1367 | ||
1368 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1369 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1370 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1371 | the breakpoint's address from scratch, or deletes it if it can't. | |
1372 | So I think this assignment could be deleted without effect. */ | |
5cab636d | 1373 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b | 1374 | } |
1900040c MS |
1375 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1376 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1377 | } |
1378 | ||
1379 | int | |
fba45db2 | 1380 | detach_breakpoints (int pid) |
c906108c | 1381 | { |
0bde7532 | 1382 | struct bp_location *b; |
c906108c | 1383 | int val; |
ce696e05 | 1384 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1385 | |
39f77062 KB |
1386 | if (pid == PIDGET (inferior_ptid)) |
1387 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1388 | |
ce696e05 KB |
1389 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1390 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1391 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1392 | { |
0bde7532 | 1393 | if (b->inserted) |
c5aa993b JM |
1394 | { |
1395 | val = remove_breakpoint (b, mark_inserted); | |
1396 | if (val != 0) | |
1397 | { | |
ce696e05 | 1398 | do_cleanups (old_chain); |
c5aa993b JM |
1399 | return val; |
1400 | } | |
1401 | } | |
1402 | } | |
ce696e05 | 1403 | do_cleanups (old_chain); |
c906108c SS |
1404 | return 0; |
1405 | } | |
1406 | ||
1407 | static int | |
0bde7532 | 1408 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1409 | { |
1410 | int val; | |
c5aa993b | 1411 | |
0bde7532 | 1412 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1413 | /* Permanent breakpoints cannot be inserted or removed. */ |
1414 | return 0; | |
1415 | ||
0bde7532 | 1416 | if (b->owner->type == bp_none) |
53a5351d | 1417 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
0bde7532 DJ |
1418 | b->owner->number); |
1419 | ||
1420 | if (b->loc_type == bp_loc_software_breakpoint | |
1421 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1422 | { |
c02f5703 MS |
1423 | /* "Normal" instruction breakpoint: either the standard |
1424 | trap-instruction bp (bp_breakpoint), or a | |
1425 | bp_hardware_breakpoint. */ | |
1426 | ||
1427 | /* First check to see if we have to handle an overlay. */ | |
1428 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1429 | || b->section == NULL |
1430 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1431 | { |
1432 | /* No overlay handling: just remove the breakpoint. */ | |
1433 | ||
0bde7532 DJ |
1434 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1435 | val = target_remove_hw_breakpoint (b->address, | |
1436 | b->shadow_contents); | |
c02f5703 | 1437 | else |
0bde7532 | 1438 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c02f5703 | 1439 | } |
c906108c SS |
1440 | else |
1441 | { | |
c02f5703 MS |
1442 | /* This breakpoint is in an overlay section. |
1443 | Did we set a breakpoint at the LMA? */ | |
1444 | if (!overlay_events_enabled) | |
1445 | { | |
1446 | /* Yes -- overlay event support is not active, so we | |
1447 | should have set a breakpoint at the LMA. Remove it. | |
1448 | */ | |
0bde7532 DJ |
1449 | CORE_ADDR addr = overlay_unmapped_address (b->address, |
1450 | b->section); | |
c02f5703 MS |
1451 | /* Ignore any failures: if the LMA is in ROM, we will |
1452 | have already warned when we failed to insert it. */ | |
0bde7532 DJ |
1453 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1454 | target_remove_hw_breakpoint (addr, b->shadow_contents); | |
c02f5703 | 1455 | else |
0bde7532 | 1456 | target_remove_breakpoint (addr, b->shadow_contents); |
c02f5703 MS |
1457 | } |
1458 | /* Did we set a breakpoint at the VMA? | |
1459 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1460 | if (b->inserted) |
c906108c | 1461 | { |
c02f5703 MS |
1462 | /* Yes -- remove it. Previously we did not bother to |
1463 | remove the breakpoint if the section had been | |
1464 | unmapped, but let's not rely on that being safe. We | |
1465 | don't know what the overlay manager might do. */ | |
0bde7532 DJ |
1466 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1467 | val = target_remove_hw_breakpoint (b->address, | |
1468 | b->shadow_contents); | |
c02f5703 | 1469 | else |
0bde7532 DJ |
1470 | val = target_remove_breakpoint (b->address, |
1471 | b->shadow_contents); | |
c906108c | 1472 | } |
c02f5703 MS |
1473 | else |
1474 | { | |
1475 | /* No -- not inserted, so no need to remove. No error. */ | |
1476 | val = 0; | |
1477 | } | |
c906108c SS |
1478 | } |
1479 | if (val) | |
1480 | return val; | |
0bde7532 | 1481 | b->inserted = (is == mark_inserted); |
c906108c | 1482 | } |
0bde7532 | 1483 | else if (b->loc_type == bp_loc_hardware_watchpoint |
468d015d | 1484 | && breakpoint_enabled (b->owner) |
0bde7532 | 1485 | && !b->duplicate) |
c906108c | 1486 | { |
278cd55f AC |
1487 | struct value *v; |
1488 | struct value *n; | |
c5aa993b | 1489 | |
0bde7532 | 1490 | b->inserted = (is == mark_inserted); |
c906108c | 1491 | /* Walk down the saved value chain. */ |
0bde7532 | 1492 | for (v = b->owner->val_chain; v; v = v->next) |
c906108c SS |
1493 | { |
1494 | /* For each memory reference remove the watchpoint | |
1495 | at that address. */ | |
5c44784c JM |
1496 | if (VALUE_LVAL (v) == lval_memory |
1497 | && ! VALUE_LAZY (v)) | |
c906108c | 1498 | { |
2e70b7b9 MS |
1499 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1500 | ||
0bde7532 | 1501 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1502 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1503 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1504 | { | |
1505 | CORE_ADDR addr; | |
1506 | int len, type; | |
1507 | ||
1508 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1509 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1510 | type = hw_write; | |
0bde7532 | 1511 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1512 | type = hw_read; |
0bde7532 | 1513 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1514 | type = hw_access; |
1515 | ||
1516 | val = target_remove_watchpoint (addr, len, type); | |
1517 | if (val == -1) | |
0bde7532 | 1518 | b->inserted = 1; |
2e70b7b9 MS |
1519 | val = 0; |
1520 | } | |
c906108c SS |
1521 | } |
1522 | } | |
1523 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1524 | if ((is == mark_uninserted) && (b->inserted)) |
53a5351d | 1525 | warning ("Could not remove hardware watchpoint %d.", |
0bde7532 | 1526 | b->owner->number); |
c906108c | 1527 | } |
0bde7532 DJ |
1528 | else if ((b->owner->type == bp_catch_fork || |
1529 | b->owner->type == bp_catch_vfork || | |
1530 | b->owner->type == bp_catch_exec) | |
468d015d | 1531 | && breakpoint_enabled (b->owner) |
0bde7532 | 1532 | && !b->duplicate) |
c906108c SS |
1533 | { |
1534 | val = -1; | |
0bde7532 | 1535 | switch (b->owner->type) |
c5aa993b JM |
1536 | { |
1537 | case bp_catch_fork: | |
39f77062 | 1538 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1539 | break; |
1540 | case bp_catch_vfork: | |
39f77062 | 1541 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1542 | break; |
1543 | case bp_catch_exec: | |
39f77062 | 1544 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1545 | break; |
ac9a91a7 | 1546 | default: |
53a5351d | 1547 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1548 | break; |
c5aa993b | 1549 | } |
c906108c SS |
1550 | if (val) |
1551 | return val; | |
0bde7532 | 1552 | b->inserted = (is == mark_inserted); |
c906108c | 1553 | } |
0bde7532 DJ |
1554 | else if ((b->owner->type == bp_catch_catch || |
1555 | b->owner->type == bp_catch_throw) | |
468d015d | 1556 | && breakpoint_enabled (b->owner) |
0bde7532 | 1557 | && !b->duplicate) |
c906108c SS |
1558 | { |
1559 | ||
0bde7532 | 1560 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1561 | if (val) |
c5aa993b | 1562 | return val; |
0bde7532 | 1563 | b->inserted = (is == mark_inserted); |
c906108c | 1564 | } |
0bde7532 DJ |
1565 | else if (ep_is_exception_catchpoint (b->owner) |
1566 | && b->inserted /* sometimes previous insert doesn't happen */ | |
468d015d | 1567 | && breakpoint_enabled (b->owner) |
0bde7532 | 1568 | && !b->duplicate) |
c906108c SS |
1569 | { |
1570 | ||
0bde7532 | 1571 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1572 | if (val) |
c5aa993b JM |
1573 | return val; |
1574 | ||
0bde7532 | 1575 | b->inserted = (is == mark_inserted); |
c906108c SS |
1576 | } |
1577 | ||
1578 | return 0; | |
1579 | } | |
1580 | ||
1581 | /* Clear the "inserted" flag in all breakpoints. */ | |
1582 | ||
1583 | void | |
fba45db2 | 1584 | mark_breakpoints_out (void) |
c906108c | 1585 | { |
075f6582 | 1586 | struct bp_location *bpt; |
c906108c | 1587 | |
075f6582 DJ |
1588 | ALL_BP_LOCATIONS (bpt) |
1589 | bpt->inserted = 0; | |
c906108c SS |
1590 | } |
1591 | ||
53a5351d JM |
1592 | /* Clear the "inserted" flag in all breakpoints and delete any |
1593 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1594 | |
1595 | Plus other such housekeeping that has to be done for breakpoints | |
1596 | between runs. | |
1597 | ||
53a5351d JM |
1598 | Note: this function gets called at the end of a run (by |
1599 | generic_mourn_inferior) and when a run begins (by | |
1600 | init_wait_for_inferior). */ | |
c906108c SS |
1601 | |
1602 | ||
1603 | ||
1604 | void | |
fba45db2 | 1605 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1606 | { |
52f0bd74 | 1607 | struct breakpoint *b, *temp; |
075f6582 | 1608 | struct bp_location *bpt; |
c906108c SS |
1609 | static int warning_needed = 0; |
1610 | ||
075f6582 DJ |
1611 | ALL_BP_LOCATIONS (bpt) |
1612 | bpt->inserted = 0; | |
1613 | ||
c906108c | 1614 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1615 | { |
c5aa993b JM |
1616 | switch (b->type) |
1617 | { | |
1618 | case bp_call_dummy: | |
1619 | case bp_watchpoint_scope: | |
c906108c | 1620 | |
c5aa993b JM |
1621 | /* If the call dummy breakpoint is at the entry point it will |
1622 | cause problems when the inferior is rerun, so we better | |
1623 | get rid of it. | |
c906108c | 1624 | |
c5aa993b JM |
1625 | Also get rid of scope breakpoints. */ |
1626 | delete_breakpoint (b); | |
1627 | break; | |
c906108c | 1628 | |
c5aa993b JM |
1629 | case bp_watchpoint: |
1630 | case bp_hardware_watchpoint: | |
1631 | case bp_read_watchpoint: | |
1632 | case bp_access_watchpoint: | |
c906108c | 1633 | |
c5aa993b JM |
1634 | /* Likewise for watchpoints on local expressions. */ |
1635 | if (b->exp_valid_block != NULL) | |
1636 | delete_breakpoint (b); | |
c860120c PM |
1637 | if (context == inf_starting) |
1638 | { | |
1639 | /* Reset val field to force reread of starting value | |
1640 | in insert_breakpoints. */ | |
1641 | if (b->val) | |
1642 | value_free (b->val); | |
1643 | b->val = NULL; | |
1644 | } | |
c5aa993b JM |
1645 | break; |
1646 | default: | |
1647 | /* Likewise for exception catchpoints in dynamic-linked | |
1648 | executables where required */ | |
f83f82bc AC |
1649 | if (ep_is_exception_catchpoint (b) |
1650 | && deprecated_exception_catchpoints_are_fragile) | |
c5aa993b JM |
1651 | { |
1652 | warning_needed = 1; | |
c906108c | 1653 | delete_breakpoint (b); |
c5aa993b JM |
1654 | } |
1655 | break; | |
1656 | } | |
1657 | } | |
c906108c | 1658 | |
f83f82bc AC |
1659 | if (deprecated_exception_catchpoints_are_fragile) |
1660 | deprecated_exception_support_initialized = 0; | |
c906108c | 1661 | |
c5aa993b | 1662 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1663 | if (warning_needed && (context != inf_exited)) |
1664 | { | |
53a5351d JM |
1665 | warning ("Exception catchpoints from last run were deleted."); |
1666 | warning ("You must reinsert them explicitly."); | |
c906108c | 1667 | warning_needed = 0; |
c5aa993b | 1668 | } |
c906108c SS |
1669 | } |
1670 | ||
c2c6d25f JM |
1671 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1672 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1673 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1674 | permanent breakpoint. | |
1675 | - When continuing from a location with an ordinary breakpoint, we | |
1676 | actually single step once before calling insert_breakpoints. | |
1677 | - When continuing from a localion with a permanent breakpoint, we | |
1678 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1679 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1680 | |
c2c6d25f | 1681 | enum breakpoint_here |
fba45db2 | 1682 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1683 | { |
075f6582 | 1684 | struct bp_location *bpt; |
c2c6d25f | 1685 | int any_breakpoint_here = 0; |
c906108c | 1686 | |
075f6582 DJ |
1687 | ALL_BP_LOCATIONS (bpt) |
1688 | { | |
1689 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1690 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1691 | continue; | |
1692 | ||
468d015d | 1693 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1694 | || bpt->owner->enable_state == bp_permanent) |
1695 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1696 | { | |
1697 | if (overlay_debugging | |
1698 | && section_is_overlay (bpt->section) | |
1699 | && !section_is_mapped (bpt->section)) | |
1700 | continue; /* unmapped overlay -- can't be a match */ | |
1701 | else if (bpt->owner->enable_state == bp_permanent) | |
1702 | return permanent_breakpoint_here; | |
1703 | else | |
1704 | any_breakpoint_here = 1; | |
1705 | } | |
1706 | } | |
c906108c | 1707 | |
c2c6d25f | 1708 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1709 | } |
1710 | ||
c2c6d25f | 1711 | |
53a5351d JM |
1712 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1713 | but it only returns true if there is actually a breakpoint inserted | |
1714 | at PC. */ | |
c906108c SS |
1715 | |
1716 | int | |
fba45db2 | 1717 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1718 | { |
075f6582 | 1719 | struct bp_location *bpt; |
c906108c | 1720 | |
075f6582 | 1721 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1722 | { |
075f6582 DJ |
1723 | if (bpt->loc_type != bp_loc_software_breakpoint |
1724 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1725 | continue; | |
1726 | ||
1727 | if (bpt->inserted | |
1728 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1729 | { | |
1730 | if (overlay_debugging | |
1731 | && section_is_overlay (bpt->section) | |
1732 | && !section_is_mapped (bpt->section)) | |
1733 | continue; /* unmapped overlay -- can't be a match */ | |
1734 | else | |
1735 | return 1; | |
1736 | } | |
c5aa993b | 1737 | } |
c906108c SS |
1738 | |
1739 | return 0; | |
1740 | } | |
1741 | ||
4fa8626c DJ |
1742 | /* This function returns non-zero iff there is a software breakpoint |
1743 | inserted at PC. */ | |
1744 | ||
1745 | int | |
1746 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1747 | { | |
1748 | struct bp_location *bpt; | |
1749 | int any_breakpoint_here = 0; | |
1750 | ||
1751 | ALL_BP_LOCATIONS (bpt) | |
1752 | { | |
1753 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1754 | continue; | |
1755 | ||
1756 | if ((breakpoint_enabled (bpt->owner) | |
1757 | || bpt->owner->enable_state == bp_permanent) | |
1758 | && bpt->inserted | |
1759 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1760 | { | |
1761 | if (overlay_debugging | |
1762 | && section_is_overlay (bpt->section) | |
1763 | && !section_is_mapped (bpt->section)) | |
1764 | continue; /* unmapped overlay -- can't be a match */ | |
1765 | else | |
1766 | return 1; | |
1767 | } | |
1768 | } | |
1769 | ||
1770 | return 0; | |
1771 | } | |
1772 | ||
53a5351d | 1773 | /* Return nonzero if FRAME is a dummy frame. We can't use |
ae45cd16 | 1774 | DEPRECATED_PC_IN_CALL_DUMMY because figuring out the saved SP would |
ac2adee5 | 1775 | take too much time, at least using frame_register() on the 68k. |
ae45cd16 | 1776 | This means that for this function to work right a port must use the |
53a5351d | 1777 | bp_call_dummy breakpoint. */ |
c906108c SS |
1778 | |
1779 | int | |
bf1e52be | 1780 | deprecated_frame_in_dummy (struct frame_info *frame) |
c906108c | 1781 | { |
c906108c SS |
1782 | struct breakpoint *b; |
1783 | ||
0225421b | 1784 | /* This function is used by two files: get_frame_type(), after first |
07555a72 AC |
1785 | checking that !DEPRECATED_USE_GENERIC_DUMMY_FRAMES; and |
1786 | sparc-tdep.c, which doesn't yet use generic dummy frames anyway. */ | |
1787 | gdb_assert (!DEPRECATED_USE_GENERIC_DUMMY_FRAMES); | |
c5aa993b | 1788 | |
c906108c | 1789 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1790 | { |
1791 | if (b->type == bp_call_dummy | |
818dd999 | 1792 | && frame_id_eq (b->frame_id, get_frame_id (frame)) |
c5aa993b JM |
1793 | /* We need to check the PC as well as the frame on the sparc, |
1794 | for signals.exp in the testsuite. */ | |
bdd78e62 | 1795 | && (get_frame_pc (frame) |
5cab636d | 1796 | >= (b->loc->address |
b1e29e33 | 1797 | - DEPRECATED_SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * DEPRECATED_REGISTER_SIZE)) |
5cab636d | 1798 | && get_frame_pc (frame) <= b->loc->address) |
c5aa993b JM |
1799 | return 1; |
1800 | } | |
c906108c SS |
1801 | return 0; |
1802 | } | |
1803 | ||
075f6582 DJ |
1804 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1805 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1806 | |
1807 | int | |
39f77062 | 1808 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1809 | { |
075f6582 | 1810 | struct bp_location *bpt; |
c906108c SS |
1811 | int thread; |
1812 | ||
39f77062 | 1813 | thread = pid_to_thread_id (ptid); |
c906108c | 1814 | |
075f6582 | 1815 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1816 | { |
075f6582 DJ |
1817 | if (bpt->loc_type != bp_loc_software_breakpoint |
1818 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1819 | continue; | |
1820 | ||
468d015d | 1821 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1822 | || bpt->owner->enable_state == bp_permanent) |
1823 | && bpt->address == pc | |
1824 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1825 | { | |
1826 | if (overlay_debugging | |
1827 | && section_is_overlay (bpt->section) | |
1828 | && !section_is_mapped (bpt->section)) | |
1829 | continue; /* unmapped overlay -- can't be a match */ | |
1830 | else | |
1831 | return 1; | |
1832 | } | |
c5aa993b | 1833 | } |
c906108c SS |
1834 | |
1835 | return 0; | |
1836 | } | |
c906108c | 1837 | \f |
c5aa993b | 1838 | |
c906108c SS |
1839 | /* bpstat stuff. External routines' interfaces are documented |
1840 | in breakpoint.h. */ | |
1841 | ||
1842 | int | |
fba45db2 | 1843 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1844 | { |
1845 | return | |
1846 | (ep->type == bp_catch_load) | |
1847 | || (ep->type == bp_catch_unload) | |
1848 | || (ep->type == bp_catch_fork) | |
1849 | || (ep->type == bp_catch_vfork) | |
1850 | || (ep->type == bp_catch_exec) | |
1851 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1852 | || (ep->type == bp_catch_throw); |
c906108c | 1853 | |
c5aa993b | 1854 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1855 | } |
c5aa993b | 1856 | |
c906108c | 1857 | int |
fba45db2 | 1858 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1859 | { |
1860 | return | |
1861 | (ep->type == bp_catch_load) | |
d85310f7 | 1862 | || (ep->type == bp_catch_unload); |
c906108c SS |
1863 | } |
1864 | ||
1865 | int | |
fba45db2 | 1866 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1867 | { |
1868 | return | |
1869 | (ep->type == bp_catch_catch) | |
d85310f7 | 1870 | || (ep->type == bp_catch_throw); |
c906108c SS |
1871 | } |
1872 | ||
1873 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1874 | Also free any storage that is part of a bpstat. */ | |
1875 | ||
1876 | void | |
fba45db2 | 1877 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1878 | { |
1879 | bpstat p; | |
1880 | bpstat q; | |
1881 | ||
1882 | if (bsp == 0) | |
1883 | return; | |
1884 | p = *bsp; | |
1885 | while (p != NULL) | |
1886 | { | |
1887 | q = p->next; | |
1888 | if (p->old_val != NULL) | |
1889 | value_free (p->old_val); | |
c2b8ed2c | 1890 | free_command_lines (&p->commands); |
b8c9b27d | 1891 | xfree (p); |
c906108c SS |
1892 | p = q; |
1893 | } | |
1894 | *bsp = NULL; | |
1895 | } | |
1896 | ||
1897 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1898 | is part of the bpstat is copied as well. */ | |
1899 | ||
1900 | bpstat | |
fba45db2 | 1901 | bpstat_copy (bpstat bs) |
c906108c SS |
1902 | { |
1903 | bpstat p = NULL; | |
1904 | bpstat tmp; | |
1905 | bpstat retval = NULL; | |
1906 | ||
1907 | if (bs == NULL) | |
1908 | return bs; | |
1909 | ||
1910 | for (; bs != NULL; bs = bs->next) | |
1911 | { | |
1912 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1913 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1914 | if (bs->commands != NULL) |
1915 | tmp->commands = copy_command_lines (bs->commands); | |
1916 | if (bs->old_val != NULL) | |
1917 | tmp->old_val = value_copy (bs->old_val); | |
1918 | ||
c906108c SS |
1919 | if (p == NULL) |
1920 | /* This is the first thing in the chain. */ | |
1921 | retval = tmp; | |
1922 | else | |
1923 | p->next = tmp; | |
1924 | p = tmp; | |
1925 | } | |
1926 | p->next = NULL; | |
1927 | return retval; | |
1928 | } | |
1929 | ||
1930 | /* Find the bpstat associated with this breakpoint */ | |
1931 | ||
1932 | bpstat | |
fba45db2 | 1933 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1934 | { |
c5aa993b JM |
1935 | if (bsp == NULL) |
1936 | return NULL; | |
c906108c | 1937 | |
c5aa993b JM |
1938 | for (; bsp != NULL; bsp = bsp->next) |
1939 | { | |
1940 | if (bsp->breakpoint_at == breakpoint) | |
1941 | return bsp; | |
1942 | } | |
c906108c SS |
1943 | return NULL; |
1944 | } | |
1945 | ||
1946 | /* Find a step_resume breakpoint associated with this bpstat. | |
1947 | (If there are multiple step_resume bp's on the list, this function | |
1948 | will arbitrarily pick one.) | |
1949 | ||
1950 | It is an error to use this function if BPSTAT doesn't contain a | |
1951 | step_resume breakpoint. | |
1952 | ||
1953 | See wait_for_inferior's use of this function. */ | |
1954 | struct breakpoint * | |
fba45db2 | 1955 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1956 | { |
8601f500 MS |
1957 | int current_thread; |
1958 | ||
c906108c SS |
1959 | if (bsp == NULL) |
1960 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1961 | ||
8601f500 MS |
1962 | current_thread = pid_to_thread_id (inferior_ptid); |
1963 | ||
c906108c SS |
1964 | for (; bsp != NULL; bsp = bsp->next) |
1965 | { | |
1966 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1967 | (bsp->breakpoint_at->type == bp_step_resume) && |
1968 | (bsp->breakpoint_at->thread == current_thread || | |
1969 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1970 | return bsp->breakpoint_at; |
c906108c SS |
1971 | } |
1972 | ||
1973 | error ("Internal error (no step_resume breakpoint found)"); | |
1974 | } | |
1975 | ||
1976 | ||
1977 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1978 | at. *BSP upon return is a bpstat which points to the remaining | |
1979 | breakpoints stopped at (but which is not guaranteed to be good for | |
1980 | anything but further calls to bpstat_num). | |
1981 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1982 | ||
1983 | int | |
fba45db2 | 1984 | bpstat_num (bpstat *bsp) |
c906108c SS |
1985 | { |
1986 | struct breakpoint *b; | |
1987 | ||
1988 | if ((*bsp) == NULL) | |
1989 | return 0; /* No more breakpoint values */ | |
1990 | else | |
1991 | { | |
1992 | b = (*bsp)->breakpoint_at; | |
1993 | *bsp = (*bsp)->next; | |
1994 | if (b == NULL) | |
1995 | return -1; /* breakpoint that's been deleted since */ | |
1996 | else | |
c5aa993b | 1997 | return b->number; /* We have its number */ |
c906108c SS |
1998 | } |
1999 | } | |
2000 | ||
2001 | /* Modify BS so that the actions will not be performed. */ | |
2002 | ||
2003 | void | |
fba45db2 | 2004 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2005 | { |
2006 | for (; bs != NULL; bs = bs->next) | |
2007 | { | |
c2b8ed2c | 2008 | free_command_lines (&bs->commands); |
c906108c SS |
2009 | if (bs->old_val != NULL) |
2010 | { | |
2011 | value_free (bs->old_val); | |
2012 | bs->old_val = NULL; | |
2013 | } | |
2014 | } | |
2015 | } | |
2016 | ||
2017 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2018 | static void |
4efb68b1 | 2019 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2020 | { |
2021 | executing_breakpoint_commands = 0; | |
2022 | } | |
2023 | ||
2024 | /* Execute all the commands associated with all the breakpoints at this | |
2025 | location. Any of these commands could cause the process to proceed | |
2026 | beyond this point, etc. We look out for such changes by checking | |
2027 | the global "breakpoint_proceeded" after each command. */ | |
2028 | ||
2029 | void | |
fba45db2 | 2030 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2031 | { |
2032 | bpstat bs; | |
2033 | struct cleanup *old_chain; | |
c906108c SS |
2034 | |
2035 | /* Avoid endless recursion if a `source' command is contained | |
2036 | in bs->commands. */ | |
2037 | if (executing_breakpoint_commands) | |
2038 | return; | |
2039 | ||
2040 | executing_breakpoint_commands = 1; | |
2041 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2042 | ||
2043 | top: | |
2044 | /* Note that (as of this writing), our callers all appear to | |
2045 | be passing us the address of global stop_bpstat. And, if | |
2046 | our calls to execute_control_command cause the inferior to | |
2047 | proceed, that global (and hence, *bsp) will change. | |
2048 | ||
2049 | We must be careful to not touch *bsp unless the inferior | |
2050 | has not proceeded. */ | |
2051 | ||
2052 | /* This pointer will iterate over the list of bpstat's. */ | |
2053 | bs = *bsp; | |
2054 | ||
2055 | breakpoint_proceeded = 0; | |
2056 | for (; bs != NULL; bs = bs->next) | |
2057 | { | |
6c50ab1c JB |
2058 | struct command_line *cmd; |
2059 | struct cleanup *this_cmd_tree_chain; | |
2060 | ||
2061 | /* Take ownership of the BSP's command tree, if it has one. | |
2062 | ||
2063 | The command tree could legitimately contain commands like | |
2064 | 'step' and 'next', which call clear_proceed_status, which | |
2065 | frees stop_bpstat's command tree. To make sure this doesn't | |
2066 | free the tree we're executing out from under us, we need to | |
2067 | take ownership of the tree ourselves. Since a given bpstat's | |
2068 | commands are only executed once, we don't need to copy it; we | |
2069 | can clear the pointer in the bpstat, and make sure we free | |
2070 | the tree when we're done. */ | |
c906108c | 2071 | cmd = bs->commands; |
6c50ab1c JB |
2072 | bs->commands = 0; |
2073 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2074 | ||
c906108c SS |
2075 | while (cmd != NULL) |
2076 | { | |
2077 | execute_control_command (cmd); | |
2078 | ||
2079 | if (breakpoint_proceeded) | |
2080 | break; | |
2081 | else | |
2082 | cmd = cmd->next; | |
2083 | } | |
6c50ab1c JB |
2084 | |
2085 | /* We can free this command tree now. */ | |
2086 | do_cleanups (this_cmd_tree_chain); | |
2087 | ||
c906108c SS |
2088 | if (breakpoint_proceeded) |
2089 | /* The inferior is proceeded by the command; bomb out now. | |
2090 | The bpstat chain has been blown away by wait_for_inferior. | |
2091 | But since execution has stopped again, there is a new bpstat | |
2092 | to look at, so start over. */ | |
2093 | goto top; | |
c906108c | 2094 | } |
c2b8ed2c | 2095 | do_cleanups (old_chain); |
c906108c SS |
2096 | } |
2097 | ||
e514a9d6 | 2098 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2099 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2100 | by having it set different print_it values. |
2101 | ||
2102 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2103 | through the bpstat list of things causing this stop, calling the | |
2104 | print_bp_stop_message function on each one. The behavior of the | |
2105 | print_bp_stop_message function depends on the print_it field of | |
2106 | bpstat. If such field so indicates, call this function here. | |
2107 | ||
2108 | Return values from this routine (ultimately used by bpstat_print() | |
2109 | and normal_stop() to decide what to do): | |
2110 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2111 | don't print anything else. | |
2112 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2113 | that something to be followed by a location. | |
2114 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2115 | that something to be followed by a location. | |
2116 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2117 | analysis. */ | |
c906108c | 2118 | |
917317f4 | 2119 | static enum print_stop_action |
fba45db2 | 2120 | print_it_typical (bpstat bs) |
c906108c | 2121 | { |
3b31d625 | 2122 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2123 | struct ui_stream *stb; |
2124 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2125 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2126 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2127 | which has since been deleted. */ | |
e514a9d6 | 2128 | if (bs->breakpoint_at == NULL) |
917317f4 | 2129 | return PRINT_UNKNOWN; |
c906108c | 2130 | |
e514a9d6 | 2131 | switch (bs->breakpoint_at->type) |
c906108c | 2132 | { |
e514a9d6 JM |
2133 | case bp_breakpoint: |
2134 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2135 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2136 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2137 | bs->breakpoint_at->loc->address, | |
76897487 | 2138 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2139 | annotate_breakpoint (bs->breakpoint_at->number); |
2140 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2141 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2142 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2143 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2144 | ui_out_text (uiout, ", "); | |
2145 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2146 | break; |
2147 | ||
2148 | case bp_shlib_event: | |
917317f4 JM |
2149 | /* Did we stop because the user set the stop_on_solib_events |
2150 | variable? (If so, we report this as a generic, "Stopped due | |
2151 | to shlib event" message.) */ | |
e514a9d6 JM |
2152 | printf_filtered ("Stopped due to shared library event\n"); |
2153 | return PRINT_NOTHING; | |
2154 | break; | |
2155 | ||
c4093a6a JM |
2156 | case bp_thread_event: |
2157 | /* Not sure how we will get here. | |
2158 | GDB should not stop for these breakpoints. */ | |
2159 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2160 | return PRINT_NOTHING; | |
2161 | break; | |
2162 | ||
1900040c MS |
2163 | case bp_overlay_event: |
2164 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2165 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2166 | return PRINT_NOTHING; | |
2167 | break; | |
2168 | ||
e514a9d6 | 2169 | case bp_catch_load: |
c906108c SS |
2170 | annotate_catchpoint (bs->breakpoint_at->number); |
2171 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2172 | printf_filtered ("loaded"); |
2173 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2174 | return PRINT_SRC_AND_LOC; | |
2175 | break; | |
2176 | ||
2177 | case bp_catch_unload: | |
2178 | annotate_catchpoint (bs->breakpoint_at->number); | |
2179 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2180 | printf_filtered ("unloaded"); | |
2181 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2182 | return PRINT_SRC_AND_LOC; | |
2183 | break; | |
2184 | ||
2185 | case bp_catch_fork: | |
2186 | annotate_catchpoint (bs->breakpoint_at->number); | |
2187 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2188 | printf_filtered ("forked"); | |
53a5351d JM |
2189 | printf_filtered (" process %d), ", |
2190 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2191 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2192 | break; |
2193 | ||
2194 | case bp_catch_vfork: | |
2195 | annotate_catchpoint (bs->breakpoint_at->number); | |
2196 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2197 | printf_filtered ("vforked"); | |
2198 | printf_filtered (" process %d), ", | |
2199 | bs->breakpoint_at->forked_inferior_pid); | |
2200 | return PRINT_SRC_AND_LOC; | |
2201 | break; | |
2202 | ||
2203 | case bp_catch_exec: | |
c906108c SS |
2204 | annotate_catchpoint (bs->breakpoint_at->number); |
2205 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2206 | bs->breakpoint_at->number, |
2207 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2208 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2209 | break; |
2210 | ||
2211 | case bp_catch_catch: | |
53a5351d JM |
2212 | if (current_exception_event && |
2213 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2214 | { |
2215 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2216 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2217 | bs->breakpoint_at->number); | |
c5aa993b JM |
2218 | printf_filtered ("throw location "); |
2219 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2220 | printf_filtered ("%s:%d", | |
2221 | CURRENT_EXCEPTION_THROW_FILE, | |
2222 | CURRENT_EXCEPTION_THROW_LINE); | |
2223 | else | |
2224 | printf_filtered ("unknown"); | |
2225 | ||
2226 | printf_filtered (", catch location "); | |
2227 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2228 | printf_filtered ("%s:%d", | |
2229 | CURRENT_EXCEPTION_CATCH_FILE, | |
2230 | CURRENT_EXCEPTION_CATCH_LINE); | |
2231 | else | |
2232 | printf_filtered ("unknown"); | |
2233 | ||
2234 | printf_filtered ("\n"); | |
e514a9d6 JM |
2235 | /* don't bother to print location frame info */ |
2236 | return PRINT_SRC_ONLY; | |
c5aa993b | 2237 | } |
c906108c | 2238 | else |
c5aa993b | 2239 | { |
e514a9d6 JM |
2240 | /* really throw, some other bpstat will handle it */ |
2241 | return PRINT_UNKNOWN; | |
c5aa993b | 2242 | } |
e514a9d6 JM |
2243 | break; |
2244 | ||
2245 | case bp_catch_throw: | |
53a5351d JM |
2246 | if (current_exception_event && |
2247 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2248 | { |
2249 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2250 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2251 | bs->breakpoint_at->number); | |
c5aa993b JM |
2252 | printf_filtered ("throw location "); |
2253 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2254 | printf_filtered ("%s:%d", | |
2255 | CURRENT_EXCEPTION_THROW_FILE, | |
2256 | CURRENT_EXCEPTION_THROW_LINE); | |
2257 | else | |
2258 | printf_filtered ("unknown"); | |
2259 | ||
2260 | printf_filtered (", catch location "); | |
2261 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2262 | printf_filtered ("%s:%d", | |
2263 | CURRENT_EXCEPTION_CATCH_FILE, | |
2264 | CURRENT_EXCEPTION_CATCH_LINE); | |
2265 | else | |
2266 | printf_filtered ("unknown"); | |
2267 | ||
2268 | printf_filtered ("\n"); | |
e514a9d6 JM |
2269 | /* don't bother to print location frame info */ |
2270 | return PRINT_SRC_ONLY; | |
c5aa993b | 2271 | } |
c906108c | 2272 | else |
c5aa993b | 2273 | { |
e514a9d6 JM |
2274 | /* really catch, some other bpstat will handle it */ |
2275 | return PRINT_UNKNOWN; | |
c5aa993b | 2276 | } |
e514a9d6 | 2277 | break; |
c906108c | 2278 | |
e514a9d6 JM |
2279 | case bp_watchpoint: |
2280 | case bp_hardware_watchpoint: | |
2281 | if (bs->old_val != NULL) | |
2282 | { | |
2283 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2284 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2285 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2286 | mention (bs->breakpoint_at); |
3b31d625 | 2287 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2288 | ui_out_text (uiout, "\nOld value = "); |
2289 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2290 | ui_out_field_stream (uiout, "old", stb); | |
2291 | ui_out_text (uiout, "\nNew value = "); | |
2292 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2293 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2294 | do_cleanups (ui_out_chain); |
8b93c638 | 2295 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2296 | value_free (bs->old_val); |
2297 | bs->old_val = NULL; | |
2298 | } | |
2299 | /* More than one watchpoint may have been triggered. */ | |
2300 | return PRINT_UNKNOWN; | |
2301 | break; | |
2302 | ||
2303 | case bp_read_watchpoint: | |
9dc5e2a9 | 2304 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2305 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); |
8b93c638 | 2306 | mention (bs->breakpoint_at); |
3b31d625 | 2307 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2308 | ui_out_text (uiout, "\nValue = "); |
2309 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2310 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2311 | do_cleanups (ui_out_chain); |
8b93c638 | 2312 | ui_out_text (uiout, "\n"); |
917317f4 | 2313 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2314 | break; |
2315 | ||
2316 | case bp_access_watchpoint: | |
8b93c638 JM |
2317 | if (bs->old_val != NULL) |
2318 | { | |
2319 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2320 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2321 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2322 | mention (bs->breakpoint_at); |
3b31d625 | 2323 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2324 | ui_out_text (uiout, "\nOld value = "); |
2325 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2326 | ui_out_field_stream (uiout, "old", stb); | |
2327 | value_free (bs->old_val); | |
2328 | bs->old_val = NULL; | |
2329 | ui_out_text (uiout, "\nNew value = "); | |
2330 | } | |
2331 | else | |
2332 | { | |
2333 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2334 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2335 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
3b31d625 | 2336 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2337 | ui_out_text (uiout, "\nValue = "); |
2338 | } | |
2339 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2340 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2341 | do_cleanups (ui_out_chain); |
8b93c638 | 2342 | ui_out_text (uiout, "\n"); |
917317f4 | 2343 | return PRINT_UNKNOWN; |
e514a9d6 | 2344 | break; |
4ce44c66 | 2345 | |
e514a9d6 JM |
2346 | /* Fall through, we don't deal with these types of breakpoints |
2347 | here. */ | |
2348 | ||
11cf8741 | 2349 | case bp_finish: |
9dc5e2a9 | 2350 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2351 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2352 | return PRINT_UNKNOWN; |
2353 | break; | |
2354 | ||
e514a9d6 | 2355 | case bp_until: |
9dc5e2a9 | 2356 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2357 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2358 | return PRINT_UNKNOWN; |
2359 | break; | |
2360 | ||
c2d11a7d | 2361 | case bp_none: |
e514a9d6 JM |
2362 | case bp_longjmp: |
2363 | case bp_longjmp_resume: | |
2364 | case bp_step_resume: | |
2365 | case bp_through_sigtramp: | |
2366 | case bp_watchpoint_scope: | |
2367 | case bp_call_dummy: | |
2368 | default: | |
2369 | return PRINT_UNKNOWN; | |
2370 | } | |
2371 | } | |
2372 | ||
2373 | /* Generic routine for printing messages indicating why we | |
2374 | stopped. The behavior of this function depends on the value | |
2375 | 'print_it' in the bpstat structure. Under some circumstances we | |
2376 | may decide not to print anything here and delegate the task to | |
2377 | normal_stop(). */ | |
2378 | ||
2379 | static enum print_stop_action | |
2380 | print_bp_stop_message (bpstat bs) | |
2381 | { | |
2382 | switch (bs->print_it) | |
2383 | { | |
2384 | case print_it_noop: | |
2385 | /* Nothing should be printed for this bpstat entry. */ | |
2386 | return PRINT_UNKNOWN; | |
2387 | break; | |
2388 | ||
2389 | case print_it_done: | |
2390 | /* We still want to print the frame, but we already printed the | |
2391 | relevant messages. */ | |
2392 | return PRINT_SRC_AND_LOC; | |
2393 | break; | |
2394 | ||
2395 | case print_it_normal: | |
3086aeae DJ |
2396 | /* Normal case. Call the breakpoint's print_it method, or |
2397 | print_it_typical. */ | |
2398 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2399 | && bs->breakpoint_at->ops->print_it != NULL) | |
2400 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2401 | else | |
2402 | return print_it_typical (bs); | |
e514a9d6 | 2403 | break; |
3086aeae | 2404 | |
e514a9d6 | 2405 | default: |
8e65ff28 AC |
2406 | internal_error (__FILE__, __LINE__, |
2407 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2408 | break; |
c906108c | 2409 | } |
c906108c SS |
2410 | } |
2411 | ||
e514a9d6 JM |
2412 | /* Print a message indicating what happened. This is called from |
2413 | normal_stop(). The input to this routine is the head of the bpstat | |
2414 | list - a list of the eventpoints that caused this stop. This | |
2415 | routine calls the generic print routine for printing a message | |
2416 | about reasons for stopping. This will print (for example) the | |
2417 | "Breakpoint n," part of the output. The return value of this | |
2418 | routine is one of: | |
c906108c | 2419 | |
917317f4 JM |
2420 | PRINT_UNKNOWN: Means we printed nothing |
2421 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2422 | code to print the location. An example is |
2423 | "Breakpoint 1, " which should be followed by | |
2424 | the location. | |
917317f4 | 2425 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2426 | to also print the location part of the message. |
2427 | An example is the catch/throw messages, which | |
917317f4 JM |
2428 | don't require a location appended to the end. |
2429 | PRINT_NOTHING: We have done some printing and we don't need any | |
2430 | further info to be printed.*/ | |
c906108c | 2431 | |
917317f4 | 2432 | enum print_stop_action |
fba45db2 | 2433 | bpstat_print (bpstat bs) |
c906108c SS |
2434 | { |
2435 | int val; | |
c5aa993b | 2436 | |
c906108c | 2437 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2438 | (Currently all watchpoints go on the bpstat whether hit or not. |
2439 | That probably could (should) be changed, provided care is taken | |
c906108c | 2440 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2441 | for (; bs; bs = bs->next) |
2442 | { | |
2443 | val = print_bp_stop_message (bs); | |
2444 | if (val == PRINT_SRC_ONLY | |
2445 | || val == PRINT_SRC_AND_LOC | |
2446 | || val == PRINT_NOTHING) | |
2447 | return val; | |
2448 | } | |
c906108c | 2449 | |
e514a9d6 JM |
2450 | /* We reached the end of the chain, or we got a null BS to start |
2451 | with and nothing was printed. */ | |
917317f4 | 2452 | return PRINT_UNKNOWN; |
c906108c SS |
2453 | } |
2454 | ||
2455 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2456 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2457 | The argument is a "struct expression *" that has been cast to char * to | |
2458 | make it pass through catch_errors. */ | |
2459 | ||
2460 | static int | |
4efb68b1 | 2461 | breakpoint_cond_eval (void *exp) |
c906108c | 2462 | { |
278cd55f | 2463 | struct value *mark = value_mark (); |
c5aa993b | 2464 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2465 | value_free_to_mark (mark); |
2466 | return i; | |
2467 | } | |
2468 | ||
2469 | /* Allocate a new bpstat and chain it to the current one. */ | |
2470 | ||
2471 | static bpstat | |
831662b3 | 2472 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2473 | { |
2474 | bpstat bs; | |
2475 | ||
2476 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2477 | cbs->next = bs; | |
2478 | bs->breakpoint_at = b; | |
2479 | /* If the condition is false, etc., don't do the commands. */ | |
2480 | bs->commands = NULL; | |
2481 | bs->old_val = NULL; | |
2482 | bs->print_it = print_it_normal; | |
2483 | return bs; | |
2484 | } | |
2485 | \f | |
2486 | /* Possible return values for watchpoint_check (this can't be an enum | |
2487 | because of check_errors). */ | |
2488 | /* The watchpoint has been deleted. */ | |
2489 | #define WP_DELETED 1 | |
2490 | /* The value has changed. */ | |
2491 | #define WP_VALUE_CHANGED 2 | |
2492 | /* The value has not changed. */ | |
2493 | #define WP_VALUE_NOT_CHANGED 3 | |
2494 | ||
2495 | #define BP_TEMPFLAG 1 | |
2496 | #define BP_HARDWAREFLAG 2 | |
2497 | ||
2498 | /* Check watchpoint condition. */ | |
2499 | ||
2500 | static int | |
4efb68b1 | 2501 | watchpoint_check (void *p) |
c906108c SS |
2502 | { |
2503 | bpstat bs = (bpstat) p; | |
2504 | struct breakpoint *b; | |
2505 | struct frame_info *fr; | |
2506 | int within_current_scope; | |
2507 | ||
2508 | b = bs->breakpoint_at; | |
2509 | ||
2510 | if (b->exp_valid_block == NULL) | |
2511 | within_current_scope = 1; | |
2512 | else | |
2513 | { | |
2514 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2515 | any chance of handling watchpoints on local variables, we'll need |
2516 | the frame chain (so we can determine if we're in scope). */ | |
2517 | reinit_frame_cache (); | |
101dcfbe | 2518 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2519 | within_current_scope = (fr != NULL); |
c12260ac CV |
2520 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2521 | in the function but the stack frame has already been invalidated. | |
2522 | Since we can't rely on the values of local variables after the | |
2523 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2524 | state as `not changed' without further checking. |
2525 | ||
2526 | vinschen/2003-09-04: The former implementation left out the case | |
2527 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2528 | because the current PC is currently in an epilogue. Calling | |
2529 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2530 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2531 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2532 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2533 | if (fr && within_current_scope) |
c906108c SS |
2534 | /* If we end up stopping, the current frame will get selected |
2535 | in normal_stop. So this call to select_frame won't affect | |
2536 | the user. */ | |
0f7d239c | 2537 | select_frame (fr); |
c906108c | 2538 | } |
c5aa993b | 2539 | |
c906108c SS |
2540 | if (within_current_scope) |
2541 | { | |
2542 | /* We use value_{,free_to_}mark because it could be a | |
2543 | *long* time before we return to the command level and | |
c5aa993b JM |
2544 | call free_all_values. We can't call free_all_values because |
2545 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2546 | |
278cd55f AC |
2547 | struct value *mark = value_mark (); |
2548 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2549 | if (!value_equal (b->val, new_val)) |
2550 | { | |
2551 | release_value (new_val); | |
2552 | value_free_to_mark (mark); | |
2553 | bs->old_val = b->val; | |
2554 | b->val = new_val; | |
2555 | /* We will stop here */ | |
2556 | return WP_VALUE_CHANGED; | |
2557 | } | |
2558 | else | |
2559 | { | |
2560 | /* Nothing changed, don't do anything. */ | |
2561 | value_free_to_mark (mark); | |
2562 | /* We won't stop here */ | |
2563 | return WP_VALUE_NOT_CHANGED; | |
2564 | } | |
2565 | } | |
2566 | else | |
2567 | { | |
2568 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2569 | if we temporarily ignored the watchpoint, then when |
2570 | we reenter the block in which it is valid it contains | |
2571 | garbage (in the case of a function, it may have two | |
2572 | garbage values, one before and one after the prologue). | |
2573 | So we can't even detect the first assignment to it and | |
2574 | watch after that (since the garbage may or may not equal | |
2575 | the first value assigned). */ | |
4ce44c66 JM |
2576 | /* We print all the stop information in print_it_typical(), but |
2577 | in this case, by the time we call print_it_typical() this bp | |
2578 | will be deleted already. So we have no choice but print the | |
2579 | information here. */ | |
9dc5e2a9 | 2580 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2581 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2582 | ui_out_text (uiout, "\nWatchpoint "); |
2583 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2584 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2585 | which its expression is valid.\n"); | |
4ce44c66 | 2586 | |
c906108c | 2587 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2588 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2589 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2590 | |
2591 | return WP_DELETED; | |
2592 | } | |
2593 | } | |
2594 | ||
9709f61c DJ |
2595 | /* Get a bpstat associated with having just stopped at address |
2596 | BP_ADDR. */ | |
c906108c SS |
2597 | |
2598 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2599 | don't understand this stop. Result is a chain of bpstat's such that: | |
2600 | ||
c5aa993b | 2601 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2602 | |
c5aa993b | 2603 | if we understand why we stopped, the result is not null. |
c906108c | 2604 | |
c5aa993b JM |
2605 | Each element of the chain refers to a particular breakpoint or |
2606 | watchpoint at which we have stopped. (We may have stopped for | |
2607 | several reasons concurrently.) | |
c906108c | 2608 | |
c5aa993b JM |
2609 | Each element of the chain has valid next, breakpoint_at, |
2610 | commands, FIXME??? fields. */ | |
c906108c SS |
2611 | |
2612 | bpstat | |
fa5281d0 | 2613 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 2614 | { |
52f0bd74 | 2615 | struct breakpoint *b, *temp; |
c906108c SS |
2616 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
2617 | int real_breakpoint = 0; | |
2618 | /* Root of the chain of bpstat's */ | |
2619 | struct bpstats root_bs[1]; | |
2620 | /* Pointer to the last thing in the chain currently. */ | |
2621 | bpstat bs = root_bs; | |
fa5281d0 | 2622 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2623 | |
c906108c | 2624 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2625 | { |
468d015d | 2626 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2627 | continue; |
2628 | ||
7270d8f2 OF |
2629 | /* Hardware watchpoints are treated as non-existent if the reason we |
2630 | stopped wasn't a hardware watchpoint (we didn't stop on some data | |
2631 | address). Otherwise gdb won't stop on a break instruction in the code | |
2632 | (not from a breakpoint) when a hardware watchpoint has been defined. */ | |
c5aa993b | 2633 | if (b->type != bp_watchpoint |
7270d8f2 OF |
2634 | && !((b->type == bp_hardware_watchpoint |
2635 | || b->type == bp_read_watchpoint | |
2636 | || b->type == bp_access_watchpoint) | |
2637 | && target_stopped_data_address () != 0) | |
c5aa993b JM |
2638 | && b->type != bp_hardware_breakpoint |
2639 | && b->type != bp_catch_fork | |
2640 | && b->type != bp_catch_vfork | |
2641 | && b->type != bp_catch_exec | |
2642 | && b->type != bp_catch_catch | |
2643 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2644 | { |
5cab636d | 2645 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2646 | continue; |
2647 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2648 | && section_is_overlay (b->loc->section) |
2649 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2650 | continue; |
2651 | } | |
c906108c | 2652 | |
c02f5703 MS |
2653 | if (b->type == bp_hardware_breakpoint) |
2654 | { | |
9709f61c | 2655 | if (b->loc->address != bp_addr) |
c02f5703 MS |
2656 | continue; |
2657 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2658 | && section_is_overlay (b->loc->section) |
2659 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2660 | continue; |
2661 | } | |
c5aa993b | 2662 | |
c5aa993b JM |
2663 | /* Is this a catchpoint of a load or unload? If so, did we |
2664 | get a load or unload of the specified library? If not, | |
2665 | ignore it. */ | |
2666 | if ((b->type == bp_catch_load) | |
c906108c | 2667 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2668 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2669 | || ((b->dll_pathname != NULL) |
53a5351d | 2670 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2671 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2672 | PIDGET (inferior_ptid))) | |
53a5351d | 2673 | != 0))) |
c906108c | 2674 | #endif |
c5aa993b JM |
2675 | ) |
2676 | continue; | |
2677 | ||
2678 | if ((b->type == bp_catch_unload) | |
c906108c | 2679 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2680 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2681 | || ((b->dll_pathname != NULL) |
53a5351d | 2682 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2683 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2684 | PIDGET (inferior_ptid))) | |
53a5351d | 2685 | != 0))) |
c906108c | 2686 | #endif |
c5aa993b JM |
2687 | ) |
2688 | continue; | |
c906108c | 2689 | |
c5aa993b | 2690 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2691 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2692 | &b->forked_inferior_pid)) | |
c5aa993b | 2693 | continue; |
c906108c | 2694 | |
c5aa993b | 2695 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2696 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2697 | &b->forked_inferior_pid)) | |
c5aa993b | 2698 | continue; |
c906108c | 2699 | |
c5aa993b | 2700 | if ((b->type == bp_catch_exec) |
47932f85 | 2701 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2702 | continue; |
c906108c | 2703 | |
c5aa993b JM |
2704 | if (ep_is_exception_catchpoint (b) && |
2705 | !(current_exception_event = target_get_current_exception_event ())) | |
2706 | continue; | |
c906108c | 2707 | |
c5aa993b JM |
2708 | /* Come here if it's a watchpoint, or if the break address matches */ |
2709 | ||
2710 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2711 | ||
2712 | /* Watchpoints may change this, if not found to have triggered. */ | |
2713 | bs->stop = 1; | |
2714 | bs->print = 1; | |
2715 | ||
53a5351d JM |
2716 | if (b->type == bp_watchpoint || |
2717 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2718 | { |
9ebf4acf AC |
2719 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2720 | b->number); | |
2721 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2722 | int e = catch_errors (watchpoint_check, bs, message, | |
2723 | RETURN_MASK_ALL); | |
2724 | do_cleanups (cleanups); | |
2725 | switch (e) | |
c5aa993b JM |
2726 | { |
2727 | case WP_DELETED: | |
2728 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2729 | /* Actually this is superfluous, because by the time we |
2730 | call print_it_typical() the wp will be already deleted, | |
2731 | and the function will return immediately. */ | |
c5aa993b JM |
2732 | bs->print_it = print_it_done; |
2733 | /* Stop. */ | |
2734 | break; | |
2735 | case WP_VALUE_CHANGED: | |
2736 | /* Stop. */ | |
2737 | ++(b->hit_count); | |
2738 | break; | |
2739 | case WP_VALUE_NOT_CHANGED: | |
2740 | /* Don't stop. */ | |
2741 | bs->print_it = print_it_noop; | |
2742 | bs->stop = 0; | |
c5aa993b JM |
2743 | continue; |
2744 | default: | |
2745 | /* Can't happen. */ | |
2746 | /* FALLTHROUGH */ | |
2747 | case 0: | |
2748 | /* Error from catch_errors. */ | |
2749 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2750 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2751 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2752 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2753 | /* We've already printed what needs to be printed. */ |
2754 | bs->print_it = print_it_done; | |
2755 | ||
2756 | /* Stop. */ | |
2757 | break; | |
2758 | } | |
2759 | } | |
53a5351d JM |
2760 | else if (b->type == bp_read_watchpoint || |
2761 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2762 | { |
2763 | CORE_ADDR addr; | |
278cd55f | 2764 | struct value *v; |
c5aa993b JM |
2765 | int found = 0; |
2766 | ||
2767 | addr = target_stopped_data_address (); | |
2768 | if (addr == 0) | |
2769 | continue; | |
2770 | for (v = b->val_chain; v; v = v->next) | |
2771 | { | |
5c44784c JM |
2772 | if (VALUE_LVAL (v) == lval_memory |
2773 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2774 | { |
2e70b7b9 MS |
2775 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2776 | ||
2777 | if (v == b->val_chain | |
2778 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2779 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2780 | { | |
2781 | CORE_ADDR vaddr; | |
2782 | ||
2783 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2784 | /* Exact match not required. Within range is | |
2785 | sufficient. */ | |
2786 | if (addr >= vaddr && | |
2787 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2788 | found = 1; | |
2789 | } | |
c5aa993b JM |
2790 | } |
2791 | } | |
2792 | if (found) | |
9ebf4acf AC |
2793 | { |
2794 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2795 | b->number); | |
2796 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2797 | int e = catch_errors (watchpoint_check, bs, message, | |
2798 | RETURN_MASK_ALL); | |
2799 | do_cleanups (cleanups); | |
2800 | switch (e) | |
2801 | { | |
2802 | case WP_DELETED: | |
2803 | /* We've already printed what needs to be printed. */ | |
2804 | bs->print_it = print_it_done; | |
2805 | /* Stop. */ | |
2806 | break; | |
2807 | case WP_VALUE_CHANGED: | |
2808 | if (b->type == bp_read_watchpoint) | |
2809 | { | |
2810 | /* Don't stop: read watchpoints shouldn't fire if | |
2811 | the value has changed. This is for targets | |
2812 | which cannot set read-only watchpoints. */ | |
2813 | bs->print_it = print_it_noop; | |
2814 | bs->stop = 0; | |
2815 | continue; | |
2816 | } | |
2817 | ++(b->hit_count); | |
2818 | break; | |
2819 | case WP_VALUE_NOT_CHANGED: | |
2820 | /* Stop. */ | |
2821 | ++(b->hit_count); | |
2822 | break; | |
2823 | default: | |
2824 | /* Can't happen. */ | |
2825 | case 0: | |
2826 | /* Error from catch_errors. */ | |
2827 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2828 | if (b->related_breakpoint) | |
2829 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2830 | b->disposition = disp_del_at_next_stop; | |
2831 | /* We've already printed what needs to be printed. */ | |
2832 | bs->print_it = print_it_done; | |
2833 | break; | |
2834 | } | |
2835 | } | |
53a5351d JM |
2836 | else /* found == 0 */ |
2837 | { | |
2838 | /* This is a case where some watchpoint(s) triggered, | |
2839 | but not at the address of this watchpoint (FOUND | |
2840 | was left zero). So don't print anything for this | |
2841 | watchpoint. */ | |
2842 | bs->print_it = print_it_noop; | |
2843 | bs->stop = 0; | |
2844 | continue; | |
2845 | } | |
c5aa993b JM |
2846 | } |
2847 | else | |
2848 | { | |
2849 | /* By definition, an encountered breakpoint is a triggered | |
2850 | breakpoint. */ | |
2851 | ++(b->hit_count); | |
c906108c | 2852 | |
c5aa993b JM |
2853 | real_breakpoint = 1; |
2854 | } | |
2855 | ||
818dd999 AC |
2856 | if (frame_id_p (b->frame_id) |
2857 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2858 | bs->stop = 0; |
2859 | else | |
2860 | { | |
2861 | int value_is_zero = 0; | |
2862 | ||
2863 | if (b->cond) | |
2864 | { | |
2865 | /* Need to select the frame, with all that implies | |
2866 | so that the conditions will have the right context. */ | |
0f7d239c | 2867 | select_frame (get_current_frame ()); |
c5aa993b JM |
2868 | value_is_zero |
2869 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2870 | "Error in testing breakpoint condition:\n", | |
2871 | RETURN_MASK_ALL); | |
2872 | /* FIXME-someday, should give breakpoint # */ | |
2873 | free_all_values (); | |
2874 | } | |
2875 | if (b->cond && value_is_zero) | |
2876 | { | |
2877 | bs->stop = 0; | |
2878 | /* Don't consider this a hit. */ | |
2879 | --(b->hit_count); | |
2880 | } | |
fa5281d0 DJ |
2881 | else if (b->thread != -1 && b->thread != thread_id) |
2882 | { | |
2883 | bs->stop = 0; | |
2884 | /* Don't consider this a hit. */ | |
2885 | --(b->hit_count); | |
2886 | } | |
c5aa993b JM |
2887 | else if (b->ignore_count > 0) |
2888 | { | |
2889 | b->ignore_count--; | |
5c44784c | 2890 | annotate_ignore_count_change (); |
c5aa993b JM |
2891 | bs->stop = 0; |
2892 | } | |
2893 | else | |
2894 | { | |
2895 | /* We will stop here */ | |
b5de0fa7 EZ |
2896 | if (b->disposition == disp_disable) |
2897 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2898 | if (b->silent) |
2899 | bs->print = 0; | |
552f4abf | 2900 | bs->commands = b->commands; |
c5aa993b | 2901 | if (bs->commands && |
6314a349 AC |
2902 | (strcmp ("silent", bs->commands->line) == 0 |
2903 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
2904 | { |
2905 | bs->commands = bs->commands->next; | |
c906108c | 2906 | bs->print = 0; |
c5aa993b | 2907 | } |
552f4abf | 2908 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2909 | } |
2910 | } | |
2911 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2912 | if (bs->stop == 0 || bs->print == 0) | |
2913 | bs->print_it = print_it_noop; | |
2914 | } | |
c906108c SS |
2915 | |
2916 | bs->next = NULL; /* Terminate the chain */ | |
2917 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2918 | ||
c906108c SS |
2919 | /* The value of a hardware watchpoint hasn't changed, but the |
2920 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2921 | if (bs && !bs->stop && |
c906108c SS |
2922 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2923 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2924 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2925 | { | |
2926 | remove_breakpoints (); | |
2927 | insert_breakpoints (); | |
2928 | } | |
2929 | return bs; | |
2930 | } | |
2931 | \f | |
2932 | /* Tell what to do about this bpstat. */ | |
2933 | struct bpstat_what | |
fba45db2 | 2934 | bpstat_what (bpstat bs) |
c906108c SS |
2935 | { |
2936 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2937 | enum class |
2938 | { | |
2939 | /* This bpstat element has no effect on the main_action. */ | |
2940 | no_effect = 0, | |
2941 | ||
2942 | /* There was a watchpoint, stop but don't print. */ | |
2943 | wp_silent, | |
c906108c | 2944 | |
c5aa993b JM |
2945 | /* There was a watchpoint, stop and print. */ |
2946 | wp_noisy, | |
c906108c | 2947 | |
c5aa993b JM |
2948 | /* There was a breakpoint but we're not stopping. */ |
2949 | bp_nostop, | |
c906108c | 2950 | |
c5aa993b JM |
2951 | /* There was a breakpoint, stop but don't print. */ |
2952 | bp_silent, | |
c906108c | 2953 | |
c5aa993b JM |
2954 | /* There was a breakpoint, stop and print. */ |
2955 | bp_noisy, | |
c906108c | 2956 | |
c5aa993b JM |
2957 | /* We hit the longjmp breakpoint. */ |
2958 | long_jump, | |
c906108c | 2959 | |
c5aa993b JM |
2960 | /* We hit the longjmp_resume breakpoint. */ |
2961 | long_resume, | |
c906108c | 2962 | |
c5aa993b JM |
2963 | /* We hit the step_resume breakpoint. */ |
2964 | step_resume, | |
c906108c | 2965 | |
c5aa993b JM |
2966 | /* We hit the through_sigtramp breakpoint. */ |
2967 | through_sig, | |
c906108c | 2968 | |
c5aa993b JM |
2969 | /* We hit the shared library event breakpoint. */ |
2970 | shlib_event, | |
c906108c | 2971 | |
c5aa993b JM |
2972 | /* We caught a shared library event. */ |
2973 | catch_shlib_event, | |
c906108c | 2974 | |
c5aa993b JM |
2975 | /* This is just used to count how many enums there are. */ |
2976 | class_last | |
c906108c SS |
2977 | }; |
2978 | ||
2979 | /* Here is the table which drives this routine. So that we can | |
2980 | format it pretty, we define some abbreviations for the | |
2981 | enum bpstat_what codes. */ | |
2982 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2983 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2984 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2985 | #define sgl BPSTAT_WHAT_SINGLE | |
2986 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2987 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2988 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2989 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2990 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2991 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2992 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2993 | ||
2994 | /* "Can't happen." Might want to print an error message. | |
2995 | abort() is not out of the question, but chances are GDB is just | |
2996 | a bit confused, not unusable. */ | |
2997 | #define err BPSTAT_WHAT_STOP_NOISY | |
2998 | ||
2999 | /* Given an old action and a class, come up with a new action. */ | |
3000 | /* One interesting property of this table is that wp_silent is the same | |
3001 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3002 | after stopping, the check for whether to step over a breakpoint | |
3003 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3004 | reference to how we stopped. We retain separate wp_silent and |
3005 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3006 | |
3007 | Another possibly interesting property of this table is that | |
3008 | there's a partial ordering, priority-like, of the actions. Once | |
3009 | you've decided that some action is appropriate, you'll never go | |
3010 | back and decide something of a lower priority is better. The | |
3011 | ordering is: | |
3012 | ||
7e73cedf | 3013 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
3014 | sgl < clrs shl shlr slr sn sr ss ts |
3015 | slr < err shl shlr sn sr ss ts | |
3016 | clr < clrs err shl shlr sn sr ss ts | |
3017 | clrs < err shl shlr sn sr ss ts | |
3018 | ss < shl shlr sn sr ts | |
3019 | sn < shl shlr sr ts | |
3020 | sr < shl shlr ts | |
3021 | shl < shlr | |
3022 | ts < | |
3023 | shlr < | |
3024 | ||
43ff13b4 JM |
3025 | What I think this means is that we don't need a damned table |
3026 | here. If you just put the rows and columns in the right order, | |
3027 | it'd look awfully regular. We could simply walk the bpstat list | |
3028 | and choose the highest priority action we find, with a little | |
3029 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
3030 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
3031 | is messy anyway). */ | |
c906108c SS |
3032 | |
3033 | /* step_resume entries: a step resume breakpoint overrides another | |
3034 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3035 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3036 | /* We handle the through_sigtramp_breakpoint the same way; having both |
3037 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
3038 | ||
3039 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3040 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3041 | { | |
3042 | /* old action */ | |
3043 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
3044 | */ | |
3045 | /*no_effect */ | |
3046 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
3047 | /*wp_silent */ | |
3048 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3049 | /*wp_noisy */ | |
3050 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3051 | /*bp_nostop */ | |
3052 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
3053 | /*bp_silent */ | |
3054 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3055 | /*bp_noisy */ | |
3056 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3057 | /*long_jump */ | |
a48bb0b3 | 3058 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
3059 | /*long_resume */ |
3060 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
3061 | /*step_resume */ | |
3062 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
3063 | /*through_sig */ | |
3064 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
3065 | /*shlib */ | |
3066 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
3067 | /*catch_shlib */ | |
3068 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
3069 | }; | |
c906108c SS |
3070 | |
3071 | #undef kc | |
3072 | #undef ss | |
3073 | #undef sn | |
3074 | #undef sgl | |
3075 | #undef slr | |
3076 | #undef clr | |
3077 | #undef clrs | |
3078 | #undef err | |
3079 | #undef sr | |
3080 | #undef ts | |
3081 | #undef shl | |
3082 | #undef shlr | |
3083 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3084 | struct bpstat_what retval; | |
3085 | ||
3086 | retval.call_dummy = 0; | |
3087 | for (; bs != NULL; bs = bs->next) | |
3088 | { | |
3089 | enum class bs_class = no_effect; | |
3090 | if (bs->breakpoint_at == NULL) | |
3091 | /* I suspect this can happen if it was a momentary breakpoint | |
3092 | which has since been deleted. */ | |
3093 | continue; | |
3094 | switch (bs->breakpoint_at->type) | |
3095 | { | |
3096 | case bp_none: | |
3097 | continue; | |
3098 | ||
3099 | case bp_breakpoint: | |
3100 | case bp_hardware_breakpoint: | |
3101 | case bp_until: | |
3102 | case bp_finish: | |
3103 | if (bs->stop) | |
3104 | { | |
3105 | if (bs->print) | |
3106 | bs_class = bp_noisy; | |
3107 | else | |
3108 | bs_class = bp_silent; | |
3109 | } | |
3110 | else | |
3111 | bs_class = bp_nostop; | |
3112 | break; | |
3113 | case bp_watchpoint: | |
3114 | case bp_hardware_watchpoint: | |
3115 | case bp_read_watchpoint: | |
3116 | case bp_access_watchpoint: | |
3117 | if (bs->stop) | |
3118 | { | |
3119 | if (bs->print) | |
3120 | bs_class = wp_noisy; | |
3121 | else | |
3122 | bs_class = wp_silent; | |
3123 | } | |
3124 | else | |
53a5351d JM |
3125 | /* There was a watchpoint, but we're not stopping. |
3126 | This requires no further action. */ | |
c906108c SS |
3127 | bs_class = no_effect; |
3128 | break; | |
3129 | case bp_longjmp: | |
3130 | bs_class = long_jump; | |
3131 | break; | |
3132 | case bp_longjmp_resume: | |
3133 | bs_class = long_resume; | |
3134 | break; | |
3135 | case bp_step_resume: | |
3136 | if (bs->stop) | |
3137 | { | |
3138 | bs_class = step_resume; | |
3139 | } | |
3140 | else | |
3141 | /* It is for the wrong frame. */ | |
3142 | bs_class = bp_nostop; | |
3143 | break; | |
3144 | case bp_through_sigtramp: | |
3145 | bs_class = through_sig; | |
3146 | break; | |
3147 | case bp_watchpoint_scope: | |
3148 | bs_class = bp_nostop; | |
3149 | break; | |
c5aa993b JM |
3150 | case bp_shlib_event: |
3151 | bs_class = shlib_event; | |
3152 | break; | |
c4093a6a | 3153 | case bp_thread_event: |
1900040c | 3154 | case bp_overlay_event: |
c4093a6a JM |
3155 | bs_class = bp_nostop; |
3156 | break; | |
c5aa993b JM |
3157 | case bp_catch_load: |
3158 | case bp_catch_unload: | |
3159 | /* Only if this catchpoint triggered should we cause the | |
3160 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3161 | catchpoint. */ | |
3162 | if (bs->stop) | |
3163 | bs_class = catch_shlib_event; | |
3164 | else | |
3165 | bs_class = no_effect; | |
3166 | break; | |
3167 | case bp_catch_fork: | |
3168 | case bp_catch_vfork: | |
3169 | case bp_catch_exec: | |
3170 | if (bs->stop) | |
3171 | { | |
3172 | if (bs->print) | |
3173 | bs_class = bp_noisy; | |
3174 | else | |
3175 | bs_class = bp_silent; | |
3176 | } | |
3177 | else | |
53a5351d JM |
3178 | /* There was a catchpoint, but we're not stopping. |
3179 | This requires no further action. */ | |
c5aa993b JM |
3180 | bs_class = no_effect; |
3181 | break; | |
3182 | case bp_catch_catch: | |
3183 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3184 | bs_class = bp_nostop; | |
3185 | else if (bs->stop) | |
3186 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3187 | break; | |
3188 | case bp_catch_throw: | |
3189 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3190 | bs_class = bp_nostop; | |
3191 | else if (bs->stop) | |
3192 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3193 | break; |
c906108c | 3194 | case bp_call_dummy: |
53a5351d JM |
3195 | /* Make sure the action is stop (silent or noisy), |
3196 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3197 | bs_class = bp_silent; |
3198 | retval.call_dummy = 1; | |
3199 | break; | |
3200 | } | |
c5aa993b | 3201 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3202 | } |
3203 | retval.main_action = current_action; | |
3204 | return retval; | |
3205 | } | |
3206 | ||
3207 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3208 | without hardware support). This isn't related to a specific bpstat, | |
3209 | just to things like whether watchpoints are set. */ | |
3210 | ||
c5aa993b | 3211 | int |
fba45db2 | 3212 | bpstat_should_step (void) |
c906108c SS |
3213 | { |
3214 | struct breakpoint *b; | |
3215 | ALL_BREAKPOINTS (b) | |
468d015d | 3216 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3217 | return 1; |
c906108c SS |
3218 | return 0; |
3219 | } | |
3220 | ||
3221 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3222 | int | |
fba45db2 | 3223 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3224 | { |
075f6582 DJ |
3225 | struct bp_location *bpt; |
3226 | ALL_BP_LOCATIONS (bpt) | |
468d015d | 3227 | if (breakpoint_enabled (bpt->owner) |
075f6582 DJ |
3228 | && bpt->inserted |
3229 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3230 | return 1; |
c906108c SS |
3231 | return 0; |
3232 | } | |
c906108c | 3233 | \f |
c5aa993b | 3234 | |
c906108c SS |
3235 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3236 | function returns another bpstat which contains only the catchpoints | |
3237 | on that first list, if any. */ | |
3238 | void | |
fba45db2 | 3239 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3240 | { |
3241 | struct bpstats root_bs[1]; | |
3242 | bpstat bs = root_bs; | |
3243 | struct breakpoint *ep; | |
3244 | char *dll_pathname; | |
3245 | ||
c906108c SS |
3246 | bpstat_clear (cp_list); |
3247 | root_bs->next = NULL; | |
c5aa993b JM |
3248 | |
3249 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3250 | { |
3251 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3252 | ep = ep_list->breakpoint_at; | |
3253 | if (ep == NULL) | |
c5aa993b JM |
3254 | break; |
3255 | if ((ep->type != bp_catch_load) && | |
3256 | (ep->type != bp_catch_unload) && | |
3257 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3258 | (ep->type != bp_catch_throw)) |
3259 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3260 | continue; |
3261 | ||
c906108c SS |
3262 | /* Yes; add it to the list. */ |
3263 | bs = bpstat_alloc (ep, bs); | |
3264 | *bs = *ep_list; | |
3265 | bs->next = NULL; | |
3266 | bs = root_bs->next; | |
c5aa993b | 3267 | |
c906108c SS |
3268 | #if defined(SOLIB_ADD) |
3269 | /* Also, for each triggered catchpoint, tag it with the name of | |
3270 | the library that caused this trigger. (We copy the name now, | |
3271 | because it's only guaranteed to be available NOW, when the | |
3272 | catchpoint triggers. Clients who may wish to know the name | |
3273 | later must get it from the catchpoint itself.) */ | |
3274 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3275 | xfree (ep->triggered_dll_pathname); |
c906108c | 3276 | if (ep->type == bp_catch_load) |
39f77062 KB |
3277 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3278 | PIDGET (inferior_ptid)); | |
c906108c | 3279 | else |
39f77062 KB |
3280 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3281 | PIDGET (inferior_ptid)); | |
c906108c SS |
3282 | #else |
3283 | dll_pathname = NULL; | |
3284 | #endif | |
3285 | if (dll_pathname) | |
3286 | { | |
53a5351d JM |
3287 | ep->triggered_dll_pathname = (char *) |
3288 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3289 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3290 | } | |
3291 | else | |
3292 | ep->triggered_dll_pathname = NULL; | |
3293 | } | |
c5aa993b | 3294 | |
c906108c SS |
3295 | *cp_list = bs; |
3296 | } | |
3297 | ||
c4093a6a | 3298 | /* Print B to gdb_stdout. */ |
c906108c | 3299 | static void |
c4093a6a JM |
3300 | print_one_breakpoint (struct breakpoint *b, |
3301 | CORE_ADDR *last_addr) | |
c906108c | 3302 | { |
52f0bd74 AC |
3303 | struct command_line *l; |
3304 | struct symbol *sym; | |
c4093a6a JM |
3305 | struct ep_type_description |
3306 | { | |
3307 | enum bptype type; | |
3308 | char *description; | |
3309 | }; | |
3310 | static struct ep_type_description bptypes[] = | |
c906108c | 3311 | { |
c5aa993b JM |
3312 | {bp_none, "?deleted?"}, |
3313 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3314 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3315 | {bp_until, "until"}, |
3316 | {bp_finish, "finish"}, | |
3317 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3318 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3319 | {bp_read_watchpoint, "read watchpoint"}, |
3320 | {bp_access_watchpoint, "acc watchpoint"}, | |
3321 | {bp_longjmp, "longjmp"}, | |
3322 | {bp_longjmp_resume, "longjmp resume"}, | |
3323 | {bp_step_resume, "step resume"}, | |
3324 | {bp_through_sigtramp, "sigtramp"}, | |
3325 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3326 | {bp_call_dummy, "call dummy"}, | |
3327 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3328 | {bp_thread_event, "thread events"}, |
1900040c | 3329 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3330 | {bp_catch_load, "catch load"}, |
3331 | {bp_catch_unload, "catch unload"}, | |
3332 | {bp_catch_fork, "catch fork"}, | |
3333 | {bp_catch_vfork, "catch vfork"}, | |
3334 | {bp_catch_exec, "catch exec"}, | |
3335 | {bp_catch_catch, "catch catch"}, | |
3336 | {bp_catch_throw, "catch throw"} | |
3337 | }; | |
c4093a6a | 3338 | |
c5aa993b JM |
3339 | static char *bpdisps[] = |
3340 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3341 | static char bpenables[] = "nynny"; |
c906108c | 3342 | char wrap_indent[80]; |
8b93c638 JM |
3343 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3344 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3345 | struct cleanup *bkpt_chain; |
c906108c | 3346 | |
c4093a6a | 3347 | annotate_record (); |
3b31d625 | 3348 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3349 | |
3350 | /* 1 */ | |
3351 | annotate_field (0); | |
8b93c638 | 3352 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3353 | |
3354 | /* 2 */ | |
3355 | annotate_field (1); | |
3356 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3357 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3358 | internal_error (__FILE__, __LINE__, |
3359 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3360 | (int) b->type); |
8b93c638 | 3361 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3362 | |
3363 | /* 3 */ | |
3364 | annotate_field (2); | |
8b93c638 | 3365 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3366 | |
3367 | /* 4 */ | |
3368 | annotate_field (3); | |
b5de0fa7 | 3369 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3370 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3371 | |
3372 | /* 5 and 6 */ | |
3373 | strcpy (wrap_indent, " "); | |
3374 | if (addressprint) | |
75ac9d7b MS |
3375 | { |
3376 | if (TARGET_ADDR_BIT <= 32) | |
3377 | strcat (wrap_indent, " "); | |
3378 | else | |
3379 | strcat (wrap_indent, " "); | |
3380 | } | |
c906108c | 3381 | |
3086aeae DJ |
3382 | if (b->ops != NULL && b->ops->print_one != NULL) |
3383 | b->ops->print_one (b, last_addr); | |
3384 | else | |
3385 | switch (b->type) | |
3386 | { | |
3387 | case bp_none: | |
3388 | internal_error (__FILE__, __LINE__, | |
3389 | "print_one_breakpoint: bp_none encountered\n"); | |
3390 | break; | |
c906108c | 3391 | |
3086aeae DJ |
3392 | case bp_watchpoint: |
3393 | case bp_hardware_watchpoint: | |
3394 | case bp_read_watchpoint: | |
3395 | case bp_access_watchpoint: | |
3396 | /* Field 4, the address, is omitted (which makes the columns | |
3397 | not line up too nicely with the headers, but the effect | |
3398 | is relatively readable). */ | |
3399 | if (addressprint) | |
3400 | ui_out_field_skip (uiout, "addr"); | |
3401 | annotate_field (5); | |
3402 | print_expression (b->exp, stb->stream); | |
3403 | ui_out_field_stream (uiout, "what", stb); | |
3404 | break; | |
3405 | ||
3406 | case bp_catch_load: | |
3407 | case bp_catch_unload: | |
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->dll_pathname == NULL) | |
3415 | { | |
3416 | ui_out_field_string (uiout, "what", "<any library>"); | |
3417 | ui_out_spaces (uiout, 1); | |
3418 | } | |
3419 | else | |
3420 | { | |
3421 | ui_out_text (uiout, "library \""); | |
3422 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3423 | ui_out_text (uiout, "\" "); | |
3424 | } | |
3425 | break; | |
3426 | ||
3427 | case bp_catch_fork: | |
3428 | case bp_catch_vfork: | |
3429 | /* Field 4, the address, is omitted (which makes the columns | |
3430 | not line up too nicely with the headers, but the effect | |
3431 | is relatively readable). */ | |
3432 | if (addressprint) | |
3433 | ui_out_field_skip (uiout, "addr"); | |
3434 | annotate_field (5); | |
3435 | if (b->forked_inferior_pid != 0) | |
3436 | { | |
3437 | ui_out_text (uiout, "process "); | |
3438 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3439 | ui_out_spaces (uiout, 1); | |
3440 | } | |
3441 | ||
3442 | case bp_catch_exec: | |
3443 | /* Field 4, the address, is omitted (which makes the columns | |
3444 | not line up too nicely with the headers, but the effect | |
3445 | is relatively readable). */ | |
3446 | if (addressprint) | |
3447 | ui_out_field_skip (uiout, "addr"); | |
3448 | annotate_field (5); | |
3449 | if (b->exec_pathname != NULL) | |
3450 | { | |
3451 | ui_out_text (uiout, "program \""); | |
3452 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3453 | ui_out_text (uiout, "\" "); | |
3454 | } | |
3455 | break; | |
3456 | ||
3457 | case bp_catch_catch: | |
3458 | /* Field 4, the address, is omitted (which makes the columns | |
3459 | not line up too nicely with the headers, but the effect | |
3460 | is relatively readable). */ | |
3461 | if (addressprint) | |
3462 | ui_out_field_skip (uiout, "addr"); | |
3463 | annotate_field (5); | |
3464 | ui_out_field_string (uiout, "what", "exception catch"); | |
3465 | ui_out_spaces (uiout, 1); | |
3466 | break; | |
3467 | ||
3468 | case bp_catch_throw: | |
3469 | /* Field 4, the address, is omitted (which makes the columns | |
3470 | not line up too nicely with the headers, but the effect | |
3471 | is relatively readable). */ | |
3472 | if (addressprint) | |
3473 | ui_out_field_skip (uiout, "addr"); | |
3474 | annotate_field (5); | |
3475 | ui_out_field_string (uiout, "what", "exception throw"); | |
3476 | ui_out_spaces (uiout, 1); | |
3477 | break; | |
3478 | ||
3479 | case bp_breakpoint: | |
3480 | case bp_hardware_breakpoint: | |
3481 | case bp_until: | |
3482 | case bp_finish: | |
3483 | case bp_longjmp: | |
3484 | case bp_longjmp_resume: | |
3485 | case bp_step_resume: | |
3486 | case bp_through_sigtramp: | |
3487 | case bp_watchpoint_scope: | |
3488 | case bp_call_dummy: | |
3489 | case bp_shlib_event: | |
3490 | case bp_thread_event: | |
3491 | case bp_overlay_event: | |
3492 | if (addressprint) | |
3493 | { | |
3494 | annotate_field (4); | |
0101ce28 | 3495 | if (b->pending) |
d5479188 | 3496 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 JJ |
3497 | else |
3498 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
3499 | } |
3500 | annotate_field (5); | |
5cab636d | 3501 | *last_addr = b->loc->address; |
3086aeae DJ |
3502 | if (b->source_file) |
3503 | { | |
cf3a9e5b | 3504 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3505 | if (sym) |
3506 | { | |
3507 | ui_out_text (uiout, "in "); | |
3508 | ui_out_field_string (uiout, "func", | |
3509 | SYMBOL_PRINT_NAME (sym)); | |
3510 | ui_out_wrap_hint (uiout, wrap_indent); | |
3511 | ui_out_text (uiout, " at "); | |
3512 | } | |
3513 | ui_out_field_string (uiout, "file", b->source_file); | |
3514 | ui_out_text (uiout, ":"); | |
3515 | ui_out_field_int (uiout, "line", b->line_number); | |
3516 | } | |
0101ce28 JJ |
3517 | else if (b->pending) |
3518 | { | |
3519 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3520 | } | |
3086aeae DJ |
3521 | else |
3522 | { | |
5cab636d | 3523 | print_address_symbolic (b->loc->address, stb->stream, demangle, ""); |
3086aeae DJ |
3524 | ui_out_field_stream (uiout, "at", stb); |
3525 | } | |
3526 | break; | |
3527 | } | |
c906108c | 3528 | |
c4093a6a JM |
3529 | if (b->thread != -1) |
3530 | { | |
8b93c638 JM |
3531 | /* FIXME: This seems to be redundant and lost here; see the |
3532 | "stop only in" line a little further down. */ | |
3533 | ui_out_text (uiout, " thread "); | |
3534 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3535 | } |
3536 | ||
8b93c638 | 3537 | ui_out_text (uiout, "\n"); |
c4093a6a | 3538 | |
818dd999 | 3539 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3540 | { |
3541 | annotate_field (6); | |
8b93c638 | 3542 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3543 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3544 | the frame ID. */ | |
d0a55772 | 3545 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3546 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3547 | } |
3548 | ||
3549 | if (b->cond) | |
3550 | { | |
3551 | annotate_field (7); | |
8b93c638 JM |
3552 | ui_out_text (uiout, "\tstop only if "); |
3553 | print_expression (b->cond, stb->stream); | |
3554 | ui_out_field_stream (uiout, "cond", stb); | |
3555 | ui_out_text (uiout, "\n"); | |
c4093a6a | 3556 | } |
0101ce28 JJ |
3557 | |
3558 | if (b->pending && b->cond_string) | |
3559 | { | |
3560 | annotate_field (7); | |
3561 | ui_out_text (uiout, "\tstop only if "); | |
3562 | ui_out_field_string (uiout, "cond", b->cond_string); | |
3563 | ui_out_text (uiout, "\n"); | |
3564 | } | |
3565 | ||
c4093a6a JM |
3566 | if (b->thread != -1) |
3567 | { | |
3568 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3569 | ui_out_text (uiout, "\tstop only in thread "); |
3570 | ui_out_field_int (uiout, "thread", b->thread); | |
3571 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3572 | } |
3573 | ||
3574 | if (show_breakpoint_hit_counts && b->hit_count) | |
3575 | { | |
3576 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3577 | if (ep_is_catchpoint (b)) |
3578 | ui_out_text (uiout, "\tcatchpoint"); | |
3579 | else | |
3580 | ui_out_text (uiout, "\tbreakpoint"); | |
3581 | ui_out_text (uiout, " already hit "); | |
3582 | ui_out_field_int (uiout, "times", b->hit_count); | |
3583 | if (b->hit_count == 1) | |
3584 | ui_out_text (uiout, " time\n"); | |
3585 | else | |
3586 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3587 | } |
3588 | ||
fb40c209 AC |
3589 | /* Output the count also if it is zero, but only if this is |
3590 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3591 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3592 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3593 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3594 | |
c4093a6a JM |
3595 | if (b->ignore_count) |
3596 | { | |
3597 | annotate_field (8); | |
8b93c638 JM |
3598 | ui_out_text (uiout, "\tignore next "); |
3599 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3600 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3601 | } |
3602 | ||
3603 | if ((l = b->commands)) | |
3604 | { | |
3b31d625 EZ |
3605 | struct cleanup *script_chain; |
3606 | ||
c4093a6a | 3607 | annotate_field (9); |
3b31d625 | 3608 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3609 | print_command_lines (uiout, l, 4); |
3b31d625 | 3610 | do_cleanups (script_chain); |
c4093a6a | 3611 | } |
3b31d625 | 3612 | do_cleanups (bkpt_chain); |
8b93c638 | 3613 | do_cleanups (old_chain); |
c4093a6a | 3614 | } |
c5aa993b | 3615 | |
c4093a6a JM |
3616 | struct captured_breakpoint_query_args |
3617 | { | |
3618 | int bnum; | |
3619 | }; | |
c5aa993b | 3620 | |
c4093a6a | 3621 | static int |
2b65245e | 3622 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3623 | { |
3624 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3625 | struct breakpoint *b; |
c4093a6a JM |
3626 | CORE_ADDR dummy_addr = 0; |
3627 | ALL_BREAKPOINTS (b) | |
3628 | { | |
3629 | if (args->bnum == b->number) | |
c5aa993b | 3630 | { |
c4093a6a JM |
3631 | print_one_breakpoint (b, &dummy_addr); |
3632 | return GDB_RC_OK; | |
c5aa993b | 3633 | } |
c4093a6a JM |
3634 | } |
3635 | return GDB_RC_NONE; | |
3636 | } | |
c5aa993b | 3637 | |
c4093a6a | 3638 | enum gdb_rc |
2b65245e | 3639 | gdb_breakpoint_query (struct ui_out *uiout, int bnum) |
c4093a6a JM |
3640 | { |
3641 | struct captured_breakpoint_query_args args; | |
3642 | args.bnum = bnum; | |
3643 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3644 | an error. */ | |
2b65245e AC |
3645 | return catch_exceptions (uiout, do_captured_breakpoint_query, &args, |
3646 | NULL, RETURN_MASK_ALL); | |
c4093a6a | 3647 | } |
c5aa993b | 3648 | |
7f3b0473 AC |
3649 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3650 | catchpoints, et.al.). */ | |
3651 | ||
3652 | static int | |
3653 | user_settable_breakpoint (const struct breakpoint *b) | |
3654 | { | |
3655 | return (b->type == bp_breakpoint | |
3656 | || b->type == bp_catch_load | |
3657 | || b->type == bp_catch_unload | |
3658 | || b->type == bp_catch_fork | |
3659 | || b->type == bp_catch_vfork | |
3660 | || b->type == bp_catch_exec | |
3661 | || b->type == bp_catch_catch | |
3662 | || b->type == bp_catch_throw | |
3663 | || b->type == bp_hardware_breakpoint | |
3664 | || b->type == bp_watchpoint | |
3665 | || b->type == bp_read_watchpoint | |
3666 | || b->type == bp_access_watchpoint | |
3667 | || b->type == bp_hardware_watchpoint); | |
3668 | } | |
3669 | ||
3670 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3671 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3672 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3673 | |
c4093a6a | 3674 | static void |
fba45db2 | 3675 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3676 | { |
52f0bd74 | 3677 | struct breakpoint *b; |
c4093a6a | 3678 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3679 | int nr_printable_breakpoints; |
3b31d625 | 3680 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3681 | |
7f3b0473 AC |
3682 | /* Compute the number of rows in the table. */ |
3683 | nr_printable_breakpoints = 0; | |
3684 | ALL_BREAKPOINTS (b) | |
3685 | if (bnum == -1 | |
3686 | || bnum == b->number) | |
3687 | { | |
3688 | if (allflag || user_settable_breakpoint (b)) | |
3689 | nr_printable_breakpoints++; | |
3690 | } | |
3691 | ||
8b93c638 | 3692 | if (addressprint) |
3b31d625 EZ |
3693 | bkpttbl_chain |
3694 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3695 | "BreakpointTable"); | |
8b93c638 | 3696 | else |
3b31d625 EZ |
3697 | bkpttbl_chain |
3698 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3699 | "BreakpointTable"); | |
8b93c638 | 3700 | |
7f3b0473 | 3701 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3702 | annotate_breakpoints_headers (); |
3703 | if (nr_printable_breakpoints > 0) | |
3704 | annotate_field (0); | |
3705 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3706 | if (nr_printable_breakpoints > 0) | |
3707 | annotate_field (1); | |
3708 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3709 | if (nr_printable_breakpoints > 0) | |
3710 | annotate_field (2); | |
3711 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3712 | if (nr_printable_breakpoints > 0) | |
3713 | annotate_field (3); | |
3714 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3715 | if (addressprint) | |
7f3b0473 | 3716 | { |
d7faa9e7 AC |
3717 | if (nr_printable_breakpoints > 0) |
3718 | annotate_field (4); | |
7f3b0473 | 3719 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3720 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3721 | else |
b25959ec | 3722 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3723 | } |
d7faa9e7 AC |
3724 | if (nr_printable_breakpoints > 0) |
3725 | annotate_field (5); | |
3726 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3727 | ui_out_table_body (uiout); | |
3728 | if (nr_printable_breakpoints > 0) | |
3729 | annotate_breakpoints_table (); | |
7f3b0473 | 3730 | |
c4093a6a JM |
3731 | ALL_BREAKPOINTS (b) |
3732 | if (bnum == -1 | |
3733 | || bnum == b->number) | |
3734 | { | |
3735 | /* We only print out user settable breakpoints unless the | |
3736 | allflag is set. */ | |
7f3b0473 AC |
3737 | if (allflag || user_settable_breakpoint (b)) |
3738 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3739 | } |
3740 | ||
3b31d625 | 3741 | do_cleanups (bkpttbl_chain); |
698384cd | 3742 | |
7f3b0473 | 3743 | if (nr_printable_breakpoints == 0) |
c906108c | 3744 | { |
8b93c638 JM |
3745 | if (bnum == -1) |
3746 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3747 | else | |
3748 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3749 | bnum); | |
c906108c SS |
3750 | } |
3751 | else | |
c4093a6a JM |
3752 | { |
3753 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3754 | that a comparison of an unsigned with -1 is always false. */ | |
3755 | if (last_addr != (CORE_ADDR) -1) | |
3756 | set_next_address (last_addr); | |
3757 | } | |
c906108c | 3758 | |
c4093a6a JM |
3759 | /* FIXME? Should this be moved up so that it is only called when |
3760 | there have been breakpoints? */ | |
c906108c SS |
3761 | annotate_breakpoints_table_end (); |
3762 | } | |
3763 | ||
c906108c | 3764 | static void |
fba45db2 | 3765 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3766 | { |
3767 | int bnum = -1; | |
3768 | ||
3769 | if (bnum_exp) | |
bb518678 | 3770 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3771 | |
3772 | breakpoint_1 (bnum, 0); | |
3773 | } | |
3774 | ||
7a292a7a | 3775 | static void |
fba45db2 | 3776 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3777 | { |
3778 | int bnum = -1; | |
3779 | ||
3780 | if (bnum_exp) | |
bb518678 | 3781 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3782 | |
3783 | breakpoint_1 (bnum, 1); | |
3784 | } | |
3785 | ||
c906108c SS |
3786 | /* Print a message describing any breakpoints set at PC. */ |
3787 | ||
3788 | static void | |
fba45db2 | 3789 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c | 3790 | { |
52f0bd74 AC |
3791 | int others = 0; |
3792 | struct breakpoint *b; | |
c906108c SS |
3793 | |
3794 | ALL_BREAKPOINTS (b) | |
5cab636d | 3795 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3796 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 | 3797 | others++; |
c906108c SS |
3798 | if (others > 0) |
3799 | { | |
3800 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3801 | ALL_BREAKPOINTS (b) | |
5cab636d | 3802 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3803 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 MS |
3804 | { |
3805 | others--; | |
3806 | printf_filtered ("%d%s%s ", | |
3807 | b->number, | |
3808 | ((b->enable_state == bp_disabled || | |
3809 | b->enable_state == bp_shlib_disabled || | |
3810 | b->enable_state == bp_call_disabled) | |
3811 | ? " (disabled)" | |
3812 | : b->enable_state == bp_permanent | |
3813 | ? " (permanent)" | |
3814 | : ""), | |
3815 | (others > 1) ? "," | |
3816 | : ((others == 1) ? " and" : "")); | |
3817 | } | |
c906108c SS |
3818 | printf_filtered ("also set at pc "); |
3819 | print_address_numeric (pc, 1, gdb_stdout); | |
3820 | printf_filtered (".\n"); | |
3821 | } | |
3822 | } | |
3823 | \f | |
3824 | /* Set the default place to put a breakpoint | |
3825 | for the `break' command with no arguments. */ | |
3826 | ||
3827 | void | |
fba45db2 KB |
3828 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3829 | int line) | |
c906108c SS |
3830 | { |
3831 | default_breakpoint_valid = valid; | |
3832 | default_breakpoint_address = addr; | |
3833 | default_breakpoint_symtab = symtab; | |
3834 | default_breakpoint_line = line; | |
3835 | } | |
3836 | ||
e4f237da KB |
3837 | /* Return true iff it is meaningful to use the address member of |
3838 | BPT. For some breakpoint types, the address member is irrelevant | |
3839 | and it makes no sense to attempt to compare it to other addresses | |
3840 | (or use it for any other purpose either). | |
3841 | ||
3842 | More specifically, each of the following breakpoint types will always | |
3843 | have a zero valued address and we don't want check_duplicates() to mark | |
3844 | breakpoints of any of these types to be a duplicate of an actual | |
3845 | breakpoint at address zero: | |
3846 | ||
3847 | bp_watchpoint | |
3848 | bp_hardware_watchpoint | |
3849 | bp_read_watchpoint | |
3850 | bp_access_watchpoint | |
3851 | bp_catch_exec | |
3852 | bp_longjmp_resume | |
3853 | bp_catch_fork | |
3854 | bp_catch_vork */ | |
3855 | ||
3856 | static int | |
3857 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3858 | { | |
3859 | enum bptype type = bpt->type; | |
3860 | ||
3861 | return (type != bp_watchpoint | |
3862 | && type != bp_hardware_watchpoint | |
3863 | && type != bp_read_watchpoint | |
3864 | && type != bp_access_watchpoint | |
3865 | && type != bp_catch_exec | |
3866 | && type != bp_longjmp_resume | |
3867 | && type != bp_catch_fork | |
3868 | && type != bp_catch_vfork); | |
3869 | } | |
3870 | ||
9f60f21b | 3871 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3872 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3873 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3874 | If we have a permanent breakpoint at the same place as BPT, make |
3875 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3876 | |
3877 | static void | |
9f60f21b | 3878 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3879 | { |
075f6582 | 3880 | struct bp_location *b; |
52f0bd74 | 3881 | int count = 0; |
075f6582 | 3882 | struct bp_location *perm_bp = 0; |
5cab636d | 3883 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 3884 | asection *section = bpt->loc->section; |
c906108c | 3885 | |
e4f237da | 3886 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3887 | return; |
3888 | ||
075f6582 DJ |
3889 | ALL_BP_LOCATIONS (b) |
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)) | |
c5aa993b | 3897 | { |
c2c6d25f | 3898 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3899 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3900 | { |
3901 | perm_bp = b; | |
3902 | break; | |
3903 | } | |
3904 | ||
c5aa993b | 3905 | count++; |
075f6582 | 3906 | b->duplicate = count > 1; |
c5aa993b | 3907 | } |
c2c6d25f JM |
3908 | |
3909 | /* If we found a permanent breakpoint at this address, go over the | |
3910 | list again and declare all the other breakpoints there to be the | |
3911 | duplicates. */ | |
3912 | if (perm_bp) | |
3913 | { | |
075f6582 | 3914 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3915 | |
3916 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3917 | if (! perm_bp->inserted) |
8e65ff28 AC |
3918 | internal_error (__FILE__, __LINE__, |
3919 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3920 | "actually inserted"); |
3921 | ||
075f6582 | 3922 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3923 | if (b != perm_bp) |
3924 | { | |
075f6582 DJ |
3925 | if (b->owner->enable_state != bp_disabled |
3926 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3927 | && !b->owner->pending |
075f6582 DJ |
3928 | && b->owner->enable_state != bp_call_disabled |
3929 | && b->address == address /* address / overlay match */ | |
3930 | && (!overlay_debugging || b->section == section) | |
3931 | && breakpoint_address_is_meaningful (b->owner)) | |
3932 | { | |
3933 | if (b->inserted) | |
3934 | internal_error (__FILE__, __LINE__, | |
3935 | "another breakpoint was inserted on top of " | |
3936 | "a permanent breakpoint"); | |
3937 | ||
3938 | b->duplicate = 1; | |
3939 | } | |
c2c6d25f JM |
3940 | } |
3941 | } | |
c906108c SS |
3942 | } |
3943 | ||
76897487 KB |
3944 | static void |
3945 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
3946 | int bnum, int have_bnum) | |
3947 | { | |
3948 | char astr1[40]; | |
3949 | char astr2[40]; | |
3950 | ||
3951 | strcpy (astr1, local_hex_string_custom ((unsigned long) from_addr, "08l")); | |
3952 | strcpy (astr2, local_hex_string_custom ((unsigned long) to_addr, "08l")); | |
3953 | if (have_bnum) | |
3954 | warning ("Breakpoint %d address previously adjusted from %s to %s.", | |
3955 | bnum, astr1, astr2); | |
3956 | else | |
3957 | warning ("Breakpoint address adjusted from %s to %s.", astr1, astr2); | |
3958 | } | |
3959 | ||
3960 | /* Adjust a breakpoint's address to account for architectural constraints | |
3961 | on breakpoint placement. Return the adjusted address. Note: Very | |
3962 | few targets require this kind of adjustment. For most targets, | |
3963 | this function is simply the identity function. */ | |
3964 | ||
3965 | static CORE_ADDR | |
88f7da05 | 3966 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
3967 | { |
3968 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
3969 | { | |
3970 | /* Very few targets need any kind of breakpoint adjustment. */ | |
3971 | return bpaddr; | |
3972 | } | |
88f7da05 KB |
3973 | else if (bptype == bp_watchpoint |
3974 | || bptype == bp_hardware_watchpoint | |
3975 | || bptype == bp_read_watchpoint | |
3976 | || bptype == bp_access_watchpoint | |
3977 | || bptype == bp_catch_fork | |
3978 | || bptype == bp_catch_vfork | |
3979 | || bptype == bp_catch_exec) | |
3980 | { | |
3981 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
3982 | have their addresses modified. */ | |
3983 | return bpaddr; | |
3984 | } | |
76897487 KB |
3985 | else |
3986 | { | |
3987 | CORE_ADDR adjusted_bpaddr; | |
3988 | ||
3989 | /* Some targets have architectural constraints on the placement | |
3990 | of breakpoint instructions. Obtain the adjusted address. */ | |
3991 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
3992 | bpaddr); | |
3993 | ||
3994 | /* An adjusted breakpoint address can significantly alter | |
3995 | a user's expectations. Print a warning if an adjustment | |
3996 | is required. */ | |
3997 | if (adjusted_bpaddr != bpaddr) | |
3998 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
3999 | ||
4000 | return adjusted_bpaddr; | |
4001 | } | |
4002 | } | |
4003 | ||
7cc221ef DJ |
4004 | /* Allocate a struct bp_location. */ |
4005 | ||
26bb91f3 | 4006 | static struct bp_location * |
e049a4b5 | 4007 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4008 | { |
4009 | struct bp_location *loc, *loc_p; | |
4010 | ||
4011 | loc = xmalloc (sizeof (struct bp_location)); | |
4012 | memset (loc, 0, sizeof (*loc)); | |
4013 | ||
e049a4b5 DJ |
4014 | loc->owner = bpt; |
4015 | ||
4016 | switch (bp_type) | |
4017 | { | |
4018 | case bp_breakpoint: | |
4019 | case bp_until: | |
4020 | case bp_finish: | |
4021 | case bp_longjmp: | |
4022 | case bp_longjmp_resume: | |
4023 | case bp_step_resume: | |
4024 | case bp_through_sigtramp: | |
4025 | case bp_watchpoint_scope: | |
4026 | case bp_call_dummy: | |
4027 | case bp_shlib_event: | |
4028 | case bp_thread_event: | |
4029 | case bp_overlay_event: | |
4030 | case bp_catch_load: | |
4031 | case bp_catch_unload: | |
4032 | loc->loc_type = bp_loc_software_breakpoint; | |
4033 | break; | |
4034 | case bp_hardware_breakpoint: | |
4035 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4036 | break; | |
4037 | case bp_hardware_watchpoint: | |
4038 | case bp_read_watchpoint: | |
4039 | case bp_access_watchpoint: | |
4040 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4041 | break; | |
4042 | case bp_watchpoint: | |
4043 | case bp_catch_fork: | |
4044 | case bp_catch_vfork: | |
4045 | case bp_catch_exec: | |
4046 | case bp_catch_catch: | |
4047 | case bp_catch_throw: | |
4048 | loc->loc_type = bp_loc_other; | |
4049 | break; | |
4050 | default: | |
4051 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); | |
4052 | } | |
4053 | ||
7cc221ef DJ |
4054 | /* Add this breakpoint to the end of the chain. */ |
4055 | ||
4056 | loc_p = bp_location_chain; | |
4057 | if (loc_p == 0) | |
4058 | bp_location_chain = loc; | |
4059 | else | |
4060 | { | |
4061 | while (loc_p->next) | |
4062 | loc_p = loc_p->next; | |
4063 | loc_p->next = loc; | |
4064 | } | |
4065 | ||
4066 | return loc; | |
4067 | } | |
4068 | ||
4d28f7a8 KB |
4069 | /* set_raw_breakpoint() is a low level routine for allocating and |
4070 | partially initializing a breakpoint of type BPTYPE. The newly | |
4071 | created breakpoint's address, section, source file name, and line | |
4072 | number are provided by SAL. The newly created and partially | |
4073 | initialized breakpoint is added to the breakpoint chain and | |
4074 | is also returned as the value of this function. | |
c906108c | 4075 | |
4d28f7a8 KB |
4076 | It is expected that the caller will complete the initialization of |
4077 | the newly created breakpoint struct as well as output any status | |
4078 | information regarding the creation of a new breakpoint. In | |
4079 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4080 | number! Care should be taken to not allow an error() to occur | |
4081 | prior to completing the initialization of the breakpoint. If this | |
4082 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4083 | |
4084 | struct breakpoint * | |
4d28f7a8 | 4085 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4086 | { |
52f0bd74 | 4087 | struct breakpoint *b, *b1; |
c906108c SS |
4088 | |
4089 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4090 | memset (b, 0, sizeof (*b)); | |
e049a4b5 | 4091 | b->loc = allocate_bp_location (b, bptype); |
5cab636d | 4092 | b->loc->requested_address = sal.pc; |
88f7da05 KB |
4093 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4094 | bptype); | |
c906108c SS |
4095 | if (sal.symtab == NULL) |
4096 | b->source_file = NULL; | |
4097 | else | |
4098 | b->source_file = savestring (sal.symtab->filename, | |
4099 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4100 | b->loc->section = sal.section; |
4d28f7a8 | 4101 | b->type = bptype; |
c906108c SS |
4102 | b->language = current_language->la_language; |
4103 | b->input_radix = input_radix; | |
4104 | b->thread = -1; | |
4105 | b->line_number = sal.line; | |
b5de0fa7 | 4106 | b->enable_state = bp_enabled; |
c906108c SS |
4107 | b->next = 0; |
4108 | b->silent = 0; | |
4109 | b->ignore_count = 0; | |
4110 | b->commands = NULL; | |
818dd999 | 4111 | b->frame_id = null_frame_id; |
c906108c SS |
4112 | b->dll_pathname = NULL; |
4113 | b->triggered_dll_pathname = NULL; | |
4114 | b->forked_inferior_pid = 0; | |
4115 | b->exec_pathname = NULL; | |
3086aeae | 4116 | b->ops = NULL; |
0101ce28 | 4117 | b->pending = 0; |
c906108c SS |
4118 | |
4119 | /* Add this breakpoint to the end of the chain | |
4120 | so that a list of breakpoints will come out in order | |
4121 | of increasing numbers. */ | |
4122 | ||
4123 | b1 = breakpoint_chain; | |
4124 | if (b1 == 0) | |
4125 | breakpoint_chain = b; | |
4126 | else | |
4127 | { | |
4128 | while (b1->next) | |
4129 | b1 = b1->next; | |
4130 | b1->next = b; | |
4131 | } | |
4132 | ||
9f60f21b | 4133 | check_duplicates (b); |
c906108c SS |
4134 | breakpoints_changed (); |
4135 | ||
4136 | return b; | |
4137 | } | |
4138 | ||
c2c6d25f JM |
4139 | |
4140 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4141 | instruction, hard-wired into the inferior's code. */ | |
4142 | void | |
4143 | make_breakpoint_permanent (struct breakpoint *b) | |
4144 | { | |
b5de0fa7 | 4145 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4146 | |
4147 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4148 | b->loc->inserted = 1; |
c2c6d25f JM |
4149 | } |
4150 | ||
1900040c MS |
4151 | static struct breakpoint * |
4152 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4153 | { | |
4154 | static int internal_breakpoint_number = -1; | |
4155 | struct symtab_and_line sal; | |
4156 | struct breakpoint *b; | |
4157 | ||
fe39c653 | 4158 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4159 | |
4160 | sal.pc = address; | |
4161 | sal.section = find_pc_overlay (sal.pc); | |
4162 | ||
4163 | b = set_raw_breakpoint (sal, type); | |
4164 | b->number = internal_breakpoint_number--; | |
4165 | b->disposition = disp_donttouch; | |
4166 | ||
4167 | return b; | |
4168 | } | |
4169 | ||
c906108c SS |
4170 | |
4171 | static void | |
fba45db2 | 4172 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4173 | { |
c906108c | 4174 | struct breakpoint *b; |
1900040c | 4175 | struct minimal_symbol *m; |
c906108c | 4176 | |
1900040c MS |
4177 | if (func_name == NULL) |
4178 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4179 | else | |
c906108c | 4180 | { |
5520a790 | 4181 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4182 | return; |
1900040c MS |
4183 | |
4184 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4185 | } |
c906108c | 4186 | |
b5de0fa7 | 4187 | b->enable_state = bp_disabled; |
c906108c SS |
4188 | b->silent = 1; |
4189 | if (func_name) | |
4fcf66da | 4190 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4191 | } |
4192 | ||
53a5351d JM |
4193 | /* Call this routine when stepping and nexting to enable a breakpoint |
4194 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4195 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4196 | ||
4197 | void | |
fba45db2 | 4198 | enable_longjmp_breakpoint (void) |
c906108c | 4199 | { |
52f0bd74 | 4200 | struct breakpoint *b; |
c906108c SS |
4201 | |
4202 | ALL_BREAKPOINTS (b) | |
4203 | if (b->type == bp_longjmp) | |
c5aa993b | 4204 | { |
b5de0fa7 | 4205 | b->enable_state = bp_enabled; |
9f60f21b | 4206 | check_duplicates (b); |
c5aa993b | 4207 | } |
c906108c SS |
4208 | } |
4209 | ||
4210 | void | |
fba45db2 | 4211 | disable_longjmp_breakpoint (void) |
c906108c | 4212 | { |
52f0bd74 | 4213 | struct breakpoint *b; |
c906108c SS |
4214 | |
4215 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4216 | if (b->type == bp_longjmp |
c906108c | 4217 | || b->type == bp_longjmp_resume) |
c5aa993b | 4218 | { |
b5de0fa7 | 4219 | b->enable_state = bp_disabled; |
9f60f21b | 4220 | check_duplicates (b); |
c5aa993b | 4221 | } |
c906108c SS |
4222 | } |
4223 | ||
1900040c MS |
4224 | static void |
4225 | create_overlay_event_breakpoint (char *func_name) | |
4226 | { | |
4227 | struct breakpoint *b; | |
4228 | struct minimal_symbol *m; | |
4229 | ||
5520a790 | 4230 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4231 | return; |
4232 | ||
4233 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4234 | bp_overlay_event); | |
4235 | b->addr_string = xstrdup (func_name); | |
4236 | ||
4237 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4238 | { |
4239 | b->enable_state = bp_enabled; | |
4240 | overlay_events_enabled = 1; | |
4241 | } | |
1900040c | 4242 | else |
c02f5703 MS |
4243 | { |
4244 | b->enable_state = bp_disabled; | |
4245 | overlay_events_enabled = 0; | |
4246 | } | |
1900040c MS |
4247 | } |
4248 | ||
4249 | void | |
4250 | enable_overlay_breakpoints (void) | |
4251 | { | |
52f0bd74 | 4252 | struct breakpoint *b; |
1900040c MS |
4253 | |
4254 | ALL_BREAKPOINTS (b) | |
4255 | if (b->type == bp_overlay_event) | |
4256 | { | |
4257 | b->enable_state = bp_enabled; | |
4258 | check_duplicates (b); | |
c02f5703 | 4259 | overlay_events_enabled = 1; |
1900040c MS |
4260 | } |
4261 | } | |
4262 | ||
4263 | void | |
4264 | disable_overlay_breakpoints (void) | |
4265 | { | |
52f0bd74 | 4266 | struct breakpoint *b; |
1900040c MS |
4267 | |
4268 | ALL_BREAKPOINTS (b) | |
4269 | if (b->type == bp_overlay_event) | |
4270 | { | |
4271 | b->enable_state = bp_disabled; | |
4272 | check_duplicates (b); | |
c02f5703 | 4273 | overlay_events_enabled = 0; |
1900040c MS |
4274 | } |
4275 | } | |
4276 | ||
c4093a6a | 4277 | struct breakpoint * |
fba45db2 | 4278 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4279 | { |
4280 | struct breakpoint *b; | |
c4093a6a | 4281 | |
1900040c | 4282 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4283 | |
b5de0fa7 | 4284 | b->enable_state = bp_enabled; |
c4093a6a | 4285 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5cab636d | 4286 | xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4287 | |
4288 | return b; | |
4289 | } | |
4290 | ||
4291 | void | |
4292 | remove_thread_event_breakpoints (void) | |
4293 | { | |
4294 | struct breakpoint *b, *temp; | |
4295 | ||
4296 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4297 | if (b->type == bp_thread_event) | |
4298 | delete_breakpoint (b); | |
4299 | } | |
4300 | ||
0101ce28 JJ |
4301 | struct captured_parse_breakpoint_args |
4302 | { | |
4303 | char **arg_p; | |
4304 | struct symtabs_and_lines *sals_p; | |
4305 | char ***addr_string_p; | |
4306 | int *not_found_ptr; | |
4307 | }; | |
4308 | ||
4309 | struct lang_and_radix | |
4310 | { | |
4311 | enum language lang; | |
4312 | int radix; | |
4313 | }; | |
4314 | ||
4315 | /* Cleanup helper routine to restore the current language and | |
4316 | input radix. */ | |
4317 | static void | |
4318 | do_restore_lang_radix_cleanup (void *old) | |
4319 | { | |
4320 | struct lang_and_radix *p = old; | |
4321 | set_language (p->lang); | |
4322 | input_radix = p->radix; | |
4323 | } | |
4324 | ||
4325 | /* Try and resolve a pending breakpoint. */ | |
4326 | static int | |
4327 | resolve_pending_breakpoint (struct breakpoint *b) | |
4328 | { | |
4329 | /* Try and reparse the breakpoint in case the shared library | |
4330 | is now loaded. */ | |
4331 | struct symtabs_and_lines sals; | |
4332 | struct symtab_and_line pending_sal; | |
4333 | char **cond_string = (char **) NULL; | |
4334 | char *copy_arg = b->addr_string; | |
4335 | char **addr_string; | |
4336 | char *errmsg; | |
4337 | int rc; | |
4338 | int not_found = 0; | |
4339 | struct ui_file *old_gdb_stderr; | |
4340 | struct lang_and_radix old_lr; | |
4341 | struct cleanup *old_chain; | |
4342 | ||
4343 | /* Set language, input-radix, then reissue breakpoint command. | |
4344 | Ensure the language and input-radix are restored afterwards. */ | |
4345 | old_lr.lang = current_language->la_language; | |
4346 | old_lr.radix = input_radix; | |
4347 | old_chain = make_cleanup (do_restore_lang_radix_cleanup, &old_lr); | |
4348 | ||
4349 | set_language (b->language); | |
4350 | input_radix = b->input_radix; | |
4351 | rc = break_command_1 (b->addr_string, b->flag, b->from_tty, b); | |
4352 | ||
4353 | if (rc == GDB_RC_OK) | |
4354 | /* Pending breakpoint has been resolved. */ | |
4355 | printf_filtered ("Pending breakpoint \"%s\" resolved\n", b->addr_string); | |
4356 | ||
4357 | do_cleanups (old_chain); | |
4358 | return rc; | |
4359 | } | |
4360 | ||
cae688ec JJ |
4361 | #ifdef SOLIB_ADD |
4362 | void | |
4363 | remove_solib_event_breakpoints (void) | |
4364 | { | |
4365 | struct breakpoint *b, *temp; | |
4366 | ||
4367 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4368 | if (b->type == bp_shlib_event) | |
4369 | delete_breakpoint (b); | |
4370 | } | |
4371 | ||
4372 | struct breakpoint * | |
4373 | create_solib_event_breakpoint (CORE_ADDR address) | |
4374 | { | |
4375 | struct breakpoint *b; | |
4376 | ||
4377 | b = create_internal_breakpoint (address, bp_shlib_event); | |
4378 | return b; | |
4379 | } | |
4380 | ||
4381 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4382 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4383 | ||
4384 | void | |
4385 | disable_breakpoints_in_shlibs (int silent) | |
4386 | { | |
4387 | struct breakpoint *b; | |
4388 | int disabled_shlib_breaks = 0; | |
4389 | ||
4390 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4391 | ALL_BREAKPOINTS (b) | |
4392 | { | |
4393 | #if defined (PC_SOLIB) | |
4394 | if (((b->type == bp_breakpoint) || | |
4395 | (b->type == bp_hardware_breakpoint)) && | |
4396 | breakpoint_enabled (b) && | |
4397 | !b->loc->duplicate && | |
4398 | PC_SOLIB (b->loc->address)) | |
4399 | { | |
4400 | b->enable_state = bp_shlib_disabled; | |
4401 | if (!silent) | |
4402 | { | |
4403 | if (!disabled_shlib_breaks) | |
4404 | { | |
4405 | target_terminal_ours_for_output (); | |
4406 | warning ("Temporarily disabling shared library breakpoints:"); | |
4407 | } | |
4408 | disabled_shlib_breaks = 1; | |
4409 | warning ("breakpoint #%d ", b->number); | |
4410 | } | |
4411 | } | |
4412 | #endif | |
4413 | } | |
4414 | } | |
4415 | ||
c906108c SS |
4416 | /* Try to reenable any breakpoints in shared libraries. */ |
4417 | void | |
fba45db2 | 4418 | re_enable_breakpoints_in_shlibs (void) |
c906108c | 4419 | { |
0101ce28 | 4420 | struct breakpoint *b, *tmp; |
c906108c | 4421 | |
0101ce28 JJ |
4422 | ALL_BREAKPOINTS_SAFE (b, tmp) |
4423 | { | |
b5de0fa7 | 4424 | if (b->enable_state == bp_shlib_disabled) |
0101ce28 JJ |
4425 | { |
4426 | char buf[1], *lib; | |
4427 | ||
4428 | /* Do not reenable the breakpoint if the shared library | |
4429 | is still not mapped in. */ | |
4430 | lib = PC_SOLIB (b->loc->address); | |
4431 | if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0) | |
4432 | b->enable_state = bp_enabled; | |
4433 | } | |
4434 | else if (b->pending && (b->enable_state == bp_enabled)) | |
4435 | { | |
4436 | if (resolve_pending_breakpoint (b) == GDB_RC_OK) | |
4437 | delete_breakpoint (b); | |
4438 | } | |
4439 | } | |
c906108c SS |
4440 | } |
4441 | ||
4442 | #endif | |
4443 | ||
4444 | static void | |
fba45db2 KB |
4445 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4446 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4447 | { |
c5aa993b | 4448 | struct breakpoint *b; |
c906108c | 4449 | struct symtabs_and_lines sals; |
c5aa993b JM |
4450 | struct cleanup *old_chain; |
4451 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4452 | char *addr_start = hookname; |
4453 | char *addr_end = NULL; | |
4454 | char **canonical = (char **) NULL; | |
4455 | int thread = -1; /* All threads. */ | |
4456 | ||
c906108c | 4457 | /* Set a breakpoint on the specified hook. */ |
68219205 | 4458 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical, NULL); |
c906108c | 4459 | addr_end = hookname; |
c5aa993b | 4460 | |
c906108c SS |
4461 | if (sals.nelts == 0) |
4462 | { | |
4463 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4464 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4465 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4466 | return; | |
4467 | } | |
4468 | if (sals.nelts != 1) | |
4469 | { | |
53a5351d | 4470 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4471 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4472 | return; | |
4473 | } | |
4474 | ||
53a5351d JM |
4475 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4476 | in case the following errors out. */ | |
b8c9b27d | 4477 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4478 | if (canonical != (char **) NULL) |
c906108c | 4479 | { |
b8c9b27d | 4480 | make_cleanup (xfree, canonical); |
c906108c SS |
4481 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4482 | if (canonical[0] != NULL) | |
b8c9b27d | 4483 | make_cleanup (xfree, canonical[0]); |
c906108c | 4484 | } |
c5aa993b | 4485 | |
c906108c | 4486 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4487 | |
c906108c | 4488 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4489 | if (canonical != (char **) NULL) |
c906108c | 4490 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4491 | |
4d28f7a8 | 4492 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4493 | set_breakpoint_count (breakpoint_count + 1); |
4494 | b->number = breakpoint_count; | |
4495 | b->cond = NULL; | |
53a5351d JM |
4496 | b->cond_string = (cond_string == NULL) ? |
4497 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4498 | b->thread = thread; |
c5aa993b JM |
4499 | |
4500 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4501 | b->addr_string = canonical[0]; |
4502 | else if (addr_start) | |
4503 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4504 | |
b5de0fa7 EZ |
4505 | b->enable_state = bp_enabled; |
4506 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4507 | |
c906108c SS |
4508 | if (dll_pathname == NULL) |
4509 | b->dll_pathname = NULL; | |
4510 | else | |
4511 | { | |
4512 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4513 | strcpy (b->dll_pathname, dll_pathname); | |
4514 | } | |
c5aa993b | 4515 | |
c906108c SS |
4516 | mention (b); |
4517 | do_cleanups (old_chain); | |
4518 | } | |
4519 | ||
4520 | void | |
fba45db2 KB |
4521 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4522 | char *dll_pathname, char *cond_string) | |
c906108c | 4523 | { |
53a5351d JM |
4524 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4525 | cond_string, bp_catch_load); | |
c906108c SS |
4526 | } |
4527 | ||
4528 | void | |
fba45db2 KB |
4529 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4530 | char *dll_pathname, char *cond_string) | |
c906108c | 4531 | { |
53a5351d JM |
4532 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4533 | cond_string, bp_catch_unload); | |
c906108c SS |
4534 | } |
4535 | ||
4536 | static void | |
fba45db2 KB |
4537 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4538 | enum bptype bp_kind) | |
c906108c | 4539 | { |
c5aa993b JM |
4540 | struct symtab_and_line sal; |
4541 | struct breakpoint *b; | |
4542 | int thread = -1; /* All threads. */ | |
4543 | ||
fe39c653 | 4544 | init_sal (&sal); |
c906108c SS |
4545 | sal.pc = 0; |
4546 | sal.symtab = NULL; | |
4547 | sal.line = 0; | |
c5aa993b | 4548 | |
4d28f7a8 | 4549 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4550 | set_breakpoint_count (breakpoint_count + 1); |
4551 | b->number = breakpoint_count; | |
4552 | b->cond = NULL; | |
53a5351d JM |
4553 | b->cond_string = (cond_string == NULL) ? |
4554 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4555 | b->thread = thread; |
4556 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4557 | b->enable_state = bp_enabled; |
4558 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4559 | b->forked_inferior_pid = 0; |
c5aa993b | 4560 | |
c906108c SS |
4561 | mention (b); |
4562 | } | |
4563 | ||
4564 | void | |
fba45db2 | 4565 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4566 | { |
4567 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4568 | } | |
c5aa993b | 4569 | |
c906108c | 4570 | void |
fba45db2 | 4571 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4572 | { |
4573 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4574 | } | |
4575 | ||
4576 | void | |
fba45db2 | 4577 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4578 | { |
c5aa993b JM |
4579 | struct symtab_and_line sal; |
4580 | struct breakpoint *b; | |
4581 | int thread = -1; /* All threads. */ | |
c906108c | 4582 | |
fe39c653 | 4583 | init_sal (&sal); |
c906108c SS |
4584 | sal.pc = 0; |
4585 | sal.symtab = NULL; | |
4586 | sal.line = 0; | |
4587 | ||
4d28f7a8 | 4588 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4589 | set_breakpoint_count (breakpoint_count + 1); |
4590 | b->number = breakpoint_count; | |
4591 | b->cond = NULL; | |
53a5351d JM |
4592 | b->cond_string = (cond_string == NULL) ? |
4593 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4594 | b->thread = thread; |
4595 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4596 | b->enable_state = bp_enabled; |
4597 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4598 | |
c906108c SS |
4599 | mention (b); |
4600 | } | |
4601 | ||
4602 | static int | |
fba45db2 | 4603 | hw_breakpoint_used_count (void) |
c906108c | 4604 | { |
52f0bd74 | 4605 | struct breakpoint *b; |
c906108c SS |
4606 | int i = 0; |
4607 | ||
4608 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4609 | { |
b5de0fa7 | 4610 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4611 | i++; |
4612 | } | |
c906108c SS |
4613 | |
4614 | return i; | |
4615 | } | |
4616 | ||
4617 | static int | |
fba45db2 | 4618 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4619 | { |
52f0bd74 | 4620 | struct breakpoint *b; |
c906108c SS |
4621 | int i = 0; |
4622 | ||
4623 | *other_type_used = 0; | |
4624 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4625 | { |
468d015d | 4626 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4627 | { |
4628 | if (b->type == type) | |
4629 | i++; | |
4630 | else if ((b->type == bp_hardware_watchpoint || | |
4631 | b->type == bp_read_watchpoint || | |
468d015d | 4632 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4633 | *other_type_used = 1; |
4634 | } | |
4635 | } | |
c906108c SS |
4636 | return i; |
4637 | } | |
4638 | ||
53a5351d JM |
4639 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4640 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4641 | |
53a5351d JM |
4642 | FIXME - This ought to be done by setting a temporary breakpoint |
4643 | that gets deleted automatically... */ | |
c906108c SS |
4644 | |
4645 | void | |
818dd999 | 4646 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4647 | { |
52f0bd74 | 4648 | struct breakpoint *b; |
c906108c SS |
4649 | |
4650 | ALL_BREAKPOINTS (b) | |
4651 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4652 | { |
5cab636d | 4653 | b->loc->requested_address = pc; |
88f7da05 KB |
4654 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4655 | b->type); | |
b5de0fa7 | 4656 | b->enable_state = bp_enabled; |
818dd999 | 4657 | b->frame_id = frame_id; |
9f60f21b | 4658 | check_duplicates (b); |
c5aa993b JM |
4659 | return; |
4660 | } | |
c906108c SS |
4661 | } |
4662 | ||
4663 | void | |
fba45db2 | 4664 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4665 | { |
c5aa993b | 4666 | struct breakpoint *b; |
c906108c SS |
4667 | |
4668 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4669 | { |
4670 | if (((b->type == bp_watchpoint) | |
4671 | || (b->type == bp_hardware_watchpoint) | |
4672 | || (b->type == bp_read_watchpoint) | |
4673 | || (b->type == bp_access_watchpoint) | |
4674 | || ep_is_exception_catchpoint (b)) | |
468d015d | 4675 | && breakpoint_enabled (b)) |
c5aa993b | 4676 | { |
b5de0fa7 | 4677 | b->enable_state = bp_call_disabled; |
9f60f21b | 4678 | check_duplicates (b); |
c5aa993b JM |
4679 | } |
4680 | } | |
c906108c SS |
4681 | } |
4682 | ||
4683 | void | |
fba45db2 | 4684 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4685 | { |
c5aa993b | 4686 | struct breakpoint *b; |
c906108c SS |
4687 | |
4688 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4689 | { |
4690 | if (((b->type == bp_watchpoint) | |
4691 | || (b->type == bp_hardware_watchpoint) | |
4692 | || (b->type == bp_read_watchpoint) | |
4693 | || (b->type == bp_access_watchpoint) | |
4694 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4695 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4696 | { |
b5de0fa7 | 4697 | b->enable_state = bp_enabled; |
9f60f21b | 4698 | check_duplicates (b); |
c5aa993b JM |
4699 | } |
4700 | } | |
c906108c SS |
4701 | } |
4702 | ||
4703 | ||
4704 | /* Set a breakpoint that will evaporate an end of command | |
4705 | at address specified by SAL. | |
4706 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4707 | ||
4708 | struct breakpoint * | |
818dd999 | 4709 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4710 | enum bptype type) |
c906108c | 4711 | { |
52f0bd74 | 4712 | struct breakpoint *b; |
4d28f7a8 | 4713 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4714 | b->enable_state = bp_enabled; |
4715 | b->disposition = disp_donttouch; | |
818dd999 | 4716 | b->frame_id = frame_id; |
c906108c SS |
4717 | |
4718 | /* If we're debugging a multi-threaded program, then we | |
4719 | want momentary breakpoints to be active in only a | |
4720 | single thread of control. */ | |
39f77062 KB |
4721 | if (in_thread_list (inferior_ptid)) |
4722 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4723 | |
4724 | return b; | |
4725 | } | |
c906108c | 4726 | \f |
c5aa993b | 4727 | |
c906108c SS |
4728 | /* Tell the user we have just set a breakpoint B. */ |
4729 | ||
4730 | static void | |
fba45db2 | 4731 | mention (struct breakpoint *b) |
c906108c SS |
4732 | { |
4733 | int say_where = 0; | |
3b31d625 | 4734 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4735 | struct ui_stream *stb; |
4736 | ||
4737 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4738 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4739 | |
9a4105ab AC |
4740 | /* FIXME: This is misplaced; mention() is called by things (like |
4741 | hitting a watchpoint) other than breakpoint creation. It should | |
4742 | be possible to clean this up and at the same time replace the | |
4743 | random calls to breakpoint_changed with this hook, as has already | |
4744 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4745 | if (deprecated_create_breakpoint_hook) | |
4746 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4747 | breakpoint_create_event (b->number); |
c906108c | 4748 | |
3086aeae DJ |
4749 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4750 | b->ops->print_mention (b); | |
4751 | else | |
4752 | switch (b->type) | |
4753 | { | |
4754 | case bp_none: | |
4755 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4756 | break; | |
4757 | case bp_watchpoint: | |
4758 | ui_out_text (uiout, "Watchpoint "); | |
4759 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4760 | ui_out_field_int (uiout, "number", b->number); | |
4761 | ui_out_text (uiout, ": "); | |
4762 | print_expression (b->exp, stb->stream); | |
4763 | ui_out_field_stream (uiout, "exp", stb); | |
4764 | do_cleanups (ui_out_chain); | |
4765 | break; | |
4766 | case bp_hardware_watchpoint: | |
4767 | ui_out_text (uiout, "Hardware watchpoint "); | |
4768 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4769 | ui_out_field_int (uiout, "number", b->number); | |
4770 | ui_out_text (uiout, ": "); | |
4771 | print_expression (b->exp, stb->stream); | |
4772 | ui_out_field_stream (uiout, "exp", stb); | |
4773 | do_cleanups (ui_out_chain); | |
4774 | break; | |
4775 | case bp_read_watchpoint: | |
4776 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4777 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4778 | ui_out_field_int (uiout, "number", b->number); | |
4779 | ui_out_text (uiout, ": "); | |
4780 | print_expression (b->exp, stb->stream); | |
4781 | ui_out_field_stream (uiout, "exp", stb); | |
4782 | do_cleanups (ui_out_chain); | |
4783 | break; | |
4784 | case bp_access_watchpoint: | |
4785 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4786 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4787 | ui_out_field_int (uiout, "number", b->number); | |
4788 | ui_out_text (uiout, ": "); | |
4789 | print_expression (b->exp, stb->stream); | |
4790 | ui_out_field_stream (uiout, "exp", stb); | |
4791 | do_cleanups (ui_out_chain); | |
4792 | break; | |
4793 | case bp_breakpoint: | |
4794 | if (ui_out_is_mi_like_p (uiout)) | |
4795 | { | |
4796 | say_where = 0; | |
4797 | break; | |
4798 | } | |
4799 | printf_filtered ("Breakpoint %d", b->number); | |
4800 | say_where = 1; | |
4801 | break; | |
4802 | case bp_hardware_breakpoint: | |
4803 | if (ui_out_is_mi_like_p (uiout)) | |
4804 | { | |
4805 | say_where = 0; | |
4806 | break; | |
4807 | } | |
4808 | printf_filtered ("Hardware assisted breakpoint %d", b->number); | |
4809 | say_where = 1; | |
4810 | break; | |
4811 | case bp_catch_load: | |
4812 | case bp_catch_unload: | |
4813 | printf_filtered ("Catchpoint %d (%s %s)", | |
4814 | b->number, | |
4815 | (b->type == bp_catch_load) ? "load" : "unload", | |
4816 | (b->dll_pathname != NULL) ? | |
4817 | b->dll_pathname : "<any library>"); | |
4818 | break; | |
4819 | case bp_catch_fork: | |
4820 | case bp_catch_vfork: | |
4821 | printf_filtered ("Catchpoint %d (%s)", | |
4822 | b->number, | |
4823 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4824 | break; | |
4825 | case bp_catch_exec: | |
4826 | printf_filtered ("Catchpoint %d (exec)", | |
4827 | b->number); | |
4828 | break; | |
4829 | case bp_catch_catch: | |
4830 | case bp_catch_throw: | |
4831 | printf_filtered ("Catchpoint %d (%s)", | |
4832 | b->number, | |
4833 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
4834 | break; | |
4835 | ||
4836 | case bp_until: | |
4837 | case bp_finish: | |
4838 | case bp_longjmp: | |
4839 | case bp_longjmp_resume: | |
4840 | case bp_step_resume: | |
4841 | case bp_through_sigtramp: | |
4842 | case bp_call_dummy: | |
4843 | case bp_watchpoint_scope: | |
4844 | case bp_shlib_event: | |
4845 | case bp_thread_event: | |
4846 | case bp_overlay_event: | |
4847 | break; | |
4848 | } | |
c906108c | 4849 | |
c906108c SS |
4850 | if (say_where) |
4851 | { | |
0101ce28 | 4852 | if (b->pending) |
c906108c | 4853 | { |
0101ce28 JJ |
4854 | printf_filtered (" (%s) pending.", b->addr_string); |
4855 | } | |
4856 | else | |
4857 | { | |
4858 | if (addressprint || b->source_file == NULL) | |
4859 | { | |
4860 | printf_filtered (" at "); | |
4861 | print_address_numeric (b->loc->address, 1, gdb_stdout); | |
4862 | } | |
4863 | if (b->source_file) | |
4864 | printf_filtered (": file %s, line %d.", | |
4865 | b->source_file, b->line_number); | |
c906108c | 4866 | } |
c906108c | 4867 | } |
8b93c638 | 4868 | do_cleanups (old_chain); |
9dc5e2a9 | 4869 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4870 | return; |
c906108c SS |
4871 | printf_filtered ("\n"); |
4872 | } | |
c906108c | 4873 | \f |
c5aa993b | 4874 | |
c3f6f71d JM |
4875 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4876 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4877 | COND[i] and COND_STRING[i] values. | |
4878 | ||
0101ce28 JJ |
4879 | The parameter PENDING_BP points to a pending breakpoint that is |
4880 | the basis of the breakpoints currently being created. The pending | |
4881 | breakpoint may contain a separate condition string or commands | |
4882 | that were added after the initial pending breakpoint was created. | |
4883 | ||
c3f6f71d JM |
4884 | NOTE: If the function succeeds, the caller is expected to cleanup |
4885 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4886 | array contents). If the function fails (error() is called), the | |
4887 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4888 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4889 | |
4890 | static void | |
c3f6f71d JM |
4891 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4892 | struct expression **cond, char **cond_string, | |
4893 | enum bptype type, enum bpdisp disposition, | |
0101ce28 JJ |
4894 | int thread, int ignore_count, int from_tty, |
4895 | struct breakpoint *pending_bp) | |
c906108c | 4896 | { |
c3f6f71d JM |
4897 | if (type == bp_hardware_breakpoint) |
4898 | { | |
4899 | int i = hw_breakpoint_used_count (); | |
4900 | int target_resources_ok = | |
4901 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4902 | i + sals.nelts, 0); | |
4903 | if (target_resources_ok == 0) | |
4904 | error ("No hardware breakpoint support in the target."); | |
4905 | else if (target_resources_ok < 0) | |
4906 | error ("Hardware breakpoints used exceeds limit."); | |
4907 | } | |
c906108c | 4908 | |
c3f6f71d JM |
4909 | /* Now set all the breakpoints. */ |
4910 | { | |
4911 | int i; | |
4912 | for (i = 0; i < sals.nelts; i++) | |
4913 | { | |
4914 | struct breakpoint *b; | |
4915 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4916 | |
c3f6f71d JM |
4917 | if (from_tty) |
4918 | describe_other_breakpoints (sal.pc, sal.section); | |
4919 | ||
4d28f7a8 | 4920 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4921 | set_breakpoint_count (breakpoint_count + 1); |
4922 | b->number = breakpoint_count; | |
c3f6f71d JM |
4923 | b->cond = cond[i]; |
4924 | b->thread = thread; | |
d8ef46f5 DJ |
4925 | if (addr_string[i]) |
4926 | b->addr_string = addr_string[i]; | |
4927 | else | |
4928 | /* addr_string has to be used or breakpoint_re_set will delete | |
4929 | me. */ | |
5cab636d | 4930 | xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address)); |
c3f6f71d JM |
4931 | b->cond_string = cond_string[i]; |
4932 | b->ignore_count = ignore_count; | |
b5de0fa7 | 4933 | b->enable_state = bp_enabled; |
c3f6f71d | 4934 | b->disposition = disposition; |
0101ce28 JJ |
4935 | /* If resolving a pending breakpoint, a check must be made to see if |
4936 | the user has specified a new condition or commands for the | |
4937 | breakpoint. A new condition will override any condition that was | |
4938 | initially specified with the initial breakpoint command. */ | |
4939 | if (pending_bp) | |
4940 | { | |
4941 | char *arg; | |
4942 | if (pending_bp->cond_string) | |
4943 | { | |
4944 | arg = pending_bp->cond_string; | |
4945 | b->cond_string = savestring (arg, strlen (arg)); | |
4946 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
4947 | if (*arg) | |
4948 | error ("Junk at end of pending breakpoint condition expression"); | |
4949 | } | |
4950 | /* If there are commands associated with the breakpoint, they should | |
4951 | be copied too. */ | |
4952 | if (pending_bp->commands) | |
4953 | b->commands = copy_command_lines (pending_bp->commands); | |
4954 | } | |
c3f6f71d JM |
4955 | mention (b); |
4956 | } | |
4957 | } | |
4958 | } | |
c906108c | 4959 | |
c3f6f71d JM |
4960 | /* Parse ARG which is assumed to be a SAL specification possibly |
4961 | followed by conditionals. On return, SALS contains an array of SAL | |
4962 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4963 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4964 | |
b9362cc7 | 4965 | static void |
c3f6f71d JM |
4966 | parse_breakpoint_sals (char **address, |
4967 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
4968 | char ***addr_string, |
4969 | int *not_found_ptr) | |
c3f6f71d JM |
4970 | { |
4971 | char *addr_start = *address; | |
4972 | *addr_string = NULL; | |
4973 | /* If no arg given, or if first arg is 'if ', use the default | |
4974 | breakpoint. */ | |
4975 | if ((*address) == NULL | |
4976 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4977 | { |
4978 | if (default_breakpoint_valid) | |
4979 | { | |
c3f6f71d | 4980 | struct symtab_and_line sal; |
fe39c653 | 4981 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 4982 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
4983 | xmalloc (sizeof (struct symtab_and_line)); |
4984 | sal.pc = default_breakpoint_address; | |
4985 | sal.line = default_breakpoint_line; | |
4986 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4987 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4988 | sals->sals[0] = sal; |
4989 | sals->nelts = 1; | |
c906108c SS |
4990 | } |
4991 | else | |
4992 | error ("No default breakpoint address now."); | |
4993 | } | |
4994 | else | |
4995 | { | |
c906108c | 4996 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4997 | current_source_symtab (which is decode_line_1's default). This |
4998 | should produce the results we want almost all of the time while | |
1aeae86e AF |
4999 | leaving default_breakpoint_* alone. |
5000 | ObjC: However, don't match an Objective-C method name which | |
5001 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5002 | |
c214a6fd | 5003 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5004 | |
c906108c | 5005 | if (default_breakpoint_valid |
0378c332 | 5006 | && (!cursal.symtab |
1aeae86e AF |
5007 | || ((strchr ("+-", (*address)[0]) != NULL) |
5008 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5009 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5010 | default_breakpoint_line, addr_string, |
5011 | not_found_ptr); | |
c906108c | 5012 | else |
0101ce28 JJ |
5013 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5014 | addr_string, not_found_ptr); | |
c906108c | 5015 | } |
c3f6f71d JM |
5016 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5017 | if (sals->nelts > 0 && *addr_string == NULL) | |
5018 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5019 | if (addr_start != (*address)) | |
c906108c | 5020 | { |
c3f6f71d JM |
5021 | int i; |
5022 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5023 | { |
c3f6f71d JM |
5024 | /* Add the string if not present. */ |
5025 | if ((*addr_string)[i] == NULL) | |
5026 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5027 | } |
5028 | } | |
c3f6f71d | 5029 | } |
c906108c | 5030 | |
c906108c | 5031 | |
c3f6f71d JM |
5032 | /* Convert each SAL into a real PC. Verify that the PC can be |
5033 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5034 | |
b9362cc7 | 5035 | static void |
c3f6f71d JM |
5036 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5037 | char *address) | |
5038 | { | |
5039 | int i; | |
5040 | for (i = 0; i < sals->nelts; i++) | |
5041 | { | |
5042 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
5043 | |
5044 | /* It's possible for the PC to be nonzero, but still an illegal | |
5045 | value on some targets. | |
5046 | ||
5047 | For example, on HP-UX if you start gdb, and before running the | |
5048 | inferior you try to set a breakpoint on a shared library function | |
5049 | "foo" where the inferior doesn't call "foo" directly but does | |
5050 | pass its address to another function call, then we do find a | |
5051 | minimal symbol for the "foo", but it's address is invalid. | |
5052 | (Appears to be an index into a table that the loader sets up | |
5053 | when the inferior is run.) | |
5054 | ||
5055 | Give the target a chance to bless sals.sals[i].pc before we | |
5056 | try to make a breakpoint for it. */ | |
c3f6f71d | 5057 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 5058 | { |
c3f6f71d JM |
5059 | if (address == NULL) |
5060 | error ("Cannot break without a running program."); | |
5061 | else | |
5062 | error ("Cannot break on %s without a running program.", | |
5063 | address); | |
c5aa993b | 5064 | } |
c3f6f71d JM |
5065 | } |
5066 | } | |
5067 | ||
0101ce28 JJ |
5068 | static int |
5069 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) | |
5070 | { | |
5071 | struct captured_parse_breakpoint_args *args = data; | |
5072 | ||
5073 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5074 | args->not_found_ptr); | |
5075 | ||
5076 | return GDB_RC_OK; | |
5077 | } | |
5078 | ||
c3f6f71d JM |
5079 | /* Set a breakpoint according to ARG (function, linenum or *address) |
5080 | flag: first bit : 0 non-temporary, 1 temporary. | |
0101ce28 | 5081 | second bit : 0 normal breakpoint, 1 hardware breakpoint. |
c5aa993b | 5082 | |
0101ce28 JJ |
5083 | PENDING_BP is non-NULL when this function is being called to resolve |
5084 | a pending breakpoint. */ | |
5085 | ||
5086 | static int | |
5087 | break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp) | |
c3f6f71d JM |
5088 | { |
5089 | int tempflag, hardwareflag; | |
5090 | struct symtabs_and_lines sals; | |
52f0bd74 | 5091 | struct expression **cond = 0; |
0101ce28 | 5092 | struct symtab_and_line pending_sal; |
c3f6f71d | 5093 | char **cond_string = (char **) NULL; |
0101ce28 JJ |
5094 | char *copy_arg; |
5095 | char *err_msg; | |
c3f6f71d JM |
5096 | char *addr_start = arg; |
5097 | char **addr_string; | |
5098 | struct cleanup *old_chain; | |
5099 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 JJ |
5100 | struct captured_parse_breakpoint_args parse_args; |
5101 | int i, rc; | |
5102 | int pending = 0; | |
c3f6f71d JM |
5103 | int thread = -1; |
5104 | int ignore_count = 0; | |
0101ce28 | 5105 | int not_found = 0; |
c3f6f71d JM |
5106 | |
5107 | hardwareflag = flag & BP_HARDWAREFLAG; | |
5108 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 5109 | |
c3f6f71d JM |
5110 | sals.sals = NULL; |
5111 | sals.nelts = 0; | |
5112 | addr_string = NULL; | |
c3f6f71d | 5113 | |
0101ce28 JJ |
5114 | parse_args.arg_p = &arg; |
5115 | parse_args.sals_p = &sals; | |
5116 | parse_args.addr_string_p = &addr_string; | |
5117 | parse_args.not_found_ptr = ¬_found; | |
5118 | ||
5119 | rc = catch_exceptions_with_msg (uiout, do_captured_parse_breakpoint, | |
5120 | &parse_args, NULL, &err_msg, | |
5121 | RETURN_MASK_ALL); | |
5122 | ||
5123 | /* If caller is interested in rc value from parse, set value. */ | |
5124 | ||
5125 | if (rc != GDB_RC_OK) | |
5126 | { | |
5127 | /* Check for file or function not found. */ | |
5128 | if (not_found) | |
5129 | { | |
5130 | /* If called to resolve pending breakpoint, just return error code. */ | |
5131 | if (pending_bp) | |
5132 | return rc; | |
5133 | ||
5134 | error_output_message (NULL, err_msg); | |
5135 | xfree (err_msg); | |
fa8d40ab JJ |
5136 | |
5137 | /* If pending breakpoint support is turned off, throw error. */ | |
5138 | ||
5139 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
5140 | throw_exception (RETURN_ERROR); | |
5141 | ||
5142 | /* If pending breakpoint support is auto query and the user selects | |
5143 | no, then simply return the error code. */ | |
5144 | if (pending_break_support == AUTO_BOOLEAN_AUTO && | |
5145 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
0101ce28 | 5146 | return rc; |
fa8d40ab JJ |
5147 | |
5148 | /* At this point, either the user was queried about setting a | |
5149 | pending breakpoint and selected yes, or pending breakpoint | |
5150 | behavior is on and thus a pending breakpoint is defaulted | |
5151 | on behalf of the user. */ | |
0101ce28 JJ |
5152 | copy_arg = xstrdup (addr_start); |
5153 | addr_string = ©_arg; | |
5154 | sals.nelts = 1; | |
5155 | sals.sals = &pending_sal; | |
5156 | pending_sal.pc = 0; | |
5157 | pending = 1; | |
5158 | } | |
5159 | else | |
5160 | return rc; | |
5161 | } | |
5162 | else if (!sals.nelts) | |
5163 | return GDB_RC_FAIL; | |
c3f6f71d JM |
5164 | |
5165 | /* Create a chain of things that always need to be cleaned up. */ | |
5166 | old_chain = make_cleanup (null_cleanup, 0); | |
5167 | ||
0101ce28 JJ |
5168 | if (!pending) |
5169 | { | |
5170 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5171 | make_cleanup (xfree, sals.sals); | |
5172 | ||
5173 | /* Cleanup the addr_string array but not its contents. */ | |
5174 | make_cleanup (xfree, addr_string); | |
5175 | } | |
c3f6f71d JM |
5176 | |
5177 | /* Allocate space for all the cond expressions. */ | |
5178 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5179 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5180 | |
5181 | /* Allocate space for all the cond strings. */ | |
5182 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5183 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5184 | |
5185 | /* ----------------------------- SNIP ----------------------------- | |
5186 | Anything added to the cleanup chain beyond this point is assumed | |
5187 | to be part of a breakpoint. If the breakpoint create succeeds | |
5188 | then the memory is not reclaimed. */ | |
5189 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5190 | ||
5191 | /* Mark the contents of the addr_string for cleanup. These go on | |
5192 | the breakpoint_chain and only occure if the breakpoint create | |
5193 | fails. */ | |
5194 | for (i = 0; i < sals.nelts; i++) | |
5195 | { | |
5196 | if (addr_string[i] != NULL) | |
b8c9b27d | 5197 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5198 | } |
5199 | ||
5200 | /* Resolve all line numbers to PC's and verify that the addresses | |
5201 | are ok for the target. */ | |
0101ce28 JJ |
5202 | if (!pending) |
5203 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5204 | |
5205 | /* Verify that condition can be parsed, before setting any | |
5206 | breakpoints. Allocate a separate condition expression for each | |
5207 | breakpoint. */ | |
5208 | thread = -1; /* No specific thread yet */ | |
0101ce28 | 5209 | if (!pending) |
c3f6f71d | 5210 | { |
0101ce28 | 5211 | for (i = 0; i < sals.nelts; i++) |
c906108c | 5212 | { |
0101ce28 JJ |
5213 | char *tok = arg; |
5214 | while (tok && *tok) | |
c906108c | 5215 | { |
0101ce28 JJ |
5216 | char *end_tok; |
5217 | int toklen; | |
5218 | char *cond_start = NULL; | |
5219 | char *cond_end = NULL; | |
5220 | while (*tok == ' ' || *tok == '\t') | |
5221 | tok++; | |
5222 | ||
5223 | end_tok = tok; | |
5224 | ||
5225 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5226 | end_tok++; | |
5227 | ||
5228 | toklen = end_tok - tok; | |
5229 | ||
5230 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5231 | { | |
5232 | tok = cond_start = end_tok + 1; | |
5233 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), | |
5234 | 0); | |
5235 | make_cleanup (xfree, cond[i]); | |
5236 | cond_end = tok; | |
5237 | cond_string[i] = savestring (cond_start, | |
5238 | cond_end - cond_start); | |
5239 | make_cleanup (xfree, cond_string[i]); | |
5240 | } | |
5241 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5242 | { | |
5243 | char *tmptok; | |
5244 | ||
5245 | tok = end_tok + 1; | |
5246 | tmptok = tok; | |
5247 | thread = strtol (tok, &tok, 0); | |
5248 | if (tok == tmptok) | |
5249 | error ("Junk after thread keyword."); | |
5250 | if (!valid_thread_id (thread)) | |
5251 | error ("Unknown thread %d\n", thread); | |
5252 | } | |
5253 | else | |
5254 | error ("Junk at end of arguments."); | |
c906108c | 5255 | } |
c906108c | 5256 | } |
0101ce28 JJ |
5257 | create_breakpoints (sals, addr_string, cond, cond_string, |
5258 | hardwareflag ? bp_hardware_breakpoint | |
5259 | : bp_breakpoint, | |
5260 | tempflag ? disp_del : disp_donttouch, | |
5261 | thread, ignore_count, from_tty, | |
5262 | pending_bp); | |
c906108c | 5263 | } |
0101ce28 JJ |
5264 | else |
5265 | { | |
5266 | struct symtab_and_line sal; | |
5267 | struct breakpoint *b; | |
5268 | ||
5269 | sal.symtab = NULL; | |
5270 | sal.pc = 0; | |
5271 | ||
5272 | make_cleanup (xfree, copy_arg); | |
5273 | ||
5274 | b = set_raw_breakpoint (sal, hardwareflag ? bp_hardware_breakpoint | |
5275 | : bp_breakpoint); | |
5276 | set_breakpoint_count (breakpoint_count + 1); | |
5277 | b->number = breakpoint_count; | |
5278 | b->cond = *cond; | |
5279 | b->thread = thread; | |
5280 | b->addr_string = *addr_string; | |
5281 | b->cond_string = *cond_string; | |
5282 | b->ignore_count = ignore_count; | |
5283 | b->pending = 1; | |
5284 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
5285 | b->from_tty = from_tty; | |
5286 | b->flag = flag; | |
5287 | mention (b); | |
5288 | } | |
5289 | ||
c3f6f71d JM |
5290 | if (sals.nelts > 1) |
5291 | { | |
5292 | warning ("Multiple breakpoints were set."); | |
5293 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5294 | } |
c3f6f71d JM |
5295 | /* That's it. Discard the cleanups for data inserted into the |
5296 | breakpoint. */ | |
5297 | discard_cleanups (breakpoint_chain); | |
5298 | /* But cleanup everything else. */ | |
5299 | do_cleanups (old_chain); | |
0101ce28 JJ |
5300 | |
5301 | return GDB_RC_OK; | |
c3f6f71d | 5302 | } |
c906108c | 5303 | |
c3f6f71d JM |
5304 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5305 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5306 | |
c3f6f71d JM |
5307 | struct captured_breakpoint_args |
5308 | { | |
5309 | char *address; | |
5310 | char *condition; | |
5311 | int hardwareflag; | |
5312 | int tempflag; | |
5313 | int thread; | |
5314 | int ignore_count; | |
5315 | }; | |
5316 | ||
5317 | static int | |
5318 | do_captured_breakpoint (void *data) | |
5319 | { | |
5320 | struct captured_breakpoint_args *args = data; | |
5321 | struct symtabs_and_lines sals; | |
52f0bd74 | 5322 | struct expression **cond; |
c3f6f71d JM |
5323 | struct cleanup *old_chain; |
5324 | struct cleanup *breakpoint_chain = NULL; | |
5325 | int i; | |
5326 | char **addr_string; | |
5327 | char **cond_string; | |
5328 | ||
5329 | char *address_end; | |
5330 | ||
5331 | /* Parse the source and lines spec. Delay check that the expression | |
5332 | didn't contain trailing garbage until after cleanups are in | |
5333 | place. */ | |
5334 | sals.sals = NULL; | |
5335 | sals.nelts = 0; | |
5336 | address_end = args->address; | |
5337 | addr_string = NULL; | |
0101ce28 | 5338 | parse_breakpoint_sals (&address_end, &sals, &addr_string, 0); |
c3f6f71d JM |
5339 | |
5340 | if (!sals.nelts) | |
5341 | return GDB_RC_NONE; | |
5342 | ||
5343 | /* Create a chain of things at always need to be cleaned up. */ | |
5344 | old_chain = make_cleanup (null_cleanup, 0); | |
5345 | ||
5346 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5347 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5348 | |
5349 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5350 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5351 | |
5352 | /* Allocate space for all the cond expressions. */ | |
5353 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5354 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5355 | |
5356 | /* Allocate space for all the cond strings. */ | |
5357 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5358 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5359 | |
5360 | /* ----------------------------- SNIP ----------------------------- | |
5361 | Anything added to the cleanup chain beyond this point is assumed | |
5362 | to be part of a breakpoint. If the breakpoint create goes | |
5363 | through then that memory is not cleaned up. */ | |
5364 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5365 | ||
5366 | /* Mark the contents of the addr_string for cleanup. These go on | |
5367 | the breakpoint_chain and only occure if the breakpoint create | |
5368 | fails. */ | |
c906108c SS |
5369 | for (i = 0; i < sals.nelts; i++) |
5370 | { | |
c3f6f71d | 5371 | if (addr_string[i] != NULL) |
b8c9b27d | 5372 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5373 | } |
5374 | ||
c3f6f71d JM |
5375 | /* Wait until now before checking for garbage at the end of the |
5376 | address. That way cleanups can take care of freeing any | |
5377 | memory. */ | |
5378 | if (*address_end != '\0') | |
5379 | error ("Garbage %s following breakpoint address", address_end); | |
5380 | ||
5381 | /* Resolve all line numbers to PC's. */ | |
5382 | breakpoint_sals_to_pc (&sals, args->address); | |
5383 | ||
5384 | /* Verify that conditions can be parsed, before setting any | |
5385 | breakpoints. */ | |
5386 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5387 | { |
c3f6f71d JM |
5388 | if (args->condition != NULL) |
5389 | { | |
5390 | char *tok = args->condition; | |
5391 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5392 | if (*tok != '\0') | |
5393 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 5394 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5395 | cond_string[i] = xstrdup (args->condition); |
5396 | } | |
c906108c | 5397 | } |
c3f6f71d JM |
5398 | |
5399 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5400 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5401 | args->tempflag ? disp_del : disp_donttouch, |
0101ce28 JJ |
5402 | args->thread, args->ignore_count, 0/*from-tty*/, |
5403 | NULL/*pending_bp*/); | |
c3f6f71d JM |
5404 | |
5405 | /* That's it. Discard the cleanups for data inserted into the | |
5406 | breakpoint. */ | |
5407 | discard_cleanups (breakpoint_chain); | |
5408 | /* But cleanup everything else. */ | |
c906108c | 5409 | do_cleanups (old_chain); |
c3f6f71d | 5410 | return GDB_RC_OK; |
c906108c SS |
5411 | } |
5412 | ||
c3f6f71d JM |
5413 | enum gdb_rc |
5414 | gdb_breakpoint (char *address, char *condition, | |
5415 | int hardwareflag, int tempflag, | |
5416 | int thread, int ignore_count) | |
5417 | { | |
5418 | struct captured_breakpoint_args args; | |
5419 | args.address = address; | |
5420 | args.condition = condition; | |
5421 | args.hardwareflag = hardwareflag; | |
5422 | args.tempflag = tempflag; | |
5423 | args.thread = thread; | |
5424 | args.ignore_count = ignore_count; | |
5425 | return catch_errors (do_captured_breakpoint, &args, | |
5426 | NULL, RETURN_MASK_ALL); | |
5427 | } | |
5428 | ||
5429 | ||
c906108c | 5430 | static void |
fba45db2 | 5431 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5432 | { |
5433 | struct frame_info *frame; | |
5434 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
5435 | char *extra_args = NULL; |
5436 | char *level_arg; | |
c906108c SS |
5437 | int extra_args_len = 0, if_arg = 0; |
5438 | ||
5439 | if (!arg || | |
5440 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5441 | { | |
5442 | ||
5443 | if (default_breakpoint_valid) | |
5444 | { | |
6e7f8b9c | 5445 | if (deprecated_selected_frame) |
c906108c | 5446 | { |
bdd78e62 | 5447 | selected_pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
5448 | if (arg) |
5449 | if_arg = 1; | |
5450 | } | |
5451 | else | |
5452 | error ("No selected frame."); | |
5453 | } | |
5454 | else | |
5455 | error ("No default breakpoint address now."); | |
5456 | } | |
5457 | else | |
5458 | { | |
5459 | extra_args = strchr (arg, ' '); | |
5460 | if (extra_args) | |
5461 | { | |
5462 | extra_args++; | |
5463 | extra_args_len = strlen (extra_args); | |
5464 | level_arg = (char *) xmalloc (extra_args - arg); | |
5465 | strncpy (level_arg, arg, extra_args - arg - 1); | |
5466 | level_arg[extra_args - arg - 1] = '\0'; | |
5467 | } | |
5468 | else | |
5469 | { | |
5470 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
5471 | strcpy (level_arg, arg); | |
5472 | } | |
5473 | ||
5474 | frame = parse_frame_specification (level_arg); | |
5475 | if (frame) | |
bdd78e62 | 5476 | selected_pc = get_frame_pc (frame); |
c906108c SS |
5477 | else |
5478 | selected_pc = 0; | |
5479 | } | |
5480 | if (if_arg) | |
5481 | { | |
5482 | extra_args = arg; | |
c5aa993b | 5483 | extra_args_len = strlen (arg); |
c906108c SS |
5484 | } |
5485 | ||
5486 | if (selected_pc) | |
5487 | { | |
c5aa993b | 5488 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c | 5489 | { |
9ebf4acf | 5490 | char *addr_string; |
c906108c | 5491 | if (extra_args_len) |
9ebf4acf | 5492 | addr_string = xstrprintf ("*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5493 | else |
9ebf4acf | 5494 | addr_string = xstrprintf ("*0x%s", paddr_nz (high)); |
0101ce28 | 5495 | break_command_1 (addr_string, flag, from_tty, NULL); |
b8c9b27d | 5496 | xfree (addr_string); |
c906108c SS |
5497 | } |
5498 | else | |
5499 | error ("No function contains the specified address"); | |
5500 | } | |
5501 | else | |
5502 | error ("Unable to set breakpoint at procedure exit"); | |
5503 | } | |
5504 | ||
5505 | ||
5506 | static void | |
fba45db2 | 5507 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5508 | { |
5509 | char *addr_string, *break_string, *beg_addr_string; | |
5510 | CORE_ADDR low, high; | |
5511 | struct symtabs_and_lines sals; | |
5512 | struct symtab_and_line sal; | |
5513 | struct cleanup *old_chain; | |
7f7e9482 | 5514 | char *extra_args = NULL; |
c906108c SS |
5515 | int extra_args_len = 0; |
5516 | int i, if_arg = 0; | |
5517 | ||
5518 | if (!arg || | |
5519 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5520 | { | |
5521 | if (default_breakpoint_valid) | |
5522 | { | |
6e7f8b9c | 5523 | if (deprecated_selected_frame) |
c906108c | 5524 | { |
9ebf4acf AC |
5525 | addr_string = xstrprintf ("*0x%s", |
5526 | paddr_nz (get_frame_pc (deprecated_selected_frame))); | |
c906108c SS |
5527 | if (arg) |
5528 | if_arg = 1; | |
5529 | } | |
5530 | else | |
5531 | error ("No selected frame."); | |
5532 | } | |
5533 | else | |
5534 | error ("No default breakpoint address now."); | |
5535 | } | |
5536 | else | |
5537 | { | |
5538 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5539 | strcpy (addr_string, arg); | |
5540 | } | |
5541 | ||
5542 | if (if_arg) | |
5543 | { | |
5544 | extra_args = arg; | |
c5aa993b JM |
5545 | extra_args_len = strlen (arg); |
5546 | } | |
5547 | else if (arg) | |
5548 | { | |
5549 | /* get the stuff after the function name or address */ | |
5550 | extra_args = strchr (arg, ' '); | |
5551 | if (extra_args) | |
5552 | { | |
5553 | extra_args++; | |
5554 | extra_args_len = strlen (extra_args); | |
5555 | } | |
c906108c | 5556 | } |
c906108c SS |
5557 | |
5558 | sals.sals = NULL; | |
5559 | sals.nelts = 0; | |
5560 | ||
c5aa993b JM |
5561 | beg_addr_string = addr_string; |
5562 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
68219205 | 5563 | (char ***) NULL, NULL); |
c906108c | 5564 | |
b8c9b27d KB |
5565 | xfree (beg_addr_string); |
5566 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
5567 | for (i = 0; (i < sals.nelts); i++) |
5568 | { | |
5569 | sal = sals.sals[i]; | |
c5aa993b | 5570 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c | 5571 | { |
9ebf4acf | 5572 | break_string; |
c906108c | 5573 | if (extra_args_len) |
9ebf4acf AC |
5574 | break_string = xstrprintf ("*0x%s %s", paddr_nz (high), |
5575 | extra_args); | |
c906108c | 5576 | else |
9ebf4acf | 5577 | break_string = xstrprintf ("*0x%s", paddr_nz (high)); |
0101ce28 | 5578 | break_command_1 (break_string, flag, from_tty, NULL); |
b8c9b27d | 5579 | xfree (break_string); |
c906108c SS |
5580 | } |
5581 | else | |
5582 | error ("No function contains the specified address"); | |
5583 | } | |
5584 | if (sals.nelts > 1) | |
5585 | { | |
53a5351d JM |
5586 | warning ("Multiple breakpoints were set.\n"); |
5587 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5588 | } |
c5aa993b | 5589 | do_cleanups (old_chain); |
c906108c SS |
5590 | } |
5591 | ||
5592 | ||
5593 | /* Helper function for break_command_1 and disassemble_command. */ | |
5594 | ||
5595 | void | |
fba45db2 | 5596 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5597 | { |
5598 | CORE_ADDR pc; | |
5599 | ||
5600 | if (sal->pc == 0 && sal->symtab != NULL) | |
5601 | { | |
5602 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5603 | error ("No line %d in file \"%s\".", | |
5604 | sal->line, sal->symtab->filename); | |
5605 | sal->pc = pc; | |
5606 | } | |
5607 | ||
5608 | if (sal->section == 0 && sal->symtab != NULL) | |
5609 | { | |
5610 | struct blockvector *bv; | |
c5aa993b JM |
5611 | struct block *b; |
5612 | struct symbol *sym; | |
5613 | int index; | |
c906108c | 5614 | |
c5aa993b | 5615 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5616 | if (bv != NULL) |
5617 | { | |
c5aa993b | 5618 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5619 | sym = block_function (b); |
5620 | if (sym != NULL) | |
5621 | { | |
5622 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5623 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5624 | } | |
5625 | else | |
5626 | { | |
5627 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5628 | have to look harder. This case can be executed if we have |
5629 | line numbers but no functions (as can happen in assembly | |
5630 | source). */ | |
c906108c | 5631 | |
c5aa993b | 5632 | struct minimal_symbol *msym; |
c906108c SS |
5633 | |
5634 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5635 | if (msym) | |
5636 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5637 | } | |
5638 | } | |
5639 | } | |
5640 | } | |
5641 | ||
5642 | void | |
fba45db2 | 5643 | break_command (char *arg, int from_tty) |
c906108c | 5644 | { |
0101ce28 | 5645 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5646 | } |
5647 | ||
502fd408 | 5648 | void |
fba45db2 | 5649 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5650 | { |
5651 | break_at_finish_command_1 (arg, 0, from_tty); | |
5652 | } | |
5653 | ||
502fd408 | 5654 | void |
fba45db2 | 5655 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5656 | { |
5657 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5658 | } | |
5659 | ||
5660 | void | |
fba45db2 | 5661 | tbreak_command (char *arg, int from_tty) |
c906108c | 5662 | { |
0101ce28 | 5663 | break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL); |
c906108c SS |
5664 | } |
5665 | ||
502fd408 | 5666 | void |
fba45db2 | 5667 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5668 | { |
5669 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5670 | } | |
5671 | ||
5672 | static void | |
fba45db2 | 5673 | hbreak_command (char *arg, int from_tty) |
c906108c | 5674 | { |
0101ce28 | 5675 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty, NULL); |
c906108c SS |
5676 | } |
5677 | ||
5678 | static void | |
fba45db2 | 5679 | thbreak_command (char *arg, int from_tty) |
c906108c | 5680 | { |
0101ce28 | 5681 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty, NULL); |
c906108c SS |
5682 | } |
5683 | ||
5684 | static void | |
fba45db2 | 5685 | stop_command (char *arg, int from_tty) |
c906108c SS |
5686 | { |
5687 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5688 | Usage: stop in <function | address>\n\ | |
5689 | stop at <line>\n"); | |
5690 | } | |
5691 | ||
5692 | static void | |
fba45db2 | 5693 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5694 | { |
5695 | int badInput = 0; | |
5696 | ||
c5aa993b | 5697 | if (arg == (char *) NULL) |
c906108c SS |
5698 | badInput = 1; |
5699 | else if (*arg != '*') | |
5700 | { | |
5701 | char *argptr = arg; | |
5702 | int hasColon = 0; | |
5703 | ||
53a5351d JM |
5704 | /* look for a ':'. If this is a line number specification, then |
5705 | say it is bad, otherwise, it should be an address or | |
5706 | function/method name */ | |
c906108c | 5707 | while (*argptr && !hasColon) |
c5aa993b JM |
5708 | { |
5709 | hasColon = (*argptr == ':'); | |
5710 | argptr++; | |
5711 | } | |
c906108c SS |
5712 | |
5713 | if (hasColon) | |
c5aa993b | 5714 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5715 | else |
c5aa993b | 5716 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5717 | } |
5718 | ||
5719 | if (badInput) | |
c5aa993b | 5720 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c | 5721 | else |
0101ce28 | 5722 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5723 | } |
5724 | ||
5725 | static void | |
fba45db2 | 5726 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5727 | { |
5728 | int badInput = 0; | |
5729 | ||
c5aa993b | 5730 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5731 | badInput = 1; |
5732 | else | |
5733 | { | |
5734 | char *argptr = arg; | |
5735 | int hasColon = 0; | |
5736 | ||
5737 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5738 | it is probably a line number. */ |
c906108c | 5739 | while (*argptr && !hasColon) |
c5aa993b JM |
5740 | { |
5741 | hasColon = (*argptr == ':'); | |
5742 | argptr++; | |
5743 | } | |
c906108c SS |
5744 | |
5745 | if (hasColon) | |
c5aa993b | 5746 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5747 | else |
c5aa993b | 5748 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5749 | } |
5750 | ||
5751 | if (badInput) | |
c5aa993b | 5752 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c | 5753 | else |
0101ce28 | 5754 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5755 | } |
5756 | ||
53a5351d JM |
5757 | /* accessflag: hw_write: watch write, |
5758 | hw_read: watch read, | |
5759 | hw_access: watch access (read or write) */ | |
c906108c | 5760 | static void |
fba45db2 | 5761 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5762 | { |
5763 | struct breakpoint *b; | |
5764 | struct symtab_and_line sal; | |
5765 | struct expression *exp; | |
5766 | struct block *exp_valid_block; | |
5767 | struct value *val, *mark; | |
5768 | struct frame_info *frame; | |
5769 | struct frame_info *prev_frame = NULL; | |
5770 | char *exp_start = NULL; | |
5771 | char *exp_end = NULL; | |
5772 | char *tok, *end_tok; | |
5773 | int toklen; | |
5774 | char *cond_start = NULL; | |
5775 | char *cond_end = NULL; | |
5776 | struct expression *cond = NULL; | |
5777 | int i, other_type_used, target_resources_ok = 0; | |
5778 | enum bptype bp_type; | |
5779 | int mem_cnt = 0; | |
5780 | ||
fe39c653 | 5781 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5782 | |
c906108c SS |
5783 | /* Parse arguments. */ |
5784 | innermost_block = NULL; | |
5785 | exp_start = arg; | |
5786 | exp = parse_exp_1 (&arg, 0, 0); | |
5787 | exp_end = arg; | |
5788 | exp_valid_block = innermost_block; | |
5789 | mark = value_mark (); | |
5790 | val = evaluate_expression (exp); | |
5791 | release_value (val); | |
5792 | if (VALUE_LAZY (val)) | |
5793 | value_fetch_lazy (val); | |
5794 | ||
5795 | tok = arg; | |
5796 | while (*tok == ' ' || *tok == '\t') | |
5797 | tok++; | |
5798 | end_tok = tok; | |
5799 | ||
5800 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5801 | end_tok++; | |
5802 | ||
5803 | toklen = end_tok - tok; | |
5804 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5805 | { | |
5806 | tok = cond_start = end_tok + 1; | |
5807 | cond = parse_exp_1 (&tok, 0, 0); | |
5808 | cond_end = tok; | |
5809 | } | |
5810 | if (*tok) | |
c5aa993b | 5811 | error ("Junk at end of command."); |
c906108c | 5812 | |
53a5351d | 5813 | if (accessflag == hw_read) |
c5aa993b | 5814 | bp_type = bp_read_watchpoint; |
53a5351d | 5815 | else if (accessflag == hw_access) |
c5aa993b JM |
5816 | bp_type = bp_access_watchpoint; |
5817 | else | |
5818 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5819 | |
5820 | mem_cnt = can_use_hardware_watchpoint (val); | |
5821 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5822 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5823 | if (mem_cnt != 0) |
5824 | { | |
5825 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5826 | target_resources_ok = |
5827 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5828 | other_type_used); | |
c5aa993b | 5829 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5830 | error ("Target does not support this type of hardware watchpoint."); |
5831 | ||
c5aa993b | 5832 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5833 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5834 | } |
c906108c SS |
5835 | |
5836 | #if defined(HPUXHPPA) | |
c5aa993b | 5837 | /* On HP-UX if you set a h/w |
c906108c SS |
5838 | watchpoint before the "run" command, the inferior dies with a e.g., |
5839 | SIGILL once you start it. I initially believed this was due to a | |
5840 | bad interaction between page protection traps and the initial | |
5841 | startup sequence by the dynamic linker. | |
5842 | ||
5843 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5844 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5845 | yet, which forced slow watches before a "run" or "attach", and it |
5846 | still fails somewhere in the startup code. | |
5847 | ||
5848 | Until I figure out what's happening, I'm disallowing watches altogether | |
5849 | before the "run" or "attach" command. We'll tell the user they must | |
5850 | set watches after getting the program started. */ | |
c5aa993b | 5851 | if (!target_has_execution) |
c906108c SS |
5852 | { |
5853 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5854 | return; | |
5855 | } | |
5856 | #endif /* HPUXHPPA */ | |
c5aa993b | 5857 | |
4d28f7a8 KB |
5858 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5859 | watchpoint could not be set. */ | |
5860 | if (!mem_cnt || target_resources_ok <= 0) | |
5861 | bp_type = bp_watchpoint; | |
5862 | ||
c906108c | 5863 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5864 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5865 | set_breakpoint_count (breakpoint_count + 1); |
5866 | b->number = breakpoint_count; | |
b5de0fa7 | 5867 | b->disposition = disp_donttouch; |
c906108c SS |
5868 | b->exp = exp; |
5869 | b->exp_valid_block = exp_valid_block; | |
5870 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5871 | b->val = val; | |
5872 | b->cond = cond; | |
5873 | if (cond_start) | |
5874 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5875 | else | |
5876 | b->cond_string = 0; | |
c5aa993b | 5877 | |
c906108c SS |
5878 | frame = block_innermost_frame (exp_valid_block); |
5879 | if (frame) | |
5880 | { | |
5881 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5882 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5883 | } |
5884 | else | |
101dcfbe AC |
5885 | { |
5886 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5887 | } | |
c906108c | 5888 | |
c906108c SS |
5889 | /* If the expression is "local", then set up a "watchpoint scope" |
5890 | breakpoint at the point where we've left the scope of the watchpoint | |
5891 | expression. */ | |
5892 | if (innermost_block) | |
5893 | { | |
5894 | if (prev_frame) | |
5895 | { | |
5896 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5897 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5898 | bp_watchpoint_scope); | |
c906108c | 5899 | |
b5de0fa7 | 5900 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5901 | |
5902 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5903 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5904 | |
5905 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5906 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5907 | |
5908 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5909 | scope_breakpoint->loc->requested_address |
5910 | = get_frame_pc (prev_frame); | |
5911 | scope_breakpoint->loc->address | |
88f7da05 KB |
5912 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, |
5913 | scope_breakpoint->type); | |
c906108c SS |
5914 | |
5915 | /* The scope breakpoint is related to the watchpoint. We | |
5916 | will need to act on them together. */ | |
5917 | b->related_breakpoint = scope_breakpoint; | |
5918 | } | |
5919 | } | |
5920 | value_free_to_mark (mark); | |
5921 | mention (b); | |
5922 | } | |
5923 | ||
5924 | /* Return count of locations need to be watched and can be handled | |
5925 | in hardware. If the watchpoint can not be handled | |
5926 | in hardware return zero. */ | |
5927 | ||
53a5351d JM |
5928 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) |
5929 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5930 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5931 | #endif |
5932 | ||
5933 | static int | |
fba45db2 | 5934 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5935 | { |
5936 | int found_memory_cnt = 0; | |
2e70b7b9 | 5937 | struct value *head = v; |
c906108c SS |
5938 | |
5939 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5940 | if (!can_use_hw_watchpoints) |
c906108c | 5941 | return 0; |
c5aa993b | 5942 | |
5c44784c JM |
5943 | /* Make sure that the value of the expression depends only upon |
5944 | memory contents, and values computed from them within GDB. If we | |
5945 | find any register references or function calls, we can't use a | |
5946 | hardware watchpoint. | |
5947 | ||
5948 | The idea here is that evaluating an expression generates a series | |
5949 | of values, one holding the value of every subexpression. (The | |
5950 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5951 | a*b+c.) GDB's values hold almost enough information to establish | |
5952 | the criteria given above --- they identify memory lvalues, | |
5953 | register lvalues, computed values, etcetera. So we can evaluate | |
5954 | the expression, and then scan the chain of values that leaves | |
5955 | behind to decide whether we can detect any possible change to the | |
5956 | expression's final value using only hardware watchpoints. | |
5957 | ||
5958 | However, I don't think that the values returned by inferior | |
5959 | function calls are special in any way. So this function may not | |
5960 | notice that an expression involving an inferior function call | |
5961 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5962 | for (; v; v = v->next) |
c906108c | 5963 | { |
5c44784c | 5964 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5965 | { |
5c44784c JM |
5966 | if (VALUE_LAZY (v)) |
5967 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5968 | we either just used its address (e.g., `a' in `a.b') or | |
5969 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5970 | ; | |
53a5351d | 5971 | else |
5c44784c JM |
5972 | { |
5973 | /* Ahh, memory we actually used! Check if we can cover | |
5974 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5975 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5976 | ||
5977 | /* We only watch structs and arrays if user asked for it | |
5978 | explicitly, never if they just happen to appear in a | |
5979 | middle of some value chain. */ | |
5980 | if (v == head | |
5981 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5982 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5983 | { | |
5984 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5985 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5986 | ||
5987 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5988 | return 0; | |
5989 | else | |
5990 | found_memory_cnt++; | |
5991 | } | |
5c44784c | 5992 | } |
c5aa993b | 5993 | } |
c906108c | 5994 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5995 | return 0; /* ??? What does this represent? */ |
5996 | else if (v->lval == lval_register) | |
5997 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5998 | } |
5999 | ||
6000 | /* The expression itself looks suitable for using a hardware | |
6001 | watchpoint, but give the target machine a chance to reject it. */ | |
6002 | return found_memory_cnt; | |
6003 | } | |
6004 | ||
8b93c638 | 6005 | void |
fba45db2 | 6006 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6007 | { |
6008 | watch_command (arg, from_tty); | |
6009 | } | |
8926118c | 6010 | |
c5aa993b | 6011 | static void |
fba45db2 | 6012 | watch_command (char *arg, int from_tty) |
c906108c | 6013 | { |
53a5351d | 6014 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6015 | } |
6016 | ||
8b93c638 | 6017 | void |
fba45db2 | 6018 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6019 | { |
6020 | rwatch_command (arg, from_tty); | |
6021 | } | |
8926118c | 6022 | |
c5aa993b | 6023 | static void |
fba45db2 | 6024 | rwatch_command (char *arg, int from_tty) |
c906108c | 6025 | { |
53a5351d | 6026 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6027 | } |
6028 | ||
8b93c638 | 6029 | void |
fba45db2 | 6030 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6031 | { |
6032 | awatch_command (arg, from_tty); | |
6033 | } | |
8926118c | 6034 | |
c5aa993b | 6035 | static void |
fba45db2 | 6036 | awatch_command (char *arg, int from_tty) |
c906108c | 6037 | { |
53a5351d | 6038 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6039 | } |
c906108c | 6040 | \f |
c5aa993b | 6041 | |
43ff13b4 | 6042 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6043 | because it uses the mechanisms of breakpoints. */ |
6044 | ||
43ff13b4 JM |
6045 | /* This function is called by fetch_inferior_event via the |
6046 | cmd_continuation pointer, to complete the until command. It takes | |
6047 | care of cleaning up the temporary breakpoints set up by the until | |
6048 | command. */ | |
c2c6d25f JM |
6049 | static void |
6050 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 6051 | { |
0d06e24b JM |
6052 | struct cleanup *cleanups; |
6053 | ||
57e687d9 | 6054 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 6055 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
6056 | } |
6057 | ||
c906108c | 6058 | void |
ae66c1fc | 6059 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6060 | { |
6061 | struct symtabs_and_lines sals; | |
6062 | struct symtab_and_line sal; | |
6e7f8b9c | 6063 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
6064 | struct breakpoint *breakpoint; |
6065 | struct cleanup *old_chain; | |
0d06e24b JM |
6066 | struct continuation_arg *arg1; |
6067 | ||
c906108c SS |
6068 | |
6069 | clear_proceed_status (); | |
6070 | ||
6071 | /* Set a breakpoint where the user wants it and at return from | |
6072 | this function */ | |
c5aa993b | 6073 | |
c906108c SS |
6074 | if (default_breakpoint_valid) |
6075 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6076 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6077 | else |
53a5351d | 6078 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6079 | 0, (char ***) NULL, NULL); |
c5aa993b | 6080 | |
c906108c SS |
6081 | if (sals.nelts != 1) |
6082 | error ("Couldn't get information on specified line."); | |
c5aa993b | 6083 | |
c906108c | 6084 | sal = sals.sals[0]; |
b8c9b27d | 6085 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6086 | |
c906108c SS |
6087 | if (*arg) |
6088 | error ("Junk at end of arguments."); | |
c5aa993b | 6089 | |
c906108c | 6090 | resolve_sal_pc (&sal); |
c5aa993b | 6091 | |
ae66c1fc EZ |
6092 | if (anywhere) |
6093 | /* If the user told us to continue until a specified location, | |
6094 | we don't specify a frame at which we need to stop. */ | |
6095 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6096 | else | |
6097 | /* Otherwise, specify the current frame, because we want to stop only | |
6098 | at the very same frame. */ | |
6099 | breakpoint = set_momentary_breakpoint (sal, | |
6100 | get_frame_id (deprecated_selected_frame), | |
6101 | bp_until); | |
c5aa993b | 6102 | |
6426a772 | 6103 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 6104 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6105 | else |
4d6140d9 | 6106 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
6107 | |
6108 | /* If we are running asynchronously, and the target supports async | |
6109 | execution, we are not waiting for the target to stop, in the call | |
6110 | tp proceed, below. This means that we cannot delete the | |
6111 | brekpoints until the target has actually stopped. The only place | |
6112 | where we get a chance to do that is in fetch_inferior_event, so | |
6113 | we must set things up for that. */ | |
6114 | ||
6426a772 | 6115 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 6116 | { |
0d06e24b JM |
6117 | /* In this case the arg for the continuation is just the point |
6118 | in the exec_cleanups chain from where to start doing | |
6119 | cleanups, because all the continuation does is the cleanups in | |
6120 | the exec_cleanup_chain. */ | |
6121 | arg1 = | |
6122 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
6123 | arg1->next = NULL; |
6124 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
6125 | |
6126 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 6127 | } |
c906108c | 6128 | |
ae66c1fc EZ |
6129 | /* Keep within the current frame, or in frames called by the current |
6130 | one. */ | |
c906108c SS |
6131 | if (prev_frame) |
6132 | { | |
30f7db39 AC |
6133 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6134 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
6135 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6136 | bp_until); | |
6426a772 | 6137 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 6138 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6139 | else |
4d6140d9 | 6140 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6141 | } |
c5aa993b | 6142 | |
c906108c | 6143 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
6144 | /* Do the cleanups now, anly if we are not running asynchronously, |
6145 | of if we are, but the target is still synchronous. */ | |
6426a772 | 6146 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 6147 | do_cleanups (old_chain); |
c906108c | 6148 | } |
ae66c1fc | 6149 | |
c906108c | 6150 | static void |
fba45db2 | 6151 | ep_skip_leading_whitespace (char **s) |
c906108c | 6152 | { |
c5aa993b JM |
6153 | if ((s == NULL) || (*s == NULL)) |
6154 | return; | |
6155 | while (isspace (**s)) | |
6156 | *s += 1; | |
c906108c | 6157 | } |
c5aa993b | 6158 | |
c906108c SS |
6159 | /* This function examines a string, and attempts to find a token |
6160 | that might be an event name in the leading characters. If a | |
6161 | possible match is found, a pointer to the last character of | |
6162 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6163 | |
c906108c | 6164 | static char * |
fba45db2 | 6165 | ep_find_event_name_end (char *arg) |
c906108c | 6166 | { |
c5aa993b JM |
6167 | char *s = arg; |
6168 | char *event_name_end = NULL; | |
6169 | ||
c906108c SS |
6170 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6171 | if (arg == NULL) | |
6172 | return NULL; | |
c5aa993b | 6173 | |
c906108c | 6174 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6175 | Basically, we're looking for alphanumerics and underscores; |
6176 | anything else delimites the token. */ | |
c906108c SS |
6177 | while (*s != '\0') |
6178 | { | |
c5aa993b JM |
6179 | if (!isalnum (*s) && (*s != '_')) |
6180 | break; | |
c906108c SS |
6181 | event_name_end = s; |
6182 | s++; | |
6183 | } | |
c5aa993b | 6184 | |
c906108c SS |
6185 | return event_name_end; |
6186 | } | |
6187 | ||
c5aa993b | 6188 | |
c906108c SS |
6189 | /* This function attempts to parse an optional "if <cond>" clause |
6190 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6191 | |
c906108c SS |
6192 | Else, it returns a pointer to the condition string. (It does not |
6193 | attempt to evaluate the string against a particular block.) And, | |
6194 | it updates arg to point to the first character following the parsed | |
6195 | if clause in the arg string. */ | |
53a5351d | 6196 | |
c906108c | 6197 | static char * |
fba45db2 | 6198 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6199 | { |
c5aa993b JM |
6200 | char *cond_string; |
6201 | ||
6202 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6203 | return NULL; |
c5aa993b | 6204 | |
c906108c SS |
6205 | /* Skip the "if" keyword. */ |
6206 | (*arg) += 2; | |
c5aa993b | 6207 | |
c906108c SS |
6208 | /* Skip any extra leading whitespace, and record the start of the |
6209 | condition string. */ | |
6210 | ep_skip_leading_whitespace (arg); | |
6211 | cond_string = *arg; | |
c5aa993b | 6212 | |
c906108c SS |
6213 | /* Assume that the condition occupies the remainder of the arg string. */ |
6214 | (*arg) += strlen (cond_string); | |
c5aa993b | 6215 | |
c906108c SS |
6216 | return cond_string; |
6217 | } | |
c5aa993b | 6218 | |
c906108c SS |
6219 | /* This function attempts to parse an optional filename from the arg |
6220 | string. If one is not found, it returns NULL. | |
c5aa993b | 6221 | |
c906108c SS |
6222 | Else, it returns a pointer to the parsed filename. (This function |
6223 | makes no attempt to verify that a file of that name exists, or is | |
6224 | accessible.) And, it updates arg to point to the first character | |
6225 | following the parsed filename in the arg string. | |
c5aa993b | 6226 | |
c906108c SS |
6227 | Note that clients needing to preserve the returned filename for |
6228 | future access should copy it to their own buffers. */ | |
6229 | static char * | |
fba45db2 | 6230 | ep_parse_optional_filename (char **arg) |
c906108c | 6231 | { |
c5aa993b JM |
6232 | static char filename[1024]; |
6233 | char *arg_p = *arg; | |
6234 | int i; | |
6235 | char c; | |
6236 | ||
c906108c SS |
6237 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6238 | return NULL; | |
c5aa993b JM |
6239 | |
6240 | for (i = 0;; i++) | |
c906108c SS |
6241 | { |
6242 | c = *arg_p; | |
6243 | if (isspace (c)) | |
c5aa993b | 6244 | c = '\0'; |
c906108c SS |
6245 | filename[i] = c; |
6246 | if (c == '\0') | |
c5aa993b | 6247 | break; |
c906108c SS |
6248 | arg_p++; |
6249 | } | |
6250 | *arg = arg_p; | |
c5aa993b | 6251 | |
c906108c SS |
6252 | return filename; |
6253 | } | |
c5aa993b | 6254 | |
c906108c SS |
6255 | /* Commands to deal with catching events, such as signals, exceptions, |
6256 | process start/exit, etc. */ | |
c5aa993b JM |
6257 | |
6258 | typedef enum | |
6259 | { | |
6260 | catch_fork, catch_vfork | |
6261 | } | |
6262 | catch_fork_kind; | |
6263 | ||
c906108c | 6264 | static void |
fba45db2 KB |
6265 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6266 | int from_tty) | |
c906108c | 6267 | { |
c5aa993b JM |
6268 | char *cond_string = NULL; |
6269 | ||
c906108c | 6270 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6271 | |
c906108c | 6272 | /* The allowed syntax is: |
c5aa993b JM |
6273 | catch [v]fork |
6274 | catch [v]fork if <cond> | |
6275 | ||
c906108c SS |
6276 | First, check if there's an if clause. */ |
6277 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6278 | |
c906108c SS |
6279 | if ((*arg != '\0') && !isspace (*arg)) |
6280 | error ("Junk at end of arguments."); | |
c5aa993b | 6281 | |
c906108c SS |
6282 | /* If this target supports it, create a fork or vfork catchpoint |
6283 | and enable reporting of such events. */ | |
c5aa993b JM |
6284 | switch (fork_kind) |
6285 | { | |
6286 | case catch_fork: | |
c906108c SS |
6287 | create_fork_event_catchpoint (tempflag, cond_string); |
6288 | break; | |
c5aa993b | 6289 | case catch_vfork: |
c906108c SS |
6290 | create_vfork_event_catchpoint (tempflag, cond_string); |
6291 | break; | |
c5aa993b | 6292 | default: |
c906108c SS |
6293 | error ("unsupported or unknown fork kind; cannot catch it"); |
6294 | break; | |
c5aa993b | 6295 | } |
c906108c SS |
6296 | } |
6297 | ||
6298 | static void | |
fba45db2 | 6299 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6300 | { |
c5aa993b | 6301 | char *cond_string = NULL; |
c906108c SS |
6302 | |
6303 | ep_skip_leading_whitespace (&arg); | |
6304 | ||
6305 | /* The allowed syntax is: | |
c5aa993b JM |
6306 | catch exec |
6307 | catch exec if <cond> | |
c906108c SS |
6308 | |
6309 | First, check if there's an if clause. */ | |
6310 | cond_string = ep_parse_optional_if_clause (&arg); | |
6311 | ||
6312 | if ((*arg != '\0') && !isspace (*arg)) | |
6313 | error ("Junk at end of arguments."); | |
6314 | ||
6315 | /* If this target supports it, create an exec catchpoint | |
6316 | and enable reporting of such events. */ | |
6317 | create_exec_event_catchpoint (tempflag, cond_string); | |
6318 | } | |
c5aa993b | 6319 | |
c906108c | 6320 | static void |
fba45db2 | 6321 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6322 | { |
c5aa993b JM |
6323 | char *dll_pathname = NULL; |
6324 | char *cond_string = NULL; | |
6325 | ||
c906108c | 6326 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6327 | |
c906108c | 6328 | /* The allowed syntax is: |
c5aa993b JM |
6329 | catch load |
6330 | catch load if <cond> | |
6331 | catch load <filename> | |
6332 | catch load <filename> if <cond> | |
6333 | ||
c906108c SS |
6334 | The user is not allowed to specify the <filename> after an |
6335 | if clause. | |
c5aa993b | 6336 | |
c906108c | 6337 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6338 | |
c906108c SS |
6339 | First, check if there's an if clause. If so, then there |
6340 | cannot be a filename. */ | |
6341 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6342 | |
c906108c SS |
6343 | /* If there was an if clause, then there cannot be a filename. |
6344 | Else, there might be a filename and an if clause. */ | |
6345 | if (cond_string == NULL) | |
6346 | { | |
6347 | dll_pathname = ep_parse_optional_filename (&arg); | |
6348 | ep_skip_leading_whitespace (&arg); | |
6349 | cond_string = ep_parse_optional_if_clause (&arg); | |
6350 | } | |
c5aa993b | 6351 | |
c906108c SS |
6352 | if ((*arg != '\0') && !isspace (*arg)) |
6353 | error ("Junk at end of arguments."); | |
c5aa993b | 6354 | |
c906108c SS |
6355 | /* Create a load breakpoint that only triggers when a load of |
6356 | the specified dll (or any dll, if no pathname was specified) | |
6357 | occurs. */ | |
39f77062 | 6358 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6359 | dll_pathname, cond_string); |
c906108c | 6360 | } |
c5aa993b | 6361 | |
c906108c | 6362 | static void |
fba45db2 | 6363 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6364 | { |
c5aa993b JM |
6365 | char *dll_pathname = NULL; |
6366 | char *cond_string = NULL; | |
6367 | ||
c906108c | 6368 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6369 | |
c906108c | 6370 | /* The allowed syntax is: |
c5aa993b JM |
6371 | catch unload |
6372 | catch unload if <cond> | |
6373 | catch unload <filename> | |
6374 | catch unload <filename> if <cond> | |
6375 | ||
c906108c SS |
6376 | The user is not allowed to specify the <filename> after an |
6377 | if clause. | |
c5aa993b | 6378 | |
c906108c | 6379 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6380 | |
c906108c SS |
6381 | First, check if there's an if clause. If so, then there |
6382 | cannot be a filename. */ | |
6383 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6384 | |
c906108c SS |
6385 | /* If there was an if clause, then there cannot be a filename. |
6386 | Else, there might be a filename and an if clause. */ | |
6387 | if (cond_string == NULL) | |
6388 | { | |
6389 | dll_pathname = ep_parse_optional_filename (&arg); | |
6390 | ep_skip_leading_whitespace (&arg); | |
6391 | cond_string = ep_parse_optional_if_clause (&arg); | |
6392 | } | |
c5aa993b | 6393 | |
c906108c SS |
6394 | if ((*arg != '\0') && !isspace (*arg)) |
6395 | error ("Junk at end of arguments."); | |
c5aa993b | 6396 | |
c906108c SS |
6397 | /* Create an unload breakpoint that only triggers when an unload of |
6398 | the specified dll (or any dll, if no pathname was specified) | |
6399 | occurs. */ | |
39f77062 | 6400 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6401 | dll_pathname, cond_string); |
c906108c | 6402 | } |
c906108c SS |
6403 | |
6404 | /* Commands to deal with catching exceptions. */ | |
6405 | ||
6406 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6407 | exception event callback */ |
c906108c SS |
6408 | |
6409 | static void | |
fba45db2 KB |
6410 | create_exception_catchpoint (int tempflag, char *cond_string, |
6411 | enum exception_event_kind ex_event, | |
6412 | struct symtab_and_line *sal) | |
c906108c | 6413 | { |
c5aa993b | 6414 | struct breakpoint *b; |
c5aa993b | 6415 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6416 | enum bptype bptype; |
c906108c | 6417 | |
c5aa993b | 6418 | if (!sal) /* no exception support? */ |
c906108c SS |
6419 | return; |
6420 | ||
c906108c SS |
6421 | switch (ex_event) |
6422 | { | |
c5aa993b | 6423 | case EX_EVENT_THROW: |
4d28f7a8 | 6424 | bptype = bp_catch_throw; |
c5aa993b JM |
6425 | break; |
6426 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6427 | bptype = bp_catch_catch; |
c5aa993b JM |
6428 | break; |
6429 | default: /* error condition */ | |
c5aa993b | 6430 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6431 | } |
4d28f7a8 KB |
6432 | |
6433 | b = set_raw_breakpoint (*sal, bptype); | |
6434 | set_breakpoint_count (breakpoint_count + 1); | |
6435 | b->number = breakpoint_count; | |
6436 | b->cond = NULL; | |
6437 | b->cond_string = (cond_string == NULL) ? | |
6438 | NULL : savestring (cond_string, strlen (cond_string)); | |
6439 | b->thread = thread; | |
6440 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6441 | b->enable_state = bp_enabled; |
6442 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6443 | mention (b); |
6444 | } | |
6445 | ||
3086aeae DJ |
6446 | static enum print_stop_action |
6447 | print_exception_catchpoint (struct breakpoint *b) | |
6448 | { | |
6449 | annotate_catchpoint (b->number); | |
6450 | ||
6451 | if (strstr (b->addr_string, "throw") != NULL) | |
6452 | printf_filtered ("\nCatchpoint %d (exception thrown)\n", | |
6453 | b->number); | |
6454 | else | |
6455 | printf_filtered ("\nCatchpoint %d (exception caught)\n", | |
6456 | b->number); | |
6457 | ||
6458 | return PRINT_SRC_AND_LOC; | |
6459 | } | |
6460 | ||
6461 | static void | |
6462 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6463 | { | |
6464 | if (addressprint) | |
6465 | { | |
6466 | annotate_field (4); | |
5cab636d | 6467 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6468 | } |
6469 | annotate_field (5); | |
5cab636d | 6470 | *last_addr = b->loc->address; |
3086aeae DJ |
6471 | if (strstr (b->addr_string, "throw") != NULL) |
6472 | ui_out_field_string (uiout, "what", "exception throw"); | |
6473 | else | |
6474 | ui_out_field_string (uiout, "what", "exception catch"); | |
6475 | } | |
6476 | ||
6477 | static void | |
6478 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6479 | { | |
6480 | if (strstr (b->addr_string, "throw") != NULL) | |
6481 | printf_filtered ("Catchpoint %d (throw)", b->number); | |
6482 | else | |
6483 | printf_filtered ("Catchpoint %d (catch)", b->number); | |
6484 | } | |
6485 | ||
6486 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6487 | print_exception_catchpoint, | |
6488 | print_one_exception_catchpoint, | |
6489 | print_mention_exception_catchpoint | |
6490 | }; | |
6491 | ||
6492 | static int | |
6493 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6494 | enum exception_event_kind ex_event, int from_tty) | |
6495 | { | |
6496 | char *trigger_func_name, *nameptr; | |
6497 | struct symtabs_and_lines sals; | |
6498 | struct breakpoint *b; | |
6499 | ||
6500 | if (ex_event == EX_EVENT_CATCH) | |
6501 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6502 | else | |
6503 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6504 | ||
6505 | nameptr = trigger_func_name; | |
68219205 | 6506 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6507 | if (sals.nelts == 0) |
6508 | { | |
b59661bd | 6509 | xfree (trigger_func_name); |
3086aeae DJ |
6510 | return 0; |
6511 | } | |
6512 | ||
6513 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6514 | set_breakpoint_count (breakpoint_count + 1); | |
6515 | b->number = breakpoint_count; | |
6516 | b->cond = NULL; | |
6517 | b->cond_string = (cond_string == NULL) ? | |
6518 | NULL : savestring (cond_string, strlen (cond_string)); | |
6519 | b->thread = -1; | |
6520 | b->addr_string = trigger_func_name; | |
6521 | b->enable_state = bp_enabled; | |
6522 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6523 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6524 | ||
b59661bd | 6525 | xfree (sals.sals); |
3086aeae DJ |
6526 | mention (b); |
6527 | return 1; | |
6528 | } | |
6529 | ||
c5aa993b | 6530 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6531 | |
6532 | static void | |
fba45db2 KB |
6533 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6534 | int tempflag, int from_tty) | |
c906108c | 6535 | { |
c5aa993b JM |
6536 | char *cond_string = NULL; |
6537 | struct symtab_and_line *sal = NULL; | |
6538 | ||
c906108c | 6539 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6540 | |
c906108c SS |
6541 | cond_string = ep_parse_optional_if_clause (&arg); |
6542 | ||
6543 | if ((*arg != '\0') && !isspace (*arg)) | |
6544 | error ("Junk at end of arguments."); | |
6545 | ||
6546 | if ((ex_event != EX_EVENT_THROW) && | |
6547 | (ex_event != EX_EVENT_CATCH)) | |
6548 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6549 | ||
3086aeae DJ |
6550 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6551 | return; | |
6552 | ||
c906108c SS |
6553 | /* See if we can find a callback routine */ |
6554 | sal = target_enable_exception_callback (ex_event, 1); | |
6555 | ||
c5aa993b | 6556 | if (sal) |
c906108c SS |
6557 | { |
6558 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6559 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6560 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6561 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6562 | else |
53a5351d | 6563 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6564 | } |
c5aa993b | 6565 | |
69f567ae | 6566 | warning ("Unsupported with this platform/compiler combination."); |
c906108c SS |
6567 | } |
6568 | ||
6569 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6570 | inside a catch_errors */ | |
6571 | ||
6572 | static int | |
4efb68b1 | 6573 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6574 | { |
6575 | args_for_catchpoint_enable *args = arg; | |
6576 | struct symtab_and_line *sal; | |
b5de0fa7 | 6577 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6578 | if (sal == NULL) |
6579 | return 0; | |
6580 | else if (sal == (struct symtab_and_line *) -1) | |
6581 | return -1; | |
6582 | else | |
c5aa993b | 6583 | return 1; /*is valid */ |
c906108c SS |
6584 | } |
6585 | ||
c906108c | 6586 | static void |
fba45db2 | 6587 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6588 | { |
c5aa993b | 6589 | |
c906108c SS |
6590 | /* The first argument may be an event name, such as "start" or "load". |
6591 | If so, then handle it as such. If it doesn't match an event name, | |
6592 | then attempt to interpret it as an exception name. (This latter is | |
6593 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6594 | |
c906108c | 6595 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6596 | char *arg1_start = arg; |
6597 | char *arg1_end; | |
6598 | int arg1_length; | |
6599 | ||
c906108c SS |
6600 | if (arg1_start == NULL) |
6601 | { | |
c5aa993b | 6602 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6603 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6604 | /* return; */ | |
c5aa993b | 6605 | /* Now, this is not allowed */ |
c906108c SS |
6606 | error ("Catch requires an event name."); |
6607 | ||
6608 | } | |
6609 | arg1_end = ep_find_event_name_end (arg1_start); | |
6610 | if (arg1_end == NULL) | |
6611 | error ("catch requires an event"); | |
6612 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6613 | |
c906108c SS |
6614 | /* Try to match what we found against known event names. */ |
6615 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6616 | { | |
6617 | error ("Catch of signal not yet implemented"); | |
6618 | } | |
6619 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6620 | { | |
53a5351d JM |
6621 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6622 | tempflag, from_tty); | |
c906108c SS |
6623 | } |
6624 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6625 | { | |
53a5351d JM |
6626 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6627 | tempflag, from_tty); | |
c906108c SS |
6628 | } |
6629 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6630 | { | |
6631 | error ("Catch of thread_start not yet implemented"); | |
6632 | } | |
6633 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6634 | { | |
6635 | error ("Catch of thread_exit not yet implemented"); | |
6636 | } | |
6637 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6638 | { | |
6639 | error ("Catch of thread_join not yet implemented"); | |
6640 | } | |
6641 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6642 | { | |
6643 | error ("Catch of start not yet implemented"); | |
6644 | } | |
6645 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6646 | { | |
6647 | error ("Catch of exit not yet implemented"); | |
6648 | } | |
6649 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6650 | { | |
c5aa993b | 6651 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6652 | } |
6653 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6654 | { | |
c5aa993b | 6655 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6656 | } |
6657 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6658 | { | |
c5aa993b | 6659 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6660 | } |
6661 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6662 | { | |
c5aa993b | 6663 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6664 | } |
6665 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6666 | { | |
c5aa993b | 6667 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6668 | } |
6669 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6670 | { | |
6671 | error ("Catch of stop not yet implemented"); | |
6672 | } | |
c5aa993b | 6673 | |
c906108c SS |
6674 | /* This doesn't appear to be an event name */ |
6675 | ||
6676 | else | |
6677 | { | |
6678 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6679 | as the name of an exception */ |
c906108c | 6680 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6681 | /* Now this is not allowed */ |
c906108c SS |
6682 | error ("Unknown event kind specified for catch"); |
6683 | ||
6684 | } | |
6685 | } | |
6686 | ||
6687 | /* Used by the gui, could be made a worker for other things. */ | |
6688 | ||
6689 | struct breakpoint * | |
fba45db2 | 6690 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6691 | { |
6692 | struct breakpoint *b; | |
4d28f7a8 | 6693 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6694 | set_breakpoint_count (breakpoint_count + 1); |
6695 | b->number = breakpoint_count; | |
c906108c SS |
6696 | b->cond = 0; |
6697 | b->thread = -1; | |
6698 | return b; | |
6699 | } | |
6700 | ||
c906108c | 6701 | static void |
fba45db2 | 6702 | catch_command (char *arg, int from_tty) |
c906108c SS |
6703 | { |
6704 | catch_command_1 (arg, 0, from_tty); | |
6705 | } | |
6706 | \f | |
6707 | ||
6708 | static void | |
fba45db2 | 6709 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6710 | { |
6711 | catch_command_1 (arg, 1, from_tty); | |
6712 | } | |
6713 | ||
80f8a6eb | 6714 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6715 | |
6716 | static void | |
fba45db2 | 6717 | clear_command (char *arg, int from_tty) |
c906108c | 6718 | { |
80f8a6eb | 6719 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6720 | int default_match; |
6721 | struct symtabs_and_lines sals; | |
6722 | struct symtab_and_line sal; | |
c906108c SS |
6723 | int i; |
6724 | ||
6725 | if (arg) | |
6726 | { | |
6727 | sals = decode_line_spec (arg, 1); | |
6728 | default_match = 0; | |
6729 | } | |
6730 | else | |
6731 | { | |
c5aa993b | 6732 | sals.sals = (struct symtab_and_line *) |
c906108c | 6733 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6734 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6735 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6736 | sal.line = default_breakpoint_line; |
6737 | sal.symtab = default_breakpoint_symtab; | |
6738 | sal.pc = default_breakpoint_address; | |
6739 | if (sal.symtab == 0) | |
6740 | error ("No source file specified."); | |
6741 | ||
6742 | sals.sals[0] = sal; | |
6743 | sals.nelts = 1; | |
6744 | ||
6745 | default_match = 1; | |
6746 | } | |
6747 | ||
6748 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6749 | to it. Do it in two passes, solely to preserve the current |
6750 | behavior that from_tty is forced true if we delete more than | |
6751 | one breakpoint. */ | |
c906108c | 6752 | |
80f8a6eb | 6753 | found = NULL; |
c906108c SS |
6754 | for (i = 0; i < sals.nelts; i++) |
6755 | { | |
6756 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6757 | If line given (pc == 0), clear all bpts on specified line. |
6758 | If defaulting, clear all bpts on default line | |
c906108c | 6759 | or at default pc. |
c5aa993b JM |
6760 | |
6761 | defaulting sal.pc != 0 tests to do | |
6762 | ||
6763 | 0 1 pc | |
6764 | 1 1 pc _and_ line | |
6765 | 0 0 line | |
6766 | 1 0 <can't happen> */ | |
c906108c SS |
6767 | |
6768 | sal = sals.sals[i]; | |
80f8a6eb | 6769 | prev = NULL; |
c906108c | 6770 | |
80f8a6eb MS |
6771 | /* Find all matching breakpoints, remove them from the |
6772 | breakpoint chain, and add them to the 'found' chain. */ | |
6773 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6774 | { |
80f8a6eb MS |
6775 | /* Are we going to delete b? */ |
6776 | if (b->type != bp_none | |
6777 | && b->type != bp_watchpoint | |
6778 | && b->type != bp_hardware_watchpoint | |
6779 | && b->type != bp_read_watchpoint | |
6780 | && b->type != bp_access_watchpoint | |
6781 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6782 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6783 | && (!section_is_overlay (b->loc->section) |
6784 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6785 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6786 | || ((default_match || (0 == sal.pc)) | |
6787 | && b->source_file != NULL | |
6788 | && sal.symtab != NULL | |
6314a349 | 6789 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
80f8a6eb MS |
6790 | && b->line_number == sal.line))) |
6791 | /* Yes, if sal source file and line matches b. */ | |
6792 | { | |
6793 | /* Remove it from breakpoint_chain... */ | |
6794 | if (b == breakpoint_chain) | |
6795 | { | |
6796 | /* b is at the head of the list */ | |
6797 | breakpoint_chain = b->next; | |
6798 | } | |
6799 | else | |
6800 | { | |
6801 | prev->next = b->next; | |
6802 | } | |
6803 | /* And add it to 'found' chain. */ | |
6804 | b->next = found; | |
6805 | found = b; | |
6806 | } | |
c906108c | 6807 | else |
80f8a6eb MS |
6808 | { |
6809 | /* Keep b, and keep a pointer to it. */ | |
6810 | prev = b; | |
6811 | } | |
c906108c | 6812 | } |
80f8a6eb MS |
6813 | } |
6814 | /* Now go thru the 'found' chain and delete them. */ | |
6815 | if (found == 0) | |
6816 | { | |
6817 | if (arg) | |
6818 | error ("No breakpoint at %s.", arg); | |
6819 | else | |
6820 | error ("No breakpoint at this line."); | |
6821 | } | |
c906108c | 6822 | |
80f8a6eb MS |
6823 | if (found->next) |
6824 | from_tty = 1; /* Always report if deleted more than one */ | |
6825 | if (from_tty) | |
6826 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6827 | breakpoints_changed (); | |
6828 | while (found) | |
6829 | { | |
c5aa993b | 6830 | if (from_tty) |
80f8a6eb MS |
6831 | printf_unfiltered ("%d ", found->number); |
6832 | tmp = found->next; | |
6833 | delete_breakpoint (found); | |
6834 | found = tmp; | |
c906108c | 6835 | } |
80f8a6eb MS |
6836 | if (from_tty) |
6837 | putchar_unfiltered ('\n'); | |
c906108c SS |
6838 | } |
6839 | \f | |
6840 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6841 | all breakpoints that are marked for deletion, whether hit or not. | |
6842 | This is called after any breakpoint is hit, or after errors. */ | |
6843 | ||
6844 | void | |
fba45db2 | 6845 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6846 | { |
6847 | struct breakpoint *b, *temp; | |
6848 | ||
6849 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6850 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6851 | && bs->stop) |
6852 | delete_breakpoint (bs->breakpoint_at); | |
6853 | ||
6854 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6855 | { |
b5de0fa7 | 6856 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6857 | delete_breakpoint (b); |
6858 | } | |
c906108c SS |
6859 | } |
6860 | ||
53a5351d JM |
6861 | /* Delete a breakpoint and clean up all traces of it in the data |
6862 | structures. */ | |
c906108c SS |
6863 | |
6864 | void | |
fba45db2 | 6865 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6866 | { |
52f0bd74 AC |
6867 | struct breakpoint *b; |
6868 | bpstat bs; | |
7cc221ef | 6869 | struct bp_location *loc; |
c906108c SS |
6870 | |
6871 | if (bpt == NULL) | |
6872 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6873 | ||
6874 | ||
6875 | /* Has this bp already been deleted? This can happen because multiple | |
6876 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6877 | ||
6878 | One example of this happening is a watchpoint's scope bp. When the | |
6879 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6880 | delete it. We also delete its scope bp. But the scope bp is marked | |
6881 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6882 | checked for auto-deleting bp's, which are deleted. | |
6883 | ||
6884 | A real solution to this problem might involve reference counts in bp's, | |
6885 | and/or giving them pointers back to their referencing bpstat's, and | |
6886 | teaching delete_breakpoint to only free a bp's storage when no more | |
6887 | references were extent. A cheaper bandaid was chosen. */ | |
6888 | if (bpt->type == bp_none) | |
6889 | return; | |
6890 | ||
9a4105ab AC |
6891 | if (deprecated_delete_breakpoint_hook) |
6892 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 6893 | breakpoint_delete_event (bpt->number); |
c906108c | 6894 | |
5cab636d | 6895 | if (bpt->loc->inserted) |
0bde7532 | 6896 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6897 | |
7270d8f2 OF |
6898 | free_valchain (bpt->loc); |
6899 | ||
c906108c SS |
6900 | if (breakpoint_chain == bpt) |
6901 | breakpoint_chain = bpt->next; | |
6902 | ||
7cc221ef DJ |
6903 | if (bp_location_chain == bpt->loc) |
6904 | bp_location_chain = bpt->loc->next; | |
6905 | ||
c906108c SS |
6906 | /* If we have callback-style exception catchpoints, don't go through |
6907 | the adjustments to the C++ runtime library etc. if the inferior | |
6908 | isn't actually running. target_enable_exception_callback for a | |
6909 | null target ops vector gives an undesirable error message, so we | |
6910 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6911 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6912 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6913 | { | |
53a5351d | 6914 | /* Format possible error msg */ |
9ebf4acf AC |
6915 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6916 | bpt->number); | |
6917 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
6918 | args_for_catchpoint_enable args; | |
53a5351d JM |
6919 | args.kind = bpt->type == bp_catch_catch ? |
6920 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6921 | args.enable_p = 0; |
c906108c SS |
6922 | catch_errors (cover_target_enable_exception_callback, &args, |
6923 | message, RETURN_MASK_ALL); | |
9ebf4acf | 6924 | do_cleanups (cleanups); |
c906108c SS |
6925 | } |
6926 | ||
6927 | ||
6928 | ALL_BREAKPOINTS (b) | |
6929 | if (b->next == bpt) | |
c5aa993b JM |
6930 | { |
6931 | b->next = bpt->next; | |
6932 | break; | |
6933 | } | |
c906108c | 6934 | |
7cc221ef DJ |
6935 | ALL_BP_LOCATIONS (loc) |
6936 | if (loc->next == bpt->loc) | |
6937 | { | |
6938 | loc->next = bpt->loc->next; | |
6939 | break; | |
6940 | } | |
6941 | ||
9f60f21b | 6942 | check_duplicates (bpt); |
c906108c SS |
6943 | /* If this breakpoint was inserted, and there is another breakpoint |
6944 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 6945 | if (bpt->loc->inserted |
c906108c SS |
6946 | && bpt->type != bp_hardware_watchpoint |
6947 | && bpt->type != bp_read_watchpoint | |
6948 | && bpt->type != bp_access_watchpoint | |
6949 | && bpt->type != bp_catch_fork | |
6950 | && bpt->type != bp_catch_vfork | |
6951 | && bpt->type != bp_catch_exec) | |
6952 | { | |
6953 | ALL_BREAKPOINTS (b) | |
5cab636d | 6954 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 6955 | && b->loc->section == bpt->loc->section |
5cab636d | 6956 | && !b->loc->duplicate |
b5de0fa7 EZ |
6957 | && b->enable_state != bp_disabled |
6958 | && b->enable_state != bp_shlib_disabled | |
0101ce28 | 6959 | && !b->pending |
b5de0fa7 | 6960 | && b->enable_state != bp_call_disabled) |
c5aa993b JM |
6961 | { |
6962 | int val; | |
53a5351d | 6963 | |
c2c6d25f JM |
6964 | /* We should never reach this point if there is a permanent |
6965 | breakpoint at the same address as the one being deleted. | |
6966 | If there is a permanent breakpoint somewhere, it should | |
6967 | always be the only one inserted. */ | |
b5de0fa7 | 6968 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6969 | internal_error (__FILE__, __LINE__, |
6970 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6971 | "a permanent breakpoint"); |
6972 | ||
53a5351d | 6973 | if (b->type == bp_hardware_breakpoint) |
5cab636d | 6974 | val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6975 | else |
5cab636d | 6976 | val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6977 | |
81d0cc19 | 6978 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6979 | if (val != 0) |
6980 | { | |
81d0cc19 GS |
6981 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6982 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6983 | ||
6984 | ||
6985 | if (b->type == bp_hardware_breakpoint) | |
6986 | { | |
6987 | fprintf_unfiltered (tmp_error_stream, | |
6988 | "Cannot insert hardware breakpoint %d.\n" | |
6989 | "You may have requested too many hardware breakpoints.\n", | |
6990 | b->number); | |
6991 | } | |
6992 | else | |
6993 | { | |
6994 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6995 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
5cab636d | 6996 | print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
6997 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
6998 | safe_strerror (val)); | |
6999 | } | |
7000 | ||
7001 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 7002 | target_terminal_ours_for_output (); |
81d0cc19 | 7003 | error_stream(tmp_error_stream); |
c5aa993b JM |
7004 | } |
7005 | else | |
5cab636d | 7006 | b->loc->inserted = 1; |
c5aa993b | 7007 | } |
c906108c SS |
7008 | } |
7009 | ||
7010 | free_command_lines (&bpt->commands); | |
7011 | if (bpt->cond) | |
b8c9b27d | 7012 | xfree (bpt->cond); |
c906108c | 7013 | if (bpt->cond_string != NULL) |
b8c9b27d | 7014 | xfree (bpt->cond_string); |
c906108c | 7015 | if (bpt->addr_string != NULL) |
b8c9b27d | 7016 | xfree (bpt->addr_string); |
c906108c | 7017 | if (bpt->exp != NULL) |
b8c9b27d | 7018 | xfree (bpt->exp); |
c906108c | 7019 | if (bpt->exp_string != NULL) |
b8c9b27d | 7020 | xfree (bpt->exp_string); |
c906108c SS |
7021 | if (bpt->val != NULL) |
7022 | value_free (bpt->val); | |
7023 | if (bpt->source_file != NULL) | |
b8c9b27d | 7024 | xfree (bpt->source_file); |
c906108c | 7025 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7026 | xfree (bpt->dll_pathname); |
c906108c | 7027 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7028 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7029 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7030 | xfree (bpt->exec_pathname); |
c906108c SS |
7031 | |
7032 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7033 | /* FIXME, how can we find all bpstat's? | |
7034 | We just check stop_bpstat for now. */ | |
7035 | for (bs = stop_bpstat; bs; bs = bs->next) | |
7036 | if (bs->breakpoint_at == bpt) | |
7037 | { | |
7038 | bs->breakpoint_at = NULL; | |
c906108c | 7039 | bs->old_val = NULL; |
c2b8ed2c | 7040 | /* bs->commands will be freed later. */ |
c906108c SS |
7041 | } |
7042 | /* On the chance that someone will soon try again to delete this same | |
7043 | bp, we mark it as deleted before freeing its storage. */ | |
7044 | bpt->type = bp_none; | |
7045 | ||
5cab636d | 7046 | xfree (bpt->loc); |
b8c9b27d | 7047 | xfree (bpt); |
c906108c SS |
7048 | } |
7049 | ||
4d6140d9 AC |
7050 | static void |
7051 | do_delete_breakpoint_cleanup (void *b) | |
7052 | { | |
7053 | delete_breakpoint (b); | |
7054 | } | |
7055 | ||
7056 | struct cleanup * | |
7057 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7058 | { | |
7059 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7060 | } | |
7061 | ||
7062 | struct cleanup * | |
7063 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
7064 | { | |
7065 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
7066 | } | |
7067 | ||
c906108c | 7068 | void |
fba45db2 | 7069 | delete_command (char *arg, int from_tty) |
c906108c SS |
7070 | { |
7071 | struct breakpoint *b, *temp; | |
7072 | ||
ea9365bb TT |
7073 | dont_repeat (); |
7074 | ||
c906108c SS |
7075 | if (arg == 0) |
7076 | { | |
7077 | int breaks_to_delete = 0; | |
7078 | ||
7079 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7080 | Do not delete internal or call-dummy breakpoints, these |
7081 | have to be deleted with an explicit breakpoint number argument. */ | |
7082 | ALL_BREAKPOINTS (b) | |
7083 | { | |
7084 | if (b->type != bp_call_dummy && | |
7085 | b->type != bp_shlib_event && | |
c4093a6a | 7086 | b->type != bp_thread_event && |
1900040c | 7087 | b->type != bp_overlay_event && |
c5aa993b JM |
7088 | b->number >= 0) |
7089 | breaks_to_delete = 1; | |
7090 | } | |
c906108c SS |
7091 | |
7092 | /* Ask user only if there are some breakpoints to delete. */ | |
7093 | if (!from_tty | |
7094 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
7095 | { | |
c5aa993b JM |
7096 | ALL_BREAKPOINTS_SAFE (b, temp) |
7097 | { | |
7098 | if (b->type != bp_call_dummy && | |
7099 | b->type != bp_shlib_event && | |
c4093a6a | 7100 | b->type != bp_thread_event && |
1900040c | 7101 | b->type != bp_overlay_event && |
c5aa993b JM |
7102 | b->number >= 0) |
7103 | delete_breakpoint (b); | |
7104 | } | |
c906108c SS |
7105 | } |
7106 | } | |
7107 | else | |
7108 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7109 | } | |
7110 | ||
7111 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
7112 | The value we return ends up being the return value from catch_errors. | |
7113 | Unused in this case. */ | |
7114 | ||
7115 | static int | |
4efb68b1 | 7116 | breakpoint_re_set_one (void *bint) |
c906108c | 7117 | { |
53a5351d JM |
7118 | /* get past catch_errs */ |
7119 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7120 | struct value *mark; |
7121 | int i; | |
7122 | struct symtabs_and_lines sals; | |
7123 | char *s; | |
b5de0fa7 | 7124 | enum enable_state save_enable; |
c906108c SS |
7125 | |
7126 | switch (b->type) | |
7127 | { | |
7128 | case bp_none: | |
53a5351d JM |
7129 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
7130 | b->number); | |
c906108c SS |
7131 | return 0; |
7132 | case bp_breakpoint: | |
7133 | case bp_hardware_breakpoint: | |
7134 | case bp_catch_load: | |
7135 | case bp_catch_unload: | |
7136 | if (b->addr_string == NULL) | |
7137 | { | |
7138 | /* Anything without a string can't be re-set. */ | |
7139 | delete_breakpoint (b); | |
7140 | return 0; | |
7141 | } | |
b18c45ed AC |
7142 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
7143 | ||
7144 | ``And a hack it is, although Apple's Darwin version of GDB | |
7145 | contains an almost identical hack to implement a "future | |
7146 | break" command. It seems to work in many real world cases, | |
7147 | but it is easy to come up with a test case where the patch | |
7148 | doesn't help at all.'' | |
7149 | ||
7150 | ``It seems that the way GDB implements breakpoints - in - | |
7151 | shared - libraries was designed for a.out shared library | |
7152 | systems (SunOS 4) where shared libraries were loaded at a | |
7153 | fixed address in memory. Since ELF shared libraries can (and | |
7154 | will) be loaded at any address in memory, things break. | |
7155 | Fixing this is not trivial. Therefore, I'm not sure whether | |
7156 | we should add this hack to the branch only. I cannot | |
7157 | guarantee that things will be fixed on the trunk in the near | |
7158 | future.'' | |
7159 | ||
7160 | In case we have a problem, disable this breakpoint. We'll | |
7161 | restore its status if we succeed. Don't disable a | |
7162 | shlib_disabled breakpoint though. There's a fair chance we | |
7163 | can't re-set it if the shared library it's in hasn't been | |
7164 | loaded yet. */ | |
0101ce28 JJ |
7165 | |
7166 | if (b->pending) | |
7167 | break; | |
7168 | ||
b5de0fa7 | 7169 | save_enable = b->enable_state; |
b18c45ed AC |
7170 | if (b->enable_state != bp_shlib_disabled) |
7171 | b->enable_state = bp_disabled; | |
c906108c SS |
7172 | |
7173 | set_language (b->language); | |
7174 | input_radix = b->input_radix; | |
7175 | s = b->addr_string; | |
68219205 | 7176 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
7177 | for (i = 0; i < sals.nelts; i++) |
7178 | { | |
7179 | resolve_sal_pc (&sals.sals[i]); | |
7180 | ||
7181 | /* Reparse conditions, they might contain references to the | |
7182 | old symtab. */ | |
7183 | if (b->cond_string != NULL) | |
7184 | { | |
7185 | s = b->cond_string; | |
7186 | if (b->cond) | |
fad0733a DJ |
7187 | { |
7188 | xfree (b->cond); | |
7189 | /* Avoid re-freeing b->exp if an error during the call | |
7190 | to parse_exp_1. */ | |
7191 | b->cond = NULL; | |
7192 | } | |
c906108c SS |
7193 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7194 | } | |
7195 | ||
c5aa993b | 7196 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 7197 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
7198 | /* ...or new and old breakpoints both have source files, and |
7199 | the source file name or the line number changes... */ | |
c906108c SS |
7200 | || (b->source_file != NULL |
7201 | && sals.sals[i].symtab != NULL | |
6314a349 | 7202 | && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0 |
c906108c | 7203 | || b->line_number != sals.sals[i].line) |
c906108c | 7204 | ) |
c5aa993b JM |
7205 | /* ...or we switch between having a source file and not having |
7206 | one. */ | |
7207 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7208 | ) | |
c906108c SS |
7209 | { |
7210 | if (b->source_file != NULL) | |
b8c9b27d | 7211 | xfree (b->source_file); |
c906108c SS |
7212 | if (sals.sals[i].symtab == NULL) |
7213 | b->source_file = NULL; | |
7214 | else | |
7215 | b->source_file = | |
7216 | savestring (sals.sals[i].symtab->filename, | |
7217 | strlen (sals.sals[i].symtab->filename)); | |
7218 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
7219 | b->loc->requested_address = sals.sals[i].pc; |
7220 | b->loc->address | |
88f7da05 KB |
7221 | = adjust_breakpoint_address (b->loc->requested_address, |
7222 | b->type); | |
c906108c | 7223 | |
c5aa993b | 7224 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7225 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7226 | breakpoints. */ |
c906108c SS |
7227 | |
7228 | mention (b); | |
7229 | ||
7230 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7231 | rather than once for every breakpoint. */ |
c906108c SS |
7232 | breakpoints_changed (); |
7233 | } | |
cf3a9e5b | 7234 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 7235 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7236 | |
7237 | ||
c5aa993b | 7238 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7239 | can be used. */ |
9f60f21b | 7240 | check_duplicates (b); |
c906108c SS |
7241 | |
7242 | } | |
b8c9b27d | 7243 | xfree (sals.sals); |
c906108c SS |
7244 | break; |
7245 | ||
7246 | case bp_watchpoint: | |
7247 | case bp_hardware_watchpoint: | |
7248 | case bp_read_watchpoint: | |
7249 | case bp_access_watchpoint: | |
7250 | innermost_block = NULL; | |
53a5351d JM |
7251 | /* The issue arises of what context to evaluate this in. The |
7252 | same one as when it was set, but what does that mean when | |
7253 | symbols have been re-read? We could save the filename and | |
7254 | functionname, but if the context is more local than that, the | |
7255 | best we could do would be something like how many levels deep | |
7256 | and which index at that particular level, but that's going to | |
7257 | be less stable than filenames or function names. */ | |
7258 | ||
c906108c SS |
7259 | /* So for now, just use a global context. */ |
7260 | if (b->exp) | |
a355c7de AC |
7261 | { |
7262 | xfree (b->exp); | |
7263 | /* Avoid re-freeing b->exp if an error during the call to | |
7264 | parse_expression. */ | |
7265 | b->exp = NULL; | |
7266 | } | |
c906108c SS |
7267 | b->exp = parse_expression (b->exp_string); |
7268 | b->exp_valid_block = innermost_block; | |
7269 | mark = value_mark (); | |
7270 | if (b->val) | |
a355c7de AC |
7271 | { |
7272 | value_free (b->val); | |
7273 | /* Avoid re-freeing b->val if an error during the call to | |
7274 | evaluate_expression. */ | |
7275 | b->val = NULL; | |
7276 | } | |
c906108c SS |
7277 | b->val = evaluate_expression (b->exp); |
7278 | release_value (b->val); | |
468d015d | 7279 | if (VALUE_LAZY (b->val) && breakpoint_enabled (b)) |
c906108c SS |
7280 | value_fetch_lazy (b->val); |
7281 | ||
7282 | if (b->cond_string != NULL) | |
7283 | { | |
7284 | s = b->cond_string; | |
7285 | if (b->cond) | |
a355c7de AC |
7286 | { |
7287 | xfree (b->cond); | |
7288 | /* Avoid re-freeing b->exp if an error during the call | |
7289 | to parse_exp_1. */ | |
7290 | b->cond = NULL; | |
7291 | } | |
c5aa993b | 7292 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7293 | } |
468d015d | 7294 | if (breakpoint_enabled (b)) |
c906108c SS |
7295 | mention (b); |
7296 | value_free_to_mark (mark); | |
7297 | break; | |
c5aa993b JM |
7298 | case bp_catch_catch: |
7299 | case bp_catch_throw: | |
c906108c | 7300 | break; |
c5aa993b JM |
7301 | /* We needn't really do anything to reset these, since the mask |
7302 | that requests them is unaffected by e.g., new libraries being | |
7303 | loaded. */ | |
c906108c SS |
7304 | case bp_catch_fork: |
7305 | case bp_catch_vfork: | |
7306 | case bp_catch_exec: | |
7307 | break; | |
c5aa993b | 7308 | |
c906108c SS |
7309 | default: |
7310 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7311 | /* fall through */ | |
1900040c MS |
7312 | /* Delete longjmp and overlay event breakpoints; they will be |
7313 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7314 | case bp_longjmp: |
7315 | case bp_longjmp_resume: | |
1900040c | 7316 | case bp_overlay_event: |
c906108c SS |
7317 | delete_breakpoint (b); |
7318 | break; | |
7319 | ||
c5aa993b JM |
7320 | /* This breakpoint is special, it's set up when the inferior |
7321 | starts and we really don't want to touch it. */ | |
c906108c SS |
7322 | case bp_shlib_event: |
7323 | ||
c4093a6a JM |
7324 | /* Like bp_shlib_event, this breakpoint type is special. |
7325 | Once it is set up, we do not want to touch it. */ | |
7326 | case bp_thread_event: | |
7327 | ||
c5aa993b JM |
7328 | /* Keep temporary breakpoints, which can be encountered when we step |
7329 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7330 | Otherwise these should have been blown away via the cleanup chain | |
7331 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7332 | case bp_until: |
7333 | case bp_finish: | |
7334 | case bp_watchpoint_scope: | |
7335 | case bp_call_dummy: | |
7336 | case bp_step_resume: | |
7337 | break; | |
7338 | } | |
7339 | ||
7340 | return 0; | |
7341 | } | |
7342 | ||
7343 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7344 | void | |
fba45db2 | 7345 | breakpoint_re_set (void) |
c906108c SS |
7346 | { |
7347 | struct breakpoint *b, *temp; | |
7348 | enum language save_language; | |
7349 | int save_input_radix; | |
c5aa993b | 7350 | |
c906108c SS |
7351 | save_language = current_language->la_language; |
7352 | save_input_radix = input_radix; | |
7353 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7354 | { |
53a5351d | 7355 | /* Format possible error msg */ |
9ebf4acf AC |
7356 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7357 | b->number); | |
7358 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7359 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7360 | do_cleanups (cleanups); |
c5aa993b | 7361 | } |
c906108c SS |
7362 | set_language (save_language); |
7363 | input_radix = save_input_radix; | |
7364 | ||
9df628e0 RE |
7365 | if (GET_LONGJMP_TARGET_P ()) |
7366 | { | |
7367 | create_longjmp_breakpoint ("longjmp"); | |
7368 | create_longjmp_breakpoint ("_longjmp"); | |
7369 | create_longjmp_breakpoint ("siglongjmp"); | |
7370 | create_longjmp_breakpoint ("_siglongjmp"); | |
7371 | create_longjmp_breakpoint (NULL); | |
7372 | } | |
1900040c MS |
7373 | |
7374 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7375 | } |
7376 | \f | |
c906108c SS |
7377 | /* Reset the thread number of this breakpoint: |
7378 | ||
7379 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7380 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7381 | void |
fba45db2 | 7382 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7383 | { |
7384 | if (b->thread != -1) | |
7385 | { | |
39f77062 KB |
7386 | if (in_thread_list (inferior_ptid)) |
7387 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7388 | } |
7389 | } | |
7390 | ||
03ac34d5 MS |
7391 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7392 | If from_tty is nonzero, it prints a message to that effect, | |
7393 | which ends with a period (no newline). */ | |
7394 | ||
c906108c | 7395 | void |
fba45db2 | 7396 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7397 | { |
52f0bd74 | 7398 | struct breakpoint *b; |
c906108c SS |
7399 | |
7400 | if (count < 0) | |
7401 | count = 0; | |
7402 | ||
7403 | ALL_BREAKPOINTS (b) | |
7404 | if (b->number == bptnum) | |
c5aa993b JM |
7405 | { |
7406 | b->ignore_count = count; | |
221ea385 KS |
7407 | if (from_tty) |
7408 | { | |
7409 | if (count == 0) | |
7410 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7411 | bptnum); | |
7412 | else if (count == 1) | |
7413 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7414 | bptnum); | |
7415 | else | |
7416 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7417 | count, bptnum); | |
7418 | } | |
c5aa993b | 7419 | breakpoints_changed (); |
221ea385 | 7420 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7421 | return; |
7422 | } | |
c906108c SS |
7423 | |
7424 | error ("No breakpoint number %d.", bptnum); | |
7425 | } | |
7426 | ||
7427 | /* Clear the ignore counts of all breakpoints. */ | |
7428 | void | |
fba45db2 | 7429 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7430 | { |
7431 | struct breakpoint *b; | |
7432 | ||
7433 | ALL_BREAKPOINTS (b) | |
7434 | b->ignore_count = 0; | |
7435 | } | |
7436 | ||
7437 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7438 | ||
7439 | static void | |
fba45db2 | 7440 | ignore_command (char *args, int from_tty) |
c906108c SS |
7441 | { |
7442 | char *p = args; | |
52f0bd74 | 7443 | int num; |
c906108c SS |
7444 | |
7445 | if (p == 0) | |
7446 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7447 | |
c906108c | 7448 | num = get_number (&p); |
5c44784c JM |
7449 | if (num == 0) |
7450 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7451 | if (*p == 0) |
7452 | error ("Second argument (specified ignore-count) is missing."); | |
7453 | ||
7454 | set_ignore_count (num, | |
7455 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7456 | from_tty); | |
221ea385 KS |
7457 | if (from_tty) |
7458 | printf_filtered ("\n"); | |
c906108c SS |
7459 | } |
7460 | \f | |
7461 | /* Call FUNCTION on each of the breakpoints | |
7462 | whose numbers are given in ARGS. */ | |
7463 | ||
7464 | static void | |
831662b3 | 7465 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7466 | { |
52f0bd74 | 7467 | char *p = args; |
c906108c | 7468 | char *p1; |
52f0bd74 AC |
7469 | int num; |
7470 | struct breakpoint *b, *tmp; | |
11cf8741 | 7471 | int match; |
c906108c SS |
7472 | |
7473 | if (p == 0) | |
7474 | error_no_arg ("one or more breakpoint numbers"); | |
7475 | ||
7476 | while (*p) | |
7477 | { | |
11cf8741 | 7478 | match = 0; |
c906108c | 7479 | p1 = p; |
c5aa993b | 7480 | |
5c44784c JM |
7481 | num = get_number_or_range (&p1); |
7482 | if (num == 0) | |
c5aa993b | 7483 | { |
5c44784c JM |
7484 | warning ("bad breakpoint number at or near '%s'", p); |
7485 | } | |
7486 | else | |
7487 | { | |
7488 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7489 | if (b->number == num) | |
7490 | { | |
7491 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7492 | match = 1; |
5c44784c JM |
7493 | function (b); |
7494 | if (related_breakpoint) | |
7495 | function (related_breakpoint); | |
11cf8741 | 7496 | break; |
5c44784c | 7497 | } |
11cf8741 JM |
7498 | if (match == 0) |
7499 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7500 | } |
c906108c SS |
7501 | p = p1; |
7502 | } | |
7503 | } | |
7504 | ||
1900040c MS |
7505 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7506 | If from_tty is nonzero, it prints a message to that effect, | |
7507 | which ends with a period (no newline). */ | |
7508 | ||
c906108c | 7509 | void |
fba45db2 | 7510 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7511 | { |
7512 | /* Never disable a watchpoint scope breakpoint; we want to | |
7513 | hit them when we leave scope so we can delete both the | |
7514 | watchpoint and its scope breakpoint at that time. */ | |
7515 | if (bpt->type == bp_watchpoint_scope) | |
7516 | return; | |
7517 | ||
c2c6d25f | 7518 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7519 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7520 | return; |
7521 | ||
b5de0fa7 | 7522 | bpt->enable_state = bp_disabled; |
c906108c | 7523 | |
9f60f21b | 7524 | check_duplicates (bpt); |
c906108c | 7525 | |
9a4105ab AC |
7526 | if (deprecated_modify_breakpoint_hook) |
7527 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7528 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7529 | } |
7530 | ||
c906108c | 7531 | static void |
fba45db2 | 7532 | disable_command (char *args, int from_tty) |
c906108c | 7533 | { |
52f0bd74 | 7534 | struct breakpoint *bpt; |
c906108c SS |
7535 | if (args == 0) |
7536 | ALL_BREAKPOINTS (bpt) | |
7537 | switch (bpt->type) | |
c5aa993b JM |
7538 | { |
7539 | case bp_none: | |
53a5351d JM |
7540 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7541 | bpt->number); | |
c5aa993b JM |
7542 | continue; |
7543 | case bp_breakpoint: | |
7544 | case bp_catch_load: | |
7545 | case bp_catch_unload: | |
7546 | case bp_catch_fork: | |
7547 | case bp_catch_vfork: | |
7548 | case bp_catch_exec: | |
7549 | case bp_catch_catch: | |
7550 | case bp_catch_throw: | |
7551 | case bp_hardware_breakpoint: | |
7552 | case bp_watchpoint: | |
7553 | case bp_hardware_watchpoint: | |
7554 | case bp_read_watchpoint: | |
7555 | case bp_access_watchpoint: | |
7556 | disable_breakpoint (bpt); | |
7557 | default: | |
7558 | continue; | |
7559 | } | |
c906108c SS |
7560 | else |
7561 | map_breakpoint_numbers (args, disable_breakpoint); | |
7562 | } | |
7563 | ||
7564 | static void | |
fba45db2 | 7565 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7566 | { |
7567 | struct frame_info *save_selected_frame = NULL; | |
7568 | int save_selected_frame_level = -1; | |
7569 | int target_resources_ok, other_type_used; | |
7570 | struct value *mark; | |
7571 | ||
7572 | if (bpt->type == bp_hardware_breakpoint) | |
7573 | { | |
7574 | int i; | |
c5aa993b | 7575 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7576 | target_resources_ok = |
7577 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7578 | i + 1, 0); | |
c906108c | 7579 | if (target_resources_ok == 0) |
c5aa993b | 7580 | error ("No hardware breakpoint support in the target."); |
c906108c | 7581 | else if (target_resources_ok < 0) |
c5aa993b | 7582 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7583 | } |
7584 | ||
0101ce28 | 7585 | if (bpt->pending) |
c906108c | 7586 | { |
0101ce28 | 7587 | if (bpt->enable_state != bp_enabled) |
c906108c | 7588 | { |
0101ce28 JJ |
7589 | /* When enabling a pending breakpoint, we need to check if the breakpoint |
7590 | is resolvable since shared libraries could have been loaded | |
7591 | after the breakpoint was disabled. */ | |
7592 | breakpoints_changed (); | |
7593 | if (resolve_pending_breakpoint (bpt) == GDB_RC_OK) | |
c906108c | 7594 | { |
0101ce28 | 7595 | delete_breakpoint (bpt); |
c906108c SS |
7596 | return; |
7597 | } | |
0101ce28 JJ |
7598 | bpt->enable_state = bp_enabled; |
7599 | bpt->disposition = disposition; | |
c906108c | 7600 | } |
0101ce28 JJ |
7601 | } |
7602 | else /* Not a pending breakpoint. */ | |
7603 | { | |
7604 | if (bpt->enable_state != bp_permanent) | |
7605 | bpt->enable_state = bp_enabled; | |
7606 | bpt->disposition = disposition; | |
7607 | check_duplicates (bpt); | |
7608 | breakpoints_changed (); | |
7609 | ||
7610 | if (bpt->type == bp_watchpoint || | |
7611 | bpt->type == bp_hardware_watchpoint || | |
7612 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7613 | bpt->type == bp_access_watchpoint) |
7614 | { | |
0101ce28 JJ |
7615 | if (bpt->exp_valid_block != NULL) |
7616 | { | |
7617 | struct frame_info *fr = | |
7618 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7619 | if (fr == NULL) | |
7620 | { | |
7621 | printf_filtered ("\ | |
7622 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7623 | is valid is not currently in scope.\n", bpt->number); | |
7624 | bpt->enable_state = bp_disabled; | |
7625 | return; | |
7626 | } | |
7627 | ||
7628 | save_selected_frame = deprecated_selected_frame; | |
7629 | save_selected_frame_level = frame_relative_level (deprecated_selected_frame); | |
7630 | select_frame (fr); | |
7631 | } | |
7632 | ||
7633 | value_free (bpt->val); | |
7634 | mark = value_mark (); | |
7635 | bpt->val = evaluate_expression (bpt->exp); | |
7636 | release_value (bpt->val); | |
7637 | if (VALUE_LAZY (bpt->val)) | |
7638 | value_fetch_lazy (bpt->val); | |
7639 | ||
7640 | if (bpt->type == bp_hardware_watchpoint || | |
7641 | bpt->type == bp_read_watchpoint || | |
7642 | bpt->type == bp_access_watchpoint) | |
c5aa993b | 7643 | { |
0101ce28 JJ |
7644 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7645 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7646 | ||
7647 | /* Hack around 'unused var' error for some targets here */ | |
7648 | (void) mem_cnt, i; | |
7649 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7650 | bpt->type, i + mem_cnt, other_type_used); | |
7651 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7652 | bp_watchpoint in the following condition */ | |
7653 | if (target_resources_ok < 0) | |
7654 | { | |
7655 | printf_filtered ("\ | |
c906108c SS |
7656 | Cannot enable watchpoint %d because target watch resources\n\ |
7657 | have been allocated for other watchpoints.\n", bpt->number); | |
0101ce28 JJ |
7658 | bpt->enable_state = bp_disabled; |
7659 | value_free_to_mark (mark); | |
7660 | return; | |
7661 | } | |
c5aa993b | 7662 | } |
0101ce28 JJ |
7663 | |
7664 | if (save_selected_frame_level >= 0) | |
7665 | select_frame (save_selected_frame); | |
7666 | value_free_to_mark (mark); | |
c5aa993b | 7667 | } |
c906108c | 7668 | } |
0101ce28 | 7669 | |
9a4105ab AC |
7670 | if (deprecated_modify_breakpoint_hook) |
7671 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7672 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7673 | } |
7674 | ||
7675 | void | |
fba45db2 | 7676 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7677 | { |
7678 | do_enable_breakpoint (bpt, bpt->disposition); | |
7679 | } | |
7680 | ||
7681 | /* The enable command enables the specified breakpoints (or all defined | |
7682 | breakpoints) so they once again become (or continue to be) effective | |
7683 | in stopping the inferior. */ | |
7684 | ||
c906108c | 7685 | static void |
fba45db2 | 7686 | enable_command (char *args, int from_tty) |
c906108c | 7687 | { |
52f0bd74 | 7688 | struct breakpoint *bpt; |
c906108c SS |
7689 | if (args == 0) |
7690 | ALL_BREAKPOINTS (bpt) | |
7691 | switch (bpt->type) | |
c5aa993b JM |
7692 | { |
7693 | case bp_none: | |
53a5351d JM |
7694 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7695 | bpt->number); | |
c5aa993b JM |
7696 | continue; |
7697 | case bp_breakpoint: | |
7698 | case bp_catch_load: | |
7699 | case bp_catch_unload: | |
7700 | case bp_catch_fork: | |
7701 | case bp_catch_vfork: | |
7702 | case bp_catch_exec: | |
7703 | case bp_catch_catch: | |
7704 | case bp_catch_throw: | |
7705 | case bp_hardware_breakpoint: | |
7706 | case bp_watchpoint: | |
7707 | case bp_hardware_watchpoint: | |
7708 | case bp_read_watchpoint: | |
7709 | case bp_access_watchpoint: | |
7710 | enable_breakpoint (bpt); | |
7711 | default: | |
7712 | continue; | |
7713 | } | |
c906108c SS |
7714 | else |
7715 | map_breakpoint_numbers (args, enable_breakpoint); | |
7716 | } | |
7717 | ||
7718 | static void | |
fba45db2 | 7719 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7720 | { |
b5de0fa7 | 7721 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7722 | } |
7723 | ||
c906108c | 7724 | static void |
fba45db2 | 7725 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7726 | { |
7727 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7728 | } | |
7729 | ||
7730 | static void | |
fba45db2 | 7731 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7732 | { |
b5de0fa7 | 7733 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7734 | } |
7735 | ||
c906108c | 7736 | static void |
fba45db2 | 7737 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7738 | { |
7739 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7740 | } | |
7741 | \f | |
fa8d40ab JJ |
7742 | static void |
7743 | set_breakpoint_cmd (char *args, int from_tty) | |
7744 | { | |
7745 | } | |
7746 | ||
7747 | static void | |
7748 | show_breakpoint_cmd (char *args, int from_tty) | |
7749 | { | |
7750 | } | |
7751 | ||
c906108c SS |
7752 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7753 | ||
7754 | struct symtabs_and_lines | |
fba45db2 | 7755 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7756 | { |
7757 | struct symtabs_and_lines sals; | |
7758 | if (string == 0) | |
7759 | error ("Empty line specification."); | |
7760 | if (default_breakpoint_valid) | |
7761 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7762 | default_breakpoint_symtab, |
7763 | default_breakpoint_line, | |
68219205 | 7764 | (char ***) NULL, NULL); |
c906108c SS |
7765 | else |
7766 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7767 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
7768 | if (*string) |
7769 | error ("Junk at end of line specification: %s", string); | |
7770 | return sals; | |
7771 | } | |
7772 | \f | |
7773 | void | |
fba45db2 | 7774 | _initialize_breakpoint (void) |
c906108c | 7775 | { |
fa8d40ab JJ |
7776 | static struct cmd_list_element *breakpoint_set_cmdlist; |
7777 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
7778 | struct cmd_list_element *c; |
7779 | ||
7780 | breakpoint_chain = 0; | |
7781 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7782 | before a breakpoint is set. */ | |
7783 | breakpoint_count = 0; | |
7784 | ||
7785 | add_com ("ignore", class_breakpoint, ignore_command, | |
7786 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7787 | Usage is `ignore N COUNT'."); | |
7788 | if (xdb_commands) | |
c5aa993b | 7789 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7790 | |
7791 | add_com ("commands", class_breakpoint, commands_command, | |
7792 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7793 | Give breakpoint number as argument after \"commands\".\n\ | |
7794 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7795 | The commands themselves follow starting on the next line.\n\ | |
7796 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7797 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7798 | then no output is printed when it is hit, except what the commands print."); | |
7799 | ||
7800 | add_com ("condition", class_breakpoint, condition_command, | |
7801 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7802 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7803 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7804 | |
c94fdfd0 EZ |
7805 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7806 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7807 | Like \"break\" except the breakpoint is only temporary,\n\ |
7808 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7809 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7810 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7811 | |
c94fdfd0 EZ |
7812 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7813 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7814 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7815 | some target hardware may not have this support."); | |
5ba2abeb | 7816 | set_cmd_completer (c, location_completer); |
c906108c | 7817 | |
c94fdfd0 EZ |
7818 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7819 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7820 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7821 | so it will be deleted when hit."); | |
5ba2abeb | 7822 | set_cmd_completer (c, location_completer); |
c906108c SS |
7823 | |
7824 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7825 | "Enable some breakpoints.\n\ | |
7826 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7827 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7828 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7829 | With a subcommand you can enable temporarily.", | |
7830 | &enablelist, "enable ", 1, &cmdlist); | |
7831 | if (xdb_commands) | |
c5aa993b JM |
7832 | add_com ("ab", class_breakpoint, enable_command, |
7833 | "Enable some breakpoints.\n\ | |
c906108c SS |
7834 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7835 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7836 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7837 | With a subcommand you can enable temporarily."); | |
7838 | ||
7839 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7840 | ||
7841 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7842 | "Enable some breakpoints.\n\ |
c906108c SS |
7843 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7844 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7845 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7846 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7847 | |
7848 | add_cmd ("once", no_class, enable_once_command, | |
7849 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7850 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7851 | &enablebreaklist); | |
7852 | ||
7853 | add_cmd ("delete", no_class, enable_delete_command, | |
7854 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7855 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7856 | &enablebreaklist); | |
7857 | ||
7858 | add_cmd ("delete", no_class, enable_delete_command, | |
7859 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7860 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7861 | &enablelist); | |
7862 | ||
7863 | add_cmd ("once", no_class, enable_once_command, | |
7864 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7865 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7866 | &enablelist); | |
7867 | ||
7868 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7869 | "Disable some breakpoints.\n\ |
c906108c SS |
7870 | Arguments are breakpoint numbers with spaces in between.\n\ |
7871 | To disable all breakpoints, give no argument.\n\ | |
7872 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7873 | &disablelist, "disable ", 1, &cmdlist); | |
7874 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7875 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7876 | if (xdb_commands) | |
c5aa993b JM |
7877 | add_com ("sb", class_breakpoint, disable_command, |
7878 | "Disable some breakpoints.\n\ | |
c906108c SS |
7879 | Arguments are breakpoint numbers with spaces in between.\n\ |
7880 | To disable all breakpoints, give no argument.\n\ | |
7881 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7882 | ||
7883 | add_cmd ("breakpoints", class_alias, disable_command, | |
7884 | "Disable some breakpoints.\n\ | |
7885 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7886 | To disable all breakpoints, give no argument.\n\ | |
7887 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7888 | This command may be abbreviated \"disable\".", | |
7889 | &disablelist); | |
7890 | ||
7891 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7892 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7893 | Arguments are breakpoint numbers with spaces in between.\n\ |
7894 | To delete all breakpoints, give no argument.\n\ | |
7895 | \n\ | |
7896 | Also a prefix command for deletion of other GDB objects.\n\ | |
7897 | The \"unset\" command is also an alias for \"delete\".", | |
7898 | &deletelist, "delete ", 1, &cmdlist); | |
7899 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7900 | if (xdb_commands) | |
7901 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7902 | "Delete some breakpoints.\n\ |
c906108c SS |
7903 | Arguments are breakpoint numbers with spaces in between.\n\ |
7904 | To delete all breakpoints, give no argument.\n"); | |
7905 | ||
7906 | add_cmd ("breakpoints", class_alias, delete_command, | |
7907 | "Delete some breakpoints or auto-display expressions.\n\ | |
7908 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7909 | To delete all breakpoints, give no argument.\n\ | |
7910 | This command may be abbreviated \"delete\".", | |
7911 | &deletelist); | |
7912 | ||
7913 | add_com ("clear", class_breakpoint, clear_command, | |
7914 | concat ("Clear breakpoint at specified line or function.\n\ | |
7915 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7916 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7917 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7918 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7919 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7920 | is executing in.\n\ |
7921 | \n\ | |
7922 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7923 | ||
c94fdfd0 EZ |
7924 | c = add_com ("break", class_breakpoint, break_command, |
7925 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7926 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7927 | If line number is specified, break at start of code for that line.\n\ | |
7928 | If function is specified, break at start of code for that function.\n\ | |
7929 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7930 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7931 | This is useful for breaking on return to a stack frame.\n\ |
7932 | \n\ | |
7933 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7934 | \n\ | |
7935 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7936 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7937 | |
c906108c SS |
7938 | add_com_alias ("b", "break", class_run, 1); |
7939 | add_com_alias ("br", "break", class_run, 1); | |
7940 | add_com_alias ("bre", "break", class_run, 1); | |
7941 | add_com_alias ("brea", "break", class_run, 1); | |
7942 | ||
502fd408 | 7943 | if (xdb_commands) |
c906108c SS |
7944 | { |
7945 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7946 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7947 | } |
7948 | ||
7949 | if (dbx_commands) | |
7950 | { | |
c5aa993b JM |
7951 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7952 | "Break in function/address or break at a line in the current file.", | |
7953 | &stoplist, "stop ", 1, &cmdlist); | |
7954 | add_cmd ("in", class_breakpoint, stopin_command, | |
7955 | "Break in function or address.\n", &stoplist); | |
7956 | add_cmd ("at", class_breakpoint, stopat_command, | |
7957 | "Break at a line in the current file.\n", &stoplist); | |
7958 | add_com ("status", class_info, breakpoints_info, | |
7959 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7960 | The \"Type\" column indicates one of:\n\ |
7961 | \tbreakpoint - normal breakpoint\n\ | |
7962 | \twatchpoint - watchpoint\n\ | |
7963 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7964 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7965 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7966 | address and file/line number respectively.\n\n", | |
c5aa993b | 7967 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7968 | are set to the address of the last breakpoint listed.\n\n\ |
7969 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7970 | breakpoint set.", NULL)); | |
7971 | } | |
7972 | ||
7973 | add_info ("breakpoints", breakpoints_info, | |
7974 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7975 | The \"Type\" column indicates one of:\n\ | |
7976 | \tbreakpoint - normal breakpoint\n\ | |
7977 | \twatchpoint - watchpoint\n\ | |
7978 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7979 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7980 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7981 | address and file/line number respectively.\n\n", | |
c5aa993b | 7982 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7983 | are set to the address of the last breakpoint listed.\n\n\ |
7984 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7985 | breakpoint set.", NULL)); | |
7986 | ||
7987 | if (xdb_commands) | |
c5aa993b JM |
7988 | add_com ("lb", class_breakpoint, breakpoints_info, |
7989 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7990 | The \"Type\" column indicates one of:\n\ |
7991 | \tbreakpoint - normal breakpoint\n\ | |
7992 | \twatchpoint - watchpoint\n\ | |
7993 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7994 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7995 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7996 | address and file/line number respectively.\n\n", | |
c5aa993b | 7997 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7998 | are set to the address of the last breakpoint listed.\n\n\ |
7999 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
8000 | breakpoint set.", NULL)); | |
8001 | ||
c906108c | 8002 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 8003 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
8004 | The \"Type\" column indicates one of:\n\ |
8005 | \tbreakpoint - normal breakpoint\n\ | |
8006 | \twatchpoint - watchpoint\n\ | |
8007 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8008 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8009 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
8010 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 8011 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
8012 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8013 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
8014 | address and file/line number respectively.\n\n", | |
c5aa993b | 8015 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
8016 | are set to the address of the last breakpoint listed.\n\n\ |
8017 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
8018 | breakpoint set.", NULL), | |
8019 | &maintenanceinfolist); | |
8020 | ||
c906108c | 8021 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 8022 | "Set catchpoints to catch events.\n\ |
c906108c SS |
8023 | Raised signals may be caught:\n\ |
8024 | \tcatch signal - all signals\n\ | |
8025 | \tcatch signal <signame> - a particular signal\n\ | |
8026 | Raised exceptions may be caught:\n\ | |
8027 | \tcatch throw - all exceptions, when thrown\n\ | |
8028 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
8029 | \tcatch catch - all exceptions, when caught\n\ | |
8030 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
8031 | Thread or process events may be caught:\n\ | |
8032 | \tcatch thread_start - any threads, just after creation\n\ | |
8033 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8034 | \tcatch thread_join - any threads, just after joins\n\ | |
8035 | Process events may be caught:\n\ | |
8036 | \tcatch start - any processes, just after creation\n\ | |
8037 | \tcatch exit - any processes, just before expiration\n\ | |
8038 | \tcatch fork - calls to fork()\n\ | |
8039 | \tcatch vfork - calls to vfork()\n\ | |
8040 | \tcatch exec - calls to exec()\n\ | |
8041 | Dynamically-linked library events may be caught:\n\ | |
8042 | \tcatch load - loads of any library\n\ | |
8043 | \tcatch load <libname> - loads of a particular library\n\ | |
8044 | \tcatch unload - unloads of any library\n\ | |
8045 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8046 | The act of your program's execution stopping may also be caught:\n\ | |
8047 | \tcatch stop\n\n\ | |
8048 | C++ exceptions may be caught:\n\ | |
8049 | \tcatch throw - all exceptions, when thrown\n\ | |
8050 | \tcatch catch - all exceptions, when caught\n\ | |
8051 | \n\ | |
8052 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8053 | after a fork or vfork is caught.\n\n\ | |
8054 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 8055 | |
c906108c | 8056 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 8057 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
8058 | Args like \"catch\" command.\n\ |
8059 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8060 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
8061 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 8062 | |
c94fdfd0 EZ |
8063 | c = add_com ("watch", class_breakpoint, watch_command, |
8064 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
8065 | A watchpoint stops execution of your program whenever the value of\n\ |
8066 | an expression changes."); | |
5ba2abeb | 8067 | set_cmd_completer (c, location_completer); |
c906108c | 8068 | |
c94fdfd0 EZ |
8069 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
8070 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
8071 | A watchpoint stops execution of your program whenever the value of\n\ |
8072 | an expression is read."); | |
5ba2abeb | 8073 | set_cmd_completer (c, location_completer); |
c906108c | 8074 | |
c94fdfd0 EZ |
8075 | c = add_com ("awatch", class_breakpoint, awatch_command, |
8076 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
8077 | A watchpoint stops execution of your program whenever the value of\n\ |
8078 | an expression is either read or written."); | |
5ba2abeb | 8079 | set_cmd_completer (c, location_completer); |
c906108c SS |
8080 | |
8081 | add_info ("watchpoints", breakpoints_info, | |
8082 | "Synonym for ``info breakpoints''."); | |
8083 | ||
8084 | ||
8085 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
8086 | (char *) &can_use_hw_watchpoints, |
8087 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
8088 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8089 | such is available. (However, any hardware watchpoints that were\n\ | |
8090 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
8091 | hardware.)", | |
c5aa993b | 8092 | &setlist); |
c906108c SS |
8093 | add_show_from_set (c, &showlist); |
8094 | ||
8095 | can_use_hw_watchpoints = 1; | |
fa8d40ab JJ |
8096 | |
8097 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, "\ | |
8098 | Breakpoint specific settings\n\ | |
8099 | Configure various breakpoint-specific variables such as\n\ | |
8100 | pending breakpoint behavior", | |
8101 | &breakpoint_set_cmdlist, "set breakpoint ", | |
8102 | 0/*allow-unknown*/, &setlist); | |
8103 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, "\ | |
8104 | Breakpoint specific settings\n\ | |
8105 | Configure various breakpoint-specific variables such as\n\ | |
8106 | pending breakpoint behavior", | |
8107 | &breakpoint_show_cmdlist, "show breakpoint ", | |
8108 | 0/*allow-unknown*/, &showlist); | |
8109 | ||
6e1d7d6c AC |
8110 | add_setshow_auto_boolean_cmd ("pending", no_class, &pending_break_support, "\ |
8111 | Set debugger's behavior regarding pending breakpoints.\n\ | |
8112 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ | |
8113 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8114 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
8115 | user-query to see if a pending breakpoint should be created.","\ | |
8116 | Show debugger's behavior regarding pending breakpoints.\n\ | |
8117 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ | |
8118 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8119 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
8120 | user-query to see if a pending breakpoint should be created.", | |
8121 | NULL, NULL, | |
8122 | &breakpoint_set_cmdlist, | |
8123 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8124 | |
8125 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
c906108c | 8126 | } |