Commit | Line | Data |
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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 | ||
102 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr); | |
103 | ||
a14ed312 | 104 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 105 | |
a14ed312 | 106 | static void breakpoints_info (char *, int); |
c906108c | 107 | |
a14ed312 | 108 | static void breakpoint_1 (int, int); |
c906108c | 109 | |
a14ed312 | 110 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 111 | |
4efb68b1 | 112 | static int breakpoint_cond_eval (void *); |
c906108c | 113 | |
4efb68b1 | 114 | static void cleanup_executing_breakpoints (void *); |
c906108c | 115 | |
a14ed312 | 116 | static void commands_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void condition_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static int get_number_trailer (char **, int); |
c906108c | 121 | |
0101ce28 JJ |
122 | static int do_captured_parse_breakpoint (struct ui_out *, void *); |
123 | ||
a14ed312 | 124 | void set_breakpoint_count (int); |
c906108c | 125 | |
c5aa993b JM |
126 | typedef enum |
127 | { | |
128 | mark_inserted, | |
129 | mark_uninserted | |
130 | } | |
131 | insertion_state_t; | |
c906108c | 132 | |
0bde7532 | 133 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 134 | |
a14ed312 | 135 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
136 | |
137 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 138 | |
c5aa993b JM |
139 | typedef struct |
140 | { | |
141 | enum exception_event_kind kind; | |
b5de0fa7 | 142 | int enable_p; |
c5aa993b JM |
143 | } |
144 | args_for_catchpoint_enable; | |
c906108c | 145 | |
4efb68b1 | 146 | static int watchpoint_check (void *); |
c906108c | 147 | |
4efb68b1 | 148 | static int cover_target_enable_exception_callback (void *); |
c906108c | 149 | |
a14ed312 | 150 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 151 | |
a14ed312 | 152 | static void create_longjmp_breakpoint (char *); |
c906108c | 153 | |
1900040c MS |
154 | static void create_overlay_event_breakpoint (char *); |
155 | ||
a14ed312 | 156 | static int hw_breakpoint_used_count (void); |
c906108c | 157 | |
a14ed312 | 158 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 159 | |
a14ed312 | 160 | static void hbreak_command (char *, int); |
c906108c | 161 | |
a14ed312 | 162 | static void thbreak_command (char *, int); |
c906108c | 163 | |
a14ed312 | 164 | static void watch_command_1 (char *, int, int); |
c906108c | 165 | |
a14ed312 | 166 | static void rwatch_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static void awatch_command (char *, int); |
c906108c | 169 | |
a14ed312 | 170 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 171 | |
a14ed312 KB |
172 | static void solib_load_unload_1 (char *hookname, |
173 | int tempflag, | |
174 | char *dll_pathname, | |
175 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 176 | |
a14ed312 KB |
177 | static void create_fork_vfork_event_catchpoint (int tempflag, |
178 | char *cond_string, | |
179 | enum bptype bp_kind); | |
7a292a7a | 180 | |
a14ed312 KB |
181 | static void break_at_finish_at_depth_command_1 (char *arg, |
182 | int flag, int from_tty); | |
7a292a7a | 183 | |
a14ed312 | 184 | static void break_at_finish_command_1 (char *arg, int flag, int from_tty); |
7a292a7a | 185 | |
a14ed312 | 186 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 187 | |
a14ed312 | 188 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 189 | |
a14ed312 | 190 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 191 | |
a14ed312 | 192 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 193 | |
a14ed312 | 194 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 195 | |
a14ed312 | 196 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 197 | |
d85310f7 MS |
198 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
199 | enum exception_event_kind ex_event, | |
200 | struct symtab_and_line *sal); | |
7a292a7a | 201 | |
d85310f7 MS |
202 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
203 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 204 | |
a14ed312 | 205 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 206 | |
a14ed312 | 207 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 208 | |
c906108c SS |
209 | /* Prototypes for exported functions. */ |
210 | ||
c906108c SS |
211 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
212 | if such is available. */ | |
213 | static int can_use_hw_watchpoints; | |
214 | ||
a14ed312 | 215 | void _initialize_breakpoint (void); |
c906108c | 216 | |
c5aa993b | 217 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 218 | |
c906108c SS |
219 | /* Are we executing breakpoint commands? */ |
220 | static int executing_breakpoint_commands; | |
221 | ||
c02f5703 MS |
222 | /* Are overlay event breakpoints enabled? */ |
223 | static int overlay_events_enabled; | |
224 | ||
c906108c SS |
225 | /* Walk the following statement or block through all breakpoints. |
226 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
227 | breakpoint. */ | |
228 | ||
5c44784c | 229 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 230 | |
5c44784c JM |
231 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
232 | for (B = breakpoint_chain; \ | |
233 | B ? (TMP=B->next, 1): 0; \ | |
234 | B = TMP) | |
c906108c | 235 | |
7cc221ef DJ |
236 | /* Similar iterators for the low-level breakpoints. */ |
237 | ||
238 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
239 | ||
240 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
241 | for (B = bp_location_chain; \ | |
242 | B ? (TMP=B->next, 1): 0; \ | |
243 | B = TMP) | |
244 | ||
c906108c SS |
245 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
246 | ||
247 | int show_breakpoint_hit_counts = 1; | |
248 | ||
7cc221ef | 249 | /* Chains of all breakpoints defined. */ |
c906108c SS |
250 | |
251 | struct breakpoint *breakpoint_chain; | |
252 | ||
7cc221ef DJ |
253 | struct bp_location *bp_location_chain; |
254 | ||
c906108c SS |
255 | /* Number of last breakpoint made. */ |
256 | ||
257 | int breakpoint_count; | |
258 | ||
c5aa993b JM |
259 | /* Pointer to current exception event record */ |
260 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
261 | |
262 | /* Indicator of whether exception catchpoints should be nuked | |
263 | between runs of a program */ | |
264 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 265 | |
c906108c SS |
266 | /* Indicator of when exception catchpoints set-up should be |
267 | reinitialized -- e.g. when program is re-run */ | |
268 | int exception_support_initialized = 0; | |
269 | ||
270 | /* This function returns a pointer to the string representation of the | |
271 | pathname of the dynamically-linked library that has just been | |
272 | loaded. | |
273 | ||
274 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
275 | or undefined results are guaranteed. | |
276 | ||
277 | This string's contents are only valid immediately after the | |
278 | inferior has stopped in the dynamic linker hook, and becomes | |
279 | invalid as soon as the inferior is continued. Clients should make | |
280 | a copy of this string if they wish to continue the inferior and | |
281 | then access the string. */ | |
282 | ||
283 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
284 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
285 | #endif | |
286 | ||
287 | /* This function returns a pointer to the string representation of the | |
288 | pathname of the dynamically-linked library that has just been | |
289 | unloaded. | |
290 | ||
291 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
292 | TRUE, or undefined results are guaranteed. | |
293 | ||
294 | This string's contents are only valid immediately after the | |
295 | inferior has stopped in the dynamic linker hook, and becomes | |
296 | invalid as soon as the inferior is continued. Clients should make | |
297 | a copy of this string if they wish to continue the inferior and | |
298 | then access the string. */ | |
299 | ||
300 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
301 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
302 | #endif | |
303 | ||
304 | /* This function is called by the "catch load" command. It allows the | |
305 | debugger to be notified by the dynamic linker when a specified | |
306 | library file (or any library file, if filename is NULL) is loaded. */ | |
307 | ||
308 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
309 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
310 | error ("catch of library loads not yet implemented on this platform") | |
311 | #endif | |
312 | ||
313 | /* This function is called by the "catch unload" command. It allows | |
314 | the debugger to be notified by the dynamic linker when a specified | |
315 | library file (or any library file, if filename is NULL) is | |
316 | unloaded. */ | |
317 | ||
318 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
319 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
320 | error ("catch of library unloads not yet implemented on this platform") | |
321 | #endif | |
322 | ||
468d015d JJ |
323 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
324 | static int | |
325 | breakpoint_enabled (struct breakpoint *b) | |
326 | { | |
0101ce28 | 327 | return (b->enable_state == bp_enabled && !b->pending); |
468d015d JJ |
328 | } |
329 | ||
c906108c SS |
330 | /* Set breakpoint count to NUM. */ |
331 | ||
332 | void | |
fba45db2 | 333 | set_breakpoint_count (int num) |
c906108c SS |
334 | { |
335 | breakpoint_count = num; | |
336 | set_internalvar (lookup_internalvar ("bpnum"), | |
337 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
338 | } | |
339 | ||
340 | /* Used in run_command to zero the hit count when a new run starts. */ | |
341 | ||
342 | void | |
fba45db2 | 343 | clear_breakpoint_hit_counts (void) |
c906108c SS |
344 | { |
345 | struct breakpoint *b; | |
346 | ||
347 | ALL_BREAKPOINTS (b) | |
348 | b->hit_count = 0; | |
349 | } | |
350 | ||
351 | /* Default address, symtab and line to put a breakpoint at | |
352 | for "break" command with no arg. | |
353 | if default_breakpoint_valid is zero, the other three are | |
354 | not valid, and "break" with no arg is an error. | |
355 | ||
356 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
357 | ||
358 | int default_breakpoint_valid; | |
359 | CORE_ADDR default_breakpoint_address; | |
360 | struct symtab *default_breakpoint_symtab; | |
361 | int default_breakpoint_line; | |
362 | \f | |
363 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
364 | Advance *PP after the string and any trailing whitespace. | |
365 | ||
366 | Currently the string can either be a number or "$" followed by the name | |
367 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
368 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
369 | ||
370 | TRAILER is a character which can be found after the number; most | |
371 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 372 | static int |
fba45db2 | 373 | get_number_trailer (char **pp, int trailer) |
c906108c | 374 | { |
5c44784c | 375 | int retval = 0; /* default */ |
c906108c SS |
376 | char *p = *pp; |
377 | ||
378 | if (p == NULL) | |
379 | /* Empty line means refer to the last breakpoint. */ | |
380 | return breakpoint_count; | |
381 | else if (*p == '$') | |
382 | { | |
383 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 384 | to pass to lookup_internalvar(). */ |
c906108c SS |
385 | char *varname; |
386 | char *start = ++p; | |
278cd55f | 387 | struct value *val; |
c906108c SS |
388 | |
389 | while (isalnum (*p) || *p == '_') | |
390 | p++; | |
391 | varname = (char *) alloca (p - start + 1); | |
392 | strncpy (varname, start, p - start); | |
393 | varname[p - start] = '\0'; | |
394 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
395 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
396 | retval = (int) value_as_long (val); | |
397 | else | |
398 | { | |
399 | printf_filtered ("Convenience variable must have integer value.\n"); | |
400 | retval = 0; | |
401 | } | |
c906108c SS |
402 | } |
403 | else | |
404 | { | |
405 | if (*p == '-') | |
406 | ++p; | |
407 | while (*p >= '0' && *p <= '9') | |
408 | ++p; | |
409 | if (p == *pp) | |
410 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
411 | { |
412 | /* Skip non-numeric token */ | |
413 | while (*p && !isspace((int) *p)) | |
414 | ++p; | |
415 | /* Return zero, which caller must interpret as error. */ | |
416 | retval = 0; | |
417 | } | |
418 | else | |
419 | retval = atoi (*pp); | |
420 | } | |
421 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
422 | { | |
423 | /* Trailing junk: return 0 and let caller print error msg. */ | |
424 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
425 | ++p; | |
426 | retval = 0; | |
c906108c | 427 | } |
c906108c SS |
428 | while (isspace (*p)) |
429 | p++; | |
430 | *pp = p; | |
431 | return retval; | |
432 | } | |
5c44784c | 433 | |
11cf8741 | 434 | |
5c44784c JM |
435 | /* Like get_number_trailer, but don't allow a trailer. */ |
436 | int | |
fba45db2 | 437 | get_number (char **pp) |
5c44784c JM |
438 | { |
439 | return get_number_trailer (pp, '\0'); | |
440 | } | |
441 | ||
442 | /* Parse a number or a range. | |
443 | * A number will be of the form handled by get_number. | |
444 | * A range will be of the form <number1> - <number2>, and | |
445 | * will represent all the integers between number1 and number2, | |
446 | * inclusive. | |
447 | * | |
448 | * While processing a range, this fuction is called iteratively; | |
449 | * At each call it will return the next value in the range. | |
450 | * | |
451 | * At the beginning of parsing a range, the char pointer PP will | |
452 | * be advanced past <number1> and left pointing at the '-' token. | |
453 | * Subsequent calls will not advance the pointer until the range | |
454 | * is completed. The call that completes the range will advance | |
455 | * pointer PP past <number2>. | |
456 | */ | |
457 | ||
458 | int | |
fba45db2 | 459 | get_number_or_range (char **pp) |
5c44784c JM |
460 | { |
461 | static int last_retval, end_value; | |
462 | static char *end_ptr; | |
463 | static int in_range = 0; | |
464 | ||
465 | if (**pp != '-') | |
466 | { | |
467 | /* Default case: pp is pointing either to a solo number, | |
468 | or to the first number of a range. */ | |
469 | last_retval = get_number_trailer (pp, '-'); | |
470 | if (**pp == '-') | |
471 | { | |
472 | char **temp; | |
473 | ||
474 | /* This is the start of a range (<number1> - <number2>). | |
475 | Skip the '-', parse and remember the second number, | |
476 | and also remember the end of the final token. */ | |
477 | ||
478 | temp = &end_ptr; | |
479 | end_ptr = *pp + 1; | |
480 | while (isspace ((int) *end_ptr)) | |
481 | end_ptr++; /* skip white space */ | |
482 | end_value = get_number (temp); | |
483 | if (end_value < last_retval) | |
484 | { | |
485 | error ("inverted range"); | |
486 | } | |
487 | else if (end_value == last_retval) | |
488 | { | |
489 | /* degenerate range (number1 == number2). Advance the | |
490 | token pointer so that the range will be treated as a | |
491 | single number. */ | |
492 | *pp = end_ptr; | |
493 | } | |
494 | else | |
495 | in_range = 1; | |
496 | } | |
497 | } | |
498 | else if (! in_range) | |
499 | error ("negative value"); | |
500 | else | |
501 | { | |
502 | /* pp points to the '-' that betokens a range. All | |
503 | number-parsing has already been done. Return the next | |
504 | integer value (one greater than the saved previous value). | |
505 | Do not advance the token pointer 'pp' until the end of range | |
506 | is reached. */ | |
507 | ||
508 | if (++last_retval == end_value) | |
509 | { | |
510 | /* End of range reached; advance token pointer. */ | |
511 | *pp = end_ptr; | |
512 | in_range = 0; | |
513 | } | |
514 | } | |
515 | return last_retval; | |
516 | } | |
517 | ||
518 | ||
c906108c SS |
519 | \f |
520 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
521 | ||
522 | static void | |
fba45db2 | 523 | condition_command (char *arg, int from_tty) |
c906108c | 524 | { |
52f0bd74 | 525 | struct breakpoint *b; |
c906108c | 526 | char *p; |
52f0bd74 | 527 | int bnum; |
c906108c SS |
528 | |
529 | if (arg == 0) | |
530 | error_no_arg ("breakpoint number"); | |
531 | ||
532 | p = arg; | |
533 | bnum = get_number (&p); | |
5c44784c JM |
534 | if (bnum == 0) |
535 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
536 | |
537 | ALL_BREAKPOINTS (b) | |
538 | if (b->number == bnum) | |
c5aa993b JM |
539 | { |
540 | if (b->cond) | |
541 | { | |
b8c9b27d | 542 | xfree (b->cond); |
c5aa993b JM |
543 | b->cond = 0; |
544 | } | |
545 | if (b->cond_string != NULL) | |
b8c9b27d | 546 | xfree (b->cond_string); |
c906108c | 547 | |
c5aa993b JM |
548 | if (*p == 0) |
549 | { | |
550 | b->cond = 0; | |
551 | b->cond_string = NULL; | |
552 | if (from_tty) | |
553 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
554 | } | |
555 | else | |
556 | { | |
557 | arg = p; | |
558 | /* I don't know if it matters whether this is the string the user | |
559 | typed in or the decompiled expression. */ | |
560 | b->cond_string = savestring (arg, strlen (arg)); | |
0101ce28 JJ |
561 | if (!b->pending) |
562 | { | |
563 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
564 | if (*arg) | |
565 | error ("Junk at end of expression"); | |
566 | } | |
c5aa993b JM |
567 | } |
568 | breakpoints_changed (); | |
221ea385 | 569 | breakpoint_modify_event (b->number); |
c5aa993b JM |
570 | return; |
571 | } | |
c906108c SS |
572 | |
573 | error ("No breakpoint number %d.", bnum); | |
574 | } | |
575 | ||
c906108c | 576 | static void |
fba45db2 | 577 | commands_command (char *arg, int from_tty) |
c906108c | 578 | { |
52f0bd74 | 579 | struct breakpoint *b; |
c906108c | 580 | char *p; |
52f0bd74 | 581 | int bnum; |
c906108c SS |
582 | struct command_line *l; |
583 | ||
584 | /* If we allowed this, we would have problems with when to | |
585 | free the storage, if we change the commands currently | |
586 | being read from. */ | |
587 | ||
588 | if (executing_breakpoint_commands) | |
589 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
590 | ||
591 | p = arg; | |
592 | bnum = get_number (&p); | |
5c44784c | 593 | |
c906108c SS |
594 | if (p && *p) |
595 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 596 | |
c906108c SS |
597 | ALL_BREAKPOINTS (b) |
598 | if (b->number == bnum) | |
9ebf4acf AC |
599 | { |
600 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
601 | bnum); | |
602 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
603 | l = read_command_lines (tmpbuf, from_tty); | |
604 | do_cleanups (cleanups); | |
605 | free_command_lines (&b->commands); | |
606 | b->commands = l; | |
607 | breakpoints_changed (); | |
608 | breakpoint_modify_event (b->number); | |
609 | return; | |
c5aa993b | 610 | } |
c906108c SS |
611 | error ("No breakpoint number %d.", bnum); |
612 | } | |
613 | \f | |
614 | /* Like target_read_memory() but if breakpoints are inserted, return | |
615 | the shadow contents instead of the breakpoints themselves. | |
616 | ||
617 | Read "memory data" from whatever target or inferior we have. | |
618 | Returns zero if successful, errno value if not. EIO is used | |
619 | for address out of bounds. If breakpoints are inserted, returns | |
620 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
621 | ||
622 | int | |
fba45db2 | 623 | read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
624 | { |
625 | int status; | |
ffce0d52 | 626 | struct bp_location *b; |
c906108c SS |
627 | CORE_ADDR bp_addr = 0; |
628 | int bp_size = 0; | |
629 | ||
630 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
631 | /* No breakpoints on this machine. */ | |
632 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 633 | |
ffce0d52 | 634 | ALL_BP_LOCATIONS (b) |
c5aa993b | 635 | { |
ffce0d52 DJ |
636 | if (b->owner->type == bp_none) |
637 | warning ("reading through apparently deleted breakpoint #%d?", | |
638 | b->owner->number); | |
639 | ||
640 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 641 | continue; |
ffce0d52 | 642 | if (!b->inserted) |
c5aa993b JM |
643 | continue; |
644 | /* Addresses and length of the part of the breakpoint that | |
645 | we need to copy. */ | |
646 | /* XXXX The m68k, sh and h8300 have different local and remote | |
647 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
648 | correctly determine the breakpoints memory address and size | |
649 | for these targets. */ | |
ffce0d52 | 650 | bp_addr = b->address; |
c5aa993b JM |
651 | bp_size = 0; |
652 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
653 | continue; | |
654 | if (bp_size == 0) | |
655 | /* bp isn't valid */ | |
656 | continue; | |
657 | if (bp_addr + bp_size <= memaddr) | |
658 | /* The breakpoint is entirely before the chunk of memory we | |
659 | are reading. */ | |
660 | continue; | |
661 | if (bp_addr >= memaddr + len) | |
662 | /* The breakpoint is entirely after the chunk of memory we are | |
663 | reading. */ | |
664 | continue; | |
665 | /* Copy the breakpoint from the shadow contents, and recurse for | |
666 | the things before and after. */ | |
c906108c | 667 | { |
c5aa993b JM |
668 | /* Offset within shadow_contents. */ |
669 | int bptoffset = 0; | |
c906108c | 670 | |
c5aa993b JM |
671 | if (bp_addr < memaddr) |
672 | { | |
673 | /* Only copy the second part of the breakpoint. */ | |
674 | bp_size -= memaddr - bp_addr; | |
675 | bptoffset = memaddr - bp_addr; | |
676 | bp_addr = memaddr; | |
677 | } | |
678 | ||
679 | if (bp_addr + bp_size > memaddr + len) | |
680 | { | |
681 | /* Only copy the first part of the breakpoint. */ | |
682 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
683 | } | |
684 | ||
685 | memcpy (myaddr + bp_addr - memaddr, | |
ffce0d52 | 686 | b->shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
687 | |
688 | if (bp_addr > memaddr) | |
689 | { | |
690 | /* Copy the section of memory before the breakpoint. */ | |
691 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
692 | if (status != 0) | |
693 | return status; | |
694 | } | |
695 | ||
696 | if (bp_addr + bp_size < memaddr + len) | |
697 | { | |
698 | /* Copy the section of memory after the breakpoint. */ | |
d85310f7 MS |
699 | status = read_memory_nobpt (bp_addr + bp_size, |
700 | myaddr + bp_addr + bp_size - memaddr, | |
701 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
702 | if (status != 0) |
703 | return status; | |
704 | } | |
705 | return 0; | |
c906108c | 706 | } |
c5aa993b | 707 | } |
c906108c SS |
708 | /* Nothing overlaps. Just call read_memory_noerr. */ |
709 | return target_read_memory (memaddr, myaddr, len); | |
710 | } | |
c906108c | 711 | \f |
c5aa993b | 712 | |
687595f9 | 713 | /* A wrapper function for inserting catchpoints. */ |
3f8091c1 | 714 | static int |
687595f9 DJ |
715 | insert_catchpoint (struct ui_out *uo, void *args) |
716 | { | |
717 | struct breakpoint *b = (struct breakpoint *) args; | |
718 | int val = -1; | |
719 | ||
720 | switch (b->type) | |
721 | { | |
722 | case bp_catch_fork: | |
723 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
724 | break; | |
725 | case bp_catch_vfork: | |
726 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
727 | break; | |
728 | case bp_catch_exec: | |
729 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); | |
730 | break; | |
731 | default: | |
1171114a | 732 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); |
687595f9 DJ |
733 | break; |
734 | } | |
735 | ||
736 | if (val < 0) | |
737 | throw_exception (RETURN_ERROR); | |
738 | ||
739 | return 0; | |
740 | } | |
741 | ||
879bfdc2 DJ |
742 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
743 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
744 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
745 | ||
746 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
747 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 748 | static int |
879bfdc2 | 749 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
750 | struct ui_file *tmp_error_stream, |
751 | int *disabled_breaks, int *process_warning, | |
752 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
753 | { |
754 | int val = 0; | |
755 | ||
756 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
757 | breakpoints should not be inserted. */ | |
468d015d | 758 | if (!breakpoint_enabled (bpt->owner)) |
879bfdc2 DJ |
759 | return 0; |
760 | ||
761 | if (bpt->inserted || bpt->duplicate) | |
762 | return 0; | |
763 | ||
764 | if (bpt->loc_type == bp_loc_software_breakpoint | |
765 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
766 | { | |
767 | /* First check to see if we have to handle an overlay. */ | |
768 | if (overlay_debugging == ovly_off | |
769 | || bpt->section == NULL | |
770 | || !(section_is_overlay (bpt->section))) | |
771 | { | |
772 | /* No overlay handling: just set the breakpoint. */ | |
773 | ||
774 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
775 | val = target_insert_hw_breakpoint (bpt->address, | |
776 | bpt->shadow_contents); | |
777 | else | |
778 | val = target_insert_breakpoint (bpt->address, | |
779 | bpt->shadow_contents); | |
780 | } | |
781 | else | |
782 | { | |
783 | /* This breakpoint is in an overlay section. | |
784 | Shall we set a breakpoint at the LMA? */ | |
785 | if (!overlay_events_enabled) | |
786 | { | |
787 | /* Yes -- overlay event support is not active, | |
788 | so we must try to set a breakpoint at the LMA. | |
789 | This will not work for a hardware breakpoint. */ | |
790 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
791 | warning ("hardware breakpoint %d not supported in overlay!\n", | |
792 | bpt->owner->number); | |
793 | else | |
794 | { | |
795 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
796 | bpt->section); | |
797 | /* Set a software (trap) breakpoint at the LMA. */ | |
798 | val = target_insert_breakpoint (addr, bpt->shadow_contents); | |
799 | if (val != 0) | |
800 | fprintf_unfiltered (tmp_error_stream, | |
801 | "Overlay breakpoint %d failed: in ROM?", | |
802 | bpt->owner->number); | |
803 | } | |
804 | } | |
805 | /* Shall we set a breakpoint at the VMA? */ | |
806 | if (section_is_mapped (bpt->section)) | |
807 | { | |
808 | /* Yes. This overlay section is mapped into memory. */ | |
809 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
810 | val = target_insert_hw_breakpoint (bpt->address, | |
811 | bpt->shadow_contents); | |
812 | else | |
813 | val = target_insert_breakpoint (bpt->address, | |
814 | bpt->shadow_contents); | |
815 | } | |
816 | else | |
817 | { | |
818 | /* No. This breakpoint will not be inserted. | |
819 | No error, but do not mark the bp as 'inserted'. */ | |
820 | return 0; | |
821 | } | |
822 | } | |
823 | ||
824 | if (val) | |
825 | { | |
826 | /* Can't set the breakpoint. */ | |
827 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
828 | if (DISABLE_UNSETTABLE_BREAK (bpt->address)) | |
829 | { | |
830 | /* See also: disable_breakpoints_in_shlibs. */ | |
831 | val = 0; | |
832 | bpt->owner->enable_state = bp_shlib_disabled; | |
833 | if (!*disabled_breaks) | |
834 | { | |
835 | fprintf_unfiltered (tmp_error_stream, | |
836 | "Cannot insert breakpoint %d.\n", | |
837 | bpt->owner->number); | |
838 | fprintf_unfiltered (tmp_error_stream, | |
839 | "Temporarily disabling shared library breakpoints:\n"); | |
840 | } | |
841 | *disabled_breaks = 1; | |
842 | fprintf_unfiltered (tmp_error_stream, | |
843 | "breakpoint #%d\n", bpt->owner->number); | |
844 | } | |
845 | else | |
846 | #endif | |
847 | { | |
848 | #ifdef ONE_PROCESS_WRITETEXT | |
849 | *process_warning = 1; | |
850 | #endif | |
851 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
852 | { | |
853 | *hw_breakpoint_error = 1; | |
854 | fprintf_unfiltered (tmp_error_stream, | |
855 | "Cannot insert hardware breakpoint %d.\n", | |
856 | bpt->owner->number); | |
857 | } | |
858 | else | |
859 | { | |
860 | fprintf_unfiltered (tmp_error_stream, | |
861 | "Cannot insert breakpoint %d.\n", | |
862 | bpt->owner->number); | |
863 | fprintf_filtered (tmp_error_stream, | |
864 | "Error accessing memory address "); | |
865 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
866 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
867 | safe_strerror (val)); | |
868 | } | |
869 | ||
870 | } | |
871 | } | |
872 | else | |
873 | bpt->inserted = 1; | |
874 | ||
875 | return val; | |
876 | } | |
877 | ||
878 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
879 | /* NOTE drow/2003-09-08: This state only exists for removing | |
880 | watchpoints. It's not clear that it's necessary... */ | |
881 | && bpt->owner->disposition != disp_del_at_next_stop) | |
882 | { | |
883 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
884 | based on the expression. Ideally this should happen at a higher level, | |
885 | and there should be one bp_location for each computed address we | |
886 | must watch. As soon as a many-to-one mapping is available I'll | |
887 | convert this. */ | |
888 | ||
889 | struct frame_info *saved_frame; | |
890 | int saved_level, within_current_scope; | |
891 | struct value *mark = value_mark (); | |
892 | struct value *v; | |
893 | ||
894 | /* Save the current frame and level so we can restore it after | |
895 | evaluating the watchpoint expression on its own frame. */ | |
896 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
897 | took a frame parameter, so that we didn't have to change the | |
898 | selected frame. */ | |
899 | saved_frame = deprecated_selected_frame; | |
900 | saved_level = frame_relative_level (deprecated_selected_frame); | |
901 | ||
902 | /* Determine if the watchpoint is within scope. */ | |
903 | if (bpt->owner->exp_valid_block == NULL) | |
904 | within_current_scope = 1; | |
905 | else | |
906 | { | |
907 | struct frame_info *fi; | |
908 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
909 | within_current_scope = (fi != NULL); | |
910 | if (within_current_scope) | |
911 | select_frame (fi); | |
912 | } | |
913 | ||
914 | if (within_current_scope) | |
915 | { | |
916 | /* Evaluate the expression and cut the chain of values | |
917 | produced off from the value chain. | |
918 | ||
919 | Make sure the value returned isn't lazy; we use | |
920 | laziness to determine what memory GDB actually needed | |
921 | in order to compute the value of the expression. */ | |
922 | v = evaluate_expression (bpt->owner->exp); | |
923 | VALUE_CONTENTS (v); | |
924 | value_release_to_mark (mark); | |
925 | ||
926 | bpt->owner->val_chain = v; | |
927 | bpt->inserted = 1; | |
928 | ||
929 | /* Look at each value on the value chain. */ | |
930 | for (; v; v = v->next) | |
931 | { | |
932 | /* If it's a memory location, and GDB actually needed | |
933 | its contents to evaluate the expression, then we | |
934 | must watch it. */ | |
935 | if (VALUE_LVAL (v) == lval_memory | |
936 | && ! VALUE_LAZY (v)) | |
937 | { | |
938 | struct type *vtype = check_typedef (VALUE_TYPE (v)); | |
939 | ||
940 | /* We only watch structs and arrays if user asked | |
941 | for it explicitly, never if they just happen to | |
942 | appear in the middle of some value chain. */ | |
943 | if (v == bpt->owner->val_chain | |
944 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
945 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
946 | { | |
947 | CORE_ADDR addr; | |
948 | int len, type; | |
949 | ||
950 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
951 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
952 | type = hw_write; | |
953 | if (bpt->owner->type == bp_read_watchpoint) | |
954 | type = hw_read; | |
955 | else if (bpt->owner->type == bp_access_watchpoint) | |
956 | type = hw_access; | |
957 | ||
958 | val = target_insert_watchpoint (addr, len, type); | |
959 | if (val == -1) | |
960 | { | |
961 | /* Don't exit the loop, try to insert | |
962 | every value on the value chain. That's | |
963 | because we will be removing all the | |
964 | watches below, and removing a | |
965 | watchpoint we didn't insert could have | |
966 | adverse effects. */ | |
967 | bpt->inserted = 0; | |
968 | } | |
969 | val = 0; | |
970 | } | |
971 | } | |
972 | } | |
973 | /* Failure to insert a watchpoint on any memory value in the | |
974 | value chain brings us here. */ | |
975 | if (!bpt->inserted) | |
976 | { | |
0bde7532 | 977 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
978 | *hw_breakpoint_error = 1; |
979 | fprintf_unfiltered (tmp_error_stream, | |
980 | "Could not insert hardware watchpoint %d.\n", | |
981 | bpt->owner->number); | |
982 | val = -1; | |
983 | } | |
984 | } | |
985 | else | |
986 | { | |
987 | printf_filtered ("Hardware watchpoint %d deleted ", bpt->owner->number); | |
988 | printf_filtered ("because the program has left the block \n"); | |
989 | printf_filtered ("in which its expression is valid.\n"); | |
990 | if (bpt->owner->related_breakpoint) | |
991 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
992 | bpt->owner->disposition = disp_del_at_next_stop; | |
993 | } | |
994 | ||
995 | /* Restore the frame and level. */ | |
996 | if (saved_frame != deprecated_selected_frame | |
997 | || saved_level != frame_relative_level (deprecated_selected_frame)) | |
998 | select_frame (saved_frame); | |
999 | ||
1000 | return val; | |
1001 | } | |
1002 | ||
1003 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
1004 | { | |
1005 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1006 | breakpoint. Once again, it would be better if this was represented | |
1007 | as two bp_locations. */ | |
1008 | ||
1009 | /* If we get here, we must have a callback mechanism for exception | |
1010 | events -- with g++ style embedded label support, we insert | |
1011 | ordinary breakpoints and not catchpoints. */ | |
1012 | val = target_insert_breakpoint (bpt->address, bpt->shadow_contents); | |
1013 | if (val) | |
1014 | { | |
1015 | /* Couldn't set breakpoint for some reason */ | |
1016 | fprintf_unfiltered (tmp_error_stream, | |
1017 | "Cannot insert catchpoint %d; disabling it.\n", | |
1018 | bpt->owner->number); | |
1019 | fprintf_filtered (tmp_error_stream, | |
1020 | "Error accessing memory address "); | |
1021 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
1022 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
1023 | safe_strerror (val)); | |
1024 | bpt->owner->enable_state = bp_disabled; | |
1025 | } | |
1026 | else | |
1027 | { | |
1028 | /* Bp set, now make sure callbacks are enabled */ | |
1029 | /* Format possible error msg */ | |
1030 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1031 | bpt->owner->number); | |
1032 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1033 | int val; | |
1034 | args_for_catchpoint_enable args; | |
1035 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1036 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1037 | args.enable_p = 1; | |
1038 | val = catch_errors (cover_target_enable_exception_callback, | |
1039 | &args, message, RETURN_MASK_ALL); | |
1040 | do_cleanups (cleanups); | |
1041 | if (val != 0 && val != -1) | |
1042 | bpt->inserted = 1; | |
1043 | ||
1044 | /* Check if something went wrong; val == 0 can be ignored */ | |
1045 | if (val == -1) | |
1046 | { | |
1047 | /* something went wrong */ | |
1048 | fprintf_unfiltered (tmp_error_stream, | |
1049 | "Cannot insert catchpoint %d; disabling it.\n", | |
1050 | bpt->owner->number); | |
1051 | bpt->owner->enable_state = bp_disabled; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | return val; | |
1056 | } | |
1057 | ||
1058 | else if (bpt->owner->type == bp_catch_fork | |
1059 | || bpt->owner->type == bp_catch_vfork | |
1060 | || bpt->owner->type == bp_catch_exec) | |
1061 | { | |
1062 | char *prefix = xstrprintf ("warning: inserting catchpoint %d: ", | |
1063 | bpt->owner->number); | |
1064 | struct cleanup *cleanups = make_cleanup (xfree, prefix); | |
1065 | val = catch_exceptions (uiout, insert_catchpoint, bpt->owner, prefix, | |
1066 | RETURN_MASK_ERROR); | |
1067 | do_cleanups (cleanups); | |
1068 | if (val < 0) | |
1069 | bpt->owner->enable_state = bp_disabled; | |
1070 | else | |
1071 | bpt->inserted = 1; | |
1640b821 DJ |
1072 | |
1073 | /* We've already printed an error message if there was a problem | |
1074 | inserting this catchpoint, and we've disabled the catchpoint, | |
1075 | so just return success. */ | |
1076 | return 0; | |
879bfdc2 DJ |
1077 | } |
1078 | ||
1079 | return 0; | |
1080 | } | |
1081 | ||
c906108c SS |
1082 | /* insert_breakpoints is used when starting or continuing the program. |
1083 | remove_breakpoints is used when the program stops. | |
1084 | Both return zero if successful, | |
1085 | or an `errno' value if could not write the inferior. */ | |
1086 | ||
1087 | int | |
fba45db2 | 1088 | insert_breakpoints (void) |
c906108c | 1089 | { |
879bfdc2 | 1090 | struct bp_location *b, *temp; |
53a5351d | 1091 | int return_val = 0; /* return success code. */ |
c906108c SS |
1092 | int val = 0; |
1093 | int disabled_breaks = 0; | |
81d0cc19 GS |
1094 | int hw_breakpoint_error = 0; |
1095 | int process_warning = 0; | |
c906108c | 1096 | |
81d0cc19 GS |
1097 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1098 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1099 | ||
1100 | /* Explicitly mark the warning -- this will only be printed if | |
1101 | there was an error. */ | |
1102 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1103 | |
879bfdc2 DJ |
1104 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1105 | { | |
1106 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1107 | breakpoints should not be inserted. */ | |
468d015d | 1108 | if (!breakpoint_enabled (b->owner)) |
879bfdc2 DJ |
1109 | continue; |
1110 | ||
1111 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when | |
1112 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1113 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1114 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1115 | { | |
1116 | struct value *val; | |
1117 | val = evaluate_expression (b->owner->exp); | |
1118 | release_value (val); | |
1119 | if (VALUE_LAZY (val)) | |
1120 | value_fetch_lazy (val); | |
1121 | b->owner->val = val; | |
1122 | } | |
a881cf8e | 1123 | |
879bfdc2 DJ |
1124 | val = insert_bp_location (b, tmp_error_stream, |
1125 | &disabled_breaks, &process_warning, | |
1126 | &hw_breakpoint_error); | |
1127 | if (val) | |
1128 | return_val = val; | |
1129 | } | |
c906108c | 1130 | |
879bfdc2 | 1131 | if (return_val) |
81d0cc19 GS |
1132 | { |
1133 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1134 | message about possibly exhausted resources. */ | |
879bfdc2 | 1135 | if (hw_breakpoint_error) |
81d0cc19 | 1136 | { |
c6510018 MS |
1137 | fprintf_unfiltered (tmp_error_stream, |
1138 | "Could not insert hardware breakpoints:\n\ | |
1139 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1140 | } |
c6510018 | 1141 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1142 | if (process_warning) |
c6510018 MS |
1143 | fprintf_unfiltered (tmp_error_stream, |
1144 | "The same program may be running in another process."); | |
1145 | #endif | |
81d0cc19 GS |
1146 | target_terminal_ours_for_output (); |
1147 | error_stream (tmp_error_stream); | |
1148 | } | |
53a5351d | 1149 | return return_val; |
c906108c SS |
1150 | } |
1151 | ||
c906108c | 1152 | int |
fba45db2 | 1153 | remove_breakpoints (void) |
c906108c | 1154 | { |
0bde7532 | 1155 | struct bp_location *b; |
c906108c SS |
1156 | int val; |
1157 | ||
0bde7532 | 1158 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1159 | { |
0bde7532 | 1160 | if (b->inserted) |
c5aa993b JM |
1161 | { |
1162 | val = remove_breakpoint (b, mark_uninserted); | |
1163 | if (val != 0) | |
1164 | return val; | |
1165 | } | |
1166 | } | |
c906108c SS |
1167 | return 0; |
1168 | } | |
1169 | ||
692590c1 | 1170 | int |
80ce1ecb | 1171 | remove_hw_watchpoints (void) |
692590c1 | 1172 | { |
0bde7532 | 1173 | struct bp_location *b; |
692590c1 MS |
1174 | int val; |
1175 | ||
0bde7532 | 1176 | ALL_BP_LOCATIONS (b) |
692590c1 | 1177 | { |
0bde7532 | 1178 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1179 | { |
1180 | val = remove_breakpoint (b, mark_uninserted); | |
1181 | if (val != 0) | |
1182 | return val; | |
1183 | } | |
1184 | } | |
1185 | return 0; | |
1186 | } | |
1187 | ||
c906108c | 1188 | int |
fba45db2 | 1189 | reattach_breakpoints (int pid) |
c906108c | 1190 | { |
0bde7532 | 1191 | struct bp_location *b; |
c906108c | 1192 | int val; |
ce696e05 | 1193 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1194 | |
ce696e05 KB |
1195 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1196 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1197 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1198 | { |
0bde7532 | 1199 | if (b->inserted) |
c5aa993b JM |
1200 | { |
1201 | remove_breakpoint (b, mark_inserted); | |
0bde7532 DJ |
1202 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1203 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
c5aa993b | 1204 | else |
0bde7532 DJ |
1205 | val = target_insert_breakpoint (b->address, b->shadow_contents); |
1206 | /* FIXME drow/2003-10-07: This doesn't handle any other kinds of | |
1207 | breakpoints. It's wrong for watchpoints, for example. */ | |
c5aa993b JM |
1208 | if (val != 0) |
1209 | { | |
ce696e05 | 1210 | do_cleanups (old_chain); |
c5aa993b JM |
1211 | return val; |
1212 | } | |
1213 | } | |
1214 | } | |
ce696e05 | 1215 | do_cleanups (old_chain); |
c906108c SS |
1216 | return 0; |
1217 | } | |
1218 | ||
1219 | void | |
fba45db2 | 1220 | update_breakpoints_after_exec (void) |
c906108c | 1221 | { |
c5aa993b JM |
1222 | struct breakpoint *b; |
1223 | struct breakpoint *temp; | |
c906108c SS |
1224 | |
1225 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1226 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1227 | shadow is NOT valid after an exec()! */ | |
1228 | mark_breakpoints_out (); | |
1229 | ||
1230 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1231 | { |
1232 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1233 | if (b->type == bp_shlib_event) | |
1234 | { | |
1235 | delete_breakpoint (b); | |
1236 | continue; | |
1237 | } | |
c906108c | 1238 | |
1900040c MS |
1239 | /* Thread event breakpoints must be set anew after an exec(), |
1240 | as must overlay event breakpoints. */ | |
1241 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1242 | { |
1243 | delete_breakpoint (b); | |
1244 | continue; | |
1245 | } | |
1246 | ||
c5aa993b JM |
1247 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1248 | if (b->type == bp_step_resume) | |
1249 | { | |
1250 | delete_breakpoint (b); | |
1251 | continue; | |
1252 | } | |
1253 | ||
1254 | /* Ditto the sigtramp handler breakpoints. */ | |
1255 | if (b->type == bp_through_sigtramp) | |
1256 | { | |
1257 | delete_breakpoint (b); | |
1258 | continue; | |
1259 | } | |
1260 | ||
1261 | /* Ditto the exception-handling catchpoints. */ | |
1262 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1263 | { | |
1264 | delete_breakpoint (b); | |
1265 | continue; | |
1266 | } | |
1267 | ||
1268 | /* Don't delete an exec catchpoint, because else the inferior | |
1269 | won't stop when it ought! | |
1270 | ||
1271 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1272 | on this target, we may not be able to stop when the vfork is |
1273 | seen, but only when the subsequent exec is seen. (And because | |
1274 | deleting fork catchpoints here but not vfork catchpoints will | |
1275 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1276 | |
1277 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1278 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1279 | automagically. Certainly on HP-UX that's true. |
1280 | ||
1281 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
41989fcd AC |
1282 | valid code address on some platforms (like the mn10300 |
1283 | simulators). We shouldn't assign any special interpretation to | |
1284 | a breakpoint with a zero address. And in fact, GDB doesn't --- | |
1285 | I can't see what that comment above is talking about. As far | |
1286 | as I can tell, setting the address of a | |
644a1fe1 JB |
1287 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero |
1288 | is meaningless, since those are implemented with HP-UX kernel | |
1289 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1290 | if ((b->type == bp_catch_exec) || |
1291 | (b->type == bp_catch_vfork) || | |
1292 | (b->type == bp_catch_fork)) | |
1293 | { | |
5cab636d | 1294 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b JM |
1295 | continue; |
1296 | } | |
1297 | ||
1298 | /* bp_finish is a special case. The only way we ought to be able | |
1299 | to see one of these when an exec() has happened, is if the user | |
1300 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1301 | carries them to the call-site of the current callee, by setting | |
1302 | a temporary bp there and resuming. But in this case, the finish | |
1303 | will carry them entirely through the vfork & exec. | |
1304 | ||
1305 | We don't want to allow a bp_finish to remain inserted now. But | |
1306 | we can't safely delete it, 'cause finish_command has a handle to | |
1307 | the bp on a bpstat, and will later want to delete it. There's a | |
1308 | chance (and I've seen it happen) that if we delete the bp_finish | |
1309 | here, that its storage will get reused by the time finish_command | |
1310 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1311 | We really must allow finish_command to delete a bp_finish. | |
1312 | ||
53a5351d JM |
1313 | In the absense of a general solution for the "how do we know |
1314 | it's safe to delete something others may have handles to?" | |
1315 | problem, what we'll do here is just uninsert the bp_finish, and | |
1316 | let finish_command delete it. | |
1317 | ||
1318 | (We know the bp_finish is "doomed" in the sense that it's | |
1319 | momentary, and will be deleted as soon as finish_command sees | |
1320 | the inferior stopped. So it doesn't matter that the bp's | |
1321 | address is probably bogus in the new a.out, unlike e.g., the | |
1322 | solib breakpoints.) */ | |
c5aa993b | 1323 | |
c5aa993b JM |
1324 | if (b->type == bp_finish) |
1325 | { | |
1326 | continue; | |
1327 | } | |
1328 | ||
1329 | /* Without a symbolic address, we have little hope of the | |
1330 | pre-exec() address meaning the same thing in the post-exec() | |
1331 | a.out. */ | |
1332 | if (b->addr_string == NULL) | |
1333 | { | |
1334 | delete_breakpoint (b); | |
1335 | continue; | |
1336 | } | |
1337 | ||
1338 | /* If this breakpoint has survived the above battery of checks, then | |
1339 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1340 | to a target address, rather than reusing the old evaluation. |
1341 | ||
1342 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1343 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1344 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1345 | the breakpoint's address from scratch, or deletes it if it can't. | |
1346 | So I think this assignment could be deleted without effect. */ | |
5cab636d | 1347 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b | 1348 | } |
1900040c MS |
1349 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1350 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1351 | } |
1352 | ||
1353 | int | |
fba45db2 | 1354 | detach_breakpoints (int pid) |
c906108c | 1355 | { |
0bde7532 | 1356 | struct bp_location *b; |
c906108c | 1357 | int val; |
ce696e05 | 1358 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1359 | |
39f77062 KB |
1360 | if (pid == PIDGET (inferior_ptid)) |
1361 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1362 | |
ce696e05 KB |
1363 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1364 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1365 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1366 | { |
0bde7532 | 1367 | if (b->inserted) |
c5aa993b JM |
1368 | { |
1369 | val = remove_breakpoint (b, mark_inserted); | |
1370 | if (val != 0) | |
1371 | { | |
ce696e05 | 1372 | do_cleanups (old_chain); |
c5aa993b JM |
1373 | return val; |
1374 | } | |
1375 | } | |
1376 | } | |
ce696e05 | 1377 | do_cleanups (old_chain); |
c906108c SS |
1378 | return 0; |
1379 | } | |
1380 | ||
1381 | static int | |
0bde7532 | 1382 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1383 | { |
1384 | int val; | |
c5aa993b | 1385 | |
0bde7532 | 1386 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1387 | /* Permanent breakpoints cannot be inserted or removed. */ |
1388 | return 0; | |
1389 | ||
0bde7532 | 1390 | if (b->owner->type == bp_none) |
53a5351d | 1391 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
0bde7532 DJ |
1392 | b->owner->number); |
1393 | ||
1394 | if (b->loc_type == bp_loc_software_breakpoint | |
1395 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1396 | { |
c02f5703 MS |
1397 | /* "Normal" instruction breakpoint: either the standard |
1398 | trap-instruction bp (bp_breakpoint), or a | |
1399 | bp_hardware_breakpoint. */ | |
1400 | ||
1401 | /* First check to see if we have to handle an overlay. */ | |
1402 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1403 | || b->section == NULL |
1404 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1405 | { |
1406 | /* No overlay handling: just remove the breakpoint. */ | |
1407 | ||
0bde7532 DJ |
1408 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1409 | val = target_remove_hw_breakpoint (b->address, | |
1410 | b->shadow_contents); | |
c02f5703 | 1411 | else |
0bde7532 | 1412 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c02f5703 | 1413 | } |
c906108c SS |
1414 | else |
1415 | { | |
c02f5703 MS |
1416 | /* This breakpoint is in an overlay section. |
1417 | Did we set a breakpoint at the LMA? */ | |
1418 | if (!overlay_events_enabled) | |
1419 | { | |
1420 | /* Yes -- overlay event support is not active, so we | |
1421 | should have set a breakpoint at the LMA. Remove it. | |
1422 | */ | |
0bde7532 DJ |
1423 | CORE_ADDR addr = overlay_unmapped_address (b->address, |
1424 | b->section); | |
c02f5703 MS |
1425 | /* Ignore any failures: if the LMA is in ROM, we will |
1426 | have already warned when we failed to insert it. */ | |
0bde7532 DJ |
1427 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1428 | target_remove_hw_breakpoint (addr, b->shadow_contents); | |
c02f5703 | 1429 | else |
0bde7532 | 1430 | target_remove_breakpoint (addr, b->shadow_contents); |
c02f5703 MS |
1431 | } |
1432 | /* Did we set a breakpoint at the VMA? | |
1433 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1434 | if (b->inserted) |
c906108c | 1435 | { |
c02f5703 MS |
1436 | /* Yes -- remove it. Previously we did not bother to |
1437 | remove the breakpoint if the section had been | |
1438 | unmapped, but let's not rely on that being safe. We | |
1439 | don't know what the overlay manager might do. */ | |
0bde7532 DJ |
1440 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1441 | val = target_remove_hw_breakpoint (b->address, | |
1442 | b->shadow_contents); | |
c02f5703 | 1443 | else |
0bde7532 DJ |
1444 | val = target_remove_breakpoint (b->address, |
1445 | b->shadow_contents); | |
c906108c | 1446 | } |
c02f5703 MS |
1447 | else |
1448 | { | |
1449 | /* No -- not inserted, so no need to remove. No error. */ | |
1450 | val = 0; | |
1451 | } | |
c906108c SS |
1452 | } |
1453 | if (val) | |
1454 | return val; | |
0bde7532 | 1455 | b->inserted = (is == mark_inserted); |
c906108c | 1456 | } |
0bde7532 | 1457 | else if (b->loc_type == bp_loc_hardware_watchpoint |
468d015d | 1458 | && breakpoint_enabled (b->owner) |
0bde7532 | 1459 | && !b->duplicate) |
c906108c | 1460 | { |
278cd55f AC |
1461 | struct value *v; |
1462 | struct value *n; | |
c5aa993b | 1463 | |
0bde7532 | 1464 | b->inserted = (is == mark_inserted); |
c906108c | 1465 | /* Walk down the saved value chain. */ |
0bde7532 | 1466 | for (v = b->owner->val_chain; v; v = v->next) |
c906108c SS |
1467 | { |
1468 | /* For each memory reference remove the watchpoint | |
1469 | at that address. */ | |
5c44784c JM |
1470 | if (VALUE_LVAL (v) == lval_memory |
1471 | && ! VALUE_LAZY (v)) | |
c906108c | 1472 | { |
2e70b7b9 MS |
1473 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1474 | ||
0bde7532 | 1475 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1476 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1477 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1478 | { | |
1479 | CORE_ADDR addr; | |
1480 | int len, type; | |
1481 | ||
1482 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1483 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1484 | type = hw_write; | |
0bde7532 | 1485 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1486 | type = hw_read; |
0bde7532 | 1487 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1488 | type = hw_access; |
1489 | ||
1490 | val = target_remove_watchpoint (addr, len, type); | |
1491 | if (val == -1) | |
0bde7532 | 1492 | b->inserted = 1; |
2e70b7b9 MS |
1493 | val = 0; |
1494 | } | |
c906108c SS |
1495 | } |
1496 | } | |
1497 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1498 | if ((is == mark_uninserted) && (b->inserted)) |
53a5351d | 1499 | warning ("Could not remove hardware watchpoint %d.", |
0bde7532 | 1500 | b->owner->number); |
c5aa993b | 1501 | |
c906108c | 1502 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1503 | the next time the watchpoint is inserted. */ |
0bde7532 | 1504 | for (v = b->owner->val_chain; v; v = n) |
c906108c SS |
1505 | { |
1506 | n = v->next; | |
1507 | value_free (v); | |
1508 | } | |
0bde7532 | 1509 | b->owner->val_chain = NULL; |
c906108c | 1510 | } |
0bde7532 DJ |
1511 | else if ((b->owner->type == bp_catch_fork || |
1512 | b->owner->type == bp_catch_vfork || | |
1513 | b->owner->type == bp_catch_exec) | |
468d015d | 1514 | && breakpoint_enabled (b->owner) |
0bde7532 | 1515 | && !b->duplicate) |
c906108c SS |
1516 | { |
1517 | val = -1; | |
0bde7532 | 1518 | switch (b->owner->type) |
c5aa993b JM |
1519 | { |
1520 | case bp_catch_fork: | |
39f77062 | 1521 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1522 | break; |
1523 | case bp_catch_vfork: | |
39f77062 | 1524 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1525 | break; |
1526 | case bp_catch_exec: | |
39f77062 | 1527 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1528 | break; |
ac9a91a7 | 1529 | default: |
53a5351d | 1530 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1531 | break; |
c5aa993b | 1532 | } |
c906108c SS |
1533 | if (val) |
1534 | return val; | |
0bde7532 | 1535 | b->inserted = (is == mark_inserted); |
c906108c | 1536 | } |
0bde7532 DJ |
1537 | else if ((b->owner->type == bp_catch_catch || |
1538 | b->owner->type == bp_catch_throw) | |
468d015d | 1539 | && breakpoint_enabled (b->owner) |
0bde7532 | 1540 | && !b->duplicate) |
c906108c SS |
1541 | { |
1542 | ||
0bde7532 | 1543 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1544 | if (val) |
c5aa993b | 1545 | return val; |
0bde7532 | 1546 | b->inserted = (is == mark_inserted); |
c906108c | 1547 | } |
0bde7532 DJ |
1548 | else if (ep_is_exception_catchpoint (b->owner) |
1549 | && b->inserted /* sometimes previous insert doesn't happen */ | |
468d015d | 1550 | && breakpoint_enabled (b->owner) |
0bde7532 | 1551 | && !b->duplicate) |
c906108c SS |
1552 | { |
1553 | ||
0bde7532 | 1554 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1555 | if (val) |
c5aa993b JM |
1556 | return val; |
1557 | ||
0bde7532 | 1558 | b->inserted = (is == mark_inserted); |
c906108c SS |
1559 | } |
1560 | ||
1561 | return 0; | |
1562 | } | |
1563 | ||
1564 | /* Clear the "inserted" flag in all breakpoints. */ | |
1565 | ||
1566 | void | |
fba45db2 | 1567 | mark_breakpoints_out (void) |
c906108c | 1568 | { |
075f6582 | 1569 | struct bp_location *bpt; |
c906108c | 1570 | |
075f6582 DJ |
1571 | ALL_BP_LOCATIONS (bpt) |
1572 | bpt->inserted = 0; | |
c906108c SS |
1573 | } |
1574 | ||
53a5351d JM |
1575 | /* Clear the "inserted" flag in all breakpoints and delete any |
1576 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1577 | |
1578 | Plus other such housekeeping that has to be done for breakpoints | |
1579 | between runs. | |
1580 | ||
53a5351d JM |
1581 | Note: this function gets called at the end of a run (by |
1582 | generic_mourn_inferior) and when a run begins (by | |
1583 | init_wait_for_inferior). */ | |
c906108c SS |
1584 | |
1585 | ||
1586 | ||
1587 | void | |
fba45db2 | 1588 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1589 | { |
52f0bd74 | 1590 | struct breakpoint *b, *temp; |
075f6582 | 1591 | struct bp_location *bpt; |
c906108c SS |
1592 | static int warning_needed = 0; |
1593 | ||
075f6582 DJ |
1594 | ALL_BP_LOCATIONS (bpt) |
1595 | bpt->inserted = 0; | |
1596 | ||
c906108c | 1597 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1598 | { |
c5aa993b JM |
1599 | switch (b->type) |
1600 | { | |
1601 | case bp_call_dummy: | |
1602 | case bp_watchpoint_scope: | |
c906108c | 1603 | |
c5aa993b JM |
1604 | /* If the call dummy breakpoint is at the entry point it will |
1605 | cause problems when the inferior is rerun, so we better | |
1606 | get rid of it. | |
c906108c | 1607 | |
c5aa993b JM |
1608 | Also get rid of scope breakpoints. */ |
1609 | delete_breakpoint (b); | |
1610 | break; | |
c906108c | 1611 | |
c5aa993b JM |
1612 | case bp_watchpoint: |
1613 | case bp_hardware_watchpoint: | |
1614 | case bp_read_watchpoint: | |
1615 | case bp_access_watchpoint: | |
c906108c | 1616 | |
c5aa993b JM |
1617 | /* Likewise for watchpoints on local expressions. */ |
1618 | if (b->exp_valid_block != NULL) | |
1619 | delete_breakpoint (b); | |
c860120c PM |
1620 | if (context == inf_starting) |
1621 | { | |
1622 | /* Reset val field to force reread of starting value | |
1623 | in insert_breakpoints. */ | |
1624 | if (b->val) | |
1625 | value_free (b->val); | |
1626 | b->val = NULL; | |
1627 | } | |
c5aa993b JM |
1628 | break; |
1629 | default: | |
1630 | /* Likewise for exception catchpoints in dynamic-linked | |
1631 | executables where required */ | |
1632 | if (ep_is_exception_catchpoint (b) && | |
1633 | exception_catchpoints_are_fragile) | |
1634 | { | |
1635 | warning_needed = 1; | |
c906108c | 1636 | delete_breakpoint (b); |
c5aa993b JM |
1637 | } |
1638 | break; | |
1639 | } | |
1640 | } | |
c906108c SS |
1641 | |
1642 | if (exception_catchpoints_are_fragile) | |
1643 | exception_support_initialized = 0; | |
1644 | ||
c5aa993b | 1645 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1646 | if (warning_needed && (context != inf_exited)) |
1647 | { | |
53a5351d JM |
1648 | warning ("Exception catchpoints from last run were deleted."); |
1649 | warning ("You must reinsert them explicitly."); | |
c906108c | 1650 | warning_needed = 0; |
c5aa993b | 1651 | } |
c906108c SS |
1652 | } |
1653 | ||
c2c6d25f JM |
1654 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1655 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1656 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1657 | permanent breakpoint. | |
1658 | - When continuing from a location with an ordinary breakpoint, we | |
1659 | actually single step once before calling insert_breakpoints. | |
1660 | - When continuing from a localion with a permanent breakpoint, we | |
1661 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1662 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1663 | |
c2c6d25f | 1664 | enum breakpoint_here |
fba45db2 | 1665 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1666 | { |
075f6582 | 1667 | struct bp_location *bpt; |
c2c6d25f | 1668 | int any_breakpoint_here = 0; |
c906108c | 1669 | |
075f6582 DJ |
1670 | ALL_BP_LOCATIONS (bpt) |
1671 | { | |
1672 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1673 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1674 | continue; | |
1675 | ||
468d015d | 1676 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1677 | || bpt->owner->enable_state == bp_permanent) |
1678 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1679 | { | |
1680 | if (overlay_debugging | |
1681 | && section_is_overlay (bpt->section) | |
1682 | && !section_is_mapped (bpt->section)) | |
1683 | continue; /* unmapped overlay -- can't be a match */ | |
1684 | else if (bpt->owner->enable_state == bp_permanent) | |
1685 | return permanent_breakpoint_here; | |
1686 | else | |
1687 | any_breakpoint_here = 1; | |
1688 | } | |
1689 | } | |
c906108c | 1690 | |
c2c6d25f | 1691 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1692 | } |
1693 | ||
c2c6d25f | 1694 | |
53a5351d JM |
1695 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1696 | but it only returns true if there is actually a breakpoint inserted | |
1697 | at PC. */ | |
c906108c SS |
1698 | |
1699 | int | |
fba45db2 | 1700 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1701 | { |
075f6582 | 1702 | struct bp_location *bpt; |
c906108c | 1703 | |
075f6582 | 1704 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1705 | { |
075f6582 DJ |
1706 | if (bpt->loc_type != bp_loc_software_breakpoint |
1707 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1708 | continue; | |
1709 | ||
1710 | if (bpt->inserted | |
1711 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1712 | { | |
1713 | if (overlay_debugging | |
1714 | && section_is_overlay (bpt->section) | |
1715 | && !section_is_mapped (bpt->section)) | |
1716 | continue; /* unmapped overlay -- can't be a match */ | |
1717 | else | |
1718 | return 1; | |
1719 | } | |
c5aa993b | 1720 | } |
c906108c SS |
1721 | |
1722 | return 0; | |
1723 | } | |
1724 | ||
4fa8626c DJ |
1725 | /* This function returns non-zero iff there is a software breakpoint |
1726 | inserted at PC. */ | |
1727 | ||
1728 | int | |
1729 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1730 | { | |
1731 | struct bp_location *bpt; | |
1732 | int any_breakpoint_here = 0; | |
1733 | ||
1734 | ALL_BP_LOCATIONS (bpt) | |
1735 | { | |
1736 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1737 | continue; | |
1738 | ||
1739 | if ((breakpoint_enabled (bpt->owner) | |
1740 | || bpt->owner->enable_state == bp_permanent) | |
1741 | && bpt->inserted | |
1742 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1743 | { | |
1744 | if (overlay_debugging | |
1745 | && section_is_overlay (bpt->section) | |
1746 | && !section_is_mapped (bpt->section)) | |
1747 | continue; /* unmapped overlay -- can't be a match */ | |
1748 | else | |
1749 | return 1; | |
1750 | } | |
1751 | } | |
1752 | ||
1753 | return 0; | |
1754 | } | |
1755 | ||
53a5351d | 1756 | /* Return nonzero if FRAME is a dummy frame. We can't use |
ae45cd16 | 1757 | DEPRECATED_PC_IN_CALL_DUMMY because figuring out the saved SP would |
ac2adee5 | 1758 | take too much time, at least using frame_register() on the 68k. |
ae45cd16 | 1759 | This means that for this function to work right a port must use the |
53a5351d | 1760 | bp_call_dummy breakpoint. */ |
c906108c SS |
1761 | |
1762 | int | |
bf1e52be | 1763 | deprecated_frame_in_dummy (struct frame_info *frame) |
c906108c | 1764 | { |
c906108c SS |
1765 | struct breakpoint *b; |
1766 | ||
0225421b | 1767 | /* This function is used by two files: get_frame_type(), after first |
07555a72 AC |
1768 | checking that !DEPRECATED_USE_GENERIC_DUMMY_FRAMES; and |
1769 | sparc-tdep.c, which doesn't yet use generic dummy frames anyway. */ | |
1770 | gdb_assert (!DEPRECATED_USE_GENERIC_DUMMY_FRAMES); | |
c5aa993b | 1771 | |
c906108c | 1772 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1773 | { |
1774 | if (b->type == bp_call_dummy | |
818dd999 | 1775 | && frame_id_eq (b->frame_id, get_frame_id (frame)) |
c5aa993b JM |
1776 | /* We need to check the PC as well as the frame on the sparc, |
1777 | for signals.exp in the testsuite. */ | |
bdd78e62 | 1778 | && (get_frame_pc (frame) |
5cab636d | 1779 | >= (b->loc->address |
b1e29e33 | 1780 | - DEPRECATED_SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * DEPRECATED_REGISTER_SIZE)) |
5cab636d | 1781 | && get_frame_pc (frame) <= b->loc->address) |
c5aa993b JM |
1782 | return 1; |
1783 | } | |
c906108c SS |
1784 | return 0; |
1785 | } | |
1786 | ||
075f6582 DJ |
1787 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1788 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1789 | |
1790 | int | |
39f77062 | 1791 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1792 | { |
075f6582 | 1793 | struct bp_location *bpt; |
c906108c SS |
1794 | int thread; |
1795 | ||
39f77062 | 1796 | thread = pid_to_thread_id (ptid); |
c906108c | 1797 | |
075f6582 | 1798 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1799 | { |
075f6582 DJ |
1800 | if (bpt->loc_type != bp_loc_software_breakpoint |
1801 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1802 | continue; | |
1803 | ||
468d015d | 1804 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1805 | || bpt->owner->enable_state == bp_permanent) |
1806 | && bpt->address == pc | |
1807 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1808 | { | |
1809 | if (overlay_debugging | |
1810 | && section_is_overlay (bpt->section) | |
1811 | && !section_is_mapped (bpt->section)) | |
1812 | continue; /* unmapped overlay -- can't be a match */ | |
1813 | else | |
1814 | return 1; | |
1815 | } | |
c5aa993b | 1816 | } |
c906108c SS |
1817 | |
1818 | return 0; | |
1819 | } | |
c906108c | 1820 | \f |
c5aa993b | 1821 | |
c906108c SS |
1822 | /* bpstat stuff. External routines' interfaces are documented |
1823 | in breakpoint.h. */ | |
1824 | ||
1825 | int | |
fba45db2 | 1826 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1827 | { |
1828 | return | |
1829 | (ep->type == bp_catch_load) | |
1830 | || (ep->type == bp_catch_unload) | |
1831 | || (ep->type == bp_catch_fork) | |
1832 | || (ep->type == bp_catch_vfork) | |
1833 | || (ep->type == bp_catch_exec) | |
1834 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1835 | || (ep->type == bp_catch_throw); |
c906108c | 1836 | |
c5aa993b | 1837 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1838 | } |
c5aa993b | 1839 | |
c906108c | 1840 | int |
fba45db2 | 1841 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1842 | { |
1843 | return | |
1844 | (ep->type == bp_catch_load) | |
d85310f7 | 1845 | || (ep->type == bp_catch_unload); |
c906108c SS |
1846 | } |
1847 | ||
1848 | int | |
fba45db2 | 1849 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1850 | { |
1851 | return | |
1852 | (ep->type == bp_catch_catch) | |
d85310f7 | 1853 | || (ep->type == bp_catch_throw); |
c906108c SS |
1854 | } |
1855 | ||
1856 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1857 | Also free any storage that is part of a bpstat. */ | |
1858 | ||
1859 | void | |
fba45db2 | 1860 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1861 | { |
1862 | bpstat p; | |
1863 | bpstat q; | |
1864 | ||
1865 | if (bsp == 0) | |
1866 | return; | |
1867 | p = *bsp; | |
1868 | while (p != NULL) | |
1869 | { | |
1870 | q = p->next; | |
1871 | if (p->old_val != NULL) | |
1872 | value_free (p->old_val); | |
c2b8ed2c | 1873 | free_command_lines (&p->commands); |
b8c9b27d | 1874 | xfree (p); |
c906108c SS |
1875 | p = q; |
1876 | } | |
1877 | *bsp = NULL; | |
1878 | } | |
1879 | ||
1880 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1881 | is part of the bpstat is copied as well. */ | |
1882 | ||
1883 | bpstat | |
fba45db2 | 1884 | bpstat_copy (bpstat bs) |
c906108c SS |
1885 | { |
1886 | bpstat p = NULL; | |
1887 | bpstat tmp; | |
1888 | bpstat retval = NULL; | |
1889 | ||
1890 | if (bs == NULL) | |
1891 | return bs; | |
1892 | ||
1893 | for (; bs != NULL; bs = bs->next) | |
1894 | { | |
1895 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1896 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1897 | if (bs->commands != NULL) |
1898 | tmp->commands = copy_command_lines (bs->commands); | |
1899 | if (bs->old_val != NULL) | |
1900 | tmp->old_val = value_copy (bs->old_val); | |
1901 | ||
c906108c SS |
1902 | if (p == NULL) |
1903 | /* This is the first thing in the chain. */ | |
1904 | retval = tmp; | |
1905 | else | |
1906 | p->next = tmp; | |
1907 | p = tmp; | |
1908 | } | |
1909 | p->next = NULL; | |
1910 | return retval; | |
1911 | } | |
1912 | ||
1913 | /* Find the bpstat associated with this breakpoint */ | |
1914 | ||
1915 | bpstat | |
fba45db2 | 1916 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1917 | { |
c5aa993b JM |
1918 | if (bsp == NULL) |
1919 | return NULL; | |
c906108c | 1920 | |
c5aa993b JM |
1921 | for (; bsp != NULL; bsp = bsp->next) |
1922 | { | |
1923 | if (bsp->breakpoint_at == breakpoint) | |
1924 | return bsp; | |
1925 | } | |
c906108c SS |
1926 | return NULL; |
1927 | } | |
1928 | ||
1929 | /* Find a step_resume breakpoint associated with this bpstat. | |
1930 | (If there are multiple step_resume bp's on the list, this function | |
1931 | will arbitrarily pick one.) | |
1932 | ||
1933 | It is an error to use this function if BPSTAT doesn't contain a | |
1934 | step_resume breakpoint. | |
1935 | ||
1936 | See wait_for_inferior's use of this function. */ | |
1937 | struct breakpoint * | |
fba45db2 | 1938 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1939 | { |
8601f500 MS |
1940 | int current_thread; |
1941 | ||
c906108c SS |
1942 | if (bsp == NULL) |
1943 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1944 | ||
8601f500 MS |
1945 | current_thread = pid_to_thread_id (inferior_ptid); |
1946 | ||
c906108c SS |
1947 | for (; bsp != NULL; bsp = bsp->next) |
1948 | { | |
1949 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1950 | (bsp->breakpoint_at->type == bp_step_resume) && |
1951 | (bsp->breakpoint_at->thread == current_thread || | |
1952 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1953 | return bsp->breakpoint_at; |
c906108c SS |
1954 | } |
1955 | ||
1956 | error ("Internal error (no step_resume breakpoint found)"); | |
1957 | } | |
1958 | ||
1959 | ||
1960 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1961 | at. *BSP upon return is a bpstat which points to the remaining | |
1962 | breakpoints stopped at (but which is not guaranteed to be good for | |
1963 | anything but further calls to bpstat_num). | |
1964 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1965 | ||
1966 | int | |
fba45db2 | 1967 | bpstat_num (bpstat *bsp) |
c906108c SS |
1968 | { |
1969 | struct breakpoint *b; | |
1970 | ||
1971 | if ((*bsp) == NULL) | |
1972 | return 0; /* No more breakpoint values */ | |
1973 | else | |
1974 | { | |
1975 | b = (*bsp)->breakpoint_at; | |
1976 | *bsp = (*bsp)->next; | |
1977 | if (b == NULL) | |
1978 | return -1; /* breakpoint that's been deleted since */ | |
1979 | else | |
c5aa993b | 1980 | return b->number; /* We have its number */ |
c906108c SS |
1981 | } |
1982 | } | |
1983 | ||
1984 | /* Modify BS so that the actions will not be performed. */ | |
1985 | ||
1986 | void | |
fba45db2 | 1987 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1988 | { |
1989 | for (; bs != NULL; bs = bs->next) | |
1990 | { | |
c2b8ed2c | 1991 | free_command_lines (&bs->commands); |
c906108c SS |
1992 | if (bs->old_val != NULL) |
1993 | { | |
1994 | value_free (bs->old_val); | |
1995 | bs->old_val = NULL; | |
1996 | } | |
1997 | } | |
1998 | } | |
1999 | ||
2000 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2001 | static void |
4efb68b1 | 2002 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2003 | { |
2004 | executing_breakpoint_commands = 0; | |
2005 | } | |
2006 | ||
2007 | /* Execute all the commands associated with all the breakpoints at this | |
2008 | location. Any of these commands could cause the process to proceed | |
2009 | beyond this point, etc. We look out for such changes by checking | |
2010 | the global "breakpoint_proceeded" after each command. */ | |
2011 | ||
2012 | void | |
fba45db2 | 2013 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2014 | { |
2015 | bpstat bs; | |
2016 | struct cleanup *old_chain; | |
c906108c SS |
2017 | |
2018 | /* Avoid endless recursion if a `source' command is contained | |
2019 | in bs->commands. */ | |
2020 | if (executing_breakpoint_commands) | |
2021 | return; | |
2022 | ||
2023 | executing_breakpoint_commands = 1; | |
2024 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2025 | ||
2026 | top: | |
2027 | /* Note that (as of this writing), our callers all appear to | |
2028 | be passing us the address of global stop_bpstat. And, if | |
2029 | our calls to execute_control_command cause the inferior to | |
2030 | proceed, that global (and hence, *bsp) will change. | |
2031 | ||
2032 | We must be careful to not touch *bsp unless the inferior | |
2033 | has not proceeded. */ | |
2034 | ||
2035 | /* This pointer will iterate over the list of bpstat's. */ | |
2036 | bs = *bsp; | |
2037 | ||
2038 | breakpoint_proceeded = 0; | |
2039 | for (; bs != NULL; bs = bs->next) | |
2040 | { | |
6c50ab1c JB |
2041 | struct command_line *cmd; |
2042 | struct cleanup *this_cmd_tree_chain; | |
2043 | ||
2044 | /* Take ownership of the BSP's command tree, if it has one. | |
2045 | ||
2046 | The command tree could legitimately contain commands like | |
2047 | 'step' and 'next', which call clear_proceed_status, which | |
2048 | frees stop_bpstat's command tree. To make sure this doesn't | |
2049 | free the tree we're executing out from under us, we need to | |
2050 | take ownership of the tree ourselves. Since a given bpstat's | |
2051 | commands are only executed once, we don't need to copy it; we | |
2052 | can clear the pointer in the bpstat, and make sure we free | |
2053 | the tree when we're done. */ | |
c906108c | 2054 | cmd = bs->commands; |
6c50ab1c JB |
2055 | bs->commands = 0; |
2056 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2057 | ||
c906108c SS |
2058 | while (cmd != NULL) |
2059 | { | |
2060 | execute_control_command (cmd); | |
2061 | ||
2062 | if (breakpoint_proceeded) | |
2063 | break; | |
2064 | else | |
2065 | cmd = cmd->next; | |
2066 | } | |
6c50ab1c JB |
2067 | |
2068 | /* We can free this command tree now. */ | |
2069 | do_cleanups (this_cmd_tree_chain); | |
2070 | ||
c906108c SS |
2071 | if (breakpoint_proceeded) |
2072 | /* The inferior is proceeded by the command; bomb out now. | |
2073 | The bpstat chain has been blown away by wait_for_inferior. | |
2074 | But since execution has stopped again, there is a new bpstat | |
2075 | to look at, so start over. */ | |
2076 | goto top; | |
c906108c | 2077 | } |
c2b8ed2c | 2078 | do_cleanups (old_chain); |
c906108c SS |
2079 | } |
2080 | ||
e514a9d6 | 2081 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2082 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2083 | by having it set different print_it values. |
2084 | ||
2085 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2086 | through the bpstat list of things causing this stop, calling the | |
2087 | print_bp_stop_message function on each one. The behavior of the | |
2088 | print_bp_stop_message function depends on the print_it field of | |
2089 | bpstat. If such field so indicates, call this function here. | |
2090 | ||
2091 | Return values from this routine (ultimately used by bpstat_print() | |
2092 | and normal_stop() to decide what to do): | |
2093 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2094 | don't print anything else. | |
2095 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2096 | that something to be followed by a location. | |
2097 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2098 | that something to be followed by a location. | |
2099 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2100 | analysis. */ | |
c906108c | 2101 | |
917317f4 | 2102 | static enum print_stop_action |
fba45db2 | 2103 | print_it_typical (bpstat bs) |
c906108c | 2104 | { |
3b31d625 | 2105 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2106 | struct ui_stream *stb; |
2107 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2108 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2109 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2110 | which has since been deleted. */ | |
e514a9d6 | 2111 | if (bs->breakpoint_at == NULL) |
917317f4 | 2112 | return PRINT_UNKNOWN; |
c906108c | 2113 | |
e514a9d6 | 2114 | switch (bs->breakpoint_at->type) |
c906108c | 2115 | { |
e514a9d6 JM |
2116 | case bp_breakpoint: |
2117 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2118 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2119 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2120 | bs->breakpoint_at->loc->address, | |
76897487 | 2121 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2122 | annotate_breakpoint (bs->breakpoint_at->number); |
2123 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2124 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2125 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2126 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2127 | ui_out_text (uiout, ", "); | |
2128 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2129 | break; |
2130 | ||
2131 | case bp_shlib_event: | |
917317f4 JM |
2132 | /* Did we stop because the user set the stop_on_solib_events |
2133 | variable? (If so, we report this as a generic, "Stopped due | |
2134 | to shlib event" message.) */ | |
e514a9d6 JM |
2135 | printf_filtered ("Stopped due to shared library event\n"); |
2136 | return PRINT_NOTHING; | |
2137 | break; | |
2138 | ||
c4093a6a JM |
2139 | case bp_thread_event: |
2140 | /* Not sure how we will get here. | |
2141 | GDB should not stop for these breakpoints. */ | |
2142 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2143 | return PRINT_NOTHING; | |
2144 | break; | |
2145 | ||
1900040c MS |
2146 | case bp_overlay_event: |
2147 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2148 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2149 | return PRINT_NOTHING; | |
2150 | break; | |
2151 | ||
e514a9d6 | 2152 | case bp_catch_load: |
c906108c SS |
2153 | annotate_catchpoint (bs->breakpoint_at->number); |
2154 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2155 | printf_filtered ("loaded"); |
2156 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2157 | return PRINT_SRC_AND_LOC; | |
2158 | break; | |
2159 | ||
2160 | case bp_catch_unload: | |
2161 | annotate_catchpoint (bs->breakpoint_at->number); | |
2162 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2163 | printf_filtered ("unloaded"); | |
2164 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2165 | return PRINT_SRC_AND_LOC; | |
2166 | break; | |
2167 | ||
2168 | case bp_catch_fork: | |
2169 | annotate_catchpoint (bs->breakpoint_at->number); | |
2170 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2171 | printf_filtered ("forked"); | |
53a5351d JM |
2172 | printf_filtered (" process %d), ", |
2173 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2174 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2175 | break; |
2176 | ||
2177 | case bp_catch_vfork: | |
2178 | annotate_catchpoint (bs->breakpoint_at->number); | |
2179 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2180 | printf_filtered ("vforked"); | |
2181 | printf_filtered (" process %d), ", | |
2182 | bs->breakpoint_at->forked_inferior_pid); | |
2183 | return PRINT_SRC_AND_LOC; | |
2184 | break; | |
2185 | ||
2186 | case bp_catch_exec: | |
c906108c SS |
2187 | annotate_catchpoint (bs->breakpoint_at->number); |
2188 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2189 | bs->breakpoint_at->number, |
2190 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2191 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2192 | break; |
2193 | ||
2194 | case bp_catch_catch: | |
53a5351d JM |
2195 | if (current_exception_event && |
2196 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2197 | { |
2198 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2199 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2200 | bs->breakpoint_at->number); | |
c5aa993b JM |
2201 | printf_filtered ("throw location "); |
2202 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2203 | printf_filtered ("%s:%d", | |
2204 | CURRENT_EXCEPTION_THROW_FILE, | |
2205 | CURRENT_EXCEPTION_THROW_LINE); | |
2206 | else | |
2207 | printf_filtered ("unknown"); | |
2208 | ||
2209 | printf_filtered (", catch location "); | |
2210 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2211 | printf_filtered ("%s:%d", | |
2212 | CURRENT_EXCEPTION_CATCH_FILE, | |
2213 | CURRENT_EXCEPTION_CATCH_LINE); | |
2214 | else | |
2215 | printf_filtered ("unknown"); | |
2216 | ||
2217 | printf_filtered ("\n"); | |
e514a9d6 JM |
2218 | /* don't bother to print location frame info */ |
2219 | return PRINT_SRC_ONLY; | |
c5aa993b | 2220 | } |
c906108c | 2221 | else |
c5aa993b | 2222 | { |
e514a9d6 JM |
2223 | /* really throw, some other bpstat will handle it */ |
2224 | return PRINT_UNKNOWN; | |
c5aa993b | 2225 | } |
e514a9d6 JM |
2226 | break; |
2227 | ||
2228 | case bp_catch_throw: | |
53a5351d JM |
2229 | if (current_exception_event && |
2230 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2231 | { |
2232 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2233 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2234 | bs->breakpoint_at->number); | |
c5aa993b JM |
2235 | printf_filtered ("throw location "); |
2236 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2237 | printf_filtered ("%s:%d", | |
2238 | CURRENT_EXCEPTION_THROW_FILE, | |
2239 | CURRENT_EXCEPTION_THROW_LINE); | |
2240 | else | |
2241 | printf_filtered ("unknown"); | |
2242 | ||
2243 | printf_filtered (", catch location "); | |
2244 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2245 | printf_filtered ("%s:%d", | |
2246 | CURRENT_EXCEPTION_CATCH_FILE, | |
2247 | CURRENT_EXCEPTION_CATCH_LINE); | |
2248 | else | |
2249 | printf_filtered ("unknown"); | |
2250 | ||
2251 | printf_filtered ("\n"); | |
e514a9d6 JM |
2252 | /* don't bother to print location frame info */ |
2253 | return PRINT_SRC_ONLY; | |
c5aa993b | 2254 | } |
c906108c | 2255 | else |
c5aa993b | 2256 | { |
e514a9d6 JM |
2257 | /* really catch, some other bpstat will handle it */ |
2258 | return PRINT_UNKNOWN; | |
c5aa993b | 2259 | } |
e514a9d6 | 2260 | break; |
c906108c | 2261 | |
e514a9d6 JM |
2262 | case bp_watchpoint: |
2263 | case bp_hardware_watchpoint: | |
2264 | if (bs->old_val != NULL) | |
2265 | { | |
2266 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2267 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2268 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2269 | mention (bs->breakpoint_at); |
3b31d625 | 2270 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2271 | ui_out_text (uiout, "\nOld value = "); |
2272 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2273 | ui_out_field_stream (uiout, "old", stb); | |
2274 | ui_out_text (uiout, "\nNew value = "); | |
2275 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2276 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2277 | do_cleanups (ui_out_chain); |
8b93c638 | 2278 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2279 | value_free (bs->old_val); |
2280 | bs->old_val = NULL; | |
2281 | } | |
2282 | /* More than one watchpoint may have been triggered. */ | |
2283 | return PRINT_UNKNOWN; | |
2284 | break; | |
2285 | ||
2286 | case bp_read_watchpoint: | |
9dc5e2a9 | 2287 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2288 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); |
8b93c638 | 2289 | mention (bs->breakpoint_at); |
3b31d625 | 2290 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2291 | ui_out_text (uiout, "\nValue = "); |
2292 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2293 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2294 | do_cleanups (ui_out_chain); |
8b93c638 | 2295 | ui_out_text (uiout, "\n"); |
917317f4 | 2296 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2297 | break; |
2298 | ||
2299 | case bp_access_watchpoint: | |
8b93c638 JM |
2300 | if (bs->old_val != NULL) |
2301 | { | |
2302 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2303 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2304 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2305 | mention (bs->breakpoint_at); |
3b31d625 | 2306 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2307 | ui_out_text (uiout, "\nOld value = "); |
2308 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2309 | ui_out_field_stream (uiout, "old", stb); | |
2310 | value_free (bs->old_val); | |
2311 | bs->old_val = NULL; | |
2312 | ui_out_text (uiout, "\nNew value = "); | |
2313 | } | |
2314 | else | |
2315 | { | |
2316 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2317 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2318 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
3b31d625 | 2319 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2320 | ui_out_text (uiout, "\nValue = "); |
2321 | } | |
2322 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2323 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2324 | do_cleanups (ui_out_chain); |
8b93c638 | 2325 | ui_out_text (uiout, "\n"); |
917317f4 | 2326 | return PRINT_UNKNOWN; |
e514a9d6 | 2327 | break; |
4ce44c66 | 2328 | |
e514a9d6 JM |
2329 | /* Fall through, we don't deal with these types of breakpoints |
2330 | here. */ | |
2331 | ||
11cf8741 | 2332 | case bp_finish: |
9dc5e2a9 | 2333 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2334 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2335 | return PRINT_UNKNOWN; |
2336 | break; | |
2337 | ||
e514a9d6 | 2338 | case bp_until: |
9dc5e2a9 | 2339 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2340 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2341 | return PRINT_UNKNOWN; |
2342 | break; | |
2343 | ||
c2d11a7d | 2344 | case bp_none: |
e514a9d6 JM |
2345 | case bp_longjmp: |
2346 | case bp_longjmp_resume: | |
2347 | case bp_step_resume: | |
2348 | case bp_through_sigtramp: | |
2349 | case bp_watchpoint_scope: | |
2350 | case bp_call_dummy: | |
2351 | default: | |
2352 | return PRINT_UNKNOWN; | |
2353 | } | |
2354 | } | |
2355 | ||
2356 | /* Generic routine for printing messages indicating why we | |
2357 | stopped. The behavior of this function depends on the value | |
2358 | 'print_it' in the bpstat structure. Under some circumstances we | |
2359 | may decide not to print anything here and delegate the task to | |
2360 | normal_stop(). */ | |
2361 | ||
2362 | static enum print_stop_action | |
2363 | print_bp_stop_message (bpstat bs) | |
2364 | { | |
2365 | switch (bs->print_it) | |
2366 | { | |
2367 | case print_it_noop: | |
2368 | /* Nothing should be printed for this bpstat entry. */ | |
2369 | return PRINT_UNKNOWN; | |
2370 | break; | |
2371 | ||
2372 | case print_it_done: | |
2373 | /* We still want to print the frame, but we already printed the | |
2374 | relevant messages. */ | |
2375 | return PRINT_SRC_AND_LOC; | |
2376 | break; | |
2377 | ||
2378 | case print_it_normal: | |
3086aeae DJ |
2379 | /* Normal case. Call the breakpoint's print_it method, or |
2380 | print_it_typical. */ | |
2381 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2382 | && bs->breakpoint_at->ops->print_it != NULL) | |
2383 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2384 | else | |
2385 | return print_it_typical (bs); | |
e514a9d6 | 2386 | break; |
3086aeae | 2387 | |
e514a9d6 | 2388 | default: |
8e65ff28 AC |
2389 | internal_error (__FILE__, __LINE__, |
2390 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2391 | break; |
c906108c | 2392 | } |
c906108c SS |
2393 | } |
2394 | ||
e514a9d6 JM |
2395 | /* Print a message indicating what happened. This is called from |
2396 | normal_stop(). The input to this routine is the head of the bpstat | |
2397 | list - a list of the eventpoints that caused this stop. This | |
2398 | routine calls the generic print routine for printing a message | |
2399 | about reasons for stopping. This will print (for example) the | |
2400 | "Breakpoint n," part of the output. The return value of this | |
2401 | routine is one of: | |
c906108c | 2402 | |
917317f4 JM |
2403 | PRINT_UNKNOWN: Means we printed nothing |
2404 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2405 | code to print the location. An example is |
2406 | "Breakpoint 1, " which should be followed by | |
2407 | the location. | |
917317f4 | 2408 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2409 | to also print the location part of the message. |
2410 | An example is the catch/throw messages, which | |
917317f4 JM |
2411 | don't require a location appended to the end. |
2412 | PRINT_NOTHING: We have done some printing and we don't need any | |
2413 | further info to be printed.*/ | |
c906108c | 2414 | |
917317f4 | 2415 | enum print_stop_action |
fba45db2 | 2416 | bpstat_print (bpstat bs) |
c906108c SS |
2417 | { |
2418 | int val; | |
c5aa993b | 2419 | |
c906108c | 2420 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2421 | (Currently all watchpoints go on the bpstat whether hit or not. |
2422 | That probably could (should) be changed, provided care is taken | |
c906108c | 2423 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2424 | for (; bs; bs = bs->next) |
2425 | { | |
2426 | val = print_bp_stop_message (bs); | |
2427 | if (val == PRINT_SRC_ONLY | |
2428 | || val == PRINT_SRC_AND_LOC | |
2429 | || val == PRINT_NOTHING) | |
2430 | return val; | |
2431 | } | |
c906108c | 2432 | |
e514a9d6 JM |
2433 | /* We reached the end of the chain, or we got a null BS to start |
2434 | with and nothing was printed. */ | |
917317f4 | 2435 | return PRINT_UNKNOWN; |
c906108c SS |
2436 | } |
2437 | ||
2438 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2439 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2440 | The argument is a "struct expression *" that has been cast to char * to | |
2441 | make it pass through catch_errors. */ | |
2442 | ||
2443 | static int | |
4efb68b1 | 2444 | breakpoint_cond_eval (void *exp) |
c906108c | 2445 | { |
278cd55f | 2446 | struct value *mark = value_mark (); |
c5aa993b | 2447 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2448 | value_free_to_mark (mark); |
2449 | return i; | |
2450 | } | |
2451 | ||
2452 | /* Allocate a new bpstat and chain it to the current one. */ | |
2453 | ||
2454 | static bpstat | |
831662b3 | 2455 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2456 | { |
2457 | bpstat bs; | |
2458 | ||
2459 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2460 | cbs->next = bs; | |
2461 | bs->breakpoint_at = b; | |
2462 | /* If the condition is false, etc., don't do the commands. */ | |
2463 | bs->commands = NULL; | |
2464 | bs->old_val = NULL; | |
2465 | bs->print_it = print_it_normal; | |
2466 | return bs; | |
2467 | } | |
2468 | \f | |
2469 | /* Possible return values for watchpoint_check (this can't be an enum | |
2470 | because of check_errors). */ | |
2471 | /* The watchpoint has been deleted. */ | |
2472 | #define WP_DELETED 1 | |
2473 | /* The value has changed. */ | |
2474 | #define WP_VALUE_CHANGED 2 | |
2475 | /* The value has not changed. */ | |
2476 | #define WP_VALUE_NOT_CHANGED 3 | |
2477 | ||
2478 | #define BP_TEMPFLAG 1 | |
2479 | #define BP_HARDWAREFLAG 2 | |
2480 | ||
2481 | /* Check watchpoint condition. */ | |
2482 | ||
2483 | static int | |
4efb68b1 | 2484 | watchpoint_check (void *p) |
c906108c SS |
2485 | { |
2486 | bpstat bs = (bpstat) p; | |
2487 | struct breakpoint *b; | |
2488 | struct frame_info *fr; | |
2489 | int within_current_scope; | |
2490 | ||
2491 | b = bs->breakpoint_at; | |
2492 | ||
2493 | if (b->exp_valid_block == NULL) | |
2494 | within_current_scope = 1; | |
2495 | else | |
2496 | { | |
2497 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2498 | any chance of handling watchpoints on local variables, we'll need |
2499 | the frame chain (so we can determine if we're in scope). */ | |
2500 | reinit_frame_cache (); | |
101dcfbe | 2501 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2502 | within_current_scope = (fr != NULL); |
c12260ac CV |
2503 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2504 | in the function but the stack frame has already been invalidated. | |
2505 | Since we can't rely on the values of local variables after the | |
2506 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2507 | state as `not changed' without further checking. |
2508 | ||
2509 | vinschen/2003-09-04: The former implementation left out the case | |
2510 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2511 | because the current PC is currently in an epilogue. Calling | |
2512 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2513 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2514 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2515 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2516 | if (fr && within_current_scope) |
c906108c SS |
2517 | /* If we end up stopping, the current frame will get selected |
2518 | in normal_stop. So this call to select_frame won't affect | |
2519 | the user. */ | |
0f7d239c | 2520 | select_frame (fr); |
c906108c | 2521 | } |
c5aa993b | 2522 | |
c906108c SS |
2523 | if (within_current_scope) |
2524 | { | |
2525 | /* We use value_{,free_to_}mark because it could be a | |
2526 | *long* time before we return to the command level and | |
c5aa993b JM |
2527 | call free_all_values. We can't call free_all_values because |
2528 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2529 | |
278cd55f AC |
2530 | struct value *mark = value_mark (); |
2531 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2532 | if (!value_equal (b->val, new_val)) |
2533 | { | |
2534 | release_value (new_val); | |
2535 | value_free_to_mark (mark); | |
2536 | bs->old_val = b->val; | |
2537 | b->val = new_val; | |
2538 | /* We will stop here */ | |
2539 | return WP_VALUE_CHANGED; | |
2540 | } | |
2541 | else | |
2542 | { | |
2543 | /* Nothing changed, don't do anything. */ | |
2544 | value_free_to_mark (mark); | |
2545 | /* We won't stop here */ | |
2546 | return WP_VALUE_NOT_CHANGED; | |
2547 | } | |
2548 | } | |
2549 | else | |
2550 | { | |
2551 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2552 | if we temporarily ignored the watchpoint, then when |
2553 | we reenter the block in which it is valid it contains | |
2554 | garbage (in the case of a function, it may have two | |
2555 | garbage values, one before and one after the prologue). | |
2556 | So we can't even detect the first assignment to it and | |
2557 | watch after that (since the garbage may or may not equal | |
2558 | the first value assigned). */ | |
4ce44c66 JM |
2559 | /* We print all the stop information in print_it_typical(), but |
2560 | in this case, by the time we call print_it_typical() this bp | |
2561 | will be deleted already. So we have no choice but print the | |
2562 | information here. */ | |
9dc5e2a9 | 2563 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2564 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2565 | ui_out_text (uiout, "\nWatchpoint "); |
2566 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2567 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2568 | which its expression is valid.\n"); | |
4ce44c66 | 2569 | |
c906108c | 2570 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2571 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2572 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2573 | |
2574 | return WP_DELETED; | |
2575 | } | |
2576 | } | |
2577 | ||
9709f61c DJ |
2578 | /* Get a bpstat associated with having just stopped at address |
2579 | BP_ADDR. */ | |
c906108c SS |
2580 | |
2581 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2582 | don't understand this stop. Result is a chain of bpstat's such that: | |
2583 | ||
c5aa993b | 2584 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2585 | |
c5aa993b | 2586 | if we understand why we stopped, the result is not null. |
c906108c | 2587 | |
c5aa993b JM |
2588 | Each element of the chain refers to a particular breakpoint or |
2589 | watchpoint at which we have stopped. (We may have stopped for | |
2590 | several reasons concurrently.) | |
c906108c | 2591 | |
c5aa993b JM |
2592 | Each element of the chain has valid next, breakpoint_at, |
2593 | commands, FIXME??? fields. */ | |
c906108c SS |
2594 | |
2595 | bpstat | |
fa5281d0 | 2596 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 2597 | { |
52f0bd74 | 2598 | struct breakpoint *b, *temp; |
c906108c SS |
2599 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
2600 | int real_breakpoint = 0; | |
2601 | /* Root of the chain of bpstat's */ | |
2602 | struct bpstats root_bs[1]; | |
2603 | /* Pointer to the last thing in the chain currently. */ | |
2604 | bpstat bs = root_bs; | |
fa5281d0 | 2605 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2606 | |
c906108c | 2607 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2608 | { |
468d015d | 2609 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2610 | continue; |
2611 | ||
2612 | if (b->type != bp_watchpoint | |
2613 | && b->type != bp_hardware_watchpoint | |
2614 | && b->type != bp_read_watchpoint | |
2615 | && b->type != bp_access_watchpoint | |
2616 | && b->type != bp_hardware_breakpoint | |
2617 | && b->type != bp_catch_fork | |
2618 | && b->type != bp_catch_vfork | |
2619 | && b->type != bp_catch_exec | |
2620 | && b->type != bp_catch_catch | |
2621 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2622 | { |
5cab636d | 2623 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2624 | continue; |
2625 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2626 | && section_is_overlay (b->loc->section) |
2627 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2628 | continue; |
2629 | } | |
c906108c | 2630 | |
c02f5703 MS |
2631 | if (b->type == bp_hardware_breakpoint) |
2632 | { | |
9709f61c | 2633 | if (b->loc->address != bp_addr) |
c02f5703 MS |
2634 | continue; |
2635 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2636 | && section_is_overlay (b->loc->section) |
2637 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2638 | continue; |
2639 | } | |
c5aa993b | 2640 | |
c5aa993b JM |
2641 | /* Is this a catchpoint of a load or unload? If so, did we |
2642 | get a load or unload of the specified library? If not, | |
2643 | ignore it. */ | |
2644 | if ((b->type == bp_catch_load) | |
c906108c | 2645 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2646 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2647 | || ((b->dll_pathname != NULL) |
53a5351d | 2648 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2649 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2650 | PIDGET (inferior_ptid))) | |
53a5351d | 2651 | != 0))) |
c906108c | 2652 | #endif |
c5aa993b JM |
2653 | ) |
2654 | continue; | |
2655 | ||
2656 | if ((b->type == bp_catch_unload) | |
c906108c | 2657 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2658 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2659 | || ((b->dll_pathname != NULL) |
53a5351d | 2660 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2661 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2662 | PIDGET (inferior_ptid))) | |
53a5351d | 2663 | != 0))) |
c906108c | 2664 | #endif |
c5aa993b JM |
2665 | ) |
2666 | continue; | |
c906108c | 2667 | |
c5aa993b | 2668 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2669 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2670 | &b->forked_inferior_pid)) | |
c5aa993b | 2671 | continue; |
c906108c | 2672 | |
c5aa993b | 2673 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2674 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2675 | &b->forked_inferior_pid)) | |
c5aa993b | 2676 | continue; |
c906108c | 2677 | |
c5aa993b | 2678 | if ((b->type == bp_catch_exec) |
47932f85 | 2679 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2680 | continue; |
c906108c | 2681 | |
c5aa993b JM |
2682 | if (ep_is_exception_catchpoint (b) && |
2683 | !(current_exception_event = target_get_current_exception_event ())) | |
2684 | continue; | |
c906108c | 2685 | |
c5aa993b JM |
2686 | /* Come here if it's a watchpoint, or if the break address matches */ |
2687 | ||
2688 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2689 | ||
2690 | /* Watchpoints may change this, if not found to have triggered. */ | |
2691 | bs->stop = 1; | |
2692 | bs->print = 1; | |
2693 | ||
53a5351d JM |
2694 | if (b->type == bp_watchpoint || |
2695 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2696 | { |
9ebf4acf AC |
2697 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2698 | b->number); | |
2699 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2700 | int e = catch_errors (watchpoint_check, bs, message, | |
2701 | RETURN_MASK_ALL); | |
2702 | do_cleanups (cleanups); | |
2703 | switch (e) | |
c5aa993b JM |
2704 | { |
2705 | case WP_DELETED: | |
2706 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2707 | /* Actually this is superfluous, because by the time we |
2708 | call print_it_typical() the wp will be already deleted, | |
2709 | and the function will return immediately. */ | |
c5aa993b JM |
2710 | bs->print_it = print_it_done; |
2711 | /* Stop. */ | |
2712 | break; | |
2713 | case WP_VALUE_CHANGED: | |
2714 | /* Stop. */ | |
2715 | ++(b->hit_count); | |
2716 | break; | |
2717 | case WP_VALUE_NOT_CHANGED: | |
2718 | /* Don't stop. */ | |
2719 | bs->print_it = print_it_noop; | |
2720 | bs->stop = 0; | |
c5aa993b JM |
2721 | continue; |
2722 | default: | |
2723 | /* Can't happen. */ | |
2724 | /* FALLTHROUGH */ | |
2725 | case 0: | |
2726 | /* Error from catch_errors. */ | |
2727 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2728 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2729 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2730 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2731 | /* We've already printed what needs to be printed. */ |
2732 | bs->print_it = print_it_done; | |
2733 | ||
2734 | /* Stop. */ | |
2735 | break; | |
2736 | } | |
2737 | } | |
53a5351d JM |
2738 | else if (b->type == bp_read_watchpoint || |
2739 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2740 | { |
2741 | CORE_ADDR addr; | |
278cd55f | 2742 | struct value *v; |
c5aa993b JM |
2743 | int found = 0; |
2744 | ||
2745 | addr = target_stopped_data_address (); | |
2746 | if (addr == 0) | |
2747 | continue; | |
2748 | for (v = b->val_chain; v; v = v->next) | |
2749 | { | |
5c44784c JM |
2750 | if (VALUE_LVAL (v) == lval_memory |
2751 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2752 | { |
2e70b7b9 MS |
2753 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2754 | ||
2755 | if (v == b->val_chain | |
2756 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2757 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2758 | { | |
2759 | CORE_ADDR vaddr; | |
2760 | ||
2761 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2762 | /* Exact match not required. Within range is | |
2763 | sufficient. */ | |
2764 | if (addr >= vaddr && | |
2765 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2766 | found = 1; | |
2767 | } | |
c5aa993b JM |
2768 | } |
2769 | } | |
2770 | if (found) | |
9ebf4acf AC |
2771 | { |
2772 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2773 | b->number); | |
2774 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2775 | int e = catch_errors (watchpoint_check, bs, message, | |
2776 | RETURN_MASK_ALL); | |
2777 | do_cleanups (cleanups); | |
2778 | switch (e) | |
2779 | { | |
2780 | case WP_DELETED: | |
2781 | /* We've already printed what needs to be printed. */ | |
2782 | bs->print_it = print_it_done; | |
2783 | /* Stop. */ | |
2784 | break; | |
2785 | case WP_VALUE_CHANGED: | |
2786 | if (b->type == bp_read_watchpoint) | |
2787 | { | |
2788 | /* Don't stop: read watchpoints shouldn't fire if | |
2789 | the value has changed. This is for targets | |
2790 | which cannot set read-only watchpoints. */ | |
2791 | bs->print_it = print_it_noop; | |
2792 | bs->stop = 0; | |
2793 | continue; | |
2794 | } | |
2795 | ++(b->hit_count); | |
2796 | break; | |
2797 | case WP_VALUE_NOT_CHANGED: | |
2798 | /* Stop. */ | |
2799 | ++(b->hit_count); | |
2800 | break; | |
2801 | default: | |
2802 | /* Can't happen. */ | |
2803 | case 0: | |
2804 | /* Error from catch_errors. */ | |
2805 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2806 | if (b->related_breakpoint) | |
2807 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2808 | b->disposition = disp_del_at_next_stop; | |
2809 | /* We've already printed what needs to be printed. */ | |
2810 | bs->print_it = print_it_done; | |
2811 | break; | |
2812 | } | |
2813 | } | |
53a5351d JM |
2814 | else /* found == 0 */ |
2815 | { | |
2816 | /* This is a case where some watchpoint(s) triggered, | |
2817 | but not at the address of this watchpoint (FOUND | |
2818 | was left zero). So don't print anything for this | |
2819 | watchpoint. */ | |
2820 | bs->print_it = print_it_noop; | |
2821 | bs->stop = 0; | |
2822 | continue; | |
2823 | } | |
c5aa993b JM |
2824 | } |
2825 | else | |
2826 | { | |
2827 | /* By definition, an encountered breakpoint is a triggered | |
2828 | breakpoint. */ | |
2829 | ++(b->hit_count); | |
c906108c | 2830 | |
c5aa993b JM |
2831 | real_breakpoint = 1; |
2832 | } | |
2833 | ||
818dd999 AC |
2834 | if (frame_id_p (b->frame_id) |
2835 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2836 | bs->stop = 0; |
2837 | else | |
2838 | { | |
2839 | int value_is_zero = 0; | |
2840 | ||
2841 | if (b->cond) | |
2842 | { | |
2843 | /* Need to select the frame, with all that implies | |
2844 | so that the conditions will have the right context. */ | |
0f7d239c | 2845 | select_frame (get_current_frame ()); |
c5aa993b JM |
2846 | value_is_zero |
2847 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2848 | "Error in testing breakpoint condition:\n", | |
2849 | RETURN_MASK_ALL); | |
2850 | /* FIXME-someday, should give breakpoint # */ | |
2851 | free_all_values (); | |
2852 | } | |
2853 | if (b->cond && value_is_zero) | |
2854 | { | |
2855 | bs->stop = 0; | |
2856 | /* Don't consider this a hit. */ | |
2857 | --(b->hit_count); | |
2858 | } | |
fa5281d0 DJ |
2859 | else if (b->thread != -1 && b->thread != thread_id) |
2860 | { | |
2861 | bs->stop = 0; | |
2862 | /* Don't consider this a hit. */ | |
2863 | --(b->hit_count); | |
2864 | } | |
c5aa993b JM |
2865 | else if (b->ignore_count > 0) |
2866 | { | |
2867 | b->ignore_count--; | |
5c44784c | 2868 | annotate_ignore_count_change (); |
c5aa993b JM |
2869 | bs->stop = 0; |
2870 | } | |
2871 | else | |
2872 | { | |
2873 | /* We will stop here */ | |
b5de0fa7 EZ |
2874 | if (b->disposition == disp_disable) |
2875 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2876 | if (b->silent) |
2877 | bs->print = 0; | |
552f4abf | 2878 | bs->commands = b->commands; |
c5aa993b | 2879 | if (bs->commands && |
6314a349 AC |
2880 | (strcmp ("silent", bs->commands->line) == 0 |
2881 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
2882 | { |
2883 | bs->commands = bs->commands->next; | |
c906108c | 2884 | bs->print = 0; |
c5aa993b | 2885 | } |
552f4abf | 2886 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2887 | } |
2888 | } | |
2889 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2890 | if (bs->stop == 0 || bs->print == 0) | |
2891 | bs->print_it = print_it_noop; | |
2892 | } | |
c906108c SS |
2893 | |
2894 | bs->next = NULL; /* Terminate the chain */ | |
2895 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2896 | ||
c906108c SS |
2897 | /* The value of a hardware watchpoint hasn't changed, but the |
2898 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2899 | if (bs && !bs->stop && |
c906108c SS |
2900 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2901 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2902 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2903 | { | |
2904 | remove_breakpoints (); | |
2905 | insert_breakpoints (); | |
2906 | } | |
2907 | return bs; | |
2908 | } | |
2909 | \f | |
2910 | /* Tell what to do about this bpstat. */ | |
2911 | struct bpstat_what | |
fba45db2 | 2912 | bpstat_what (bpstat bs) |
c906108c SS |
2913 | { |
2914 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2915 | enum class |
2916 | { | |
2917 | /* This bpstat element has no effect on the main_action. */ | |
2918 | no_effect = 0, | |
2919 | ||
2920 | /* There was a watchpoint, stop but don't print. */ | |
2921 | wp_silent, | |
c906108c | 2922 | |
c5aa993b JM |
2923 | /* There was a watchpoint, stop and print. */ |
2924 | wp_noisy, | |
c906108c | 2925 | |
c5aa993b JM |
2926 | /* There was a breakpoint but we're not stopping. */ |
2927 | bp_nostop, | |
c906108c | 2928 | |
c5aa993b JM |
2929 | /* There was a breakpoint, stop but don't print. */ |
2930 | bp_silent, | |
c906108c | 2931 | |
c5aa993b JM |
2932 | /* There was a breakpoint, stop and print. */ |
2933 | bp_noisy, | |
c906108c | 2934 | |
c5aa993b JM |
2935 | /* We hit the longjmp breakpoint. */ |
2936 | long_jump, | |
c906108c | 2937 | |
c5aa993b JM |
2938 | /* We hit the longjmp_resume breakpoint. */ |
2939 | long_resume, | |
c906108c | 2940 | |
c5aa993b JM |
2941 | /* We hit the step_resume breakpoint. */ |
2942 | step_resume, | |
c906108c | 2943 | |
c5aa993b JM |
2944 | /* We hit the through_sigtramp breakpoint. */ |
2945 | through_sig, | |
c906108c | 2946 | |
c5aa993b JM |
2947 | /* We hit the shared library event breakpoint. */ |
2948 | shlib_event, | |
c906108c | 2949 | |
c5aa993b JM |
2950 | /* We caught a shared library event. */ |
2951 | catch_shlib_event, | |
c906108c | 2952 | |
c5aa993b JM |
2953 | /* This is just used to count how many enums there are. */ |
2954 | class_last | |
c906108c SS |
2955 | }; |
2956 | ||
2957 | /* Here is the table which drives this routine. So that we can | |
2958 | format it pretty, we define some abbreviations for the | |
2959 | enum bpstat_what codes. */ | |
2960 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2961 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2962 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2963 | #define sgl BPSTAT_WHAT_SINGLE | |
2964 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2965 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2966 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2967 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2968 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2969 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2970 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2971 | ||
2972 | /* "Can't happen." Might want to print an error message. | |
2973 | abort() is not out of the question, but chances are GDB is just | |
2974 | a bit confused, not unusable. */ | |
2975 | #define err BPSTAT_WHAT_STOP_NOISY | |
2976 | ||
2977 | /* Given an old action and a class, come up with a new action. */ | |
2978 | /* One interesting property of this table is that wp_silent is the same | |
2979 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2980 | after stopping, the check for whether to step over a breakpoint | |
2981 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2982 | reference to how we stopped. We retain separate wp_silent and |
2983 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2984 | |
2985 | Another possibly interesting property of this table is that | |
2986 | there's a partial ordering, priority-like, of the actions. Once | |
2987 | you've decided that some action is appropriate, you'll never go | |
2988 | back and decide something of a lower priority is better. The | |
2989 | ordering is: | |
2990 | ||
7e73cedf | 2991 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2992 | sgl < clrs shl shlr slr sn sr ss ts |
2993 | slr < err shl shlr sn sr ss ts | |
2994 | clr < clrs err shl shlr sn sr ss ts | |
2995 | clrs < err shl shlr sn sr ss ts | |
2996 | ss < shl shlr sn sr ts | |
2997 | sn < shl shlr sr ts | |
2998 | sr < shl shlr ts | |
2999 | shl < shlr | |
3000 | ts < | |
3001 | shlr < | |
3002 | ||
43ff13b4 JM |
3003 | What I think this means is that we don't need a damned table |
3004 | here. If you just put the rows and columns in the right order, | |
3005 | it'd look awfully regular. We could simply walk the bpstat list | |
3006 | and choose the highest priority action we find, with a little | |
3007 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
3008 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
3009 | is messy anyway). */ | |
c906108c SS |
3010 | |
3011 | /* step_resume entries: a step resume breakpoint overrides another | |
3012 | breakpoint of signal handling (see comment in wait_for_inferior | |
d7bd68ca | 3013 | at first PC_IN_SIGTRAMP where we set the step_resume breakpoint). */ |
c906108c SS |
3014 | /* We handle the through_sigtramp_breakpoint the same way; having both |
3015 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
3016 | ||
3017 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3018 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3019 | { | |
3020 | /* old action */ | |
3021 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
3022 | */ | |
3023 | /*no_effect */ | |
3024 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
3025 | /*wp_silent */ | |
3026 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3027 | /*wp_noisy */ | |
3028 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3029 | /*bp_nostop */ | |
3030 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
3031 | /*bp_silent */ | |
3032 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3033 | /*bp_noisy */ | |
3034 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3035 | /*long_jump */ | |
a48bb0b3 | 3036 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
3037 | /*long_resume */ |
3038 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
3039 | /*step_resume */ | |
3040 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
3041 | /*through_sig */ | |
3042 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
3043 | /*shlib */ | |
3044 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
3045 | /*catch_shlib */ | |
3046 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
3047 | }; | |
c906108c SS |
3048 | |
3049 | #undef kc | |
3050 | #undef ss | |
3051 | #undef sn | |
3052 | #undef sgl | |
3053 | #undef slr | |
3054 | #undef clr | |
3055 | #undef clrs | |
3056 | #undef err | |
3057 | #undef sr | |
3058 | #undef ts | |
3059 | #undef shl | |
3060 | #undef shlr | |
3061 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3062 | struct bpstat_what retval; | |
3063 | ||
3064 | retval.call_dummy = 0; | |
3065 | for (; bs != NULL; bs = bs->next) | |
3066 | { | |
3067 | enum class bs_class = no_effect; | |
3068 | if (bs->breakpoint_at == NULL) | |
3069 | /* I suspect this can happen if it was a momentary breakpoint | |
3070 | which has since been deleted. */ | |
3071 | continue; | |
3072 | switch (bs->breakpoint_at->type) | |
3073 | { | |
3074 | case bp_none: | |
3075 | continue; | |
3076 | ||
3077 | case bp_breakpoint: | |
3078 | case bp_hardware_breakpoint: | |
3079 | case bp_until: | |
3080 | case bp_finish: | |
3081 | if (bs->stop) | |
3082 | { | |
3083 | if (bs->print) | |
3084 | bs_class = bp_noisy; | |
3085 | else | |
3086 | bs_class = bp_silent; | |
3087 | } | |
3088 | else | |
3089 | bs_class = bp_nostop; | |
3090 | break; | |
3091 | case bp_watchpoint: | |
3092 | case bp_hardware_watchpoint: | |
3093 | case bp_read_watchpoint: | |
3094 | case bp_access_watchpoint: | |
3095 | if (bs->stop) | |
3096 | { | |
3097 | if (bs->print) | |
3098 | bs_class = wp_noisy; | |
3099 | else | |
3100 | bs_class = wp_silent; | |
3101 | } | |
3102 | else | |
53a5351d JM |
3103 | /* There was a watchpoint, but we're not stopping. |
3104 | This requires no further action. */ | |
c906108c SS |
3105 | bs_class = no_effect; |
3106 | break; | |
3107 | case bp_longjmp: | |
3108 | bs_class = long_jump; | |
3109 | break; | |
3110 | case bp_longjmp_resume: | |
3111 | bs_class = long_resume; | |
3112 | break; | |
3113 | case bp_step_resume: | |
3114 | if (bs->stop) | |
3115 | { | |
3116 | bs_class = step_resume; | |
3117 | } | |
3118 | else | |
3119 | /* It is for the wrong frame. */ | |
3120 | bs_class = bp_nostop; | |
3121 | break; | |
3122 | case bp_through_sigtramp: | |
3123 | bs_class = through_sig; | |
3124 | break; | |
3125 | case bp_watchpoint_scope: | |
3126 | bs_class = bp_nostop; | |
3127 | break; | |
c5aa993b JM |
3128 | case bp_shlib_event: |
3129 | bs_class = shlib_event; | |
3130 | break; | |
c4093a6a | 3131 | case bp_thread_event: |
1900040c | 3132 | case bp_overlay_event: |
c4093a6a JM |
3133 | bs_class = bp_nostop; |
3134 | break; | |
c5aa993b JM |
3135 | case bp_catch_load: |
3136 | case bp_catch_unload: | |
3137 | /* Only if this catchpoint triggered should we cause the | |
3138 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3139 | catchpoint. */ | |
3140 | if (bs->stop) | |
3141 | bs_class = catch_shlib_event; | |
3142 | else | |
3143 | bs_class = no_effect; | |
3144 | break; | |
3145 | case bp_catch_fork: | |
3146 | case bp_catch_vfork: | |
3147 | case bp_catch_exec: | |
3148 | if (bs->stop) | |
3149 | { | |
3150 | if (bs->print) | |
3151 | bs_class = bp_noisy; | |
3152 | else | |
3153 | bs_class = bp_silent; | |
3154 | } | |
3155 | else | |
53a5351d JM |
3156 | /* There was a catchpoint, but we're not stopping. |
3157 | This requires no further action. */ | |
c5aa993b JM |
3158 | bs_class = no_effect; |
3159 | break; | |
3160 | case bp_catch_catch: | |
3161 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3162 | bs_class = bp_nostop; | |
3163 | else if (bs->stop) | |
3164 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3165 | break; | |
3166 | case bp_catch_throw: | |
3167 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3168 | bs_class = bp_nostop; | |
3169 | else if (bs->stop) | |
3170 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3171 | break; |
c906108c | 3172 | case bp_call_dummy: |
53a5351d JM |
3173 | /* Make sure the action is stop (silent or noisy), |
3174 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3175 | bs_class = bp_silent; |
3176 | retval.call_dummy = 1; | |
3177 | break; | |
3178 | } | |
c5aa993b | 3179 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3180 | } |
3181 | retval.main_action = current_action; | |
3182 | return retval; | |
3183 | } | |
3184 | ||
3185 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3186 | without hardware support). This isn't related to a specific bpstat, | |
3187 | just to things like whether watchpoints are set. */ | |
3188 | ||
c5aa993b | 3189 | int |
fba45db2 | 3190 | bpstat_should_step (void) |
c906108c SS |
3191 | { |
3192 | struct breakpoint *b; | |
3193 | ALL_BREAKPOINTS (b) | |
468d015d | 3194 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3195 | return 1; |
c906108c SS |
3196 | return 0; |
3197 | } | |
3198 | ||
3199 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3200 | int | |
fba45db2 | 3201 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3202 | { |
075f6582 DJ |
3203 | struct bp_location *bpt; |
3204 | ALL_BP_LOCATIONS (bpt) | |
468d015d | 3205 | if (breakpoint_enabled (bpt->owner) |
075f6582 DJ |
3206 | && bpt->inserted |
3207 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3208 | return 1; |
c906108c SS |
3209 | return 0; |
3210 | } | |
c906108c | 3211 | \f |
c5aa993b | 3212 | |
c906108c SS |
3213 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3214 | function returns another bpstat which contains only the catchpoints | |
3215 | on that first list, if any. */ | |
3216 | void | |
fba45db2 | 3217 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3218 | { |
3219 | struct bpstats root_bs[1]; | |
3220 | bpstat bs = root_bs; | |
3221 | struct breakpoint *ep; | |
3222 | char *dll_pathname; | |
3223 | ||
c906108c SS |
3224 | bpstat_clear (cp_list); |
3225 | root_bs->next = NULL; | |
c5aa993b JM |
3226 | |
3227 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3228 | { |
3229 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3230 | ep = ep_list->breakpoint_at; | |
3231 | if (ep == NULL) | |
c5aa993b JM |
3232 | break; |
3233 | if ((ep->type != bp_catch_load) && | |
3234 | (ep->type != bp_catch_unload) && | |
3235 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3236 | (ep->type != bp_catch_throw)) |
3237 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3238 | continue; |
3239 | ||
c906108c SS |
3240 | /* Yes; add it to the list. */ |
3241 | bs = bpstat_alloc (ep, bs); | |
3242 | *bs = *ep_list; | |
3243 | bs->next = NULL; | |
3244 | bs = root_bs->next; | |
c5aa993b | 3245 | |
c906108c SS |
3246 | #if defined(SOLIB_ADD) |
3247 | /* Also, for each triggered catchpoint, tag it with the name of | |
3248 | the library that caused this trigger. (We copy the name now, | |
3249 | because it's only guaranteed to be available NOW, when the | |
3250 | catchpoint triggers. Clients who may wish to know the name | |
3251 | later must get it from the catchpoint itself.) */ | |
3252 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3253 | xfree (ep->triggered_dll_pathname); |
c906108c | 3254 | if (ep->type == bp_catch_load) |
39f77062 KB |
3255 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3256 | PIDGET (inferior_ptid)); | |
c906108c | 3257 | else |
39f77062 KB |
3258 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3259 | PIDGET (inferior_ptid)); | |
c906108c SS |
3260 | #else |
3261 | dll_pathname = NULL; | |
3262 | #endif | |
3263 | if (dll_pathname) | |
3264 | { | |
53a5351d JM |
3265 | ep->triggered_dll_pathname = (char *) |
3266 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3267 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3268 | } | |
3269 | else | |
3270 | ep->triggered_dll_pathname = NULL; | |
3271 | } | |
c5aa993b | 3272 | |
c906108c SS |
3273 | *cp_list = bs; |
3274 | } | |
3275 | ||
c4093a6a | 3276 | /* Print B to gdb_stdout. */ |
c906108c | 3277 | static void |
c4093a6a JM |
3278 | print_one_breakpoint (struct breakpoint *b, |
3279 | CORE_ADDR *last_addr) | |
c906108c | 3280 | { |
52f0bd74 AC |
3281 | struct command_line *l; |
3282 | struct symbol *sym; | |
c4093a6a JM |
3283 | struct ep_type_description |
3284 | { | |
3285 | enum bptype type; | |
3286 | char *description; | |
3287 | }; | |
3288 | static struct ep_type_description bptypes[] = | |
c906108c | 3289 | { |
c5aa993b JM |
3290 | {bp_none, "?deleted?"}, |
3291 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3292 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3293 | {bp_until, "until"}, |
3294 | {bp_finish, "finish"}, | |
3295 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3296 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3297 | {bp_read_watchpoint, "read watchpoint"}, |
3298 | {bp_access_watchpoint, "acc watchpoint"}, | |
3299 | {bp_longjmp, "longjmp"}, | |
3300 | {bp_longjmp_resume, "longjmp resume"}, | |
3301 | {bp_step_resume, "step resume"}, | |
3302 | {bp_through_sigtramp, "sigtramp"}, | |
3303 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3304 | {bp_call_dummy, "call dummy"}, | |
3305 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3306 | {bp_thread_event, "thread events"}, |
1900040c | 3307 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3308 | {bp_catch_load, "catch load"}, |
3309 | {bp_catch_unload, "catch unload"}, | |
3310 | {bp_catch_fork, "catch fork"}, | |
3311 | {bp_catch_vfork, "catch vfork"}, | |
3312 | {bp_catch_exec, "catch exec"}, | |
3313 | {bp_catch_catch, "catch catch"}, | |
3314 | {bp_catch_throw, "catch throw"} | |
3315 | }; | |
c4093a6a | 3316 | |
c5aa993b JM |
3317 | static char *bpdisps[] = |
3318 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3319 | static char bpenables[] = "nynny"; |
c906108c | 3320 | char wrap_indent[80]; |
8b93c638 JM |
3321 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3322 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3323 | struct cleanup *bkpt_chain; |
c906108c | 3324 | |
c4093a6a | 3325 | annotate_record (); |
3b31d625 | 3326 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3327 | |
3328 | /* 1 */ | |
3329 | annotate_field (0); | |
8b93c638 | 3330 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3331 | |
3332 | /* 2 */ | |
3333 | annotate_field (1); | |
3334 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3335 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3336 | internal_error (__FILE__, __LINE__, |
3337 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3338 | (int) b->type); |
8b93c638 | 3339 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3340 | |
3341 | /* 3 */ | |
3342 | annotate_field (2); | |
8b93c638 | 3343 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3344 | |
3345 | /* 4 */ | |
3346 | annotate_field (3); | |
b5de0fa7 | 3347 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3348 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3349 | |
3350 | /* 5 and 6 */ | |
3351 | strcpy (wrap_indent, " "); | |
3352 | if (addressprint) | |
75ac9d7b MS |
3353 | { |
3354 | if (TARGET_ADDR_BIT <= 32) | |
3355 | strcat (wrap_indent, " "); | |
3356 | else | |
3357 | strcat (wrap_indent, " "); | |
3358 | } | |
c906108c | 3359 | |
3086aeae DJ |
3360 | if (b->ops != NULL && b->ops->print_one != NULL) |
3361 | b->ops->print_one (b, last_addr); | |
3362 | else | |
3363 | switch (b->type) | |
3364 | { | |
3365 | case bp_none: | |
3366 | internal_error (__FILE__, __LINE__, | |
3367 | "print_one_breakpoint: bp_none encountered\n"); | |
3368 | break; | |
c906108c | 3369 | |
3086aeae DJ |
3370 | case bp_watchpoint: |
3371 | case bp_hardware_watchpoint: | |
3372 | case bp_read_watchpoint: | |
3373 | case bp_access_watchpoint: | |
3374 | /* Field 4, the address, is omitted (which makes the columns | |
3375 | not line up too nicely with the headers, but the effect | |
3376 | is relatively readable). */ | |
3377 | if (addressprint) | |
3378 | ui_out_field_skip (uiout, "addr"); | |
3379 | annotate_field (5); | |
3380 | print_expression (b->exp, stb->stream); | |
3381 | ui_out_field_stream (uiout, "what", stb); | |
3382 | break; | |
3383 | ||
3384 | case bp_catch_load: | |
3385 | case bp_catch_unload: | |
3386 | /* Field 4, the address, is omitted (which makes the columns | |
3387 | not line up too nicely with the headers, but the effect | |
3388 | is relatively readable). */ | |
3389 | if (addressprint) | |
3390 | ui_out_field_skip (uiout, "addr"); | |
3391 | annotate_field (5); | |
3392 | if (b->dll_pathname == NULL) | |
3393 | { | |
3394 | ui_out_field_string (uiout, "what", "<any library>"); | |
3395 | ui_out_spaces (uiout, 1); | |
3396 | } | |
3397 | else | |
3398 | { | |
3399 | ui_out_text (uiout, "library \""); | |
3400 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3401 | ui_out_text (uiout, "\" "); | |
3402 | } | |
3403 | break; | |
3404 | ||
3405 | case bp_catch_fork: | |
3406 | case bp_catch_vfork: | |
3407 | /* Field 4, the address, is omitted (which makes the columns | |
3408 | not line up too nicely with the headers, but the effect | |
3409 | is relatively readable). */ | |
3410 | if (addressprint) | |
3411 | ui_out_field_skip (uiout, "addr"); | |
3412 | annotate_field (5); | |
3413 | if (b->forked_inferior_pid != 0) | |
3414 | { | |
3415 | ui_out_text (uiout, "process "); | |
3416 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3417 | ui_out_spaces (uiout, 1); | |
3418 | } | |
3419 | ||
3420 | case bp_catch_exec: | |
3421 | /* Field 4, the address, is omitted (which makes the columns | |
3422 | not line up too nicely with the headers, but the effect | |
3423 | is relatively readable). */ | |
3424 | if (addressprint) | |
3425 | ui_out_field_skip (uiout, "addr"); | |
3426 | annotate_field (5); | |
3427 | if (b->exec_pathname != NULL) | |
3428 | { | |
3429 | ui_out_text (uiout, "program \""); | |
3430 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3431 | ui_out_text (uiout, "\" "); | |
3432 | } | |
3433 | break; | |
3434 | ||
3435 | case bp_catch_catch: | |
3436 | /* Field 4, the address, is omitted (which makes the columns | |
3437 | not line up too nicely with the headers, but the effect | |
3438 | is relatively readable). */ | |
3439 | if (addressprint) | |
3440 | ui_out_field_skip (uiout, "addr"); | |
3441 | annotate_field (5); | |
3442 | ui_out_field_string (uiout, "what", "exception catch"); | |
3443 | ui_out_spaces (uiout, 1); | |
3444 | break; | |
3445 | ||
3446 | case bp_catch_throw: | |
3447 | /* Field 4, the address, is omitted (which makes the columns | |
3448 | not line up too nicely with the headers, but the effect | |
3449 | is relatively readable). */ | |
3450 | if (addressprint) | |
3451 | ui_out_field_skip (uiout, "addr"); | |
3452 | annotate_field (5); | |
3453 | ui_out_field_string (uiout, "what", "exception throw"); | |
3454 | ui_out_spaces (uiout, 1); | |
3455 | break; | |
3456 | ||
3457 | case bp_breakpoint: | |
3458 | case bp_hardware_breakpoint: | |
3459 | case bp_until: | |
3460 | case bp_finish: | |
3461 | case bp_longjmp: | |
3462 | case bp_longjmp_resume: | |
3463 | case bp_step_resume: | |
3464 | case bp_through_sigtramp: | |
3465 | case bp_watchpoint_scope: | |
3466 | case bp_call_dummy: | |
3467 | case bp_shlib_event: | |
3468 | case bp_thread_event: | |
3469 | case bp_overlay_event: | |
3470 | if (addressprint) | |
3471 | { | |
3472 | annotate_field (4); | |
0101ce28 JJ |
3473 | if (b->pending) |
3474 | { | |
3475 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
3476 | if (TARGET_ADDR_BIT <= 32) | |
3477 | ui_out_spaces (uiout, 2); | |
3478 | else | |
3479 | ui_out_spaces (uiout, 8); | |
3480 | } | |
3481 | else | |
3482 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
3483 | } |
3484 | annotate_field (5); | |
5cab636d | 3485 | *last_addr = b->loc->address; |
3086aeae DJ |
3486 | if (b->source_file) |
3487 | { | |
cf3a9e5b | 3488 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3489 | if (sym) |
3490 | { | |
3491 | ui_out_text (uiout, "in "); | |
3492 | ui_out_field_string (uiout, "func", | |
3493 | SYMBOL_PRINT_NAME (sym)); | |
3494 | ui_out_wrap_hint (uiout, wrap_indent); | |
3495 | ui_out_text (uiout, " at "); | |
3496 | } | |
3497 | ui_out_field_string (uiout, "file", b->source_file); | |
3498 | ui_out_text (uiout, ":"); | |
3499 | ui_out_field_int (uiout, "line", b->line_number); | |
3500 | } | |
0101ce28 JJ |
3501 | else if (b->pending) |
3502 | { | |
3503 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3504 | } | |
3086aeae DJ |
3505 | else |
3506 | { | |
5cab636d | 3507 | print_address_symbolic (b->loc->address, stb->stream, demangle, ""); |
3086aeae DJ |
3508 | ui_out_field_stream (uiout, "at", stb); |
3509 | } | |
3510 | break; | |
3511 | } | |
c906108c | 3512 | |
c4093a6a JM |
3513 | if (b->thread != -1) |
3514 | { | |
8b93c638 JM |
3515 | /* FIXME: This seems to be redundant and lost here; see the |
3516 | "stop only in" line a little further down. */ | |
3517 | ui_out_text (uiout, " thread "); | |
3518 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3519 | } |
3520 | ||
8b93c638 | 3521 | ui_out_text (uiout, "\n"); |
c4093a6a | 3522 | |
818dd999 | 3523 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3524 | { |
3525 | annotate_field (6); | |
8b93c638 | 3526 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3527 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3528 | the frame ID. */ | |
d0a55772 | 3529 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3530 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3531 | } |
3532 | ||
3533 | if (b->cond) | |
3534 | { | |
3535 | annotate_field (7); | |
8b93c638 JM |
3536 | ui_out_text (uiout, "\tstop only if "); |
3537 | print_expression (b->cond, stb->stream); | |
3538 | ui_out_field_stream (uiout, "cond", stb); | |
3539 | ui_out_text (uiout, "\n"); | |
c4093a6a | 3540 | } |
0101ce28 JJ |
3541 | |
3542 | if (b->pending && b->cond_string) | |
3543 | { | |
3544 | annotate_field (7); | |
3545 | ui_out_text (uiout, "\tstop only if "); | |
3546 | ui_out_field_string (uiout, "cond", b->cond_string); | |
3547 | ui_out_text (uiout, "\n"); | |
3548 | } | |
3549 | ||
c4093a6a JM |
3550 | if (b->thread != -1) |
3551 | { | |
3552 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3553 | ui_out_text (uiout, "\tstop only in thread "); |
3554 | ui_out_field_int (uiout, "thread", b->thread); | |
3555 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3556 | } |
3557 | ||
3558 | if (show_breakpoint_hit_counts && b->hit_count) | |
3559 | { | |
3560 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3561 | if (ep_is_catchpoint (b)) |
3562 | ui_out_text (uiout, "\tcatchpoint"); | |
3563 | else | |
3564 | ui_out_text (uiout, "\tbreakpoint"); | |
3565 | ui_out_text (uiout, " already hit "); | |
3566 | ui_out_field_int (uiout, "times", b->hit_count); | |
3567 | if (b->hit_count == 1) | |
3568 | ui_out_text (uiout, " time\n"); | |
3569 | else | |
3570 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3571 | } |
3572 | ||
fb40c209 AC |
3573 | /* Output the count also if it is zero, but only if this is |
3574 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3575 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3576 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3577 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3578 | |
c4093a6a JM |
3579 | if (b->ignore_count) |
3580 | { | |
3581 | annotate_field (8); | |
8b93c638 JM |
3582 | ui_out_text (uiout, "\tignore next "); |
3583 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3584 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3585 | } |
3586 | ||
3587 | if ((l = b->commands)) | |
3588 | { | |
3b31d625 EZ |
3589 | struct cleanup *script_chain; |
3590 | ||
c4093a6a | 3591 | annotate_field (9); |
3b31d625 | 3592 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3593 | print_command_lines (uiout, l, 4); |
3b31d625 | 3594 | do_cleanups (script_chain); |
c4093a6a | 3595 | } |
3b31d625 | 3596 | do_cleanups (bkpt_chain); |
8b93c638 | 3597 | do_cleanups (old_chain); |
c4093a6a | 3598 | } |
c5aa993b | 3599 | |
c4093a6a JM |
3600 | struct captured_breakpoint_query_args |
3601 | { | |
3602 | int bnum; | |
3603 | }; | |
c5aa993b | 3604 | |
c4093a6a | 3605 | static int |
2b65245e | 3606 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3607 | { |
3608 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3609 | struct breakpoint *b; |
c4093a6a JM |
3610 | CORE_ADDR dummy_addr = 0; |
3611 | ALL_BREAKPOINTS (b) | |
3612 | { | |
3613 | if (args->bnum == b->number) | |
c5aa993b | 3614 | { |
c4093a6a JM |
3615 | print_one_breakpoint (b, &dummy_addr); |
3616 | return GDB_RC_OK; | |
c5aa993b | 3617 | } |
c4093a6a JM |
3618 | } |
3619 | return GDB_RC_NONE; | |
3620 | } | |
c5aa993b | 3621 | |
c4093a6a | 3622 | enum gdb_rc |
2b65245e | 3623 | gdb_breakpoint_query (struct ui_out *uiout, int bnum) |
c4093a6a JM |
3624 | { |
3625 | struct captured_breakpoint_query_args args; | |
3626 | args.bnum = bnum; | |
3627 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3628 | an error. */ | |
2b65245e AC |
3629 | return catch_exceptions (uiout, do_captured_breakpoint_query, &args, |
3630 | NULL, RETURN_MASK_ALL); | |
c4093a6a | 3631 | } |
c5aa993b | 3632 | |
7f3b0473 AC |
3633 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3634 | catchpoints, et.al.). */ | |
3635 | ||
3636 | static int | |
3637 | user_settable_breakpoint (const struct breakpoint *b) | |
3638 | { | |
3639 | return (b->type == bp_breakpoint | |
3640 | || b->type == bp_catch_load | |
3641 | || b->type == bp_catch_unload | |
3642 | || b->type == bp_catch_fork | |
3643 | || b->type == bp_catch_vfork | |
3644 | || b->type == bp_catch_exec | |
3645 | || b->type == bp_catch_catch | |
3646 | || b->type == bp_catch_throw | |
3647 | || b->type == bp_hardware_breakpoint | |
3648 | || b->type == bp_watchpoint | |
3649 | || b->type == bp_read_watchpoint | |
3650 | || b->type == bp_access_watchpoint | |
3651 | || b->type == bp_hardware_watchpoint); | |
3652 | } | |
3653 | ||
3654 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3655 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3656 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3657 | |
c4093a6a | 3658 | static void |
fba45db2 | 3659 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3660 | { |
52f0bd74 | 3661 | struct breakpoint *b; |
c4093a6a | 3662 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3663 | int nr_printable_breakpoints; |
3b31d625 | 3664 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3665 | |
7f3b0473 AC |
3666 | /* Compute the number of rows in the table. */ |
3667 | nr_printable_breakpoints = 0; | |
3668 | ALL_BREAKPOINTS (b) | |
3669 | if (bnum == -1 | |
3670 | || bnum == b->number) | |
3671 | { | |
3672 | if (allflag || user_settable_breakpoint (b)) | |
3673 | nr_printable_breakpoints++; | |
3674 | } | |
3675 | ||
8b93c638 | 3676 | if (addressprint) |
3b31d625 EZ |
3677 | bkpttbl_chain |
3678 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3679 | "BreakpointTable"); | |
8b93c638 | 3680 | else |
3b31d625 EZ |
3681 | bkpttbl_chain |
3682 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3683 | "BreakpointTable"); | |
8b93c638 | 3684 | |
7f3b0473 | 3685 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3686 | annotate_breakpoints_headers (); |
3687 | if (nr_printable_breakpoints > 0) | |
3688 | annotate_field (0); | |
3689 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3690 | if (nr_printable_breakpoints > 0) | |
3691 | annotate_field (1); | |
3692 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3693 | if (nr_printable_breakpoints > 0) | |
3694 | annotate_field (2); | |
3695 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3696 | if (nr_printable_breakpoints > 0) | |
3697 | annotate_field (3); | |
3698 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3699 | if (addressprint) | |
7f3b0473 | 3700 | { |
d7faa9e7 AC |
3701 | if (nr_printable_breakpoints > 0) |
3702 | annotate_field (4); | |
7f3b0473 | 3703 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3704 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3705 | else |
b25959ec | 3706 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3707 | } |
d7faa9e7 AC |
3708 | if (nr_printable_breakpoints > 0) |
3709 | annotate_field (5); | |
3710 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3711 | ui_out_table_body (uiout); | |
3712 | if (nr_printable_breakpoints > 0) | |
3713 | annotate_breakpoints_table (); | |
7f3b0473 | 3714 | |
c4093a6a JM |
3715 | ALL_BREAKPOINTS (b) |
3716 | if (bnum == -1 | |
3717 | || bnum == b->number) | |
3718 | { | |
3719 | /* We only print out user settable breakpoints unless the | |
3720 | allflag is set. */ | |
7f3b0473 AC |
3721 | if (allflag || user_settable_breakpoint (b)) |
3722 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3723 | } |
3724 | ||
3b31d625 | 3725 | do_cleanups (bkpttbl_chain); |
698384cd | 3726 | |
7f3b0473 | 3727 | if (nr_printable_breakpoints == 0) |
c906108c | 3728 | { |
8b93c638 JM |
3729 | if (bnum == -1) |
3730 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3731 | else | |
3732 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3733 | bnum); | |
c906108c SS |
3734 | } |
3735 | else | |
c4093a6a JM |
3736 | { |
3737 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3738 | that a comparison of an unsigned with -1 is always false. */ | |
3739 | if (last_addr != (CORE_ADDR) -1) | |
3740 | set_next_address (last_addr); | |
3741 | } | |
c906108c | 3742 | |
c4093a6a JM |
3743 | /* FIXME? Should this be moved up so that it is only called when |
3744 | there have been breakpoints? */ | |
c906108c SS |
3745 | annotate_breakpoints_table_end (); |
3746 | } | |
3747 | ||
c906108c | 3748 | static void |
fba45db2 | 3749 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3750 | { |
3751 | int bnum = -1; | |
3752 | ||
3753 | if (bnum_exp) | |
bb518678 | 3754 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3755 | |
3756 | breakpoint_1 (bnum, 0); | |
3757 | } | |
3758 | ||
7a292a7a | 3759 | static void |
fba45db2 | 3760 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3761 | { |
3762 | int bnum = -1; | |
3763 | ||
3764 | if (bnum_exp) | |
bb518678 | 3765 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3766 | |
3767 | breakpoint_1 (bnum, 1); | |
3768 | } | |
3769 | ||
c906108c SS |
3770 | /* Print a message describing any breakpoints set at PC. */ |
3771 | ||
3772 | static void | |
fba45db2 | 3773 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c | 3774 | { |
52f0bd74 AC |
3775 | int others = 0; |
3776 | struct breakpoint *b; | |
c906108c SS |
3777 | |
3778 | ALL_BREAKPOINTS (b) | |
5cab636d | 3779 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3780 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 | 3781 | others++; |
c906108c SS |
3782 | if (others > 0) |
3783 | { | |
3784 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3785 | ALL_BREAKPOINTS (b) | |
5cab636d | 3786 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3787 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 MS |
3788 | { |
3789 | others--; | |
3790 | printf_filtered ("%d%s%s ", | |
3791 | b->number, | |
3792 | ((b->enable_state == bp_disabled || | |
3793 | b->enable_state == bp_shlib_disabled || | |
3794 | b->enable_state == bp_call_disabled) | |
3795 | ? " (disabled)" | |
3796 | : b->enable_state == bp_permanent | |
3797 | ? " (permanent)" | |
3798 | : ""), | |
3799 | (others > 1) ? "," | |
3800 | : ((others == 1) ? " and" : "")); | |
3801 | } | |
c906108c SS |
3802 | printf_filtered ("also set at pc "); |
3803 | print_address_numeric (pc, 1, gdb_stdout); | |
3804 | printf_filtered (".\n"); | |
3805 | } | |
3806 | } | |
3807 | \f | |
3808 | /* Set the default place to put a breakpoint | |
3809 | for the `break' command with no arguments. */ | |
3810 | ||
3811 | void | |
fba45db2 KB |
3812 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3813 | int line) | |
c906108c SS |
3814 | { |
3815 | default_breakpoint_valid = valid; | |
3816 | default_breakpoint_address = addr; | |
3817 | default_breakpoint_symtab = symtab; | |
3818 | default_breakpoint_line = line; | |
3819 | } | |
3820 | ||
e4f237da KB |
3821 | /* Return true iff it is meaningful to use the address member of |
3822 | BPT. For some breakpoint types, the address member is irrelevant | |
3823 | and it makes no sense to attempt to compare it to other addresses | |
3824 | (or use it for any other purpose either). | |
3825 | ||
3826 | More specifically, each of the following breakpoint types will always | |
3827 | have a zero valued address and we don't want check_duplicates() to mark | |
3828 | breakpoints of any of these types to be a duplicate of an actual | |
3829 | breakpoint at address zero: | |
3830 | ||
3831 | bp_watchpoint | |
3832 | bp_hardware_watchpoint | |
3833 | bp_read_watchpoint | |
3834 | bp_access_watchpoint | |
3835 | bp_catch_exec | |
3836 | bp_longjmp_resume | |
3837 | bp_catch_fork | |
3838 | bp_catch_vork */ | |
3839 | ||
3840 | static int | |
3841 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3842 | { | |
3843 | enum bptype type = bpt->type; | |
3844 | ||
3845 | return (type != bp_watchpoint | |
3846 | && type != bp_hardware_watchpoint | |
3847 | && type != bp_read_watchpoint | |
3848 | && type != bp_access_watchpoint | |
3849 | && type != bp_catch_exec | |
3850 | && type != bp_longjmp_resume | |
3851 | && type != bp_catch_fork | |
3852 | && type != bp_catch_vfork); | |
3853 | } | |
3854 | ||
9f60f21b | 3855 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3856 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3857 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3858 | If we have a permanent breakpoint at the same place as BPT, make |
3859 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3860 | |
3861 | static void | |
9f60f21b | 3862 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3863 | { |
075f6582 | 3864 | struct bp_location *b; |
52f0bd74 | 3865 | int count = 0; |
075f6582 | 3866 | struct bp_location *perm_bp = 0; |
5cab636d | 3867 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 3868 | asection *section = bpt->loc->section; |
c906108c | 3869 | |
e4f237da | 3870 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3871 | return; |
3872 | ||
075f6582 DJ |
3873 | ALL_BP_LOCATIONS (b) |
3874 | if (b->owner->enable_state != bp_disabled | |
3875 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3876 | && !b->owner->pending |
075f6582 DJ |
3877 | && b->owner->enable_state != bp_call_disabled |
3878 | && b->address == address /* address / overlay match */ | |
3879 | && (!overlay_debugging || b->section == section) | |
3880 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3881 | { |
c2c6d25f | 3882 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3883 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3884 | { |
3885 | perm_bp = b; | |
3886 | break; | |
3887 | } | |
3888 | ||
c5aa993b | 3889 | count++; |
075f6582 | 3890 | b->duplicate = count > 1; |
c5aa993b | 3891 | } |
c2c6d25f JM |
3892 | |
3893 | /* If we found a permanent breakpoint at this address, go over the | |
3894 | list again and declare all the other breakpoints there to be the | |
3895 | duplicates. */ | |
3896 | if (perm_bp) | |
3897 | { | |
075f6582 | 3898 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3899 | |
3900 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3901 | if (! perm_bp->inserted) |
8e65ff28 AC |
3902 | internal_error (__FILE__, __LINE__, |
3903 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3904 | "actually inserted"); |
3905 | ||
075f6582 | 3906 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3907 | if (b != perm_bp) |
3908 | { | |
075f6582 DJ |
3909 | if (b->owner->enable_state != bp_disabled |
3910 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3911 | && !b->owner->pending |
075f6582 DJ |
3912 | && b->owner->enable_state != bp_call_disabled |
3913 | && b->address == address /* address / overlay match */ | |
3914 | && (!overlay_debugging || b->section == section) | |
3915 | && breakpoint_address_is_meaningful (b->owner)) | |
3916 | { | |
3917 | if (b->inserted) | |
3918 | internal_error (__FILE__, __LINE__, | |
3919 | "another breakpoint was inserted on top of " | |
3920 | "a permanent breakpoint"); | |
3921 | ||
3922 | b->duplicate = 1; | |
3923 | } | |
c2c6d25f JM |
3924 | } |
3925 | } | |
c906108c SS |
3926 | } |
3927 | ||
76897487 KB |
3928 | static void |
3929 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
3930 | int bnum, int have_bnum) | |
3931 | { | |
3932 | char astr1[40]; | |
3933 | char astr2[40]; | |
3934 | ||
3935 | strcpy (astr1, local_hex_string_custom ((unsigned long) from_addr, "08l")); | |
3936 | strcpy (astr2, local_hex_string_custom ((unsigned long) to_addr, "08l")); | |
3937 | if (have_bnum) | |
3938 | warning ("Breakpoint %d address previously adjusted from %s to %s.", | |
3939 | bnum, astr1, astr2); | |
3940 | else | |
3941 | warning ("Breakpoint address adjusted from %s to %s.", astr1, astr2); | |
3942 | } | |
3943 | ||
3944 | /* Adjust a breakpoint's address to account for architectural constraints | |
3945 | on breakpoint placement. Return the adjusted address. Note: Very | |
3946 | few targets require this kind of adjustment. For most targets, | |
3947 | this function is simply the identity function. */ | |
3948 | ||
3949 | static CORE_ADDR | |
3950 | adjust_breakpoint_address (CORE_ADDR bpaddr) | |
3951 | { | |
3952 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
3953 | { | |
3954 | /* Very few targets need any kind of breakpoint adjustment. */ | |
3955 | return bpaddr; | |
3956 | } | |
3957 | else | |
3958 | { | |
3959 | CORE_ADDR adjusted_bpaddr; | |
3960 | ||
3961 | /* Some targets have architectural constraints on the placement | |
3962 | of breakpoint instructions. Obtain the adjusted address. */ | |
3963 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
3964 | bpaddr); | |
3965 | ||
3966 | /* An adjusted breakpoint address can significantly alter | |
3967 | a user's expectations. Print a warning if an adjustment | |
3968 | is required. */ | |
3969 | if (adjusted_bpaddr != bpaddr) | |
3970 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
3971 | ||
3972 | return adjusted_bpaddr; | |
3973 | } | |
3974 | } | |
3975 | ||
7cc221ef DJ |
3976 | /* Allocate a struct bp_location. */ |
3977 | ||
26bb91f3 | 3978 | static struct bp_location * |
e049a4b5 | 3979 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
3980 | { |
3981 | struct bp_location *loc, *loc_p; | |
3982 | ||
3983 | loc = xmalloc (sizeof (struct bp_location)); | |
3984 | memset (loc, 0, sizeof (*loc)); | |
3985 | ||
e049a4b5 DJ |
3986 | loc->owner = bpt; |
3987 | ||
3988 | switch (bp_type) | |
3989 | { | |
3990 | case bp_breakpoint: | |
3991 | case bp_until: | |
3992 | case bp_finish: | |
3993 | case bp_longjmp: | |
3994 | case bp_longjmp_resume: | |
3995 | case bp_step_resume: | |
3996 | case bp_through_sigtramp: | |
3997 | case bp_watchpoint_scope: | |
3998 | case bp_call_dummy: | |
3999 | case bp_shlib_event: | |
4000 | case bp_thread_event: | |
4001 | case bp_overlay_event: | |
4002 | case bp_catch_load: | |
4003 | case bp_catch_unload: | |
4004 | loc->loc_type = bp_loc_software_breakpoint; | |
4005 | break; | |
4006 | case bp_hardware_breakpoint: | |
4007 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4008 | break; | |
4009 | case bp_hardware_watchpoint: | |
4010 | case bp_read_watchpoint: | |
4011 | case bp_access_watchpoint: | |
4012 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4013 | break; | |
4014 | case bp_watchpoint: | |
4015 | case bp_catch_fork: | |
4016 | case bp_catch_vfork: | |
4017 | case bp_catch_exec: | |
4018 | case bp_catch_catch: | |
4019 | case bp_catch_throw: | |
4020 | loc->loc_type = bp_loc_other; | |
4021 | break; | |
4022 | default: | |
4023 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); | |
4024 | } | |
4025 | ||
7cc221ef DJ |
4026 | /* Add this breakpoint to the end of the chain. */ |
4027 | ||
4028 | loc_p = bp_location_chain; | |
4029 | if (loc_p == 0) | |
4030 | bp_location_chain = loc; | |
4031 | else | |
4032 | { | |
4033 | while (loc_p->next) | |
4034 | loc_p = loc_p->next; | |
4035 | loc_p->next = loc; | |
4036 | } | |
4037 | ||
4038 | return loc; | |
4039 | } | |
4040 | ||
4d28f7a8 KB |
4041 | /* set_raw_breakpoint() is a low level routine for allocating and |
4042 | partially initializing a breakpoint of type BPTYPE. The newly | |
4043 | created breakpoint's address, section, source file name, and line | |
4044 | number are provided by SAL. The newly created and partially | |
4045 | initialized breakpoint is added to the breakpoint chain and | |
4046 | is also returned as the value of this function. | |
c906108c | 4047 | |
4d28f7a8 KB |
4048 | It is expected that the caller will complete the initialization of |
4049 | the newly created breakpoint struct as well as output any status | |
4050 | information regarding the creation of a new breakpoint. In | |
4051 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4052 | number! Care should be taken to not allow an error() to occur | |
4053 | prior to completing the initialization of the breakpoint. If this | |
4054 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4055 | |
4056 | struct breakpoint * | |
4d28f7a8 | 4057 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4058 | { |
52f0bd74 | 4059 | struct breakpoint *b, *b1; |
c906108c SS |
4060 | |
4061 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4062 | memset (b, 0, sizeof (*b)); | |
e049a4b5 | 4063 | b->loc = allocate_bp_location (b, bptype); |
5cab636d DJ |
4064 | b->loc->requested_address = sal.pc; |
4065 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address); | |
c906108c SS |
4066 | if (sal.symtab == NULL) |
4067 | b->source_file = NULL; | |
4068 | else | |
4069 | b->source_file = savestring (sal.symtab->filename, | |
4070 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4071 | b->loc->section = sal.section; |
4d28f7a8 | 4072 | b->type = bptype; |
c906108c SS |
4073 | b->language = current_language->la_language; |
4074 | b->input_radix = input_radix; | |
4075 | b->thread = -1; | |
4076 | b->line_number = sal.line; | |
b5de0fa7 | 4077 | b->enable_state = bp_enabled; |
c906108c SS |
4078 | b->next = 0; |
4079 | b->silent = 0; | |
4080 | b->ignore_count = 0; | |
4081 | b->commands = NULL; | |
818dd999 | 4082 | b->frame_id = null_frame_id; |
c906108c SS |
4083 | b->dll_pathname = NULL; |
4084 | b->triggered_dll_pathname = NULL; | |
4085 | b->forked_inferior_pid = 0; | |
4086 | b->exec_pathname = NULL; | |
3086aeae | 4087 | b->ops = NULL; |
0101ce28 | 4088 | b->pending = 0; |
c906108c SS |
4089 | |
4090 | /* Add this breakpoint to the end of the chain | |
4091 | so that a list of breakpoints will come out in order | |
4092 | of increasing numbers. */ | |
4093 | ||
4094 | b1 = breakpoint_chain; | |
4095 | if (b1 == 0) | |
4096 | breakpoint_chain = b; | |
4097 | else | |
4098 | { | |
4099 | while (b1->next) | |
4100 | b1 = b1->next; | |
4101 | b1->next = b; | |
4102 | } | |
4103 | ||
9f60f21b | 4104 | check_duplicates (b); |
c906108c SS |
4105 | breakpoints_changed (); |
4106 | ||
4107 | return b; | |
4108 | } | |
4109 | ||
c2c6d25f JM |
4110 | |
4111 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4112 | instruction, hard-wired into the inferior's code. */ | |
4113 | void | |
4114 | make_breakpoint_permanent (struct breakpoint *b) | |
4115 | { | |
b5de0fa7 | 4116 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4117 | |
4118 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4119 | b->loc->inserted = 1; |
c2c6d25f JM |
4120 | } |
4121 | ||
1900040c MS |
4122 | static struct breakpoint * |
4123 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4124 | { | |
4125 | static int internal_breakpoint_number = -1; | |
4126 | struct symtab_and_line sal; | |
4127 | struct breakpoint *b; | |
4128 | ||
fe39c653 | 4129 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4130 | |
4131 | sal.pc = address; | |
4132 | sal.section = find_pc_overlay (sal.pc); | |
4133 | ||
4134 | b = set_raw_breakpoint (sal, type); | |
4135 | b->number = internal_breakpoint_number--; | |
4136 | b->disposition = disp_donttouch; | |
4137 | ||
4138 | return b; | |
4139 | } | |
4140 | ||
c906108c SS |
4141 | |
4142 | static void | |
fba45db2 | 4143 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4144 | { |
c906108c | 4145 | struct breakpoint *b; |
1900040c | 4146 | struct minimal_symbol *m; |
c906108c | 4147 | |
1900040c MS |
4148 | if (func_name == NULL) |
4149 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4150 | else | |
c906108c | 4151 | { |
5520a790 | 4152 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4153 | return; |
1900040c MS |
4154 | |
4155 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4156 | } |
c906108c | 4157 | |
b5de0fa7 | 4158 | b->enable_state = bp_disabled; |
c906108c SS |
4159 | b->silent = 1; |
4160 | if (func_name) | |
4fcf66da | 4161 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4162 | } |
4163 | ||
53a5351d JM |
4164 | /* Call this routine when stepping and nexting to enable a breakpoint |
4165 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4166 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4167 | ||
4168 | void | |
fba45db2 | 4169 | enable_longjmp_breakpoint (void) |
c906108c | 4170 | { |
52f0bd74 | 4171 | struct breakpoint *b; |
c906108c SS |
4172 | |
4173 | ALL_BREAKPOINTS (b) | |
4174 | if (b->type == bp_longjmp) | |
c5aa993b | 4175 | { |
b5de0fa7 | 4176 | b->enable_state = bp_enabled; |
9f60f21b | 4177 | check_duplicates (b); |
c5aa993b | 4178 | } |
c906108c SS |
4179 | } |
4180 | ||
4181 | void | |
fba45db2 | 4182 | disable_longjmp_breakpoint (void) |
c906108c | 4183 | { |
52f0bd74 | 4184 | struct breakpoint *b; |
c906108c SS |
4185 | |
4186 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4187 | if (b->type == bp_longjmp |
c906108c | 4188 | || b->type == bp_longjmp_resume) |
c5aa993b | 4189 | { |
b5de0fa7 | 4190 | b->enable_state = bp_disabled; |
9f60f21b | 4191 | check_duplicates (b); |
c5aa993b | 4192 | } |
c906108c SS |
4193 | } |
4194 | ||
1900040c MS |
4195 | static void |
4196 | create_overlay_event_breakpoint (char *func_name) | |
4197 | { | |
4198 | struct breakpoint *b; | |
4199 | struct minimal_symbol *m; | |
4200 | ||
5520a790 | 4201 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4202 | return; |
4203 | ||
4204 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4205 | bp_overlay_event); | |
4206 | b->addr_string = xstrdup (func_name); | |
4207 | ||
4208 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4209 | { |
4210 | b->enable_state = bp_enabled; | |
4211 | overlay_events_enabled = 1; | |
4212 | } | |
1900040c | 4213 | else |
c02f5703 MS |
4214 | { |
4215 | b->enable_state = bp_disabled; | |
4216 | overlay_events_enabled = 0; | |
4217 | } | |
1900040c MS |
4218 | } |
4219 | ||
4220 | void | |
4221 | enable_overlay_breakpoints (void) | |
4222 | { | |
52f0bd74 | 4223 | struct breakpoint *b; |
1900040c MS |
4224 | |
4225 | ALL_BREAKPOINTS (b) | |
4226 | if (b->type == bp_overlay_event) | |
4227 | { | |
4228 | b->enable_state = bp_enabled; | |
4229 | check_duplicates (b); | |
c02f5703 | 4230 | overlay_events_enabled = 1; |
1900040c MS |
4231 | } |
4232 | } | |
4233 | ||
4234 | void | |
4235 | disable_overlay_breakpoints (void) | |
4236 | { | |
52f0bd74 | 4237 | struct breakpoint *b; |
1900040c MS |
4238 | |
4239 | ALL_BREAKPOINTS (b) | |
4240 | if (b->type == bp_overlay_event) | |
4241 | { | |
4242 | b->enable_state = bp_disabled; | |
4243 | check_duplicates (b); | |
c02f5703 | 4244 | overlay_events_enabled = 0; |
1900040c MS |
4245 | } |
4246 | } | |
4247 | ||
c4093a6a | 4248 | struct breakpoint * |
fba45db2 | 4249 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4250 | { |
4251 | struct breakpoint *b; | |
c4093a6a | 4252 | |
1900040c | 4253 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4254 | |
b5de0fa7 | 4255 | b->enable_state = bp_enabled; |
c4093a6a | 4256 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5cab636d | 4257 | xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4258 | |
4259 | return b; | |
4260 | } | |
4261 | ||
4262 | void | |
4263 | remove_thread_event_breakpoints (void) | |
4264 | { | |
4265 | struct breakpoint *b, *temp; | |
4266 | ||
4267 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4268 | if (b->type == bp_thread_event) | |
4269 | delete_breakpoint (b); | |
4270 | } | |
4271 | ||
0101ce28 JJ |
4272 | struct captured_parse_breakpoint_args |
4273 | { | |
4274 | char **arg_p; | |
4275 | struct symtabs_and_lines *sals_p; | |
4276 | char ***addr_string_p; | |
4277 | int *not_found_ptr; | |
4278 | }; | |
4279 | ||
4280 | struct lang_and_radix | |
4281 | { | |
4282 | enum language lang; | |
4283 | int radix; | |
4284 | }; | |
4285 | ||
4286 | /* Cleanup helper routine to restore the current language and | |
4287 | input radix. */ | |
4288 | static void | |
4289 | do_restore_lang_radix_cleanup (void *old) | |
4290 | { | |
4291 | struct lang_and_radix *p = old; | |
4292 | set_language (p->lang); | |
4293 | input_radix = p->radix; | |
4294 | } | |
4295 | ||
4296 | /* Try and resolve a pending breakpoint. */ | |
4297 | static int | |
4298 | resolve_pending_breakpoint (struct breakpoint *b) | |
4299 | { | |
4300 | /* Try and reparse the breakpoint in case the shared library | |
4301 | is now loaded. */ | |
4302 | struct symtabs_and_lines sals; | |
4303 | struct symtab_and_line pending_sal; | |
4304 | char **cond_string = (char **) NULL; | |
4305 | char *copy_arg = b->addr_string; | |
4306 | char **addr_string; | |
4307 | char *errmsg; | |
4308 | int rc; | |
4309 | int not_found = 0; | |
4310 | struct ui_file *old_gdb_stderr; | |
4311 | struct lang_and_radix old_lr; | |
4312 | struct cleanup *old_chain; | |
4313 | ||
4314 | /* Set language, input-radix, then reissue breakpoint command. | |
4315 | Ensure the language and input-radix are restored afterwards. */ | |
4316 | old_lr.lang = current_language->la_language; | |
4317 | old_lr.radix = input_radix; | |
4318 | old_chain = make_cleanup (do_restore_lang_radix_cleanup, &old_lr); | |
4319 | ||
4320 | set_language (b->language); | |
4321 | input_radix = b->input_radix; | |
4322 | rc = break_command_1 (b->addr_string, b->flag, b->from_tty, b); | |
4323 | ||
4324 | if (rc == GDB_RC_OK) | |
4325 | /* Pending breakpoint has been resolved. */ | |
4326 | printf_filtered ("Pending breakpoint \"%s\" resolved\n", b->addr_string); | |
4327 | ||
4328 | do_cleanups (old_chain); | |
4329 | return rc; | |
4330 | } | |
4331 | ||
cae688ec JJ |
4332 | #ifdef SOLIB_ADD |
4333 | void | |
4334 | remove_solib_event_breakpoints (void) | |
4335 | { | |
4336 | struct breakpoint *b, *temp; | |
4337 | ||
4338 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4339 | if (b->type == bp_shlib_event) | |
4340 | delete_breakpoint (b); | |
4341 | } | |
4342 | ||
4343 | struct breakpoint * | |
4344 | create_solib_event_breakpoint (CORE_ADDR address) | |
4345 | { | |
4346 | struct breakpoint *b; | |
4347 | ||
4348 | b = create_internal_breakpoint (address, bp_shlib_event); | |
4349 | return b; | |
4350 | } | |
4351 | ||
4352 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4353 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4354 | ||
4355 | void | |
4356 | disable_breakpoints_in_shlibs (int silent) | |
4357 | { | |
4358 | struct breakpoint *b; | |
4359 | int disabled_shlib_breaks = 0; | |
4360 | ||
4361 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4362 | ALL_BREAKPOINTS (b) | |
4363 | { | |
4364 | #if defined (PC_SOLIB) | |
4365 | if (((b->type == bp_breakpoint) || | |
4366 | (b->type == bp_hardware_breakpoint)) && | |
4367 | breakpoint_enabled (b) && | |
4368 | !b->loc->duplicate && | |
4369 | PC_SOLIB (b->loc->address)) | |
4370 | { | |
4371 | b->enable_state = bp_shlib_disabled; | |
4372 | if (!silent) | |
4373 | { | |
4374 | if (!disabled_shlib_breaks) | |
4375 | { | |
4376 | target_terminal_ours_for_output (); | |
4377 | warning ("Temporarily disabling shared library breakpoints:"); | |
4378 | } | |
4379 | disabled_shlib_breaks = 1; | |
4380 | warning ("breakpoint #%d ", b->number); | |
4381 | } | |
4382 | } | |
4383 | #endif | |
4384 | } | |
4385 | } | |
4386 | ||
c906108c SS |
4387 | /* Try to reenable any breakpoints in shared libraries. */ |
4388 | void | |
fba45db2 | 4389 | re_enable_breakpoints_in_shlibs (void) |
c906108c | 4390 | { |
0101ce28 | 4391 | struct breakpoint *b, *tmp; |
c906108c | 4392 | |
0101ce28 JJ |
4393 | ALL_BREAKPOINTS_SAFE (b, tmp) |
4394 | { | |
b5de0fa7 | 4395 | if (b->enable_state == bp_shlib_disabled) |
0101ce28 JJ |
4396 | { |
4397 | char buf[1], *lib; | |
4398 | ||
4399 | /* Do not reenable the breakpoint if the shared library | |
4400 | is still not mapped in. */ | |
4401 | lib = PC_SOLIB (b->loc->address); | |
4402 | if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0) | |
4403 | b->enable_state = bp_enabled; | |
4404 | } | |
4405 | else if (b->pending && (b->enable_state == bp_enabled)) | |
4406 | { | |
4407 | if (resolve_pending_breakpoint (b) == GDB_RC_OK) | |
4408 | delete_breakpoint (b); | |
4409 | } | |
4410 | } | |
c906108c SS |
4411 | } |
4412 | ||
4413 | #endif | |
4414 | ||
4415 | static void | |
fba45db2 KB |
4416 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4417 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4418 | { |
c5aa993b | 4419 | struct breakpoint *b; |
c906108c | 4420 | struct symtabs_and_lines sals; |
c5aa993b JM |
4421 | struct cleanup *old_chain; |
4422 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4423 | char *addr_start = hookname; |
4424 | char *addr_end = NULL; | |
4425 | char **canonical = (char **) NULL; | |
4426 | int thread = -1; /* All threads. */ | |
4427 | ||
c906108c | 4428 | /* Set a breakpoint on the specified hook. */ |
68219205 | 4429 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical, NULL); |
c906108c | 4430 | addr_end = hookname; |
c5aa993b | 4431 | |
c906108c SS |
4432 | if (sals.nelts == 0) |
4433 | { | |
4434 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4435 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4436 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4437 | return; | |
4438 | } | |
4439 | if (sals.nelts != 1) | |
4440 | { | |
53a5351d | 4441 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4442 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4443 | return; | |
4444 | } | |
4445 | ||
53a5351d JM |
4446 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4447 | in case the following errors out. */ | |
b8c9b27d | 4448 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4449 | if (canonical != (char **) NULL) |
c906108c | 4450 | { |
b8c9b27d | 4451 | make_cleanup (xfree, canonical); |
c906108c SS |
4452 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4453 | if (canonical[0] != NULL) | |
b8c9b27d | 4454 | make_cleanup (xfree, canonical[0]); |
c906108c | 4455 | } |
c5aa993b | 4456 | |
c906108c | 4457 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4458 | |
c906108c | 4459 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4460 | if (canonical != (char **) NULL) |
c906108c | 4461 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4462 | |
4d28f7a8 | 4463 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4464 | set_breakpoint_count (breakpoint_count + 1); |
4465 | b->number = breakpoint_count; | |
4466 | b->cond = NULL; | |
53a5351d JM |
4467 | b->cond_string = (cond_string == NULL) ? |
4468 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4469 | b->thread = thread; |
c5aa993b JM |
4470 | |
4471 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4472 | b->addr_string = canonical[0]; |
4473 | else if (addr_start) | |
4474 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4475 | |
b5de0fa7 EZ |
4476 | b->enable_state = bp_enabled; |
4477 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4478 | |
c906108c SS |
4479 | if (dll_pathname == NULL) |
4480 | b->dll_pathname = NULL; | |
4481 | else | |
4482 | { | |
4483 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4484 | strcpy (b->dll_pathname, dll_pathname); | |
4485 | } | |
c5aa993b | 4486 | |
c906108c SS |
4487 | mention (b); |
4488 | do_cleanups (old_chain); | |
4489 | } | |
4490 | ||
4491 | void | |
fba45db2 KB |
4492 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4493 | char *dll_pathname, char *cond_string) | |
c906108c | 4494 | { |
53a5351d JM |
4495 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4496 | cond_string, bp_catch_load); | |
c906108c SS |
4497 | } |
4498 | ||
4499 | void | |
fba45db2 KB |
4500 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4501 | char *dll_pathname, char *cond_string) | |
c906108c | 4502 | { |
53a5351d JM |
4503 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4504 | cond_string, bp_catch_unload); | |
c906108c SS |
4505 | } |
4506 | ||
4507 | static void | |
fba45db2 KB |
4508 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4509 | enum bptype bp_kind) | |
c906108c | 4510 | { |
c5aa993b JM |
4511 | struct symtab_and_line sal; |
4512 | struct breakpoint *b; | |
4513 | int thread = -1; /* All threads. */ | |
4514 | ||
fe39c653 | 4515 | init_sal (&sal); |
c906108c SS |
4516 | sal.pc = 0; |
4517 | sal.symtab = NULL; | |
4518 | sal.line = 0; | |
c5aa993b | 4519 | |
4d28f7a8 | 4520 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4521 | set_breakpoint_count (breakpoint_count + 1); |
4522 | b->number = breakpoint_count; | |
4523 | b->cond = NULL; | |
53a5351d JM |
4524 | b->cond_string = (cond_string == NULL) ? |
4525 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4526 | b->thread = thread; |
4527 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4528 | b->enable_state = bp_enabled; |
4529 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4530 | b->forked_inferior_pid = 0; |
c5aa993b | 4531 | |
c906108c SS |
4532 | mention (b); |
4533 | } | |
4534 | ||
4535 | void | |
fba45db2 | 4536 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4537 | { |
4538 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4539 | } | |
c5aa993b | 4540 | |
c906108c | 4541 | void |
fba45db2 | 4542 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4543 | { |
4544 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4545 | } | |
4546 | ||
4547 | void | |
fba45db2 | 4548 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4549 | { |
c5aa993b JM |
4550 | struct symtab_and_line sal; |
4551 | struct breakpoint *b; | |
4552 | int thread = -1; /* All threads. */ | |
c906108c | 4553 | |
fe39c653 | 4554 | init_sal (&sal); |
c906108c SS |
4555 | sal.pc = 0; |
4556 | sal.symtab = NULL; | |
4557 | sal.line = 0; | |
4558 | ||
4d28f7a8 | 4559 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4560 | set_breakpoint_count (breakpoint_count + 1); |
4561 | b->number = breakpoint_count; | |
4562 | b->cond = NULL; | |
53a5351d JM |
4563 | b->cond_string = (cond_string == NULL) ? |
4564 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4565 | b->thread = thread; |
4566 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4567 | b->enable_state = bp_enabled; |
4568 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4569 | |
c906108c SS |
4570 | mention (b); |
4571 | } | |
4572 | ||
4573 | static int | |
fba45db2 | 4574 | hw_breakpoint_used_count (void) |
c906108c | 4575 | { |
52f0bd74 | 4576 | struct breakpoint *b; |
c906108c SS |
4577 | int i = 0; |
4578 | ||
4579 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4580 | { |
b5de0fa7 | 4581 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4582 | i++; |
4583 | } | |
c906108c SS |
4584 | |
4585 | return i; | |
4586 | } | |
4587 | ||
4588 | static int | |
fba45db2 | 4589 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4590 | { |
52f0bd74 | 4591 | struct breakpoint *b; |
c906108c SS |
4592 | int i = 0; |
4593 | ||
4594 | *other_type_used = 0; | |
4595 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4596 | { |
468d015d | 4597 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4598 | { |
4599 | if (b->type == type) | |
4600 | i++; | |
4601 | else if ((b->type == bp_hardware_watchpoint || | |
4602 | b->type == bp_read_watchpoint || | |
468d015d | 4603 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4604 | *other_type_used = 1; |
4605 | } | |
4606 | } | |
c906108c SS |
4607 | return i; |
4608 | } | |
4609 | ||
53a5351d JM |
4610 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4611 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4612 | |
53a5351d JM |
4613 | FIXME - This ought to be done by setting a temporary breakpoint |
4614 | that gets deleted automatically... */ | |
c906108c SS |
4615 | |
4616 | void | |
818dd999 | 4617 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4618 | { |
52f0bd74 | 4619 | struct breakpoint *b; |
c906108c SS |
4620 | |
4621 | ALL_BREAKPOINTS (b) | |
4622 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4623 | { |
5cab636d DJ |
4624 | b->loc->requested_address = pc; |
4625 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address); | |
b5de0fa7 | 4626 | b->enable_state = bp_enabled; |
818dd999 | 4627 | b->frame_id = frame_id; |
9f60f21b | 4628 | check_duplicates (b); |
c5aa993b JM |
4629 | return; |
4630 | } | |
c906108c SS |
4631 | } |
4632 | ||
4633 | void | |
fba45db2 | 4634 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4635 | { |
c5aa993b | 4636 | struct breakpoint *b; |
c906108c SS |
4637 | |
4638 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4639 | { |
4640 | if (((b->type == bp_watchpoint) | |
4641 | || (b->type == bp_hardware_watchpoint) | |
4642 | || (b->type == bp_read_watchpoint) | |
4643 | || (b->type == bp_access_watchpoint) | |
4644 | || ep_is_exception_catchpoint (b)) | |
468d015d | 4645 | && breakpoint_enabled (b)) |
c5aa993b | 4646 | { |
b5de0fa7 | 4647 | b->enable_state = bp_call_disabled; |
9f60f21b | 4648 | check_duplicates (b); |
c5aa993b JM |
4649 | } |
4650 | } | |
c906108c SS |
4651 | } |
4652 | ||
4653 | void | |
fba45db2 | 4654 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4655 | { |
c5aa993b | 4656 | struct breakpoint *b; |
c906108c SS |
4657 | |
4658 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4659 | { |
4660 | if (((b->type == bp_watchpoint) | |
4661 | || (b->type == bp_hardware_watchpoint) | |
4662 | || (b->type == bp_read_watchpoint) | |
4663 | || (b->type == bp_access_watchpoint) | |
4664 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4665 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4666 | { |
b5de0fa7 | 4667 | b->enable_state = bp_enabled; |
9f60f21b | 4668 | check_duplicates (b); |
c5aa993b JM |
4669 | } |
4670 | } | |
c906108c SS |
4671 | } |
4672 | ||
4673 | ||
4674 | /* Set a breakpoint that will evaporate an end of command | |
4675 | at address specified by SAL. | |
4676 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4677 | ||
4678 | struct breakpoint * | |
818dd999 | 4679 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4680 | enum bptype type) |
c906108c | 4681 | { |
52f0bd74 | 4682 | struct breakpoint *b; |
4d28f7a8 | 4683 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4684 | b->enable_state = bp_enabled; |
4685 | b->disposition = disp_donttouch; | |
818dd999 | 4686 | b->frame_id = frame_id; |
c906108c SS |
4687 | |
4688 | /* If we're debugging a multi-threaded program, then we | |
4689 | want momentary breakpoints to be active in only a | |
4690 | single thread of control. */ | |
39f77062 KB |
4691 | if (in_thread_list (inferior_ptid)) |
4692 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4693 | |
4694 | return b; | |
4695 | } | |
c906108c | 4696 | \f |
c5aa993b | 4697 | |
c906108c SS |
4698 | /* Tell the user we have just set a breakpoint B. */ |
4699 | ||
4700 | static void | |
fba45db2 | 4701 | mention (struct breakpoint *b) |
c906108c SS |
4702 | { |
4703 | int say_where = 0; | |
3b31d625 | 4704 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4705 | struct ui_stream *stb; |
4706 | ||
4707 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4708 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
4709 | |
4710 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4711 | watchpoint) other than breakpoint creation. It should be possible to | |
4712 | clean this up and at the same time replace the random calls to | |
4713 | breakpoint_changed with this hook, as has already been done for | |
4714 | delete_breakpoint_hook and so on. */ | |
4715 | if (create_breakpoint_hook) | |
4716 | create_breakpoint_hook (b); | |
104c1213 | 4717 | breakpoint_create_event (b->number); |
c906108c | 4718 | |
3086aeae DJ |
4719 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4720 | b->ops->print_mention (b); | |
4721 | else | |
4722 | switch (b->type) | |
4723 | { | |
4724 | case bp_none: | |
4725 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4726 | break; | |
4727 | case bp_watchpoint: | |
4728 | ui_out_text (uiout, "Watchpoint "); | |
4729 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4730 | ui_out_field_int (uiout, "number", b->number); | |
4731 | ui_out_text (uiout, ": "); | |
4732 | print_expression (b->exp, stb->stream); | |
4733 | ui_out_field_stream (uiout, "exp", stb); | |
4734 | do_cleanups (ui_out_chain); | |
4735 | break; | |
4736 | case bp_hardware_watchpoint: | |
4737 | ui_out_text (uiout, "Hardware watchpoint "); | |
4738 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4739 | ui_out_field_int (uiout, "number", b->number); | |
4740 | ui_out_text (uiout, ": "); | |
4741 | print_expression (b->exp, stb->stream); | |
4742 | ui_out_field_stream (uiout, "exp", stb); | |
4743 | do_cleanups (ui_out_chain); | |
4744 | break; | |
4745 | case bp_read_watchpoint: | |
4746 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4747 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4748 | ui_out_field_int (uiout, "number", b->number); | |
4749 | ui_out_text (uiout, ": "); | |
4750 | print_expression (b->exp, stb->stream); | |
4751 | ui_out_field_stream (uiout, "exp", stb); | |
4752 | do_cleanups (ui_out_chain); | |
4753 | break; | |
4754 | case bp_access_watchpoint: | |
4755 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4756 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4757 | ui_out_field_int (uiout, "number", b->number); | |
4758 | ui_out_text (uiout, ": "); | |
4759 | print_expression (b->exp, stb->stream); | |
4760 | ui_out_field_stream (uiout, "exp", stb); | |
4761 | do_cleanups (ui_out_chain); | |
4762 | break; | |
4763 | case bp_breakpoint: | |
4764 | if (ui_out_is_mi_like_p (uiout)) | |
4765 | { | |
4766 | say_where = 0; | |
4767 | break; | |
4768 | } | |
4769 | printf_filtered ("Breakpoint %d", b->number); | |
4770 | say_where = 1; | |
4771 | break; | |
4772 | case bp_hardware_breakpoint: | |
4773 | if (ui_out_is_mi_like_p (uiout)) | |
4774 | { | |
4775 | say_where = 0; | |
4776 | break; | |
4777 | } | |
4778 | printf_filtered ("Hardware assisted breakpoint %d", b->number); | |
4779 | say_where = 1; | |
4780 | break; | |
4781 | case bp_catch_load: | |
4782 | case bp_catch_unload: | |
4783 | printf_filtered ("Catchpoint %d (%s %s)", | |
4784 | b->number, | |
4785 | (b->type == bp_catch_load) ? "load" : "unload", | |
4786 | (b->dll_pathname != NULL) ? | |
4787 | b->dll_pathname : "<any library>"); | |
4788 | break; | |
4789 | case bp_catch_fork: | |
4790 | case bp_catch_vfork: | |
4791 | printf_filtered ("Catchpoint %d (%s)", | |
4792 | b->number, | |
4793 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4794 | break; | |
4795 | case bp_catch_exec: | |
4796 | printf_filtered ("Catchpoint %d (exec)", | |
4797 | b->number); | |
4798 | break; | |
4799 | case bp_catch_catch: | |
4800 | case bp_catch_throw: | |
4801 | printf_filtered ("Catchpoint %d (%s)", | |
4802 | b->number, | |
4803 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
4804 | break; | |
4805 | ||
4806 | case bp_until: | |
4807 | case bp_finish: | |
4808 | case bp_longjmp: | |
4809 | case bp_longjmp_resume: | |
4810 | case bp_step_resume: | |
4811 | case bp_through_sigtramp: | |
4812 | case bp_call_dummy: | |
4813 | case bp_watchpoint_scope: | |
4814 | case bp_shlib_event: | |
4815 | case bp_thread_event: | |
4816 | case bp_overlay_event: | |
4817 | break; | |
4818 | } | |
c906108c | 4819 | |
c906108c SS |
4820 | if (say_where) |
4821 | { | |
0101ce28 | 4822 | if (b->pending) |
c906108c | 4823 | { |
0101ce28 JJ |
4824 | printf_filtered (" (%s) pending.", b->addr_string); |
4825 | } | |
4826 | else | |
4827 | { | |
4828 | if (addressprint || b->source_file == NULL) | |
4829 | { | |
4830 | printf_filtered (" at "); | |
4831 | print_address_numeric (b->loc->address, 1, gdb_stdout); | |
4832 | } | |
4833 | if (b->source_file) | |
4834 | printf_filtered (": file %s, line %d.", | |
4835 | b->source_file, b->line_number); | |
c906108c | 4836 | } |
c906108c | 4837 | } |
8b93c638 | 4838 | do_cleanups (old_chain); |
9dc5e2a9 | 4839 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4840 | return; |
c906108c SS |
4841 | printf_filtered ("\n"); |
4842 | } | |
c906108c | 4843 | \f |
c5aa993b | 4844 | |
c3f6f71d JM |
4845 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4846 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4847 | COND[i] and COND_STRING[i] values. | |
4848 | ||
0101ce28 JJ |
4849 | The parameter PENDING_BP points to a pending breakpoint that is |
4850 | the basis of the breakpoints currently being created. The pending | |
4851 | breakpoint may contain a separate condition string or commands | |
4852 | that were added after the initial pending breakpoint was created. | |
4853 | ||
c3f6f71d JM |
4854 | NOTE: If the function succeeds, the caller is expected to cleanup |
4855 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4856 | array contents). If the function fails (error() is called), the | |
4857 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4858 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4859 | |
4860 | static void | |
c3f6f71d JM |
4861 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4862 | struct expression **cond, char **cond_string, | |
4863 | enum bptype type, enum bpdisp disposition, | |
0101ce28 JJ |
4864 | int thread, int ignore_count, int from_tty, |
4865 | struct breakpoint *pending_bp) | |
c906108c | 4866 | { |
c3f6f71d JM |
4867 | if (type == bp_hardware_breakpoint) |
4868 | { | |
4869 | int i = hw_breakpoint_used_count (); | |
4870 | int target_resources_ok = | |
4871 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4872 | i + sals.nelts, 0); | |
4873 | if (target_resources_ok == 0) | |
4874 | error ("No hardware breakpoint support in the target."); | |
4875 | else if (target_resources_ok < 0) | |
4876 | error ("Hardware breakpoints used exceeds limit."); | |
4877 | } | |
c906108c | 4878 | |
c3f6f71d JM |
4879 | /* Now set all the breakpoints. */ |
4880 | { | |
4881 | int i; | |
4882 | for (i = 0; i < sals.nelts; i++) | |
4883 | { | |
4884 | struct breakpoint *b; | |
4885 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4886 | |
c3f6f71d JM |
4887 | if (from_tty) |
4888 | describe_other_breakpoints (sal.pc, sal.section); | |
4889 | ||
4d28f7a8 | 4890 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4891 | set_breakpoint_count (breakpoint_count + 1); |
4892 | b->number = breakpoint_count; | |
c3f6f71d JM |
4893 | b->cond = cond[i]; |
4894 | b->thread = thread; | |
d8ef46f5 DJ |
4895 | if (addr_string[i]) |
4896 | b->addr_string = addr_string[i]; | |
4897 | else | |
4898 | /* addr_string has to be used or breakpoint_re_set will delete | |
4899 | me. */ | |
5cab636d | 4900 | xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address)); |
c3f6f71d JM |
4901 | b->cond_string = cond_string[i]; |
4902 | b->ignore_count = ignore_count; | |
b5de0fa7 | 4903 | b->enable_state = bp_enabled; |
c3f6f71d | 4904 | b->disposition = disposition; |
0101ce28 JJ |
4905 | /* If resolving a pending breakpoint, a check must be made to see if |
4906 | the user has specified a new condition or commands for the | |
4907 | breakpoint. A new condition will override any condition that was | |
4908 | initially specified with the initial breakpoint command. */ | |
4909 | if (pending_bp) | |
4910 | { | |
4911 | char *arg; | |
4912 | if (pending_bp->cond_string) | |
4913 | { | |
4914 | arg = pending_bp->cond_string; | |
4915 | b->cond_string = savestring (arg, strlen (arg)); | |
4916 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
4917 | if (*arg) | |
4918 | error ("Junk at end of pending breakpoint condition expression"); | |
4919 | } | |
4920 | /* If there are commands associated with the breakpoint, they should | |
4921 | be copied too. */ | |
4922 | if (pending_bp->commands) | |
4923 | b->commands = copy_command_lines (pending_bp->commands); | |
4924 | } | |
c3f6f71d JM |
4925 | mention (b); |
4926 | } | |
4927 | } | |
4928 | } | |
c906108c | 4929 | |
c3f6f71d JM |
4930 | /* Parse ARG which is assumed to be a SAL specification possibly |
4931 | followed by conditionals. On return, SALS contains an array of SAL | |
4932 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4933 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4934 | |
b9362cc7 | 4935 | static void |
c3f6f71d JM |
4936 | parse_breakpoint_sals (char **address, |
4937 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
4938 | char ***addr_string, |
4939 | int *not_found_ptr) | |
c3f6f71d JM |
4940 | { |
4941 | char *addr_start = *address; | |
4942 | *addr_string = NULL; | |
4943 | /* If no arg given, or if first arg is 'if ', use the default | |
4944 | breakpoint. */ | |
4945 | if ((*address) == NULL | |
4946 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4947 | { |
4948 | if (default_breakpoint_valid) | |
4949 | { | |
c3f6f71d | 4950 | struct symtab_and_line sal; |
fe39c653 | 4951 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 4952 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
4953 | xmalloc (sizeof (struct symtab_and_line)); |
4954 | sal.pc = default_breakpoint_address; | |
4955 | sal.line = default_breakpoint_line; | |
4956 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4957 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4958 | sals->sals[0] = sal; |
4959 | sals->nelts = 1; | |
c906108c SS |
4960 | } |
4961 | else | |
4962 | error ("No default breakpoint address now."); | |
4963 | } | |
4964 | else | |
4965 | { | |
c906108c | 4966 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4967 | current_source_symtab (which is decode_line_1's default). This |
4968 | should produce the results we want almost all of the time while | |
1aeae86e AF |
4969 | leaving default_breakpoint_* alone. |
4970 | ObjC: However, don't match an Objective-C method name which | |
4971 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 4972 | |
c214a6fd | 4973 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 4974 | |
c906108c | 4975 | if (default_breakpoint_valid |
0378c332 | 4976 | && (!cursal.symtab |
1aeae86e AF |
4977 | || ((strchr ("+-", (*address)[0]) != NULL) |
4978 | && ((*address)[1] != '[')))) | |
c3f6f71d | 4979 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
4980 | default_breakpoint_line, addr_string, |
4981 | not_found_ptr); | |
c906108c | 4982 | else |
0101ce28 JJ |
4983 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
4984 | addr_string, not_found_ptr); | |
c906108c | 4985 | } |
c3f6f71d JM |
4986 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4987 | if (sals->nelts > 0 && *addr_string == NULL) | |
4988 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4989 | if (addr_start != (*address)) | |
c906108c | 4990 | { |
c3f6f71d JM |
4991 | int i; |
4992 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4993 | { |
c3f6f71d JM |
4994 | /* Add the string if not present. */ |
4995 | if ((*addr_string)[i] == NULL) | |
4996 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4997 | } |
4998 | } | |
c3f6f71d | 4999 | } |
c906108c | 5000 | |
c906108c | 5001 | |
c3f6f71d JM |
5002 | /* Convert each SAL into a real PC. Verify that the PC can be |
5003 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5004 | |
b9362cc7 | 5005 | static void |
c3f6f71d JM |
5006 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5007 | char *address) | |
5008 | { | |
5009 | int i; | |
5010 | for (i = 0; i < sals->nelts; i++) | |
5011 | { | |
5012 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
5013 | |
5014 | /* It's possible for the PC to be nonzero, but still an illegal | |
5015 | value on some targets. | |
5016 | ||
5017 | For example, on HP-UX if you start gdb, and before running the | |
5018 | inferior you try to set a breakpoint on a shared library function | |
5019 | "foo" where the inferior doesn't call "foo" directly but does | |
5020 | pass its address to another function call, then we do find a | |
5021 | minimal symbol for the "foo", but it's address is invalid. | |
5022 | (Appears to be an index into a table that the loader sets up | |
5023 | when the inferior is run.) | |
5024 | ||
5025 | Give the target a chance to bless sals.sals[i].pc before we | |
5026 | try to make a breakpoint for it. */ | |
c3f6f71d | 5027 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 5028 | { |
c3f6f71d JM |
5029 | if (address == NULL) |
5030 | error ("Cannot break without a running program."); | |
5031 | else | |
5032 | error ("Cannot break on %s without a running program.", | |
5033 | address); | |
c5aa993b | 5034 | } |
c3f6f71d JM |
5035 | } |
5036 | } | |
5037 | ||
0101ce28 JJ |
5038 | static int |
5039 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) | |
5040 | { | |
5041 | struct captured_parse_breakpoint_args *args = data; | |
5042 | ||
5043 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5044 | args->not_found_ptr); | |
5045 | ||
5046 | return GDB_RC_OK; | |
5047 | } | |
5048 | ||
c3f6f71d JM |
5049 | /* Set a breakpoint according to ARG (function, linenum or *address) |
5050 | flag: first bit : 0 non-temporary, 1 temporary. | |
0101ce28 | 5051 | second bit : 0 normal breakpoint, 1 hardware breakpoint. |
c5aa993b | 5052 | |
0101ce28 JJ |
5053 | PENDING_BP is non-NULL when this function is being called to resolve |
5054 | a pending breakpoint. */ | |
5055 | ||
5056 | static int | |
5057 | break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp) | |
c3f6f71d JM |
5058 | { |
5059 | int tempflag, hardwareflag; | |
5060 | struct symtabs_and_lines sals; | |
52f0bd74 | 5061 | struct expression **cond = 0; |
0101ce28 | 5062 | struct symtab_and_line pending_sal; |
c3f6f71d | 5063 | char **cond_string = (char **) NULL; |
0101ce28 JJ |
5064 | char *copy_arg; |
5065 | char *err_msg; | |
c3f6f71d JM |
5066 | char *addr_start = arg; |
5067 | char **addr_string; | |
5068 | struct cleanup *old_chain; | |
5069 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 JJ |
5070 | struct captured_parse_breakpoint_args parse_args; |
5071 | int i, rc; | |
5072 | int pending = 0; | |
c3f6f71d JM |
5073 | int thread = -1; |
5074 | int ignore_count = 0; | |
0101ce28 | 5075 | int not_found = 0; |
c3f6f71d JM |
5076 | |
5077 | hardwareflag = flag & BP_HARDWAREFLAG; | |
5078 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 5079 | |
c3f6f71d JM |
5080 | sals.sals = NULL; |
5081 | sals.nelts = 0; | |
5082 | addr_string = NULL; | |
c3f6f71d | 5083 | |
0101ce28 JJ |
5084 | parse_args.arg_p = &arg; |
5085 | parse_args.sals_p = &sals; | |
5086 | parse_args.addr_string_p = &addr_string; | |
5087 | parse_args.not_found_ptr = ¬_found; | |
5088 | ||
5089 | rc = catch_exceptions_with_msg (uiout, do_captured_parse_breakpoint, | |
5090 | &parse_args, NULL, &err_msg, | |
5091 | RETURN_MASK_ALL); | |
5092 | ||
5093 | /* If caller is interested in rc value from parse, set value. */ | |
5094 | ||
5095 | if (rc != GDB_RC_OK) | |
5096 | { | |
5097 | /* Check for file or function not found. */ | |
5098 | if (not_found) | |
5099 | { | |
5100 | /* If called to resolve pending breakpoint, just return error code. */ | |
5101 | if (pending_bp) | |
5102 | return rc; | |
5103 | ||
5104 | error_output_message (NULL, err_msg); | |
5105 | xfree (err_msg); | |
5106 | if (!query ("Make breakpoint pending on future shared library load? ")) | |
5107 | return rc; | |
5108 | copy_arg = xstrdup (addr_start); | |
5109 | addr_string = ©_arg; | |
5110 | sals.nelts = 1; | |
5111 | sals.sals = &pending_sal; | |
5112 | pending_sal.pc = 0; | |
5113 | pending = 1; | |
5114 | } | |
5115 | else | |
5116 | return rc; | |
5117 | } | |
5118 | else if (!sals.nelts) | |
5119 | return GDB_RC_FAIL; | |
c3f6f71d JM |
5120 | |
5121 | /* Create a chain of things that always need to be cleaned up. */ | |
5122 | old_chain = make_cleanup (null_cleanup, 0); | |
5123 | ||
0101ce28 JJ |
5124 | if (!pending) |
5125 | { | |
5126 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5127 | make_cleanup (xfree, sals.sals); | |
5128 | ||
5129 | /* Cleanup the addr_string array but not its contents. */ | |
5130 | make_cleanup (xfree, addr_string); | |
5131 | } | |
c3f6f71d JM |
5132 | |
5133 | /* Allocate space for all the cond expressions. */ | |
5134 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5135 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5136 | |
5137 | /* Allocate space for all the cond strings. */ | |
5138 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5139 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5140 | |
5141 | /* ----------------------------- SNIP ----------------------------- | |
5142 | Anything added to the cleanup chain beyond this point is assumed | |
5143 | to be part of a breakpoint. If the breakpoint create succeeds | |
5144 | then the memory is not reclaimed. */ | |
5145 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5146 | ||
5147 | /* Mark the contents of the addr_string for cleanup. These go on | |
5148 | the breakpoint_chain and only occure if the breakpoint create | |
5149 | fails. */ | |
5150 | for (i = 0; i < sals.nelts; i++) | |
5151 | { | |
5152 | if (addr_string[i] != NULL) | |
b8c9b27d | 5153 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5154 | } |
5155 | ||
5156 | /* Resolve all line numbers to PC's and verify that the addresses | |
5157 | are ok for the target. */ | |
0101ce28 JJ |
5158 | if (!pending) |
5159 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5160 | |
5161 | /* Verify that condition can be parsed, before setting any | |
5162 | breakpoints. Allocate a separate condition expression for each | |
5163 | breakpoint. */ | |
5164 | thread = -1; /* No specific thread yet */ | |
0101ce28 | 5165 | if (!pending) |
c3f6f71d | 5166 | { |
0101ce28 | 5167 | for (i = 0; i < sals.nelts; i++) |
c906108c | 5168 | { |
0101ce28 JJ |
5169 | char *tok = arg; |
5170 | while (tok && *tok) | |
c906108c | 5171 | { |
0101ce28 JJ |
5172 | char *end_tok; |
5173 | int toklen; | |
5174 | char *cond_start = NULL; | |
5175 | char *cond_end = NULL; | |
5176 | while (*tok == ' ' || *tok == '\t') | |
5177 | tok++; | |
5178 | ||
5179 | end_tok = tok; | |
5180 | ||
5181 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5182 | end_tok++; | |
5183 | ||
5184 | toklen = end_tok - tok; | |
5185 | ||
5186 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5187 | { | |
5188 | tok = cond_start = end_tok + 1; | |
5189 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), | |
5190 | 0); | |
5191 | make_cleanup (xfree, cond[i]); | |
5192 | cond_end = tok; | |
5193 | cond_string[i] = savestring (cond_start, | |
5194 | cond_end - cond_start); | |
5195 | make_cleanup (xfree, cond_string[i]); | |
5196 | } | |
5197 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5198 | { | |
5199 | char *tmptok; | |
5200 | ||
5201 | tok = end_tok + 1; | |
5202 | tmptok = tok; | |
5203 | thread = strtol (tok, &tok, 0); | |
5204 | if (tok == tmptok) | |
5205 | error ("Junk after thread keyword."); | |
5206 | if (!valid_thread_id (thread)) | |
5207 | error ("Unknown thread %d\n", thread); | |
5208 | } | |
5209 | else | |
5210 | error ("Junk at end of arguments."); | |
c906108c | 5211 | } |
c906108c | 5212 | } |
0101ce28 JJ |
5213 | create_breakpoints (sals, addr_string, cond, cond_string, |
5214 | hardwareflag ? bp_hardware_breakpoint | |
5215 | : bp_breakpoint, | |
5216 | tempflag ? disp_del : disp_donttouch, | |
5217 | thread, ignore_count, from_tty, | |
5218 | pending_bp); | |
c906108c | 5219 | } |
0101ce28 JJ |
5220 | else |
5221 | { | |
5222 | struct symtab_and_line sal; | |
5223 | struct breakpoint *b; | |
5224 | ||
5225 | sal.symtab = NULL; | |
5226 | sal.pc = 0; | |
5227 | ||
5228 | make_cleanup (xfree, copy_arg); | |
5229 | ||
5230 | b = set_raw_breakpoint (sal, hardwareflag ? bp_hardware_breakpoint | |
5231 | : bp_breakpoint); | |
5232 | set_breakpoint_count (breakpoint_count + 1); | |
5233 | b->number = breakpoint_count; | |
5234 | b->cond = *cond; | |
5235 | b->thread = thread; | |
5236 | b->addr_string = *addr_string; | |
5237 | b->cond_string = *cond_string; | |
5238 | b->ignore_count = ignore_count; | |
5239 | b->pending = 1; | |
5240 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
5241 | b->from_tty = from_tty; | |
5242 | b->flag = flag; | |
5243 | mention (b); | |
5244 | } | |
5245 | ||
c3f6f71d JM |
5246 | if (sals.nelts > 1) |
5247 | { | |
5248 | warning ("Multiple breakpoints were set."); | |
5249 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5250 | } |
c3f6f71d JM |
5251 | /* That's it. Discard the cleanups for data inserted into the |
5252 | breakpoint. */ | |
5253 | discard_cleanups (breakpoint_chain); | |
5254 | /* But cleanup everything else. */ | |
5255 | do_cleanups (old_chain); | |
0101ce28 JJ |
5256 | |
5257 | return GDB_RC_OK; | |
c3f6f71d | 5258 | } |
c906108c | 5259 | |
c3f6f71d JM |
5260 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5261 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5262 | |
c3f6f71d JM |
5263 | struct captured_breakpoint_args |
5264 | { | |
5265 | char *address; | |
5266 | char *condition; | |
5267 | int hardwareflag; | |
5268 | int tempflag; | |
5269 | int thread; | |
5270 | int ignore_count; | |
5271 | }; | |
5272 | ||
5273 | static int | |
5274 | do_captured_breakpoint (void *data) | |
5275 | { | |
5276 | struct captured_breakpoint_args *args = data; | |
5277 | struct symtabs_and_lines sals; | |
52f0bd74 | 5278 | struct expression **cond; |
c3f6f71d JM |
5279 | struct cleanup *old_chain; |
5280 | struct cleanup *breakpoint_chain = NULL; | |
5281 | int i; | |
5282 | char **addr_string; | |
5283 | char **cond_string; | |
5284 | ||
5285 | char *address_end; | |
5286 | ||
5287 | /* Parse the source and lines spec. Delay check that the expression | |
5288 | didn't contain trailing garbage until after cleanups are in | |
5289 | place. */ | |
5290 | sals.sals = NULL; | |
5291 | sals.nelts = 0; | |
5292 | address_end = args->address; | |
5293 | addr_string = NULL; | |
0101ce28 | 5294 | parse_breakpoint_sals (&address_end, &sals, &addr_string, 0); |
c3f6f71d JM |
5295 | |
5296 | if (!sals.nelts) | |
5297 | return GDB_RC_NONE; | |
5298 | ||
5299 | /* Create a chain of things at always need to be cleaned up. */ | |
5300 | old_chain = make_cleanup (null_cleanup, 0); | |
5301 | ||
5302 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5303 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5304 | |
5305 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5306 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5307 | |
5308 | /* Allocate space for all the cond expressions. */ | |
5309 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5310 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5311 | |
5312 | /* Allocate space for all the cond strings. */ | |
5313 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5314 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5315 | |
5316 | /* ----------------------------- SNIP ----------------------------- | |
5317 | Anything added to the cleanup chain beyond this point is assumed | |
5318 | to be part of a breakpoint. If the breakpoint create goes | |
5319 | through then that memory is not cleaned up. */ | |
5320 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5321 | ||
5322 | /* Mark the contents of the addr_string for cleanup. These go on | |
5323 | the breakpoint_chain and only occure if the breakpoint create | |
5324 | fails. */ | |
c906108c SS |
5325 | for (i = 0; i < sals.nelts; i++) |
5326 | { | |
c3f6f71d | 5327 | if (addr_string[i] != NULL) |
b8c9b27d | 5328 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5329 | } |
5330 | ||
c3f6f71d JM |
5331 | /* Wait until now before checking for garbage at the end of the |
5332 | address. That way cleanups can take care of freeing any | |
5333 | memory. */ | |
5334 | if (*address_end != '\0') | |
5335 | error ("Garbage %s following breakpoint address", address_end); | |
5336 | ||
5337 | /* Resolve all line numbers to PC's. */ | |
5338 | breakpoint_sals_to_pc (&sals, args->address); | |
5339 | ||
5340 | /* Verify that conditions can be parsed, before setting any | |
5341 | breakpoints. */ | |
5342 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5343 | { |
c3f6f71d JM |
5344 | if (args->condition != NULL) |
5345 | { | |
5346 | char *tok = args->condition; | |
5347 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5348 | if (*tok != '\0') | |
5349 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 5350 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5351 | cond_string[i] = xstrdup (args->condition); |
5352 | } | |
c906108c | 5353 | } |
c3f6f71d JM |
5354 | |
5355 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5356 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5357 | args->tempflag ? disp_del : disp_donttouch, |
0101ce28 JJ |
5358 | args->thread, args->ignore_count, 0/*from-tty*/, |
5359 | NULL/*pending_bp*/); | |
c3f6f71d JM |
5360 | |
5361 | /* That's it. Discard the cleanups for data inserted into the | |
5362 | breakpoint. */ | |
5363 | discard_cleanups (breakpoint_chain); | |
5364 | /* But cleanup everything else. */ | |
c906108c | 5365 | do_cleanups (old_chain); |
c3f6f71d | 5366 | return GDB_RC_OK; |
c906108c SS |
5367 | } |
5368 | ||
c3f6f71d JM |
5369 | enum gdb_rc |
5370 | gdb_breakpoint (char *address, char *condition, | |
5371 | int hardwareflag, int tempflag, | |
5372 | int thread, int ignore_count) | |
5373 | { | |
5374 | struct captured_breakpoint_args args; | |
5375 | args.address = address; | |
5376 | args.condition = condition; | |
5377 | args.hardwareflag = hardwareflag; | |
5378 | args.tempflag = tempflag; | |
5379 | args.thread = thread; | |
5380 | args.ignore_count = ignore_count; | |
5381 | return catch_errors (do_captured_breakpoint, &args, | |
5382 | NULL, RETURN_MASK_ALL); | |
5383 | } | |
5384 | ||
5385 | ||
c906108c | 5386 | static void |
fba45db2 | 5387 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5388 | { |
5389 | struct frame_info *frame; | |
5390 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
5391 | char *extra_args = NULL; |
5392 | char *level_arg; | |
c906108c SS |
5393 | int extra_args_len = 0, if_arg = 0; |
5394 | ||
5395 | if (!arg || | |
5396 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5397 | { | |
5398 | ||
5399 | if (default_breakpoint_valid) | |
5400 | { | |
6e7f8b9c | 5401 | if (deprecated_selected_frame) |
c906108c | 5402 | { |
bdd78e62 | 5403 | selected_pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
5404 | if (arg) |
5405 | if_arg = 1; | |
5406 | } | |
5407 | else | |
5408 | error ("No selected frame."); | |
5409 | } | |
5410 | else | |
5411 | error ("No default breakpoint address now."); | |
5412 | } | |
5413 | else | |
5414 | { | |
5415 | extra_args = strchr (arg, ' '); | |
5416 | if (extra_args) | |
5417 | { | |
5418 | extra_args++; | |
5419 | extra_args_len = strlen (extra_args); | |
5420 | level_arg = (char *) xmalloc (extra_args - arg); | |
5421 | strncpy (level_arg, arg, extra_args - arg - 1); | |
5422 | level_arg[extra_args - arg - 1] = '\0'; | |
5423 | } | |
5424 | else | |
5425 | { | |
5426 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
5427 | strcpy (level_arg, arg); | |
5428 | } | |
5429 | ||
5430 | frame = parse_frame_specification (level_arg); | |
5431 | if (frame) | |
bdd78e62 | 5432 | selected_pc = get_frame_pc (frame); |
c906108c SS |
5433 | else |
5434 | selected_pc = 0; | |
5435 | } | |
5436 | if (if_arg) | |
5437 | { | |
5438 | extra_args = arg; | |
c5aa993b | 5439 | extra_args_len = strlen (arg); |
c906108c SS |
5440 | } |
5441 | ||
5442 | if (selected_pc) | |
5443 | { | |
c5aa993b | 5444 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c | 5445 | { |
9ebf4acf | 5446 | char *addr_string; |
c906108c | 5447 | if (extra_args_len) |
9ebf4acf | 5448 | addr_string = xstrprintf ("*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5449 | else |
9ebf4acf | 5450 | addr_string = xstrprintf ("*0x%s", paddr_nz (high)); |
0101ce28 | 5451 | break_command_1 (addr_string, flag, from_tty, NULL); |
b8c9b27d | 5452 | xfree (addr_string); |
c906108c SS |
5453 | } |
5454 | else | |
5455 | error ("No function contains the specified address"); | |
5456 | } | |
5457 | else | |
5458 | error ("Unable to set breakpoint at procedure exit"); | |
5459 | } | |
5460 | ||
5461 | ||
5462 | static void | |
fba45db2 | 5463 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5464 | { |
5465 | char *addr_string, *break_string, *beg_addr_string; | |
5466 | CORE_ADDR low, high; | |
5467 | struct symtabs_and_lines sals; | |
5468 | struct symtab_and_line sal; | |
5469 | struct cleanup *old_chain; | |
7f7e9482 | 5470 | char *extra_args = NULL; |
c906108c SS |
5471 | int extra_args_len = 0; |
5472 | int i, if_arg = 0; | |
5473 | ||
5474 | if (!arg || | |
5475 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5476 | { | |
5477 | if (default_breakpoint_valid) | |
5478 | { | |
6e7f8b9c | 5479 | if (deprecated_selected_frame) |
c906108c | 5480 | { |
9ebf4acf AC |
5481 | addr_string = xstrprintf ("*0x%s", |
5482 | paddr_nz (get_frame_pc (deprecated_selected_frame))); | |
c906108c SS |
5483 | if (arg) |
5484 | if_arg = 1; | |
5485 | } | |
5486 | else | |
5487 | error ("No selected frame."); | |
5488 | } | |
5489 | else | |
5490 | error ("No default breakpoint address now."); | |
5491 | } | |
5492 | else | |
5493 | { | |
5494 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5495 | strcpy (addr_string, arg); | |
5496 | } | |
5497 | ||
5498 | if (if_arg) | |
5499 | { | |
5500 | extra_args = arg; | |
c5aa993b JM |
5501 | extra_args_len = strlen (arg); |
5502 | } | |
5503 | else if (arg) | |
5504 | { | |
5505 | /* get the stuff after the function name or address */ | |
5506 | extra_args = strchr (arg, ' '); | |
5507 | if (extra_args) | |
5508 | { | |
5509 | extra_args++; | |
5510 | extra_args_len = strlen (extra_args); | |
5511 | } | |
c906108c | 5512 | } |
c906108c SS |
5513 | |
5514 | sals.sals = NULL; | |
5515 | sals.nelts = 0; | |
5516 | ||
c5aa993b JM |
5517 | beg_addr_string = addr_string; |
5518 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
68219205 | 5519 | (char ***) NULL, NULL); |
c906108c | 5520 | |
b8c9b27d KB |
5521 | xfree (beg_addr_string); |
5522 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
5523 | for (i = 0; (i < sals.nelts); i++) |
5524 | { | |
5525 | sal = sals.sals[i]; | |
c5aa993b | 5526 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c | 5527 | { |
9ebf4acf | 5528 | break_string; |
c906108c | 5529 | if (extra_args_len) |
9ebf4acf AC |
5530 | break_string = xstrprintf ("*0x%s %s", paddr_nz (high), |
5531 | extra_args); | |
c906108c | 5532 | else |
9ebf4acf | 5533 | break_string = xstrprintf ("*0x%s", paddr_nz (high)); |
0101ce28 | 5534 | break_command_1 (break_string, flag, from_tty, NULL); |
b8c9b27d | 5535 | xfree (break_string); |
c906108c SS |
5536 | } |
5537 | else | |
5538 | error ("No function contains the specified address"); | |
5539 | } | |
5540 | if (sals.nelts > 1) | |
5541 | { | |
53a5351d JM |
5542 | warning ("Multiple breakpoints were set.\n"); |
5543 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5544 | } |
c5aa993b | 5545 | do_cleanups (old_chain); |
c906108c SS |
5546 | } |
5547 | ||
5548 | ||
5549 | /* Helper function for break_command_1 and disassemble_command. */ | |
5550 | ||
5551 | void | |
fba45db2 | 5552 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5553 | { |
5554 | CORE_ADDR pc; | |
5555 | ||
5556 | if (sal->pc == 0 && sal->symtab != NULL) | |
5557 | { | |
5558 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5559 | error ("No line %d in file \"%s\".", | |
5560 | sal->line, sal->symtab->filename); | |
5561 | sal->pc = pc; | |
5562 | } | |
5563 | ||
5564 | if (sal->section == 0 && sal->symtab != NULL) | |
5565 | { | |
5566 | struct blockvector *bv; | |
c5aa993b JM |
5567 | struct block *b; |
5568 | struct symbol *sym; | |
5569 | int index; | |
c906108c | 5570 | |
c5aa993b | 5571 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5572 | if (bv != NULL) |
5573 | { | |
c5aa993b | 5574 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5575 | sym = block_function (b); |
5576 | if (sym != NULL) | |
5577 | { | |
5578 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5579 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5580 | } | |
5581 | else | |
5582 | { | |
5583 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5584 | have to look harder. This case can be executed if we have |
5585 | line numbers but no functions (as can happen in assembly | |
5586 | source). */ | |
c906108c | 5587 | |
c5aa993b | 5588 | struct minimal_symbol *msym; |
c906108c SS |
5589 | |
5590 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5591 | if (msym) | |
5592 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5593 | } | |
5594 | } | |
5595 | } | |
5596 | } | |
5597 | ||
5598 | void | |
fba45db2 | 5599 | break_command (char *arg, int from_tty) |
c906108c | 5600 | { |
0101ce28 | 5601 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5602 | } |
5603 | ||
502fd408 | 5604 | void |
fba45db2 | 5605 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5606 | { |
5607 | break_at_finish_command_1 (arg, 0, from_tty); | |
5608 | } | |
5609 | ||
502fd408 | 5610 | void |
fba45db2 | 5611 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5612 | { |
5613 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5614 | } | |
5615 | ||
5616 | void | |
fba45db2 | 5617 | tbreak_command (char *arg, int from_tty) |
c906108c | 5618 | { |
0101ce28 | 5619 | break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL); |
c906108c SS |
5620 | } |
5621 | ||
502fd408 | 5622 | void |
fba45db2 | 5623 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5624 | { |
5625 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5626 | } | |
5627 | ||
5628 | static void | |
fba45db2 | 5629 | hbreak_command (char *arg, int from_tty) |
c906108c | 5630 | { |
0101ce28 | 5631 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty, NULL); |
c906108c SS |
5632 | } |
5633 | ||
5634 | static void | |
fba45db2 | 5635 | thbreak_command (char *arg, int from_tty) |
c906108c | 5636 | { |
0101ce28 | 5637 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty, NULL); |
c906108c SS |
5638 | } |
5639 | ||
5640 | static void | |
fba45db2 | 5641 | stop_command (char *arg, int from_tty) |
c906108c SS |
5642 | { |
5643 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5644 | Usage: stop in <function | address>\n\ | |
5645 | stop at <line>\n"); | |
5646 | } | |
5647 | ||
5648 | static void | |
fba45db2 | 5649 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5650 | { |
5651 | int badInput = 0; | |
5652 | ||
c5aa993b | 5653 | if (arg == (char *) NULL) |
c906108c SS |
5654 | badInput = 1; |
5655 | else if (*arg != '*') | |
5656 | { | |
5657 | char *argptr = arg; | |
5658 | int hasColon = 0; | |
5659 | ||
53a5351d JM |
5660 | /* look for a ':'. If this is a line number specification, then |
5661 | say it is bad, otherwise, it should be an address or | |
5662 | function/method name */ | |
c906108c | 5663 | while (*argptr && !hasColon) |
c5aa993b JM |
5664 | { |
5665 | hasColon = (*argptr == ':'); | |
5666 | argptr++; | |
5667 | } | |
c906108c SS |
5668 | |
5669 | if (hasColon) | |
c5aa993b | 5670 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5671 | else |
c5aa993b | 5672 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5673 | } |
5674 | ||
5675 | if (badInput) | |
c5aa993b | 5676 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c | 5677 | else |
0101ce28 | 5678 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5679 | } |
5680 | ||
5681 | static void | |
fba45db2 | 5682 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5683 | { |
5684 | int badInput = 0; | |
5685 | ||
c5aa993b | 5686 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5687 | badInput = 1; |
5688 | else | |
5689 | { | |
5690 | char *argptr = arg; | |
5691 | int hasColon = 0; | |
5692 | ||
5693 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5694 | it is probably a line number. */ |
c906108c | 5695 | while (*argptr && !hasColon) |
c5aa993b JM |
5696 | { |
5697 | hasColon = (*argptr == ':'); | |
5698 | argptr++; | |
5699 | } | |
c906108c SS |
5700 | |
5701 | if (hasColon) | |
c5aa993b | 5702 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5703 | else |
c5aa993b | 5704 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5705 | } |
5706 | ||
5707 | if (badInput) | |
c5aa993b | 5708 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c | 5709 | else |
0101ce28 | 5710 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5711 | } |
5712 | ||
53a5351d JM |
5713 | /* accessflag: hw_write: watch write, |
5714 | hw_read: watch read, | |
5715 | hw_access: watch access (read or write) */ | |
c906108c | 5716 | static void |
fba45db2 | 5717 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5718 | { |
5719 | struct breakpoint *b; | |
5720 | struct symtab_and_line sal; | |
5721 | struct expression *exp; | |
5722 | struct block *exp_valid_block; | |
5723 | struct value *val, *mark; | |
5724 | struct frame_info *frame; | |
5725 | struct frame_info *prev_frame = NULL; | |
5726 | char *exp_start = NULL; | |
5727 | char *exp_end = NULL; | |
5728 | char *tok, *end_tok; | |
5729 | int toklen; | |
5730 | char *cond_start = NULL; | |
5731 | char *cond_end = NULL; | |
5732 | struct expression *cond = NULL; | |
5733 | int i, other_type_used, target_resources_ok = 0; | |
5734 | enum bptype bp_type; | |
5735 | int mem_cnt = 0; | |
5736 | ||
fe39c653 | 5737 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5738 | |
c906108c SS |
5739 | /* Parse arguments. */ |
5740 | innermost_block = NULL; | |
5741 | exp_start = arg; | |
5742 | exp = parse_exp_1 (&arg, 0, 0); | |
5743 | exp_end = arg; | |
5744 | exp_valid_block = innermost_block; | |
5745 | mark = value_mark (); | |
5746 | val = evaluate_expression (exp); | |
5747 | release_value (val); | |
5748 | if (VALUE_LAZY (val)) | |
5749 | value_fetch_lazy (val); | |
5750 | ||
5751 | tok = arg; | |
5752 | while (*tok == ' ' || *tok == '\t') | |
5753 | tok++; | |
5754 | end_tok = tok; | |
5755 | ||
5756 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5757 | end_tok++; | |
5758 | ||
5759 | toklen = end_tok - tok; | |
5760 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5761 | { | |
5762 | tok = cond_start = end_tok + 1; | |
5763 | cond = parse_exp_1 (&tok, 0, 0); | |
5764 | cond_end = tok; | |
5765 | } | |
5766 | if (*tok) | |
c5aa993b | 5767 | error ("Junk at end of command."); |
c906108c | 5768 | |
53a5351d | 5769 | if (accessflag == hw_read) |
c5aa993b | 5770 | bp_type = bp_read_watchpoint; |
53a5351d | 5771 | else if (accessflag == hw_access) |
c5aa993b JM |
5772 | bp_type = bp_access_watchpoint; |
5773 | else | |
5774 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5775 | |
5776 | mem_cnt = can_use_hardware_watchpoint (val); | |
5777 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5778 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5779 | if (mem_cnt != 0) |
5780 | { | |
5781 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5782 | target_resources_ok = |
5783 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5784 | other_type_used); | |
c5aa993b | 5785 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5786 | error ("Target does not support this type of hardware watchpoint."); |
5787 | ||
c5aa993b | 5788 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5789 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5790 | } |
c906108c SS |
5791 | |
5792 | #if defined(HPUXHPPA) | |
c5aa993b | 5793 | /* On HP-UX if you set a h/w |
c906108c SS |
5794 | watchpoint before the "run" command, the inferior dies with a e.g., |
5795 | SIGILL once you start it. I initially believed this was due to a | |
5796 | bad interaction between page protection traps and the initial | |
5797 | startup sequence by the dynamic linker. | |
5798 | ||
5799 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5800 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5801 | yet, which forced slow watches before a "run" or "attach", and it |
5802 | still fails somewhere in the startup code. | |
5803 | ||
5804 | Until I figure out what's happening, I'm disallowing watches altogether | |
5805 | before the "run" or "attach" command. We'll tell the user they must | |
5806 | set watches after getting the program started. */ | |
c5aa993b | 5807 | if (!target_has_execution) |
c906108c SS |
5808 | { |
5809 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5810 | return; | |
5811 | } | |
5812 | #endif /* HPUXHPPA */ | |
c5aa993b | 5813 | |
4d28f7a8 KB |
5814 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5815 | watchpoint could not be set. */ | |
5816 | if (!mem_cnt || target_resources_ok <= 0) | |
5817 | bp_type = bp_watchpoint; | |
5818 | ||
c906108c | 5819 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5820 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5821 | set_breakpoint_count (breakpoint_count + 1); |
5822 | b->number = breakpoint_count; | |
b5de0fa7 | 5823 | b->disposition = disp_donttouch; |
c906108c SS |
5824 | b->exp = exp; |
5825 | b->exp_valid_block = exp_valid_block; | |
5826 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5827 | b->val = val; | |
5828 | b->cond = cond; | |
5829 | if (cond_start) | |
5830 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5831 | else | |
5832 | b->cond_string = 0; | |
c5aa993b | 5833 | |
c906108c SS |
5834 | frame = block_innermost_frame (exp_valid_block); |
5835 | if (frame) | |
5836 | { | |
5837 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5838 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5839 | } |
5840 | else | |
101dcfbe AC |
5841 | { |
5842 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5843 | } | |
c906108c | 5844 | |
c906108c SS |
5845 | /* If the expression is "local", then set up a "watchpoint scope" |
5846 | breakpoint at the point where we've left the scope of the watchpoint | |
5847 | expression. */ | |
5848 | if (innermost_block) | |
5849 | { | |
5850 | if (prev_frame) | |
5851 | { | |
5852 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5853 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5854 | bp_watchpoint_scope); | |
c906108c | 5855 | |
b5de0fa7 | 5856 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5857 | |
5858 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5859 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5860 | |
5861 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5862 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5863 | |
5864 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5865 | scope_breakpoint->loc->requested_address |
5866 | = get_frame_pc (prev_frame); | |
5867 | scope_breakpoint->loc->address | |
5868 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address); | |
c906108c SS |
5869 | |
5870 | /* The scope breakpoint is related to the watchpoint. We | |
5871 | will need to act on them together. */ | |
5872 | b->related_breakpoint = scope_breakpoint; | |
5873 | } | |
5874 | } | |
5875 | value_free_to_mark (mark); | |
5876 | mention (b); | |
5877 | } | |
5878 | ||
5879 | /* Return count of locations need to be watched and can be handled | |
5880 | in hardware. If the watchpoint can not be handled | |
5881 | in hardware return zero. */ | |
5882 | ||
5883 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d | 5884 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
b1e29e33 | 5885 | ((BYTE_SIZE) <= (DEPRECATED_REGISTER_SIZE)) |
53a5351d JM |
5886 | #endif |
5887 | ||
5888 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5889 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5890 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5891 | #endif |
5892 | ||
5893 | static int | |
fba45db2 | 5894 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5895 | { |
5896 | int found_memory_cnt = 0; | |
2e70b7b9 | 5897 | struct value *head = v; |
c906108c SS |
5898 | |
5899 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5900 | if (!can_use_hw_watchpoints) |
c906108c | 5901 | return 0; |
c5aa993b | 5902 | |
5c44784c JM |
5903 | /* Make sure that the value of the expression depends only upon |
5904 | memory contents, and values computed from them within GDB. If we | |
5905 | find any register references or function calls, we can't use a | |
5906 | hardware watchpoint. | |
5907 | ||
5908 | The idea here is that evaluating an expression generates a series | |
5909 | of values, one holding the value of every subexpression. (The | |
5910 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5911 | a*b+c.) GDB's values hold almost enough information to establish | |
5912 | the criteria given above --- they identify memory lvalues, | |
5913 | register lvalues, computed values, etcetera. So we can evaluate | |
5914 | the expression, and then scan the chain of values that leaves | |
5915 | behind to decide whether we can detect any possible change to the | |
5916 | expression's final value using only hardware watchpoints. | |
5917 | ||
5918 | However, I don't think that the values returned by inferior | |
5919 | function calls are special in any way. So this function may not | |
5920 | notice that an expression involving an inferior function call | |
5921 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5922 | for (; v; v = v->next) |
c906108c | 5923 | { |
5c44784c | 5924 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5925 | { |
5c44784c JM |
5926 | if (VALUE_LAZY (v)) |
5927 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5928 | we either just used its address (e.g., `a' in `a.b') or | |
5929 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5930 | ; | |
53a5351d | 5931 | else |
5c44784c JM |
5932 | { |
5933 | /* Ahh, memory we actually used! Check if we can cover | |
5934 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5935 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5936 | ||
5937 | /* We only watch structs and arrays if user asked for it | |
5938 | explicitly, never if they just happen to appear in a | |
5939 | middle of some value chain. */ | |
5940 | if (v == head | |
5941 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5942 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5943 | { | |
5944 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5945 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5946 | ||
5947 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5948 | return 0; | |
5949 | else | |
5950 | found_memory_cnt++; | |
5951 | } | |
5c44784c | 5952 | } |
c5aa993b | 5953 | } |
c906108c | 5954 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5955 | return 0; /* ??? What does this represent? */ |
5956 | else if (v->lval == lval_register) | |
5957 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5958 | } |
5959 | ||
5960 | /* The expression itself looks suitable for using a hardware | |
5961 | watchpoint, but give the target machine a chance to reject it. */ | |
5962 | return found_memory_cnt; | |
5963 | } | |
5964 | ||
8b93c638 | 5965 | void |
fba45db2 | 5966 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5967 | { |
5968 | watch_command (arg, from_tty); | |
5969 | } | |
8926118c | 5970 | |
c5aa993b | 5971 | static void |
fba45db2 | 5972 | watch_command (char *arg, int from_tty) |
c906108c | 5973 | { |
53a5351d | 5974 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5975 | } |
5976 | ||
8b93c638 | 5977 | void |
fba45db2 | 5978 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5979 | { |
5980 | rwatch_command (arg, from_tty); | |
5981 | } | |
8926118c | 5982 | |
c5aa993b | 5983 | static void |
fba45db2 | 5984 | rwatch_command (char *arg, int from_tty) |
c906108c | 5985 | { |
53a5351d | 5986 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5987 | } |
5988 | ||
8b93c638 | 5989 | void |
fba45db2 | 5990 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5991 | { |
5992 | awatch_command (arg, from_tty); | |
5993 | } | |
8926118c | 5994 | |
c5aa993b | 5995 | static void |
fba45db2 | 5996 | awatch_command (char *arg, int from_tty) |
c906108c | 5997 | { |
53a5351d | 5998 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5999 | } |
c906108c | 6000 | \f |
c5aa993b | 6001 | |
43ff13b4 | 6002 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6003 | because it uses the mechanisms of breakpoints. */ |
6004 | ||
43ff13b4 JM |
6005 | /* This function is called by fetch_inferior_event via the |
6006 | cmd_continuation pointer, to complete the until command. It takes | |
6007 | care of cleaning up the temporary breakpoints set up by the until | |
6008 | command. */ | |
c2c6d25f JM |
6009 | static void |
6010 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 6011 | { |
0d06e24b JM |
6012 | struct cleanup *cleanups; |
6013 | ||
57e687d9 | 6014 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 6015 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
6016 | } |
6017 | ||
c906108c | 6018 | void |
ae66c1fc | 6019 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6020 | { |
6021 | struct symtabs_and_lines sals; | |
6022 | struct symtab_and_line sal; | |
6e7f8b9c | 6023 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
6024 | struct breakpoint *breakpoint; |
6025 | struct cleanup *old_chain; | |
0d06e24b JM |
6026 | struct continuation_arg *arg1; |
6027 | ||
c906108c SS |
6028 | |
6029 | clear_proceed_status (); | |
6030 | ||
6031 | /* Set a breakpoint where the user wants it and at return from | |
6032 | this function */ | |
c5aa993b | 6033 | |
c906108c SS |
6034 | if (default_breakpoint_valid) |
6035 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6036 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6037 | else |
53a5351d | 6038 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6039 | 0, (char ***) NULL, NULL); |
c5aa993b | 6040 | |
c906108c SS |
6041 | if (sals.nelts != 1) |
6042 | error ("Couldn't get information on specified line."); | |
c5aa993b | 6043 | |
c906108c | 6044 | sal = sals.sals[0]; |
b8c9b27d | 6045 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6046 | |
c906108c SS |
6047 | if (*arg) |
6048 | error ("Junk at end of arguments."); | |
c5aa993b | 6049 | |
c906108c | 6050 | resolve_sal_pc (&sal); |
c5aa993b | 6051 | |
ae66c1fc EZ |
6052 | if (anywhere) |
6053 | /* If the user told us to continue until a specified location, | |
6054 | we don't specify a frame at which we need to stop. */ | |
6055 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6056 | else | |
6057 | /* Otherwise, specify the current frame, because we want to stop only | |
6058 | at the very same frame. */ | |
6059 | breakpoint = set_momentary_breakpoint (sal, | |
6060 | get_frame_id (deprecated_selected_frame), | |
6061 | bp_until); | |
c5aa993b | 6062 | |
6426a772 | 6063 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 6064 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6065 | else |
4d6140d9 | 6066 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
6067 | |
6068 | /* If we are running asynchronously, and the target supports async | |
6069 | execution, we are not waiting for the target to stop, in the call | |
6070 | tp proceed, below. This means that we cannot delete the | |
6071 | brekpoints until the target has actually stopped. The only place | |
6072 | where we get a chance to do that is in fetch_inferior_event, so | |
6073 | we must set things up for that. */ | |
6074 | ||
6426a772 | 6075 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 6076 | { |
0d06e24b JM |
6077 | /* In this case the arg for the continuation is just the point |
6078 | in the exec_cleanups chain from where to start doing | |
6079 | cleanups, because all the continuation does is the cleanups in | |
6080 | the exec_cleanup_chain. */ | |
6081 | arg1 = | |
6082 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
6083 | arg1->next = NULL; |
6084 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
6085 | |
6086 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 6087 | } |
c906108c | 6088 | |
ae66c1fc EZ |
6089 | /* Keep within the current frame, or in frames called by the current |
6090 | one. */ | |
c906108c SS |
6091 | if (prev_frame) |
6092 | { | |
30f7db39 AC |
6093 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6094 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
6095 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6096 | bp_until); | |
6426a772 | 6097 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 6098 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6099 | else |
4d6140d9 | 6100 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6101 | } |
c5aa993b | 6102 | |
c906108c | 6103 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
6104 | /* Do the cleanups now, anly if we are not running asynchronously, |
6105 | of if we are, but the target is still synchronous. */ | |
6426a772 | 6106 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 6107 | do_cleanups (old_chain); |
c906108c | 6108 | } |
ae66c1fc | 6109 | |
c906108c | 6110 | static void |
fba45db2 | 6111 | ep_skip_leading_whitespace (char **s) |
c906108c | 6112 | { |
c5aa993b JM |
6113 | if ((s == NULL) || (*s == NULL)) |
6114 | return; | |
6115 | while (isspace (**s)) | |
6116 | *s += 1; | |
c906108c | 6117 | } |
c5aa993b | 6118 | |
c906108c SS |
6119 | /* This function examines a string, and attempts to find a token |
6120 | that might be an event name in the leading characters. If a | |
6121 | possible match is found, a pointer to the last character of | |
6122 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6123 | |
c906108c | 6124 | static char * |
fba45db2 | 6125 | ep_find_event_name_end (char *arg) |
c906108c | 6126 | { |
c5aa993b JM |
6127 | char *s = arg; |
6128 | char *event_name_end = NULL; | |
6129 | ||
c906108c SS |
6130 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6131 | if (arg == NULL) | |
6132 | return NULL; | |
c5aa993b | 6133 | |
c906108c | 6134 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6135 | Basically, we're looking for alphanumerics and underscores; |
6136 | anything else delimites the token. */ | |
c906108c SS |
6137 | while (*s != '\0') |
6138 | { | |
c5aa993b JM |
6139 | if (!isalnum (*s) && (*s != '_')) |
6140 | break; | |
c906108c SS |
6141 | event_name_end = s; |
6142 | s++; | |
6143 | } | |
c5aa993b | 6144 | |
c906108c SS |
6145 | return event_name_end; |
6146 | } | |
6147 | ||
c5aa993b | 6148 | |
c906108c SS |
6149 | /* This function attempts to parse an optional "if <cond>" clause |
6150 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6151 | |
c906108c SS |
6152 | Else, it returns a pointer to the condition string. (It does not |
6153 | attempt to evaluate the string against a particular block.) And, | |
6154 | it updates arg to point to the first character following the parsed | |
6155 | if clause in the arg string. */ | |
53a5351d | 6156 | |
c906108c | 6157 | static char * |
fba45db2 | 6158 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6159 | { |
c5aa993b JM |
6160 | char *cond_string; |
6161 | ||
6162 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6163 | return NULL; |
c5aa993b | 6164 | |
c906108c SS |
6165 | /* Skip the "if" keyword. */ |
6166 | (*arg) += 2; | |
c5aa993b | 6167 | |
c906108c SS |
6168 | /* Skip any extra leading whitespace, and record the start of the |
6169 | condition string. */ | |
6170 | ep_skip_leading_whitespace (arg); | |
6171 | cond_string = *arg; | |
c5aa993b | 6172 | |
c906108c SS |
6173 | /* Assume that the condition occupies the remainder of the arg string. */ |
6174 | (*arg) += strlen (cond_string); | |
c5aa993b | 6175 | |
c906108c SS |
6176 | return cond_string; |
6177 | } | |
c5aa993b | 6178 | |
c906108c SS |
6179 | /* This function attempts to parse an optional filename from the arg |
6180 | string. If one is not found, it returns NULL. | |
c5aa993b | 6181 | |
c906108c SS |
6182 | Else, it returns a pointer to the parsed filename. (This function |
6183 | makes no attempt to verify that a file of that name exists, or is | |
6184 | accessible.) And, it updates arg to point to the first character | |
6185 | following the parsed filename in the arg string. | |
c5aa993b | 6186 | |
c906108c SS |
6187 | Note that clients needing to preserve the returned filename for |
6188 | future access should copy it to their own buffers. */ | |
6189 | static char * | |
fba45db2 | 6190 | ep_parse_optional_filename (char **arg) |
c906108c | 6191 | { |
c5aa993b JM |
6192 | static char filename[1024]; |
6193 | char *arg_p = *arg; | |
6194 | int i; | |
6195 | char c; | |
6196 | ||
c906108c SS |
6197 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6198 | return NULL; | |
c5aa993b JM |
6199 | |
6200 | for (i = 0;; i++) | |
c906108c SS |
6201 | { |
6202 | c = *arg_p; | |
6203 | if (isspace (c)) | |
c5aa993b | 6204 | c = '\0'; |
c906108c SS |
6205 | filename[i] = c; |
6206 | if (c == '\0') | |
c5aa993b | 6207 | break; |
c906108c SS |
6208 | arg_p++; |
6209 | } | |
6210 | *arg = arg_p; | |
c5aa993b | 6211 | |
c906108c SS |
6212 | return filename; |
6213 | } | |
c5aa993b | 6214 | |
c906108c SS |
6215 | /* Commands to deal with catching events, such as signals, exceptions, |
6216 | process start/exit, etc. */ | |
c5aa993b JM |
6217 | |
6218 | typedef enum | |
6219 | { | |
6220 | catch_fork, catch_vfork | |
6221 | } | |
6222 | catch_fork_kind; | |
6223 | ||
c906108c | 6224 | static void |
fba45db2 KB |
6225 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6226 | int from_tty) | |
c906108c | 6227 | { |
c5aa993b JM |
6228 | char *cond_string = NULL; |
6229 | ||
c906108c | 6230 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6231 | |
c906108c | 6232 | /* The allowed syntax is: |
c5aa993b JM |
6233 | catch [v]fork |
6234 | catch [v]fork if <cond> | |
6235 | ||
c906108c SS |
6236 | First, check if there's an if clause. */ |
6237 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6238 | |
c906108c SS |
6239 | if ((*arg != '\0') && !isspace (*arg)) |
6240 | error ("Junk at end of arguments."); | |
c5aa993b | 6241 | |
c906108c SS |
6242 | /* If this target supports it, create a fork or vfork catchpoint |
6243 | and enable reporting of such events. */ | |
c5aa993b JM |
6244 | switch (fork_kind) |
6245 | { | |
6246 | case catch_fork: | |
c906108c SS |
6247 | create_fork_event_catchpoint (tempflag, cond_string); |
6248 | break; | |
c5aa993b | 6249 | case catch_vfork: |
c906108c SS |
6250 | create_vfork_event_catchpoint (tempflag, cond_string); |
6251 | break; | |
c5aa993b | 6252 | default: |
c906108c SS |
6253 | error ("unsupported or unknown fork kind; cannot catch it"); |
6254 | break; | |
c5aa993b | 6255 | } |
c906108c SS |
6256 | } |
6257 | ||
6258 | static void | |
fba45db2 | 6259 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6260 | { |
c5aa993b | 6261 | char *cond_string = NULL; |
c906108c SS |
6262 | |
6263 | ep_skip_leading_whitespace (&arg); | |
6264 | ||
6265 | /* The allowed syntax is: | |
c5aa993b JM |
6266 | catch exec |
6267 | catch exec if <cond> | |
c906108c SS |
6268 | |
6269 | First, check if there's an if clause. */ | |
6270 | cond_string = ep_parse_optional_if_clause (&arg); | |
6271 | ||
6272 | if ((*arg != '\0') && !isspace (*arg)) | |
6273 | error ("Junk at end of arguments."); | |
6274 | ||
6275 | /* If this target supports it, create an exec catchpoint | |
6276 | and enable reporting of such events. */ | |
6277 | create_exec_event_catchpoint (tempflag, cond_string); | |
6278 | } | |
c5aa993b | 6279 | |
c906108c | 6280 | static void |
fba45db2 | 6281 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6282 | { |
c5aa993b JM |
6283 | char *dll_pathname = NULL; |
6284 | char *cond_string = NULL; | |
6285 | ||
c906108c | 6286 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6287 | |
c906108c | 6288 | /* The allowed syntax is: |
c5aa993b JM |
6289 | catch load |
6290 | catch load if <cond> | |
6291 | catch load <filename> | |
6292 | catch load <filename> if <cond> | |
6293 | ||
c906108c SS |
6294 | The user is not allowed to specify the <filename> after an |
6295 | if clause. | |
c5aa993b | 6296 | |
c906108c | 6297 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6298 | |
c906108c SS |
6299 | First, check if there's an if clause. If so, then there |
6300 | cannot be a filename. */ | |
6301 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6302 | |
c906108c SS |
6303 | /* If there was an if clause, then there cannot be a filename. |
6304 | Else, there might be a filename and an if clause. */ | |
6305 | if (cond_string == NULL) | |
6306 | { | |
6307 | dll_pathname = ep_parse_optional_filename (&arg); | |
6308 | ep_skip_leading_whitespace (&arg); | |
6309 | cond_string = ep_parse_optional_if_clause (&arg); | |
6310 | } | |
c5aa993b | 6311 | |
c906108c SS |
6312 | if ((*arg != '\0') && !isspace (*arg)) |
6313 | error ("Junk at end of arguments."); | |
c5aa993b | 6314 | |
c906108c SS |
6315 | /* Create a load breakpoint that only triggers when a load of |
6316 | the specified dll (or any dll, if no pathname was specified) | |
6317 | occurs. */ | |
39f77062 | 6318 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6319 | dll_pathname, cond_string); |
c906108c | 6320 | } |
c5aa993b | 6321 | |
c906108c | 6322 | static void |
fba45db2 | 6323 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6324 | { |
c5aa993b JM |
6325 | char *dll_pathname = NULL; |
6326 | char *cond_string = NULL; | |
6327 | ||
c906108c | 6328 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6329 | |
c906108c | 6330 | /* The allowed syntax is: |
c5aa993b JM |
6331 | catch unload |
6332 | catch unload if <cond> | |
6333 | catch unload <filename> | |
6334 | catch unload <filename> if <cond> | |
6335 | ||
c906108c SS |
6336 | The user is not allowed to specify the <filename> after an |
6337 | if clause. | |
c5aa993b | 6338 | |
c906108c | 6339 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6340 | |
c906108c SS |
6341 | First, check if there's an if clause. If so, then there |
6342 | cannot be a filename. */ | |
6343 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6344 | |
c906108c SS |
6345 | /* If there was an if clause, then there cannot be a filename. |
6346 | Else, there might be a filename and an if clause. */ | |
6347 | if (cond_string == NULL) | |
6348 | { | |
6349 | dll_pathname = ep_parse_optional_filename (&arg); | |
6350 | ep_skip_leading_whitespace (&arg); | |
6351 | cond_string = ep_parse_optional_if_clause (&arg); | |
6352 | } | |
c5aa993b | 6353 | |
c906108c SS |
6354 | if ((*arg != '\0') && !isspace (*arg)) |
6355 | error ("Junk at end of arguments."); | |
c5aa993b | 6356 | |
c906108c SS |
6357 | /* Create an unload breakpoint that only triggers when an unload of |
6358 | the specified dll (or any dll, if no pathname was specified) | |
6359 | occurs. */ | |
39f77062 | 6360 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6361 | dll_pathname, cond_string); |
c906108c | 6362 | } |
c906108c SS |
6363 | |
6364 | /* Commands to deal with catching exceptions. */ | |
6365 | ||
6366 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6367 | exception event callback */ |
c906108c SS |
6368 | |
6369 | static void | |
fba45db2 KB |
6370 | create_exception_catchpoint (int tempflag, char *cond_string, |
6371 | enum exception_event_kind ex_event, | |
6372 | struct symtab_and_line *sal) | |
c906108c | 6373 | { |
c5aa993b | 6374 | struct breakpoint *b; |
c5aa993b | 6375 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6376 | enum bptype bptype; |
c906108c | 6377 | |
c5aa993b | 6378 | if (!sal) /* no exception support? */ |
c906108c SS |
6379 | return; |
6380 | ||
c906108c SS |
6381 | switch (ex_event) |
6382 | { | |
c5aa993b | 6383 | case EX_EVENT_THROW: |
4d28f7a8 | 6384 | bptype = bp_catch_throw; |
c5aa993b JM |
6385 | break; |
6386 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6387 | bptype = bp_catch_catch; |
c5aa993b JM |
6388 | break; |
6389 | default: /* error condition */ | |
c5aa993b | 6390 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6391 | } |
4d28f7a8 KB |
6392 | |
6393 | b = set_raw_breakpoint (*sal, bptype); | |
6394 | set_breakpoint_count (breakpoint_count + 1); | |
6395 | b->number = breakpoint_count; | |
6396 | b->cond = NULL; | |
6397 | b->cond_string = (cond_string == NULL) ? | |
6398 | NULL : savestring (cond_string, strlen (cond_string)); | |
6399 | b->thread = thread; | |
6400 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6401 | b->enable_state = bp_enabled; |
6402 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6403 | mention (b); |
6404 | } | |
6405 | ||
3086aeae DJ |
6406 | static enum print_stop_action |
6407 | print_exception_catchpoint (struct breakpoint *b) | |
6408 | { | |
6409 | annotate_catchpoint (b->number); | |
6410 | ||
6411 | if (strstr (b->addr_string, "throw") != NULL) | |
6412 | printf_filtered ("\nCatchpoint %d (exception thrown)\n", | |
6413 | b->number); | |
6414 | else | |
6415 | printf_filtered ("\nCatchpoint %d (exception caught)\n", | |
6416 | b->number); | |
6417 | ||
6418 | return PRINT_SRC_AND_LOC; | |
6419 | } | |
6420 | ||
6421 | static void | |
6422 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6423 | { | |
6424 | if (addressprint) | |
6425 | { | |
6426 | annotate_field (4); | |
5cab636d | 6427 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6428 | } |
6429 | annotate_field (5); | |
5cab636d | 6430 | *last_addr = b->loc->address; |
3086aeae DJ |
6431 | if (strstr (b->addr_string, "throw") != NULL) |
6432 | ui_out_field_string (uiout, "what", "exception throw"); | |
6433 | else | |
6434 | ui_out_field_string (uiout, "what", "exception catch"); | |
6435 | } | |
6436 | ||
6437 | static void | |
6438 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6439 | { | |
6440 | if (strstr (b->addr_string, "throw") != NULL) | |
6441 | printf_filtered ("Catchpoint %d (throw)", b->number); | |
6442 | else | |
6443 | printf_filtered ("Catchpoint %d (catch)", b->number); | |
6444 | } | |
6445 | ||
6446 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6447 | print_exception_catchpoint, | |
6448 | print_one_exception_catchpoint, | |
6449 | print_mention_exception_catchpoint | |
6450 | }; | |
6451 | ||
6452 | static int | |
6453 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6454 | enum exception_event_kind ex_event, int from_tty) | |
6455 | { | |
6456 | char *trigger_func_name, *nameptr; | |
6457 | struct symtabs_and_lines sals; | |
6458 | struct breakpoint *b; | |
6459 | ||
6460 | if (ex_event == EX_EVENT_CATCH) | |
6461 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6462 | else | |
6463 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6464 | ||
6465 | nameptr = trigger_func_name; | |
68219205 | 6466 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6467 | if (sals.nelts == 0) |
6468 | { | |
b59661bd | 6469 | xfree (trigger_func_name); |
3086aeae DJ |
6470 | return 0; |
6471 | } | |
6472 | ||
6473 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6474 | set_breakpoint_count (breakpoint_count + 1); | |
6475 | b->number = breakpoint_count; | |
6476 | b->cond = NULL; | |
6477 | b->cond_string = (cond_string == NULL) ? | |
6478 | NULL : savestring (cond_string, strlen (cond_string)); | |
6479 | b->thread = -1; | |
6480 | b->addr_string = trigger_func_name; | |
6481 | b->enable_state = bp_enabled; | |
6482 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6483 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6484 | ||
b59661bd | 6485 | xfree (sals.sals); |
3086aeae DJ |
6486 | mention (b); |
6487 | return 1; | |
6488 | } | |
6489 | ||
c5aa993b | 6490 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6491 | |
6492 | static void | |
fba45db2 KB |
6493 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6494 | int tempflag, int from_tty) | |
c906108c | 6495 | { |
c5aa993b JM |
6496 | char *cond_string = NULL; |
6497 | struct symtab_and_line *sal = NULL; | |
6498 | ||
c906108c | 6499 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6500 | |
c906108c SS |
6501 | cond_string = ep_parse_optional_if_clause (&arg); |
6502 | ||
6503 | if ((*arg != '\0') && !isspace (*arg)) | |
6504 | error ("Junk at end of arguments."); | |
6505 | ||
6506 | if ((ex_event != EX_EVENT_THROW) && | |
6507 | (ex_event != EX_EVENT_CATCH)) | |
6508 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6509 | ||
3086aeae DJ |
6510 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6511 | return; | |
6512 | ||
c906108c SS |
6513 | /* See if we can find a callback routine */ |
6514 | sal = target_enable_exception_callback (ex_event, 1); | |
6515 | ||
c5aa993b | 6516 | if (sal) |
c906108c SS |
6517 | { |
6518 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6519 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6520 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6521 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6522 | else |
53a5351d | 6523 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6524 | } |
c5aa993b | 6525 | |
69f567ae | 6526 | warning ("Unsupported with this platform/compiler combination."); |
c906108c SS |
6527 | } |
6528 | ||
6529 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6530 | inside a catch_errors */ | |
6531 | ||
6532 | static int | |
4efb68b1 | 6533 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6534 | { |
6535 | args_for_catchpoint_enable *args = arg; | |
6536 | struct symtab_and_line *sal; | |
b5de0fa7 | 6537 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6538 | if (sal == NULL) |
6539 | return 0; | |
6540 | else if (sal == (struct symtab_and_line *) -1) | |
6541 | return -1; | |
6542 | else | |
c5aa993b | 6543 | return 1; /*is valid */ |
c906108c SS |
6544 | } |
6545 | ||
c906108c | 6546 | static void |
fba45db2 | 6547 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6548 | { |
c5aa993b | 6549 | |
c906108c SS |
6550 | /* The first argument may be an event name, such as "start" or "load". |
6551 | If so, then handle it as such. If it doesn't match an event name, | |
6552 | then attempt to interpret it as an exception name. (This latter is | |
6553 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6554 | |
c906108c | 6555 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6556 | char *arg1_start = arg; |
6557 | char *arg1_end; | |
6558 | int arg1_length; | |
6559 | ||
c906108c SS |
6560 | if (arg1_start == NULL) |
6561 | { | |
c5aa993b | 6562 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6563 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6564 | /* return; */ | |
c5aa993b | 6565 | /* Now, this is not allowed */ |
c906108c SS |
6566 | error ("Catch requires an event name."); |
6567 | ||
6568 | } | |
6569 | arg1_end = ep_find_event_name_end (arg1_start); | |
6570 | if (arg1_end == NULL) | |
6571 | error ("catch requires an event"); | |
6572 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6573 | |
c906108c SS |
6574 | /* Try to match what we found against known event names. */ |
6575 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6576 | { | |
6577 | error ("Catch of signal not yet implemented"); | |
6578 | } | |
6579 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6580 | { | |
53a5351d JM |
6581 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6582 | tempflag, from_tty); | |
c906108c SS |
6583 | } |
6584 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6585 | { | |
53a5351d JM |
6586 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6587 | tempflag, from_tty); | |
c906108c SS |
6588 | } |
6589 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6590 | { | |
6591 | error ("Catch of thread_start not yet implemented"); | |
6592 | } | |
6593 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6594 | { | |
6595 | error ("Catch of thread_exit not yet implemented"); | |
6596 | } | |
6597 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6598 | { | |
6599 | error ("Catch of thread_join not yet implemented"); | |
6600 | } | |
6601 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6602 | { | |
6603 | error ("Catch of start not yet implemented"); | |
6604 | } | |
6605 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6606 | { | |
6607 | error ("Catch of exit not yet implemented"); | |
6608 | } | |
6609 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6610 | { | |
c5aa993b | 6611 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6612 | } |
6613 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6614 | { | |
c5aa993b | 6615 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6616 | } |
6617 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6618 | { | |
c5aa993b | 6619 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6620 | } |
6621 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6622 | { | |
c5aa993b | 6623 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6624 | } |
6625 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6626 | { | |
c5aa993b | 6627 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6628 | } |
6629 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6630 | { | |
6631 | error ("Catch of stop not yet implemented"); | |
6632 | } | |
c5aa993b | 6633 | |
c906108c SS |
6634 | /* This doesn't appear to be an event name */ |
6635 | ||
6636 | else | |
6637 | { | |
6638 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6639 | as the name of an exception */ |
c906108c | 6640 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6641 | /* Now this is not allowed */ |
c906108c SS |
6642 | error ("Unknown event kind specified for catch"); |
6643 | ||
6644 | } | |
6645 | } | |
6646 | ||
6647 | /* Used by the gui, could be made a worker for other things. */ | |
6648 | ||
6649 | struct breakpoint * | |
fba45db2 | 6650 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6651 | { |
6652 | struct breakpoint *b; | |
4d28f7a8 | 6653 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6654 | set_breakpoint_count (breakpoint_count + 1); |
6655 | b->number = breakpoint_count; | |
c906108c SS |
6656 | b->cond = 0; |
6657 | b->thread = -1; | |
6658 | return b; | |
6659 | } | |
6660 | ||
c906108c | 6661 | static void |
fba45db2 | 6662 | catch_command (char *arg, int from_tty) |
c906108c SS |
6663 | { |
6664 | catch_command_1 (arg, 0, from_tty); | |
6665 | } | |
6666 | \f | |
6667 | ||
6668 | static void | |
fba45db2 | 6669 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6670 | { |
6671 | catch_command_1 (arg, 1, from_tty); | |
6672 | } | |
6673 | ||
80f8a6eb | 6674 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6675 | |
6676 | static void | |
fba45db2 | 6677 | clear_command (char *arg, int from_tty) |
c906108c | 6678 | { |
80f8a6eb | 6679 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6680 | int default_match; |
6681 | struct symtabs_and_lines sals; | |
6682 | struct symtab_and_line sal; | |
c906108c SS |
6683 | int i; |
6684 | ||
6685 | if (arg) | |
6686 | { | |
6687 | sals = decode_line_spec (arg, 1); | |
6688 | default_match = 0; | |
6689 | } | |
6690 | else | |
6691 | { | |
c5aa993b | 6692 | sals.sals = (struct symtab_and_line *) |
c906108c | 6693 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6694 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6695 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6696 | sal.line = default_breakpoint_line; |
6697 | sal.symtab = default_breakpoint_symtab; | |
6698 | sal.pc = default_breakpoint_address; | |
6699 | if (sal.symtab == 0) | |
6700 | error ("No source file specified."); | |
6701 | ||
6702 | sals.sals[0] = sal; | |
6703 | sals.nelts = 1; | |
6704 | ||
6705 | default_match = 1; | |
6706 | } | |
6707 | ||
6708 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6709 | to it. Do it in two passes, solely to preserve the current |
6710 | behavior that from_tty is forced true if we delete more than | |
6711 | one breakpoint. */ | |
c906108c | 6712 | |
80f8a6eb | 6713 | found = NULL; |
c906108c SS |
6714 | for (i = 0; i < sals.nelts; i++) |
6715 | { | |
6716 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6717 | If line given (pc == 0), clear all bpts on specified line. |
6718 | If defaulting, clear all bpts on default line | |
c906108c | 6719 | or at default pc. |
c5aa993b JM |
6720 | |
6721 | defaulting sal.pc != 0 tests to do | |
6722 | ||
6723 | 0 1 pc | |
6724 | 1 1 pc _and_ line | |
6725 | 0 0 line | |
6726 | 1 0 <can't happen> */ | |
c906108c SS |
6727 | |
6728 | sal = sals.sals[i]; | |
80f8a6eb | 6729 | prev = NULL; |
c906108c | 6730 | |
80f8a6eb MS |
6731 | /* Find all matching breakpoints, remove them from the |
6732 | breakpoint chain, and add them to the 'found' chain. */ | |
6733 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6734 | { |
80f8a6eb MS |
6735 | /* Are we going to delete b? */ |
6736 | if (b->type != bp_none | |
6737 | && b->type != bp_watchpoint | |
6738 | && b->type != bp_hardware_watchpoint | |
6739 | && b->type != bp_read_watchpoint | |
6740 | && b->type != bp_access_watchpoint | |
6741 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6742 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6743 | && (!section_is_overlay (b->loc->section) |
6744 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6745 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6746 | || ((default_match || (0 == sal.pc)) | |
6747 | && b->source_file != NULL | |
6748 | && sal.symtab != NULL | |
6314a349 | 6749 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
80f8a6eb MS |
6750 | && b->line_number == sal.line))) |
6751 | /* Yes, if sal source file and line matches b. */ | |
6752 | { | |
6753 | /* Remove it from breakpoint_chain... */ | |
6754 | if (b == breakpoint_chain) | |
6755 | { | |
6756 | /* b is at the head of the list */ | |
6757 | breakpoint_chain = b->next; | |
6758 | } | |
6759 | else | |
6760 | { | |
6761 | prev->next = b->next; | |
6762 | } | |
6763 | /* And add it to 'found' chain. */ | |
6764 | b->next = found; | |
6765 | found = b; | |
6766 | } | |
c906108c | 6767 | else |
80f8a6eb MS |
6768 | { |
6769 | /* Keep b, and keep a pointer to it. */ | |
6770 | prev = b; | |
6771 | } | |
c906108c | 6772 | } |
80f8a6eb MS |
6773 | } |
6774 | /* Now go thru the 'found' chain and delete them. */ | |
6775 | if (found == 0) | |
6776 | { | |
6777 | if (arg) | |
6778 | error ("No breakpoint at %s.", arg); | |
6779 | else | |
6780 | error ("No breakpoint at this line."); | |
6781 | } | |
c906108c | 6782 | |
80f8a6eb MS |
6783 | if (found->next) |
6784 | from_tty = 1; /* Always report if deleted more than one */ | |
6785 | if (from_tty) | |
6786 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6787 | breakpoints_changed (); | |
6788 | while (found) | |
6789 | { | |
c5aa993b | 6790 | if (from_tty) |
80f8a6eb MS |
6791 | printf_unfiltered ("%d ", found->number); |
6792 | tmp = found->next; | |
6793 | delete_breakpoint (found); | |
6794 | found = tmp; | |
c906108c | 6795 | } |
80f8a6eb MS |
6796 | if (from_tty) |
6797 | putchar_unfiltered ('\n'); | |
c906108c SS |
6798 | } |
6799 | \f | |
6800 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6801 | all breakpoints that are marked for deletion, whether hit or not. | |
6802 | This is called after any breakpoint is hit, or after errors. */ | |
6803 | ||
6804 | void | |
fba45db2 | 6805 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6806 | { |
6807 | struct breakpoint *b, *temp; | |
6808 | ||
6809 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6810 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6811 | && bs->stop) |
6812 | delete_breakpoint (bs->breakpoint_at); | |
6813 | ||
6814 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6815 | { |
b5de0fa7 | 6816 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6817 | delete_breakpoint (b); |
6818 | } | |
c906108c SS |
6819 | } |
6820 | ||
53a5351d JM |
6821 | /* Delete a breakpoint and clean up all traces of it in the data |
6822 | structures. */ | |
c906108c SS |
6823 | |
6824 | void | |
fba45db2 | 6825 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6826 | { |
52f0bd74 AC |
6827 | struct breakpoint *b; |
6828 | bpstat bs; | |
7cc221ef | 6829 | struct bp_location *loc; |
c906108c SS |
6830 | |
6831 | if (bpt == NULL) | |
6832 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6833 | ||
6834 | ||
6835 | /* Has this bp already been deleted? This can happen because multiple | |
6836 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6837 | ||
6838 | One example of this happening is a watchpoint's scope bp. When the | |
6839 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6840 | delete it. We also delete its scope bp. But the scope bp is marked | |
6841 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6842 | checked for auto-deleting bp's, which are deleted. | |
6843 | ||
6844 | A real solution to this problem might involve reference counts in bp's, | |
6845 | and/or giving them pointers back to their referencing bpstat's, and | |
6846 | teaching delete_breakpoint to only free a bp's storage when no more | |
6847 | references were extent. A cheaper bandaid was chosen. */ | |
6848 | if (bpt->type == bp_none) | |
6849 | return; | |
6850 | ||
6851 | if (delete_breakpoint_hook) | |
6852 | delete_breakpoint_hook (bpt); | |
104c1213 | 6853 | breakpoint_delete_event (bpt->number); |
c906108c | 6854 | |
5cab636d | 6855 | if (bpt->loc->inserted) |
0bde7532 | 6856 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6857 | |
c906108c SS |
6858 | if (breakpoint_chain == bpt) |
6859 | breakpoint_chain = bpt->next; | |
6860 | ||
7cc221ef DJ |
6861 | if (bp_location_chain == bpt->loc) |
6862 | bp_location_chain = bpt->loc->next; | |
6863 | ||
c906108c SS |
6864 | /* If we have callback-style exception catchpoints, don't go through |
6865 | the adjustments to the C++ runtime library etc. if the inferior | |
6866 | isn't actually running. target_enable_exception_callback for a | |
6867 | null target ops vector gives an undesirable error message, so we | |
6868 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6869 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6870 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6871 | { | |
53a5351d | 6872 | /* Format possible error msg */ |
9ebf4acf AC |
6873 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6874 | bpt->number); | |
6875 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
6876 | args_for_catchpoint_enable args; | |
53a5351d JM |
6877 | args.kind = bpt->type == bp_catch_catch ? |
6878 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6879 | args.enable_p = 0; |
c906108c SS |
6880 | catch_errors (cover_target_enable_exception_callback, &args, |
6881 | message, RETURN_MASK_ALL); | |
9ebf4acf | 6882 | do_cleanups (cleanups); |
c906108c SS |
6883 | } |
6884 | ||
6885 | ||
6886 | ALL_BREAKPOINTS (b) | |
6887 | if (b->next == bpt) | |
c5aa993b JM |
6888 | { |
6889 | b->next = bpt->next; | |
6890 | break; | |
6891 | } | |
c906108c | 6892 | |
7cc221ef DJ |
6893 | ALL_BP_LOCATIONS (loc) |
6894 | if (loc->next == bpt->loc) | |
6895 | { | |
6896 | loc->next = bpt->loc->next; | |
6897 | break; | |
6898 | } | |
6899 | ||
9f60f21b | 6900 | check_duplicates (bpt); |
c906108c SS |
6901 | /* If this breakpoint was inserted, and there is another breakpoint |
6902 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 6903 | if (bpt->loc->inserted |
c906108c SS |
6904 | && bpt->type != bp_hardware_watchpoint |
6905 | && bpt->type != bp_read_watchpoint | |
6906 | && bpt->type != bp_access_watchpoint | |
6907 | && bpt->type != bp_catch_fork | |
6908 | && bpt->type != bp_catch_vfork | |
6909 | && bpt->type != bp_catch_exec) | |
6910 | { | |
6911 | ALL_BREAKPOINTS (b) | |
5cab636d | 6912 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 6913 | && b->loc->section == bpt->loc->section |
5cab636d | 6914 | && !b->loc->duplicate |
b5de0fa7 EZ |
6915 | && b->enable_state != bp_disabled |
6916 | && b->enable_state != bp_shlib_disabled | |
0101ce28 | 6917 | && !b->pending |
b5de0fa7 | 6918 | && b->enable_state != bp_call_disabled) |
c5aa993b JM |
6919 | { |
6920 | int val; | |
53a5351d | 6921 | |
c2c6d25f JM |
6922 | /* We should never reach this point if there is a permanent |
6923 | breakpoint at the same address as the one being deleted. | |
6924 | If there is a permanent breakpoint somewhere, it should | |
6925 | always be the only one inserted. */ | |
b5de0fa7 | 6926 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6927 | internal_error (__FILE__, __LINE__, |
6928 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6929 | "a permanent breakpoint"); |
6930 | ||
53a5351d | 6931 | if (b->type == bp_hardware_breakpoint) |
5cab636d | 6932 | val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6933 | else |
5cab636d | 6934 | val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6935 | |
81d0cc19 | 6936 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6937 | if (val != 0) |
6938 | { | |
81d0cc19 GS |
6939 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6940 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6941 | ||
6942 | ||
6943 | if (b->type == bp_hardware_breakpoint) | |
6944 | { | |
6945 | fprintf_unfiltered (tmp_error_stream, | |
6946 | "Cannot insert hardware breakpoint %d.\n" | |
6947 | "You may have requested too many hardware breakpoints.\n", | |
6948 | b->number); | |
6949 | } | |
6950 | else | |
6951 | { | |
6952 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6953 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
5cab636d | 6954 | print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
6955 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
6956 | safe_strerror (val)); | |
6957 | } | |
6958 | ||
6959 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6960 | target_terminal_ours_for_output (); |
81d0cc19 | 6961 | error_stream(tmp_error_stream); |
c5aa993b JM |
6962 | } |
6963 | else | |
5cab636d | 6964 | b->loc->inserted = 1; |
c5aa993b | 6965 | } |
c906108c SS |
6966 | } |
6967 | ||
6968 | free_command_lines (&bpt->commands); | |
6969 | if (bpt->cond) | |
b8c9b27d | 6970 | xfree (bpt->cond); |
c906108c | 6971 | if (bpt->cond_string != NULL) |
b8c9b27d | 6972 | xfree (bpt->cond_string); |
c906108c | 6973 | if (bpt->addr_string != NULL) |
b8c9b27d | 6974 | xfree (bpt->addr_string); |
c906108c | 6975 | if (bpt->exp != NULL) |
b8c9b27d | 6976 | xfree (bpt->exp); |
c906108c | 6977 | if (bpt->exp_string != NULL) |
b8c9b27d | 6978 | xfree (bpt->exp_string); |
c906108c SS |
6979 | if (bpt->val != NULL) |
6980 | value_free (bpt->val); | |
6981 | if (bpt->source_file != NULL) | |
b8c9b27d | 6982 | xfree (bpt->source_file); |
c906108c | 6983 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6984 | xfree (bpt->dll_pathname); |
c906108c | 6985 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6986 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6987 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6988 | xfree (bpt->exec_pathname); |
c906108c SS |
6989 | |
6990 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6991 | /* FIXME, how can we find all bpstat's? | |
6992 | We just check stop_bpstat for now. */ | |
6993 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6994 | if (bs->breakpoint_at == bpt) | |
6995 | { | |
6996 | bs->breakpoint_at = NULL; | |
c906108c | 6997 | bs->old_val = NULL; |
c2b8ed2c | 6998 | /* bs->commands will be freed later. */ |
c906108c SS |
6999 | } |
7000 | /* On the chance that someone will soon try again to delete this same | |
7001 | bp, we mark it as deleted before freeing its storage. */ | |
7002 | bpt->type = bp_none; | |
7003 | ||
5cab636d | 7004 | xfree (bpt->loc); |
b8c9b27d | 7005 | xfree (bpt); |
c906108c SS |
7006 | } |
7007 | ||
4d6140d9 AC |
7008 | static void |
7009 | do_delete_breakpoint_cleanup (void *b) | |
7010 | { | |
7011 | delete_breakpoint (b); | |
7012 | } | |
7013 | ||
7014 | struct cleanup * | |
7015 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7016 | { | |
7017 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7018 | } | |
7019 | ||
7020 | struct cleanup * | |
7021 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
7022 | { | |
7023 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
7024 | } | |
7025 | ||
c906108c | 7026 | void |
fba45db2 | 7027 | delete_command (char *arg, int from_tty) |
c906108c SS |
7028 | { |
7029 | struct breakpoint *b, *temp; | |
7030 | ||
ea9365bb TT |
7031 | dont_repeat (); |
7032 | ||
c906108c SS |
7033 | if (arg == 0) |
7034 | { | |
7035 | int breaks_to_delete = 0; | |
7036 | ||
7037 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7038 | Do not delete internal or call-dummy breakpoints, these |
7039 | have to be deleted with an explicit breakpoint number argument. */ | |
7040 | ALL_BREAKPOINTS (b) | |
7041 | { | |
7042 | if (b->type != bp_call_dummy && | |
7043 | b->type != bp_shlib_event && | |
c4093a6a | 7044 | b->type != bp_thread_event && |
1900040c | 7045 | b->type != bp_overlay_event && |
c5aa993b JM |
7046 | b->number >= 0) |
7047 | breaks_to_delete = 1; | |
7048 | } | |
c906108c SS |
7049 | |
7050 | /* Ask user only if there are some breakpoints to delete. */ | |
7051 | if (!from_tty | |
7052 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
7053 | { | |
c5aa993b JM |
7054 | ALL_BREAKPOINTS_SAFE (b, temp) |
7055 | { | |
7056 | if (b->type != bp_call_dummy && | |
7057 | b->type != bp_shlib_event && | |
c4093a6a | 7058 | b->type != bp_thread_event && |
1900040c | 7059 | b->type != bp_overlay_event && |
c5aa993b JM |
7060 | b->number >= 0) |
7061 | delete_breakpoint (b); | |
7062 | } | |
c906108c SS |
7063 | } |
7064 | } | |
7065 | else | |
7066 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7067 | } | |
7068 | ||
7069 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
7070 | The value we return ends up being the return value from catch_errors. | |
7071 | Unused in this case. */ | |
7072 | ||
7073 | static int | |
4efb68b1 | 7074 | breakpoint_re_set_one (void *bint) |
c906108c | 7075 | { |
53a5351d JM |
7076 | /* get past catch_errs */ |
7077 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7078 | struct value *mark; |
7079 | int i; | |
7080 | struct symtabs_and_lines sals; | |
7081 | char *s; | |
b5de0fa7 | 7082 | enum enable_state save_enable; |
c906108c SS |
7083 | |
7084 | switch (b->type) | |
7085 | { | |
7086 | case bp_none: | |
53a5351d JM |
7087 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
7088 | b->number); | |
c906108c SS |
7089 | return 0; |
7090 | case bp_breakpoint: | |
7091 | case bp_hardware_breakpoint: | |
7092 | case bp_catch_load: | |
7093 | case bp_catch_unload: | |
7094 | if (b->addr_string == NULL) | |
7095 | { | |
7096 | /* Anything without a string can't be re-set. */ | |
7097 | delete_breakpoint (b); | |
7098 | return 0; | |
7099 | } | |
b18c45ed AC |
7100 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
7101 | ||
7102 | ``And a hack it is, although Apple's Darwin version of GDB | |
7103 | contains an almost identical hack to implement a "future | |
7104 | break" command. It seems to work in many real world cases, | |
7105 | but it is easy to come up with a test case where the patch | |
7106 | doesn't help at all.'' | |
7107 | ||
7108 | ``It seems that the way GDB implements breakpoints - in - | |
7109 | shared - libraries was designed for a.out shared library | |
7110 | systems (SunOS 4) where shared libraries were loaded at a | |
7111 | fixed address in memory. Since ELF shared libraries can (and | |
7112 | will) be loaded at any address in memory, things break. | |
7113 | Fixing this is not trivial. Therefore, I'm not sure whether | |
7114 | we should add this hack to the branch only. I cannot | |
7115 | guarantee that things will be fixed on the trunk in the near | |
7116 | future.'' | |
7117 | ||
7118 | In case we have a problem, disable this breakpoint. We'll | |
7119 | restore its status if we succeed. Don't disable a | |
7120 | shlib_disabled breakpoint though. There's a fair chance we | |
7121 | can't re-set it if the shared library it's in hasn't been | |
7122 | loaded yet. */ | |
0101ce28 JJ |
7123 | |
7124 | if (b->pending) | |
7125 | break; | |
7126 | ||
b5de0fa7 | 7127 | save_enable = b->enable_state; |
b18c45ed AC |
7128 | if (b->enable_state != bp_shlib_disabled) |
7129 | b->enable_state = bp_disabled; | |
c906108c SS |
7130 | |
7131 | set_language (b->language); | |
7132 | input_radix = b->input_radix; | |
7133 | s = b->addr_string; | |
68219205 | 7134 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
7135 | for (i = 0; i < sals.nelts; i++) |
7136 | { | |
7137 | resolve_sal_pc (&sals.sals[i]); | |
7138 | ||
7139 | /* Reparse conditions, they might contain references to the | |
7140 | old symtab. */ | |
7141 | if (b->cond_string != NULL) | |
7142 | { | |
7143 | s = b->cond_string; | |
7144 | if (b->cond) | |
fad0733a DJ |
7145 | { |
7146 | xfree (b->cond); | |
7147 | /* Avoid re-freeing b->exp if an error during the call | |
7148 | to parse_exp_1. */ | |
7149 | b->cond = NULL; | |
7150 | } | |
c906108c SS |
7151 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7152 | } | |
7153 | ||
c5aa993b | 7154 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 7155 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
7156 | /* ...or new and old breakpoints both have source files, and |
7157 | the source file name or the line number changes... */ | |
c906108c SS |
7158 | || (b->source_file != NULL |
7159 | && sals.sals[i].symtab != NULL | |
6314a349 | 7160 | && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0 |
c906108c | 7161 | || b->line_number != sals.sals[i].line) |
c906108c | 7162 | ) |
c5aa993b JM |
7163 | /* ...or we switch between having a source file and not having |
7164 | one. */ | |
7165 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7166 | ) | |
c906108c SS |
7167 | { |
7168 | if (b->source_file != NULL) | |
b8c9b27d | 7169 | xfree (b->source_file); |
c906108c SS |
7170 | if (sals.sals[i].symtab == NULL) |
7171 | b->source_file = NULL; | |
7172 | else | |
7173 | b->source_file = | |
7174 | savestring (sals.sals[i].symtab->filename, | |
7175 | strlen (sals.sals[i].symtab->filename)); | |
7176 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
7177 | b->loc->requested_address = sals.sals[i].pc; |
7178 | b->loc->address | |
7179 | = adjust_breakpoint_address (b->loc->requested_address); | |
c906108c | 7180 | |
c5aa993b | 7181 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7182 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7183 | breakpoints. */ |
c906108c SS |
7184 | |
7185 | mention (b); | |
7186 | ||
7187 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7188 | rather than once for every breakpoint. */ |
c906108c SS |
7189 | breakpoints_changed (); |
7190 | } | |
cf3a9e5b | 7191 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 7192 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7193 | |
7194 | ||
c5aa993b | 7195 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7196 | can be used. */ |
9f60f21b | 7197 | check_duplicates (b); |
c906108c SS |
7198 | |
7199 | } | |
b8c9b27d | 7200 | xfree (sals.sals); |
c906108c SS |
7201 | break; |
7202 | ||
7203 | case bp_watchpoint: | |
7204 | case bp_hardware_watchpoint: | |
7205 | case bp_read_watchpoint: | |
7206 | case bp_access_watchpoint: | |
7207 | innermost_block = NULL; | |
53a5351d JM |
7208 | /* The issue arises of what context to evaluate this in. The |
7209 | same one as when it was set, but what does that mean when | |
7210 | symbols have been re-read? We could save the filename and | |
7211 | functionname, but if the context is more local than that, the | |
7212 | best we could do would be something like how many levels deep | |
7213 | and which index at that particular level, but that's going to | |
7214 | be less stable than filenames or function names. */ | |
7215 | ||
c906108c SS |
7216 | /* So for now, just use a global context. */ |
7217 | if (b->exp) | |
a355c7de AC |
7218 | { |
7219 | xfree (b->exp); | |
7220 | /* Avoid re-freeing b->exp if an error during the call to | |
7221 | parse_expression. */ | |
7222 | b->exp = NULL; | |
7223 | } | |
c906108c SS |
7224 | b->exp = parse_expression (b->exp_string); |
7225 | b->exp_valid_block = innermost_block; | |
7226 | mark = value_mark (); | |
7227 | if (b->val) | |
a355c7de AC |
7228 | { |
7229 | value_free (b->val); | |
7230 | /* Avoid re-freeing b->val if an error during the call to | |
7231 | evaluate_expression. */ | |
7232 | b->val = NULL; | |
7233 | } | |
c906108c SS |
7234 | b->val = evaluate_expression (b->exp); |
7235 | release_value (b->val); | |
468d015d | 7236 | if (VALUE_LAZY (b->val) && breakpoint_enabled (b)) |
c906108c SS |
7237 | value_fetch_lazy (b->val); |
7238 | ||
7239 | if (b->cond_string != NULL) | |
7240 | { | |
7241 | s = b->cond_string; | |
7242 | if (b->cond) | |
a355c7de AC |
7243 | { |
7244 | xfree (b->cond); | |
7245 | /* Avoid re-freeing b->exp if an error during the call | |
7246 | to parse_exp_1. */ | |
7247 | b->cond = NULL; | |
7248 | } | |
c5aa993b | 7249 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7250 | } |
468d015d | 7251 | if (breakpoint_enabled (b)) |
c906108c SS |
7252 | mention (b); |
7253 | value_free_to_mark (mark); | |
7254 | break; | |
c5aa993b JM |
7255 | case bp_catch_catch: |
7256 | case bp_catch_throw: | |
c906108c | 7257 | break; |
c5aa993b JM |
7258 | /* We needn't really do anything to reset these, since the mask |
7259 | that requests them is unaffected by e.g., new libraries being | |
7260 | loaded. */ | |
c906108c SS |
7261 | case bp_catch_fork: |
7262 | case bp_catch_vfork: | |
7263 | case bp_catch_exec: | |
7264 | break; | |
c5aa993b | 7265 | |
c906108c SS |
7266 | default: |
7267 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7268 | /* fall through */ | |
1900040c MS |
7269 | /* Delete longjmp and overlay event breakpoints; they will be |
7270 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7271 | case bp_longjmp: |
7272 | case bp_longjmp_resume: | |
1900040c | 7273 | case bp_overlay_event: |
c906108c SS |
7274 | delete_breakpoint (b); |
7275 | break; | |
7276 | ||
c5aa993b JM |
7277 | /* This breakpoint is special, it's set up when the inferior |
7278 | starts and we really don't want to touch it. */ | |
c906108c SS |
7279 | case bp_shlib_event: |
7280 | ||
c4093a6a JM |
7281 | /* Like bp_shlib_event, this breakpoint type is special. |
7282 | Once it is set up, we do not want to touch it. */ | |
7283 | case bp_thread_event: | |
7284 | ||
c5aa993b JM |
7285 | /* Keep temporary breakpoints, which can be encountered when we step |
7286 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7287 | Otherwise these should have been blown away via the cleanup chain | |
7288 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7289 | case bp_until: |
7290 | case bp_finish: | |
7291 | case bp_watchpoint_scope: | |
7292 | case bp_call_dummy: | |
7293 | case bp_step_resume: | |
7294 | break; | |
7295 | } | |
7296 | ||
7297 | return 0; | |
7298 | } | |
7299 | ||
7300 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7301 | void | |
fba45db2 | 7302 | breakpoint_re_set (void) |
c906108c SS |
7303 | { |
7304 | struct breakpoint *b, *temp; | |
7305 | enum language save_language; | |
7306 | int save_input_radix; | |
c5aa993b | 7307 | |
c906108c SS |
7308 | save_language = current_language->la_language; |
7309 | save_input_radix = input_radix; | |
7310 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7311 | { |
53a5351d | 7312 | /* Format possible error msg */ |
9ebf4acf AC |
7313 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7314 | b->number); | |
7315 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7316 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7317 | do_cleanups (cleanups); |
c5aa993b | 7318 | } |
c906108c SS |
7319 | set_language (save_language); |
7320 | input_radix = save_input_radix; | |
7321 | ||
9df628e0 RE |
7322 | if (GET_LONGJMP_TARGET_P ()) |
7323 | { | |
7324 | create_longjmp_breakpoint ("longjmp"); | |
7325 | create_longjmp_breakpoint ("_longjmp"); | |
7326 | create_longjmp_breakpoint ("siglongjmp"); | |
7327 | create_longjmp_breakpoint ("_siglongjmp"); | |
7328 | create_longjmp_breakpoint (NULL); | |
7329 | } | |
1900040c MS |
7330 | |
7331 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7332 | } |
7333 | \f | |
c906108c SS |
7334 | /* Reset the thread number of this breakpoint: |
7335 | ||
7336 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7337 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7338 | void |
fba45db2 | 7339 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7340 | { |
7341 | if (b->thread != -1) | |
7342 | { | |
39f77062 KB |
7343 | if (in_thread_list (inferior_ptid)) |
7344 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7345 | } |
7346 | } | |
7347 | ||
03ac34d5 MS |
7348 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7349 | If from_tty is nonzero, it prints a message to that effect, | |
7350 | which ends with a period (no newline). */ | |
7351 | ||
c906108c | 7352 | void |
fba45db2 | 7353 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7354 | { |
52f0bd74 | 7355 | struct breakpoint *b; |
c906108c SS |
7356 | |
7357 | if (count < 0) | |
7358 | count = 0; | |
7359 | ||
7360 | ALL_BREAKPOINTS (b) | |
7361 | if (b->number == bptnum) | |
c5aa993b JM |
7362 | { |
7363 | b->ignore_count = count; | |
221ea385 KS |
7364 | if (from_tty) |
7365 | { | |
7366 | if (count == 0) | |
7367 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7368 | bptnum); | |
7369 | else if (count == 1) | |
7370 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7371 | bptnum); | |
7372 | else | |
7373 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7374 | count, bptnum); | |
7375 | } | |
c5aa993b | 7376 | breakpoints_changed (); |
221ea385 | 7377 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7378 | return; |
7379 | } | |
c906108c SS |
7380 | |
7381 | error ("No breakpoint number %d.", bptnum); | |
7382 | } | |
7383 | ||
7384 | /* Clear the ignore counts of all breakpoints. */ | |
7385 | void | |
fba45db2 | 7386 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7387 | { |
7388 | struct breakpoint *b; | |
7389 | ||
7390 | ALL_BREAKPOINTS (b) | |
7391 | b->ignore_count = 0; | |
7392 | } | |
7393 | ||
7394 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7395 | ||
7396 | static void | |
fba45db2 | 7397 | ignore_command (char *args, int from_tty) |
c906108c SS |
7398 | { |
7399 | char *p = args; | |
52f0bd74 | 7400 | int num; |
c906108c SS |
7401 | |
7402 | if (p == 0) | |
7403 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7404 | |
c906108c | 7405 | num = get_number (&p); |
5c44784c JM |
7406 | if (num == 0) |
7407 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7408 | if (*p == 0) |
7409 | error ("Second argument (specified ignore-count) is missing."); | |
7410 | ||
7411 | set_ignore_count (num, | |
7412 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7413 | from_tty); | |
221ea385 KS |
7414 | if (from_tty) |
7415 | printf_filtered ("\n"); | |
c906108c SS |
7416 | } |
7417 | \f | |
7418 | /* Call FUNCTION on each of the breakpoints | |
7419 | whose numbers are given in ARGS. */ | |
7420 | ||
7421 | static void | |
831662b3 | 7422 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7423 | { |
52f0bd74 | 7424 | char *p = args; |
c906108c | 7425 | char *p1; |
52f0bd74 AC |
7426 | int num; |
7427 | struct breakpoint *b, *tmp; | |
11cf8741 | 7428 | int match; |
c906108c SS |
7429 | |
7430 | if (p == 0) | |
7431 | error_no_arg ("one or more breakpoint numbers"); | |
7432 | ||
7433 | while (*p) | |
7434 | { | |
11cf8741 | 7435 | match = 0; |
c906108c | 7436 | p1 = p; |
c5aa993b | 7437 | |
5c44784c JM |
7438 | num = get_number_or_range (&p1); |
7439 | if (num == 0) | |
c5aa993b | 7440 | { |
5c44784c JM |
7441 | warning ("bad breakpoint number at or near '%s'", p); |
7442 | } | |
7443 | else | |
7444 | { | |
7445 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7446 | if (b->number == num) | |
7447 | { | |
7448 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7449 | match = 1; |
5c44784c JM |
7450 | function (b); |
7451 | if (related_breakpoint) | |
7452 | function (related_breakpoint); | |
11cf8741 | 7453 | break; |
5c44784c | 7454 | } |
11cf8741 JM |
7455 | if (match == 0) |
7456 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7457 | } |
c906108c SS |
7458 | p = p1; |
7459 | } | |
7460 | } | |
7461 | ||
1900040c MS |
7462 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7463 | If from_tty is nonzero, it prints a message to that effect, | |
7464 | which ends with a period (no newline). */ | |
7465 | ||
c906108c | 7466 | void |
fba45db2 | 7467 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7468 | { |
7469 | /* Never disable a watchpoint scope breakpoint; we want to | |
7470 | hit them when we leave scope so we can delete both the | |
7471 | watchpoint and its scope breakpoint at that time. */ | |
7472 | if (bpt->type == bp_watchpoint_scope) | |
7473 | return; | |
7474 | ||
c2c6d25f | 7475 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7476 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7477 | return; |
7478 | ||
b5de0fa7 | 7479 | bpt->enable_state = bp_disabled; |
c906108c | 7480 | |
9f60f21b | 7481 | check_duplicates (bpt); |
c906108c SS |
7482 | |
7483 | if (modify_breakpoint_hook) | |
7484 | modify_breakpoint_hook (bpt); | |
104c1213 | 7485 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7486 | } |
7487 | ||
c906108c | 7488 | static void |
fba45db2 | 7489 | disable_command (char *args, int from_tty) |
c906108c | 7490 | { |
52f0bd74 | 7491 | struct breakpoint *bpt; |
c906108c SS |
7492 | if (args == 0) |
7493 | ALL_BREAKPOINTS (bpt) | |
7494 | switch (bpt->type) | |
c5aa993b JM |
7495 | { |
7496 | case bp_none: | |
53a5351d JM |
7497 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7498 | bpt->number); | |
c5aa993b JM |
7499 | continue; |
7500 | case bp_breakpoint: | |
7501 | case bp_catch_load: | |
7502 | case bp_catch_unload: | |
7503 | case bp_catch_fork: | |
7504 | case bp_catch_vfork: | |
7505 | case bp_catch_exec: | |
7506 | case bp_catch_catch: | |
7507 | case bp_catch_throw: | |
7508 | case bp_hardware_breakpoint: | |
7509 | case bp_watchpoint: | |
7510 | case bp_hardware_watchpoint: | |
7511 | case bp_read_watchpoint: | |
7512 | case bp_access_watchpoint: | |
7513 | disable_breakpoint (bpt); | |
7514 | default: | |
7515 | continue; | |
7516 | } | |
c906108c SS |
7517 | else |
7518 | map_breakpoint_numbers (args, disable_breakpoint); | |
7519 | } | |
7520 | ||
7521 | static void | |
fba45db2 | 7522 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7523 | { |
7524 | struct frame_info *save_selected_frame = NULL; | |
7525 | int save_selected_frame_level = -1; | |
7526 | int target_resources_ok, other_type_used; | |
7527 | struct value *mark; | |
7528 | ||
7529 | if (bpt->type == bp_hardware_breakpoint) | |
7530 | { | |
7531 | int i; | |
c5aa993b | 7532 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7533 | target_resources_ok = |
7534 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7535 | i + 1, 0); | |
c906108c | 7536 | if (target_resources_ok == 0) |
c5aa993b | 7537 | error ("No hardware breakpoint support in the target."); |
c906108c | 7538 | else if (target_resources_ok < 0) |
c5aa993b | 7539 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7540 | } |
7541 | ||
0101ce28 | 7542 | if (bpt->pending) |
c906108c | 7543 | { |
0101ce28 | 7544 | if (bpt->enable_state != bp_enabled) |
c906108c | 7545 | { |
0101ce28 JJ |
7546 | /* When enabling a pending breakpoint, we need to check if the breakpoint |
7547 | is resolvable since shared libraries could have been loaded | |
7548 | after the breakpoint was disabled. */ | |
7549 | breakpoints_changed (); | |
7550 | if (resolve_pending_breakpoint (bpt) == GDB_RC_OK) | |
c906108c | 7551 | { |
0101ce28 | 7552 | delete_breakpoint (bpt); |
c906108c SS |
7553 | return; |
7554 | } | |
0101ce28 JJ |
7555 | bpt->enable_state = bp_enabled; |
7556 | bpt->disposition = disposition; | |
c906108c | 7557 | } |
0101ce28 JJ |
7558 | } |
7559 | else /* Not a pending breakpoint. */ | |
7560 | { | |
7561 | if (bpt->enable_state != bp_permanent) | |
7562 | bpt->enable_state = bp_enabled; | |
7563 | bpt->disposition = disposition; | |
7564 | check_duplicates (bpt); | |
7565 | breakpoints_changed (); | |
7566 | ||
7567 | if (bpt->type == bp_watchpoint || | |
7568 | bpt->type == bp_hardware_watchpoint || | |
7569 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7570 | bpt->type == bp_access_watchpoint) |
7571 | { | |
0101ce28 JJ |
7572 | if (bpt->exp_valid_block != NULL) |
7573 | { | |
7574 | struct frame_info *fr = | |
7575 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7576 | if (fr == NULL) | |
7577 | { | |
7578 | printf_filtered ("\ | |
7579 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7580 | is valid is not currently in scope.\n", bpt->number); | |
7581 | bpt->enable_state = bp_disabled; | |
7582 | return; | |
7583 | } | |
7584 | ||
7585 | save_selected_frame = deprecated_selected_frame; | |
7586 | save_selected_frame_level = frame_relative_level (deprecated_selected_frame); | |
7587 | select_frame (fr); | |
7588 | } | |
7589 | ||
7590 | value_free (bpt->val); | |
7591 | mark = value_mark (); | |
7592 | bpt->val = evaluate_expression (bpt->exp); | |
7593 | release_value (bpt->val); | |
7594 | if (VALUE_LAZY (bpt->val)) | |
7595 | value_fetch_lazy (bpt->val); | |
7596 | ||
7597 | if (bpt->type == bp_hardware_watchpoint || | |
7598 | bpt->type == bp_read_watchpoint || | |
7599 | bpt->type == bp_access_watchpoint) | |
c5aa993b | 7600 | { |
0101ce28 JJ |
7601 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7602 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7603 | ||
7604 | /* Hack around 'unused var' error for some targets here */ | |
7605 | (void) mem_cnt, i; | |
7606 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7607 | bpt->type, i + mem_cnt, other_type_used); | |
7608 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7609 | bp_watchpoint in the following condition */ | |
7610 | if (target_resources_ok < 0) | |
7611 | { | |
7612 | printf_filtered ("\ | |
c906108c SS |
7613 | Cannot enable watchpoint %d because target watch resources\n\ |
7614 | have been allocated for other watchpoints.\n", bpt->number); | |
0101ce28 JJ |
7615 | bpt->enable_state = bp_disabled; |
7616 | value_free_to_mark (mark); | |
7617 | return; | |
7618 | } | |
c5aa993b | 7619 | } |
0101ce28 JJ |
7620 | |
7621 | if (save_selected_frame_level >= 0) | |
7622 | select_frame (save_selected_frame); | |
7623 | value_free_to_mark (mark); | |
c5aa993b | 7624 | } |
c906108c | 7625 | } |
0101ce28 | 7626 | |
c906108c SS |
7627 | if (modify_breakpoint_hook) |
7628 | modify_breakpoint_hook (bpt); | |
104c1213 | 7629 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7630 | } |
7631 | ||
7632 | void | |
fba45db2 | 7633 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7634 | { |
7635 | do_enable_breakpoint (bpt, bpt->disposition); | |
7636 | } | |
7637 | ||
7638 | /* The enable command enables the specified breakpoints (or all defined | |
7639 | breakpoints) so they once again become (or continue to be) effective | |
7640 | in stopping the inferior. */ | |
7641 | ||
c906108c | 7642 | static void |
fba45db2 | 7643 | enable_command (char *args, int from_tty) |
c906108c | 7644 | { |
52f0bd74 | 7645 | struct breakpoint *bpt; |
c906108c SS |
7646 | if (args == 0) |
7647 | ALL_BREAKPOINTS (bpt) | |
7648 | switch (bpt->type) | |
c5aa993b JM |
7649 | { |
7650 | case bp_none: | |
53a5351d JM |
7651 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7652 | bpt->number); | |
c5aa993b JM |
7653 | continue; |
7654 | case bp_breakpoint: | |
7655 | case bp_catch_load: | |
7656 | case bp_catch_unload: | |
7657 | case bp_catch_fork: | |
7658 | case bp_catch_vfork: | |
7659 | case bp_catch_exec: | |
7660 | case bp_catch_catch: | |
7661 | case bp_catch_throw: | |
7662 | case bp_hardware_breakpoint: | |
7663 | case bp_watchpoint: | |
7664 | case bp_hardware_watchpoint: | |
7665 | case bp_read_watchpoint: | |
7666 | case bp_access_watchpoint: | |
7667 | enable_breakpoint (bpt); | |
7668 | default: | |
7669 | continue; | |
7670 | } | |
c906108c SS |
7671 | else |
7672 | map_breakpoint_numbers (args, enable_breakpoint); | |
7673 | } | |
7674 | ||
7675 | static void | |
fba45db2 | 7676 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7677 | { |
b5de0fa7 | 7678 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7679 | } |
7680 | ||
c906108c | 7681 | static void |
fba45db2 | 7682 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7683 | { |
7684 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7685 | } | |
7686 | ||
7687 | static void | |
fba45db2 | 7688 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7689 | { |
b5de0fa7 | 7690 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7691 | } |
7692 | ||
c906108c | 7693 | static void |
fba45db2 | 7694 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7695 | { |
7696 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7697 | } | |
7698 | \f | |
7699 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7700 | ||
7701 | struct symtabs_and_lines | |
fba45db2 | 7702 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7703 | { |
7704 | struct symtabs_and_lines sals; | |
7705 | if (string == 0) | |
7706 | error ("Empty line specification."); | |
7707 | if (default_breakpoint_valid) | |
7708 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7709 | default_breakpoint_symtab, |
7710 | default_breakpoint_line, | |
68219205 | 7711 | (char ***) NULL, NULL); |
c906108c SS |
7712 | else |
7713 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7714 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
7715 | if (*string) |
7716 | error ("Junk at end of line specification: %s", string); | |
7717 | return sals; | |
7718 | } | |
7719 | \f | |
7720 | void | |
fba45db2 | 7721 | _initialize_breakpoint (void) |
c906108c SS |
7722 | { |
7723 | struct cmd_list_element *c; | |
7724 | ||
7725 | breakpoint_chain = 0; | |
7726 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7727 | before a breakpoint is set. */ | |
7728 | breakpoint_count = 0; | |
7729 | ||
7730 | add_com ("ignore", class_breakpoint, ignore_command, | |
7731 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7732 | Usage is `ignore N COUNT'."); | |
7733 | if (xdb_commands) | |
c5aa993b | 7734 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7735 | |
7736 | add_com ("commands", class_breakpoint, commands_command, | |
7737 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7738 | Give breakpoint number as argument after \"commands\".\n\ | |
7739 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7740 | The commands themselves follow starting on the next line.\n\ | |
7741 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7742 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7743 | then no output is printed when it is hit, except what the commands print."); | |
7744 | ||
7745 | add_com ("condition", class_breakpoint, condition_command, | |
7746 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7747 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7748 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7749 | |
c94fdfd0 EZ |
7750 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7751 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7752 | Like \"break\" except the breakpoint is only temporary,\n\ |
7753 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7754 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7755 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7756 | |
c94fdfd0 EZ |
7757 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7758 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7759 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7760 | some target hardware may not have this support."); | |
5ba2abeb | 7761 | set_cmd_completer (c, location_completer); |
c906108c | 7762 | |
c94fdfd0 EZ |
7763 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7764 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7765 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7766 | so it will be deleted when hit."); | |
5ba2abeb | 7767 | set_cmd_completer (c, location_completer); |
c906108c SS |
7768 | |
7769 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7770 | "Enable some breakpoints.\n\ | |
7771 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7772 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7773 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7774 | With a subcommand you can enable temporarily.", | |
7775 | &enablelist, "enable ", 1, &cmdlist); | |
7776 | if (xdb_commands) | |
c5aa993b JM |
7777 | add_com ("ab", class_breakpoint, enable_command, |
7778 | "Enable some breakpoints.\n\ | |
c906108c SS |
7779 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7780 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7781 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7782 | With a subcommand you can enable temporarily."); | |
7783 | ||
7784 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7785 | ||
7786 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7787 | "Enable some breakpoints.\n\ |
c906108c SS |
7788 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7789 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7790 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7791 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7792 | |
7793 | add_cmd ("once", no_class, enable_once_command, | |
7794 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7795 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7796 | &enablebreaklist); | |
7797 | ||
7798 | add_cmd ("delete", no_class, enable_delete_command, | |
7799 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7800 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7801 | &enablebreaklist); | |
7802 | ||
7803 | add_cmd ("delete", no_class, enable_delete_command, | |
7804 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7805 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7806 | &enablelist); | |
7807 | ||
7808 | add_cmd ("once", no_class, enable_once_command, | |
7809 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7810 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7811 | &enablelist); | |
7812 | ||
7813 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7814 | "Disable some breakpoints.\n\ |
c906108c SS |
7815 | Arguments are breakpoint numbers with spaces in between.\n\ |
7816 | To disable all breakpoints, give no argument.\n\ | |
7817 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7818 | &disablelist, "disable ", 1, &cmdlist); | |
7819 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7820 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7821 | if (xdb_commands) | |
c5aa993b JM |
7822 | add_com ("sb", class_breakpoint, disable_command, |
7823 | "Disable some breakpoints.\n\ | |
c906108c SS |
7824 | Arguments are breakpoint numbers with spaces in between.\n\ |
7825 | To disable all breakpoints, give no argument.\n\ | |
7826 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7827 | ||
7828 | add_cmd ("breakpoints", class_alias, disable_command, | |
7829 | "Disable some breakpoints.\n\ | |
7830 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7831 | To disable all breakpoints, give no argument.\n\ | |
7832 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7833 | This command may be abbreviated \"disable\".", | |
7834 | &disablelist); | |
7835 | ||
7836 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7837 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7838 | Arguments are breakpoint numbers with spaces in between.\n\ |
7839 | To delete all breakpoints, give no argument.\n\ | |
7840 | \n\ | |
7841 | Also a prefix command for deletion of other GDB objects.\n\ | |
7842 | The \"unset\" command is also an alias for \"delete\".", | |
7843 | &deletelist, "delete ", 1, &cmdlist); | |
7844 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7845 | if (xdb_commands) | |
7846 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7847 | "Delete some breakpoints.\n\ |
c906108c SS |
7848 | Arguments are breakpoint numbers with spaces in between.\n\ |
7849 | To delete all breakpoints, give no argument.\n"); | |
7850 | ||
7851 | add_cmd ("breakpoints", class_alias, delete_command, | |
7852 | "Delete some breakpoints or auto-display expressions.\n\ | |
7853 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7854 | To delete all breakpoints, give no argument.\n\ | |
7855 | This command may be abbreviated \"delete\".", | |
7856 | &deletelist); | |
7857 | ||
7858 | add_com ("clear", class_breakpoint, clear_command, | |
7859 | concat ("Clear breakpoint at specified line or function.\n\ | |
7860 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7861 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7862 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7863 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7864 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7865 | is executing in.\n\ |
7866 | \n\ | |
7867 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7868 | ||
c94fdfd0 EZ |
7869 | c = add_com ("break", class_breakpoint, break_command, |
7870 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7871 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7872 | If line number is specified, break at start of code for that line.\n\ | |
7873 | If function is specified, break at start of code for that function.\n\ | |
7874 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7875 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7876 | This is useful for breaking on return to a stack frame.\n\ |
7877 | \n\ | |
7878 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7879 | \n\ | |
7880 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7881 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7882 | |
c906108c SS |
7883 | add_com_alias ("b", "break", class_run, 1); |
7884 | add_com_alias ("br", "break", class_run, 1); | |
7885 | add_com_alias ("bre", "break", class_run, 1); | |
7886 | add_com_alias ("brea", "break", class_run, 1); | |
7887 | ||
502fd408 | 7888 | if (xdb_commands) |
c906108c SS |
7889 | { |
7890 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7891 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7892 | } |
7893 | ||
7894 | if (dbx_commands) | |
7895 | { | |
c5aa993b JM |
7896 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7897 | "Break in function/address or break at a line in the current file.", | |
7898 | &stoplist, "stop ", 1, &cmdlist); | |
7899 | add_cmd ("in", class_breakpoint, stopin_command, | |
7900 | "Break in function or address.\n", &stoplist); | |
7901 | add_cmd ("at", class_breakpoint, stopat_command, | |
7902 | "Break at a line in the current file.\n", &stoplist); | |
7903 | add_com ("status", class_info, breakpoints_info, | |
7904 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7905 | The \"Type\" column indicates one of:\n\ |
7906 | \tbreakpoint - normal breakpoint\n\ | |
7907 | \twatchpoint - watchpoint\n\ | |
7908 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7909 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7910 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7911 | address and file/line number respectively.\n\n", | |
c5aa993b | 7912 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7913 | are set to the address of the last breakpoint listed.\n\n\ |
7914 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7915 | breakpoint set.", NULL)); | |
7916 | } | |
7917 | ||
7918 | add_info ("breakpoints", breakpoints_info, | |
7919 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7920 | The \"Type\" column indicates one of:\n\ | |
7921 | \tbreakpoint - normal breakpoint\n\ | |
7922 | \twatchpoint - watchpoint\n\ | |
7923 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7924 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7925 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7926 | address and file/line number respectively.\n\n", | |
c5aa993b | 7927 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7928 | are set to the address of the last breakpoint listed.\n\n\ |
7929 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7930 | breakpoint set.", NULL)); | |
7931 | ||
7932 | if (xdb_commands) | |
c5aa993b JM |
7933 | add_com ("lb", class_breakpoint, breakpoints_info, |
7934 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7935 | The \"Type\" column indicates one of:\n\ |
7936 | \tbreakpoint - normal breakpoint\n\ | |
7937 | \twatchpoint - watchpoint\n\ | |
7938 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7939 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7940 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7941 | address and file/line number respectively.\n\n", | |
c5aa993b | 7942 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7943 | are set to the address of the last breakpoint listed.\n\n\ |
7944 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7945 | breakpoint set.", NULL)); | |
7946 | ||
c906108c | 7947 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7948 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7949 | The \"Type\" column indicates one of:\n\ |
7950 | \tbreakpoint - normal breakpoint\n\ | |
7951 | \twatchpoint - watchpoint\n\ | |
7952 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7953 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7954 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7955 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7956 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7957 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7958 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7959 | address and file/line number respectively.\n\n", | |
c5aa993b | 7960 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7961 | are set to the address of the last breakpoint listed.\n\n\ |
7962 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7963 | breakpoint set.", NULL), | |
7964 | &maintenanceinfolist); | |
7965 | ||
c906108c | 7966 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7967 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7968 | Raised signals may be caught:\n\ |
7969 | \tcatch signal - all signals\n\ | |
7970 | \tcatch signal <signame> - a particular signal\n\ | |
7971 | Raised exceptions may be caught:\n\ | |
7972 | \tcatch throw - all exceptions, when thrown\n\ | |
7973 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7974 | \tcatch catch - all exceptions, when caught\n\ | |
7975 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7976 | Thread or process events may be caught:\n\ | |
7977 | \tcatch thread_start - any threads, just after creation\n\ | |
7978 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7979 | \tcatch thread_join - any threads, just after joins\n\ | |
7980 | Process events may be caught:\n\ | |
7981 | \tcatch start - any processes, just after creation\n\ | |
7982 | \tcatch exit - any processes, just before expiration\n\ | |
7983 | \tcatch fork - calls to fork()\n\ | |
7984 | \tcatch vfork - calls to vfork()\n\ | |
7985 | \tcatch exec - calls to exec()\n\ | |
7986 | Dynamically-linked library events may be caught:\n\ | |
7987 | \tcatch load - loads of any library\n\ | |
7988 | \tcatch load <libname> - loads of a particular library\n\ | |
7989 | \tcatch unload - unloads of any library\n\ | |
7990 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7991 | The act of your program's execution stopping may also be caught:\n\ | |
7992 | \tcatch stop\n\n\ | |
7993 | C++ exceptions may be caught:\n\ | |
7994 | \tcatch throw - all exceptions, when thrown\n\ | |
7995 | \tcatch catch - all exceptions, when caught\n\ | |
7996 | \n\ | |
7997 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7998 | after a fork or vfork is caught.\n\n\ | |
7999 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 8000 | |
c906108c | 8001 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 8002 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
8003 | Args like \"catch\" command.\n\ |
8004 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8005 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
8006 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 8007 | |
c94fdfd0 EZ |
8008 | c = add_com ("watch", class_breakpoint, watch_command, |
8009 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
8010 | A watchpoint stops execution of your program whenever the value of\n\ |
8011 | an expression changes."); | |
5ba2abeb | 8012 | set_cmd_completer (c, location_completer); |
c906108c | 8013 | |
c94fdfd0 EZ |
8014 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
8015 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
8016 | A watchpoint stops execution of your program whenever the value of\n\ |
8017 | an expression is read."); | |
5ba2abeb | 8018 | set_cmd_completer (c, location_completer); |
c906108c | 8019 | |
c94fdfd0 EZ |
8020 | c = add_com ("awatch", class_breakpoint, awatch_command, |
8021 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
8022 | A watchpoint stops execution of your program whenever the value of\n\ |
8023 | an expression is either read or written."); | |
5ba2abeb | 8024 | set_cmd_completer (c, location_completer); |
c906108c SS |
8025 | |
8026 | add_info ("watchpoints", breakpoints_info, | |
8027 | "Synonym for ``info breakpoints''."); | |
8028 | ||
8029 | ||
8030 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
8031 | (char *) &can_use_hw_watchpoints, |
8032 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
8033 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8034 | such is available. (However, any hardware watchpoints that were\n\ | |
8035 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
8036 | hardware.)", | |
c5aa993b | 8037 | &setlist); |
c906108c SS |
8038 | add_show_from_set (c, &showlist); |
8039 | ||
8040 | can_use_hw_watchpoints = 1; | |
8041 | } |