Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software | |
5 | 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" |
c906108c | 51 | |
104c1213 JM |
52 | #include "gdb-events.h" |
53 | ||
c906108c SS |
54 | /* Prototypes for local functions. */ |
55 | ||
c2c6d25f JM |
56 | static void until_break_command_continuation (struct continuation_arg *arg); |
57 | ||
a14ed312 | 58 | static void catch_command_1 (char *, int, int); |
c906108c | 59 | |
a14ed312 | 60 | static void enable_delete_command (char *, int); |
c906108c | 61 | |
a14ed312 | 62 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 63 | |
a14ed312 | 64 | static void enable_once_command (char *, int); |
c906108c | 65 | |
a14ed312 | 66 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 67 | |
a14ed312 | 68 | static void disable_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void enable_command (char *, int); |
c906108c | 71 | |
a14ed312 | 72 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 73 | |
a14ed312 | 74 | static void ignore_command (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static int breakpoint_re_set_one (PTR); |
c906108c | 77 | |
a14ed312 | 78 | static void clear_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void catch_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void handle_gnu_4_16_catch_command (char *, int, int); |
c906108c | 83 | |
a14ed312 | 84 | static struct symtabs_and_lines get_catch_sals (int); |
c906108c | 85 | |
a14ed312 | 86 | static void watch_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 89 | |
e5d66720 PS |
90 | extern void break_at_finish_command (char *, int); |
91 | extern void break_at_finish_at_depth_command (char *, int); | |
7a292a7a | 92 | |
e5d66720 | 93 | extern void tbreak_at_finish_command (char *, int); |
7a292a7a | 94 | |
a14ed312 | 95 | static void break_command_1 (char *, int, int); |
c906108c | 96 | |
a14ed312 | 97 | static void mention (struct breakpoint *); |
c906108c | 98 | |
4d28f7a8 | 99 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 100 | |
9f60f21b | 101 | static void check_duplicates (struct breakpoint *); |
c906108c | 102 | |
a14ed312 | 103 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 104 | |
a14ed312 | 105 | static void breakpoints_info (char *, int); |
c906108c | 106 | |
a14ed312 | 107 | static void breakpoint_1 (int, int); |
c906108c | 108 | |
a14ed312 | 109 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 110 | |
a14ed312 | 111 | static int breakpoint_cond_eval (PTR); |
c906108c | 112 | |
a14ed312 | 113 | static void cleanup_executing_breakpoints (PTR); |
c906108c | 114 | |
a14ed312 | 115 | static void commands_command (char *, int); |
c906108c | 116 | |
a14ed312 | 117 | static void condition_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | static int get_number_trailer (char **, int); |
c906108c | 120 | |
a14ed312 | 121 | void set_breakpoint_count (int); |
c906108c | 122 | |
c5aa993b JM |
123 | typedef enum |
124 | { | |
125 | mark_inserted, | |
126 | mark_uninserted | |
127 | } | |
128 | insertion_state_t; | |
c906108c | 129 | |
a14ed312 | 130 | static int remove_breakpoint (struct breakpoint *, insertion_state_t); |
c906108c | 131 | |
a14ed312 | 132 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
133 | |
134 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 135 | |
c5aa993b JM |
136 | typedef struct |
137 | { | |
138 | enum exception_event_kind kind; | |
b5de0fa7 | 139 | int enable_p; |
c5aa993b JM |
140 | } |
141 | args_for_catchpoint_enable; | |
c906108c | 142 | |
a14ed312 | 143 | static int watchpoint_check (PTR); |
c906108c | 144 | |
a14ed312 | 145 | static int cover_target_enable_exception_callback (PTR); |
c906108c | 146 | |
a14ed312 | 147 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 148 | |
a14ed312 | 149 | static void create_longjmp_breakpoint (char *); |
c906108c | 150 | |
1900040c MS |
151 | static void create_overlay_event_breakpoint (char *); |
152 | ||
a14ed312 | 153 | static int hw_breakpoint_used_count (void); |
c906108c | 154 | |
a14ed312 | 155 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 156 | |
a14ed312 | 157 | static void hbreak_command (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static void thbreak_command (char *, int); |
c906108c | 160 | |
a14ed312 | 161 | static void watch_command_1 (char *, int, int); |
c906108c | 162 | |
a14ed312 | 163 | static void rwatch_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void awatch_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 168 | |
a14ed312 KB |
169 | static void solib_load_unload_1 (char *hookname, |
170 | int tempflag, | |
171 | char *dll_pathname, | |
172 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 173 | |
a14ed312 KB |
174 | static void create_fork_vfork_event_catchpoint (int tempflag, |
175 | char *cond_string, | |
176 | enum bptype bp_kind); | |
7a292a7a | 177 | |
a14ed312 KB |
178 | static void break_at_finish_at_depth_command_1 (char *arg, |
179 | int flag, int from_tty); | |
7a292a7a | 180 | |
a14ed312 | 181 | static void break_at_finish_command_1 (char *arg, int flag, int from_tty); |
7a292a7a | 182 | |
a14ed312 | 183 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 188 | |
a14ed312 | 189 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 190 | |
a14ed312 | 191 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 192 | |
a14ed312 | 193 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 194 | |
e514a9d6 | 195 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
a14ed312 | 196 | static void catch_exec_command_1 (char *arg, int tempflag, int from_tty); |
e514a9d6 | 197 | #endif |
7a292a7a | 198 | |
d85310f7 MS |
199 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
200 | enum exception_event_kind ex_event, | |
201 | struct symtab_and_line *sal); | |
7a292a7a | 202 | |
d85310f7 MS |
203 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
204 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 205 | |
a14ed312 | 206 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 207 | |
a14ed312 | 208 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 209 | |
c906108c SS |
210 | /* Prototypes for exported functions. */ |
211 | ||
c906108c SS |
212 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
213 | if such is available. */ | |
214 | static int can_use_hw_watchpoints; | |
215 | ||
a14ed312 | 216 | void _initialize_breakpoint (void); |
c906108c | 217 | |
c5aa993b | 218 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 219 | |
c906108c SS |
220 | /* Are we executing breakpoint commands? */ |
221 | static int executing_breakpoint_commands; | |
222 | ||
c02f5703 MS |
223 | /* Are overlay event breakpoints enabled? */ |
224 | static int overlay_events_enabled; | |
225 | ||
c906108c SS |
226 | /* Walk the following statement or block through all breakpoints. |
227 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
228 | breakpoint. */ | |
229 | ||
5c44784c | 230 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 231 | |
5c44784c JM |
232 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
233 | for (B = breakpoint_chain; \ | |
234 | B ? (TMP=B->next, 1): 0; \ | |
235 | B = TMP) | |
c906108c SS |
236 | |
237 | /* True if SHIFT_INST_REGS defined, false otherwise. */ | |
238 | ||
239 | int must_shift_inst_regs = | |
240 | #if defined(SHIFT_INST_REGS) | |
241 | 1 | |
242 | #else | |
243 | 0 | |
244 | #endif | |
c5aa993b | 245 | ; |
c906108c SS |
246 | |
247 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ | |
248 | ||
249 | int show_breakpoint_hit_counts = 1; | |
250 | ||
251 | /* Chain of all breakpoints defined. */ | |
252 | ||
253 | struct breakpoint *breakpoint_chain; | |
254 | ||
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 | ||
323 | /* Set breakpoint count to NUM. */ | |
324 | ||
325 | void | |
fba45db2 | 326 | set_breakpoint_count (int num) |
c906108c SS |
327 | { |
328 | breakpoint_count = num; | |
329 | set_internalvar (lookup_internalvar ("bpnum"), | |
330 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
331 | } | |
332 | ||
333 | /* Used in run_command to zero the hit count when a new run starts. */ | |
334 | ||
335 | void | |
fba45db2 | 336 | clear_breakpoint_hit_counts (void) |
c906108c SS |
337 | { |
338 | struct breakpoint *b; | |
339 | ||
340 | ALL_BREAKPOINTS (b) | |
341 | b->hit_count = 0; | |
342 | } | |
343 | ||
344 | /* Default address, symtab and line to put a breakpoint at | |
345 | for "break" command with no arg. | |
346 | if default_breakpoint_valid is zero, the other three are | |
347 | not valid, and "break" with no arg is an error. | |
348 | ||
349 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
350 | ||
351 | int default_breakpoint_valid; | |
352 | CORE_ADDR default_breakpoint_address; | |
353 | struct symtab *default_breakpoint_symtab; | |
354 | int default_breakpoint_line; | |
355 | \f | |
356 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
357 | Advance *PP after the string and any trailing whitespace. | |
358 | ||
359 | Currently the string can either be a number or "$" followed by the name | |
360 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
361 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
362 | ||
363 | TRAILER is a character which can be found after the number; most | |
364 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 365 | static int |
fba45db2 | 366 | get_number_trailer (char **pp, int trailer) |
c906108c | 367 | { |
5c44784c | 368 | int retval = 0; /* default */ |
c906108c SS |
369 | char *p = *pp; |
370 | ||
371 | if (p == NULL) | |
372 | /* Empty line means refer to the last breakpoint. */ | |
373 | return breakpoint_count; | |
374 | else if (*p == '$') | |
375 | { | |
376 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 377 | to pass to lookup_internalvar(). */ |
c906108c SS |
378 | char *varname; |
379 | char *start = ++p; | |
278cd55f | 380 | struct value *val; |
c906108c SS |
381 | |
382 | while (isalnum (*p) || *p == '_') | |
383 | p++; | |
384 | varname = (char *) alloca (p - start + 1); | |
385 | strncpy (varname, start, p - start); | |
386 | varname[p - start] = '\0'; | |
387 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
388 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
389 | retval = (int) value_as_long (val); | |
390 | else | |
391 | { | |
392 | printf_filtered ("Convenience variable must have integer value.\n"); | |
393 | retval = 0; | |
394 | } | |
c906108c SS |
395 | } |
396 | else | |
397 | { | |
398 | if (*p == '-') | |
399 | ++p; | |
400 | while (*p >= '0' && *p <= '9') | |
401 | ++p; | |
402 | if (p == *pp) | |
403 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
404 | { |
405 | /* Skip non-numeric token */ | |
406 | while (*p && !isspace((int) *p)) | |
407 | ++p; | |
408 | /* Return zero, which caller must interpret as error. */ | |
409 | retval = 0; | |
410 | } | |
411 | else | |
412 | retval = atoi (*pp); | |
413 | } | |
414 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
415 | { | |
416 | /* Trailing junk: return 0 and let caller print error msg. */ | |
417 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
418 | ++p; | |
419 | retval = 0; | |
c906108c | 420 | } |
c906108c SS |
421 | while (isspace (*p)) |
422 | p++; | |
423 | *pp = p; | |
424 | return retval; | |
425 | } | |
5c44784c | 426 | |
11cf8741 | 427 | |
5c44784c JM |
428 | /* Like get_number_trailer, but don't allow a trailer. */ |
429 | int | |
fba45db2 | 430 | get_number (char **pp) |
5c44784c JM |
431 | { |
432 | return get_number_trailer (pp, '\0'); | |
433 | } | |
434 | ||
435 | /* Parse a number or a range. | |
436 | * A number will be of the form handled by get_number. | |
437 | * A range will be of the form <number1> - <number2>, and | |
438 | * will represent all the integers between number1 and number2, | |
439 | * inclusive. | |
440 | * | |
441 | * While processing a range, this fuction is called iteratively; | |
442 | * At each call it will return the next value in the range. | |
443 | * | |
444 | * At the beginning of parsing a range, the char pointer PP will | |
445 | * be advanced past <number1> and left pointing at the '-' token. | |
446 | * Subsequent calls will not advance the pointer until the range | |
447 | * is completed. The call that completes the range will advance | |
448 | * pointer PP past <number2>. | |
449 | */ | |
450 | ||
451 | int | |
fba45db2 | 452 | get_number_or_range (char **pp) |
5c44784c JM |
453 | { |
454 | static int last_retval, end_value; | |
455 | static char *end_ptr; | |
456 | static int in_range = 0; | |
457 | ||
458 | if (**pp != '-') | |
459 | { | |
460 | /* Default case: pp is pointing either to a solo number, | |
461 | or to the first number of a range. */ | |
462 | last_retval = get_number_trailer (pp, '-'); | |
463 | if (**pp == '-') | |
464 | { | |
465 | char **temp; | |
466 | ||
467 | /* This is the start of a range (<number1> - <number2>). | |
468 | Skip the '-', parse and remember the second number, | |
469 | and also remember the end of the final token. */ | |
470 | ||
471 | temp = &end_ptr; | |
472 | end_ptr = *pp + 1; | |
473 | while (isspace ((int) *end_ptr)) | |
474 | end_ptr++; /* skip white space */ | |
475 | end_value = get_number (temp); | |
476 | if (end_value < last_retval) | |
477 | { | |
478 | error ("inverted range"); | |
479 | } | |
480 | else if (end_value == last_retval) | |
481 | { | |
482 | /* degenerate range (number1 == number2). Advance the | |
483 | token pointer so that the range will be treated as a | |
484 | single number. */ | |
485 | *pp = end_ptr; | |
486 | } | |
487 | else | |
488 | in_range = 1; | |
489 | } | |
490 | } | |
491 | else if (! in_range) | |
492 | error ("negative value"); | |
493 | else | |
494 | { | |
495 | /* pp points to the '-' that betokens a range. All | |
496 | number-parsing has already been done. Return the next | |
497 | integer value (one greater than the saved previous value). | |
498 | Do not advance the token pointer 'pp' until the end of range | |
499 | is reached. */ | |
500 | ||
501 | if (++last_retval == end_value) | |
502 | { | |
503 | /* End of range reached; advance token pointer. */ | |
504 | *pp = end_ptr; | |
505 | in_range = 0; | |
506 | } | |
507 | } | |
508 | return last_retval; | |
509 | } | |
510 | ||
511 | ||
c906108c SS |
512 | \f |
513 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
514 | ||
515 | static void | |
fba45db2 | 516 | condition_command (char *arg, int from_tty) |
c906108c SS |
517 | { |
518 | register struct breakpoint *b; | |
519 | char *p; | |
520 | register int bnum; | |
521 | ||
522 | if (arg == 0) | |
523 | error_no_arg ("breakpoint number"); | |
524 | ||
525 | p = arg; | |
526 | bnum = get_number (&p); | |
5c44784c JM |
527 | if (bnum == 0) |
528 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
529 | |
530 | ALL_BREAKPOINTS (b) | |
531 | if (b->number == bnum) | |
c5aa993b JM |
532 | { |
533 | if (b->cond) | |
534 | { | |
b8c9b27d | 535 | xfree (b->cond); |
c5aa993b JM |
536 | b->cond = 0; |
537 | } | |
538 | if (b->cond_string != NULL) | |
b8c9b27d | 539 | xfree (b->cond_string); |
c906108c | 540 | |
c5aa993b JM |
541 | if (*p == 0) |
542 | { | |
543 | b->cond = 0; | |
544 | b->cond_string = NULL; | |
545 | if (from_tty) | |
546 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
547 | } | |
548 | else | |
549 | { | |
550 | arg = p; | |
551 | /* I don't know if it matters whether this is the string the user | |
552 | typed in or the decompiled expression. */ | |
553 | b->cond_string = savestring (arg, strlen (arg)); | |
554 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); | |
555 | if (*arg) | |
556 | error ("Junk at end of expression"); | |
557 | } | |
558 | breakpoints_changed (); | |
221ea385 | 559 | breakpoint_modify_event (b->number); |
c5aa993b JM |
560 | return; |
561 | } | |
c906108c SS |
562 | |
563 | error ("No breakpoint number %d.", bnum); | |
564 | } | |
565 | ||
566 | /* ARGSUSED */ | |
567 | static void | |
fba45db2 | 568 | commands_command (char *arg, int from_tty) |
c906108c SS |
569 | { |
570 | register struct breakpoint *b; | |
571 | char *p; | |
572 | register int bnum; | |
573 | struct command_line *l; | |
574 | ||
575 | /* If we allowed this, we would have problems with when to | |
576 | free the storage, if we change the commands currently | |
577 | being read from. */ | |
578 | ||
579 | if (executing_breakpoint_commands) | |
580 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
581 | ||
582 | p = arg; | |
583 | bnum = get_number (&p); | |
5c44784c | 584 | |
c906108c SS |
585 | if (p && *p) |
586 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 587 | |
c906108c SS |
588 | ALL_BREAKPOINTS (b) |
589 | if (b->number == bnum) | |
c5aa993b JM |
590 | { |
591 | char tmpbuf[128]; | |
53a5351d JM |
592 | sprintf (tmpbuf, |
593 | "Type commands for when breakpoint %d is hit, one per line.", | |
594 | bnum); | |
c5aa993b JM |
595 | l = read_command_lines (tmpbuf, from_tty); |
596 | free_command_lines (&b->commands); | |
597 | b->commands = l; | |
598 | breakpoints_changed (); | |
221ea385 | 599 | breakpoint_modify_event (b->number); |
c5aa993b JM |
600 | return; |
601 | } | |
c906108c SS |
602 | error ("No breakpoint number %d.", bnum); |
603 | } | |
604 | \f | |
605 | /* Like target_read_memory() but if breakpoints are inserted, return | |
606 | the shadow contents instead of the breakpoints themselves. | |
607 | ||
608 | Read "memory data" from whatever target or inferior we have. | |
609 | Returns zero if successful, errno value if not. EIO is used | |
610 | for address out of bounds. If breakpoints are inserted, returns | |
611 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
612 | ||
613 | int | |
fba45db2 | 614 | read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
615 | { |
616 | int status; | |
617 | struct breakpoint *b; | |
618 | CORE_ADDR bp_addr = 0; | |
619 | int bp_size = 0; | |
620 | ||
621 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
622 | /* No breakpoints on this machine. */ | |
623 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 624 | |
c906108c | 625 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
626 | { |
627 | if (b->type == bp_none) | |
53a5351d JM |
628 | warning ("reading through apparently deleted breakpoint #%d?", |
629 | b->number); | |
c5aa993b JM |
630 | |
631 | /* memory breakpoint? */ | |
632 | if (b->type == bp_watchpoint | |
633 | || b->type == bp_hardware_watchpoint | |
634 | || b->type == bp_read_watchpoint | |
635 | || b->type == bp_access_watchpoint) | |
636 | continue; | |
637 | /* bp in memory? */ | |
638 | if (!b->inserted) | |
639 | continue; | |
640 | /* Addresses and length of the part of the breakpoint that | |
641 | we need to copy. */ | |
642 | /* XXXX The m68k, sh and h8300 have different local and remote | |
643 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
644 | correctly determine the breakpoints memory address and size | |
645 | for these targets. */ | |
646 | bp_addr = b->address; | |
647 | bp_size = 0; | |
648 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
649 | continue; | |
650 | if (bp_size == 0) | |
651 | /* bp isn't valid */ | |
652 | continue; | |
653 | if (bp_addr + bp_size <= memaddr) | |
654 | /* The breakpoint is entirely before the chunk of memory we | |
655 | are reading. */ | |
656 | continue; | |
657 | if (bp_addr >= memaddr + len) | |
658 | /* The breakpoint is entirely after the chunk of memory we are | |
659 | reading. */ | |
660 | continue; | |
661 | /* Copy the breakpoint from the shadow contents, and recurse for | |
662 | the things before and after. */ | |
c906108c | 663 | { |
c5aa993b JM |
664 | /* Offset within shadow_contents. */ |
665 | int bptoffset = 0; | |
c906108c | 666 | |
c5aa993b JM |
667 | if (bp_addr < memaddr) |
668 | { | |
669 | /* Only copy the second part of the breakpoint. */ | |
670 | bp_size -= memaddr - bp_addr; | |
671 | bptoffset = memaddr - bp_addr; | |
672 | bp_addr = memaddr; | |
673 | } | |
674 | ||
675 | if (bp_addr + bp_size > memaddr + len) | |
676 | { | |
677 | /* Only copy the first part of the breakpoint. */ | |
678 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
679 | } | |
680 | ||
681 | memcpy (myaddr + bp_addr - memaddr, | |
682 | b->shadow_contents + bptoffset, bp_size); | |
683 | ||
684 | if (bp_addr > memaddr) | |
685 | { | |
686 | /* Copy the section of memory before the breakpoint. */ | |
687 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
688 | if (status != 0) | |
689 | return status; | |
690 | } | |
691 | ||
692 | if (bp_addr + bp_size < memaddr + len) | |
693 | { | |
694 | /* Copy the section of memory after the breakpoint. */ | |
d85310f7 MS |
695 | status = read_memory_nobpt (bp_addr + bp_size, |
696 | myaddr + bp_addr + bp_size - memaddr, | |
697 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
698 | if (status != 0) |
699 | return status; | |
700 | } | |
701 | return 0; | |
c906108c | 702 | } |
c5aa993b | 703 | } |
c906108c SS |
704 | /* Nothing overlaps. Just call read_memory_noerr. */ |
705 | return target_read_memory (memaddr, myaddr, len); | |
706 | } | |
c906108c | 707 | \f |
c5aa993b | 708 | |
c906108c SS |
709 | /* insert_breakpoints is used when starting or continuing the program. |
710 | remove_breakpoints is used when the program stops. | |
711 | Both return zero if successful, | |
712 | or an `errno' value if could not write the inferior. */ | |
713 | ||
714 | int | |
fba45db2 | 715 | insert_breakpoints (void) |
c906108c SS |
716 | { |
717 | register struct breakpoint *b, *temp; | |
53a5351d | 718 | int return_val = 0; /* return success code. */ |
c906108c SS |
719 | int val = 0; |
720 | int disabled_breaks = 0; | |
81d0cc19 | 721 | int hw_breakpoint_error = 0; |
c6510018 | 722 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 723 | int process_warning = 0; |
c6510018 | 724 | #endif |
c906108c SS |
725 | |
726 | static char message1[] = "Error inserting catchpoint %d:\n"; | |
727 | static char message[sizeof (message1) + 30]; | |
728 | ||
81d0cc19 GS |
729 | struct ui_file *tmp_error_stream = mem_fileopen (); |
730 | make_cleanup_ui_file_delete (tmp_error_stream); | |
731 | ||
732 | /* Explicitly mark the warning -- this will only be printed if | |
733 | there was an error. */ | |
734 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c SS |
735 | |
736 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 737 | { |
b5de0fa7 | 738 | if (b->enable_state == bp_permanent) |
c2c6d25f JM |
739 | /* Permanent breakpoints cannot be inserted or removed. */ |
740 | continue; | |
c860120c PM |
741 | if ((b->type == bp_watchpoint |
742 | || b->type == bp_hardware_watchpoint | |
743 | || b->type == bp_read_watchpoint | |
744 | || b->type == bp_access_watchpoint) && (!b->val)) | |
745 | { | |
746 | struct value *val; | |
747 | val = evaluate_expression (b->exp); | |
748 | release_value (val); | |
749 | if (VALUE_LAZY (val)) | |
750 | value_fetch_lazy (val); | |
751 | b->val = val; | |
752 | } | |
753 | if (b->type != bp_watchpoint | |
c5aa993b JM |
754 | && b->type != bp_hardware_watchpoint |
755 | && b->type != bp_read_watchpoint | |
756 | && b->type != bp_access_watchpoint | |
757 | && b->type != bp_catch_fork | |
758 | && b->type != bp_catch_vfork | |
759 | && b->type != bp_catch_exec | |
760 | && b->type != bp_catch_throw | |
761 | && b->type != bp_catch_catch | |
b5de0fa7 EZ |
762 | && b->enable_state != bp_disabled |
763 | && b->enable_state != bp_shlib_disabled | |
764 | && b->enable_state != bp_call_disabled | |
c5aa993b JM |
765 | && !b->inserted |
766 | && !b->duplicate) | |
767 | { | |
c02f5703 MS |
768 | /* "Normal" instruction breakpoint: either the standard |
769 | trap-instruction bp (bp_breakpoint), or a | |
770 | bp_hardware_breakpoint. */ | |
771 | ||
772 | /* First check to see if we have to handle an overlay. */ | |
773 | if (overlay_debugging == ovly_off | |
774 | || b->section == NULL | |
775 | || !(section_is_overlay (b->section))) | |
776 | { | |
777 | /* No overlay handling: just set the breakpoint. */ | |
778 | ||
779 | if (b->type == bp_hardware_breakpoint) | |
780 | val = target_insert_hw_breakpoint (b->address, | |
781 | b->shadow_contents); | |
782 | else | |
783 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
784 | } | |
c5aa993b JM |
785 | else |
786 | { | |
c02f5703 MS |
787 | /* This breakpoint is in an overlay section. |
788 | Shall we set a breakpoint at the LMA? */ | |
789 | if (!overlay_events_enabled) | |
790 | { | |
791 | /* Yes -- overlay event support is not active, | |
792 | so we must try to set a breakpoint at the LMA. | |
793 | This will not work for a hardware breakpoint. */ | |
794 | if (b->type == bp_hardware_breakpoint) | |
84d2ac95 | 795 | warning ("hardware breakpoint %d not supported in overlay!\n", |
c02f5703 MS |
796 | b->number); |
797 | else | |
798 | { | |
799 | CORE_ADDR addr = overlay_unmapped_address (b->address, | |
800 | b->section); | |
801 | /* Set a software (trap) breakpoint at the LMA. */ | |
802 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
803 | if (val != 0) | |
81d0cc19 GS |
804 | fprintf_unfiltered (tmp_error_stream, |
805 | "Overlay breakpoint %d failed: in ROM?", | |
806 | b->number); | |
c02f5703 MS |
807 | } |
808 | } | |
809 | /* Shall we set a breakpoint at the VMA? */ | |
810 | if (section_is_mapped (b->section)) | |
c5aa993b | 811 | { |
c02f5703 MS |
812 | /* Yes. This overlay section is mapped into memory. */ |
813 | if (b->type == bp_hardware_breakpoint) | |
814 | val = target_insert_hw_breakpoint (b->address, | |
815 | b->shadow_contents); | |
816 | else | |
c5aa993b JM |
817 | val = target_insert_breakpoint (b->address, |
818 | b->shadow_contents); | |
819 | } | |
c02f5703 MS |
820 | else |
821 | { | |
822 | /* No. This breakpoint will not be inserted. | |
823 | No error, but do not mark the bp as 'inserted'. */ | |
824 | continue; | |
825 | } | |
c5aa993b | 826 | } |
c02f5703 | 827 | |
c5aa993b JM |
828 | if (val) |
829 | { | |
830 | /* Can't set the breakpoint. */ | |
c906108c | 831 | #if defined (DISABLE_UNSETTABLE_BREAK) |
c5aa993b JM |
832 | if (DISABLE_UNSETTABLE_BREAK (b->address)) |
833 | { | |
834 | /* See also: disable_breakpoints_in_shlibs. */ | |
835 | val = 0; | |
b5de0fa7 | 836 | b->enable_state = bp_shlib_disabled; |
c5aa993b JM |
837 | if (!disabled_breaks) |
838 | { | |
81d0cc19 | 839 | fprintf_unfiltered (tmp_error_stream, |
c6510018 MS |
840 | "Cannot insert breakpoint %d.\n", |
841 | b->number); | |
81d0cc19 GS |
842 | fprintf_unfiltered (tmp_error_stream, |
843 | "Temporarily disabling shared library breakpoints:\n"); | |
c5aa993b JM |
844 | } |
845 | disabled_breaks = 1; | |
c6510018 MS |
846 | fprintf_unfiltered (tmp_error_stream, |
847 | "breakpoint #%d\n", b->number); | |
c5aa993b JM |
848 | } |
849 | else | |
c906108c | 850 | #endif |
c5aa993b | 851 | { |
c6510018 | 852 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 853 | process_warning = 1; |
c6510018 | 854 | #endif |
81d0cc19 GS |
855 | if (b->type == bp_hardware_breakpoint) |
856 | { | |
857 | hw_breakpoint_error = 1; | |
858 | fprintf_unfiltered (tmp_error_stream, | |
859 | "Cannot insert hardware breakpoint %d.\n", | |
860 | b->number); | |
861 | } | |
862 | else | |
863 | { | |
c6510018 MS |
864 | fprintf_unfiltered (tmp_error_stream, |
865 | "Cannot insert breakpoint %d.\n", | |
866 | b->number); | |
867 | fprintf_filtered (tmp_error_stream, | |
868 | "Error accessing memory address "); | |
81d0cc19 GS |
869 | print_address_numeric (b->address, 1, tmp_error_stream); |
870 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
871 | safe_strerror (val)); | |
872 | } | |
873 | ||
c5aa993b JM |
874 | } |
875 | } | |
876 | else | |
877 | b->inserted = 1; | |
53a5351d JM |
878 | |
879 | if (val) | |
880 | return_val = val; /* remember failure */ | |
c5aa993b | 881 | } |
c906108c | 882 | else if (ep_is_exception_catchpoint (b) |
b5de0fa7 EZ |
883 | && b->enable_state != bp_disabled |
884 | && b->enable_state != bp_shlib_disabled | |
885 | && b->enable_state != bp_call_disabled | |
c5aa993b JM |
886 | && !b->inserted |
887 | && !b->duplicate) | |
c906108c SS |
888 | |
889 | { | |
c5aa993b JM |
890 | /* If we get here, we must have a callback mechanism for exception |
891 | events -- with g++ style embedded label support, we insert | |
892 | ordinary breakpoints and not catchpoints. */ | |
53a5351d JM |
893 | /* Format possible error message */ |
894 | sprintf (message, message1, b->number); | |
c5aa993b JM |
895 | |
896 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
897 | if (val) | |
898 | { | |
899 | /* Couldn't set breakpoint for some reason */ | |
81d0cc19 GS |
900 | fprintf_unfiltered (tmp_error_stream, |
901 | "Cannot insert catchpoint %d; disabling it.\n", | |
902 | b->number); | |
c6510018 MS |
903 | fprintf_filtered (tmp_error_stream, |
904 | "Error accessing memory address "); | |
81d0cc19 GS |
905 | print_address_numeric (b->address, 1, tmp_error_stream); |
906 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
907 | safe_strerror (val)); | |
b5de0fa7 | 908 | b->enable_state = bp_disabled; |
c5aa993b JM |
909 | } |
910 | else | |
911 | { | |
912 | /* Bp set, now make sure callbacks are enabled */ | |
c906108c | 913 | int val; |
c5aa993b | 914 | args_for_catchpoint_enable args; |
53a5351d JM |
915 | args.kind = b->type == bp_catch_catch ? |
916 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 917 | args.enable_p = 1; |
c906108c SS |
918 | val = catch_errors (cover_target_enable_exception_callback, |
919 | &args, | |
920 | message, RETURN_MASK_ALL); | |
921 | if (val != 0 && val != -1) | |
922 | { | |
923 | b->inserted = 1; | |
924 | } | |
c5aa993b | 925 | /* Check if something went wrong; val == 0 can be ignored */ |
c906108c SS |
926 | if (val == -1) |
927 | { | |
c5aa993b | 928 | /* something went wrong */ |
81d0cc19 GS |
929 | fprintf_unfiltered (tmp_error_stream, |
930 | "Cannot insert catchpoint %d; disabling it.\n", | |
931 | b->number); | |
b5de0fa7 | 932 | b->enable_state = bp_disabled; |
c906108c | 933 | } |
c5aa993b | 934 | } |
53a5351d JM |
935 | |
936 | if (val) | |
937 | return_val = val; /* remember failure */ | |
c906108c SS |
938 | } |
939 | ||
c5aa993b JM |
940 | else if ((b->type == bp_hardware_watchpoint || |
941 | b->type == bp_read_watchpoint || | |
942 | b->type == bp_access_watchpoint) | |
b5de0fa7 EZ |
943 | && b->enable_state == bp_enabled |
944 | && b->disposition != disp_del_at_next_stop | |
c5aa993b JM |
945 | && !b->inserted |
946 | && !b->duplicate) | |
947 | { | |
948 | struct frame_info *saved_frame; | |
949 | int saved_level, within_current_scope; | |
278cd55f AC |
950 | struct value *mark = value_mark (); |
951 | struct value *v; | |
c5aa993b JM |
952 | |
953 | /* Save the current frame and level so we can restore it after | |
954 | evaluating the watchpoint expression on its own frame. */ | |
6e7f8b9c AC |
955 | saved_frame = deprecated_selected_frame; |
956 | saved_level = frame_relative_level (deprecated_selected_frame); | |
c5aa993b JM |
957 | |
958 | /* Determine if the watchpoint is within scope. */ | |
959 | if (b->exp_valid_block == NULL) | |
960 | within_current_scope = 1; | |
961 | else | |
962 | { | |
963 | struct frame_info *fi; | |
101dcfbe | 964 | fi = frame_find_by_id (b->watchpoint_frame); |
c5aa993b JM |
965 | within_current_scope = (fi != NULL); |
966 | if (within_current_scope) | |
0f7d239c | 967 | select_frame (fi); |
c5aa993b JM |
968 | } |
969 | ||
970 | if (within_current_scope) | |
971 | { | |
972 | /* Evaluate the expression and cut the chain of values | |
5c44784c JM |
973 | produced off from the value chain. |
974 | ||
975 | Make sure the value returned isn't lazy; we use | |
976 | laziness to determine what memory GDB actually needed | |
977 | in order to compute the value of the expression. */ | |
c5aa993b | 978 | v = evaluate_expression (b->exp); |
5c44784c | 979 | VALUE_CONTENTS(v); |
c5aa993b JM |
980 | value_release_to_mark (mark); |
981 | ||
982 | b->val_chain = v; | |
983 | b->inserted = 1; | |
984 | ||
985 | /* Look at each value on the value chain. */ | |
986 | for (; v; v = v->next) | |
987 | { | |
5c44784c JM |
988 | /* If it's a memory location, and GDB actually needed |
989 | its contents to evaluate the expression, then we | |
990 | must watch it. */ | |
991 | if (VALUE_LVAL (v) == lval_memory | |
992 | && ! VALUE_LAZY (v)) | |
c5aa993b | 993 | { |
2e70b7b9 MS |
994 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
995 | ||
996 | /* We only watch structs and arrays if user asked | |
997 | for it explicitly, never if they just happen to | |
998 | appear in the middle of some value chain. */ | |
999 | if (v == b->val_chain | |
1000 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
1001 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
c5aa993b | 1002 | { |
2e70b7b9 MS |
1003 | CORE_ADDR addr; |
1004 | int len, type; | |
1005 | ||
1006 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1007 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
81d0cc19 | 1008 | type = hw_write; |
2e70b7b9 MS |
1009 | if (b->type == bp_read_watchpoint) |
1010 | type = hw_read; | |
1011 | else if (b->type == bp_access_watchpoint) | |
1012 | type = hw_access; | |
1013 | ||
1014 | val = target_insert_watchpoint (addr, len, type); | |
1015 | if (val == -1) | |
1016 | { | |
1017 | /* Don't exit the loop, try to insert | |
1018 | every value on the value chain. That's | |
1019 | because we will be removing all the | |
1020 | watches below, and removing a | |
1021 | watchpoint we didn't insert could have | |
1022 | adverse effects. */ | |
1023 | b->inserted = 0; | |
1024 | } | |
1025 | val = 0; | |
c5aa993b | 1026 | } |
c5aa993b JM |
1027 | } |
1028 | } | |
1029 | /* Failure to insert a watchpoint on any memory value in the | |
1030 | value chain brings us here. */ | |
1031 | if (!b->inserted) | |
53a5351d JM |
1032 | { |
1033 | remove_breakpoint (b, mark_uninserted); | |
81d0cc19 GS |
1034 | hw_breakpoint_error = 1; |
1035 | fprintf_unfiltered (tmp_error_stream, | |
c6510018 MS |
1036 | "Could not insert hardware watchpoint %d.\n", |
1037 | b->number); | |
53a5351d JM |
1038 | val = -1; |
1039 | } | |
c5aa993b JM |
1040 | } |
1041 | else | |
1042 | { | |
c6902688 | 1043 | printf_filtered ("Hardware watchpoint %d deleted ", b->number); |
53a5351d JM |
1044 | printf_filtered ("because the program has left the block \n"); |
1045 | printf_filtered ("in which its expression is valid.\n"); | |
c5aa993b | 1046 | if (b->related_breakpoint) |
b5de0fa7 EZ |
1047 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
1048 | b->disposition = disp_del_at_next_stop; | |
c5aa993b | 1049 | } |
c906108c | 1050 | |
c5aa993b | 1051 | /* Restore the frame and level. */ |
6e7f8b9c AC |
1052 | if ((saved_frame != deprecated_selected_frame) || |
1053 | (saved_level != frame_relative_level (deprecated_selected_frame))) | |
0f7d239c | 1054 | select_frame (saved_frame); |
53a5351d JM |
1055 | |
1056 | if (val) | |
1057 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1058 | } |
1059 | else if ((b->type == bp_catch_fork | |
1060 | || b->type == bp_catch_vfork | |
1061 | || b->type == bp_catch_exec) | |
b5de0fa7 | 1062 | && b->enable_state == bp_enabled |
c5aa993b JM |
1063 | && !b->inserted |
1064 | && !b->duplicate) | |
1065 | { | |
1066 | val = -1; | |
1067 | switch (b->type) | |
1068 | { | |
1069 | case bp_catch_fork: | |
39f77062 | 1070 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1071 | break; |
1072 | case bp_catch_vfork: | |
39f77062 | 1073 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1074 | break; |
1075 | case bp_catch_exec: | |
39f77062 | 1076 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1077 | break; |
1078 | default: | |
53a5351d | 1079 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
c5aa993b JM |
1080 | break; |
1081 | } | |
1082 | if (val < 0) | |
1083 | { | |
c6510018 MS |
1084 | fprintf_unfiltered (tmp_error_stream, |
1085 | "Cannot insert catchpoint %d.", b->number); | |
c5aa993b JM |
1086 | } |
1087 | else | |
1088 | b->inserted = 1; | |
53a5351d JM |
1089 | |
1090 | if (val) | |
1091 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1092 | } |
1093 | } | |
81d0cc19 GS |
1094 | |
1095 | if (return_val) | |
1096 | { | |
1097 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1098 | message about possibly exhausted resources. */ | |
1099 | if (hw_breakpoint_error) | |
1100 | { | |
c6510018 MS |
1101 | fprintf_unfiltered (tmp_error_stream, |
1102 | "Could not insert hardware breakpoints:\n\ | |
1103 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1104 | } |
c6510018 | 1105 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1106 | if (process_warning) |
c6510018 MS |
1107 | fprintf_unfiltered (tmp_error_stream, |
1108 | "The same program may be running in another process."); | |
1109 | #endif | |
81d0cc19 GS |
1110 | target_terminal_ours_for_output (); |
1111 | error_stream (tmp_error_stream); | |
1112 | } | |
53a5351d | 1113 | return return_val; |
c906108c SS |
1114 | } |
1115 | ||
c906108c | 1116 | int |
fba45db2 | 1117 | remove_breakpoints (void) |
c906108c SS |
1118 | { |
1119 | register struct breakpoint *b; | |
1120 | int val; | |
1121 | ||
1122 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
1123 | { |
1124 | if (b->inserted) | |
1125 | { | |
1126 | val = remove_breakpoint (b, mark_uninserted); | |
1127 | if (val != 0) | |
1128 | return val; | |
1129 | } | |
1130 | } | |
c906108c SS |
1131 | return 0; |
1132 | } | |
1133 | ||
692590c1 | 1134 | int |
80ce1ecb | 1135 | remove_hw_watchpoints (void) |
692590c1 MS |
1136 | { |
1137 | register struct breakpoint *b; | |
1138 | int val; | |
1139 | ||
1140 | ALL_BREAKPOINTS (b) | |
1141 | { | |
1142 | if (b->inserted | |
1143 | && (b->type == bp_hardware_watchpoint | |
1144 | || b->type == bp_read_watchpoint | |
1145 | || b->type == bp_access_watchpoint)) | |
1146 | { | |
1147 | val = remove_breakpoint (b, mark_uninserted); | |
1148 | if (val != 0) | |
1149 | return val; | |
1150 | } | |
1151 | } | |
1152 | return 0; | |
1153 | } | |
1154 | ||
c906108c | 1155 | int |
fba45db2 | 1156 | reattach_breakpoints (int pid) |
c906108c SS |
1157 | { |
1158 | register struct breakpoint *b; | |
1159 | int val; | |
ce696e05 | 1160 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1161 | |
ce696e05 KB |
1162 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1163 | inferior_ptid = pid_to_ptid (pid); | |
c906108c | 1164 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1165 | { |
1166 | if (b->inserted) | |
1167 | { | |
1168 | remove_breakpoint (b, mark_inserted); | |
1169 | if (b->type == bp_hardware_breakpoint) | |
1170 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
1171 | else | |
1172 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
1173 | if (val != 0) | |
1174 | { | |
ce696e05 | 1175 | do_cleanups (old_chain); |
c5aa993b JM |
1176 | return val; |
1177 | } | |
1178 | } | |
1179 | } | |
ce696e05 | 1180 | do_cleanups (old_chain); |
c906108c SS |
1181 | return 0; |
1182 | } | |
1183 | ||
1184 | void | |
fba45db2 | 1185 | update_breakpoints_after_exec (void) |
c906108c | 1186 | { |
c5aa993b JM |
1187 | struct breakpoint *b; |
1188 | struct breakpoint *temp; | |
c906108c SS |
1189 | |
1190 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1191 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1192 | shadow is NOT valid after an exec()! */ | |
1193 | mark_breakpoints_out (); | |
1194 | ||
1195 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1196 | { |
1197 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1198 | if (b->type == bp_shlib_event) | |
1199 | { | |
1200 | delete_breakpoint (b); | |
1201 | continue; | |
1202 | } | |
c906108c | 1203 | |
1900040c MS |
1204 | /* Thread event breakpoints must be set anew after an exec(), |
1205 | as must overlay event breakpoints. */ | |
1206 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1207 | { |
1208 | delete_breakpoint (b); | |
1209 | continue; | |
1210 | } | |
1211 | ||
c5aa993b JM |
1212 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1213 | if (b->type == bp_step_resume) | |
1214 | { | |
1215 | delete_breakpoint (b); | |
1216 | continue; | |
1217 | } | |
1218 | ||
1219 | /* Ditto the sigtramp handler breakpoints. */ | |
1220 | if (b->type == bp_through_sigtramp) | |
1221 | { | |
1222 | delete_breakpoint (b); | |
1223 | continue; | |
1224 | } | |
1225 | ||
1226 | /* Ditto the exception-handling catchpoints. */ | |
1227 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1228 | { | |
1229 | delete_breakpoint (b); | |
1230 | continue; | |
1231 | } | |
1232 | ||
1233 | /* Don't delete an exec catchpoint, because else the inferior | |
1234 | won't stop when it ought! | |
1235 | ||
1236 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1237 | on this target, we may not be able to stop when the vfork is |
1238 | seen, but only when the subsequent exec is seen. (And because | |
1239 | deleting fork catchpoints here but not vfork catchpoints will | |
1240 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1241 | |
1242 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1243 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1244 | automagically. Certainly on HP-UX that's true. |
1245 | ||
1246 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
1247 | valid code address on some platforms (like the mn10200 and | |
1248 | mn10300 simulators). We shouldn't assign any special | |
1249 | interpretation to a breakpoint with a zero address. And in | |
1250 | fact, GDB doesn't --- I can't see what that comment above is | |
1251 | talking about. As far as I can tell, setting the address of a | |
1252 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero | |
1253 | is meaningless, since those are implemented with HP-UX kernel | |
1254 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1255 | if ((b->type == bp_catch_exec) || |
1256 | (b->type == bp_catch_vfork) || | |
1257 | (b->type == bp_catch_fork)) | |
1258 | { | |
1259 | b->address = (CORE_ADDR) NULL; | |
1260 | continue; | |
1261 | } | |
1262 | ||
1263 | /* bp_finish is a special case. The only way we ought to be able | |
1264 | to see one of these when an exec() has happened, is if the user | |
1265 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1266 | carries them to the call-site of the current callee, by setting | |
1267 | a temporary bp there and resuming. But in this case, the finish | |
1268 | will carry them entirely through the vfork & exec. | |
1269 | ||
1270 | We don't want to allow a bp_finish to remain inserted now. But | |
1271 | we can't safely delete it, 'cause finish_command has a handle to | |
1272 | the bp on a bpstat, and will later want to delete it. There's a | |
1273 | chance (and I've seen it happen) that if we delete the bp_finish | |
1274 | here, that its storage will get reused by the time finish_command | |
1275 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1276 | We really must allow finish_command to delete a bp_finish. | |
1277 | ||
53a5351d JM |
1278 | In the absense of a general solution for the "how do we know |
1279 | it's safe to delete something others may have handles to?" | |
1280 | problem, what we'll do here is just uninsert the bp_finish, and | |
1281 | let finish_command delete it. | |
1282 | ||
1283 | (We know the bp_finish is "doomed" in the sense that it's | |
1284 | momentary, and will be deleted as soon as finish_command sees | |
1285 | the inferior stopped. So it doesn't matter that the bp's | |
1286 | address is probably bogus in the new a.out, unlike e.g., the | |
1287 | solib breakpoints.) */ | |
c5aa993b | 1288 | |
c5aa993b JM |
1289 | if (b->type == bp_finish) |
1290 | { | |
1291 | continue; | |
1292 | } | |
1293 | ||
1294 | /* Without a symbolic address, we have little hope of the | |
1295 | pre-exec() address meaning the same thing in the post-exec() | |
1296 | a.out. */ | |
1297 | if (b->addr_string == NULL) | |
1298 | { | |
1299 | delete_breakpoint (b); | |
1300 | continue; | |
1301 | } | |
1302 | ||
1303 | /* If this breakpoint has survived the above battery of checks, then | |
1304 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1305 | to a target address, rather than reusing the old evaluation. |
1306 | ||
1307 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1308 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1309 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1310 | the breakpoint's address from scratch, or deletes it if it can't. | |
1311 | So I think this assignment could be deleted without effect. */ | |
c5aa993b JM |
1312 | b->address = (CORE_ADDR) NULL; |
1313 | } | |
1900040c MS |
1314 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1315 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1316 | } |
1317 | ||
1318 | int | |
fba45db2 | 1319 | detach_breakpoints (int pid) |
c906108c SS |
1320 | { |
1321 | register struct breakpoint *b; | |
1322 | int val; | |
ce696e05 | 1323 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1324 | |
39f77062 KB |
1325 | if (pid == PIDGET (inferior_ptid)) |
1326 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1327 | |
ce696e05 KB |
1328 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1329 | inferior_ptid = pid_to_ptid (pid); | |
c906108c | 1330 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1331 | { |
1332 | if (b->inserted) | |
1333 | { | |
1334 | val = remove_breakpoint (b, mark_inserted); | |
1335 | if (val != 0) | |
1336 | { | |
ce696e05 | 1337 | do_cleanups (old_chain); |
c5aa993b JM |
1338 | return val; |
1339 | } | |
1340 | } | |
1341 | } | |
ce696e05 | 1342 | do_cleanups (old_chain); |
c906108c SS |
1343 | return 0; |
1344 | } | |
1345 | ||
1346 | static int | |
fba45db2 | 1347 | remove_breakpoint (struct breakpoint *b, insertion_state_t is) |
c906108c SS |
1348 | { |
1349 | int val; | |
c5aa993b | 1350 | |
b5de0fa7 | 1351 | if (b->enable_state == bp_permanent) |
c2c6d25f JM |
1352 | /* Permanent breakpoints cannot be inserted or removed. */ |
1353 | return 0; | |
1354 | ||
c906108c | 1355 | if (b->type == bp_none) |
53a5351d JM |
1356 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
1357 | b->number); | |
c906108c SS |
1358 | |
1359 | if (b->type != bp_watchpoint | |
1360 | && b->type != bp_hardware_watchpoint | |
1361 | && b->type != bp_read_watchpoint | |
1362 | && b->type != bp_access_watchpoint | |
1363 | && b->type != bp_catch_fork | |
1364 | && b->type != bp_catch_vfork | |
1365 | && b->type != bp_catch_exec | |
1366 | && b->type != bp_catch_catch | |
1367 | && b->type != bp_catch_throw) | |
c906108c | 1368 | { |
c02f5703 MS |
1369 | /* "Normal" instruction breakpoint: either the standard |
1370 | trap-instruction bp (bp_breakpoint), or a | |
1371 | bp_hardware_breakpoint. */ | |
1372 | ||
1373 | /* First check to see if we have to handle an overlay. */ | |
1374 | if (overlay_debugging == ovly_off | |
1375 | || b->section == NULL | |
1376 | || !(section_is_overlay (b->section))) | |
1377 | { | |
1378 | /* No overlay handling: just remove the breakpoint. */ | |
1379 | ||
1380 | if (b->type == bp_hardware_breakpoint) | |
1381 | val = target_remove_hw_breakpoint (b->address, | |
1382 | b->shadow_contents); | |
1383 | else | |
1384 | val = target_remove_breakpoint (b->address, b->shadow_contents); | |
1385 | } | |
c906108c SS |
1386 | else |
1387 | { | |
c02f5703 MS |
1388 | /* This breakpoint is in an overlay section. |
1389 | Did we set a breakpoint at the LMA? */ | |
1390 | if (!overlay_events_enabled) | |
1391 | { | |
1392 | /* Yes -- overlay event support is not active, so we | |
1393 | should have set a breakpoint at the LMA. Remove it. | |
1394 | */ | |
1395 | CORE_ADDR addr = overlay_unmapped_address (b->address, | |
1396 | b->section); | |
1397 | /* Ignore any failures: if the LMA is in ROM, we will | |
1398 | have already warned when we failed to insert it. */ | |
1399 | if (b->type != bp_hardware_breakpoint) | |
1400 | target_remove_hw_breakpoint (addr, b->shadow_contents); | |
1401 | else | |
1402 | target_remove_breakpoint (addr, b->shadow_contents); | |
1403 | } | |
1404 | /* Did we set a breakpoint at the VMA? | |
1405 | If so, we will have marked the breakpoint 'inserted'. */ | |
1406 | if (b->inserted) | |
c906108c | 1407 | { |
c02f5703 MS |
1408 | /* Yes -- remove it. Previously we did not bother to |
1409 | remove the breakpoint if the section had been | |
1410 | unmapped, but let's not rely on that being safe. We | |
1411 | don't know what the overlay manager might do. */ | |
1412 | if (b->type == bp_hardware_breakpoint) | |
1413 | val = target_remove_hw_breakpoint (b->address, | |
1414 | b->shadow_contents); | |
1415 | else | |
c5aa993b | 1416 | val = target_remove_breakpoint (b->address, |
c906108c SS |
1417 | b->shadow_contents); |
1418 | } | |
c02f5703 MS |
1419 | else |
1420 | { | |
1421 | /* No -- not inserted, so no need to remove. No error. */ | |
1422 | val = 0; | |
1423 | } | |
c906108c SS |
1424 | } |
1425 | if (val) | |
1426 | return val; | |
1427 | b->inserted = (is == mark_inserted); | |
1428 | } | |
1429 | else if ((b->type == bp_hardware_watchpoint || | |
c5aa993b JM |
1430 | b->type == bp_read_watchpoint || |
1431 | b->type == bp_access_watchpoint) | |
b5de0fa7 | 1432 | && b->enable_state == bp_enabled |
c5aa993b | 1433 | && !b->duplicate) |
c906108c | 1434 | { |
278cd55f AC |
1435 | struct value *v; |
1436 | struct value *n; | |
c5aa993b | 1437 | |
c906108c SS |
1438 | b->inserted = (is == mark_inserted); |
1439 | /* Walk down the saved value chain. */ | |
1440 | for (v = b->val_chain; v; v = v->next) | |
1441 | { | |
1442 | /* For each memory reference remove the watchpoint | |
1443 | at that address. */ | |
5c44784c JM |
1444 | if (VALUE_LVAL (v) == lval_memory |
1445 | && ! VALUE_LAZY (v)) | |
c906108c | 1446 | { |
2e70b7b9 MS |
1447 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1448 | ||
1449 | if (v == b->val_chain | |
1450 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
1451 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1452 | { | |
1453 | CORE_ADDR addr; | |
1454 | int len, type; | |
1455 | ||
1456 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1457 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1458 | type = hw_write; | |
1459 | if (b->type == bp_read_watchpoint) | |
1460 | type = hw_read; | |
1461 | else if (b->type == bp_access_watchpoint) | |
1462 | type = hw_access; | |
1463 | ||
1464 | val = target_remove_watchpoint (addr, len, type); | |
1465 | if (val == -1) | |
1466 | b->inserted = 1; | |
1467 | val = 0; | |
1468 | } | |
c906108c SS |
1469 | } |
1470 | } | |
1471 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
1472 | if ((is == mark_uninserted) && (b->inserted)) | |
53a5351d | 1473 | warning ("Could not remove hardware watchpoint %d.", |
c906108c | 1474 | b->number); |
c5aa993b | 1475 | |
c906108c | 1476 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1477 | the next time the watchpoint is inserted. */ |
c906108c SS |
1478 | for (v = b->val_chain; v; v = n) |
1479 | { | |
1480 | n = v->next; | |
1481 | value_free (v); | |
1482 | } | |
1483 | b->val_chain = NULL; | |
1484 | } | |
1485 | else if ((b->type == bp_catch_fork || | |
c5aa993b JM |
1486 | b->type == bp_catch_vfork || |
1487 | b->type == bp_catch_exec) | |
b5de0fa7 | 1488 | && b->enable_state == bp_enabled |
c5aa993b | 1489 | && !b->duplicate) |
c906108c SS |
1490 | { |
1491 | val = -1; | |
1492 | switch (b->type) | |
c5aa993b JM |
1493 | { |
1494 | case bp_catch_fork: | |
39f77062 | 1495 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1496 | break; |
1497 | case bp_catch_vfork: | |
39f77062 | 1498 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1499 | break; |
1500 | case bp_catch_exec: | |
39f77062 | 1501 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1502 | break; |
ac9a91a7 | 1503 | default: |
53a5351d | 1504 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1505 | break; |
c5aa993b | 1506 | } |
c906108c SS |
1507 | if (val) |
1508 | return val; | |
1509 | b->inserted = (is == mark_inserted); | |
1510 | } | |
1511 | else if ((b->type == bp_catch_catch || | |
c5aa993b | 1512 | b->type == bp_catch_throw) |
b5de0fa7 | 1513 | && b->enable_state == bp_enabled |
c5aa993b | 1514 | && !b->duplicate) |
c906108c SS |
1515 | { |
1516 | ||
c5aa993b | 1517 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1518 | if (val) |
c5aa993b | 1519 | return val; |
c906108c SS |
1520 | b->inserted = (is == mark_inserted); |
1521 | } | |
1522 | else if (ep_is_exception_catchpoint (b) | |
c5aa993b | 1523 | && b->inserted /* sometimes previous insert doesn't happen */ |
b5de0fa7 | 1524 | && b->enable_state == bp_enabled |
c5aa993b | 1525 | && !b->duplicate) |
c906108c SS |
1526 | { |
1527 | ||
c5aa993b | 1528 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1529 | if (val) |
c5aa993b JM |
1530 | return val; |
1531 | ||
c906108c SS |
1532 | b->inserted = (is == mark_inserted); |
1533 | } | |
1534 | ||
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | /* Clear the "inserted" flag in all breakpoints. */ | |
1539 | ||
1540 | void | |
fba45db2 | 1541 | mark_breakpoints_out (void) |
c906108c SS |
1542 | { |
1543 | register struct breakpoint *b; | |
1544 | ||
1545 | ALL_BREAKPOINTS (b) | |
1546 | b->inserted = 0; | |
1547 | } | |
1548 | ||
53a5351d JM |
1549 | /* Clear the "inserted" flag in all breakpoints and delete any |
1550 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1551 | |
1552 | Plus other such housekeeping that has to be done for breakpoints | |
1553 | between runs. | |
1554 | ||
53a5351d JM |
1555 | Note: this function gets called at the end of a run (by |
1556 | generic_mourn_inferior) and when a run begins (by | |
1557 | init_wait_for_inferior). */ | |
c906108c SS |
1558 | |
1559 | ||
1560 | ||
1561 | void | |
fba45db2 | 1562 | breakpoint_init_inferior (enum inf_context context) |
c906108c SS |
1563 | { |
1564 | register struct breakpoint *b, *temp; | |
1565 | static int warning_needed = 0; | |
1566 | ||
1567 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1568 | { |
1569 | b->inserted = 0; | |
c906108c | 1570 | |
c5aa993b JM |
1571 | switch (b->type) |
1572 | { | |
1573 | case bp_call_dummy: | |
1574 | case bp_watchpoint_scope: | |
c906108c | 1575 | |
c5aa993b JM |
1576 | /* If the call dummy breakpoint is at the entry point it will |
1577 | cause problems when the inferior is rerun, so we better | |
1578 | get rid of it. | |
c906108c | 1579 | |
c5aa993b JM |
1580 | Also get rid of scope breakpoints. */ |
1581 | delete_breakpoint (b); | |
1582 | break; | |
c906108c | 1583 | |
c5aa993b JM |
1584 | case bp_watchpoint: |
1585 | case bp_hardware_watchpoint: | |
1586 | case bp_read_watchpoint: | |
1587 | case bp_access_watchpoint: | |
c906108c | 1588 | |
c5aa993b JM |
1589 | /* Likewise for watchpoints on local expressions. */ |
1590 | if (b->exp_valid_block != NULL) | |
1591 | delete_breakpoint (b); | |
c860120c PM |
1592 | if (context == inf_starting) |
1593 | { | |
1594 | /* Reset val field to force reread of starting value | |
1595 | in insert_breakpoints. */ | |
1596 | if (b->val) | |
1597 | value_free (b->val); | |
1598 | b->val = NULL; | |
1599 | } | |
c5aa993b JM |
1600 | break; |
1601 | default: | |
1602 | /* Likewise for exception catchpoints in dynamic-linked | |
1603 | executables where required */ | |
1604 | if (ep_is_exception_catchpoint (b) && | |
1605 | exception_catchpoints_are_fragile) | |
1606 | { | |
1607 | warning_needed = 1; | |
c906108c | 1608 | delete_breakpoint (b); |
c5aa993b JM |
1609 | } |
1610 | break; | |
1611 | } | |
1612 | } | |
c906108c SS |
1613 | |
1614 | if (exception_catchpoints_are_fragile) | |
1615 | exception_support_initialized = 0; | |
1616 | ||
c5aa993b | 1617 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1618 | if (warning_needed && (context != inf_exited)) |
1619 | { | |
53a5351d JM |
1620 | warning ("Exception catchpoints from last run were deleted."); |
1621 | warning ("You must reinsert them explicitly."); | |
c906108c | 1622 | warning_needed = 0; |
c5aa993b | 1623 | } |
c906108c SS |
1624 | } |
1625 | ||
c2c6d25f JM |
1626 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1627 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1628 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1629 | permanent breakpoint. | |
1630 | - When continuing from a location with an ordinary breakpoint, we | |
1631 | actually single step once before calling insert_breakpoints. | |
1632 | - When continuing from a localion with a permanent breakpoint, we | |
1633 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1634 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1635 | |
c2c6d25f | 1636 | enum breakpoint_here |
fba45db2 | 1637 | breakpoint_here_p (CORE_ADDR pc) |
c906108c SS |
1638 | { |
1639 | register struct breakpoint *b; | |
c2c6d25f | 1640 | int any_breakpoint_here = 0; |
c906108c SS |
1641 | |
1642 | ALL_BREAKPOINTS (b) | |
b5de0fa7 EZ |
1643 | if ((b->enable_state == bp_enabled |
1644 | || b->enable_state == bp_permanent) | |
c906108c | 1645 | && b->address == pc) /* bp is enabled and matches pc */ |
c2c6d25f | 1646 | { |
9f04af04 MS |
1647 | if (overlay_debugging |
1648 | && section_is_overlay (b->section) | |
1649 | && !section_is_mapped (b->section)) | |
c2c6d25f | 1650 | continue; /* unmapped overlay -- can't be a match */ |
b5de0fa7 | 1651 | else if (b->enable_state == bp_permanent) |
c2c6d25f JM |
1652 | return permanent_breakpoint_here; |
1653 | else | |
1654 | any_breakpoint_here = 1; | |
1655 | } | |
c906108c | 1656 | |
c2c6d25f | 1657 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1658 | } |
1659 | ||
c2c6d25f | 1660 | |
53a5351d JM |
1661 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1662 | but it only returns true if there is actually a breakpoint inserted | |
1663 | at PC. */ | |
c906108c SS |
1664 | |
1665 | int | |
fba45db2 | 1666 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c SS |
1667 | { |
1668 | register struct breakpoint *b; | |
1669 | ||
1670 | ALL_BREAKPOINTS (b) | |
1671 | if (b->inserted | |
1672 | && b->address == pc) /* bp is inserted and matches pc */ | |
c5aa993b | 1673 | { |
9f04af04 MS |
1674 | if (overlay_debugging |
1675 | && section_is_overlay (b->section) | |
1676 | && !section_is_mapped (b->section)) | |
c5aa993b JM |
1677 | continue; /* unmapped overlay -- can't be a match */ |
1678 | else | |
1679 | return 1; | |
1680 | } | |
c906108c SS |
1681 | |
1682 | return 0; | |
1683 | } | |
1684 | ||
53a5351d | 1685 | /* Return nonzero if FRAME is a dummy frame. We can't use |
ae45cd16 AC |
1686 | DEPRECATED_PC_IN_CALL_DUMMY because figuring out the saved SP would |
1687 | take too much time, at least using get_saved_register on the 68k. | |
1688 | This means that for this function to work right a port must use the | |
53a5351d | 1689 | bp_call_dummy breakpoint. */ |
c906108c SS |
1690 | |
1691 | int | |
bf1e52be | 1692 | deprecated_frame_in_dummy (struct frame_info *frame) |
c906108c | 1693 | { |
c906108c SS |
1694 | struct breakpoint *b; |
1695 | ||
c5aa993b | 1696 | if (!CALL_DUMMY_P) |
7a292a7a SS |
1697 | return 0; |
1698 | ||
0225421b | 1699 | /* This function is used by two files: get_frame_type(), after first |
07555a72 AC |
1700 | checking that !DEPRECATED_USE_GENERIC_DUMMY_FRAMES; and |
1701 | sparc-tdep.c, which doesn't yet use generic dummy frames anyway. */ | |
1702 | gdb_assert (!DEPRECATED_USE_GENERIC_DUMMY_FRAMES); | |
c5aa993b | 1703 | |
c906108c | 1704 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1705 | { |
1706 | if (b->type == bp_call_dummy | |
1707 | && b->frame == frame->frame | |
1708 | /* We need to check the PC as well as the frame on the sparc, | |
1709 | for signals.exp in the testsuite. */ | |
1710 | && (frame->pc | |
1711 | >= (b->address | |
1712 | - SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE)) | |
1713 | && frame->pc <= b->address) | |
1714 | return 1; | |
1715 | } | |
c906108c SS |
1716 | return 0; |
1717 | } | |
1718 | ||
2c8f79c2 MS |
1719 | /* breakpoint_thread_match (PC, PID) returns true if the breakpoint at |
1720 | PC is valid for process/thread PID. */ | |
c906108c SS |
1721 | |
1722 | int | |
39f77062 | 1723 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c SS |
1724 | { |
1725 | struct breakpoint *b; | |
1726 | int thread; | |
1727 | ||
39f77062 | 1728 | thread = pid_to_thread_id (ptid); |
c906108c SS |
1729 | |
1730 | ALL_BREAKPOINTS (b) | |
b5de0fa7 EZ |
1731 | if (b->enable_state != bp_disabled |
1732 | && b->enable_state != bp_shlib_disabled | |
1733 | && b->enable_state != bp_call_disabled | |
c906108c SS |
1734 | && b->address == pc |
1735 | && (b->thread == -1 || b->thread == thread)) | |
c5aa993b | 1736 | { |
9f04af04 MS |
1737 | if (overlay_debugging |
1738 | && section_is_overlay (b->section) | |
1739 | && !section_is_mapped (b->section)) | |
c5aa993b JM |
1740 | continue; /* unmapped overlay -- can't be a match */ |
1741 | else | |
1742 | return 1; | |
1743 | } | |
c906108c SS |
1744 | |
1745 | return 0; | |
1746 | } | |
c906108c | 1747 | \f |
c5aa993b | 1748 | |
c906108c SS |
1749 | /* bpstat stuff. External routines' interfaces are documented |
1750 | in breakpoint.h. */ | |
1751 | ||
1752 | int | |
fba45db2 | 1753 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1754 | { |
1755 | return | |
1756 | (ep->type == bp_catch_load) | |
1757 | || (ep->type == bp_catch_unload) | |
1758 | || (ep->type == bp_catch_fork) | |
1759 | || (ep->type == bp_catch_vfork) | |
1760 | || (ep->type == bp_catch_exec) | |
1761 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1762 | || (ep->type == bp_catch_throw); |
c906108c | 1763 | |
c5aa993b | 1764 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1765 | } |
c5aa993b | 1766 | |
c906108c | 1767 | int |
fba45db2 | 1768 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1769 | { |
1770 | return | |
1771 | (ep->type == bp_catch_load) | |
d85310f7 | 1772 | || (ep->type == bp_catch_unload); |
c906108c SS |
1773 | } |
1774 | ||
1775 | int | |
fba45db2 | 1776 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1777 | { |
1778 | return | |
1779 | (ep->type == bp_catch_catch) | |
d85310f7 | 1780 | || (ep->type == bp_catch_throw); |
c906108c SS |
1781 | } |
1782 | ||
1783 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1784 | Also free any storage that is part of a bpstat. */ | |
1785 | ||
1786 | void | |
fba45db2 | 1787 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1788 | { |
1789 | bpstat p; | |
1790 | bpstat q; | |
1791 | ||
1792 | if (bsp == 0) | |
1793 | return; | |
1794 | p = *bsp; | |
1795 | while (p != NULL) | |
1796 | { | |
1797 | q = p->next; | |
1798 | if (p->old_val != NULL) | |
1799 | value_free (p->old_val); | |
c2b8ed2c | 1800 | free_command_lines (&p->commands); |
b8c9b27d | 1801 | xfree (p); |
c906108c SS |
1802 | p = q; |
1803 | } | |
1804 | *bsp = NULL; | |
1805 | } | |
1806 | ||
1807 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1808 | is part of the bpstat is copied as well. */ | |
1809 | ||
1810 | bpstat | |
fba45db2 | 1811 | bpstat_copy (bpstat bs) |
c906108c SS |
1812 | { |
1813 | bpstat p = NULL; | |
1814 | bpstat tmp; | |
1815 | bpstat retval = NULL; | |
1816 | ||
1817 | if (bs == NULL) | |
1818 | return bs; | |
1819 | ||
1820 | for (; bs != NULL; bs = bs->next) | |
1821 | { | |
1822 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1823 | memcpy (tmp, bs, sizeof (*tmp)); | |
1824 | if (p == NULL) | |
1825 | /* This is the first thing in the chain. */ | |
1826 | retval = tmp; | |
1827 | else | |
1828 | p->next = tmp; | |
1829 | p = tmp; | |
1830 | } | |
1831 | p->next = NULL; | |
1832 | return retval; | |
1833 | } | |
1834 | ||
1835 | /* Find the bpstat associated with this breakpoint */ | |
1836 | ||
1837 | bpstat | |
fba45db2 | 1838 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1839 | { |
c5aa993b JM |
1840 | if (bsp == NULL) |
1841 | return NULL; | |
c906108c | 1842 | |
c5aa993b JM |
1843 | for (; bsp != NULL; bsp = bsp->next) |
1844 | { | |
1845 | if (bsp->breakpoint_at == breakpoint) | |
1846 | return bsp; | |
1847 | } | |
c906108c SS |
1848 | return NULL; |
1849 | } | |
1850 | ||
1851 | /* Find a step_resume breakpoint associated with this bpstat. | |
1852 | (If there are multiple step_resume bp's on the list, this function | |
1853 | will arbitrarily pick one.) | |
1854 | ||
1855 | It is an error to use this function if BPSTAT doesn't contain a | |
1856 | step_resume breakpoint. | |
1857 | ||
1858 | See wait_for_inferior's use of this function. */ | |
1859 | struct breakpoint * | |
fba45db2 | 1860 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1861 | { |
8601f500 MS |
1862 | int current_thread; |
1863 | ||
c906108c SS |
1864 | if (bsp == NULL) |
1865 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1866 | ||
8601f500 MS |
1867 | current_thread = pid_to_thread_id (inferior_ptid); |
1868 | ||
c906108c SS |
1869 | for (; bsp != NULL; bsp = bsp->next) |
1870 | { | |
1871 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1872 | (bsp->breakpoint_at->type == bp_step_resume) && |
1873 | (bsp->breakpoint_at->thread == current_thread || | |
1874 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1875 | return bsp->breakpoint_at; |
c906108c SS |
1876 | } |
1877 | ||
1878 | error ("Internal error (no step_resume breakpoint found)"); | |
1879 | } | |
1880 | ||
1881 | ||
1882 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1883 | at. *BSP upon return is a bpstat which points to the remaining | |
1884 | breakpoints stopped at (but which is not guaranteed to be good for | |
1885 | anything but further calls to bpstat_num). | |
1886 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1887 | ||
1888 | int | |
fba45db2 | 1889 | bpstat_num (bpstat *bsp) |
c906108c SS |
1890 | { |
1891 | struct breakpoint *b; | |
1892 | ||
1893 | if ((*bsp) == NULL) | |
1894 | return 0; /* No more breakpoint values */ | |
1895 | else | |
1896 | { | |
1897 | b = (*bsp)->breakpoint_at; | |
1898 | *bsp = (*bsp)->next; | |
1899 | if (b == NULL) | |
1900 | return -1; /* breakpoint that's been deleted since */ | |
1901 | else | |
c5aa993b | 1902 | return b->number; /* We have its number */ |
c906108c SS |
1903 | } |
1904 | } | |
1905 | ||
1906 | /* Modify BS so that the actions will not be performed. */ | |
1907 | ||
1908 | void | |
fba45db2 | 1909 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1910 | { |
1911 | for (; bs != NULL; bs = bs->next) | |
1912 | { | |
c2b8ed2c | 1913 | free_command_lines (&bs->commands); |
c906108c SS |
1914 | if (bs->old_val != NULL) |
1915 | { | |
1916 | value_free (bs->old_val); | |
1917 | bs->old_val = NULL; | |
1918 | } | |
1919 | } | |
1920 | } | |
1921 | ||
1922 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1923 | /* ARGSUSED */ | |
1924 | static void | |
fba45db2 | 1925 | cleanup_executing_breakpoints (PTR ignore) |
c906108c SS |
1926 | { |
1927 | executing_breakpoint_commands = 0; | |
1928 | } | |
1929 | ||
1930 | /* Execute all the commands associated with all the breakpoints at this | |
1931 | location. Any of these commands could cause the process to proceed | |
1932 | beyond this point, etc. We look out for such changes by checking | |
1933 | the global "breakpoint_proceeded" after each command. */ | |
1934 | ||
1935 | void | |
fba45db2 | 1936 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1937 | { |
1938 | bpstat bs; | |
1939 | struct cleanup *old_chain; | |
1940 | struct command_line *cmd; | |
1941 | ||
1942 | /* Avoid endless recursion if a `source' command is contained | |
1943 | in bs->commands. */ | |
1944 | if (executing_breakpoint_commands) | |
1945 | return; | |
1946 | ||
1947 | executing_breakpoint_commands = 1; | |
1948 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1949 | ||
1950 | top: | |
1951 | /* Note that (as of this writing), our callers all appear to | |
1952 | be passing us the address of global stop_bpstat. And, if | |
1953 | our calls to execute_control_command cause the inferior to | |
1954 | proceed, that global (and hence, *bsp) will change. | |
1955 | ||
1956 | We must be careful to not touch *bsp unless the inferior | |
1957 | has not proceeded. */ | |
1958 | ||
1959 | /* This pointer will iterate over the list of bpstat's. */ | |
1960 | bs = *bsp; | |
1961 | ||
1962 | breakpoint_proceeded = 0; | |
1963 | for (; bs != NULL; bs = bs->next) | |
1964 | { | |
1965 | cmd = bs->commands; | |
1966 | while (cmd != NULL) | |
1967 | { | |
1968 | execute_control_command (cmd); | |
1969 | ||
1970 | if (breakpoint_proceeded) | |
1971 | break; | |
1972 | else | |
1973 | cmd = cmd->next; | |
1974 | } | |
1975 | if (breakpoint_proceeded) | |
1976 | /* The inferior is proceeded by the command; bomb out now. | |
1977 | The bpstat chain has been blown away by wait_for_inferior. | |
1978 | But since execution has stopped again, there is a new bpstat | |
1979 | to look at, so start over. */ | |
1980 | goto top; | |
1981 | else | |
c2b8ed2c | 1982 | free_command_lines (&bs->commands); |
c906108c | 1983 | } |
c2b8ed2c | 1984 | do_cleanups (old_chain); |
c906108c SS |
1985 | } |
1986 | ||
e514a9d6 | 1987 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 1988 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
1989 | by having it set different print_it values. |
1990 | ||
1991 | Current scheme: When we stop, bpstat_print() is called. It loops | |
1992 | through the bpstat list of things causing this stop, calling the | |
1993 | print_bp_stop_message function on each one. The behavior of the | |
1994 | print_bp_stop_message function depends on the print_it field of | |
1995 | bpstat. If such field so indicates, call this function here. | |
1996 | ||
1997 | Return values from this routine (ultimately used by bpstat_print() | |
1998 | and normal_stop() to decide what to do): | |
1999 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2000 | don't print anything else. | |
2001 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2002 | that something to be followed by a location. | |
2003 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2004 | that something to be followed by a location. | |
2005 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2006 | analysis. */ | |
c906108c | 2007 | |
917317f4 | 2008 | static enum print_stop_action |
fba45db2 | 2009 | print_it_typical (bpstat bs) |
c906108c | 2010 | { |
8b93c638 JM |
2011 | struct cleanup *old_chain; |
2012 | struct ui_stream *stb; | |
2013 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2014 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2015 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2016 | which has since been deleted. */ | |
e514a9d6 | 2017 | if (bs->breakpoint_at == NULL) |
917317f4 | 2018 | return PRINT_UNKNOWN; |
c906108c | 2019 | |
e514a9d6 | 2020 | switch (bs->breakpoint_at->type) |
c906108c | 2021 | { |
e514a9d6 JM |
2022 | case bp_breakpoint: |
2023 | case bp_hardware_breakpoint: | |
8b93c638 JM |
2024 | annotate_breakpoint (bs->breakpoint_at->number); |
2025 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2026 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2027 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2028 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2029 | ui_out_text (uiout, ", "); | |
2030 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2031 | break; |
2032 | ||
2033 | case bp_shlib_event: | |
917317f4 JM |
2034 | /* Did we stop because the user set the stop_on_solib_events |
2035 | variable? (If so, we report this as a generic, "Stopped due | |
2036 | to shlib event" message.) */ | |
e514a9d6 JM |
2037 | printf_filtered ("Stopped due to shared library event\n"); |
2038 | return PRINT_NOTHING; | |
2039 | break; | |
2040 | ||
c4093a6a JM |
2041 | case bp_thread_event: |
2042 | /* Not sure how we will get here. | |
2043 | GDB should not stop for these breakpoints. */ | |
2044 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2045 | return PRINT_NOTHING; | |
2046 | break; | |
2047 | ||
1900040c MS |
2048 | case bp_overlay_event: |
2049 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2050 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2051 | return PRINT_NOTHING; | |
2052 | break; | |
2053 | ||
e514a9d6 | 2054 | case bp_catch_load: |
c906108c SS |
2055 | annotate_catchpoint (bs->breakpoint_at->number); |
2056 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2057 | printf_filtered ("loaded"); |
2058 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2059 | return PRINT_SRC_AND_LOC; | |
2060 | break; | |
2061 | ||
2062 | case bp_catch_unload: | |
2063 | annotate_catchpoint (bs->breakpoint_at->number); | |
2064 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2065 | printf_filtered ("unloaded"); | |
2066 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2067 | return PRINT_SRC_AND_LOC; | |
2068 | break; | |
2069 | ||
2070 | case bp_catch_fork: | |
2071 | annotate_catchpoint (bs->breakpoint_at->number); | |
2072 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2073 | printf_filtered ("forked"); | |
53a5351d JM |
2074 | printf_filtered (" process %d), ", |
2075 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2076 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2077 | break; |
2078 | ||
2079 | case bp_catch_vfork: | |
2080 | annotate_catchpoint (bs->breakpoint_at->number); | |
2081 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2082 | printf_filtered ("vforked"); | |
2083 | printf_filtered (" process %d), ", | |
2084 | bs->breakpoint_at->forked_inferior_pid); | |
2085 | return PRINT_SRC_AND_LOC; | |
2086 | break; | |
2087 | ||
2088 | case bp_catch_exec: | |
c906108c SS |
2089 | annotate_catchpoint (bs->breakpoint_at->number); |
2090 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2091 | bs->breakpoint_at->number, |
2092 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2093 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2094 | break; |
2095 | ||
2096 | case bp_catch_catch: | |
53a5351d JM |
2097 | if (current_exception_event && |
2098 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2099 | { |
2100 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2101 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2102 | bs->breakpoint_at->number); | |
c5aa993b JM |
2103 | printf_filtered ("throw location "); |
2104 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2105 | printf_filtered ("%s:%d", | |
2106 | CURRENT_EXCEPTION_THROW_FILE, | |
2107 | CURRENT_EXCEPTION_THROW_LINE); | |
2108 | else | |
2109 | printf_filtered ("unknown"); | |
2110 | ||
2111 | printf_filtered (", catch location "); | |
2112 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2113 | printf_filtered ("%s:%d", | |
2114 | CURRENT_EXCEPTION_CATCH_FILE, | |
2115 | CURRENT_EXCEPTION_CATCH_LINE); | |
2116 | else | |
2117 | printf_filtered ("unknown"); | |
2118 | ||
2119 | printf_filtered ("\n"); | |
e514a9d6 JM |
2120 | /* don't bother to print location frame info */ |
2121 | return PRINT_SRC_ONLY; | |
c5aa993b | 2122 | } |
c906108c | 2123 | else |
c5aa993b | 2124 | { |
e514a9d6 JM |
2125 | /* really throw, some other bpstat will handle it */ |
2126 | return PRINT_UNKNOWN; | |
c5aa993b | 2127 | } |
e514a9d6 JM |
2128 | break; |
2129 | ||
2130 | case bp_catch_throw: | |
53a5351d JM |
2131 | if (current_exception_event && |
2132 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2133 | { |
2134 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2135 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2136 | bs->breakpoint_at->number); | |
c5aa993b JM |
2137 | printf_filtered ("throw location "); |
2138 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2139 | printf_filtered ("%s:%d", | |
2140 | CURRENT_EXCEPTION_THROW_FILE, | |
2141 | CURRENT_EXCEPTION_THROW_LINE); | |
2142 | else | |
2143 | printf_filtered ("unknown"); | |
2144 | ||
2145 | printf_filtered (", catch location "); | |
2146 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2147 | printf_filtered ("%s:%d", | |
2148 | CURRENT_EXCEPTION_CATCH_FILE, | |
2149 | CURRENT_EXCEPTION_CATCH_LINE); | |
2150 | else | |
2151 | printf_filtered ("unknown"); | |
2152 | ||
2153 | printf_filtered ("\n"); | |
e514a9d6 JM |
2154 | /* don't bother to print location frame info */ |
2155 | return PRINT_SRC_ONLY; | |
c5aa993b | 2156 | } |
c906108c | 2157 | else |
c5aa993b | 2158 | { |
e514a9d6 JM |
2159 | /* really catch, some other bpstat will handle it */ |
2160 | return PRINT_UNKNOWN; | |
c5aa993b | 2161 | } |
e514a9d6 | 2162 | break; |
c906108c | 2163 | |
e514a9d6 JM |
2164 | case bp_watchpoint: |
2165 | case bp_hardware_watchpoint: | |
2166 | if (bs->old_val != NULL) | |
2167 | { | |
2168 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2169 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2170 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2171 | mention (bs->breakpoint_at); |
666547aa | 2172 | ui_out_tuple_begin (uiout, "value"); |
8b93c638 JM |
2173 | ui_out_text (uiout, "\nOld value = "); |
2174 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2175 | ui_out_field_stream (uiout, "old", stb); | |
2176 | ui_out_text (uiout, "\nNew value = "); | |
2177 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2178 | ui_out_field_stream (uiout, "new", stb); | |
666547aa | 2179 | ui_out_tuple_end (uiout); |
8b93c638 | 2180 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2181 | value_free (bs->old_val); |
2182 | bs->old_val = NULL; | |
2183 | } | |
2184 | /* More than one watchpoint may have been triggered. */ | |
2185 | return PRINT_UNKNOWN; | |
2186 | break; | |
2187 | ||
2188 | case bp_read_watchpoint: | |
9dc5e2a9 | 2189 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2190 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); |
8b93c638 | 2191 | mention (bs->breakpoint_at); |
666547aa | 2192 | ui_out_tuple_begin (uiout, "value"); |
8b93c638 JM |
2193 | ui_out_text (uiout, "\nValue = "); |
2194 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2195 | ui_out_field_stream (uiout, "value", stb); | |
666547aa | 2196 | ui_out_tuple_end (uiout); |
8b93c638 | 2197 | ui_out_text (uiout, "\n"); |
917317f4 | 2198 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2199 | break; |
2200 | ||
2201 | case bp_access_watchpoint: | |
8b93c638 JM |
2202 | if (bs->old_val != NULL) |
2203 | { | |
2204 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2205 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2206 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2207 | mention (bs->breakpoint_at); |
666547aa | 2208 | ui_out_tuple_begin (uiout, "value"); |
8b93c638 JM |
2209 | ui_out_text (uiout, "\nOld value = "); |
2210 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2211 | ui_out_field_stream (uiout, "old", stb); | |
2212 | value_free (bs->old_val); | |
2213 | bs->old_val = NULL; | |
2214 | ui_out_text (uiout, "\nNew value = "); | |
2215 | } | |
2216 | else | |
2217 | { | |
2218 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2219 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2220 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
666547aa | 2221 | ui_out_tuple_begin (uiout, "value"); |
8b93c638 JM |
2222 | ui_out_text (uiout, "\nValue = "); |
2223 | } | |
2224 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2225 | ui_out_field_stream (uiout, "new", stb); | |
666547aa | 2226 | ui_out_tuple_end (uiout); |
8b93c638 | 2227 | ui_out_text (uiout, "\n"); |
917317f4 | 2228 | return PRINT_UNKNOWN; |
e514a9d6 | 2229 | break; |
4ce44c66 | 2230 | |
e514a9d6 JM |
2231 | /* Fall through, we don't deal with these types of breakpoints |
2232 | here. */ | |
2233 | ||
11cf8741 | 2234 | case bp_finish: |
9dc5e2a9 | 2235 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2236 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2237 | return PRINT_UNKNOWN; |
2238 | break; | |
2239 | ||
e514a9d6 | 2240 | case bp_until: |
9dc5e2a9 | 2241 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2242 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2243 | return PRINT_UNKNOWN; |
2244 | break; | |
2245 | ||
c2d11a7d | 2246 | case bp_none: |
e514a9d6 JM |
2247 | case bp_longjmp: |
2248 | case bp_longjmp_resume: | |
2249 | case bp_step_resume: | |
2250 | case bp_through_sigtramp: | |
2251 | case bp_watchpoint_scope: | |
2252 | case bp_call_dummy: | |
2253 | default: | |
2254 | return PRINT_UNKNOWN; | |
2255 | } | |
2256 | } | |
2257 | ||
2258 | /* Generic routine for printing messages indicating why we | |
2259 | stopped. The behavior of this function depends on the value | |
2260 | 'print_it' in the bpstat structure. Under some circumstances we | |
2261 | may decide not to print anything here and delegate the task to | |
2262 | normal_stop(). */ | |
2263 | ||
2264 | static enum print_stop_action | |
2265 | print_bp_stop_message (bpstat bs) | |
2266 | { | |
2267 | switch (bs->print_it) | |
2268 | { | |
2269 | case print_it_noop: | |
2270 | /* Nothing should be printed for this bpstat entry. */ | |
2271 | return PRINT_UNKNOWN; | |
2272 | break; | |
2273 | ||
2274 | case print_it_done: | |
2275 | /* We still want to print the frame, but we already printed the | |
2276 | relevant messages. */ | |
2277 | return PRINT_SRC_AND_LOC; | |
2278 | break; | |
2279 | ||
2280 | case print_it_normal: | |
2281 | /* Normal case, we handle everything in print_it_typical. */ | |
2282 | return print_it_typical (bs); | |
2283 | break; | |
2284 | default: | |
8e65ff28 AC |
2285 | internal_error (__FILE__, __LINE__, |
2286 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2287 | break; |
c906108c | 2288 | } |
c906108c SS |
2289 | } |
2290 | ||
e514a9d6 JM |
2291 | /* Print a message indicating what happened. This is called from |
2292 | normal_stop(). The input to this routine is the head of the bpstat | |
2293 | list - a list of the eventpoints that caused this stop. This | |
2294 | routine calls the generic print routine for printing a message | |
2295 | about reasons for stopping. This will print (for example) the | |
2296 | "Breakpoint n," part of the output. The return value of this | |
2297 | routine is one of: | |
c906108c | 2298 | |
917317f4 JM |
2299 | PRINT_UNKNOWN: Means we printed nothing |
2300 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2301 | code to print the location. An example is |
2302 | "Breakpoint 1, " which should be followed by | |
2303 | the location. | |
917317f4 | 2304 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2305 | to also print the location part of the message. |
2306 | An example is the catch/throw messages, which | |
917317f4 JM |
2307 | don't require a location appended to the end. |
2308 | PRINT_NOTHING: We have done some printing and we don't need any | |
2309 | further info to be printed.*/ | |
c906108c | 2310 | |
917317f4 | 2311 | enum print_stop_action |
fba45db2 | 2312 | bpstat_print (bpstat bs) |
c906108c SS |
2313 | { |
2314 | int val; | |
c5aa993b | 2315 | |
c906108c | 2316 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2317 | (Currently all watchpoints go on the bpstat whether hit or not. |
2318 | That probably could (should) be changed, provided care is taken | |
c906108c | 2319 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2320 | for (; bs; bs = bs->next) |
2321 | { | |
2322 | val = print_bp_stop_message (bs); | |
2323 | if (val == PRINT_SRC_ONLY | |
2324 | || val == PRINT_SRC_AND_LOC | |
2325 | || val == PRINT_NOTHING) | |
2326 | return val; | |
2327 | } | |
c906108c | 2328 | |
e514a9d6 JM |
2329 | /* We reached the end of the chain, or we got a null BS to start |
2330 | with and nothing was printed. */ | |
917317f4 | 2331 | return PRINT_UNKNOWN; |
c906108c SS |
2332 | } |
2333 | ||
2334 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2335 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2336 | The argument is a "struct expression *" that has been cast to char * to | |
2337 | make it pass through catch_errors. */ | |
2338 | ||
2339 | static int | |
fba45db2 | 2340 | breakpoint_cond_eval (PTR exp) |
c906108c | 2341 | { |
278cd55f | 2342 | struct value *mark = value_mark (); |
c5aa993b | 2343 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2344 | value_free_to_mark (mark); |
2345 | return i; | |
2346 | } | |
2347 | ||
2348 | /* Allocate a new bpstat and chain it to the current one. */ | |
2349 | ||
2350 | static bpstat | |
831662b3 | 2351 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2352 | { |
2353 | bpstat bs; | |
2354 | ||
2355 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2356 | cbs->next = bs; | |
2357 | bs->breakpoint_at = b; | |
2358 | /* If the condition is false, etc., don't do the commands. */ | |
2359 | bs->commands = NULL; | |
2360 | bs->old_val = NULL; | |
2361 | bs->print_it = print_it_normal; | |
2362 | return bs; | |
2363 | } | |
2364 | \f | |
2365 | /* Possible return values for watchpoint_check (this can't be an enum | |
2366 | because of check_errors). */ | |
2367 | /* The watchpoint has been deleted. */ | |
2368 | #define WP_DELETED 1 | |
2369 | /* The value has changed. */ | |
2370 | #define WP_VALUE_CHANGED 2 | |
2371 | /* The value has not changed. */ | |
2372 | #define WP_VALUE_NOT_CHANGED 3 | |
2373 | ||
2374 | #define BP_TEMPFLAG 1 | |
2375 | #define BP_HARDWAREFLAG 2 | |
2376 | ||
2377 | /* Check watchpoint condition. */ | |
2378 | ||
2379 | static int | |
fba45db2 | 2380 | watchpoint_check (PTR p) |
c906108c SS |
2381 | { |
2382 | bpstat bs = (bpstat) p; | |
2383 | struct breakpoint *b; | |
2384 | struct frame_info *fr; | |
2385 | int within_current_scope; | |
2386 | ||
2387 | b = bs->breakpoint_at; | |
2388 | ||
2389 | if (b->exp_valid_block == NULL) | |
2390 | within_current_scope = 1; | |
2391 | else | |
2392 | { | |
2393 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2394 | any chance of handling watchpoints on local variables, we'll need |
2395 | the frame chain (so we can determine if we're in scope). */ | |
2396 | reinit_frame_cache (); | |
101dcfbe | 2397 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2398 | within_current_scope = (fr != NULL); |
c12260ac CV |
2399 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2400 | in the function but the stack frame has already been invalidated. | |
2401 | Since we can't rely on the values of local variables after the | |
2402 | stack has been destroyed, we are treating the watchpoint in that | |
2403 | state as `not changed' without further checking. */ | |
2404 | if (within_current_scope && fr == get_current_frame () | |
2405 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) | |
2406 | return WP_VALUE_NOT_CHANGED; | |
c906108c SS |
2407 | if (within_current_scope) |
2408 | /* If we end up stopping, the current frame will get selected | |
2409 | in normal_stop. So this call to select_frame won't affect | |
2410 | the user. */ | |
0f7d239c | 2411 | select_frame (fr); |
c906108c | 2412 | } |
c5aa993b | 2413 | |
c906108c SS |
2414 | if (within_current_scope) |
2415 | { | |
2416 | /* We use value_{,free_to_}mark because it could be a | |
2417 | *long* time before we return to the command level and | |
c5aa993b JM |
2418 | call free_all_values. We can't call free_all_values because |
2419 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2420 | |
278cd55f AC |
2421 | struct value *mark = value_mark (); |
2422 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2423 | if (!value_equal (b->val, new_val)) |
2424 | { | |
2425 | release_value (new_val); | |
2426 | value_free_to_mark (mark); | |
2427 | bs->old_val = b->val; | |
2428 | b->val = new_val; | |
2429 | /* We will stop here */ | |
2430 | return WP_VALUE_CHANGED; | |
2431 | } | |
2432 | else | |
2433 | { | |
2434 | /* Nothing changed, don't do anything. */ | |
2435 | value_free_to_mark (mark); | |
2436 | /* We won't stop here */ | |
2437 | return WP_VALUE_NOT_CHANGED; | |
2438 | } | |
2439 | } | |
2440 | else | |
2441 | { | |
2442 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2443 | if we temporarily ignored the watchpoint, then when |
2444 | we reenter the block in which it is valid it contains | |
2445 | garbage (in the case of a function, it may have two | |
2446 | garbage values, one before and one after the prologue). | |
2447 | So we can't even detect the first assignment to it and | |
2448 | watch after that (since the garbage may or may not equal | |
2449 | the first value assigned). */ | |
4ce44c66 JM |
2450 | /* We print all the stop information in print_it_typical(), but |
2451 | in this case, by the time we call print_it_typical() this bp | |
2452 | will be deleted already. So we have no choice but print the | |
2453 | information here. */ | |
9dc5e2a9 | 2454 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2455 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2456 | ui_out_text (uiout, "\nWatchpoint "); |
2457 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2458 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2459 | which its expression is valid.\n"); | |
4ce44c66 | 2460 | |
c906108c | 2461 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2462 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2463 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2464 | |
2465 | return WP_DELETED; | |
2466 | } | |
2467 | } | |
2468 | ||
c906108c SS |
2469 | /* Get a bpstat associated with having just stopped at address *PC |
2470 | and frame address CORE_ADDRESS. Update *PC to point at the | |
6e31adb3 | 2471 | breakpoint (if we hit a breakpoint). NOT_A_SW_BREAKPOINT is nonzero |
c906108c SS |
2472 | if this is known to not be a real breakpoint (it could still be a |
2473 | watchpoint, though). */ | |
2474 | ||
2475 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2476 | don't understand this stop. Result is a chain of bpstat's such that: | |
2477 | ||
c5aa993b | 2478 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2479 | |
c5aa993b | 2480 | if we understand why we stopped, the result is not null. |
c906108c | 2481 | |
c5aa993b JM |
2482 | Each element of the chain refers to a particular breakpoint or |
2483 | watchpoint at which we have stopped. (We may have stopped for | |
2484 | several reasons concurrently.) | |
c906108c | 2485 | |
c5aa993b JM |
2486 | Each element of the chain has valid next, breakpoint_at, |
2487 | commands, FIXME??? fields. */ | |
c906108c SS |
2488 | |
2489 | bpstat | |
6e31adb3 | 2490 | bpstat_stop_status (CORE_ADDR *pc, int not_a_sw_breakpoint) |
c906108c SS |
2491 | { |
2492 | register struct breakpoint *b, *temp; | |
2493 | CORE_ADDR bp_addr; | |
2494 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2495 | int real_breakpoint = 0; | |
2496 | /* Root of the chain of bpstat's */ | |
2497 | struct bpstats root_bs[1]; | |
2498 | /* Pointer to the last thing in the chain currently. */ | |
2499 | bpstat bs = root_bs; | |
2500 | static char message1[] = | |
c5aa993b JM |
2501 | "Error evaluating expression for watchpoint %d\n"; |
2502 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c | 2503 | |
6e31adb3 AC |
2504 | /* Get the address where the breakpoint would have been. The |
2505 | "not_a_sw_breakpoint" argument is meant to distinguish between a | |
2506 | breakpoint trap event and a trace/singlestep trap event. For a | |
2507 | trace/singlestep trap event, we would not want to subtract | |
2508 | DECR_PC_AFTER_BREAK from the PC. */ | |
80b34fab | 2509 | |
c8edd8b4 | 2510 | bp_addr = *pc - (not_a_sw_breakpoint ? 0 : DECR_PC_AFTER_BREAK); |
c906108c SS |
2511 | |
2512 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 2513 | { |
b5de0fa7 EZ |
2514 | if (b->enable_state == bp_disabled |
2515 | || b->enable_state == bp_shlib_disabled | |
2516 | || b->enable_state == bp_call_disabled) | |
c5aa993b JM |
2517 | continue; |
2518 | ||
2519 | if (b->type != bp_watchpoint | |
2520 | && b->type != bp_hardware_watchpoint | |
2521 | && b->type != bp_read_watchpoint | |
2522 | && b->type != bp_access_watchpoint | |
2523 | && b->type != bp_hardware_breakpoint | |
2524 | && b->type != bp_catch_fork | |
2525 | && b->type != bp_catch_vfork | |
2526 | && b->type != bp_catch_exec | |
2527 | && b->type != bp_catch_catch | |
2528 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 MS |
2529 | { |
2530 | if (b->address != bp_addr) /* address doesn't match */ | |
2531 | continue; | |
2532 | if (overlay_debugging /* unmapped overlay section */ | |
2533 | && section_is_overlay (b->section) | |
2534 | && !section_is_mapped (b->section)) | |
2535 | continue; | |
2536 | } | |
c906108c | 2537 | |
c02f5703 MS |
2538 | if (b->type == bp_hardware_breakpoint) |
2539 | { | |
2540 | if (b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2541 | continue; | |
2542 | if (overlay_debugging /* unmapped overlay section */ | |
2543 | && section_is_overlay (b->section) | |
2544 | && !section_is_mapped (b->section)) | |
2545 | continue; | |
2546 | } | |
c5aa993b | 2547 | |
c5aa993b JM |
2548 | /* Is this a catchpoint of a load or unload? If so, did we |
2549 | get a load or unload of the specified library? If not, | |
2550 | ignore it. */ | |
2551 | if ((b->type == bp_catch_load) | |
c906108c | 2552 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2553 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2554 | || ((b->dll_pathname != NULL) |
53a5351d | 2555 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2556 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2557 | PIDGET (inferior_ptid))) | |
53a5351d | 2558 | != 0))) |
c906108c | 2559 | #endif |
c5aa993b JM |
2560 | ) |
2561 | continue; | |
2562 | ||
2563 | if ((b->type == bp_catch_unload) | |
c906108c | 2564 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2565 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2566 | || ((b->dll_pathname != NULL) |
53a5351d | 2567 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2568 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2569 | PIDGET (inferior_ptid))) | |
53a5351d | 2570 | != 0))) |
c906108c | 2571 | #endif |
c5aa993b JM |
2572 | ) |
2573 | continue; | |
c906108c | 2574 | |
c5aa993b | 2575 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2576 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2577 | &b->forked_inferior_pid)) | |
c5aa993b | 2578 | continue; |
c906108c | 2579 | |
c5aa993b | 2580 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2581 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2582 | &b->forked_inferior_pid)) | |
c5aa993b | 2583 | continue; |
c906108c | 2584 | |
c5aa993b | 2585 | if ((b->type == bp_catch_exec) |
47932f85 | 2586 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2587 | continue; |
c906108c | 2588 | |
c5aa993b JM |
2589 | if (ep_is_exception_catchpoint (b) && |
2590 | !(current_exception_event = target_get_current_exception_event ())) | |
2591 | continue; | |
c906108c | 2592 | |
c5aa993b JM |
2593 | /* Come here if it's a watchpoint, or if the break address matches */ |
2594 | ||
2595 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2596 | ||
2597 | /* Watchpoints may change this, if not found to have triggered. */ | |
2598 | bs->stop = 1; | |
2599 | bs->print = 1; | |
2600 | ||
2601 | sprintf (message, message1, b->number); | |
53a5351d JM |
2602 | if (b->type == bp_watchpoint || |
2603 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2604 | { |
53a5351d JM |
2605 | switch (catch_errors (watchpoint_check, bs, message, |
2606 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2607 | { |
2608 | case WP_DELETED: | |
2609 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2610 | /* Actually this is superfluous, because by the time we |
2611 | call print_it_typical() the wp will be already deleted, | |
2612 | and the function will return immediately. */ | |
c5aa993b JM |
2613 | bs->print_it = print_it_done; |
2614 | /* Stop. */ | |
2615 | break; | |
2616 | case WP_VALUE_CHANGED: | |
2617 | /* Stop. */ | |
2618 | ++(b->hit_count); | |
2619 | break; | |
2620 | case WP_VALUE_NOT_CHANGED: | |
2621 | /* Don't stop. */ | |
2622 | bs->print_it = print_it_noop; | |
2623 | bs->stop = 0; | |
c5aa993b JM |
2624 | continue; |
2625 | default: | |
2626 | /* Can't happen. */ | |
2627 | /* FALLTHROUGH */ | |
2628 | case 0: | |
2629 | /* Error from catch_errors. */ | |
2630 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2631 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2632 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2633 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2634 | /* We've already printed what needs to be printed. */ |
2635 | bs->print_it = print_it_done; | |
2636 | ||
2637 | /* Stop. */ | |
2638 | break; | |
2639 | } | |
2640 | } | |
53a5351d JM |
2641 | else if (b->type == bp_read_watchpoint || |
2642 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2643 | { |
2644 | CORE_ADDR addr; | |
278cd55f | 2645 | struct value *v; |
c5aa993b JM |
2646 | int found = 0; |
2647 | ||
2648 | addr = target_stopped_data_address (); | |
2649 | if (addr == 0) | |
2650 | continue; | |
2651 | for (v = b->val_chain; v; v = v->next) | |
2652 | { | |
5c44784c JM |
2653 | if (VALUE_LVAL (v) == lval_memory |
2654 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2655 | { |
2e70b7b9 MS |
2656 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2657 | ||
2658 | if (v == b->val_chain | |
2659 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2660 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2661 | { | |
2662 | CORE_ADDR vaddr; | |
2663 | ||
2664 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2665 | /* Exact match not required. Within range is | |
2666 | sufficient. */ | |
2667 | if (addr >= vaddr && | |
2668 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2669 | found = 1; | |
2670 | } | |
c5aa993b JM |
2671 | } |
2672 | } | |
2673 | if (found) | |
53a5351d JM |
2674 | switch (catch_errors (watchpoint_check, bs, message, |
2675 | RETURN_MASK_ALL)) | |
c906108c SS |
2676 | { |
2677 | case WP_DELETED: | |
2678 | /* We've already printed what needs to be printed. */ | |
2679 | bs->print_it = print_it_done; | |
2680 | /* Stop. */ | |
2681 | break; | |
2682 | case WP_VALUE_CHANGED: | |
99e5c1c8 MS |
2683 | if (b->type == bp_read_watchpoint) |
2684 | { | |
2685 | /* Don't stop: read watchpoints shouldn't fire if | |
2686 | the value has changed. This is for targets which | |
2687 | cannot set read-only watchpoints. */ | |
2688 | bs->print_it = print_it_noop; | |
2689 | bs->stop = 0; | |
2690 | continue; | |
2691 | } | |
2692 | ++(b->hit_count); | |
2693 | break; | |
c5aa993b | 2694 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2695 | /* Stop. */ |
2696 | ++(b->hit_count); | |
2697 | break; | |
c906108c SS |
2698 | default: |
2699 | /* Can't happen. */ | |
c906108c SS |
2700 | case 0: |
2701 | /* Error from catch_errors. */ | |
2702 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2703 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2704 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2705 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2706 | /* We've already printed what needs to be printed. */ |
2707 | bs->print_it = print_it_done; | |
c906108c SS |
2708 | break; |
2709 | } | |
53a5351d JM |
2710 | else /* found == 0 */ |
2711 | { | |
2712 | /* This is a case where some watchpoint(s) triggered, | |
2713 | but not at the address of this watchpoint (FOUND | |
2714 | was left zero). So don't print anything for this | |
2715 | watchpoint. */ | |
2716 | bs->print_it = print_it_noop; | |
2717 | bs->stop = 0; | |
2718 | continue; | |
2719 | } | |
c5aa993b JM |
2720 | } |
2721 | else | |
2722 | { | |
2723 | /* By definition, an encountered breakpoint is a triggered | |
2724 | breakpoint. */ | |
2725 | ++(b->hit_count); | |
c906108c | 2726 | |
c5aa993b JM |
2727 | real_breakpoint = 1; |
2728 | } | |
2729 | ||
ed9a39eb JM |
2730 | if (b->frame && |
2731 | b->frame != (get_current_frame ())->frame) | |
c5aa993b JM |
2732 | bs->stop = 0; |
2733 | else | |
2734 | { | |
2735 | int value_is_zero = 0; | |
2736 | ||
2737 | if (b->cond) | |
2738 | { | |
2739 | /* Need to select the frame, with all that implies | |
2740 | so that the conditions will have the right context. */ | |
0f7d239c | 2741 | select_frame (get_current_frame ()); |
c5aa993b JM |
2742 | value_is_zero |
2743 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2744 | "Error in testing breakpoint condition:\n", | |
2745 | RETURN_MASK_ALL); | |
2746 | /* FIXME-someday, should give breakpoint # */ | |
2747 | free_all_values (); | |
2748 | } | |
2749 | if (b->cond && value_is_zero) | |
2750 | { | |
2751 | bs->stop = 0; | |
2752 | /* Don't consider this a hit. */ | |
2753 | --(b->hit_count); | |
2754 | } | |
2755 | else if (b->ignore_count > 0) | |
2756 | { | |
2757 | b->ignore_count--; | |
5c44784c | 2758 | annotate_ignore_count_change (); |
c5aa993b JM |
2759 | bs->stop = 0; |
2760 | } | |
2761 | else | |
2762 | { | |
2763 | /* We will stop here */ | |
b5de0fa7 EZ |
2764 | if (b->disposition == disp_disable) |
2765 | b->enable_state = bp_disabled; | |
c2b8ed2c | 2766 | bs->commands = copy_command_lines (b->commands); |
c5aa993b JM |
2767 | if (b->silent) |
2768 | bs->print = 0; | |
2769 | if (bs->commands && | |
2770 | (STREQ ("silent", bs->commands->line) || | |
2771 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2772 | { | |
2773 | bs->commands = bs->commands->next; | |
c906108c | 2774 | bs->print = 0; |
c5aa993b JM |
2775 | } |
2776 | } | |
2777 | } | |
2778 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2779 | if (bs->stop == 0 || bs->print == 0) | |
2780 | bs->print_it = print_it_noop; | |
2781 | } | |
c906108c SS |
2782 | |
2783 | bs->next = NULL; /* Terminate the chain */ | |
2784 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2785 | ||
2786 | if (real_breakpoint && bs) | |
2787 | { | |
c5aa993b | 2788 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2789 | { |
c5aa993b | 2790 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2791 | { |
2792 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2793 | write_pc (*pc); | |
2794 | } | |
2795 | } | |
2796 | else | |
2797 | { | |
2798 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2799 | { | |
2800 | *pc = bp_addr; | |
2801 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2802 | SHIFT_INST_REGS (); |
c906108c SS |
2803 | #else /* No SHIFT_INST_REGS. */ |
2804 | write_pc (bp_addr); | |
2805 | #endif /* No SHIFT_INST_REGS. */ | |
2806 | } | |
2807 | } | |
2808 | } | |
2809 | ||
2810 | /* The value of a hardware watchpoint hasn't changed, but the | |
2811 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2812 | if (bs && !bs->stop && |
c906108c SS |
2813 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2814 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2815 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2816 | { | |
2817 | remove_breakpoints (); | |
2818 | insert_breakpoints (); | |
2819 | } | |
2820 | return bs; | |
2821 | } | |
2822 | \f | |
2823 | /* Tell what to do about this bpstat. */ | |
2824 | struct bpstat_what | |
fba45db2 | 2825 | bpstat_what (bpstat bs) |
c906108c SS |
2826 | { |
2827 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2828 | enum class |
2829 | { | |
2830 | /* This bpstat element has no effect on the main_action. */ | |
2831 | no_effect = 0, | |
2832 | ||
2833 | /* There was a watchpoint, stop but don't print. */ | |
2834 | wp_silent, | |
c906108c | 2835 | |
c5aa993b JM |
2836 | /* There was a watchpoint, stop and print. */ |
2837 | wp_noisy, | |
c906108c | 2838 | |
c5aa993b JM |
2839 | /* There was a breakpoint but we're not stopping. */ |
2840 | bp_nostop, | |
c906108c | 2841 | |
c5aa993b JM |
2842 | /* There was a breakpoint, stop but don't print. */ |
2843 | bp_silent, | |
c906108c | 2844 | |
c5aa993b JM |
2845 | /* There was a breakpoint, stop and print. */ |
2846 | bp_noisy, | |
c906108c | 2847 | |
c5aa993b JM |
2848 | /* We hit the longjmp breakpoint. */ |
2849 | long_jump, | |
c906108c | 2850 | |
c5aa993b JM |
2851 | /* We hit the longjmp_resume breakpoint. */ |
2852 | long_resume, | |
c906108c | 2853 | |
c5aa993b JM |
2854 | /* We hit the step_resume breakpoint. */ |
2855 | step_resume, | |
c906108c | 2856 | |
c5aa993b JM |
2857 | /* We hit the through_sigtramp breakpoint. */ |
2858 | through_sig, | |
c906108c | 2859 | |
c5aa993b JM |
2860 | /* We hit the shared library event breakpoint. */ |
2861 | shlib_event, | |
c906108c | 2862 | |
c5aa993b JM |
2863 | /* We caught a shared library event. */ |
2864 | catch_shlib_event, | |
c906108c | 2865 | |
c5aa993b JM |
2866 | /* This is just used to count how many enums there are. */ |
2867 | class_last | |
c906108c SS |
2868 | }; |
2869 | ||
2870 | /* Here is the table which drives this routine. So that we can | |
2871 | format it pretty, we define some abbreviations for the | |
2872 | enum bpstat_what codes. */ | |
2873 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2874 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2875 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2876 | #define sgl BPSTAT_WHAT_SINGLE | |
2877 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2878 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2879 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2880 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2881 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2882 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2883 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2884 | ||
2885 | /* "Can't happen." Might want to print an error message. | |
2886 | abort() is not out of the question, but chances are GDB is just | |
2887 | a bit confused, not unusable. */ | |
2888 | #define err BPSTAT_WHAT_STOP_NOISY | |
2889 | ||
2890 | /* Given an old action and a class, come up with a new action. */ | |
2891 | /* One interesting property of this table is that wp_silent is the same | |
2892 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2893 | after stopping, the check for whether to step over a breakpoint | |
2894 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2895 | reference to how we stopped. We retain separate wp_silent and |
2896 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2897 | |
2898 | Another possibly interesting property of this table is that | |
2899 | there's a partial ordering, priority-like, of the actions. Once | |
2900 | you've decided that some action is appropriate, you'll never go | |
2901 | back and decide something of a lower priority is better. The | |
2902 | ordering is: | |
2903 | ||
7e73cedf | 2904 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2905 | sgl < clrs shl shlr slr sn sr ss ts |
2906 | slr < err shl shlr sn sr ss ts | |
2907 | clr < clrs err shl shlr sn sr ss ts | |
2908 | clrs < err shl shlr sn sr ss ts | |
2909 | ss < shl shlr sn sr ts | |
2910 | sn < shl shlr sr ts | |
2911 | sr < shl shlr ts | |
2912 | shl < shlr | |
2913 | ts < | |
2914 | shlr < | |
2915 | ||
43ff13b4 JM |
2916 | What I think this means is that we don't need a damned table |
2917 | here. If you just put the rows and columns in the right order, | |
2918 | it'd look awfully regular. We could simply walk the bpstat list | |
2919 | and choose the highest priority action we find, with a little | |
2920 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2921 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2922 | is messy anyway). */ | |
c906108c SS |
2923 | |
2924 | /* step_resume entries: a step resume breakpoint overrides another | |
2925 | breakpoint of signal handling (see comment in wait_for_inferior | |
d7bd68ca | 2926 | at first PC_IN_SIGTRAMP where we set the step_resume breakpoint). */ |
c906108c SS |
2927 | /* We handle the through_sigtramp_breakpoint the same way; having both |
2928 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2929 | ||
2930 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2931 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2932 | { | |
2933 | /* old action */ | |
2934 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2935 | */ | |
2936 | /*no_effect */ | |
2937 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2938 | /*wp_silent */ | |
2939 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2940 | /*wp_noisy */ | |
2941 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2942 | /*bp_nostop */ | |
2943 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2944 | /*bp_silent */ | |
2945 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2946 | /*bp_noisy */ | |
2947 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2948 | /*long_jump */ | |
a48bb0b3 | 2949 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
2950 | /*long_resume */ |
2951 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2952 | /*step_resume */ | |
2953 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2954 | /*through_sig */ | |
2955 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2956 | /*shlib */ | |
2957 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2958 | /*catch_shlib */ | |
2959 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2960 | }; | |
c906108c SS |
2961 | |
2962 | #undef kc | |
2963 | #undef ss | |
2964 | #undef sn | |
2965 | #undef sgl | |
2966 | #undef slr | |
2967 | #undef clr | |
2968 | #undef clrs | |
2969 | #undef err | |
2970 | #undef sr | |
2971 | #undef ts | |
2972 | #undef shl | |
2973 | #undef shlr | |
2974 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2975 | struct bpstat_what retval; | |
2976 | ||
2977 | retval.call_dummy = 0; | |
2978 | for (; bs != NULL; bs = bs->next) | |
2979 | { | |
2980 | enum class bs_class = no_effect; | |
2981 | if (bs->breakpoint_at == NULL) | |
2982 | /* I suspect this can happen if it was a momentary breakpoint | |
2983 | which has since been deleted. */ | |
2984 | continue; | |
2985 | switch (bs->breakpoint_at->type) | |
2986 | { | |
2987 | case bp_none: | |
2988 | continue; | |
2989 | ||
2990 | case bp_breakpoint: | |
2991 | case bp_hardware_breakpoint: | |
2992 | case bp_until: | |
2993 | case bp_finish: | |
2994 | if (bs->stop) | |
2995 | { | |
2996 | if (bs->print) | |
2997 | bs_class = bp_noisy; | |
2998 | else | |
2999 | bs_class = bp_silent; | |
3000 | } | |
3001 | else | |
3002 | bs_class = bp_nostop; | |
3003 | break; | |
3004 | case bp_watchpoint: | |
3005 | case bp_hardware_watchpoint: | |
3006 | case bp_read_watchpoint: | |
3007 | case bp_access_watchpoint: | |
3008 | if (bs->stop) | |
3009 | { | |
3010 | if (bs->print) | |
3011 | bs_class = wp_noisy; | |
3012 | else | |
3013 | bs_class = wp_silent; | |
3014 | } | |
3015 | else | |
53a5351d JM |
3016 | /* There was a watchpoint, but we're not stopping. |
3017 | This requires no further action. */ | |
c906108c SS |
3018 | bs_class = no_effect; |
3019 | break; | |
3020 | case bp_longjmp: | |
3021 | bs_class = long_jump; | |
3022 | break; | |
3023 | case bp_longjmp_resume: | |
3024 | bs_class = long_resume; | |
3025 | break; | |
3026 | case bp_step_resume: | |
3027 | if (bs->stop) | |
3028 | { | |
3029 | bs_class = step_resume; | |
3030 | } | |
3031 | else | |
3032 | /* It is for the wrong frame. */ | |
3033 | bs_class = bp_nostop; | |
3034 | break; | |
3035 | case bp_through_sigtramp: | |
3036 | bs_class = through_sig; | |
3037 | break; | |
3038 | case bp_watchpoint_scope: | |
3039 | bs_class = bp_nostop; | |
3040 | break; | |
c5aa993b JM |
3041 | case bp_shlib_event: |
3042 | bs_class = shlib_event; | |
3043 | break; | |
c4093a6a | 3044 | case bp_thread_event: |
1900040c | 3045 | case bp_overlay_event: |
c4093a6a JM |
3046 | bs_class = bp_nostop; |
3047 | break; | |
c5aa993b JM |
3048 | case bp_catch_load: |
3049 | case bp_catch_unload: | |
3050 | /* Only if this catchpoint triggered should we cause the | |
3051 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3052 | catchpoint. */ | |
3053 | if (bs->stop) | |
3054 | bs_class = catch_shlib_event; | |
3055 | else | |
3056 | bs_class = no_effect; | |
3057 | break; | |
3058 | case bp_catch_fork: | |
3059 | case bp_catch_vfork: | |
3060 | case bp_catch_exec: | |
3061 | if (bs->stop) | |
3062 | { | |
3063 | if (bs->print) | |
3064 | bs_class = bp_noisy; | |
3065 | else | |
3066 | bs_class = bp_silent; | |
3067 | } | |
3068 | else | |
53a5351d JM |
3069 | /* There was a catchpoint, but we're not stopping. |
3070 | This requires no further action. */ | |
c5aa993b JM |
3071 | bs_class = no_effect; |
3072 | break; | |
3073 | case bp_catch_catch: | |
3074 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3075 | bs_class = bp_nostop; | |
3076 | else if (bs->stop) | |
3077 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3078 | break; | |
3079 | case bp_catch_throw: | |
3080 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3081 | bs_class = bp_nostop; | |
3082 | else if (bs->stop) | |
3083 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3084 | break; |
c906108c | 3085 | case bp_call_dummy: |
53a5351d JM |
3086 | /* Make sure the action is stop (silent or noisy), |
3087 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3088 | bs_class = bp_silent; |
3089 | retval.call_dummy = 1; | |
3090 | break; | |
3091 | } | |
c5aa993b | 3092 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3093 | } |
3094 | retval.main_action = current_action; | |
3095 | return retval; | |
3096 | } | |
3097 | ||
3098 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3099 | without hardware support). This isn't related to a specific bpstat, | |
3100 | just to things like whether watchpoints are set. */ | |
3101 | ||
c5aa993b | 3102 | int |
fba45db2 | 3103 | bpstat_should_step (void) |
c906108c SS |
3104 | { |
3105 | struct breakpoint *b; | |
3106 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 3107 | if (b->enable_state == bp_enabled && b->type == bp_watchpoint) |
3172dc30 | 3108 | return 1; |
c906108c SS |
3109 | return 0; |
3110 | } | |
3111 | ||
3112 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3113 | int | |
fba45db2 | 3114 | bpstat_have_active_hw_watchpoints (void) |
c906108c SS |
3115 | { |
3116 | struct breakpoint *b; | |
3117 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 3118 | if ((b->enable_state == bp_enabled) && |
c5aa993b JM |
3119 | (b->inserted) && |
3120 | ((b->type == bp_hardware_watchpoint) || | |
3121 | (b->type == bp_read_watchpoint) || | |
3122 | (b->type == bp_access_watchpoint))) | |
3172dc30 | 3123 | return 1; |
c906108c SS |
3124 | return 0; |
3125 | } | |
c906108c | 3126 | \f |
c5aa993b | 3127 | |
c906108c SS |
3128 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3129 | function returns another bpstat which contains only the catchpoints | |
3130 | on that first list, if any. */ | |
3131 | void | |
fba45db2 | 3132 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3133 | { |
3134 | struct bpstats root_bs[1]; | |
3135 | bpstat bs = root_bs; | |
3136 | struct breakpoint *ep; | |
3137 | char *dll_pathname; | |
3138 | ||
c906108c SS |
3139 | bpstat_clear (cp_list); |
3140 | root_bs->next = NULL; | |
c5aa993b JM |
3141 | |
3142 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3143 | { |
3144 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3145 | ep = ep_list->breakpoint_at; | |
3146 | if (ep == NULL) | |
c5aa993b JM |
3147 | break; |
3148 | if ((ep->type != bp_catch_load) && | |
3149 | (ep->type != bp_catch_unload) && | |
3150 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3151 | (ep->type != bp_catch_throw)) |
3152 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3153 | continue; |
3154 | ||
c906108c SS |
3155 | /* Yes; add it to the list. */ |
3156 | bs = bpstat_alloc (ep, bs); | |
3157 | *bs = *ep_list; | |
3158 | bs->next = NULL; | |
3159 | bs = root_bs->next; | |
c5aa993b | 3160 | |
c906108c SS |
3161 | #if defined(SOLIB_ADD) |
3162 | /* Also, for each triggered catchpoint, tag it with the name of | |
3163 | the library that caused this trigger. (We copy the name now, | |
3164 | because it's only guaranteed to be available NOW, when the | |
3165 | catchpoint triggers. Clients who may wish to know the name | |
3166 | later must get it from the catchpoint itself.) */ | |
3167 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3168 | xfree (ep->triggered_dll_pathname); |
c906108c | 3169 | if (ep->type == bp_catch_load) |
39f77062 KB |
3170 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3171 | PIDGET (inferior_ptid)); | |
c906108c | 3172 | else |
39f77062 KB |
3173 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3174 | PIDGET (inferior_ptid)); | |
c906108c SS |
3175 | #else |
3176 | dll_pathname = NULL; | |
3177 | #endif | |
3178 | if (dll_pathname) | |
3179 | { | |
53a5351d JM |
3180 | ep->triggered_dll_pathname = (char *) |
3181 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3182 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3183 | } | |
3184 | else | |
3185 | ep->triggered_dll_pathname = NULL; | |
3186 | } | |
c5aa993b | 3187 | |
c906108c SS |
3188 | *cp_list = bs; |
3189 | } | |
3190 | ||
c4093a6a | 3191 | /* Print B to gdb_stdout. */ |
c906108c | 3192 | static void |
c4093a6a JM |
3193 | print_one_breakpoint (struct breakpoint *b, |
3194 | CORE_ADDR *last_addr) | |
c906108c | 3195 | { |
c906108c SS |
3196 | register struct command_line *l; |
3197 | register struct symbol *sym; | |
c4093a6a JM |
3198 | struct ep_type_description |
3199 | { | |
3200 | enum bptype type; | |
3201 | char *description; | |
3202 | }; | |
3203 | static struct ep_type_description bptypes[] = | |
c906108c | 3204 | { |
c5aa993b JM |
3205 | {bp_none, "?deleted?"}, |
3206 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3207 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3208 | {bp_until, "until"}, |
3209 | {bp_finish, "finish"}, | |
3210 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3211 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3212 | {bp_read_watchpoint, "read watchpoint"}, |
3213 | {bp_access_watchpoint, "acc watchpoint"}, | |
3214 | {bp_longjmp, "longjmp"}, | |
3215 | {bp_longjmp_resume, "longjmp resume"}, | |
3216 | {bp_step_resume, "step resume"}, | |
3217 | {bp_through_sigtramp, "sigtramp"}, | |
3218 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3219 | {bp_call_dummy, "call dummy"}, | |
3220 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3221 | {bp_thread_event, "thread events"}, |
1900040c | 3222 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3223 | {bp_catch_load, "catch load"}, |
3224 | {bp_catch_unload, "catch unload"}, | |
3225 | {bp_catch_fork, "catch fork"}, | |
3226 | {bp_catch_vfork, "catch vfork"}, | |
3227 | {bp_catch_exec, "catch exec"}, | |
3228 | {bp_catch_catch, "catch catch"}, | |
3229 | {bp_catch_throw, "catch throw"} | |
3230 | }; | |
c4093a6a | 3231 | |
c5aa993b JM |
3232 | static char *bpdisps[] = |
3233 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3234 | static char bpenables[] = "nynny"; |
c906108c | 3235 | char wrap_indent[80]; |
8b93c638 JM |
3236 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3237 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
c906108c | 3238 | |
c4093a6a | 3239 | annotate_record (); |
666547aa | 3240 | ui_out_tuple_begin (uiout, "bkpt"); |
c4093a6a JM |
3241 | |
3242 | /* 1 */ | |
3243 | annotate_field (0); | |
8b93c638 | 3244 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3245 | |
3246 | /* 2 */ | |
3247 | annotate_field (1); | |
3248 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3249 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3250 | internal_error (__FILE__, __LINE__, |
3251 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3252 | (int) b->type); |
8b93c638 | 3253 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3254 | |
3255 | /* 3 */ | |
3256 | annotate_field (2); | |
8b93c638 | 3257 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3258 | |
3259 | /* 4 */ | |
3260 | annotate_field (3); | |
b5de0fa7 | 3261 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3262 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3263 | |
3264 | /* 5 and 6 */ | |
3265 | strcpy (wrap_indent, " "); | |
3266 | if (addressprint) | |
75ac9d7b MS |
3267 | { |
3268 | if (TARGET_ADDR_BIT <= 32) | |
3269 | strcat (wrap_indent, " "); | |
3270 | else | |
3271 | strcat (wrap_indent, " "); | |
3272 | } | |
c4093a6a | 3273 | switch (b->type) |
c5aa993b | 3274 | { |
c4093a6a | 3275 | case bp_none: |
8e65ff28 AC |
3276 | internal_error (__FILE__, __LINE__, |
3277 | "print_one_breakpoint: bp_none encountered\n"); | |
c4093a6a | 3278 | break; |
c906108c | 3279 | |
c4093a6a JM |
3280 | case bp_watchpoint: |
3281 | case bp_hardware_watchpoint: | |
3282 | case bp_read_watchpoint: | |
3283 | case bp_access_watchpoint: | |
3284 | /* Field 4, the address, is omitted (which makes the columns | |
3285 | not line up too nicely with the headers, but the effect | |
3286 | is relatively readable). */ | |
8b93c638 JM |
3287 | if (addressprint) |
3288 | ui_out_field_skip (uiout, "addr"); | |
3289 | annotate_field (5); | |
3290 | print_expression (b->exp, stb->stream); | |
3291 | ui_out_field_stream (uiout, "what", stb); | |
c4093a6a JM |
3292 | break; |
3293 | ||
3294 | case bp_catch_load: | |
3295 | case bp_catch_unload: | |
3296 | /* Field 4, the address, is omitted (which makes the columns | |
3297 | not line up too nicely with the headers, but the effect | |
3298 | is relatively readable). */ | |
8b93c638 JM |
3299 | if (addressprint) |
3300 | ui_out_field_skip (uiout, "addr"); | |
3301 | annotate_field (5); | |
3302 | if (b->dll_pathname == NULL) | |
3303 | { | |
3304 | ui_out_field_string (uiout, "what", "<any library>"); | |
3305 | ui_out_spaces (uiout, 1); | |
3306 | } | |
3307 | else | |
3308 | { | |
3309 | ui_out_text (uiout, "library \""); | |
3310 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3311 | ui_out_text (uiout, "\" "); | |
3312 | } | |
c4093a6a JM |
3313 | break; |
3314 | ||
3315 | case bp_catch_fork: | |
3316 | case bp_catch_vfork: | |
3317 | /* Field 4, the address, is omitted (which makes the columns | |
3318 | not line up too nicely with the headers, but the effect | |
3319 | is relatively readable). */ | |
8b93c638 JM |
3320 | if (addressprint) |
3321 | ui_out_field_skip (uiout, "addr"); | |
3322 | annotate_field (5); | |
3323 | if (b->forked_inferior_pid != 0) | |
3324 | { | |
3325 | ui_out_text (uiout, "process "); | |
3326 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3327 | ui_out_spaces (uiout, 1); | |
3328 | } | |
c4093a6a JM |
3329 | |
3330 | case bp_catch_exec: | |
3331 | /* Field 4, the address, is omitted (which makes the columns | |
3332 | not line up too nicely with the headers, but the effect | |
3333 | is relatively readable). */ | |
8b93c638 JM |
3334 | if (addressprint) |
3335 | ui_out_field_skip (uiout, "addr"); | |
3336 | annotate_field (5); | |
3337 | if (b->exec_pathname != NULL) | |
3338 | { | |
3339 | ui_out_text (uiout, "program \""); | |
3340 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3341 | ui_out_text (uiout, "\" "); | |
3342 | } | |
c4093a6a | 3343 | break; |
c906108c | 3344 | |
c4093a6a JM |
3345 | case bp_catch_catch: |
3346 | /* Field 4, the address, is omitted (which makes the columns | |
3347 | not line up too nicely with the headers, but the effect | |
3348 | is relatively readable). */ | |
8b93c638 JM |
3349 | if (addressprint) |
3350 | ui_out_field_skip (uiout, "addr"); | |
3351 | annotate_field (5); | |
3352 | ui_out_field_string (uiout, "what", "exception catch"); | |
3353 | ui_out_spaces (uiout, 1); | |
c4093a6a | 3354 | break; |
c906108c | 3355 | |
c4093a6a JM |
3356 | case bp_catch_throw: |
3357 | /* Field 4, the address, is omitted (which makes the columns | |
3358 | not line up too nicely with the headers, but the effect | |
3359 | is relatively readable). */ | |
8b93c638 JM |
3360 | if (addressprint) |
3361 | ui_out_field_skip (uiout, "addr"); | |
3362 | annotate_field (5); | |
3363 | ui_out_field_string (uiout, "what", "exception throw"); | |
3364 | ui_out_spaces (uiout, 1); | |
c4093a6a JM |
3365 | break; |
3366 | ||
3367 | case bp_breakpoint: | |
3368 | case bp_hardware_breakpoint: | |
3369 | case bp_until: | |
3370 | case bp_finish: | |
3371 | case bp_longjmp: | |
3372 | case bp_longjmp_resume: | |
3373 | case bp_step_resume: | |
3374 | case bp_through_sigtramp: | |
3375 | case bp_watchpoint_scope: | |
3376 | case bp_call_dummy: | |
3377 | case bp_shlib_event: | |
3378 | case bp_thread_event: | |
1900040c | 3379 | case bp_overlay_event: |
8b93c638 JM |
3380 | if (addressprint) |
3381 | { | |
3382 | annotate_field (4); | |
3383 | ui_out_field_core_addr (uiout, "addr", b->address); | |
3384 | } | |
3385 | annotate_field (5); | |
3386 | *last_addr = b->address; | |
3387 | if (b->source_file) | |
3388 | { | |
3389 | sym = find_pc_sect_function (b->address, b->section); | |
3390 | if (sym) | |
3391 | { | |
3392 | ui_out_text (uiout, "in "); | |
3393 | ui_out_field_string (uiout, "func", | |
3394 | SYMBOL_SOURCE_NAME (sym)); | |
3395 | ui_out_wrap_hint (uiout, wrap_indent); | |
3396 | ui_out_text (uiout, " at "); | |
3397 | } | |
3398 | ui_out_field_string (uiout, "file", b->source_file); | |
3399 | ui_out_text (uiout, ":"); | |
3400 | ui_out_field_int (uiout, "line", b->line_number); | |
3401 | } | |
3402 | else | |
3403 | { | |
3404 | print_address_symbolic (b->address, stb->stream, demangle, ""); | |
3405 | ui_out_field_stream (uiout, "at", stb); | |
3406 | } | |
c4093a6a JM |
3407 | break; |
3408 | } | |
3409 | ||
3410 | if (b->thread != -1) | |
3411 | { | |
8b93c638 JM |
3412 | /* FIXME: This seems to be redundant and lost here; see the |
3413 | "stop only in" line a little further down. */ | |
3414 | ui_out_text (uiout, " thread "); | |
3415 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3416 | } |
3417 | ||
8b93c638 | 3418 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3419 | |
3420 | if (b->frame) | |
3421 | { | |
3422 | annotate_field (6); | |
8b93c638 JM |
3423 | ui_out_text (uiout, "\tstop only in stack frame at "); |
3424 | ui_out_field_core_addr (uiout, "frame", b->frame); | |
3425 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3426 | } |
3427 | ||
3428 | if (b->cond) | |
3429 | { | |
3430 | annotate_field (7); | |
8b93c638 JM |
3431 | ui_out_text (uiout, "\tstop only if "); |
3432 | print_expression (b->cond, stb->stream); | |
3433 | ui_out_field_stream (uiout, "cond", stb); | |
3434 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3435 | } |
3436 | ||
3437 | if (b->thread != -1) | |
3438 | { | |
3439 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3440 | ui_out_text (uiout, "\tstop only in thread "); |
3441 | ui_out_field_int (uiout, "thread", b->thread); | |
3442 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3443 | } |
3444 | ||
3445 | if (show_breakpoint_hit_counts && b->hit_count) | |
3446 | { | |
3447 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3448 | if (ep_is_catchpoint (b)) |
3449 | ui_out_text (uiout, "\tcatchpoint"); | |
3450 | else | |
3451 | ui_out_text (uiout, "\tbreakpoint"); | |
3452 | ui_out_text (uiout, " already hit "); | |
3453 | ui_out_field_int (uiout, "times", b->hit_count); | |
3454 | if (b->hit_count == 1) | |
3455 | ui_out_text (uiout, " time\n"); | |
3456 | else | |
3457 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3458 | } |
3459 | ||
fb40c209 AC |
3460 | /* Output the count also if it is zero, but only if this is |
3461 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3462 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3463 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3464 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3465 | |
c4093a6a JM |
3466 | if (b->ignore_count) |
3467 | { | |
3468 | annotate_field (8); | |
8b93c638 JM |
3469 | ui_out_text (uiout, "\tignore next "); |
3470 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3471 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3472 | } |
3473 | ||
3474 | if ((l = b->commands)) | |
3475 | { | |
3476 | annotate_field (9); | |
666547aa | 3477 | ui_out_tuple_begin (uiout, "script"); |
8b93c638 | 3478 | print_command_lines (uiout, l, 4); |
666547aa | 3479 | ui_out_tuple_end (uiout); |
c4093a6a | 3480 | } |
666547aa | 3481 | ui_out_tuple_end (uiout); |
8b93c638 | 3482 | do_cleanups (old_chain); |
c4093a6a | 3483 | } |
c5aa993b | 3484 | |
c4093a6a JM |
3485 | struct captured_breakpoint_query_args |
3486 | { | |
3487 | int bnum; | |
3488 | }; | |
c5aa993b | 3489 | |
c4093a6a | 3490 | static int |
2b65245e | 3491 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3492 | { |
3493 | struct captured_breakpoint_query_args *args = data; | |
3494 | register struct breakpoint *b; | |
3495 | CORE_ADDR dummy_addr = 0; | |
3496 | ALL_BREAKPOINTS (b) | |
3497 | { | |
3498 | if (args->bnum == b->number) | |
c5aa993b | 3499 | { |
c4093a6a JM |
3500 | print_one_breakpoint (b, &dummy_addr); |
3501 | return GDB_RC_OK; | |
c5aa993b | 3502 | } |
c4093a6a JM |
3503 | } |
3504 | return GDB_RC_NONE; | |
3505 | } | |
c5aa993b | 3506 | |
c4093a6a | 3507 | enum gdb_rc |
2b65245e | 3508 | gdb_breakpoint_query (struct ui_out *uiout, int bnum) |
c4093a6a JM |
3509 | { |
3510 | struct captured_breakpoint_query_args args; | |
3511 | args.bnum = bnum; | |
3512 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3513 | an error. */ | |
2b65245e AC |
3514 | return catch_exceptions (uiout, do_captured_breakpoint_query, &args, |
3515 | NULL, RETURN_MASK_ALL); | |
c4093a6a | 3516 | } |
c5aa993b | 3517 | |
7f3b0473 AC |
3518 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3519 | catchpoints, et.al.). */ | |
3520 | ||
3521 | static int | |
3522 | user_settable_breakpoint (const struct breakpoint *b) | |
3523 | { | |
3524 | return (b->type == bp_breakpoint | |
3525 | || b->type == bp_catch_load | |
3526 | || b->type == bp_catch_unload | |
3527 | || b->type == bp_catch_fork | |
3528 | || b->type == bp_catch_vfork | |
3529 | || b->type == bp_catch_exec | |
3530 | || b->type == bp_catch_catch | |
3531 | || b->type == bp_catch_throw | |
3532 | || b->type == bp_hardware_breakpoint | |
3533 | || b->type == bp_watchpoint | |
3534 | || b->type == bp_read_watchpoint | |
3535 | || b->type == bp_access_watchpoint | |
3536 | || b->type == bp_hardware_watchpoint); | |
3537 | } | |
3538 | ||
3539 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3540 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3541 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3542 | |
c4093a6a | 3543 | static void |
fba45db2 | 3544 | breakpoint_1 (int bnum, int allflag) |
c4093a6a JM |
3545 | { |
3546 | register struct breakpoint *b; | |
3547 | CORE_ADDR last_addr = (CORE_ADDR) -1; | |
7f3b0473 | 3548 | int nr_printable_breakpoints; |
c4093a6a | 3549 | |
7f3b0473 AC |
3550 | /* Compute the number of rows in the table. */ |
3551 | nr_printable_breakpoints = 0; | |
3552 | ALL_BREAKPOINTS (b) | |
3553 | if (bnum == -1 | |
3554 | || bnum == b->number) | |
3555 | { | |
3556 | if (allflag || user_settable_breakpoint (b)) | |
3557 | nr_printable_breakpoints++; | |
3558 | } | |
3559 | ||
8b93c638 | 3560 | if (addressprint) |
d63f1d40 | 3561 | ui_out_table_begin (uiout, 6, nr_printable_breakpoints, "BreakpointTable"); |
8b93c638 | 3562 | else |
d63f1d40 | 3563 | ui_out_table_begin (uiout, 5, nr_printable_breakpoints, "BreakpointTable"); |
8b93c638 | 3564 | |
7f3b0473 | 3565 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3566 | annotate_breakpoints_headers (); |
3567 | if (nr_printable_breakpoints > 0) | |
3568 | annotate_field (0); | |
3569 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3570 | if (nr_printable_breakpoints > 0) | |
3571 | annotate_field (1); | |
3572 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3573 | if (nr_printable_breakpoints > 0) | |
3574 | annotate_field (2); | |
3575 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3576 | if (nr_printable_breakpoints > 0) | |
3577 | annotate_field (3); | |
3578 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3579 | if (addressprint) | |
7f3b0473 | 3580 | { |
d7faa9e7 AC |
3581 | if (nr_printable_breakpoints > 0) |
3582 | annotate_field (4); | |
7f3b0473 | 3583 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3584 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3585 | else |
b25959ec | 3586 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3587 | } |
d7faa9e7 AC |
3588 | if (nr_printable_breakpoints > 0) |
3589 | annotate_field (5); | |
3590 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3591 | ui_out_table_body (uiout); | |
3592 | if (nr_printable_breakpoints > 0) | |
3593 | annotate_breakpoints_table (); | |
7f3b0473 | 3594 | |
c4093a6a JM |
3595 | ALL_BREAKPOINTS (b) |
3596 | if (bnum == -1 | |
3597 | || bnum == b->number) | |
3598 | { | |
3599 | /* We only print out user settable breakpoints unless the | |
3600 | allflag is set. */ | |
7f3b0473 AC |
3601 | if (allflag || user_settable_breakpoint (b)) |
3602 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3603 | } |
3604 | ||
698384cd | 3605 | ui_out_table_end (uiout); |
698384cd | 3606 | |
7f3b0473 | 3607 | if (nr_printable_breakpoints == 0) |
c906108c | 3608 | { |
8b93c638 JM |
3609 | if (bnum == -1) |
3610 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3611 | else | |
3612 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3613 | bnum); | |
c906108c SS |
3614 | } |
3615 | else | |
c4093a6a JM |
3616 | { |
3617 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3618 | that a comparison of an unsigned with -1 is always false. */ | |
3619 | if (last_addr != (CORE_ADDR) -1) | |
3620 | set_next_address (last_addr); | |
3621 | } | |
c906108c | 3622 | |
c4093a6a JM |
3623 | /* FIXME? Should this be moved up so that it is only called when |
3624 | there have been breakpoints? */ | |
c906108c SS |
3625 | annotate_breakpoints_table_end (); |
3626 | } | |
3627 | ||
3628 | /* ARGSUSED */ | |
3629 | static void | |
fba45db2 | 3630 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3631 | { |
3632 | int bnum = -1; | |
3633 | ||
3634 | if (bnum_exp) | |
bb518678 | 3635 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3636 | |
3637 | breakpoint_1 (bnum, 0); | |
3638 | } | |
3639 | ||
c906108c | 3640 | /* ARGSUSED */ |
7a292a7a | 3641 | static void |
fba45db2 | 3642 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3643 | { |
3644 | int bnum = -1; | |
3645 | ||
3646 | if (bnum_exp) | |
bb518678 | 3647 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3648 | |
3649 | breakpoint_1 (bnum, 1); | |
3650 | } | |
3651 | ||
c906108c SS |
3652 | /* Print a message describing any breakpoints set at PC. */ |
3653 | ||
3654 | static void | |
fba45db2 | 3655 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c SS |
3656 | { |
3657 | register int others = 0; | |
3658 | register struct breakpoint *b; | |
3659 | ||
3660 | ALL_BREAKPOINTS (b) | |
9f04af04 MS |
3661 | if (b->address == pc) /* address match / overlay match */ |
3662 | if (!overlay_debugging || b->section == section) | |
3663 | others++; | |
c906108c SS |
3664 | if (others > 0) |
3665 | { | |
3666 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3667 | ALL_BREAKPOINTS (b) | |
9f04af04 MS |
3668 | if (b->address == pc) /* address match / overlay match */ |
3669 | if (!overlay_debugging || b->section == section) | |
3670 | { | |
3671 | others--; | |
3672 | printf_filtered ("%d%s%s ", | |
3673 | b->number, | |
3674 | ((b->enable_state == bp_disabled || | |
3675 | b->enable_state == bp_shlib_disabled || | |
3676 | b->enable_state == bp_call_disabled) | |
3677 | ? " (disabled)" | |
3678 | : b->enable_state == bp_permanent | |
3679 | ? " (permanent)" | |
3680 | : ""), | |
3681 | (others > 1) ? "," | |
3682 | : ((others == 1) ? " and" : "")); | |
3683 | } | |
c906108c SS |
3684 | printf_filtered ("also set at pc "); |
3685 | print_address_numeric (pc, 1, gdb_stdout); | |
3686 | printf_filtered (".\n"); | |
3687 | } | |
3688 | } | |
3689 | \f | |
3690 | /* Set the default place to put a breakpoint | |
3691 | for the `break' command with no arguments. */ | |
3692 | ||
3693 | void | |
fba45db2 KB |
3694 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3695 | int line) | |
c906108c SS |
3696 | { |
3697 | default_breakpoint_valid = valid; | |
3698 | default_breakpoint_address = addr; | |
3699 | default_breakpoint_symtab = symtab; | |
3700 | default_breakpoint_line = line; | |
3701 | } | |
3702 | ||
e4f237da KB |
3703 | /* Return true iff it is meaningful to use the address member of |
3704 | BPT. For some breakpoint types, the address member is irrelevant | |
3705 | and it makes no sense to attempt to compare it to other addresses | |
3706 | (or use it for any other purpose either). | |
3707 | ||
3708 | More specifically, each of the following breakpoint types will always | |
3709 | have a zero valued address and we don't want check_duplicates() to mark | |
3710 | breakpoints of any of these types to be a duplicate of an actual | |
3711 | breakpoint at address zero: | |
3712 | ||
3713 | bp_watchpoint | |
3714 | bp_hardware_watchpoint | |
3715 | bp_read_watchpoint | |
3716 | bp_access_watchpoint | |
3717 | bp_catch_exec | |
3718 | bp_longjmp_resume | |
3719 | bp_catch_fork | |
3720 | bp_catch_vork */ | |
3721 | ||
3722 | static int | |
3723 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3724 | { | |
3725 | enum bptype type = bpt->type; | |
3726 | ||
3727 | return (type != bp_watchpoint | |
3728 | && type != bp_hardware_watchpoint | |
3729 | && type != bp_read_watchpoint | |
3730 | && type != bp_access_watchpoint | |
3731 | && type != bp_catch_exec | |
3732 | && type != bp_longjmp_resume | |
3733 | && type != bp_catch_fork | |
3734 | && type != bp_catch_vfork); | |
3735 | } | |
3736 | ||
9f60f21b | 3737 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3738 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3739 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3740 | If we have a permanent breakpoint at the same place as BPT, make |
3741 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3742 | |
3743 | static void | |
9f60f21b | 3744 | check_duplicates (struct breakpoint *bpt) |
c906108c SS |
3745 | { |
3746 | register struct breakpoint *b; | |
3747 | register int count = 0; | |
c2c6d25f | 3748 | struct breakpoint *perm_bp = 0; |
9f60f21b JB |
3749 | CORE_ADDR address = bpt->address; |
3750 | asection *section = bpt->section; | |
c906108c | 3751 | |
e4f237da | 3752 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3753 | return; |
3754 | ||
3755 | ALL_BREAKPOINTS (b) | |
b5de0fa7 EZ |
3756 | if (b->enable_state != bp_disabled |
3757 | && b->enable_state != bp_shlib_disabled | |
3758 | && b->enable_state != bp_call_disabled | |
9f04af04 MS |
3759 | && b->address == address /* address / overlay match */ |
3760 | && (!overlay_debugging || b->section == section) | |
e4f237da | 3761 | && breakpoint_address_is_meaningful (b)) |
c5aa993b | 3762 | { |
c2c6d25f | 3763 | /* Have we found a permanent breakpoint? */ |
b5de0fa7 | 3764 | if (b->enable_state == bp_permanent) |
c2c6d25f JM |
3765 | { |
3766 | perm_bp = b; | |
3767 | break; | |
3768 | } | |
3769 | ||
c5aa993b JM |
3770 | count++; |
3771 | b->duplicate = count > 1; | |
3772 | } | |
c2c6d25f JM |
3773 | |
3774 | /* If we found a permanent breakpoint at this address, go over the | |
3775 | list again and declare all the other breakpoints there to be the | |
3776 | duplicates. */ | |
3777 | if (perm_bp) | |
3778 | { | |
3779 | perm_bp->duplicate = 0; | |
3780 | ||
3781 | /* Permanent breakpoint should always be inserted. */ | |
3782 | if (! perm_bp->inserted) | |
8e65ff28 AC |
3783 | internal_error (__FILE__, __LINE__, |
3784 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3785 | "actually inserted"); |
3786 | ||
3787 | ALL_BREAKPOINTS (b) | |
3788 | if (b != perm_bp) | |
3789 | { | |
3790 | if (b->inserted) | |
8e65ff28 AC |
3791 | internal_error (__FILE__, __LINE__, |
3792 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
3793 | "a permanent breakpoint"); |
3794 | ||
b5de0fa7 EZ |
3795 | if (b->enable_state != bp_disabled |
3796 | && b->enable_state != bp_shlib_disabled | |
3797 | && b->enable_state != bp_call_disabled | |
9f04af04 MS |
3798 | && b->address == address /* address / overlay match */ |
3799 | && (!overlay_debugging || b->section == section) | |
e4f237da | 3800 | && breakpoint_address_is_meaningful (b)) |
c2c6d25f JM |
3801 | b->duplicate = 1; |
3802 | } | |
3803 | } | |
c906108c SS |
3804 | } |
3805 | ||
4d28f7a8 KB |
3806 | /* set_raw_breakpoint() is a low level routine for allocating and |
3807 | partially initializing a breakpoint of type BPTYPE. The newly | |
3808 | created breakpoint's address, section, source file name, and line | |
3809 | number are provided by SAL. The newly created and partially | |
3810 | initialized breakpoint is added to the breakpoint chain and | |
3811 | is also returned as the value of this function. | |
c906108c | 3812 | |
4d28f7a8 KB |
3813 | It is expected that the caller will complete the initialization of |
3814 | the newly created breakpoint struct as well as output any status | |
3815 | information regarding the creation of a new breakpoint. In | |
3816 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
3817 | number! Care should be taken to not allow an error() to occur | |
3818 | prior to completing the initialization of the breakpoint. If this | |
3819 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
3820 | |
3821 | struct breakpoint * | |
4d28f7a8 | 3822 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c SS |
3823 | { |
3824 | register struct breakpoint *b, *b1; | |
3825 | ||
3826 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3827 | memset (b, 0, sizeof (*b)); | |
3828 | b->address = sal.pc; | |
3829 | if (sal.symtab == NULL) | |
3830 | b->source_file = NULL; | |
3831 | else | |
3832 | b->source_file = savestring (sal.symtab->filename, | |
3833 | strlen (sal.symtab->filename)); | |
3834 | b->section = sal.section; | |
4d28f7a8 | 3835 | b->type = bptype; |
c906108c SS |
3836 | b->language = current_language->la_language; |
3837 | b->input_radix = input_radix; | |
3838 | b->thread = -1; | |
3839 | b->line_number = sal.line; | |
b5de0fa7 | 3840 | b->enable_state = bp_enabled; |
c906108c SS |
3841 | b->next = 0; |
3842 | b->silent = 0; | |
3843 | b->ignore_count = 0; | |
3844 | b->commands = NULL; | |
3845 | b->frame = 0; | |
3846 | b->dll_pathname = NULL; | |
3847 | b->triggered_dll_pathname = NULL; | |
3848 | b->forked_inferior_pid = 0; | |
3849 | b->exec_pathname = NULL; | |
3850 | ||
3851 | /* Add this breakpoint to the end of the chain | |
3852 | so that a list of breakpoints will come out in order | |
3853 | of increasing numbers. */ | |
3854 | ||
3855 | b1 = breakpoint_chain; | |
3856 | if (b1 == 0) | |
3857 | breakpoint_chain = b; | |
3858 | else | |
3859 | { | |
3860 | while (b1->next) | |
3861 | b1 = b1->next; | |
3862 | b1->next = b; | |
3863 | } | |
3864 | ||
9f60f21b | 3865 | check_duplicates (b); |
c906108c SS |
3866 | breakpoints_changed (); |
3867 | ||
3868 | return b; | |
3869 | } | |
3870 | ||
c2c6d25f JM |
3871 | |
3872 | /* Note that the breakpoint object B describes a permanent breakpoint | |
3873 | instruction, hard-wired into the inferior's code. */ | |
3874 | void | |
3875 | make_breakpoint_permanent (struct breakpoint *b) | |
3876 | { | |
b5de0fa7 | 3877 | b->enable_state = bp_permanent; |
c2c6d25f JM |
3878 | |
3879 | /* By definition, permanent breakpoints are already present in the code. */ | |
3880 | b->inserted = 1; | |
3881 | } | |
3882 | ||
1900040c MS |
3883 | static struct breakpoint * |
3884 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
3885 | { | |
3886 | static int internal_breakpoint_number = -1; | |
3887 | struct symtab_and_line sal; | |
3888 | struct breakpoint *b; | |
3889 | ||
fe39c653 | 3890 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
3891 | |
3892 | sal.pc = address; | |
3893 | sal.section = find_pc_overlay (sal.pc); | |
3894 | ||
3895 | b = set_raw_breakpoint (sal, type); | |
3896 | b->number = internal_breakpoint_number--; | |
3897 | b->disposition = disp_donttouch; | |
3898 | ||
3899 | return b; | |
3900 | } | |
3901 | ||
c906108c SS |
3902 | |
3903 | static void | |
fba45db2 | 3904 | create_longjmp_breakpoint (char *func_name) |
c906108c | 3905 | { |
c906108c | 3906 | struct breakpoint *b; |
1900040c | 3907 | struct minimal_symbol *m; |
c906108c | 3908 | |
1900040c MS |
3909 | if (func_name == NULL) |
3910 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
3911 | else | |
c906108c | 3912 | { |
1900040c | 3913 | if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL) |
c906108c | 3914 | return; |
1900040c MS |
3915 | |
3916 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 3917 | } |
c906108c | 3918 | |
b5de0fa7 | 3919 | b->enable_state = bp_disabled; |
c906108c SS |
3920 | b->silent = 1; |
3921 | if (func_name) | |
4fcf66da | 3922 | b->addr_string = xstrdup (func_name); |
c906108c SS |
3923 | } |
3924 | ||
53a5351d JM |
3925 | /* Call this routine when stepping and nexting to enable a breakpoint |
3926 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3927 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3928 | ||
3929 | void | |
fba45db2 | 3930 | enable_longjmp_breakpoint (void) |
c906108c SS |
3931 | { |
3932 | register struct breakpoint *b; | |
3933 | ||
3934 | ALL_BREAKPOINTS (b) | |
3935 | if (b->type == bp_longjmp) | |
c5aa993b | 3936 | { |
b5de0fa7 | 3937 | b->enable_state = bp_enabled; |
9f60f21b | 3938 | check_duplicates (b); |
c5aa993b | 3939 | } |
c906108c SS |
3940 | } |
3941 | ||
3942 | void | |
fba45db2 | 3943 | disable_longjmp_breakpoint (void) |
c906108c SS |
3944 | { |
3945 | register struct breakpoint *b; | |
3946 | ||
3947 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3948 | if (b->type == bp_longjmp |
c906108c | 3949 | || b->type == bp_longjmp_resume) |
c5aa993b | 3950 | { |
b5de0fa7 | 3951 | b->enable_state = bp_disabled; |
9f60f21b | 3952 | check_duplicates (b); |
c5aa993b | 3953 | } |
c906108c SS |
3954 | } |
3955 | ||
1900040c MS |
3956 | static void |
3957 | create_overlay_event_breakpoint (char *func_name) | |
3958 | { | |
3959 | struct breakpoint *b; | |
3960 | struct minimal_symbol *m; | |
3961 | ||
3962 | if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL) | |
3963 | return; | |
3964 | ||
3965 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
3966 | bp_overlay_event); | |
3967 | b->addr_string = xstrdup (func_name); | |
3968 | ||
3969 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
3970 | { |
3971 | b->enable_state = bp_enabled; | |
3972 | overlay_events_enabled = 1; | |
3973 | } | |
1900040c | 3974 | else |
c02f5703 MS |
3975 | { |
3976 | b->enable_state = bp_disabled; | |
3977 | overlay_events_enabled = 0; | |
3978 | } | |
1900040c MS |
3979 | } |
3980 | ||
3981 | void | |
3982 | enable_overlay_breakpoints (void) | |
3983 | { | |
3984 | register struct breakpoint *b; | |
3985 | ||
3986 | ALL_BREAKPOINTS (b) | |
3987 | if (b->type == bp_overlay_event) | |
3988 | { | |
3989 | b->enable_state = bp_enabled; | |
3990 | check_duplicates (b); | |
c02f5703 | 3991 | overlay_events_enabled = 1; |
1900040c MS |
3992 | } |
3993 | } | |
3994 | ||
3995 | void | |
3996 | disable_overlay_breakpoints (void) | |
3997 | { | |
3998 | register struct breakpoint *b; | |
3999 | ||
4000 | ALL_BREAKPOINTS (b) | |
4001 | if (b->type == bp_overlay_event) | |
4002 | { | |
4003 | b->enable_state = bp_disabled; | |
4004 | check_duplicates (b); | |
c02f5703 | 4005 | overlay_events_enabled = 0; |
1900040c MS |
4006 | } |
4007 | } | |
4008 | ||
c4093a6a | 4009 | struct breakpoint * |
fba45db2 | 4010 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4011 | { |
4012 | struct breakpoint *b; | |
c4093a6a | 4013 | |
1900040c | 4014 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4015 | |
b5de0fa7 | 4016 | b->enable_state = bp_enabled; |
c4093a6a | 4017 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
d8ef46f5 | 4018 | xasprintf (&b->addr_string, "*0x%s", paddr (b->address)); |
c4093a6a JM |
4019 | |
4020 | return b; | |
4021 | } | |
4022 | ||
4023 | void | |
4024 | remove_thread_event_breakpoints (void) | |
4025 | { | |
4026 | struct breakpoint *b, *temp; | |
4027 | ||
4028 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4029 | if (b->type == bp_thread_event) | |
4030 | delete_breakpoint (b); | |
4031 | } | |
4032 | ||
c906108c SS |
4033 | #ifdef SOLIB_ADD |
4034 | void | |
fba45db2 | 4035 | remove_solib_event_breakpoints (void) |
c906108c SS |
4036 | { |
4037 | register struct breakpoint *b, *temp; | |
4038 | ||
4039 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4040 | if (b->type == bp_shlib_event) | |
3172dc30 | 4041 | delete_breakpoint (b); |
c906108c SS |
4042 | } |
4043 | ||
c2c6d25f | 4044 | struct breakpoint * |
fba45db2 | 4045 | create_solib_event_breakpoint (CORE_ADDR address) |
c906108c SS |
4046 | { |
4047 | struct breakpoint *b; | |
c2c6d25f | 4048 | |
1900040c | 4049 | b = create_internal_breakpoint (address, bp_shlib_event); |
c2c6d25f | 4050 | return b; |
c906108c SS |
4051 | } |
4052 | ||
104c1213 JM |
4053 | /* Disable any breakpoints that are on code in shared libraries. Only |
4054 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4055 | ||
c906108c | 4056 | void |
fba45db2 | 4057 | disable_breakpoints_in_shlibs (int silent) |
c906108c | 4058 | { |
c5aa993b JM |
4059 | struct breakpoint *b; |
4060 | int disabled_shlib_breaks = 0; | |
c906108c SS |
4061 | |
4062 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4063 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4064 | { |
c906108c | 4065 | #if defined (PC_SOLIB) |
c5aa993b JM |
4066 | if (((b->type == bp_breakpoint) || |
4067 | (b->type == bp_hardware_breakpoint)) && | |
b5de0fa7 | 4068 | b->enable_state == bp_enabled && |
c5aa993b JM |
4069 | !b->duplicate && |
4070 | PC_SOLIB (b->address)) | |
4071 | { | |
b5de0fa7 | 4072 | b->enable_state = bp_shlib_disabled; |
c5aa993b JM |
4073 | if (!silent) |
4074 | { | |
4075 | if (!disabled_shlib_breaks) | |
4076 | { | |
4077 | target_terminal_ours_for_output (); | |
53a5351d | 4078 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
4079 | } |
4080 | disabled_shlib_breaks = 1; | |
53a5351d | 4081 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
4082 | } |
4083 | } | |
c906108c | 4084 | #endif |
c5aa993b | 4085 | } |
c906108c SS |
4086 | } |
4087 | ||
4088 | /* Try to reenable any breakpoints in shared libraries. */ | |
4089 | void | |
fba45db2 | 4090 | re_enable_breakpoints_in_shlibs (void) |
c906108c SS |
4091 | { |
4092 | struct breakpoint *b; | |
4093 | ||
4094 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 4095 | if (b->enable_state == bp_shlib_disabled) |
c5aa993b JM |
4096 | { |
4097 | char buf[1]; | |
c906108c | 4098 | |
c5aa993b JM |
4099 | /* Do not reenable the breakpoint if the shared library |
4100 | is still not mapped in. */ | |
4101 | if (target_read_memory (b->address, buf, 1) == 0) | |
b5de0fa7 | 4102 | b->enable_state = bp_enabled; |
c5aa993b | 4103 | } |
c906108c SS |
4104 | } |
4105 | ||
4106 | #endif | |
4107 | ||
4108 | static void | |
fba45db2 KB |
4109 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4110 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4111 | { |
c5aa993b | 4112 | struct breakpoint *b; |
c906108c | 4113 | struct symtabs_and_lines sals; |
c5aa993b JM |
4114 | struct cleanup *old_chain; |
4115 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4116 | char *addr_start = hookname; |
4117 | char *addr_end = NULL; | |
4118 | char **canonical = (char **) NULL; | |
4119 | int thread = -1; /* All threads. */ | |
4120 | ||
c906108c SS |
4121 | /* Set a breakpoint on the specified hook. */ |
4122 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
4123 | addr_end = hookname; | |
c5aa993b | 4124 | |
c906108c SS |
4125 | if (sals.nelts == 0) |
4126 | { | |
4127 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4128 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4129 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4130 | return; | |
4131 | } | |
4132 | if (sals.nelts != 1) | |
4133 | { | |
53a5351d | 4134 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4135 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4136 | return; | |
4137 | } | |
4138 | ||
53a5351d JM |
4139 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4140 | in case the following errors out. */ | |
b8c9b27d | 4141 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4142 | if (canonical != (char **) NULL) |
c906108c | 4143 | { |
b8c9b27d | 4144 | make_cleanup (xfree, canonical); |
c906108c SS |
4145 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4146 | if (canonical[0] != NULL) | |
b8c9b27d | 4147 | make_cleanup (xfree, canonical[0]); |
c906108c | 4148 | } |
c5aa993b | 4149 | |
c906108c | 4150 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4151 | |
c906108c | 4152 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4153 | if (canonical != (char **) NULL) |
c906108c | 4154 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4155 | |
4d28f7a8 | 4156 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4157 | set_breakpoint_count (breakpoint_count + 1); |
4158 | b->number = breakpoint_count; | |
4159 | b->cond = NULL; | |
53a5351d JM |
4160 | b->cond_string = (cond_string == NULL) ? |
4161 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4162 | b->thread = thread; |
c5aa993b JM |
4163 | |
4164 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4165 | b->addr_string = canonical[0]; |
4166 | else if (addr_start) | |
4167 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4168 | |
b5de0fa7 EZ |
4169 | b->enable_state = bp_enabled; |
4170 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4171 | |
c906108c SS |
4172 | if (dll_pathname == NULL) |
4173 | b->dll_pathname = NULL; | |
4174 | else | |
4175 | { | |
4176 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4177 | strcpy (b->dll_pathname, dll_pathname); | |
4178 | } | |
c5aa993b | 4179 | |
c906108c SS |
4180 | mention (b); |
4181 | do_cleanups (old_chain); | |
4182 | } | |
4183 | ||
4184 | void | |
fba45db2 KB |
4185 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4186 | char *dll_pathname, char *cond_string) | |
c906108c | 4187 | { |
53a5351d JM |
4188 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4189 | cond_string, bp_catch_load); | |
c906108c SS |
4190 | } |
4191 | ||
4192 | void | |
fba45db2 KB |
4193 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4194 | char *dll_pathname, char *cond_string) | |
c906108c | 4195 | { |
53a5351d JM |
4196 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4197 | cond_string, bp_catch_unload); | |
c906108c SS |
4198 | } |
4199 | ||
4200 | static void | |
fba45db2 KB |
4201 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4202 | enum bptype bp_kind) | |
c906108c | 4203 | { |
c5aa993b JM |
4204 | struct symtab_and_line sal; |
4205 | struct breakpoint *b; | |
4206 | int thread = -1; /* All threads. */ | |
4207 | ||
fe39c653 | 4208 | init_sal (&sal); |
c906108c SS |
4209 | sal.pc = 0; |
4210 | sal.symtab = NULL; | |
4211 | sal.line = 0; | |
c5aa993b | 4212 | |
4d28f7a8 | 4213 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4214 | set_breakpoint_count (breakpoint_count + 1); |
4215 | b->number = breakpoint_count; | |
4216 | b->cond = NULL; | |
53a5351d JM |
4217 | b->cond_string = (cond_string == NULL) ? |
4218 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4219 | b->thread = thread; |
4220 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4221 | b->enable_state = bp_enabled; |
4222 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4223 | b->forked_inferior_pid = 0; |
c5aa993b | 4224 | |
c906108c SS |
4225 | mention (b); |
4226 | } | |
4227 | ||
4228 | void | |
fba45db2 | 4229 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4230 | { |
4231 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4232 | } | |
c5aa993b | 4233 | |
c906108c | 4234 | void |
fba45db2 | 4235 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4236 | { |
4237 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4238 | } | |
4239 | ||
4240 | void | |
fba45db2 | 4241 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4242 | { |
c5aa993b JM |
4243 | struct symtab_and_line sal; |
4244 | struct breakpoint *b; | |
4245 | int thread = -1; /* All threads. */ | |
c906108c | 4246 | |
fe39c653 | 4247 | init_sal (&sal); |
c906108c SS |
4248 | sal.pc = 0; |
4249 | sal.symtab = NULL; | |
4250 | sal.line = 0; | |
4251 | ||
4d28f7a8 | 4252 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4253 | set_breakpoint_count (breakpoint_count + 1); |
4254 | b->number = breakpoint_count; | |
4255 | b->cond = NULL; | |
53a5351d JM |
4256 | b->cond_string = (cond_string == NULL) ? |
4257 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4258 | b->thread = thread; |
4259 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4260 | b->enable_state = bp_enabled; |
4261 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4262 | |
c906108c SS |
4263 | mention (b); |
4264 | } | |
4265 | ||
4266 | static int | |
fba45db2 | 4267 | hw_breakpoint_used_count (void) |
c906108c SS |
4268 | { |
4269 | register struct breakpoint *b; | |
4270 | int i = 0; | |
4271 | ||
4272 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4273 | { |
b5de0fa7 | 4274 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4275 | i++; |
4276 | } | |
c906108c SS |
4277 | |
4278 | return i; | |
4279 | } | |
4280 | ||
4281 | static int | |
fba45db2 | 4282 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c SS |
4283 | { |
4284 | register struct breakpoint *b; | |
4285 | int i = 0; | |
4286 | ||
4287 | *other_type_used = 0; | |
4288 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4289 | { |
b5de0fa7 | 4290 | if (b->enable_state == bp_enabled) |
c5aa993b JM |
4291 | { |
4292 | if (b->type == type) | |
4293 | i++; | |
4294 | else if ((b->type == bp_hardware_watchpoint || | |
4295 | b->type == bp_read_watchpoint || | |
4296 | b->type == bp_access_watchpoint) | |
b5de0fa7 | 4297 | && b->enable_state == bp_enabled) |
c5aa993b JM |
4298 | *other_type_used = 1; |
4299 | } | |
4300 | } | |
c906108c SS |
4301 | return i; |
4302 | } | |
4303 | ||
53a5351d JM |
4304 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4305 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4306 | |
53a5351d JM |
4307 | FIXME - This ought to be done by setting a temporary breakpoint |
4308 | that gets deleted automatically... */ | |
c906108c SS |
4309 | |
4310 | void | |
fba45db2 | 4311 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_info *frame) |
c906108c SS |
4312 | { |
4313 | register struct breakpoint *b; | |
4314 | ||
4315 | ALL_BREAKPOINTS (b) | |
4316 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
4317 | { |
4318 | b->address = pc; | |
b5de0fa7 | 4319 | b->enable_state = bp_enabled; |
c5aa993b JM |
4320 | if (frame != NULL) |
4321 | b->frame = frame->frame; | |
4322 | else | |
4323 | b->frame = 0; | |
9f60f21b | 4324 | check_duplicates (b); |
c5aa993b JM |
4325 | return; |
4326 | } | |
c906108c SS |
4327 | } |
4328 | ||
4329 | void | |
fba45db2 | 4330 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4331 | { |
c5aa993b | 4332 | struct breakpoint *b; |
c906108c SS |
4333 | |
4334 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4335 | { |
4336 | if (((b->type == bp_watchpoint) | |
4337 | || (b->type == bp_hardware_watchpoint) | |
4338 | || (b->type == bp_read_watchpoint) | |
4339 | || (b->type == bp_access_watchpoint) | |
4340 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4341 | && (b->enable_state == bp_enabled)) |
c5aa993b | 4342 | { |
b5de0fa7 | 4343 | b->enable_state = bp_call_disabled; |
9f60f21b | 4344 | check_duplicates (b); |
c5aa993b JM |
4345 | } |
4346 | } | |
c906108c SS |
4347 | } |
4348 | ||
4349 | void | |
fba45db2 | 4350 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4351 | { |
c5aa993b | 4352 | struct breakpoint *b; |
c906108c SS |
4353 | |
4354 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4355 | { |
4356 | if (((b->type == bp_watchpoint) | |
4357 | || (b->type == bp_hardware_watchpoint) | |
4358 | || (b->type == bp_read_watchpoint) | |
4359 | || (b->type == bp_access_watchpoint) | |
4360 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4361 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4362 | { |
b5de0fa7 | 4363 | b->enable_state = bp_enabled; |
9f60f21b | 4364 | check_duplicates (b); |
c5aa993b JM |
4365 | } |
4366 | } | |
c906108c SS |
4367 | } |
4368 | ||
4369 | ||
4370 | /* Set a breakpoint that will evaporate an end of command | |
4371 | at address specified by SAL. | |
4372 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4373 | ||
4374 | struct breakpoint * | |
fba45db2 KB |
4375 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_info *frame, |
4376 | enum bptype type) | |
c906108c SS |
4377 | { |
4378 | register struct breakpoint *b; | |
4d28f7a8 | 4379 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4380 | b->enable_state = bp_enabled; |
4381 | b->disposition = disp_donttouch; | |
c906108c SS |
4382 | b->frame = (frame ? frame->frame : 0); |
4383 | ||
4384 | /* If we're debugging a multi-threaded program, then we | |
4385 | want momentary breakpoints to be active in only a | |
4386 | single thread of control. */ | |
39f77062 KB |
4387 | if (in_thread_list (inferior_ptid)) |
4388 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4389 | |
4390 | return b; | |
4391 | } | |
c906108c | 4392 | \f |
c5aa993b | 4393 | |
c906108c SS |
4394 | /* Tell the user we have just set a breakpoint B. */ |
4395 | ||
4396 | static void | |
fba45db2 | 4397 | mention (struct breakpoint *b) |
c906108c SS |
4398 | { |
4399 | int say_where = 0; | |
8b93c638 JM |
4400 | struct cleanup *old_chain; |
4401 | struct ui_stream *stb; | |
4402 | ||
4403 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4404 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
4405 | |
4406 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4407 | watchpoint) other than breakpoint creation. It should be possible to | |
4408 | clean this up and at the same time replace the random calls to | |
4409 | breakpoint_changed with this hook, as has already been done for | |
4410 | delete_breakpoint_hook and so on. */ | |
4411 | if (create_breakpoint_hook) | |
4412 | create_breakpoint_hook (b); | |
104c1213 | 4413 | breakpoint_create_event (b->number); |
c906108c SS |
4414 | |
4415 | switch (b->type) | |
4416 | { | |
4417 | case bp_none: | |
4418 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4419 | break; | |
8b93c638 JM |
4420 | case bp_watchpoint: |
4421 | ui_out_text (uiout, "Watchpoint "); | |
666547aa | 4422 | ui_out_tuple_begin (uiout, "wpt"); |
8b93c638 JM |
4423 | ui_out_field_int (uiout, "number", b->number); |
4424 | ui_out_text (uiout, ": "); | |
4425 | print_expression (b->exp, stb->stream); | |
4426 | ui_out_field_stream (uiout, "exp", stb); | |
666547aa | 4427 | ui_out_tuple_end (uiout); |
8b93c638 JM |
4428 | break; |
4429 | case bp_hardware_watchpoint: | |
4430 | ui_out_text (uiout, "Hardware watchpoint "); | |
666547aa | 4431 | ui_out_tuple_begin (uiout, "wpt"); |
8b93c638 JM |
4432 | ui_out_field_int (uiout, "number", b->number); |
4433 | ui_out_text (uiout, ": "); | |
4434 | print_expression (b->exp, stb->stream); | |
4435 | ui_out_field_stream (uiout, "exp", stb); | |
666547aa | 4436 | ui_out_tuple_end (uiout); |
8b93c638 | 4437 | break; |
8b93c638 JM |
4438 | case bp_read_watchpoint: |
4439 | ui_out_text (uiout, "Hardware read watchpoint "); | |
666547aa | 4440 | ui_out_tuple_begin (uiout, "hw-rwpt"); |
8b93c638 JM |
4441 | ui_out_field_int (uiout, "number", b->number); |
4442 | ui_out_text (uiout, ": "); | |
4443 | print_expression (b->exp, stb->stream); | |
4444 | ui_out_field_stream (uiout, "exp", stb); | |
666547aa | 4445 | ui_out_tuple_end (uiout); |
8b93c638 JM |
4446 | break; |
4447 | case bp_access_watchpoint: | |
4448 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
666547aa | 4449 | ui_out_tuple_begin (uiout, "hw-awpt"); |
8b93c638 JM |
4450 | ui_out_field_int (uiout, "number", b->number); |
4451 | ui_out_text (uiout, ": "); | |
4452 | print_expression (b->exp, stb->stream); | |
4453 | ui_out_field_stream (uiout, "exp", stb); | |
666547aa | 4454 | ui_out_tuple_end (uiout); |
8b93c638 | 4455 | break; |
c906108c | 4456 | case bp_breakpoint: |
9dc5e2a9 | 4457 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
4458 | { |
4459 | say_where = 0; | |
4460 | break; | |
4461 | } | |
c906108c SS |
4462 | printf_filtered ("Breakpoint %d", b->number); |
4463 | say_where = 1; | |
4464 | break; | |
4465 | case bp_hardware_breakpoint: | |
9dc5e2a9 | 4466 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
4467 | { |
4468 | say_where = 0; | |
4469 | break; | |
4470 | } | |
c906108c SS |
4471 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
4472 | say_where = 1; | |
4473 | break; | |
4474 | case bp_catch_load: | |
4475 | case bp_catch_unload: | |
4476 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
4477 | b->number, |
4478 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
4479 | (b->dll_pathname != NULL) ? |
4480 | b->dll_pathname : "<any library>"); | |
c906108c SS |
4481 | break; |
4482 | case bp_catch_fork: | |
4483 | case bp_catch_vfork: | |
4484 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4485 | b->number, |
4486 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
4487 | break; |
4488 | case bp_catch_exec: | |
4489 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 4490 | b->number); |
c906108c SS |
4491 | break; |
4492 | case bp_catch_catch: | |
4493 | case bp_catch_throw: | |
4494 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4495 | b->number, |
4496 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
4497 | break; |
4498 | ||
4499 | case bp_until: | |
4500 | case bp_finish: | |
4501 | case bp_longjmp: | |
4502 | case bp_longjmp_resume: | |
4503 | case bp_step_resume: | |
4504 | case bp_through_sigtramp: | |
4505 | case bp_call_dummy: | |
4506 | case bp_watchpoint_scope: | |
4507 | case bp_shlib_event: | |
c4093a6a | 4508 | case bp_thread_event: |
1900040c | 4509 | case bp_overlay_event: |
c906108c SS |
4510 | break; |
4511 | } | |
4512 | if (say_where) | |
4513 | { | |
4514 | if (addressprint || b->source_file == NULL) | |
4515 | { | |
4516 | printf_filtered (" at "); | |
4517 | print_address_numeric (b->address, 1, gdb_stdout); | |
4518 | } | |
4519 | if (b->source_file) | |
4520 | printf_filtered (": file %s, line %d.", | |
4521 | b->source_file, b->line_number); | |
c906108c | 4522 | } |
8b93c638 | 4523 | do_cleanups (old_chain); |
9dc5e2a9 | 4524 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4525 | return; |
c906108c SS |
4526 | printf_filtered ("\n"); |
4527 | } | |
c906108c | 4528 | \f |
c5aa993b | 4529 | |
c3f6f71d JM |
4530 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4531 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4532 | COND[i] and COND_STRING[i] values. | |
4533 | ||
4534 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4535 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4536 | array contents). If the function fails (error() is called), the | |
4537 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4538 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4539 | |
4540 | static void | |
c3f6f71d JM |
4541 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4542 | struct expression **cond, char **cond_string, | |
4543 | enum bptype type, enum bpdisp disposition, | |
4544 | int thread, int ignore_count, int from_tty) | |
c906108c | 4545 | { |
c3f6f71d JM |
4546 | if (type == bp_hardware_breakpoint) |
4547 | { | |
4548 | int i = hw_breakpoint_used_count (); | |
4549 | int target_resources_ok = | |
4550 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4551 | i + sals.nelts, 0); | |
4552 | if (target_resources_ok == 0) | |
4553 | error ("No hardware breakpoint support in the target."); | |
4554 | else if (target_resources_ok < 0) | |
4555 | error ("Hardware breakpoints used exceeds limit."); | |
4556 | } | |
c906108c | 4557 | |
c3f6f71d JM |
4558 | /* Now set all the breakpoints. */ |
4559 | { | |
4560 | int i; | |
4561 | for (i = 0; i < sals.nelts; i++) | |
4562 | { | |
4563 | struct breakpoint *b; | |
4564 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4565 | |
c3f6f71d JM |
4566 | if (from_tty) |
4567 | describe_other_breakpoints (sal.pc, sal.section); | |
4568 | ||
4d28f7a8 | 4569 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4570 | set_breakpoint_count (breakpoint_count + 1); |
4571 | b->number = breakpoint_count; | |
c3f6f71d JM |
4572 | b->cond = cond[i]; |
4573 | b->thread = thread; | |
d8ef46f5 DJ |
4574 | if (addr_string[i]) |
4575 | b->addr_string = addr_string[i]; | |
4576 | else | |
4577 | /* addr_string has to be used or breakpoint_re_set will delete | |
4578 | me. */ | |
4579 | xasprintf (&b->addr_string, "*0x%s", paddr (b->address)); | |
c3f6f71d JM |
4580 | b->cond_string = cond_string[i]; |
4581 | b->ignore_count = ignore_count; | |
b5de0fa7 | 4582 | b->enable_state = bp_enabled; |
c3f6f71d JM |
4583 | b->disposition = disposition; |
4584 | mention (b); | |
4585 | } | |
4586 | } | |
4587 | } | |
c906108c | 4588 | |
c3f6f71d JM |
4589 | /* Parse ARG which is assumed to be a SAL specification possibly |
4590 | followed by conditionals. On return, SALS contains an array of SAL | |
4591 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4592 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4593 | |
c3f6f71d JM |
4594 | void |
4595 | parse_breakpoint_sals (char **address, | |
4596 | struct symtabs_and_lines *sals, | |
4597 | char ***addr_string) | |
4598 | { | |
4599 | char *addr_start = *address; | |
4600 | *addr_string = NULL; | |
4601 | /* If no arg given, or if first arg is 'if ', use the default | |
4602 | breakpoint. */ | |
4603 | if ((*address) == NULL | |
4604 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4605 | { |
4606 | if (default_breakpoint_valid) | |
4607 | { | |
c3f6f71d | 4608 | struct symtab_and_line sal; |
fe39c653 | 4609 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 4610 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
4611 | xmalloc (sizeof (struct symtab_and_line)); |
4612 | sal.pc = default_breakpoint_address; | |
4613 | sal.line = default_breakpoint_line; | |
4614 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4615 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4616 | sals->sals[0] = sal; |
4617 | sals->nelts = 1; | |
c906108c SS |
4618 | } |
4619 | else | |
4620 | error ("No default breakpoint address now."); | |
4621 | } | |
4622 | else | |
4623 | { | |
c906108c | 4624 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4625 | current_source_symtab (which is decode_line_1's default). This |
4626 | should produce the results we want almost all of the time while | |
1aeae86e AF |
4627 | leaving default_breakpoint_* alone. |
4628 | ObjC: However, don't match an Objective-C method name which | |
4629 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 4630 | |
c214a6fd | 4631 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 4632 | |
c906108c | 4633 | if (default_breakpoint_valid |
0378c332 | 4634 | && (!cursal.symtab |
1aeae86e AF |
4635 | || ((strchr ("+-", (*address)[0]) != NULL) |
4636 | && ((*address)[1] != '[')))) | |
c3f6f71d JM |
4637 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
4638 | default_breakpoint_line, addr_string); | |
c906108c | 4639 | else |
389e51db | 4640 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); |
c906108c | 4641 | } |
c3f6f71d JM |
4642 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4643 | if (sals->nelts > 0 && *addr_string == NULL) | |
4644 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4645 | if (addr_start != (*address)) | |
c906108c | 4646 | { |
c3f6f71d JM |
4647 | int i; |
4648 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4649 | { |
c3f6f71d JM |
4650 | /* Add the string if not present. */ |
4651 | if ((*addr_string)[i] == NULL) | |
4652 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4653 | } |
4654 | } | |
c3f6f71d | 4655 | } |
c906108c | 4656 | |
c906108c | 4657 | |
c3f6f71d JM |
4658 | /* Convert each SAL into a real PC. Verify that the PC can be |
4659 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4660 | |
c3f6f71d JM |
4661 | void |
4662 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, | |
4663 | char *address) | |
4664 | { | |
4665 | int i; | |
4666 | for (i = 0; i < sals->nelts; i++) | |
4667 | { | |
4668 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4669 | |
4670 | /* It's possible for the PC to be nonzero, but still an illegal | |
4671 | value on some targets. | |
4672 | ||
4673 | For example, on HP-UX if you start gdb, and before running the | |
4674 | inferior you try to set a breakpoint on a shared library function | |
4675 | "foo" where the inferior doesn't call "foo" directly but does | |
4676 | pass its address to another function call, then we do find a | |
4677 | minimal symbol for the "foo", but it's address is invalid. | |
4678 | (Appears to be an index into a table that the loader sets up | |
4679 | when the inferior is run.) | |
4680 | ||
4681 | Give the target a chance to bless sals.sals[i].pc before we | |
4682 | try to make a breakpoint for it. */ | |
c3f6f71d | 4683 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4684 | { |
c3f6f71d JM |
4685 | if (address == NULL) |
4686 | error ("Cannot break without a running program."); | |
4687 | else | |
4688 | error ("Cannot break on %s without a running program.", | |
4689 | address); | |
c5aa993b | 4690 | } |
c3f6f71d JM |
4691 | } |
4692 | } | |
4693 | ||
4694 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4695 | flag: first bit : 0 non-temporary, 1 temporary. | |
4696 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4697 | |
c3f6f71d | 4698 | static void |
fba45db2 | 4699 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d JM |
4700 | { |
4701 | int tempflag, hardwareflag; | |
4702 | struct symtabs_and_lines sals; | |
4703 | register struct expression **cond = 0; | |
4704 | /* Pointers in arg to the start, and one past the end, of the | |
4705 | condition. */ | |
4706 | char **cond_string = (char **) NULL; | |
4707 | char *addr_start = arg; | |
4708 | char **addr_string; | |
4709 | struct cleanup *old_chain; | |
4710 | struct cleanup *breakpoint_chain = NULL; | |
4711 | int i; | |
4712 | int thread = -1; | |
4713 | int ignore_count = 0; | |
4714 | ||
4715 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4716 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4717 | |
c3f6f71d JM |
4718 | sals.sals = NULL; |
4719 | sals.nelts = 0; | |
4720 | addr_string = NULL; | |
4721 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4722 | ||
4723 | if (!sals.nelts) | |
4724 | return; | |
4725 | ||
4726 | /* Create a chain of things that always need to be cleaned up. */ | |
4727 | old_chain = make_cleanup (null_cleanup, 0); | |
4728 | ||
4729 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4730 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4731 | |
4732 | /* Cleanup the addr_string array but not its contents. */ | |
b8c9b27d | 4733 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4734 | |
4735 | /* Allocate space for all the cond expressions. */ | |
4736 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4737 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4738 | |
4739 | /* Allocate space for all the cond strings. */ | |
4740 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4741 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4742 | |
4743 | /* ----------------------------- SNIP ----------------------------- | |
4744 | Anything added to the cleanup chain beyond this point is assumed | |
4745 | to be part of a breakpoint. If the breakpoint create succeeds | |
4746 | then the memory is not reclaimed. */ | |
4747 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4748 | ||
4749 | /* Mark the contents of the addr_string for cleanup. These go on | |
4750 | the breakpoint_chain and only occure if the breakpoint create | |
4751 | fails. */ | |
4752 | for (i = 0; i < sals.nelts; i++) | |
4753 | { | |
4754 | if (addr_string[i] != NULL) | |
b8c9b27d | 4755 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
4756 | } |
4757 | ||
4758 | /* Resolve all line numbers to PC's and verify that the addresses | |
4759 | are ok for the target. */ | |
4760 | breakpoint_sals_to_pc (&sals, addr_start); | |
4761 | ||
4762 | /* Verify that condition can be parsed, before setting any | |
4763 | breakpoints. Allocate a separate condition expression for each | |
4764 | breakpoint. */ | |
4765 | thread = -1; /* No specific thread yet */ | |
4766 | for (i = 0; i < sals.nelts; i++) | |
4767 | { | |
4768 | char *tok = arg; | |
c906108c SS |
4769 | while (tok && *tok) |
4770 | { | |
c3f6f71d JM |
4771 | char *end_tok; |
4772 | int toklen; | |
4773 | char *cond_start = NULL; | |
4774 | char *cond_end = NULL; | |
c906108c SS |
4775 | while (*tok == ' ' || *tok == '\t') |
4776 | tok++; | |
4777 | ||
4778 | end_tok = tok; | |
4779 | ||
4780 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4781 | end_tok++; | |
4782 | ||
4783 | toklen = end_tok - tok; | |
4784 | ||
4785 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4786 | { | |
4787 | tok = cond_start = end_tok + 1; | |
c3f6f71d | 4788 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
b8c9b27d | 4789 | make_cleanup (xfree, cond[i]); |
c906108c | 4790 | cond_end = tok; |
c3f6f71d | 4791 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
b8c9b27d | 4792 | make_cleanup (xfree, cond_string[i]); |
c906108c SS |
4793 | } |
4794 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4795 | { | |
4796 | char *tmptok; | |
4797 | ||
4798 | tok = end_tok + 1; | |
4799 | tmptok = tok; | |
4800 | thread = strtol (tok, &tok, 0); | |
4801 | if (tok == tmptok) | |
4802 | error ("Junk after thread keyword."); | |
4803 | if (!valid_thread_id (thread)) | |
4804 | error ("Unknown thread %d\n", thread); | |
4805 | } | |
4806 | else | |
4807 | error ("Junk at end of arguments."); | |
4808 | } | |
4809 | } | |
c906108c | 4810 | |
c3f6f71d JM |
4811 | create_breakpoints (sals, addr_string, cond, cond_string, |
4812 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 4813 | tempflag ? disp_del : disp_donttouch, |
c3f6f71d JM |
4814 | thread, ignore_count, from_tty); |
4815 | ||
4816 | if (sals.nelts > 1) | |
4817 | { | |
4818 | warning ("Multiple breakpoints were set."); | |
4819 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4820 | } |
c3f6f71d JM |
4821 | /* That's it. Discard the cleanups for data inserted into the |
4822 | breakpoint. */ | |
4823 | discard_cleanups (breakpoint_chain); | |
4824 | /* But cleanup everything else. */ | |
4825 | do_cleanups (old_chain); | |
4826 | } | |
c906108c | 4827 | |
c3f6f71d JM |
4828 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
4829 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 4830 | |
c3f6f71d JM |
4831 | struct captured_breakpoint_args |
4832 | { | |
4833 | char *address; | |
4834 | char *condition; | |
4835 | int hardwareflag; | |
4836 | int tempflag; | |
4837 | int thread; | |
4838 | int ignore_count; | |
4839 | }; | |
4840 | ||
4841 | static int | |
4842 | do_captured_breakpoint (void *data) | |
4843 | { | |
4844 | struct captured_breakpoint_args *args = data; | |
4845 | struct symtabs_and_lines sals; | |
4846 | register struct expression **cond; | |
4847 | struct cleanup *old_chain; | |
4848 | struct cleanup *breakpoint_chain = NULL; | |
4849 | int i; | |
4850 | char **addr_string; | |
4851 | char **cond_string; | |
4852 | ||
4853 | char *address_end; | |
4854 | ||
4855 | /* Parse the source and lines spec. Delay check that the expression | |
4856 | didn't contain trailing garbage until after cleanups are in | |
4857 | place. */ | |
4858 | sals.sals = NULL; | |
4859 | sals.nelts = 0; | |
4860 | address_end = args->address; | |
4861 | addr_string = NULL; | |
4862 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
4863 | ||
4864 | if (!sals.nelts) | |
4865 | return GDB_RC_NONE; | |
4866 | ||
4867 | /* Create a chain of things at always need to be cleaned up. */ | |
4868 | old_chain = make_cleanup (null_cleanup, 0); | |
4869 | ||
4870 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 4871 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4872 | |
4873 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4874 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4875 | |
4876 | /* Allocate space for all the cond expressions. */ | |
4877 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4878 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4879 | |
4880 | /* Allocate space for all the cond strings. */ | |
4881 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4882 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4883 | |
4884 | /* ----------------------------- SNIP ----------------------------- | |
4885 | Anything added to the cleanup chain beyond this point is assumed | |
4886 | to be part of a breakpoint. If the breakpoint create goes | |
4887 | through then that memory is not cleaned up. */ | |
4888 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4889 | ||
4890 | /* Mark the contents of the addr_string for cleanup. These go on | |
4891 | the breakpoint_chain and only occure if the breakpoint create | |
4892 | fails. */ | |
c906108c SS |
4893 | for (i = 0; i < sals.nelts; i++) |
4894 | { | |
c3f6f71d | 4895 | if (addr_string[i] != NULL) |
b8c9b27d | 4896 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
4897 | } |
4898 | ||
c3f6f71d JM |
4899 | /* Wait until now before checking for garbage at the end of the |
4900 | address. That way cleanups can take care of freeing any | |
4901 | memory. */ | |
4902 | if (*address_end != '\0') | |
4903 | error ("Garbage %s following breakpoint address", address_end); | |
4904 | ||
4905 | /* Resolve all line numbers to PC's. */ | |
4906 | breakpoint_sals_to_pc (&sals, args->address); | |
4907 | ||
4908 | /* Verify that conditions can be parsed, before setting any | |
4909 | breakpoints. */ | |
4910 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 4911 | { |
c3f6f71d JM |
4912 | if (args->condition != NULL) |
4913 | { | |
4914 | char *tok = args->condition; | |
4915 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
4916 | if (*tok != '\0') | |
4917 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 4918 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
4919 | cond_string[i] = xstrdup (args->condition); |
4920 | } | |
c906108c | 4921 | } |
c3f6f71d JM |
4922 | |
4923 | create_breakpoints (sals, addr_string, cond, cond_string, | |
4924 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 4925 | args->tempflag ? disp_del : disp_donttouch, |
c3f6f71d JM |
4926 | args->thread, args->ignore_count, 0/*from-tty*/); |
4927 | ||
4928 | /* That's it. Discard the cleanups for data inserted into the | |
4929 | breakpoint. */ | |
4930 | discard_cleanups (breakpoint_chain); | |
4931 | /* But cleanup everything else. */ | |
c906108c | 4932 | do_cleanups (old_chain); |
c3f6f71d | 4933 | return GDB_RC_OK; |
c906108c SS |
4934 | } |
4935 | ||
c3f6f71d JM |
4936 | enum gdb_rc |
4937 | gdb_breakpoint (char *address, char *condition, | |
4938 | int hardwareflag, int tempflag, | |
4939 | int thread, int ignore_count) | |
4940 | { | |
4941 | struct captured_breakpoint_args args; | |
4942 | args.address = address; | |
4943 | args.condition = condition; | |
4944 | args.hardwareflag = hardwareflag; | |
4945 | args.tempflag = tempflag; | |
4946 | args.thread = thread; | |
4947 | args.ignore_count = ignore_count; | |
4948 | return catch_errors (do_captured_breakpoint, &args, | |
4949 | NULL, RETURN_MASK_ALL); | |
4950 | } | |
4951 | ||
4952 | ||
c906108c | 4953 | static void |
fba45db2 | 4954 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
4955 | { |
4956 | struct frame_info *frame; | |
4957 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
4958 | char *extra_args = NULL; |
4959 | char *level_arg; | |
4960 | char *addr_string; | |
c906108c SS |
4961 | int extra_args_len = 0, if_arg = 0; |
4962 | ||
4963 | if (!arg || | |
4964 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4965 | { | |
4966 | ||
4967 | if (default_breakpoint_valid) | |
4968 | { | |
6e7f8b9c | 4969 | if (deprecated_selected_frame) |
c906108c | 4970 | { |
6e7f8b9c | 4971 | selected_pc = deprecated_selected_frame->pc; |
c906108c SS |
4972 | if (arg) |
4973 | if_arg = 1; | |
4974 | } | |
4975 | else | |
4976 | error ("No selected frame."); | |
4977 | } | |
4978 | else | |
4979 | error ("No default breakpoint address now."); | |
4980 | } | |
4981 | else | |
4982 | { | |
4983 | extra_args = strchr (arg, ' '); | |
4984 | if (extra_args) | |
4985 | { | |
4986 | extra_args++; | |
4987 | extra_args_len = strlen (extra_args); | |
4988 | level_arg = (char *) xmalloc (extra_args - arg); | |
4989 | strncpy (level_arg, arg, extra_args - arg - 1); | |
4990 | level_arg[extra_args - arg - 1] = '\0'; | |
4991 | } | |
4992 | else | |
4993 | { | |
4994 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
4995 | strcpy (level_arg, arg); | |
4996 | } | |
4997 | ||
4998 | frame = parse_frame_specification (level_arg); | |
4999 | if (frame) | |
5000 | selected_pc = frame->pc; | |
5001 | else | |
5002 | selected_pc = 0; | |
5003 | } | |
5004 | if (if_arg) | |
5005 | { | |
5006 | extra_args = arg; | |
c5aa993b | 5007 | extra_args_len = strlen (arg); |
c906108c SS |
5008 | } |
5009 | ||
5010 | if (selected_pc) | |
5011 | { | |
c5aa993b | 5012 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c SS |
5013 | { |
5014 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
5015 | if (extra_args_len) | |
d4f3574e | 5016 | sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5017 | else |
d4f3574e | 5018 | sprintf (addr_string, "*0x%s", paddr_nz (high)); |
c906108c | 5019 | break_command_1 (addr_string, flag, from_tty); |
b8c9b27d | 5020 | xfree (addr_string); |
c906108c SS |
5021 | } |
5022 | else | |
5023 | error ("No function contains the specified address"); | |
5024 | } | |
5025 | else | |
5026 | error ("Unable to set breakpoint at procedure exit"); | |
5027 | } | |
5028 | ||
5029 | ||
5030 | static void | |
fba45db2 | 5031 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5032 | { |
5033 | char *addr_string, *break_string, *beg_addr_string; | |
5034 | CORE_ADDR low, high; | |
5035 | struct symtabs_and_lines sals; | |
5036 | struct symtab_and_line sal; | |
5037 | struct cleanup *old_chain; | |
7f7e9482 | 5038 | char *extra_args = NULL; |
c906108c SS |
5039 | int extra_args_len = 0; |
5040 | int i, if_arg = 0; | |
5041 | ||
5042 | if (!arg || | |
5043 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5044 | { | |
5045 | if (default_breakpoint_valid) | |
5046 | { | |
6e7f8b9c | 5047 | if (deprecated_selected_frame) |
c906108c SS |
5048 | { |
5049 | addr_string = (char *) xmalloc (15); | |
6e7f8b9c | 5050 | sprintf (addr_string, "*0x%s", paddr_nz (deprecated_selected_frame->pc)); |
c906108c SS |
5051 | if (arg) |
5052 | if_arg = 1; | |
5053 | } | |
5054 | else | |
5055 | error ("No selected frame."); | |
5056 | } | |
5057 | else | |
5058 | error ("No default breakpoint address now."); | |
5059 | } | |
5060 | else | |
5061 | { | |
5062 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5063 | strcpy (addr_string, arg); | |
5064 | } | |
5065 | ||
5066 | if (if_arg) | |
5067 | { | |
5068 | extra_args = arg; | |
c5aa993b JM |
5069 | extra_args_len = strlen (arg); |
5070 | } | |
5071 | else if (arg) | |
5072 | { | |
5073 | /* get the stuff after the function name or address */ | |
5074 | extra_args = strchr (arg, ' '); | |
5075 | if (extra_args) | |
5076 | { | |
5077 | extra_args++; | |
5078 | extra_args_len = strlen (extra_args); | |
5079 | } | |
c906108c | 5080 | } |
c906108c SS |
5081 | |
5082 | sals.sals = NULL; | |
5083 | sals.nelts = 0; | |
5084 | ||
c5aa993b JM |
5085 | beg_addr_string = addr_string; |
5086 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
5087 | (char ***) NULL); | |
c906108c | 5088 | |
b8c9b27d KB |
5089 | xfree (beg_addr_string); |
5090 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
5091 | for (i = 0; (i < sals.nelts); i++) |
5092 | { | |
5093 | sal = sals.sals[i]; | |
c5aa993b | 5094 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c SS |
5095 | { |
5096 | break_string = (char *) xmalloc (extra_args_len + 26); | |
5097 | if (extra_args_len) | |
d4f3574e | 5098 | sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5099 | else |
d4f3574e | 5100 | sprintf (break_string, "*0x%s", paddr_nz (high)); |
c906108c | 5101 | break_command_1 (break_string, flag, from_tty); |
b8c9b27d | 5102 | xfree (break_string); |
c906108c SS |
5103 | } |
5104 | else | |
5105 | error ("No function contains the specified address"); | |
5106 | } | |
5107 | if (sals.nelts > 1) | |
5108 | { | |
53a5351d JM |
5109 | warning ("Multiple breakpoints were set.\n"); |
5110 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5111 | } |
c5aa993b | 5112 | do_cleanups (old_chain); |
c906108c SS |
5113 | } |
5114 | ||
5115 | ||
5116 | /* Helper function for break_command_1 and disassemble_command. */ | |
5117 | ||
5118 | void | |
fba45db2 | 5119 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5120 | { |
5121 | CORE_ADDR pc; | |
5122 | ||
5123 | if (sal->pc == 0 && sal->symtab != NULL) | |
5124 | { | |
5125 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5126 | error ("No line %d in file \"%s\".", | |
5127 | sal->line, sal->symtab->filename); | |
5128 | sal->pc = pc; | |
5129 | } | |
5130 | ||
5131 | if (sal->section == 0 && sal->symtab != NULL) | |
5132 | { | |
5133 | struct blockvector *bv; | |
c5aa993b JM |
5134 | struct block *b; |
5135 | struct symbol *sym; | |
5136 | int index; | |
c906108c | 5137 | |
c5aa993b | 5138 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5139 | if (bv != NULL) |
5140 | { | |
c5aa993b | 5141 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5142 | sym = block_function (b); |
5143 | if (sym != NULL) | |
5144 | { | |
5145 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5146 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5147 | } | |
5148 | else | |
5149 | { | |
5150 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5151 | have to look harder. This case can be executed if we have |
5152 | line numbers but no functions (as can happen in assembly | |
5153 | source). */ | |
c906108c | 5154 | |
c5aa993b | 5155 | struct minimal_symbol *msym; |
c906108c SS |
5156 | |
5157 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5158 | if (msym) | |
5159 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5160 | } | |
5161 | } | |
5162 | } | |
5163 | } | |
5164 | ||
5165 | void | |
fba45db2 | 5166 | break_command (char *arg, int from_tty) |
c906108c SS |
5167 | { |
5168 | break_command_1 (arg, 0, from_tty); | |
5169 | } | |
5170 | ||
502fd408 | 5171 | void |
fba45db2 | 5172 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5173 | { |
5174 | break_at_finish_command_1 (arg, 0, from_tty); | |
5175 | } | |
5176 | ||
502fd408 | 5177 | void |
fba45db2 | 5178 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5179 | { |
5180 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5181 | } | |
5182 | ||
5183 | void | |
fba45db2 | 5184 | tbreak_command (char *arg, int from_tty) |
c906108c SS |
5185 | { |
5186 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5187 | } | |
5188 | ||
502fd408 | 5189 | void |
fba45db2 | 5190 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5191 | { |
5192 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5193 | } | |
5194 | ||
5195 | static void | |
fba45db2 | 5196 | hbreak_command (char *arg, int from_tty) |
c906108c SS |
5197 | { |
5198 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
5199 | } | |
5200 | ||
5201 | static void | |
fba45db2 | 5202 | thbreak_command (char *arg, int from_tty) |
c906108c SS |
5203 | { |
5204 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
5205 | } | |
5206 | ||
5207 | static void | |
fba45db2 | 5208 | stop_command (char *arg, int from_tty) |
c906108c SS |
5209 | { |
5210 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5211 | Usage: stop in <function | address>\n\ | |
5212 | stop at <line>\n"); | |
5213 | } | |
5214 | ||
5215 | static void | |
fba45db2 | 5216 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5217 | { |
5218 | int badInput = 0; | |
5219 | ||
c5aa993b | 5220 | if (arg == (char *) NULL) |
c906108c SS |
5221 | badInput = 1; |
5222 | else if (*arg != '*') | |
5223 | { | |
5224 | char *argptr = arg; | |
5225 | int hasColon = 0; | |
5226 | ||
53a5351d JM |
5227 | /* look for a ':'. If this is a line number specification, then |
5228 | say it is bad, otherwise, it should be an address or | |
5229 | function/method name */ | |
c906108c | 5230 | while (*argptr && !hasColon) |
c5aa993b JM |
5231 | { |
5232 | hasColon = (*argptr == ':'); | |
5233 | argptr++; | |
5234 | } | |
c906108c SS |
5235 | |
5236 | if (hasColon) | |
c5aa993b | 5237 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5238 | else |
c5aa993b | 5239 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5240 | } |
5241 | ||
5242 | if (badInput) | |
c5aa993b | 5243 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
5244 | else |
5245 | break_command_1 (arg, 0, from_tty); | |
5246 | } | |
5247 | ||
5248 | static void | |
fba45db2 | 5249 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5250 | { |
5251 | int badInput = 0; | |
5252 | ||
c5aa993b | 5253 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5254 | badInput = 1; |
5255 | else | |
5256 | { | |
5257 | char *argptr = arg; | |
5258 | int hasColon = 0; | |
5259 | ||
5260 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5261 | it is probably a line number. */ |
c906108c | 5262 | while (*argptr && !hasColon) |
c5aa993b JM |
5263 | { |
5264 | hasColon = (*argptr == ':'); | |
5265 | argptr++; | |
5266 | } | |
c906108c SS |
5267 | |
5268 | if (hasColon) | |
c5aa993b | 5269 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5270 | else |
c5aa993b | 5271 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5272 | } |
5273 | ||
5274 | if (badInput) | |
c5aa993b | 5275 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
5276 | else |
5277 | break_command_1 (arg, 0, from_tty); | |
5278 | } | |
5279 | ||
5280 | /* ARGSUSED */ | |
53a5351d JM |
5281 | /* accessflag: hw_write: watch write, |
5282 | hw_read: watch read, | |
5283 | hw_access: watch access (read or write) */ | |
c906108c | 5284 | static void |
fba45db2 | 5285 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5286 | { |
5287 | struct breakpoint *b; | |
5288 | struct symtab_and_line sal; | |
5289 | struct expression *exp; | |
5290 | struct block *exp_valid_block; | |
5291 | struct value *val, *mark; | |
5292 | struct frame_info *frame; | |
5293 | struct frame_info *prev_frame = NULL; | |
5294 | char *exp_start = NULL; | |
5295 | char *exp_end = NULL; | |
5296 | char *tok, *end_tok; | |
5297 | int toklen; | |
5298 | char *cond_start = NULL; | |
5299 | char *cond_end = NULL; | |
5300 | struct expression *cond = NULL; | |
5301 | int i, other_type_used, target_resources_ok = 0; | |
5302 | enum bptype bp_type; | |
5303 | int mem_cnt = 0; | |
5304 | ||
fe39c653 | 5305 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5306 | |
c906108c SS |
5307 | /* Parse arguments. */ |
5308 | innermost_block = NULL; | |
5309 | exp_start = arg; | |
5310 | exp = parse_exp_1 (&arg, 0, 0); | |
5311 | exp_end = arg; | |
5312 | exp_valid_block = innermost_block; | |
5313 | mark = value_mark (); | |
5314 | val = evaluate_expression (exp); | |
5315 | release_value (val); | |
5316 | if (VALUE_LAZY (val)) | |
5317 | value_fetch_lazy (val); | |
5318 | ||
5319 | tok = arg; | |
5320 | while (*tok == ' ' || *tok == '\t') | |
5321 | tok++; | |
5322 | end_tok = tok; | |
5323 | ||
5324 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5325 | end_tok++; | |
5326 | ||
5327 | toklen = end_tok - tok; | |
5328 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5329 | { | |
5330 | tok = cond_start = end_tok + 1; | |
5331 | cond = parse_exp_1 (&tok, 0, 0); | |
5332 | cond_end = tok; | |
5333 | } | |
5334 | if (*tok) | |
c5aa993b | 5335 | error ("Junk at end of command."); |
c906108c | 5336 | |
53a5351d | 5337 | if (accessflag == hw_read) |
c5aa993b | 5338 | bp_type = bp_read_watchpoint; |
53a5351d | 5339 | else if (accessflag == hw_access) |
c5aa993b JM |
5340 | bp_type = bp_access_watchpoint; |
5341 | else | |
5342 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5343 | |
5344 | mem_cnt = can_use_hardware_watchpoint (val); | |
5345 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5346 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5347 | if (mem_cnt != 0) |
5348 | { | |
5349 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5350 | target_resources_ok = |
5351 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5352 | other_type_used); | |
c5aa993b | 5353 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5354 | error ("Target does not support this type of hardware watchpoint."); |
5355 | ||
c5aa993b | 5356 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5357 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5358 | } |
c906108c SS |
5359 | |
5360 | #if defined(HPUXHPPA) | |
c5aa993b | 5361 | /* On HP-UX if you set a h/w |
c906108c SS |
5362 | watchpoint before the "run" command, the inferior dies with a e.g., |
5363 | SIGILL once you start it. I initially believed this was due to a | |
5364 | bad interaction between page protection traps and the initial | |
5365 | startup sequence by the dynamic linker. | |
5366 | ||
5367 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5368 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5369 | yet, which forced slow watches before a "run" or "attach", and it |
5370 | still fails somewhere in the startup code. | |
5371 | ||
5372 | Until I figure out what's happening, I'm disallowing watches altogether | |
5373 | before the "run" or "attach" command. We'll tell the user they must | |
5374 | set watches after getting the program started. */ | |
c5aa993b | 5375 | if (!target_has_execution) |
c906108c SS |
5376 | { |
5377 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5378 | return; | |
5379 | } | |
5380 | #endif /* HPUXHPPA */ | |
c5aa993b | 5381 | |
4d28f7a8 KB |
5382 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5383 | watchpoint could not be set. */ | |
5384 | if (!mem_cnt || target_resources_ok <= 0) | |
5385 | bp_type = bp_watchpoint; | |
5386 | ||
c906108c | 5387 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5388 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5389 | set_breakpoint_count (breakpoint_count + 1); |
5390 | b->number = breakpoint_count; | |
b5de0fa7 | 5391 | b->disposition = disp_donttouch; |
c906108c SS |
5392 | b->exp = exp; |
5393 | b->exp_valid_block = exp_valid_block; | |
5394 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5395 | b->val = val; | |
5396 | b->cond = cond; | |
5397 | if (cond_start) | |
5398 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5399 | else | |
5400 | b->cond_string = 0; | |
c5aa993b | 5401 | |
c906108c SS |
5402 | frame = block_innermost_frame (exp_valid_block); |
5403 | if (frame) | |
5404 | { | |
5405 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5406 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5407 | } |
5408 | else | |
101dcfbe AC |
5409 | { |
5410 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5411 | } | |
c906108c | 5412 | |
c906108c SS |
5413 | /* If the expression is "local", then set up a "watchpoint scope" |
5414 | breakpoint at the point where we've left the scope of the watchpoint | |
5415 | expression. */ | |
5416 | if (innermost_block) | |
5417 | { | |
5418 | if (prev_frame) | |
5419 | { | |
5420 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5421 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5422 | bp_watchpoint_scope); | |
c906108c | 5423 | |
b5de0fa7 | 5424 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5425 | |
5426 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5427 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5428 | |
5429 | /* Only break in the proper frame (help with recursion). */ | |
5430 | scope_breakpoint->frame = prev_frame->frame; | |
5431 | ||
5432 | /* Set the address at which we will stop. */ | |
5433 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
5434 | ||
5435 | /* The scope breakpoint is related to the watchpoint. We | |
5436 | will need to act on them together. */ | |
5437 | b->related_breakpoint = scope_breakpoint; | |
5438 | } | |
5439 | } | |
5440 | value_free_to_mark (mark); | |
5441 | mention (b); | |
5442 | } | |
5443 | ||
5444 | /* Return count of locations need to be watched and can be handled | |
5445 | in hardware. If the watchpoint can not be handled | |
5446 | in hardware return zero. */ | |
5447 | ||
5448 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d JM |
5449 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
5450 | ((BYTE_SIZE) <= (REGISTER_SIZE)) | |
5451 | #endif | |
5452 | ||
5453 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5454 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5455 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5456 | #endif |
5457 | ||
5458 | static int | |
fba45db2 | 5459 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5460 | { |
5461 | int found_memory_cnt = 0; | |
2e70b7b9 | 5462 | struct value *head = v; |
c906108c SS |
5463 | |
5464 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5465 | if (!can_use_hw_watchpoints) |
c906108c | 5466 | return 0; |
c5aa993b | 5467 | |
5c44784c JM |
5468 | /* Make sure that the value of the expression depends only upon |
5469 | memory contents, and values computed from them within GDB. If we | |
5470 | find any register references or function calls, we can't use a | |
5471 | hardware watchpoint. | |
5472 | ||
5473 | The idea here is that evaluating an expression generates a series | |
5474 | of values, one holding the value of every subexpression. (The | |
5475 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5476 | a*b+c.) GDB's values hold almost enough information to establish | |
5477 | the criteria given above --- they identify memory lvalues, | |
5478 | register lvalues, computed values, etcetera. So we can evaluate | |
5479 | the expression, and then scan the chain of values that leaves | |
5480 | behind to decide whether we can detect any possible change to the | |
5481 | expression's final value using only hardware watchpoints. | |
5482 | ||
5483 | However, I don't think that the values returned by inferior | |
5484 | function calls are special in any way. So this function may not | |
5485 | notice that an expression involving an inferior function call | |
5486 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5487 | for (; v; v = v->next) |
c906108c | 5488 | { |
5c44784c | 5489 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5490 | { |
5c44784c JM |
5491 | if (VALUE_LAZY (v)) |
5492 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5493 | we either just used its address (e.g., `a' in `a.b') or | |
5494 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5495 | ; | |
53a5351d | 5496 | else |
5c44784c JM |
5497 | { |
5498 | /* Ahh, memory we actually used! Check if we can cover | |
5499 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5500 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5501 | ||
5502 | /* We only watch structs and arrays if user asked for it | |
5503 | explicitly, never if they just happen to appear in a | |
5504 | middle of some value chain. */ | |
5505 | if (v == head | |
5506 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5507 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5508 | { | |
5509 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5510 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5511 | ||
5512 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5513 | return 0; | |
5514 | else | |
5515 | found_memory_cnt++; | |
5516 | } | |
5c44784c | 5517 | } |
c5aa993b | 5518 | } |
c906108c | 5519 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5520 | return 0; /* ??? What does this represent? */ |
5521 | else if (v->lval == lval_register) | |
5522 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5523 | } |
5524 | ||
5525 | /* The expression itself looks suitable for using a hardware | |
5526 | watchpoint, but give the target machine a chance to reject it. */ | |
5527 | return found_memory_cnt; | |
5528 | } | |
5529 | ||
8b93c638 | 5530 | void |
fba45db2 | 5531 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5532 | { |
5533 | watch_command (arg, from_tty); | |
5534 | } | |
8926118c | 5535 | |
c5aa993b | 5536 | static void |
fba45db2 | 5537 | watch_command (char *arg, int from_tty) |
c906108c | 5538 | { |
53a5351d | 5539 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5540 | } |
5541 | ||
8b93c638 | 5542 | void |
fba45db2 | 5543 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5544 | { |
5545 | rwatch_command (arg, from_tty); | |
5546 | } | |
8926118c | 5547 | |
c5aa993b | 5548 | static void |
fba45db2 | 5549 | rwatch_command (char *arg, int from_tty) |
c906108c | 5550 | { |
53a5351d | 5551 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5552 | } |
5553 | ||
8b93c638 | 5554 | void |
fba45db2 | 5555 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5556 | { |
5557 | awatch_command (arg, from_tty); | |
5558 | } | |
8926118c | 5559 | |
c5aa993b | 5560 | static void |
fba45db2 | 5561 | awatch_command (char *arg, int from_tty) |
c906108c | 5562 | { |
53a5351d | 5563 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5564 | } |
c906108c | 5565 | \f |
c5aa993b | 5566 | |
43ff13b4 | 5567 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5568 | because it uses the mechanisms of breakpoints. */ |
5569 | ||
43ff13b4 JM |
5570 | /* This function is called by fetch_inferior_event via the |
5571 | cmd_continuation pointer, to complete the until command. It takes | |
5572 | care of cleaning up the temporary breakpoints set up by the until | |
5573 | command. */ | |
c2c6d25f JM |
5574 | static void |
5575 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5576 | { |
0d06e24b JM |
5577 | struct cleanup *cleanups; |
5578 | ||
57e687d9 | 5579 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5580 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5581 | } |
5582 | ||
c906108c SS |
5583 | /* ARGSUSED */ |
5584 | void | |
fba45db2 | 5585 | until_break_command (char *arg, int from_tty) |
c906108c SS |
5586 | { |
5587 | struct symtabs_and_lines sals; | |
5588 | struct symtab_and_line sal; | |
6e7f8b9c | 5589 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
5590 | struct breakpoint *breakpoint; |
5591 | struct cleanup *old_chain; | |
0d06e24b JM |
5592 | struct continuation_arg *arg1; |
5593 | ||
c906108c SS |
5594 | |
5595 | clear_proceed_status (); | |
5596 | ||
5597 | /* Set a breakpoint where the user wants it and at return from | |
5598 | this function */ | |
c5aa993b | 5599 | |
c906108c SS |
5600 | if (default_breakpoint_valid) |
5601 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 5602 | default_breakpoint_line, (char ***) NULL); |
c906108c | 5603 | else |
53a5351d JM |
5604 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
5605 | 0, (char ***) NULL); | |
c5aa993b | 5606 | |
c906108c SS |
5607 | if (sals.nelts != 1) |
5608 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5609 | |
c906108c | 5610 | sal = sals.sals[0]; |
b8c9b27d | 5611 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 5612 | |
c906108c SS |
5613 | if (*arg) |
5614 | error ("Junk at end of arguments."); | |
c5aa993b | 5615 | |
c906108c | 5616 | resolve_sal_pc (&sal); |
c5aa993b | 5617 | |
6e7f8b9c | 5618 | breakpoint = set_momentary_breakpoint (sal, deprecated_selected_frame, bp_until); |
c5aa993b | 5619 | |
6426a772 | 5620 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5621 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5622 | else |
4d6140d9 | 5623 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5624 | |
5625 | /* If we are running asynchronously, and the target supports async | |
5626 | execution, we are not waiting for the target to stop, in the call | |
5627 | tp proceed, below. This means that we cannot delete the | |
5628 | brekpoints until the target has actually stopped. The only place | |
5629 | where we get a chance to do that is in fetch_inferior_event, so | |
5630 | we must set things up for that. */ | |
5631 | ||
6426a772 | 5632 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 5633 | { |
0d06e24b JM |
5634 | /* In this case the arg for the continuation is just the point |
5635 | in the exec_cleanups chain from where to start doing | |
5636 | cleanups, because all the continuation does is the cleanups in | |
5637 | the exec_cleanup_chain. */ | |
5638 | arg1 = | |
5639 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5640 | arg1->next = NULL; |
5641 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5642 | |
5643 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5644 | } |
c906108c SS |
5645 | |
5646 | /* Keep within the current frame */ | |
c5aa993b | 5647 | |
c906108c SS |
5648 | if (prev_frame) |
5649 | { | |
5650 | sal = find_pc_line (prev_frame->pc, 0); | |
5651 | sal.pc = prev_frame->pc; | |
5652 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); | |
6426a772 | 5653 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5654 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5655 | else |
4d6140d9 | 5656 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5657 | } |
c5aa993b | 5658 | |
c906108c | 5659 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5660 | /* Do the cleanups now, anly if we are not running asynchronously, |
5661 | of if we are, but the target is still synchronous. */ | |
6426a772 | 5662 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 5663 | do_cleanups (old_chain); |
c906108c SS |
5664 | } |
5665 | \f | |
5666 | #if 0 | |
5667 | /* These aren't used; I don't konw what they were for. */ | |
5668 | /* Set a breakpoint at the catch clause for NAME. */ | |
5669 | static int | |
fba45db2 | 5670 | catch_breakpoint (char *name) |
c906108c SS |
5671 | { |
5672 | } | |
5673 | ||
5674 | static int | |
fba45db2 | 5675 | disable_catch_breakpoint (void) |
c906108c SS |
5676 | { |
5677 | } | |
5678 | ||
5679 | static int | |
fba45db2 | 5680 | delete_catch_breakpoint (void) |
c906108c SS |
5681 | { |
5682 | } | |
5683 | ||
5684 | static int | |
fba45db2 | 5685 | enable_catch_breakpoint (void) |
c906108c SS |
5686 | { |
5687 | } | |
5688 | #endif /* 0 */ | |
5689 | ||
5690 | struct sal_chain | |
5691 | { | |
5692 | struct sal_chain *next; | |
5693 | struct symtab_and_line sal; | |
5694 | }; | |
5695 | ||
7a292a7a | 5696 | #if 0 |
c906108c SS |
5697 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
5698 | had been commented out in the v.4.16 sources, and stays | |
5699 | disabled there now because "catch NAME" syntax isn't allowed. | |
5700 | pai/1997-07-11 */ | |
5701 | /* This isn't used; I don't know what it was for. */ | |
5702 | /* For each catch clause identified in ARGS, run FUNCTION | |
5703 | with that clause as an argument. */ | |
5704 | static struct symtabs_and_lines | |
831662b3 | 5705 | map_catch_names (char *args, int (*function) ()) |
c906108c SS |
5706 | { |
5707 | register char *p = args; | |
5708 | register char *p1; | |
5709 | struct symtabs_and_lines sals; | |
5710 | #if 0 | |
5711 | struct sal_chain *sal_chain = 0; | |
5712 | #endif | |
5713 | ||
5714 | if (p == 0) | |
5715 | error_no_arg ("one or more catch names"); | |
5716 | ||
5717 | sals.nelts = 0; | |
5718 | sals.sals = NULL; | |
5719 | ||
5720 | while (*p) | |
5721 | { | |
5722 | p1 = p; | |
5723 | /* Don't swallow conditional part. */ | |
5724 | if (p1[0] == 'i' && p1[1] == 'f' | |
5725 | && (p1[2] == ' ' || p1[2] == '\t')) | |
5726 | break; | |
5727 | ||
5728 | if (isalpha (*p1)) | |
5729 | { | |
5730 | p1++; | |
5731 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
5732 | p1++; | |
5733 | } | |
5734 | ||
5735 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
5736 | error ("Arguments must be catch names."); | |
5737 | ||
5738 | *p1 = 0; | |
5739 | #if 0 | |
5740 | if (function (p)) | |
5741 | { | |
5742 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5743 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
5744 | next->next = sal_chain; |
5745 | next->sal = get_catch_sal (p); | |
5746 | sal_chain = next; | |
5747 | goto win; | |
5748 | } | |
5749 | #endif | |
5750 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
5751 | #if 0 | |
5752 | win: | |
5753 | #endif | |
5754 | p = p1; | |
c5aa993b JM |
5755 | while (*p == ' ' || *p == '\t') |
5756 | p++; | |
c906108c SS |
5757 | } |
5758 | } | |
7a292a7a | 5759 | #endif |
c906108c SS |
5760 | |
5761 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
5762 | ||
5763 | static struct symtabs_and_lines | |
fba45db2 | 5764 | get_catch_sals (int this_level_only) |
c906108c SS |
5765 | { |
5766 | register struct blockvector *bl; | |
5767 | register struct block *block; | |
5768 | int index, have_default = 0; | |
5769 | CORE_ADDR pc; | |
5770 | struct symtabs_and_lines sals; | |
5771 | struct sal_chain *sal_chain = 0; | |
5772 | char *blocks_searched; | |
5773 | ||
5774 | /* Not sure whether an error message is always the correct response, | |
5775 | but it's better than a core dump. */ | |
6e7f8b9c | 5776 | if (deprecated_selected_frame == NULL) |
c906108c | 5777 | error ("No selected frame."); |
6e7f8b9c AC |
5778 | block = get_frame_block (deprecated_selected_frame, 0); |
5779 | pc = deprecated_selected_frame->pc; | |
c906108c SS |
5780 | |
5781 | sals.nelts = 0; | |
5782 | sals.sals = NULL; | |
5783 | ||
5784 | if (block == 0) | |
5785 | error ("No symbol table info available.\n"); | |
5786 | ||
5787 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
5788 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5789 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5790 | ||
5791 | while (block != 0) | |
5792 | { | |
5793 | CORE_ADDR end = BLOCK_END (block) - 4; | |
5794 | int last_index; | |
5795 | ||
5796 | if (bl != blockvector_for_pc (end, &index)) | |
5797 | error ("blockvector blotch"); | |
5798 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
5799 | error ("blockvector botch"); | |
5800 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
5801 | index += 1; | |
5802 | ||
5803 | /* Don't print out blocks that have gone by. */ | |
5804 | while (index < last_index | |
5805 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
5806 | index++; | |
5807 | ||
5808 | while (index < last_index | |
5809 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
5810 | { | |
5811 | if (blocks_searched[index] == 0) | |
5812 | { | |
5813 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
c906108c SS |
5814 | register int i; |
5815 | register struct symbol *sym; | |
5816 | ||
e88c90f2 | 5817 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 5818 | { |
c906108c SS |
5819 | if (STREQ (SYMBOL_NAME (sym), "default")) |
5820 | { | |
5821 | if (have_default) | |
5822 | continue; | |
5823 | have_default = 1; | |
5824 | } | |
5825 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
5826 | { | |
5827 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5828 | alloca (sizeof (struct sal_chain)); |
c906108c | 5829 | next->next = sal_chain; |
53a5351d JM |
5830 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
5831 | 0); | |
c906108c SS |
5832 | sal_chain = next; |
5833 | } | |
5834 | } | |
5835 | blocks_searched[index] = 1; | |
5836 | } | |
5837 | index++; | |
5838 | } | |
5839 | if (have_default) | |
5840 | break; | |
5841 | if (sal_chain && this_level_only) | |
5842 | break; | |
5843 | ||
5844 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
5845 | Don't continue to its superblock, the block of |
5846 | per-file symbols. */ | |
c906108c SS |
5847 | if (BLOCK_FUNCTION (block)) |
5848 | break; | |
5849 | block = BLOCK_SUPERBLOCK (block); | |
5850 | } | |
5851 | ||
5852 | if (sal_chain) | |
5853 | { | |
5854 | struct sal_chain *tmp_chain; | |
5855 | ||
5856 | /* Count the number of entries. */ | |
5857 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
5858 | tmp_chain = tmp_chain->next) | |
5859 | index++; | |
5860 | ||
5861 | sals.nelts = index; | |
5862 | sals.sals = (struct symtab_and_line *) | |
5863 | xmalloc (index * sizeof (struct symtab_and_line)); | |
5864 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
5865 | sals.sals[index] = sal_chain->sal; | |
5866 | } | |
5867 | ||
5868 | return sals; | |
5869 | } | |
5870 | ||
5871 | static void | |
fba45db2 | 5872 | ep_skip_leading_whitespace (char **s) |
c906108c | 5873 | { |
c5aa993b JM |
5874 | if ((s == NULL) || (*s == NULL)) |
5875 | return; | |
5876 | while (isspace (**s)) | |
5877 | *s += 1; | |
c906108c | 5878 | } |
c5aa993b | 5879 | |
c906108c SS |
5880 | /* This function examines a string, and attempts to find a token |
5881 | that might be an event name in the leading characters. If a | |
5882 | possible match is found, a pointer to the last character of | |
5883 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5884 | |
c906108c | 5885 | static char * |
fba45db2 | 5886 | ep_find_event_name_end (char *arg) |
c906108c | 5887 | { |
c5aa993b JM |
5888 | char *s = arg; |
5889 | char *event_name_end = NULL; | |
5890 | ||
c906108c SS |
5891 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5892 | if (arg == NULL) | |
5893 | return NULL; | |
c5aa993b | 5894 | |
c906108c | 5895 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5896 | Basically, we're looking for alphanumerics and underscores; |
5897 | anything else delimites the token. */ | |
c906108c SS |
5898 | while (*s != '\0') |
5899 | { | |
c5aa993b JM |
5900 | if (!isalnum (*s) && (*s != '_')) |
5901 | break; | |
c906108c SS |
5902 | event_name_end = s; |
5903 | s++; | |
5904 | } | |
c5aa993b | 5905 | |
c906108c SS |
5906 | return event_name_end; |
5907 | } | |
5908 | ||
c5aa993b | 5909 | |
c906108c SS |
5910 | /* This function attempts to parse an optional "if <cond>" clause |
5911 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5912 | |
c906108c SS |
5913 | Else, it returns a pointer to the condition string. (It does not |
5914 | attempt to evaluate the string against a particular block.) And, | |
5915 | it updates arg to point to the first character following the parsed | |
5916 | if clause in the arg string. */ | |
53a5351d | 5917 | |
c906108c | 5918 | static char * |
fba45db2 | 5919 | ep_parse_optional_if_clause (char **arg) |
c906108c | 5920 | { |
c5aa993b JM |
5921 | char *cond_string; |
5922 | ||
5923 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5924 | return NULL; |
c5aa993b | 5925 | |
c906108c SS |
5926 | /* Skip the "if" keyword. */ |
5927 | (*arg) += 2; | |
c5aa993b | 5928 | |
c906108c SS |
5929 | /* Skip any extra leading whitespace, and record the start of the |
5930 | condition string. */ | |
5931 | ep_skip_leading_whitespace (arg); | |
5932 | cond_string = *arg; | |
c5aa993b | 5933 | |
c906108c SS |
5934 | /* Assume that the condition occupies the remainder of the arg string. */ |
5935 | (*arg) += strlen (cond_string); | |
c5aa993b | 5936 | |
c906108c SS |
5937 | return cond_string; |
5938 | } | |
c5aa993b | 5939 | |
c906108c SS |
5940 | /* This function attempts to parse an optional filename from the arg |
5941 | string. If one is not found, it returns NULL. | |
c5aa993b | 5942 | |
c906108c SS |
5943 | Else, it returns a pointer to the parsed filename. (This function |
5944 | makes no attempt to verify that a file of that name exists, or is | |
5945 | accessible.) And, it updates arg to point to the first character | |
5946 | following the parsed filename in the arg string. | |
c5aa993b | 5947 | |
c906108c SS |
5948 | Note that clients needing to preserve the returned filename for |
5949 | future access should copy it to their own buffers. */ | |
5950 | static char * | |
fba45db2 | 5951 | ep_parse_optional_filename (char **arg) |
c906108c | 5952 | { |
c5aa993b JM |
5953 | static char filename[1024]; |
5954 | char *arg_p = *arg; | |
5955 | int i; | |
5956 | char c; | |
5957 | ||
c906108c SS |
5958 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5959 | return NULL; | |
c5aa993b JM |
5960 | |
5961 | for (i = 0;; i++) | |
c906108c SS |
5962 | { |
5963 | c = *arg_p; | |
5964 | if (isspace (c)) | |
c5aa993b | 5965 | c = '\0'; |
c906108c SS |
5966 | filename[i] = c; |
5967 | if (c == '\0') | |
c5aa993b | 5968 | break; |
c906108c SS |
5969 | arg_p++; |
5970 | } | |
5971 | *arg = arg_p; | |
c5aa993b | 5972 | |
c906108c SS |
5973 | return filename; |
5974 | } | |
c5aa993b | 5975 | |
c906108c SS |
5976 | /* Commands to deal with catching events, such as signals, exceptions, |
5977 | process start/exit, etc. */ | |
c5aa993b JM |
5978 | |
5979 | typedef enum | |
5980 | { | |
5981 | catch_fork, catch_vfork | |
5982 | } | |
5983 | catch_fork_kind; | |
5984 | ||
e514a9d6 | 5985 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
a14ed312 KB |
5986 | static void catch_fork_command_1 (catch_fork_kind fork_kind, |
5987 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 5988 | |
c906108c | 5989 | static void |
fba45db2 KB |
5990 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
5991 | int from_tty) | |
c906108c | 5992 | { |
c5aa993b JM |
5993 | char *cond_string = NULL; |
5994 | ||
c906108c | 5995 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5996 | |
c906108c | 5997 | /* The allowed syntax is: |
c5aa993b JM |
5998 | catch [v]fork |
5999 | catch [v]fork if <cond> | |
6000 | ||
c906108c SS |
6001 | First, check if there's an if clause. */ |
6002 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6003 | |
c906108c SS |
6004 | if ((*arg != '\0') && !isspace (*arg)) |
6005 | error ("Junk at end of arguments."); | |
c5aa993b | 6006 | |
c906108c SS |
6007 | /* If this target supports it, create a fork or vfork catchpoint |
6008 | and enable reporting of such events. */ | |
c5aa993b JM |
6009 | switch (fork_kind) |
6010 | { | |
6011 | case catch_fork: | |
c906108c SS |
6012 | create_fork_event_catchpoint (tempflag, cond_string); |
6013 | break; | |
c5aa993b | 6014 | case catch_vfork: |
c906108c SS |
6015 | create_vfork_event_catchpoint (tempflag, cond_string); |
6016 | break; | |
c5aa993b | 6017 | default: |
c906108c SS |
6018 | error ("unsupported or unknown fork kind; cannot catch it"); |
6019 | break; | |
c5aa993b | 6020 | } |
c906108c | 6021 | } |
e514a9d6 | 6022 | #endif |
c906108c | 6023 | |
e514a9d6 | 6024 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c | 6025 | static void |
fba45db2 | 6026 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6027 | { |
c5aa993b | 6028 | char *cond_string = NULL; |
c906108c SS |
6029 | |
6030 | ep_skip_leading_whitespace (&arg); | |
6031 | ||
6032 | /* The allowed syntax is: | |
c5aa993b JM |
6033 | catch exec |
6034 | catch exec if <cond> | |
c906108c SS |
6035 | |
6036 | First, check if there's an if clause. */ | |
6037 | cond_string = ep_parse_optional_if_clause (&arg); | |
6038 | ||
6039 | if ((*arg != '\0') && !isspace (*arg)) | |
6040 | error ("Junk at end of arguments."); | |
6041 | ||
6042 | /* If this target supports it, create an exec catchpoint | |
6043 | and enable reporting of such events. */ | |
6044 | create_exec_event_catchpoint (tempflag, cond_string); | |
6045 | } | |
e514a9d6 | 6046 | #endif |
c5aa993b | 6047 | |
c906108c SS |
6048 | #if defined(SOLIB_ADD) |
6049 | static void | |
fba45db2 | 6050 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6051 | { |
c5aa993b JM |
6052 | char *dll_pathname = NULL; |
6053 | char *cond_string = NULL; | |
6054 | ||
c906108c | 6055 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6056 | |
c906108c | 6057 | /* The allowed syntax is: |
c5aa993b JM |
6058 | catch load |
6059 | catch load if <cond> | |
6060 | catch load <filename> | |
6061 | catch load <filename> if <cond> | |
6062 | ||
c906108c SS |
6063 | The user is not allowed to specify the <filename> after an |
6064 | if clause. | |
c5aa993b | 6065 | |
c906108c | 6066 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6067 | |
c906108c SS |
6068 | First, check if there's an if clause. If so, then there |
6069 | cannot be a filename. */ | |
6070 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6071 | |
c906108c SS |
6072 | /* If there was an if clause, then there cannot be a filename. |
6073 | Else, there might be a filename and an if clause. */ | |
6074 | if (cond_string == NULL) | |
6075 | { | |
6076 | dll_pathname = ep_parse_optional_filename (&arg); | |
6077 | ep_skip_leading_whitespace (&arg); | |
6078 | cond_string = ep_parse_optional_if_clause (&arg); | |
6079 | } | |
c5aa993b | 6080 | |
c906108c SS |
6081 | if ((*arg != '\0') && !isspace (*arg)) |
6082 | error ("Junk at end of arguments."); | |
c5aa993b | 6083 | |
c906108c SS |
6084 | /* Create a load breakpoint that only triggers when a load of |
6085 | the specified dll (or any dll, if no pathname was specified) | |
6086 | occurs. */ | |
39f77062 | 6087 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6088 | dll_pathname, cond_string); |
c906108c | 6089 | } |
c5aa993b | 6090 | |
c906108c | 6091 | static void |
fba45db2 | 6092 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6093 | { |
c5aa993b JM |
6094 | char *dll_pathname = NULL; |
6095 | char *cond_string = NULL; | |
6096 | ||
c906108c | 6097 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6098 | |
c906108c | 6099 | /* The allowed syntax is: |
c5aa993b JM |
6100 | catch unload |
6101 | catch unload if <cond> | |
6102 | catch unload <filename> | |
6103 | catch unload <filename> if <cond> | |
6104 | ||
c906108c SS |
6105 | The user is not allowed to specify the <filename> after an |
6106 | if clause. | |
c5aa993b | 6107 | |
c906108c | 6108 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6109 | |
c906108c SS |
6110 | First, check if there's an if clause. If so, then there |
6111 | cannot be a filename. */ | |
6112 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6113 | |
c906108c SS |
6114 | /* If there was an if clause, then there cannot be a filename. |
6115 | Else, there might be a filename and an if clause. */ | |
6116 | if (cond_string == NULL) | |
6117 | { | |
6118 | dll_pathname = ep_parse_optional_filename (&arg); | |
6119 | ep_skip_leading_whitespace (&arg); | |
6120 | cond_string = ep_parse_optional_if_clause (&arg); | |
6121 | } | |
c5aa993b | 6122 | |
c906108c SS |
6123 | if ((*arg != '\0') && !isspace (*arg)) |
6124 | error ("Junk at end of arguments."); | |
c5aa993b | 6125 | |
c906108c SS |
6126 | /* Create an unload breakpoint that only triggers when an unload of |
6127 | the specified dll (or any dll, if no pathname was specified) | |
6128 | occurs. */ | |
39f77062 | 6129 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6130 | dll_pathname, cond_string); |
c906108c SS |
6131 | } |
6132 | #endif /* SOLIB_ADD */ | |
6133 | ||
6134 | /* Commands to deal with catching exceptions. */ | |
6135 | ||
6136 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6137 | exception event callback */ |
c906108c SS |
6138 | |
6139 | static void | |
fba45db2 KB |
6140 | create_exception_catchpoint (int tempflag, char *cond_string, |
6141 | enum exception_event_kind ex_event, | |
6142 | struct symtab_and_line *sal) | |
c906108c | 6143 | { |
c5aa993b | 6144 | struct breakpoint *b; |
c5aa993b | 6145 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6146 | enum bptype bptype; |
c906108c | 6147 | |
c5aa993b | 6148 | if (!sal) /* no exception support? */ |
c906108c SS |
6149 | return; |
6150 | ||
c906108c SS |
6151 | switch (ex_event) |
6152 | { | |
c5aa993b | 6153 | case EX_EVENT_THROW: |
4d28f7a8 | 6154 | bptype = bp_catch_throw; |
c5aa993b JM |
6155 | break; |
6156 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6157 | bptype = bp_catch_catch; |
c5aa993b JM |
6158 | break; |
6159 | default: /* error condition */ | |
c5aa993b | 6160 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6161 | } |
4d28f7a8 KB |
6162 | |
6163 | b = set_raw_breakpoint (*sal, bptype); | |
6164 | set_breakpoint_count (breakpoint_count + 1); | |
6165 | b->number = breakpoint_count; | |
6166 | b->cond = NULL; | |
6167 | b->cond_string = (cond_string == NULL) ? | |
6168 | NULL : savestring (cond_string, strlen (cond_string)); | |
6169 | b->thread = thread; | |
6170 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6171 | b->enable_state = bp_enabled; |
6172 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6173 | mention (b); |
6174 | } | |
6175 | ||
c5aa993b | 6176 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6177 | |
6178 | static void | |
fba45db2 KB |
6179 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6180 | int tempflag, int from_tty) | |
c906108c | 6181 | { |
c5aa993b JM |
6182 | char *cond_string = NULL; |
6183 | struct symtab_and_line *sal = NULL; | |
6184 | ||
c906108c | 6185 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6186 | |
c906108c SS |
6187 | cond_string = ep_parse_optional_if_clause (&arg); |
6188 | ||
6189 | if ((*arg != '\0') && !isspace (*arg)) | |
6190 | error ("Junk at end of arguments."); | |
6191 | ||
6192 | if ((ex_event != EX_EVENT_THROW) && | |
6193 | (ex_event != EX_EVENT_CATCH)) | |
6194 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6195 | ||
6196 | /* See if we can find a callback routine */ | |
6197 | sal = target_enable_exception_callback (ex_event, 1); | |
6198 | ||
c5aa993b | 6199 | if (sal) |
c906108c SS |
6200 | { |
6201 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6202 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6203 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6204 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6205 | else |
53a5351d | 6206 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6207 | } |
c5aa993b | 6208 | else |
c906108c SS |
6209 | { |
6210 | /* No callbacks from runtime system for exceptions. | |
6211 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
6212 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
6213 | { |
6214 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
6215 | } | |
c906108c | 6216 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
6217 | { |
6218 | /* Set a breakpoint on __raise_exception () */ | |
6219 | ||
53a5351d JM |
6220 | warning ("Unsupported with this platform/compiler combination."); |
6221 | warning ("Perhaps you can achieve the effect you want by setting"); | |
6222 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 6223 | } |
c906108c SS |
6224 | } |
6225 | } | |
6226 | ||
6227 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6228 | inside a catch_errors */ | |
6229 | ||
6230 | static int | |
fba45db2 | 6231 | cover_target_enable_exception_callback (PTR arg) |
c906108c SS |
6232 | { |
6233 | args_for_catchpoint_enable *args = arg; | |
6234 | struct symtab_and_line *sal; | |
b5de0fa7 | 6235 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6236 | if (sal == NULL) |
6237 | return 0; | |
6238 | else if (sal == (struct symtab_and_line *) -1) | |
6239 | return -1; | |
6240 | else | |
c5aa993b | 6241 | return 1; /*is valid */ |
c906108c SS |
6242 | } |
6243 | ||
6244 | ||
6245 | ||
6246 | /* This is the original v.4.16 and earlier version of the | |
6247 | catch_command_1() function. Now that other flavours of "catch" | |
6248 | have been introduced, and since exception handling can be handled | |
6249 | in other ways (through target ops) also, this is used only for the | |
6250 | GNU C++ exception handling system. | |
6251 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
6252 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
6253 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 6254 | |
c906108c SS |
6255 | Called from catch_exception_command_1 () */ |
6256 | ||
6257 | ||
6258 | static void | |
fba45db2 | 6259 | handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty) |
c906108c SS |
6260 | { |
6261 | /* First, translate ARG into something we can deal with in terms | |
6262 | of breakpoints. */ | |
6263 | ||
6264 | struct symtabs_and_lines sals; | |
6265 | struct symtab_and_line sal; | |
6266 | register struct expression *cond = 0; | |
6267 | register struct breakpoint *b; | |
6268 | char *save_arg; | |
6269 | int i; | |
6270 | ||
fe39c653 | 6271 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6272 | |
6273 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
6274 | are breakpointed. */ | |
6275 | ||
c5aa993b | 6276 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
6277 | && (arg[2] == ' ' || arg[2] == '\t'))) |
6278 | { | |
6279 | /* Grab all active catch clauses. */ | |
6280 | sals = get_catch_sals (0); | |
6281 | } | |
6282 | else | |
6283 | { | |
6284 | /* Grab selected catch clauses. */ | |
6285 | error ("catch NAME not implemented"); | |
6286 | ||
6287 | #if 0 | |
6288 | /* Not sure why this code has been disabled. I'm leaving | |
6289 | it disabled. We can never come here now anyway | |
6290 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 6291 | pai/1997-07-11 */ |
c906108c SS |
6292 | |
6293 | /* This isn't used; I don't know what it was for. */ | |
6294 | sals = map_catch_names (arg, catch_breakpoint); | |
6295 | #endif | |
6296 | } | |
6297 | ||
c5aa993b | 6298 | if (!sals.nelts) |
c906108c SS |
6299 | return; |
6300 | ||
6301 | save_arg = arg; | |
6302 | for (i = 0; i < sals.nelts; i++) | |
6303 | { | |
6304 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 6305 | |
c906108c SS |
6306 | while (arg && *arg) |
6307 | { | |
6308 | if (arg[0] == 'i' && arg[1] == 'f' | |
6309 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 6310 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
6311 | block_for_pc (sals.sals[i].pc), 0); |
6312 | else | |
6313 | error ("Junk at end of arguments."); | |
6314 | } | |
6315 | arg = save_arg; | |
6316 | } | |
6317 | ||
6318 | for (i = 0; i < sals.nelts; i++) | |
6319 | { | |
6320 | sal = sals.sals[i]; | |
6321 | ||
6322 | if (from_tty) | |
6323 | describe_other_breakpoints (sal.pc, sal.section); | |
6324 | ||
53a5351d JM |
6325 | /* Important -- this is an ordinary breakpoint. For platforms |
6326 | with callback support for exceptions, | |
6327 | create_exception_catchpoint() will create special bp types | |
6328 | (bp_catch_catch and bp_catch_throw), and there is code in | |
6329 | insert_breakpoints() and elsewhere that depends on that. */ | |
4d28f7a8 KB |
6330 | b = set_raw_breakpoint (sal, bp_breakpoint); |
6331 | set_breakpoint_count (breakpoint_count + 1); | |
6332 | b->number = breakpoint_count; | |
c906108c SS |
6333 | |
6334 | b->cond = cond; | |
b5de0fa7 EZ |
6335 | b->enable_state = bp_enabled; |
6336 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6337 | |
6338 | mention (b); | |
6339 | } | |
6340 | ||
6341 | if (sals.nelts > 1) | |
6342 | { | |
53a5351d JM |
6343 | warning ("Multiple breakpoints were set."); |
6344 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 6345 | } |
b8c9b27d | 6346 | xfree (sals.sals); |
c906108c SS |
6347 | } |
6348 | ||
c906108c | 6349 | static void |
fba45db2 | 6350 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6351 | { |
c5aa993b | 6352 | |
c906108c SS |
6353 | /* The first argument may be an event name, such as "start" or "load". |
6354 | If so, then handle it as such. If it doesn't match an event name, | |
6355 | then attempt to interpret it as an exception name. (This latter is | |
6356 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6357 | |
c906108c | 6358 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6359 | char *arg1_start = arg; |
6360 | char *arg1_end; | |
6361 | int arg1_length; | |
6362 | ||
c906108c SS |
6363 | if (arg1_start == NULL) |
6364 | { | |
c5aa993b | 6365 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6366 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6367 | /* return; */ | |
c5aa993b | 6368 | /* Now, this is not allowed */ |
c906108c SS |
6369 | error ("Catch requires an event name."); |
6370 | ||
6371 | } | |
6372 | arg1_end = ep_find_event_name_end (arg1_start); | |
6373 | if (arg1_end == NULL) | |
6374 | error ("catch requires an event"); | |
6375 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6376 | |
c906108c SS |
6377 | /* Try to match what we found against known event names. */ |
6378 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6379 | { | |
6380 | error ("Catch of signal not yet implemented"); | |
6381 | } | |
6382 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6383 | { | |
53a5351d JM |
6384 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6385 | tempflag, from_tty); | |
c906108c SS |
6386 | } |
6387 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6388 | { | |
53a5351d JM |
6389 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6390 | tempflag, from_tty); | |
c906108c SS |
6391 | } |
6392 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6393 | { | |
6394 | error ("Catch of thread_start not yet implemented"); | |
6395 | } | |
6396 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6397 | { | |
6398 | error ("Catch of thread_exit not yet implemented"); | |
6399 | } | |
6400 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6401 | { | |
6402 | error ("Catch of thread_join not yet implemented"); | |
6403 | } | |
6404 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6405 | { | |
6406 | error ("Catch of start not yet implemented"); | |
6407 | } | |
6408 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6409 | { | |
6410 | error ("Catch of exit not yet implemented"); | |
6411 | } | |
6412 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6413 | { | |
6414 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 6415 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6416 | #else |
6417 | error ("Catch of fork not yet implemented"); | |
6418 | #endif | |
6419 | } | |
6420 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6421 | { | |
6422 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 6423 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6424 | #else |
6425 | error ("Catch of vfork not yet implemented"); | |
6426 | #endif | |
6427 | } | |
6428 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6429 | { | |
6430 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 6431 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6432 | #else |
6433 | error ("Catch of exec not yet implemented"); | |
6434 | #endif | |
6435 | } | |
6436 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6437 | { | |
6438 | #if defined(SOLIB_ADD) | |
c5aa993b | 6439 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6440 | #else |
6441 | error ("Catch of load not implemented"); | |
6442 | #endif | |
6443 | } | |
6444 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6445 | { | |
6446 | #if defined(SOLIB_ADD) | |
c5aa993b | 6447 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6448 | #else |
6449 | error ("Catch of load not implemented"); | |
6450 | #endif | |
6451 | } | |
6452 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6453 | { | |
6454 | error ("Catch of stop not yet implemented"); | |
6455 | } | |
c5aa993b | 6456 | |
c906108c SS |
6457 | /* This doesn't appear to be an event name */ |
6458 | ||
6459 | else | |
6460 | { | |
6461 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6462 | as the name of an exception */ |
c906108c | 6463 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6464 | /* Now this is not allowed */ |
c906108c SS |
6465 | error ("Unknown event kind specified for catch"); |
6466 | ||
6467 | } | |
6468 | } | |
6469 | ||
6470 | /* Used by the gui, could be made a worker for other things. */ | |
6471 | ||
6472 | struct breakpoint * | |
fba45db2 | 6473 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6474 | { |
6475 | struct breakpoint *b; | |
4d28f7a8 | 6476 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6477 | set_breakpoint_count (breakpoint_count + 1); |
6478 | b->number = breakpoint_count; | |
c906108c SS |
6479 | b->cond = 0; |
6480 | b->thread = -1; | |
6481 | return b; | |
6482 | } | |
6483 | ||
6484 | #if 0 | |
6485 | /* These aren't used; I don't know what they were for. */ | |
6486 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
6487 | static void | |
fba45db2 | 6488 | disable_catch (char *args) |
c906108c SS |
6489 | { |
6490 | /* Map the disable command to catch clauses described in ARGS. */ | |
6491 | } | |
6492 | ||
6493 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
6494 | static void | |
fba45db2 | 6495 | enable_catch (char *args) |
c906108c SS |
6496 | { |
6497 | /* Map the disable command to catch clauses described in ARGS. */ | |
6498 | } | |
6499 | ||
6500 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
6501 | static void | |
fba45db2 | 6502 | delete_catch (char *args) |
c906108c SS |
6503 | { |
6504 | /* Map the delete command to catch clauses described in ARGS. */ | |
6505 | } | |
6506 | #endif /* 0 */ | |
6507 | ||
6508 | static void | |
fba45db2 | 6509 | catch_command (char *arg, int from_tty) |
c906108c SS |
6510 | { |
6511 | catch_command_1 (arg, 0, from_tty); | |
6512 | } | |
6513 | \f | |
6514 | ||
6515 | static void | |
fba45db2 | 6516 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6517 | { |
6518 | catch_command_1 (arg, 1, from_tty); | |
6519 | } | |
6520 | ||
80f8a6eb | 6521 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6522 | |
6523 | static void | |
fba45db2 | 6524 | clear_command (char *arg, int from_tty) |
c906108c | 6525 | { |
80f8a6eb | 6526 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6527 | int default_match; |
6528 | struct symtabs_and_lines sals; | |
6529 | struct symtab_and_line sal; | |
c906108c SS |
6530 | int i; |
6531 | ||
6532 | if (arg) | |
6533 | { | |
6534 | sals = decode_line_spec (arg, 1); | |
6535 | default_match = 0; | |
6536 | } | |
6537 | else | |
6538 | { | |
c5aa993b | 6539 | sals.sals = (struct symtab_and_line *) |
c906108c | 6540 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6541 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6542 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6543 | sal.line = default_breakpoint_line; |
6544 | sal.symtab = default_breakpoint_symtab; | |
6545 | sal.pc = default_breakpoint_address; | |
6546 | if (sal.symtab == 0) | |
6547 | error ("No source file specified."); | |
6548 | ||
6549 | sals.sals[0] = sal; | |
6550 | sals.nelts = 1; | |
6551 | ||
6552 | default_match = 1; | |
6553 | } | |
6554 | ||
6555 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6556 | to it. Do it in two passes, solely to preserve the current |
6557 | behavior that from_tty is forced true if we delete more than | |
6558 | one breakpoint. */ | |
c906108c | 6559 | |
80f8a6eb | 6560 | found = NULL; |
c906108c SS |
6561 | for (i = 0; i < sals.nelts; i++) |
6562 | { | |
6563 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6564 | If line given (pc == 0), clear all bpts on specified line. |
6565 | If defaulting, clear all bpts on default line | |
c906108c | 6566 | or at default pc. |
c5aa993b JM |
6567 | |
6568 | defaulting sal.pc != 0 tests to do | |
6569 | ||
6570 | 0 1 pc | |
6571 | 1 1 pc _and_ line | |
6572 | 0 0 line | |
6573 | 1 0 <can't happen> */ | |
c906108c SS |
6574 | |
6575 | sal = sals.sals[i]; | |
80f8a6eb | 6576 | prev = NULL; |
c906108c | 6577 | |
80f8a6eb MS |
6578 | /* Find all matching breakpoints, remove them from the |
6579 | breakpoint chain, and add them to the 'found' chain. */ | |
6580 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6581 | { |
80f8a6eb MS |
6582 | /* Are we going to delete b? */ |
6583 | if (b->type != bp_none | |
6584 | && b->type != bp_watchpoint | |
6585 | && b->type != bp_hardware_watchpoint | |
6586 | && b->type != bp_read_watchpoint | |
6587 | && b->type != bp_access_watchpoint | |
6588 | /* Not if b is a watchpoint of any sort... */ | |
6589 | && (((sal.pc && (b->address == sal.pc)) | |
6590 | && (!section_is_overlay (b->section) | |
6591 | || b->section == sal.section)) | |
6592 | /* Yes, if sal.pc matches b (modulo overlays). */ | |
6593 | || ((default_match || (0 == sal.pc)) | |
6594 | && b->source_file != NULL | |
6595 | && sal.symtab != NULL | |
6596 | && STREQ (b->source_file, sal.symtab->filename) | |
6597 | && b->line_number == sal.line))) | |
6598 | /* Yes, if sal source file and line matches b. */ | |
6599 | { | |
6600 | /* Remove it from breakpoint_chain... */ | |
6601 | if (b == breakpoint_chain) | |
6602 | { | |
6603 | /* b is at the head of the list */ | |
6604 | breakpoint_chain = b->next; | |
6605 | } | |
6606 | else | |
6607 | { | |
6608 | prev->next = b->next; | |
6609 | } | |
6610 | /* And add it to 'found' chain. */ | |
6611 | b->next = found; | |
6612 | found = b; | |
6613 | } | |
c906108c | 6614 | else |
80f8a6eb MS |
6615 | { |
6616 | /* Keep b, and keep a pointer to it. */ | |
6617 | prev = b; | |
6618 | } | |
c906108c | 6619 | } |
80f8a6eb MS |
6620 | } |
6621 | /* Now go thru the 'found' chain and delete them. */ | |
6622 | if (found == 0) | |
6623 | { | |
6624 | if (arg) | |
6625 | error ("No breakpoint at %s.", arg); | |
6626 | else | |
6627 | error ("No breakpoint at this line."); | |
6628 | } | |
c906108c | 6629 | |
80f8a6eb MS |
6630 | if (found->next) |
6631 | from_tty = 1; /* Always report if deleted more than one */ | |
6632 | if (from_tty) | |
6633 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6634 | breakpoints_changed (); | |
6635 | while (found) | |
6636 | { | |
c5aa993b | 6637 | if (from_tty) |
80f8a6eb MS |
6638 | printf_unfiltered ("%d ", found->number); |
6639 | tmp = found->next; | |
6640 | delete_breakpoint (found); | |
6641 | found = tmp; | |
c906108c | 6642 | } |
80f8a6eb MS |
6643 | if (from_tty) |
6644 | putchar_unfiltered ('\n'); | |
c906108c SS |
6645 | } |
6646 | \f | |
6647 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6648 | all breakpoints that are marked for deletion, whether hit or not. | |
6649 | This is called after any breakpoint is hit, or after errors. */ | |
6650 | ||
6651 | void | |
fba45db2 | 6652 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6653 | { |
6654 | struct breakpoint *b, *temp; | |
6655 | ||
6656 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6657 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6658 | && bs->stop) |
6659 | delete_breakpoint (bs->breakpoint_at); | |
6660 | ||
6661 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6662 | { |
b5de0fa7 | 6663 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6664 | delete_breakpoint (b); |
6665 | } | |
c906108c SS |
6666 | } |
6667 | ||
53a5351d JM |
6668 | /* Delete a breakpoint and clean up all traces of it in the data |
6669 | structures. */ | |
c906108c SS |
6670 | |
6671 | void | |
fba45db2 | 6672 | delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
6673 | { |
6674 | register struct breakpoint *b; | |
6675 | register bpstat bs; | |
6676 | ||
6677 | if (bpt == NULL) | |
6678 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6679 | ||
6680 | ||
6681 | /* Has this bp already been deleted? This can happen because multiple | |
6682 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6683 | ||
6684 | One example of this happening is a watchpoint's scope bp. When the | |
6685 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6686 | delete it. We also delete its scope bp. But the scope bp is marked | |
6687 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6688 | checked for auto-deleting bp's, which are deleted. | |
6689 | ||
6690 | A real solution to this problem might involve reference counts in bp's, | |
6691 | and/or giving them pointers back to their referencing bpstat's, and | |
6692 | teaching delete_breakpoint to only free a bp's storage when no more | |
6693 | references were extent. A cheaper bandaid was chosen. */ | |
6694 | if (bpt->type == bp_none) | |
6695 | return; | |
6696 | ||
6697 | if (delete_breakpoint_hook) | |
6698 | delete_breakpoint_hook (bpt); | |
104c1213 | 6699 | breakpoint_delete_event (bpt->number); |
c906108c SS |
6700 | |
6701 | if (bpt->inserted) | |
2e663524 | 6702 | remove_breakpoint (bpt, mark_inserted); |
c5aa993b | 6703 | |
c906108c SS |
6704 | if (breakpoint_chain == bpt) |
6705 | breakpoint_chain = bpt->next; | |
6706 | ||
6707 | /* If we have callback-style exception catchpoints, don't go through | |
6708 | the adjustments to the C++ runtime library etc. if the inferior | |
6709 | isn't actually running. target_enable_exception_callback for a | |
6710 | null target ops vector gives an undesirable error message, so we | |
6711 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6712 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6713 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6714 | { | |
6715 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
6716 | static char message[sizeof (message1) + 30]; | |
6717 | args_for_catchpoint_enable args; | |
6718 | ||
53a5351d JM |
6719 | /* Format possible error msg */ |
6720 | sprintf (message, message1, bpt->number); | |
6721 | args.kind = bpt->type == bp_catch_catch ? | |
6722 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6723 | args.enable_p = 0; |
c906108c SS |
6724 | catch_errors (cover_target_enable_exception_callback, &args, |
6725 | message, RETURN_MASK_ALL); | |
6726 | } | |
6727 | ||
6728 | ||
6729 | ALL_BREAKPOINTS (b) | |
6730 | if (b->next == bpt) | |
c5aa993b JM |
6731 | { |
6732 | b->next = bpt->next; | |
6733 | break; | |
6734 | } | |
c906108c | 6735 | |
9f60f21b | 6736 | check_duplicates (bpt); |
c906108c SS |
6737 | /* If this breakpoint was inserted, and there is another breakpoint |
6738 | at the same address, we need to insert the other breakpoint. */ | |
6739 | if (bpt->inserted | |
6740 | && bpt->type != bp_hardware_watchpoint | |
6741 | && bpt->type != bp_read_watchpoint | |
6742 | && bpt->type != bp_access_watchpoint | |
6743 | && bpt->type != bp_catch_fork | |
6744 | && bpt->type != bp_catch_vfork | |
6745 | && bpt->type != bp_catch_exec) | |
6746 | { | |
6747 | ALL_BREAKPOINTS (b) | |
6748 | if (b->address == bpt->address | |
6749 | && b->section == bpt->section | |
6750 | && !b->duplicate | |
b5de0fa7 EZ |
6751 | && b->enable_state != bp_disabled |
6752 | && b->enable_state != bp_shlib_disabled | |
6753 | && b->enable_state != bp_call_disabled) | |
c5aa993b JM |
6754 | { |
6755 | int val; | |
53a5351d | 6756 | |
c2c6d25f JM |
6757 | /* We should never reach this point if there is a permanent |
6758 | breakpoint at the same address as the one being deleted. | |
6759 | If there is a permanent breakpoint somewhere, it should | |
6760 | always be the only one inserted. */ | |
b5de0fa7 | 6761 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6762 | internal_error (__FILE__, __LINE__, |
6763 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6764 | "a permanent breakpoint"); |
6765 | ||
53a5351d JM |
6766 | if (b->type == bp_hardware_breakpoint) |
6767 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
6768 | else | |
6769 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
6770 | ||
81d0cc19 | 6771 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6772 | if (val != 0) |
6773 | { | |
81d0cc19 GS |
6774 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6775 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6776 | ||
6777 | ||
6778 | if (b->type == bp_hardware_breakpoint) | |
6779 | { | |
6780 | fprintf_unfiltered (tmp_error_stream, | |
6781 | "Cannot insert hardware breakpoint %d.\n" | |
6782 | "You may have requested too many hardware breakpoints.\n", | |
6783 | b->number); | |
6784 | } | |
6785 | else | |
6786 | { | |
6787 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6788 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
6789 | print_address_numeric (b->address, 1, tmp_error_stream); | |
6790 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
6791 | safe_strerror (val)); | |
6792 | } | |
6793 | ||
6794 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6795 | target_terminal_ours_for_output (); |
81d0cc19 | 6796 | error_stream(tmp_error_stream); |
c5aa993b JM |
6797 | } |
6798 | else | |
6799 | b->inserted = 1; | |
6800 | } | |
c906108c SS |
6801 | } |
6802 | ||
6803 | free_command_lines (&bpt->commands); | |
6804 | if (bpt->cond) | |
b8c9b27d | 6805 | xfree (bpt->cond); |
c906108c | 6806 | if (bpt->cond_string != NULL) |
b8c9b27d | 6807 | xfree (bpt->cond_string); |
c906108c | 6808 | if (bpt->addr_string != NULL) |
b8c9b27d | 6809 | xfree (bpt->addr_string); |
c906108c | 6810 | if (bpt->exp != NULL) |
b8c9b27d | 6811 | xfree (bpt->exp); |
c906108c | 6812 | if (bpt->exp_string != NULL) |
b8c9b27d | 6813 | xfree (bpt->exp_string); |
c906108c SS |
6814 | if (bpt->val != NULL) |
6815 | value_free (bpt->val); | |
6816 | if (bpt->source_file != NULL) | |
b8c9b27d | 6817 | xfree (bpt->source_file); |
c906108c | 6818 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6819 | xfree (bpt->dll_pathname); |
c906108c | 6820 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6821 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6822 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6823 | xfree (bpt->exec_pathname); |
c906108c SS |
6824 | |
6825 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6826 | /* FIXME, how can we find all bpstat's? | |
6827 | We just check stop_bpstat for now. */ | |
6828 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6829 | if (bs->breakpoint_at == bpt) | |
6830 | { | |
6831 | bs->breakpoint_at = NULL; | |
c906108c | 6832 | bs->old_val = NULL; |
c2b8ed2c | 6833 | /* bs->commands will be freed later. */ |
c906108c SS |
6834 | } |
6835 | /* On the chance that someone will soon try again to delete this same | |
6836 | bp, we mark it as deleted before freeing its storage. */ | |
6837 | bpt->type = bp_none; | |
6838 | ||
b8c9b27d | 6839 | xfree (bpt); |
c906108c SS |
6840 | } |
6841 | ||
4d6140d9 AC |
6842 | static void |
6843 | do_delete_breakpoint_cleanup (void *b) | |
6844 | { | |
6845 | delete_breakpoint (b); | |
6846 | } | |
6847 | ||
6848 | struct cleanup * | |
6849 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6850 | { | |
6851 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6852 | } | |
6853 | ||
6854 | struct cleanup * | |
6855 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6856 | { | |
6857 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6858 | } | |
6859 | ||
c906108c | 6860 | void |
fba45db2 | 6861 | delete_command (char *arg, int from_tty) |
c906108c SS |
6862 | { |
6863 | struct breakpoint *b, *temp; | |
6864 | ||
ea9365bb TT |
6865 | dont_repeat (); |
6866 | ||
c906108c SS |
6867 | if (arg == 0) |
6868 | { | |
6869 | int breaks_to_delete = 0; | |
6870 | ||
6871 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6872 | Do not delete internal or call-dummy breakpoints, these |
6873 | have to be deleted with an explicit breakpoint number argument. */ | |
6874 | ALL_BREAKPOINTS (b) | |
6875 | { | |
6876 | if (b->type != bp_call_dummy && | |
6877 | b->type != bp_shlib_event && | |
c4093a6a | 6878 | b->type != bp_thread_event && |
1900040c | 6879 | b->type != bp_overlay_event && |
c5aa993b JM |
6880 | b->number >= 0) |
6881 | breaks_to_delete = 1; | |
6882 | } | |
c906108c SS |
6883 | |
6884 | /* Ask user only if there are some breakpoints to delete. */ | |
6885 | if (!from_tty | |
6886 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6887 | { | |
c5aa993b JM |
6888 | ALL_BREAKPOINTS_SAFE (b, temp) |
6889 | { | |
6890 | if (b->type != bp_call_dummy && | |
6891 | b->type != bp_shlib_event && | |
c4093a6a | 6892 | b->type != bp_thread_event && |
1900040c | 6893 | b->type != bp_overlay_event && |
c5aa993b JM |
6894 | b->number >= 0) |
6895 | delete_breakpoint (b); | |
6896 | } | |
c906108c SS |
6897 | } |
6898 | } | |
6899 | else | |
6900 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6901 | } | |
6902 | ||
6903 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6904 | The value we return ends up being the return value from catch_errors. | |
6905 | Unused in this case. */ | |
6906 | ||
6907 | static int | |
fba45db2 | 6908 | breakpoint_re_set_one (PTR bint) |
c906108c | 6909 | { |
53a5351d JM |
6910 | /* get past catch_errs */ |
6911 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6912 | struct value *mark; |
6913 | int i; | |
6914 | struct symtabs_and_lines sals; | |
6915 | char *s; | |
b5de0fa7 | 6916 | enum enable_state save_enable; |
c906108c SS |
6917 | |
6918 | switch (b->type) | |
6919 | { | |
6920 | case bp_none: | |
53a5351d JM |
6921 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6922 | b->number); | |
c906108c SS |
6923 | return 0; |
6924 | case bp_breakpoint: | |
6925 | case bp_hardware_breakpoint: | |
6926 | case bp_catch_load: | |
6927 | case bp_catch_unload: | |
6928 | if (b->addr_string == NULL) | |
6929 | { | |
6930 | /* Anything without a string can't be re-set. */ | |
6931 | delete_breakpoint (b); | |
6932 | return 0; | |
6933 | } | |
b18c45ed AC |
6934 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
6935 | ||
6936 | ``And a hack it is, although Apple's Darwin version of GDB | |
6937 | contains an almost identical hack to implement a "future | |
6938 | break" command. It seems to work in many real world cases, | |
6939 | but it is easy to come up with a test case where the patch | |
6940 | doesn't help at all.'' | |
6941 | ||
6942 | ``It seems that the way GDB implements breakpoints - in - | |
6943 | shared - libraries was designed for a.out shared library | |
6944 | systems (SunOS 4) where shared libraries were loaded at a | |
6945 | fixed address in memory. Since ELF shared libraries can (and | |
6946 | will) be loaded at any address in memory, things break. | |
6947 | Fixing this is not trivial. Therefore, I'm not sure whether | |
6948 | we should add this hack to the branch only. I cannot | |
6949 | guarantee that things will be fixed on the trunk in the near | |
6950 | future.'' | |
6951 | ||
6952 | In case we have a problem, disable this breakpoint. We'll | |
6953 | restore its status if we succeed. Don't disable a | |
6954 | shlib_disabled breakpoint though. There's a fair chance we | |
6955 | can't re-set it if the shared library it's in hasn't been | |
6956 | loaded yet. */ | |
b5de0fa7 | 6957 | save_enable = b->enable_state; |
b18c45ed AC |
6958 | if (b->enable_state != bp_shlib_disabled) |
6959 | b->enable_state = bp_disabled; | |
c906108c SS |
6960 | |
6961 | set_language (b->language); | |
6962 | input_radix = b->input_radix; | |
6963 | s = b->addr_string; | |
c5aa993b | 6964 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6965 | for (i = 0; i < sals.nelts; i++) |
6966 | { | |
6967 | resolve_sal_pc (&sals.sals[i]); | |
6968 | ||
6969 | /* Reparse conditions, they might contain references to the | |
6970 | old symtab. */ | |
6971 | if (b->cond_string != NULL) | |
6972 | { | |
6973 | s = b->cond_string; | |
6974 | if (b->cond) | |
b8c9b27d | 6975 | xfree (b->cond); |
c906108c SS |
6976 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
6977 | } | |
6978 | ||
c5aa993b | 6979 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 6980 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
6981 | /* ...or new and old breakpoints both have source files, and |
6982 | the source file name or the line number changes... */ | |
c906108c SS |
6983 | || (b->source_file != NULL |
6984 | && sals.sals[i].symtab != NULL | |
6985 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
6986 | || b->line_number != sals.sals[i].line) | |
c906108c | 6987 | ) |
c5aa993b JM |
6988 | /* ...or we switch between having a source file and not having |
6989 | one. */ | |
6990 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
6991 | ) | |
c906108c SS |
6992 | { |
6993 | if (b->source_file != NULL) | |
b8c9b27d | 6994 | xfree (b->source_file); |
c906108c SS |
6995 | if (sals.sals[i].symtab == NULL) |
6996 | b->source_file = NULL; | |
6997 | else | |
6998 | b->source_file = | |
6999 | savestring (sals.sals[i].symtab->filename, | |
7000 | strlen (sals.sals[i].symtab->filename)); | |
7001 | b->line_number = sals.sals[i].line; | |
7002 | b->address = sals.sals[i].pc; | |
7003 | ||
c5aa993b | 7004 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7005 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7006 | breakpoints. */ |
c906108c SS |
7007 | |
7008 | mention (b); | |
7009 | ||
7010 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7011 | rather than once for every breakpoint. */ |
c906108c SS |
7012 | breakpoints_changed (); |
7013 | } | |
7014 | b->section = sals.sals[i].section; | |
b5de0fa7 | 7015 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7016 | |
7017 | ||
c5aa993b | 7018 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7019 | can be used. */ |
9f60f21b | 7020 | check_duplicates (b); |
c906108c SS |
7021 | |
7022 | } | |
b8c9b27d | 7023 | xfree (sals.sals); |
c906108c SS |
7024 | break; |
7025 | ||
7026 | case bp_watchpoint: | |
7027 | case bp_hardware_watchpoint: | |
7028 | case bp_read_watchpoint: | |
7029 | case bp_access_watchpoint: | |
7030 | innermost_block = NULL; | |
53a5351d JM |
7031 | /* The issue arises of what context to evaluate this in. The |
7032 | same one as when it was set, but what does that mean when | |
7033 | symbols have been re-read? We could save the filename and | |
7034 | functionname, but if the context is more local than that, the | |
7035 | best we could do would be something like how many levels deep | |
7036 | and which index at that particular level, but that's going to | |
7037 | be less stable than filenames or function names. */ | |
7038 | ||
c906108c SS |
7039 | /* So for now, just use a global context. */ |
7040 | if (b->exp) | |
b8c9b27d | 7041 | xfree (b->exp); |
c906108c SS |
7042 | b->exp = parse_expression (b->exp_string); |
7043 | b->exp_valid_block = innermost_block; | |
7044 | mark = value_mark (); | |
7045 | if (b->val) | |
7046 | value_free (b->val); | |
7047 | b->val = evaluate_expression (b->exp); | |
7048 | release_value (b->val); | |
7049 | if (VALUE_LAZY (b->val)) | |
7050 | value_fetch_lazy (b->val); | |
7051 | ||
7052 | if (b->cond_string != NULL) | |
7053 | { | |
7054 | s = b->cond_string; | |
7055 | if (b->cond) | |
b8c9b27d | 7056 | xfree (b->cond); |
c5aa993b | 7057 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7058 | } |
b5de0fa7 | 7059 | if (b->enable_state == bp_enabled) |
c906108c SS |
7060 | mention (b); |
7061 | value_free_to_mark (mark); | |
7062 | break; | |
c5aa993b JM |
7063 | case bp_catch_catch: |
7064 | case bp_catch_throw: | |
c906108c | 7065 | break; |
c5aa993b JM |
7066 | /* We needn't really do anything to reset these, since the mask |
7067 | that requests them is unaffected by e.g., new libraries being | |
7068 | loaded. */ | |
c906108c SS |
7069 | case bp_catch_fork: |
7070 | case bp_catch_vfork: | |
7071 | case bp_catch_exec: | |
7072 | break; | |
c5aa993b | 7073 | |
c906108c SS |
7074 | default: |
7075 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7076 | /* fall through */ | |
1900040c MS |
7077 | /* Delete longjmp and overlay event breakpoints; they will be |
7078 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7079 | case bp_longjmp: |
7080 | case bp_longjmp_resume: | |
1900040c | 7081 | case bp_overlay_event: |
c906108c SS |
7082 | delete_breakpoint (b); |
7083 | break; | |
7084 | ||
c5aa993b JM |
7085 | /* This breakpoint is special, it's set up when the inferior |
7086 | starts and we really don't want to touch it. */ | |
c906108c SS |
7087 | case bp_shlib_event: |
7088 | ||
c4093a6a JM |
7089 | /* Like bp_shlib_event, this breakpoint type is special. |
7090 | Once it is set up, we do not want to touch it. */ | |
7091 | case bp_thread_event: | |
7092 | ||
c5aa993b JM |
7093 | /* Keep temporary breakpoints, which can be encountered when we step |
7094 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7095 | Otherwise these should have been blown away via the cleanup chain | |
7096 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7097 | case bp_until: |
7098 | case bp_finish: | |
7099 | case bp_watchpoint_scope: | |
7100 | case bp_call_dummy: | |
7101 | case bp_step_resume: | |
7102 | break; | |
7103 | } | |
7104 | ||
7105 | return 0; | |
7106 | } | |
7107 | ||
7108 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7109 | void | |
fba45db2 | 7110 | breakpoint_re_set (void) |
c906108c SS |
7111 | { |
7112 | struct breakpoint *b, *temp; | |
7113 | enum language save_language; | |
7114 | int save_input_radix; | |
7115 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
7116 | char message[sizeof (message1) + 30 /* slop */ ]; |
7117 | ||
c906108c SS |
7118 | save_language = current_language->la_language; |
7119 | save_input_radix = input_radix; | |
7120 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7121 | { |
53a5351d JM |
7122 | /* Format possible error msg */ |
7123 | sprintf (message, message1, b->number); | |
c5aa993b JM |
7124 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
7125 | } | |
c906108c SS |
7126 | set_language (save_language); |
7127 | input_radix = save_input_radix; | |
7128 | ||
9df628e0 RE |
7129 | if (GET_LONGJMP_TARGET_P ()) |
7130 | { | |
7131 | create_longjmp_breakpoint ("longjmp"); | |
7132 | create_longjmp_breakpoint ("_longjmp"); | |
7133 | create_longjmp_breakpoint ("siglongjmp"); | |
7134 | create_longjmp_breakpoint ("_siglongjmp"); | |
7135 | create_longjmp_breakpoint (NULL); | |
7136 | } | |
1900040c MS |
7137 | |
7138 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7139 | } |
7140 | \f | |
c906108c SS |
7141 | /* Reset the thread number of this breakpoint: |
7142 | ||
7143 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7144 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7145 | void |
fba45db2 | 7146 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7147 | { |
7148 | if (b->thread != -1) | |
7149 | { | |
39f77062 KB |
7150 | if (in_thread_list (inferior_ptid)) |
7151 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7152 | } |
7153 | } | |
7154 | ||
03ac34d5 MS |
7155 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7156 | If from_tty is nonzero, it prints a message to that effect, | |
7157 | which ends with a period (no newline). */ | |
7158 | ||
c906108c | 7159 | void |
fba45db2 | 7160 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c SS |
7161 | { |
7162 | register struct breakpoint *b; | |
7163 | ||
7164 | if (count < 0) | |
7165 | count = 0; | |
7166 | ||
7167 | ALL_BREAKPOINTS (b) | |
7168 | if (b->number == bptnum) | |
c5aa993b JM |
7169 | { |
7170 | b->ignore_count = count; | |
221ea385 KS |
7171 | if (from_tty) |
7172 | { | |
7173 | if (count == 0) | |
7174 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7175 | bptnum); | |
7176 | else if (count == 1) | |
7177 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7178 | bptnum); | |
7179 | else | |
7180 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7181 | count, bptnum); | |
7182 | } | |
c5aa993b | 7183 | breakpoints_changed (); |
221ea385 | 7184 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7185 | return; |
7186 | } | |
c906108c SS |
7187 | |
7188 | error ("No breakpoint number %d.", bptnum); | |
7189 | } | |
7190 | ||
7191 | /* Clear the ignore counts of all breakpoints. */ | |
7192 | void | |
fba45db2 | 7193 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7194 | { |
7195 | struct breakpoint *b; | |
7196 | ||
7197 | ALL_BREAKPOINTS (b) | |
7198 | b->ignore_count = 0; | |
7199 | } | |
7200 | ||
7201 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7202 | ||
7203 | static void | |
fba45db2 | 7204 | ignore_command (char *args, int from_tty) |
c906108c SS |
7205 | { |
7206 | char *p = args; | |
7207 | register int num; | |
7208 | ||
7209 | if (p == 0) | |
7210 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7211 | |
c906108c | 7212 | num = get_number (&p); |
5c44784c JM |
7213 | if (num == 0) |
7214 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7215 | if (*p == 0) |
7216 | error ("Second argument (specified ignore-count) is missing."); | |
7217 | ||
7218 | set_ignore_count (num, | |
7219 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7220 | from_tty); | |
221ea385 KS |
7221 | if (from_tty) |
7222 | printf_filtered ("\n"); | |
c906108c SS |
7223 | } |
7224 | \f | |
7225 | /* Call FUNCTION on each of the breakpoints | |
7226 | whose numbers are given in ARGS. */ | |
7227 | ||
7228 | static void | |
831662b3 | 7229 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c SS |
7230 | { |
7231 | register char *p = args; | |
7232 | char *p1; | |
7233 | register int num; | |
5c44784c | 7234 | register struct breakpoint *b, *tmp; |
11cf8741 | 7235 | int match; |
c906108c SS |
7236 | |
7237 | if (p == 0) | |
7238 | error_no_arg ("one or more breakpoint numbers"); | |
7239 | ||
7240 | while (*p) | |
7241 | { | |
11cf8741 | 7242 | match = 0; |
c906108c | 7243 | p1 = p; |
c5aa993b | 7244 | |
5c44784c JM |
7245 | num = get_number_or_range (&p1); |
7246 | if (num == 0) | |
c5aa993b | 7247 | { |
5c44784c JM |
7248 | warning ("bad breakpoint number at or near '%s'", p); |
7249 | } | |
7250 | else | |
7251 | { | |
7252 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7253 | if (b->number == num) | |
7254 | { | |
7255 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7256 | match = 1; |
5c44784c JM |
7257 | function (b); |
7258 | if (related_breakpoint) | |
7259 | function (related_breakpoint); | |
11cf8741 | 7260 | break; |
5c44784c | 7261 | } |
11cf8741 JM |
7262 | if (match == 0) |
7263 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7264 | } |
c906108c SS |
7265 | p = p1; |
7266 | } | |
7267 | } | |
7268 | ||
1900040c MS |
7269 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7270 | If from_tty is nonzero, it prints a message to that effect, | |
7271 | which ends with a period (no newline). */ | |
7272 | ||
c906108c | 7273 | void |
fba45db2 | 7274 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7275 | { |
7276 | /* Never disable a watchpoint scope breakpoint; we want to | |
7277 | hit them when we leave scope so we can delete both the | |
7278 | watchpoint and its scope breakpoint at that time. */ | |
7279 | if (bpt->type == bp_watchpoint_scope) | |
7280 | return; | |
7281 | ||
c2c6d25f | 7282 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7283 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7284 | return; |
7285 | ||
b5de0fa7 | 7286 | bpt->enable_state = bp_disabled; |
c906108c | 7287 | |
9f60f21b | 7288 | check_duplicates (bpt); |
c906108c SS |
7289 | |
7290 | if (modify_breakpoint_hook) | |
7291 | modify_breakpoint_hook (bpt); | |
104c1213 | 7292 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7293 | } |
7294 | ||
7295 | /* ARGSUSED */ | |
7296 | static void | |
fba45db2 | 7297 | disable_command (char *args, int from_tty) |
c906108c SS |
7298 | { |
7299 | register struct breakpoint *bpt; | |
7300 | if (args == 0) | |
7301 | ALL_BREAKPOINTS (bpt) | |
7302 | switch (bpt->type) | |
c5aa993b JM |
7303 | { |
7304 | case bp_none: | |
53a5351d JM |
7305 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7306 | bpt->number); | |
c5aa993b JM |
7307 | continue; |
7308 | case bp_breakpoint: | |
7309 | case bp_catch_load: | |
7310 | case bp_catch_unload: | |
7311 | case bp_catch_fork: | |
7312 | case bp_catch_vfork: | |
7313 | case bp_catch_exec: | |
7314 | case bp_catch_catch: | |
7315 | case bp_catch_throw: | |
7316 | case bp_hardware_breakpoint: | |
7317 | case bp_watchpoint: | |
7318 | case bp_hardware_watchpoint: | |
7319 | case bp_read_watchpoint: | |
7320 | case bp_access_watchpoint: | |
7321 | disable_breakpoint (bpt); | |
7322 | default: | |
7323 | continue; | |
7324 | } | |
c906108c SS |
7325 | else |
7326 | map_breakpoint_numbers (args, disable_breakpoint); | |
7327 | } | |
7328 | ||
7329 | static void | |
fba45db2 | 7330 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7331 | { |
7332 | struct frame_info *save_selected_frame = NULL; | |
7333 | int save_selected_frame_level = -1; | |
7334 | int target_resources_ok, other_type_used; | |
7335 | struct value *mark; | |
7336 | ||
7337 | if (bpt->type == bp_hardware_breakpoint) | |
7338 | { | |
7339 | int i; | |
c5aa993b | 7340 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7341 | target_resources_ok = |
7342 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7343 | i + 1, 0); | |
c906108c | 7344 | if (target_resources_ok == 0) |
c5aa993b | 7345 | error ("No hardware breakpoint support in the target."); |
c906108c | 7346 | else if (target_resources_ok < 0) |
c5aa993b | 7347 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7348 | } |
7349 | ||
b5de0fa7 EZ |
7350 | if (bpt->enable_state != bp_permanent) |
7351 | bpt->enable_state = bp_enabled; | |
c906108c | 7352 | bpt->disposition = disposition; |
9f60f21b | 7353 | check_duplicates (bpt); |
c906108c SS |
7354 | breakpoints_changed (); |
7355 | ||
53a5351d JM |
7356 | if (bpt->type == bp_watchpoint || |
7357 | bpt->type == bp_hardware_watchpoint || | |
7358 | bpt->type == bp_read_watchpoint || | |
7359 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7360 | { |
7361 | if (bpt->exp_valid_block != NULL) | |
7362 | { | |
7363 | struct frame_info *fr = | |
101dcfbe | 7364 | fr = frame_find_by_id (bpt->watchpoint_frame); |
c906108c SS |
7365 | if (fr == NULL) |
7366 | { | |
7367 | printf_filtered ("\ | |
7368 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7369 | is valid is not currently in scope.\n", bpt->number); | |
b5de0fa7 | 7370 | bpt->enable_state = bp_disabled; |
c906108c SS |
7371 | return; |
7372 | } | |
7373 | ||
6e7f8b9c AC |
7374 | save_selected_frame = deprecated_selected_frame; |
7375 | save_selected_frame_level = frame_relative_level (deprecated_selected_frame); | |
0f7d239c | 7376 | select_frame (fr); |
c906108c SS |
7377 | } |
7378 | ||
7379 | value_free (bpt->val); | |
7380 | mark = value_mark (); | |
7381 | bpt->val = evaluate_expression (bpt->exp); | |
7382 | release_value (bpt->val); | |
7383 | if (VALUE_LAZY (bpt->val)) | |
7384 | value_fetch_lazy (bpt->val); | |
7385 | ||
7386 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7387 | bpt->type == bp_read_watchpoint || |
7388 | bpt->type == bp_access_watchpoint) | |
7389 | { | |
7390 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7391 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7392 | ||
7393 | /* Hack around 'unused var' error for some targets here */ | |
7394 | (void) mem_cnt, i; | |
7395 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7396 | bpt->type, i + mem_cnt, other_type_used); | |
7397 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7398 | bp_watchpoint in the following condition */ | |
7399 | if (target_resources_ok < 0) | |
7400 | { | |
7401 | printf_filtered ("\ | |
c906108c SS |
7402 | Cannot enable watchpoint %d because target watch resources\n\ |
7403 | have been allocated for other watchpoints.\n", bpt->number); | |
b5de0fa7 | 7404 | bpt->enable_state = bp_disabled; |
c5aa993b JM |
7405 | value_free_to_mark (mark); |
7406 | return; | |
7407 | } | |
7408 | } | |
c906108c SS |
7409 | |
7410 | if (save_selected_frame_level >= 0) | |
0f7d239c | 7411 | select_frame (save_selected_frame); |
c906108c SS |
7412 | value_free_to_mark (mark); |
7413 | } | |
7414 | if (modify_breakpoint_hook) | |
7415 | modify_breakpoint_hook (bpt); | |
104c1213 | 7416 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7417 | } |
7418 | ||
7419 | void | |
fba45db2 | 7420 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7421 | { |
7422 | do_enable_breakpoint (bpt, bpt->disposition); | |
7423 | } | |
7424 | ||
7425 | /* The enable command enables the specified breakpoints (or all defined | |
7426 | breakpoints) so they once again become (or continue to be) effective | |
7427 | in stopping the inferior. */ | |
7428 | ||
7429 | /* ARGSUSED */ | |
7430 | static void | |
fba45db2 | 7431 | enable_command (char *args, int from_tty) |
c906108c SS |
7432 | { |
7433 | register struct breakpoint *bpt; | |
7434 | if (args == 0) | |
7435 | ALL_BREAKPOINTS (bpt) | |
7436 | switch (bpt->type) | |
c5aa993b JM |
7437 | { |
7438 | case bp_none: | |
53a5351d JM |
7439 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7440 | bpt->number); | |
c5aa993b JM |
7441 | continue; |
7442 | case bp_breakpoint: | |
7443 | case bp_catch_load: | |
7444 | case bp_catch_unload: | |
7445 | case bp_catch_fork: | |
7446 | case bp_catch_vfork: | |
7447 | case bp_catch_exec: | |
7448 | case bp_catch_catch: | |
7449 | case bp_catch_throw: | |
7450 | case bp_hardware_breakpoint: | |
7451 | case bp_watchpoint: | |
7452 | case bp_hardware_watchpoint: | |
7453 | case bp_read_watchpoint: | |
7454 | case bp_access_watchpoint: | |
7455 | enable_breakpoint (bpt); | |
7456 | default: | |
7457 | continue; | |
7458 | } | |
c906108c SS |
7459 | else |
7460 | map_breakpoint_numbers (args, enable_breakpoint); | |
7461 | } | |
7462 | ||
7463 | static void | |
fba45db2 | 7464 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7465 | { |
b5de0fa7 | 7466 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7467 | } |
7468 | ||
7469 | /* ARGSUSED */ | |
7470 | static void | |
fba45db2 | 7471 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7472 | { |
7473 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7474 | } | |
7475 | ||
7476 | static void | |
fba45db2 | 7477 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7478 | { |
b5de0fa7 | 7479 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7480 | } |
7481 | ||
7482 | /* ARGSUSED */ | |
7483 | static void | |
fba45db2 | 7484 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7485 | { |
7486 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7487 | } | |
7488 | \f | |
7489 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7490 | ||
7491 | struct symtabs_and_lines | |
fba45db2 | 7492 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7493 | { |
7494 | struct symtabs_and_lines sals; | |
7495 | if (string == 0) | |
7496 | error ("Empty line specification."); | |
7497 | if (default_breakpoint_valid) | |
7498 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7499 | default_breakpoint_symtab, |
7500 | default_breakpoint_line, | |
c5aa993b | 7501 | (char ***) NULL); |
c906108c SS |
7502 | else |
7503 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 7504 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7505 | if (*string) |
7506 | error ("Junk at end of line specification: %s", string); | |
7507 | return sals; | |
7508 | } | |
7509 | \f | |
7510 | void | |
fba45db2 | 7511 | _initialize_breakpoint (void) |
c906108c SS |
7512 | { |
7513 | struct cmd_list_element *c; | |
7514 | ||
7515 | breakpoint_chain = 0; | |
7516 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7517 | before a breakpoint is set. */ | |
7518 | breakpoint_count = 0; | |
7519 | ||
7520 | add_com ("ignore", class_breakpoint, ignore_command, | |
7521 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7522 | Usage is `ignore N COUNT'."); | |
7523 | if (xdb_commands) | |
c5aa993b | 7524 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7525 | |
7526 | add_com ("commands", class_breakpoint, commands_command, | |
7527 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7528 | Give breakpoint number as argument after \"commands\".\n\ | |
7529 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7530 | The commands themselves follow starting on the next line.\n\ | |
7531 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7532 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7533 | then no output is printed when it is hit, except what the commands print."); | |
7534 | ||
7535 | add_com ("condition", class_breakpoint, condition_command, | |
7536 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7537 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7538 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7539 | |
c94fdfd0 EZ |
7540 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7541 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7542 | Like \"break\" except the breakpoint is only temporary,\n\ |
7543 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7544 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7545 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7546 | |
c94fdfd0 EZ |
7547 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7548 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7549 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7550 | some target hardware may not have this support."); | |
5ba2abeb | 7551 | set_cmd_completer (c, location_completer); |
c906108c | 7552 | |
c94fdfd0 EZ |
7553 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7554 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7555 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7556 | so it will be deleted when hit."); | |
5ba2abeb | 7557 | set_cmd_completer (c, location_completer); |
c906108c SS |
7558 | |
7559 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7560 | "Enable some breakpoints.\n\ | |
7561 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7562 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7563 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7564 | With a subcommand you can enable temporarily.", | |
7565 | &enablelist, "enable ", 1, &cmdlist); | |
7566 | if (xdb_commands) | |
c5aa993b JM |
7567 | add_com ("ab", class_breakpoint, enable_command, |
7568 | "Enable some breakpoints.\n\ | |
c906108c SS |
7569 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7570 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7571 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7572 | With a subcommand you can enable temporarily."); | |
7573 | ||
7574 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7575 | ||
7576 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7577 | "Enable some breakpoints.\n\ |
c906108c SS |
7578 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7579 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7580 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7581 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7582 | |
7583 | add_cmd ("once", no_class, enable_once_command, | |
7584 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7585 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7586 | &enablebreaklist); | |
7587 | ||
7588 | add_cmd ("delete", no_class, enable_delete_command, | |
7589 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7590 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7591 | &enablebreaklist); | |
7592 | ||
7593 | add_cmd ("delete", no_class, enable_delete_command, | |
7594 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7595 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7596 | &enablelist); | |
7597 | ||
7598 | add_cmd ("once", no_class, enable_once_command, | |
7599 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7600 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7601 | &enablelist); | |
7602 | ||
7603 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7604 | "Disable some breakpoints.\n\ |
c906108c SS |
7605 | Arguments are breakpoint numbers with spaces in between.\n\ |
7606 | To disable all breakpoints, give no argument.\n\ | |
7607 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7608 | &disablelist, "disable ", 1, &cmdlist); | |
7609 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7610 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7611 | if (xdb_commands) | |
c5aa993b JM |
7612 | add_com ("sb", class_breakpoint, disable_command, |
7613 | "Disable some breakpoints.\n\ | |
c906108c SS |
7614 | Arguments are breakpoint numbers with spaces in between.\n\ |
7615 | To disable all breakpoints, give no argument.\n\ | |
7616 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7617 | ||
7618 | add_cmd ("breakpoints", class_alias, disable_command, | |
7619 | "Disable some breakpoints.\n\ | |
7620 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7621 | To disable all breakpoints, give no argument.\n\ | |
7622 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7623 | This command may be abbreviated \"disable\".", | |
7624 | &disablelist); | |
7625 | ||
7626 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7627 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7628 | Arguments are breakpoint numbers with spaces in between.\n\ |
7629 | To delete all breakpoints, give no argument.\n\ | |
7630 | \n\ | |
7631 | Also a prefix command for deletion of other GDB objects.\n\ | |
7632 | The \"unset\" command is also an alias for \"delete\".", | |
7633 | &deletelist, "delete ", 1, &cmdlist); | |
7634 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7635 | if (xdb_commands) | |
7636 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7637 | "Delete some breakpoints.\n\ |
c906108c SS |
7638 | Arguments are breakpoint numbers with spaces in between.\n\ |
7639 | To delete all breakpoints, give no argument.\n"); | |
7640 | ||
7641 | add_cmd ("breakpoints", class_alias, delete_command, | |
7642 | "Delete some breakpoints or auto-display expressions.\n\ | |
7643 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7644 | To delete all breakpoints, give no argument.\n\ | |
7645 | This command may be abbreviated \"delete\".", | |
7646 | &deletelist); | |
7647 | ||
7648 | add_com ("clear", class_breakpoint, clear_command, | |
7649 | concat ("Clear breakpoint at specified line or function.\n\ | |
7650 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7651 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7652 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7653 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7654 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7655 | is executing in.\n\ |
7656 | \n\ | |
7657 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7658 | ||
c94fdfd0 EZ |
7659 | c = add_com ("break", class_breakpoint, break_command, |
7660 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7661 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7662 | If line number is specified, break at start of code for that line.\n\ | |
7663 | If function is specified, break at start of code for that function.\n\ | |
7664 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7665 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7666 | This is useful for breaking on return to a stack frame.\n\ |
7667 | \n\ | |
7668 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7669 | \n\ | |
7670 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7671 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7672 | |
c906108c SS |
7673 | add_com_alias ("b", "break", class_run, 1); |
7674 | add_com_alias ("br", "break", class_run, 1); | |
7675 | add_com_alias ("bre", "break", class_run, 1); | |
7676 | add_com_alias ("brea", "break", class_run, 1); | |
7677 | ||
502fd408 | 7678 | if (xdb_commands) |
c906108c SS |
7679 | { |
7680 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7681 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7682 | } |
7683 | ||
7684 | if (dbx_commands) | |
7685 | { | |
c5aa993b JM |
7686 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7687 | "Break in function/address or break at a line in the current file.", | |
7688 | &stoplist, "stop ", 1, &cmdlist); | |
7689 | add_cmd ("in", class_breakpoint, stopin_command, | |
7690 | "Break in function or address.\n", &stoplist); | |
7691 | add_cmd ("at", class_breakpoint, stopat_command, | |
7692 | "Break at a line in the current file.\n", &stoplist); | |
7693 | add_com ("status", class_info, breakpoints_info, | |
7694 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7695 | The \"Type\" column indicates one of:\n\ |
7696 | \tbreakpoint - normal breakpoint\n\ | |
7697 | \twatchpoint - watchpoint\n\ | |
7698 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7699 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7700 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7701 | address and file/line number respectively.\n\n", | |
c5aa993b | 7702 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7703 | are set to the address of the last breakpoint listed.\n\n\ |
7704 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7705 | breakpoint set.", NULL)); | |
7706 | } | |
7707 | ||
7708 | add_info ("breakpoints", breakpoints_info, | |
7709 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7710 | The \"Type\" column indicates one of:\n\ | |
7711 | \tbreakpoint - normal breakpoint\n\ | |
7712 | \twatchpoint - watchpoint\n\ | |
7713 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7714 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7715 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7716 | address and file/line number respectively.\n\n", | |
c5aa993b | 7717 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7718 | are set to the address of the last breakpoint listed.\n\n\ |
7719 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7720 | breakpoint set.", NULL)); | |
7721 | ||
7722 | if (xdb_commands) | |
c5aa993b JM |
7723 | add_com ("lb", class_breakpoint, breakpoints_info, |
7724 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7725 | The \"Type\" column indicates one of:\n\ |
7726 | \tbreakpoint - normal breakpoint\n\ | |
7727 | \twatchpoint - watchpoint\n\ | |
7728 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7729 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7730 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7731 | address and file/line number respectively.\n\n", | |
c5aa993b | 7732 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7733 | are set to the address of the last breakpoint listed.\n\n\ |
7734 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7735 | breakpoint set.", NULL)); | |
7736 | ||
c906108c | 7737 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7738 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7739 | The \"Type\" column indicates one of:\n\ |
7740 | \tbreakpoint - normal breakpoint\n\ | |
7741 | \twatchpoint - watchpoint\n\ | |
7742 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7743 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7744 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7745 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7746 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7747 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7748 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7749 | address and file/line number respectively.\n\n", | |
c5aa993b | 7750 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7751 | are set to the address of the last breakpoint listed.\n\n\ |
7752 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7753 | breakpoint set.", NULL), | |
7754 | &maintenanceinfolist); | |
7755 | ||
c906108c | 7756 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7757 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7758 | Raised signals may be caught:\n\ |
7759 | \tcatch signal - all signals\n\ | |
7760 | \tcatch signal <signame> - a particular signal\n\ | |
7761 | Raised exceptions may be caught:\n\ | |
7762 | \tcatch throw - all exceptions, when thrown\n\ | |
7763 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7764 | \tcatch catch - all exceptions, when caught\n\ | |
7765 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7766 | Thread or process events may be caught:\n\ | |
7767 | \tcatch thread_start - any threads, just after creation\n\ | |
7768 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7769 | \tcatch thread_join - any threads, just after joins\n\ | |
7770 | Process events may be caught:\n\ | |
7771 | \tcatch start - any processes, just after creation\n\ | |
7772 | \tcatch exit - any processes, just before expiration\n\ | |
7773 | \tcatch fork - calls to fork()\n\ | |
7774 | \tcatch vfork - calls to vfork()\n\ | |
7775 | \tcatch exec - calls to exec()\n\ | |
7776 | Dynamically-linked library events may be caught:\n\ | |
7777 | \tcatch load - loads of any library\n\ | |
7778 | \tcatch load <libname> - loads of a particular library\n\ | |
7779 | \tcatch unload - unloads of any library\n\ | |
7780 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7781 | The act of your program's execution stopping may also be caught:\n\ | |
7782 | \tcatch stop\n\n\ | |
7783 | C++ exceptions may be caught:\n\ | |
7784 | \tcatch throw - all exceptions, when thrown\n\ | |
7785 | \tcatch catch - all exceptions, when caught\n\ | |
7786 | \n\ | |
7787 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7788 | after a fork or vfork is caught.\n\n\ | |
7789 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7790 | |
c906108c | 7791 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7792 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7793 | Args like \"catch\" command.\n\ |
7794 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7795 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7796 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 7797 | |
c94fdfd0 EZ |
7798 | c = add_com ("watch", class_breakpoint, watch_command, |
7799 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7800 | A watchpoint stops execution of your program whenever the value of\n\ |
7801 | an expression changes."); | |
5ba2abeb | 7802 | set_cmd_completer (c, location_completer); |
c906108c | 7803 | |
c94fdfd0 EZ |
7804 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
7805 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
7806 | A watchpoint stops execution of your program whenever the value of\n\ |
7807 | an expression is read."); | |
5ba2abeb | 7808 | set_cmd_completer (c, location_completer); |
c906108c | 7809 | |
c94fdfd0 EZ |
7810 | c = add_com ("awatch", class_breakpoint, awatch_command, |
7811 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7812 | A watchpoint stops execution of your program whenever the value of\n\ |
7813 | an expression is either read or written."); | |
5ba2abeb | 7814 | set_cmd_completer (c, location_completer); |
c906108c SS |
7815 | |
7816 | add_info ("watchpoints", breakpoints_info, | |
7817 | "Synonym for ``info breakpoints''."); | |
7818 | ||
7819 | ||
7820 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7821 | (char *) &can_use_hw_watchpoints, |
7822 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7823 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7824 | such is available. (However, any hardware watchpoints that were\n\ | |
7825 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7826 | hardware.)", | |
c5aa993b | 7827 | &setlist); |
c906108c SS |
7828 | add_show_from_set (c, &showlist); |
7829 | ||
7830 | can_use_hw_watchpoints = 1; | |
7831 | } |