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c906108c SS |
1 | /* Everything about breakpoints, for GDB. |
2 | Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 | |
c5aa993b | 3 | Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "expression.h" | |
29 | #include "gdbcore.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "value.h" | |
32 | #include "command.h" | |
33 | #include "inferior.h" | |
34 | #include "gdbthread.h" | |
35 | #include "target.h" | |
36 | #include "language.h" | |
37 | #include "gdb_string.h" | |
38 | #include "demangle.h" | |
39 | #include "annotate.h" | |
40 | #include "symfile.h" | |
41 | #include "objfiles.h" | |
8b93c638 JM |
42 | #ifdef UI_OUT |
43 | #include "ui-out.h" | |
44 | #endif | |
c906108c | 45 | |
104c1213 JM |
46 | #include "gdb-events.h" |
47 | ||
c906108c SS |
48 | /* Prototypes for local functions. */ |
49 | ||
c2c6d25f JM |
50 | static void until_break_command_continuation (struct continuation_arg *arg); |
51 | ||
a14ed312 | 52 | static void catch_command_1 (char *, int, int); |
c906108c | 53 | |
a14ed312 | 54 | static void enable_delete_command (char *, int); |
c906108c | 55 | |
a14ed312 | 56 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 57 | |
a14ed312 | 58 | static void enable_once_command (char *, int); |
c906108c | 59 | |
a14ed312 | 60 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 61 | |
a14ed312 | 62 | static void disable_command (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void enable_command (char *, int); |
c906108c | 65 | |
a14ed312 | 66 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 67 | |
a14ed312 | 68 | static void ignore_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static int breakpoint_re_set_one (PTR); |
c906108c | 71 | |
a14ed312 | 72 | static void clear_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static void catch_command (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static void handle_gnu_4_16_catch_command (char *, int, int); |
c906108c | 77 | |
a14ed312 | 78 | static struct symtabs_and_lines get_catch_sals (int); |
c906108c | 79 | |
a14ed312 | 80 | static void watch_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 83 | |
a14ed312 KB |
84 | static void break_at_finish_command (char *, int); |
85 | static void break_at_finish_at_depth_command (char *, int); | |
7a292a7a | 86 | |
a14ed312 | 87 | void tbreak_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void tbreak_at_finish_command (char *, int); |
7a292a7a | 90 | |
a14ed312 | 91 | static void break_command_1 (char *, int, int); |
c906108c | 92 | |
a14ed312 | 93 | static void mention (struct breakpoint *); |
c906108c | 94 | |
a14ed312 | 95 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line); |
c906108c | 96 | |
a14ed312 | 97 | static void check_duplicates (CORE_ADDR, asection *); |
c906108c | 98 | |
a14ed312 | 99 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 100 | |
a14ed312 | 101 | static void breakpoints_info (char *, int); |
c906108c | 102 | |
a14ed312 | 103 | static void breakpoint_1 (int, int); |
c906108c | 104 | |
a14ed312 | 105 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 106 | |
a14ed312 | 107 | static int breakpoint_cond_eval (PTR); |
c906108c | 108 | |
a14ed312 | 109 | static void cleanup_executing_breakpoints (PTR); |
c906108c | 110 | |
a14ed312 | 111 | static void commands_command (char *, int); |
c906108c | 112 | |
a14ed312 | 113 | static void condition_command (char *, int); |
c906108c | 114 | |
a14ed312 | 115 | static int get_number_trailer (char **, int); |
c906108c | 116 | |
a14ed312 | 117 | void set_breakpoint_count (int); |
c906108c SS |
118 | |
119 | #if 0 | |
a14ed312 | 120 | static struct breakpoint *create_temp_exception_breakpoint (CORE_ADDR); |
c906108c SS |
121 | #endif |
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; | |
139 | int enable; | |
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 SS |
148 | |
149 | #ifdef GET_LONGJMP_TARGET | |
a14ed312 | 150 | static void create_longjmp_breakpoint (char *); |
c906108c SS |
151 | #endif |
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 | |
a14ed312 KB |
199 | static void create_exception_catchpoint |
200 | (int tempflag, char *cond_string, | |
201 | enum exception_event_kind ex_event, struct symtab_and_line *sal); | |
7a292a7a | 202 | |
a14ed312 KB |
203 | static void catch_exception_command_1 |
204 | (enum exception_event_kind ex_event, 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 | ||
a14ed312 | 212 | static void awatch_command (char *, int); |
c906108c | 213 | |
a14ed312 | 214 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c SS |
215 | |
216 | /* If FALSE, gdb will not use hardware support for watchpoints, even | |
217 | if such is available. */ | |
218 | static int can_use_hw_watchpoints; | |
219 | ||
a14ed312 | 220 | void _initialize_breakpoint (void); |
c906108c | 221 | |
a14ed312 | 222 | void set_breakpoint_count (int); |
c906108c | 223 | |
c5aa993b | 224 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 225 | |
c906108c | 226 | static int internal_breakpoint_number = -1; |
c906108c SS |
227 | |
228 | /* Are we executing breakpoint commands? */ | |
229 | static int executing_breakpoint_commands; | |
230 | ||
231 | /* Walk the following statement or block through all breakpoints. | |
232 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
233 | breakpoint. */ | |
234 | ||
5c44784c | 235 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 236 | |
5c44784c JM |
237 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
238 | for (B = breakpoint_chain; \ | |
239 | B ? (TMP=B->next, 1): 0; \ | |
240 | B = TMP) | |
c906108c SS |
241 | |
242 | /* True if SHIFT_INST_REGS defined, false otherwise. */ | |
243 | ||
244 | int must_shift_inst_regs = | |
245 | #if defined(SHIFT_INST_REGS) | |
246 | 1 | |
247 | #else | |
248 | 0 | |
249 | #endif | |
c5aa993b | 250 | ; |
c906108c SS |
251 | |
252 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ | |
253 | ||
254 | int show_breakpoint_hit_counts = 1; | |
255 | ||
256 | /* Chain of all breakpoints defined. */ | |
257 | ||
258 | struct breakpoint *breakpoint_chain; | |
259 | ||
260 | /* Number of last breakpoint made. */ | |
261 | ||
262 | int breakpoint_count; | |
263 | ||
c5aa993b JM |
264 | /* Pointer to current exception event record */ |
265 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
266 | |
267 | /* Indicator of whether exception catchpoints should be nuked | |
268 | between runs of a program */ | |
269 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 270 | |
c906108c SS |
271 | /* Indicator of when exception catchpoints set-up should be |
272 | reinitialized -- e.g. when program is re-run */ | |
273 | int exception_support_initialized = 0; | |
274 | ||
275 | /* This function returns a pointer to the string representation of the | |
276 | pathname of the dynamically-linked library that has just been | |
277 | loaded. | |
278 | ||
279 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
280 | or undefined results are guaranteed. | |
281 | ||
282 | This string's contents are only valid immediately after the | |
283 | inferior has stopped in the dynamic linker hook, and becomes | |
284 | invalid as soon as the inferior is continued. Clients should make | |
285 | a copy of this string if they wish to continue the inferior and | |
286 | then access the string. */ | |
287 | ||
288 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
289 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
290 | #endif | |
291 | ||
292 | /* This function returns a pointer to the string representation of the | |
293 | pathname of the dynamically-linked library that has just been | |
294 | unloaded. | |
295 | ||
296 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
297 | TRUE, or undefined results are guaranteed. | |
298 | ||
299 | This string's contents are only valid immediately after the | |
300 | inferior has stopped in the dynamic linker hook, and becomes | |
301 | invalid as soon as the inferior is continued. Clients should make | |
302 | a copy of this string if they wish to continue the inferior and | |
303 | then access the string. */ | |
304 | ||
305 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
306 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
307 | #endif | |
308 | ||
309 | /* This function is called by the "catch load" command. It allows the | |
310 | debugger to be notified by the dynamic linker when a specified | |
311 | library file (or any library file, if filename is NULL) is loaded. */ | |
312 | ||
313 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
314 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
315 | error ("catch of library loads not yet implemented on this platform") | |
316 | #endif | |
317 | ||
318 | /* This function is called by the "catch unload" command. It allows | |
319 | the debugger to be notified by the dynamic linker when a specified | |
320 | library file (or any library file, if filename is NULL) is | |
321 | unloaded. */ | |
322 | ||
323 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
324 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
325 | error ("catch of library unloads not yet implemented on this platform") | |
326 | #endif | |
327 | ||
328 | /* Set breakpoint count to NUM. */ | |
329 | ||
330 | void | |
fba45db2 | 331 | set_breakpoint_count (int num) |
c906108c SS |
332 | { |
333 | breakpoint_count = num; | |
334 | set_internalvar (lookup_internalvar ("bpnum"), | |
335 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
336 | } | |
337 | ||
338 | /* Used in run_command to zero the hit count when a new run starts. */ | |
339 | ||
340 | void | |
fba45db2 | 341 | clear_breakpoint_hit_counts (void) |
c906108c SS |
342 | { |
343 | struct breakpoint *b; | |
344 | ||
345 | ALL_BREAKPOINTS (b) | |
346 | b->hit_count = 0; | |
347 | } | |
348 | ||
349 | /* Default address, symtab and line to put a breakpoint at | |
350 | for "break" command with no arg. | |
351 | if default_breakpoint_valid is zero, the other three are | |
352 | not valid, and "break" with no arg is an error. | |
353 | ||
354 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
355 | ||
356 | int default_breakpoint_valid; | |
357 | CORE_ADDR default_breakpoint_address; | |
358 | struct symtab *default_breakpoint_symtab; | |
359 | int default_breakpoint_line; | |
360 | \f | |
361 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
362 | Advance *PP after the string and any trailing whitespace. | |
363 | ||
364 | Currently the string can either be a number or "$" followed by the name | |
365 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
366 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
367 | ||
368 | TRAILER is a character which can be found after the number; most | |
369 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 370 | static int |
fba45db2 | 371 | get_number_trailer (char **pp, int trailer) |
c906108c | 372 | { |
5c44784c | 373 | int retval = 0; /* default */ |
c906108c SS |
374 | char *p = *pp; |
375 | ||
376 | if (p == NULL) | |
377 | /* Empty line means refer to the last breakpoint. */ | |
378 | return breakpoint_count; | |
379 | else if (*p == '$') | |
380 | { | |
381 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 382 | to pass to lookup_internalvar(). */ |
c906108c SS |
383 | char *varname; |
384 | char *start = ++p; | |
385 | value_ptr val; | |
386 | ||
387 | while (isalnum (*p) || *p == '_') | |
388 | p++; | |
389 | varname = (char *) alloca (p - start + 1); | |
390 | strncpy (varname, start, p - start); | |
391 | varname[p - start] = '\0'; | |
392 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
393 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
394 | retval = (int) value_as_long (val); | |
395 | else | |
396 | { | |
397 | printf_filtered ("Convenience variable must have integer value.\n"); | |
398 | retval = 0; | |
399 | } | |
c906108c SS |
400 | } |
401 | else | |
402 | { | |
403 | if (*p == '-') | |
404 | ++p; | |
405 | while (*p >= '0' && *p <= '9') | |
406 | ++p; | |
407 | if (p == *pp) | |
408 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
409 | { |
410 | /* Skip non-numeric token */ | |
411 | while (*p && !isspace((int) *p)) | |
412 | ++p; | |
413 | /* Return zero, which caller must interpret as error. */ | |
414 | retval = 0; | |
415 | } | |
416 | else | |
417 | retval = atoi (*pp); | |
418 | } | |
419 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
420 | { | |
421 | /* Trailing junk: return 0 and let caller print error msg. */ | |
422 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
423 | ++p; | |
424 | retval = 0; | |
c906108c | 425 | } |
c906108c SS |
426 | while (isspace (*p)) |
427 | p++; | |
428 | *pp = p; | |
429 | return retval; | |
430 | } | |
5c44784c | 431 | |
11cf8741 | 432 | |
5c44784c JM |
433 | /* Like get_number_trailer, but don't allow a trailer. */ |
434 | int | |
fba45db2 | 435 | get_number (char **pp) |
5c44784c JM |
436 | { |
437 | return get_number_trailer (pp, '\0'); | |
438 | } | |
439 | ||
440 | /* Parse a number or a range. | |
441 | * A number will be of the form handled by get_number. | |
442 | * A range will be of the form <number1> - <number2>, and | |
443 | * will represent all the integers between number1 and number2, | |
444 | * inclusive. | |
445 | * | |
446 | * While processing a range, this fuction is called iteratively; | |
447 | * At each call it will return the next value in the range. | |
448 | * | |
449 | * At the beginning of parsing a range, the char pointer PP will | |
450 | * be advanced past <number1> and left pointing at the '-' token. | |
451 | * Subsequent calls will not advance the pointer until the range | |
452 | * is completed. The call that completes the range will advance | |
453 | * pointer PP past <number2>. | |
454 | */ | |
455 | ||
456 | int | |
fba45db2 | 457 | get_number_or_range (char **pp) |
5c44784c JM |
458 | { |
459 | static int last_retval, end_value; | |
460 | static char *end_ptr; | |
461 | static int in_range = 0; | |
462 | ||
463 | if (**pp != '-') | |
464 | { | |
465 | /* Default case: pp is pointing either to a solo number, | |
466 | or to the first number of a range. */ | |
467 | last_retval = get_number_trailer (pp, '-'); | |
468 | if (**pp == '-') | |
469 | { | |
470 | char **temp; | |
471 | ||
472 | /* This is the start of a range (<number1> - <number2>). | |
473 | Skip the '-', parse and remember the second number, | |
474 | and also remember the end of the final token. */ | |
475 | ||
476 | temp = &end_ptr; | |
477 | end_ptr = *pp + 1; | |
478 | while (isspace ((int) *end_ptr)) | |
479 | end_ptr++; /* skip white space */ | |
480 | end_value = get_number (temp); | |
481 | if (end_value < last_retval) | |
482 | { | |
483 | error ("inverted range"); | |
484 | } | |
485 | else if (end_value == last_retval) | |
486 | { | |
487 | /* degenerate range (number1 == number2). Advance the | |
488 | token pointer so that the range will be treated as a | |
489 | single number. */ | |
490 | *pp = end_ptr; | |
491 | } | |
492 | else | |
493 | in_range = 1; | |
494 | } | |
495 | } | |
496 | else if (! in_range) | |
497 | error ("negative value"); | |
498 | else | |
499 | { | |
500 | /* pp points to the '-' that betokens a range. All | |
501 | number-parsing has already been done. Return the next | |
502 | integer value (one greater than the saved previous value). | |
503 | Do not advance the token pointer 'pp' until the end of range | |
504 | is reached. */ | |
505 | ||
506 | if (++last_retval == end_value) | |
507 | { | |
508 | /* End of range reached; advance token pointer. */ | |
509 | *pp = end_ptr; | |
510 | in_range = 0; | |
511 | } | |
512 | } | |
513 | return last_retval; | |
514 | } | |
515 | ||
516 | ||
c906108c SS |
517 | \f |
518 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
519 | ||
520 | static void | |
fba45db2 | 521 | condition_command (char *arg, int from_tty) |
c906108c SS |
522 | { |
523 | register struct breakpoint *b; | |
524 | char *p; | |
525 | register int bnum; | |
526 | ||
527 | if (arg == 0) | |
528 | error_no_arg ("breakpoint number"); | |
529 | ||
530 | p = arg; | |
531 | bnum = get_number (&p); | |
5c44784c JM |
532 | if (bnum == 0) |
533 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
534 | |
535 | ALL_BREAKPOINTS (b) | |
536 | if (b->number == bnum) | |
c5aa993b JM |
537 | { |
538 | if (b->cond) | |
539 | { | |
540 | free ((PTR) b->cond); | |
541 | b->cond = 0; | |
542 | } | |
543 | if (b->cond_string != NULL) | |
544 | free ((PTR) b->cond_string); | |
c906108c | 545 | |
c5aa993b JM |
546 | if (*p == 0) |
547 | { | |
548 | b->cond = 0; | |
549 | b->cond_string = NULL; | |
550 | if (from_tty) | |
551 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
552 | } | |
553 | else | |
554 | { | |
555 | arg = p; | |
556 | /* I don't know if it matters whether this is the string the user | |
557 | typed in or the decompiled expression. */ | |
558 | b->cond_string = savestring (arg, strlen (arg)); | |
559 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); | |
560 | if (*arg) | |
561 | error ("Junk at end of expression"); | |
562 | } | |
563 | breakpoints_changed (); | |
564 | return; | |
565 | } | |
c906108c SS |
566 | |
567 | error ("No breakpoint number %d.", bnum); | |
568 | } | |
569 | ||
570 | /* ARGSUSED */ | |
571 | static void | |
fba45db2 | 572 | commands_command (char *arg, int from_tty) |
c906108c SS |
573 | { |
574 | register struct breakpoint *b; | |
575 | char *p; | |
576 | register int bnum; | |
577 | struct command_line *l; | |
578 | ||
579 | /* If we allowed this, we would have problems with when to | |
580 | free the storage, if we change the commands currently | |
581 | being read from. */ | |
582 | ||
583 | if (executing_breakpoint_commands) | |
584 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
585 | ||
586 | p = arg; | |
587 | bnum = get_number (&p); | |
5c44784c | 588 | |
c906108c SS |
589 | if (p && *p) |
590 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 591 | |
c906108c SS |
592 | ALL_BREAKPOINTS (b) |
593 | if (b->number == bnum) | |
c5aa993b JM |
594 | { |
595 | char tmpbuf[128]; | |
53a5351d JM |
596 | sprintf (tmpbuf, |
597 | "Type commands for when breakpoint %d is hit, one per line.", | |
598 | bnum); | |
c5aa993b JM |
599 | l = read_command_lines (tmpbuf, from_tty); |
600 | free_command_lines (&b->commands); | |
601 | b->commands = l; | |
602 | breakpoints_changed (); | |
603 | return; | |
604 | } | |
c906108c SS |
605 | error ("No breakpoint number %d.", bnum); |
606 | } | |
607 | \f | |
608 | /* Like target_read_memory() but if breakpoints are inserted, return | |
609 | the shadow contents instead of the breakpoints themselves. | |
610 | ||
611 | Read "memory data" from whatever target or inferior we have. | |
612 | Returns zero if successful, errno value if not. EIO is used | |
613 | for address out of bounds. If breakpoints are inserted, returns | |
614 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
615 | ||
616 | int | |
fba45db2 | 617 | read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
618 | { |
619 | int status; | |
620 | struct breakpoint *b; | |
621 | CORE_ADDR bp_addr = 0; | |
622 | int bp_size = 0; | |
623 | ||
624 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
625 | /* No breakpoints on this machine. */ | |
626 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 627 | |
c906108c | 628 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
629 | { |
630 | if (b->type == bp_none) | |
53a5351d JM |
631 | warning ("reading through apparently deleted breakpoint #%d?", |
632 | b->number); | |
c5aa993b JM |
633 | |
634 | /* memory breakpoint? */ | |
635 | if (b->type == bp_watchpoint | |
636 | || b->type == bp_hardware_watchpoint | |
637 | || b->type == bp_read_watchpoint | |
638 | || b->type == bp_access_watchpoint) | |
639 | continue; | |
640 | /* bp in memory? */ | |
641 | if (!b->inserted) | |
642 | continue; | |
643 | /* Addresses and length of the part of the breakpoint that | |
644 | we need to copy. */ | |
645 | /* XXXX The m68k, sh and h8300 have different local and remote | |
646 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
647 | correctly determine the breakpoints memory address and size | |
648 | for these targets. */ | |
649 | bp_addr = b->address; | |
650 | bp_size = 0; | |
651 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
652 | continue; | |
653 | if (bp_size == 0) | |
654 | /* bp isn't valid */ | |
655 | continue; | |
656 | if (bp_addr + bp_size <= memaddr) | |
657 | /* The breakpoint is entirely before the chunk of memory we | |
658 | are reading. */ | |
659 | continue; | |
660 | if (bp_addr >= memaddr + len) | |
661 | /* The breakpoint is entirely after the chunk of memory we are | |
662 | reading. */ | |
663 | continue; | |
664 | /* Copy the breakpoint from the shadow contents, and recurse for | |
665 | the things before and after. */ | |
c906108c | 666 | { |
c5aa993b JM |
667 | /* Offset within shadow_contents. */ |
668 | int bptoffset = 0; | |
c906108c | 669 | |
c5aa993b JM |
670 | if (bp_addr < memaddr) |
671 | { | |
672 | /* Only copy the second part of the breakpoint. */ | |
673 | bp_size -= memaddr - bp_addr; | |
674 | bptoffset = memaddr - bp_addr; | |
675 | bp_addr = memaddr; | |
676 | } | |
677 | ||
678 | if (bp_addr + bp_size > memaddr + len) | |
679 | { | |
680 | /* Only copy the first part of the breakpoint. */ | |
681 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
682 | } | |
683 | ||
684 | memcpy (myaddr + bp_addr - memaddr, | |
685 | b->shadow_contents + bptoffset, bp_size); | |
686 | ||
687 | if (bp_addr > memaddr) | |
688 | { | |
689 | /* Copy the section of memory before the breakpoint. */ | |
690 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
691 | if (status != 0) | |
692 | return status; | |
693 | } | |
694 | ||
695 | if (bp_addr + bp_size < memaddr + len) | |
696 | { | |
697 | /* Copy the section of memory after the breakpoint. */ | |
698 | status = read_memory_nobpt | |
699 | (bp_addr + bp_size, | |
700 | myaddr + bp_addr + bp_size - memaddr, | |
701 | memaddr + len - (bp_addr + bp_size)); | |
702 | if (status != 0) | |
703 | return status; | |
704 | } | |
705 | return 0; | |
c906108c | 706 | } |
c5aa993b | 707 | } |
c906108c SS |
708 | /* Nothing overlaps. Just call read_memory_noerr. */ |
709 | return target_read_memory (memaddr, myaddr, len); | |
710 | } | |
c906108c | 711 | \f |
c5aa993b | 712 | |
c906108c SS |
713 | /* insert_breakpoints is used when starting or continuing the program. |
714 | remove_breakpoints is used when the program stops. | |
715 | Both return zero if successful, | |
716 | or an `errno' value if could not write the inferior. */ | |
717 | ||
718 | int | |
fba45db2 | 719 | insert_breakpoints (void) |
c906108c SS |
720 | { |
721 | register struct breakpoint *b, *temp; | |
53a5351d | 722 | int return_val = 0; /* return success code. */ |
c906108c SS |
723 | int val = 0; |
724 | int disabled_breaks = 0; | |
725 | ||
726 | static char message1[] = "Error inserting catchpoint %d:\n"; | |
727 | static char message[sizeof (message1) + 30]; | |
728 | ||
729 | ||
730 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 731 | { |
c2c6d25f JM |
732 | if (b->enable == permanent) |
733 | /* Permanent breakpoints cannot be inserted or removed. */ | |
734 | continue; | |
735 | else if (b->type != bp_watchpoint | |
c5aa993b JM |
736 | && b->type != bp_hardware_watchpoint |
737 | && b->type != bp_read_watchpoint | |
738 | && b->type != bp_access_watchpoint | |
739 | && b->type != bp_catch_fork | |
740 | && b->type != bp_catch_vfork | |
741 | && b->type != bp_catch_exec | |
742 | && b->type != bp_catch_throw | |
743 | && b->type != bp_catch_catch | |
744 | && b->enable != disabled | |
745 | && b->enable != shlib_disabled | |
746 | && b->enable != call_disabled | |
747 | && !b->inserted | |
748 | && !b->duplicate) | |
749 | { | |
750 | if (b->type == bp_hardware_breakpoint) | |
751 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
752 | else | |
753 | { | |
754 | /* Check to see if breakpoint is in an overlay section; | |
755 | if so, we should set the breakpoint at the LMA address. | |
756 | Only if the section is currently mapped should we ALSO | |
757 | set a break at the VMA address. */ | |
758 | if (overlay_debugging && b->section && | |
759 | section_is_overlay (b->section)) | |
760 | { | |
761 | CORE_ADDR addr; | |
762 | ||
763 | addr = overlay_unmapped_address (b->address, b->section); | |
764 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
765 | /* This would be the time to check val, to see if the | |
766 | breakpoint write to the load address succeeded. | |
767 | However, this might be an ordinary occurrance, eg. if | |
768 | the unmapped overlay is in ROM. */ | |
769 | val = 0; /* in case unmapped address failed */ | |
770 | if (section_is_mapped (b->section)) | |
771 | val = target_insert_breakpoint (b->address, | |
772 | b->shadow_contents); | |
773 | } | |
774 | else /* ordinary (non-overlay) address */ | |
775 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
776 | } | |
777 | if (val) | |
778 | { | |
779 | /* Can't set the breakpoint. */ | |
c906108c | 780 | #if defined (DISABLE_UNSETTABLE_BREAK) |
c5aa993b JM |
781 | if (DISABLE_UNSETTABLE_BREAK (b->address)) |
782 | { | |
783 | /* See also: disable_breakpoints_in_shlibs. */ | |
784 | val = 0; | |
785 | b->enable = shlib_disabled; | |
786 | if (!disabled_breaks) | |
787 | { | |
788 | target_terminal_ours_for_output (); | |
53a5351d JM |
789 | warning ("Cannot insert breakpoint %d:", b->number); |
790 | warning ("Temporarily disabling shared library breakpoints:"); | |
c5aa993b JM |
791 | } |
792 | disabled_breaks = 1; | |
53a5351d | 793 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
794 | } |
795 | else | |
c906108c | 796 | #endif |
c5aa993b JM |
797 | { |
798 | target_terminal_ours_for_output (); | |
53a5351d | 799 | warning ("Cannot insert breakpoint %d:", b->number); |
c906108c | 800 | #ifdef ONE_PROCESS_WRITETEXT |
53a5351d | 801 | warning ("The same program may be running in another process."); |
c906108c | 802 | #endif |
53a5351d | 803 | memory_error (val, b->address); /* which bombs us out */ |
c5aa993b JM |
804 | } |
805 | } | |
806 | else | |
807 | b->inserted = 1; | |
53a5351d JM |
808 | |
809 | if (val) | |
810 | return_val = val; /* remember failure */ | |
c5aa993b | 811 | } |
c906108c | 812 | else if (ep_is_exception_catchpoint (b) |
c5aa993b JM |
813 | && b->enable != disabled |
814 | && b->enable != shlib_disabled | |
815 | && b->enable != call_disabled | |
816 | && !b->inserted | |
817 | && !b->duplicate) | |
c906108c SS |
818 | |
819 | { | |
c5aa993b JM |
820 | /* If we get here, we must have a callback mechanism for exception |
821 | events -- with g++ style embedded label support, we insert | |
822 | ordinary breakpoints and not catchpoints. */ | |
53a5351d JM |
823 | /* Format possible error message */ |
824 | sprintf (message, message1, b->number); | |
c5aa993b JM |
825 | |
826 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
827 | if (val) | |
828 | { | |
829 | /* Couldn't set breakpoint for some reason */ | |
830 | target_terminal_ours_for_output (); | |
53a5351d JM |
831 | warning ("Cannot insert catchpoint %d; disabling it.", |
832 | b->number); | |
c5aa993b JM |
833 | b->enable = disabled; |
834 | } | |
835 | else | |
836 | { | |
837 | /* Bp set, now make sure callbacks are enabled */ | |
c906108c | 838 | int val; |
c5aa993b | 839 | args_for_catchpoint_enable args; |
53a5351d JM |
840 | args.kind = b->type == bp_catch_catch ? |
841 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
842 | args.enable = 1; |
843 | val = catch_errors (cover_target_enable_exception_callback, | |
844 | &args, | |
845 | message, RETURN_MASK_ALL); | |
846 | if (val != 0 && val != -1) | |
847 | { | |
848 | b->inserted = 1; | |
849 | } | |
c5aa993b | 850 | /* Check if something went wrong; val == 0 can be ignored */ |
c906108c SS |
851 | if (val == -1) |
852 | { | |
c5aa993b | 853 | /* something went wrong */ |
c906108c | 854 | target_terminal_ours_for_output (); |
53a5351d JM |
855 | warning ("Cannot insert catchpoint %d; disabling it.", |
856 | b->number); | |
c906108c SS |
857 | b->enable = disabled; |
858 | } | |
c5aa993b | 859 | } |
53a5351d JM |
860 | |
861 | if (val) | |
862 | return_val = val; /* remember failure */ | |
c906108c SS |
863 | } |
864 | ||
c5aa993b JM |
865 | else if ((b->type == bp_hardware_watchpoint || |
866 | b->type == bp_read_watchpoint || | |
867 | b->type == bp_access_watchpoint) | |
868 | && b->enable == enabled | |
c6902688 | 869 | && b->disposition != del_at_next_stop |
c5aa993b JM |
870 | && !b->inserted |
871 | && !b->duplicate) | |
872 | { | |
873 | struct frame_info *saved_frame; | |
874 | int saved_level, within_current_scope; | |
875 | value_ptr mark = value_mark (); | |
876 | value_ptr v; | |
877 | ||
878 | /* Save the current frame and level so we can restore it after | |
879 | evaluating the watchpoint expression on its own frame. */ | |
880 | saved_frame = selected_frame; | |
881 | saved_level = selected_frame_level; | |
882 | ||
883 | /* Determine if the watchpoint is within scope. */ | |
884 | if (b->exp_valid_block == NULL) | |
885 | within_current_scope = 1; | |
886 | else | |
887 | { | |
888 | struct frame_info *fi; | |
889 | ||
890 | /* There might be no current frame at this moment if we are | |
891 | resuming from a step over a breakpoint. | |
892 | Set up current frame before trying to find the watchpoint | |
893 | frame. */ | |
894 | get_current_frame (); | |
895 | fi = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
896 | within_current_scope = (fi != NULL); | |
897 | if (within_current_scope) | |
898 | select_frame (fi, -1); | |
899 | } | |
900 | ||
901 | if (within_current_scope) | |
902 | { | |
903 | /* Evaluate the expression and cut the chain of values | |
5c44784c JM |
904 | produced off from the value chain. |
905 | ||
906 | Make sure the value returned isn't lazy; we use | |
907 | laziness to determine what memory GDB actually needed | |
908 | in order to compute the value of the expression. */ | |
c5aa993b | 909 | v = evaluate_expression (b->exp); |
5c44784c | 910 | VALUE_CONTENTS(v); |
c5aa993b JM |
911 | value_release_to_mark (mark); |
912 | ||
913 | b->val_chain = v; | |
914 | b->inserted = 1; | |
915 | ||
916 | /* Look at each value on the value chain. */ | |
917 | for (; v; v = v->next) | |
918 | { | |
5c44784c JM |
919 | /* If it's a memory location, and GDB actually needed |
920 | its contents to evaluate the expression, then we | |
921 | must watch it. */ | |
922 | if (VALUE_LVAL (v) == lval_memory | |
923 | && ! VALUE_LAZY (v)) | |
c5aa993b | 924 | { |
2e70b7b9 MS |
925 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
926 | ||
927 | /* We only watch structs and arrays if user asked | |
928 | for it explicitly, never if they just happen to | |
929 | appear in the middle of some value chain. */ | |
930 | if (v == b->val_chain | |
931 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
932 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
c5aa993b | 933 | { |
2e70b7b9 MS |
934 | CORE_ADDR addr; |
935 | int len, type; | |
936 | ||
937 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
938 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
939 | type = hw_write; | |
940 | if (b->type == bp_read_watchpoint) | |
941 | type = hw_read; | |
942 | else if (b->type == bp_access_watchpoint) | |
943 | type = hw_access; | |
944 | ||
945 | val = target_insert_watchpoint (addr, len, type); | |
946 | if (val == -1) | |
947 | { | |
948 | /* Don't exit the loop, try to insert | |
949 | every value on the value chain. That's | |
950 | because we will be removing all the | |
951 | watches below, and removing a | |
952 | watchpoint we didn't insert could have | |
953 | adverse effects. */ | |
954 | b->inserted = 0; | |
955 | } | |
956 | val = 0; | |
c5aa993b | 957 | } |
c5aa993b JM |
958 | } |
959 | } | |
960 | /* Failure to insert a watchpoint on any memory value in the | |
961 | value chain brings us here. */ | |
962 | if (!b->inserted) | |
53a5351d JM |
963 | { |
964 | remove_breakpoint (b, mark_uninserted); | |
965 | warning ("Could not insert hardware watchpoint %d.", | |
966 | b->number); | |
967 | val = -1; | |
968 | } | |
c5aa993b JM |
969 | } |
970 | else | |
971 | { | |
c6902688 | 972 | printf_filtered ("Hardware watchpoint %d deleted ", b->number); |
53a5351d JM |
973 | printf_filtered ("because the program has left the block \n"); |
974 | printf_filtered ("in which its expression is valid.\n"); | |
c5aa993b JM |
975 | if (b->related_breakpoint) |
976 | b->related_breakpoint->disposition = del_at_next_stop; | |
977 | b->disposition = del_at_next_stop; | |
978 | } | |
c906108c | 979 | |
c5aa993b JM |
980 | /* Restore the frame and level. */ |
981 | if ((saved_frame != selected_frame) || | |
982 | (saved_level != selected_frame_level)) | |
c6902688 | 983 | select_frame (saved_frame, saved_level); |
53a5351d JM |
984 | |
985 | if (val) | |
986 | return_val = val; /* remember failure */ | |
c5aa993b JM |
987 | } |
988 | else if ((b->type == bp_catch_fork | |
989 | || b->type == bp_catch_vfork | |
990 | || b->type == bp_catch_exec) | |
991 | && b->enable == enabled | |
992 | && !b->inserted | |
993 | && !b->duplicate) | |
994 | { | |
995 | val = -1; | |
996 | switch (b->type) | |
997 | { | |
998 | case bp_catch_fork: | |
999 | val = target_insert_fork_catchpoint (inferior_pid); | |
1000 | break; | |
1001 | case bp_catch_vfork: | |
1002 | val = target_insert_vfork_catchpoint (inferior_pid); | |
1003 | break; | |
1004 | case bp_catch_exec: | |
1005 | val = target_insert_exec_catchpoint (inferior_pid); | |
1006 | break; | |
1007 | default: | |
53a5351d | 1008 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
c5aa993b JM |
1009 | break; |
1010 | } | |
1011 | if (val < 0) | |
1012 | { | |
1013 | target_terminal_ours_for_output (); | |
53a5351d | 1014 | warning ("Cannot insert catchpoint %d.", b->number); |
c5aa993b JM |
1015 | } |
1016 | else | |
1017 | b->inserted = 1; | |
53a5351d JM |
1018 | |
1019 | if (val) | |
1020 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1021 | } |
1022 | } | |
c906108c | 1023 | |
53a5351d | 1024 | return return_val; |
c906108c SS |
1025 | } |
1026 | ||
1027 | ||
1028 | int | |
fba45db2 | 1029 | remove_breakpoints (void) |
c906108c SS |
1030 | { |
1031 | register struct breakpoint *b; | |
1032 | int val; | |
1033 | ||
1034 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
1035 | { |
1036 | if (b->inserted) | |
1037 | { | |
1038 | val = remove_breakpoint (b, mark_uninserted); | |
1039 | if (val != 0) | |
1040 | return val; | |
1041 | } | |
1042 | } | |
c906108c SS |
1043 | return 0; |
1044 | } | |
1045 | ||
692590c1 | 1046 | int |
80ce1ecb | 1047 | remove_hw_watchpoints (void) |
692590c1 MS |
1048 | { |
1049 | register struct breakpoint *b; | |
1050 | int val; | |
1051 | ||
1052 | ALL_BREAKPOINTS (b) | |
1053 | { | |
1054 | if (b->inserted | |
1055 | && (b->type == bp_hardware_watchpoint | |
1056 | || b->type == bp_read_watchpoint | |
1057 | || b->type == bp_access_watchpoint)) | |
1058 | { | |
1059 | val = remove_breakpoint (b, mark_uninserted); | |
1060 | if (val != 0) | |
1061 | return val; | |
1062 | } | |
1063 | } | |
1064 | return 0; | |
1065 | } | |
1066 | ||
c906108c | 1067 | int |
fba45db2 | 1068 | reattach_breakpoints (int pid) |
c906108c SS |
1069 | { |
1070 | register struct breakpoint *b; | |
1071 | int val; | |
c5aa993b | 1072 | int saved_inferior_pid = inferior_pid; |
c906108c | 1073 | |
53a5351d JM |
1074 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1075 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 1076 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1077 | { |
1078 | if (b->inserted) | |
1079 | { | |
1080 | remove_breakpoint (b, mark_inserted); | |
1081 | if (b->type == bp_hardware_breakpoint) | |
1082 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
1083 | else | |
1084 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
1085 | if (val != 0) | |
1086 | { | |
1087 | inferior_pid = saved_inferior_pid; | |
1088 | return val; | |
1089 | } | |
1090 | } | |
1091 | } | |
c906108c SS |
1092 | inferior_pid = saved_inferior_pid; |
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | void | |
fba45db2 | 1097 | update_breakpoints_after_exec (void) |
c906108c | 1098 | { |
c5aa993b JM |
1099 | struct breakpoint *b; |
1100 | struct breakpoint *temp; | |
c906108c SS |
1101 | |
1102 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1103 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1104 | shadow is NOT valid after an exec()! */ | |
1105 | mark_breakpoints_out (); | |
1106 | ||
1107 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1108 | { |
1109 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1110 | if (b->type == bp_shlib_event) | |
1111 | { | |
1112 | delete_breakpoint (b); | |
1113 | continue; | |
1114 | } | |
c906108c | 1115 | |
c4093a6a JM |
1116 | /* Thread event breakpoints must be set anew after an exec(). */ |
1117 | if (b->type == bp_thread_event) | |
1118 | { | |
1119 | delete_breakpoint (b); | |
1120 | continue; | |
1121 | } | |
1122 | ||
c5aa993b JM |
1123 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1124 | if (b->type == bp_step_resume) | |
1125 | { | |
1126 | delete_breakpoint (b); | |
1127 | continue; | |
1128 | } | |
1129 | ||
1130 | /* Ditto the sigtramp handler breakpoints. */ | |
1131 | if (b->type == bp_through_sigtramp) | |
1132 | { | |
1133 | delete_breakpoint (b); | |
1134 | continue; | |
1135 | } | |
1136 | ||
1137 | /* Ditto the exception-handling catchpoints. */ | |
1138 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1139 | { | |
1140 | delete_breakpoint (b); | |
1141 | continue; | |
1142 | } | |
1143 | ||
1144 | /* Don't delete an exec catchpoint, because else the inferior | |
1145 | won't stop when it ought! | |
1146 | ||
1147 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1148 | on this target, we may not be able to stop when the vfork is |
1149 | seen, but only when the subsequent exec is seen. (And because | |
1150 | deleting fork catchpoints here but not vfork catchpoints will | |
1151 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1152 | |
1153 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1154 | target address field, if any, is sufficient to have it be reset | |
1155 | automagically. Certainly on HP-UX that's true. */ | |
1156 | if ((b->type == bp_catch_exec) || | |
1157 | (b->type == bp_catch_vfork) || | |
1158 | (b->type == bp_catch_fork)) | |
1159 | { | |
1160 | b->address = (CORE_ADDR) NULL; | |
1161 | continue; | |
1162 | } | |
1163 | ||
1164 | /* bp_finish is a special case. The only way we ought to be able | |
1165 | to see one of these when an exec() has happened, is if the user | |
1166 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1167 | carries them to the call-site of the current callee, by setting | |
1168 | a temporary bp there and resuming. But in this case, the finish | |
1169 | will carry them entirely through the vfork & exec. | |
1170 | ||
1171 | We don't want to allow a bp_finish to remain inserted now. But | |
1172 | we can't safely delete it, 'cause finish_command has a handle to | |
1173 | the bp on a bpstat, and will later want to delete it. There's a | |
1174 | chance (and I've seen it happen) that if we delete the bp_finish | |
1175 | here, that its storage will get reused by the time finish_command | |
1176 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1177 | We really must allow finish_command to delete a bp_finish. | |
1178 | ||
53a5351d JM |
1179 | In the absense of a general solution for the "how do we know |
1180 | it's safe to delete something others may have handles to?" | |
1181 | problem, what we'll do here is just uninsert the bp_finish, and | |
1182 | let finish_command delete it. | |
1183 | ||
1184 | (We know the bp_finish is "doomed" in the sense that it's | |
1185 | momentary, and will be deleted as soon as finish_command sees | |
1186 | the inferior stopped. So it doesn't matter that the bp's | |
1187 | address is probably bogus in the new a.out, unlike e.g., the | |
1188 | solib breakpoints.) */ | |
c5aa993b | 1189 | |
c5aa993b JM |
1190 | if (b->type == bp_finish) |
1191 | { | |
1192 | continue; | |
1193 | } | |
1194 | ||
1195 | /* Without a symbolic address, we have little hope of the | |
1196 | pre-exec() address meaning the same thing in the post-exec() | |
1197 | a.out. */ | |
1198 | if (b->addr_string == NULL) | |
1199 | { | |
1200 | delete_breakpoint (b); | |
1201 | continue; | |
1202 | } | |
1203 | ||
1204 | /* If this breakpoint has survived the above battery of checks, then | |
1205 | it must have a symbolic address. Be sure that it gets reevaluated | |
1206 | to a target address, rather than reusing the old evaluation. */ | |
1207 | b->address = (CORE_ADDR) NULL; | |
1208 | } | |
c906108c SS |
1209 | } |
1210 | ||
1211 | int | |
fba45db2 | 1212 | detach_breakpoints (int pid) |
c906108c SS |
1213 | { |
1214 | register struct breakpoint *b; | |
1215 | int val; | |
c5aa993b JM |
1216 | int saved_inferior_pid = inferior_pid; |
1217 | ||
c906108c SS |
1218 | if (pid == inferior_pid) |
1219 | error ("Cannot detach breakpoints of inferior_pid"); | |
c5aa993b | 1220 | |
53a5351d JM |
1221 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1222 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 1223 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1224 | { |
1225 | if (b->inserted) | |
1226 | { | |
1227 | val = remove_breakpoint (b, mark_inserted); | |
1228 | if (val != 0) | |
1229 | { | |
1230 | inferior_pid = saved_inferior_pid; | |
1231 | return val; | |
1232 | } | |
1233 | } | |
1234 | } | |
c906108c SS |
1235 | inferior_pid = saved_inferior_pid; |
1236 | return 0; | |
1237 | } | |
1238 | ||
1239 | static int | |
fba45db2 | 1240 | remove_breakpoint (struct breakpoint *b, insertion_state_t is) |
c906108c SS |
1241 | { |
1242 | int val; | |
c5aa993b | 1243 | |
c2c6d25f JM |
1244 | if (b->enable == permanent) |
1245 | /* Permanent breakpoints cannot be inserted or removed. */ | |
1246 | return 0; | |
1247 | ||
c906108c | 1248 | if (b->type == bp_none) |
53a5351d JM |
1249 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
1250 | b->number); | |
c906108c SS |
1251 | |
1252 | if (b->type != bp_watchpoint | |
1253 | && b->type != bp_hardware_watchpoint | |
1254 | && b->type != bp_read_watchpoint | |
1255 | && b->type != bp_access_watchpoint | |
1256 | && b->type != bp_catch_fork | |
1257 | && b->type != bp_catch_vfork | |
1258 | && b->type != bp_catch_exec | |
1259 | && b->type != bp_catch_catch | |
1260 | && b->type != bp_catch_throw) | |
c906108c SS |
1261 | { |
1262 | if (b->type == bp_hardware_breakpoint) | |
c5aa993b | 1263 | val = target_remove_hw_breakpoint (b->address, b->shadow_contents); |
c906108c SS |
1264 | else |
1265 | { | |
1266 | /* Check to see if breakpoint is in an overlay section; | |
1267 | if so, we should remove the breakpoint at the LMA address. | |
1268 | If that is not equal to the raw address, then we should | |
1269 | presumable remove the breakpoint there as well. */ | |
c5aa993b | 1270 | if (overlay_debugging && b->section && |
c906108c SS |
1271 | section_is_overlay (b->section)) |
1272 | { | |
1273 | CORE_ADDR addr; | |
1274 | ||
1275 | addr = overlay_unmapped_address (b->address, b->section); | |
1276 | val = target_remove_breakpoint (addr, b->shadow_contents); | |
1277 | /* This would be the time to check val, to see if the | |
c5aa993b JM |
1278 | shadow breakpoint write to the load address succeeded. |
1279 | However, this might be an ordinary occurrance, eg. if | |
1280 | the unmapped overlay is in ROM. */ | |
1281 | val = 0; /* in case unmapped address failed */ | |
c906108c | 1282 | if (section_is_mapped (b->section)) |
c5aa993b | 1283 | val = target_remove_breakpoint (b->address, |
c906108c SS |
1284 | b->shadow_contents); |
1285 | } | |
c5aa993b JM |
1286 | else /* ordinary (non-overlay) address */ |
1287 | val = target_remove_breakpoint (b->address, b->shadow_contents); | |
c906108c SS |
1288 | } |
1289 | if (val) | |
1290 | return val; | |
1291 | b->inserted = (is == mark_inserted); | |
1292 | } | |
1293 | else if ((b->type == bp_hardware_watchpoint || | |
c5aa993b JM |
1294 | b->type == bp_read_watchpoint || |
1295 | b->type == bp_access_watchpoint) | |
c906108c | 1296 | && b->enable == enabled |
c5aa993b | 1297 | && !b->duplicate) |
c906108c SS |
1298 | { |
1299 | value_ptr v, n; | |
c5aa993b | 1300 | |
c906108c SS |
1301 | b->inserted = (is == mark_inserted); |
1302 | /* Walk down the saved value chain. */ | |
1303 | for (v = b->val_chain; v; v = v->next) | |
1304 | { | |
1305 | /* For each memory reference remove the watchpoint | |
1306 | at that address. */ | |
5c44784c JM |
1307 | if (VALUE_LVAL (v) == lval_memory |
1308 | && ! VALUE_LAZY (v)) | |
c906108c | 1309 | { |
2e70b7b9 MS |
1310 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1311 | ||
1312 | if (v == b->val_chain | |
1313 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
1314 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1315 | { | |
1316 | CORE_ADDR addr; | |
1317 | int len, type; | |
1318 | ||
1319 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1320 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1321 | type = hw_write; | |
1322 | if (b->type == bp_read_watchpoint) | |
1323 | type = hw_read; | |
1324 | else if (b->type == bp_access_watchpoint) | |
1325 | type = hw_access; | |
1326 | ||
1327 | val = target_remove_watchpoint (addr, len, type); | |
1328 | if (val == -1) | |
1329 | b->inserted = 1; | |
1330 | val = 0; | |
1331 | } | |
c906108c SS |
1332 | } |
1333 | } | |
1334 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
1335 | if ((is == mark_uninserted) && (b->inserted)) | |
53a5351d | 1336 | warning ("Could not remove hardware watchpoint %d.", |
c906108c | 1337 | b->number); |
c5aa993b | 1338 | |
c906108c | 1339 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1340 | the next time the watchpoint is inserted. */ |
c906108c SS |
1341 | for (v = b->val_chain; v; v = n) |
1342 | { | |
1343 | n = v->next; | |
1344 | value_free (v); | |
1345 | } | |
1346 | b->val_chain = NULL; | |
1347 | } | |
1348 | else if ((b->type == bp_catch_fork || | |
c5aa993b JM |
1349 | b->type == bp_catch_vfork || |
1350 | b->type == bp_catch_exec) | |
c906108c | 1351 | && b->enable == enabled |
c5aa993b | 1352 | && !b->duplicate) |
c906108c SS |
1353 | { |
1354 | val = -1; | |
1355 | switch (b->type) | |
c5aa993b JM |
1356 | { |
1357 | case bp_catch_fork: | |
1358 | val = target_remove_fork_catchpoint (inferior_pid); | |
1359 | break; | |
1360 | case bp_catch_vfork: | |
1361 | val = target_remove_vfork_catchpoint (inferior_pid); | |
1362 | break; | |
1363 | case bp_catch_exec: | |
1364 | val = target_remove_exec_catchpoint (inferior_pid); | |
1365 | break; | |
ac9a91a7 | 1366 | default: |
53a5351d | 1367 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1368 | break; |
c5aa993b | 1369 | } |
c906108c SS |
1370 | if (val) |
1371 | return val; | |
1372 | b->inserted = (is == mark_inserted); | |
1373 | } | |
1374 | else if ((b->type == bp_catch_catch || | |
c5aa993b JM |
1375 | b->type == bp_catch_throw) |
1376 | && b->enable == enabled | |
1377 | && !b->duplicate) | |
c906108c SS |
1378 | { |
1379 | ||
c5aa993b | 1380 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1381 | if (val) |
c5aa993b | 1382 | return val; |
c906108c SS |
1383 | b->inserted = (is == mark_inserted); |
1384 | } | |
1385 | else if (ep_is_exception_catchpoint (b) | |
c5aa993b JM |
1386 | && b->inserted /* sometimes previous insert doesn't happen */ |
1387 | && b->enable == enabled | |
1388 | && !b->duplicate) | |
c906108c SS |
1389 | { |
1390 | ||
c5aa993b | 1391 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1392 | if (val) |
c5aa993b JM |
1393 | return val; |
1394 | ||
c906108c SS |
1395 | b->inserted = (is == mark_inserted); |
1396 | } | |
1397 | ||
1398 | return 0; | |
1399 | } | |
1400 | ||
1401 | /* Clear the "inserted" flag in all breakpoints. */ | |
1402 | ||
1403 | void | |
fba45db2 | 1404 | mark_breakpoints_out (void) |
c906108c SS |
1405 | { |
1406 | register struct breakpoint *b; | |
1407 | ||
1408 | ALL_BREAKPOINTS (b) | |
1409 | b->inserted = 0; | |
1410 | } | |
1411 | ||
53a5351d JM |
1412 | /* Clear the "inserted" flag in all breakpoints and delete any |
1413 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1414 | |
1415 | Plus other such housekeeping that has to be done for breakpoints | |
1416 | between runs. | |
1417 | ||
53a5351d JM |
1418 | Note: this function gets called at the end of a run (by |
1419 | generic_mourn_inferior) and when a run begins (by | |
1420 | init_wait_for_inferior). */ | |
c906108c SS |
1421 | |
1422 | ||
1423 | ||
1424 | void | |
fba45db2 | 1425 | breakpoint_init_inferior (enum inf_context context) |
c906108c SS |
1426 | { |
1427 | register struct breakpoint *b, *temp; | |
1428 | static int warning_needed = 0; | |
1429 | ||
1430 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1431 | { |
1432 | b->inserted = 0; | |
c906108c | 1433 | |
c5aa993b JM |
1434 | switch (b->type) |
1435 | { | |
1436 | case bp_call_dummy: | |
1437 | case bp_watchpoint_scope: | |
c906108c | 1438 | |
c5aa993b JM |
1439 | /* If the call dummy breakpoint is at the entry point it will |
1440 | cause problems when the inferior is rerun, so we better | |
1441 | get rid of it. | |
c906108c | 1442 | |
c5aa993b JM |
1443 | Also get rid of scope breakpoints. */ |
1444 | delete_breakpoint (b); | |
1445 | break; | |
c906108c | 1446 | |
c5aa993b JM |
1447 | case bp_watchpoint: |
1448 | case bp_hardware_watchpoint: | |
1449 | case bp_read_watchpoint: | |
1450 | case bp_access_watchpoint: | |
c906108c | 1451 | |
c5aa993b JM |
1452 | /* Likewise for watchpoints on local expressions. */ |
1453 | if (b->exp_valid_block != NULL) | |
1454 | delete_breakpoint (b); | |
1455 | break; | |
1456 | default: | |
1457 | /* Likewise for exception catchpoints in dynamic-linked | |
1458 | executables where required */ | |
1459 | if (ep_is_exception_catchpoint (b) && | |
1460 | exception_catchpoints_are_fragile) | |
1461 | { | |
1462 | warning_needed = 1; | |
c906108c | 1463 | delete_breakpoint (b); |
c5aa993b JM |
1464 | } |
1465 | break; | |
1466 | } | |
1467 | } | |
c906108c SS |
1468 | |
1469 | if (exception_catchpoints_are_fragile) | |
1470 | exception_support_initialized = 0; | |
1471 | ||
c5aa993b | 1472 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1473 | if (warning_needed && (context != inf_exited)) |
1474 | { | |
53a5351d JM |
1475 | warning ("Exception catchpoints from last run were deleted."); |
1476 | warning ("You must reinsert them explicitly."); | |
c906108c | 1477 | warning_needed = 0; |
c5aa993b | 1478 | } |
c906108c SS |
1479 | } |
1480 | ||
c2c6d25f JM |
1481 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1482 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1483 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1484 | permanent breakpoint. | |
1485 | - When continuing from a location with an ordinary breakpoint, we | |
1486 | actually single step once before calling insert_breakpoints. | |
1487 | - When continuing from a localion with a permanent breakpoint, we | |
1488 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1489 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1490 | |
c2c6d25f | 1491 | enum breakpoint_here |
fba45db2 | 1492 | breakpoint_here_p (CORE_ADDR pc) |
c906108c SS |
1493 | { |
1494 | register struct breakpoint *b; | |
c2c6d25f | 1495 | int any_breakpoint_here = 0; |
c906108c SS |
1496 | |
1497 | ALL_BREAKPOINTS (b) | |
c2c6d25f JM |
1498 | if ((b->enable == enabled |
1499 | || b->enable == permanent) | |
c906108c | 1500 | && b->address == pc) /* bp is enabled and matches pc */ |
c2c6d25f JM |
1501 | { |
1502 | if (overlay_debugging && | |
1503 | section_is_overlay (b->section) && | |
1504 | !section_is_mapped (b->section)) | |
1505 | continue; /* unmapped overlay -- can't be a match */ | |
1506 | else if (b->enable == permanent) | |
1507 | return permanent_breakpoint_here; | |
1508 | else | |
1509 | any_breakpoint_here = 1; | |
1510 | } | |
c906108c | 1511 | |
c2c6d25f | 1512 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1513 | } |
1514 | ||
c2c6d25f | 1515 | |
53a5351d JM |
1516 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1517 | but it only returns true if there is actually a breakpoint inserted | |
1518 | at PC. */ | |
c906108c SS |
1519 | |
1520 | int | |
fba45db2 | 1521 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c SS |
1522 | { |
1523 | register struct breakpoint *b; | |
1524 | ||
1525 | ALL_BREAKPOINTS (b) | |
1526 | if (b->inserted | |
1527 | && b->address == pc) /* bp is inserted and matches pc */ | |
c5aa993b JM |
1528 | { |
1529 | if (overlay_debugging && | |
1530 | section_is_overlay (b->section) && | |
1531 | !section_is_mapped (b->section)) | |
1532 | continue; /* unmapped overlay -- can't be a match */ | |
1533 | else | |
1534 | return 1; | |
1535 | } | |
c906108c SS |
1536 | |
1537 | return 0; | |
1538 | } | |
1539 | ||
53a5351d JM |
1540 | /* Return nonzero if FRAME is a dummy frame. We can't use |
1541 | PC_IN_CALL_DUMMY because figuring out the saved SP would take too | |
1542 | much time, at least using get_saved_register on the 68k. This | |
1543 | means that for this function to work right a port must use the | |
1544 | bp_call_dummy breakpoint. */ | |
c906108c SS |
1545 | |
1546 | int | |
fba45db2 | 1547 | frame_in_dummy (struct frame_info *frame) |
c906108c | 1548 | { |
c906108c SS |
1549 | struct breakpoint *b; |
1550 | ||
c5aa993b | 1551 | if (!CALL_DUMMY_P) |
7a292a7a SS |
1552 | return 0; |
1553 | ||
1554 | if (USE_GENERIC_DUMMY_FRAMES) | |
1555 | return generic_pc_in_call_dummy (frame->pc, frame->frame, frame->frame); | |
c5aa993b | 1556 | |
c906108c | 1557 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1558 | { |
1559 | if (b->type == bp_call_dummy | |
1560 | && b->frame == frame->frame | |
1561 | /* We need to check the PC as well as the frame on the sparc, | |
1562 | for signals.exp in the testsuite. */ | |
1563 | && (frame->pc | |
1564 | >= (b->address | |
1565 | - SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE)) | |
1566 | && frame->pc <= b->address) | |
1567 | return 1; | |
1568 | } | |
c906108c SS |
1569 | return 0; |
1570 | } | |
1571 | ||
2c8f79c2 MS |
1572 | /* breakpoint_thread_match (PC, PID) returns true if the breakpoint at |
1573 | PC is valid for process/thread PID. */ | |
c906108c SS |
1574 | |
1575 | int | |
fba45db2 | 1576 | breakpoint_thread_match (CORE_ADDR pc, int pid) |
c906108c SS |
1577 | { |
1578 | struct breakpoint *b; | |
1579 | int thread; | |
1580 | ||
1581 | thread = pid_to_thread_id (pid); | |
1582 | ||
1583 | ALL_BREAKPOINTS (b) | |
1584 | if (b->enable != disabled | |
1585 | && b->enable != shlib_disabled | |
1586 | && b->enable != call_disabled | |
1587 | && b->address == pc | |
1588 | && (b->thread == -1 || b->thread == thread)) | |
c5aa993b JM |
1589 | { |
1590 | if (overlay_debugging && | |
1591 | section_is_overlay (b->section) && | |
1592 | !section_is_mapped (b->section)) | |
1593 | continue; /* unmapped overlay -- can't be a match */ | |
1594 | else | |
1595 | return 1; | |
1596 | } | |
c906108c SS |
1597 | |
1598 | return 0; | |
1599 | } | |
c906108c | 1600 | \f |
c5aa993b | 1601 | |
c906108c SS |
1602 | /* bpstat stuff. External routines' interfaces are documented |
1603 | in breakpoint.h. */ | |
1604 | ||
1605 | int | |
fba45db2 | 1606 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1607 | { |
1608 | return | |
1609 | (ep->type == bp_catch_load) | |
1610 | || (ep->type == bp_catch_unload) | |
1611 | || (ep->type == bp_catch_fork) | |
1612 | || (ep->type == bp_catch_vfork) | |
1613 | || (ep->type == bp_catch_exec) | |
1614 | || (ep->type == bp_catch_catch) | |
1615 | || (ep->type == bp_catch_throw) | |
1616 | ||
1617 | ||
c5aa993b | 1618 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c SS |
1619 | ; |
1620 | } | |
c5aa993b | 1621 | |
c906108c | 1622 | int |
fba45db2 | 1623 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1624 | { |
1625 | return | |
1626 | (ep->type == bp_catch_load) | |
1627 | || (ep->type == bp_catch_unload) | |
1628 | ; | |
1629 | } | |
1630 | ||
1631 | int | |
fba45db2 | 1632 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1633 | { |
1634 | return | |
1635 | (ep->type == bp_catch_catch) | |
1636 | || (ep->type == bp_catch_throw) | |
1637 | ; | |
1638 | } | |
1639 | ||
1640 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1641 | Also free any storage that is part of a bpstat. */ | |
1642 | ||
1643 | void | |
fba45db2 | 1644 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1645 | { |
1646 | bpstat p; | |
1647 | bpstat q; | |
1648 | ||
1649 | if (bsp == 0) | |
1650 | return; | |
1651 | p = *bsp; | |
1652 | while (p != NULL) | |
1653 | { | |
1654 | q = p->next; | |
1655 | if (p->old_val != NULL) | |
1656 | value_free (p->old_val); | |
c5aa993b | 1657 | free ((PTR) p); |
c906108c SS |
1658 | p = q; |
1659 | } | |
1660 | *bsp = NULL; | |
1661 | } | |
1662 | ||
1663 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1664 | is part of the bpstat is copied as well. */ | |
1665 | ||
1666 | bpstat | |
fba45db2 | 1667 | bpstat_copy (bpstat bs) |
c906108c SS |
1668 | { |
1669 | bpstat p = NULL; | |
1670 | bpstat tmp; | |
1671 | bpstat retval = NULL; | |
1672 | ||
1673 | if (bs == NULL) | |
1674 | return bs; | |
1675 | ||
1676 | for (; bs != NULL; bs = bs->next) | |
1677 | { | |
1678 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1679 | memcpy (tmp, bs, sizeof (*tmp)); | |
1680 | if (p == NULL) | |
1681 | /* This is the first thing in the chain. */ | |
1682 | retval = tmp; | |
1683 | else | |
1684 | p->next = tmp; | |
1685 | p = tmp; | |
1686 | } | |
1687 | p->next = NULL; | |
1688 | return retval; | |
1689 | } | |
1690 | ||
1691 | /* Find the bpstat associated with this breakpoint */ | |
1692 | ||
1693 | bpstat | |
fba45db2 | 1694 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1695 | { |
c5aa993b JM |
1696 | if (bsp == NULL) |
1697 | return NULL; | |
c906108c | 1698 | |
c5aa993b JM |
1699 | for (; bsp != NULL; bsp = bsp->next) |
1700 | { | |
1701 | if (bsp->breakpoint_at == breakpoint) | |
1702 | return bsp; | |
1703 | } | |
c906108c SS |
1704 | return NULL; |
1705 | } | |
1706 | ||
1707 | /* Find a step_resume breakpoint associated with this bpstat. | |
1708 | (If there are multiple step_resume bp's on the list, this function | |
1709 | will arbitrarily pick one.) | |
1710 | ||
1711 | It is an error to use this function if BPSTAT doesn't contain a | |
1712 | step_resume breakpoint. | |
1713 | ||
1714 | See wait_for_inferior's use of this function. */ | |
1715 | struct breakpoint * | |
fba45db2 | 1716 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c SS |
1717 | { |
1718 | if (bsp == NULL) | |
1719 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1720 | ||
1721 | for (; bsp != NULL; bsp = bsp->next) | |
1722 | { | |
1723 | if ((bsp->breakpoint_at != NULL) && | |
c5aa993b JM |
1724 | (bsp->breakpoint_at->type == bp_step_resume)) |
1725 | return bsp->breakpoint_at; | |
c906108c SS |
1726 | } |
1727 | ||
1728 | error ("Internal error (no step_resume breakpoint found)"); | |
1729 | } | |
1730 | ||
1731 | ||
1732 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1733 | at. *BSP upon return is a bpstat which points to the remaining | |
1734 | breakpoints stopped at (but which is not guaranteed to be good for | |
1735 | anything but further calls to bpstat_num). | |
1736 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1737 | ||
1738 | int | |
fba45db2 | 1739 | bpstat_num (bpstat *bsp) |
c906108c SS |
1740 | { |
1741 | struct breakpoint *b; | |
1742 | ||
1743 | if ((*bsp) == NULL) | |
1744 | return 0; /* No more breakpoint values */ | |
1745 | else | |
1746 | { | |
1747 | b = (*bsp)->breakpoint_at; | |
1748 | *bsp = (*bsp)->next; | |
1749 | if (b == NULL) | |
1750 | return -1; /* breakpoint that's been deleted since */ | |
1751 | else | |
c5aa993b | 1752 | return b->number; /* We have its number */ |
c906108c SS |
1753 | } |
1754 | } | |
1755 | ||
1756 | /* Modify BS so that the actions will not be performed. */ | |
1757 | ||
1758 | void | |
fba45db2 | 1759 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1760 | { |
1761 | for (; bs != NULL; bs = bs->next) | |
1762 | { | |
1763 | bs->commands = NULL; | |
1764 | if (bs->old_val != NULL) | |
1765 | { | |
1766 | value_free (bs->old_val); | |
1767 | bs->old_val = NULL; | |
1768 | } | |
1769 | } | |
1770 | } | |
1771 | ||
1772 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1773 | /* ARGSUSED */ | |
1774 | static void | |
fba45db2 | 1775 | cleanup_executing_breakpoints (PTR ignore) |
c906108c SS |
1776 | { |
1777 | executing_breakpoint_commands = 0; | |
1778 | } | |
1779 | ||
1780 | /* Execute all the commands associated with all the breakpoints at this | |
1781 | location. Any of these commands could cause the process to proceed | |
1782 | beyond this point, etc. We look out for such changes by checking | |
1783 | the global "breakpoint_proceeded" after each command. */ | |
1784 | ||
1785 | void | |
fba45db2 | 1786 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1787 | { |
1788 | bpstat bs; | |
1789 | struct cleanup *old_chain; | |
1790 | struct command_line *cmd; | |
1791 | ||
1792 | /* Avoid endless recursion if a `source' command is contained | |
1793 | in bs->commands. */ | |
1794 | if (executing_breakpoint_commands) | |
1795 | return; | |
1796 | ||
1797 | executing_breakpoint_commands = 1; | |
1798 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1799 | ||
1800 | top: | |
1801 | /* Note that (as of this writing), our callers all appear to | |
1802 | be passing us the address of global stop_bpstat. And, if | |
1803 | our calls to execute_control_command cause the inferior to | |
1804 | proceed, that global (and hence, *bsp) will change. | |
1805 | ||
1806 | We must be careful to not touch *bsp unless the inferior | |
1807 | has not proceeded. */ | |
1808 | ||
1809 | /* This pointer will iterate over the list of bpstat's. */ | |
1810 | bs = *bsp; | |
1811 | ||
1812 | breakpoint_proceeded = 0; | |
1813 | for (; bs != NULL; bs = bs->next) | |
1814 | { | |
1815 | cmd = bs->commands; | |
1816 | while (cmd != NULL) | |
1817 | { | |
1818 | execute_control_command (cmd); | |
1819 | ||
1820 | if (breakpoint_proceeded) | |
1821 | break; | |
1822 | else | |
1823 | cmd = cmd->next; | |
1824 | } | |
1825 | if (breakpoint_proceeded) | |
1826 | /* The inferior is proceeded by the command; bomb out now. | |
1827 | The bpstat chain has been blown away by wait_for_inferior. | |
1828 | But since execution has stopped again, there is a new bpstat | |
1829 | to look at, so start over. */ | |
1830 | goto top; | |
1831 | else | |
1832 | bs->commands = NULL; | |
1833 | } | |
1834 | ||
1835 | executing_breakpoint_commands = 0; | |
1836 | discard_cleanups (old_chain); | |
1837 | } | |
1838 | ||
e514a9d6 | 1839 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 1840 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
1841 | by having it set different print_it values. |
1842 | ||
1843 | Current scheme: When we stop, bpstat_print() is called. It loops | |
1844 | through the bpstat list of things causing this stop, calling the | |
1845 | print_bp_stop_message function on each one. The behavior of the | |
1846 | print_bp_stop_message function depends on the print_it field of | |
1847 | bpstat. If such field so indicates, call this function here. | |
1848 | ||
1849 | Return values from this routine (ultimately used by bpstat_print() | |
1850 | and normal_stop() to decide what to do): | |
1851 | PRINT_NOTHING: Means we already printed all we needed to print, | |
1852 | don't print anything else. | |
1853 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
1854 | that something to be followed by a location. | |
1855 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
1856 | that something to be followed by a location. | |
1857 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
1858 | analysis. */ | |
c906108c | 1859 | |
917317f4 | 1860 | static enum print_stop_action |
fba45db2 | 1861 | print_it_typical (bpstat bs) |
c906108c | 1862 | { |
8b93c638 JM |
1863 | #ifdef UI_OUT |
1864 | struct cleanup *old_chain; | |
1865 | struct ui_stream *stb; | |
1866 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 1867 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 1868 | #endif /* UI_OUT */ |
c906108c SS |
1869 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
1870 | which has since been deleted. */ | |
e514a9d6 | 1871 | if (bs->breakpoint_at == NULL) |
917317f4 | 1872 | return PRINT_UNKNOWN; |
c906108c | 1873 | |
e514a9d6 | 1874 | switch (bs->breakpoint_at->type) |
c906108c | 1875 | { |
e514a9d6 JM |
1876 | case bp_breakpoint: |
1877 | case bp_hardware_breakpoint: | |
8b93c638 JM |
1878 | #ifdef UI_OUT |
1879 | annotate_breakpoint (bs->breakpoint_at->number); | |
1880 | ui_out_text (uiout, "\nBreakpoint "); | |
fb40c209 AC |
1881 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
1882 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); | |
8b93c638 JM |
1883 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
1884 | ui_out_text (uiout, ", "); | |
1885 | return PRINT_SRC_AND_LOC; | |
1886 | #else | |
e514a9d6 JM |
1887 | /* I think the user probably only wants to see one breakpoint |
1888 | number, not all of them. */ | |
1889 | annotate_breakpoint (bs->breakpoint_at->number); | |
1890 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); | |
917317f4 | 1891 | return PRINT_SRC_AND_LOC; |
8b93c638 | 1892 | #endif |
e514a9d6 JM |
1893 | break; |
1894 | ||
1895 | case bp_shlib_event: | |
917317f4 JM |
1896 | /* Did we stop because the user set the stop_on_solib_events |
1897 | variable? (If so, we report this as a generic, "Stopped due | |
1898 | to shlib event" message.) */ | |
e514a9d6 JM |
1899 | printf_filtered ("Stopped due to shared library event\n"); |
1900 | return PRINT_NOTHING; | |
1901 | break; | |
1902 | ||
c4093a6a JM |
1903 | case bp_thread_event: |
1904 | /* Not sure how we will get here. | |
1905 | GDB should not stop for these breakpoints. */ | |
1906 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
1907 | return PRINT_NOTHING; | |
1908 | break; | |
1909 | ||
e514a9d6 | 1910 | case bp_catch_load: |
c906108c SS |
1911 | annotate_catchpoint (bs->breakpoint_at->number); |
1912 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
1913 | printf_filtered ("loaded"); |
1914 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1915 | return PRINT_SRC_AND_LOC; | |
1916 | break; | |
1917 | ||
1918 | case bp_catch_unload: | |
1919 | annotate_catchpoint (bs->breakpoint_at->number); | |
1920 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1921 | printf_filtered ("unloaded"); | |
1922 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1923 | return PRINT_SRC_AND_LOC; | |
1924 | break; | |
1925 | ||
1926 | case bp_catch_fork: | |
1927 | annotate_catchpoint (bs->breakpoint_at->number); | |
1928 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1929 | printf_filtered ("forked"); | |
53a5351d JM |
1930 | printf_filtered (" process %d), ", |
1931 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 1932 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1933 | break; |
1934 | ||
1935 | case bp_catch_vfork: | |
1936 | annotate_catchpoint (bs->breakpoint_at->number); | |
1937 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1938 | printf_filtered ("vforked"); | |
1939 | printf_filtered (" process %d), ", | |
1940 | bs->breakpoint_at->forked_inferior_pid); | |
1941 | return PRINT_SRC_AND_LOC; | |
1942 | break; | |
1943 | ||
1944 | case bp_catch_exec: | |
c906108c SS |
1945 | annotate_catchpoint (bs->breakpoint_at->number); |
1946 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
1947 | bs->breakpoint_at->number, |
1948 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 1949 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1950 | break; |
1951 | ||
1952 | case bp_catch_catch: | |
53a5351d JM |
1953 | if (current_exception_event && |
1954 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
1955 | { |
1956 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1957 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
1958 | bs->breakpoint_at->number); | |
c5aa993b JM |
1959 | printf_filtered ("throw location "); |
1960 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1961 | printf_filtered ("%s:%d", | |
1962 | CURRENT_EXCEPTION_THROW_FILE, | |
1963 | CURRENT_EXCEPTION_THROW_LINE); | |
1964 | else | |
1965 | printf_filtered ("unknown"); | |
1966 | ||
1967 | printf_filtered (", catch location "); | |
1968 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1969 | printf_filtered ("%s:%d", | |
1970 | CURRENT_EXCEPTION_CATCH_FILE, | |
1971 | CURRENT_EXCEPTION_CATCH_LINE); | |
1972 | else | |
1973 | printf_filtered ("unknown"); | |
1974 | ||
1975 | printf_filtered ("\n"); | |
e514a9d6 JM |
1976 | /* don't bother to print location frame info */ |
1977 | return PRINT_SRC_ONLY; | |
c5aa993b | 1978 | } |
c906108c | 1979 | else |
c5aa993b | 1980 | { |
e514a9d6 JM |
1981 | /* really throw, some other bpstat will handle it */ |
1982 | return PRINT_UNKNOWN; | |
c5aa993b | 1983 | } |
e514a9d6 JM |
1984 | break; |
1985 | ||
1986 | case bp_catch_throw: | |
53a5351d JM |
1987 | if (current_exception_event && |
1988 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
1989 | { |
1990 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1991 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
1992 | bs->breakpoint_at->number); | |
c5aa993b JM |
1993 | printf_filtered ("throw location "); |
1994 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1995 | printf_filtered ("%s:%d", | |
1996 | CURRENT_EXCEPTION_THROW_FILE, | |
1997 | CURRENT_EXCEPTION_THROW_LINE); | |
1998 | else | |
1999 | printf_filtered ("unknown"); | |
2000 | ||
2001 | printf_filtered (", catch location "); | |
2002 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2003 | printf_filtered ("%s:%d", | |
2004 | CURRENT_EXCEPTION_CATCH_FILE, | |
2005 | CURRENT_EXCEPTION_CATCH_LINE); | |
2006 | else | |
2007 | printf_filtered ("unknown"); | |
2008 | ||
2009 | printf_filtered ("\n"); | |
e514a9d6 JM |
2010 | /* don't bother to print location frame info */ |
2011 | return PRINT_SRC_ONLY; | |
c5aa993b | 2012 | } |
c906108c | 2013 | else |
c5aa993b | 2014 | { |
e514a9d6 JM |
2015 | /* really catch, some other bpstat will handle it */ |
2016 | return PRINT_UNKNOWN; | |
c5aa993b | 2017 | } |
e514a9d6 | 2018 | break; |
c906108c | 2019 | |
e514a9d6 JM |
2020 | case bp_watchpoint: |
2021 | case bp_hardware_watchpoint: | |
2022 | if (bs->old_val != NULL) | |
2023 | { | |
2024 | annotate_watchpoint (bs->breakpoint_at->number); | |
8b93c638 | 2025 | #ifdef UI_OUT |
fb40c209 AC |
2026 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2027 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); | |
8b93c638 JM |
2028 | mention (bs->breakpoint_at); |
2029 | ui_out_list_begin (uiout, "value"); | |
2030 | ui_out_text (uiout, "\nOld value = "); | |
2031 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2032 | ui_out_field_stream (uiout, "old", stb); | |
2033 | ui_out_text (uiout, "\nNew value = "); | |
2034 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2035 | ui_out_field_stream (uiout, "new", stb); | |
2036 | ui_out_list_end (uiout); | |
2037 | ui_out_text (uiout, "\n"); | |
2038 | #else | |
e514a9d6 JM |
2039 | mention (bs->breakpoint_at); |
2040 | printf_filtered ("\nOld value = "); | |
2041 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2042 | printf_filtered ("\nNew value = "); | |
2043 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
2044 | Val_pretty_default); | |
2045 | printf_filtered ("\n"); | |
8b93c638 | 2046 | #endif |
e514a9d6 JM |
2047 | value_free (bs->old_val); |
2048 | bs->old_val = NULL; | |
2049 | } | |
2050 | /* More than one watchpoint may have been triggered. */ | |
2051 | return PRINT_UNKNOWN; | |
2052 | break; | |
2053 | ||
2054 | case bp_read_watchpoint: | |
8b93c638 | 2055 | #ifdef UI_OUT |
fb40c209 AC |
2056 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2057 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); | |
8b93c638 JM |
2058 | mention (bs->breakpoint_at); |
2059 | ui_out_list_begin (uiout, "value"); | |
2060 | ui_out_text (uiout, "\nValue = "); | |
2061 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2062 | ui_out_field_stream (uiout, "value", stb); | |
2063 | ui_out_list_end (uiout); | |
2064 | ui_out_text (uiout, "\n"); | |
2065 | #else | |
c906108c | 2066 | mention (bs->breakpoint_at); |
e514a9d6 | 2067 | printf_filtered ("\nValue = "); |
c906108c SS |
2068 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
2069 | Val_pretty_default); | |
2070 | printf_filtered ("\n"); | |
8b93c638 | 2071 | #endif |
917317f4 | 2072 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2073 | break; |
2074 | ||
2075 | case bp_access_watchpoint: | |
8b93c638 JM |
2076 | #ifdef UI_OUT |
2077 | if (bs->old_val != NULL) | |
2078 | { | |
2079 | annotate_watchpoint (bs->breakpoint_at->number); | |
fb40c209 AC |
2080 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2081 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); | |
8b93c638 JM |
2082 | mention (bs->breakpoint_at); |
2083 | ui_out_list_begin (uiout, "value"); | |
2084 | ui_out_text (uiout, "\nOld value = "); | |
2085 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2086 | ui_out_field_stream (uiout, "old", stb); | |
2087 | value_free (bs->old_val); | |
2088 | bs->old_val = NULL; | |
2089 | ui_out_text (uiout, "\nNew value = "); | |
2090 | } | |
2091 | else | |
2092 | { | |
2093 | mention (bs->breakpoint_at); | |
fb40c209 AC |
2094 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2095 | ui_out_list_begin (uiout, "value"); | |
8b93c638 JM |
2096 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
2097 | ui_out_text (uiout, "\nValue = "); | |
2098 | } | |
2099 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2100 | ui_out_field_stream (uiout, "new", stb); | |
2101 | ui_out_list_end (uiout); | |
2102 | ui_out_text (uiout, "\n"); | |
2103 | #else | |
e514a9d6 JM |
2104 | if (bs->old_val != NULL) |
2105 | { | |
2106 | annotate_watchpoint (bs->breakpoint_at->number); | |
2107 | mention (bs->breakpoint_at); | |
2108 | printf_filtered ("\nOld value = "); | |
2109 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2110 | value_free (bs->old_val); | |
2111 | bs->old_val = NULL; | |
2112 | printf_filtered ("\nNew value = "); | |
2113 | } | |
2114 | else | |
2115 | { | |
2116 | mention (bs->breakpoint_at); | |
2117 | printf_filtered ("\nValue = "); | |
2118 | } | |
c906108c | 2119 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
c5aa993b | 2120 | Val_pretty_default); |
c906108c | 2121 | printf_filtered ("\n"); |
8b93c638 | 2122 | #endif |
917317f4 | 2123 | return PRINT_UNKNOWN; |
e514a9d6 | 2124 | break; |
4ce44c66 | 2125 | |
e514a9d6 JM |
2126 | /* Fall through, we don't deal with these types of breakpoints |
2127 | here. */ | |
2128 | ||
11cf8741 | 2129 | case bp_finish: |
fb40c209 AC |
2130 | #ifdef UI_OUT |
2131 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2132 | ui_out_field_string (uiout, "reason", "function-finished"); | |
2133 | #endif | |
8b93c638 JM |
2134 | return PRINT_UNKNOWN; |
2135 | break; | |
2136 | ||
e514a9d6 | 2137 | case bp_until: |
fb40c209 AC |
2138 | #ifdef UI_OUT |
2139 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2140 | ui_out_field_string (uiout, "reason", "location-reached"); | |
2141 | #endif | |
8b93c638 JM |
2142 | return PRINT_UNKNOWN; |
2143 | break; | |
2144 | ||
c2d11a7d | 2145 | case bp_none: |
e514a9d6 JM |
2146 | case bp_longjmp: |
2147 | case bp_longjmp_resume: | |
2148 | case bp_step_resume: | |
2149 | case bp_through_sigtramp: | |
2150 | case bp_watchpoint_scope: | |
2151 | case bp_call_dummy: | |
2152 | default: | |
2153 | return PRINT_UNKNOWN; | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | /* Generic routine for printing messages indicating why we | |
2158 | stopped. The behavior of this function depends on the value | |
2159 | 'print_it' in the bpstat structure. Under some circumstances we | |
2160 | may decide not to print anything here and delegate the task to | |
2161 | normal_stop(). */ | |
2162 | ||
2163 | static enum print_stop_action | |
2164 | print_bp_stop_message (bpstat bs) | |
2165 | { | |
2166 | switch (bs->print_it) | |
2167 | { | |
2168 | case print_it_noop: | |
2169 | /* Nothing should be printed for this bpstat entry. */ | |
2170 | return PRINT_UNKNOWN; | |
2171 | break; | |
2172 | ||
2173 | case print_it_done: | |
2174 | /* We still want to print the frame, but we already printed the | |
2175 | relevant messages. */ | |
2176 | return PRINT_SRC_AND_LOC; | |
2177 | break; | |
2178 | ||
2179 | case print_it_normal: | |
2180 | /* Normal case, we handle everything in print_it_typical. */ | |
2181 | return print_it_typical (bs); | |
2182 | break; | |
2183 | default: | |
2184 | internal_error ("print_bp_stop_message: unrecognized enum value"); | |
2185 | break; | |
c906108c | 2186 | } |
c906108c SS |
2187 | } |
2188 | ||
e514a9d6 JM |
2189 | /* Print a message indicating what happened. This is called from |
2190 | normal_stop(). The input to this routine is the head of the bpstat | |
2191 | list - a list of the eventpoints that caused this stop. This | |
2192 | routine calls the generic print routine for printing a message | |
2193 | about reasons for stopping. This will print (for example) the | |
2194 | "Breakpoint n," part of the output. The return value of this | |
2195 | routine is one of: | |
c906108c | 2196 | |
917317f4 JM |
2197 | PRINT_UNKNOWN: Means we printed nothing |
2198 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2199 | code to print the location. An example is |
2200 | "Breakpoint 1, " which should be followed by | |
2201 | the location. | |
917317f4 | 2202 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2203 | to also print the location part of the message. |
2204 | An example is the catch/throw messages, which | |
917317f4 JM |
2205 | don't require a location appended to the end. |
2206 | PRINT_NOTHING: We have done some printing and we don't need any | |
2207 | further info to be printed.*/ | |
c906108c | 2208 | |
917317f4 | 2209 | enum print_stop_action |
fba45db2 | 2210 | bpstat_print (bpstat bs) |
c906108c SS |
2211 | { |
2212 | int val; | |
c5aa993b | 2213 | |
c906108c | 2214 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2215 | (Currently all watchpoints go on the bpstat whether hit or not. |
2216 | That probably could (should) be changed, provided care is taken | |
c906108c | 2217 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2218 | for (; bs; bs = bs->next) |
2219 | { | |
2220 | val = print_bp_stop_message (bs); | |
2221 | if (val == PRINT_SRC_ONLY | |
2222 | || val == PRINT_SRC_AND_LOC | |
2223 | || val == PRINT_NOTHING) | |
2224 | return val; | |
2225 | } | |
c906108c | 2226 | |
e514a9d6 JM |
2227 | /* We reached the end of the chain, or we got a null BS to start |
2228 | with and nothing was printed. */ | |
917317f4 | 2229 | return PRINT_UNKNOWN; |
c906108c SS |
2230 | } |
2231 | ||
2232 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2233 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2234 | The argument is a "struct expression *" that has been cast to char * to | |
2235 | make it pass through catch_errors. */ | |
2236 | ||
2237 | static int | |
fba45db2 | 2238 | breakpoint_cond_eval (PTR exp) |
c906108c SS |
2239 | { |
2240 | value_ptr mark = value_mark (); | |
c5aa993b | 2241 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2242 | value_free_to_mark (mark); |
2243 | return i; | |
2244 | } | |
2245 | ||
2246 | /* Allocate a new bpstat and chain it to the current one. */ | |
2247 | ||
2248 | static bpstat | |
2249 | bpstat_alloc (b, cbs) | |
2250 | register struct breakpoint *b; | |
c5aa993b | 2251 | bpstat cbs; /* Current "bs" value */ |
c906108c SS |
2252 | { |
2253 | bpstat bs; | |
2254 | ||
2255 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2256 | cbs->next = bs; | |
2257 | bs->breakpoint_at = b; | |
2258 | /* If the condition is false, etc., don't do the commands. */ | |
2259 | bs->commands = NULL; | |
2260 | bs->old_val = NULL; | |
2261 | bs->print_it = print_it_normal; | |
2262 | return bs; | |
2263 | } | |
2264 | \f | |
2265 | /* Possible return values for watchpoint_check (this can't be an enum | |
2266 | because of check_errors). */ | |
2267 | /* The watchpoint has been deleted. */ | |
2268 | #define WP_DELETED 1 | |
2269 | /* The value has changed. */ | |
2270 | #define WP_VALUE_CHANGED 2 | |
2271 | /* The value has not changed. */ | |
2272 | #define WP_VALUE_NOT_CHANGED 3 | |
2273 | ||
2274 | #define BP_TEMPFLAG 1 | |
2275 | #define BP_HARDWAREFLAG 2 | |
2276 | ||
2277 | /* Check watchpoint condition. */ | |
2278 | ||
2279 | static int | |
fba45db2 | 2280 | watchpoint_check (PTR p) |
c906108c SS |
2281 | { |
2282 | bpstat bs = (bpstat) p; | |
2283 | struct breakpoint *b; | |
2284 | struct frame_info *fr; | |
2285 | int within_current_scope; | |
2286 | ||
2287 | b = bs->breakpoint_at; | |
2288 | ||
2289 | if (b->exp_valid_block == NULL) | |
2290 | within_current_scope = 1; | |
2291 | else | |
2292 | { | |
2293 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2294 | any chance of handling watchpoints on local variables, we'll need |
2295 | the frame chain (so we can determine if we're in scope). */ | |
2296 | reinit_frame_cache (); | |
c906108c SS |
2297 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
2298 | within_current_scope = (fr != NULL); | |
2299 | if (within_current_scope) | |
2300 | /* If we end up stopping, the current frame will get selected | |
2301 | in normal_stop. So this call to select_frame won't affect | |
2302 | the user. */ | |
2303 | select_frame (fr, -1); | |
2304 | } | |
c5aa993b | 2305 | |
c906108c SS |
2306 | if (within_current_scope) |
2307 | { | |
2308 | /* We use value_{,free_to_}mark because it could be a | |
2309 | *long* time before we return to the command level and | |
c5aa993b JM |
2310 | call free_all_values. We can't call free_all_values because |
2311 | we might be in the middle of evaluating a function call. */ | |
c906108c SS |
2312 | |
2313 | value_ptr mark = value_mark (); | |
2314 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
2315 | if (!value_equal (b->val, new_val)) | |
2316 | { | |
2317 | release_value (new_val); | |
2318 | value_free_to_mark (mark); | |
2319 | bs->old_val = b->val; | |
2320 | b->val = new_val; | |
2321 | /* We will stop here */ | |
2322 | return WP_VALUE_CHANGED; | |
2323 | } | |
2324 | else | |
2325 | { | |
2326 | /* Nothing changed, don't do anything. */ | |
2327 | value_free_to_mark (mark); | |
2328 | /* We won't stop here */ | |
2329 | return WP_VALUE_NOT_CHANGED; | |
2330 | } | |
2331 | } | |
2332 | else | |
2333 | { | |
2334 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2335 | if we temporarily ignored the watchpoint, then when |
2336 | we reenter the block in which it is valid it contains | |
2337 | garbage (in the case of a function, it may have two | |
2338 | garbage values, one before and one after the prologue). | |
2339 | So we can't even detect the first assignment to it and | |
2340 | watch after that (since the garbage may or may not equal | |
2341 | the first value assigned). */ | |
4ce44c66 JM |
2342 | /* We print all the stop information in print_it_typical(), but |
2343 | in this case, by the time we call print_it_typical() this bp | |
2344 | will be deleted already. So we have no choice but print the | |
2345 | information here. */ | |
8b93c638 | 2346 | #ifdef UI_OUT |
fb40c209 AC |
2347 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2348 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); | |
8b93c638 JM |
2349 | ui_out_text (uiout, "\nWatchpoint "); |
2350 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2351 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2352 | which its expression is valid.\n"); | |
2353 | #else | |
c906108c SS |
2354 | printf_filtered ("\ |
2355 | Watchpoint %d deleted because the program has left the block in\n\ | |
2356 | which its expression is valid.\n", bs->breakpoint_at->number); | |
8b93c638 | 2357 | #endif |
4ce44c66 | 2358 | |
c906108c SS |
2359 | if (b->related_breakpoint) |
2360 | b->related_breakpoint->disposition = del_at_next_stop; | |
2361 | b->disposition = del_at_next_stop; | |
2362 | ||
2363 | return WP_DELETED; | |
2364 | } | |
2365 | } | |
2366 | ||
c906108c SS |
2367 | /* Get a bpstat associated with having just stopped at address *PC |
2368 | and frame address CORE_ADDRESS. Update *PC to point at the | |
2369 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
2370 | if this is known to not be a real breakpoint (it could still be a | |
2371 | watchpoint, though). */ | |
2372 | ||
2373 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2374 | don't understand this stop. Result is a chain of bpstat's such that: | |
2375 | ||
c5aa993b | 2376 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2377 | |
c5aa993b | 2378 | if we understand why we stopped, the result is not null. |
c906108c | 2379 | |
c5aa993b JM |
2380 | Each element of the chain refers to a particular breakpoint or |
2381 | watchpoint at which we have stopped. (We may have stopped for | |
2382 | several reasons concurrently.) | |
c906108c | 2383 | |
c5aa993b JM |
2384 | Each element of the chain has valid next, breakpoint_at, |
2385 | commands, FIXME??? fields. */ | |
c906108c SS |
2386 | |
2387 | bpstat | |
fba45db2 | 2388 | bpstat_stop_status (CORE_ADDR *pc, int not_a_breakpoint) |
c906108c SS |
2389 | { |
2390 | register struct breakpoint *b, *temp; | |
2391 | CORE_ADDR bp_addr; | |
2392 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2393 | int real_breakpoint = 0; | |
2394 | /* Root of the chain of bpstat's */ | |
2395 | struct bpstats root_bs[1]; | |
2396 | /* Pointer to the last thing in the chain currently. */ | |
2397 | bpstat bs = root_bs; | |
2398 | static char message1[] = | |
c5aa993b JM |
2399 | "Error evaluating expression for watchpoint %d\n"; |
2400 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c SS |
2401 | |
2402 | /* Get the address where the breakpoint would have been. */ | |
6426a772 JM |
2403 | bp_addr = *pc - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P ? |
2404 | 0 : DECR_PC_AFTER_BREAK); | |
c906108c SS |
2405 | |
2406 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
2407 | { |
2408 | if (b->enable == disabled | |
2409 | || b->enable == shlib_disabled | |
2410 | || b->enable == call_disabled) | |
2411 | continue; | |
2412 | ||
2413 | if (b->type != bp_watchpoint | |
2414 | && b->type != bp_hardware_watchpoint | |
2415 | && b->type != bp_read_watchpoint | |
2416 | && b->type != bp_access_watchpoint | |
2417 | && b->type != bp_hardware_breakpoint | |
2418 | && b->type != bp_catch_fork | |
2419 | && b->type != bp_catch_vfork | |
2420 | && b->type != bp_catch_exec | |
2421 | && b->type != bp_catch_catch | |
2422 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
2423 | if (b->address != bp_addr || /* address doesn't match or */ | |
2424 | (overlay_debugging && /* overlay doesn't match */ | |
2425 | section_is_overlay (b->section) && | |
2426 | !section_is_mapped (b->section))) | |
c906108c SS |
2427 | continue; |
2428 | ||
c5aa993b JM |
2429 | if (b->type == bp_hardware_breakpoint |
2430 | && b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2431 | continue; | |
2432 | ||
c5aa993b JM |
2433 | /* Is this a catchpoint of a load or unload? If so, did we |
2434 | get a load or unload of the specified library? If not, | |
2435 | ignore it. */ | |
2436 | if ((b->type == bp_catch_load) | |
c906108c | 2437 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
c5aa993b JM |
2438 | && (!SOLIB_HAVE_LOAD_EVENT (inferior_pid) |
2439 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2440 | && (strcmp (b->dll_pathname, |
2441 | SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2442 | != 0))) | |
c906108c | 2443 | #endif |
c5aa993b JM |
2444 | ) |
2445 | continue; | |
2446 | ||
2447 | if ((b->type == bp_catch_unload) | |
c906108c | 2448 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
c5aa993b JM |
2449 | && (!SOLIB_HAVE_UNLOAD_EVENT (inferior_pid) |
2450 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2451 | && (strcmp (b->dll_pathname, |
2452 | SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2453 | != 0))) | |
c906108c | 2454 | #endif |
c5aa993b JM |
2455 | ) |
2456 | continue; | |
c906108c | 2457 | |
c5aa993b JM |
2458 | if ((b->type == bp_catch_fork) |
2459 | && !target_has_forked (inferior_pid, &b->forked_inferior_pid)) | |
2460 | continue; | |
c906108c | 2461 | |
c5aa993b JM |
2462 | if ((b->type == bp_catch_vfork) |
2463 | && !target_has_vforked (inferior_pid, &b->forked_inferior_pid)) | |
2464 | continue; | |
c906108c | 2465 | |
c5aa993b JM |
2466 | if ((b->type == bp_catch_exec) |
2467 | && !target_has_execd (inferior_pid, &b->exec_pathname)) | |
2468 | continue; | |
c906108c | 2469 | |
c5aa993b JM |
2470 | if (ep_is_exception_catchpoint (b) && |
2471 | !(current_exception_event = target_get_current_exception_event ())) | |
2472 | continue; | |
c906108c | 2473 | |
c5aa993b JM |
2474 | /* Come here if it's a watchpoint, or if the break address matches */ |
2475 | ||
2476 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2477 | ||
2478 | /* Watchpoints may change this, if not found to have triggered. */ | |
2479 | bs->stop = 1; | |
2480 | bs->print = 1; | |
2481 | ||
2482 | sprintf (message, message1, b->number); | |
53a5351d JM |
2483 | if (b->type == bp_watchpoint || |
2484 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2485 | { |
53a5351d JM |
2486 | switch (catch_errors (watchpoint_check, bs, message, |
2487 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2488 | { |
2489 | case WP_DELETED: | |
2490 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2491 | /* Actually this is superfluous, because by the time we |
2492 | call print_it_typical() the wp will be already deleted, | |
2493 | and the function will return immediately. */ | |
c5aa993b JM |
2494 | bs->print_it = print_it_done; |
2495 | /* Stop. */ | |
2496 | break; | |
2497 | case WP_VALUE_CHANGED: | |
2498 | /* Stop. */ | |
2499 | ++(b->hit_count); | |
2500 | break; | |
2501 | case WP_VALUE_NOT_CHANGED: | |
2502 | /* Don't stop. */ | |
2503 | bs->print_it = print_it_noop; | |
2504 | bs->stop = 0; | |
c5aa993b JM |
2505 | continue; |
2506 | default: | |
2507 | /* Can't happen. */ | |
2508 | /* FALLTHROUGH */ | |
2509 | case 0: | |
2510 | /* Error from catch_errors. */ | |
2511 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2512 | if (b->related_breakpoint) | |
2513 | b->related_breakpoint->disposition = del_at_next_stop; | |
2514 | b->disposition = del_at_next_stop; | |
2515 | /* We've already printed what needs to be printed. */ | |
2516 | bs->print_it = print_it_done; | |
2517 | ||
2518 | /* Stop. */ | |
2519 | break; | |
2520 | } | |
2521 | } | |
53a5351d JM |
2522 | else if (b->type == bp_read_watchpoint || |
2523 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2524 | { |
2525 | CORE_ADDR addr; | |
2526 | value_ptr v; | |
2527 | int found = 0; | |
2528 | ||
2529 | addr = target_stopped_data_address (); | |
2530 | if (addr == 0) | |
2531 | continue; | |
2532 | for (v = b->val_chain; v; v = v->next) | |
2533 | { | |
5c44784c JM |
2534 | if (VALUE_LVAL (v) == lval_memory |
2535 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2536 | { |
2e70b7b9 MS |
2537 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2538 | ||
2539 | if (v == b->val_chain | |
2540 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2541 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2542 | { | |
2543 | CORE_ADDR vaddr; | |
2544 | ||
2545 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2546 | /* Exact match not required. Within range is | |
2547 | sufficient. */ | |
2548 | if (addr >= vaddr && | |
2549 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2550 | found = 1; | |
2551 | } | |
c5aa993b JM |
2552 | } |
2553 | } | |
2554 | if (found) | |
53a5351d JM |
2555 | switch (catch_errors (watchpoint_check, bs, message, |
2556 | RETURN_MASK_ALL)) | |
c906108c SS |
2557 | { |
2558 | case WP_DELETED: | |
2559 | /* We've already printed what needs to be printed. */ | |
2560 | bs->print_it = print_it_done; | |
2561 | /* Stop. */ | |
2562 | break; | |
2563 | case WP_VALUE_CHANGED: | |
99e5c1c8 MS |
2564 | if (b->type == bp_read_watchpoint) |
2565 | { | |
2566 | /* Don't stop: read watchpoints shouldn't fire if | |
2567 | the value has changed. This is for targets which | |
2568 | cannot set read-only watchpoints. */ | |
2569 | bs->print_it = print_it_noop; | |
2570 | bs->stop = 0; | |
2571 | continue; | |
2572 | } | |
2573 | ++(b->hit_count); | |
2574 | break; | |
c5aa993b | 2575 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2576 | /* Stop. */ |
2577 | ++(b->hit_count); | |
2578 | break; | |
c906108c SS |
2579 | default: |
2580 | /* Can't happen. */ | |
c906108c SS |
2581 | case 0: |
2582 | /* Error from catch_errors. */ | |
2583 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2584 | if (b->related_breakpoint) | |
2585 | b->related_breakpoint->disposition = del_at_next_stop; | |
2586 | b->disposition = del_at_next_stop; | |
2587 | /* We've already printed what needs to be printed. */ | |
2588 | bs->print_it = print_it_done; | |
c906108c SS |
2589 | break; |
2590 | } | |
53a5351d JM |
2591 | else /* found == 0 */ |
2592 | { | |
2593 | /* This is a case where some watchpoint(s) triggered, | |
2594 | but not at the address of this watchpoint (FOUND | |
2595 | was left zero). So don't print anything for this | |
2596 | watchpoint. */ | |
2597 | bs->print_it = print_it_noop; | |
2598 | bs->stop = 0; | |
2599 | continue; | |
2600 | } | |
c5aa993b JM |
2601 | } |
2602 | else | |
2603 | { | |
2604 | /* By definition, an encountered breakpoint is a triggered | |
2605 | breakpoint. */ | |
2606 | ++(b->hit_count); | |
c906108c | 2607 | |
c5aa993b JM |
2608 | real_breakpoint = 1; |
2609 | } | |
2610 | ||
ed9a39eb JM |
2611 | if (b->frame && |
2612 | b->frame != (get_current_frame ())->frame) | |
c5aa993b JM |
2613 | bs->stop = 0; |
2614 | else | |
2615 | { | |
2616 | int value_is_zero = 0; | |
2617 | ||
2618 | if (b->cond) | |
2619 | { | |
2620 | /* Need to select the frame, with all that implies | |
2621 | so that the conditions will have the right context. */ | |
2622 | select_frame (get_current_frame (), 0); | |
2623 | value_is_zero | |
2624 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2625 | "Error in testing breakpoint condition:\n", | |
2626 | RETURN_MASK_ALL); | |
2627 | /* FIXME-someday, should give breakpoint # */ | |
2628 | free_all_values (); | |
2629 | } | |
2630 | if (b->cond && value_is_zero) | |
2631 | { | |
2632 | bs->stop = 0; | |
2633 | /* Don't consider this a hit. */ | |
2634 | --(b->hit_count); | |
2635 | } | |
2636 | else if (b->ignore_count > 0) | |
2637 | { | |
2638 | b->ignore_count--; | |
5c44784c | 2639 | annotate_ignore_count_change (); |
c5aa993b JM |
2640 | bs->stop = 0; |
2641 | } | |
2642 | else | |
2643 | { | |
2644 | /* We will stop here */ | |
2645 | if (b->disposition == disable) | |
2646 | b->enable = disabled; | |
2647 | bs->commands = b->commands; | |
2648 | if (b->silent) | |
2649 | bs->print = 0; | |
2650 | if (bs->commands && | |
2651 | (STREQ ("silent", bs->commands->line) || | |
2652 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2653 | { | |
2654 | bs->commands = bs->commands->next; | |
c906108c | 2655 | bs->print = 0; |
c5aa993b JM |
2656 | } |
2657 | } | |
2658 | } | |
2659 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2660 | if (bs->stop == 0 || bs->print == 0) | |
2661 | bs->print_it = print_it_noop; | |
2662 | } | |
c906108c SS |
2663 | |
2664 | bs->next = NULL; /* Terminate the chain */ | |
2665 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2666 | ||
2667 | if (real_breakpoint && bs) | |
2668 | { | |
c5aa993b | 2669 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2670 | { |
c5aa993b | 2671 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2672 | { |
2673 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2674 | write_pc (*pc); | |
2675 | } | |
2676 | } | |
2677 | else | |
2678 | { | |
2679 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2680 | { | |
2681 | *pc = bp_addr; | |
2682 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2683 | SHIFT_INST_REGS (); |
c906108c SS |
2684 | #else /* No SHIFT_INST_REGS. */ |
2685 | write_pc (bp_addr); | |
2686 | #endif /* No SHIFT_INST_REGS. */ | |
2687 | } | |
2688 | } | |
2689 | } | |
2690 | ||
2691 | /* The value of a hardware watchpoint hasn't changed, but the | |
2692 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2693 | if (bs && !bs->stop && |
c906108c SS |
2694 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2695 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2696 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2697 | { | |
2698 | remove_breakpoints (); | |
2699 | insert_breakpoints (); | |
2700 | } | |
2701 | return bs; | |
2702 | } | |
2703 | \f | |
2704 | /* Tell what to do about this bpstat. */ | |
2705 | struct bpstat_what | |
fba45db2 | 2706 | bpstat_what (bpstat bs) |
c906108c SS |
2707 | { |
2708 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2709 | enum class |
2710 | { | |
2711 | /* This bpstat element has no effect on the main_action. */ | |
2712 | no_effect = 0, | |
2713 | ||
2714 | /* There was a watchpoint, stop but don't print. */ | |
2715 | wp_silent, | |
c906108c | 2716 | |
c5aa993b JM |
2717 | /* There was a watchpoint, stop and print. */ |
2718 | wp_noisy, | |
c906108c | 2719 | |
c5aa993b JM |
2720 | /* There was a breakpoint but we're not stopping. */ |
2721 | bp_nostop, | |
c906108c | 2722 | |
c5aa993b JM |
2723 | /* There was a breakpoint, stop but don't print. */ |
2724 | bp_silent, | |
c906108c | 2725 | |
c5aa993b JM |
2726 | /* There was a breakpoint, stop and print. */ |
2727 | bp_noisy, | |
c906108c | 2728 | |
c5aa993b JM |
2729 | /* We hit the longjmp breakpoint. */ |
2730 | long_jump, | |
c906108c | 2731 | |
c5aa993b JM |
2732 | /* We hit the longjmp_resume breakpoint. */ |
2733 | long_resume, | |
c906108c | 2734 | |
c5aa993b JM |
2735 | /* We hit the step_resume breakpoint. */ |
2736 | step_resume, | |
c906108c | 2737 | |
c5aa993b JM |
2738 | /* We hit the through_sigtramp breakpoint. */ |
2739 | through_sig, | |
c906108c | 2740 | |
c5aa993b JM |
2741 | /* We hit the shared library event breakpoint. */ |
2742 | shlib_event, | |
c906108c | 2743 | |
c5aa993b JM |
2744 | /* We caught a shared library event. */ |
2745 | catch_shlib_event, | |
c906108c | 2746 | |
c5aa993b JM |
2747 | /* This is just used to count how many enums there are. */ |
2748 | class_last | |
c906108c SS |
2749 | }; |
2750 | ||
2751 | /* Here is the table which drives this routine. So that we can | |
2752 | format it pretty, we define some abbreviations for the | |
2753 | enum bpstat_what codes. */ | |
2754 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2755 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2756 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2757 | #define sgl BPSTAT_WHAT_SINGLE | |
2758 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2759 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2760 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2761 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2762 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2763 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2764 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2765 | ||
2766 | /* "Can't happen." Might want to print an error message. | |
2767 | abort() is not out of the question, but chances are GDB is just | |
2768 | a bit confused, not unusable. */ | |
2769 | #define err BPSTAT_WHAT_STOP_NOISY | |
2770 | ||
2771 | /* Given an old action and a class, come up with a new action. */ | |
2772 | /* One interesting property of this table is that wp_silent is the same | |
2773 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2774 | after stopping, the check for whether to step over a breakpoint | |
2775 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2776 | reference to how we stopped. We retain separate wp_silent and |
2777 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2778 | |
2779 | Another possibly interesting property of this table is that | |
2780 | there's a partial ordering, priority-like, of the actions. Once | |
2781 | you've decided that some action is appropriate, you'll never go | |
2782 | back and decide something of a lower priority is better. The | |
2783 | ordering is: | |
2784 | ||
c5aa993b JM |
2785 | kc < clr sgl shl slr sn sr ss ts |
2786 | sgl < clrs shl shlr slr sn sr ss ts | |
2787 | slr < err shl shlr sn sr ss ts | |
2788 | clr < clrs err shl shlr sn sr ss ts | |
2789 | clrs < err shl shlr sn sr ss ts | |
2790 | ss < shl shlr sn sr ts | |
2791 | sn < shl shlr sr ts | |
2792 | sr < shl shlr ts | |
2793 | shl < shlr | |
2794 | ts < | |
2795 | shlr < | |
2796 | ||
43ff13b4 JM |
2797 | What I think this means is that we don't need a damned table |
2798 | here. If you just put the rows and columns in the right order, | |
2799 | it'd look awfully regular. We could simply walk the bpstat list | |
2800 | and choose the highest priority action we find, with a little | |
2801 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2802 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2803 | is messy anyway). */ | |
c906108c SS |
2804 | |
2805 | /* step_resume entries: a step resume breakpoint overrides another | |
2806 | breakpoint of signal handling (see comment in wait_for_inferior | |
2807 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
2808 | /* We handle the through_sigtramp_breakpoint the same way; having both | |
2809 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2810 | ||
2811 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2812 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2813 | { | |
2814 | /* old action */ | |
2815 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2816 | */ | |
2817 | /*no_effect */ | |
2818 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2819 | /*wp_silent */ | |
2820 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2821 | /*wp_noisy */ | |
2822 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2823 | /*bp_nostop */ | |
2824 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2825 | /*bp_silent */ | |
2826 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2827 | /*bp_noisy */ | |
2828 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2829 | /*long_jump */ | |
a48bb0b3 | 2830 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
2831 | /*long_resume */ |
2832 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2833 | /*step_resume */ | |
2834 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2835 | /*through_sig */ | |
2836 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2837 | /*shlib */ | |
2838 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2839 | /*catch_shlib */ | |
2840 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2841 | }; | |
c906108c SS |
2842 | |
2843 | #undef kc | |
2844 | #undef ss | |
2845 | #undef sn | |
2846 | #undef sgl | |
2847 | #undef slr | |
2848 | #undef clr | |
2849 | #undef clrs | |
2850 | #undef err | |
2851 | #undef sr | |
2852 | #undef ts | |
2853 | #undef shl | |
2854 | #undef shlr | |
2855 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2856 | struct bpstat_what retval; | |
2857 | ||
2858 | retval.call_dummy = 0; | |
2859 | for (; bs != NULL; bs = bs->next) | |
2860 | { | |
2861 | enum class bs_class = no_effect; | |
2862 | if (bs->breakpoint_at == NULL) | |
2863 | /* I suspect this can happen if it was a momentary breakpoint | |
2864 | which has since been deleted. */ | |
2865 | continue; | |
2866 | switch (bs->breakpoint_at->type) | |
2867 | { | |
2868 | case bp_none: | |
2869 | continue; | |
2870 | ||
2871 | case bp_breakpoint: | |
2872 | case bp_hardware_breakpoint: | |
2873 | case bp_until: | |
2874 | case bp_finish: | |
2875 | if (bs->stop) | |
2876 | { | |
2877 | if (bs->print) | |
2878 | bs_class = bp_noisy; | |
2879 | else | |
2880 | bs_class = bp_silent; | |
2881 | } | |
2882 | else | |
2883 | bs_class = bp_nostop; | |
2884 | break; | |
2885 | case bp_watchpoint: | |
2886 | case bp_hardware_watchpoint: | |
2887 | case bp_read_watchpoint: | |
2888 | case bp_access_watchpoint: | |
2889 | if (bs->stop) | |
2890 | { | |
2891 | if (bs->print) | |
2892 | bs_class = wp_noisy; | |
2893 | else | |
2894 | bs_class = wp_silent; | |
2895 | } | |
2896 | else | |
53a5351d JM |
2897 | /* There was a watchpoint, but we're not stopping. |
2898 | This requires no further action. */ | |
c906108c SS |
2899 | bs_class = no_effect; |
2900 | break; | |
2901 | case bp_longjmp: | |
2902 | bs_class = long_jump; | |
2903 | break; | |
2904 | case bp_longjmp_resume: | |
2905 | bs_class = long_resume; | |
2906 | break; | |
2907 | case bp_step_resume: | |
2908 | if (bs->stop) | |
2909 | { | |
2910 | bs_class = step_resume; | |
2911 | } | |
2912 | else | |
2913 | /* It is for the wrong frame. */ | |
2914 | bs_class = bp_nostop; | |
2915 | break; | |
2916 | case bp_through_sigtramp: | |
2917 | bs_class = through_sig; | |
2918 | break; | |
2919 | case bp_watchpoint_scope: | |
2920 | bs_class = bp_nostop; | |
2921 | break; | |
c5aa993b JM |
2922 | case bp_shlib_event: |
2923 | bs_class = shlib_event; | |
2924 | break; | |
c4093a6a JM |
2925 | case bp_thread_event: |
2926 | bs_class = bp_nostop; | |
2927 | break; | |
c5aa993b JM |
2928 | case bp_catch_load: |
2929 | case bp_catch_unload: | |
2930 | /* Only if this catchpoint triggered should we cause the | |
2931 | step-out-of-dld behaviour. Otherwise, we ignore this | |
2932 | catchpoint. */ | |
2933 | if (bs->stop) | |
2934 | bs_class = catch_shlib_event; | |
2935 | else | |
2936 | bs_class = no_effect; | |
2937 | break; | |
2938 | case bp_catch_fork: | |
2939 | case bp_catch_vfork: | |
2940 | case bp_catch_exec: | |
2941 | if (bs->stop) | |
2942 | { | |
2943 | if (bs->print) | |
2944 | bs_class = bp_noisy; | |
2945 | else | |
2946 | bs_class = bp_silent; | |
2947 | } | |
2948 | else | |
53a5351d JM |
2949 | /* There was a catchpoint, but we're not stopping. |
2950 | This requires no further action. */ | |
c5aa993b JM |
2951 | bs_class = no_effect; |
2952 | break; | |
2953 | case bp_catch_catch: | |
2954 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
2955 | bs_class = bp_nostop; | |
2956 | else if (bs->stop) | |
2957 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2958 | break; | |
2959 | case bp_catch_throw: | |
2960 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
2961 | bs_class = bp_nostop; | |
2962 | else if (bs->stop) | |
2963 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 2964 | break; |
c906108c | 2965 | case bp_call_dummy: |
53a5351d JM |
2966 | /* Make sure the action is stop (silent or noisy), |
2967 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
2968 | bs_class = bp_silent; |
2969 | retval.call_dummy = 1; | |
2970 | break; | |
2971 | } | |
c5aa993b | 2972 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
2973 | } |
2974 | retval.main_action = current_action; | |
2975 | return retval; | |
2976 | } | |
2977 | ||
2978 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
2979 | without hardware support). This isn't related to a specific bpstat, | |
2980 | just to things like whether watchpoints are set. */ | |
2981 | ||
c5aa993b | 2982 | int |
fba45db2 | 2983 | bpstat_should_step (void) |
c906108c SS |
2984 | { |
2985 | struct breakpoint *b; | |
2986 | ALL_BREAKPOINTS (b) | |
2987 | if (b->enable == enabled && b->type == bp_watchpoint) | |
c5aa993b | 2988 | return 1; |
c906108c SS |
2989 | return 0; |
2990 | } | |
2991 | ||
2992 | /* Nonzero if there are enabled hardware watchpoints. */ | |
2993 | int | |
fba45db2 | 2994 | bpstat_have_active_hw_watchpoints (void) |
c906108c SS |
2995 | { |
2996 | struct breakpoint *b; | |
2997 | ALL_BREAKPOINTS (b) | |
2998 | if ((b->enable == enabled) && | |
c5aa993b JM |
2999 | (b->inserted) && |
3000 | ((b->type == bp_hardware_watchpoint) || | |
3001 | (b->type == bp_read_watchpoint) || | |
3002 | (b->type == bp_access_watchpoint))) | |
3003 | return 1; | |
c906108c SS |
3004 | return 0; |
3005 | } | |
c906108c | 3006 | \f |
c5aa993b | 3007 | |
c906108c SS |
3008 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3009 | function returns another bpstat which contains only the catchpoints | |
3010 | on that first list, if any. */ | |
3011 | void | |
fba45db2 | 3012 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3013 | { |
3014 | struct bpstats root_bs[1]; | |
3015 | bpstat bs = root_bs; | |
3016 | struct breakpoint *ep; | |
3017 | char *dll_pathname; | |
3018 | ||
c906108c SS |
3019 | bpstat_clear (cp_list); |
3020 | root_bs->next = NULL; | |
c5aa993b JM |
3021 | |
3022 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3023 | { |
3024 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3025 | ep = ep_list->breakpoint_at; | |
3026 | if (ep == NULL) | |
c5aa993b JM |
3027 | break; |
3028 | if ((ep->type != bp_catch_load) && | |
3029 | (ep->type != bp_catch_unload) && | |
3030 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3031 | (ep->type != bp_catch_throw)) |
3032 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3033 | continue; |
3034 | ||
c906108c SS |
3035 | /* Yes; add it to the list. */ |
3036 | bs = bpstat_alloc (ep, bs); | |
3037 | *bs = *ep_list; | |
3038 | bs->next = NULL; | |
3039 | bs = root_bs->next; | |
c5aa993b | 3040 | |
c906108c SS |
3041 | #if defined(SOLIB_ADD) |
3042 | /* Also, for each triggered catchpoint, tag it with the name of | |
3043 | the library that caused this trigger. (We copy the name now, | |
3044 | because it's only guaranteed to be available NOW, when the | |
3045 | catchpoint triggers. Clients who may wish to know the name | |
3046 | later must get it from the catchpoint itself.) */ | |
3047 | if (ep->triggered_dll_pathname != NULL) | |
c5aa993b | 3048 | free (ep->triggered_dll_pathname); |
c906108c | 3049 | if (ep->type == bp_catch_load) |
c5aa993b | 3050 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c | 3051 | else |
c5aa993b | 3052 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c SS |
3053 | #else |
3054 | dll_pathname = NULL; | |
3055 | #endif | |
3056 | if (dll_pathname) | |
3057 | { | |
53a5351d JM |
3058 | ep->triggered_dll_pathname = (char *) |
3059 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3060 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3061 | } | |
3062 | else | |
3063 | ep->triggered_dll_pathname = NULL; | |
3064 | } | |
c5aa993b | 3065 | |
c906108c SS |
3066 | *cp_list = bs; |
3067 | } | |
3068 | ||
c4093a6a | 3069 | /* Print B to gdb_stdout. */ |
c906108c | 3070 | static void |
c4093a6a JM |
3071 | print_one_breakpoint (struct breakpoint *b, |
3072 | CORE_ADDR *last_addr) | |
c906108c | 3073 | { |
c906108c SS |
3074 | register struct command_line *l; |
3075 | register struct symbol *sym; | |
c4093a6a JM |
3076 | struct ep_type_description |
3077 | { | |
3078 | enum bptype type; | |
3079 | char *description; | |
3080 | }; | |
3081 | static struct ep_type_description bptypes[] = | |
c906108c | 3082 | { |
c5aa993b JM |
3083 | {bp_none, "?deleted?"}, |
3084 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3085 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3086 | {bp_until, "until"}, |
3087 | {bp_finish, "finish"}, | |
3088 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3089 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3090 | {bp_read_watchpoint, "read watchpoint"}, |
3091 | {bp_access_watchpoint, "acc watchpoint"}, | |
3092 | {bp_longjmp, "longjmp"}, | |
3093 | {bp_longjmp_resume, "longjmp resume"}, | |
3094 | {bp_step_resume, "step resume"}, | |
3095 | {bp_through_sigtramp, "sigtramp"}, | |
3096 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3097 | {bp_call_dummy, "call dummy"}, | |
3098 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3099 | {bp_thread_event, "thread events"}, |
c5aa993b JM |
3100 | {bp_catch_load, "catch load"}, |
3101 | {bp_catch_unload, "catch unload"}, | |
3102 | {bp_catch_fork, "catch fork"}, | |
3103 | {bp_catch_vfork, "catch vfork"}, | |
3104 | {bp_catch_exec, "catch exec"}, | |
3105 | {bp_catch_catch, "catch catch"}, | |
3106 | {bp_catch_throw, "catch throw"} | |
3107 | }; | |
c4093a6a | 3108 | |
c5aa993b JM |
3109 | static char *bpdisps[] = |
3110 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3111 | static char bpenables[] = "nynny"; |
c906108c | 3112 | char wrap_indent[80]; |
8b93c638 JM |
3113 | #ifdef UI_OUT |
3114 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
3115 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3116 | #endif | |
c906108c | 3117 | |
c4093a6a | 3118 | annotate_record (); |
8b93c638 JM |
3119 | #ifdef UI_OUT |
3120 | ui_out_list_begin (uiout, "bkpt"); | |
3121 | #endif | |
c4093a6a JM |
3122 | |
3123 | /* 1 */ | |
3124 | annotate_field (0); | |
8b93c638 JM |
3125 | #ifdef UI_OUT |
3126 | ui_out_field_int (uiout, "number", b->number); | |
3127 | #else | |
c4093a6a | 3128 | printf_filtered ("%-3d ", b->number); |
8b93c638 | 3129 | #endif |
c4093a6a JM |
3130 | |
3131 | /* 2 */ | |
3132 | annotate_field (1); | |
3133 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3134 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3135 | internal_error ("bptypes table does not describe type #%d.", | |
3136 | (int) b->type); | |
8b93c638 JM |
3137 | #ifdef UI_OUT |
3138 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3139 | #else | |
c4093a6a | 3140 | printf_filtered ("%-14s ", bptypes[(int) b->type].description); |
8b93c638 | 3141 | #endif |
c4093a6a JM |
3142 | |
3143 | /* 3 */ | |
3144 | annotate_field (2); | |
8b93c638 JM |
3145 | #ifdef UI_OUT |
3146 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); | |
3147 | #else | |
c4093a6a | 3148 | printf_filtered ("%-4s ", bpdisps[(int) b->disposition]); |
8b93c638 | 3149 | #endif |
c4093a6a JM |
3150 | |
3151 | /* 4 */ | |
3152 | annotate_field (3); | |
8b93c638 JM |
3153 | #ifdef UI_OUT |
3154 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable]); | |
3155 | ui_out_spaces (uiout, 2); | |
3156 | #else | |
c4093a6a | 3157 | printf_filtered ("%-3c ", bpenables[(int) b->enable]); |
8b93c638 | 3158 | #endif |
c4093a6a JM |
3159 | |
3160 | /* 5 and 6 */ | |
3161 | strcpy (wrap_indent, " "); | |
3162 | if (addressprint) | |
3163 | strcat (wrap_indent, " "); | |
3164 | switch (b->type) | |
c5aa993b | 3165 | { |
c4093a6a JM |
3166 | case bp_none: |
3167 | internal_error ("print_one_breakpoint: bp_none encountered\n"); | |
3168 | break; | |
c906108c | 3169 | |
c4093a6a JM |
3170 | case bp_watchpoint: |
3171 | case bp_hardware_watchpoint: | |
3172 | case bp_read_watchpoint: | |
3173 | case bp_access_watchpoint: | |
3174 | /* Field 4, the address, is omitted (which makes the columns | |
3175 | not line up too nicely with the headers, but the effect | |
3176 | is relatively readable). */ | |
8b93c638 JM |
3177 | #ifdef UI_OUT |
3178 | if (addressprint) | |
3179 | ui_out_field_skip (uiout, "addr"); | |
3180 | annotate_field (5); | |
3181 | print_expression (b->exp, stb->stream); | |
3182 | ui_out_field_stream (uiout, "what", stb); | |
3183 | #else | |
c4093a6a JM |
3184 | annotate_field (5); |
3185 | print_expression (b->exp, gdb_stdout); | |
8b93c638 | 3186 | #endif |
c4093a6a JM |
3187 | break; |
3188 | ||
3189 | case bp_catch_load: | |
3190 | case bp_catch_unload: | |
3191 | /* Field 4, the address, is omitted (which makes the columns | |
3192 | not line up too nicely with the headers, but the effect | |
3193 | is relatively readable). */ | |
8b93c638 JM |
3194 | #ifdef UI_OUT |
3195 | if (addressprint) | |
3196 | ui_out_field_skip (uiout, "addr"); | |
3197 | annotate_field (5); | |
3198 | if (b->dll_pathname == NULL) | |
3199 | { | |
3200 | ui_out_field_string (uiout, "what", "<any library>"); | |
3201 | ui_out_spaces (uiout, 1); | |
3202 | } | |
3203 | else | |
3204 | { | |
3205 | ui_out_text (uiout, "library \""); | |
3206 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3207 | ui_out_text (uiout, "\" "); | |
3208 | } | |
3209 | #else | |
c4093a6a JM |
3210 | annotate_field (5); |
3211 | if (b->dll_pathname == NULL) | |
3212 | printf_filtered ("<any library> "); | |
3213 | else | |
3214 | printf_filtered ("library \"%s\" ", b->dll_pathname); | |
8b93c638 | 3215 | #endif |
c4093a6a JM |
3216 | break; |
3217 | ||
3218 | case bp_catch_fork: | |
3219 | case bp_catch_vfork: | |
3220 | /* Field 4, the address, is omitted (which makes the columns | |
3221 | not line up too nicely with the headers, but the effect | |
3222 | is relatively readable). */ | |
8b93c638 JM |
3223 | #ifdef UI_OUT |
3224 | if (addressprint) | |
3225 | ui_out_field_skip (uiout, "addr"); | |
3226 | annotate_field (5); | |
3227 | if (b->forked_inferior_pid != 0) | |
3228 | { | |
3229 | ui_out_text (uiout, "process "); | |
3230 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3231 | ui_out_spaces (uiout, 1); | |
3232 | } | |
3233 | #else | |
c4093a6a JM |
3234 | annotate_field (5); |
3235 | if (b->forked_inferior_pid != 0) | |
3236 | printf_filtered ("process %d ", b->forked_inferior_pid); | |
3237 | break; | |
8b93c638 | 3238 | #endif |
c4093a6a JM |
3239 | |
3240 | case bp_catch_exec: | |
3241 | /* Field 4, the address, is omitted (which makes the columns | |
3242 | not line up too nicely with the headers, but the effect | |
3243 | is relatively readable). */ | |
8b93c638 JM |
3244 | #ifdef UI_OUT |
3245 | if (addressprint) | |
3246 | ui_out_field_skip (uiout, "addr"); | |
3247 | annotate_field (5); | |
3248 | if (b->exec_pathname != NULL) | |
3249 | { | |
3250 | ui_out_text (uiout, "program \""); | |
3251 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3252 | ui_out_text (uiout, "\" "); | |
3253 | } | |
3254 | #else | |
c4093a6a JM |
3255 | annotate_field (5); |
3256 | if (b->exec_pathname != NULL) | |
3257 | printf_filtered ("program \"%s\" ", b->exec_pathname); | |
8b93c638 | 3258 | #endif |
c4093a6a | 3259 | break; |
c906108c | 3260 | |
c4093a6a JM |
3261 | case bp_catch_catch: |
3262 | /* Field 4, the address, is omitted (which makes the columns | |
3263 | not line up too nicely with the headers, but the effect | |
3264 | is relatively readable). */ | |
8b93c638 JM |
3265 | #ifdef UI_OUT |
3266 | if (addressprint) | |
3267 | ui_out_field_skip (uiout, "addr"); | |
3268 | annotate_field (5); | |
3269 | ui_out_field_string (uiout, "what", "exception catch"); | |
3270 | ui_out_spaces (uiout, 1); | |
3271 | #else | |
c4093a6a JM |
3272 | annotate_field (5); |
3273 | printf_filtered ("exception catch "); | |
8b93c638 | 3274 | #endif |
c4093a6a | 3275 | break; |
c906108c | 3276 | |
c4093a6a JM |
3277 | case bp_catch_throw: |
3278 | /* Field 4, the address, is omitted (which makes the columns | |
3279 | not line up too nicely with the headers, but the effect | |
3280 | is relatively readable). */ | |
8b93c638 JM |
3281 | #ifdef UI_OUT |
3282 | if (addressprint) | |
3283 | ui_out_field_skip (uiout, "addr"); | |
3284 | annotate_field (5); | |
3285 | ui_out_field_string (uiout, "what", "exception throw"); | |
3286 | ui_out_spaces (uiout, 1); | |
3287 | #else | |
c4093a6a JM |
3288 | annotate_field (5); |
3289 | printf_filtered ("exception throw "); | |
8b93c638 | 3290 | #endif |
c4093a6a JM |
3291 | break; |
3292 | ||
3293 | case bp_breakpoint: | |
3294 | case bp_hardware_breakpoint: | |
3295 | case bp_until: | |
3296 | case bp_finish: | |
3297 | case bp_longjmp: | |
3298 | case bp_longjmp_resume: | |
3299 | case bp_step_resume: | |
3300 | case bp_through_sigtramp: | |
3301 | case bp_watchpoint_scope: | |
3302 | case bp_call_dummy: | |
3303 | case bp_shlib_event: | |
3304 | case bp_thread_event: | |
8b93c638 JM |
3305 | #ifdef UI_OUT |
3306 | if (addressprint) | |
3307 | { | |
3308 | annotate_field (4); | |
3309 | ui_out_field_core_addr (uiout, "addr", b->address); | |
3310 | } | |
3311 | annotate_field (5); | |
3312 | *last_addr = b->address; | |
3313 | if (b->source_file) | |
3314 | { | |
3315 | sym = find_pc_sect_function (b->address, b->section); | |
3316 | if (sym) | |
3317 | { | |
3318 | ui_out_text (uiout, "in "); | |
3319 | ui_out_field_string (uiout, "func", | |
3320 | SYMBOL_SOURCE_NAME (sym)); | |
3321 | ui_out_wrap_hint (uiout, wrap_indent); | |
3322 | ui_out_text (uiout, " at "); | |
3323 | } | |
3324 | ui_out_field_string (uiout, "file", b->source_file); | |
3325 | ui_out_text (uiout, ":"); | |
3326 | ui_out_field_int (uiout, "line", b->line_number); | |
3327 | } | |
3328 | else | |
3329 | { | |
3330 | print_address_symbolic (b->address, stb->stream, demangle, ""); | |
3331 | ui_out_field_stream (uiout, "at", stb); | |
3332 | } | |
3333 | #else | |
c5aa993b | 3334 | if (addressprint) |
c5aa993b | 3335 | { |
c4093a6a JM |
3336 | annotate_field (4); |
3337 | /* FIXME-32x64: need a print_address_numeric with | |
3338 | field width */ | |
3339 | printf_filtered | |
3340 | ("%s ", | |
3341 | local_hex_string_custom | |
3342 | ((unsigned long) b->address, "08l")); | |
3343 | } | |
3344 | annotate_field (5); | |
3345 | *last_addr = b->address; | |
3346 | if (b->source_file) | |
3347 | { | |
3348 | sym = find_pc_sect_function (b->address, b->section); | |
3349 | if (sym) | |
c5aa993b | 3350 | { |
c4093a6a JM |
3351 | fputs_filtered ("in ", gdb_stdout); |
3352 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
3353 | wrap_here (wrap_indent); | |
3354 | fputs_filtered (" at ", gdb_stdout); | |
c5aa993b | 3355 | } |
c4093a6a JM |
3356 | fputs_filtered (b->source_file, gdb_stdout); |
3357 | printf_filtered (":%d", b->line_number); | |
c5aa993b | 3358 | } |
c4093a6a JM |
3359 | else |
3360 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); | |
8b93c638 | 3361 | #endif |
c4093a6a JM |
3362 | break; |
3363 | } | |
3364 | ||
3365 | if (b->thread != -1) | |
3366 | { | |
8b93c638 JM |
3367 | #ifdef UI_OUT |
3368 | /* FIXME: This seems to be redundant and lost here; see the | |
3369 | "stop only in" line a little further down. */ | |
3370 | ui_out_text (uiout, " thread "); | |
3371 | ui_out_field_int (uiout, "thread", b->thread); | |
3372 | #else | |
c4093a6a | 3373 | printf_filtered (" thread %d", b->thread); |
8b93c638 | 3374 | #endif |
c4093a6a JM |
3375 | } |
3376 | ||
8b93c638 JM |
3377 | #ifdef UI_OUT |
3378 | ui_out_text (uiout, "\n"); | |
3379 | #else | |
c4093a6a | 3380 | printf_filtered ("\n"); |
8b93c638 | 3381 | #endif |
c4093a6a JM |
3382 | |
3383 | if (b->frame) | |
3384 | { | |
3385 | annotate_field (6); | |
8b93c638 JM |
3386 | #ifdef UI_OUT |
3387 | ui_out_text (uiout, "\tstop only in stack frame at "); | |
3388 | ui_out_field_core_addr (uiout, "frame", b->frame); | |
3389 | ui_out_text (uiout, "\n"); | |
3390 | #else | |
c4093a6a JM |
3391 | printf_filtered ("\tstop only in stack frame at "); |
3392 | print_address_numeric (b->frame, 1, gdb_stdout); | |
c5aa993b | 3393 | printf_filtered ("\n"); |
8b93c638 | 3394 | #endif |
c4093a6a JM |
3395 | } |
3396 | ||
3397 | if (b->cond) | |
3398 | { | |
3399 | annotate_field (7); | |
8b93c638 JM |
3400 | #ifdef UI_OUT |
3401 | ui_out_text (uiout, "\tstop only if "); | |
3402 | print_expression (b->cond, stb->stream); | |
3403 | ui_out_field_stream (uiout, "cond", stb); | |
3404 | ui_out_text (uiout, "\n"); | |
3405 | #else | |
c4093a6a JM |
3406 | printf_filtered ("\tstop only if "); |
3407 | print_expression (b->cond, gdb_stdout); | |
3408 | printf_filtered ("\n"); | |
8b93c638 | 3409 | #endif |
c4093a6a JM |
3410 | } |
3411 | ||
3412 | if (b->thread != -1) | |
3413 | { | |
3414 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3415 | #ifdef UI_OUT |
3416 | ui_out_text (uiout, "\tstop only in thread "); | |
3417 | ui_out_field_int (uiout, "thread", b->thread); | |
3418 | ui_out_text (uiout, "\n"); | |
3419 | #else | |
c4093a6a | 3420 | printf_filtered ("\tstop only in thread %d\n", b->thread); |
8b93c638 | 3421 | #endif |
c4093a6a JM |
3422 | } |
3423 | ||
3424 | if (show_breakpoint_hit_counts && b->hit_count) | |
3425 | { | |
3426 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3427 | #ifdef UI_OUT |
3428 | if (ep_is_catchpoint (b)) | |
3429 | ui_out_text (uiout, "\tcatchpoint"); | |
3430 | else | |
3431 | ui_out_text (uiout, "\tbreakpoint"); | |
3432 | ui_out_text (uiout, " already hit "); | |
3433 | ui_out_field_int (uiout, "times", b->hit_count); | |
3434 | if (b->hit_count == 1) | |
3435 | ui_out_text (uiout, " time\n"); | |
3436 | else | |
3437 | ui_out_text (uiout, " times\n"); | |
3438 | #else | |
c4093a6a JM |
3439 | if (ep_is_catchpoint (b)) |
3440 | printf_filtered ("\tcatchpoint"); | |
3441 | else | |
3442 | printf_filtered ("\tbreakpoint"); | |
3443 | printf_filtered (" already hit %d time%s\n", | |
3444 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
8b93c638 | 3445 | #endif |
c4093a6a JM |
3446 | } |
3447 | ||
fb40c209 AC |
3448 | #ifdef UI_OUT |
3449 | /* Output the count also if it is zero, but only if this is | |
3450 | mi. FIXME: Should have a better test for this. */ | |
3451 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
3452 | if (show_breakpoint_hit_counts && b->hit_count == 0) | |
3453 | ui_out_field_int (uiout, "times", b->hit_count); | |
3454 | #endif | |
8b93c638 | 3455 | |
c4093a6a JM |
3456 | if (b->ignore_count) |
3457 | { | |
3458 | annotate_field (8); | |
8b93c638 JM |
3459 | #ifdef UI_OUT |
3460 | ui_out_text (uiout, "\tignore next "); | |
3461 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3462 | ui_out_text (uiout, " hits\n"); | |
3463 | #else | |
c4093a6a | 3464 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); |
8b93c638 | 3465 | #endif |
c4093a6a JM |
3466 | } |
3467 | ||
3468 | if ((l = b->commands)) | |
3469 | { | |
3470 | annotate_field (9); | |
8b93c638 JM |
3471 | #ifdef UI_OUT |
3472 | ui_out_list_begin (uiout, "script"); | |
3473 | print_command_lines (uiout, l, 4); | |
3474 | ui_out_list_end (uiout); | |
3475 | #else | |
c4093a6a | 3476 | while (l) |
c5aa993b | 3477 | { |
c4093a6a JM |
3478 | print_command_line (l, 4, gdb_stdout); |
3479 | l = l->next; | |
c5aa993b | 3480 | } |
8b93c638 | 3481 | #endif |
c4093a6a | 3482 | } |
8b93c638 JM |
3483 | #ifdef UI_OUT |
3484 | ui_out_list_end (uiout); | |
3485 | do_cleanups (old_chain); | |
3486 | #endif | |
c4093a6a | 3487 | } |
c5aa993b | 3488 | |
c4093a6a JM |
3489 | struct captured_breakpoint_query_args |
3490 | { | |
3491 | int bnum; | |
3492 | }; | |
c5aa993b | 3493 | |
c4093a6a JM |
3494 | static int |
3495 | do_captured_breakpoint_query (void *data) | |
3496 | { | |
3497 | struct captured_breakpoint_query_args *args = data; | |
3498 | register struct breakpoint *b; | |
3499 | CORE_ADDR dummy_addr = 0; | |
3500 | ALL_BREAKPOINTS (b) | |
3501 | { | |
3502 | if (args->bnum == b->number) | |
c5aa993b | 3503 | { |
c4093a6a JM |
3504 | print_one_breakpoint (b, &dummy_addr); |
3505 | return GDB_RC_OK; | |
c5aa993b | 3506 | } |
c4093a6a JM |
3507 | } |
3508 | return GDB_RC_NONE; | |
3509 | } | |
c5aa993b | 3510 | |
c4093a6a JM |
3511 | enum gdb_rc |
3512 | gdb_breakpoint_query (/* output object, */ int bnum) | |
3513 | { | |
3514 | struct captured_breakpoint_query_args args; | |
3515 | args.bnum = bnum; | |
3516 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3517 | an error. */ | |
3518 | return catch_errors (do_captured_breakpoint_query, &args, | |
3519 | NULL, RETURN_MASK_ALL); | |
3520 | } | |
c5aa993b | 3521 | |
c4093a6a JM |
3522 | /* Print information on breakpoint number BNUM, or -1 if all. |
3523 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
3524 | is nonzero, process only watchpoints. */ | |
c906108c | 3525 | |
c4093a6a | 3526 | static void |
fba45db2 | 3527 | breakpoint_1 (int bnum, int allflag) |
c4093a6a JM |
3528 | { |
3529 | register struct breakpoint *b; | |
3530 | CORE_ADDR last_addr = (CORE_ADDR) -1; | |
3531 | int found_a_breakpoint = 0; | |
3532 | ||
8b93c638 JM |
3533 | #ifdef UI_OUT |
3534 | if (addressprint) | |
3535 | ui_out_table_begin (uiout, 6, "BreakpointTable"); | |
3536 | else | |
3537 | ui_out_table_begin (uiout, 5, "BreakpointTable"); | |
3538 | #endif /* UI_OUT */ | |
3539 | ||
c4093a6a JM |
3540 | ALL_BREAKPOINTS (b) |
3541 | if (bnum == -1 | |
3542 | || bnum == b->number) | |
3543 | { | |
3544 | /* We only print out user settable breakpoints unless the | |
3545 | allflag is set. */ | |
3546 | if (!allflag | |
3547 | && b->type != bp_breakpoint | |
3548 | && b->type != bp_catch_load | |
3549 | && b->type != bp_catch_unload | |
3550 | && b->type != bp_catch_fork | |
3551 | && b->type != bp_catch_vfork | |
3552 | && b->type != bp_catch_exec | |
3553 | && b->type != bp_catch_catch | |
3554 | && b->type != bp_catch_throw | |
3555 | && b->type != bp_hardware_breakpoint | |
3556 | && b->type != bp_watchpoint | |
3557 | && b->type != bp_read_watchpoint | |
3558 | && b->type != bp_access_watchpoint | |
3559 | && b->type != bp_hardware_watchpoint) | |
3560 | continue; | |
3561 | ||
3562 | if (!found_a_breakpoint++) | |
3563 | { | |
3564 | annotate_breakpoints_headers (); | |
8b93c638 JM |
3565 | #ifdef UI_OUT |
3566 | annotate_field (0); | |
3567 | ui_out_table_header (uiout, 3, ui_left, "Num"); /* 1 */ | |
3568 | annotate_field (1); | |
3569 | ui_out_table_header (uiout, 14, ui_left, "Type"); /* 2 */ | |
3570 | annotate_field (2); | |
3571 | ui_out_table_header (uiout, 4, ui_left, "Disp"); /* 3 */ | |
3572 | annotate_field (3); | |
3573 | ui_out_table_header (uiout, 3, ui_left, "Enb"); /* 4 */ | |
3574 | if (addressprint) | |
3575 | { | |
3576 | annotate_field (4); | |
3577 | ui_out_table_header (uiout, 10, ui_left, "Address"); /* 5 */ | |
3578 | } | |
3579 | annotate_field (5); | |
3580 | ui_out_table_header (uiout, 40, ui_noalign, "What"); /* 6 */ | |
3581 | ui_out_table_body (uiout); | |
3582 | #else | |
c4093a6a JM |
3583 | annotate_field (0); |
3584 | printf_filtered ("Num "); | |
3585 | annotate_field (1); | |
3586 | printf_filtered ("Type "); | |
3587 | annotate_field (2); | |
3588 | printf_filtered ("Disp "); | |
3589 | annotate_field (3); | |
3590 | printf_filtered ("Enb "); | |
3591 | if (addressprint) | |
3592 | { | |
3593 | annotate_field (4); | |
3594 | printf_filtered ("Address "); | |
3595 | } | |
3596 | annotate_field (5); | |
3597 | printf_filtered ("What\n"); | |
8b93c638 | 3598 | #endif /* UI_OUT */ |
c4093a6a JM |
3599 | annotate_breakpoints_table (); |
3600 | } | |
3601 | ||
3602 | print_one_breakpoint (b, &last_addr); | |
3603 | } | |
3604 | ||
c906108c SS |
3605 | if (!found_a_breakpoint) |
3606 | { | |
8b93c638 JM |
3607 | #ifdef UI_OUT |
3608 | if (bnum == -1) | |
3609 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3610 | else | |
3611 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3612 | bnum); | |
3613 | #else | |
c906108c | 3614 | if (bnum == -1) |
c5aa993b | 3615 | printf_filtered ("No breakpoints or watchpoints.\n"); |
c906108c | 3616 | else |
c5aa993b | 3617 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); |
8b93c638 | 3618 | #endif /* UI_OUT */ |
c906108c SS |
3619 | } |
3620 | else | |
c4093a6a JM |
3621 | { |
3622 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3623 | that a comparison of an unsigned with -1 is always false. */ | |
3624 | if (last_addr != (CORE_ADDR) -1) | |
3625 | set_next_address (last_addr); | |
3626 | } | |
c906108c | 3627 | |
8b93c638 JM |
3628 | #ifdef UI_OUT |
3629 | ui_out_table_end (uiout); | |
3630 | #endif /* UI_OUT */ | |
c4093a6a JM |
3631 | /* FIXME? Should this be moved up so that it is only called when |
3632 | there have been breakpoints? */ | |
c906108c SS |
3633 | annotate_breakpoints_table_end (); |
3634 | } | |
3635 | ||
3636 | /* ARGSUSED */ | |
3637 | static void | |
fba45db2 | 3638 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3639 | { |
3640 | int bnum = -1; | |
3641 | ||
3642 | if (bnum_exp) | |
3643 | bnum = parse_and_eval_address (bnum_exp); | |
3644 | ||
3645 | breakpoint_1 (bnum, 0); | |
3646 | } | |
3647 | ||
c906108c | 3648 | /* ARGSUSED */ |
7a292a7a | 3649 | static void |
fba45db2 | 3650 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3651 | { |
3652 | int bnum = -1; | |
3653 | ||
3654 | if (bnum_exp) | |
3655 | bnum = parse_and_eval_address (bnum_exp); | |
3656 | ||
3657 | breakpoint_1 (bnum, 1); | |
3658 | } | |
3659 | ||
c906108c SS |
3660 | /* Print a message describing any breakpoints set at PC. */ |
3661 | ||
3662 | static void | |
fba45db2 | 3663 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c SS |
3664 | { |
3665 | register int others = 0; | |
3666 | register struct breakpoint *b; | |
3667 | ||
3668 | ALL_BREAKPOINTS (b) | |
3669 | if (b->address == pc) | |
c5aa993b JM |
3670 | if (overlay_debugging == 0 || |
3671 | b->section == section) | |
3672 | others++; | |
c906108c SS |
3673 | if (others > 0) |
3674 | { | |
3675 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3676 | ALL_BREAKPOINTS (b) | |
3677 | if (b->address == pc) | |
c5aa993b JM |
3678 | if (overlay_debugging == 0 || |
3679 | b->section == section) | |
3680 | { | |
3681 | others--; | |
3682 | printf_filtered | |
3683 | ("%d%s%s ", | |
3684 | b->number, | |
53a5351d JM |
3685 | ((b->enable == disabled || |
3686 | b->enable == shlib_disabled || | |
c2c6d25f JM |
3687 | b->enable == call_disabled) ? " (disabled)" |
3688 | : b->enable == permanent ? " (permanent)" | |
3689 | : ""), | |
c5aa993b JM |
3690 | (others > 1) ? "," : ((others == 1) ? " and" : "")); |
3691 | } | |
c906108c SS |
3692 | printf_filtered ("also set at pc "); |
3693 | print_address_numeric (pc, 1, gdb_stdout); | |
3694 | printf_filtered (".\n"); | |
3695 | } | |
3696 | } | |
3697 | \f | |
3698 | /* Set the default place to put a breakpoint | |
3699 | for the `break' command with no arguments. */ | |
3700 | ||
3701 | void | |
fba45db2 KB |
3702 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3703 | int line) | |
c906108c SS |
3704 | { |
3705 | default_breakpoint_valid = valid; | |
3706 | default_breakpoint_address = addr; | |
3707 | default_breakpoint_symtab = symtab; | |
3708 | default_breakpoint_line = line; | |
3709 | } | |
3710 | ||
3711 | /* Rescan breakpoints at address ADDRESS, | |
3712 | marking the first one as "first" and any others as "duplicates". | |
c2c6d25f JM |
3713 | This is so that the bpt instruction is only inserted once. |
3714 | If we have a permanent breakpoint at ADDRESS, make that one | |
3715 | the official one, and the rest as duplicates. */ | |
c906108c SS |
3716 | |
3717 | static void | |
fba45db2 | 3718 | check_duplicates (CORE_ADDR address, asection *section) |
c906108c SS |
3719 | { |
3720 | register struct breakpoint *b; | |
3721 | register int count = 0; | |
c2c6d25f | 3722 | struct breakpoint *perm_bp = 0; |
c906108c SS |
3723 | |
3724 | if (address == 0) /* Watchpoints are uninteresting */ | |
3725 | return; | |
3726 | ||
3727 | ALL_BREAKPOINTS (b) | |
3728 | if (b->enable != disabled | |
3729 | && b->enable != shlib_disabled | |
3730 | && b->enable != call_disabled | |
3731 | && b->address == address | |
3732 | && (overlay_debugging == 0 || b->section == section)) | |
c5aa993b | 3733 | { |
c2c6d25f JM |
3734 | /* Have we found a permanent breakpoint? */ |
3735 | if (b->enable == permanent) | |
3736 | { | |
3737 | perm_bp = b; | |
3738 | break; | |
3739 | } | |
3740 | ||
c5aa993b JM |
3741 | count++; |
3742 | b->duplicate = count > 1; | |
3743 | } | |
c2c6d25f JM |
3744 | |
3745 | /* If we found a permanent breakpoint at this address, go over the | |
3746 | list again and declare all the other breakpoints there to be the | |
3747 | duplicates. */ | |
3748 | if (perm_bp) | |
3749 | { | |
3750 | perm_bp->duplicate = 0; | |
3751 | ||
3752 | /* Permanent breakpoint should always be inserted. */ | |
3753 | if (! perm_bp->inserted) | |
3754 | internal_error ("allegedly permanent breakpoint is not " | |
3755 | "actually inserted"); | |
3756 | ||
3757 | ALL_BREAKPOINTS (b) | |
3758 | if (b != perm_bp) | |
3759 | { | |
3760 | if (b->inserted) | |
3761 | internal_error ("another breakpoint was inserted on top of " | |
3762 | "a permanent breakpoint"); | |
3763 | ||
3764 | if (b->enable != disabled | |
3765 | && b->enable != shlib_disabled | |
3766 | && b->enable != call_disabled | |
3767 | && b->address == address | |
3768 | && (overlay_debugging == 0 || b->section == section)) | |
3769 | b->duplicate = 1; | |
3770 | } | |
3771 | } | |
c906108c SS |
3772 | } |
3773 | ||
3774 | /* Low level routine to set a breakpoint. | |
3775 | Takes as args the three things that every breakpoint must have. | |
3776 | Returns the breakpoint object so caller can set other things. | |
3777 | Does not set the breakpoint number! | |
3778 | Does not print anything. | |
3779 | ||
3780 | ==> This routine should not be called if there is a chance of later | |
3781 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
3782 | your arguments BEFORE calling this routine! */ | |
3783 | ||
3784 | struct breakpoint * | |
fba45db2 | 3785 | set_raw_breakpoint (struct symtab_and_line sal) |
c906108c SS |
3786 | { |
3787 | register struct breakpoint *b, *b1; | |
3788 | ||
3789 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3790 | memset (b, 0, sizeof (*b)); | |
3791 | b->address = sal.pc; | |
3792 | if (sal.symtab == NULL) | |
3793 | b->source_file = NULL; | |
3794 | else | |
3795 | b->source_file = savestring (sal.symtab->filename, | |
3796 | strlen (sal.symtab->filename)); | |
3797 | b->section = sal.section; | |
3798 | b->language = current_language->la_language; | |
3799 | b->input_radix = input_radix; | |
3800 | b->thread = -1; | |
3801 | b->line_number = sal.line; | |
3802 | b->enable = enabled; | |
3803 | b->next = 0; | |
3804 | b->silent = 0; | |
3805 | b->ignore_count = 0; | |
3806 | b->commands = NULL; | |
3807 | b->frame = 0; | |
3808 | b->dll_pathname = NULL; | |
3809 | b->triggered_dll_pathname = NULL; | |
3810 | b->forked_inferior_pid = 0; | |
3811 | b->exec_pathname = NULL; | |
3812 | ||
3813 | /* Add this breakpoint to the end of the chain | |
3814 | so that a list of breakpoints will come out in order | |
3815 | of increasing numbers. */ | |
3816 | ||
3817 | b1 = breakpoint_chain; | |
3818 | if (b1 == 0) | |
3819 | breakpoint_chain = b; | |
3820 | else | |
3821 | { | |
3822 | while (b1->next) | |
3823 | b1 = b1->next; | |
3824 | b1->next = b; | |
3825 | } | |
3826 | ||
3827 | check_duplicates (sal.pc, sal.section); | |
3828 | breakpoints_changed (); | |
3829 | ||
3830 | return b; | |
3831 | } | |
3832 | ||
c2c6d25f JM |
3833 | |
3834 | /* Note that the breakpoint object B describes a permanent breakpoint | |
3835 | instruction, hard-wired into the inferior's code. */ | |
3836 | void | |
3837 | make_breakpoint_permanent (struct breakpoint *b) | |
3838 | { | |
3839 | b->enable = permanent; | |
3840 | ||
3841 | /* By definition, permanent breakpoints are already present in the code. */ | |
3842 | b->inserted = 1; | |
3843 | } | |
3844 | ||
c906108c SS |
3845 | #ifdef GET_LONGJMP_TARGET |
3846 | ||
3847 | static void | |
fba45db2 | 3848 | create_longjmp_breakpoint (char *func_name) |
c906108c SS |
3849 | { |
3850 | struct symtab_and_line sal; | |
3851 | struct breakpoint *b; | |
3852 | ||
c5aa993b | 3853 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3854 | if (func_name != NULL) |
3855 | { | |
3856 | struct minimal_symbol *m; | |
3857 | ||
53a5351d JM |
3858 | m = lookup_minimal_symbol_text (func_name, NULL, |
3859 | (struct objfile *) NULL); | |
c906108c SS |
3860 | if (m) |
3861 | sal.pc = SYMBOL_VALUE_ADDRESS (m); | |
3862 | else | |
3863 | return; | |
3864 | } | |
3865 | sal.section = find_pc_overlay (sal.pc); | |
3866 | b = set_raw_breakpoint (sal); | |
c5aa993b JM |
3867 | if (!b) |
3868 | return; | |
c906108c SS |
3869 | |
3870 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; | |
3871 | b->disposition = donttouch; | |
3872 | b->enable = disabled; | |
3873 | b->silent = 1; | |
3874 | if (func_name) | |
c5aa993b | 3875 | b->addr_string = strsave (func_name); |
c906108c SS |
3876 | b->number = internal_breakpoint_number--; |
3877 | } | |
3878 | ||
c5aa993b | 3879 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
c906108c | 3880 | |
53a5351d JM |
3881 | /* Call this routine when stepping and nexting to enable a breakpoint |
3882 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3883 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3884 | ||
3885 | void | |
fba45db2 | 3886 | enable_longjmp_breakpoint (void) |
c906108c SS |
3887 | { |
3888 | register struct breakpoint *b; | |
3889 | ||
3890 | ALL_BREAKPOINTS (b) | |
3891 | if (b->type == bp_longjmp) | |
c5aa993b JM |
3892 | { |
3893 | b->enable = enabled; | |
3894 | check_duplicates (b->address, b->section); | |
3895 | } | |
c906108c SS |
3896 | } |
3897 | ||
3898 | void | |
fba45db2 | 3899 | disable_longjmp_breakpoint (void) |
c906108c SS |
3900 | { |
3901 | register struct breakpoint *b; | |
3902 | ||
3903 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3904 | if (b->type == bp_longjmp |
c906108c | 3905 | || b->type == bp_longjmp_resume) |
c5aa993b JM |
3906 | { |
3907 | b->enable = disabled; | |
3908 | check_duplicates (b->address, b->section); | |
3909 | } | |
c906108c SS |
3910 | } |
3911 | ||
c4093a6a | 3912 | struct breakpoint * |
fba45db2 | 3913 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
3914 | { |
3915 | struct breakpoint *b; | |
3916 | struct symtab_and_line sal; | |
3917 | char addr_string[80]; /* Surely an addr can't be longer than that. */ | |
3918 | ||
3919 | INIT_SAL (&sal); /* initialize to zeroes */ | |
3920 | sal.pc = address; | |
3921 | sal.section = find_pc_overlay (sal.pc); | |
3922 | if ((b = set_raw_breakpoint (sal)) == NULL) | |
3923 | return NULL; | |
3924 | ||
3925 | b->number = internal_breakpoint_number--; | |
3926 | b->disposition = donttouch; | |
3927 | b->type = bp_thread_event; /* XXX: do we need a new type? | |
3928 | bp_thread_event */ | |
3929 | b->enable = enabled; | |
3930 | /* addr_string has to be used or breakpoint_re_set will delete me. */ | |
3931 | sprintf (addr_string, "*0x%s", paddr (b->address)); | |
3932 | b->addr_string = strsave (addr_string); | |
3933 | ||
3934 | return b; | |
3935 | } | |
3936 | ||
3937 | void | |
3938 | remove_thread_event_breakpoints (void) | |
3939 | { | |
3940 | struct breakpoint *b, *temp; | |
3941 | ||
3942 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3943 | if (b->type == bp_thread_event) | |
3944 | delete_breakpoint (b); | |
3945 | } | |
3946 | ||
c906108c SS |
3947 | #ifdef SOLIB_ADD |
3948 | void | |
fba45db2 | 3949 | remove_solib_event_breakpoints (void) |
c906108c SS |
3950 | { |
3951 | register struct breakpoint *b, *temp; | |
3952 | ||
3953 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3954 | if (b->type == bp_shlib_event) | |
c5aa993b | 3955 | delete_breakpoint (b); |
c906108c SS |
3956 | } |
3957 | ||
c2c6d25f | 3958 | struct breakpoint * |
fba45db2 | 3959 | create_solib_event_breakpoint (CORE_ADDR address) |
c906108c SS |
3960 | { |
3961 | struct breakpoint *b; | |
3962 | struct symtab_and_line sal; | |
3963 | ||
c5aa993b | 3964 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3965 | sal.pc = address; |
3966 | sal.section = find_pc_overlay (sal.pc); | |
3967 | b = set_raw_breakpoint (sal); | |
3968 | b->number = internal_breakpoint_number--; | |
3969 | b->disposition = donttouch; | |
3970 | b->type = bp_shlib_event; | |
c2c6d25f JM |
3971 | |
3972 | return b; | |
c906108c SS |
3973 | } |
3974 | ||
104c1213 JM |
3975 | /* Disable any breakpoints that are on code in shared libraries. Only |
3976 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
3977 | ||
c906108c | 3978 | void |
fba45db2 | 3979 | disable_breakpoints_in_shlibs (int silent) |
c906108c | 3980 | { |
c5aa993b JM |
3981 | struct breakpoint *b; |
3982 | int disabled_shlib_breaks = 0; | |
c906108c SS |
3983 | |
3984 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
3985 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3986 | { |
c906108c | 3987 | #if defined (PC_SOLIB) |
c5aa993b JM |
3988 | if (((b->type == bp_breakpoint) || |
3989 | (b->type == bp_hardware_breakpoint)) && | |
104c1213 | 3990 | b->enable == enabled && |
c5aa993b JM |
3991 | !b->duplicate && |
3992 | PC_SOLIB (b->address)) | |
3993 | { | |
3994 | b->enable = shlib_disabled; | |
3995 | if (!silent) | |
3996 | { | |
3997 | if (!disabled_shlib_breaks) | |
3998 | { | |
3999 | target_terminal_ours_for_output (); | |
53a5351d | 4000 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
4001 | } |
4002 | disabled_shlib_breaks = 1; | |
53a5351d | 4003 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
4004 | } |
4005 | } | |
c906108c | 4006 | #endif |
c5aa993b | 4007 | } |
c906108c SS |
4008 | } |
4009 | ||
4010 | /* Try to reenable any breakpoints in shared libraries. */ | |
4011 | void | |
fba45db2 | 4012 | re_enable_breakpoints_in_shlibs (void) |
c906108c SS |
4013 | { |
4014 | struct breakpoint *b; | |
4015 | ||
4016 | ALL_BREAKPOINTS (b) | |
4017 | if (b->enable == shlib_disabled) | |
c5aa993b JM |
4018 | { |
4019 | char buf[1]; | |
c906108c | 4020 | |
c5aa993b JM |
4021 | /* Do not reenable the breakpoint if the shared library |
4022 | is still not mapped in. */ | |
4023 | if (target_read_memory (b->address, buf, 1) == 0) | |
4024 | b->enable = enabled; | |
4025 | } | |
c906108c SS |
4026 | } |
4027 | ||
4028 | #endif | |
4029 | ||
4030 | static void | |
fba45db2 KB |
4031 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4032 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4033 | { |
c5aa993b | 4034 | struct breakpoint *b; |
c906108c | 4035 | struct symtabs_and_lines sals; |
c5aa993b JM |
4036 | struct cleanup *old_chain; |
4037 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4038 | char *addr_start = hookname; |
4039 | char *addr_end = NULL; | |
4040 | char **canonical = (char **) NULL; | |
4041 | int thread = -1; /* All threads. */ | |
4042 | ||
c906108c SS |
4043 | /* Set a breakpoint on the specified hook. */ |
4044 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
4045 | addr_end = hookname; | |
c5aa993b | 4046 | |
c906108c SS |
4047 | if (sals.nelts == 0) |
4048 | { | |
4049 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4050 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4051 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4052 | return; | |
4053 | } | |
4054 | if (sals.nelts != 1) | |
4055 | { | |
53a5351d | 4056 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4057 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4058 | return; | |
4059 | } | |
4060 | ||
53a5351d JM |
4061 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4062 | in case the following errors out. */ | |
c906108c | 4063 | old_chain = make_cleanup (free, sals.sals); |
c5aa993b | 4064 | if (canonical != (char **) NULL) |
c906108c SS |
4065 | { |
4066 | make_cleanup (free, canonical); | |
4067 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
4068 | if (canonical[0] != NULL) | |
c5aa993b | 4069 | make_cleanup (free, canonical[0]); |
c906108c | 4070 | } |
c5aa993b | 4071 | |
c906108c | 4072 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4073 | |
c906108c | 4074 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4075 | if (canonical != (char **) NULL) |
c906108c | 4076 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4077 | |
c906108c SS |
4078 | b = set_raw_breakpoint (sals.sals[0]); |
4079 | set_breakpoint_count (breakpoint_count + 1); | |
4080 | b->number = breakpoint_count; | |
4081 | b->cond = NULL; | |
53a5351d JM |
4082 | b->cond_string = (cond_string == NULL) ? |
4083 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4084 | b->thread = thread; |
c5aa993b JM |
4085 | |
4086 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4087 | b->addr_string = canonical[0]; |
4088 | else if (addr_start) | |
4089 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4090 | |
c906108c SS |
4091 | b->enable = enabled; |
4092 | b->disposition = tempflag ? del : donttouch; | |
c5aa993b | 4093 | |
c906108c SS |
4094 | if (dll_pathname == NULL) |
4095 | b->dll_pathname = NULL; | |
4096 | else | |
4097 | { | |
4098 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4099 | strcpy (b->dll_pathname, dll_pathname); | |
4100 | } | |
4101 | b->type = bp_kind; | |
c5aa993b | 4102 | |
c906108c SS |
4103 | mention (b); |
4104 | do_cleanups (old_chain); | |
4105 | } | |
4106 | ||
4107 | void | |
fba45db2 KB |
4108 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4109 | char *dll_pathname, char *cond_string) | |
c906108c | 4110 | { |
53a5351d JM |
4111 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4112 | cond_string, bp_catch_load); | |
c906108c SS |
4113 | } |
4114 | ||
4115 | void | |
fba45db2 KB |
4116 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4117 | char *dll_pathname, char *cond_string) | |
c906108c | 4118 | { |
53a5351d JM |
4119 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4120 | cond_string, bp_catch_unload); | |
c906108c SS |
4121 | } |
4122 | ||
4123 | static void | |
fba45db2 KB |
4124 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4125 | enum bptype bp_kind) | |
c906108c | 4126 | { |
c5aa993b JM |
4127 | struct symtab_and_line sal; |
4128 | struct breakpoint *b; | |
4129 | int thread = -1; /* All threads. */ | |
4130 | ||
4131 | INIT_SAL (&sal); | |
c906108c SS |
4132 | sal.pc = 0; |
4133 | sal.symtab = NULL; | |
4134 | sal.line = 0; | |
c5aa993b | 4135 | |
c906108c SS |
4136 | b = set_raw_breakpoint (sal); |
4137 | set_breakpoint_count (breakpoint_count + 1); | |
4138 | b->number = breakpoint_count; | |
4139 | b->cond = NULL; | |
53a5351d JM |
4140 | b->cond_string = (cond_string == NULL) ? |
4141 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4142 | b->thread = thread; |
4143 | b->addr_string = NULL; | |
4144 | b->enable = enabled; | |
4145 | b->disposition = tempflag ? del : donttouch; | |
4146 | b->forked_inferior_pid = 0; | |
c5aa993b | 4147 | |
c906108c | 4148 | b->type = bp_kind; |
c5aa993b | 4149 | |
c906108c SS |
4150 | mention (b); |
4151 | } | |
4152 | ||
4153 | void | |
fba45db2 | 4154 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4155 | { |
4156 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4157 | } | |
c5aa993b | 4158 | |
c906108c | 4159 | void |
fba45db2 | 4160 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4161 | { |
4162 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4163 | } | |
4164 | ||
4165 | void | |
fba45db2 | 4166 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4167 | { |
c5aa993b JM |
4168 | struct symtab_and_line sal; |
4169 | struct breakpoint *b; | |
4170 | int thread = -1; /* All threads. */ | |
c906108c | 4171 | |
c5aa993b | 4172 | INIT_SAL (&sal); |
c906108c SS |
4173 | sal.pc = 0; |
4174 | sal.symtab = NULL; | |
4175 | sal.line = 0; | |
4176 | ||
4177 | b = set_raw_breakpoint (sal); | |
4178 | set_breakpoint_count (breakpoint_count + 1); | |
4179 | b->number = breakpoint_count; | |
4180 | b->cond = NULL; | |
53a5351d JM |
4181 | b->cond_string = (cond_string == NULL) ? |
4182 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4183 | b->thread = thread; |
4184 | b->addr_string = NULL; | |
4185 | b->enable = enabled; | |
4186 | b->disposition = tempflag ? del : donttouch; | |
4187 | ||
4188 | b->type = bp_catch_exec; | |
4189 | ||
4190 | mention (b); | |
4191 | } | |
4192 | ||
4193 | static int | |
fba45db2 | 4194 | hw_breakpoint_used_count (void) |
c906108c SS |
4195 | { |
4196 | register struct breakpoint *b; | |
4197 | int i = 0; | |
4198 | ||
4199 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4200 | { |
4201 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
4202 | i++; | |
4203 | } | |
c906108c SS |
4204 | |
4205 | return i; | |
4206 | } | |
4207 | ||
4208 | static int | |
fba45db2 | 4209 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c SS |
4210 | { |
4211 | register struct breakpoint *b; | |
4212 | int i = 0; | |
4213 | ||
4214 | *other_type_used = 0; | |
4215 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4216 | { |
4217 | if (b->enable == enabled) | |
4218 | { | |
4219 | if (b->type == type) | |
4220 | i++; | |
4221 | else if ((b->type == bp_hardware_watchpoint || | |
4222 | b->type == bp_read_watchpoint || | |
4223 | b->type == bp_access_watchpoint) | |
4224 | && b->enable == enabled) | |
4225 | *other_type_used = 1; | |
4226 | } | |
4227 | } | |
c906108c SS |
4228 | return i; |
4229 | } | |
4230 | ||
53a5351d JM |
4231 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4232 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4233 | |
53a5351d JM |
4234 | FIXME - This ought to be done by setting a temporary breakpoint |
4235 | that gets deleted automatically... */ | |
c906108c SS |
4236 | |
4237 | void | |
fba45db2 | 4238 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_info *frame) |
c906108c SS |
4239 | { |
4240 | register struct breakpoint *b; | |
4241 | ||
4242 | ALL_BREAKPOINTS (b) | |
4243 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
4244 | { |
4245 | b->address = pc; | |
4246 | b->enable = enabled; | |
4247 | if (frame != NULL) | |
4248 | b->frame = frame->frame; | |
4249 | else | |
4250 | b->frame = 0; | |
4251 | check_duplicates (b->address, b->section); | |
4252 | return; | |
4253 | } | |
c906108c SS |
4254 | } |
4255 | ||
4256 | void | |
fba45db2 | 4257 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4258 | { |
c5aa993b | 4259 | struct breakpoint *b; |
c906108c SS |
4260 | |
4261 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4262 | { |
4263 | if (((b->type == bp_watchpoint) | |
4264 | || (b->type == bp_hardware_watchpoint) | |
4265 | || (b->type == bp_read_watchpoint) | |
4266 | || (b->type == bp_access_watchpoint) | |
4267 | || ep_is_exception_catchpoint (b)) | |
4268 | && (b->enable == enabled)) | |
4269 | { | |
4270 | b->enable = call_disabled; | |
4271 | check_duplicates (b->address, b->section); | |
4272 | } | |
4273 | } | |
c906108c SS |
4274 | } |
4275 | ||
4276 | void | |
fba45db2 | 4277 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4278 | { |
c5aa993b | 4279 | struct breakpoint *b; |
c906108c SS |
4280 | |
4281 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4282 | { |
4283 | if (((b->type == bp_watchpoint) | |
4284 | || (b->type == bp_hardware_watchpoint) | |
4285 | || (b->type == bp_read_watchpoint) | |
4286 | || (b->type == bp_access_watchpoint) | |
4287 | || ep_is_exception_catchpoint (b)) | |
4288 | && (b->enable == call_disabled)) | |
4289 | { | |
4290 | b->enable = enabled; | |
4291 | check_duplicates (b->address, b->section); | |
4292 | } | |
4293 | } | |
c906108c SS |
4294 | } |
4295 | ||
4296 | ||
4297 | /* Set a breakpoint that will evaporate an end of command | |
4298 | at address specified by SAL. | |
4299 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4300 | ||
4301 | struct breakpoint * | |
fba45db2 KB |
4302 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_info *frame, |
4303 | enum bptype type) | |
c906108c SS |
4304 | { |
4305 | register struct breakpoint *b; | |
4306 | b = set_raw_breakpoint (sal); | |
4307 | b->type = type; | |
4308 | b->enable = enabled; | |
4309 | b->disposition = donttouch; | |
4310 | b->frame = (frame ? frame->frame : 0); | |
4311 | ||
4312 | /* If we're debugging a multi-threaded program, then we | |
4313 | want momentary breakpoints to be active in only a | |
4314 | single thread of control. */ | |
4315 | if (in_thread_list (inferior_pid)) | |
4316 | b->thread = pid_to_thread_id (inferior_pid); | |
4317 | ||
4318 | return b; | |
4319 | } | |
c906108c | 4320 | \f |
c5aa993b | 4321 | |
c906108c SS |
4322 | /* Tell the user we have just set a breakpoint B. */ |
4323 | ||
4324 | static void | |
fba45db2 | 4325 | mention (struct breakpoint *b) |
c906108c SS |
4326 | { |
4327 | int say_where = 0; | |
8b93c638 JM |
4328 | #ifdef UI_OUT |
4329 | struct cleanup *old_chain; | |
4330 | struct ui_stream *stb; | |
4331 | ||
4332 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4333 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 4334 | #endif /* UI_OUT */ |
c906108c SS |
4335 | |
4336 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4337 | watchpoint) other than breakpoint creation. It should be possible to | |
4338 | clean this up and at the same time replace the random calls to | |
4339 | breakpoint_changed with this hook, as has already been done for | |
4340 | delete_breakpoint_hook and so on. */ | |
4341 | if (create_breakpoint_hook) | |
4342 | create_breakpoint_hook (b); | |
104c1213 | 4343 | breakpoint_create_event (b->number); |
c906108c SS |
4344 | |
4345 | switch (b->type) | |
4346 | { | |
4347 | case bp_none: | |
4348 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4349 | break; | |
8b93c638 JM |
4350 | #ifdef UI_OUT |
4351 | case bp_watchpoint: | |
4352 | ui_out_text (uiout, "Watchpoint "); | |
4353 | ui_out_list_begin (uiout, "wpt"); | |
4354 | ui_out_field_int (uiout, "number", b->number); | |
4355 | ui_out_text (uiout, ": "); | |
4356 | print_expression (b->exp, stb->stream); | |
4357 | ui_out_field_stream (uiout, "exp", stb); | |
4358 | ui_out_list_end (uiout); | |
4359 | break; | |
4360 | case bp_hardware_watchpoint: | |
4361 | ui_out_text (uiout, "Hardware watchpoint "); | |
4362 | ui_out_list_begin (uiout, "wpt"); | |
4363 | ui_out_field_int (uiout, "number", b->number); | |
4364 | ui_out_text (uiout, ": "); | |
4365 | print_expression (b->exp, stb->stream); | |
4366 | ui_out_field_stream (uiout, "exp", stb); | |
4367 | ui_out_list_end (uiout); | |
4368 | break; | |
4369 | #else | |
c906108c SS |
4370 | case bp_watchpoint: |
4371 | printf_filtered ("Watchpoint %d: ", b->number); | |
4372 | print_expression (b->exp, gdb_stdout); | |
4373 | break; | |
4374 | case bp_hardware_watchpoint: | |
4375 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
4376 | print_expression (b->exp, gdb_stdout); | |
4377 | break; | |
8b93c638 JM |
4378 | #endif |
4379 | #ifdef UI_OUT | |
4380 | case bp_read_watchpoint: | |
4381 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4382 | ui_out_list_begin (uiout, "hw-rwpt"); | |
4383 | ui_out_field_int (uiout, "number", b->number); | |
4384 | ui_out_text (uiout, ": "); | |
4385 | print_expression (b->exp, stb->stream); | |
4386 | ui_out_field_stream (uiout, "exp", stb); | |
4387 | ui_out_list_end (uiout); | |
4388 | break; | |
4389 | case bp_access_watchpoint: | |
4390 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4391 | ui_out_list_begin (uiout, "hw-awpt"); | |
4392 | ui_out_field_int (uiout, "number", b->number); | |
4393 | ui_out_text (uiout, ": "); | |
4394 | print_expression (b->exp, stb->stream); | |
4395 | ui_out_field_stream (uiout, "exp", stb); | |
4396 | ui_out_list_end (uiout); | |
4397 | break; | |
4398 | #else | |
c906108c SS |
4399 | case bp_read_watchpoint: |
4400 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
4401 | print_expression (b->exp, gdb_stdout); | |
4402 | break; | |
4403 | case bp_access_watchpoint: | |
53a5351d JM |
4404 | printf_filtered ("Hardware access (read/write) watchpoint %d: ", |
4405 | b->number); | |
c906108c SS |
4406 | print_expression (b->exp, gdb_stdout); |
4407 | break; | |
8b93c638 | 4408 | #endif |
c906108c | 4409 | case bp_breakpoint: |
fb40c209 AC |
4410 | #ifdef UI_OUT |
4411 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4412 | { | |
4413 | say_where = 0; | |
4414 | break; | |
4415 | } | |
4416 | #endif | |
c906108c SS |
4417 | printf_filtered ("Breakpoint %d", b->number); |
4418 | say_where = 1; | |
4419 | break; | |
4420 | case bp_hardware_breakpoint: | |
fb40c209 AC |
4421 | #ifdef UI_OUT |
4422 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4423 | { | |
4424 | say_where = 0; | |
4425 | break; | |
4426 | } | |
4427 | #endif | |
c906108c SS |
4428 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
4429 | say_where = 1; | |
4430 | break; | |
4431 | case bp_catch_load: | |
4432 | case bp_catch_unload: | |
4433 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
4434 | b->number, |
4435 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
4436 | (b->dll_pathname != NULL) ? |
4437 | b->dll_pathname : "<any library>"); | |
c906108c SS |
4438 | break; |
4439 | case bp_catch_fork: | |
4440 | case bp_catch_vfork: | |
4441 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4442 | b->number, |
4443 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
4444 | break; |
4445 | case bp_catch_exec: | |
4446 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 4447 | b->number); |
c906108c SS |
4448 | break; |
4449 | case bp_catch_catch: | |
4450 | case bp_catch_throw: | |
4451 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4452 | b->number, |
4453 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
4454 | break; |
4455 | ||
4456 | case bp_until: | |
4457 | case bp_finish: | |
4458 | case bp_longjmp: | |
4459 | case bp_longjmp_resume: | |
4460 | case bp_step_resume: | |
4461 | case bp_through_sigtramp: | |
4462 | case bp_call_dummy: | |
4463 | case bp_watchpoint_scope: | |
4464 | case bp_shlib_event: | |
c4093a6a | 4465 | case bp_thread_event: |
c906108c SS |
4466 | break; |
4467 | } | |
4468 | if (say_where) | |
4469 | { | |
4470 | if (addressprint || b->source_file == NULL) | |
4471 | { | |
4472 | printf_filtered (" at "); | |
4473 | print_address_numeric (b->address, 1, gdb_stdout); | |
4474 | } | |
4475 | if (b->source_file) | |
4476 | printf_filtered (": file %s, line %d.", | |
4477 | b->source_file, b->line_number); | |
c5aa993b JM |
4478 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, b, 1)); |
4479 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
c906108c | 4480 | } |
8b93c638 JM |
4481 | #ifdef UI_OUT |
4482 | do_cleanups (old_chain); | |
fb40c209 AC |
4483 | #endif |
4484 | #ifdef UI_OUT | |
4485 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4486 | return; | |
8b93c638 | 4487 | #endif |
c906108c SS |
4488 | printf_filtered ("\n"); |
4489 | } | |
c906108c | 4490 | \f |
c5aa993b | 4491 | |
c3f6f71d JM |
4492 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4493 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4494 | COND[i] and COND_STRING[i] values. | |
4495 | ||
4496 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4497 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4498 | array contents). If the function fails (error() is called), the | |
4499 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4500 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4501 | |
4502 | static void | |
c3f6f71d JM |
4503 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4504 | struct expression **cond, char **cond_string, | |
4505 | enum bptype type, enum bpdisp disposition, | |
4506 | int thread, int ignore_count, int from_tty) | |
c906108c | 4507 | { |
c3f6f71d JM |
4508 | if (type == bp_hardware_breakpoint) |
4509 | { | |
4510 | int i = hw_breakpoint_used_count (); | |
4511 | int target_resources_ok = | |
4512 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4513 | i + sals.nelts, 0); | |
4514 | if (target_resources_ok == 0) | |
4515 | error ("No hardware breakpoint support in the target."); | |
4516 | else if (target_resources_ok < 0) | |
4517 | error ("Hardware breakpoints used exceeds limit."); | |
4518 | } | |
c906108c | 4519 | |
c3f6f71d JM |
4520 | /* Now set all the breakpoints. */ |
4521 | { | |
4522 | int i; | |
4523 | for (i = 0; i < sals.nelts; i++) | |
4524 | { | |
4525 | struct breakpoint *b; | |
4526 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4527 | |
c3f6f71d JM |
4528 | if (from_tty) |
4529 | describe_other_breakpoints (sal.pc, sal.section); | |
4530 | ||
4531 | b = set_raw_breakpoint (sal); | |
4532 | set_breakpoint_count (breakpoint_count + 1); | |
4533 | b->number = breakpoint_count; | |
4534 | b->type = type; | |
4535 | b->cond = cond[i]; | |
4536 | b->thread = thread; | |
4537 | b->addr_string = addr_string[i]; | |
4538 | b->cond_string = cond_string[i]; | |
4539 | b->ignore_count = ignore_count; | |
4540 | b->enable = enabled; | |
4541 | b->disposition = disposition; | |
4542 | mention (b); | |
4543 | } | |
4544 | } | |
4545 | } | |
c906108c | 4546 | |
c3f6f71d JM |
4547 | /* Parse ARG which is assumed to be a SAL specification possibly |
4548 | followed by conditionals. On return, SALS contains an array of SAL | |
4549 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4550 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4551 | |
c3f6f71d JM |
4552 | void |
4553 | parse_breakpoint_sals (char **address, | |
4554 | struct symtabs_and_lines *sals, | |
4555 | char ***addr_string) | |
4556 | { | |
4557 | char *addr_start = *address; | |
4558 | *addr_string = NULL; | |
4559 | /* If no arg given, or if first arg is 'if ', use the default | |
4560 | breakpoint. */ | |
4561 | if ((*address) == NULL | |
4562 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4563 | { |
4564 | if (default_breakpoint_valid) | |
4565 | { | |
c3f6f71d JM |
4566 | struct symtab_and_line sal; |
4567 | INIT_SAL (&sal); /* initialize to zeroes */ | |
4568 | sals->sals = (struct symtab_and_line *) | |
c906108c SS |
4569 | xmalloc (sizeof (struct symtab_and_line)); |
4570 | sal.pc = default_breakpoint_address; | |
4571 | sal.line = default_breakpoint_line; | |
4572 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4573 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4574 | sals->sals[0] = sal; |
4575 | sals->nelts = 1; | |
c906108c SS |
4576 | } |
4577 | else | |
4578 | error ("No default breakpoint address now."); | |
4579 | } | |
4580 | else | |
4581 | { | |
c906108c | 4582 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4583 | current_source_symtab (which is decode_line_1's default). This |
4584 | should produce the results we want almost all of the time while | |
4585 | leaving default_breakpoint_* alone. */ | |
c906108c SS |
4586 | if (default_breakpoint_valid |
4587 | && (!current_source_symtab | |
c3f6f71d JM |
4588 | || (strchr ("+-", (*address)[0]) != NULL))) |
4589 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, | |
4590 | default_breakpoint_line, addr_string); | |
c906108c | 4591 | else |
c3f6f71d | 4592 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); |
c906108c | 4593 | } |
c3f6f71d JM |
4594 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4595 | if (sals->nelts > 0 && *addr_string == NULL) | |
4596 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4597 | if (addr_start != (*address)) | |
c906108c | 4598 | { |
c3f6f71d JM |
4599 | int i; |
4600 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4601 | { |
c3f6f71d JM |
4602 | /* Add the string if not present. */ |
4603 | if ((*addr_string)[i] == NULL) | |
4604 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4605 | } |
4606 | } | |
c3f6f71d | 4607 | } |
c906108c | 4608 | |
c906108c | 4609 | |
c3f6f71d JM |
4610 | /* Convert each SAL into a real PC. Verify that the PC can be |
4611 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4612 | |
c3f6f71d JM |
4613 | void |
4614 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, | |
4615 | char *address) | |
4616 | { | |
4617 | int i; | |
4618 | for (i = 0; i < sals->nelts; i++) | |
4619 | { | |
4620 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4621 | |
4622 | /* It's possible for the PC to be nonzero, but still an illegal | |
4623 | value on some targets. | |
4624 | ||
4625 | For example, on HP-UX if you start gdb, and before running the | |
4626 | inferior you try to set a breakpoint on a shared library function | |
4627 | "foo" where the inferior doesn't call "foo" directly but does | |
4628 | pass its address to another function call, then we do find a | |
4629 | minimal symbol for the "foo", but it's address is invalid. | |
4630 | (Appears to be an index into a table that the loader sets up | |
4631 | when the inferior is run.) | |
4632 | ||
4633 | Give the target a chance to bless sals.sals[i].pc before we | |
4634 | try to make a breakpoint for it. */ | |
c3f6f71d | 4635 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4636 | { |
c3f6f71d JM |
4637 | if (address == NULL) |
4638 | error ("Cannot break without a running program."); | |
4639 | else | |
4640 | error ("Cannot break on %s without a running program.", | |
4641 | address); | |
c5aa993b | 4642 | } |
c3f6f71d JM |
4643 | } |
4644 | } | |
4645 | ||
4646 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4647 | flag: first bit : 0 non-temporary, 1 temporary. | |
4648 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4649 | |
c3f6f71d | 4650 | static void |
fba45db2 | 4651 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d JM |
4652 | { |
4653 | int tempflag, hardwareflag; | |
4654 | struct symtabs_and_lines sals; | |
4655 | register struct expression **cond = 0; | |
4656 | /* Pointers in arg to the start, and one past the end, of the | |
4657 | condition. */ | |
4658 | char **cond_string = (char **) NULL; | |
4659 | char *addr_start = arg; | |
4660 | char **addr_string; | |
4661 | struct cleanup *old_chain; | |
4662 | struct cleanup *breakpoint_chain = NULL; | |
4663 | int i; | |
4664 | int thread = -1; | |
4665 | int ignore_count = 0; | |
4666 | ||
4667 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4668 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4669 | |
c3f6f71d JM |
4670 | sals.sals = NULL; |
4671 | sals.nelts = 0; | |
4672 | addr_string = NULL; | |
4673 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4674 | ||
4675 | if (!sals.nelts) | |
4676 | return; | |
4677 | ||
4678 | /* Create a chain of things that always need to be cleaned up. */ | |
4679 | old_chain = make_cleanup (null_cleanup, 0); | |
4680 | ||
4681 | /* Make sure that all storage allocated to SALS gets freed. */ | |
4682 | make_cleanup (free, sals.sals); | |
4683 | ||
4684 | /* Cleanup the addr_string array but not its contents. */ | |
4685 | make_cleanup (free, addr_string); | |
4686 | ||
4687 | /* Allocate space for all the cond expressions. */ | |
4688 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
4689 | make_cleanup (free, cond); | |
4690 | ||
4691 | /* Allocate space for all the cond strings. */ | |
4692 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
4693 | make_cleanup (free, cond_string); | |
4694 | ||
4695 | /* ----------------------------- SNIP ----------------------------- | |
4696 | Anything added to the cleanup chain beyond this point is assumed | |
4697 | to be part of a breakpoint. If the breakpoint create succeeds | |
4698 | then the memory is not reclaimed. */ | |
4699 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4700 | ||
4701 | /* Mark the contents of the addr_string for cleanup. These go on | |
4702 | the breakpoint_chain and only occure if the breakpoint create | |
4703 | fails. */ | |
4704 | for (i = 0; i < sals.nelts; i++) | |
4705 | { | |
4706 | if (addr_string[i] != NULL) | |
4707 | make_cleanup (free, addr_string[i]); | |
4708 | } | |
4709 | ||
4710 | /* Resolve all line numbers to PC's and verify that the addresses | |
4711 | are ok for the target. */ | |
4712 | breakpoint_sals_to_pc (&sals, addr_start); | |
4713 | ||
4714 | /* Verify that condition can be parsed, before setting any | |
4715 | breakpoints. Allocate a separate condition expression for each | |
4716 | breakpoint. */ | |
4717 | thread = -1; /* No specific thread yet */ | |
4718 | for (i = 0; i < sals.nelts; i++) | |
4719 | { | |
4720 | char *tok = arg; | |
c906108c SS |
4721 | while (tok && *tok) |
4722 | { | |
c3f6f71d JM |
4723 | char *end_tok; |
4724 | int toklen; | |
4725 | char *cond_start = NULL; | |
4726 | char *cond_end = NULL; | |
c906108c SS |
4727 | while (*tok == ' ' || *tok == '\t') |
4728 | tok++; | |
4729 | ||
4730 | end_tok = tok; | |
4731 | ||
4732 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4733 | end_tok++; | |
4734 | ||
4735 | toklen = end_tok - tok; | |
4736 | ||
4737 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4738 | { | |
4739 | tok = cond_start = end_tok + 1; | |
c3f6f71d JM |
4740 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
4741 | make_cleanup (free, cond[i]); | |
c906108c | 4742 | cond_end = tok; |
c3f6f71d JM |
4743 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
4744 | make_cleanup (free, cond_string[i]); | |
c906108c SS |
4745 | } |
4746 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4747 | { | |
4748 | char *tmptok; | |
4749 | ||
4750 | tok = end_tok + 1; | |
4751 | tmptok = tok; | |
4752 | thread = strtol (tok, &tok, 0); | |
4753 | if (tok == tmptok) | |
4754 | error ("Junk after thread keyword."); | |
4755 | if (!valid_thread_id (thread)) | |
4756 | error ("Unknown thread %d\n", thread); | |
4757 | } | |
4758 | else | |
4759 | error ("Junk at end of arguments."); | |
4760 | } | |
4761 | } | |
c906108c | 4762 | |
c3f6f71d JM |
4763 | create_breakpoints (sals, addr_string, cond, cond_string, |
4764 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4765 | tempflag ? del : donttouch, | |
4766 | thread, ignore_count, from_tty); | |
4767 | ||
4768 | if (sals.nelts > 1) | |
4769 | { | |
4770 | warning ("Multiple breakpoints were set."); | |
4771 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4772 | } |
c3f6f71d JM |
4773 | /* That's it. Discard the cleanups for data inserted into the |
4774 | breakpoint. */ | |
4775 | discard_cleanups (breakpoint_chain); | |
4776 | /* But cleanup everything else. */ | |
4777 | do_cleanups (old_chain); | |
4778 | } | |
c906108c | 4779 | |
c3f6f71d JM |
4780 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
4781 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 4782 | |
c3f6f71d JM |
4783 | struct captured_breakpoint_args |
4784 | { | |
4785 | char *address; | |
4786 | char *condition; | |
4787 | int hardwareflag; | |
4788 | int tempflag; | |
4789 | int thread; | |
4790 | int ignore_count; | |
4791 | }; | |
4792 | ||
4793 | static int | |
4794 | do_captured_breakpoint (void *data) | |
4795 | { | |
4796 | struct captured_breakpoint_args *args = data; | |
4797 | struct symtabs_and_lines sals; | |
4798 | register struct expression **cond; | |
4799 | struct cleanup *old_chain; | |
4800 | struct cleanup *breakpoint_chain = NULL; | |
4801 | int i; | |
4802 | char **addr_string; | |
4803 | char **cond_string; | |
4804 | ||
4805 | char *address_end; | |
4806 | ||
4807 | /* Parse the source and lines spec. Delay check that the expression | |
4808 | didn't contain trailing garbage until after cleanups are in | |
4809 | place. */ | |
4810 | sals.sals = NULL; | |
4811 | sals.nelts = 0; | |
4812 | address_end = args->address; | |
4813 | addr_string = NULL; | |
4814 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
4815 | ||
4816 | if (!sals.nelts) | |
4817 | return GDB_RC_NONE; | |
4818 | ||
4819 | /* Create a chain of things at always need to be cleaned up. */ | |
4820 | old_chain = make_cleanup (null_cleanup, 0); | |
4821 | ||
4822 | /* Always have a addr_string array, even if it is empty. */ | |
4823 | make_cleanup (free, addr_string); | |
4824 | ||
4825 | /* Make sure that all storage allocated to SALS gets freed. */ | |
4826 | make_cleanup (free, sals.sals); | |
4827 | ||
4828 | /* Allocate space for all the cond expressions. */ | |
4829 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
4830 | make_cleanup (free, cond); | |
4831 | ||
4832 | /* Allocate space for all the cond strings. */ | |
4833 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
4834 | make_cleanup (free, cond_string); | |
4835 | ||
4836 | /* ----------------------------- SNIP ----------------------------- | |
4837 | Anything added to the cleanup chain beyond this point is assumed | |
4838 | to be part of a breakpoint. If the breakpoint create goes | |
4839 | through then that memory is not cleaned up. */ | |
4840 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4841 | ||
4842 | /* Mark the contents of the addr_string for cleanup. These go on | |
4843 | the breakpoint_chain and only occure if the breakpoint create | |
4844 | fails. */ | |
c906108c SS |
4845 | for (i = 0; i < sals.nelts; i++) |
4846 | { | |
c3f6f71d JM |
4847 | if (addr_string[i] != NULL) |
4848 | make_cleanup (free, addr_string[i]); | |
c906108c SS |
4849 | } |
4850 | ||
c3f6f71d JM |
4851 | /* Wait until now before checking for garbage at the end of the |
4852 | address. That way cleanups can take care of freeing any | |
4853 | memory. */ | |
4854 | if (*address_end != '\0') | |
4855 | error ("Garbage %s following breakpoint address", address_end); | |
4856 | ||
4857 | /* Resolve all line numbers to PC's. */ | |
4858 | breakpoint_sals_to_pc (&sals, args->address); | |
4859 | ||
4860 | /* Verify that conditions can be parsed, before setting any | |
4861 | breakpoints. */ | |
4862 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 4863 | { |
c3f6f71d JM |
4864 | if (args->condition != NULL) |
4865 | { | |
4866 | char *tok = args->condition; | |
4867 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
4868 | if (*tok != '\0') | |
4869 | error ("Garbage %s follows condition", tok); | |
4870 | make_cleanup (free, cond[i]); | |
4871 | cond_string[i] = xstrdup (args->condition); | |
4872 | } | |
c906108c | 4873 | } |
c3f6f71d JM |
4874 | |
4875 | create_breakpoints (sals, addr_string, cond, cond_string, | |
4876 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4877 | args->tempflag ? del : donttouch, | |
4878 | args->thread, args->ignore_count, 0/*from-tty*/); | |
4879 | ||
4880 | /* That's it. Discard the cleanups for data inserted into the | |
4881 | breakpoint. */ | |
4882 | discard_cleanups (breakpoint_chain); | |
4883 | /* But cleanup everything else. */ | |
c906108c | 4884 | do_cleanups (old_chain); |
c3f6f71d | 4885 | return GDB_RC_OK; |
c906108c SS |
4886 | } |
4887 | ||
c3f6f71d JM |
4888 | enum gdb_rc |
4889 | gdb_breakpoint (char *address, char *condition, | |
4890 | int hardwareflag, int tempflag, | |
4891 | int thread, int ignore_count) | |
4892 | { | |
4893 | struct captured_breakpoint_args args; | |
4894 | args.address = address; | |
4895 | args.condition = condition; | |
4896 | args.hardwareflag = hardwareflag; | |
4897 | args.tempflag = tempflag; | |
4898 | args.thread = thread; | |
4899 | args.ignore_count = ignore_count; | |
4900 | return catch_errors (do_captured_breakpoint, &args, | |
4901 | NULL, RETURN_MASK_ALL); | |
4902 | } | |
4903 | ||
4904 | ||
c906108c | 4905 | static void |
fba45db2 | 4906 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
4907 | { |
4908 | struct frame_info *frame; | |
4909 | CORE_ADDR low, high, selected_pc = 0; | |
4910 | char *extra_args, *level_arg, *addr_string; | |
4911 | int extra_args_len = 0, if_arg = 0; | |
4912 | ||
4913 | if (!arg || | |
4914 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4915 | { | |
4916 | ||
4917 | if (default_breakpoint_valid) | |
4918 | { | |
4919 | if (selected_frame) | |
4920 | { | |
4921 | selected_pc = selected_frame->pc; | |
4922 | if (arg) | |
4923 | if_arg = 1; | |
4924 | } | |
4925 | else | |
4926 | error ("No selected frame."); | |
4927 | } | |
4928 | else | |
4929 | error ("No default breakpoint address now."); | |
4930 | } | |
4931 | else | |
4932 | { | |
4933 | extra_args = strchr (arg, ' '); | |
4934 | if (extra_args) | |
4935 | { | |
4936 | extra_args++; | |
4937 | extra_args_len = strlen (extra_args); | |
4938 | level_arg = (char *) xmalloc (extra_args - arg); | |
4939 | strncpy (level_arg, arg, extra_args - arg - 1); | |
4940 | level_arg[extra_args - arg - 1] = '\0'; | |
4941 | } | |
4942 | else | |
4943 | { | |
4944 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
4945 | strcpy (level_arg, arg); | |
4946 | } | |
4947 | ||
4948 | frame = parse_frame_specification (level_arg); | |
4949 | if (frame) | |
4950 | selected_pc = frame->pc; | |
4951 | else | |
4952 | selected_pc = 0; | |
4953 | } | |
4954 | if (if_arg) | |
4955 | { | |
4956 | extra_args = arg; | |
c5aa993b | 4957 | extra_args_len = strlen (arg); |
c906108c SS |
4958 | } |
4959 | ||
4960 | if (selected_pc) | |
4961 | { | |
c5aa993b | 4962 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c SS |
4963 | { |
4964 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
4965 | if (extra_args_len) | |
d4f3574e | 4966 | sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 4967 | else |
d4f3574e | 4968 | sprintf (addr_string, "*0x%s", paddr_nz (high)); |
c906108c SS |
4969 | break_command_1 (addr_string, flag, from_tty); |
4970 | free (addr_string); | |
4971 | } | |
4972 | else | |
4973 | error ("No function contains the specified address"); | |
4974 | } | |
4975 | else | |
4976 | error ("Unable to set breakpoint at procedure exit"); | |
4977 | } | |
4978 | ||
4979 | ||
4980 | static void | |
fba45db2 | 4981 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
4982 | { |
4983 | char *addr_string, *break_string, *beg_addr_string; | |
4984 | CORE_ADDR low, high; | |
4985 | struct symtabs_and_lines sals; | |
4986 | struct symtab_and_line sal; | |
4987 | struct cleanup *old_chain; | |
4988 | char *extra_args; | |
4989 | int extra_args_len = 0; | |
4990 | int i, if_arg = 0; | |
4991 | ||
4992 | if (!arg || | |
4993 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4994 | { | |
4995 | if (default_breakpoint_valid) | |
4996 | { | |
4997 | if (selected_frame) | |
4998 | { | |
4999 | addr_string = (char *) xmalloc (15); | |
d4f3574e | 5000 | sprintf (addr_string, "*0x%s", paddr_nz (selected_frame->pc)); |
c906108c SS |
5001 | if (arg) |
5002 | if_arg = 1; | |
5003 | } | |
5004 | else | |
5005 | error ("No selected frame."); | |
5006 | } | |
5007 | else | |
5008 | error ("No default breakpoint address now."); | |
5009 | } | |
5010 | else | |
5011 | { | |
5012 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5013 | strcpy (addr_string, arg); | |
5014 | } | |
5015 | ||
5016 | if (if_arg) | |
5017 | { | |
5018 | extra_args = arg; | |
c5aa993b JM |
5019 | extra_args_len = strlen (arg); |
5020 | } | |
5021 | else if (arg) | |
5022 | { | |
5023 | /* get the stuff after the function name or address */ | |
5024 | extra_args = strchr (arg, ' '); | |
5025 | if (extra_args) | |
5026 | { | |
5027 | extra_args++; | |
5028 | extra_args_len = strlen (extra_args); | |
5029 | } | |
c906108c | 5030 | } |
c906108c SS |
5031 | |
5032 | sals.sals = NULL; | |
5033 | sals.nelts = 0; | |
5034 | ||
c5aa993b JM |
5035 | beg_addr_string = addr_string; |
5036 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
5037 | (char ***) NULL); | |
c906108c SS |
5038 | |
5039 | free (beg_addr_string); | |
5040 | old_chain = make_cleanup (free, sals.sals); | |
5041 | for (i = 0; (i < sals.nelts); i++) | |
5042 | { | |
5043 | sal = sals.sals[i]; | |
c5aa993b | 5044 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c SS |
5045 | { |
5046 | break_string = (char *) xmalloc (extra_args_len + 26); | |
5047 | if (extra_args_len) | |
d4f3574e | 5048 | sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5049 | else |
d4f3574e | 5050 | sprintf (break_string, "*0x%s", paddr_nz (high)); |
c906108c | 5051 | break_command_1 (break_string, flag, from_tty); |
c5aa993b | 5052 | free (break_string); |
c906108c SS |
5053 | } |
5054 | else | |
5055 | error ("No function contains the specified address"); | |
5056 | } | |
5057 | if (sals.nelts > 1) | |
5058 | { | |
53a5351d JM |
5059 | warning ("Multiple breakpoints were set.\n"); |
5060 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5061 | } |
c5aa993b | 5062 | do_cleanups (old_chain); |
c906108c SS |
5063 | } |
5064 | ||
5065 | ||
5066 | /* Helper function for break_command_1 and disassemble_command. */ | |
5067 | ||
5068 | void | |
fba45db2 | 5069 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5070 | { |
5071 | CORE_ADDR pc; | |
5072 | ||
5073 | if (sal->pc == 0 && sal->symtab != NULL) | |
5074 | { | |
5075 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5076 | error ("No line %d in file \"%s\".", | |
5077 | sal->line, sal->symtab->filename); | |
5078 | sal->pc = pc; | |
5079 | } | |
5080 | ||
5081 | if (sal->section == 0 && sal->symtab != NULL) | |
5082 | { | |
5083 | struct blockvector *bv; | |
c5aa993b JM |
5084 | struct block *b; |
5085 | struct symbol *sym; | |
5086 | int index; | |
c906108c | 5087 | |
c5aa993b | 5088 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5089 | if (bv != NULL) |
5090 | { | |
c5aa993b | 5091 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5092 | sym = block_function (b); |
5093 | if (sym != NULL) | |
5094 | { | |
5095 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5096 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5097 | } | |
5098 | else | |
5099 | { | |
5100 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5101 | have to look harder. This case can be executed if we have |
5102 | line numbers but no functions (as can happen in assembly | |
5103 | source). */ | |
c906108c | 5104 | |
c5aa993b | 5105 | struct minimal_symbol *msym; |
c906108c SS |
5106 | |
5107 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5108 | if (msym) | |
5109 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5110 | } | |
5111 | } | |
5112 | } | |
5113 | } | |
5114 | ||
5115 | void | |
fba45db2 | 5116 | break_command (char *arg, int from_tty) |
c906108c SS |
5117 | { |
5118 | break_command_1 (arg, 0, from_tty); | |
5119 | } | |
5120 | ||
7a292a7a | 5121 | static void |
fba45db2 | 5122 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5123 | { |
5124 | break_at_finish_command_1 (arg, 0, from_tty); | |
5125 | } | |
5126 | ||
7a292a7a | 5127 | static void |
fba45db2 | 5128 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5129 | { |
5130 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5131 | } | |
5132 | ||
5133 | void | |
fba45db2 | 5134 | tbreak_command (char *arg, int from_tty) |
c906108c SS |
5135 | { |
5136 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5137 | } | |
5138 | ||
7a292a7a | 5139 | static void |
fba45db2 | 5140 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5141 | { |
5142 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5143 | } | |
5144 | ||
5145 | static void | |
fba45db2 | 5146 | hbreak_command (char *arg, int from_tty) |
c906108c SS |
5147 | { |
5148 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
5149 | } | |
5150 | ||
5151 | static void | |
fba45db2 | 5152 | thbreak_command (char *arg, int from_tty) |
c906108c SS |
5153 | { |
5154 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
5155 | } | |
5156 | ||
5157 | static void | |
fba45db2 | 5158 | stop_command (char *arg, int from_tty) |
c906108c SS |
5159 | { |
5160 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5161 | Usage: stop in <function | address>\n\ | |
5162 | stop at <line>\n"); | |
5163 | } | |
5164 | ||
5165 | static void | |
fba45db2 | 5166 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5167 | { |
5168 | int badInput = 0; | |
5169 | ||
c5aa993b | 5170 | if (arg == (char *) NULL) |
c906108c SS |
5171 | badInput = 1; |
5172 | else if (*arg != '*') | |
5173 | { | |
5174 | char *argptr = arg; | |
5175 | int hasColon = 0; | |
5176 | ||
53a5351d JM |
5177 | /* look for a ':'. If this is a line number specification, then |
5178 | say it is bad, otherwise, it should be an address or | |
5179 | function/method name */ | |
c906108c | 5180 | while (*argptr && !hasColon) |
c5aa993b JM |
5181 | { |
5182 | hasColon = (*argptr == ':'); | |
5183 | argptr++; | |
5184 | } | |
c906108c SS |
5185 | |
5186 | if (hasColon) | |
c5aa993b | 5187 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5188 | else |
c5aa993b | 5189 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5190 | } |
5191 | ||
5192 | if (badInput) | |
c5aa993b | 5193 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
5194 | else |
5195 | break_command_1 (arg, 0, from_tty); | |
5196 | } | |
5197 | ||
5198 | static void | |
fba45db2 | 5199 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5200 | { |
5201 | int badInput = 0; | |
5202 | ||
c5aa993b | 5203 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5204 | badInput = 1; |
5205 | else | |
5206 | { | |
5207 | char *argptr = arg; | |
5208 | int hasColon = 0; | |
5209 | ||
5210 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5211 | it is probably a line number. */ |
c906108c | 5212 | while (*argptr && !hasColon) |
c5aa993b JM |
5213 | { |
5214 | hasColon = (*argptr == ':'); | |
5215 | argptr++; | |
5216 | } | |
c906108c SS |
5217 | |
5218 | if (hasColon) | |
c5aa993b | 5219 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5220 | else |
c5aa993b | 5221 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5222 | } |
5223 | ||
5224 | if (badInput) | |
c5aa993b | 5225 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
5226 | else |
5227 | break_command_1 (arg, 0, from_tty); | |
5228 | } | |
5229 | ||
5230 | /* ARGSUSED */ | |
53a5351d JM |
5231 | /* accessflag: hw_write: watch write, |
5232 | hw_read: watch read, | |
5233 | hw_access: watch access (read or write) */ | |
c906108c | 5234 | static void |
fba45db2 | 5235 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5236 | { |
5237 | struct breakpoint *b; | |
5238 | struct symtab_and_line sal; | |
5239 | struct expression *exp; | |
5240 | struct block *exp_valid_block; | |
5241 | struct value *val, *mark; | |
5242 | struct frame_info *frame; | |
5243 | struct frame_info *prev_frame = NULL; | |
5244 | char *exp_start = NULL; | |
5245 | char *exp_end = NULL; | |
5246 | char *tok, *end_tok; | |
5247 | int toklen; | |
5248 | char *cond_start = NULL; | |
5249 | char *cond_end = NULL; | |
5250 | struct expression *cond = NULL; | |
5251 | int i, other_type_used, target_resources_ok = 0; | |
5252 | enum bptype bp_type; | |
5253 | int mem_cnt = 0; | |
5254 | ||
c5aa993b JM |
5255 | INIT_SAL (&sal); /* initialize to zeroes */ |
5256 | ||
c906108c SS |
5257 | /* Parse arguments. */ |
5258 | innermost_block = NULL; | |
5259 | exp_start = arg; | |
5260 | exp = parse_exp_1 (&arg, 0, 0); | |
5261 | exp_end = arg; | |
5262 | exp_valid_block = innermost_block; | |
5263 | mark = value_mark (); | |
5264 | val = evaluate_expression (exp); | |
5265 | release_value (val); | |
5266 | if (VALUE_LAZY (val)) | |
5267 | value_fetch_lazy (val); | |
5268 | ||
5269 | tok = arg; | |
5270 | while (*tok == ' ' || *tok == '\t') | |
5271 | tok++; | |
5272 | end_tok = tok; | |
5273 | ||
5274 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5275 | end_tok++; | |
5276 | ||
5277 | toklen = end_tok - tok; | |
5278 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5279 | { | |
5280 | tok = cond_start = end_tok + 1; | |
5281 | cond = parse_exp_1 (&tok, 0, 0); | |
5282 | cond_end = tok; | |
5283 | } | |
5284 | if (*tok) | |
c5aa993b | 5285 | error ("Junk at end of command."); |
c906108c | 5286 | |
53a5351d | 5287 | if (accessflag == hw_read) |
c5aa993b | 5288 | bp_type = bp_read_watchpoint; |
53a5351d | 5289 | else if (accessflag == hw_access) |
c5aa993b JM |
5290 | bp_type = bp_access_watchpoint; |
5291 | else | |
5292 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5293 | |
5294 | mem_cnt = can_use_hardware_watchpoint (val); | |
5295 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5296 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5297 | if (mem_cnt != 0) |
5298 | { | |
5299 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5300 | target_resources_ok = |
5301 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5302 | other_type_used); | |
c5aa993b | 5303 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5304 | error ("Target does not support this type of hardware watchpoint."); |
5305 | ||
c5aa993b | 5306 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5307 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5308 | } |
c906108c SS |
5309 | |
5310 | #if defined(HPUXHPPA) | |
c5aa993b | 5311 | /* On HP-UX if you set a h/w |
c906108c SS |
5312 | watchpoint before the "run" command, the inferior dies with a e.g., |
5313 | SIGILL once you start it. I initially believed this was due to a | |
5314 | bad interaction between page protection traps and the initial | |
5315 | startup sequence by the dynamic linker. | |
5316 | ||
5317 | However, I tried avoiding that by having HP-UX's implementation of | |
5318 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid | |
5319 | yet, which forced slow watches before a "run" or "attach", and it | |
5320 | still fails somewhere in the startup code. | |
5321 | ||
5322 | Until I figure out what's happening, I'm disallowing watches altogether | |
5323 | before the "run" or "attach" command. We'll tell the user they must | |
5324 | set watches after getting the program started. */ | |
c5aa993b | 5325 | if (!target_has_execution) |
c906108c SS |
5326 | { |
5327 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5328 | return; | |
5329 | } | |
5330 | #endif /* HPUXHPPA */ | |
c5aa993b | 5331 | |
c906108c SS |
5332 | /* Now set up the breakpoint. */ |
5333 | b = set_raw_breakpoint (sal); | |
5334 | set_breakpoint_count (breakpoint_count + 1); | |
5335 | b->number = breakpoint_count; | |
5336 | b->disposition = donttouch; | |
5337 | b->exp = exp; | |
5338 | b->exp_valid_block = exp_valid_block; | |
5339 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5340 | b->val = val; | |
5341 | b->cond = cond; | |
5342 | if (cond_start) | |
5343 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5344 | else | |
5345 | b->cond_string = 0; | |
c5aa993b | 5346 | |
c906108c SS |
5347 | frame = block_innermost_frame (exp_valid_block); |
5348 | if (frame) | |
5349 | { | |
5350 | prev_frame = get_prev_frame (frame); | |
5351 | b->watchpoint_frame = frame->frame; | |
5352 | } | |
5353 | else | |
c5aa993b | 5354 | b->watchpoint_frame = (CORE_ADDR) 0; |
c906108c SS |
5355 | |
5356 | if (mem_cnt && target_resources_ok > 0) | |
5357 | b->type = bp_type; | |
5358 | else | |
5359 | b->type = bp_watchpoint; | |
5360 | ||
5361 | /* If the expression is "local", then set up a "watchpoint scope" | |
5362 | breakpoint at the point where we've left the scope of the watchpoint | |
5363 | expression. */ | |
5364 | if (innermost_block) | |
5365 | { | |
5366 | if (prev_frame) | |
5367 | { | |
5368 | struct breakpoint *scope_breakpoint; | |
5369 | struct symtab_and_line scope_sal; | |
5370 | ||
5371 | INIT_SAL (&scope_sal); /* initialize to zeroes */ | |
c5aa993b | 5372 | scope_sal.pc = get_frame_pc (prev_frame); |
c906108c SS |
5373 | scope_sal.section = find_pc_overlay (scope_sal.pc); |
5374 | ||
5375 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
5376 | set_breakpoint_count (breakpoint_count + 1); | |
5377 | scope_breakpoint->number = breakpoint_count; | |
5378 | ||
5379 | scope_breakpoint->type = bp_watchpoint_scope; | |
5380 | scope_breakpoint->enable = enabled; | |
5381 | ||
5382 | /* Automatically delete the breakpoint when it hits. */ | |
5383 | scope_breakpoint->disposition = del; | |
5384 | ||
5385 | /* Only break in the proper frame (help with recursion). */ | |
5386 | scope_breakpoint->frame = prev_frame->frame; | |
5387 | ||
5388 | /* Set the address at which we will stop. */ | |
5389 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
5390 | ||
5391 | /* The scope breakpoint is related to the watchpoint. We | |
5392 | will need to act on them together. */ | |
5393 | b->related_breakpoint = scope_breakpoint; | |
5394 | } | |
5395 | } | |
5396 | value_free_to_mark (mark); | |
5397 | mention (b); | |
5398 | } | |
5399 | ||
5400 | /* Return count of locations need to be watched and can be handled | |
5401 | in hardware. If the watchpoint can not be handled | |
5402 | in hardware return zero. */ | |
5403 | ||
5404 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d JM |
5405 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
5406 | ((BYTE_SIZE) <= (REGISTER_SIZE)) | |
5407 | #endif | |
5408 | ||
5409 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5410 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
5411 | TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN) | |
c906108c SS |
5412 | #endif |
5413 | ||
5414 | static int | |
fba45db2 | 5415 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5416 | { |
5417 | int found_memory_cnt = 0; | |
2e70b7b9 | 5418 | struct value *head = v; |
c906108c SS |
5419 | |
5420 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5421 | if (!can_use_hw_watchpoints) |
c906108c | 5422 | return 0; |
c5aa993b | 5423 | |
5c44784c JM |
5424 | /* Make sure that the value of the expression depends only upon |
5425 | memory contents, and values computed from them within GDB. If we | |
5426 | find any register references or function calls, we can't use a | |
5427 | hardware watchpoint. | |
5428 | ||
5429 | The idea here is that evaluating an expression generates a series | |
5430 | of values, one holding the value of every subexpression. (The | |
5431 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5432 | a*b+c.) GDB's values hold almost enough information to establish | |
5433 | the criteria given above --- they identify memory lvalues, | |
5434 | register lvalues, computed values, etcetera. So we can evaluate | |
5435 | the expression, and then scan the chain of values that leaves | |
5436 | behind to decide whether we can detect any possible change to the | |
5437 | expression's final value using only hardware watchpoints. | |
5438 | ||
5439 | However, I don't think that the values returned by inferior | |
5440 | function calls are special in any way. So this function may not | |
5441 | notice that an expression involving an inferior function call | |
5442 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5443 | for (; v; v = v->next) |
c906108c | 5444 | { |
5c44784c | 5445 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5446 | { |
5c44784c JM |
5447 | if (VALUE_LAZY (v)) |
5448 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5449 | we either just used its address (e.g., `a' in `a.b') or | |
5450 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5451 | ; | |
53a5351d | 5452 | else |
5c44784c JM |
5453 | { |
5454 | /* Ahh, memory we actually used! Check if we can cover | |
5455 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5456 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5457 | ||
5458 | /* We only watch structs and arrays if user asked for it | |
5459 | explicitly, never if they just happen to appear in a | |
5460 | middle of some value chain. */ | |
5461 | if (v == head | |
5462 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5463 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5464 | { | |
5465 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5466 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5467 | ||
5468 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5469 | return 0; | |
5470 | else | |
5471 | found_memory_cnt++; | |
5472 | } | |
5c44784c | 5473 | } |
c5aa993b | 5474 | } |
c906108c | 5475 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5476 | return 0; /* ??? What does this represent? */ |
5477 | else if (v->lval == lval_register) | |
5478 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5479 | } |
5480 | ||
5481 | /* The expression itself looks suitable for using a hardware | |
5482 | watchpoint, but give the target machine a chance to reject it. */ | |
5483 | return found_memory_cnt; | |
5484 | } | |
5485 | ||
8b93c638 JM |
5486 | #ifdef UI_OUT |
5487 | void | |
fba45db2 | 5488 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5489 | { |
5490 | watch_command (arg, from_tty); | |
5491 | } | |
5492 | #endif | |
c5aa993b | 5493 | static void |
fba45db2 | 5494 | watch_command (char *arg, int from_tty) |
c906108c | 5495 | { |
53a5351d | 5496 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5497 | } |
5498 | ||
8b93c638 JM |
5499 | #ifdef UI_OUT |
5500 | void | |
fba45db2 | 5501 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5502 | { |
5503 | rwatch_command (arg, from_tty); | |
5504 | } | |
5505 | #endif | |
c5aa993b | 5506 | static void |
fba45db2 | 5507 | rwatch_command (char *arg, int from_tty) |
c906108c | 5508 | { |
53a5351d | 5509 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5510 | } |
5511 | ||
8b93c638 JM |
5512 | #ifdef UI_OUT |
5513 | void | |
fba45db2 | 5514 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5515 | { |
5516 | awatch_command (arg, from_tty); | |
5517 | } | |
5518 | #endif | |
c5aa993b | 5519 | static void |
fba45db2 | 5520 | awatch_command (char *arg, int from_tty) |
c906108c | 5521 | { |
53a5351d | 5522 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5523 | } |
c906108c | 5524 | \f |
c5aa993b | 5525 | |
43ff13b4 | 5526 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5527 | because it uses the mechanisms of breakpoints. */ |
5528 | ||
43ff13b4 JM |
5529 | /* This function is called by fetch_inferior_event via the |
5530 | cmd_continuation pointer, to complete the until command. It takes | |
5531 | care of cleaning up the temporary breakpoints set up by the until | |
5532 | command. */ | |
c2c6d25f JM |
5533 | static void |
5534 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5535 | { |
0d06e24b JM |
5536 | struct cleanup *cleanups; |
5537 | ||
57e687d9 | 5538 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5539 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5540 | } |
5541 | ||
c906108c SS |
5542 | /* ARGSUSED */ |
5543 | void | |
fba45db2 | 5544 | until_break_command (char *arg, int from_tty) |
c906108c SS |
5545 | { |
5546 | struct symtabs_and_lines sals; | |
5547 | struct symtab_and_line sal; | |
5548 | struct frame_info *prev_frame = get_prev_frame (selected_frame); | |
5549 | struct breakpoint *breakpoint; | |
5550 | struct cleanup *old_chain; | |
0d06e24b JM |
5551 | struct continuation_arg *arg1; |
5552 | ||
c906108c SS |
5553 | |
5554 | clear_proceed_status (); | |
5555 | ||
5556 | /* Set a breakpoint where the user wants it and at return from | |
5557 | this function */ | |
c5aa993b | 5558 | |
c906108c SS |
5559 | if (default_breakpoint_valid) |
5560 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 5561 | default_breakpoint_line, (char ***) NULL); |
c906108c | 5562 | else |
53a5351d JM |
5563 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
5564 | 0, (char ***) NULL); | |
c5aa993b | 5565 | |
c906108c SS |
5566 | if (sals.nelts != 1) |
5567 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5568 | |
c906108c | 5569 | sal = sals.sals[0]; |
c5aa993b JM |
5570 | free ((PTR) sals.sals); /* malloc'd, so freed */ |
5571 | ||
c906108c SS |
5572 | if (*arg) |
5573 | error ("Junk at end of arguments."); | |
c5aa993b | 5574 | |
c906108c | 5575 | resolve_sal_pc (&sal); |
c5aa993b | 5576 | |
c906108c | 5577 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
c5aa993b | 5578 | |
6426a772 | 5579 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5580 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5581 | else |
4d6140d9 | 5582 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5583 | |
5584 | /* If we are running asynchronously, and the target supports async | |
5585 | execution, we are not waiting for the target to stop, in the call | |
5586 | tp proceed, below. This means that we cannot delete the | |
5587 | brekpoints until the target has actually stopped. The only place | |
5588 | where we get a chance to do that is in fetch_inferior_event, so | |
5589 | we must set things up for that. */ | |
5590 | ||
6426a772 | 5591 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 5592 | { |
0d06e24b JM |
5593 | /* In this case the arg for the continuation is just the point |
5594 | in the exec_cleanups chain from where to start doing | |
5595 | cleanups, because all the continuation does is the cleanups in | |
5596 | the exec_cleanup_chain. */ | |
5597 | arg1 = | |
5598 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5599 | arg1->next = NULL; |
5600 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5601 | |
5602 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5603 | } |
c906108c SS |
5604 | |
5605 | /* Keep within the current frame */ | |
c5aa993b | 5606 | |
c906108c SS |
5607 | if (prev_frame) |
5608 | { | |
5609 | sal = find_pc_line (prev_frame->pc, 0); | |
5610 | sal.pc = prev_frame->pc; | |
5611 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); | |
6426a772 | 5612 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5613 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5614 | else |
4d6140d9 | 5615 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5616 | } |
c5aa993b | 5617 | |
c906108c | 5618 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5619 | /* Do the cleanups now, anly if we are not running asynchronously, |
5620 | of if we are, but the target is still synchronous. */ | |
6426a772 | 5621 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 5622 | do_cleanups (old_chain); |
c906108c SS |
5623 | } |
5624 | \f | |
5625 | #if 0 | |
5626 | /* These aren't used; I don't konw what they were for. */ | |
5627 | /* Set a breakpoint at the catch clause for NAME. */ | |
5628 | static int | |
fba45db2 | 5629 | catch_breakpoint (char *name) |
c906108c SS |
5630 | { |
5631 | } | |
5632 | ||
5633 | static int | |
fba45db2 | 5634 | disable_catch_breakpoint (void) |
c906108c SS |
5635 | { |
5636 | } | |
5637 | ||
5638 | static int | |
fba45db2 | 5639 | delete_catch_breakpoint (void) |
c906108c SS |
5640 | { |
5641 | } | |
5642 | ||
5643 | static int | |
fba45db2 | 5644 | enable_catch_breakpoint (void) |
c906108c SS |
5645 | { |
5646 | } | |
5647 | #endif /* 0 */ | |
5648 | ||
5649 | struct sal_chain | |
5650 | { | |
5651 | struct sal_chain *next; | |
5652 | struct symtab_and_line sal; | |
5653 | }; | |
5654 | ||
7a292a7a | 5655 | #if 0 |
c906108c SS |
5656 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
5657 | had been commented out in the v.4.16 sources, and stays | |
5658 | disabled there now because "catch NAME" syntax isn't allowed. | |
5659 | pai/1997-07-11 */ | |
5660 | /* This isn't used; I don't know what it was for. */ | |
5661 | /* For each catch clause identified in ARGS, run FUNCTION | |
5662 | with that clause as an argument. */ | |
5663 | static struct symtabs_and_lines | |
5664 | map_catch_names (args, function) | |
5665 | char *args; | |
c5aa993b | 5666 | int (*function) (); |
c906108c SS |
5667 | { |
5668 | register char *p = args; | |
5669 | register char *p1; | |
5670 | struct symtabs_and_lines sals; | |
5671 | #if 0 | |
5672 | struct sal_chain *sal_chain = 0; | |
5673 | #endif | |
5674 | ||
5675 | if (p == 0) | |
5676 | error_no_arg ("one or more catch names"); | |
5677 | ||
5678 | sals.nelts = 0; | |
5679 | sals.sals = NULL; | |
5680 | ||
5681 | while (*p) | |
5682 | { | |
5683 | p1 = p; | |
5684 | /* Don't swallow conditional part. */ | |
5685 | if (p1[0] == 'i' && p1[1] == 'f' | |
5686 | && (p1[2] == ' ' || p1[2] == '\t')) | |
5687 | break; | |
5688 | ||
5689 | if (isalpha (*p1)) | |
5690 | { | |
5691 | p1++; | |
5692 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
5693 | p1++; | |
5694 | } | |
5695 | ||
5696 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
5697 | error ("Arguments must be catch names."); | |
5698 | ||
5699 | *p1 = 0; | |
5700 | #if 0 | |
5701 | if (function (p)) | |
5702 | { | |
5703 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5704 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
5705 | next->next = sal_chain; |
5706 | next->sal = get_catch_sal (p); | |
5707 | sal_chain = next; | |
5708 | goto win; | |
5709 | } | |
5710 | #endif | |
5711 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
5712 | #if 0 | |
5713 | win: | |
5714 | #endif | |
5715 | p = p1; | |
c5aa993b JM |
5716 | while (*p == ' ' || *p == '\t') |
5717 | p++; | |
c906108c SS |
5718 | } |
5719 | } | |
7a292a7a | 5720 | #endif |
c906108c SS |
5721 | |
5722 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
5723 | ||
5724 | static struct symtabs_and_lines | |
fba45db2 | 5725 | get_catch_sals (int this_level_only) |
c906108c SS |
5726 | { |
5727 | register struct blockvector *bl; | |
5728 | register struct block *block; | |
5729 | int index, have_default = 0; | |
5730 | CORE_ADDR pc; | |
5731 | struct symtabs_and_lines sals; | |
5732 | struct sal_chain *sal_chain = 0; | |
5733 | char *blocks_searched; | |
5734 | ||
5735 | /* Not sure whether an error message is always the correct response, | |
5736 | but it's better than a core dump. */ | |
5737 | if (selected_frame == NULL) | |
5738 | error ("No selected frame."); | |
5739 | block = get_frame_block (selected_frame); | |
5740 | pc = selected_frame->pc; | |
5741 | ||
5742 | sals.nelts = 0; | |
5743 | sals.sals = NULL; | |
5744 | ||
5745 | if (block == 0) | |
5746 | error ("No symbol table info available.\n"); | |
5747 | ||
5748 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
5749 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5750 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5751 | ||
5752 | while (block != 0) | |
5753 | { | |
5754 | CORE_ADDR end = BLOCK_END (block) - 4; | |
5755 | int last_index; | |
5756 | ||
5757 | if (bl != blockvector_for_pc (end, &index)) | |
5758 | error ("blockvector blotch"); | |
5759 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
5760 | error ("blockvector botch"); | |
5761 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
5762 | index += 1; | |
5763 | ||
5764 | /* Don't print out blocks that have gone by. */ | |
5765 | while (index < last_index | |
5766 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
5767 | index++; | |
5768 | ||
5769 | while (index < last_index | |
5770 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
5771 | { | |
5772 | if (blocks_searched[index] == 0) | |
5773 | { | |
5774 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
5775 | int nsyms; | |
5776 | register int i; | |
5777 | register struct symbol *sym; | |
5778 | ||
5779 | nsyms = BLOCK_NSYMS (b); | |
5780 | ||
5781 | for (i = 0; i < nsyms; i++) | |
5782 | { | |
5783 | sym = BLOCK_SYM (b, i); | |
5784 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
5785 | { | |
5786 | if (have_default) | |
5787 | continue; | |
5788 | have_default = 1; | |
5789 | } | |
5790 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
5791 | { | |
5792 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5793 | alloca (sizeof (struct sal_chain)); |
c906108c | 5794 | next->next = sal_chain; |
53a5351d JM |
5795 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
5796 | 0); | |
c906108c SS |
5797 | sal_chain = next; |
5798 | } | |
5799 | } | |
5800 | blocks_searched[index] = 1; | |
5801 | } | |
5802 | index++; | |
5803 | } | |
5804 | if (have_default) | |
5805 | break; | |
5806 | if (sal_chain && this_level_only) | |
5807 | break; | |
5808 | ||
5809 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
5810 | Don't continue to its superblock, the block of |
5811 | per-file symbols. */ | |
c906108c SS |
5812 | if (BLOCK_FUNCTION (block)) |
5813 | break; | |
5814 | block = BLOCK_SUPERBLOCK (block); | |
5815 | } | |
5816 | ||
5817 | if (sal_chain) | |
5818 | { | |
5819 | struct sal_chain *tmp_chain; | |
5820 | ||
5821 | /* Count the number of entries. */ | |
5822 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
5823 | tmp_chain = tmp_chain->next) | |
5824 | index++; | |
5825 | ||
5826 | sals.nelts = index; | |
5827 | sals.sals = (struct symtab_and_line *) | |
5828 | xmalloc (index * sizeof (struct symtab_and_line)); | |
5829 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
5830 | sals.sals[index] = sal_chain->sal; | |
5831 | } | |
5832 | ||
5833 | return sals; | |
5834 | } | |
5835 | ||
5836 | static void | |
fba45db2 | 5837 | ep_skip_leading_whitespace (char **s) |
c906108c | 5838 | { |
c5aa993b JM |
5839 | if ((s == NULL) || (*s == NULL)) |
5840 | return; | |
5841 | while (isspace (**s)) | |
5842 | *s += 1; | |
c906108c | 5843 | } |
c5aa993b | 5844 | |
c906108c SS |
5845 | /* This function examines a string, and attempts to find a token |
5846 | that might be an event name in the leading characters. If a | |
5847 | possible match is found, a pointer to the last character of | |
5848 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5849 | |
c906108c | 5850 | static char * |
fba45db2 | 5851 | ep_find_event_name_end (char *arg) |
c906108c | 5852 | { |
c5aa993b JM |
5853 | char *s = arg; |
5854 | char *event_name_end = NULL; | |
5855 | ||
c906108c SS |
5856 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5857 | if (arg == NULL) | |
5858 | return NULL; | |
c5aa993b | 5859 | |
c906108c | 5860 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5861 | Basically, we're looking for alphanumerics and underscores; |
5862 | anything else delimites the token. */ | |
c906108c SS |
5863 | while (*s != '\0') |
5864 | { | |
c5aa993b JM |
5865 | if (!isalnum (*s) && (*s != '_')) |
5866 | break; | |
c906108c SS |
5867 | event_name_end = s; |
5868 | s++; | |
5869 | } | |
c5aa993b | 5870 | |
c906108c SS |
5871 | return event_name_end; |
5872 | } | |
5873 | ||
c5aa993b | 5874 | |
c906108c SS |
5875 | /* This function attempts to parse an optional "if <cond>" clause |
5876 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5877 | |
c906108c SS |
5878 | Else, it returns a pointer to the condition string. (It does not |
5879 | attempt to evaluate the string against a particular block.) And, | |
5880 | it updates arg to point to the first character following the parsed | |
5881 | if clause in the arg string. */ | |
53a5351d | 5882 | |
c906108c | 5883 | static char * |
fba45db2 | 5884 | ep_parse_optional_if_clause (char **arg) |
c906108c | 5885 | { |
c5aa993b JM |
5886 | char *cond_string; |
5887 | ||
5888 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5889 | return NULL; |
c5aa993b | 5890 | |
c906108c SS |
5891 | /* Skip the "if" keyword. */ |
5892 | (*arg) += 2; | |
c5aa993b | 5893 | |
c906108c SS |
5894 | /* Skip any extra leading whitespace, and record the start of the |
5895 | condition string. */ | |
5896 | ep_skip_leading_whitespace (arg); | |
5897 | cond_string = *arg; | |
c5aa993b | 5898 | |
c906108c SS |
5899 | /* Assume that the condition occupies the remainder of the arg string. */ |
5900 | (*arg) += strlen (cond_string); | |
c5aa993b | 5901 | |
c906108c SS |
5902 | return cond_string; |
5903 | } | |
c5aa993b | 5904 | |
c906108c SS |
5905 | /* This function attempts to parse an optional filename from the arg |
5906 | string. If one is not found, it returns NULL. | |
c5aa993b | 5907 | |
c906108c SS |
5908 | Else, it returns a pointer to the parsed filename. (This function |
5909 | makes no attempt to verify that a file of that name exists, or is | |
5910 | accessible.) And, it updates arg to point to the first character | |
5911 | following the parsed filename in the arg string. | |
c5aa993b | 5912 | |
c906108c SS |
5913 | Note that clients needing to preserve the returned filename for |
5914 | future access should copy it to their own buffers. */ | |
5915 | static char * | |
fba45db2 | 5916 | ep_parse_optional_filename (char **arg) |
c906108c | 5917 | { |
c5aa993b JM |
5918 | static char filename[1024]; |
5919 | char *arg_p = *arg; | |
5920 | int i; | |
5921 | char c; | |
5922 | ||
c906108c SS |
5923 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5924 | return NULL; | |
c5aa993b JM |
5925 | |
5926 | for (i = 0;; i++) | |
c906108c SS |
5927 | { |
5928 | c = *arg_p; | |
5929 | if (isspace (c)) | |
c5aa993b | 5930 | c = '\0'; |
c906108c SS |
5931 | filename[i] = c; |
5932 | if (c == '\0') | |
c5aa993b | 5933 | break; |
c906108c SS |
5934 | arg_p++; |
5935 | } | |
5936 | *arg = arg_p; | |
c5aa993b | 5937 | |
c906108c SS |
5938 | return filename; |
5939 | } | |
c5aa993b | 5940 | |
c906108c SS |
5941 | /* Commands to deal with catching events, such as signals, exceptions, |
5942 | process start/exit, etc. */ | |
c5aa993b JM |
5943 | |
5944 | typedef enum | |
5945 | { | |
5946 | catch_fork, catch_vfork | |
5947 | } | |
5948 | catch_fork_kind; | |
5949 | ||
e514a9d6 | 5950 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
a14ed312 KB |
5951 | static void catch_fork_command_1 (catch_fork_kind fork_kind, |
5952 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 5953 | |
c906108c | 5954 | static void |
fba45db2 KB |
5955 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
5956 | int from_tty) | |
c906108c | 5957 | { |
c5aa993b JM |
5958 | char *cond_string = NULL; |
5959 | ||
c906108c | 5960 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5961 | |
c906108c | 5962 | /* The allowed syntax is: |
c5aa993b JM |
5963 | catch [v]fork |
5964 | catch [v]fork if <cond> | |
5965 | ||
c906108c SS |
5966 | First, check if there's an if clause. */ |
5967 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 5968 | |
c906108c SS |
5969 | if ((*arg != '\0') && !isspace (*arg)) |
5970 | error ("Junk at end of arguments."); | |
c5aa993b | 5971 | |
c906108c SS |
5972 | /* If this target supports it, create a fork or vfork catchpoint |
5973 | and enable reporting of such events. */ | |
c5aa993b JM |
5974 | switch (fork_kind) |
5975 | { | |
5976 | case catch_fork: | |
c906108c SS |
5977 | create_fork_event_catchpoint (tempflag, cond_string); |
5978 | break; | |
c5aa993b | 5979 | case catch_vfork: |
c906108c SS |
5980 | create_vfork_event_catchpoint (tempflag, cond_string); |
5981 | break; | |
c5aa993b | 5982 | default: |
c906108c SS |
5983 | error ("unsupported or unknown fork kind; cannot catch it"); |
5984 | break; | |
c5aa993b | 5985 | } |
c906108c | 5986 | } |
e514a9d6 | 5987 | #endif |
c906108c | 5988 | |
e514a9d6 | 5989 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c | 5990 | static void |
fba45db2 | 5991 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 5992 | { |
c5aa993b | 5993 | char *cond_string = NULL; |
c906108c SS |
5994 | |
5995 | ep_skip_leading_whitespace (&arg); | |
5996 | ||
5997 | /* The allowed syntax is: | |
c5aa993b JM |
5998 | catch exec |
5999 | catch exec if <cond> | |
c906108c SS |
6000 | |
6001 | First, check if there's an if clause. */ | |
6002 | cond_string = ep_parse_optional_if_clause (&arg); | |
6003 | ||
6004 | if ((*arg != '\0') && !isspace (*arg)) | |
6005 | error ("Junk at end of arguments."); | |
6006 | ||
6007 | /* If this target supports it, create an exec catchpoint | |
6008 | and enable reporting of such events. */ | |
6009 | create_exec_event_catchpoint (tempflag, cond_string); | |
6010 | } | |
e514a9d6 | 6011 | #endif |
c5aa993b | 6012 | |
c906108c SS |
6013 | #if defined(SOLIB_ADD) |
6014 | static void | |
fba45db2 | 6015 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6016 | { |
c5aa993b JM |
6017 | char *dll_pathname = NULL; |
6018 | char *cond_string = NULL; | |
6019 | ||
c906108c | 6020 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6021 | |
c906108c | 6022 | /* The allowed syntax is: |
c5aa993b JM |
6023 | catch load |
6024 | catch load if <cond> | |
6025 | catch load <filename> | |
6026 | catch load <filename> if <cond> | |
6027 | ||
c906108c SS |
6028 | The user is not allowed to specify the <filename> after an |
6029 | if clause. | |
c5aa993b | 6030 | |
c906108c | 6031 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6032 | |
c906108c SS |
6033 | First, check if there's an if clause. If so, then there |
6034 | cannot be a filename. */ | |
6035 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6036 | |
c906108c SS |
6037 | /* If there was an if clause, then there cannot be a filename. |
6038 | Else, there might be a filename and an if clause. */ | |
6039 | if (cond_string == NULL) | |
6040 | { | |
6041 | dll_pathname = ep_parse_optional_filename (&arg); | |
6042 | ep_skip_leading_whitespace (&arg); | |
6043 | cond_string = ep_parse_optional_if_clause (&arg); | |
6044 | } | |
c5aa993b | 6045 | |
c906108c SS |
6046 | if ((*arg != '\0') && !isspace (*arg)) |
6047 | error ("Junk at end of arguments."); | |
c5aa993b | 6048 | |
c906108c SS |
6049 | /* Create a load breakpoint that only triggers when a load of |
6050 | the specified dll (or any dll, if no pathname was specified) | |
6051 | occurs. */ | |
53a5351d JM |
6052 | SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, |
6053 | dll_pathname, cond_string); | |
c906108c | 6054 | } |
c5aa993b | 6055 | |
c906108c | 6056 | static void |
fba45db2 | 6057 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6058 | { |
c5aa993b JM |
6059 | char *dll_pathname = NULL; |
6060 | char *cond_string = NULL; | |
6061 | ||
c906108c | 6062 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6063 | |
c906108c | 6064 | /* The allowed syntax is: |
c5aa993b JM |
6065 | catch unload |
6066 | catch unload if <cond> | |
6067 | catch unload <filename> | |
6068 | catch unload <filename> if <cond> | |
6069 | ||
c906108c SS |
6070 | The user is not allowed to specify the <filename> after an |
6071 | if clause. | |
c5aa993b | 6072 | |
c906108c | 6073 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6074 | |
c906108c SS |
6075 | First, check if there's an if clause. If so, then there |
6076 | cannot be a filename. */ | |
6077 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6078 | |
c906108c SS |
6079 | /* If there was an if clause, then there cannot be a filename. |
6080 | Else, there might be a filename and an if clause. */ | |
6081 | if (cond_string == NULL) | |
6082 | { | |
6083 | dll_pathname = ep_parse_optional_filename (&arg); | |
6084 | ep_skip_leading_whitespace (&arg); | |
6085 | cond_string = ep_parse_optional_if_clause (&arg); | |
6086 | } | |
c5aa993b | 6087 | |
c906108c SS |
6088 | if ((*arg != '\0') && !isspace (*arg)) |
6089 | error ("Junk at end of arguments."); | |
c5aa993b | 6090 | |
c906108c SS |
6091 | /* Create an unload breakpoint that only triggers when an unload of |
6092 | the specified dll (or any dll, if no pathname was specified) | |
6093 | occurs. */ | |
53a5351d JM |
6094 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, |
6095 | dll_pathname, cond_string); | |
c906108c SS |
6096 | } |
6097 | #endif /* SOLIB_ADD */ | |
6098 | ||
6099 | /* Commands to deal with catching exceptions. */ | |
6100 | ||
6101 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6102 | exception event callback */ |
c906108c SS |
6103 | |
6104 | static void | |
fba45db2 KB |
6105 | create_exception_catchpoint (int tempflag, char *cond_string, |
6106 | enum exception_event_kind ex_event, | |
6107 | struct symtab_and_line *sal) | |
c906108c | 6108 | { |
c5aa993b | 6109 | struct breakpoint *b; |
c5aa993b | 6110 | int thread = -1; /* All threads. */ |
c906108c | 6111 | |
c5aa993b | 6112 | if (!sal) /* no exception support? */ |
c906108c SS |
6113 | return; |
6114 | ||
6115 | b = set_raw_breakpoint (*sal); | |
6116 | set_breakpoint_count (breakpoint_count + 1); | |
6117 | b->number = breakpoint_count; | |
6118 | b->cond = NULL; | |
53a5351d JM |
6119 | b->cond_string = (cond_string == NULL) ? |
6120 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
6121 | b->thread = thread; |
6122 | b->addr_string = NULL; | |
6123 | b->enable = enabled; | |
6124 | b->disposition = tempflag ? del : donttouch; | |
6125 | switch (ex_event) | |
6126 | { | |
c5aa993b JM |
6127 | case EX_EVENT_THROW: |
6128 | b->type = bp_catch_throw; | |
6129 | break; | |
6130 | case EX_EVENT_CATCH: | |
6131 | b->type = bp_catch_catch; | |
6132 | break; | |
6133 | default: /* error condition */ | |
6134 | b->type = bp_none; | |
6135 | b->enable = disabled; | |
6136 | error ("Internal error -- invalid catchpoint kind"); | |
c906108c SS |
6137 | } |
6138 | mention (b); | |
6139 | } | |
6140 | ||
c5aa993b | 6141 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6142 | |
6143 | static void | |
fba45db2 KB |
6144 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6145 | int tempflag, int from_tty) | |
c906108c | 6146 | { |
c5aa993b JM |
6147 | char *cond_string = NULL; |
6148 | struct symtab_and_line *sal = NULL; | |
6149 | ||
c906108c | 6150 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6151 | |
c906108c SS |
6152 | cond_string = ep_parse_optional_if_clause (&arg); |
6153 | ||
6154 | if ((*arg != '\0') && !isspace (*arg)) | |
6155 | error ("Junk at end of arguments."); | |
6156 | ||
6157 | if ((ex_event != EX_EVENT_THROW) && | |
6158 | (ex_event != EX_EVENT_CATCH)) | |
6159 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6160 | ||
6161 | /* See if we can find a callback routine */ | |
6162 | sal = target_enable_exception_callback (ex_event, 1); | |
6163 | ||
c5aa993b | 6164 | if (sal) |
c906108c SS |
6165 | { |
6166 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6167 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6168 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6169 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6170 | else |
53a5351d | 6171 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6172 | } |
c5aa993b | 6173 | else |
c906108c SS |
6174 | { |
6175 | /* No callbacks from runtime system for exceptions. | |
6176 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
6177 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
6178 | { |
6179 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
6180 | } | |
c906108c | 6181 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
6182 | { |
6183 | /* Set a breakpoint on __raise_exception () */ | |
6184 | ||
53a5351d JM |
6185 | warning ("Unsupported with this platform/compiler combination."); |
6186 | warning ("Perhaps you can achieve the effect you want by setting"); | |
6187 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 6188 | } |
c906108c SS |
6189 | } |
6190 | } | |
6191 | ||
6192 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6193 | inside a catch_errors */ | |
6194 | ||
6195 | static int | |
fba45db2 | 6196 | cover_target_enable_exception_callback (PTR arg) |
c906108c SS |
6197 | { |
6198 | args_for_catchpoint_enable *args = arg; | |
6199 | struct symtab_and_line *sal; | |
6200 | sal = target_enable_exception_callback (args->kind, args->enable); | |
6201 | if (sal == NULL) | |
6202 | return 0; | |
6203 | else if (sal == (struct symtab_and_line *) -1) | |
6204 | return -1; | |
6205 | else | |
c5aa993b | 6206 | return 1; /*is valid */ |
c906108c SS |
6207 | } |
6208 | ||
6209 | ||
6210 | ||
6211 | /* This is the original v.4.16 and earlier version of the | |
6212 | catch_command_1() function. Now that other flavours of "catch" | |
6213 | have been introduced, and since exception handling can be handled | |
6214 | in other ways (through target ops) also, this is used only for the | |
6215 | GNU C++ exception handling system. | |
6216 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
6217 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
6218 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 6219 | |
c906108c SS |
6220 | Called from catch_exception_command_1 () */ |
6221 | ||
6222 | ||
6223 | static void | |
fba45db2 | 6224 | handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty) |
c906108c SS |
6225 | { |
6226 | /* First, translate ARG into something we can deal with in terms | |
6227 | of breakpoints. */ | |
6228 | ||
6229 | struct symtabs_and_lines sals; | |
6230 | struct symtab_and_line sal; | |
6231 | register struct expression *cond = 0; | |
6232 | register struct breakpoint *b; | |
6233 | char *save_arg; | |
6234 | int i; | |
6235 | ||
c5aa993b | 6236 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6237 | |
6238 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
6239 | are breakpointed. */ | |
6240 | ||
c5aa993b | 6241 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
6242 | && (arg[2] == ' ' || arg[2] == '\t'))) |
6243 | { | |
6244 | /* Grab all active catch clauses. */ | |
6245 | sals = get_catch_sals (0); | |
6246 | } | |
6247 | else | |
6248 | { | |
6249 | /* Grab selected catch clauses. */ | |
6250 | error ("catch NAME not implemented"); | |
6251 | ||
6252 | #if 0 | |
6253 | /* Not sure why this code has been disabled. I'm leaving | |
6254 | it disabled. We can never come here now anyway | |
6255 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 6256 | pai/1997-07-11 */ |
c906108c SS |
6257 | |
6258 | /* This isn't used; I don't know what it was for. */ | |
6259 | sals = map_catch_names (arg, catch_breakpoint); | |
6260 | #endif | |
6261 | } | |
6262 | ||
c5aa993b | 6263 | if (!sals.nelts) |
c906108c SS |
6264 | return; |
6265 | ||
6266 | save_arg = arg; | |
6267 | for (i = 0; i < sals.nelts; i++) | |
6268 | { | |
6269 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 6270 | |
c906108c SS |
6271 | while (arg && *arg) |
6272 | { | |
6273 | if (arg[0] == 'i' && arg[1] == 'f' | |
6274 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 6275 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
6276 | block_for_pc (sals.sals[i].pc), 0); |
6277 | else | |
6278 | error ("Junk at end of arguments."); | |
6279 | } | |
6280 | arg = save_arg; | |
6281 | } | |
6282 | ||
6283 | for (i = 0; i < sals.nelts; i++) | |
6284 | { | |
6285 | sal = sals.sals[i]; | |
6286 | ||
6287 | if (from_tty) | |
6288 | describe_other_breakpoints (sal.pc, sal.section); | |
6289 | ||
6290 | b = set_raw_breakpoint (sal); | |
6291 | set_breakpoint_count (breakpoint_count + 1); | |
6292 | b->number = breakpoint_count; | |
53a5351d JM |
6293 | |
6294 | /* Important -- this is an ordinary breakpoint. For platforms | |
6295 | with callback support for exceptions, | |
6296 | create_exception_catchpoint() will create special bp types | |
6297 | (bp_catch_catch and bp_catch_throw), and there is code in | |
6298 | insert_breakpoints() and elsewhere that depends on that. */ | |
6299 | b->type = bp_breakpoint; | |
c906108c SS |
6300 | |
6301 | b->cond = cond; | |
6302 | b->enable = enabled; | |
6303 | b->disposition = tempflag ? del : donttouch; | |
6304 | ||
6305 | mention (b); | |
6306 | } | |
6307 | ||
6308 | if (sals.nelts > 1) | |
6309 | { | |
53a5351d JM |
6310 | warning ("Multiple breakpoints were set."); |
6311 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 6312 | } |
c5aa993b | 6313 | free ((PTR) sals.sals); |
c906108c SS |
6314 | } |
6315 | ||
6316 | #if 0 | |
6317 | /* This creates a temporary internal breakpoint | |
6318 | just to placate infrun */ | |
6319 | static struct breakpoint * | |
fba45db2 | 6320 | create_temp_exception_breakpoint (CORE_ADDR pc) |
c906108c SS |
6321 | { |
6322 | struct symtab_and_line sal; | |
6323 | struct breakpoint *b; | |
6324 | ||
c5aa993b | 6325 | INIT_SAL (&sal); |
c906108c SS |
6326 | sal.pc = pc; |
6327 | sal.symtab = NULL; | |
6328 | sal.line = 0; | |
6329 | ||
6330 | b = set_raw_breakpoint (sal); | |
6331 | if (!b) | |
6332 | error ("Internal error -- couldn't set temp exception breakpoint"); | |
6333 | ||
6334 | b->type = bp_breakpoint; | |
6335 | b->disposition = del; | |
6336 | b->enable = enabled; | |
6337 | b->silent = 1; | |
6338 | b->number = internal_breakpoint_number--; | |
6339 | return b; | |
6340 | } | |
6341 | #endif | |
6342 | ||
6343 | static void | |
fba45db2 | 6344 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6345 | { |
c5aa993b | 6346 | |
c906108c SS |
6347 | /* The first argument may be an event name, such as "start" or "load". |
6348 | If so, then handle it as such. If it doesn't match an event name, | |
6349 | then attempt to interpret it as an exception name. (This latter is | |
6350 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6351 | |
c906108c | 6352 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6353 | char *arg1_start = arg; |
6354 | char *arg1_end; | |
6355 | int arg1_length; | |
6356 | ||
c906108c SS |
6357 | if (arg1_start == NULL) |
6358 | { | |
c5aa993b | 6359 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6360 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6361 | /* return; */ | |
c5aa993b | 6362 | /* Now, this is not allowed */ |
c906108c SS |
6363 | error ("Catch requires an event name."); |
6364 | ||
6365 | } | |
6366 | arg1_end = ep_find_event_name_end (arg1_start); | |
6367 | if (arg1_end == NULL) | |
6368 | error ("catch requires an event"); | |
6369 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6370 | |
c906108c SS |
6371 | /* Try to match what we found against known event names. */ |
6372 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6373 | { | |
6374 | error ("Catch of signal not yet implemented"); | |
6375 | } | |
6376 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6377 | { | |
53a5351d JM |
6378 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6379 | tempflag, from_tty); | |
c906108c SS |
6380 | } |
6381 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6382 | { | |
53a5351d JM |
6383 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6384 | tempflag, from_tty); | |
c906108c SS |
6385 | } |
6386 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6387 | { | |
6388 | error ("Catch of thread_start not yet implemented"); | |
6389 | } | |
6390 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6391 | { | |
6392 | error ("Catch of thread_exit not yet implemented"); | |
6393 | } | |
6394 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6395 | { | |
6396 | error ("Catch of thread_join not yet implemented"); | |
6397 | } | |
6398 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6399 | { | |
6400 | error ("Catch of start not yet implemented"); | |
6401 | } | |
6402 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6403 | { | |
6404 | error ("Catch of exit not yet implemented"); | |
6405 | } | |
6406 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6407 | { | |
6408 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 6409 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6410 | #else |
6411 | error ("Catch of fork not yet implemented"); | |
6412 | #endif | |
6413 | } | |
6414 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6415 | { | |
6416 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 6417 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6418 | #else |
6419 | error ("Catch of vfork not yet implemented"); | |
6420 | #endif | |
6421 | } | |
6422 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6423 | { | |
6424 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 6425 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6426 | #else |
6427 | error ("Catch of exec not yet implemented"); | |
6428 | #endif | |
6429 | } | |
6430 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6431 | { | |
6432 | #if defined(SOLIB_ADD) | |
c5aa993b | 6433 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6434 | #else |
6435 | error ("Catch of load not implemented"); | |
6436 | #endif | |
6437 | } | |
6438 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6439 | { | |
6440 | #if defined(SOLIB_ADD) | |
c5aa993b | 6441 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6442 | #else |
6443 | error ("Catch of load not implemented"); | |
6444 | #endif | |
6445 | } | |
6446 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6447 | { | |
6448 | error ("Catch of stop not yet implemented"); | |
6449 | } | |
c5aa993b | 6450 | |
c906108c SS |
6451 | /* This doesn't appear to be an event name */ |
6452 | ||
6453 | else | |
6454 | { | |
6455 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6456 | as the name of an exception */ |
c906108c | 6457 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6458 | /* Now this is not allowed */ |
c906108c SS |
6459 | error ("Unknown event kind specified for catch"); |
6460 | ||
6461 | } | |
6462 | } | |
6463 | ||
6464 | /* Used by the gui, could be made a worker for other things. */ | |
6465 | ||
6466 | struct breakpoint * | |
fba45db2 | 6467 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6468 | { |
6469 | struct breakpoint *b; | |
6470 | b = set_raw_breakpoint (sal); | |
6471 | set_breakpoint_count (breakpoint_count + 1); | |
6472 | b->number = breakpoint_count; | |
6473 | b->type = bp_breakpoint; | |
6474 | b->cond = 0; | |
6475 | b->thread = -1; | |
6476 | return b; | |
6477 | } | |
6478 | ||
6479 | #if 0 | |
6480 | /* These aren't used; I don't know what they were for. */ | |
6481 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
6482 | static void | |
fba45db2 | 6483 | disable_catch (char *args) |
c906108c SS |
6484 | { |
6485 | /* Map the disable command to catch clauses described in ARGS. */ | |
6486 | } | |
6487 | ||
6488 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
6489 | static void | |
fba45db2 | 6490 | enable_catch (char *args) |
c906108c SS |
6491 | { |
6492 | /* Map the disable command to catch clauses described in ARGS. */ | |
6493 | } | |
6494 | ||
6495 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
6496 | static void | |
fba45db2 | 6497 | delete_catch (char *args) |
c906108c SS |
6498 | { |
6499 | /* Map the delete command to catch clauses described in ARGS. */ | |
6500 | } | |
6501 | #endif /* 0 */ | |
6502 | ||
6503 | static void | |
fba45db2 | 6504 | catch_command (char *arg, int from_tty) |
c906108c SS |
6505 | { |
6506 | catch_command_1 (arg, 0, from_tty); | |
6507 | } | |
6508 | \f | |
6509 | ||
6510 | static void | |
fba45db2 | 6511 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6512 | { |
6513 | catch_command_1 (arg, 1, from_tty); | |
6514 | } | |
6515 | ||
6516 | ||
6517 | static void | |
fba45db2 | 6518 | clear_command (char *arg, int from_tty) |
c906108c SS |
6519 | { |
6520 | register struct breakpoint *b, *b1; | |
6521 | int default_match; | |
6522 | struct symtabs_and_lines sals; | |
6523 | struct symtab_and_line sal; | |
6524 | register struct breakpoint *found; | |
6525 | int i; | |
6526 | ||
6527 | if (arg) | |
6528 | { | |
6529 | sals = decode_line_spec (arg, 1); | |
6530 | default_match = 0; | |
6531 | } | |
6532 | else | |
6533 | { | |
c5aa993b | 6534 | sals.sals = (struct symtab_and_line *) |
c906108c | 6535 | xmalloc (sizeof (struct symtab_and_line)); |
c5aa993b | 6536 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6537 | sal.line = default_breakpoint_line; |
6538 | sal.symtab = default_breakpoint_symtab; | |
6539 | sal.pc = default_breakpoint_address; | |
6540 | if (sal.symtab == 0) | |
6541 | error ("No source file specified."); | |
6542 | ||
6543 | sals.sals[0] = sal; | |
6544 | sals.nelts = 1; | |
6545 | ||
6546 | default_match = 1; | |
6547 | } | |
6548 | ||
6549 | /* For each line spec given, delete bps which correspond | |
6550 | to it. We do this in two loops: the first loop looks at | |
6551 | the initial bp(s) in the chain which should be deleted, | |
6552 | the second goes down the rest of the chain looking ahead | |
6553 | one so it can take those bps off the chain without messing | |
6554 | up the chain. */ | |
6555 | ||
6556 | ||
6557 | for (i = 0; i < sals.nelts; i++) | |
6558 | { | |
6559 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6560 | If line given (pc == 0), clear all bpts on specified line. |
6561 | If defaulting, clear all bpts on default line | |
c906108c | 6562 | or at default pc. |
c5aa993b JM |
6563 | |
6564 | defaulting sal.pc != 0 tests to do | |
6565 | ||
6566 | 0 1 pc | |
6567 | 1 1 pc _and_ line | |
6568 | 0 0 line | |
6569 | 1 0 <can't happen> */ | |
c906108c SS |
6570 | |
6571 | sal = sals.sals[i]; | |
6572 | found = (struct breakpoint *) 0; | |
6573 | ||
6574 | ||
6575 | while (breakpoint_chain | |
c5aa993b JM |
6576 | /* Why don't we check here that this is not |
6577 | a watchpoint, etc., as we do below? | |
6578 | I can't make it fail, but don't know | |
6579 | what's stopping the failure: a watchpoint | |
6580 | of the same address as "sal.pc" should | |
6581 | wind up being deleted. */ | |
6582 | ||
6583 | && (((sal.pc && (breakpoint_chain->address == sal.pc)) && | |
6584 | (overlay_debugging == 0 || | |
6585 | breakpoint_chain->section == sal.section)) | |
6586 | || ((default_match || (0 == sal.pc)) | |
6587 | && breakpoint_chain->source_file != NULL | |
6588 | && sal.symtab != NULL | |
6589 | && STREQ (breakpoint_chain->source_file, sal.symtab->filename) | |
6590 | && breakpoint_chain->line_number == sal.line))) | |
c906108c SS |
6591 | |
6592 | { | |
6593 | b1 = breakpoint_chain; | |
6594 | breakpoint_chain = b1->next; | |
6595 | b1->next = found; | |
6596 | found = b1; | |
6597 | } | |
6598 | ||
6599 | ALL_BREAKPOINTS (b) | |
6600 | ||
c5aa993b JM |
6601 | while (b->next |
6602 | && b->next->type != bp_none | |
6603 | && b->next->type != bp_watchpoint | |
6604 | && b->next->type != bp_hardware_watchpoint | |
6605 | && b->next->type != bp_read_watchpoint | |
6606 | && b->next->type != bp_access_watchpoint | |
6607 | && (((sal.pc && (b->next->address == sal.pc)) && | |
6608 | (overlay_debugging == 0 || | |
6609 | b->next->section == sal.section)) | |
6610 | || ((default_match || (0 == sal.pc)) | |
6611 | && b->next->source_file != NULL | |
6612 | && sal.symtab != NULL | |
6613 | && STREQ (b->next->source_file, sal.symtab->filename) | |
6614 | && b->next->line_number == sal.line))) | |
c906108c SS |
6615 | |
6616 | ||
c5aa993b JM |
6617 | { |
6618 | b1 = b->next; | |
6619 | b->next = b1->next; | |
6620 | b1->next = found; | |
6621 | found = b1; | |
6622 | } | |
c906108c SS |
6623 | |
6624 | if (found == 0) | |
6625 | { | |
6626 | if (arg) | |
6627 | error ("No breakpoint at %s.", arg); | |
6628 | else | |
6629 | error ("No breakpoint at this line."); | |
6630 | } | |
6631 | ||
c5aa993b JM |
6632 | if (found->next) |
6633 | from_tty = 1; /* Always report if deleted more than one */ | |
6634 | if (from_tty) | |
6635 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
c906108c SS |
6636 | breakpoints_changed (); |
6637 | while (found) | |
6638 | { | |
c5aa993b JM |
6639 | if (from_tty) |
6640 | printf_unfiltered ("%d ", found->number); | |
c906108c SS |
6641 | b1 = found->next; |
6642 | delete_breakpoint (found); | |
6643 | found = b1; | |
6644 | } | |
c5aa993b JM |
6645 | if (from_tty) |
6646 | putchar_unfiltered ('\n'); | |
c906108c | 6647 | } |
c5aa993b | 6648 | free ((PTR) sals.sals); |
c906108c SS |
6649 | } |
6650 | \f | |
6651 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6652 | all breakpoints that are marked for deletion, whether hit or not. | |
6653 | This is called after any breakpoint is hit, or after errors. */ | |
6654 | ||
6655 | void | |
fba45db2 | 6656 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6657 | { |
6658 | struct breakpoint *b, *temp; | |
6659 | ||
6660 | for (; bs; bs = bs->next) | |
c5aa993b | 6661 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
c906108c SS |
6662 | && bs->stop) |
6663 | delete_breakpoint (bs->breakpoint_at); | |
6664 | ||
6665 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
6666 | { |
6667 | if (b->disposition == del_at_next_stop) | |
6668 | delete_breakpoint (b); | |
6669 | } | |
c906108c SS |
6670 | } |
6671 | ||
53a5351d JM |
6672 | /* Delete a breakpoint and clean up all traces of it in the data |
6673 | structures. */ | |
c906108c SS |
6674 | |
6675 | void | |
fba45db2 | 6676 | delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
6677 | { |
6678 | register struct breakpoint *b; | |
6679 | register bpstat bs; | |
6680 | ||
6681 | if (bpt == NULL) | |
6682 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6683 | ||
6684 | ||
6685 | /* Has this bp already been deleted? This can happen because multiple | |
6686 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6687 | ||
6688 | One example of this happening is a watchpoint's scope bp. When the | |
6689 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6690 | delete it. We also delete its scope bp. But the scope bp is marked | |
6691 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6692 | checked for auto-deleting bp's, which are deleted. | |
6693 | ||
6694 | A real solution to this problem might involve reference counts in bp's, | |
6695 | and/or giving them pointers back to their referencing bpstat's, and | |
6696 | teaching delete_breakpoint to only free a bp's storage when no more | |
6697 | references were extent. A cheaper bandaid was chosen. */ | |
6698 | if (bpt->type == bp_none) | |
6699 | return; | |
6700 | ||
6701 | if (delete_breakpoint_hook) | |
6702 | delete_breakpoint_hook (bpt); | |
104c1213 | 6703 | breakpoint_delete_event (bpt->number); |
c906108c SS |
6704 | |
6705 | if (bpt->inserted) | |
6706 | remove_breakpoint (bpt, mark_uninserted); | |
c5aa993b | 6707 | |
c906108c SS |
6708 | if (breakpoint_chain == bpt) |
6709 | breakpoint_chain = bpt->next; | |
6710 | ||
6711 | /* If we have callback-style exception catchpoints, don't go through | |
6712 | the adjustments to the C++ runtime library etc. if the inferior | |
6713 | isn't actually running. target_enable_exception_callback for a | |
6714 | null target ops vector gives an undesirable error message, so we | |
6715 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6716 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6717 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6718 | { | |
6719 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
6720 | static char message[sizeof (message1) + 30]; | |
6721 | args_for_catchpoint_enable args; | |
6722 | ||
53a5351d JM |
6723 | /* Format possible error msg */ |
6724 | sprintf (message, message1, bpt->number); | |
6725 | args.kind = bpt->type == bp_catch_catch ? | |
6726 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
6727 | args.enable = 0; |
6728 | catch_errors (cover_target_enable_exception_callback, &args, | |
6729 | message, RETURN_MASK_ALL); | |
6730 | } | |
6731 | ||
6732 | ||
6733 | ALL_BREAKPOINTS (b) | |
6734 | if (b->next == bpt) | |
c5aa993b JM |
6735 | { |
6736 | b->next = bpt->next; | |
6737 | break; | |
6738 | } | |
c906108c SS |
6739 | |
6740 | /* Before turning off the visuals for the bp, check to see that | |
6741 | there are no other bps at the same address. */ | |
6742 | if (tui_version) | |
6743 | { | |
6744 | int clearIt; | |
6745 | ||
6746 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
6747 | { |
6748 | clearIt = (b->address != bpt->address); | |
6749 | if (!clearIt) | |
6750 | break; | |
6751 | } | |
c906108c SS |
6752 | |
6753 | if (clearIt) | |
c5aa993b JM |
6754 | { |
6755 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, bpt, 0)); | |
6756 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
6757 | } | |
c906108c SS |
6758 | } |
6759 | ||
6760 | check_duplicates (bpt->address, bpt->section); | |
6761 | /* If this breakpoint was inserted, and there is another breakpoint | |
6762 | at the same address, we need to insert the other breakpoint. */ | |
6763 | if (bpt->inserted | |
6764 | && bpt->type != bp_hardware_watchpoint | |
6765 | && bpt->type != bp_read_watchpoint | |
6766 | && bpt->type != bp_access_watchpoint | |
6767 | && bpt->type != bp_catch_fork | |
6768 | && bpt->type != bp_catch_vfork | |
6769 | && bpt->type != bp_catch_exec) | |
6770 | { | |
6771 | ALL_BREAKPOINTS (b) | |
6772 | if (b->address == bpt->address | |
6773 | && b->section == bpt->section | |
6774 | && !b->duplicate | |
6775 | && b->enable != disabled | |
6776 | && b->enable != shlib_disabled | |
6777 | && b->enable != call_disabled) | |
c5aa993b JM |
6778 | { |
6779 | int val; | |
53a5351d | 6780 | |
c2c6d25f JM |
6781 | /* We should never reach this point if there is a permanent |
6782 | breakpoint at the same address as the one being deleted. | |
6783 | If there is a permanent breakpoint somewhere, it should | |
6784 | always be the only one inserted. */ | |
6785 | if (b->enable == permanent) | |
6786 | internal_error ("another breakpoint was inserted on top of " | |
6787 | "a permanent breakpoint"); | |
6788 | ||
53a5351d JM |
6789 | if (b->type == bp_hardware_breakpoint) |
6790 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
6791 | else | |
6792 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
6793 | ||
c5aa993b JM |
6794 | if (val != 0) |
6795 | { | |
6796 | target_terminal_ours_for_output (); | |
53a5351d | 6797 | warning ("Cannot insert breakpoint %d:", b->number); |
c5aa993b JM |
6798 | memory_error (val, b->address); /* which bombs us out */ |
6799 | } | |
6800 | else | |
6801 | b->inserted = 1; | |
6802 | } | |
c906108c SS |
6803 | } |
6804 | ||
6805 | free_command_lines (&bpt->commands); | |
6806 | if (bpt->cond) | |
6807 | free (bpt->cond); | |
6808 | if (bpt->cond_string != NULL) | |
6809 | free (bpt->cond_string); | |
6810 | if (bpt->addr_string != NULL) | |
6811 | free (bpt->addr_string); | |
6812 | if (bpt->exp != NULL) | |
6813 | free (bpt->exp); | |
6814 | if (bpt->exp_string != NULL) | |
6815 | free (bpt->exp_string); | |
6816 | if (bpt->val != NULL) | |
6817 | value_free (bpt->val); | |
6818 | if (bpt->source_file != NULL) | |
6819 | free (bpt->source_file); | |
6820 | if (bpt->dll_pathname != NULL) | |
6821 | free (bpt->dll_pathname); | |
6822 | if (bpt->triggered_dll_pathname != NULL) | |
6823 | free (bpt->triggered_dll_pathname); | |
6824 | if (bpt->exec_pathname != NULL) | |
6825 | free (bpt->exec_pathname); | |
6826 | ||
6827 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6828 | /* FIXME, how can we find all bpstat's? | |
6829 | We just check stop_bpstat for now. */ | |
6830 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6831 | if (bs->breakpoint_at == bpt) | |
6832 | { | |
6833 | bs->breakpoint_at = NULL; | |
6834 | ||
6835 | /* we'd call bpstat_clear_actions, but that free's stuff and due | |
6836 | to the multiple pointers pointing to one item with no | |
6837 | reference counts found anywhere through out the bpstat's (how | |
6838 | do you spell fragile?), we don't want to free things twice -- | |
6839 | better a memory leak than a corrupt malloc pool! */ | |
6840 | bs->commands = NULL; | |
6841 | bs->old_val = NULL; | |
6842 | } | |
6843 | /* On the chance that someone will soon try again to delete this same | |
6844 | bp, we mark it as deleted before freeing its storage. */ | |
6845 | bpt->type = bp_none; | |
6846 | ||
c5aa993b | 6847 | free ((PTR) bpt); |
c906108c SS |
6848 | } |
6849 | ||
4d6140d9 AC |
6850 | static void |
6851 | do_delete_breakpoint_cleanup (void *b) | |
6852 | { | |
6853 | delete_breakpoint (b); | |
6854 | } | |
6855 | ||
6856 | struct cleanup * | |
6857 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6858 | { | |
6859 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6860 | } | |
6861 | ||
6862 | struct cleanup * | |
6863 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6864 | { | |
6865 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6866 | } | |
6867 | ||
c906108c | 6868 | void |
fba45db2 | 6869 | delete_command (char *arg, int from_tty) |
c906108c SS |
6870 | { |
6871 | struct breakpoint *b, *temp; | |
6872 | ||
6873 | if (arg == 0) | |
6874 | { | |
6875 | int breaks_to_delete = 0; | |
6876 | ||
6877 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6878 | Do not delete internal or call-dummy breakpoints, these |
6879 | have to be deleted with an explicit breakpoint number argument. */ | |
6880 | ALL_BREAKPOINTS (b) | |
6881 | { | |
6882 | if (b->type != bp_call_dummy && | |
6883 | b->type != bp_shlib_event && | |
c4093a6a | 6884 | b->type != bp_thread_event && |
c5aa993b JM |
6885 | b->number >= 0) |
6886 | breaks_to_delete = 1; | |
6887 | } | |
c906108c SS |
6888 | |
6889 | /* Ask user only if there are some breakpoints to delete. */ | |
6890 | if (!from_tty | |
6891 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6892 | { | |
c5aa993b JM |
6893 | ALL_BREAKPOINTS_SAFE (b, temp) |
6894 | { | |
6895 | if (b->type != bp_call_dummy && | |
6896 | b->type != bp_shlib_event && | |
c4093a6a | 6897 | b->type != bp_thread_event && |
c5aa993b JM |
6898 | b->number >= 0) |
6899 | delete_breakpoint (b); | |
6900 | } | |
c906108c SS |
6901 | } |
6902 | } | |
6903 | else | |
6904 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6905 | } | |
6906 | ||
6907 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6908 | The value we return ends up being the return value from catch_errors. | |
6909 | Unused in this case. */ | |
6910 | ||
6911 | static int | |
fba45db2 | 6912 | breakpoint_re_set_one (PTR bint) |
c906108c | 6913 | { |
53a5351d JM |
6914 | /* get past catch_errs */ |
6915 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6916 | struct value *mark; |
6917 | int i; | |
6918 | struct symtabs_and_lines sals; | |
6919 | char *s; | |
6920 | enum enable save_enable; | |
6921 | ||
6922 | switch (b->type) | |
6923 | { | |
6924 | case bp_none: | |
53a5351d JM |
6925 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6926 | b->number); | |
c906108c SS |
6927 | return 0; |
6928 | case bp_breakpoint: | |
6929 | case bp_hardware_breakpoint: | |
6930 | case bp_catch_load: | |
6931 | case bp_catch_unload: | |
6932 | if (b->addr_string == NULL) | |
6933 | { | |
6934 | /* Anything without a string can't be re-set. */ | |
6935 | delete_breakpoint (b); | |
6936 | return 0; | |
6937 | } | |
6938 | /* In case we have a problem, disable this breakpoint. We'll restore | |
c5aa993b | 6939 | its status if we succeed. */ |
c906108c SS |
6940 | save_enable = b->enable; |
6941 | b->enable = disabled; | |
6942 | ||
6943 | set_language (b->language); | |
6944 | input_radix = b->input_radix; | |
6945 | s = b->addr_string; | |
c5aa993b | 6946 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6947 | for (i = 0; i < sals.nelts; i++) |
6948 | { | |
6949 | resolve_sal_pc (&sals.sals[i]); | |
6950 | ||
6951 | /* Reparse conditions, they might contain references to the | |
6952 | old symtab. */ | |
6953 | if (b->cond_string != NULL) | |
6954 | { | |
6955 | s = b->cond_string; | |
6956 | if (b->cond) | |
c5aa993b | 6957 | free ((PTR) b->cond); |
c906108c SS |
6958 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
6959 | } | |
6960 | ||
c5aa993b | 6961 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 6962 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
6963 | /* ...or new and old breakpoints both have source files, and |
6964 | the source file name or the line number changes... */ | |
c906108c SS |
6965 | || (b->source_file != NULL |
6966 | && sals.sals[i].symtab != NULL | |
6967 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
6968 | || b->line_number != sals.sals[i].line) | |
c906108c | 6969 | ) |
c5aa993b JM |
6970 | /* ...or we switch between having a source file and not having |
6971 | one. */ | |
6972 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
6973 | ) | |
c906108c SS |
6974 | { |
6975 | if (b->source_file != NULL) | |
6976 | free (b->source_file); | |
6977 | if (sals.sals[i].symtab == NULL) | |
6978 | b->source_file = NULL; | |
6979 | else | |
6980 | b->source_file = | |
6981 | savestring (sals.sals[i].symtab->filename, | |
6982 | strlen (sals.sals[i].symtab->filename)); | |
6983 | b->line_number = sals.sals[i].line; | |
6984 | b->address = sals.sals[i].pc; | |
6985 | ||
c5aa993b JM |
6986 | /* Used to check for duplicates here, but that can |
6987 | cause trouble, as it doesn't check for disable | |
6988 | breakpoints. */ | |
c906108c SS |
6989 | |
6990 | mention (b); | |
6991 | ||
6992 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 6993 | rather than once for every breakpoint. */ |
c906108c SS |
6994 | breakpoints_changed (); |
6995 | } | |
6996 | b->section = sals.sals[i].section; | |
6997 | b->enable = save_enable; /* Restore it, this worked. */ | |
6998 | ||
6999 | ||
c5aa993b | 7000 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7001 | can be used. */ |
c5aa993b | 7002 | check_duplicates (b->address, b->section); |
c906108c SS |
7003 | |
7004 | } | |
c5aa993b | 7005 | free ((PTR) sals.sals); |
c906108c SS |
7006 | break; |
7007 | ||
7008 | case bp_watchpoint: | |
7009 | case bp_hardware_watchpoint: | |
7010 | case bp_read_watchpoint: | |
7011 | case bp_access_watchpoint: | |
7012 | innermost_block = NULL; | |
53a5351d JM |
7013 | /* The issue arises of what context to evaluate this in. The |
7014 | same one as when it was set, but what does that mean when | |
7015 | symbols have been re-read? We could save the filename and | |
7016 | functionname, but if the context is more local than that, the | |
7017 | best we could do would be something like how many levels deep | |
7018 | and which index at that particular level, but that's going to | |
7019 | be less stable than filenames or function names. */ | |
7020 | ||
c906108c SS |
7021 | /* So for now, just use a global context. */ |
7022 | if (b->exp) | |
c5aa993b | 7023 | free ((PTR) b->exp); |
c906108c SS |
7024 | b->exp = parse_expression (b->exp_string); |
7025 | b->exp_valid_block = innermost_block; | |
7026 | mark = value_mark (); | |
7027 | if (b->val) | |
7028 | value_free (b->val); | |
7029 | b->val = evaluate_expression (b->exp); | |
7030 | release_value (b->val); | |
7031 | if (VALUE_LAZY (b->val)) | |
7032 | value_fetch_lazy (b->val); | |
7033 | ||
7034 | if (b->cond_string != NULL) | |
7035 | { | |
7036 | s = b->cond_string; | |
7037 | if (b->cond) | |
c5aa993b JM |
7038 | free ((PTR) b->cond); |
7039 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); | |
c906108c SS |
7040 | } |
7041 | if (b->enable == enabled) | |
7042 | mention (b); | |
7043 | value_free_to_mark (mark); | |
7044 | break; | |
c5aa993b JM |
7045 | case bp_catch_catch: |
7046 | case bp_catch_throw: | |
c906108c | 7047 | break; |
c5aa993b JM |
7048 | /* We needn't really do anything to reset these, since the mask |
7049 | that requests them is unaffected by e.g., new libraries being | |
7050 | loaded. */ | |
c906108c SS |
7051 | case bp_catch_fork: |
7052 | case bp_catch_vfork: | |
7053 | case bp_catch_exec: | |
7054 | break; | |
c5aa993b | 7055 | |
c906108c SS |
7056 | default: |
7057 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7058 | /* fall through */ | |
c5aa993b JM |
7059 | /* Delete longjmp breakpoints, they will be reset later by |
7060 | breakpoint_re_set. */ | |
c906108c SS |
7061 | case bp_longjmp: |
7062 | case bp_longjmp_resume: | |
7063 | delete_breakpoint (b); | |
7064 | break; | |
7065 | ||
c5aa993b JM |
7066 | /* This breakpoint is special, it's set up when the inferior |
7067 | starts and we really don't want to touch it. */ | |
c906108c SS |
7068 | case bp_shlib_event: |
7069 | ||
c4093a6a JM |
7070 | /* Like bp_shlib_event, this breakpoint type is special. |
7071 | Once it is set up, we do not want to touch it. */ | |
7072 | case bp_thread_event: | |
7073 | ||
c5aa993b JM |
7074 | /* Keep temporary breakpoints, which can be encountered when we step |
7075 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7076 | Otherwise these should have been blown away via the cleanup chain | |
7077 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7078 | case bp_until: |
7079 | case bp_finish: | |
7080 | case bp_watchpoint_scope: | |
7081 | case bp_call_dummy: | |
7082 | case bp_step_resume: | |
7083 | break; | |
7084 | } | |
7085 | ||
7086 | return 0; | |
7087 | } | |
7088 | ||
7089 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7090 | void | |
fba45db2 | 7091 | breakpoint_re_set (void) |
c906108c SS |
7092 | { |
7093 | struct breakpoint *b, *temp; | |
7094 | enum language save_language; | |
7095 | int save_input_radix; | |
7096 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
7097 | char message[sizeof (message1) + 30 /* slop */ ]; |
7098 | ||
c906108c SS |
7099 | save_language = current_language->la_language; |
7100 | save_input_radix = input_radix; | |
7101 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7102 | { |
53a5351d JM |
7103 | /* Format possible error msg */ |
7104 | sprintf (message, message1, b->number); | |
c5aa993b JM |
7105 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
7106 | } | |
c906108c SS |
7107 | set_language (save_language); |
7108 | input_radix = save_input_radix; | |
7109 | ||
7110 | #ifdef GET_LONGJMP_TARGET | |
7111 | create_longjmp_breakpoint ("longjmp"); | |
7112 | create_longjmp_breakpoint ("_longjmp"); | |
7113 | create_longjmp_breakpoint ("siglongjmp"); | |
7114 | create_longjmp_breakpoint ("_siglongjmp"); | |
7115 | create_longjmp_breakpoint (NULL); | |
7116 | #endif | |
7117 | ||
7118 | #if 0 | |
7119 | /* Took this out (temporarily at least), since it produces an extra | |
7120 | blank line at startup. This messes up the gdbtests. -PB */ | |
7121 | /* Blank line to finish off all those mention() messages we just printed. */ | |
7122 | printf_filtered ("\n"); | |
7123 | #endif | |
7124 | } | |
7125 | \f | |
7126 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
7127 | If from_tty is nonzero, it prints a message to that effect, | |
7128 | which ends with a period (no newline). */ | |
7129 | ||
7130 | /* Reset the thread number of this breakpoint: | |
7131 | ||
7132 | - If the breakpoint is for all threads, leave it as-is. | |
7133 | - Else, reset it to the current thread for inferior_pid. */ | |
7134 | void | |
fba45db2 | 7135 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7136 | { |
7137 | if (b->thread != -1) | |
7138 | { | |
7139 | if (in_thread_list (inferior_pid)) | |
c5aa993b | 7140 | b->thread = pid_to_thread_id (inferior_pid); |
c906108c SS |
7141 | } |
7142 | } | |
7143 | ||
7144 | void | |
fba45db2 | 7145 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c SS |
7146 | { |
7147 | register struct breakpoint *b; | |
7148 | ||
7149 | if (count < 0) | |
7150 | count = 0; | |
7151 | ||
7152 | ALL_BREAKPOINTS (b) | |
7153 | if (b->number == bptnum) | |
c5aa993b JM |
7154 | { |
7155 | b->ignore_count = count; | |
7156 | if (!from_tty) | |
c906108c | 7157 | return; |
c5aa993b JM |
7158 | else if (count == 0) |
7159 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7160 | bptnum); | |
7161 | else if (count == 1) | |
7162 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7163 | bptnum); | |
7164 | else | |
7165 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7166 | count, bptnum); | |
7167 | breakpoints_changed (); | |
7168 | return; | |
7169 | } | |
c906108c SS |
7170 | |
7171 | error ("No breakpoint number %d.", bptnum); | |
7172 | } | |
7173 | ||
7174 | /* Clear the ignore counts of all breakpoints. */ | |
7175 | void | |
fba45db2 | 7176 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7177 | { |
7178 | struct breakpoint *b; | |
7179 | ||
7180 | ALL_BREAKPOINTS (b) | |
7181 | b->ignore_count = 0; | |
7182 | } | |
7183 | ||
7184 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7185 | ||
7186 | static void | |
fba45db2 | 7187 | ignore_command (char *args, int from_tty) |
c906108c SS |
7188 | { |
7189 | char *p = args; | |
7190 | register int num; | |
7191 | ||
7192 | if (p == 0) | |
7193 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7194 | |
c906108c | 7195 | num = get_number (&p); |
5c44784c JM |
7196 | if (num == 0) |
7197 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7198 | if (*p == 0) |
7199 | error ("Second argument (specified ignore-count) is missing."); | |
7200 | ||
7201 | set_ignore_count (num, | |
7202 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7203 | from_tty); | |
7204 | printf_filtered ("\n"); | |
7205 | breakpoints_changed (); | |
7206 | } | |
7207 | \f | |
7208 | /* Call FUNCTION on each of the breakpoints | |
7209 | whose numbers are given in ARGS. */ | |
7210 | ||
7211 | static void | |
7212 | map_breakpoint_numbers (args, function) | |
7213 | char *args; | |
507f3c78 | 7214 | void (*function) (struct breakpoint *); |
c906108c SS |
7215 | { |
7216 | register char *p = args; | |
7217 | char *p1; | |
7218 | register int num; | |
5c44784c | 7219 | register struct breakpoint *b, *tmp; |
11cf8741 | 7220 | int match; |
c906108c SS |
7221 | |
7222 | if (p == 0) | |
7223 | error_no_arg ("one or more breakpoint numbers"); | |
7224 | ||
7225 | while (*p) | |
7226 | { | |
11cf8741 | 7227 | match = 0; |
c906108c | 7228 | p1 = p; |
c5aa993b | 7229 | |
5c44784c JM |
7230 | num = get_number_or_range (&p1); |
7231 | if (num == 0) | |
c5aa993b | 7232 | { |
5c44784c JM |
7233 | warning ("bad breakpoint number at or near '%s'", p); |
7234 | } | |
7235 | else | |
7236 | { | |
7237 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7238 | if (b->number == num) | |
7239 | { | |
7240 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7241 | match = 1; |
5c44784c JM |
7242 | function (b); |
7243 | if (related_breakpoint) | |
7244 | function (related_breakpoint); | |
11cf8741 | 7245 | break; |
5c44784c | 7246 | } |
11cf8741 JM |
7247 | if (match == 0) |
7248 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7249 | } |
c906108c SS |
7250 | p = p1; |
7251 | } | |
7252 | } | |
7253 | ||
7254 | void | |
fba45db2 | 7255 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7256 | { |
7257 | /* Never disable a watchpoint scope breakpoint; we want to | |
7258 | hit them when we leave scope so we can delete both the | |
7259 | watchpoint and its scope breakpoint at that time. */ | |
7260 | if (bpt->type == bp_watchpoint_scope) | |
7261 | return; | |
7262 | ||
c2c6d25f JM |
7263 | /* You can't disable permanent breakpoints. */ |
7264 | if (bpt->enable == permanent) | |
7265 | return; | |
7266 | ||
c906108c SS |
7267 | bpt->enable = disabled; |
7268 | ||
7269 | check_duplicates (bpt->address, bpt->section); | |
7270 | ||
7271 | if (modify_breakpoint_hook) | |
7272 | modify_breakpoint_hook (bpt); | |
104c1213 | 7273 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7274 | } |
7275 | ||
7276 | /* ARGSUSED */ | |
7277 | static void | |
fba45db2 | 7278 | disable_command (char *args, int from_tty) |
c906108c SS |
7279 | { |
7280 | register struct breakpoint *bpt; | |
7281 | if (args == 0) | |
7282 | ALL_BREAKPOINTS (bpt) | |
7283 | switch (bpt->type) | |
c5aa993b JM |
7284 | { |
7285 | case bp_none: | |
53a5351d JM |
7286 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7287 | bpt->number); | |
c5aa993b JM |
7288 | continue; |
7289 | case bp_breakpoint: | |
7290 | case bp_catch_load: | |
7291 | case bp_catch_unload: | |
7292 | case bp_catch_fork: | |
7293 | case bp_catch_vfork: | |
7294 | case bp_catch_exec: | |
7295 | case bp_catch_catch: | |
7296 | case bp_catch_throw: | |
7297 | case bp_hardware_breakpoint: | |
7298 | case bp_watchpoint: | |
7299 | case bp_hardware_watchpoint: | |
7300 | case bp_read_watchpoint: | |
7301 | case bp_access_watchpoint: | |
7302 | disable_breakpoint (bpt); | |
7303 | default: | |
7304 | continue; | |
7305 | } | |
c906108c SS |
7306 | else |
7307 | map_breakpoint_numbers (args, disable_breakpoint); | |
7308 | } | |
7309 | ||
7310 | static void | |
fba45db2 | 7311 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7312 | { |
7313 | struct frame_info *save_selected_frame = NULL; | |
7314 | int save_selected_frame_level = -1; | |
7315 | int target_resources_ok, other_type_used; | |
7316 | struct value *mark; | |
7317 | ||
7318 | if (bpt->type == bp_hardware_breakpoint) | |
7319 | { | |
7320 | int i; | |
c5aa993b | 7321 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7322 | target_resources_ok = |
7323 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7324 | i + 1, 0); | |
c906108c | 7325 | if (target_resources_ok == 0) |
c5aa993b | 7326 | error ("No hardware breakpoint support in the target."); |
c906108c | 7327 | else if (target_resources_ok < 0) |
c5aa993b | 7328 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7329 | } |
7330 | ||
c2c6d25f JM |
7331 | if (bpt->enable != permanent) |
7332 | bpt->enable = enabled; | |
c906108c SS |
7333 | bpt->disposition = disposition; |
7334 | check_duplicates (bpt->address, bpt->section); | |
7335 | breakpoints_changed (); | |
7336 | ||
53a5351d JM |
7337 | if (bpt->type == bp_watchpoint || |
7338 | bpt->type == bp_hardware_watchpoint || | |
7339 | bpt->type == bp_read_watchpoint || | |
7340 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7341 | { |
7342 | if (bpt->exp_valid_block != NULL) | |
7343 | { | |
7344 | struct frame_info *fr = | |
7345 | ||
c5aa993b JM |
7346 | /* Ensure that we have the current frame. Else, this |
7347 | next query may pessimistically be answered as, "No, | |
7348 | not within current scope". */ | |
7349 | get_current_frame (); | |
7350 | fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
c906108c SS |
7351 | if (fr == NULL) |
7352 | { | |
7353 | printf_filtered ("\ | |
7354 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7355 | is valid is not currently in scope.\n", bpt->number); | |
7356 | bpt->enable = disabled; | |
7357 | return; | |
7358 | } | |
7359 | ||
7360 | save_selected_frame = selected_frame; | |
7361 | save_selected_frame_level = selected_frame_level; | |
7362 | select_frame (fr, -1); | |
7363 | } | |
7364 | ||
7365 | value_free (bpt->val); | |
7366 | mark = value_mark (); | |
7367 | bpt->val = evaluate_expression (bpt->exp); | |
7368 | release_value (bpt->val); | |
7369 | if (VALUE_LAZY (bpt->val)) | |
7370 | value_fetch_lazy (bpt->val); | |
7371 | ||
7372 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7373 | bpt->type == bp_read_watchpoint || |
7374 | bpt->type == bp_access_watchpoint) | |
7375 | { | |
7376 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7377 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7378 | ||
7379 | /* Hack around 'unused var' error for some targets here */ | |
7380 | (void) mem_cnt, i; | |
7381 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7382 | bpt->type, i + mem_cnt, other_type_used); | |
7383 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7384 | bp_watchpoint in the following condition */ | |
7385 | if (target_resources_ok < 0) | |
7386 | { | |
7387 | printf_filtered ("\ | |
c906108c SS |
7388 | Cannot enable watchpoint %d because target watch resources\n\ |
7389 | have been allocated for other watchpoints.\n", bpt->number); | |
c5aa993b JM |
7390 | bpt->enable = disabled; |
7391 | value_free_to_mark (mark); | |
7392 | return; | |
7393 | } | |
7394 | } | |
c906108c SS |
7395 | |
7396 | if (save_selected_frame_level >= 0) | |
c6902688 | 7397 | select_frame (save_selected_frame, save_selected_frame_level); |
c906108c SS |
7398 | value_free_to_mark (mark); |
7399 | } | |
7400 | if (modify_breakpoint_hook) | |
7401 | modify_breakpoint_hook (bpt); | |
104c1213 | 7402 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7403 | } |
7404 | ||
7405 | void | |
fba45db2 | 7406 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7407 | { |
7408 | do_enable_breakpoint (bpt, bpt->disposition); | |
7409 | } | |
7410 | ||
7411 | /* The enable command enables the specified breakpoints (or all defined | |
7412 | breakpoints) so they once again become (or continue to be) effective | |
7413 | in stopping the inferior. */ | |
7414 | ||
7415 | /* ARGSUSED */ | |
7416 | static void | |
fba45db2 | 7417 | enable_command (char *args, int from_tty) |
c906108c SS |
7418 | { |
7419 | register struct breakpoint *bpt; | |
7420 | if (args == 0) | |
7421 | ALL_BREAKPOINTS (bpt) | |
7422 | switch (bpt->type) | |
c5aa993b JM |
7423 | { |
7424 | case bp_none: | |
53a5351d JM |
7425 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7426 | bpt->number); | |
c5aa993b JM |
7427 | continue; |
7428 | case bp_breakpoint: | |
7429 | case bp_catch_load: | |
7430 | case bp_catch_unload: | |
7431 | case bp_catch_fork: | |
7432 | case bp_catch_vfork: | |
7433 | case bp_catch_exec: | |
7434 | case bp_catch_catch: | |
7435 | case bp_catch_throw: | |
7436 | case bp_hardware_breakpoint: | |
7437 | case bp_watchpoint: | |
7438 | case bp_hardware_watchpoint: | |
7439 | case bp_read_watchpoint: | |
7440 | case bp_access_watchpoint: | |
7441 | enable_breakpoint (bpt); | |
7442 | default: | |
7443 | continue; | |
7444 | } | |
c906108c SS |
7445 | else |
7446 | map_breakpoint_numbers (args, enable_breakpoint); | |
7447 | } | |
7448 | ||
7449 | static void | |
fba45db2 | 7450 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7451 | { |
7452 | do_enable_breakpoint (bpt, disable); | |
7453 | } | |
7454 | ||
7455 | /* ARGSUSED */ | |
7456 | static void | |
fba45db2 | 7457 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7458 | { |
7459 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7460 | } | |
7461 | ||
7462 | static void | |
fba45db2 | 7463 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7464 | { |
7465 | do_enable_breakpoint (bpt, del); | |
7466 | } | |
7467 | ||
7468 | /* ARGSUSED */ | |
7469 | static void | |
fba45db2 | 7470 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7471 | { |
7472 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7473 | } | |
7474 | \f | |
7475 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7476 | ||
7477 | struct symtabs_and_lines | |
fba45db2 | 7478 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7479 | { |
7480 | struct symtabs_and_lines sals; | |
7481 | if (string == 0) | |
7482 | error ("Empty line specification."); | |
7483 | if (default_breakpoint_valid) | |
7484 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7485 | default_breakpoint_symtab, |
7486 | default_breakpoint_line, | |
c5aa993b | 7487 | (char ***) NULL); |
c906108c SS |
7488 | else |
7489 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 7490 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7491 | if (*string) |
7492 | error ("Junk at end of line specification: %s", string); | |
7493 | return sals; | |
7494 | } | |
7495 | \f | |
7496 | void | |
fba45db2 | 7497 | _initialize_breakpoint (void) |
c906108c SS |
7498 | { |
7499 | struct cmd_list_element *c; | |
7500 | ||
7501 | breakpoint_chain = 0; | |
7502 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7503 | before a breakpoint is set. */ | |
7504 | breakpoint_count = 0; | |
7505 | ||
7506 | add_com ("ignore", class_breakpoint, ignore_command, | |
7507 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7508 | Usage is `ignore N COUNT'."); | |
7509 | if (xdb_commands) | |
c5aa993b | 7510 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7511 | |
7512 | add_com ("commands", class_breakpoint, commands_command, | |
7513 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7514 | Give breakpoint number as argument after \"commands\".\n\ | |
7515 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7516 | The commands themselves follow starting on the next line.\n\ | |
7517 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7518 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7519 | then no output is printed when it is hit, except what the commands print."); | |
7520 | ||
7521 | add_com ("condition", class_breakpoint, condition_command, | |
7522 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7523 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
7524 | expression to be evaluated whenever breakpoint N is reached. "); | |
7525 | ||
7526 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
7527 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
7528 | Like \"break\" except the breakpoint is only temporary,\n\ | |
7529 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7530 | by using \"enable delete\" on the breakpoint number."); | |
c5aa993b JM |
7531 | add_com ("txbreak", class_breakpoint, tbreak_at_finish_command, |
7532 | "Set temporary breakpoint at procedure exit. Either there should\n\ | |
c906108c SS |
7533 | be no argument or the argument must be a depth.\n"); |
7534 | ||
7535 | add_com ("hbreak", class_breakpoint, hbreak_command, | |
7536 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7537 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
7538 | some target hardware may not have this support."); | |
7539 | ||
7540 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
7541 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7542 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
7543 | so it will be deleted when hit."); | |
7544 | ||
7545 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7546 | "Enable some breakpoints.\n\ | |
7547 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7548 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7549 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7550 | With a subcommand you can enable temporarily.", | |
7551 | &enablelist, "enable ", 1, &cmdlist); | |
7552 | if (xdb_commands) | |
c5aa993b JM |
7553 | add_com ("ab", class_breakpoint, enable_command, |
7554 | "Enable some breakpoints.\n\ | |
c906108c SS |
7555 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7556 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7557 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7558 | With a subcommand you can enable temporarily."); | |
7559 | ||
7560 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7561 | ||
7562 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7563 | "Enable some breakpoints.\n\ |
c906108c SS |
7564 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7565 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7566 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7567 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7568 | |
7569 | add_cmd ("once", no_class, enable_once_command, | |
7570 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7571 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7572 | &enablebreaklist); | |
7573 | ||
7574 | add_cmd ("delete", no_class, enable_delete_command, | |
7575 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7576 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7577 | &enablebreaklist); | |
7578 | ||
7579 | add_cmd ("delete", no_class, enable_delete_command, | |
7580 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7581 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7582 | &enablelist); | |
7583 | ||
7584 | add_cmd ("once", no_class, enable_once_command, | |
7585 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7586 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7587 | &enablelist); | |
7588 | ||
7589 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7590 | "Disable some breakpoints.\n\ |
c906108c SS |
7591 | Arguments are breakpoint numbers with spaces in between.\n\ |
7592 | To disable all breakpoints, give no argument.\n\ | |
7593 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7594 | &disablelist, "disable ", 1, &cmdlist); | |
7595 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7596 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7597 | if (xdb_commands) | |
c5aa993b JM |
7598 | add_com ("sb", class_breakpoint, disable_command, |
7599 | "Disable some breakpoints.\n\ | |
c906108c SS |
7600 | Arguments are breakpoint numbers with spaces in between.\n\ |
7601 | To disable all breakpoints, give no argument.\n\ | |
7602 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7603 | ||
7604 | add_cmd ("breakpoints", class_alias, disable_command, | |
7605 | "Disable some breakpoints.\n\ | |
7606 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7607 | To disable all breakpoints, give no argument.\n\ | |
7608 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7609 | This command may be abbreviated \"disable\".", | |
7610 | &disablelist); | |
7611 | ||
7612 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7613 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7614 | Arguments are breakpoint numbers with spaces in between.\n\ |
7615 | To delete all breakpoints, give no argument.\n\ | |
7616 | \n\ | |
7617 | Also a prefix command for deletion of other GDB objects.\n\ | |
7618 | The \"unset\" command is also an alias for \"delete\".", | |
7619 | &deletelist, "delete ", 1, &cmdlist); | |
7620 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7621 | if (xdb_commands) | |
7622 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7623 | "Delete some breakpoints.\n\ |
c906108c SS |
7624 | Arguments are breakpoint numbers with spaces in between.\n\ |
7625 | To delete all breakpoints, give no argument.\n"); | |
7626 | ||
7627 | add_cmd ("breakpoints", class_alias, delete_command, | |
7628 | "Delete some breakpoints or auto-display expressions.\n\ | |
7629 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7630 | To delete all breakpoints, give no argument.\n\ | |
7631 | This command may be abbreviated \"delete\".", | |
7632 | &deletelist); | |
7633 | ||
7634 | add_com ("clear", class_breakpoint, clear_command, | |
7635 | concat ("Clear breakpoint at specified line or function.\n\ | |
7636 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7637 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7638 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7639 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7640 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7641 | is executing in.\n\ |
7642 | \n\ | |
7643 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7644 | ||
7645 | add_com ("break", class_breakpoint, break_command, | |
7646 | concat ("Set breakpoint at specified line or function.\n\ | |
7647 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7648 | If line number is specified, break at start of code for that line.\n\ | |
7649 | If function is specified, break at start of code for that function.\n\ | |
7650 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7651 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7652 | This is useful for breaking on return to a stack frame.\n\ |
7653 | \n\ | |
7654 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7655 | \n\ | |
7656 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7657 | add_com_alias ("b", "break", class_run, 1); | |
7658 | add_com_alias ("br", "break", class_run, 1); | |
7659 | add_com_alias ("bre", "break", class_run, 1); | |
7660 | add_com_alias ("brea", "break", class_run, 1); | |
7661 | ||
c5aa993b JM |
7662 | add_com ("xbreak", class_breakpoint, break_at_finish_command, |
7663 | concat ("Set breakpoint at procedure exit. \n\ | |
c906108c SS |
7664 | Argument may be function name, or \"*\" and an address.\n\ |
7665 | If function is specified, break at end of code for that function.\n\ | |
7666 | If an address is specified, break at the end of the function that contains \n\ | |
7667 | that exact address.\n", | |
c5aa993b | 7668 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7669 | This is useful for breaking on return to a stack frame.\n\ |
7670 | \n\ | |
7671 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7672 | \n\ | |
7673 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7674 | add_com_alias ("xb", "xbreak", class_breakpoint, 1); | |
7675 | add_com_alias ("xbr", "xbreak", class_breakpoint, 1); | |
7676 | add_com_alias ("xbre", "xbreak", class_breakpoint, 1); | |
7677 | add_com_alias ("xbrea", "xbreak", class_breakpoint, 1); | |
7678 | ||
7679 | if (xdb_commands) | |
7680 | { | |
7681 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7682 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
7683 | add_com ("bx", class_breakpoint, break_at_finish_at_depth_command, | |
c5aa993b | 7684 | "Set breakpoint at procedure exit. Either there should\n\ |
c906108c SS |
7685 | be no argument or the argument must be a depth.\n"); |
7686 | } | |
7687 | ||
7688 | if (dbx_commands) | |
7689 | { | |
c5aa993b JM |
7690 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7691 | "Break in function/address or break at a line in the current file.", | |
7692 | &stoplist, "stop ", 1, &cmdlist); | |
7693 | add_cmd ("in", class_breakpoint, stopin_command, | |
7694 | "Break in function or address.\n", &stoplist); | |
7695 | add_cmd ("at", class_breakpoint, stopat_command, | |
7696 | "Break at a line in the current file.\n", &stoplist); | |
7697 | add_com ("status", class_info, breakpoints_info, | |
7698 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7699 | The \"Type\" column indicates one of:\n\ |
7700 | \tbreakpoint - normal breakpoint\n\ | |
7701 | \twatchpoint - watchpoint\n\ | |
7702 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7703 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7704 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7705 | address and file/line number respectively.\n\n", | |
c5aa993b | 7706 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7707 | are set to the address of the last breakpoint listed.\n\n\ |
7708 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7709 | breakpoint set.", NULL)); | |
7710 | } | |
7711 | ||
7712 | add_info ("breakpoints", breakpoints_info, | |
7713 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7714 | The \"Type\" column indicates one of:\n\ | |
7715 | \tbreakpoint - normal breakpoint\n\ | |
7716 | \twatchpoint - watchpoint\n\ | |
7717 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7718 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7719 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7720 | address and file/line number respectively.\n\n", | |
c5aa993b | 7721 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7722 | are set to the address of the last breakpoint listed.\n\n\ |
7723 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7724 | breakpoint set.", NULL)); | |
7725 | ||
7726 | if (xdb_commands) | |
c5aa993b JM |
7727 | add_com ("lb", class_breakpoint, breakpoints_info, |
7728 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7729 | The \"Type\" column indicates one of:\n\ |
7730 | \tbreakpoint - normal breakpoint\n\ | |
7731 | \twatchpoint - watchpoint\n\ | |
7732 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7733 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7734 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7735 | address and file/line number respectively.\n\n", | |
c5aa993b | 7736 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7737 | are set to the address of the last breakpoint listed.\n\n\ |
7738 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7739 | breakpoint set.", NULL)); | |
7740 | ||
c906108c | 7741 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7742 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7743 | The \"Type\" column indicates one of:\n\ |
7744 | \tbreakpoint - normal breakpoint\n\ | |
7745 | \twatchpoint - watchpoint\n\ | |
7746 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7747 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7748 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7749 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7750 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7751 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7752 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7753 | address and file/line number respectively.\n\n", | |
c5aa993b | 7754 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7755 | are set to the address of the last breakpoint listed.\n\n\ |
7756 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7757 | breakpoint set.", NULL), | |
7758 | &maintenanceinfolist); | |
7759 | ||
c906108c | 7760 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7761 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7762 | Raised signals may be caught:\n\ |
7763 | \tcatch signal - all signals\n\ | |
7764 | \tcatch signal <signame> - a particular signal\n\ | |
7765 | Raised exceptions may be caught:\n\ | |
7766 | \tcatch throw - all exceptions, when thrown\n\ | |
7767 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7768 | \tcatch catch - all exceptions, when caught\n\ | |
7769 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7770 | Thread or process events may be caught:\n\ | |
7771 | \tcatch thread_start - any threads, just after creation\n\ | |
7772 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7773 | \tcatch thread_join - any threads, just after joins\n\ | |
7774 | Process events may be caught:\n\ | |
7775 | \tcatch start - any processes, just after creation\n\ | |
7776 | \tcatch exit - any processes, just before expiration\n\ | |
7777 | \tcatch fork - calls to fork()\n\ | |
7778 | \tcatch vfork - calls to vfork()\n\ | |
7779 | \tcatch exec - calls to exec()\n\ | |
7780 | Dynamically-linked library events may be caught:\n\ | |
7781 | \tcatch load - loads of any library\n\ | |
7782 | \tcatch load <libname> - loads of a particular library\n\ | |
7783 | \tcatch unload - unloads of any library\n\ | |
7784 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7785 | The act of your program's execution stopping may also be caught:\n\ | |
7786 | \tcatch stop\n\n\ | |
7787 | C++ exceptions may be caught:\n\ | |
7788 | \tcatch throw - all exceptions, when thrown\n\ | |
7789 | \tcatch catch - all exceptions, when caught\n\ | |
7790 | \n\ | |
7791 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7792 | after a fork or vfork is caught.\n\n\ | |
7793 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7794 | |
c906108c | 7795 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7796 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7797 | Args like \"catch\" command.\n\ |
7798 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7799 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7800 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b JM |
7801 | |
7802 | add_com ("watch", class_breakpoint, watch_command, | |
c906108c SS |
7803 | "Set a watchpoint for an expression.\n\ |
7804 | A watchpoint stops execution of your program whenever the value of\n\ | |
7805 | an expression changes."); | |
7806 | ||
7807 | add_com ("rwatch", class_breakpoint, rwatch_command, | |
7808 | "Set a read watchpoint for an expression.\n\ | |
7809 | A watchpoint stops execution of your program whenever the value of\n\ | |
7810 | an expression is read."); | |
7811 | ||
7812 | add_com ("awatch", class_breakpoint, awatch_command, | |
7813 | "Set a watchpoint for an expression.\n\ | |
7814 | A watchpoint stops execution of your program whenever the value of\n\ | |
7815 | an expression is either read or written."); | |
7816 | ||
7817 | add_info ("watchpoints", breakpoints_info, | |
7818 | "Synonym for ``info breakpoints''."); | |
7819 | ||
7820 | ||
7821 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7822 | (char *) &can_use_hw_watchpoints, |
7823 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7824 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7825 | such is available. (However, any hardware watchpoints that were\n\ | |
7826 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7827 | hardware.)", | |
c5aa993b | 7828 | &setlist); |
c906108c SS |
7829 | add_show_from_set (c, &showlist); |
7830 | ||
7831 | can_use_hw_watchpoints = 1; | |
7832 | } |