Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
b6ba6518 KB |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
3 | 1996, 1997, 1998, 1999, 2000, 2001 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" | |
c5f0f3d0 | 42 | #include "linespec.h" |
8b93c638 JM |
43 | #ifdef UI_OUT |
44 | #include "ui-out.h" | |
45 | #endif | |
c906108c | 46 | |
104c1213 JM |
47 | #include "gdb-events.h" |
48 | ||
c906108c SS |
49 | /* Prototypes for local functions. */ |
50 | ||
c2c6d25f JM |
51 | static void until_break_command_continuation (struct continuation_arg *arg); |
52 | ||
a14ed312 | 53 | static void catch_command_1 (char *, int, int); |
c906108c | 54 | |
a14ed312 | 55 | static void enable_delete_command (char *, int); |
c906108c | 56 | |
a14ed312 | 57 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 58 | |
a14ed312 | 59 | static void enable_once_command (char *, int); |
c906108c | 60 | |
a14ed312 | 61 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 62 | |
a14ed312 | 63 | static void disable_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void enable_command (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 68 | |
a14ed312 | 69 | static void ignore_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static int breakpoint_re_set_one (PTR); |
c906108c | 72 | |
a14ed312 | 73 | static void clear_command (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static void catch_command (char *, int); |
c906108c | 76 | |
a14ed312 | 77 | static void handle_gnu_4_16_catch_command (char *, int, int); |
c906108c | 78 | |
a14ed312 | 79 | static struct symtabs_and_lines get_catch_sals (int); |
c906108c | 80 | |
a14ed312 | 81 | static void watch_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 84 | |
a14ed312 KB |
85 | static void break_at_finish_command (char *, int); |
86 | static void break_at_finish_at_depth_command (char *, int); | |
7a292a7a | 87 | |
a14ed312 | 88 | void tbreak_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void tbreak_at_finish_command (char *, int); |
7a292a7a | 91 | |
a14ed312 | 92 | static void break_command_1 (char *, int, int); |
c906108c | 93 | |
a14ed312 | 94 | static void mention (struct breakpoint *); |
c906108c | 95 | |
a14ed312 | 96 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line); |
c906108c | 97 | |
a14ed312 | 98 | static void check_duplicates (CORE_ADDR, asection *); |
c906108c | 99 | |
a14ed312 | 100 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 101 | |
a14ed312 | 102 | static void breakpoints_info (char *, int); |
c906108c | 103 | |
a14ed312 | 104 | static void breakpoint_1 (int, int); |
c906108c | 105 | |
a14ed312 | 106 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 107 | |
a14ed312 | 108 | static int breakpoint_cond_eval (PTR); |
c906108c | 109 | |
a14ed312 | 110 | static void cleanup_executing_breakpoints (PTR); |
c906108c | 111 | |
a14ed312 | 112 | static void commands_command (char *, int); |
c906108c | 113 | |
a14ed312 | 114 | static void condition_command (char *, int); |
c906108c | 115 | |
a14ed312 | 116 | static int get_number_trailer (char **, int); |
c906108c | 117 | |
a14ed312 | 118 | void set_breakpoint_count (int); |
c906108c SS |
119 | |
120 | #if 0 | |
a14ed312 | 121 | static struct breakpoint *create_temp_exception_breakpoint (CORE_ADDR); |
c906108c SS |
122 | #endif |
123 | ||
c5aa993b JM |
124 | typedef enum |
125 | { | |
126 | mark_inserted, | |
127 | mark_uninserted | |
128 | } | |
129 | insertion_state_t; | |
c906108c | 130 | |
a14ed312 | 131 | static int remove_breakpoint (struct breakpoint *, insertion_state_t); |
c906108c | 132 | |
a14ed312 | 133 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
134 | |
135 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 136 | |
c5aa993b JM |
137 | typedef struct |
138 | { | |
139 | enum exception_event_kind kind; | |
140 | int enable; | |
141 | } | |
142 | args_for_catchpoint_enable; | |
c906108c | 143 | |
a14ed312 | 144 | static int watchpoint_check (PTR); |
c906108c | 145 | |
a14ed312 | 146 | static int cover_target_enable_exception_callback (PTR); |
c906108c | 147 | |
a14ed312 | 148 | static void maintenance_info_breakpoints (char *, int); |
c906108c SS |
149 | |
150 | #ifdef GET_LONGJMP_TARGET | |
a14ed312 | 151 | static void create_longjmp_breakpoint (char *); |
c906108c SS |
152 | #endif |
153 | ||
a14ed312 | 154 | static int hw_breakpoint_used_count (void); |
c906108c | 155 | |
a14ed312 | 156 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 157 | |
a14ed312 | 158 | static void hbreak_command (char *, int); |
c906108c | 159 | |
a14ed312 | 160 | static void thbreak_command (char *, int); |
c906108c | 161 | |
a14ed312 | 162 | static void watch_command_1 (char *, int, int); |
c906108c | 163 | |
a14ed312 | 164 | static void rwatch_command (char *, int); |
c906108c | 165 | |
a14ed312 | 166 | static void awatch_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 169 | |
a14ed312 KB |
170 | static void solib_load_unload_1 (char *hookname, |
171 | int tempflag, | |
172 | char *dll_pathname, | |
173 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 174 | |
a14ed312 KB |
175 | static void create_fork_vfork_event_catchpoint (int tempflag, |
176 | char *cond_string, | |
177 | enum bptype bp_kind); | |
7a292a7a | 178 | |
a14ed312 KB |
179 | static void break_at_finish_at_depth_command_1 (char *arg, |
180 | int flag, int from_tty); | |
7a292a7a | 181 | |
a14ed312 | 182 | static void break_at_finish_command_1 (char *arg, int flag, int from_tty); |
7a292a7a | 183 | |
a14ed312 | 184 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 185 | |
a14ed312 | 186 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 187 | |
a14ed312 | 188 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 189 | |
a14ed312 | 190 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 191 | |
a14ed312 | 192 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 193 | |
a14ed312 | 194 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 195 | |
e514a9d6 | 196 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
a14ed312 | 197 | static void catch_exec_command_1 (char *arg, int tempflag, int from_tty); |
e514a9d6 | 198 | #endif |
7a292a7a | 199 | |
d85310f7 MS |
200 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
201 | enum exception_event_kind ex_event, | |
202 | struct symtab_and_line *sal); | |
7a292a7a | 203 | |
d85310f7 MS |
204 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
205 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 206 | |
a14ed312 | 207 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 208 | |
a14ed312 | 209 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 210 | |
c906108c SS |
211 | /* Prototypes for exported functions. */ |
212 | ||
a14ed312 | 213 | static void awatch_command (char *, int); |
c906108c | 214 | |
a14ed312 | 215 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c SS |
216 | |
217 | /* If FALSE, gdb will not use hardware support for watchpoints, even | |
218 | if such is available. */ | |
219 | static int can_use_hw_watchpoints; | |
220 | ||
a14ed312 | 221 | void _initialize_breakpoint (void); |
c906108c | 222 | |
a14ed312 | 223 | void set_breakpoint_count (int); |
c906108c | 224 | |
c5aa993b | 225 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 226 | |
c906108c | 227 | static int internal_breakpoint_number = -1; |
c906108c SS |
228 | |
229 | /* Are we executing breakpoint commands? */ | |
230 | static int executing_breakpoint_commands; | |
231 | ||
232 | /* Walk the following statement or block through all breakpoints. | |
233 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
234 | breakpoint. */ | |
235 | ||
5c44784c | 236 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 237 | |
5c44784c JM |
238 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
239 | for (B = breakpoint_chain; \ | |
240 | B ? (TMP=B->next, 1): 0; \ | |
241 | B = TMP) | |
c906108c SS |
242 | |
243 | /* True if SHIFT_INST_REGS defined, false otherwise. */ | |
244 | ||
245 | int must_shift_inst_regs = | |
246 | #if defined(SHIFT_INST_REGS) | |
247 | 1 | |
248 | #else | |
249 | 0 | |
250 | #endif | |
c5aa993b | 251 | ; |
c906108c SS |
252 | |
253 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ | |
254 | ||
255 | int show_breakpoint_hit_counts = 1; | |
256 | ||
257 | /* Chain of all breakpoints defined. */ | |
258 | ||
259 | struct breakpoint *breakpoint_chain; | |
260 | ||
261 | /* Number of last breakpoint made. */ | |
262 | ||
263 | int breakpoint_count; | |
264 | ||
c5aa993b JM |
265 | /* Pointer to current exception event record */ |
266 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
267 | |
268 | /* Indicator of whether exception catchpoints should be nuked | |
269 | between runs of a program */ | |
270 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 271 | |
c906108c SS |
272 | /* Indicator of when exception catchpoints set-up should be |
273 | reinitialized -- e.g. when program is re-run */ | |
274 | int exception_support_initialized = 0; | |
275 | ||
276 | /* This function returns a pointer to the string representation of the | |
277 | pathname of the dynamically-linked library that has just been | |
278 | loaded. | |
279 | ||
280 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
281 | or undefined results are guaranteed. | |
282 | ||
283 | This string's contents are only valid immediately after the | |
284 | inferior has stopped in the dynamic linker hook, and becomes | |
285 | invalid as soon as the inferior is continued. Clients should make | |
286 | a copy of this string if they wish to continue the inferior and | |
287 | then access the string. */ | |
288 | ||
289 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
290 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
291 | #endif | |
292 | ||
293 | /* This function returns a pointer to the string representation of the | |
294 | pathname of the dynamically-linked library that has just been | |
295 | unloaded. | |
296 | ||
297 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
298 | TRUE, or undefined results are guaranteed. | |
299 | ||
300 | This string's contents are only valid immediately after the | |
301 | inferior has stopped in the dynamic linker hook, and becomes | |
302 | invalid as soon as the inferior is continued. Clients should make | |
303 | a copy of this string if they wish to continue the inferior and | |
304 | then access the string. */ | |
305 | ||
306 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
307 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
308 | #endif | |
309 | ||
310 | /* This function is called by the "catch load" command. It allows the | |
311 | debugger to be notified by the dynamic linker when a specified | |
312 | library file (or any library file, if filename is NULL) is loaded. */ | |
313 | ||
314 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
315 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
316 | error ("catch of library loads not yet implemented on this platform") | |
317 | #endif | |
318 | ||
319 | /* This function is called by the "catch unload" command. It allows | |
320 | the debugger to be notified by the dynamic linker when a specified | |
321 | library file (or any library file, if filename is NULL) is | |
322 | unloaded. */ | |
323 | ||
324 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
325 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
326 | error ("catch of library unloads not yet implemented on this platform") | |
327 | #endif | |
328 | ||
329 | /* Set breakpoint count to NUM. */ | |
330 | ||
331 | void | |
fba45db2 | 332 | set_breakpoint_count (int num) |
c906108c SS |
333 | { |
334 | breakpoint_count = num; | |
335 | set_internalvar (lookup_internalvar ("bpnum"), | |
336 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
337 | } | |
338 | ||
339 | /* Used in run_command to zero the hit count when a new run starts. */ | |
340 | ||
341 | void | |
fba45db2 | 342 | clear_breakpoint_hit_counts (void) |
c906108c SS |
343 | { |
344 | struct breakpoint *b; | |
345 | ||
346 | ALL_BREAKPOINTS (b) | |
347 | b->hit_count = 0; | |
348 | } | |
349 | ||
350 | /* Default address, symtab and line to put a breakpoint at | |
351 | for "break" command with no arg. | |
352 | if default_breakpoint_valid is zero, the other three are | |
353 | not valid, and "break" with no arg is an error. | |
354 | ||
355 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
356 | ||
357 | int default_breakpoint_valid; | |
358 | CORE_ADDR default_breakpoint_address; | |
359 | struct symtab *default_breakpoint_symtab; | |
360 | int default_breakpoint_line; | |
361 | \f | |
362 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
363 | Advance *PP after the string and any trailing whitespace. | |
364 | ||
365 | Currently the string can either be a number or "$" followed by the name | |
366 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
367 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
368 | ||
369 | TRAILER is a character which can be found after the number; most | |
370 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 371 | static int |
fba45db2 | 372 | get_number_trailer (char **pp, int trailer) |
c906108c | 373 | { |
5c44784c | 374 | int retval = 0; /* default */ |
c906108c SS |
375 | char *p = *pp; |
376 | ||
377 | if (p == NULL) | |
378 | /* Empty line means refer to the last breakpoint. */ | |
379 | return breakpoint_count; | |
380 | else if (*p == '$') | |
381 | { | |
382 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 383 | to pass to lookup_internalvar(). */ |
c906108c SS |
384 | char *varname; |
385 | char *start = ++p; | |
386 | value_ptr val; | |
387 | ||
388 | while (isalnum (*p) || *p == '_') | |
389 | p++; | |
390 | varname = (char *) alloca (p - start + 1); | |
391 | strncpy (varname, start, p - start); | |
392 | varname[p - start] = '\0'; | |
393 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
394 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
395 | retval = (int) value_as_long (val); | |
396 | else | |
397 | { | |
398 | printf_filtered ("Convenience variable must have integer value.\n"); | |
399 | retval = 0; | |
400 | } | |
c906108c SS |
401 | } |
402 | else | |
403 | { | |
404 | if (*p == '-') | |
405 | ++p; | |
406 | while (*p >= '0' && *p <= '9') | |
407 | ++p; | |
408 | if (p == *pp) | |
409 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
410 | { |
411 | /* Skip non-numeric token */ | |
412 | while (*p && !isspace((int) *p)) | |
413 | ++p; | |
414 | /* Return zero, which caller must interpret as error. */ | |
415 | retval = 0; | |
416 | } | |
417 | else | |
418 | retval = atoi (*pp); | |
419 | } | |
420 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
421 | { | |
422 | /* Trailing junk: return 0 and let caller print error msg. */ | |
423 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
424 | ++p; | |
425 | retval = 0; | |
c906108c | 426 | } |
c906108c SS |
427 | while (isspace (*p)) |
428 | p++; | |
429 | *pp = p; | |
430 | return retval; | |
431 | } | |
5c44784c | 432 | |
11cf8741 | 433 | |
5c44784c JM |
434 | /* Like get_number_trailer, but don't allow a trailer. */ |
435 | int | |
fba45db2 | 436 | get_number (char **pp) |
5c44784c JM |
437 | { |
438 | return get_number_trailer (pp, '\0'); | |
439 | } | |
440 | ||
441 | /* Parse a number or a range. | |
442 | * A number will be of the form handled by get_number. | |
443 | * A range will be of the form <number1> - <number2>, and | |
444 | * will represent all the integers between number1 and number2, | |
445 | * inclusive. | |
446 | * | |
447 | * While processing a range, this fuction is called iteratively; | |
448 | * At each call it will return the next value in the range. | |
449 | * | |
450 | * At the beginning of parsing a range, the char pointer PP will | |
451 | * be advanced past <number1> and left pointing at the '-' token. | |
452 | * Subsequent calls will not advance the pointer until the range | |
453 | * is completed. The call that completes the range will advance | |
454 | * pointer PP past <number2>. | |
455 | */ | |
456 | ||
457 | int | |
fba45db2 | 458 | get_number_or_range (char **pp) |
5c44784c JM |
459 | { |
460 | static int last_retval, end_value; | |
461 | static char *end_ptr; | |
462 | static int in_range = 0; | |
463 | ||
464 | if (**pp != '-') | |
465 | { | |
466 | /* Default case: pp is pointing either to a solo number, | |
467 | or to the first number of a range. */ | |
468 | last_retval = get_number_trailer (pp, '-'); | |
469 | if (**pp == '-') | |
470 | { | |
471 | char **temp; | |
472 | ||
473 | /* This is the start of a range (<number1> - <number2>). | |
474 | Skip the '-', parse and remember the second number, | |
475 | and also remember the end of the final token. */ | |
476 | ||
477 | temp = &end_ptr; | |
478 | end_ptr = *pp + 1; | |
479 | while (isspace ((int) *end_ptr)) | |
480 | end_ptr++; /* skip white space */ | |
481 | end_value = get_number (temp); | |
482 | if (end_value < last_retval) | |
483 | { | |
484 | error ("inverted range"); | |
485 | } | |
486 | else if (end_value == last_retval) | |
487 | { | |
488 | /* degenerate range (number1 == number2). Advance the | |
489 | token pointer so that the range will be treated as a | |
490 | single number. */ | |
491 | *pp = end_ptr; | |
492 | } | |
493 | else | |
494 | in_range = 1; | |
495 | } | |
496 | } | |
497 | else if (! in_range) | |
498 | error ("negative value"); | |
499 | else | |
500 | { | |
501 | /* pp points to the '-' that betokens a range. All | |
502 | number-parsing has already been done. Return the next | |
503 | integer value (one greater than the saved previous value). | |
504 | Do not advance the token pointer 'pp' until the end of range | |
505 | is reached. */ | |
506 | ||
507 | if (++last_retval == end_value) | |
508 | { | |
509 | /* End of range reached; advance token pointer. */ | |
510 | *pp = end_ptr; | |
511 | in_range = 0; | |
512 | } | |
513 | } | |
514 | return last_retval; | |
515 | } | |
516 | ||
517 | ||
c906108c SS |
518 | \f |
519 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
520 | ||
521 | static void | |
fba45db2 | 522 | condition_command (char *arg, int from_tty) |
c906108c SS |
523 | { |
524 | register struct breakpoint *b; | |
525 | char *p; | |
526 | register int bnum; | |
527 | ||
528 | if (arg == 0) | |
529 | error_no_arg ("breakpoint number"); | |
530 | ||
531 | p = arg; | |
532 | bnum = get_number (&p); | |
5c44784c JM |
533 | if (bnum == 0) |
534 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
535 | |
536 | ALL_BREAKPOINTS (b) | |
537 | if (b->number == bnum) | |
c5aa993b JM |
538 | { |
539 | if (b->cond) | |
540 | { | |
b8c9b27d | 541 | xfree (b->cond); |
c5aa993b JM |
542 | b->cond = 0; |
543 | } | |
544 | if (b->cond_string != NULL) | |
b8c9b27d | 545 | xfree (b->cond_string); |
c906108c | 546 | |
c5aa993b JM |
547 | if (*p == 0) |
548 | { | |
549 | b->cond = 0; | |
550 | b->cond_string = NULL; | |
551 | if (from_tty) | |
552 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
553 | } | |
554 | else | |
555 | { | |
556 | arg = p; | |
557 | /* I don't know if it matters whether this is the string the user | |
558 | typed in or the decompiled expression. */ | |
559 | b->cond_string = savestring (arg, strlen (arg)); | |
560 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); | |
561 | if (*arg) | |
562 | error ("Junk at end of expression"); | |
563 | } | |
564 | breakpoints_changed (); | |
565 | return; | |
566 | } | |
c906108c SS |
567 | |
568 | error ("No breakpoint number %d.", bnum); | |
569 | } | |
570 | ||
571 | /* ARGSUSED */ | |
572 | static void | |
fba45db2 | 573 | commands_command (char *arg, int from_tty) |
c906108c SS |
574 | { |
575 | register struct breakpoint *b; | |
576 | char *p; | |
577 | register int bnum; | |
578 | struct command_line *l; | |
579 | ||
580 | /* If we allowed this, we would have problems with when to | |
581 | free the storage, if we change the commands currently | |
582 | being read from. */ | |
583 | ||
584 | if (executing_breakpoint_commands) | |
585 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
586 | ||
587 | p = arg; | |
588 | bnum = get_number (&p); | |
5c44784c | 589 | |
c906108c SS |
590 | if (p && *p) |
591 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 592 | |
c906108c SS |
593 | ALL_BREAKPOINTS (b) |
594 | if (b->number == bnum) | |
c5aa993b JM |
595 | { |
596 | char tmpbuf[128]; | |
53a5351d JM |
597 | sprintf (tmpbuf, |
598 | "Type commands for when breakpoint %d is hit, one per line.", | |
599 | bnum); | |
c5aa993b JM |
600 | l = read_command_lines (tmpbuf, from_tty); |
601 | free_command_lines (&b->commands); | |
602 | b->commands = l; | |
603 | breakpoints_changed (); | |
604 | return; | |
605 | } | |
c906108c SS |
606 | error ("No breakpoint number %d.", bnum); |
607 | } | |
608 | \f | |
609 | /* Like target_read_memory() but if breakpoints are inserted, return | |
610 | the shadow contents instead of the breakpoints themselves. | |
611 | ||
612 | Read "memory data" from whatever target or inferior we have. | |
613 | Returns zero if successful, errno value if not. EIO is used | |
614 | for address out of bounds. If breakpoints are inserted, returns | |
615 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
616 | ||
617 | int | |
fba45db2 | 618 | read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
619 | { |
620 | int status; | |
621 | struct breakpoint *b; | |
622 | CORE_ADDR bp_addr = 0; | |
623 | int bp_size = 0; | |
624 | ||
625 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
626 | /* No breakpoints on this machine. */ | |
627 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 628 | |
c906108c | 629 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
630 | { |
631 | if (b->type == bp_none) | |
53a5351d JM |
632 | warning ("reading through apparently deleted breakpoint #%d?", |
633 | b->number); | |
c5aa993b JM |
634 | |
635 | /* memory breakpoint? */ | |
636 | if (b->type == bp_watchpoint | |
637 | || b->type == bp_hardware_watchpoint | |
638 | || b->type == bp_read_watchpoint | |
639 | || b->type == bp_access_watchpoint) | |
640 | continue; | |
641 | /* bp in memory? */ | |
642 | if (!b->inserted) | |
643 | continue; | |
644 | /* Addresses and length of the part of the breakpoint that | |
645 | we need to copy. */ | |
646 | /* XXXX The m68k, sh and h8300 have different local and remote | |
647 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
648 | correctly determine the breakpoints memory address and size | |
649 | for these targets. */ | |
650 | bp_addr = b->address; | |
651 | bp_size = 0; | |
652 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
653 | continue; | |
654 | if (bp_size == 0) | |
655 | /* bp isn't valid */ | |
656 | continue; | |
657 | if (bp_addr + bp_size <= memaddr) | |
658 | /* The breakpoint is entirely before the chunk of memory we | |
659 | are reading. */ | |
660 | continue; | |
661 | if (bp_addr >= memaddr + len) | |
662 | /* The breakpoint is entirely after the chunk of memory we are | |
663 | reading. */ | |
664 | continue; | |
665 | /* Copy the breakpoint from the shadow contents, and recurse for | |
666 | the things before and after. */ | |
c906108c | 667 | { |
c5aa993b JM |
668 | /* Offset within shadow_contents. */ |
669 | int bptoffset = 0; | |
c906108c | 670 | |
c5aa993b JM |
671 | if (bp_addr < memaddr) |
672 | { | |
673 | /* Only copy the second part of the breakpoint. */ | |
674 | bp_size -= memaddr - bp_addr; | |
675 | bptoffset = memaddr - bp_addr; | |
676 | bp_addr = memaddr; | |
677 | } | |
678 | ||
679 | if (bp_addr + bp_size > memaddr + len) | |
680 | { | |
681 | /* Only copy the first part of the breakpoint. */ | |
682 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
683 | } | |
684 | ||
685 | memcpy (myaddr + bp_addr - memaddr, | |
686 | b->shadow_contents + bptoffset, bp_size); | |
687 | ||
688 | if (bp_addr > memaddr) | |
689 | { | |
690 | /* Copy the section of memory before the breakpoint. */ | |
691 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
692 | if (status != 0) | |
693 | return status; | |
694 | } | |
695 | ||
696 | if (bp_addr + bp_size < memaddr + len) | |
697 | { | |
698 | /* Copy the section of memory after the breakpoint. */ | |
d85310f7 MS |
699 | status = read_memory_nobpt (bp_addr + bp_size, |
700 | myaddr + bp_addr + bp_size - memaddr, | |
701 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
702 | if (status != 0) |
703 | return status; | |
704 | } | |
705 | return 0; | |
c906108c | 706 | } |
c5aa993b | 707 | } |
c906108c SS |
708 | /* Nothing overlaps. Just call read_memory_noerr. */ |
709 | return target_read_memory (memaddr, myaddr, len); | |
710 | } | |
c906108c | 711 | \f |
c5aa993b | 712 | |
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 | |
7e73cedf | 1269 | presumably 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) | |
d85310f7 | 1615 | || (ep->type == bp_catch_throw); |
c906108c | 1616 | |
c5aa993b | 1617 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1618 | } |
c5aa993b | 1619 | |
c906108c | 1620 | int |
fba45db2 | 1621 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1622 | { |
1623 | return | |
1624 | (ep->type == bp_catch_load) | |
d85310f7 | 1625 | || (ep->type == bp_catch_unload); |
c906108c SS |
1626 | } |
1627 | ||
1628 | int | |
fba45db2 | 1629 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1630 | { |
1631 | return | |
1632 | (ep->type == bp_catch_catch) | |
d85310f7 | 1633 | || (ep->type == bp_catch_throw); |
c906108c SS |
1634 | } |
1635 | ||
1636 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1637 | Also free any storage that is part of a bpstat. */ | |
1638 | ||
1639 | void | |
fba45db2 | 1640 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1641 | { |
1642 | bpstat p; | |
1643 | bpstat q; | |
1644 | ||
1645 | if (bsp == 0) | |
1646 | return; | |
1647 | p = *bsp; | |
1648 | while (p != NULL) | |
1649 | { | |
1650 | q = p->next; | |
1651 | if (p->old_val != NULL) | |
1652 | value_free (p->old_val); | |
b8c9b27d | 1653 | xfree (p); |
c906108c SS |
1654 | p = q; |
1655 | } | |
1656 | *bsp = NULL; | |
1657 | } | |
1658 | ||
1659 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1660 | is part of the bpstat is copied as well. */ | |
1661 | ||
1662 | bpstat | |
fba45db2 | 1663 | bpstat_copy (bpstat bs) |
c906108c SS |
1664 | { |
1665 | bpstat p = NULL; | |
1666 | bpstat tmp; | |
1667 | bpstat retval = NULL; | |
1668 | ||
1669 | if (bs == NULL) | |
1670 | return bs; | |
1671 | ||
1672 | for (; bs != NULL; bs = bs->next) | |
1673 | { | |
1674 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1675 | memcpy (tmp, bs, sizeof (*tmp)); | |
1676 | if (p == NULL) | |
1677 | /* This is the first thing in the chain. */ | |
1678 | retval = tmp; | |
1679 | else | |
1680 | p->next = tmp; | |
1681 | p = tmp; | |
1682 | } | |
1683 | p->next = NULL; | |
1684 | return retval; | |
1685 | } | |
1686 | ||
1687 | /* Find the bpstat associated with this breakpoint */ | |
1688 | ||
1689 | bpstat | |
fba45db2 | 1690 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1691 | { |
c5aa993b JM |
1692 | if (bsp == NULL) |
1693 | return NULL; | |
c906108c | 1694 | |
c5aa993b JM |
1695 | for (; bsp != NULL; bsp = bsp->next) |
1696 | { | |
1697 | if (bsp->breakpoint_at == breakpoint) | |
1698 | return bsp; | |
1699 | } | |
c906108c SS |
1700 | return NULL; |
1701 | } | |
1702 | ||
1703 | /* Find a step_resume breakpoint associated with this bpstat. | |
1704 | (If there are multiple step_resume bp's on the list, this function | |
1705 | will arbitrarily pick one.) | |
1706 | ||
1707 | It is an error to use this function if BPSTAT doesn't contain a | |
1708 | step_resume breakpoint. | |
1709 | ||
1710 | See wait_for_inferior's use of this function. */ | |
1711 | struct breakpoint * | |
fba45db2 | 1712 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c SS |
1713 | { |
1714 | if (bsp == NULL) | |
1715 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1716 | ||
1717 | for (; bsp != NULL; bsp = bsp->next) | |
1718 | { | |
1719 | if ((bsp->breakpoint_at != NULL) && | |
c5aa993b JM |
1720 | (bsp->breakpoint_at->type == bp_step_resume)) |
1721 | return bsp->breakpoint_at; | |
c906108c SS |
1722 | } |
1723 | ||
1724 | error ("Internal error (no step_resume breakpoint found)"); | |
1725 | } | |
1726 | ||
1727 | ||
1728 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1729 | at. *BSP upon return is a bpstat which points to the remaining | |
1730 | breakpoints stopped at (but which is not guaranteed to be good for | |
1731 | anything but further calls to bpstat_num). | |
1732 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1733 | ||
1734 | int | |
fba45db2 | 1735 | bpstat_num (bpstat *bsp) |
c906108c SS |
1736 | { |
1737 | struct breakpoint *b; | |
1738 | ||
1739 | if ((*bsp) == NULL) | |
1740 | return 0; /* No more breakpoint values */ | |
1741 | else | |
1742 | { | |
1743 | b = (*bsp)->breakpoint_at; | |
1744 | *bsp = (*bsp)->next; | |
1745 | if (b == NULL) | |
1746 | return -1; /* breakpoint that's been deleted since */ | |
1747 | else | |
c5aa993b | 1748 | return b->number; /* We have its number */ |
c906108c SS |
1749 | } |
1750 | } | |
1751 | ||
1752 | /* Modify BS so that the actions will not be performed. */ | |
1753 | ||
1754 | void | |
fba45db2 | 1755 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1756 | { |
1757 | for (; bs != NULL; bs = bs->next) | |
1758 | { | |
1759 | bs->commands = NULL; | |
1760 | if (bs->old_val != NULL) | |
1761 | { | |
1762 | value_free (bs->old_val); | |
1763 | bs->old_val = NULL; | |
1764 | } | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1769 | /* ARGSUSED */ | |
1770 | static void | |
fba45db2 | 1771 | cleanup_executing_breakpoints (PTR ignore) |
c906108c SS |
1772 | { |
1773 | executing_breakpoint_commands = 0; | |
1774 | } | |
1775 | ||
1776 | /* Execute all the commands associated with all the breakpoints at this | |
1777 | location. Any of these commands could cause the process to proceed | |
1778 | beyond this point, etc. We look out for such changes by checking | |
1779 | the global "breakpoint_proceeded" after each command. */ | |
1780 | ||
1781 | void | |
fba45db2 | 1782 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1783 | { |
1784 | bpstat bs; | |
1785 | struct cleanup *old_chain; | |
1786 | struct command_line *cmd; | |
1787 | ||
1788 | /* Avoid endless recursion if a `source' command is contained | |
1789 | in bs->commands. */ | |
1790 | if (executing_breakpoint_commands) | |
1791 | return; | |
1792 | ||
1793 | executing_breakpoint_commands = 1; | |
1794 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1795 | ||
1796 | top: | |
1797 | /* Note that (as of this writing), our callers all appear to | |
1798 | be passing us the address of global stop_bpstat. And, if | |
1799 | our calls to execute_control_command cause the inferior to | |
1800 | proceed, that global (and hence, *bsp) will change. | |
1801 | ||
1802 | We must be careful to not touch *bsp unless the inferior | |
1803 | has not proceeded. */ | |
1804 | ||
1805 | /* This pointer will iterate over the list of bpstat's. */ | |
1806 | bs = *bsp; | |
1807 | ||
1808 | breakpoint_proceeded = 0; | |
1809 | for (; bs != NULL; bs = bs->next) | |
1810 | { | |
1811 | cmd = bs->commands; | |
1812 | while (cmd != NULL) | |
1813 | { | |
1814 | execute_control_command (cmd); | |
1815 | ||
1816 | if (breakpoint_proceeded) | |
1817 | break; | |
1818 | else | |
1819 | cmd = cmd->next; | |
1820 | } | |
1821 | if (breakpoint_proceeded) | |
1822 | /* The inferior is proceeded by the command; bomb out now. | |
1823 | The bpstat chain has been blown away by wait_for_inferior. | |
1824 | But since execution has stopped again, there is a new bpstat | |
1825 | to look at, so start over. */ | |
1826 | goto top; | |
1827 | else | |
1828 | bs->commands = NULL; | |
1829 | } | |
1830 | ||
1831 | executing_breakpoint_commands = 0; | |
1832 | discard_cleanups (old_chain); | |
1833 | } | |
1834 | ||
e514a9d6 | 1835 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 1836 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
1837 | by having it set different print_it values. |
1838 | ||
1839 | Current scheme: When we stop, bpstat_print() is called. It loops | |
1840 | through the bpstat list of things causing this stop, calling the | |
1841 | print_bp_stop_message function on each one. The behavior of the | |
1842 | print_bp_stop_message function depends on the print_it field of | |
1843 | bpstat. If such field so indicates, call this function here. | |
1844 | ||
1845 | Return values from this routine (ultimately used by bpstat_print() | |
1846 | and normal_stop() to decide what to do): | |
1847 | PRINT_NOTHING: Means we already printed all we needed to print, | |
1848 | don't print anything else. | |
1849 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
1850 | that something to be followed by a location. | |
1851 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
1852 | that something to be followed by a location. | |
1853 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
1854 | analysis. */ | |
c906108c | 1855 | |
917317f4 | 1856 | static enum print_stop_action |
fba45db2 | 1857 | print_it_typical (bpstat bs) |
c906108c | 1858 | { |
8b93c638 JM |
1859 | #ifdef UI_OUT |
1860 | struct cleanup *old_chain; | |
1861 | struct ui_stream *stb; | |
1862 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 1863 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 1864 | #endif /* UI_OUT */ |
c906108c SS |
1865 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
1866 | which has since been deleted. */ | |
e514a9d6 | 1867 | if (bs->breakpoint_at == NULL) |
917317f4 | 1868 | return PRINT_UNKNOWN; |
c906108c | 1869 | |
e514a9d6 | 1870 | switch (bs->breakpoint_at->type) |
c906108c | 1871 | { |
e514a9d6 JM |
1872 | case bp_breakpoint: |
1873 | case bp_hardware_breakpoint: | |
8b93c638 JM |
1874 | #ifdef UI_OUT |
1875 | annotate_breakpoint (bs->breakpoint_at->number); | |
1876 | ui_out_text (uiout, "\nBreakpoint "); | |
fb40c209 AC |
1877 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
1878 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); | |
8b93c638 JM |
1879 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
1880 | ui_out_text (uiout, ", "); | |
1881 | return PRINT_SRC_AND_LOC; | |
1882 | #else | |
e514a9d6 JM |
1883 | /* I think the user probably only wants to see one breakpoint |
1884 | number, not all of them. */ | |
1885 | annotate_breakpoint (bs->breakpoint_at->number); | |
1886 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); | |
917317f4 | 1887 | return PRINT_SRC_AND_LOC; |
8b93c638 | 1888 | #endif |
e514a9d6 JM |
1889 | break; |
1890 | ||
1891 | case bp_shlib_event: | |
917317f4 JM |
1892 | /* Did we stop because the user set the stop_on_solib_events |
1893 | variable? (If so, we report this as a generic, "Stopped due | |
1894 | to shlib event" message.) */ | |
e514a9d6 JM |
1895 | printf_filtered ("Stopped due to shared library event\n"); |
1896 | return PRINT_NOTHING; | |
1897 | break; | |
1898 | ||
c4093a6a JM |
1899 | case bp_thread_event: |
1900 | /* Not sure how we will get here. | |
1901 | GDB should not stop for these breakpoints. */ | |
1902 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
1903 | return PRINT_NOTHING; | |
1904 | break; | |
1905 | ||
e514a9d6 | 1906 | case bp_catch_load: |
c906108c SS |
1907 | annotate_catchpoint (bs->breakpoint_at->number); |
1908 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
1909 | printf_filtered ("loaded"); |
1910 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1911 | return PRINT_SRC_AND_LOC; | |
1912 | break; | |
1913 | ||
1914 | case bp_catch_unload: | |
1915 | annotate_catchpoint (bs->breakpoint_at->number); | |
1916 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1917 | printf_filtered ("unloaded"); | |
1918 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1919 | return PRINT_SRC_AND_LOC; | |
1920 | break; | |
1921 | ||
1922 | case bp_catch_fork: | |
1923 | annotate_catchpoint (bs->breakpoint_at->number); | |
1924 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1925 | printf_filtered ("forked"); | |
53a5351d JM |
1926 | printf_filtered (" process %d), ", |
1927 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 1928 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1929 | break; |
1930 | ||
1931 | case bp_catch_vfork: | |
1932 | annotate_catchpoint (bs->breakpoint_at->number); | |
1933 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1934 | printf_filtered ("vforked"); | |
1935 | printf_filtered (" process %d), ", | |
1936 | bs->breakpoint_at->forked_inferior_pid); | |
1937 | return PRINT_SRC_AND_LOC; | |
1938 | break; | |
1939 | ||
1940 | case bp_catch_exec: | |
c906108c SS |
1941 | annotate_catchpoint (bs->breakpoint_at->number); |
1942 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
1943 | bs->breakpoint_at->number, |
1944 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 1945 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1946 | break; |
1947 | ||
1948 | case bp_catch_catch: | |
53a5351d JM |
1949 | if (current_exception_event && |
1950 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
1951 | { |
1952 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1953 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
1954 | bs->breakpoint_at->number); | |
c5aa993b JM |
1955 | printf_filtered ("throw location "); |
1956 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1957 | printf_filtered ("%s:%d", | |
1958 | CURRENT_EXCEPTION_THROW_FILE, | |
1959 | CURRENT_EXCEPTION_THROW_LINE); | |
1960 | else | |
1961 | printf_filtered ("unknown"); | |
1962 | ||
1963 | printf_filtered (", catch location "); | |
1964 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1965 | printf_filtered ("%s:%d", | |
1966 | CURRENT_EXCEPTION_CATCH_FILE, | |
1967 | CURRENT_EXCEPTION_CATCH_LINE); | |
1968 | else | |
1969 | printf_filtered ("unknown"); | |
1970 | ||
1971 | printf_filtered ("\n"); | |
e514a9d6 JM |
1972 | /* don't bother to print location frame info */ |
1973 | return PRINT_SRC_ONLY; | |
c5aa993b | 1974 | } |
c906108c | 1975 | else |
c5aa993b | 1976 | { |
e514a9d6 JM |
1977 | /* really throw, some other bpstat will handle it */ |
1978 | return PRINT_UNKNOWN; | |
c5aa993b | 1979 | } |
e514a9d6 JM |
1980 | break; |
1981 | ||
1982 | case bp_catch_throw: | |
53a5351d JM |
1983 | if (current_exception_event && |
1984 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
1985 | { |
1986 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1987 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
1988 | bs->breakpoint_at->number); | |
c5aa993b JM |
1989 | printf_filtered ("throw location "); |
1990 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1991 | printf_filtered ("%s:%d", | |
1992 | CURRENT_EXCEPTION_THROW_FILE, | |
1993 | CURRENT_EXCEPTION_THROW_LINE); | |
1994 | else | |
1995 | printf_filtered ("unknown"); | |
1996 | ||
1997 | printf_filtered (", catch location "); | |
1998 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1999 | printf_filtered ("%s:%d", | |
2000 | CURRENT_EXCEPTION_CATCH_FILE, | |
2001 | CURRENT_EXCEPTION_CATCH_LINE); | |
2002 | else | |
2003 | printf_filtered ("unknown"); | |
2004 | ||
2005 | printf_filtered ("\n"); | |
e514a9d6 JM |
2006 | /* don't bother to print location frame info */ |
2007 | return PRINT_SRC_ONLY; | |
c5aa993b | 2008 | } |
c906108c | 2009 | else |
c5aa993b | 2010 | { |
e514a9d6 JM |
2011 | /* really catch, some other bpstat will handle it */ |
2012 | return PRINT_UNKNOWN; | |
c5aa993b | 2013 | } |
e514a9d6 | 2014 | break; |
c906108c | 2015 | |
e514a9d6 JM |
2016 | case bp_watchpoint: |
2017 | case bp_hardware_watchpoint: | |
2018 | if (bs->old_val != NULL) | |
2019 | { | |
2020 | annotate_watchpoint (bs->breakpoint_at->number); | |
8b93c638 | 2021 | #ifdef UI_OUT |
fb40c209 AC |
2022 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2023 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); | |
8b93c638 JM |
2024 | mention (bs->breakpoint_at); |
2025 | ui_out_list_begin (uiout, "value"); | |
2026 | ui_out_text (uiout, "\nOld value = "); | |
2027 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2028 | ui_out_field_stream (uiout, "old", stb); | |
2029 | ui_out_text (uiout, "\nNew value = "); | |
2030 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2031 | ui_out_field_stream (uiout, "new", stb); | |
2032 | ui_out_list_end (uiout); | |
2033 | ui_out_text (uiout, "\n"); | |
2034 | #else | |
e514a9d6 JM |
2035 | mention (bs->breakpoint_at); |
2036 | printf_filtered ("\nOld value = "); | |
2037 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2038 | printf_filtered ("\nNew value = "); | |
2039 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
2040 | Val_pretty_default); | |
2041 | printf_filtered ("\n"); | |
8b93c638 | 2042 | #endif |
e514a9d6 JM |
2043 | value_free (bs->old_val); |
2044 | bs->old_val = NULL; | |
2045 | } | |
2046 | /* More than one watchpoint may have been triggered. */ | |
2047 | return PRINT_UNKNOWN; | |
2048 | break; | |
2049 | ||
2050 | case bp_read_watchpoint: | |
8b93c638 | 2051 | #ifdef UI_OUT |
fb40c209 AC |
2052 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2053 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); | |
8b93c638 JM |
2054 | mention (bs->breakpoint_at); |
2055 | ui_out_list_begin (uiout, "value"); | |
2056 | ui_out_text (uiout, "\nValue = "); | |
2057 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2058 | ui_out_field_stream (uiout, "value", stb); | |
2059 | ui_out_list_end (uiout); | |
2060 | ui_out_text (uiout, "\n"); | |
2061 | #else | |
c906108c | 2062 | mention (bs->breakpoint_at); |
e514a9d6 | 2063 | printf_filtered ("\nValue = "); |
c906108c SS |
2064 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
2065 | Val_pretty_default); | |
2066 | printf_filtered ("\n"); | |
8b93c638 | 2067 | #endif |
917317f4 | 2068 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2069 | break; |
2070 | ||
2071 | case bp_access_watchpoint: | |
8b93c638 JM |
2072 | #ifdef UI_OUT |
2073 | if (bs->old_val != NULL) | |
2074 | { | |
2075 | annotate_watchpoint (bs->breakpoint_at->number); | |
fb40c209 AC |
2076 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2077 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); | |
8b93c638 JM |
2078 | mention (bs->breakpoint_at); |
2079 | ui_out_list_begin (uiout, "value"); | |
2080 | ui_out_text (uiout, "\nOld value = "); | |
2081 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2082 | ui_out_field_stream (uiout, "old", stb); | |
2083 | value_free (bs->old_val); | |
2084 | bs->old_val = NULL; | |
2085 | ui_out_text (uiout, "\nNew value = "); | |
2086 | } | |
2087 | else | |
2088 | { | |
2089 | mention (bs->breakpoint_at); | |
fb40c209 AC |
2090 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2091 | ui_out_list_begin (uiout, "value"); | |
8b93c638 JM |
2092 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
2093 | ui_out_text (uiout, "\nValue = "); | |
2094 | } | |
2095 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2096 | ui_out_field_stream (uiout, "new", stb); | |
2097 | ui_out_list_end (uiout); | |
2098 | ui_out_text (uiout, "\n"); | |
2099 | #else | |
e514a9d6 JM |
2100 | if (bs->old_val != NULL) |
2101 | { | |
2102 | annotate_watchpoint (bs->breakpoint_at->number); | |
2103 | mention (bs->breakpoint_at); | |
2104 | printf_filtered ("\nOld value = "); | |
2105 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2106 | value_free (bs->old_val); | |
2107 | bs->old_val = NULL; | |
2108 | printf_filtered ("\nNew value = "); | |
2109 | } | |
2110 | else | |
2111 | { | |
2112 | mention (bs->breakpoint_at); | |
2113 | printf_filtered ("\nValue = "); | |
2114 | } | |
c906108c | 2115 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
c5aa993b | 2116 | Val_pretty_default); |
c906108c | 2117 | printf_filtered ("\n"); |
8b93c638 | 2118 | #endif |
917317f4 | 2119 | return PRINT_UNKNOWN; |
e514a9d6 | 2120 | break; |
4ce44c66 | 2121 | |
e514a9d6 JM |
2122 | /* Fall through, we don't deal with these types of breakpoints |
2123 | here. */ | |
2124 | ||
11cf8741 | 2125 | case bp_finish: |
fb40c209 AC |
2126 | #ifdef UI_OUT |
2127 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2128 | ui_out_field_string (uiout, "reason", "function-finished"); | |
2129 | #endif | |
8b93c638 JM |
2130 | return PRINT_UNKNOWN; |
2131 | break; | |
2132 | ||
e514a9d6 | 2133 | case bp_until: |
fb40c209 AC |
2134 | #ifdef UI_OUT |
2135 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2136 | ui_out_field_string (uiout, "reason", "location-reached"); | |
2137 | #endif | |
8b93c638 JM |
2138 | return PRINT_UNKNOWN; |
2139 | break; | |
2140 | ||
c2d11a7d | 2141 | case bp_none: |
e514a9d6 JM |
2142 | case bp_longjmp: |
2143 | case bp_longjmp_resume: | |
2144 | case bp_step_resume: | |
2145 | case bp_through_sigtramp: | |
2146 | case bp_watchpoint_scope: | |
2147 | case bp_call_dummy: | |
2148 | default: | |
2149 | return PRINT_UNKNOWN; | |
2150 | } | |
2151 | } | |
2152 | ||
2153 | /* Generic routine for printing messages indicating why we | |
2154 | stopped. The behavior of this function depends on the value | |
2155 | 'print_it' in the bpstat structure. Under some circumstances we | |
2156 | may decide not to print anything here and delegate the task to | |
2157 | normal_stop(). */ | |
2158 | ||
2159 | static enum print_stop_action | |
2160 | print_bp_stop_message (bpstat bs) | |
2161 | { | |
2162 | switch (bs->print_it) | |
2163 | { | |
2164 | case print_it_noop: | |
2165 | /* Nothing should be printed for this bpstat entry. */ | |
2166 | return PRINT_UNKNOWN; | |
2167 | break; | |
2168 | ||
2169 | case print_it_done: | |
2170 | /* We still want to print the frame, but we already printed the | |
2171 | relevant messages. */ | |
2172 | return PRINT_SRC_AND_LOC; | |
2173 | break; | |
2174 | ||
2175 | case print_it_normal: | |
2176 | /* Normal case, we handle everything in print_it_typical. */ | |
2177 | return print_it_typical (bs); | |
2178 | break; | |
2179 | default: | |
8e65ff28 AC |
2180 | internal_error (__FILE__, __LINE__, |
2181 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2182 | break; |
c906108c | 2183 | } |
c906108c SS |
2184 | } |
2185 | ||
e514a9d6 JM |
2186 | /* Print a message indicating what happened. This is called from |
2187 | normal_stop(). The input to this routine is the head of the bpstat | |
2188 | list - a list of the eventpoints that caused this stop. This | |
2189 | routine calls the generic print routine for printing a message | |
2190 | about reasons for stopping. This will print (for example) the | |
2191 | "Breakpoint n," part of the output. The return value of this | |
2192 | routine is one of: | |
c906108c | 2193 | |
917317f4 JM |
2194 | PRINT_UNKNOWN: Means we printed nothing |
2195 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2196 | code to print the location. An example is |
2197 | "Breakpoint 1, " which should be followed by | |
2198 | the location. | |
917317f4 | 2199 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2200 | to also print the location part of the message. |
2201 | An example is the catch/throw messages, which | |
917317f4 JM |
2202 | don't require a location appended to the end. |
2203 | PRINT_NOTHING: We have done some printing and we don't need any | |
2204 | further info to be printed.*/ | |
c906108c | 2205 | |
917317f4 | 2206 | enum print_stop_action |
fba45db2 | 2207 | bpstat_print (bpstat bs) |
c906108c SS |
2208 | { |
2209 | int val; | |
c5aa993b | 2210 | |
c906108c | 2211 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2212 | (Currently all watchpoints go on the bpstat whether hit or not. |
2213 | That probably could (should) be changed, provided care is taken | |
c906108c | 2214 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2215 | for (; bs; bs = bs->next) |
2216 | { | |
2217 | val = print_bp_stop_message (bs); | |
2218 | if (val == PRINT_SRC_ONLY | |
2219 | || val == PRINT_SRC_AND_LOC | |
2220 | || val == PRINT_NOTHING) | |
2221 | return val; | |
2222 | } | |
c906108c | 2223 | |
e514a9d6 JM |
2224 | /* We reached the end of the chain, or we got a null BS to start |
2225 | with and nothing was printed. */ | |
917317f4 | 2226 | return PRINT_UNKNOWN; |
c906108c SS |
2227 | } |
2228 | ||
2229 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2230 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2231 | The argument is a "struct expression *" that has been cast to char * to | |
2232 | make it pass through catch_errors. */ | |
2233 | ||
2234 | static int | |
fba45db2 | 2235 | breakpoint_cond_eval (PTR exp) |
c906108c SS |
2236 | { |
2237 | value_ptr mark = value_mark (); | |
c5aa993b | 2238 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2239 | value_free_to_mark (mark); |
2240 | return i; | |
2241 | } | |
2242 | ||
2243 | /* Allocate a new bpstat and chain it to the current one. */ | |
2244 | ||
2245 | static bpstat | |
831662b3 | 2246 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2247 | { |
2248 | bpstat bs; | |
2249 | ||
2250 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2251 | cbs->next = bs; | |
2252 | bs->breakpoint_at = b; | |
2253 | /* If the condition is false, etc., don't do the commands. */ | |
2254 | bs->commands = NULL; | |
2255 | bs->old_val = NULL; | |
2256 | bs->print_it = print_it_normal; | |
2257 | return bs; | |
2258 | } | |
2259 | \f | |
2260 | /* Possible return values for watchpoint_check (this can't be an enum | |
2261 | because of check_errors). */ | |
2262 | /* The watchpoint has been deleted. */ | |
2263 | #define WP_DELETED 1 | |
2264 | /* The value has changed. */ | |
2265 | #define WP_VALUE_CHANGED 2 | |
2266 | /* The value has not changed. */ | |
2267 | #define WP_VALUE_NOT_CHANGED 3 | |
2268 | ||
2269 | #define BP_TEMPFLAG 1 | |
2270 | #define BP_HARDWAREFLAG 2 | |
2271 | ||
2272 | /* Check watchpoint condition. */ | |
2273 | ||
2274 | static int | |
fba45db2 | 2275 | watchpoint_check (PTR p) |
c906108c SS |
2276 | { |
2277 | bpstat bs = (bpstat) p; | |
2278 | struct breakpoint *b; | |
2279 | struct frame_info *fr; | |
2280 | int within_current_scope; | |
2281 | ||
2282 | b = bs->breakpoint_at; | |
2283 | ||
2284 | if (b->exp_valid_block == NULL) | |
2285 | within_current_scope = 1; | |
2286 | else | |
2287 | { | |
2288 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2289 | any chance of handling watchpoints on local variables, we'll need |
2290 | the frame chain (so we can determine if we're in scope). */ | |
2291 | reinit_frame_cache (); | |
c906108c SS |
2292 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
2293 | within_current_scope = (fr != NULL); | |
2294 | if (within_current_scope) | |
2295 | /* If we end up stopping, the current frame will get selected | |
2296 | in normal_stop. So this call to select_frame won't affect | |
2297 | the user. */ | |
2298 | select_frame (fr, -1); | |
2299 | } | |
c5aa993b | 2300 | |
c906108c SS |
2301 | if (within_current_scope) |
2302 | { | |
2303 | /* We use value_{,free_to_}mark because it could be a | |
2304 | *long* time before we return to the command level and | |
c5aa993b JM |
2305 | call free_all_values. We can't call free_all_values because |
2306 | we might be in the middle of evaluating a function call. */ | |
c906108c SS |
2307 | |
2308 | value_ptr mark = value_mark (); | |
2309 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
2310 | if (!value_equal (b->val, new_val)) | |
2311 | { | |
2312 | release_value (new_val); | |
2313 | value_free_to_mark (mark); | |
2314 | bs->old_val = b->val; | |
2315 | b->val = new_val; | |
2316 | /* We will stop here */ | |
2317 | return WP_VALUE_CHANGED; | |
2318 | } | |
2319 | else | |
2320 | { | |
2321 | /* Nothing changed, don't do anything. */ | |
2322 | value_free_to_mark (mark); | |
2323 | /* We won't stop here */ | |
2324 | return WP_VALUE_NOT_CHANGED; | |
2325 | } | |
2326 | } | |
2327 | else | |
2328 | { | |
2329 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2330 | if we temporarily ignored the watchpoint, then when |
2331 | we reenter the block in which it is valid it contains | |
2332 | garbage (in the case of a function, it may have two | |
2333 | garbage values, one before and one after the prologue). | |
2334 | So we can't even detect the first assignment to it and | |
2335 | watch after that (since the garbage may or may not equal | |
2336 | the first value assigned). */ | |
4ce44c66 JM |
2337 | /* We print all the stop information in print_it_typical(), but |
2338 | in this case, by the time we call print_it_typical() this bp | |
2339 | will be deleted already. So we have no choice but print the | |
2340 | information here. */ | |
8b93c638 | 2341 | #ifdef UI_OUT |
fb40c209 AC |
2342 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2343 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); | |
8b93c638 JM |
2344 | ui_out_text (uiout, "\nWatchpoint "); |
2345 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2346 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2347 | which its expression is valid.\n"); | |
2348 | #else | |
c906108c SS |
2349 | printf_filtered ("\ |
2350 | Watchpoint %d deleted because the program has left the block in\n\ | |
2351 | which its expression is valid.\n", bs->breakpoint_at->number); | |
8b93c638 | 2352 | #endif |
4ce44c66 | 2353 | |
c906108c SS |
2354 | if (b->related_breakpoint) |
2355 | b->related_breakpoint->disposition = del_at_next_stop; | |
2356 | b->disposition = del_at_next_stop; | |
2357 | ||
2358 | return WP_DELETED; | |
2359 | } | |
2360 | } | |
2361 | ||
c906108c SS |
2362 | /* Get a bpstat associated with having just stopped at address *PC |
2363 | and frame address CORE_ADDRESS. Update *PC to point at the | |
2364 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
2365 | if this is known to not be a real breakpoint (it could still be a | |
2366 | watchpoint, though). */ | |
2367 | ||
2368 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2369 | don't understand this stop. Result is a chain of bpstat's such that: | |
2370 | ||
c5aa993b | 2371 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2372 | |
c5aa993b | 2373 | if we understand why we stopped, the result is not null. |
c906108c | 2374 | |
c5aa993b JM |
2375 | Each element of the chain refers to a particular breakpoint or |
2376 | watchpoint at which we have stopped. (We may have stopped for | |
2377 | several reasons concurrently.) | |
c906108c | 2378 | |
c5aa993b JM |
2379 | Each element of the chain has valid next, breakpoint_at, |
2380 | commands, FIXME??? fields. */ | |
c906108c SS |
2381 | |
2382 | bpstat | |
fba45db2 | 2383 | bpstat_stop_status (CORE_ADDR *pc, int not_a_breakpoint) |
c906108c SS |
2384 | { |
2385 | register struct breakpoint *b, *temp; | |
2386 | CORE_ADDR bp_addr; | |
2387 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2388 | int real_breakpoint = 0; | |
2389 | /* Root of the chain of bpstat's */ | |
2390 | struct bpstats root_bs[1]; | |
2391 | /* Pointer to the last thing in the chain currently. */ | |
2392 | bpstat bs = root_bs; | |
2393 | static char message1[] = | |
c5aa993b JM |
2394 | "Error evaluating expression for watchpoint %d\n"; |
2395 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c SS |
2396 | |
2397 | /* Get the address where the breakpoint would have been. */ | |
6426a772 JM |
2398 | bp_addr = *pc - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P ? |
2399 | 0 : DECR_PC_AFTER_BREAK); | |
c906108c SS |
2400 | |
2401 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
2402 | { |
2403 | if (b->enable == disabled | |
2404 | || b->enable == shlib_disabled | |
2405 | || b->enable == call_disabled) | |
2406 | continue; | |
2407 | ||
2408 | if (b->type != bp_watchpoint | |
2409 | && b->type != bp_hardware_watchpoint | |
2410 | && b->type != bp_read_watchpoint | |
2411 | && b->type != bp_access_watchpoint | |
2412 | && b->type != bp_hardware_breakpoint | |
2413 | && b->type != bp_catch_fork | |
2414 | && b->type != bp_catch_vfork | |
2415 | && b->type != bp_catch_exec | |
2416 | && b->type != bp_catch_catch | |
2417 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
2418 | if (b->address != bp_addr || /* address doesn't match or */ | |
2419 | (overlay_debugging && /* overlay doesn't match */ | |
2420 | section_is_overlay (b->section) && | |
2421 | !section_is_mapped (b->section))) | |
c906108c SS |
2422 | continue; |
2423 | ||
c5aa993b JM |
2424 | if (b->type == bp_hardware_breakpoint |
2425 | && b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2426 | continue; | |
2427 | ||
c5aa993b JM |
2428 | /* Is this a catchpoint of a load or unload? If so, did we |
2429 | get a load or unload of the specified library? If not, | |
2430 | ignore it. */ | |
2431 | if ((b->type == bp_catch_load) | |
c906108c | 2432 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
c5aa993b JM |
2433 | && (!SOLIB_HAVE_LOAD_EVENT (inferior_pid) |
2434 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2435 | && (strcmp (b->dll_pathname, |
2436 | SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2437 | != 0))) | |
c906108c | 2438 | #endif |
c5aa993b JM |
2439 | ) |
2440 | continue; | |
2441 | ||
2442 | if ((b->type == bp_catch_unload) | |
c906108c | 2443 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
c5aa993b JM |
2444 | && (!SOLIB_HAVE_UNLOAD_EVENT (inferior_pid) |
2445 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2446 | && (strcmp (b->dll_pathname, |
2447 | SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2448 | != 0))) | |
c906108c | 2449 | #endif |
c5aa993b JM |
2450 | ) |
2451 | continue; | |
c906108c | 2452 | |
c5aa993b JM |
2453 | if ((b->type == bp_catch_fork) |
2454 | && !target_has_forked (inferior_pid, &b->forked_inferior_pid)) | |
2455 | continue; | |
c906108c | 2456 | |
c5aa993b JM |
2457 | if ((b->type == bp_catch_vfork) |
2458 | && !target_has_vforked (inferior_pid, &b->forked_inferior_pid)) | |
2459 | continue; | |
c906108c | 2460 | |
c5aa993b JM |
2461 | if ((b->type == bp_catch_exec) |
2462 | && !target_has_execd (inferior_pid, &b->exec_pathname)) | |
2463 | continue; | |
c906108c | 2464 | |
c5aa993b JM |
2465 | if (ep_is_exception_catchpoint (b) && |
2466 | !(current_exception_event = target_get_current_exception_event ())) | |
2467 | continue; | |
c906108c | 2468 | |
c5aa993b JM |
2469 | /* Come here if it's a watchpoint, or if the break address matches */ |
2470 | ||
2471 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2472 | ||
2473 | /* Watchpoints may change this, if not found to have triggered. */ | |
2474 | bs->stop = 1; | |
2475 | bs->print = 1; | |
2476 | ||
2477 | sprintf (message, message1, b->number); | |
53a5351d JM |
2478 | if (b->type == bp_watchpoint || |
2479 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2480 | { |
53a5351d JM |
2481 | switch (catch_errors (watchpoint_check, bs, message, |
2482 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2483 | { |
2484 | case WP_DELETED: | |
2485 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2486 | /* Actually this is superfluous, because by the time we |
2487 | call print_it_typical() the wp will be already deleted, | |
2488 | and the function will return immediately. */ | |
c5aa993b JM |
2489 | bs->print_it = print_it_done; |
2490 | /* Stop. */ | |
2491 | break; | |
2492 | case WP_VALUE_CHANGED: | |
2493 | /* Stop. */ | |
2494 | ++(b->hit_count); | |
2495 | break; | |
2496 | case WP_VALUE_NOT_CHANGED: | |
2497 | /* Don't stop. */ | |
2498 | bs->print_it = print_it_noop; | |
2499 | bs->stop = 0; | |
c5aa993b JM |
2500 | continue; |
2501 | default: | |
2502 | /* Can't happen. */ | |
2503 | /* FALLTHROUGH */ | |
2504 | case 0: | |
2505 | /* Error from catch_errors. */ | |
2506 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2507 | if (b->related_breakpoint) | |
2508 | b->related_breakpoint->disposition = del_at_next_stop; | |
2509 | b->disposition = del_at_next_stop; | |
2510 | /* We've already printed what needs to be printed. */ | |
2511 | bs->print_it = print_it_done; | |
2512 | ||
2513 | /* Stop. */ | |
2514 | break; | |
2515 | } | |
2516 | } | |
53a5351d JM |
2517 | else if (b->type == bp_read_watchpoint || |
2518 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2519 | { |
2520 | CORE_ADDR addr; | |
2521 | value_ptr v; | |
2522 | int found = 0; | |
2523 | ||
2524 | addr = target_stopped_data_address (); | |
2525 | if (addr == 0) | |
2526 | continue; | |
2527 | for (v = b->val_chain; v; v = v->next) | |
2528 | { | |
5c44784c JM |
2529 | if (VALUE_LVAL (v) == lval_memory |
2530 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2531 | { |
2e70b7b9 MS |
2532 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2533 | ||
2534 | if (v == b->val_chain | |
2535 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2536 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2537 | { | |
2538 | CORE_ADDR vaddr; | |
2539 | ||
2540 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2541 | /* Exact match not required. Within range is | |
2542 | sufficient. */ | |
2543 | if (addr >= vaddr && | |
2544 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2545 | found = 1; | |
2546 | } | |
c5aa993b JM |
2547 | } |
2548 | } | |
2549 | if (found) | |
53a5351d JM |
2550 | switch (catch_errors (watchpoint_check, bs, message, |
2551 | RETURN_MASK_ALL)) | |
c906108c SS |
2552 | { |
2553 | case WP_DELETED: | |
2554 | /* We've already printed what needs to be printed. */ | |
2555 | bs->print_it = print_it_done; | |
2556 | /* Stop. */ | |
2557 | break; | |
2558 | case WP_VALUE_CHANGED: | |
99e5c1c8 MS |
2559 | if (b->type == bp_read_watchpoint) |
2560 | { | |
2561 | /* Don't stop: read watchpoints shouldn't fire if | |
2562 | the value has changed. This is for targets which | |
2563 | cannot set read-only watchpoints. */ | |
2564 | bs->print_it = print_it_noop; | |
2565 | bs->stop = 0; | |
2566 | continue; | |
2567 | } | |
2568 | ++(b->hit_count); | |
2569 | break; | |
c5aa993b | 2570 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2571 | /* Stop. */ |
2572 | ++(b->hit_count); | |
2573 | break; | |
c906108c SS |
2574 | default: |
2575 | /* Can't happen. */ | |
c906108c SS |
2576 | case 0: |
2577 | /* Error from catch_errors. */ | |
2578 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2579 | if (b->related_breakpoint) | |
2580 | b->related_breakpoint->disposition = del_at_next_stop; | |
2581 | b->disposition = del_at_next_stop; | |
2582 | /* We've already printed what needs to be printed. */ | |
2583 | bs->print_it = print_it_done; | |
c906108c SS |
2584 | break; |
2585 | } | |
53a5351d JM |
2586 | else /* found == 0 */ |
2587 | { | |
2588 | /* This is a case where some watchpoint(s) triggered, | |
2589 | but not at the address of this watchpoint (FOUND | |
2590 | was left zero). So don't print anything for this | |
2591 | watchpoint. */ | |
2592 | bs->print_it = print_it_noop; | |
2593 | bs->stop = 0; | |
2594 | continue; | |
2595 | } | |
c5aa993b JM |
2596 | } |
2597 | else | |
2598 | { | |
2599 | /* By definition, an encountered breakpoint is a triggered | |
2600 | breakpoint. */ | |
2601 | ++(b->hit_count); | |
c906108c | 2602 | |
c5aa993b JM |
2603 | real_breakpoint = 1; |
2604 | } | |
2605 | ||
ed9a39eb JM |
2606 | if (b->frame && |
2607 | b->frame != (get_current_frame ())->frame) | |
c5aa993b JM |
2608 | bs->stop = 0; |
2609 | else | |
2610 | { | |
2611 | int value_is_zero = 0; | |
2612 | ||
2613 | if (b->cond) | |
2614 | { | |
2615 | /* Need to select the frame, with all that implies | |
2616 | so that the conditions will have the right context. */ | |
2617 | select_frame (get_current_frame (), 0); | |
2618 | value_is_zero | |
2619 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2620 | "Error in testing breakpoint condition:\n", | |
2621 | RETURN_MASK_ALL); | |
2622 | /* FIXME-someday, should give breakpoint # */ | |
2623 | free_all_values (); | |
2624 | } | |
2625 | if (b->cond && value_is_zero) | |
2626 | { | |
2627 | bs->stop = 0; | |
2628 | /* Don't consider this a hit. */ | |
2629 | --(b->hit_count); | |
2630 | } | |
2631 | else if (b->ignore_count > 0) | |
2632 | { | |
2633 | b->ignore_count--; | |
5c44784c | 2634 | annotate_ignore_count_change (); |
c5aa993b JM |
2635 | bs->stop = 0; |
2636 | } | |
2637 | else | |
2638 | { | |
2639 | /* We will stop here */ | |
2640 | if (b->disposition == disable) | |
2641 | b->enable = disabled; | |
2642 | bs->commands = b->commands; | |
2643 | if (b->silent) | |
2644 | bs->print = 0; | |
2645 | if (bs->commands && | |
2646 | (STREQ ("silent", bs->commands->line) || | |
2647 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2648 | { | |
2649 | bs->commands = bs->commands->next; | |
c906108c | 2650 | bs->print = 0; |
c5aa993b JM |
2651 | } |
2652 | } | |
2653 | } | |
2654 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2655 | if (bs->stop == 0 || bs->print == 0) | |
2656 | bs->print_it = print_it_noop; | |
2657 | } | |
c906108c SS |
2658 | |
2659 | bs->next = NULL; /* Terminate the chain */ | |
2660 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2661 | ||
2662 | if (real_breakpoint && bs) | |
2663 | { | |
c5aa993b | 2664 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2665 | { |
c5aa993b | 2666 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2667 | { |
2668 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2669 | write_pc (*pc); | |
2670 | } | |
2671 | } | |
2672 | else | |
2673 | { | |
2674 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2675 | { | |
2676 | *pc = bp_addr; | |
2677 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2678 | SHIFT_INST_REGS (); |
c906108c SS |
2679 | #else /* No SHIFT_INST_REGS. */ |
2680 | write_pc (bp_addr); | |
2681 | #endif /* No SHIFT_INST_REGS. */ | |
2682 | } | |
2683 | } | |
2684 | } | |
2685 | ||
2686 | /* The value of a hardware watchpoint hasn't changed, but the | |
2687 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2688 | if (bs && !bs->stop && |
c906108c SS |
2689 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2690 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2691 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2692 | { | |
2693 | remove_breakpoints (); | |
2694 | insert_breakpoints (); | |
2695 | } | |
2696 | return bs; | |
2697 | } | |
2698 | \f | |
2699 | /* Tell what to do about this bpstat. */ | |
2700 | struct bpstat_what | |
fba45db2 | 2701 | bpstat_what (bpstat bs) |
c906108c SS |
2702 | { |
2703 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2704 | enum class |
2705 | { | |
2706 | /* This bpstat element has no effect on the main_action. */ | |
2707 | no_effect = 0, | |
2708 | ||
2709 | /* There was a watchpoint, stop but don't print. */ | |
2710 | wp_silent, | |
c906108c | 2711 | |
c5aa993b JM |
2712 | /* There was a watchpoint, stop and print. */ |
2713 | wp_noisy, | |
c906108c | 2714 | |
c5aa993b JM |
2715 | /* There was a breakpoint but we're not stopping. */ |
2716 | bp_nostop, | |
c906108c | 2717 | |
c5aa993b JM |
2718 | /* There was a breakpoint, stop but don't print. */ |
2719 | bp_silent, | |
c906108c | 2720 | |
c5aa993b JM |
2721 | /* There was a breakpoint, stop and print. */ |
2722 | bp_noisy, | |
c906108c | 2723 | |
c5aa993b JM |
2724 | /* We hit the longjmp breakpoint. */ |
2725 | long_jump, | |
c906108c | 2726 | |
c5aa993b JM |
2727 | /* We hit the longjmp_resume breakpoint. */ |
2728 | long_resume, | |
c906108c | 2729 | |
c5aa993b JM |
2730 | /* We hit the step_resume breakpoint. */ |
2731 | step_resume, | |
c906108c | 2732 | |
c5aa993b JM |
2733 | /* We hit the through_sigtramp breakpoint. */ |
2734 | through_sig, | |
c906108c | 2735 | |
c5aa993b JM |
2736 | /* We hit the shared library event breakpoint. */ |
2737 | shlib_event, | |
c906108c | 2738 | |
c5aa993b JM |
2739 | /* We caught a shared library event. */ |
2740 | catch_shlib_event, | |
c906108c | 2741 | |
c5aa993b JM |
2742 | /* This is just used to count how many enums there are. */ |
2743 | class_last | |
c906108c SS |
2744 | }; |
2745 | ||
2746 | /* Here is the table which drives this routine. So that we can | |
2747 | format it pretty, we define some abbreviations for the | |
2748 | enum bpstat_what codes. */ | |
2749 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2750 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2751 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2752 | #define sgl BPSTAT_WHAT_SINGLE | |
2753 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2754 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2755 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2756 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2757 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2758 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2759 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2760 | ||
2761 | /* "Can't happen." Might want to print an error message. | |
2762 | abort() is not out of the question, but chances are GDB is just | |
2763 | a bit confused, not unusable. */ | |
2764 | #define err BPSTAT_WHAT_STOP_NOISY | |
2765 | ||
2766 | /* Given an old action and a class, come up with a new action. */ | |
2767 | /* One interesting property of this table is that wp_silent is the same | |
2768 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2769 | after stopping, the check for whether to step over a breakpoint | |
2770 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2771 | reference to how we stopped. We retain separate wp_silent and |
2772 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2773 | |
2774 | Another possibly interesting property of this table is that | |
2775 | there's a partial ordering, priority-like, of the actions. Once | |
2776 | you've decided that some action is appropriate, you'll never go | |
2777 | back and decide something of a lower priority is better. The | |
2778 | ordering is: | |
2779 | ||
7e73cedf | 2780 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2781 | sgl < clrs shl shlr slr sn sr ss ts |
2782 | slr < err shl shlr sn sr ss ts | |
2783 | clr < clrs err shl shlr sn sr ss ts | |
2784 | clrs < err shl shlr sn sr ss ts | |
2785 | ss < shl shlr sn sr ts | |
2786 | sn < shl shlr sr ts | |
2787 | sr < shl shlr ts | |
2788 | shl < shlr | |
2789 | ts < | |
2790 | shlr < | |
2791 | ||
43ff13b4 JM |
2792 | What I think this means is that we don't need a damned table |
2793 | here. If you just put the rows and columns in the right order, | |
2794 | it'd look awfully regular. We could simply walk the bpstat list | |
2795 | and choose the highest priority action we find, with a little | |
2796 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2797 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2798 | is messy anyway). */ | |
c906108c SS |
2799 | |
2800 | /* step_resume entries: a step resume breakpoint overrides another | |
2801 | breakpoint of signal handling (see comment in wait_for_inferior | |
2802 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
2803 | /* We handle the through_sigtramp_breakpoint the same way; having both | |
2804 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2805 | ||
2806 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2807 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2808 | { | |
2809 | /* old action */ | |
2810 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2811 | */ | |
2812 | /*no_effect */ | |
2813 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2814 | /*wp_silent */ | |
2815 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2816 | /*wp_noisy */ | |
2817 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2818 | /*bp_nostop */ | |
2819 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2820 | /*bp_silent */ | |
2821 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2822 | /*bp_noisy */ | |
2823 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2824 | /*long_jump */ | |
a48bb0b3 | 2825 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
2826 | /*long_resume */ |
2827 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2828 | /*step_resume */ | |
2829 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2830 | /*through_sig */ | |
2831 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2832 | /*shlib */ | |
2833 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2834 | /*catch_shlib */ | |
2835 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2836 | }; | |
c906108c SS |
2837 | |
2838 | #undef kc | |
2839 | #undef ss | |
2840 | #undef sn | |
2841 | #undef sgl | |
2842 | #undef slr | |
2843 | #undef clr | |
2844 | #undef clrs | |
2845 | #undef err | |
2846 | #undef sr | |
2847 | #undef ts | |
2848 | #undef shl | |
2849 | #undef shlr | |
2850 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2851 | struct bpstat_what retval; | |
2852 | ||
2853 | retval.call_dummy = 0; | |
2854 | for (; bs != NULL; bs = bs->next) | |
2855 | { | |
2856 | enum class bs_class = no_effect; | |
2857 | if (bs->breakpoint_at == NULL) | |
2858 | /* I suspect this can happen if it was a momentary breakpoint | |
2859 | which has since been deleted. */ | |
2860 | continue; | |
2861 | switch (bs->breakpoint_at->type) | |
2862 | { | |
2863 | case bp_none: | |
2864 | continue; | |
2865 | ||
2866 | case bp_breakpoint: | |
2867 | case bp_hardware_breakpoint: | |
2868 | case bp_until: | |
2869 | case bp_finish: | |
2870 | if (bs->stop) | |
2871 | { | |
2872 | if (bs->print) | |
2873 | bs_class = bp_noisy; | |
2874 | else | |
2875 | bs_class = bp_silent; | |
2876 | } | |
2877 | else | |
2878 | bs_class = bp_nostop; | |
2879 | break; | |
2880 | case bp_watchpoint: | |
2881 | case bp_hardware_watchpoint: | |
2882 | case bp_read_watchpoint: | |
2883 | case bp_access_watchpoint: | |
2884 | if (bs->stop) | |
2885 | { | |
2886 | if (bs->print) | |
2887 | bs_class = wp_noisy; | |
2888 | else | |
2889 | bs_class = wp_silent; | |
2890 | } | |
2891 | else | |
53a5351d JM |
2892 | /* There was a watchpoint, but we're not stopping. |
2893 | This requires no further action. */ | |
c906108c SS |
2894 | bs_class = no_effect; |
2895 | break; | |
2896 | case bp_longjmp: | |
2897 | bs_class = long_jump; | |
2898 | break; | |
2899 | case bp_longjmp_resume: | |
2900 | bs_class = long_resume; | |
2901 | break; | |
2902 | case bp_step_resume: | |
2903 | if (bs->stop) | |
2904 | { | |
2905 | bs_class = step_resume; | |
2906 | } | |
2907 | else | |
2908 | /* It is for the wrong frame. */ | |
2909 | bs_class = bp_nostop; | |
2910 | break; | |
2911 | case bp_through_sigtramp: | |
2912 | bs_class = through_sig; | |
2913 | break; | |
2914 | case bp_watchpoint_scope: | |
2915 | bs_class = bp_nostop; | |
2916 | break; | |
c5aa993b JM |
2917 | case bp_shlib_event: |
2918 | bs_class = shlib_event; | |
2919 | break; | |
c4093a6a JM |
2920 | case bp_thread_event: |
2921 | bs_class = bp_nostop; | |
2922 | break; | |
c5aa993b JM |
2923 | case bp_catch_load: |
2924 | case bp_catch_unload: | |
2925 | /* Only if this catchpoint triggered should we cause the | |
2926 | step-out-of-dld behaviour. Otherwise, we ignore this | |
2927 | catchpoint. */ | |
2928 | if (bs->stop) | |
2929 | bs_class = catch_shlib_event; | |
2930 | else | |
2931 | bs_class = no_effect; | |
2932 | break; | |
2933 | case bp_catch_fork: | |
2934 | case bp_catch_vfork: | |
2935 | case bp_catch_exec: | |
2936 | if (bs->stop) | |
2937 | { | |
2938 | if (bs->print) | |
2939 | bs_class = bp_noisy; | |
2940 | else | |
2941 | bs_class = bp_silent; | |
2942 | } | |
2943 | else | |
53a5351d JM |
2944 | /* There was a catchpoint, but we're not stopping. |
2945 | This requires no further action. */ | |
c5aa993b JM |
2946 | bs_class = no_effect; |
2947 | break; | |
2948 | case bp_catch_catch: | |
2949 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
2950 | bs_class = bp_nostop; | |
2951 | else if (bs->stop) | |
2952 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2953 | break; | |
2954 | case bp_catch_throw: | |
2955 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
2956 | bs_class = bp_nostop; | |
2957 | else if (bs->stop) | |
2958 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 2959 | break; |
c906108c | 2960 | case bp_call_dummy: |
53a5351d JM |
2961 | /* Make sure the action is stop (silent or noisy), |
2962 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
2963 | bs_class = bp_silent; |
2964 | retval.call_dummy = 1; | |
2965 | break; | |
2966 | } | |
c5aa993b | 2967 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
2968 | } |
2969 | retval.main_action = current_action; | |
2970 | return retval; | |
2971 | } | |
2972 | ||
2973 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
2974 | without hardware support). This isn't related to a specific bpstat, | |
2975 | just to things like whether watchpoints are set. */ | |
2976 | ||
c5aa993b | 2977 | int |
fba45db2 | 2978 | bpstat_should_step (void) |
c906108c SS |
2979 | { |
2980 | struct breakpoint *b; | |
2981 | ALL_BREAKPOINTS (b) | |
2982 | if (b->enable == enabled && b->type == bp_watchpoint) | |
c5aa993b | 2983 | return 1; |
c906108c SS |
2984 | return 0; |
2985 | } | |
2986 | ||
2987 | /* Nonzero if there are enabled hardware watchpoints. */ | |
2988 | int | |
fba45db2 | 2989 | bpstat_have_active_hw_watchpoints (void) |
c906108c SS |
2990 | { |
2991 | struct breakpoint *b; | |
2992 | ALL_BREAKPOINTS (b) | |
2993 | if ((b->enable == enabled) && | |
c5aa993b JM |
2994 | (b->inserted) && |
2995 | ((b->type == bp_hardware_watchpoint) || | |
2996 | (b->type == bp_read_watchpoint) || | |
2997 | (b->type == bp_access_watchpoint))) | |
2998 | return 1; | |
c906108c SS |
2999 | return 0; |
3000 | } | |
c906108c | 3001 | \f |
c5aa993b | 3002 | |
c906108c SS |
3003 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3004 | function returns another bpstat which contains only the catchpoints | |
3005 | on that first list, if any. */ | |
3006 | void | |
fba45db2 | 3007 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3008 | { |
3009 | struct bpstats root_bs[1]; | |
3010 | bpstat bs = root_bs; | |
3011 | struct breakpoint *ep; | |
3012 | char *dll_pathname; | |
3013 | ||
c906108c SS |
3014 | bpstat_clear (cp_list); |
3015 | root_bs->next = NULL; | |
c5aa993b JM |
3016 | |
3017 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3018 | { |
3019 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3020 | ep = ep_list->breakpoint_at; | |
3021 | if (ep == NULL) | |
c5aa993b JM |
3022 | break; |
3023 | if ((ep->type != bp_catch_load) && | |
3024 | (ep->type != bp_catch_unload) && | |
3025 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3026 | (ep->type != bp_catch_throw)) |
3027 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3028 | continue; |
3029 | ||
c906108c SS |
3030 | /* Yes; add it to the list. */ |
3031 | bs = bpstat_alloc (ep, bs); | |
3032 | *bs = *ep_list; | |
3033 | bs->next = NULL; | |
3034 | bs = root_bs->next; | |
c5aa993b | 3035 | |
c906108c SS |
3036 | #if defined(SOLIB_ADD) |
3037 | /* Also, for each triggered catchpoint, tag it with the name of | |
3038 | the library that caused this trigger. (We copy the name now, | |
3039 | because it's only guaranteed to be available NOW, when the | |
3040 | catchpoint triggers. Clients who may wish to know the name | |
3041 | later must get it from the catchpoint itself.) */ | |
3042 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3043 | xfree (ep->triggered_dll_pathname); |
c906108c | 3044 | if (ep->type == bp_catch_load) |
c5aa993b | 3045 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c | 3046 | else |
c5aa993b | 3047 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c SS |
3048 | #else |
3049 | dll_pathname = NULL; | |
3050 | #endif | |
3051 | if (dll_pathname) | |
3052 | { | |
53a5351d JM |
3053 | ep->triggered_dll_pathname = (char *) |
3054 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3055 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3056 | } | |
3057 | else | |
3058 | ep->triggered_dll_pathname = NULL; | |
3059 | } | |
c5aa993b | 3060 | |
c906108c SS |
3061 | *cp_list = bs; |
3062 | } | |
3063 | ||
c4093a6a | 3064 | /* Print B to gdb_stdout. */ |
c906108c | 3065 | static void |
c4093a6a JM |
3066 | print_one_breakpoint (struct breakpoint *b, |
3067 | CORE_ADDR *last_addr) | |
c906108c | 3068 | { |
c906108c SS |
3069 | register struct command_line *l; |
3070 | register struct symbol *sym; | |
c4093a6a JM |
3071 | struct ep_type_description |
3072 | { | |
3073 | enum bptype type; | |
3074 | char *description; | |
3075 | }; | |
3076 | static struct ep_type_description bptypes[] = | |
c906108c | 3077 | { |
c5aa993b JM |
3078 | {bp_none, "?deleted?"}, |
3079 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3080 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3081 | {bp_until, "until"}, |
3082 | {bp_finish, "finish"}, | |
3083 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3084 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3085 | {bp_read_watchpoint, "read watchpoint"}, |
3086 | {bp_access_watchpoint, "acc watchpoint"}, | |
3087 | {bp_longjmp, "longjmp"}, | |
3088 | {bp_longjmp_resume, "longjmp resume"}, | |
3089 | {bp_step_resume, "step resume"}, | |
3090 | {bp_through_sigtramp, "sigtramp"}, | |
3091 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3092 | {bp_call_dummy, "call dummy"}, | |
3093 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3094 | {bp_thread_event, "thread events"}, |
c5aa993b JM |
3095 | {bp_catch_load, "catch load"}, |
3096 | {bp_catch_unload, "catch unload"}, | |
3097 | {bp_catch_fork, "catch fork"}, | |
3098 | {bp_catch_vfork, "catch vfork"}, | |
3099 | {bp_catch_exec, "catch exec"}, | |
3100 | {bp_catch_catch, "catch catch"}, | |
3101 | {bp_catch_throw, "catch throw"} | |
3102 | }; | |
c4093a6a | 3103 | |
c5aa993b JM |
3104 | static char *bpdisps[] = |
3105 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3106 | static char bpenables[] = "nynny"; |
c906108c | 3107 | char wrap_indent[80]; |
8b93c638 JM |
3108 | #ifdef UI_OUT |
3109 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
3110 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3111 | #endif | |
c906108c | 3112 | |
c4093a6a | 3113 | annotate_record (); |
8b93c638 JM |
3114 | #ifdef UI_OUT |
3115 | ui_out_list_begin (uiout, "bkpt"); | |
3116 | #endif | |
c4093a6a JM |
3117 | |
3118 | /* 1 */ | |
3119 | annotate_field (0); | |
8b93c638 JM |
3120 | #ifdef UI_OUT |
3121 | ui_out_field_int (uiout, "number", b->number); | |
3122 | #else | |
c4093a6a | 3123 | printf_filtered ("%-3d ", b->number); |
8b93c638 | 3124 | #endif |
c4093a6a JM |
3125 | |
3126 | /* 2 */ | |
3127 | annotate_field (1); | |
3128 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3129 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3130 | internal_error (__FILE__, __LINE__, |
3131 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3132 | (int) b->type); |
8b93c638 JM |
3133 | #ifdef UI_OUT |
3134 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3135 | #else | |
c4093a6a | 3136 | printf_filtered ("%-14s ", bptypes[(int) b->type].description); |
8b93c638 | 3137 | #endif |
c4093a6a JM |
3138 | |
3139 | /* 3 */ | |
3140 | annotate_field (2); | |
8b93c638 JM |
3141 | #ifdef UI_OUT |
3142 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); | |
3143 | #else | |
c4093a6a | 3144 | printf_filtered ("%-4s ", bpdisps[(int) b->disposition]); |
8b93c638 | 3145 | #endif |
c4093a6a JM |
3146 | |
3147 | /* 4 */ | |
3148 | annotate_field (3); | |
8b93c638 JM |
3149 | #ifdef UI_OUT |
3150 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable]); | |
3151 | ui_out_spaces (uiout, 2); | |
3152 | #else | |
c4093a6a | 3153 | printf_filtered ("%-3c ", bpenables[(int) b->enable]); |
8b93c638 | 3154 | #endif |
c4093a6a JM |
3155 | |
3156 | /* 5 and 6 */ | |
3157 | strcpy (wrap_indent, " "); | |
3158 | if (addressprint) | |
3159 | strcat (wrap_indent, " "); | |
3160 | switch (b->type) | |
c5aa993b | 3161 | { |
c4093a6a | 3162 | case bp_none: |
8e65ff28 AC |
3163 | internal_error (__FILE__, __LINE__, |
3164 | "print_one_breakpoint: bp_none encountered\n"); | |
c4093a6a | 3165 | break; |
c906108c | 3166 | |
c4093a6a JM |
3167 | case bp_watchpoint: |
3168 | case bp_hardware_watchpoint: | |
3169 | case bp_read_watchpoint: | |
3170 | case bp_access_watchpoint: | |
3171 | /* Field 4, the address, is omitted (which makes the columns | |
3172 | not line up too nicely with the headers, but the effect | |
3173 | is relatively readable). */ | |
8b93c638 JM |
3174 | #ifdef UI_OUT |
3175 | if (addressprint) | |
3176 | ui_out_field_skip (uiout, "addr"); | |
3177 | annotate_field (5); | |
3178 | print_expression (b->exp, stb->stream); | |
3179 | ui_out_field_stream (uiout, "what", stb); | |
3180 | #else | |
c4093a6a JM |
3181 | annotate_field (5); |
3182 | print_expression (b->exp, gdb_stdout); | |
8b93c638 | 3183 | #endif |
c4093a6a JM |
3184 | break; |
3185 | ||
3186 | case bp_catch_load: | |
3187 | case bp_catch_unload: | |
3188 | /* Field 4, the address, is omitted (which makes the columns | |
3189 | not line up too nicely with the headers, but the effect | |
3190 | is relatively readable). */ | |
8b93c638 JM |
3191 | #ifdef UI_OUT |
3192 | if (addressprint) | |
3193 | ui_out_field_skip (uiout, "addr"); | |
3194 | annotate_field (5); | |
3195 | if (b->dll_pathname == NULL) | |
3196 | { | |
3197 | ui_out_field_string (uiout, "what", "<any library>"); | |
3198 | ui_out_spaces (uiout, 1); | |
3199 | } | |
3200 | else | |
3201 | { | |
3202 | ui_out_text (uiout, "library \""); | |
3203 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3204 | ui_out_text (uiout, "\" "); | |
3205 | } | |
3206 | #else | |
c4093a6a JM |
3207 | annotate_field (5); |
3208 | if (b->dll_pathname == NULL) | |
3209 | printf_filtered ("<any library> "); | |
3210 | else | |
3211 | printf_filtered ("library \"%s\" ", b->dll_pathname); | |
8b93c638 | 3212 | #endif |
c4093a6a JM |
3213 | break; |
3214 | ||
3215 | case bp_catch_fork: | |
3216 | case bp_catch_vfork: | |
3217 | /* Field 4, the address, is omitted (which makes the columns | |
3218 | not line up too nicely with the headers, but the effect | |
3219 | is relatively readable). */ | |
8b93c638 JM |
3220 | #ifdef UI_OUT |
3221 | if (addressprint) | |
3222 | ui_out_field_skip (uiout, "addr"); | |
3223 | annotate_field (5); | |
3224 | if (b->forked_inferior_pid != 0) | |
3225 | { | |
3226 | ui_out_text (uiout, "process "); | |
3227 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3228 | ui_out_spaces (uiout, 1); | |
3229 | } | |
3230 | #else | |
c4093a6a JM |
3231 | annotate_field (5); |
3232 | if (b->forked_inferior_pid != 0) | |
3233 | printf_filtered ("process %d ", b->forked_inferior_pid); | |
3234 | break; | |
8b93c638 | 3235 | #endif |
c4093a6a JM |
3236 | |
3237 | case bp_catch_exec: | |
3238 | /* Field 4, the address, is omitted (which makes the columns | |
3239 | not line up too nicely with the headers, but the effect | |
3240 | is relatively readable). */ | |
8b93c638 JM |
3241 | #ifdef UI_OUT |
3242 | if (addressprint) | |
3243 | ui_out_field_skip (uiout, "addr"); | |
3244 | annotate_field (5); | |
3245 | if (b->exec_pathname != NULL) | |
3246 | { | |
3247 | ui_out_text (uiout, "program \""); | |
3248 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3249 | ui_out_text (uiout, "\" "); | |
3250 | } | |
3251 | #else | |
c4093a6a JM |
3252 | annotate_field (5); |
3253 | if (b->exec_pathname != NULL) | |
3254 | printf_filtered ("program \"%s\" ", b->exec_pathname); | |
8b93c638 | 3255 | #endif |
c4093a6a | 3256 | break; |
c906108c | 3257 | |
c4093a6a JM |
3258 | case bp_catch_catch: |
3259 | /* Field 4, the address, is omitted (which makes the columns | |
3260 | not line up too nicely with the headers, but the effect | |
3261 | is relatively readable). */ | |
8b93c638 JM |
3262 | #ifdef UI_OUT |
3263 | if (addressprint) | |
3264 | ui_out_field_skip (uiout, "addr"); | |
3265 | annotate_field (5); | |
3266 | ui_out_field_string (uiout, "what", "exception catch"); | |
3267 | ui_out_spaces (uiout, 1); | |
3268 | #else | |
c4093a6a JM |
3269 | annotate_field (5); |
3270 | printf_filtered ("exception catch "); | |
8b93c638 | 3271 | #endif |
c4093a6a | 3272 | break; |
c906108c | 3273 | |
c4093a6a JM |
3274 | case bp_catch_throw: |
3275 | /* Field 4, the address, is omitted (which makes the columns | |
3276 | not line up too nicely with the headers, but the effect | |
3277 | is relatively readable). */ | |
8b93c638 JM |
3278 | #ifdef UI_OUT |
3279 | if (addressprint) | |
3280 | ui_out_field_skip (uiout, "addr"); | |
3281 | annotate_field (5); | |
3282 | ui_out_field_string (uiout, "what", "exception throw"); | |
3283 | ui_out_spaces (uiout, 1); | |
3284 | #else | |
c4093a6a JM |
3285 | annotate_field (5); |
3286 | printf_filtered ("exception throw "); | |
8b93c638 | 3287 | #endif |
c4093a6a JM |
3288 | break; |
3289 | ||
3290 | case bp_breakpoint: | |
3291 | case bp_hardware_breakpoint: | |
3292 | case bp_until: | |
3293 | case bp_finish: | |
3294 | case bp_longjmp: | |
3295 | case bp_longjmp_resume: | |
3296 | case bp_step_resume: | |
3297 | case bp_through_sigtramp: | |
3298 | case bp_watchpoint_scope: | |
3299 | case bp_call_dummy: | |
3300 | case bp_shlib_event: | |
3301 | case bp_thread_event: | |
8b93c638 JM |
3302 | #ifdef UI_OUT |
3303 | if (addressprint) | |
3304 | { | |
3305 | annotate_field (4); | |
3306 | ui_out_field_core_addr (uiout, "addr", b->address); | |
3307 | } | |
3308 | annotate_field (5); | |
3309 | *last_addr = b->address; | |
3310 | if (b->source_file) | |
3311 | { | |
3312 | sym = find_pc_sect_function (b->address, b->section); | |
3313 | if (sym) | |
3314 | { | |
3315 | ui_out_text (uiout, "in "); | |
3316 | ui_out_field_string (uiout, "func", | |
3317 | SYMBOL_SOURCE_NAME (sym)); | |
3318 | ui_out_wrap_hint (uiout, wrap_indent); | |
3319 | ui_out_text (uiout, " at "); | |
3320 | } | |
3321 | ui_out_field_string (uiout, "file", b->source_file); | |
3322 | ui_out_text (uiout, ":"); | |
3323 | ui_out_field_int (uiout, "line", b->line_number); | |
3324 | } | |
3325 | else | |
3326 | { | |
3327 | print_address_symbolic (b->address, stb->stream, demangle, ""); | |
3328 | ui_out_field_stream (uiout, "at", stb); | |
3329 | } | |
3330 | #else | |
c5aa993b | 3331 | if (addressprint) |
c5aa993b | 3332 | { |
c4093a6a JM |
3333 | annotate_field (4); |
3334 | /* FIXME-32x64: need a print_address_numeric with | |
3335 | field width */ | |
d85310f7 MS |
3336 | printf_filtered ("%s ", |
3337 | local_hex_string_custom | |
3338 | ((unsigned long) b->address, "08l")); | |
c4093a6a JM |
3339 | } |
3340 | annotate_field (5); | |
3341 | *last_addr = b->address; | |
3342 | if (b->source_file) | |
3343 | { | |
3344 | sym = find_pc_sect_function (b->address, b->section); | |
3345 | if (sym) | |
c5aa993b | 3346 | { |
c4093a6a JM |
3347 | fputs_filtered ("in ", gdb_stdout); |
3348 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
3349 | wrap_here (wrap_indent); | |
3350 | fputs_filtered (" at ", gdb_stdout); | |
c5aa993b | 3351 | } |
c4093a6a JM |
3352 | fputs_filtered (b->source_file, gdb_stdout); |
3353 | printf_filtered (":%d", b->line_number); | |
c5aa993b | 3354 | } |
c4093a6a JM |
3355 | else |
3356 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); | |
8b93c638 | 3357 | #endif |
c4093a6a JM |
3358 | break; |
3359 | } | |
3360 | ||
3361 | if (b->thread != -1) | |
3362 | { | |
8b93c638 JM |
3363 | #ifdef UI_OUT |
3364 | /* FIXME: This seems to be redundant and lost here; see the | |
3365 | "stop only in" line a little further down. */ | |
3366 | ui_out_text (uiout, " thread "); | |
3367 | ui_out_field_int (uiout, "thread", b->thread); | |
3368 | #else | |
c4093a6a | 3369 | printf_filtered (" thread %d", b->thread); |
8b93c638 | 3370 | #endif |
c4093a6a JM |
3371 | } |
3372 | ||
8b93c638 JM |
3373 | #ifdef UI_OUT |
3374 | ui_out_text (uiout, "\n"); | |
3375 | #else | |
c4093a6a | 3376 | printf_filtered ("\n"); |
8b93c638 | 3377 | #endif |
c4093a6a JM |
3378 | |
3379 | if (b->frame) | |
3380 | { | |
3381 | annotate_field (6); | |
8b93c638 JM |
3382 | #ifdef UI_OUT |
3383 | ui_out_text (uiout, "\tstop only in stack frame at "); | |
3384 | ui_out_field_core_addr (uiout, "frame", b->frame); | |
3385 | ui_out_text (uiout, "\n"); | |
3386 | #else | |
c4093a6a JM |
3387 | printf_filtered ("\tstop only in stack frame at "); |
3388 | print_address_numeric (b->frame, 1, gdb_stdout); | |
c5aa993b | 3389 | printf_filtered ("\n"); |
8b93c638 | 3390 | #endif |
c4093a6a JM |
3391 | } |
3392 | ||
3393 | if (b->cond) | |
3394 | { | |
3395 | annotate_field (7); | |
8b93c638 JM |
3396 | #ifdef UI_OUT |
3397 | ui_out_text (uiout, "\tstop only if "); | |
3398 | print_expression (b->cond, stb->stream); | |
3399 | ui_out_field_stream (uiout, "cond", stb); | |
3400 | ui_out_text (uiout, "\n"); | |
3401 | #else | |
c4093a6a JM |
3402 | printf_filtered ("\tstop only if "); |
3403 | print_expression (b->cond, gdb_stdout); | |
3404 | printf_filtered ("\n"); | |
8b93c638 | 3405 | #endif |
c4093a6a JM |
3406 | } |
3407 | ||
3408 | if (b->thread != -1) | |
3409 | { | |
3410 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3411 | #ifdef UI_OUT |
3412 | ui_out_text (uiout, "\tstop only in thread "); | |
3413 | ui_out_field_int (uiout, "thread", b->thread); | |
3414 | ui_out_text (uiout, "\n"); | |
3415 | #else | |
c4093a6a | 3416 | printf_filtered ("\tstop only in thread %d\n", b->thread); |
8b93c638 | 3417 | #endif |
c4093a6a JM |
3418 | } |
3419 | ||
3420 | if (show_breakpoint_hit_counts && b->hit_count) | |
3421 | { | |
3422 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3423 | #ifdef UI_OUT |
3424 | if (ep_is_catchpoint (b)) | |
3425 | ui_out_text (uiout, "\tcatchpoint"); | |
3426 | else | |
3427 | ui_out_text (uiout, "\tbreakpoint"); | |
3428 | ui_out_text (uiout, " already hit "); | |
3429 | ui_out_field_int (uiout, "times", b->hit_count); | |
3430 | if (b->hit_count == 1) | |
3431 | ui_out_text (uiout, " time\n"); | |
3432 | else | |
3433 | ui_out_text (uiout, " times\n"); | |
3434 | #else | |
c4093a6a JM |
3435 | if (ep_is_catchpoint (b)) |
3436 | printf_filtered ("\tcatchpoint"); | |
3437 | else | |
3438 | printf_filtered ("\tbreakpoint"); | |
3439 | printf_filtered (" already hit %d time%s\n", | |
3440 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
8b93c638 | 3441 | #endif |
c4093a6a JM |
3442 | } |
3443 | ||
fb40c209 AC |
3444 | #ifdef UI_OUT |
3445 | /* Output the count also if it is zero, but only if this is | |
3446 | mi. FIXME: Should have a better test for this. */ | |
3447 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
3448 | if (show_breakpoint_hit_counts && b->hit_count == 0) | |
3449 | ui_out_field_int (uiout, "times", b->hit_count); | |
3450 | #endif | |
8b93c638 | 3451 | |
c4093a6a JM |
3452 | if (b->ignore_count) |
3453 | { | |
3454 | annotate_field (8); | |
8b93c638 JM |
3455 | #ifdef UI_OUT |
3456 | ui_out_text (uiout, "\tignore next "); | |
3457 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3458 | ui_out_text (uiout, " hits\n"); | |
3459 | #else | |
c4093a6a | 3460 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); |
8b93c638 | 3461 | #endif |
c4093a6a JM |
3462 | } |
3463 | ||
3464 | if ((l = b->commands)) | |
3465 | { | |
3466 | annotate_field (9); | |
8b93c638 JM |
3467 | #ifdef UI_OUT |
3468 | ui_out_list_begin (uiout, "script"); | |
3469 | print_command_lines (uiout, l, 4); | |
3470 | ui_out_list_end (uiout); | |
3471 | #else | |
c4093a6a | 3472 | while (l) |
c5aa993b | 3473 | { |
c4093a6a JM |
3474 | print_command_line (l, 4, gdb_stdout); |
3475 | l = l->next; | |
c5aa993b | 3476 | } |
8b93c638 | 3477 | #endif |
c4093a6a | 3478 | } |
8b93c638 JM |
3479 | #ifdef UI_OUT |
3480 | ui_out_list_end (uiout); | |
3481 | do_cleanups (old_chain); | |
3482 | #endif | |
c4093a6a | 3483 | } |
c5aa993b | 3484 | |
c4093a6a JM |
3485 | struct captured_breakpoint_query_args |
3486 | { | |
3487 | int bnum; | |
3488 | }; | |
c5aa993b | 3489 | |
c4093a6a JM |
3490 | static int |
3491 | do_captured_breakpoint_query (void *data) | |
3492 | { | |
3493 | struct captured_breakpoint_query_args *args = data; | |
3494 | register struct breakpoint *b; | |
3495 | CORE_ADDR dummy_addr = 0; | |
3496 | ALL_BREAKPOINTS (b) | |
3497 | { | |
3498 | if (args->bnum == b->number) | |
c5aa993b | 3499 | { |
c4093a6a JM |
3500 | print_one_breakpoint (b, &dummy_addr); |
3501 | return GDB_RC_OK; | |
c5aa993b | 3502 | } |
c4093a6a JM |
3503 | } |
3504 | return GDB_RC_NONE; | |
3505 | } | |
c5aa993b | 3506 | |
c4093a6a JM |
3507 | enum gdb_rc |
3508 | gdb_breakpoint_query (/* output object, */ int bnum) | |
3509 | { | |
3510 | struct captured_breakpoint_query_args args; | |
3511 | args.bnum = bnum; | |
3512 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3513 | an error. */ | |
3514 | return catch_errors (do_captured_breakpoint_query, &args, | |
3515 | NULL, RETURN_MASK_ALL); | |
3516 | } | |
c5aa993b | 3517 | |
c4093a6a JM |
3518 | /* Print information on breakpoint number BNUM, or -1 if all. |
3519 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
3520 | is nonzero, process only watchpoints. */ | |
c906108c | 3521 | |
c4093a6a | 3522 | static void |
fba45db2 | 3523 | breakpoint_1 (int bnum, int allflag) |
c4093a6a JM |
3524 | { |
3525 | register struct breakpoint *b; | |
3526 | CORE_ADDR last_addr = (CORE_ADDR) -1; | |
3527 | int found_a_breakpoint = 0; | |
3528 | ||
8b93c638 JM |
3529 | #ifdef UI_OUT |
3530 | if (addressprint) | |
3531 | ui_out_table_begin (uiout, 6, "BreakpointTable"); | |
3532 | else | |
3533 | ui_out_table_begin (uiout, 5, "BreakpointTable"); | |
3534 | #endif /* UI_OUT */ | |
3535 | ||
c4093a6a JM |
3536 | ALL_BREAKPOINTS (b) |
3537 | if (bnum == -1 | |
3538 | || bnum == b->number) | |
3539 | { | |
3540 | /* We only print out user settable breakpoints unless the | |
3541 | allflag is set. */ | |
3542 | if (!allflag | |
3543 | && b->type != bp_breakpoint | |
3544 | && b->type != bp_catch_load | |
3545 | && b->type != bp_catch_unload | |
3546 | && b->type != bp_catch_fork | |
3547 | && b->type != bp_catch_vfork | |
3548 | && b->type != bp_catch_exec | |
3549 | && b->type != bp_catch_catch | |
3550 | && b->type != bp_catch_throw | |
3551 | && b->type != bp_hardware_breakpoint | |
3552 | && b->type != bp_watchpoint | |
3553 | && b->type != bp_read_watchpoint | |
3554 | && b->type != bp_access_watchpoint | |
3555 | && b->type != bp_hardware_watchpoint) | |
3556 | continue; | |
3557 | ||
3558 | if (!found_a_breakpoint++) | |
3559 | { | |
3560 | annotate_breakpoints_headers (); | |
8b93c638 JM |
3561 | #ifdef UI_OUT |
3562 | annotate_field (0); | |
3563 | ui_out_table_header (uiout, 3, ui_left, "Num"); /* 1 */ | |
3564 | annotate_field (1); | |
3565 | ui_out_table_header (uiout, 14, ui_left, "Type"); /* 2 */ | |
3566 | annotate_field (2); | |
3567 | ui_out_table_header (uiout, 4, ui_left, "Disp"); /* 3 */ | |
3568 | annotate_field (3); | |
3569 | ui_out_table_header (uiout, 3, ui_left, "Enb"); /* 4 */ | |
3570 | if (addressprint) | |
3571 | { | |
3572 | annotate_field (4); | |
3573 | ui_out_table_header (uiout, 10, ui_left, "Address"); /* 5 */ | |
3574 | } | |
3575 | annotate_field (5); | |
3576 | ui_out_table_header (uiout, 40, ui_noalign, "What"); /* 6 */ | |
3577 | ui_out_table_body (uiout); | |
3578 | #else | |
c4093a6a JM |
3579 | annotate_field (0); |
3580 | printf_filtered ("Num "); | |
3581 | annotate_field (1); | |
3582 | printf_filtered ("Type "); | |
3583 | annotate_field (2); | |
3584 | printf_filtered ("Disp "); | |
3585 | annotate_field (3); | |
3586 | printf_filtered ("Enb "); | |
3587 | if (addressprint) | |
3588 | { | |
3589 | annotate_field (4); | |
3590 | printf_filtered ("Address "); | |
3591 | } | |
3592 | annotate_field (5); | |
3593 | printf_filtered ("What\n"); | |
8b93c638 | 3594 | #endif /* UI_OUT */ |
c4093a6a JM |
3595 | annotate_breakpoints_table (); |
3596 | } | |
3597 | ||
3598 | print_one_breakpoint (b, &last_addr); | |
3599 | } | |
3600 | ||
c906108c SS |
3601 | if (!found_a_breakpoint) |
3602 | { | |
8b93c638 JM |
3603 | #ifdef UI_OUT |
3604 | if (bnum == -1) | |
3605 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3606 | else | |
3607 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3608 | bnum); | |
3609 | #else | |
c906108c | 3610 | if (bnum == -1) |
c5aa993b | 3611 | printf_filtered ("No breakpoints or watchpoints.\n"); |
c906108c | 3612 | else |
c5aa993b | 3613 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); |
8b93c638 | 3614 | #endif /* UI_OUT */ |
c906108c SS |
3615 | } |
3616 | else | |
c4093a6a JM |
3617 | { |
3618 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3619 | that a comparison of an unsigned with -1 is always false. */ | |
3620 | if (last_addr != (CORE_ADDR) -1) | |
3621 | set_next_address (last_addr); | |
3622 | } | |
c906108c | 3623 | |
8b93c638 JM |
3624 | #ifdef UI_OUT |
3625 | ui_out_table_end (uiout); | |
3626 | #endif /* UI_OUT */ | |
c4093a6a JM |
3627 | /* FIXME? Should this be moved up so that it is only called when |
3628 | there have been breakpoints? */ | |
c906108c SS |
3629 | annotate_breakpoints_table_end (); |
3630 | } | |
3631 | ||
3632 | /* ARGSUSED */ | |
3633 | static void | |
fba45db2 | 3634 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3635 | { |
3636 | int bnum = -1; | |
3637 | ||
3638 | if (bnum_exp) | |
bb518678 | 3639 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3640 | |
3641 | breakpoint_1 (bnum, 0); | |
3642 | } | |
3643 | ||
c906108c | 3644 | /* ARGSUSED */ |
7a292a7a | 3645 | static void |
fba45db2 | 3646 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3647 | { |
3648 | int bnum = -1; | |
3649 | ||
3650 | if (bnum_exp) | |
bb518678 | 3651 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3652 | |
3653 | breakpoint_1 (bnum, 1); | |
3654 | } | |
3655 | ||
c906108c SS |
3656 | /* Print a message describing any breakpoints set at PC. */ |
3657 | ||
3658 | static void | |
fba45db2 | 3659 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c SS |
3660 | { |
3661 | register int others = 0; | |
3662 | register struct breakpoint *b; | |
3663 | ||
3664 | ALL_BREAKPOINTS (b) | |
3665 | if (b->address == pc) | |
c5aa993b JM |
3666 | if (overlay_debugging == 0 || |
3667 | b->section == section) | |
3668 | others++; | |
c906108c SS |
3669 | if (others > 0) |
3670 | { | |
3671 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3672 | ALL_BREAKPOINTS (b) | |
3673 | if (b->address == pc) | |
c5aa993b JM |
3674 | if (overlay_debugging == 0 || |
3675 | b->section == section) | |
3676 | { | |
3677 | others--; | |
d85310f7 MS |
3678 | printf_filtered ("%d%s%s ", |
3679 | b->number, | |
3680 | ((b->enable == disabled || | |
3681 | b->enable == shlib_disabled || | |
3682 | b->enable == call_disabled) ? " (disabled)" | |
3683 | : b->enable == permanent ? " (permanent)" | |
3684 | : ""), | |
3685 | (others > 1) ? "," | |
3686 | : ((others == 1) ? " and" : "")); | |
c5aa993b | 3687 | } |
c906108c SS |
3688 | printf_filtered ("also set at pc "); |
3689 | print_address_numeric (pc, 1, gdb_stdout); | |
3690 | printf_filtered (".\n"); | |
3691 | } | |
3692 | } | |
3693 | \f | |
3694 | /* Set the default place to put a breakpoint | |
3695 | for the `break' command with no arguments. */ | |
3696 | ||
3697 | void | |
fba45db2 KB |
3698 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3699 | int line) | |
c906108c SS |
3700 | { |
3701 | default_breakpoint_valid = valid; | |
3702 | default_breakpoint_address = addr; | |
3703 | default_breakpoint_symtab = symtab; | |
3704 | default_breakpoint_line = line; | |
3705 | } | |
3706 | ||
3707 | /* Rescan breakpoints at address ADDRESS, | |
3708 | marking the first one as "first" and any others as "duplicates". | |
c2c6d25f JM |
3709 | This is so that the bpt instruction is only inserted once. |
3710 | If we have a permanent breakpoint at ADDRESS, make that one | |
3711 | the official one, and the rest as duplicates. */ | |
c906108c SS |
3712 | |
3713 | static void | |
fba45db2 | 3714 | check_duplicates (CORE_ADDR address, asection *section) |
c906108c SS |
3715 | { |
3716 | register struct breakpoint *b; | |
3717 | register int count = 0; | |
c2c6d25f | 3718 | struct breakpoint *perm_bp = 0; |
c906108c SS |
3719 | |
3720 | if (address == 0) /* Watchpoints are uninteresting */ | |
3721 | return; | |
3722 | ||
3723 | ALL_BREAKPOINTS (b) | |
3724 | if (b->enable != disabled | |
3725 | && b->enable != shlib_disabled | |
3726 | && b->enable != call_disabled | |
3727 | && b->address == address | |
3728 | && (overlay_debugging == 0 || b->section == section)) | |
c5aa993b | 3729 | { |
c2c6d25f JM |
3730 | /* Have we found a permanent breakpoint? */ |
3731 | if (b->enable == permanent) | |
3732 | { | |
3733 | perm_bp = b; | |
3734 | break; | |
3735 | } | |
3736 | ||
c5aa993b JM |
3737 | count++; |
3738 | b->duplicate = count > 1; | |
3739 | } | |
c2c6d25f JM |
3740 | |
3741 | /* If we found a permanent breakpoint at this address, go over the | |
3742 | list again and declare all the other breakpoints there to be the | |
3743 | duplicates. */ | |
3744 | if (perm_bp) | |
3745 | { | |
3746 | perm_bp->duplicate = 0; | |
3747 | ||
3748 | /* Permanent breakpoint should always be inserted. */ | |
3749 | if (! perm_bp->inserted) | |
8e65ff28 AC |
3750 | internal_error (__FILE__, __LINE__, |
3751 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3752 | "actually inserted"); |
3753 | ||
3754 | ALL_BREAKPOINTS (b) | |
3755 | if (b != perm_bp) | |
3756 | { | |
3757 | if (b->inserted) | |
8e65ff28 AC |
3758 | internal_error (__FILE__, __LINE__, |
3759 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
3760 | "a permanent breakpoint"); |
3761 | ||
3762 | if (b->enable != disabled | |
3763 | && b->enable != shlib_disabled | |
3764 | && b->enable != call_disabled | |
3765 | && b->address == address | |
3766 | && (overlay_debugging == 0 || b->section == section)) | |
3767 | b->duplicate = 1; | |
3768 | } | |
3769 | } | |
c906108c SS |
3770 | } |
3771 | ||
3772 | /* Low level routine to set a breakpoint. | |
3773 | Takes as args the three things that every breakpoint must have. | |
3774 | Returns the breakpoint object so caller can set other things. | |
3775 | Does not set the breakpoint number! | |
3776 | Does not print anything. | |
3777 | ||
3778 | ==> This routine should not be called if there is a chance of later | |
3779 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
3780 | your arguments BEFORE calling this routine! */ | |
3781 | ||
3782 | struct breakpoint * | |
fba45db2 | 3783 | set_raw_breakpoint (struct symtab_and_line sal) |
c906108c SS |
3784 | { |
3785 | register struct breakpoint *b, *b1; | |
3786 | ||
3787 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3788 | memset (b, 0, sizeof (*b)); | |
3789 | b->address = sal.pc; | |
3790 | if (sal.symtab == NULL) | |
3791 | b->source_file = NULL; | |
3792 | else | |
3793 | b->source_file = savestring (sal.symtab->filename, | |
3794 | strlen (sal.symtab->filename)); | |
3795 | b->section = sal.section; | |
3796 | b->language = current_language->la_language; | |
3797 | b->input_radix = input_radix; | |
3798 | b->thread = -1; | |
3799 | b->line_number = sal.line; | |
3800 | b->enable = enabled; | |
3801 | b->next = 0; | |
3802 | b->silent = 0; | |
3803 | b->ignore_count = 0; | |
3804 | b->commands = NULL; | |
3805 | b->frame = 0; | |
3806 | b->dll_pathname = NULL; | |
3807 | b->triggered_dll_pathname = NULL; | |
3808 | b->forked_inferior_pid = 0; | |
3809 | b->exec_pathname = NULL; | |
3810 | ||
3811 | /* Add this breakpoint to the end of the chain | |
3812 | so that a list of breakpoints will come out in order | |
3813 | of increasing numbers. */ | |
3814 | ||
3815 | b1 = breakpoint_chain; | |
3816 | if (b1 == 0) | |
3817 | breakpoint_chain = b; | |
3818 | else | |
3819 | { | |
3820 | while (b1->next) | |
3821 | b1 = b1->next; | |
3822 | b1->next = b; | |
3823 | } | |
3824 | ||
3825 | check_duplicates (sal.pc, sal.section); | |
3826 | breakpoints_changed (); | |
3827 | ||
3828 | return b; | |
3829 | } | |
3830 | ||
c2c6d25f JM |
3831 | |
3832 | /* Note that the breakpoint object B describes a permanent breakpoint | |
3833 | instruction, hard-wired into the inferior's code. */ | |
3834 | void | |
3835 | make_breakpoint_permanent (struct breakpoint *b) | |
3836 | { | |
3837 | b->enable = permanent; | |
3838 | ||
3839 | /* By definition, permanent breakpoints are already present in the code. */ | |
3840 | b->inserted = 1; | |
3841 | } | |
3842 | ||
c906108c SS |
3843 | #ifdef GET_LONGJMP_TARGET |
3844 | ||
3845 | static void | |
fba45db2 | 3846 | create_longjmp_breakpoint (char *func_name) |
c906108c SS |
3847 | { |
3848 | struct symtab_and_line sal; | |
3849 | struct breakpoint *b; | |
3850 | ||
c5aa993b | 3851 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3852 | if (func_name != NULL) |
3853 | { | |
3854 | struct minimal_symbol *m; | |
3855 | ||
53a5351d JM |
3856 | m = lookup_minimal_symbol_text (func_name, NULL, |
3857 | (struct objfile *) NULL); | |
c906108c SS |
3858 | if (m) |
3859 | sal.pc = SYMBOL_VALUE_ADDRESS (m); | |
3860 | else | |
3861 | return; | |
3862 | } | |
3863 | sal.section = find_pc_overlay (sal.pc); | |
3864 | b = set_raw_breakpoint (sal); | |
c5aa993b JM |
3865 | if (!b) |
3866 | return; | |
c906108c SS |
3867 | |
3868 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; | |
3869 | b->disposition = donttouch; | |
3870 | b->enable = disabled; | |
3871 | b->silent = 1; | |
3872 | if (func_name) | |
4fcf66da | 3873 | b->addr_string = xstrdup (func_name); |
c906108c SS |
3874 | b->number = internal_breakpoint_number--; |
3875 | } | |
3876 | ||
c5aa993b | 3877 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
c906108c | 3878 | |
53a5351d JM |
3879 | /* Call this routine when stepping and nexting to enable a breakpoint |
3880 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3881 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3882 | ||
3883 | void | |
fba45db2 | 3884 | enable_longjmp_breakpoint (void) |
c906108c SS |
3885 | { |
3886 | register struct breakpoint *b; | |
3887 | ||
3888 | ALL_BREAKPOINTS (b) | |
3889 | if (b->type == bp_longjmp) | |
c5aa993b JM |
3890 | { |
3891 | b->enable = enabled; | |
3892 | check_duplicates (b->address, b->section); | |
3893 | } | |
c906108c SS |
3894 | } |
3895 | ||
3896 | void | |
fba45db2 | 3897 | disable_longjmp_breakpoint (void) |
c906108c SS |
3898 | { |
3899 | register struct breakpoint *b; | |
3900 | ||
3901 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3902 | if (b->type == bp_longjmp |
c906108c | 3903 | || b->type == bp_longjmp_resume) |
c5aa993b JM |
3904 | { |
3905 | b->enable = disabled; | |
3906 | check_duplicates (b->address, b->section); | |
3907 | } | |
c906108c SS |
3908 | } |
3909 | ||
c4093a6a | 3910 | struct breakpoint * |
fba45db2 | 3911 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
3912 | { |
3913 | struct breakpoint *b; | |
3914 | struct symtab_and_line sal; | |
3915 | char addr_string[80]; /* Surely an addr can't be longer than that. */ | |
3916 | ||
3917 | INIT_SAL (&sal); /* initialize to zeroes */ | |
3918 | sal.pc = address; | |
3919 | sal.section = find_pc_overlay (sal.pc); | |
3920 | if ((b = set_raw_breakpoint (sal)) == NULL) | |
3921 | return NULL; | |
3922 | ||
3923 | b->number = internal_breakpoint_number--; | |
3924 | b->disposition = donttouch; | |
3925 | b->type = bp_thread_event; /* XXX: do we need a new type? | |
3926 | bp_thread_event */ | |
3927 | b->enable = enabled; | |
3928 | /* addr_string has to be used or breakpoint_re_set will delete me. */ | |
3929 | sprintf (addr_string, "*0x%s", paddr (b->address)); | |
4fcf66da | 3930 | b->addr_string = xstrdup (addr_string); |
c4093a6a JM |
3931 | |
3932 | return b; | |
3933 | } | |
3934 | ||
3935 | void | |
3936 | remove_thread_event_breakpoints (void) | |
3937 | { | |
3938 | struct breakpoint *b, *temp; | |
3939 | ||
3940 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3941 | if (b->type == bp_thread_event) | |
3942 | delete_breakpoint (b); | |
3943 | } | |
3944 | ||
c906108c SS |
3945 | #ifdef SOLIB_ADD |
3946 | void | |
fba45db2 | 3947 | remove_solib_event_breakpoints (void) |
c906108c SS |
3948 | { |
3949 | register struct breakpoint *b, *temp; | |
3950 | ||
3951 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3952 | if (b->type == bp_shlib_event) | |
c5aa993b | 3953 | delete_breakpoint (b); |
c906108c SS |
3954 | } |
3955 | ||
c2c6d25f | 3956 | struct breakpoint * |
fba45db2 | 3957 | create_solib_event_breakpoint (CORE_ADDR address) |
c906108c SS |
3958 | { |
3959 | struct breakpoint *b; | |
3960 | struct symtab_and_line sal; | |
3961 | ||
c5aa993b | 3962 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3963 | sal.pc = address; |
3964 | sal.section = find_pc_overlay (sal.pc); | |
3965 | b = set_raw_breakpoint (sal); | |
3966 | b->number = internal_breakpoint_number--; | |
3967 | b->disposition = donttouch; | |
3968 | b->type = bp_shlib_event; | |
c2c6d25f JM |
3969 | |
3970 | return b; | |
c906108c SS |
3971 | } |
3972 | ||
104c1213 JM |
3973 | /* Disable any breakpoints that are on code in shared libraries. Only |
3974 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
3975 | ||
c906108c | 3976 | void |
fba45db2 | 3977 | disable_breakpoints_in_shlibs (int silent) |
c906108c | 3978 | { |
c5aa993b JM |
3979 | struct breakpoint *b; |
3980 | int disabled_shlib_breaks = 0; | |
c906108c SS |
3981 | |
3982 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
3983 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3984 | { |
c906108c | 3985 | #if defined (PC_SOLIB) |
c5aa993b JM |
3986 | if (((b->type == bp_breakpoint) || |
3987 | (b->type == bp_hardware_breakpoint)) && | |
104c1213 | 3988 | b->enable == enabled && |
c5aa993b JM |
3989 | !b->duplicate && |
3990 | PC_SOLIB (b->address)) | |
3991 | { | |
3992 | b->enable = shlib_disabled; | |
3993 | if (!silent) | |
3994 | { | |
3995 | if (!disabled_shlib_breaks) | |
3996 | { | |
3997 | target_terminal_ours_for_output (); | |
53a5351d | 3998 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
3999 | } |
4000 | disabled_shlib_breaks = 1; | |
53a5351d | 4001 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
4002 | } |
4003 | } | |
c906108c | 4004 | #endif |
c5aa993b | 4005 | } |
c906108c SS |
4006 | } |
4007 | ||
4008 | /* Try to reenable any breakpoints in shared libraries. */ | |
4009 | void | |
fba45db2 | 4010 | re_enable_breakpoints_in_shlibs (void) |
c906108c SS |
4011 | { |
4012 | struct breakpoint *b; | |
4013 | ||
4014 | ALL_BREAKPOINTS (b) | |
4015 | if (b->enable == shlib_disabled) | |
c5aa993b JM |
4016 | { |
4017 | char buf[1]; | |
c906108c | 4018 | |
c5aa993b JM |
4019 | /* Do not reenable the breakpoint if the shared library |
4020 | is still not mapped in. */ | |
4021 | if (target_read_memory (b->address, buf, 1) == 0) | |
4022 | b->enable = enabled; | |
4023 | } | |
c906108c SS |
4024 | } |
4025 | ||
4026 | #endif | |
4027 | ||
4028 | static void | |
fba45db2 KB |
4029 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4030 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4031 | { |
c5aa993b | 4032 | struct breakpoint *b; |
c906108c | 4033 | struct symtabs_and_lines sals; |
c5aa993b JM |
4034 | struct cleanup *old_chain; |
4035 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4036 | char *addr_start = hookname; |
4037 | char *addr_end = NULL; | |
4038 | char **canonical = (char **) NULL; | |
4039 | int thread = -1; /* All threads. */ | |
4040 | ||
c906108c SS |
4041 | /* Set a breakpoint on the specified hook. */ |
4042 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
4043 | addr_end = hookname; | |
c5aa993b | 4044 | |
c906108c SS |
4045 | if (sals.nelts == 0) |
4046 | { | |
4047 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4048 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4049 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4050 | return; | |
4051 | } | |
4052 | if (sals.nelts != 1) | |
4053 | { | |
53a5351d | 4054 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4055 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4056 | return; | |
4057 | } | |
4058 | ||
53a5351d JM |
4059 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4060 | in case the following errors out. */ | |
b8c9b27d | 4061 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4062 | if (canonical != (char **) NULL) |
c906108c | 4063 | { |
b8c9b27d | 4064 | make_cleanup (xfree, canonical); |
c906108c SS |
4065 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4066 | if (canonical[0] != NULL) | |
b8c9b27d | 4067 | make_cleanup (xfree, canonical[0]); |
c906108c | 4068 | } |
c5aa993b | 4069 | |
c906108c | 4070 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4071 | |
c906108c | 4072 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4073 | if (canonical != (char **) NULL) |
c906108c | 4074 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4075 | |
c906108c SS |
4076 | b = set_raw_breakpoint (sals.sals[0]); |
4077 | set_breakpoint_count (breakpoint_count + 1); | |
4078 | b->number = breakpoint_count; | |
4079 | b->cond = NULL; | |
53a5351d JM |
4080 | b->cond_string = (cond_string == NULL) ? |
4081 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4082 | b->thread = thread; |
c5aa993b JM |
4083 | |
4084 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4085 | b->addr_string = canonical[0]; |
4086 | else if (addr_start) | |
4087 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4088 | |
c906108c SS |
4089 | b->enable = enabled; |
4090 | b->disposition = tempflag ? del : donttouch; | |
c5aa993b | 4091 | |
c906108c SS |
4092 | if (dll_pathname == NULL) |
4093 | b->dll_pathname = NULL; | |
4094 | else | |
4095 | { | |
4096 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4097 | strcpy (b->dll_pathname, dll_pathname); | |
4098 | } | |
4099 | b->type = bp_kind; | |
c5aa993b | 4100 | |
c906108c SS |
4101 | mention (b); |
4102 | do_cleanups (old_chain); | |
4103 | } | |
4104 | ||
4105 | void | |
fba45db2 KB |
4106 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4107 | char *dll_pathname, char *cond_string) | |
c906108c | 4108 | { |
53a5351d JM |
4109 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4110 | cond_string, bp_catch_load); | |
c906108c SS |
4111 | } |
4112 | ||
4113 | void | |
fba45db2 KB |
4114 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4115 | char *dll_pathname, char *cond_string) | |
c906108c | 4116 | { |
53a5351d JM |
4117 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4118 | cond_string, bp_catch_unload); | |
c906108c SS |
4119 | } |
4120 | ||
4121 | static void | |
fba45db2 KB |
4122 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4123 | enum bptype bp_kind) | |
c906108c | 4124 | { |
c5aa993b JM |
4125 | struct symtab_and_line sal; |
4126 | struct breakpoint *b; | |
4127 | int thread = -1; /* All threads. */ | |
4128 | ||
4129 | INIT_SAL (&sal); | |
c906108c SS |
4130 | sal.pc = 0; |
4131 | sal.symtab = NULL; | |
4132 | sal.line = 0; | |
c5aa993b | 4133 | |
c906108c SS |
4134 | b = set_raw_breakpoint (sal); |
4135 | set_breakpoint_count (breakpoint_count + 1); | |
4136 | b->number = breakpoint_count; | |
4137 | b->cond = NULL; | |
53a5351d JM |
4138 | b->cond_string = (cond_string == NULL) ? |
4139 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4140 | b->thread = thread; |
4141 | b->addr_string = NULL; | |
4142 | b->enable = enabled; | |
4143 | b->disposition = tempflag ? del : donttouch; | |
4144 | b->forked_inferior_pid = 0; | |
c5aa993b | 4145 | |
c906108c | 4146 | b->type = bp_kind; |
c5aa993b | 4147 | |
c906108c SS |
4148 | mention (b); |
4149 | } | |
4150 | ||
4151 | void | |
fba45db2 | 4152 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4153 | { |
4154 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4155 | } | |
c5aa993b | 4156 | |
c906108c | 4157 | void |
fba45db2 | 4158 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4159 | { |
4160 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4161 | } | |
4162 | ||
4163 | void | |
fba45db2 | 4164 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4165 | { |
c5aa993b JM |
4166 | struct symtab_and_line sal; |
4167 | struct breakpoint *b; | |
4168 | int thread = -1; /* All threads. */ | |
c906108c | 4169 | |
c5aa993b | 4170 | INIT_SAL (&sal); |
c906108c SS |
4171 | sal.pc = 0; |
4172 | sal.symtab = NULL; | |
4173 | sal.line = 0; | |
4174 | ||
4175 | b = set_raw_breakpoint (sal); | |
4176 | set_breakpoint_count (breakpoint_count + 1); | |
4177 | b->number = breakpoint_count; | |
4178 | b->cond = NULL; | |
53a5351d JM |
4179 | b->cond_string = (cond_string == NULL) ? |
4180 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4181 | b->thread = thread; |
4182 | b->addr_string = NULL; | |
4183 | b->enable = enabled; | |
4184 | b->disposition = tempflag ? del : donttouch; | |
4185 | ||
4186 | b->type = bp_catch_exec; | |
4187 | ||
4188 | mention (b); | |
4189 | } | |
4190 | ||
4191 | static int | |
fba45db2 | 4192 | hw_breakpoint_used_count (void) |
c906108c SS |
4193 | { |
4194 | register struct breakpoint *b; | |
4195 | int i = 0; | |
4196 | ||
4197 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4198 | { |
4199 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
4200 | i++; | |
4201 | } | |
c906108c SS |
4202 | |
4203 | return i; | |
4204 | } | |
4205 | ||
4206 | static int | |
fba45db2 | 4207 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c SS |
4208 | { |
4209 | register struct breakpoint *b; | |
4210 | int i = 0; | |
4211 | ||
4212 | *other_type_used = 0; | |
4213 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4214 | { |
4215 | if (b->enable == enabled) | |
4216 | { | |
4217 | if (b->type == type) | |
4218 | i++; | |
4219 | else if ((b->type == bp_hardware_watchpoint || | |
4220 | b->type == bp_read_watchpoint || | |
4221 | b->type == bp_access_watchpoint) | |
4222 | && b->enable == enabled) | |
4223 | *other_type_used = 1; | |
4224 | } | |
4225 | } | |
c906108c SS |
4226 | return i; |
4227 | } | |
4228 | ||
53a5351d JM |
4229 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4230 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4231 | |
53a5351d JM |
4232 | FIXME - This ought to be done by setting a temporary breakpoint |
4233 | that gets deleted automatically... */ | |
c906108c SS |
4234 | |
4235 | void | |
fba45db2 | 4236 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_info *frame) |
c906108c SS |
4237 | { |
4238 | register struct breakpoint *b; | |
4239 | ||
4240 | ALL_BREAKPOINTS (b) | |
4241 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
4242 | { |
4243 | b->address = pc; | |
4244 | b->enable = enabled; | |
4245 | if (frame != NULL) | |
4246 | b->frame = frame->frame; | |
4247 | else | |
4248 | b->frame = 0; | |
4249 | check_duplicates (b->address, b->section); | |
4250 | return; | |
4251 | } | |
c906108c SS |
4252 | } |
4253 | ||
4254 | void | |
fba45db2 | 4255 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4256 | { |
c5aa993b | 4257 | struct breakpoint *b; |
c906108c SS |
4258 | |
4259 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4260 | { |
4261 | if (((b->type == bp_watchpoint) | |
4262 | || (b->type == bp_hardware_watchpoint) | |
4263 | || (b->type == bp_read_watchpoint) | |
4264 | || (b->type == bp_access_watchpoint) | |
4265 | || ep_is_exception_catchpoint (b)) | |
4266 | && (b->enable == enabled)) | |
4267 | { | |
4268 | b->enable = call_disabled; | |
4269 | check_duplicates (b->address, b->section); | |
4270 | } | |
4271 | } | |
c906108c SS |
4272 | } |
4273 | ||
4274 | void | |
fba45db2 | 4275 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4276 | { |
c5aa993b | 4277 | struct breakpoint *b; |
c906108c SS |
4278 | |
4279 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4280 | { |
4281 | if (((b->type == bp_watchpoint) | |
4282 | || (b->type == bp_hardware_watchpoint) | |
4283 | || (b->type == bp_read_watchpoint) | |
4284 | || (b->type == bp_access_watchpoint) | |
4285 | || ep_is_exception_catchpoint (b)) | |
4286 | && (b->enable == call_disabled)) | |
4287 | { | |
4288 | b->enable = enabled; | |
4289 | check_duplicates (b->address, b->section); | |
4290 | } | |
4291 | } | |
c906108c SS |
4292 | } |
4293 | ||
4294 | ||
4295 | /* Set a breakpoint that will evaporate an end of command | |
4296 | at address specified by SAL. | |
4297 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4298 | ||
4299 | struct breakpoint * | |
fba45db2 KB |
4300 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_info *frame, |
4301 | enum bptype type) | |
c906108c SS |
4302 | { |
4303 | register struct breakpoint *b; | |
4304 | b = set_raw_breakpoint (sal); | |
4305 | b->type = type; | |
4306 | b->enable = enabled; | |
4307 | b->disposition = donttouch; | |
4308 | b->frame = (frame ? frame->frame : 0); | |
4309 | ||
4310 | /* If we're debugging a multi-threaded program, then we | |
4311 | want momentary breakpoints to be active in only a | |
4312 | single thread of control. */ | |
4313 | if (in_thread_list (inferior_pid)) | |
4314 | b->thread = pid_to_thread_id (inferior_pid); | |
4315 | ||
4316 | return b; | |
4317 | } | |
c906108c | 4318 | \f |
c5aa993b | 4319 | |
c906108c SS |
4320 | /* Tell the user we have just set a breakpoint B. */ |
4321 | ||
4322 | static void | |
fba45db2 | 4323 | mention (struct breakpoint *b) |
c906108c SS |
4324 | { |
4325 | int say_where = 0; | |
8b93c638 JM |
4326 | #ifdef UI_OUT |
4327 | struct cleanup *old_chain; | |
4328 | struct ui_stream *stb; | |
4329 | ||
4330 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4331 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 4332 | #endif /* UI_OUT */ |
c906108c SS |
4333 | |
4334 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4335 | watchpoint) other than breakpoint creation. It should be possible to | |
4336 | clean this up and at the same time replace the random calls to | |
4337 | breakpoint_changed with this hook, as has already been done for | |
4338 | delete_breakpoint_hook and so on. */ | |
4339 | if (create_breakpoint_hook) | |
4340 | create_breakpoint_hook (b); | |
104c1213 | 4341 | breakpoint_create_event (b->number); |
c906108c SS |
4342 | |
4343 | switch (b->type) | |
4344 | { | |
4345 | case bp_none: | |
4346 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4347 | break; | |
8b93c638 JM |
4348 | #ifdef UI_OUT |
4349 | case bp_watchpoint: | |
4350 | ui_out_text (uiout, "Watchpoint "); | |
4351 | ui_out_list_begin (uiout, "wpt"); | |
4352 | ui_out_field_int (uiout, "number", b->number); | |
4353 | ui_out_text (uiout, ": "); | |
4354 | print_expression (b->exp, stb->stream); | |
4355 | ui_out_field_stream (uiout, "exp", stb); | |
4356 | ui_out_list_end (uiout); | |
4357 | break; | |
4358 | case bp_hardware_watchpoint: | |
4359 | ui_out_text (uiout, "Hardware watchpoint "); | |
4360 | ui_out_list_begin (uiout, "wpt"); | |
4361 | ui_out_field_int (uiout, "number", b->number); | |
4362 | ui_out_text (uiout, ": "); | |
4363 | print_expression (b->exp, stb->stream); | |
4364 | ui_out_field_stream (uiout, "exp", stb); | |
4365 | ui_out_list_end (uiout); | |
4366 | break; | |
4367 | #else | |
c906108c SS |
4368 | case bp_watchpoint: |
4369 | printf_filtered ("Watchpoint %d: ", b->number); | |
4370 | print_expression (b->exp, gdb_stdout); | |
4371 | break; | |
4372 | case bp_hardware_watchpoint: | |
4373 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
4374 | print_expression (b->exp, gdb_stdout); | |
4375 | break; | |
8b93c638 JM |
4376 | #endif |
4377 | #ifdef UI_OUT | |
4378 | case bp_read_watchpoint: | |
4379 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4380 | ui_out_list_begin (uiout, "hw-rwpt"); | |
4381 | ui_out_field_int (uiout, "number", b->number); | |
4382 | ui_out_text (uiout, ": "); | |
4383 | print_expression (b->exp, stb->stream); | |
4384 | ui_out_field_stream (uiout, "exp", stb); | |
4385 | ui_out_list_end (uiout); | |
4386 | break; | |
4387 | case bp_access_watchpoint: | |
4388 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4389 | ui_out_list_begin (uiout, "hw-awpt"); | |
4390 | ui_out_field_int (uiout, "number", b->number); | |
4391 | ui_out_text (uiout, ": "); | |
4392 | print_expression (b->exp, stb->stream); | |
4393 | ui_out_field_stream (uiout, "exp", stb); | |
4394 | ui_out_list_end (uiout); | |
4395 | break; | |
4396 | #else | |
c906108c SS |
4397 | case bp_read_watchpoint: |
4398 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
4399 | print_expression (b->exp, gdb_stdout); | |
4400 | break; | |
4401 | case bp_access_watchpoint: | |
53a5351d JM |
4402 | printf_filtered ("Hardware access (read/write) watchpoint %d: ", |
4403 | b->number); | |
c906108c SS |
4404 | print_expression (b->exp, gdb_stdout); |
4405 | break; | |
8b93c638 | 4406 | #endif |
c906108c | 4407 | case bp_breakpoint: |
fb40c209 AC |
4408 | #ifdef UI_OUT |
4409 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4410 | { | |
4411 | say_where = 0; | |
4412 | break; | |
4413 | } | |
4414 | #endif | |
c906108c SS |
4415 | printf_filtered ("Breakpoint %d", b->number); |
4416 | say_where = 1; | |
4417 | break; | |
4418 | case bp_hardware_breakpoint: | |
fb40c209 AC |
4419 | #ifdef UI_OUT |
4420 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4421 | { | |
4422 | say_where = 0; | |
4423 | break; | |
4424 | } | |
4425 | #endif | |
c906108c SS |
4426 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
4427 | say_where = 1; | |
4428 | break; | |
4429 | case bp_catch_load: | |
4430 | case bp_catch_unload: | |
4431 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
4432 | b->number, |
4433 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
4434 | (b->dll_pathname != NULL) ? |
4435 | b->dll_pathname : "<any library>"); | |
c906108c SS |
4436 | break; |
4437 | case bp_catch_fork: | |
4438 | case bp_catch_vfork: | |
4439 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4440 | b->number, |
4441 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
4442 | break; |
4443 | case bp_catch_exec: | |
4444 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 4445 | b->number); |
c906108c SS |
4446 | break; |
4447 | case bp_catch_catch: | |
4448 | case bp_catch_throw: | |
4449 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4450 | b->number, |
4451 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
4452 | break; |
4453 | ||
4454 | case bp_until: | |
4455 | case bp_finish: | |
4456 | case bp_longjmp: | |
4457 | case bp_longjmp_resume: | |
4458 | case bp_step_resume: | |
4459 | case bp_through_sigtramp: | |
4460 | case bp_call_dummy: | |
4461 | case bp_watchpoint_scope: | |
4462 | case bp_shlib_event: | |
c4093a6a | 4463 | case bp_thread_event: |
c906108c SS |
4464 | break; |
4465 | } | |
4466 | if (say_where) | |
4467 | { | |
4468 | if (addressprint || b->source_file == NULL) | |
4469 | { | |
4470 | printf_filtered (" at "); | |
4471 | print_address_numeric (b->address, 1, gdb_stdout); | |
4472 | } | |
4473 | if (b->source_file) | |
4474 | printf_filtered (": file %s, line %d.", | |
4475 | b->source_file, b->line_number); | |
c5aa993b JM |
4476 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, b, 1)); |
4477 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
c906108c | 4478 | } |
8b93c638 JM |
4479 | #ifdef UI_OUT |
4480 | do_cleanups (old_chain); | |
fb40c209 AC |
4481 | #endif |
4482 | #ifdef UI_OUT | |
4483 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4484 | return; | |
8b93c638 | 4485 | #endif |
c906108c SS |
4486 | printf_filtered ("\n"); |
4487 | } | |
c906108c | 4488 | \f |
c5aa993b | 4489 | |
c3f6f71d JM |
4490 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4491 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4492 | COND[i] and COND_STRING[i] values. | |
4493 | ||
4494 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4495 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4496 | array contents). If the function fails (error() is called), the | |
4497 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4498 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4499 | |
4500 | static void | |
c3f6f71d JM |
4501 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4502 | struct expression **cond, char **cond_string, | |
4503 | enum bptype type, enum bpdisp disposition, | |
4504 | int thread, int ignore_count, int from_tty) | |
c906108c | 4505 | { |
c3f6f71d JM |
4506 | if (type == bp_hardware_breakpoint) |
4507 | { | |
4508 | int i = hw_breakpoint_used_count (); | |
4509 | int target_resources_ok = | |
4510 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4511 | i + sals.nelts, 0); | |
4512 | if (target_resources_ok == 0) | |
4513 | error ("No hardware breakpoint support in the target."); | |
4514 | else if (target_resources_ok < 0) | |
4515 | error ("Hardware breakpoints used exceeds limit."); | |
4516 | } | |
c906108c | 4517 | |
c3f6f71d JM |
4518 | /* Now set all the breakpoints. */ |
4519 | { | |
4520 | int i; | |
4521 | for (i = 0; i < sals.nelts; i++) | |
4522 | { | |
4523 | struct breakpoint *b; | |
4524 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4525 | |
c3f6f71d JM |
4526 | if (from_tty) |
4527 | describe_other_breakpoints (sal.pc, sal.section); | |
4528 | ||
4529 | b = set_raw_breakpoint (sal); | |
4530 | set_breakpoint_count (breakpoint_count + 1); | |
4531 | b->number = breakpoint_count; | |
4532 | b->type = type; | |
4533 | b->cond = cond[i]; | |
4534 | b->thread = thread; | |
4535 | b->addr_string = addr_string[i]; | |
4536 | b->cond_string = cond_string[i]; | |
4537 | b->ignore_count = ignore_count; | |
4538 | b->enable = enabled; | |
4539 | b->disposition = disposition; | |
4540 | mention (b); | |
4541 | } | |
4542 | } | |
4543 | } | |
c906108c | 4544 | |
c3f6f71d JM |
4545 | /* Parse ARG which is assumed to be a SAL specification possibly |
4546 | followed by conditionals. On return, SALS contains an array of SAL | |
4547 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4548 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4549 | |
c3f6f71d JM |
4550 | void |
4551 | parse_breakpoint_sals (char **address, | |
4552 | struct symtabs_and_lines *sals, | |
4553 | char ***addr_string) | |
4554 | { | |
4555 | char *addr_start = *address; | |
4556 | *addr_string = NULL; | |
4557 | /* If no arg given, or if first arg is 'if ', use the default | |
4558 | breakpoint. */ | |
4559 | if ((*address) == NULL | |
4560 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4561 | { |
4562 | if (default_breakpoint_valid) | |
4563 | { | |
c3f6f71d JM |
4564 | struct symtab_and_line sal; |
4565 | INIT_SAL (&sal); /* initialize to zeroes */ | |
4566 | sals->sals = (struct symtab_and_line *) | |
c906108c SS |
4567 | xmalloc (sizeof (struct symtab_and_line)); |
4568 | sal.pc = default_breakpoint_address; | |
4569 | sal.line = default_breakpoint_line; | |
4570 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4571 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4572 | sals->sals[0] = sal; |
4573 | sals->nelts = 1; | |
c906108c SS |
4574 | } |
4575 | else | |
4576 | error ("No default breakpoint address now."); | |
4577 | } | |
4578 | else | |
4579 | { | |
c906108c | 4580 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4581 | current_source_symtab (which is decode_line_1's default). This |
4582 | should produce the results we want almost all of the time while | |
4583 | leaving default_breakpoint_* alone. */ | |
c906108c SS |
4584 | if (default_breakpoint_valid |
4585 | && (!current_source_symtab | |
c3f6f71d JM |
4586 | || (strchr ("+-", (*address)[0]) != NULL))) |
4587 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, | |
4588 | default_breakpoint_line, addr_string); | |
c906108c | 4589 | else |
c3f6f71d | 4590 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); |
c906108c | 4591 | } |
c3f6f71d JM |
4592 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4593 | if (sals->nelts > 0 && *addr_string == NULL) | |
4594 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4595 | if (addr_start != (*address)) | |
c906108c | 4596 | { |
c3f6f71d JM |
4597 | int i; |
4598 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4599 | { |
c3f6f71d JM |
4600 | /* Add the string if not present. */ |
4601 | if ((*addr_string)[i] == NULL) | |
4602 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4603 | } |
4604 | } | |
c3f6f71d | 4605 | } |
c906108c | 4606 | |
c906108c | 4607 | |
c3f6f71d JM |
4608 | /* Convert each SAL into a real PC. Verify that the PC can be |
4609 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4610 | |
c3f6f71d JM |
4611 | void |
4612 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, | |
4613 | char *address) | |
4614 | { | |
4615 | int i; | |
4616 | for (i = 0; i < sals->nelts; i++) | |
4617 | { | |
4618 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4619 | |
4620 | /* It's possible for the PC to be nonzero, but still an illegal | |
4621 | value on some targets. | |
4622 | ||
4623 | For example, on HP-UX if you start gdb, and before running the | |
4624 | inferior you try to set a breakpoint on a shared library function | |
4625 | "foo" where the inferior doesn't call "foo" directly but does | |
4626 | pass its address to another function call, then we do find a | |
4627 | minimal symbol for the "foo", but it's address is invalid. | |
4628 | (Appears to be an index into a table that the loader sets up | |
4629 | when the inferior is run.) | |
4630 | ||
4631 | Give the target a chance to bless sals.sals[i].pc before we | |
4632 | try to make a breakpoint for it. */ | |
c3f6f71d | 4633 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4634 | { |
c3f6f71d JM |
4635 | if (address == NULL) |
4636 | error ("Cannot break without a running program."); | |
4637 | else | |
4638 | error ("Cannot break on %s without a running program.", | |
4639 | address); | |
c5aa993b | 4640 | } |
c3f6f71d JM |
4641 | } |
4642 | } | |
4643 | ||
4644 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4645 | flag: first bit : 0 non-temporary, 1 temporary. | |
4646 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4647 | |
c3f6f71d | 4648 | static void |
fba45db2 | 4649 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d JM |
4650 | { |
4651 | int tempflag, hardwareflag; | |
4652 | struct symtabs_and_lines sals; | |
4653 | register struct expression **cond = 0; | |
4654 | /* Pointers in arg to the start, and one past the end, of the | |
4655 | condition. */ | |
4656 | char **cond_string = (char **) NULL; | |
4657 | char *addr_start = arg; | |
4658 | char **addr_string; | |
4659 | struct cleanup *old_chain; | |
4660 | struct cleanup *breakpoint_chain = NULL; | |
4661 | int i; | |
4662 | int thread = -1; | |
4663 | int ignore_count = 0; | |
4664 | ||
4665 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4666 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4667 | |
c3f6f71d JM |
4668 | sals.sals = NULL; |
4669 | sals.nelts = 0; | |
4670 | addr_string = NULL; | |
4671 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4672 | ||
4673 | if (!sals.nelts) | |
4674 | return; | |
4675 | ||
4676 | /* Create a chain of things that always need to be cleaned up. */ | |
4677 | old_chain = make_cleanup (null_cleanup, 0); | |
4678 | ||
4679 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4680 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4681 | |
4682 | /* Cleanup the addr_string array but not its contents. */ | |
b8c9b27d | 4683 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4684 | |
4685 | /* Allocate space for all the cond expressions. */ | |
4686 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4687 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4688 | |
4689 | /* Allocate space for all the cond strings. */ | |
4690 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4691 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4692 | |
4693 | /* ----------------------------- SNIP ----------------------------- | |
4694 | Anything added to the cleanup chain beyond this point is assumed | |
4695 | to be part of a breakpoint. If the breakpoint create succeeds | |
4696 | then the memory is not reclaimed. */ | |
4697 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4698 | ||
4699 | /* Mark the contents of the addr_string for cleanup. These go on | |
4700 | the breakpoint_chain and only occure if the breakpoint create | |
4701 | fails. */ | |
4702 | for (i = 0; i < sals.nelts; i++) | |
4703 | { | |
4704 | if (addr_string[i] != NULL) | |
b8c9b27d | 4705 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
4706 | } |
4707 | ||
4708 | /* Resolve all line numbers to PC's and verify that the addresses | |
4709 | are ok for the target. */ | |
4710 | breakpoint_sals_to_pc (&sals, addr_start); | |
4711 | ||
4712 | /* Verify that condition can be parsed, before setting any | |
4713 | breakpoints. Allocate a separate condition expression for each | |
4714 | breakpoint. */ | |
4715 | thread = -1; /* No specific thread yet */ | |
4716 | for (i = 0; i < sals.nelts; i++) | |
4717 | { | |
4718 | char *tok = arg; | |
c906108c SS |
4719 | while (tok && *tok) |
4720 | { | |
c3f6f71d JM |
4721 | char *end_tok; |
4722 | int toklen; | |
4723 | char *cond_start = NULL; | |
4724 | char *cond_end = NULL; | |
c906108c SS |
4725 | while (*tok == ' ' || *tok == '\t') |
4726 | tok++; | |
4727 | ||
4728 | end_tok = tok; | |
4729 | ||
4730 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4731 | end_tok++; | |
4732 | ||
4733 | toklen = end_tok - tok; | |
4734 | ||
4735 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4736 | { | |
4737 | tok = cond_start = end_tok + 1; | |
c3f6f71d | 4738 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
b8c9b27d | 4739 | make_cleanup (xfree, cond[i]); |
c906108c | 4740 | cond_end = tok; |
c3f6f71d | 4741 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
b8c9b27d | 4742 | make_cleanup (xfree, cond_string[i]); |
c906108c SS |
4743 | } |
4744 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4745 | { | |
4746 | char *tmptok; | |
4747 | ||
4748 | tok = end_tok + 1; | |
4749 | tmptok = tok; | |
4750 | thread = strtol (tok, &tok, 0); | |
4751 | if (tok == tmptok) | |
4752 | error ("Junk after thread keyword."); | |
4753 | if (!valid_thread_id (thread)) | |
4754 | error ("Unknown thread %d\n", thread); | |
4755 | } | |
4756 | else | |
4757 | error ("Junk at end of arguments."); | |
4758 | } | |
4759 | } | |
c906108c | 4760 | |
c3f6f71d JM |
4761 | create_breakpoints (sals, addr_string, cond, cond_string, |
4762 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4763 | tempflag ? del : donttouch, | |
4764 | thread, ignore_count, from_tty); | |
4765 | ||
4766 | if (sals.nelts > 1) | |
4767 | { | |
4768 | warning ("Multiple breakpoints were set."); | |
4769 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4770 | } |
c3f6f71d JM |
4771 | /* That's it. Discard the cleanups for data inserted into the |
4772 | breakpoint. */ | |
4773 | discard_cleanups (breakpoint_chain); | |
4774 | /* But cleanup everything else. */ | |
4775 | do_cleanups (old_chain); | |
4776 | } | |
c906108c | 4777 | |
c3f6f71d JM |
4778 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
4779 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 4780 | |
c3f6f71d JM |
4781 | struct captured_breakpoint_args |
4782 | { | |
4783 | char *address; | |
4784 | char *condition; | |
4785 | int hardwareflag; | |
4786 | int tempflag; | |
4787 | int thread; | |
4788 | int ignore_count; | |
4789 | }; | |
4790 | ||
4791 | static int | |
4792 | do_captured_breakpoint (void *data) | |
4793 | { | |
4794 | struct captured_breakpoint_args *args = data; | |
4795 | struct symtabs_and_lines sals; | |
4796 | register struct expression **cond; | |
4797 | struct cleanup *old_chain; | |
4798 | struct cleanup *breakpoint_chain = NULL; | |
4799 | int i; | |
4800 | char **addr_string; | |
4801 | char **cond_string; | |
4802 | ||
4803 | char *address_end; | |
4804 | ||
4805 | /* Parse the source and lines spec. Delay check that the expression | |
4806 | didn't contain trailing garbage until after cleanups are in | |
4807 | place. */ | |
4808 | sals.sals = NULL; | |
4809 | sals.nelts = 0; | |
4810 | address_end = args->address; | |
4811 | addr_string = NULL; | |
4812 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
4813 | ||
4814 | if (!sals.nelts) | |
4815 | return GDB_RC_NONE; | |
4816 | ||
4817 | /* Create a chain of things at always need to be cleaned up. */ | |
4818 | old_chain = make_cleanup (null_cleanup, 0); | |
4819 | ||
4820 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 4821 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4822 | |
4823 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4824 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4825 | |
4826 | /* Allocate space for all the cond expressions. */ | |
4827 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4828 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4829 | |
4830 | /* Allocate space for all the cond strings. */ | |
4831 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4832 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4833 | |
4834 | /* ----------------------------- SNIP ----------------------------- | |
4835 | Anything added to the cleanup chain beyond this point is assumed | |
4836 | to be part of a breakpoint. If the breakpoint create goes | |
4837 | through then that memory is not cleaned up. */ | |
4838 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4839 | ||
4840 | /* Mark the contents of the addr_string for cleanup. These go on | |
4841 | the breakpoint_chain and only occure if the breakpoint create | |
4842 | fails. */ | |
c906108c SS |
4843 | for (i = 0; i < sals.nelts; i++) |
4844 | { | |
c3f6f71d | 4845 | if (addr_string[i] != NULL) |
b8c9b27d | 4846 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
4847 | } |
4848 | ||
c3f6f71d JM |
4849 | /* Wait until now before checking for garbage at the end of the |
4850 | address. That way cleanups can take care of freeing any | |
4851 | memory. */ | |
4852 | if (*address_end != '\0') | |
4853 | error ("Garbage %s following breakpoint address", address_end); | |
4854 | ||
4855 | /* Resolve all line numbers to PC's. */ | |
4856 | breakpoint_sals_to_pc (&sals, args->address); | |
4857 | ||
4858 | /* Verify that conditions can be parsed, before setting any | |
4859 | breakpoints. */ | |
4860 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 4861 | { |
c3f6f71d JM |
4862 | if (args->condition != NULL) |
4863 | { | |
4864 | char *tok = args->condition; | |
4865 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
4866 | if (*tok != '\0') | |
4867 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 4868 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
4869 | cond_string[i] = xstrdup (args->condition); |
4870 | } | |
c906108c | 4871 | } |
c3f6f71d JM |
4872 | |
4873 | create_breakpoints (sals, addr_string, cond, cond_string, | |
4874 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4875 | args->tempflag ? del : donttouch, | |
4876 | args->thread, args->ignore_count, 0/*from-tty*/); | |
4877 | ||
4878 | /* That's it. Discard the cleanups for data inserted into the | |
4879 | breakpoint. */ | |
4880 | discard_cleanups (breakpoint_chain); | |
4881 | /* But cleanup everything else. */ | |
c906108c | 4882 | do_cleanups (old_chain); |
c3f6f71d | 4883 | return GDB_RC_OK; |
c906108c SS |
4884 | } |
4885 | ||
c3f6f71d JM |
4886 | enum gdb_rc |
4887 | gdb_breakpoint (char *address, char *condition, | |
4888 | int hardwareflag, int tempflag, | |
4889 | int thread, int ignore_count) | |
4890 | { | |
4891 | struct captured_breakpoint_args args; | |
4892 | args.address = address; | |
4893 | args.condition = condition; | |
4894 | args.hardwareflag = hardwareflag; | |
4895 | args.tempflag = tempflag; | |
4896 | args.thread = thread; | |
4897 | args.ignore_count = ignore_count; | |
4898 | return catch_errors (do_captured_breakpoint, &args, | |
4899 | NULL, RETURN_MASK_ALL); | |
4900 | } | |
4901 | ||
4902 | ||
c906108c | 4903 | static void |
fba45db2 | 4904 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
4905 | { |
4906 | struct frame_info *frame; | |
4907 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
4908 | char *extra_args = NULL; |
4909 | char *level_arg; | |
4910 | char *addr_string; | |
c906108c SS |
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 | 4969 | break_command_1 (addr_string, flag, from_tty); |
b8c9b27d | 4970 | xfree (addr_string); |
c906108c SS |
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; | |
7f7e9482 | 4988 | char *extra_args = NULL; |
c906108c SS |
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 | 5038 | |
b8c9b27d KB |
5039 | xfree (beg_addr_string); |
5040 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
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); |
b8c9b27d | 5052 | xfree (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) \ | |
6ab3a9c9 | 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]; |
b8c9b27d | 5570 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 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 | |
831662b3 | 5664 | map_catch_names (char *args, int (*function) ()) |
c906108c SS |
5665 | { |
5666 | register char *p = args; | |
5667 | register char *p1; | |
5668 | struct symtabs_and_lines sals; | |
5669 | #if 0 | |
5670 | struct sal_chain *sal_chain = 0; | |
5671 | #endif | |
5672 | ||
5673 | if (p == 0) | |
5674 | error_no_arg ("one or more catch names"); | |
5675 | ||
5676 | sals.nelts = 0; | |
5677 | sals.sals = NULL; | |
5678 | ||
5679 | while (*p) | |
5680 | { | |
5681 | p1 = p; | |
5682 | /* Don't swallow conditional part. */ | |
5683 | if (p1[0] == 'i' && p1[1] == 'f' | |
5684 | && (p1[2] == ' ' || p1[2] == '\t')) | |
5685 | break; | |
5686 | ||
5687 | if (isalpha (*p1)) | |
5688 | { | |
5689 | p1++; | |
5690 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
5691 | p1++; | |
5692 | } | |
5693 | ||
5694 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
5695 | error ("Arguments must be catch names."); | |
5696 | ||
5697 | *p1 = 0; | |
5698 | #if 0 | |
5699 | if (function (p)) | |
5700 | { | |
5701 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5702 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
5703 | next->next = sal_chain; |
5704 | next->sal = get_catch_sal (p); | |
5705 | sal_chain = next; | |
5706 | goto win; | |
5707 | } | |
5708 | #endif | |
5709 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
5710 | #if 0 | |
5711 | win: | |
5712 | #endif | |
5713 | p = p1; | |
c5aa993b JM |
5714 | while (*p == ' ' || *p == '\t') |
5715 | p++; | |
c906108c SS |
5716 | } |
5717 | } | |
7a292a7a | 5718 | #endif |
c906108c SS |
5719 | |
5720 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
5721 | ||
5722 | static struct symtabs_and_lines | |
fba45db2 | 5723 | get_catch_sals (int this_level_only) |
c906108c SS |
5724 | { |
5725 | register struct blockvector *bl; | |
5726 | register struct block *block; | |
5727 | int index, have_default = 0; | |
5728 | CORE_ADDR pc; | |
5729 | struct symtabs_and_lines sals; | |
5730 | struct sal_chain *sal_chain = 0; | |
5731 | char *blocks_searched; | |
5732 | ||
5733 | /* Not sure whether an error message is always the correct response, | |
5734 | but it's better than a core dump. */ | |
5735 | if (selected_frame == NULL) | |
5736 | error ("No selected frame."); | |
5737 | block = get_frame_block (selected_frame); | |
5738 | pc = selected_frame->pc; | |
5739 | ||
5740 | sals.nelts = 0; | |
5741 | sals.sals = NULL; | |
5742 | ||
5743 | if (block == 0) | |
5744 | error ("No symbol table info available.\n"); | |
5745 | ||
5746 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
5747 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5748 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5749 | ||
5750 | while (block != 0) | |
5751 | { | |
5752 | CORE_ADDR end = BLOCK_END (block) - 4; | |
5753 | int last_index; | |
5754 | ||
5755 | if (bl != blockvector_for_pc (end, &index)) | |
5756 | error ("blockvector blotch"); | |
5757 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
5758 | error ("blockvector botch"); | |
5759 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
5760 | index += 1; | |
5761 | ||
5762 | /* Don't print out blocks that have gone by. */ | |
5763 | while (index < last_index | |
5764 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
5765 | index++; | |
5766 | ||
5767 | while (index < last_index | |
5768 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
5769 | { | |
5770 | if (blocks_searched[index] == 0) | |
5771 | { | |
5772 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
5773 | int nsyms; | |
5774 | register int i; | |
5775 | register struct symbol *sym; | |
5776 | ||
5777 | nsyms = BLOCK_NSYMS (b); | |
5778 | ||
5779 | for (i = 0; i < nsyms; i++) | |
5780 | { | |
5781 | sym = BLOCK_SYM (b, i); | |
5782 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
5783 | { | |
5784 | if (have_default) | |
5785 | continue; | |
5786 | have_default = 1; | |
5787 | } | |
5788 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
5789 | { | |
5790 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5791 | alloca (sizeof (struct sal_chain)); |
c906108c | 5792 | next->next = sal_chain; |
53a5351d JM |
5793 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
5794 | 0); | |
c906108c SS |
5795 | sal_chain = next; |
5796 | } | |
5797 | } | |
5798 | blocks_searched[index] = 1; | |
5799 | } | |
5800 | index++; | |
5801 | } | |
5802 | if (have_default) | |
5803 | break; | |
5804 | if (sal_chain && this_level_only) | |
5805 | break; | |
5806 | ||
5807 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
5808 | Don't continue to its superblock, the block of |
5809 | per-file symbols. */ | |
c906108c SS |
5810 | if (BLOCK_FUNCTION (block)) |
5811 | break; | |
5812 | block = BLOCK_SUPERBLOCK (block); | |
5813 | } | |
5814 | ||
5815 | if (sal_chain) | |
5816 | { | |
5817 | struct sal_chain *tmp_chain; | |
5818 | ||
5819 | /* Count the number of entries. */ | |
5820 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
5821 | tmp_chain = tmp_chain->next) | |
5822 | index++; | |
5823 | ||
5824 | sals.nelts = index; | |
5825 | sals.sals = (struct symtab_and_line *) | |
5826 | xmalloc (index * sizeof (struct symtab_and_line)); | |
5827 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
5828 | sals.sals[index] = sal_chain->sal; | |
5829 | } | |
5830 | ||
5831 | return sals; | |
5832 | } | |
5833 | ||
5834 | static void | |
fba45db2 | 5835 | ep_skip_leading_whitespace (char **s) |
c906108c | 5836 | { |
c5aa993b JM |
5837 | if ((s == NULL) || (*s == NULL)) |
5838 | return; | |
5839 | while (isspace (**s)) | |
5840 | *s += 1; | |
c906108c | 5841 | } |
c5aa993b | 5842 | |
c906108c SS |
5843 | /* This function examines a string, and attempts to find a token |
5844 | that might be an event name in the leading characters. If a | |
5845 | possible match is found, a pointer to the last character of | |
5846 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5847 | |
c906108c | 5848 | static char * |
fba45db2 | 5849 | ep_find_event_name_end (char *arg) |
c906108c | 5850 | { |
c5aa993b JM |
5851 | char *s = arg; |
5852 | char *event_name_end = NULL; | |
5853 | ||
c906108c SS |
5854 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5855 | if (arg == NULL) | |
5856 | return NULL; | |
c5aa993b | 5857 | |
c906108c | 5858 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5859 | Basically, we're looking for alphanumerics and underscores; |
5860 | anything else delimites the token. */ | |
c906108c SS |
5861 | while (*s != '\0') |
5862 | { | |
c5aa993b JM |
5863 | if (!isalnum (*s) && (*s != '_')) |
5864 | break; | |
c906108c SS |
5865 | event_name_end = s; |
5866 | s++; | |
5867 | } | |
c5aa993b | 5868 | |
c906108c SS |
5869 | return event_name_end; |
5870 | } | |
5871 | ||
c5aa993b | 5872 | |
c906108c SS |
5873 | /* This function attempts to parse an optional "if <cond>" clause |
5874 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5875 | |
c906108c SS |
5876 | Else, it returns a pointer to the condition string. (It does not |
5877 | attempt to evaluate the string against a particular block.) And, | |
5878 | it updates arg to point to the first character following the parsed | |
5879 | if clause in the arg string. */ | |
53a5351d | 5880 | |
c906108c | 5881 | static char * |
fba45db2 | 5882 | ep_parse_optional_if_clause (char **arg) |
c906108c | 5883 | { |
c5aa993b JM |
5884 | char *cond_string; |
5885 | ||
5886 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5887 | return NULL; |
c5aa993b | 5888 | |
c906108c SS |
5889 | /* Skip the "if" keyword. */ |
5890 | (*arg) += 2; | |
c5aa993b | 5891 | |
c906108c SS |
5892 | /* Skip any extra leading whitespace, and record the start of the |
5893 | condition string. */ | |
5894 | ep_skip_leading_whitespace (arg); | |
5895 | cond_string = *arg; | |
c5aa993b | 5896 | |
c906108c SS |
5897 | /* Assume that the condition occupies the remainder of the arg string. */ |
5898 | (*arg) += strlen (cond_string); | |
c5aa993b | 5899 | |
c906108c SS |
5900 | return cond_string; |
5901 | } | |
c5aa993b | 5902 | |
c906108c SS |
5903 | /* This function attempts to parse an optional filename from the arg |
5904 | string. If one is not found, it returns NULL. | |
c5aa993b | 5905 | |
c906108c SS |
5906 | Else, it returns a pointer to the parsed filename. (This function |
5907 | makes no attempt to verify that a file of that name exists, or is | |
5908 | accessible.) And, it updates arg to point to the first character | |
5909 | following the parsed filename in the arg string. | |
c5aa993b | 5910 | |
c906108c SS |
5911 | Note that clients needing to preserve the returned filename for |
5912 | future access should copy it to their own buffers. */ | |
5913 | static char * | |
fba45db2 | 5914 | ep_parse_optional_filename (char **arg) |
c906108c | 5915 | { |
c5aa993b JM |
5916 | static char filename[1024]; |
5917 | char *arg_p = *arg; | |
5918 | int i; | |
5919 | char c; | |
5920 | ||
c906108c SS |
5921 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5922 | return NULL; | |
c5aa993b JM |
5923 | |
5924 | for (i = 0;; i++) | |
c906108c SS |
5925 | { |
5926 | c = *arg_p; | |
5927 | if (isspace (c)) | |
c5aa993b | 5928 | c = '\0'; |
c906108c SS |
5929 | filename[i] = c; |
5930 | if (c == '\0') | |
c5aa993b | 5931 | break; |
c906108c SS |
5932 | arg_p++; |
5933 | } | |
5934 | *arg = arg_p; | |
c5aa993b | 5935 | |
c906108c SS |
5936 | return filename; |
5937 | } | |
c5aa993b | 5938 | |
c906108c SS |
5939 | /* Commands to deal with catching events, such as signals, exceptions, |
5940 | process start/exit, etc. */ | |
c5aa993b JM |
5941 | |
5942 | typedef enum | |
5943 | { | |
5944 | catch_fork, catch_vfork | |
5945 | } | |
5946 | catch_fork_kind; | |
5947 | ||
e514a9d6 | 5948 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
a14ed312 KB |
5949 | static void catch_fork_command_1 (catch_fork_kind fork_kind, |
5950 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 5951 | |
c906108c | 5952 | static void |
fba45db2 KB |
5953 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
5954 | int from_tty) | |
c906108c | 5955 | { |
c5aa993b JM |
5956 | char *cond_string = NULL; |
5957 | ||
c906108c | 5958 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5959 | |
c906108c | 5960 | /* The allowed syntax is: |
c5aa993b JM |
5961 | catch [v]fork |
5962 | catch [v]fork if <cond> | |
5963 | ||
c906108c SS |
5964 | First, check if there's an if clause. */ |
5965 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 5966 | |
c906108c SS |
5967 | if ((*arg != '\0') && !isspace (*arg)) |
5968 | error ("Junk at end of arguments."); | |
c5aa993b | 5969 | |
c906108c SS |
5970 | /* If this target supports it, create a fork or vfork catchpoint |
5971 | and enable reporting of such events. */ | |
c5aa993b JM |
5972 | switch (fork_kind) |
5973 | { | |
5974 | case catch_fork: | |
c906108c SS |
5975 | create_fork_event_catchpoint (tempflag, cond_string); |
5976 | break; | |
c5aa993b | 5977 | case catch_vfork: |
c906108c SS |
5978 | create_vfork_event_catchpoint (tempflag, cond_string); |
5979 | break; | |
c5aa993b | 5980 | default: |
c906108c SS |
5981 | error ("unsupported or unknown fork kind; cannot catch it"); |
5982 | break; | |
c5aa993b | 5983 | } |
c906108c | 5984 | } |
e514a9d6 | 5985 | #endif |
c906108c | 5986 | |
e514a9d6 | 5987 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c | 5988 | static void |
fba45db2 | 5989 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 5990 | { |
c5aa993b | 5991 | char *cond_string = NULL; |
c906108c SS |
5992 | |
5993 | ep_skip_leading_whitespace (&arg); | |
5994 | ||
5995 | /* The allowed syntax is: | |
c5aa993b JM |
5996 | catch exec |
5997 | catch exec if <cond> | |
c906108c SS |
5998 | |
5999 | First, check if there's an if clause. */ | |
6000 | cond_string = ep_parse_optional_if_clause (&arg); | |
6001 | ||
6002 | if ((*arg != '\0') && !isspace (*arg)) | |
6003 | error ("Junk at end of arguments."); | |
6004 | ||
6005 | /* If this target supports it, create an exec catchpoint | |
6006 | and enable reporting of such events. */ | |
6007 | create_exec_event_catchpoint (tempflag, cond_string); | |
6008 | } | |
e514a9d6 | 6009 | #endif |
c5aa993b | 6010 | |
c906108c SS |
6011 | #if defined(SOLIB_ADD) |
6012 | static void | |
fba45db2 | 6013 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6014 | { |
c5aa993b JM |
6015 | char *dll_pathname = NULL; |
6016 | char *cond_string = NULL; | |
6017 | ||
c906108c | 6018 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6019 | |
c906108c | 6020 | /* The allowed syntax is: |
c5aa993b JM |
6021 | catch load |
6022 | catch load if <cond> | |
6023 | catch load <filename> | |
6024 | catch load <filename> if <cond> | |
6025 | ||
c906108c SS |
6026 | The user is not allowed to specify the <filename> after an |
6027 | if clause. | |
c5aa993b | 6028 | |
c906108c | 6029 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6030 | |
c906108c SS |
6031 | First, check if there's an if clause. If so, then there |
6032 | cannot be a filename. */ | |
6033 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6034 | |
c906108c SS |
6035 | /* If there was an if clause, then there cannot be a filename. |
6036 | Else, there might be a filename and an if clause. */ | |
6037 | if (cond_string == NULL) | |
6038 | { | |
6039 | dll_pathname = ep_parse_optional_filename (&arg); | |
6040 | ep_skip_leading_whitespace (&arg); | |
6041 | cond_string = ep_parse_optional_if_clause (&arg); | |
6042 | } | |
c5aa993b | 6043 | |
c906108c SS |
6044 | if ((*arg != '\0') && !isspace (*arg)) |
6045 | error ("Junk at end of arguments."); | |
c5aa993b | 6046 | |
c906108c SS |
6047 | /* Create a load breakpoint that only triggers when a load of |
6048 | the specified dll (or any dll, if no pathname was specified) | |
6049 | occurs. */ | |
53a5351d JM |
6050 | SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, |
6051 | dll_pathname, cond_string); | |
c906108c | 6052 | } |
c5aa993b | 6053 | |
c906108c | 6054 | static void |
fba45db2 | 6055 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6056 | { |
c5aa993b JM |
6057 | char *dll_pathname = NULL; |
6058 | char *cond_string = NULL; | |
6059 | ||
c906108c | 6060 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6061 | |
c906108c | 6062 | /* The allowed syntax is: |
c5aa993b JM |
6063 | catch unload |
6064 | catch unload if <cond> | |
6065 | catch unload <filename> | |
6066 | catch unload <filename> if <cond> | |
6067 | ||
c906108c SS |
6068 | The user is not allowed to specify the <filename> after an |
6069 | if clause. | |
c5aa993b | 6070 | |
c906108c | 6071 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6072 | |
c906108c SS |
6073 | First, check if there's an if clause. If so, then there |
6074 | cannot be a filename. */ | |
6075 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6076 | |
c906108c SS |
6077 | /* If there was an if clause, then there cannot be a filename. |
6078 | Else, there might be a filename and an if clause. */ | |
6079 | if (cond_string == NULL) | |
6080 | { | |
6081 | dll_pathname = ep_parse_optional_filename (&arg); | |
6082 | ep_skip_leading_whitespace (&arg); | |
6083 | cond_string = ep_parse_optional_if_clause (&arg); | |
6084 | } | |
c5aa993b | 6085 | |
c906108c SS |
6086 | if ((*arg != '\0') && !isspace (*arg)) |
6087 | error ("Junk at end of arguments."); | |
c5aa993b | 6088 | |
c906108c SS |
6089 | /* Create an unload breakpoint that only triggers when an unload of |
6090 | the specified dll (or any dll, if no pathname was specified) | |
6091 | occurs. */ | |
53a5351d JM |
6092 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, |
6093 | dll_pathname, cond_string); | |
c906108c SS |
6094 | } |
6095 | #endif /* SOLIB_ADD */ | |
6096 | ||
6097 | /* Commands to deal with catching exceptions. */ | |
6098 | ||
6099 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6100 | exception event callback */ |
c906108c SS |
6101 | |
6102 | static void | |
fba45db2 KB |
6103 | create_exception_catchpoint (int tempflag, char *cond_string, |
6104 | enum exception_event_kind ex_event, | |
6105 | struct symtab_and_line *sal) | |
c906108c | 6106 | { |
c5aa993b | 6107 | struct breakpoint *b; |
c5aa993b | 6108 | int thread = -1; /* All threads. */ |
c906108c | 6109 | |
c5aa993b | 6110 | if (!sal) /* no exception support? */ |
c906108c SS |
6111 | return; |
6112 | ||
6113 | b = set_raw_breakpoint (*sal); | |
6114 | set_breakpoint_count (breakpoint_count + 1); | |
6115 | b->number = breakpoint_count; | |
6116 | b->cond = NULL; | |
53a5351d JM |
6117 | b->cond_string = (cond_string == NULL) ? |
6118 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
6119 | b->thread = thread; |
6120 | b->addr_string = NULL; | |
6121 | b->enable = enabled; | |
6122 | b->disposition = tempflag ? del : donttouch; | |
6123 | switch (ex_event) | |
6124 | { | |
c5aa993b JM |
6125 | case EX_EVENT_THROW: |
6126 | b->type = bp_catch_throw; | |
6127 | break; | |
6128 | case EX_EVENT_CATCH: | |
6129 | b->type = bp_catch_catch; | |
6130 | break; | |
6131 | default: /* error condition */ | |
6132 | b->type = bp_none; | |
6133 | b->enable = disabled; | |
6134 | error ("Internal error -- invalid catchpoint kind"); | |
c906108c SS |
6135 | } |
6136 | mention (b); | |
6137 | } | |
6138 | ||
c5aa993b | 6139 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6140 | |
6141 | static void | |
fba45db2 KB |
6142 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6143 | int tempflag, int from_tty) | |
c906108c | 6144 | { |
c5aa993b JM |
6145 | char *cond_string = NULL; |
6146 | struct symtab_and_line *sal = NULL; | |
6147 | ||
c906108c | 6148 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6149 | |
c906108c SS |
6150 | cond_string = ep_parse_optional_if_clause (&arg); |
6151 | ||
6152 | if ((*arg != '\0') && !isspace (*arg)) | |
6153 | error ("Junk at end of arguments."); | |
6154 | ||
6155 | if ((ex_event != EX_EVENT_THROW) && | |
6156 | (ex_event != EX_EVENT_CATCH)) | |
6157 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6158 | ||
6159 | /* See if we can find a callback routine */ | |
6160 | sal = target_enable_exception_callback (ex_event, 1); | |
6161 | ||
c5aa993b | 6162 | if (sal) |
c906108c SS |
6163 | { |
6164 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6165 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6166 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6167 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6168 | else |
53a5351d | 6169 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6170 | } |
c5aa993b | 6171 | else |
c906108c SS |
6172 | { |
6173 | /* No callbacks from runtime system for exceptions. | |
6174 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
6175 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
6176 | { |
6177 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
6178 | } | |
c906108c | 6179 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
6180 | { |
6181 | /* Set a breakpoint on __raise_exception () */ | |
6182 | ||
53a5351d JM |
6183 | warning ("Unsupported with this platform/compiler combination."); |
6184 | warning ("Perhaps you can achieve the effect you want by setting"); | |
6185 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 6186 | } |
c906108c SS |
6187 | } |
6188 | } | |
6189 | ||
6190 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6191 | inside a catch_errors */ | |
6192 | ||
6193 | static int | |
fba45db2 | 6194 | cover_target_enable_exception_callback (PTR arg) |
c906108c SS |
6195 | { |
6196 | args_for_catchpoint_enable *args = arg; | |
6197 | struct symtab_and_line *sal; | |
6198 | sal = target_enable_exception_callback (args->kind, args->enable); | |
6199 | if (sal == NULL) | |
6200 | return 0; | |
6201 | else if (sal == (struct symtab_and_line *) -1) | |
6202 | return -1; | |
6203 | else | |
c5aa993b | 6204 | return 1; /*is valid */ |
c906108c SS |
6205 | } |
6206 | ||
6207 | ||
6208 | ||
6209 | /* This is the original v.4.16 and earlier version of the | |
6210 | catch_command_1() function. Now that other flavours of "catch" | |
6211 | have been introduced, and since exception handling can be handled | |
6212 | in other ways (through target ops) also, this is used only for the | |
6213 | GNU C++ exception handling system. | |
6214 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
6215 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
6216 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 6217 | |
c906108c SS |
6218 | Called from catch_exception_command_1 () */ |
6219 | ||
6220 | ||
6221 | static void | |
fba45db2 | 6222 | handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty) |
c906108c SS |
6223 | { |
6224 | /* First, translate ARG into something we can deal with in terms | |
6225 | of breakpoints. */ | |
6226 | ||
6227 | struct symtabs_and_lines sals; | |
6228 | struct symtab_and_line sal; | |
6229 | register struct expression *cond = 0; | |
6230 | register struct breakpoint *b; | |
6231 | char *save_arg; | |
6232 | int i; | |
6233 | ||
c5aa993b | 6234 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6235 | |
6236 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
6237 | are breakpointed. */ | |
6238 | ||
c5aa993b | 6239 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
6240 | && (arg[2] == ' ' || arg[2] == '\t'))) |
6241 | { | |
6242 | /* Grab all active catch clauses. */ | |
6243 | sals = get_catch_sals (0); | |
6244 | } | |
6245 | else | |
6246 | { | |
6247 | /* Grab selected catch clauses. */ | |
6248 | error ("catch NAME not implemented"); | |
6249 | ||
6250 | #if 0 | |
6251 | /* Not sure why this code has been disabled. I'm leaving | |
6252 | it disabled. We can never come here now anyway | |
6253 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 6254 | pai/1997-07-11 */ |
c906108c SS |
6255 | |
6256 | /* This isn't used; I don't know what it was for. */ | |
6257 | sals = map_catch_names (arg, catch_breakpoint); | |
6258 | #endif | |
6259 | } | |
6260 | ||
c5aa993b | 6261 | if (!sals.nelts) |
c906108c SS |
6262 | return; |
6263 | ||
6264 | save_arg = arg; | |
6265 | for (i = 0; i < sals.nelts; i++) | |
6266 | { | |
6267 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 6268 | |
c906108c SS |
6269 | while (arg && *arg) |
6270 | { | |
6271 | if (arg[0] == 'i' && arg[1] == 'f' | |
6272 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 6273 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
6274 | block_for_pc (sals.sals[i].pc), 0); |
6275 | else | |
6276 | error ("Junk at end of arguments."); | |
6277 | } | |
6278 | arg = save_arg; | |
6279 | } | |
6280 | ||
6281 | for (i = 0; i < sals.nelts; i++) | |
6282 | { | |
6283 | sal = sals.sals[i]; | |
6284 | ||
6285 | if (from_tty) | |
6286 | describe_other_breakpoints (sal.pc, sal.section); | |
6287 | ||
6288 | b = set_raw_breakpoint (sal); | |
6289 | set_breakpoint_count (breakpoint_count + 1); | |
6290 | b->number = breakpoint_count; | |
53a5351d JM |
6291 | |
6292 | /* Important -- this is an ordinary breakpoint. For platforms | |
6293 | with callback support for exceptions, | |
6294 | create_exception_catchpoint() will create special bp types | |
6295 | (bp_catch_catch and bp_catch_throw), and there is code in | |
6296 | insert_breakpoints() and elsewhere that depends on that. */ | |
6297 | b->type = bp_breakpoint; | |
c906108c SS |
6298 | |
6299 | b->cond = cond; | |
6300 | b->enable = enabled; | |
6301 | b->disposition = tempflag ? del : donttouch; | |
6302 | ||
6303 | mention (b); | |
6304 | } | |
6305 | ||
6306 | if (sals.nelts > 1) | |
6307 | { | |
53a5351d JM |
6308 | warning ("Multiple breakpoints were set."); |
6309 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 6310 | } |
b8c9b27d | 6311 | xfree (sals.sals); |
c906108c SS |
6312 | } |
6313 | ||
6314 | #if 0 | |
6315 | /* This creates a temporary internal breakpoint | |
6316 | just to placate infrun */ | |
6317 | static struct breakpoint * | |
fba45db2 | 6318 | create_temp_exception_breakpoint (CORE_ADDR pc) |
c906108c SS |
6319 | { |
6320 | struct symtab_and_line sal; | |
6321 | struct breakpoint *b; | |
6322 | ||
c5aa993b | 6323 | INIT_SAL (&sal); |
c906108c SS |
6324 | sal.pc = pc; |
6325 | sal.symtab = NULL; | |
6326 | sal.line = 0; | |
6327 | ||
6328 | b = set_raw_breakpoint (sal); | |
6329 | if (!b) | |
6330 | error ("Internal error -- couldn't set temp exception breakpoint"); | |
6331 | ||
6332 | b->type = bp_breakpoint; | |
6333 | b->disposition = del; | |
6334 | b->enable = enabled; | |
6335 | b->silent = 1; | |
6336 | b->number = internal_breakpoint_number--; | |
6337 | return b; | |
6338 | } | |
6339 | #endif | |
6340 | ||
6341 | static void | |
fba45db2 | 6342 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6343 | { |
c5aa993b | 6344 | |
c906108c SS |
6345 | /* The first argument may be an event name, such as "start" or "load". |
6346 | If so, then handle it as such. If it doesn't match an event name, | |
6347 | then attempt to interpret it as an exception name. (This latter is | |
6348 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6349 | |
c906108c | 6350 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6351 | char *arg1_start = arg; |
6352 | char *arg1_end; | |
6353 | int arg1_length; | |
6354 | ||
c906108c SS |
6355 | if (arg1_start == NULL) |
6356 | { | |
c5aa993b | 6357 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6358 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6359 | /* return; */ | |
c5aa993b | 6360 | /* Now, this is not allowed */ |
c906108c SS |
6361 | error ("Catch requires an event name."); |
6362 | ||
6363 | } | |
6364 | arg1_end = ep_find_event_name_end (arg1_start); | |
6365 | if (arg1_end == NULL) | |
6366 | error ("catch requires an event"); | |
6367 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6368 | |
c906108c SS |
6369 | /* Try to match what we found against known event names. */ |
6370 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6371 | { | |
6372 | error ("Catch of signal not yet implemented"); | |
6373 | } | |
6374 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6375 | { | |
53a5351d JM |
6376 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6377 | tempflag, from_tty); | |
c906108c SS |
6378 | } |
6379 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6380 | { | |
53a5351d JM |
6381 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6382 | tempflag, from_tty); | |
c906108c SS |
6383 | } |
6384 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6385 | { | |
6386 | error ("Catch of thread_start not yet implemented"); | |
6387 | } | |
6388 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6389 | { | |
6390 | error ("Catch of thread_exit not yet implemented"); | |
6391 | } | |
6392 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6393 | { | |
6394 | error ("Catch of thread_join not yet implemented"); | |
6395 | } | |
6396 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6397 | { | |
6398 | error ("Catch of start not yet implemented"); | |
6399 | } | |
6400 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6401 | { | |
6402 | error ("Catch of exit not yet implemented"); | |
6403 | } | |
6404 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6405 | { | |
6406 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 6407 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6408 | #else |
6409 | error ("Catch of fork not yet implemented"); | |
6410 | #endif | |
6411 | } | |
6412 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6413 | { | |
6414 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 6415 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6416 | #else |
6417 | error ("Catch of vfork not yet implemented"); | |
6418 | #endif | |
6419 | } | |
6420 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6421 | { | |
6422 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 6423 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6424 | #else |
6425 | error ("Catch of exec not yet implemented"); | |
6426 | #endif | |
6427 | } | |
6428 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6429 | { | |
6430 | #if defined(SOLIB_ADD) | |
c5aa993b | 6431 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6432 | #else |
6433 | error ("Catch of load not implemented"); | |
6434 | #endif | |
6435 | } | |
6436 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6437 | { | |
6438 | #if defined(SOLIB_ADD) | |
c5aa993b | 6439 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6440 | #else |
6441 | error ("Catch of load not implemented"); | |
6442 | #endif | |
6443 | } | |
6444 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6445 | { | |
6446 | error ("Catch of stop not yet implemented"); | |
6447 | } | |
c5aa993b | 6448 | |
c906108c SS |
6449 | /* This doesn't appear to be an event name */ |
6450 | ||
6451 | else | |
6452 | { | |
6453 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6454 | as the name of an exception */ |
c906108c | 6455 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6456 | /* Now this is not allowed */ |
c906108c SS |
6457 | error ("Unknown event kind specified for catch"); |
6458 | ||
6459 | } | |
6460 | } | |
6461 | ||
6462 | /* Used by the gui, could be made a worker for other things. */ | |
6463 | ||
6464 | struct breakpoint * | |
fba45db2 | 6465 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6466 | { |
6467 | struct breakpoint *b; | |
6468 | b = set_raw_breakpoint (sal); | |
6469 | set_breakpoint_count (breakpoint_count + 1); | |
6470 | b->number = breakpoint_count; | |
6471 | b->type = bp_breakpoint; | |
6472 | b->cond = 0; | |
6473 | b->thread = -1; | |
6474 | return b; | |
6475 | } | |
6476 | ||
6477 | #if 0 | |
6478 | /* These aren't used; I don't know what they were for. */ | |
6479 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
6480 | static void | |
fba45db2 | 6481 | disable_catch (char *args) |
c906108c SS |
6482 | { |
6483 | /* Map the disable command to catch clauses described in ARGS. */ | |
6484 | } | |
6485 | ||
6486 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
6487 | static void | |
fba45db2 | 6488 | enable_catch (char *args) |
c906108c SS |
6489 | { |
6490 | /* Map the disable command to catch clauses described in ARGS. */ | |
6491 | } | |
6492 | ||
6493 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
6494 | static void | |
fba45db2 | 6495 | delete_catch (char *args) |
c906108c SS |
6496 | { |
6497 | /* Map the delete command to catch clauses described in ARGS. */ | |
6498 | } | |
6499 | #endif /* 0 */ | |
6500 | ||
6501 | static void | |
fba45db2 | 6502 | catch_command (char *arg, int from_tty) |
c906108c SS |
6503 | { |
6504 | catch_command_1 (arg, 0, from_tty); | |
6505 | } | |
6506 | \f | |
6507 | ||
6508 | static void | |
fba45db2 | 6509 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6510 | { |
6511 | catch_command_1 (arg, 1, from_tty); | |
6512 | } | |
6513 | ||
6514 | ||
6515 | static void | |
fba45db2 | 6516 | clear_command (char *arg, int from_tty) |
c906108c SS |
6517 | { |
6518 | register struct breakpoint *b, *b1; | |
6519 | int default_match; | |
6520 | struct symtabs_and_lines sals; | |
6521 | struct symtab_and_line sal; | |
6522 | register struct breakpoint *found; | |
6523 | int i; | |
6524 | ||
6525 | if (arg) | |
6526 | { | |
6527 | sals = decode_line_spec (arg, 1); | |
6528 | default_match = 0; | |
6529 | } | |
6530 | else | |
6531 | { | |
c5aa993b | 6532 | sals.sals = (struct symtab_and_line *) |
c906108c | 6533 | xmalloc (sizeof (struct symtab_and_line)); |
c5aa993b | 6534 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6535 | sal.line = default_breakpoint_line; |
6536 | sal.symtab = default_breakpoint_symtab; | |
6537 | sal.pc = default_breakpoint_address; | |
6538 | if (sal.symtab == 0) | |
6539 | error ("No source file specified."); | |
6540 | ||
6541 | sals.sals[0] = sal; | |
6542 | sals.nelts = 1; | |
6543 | ||
6544 | default_match = 1; | |
6545 | } | |
6546 | ||
6547 | /* For each line spec given, delete bps which correspond | |
6548 | to it. We do this in two loops: the first loop looks at | |
6549 | the initial bp(s) in the chain which should be deleted, | |
6550 | the second goes down the rest of the chain looking ahead | |
6551 | one so it can take those bps off the chain without messing | |
6552 | up the chain. */ | |
6553 | ||
6554 | ||
6555 | for (i = 0; i < sals.nelts; i++) | |
6556 | { | |
6557 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6558 | If line given (pc == 0), clear all bpts on specified line. |
6559 | If defaulting, clear all bpts on default line | |
c906108c | 6560 | or at default pc. |
c5aa993b JM |
6561 | |
6562 | defaulting sal.pc != 0 tests to do | |
6563 | ||
6564 | 0 1 pc | |
6565 | 1 1 pc _and_ line | |
6566 | 0 0 line | |
6567 | 1 0 <can't happen> */ | |
c906108c SS |
6568 | |
6569 | sal = sals.sals[i]; | |
6570 | found = (struct breakpoint *) 0; | |
6571 | ||
6572 | ||
6573 | while (breakpoint_chain | |
c5aa993b JM |
6574 | /* Why don't we check here that this is not |
6575 | a watchpoint, etc., as we do below? | |
6576 | I can't make it fail, but don't know | |
6577 | what's stopping the failure: a watchpoint | |
6578 | of the same address as "sal.pc" should | |
6579 | wind up being deleted. */ | |
6580 | ||
6581 | && (((sal.pc && (breakpoint_chain->address == sal.pc)) && | |
6582 | (overlay_debugging == 0 || | |
6583 | breakpoint_chain->section == sal.section)) | |
6584 | || ((default_match || (0 == sal.pc)) | |
6585 | && breakpoint_chain->source_file != NULL | |
6586 | && sal.symtab != NULL | |
6587 | && STREQ (breakpoint_chain->source_file, sal.symtab->filename) | |
6588 | && breakpoint_chain->line_number == sal.line))) | |
c906108c SS |
6589 | |
6590 | { | |
6591 | b1 = breakpoint_chain; | |
6592 | breakpoint_chain = b1->next; | |
6593 | b1->next = found; | |
6594 | found = b1; | |
6595 | } | |
6596 | ||
6597 | ALL_BREAKPOINTS (b) | |
6598 | ||
c5aa993b JM |
6599 | while (b->next |
6600 | && b->next->type != bp_none | |
6601 | && b->next->type != bp_watchpoint | |
6602 | && b->next->type != bp_hardware_watchpoint | |
6603 | && b->next->type != bp_read_watchpoint | |
6604 | && b->next->type != bp_access_watchpoint | |
6605 | && (((sal.pc && (b->next->address == sal.pc)) && | |
6606 | (overlay_debugging == 0 || | |
6607 | b->next->section == sal.section)) | |
6608 | || ((default_match || (0 == sal.pc)) | |
6609 | && b->next->source_file != NULL | |
6610 | && sal.symtab != NULL | |
6611 | && STREQ (b->next->source_file, sal.symtab->filename) | |
6612 | && b->next->line_number == sal.line))) | |
c906108c SS |
6613 | |
6614 | ||
c5aa993b JM |
6615 | { |
6616 | b1 = b->next; | |
6617 | b->next = b1->next; | |
6618 | b1->next = found; | |
6619 | found = b1; | |
6620 | } | |
c906108c SS |
6621 | |
6622 | if (found == 0) | |
6623 | { | |
6624 | if (arg) | |
6625 | error ("No breakpoint at %s.", arg); | |
6626 | else | |
6627 | error ("No breakpoint at this line."); | |
6628 | } | |
6629 | ||
c5aa993b JM |
6630 | if (found->next) |
6631 | from_tty = 1; /* Always report if deleted more than one */ | |
6632 | if (from_tty) | |
6633 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
c906108c SS |
6634 | breakpoints_changed (); |
6635 | while (found) | |
6636 | { | |
c5aa993b JM |
6637 | if (from_tty) |
6638 | printf_unfiltered ("%d ", found->number); | |
c906108c SS |
6639 | b1 = found->next; |
6640 | delete_breakpoint (found); | |
6641 | found = b1; | |
6642 | } | |
c5aa993b JM |
6643 | if (from_tty) |
6644 | putchar_unfiltered ('\n'); | |
c906108c | 6645 | } |
b8c9b27d | 6646 | xfree (sals.sals); |
c906108c SS |
6647 | } |
6648 | \f | |
6649 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6650 | all breakpoints that are marked for deletion, whether hit or not. | |
6651 | This is called after any breakpoint is hit, or after errors. */ | |
6652 | ||
6653 | void | |
fba45db2 | 6654 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6655 | { |
6656 | struct breakpoint *b, *temp; | |
6657 | ||
6658 | for (; bs; bs = bs->next) | |
c5aa993b | 6659 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
c906108c SS |
6660 | && bs->stop) |
6661 | delete_breakpoint (bs->breakpoint_at); | |
6662 | ||
6663 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
6664 | { |
6665 | if (b->disposition == del_at_next_stop) | |
6666 | delete_breakpoint (b); | |
6667 | } | |
c906108c SS |
6668 | } |
6669 | ||
53a5351d JM |
6670 | /* Delete a breakpoint and clean up all traces of it in the data |
6671 | structures. */ | |
c906108c SS |
6672 | |
6673 | void | |
fba45db2 | 6674 | delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
6675 | { |
6676 | register struct breakpoint *b; | |
6677 | register bpstat bs; | |
6678 | ||
6679 | if (bpt == NULL) | |
6680 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6681 | ||
6682 | ||
6683 | /* Has this bp already been deleted? This can happen because multiple | |
6684 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6685 | ||
6686 | One example of this happening is a watchpoint's scope bp. When the | |
6687 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6688 | delete it. We also delete its scope bp. But the scope bp is marked | |
6689 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6690 | checked for auto-deleting bp's, which are deleted. | |
6691 | ||
6692 | A real solution to this problem might involve reference counts in bp's, | |
6693 | and/or giving them pointers back to their referencing bpstat's, and | |
6694 | teaching delete_breakpoint to only free a bp's storage when no more | |
6695 | references were extent. A cheaper bandaid was chosen. */ | |
6696 | if (bpt->type == bp_none) | |
6697 | return; | |
6698 | ||
6699 | if (delete_breakpoint_hook) | |
6700 | delete_breakpoint_hook (bpt); | |
104c1213 | 6701 | breakpoint_delete_event (bpt->number); |
c906108c SS |
6702 | |
6703 | if (bpt->inserted) | |
6704 | remove_breakpoint (bpt, mark_uninserted); | |
c5aa993b | 6705 | |
c906108c SS |
6706 | if (breakpoint_chain == bpt) |
6707 | breakpoint_chain = bpt->next; | |
6708 | ||
6709 | /* If we have callback-style exception catchpoints, don't go through | |
6710 | the adjustments to the C++ runtime library etc. if the inferior | |
6711 | isn't actually running. target_enable_exception_callback for a | |
6712 | null target ops vector gives an undesirable error message, so we | |
6713 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6714 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6715 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6716 | { | |
6717 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
6718 | static char message[sizeof (message1) + 30]; | |
6719 | args_for_catchpoint_enable args; | |
6720 | ||
53a5351d JM |
6721 | /* Format possible error msg */ |
6722 | sprintf (message, message1, bpt->number); | |
6723 | args.kind = bpt->type == bp_catch_catch ? | |
6724 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
6725 | args.enable = 0; |
6726 | catch_errors (cover_target_enable_exception_callback, &args, | |
6727 | message, RETURN_MASK_ALL); | |
6728 | } | |
6729 | ||
6730 | ||
6731 | ALL_BREAKPOINTS (b) | |
6732 | if (b->next == bpt) | |
c5aa993b JM |
6733 | { |
6734 | b->next = bpt->next; | |
6735 | break; | |
6736 | } | |
c906108c SS |
6737 | |
6738 | /* Before turning off the visuals for the bp, check to see that | |
6739 | there are no other bps at the same address. */ | |
6740 | if (tui_version) | |
6741 | { | |
6742 | int clearIt; | |
6743 | ||
6744 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
6745 | { |
6746 | clearIt = (b->address != bpt->address); | |
6747 | if (!clearIt) | |
6748 | break; | |
6749 | } | |
c906108c SS |
6750 | |
6751 | if (clearIt) | |
c5aa993b JM |
6752 | { |
6753 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, bpt, 0)); | |
6754 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
6755 | } | |
c906108c SS |
6756 | } |
6757 | ||
6758 | check_duplicates (bpt->address, bpt->section); | |
6759 | /* If this breakpoint was inserted, and there is another breakpoint | |
6760 | at the same address, we need to insert the other breakpoint. */ | |
6761 | if (bpt->inserted | |
6762 | && bpt->type != bp_hardware_watchpoint | |
6763 | && bpt->type != bp_read_watchpoint | |
6764 | && bpt->type != bp_access_watchpoint | |
6765 | && bpt->type != bp_catch_fork | |
6766 | && bpt->type != bp_catch_vfork | |
6767 | && bpt->type != bp_catch_exec) | |
6768 | { | |
6769 | ALL_BREAKPOINTS (b) | |
6770 | if (b->address == bpt->address | |
6771 | && b->section == bpt->section | |
6772 | && !b->duplicate | |
6773 | && b->enable != disabled | |
6774 | && b->enable != shlib_disabled | |
6775 | && b->enable != call_disabled) | |
c5aa993b JM |
6776 | { |
6777 | int val; | |
53a5351d | 6778 | |
c2c6d25f JM |
6779 | /* We should never reach this point if there is a permanent |
6780 | breakpoint at the same address as the one being deleted. | |
6781 | If there is a permanent breakpoint somewhere, it should | |
6782 | always be the only one inserted. */ | |
6783 | if (b->enable == permanent) | |
8e65ff28 AC |
6784 | internal_error (__FILE__, __LINE__, |
6785 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6786 | "a permanent breakpoint"); |
6787 | ||
53a5351d JM |
6788 | if (b->type == bp_hardware_breakpoint) |
6789 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
6790 | else | |
6791 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
6792 | ||
c5aa993b JM |
6793 | if (val != 0) |
6794 | { | |
6795 | target_terminal_ours_for_output (); | |
53a5351d | 6796 | warning ("Cannot insert breakpoint %d:", b->number); |
c5aa993b JM |
6797 | memory_error (val, b->address); /* which bombs us out */ |
6798 | } | |
6799 | else | |
6800 | b->inserted = 1; | |
6801 | } | |
c906108c SS |
6802 | } |
6803 | ||
6804 | free_command_lines (&bpt->commands); | |
6805 | if (bpt->cond) | |
b8c9b27d | 6806 | xfree (bpt->cond); |
c906108c | 6807 | if (bpt->cond_string != NULL) |
b8c9b27d | 6808 | xfree (bpt->cond_string); |
c906108c | 6809 | if (bpt->addr_string != NULL) |
b8c9b27d | 6810 | xfree (bpt->addr_string); |
c906108c | 6811 | if (bpt->exp != NULL) |
b8c9b27d | 6812 | xfree (bpt->exp); |
c906108c | 6813 | if (bpt->exp_string != NULL) |
b8c9b27d | 6814 | xfree (bpt->exp_string); |
c906108c SS |
6815 | if (bpt->val != NULL) |
6816 | value_free (bpt->val); | |
6817 | if (bpt->source_file != NULL) | |
b8c9b27d | 6818 | xfree (bpt->source_file); |
c906108c | 6819 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6820 | xfree (bpt->dll_pathname); |
c906108c | 6821 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6822 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6823 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6824 | xfree (bpt->exec_pathname); |
c906108c SS |
6825 | |
6826 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6827 | /* FIXME, how can we find all bpstat's? | |
6828 | We just check stop_bpstat for now. */ | |
6829 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6830 | if (bs->breakpoint_at == bpt) | |
6831 | { | |
6832 | bs->breakpoint_at = NULL; | |
6833 | ||
6834 | /* we'd call bpstat_clear_actions, but that free's stuff and due | |
6835 | to the multiple pointers pointing to one item with no | |
6836 | reference counts found anywhere through out the bpstat's (how | |
6837 | do you spell fragile?), we don't want to free things twice -- | |
6838 | better a memory leak than a corrupt malloc pool! */ | |
6839 | bs->commands = NULL; | |
6840 | bs->old_val = NULL; | |
6841 | } | |
6842 | /* On the chance that someone will soon try again to delete this same | |
6843 | bp, we mark it as deleted before freeing its storage. */ | |
6844 | bpt->type = bp_none; | |
6845 | ||
b8c9b27d | 6846 | xfree (bpt); |
c906108c SS |
6847 | } |
6848 | ||
4d6140d9 AC |
6849 | static void |
6850 | do_delete_breakpoint_cleanup (void *b) | |
6851 | { | |
6852 | delete_breakpoint (b); | |
6853 | } | |
6854 | ||
6855 | struct cleanup * | |
6856 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6857 | { | |
6858 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6859 | } | |
6860 | ||
6861 | struct cleanup * | |
6862 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6863 | { | |
6864 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6865 | } | |
6866 | ||
c906108c | 6867 | void |
fba45db2 | 6868 | delete_command (char *arg, int from_tty) |
c906108c SS |
6869 | { |
6870 | struct breakpoint *b, *temp; | |
6871 | ||
6872 | if (arg == 0) | |
6873 | { | |
6874 | int breaks_to_delete = 0; | |
6875 | ||
6876 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6877 | Do not delete internal or call-dummy breakpoints, these |
6878 | have to be deleted with an explicit breakpoint number argument. */ | |
6879 | ALL_BREAKPOINTS (b) | |
6880 | { | |
6881 | if (b->type != bp_call_dummy && | |
6882 | b->type != bp_shlib_event && | |
c4093a6a | 6883 | b->type != bp_thread_event && |
c5aa993b JM |
6884 | b->number >= 0) |
6885 | breaks_to_delete = 1; | |
6886 | } | |
c906108c SS |
6887 | |
6888 | /* Ask user only if there are some breakpoints to delete. */ | |
6889 | if (!from_tty | |
6890 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6891 | { | |
c5aa993b JM |
6892 | ALL_BREAKPOINTS_SAFE (b, temp) |
6893 | { | |
6894 | if (b->type != bp_call_dummy && | |
6895 | b->type != bp_shlib_event && | |
c4093a6a | 6896 | b->type != bp_thread_event && |
c5aa993b JM |
6897 | b->number >= 0) |
6898 | delete_breakpoint (b); | |
6899 | } | |
c906108c SS |
6900 | } |
6901 | } | |
6902 | else | |
6903 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6904 | } | |
6905 | ||
6906 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6907 | The value we return ends up being the return value from catch_errors. | |
6908 | Unused in this case. */ | |
6909 | ||
6910 | static int | |
fba45db2 | 6911 | breakpoint_re_set_one (PTR bint) |
c906108c | 6912 | { |
53a5351d JM |
6913 | /* get past catch_errs */ |
6914 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6915 | struct value *mark; |
6916 | int i; | |
6917 | struct symtabs_and_lines sals; | |
6918 | char *s; | |
6919 | enum enable save_enable; | |
6920 | ||
6921 | switch (b->type) | |
6922 | { | |
6923 | case bp_none: | |
53a5351d JM |
6924 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6925 | b->number); | |
c906108c SS |
6926 | return 0; |
6927 | case bp_breakpoint: | |
6928 | case bp_hardware_breakpoint: | |
6929 | case bp_catch_load: | |
6930 | case bp_catch_unload: | |
6931 | if (b->addr_string == NULL) | |
6932 | { | |
6933 | /* Anything without a string can't be re-set. */ | |
6934 | delete_breakpoint (b); | |
6935 | return 0; | |
6936 | } | |
6937 | /* In case we have a problem, disable this breakpoint. We'll restore | |
c5aa993b | 6938 | its status if we succeed. */ |
c906108c SS |
6939 | save_enable = b->enable; |
6940 | b->enable = disabled; | |
6941 | ||
6942 | set_language (b->language); | |
6943 | input_radix = b->input_radix; | |
6944 | s = b->addr_string; | |
c5aa993b | 6945 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6946 | for (i = 0; i < sals.nelts; i++) |
6947 | { | |
6948 | resolve_sal_pc (&sals.sals[i]); | |
6949 | ||
6950 | /* Reparse conditions, they might contain references to the | |
6951 | old symtab. */ | |
6952 | if (b->cond_string != NULL) | |
6953 | { | |
6954 | s = b->cond_string; | |
6955 | if (b->cond) | |
b8c9b27d | 6956 | xfree (b->cond); |
c906108c SS |
6957 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
6958 | } | |
6959 | ||
c5aa993b | 6960 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 6961 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
6962 | /* ...or new and old breakpoints both have source files, and |
6963 | the source file name or the line number changes... */ | |
c906108c SS |
6964 | || (b->source_file != NULL |
6965 | && sals.sals[i].symtab != NULL | |
6966 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
6967 | || b->line_number != sals.sals[i].line) | |
c906108c | 6968 | ) |
c5aa993b JM |
6969 | /* ...or we switch between having a source file and not having |
6970 | one. */ | |
6971 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
6972 | ) | |
c906108c SS |
6973 | { |
6974 | if (b->source_file != NULL) | |
b8c9b27d | 6975 | xfree (b->source_file); |
c906108c SS |
6976 | if (sals.sals[i].symtab == NULL) |
6977 | b->source_file = NULL; | |
6978 | else | |
6979 | b->source_file = | |
6980 | savestring (sals.sals[i].symtab->filename, | |
6981 | strlen (sals.sals[i].symtab->filename)); | |
6982 | b->line_number = sals.sals[i].line; | |
6983 | b->address = sals.sals[i].pc; | |
6984 | ||
c5aa993b JM |
6985 | /* Used to check for duplicates here, but that can |
6986 | cause trouble, as it doesn't check for disable | |
6987 | breakpoints. */ | |
c906108c SS |
6988 | |
6989 | mention (b); | |
6990 | ||
6991 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 6992 | rather than once for every breakpoint. */ |
c906108c SS |
6993 | breakpoints_changed (); |
6994 | } | |
6995 | b->section = sals.sals[i].section; | |
6996 | b->enable = save_enable; /* Restore it, this worked. */ | |
6997 | ||
6998 | ||
c5aa993b | 6999 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7000 | can be used. */ |
c5aa993b | 7001 | check_duplicates (b->address, b->section); |
c906108c SS |
7002 | |
7003 | } | |
b8c9b27d | 7004 | xfree (sals.sals); |
c906108c SS |
7005 | break; |
7006 | ||
7007 | case bp_watchpoint: | |
7008 | case bp_hardware_watchpoint: | |
7009 | case bp_read_watchpoint: | |
7010 | case bp_access_watchpoint: | |
7011 | innermost_block = NULL; | |
53a5351d JM |
7012 | /* The issue arises of what context to evaluate this in. The |
7013 | same one as when it was set, but what does that mean when | |
7014 | symbols have been re-read? We could save the filename and | |
7015 | functionname, but if the context is more local than that, the | |
7016 | best we could do would be something like how many levels deep | |
7017 | and which index at that particular level, but that's going to | |
7018 | be less stable than filenames or function names. */ | |
7019 | ||
c906108c SS |
7020 | /* So for now, just use a global context. */ |
7021 | if (b->exp) | |
b8c9b27d | 7022 | xfree (b->exp); |
c906108c SS |
7023 | b->exp = parse_expression (b->exp_string); |
7024 | b->exp_valid_block = innermost_block; | |
7025 | mark = value_mark (); | |
7026 | if (b->val) | |
7027 | value_free (b->val); | |
7028 | b->val = evaluate_expression (b->exp); | |
7029 | release_value (b->val); | |
7030 | if (VALUE_LAZY (b->val)) | |
7031 | value_fetch_lazy (b->val); | |
7032 | ||
7033 | if (b->cond_string != NULL) | |
7034 | { | |
7035 | s = b->cond_string; | |
7036 | if (b->cond) | |
b8c9b27d | 7037 | xfree (b->cond); |
c5aa993b | 7038 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c SS |
7039 | } |
7040 | if (b->enable == enabled) | |
7041 | mention (b); | |
7042 | value_free_to_mark (mark); | |
7043 | break; | |
c5aa993b JM |
7044 | case bp_catch_catch: |
7045 | case bp_catch_throw: | |
c906108c | 7046 | break; |
c5aa993b JM |
7047 | /* We needn't really do anything to reset these, since the mask |
7048 | that requests them is unaffected by e.g., new libraries being | |
7049 | loaded. */ | |
c906108c SS |
7050 | case bp_catch_fork: |
7051 | case bp_catch_vfork: | |
7052 | case bp_catch_exec: | |
7053 | break; | |
c5aa993b | 7054 | |
c906108c SS |
7055 | default: |
7056 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7057 | /* fall through */ | |
c5aa993b JM |
7058 | /* Delete longjmp breakpoints, they will be reset later by |
7059 | breakpoint_re_set. */ | |
c906108c SS |
7060 | case bp_longjmp: |
7061 | case bp_longjmp_resume: | |
7062 | delete_breakpoint (b); | |
7063 | break; | |
7064 | ||
c5aa993b JM |
7065 | /* This breakpoint is special, it's set up when the inferior |
7066 | starts and we really don't want to touch it. */ | |
c906108c SS |
7067 | case bp_shlib_event: |
7068 | ||
c4093a6a JM |
7069 | /* Like bp_shlib_event, this breakpoint type is special. |
7070 | Once it is set up, we do not want to touch it. */ | |
7071 | case bp_thread_event: | |
7072 | ||
c5aa993b JM |
7073 | /* Keep temporary breakpoints, which can be encountered when we step |
7074 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7075 | Otherwise these should have been blown away via the cleanup chain | |
7076 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7077 | case bp_until: |
7078 | case bp_finish: | |
7079 | case bp_watchpoint_scope: | |
7080 | case bp_call_dummy: | |
7081 | case bp_step_resume: | |
7082 | break; | |
7083 | } | |
7084 | ||
7085 | return 0; | |
7086 | } | |
7087 | ||
7088 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7089 | void | |
fba45db2 | 7090 | breakpoint_re_set (void) |
c906108c SS |
7091 | { |
7092 | struct breakpoint *b, *temp; | |
7093 | enum language save_language; | |
7094 | int save_input_radix; | |
7095 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
7096 | char message[sizeof (message1) + 30 /* slop */ ]; |
7097 | ||
c906108c SS |
7098 | save_language = current_language->la_language; |
7099 | save_input_radix = input_radix; | |
7100 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7101 | { |
53a5351d JM |
7102 | /* Format possible error msg */ |
7103 | sprintf (message, message1, b->number); | |
c5aa993b JM |
7104 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
7105 | } | |
c906108c SS |
7106 | set_language (save_language); |
7107 | input_radix = save_input_radix; | |
7108 | ||
7109 | #ifdef GET_LONGJMP_TARGET | |
7110 | create_longjmp_breakpoint ("longjmp"); | |
7111 | create_longjmp_breakpoint ("_longjmp"); | |
7112 | create_longjmp_breakpoint ("siglongjmp"); | |
7113 | create_longjmp_breakpoint ("_siglongjmp"); | |
7114 | create_longjmp_breakpoint (NULL); | |
7115 | #endif | |
7116 | ||
7117 | #if 0 | |
7118 | /* Took this out (temporarily at least), since it produces an extra | |
7119 | blank line at startup. This messes up the gdbtests. -PB */ | |
7120 | /* Blank line to finish off all those mention() messages we just printed. */ | |
7121 | printf_filtered ("\n"); | |
7122 | #endif | |
7123 | } | |
7124 | \f | |
7125 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
7126 | If from_tty is nonzero, it prints a message to that effect, | |
7127 | which ends with a period (no newline). */ | |
7128 | ||
7129 | /* Reset the thread number of this breakpoint: | |
7130 | ||
7131 | - If the breakpoint is for all threads, leave it as-is. | |
7132 | - Else, reset it to the current thread for inferior_pid. */ | |
7133 | void | |
fba45db2 | 7134 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7135 | { |
7136 | if (b->thread != -1) | |
7137 | { | |
7138 | if (in_thread_list (inferior_pid)) | |
c5aa993b | 7139 | b->thread = pid_to_thread_id (inferior_pid); |
c906108c SS |
7140 | } |
7141 | } | |
7142 | ||
7143 | void | |
fba45db2 | 7144 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c SS |
7145 | { |
7146 | register struct breakpoint *b; | |
7147 | ||
7148 | if (count < 0) | |
7149 | count = 0; | |
7150 | ||
7151 | ALL_BREAKPOINTS (b) | |
7152 | if (b->number == bptnum) | |
c5aa993b JM |
7153 | { |
7154 | b->ignore_count = count; | |
7155 | if (!from_tty) | |
c906108c | 7156 | return; |
c5aa993b JM |
7157 | else if (count == 0) |
7158 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7159 | bptnum); | |
7160 | else if (count == 1) | |
7161 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7162 | bptnum); | |
7163 | else | |
7164 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7165 | count, bptnum); | |
7166 | breakpoints_changed (); | |
7167 | return; | |
7168 | } | |
c906108c SS |
7169 | |
7170 | error ("No breakpoint number %d.", bptnum); | |
7171 | } | |
7172 | ||
7173 | /* Clear the ignore counts of all breakpoints. */ | |
7174 | void | |
fba45db2 | 7175 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7176 | { |
7177 | struct breakpoint *b; | |
7178 | ||
7179 | ALL_BREAKPOINTS (b) | |
7180 | b->ignore_count = 0; | |
7181 | } | |
7182 | ||
7183 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7184 | ||
7185 | static void | |
fba45db2 | 7186 | ignore_command (char *args, int from_tty) |
c906108c SS |
7187 | { |
7188 | char *p = args; | |
7189 | register int num; | |
7190 | ||
7191 | if (p == 0) | |
7192 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7193 | |
c906108c | 7194 | num = get_number (&p); |
5c44784c JM |
7195 | if (num == 0) |
7196 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7197 | if (*p == 0) |
7198 | error ("Second argument (specified ignore-count) is missing."); | |
7199 | ||
7200 | set_ignore_count (num, | |
7201 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7202 | from_tty); | |
7203 | printf_filtered ("\n"); | |
7204 | breakpoints_changed (); | |
7205 | } | |
7206 | \f | |
7207 | /* Call FUNCTION on each of the breakpoints | |
7208 | whose numbers are given in ARGS. */ | |
7209 | ||
7210 | static void | |
831662b3 | 7211 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c SS |
7212 | { |
7213 | register char *p = args; | |
7214 | char *p1; | |
7215 | register int num; | |
5c44784c | 7216 | register struct breakpoint *b, *tmp; |
11cf8741 | 7217 | int match; |
c906108c SS |
7218 | |
7219 | if (p == 0) | |
7220 | error_no_arg ("one or more breakpoint numbers"); | |
7221 | ||
7222 | while (*p) | |
7223 | { | |
11cf8741 | 7224 | match = 0; |
c906108c | 7225 | p1 = p; |
c5aa993b | 7226 | |
5c44784c JM |
7227 | num = get_number_or_range (&p1); |
7228 | if (num == 0) | |
c5aa993b | 7229 | { |
5c44784c JM |
7230 | warning ("bad breakpoint number at or near '%s'", p); |
7231 | } | |
7232 | else | |
7233 | { | |
7234 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7235 | if (b->number == num) | |
7236 | { | |
7237 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7238 | match = 1; |
5c44784c JM |
7239 | function (b); |
7240 | if (related_breakpoint) | |
7241 | function (related_breakpoint); | |
11cf8741 | 7242 | break; |
5c44784c | 7243 | } |
11cf8741 JM |
7244 | if (match == 0) |
7245 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7246 | } |
c906108c SS |
7247 | p = p1; |
7248 | } | |
7249 | } | |
7250 | ||
7251 | void | |
fba45db2 | 7252 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7253 | { |
7254 | /* Never disable a watchpoint scope breakpoint; we want to | |
7255 | hit them when we leave scope so we can delete both the | |
7256 | watchpoint and its scope breakpoint at that time. */ | |
7257 | if (bpt->type == bp_watchpoint_scope) | |
7258 | return; | |
7259 | ||
c2c6d25f JM |
7260 | /* You can't disable permanent breakpoints. */ |
7261 | if (bpt->enable == permanent) | |
7262 | return; | |
7263 | ||
c906108c SS |
7264 | bpt->enable = disabled; |
7265 | ||
7266 | check_duplicates (bpt->address, bpt->section); | |
7267 | ||
7268 | if (modify_breakpoint_hook) | |
7269 | modify_breakpoint_hook (bpt); | |
104c1213 | 7270 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7271 | } |
7272 | ||
7273 | /* ARGSUSED */ | |
7274 | static void | |
fba45db2 | 7275 | disable_command (char *args, int from_tty) |
c906108c SS |
7276 | { |
7277 | register struct breakpoint *bpt; | |
7278 | if (args == 0) | |
7279 | ALL_BREAKPOINTS (bpt) | |
7280 | switch (bpt->type) | |
c5aa993b JM |
7281 | { |
7282 | case bp_none: | |
53a5351d JM |
7283 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7284 | bpt->number); | |
c5aa993b JM |
7285 | continue; |
7286 | case bp_breakpoint: | |
7287 | case bp_catch_load: | |
7288 | case bp_catch_unload: | |
7289 | case bp_catch_fork: | |
7290 | case bp_catch_vfork: | |
7291 | case bp_catch_exec: | |
7292 | case bp_catch_catch: | |
7293 | case bp_catch_throw: | |
7294 | case bp_hardware_breakpoint: | |
7295 | case bp_watchpoint: | |
7296 | case bp_hardware_watchpoint: | |
7297 | case bp_read_watchpoint: | |
7298 | case bp_access_watchpoint: | |
7299 | disable_breakpoint (bpt); | |
7300 | default: | |
7301 | continue; | |
7302 | } | |
c906108c SS |
7303 | else |
7304 | map_breakpoint_numbers (args, disable_breakpoint); | |
7305 | } | |
7306 | ||
7307 | static void | |
fba45db2 | 7308 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7309 | { |
7310 | struct frame_info *save_selected_frame = NULL; | |
7311 | int save_selected_frame_level = -1; | |
7312 | int target_resources_ok, other_type_used; | |
7313 | struct value *mark; | |
7314 | ||
7315 | if (bpt->type == bp_hardware_breakpoint) | |
7316 | { | |
7317 | int i; | |
c5aa993b | 7318 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7319 | target_resources_ok = |
7320 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7321 | i + 1, 0); | |
c906108c | 7322 | if (target_resources_ok == 0) |
c5aa993b | 7323 | error ("No hardware breakpoint support in the target."); |
c906108c | 7324 | else if (target_resources_ok < 0) |
c5aa993b | 7325 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7326 | } |
7327 | ||
c2c6d25f JM |
7328 | if (bpt->enable != permanent) |
7329 | bpt->enable = enabled; | |
c906108c SS |
7330 | bpt->disposition = disposition; |
7331 | check_duplicates (bpt->address, bpt->section); | |
7332 | breakpoints_changed (); | |
7333 | ||
53a5351d JM |
7334 | if (bpt->type == bp_watchpoint || |
7335 | bpt->type == bp_hardware_watchpoint || | |
7336 | bpt->type == bp_read_watchpoint || | |
7337 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7338 | { |
7339 | if (bpt->exp_valid_block != NULL) | |
7340 | { | |
7341 | struct frame_info *fr = | |
7342 | ||
c5aa993b JM |
7343 | /* Ensure that we have the current frame. Else, this |
7344 | next query may pessimistically be answered as, "No, | |
7345 | not within current scope". */ | |
7346 | get_current_frame (); | |
7347 | fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
c906108c SS |
7348 | if (fr == NULL) |
7349 | { | |
7350 | printf_filtered ("\ | |
7351 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7352 | is valid is not currently in scope.\n", bpt->number); | |
7353 | bpt->enable = disabled; | |
7354 | return; | |
7355 | } | |
7356 | ||
7357 | save_selected_frame = selected_frame; | |
7358 | save_selected_frame_level = selected_frame_level; | |
7359 | select_frame (fr, -1); | |
7360 | } | |
7361 | ||
7362 | value_free (bpt->val); | |
7363 | mark = value_mark (); | |
7364 | bpt->val = evaluate_expression (bpt->exp); | |
7365 | release_value (bpt->val); | |
7366 | if (VALUE_LAZY (bpt->val)) | |
7367 | value_fetch_lazy (bpt->val); | |
7368 | ||
7369 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7370 | bpt->type == bp_read_watchpoint || |
7371 | bpt->type == bp_access_watchpoint) | |
7372 | { | |
7373 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7374 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7375 | ||
7376 | /* Hack around 'unused var' error for some targets here */ | |
7377 | (void) mem_cnt, i; | |
7378 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7379 | bpt->type, i + mem_cnt, other_type_used); | |
7380 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7381 | bp_watchpoint in the following condition */ | |
7382 | if (target_resources_ok < 0) | |
7383 | { | |
7384 | printf_filtered ("\ | |
c906108c SS |
7385 | Cannot enable watchpoint %d because target watch resources\n\ |
7386 | have been allocated for other watchpoints.\n", bpt->number); | |
c5aa993b JM |
7387 | bpt->enable = disabled; |
7388 | value_free_to_mark (mark); | |
7389 | return; | |
7390 | } | |
7391 | } | |
c906108c SS |
7392 | |
7393 | if (save_selected_frame_level >= 0) | |
c6902688 | 7394 | select_frame (save_selected_frame, save_selected_frame_level); |
c906108c SS |
7395 | value_free_to_mark (mark); |
7396 | } | |
7397 | if (modify_breakpoint_hook) | |
7398 | modify_breakpoint_hook (bpt); | |
104c1213 | 7399 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7400 | } |
7401 | ||
7402 | void | |
fba45db2 | 7403 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7404 | { |
7405 | do_enable_breakpoint (bpt, bpt->disposition); | |
7406 | } | |
7407 | ||
7408 | /* The enable command enables the specified breakpoints (or all defined | |
7409 | breakpoints) so they once again become (or continue to be) effective | |
7410 | in stopping the inferior. */ | |
7411 | ||
7412 | /* ARGSUSED */ | |
7413 | static void | |
fba45db2 | 7414 | enable_command (char *args, int from_tty) |
c906108c SS |
7415 | { |
7416 | register struct breakpoint *bpt; | |
7417 | if (args == 0) | |
7418 | ALL_BREAKPOINTS (bpt) | |
7419 | switch (bpt->type) | |
c5aa993b JM |
7420 | { |
7421 | case bp_none: | |
53a5351d JM |
7422 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7423 | bpt->number); | |
c5aa993b JM |
7424 | continue; |
7425 | case bp_breakpoint: | |
7426 | case bp_catch_load: | |
7427 | case bp_catch_unload: | |
7428 | case bp_catch_fork: | |
7429 | case bp_catch_vfork: | |
7430 | case bp_catch_exec: | |
7431 | case bp_catch_catch: | |
7432 | case bp_catch_throw: | |
7433 | case bp_hardware_breakpoint: | |
7434 | case bp_watchpoint: | |
7435 | case bp_hardware_watchpoint: | |
7436 | case bp_read_watchpoint: | |
7437 | case bp_access_watchpoint: | |
7438 | enable_breakpoint (bpt); | |
7439 | default: | |
7440 | continue; | |
7441 | } | |
c906108c SS |
7442 | else |
7443 | map_breakpoint_numbers (args, enable_breakpoint); | |
7444 | } | |
7445 | ||
7446 | static void | |
fba45db2 | 7447 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7448 | { |
7449 | do_enable_breakpoint (bpt, disable); | |
7450 | } | |
7451 | ||
7452 | /* ARGSUSED */ | |
7453 | static void | |
fba45db2 | 7454 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7455 | { |
7456 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7457 | } | |
7458 | ||
7459 | static void | |
fba45db2 | 7460 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7461 | { |
7462 | do_enable_breakpoint (bpt, del); | |
7463 | } | |
7464 | ||
7465 | /* ARGSUSED */ | |
7466 | static void | |
fba45db2 | 7467 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7468 | { |
7469 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7470 | } | |
7471 | \f | |
7472 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7473 | ||
7474 | struct symtabs_and_lines | |
fba45db2 | 7475 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7476 | { |
7477 | struct symtabs_and_lines sals; | |
7478 | if (string == 0) | |
7479 | error ("Empty line specification."); | |
7480 | if (default_breakpoint_valid) | |
7481 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7482 | default_breakpoint_symtab, |
7483 | default_breakpoint_line, | |
c5aa993b | 7484 | (char ***) NULL); |
c906108c SS |
7485 | else |
7486 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 7487 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7488 | if (*string) |
7489 | error ("Junk at end of line specification: %s", string); | |
7490 | return sals; | |
7491 | } | |
7492 | \f | |
7493 | void | |
fba45db2 | 7494 | _initialize_breakpoint (void) |
c906108c SS |
7495 | { |
7496 | struct cmd_list_element *c; | |
7497 | ||
7498 | breakpoint_chain = 0; | |
7499 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7500 | before a breakpoint is set. */ | |
7501 | breakpoint_count = 0; | |
7502 | ||
7503 | add_com ("ignore", class_breakpoint, ignore_command, | |
7504 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7505 | Usage is `ignore N COUNT'."); | |
7506 | if (xdb_commands) | |
c5aa993b | 7507 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7508 | |
7509 | add_com ("commands", class_breakpoint, commands_command, | |
7510 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7511 | Give breakpoint number as argument after \"commands\".\n\ | |
7512 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7513 | The commands themselves follow starting on the next line.\n\ | |
7514 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7515 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7516 | then no output is printed when it is hit, except what the commands print."); | |
7517 | ||
7518 | add_com ("condition", class_breakpoint, condition_command, | |
7519 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7520 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
7521 | expression to be evaluated whenever breakpoint N is reached. "); | |
7522 | ||
7523 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
7524 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
7525 | Like \"break\" except the breakpoint is only temporary,\n\ | |
7526 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7527 | by using \"enable delete\" on the breakpoint number."); | |
c5aa993b JM |
7528 | add_com ("txbreak", class_breakpoint, tbreak_at_finish_command, |
7529 | "Set temporary breakpoint at procedure exit. Either there should\n\ | |
c906108c SS |
7530 | be no argument or the argument must be a depth.\n"); |
7531 | ||
7532 | add_com ("hbreak", class_breakpoint, hbreak_command, | |
7533 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7534 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
7535 | some target hardware may not have this support."); | |
7536 | ||
7537 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
7538 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7539 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
7540 | so it will be deleted when hit."); | |
7541 | ||
7542 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7543 | "Enable some breakpoints.\n\ | |
7544 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7545 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7546 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7547 | With a subcommand you can enable temporarily.", | |
7548 | &enablelist, "enable ", 1, &cmdlist); | |
7549 | if (xdb_commands) | |
c5aa993b JM |
7550 | add_com ("ab", class_breakpoint, enable_command, |
7551 | "Enable some breakpoints.\n\ | |
c906108c SS |
7552 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7553 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7554 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7555 | With a subcommand you can enable temporarily."); | |
7556 | ||
7557 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7558 | ||
7559 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7560 | "Enable some breakpoints.\n\ |
c906108c SS |
7561 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7562 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7563 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7564 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7565 | |
7566 | add_cmd ("once", no_class, enable_once_command, | |
7567 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7568 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7569 | &enablebreaklist); | |
7570 | ||
7571 | add_cmd ("delete", no_class, enable_delete_command, | |
7572 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7573 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7574 | &enablebreaklist); | |
7575 | ||
7576 | add_cmd ("delete", no_class, enable_delete_command, | |
7577 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7578 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7579 | &enablelist); | |
7580 | ||
7581 | add_cmd ("once", no_class, enable_once_command, | |
7582 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7583 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7584 | &enablelist); | |
7585 | ||
7586 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7587 | "Disable some breakpoints.\n\ |
c906108c SS |
7588 | Arguments are breakpoint numbers with spaces in between.\n\ |
7589 | To disable all breakpoints, give no argument.\n\ | |
7590 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7591 | &disablelist, "disable ", 1, &cmdlist); | |
7592 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7593 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7594 | if (xdb_commands) | |
c5aa993b JM |
7595 | add_com ("sb", class_breakpoint, disable_command, |
7596 | "Disable some breakpoints.\n\ | |
c906108c SS |
7597 | Arguments are breakpoint numbers with spaces in between.\n\ |
7598 | To disable all breakpoints, give no argument.\n\ | |
7599 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7600 | ||
7601 | add_cmd ("breakpoints", class_alias, disable_command, | |
7602 | "Disable some breakpoints.\n\ | |
7603 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7604 | To disable all breakpoints, give no argument.\n\ | |
7605 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7606 | This command may be abbreviated \"disable\".", | |
7607 | &disablelist); | |
7608 | ||
7609 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7610 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7611 | Arguments are breakpoint numbers with spaces in between.\n\ |
7612 | To delete all breakpoints, give no argument.\n\ | |
7613 | \n\ | |
7614 | Also a prefix command for deletion of other GDB objects.\n\ | |
7615 | The \"unset\" command is also an alias for \"delete\".", | |
7616 | &deletelist, "delete ", 1, &cmdlist); | |
7617 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7618 | if (xdb_commands) | |
7619 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7620 | "Delete some breakpoints.\n\ |
c906108c SS |
7621 | Arguments are breakpoint numbers with spaces in between.\n\ |
7622 | To delete all breakpoints, give no argument.\n"); | |
7623 | ||
7624 | add_cmd ("breakpoints", class_alias, delete_command, | |
7625 | "Delete some breakpoints or auto-display expressions.\n\ | |
7626 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7627 | To delete all breakpoints, give no argument.\n\ | |
7628 | This command may be abbreviated \"delete\".", | |
7629 | &deletelist); | |
7630 | ||
7631 | add_com ("clear", class_breakpoint, clear_command, | |
7632 | concat ("Clear breakpoint at specified line or function.\n\ | |
7633 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7634 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7635 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7636 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7637 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7638 | is executing in.\n\ |
7639 | \n\ | |
7640 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7641 | ||
7642 | add_com ("break", class_breakpoint, break_command, | |
7643 | concat ("Set breakpoint at specified line or function.\n\ | |
7644 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7645 | If line number is specified, break at start of code for that line.\n\ | |
7646 | If function is specified, break at start of code for that function.\n\ | |
7647 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7648 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7649 | This is useful for breaking on return to a stack frame.\n\ |
7650 | \n\ | |
7651 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7652 | \n\ | |
7653 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7654 | add_com_alias ("b", "break", class_run, 1); | |
7655 | add_com_alias ("br", "break", class_run, 1); | |
7656 | add_com_alias ("bre", "break", class_run, 1); | |
7657 | add_com_alias ("brea", "break", class_run, 1); | |
7658 | ||
c5aa993b JM |
7659 | add_com ("xbreak", class_breakpoint, break_at_finish_command, |
7660 | concat ("Set breakpoint at procedure exit. \n\ | |
c906108c SS |
7661 | Argument may be function name, or \"*\" and an address.\n\ |
7662 | If function is specified, break at end of code for that function.\n\ | |
7663 | If an address is specified, break at the end of the function that contains \n\ | |
7664 | that exact address.\n", | |
c5aa993b | 7665 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7666 | This is useful for breaking on return to a stack frame.\n\ |
7667 | \n\ | |
7668 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7669 | \n\ | |
7670 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7671 | add_com_alias ("xb", "xbreak", class_breakpoint, 1); | |
7672 | add_com_alias ("xbr", "xbreak", class_breakpoint, 1); | |
7673 | add_com_alias ("xbre", "xbreak", class_breakpoint, 1); | |
7674 | add_com_alias ("xbrea", "xbreak", class_breakpoint, 1); | |
7675 | ||
7676 | if (xdb_commands) | |
7677 | { | |
7678 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7679 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
7680 | add_com ("bx", class_breakpoint, break_at_finish_at_depth_command, | |
c5aa993b | 7681 | "Set breakpoint at procedure exit. Either there should\n\ |
c906108c SS |
7682 | be no argument or the argument must be a depth.\n"); |
7683 | } | |
7684 | ||
7685 | if (dbx_commands) | |
7686 | { | |
c5aa993b JM |
7687 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7688 | "Break in function/address or break at a line in the current file.", | |
7689 | &stoplist, "stop ", 1, &cmdlist); | |
7690 | add_cmd ("in", class_breakpoint, stopin_command, | |
7691 | "Break in function or address.\n", &stoplist); | |
7692 | add_cmd ("at", class_breakpoint, stopat_command, | |
7693 | "Break at a line in the current file.\n", &stoplist); | |
7694 | add_com ("status", class_info, breakpoints_info, | |
7695 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7696 | The \"Type\" column indicates one of:\n\ |
7697 | \tbreakpoint - normal breakpoint\n\ | |
7698 | \twatchpoint - watchpoint\n\ | |
7699 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7700 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7701 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7702 | address and file/line number respectively.\n\n", | |
c5aa993b | 7703 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7704 | are set to the address of the last breakpoint listed.\n\n\ |
7705 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7706 | breakpoint set.", NULL)); | |
7707 | } | |
7708 | ||
7709 | add_info ("breakpoints", breakpoints_info, | |
7710 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7711 | The \"Type\" column indicates one of:\n\ | |
7712 | \tbreakpoint - normal breakpoint\n\ | |
7713 | \twatchpoint - watchpoint\n\ | |
7714 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7715 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7716 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7717 | address and file/line number respectively.\n\n", | |
c5aa993b | 7718 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7719 | are set to the address of the last breakpoint listed.\n\n\ |
7720 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7721 | breakpoint set.", NULL)); | |
7722 | ||
7723 | if (xdb_commands) | |
c5aa993b JM |
7724 | add_com ("lb", class_breakpoint, breakpoints_info, |
7725 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7726 | The \"Type\" column indicates one of:\n\ |
7727 | \tbreakpoint - normal breakpoint\n\ | |
7728 | \twatchpoint - watchpoint\n\ | |
7729 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7730 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7731 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7732 | address and file/line number respectively.\n\n", | |
c5aa993b | 7733 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7734 | are set to the address of the last breakpoint listed.\n\n\ |
7735 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7736 | breakpoint set.", NULL)); | |
7737 | ||
c906108c | 7738 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7739 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7740 | The \"Type\" column indicates one of:\n\ |
7741 | \tbreakpoint - normal breakpoint\n\ | |
7742 | \twatchpoint - watchpoint\n\ | |
7743 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7744 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7745 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7746 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7747 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7748 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7749 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7750 | address and file/line number respectively.\n\n", | |
c5aa993b | 7751 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7752 | are set to the address of the last breakpoint listed.\n\n\ |
7753 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7754 | breakpoint set.", NULL), | |
7755 | &maintenanceinfolist); | |
7756 | ||
c906108c | 7757 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7758 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7759 | Raised signals may be caught:\n\ |
7760 | \tcatch signal - all signals\n\ | |
7761 | \tcatch signal <signame> - a particular signal\n\ | |
7762 | Raised exceptions may be caught:\n\ | |
7763 | \tcatch throw - all exceptions, when thrown\n\ | |
7764 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7765 | \tcatch catch - all exceptions, when caught\n\ | |
7766 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7767 | Thread or process events may be caught:\n\ | |
7768 | \tcatch thread_start - any threads, just after creation\n\ | |
7769 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7770 | \tcatch thread_join - any threads, just after joins\n\ | |
7771 | Process events may be caught:\n\ | |
7772 | \tcatch start - any processes, just after creation\n\ | |
7773 | \tcatch exit - any processes, just before expiration\n\ | |
7774 | \tcatch fork - calls to fork()\n\ | |
7775 | \tcatch vfork - calls to vfork()\n\ | |
7776 | \tcatch exec - calls to exec()\n\ | |
7777 | Dynamically-linked library events may be caught:\n\ | |
7778 | \tcatch load - loads of any library\n\ | |
7779 | \tcatch load <libname> - loads of a particular library\n\ | |
7780 | \tcatch unload - unloads of any library\n\ | |
7781 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7782 | The act of your program's execution stopping may also be caught:\n\ | |
7783 | \tcatch stop\n\n\ | |
7784 | C++ exceptions may be caught:\n\ | |
7785 | \tcatch throw - all exceptions, when thrown\n\ | |
7786 | \tcatch catch - all exceptions, when caught\n\ | |
7787 | \n\ | |
7788 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7789 | after a fork or vfork is caught.\n\n\ | |
7790 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7791 | |
c906108c | 7792 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7793 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7794 | Args like \"catch\" command.\n\ |
7795 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7796 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7797 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b JM |
7798 | |
7799 | add_com ("watch", class_breakpoint, watch_command, | |
c906108c SS |
7800 | "Set a watchpoint for an expression.\n\ |
7801 | A watchpoint stops execution of your program whenever the value of\n\ | |
7802 | an expression changes."); | |
7803 | ||
7804 | add_com ("rwatch", class_breakpoint, rwatch_command, | |
7805 | "Set a read watchpoint for an expression.\n\ | |
7806 | A watchpoint stops execution of your program whenever the value of\n\ | |
7807 | an expression is read."); | |
7808 | ||
7809 | add_com ("awatch", class_breakpoint, awatch_command, | |
7810 | "Set a watchpoint for an expression.\n\ | |
7811 | A watchpoint stops execution of your program whenever the value of\n\ | |
7812 | an expression is either read or written."); | |
7813 | ||
7814 | add_info ("watchpoints", breakpoints_info, | |
7815 | "Synonym for ``info breakpoints''."); | |
7816 | ||
7817 | ||
7818 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7819 | (char *) &can_use_hw_watchpoints, |
7820 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7821 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7822 | such is available. (However, any hardware watchpoints that were\n\ | |
7823 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7824 | hardware.)", | |
c5aa993b | 7825 | &setlist); |
c906108c SS |
7826 | add_show_from_set (c, &showlist); |
7827 | ||
7828 | can_use_hw_watchpoints = 1; | |
7829 | } |