Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
a881cf8e | 4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software |
8926118c | 5 | Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include <ctype.h> | |
26 | #include "symtab.h" | |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "expression.h" | |
31 | #include "gdbcore.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "value.h" | |
34 | #include "command.h" | |
35 | #include "inferior.h" | |
36 | #include "gdbthread.h" | |
37 | #include "target.h" | |
38 | #include "language.h" | |
39 | #include "gdb_string.h" | |
40 | #include "demangle.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
c906108c | 52 | |
104c1213 JM |
53 | #include "gdb-events.h" |
54 | ||
c906108c SS |
55 | /* Prototypes for local functions. */ |
56 | ||
c2c6d25f JM |
57 | static void until_break_command_continuation (struct continuation_arg *arg); |
58 | ||
a14ed312 | 59 | static void catch_command_1 (char *, int, int); |
c906108c | 60 | |
a14ed312 | 61 | static void enable_delete_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 64 | |
a14ed312 | 65 | static void enable_once_command (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 68 | |
a14ed312 | 69 | static void disable_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void enable_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 74 | |
a14ed312 | 75 | static void ignore_command (char *, int); |
c906108c | 76 | |
4efb68b1 | 77 | static int breakpoint_re_set_one (void *); |
c906108c | 78 | |
a14ed312 | 79 | static void clear_command (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void catch_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void handle_gnu_4_16_catch_command (char *, int, int); |
c906108c | 84 | |
a14ed312 | 85 | static struct symtabs_and_lines get_catch_sals (int); |
c906108c | 86 | |
a14ed312 | 87 | static void watch_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 90 | |
e5d66720 PS |
91 | extern void break_at_finish_command (char *, int); |
92 | extern void break_at_finish_at_depth_command (char *, int); | |
7a292a7a | 93 | |
e5d66720 | 94 | extern void tbreak_at_finish_command (char *, int); |
7a292a7a | 95 | |
a14ed312 | 96 | static void break_command_1 (char *, int, int); |
c906108c | 97 | |
a14ed312 | 98 | static void mention (struct breakpoint *); |
c906108c | 99 | |
4d28f7a8 | 100 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 101 | |
9f60f21b | 102 | static void check_duplicates (struct breakpoint *); |
c906108c | 103 | |
a14ed312 | 104 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 105 | |
a14ed312 | 106 | static void breakpoints_info (char *, int); |
c906108c | 107 | |
a14ed312 | 108 | static void breakpoint_1 (int, int); |
c906108c | 109 | |
a14ed312 | 110 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 111 | |
4efb68b1 | 112 | static int breakpoint_cond_eval (void *); |
c906108c | 113 | |
4efb68b1 | 114 | static void cleanup_executing_breakpoints (void *); |
c906108c | 115 | |
a14ed312 | 116 | static void commands_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void condition_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static int get_number_trailer (char **, int); |
c906108c | 121 | |
a14ed312 | 122 | void set_breakpoint_count (int); |
c906108c | 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; | |
b5de0fa7 | 140 | int enable_p; |
c5aa993b JM |
141 | } |
142 | args_for_catchpoint_enable; | |
c906108c | 143 | |
4efb68b1 | 144 | static int watchpoint_check (void *); |
c906108c | 145 | |
4efb68b1 | 146 | static int cover_target_enable_exception_callback (void *); |
c906108c | 147 | |
a14ed312 | 148 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 149 | |
a14ed312 | 150 | static void create_longjmp_breakpoint (char *); |
c906108c | 151 | |
1900040c MS |
152 | static void create_overlay_event_breakpoint (char *); |
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 | ||
c906108c SS |
213 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
214 | if such is available. */ | |
215 | static int can_use_hw_watchpoints; | |
216 | ||
a14ed312 | 217 | void _initialize_breakpoint (void); |
c906108c | 218 | |
c5aa993b | 219 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 220 | |
c906108c SS |
221 | /* Are we executing breakpoint commands? */ |
222 | static int executing_breakpoint_commands; | |
223 | ||
c02f5703 MS |
224 | /* Are overlay event breakpoints enabled? */ |
225 | static int overlay_events_enabled; | |
226 | ||
c906108c SS |
227 | /* Walk the following statement or block through all breakpoints. |
228 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
229 | breakpoint. */ | |
230 | ||
5c44784c | 231 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 232 | |
5c44784c JM |
233 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
234 | for (B = breakpoint_chain; \ | |
235 | B ? (TMP=B->next, 1): 0; \ | |
236 | B = TMP) | |
c906108c SS |
237 | |
238 | /* True if SHIFT_INST_REGS defined, false otherwise. */ | |
239 | ||
240 | int must_shift_inst_regs = | |
241 | #if defined(SHIFT_INST_REGS) | |
242 | 1 | |
243 | #else | |
244 | 0 | |
245 | #endif | |
c5aa993b | 246 | ; |
c906108c SS |
247 | |
248 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ | |
249 | ||
250 | int show_breakpoint_hit_counts = 1; | |
251 | ||
252 | /* Chain of all breakpoints defined. */ | |
253 | ||
254 | struct breakpoint *breakpoint_chain; | |
255 | ||
256 | /* Number of last breakpoint made. */ | |
257 | ||
258 | int breakpoint_count; | |
259 | ||
c5aa993b JM |
260 | /* Pointer to current exception event record */ |
261 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
262 | |
263 | /* Indicator of whether exception catchpoints should be nuked | |
264 | between runs of a program */ | |
265 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 266 | |
c906108c SS |
267 | /* Indicator of when exception catchpoints set-up should be |
268 | reinitialized -- e.g. when program is re-run */ | |
269 | int exception_support_initialized = 0; | |
270 | ||
271 | /* This function returns a pointer to the string representation of the | |
272 | pathname of the dynamically-linked library that has just been | |
273 | loaded. | |
274 | ||
275 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
276 | or undefined results are guaranteed. | |
277 | ||
278 | This string's contents are only valid immediately after the | |
279 | inferior has stopped in the dynamic linker hook, and becomes | |
280 | invalid as soon as the inferior is continued. Clients should make | |
281 | a copy of this string if they wish to continue the inferior and | |
282 | then access the string. */ | |
283 | ||
284 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
285 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
286 | #endif | |
287 | ||
288 | /* This function returns a pointer to the string representation of the | |
289 | pathname of the dynamically-linked library that has just been | |
290 | unloaded. | |
291 | ||
292 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
293 | TRUE, or undefined results are guaranteed. | |
294 | ||
295 | This string's contents are only valid immediately after the | |
296 | inferior has stopped in the dynamic linker hook, and becomes | |
297 | invalid as soon as the inferior is continued. Clients should make | |
298 | a copy of this string if they wish to continue the inferior and | |
299 | then access the string. */ | |
300 | ||
301 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
302 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
303 | #endif | |
304 | ||
305 | /* This function is called by the "catch load" command. It allows the | |
306 | debugger to be notified by the dynamic linker when a specified | |
307 | library file (or any library file, if filename is NULL) is loaded. */ | |
308 | ||
309 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
310 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
311 | error ("catch of library loads not yet implemented on this platform") | |
312 | #endif | |
313 | ||
314 | /* This function is called by the "catch unload" command. It allows | |
315 | the debugger to be notified by the dynamic linker when a specified | |
316 | library file (or any library file, if filename is NULL) is | |
317 | unloaded. */ | |
318 | ||
319 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
320 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
321 | error ("catch of library unloads not yet implemented on this platform") | |
322 | #endif | |
323 | ||
324 | /* Set breakpoint count to NUM. */ | |
325 | ||
326 | void | |
fba45db2 | 327 | set_breakpoint_count (int num) |
c906108c SS |
328 | { |
329 | breakpoint_count = num; | |
330 | set_internalvar (lookup_internalvar ("bpnum"), | |
331 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
332 | } | |
333 | ||
334 | /* Used in run_command to zero the hit count when a new run starts. */ | |
335 | ||
336 | void | |
fba45db2 | 337 | clear_breakpoint_hit_counts (void) |
c906108c SS |
338 | { |
339 | struct breakpoint *b; | |
340 | ||
341 | ALL_BREAKPOINTS (b) | |
342 | b->hit_count = 0; | |
343 | } | |
344 | ||
345 | /* Default address, symtab and line to put a breakpoint at | |
346 | for "break" command with no arg. | |
347 | if default_breakpoint_valid is zero, the other three are | |
348 | not valid, and "break" with no arg is an error. | |
349 | ||
350 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
351 | ||
352 | int default_breakpoint_valid; | |
353 | CORE_ADDR default_breakpoint_address; | |
354 | struct symtab *default_breakpoint_symtab; | |
355 | int default_breakpoint_line; | |
356 | \f | |
357 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
358 | Advance *PP after the string and any trailing whitespace. | |
359 | ||
360 | Currently the string can either be a number or "$" followed by the name | |
361 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
362 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
363 | ||
364 | TRAILER is a character which can be found after the number; most | |
365 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 366 | static int |
fba45db2 | 367 | get_number_trailer (char **pp, int trailer) |
c906108c | 368 | { |
5c44784c | 369 | int retval = 0; /* default */ |
c906108c SS |
370 | char *p = *pp; |
371 | ||
372 | if (p == NULL) | |
373 | /* Empty line means refer to the last breakpoint. */ | |
374 | return breakpoint_count; | |
375 | else if (*p == '$') | |
376 | { | |
377 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 378 | to pass to lookup_internalvar(). */ |
c906108c SS |
379 | char *varname; |
380 | char *start = ++p; | |
278cd55f | 381 | struct value *val; |
c906108c SS |
382 | |
383 | while (isalnum (*p) || *p == '_') | |
384 | p++; | |
385 | varname = (char *) alloca (p - start + 1); | |
386 | strncpy (varname, start, p - start); | |
387 | varname[p - start] = '\0'; | |
388 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
389 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
390 | retval = (int) value_as_long (val); | |
391 | else | |
392 | { | |
393 | printf_filtered ("Convenience variable must have integer value.\n"); | |
394 | retval = 0; | |
395 | } | |
c906108c SS |
396 | } |
397 | else | |
398 | { | |
399 | if (*p == '-') | |
400 | ++p; | |
401 | while (*p >= '0' && *p <= '9') | |
402 | ++p; | |
403 | if (p == *pp) | |
404 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
405 | { |
406 | /* Skip non-numeric token */ | |
407 | while (*p && !isspace((int) *p)) | |
408 | ++p; | |
409 | /* Return zero, which caller must interpret as error. */ | |
410 | retval = 0; | |
411 | } | |
412 | else | |
413 | retval = atoi (*pp); | |
414 | } | |
415 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
416 | { | |
417 | /* Trailing junk: return 0 and let caller print error msg. */ | |
418 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
419 | ++p; | |
420 | retval = 0; | |
c906108c | 421 | } |
c906108c SS |
422 | while (isspace (*p)) |
423 | p++; | |
424 | *pp = p; | |
425 | return retval; | |
426 | } | |
5c44784c | 427 | |
11cf8741 | 428 | |
5c44784c JM |
429 | /* Like get_number_trailer, but don't allow a trailer. */ |
430 | int | |
fba45db2 | 431 | get_number (char **pp) |
5c44784c JM |
432 | { |
433 | return get_number_trailer (pp, '\0'); | |
434 | } | |
435 | ||
436 | /* Parse a number or a range. | |
437 | * A number will be of the form handled by get_number. | |
438 | * A range will be of the form <number1> - <number2>, and | |
439 | * will represent all the integers between number1 and number2, | |
440 | * inclusive. | |
441 | * | |
442 | * While processing a range, this fuction is called iteratively; | |
443 | * At each call it will return the next value in the range. | |
444 | * | |
445 | * At the beginning of parsing a range, the char pointer PP will | |
446 | * be advanced past <number1> and left pointing at the '-' token. | |
447 | * Subsequent calls will not advance the pointer until the range | |
448 | * is completed. The call that completes the range will advance | |
449 | * pointer PP past <number2>. | |
450 | */ | |
451 | ||
452 | int | |
fba45db2 | 453 | get_number_or_range (char **pp) |
5c44784c JM |
454 | { |
455 | static int last_retval, end_value; | |
456 | static char *end_ptr; | |
457 | static int in_range = 0; | |
458 | ||
459 | if (**pp != '-') | |
460 | { | |
461 | /* Default case: pp is pointing either to a solo number, | |
462 | or to the first number of a range. */ | |
463 | last_retval = get_number_trailer (pp, '-'); | |
464 | if (**pp == '-') | |
465 | { | |
466 | char **temp; | |
467 | ||
468 | /* This is the start of a range (<number1> - <number2>). | |
469 | Skip the '-', parse and remember the second number, | |
470 | and also remember the end of the final token. */ | |
471 | ||
472 | temp = &end_ptr; | |
473 | end_ptr = *pp + 1; | |
474 | while (isspace ((int) *end_ptr)) | |
475 | end_ptr++; /* skip white space */ | |
476 | end_value = get_number (temp); | |
477 | if (end_value < last_retval) | |
478 | { | |
479 | error ("inverted range"); | |
480 | } | |
481 | else if (end_value == last_retval) | |
482 | { | |
483 | /* degenerate range (number1 == number2). Advance the | |
484 | token pointer so that the range will be treated as a | |
485 | single number. */ | |
486 | *pp = end_ptr; | |
487 | } | |
488 | else | |
489 | in_range = 1; | |
490 | } | |
491 | } | |
492 | else if (! in_range) | |
493 | error ("negative value"); | |
494 | else | |
495 | { | |
496 | /* pp points to the '-' that betokens a range. All | |
497 | number-parsing has already been done. Return the next | |
498 | integer value (one greater than the saved previous value). | |
499 | Do not advance the token pointer 'pp' until the end of range | |
500 | is reached. */ | |
501 | ||
502 | if (++last_retval == end_value) | |
503 | { | |
504 | /* End of range reached; advance token pointer. */ | |
505 | *pp = end_ptr; | |
506 | in_range = 0; | |
507 | } | |
508 | } | |
509 | return last_retval; | |
510 | } | |
511 | ||
512 | ||
c906108c SS |
513 | \f |
514 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
515 | ||
516 | static void | |
fba45db2 | 517 | condition_command (char *arg, int from_tty) |
c906108c SS |
518 | { |
519 | register struct breakpoint *b; | |
520 | char *p; | |
521 | register int bnum; | |
522 | ||
523 | if (arg == 0) | |
524 | error_no_arg ("breakpoint number"); | |
525 | ||
526 | p = arg; | |
527 | bnum = get_number (&p); | |
5c44784c JM |
528 | if (bnum == 0) |
529 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
530 | |
531 | ALL_BREAKPOINTS (b) | |
532 | if (b->number == bnum) | |
c5aa993b JM |
533 | { |
534 | if (b->cond) | |
535 | { | |
b8c9b27d | 536 | xfree (b->cond); |
c5aa993b JM |
537 | b->cond = 0; |
538 | } | |
539 | if (b->cond_string != NULL) | |
b8c9b27d | 540 | xfree (b->cond_string); |
c906108c | 541 | |
c5aa993b JM |
542 | if (*p == 0) |
543 | { | |
544 | b->cond = 0; | |
545 | b->cond_string = NULL; | |
546 | if (from_tty) | |
547 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
548 | } | |
549 | else | |
550 | { | |
551 | arg = p; | |
552 | /* I don't know if it matters whether this is the string the user | |
553 | typed in or the decompiled expression. */ | |
554 | b->cond_string = savestring (arg, strlen (arg)); | |
555 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); | |
556 | if (*arg) | |
557 | error ("Junk at end of expression"); | |
558 | } | |
559 | breakpoints_changed (); | |
221ea385 | 560 | breakpoint_modify_event (b->number); |
c5aa993b JM |
561 | return; |
562 | } | |
c906108c SS |
563 | |
564 | error ("No breakpoint number %d.", bnum); | |
565 | } | |
566 | ||
567 | /* ARGSUSED */ | |
568 | static void | |
fba45db2 | 569 | commands_command (char *arg, int from_tty) |
c906108c SS |
570 | { |
571 | register struct breakpoint *b; | |
572 | char *p; | |
573 | register int bnum; | |
574 | struct command_line *l; | |
575 | ||
576 | /* If we allowed this, we would have problems with when to | |
577 | free the storage, if we change the commands currently | |
578 | being read from. */ | |
579 | ||
580 | if (executing_breakpoint_commands) | |
581 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
582 | ||
583 | p = arg; | |
584 | bnum = get_number (&p); | |
5c44784c | 585 | |
c906108c SS |
586 | if (p && *p) |
587 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 588 | |
c906108c SS |
589 | ALL_BREAKPOINTS (b) |
590 | if (b->number == bnum) | |
c5aa993b JM |
591 | { |
592 | char tmpbuf[128]; | |
53a5351d JM |
593 | sprintf (tmpbuf, |
594 | "Type commands for when breakpoint %d is hit, one per line.", | |
595 | bnum); | |
c5aa993b JM |
596 | l = read_command_lines (tmpbuf, from_tty); |
597 | free_command_lines (&b->commands); | |
598 | b->commands = l; | |
599 | breakpoints_changed (); | |
221ea385 | 600 | breakpoint_modify_event (b->number); |
c5aa993b JM |
601 | return; |
602 | } | |
c906108c SS |
603 | error ("No breakpoint number %d.", bnum); |
604 | } | |
605 | \f | |
606 | /* Like target_read_memory() but if breakpoints are inserted, return | |
607 | the shadow contents instead of the breakpoints themselves. | |
608 | ||
609 | Read "memory data" from whatever target or inferior we have. | |
610 | Returns zero if successful, errno value if not. EIO is used | |
611 | for address out of bounds. If breakpoints are inserted, returns | |
612 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
613 | ||
614 | int | |
fba45db2 | 615 | read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
616 | { |
617 | int status; | |
618 | struct breakpoint *b; | |
619 | CORE_ADDR bp_addr = 0; | |
620 | int bp_size = 0; | |
621 | ||
622 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
623 | /* No breakpoints on this machine. */ | |
624 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 625 | |
c906108c | 626 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
627 | { |
628 | if (b->type == bp_none) | |
53a5351d JM |
629 | warning ("reading through apparently deleted breakpoint #%d?", |
630 | b->number); | |
c5aa993b JM |
631 | |
632 | /* memory breakpoint? */ | |
633 | if (b->type == bp_watchpoint | |
634 | || b->type == bp_hardware_watchpoint | |
635 | || b->type == bp_read_watchpoint | |
636 | || b->type == bp_access_watchpoint) | |
637 | continue; | |
638 | /* bp in memory? */ | |
639 | if (!b->inserted) | |
640 | continue; | |
641 | /* Addresses and length of the part of the breakpoint that | |
642 | we need to copy. */ | |
643 | /* XXXX The m68k, sh and h8300 have different local and remote | |
644 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
645 | correctly determine the breakpoints memory address and size | |
646 | for these targets. */ | |
647 | bp_addr = b->address; | |
648 | bp_size = 0; | |
649 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
650 | continue; | |
651 | if (bp_size == 0) | |
652 | /* bp isn't valid */ | |
653 | continue; | |
654 | if (bp_addr + bp_size <= memaddr) | |
655 | /* The breakpoint is entirely before the chunk of memory we | |
656 | are reading. */ | |
657 | continue; | |
658 | if (bp_addr >= memaddr + len) | |
659 | /* The breakpoint is entirely after the chunk of memory we are | |
660 | reading. */ | |
661 | continue; | |
662 | /* Copy the breakpoint from the shadow contents, and recurse for | |
663 | the things before and after. */ | |
c906108c | 664 | { |
c5aa993b JM |
665 | /* Offset within shadow_contents. */ |
666 | int bptoffset = 0; | |
c906108c | 667 | |
c5aa993b JM |
668 | if (bp_addr < memaddr) |
669 | { | |
670 | /* Only copy the second part of the breakpoint. */ | |
671 | bp_size -= memaddr - bp_addr; | |
672 | bptoffset = memaddr - bp_addr; | |
673 | bp_addr = memaddr; | |
674 | } | |
675 | ||
676 | if (bp_addr + bp_size > memaddr + len) | |
677 | { | |
678 | /* Only copy the first part of the breakpoint. */ | |
679 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
680 | } | |
681 | ||
682 | memcpy (myaddr + bp_addr - memaddr, | |
683 | b->shadow_contents + bptoffset, bp_size); | |
684 | ||
685 | if (bp_addr > memaddr) | |
686 | { | |
687 | /* Copy the section of memory before the breakpoint. */ | |
688 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
689 | if (status != 0) | |
690 | return status; | |
691 | } | |
692 | ||
693 | if (bp_addr + bp_size < memaddr + len) | |
694 | { | |
695 | /* Copy the section of memory after the breakpoint. */ | |
d85310f7 MS |
696 | status = read_memory_nobpt (bp_addr + bp_size, |
697 | myaddr + bp_addr + bp_size - memaddr, | |
698 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
699 | if (status != 0) |
700 | return status; | |
701 | } | |
702 | return 0; | |
c906108c | 703 | } |
c5aa993b | 704 | } |
c906108c SS |
705 | /* Nothing overlaps. Just call read_memory_noerr. */ |
706 | return target_read_memory (memaddr, myaddr, len); | |
707 | } | |
c906108c | 708 | \f |
c5aa993b | 709 | |
c906108c SS |
710 | /* insert_breakpoints is used when starting or continuing the program. |
711 | remove_breakpoints is used when the program stops. | |
712 | Both return zero if successful, | |
713 | or an `errno' value if could not write the inferior. */ | |
714 | ||
715 | int | |
fba45db2 | 716 | insert_breakpoints (void) |
c906108c SS |
717 | { |
718 | register struct breakpoint *b, *temp; | |
53a5351d | 719 | int return_val = 0; /* return success code. */ |
c906108c SS |
720 | int val = 0; |
721 | int disabled_breaks = 0; | |
81d0cc19 | 722 | int hw_breakpoint_error = 0; |
c6510018 | 723 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 724 | int process_warning = 0; |
c6510018 | 725 | #endif |
c906108c SS |
726 | |
727 | static char message1[] = "Error inserting catchpoint %d:\n"; | |
728 | static char message[sizeof (message1) + 30]; | |
729 | ||
81d0cc19 GS |
730 | struct ui_file *tmp_error_stream = mem_fileopen (); |
731 | make_cleanup_ui_file_delete (tmp_error_stream); | |
732 | ||
733 | /* Explicitly mark the warning -- this will only be printed if | |
734 | there was an error. */ | |
735 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c SS |
736 | |
737 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 738 | { |
a881cf8e DJ |
739 | /* Permanent breakpoints cannot be inserted or removed. Disabled |
740 | breakpoints should not be inserted. */ | |
741 | if (b->enable_state != bp_enabled) | |
c2c6d25f | 742 | continue; |
a881cf8e | 743 | |
c860120c PM |
744 | if ((b->type == bp_watchpoint |
745 | || b->type == bp_hardware_watchpoint | |
746 | || b->type == bp_read_watchpoint | |
747 | || b->type == bp_access_watchpoint) && (!b->val)) | |
748 | { | |
749 | struct value *val; | |
750 | val = evaluate_expression (b->exp); | |
751 | release_value (val); | |
752 | if (VALUE_LAZY (val)) | |
753 | value_fetch_lazy (val); | |
754 | b->val = val; | |
755 | } | |
756 | if (b->type != bp_watchpoint | |
c5aa993b JM |
757 | && b->type != bp_hardware_watchpoint |
758 | && b->type != bp_read_watchpoint | |
759 | && b->type != bp_access_watchpoint | |
760 | && b->type != bp_catch_fork | |
761 | && b->type != bp_catch_vfork | |
762 | && b->type != bp_catch_exec | |
763 | && b->type != bp_catch_throw | |
764 | && b->type != bp_catch_catch | |
c5aa993b JM |
765 | && !b->inserted |
766 | && !b->duplicate) | |
767 | { | |
c02f5703 MS |
768 | /* "Normal" instruction breakpoint: either the standard |
769 | trap-instruction bp (bp_breakpoint), or a | |
770 | bp_hardware_breakpoint. */ | |
771 | ||
772 | /* First check to see if we have to handle an overlay. */ | |
773 | if (overlay_debugging == ovly_off | |
774 | || b->section == NULL | |
775 | || !(section_is_overlay (b->section))) | |
776 | { | |
777 | /* No overlay handling: just set the breakpoint. */ | |
778 | ||
779 | if (b->type == bp_hardware_breakpoint) | |
780 | val = target_insert_hw_breakpoint (b->address, | |
781 | b->shadow_contents); | |
782 | else | |
783 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
784 | } | |
c5aa993b JM |
785 | else |
786 | { | |
c02f5703 MS |
787 | /* This breakpoint is in an overlay section. |
788 | Shall we set a breakpoint at the LMA? */ | |
789 | if (!overlay_events_enabled) | |
790 | { | |
791 | /* Yes -- overlay event support is not active, | |
792 | so we must try to set a breakpoint at the LMA. | |
793 | This will not work for a hardware breakpoint. */ | |
794 | if (b->type == bp_hardware_breakpoint) | |
84d2ac95 | 795 | warning ("hardware breakpoint %d not supported in overlay!\n", |
c02f5703 MS |
796 | b->number); |
797 | else | |
798 | { | |
799 | CORE_ADDR addr = overlay_unmapped_address (b->address, | |
800 | b->section); | |
801 | /* Set a software (trap) breakpoint at the LMA. */ | |
802 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
803 | if (val != 0) | |
81d0cc19 GS |
804 | fprintf_unfiltered (tmp_error_stream, |
805 | "Overlay breakpoint %d failed: in ROM?", | |
806 | b->number); | |
c02f5703 MS |
807 | } |
808 | } | |
809 | /* Shall we set a breakpoint at the VMA? */ | |
810 | if (section_is_mapped (b->section)) | |
c5aa993b | 811 | { |
c02f5703 MS |
812 | /* Yes. This overlay section is mapped into memory. */ |
813 | if (b->type == bp_hardware_breakpoint) | |
814 | val = target_insert_hw_breakpoint (b->address, | |
815 | b->shadow_contents); | |
816 | else | |
c5aa993b JM |
817 | val = target_insert_breakpoint (b->address, |
818 | b->shadow_contents); | |
819 | } | |
c02f5703 MS |
820 | else |
821 | { | |
822 | /* No. This breakpoint will not be inserted. | |
823 | No error, but do not mark the bp as 'inserted'. */ | |
824 | continue; | |
825 | } | |
c5aa993b | 826 | } |
c02f5703 | 827 | |
c5aa993b JM |
828 | if (val) |
829 | { | |
830 | /* Can't set the breakpoint. */ | |
c906108c | 831 | #if defined (DISABLE_UNSETTABLE_BREAK) |
c5aa993b JM |
832 | if (DISABLE_UNSETTABLE_BREAK (b->address)) |
833 | { | |
834 | /* See also: disable_breakpoints_in_shlibs. */ | |
835 | val = 0; | |
b5de0fa7 | 836 | b->enable_state = bp_shlib_disabled; |
c5aa993b JM |
837 | if (!disabled_breaks) |
838 | { | |
81d0cc19 | 839 | fprintf_unfiltered (tmp_error_stream, |
c6510018 MS |
840 | "Cannot insert breakpoint %d.\n", |
841 | b->number); | |
81d0cc19 GS |
842 | fprintf_unfiltered (tmp_error_stream, |
843 | "Temporarily disabling shared library breakpoints:\n"); | |
c5aa993b JM |
844 | } |
845 | disabled_breaks = 1; | |
c6510018 MS |
846 | fprintf_unfiltered (tmp_error_stream, |
847 | "breakpoint #%d\n", b->number); | |
c5aa993b JM |
848 | } |
849 | else | |
c906108c | 850 | #endif |
c5aa993b | 851 | { |
c6510018 | 852 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 853 | process_warning = 1; |
c6510018 | 854 | #endif |
81d0cc19 GS |
855 | if (b->type == bp_hardware_breakpoint) |
856 | { | |
857 | hw_breakpoint_error = 1; | |
858 | fprintf_unfiltered (tmp_error_stream, | |
859 | "Cannot insert hardware breakpoint %d.\n", | |
860 | b->number); | |
861 | } | |
862 | else | |
863 | { | |
c6510018 MS |
864 | fprintf_unfiltered (tmp_error_stream, |
865 | "Cannot insert breakpoint %d.\n", | |
866 | b->number); | |
867 | fprintf_filtered (tmp_error_stream, | |
868 | "Error accessing memory address "); | |
81d0cc19 GS |
869 | print_address_numeric (b->address, 1, tmp_error_stream); |
870 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
871 | safe_strerror (val)); | |
872 | } | |
873 | ||
c5aa993b JM |
874 | } |
875 | } | |
876 | else | |
877 | b->inserted = 1; | |
53a5351d JM |
878 | |
879 | if (val) | |
880 | return_val = val; /* remember failure */ | |
c5aa993b | 881 | } |
c906108c | 882 | else if (ep_is_exception_catchpoint (b) |
c5aa993b JM |
883 | && !b->inserted |
884 | && !b->duplicate) | |
c906108c SS |
885 | |
886 | { | |
c5aa993b JM |
887 | /* If we get here, we must have a callback mechanism for exception |
888 | events -- with g++ style embedded label support, we insert | |
889 | ordinary breakpoints and not catchpoints. */ | |
53a5351d JM |
890 | /* Format possible error message */ |
891 | sprintf (message, message1, b->number); | |
c5aa993b JM |
892 | |
893 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
894 | if (val) | |
895 | { | |
896 | /* Couldn't set breakpoint for some reason */ | |
81d0cc19 GS |
897 | fprintf_unfiltered (tmp_error_stream, |
898 | "Cannot insert catchpoint %d; disabling it.\n", | |
899 | b->number); | |
c6510018 MS |
900 | fprintf_filtered (tmp_error_stream, |
901 | "Error accessing memory address "); | |
81d0cc19 GS |
902 | print_address_numeric (b->address, 1, tmp_error_stream); |
903 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
904 | safe_strerror (val)); | |
b5de0fa7 | 905 | b->enable_state = bp_disabled; |
c5aa993b JM |
906 | } |
907 | else | |
908 | { | |
909 | /* Bp set, now make sure callbacks are enabled */ | |
c906108c | 910 | int val; |
c5aa993b | 911 | args_for_catchpoint_enable args; |
53a5351d JM |
912 | args.kind = b->type == bp_catch_catch ? |
913 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 914 | args.enable_p = 1; |
c906108c SS |
915 | val = catch_errors (cover_target_enable_exception_callback, |
916 | &args, | |
917 | message, RETURN_MASK_ALL); | |
918 | if (val != 0 && val != -1) | |
919 | { | |
920 | b->inserted = 1; | |
921 | } | |
c5aa993b | 922 | /* Check if something went wrong; val == 0 can be ignored */ |
c906108c SS |
923 | if (val == -1) |
924 | { | |
c5aa993b | 925 | /* something went wrong */ |
81d0cc19 GS |
926 | fprintf_unfiltered (tmp_error_stream, |
927 | "Cannot insert catchpoint %d; disabling it.\n", | |
928 | b->number); | |
b5de0fa7 | 929 | b->enable_state = bp_disabled; |
c906108c | 930 | } |
c5aa993b | 931 | } |
53a5351d JM |
932 | |
933 | if (val) | |
934 | return_val = val; /* remember failure */ | |
c906108c SS |
935 | } |
936 | ||
c5aa993b JM |
937 | else if ((b->type == bp_hardware_watchpoint || |
938 | b->type == bp_read_watchpoint || | |
939 | b->type == bp_access_watchpoint) | |
b5de0fa7 | 940 | && b->disposition != disp_del_at_next_stop |
c5aa993b JM |
941 | && !b->inserted |
942 | && !b->duplicate) | |
943 | { | |
944 | struct frame_info *saved_frame; | |
945 | int saved_level, within_current_scope; | |
278cd55f AC |
946 | struct value *mark = value_mark (); |
947 | struct value *v; | |
c5aa993b JM |
948 | |
949 | /* Save the current frame and level so we can restore it after | |
950 | evaluating the watchpoint expression on its own frame. */ | |
6e7f8b9c AC |
951 | saved_frame = deprecated_selected_frame; |
952 | saved_level = frame_relative_level (deprecated_selected_frame); | |
c5aa993b JM |
953 | |
954 | /* Determine if the watchpoint is within scope. */ | |
955 | if (b->exp_valid_block == NULL) | |
956 | within_current_scope = 1; | |
957 | else | |
958 | { | |
959 | struct frame_info *fi; | |
101dcfbe | 960 | fi = frame_find_by_id (b->watchpoint_frame); |
c5aa993b JM |
961 | within_current_scope = (fi != NULL); |
962 | if (within_current_scope) | |
0f7d239c | 963 | select_frame (fi); |
c5aa993b JM |
964 | } |
965 | ||
966 | if (within_current_scope) | |
967 | { | |
968 | /* Evaluate the expression and cut the chain of values | |
5c44784c JM |
969 | produced off from the value chain. |
970 | ||
971 | Make sure the value returned isn't lazy; we use | |
972 | laziness to determine what memory GDB actually needed | |
973 | in order to compute the value of the expression. */ | |
c5aa993b | 974 | v = evaluate_expression (b->exp); |
5c44784c | 975 | VALUE_CONTENTS(v); |
c5aa993b JM |
976 | value_release_to_mark (mark); |
977 | ||
978 | b->val_chain = v; | |
979 | b->inserted = 1; | |
980 | ||
981 | /* Look at each value on the value chain. */ | |
982 | for (; v; v = v->next) | |
983 | { | |
5c44784c JM |
984 | /* If it's a memory location, and GDB actually needed |
985 | its contents to evaluate the expression, then we | |
986 | must watch it. */ | |
987 | if (VALUE_LVAL (v) == lval_memory | |
988 | && ! VALUE_LAZY (v)) | |
c5aa993b | 989 | { |
2e70b7b9 MS |
990 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
991 | ||
992 | /* We only watch structs and arrays if user asked | |
993 | for it explicitly, never if they just happen to | |
994 | appear in the middle of some value chain. */ | |
995 | if (v == b->val_chain | |
996 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
997 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
c5aa993b | 998 | { |
2e70b7b9 MS |
999 | CORE_ADDR addr; |
1000 | int len, type; | |
1001 | ||
1002 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1003 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
81d0cc19 | 1004 | type = hw_write; |
2e70b7b9 MS |
1005 | if (b->type == bp_read_watchpoint) |
1006 | type = hw_read; | |
1007 | else if (b->type == bp_access_watchpoint) | |
1008 | type = hw_access; | |
1009 | ||
1010 | val = target_insert_watchpoint (addr, len, type); | |
1011 | if (val == -1) | |
1012 | { | |
1013 | /* Don't exit the loop, try to insert | |
1014 | every value on the value chain. That's | |
1015 | because we will be removing all the | |
1016 | watches below, and removing a | |
1017 | watchpoint we didn't insert could have | |
1018 | adverse effects. */ | |
1019 | b->inserted = 0; | |
1020 | } | |
1021 | val = 0; | |
c5aa993b | 1022 | } |
c5aa993b JM |
1023 | } |
1024 | } | |
1025 | /* Failure to insert a watchpoint on any memory value in the | |
1026 | value chain brings us here. */ | |
1027 | if (!b->inserted) | |
53a5351d JM |
1028 | { |
1029 | remove_breakpoint (b, mark_uninserted); | |
81d0cc19 GS |
1030 | hw_breakpoint_error = 1; |
1031 | fprintf_unfiltered (tmp_error_stream, | |
c6510018 MS |
1032 | "Could not insert hardware watchpoint %d.\n", |
1033 | b->number); | |
53a5351d JM |
1034 | val = -1; |
1035 | } | |
c5aa993b JM |
1036 | } |
1037 | else | |
1038 | { | |
c6902688 | 1039 | printf_filtered ("Hardware watchpoint %d deleted ", b->number); |
53a5351d JM |
1040 | printf_filtered ("because the program has left the block \n"); |
1041 | printf_filtered ("in which its expression is valid.\n"); | |
c5aa993b | 1042 | if (b->related_breakpoint) |
b5de0fa7 EZ |
1043 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
1044 | b->disposition = disp_del_at_next_stop; | |
c5aa993b | 1045 | } |
c906108c | 1046 | |
c5aa993b | 1047 | /* Restore the frame and level. */ |
6e7f8b9c AC |
1048 | if ((saved_frame != deprecated_selected_frame) || |
1049 | (saved_level != frame_relative_level (deprecated_selected_frame))) | |
0f7d239c | 1050 | select_frame (saved_frame); |
53a5351d JM |
1051 | |
1052 | if (val) | |
1053 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1054 | } |
1055 | else if ((b->type == bp_catch_fork | |
1056 | || b->type == bp_catch_vfork | |
1057 | || b->type == bp_catch_exec) | |
c5aa993b JM |
1058 | && !b->inserted |
1059 | && !b->duplicate) | |
1060 | { | |
1061 | val = -1; | |
1062 | switch (b->type) | |
1063 | { | |
1064 | case bp_catch_fork: | |
39f77062 | 1065 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1066 | break; |
1067 | case bp_catch_vfork: | |
39f77062 | 1068 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1069 | break; |
1070 | case bp_catch_exec: | |
39f77062 | 1071 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1072 | break; |
1073 | default: | |
53a5351d | 1074 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
c5aa993b JM |
1075 | break; |
1076 | } | |
1077 | if (val < 0) | |
1078 | { | |
c6510018 MS |
1079 | fprintf_unfiltered (tmp_error_stream, |
1080 | "Cannot insert catchpoint %d.", b->number); | |
c5aa993b JM |
1081 | } |
1082 | else | |
1083 | b->inserted = 1; | |
53a5351d JM |
1084 | |
1085 | if (val) | |
1086 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1087 | } |
1088 | } | |
81d0cc19 GS |
1089 | |
1090 | if (return_val) | |
1091 | { | |
1092 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1093 | message about possibly exhausted resources. */ | |
1094 | if (hw_breakpoint_error) | |
1095 | { | |
c6510018 MS |
1096 | fprintf_unfiltered (tmp_error_stream, |
1097 | "Could not insert hardware breakpoints:\n\ | |
1098 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1099 | } |
c6510018 | 1100 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1101 | if (process_warning) |
c6510018 MS |
1102 | fprintf_unfiltered (tmp_error_stream, |
1103 | "The same program may be running in another process."); | |
1104 | #endif | |
81d0cc19 GS |
1105 | target_terminal_ours_for_output (); |
1106 | error_stream (tmp_error_stream); | |
1107 | } | |
53a5351d | 1108 | return return_val; |
c906108c SS |
1109 | } |
1110 | ||
c906108c | 1111 | int |
fba45db2 | 1112 | remove_breakpoints (void) |
c906108c SS |
1113 | { |
1114 | register struct breakpoint *b; | |
1115 | int val; | |
1116 | ||
1117 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
1118 | { |
1119 | if (b->inserted) | |
1120 | { | |
1121 | val = remove_breakpoint (b, mark_uninserted); | |
1122 | if (val != 0) | |
1123 | return val; | |
1124 | } | |
1125 | } | |
c906108c SS |
1126 | return 0; |
1127 | } | |
1128 | ||
692590c1 | 1129 | int |
80ce1ecb | 1130 | remove_hw_watchpoints (void) |
692590c1 MS |
1131 | { |
1132 | register struct breakpoint *b; | |
1133 | int val; | |
1134 | ||
1135 | ALL_BREAKPOINTS (b) | |
1136 | { | |
1137 | if (b->inserted | |
1138 | && (b->type == bp_hardware_watchpoint | |
1139 | || b->type == bp_read_watchpoint | |
1140 | || b->type == bp_access_watchpoint)) | |
1141 | { | |
1142 | val = remove_breakpoint (b, mark_uninserted); | |
1143 | if (val != 0) | |
1144 | return val; | |
1145 | } | |
1146 | } | |
1147 | return 0; | |
1148 | } | |
1149 | ||
c906108c | 1150 | int |
fba45db2 | 1151 | reattach_breakpoints (int pid) |
c906108c SS |
1152 | { |
1153 | register struct breakpoint *b; | |
1154 | int val; | |
ce696e05 | 1155 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1156 | |
ce696e05 KB |
1157 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1158 | inferior_ptid = pid_to_ptid (pid); | |
c906108c | 1159 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1160 | { |
1161 | if (b->inserted) | |
1162 | { | |
1163 | remove_breakpoint (b, mark_inserted); | |
1164 | if (b->type == bp_hardware_breakpoint) | |
1165 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
1166 | else | |
1167 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
1168 | if (val != 0) | |
1169 | { | |
ce696e05 | 1170 | do_cleanups (old_chain); |
c5aa993b JM |
1171 | return val; |
1172 | } | |
1173 | } | |
1174 | } | |
ce696e05 | 1175 | do_cleanups (old_chain); |
c906108c SS |
1176 | return 0; |
1177 | } | |
1178 | ||
1179 | void | |
fba45db2 | 1180 | update_breakpoints_after_exec (void) |
c906108c | 1181 | { |
c5aa993b JM |
1182 | struct breakpoint *b; |
1183 | struct breakpoint *temp; | |
c906108c SS |
1184 | |
1185 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1186 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1187 | shadow is NOT valid after an exec()! */ | |
1188 | mark_breakpoints_out (); | |
1189 | ||
1190 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1191 | { |
1192 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1193 | if (b->type == bp_shlib_event) | |
1194 | { | |
1195 | delete_breakpoint (b); | |
1196 | continue; | |
1197 | } | |
c906108c | 1198 | |
1900040c MS |
1199 | /* Thread event breakpoints must be set anew after an exec(), |
1200 | as must overlay event breakpoints. */ | |
1201 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1202 | { |
1203 | delete_breakpoint (b); | |
1204 | continue; | |
1205 | } | |
1206 | ||
c5aa993b JM |
1207 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1208 | if (b->type == bp_step_resume) | |
1209 | { | |
1210 | delete_breakpoint (b); | |
1211 | continue; | |
1212 | } | |
1213 | ||
1214 | /* Ditto the sigtramp handler breakpoints. */ | |
1215 | if (b->type == bp_through_sigtramp) | |
1216 | { | |
1217 | delete_breakpoint (b); | |
1218 | continue; | |
1219 | } | |
1220 | ||
1221 | /* Ditto the exception-handling catchpoints. */ | |
1222 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1223 | { | |
1224 | delete_breakpoint (b); | |
1225 | continue; | |
1226 | } | |
1227 | ||
1228 | /* Don't delete an exec catchpoint, because else the inferior | |
1229 | won't stop when it ought! | |
1230 | ||
1231 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1232 | on this target, we may not be able to stop when the vfork is |
1233 | seen, but only when the subsequent exec is seen. (And because | |
1234 | deleting fork catchpoints here but not vfork catchpoints will | |
1235 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1236 | |
1237 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1238 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1239 | automagically. Certainly on HP-UX that's true. |
1240 | ||
1241 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
67f16606 AC |
1242 | valid code address on some platforms (like the OBSOLETE mn10200 |
1243 | and mn10300 simulators). We shouldn't assign any special | |
644a1fe1 JB |
1244 | interpretation to a breakpoint with a zero address. And in |
1245 | fact, GDB doesn't --- I can't see what that comment above is | |
1246 | talking about. As far as I can tell, setting the address of a | |
1247 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero | |
1248 | is meaningless, since those are implemented with HP-UX kernel | |
1249 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1250 | if ((b->type == bp_catch_exec) || |
1251 | (b->type == bp_catch_vfork) || | |
1252 | (b->type == bp_catch_fork)) | |
1253 | { | |
1254 | b->address = (CORE_ADDR) NULL; | |
1255 | continue; | |
1256 | } | |
1257 | ||
1258 | /* bp_finish is a special case. The only way we ought to be able | |
1259 | to see one of these when an exec() has happened, is if the user | |
1260 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1261 | carries them to the call-site of the current callee, by setting | |
1262 | a temporary bp there and resuming. But in this case, the finish | |
1263 | will carry them entirely through the vfork & exec. | |
1264 | ||
1265 | We don't want to allow a bp_finish to remain inserted now. But | |
1266 | we can't safely delete it, 'cause finish_command has a handle to | |
1267 | the bp on a bpstat, and will later want to delete it. There's a | |
1268 | chance (and I've seen it happen) that if we delete the bp_finish | |
1269 | here, that its storage will get reused by the time finish_command | |
1270 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1271 | We really must allow finish_command to delete a bp_finish. | |
1272 | ||
53a5351d JM |
1273 | In the absense of a general solution for the "how do we know |
1274 | it's safe to delete something others may have handles to?" | |
1275 | problem, what we'll do here is just uninsert the bp_finish, and | |
1276 | let finish_command delete it. | |
1277 | ||
1278 | (We know the bp_finish is "doomed" in the sense that it's | |
1279 | momentary, and will be deleted as soon as finish_command sees | |
1280 | the inferior stopped. So it doesn't matter that the bp's | |
1281 | address is probably bogus in the new a.out, unlike e.g., the | |
1282 | solib breakpoints.) */ | |
c5aa993b | 1283 | |
c5aa993b JM |
1284 | if (b->type == bp_finish) |
1285 | { | |
1286 | continue; | |
1287 | } | |
1288 | ||
1289 | /* Without a symbolic address, we have little hope of the | |
1290 | pre-exec() address meaning the same thing in the post-exec() | |
1291 | a.out. */ | |
1292 | if (b->addr_string == NULL) | |
1293 | { | |
1294 | delete_breakpoint (b); | |
1295 | continue; | |
1296 | } | |
1297 | ||
1298 | /* If this breakpoint has survived the above battery of checks, then | |
1299 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1300 | to a target address, rather than reusing the old evaluation. |
1301 | ||
1302 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1303 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1304 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1305 | the breakpoint's address from scratch, or deletes it if it can't. | |
1306 | So I think this assignment could be deleted without effect. */ | |
c5aa993b JM |
1307 | b->address = (CORE_ADDR) NULL; |
1308 | } | |
1900040c MS |
1309 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1310 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1311 | } |
1312 | ||
1313 | int | |
fba45db2 | 1314 | detach_breakpoints (int pid) |
c906108c SS |
1315 | { |
1316 | register struct breakpoint *b; | |
1317 | int val; | |
ce696e05 | 1318 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1319 | |
39f77062 KB |
1320 | if (pid == PIDGET (inferior_ptid)) |
1321 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1322 | |
ce696e05 KB |
1323 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1324 | inferior_ptid = pid_to_ptid (pid); | |
c906108c | 1325 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1326 | { |
1327 | if (b->inserted) | |
1328 | { | |
1329 | val = remove_breakpoint (b, mark_inserted); | |
1330 | if (val != 0) | |
1331 | { | |
ce696e05 | 1332 | do_cleanups (old_chain); |
c5aa993b JM |
1333 | return val; |
1334 | } | |
1335 | } | |
1336 | } | |
ce696e05 | 1337 | do_cleanups (old_chain); |
c906108c SS |
1338 | return 0; |
1339 | } | |
1340 | ||
1341 | static int | |
fba45db2 | 1342 | remove_breakpoint (struct breakpoint *b, insertion_state_t is) |
c906108c SS |
1343 | { |
1344 | int val; | |
c5aa993b | 1345 | |
b5de0fa7 | 1346 | if (b->enable_state == bp_permanent) |
c2c6d25f JM |
1347 | /* Permanent breakpoints cannot be inserted or removed. */ |
1348 | return 0; | |
1349 | ||
c906108c | 1350 | if (b->type == bp_none) |
53a5351d JM |
1351 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
1352 | b->number); | |
c906108c SS |
1353 | |
1354 | if (b->type != bp_watchpoint | |
1355 | && b->type != bp_hardware_watchpoint | |
1356 | && b->type != bp_read_watchpoint | |
1357 | && b->type != bp_access_watchpoint | |
1358 | && b->type != bp_catch_fork | |
1359 | && b->type != bp_catch_vfork | |
1360 | && b->type != bp_catch_exec | |
1361 | && b->type != bp_catch_catch | |
1362 | && b->type != bp_catch_throw) | |
c906108c | 1363 | { |
c02f5703 MS |
1364 | /* "Normal" instruction breakpoint: either the standard |
1365 | trap-instruction bp (bp_breakpoint), or a | |
1366 | bp_hardware_breakpoint. */ | |
1367 | ||
1368 | /* First check to see if we have to handle an overlay. */ | |
1369 | if (overlay_debugging == ovly_off | |
1370 | || b->section == NULL | |
1371 | || !(section_is_overlay (b->section))) | |
1372 | { | |
1373 | /* No overlay handling: just remove the breakpoint. */ | |
1374 | ||
1375 | if (b->type == bp_hardware_breakpoint) | |
1376 | val = target_remove_hw_breakpoint (b->address, | |
1377 | b->shadow_contents); | |
1378 | else | |
1379 | val = target_remove_breakpoint (b->address, b->shadow_contents); | |
1380 | } | |
c906108c SS |
1381 | else |
1382 | { | |
c02f5703 MS |
1383 | /* This breakpoint is in an overlay section. |
1384 | Did we set a breakpoint at the LMA? */ | |
1385 | if (!overlay_events_enabled) | |
1386 | { | |
1387 | /* Yes -- overlay event support is not active, so we | |
1388 | should have set a breakpoint at the LMA. Remove it. | |
1389 | */ | |
1390 | CORE_ADDR addr = overlay_unmapped_address (b->address, | |
1391 | b->section); | |
1392 | /* Ignore any failures: if the LMA is in ROM, we will | |
1393 | have already warned when we failed to insert it. */ | |
1394 | if (b->type != bp_hardware_breakpoint) | |
1395 | target_remove_hw_breakpoint (addr, b->shadow_contents); | |
1396 | else | |
1397 | target_remove_breakpoint (addr, b->shadow_contents); | |
1398 | } | |
1399 | /* Did we set a breakpoint at the VMA? | |
1400 | If so, we will have marked the breakpoint 'inserted'. */ | |
1401 | if (b->inserted) | |
c906108c | 1402 | { |
c02f5703 MS |
1403 | /* Yes -- remove it. Previously we did not bother to |
1404 | remove the breakpoint if the section had been | |
1405 | unmapped, but let's not rely on that being safe. We | |
1406 | don't know what the overlay manager might do. */ | |
1407 | if (b->type == bp_hardware_breakpoint) | |
1408 | val = target_remove_hw_breakpoint (b->address, | |
1409 | b->shadow_contents); | |
1410 | else | |
c5aa993b | 1411 | val = target_remove_breakpoint (b->address, |
c906108c SS |
1412 | b->shadow_contents); |
1413 | } | |
c02f5703 MS |
1414 | else |
1415 | { | |
1416 | /* No -- not inserted, so no need to remove. No error. */ | |
1417 | val = 0; | |
1418 | } | |
c906108c SS |
1419 | } |
1420 | if (val) | |
1421 | return val; | |
1422 | b->inserted = (is == mark_inserted); | |
1423 | } | |
1424 | else if ((b->type == bp_hardware_watchpoint || | |
c5aa993b JM |
1425 | b->type == bp_read_watchpoint || |
1426 | b->type == bp_access_watchpoint) | |
b5de0fa7 | 1427 | && b->enable_state == bp_enabled |
c5aa993b | 1428 | && !b->duplicate) |
c906108c | 1429 | { |
278cd55f AC |
1430 | struct value *v; |
1431 | struct value *n; | |
c5aa993b | 1432 | |
c906108c SS |
1433 | b->inserted = (is == mark_inserted); |
1434 | /* Walk down the saved value chain. */ | |
1435 | for (v = b->val_chain; v; v = v->next) | |
1436 | { | |
1437 | /* For each memory reference remove the watchpoint | |
1438 | at that address. */ | |
5c44784c JM |
1439 | if (VALUE_LVAL (v) == lval_memory |
1440 | && ! VALUE_LAZY (v)) | |
c906108c | 1441 | { |
2e70b7b9 MS |
1442 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1443 | ||
1444 | if (v == b->val_chain | |
1445 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
1446 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1447 | { | |
1448 | CORE_ADDR addr; | |
1449 | int len, type; | |
1450 | ||
1451 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1452 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1453 | type = hw_write; | |
1454 | if (b->type == bp_read_watchpoint) | |
1455 | type = hw_read; | |
1456 | else if (b->type == bp_access_watchpoint) | |
1457 | type = hw_access; | |
1458 | ||
1459 | val = target_remove_watchpoint (addr, len, type); | |
1460 | if (val == -1) | |
1461 | b->inserted = 1; | |
1462 | val = 0; | |
1463 | } | |
c906108c SS |
1464 | } |
1465 | } | |
1466 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
1467 | if ((is == mark_uninserted) && (b->inserted)) | |
53a5351d | 1468 | warning ("Could not remove hardware watchpoint %d.", |
c906108c | 1469 | b->number); |
c5aa993b | 1470 | |
c906108c | 1471 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1472 | the next time the watchpoint is inserted. */ |
c906108c SS |
1473 | for (v = b->val_chain; v; v = n) |
1474 | { | |
1475 | n = v->next; | |
1476 | value_free (v); | |
1477 | } | |
1478 | b->val_chain = NULL; | |
1479 | } | |
1480 | else if ((b->type == bp_catch_fork || | |
c5aa993b JM |
1481 | b->type == bp_catch_vfork || |
1482 | b->type == bp_catch_exec) | |
b5de0fa7 | 1483 | && b->enable_state == bp_enabled |
c5aa993b | 1484 | && !b->duplicate) |
c906108c SS |
1485 | { |
1486 | val = -1; | |
1487 | switch (b->type) | |
c5aa993b JM |
1488 | { |
1489 | case bp_catch_fork: | |
39f77062 | 1490 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1491 | break; |
1492 | case bp_catch_vfork: | |
39f77062 | 1493 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1494 | break; |
1495 | case bp_catch_exec: | |
39f77062 | 1496 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1497 | break; |
ac9a91a7 | 1498 | default: |
53a5351d | 1499 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1500 | break; |
c5aa993b | 1501 | } |
c906108c SS |
1502 | if (val) |
1503 | return val; | |
1504 | b->inserted = (is == mark_inserted); | |
1505 | } | |
1506 | else if ((b->type == bp_catch_catch || | |
c5aa993b | 1507 | b->type == bp_catch_throw) |
b5de0fa7 | 1508 | && b->enable_state == bp_enabled |
c5aa993b | 1509 | && !b->duplicate) |
c906108c SS |
1510 | { |
1511 | ||
c5aa993b | 1512 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1513 | if (val) |
c5aa993b | 1514 | return val; |
c906108c SS |
1515 | b->inserted = (is == mark_inserted); |
1516 | } | |
1517 | else if (ep_is_exception_catchpoint (b) | |
c5aa993b | 1518 | && b->inserted /* sometimes previous insert doesn't happen */ |
b5de0fa7 | 1519 | && b->enable_state == bp_enabled |
c5aa993b | 1520 | && !b->duplicate) |
c906108c SS |
1521 | { |
1522 | ||
c5aa993b | 1523 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1524 | if (val) |
c5aa993b JM |
1525 | return val; |
1526 | ||
c906108c SS |
1527 | b->inserted = (is == mark_inserted); |
1528 | } | |
1529 | ||
1530 | return 0; | |
1531 | } | |
1532 | ||
1533 | /* Clear the "inserted" flag in all breakpoints. */ | |
1534 | ||
1535 | void | |
fba45db2 | 1536 | mark_breakpoints_out (void) |
c906108c SS |
1537 | { |
1538 | register struct breakpoint *b; | |
1539 | ||
1540 | ALL_BREAKPOINTS (b) | |
1541 | b->inserted = 0; | |
1542 | } | |
1543 | ||
53a5351d JM |
1544 | /* Clear the "inserted" flag in all breakpoints and delete any |
1545 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1546 | |
1547 | Plus other such housekeeping that has to be done for breakpoints | |
1548 | between runs. | |
1549 | ||
53a5351d JM |
1550 | Note: this function gets called at the end of a run (by |
1551 | generic_mourn_inferior) and when a run begins (by | |
1552 | init_wait_for_inferior). */ | |
c906108c SS |
1553 | |
1554 | ||
1555 | ||
1556 | void | |
fba45db2 | 1557 | breakpoint_init_inferior (enum inf_context context) |
c906108c SS |
1558 | { |
1559 | register struct breakpoint *b, *temp; | |
1560 | static int warning_needed = 0; | |
1561 | ||
1562 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1563 | { |
1564 | b->inserted = 0; | |
c906108c | 1565 | |
c5aa993b JM |
1566 | switch (b->type) |
1567 | { | |
1568 | case bp_call_dummy: | |
1569 | case bp_watchpoint_scope: | |
c906108c | 1570 | |
c5aa993b JM |
1571 | /* If the call dummy breakpoint is at the entry point it will |
1572 | cause problems when the inferior is rerun, so we better | |
1573 | get rid of it. | |
c906108c | 1574 | |
c5aa993b JM |
1575 | Also get rid of scope breakpoints. */ |
1576 | delete_breakpoint (b); | |
1577 | break; | |
c906108c | 1578 | |
c5aa993b JM |
1579 | case bp_watchpoint: |
1580 | case bp_hardware_watchpoint: | |
1581 | case bp_read_watchpoint: | |
1582 | case bp_access_watchpoint: | |
c906108c | 1583 | |
c5aa993b JM |
1584 | /* Likewise for watchpoints on local expressions. */ |
1585 | if (b->exp_valid_block != NULL) | |
1586 | delete_breakpoint (b); | |
c860120c PM |
1587 | if (context == inf_starting) |
1588 | { | |
1589 | /* Reset val field to force reread of starting value | |
1590 | in insert_breakpoints. */ | |
1591 | if (b->val) | |
1592 | value_free (b->val); | |
1593 | b->val = NULL; | |
1594 | } | |
c5aa993b JM |
1595 | break; |
1596 | default: | |
1597 | /* Likewise for exception catchpoints in dynamic-linked | |
1598 | executables where required */ | |
1599 | if (ep_is_exception_catchpoint (b) && | |
1600 | exception_catchpoints_are_fragile) | |
1601 | { | |
1602 | warning_needed = 1; | |
c906108c | 1603 | delete_breakpoint (b); |
c5aa993b JM |
1604 | } |
1605 | break; | |
1606 | } | |
1607 | } | |
c906108c SS |
1608 | |
1609 | if (exception_catchpoints_are_fragile) | |
1610 | exception_support_initialized = 0; | |
1611 | ||
c5aa993b | 1612 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1613 | if (warning_needed && (context != inf_exited)) |
1614 | { | |
53a5351d JM |
1615 | warning ("Exception catchpoints from last run were deleted."); |
1616 | warning ("You must reinsert them explicitly."); | |
c906108c | 1617 | warning_needed = 0; |
c5aa993b | 1618 | } |
c906108c SS |
1619 | } |
1620 | ||
c2c6d25f JM |
1621 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1622 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1623 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1624 | permanent breakpoint. | |
1625 | - When continuing from a location with an ordinary breakpoint, we | |
1626 | actually single step once before calling insert_breakpoints. | |
1627 | - When continuing from a localion with a permanent breakpoint, we | |
1628 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1629 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1630 | |
c2c6d25f | 1631 | enum breakpoint_here |
fba45db2 | 1632 | breakpoint_here_p (CORE_ADDR pc) |
c906108c SS |
1633 | { |
1634 | register struct breakpoint *b; | |
c2c6d25f | 1635 | int any_breakpoint_here = 0; |
c906108c SS |
1636 | |
1637 | ALL_BREAKPOINTS (b) | |
b5de0fa7 EZ |
1638 | if ((b->enable_state == bp_enabled |
1639 | || b->enable_state == bp_permanent) | |
c906108c | 1640 | && b->address == pc) /* bp is enabled and matches pc */ |
c2c6d25f | 1641 | { |
9f04af04 MS |
1642 | if (overlay_debugging |
1643 | && section_is_overlay (b->section) | |
1644 | && !section_is_mapped (b->section)) | |
c2c6d25f | 1645 | continue; /* unmapped overlay -- can't be a match */ |
b5de0fa7 | 1646 | else if (b->enable_state == bp_permanent) |
c2c6d25f JM |
1647 | return permanent_breakpoint_here; |
1648 | else | |
1649 | any_breakpoint_here = 1; | |
1650 | } | |
c906108c | 1651 | |
c2c6d25f | 1652 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1653 | } |
1654 | ||
c2c6d25f | 1655 | |
53a5351d JM |
1656 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1657 | but it only returns true if there is actually a breakpoint inserted | |
1658 | at PC. */ | |
c906108c SS |
1659 | |
1660 | int | |
fba45db2 | 1661 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c SS |
1662 | { |
1663 | register struct breakpoint *b; | |
1664 | ||
1665 | ALL_BREAKPOINTS (b) | |
1666 | if (b->inserted | |
1667 | && b->address == pc) /* bp is inserted and matches pc */ | |
c5aa993b | 1668 | { |
9f04af04 MS |
1669 | if (overlay_debugging |
1670 | && section_is_overlay (b->section) | |
1671 | && !section_is_mapped (b->section)) | |
c5aa993b JM |
1672 | continue; /* unmapped overlay -- can't be a match */ |
1673 | else | |
1674 | return 1; | |
1675 | } | |
c906108c SS |
1676 | |
1677 | return 0; | |
1678 | } | |
1679 | ||
53a5351d | 1680 | /* Return nonzero if FRAME is a dummy frame. We can't use |
ae45cd16 AC |
1681 | DEPRECATED_PC_IN_CALL_DUMMY because figuring out the saved SP would |
1682 | take too much time, at least using get_saved_register on the 68k. | |
1683 | This means that for this function to work right a port must use the | |
53a5351d | 1684 | bp_call_dummy breakpoint. */ |
c906108c SS |
1685 | |
1686 | int | |
bf1e52be | 1687 | deprecated_frame_in_dummy (struct frame_info *frame) |
c906108c | 1688 | { |
c906108c SS |
1689 | struct breakpoint *b; |
1690 | ||
c5aa993b | 1691 | if (!CALL_DUMMY_P) |
7a292a7a SS |
1692 | return 0; |
1693 | ||
0225421b | 1694 | /* This function is used by two files: get_frame_type(), after first |
07555a72 AC |
1695 | checking that !DEPRECATED_USE_GENERIC_DUMMY_FRAMES; and |
1696 | sparc-tdep.c, which doesn't yet use generic dummy frames anyway. */ | |
1697 | gdb_assert (!DEPRECATED_USE_GENERIC_DUMMY_FRAMES); | |
c5aa993b | 1698 | |
c906108c | 1699 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1700 | { |
1701 | if (b->type == bp_call_dummy | |
818dd999 | 1702 | && frame_id_eq (b->frame_id, get_frame_id (frame)) |
c5aa993b JM |
1703 | /* We need to check the PC as well as the frame on the sparc, |
1704 | for signals.exp in the testsuite. */ | |
bdd78e62 | 1705 | && (get_frame_pc (frame) |
c5aa993b | 1706 | >= (b->address |
bdd78e62 AC |
1707 | - SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE)) |
1708 | && get_frame_pc (frame) <= b->address) | |
c5aa993b JM |
1709 | return 1; |
1710 | } | |
c906108c SS |
1711 | return 0; |
1712 | } | |
1713 | ||
2c8f79c2 MS |
1714 | /* breakpoint_thread_match (PC, PID) returns true if the breakpoint at |
1715 | PC is valid for process/thread PID. */ | |
c906108c SS |
1716 | |
1717 | int | |
39f77062 | 1718 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c SS |
1719 | { |
1720 | struct breakpoint *b; | |
1721 | int thread; | |
1722 | ||
39f77062 | 1723 | thread = pid_to_thread_id (ptid); |
c906108c SS |
1724 | |
1725 | ALL_BREAKPOINTS (b) | |
b5de0fa7 EZ |
1726 | if (b->enable_state != bp_disabled |
1727 | && b->enable_state != bp_shlib_disabled | |
1728 | && b->enable_state != bp_call_disabled | |
c906108c SS |
1729 | && b->address == pc |
1730 | && (b->thread == -1 || b->thread == thread)) | |
c5aa993b | 1731 | { |
9f04af04 MS |
1732 | if (overlay_debugging |
1733 | && section_is_overlay (b->section) | |
1734 | && !section_is_mapped (b->section)) | |
c5aa993b JM |
1735 | continue; /* unmapped overlay -- can't be a match */ |
1736 | else | |
1737 | return 1; | |
1738 | } | |
c906108c SS |
1739 | |
1740 | return 0; | |
1741 | } | |
c906108c | 1742 | \f |
c5aa993b | 1743 | |
c906108c SS |
1744 | /* bpstat stuff. External routines' interfaces are documented |
1745 | in breakpoint.h. */ | |
1746 | ||
1747 | int | |
fba45db2 | 1748 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1749 | { |
1750 | return | |
1751 | (ep->type == bp_catch_load) | |
1752 | || (ep->type == bp_catch_unload) | |
1753 | || (ep->type == bp_catch_fork) | |
1754 | || (ep->type == bp_catch_vfork) | |
1755 | || (ep->type == bp_catch_exec) | |
1756 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1757 | || (ep->type == bp_catch_throw); |
c906108c | 1758 | |
c5aa993b | 1759 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1760 | } |
c5aa993b | 1761 | |
c906108c | 1762 | int |
fba45db2 | 1763 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1764 | { |
1765 | return | |
1766 | (ep->type == bp_catch_load) | |
d85310f7 | 1767 | || (ep->type == bp_catch_unload); |
c906108c SS |
1768 | } |
1769 | ||
1770 | int | |
fba45db2 | 1771 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1772 | { |
1773 | return | |
1774 | (ep->type == bp_catch_catch) | |
d85310f7 | 1775 | || (ep->type == bp_catch_throw); |
c906108c SS |
1776 | } |
1777 | ||
1778 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1779 | Also free any storage that is part of a bpstat. */ | |
1780 | ||
1781 | void | |
fba45db2 | 1782 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1783 | { |
1784 | bpstat p; | |
1785 | bpstat q; | |
1786 | ||
1787 | if (bsp == 0) | |
1788 | return; | |
1789 | p = *bsp; | |
1790 | while (p != NULL) | |
1791 | { | |
1792 | q = p->next; | |
1793 | if (p->old_val != NULL) | |
1794 | value_free (p->old_val); | |
c2b8ed2c | 1795 | free_command_lines (&p->commands); |
b8c9b27d | 1796 | xfree (p); |
c906108c SS |
1797 | p = q; |
1798 | } | |
1799 | *bsp = NULL; | |
1800 | } | |
1801 | ||
1802 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1803 | is part of the bpstat is copied as well. */ | |
1804 | ||
1805 | bpstat | |
fba45db2 | 1806 | bpstat_copy (bpstat bs) |
c906108c SS |
1807 | { |
1808 | bpstat p = NULL; | |
1809 | bpstat tmp; | |
1810 | bpstat retval = NULL; | |
1811 | ||
1812 | if (bs == NULL) | |
1813 | return bs; | |
1814 | ||
1815 | for (; bs != NULL; bs = bs->next) | |
1816 | { | |
1817 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1818 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1819 | if (bs->commands != NULL) |
1820 | tmp->commands = copy_command_lines (bs->commands); | |
1821 | if (bs->old_val != NULL) | |
1822 | tmp->old_val = value_copy (bs->old_val); | |
1823 | ||
c906108c SS |
1824 | if (p == NULL) |
1825 | /* This is the first thing in the chain. */ | |
1826 | retval = tmp; | |
1827 | else | |
1828 | p->next = tmp; | |
1829 | p = tmp; | |
1830 | } | |
1831 | p->next = NULL; | |
1832 | return retval; | |
1833 | } | |
1834 | ||
1835 | /* Find the bpstat associated with this breakpoint */ | |
1836 | ||
1837 | bpstat | |
fba45db2 | 1838 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1839 | { |
c5aa993b JM |
1840 | if (bsp == NULL) |
1841 | return NULL; | |
c906108c | 1842 | |
c5aa993b JM |
1843 | for (; bsp != NULL; bsp = bsp->next) |
1844 | { | |
1845 | if (bsp->breakpoint_at == breakpoint) | |
1846 | return bsp; | |
1847 | } | |
c906108c SS |
1848 | return NULL; |
1849 | } | |
1850 | ||
1851 | /* Find a step_resume breakpoint associated with this bpstat. | |
1852 | (If there are multiple step_resume bp's on the list, this function | |
1853 | will arbitrarily pick one.) | |
1854 | ||
1855 | It is an error to use this function if BPSTAT doesn't contain a | |
1856 | step_resume breakpoint. | |
1857 | ||
1858 | See wait_for_inferior's use of this function. */ | |
1859 | struct breakpoint * | |
fba45db2 | 1860 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1861 | { |
8601f500 MS |
1862 | int current_thread; |
1863 | ||
c906108c SS |
1864 | if (bsp == NULL) |
1865 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1866 | ||
8601f500 MS |
1867 | current_thread = pid_to_thread_id (inferior_ptid); |
1868 | ||
c906108c SS |
1869 | for (; bsp != NULL; bsp = bsp->next) |
1870 | { | |
1871 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1872 | (bsp->breakpoint_at->type == bp_step_resume) && |
1873 | (bsp->breakpoint_at->thread == current_thread || | |
1874 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1875 | return bsp->breakpoint_at; |
c906108c SS |
1876 | } |
1877 | ||
1878 | error ("Internal error (no step_resume breakpoint found)"); | |
1879 | } | |
1880 | ||
1881 | ||
1882 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1883 | at. *BSP upon return is a bpstat which points to the remaining | |
1884 | breakpoints stopped at (but which is not guaranteed to be good for | |
1885 | anything but further calls to bpstat_num). | |
1886 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1887 | ||
1888 | int | |
fba45db2 | 1889 | bpstat_num (bpstat *bsp) |
c906108c SS |
1890 | { |
1891 | struct breakpoint *b; | |
1892 | ||
1893 | if ((*bsp) == NULL) | |
1894 | return 0; /* No more breakpoint values */ | |
1895 | else | |
1896 | { | |
1897 | b = (*bsp)->breakpoint_at; | |
1898 | *bsp = (*bsp)->next; | |
1899 | if (b == NULL) | |
1900 | return -1; /* breakpoint that's been deleted since */ | |
1901 | else | |
c5aa993b | 1902 | return b->number; /* We have its number */ |
c906108c SS |
1903 | } |
1904 | } | |
1905 | ||
1906 | /* Modify BS so that the actions will not be performed. */ | |
1907 | ||
1908 | void | |
fba45db2 | 1909 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1910 | { |
1911 | for (; bs != NULL; bs = bs->next) | |
1912 | { | |
c2b8ed2c | 1913 | free_command_lines (&bs->commands); |
c906108c SS |
1914 | if (bs->old_val != NULL) |
1915 | { | |
1916 | value_free (bs->old_val); | |
1917 | bs->old_val = NULL; | |
1918 | } | |
1919 | } | |
1920 | } | |
1921 | ||
1922 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1923 | /* ARGSUSED */ | |
1924 | static void | |
4efb68b1 | 1925 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
1926 | { |
1927 | executing_breakpoint_commands = 0; | |
1928 | } | |
1929 | ||
1930 | /* Execute all the commands associated with all the breakpoints at this | |
1931 | location. Any of these commands could cause the process to proceed | |
1932 | beyond this point, etc. We look out for such changes by checking | |
1933 | the global "breakpoint_proceeded" after each command. */ | |
1934 | ||
1935 | void | |
fba45db2 | 1936 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1937 | { |
1938 | bpstat bs; | |
1939 | struct cleanup *old_chain; | |
1940 | struct command_line *cmd; | |
1941 | ||
1942 | /* Avoid endless recursion if a `source' command is contained | |
1943 | in bs->commands. */ | |
1944 | if (executing_breakpoint_commands) | |
1945 | return; | |
1946 | ||
1947 | executing_breakpoint_commands = 1; | |
1948 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1949 | ||
1950 | top: | |
1951 | /* Note that (as of this writing), our callers all appear to | |
1952 | be passing us the address of global stop_bpstat. And, if | |
1953 | our calls to execute_control_command cause the inferior to | |
1954 | proceed, that global (and hence, *bsp) will change. | |
1955 | ||
1956 | We must be careful to not touch *bsp unless the inferior | |
1957 | has not proceeded. */ | |
1958 | ||
1959 | /* This pointer will iterate over the list of bpstat's. */ | |
1960 | bs = *bsp; | |
1961 | ||
1962 | breakpoint_proceeded = 0; | |
1963 | for (; bs != NULL; bs = bs->next) | |
1964 | { | |
1965 | cmd = bs->commands; | |
1966 | while (cmd != NULL) | |
1967 | { | |
1968 | execute_control_command (cmd); | |
1969 | ||
1970 | if (breakpoint_proceeded) | |
1971 | break; | |
1972 | else | |
1973 | cmd = cmd->next; | |
1974 | } | |
1975 | if (breakpoint_proceeded) | |
1976 | /* The inferior is proceeded by the command; bomb out now. | |
1977 | The bpstat chain has been blown away by wait_for_inferior. | |
1978 | But since execution has stopped again, there is a new bpstat | |
1979 | to look at, so start over. */ | |
1980 | goto top; | |
1981 | else | |
c2b8ed2c | 1982 | free_command_lines (&bs->commands); |
c906108c | 1983 | } |
c2b8ed2c | 1984 | do_cleanups (old_chain); |
c906108c SS |
1985 | } |
1986 | ||
e514a9d6 | 1987 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 1988 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
1989 | by having it set different print_it values. |
1990 | ||
1991 | Current scheme: When we stop, bpstat_print() is called. It loops | |
1992 | through the bpstat list of things causing this stop, calling the | |
1993 | print_bp_stop_message function on each one. The behavior of the | |
1994 | print_bp_stop_message function depends on the print_it field of | |
1995 | bpstat. If such field so indicates, call this function here. | |
1996 | ||
1997 | Return values from this routine (ultimately used by bpstat_print() | |
1998 | and normal_stop() to decide what to do): | |
1999 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2000 | don't print anything else. | |
2001 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2002 | that something to be followed by a location. | |
2003 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2004 | that something to be followed by a location. | |
2005 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2006 | analysis. */ | |
c906108c | 2007 | |
917317f4 | 2008 | static enum print_stop_action |
fba45db2 | 2009 | print_it_typical (bpstat bs) |
c906108c | 2010 | { |
3b31d625 | 2011 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2012 | struct ui_stream *stb; |
2013 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2014 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2015 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2016 | which has since been deleted. */ | |
e514a9d6 | 2017 | if (bs->breakpoint_at == NULL) |
917317f4 | 2018 | return PRINT_UNKNOWN; |
c906108c | 2019 | |
e514a9d6 | 2020 | switch (bs->breakpoint_at->type) |
c906108c | 2021 | { |
e514a9d6 JM |
2022 | case bp_breakpoint: |
2023 | case bp_hardware_breakpoint: | |
8b93c638 JM |
2024 | annotate_breakpoint (bs->breakpoint_at->number); |
2025 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2026 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2027 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2028 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2029 | ui_out_text (uiout, ", "); | |
2030 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2031 | break; |
2032 | ||
2033 | case bp_shlib_event: | |
917317f4 JM |
2034 | /* Did we stop because the user set the stop_on_solib_events |
2035 | variable? (If so, we report this as a generic, "Stopped due | |
2036 | to shlib event" message.) */ | |
e514a9d6 JM |
2037 | printf_filtered ("Stopped due to shared library event\n"); |
2038 | return PRINT_NOTHING; | |
2039 | break; | |
2040 | ||
c4093a6a JM |
2041 | case bp_thread_event: |
2042 | /* Not sure how we will get here. | |
2043 | GDB should not stop for these breakpoints. */ | |
2044 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2045 | return PRINT_NOTHING; | |
2046 | break; | |
2047 | ||
1900040c MS |
2048 | case bp_overlay_event: |
2049 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2050 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2051 | return PRINT_NOTHING; | |
2052 | break; | |
2053 | ||
e514a9d6 | 2054 | case bp_catch_load: |
c906108c SS |
2055 | annotate_catchpoint (bs->breakpoint_at->number); |
2056 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2057 | printf_filtered ("loaded"); |
2058 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2059 | return PRINT_SRC_AND_LOC; | |
2060 | break; | |
2061 | ||
2062 | case bp_catch_unload: | |
2063 | annotate_catchpoint (bs->breakpoint_at->number); | |
2064 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2065 | printf_filtered ("unloaded"); | |
2066 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2067 | return PRINT_SRC_AND_LOC; | |
2068 | break; | |
2069 | ||
2070 | case bp_catch_fork: | |
2071 | annotate_catchpoint (bs->breakpoint_at->number); | |
2072 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2073 | printf_filtered ("forked"); | |
53a5351d JM |
2074 | printf_filtered (" process %d), ", |
2075 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2076 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2077 | break; |
2078 | ||
2079 | case bp_catch_vfork: | |
2080 | annotate_catchpoint (bs->breakpoint_at->number); | |
2081 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2082 | printf_filtered ("vforked"); | |
2083 | printf_filtered (" process %d), ", | |
2084 | bs->breakpoint_at->forked_inferior_pid); | |
2085 | return PRINT_SRC_AND_LOC; | |
2086 | break; | |
2087 | ||
2088 | case bp_catch_exec: | |
c906108c SS |
2089 | annotate_catchpoint (bs->breakpoint_at->number); |
2090 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2091 | bs->breakpoint_at->number, |
2092 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2093 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2094 | break; |
2095 | ||
2096 | case bp_catch_catch: | |
53a5351d JM |
2097 | if (current_exception_event && |
2098 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2099 | { |
2100 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2101 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2102 | bs->breakpoint_at->number); | |
c5aa993b JM |
2103 | printf_filtered ("throw location "); |
2104 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2105 | printf_filtered ("%s:%d", | |
2106 | CURRENT_EXCEPTION_THROW_FILE, | |
2107 | CURRENT_EXCEPTION_THROW_LINE); | |
2108 | else | |
2109 | printf_filtered ("unknown"); | |
2110 | ||
2111 | printf_filtered (", catch location "); | |
2112 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2113 | printf_filtered ("%s:%d", | |
2114 | CURRENT_EXCEPTION_CATCH_FILE, | |
2115 | CURRENT_EXCEPTION_CATCH_LINE); | |
2116 | else | |
2117 | printf_filtered ("unknown"); | |
2118 | ||
2119 | printf_filtered ("\n"); | |
e514a9d6 JM |
2120 | /* don't bother to print location frame info */ |
2121 | return PRINT_SRC_ONLY; | |
c5aa993b | 2122 | } |
c906108c | 2123 | else |
c5aa993b | 2124 | { |
e514a9d6 JM |
2125 | /* really throw, some other bpstat will handle it */ |
2126 | return PRINT_UNKNOWN; | |
c5aa993b | 2127 | } |
e514a9d6 JM |
2128 | break; |
2129 | ||
2130 | case bp_catch_throw: | |
53a5351d JM |
2131 | if (current_exception_event && |
2132 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2133 | { |
2134 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2135 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2136 | bs->breakpoint_at->number); | |
c5aa993b JM |
2137 | printf_filtered ("throw location "); |
2138 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2139 | printf_filtered ("%s:%d", | |
2140 | CURRENT_EXCEPTION_THROW_FILE, | |
2141 | CURRENT_EXCEPTION_THROW_LINE); | |
2142 | else | |
2143 | printf_filtered ("unknown"); | |
2144 | ||
2145 | printf_filtered (", catch location "); | |
2146 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2147 | printf_filtered ("%s:%d", | |
2148 | CURRENT_EXCEPTION_CATCH_FILE, | |
2149 | CURRENT_EXCEPTION_CATCH_LINE); | |
2150 | else | |
2151 | printf_filtered ("unknown"); | |
2152 | ||
2153 | printf_filtered ("\n"); | |
e514a9d6 JM |
2154 | /* don't bother to print location frame info */ |
2155 | return PRINT_SRC_ONLY; | |
c5aa993b | 2156 | } |
c906108c | 2157 | else |
c5aa993b | 2158 | { |
e514a9d6 JM |
2159 | /* really catch, some other bpstat will handle it */ |
2160 | return PRINT_UNKNOWN; | |
c5aa993b | 2161 | } |
e514a9d6 | 2162 | break; |
c906108c | 2163 | |
e514a9d6 JM |
2164 | case bp_watchpoint: |
2165 | case bp_hardware_watchpoint: | |
2166 | if (bs->old_val != NULL) | |
2167 | { | |
2168 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2169 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2170 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2171 | mention (bs->breakpoint_at); |
3b31d625 | 2172 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2173 | ui_out_text (uiout, "\nOld value = "); |
2174 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2175 | ui_out_field_stream (uiout, "old", stb); | |
2176 | ui_out_text (uiout, "\nNew value = "); | |
2177 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2178 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2179 | do_cleanups (ui_out_chain); |
8b93c638 | 2180 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2181 | value_free (bs->old_val); |
2182 | bs->old_val = NULL; | |
2183 | } | |
2184 | /* More than one watchpoint may have been triggered. */ | |
2185 | return PRINT_UNKNOWN; | |
2186 | break; | |
2187 | ||
2188 | case bp_read_watchpoint: | |
9dc5e2a9 | 2189 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2190 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); |
8b93c638 | 2191 | mention (bs->breakpoint_at); |
3b31d625 | 2192 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2193 | ui_out_text (uiout, "\nValue = "); |
2194 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2195 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2196 | do_cleanups (ui_out_chain); |
8b93c638 | 2197 | ui_out_text (uiout, "\n"); |
917317f4 | 2198 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2199 | break; |
2200 | ||
2201 | case bp_access_watchpoint: | |
8b93c638 JM |
2202 | if (bs->old_val != NULL) |
2203 | { | |
2204 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2205 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2206 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2207 | mention (bs->breakpoint_at); |
3b31d625 | 2208 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2209 | ui_out_text (uiout, "\nOld value = "); |
2210 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2211 | ui_out_field_stream (uiout, "old", stb); | |
2212 | value_free (bs->old_val); | |
2213 | bs->old_val = NULL; | |
2214 | ui_out_text (uiout, "\nNew value = "); | |
2215 | } | |
2216 | else | |
2217 | { | |
2218 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2219 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2220 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
3b31d625 | 2221 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2222 | ui_out_text (uiout, "\nValue = "); |
2223 | } | |
2224 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2225 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2226 | do_cleanups (ui_out_chain); |
8b93c638 | 2227 | ui_out_text (uiout, "\n"); |
917317f4 | 2228 | return PRINT_UNKNOWN; |
e514a9d6 | 2229 | break; |
4ce44c66 | 2230 | |
e514a9d6 JM |
2231 | /* Fall through, we don't deal with these types of breakpoints |
2232 | here. */ | |
2233 | ||
11cf8741 | 2234 | case bp_finish: |
9dc5e2a9 | 2235 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2236 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2237 | return PRINT_UNKNOWN; |
2238 | break; | |
2239 | ||
e514a9d6 | 2240 | case bp_until: |
9dc5e2a9 | 2241 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2242 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2243 | return PRINT_UNKNOWN; |
2244 | break; | |
2245 | ||
c2d11a7d | 2246 | case bp_none: |
e514a9d6 JM |
2247 | case bp_longjmp: |
2248 | case bp_longjmp_resume: | |
2249 | case bp_step_resume: | |
2250 | case bp_through_sigtramp: | |
2251 | case bp_watchpoint_scope: | |
2252 | case bp_call_dummy: | |
2253 | default: | |
2254 | return PRINT_UNKNOWN; | |
2255 | } | |
2256 | } | |
2257 | ||
2258 | /* Generic routine for printing messages indicating why we | |
2259 | stopped. The behavior of this function depends on the value | |
2260 | 'print_it' in the bpstat structure. Under some circumstances we | |
2261 | may decide not to print anything here and delegate the task to | |
2262 | normal_stop(). */ | |
2263 | ||
2264 | static enum print_stop_action | |
2265 | print_bp_stop_message (bpstat bs) | |
2266 | { | |
2267 | switch (bs->print_it) | |
2268 | { | |
2269 | case print_it_noop: | |
2270 | /* Nothing should be printed for this bpstat entry. */ | |
2271 | return PRINT_UNKNOWN; | |
2272 | break; | |
2273 | ||
2274 | case print_it_done: | |
2275 | /* We still want to print the frame, but we already printed the | |
2276 | relevant messages. */ | |
2277 | return PRINT_SRC_AND_LOC; | |
2278 | break; | |
2279 | ||
2280 | case print_it_normal: | |
2281 | /* Normal case, we handle everything in print_it_typical. */ | |
2282 | return print_it_typical (bs); | |
2283 | break; | |
2284 | default: | |
8e65ff28 AC |
2285 | internal_error (__FILE__, __LINE__, |
2286 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2287 | break; |
c906108c | 2288 | } |
c906108c SS |
2289 | } |
2290 | ||
e514a9d6 JM |
2291 | /* Print a message indicating what happened. This is called from |
2292 | normal_stop(). The input to this routine is the head of the bpstat | |
2293 | list - a list of the eventpoints that caused this stop. This | |
2294 | routine calls the generic print routine for printing a message | |
2295 | about reasons for stopping. This will print (for example) the | |
2296 | "Breakpoint n," part of the output. The return value of this | |
2297 | routine is one of: | |
c906108c | 2298 | |
917317f4 JM |
2299 | PRINT_UNKNOWN: Means we printed nothing |
2300 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2301 | code to print the location. An example is |
2302 | "Breakpoint 1, " which should be followed by | |
2303 | the location. | |
917317f4 | 2304 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2305 | to also print the location part of the message. |
2306 | An example is the catch/throw messages, which | |
917317f4 JM |
2307 | don't require a location appended to the end. |
2308 | PRINT_NOTHING: We have done some printing and we don't need any | |
2309 | further info to be printed.*/ | |
c906108c | 2310 | |
917317f4 | 2311 | enum print_stop_action |
fba45db2 | 2312 | bpstat_print (bpstat bs) |
c906108c SS |
2313 | { |
2314 | int val; | |
c5aa993b | 2315 | |
c906108c | 2316 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2317 | (Currently all watchpoints go on the bpstat whether hit or not. |
2318 | That probably could (should) be changed, provided care is taken | |
c906108c | 2319 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2320 | for (; bs; bs = bs->next) |
2321 | { | |
2322 | val = print_bp_stop_message (bs); | |
2323 | if (val == PRINT_SRC_ONLY | |
2324 | || val == PRINT_SRC_AND_LOC | |
2325 | || val == PRINT_NOTHING) | |
2326 | return val; | |
2327 | } | |
c906108c | 2328 | |
e514a9d6 JM |
2329 | /* We reached the end of the chain, or we got a null BS to start |
2330 | with and nothing was printed. */ | |
917317f4 | 2331 | return PRINT_UNKNOWN; |
c906108c SS |
2332 | } |
2333 | ||
2334 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2335 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2336 | The argument is a "struct expression *" that has been cast to char * to | |
2337 | make it pass through catch_errors. */ | |
2338 | ||
2339 | static int | |
4efb68b1 | 2340 | breakpoint_cond_eval (void *exp) |
c906108c | 2341 | { |
278cd55f | 2342 | struct value *mark = value_mark (); |
c5aa993b | 2343 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2344 | value_free_to_mark (mark); |
2345 | return i; | |
2346 | } | |
2347 | ||
2348 | /* Allocate a new bpstat and chain it to the current one. */ | |
2349 | ||
2350 | static bpstat | |
831662b3 | 2351 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2352 | { |
2353 | bpstat bs; | |
2354 | ||
2355 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2356 | cbs->next = bs; | |
2357 | bs->breakpoint_at = b; | |
2358 | /* If the condition is false, etc., don't do the commands. */ | |
2359 | bs->commands = NULL; | |
2360 | bs->old_val = NULL; | |
2361 | bs->print_it = print_it_normal; | |
2362 | return bs; | |
2363 | } | |
2364 | \f | |
2365 | /* Possible return values for watchpoint_check (this can't be an enum | |
2366 | because of check_errors). */ | |
2367 | /* The watchpoint has been deleted. */ | |
2368 | #define WP_DELETED 1 | |
2369 | /* The value has changed. */ | |
2370 | #define WP_VALUE_CHANGED 2 | |
2371 | /* The value has not changed. */ | |
2372 | #define WP_VALUE_NOT_CHANGED 3 | |
2373 | ||
2374 | #define BP_TEMPFLAG 1 | |
2375 | #define BP_HARDWAREFLAG 2 | |
2376 | ||
2377 | /* Check watchpoint condition. */ | |
2378 | ||
2379 | static int | |
4efb68b1 | 2380 | watchpoint_check (void *p) |
c906108c SS |
2381 | { |
2382 | bpstat bs = (bpstat) p; | |
2383 | struct breakpoint *b; | |
2384 | struct frame_info *fr; | |
2385 | int within_current_scope; | |
2386 | ||
2387 | b = bs->breakpoint_at; | |
2388 | ||
2389 | if (b->exp_valid_block == NULL) | |
2390 | within_current_scope = 1; | |
2391 | else | |
2392 | { | |
2393 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2394 | any chance of handling watchpoints on local variables, we'll need |
2395 | the frame chain (so we can determine if we're in scope). */ | |
2396 | reinit_frame_cache (); | |
101dcfbe | 2397 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2398 | within_current_scope = (fr != NULL); |
c12260ac CV |
2399 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2400 | in the function but the stack frame has already been invalidated. | |
2401 | Since we can't rely on the values of local variables after the | |
2402 | stack has been destroyed, we are treating the watchpoint in that | |
2403 | state as `not changed' without further checking. */ | |
2404 | if (within_current_scope && fr == get_current_frame () | |
2405 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) | |
2406 | return WP_VALUE_NOT_CHANGED; | |
c906108c SS |
2407 | if (within_current_scope) |
2408 | /* If we end up stopping, the current frame will get selected | |
2409 | in normal_stop. So this call to select_frame won't affect | |
2410 | the user. */ | |
0f7d239c | 2411 | select_frame (fr); |
c906108c | 2412 | } |
c5aa993b | 2413 | |
c906108c SS |
2414 | if (within_current_scope) |
2415 | { | |
2416 | /* We use value_{,free_to_}mark because it could be a | |
2417 | *long* time before we return to the command level and | |
c5aa993b JM |
2418 | call free_all_values. We can't call free_all_values because |
2419 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2420 | |
278cd55f AC |
2421 | struct value *mark = value_mark (); |
2422 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2423 | if (!value_equal (b->val, new_val)) |
2424 | { | |
2425 | release_value (new_val); | |
2426 | value_free_to_mark (mark); | |
2427 | bs->old_val = b->val; | |
2428 | b->val = new_val; | |
2429 | /* We will stop here */ | |
2430 | return WP_VALUE_CHANGED; | |
2431 | } | |
2432 | else | |
2433 | { | |
2434 | /* Nothing changed, don't do anything. */ | |
2435 | value_free_to_mark (mark); | |
2436 | /* We won't stop here */ | |
2437 | return WP_VALUE_NOT_CHANGED; | |
2438 | } | |
2439 | } | |
2440 | else | |
2441 | { | |
2442 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2443 | if we temporarily ignored the watchpoint, then when |
2444 | we reenter the block in which it is valid it contains | |
2445 | garbage (in the case of a function, it may have two | |
2446 | garbage values, one before and one after the prologue). | |
2447 | So we can't even detect the first assignment to it and | |
2448 | watch after that (since the garbage may or may not equal | |
2449 | the first value assigned). */ | |
4ce44c66 JM |
2450 | /* We print all the stop information in print_it_typical(), but |
2451 | in this case, by the time we call print_it_typical() this bp | |
2452 | will be deleted already. So we have no choice but print the | |
2453 | information here. */ | |
9dc5e2a9 | 2454 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2455 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2456 | ui_out_text (uiout, "\nWatchpoint "); |
2457 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2458 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2459 | which its expression is valid.\n"); | |
4ce44c66 | 2460 | |
c906108c | 2461 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2462 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2463 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2464 | |
2465 | return WP_DELETED; | |
2466 | } | |
2467 | } | |
2468 | ||
c906108c SS |
2469 | /* Get a bpstat associated with having just stopped at address *PC |
2470 | and frame address CORE_ADDRESS. Update *PC to point at the | |
6e31adb3 | 2471 | breakpoint (if we hit a breakpoint). NOT_A_SW_BREAKPOINT is nonzero |
c906108c SS |
2472 | if this is known to not be a real breakpoint (it could still be a |
2473 | watchpoint, though). */ | |
2474 | ||
2475 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2476 | don't understand this stop. Result is a chain of bpstat's such that: | |
2477 | ||
c5aa993b | 2478 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2479 | |
c5aa993b | 2480 | if we understand why we stopped, the result is not null. |
c906108c | 2481 | |
c5aa993b JM |
2482 | Each element of the chain refers to a particular breakpoint or |
2483 | watchpoint at which we have stopped. (We may have stopped for | |
2484 | several reasons concurrently.) | |
c906108c | 2485 | |
c5aa993b JM |
2486 | Each element of the chain has valid next, breakpoint_at, |
2487 | commands, FIXME??? fields. */ | |
c906108c SS |
2488 | |
2489 | bpstat | |
6e31adb3 | 2490 | bpstat_stop_status (CORE_ADDR *pc, int not_a_sw_breakpoint) |
c906108c SS |
2491 | { |
2492 | register struct breakpoint *b, *temp; | |
2493 | CORE_ADDR bp_addr; | |
2494 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2495 | int real_breakpoint = 0; | |
2496 | /* Root of the chain of bpstat's */ | |
2497 | struct bpstats root_bs[1]; | |
2498 | /* Pointer to the last thing in the chain currently. */ | |
2499 | bpstat bs = root_bs; | |
2500 | static char message1[] = | |
c5aa993b JM |
2501 | "Error evaluating expression for watchpoint %d\n"; |
2502 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c | 2503 | |
6e31adb3 AC |
2504 | /* Get the address where the breakpoint would have been. The |
2505 | "not_a_sw_breakpoint" argument is meant to distinguish between a | |
2506 | breakpoint trap event and a trace/singlestep trap event. For a | |
2507 | trace/singlestep trap event, we would not want to subtract | |
2508 | DECR_PC_AFTER_BREAK from the PC. */ | |
80b34fab | 2509 | |
c8edd8b4 | 2510 | bp_addr = *pc - (not_a_sw_breakpoint ? 0 : DECR_PC_AFTER_BREAK); |
c906108c SS |
2511 | |
2512 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 2513 | { |
b5de0fa7 EZ |
2514 | if (b->enable_state == bp_disabled |
2515 | || b->enable_state == bp_shlib_disabled | |
2516 | || b->enable_state == bp_call_disabled) | |
c5aa993b JM |
2517 | continue; |
2518 | ||
2519 | if (b->type != bp_watchpoint | |
2520 | && b->type != bp_hardware_watchpoint | |
2521 | && b->type != bp_read_watchpoint | |
2522 | && b->type != bp_access_watchpoint | |
2523 | && b->type != bp_hardware_breakpoint | |
2524 | && b->type != bp_catch_fork | |
2525 | && b->type != bp_catch_vfork | |
2526 | && b->type != bp_catch_exec | |
2527 | && b->type != bp_catch_catch | |
2528 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 MS |
2529 | { |
2530 | if (b->address != bp_addr) /* address doesn't match */ | |
2531 | continue; | |
2532 | if (overlay_debugging /* unmapped overlay section */ | |
2533 | && section_is_overlay (b->section) | |
2534 | && !section_is_mapped (b->section)) | |
2535 | continue; | |
2536 | } | |
c906108c | 2537 | |
c02f5703 MS |
2538 | if (b->type == bp_hardware_breakpoint) |
2539 | { | |
2540 | if (b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2541 | continue; | |
2542 | if (overlay_debugging /* unmapped overlay section */ | |
2543 | && section_is_overlay (b->section) | |
2544 | && !section_is_mapped (b->section)) | |
2545 | continue; | |
2546 | } | |
c5aa993b | 2547 | |
c5aa993b JM |
2548 | /* Is this a catchpoint of a load or unload? If so, did we |
2549 | get a load or unload of the specified library? If not, | |
2550 | ignore it. */ | |
2551 | if ((b->type == bp_catch_load) | |
c906108c | 2552 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2553 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2554 | || ((b->dll_pathname != NULL) |
53a5351d | 2555 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2556 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2557 | PIDGET (inferior_ptid))) | |
53a5351d | 2558 | != 0))) |
c906108c | 2559 | #endif |
c5aa993b JM |
2560 | ) |
2561 | continue; | |
2562 | ||
2563 | if ((b->type == bp_catch_unload) | |
c906108c | 2564 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2565 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2566 | || ((b->dll_pathname != NULL) |
53a5351d | 2567 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2568 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2569 | PIDGET (inferior_ptid))) | |
53a5351d | 2570 | != 0))) |
c906108c | 2571 | #endif |
c5aa993b JM |
2572 | ) |
2573 | continue; | |
c906108c | 2574 | |
c5aa993b | 2575 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2576 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2577 | &b->forked_inferior_pid)) | |
c5aa993b | 2578 | continue; |
c906108c | 2579 | |
c5aa993b | 2580 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2581 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2582 | &b->forked_inferior_pid)) | |
c5aa993b | 2583 | continue; |
c906108c | 2584 | |
c5aa993b | 2585 | if ((b->type == bp_catch_exec) |
47932f85 | 2586 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2587 | continue; |
c906108c | 2588 | |
c5aa993b JM |
2589 | if (ep_is_exception_catchpoint (b) && |
2590 | !(current_exception_event = target_get_current_exception_event ())) | |
2591 | continue; | |
c906108c | 2592 | |
c5aa993b JM |
2593 | /* Come here if it's a watchpoint, or if the break address matches */ |
2594 | ||
2595 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2596 | ||
2597 | /* Watchpoints may change this, if not found to have triggered. */ | |
2598 | bs->stop = 1; | |
2599 | bs->print = 1; | |
2600 | ||
2601 | sprintf (message, message1, b->number); | |
53a5351d JM |
2602 | if (b->type == bp_watchpoint || |
2603 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2604 | { |
53a5351d JM |
2605 | switch (catch_errors (watchpoint_check, bs, message, |
2606 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2607 | { |
2608 | case WP_DELETED: | |
2609 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2610 | /* Actually this is superfluous, because by the time we |
2611 | call print_it_typical() the wp will be already deleted, | |
2612 | and the function will return immediately. */ | |
c5aa993b JM |
2613 | bs->print_it = print_it_done; |
2614 | /* Stop. */ | |
2615 | break; | |
2616 | case WP_VALUE_CHANGED: | |
2617 | /* Stop. */ | |
2618 | ++(b->hit_count); | |
2619 | break; | |
2620 | case WP_VALUE_NOT_CHANGED: | |
2621 | /* Don't stop. */ | |
2622 | bs->print_it = print_it_noop; | |
2623 | bs->stop = 0; | |
c5aa993b JM |
2624 | continue; |
2625 | default: | |
2626 | /* Can't happen. */ | |
2627 | /* FALLTHROUGH */ | |
2628 | case 0: | |
2629 | /* Error from catch_errors. */ | |
2630 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2631 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2632 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2633 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2634 | /* We've already printed what needs to be printed. */ |
2635 | bs->print_it = print_it_done; | |
2636 | ||
2637 | /* Stop. */ | |
2638 | break; | |
2639 | } | |
2640 | } | |
53a5351d JM |
2641 | else if (b->type == bp_read_watchpoint || |
2642 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2643 | { |
2644 | CORE_ADDR addr; | |
278cd55f | 2645 | struct value *v; |
c5aa993b JM |
2646 | int found = 0; |
2647 | ||
2648 | addr = target_stopped_data_address (); | |
2649 | if (addr == 0) | |
2650 | continue; | |
2651 | for (v = b->val_chain; v; v = v->next) | |
2652 | { | |
5c44784c JM |
2653 | if (VALUE_LVAL (v) == lval_memory |
2654 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2655 | { |
2e70b7b9 MS |
2656 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2657 | ||
2658 | if (v == b->val_chain | |
2659 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2660 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2661 | { | |
2662 | CORE_ADDR vaddr; | |
2663 | ||
2664 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2665 | /* Exact match not required. Within range is | |
2666 | sufficient. */ | |
2667 | if (addr >= vaddr && | |
2668 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2669 | found = 1; | |
2670 | } | |
c5aa993b JM |
2671 | } |
2672 | } | |
2673 | if (found) | |
53a5351d JM |
2674 | switch (catch_errors (watchpoint_check, bs, message, |
2675 | RETURN_MASK_ALL)) | |
c906108c SS |
2676 | { |
2677 | case WP_DELETED: | |
2678 | /* We've already printed what needs to be printed. */ | |
2679 | bs->print_it = print_it_done; | |
2680 | /* Stop. */ | |
2681 | break; | |
2682 | case WP_VALUE_CHANGED: | |
99e5c1c8 MS |
2683 | if (b->type == bp_read_watchpoint) |
2684 | { | |
2685 | /* Don't stop: read watchpoints shouldn't fire if | |
2686 | the value has changed. This is for targets which | |
2687 | cannot set read-only watchpoints. */ | |
2688 | bs->print_it = print_it_noop; | |
2689 | bs->stop = 0; | |
2690 | continue; | |
2691 | } | |
2692 | ++(b->hit_count); | |
2693 | break; | |
c5aa993b | 2694 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2695 | /* Stop. */ |
2696 | ++(b->hit_count); | |
2697 | break; | |
c906108c SS |
2698 | default: |
2699 | /* Can't happen. */ | |
c906108c SS |
2700 | case 0: |
2701 | /* Error from catch_errors. */ | |
2702 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2703 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2704 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2705 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2706 | /* We've already printed what needs to be printed. */ |
2707 | bs->print_it = print_it_done; | |
c906108c SS |
2708 | break; |
2709 | } | |
53a5351d JM |
2710 | else /* found == 0 */ |
2711 | { | |
2712 | /* This is a case where some watchpoint(s) triggered, | |
2713 | but not at the address of this watchpoint (FOUND | |
2714 | was left zero). So don't print anything for this | |
2715 | watchpoint. */ | |
2716 | bs->print_it = print_it_noop; | |
2717 | bs->stop = 0; | |
2718 | continue; | |
2719 | } | |
c5aa993b JM |
2720 | } |
2721 | else | |
2722 | { | |
2723 | /* By definition, an encountered breakpoint is a triggered | |
2724 | breakpoint. */ | |
2725 | ++(b->hit_count); | |
c906108c | 2726 | |
c5aa993b JM |
2727 | real_breakpoint = 1; |
2728 | } | |
2729 | ||
818dd999 AC |
2730 | if (frame_id_p (b->frame_id) |
2731 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2732 | bs->stop = 0; |
2733 | else | |
2734 | { | |
2735 | int value_is_zero = 0; | |
2736 | ||
2737 | if (b->cond) | |
2738 | { | |
2739 | /* Need to select the frame, with all that implies | |
2740 | so that the conditions will have the right context. */ | |
0f7d239c | 2741 | select_frame (get_current_frame ()); |
c5aa993b JM |
2742 | value_is_zero |
2743 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2744 | "Error in testing breakpoint condition:\n", | |
2745 | RETURN_MASK_ALL); | |
2746 | /* FIXME-someday, should give breakpoint # */ | |
2747 | free_all_values (); | |
2748 | } | |
2749 | if (b->cond && value_is_zero) | |
2750 | { | |
2751 | bs->stop = 0; | |
2752 | /* Don't consider this a hit. */ | |
2753 | --(b->hit_count); | |
2754 | } | |
2755 | else if (b->ignore_count > 0) | |
2756 | { | |
2757 | b->ignore_count--; | |
5c44784c | 2758 | annotate_ignore_count_change (); |
c5aa993b JM |
2759 | bs->stop = 0; |
2760 | } | |
2761 | else | |
2762 | { | |
2763 | /* We will stop here */ | |
b5de0fa7 EZ |
2764 | if (b->disposition == disp_disable) |
2765 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2766 | if (b->silent) |
2767 | bs->print = 0; | |
552f4abf | 2768 | bs->commands = b->commands; |
c5aa993b JM |
2769 | if (bs->commands && |
2770 | (STREQ ("silent", bs->commands->line) || | |
2771 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2772 | { | |
2773 | bs->commands = bs->commands->next; | |
c906108c | 2774 | bs->print = 0; |
c5aa993b | 2775 | } |
552f4abf | 2776 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2777 | } |
2778 | } | |
2779 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2780 | if (bs->stop == 0 || bs->print == 0) | |
2781 | bs->print_it = print_it_noop; | |
2782 | } | |
c906108c SS |
2783 | |
2784 | bs->next = NULL; /* Terminate the chain */ | |
2785 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2786 | ||
2787 | if (real_breakpoint && bs) | |
2788 | { | |
c5aa993b | 2789 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2790 | { |
c5aa993b | 2791 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2792 | { |
2793 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2794 | write_pc (*pc); | |
2795 | } | |
2796 | } | |
2797 | else | |
2798 | { | |
2799 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2800 | { | |
2801 | *pc = bp_addr; | |
2802 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2803 | SHIFT_INST_REGS (); |
c906108c SS |
2804 | #else /* No SHIFT_INST_REGS. */ |
2805 | write_pc (bp_addr); | |
2806 | #endif /* No SHIFT_INST_REGS. */ | |
2807 | } | |
2808 | } | |
2809 | } | |
2810 | ||
2811 | /* The value of a hardware watchpoint hasn't changed, but the | |
2812 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2813 | if (bs && !bs->stop && |
c906108c SS |
2814 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2815 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2816 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2817 | { | |
2818 | remove_breakpoints (); | |
2819 | insert_breakpoints (); | |
2820 | } | |
2821 | return bs; | |
2822 | } | |
2823 | \f | |
2824 | /* Tell what to do about this bpstat. */ | |
2825 | struct bpstat_what | |
fba45db2 | 2826 | bpstat_what (bpstat bs) |
c906108c SS |
2827 | { |
2828 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2829 | enum class |
2830 | { | |
2831 | /* This bpstat element has no effect on the main_action. */ | |
2832 | no_effect = 0, | |
2833 | ||
2834 | /* There was a watchpoint, stop but don't print. */ | |
2835 | wp_silent, | |
c906108c | 2836 | |
c5aa993b JM |
2837 | /* There was a watchpoint, stop and print. */ |
2838 | wp_noisy, | |
c906108c | 2839 | |
c5aa993b JM |
2840 | /* There was a breakpoint but we're not stopping. */ |
2841 | bp_nostop, | |
c906108c | 2842 | |
c5aa993b JM |
2843 | /* There was a breakpoint, stop but don't print. */ |
2844 | bp_silent, | |
c906108c | 2845 | |
c5aa993b JM |
2846 | /* There was a breakpoint, stop and print. */ |
2847 | bp_noisy, | |
c906108c | 2848 | |
c5aa993b JM |
2849 | /* We hit the longjmp breakpoint. */ |
2850 | long_jump, | |
c906108c | 2851 | |
c5aa993b JM |
2852 | /* We hit the longjmp_resume breakpoint. */ |
2853 | long_resume, | |
c906108c | 2854 | |
c5aa993b JM |
2855 | /* We hit the step_resume breakpoint. */ |
2856 | step_resume, | |
c906108c | 2857 | |
c5aa993b JM |
2858 | /* We hit the through_sigtramp breakpoint. */ |
2859 | through_sig, | |
c906108c | 2860 | |
c5aa993b JM |
2861 | /* We hit the shared library event breakpoint. */ |
2862 | shlib_event, | |
c906108c | 2863 | |
c5aa993b JM |
2864 | /* We caught a shared library event. */ |
2865 | catch_shlib_event, | |
c906108c | 2866 | |
c5aa993b JM |
2867 | /* This is just used to count how many enums there are. */ |
2868 | class_last | |
c906108c SS |
2869 | }; |
2870 | ||
2871 | /* Here is the table which drives this routine. So that we can | |
2872 | format it pretty, we define some abbreviations for the | |
2873 | enum bpstat_what codes. */ | |
2874 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2875 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2876 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2877 | #define sgl BPSTAT_WHAT_SINGLE | |
2878 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2879 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2880 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2881 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2882 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2883 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2884 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2885 | ||
2886 | /* "Can't happen." Might want to print an error message. | |
2887 | abort() is not out of the question, but chances are GDB is just | |
2888 | a bit confused, not unusable. */ | |
2889 | #define err BPSTAT_WHAT_STOP_NOISY | |
2890 | ||
2891 | /* Given an old action and a class, come up with a new action. */ | |
2892 | /* One interesting property of this table is that wp_silent is the same | |
2893 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2894 | after stopping, the check for whether to step over a breakpoint | |
2895 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2896 | reference to how we stopped. We retain separate wp_silent and |
2897 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2898 | |
2899 | Another possibly interesting property of this table is that | |
2900 | there's a partial ordering, priority-like, of the actions. Once | |
2901 | you've decided that some action is appropriate, you'll never go | |
2902 | back and decide something of a lower priority is better. The | |
2903 | ordering is: | |
2904 | ||
7e73cedf | 2905 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2906 | sgl < clrs shl shlr slr sn sr ss ts |
2907 | slr < err shl shlr sn sr ss ts | |
2908 | clr < clrs err shl shlr sn sr ss ts | |
2909 | clrs < err shl shlr sn sr ss ts | |
2910 | ss < shl shlr sn sr ts | |
2911 | sn < shl shlr sr ts | |
2912 | sr < shl shlr ts | |
2913 | shl < shlr | |
2914 | ts < | |
2915 | shlr < | |
2916 | ||
43ff13b4 JM |
2917 | What I think this means is that we don't need a damned table |
2918 | here. If you just put the rows and columns in the right order, | |
2919 | it'd look awfully regular. We could simply walk the bpstat list | |
2920 | and choose the highest priority action we find, with a little | |
2921 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2922 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2923 | is messy anyway). */ | |
c906108c SS |
2924 | |
2925 | /* step_resume entries: a step resume breakpoint overrides another | |
2926 | breakpoint of signal handling (see comment in wait_for_inferior | |
d7bd68ca | 2927 | at first PC_IN_SIGTRAMP where we set the step_resume breakpoint). */ |
c906108c SS |
2928 | /* We handle the through_sigtramp_breakpoint the same way; having both |
2929 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2930 | ||
2931 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2932 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2933 | { | |
2934 | /* old action */ | |
2935 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2936 | */ | |
2937 | /*no_effect */ | |
2938 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2939 | /*wp_silent */ | |
2940 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2941 | /*wp_noisy */ | |
2942 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2943 | /*bp_nostop */ | |
2944 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2945 | /*bp_silent */ | |
2946 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2947 | /*bp_noisy */ | |
2948 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2949 | /*long_jump */ | |
a48bb0b3 | 2950 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
2951 | /*long_resume */ |
2952 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2953 | /*step_resume */ | |
2954 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2955 | /*through_sig */ | |
2956 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2957 | /*shlib */ | |
2958 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2959 | /*catch_shlib */ | |
2960 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2961 | }; | |
c906108c SS |
2962 | |
2963 | #undef kc | |
2964 | #undef ss | |
2965 | #undef sn | |
2966 | #undef sgl | |
2967 | #undef slr | |
2968 | #undef clr | |
2969 | #undef clrs | |
2970 | #undef err | |
2971 | #undef sr | |
2972 | #undef ts | |
2973 | #undef shl | |
2974 | #undef shlr | |
2975 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2976 | struct bpstat_what retval; | |
2977 | ||
2978 | retval.call_dummy = 0; | |
2979 | for (; bs != NULL; bs = bs->next) | |
2980 | { | |
2981 | enum class bs_class = no_effect; | |
2982 | if (bs->breakpoint_at == NULL) | |
2983 | /* I suspect this can happen if it was a momentary breakpoint | |
2984 | which has since been deleted. */ | |
2985 | continue; | |
2986 | switch (bs->breakpoint_at->type) | |
2987 | { | |
2988 | case bp_none: | |
2989 | continue; | |
2990 | ||
2991 | case bp_breakpoint: | |
2992 | case bp_hardware_breakpoint: | |
2993 | case bp_until: | |
2994 | case bp_finish: | |
2995 | if (bs->stop) | |
2996 | { | |
2997 | if (bs->print) | |
2998 | bs_class = bp_noisy; | |
2999 | else | |
3000 | bs_class = bp_silent; | |
3001 | } | |
3002 | else | |
3003 | bs_class = bp_nostop; | |
3004 | break; | |
3005 | case bp_watchpoint: | |
3006 | case bp_hardware_watchpoint: | |
3007 | case bp_read_watchpoint: | |
3008 | case bp_access_watchpoint: | |
3009 | if (bs->stop) | |
3010 | { | |
3011 | if (bs->print) | |
3012 | bs_class = wp_noisy; | |
3013 | else | |
3014 | bs_class = wp_silent; | |
3015 | } | |
3016 | else | |
53a5351d JM |
3017 | /* There was a watchpoint, but we're not stopping. |
3018 | This requires no further action. */ | |
c906108c SS |
3019 | bs_class = no_effect; |
3020 | break; | |
3021 | case bp_longjmp: | |
3022 | bs_class = long_jump; | |
3023 | break; | |
3024 | case bp_longjmp_resume: | |
3025 | bs_class = long_resume; | |
3026 | break; | |
3027 | case bp_step_resume: | |
3028 | if (bs->stop) | |
3029 | { | |
3030 | bs_class = step_resume; | |
3031 | } | |
3032 | else | |
3033 | /* It is for the wrong frame. */ | |
3034 | bs_class = bp_nostop; | |
3035 | break; | |
3036 | case bp_through_sigtramp: | |
3037 | bs_class = through_sig; | |
3038 | break; | |
3039 | case bp_watchpoint_scope: | |
3040 | bs_class = bp_nostop; | |
3041 | break; | |
c5aa993b JM |
3042 | case bp_shlib_event: |
3043 | bs_class = shlib_event; | |
3044 | break; | |
c4093a6a | 3045 | case bp_thread_event: |
1900040c | 3046 | case bp_overlay_event: |
c4093a6a JM |
3047 | bs_class = bp_nostop; |
3048 | break; | |
c5aa993b JM |
3049 | case bp_catch_load: |
3050 | case bp_catch_unload: | |
3051 | /* Only if this catchpoint triggered should we cause the | |
3052 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3053 | catchpoint. */ | |
3054 | if (bs->stop) | |
3055 | bs_class = catch_shlib_event; | |
3056 | else | |
3057 | bs_class = no_effect; | |
3058 | break; | |
3059 | case bp_catch_fork: | |
3060 | case bp_catch_vfork: | |
3061 | case bp_catch_exec: | |
3062 | if (bs->stop) | |
3063 | { | |
3064 | if (bs->print) | |
3065 | bs_class = bp_noisy; | |
3066 | else | |
3067 | bs_class = bp_silent; | |
3068 | } | |
3069 | else | |
53a5351d JM |
3070 | /* There was a catchpoint, but we're not stopping. |
3071 | This requires no further action. */ | |
c5aa993b JM |
3072 | bs_class = no_effect; |
3073 | break; | |
3074 | case bp_catch_catch: | |
3075 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3076 | bs_class = bp_nostop; | |
3077 | else if (bs->stop) | |
3078 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3079 | break; | |
3080 | case bp_catch_throw: | |
3081 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3082 | bs_class = bp_nostop; | |
3083 | else if (bs->stop) | |
3084 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3085 | break; |
c906108c | 3086 | case bp_call_dummy: |
53a5351d JM |
3087 | /* Make sure the action is stop (silent or noisy), |
3088 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3089 | bs_class = bp_silent; |
3090 | retval.call_dummy = 1; | |
3091 | break; | |
3092 | } | |
c5aa993b | 3093 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3094 | } |
3095 | retval.main_action = current_action; | |
3096 | return retval; | |
3097 | } | |
3098 | ||
3099 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3100 | without hardware support). This isn't related to a specific bpstat, | |
3101 | just to things like whether watchpoints are set. */ | |
3102 | ||
c5aa993b | 3103 | int |
fba45db2 | 3104 | bpstat_should_step (void) |
c906108c SS |
3105 | { |
3106 | struct breakpoint *b; | |
3107 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 3108 | if (b->enable_state == bp_enabled && b->type == bp_watchpoint) |
3172dc30 | 3109 | return 1; |
c906108c SS |
3110 | return 0; |
3111 | } | |
3112 | ||
3113 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3114 | int | |
fba45db2 | 3115 | bpstat_have_active_hw_watchpoints (void) |
c906108c SS |
3116 | { |
3117 | struct breakpoint *b; | |
3118 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 3119 | if ((b->enable_state == bp_enabled) && |
c5aa993b JM |
3120 | (b->inserted) && |
3121 | ((b->type == bp_hardware_watchpoint) || | |
3122 | (b->type == bp_read_watchpoint) || | |
3123 | (b->type == bp_access_watchpoint))) | |
3172dc30 | 3124 | return 1; |
c906108c SS |
3125 | return 0; |
3126 | } | |
c906108c | 3127 | \f |
c5aa993b | 3128 | |
c906108c SS |
3129 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3130 | function returns another bpstat which contains only the catchpoints | |
3131 | on that first list, if any. */ | |
3132 | void | |
fba45db2 | 3133 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3134 | { |
3135 | struct bpstats root_bs[1]; | |
3136 | bpstat bs = root_bs; | |
3137 | struct breakpoint *ep; | |
3138 | char *dll_pathname; | |
3139 | ||
c906108c SS |
3140 | bpstat_clear (cp_list); |
3141 | root_bs->next = NULL; | |
c5aa993b JM |
3142 | |
3143 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3144 | { |
3145 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3146 | ep = ep_list->breakpoint_at; | |
3147 | if (ep == NULL) | |
c5aa993b JM |
3148 | break; |
3149 | if ((ep->type != bp_catch_load) && | |
3150 | (ep->type != bp_catch_unload) && | |
3151 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3152 | (ep->type != bp_catch_throw)) |
3153 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3154 | continue; |
3155 | ||
c906108c SS |
3156 | /* Yes; add it to the list. */ |
3157 | bs = bpstat_alloc (ep, bs); | |
3158 | *bs = *ep_list; | |
3159 | bs->next = NULL; | |
3160 | bs = root_bs->next; | |
c5aa993b | 3161 | |
c906108c SS |
3162 | #if defined(SOLIB_ADD) |
3163 | /* Also, for each triggered catchpoint, tag it with the name of | |
3164 | the library that caused this trigger. (We copy the name now, | |
3165 | because it's only guaranteed to be available NOW, when the | |
3166 | catchpoint triggers. Clients who may wish to know the name | |
3167 | later must get it from the catchpoint itself.) */ | |
3168 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3169 | xfree (ep->triggered_dll_pathname); |
c906108c | 3170 | if (ep->type == bp_catch_load) |
39f77062 KB |
3171 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3172 | PIDGET (inferior_ptid)); | |
c906108c | 3173 | else |
39f77062 KB |
3174 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3175 | PIDGET (inferior_ptid)); | |
c906108c SS |
3176 | #else |
3177 | dll_pathname = NULL; | |
3178 | #endif | |
3179 | if (dll_pathname) | |
3180 | { | |
53a5351d JM |
3181 | ep->triggered_dll_pathname = (char *) |
3182 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3183 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3184 | } | |
3185 | else | |
3186 | ep->triggered_dll_pathname = NULL; | |
3187 | } | |
c5aa993b | 3188 | |
c906108c SS |
3189 | *cp_list = bs; |
3190 | } | |
3191 | ||
c4093a6a | 3192 | /* Print B to gdb_stdout. */ |
c906108c | 3193 | static void |
c4093a6a JM |
3194 | print_one_breakpoint (struct breakpoint *b, |
3195 | CORE_ADDR *last_addr) | |
c906108c | 3196 | { |
c906108c SS |
3197 | register struct command_line *l; |
3198 | register struct symbol *sym; | |
c4093a6a JM |
3199 | struct ep_type_description |
3200 | { | |
3201 | enum bptype type; | |
3202 | char *description; | |
3203 | }; | |
3204 | static struct ep_type_description bptypes[] = | |
c906108c | 3205 | { |
c5aa993b JM |
3206 | {bp_none, "?deleted?"}, |
3207 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3208 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3209 | {bp_until, "until"}, |
3210 | {bp_finish, "finish"}, | |
3211 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3212 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3213 | {bp_read_watchpoint, "read watchpoint"}, |
3214 | {bp_access_watchpoint, "acc watchpoint"}, | |
3215 | {bp_longjmp, "longjmp"}, | |
3216 | {bp_longjmp_resume, "longjmp resume"}, | |
3217 | {bp_step_resume, "step resume"}, | |
3218 | {bp_through_sigtramp, "sigtramp"}, | |
3219 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3220 | {bp_call_dummy, "call dummy"}, | |
3221 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3222 | {bp_thread_event, "thread events"}, |
1900040c | 3223 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3224 | {bp_catch_load, "catch load"}, |
3225 | {bp_catch_unload, "catch unload"}, | |
3226 | {bp_catch_fork, "catch fork"}, | |
3227 | {bp_catch_vfork, "catch vfork"}, | |
3228 | {bp_catch_exec, "catch exec"}, | |
3229 | {bp_catch_catch, "catch catch"}, | |
3230 | {bp_catch_throw, "catch throw"} | |
3231 | }; | |
c4093a6a | 3232 | |
c5aa993b JM |
3233 | static char *bpdisps[] = |
3234 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3235 | static char bpenables[] = "nynny"; |
c906108c | 3236 | char wrap_indent[80]; |
8b93c638 JM |
3237 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3238 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3239 | struct cleanup *bkpt_chain; |
c906108c | 3240 | |
c4093a6a | 3241 | annotate_record (); |
3b31d625 | 3242 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3243 | |
3244 | /* 1 */ | |
3245 | annotate_field (0); | |
8b93c638 | 3246 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3247 | |
3248 | /* 2 */ | |
3249 | annotate_field (1); | |
3250 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3251 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3252 | internal_error (__FILE__, __LINE__, |
3253 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3254 | (int) b->type); |
8b93c638 | 3255 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3256 | |
3257 | /* 3 */ | |
3258 | annotate_field (2); | |
8b93c638 | 3259 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3260 | |
3261 | /* 4 */ | |
3262 | annotate_field (3); | |
b5de0fa7 | 3263 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3264 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3265 | |
3266 | /* 5 and 6 */ | |
3267 | strcpy (wrap_indent, " "); | |
3268 | if (addressprint) | |
75ac9d7b MS |
3269 | { |
3270 | if (TARGET_ADDR_BIT <= 32) | |
3271 | strcat (wrap_indent, " "); | |
3272 | else | |
3273 | strcat (wrap_indent, " "); | |
3274 | } | |
c4093a6a | 3275 | switch (b->type) |
c5aa993b | 3276 | { |
c4093a6a | 3277 | case bp_none: |
8e65ff28 AC |
3278 | internal_error (__FILE__, __LINE__, |
3279 | "print_one_breakpoint: bp_none encountered\n"); | |
c4093a6a | 3280 | break; |
c906108c | 3281 | |
c4093a6a JM |
3282 | case bp_watchpoint: |
3283 | case bp_hardware_watchpoint: | |
3284 | case bp_read_watchpoint: | |
3285 | case bp_access_watchpoint: | |
3286 | /* Field 4, the address, is omitted (which makes the columns | |
3287 | not line up too nicely with the headers, but the effect | |
3288 | is relatively readable). */ | |
8b93c638 JM |
3289 | if (addressprint) |
3290 | ui_out_field_skip (uiout, "addr"); | |
3291 | annotate_field (5); | |
3292 | print_expression (b->exp, stb->stream); | |
3293 | ui_out_field_stream (uiout, "what", stb); | |
c4093a6a JM |
3294 | break; |
3295 | ||
3296 | case bp_catch_load: | |
3297 | case bp_catch_unload: | |
3298 | /* Field 4, the address, is omitted (which makes the columns | |
3299 | not line up too nicely with the headers, but the effect | |
3300 | is relatively readable). */ | |
8b93c638 JM |
3301 | if (addressprint) |
3302 | ui_out_field_skip (uiout, "addr"); | |
3303 | annotate_field (5); | |
3304 | if (b->dll_pathname == NULL) | |
3305 | { | |
3306 | ui_out_field_string (uiout, "what", "<any library>"); | |
3307 | ui_out_spaces (uiout, 1); | |
3308 | } | |
3309 | else | |
3310 | { | |
3311 | ui_out_text (uiout, "library \""); | |
3312 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3313 | ui_out_text (uiout, "\" "); | |
3314 | } | |
c4093a6a JM |
3315 | break; |
3316 | ||
3317 | case bp_catch_fork: | |
3318 | case bp_catch_vfork: | |
3319 | /* Field 4, the address, is omitted (which makes the columns | |
3320 | not line up too nicely with the headers, but the effect | |
3321 | is relatively readable). */ | |
8b93c638 JM |
3322 | if (addressprint) |
3323 | ui_out_field_skip (uiout, "addr"); | |
3324 | annotate_field (5); | |
3325 | if (b->forked_inferior_pid != 0) | |
3326 | { | |
3327 | ui_out_text (uiout, "process "); | |
3328 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3329 | ui_out_spaces (uiout, 1); | |
3330 | } | |
c4093a6a JM |
3331 | |
3332 | case bp_catch_exec: | |
3333 | /* Field 4, the address, is omitted (which makes the columns | |
3334 | not line up too nicely with the headers, but the effect | |
3335 | is relatively readable). */ | |
8b93c638 JM |
3336 | if (addressprint) |
3337 | ui_out_field_skip (uiout, "addr"); | |
3338 | annotate_field (5); | |
3339 | if (b->exec_pathname != NULL) | |
3340 | { | |
3341 | ui_out_text (uiout, "program \""); | |
3342 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3343 | ui_out_text (uiout, "\" "); | |
3344 | } | |
c4093a6a | 3345 | break; |
c906108c | 3346 | |
c4093a6a JM |
3347 | case bp_catch_catch: |
3348 | /* Field 4, the address, is omitted (which makes the columns | |
3349 | not line up too nicely with the headers, but the effect | |
3350 | is relatively readable). */ | |
8b93c638 JM |
3351 | if (addressprint) |
3352 | ui_out_field_skip (uiout, "addr"); | |
3353 | annotate_field (5); | |
3354 | ui_out_field_string (uiout, "what", "exception catch"); | |
3355 | ui_out_spaces (uiout, 1); | |
c4093a6a | 3356 | break; |
c906108c | 3357 | |
c4093a6a JM |
3358 | case bp_catch_throw: |
3359 | /* Field 4, the address, is omitted (which makes the columns | |
3360 | not line up too nicely with the headers, but the effect | |
3361 | is relatively readable). */ | |
8b93c638 JM |
3362 | if (addressprint) |
3363 | ui_out_field_skip (uiout, "addr"); | |
3364 | annotate_field (5); | |
3365 | ui_out_field_string (uiout, "what", "exception throw"); | |
3366 | ui_out_spaces (uiout, 1); | |
c4093a6a JM |
3367 | break; |
3368 | ||
3369 | case bp_breakpoint: | |
3370 | case bp_hardware_breakpoint: | |
3371 | case bp_until: | |
3372 | case bp_finish: | |
3373 | case bp_longjmp: | |
3374 | case bp_longjmp_resume: | |
3375 | case bp_step_resume: | |
3376 | case bp_through_sigtramp: | |
3377 | case bp_watchpoint_scope: | |
3378 | case bp_call_dummy: | |
3379 | case bp_shlib_event: | |
3380 | case bp_thread_event: | |
1900040c | 3381 | case bp_overlay_event: |
8b93c638 JM |
3382 | if (addressprint) |
3383 | { | |
3384 | annotate_field (4); | |
3385 | ui_out_field_core_addr (uiout, "addr", b->address); | |
3386 | } | |
3387 | annotate_field (5); | |
3388 | *last_addr = b->address; | |
3389 | if (b->source_file) | |
3390 | { | |
3391 | sym = find_pc_sect_function (b->address, b->section); | |
3392 | if (sym) | |
3393 | { | |
3394 | ui_out_text (uiout, "in "); | |
3395 | ui_out_field_string (uiout, "func", | |
de5ad195 | 3396 | SYMBOL_PRINT_NAME (sym)); |
8b93c638 JM |
3397 | ui_out_wrap_hint (uiout, wrap_indent); |
3398 | ui_out_text (uiout, " at "); | |
3399 | } | |
3400 | ui_out_field_string (uiout, "file", b->source_file); | |
3401 | ui_out_text (uiout, ":"); | |
3402 | ui_out_field_int (uiout, "line", b->line_number); | |
3403 | } | |
3404 | else | |
3405 | { | |
3406 | print_address_symbolic (b->address, stb->stream, demangle, ""); | |
3407 | ui_out_field_stream (uiout, "at", stb); | |
3408 | } | |
c4093a6a JM |
3409 | break; |
3410 | } | |
3411 | ||
3412 | if (b->thread != -1) | |
3413 | { | |
8b93c638 JM |
3414 | /* FIXME: This seems to be redundant and lost here; see the |
3415 | "stop only in" line a little further down. */ | |
3416 | ui_out_text (uiout, " thread "); | |
3417 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3418 | } |
3419 | ||
8b93c638 | 3420 | ui_out_text (uiout, "\n"); |
c4093a6a | 3421 | |
818dd999 | 3422 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3423 | { |
3424 | annotate_field (6); | |
8b93c638 | 3425 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3426 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3427 | the frame ID. */ | |
3428 | ui_out_field_core_addr (uiout, "frame", b->frame_id.base); | |
8b93c638 | 3429 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3430 | } |
3431 | ||
3432 | if (b->cond) | |
3433 | { | |
3434 | annotate_field (7); | |
8b93c638 JM |
3435 | ui_out_text (uiout, "\tstop only if "); |
3436 | print_expression (b->cond, stb->stream); | |
3437 | ui_out_field_stream (uiout, "cond", stb); | |
3438 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3439 | } |
3440 | ||
3441 | if (b->thread != -1) | |
3442 | { | |
3443 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3444 | ui_out_text (uiout, "\tstop only in thread "); |
3445 | ui_out_field_int (uiout, "thread", b->thread); | |
3446 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3447 | } |
3448 | ||
3449 | if (show_breakpoint_hit_counts && b->hit_count) | |
3450 | { | |
3451 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3452 | if (ep_is_catchpoint (b)) |
3453 | ui_out_text (uiout, "\tcatchpoint"); | |
3454 | else | |
3455 | ui_out_text (uiout, "\tbreakpoint"); | |
3456 | ui_out_text (uiout, " already hit "); | |
3457 | ui_out_field_int (uiout, "times", b->hit_count); | |
3458 | if (b->hit_count == 1) | |
3459 | ui_out_text (uiout, " time\n"); | |
3460 | else | |
3461 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3462 | } |
3463 | ||
fb40c209 AC |
3464 | /* Output the count also if it is zero, but only if this is |
3465 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3466 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3467 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3468 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3469 | |
c4093a6a JM |
3470 | if (b->ignore_count) |
3471 | { | |
3472 | annotate_field (8); | |
8b93c638 JM |
3473 | ui_out_text (uiout, "\tignore next "); |
3474 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3475 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3476 | } |
3477 | ||
3478 | if ((l = b->commands)) | |
3479 | { | |
3b31d625 EZ |
3480 | struct cleanup *script_chain; |
3481 | ||
c4093a6a | 3482 | annotate_field (9); |
3b31d625 | 3483 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3484 | print_command_lines (uiout, l, 4); |
3b31d625 | 3485 | do_cleanups (script_chain); |
c4093a6a | 3486 | } |
3b31d625 | 3487 | do_cleanups (bkpt_chain); |
8b93c638 | 3488 | do_cleanups (old_chain); |
c4093a6a | 3489 | } |
c5aa993b | 3490 | |
c4093a6a JM |
3491 | struct captured_breakpoint_query_args |
3492 | { | |
3493 | int bnum; | |
3494 | }; | |
c5aa993b | 3495 | |
c4093a6a | 3496 | static int |
2b65245e | 3497 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3498 | { |
3499 | struct captured_breakpoint_query_args *args = data; | |
3500 | register struct breakpoint *b; | |
3501 | CORE_ADDR dummy_addr = 0; | |
3502 | ALL_BREAKPOINTS (b) | |
3503 | { | |
3504 | if (args->bnum == b->number) | |
c5aa993b | 3505 | { |
c4093a6a JM |
3506 | print_one_breakpoint (b, &dummy_addr); |
3507 | return GDB_RC_OK; | |
c5aa993b | 3508 | } |
c4093a6a JM |
3509 | } |
3510 | return GDB_RC_NONE; | |
3511 | } | |
c5aa993b | 3512 | |
c4093a6a | 3513 | enum gdb_rc |
2b65245e | 3514 | gdb_breakpoint_query (struct ui_out *uiout, int bnum) |
c4093a6a JM |
3515 | { |
3516 | struct captured_breakpoint_query_args args; | |
3517 | args.bnum = bnum; | |
3518 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3519 | an error. */ | |
2b65245e AC |
3520 | return catch_exceptions (uiout, do_captured_breakpoint_query, &args, |
3521 | NULL, RETURN_MASK_ALL); | |
c4093a6a | 3522 | } |
c5aa993b | 3523 | |
7f3b0473 AC |
3524 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3525 | catchpoints, et.al.). */ | |
3526 | ||
3527 | static int | |
3528 | user_settable_breakpoint (const struct breakpoint *b) | |
3529 | { | |
3530 | return (b->type == bp_breakpoint | |
3531 | || b->type == bp_catch_load | |
3532 | || b->type == bp_catch_unload | |
3533 | || b->type == bp_catch_fork | |
3534 | || b->type == bp_catch_vfork | |
3535 | || b->type == bp_catch_exec | |
3536 | || b->type == bp_catch_catch | |
3537 | || b->type == bp_catch_throw | |
3538 | || b->type == bp_hardware_breakpoint | |
3539 | || b->type == bp_watchpoint | |
3540 | || b->type == bp_read_watchpoint | |
3541 | || b->type == bp_access_watchpoint | |
3542 | || b->type == bp_hardware_watchpoint); | |
3543 | } | |
3544 | ||
3545 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3546 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3547 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3548 | |
c4093a6a | 3549 | static void |
fba45db2 | 3550 | breakpoint_1 (int bnum, int allflag) |
c4093a6a JM |
3551 | { |
3552 | register struct breakpoint *b; | |
3553 | CORE_ADDR last_addr = (CORE_ADDR) -1; | |
7f3b0473 | 3554 | int nr_printable_breakpoints; |
3b31d625 | 3555 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3556 | |
7f3b0473 AC |
3557 | /* Compute the number of rows in the table. */ |
3558 | nr_printable_breakpoints = 0; | |
3559 | ALL_BREAKPOINTS (b) | |
3560 | if (bnum == -1 | |
3561 | || bnum == b->number) | |
3562 | { | |
3563 | if (allflag || user_settable_breakpoint (b)) | |
3564 | nr_printable_breakpoints++; | |
3565 | } | |
3566 | ||
8b93c638 | 3567 | if (addressprint) |
3b31d625 EZ |
3568 | bkpttbl_chain |
3569 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3570 | "BreakpointTable"); | |
8b93c638 | 3571 | else |
3b31d625 EZ |
3572 | bkpttbl_chain |
3573 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3574 | "BreakpointTable"); | |
8b93c638 | 3575 | |
7f3b0473 | 3576 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3577 | annotate_breakpoints_headers (); |
3578 | if (nr_printable_breakpoints > 0) | |
3579 | annotate_field (0); | |
3580 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3581 | if (nr_printable_breakpoints > 0) | |
3582 | annotate_field (1); | |
3583 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3584 | if (nr_printable_breakpoints > 0) | |
3585 | annotate_field (2); | |
3586 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3587 | if (nr_printable_breakpoints > 0) | |
3588 | annotate_field (3); | |
3589 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3590 | if (addressprint) | |
7f3b0473 | 3591 | { |
d7faa9e7 AC |
3592 | if (nr_printable_breakpoints > 0) |
3593 | annotate_field (4); | |
7f3b0473 | 3594 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3595 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3596 | else |
b25959ec | 3597 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3598 | } |
d7faa9e7 AC |
3599 | if (nr_printable_breakpoints > 0) |
3600 | annotate_field (5); | |
3601 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3602 | ui_out_table_body (uiout); | |
3603 | if (nr_printable_breakpoints > 0) | |
3604 | annotate_breakpoints_table (); | |
7f3b0473 | 3605 | |
c4093a6a JM |
3606 | ALL_BREAKPOINTS (b) |
3607 | if (bnum == -1 | |
3608 | || bnum == b->number) | |
3609 | { | |
3610 | /* We only print out user settable breakpoints unless the | |
3611 | allflag is set. */ | |
7f3b0473 AC |
3612 | if (allflag || user_settable_breakpoint (b)) |
3613 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3614 | } |
3615 | ||
3b31d625 | 3616 | do_cleanups (bkpttbl_chain); |
698384cd | 3617 | |
7f3b0473 | 3618 | if (nr_printable_breakpoints == 0) |
c906108c | 3619 | { |
8b93c638 JM |
3620 | if (bnum == -1) |
3621 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3622 | else | |
3623 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3624 | bnum); | |
c906108c SS |
3625 | } |
3626 | else | |
c4093a6a JM |
3627 | { |
3628 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3629 | that a comparison of an unsigned with -1 is always false. */ | |
3630 | if (last_addr != (CORE_ADDR) -1) | |
3631 | set_next_address (last_addr); | |
3632 | } | |
c906108c | 3633 | |
c4093a6a JM |
3634 | /* FIXME? Should this be moved up so that it is only called when |
3635 | there have been breakpoints? */ | |
c906108c SS |
3636 | annotate_breakpoints_table_end (); |
3637 | } | |
3638 | ||
3639 | /* ARGSUSED */ | |
3640 | static void | |
fba45db2 | 3641 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3642 | { |
3643 | int bnum = -1; | |
3644 | ||
3645 | if (bnum_exp) | |
bb518678 | 3646 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3647 | |
3648 | breakpoint_1 (bnum, 0); | |
3649 | } | |
3650 | ||
c906108c | 3651 | /* ARGSUSED */ |
7a292a7a | 3652 | static void |
fba45db2 | 3653 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3654 | { |
3655 | int bnum = -1; | |
3656 | ||
3657 | if (bnum_exp) | |
bb518678 | 3658 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3659 | |
3660 | breakpoint_1 (bnum, 1); | |
3661 | } | |
3662 | ||
c906108c SS |
3663 | /* Print a message describing any breakpoints set at PC. */ |
3664 | ||
3665 | static void | |
fba45db2 | 3666 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c SS |
3667 | { |
3668 | register int others = 0; | |
3669 | register struct breakpoint *b; | |
3670 | ||
3671 | ALL_BREAKPOINTS (b) | |
9f04af04 MS |
3672 | if (b->address == pc) /* address match / overlay match */ |
3673 | if (!overlay_debugging || b->section == section) | |
3674 | others++; | |
c906108c SS |
3675 | if (others > 0) |
3676 | { | |
3677 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3678 | ALL_BREAKPOINTS (b) | |
9f04af04 MS |
3679 | if (b->address == pc) /* address match / overlay match */ |
3680 | if (!overlay_debugging || b->section == section) | |
3681 | { | |
3682 | others--; | |
3683 | printf_filtered ("%d%s%s ", | |
3684 | b->number, | |
3685 | ((b->enable_state == bp_disabled || | |
3686 | b->enable_state == bp_shlib_disabled || | |
3687 | b->enable_state == bp_call_disabled) | |
3688 | ? " (disabled)" | |
3689 | : b->enable_state == bp_permanent | |
3690 | ? " (permanent)" | |
3691 | : ""), | |
3692 | (others > 1) ? "," | |
3693 | : ((others == 1) ? " and" : "")); | |
3694 | } | |
c906108c SS |
3695 | printf_filtered ("also set at pc "); |
3696 | print_address_numeric (pc, 1, gdb_stdout); | |
3697 | printf_filtered (".\n"); | |
3698 | } | |
3699 | } | |
3700 | \f | |
3701 | /* Set the default place to put a breakpoint | |
3702 | for the `break' command with no arguments. */ | |
3703 | ||
3704 | void | |
fba45db2 KB |
3705 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3706 | int line) | |
c906108c SS |
3707 | { |
3708 | default_breakpoint_valid = valid; | |
3709 | default_breakpoint_address = addr; | |
3710 | default_breakpoint_symtab = symtab; | |
3711 | default_breakpoint_line = line; | |
3712 | } | |
3713 | ||
e4f237da KB |
3714 | /* Return true iff it is meaningful to use the address member of |
3715 | BPT. For some breakpoint types, the address member is irrelevant | |
3716 | and it makes no sense to attempt to compare it to other addresses | |
3717 | (or use it for any other purpose either). | |
3718 | ||
3719 | More specifically, each of the following breakpoint types will always | |
3720 | have a zero valued address and we don't want check_duplicates() to mark | |
3721 | breakpoints of any of these types to be a duplicate of an actual | |
3722 | breakpoint at address zero: | |
3723 | ||
3724 | bp_watchpoint | |
3725 | bp_hardware_watchpoint | |
3726 | bp_read_watchpoint | |
3727 | bp_access_watchpoint | |
3728 | bp_catch_exec | |
3729 | bp_longjmp_resume | |
3730 | bp_catch_fork | |
3731 | bp_catch_vork */ | |
3732 | ||
3733 | static int | |
3734 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3735 | { | |
3736 | enum bptype type = bpt->type; | |
3737 | ||
3738 | return (type != bp_watchpoint | |
3739 | && type != bp_hardware_watchpoint | |
3740 | && type != bp_read_watchpoint | |
3741 | && type != bp_access_watchpoint | |
3742 | && type != bp_catch_exec | |
3743 | && type != bp_longjmp_resume | |
3744 | && type != bp_catch_fork | |
3745 | && type != bp_catch_vfork); | |
3746 | } | |
3747 | ||
9f60f21b | 3748 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3749 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3750 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3751 | If we have a permanent breakpoint at the same place as BPT, make |
3752 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3753 | |
3754 | static void | |
9f60f21b | 3755 | check_duplicates (struct breakpoint *bpt) |
c906108c SS |
3756 | { |
3757 | register struct breakpoint *b; | |
3758 | register int count = 0; | |
c2c6d25f | 3759 | struct breakpoint *perm_bp = 0; |
9f60f21b JB |
3760 | CORE_ADDR address = bpt->address; |
3761 | asection *section = bpt->section; | |
c906108c | 3762 | |
e4f237da | 3763 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3764 | return; |
3765 | ||
3766 | ALL_BREAKPOINTS (b) | |
b5de0fa7 EZ |
3767 | if (b->enable_state != bp_disabled |
3768 | && b->enable_state != bp_shlib_disabled | |
3769 | && b->enable_state != bp_call_disabled | |
9f04af04 MS |
3770 | && b->address == address /* address / overlay match */ |
3771 | && (!overlay_debugging || b->section == section) | |
e4f237da | 3772 | && breakpoint_address_is_meaningful (b)) |
c5aa993b | 3773 | { |
c2c6d25f | 3774 | /* Have we found a permanent breakpoint? */ |
b5de0fa7 | 3775 | if (b->enable_state == bp_permanent) |
c2c6d25f JM |
3776 | { |
3777 | perm_bp = b; | |
3778 | break; | |
3779 | } | |
3780 | ||
c5aa993b JM |
3781 | count++; |
3782 | b->duplicate = count > 1; | |
3783 | } | |
c2c6d25f JM |
3784 | |
3785 | /* If we found a permanent breakpoint at this address, go over the | |
3786 | list again and declare all the other breakpoints there to be the | |
3787 | duplicates. */ | |
3788 | if (perm_bp) | |
3789 | { | |
3790 | perm_bp->duplicate = 0; | |
3791 | ||
3792 | /* Permanent breakpoint should always be inserted. */ | |
3793 | if (! perm_bp->inserted) | |
8e65ff28 AC |
3794 | internal_error (__FILE__, __LINE__, |
3795 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3796 | "actually inserted"); |
3797 | ||
3798 | ALL_BREAKPOINTS (b) | |
3799 | if (b != perm_bp) | |
3800 | { | |
3801 | if (b->inserted) | |
8e65ff28 AC |
3802 | internal_error (__FILE__, __LINE__, |
3803 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
3804 | "a permanent breakpoint"); |
3805 | ||
b5de0fa7 EZ |
3806 | if (b->enable_state != bp_disabled |
3807 | && b->enable_state != bp_shlib_disabled | |
3808 | && b->enable_state != bp_call_disabled | |
9f04af04 MS |
3809 | && b->address == address /* address / overlay match */ |
3810 | && (!overlay_debugging || b->section == section) | |
e4f237da | 3811 | && breakpoint_address_is_meaningful (b)) |
c2c6d25f JM |
3812 | b->duplicate = 1; |
3813 | } | |
3814 | } | |
c906108c SS |
3815 | } |
3816 | ||
4d28f7a8 KB |
3817 | /* set_raw_breakpoint() is a low level routine for allocating and |
3818 | partially initializing a breakpoint of type BPTYPE. The newly | |
3819 | created breakpoint's address, section, source file name, and line | |
3820 | number are provided by SAL. The newly created and partially | |
3821 | initialized breakpoint is added to the breakpoint chain and | |
3822 | is also returned as the value of this function. | |
c906108c | 3823 | |
4d28f7a8 KB |
3824 | It is expected that the caller will complete the initialization of |
3825 | the newly created breakpoint struct as well as output any status | |
3826 | information regarding the creation of a new breakpoint. In | |
3827 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
3828 | number! Care should be taken to not allow an error() to occur | |
3829 | prior to completing the initialization of the breakpoint. If this | |
3830 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
3831 | |
3832 | struct breakpoint * | |
4d28f7a8 | 3833 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c SS |
3834 | { |
3835 | register struct breakpoint *b, *b1; | |
3836 | ||
3837 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3838 | memset (b, 0, sizeof (*b)); | |
3839 | b->address = sal.pc; | |
3840 | if (sal.symtab == NULL) | |
3841 | b->source_file = NULL; | |
3842 | else | |
3843 | b->source_file = savestring (sal.symtab->filename, | |
3844 | strlen (sal.symtab->filename)); | |
3845 | b->section = sal.section; | |
4d28f7a8 | 3846 | b->type = bptype; |
c906108c SS |
3847 | b->language = current_language->la_language; |
3848 | b->input_radix = input_radix; | |
3849 | b->thread = -1; | |
3850 | b->line_number = sal.line; | |
b5de0fa7 | 3851 | b->enable_state = bp_enabled; |
c906108c SS |
3852 | b->next = 0; |
3853 | b->silent = 0; | |
3854 | b->ignore_count = 0; | |
3855 | b->commands = NULL; | |
818dd999 | 3856 | b->frame_id = null_frame_id; |
c906108c SS |
3857 | b->dll_pathname = NULL; |
3858 | b->triggered_dll_pathname = NULL; | |
3859 | b->forked_inferior_pid = 0; | |
3860 | b->exec_pathname = NULL; | |
3861 | ||
3862 | /* Add this breakpoint to the end of the chain | |
3863 | so that a list of breakpoints will come out in order | |
3864 | of increasing numbers. */ | |
3865 | ||
3866 | b1 = breakpoint_chain; | |
3867 | if (b1 == 0) | |
3868 | breakpoint_chain = b; | |
3869 | else | |
3870 | { | |
3871 | while (b1->next) | |
3872 | b1 = b1->next; | |
3873 | b1->next = b; | |
3874 | } | |
3875 | ||
9f60f21b | 3876 | check_duplicates (b); |
c906108c SS |
3877 | breakpoints_changed (); |
3878 | ||
3879 | return b; | |
3880 | } | |
3881 | ||
c2c6d25f JM |
3882 | |
3883 | /* Note that the breakpoint object B describes a permanent breakpoint | |
3884 | instruction, hard-wired into the inferior's code. */ | |
3885 | void | |
3886 | make_breakpoint_permanent (struct breakpoint *b) | |
3887 | { | |
b5de0fa7 | 3888 | b->enable_state = bp_permanent; |
c2c6d25f JM |
3889 | |
3890 | /* By definition, permanent breakpoints are already present in the code. */ | |
3891 | b->inserted = 1; | |
3892 | } | |
3893 | ||
1900040c MS |
3894 | static struct breakpoint * |
3895 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
3896 | { | |
3897 | static int internal_breakpoint_number = -1; | |
3898 | struct symtab_and_line sal; | |
3899 | struct breakpoint *b; | |
3900 | ||
fe39c653 | 3901 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
3902 | |
3903 | sal.pc = address; | |
3904 | sal.section = find_pc_overlay (sal.pc); | |
3905 | ||
3906 | b = set_raw_breakpoint (sal, type); | |
3907 | b->number = internal_breakpoint_number--; | |
3908 | b->disposition = disp_donttouch; | |
3909 | ||
3910 | return b; | |
3911 | } | |
3912 | ||
c906108c SS |
3913 | |
3914 | static void | |
fba45db2 | 3915 | create_longjmp_breakpoint (char *func_name) |
c906108c | 3916 | { |
c906108c | 3917 | struct breakpoint *b; |
1900040c | 3918 | struct minimal_symbol *m; |
c906108c | 3919 | |
1900040c MS |
3920 | if (func_name == NULL) |
3921 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
3922 | else | |
c906108c | 3923 | { |
1900040c | 3924 | if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL) |
c906108c | 3925 | return; |
1900040c MS |
3926 | |
3927 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 3928 | } |
c906108c | 3929 | |
b5de0fa7 | 3930 | b->enable_state = bp_disabled; |
c906108c SS |
3931 | b->silent = 1; |
3932 | if (func_name) | |
4fcf66da | 3933 | b->addr_string = xstrdup (func_name); |
c906108c SS |
3934 | } |
3935 | ||
53a5351d JM |
3936 | /* Call this routine when stepping and nexting to enable a breakpoint |
3937 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3938 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3939 | ||
3940 | void | |
fba45db2 | 3941 | enable_longjmp_breakpoint (void) |
c906108c SS |
3942 | { |
3943 | register struct breakpoint *b; | |
3944 | ||
3945 | ALL_BREAKPOINTS (b) | |
3946 | if (b->type == bp_longjmp) | |
c5aa993b | 3947 | { |
b5de0fa7 | 3948 | b->enable_state = bp_enabled; |
9f60f21b | 3949 | check_duplicates (b); |
c5aa993b | 3950 | } |
c906108c SS |
3951 | } |
3952 | ||
3953 | void | |
fba45db2 | 3954 | disable_longjmp_breakpoint (void) |
c906108c SS |
3955 | { |
3956 | register struct breakpoint *b; | |
3957 | ||
3958 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3959 | if (b->type == bp_longjmp |
c906108c | 3960 | || b->type == bp_longjmp_resume) |
c5aa993b | 3961 | { |
b5de0fa7 | 3962 | b->enable_state = bp_disabled; |
9f60f21b | 3963 | check_duplicates (b); |
c5aa993b | 3964 | } |
c906108c SS |
3965 | } |
3966 | ||
1900040c MS |
3967 | static void |
3968 | create_overlay_event_breakpoint (char *func_name) | |
3969 | { | |
3970 | struct breakpoint *b; | |
3971 | struct minimal_symbol *m; | |
3972 | ||
3973 | if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL) | |
3974 | return; | |
3975 | ||
3976 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
3977 | bp_overlay_event); | |
3978 | b->addr_string = xstrdup (func_name); | |
3979 | ||
3980 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
3981 | { |
3982 | b->enable_state = bp_enabled; | |
3983 | overlay_events_enabled = 1; | |
3984 | } | |
1900040c | 3985 | else |
c02f5703 MS |
3986 | { |
3987 | b->enable_state = bp_disabled; | |
3988 | overlay_events_enabled = 0; | |
3989 | } | |
1900040c MS |
3990 | } |
3991 | ||
3992 | void | |
3993 | enable_overlay_breakpoints (void) | |
3994 | { | |
3995 | register struct breakpoint *b; | |
3996 | ||
3997 | ALL_BREAKPOINTS (b) | |
3998 | if (b->type == bp_overlay_event) | |
3999 | { | |
4000 | b->enable_state = bp_enabled; | |
4001 | check_duplicates (b); | |
c02f5703 | 4002 | overlay_events_enabled = 1; |
1900040c MS |
4003 | } |
4004 | } | |
4005 | ||
4006 | void | |
4007 | disable_overlay_breakpoints (void) | |
4008 | { | |
4009 | register struct breakpoint *b; | |
4010 | ||
4011 | ALL_BREAKPOINTS (b) | |
4012 | if (b->type == bp_overlay_event) | |
4013 | { | |
4014 | b->enable_state = bp_disabled; | |
4015 | check_duplicates (b); | |
c02f5703 | 4016 | overlay_events_enabled = 0; |
1900040c MS |
4017 | } |
4018 | } | |
4019 | ||
c4093a6a | 4020 | struct breakpoint * |
fba45db2 | 4021 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4022 | { |
4023 | struct breakpoint *b; | |
c4093a6a | 4024 | |
1900040c | 4025 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4026 | |
b5de0fa7 | 4027 | b->enable_state = bp_enabled; |
c4093a6a | 4028 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
d8ef46f5 | 4029 | xasprintf (&b->addr_string, "*0x%s", paddr (b->address)); |
c4093a6a JM |
4030 | |
4031 | return b; | |
4032 | } | |
4033 | ||
4034 | void | |
4035 | remove_thread_event_breakpoints (void) | |
4036 | { | |
4037 | struct breakpoint *b, *temp; | |
4038 | ||
4039 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4040 | if (b->type == bp_thread_event) | |
4041 | delete_breakpoint (b); | |
4042 | } | |
4043 | ||
c906108c SS |
4044 | #ifdef SOLIB_ADD |
4045 | void | |
fba45db2 | 4046 | remove_solib_event_breakpoints (void) |
c906108c SS |
4047 | { |
4048 | register struct breakpoint *b, *temp; | |
4049 | ||
4050 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4051 | if (b->type == bp_shlib_event) | |
3172dc30 | 4052 | delete_breakpoint (b); |
c906108c SS |
4053 | } |
4054 | ||
c2c6d25f | 4055 | struct breakpoint * |
fba45db2 | 4056 | create_solib_event_breakpoint (CORE_ADDR address) |
c906108c SS |
4057 | { |
4058 | struct breakpoint *b; | |
c2c6d25f | 4059 | |
1900040c | 4060 | b = create_internal_breakpoint (address, bp_shlib_event); |
c2c6d25f | 4061 | return b; |
c906108c SS |
4062 | } |
4063 | ||
104c1213 JM |
4064 | /* Disable any breakpoints that are on code in shared libraries. Only |
4065 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4066 | ||
c906108c | 4067 | void |
fba45db2 | 4068 | disable_breakpoints_in_shlibs (int silent) |
c906108c | 4069 | { |
c5aa993b JM |
4070 | struct breakpoint *b; |
4071 | int disabled_shlib_breaks = 0; | |
c906108c SS |
4072 | |
4073 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4074 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4075 | { |
c906108c | 4076 | #if defined (PC_SOLIB) |
c5aa993b JM |
4077 | if (((b->type == bp_breakpoint) || |
4078 | (b->type == bp_hardware_breakpoint)) && | |
b5de0fa7 | 4079 | b->enable_state == bp_enabled && |
c5aa993b JM |
4080 | !b->duplicate && |
4081 | PC_SOLIB (b->address)) | |
4082 | { | |
b5de0fa7 | 4083 | b->enable_state = bp_shlib_disabled; |
c5aa993b JM |
4084 | if (!silent) |
4085 | { | |
4086 | if (!disabled_shlib_breaks) | |
4087 | { | |
4088 | target_terminal_ours_for_output (); | |
53a5351d | 4089 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
4090 | } |
4091 | disabled_shlib_breaks = 1; | |
53a5351d | 4092 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
4093 | } |
4094 | } | |
c906108c | 4095 | #endif |
c5aa993b | 4096 | } |
c906108c SS |
4097 | } |
4098 | ||
4099 | /* Try to reenable any breakpoints in shared libraries. */ | |
4100 | void | |
fba45db2 | 4101 | re_enable_breakpoints_in_shlibs (void) |
c906108c SS |
4102 | { |
4103 | struct breakpoint *b; | |
4104 | ||
4105 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 4106 | if (b->enable_state == bp_shlib_disabled) |
c5aa993b JM |
4107 | { |
4108 | char buf[1]; | |
c906108c | 4109 | |
c5aa993b JM |
4110 | /* Do not reenable the breakpoint if the shared library |
4111 | is still not mapped in. */ | |
4112 | if (target_read_memory (b->address, buf, 1) == 0) | |
b5de0fa7 | 4113 | b->enable_state = bp_enabled; |
c5aa993b | 4114 | } |
c906108c SS |
4115 | } |
4116 | ||
4117 | #endif | |
4118 | ||
4119 | static void | |
fba45db2 KB |
4120 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4121 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4122 | { |
c5aa993b | 4123 | struct breakpoint *b; |
c906108c | 4124 | struct symtabs_and_lines sals; |
c5aa993b JM |
4125 | struct cleanup *old_chain; |
4126 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4127 | char *addr_start = hookname; |
4128 | char *addr_end = NULL; | |
4129 | char **canonical = (char **) NULL; | |
4130 | int thread = -1; /* All threads. */ | |
4131 | ||
c906108c SS |
4132 | /* Set a breakpoint on the specified hook. */ |
4133 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
4134 | addr_end = hookname; | |
c5aa993b | 4135 | |
c906108c SS |
4136 | if (sals.nelts == 0) |
4137 | { | |
4138 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4139 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4140 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4141 | return; | |
4142 | } | |
4143 | if (sals.nelts != 1) | |
4144 | { | |
53a5351d | 4145 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4146 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4147 | return; | |
4148 | } | |
4149 | ||
53a5351d JM |
4150 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4151 | in case the following errors out. */ | |
b8c9b27d | 4152 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4153 | if (canonical != (char **) NULL) |
c906108c | 4154 | { |
b8c9b27d | 4155 | make_cleanup (xfree, canonical); |
c906108c SS |
4156 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4157 | if (canonical[0] != NULL) | |
b8c9b27d | 4158 | make_cleanup (xfree, canonical[0]); |
c906108c | 4159 | } |
c5aa993b | 4160 | |
c906108c | 4161 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4162 | |
c906108c | 4163 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4164 | if (canonical != (char **) NULL) |
c906108c | 4165 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4166 | |
4d28f7a8 | 4167 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4168 | set_breakpoint_count (breakpoint_count + 1); |
4169 | b->number = breakpoint_count; | |
4170 | b->cond = NULL; | |
53a5351d JM |
4171 | b->cond_string = (cond_string == NULL) ? |
4172 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4173 | b->thread = thread; |
c5aa993b JM |
4174 | |
4175 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4176 | b->addr_string = canonical[0]; |
4177 | else if (addr_start) | |
4178 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4179 | |
b5de0fa7 EZ |
4180 | b->enable_state = bp_enabled; |
4181 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4182 | |
c906108c SS |
4183 | if (dll_pathname == NULL) |
4184 | b->dll_pathname = NULL; | |
4185 | else | |
4186 | { | |
4187 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4188 | strcpy (b->dll_pathname, dll_pathname); | |
4189 | } | |
c5aa993b | 4190 | |
c906108c SS |
4191 | mention (b); |
4192 | do_cleanups (old_chain); | |
4193 | } | |
4194 | ||
4195 | void | |
fba45db2 KB |
4196 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4197 | char *dll_pathname, char *cond_string) | |
c906108c | 4198 | { |
53a5351d JM |
4199 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4200 | cond_string, bp_catch_load); | |
c906108c SS |
4201 | } |
4202 | ||
4203 | void | |
fba45db2 KB |
4204 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4205 | char *dll_pathname, char *cond_string) | |
c906108c | 4206 | { |
53a5351d JM |
4207 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4208 | cond_string, bp_catch_unload); | |
c906108c SS |
4209 | } |
4210 | ||
4211 | static void | |
fba45db2 KB |
4212 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4213 | enum bptype bp_kind) | |
c906108c | 4214 | { |
c5aa993b JM |
4215 | struct symtab_and_line sal; |
4216 | struct breakpoint *b; | |
4217 | int thread = -1; /* All threads. */ | |
4218 | ||
fe39c653 | 4219 | init_sal (&sal); |
c906108c SS |
4220 | sal.pc = 0; |
4221 | sal.symtab = NULL; | |
4222 | sal.line = 0; | |
c5aa993b | 4223 | |
4d28f7a8 | 4224 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4225 | set_breakpoint_count (breakpoint_count + 1); |
4226 | b->number = breakpoint_count; | |
4227 | b->cond = NULL; | |
53a5351d JM |
4228 | b->cond_string = (cond_string == NULL) ? |
4229 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4230 | b->thread = thread; |
4231 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4232 | b->enable_state = bp_enabled; |
4233 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4234 | b->forked_inferior_pid = 0; |
c5aa993b | 4235 | |
c906108c SS |
4236 | mention (b); |
4237 | } | |
4238 | ||
4239 | void | |
fba45db2 | 4240 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4241 | { |
4242 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4243 | } | |
c5aa993b | 4244 | |
c906108c | 4245 | void |
fba45db2 | 4246 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4247 | { |
4248 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4249 | } | |
4250 | ||
4251 | void | |
fba45db2 | 4252 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4253 | { |
c5aa993b JM |
4254 | struct symtab_and_line sal; |
4255 | struct breakpoint *b; | |
4256 | int thread = -1; /* All threads. */ | |
c906108c | 4257 | |
fe39c653 | 4258 | init_sal (&sal); |
c906108c SS |
4259 | sal.pc = 0; |
4260 | sal.symtab = NULL; | |
4261 | sal.line = 0; | |
4262 | ||
4d28f7a8 | 4263 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4264 | set_breakpoint_count (breakpoint_count + 1); |
4265 | b->number = breakpoint_count; | |
4266 | b->cond = NULL; | |
53a5351d JM |
4267 | b->cond_string = (cond_string == NULL) ? |
4268 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4269 | b->thread = thread; |
4270 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4271 | b->enable_state = bp_enabled; |
4272 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4273 | |
c906108c SS |
4274 | mention (b); |
4275 | } | |
4276 | ||
4277 | static int | |
fba45db2 | 4278 | hw_breakpoint_used_count (void) |
c906108c SS |
4279 | { |
4280 | register struct breakpoint *b; | |
4281 | int i = 0; | |
4282 | ||
4283 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4284 | { |
b5de0fa7 | 4285 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4286 | i++; |
4287 | } | |
c906108c SS |
4288 | |
4289 | return i; | |
4290 | } | |
4291 | ||
4292 | static int | |
fba45db2 | 4293 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c SS |
4294 | { |
4295 | register struct breakpoint *b; | |
4296 | int i = 0; | |
4297 | ||
4298 | *other_type_used = 0; | |
4299 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4300 | { |
b5de0fa7 | 4301 | if (b->enable_state == bp_enabled) |
c5aa993b JM |
4302 | { |
4303 | if (b->type == type) | |
4304 | i++; | |
4305 | else if ((b->type == bp_hardware_watchpoint || | |
4306 | b->type == bp_read_watchpoint || | |
4307 | b->type == bp_access_watchpoint) | |
b5de0fa7 | 4308 | && b->enable_state == bp_enabled) |
c5aa993b JM |
4309 | *other_type_used = 1; |
4310 | } | |
4311 | } | |
c906108c SS |
4312 | return i; |
4313 | } | |
4314 | ||
53a5351d JM |
4315 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4316 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4317 | |
53a5351d JM |
4318 | FIXME - This ought to be done by setting a temporary breakpoint |
4319 | that gets deleted automatically... */ | |
c906108c SS |
4320 | |
4321 | void | |
818dd999 | 4322 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c SS |
4323 | { |
4324 | register struct breakpoint *b; | |
4325 | ||
4326 | ALL_BREAKPOINTS (b) | |
4327 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
4328 | { |
4329 | b->address = pc; | |
b5de0fa7 | 4330 | b->enable_state = bp_enabled; |
818dd999 | 4331 | b->frame_id = frame_id; |
9f60f21b | 4332 | check_duplicates (b); |
c5aa993b JM |
4333 | return; |
4334 | } | |
c906108c SS |
4335 | } |
4336 | ||
4337 | void | |
fba45db2 | 4338 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4339 | { |
c5aa993b | 4340 | struct breakpoint *b; |
c906108c SS |
4341 | |
4342 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4343 | { |
4344 | if (((b->type == bp_watchpoint) | |
4345 | || (b->type == bp_hardware_watchpoint) | |
4346 | || (b->type == bp_read_watchpoint) | |
4347 | || (b->type == bp_access_watchpoint) | |
4348 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4349 | && (b->enable_state == bp_enabled)) |
c5aa993b | 4350 | { |
b5de0fa7 | 4351 | b->enable_state = bp_call_disabled; |
9f60f21b | 4352 | check_duplicates (b); |
c5aa993b JM |
4353 | } |
4354 | } | |
c906108c SS |
4355 | } |
4356 | ||
4357 | void | |
fba45db2 | 4358 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4359 | { |
c5aa993b | 4360 | struct breakpoint *b; |
c906108c SS |
4361 | |
4362 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4363 | { |
4364 | if (((b->type == bp_watchpoint) | |
4365 | || (b->type == bp_hardware_watchpoint) | |
4366 | || (b->type == bp_read_watchpoint) | |
4367 | || (b->type == bp_access_watchpoint) | |
4368 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4369 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4370 | { |
b5de0fa7 | 4371 | b->enable_state = bp_enabled; |
9f60f21b | 4372 | check_duplicates (b); |
c5aa993b JM |
4373 | } |
4374 | } | |
c906108c SS |
4375 | } |
4376 | ||
4377 | ||
4378 | /* Set a breakpoint that will evaporate an end of command | |
4379 | at address specified by SAL. | |
4380 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4381 | ||
4382 | struct breakpoint * | |
818dd999 | 4383 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4384 | enum bptype type) |
c906108c SS |
4385 | { |
4386 | register struct breakpoint *b; | |
4d28f7a8 | 4387 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4388 | b->enable_state = bp_enabled; |
4389 | b->disposition = disp_donttouch; | |
818dd999 | 4390 | b->frame_id = frame_id; |
c906108c SS |
4391 | |
4392 | /* If we're debugging a multi-threaded program, then we | |
4393 | want momentary breakpoints to be active in only a | |
4394 | single thread of control. */ | |
39f77062 KB |
4395 | if (in_thread_list (inferior_ptid)) |
4396 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4397 | |
4398 | return b; | |
4399 | } | |
c906108c | 4400 | \f |
c5aa993b | 4401 | |
c906108c SS |
4402 | /* Tell the user we have just set a breakpoint B. */ |
4403 | ||
4404 | static void | |
fba45db2 | 4405 | mention (struct breakpoint *b) |
c906108c SS |
4406 | { |
4407 | int say_where = 0; | |
3b31d625 | 4408 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4409 | struct ui_stream *stb; |
4410 | ||
4411 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4412 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
4413 | |
4414 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4415 | watchpoint) other than breakpoint creation. It should be possible to | |
4416 | clean this up and at the same time replace the random calls to | |
4417 | breakpoint_changed with this hook, as has already been done for | |
4418 | delete_breakpoint_hook and so on. */ | |
4419 | if (create_breakpoint_hook) | |
4420 | create_breakpoint_hook (b); | |
104c1213 | 4421 | breakpoint_create_event (b->number); |
c906108c SS |
4422 | |
4423 | switch (b->type) | |
4424 | { | |
4425 | case bp_none: | |
4426 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4427 | break; | |
8b93c638 JM |
4428 | case bp_watchpoint: |
4429 | ui_out_text (uiout, "Watchpoint "); | |
3b31d625 | 4430 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); |
8b93c638 JM |
4431 | ui_out_field_int (uiout, "number", b->number); |
4432 | ui_out_text (uiout, ": "); | |
4433 | print_expression (b->exp, stb->stream); | |
4434 | ui_out_field_stream (uiout, "exp", stb); | |
3b31d625 | 4435 | do_cleanups (ui_out_chain); |
8b93c638 JM |
4436 | break; |
4437 | case bp_hardware_watchpoint: | |
4438 | ui_out_text (uiout, "Hardware watchpoint "); | |
3b31d625 | 4439 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); |
8b93c638 JM |
4440 | ui_out_field_int (uiout, "number", b->number); |
4441 | ui_out_text (uiout, ": "); | |
4442 | print_expression (b->exp, stb->stream); | |
4443 | ui_out_field_stream (uiout, "exp", stb); | |
3b31d625 | 4444 | do_cleanups (ui_out_chain); |
8b93c638 | 4445 | break; |
8b93c638 JM |
4446 | case bp_read_watchpoint: |
4447 | ui_out_text (uiout, "Hardware read watchpoint "); | |
3b31d625 | 4448 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); |
8b93c638 JM |
4449 | ui_out_field_int (uiout, "number", b->number); |
4450 | ui_out_text (uiout, ": "); | |
4451 | print_expression (b->exp, stb->stream); | |
4452 | ui_out_field_stream (uiout, "exp", stb); | |
3b31d625 | 4453 | do_cleanups (ui_out_chain); |
8b93c638 JM |
4454 | break; |
4455 | case bp_access_watchpoint: | |
4456 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
3b31d625 | 4457 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); |
8b93c638 JM |
4458 | ui_out_field_int (uiout, "number", b->number); |
4459 | ui_out_text (uiout, ": "); | |
4460 | print_expression (b->exp, stb->stream); | |
4461 | ui_out_field_stream (uiout, "exp", stb); | |
3b31d625 | 4462 | do_cleanups (ui_out_chain); |
8b93c638 | 4463 | break; |
c906108c | 4464 | case bp_breakpoint: |
9dc5e2a9 | 4465 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
4466 | { |
4467 | say_where = 0; | |
4468 | break; | |
4469 | } | |
c906108c SS |
4470 | printf_filtered ("Breakpoint %d", b->number); |
4471 | say_where = 1; | |
4472 | break; | |
4473 | case bp_hardware_breakpoint: | |
9dc5e2a9 | 4474 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
4475 | { |
4476 | say_where = 0; | |
4477 | break; | |
4478 | } | |
c906108c SS |
4479 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
4480 | say_where = 1; | |
4481 | break; | |
4482 | case bp_catch_load: | |
4483 | case bp_catch_unload: | |
4484 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
4485 | b->number, |
4486 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
4487 | (b->dll_pathname != NULL) ? |
4488 | b->dll_pathname : "<any library>"); | |
c906108c SS |
4489 | break; |
4490 | case bp_catch_fork: | |
4491 | case bp_catch_vfork: | |
4492 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4493 | b->number, |
4494 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
4495 | break; |
4496 | case bp_catch_exec: | |
4497 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 4498 | b->number); |
c906108c SS |
4499 | break; |
4500 | case bp_catch_catch: | |
4501 | case bp_catch_throw: | |
4502 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4503 | b->number, |
4504 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
4505 | break; |
4506 | ||
4507 | case bp_until: | |
4508 | case bp_finish: | |
4509 | case bp_longjmp: | |
4510 | case bp_longjmp_resume: | |
4511 | case bp_step_resume: | |
4512 | case bp_through_sigtramp: | |
4513 | case bp_call_dummy: | |
4514 | case bp_watchpoint_scope: | |
4515 | case bp_shlib_event: | |
c4093a6a | 4516 | case bp_thread_event: |
1900040c | 4517 | case bp_overlay_event: |
c906108c SS |
4518 | break; |
4519 | } | |
4520 | if (say_where) | |
4521 | { | |
4522 | if (addressprint || b->source_file == NULL) | |
4523 | { | |
4524 | printf_filtered (" at "); | |
4525 | print_address_numeric (b->address, 1, gdb_stdout); | |
4526 | } | |
4527 | if (b->source_file) | |
4528 | printf_filtered (": file %s, line %d.", | |
4529 | b->source_file, b->line_number); | |
c906108c | 4530 | } |
8b93c638 | 4531 | do_cleanups (old_chain); |
9dc5e2a9 | 4532 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4533 | return; |
c906108c SS |
4534 | printf_filtered ("\n"); |
4535 | } | |
c906108c | 4536 | \f |
c5aa993b | 4537 | |
c3f6f71d JM |
4538 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4539 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4540 | COND[i] and COND_STRING[i] values. | |
4541 | ||
4542 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4543 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4544 | array contents). If the function fails (error() is called), the | |
4545 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4546 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4547 | |
4548 | static void | |
c3f6f71d JM |
4549 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4550 | struct expression **cond, char **cond_string, | |
4551 | enum bptype type, enum bpdisp disposition, | |
4552 | int thread, int ignore_count, int from_tty) | |
c906108c | 4553 | { |
c3f6f71d JM |
4554 | if (type == bp_hardware_breakpoint) |
4555 | { | |
4556 | int i = hw_breakpoint_used_count (); | |
4557 | int target_resources_ok = | |
4558 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4559 | i + sals.nelts, 0); | |
4560 | if (target_resources_ok == 0) | |
4561 | error ("No hardware breakpoint support in the target."); | |
4562 | else if (target_resources_ok < 0) | |
4563 | error ("Hardware breakpoints used exceeds limit."); | |
4564 | } | |
c906108c | 4565 | |
c3f6f71d JM |
4566 | /* Now set all the breakpoints. */ |
4567 | { | |
4568 | int i; | |
4569 | for (i = 0; i < sals.nelts; i++) | |
4570 | { | |
4571 | struct breakpoint *b; | |
4572 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4573 | |
c3f6f71d JM |
4574 | if (from_tty) |
4575 | describe_other_breakpoints (sal.pc, sal.section); | |
4576 | ||
4d28f7a8 | 4577 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4578 | set_breakpoint_count (breakpoint_count + 1); |
4579 | b->number = breakpoint_count; | |
c3f6f71d JM |
4580 | b->cond = cond[i]; |
4581 | b->thread = thread; | |
d8ef46f5 DJ |
4582 | if (addr_string[i]) |
4583 | b->addr_string = addr_string[i]; | |
4584 | else | |
4585 | /* addr_string has to be used or breakpoint_re_set will delete | |
4586 | me. */ | |
4587 | xasprintf (&b->addr_string, "*0x%s", paddr (b->address)); | |
c3f6f71d JM |
4588 | b->cond_string = cond_string[i]; |
4589 | b->ignore_count = ignore_count; | |
b5de0fa7 | 4590 | b->enable_state = bp_enabled; |
c3f6f71d JM |
4591 | b->disposition = disposition; |
4592 | mention (b); | |
4593 | } | |
4594 | } | |
4595 | } | |
c906108c | 4596 | |
c3f6f71d JM |
4597 | /* Parse ARG which is assumed to be a SAL specification possibly |
4598 | followed by conditionals. On return, SALS contains an array of SAL | |
4599 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4600 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4601 | |
c3f6f71d JM |
4602 | void |
4603 | parse_breakpoint_sals (char **address, | |
4604 | struct symtabs_and_lines *sals, | |
4605 | char ***addr_string) | |
4606 | { | |
4607 | char *addr_start = *address; | |
4608 | *addr_string = NULL; | |
4609 | /* If no arg given, or if first arg is 'if ', use the default | |
4610 | breakpoint. */ | |
4611 | if ((*address) == NULL | |
4612 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4613 | { |
4614 | if (default_breakpoint_valid) | |
4615 | { | |
c3f6f71d | 4616 | struct symtab_and_line sal; |
fe39c653 | 4617 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 4618 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
4619 | xmalloc (sizeof (struct symtab_and_line)); |
4620 | sal.pc = default_breakpoint_address; | |
4621 | sal.line = default_breakpoint_line; | |
4622 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4623 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4624 | sals->sals[0] = sal; |
4625 | sals->nelts = 1; | |
c906108c SS |
4626 | } |
4627 | else | |
4628 | error ("No default breakpoint address now."); | |
4629 | } | |
4630 | else | |
4631 | { | |
c906108c | 4632 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4633 | current_source_symtab (which is decode_line_1's default). This |
4634 | should produce the results we want almost all of the time while | |
1aeae86e AF |
4635 | leaving default_breakpoint_* alone. |
4636 | ObjC: However, don't match an Objective-C method name which | |
4637 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 4638 | |
c214a6fd | 4639 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 4640 | |
c906108c | 4641 | if (default_breakpoint_valid |
0378c332 | 4642 | && (!cursal.symtab |
1aeae86e AF |
4643 | || ((strchr ("+-", (*address)[0]) != NULL) |
4644 | && ((*address)[1] != '[')))) | |
c3f6f71d JM |
4645 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
4646 | default_breakpoint_line, addr_string); | |
c906108c | 4647 | else |
389e51db | 4648 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); |
c906108c | 4649 | } |
c3f6f71d JM |
4650 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4651 | if (sals->nelts > 0 && *addr_string == NULL) | |
4652 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4653 | if (addr_start != (*address)) | |
c906108c | 4654 | { |
c3f6f71d JM |
4655 | int i; |
4656 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4657 | { |
c3f6f71d JM |
4658 | /* Add the string if not present. */ |
4659 | if ((*addr_string)[i] == NULL) | |
4660 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4661 | } |
4662 | } | |
c3f6f71d | 4663 | } |
c906108c | 4664 | |
c906108c | 4665 | |
c3f6f71d JM |
4666 | /* Convert each SAL into a real PC. Verify that the PC can be |
4667 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4668 | |
c3f6f71d JM |
4669 | void |
4670 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, | |
4671 | char *address) | |
4672 | { | |
4673 | int i; | |
4674 | for (i = 0; i < sals->nelts; i++) | |
4675 | { | |
4676 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4677 | |
4678 | /* It's possible for the PC to be nonzero, but still an illegal | |
4679 | value on some targets. | |
4680 | ||
4681 | For example, on HP-UX if you start gdb, and before running the | |
4682 | inferior you try to set a breakpoint on a shared library function | |
4683 | "foo" where the inferior doesn't call "foo" directly but does | |
4684 | pass its address to another function call, then we do find a | |
4685 | minimal symbol for the "foo", but it's address is invalid. | |
4686 | (Appears to be an index into a table that the loader sets up | |
4687 | when the inferior is run.) | |
4688 | ||
4689 | Give the target a chance to bless sals.sals[i].pc before we | |
4690 | try to make a breakpoint for it. */ | |
c3f6f71d | 4691 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4692 | { |
c3f6f71d JM |
4693 | if (address == NULL) |
4694 | error ("Cannot break without a running program."); | |
4695 | else | |
4696 | error ("Cannot break on %s without a running program.", | |
4697 | address); | |
c5aa993b | 4698 | } |
c3f6f71d JM |
4699 | } |
4700 | } | |
4701 | ||
4702 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4703 | flag: first bit : 0 non-temporary, 1 temporary. | |
4704 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4705 | |
c3f6f71d | 4706 | static void |
fba45db2 | 4707 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d JM |
4708 | { |
4709 | int tempflag, hardwareflag; | |
4710 | struct symtabs_and_lines sals; | |
4711 | register struct expression **cond = 0; | |
4712 | /* Pointers in arg to the start, and one past the end, of the | |
4713 | condition. */ | |
4714 | char **cond_string = (char **) NULL; | |
4715 | char *addr_start = arg; | |
4716 | char **addr_string; | |
4717 | struct cleanup *old_chain; | |
4718 | struct cleanup *breakpoint_chain = NULL; | |
4719 | int i; | |
4720 | int thread = -1; | |
4721 | int ignore_count = 0; | |
4722 | ||
4723 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4724 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4725 | |
c3f6f71d JM |
4726 | sals.sals = NULL; |
4727 | sals.nelts = 0; | |
4728 | addr_string = NULL; | |
4729 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4730 | ||
4731 | if (!sals.nelts) | |
4732 | return; | |
4733 | ||
4734 | /* Create a chain of things that always need to be cleaned up. */ | |
4735 | old_chain = make_cleanup (null_cleanup, 0); | |
4736 | ||
4737 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4738 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4739 | |
4740 | /* Cleanup the addr_string array but not its contents. */ | |
b8c9b27d | 4741 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4742 | |
4743 | /* Allocate space for all the cond expressions. */ | |
4744 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4745 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4746 | |
4747 | /* Allocate space for all the cond strings. */ | |
4748 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4749 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4750 | |
4751 | /* ----------------------------- SNIP ----------------------------- | |
4752 | Anything added to the cleanup chain beyond this point is assumed | |
4753 | to be part of a breakpoint. If the breakpoint create succeeds | |
4754 | then the memory is not reclaimed. */ | |
4755 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4756 | ||
4757 | /* Mark the contents of the addr_string for cleanup. These go on | |
4758 | the breakpoint_chain and only occure if the breakpoint create | |
4759 | fails. */ | |
4760 | for (i = 0; i < sals.nelts; i++) | |
4761 | { | |
4762 | if (addr_string[i] != NULL) | |
b8c9b27d | 4763 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
4764 | } |
4765 | ||
4766 | /* Resolve all line numbers to PC's and verify that the addresses | |
4767 | are ok for the target. */ | |
4768 | breakpoint_sals_to_pc (&sals, addr_start); | |
4769 | ||
4770 | /* Verify that condition can be parsed, before setting any | |
4771 | breakpoints. Allocate a separate condition expression for each | |
4772 | breakpoint. */ | |
4773 | thread = -1; /* No specific thread yet */ | |
4774 | for (i = 0; i < sals.nelts; i++) | |
4775 | { | |
4776 | char *tok = arg; | |
c906108c SS |
4777 | while (tok && *tok) |
4778 | { | |
c3f6f71d JM |
4779 | char *end_tok; |
4780 | int toklen; | |
4781 | char *cond_start = NULL; | |
4782 | char *cond_end = NULL; | |
c906108c SS |
4783 | while (*tok == ' ' || *tok == '\t') |
4784 | tok++; | |
4785 | ||
4786 | end_tok = tok; | |
4787 | ||
4788 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4789 | end_tok++; | |
4790 | ||
4791 | toklen = end_tok - tok; | |
4792 | ||
4793 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4794 | { | |
4795 | tok = cond_start = end_tok + 1; | |
c3f6f71d | 4796 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
b8c9b27d | 4797 | make_cleanup (xfree, cond[i]); |
c906108c | 4798 | cond_end = tok; |
c3f6f71d | 4799 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
b8c9b27d | 4800 | make_cleanup (xfree, cond_string[i]); |
c906108c SS |
4801 | } |
4802 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4803 | { | |
4804 | char *tmptok; | |
4805 | ||
4806 | tok = end_tok + 1; | |
4807 | tmptok = tok; | |
4808 | thread = strtol (tok, &tok, 0); | |
4809 | if (tok == tmptok) | |
4810 | error ("Junk after thread keyword."); | |
4811 | if (!valid_thread_id (thread)) | |
4812 | error ("Unknown thread %d\n", thread); | |
4813 | } | |
4814 | else | |
4815 | error ("Junk at end of arguments."); | |
4816 | } | |
4817 | } | |
c906108c | 4818 | |
c3f6f71d JM |
4819 | create_breakpoints (sals, addr_string, cond, cond_string, |
4820 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 4821 | tempflag ? disp_del : disp_donttouch, |
c3f6f71d JM |
4822 | thread, ignore_count, from_tty); |
4823 | ||
4824 | if (sals.nelts > 1) | |
4825 | { | |
4826 | warning ("Multiple breakpoints were set."); | |
4827 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4828 | } |
c3f6f71d JM |
4829 | /* That's it. Discard the cleanups for data inserted into the |
4830 | breakpoint. */ | |
4831 | discard_cleanups (breakpoint_chain); | |
4832 | /* But cleanup everything else. */ | |
4833 | do_cleanups (old_chain); | |
4834 | } | |
c906108c | 4835 | |
c3f6f71d JM |
4836 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
4837 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 4838 | |
c3f6f71d JM |
4839 | struct captured_breakpoint_args |
4840 | { | |
4841 | char *address; | |
4842 | char *condition; | |
4843 | int hardwareflag; | |
4844 | int tempflag; | |
4845 | int thread; | |
4846 | int ignore_count; | |
4847 | }; | |
4848 | ||
4849 | static int | |
4850 | do_captured_breakpoint (void *data) | |
4851 | { | |
4852 | struct captured_breakpoint_args *args = data; | |
4853 | struct symtabs_and_lines sals; | |
4854 | register struct expression **cond; | |
4855 | struct cleanup *old_chain; | |
4856 | struct cleanup *breakpoint_chain = NULL; | |
4857 | int i; | |
4858 | char **addr_string; | |
4859 | char **cond_string; | |
4860 | ||
4861 | char *address_end; | |
4862 | ||
4863 | /* Parse the source and lines spec. Delay check that the expression | |
4864 | didn't contain trailing garbage until after cleanups are in | |
4865 | place. */ | |
4866 | sals.sals = NULL; | |
4867 | sals.nelts = 0; | |
4868 | address_end = args->address; | |
4869 | addr_string = NULL; | |
4870 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
4871 | ||
4872 | if (!sals.nelts) | |
4873 | return GDB_RC_NONE; | |
4874 | ||
4875 | /* Create a chain of things at always need to be cleaned up. */ | |
4876 | old_chain = make_cleanup (null_cleanup, 0); | |
4877 | ||
4878 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 4879 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4880 | |
4881 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4882 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4883 | |
4884 | /* Allocate space for all the cond expressions. */ | |
4885 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4886 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4887 | |
4888 | /* Allocate space for all the cond strings. */ | |
4889 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4890 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4891 | |
4892 | /* ----------------------------- SNIP ----------------------------- | |
4893 | Anything added to the cleanup chain beyond this point is assumed | |
4894 | to be part of a breakpoint. If the breakpoint create goes | |
4895 | through then that memory is not cleaned up. */ | |
4896 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4897 | ||
4898 | /* Mark the contents of the addr_string for cleanup. These go on | |
4899 | the breakpoint_chain and only occure if the breakpoint create | |
4900 | fails. */ | |
c906108c SS |
4901 | for (i = 0; i < sals.nelts; i++) |
4902 | { | |
c3f6f71d | 4903 | if (addr_string[i] != NULL) |
b8c9b27d | 4904 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
4905 | } |
4906 | ||
c3f6f71d JM |
4907 | /* Wait until now before checking for garbage at the end of the |
4908 | address. That way cleanups can take care of freeing any | |
4909 | memory. */ | |
4910 | if (*address_end != '\0') | |
4911 | error ("Garbage %s following breakpoint address", address_end); | |
4912 | ||
4913 | /* Resolve all line numbers to PC's. */ | |
4914 | breakpoint_sals_to_pc (&sals, args->address); | |
4915 | ||
4916 | /* Verify that conditions can be parsed, before setting any | |
4917 | breakpoints. */ | |
4918 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 4919 | { |
c3f6f71d JM |
4920 | if (args->condition != NULL) |
4921 | { | |
4922 | char *tok = args->condition; | |
4923 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
4924 | if (*tok != '\0') | |
4925 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 4926 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
4927 | cond_string[i] = xstrdup (args->condition); |
4928 | } | |
c906108c | 4929 | } |
c3f6f71d JM |
4930 | |
4931 | create_breakpoints (sals, addr_string, cond, cond_string, | |
4932 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 4933 | args->tempflag ? disp_del : disp_donttouch, |
c3f6f71d JM |
4934 | args->thread, args->ignore_count, 0/*from-tty*/); |
4935 | ||
4936 | /* That's it. Discard the cleanups for data inserted into the | |
4937 | breakpoint. */ | |
4938 | discard_cleanups (breakpoint_chain); | |
4939 | /* But cleanup everything else. */ | |
c906108c | 4940 | do_cleanups (old_chain); |
c3f6f71d | 4941 | return GDB_RC_OK; |
c906108c SS |
4942 | } |
4943 | ||
c3f6f71d JM |
4944 | enum gdb_rc |
4945 | gdb_breakpoint (char *address, char *condition, | |
4946 | int hardwareflag, int tempflag, | |
4947 | int thread, int ignore_count) | |
4948 | { | |
4949 | struct captured_breakpoint_args args; | |
4950 | args.address = address; | |
4951 | args.condition = condition; | |
4952 | args.hardwareflag = hardwareflag; | |
4953 | args.tempflag = tempflag; | |
4954 | args.thread = thread; | |
4955 | args.ignore_count = ignore_count; | |
4956 | return catch_errors (do_captured_breakpoint, &args, | |
4957 | NULL, RETURN_MASK_ALL); | |
4958 | } | |
4959 | ||
4960 | ||
c906108c | 4961 | static void |
fba45db2 | 4962 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
4963 | { |
4964 | struct frame_info *frame; | |
4965 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
4966 | char *extra_args = NULL; |
4967 | char *level_arg; | |
4968 | char *addr_string; | |
c906108c SS |
4969 | int extra_args_len = 0, if_arg = 0; |
4970 | ||
4971 | if (!arg || | |
4972 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4973 | { | |
4974 | ||
4975 | if (default_breakpoint_valid) | |
4976 | { | |
6e7f8b9c | 4977 | if (deprecated_selected_frame) |
c906108c | 4978 | { |
bdd78e62 | 4979 | selected_pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
4980 | if (arg) |
4981 | if_arg = 1; | |
4982 | } | |
4983 | else | |
4984 | error ("No selected frame."); | |
4985 | } | |
4986 | else | |
4987 | error ("No default breakpoint address now."); | |
4988 | } | |
4989 | else | |
4990 | { | |
4991 | extra_args = strchr (arg, ' '); | |
4992 | if (extra_args) | |
4993 | { | |
4994 | extra_args++; | |
4995 | extra_args_len = strlen (extra_args); | |
4996 | level_arg = (char *) xmalloc (extra_args - arg); | |
4997 | strncpy (level_arg, arg, extra_args - arg - 1); | |
4998 | level_arg[extra_args - arg - 1] = '\0'; | |
4999 | } | |
5000 | else | |
5001 | { | |
5002 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
5003 | strcpy (level_arg, arg); | |
5004 | } | |
5005 | ||
5006 | frame = parse_frame_specification (level_arg); | |
5007 | if (frame) | |
bdd78e62 | 5008 | selected_pc = get_frame_pc (frame); |
c906108c SS |
5009 | else |
5010 | selected_pc = 0; | |
5011 | } | |
5012 | if (if_arg) | |
5013 | { | |
5014 | extra_args = arg; | |
c5aa993b | 5015 | extra_args_len = strlen (arg); |
c906108c SS |
5016 | } |
5017 | ||
5018 | if (selected_pc) | |
5019 | { | |
c5aa993b | 5020 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c SS |
5021 | { |
5022 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
5023 | if (extra_args_len) | |
d4f3574e | 5024 | sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5025 | else |
d4f3574e | 5026 | sprintf (addr_string, "*0x%s", paddr_nz (high)); |
c906108c | 5027 | break_command_1 (addr_string, flag, from_tty); |
b8c9b27d | 5028 | xfree (addr_string); |
c906108c SS |
5029 | } |
5030 | else | |
5031 | error ("No function contains the specified address"); | |
5032 | } | |
5033 | else | |
5034 | error ("Unable to set breakpoint at procedure exit"); | |
5035 | } | |
5036 | ||
5037 | ||
5038 | static void | |
fba45db2 | 5039 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5040 | { |
5041 | char *addr_string, *break_string, *beg_addr_string; | |
5042 | CORE_ADDR low, high; | |
5043 | struct symtabs_and_lines sals; | |
5044 | struct symtab_and_line sal; | |
5045 | struct cleanup *old_chain; | |
7f7e9482 | 5046 | char *extra_args = NULL; |
c906108c SS |
5047 | int extra_args_len = 0; |
5048 | int i, if_arg = 0; | |
5049 | ||
5050 | if (!arg || | |
5051 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5052 | { | |
5053 | if (default_breakpoint_valid) | |
5054 | { | |
6e7f8b9c | 5055 | if (deprecated_selected_frame) |
c906108c SS |
5056 | { |
5057 | addr_string = (char *) xmalloc (15); | |
bdd78e62 AC |
5058 | sprintf (addr_string, "*0x%s", |
5059 | paddr_nz (get_frame_pc (deprecated_selected_frame))); | |
c906108c SS |
5060 | if (arg) |
5061 | if_arg = 1; | |
5062 | } | |
5063 | else | |
5064 | error ("No selected frame."); | |
5065 | } | |
5066 | else | |
5067 | error ("No default breakpoint address now."); | |
5068 | } | |
5069 | else | |
5070 | { | |
5071 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5072 | strcpy (addr_string, arg); | |
5073 | } | |
5074 | ||
5075 | if (if_arg) | |
5076 | { | |
5077 | extra_args = arg; | |
c5aa993b JM |
5078 | extra_args_len = strlen (arg); |
5079 | } | |
5080 | else if (arg) | |
5081 | { | |
5082 | /* get the stuff after the function name or address */ | |
5083 | extra_args = strchr (arg, ' '); | |
5084 | if (extra_args) | |
5085 | { | |
5086 | extra_args++; | |
5087 | extra_args_len = strlen (extra_args); | |
5088 | } | |
c906108c | 5089 | } |
c906108c SS |
5090 | |
5091 | sals.sals = NULL; | |
5092 | sals.nelts = 0; | |
5093 | ||
c5aa993b JM |
5094 | beg_addr_string = addr_string; |
5095 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
5096 | (char ***) NULL); | |
c906108c | 5097 | |
b8c9b27d KB |
5098 | xfree (beg_addr_string); |
5099 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
5100 | for (i = 0; (i < sals.nelts); i++) |
5101 | { | |
5102 | sal = sals.sals[i]; | |
c5aa993b | 5103 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c SS |
5104 | { |
5105 | break_string = (char *) xmalloc (extra_args_len + 26); | |
5106 | if (extra_args_len) | |
d4f3574e | 5107 | sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5108 | else |
d4f3574e | 5109 | sprintf (break_string, "*0x%s", paddr_nz (high)); |
c906108c | 5110 | break_command_1 (break_string, flag, from_tty); |
b8c9b27d | 5111 | xfree (break_string); |
c906108c SS |
5112 | } |
5113 | else | |
5114 | error ("No function contains the specified address"); | |
5115 | } | |
5116 | if (sals.nelts > 1) | |
5117 | { | |
53a5351d JM |
5118 | warning ("Multiple breakpoints were set.\n"); |
5119 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5120 | } |
c5aa993b | 5121 | do_cleanups (old_chain); |
c906108c SS |
5122 | } |
5123 | ||
5124 | ||
5125 | /* Helper function for break_command_1 and disassemble_command. */ | |
5126 | ||
5127 | void | |
fba45db2 | 5128 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5129 | { |
5130 | CORE_ADDR pc; | |
5131 | ||
5132 | if (sal->pc == 0 && sal->symtab != NULL) | |
5133 | { | |
5134 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5135 | error ("No line %d in file \"%s\".", | |
5136 | sal->line, sal->symtab->filename); | |
5137 | sal->pc = pc; | |
5138 | } | |
5139 | ||
5140 | if (sal->section == 0 && sal->symtab != NULL) | |
5141 | { | |
5142 | struct blockvector *bv; | |
c5aa993b JM |
5143 | struct block *b; |
5144 | struct symbol *sym; | |
5145 | int index; | |
c906108c | 5146 | |
c5aa993b | 5147 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5148 | if (bv != NULL) |
5149 | { | |
c5aa993b | 5150 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5151 | sym = block_function (b); |
5152 | if (sym != NULL) | |
5153 | { | |
5154 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5155 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5156 | } | |
5157 | else | |
5158 | { | |
5159 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5160 | have to look harder. This case can be executed if we have |
5161 | line numbers but no functions (as can happen in assembly | |
5162 | source). */ | |
c906108c | 5163 | |
c5aa993b | 5164 | struct minimal_symbol *msym; |
c906108c SS |
5165 | |
5166 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5167 | if (msym) | |
5168 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5169 | } | |
5170 | } | |
5171 | } | |
5172 | } | |
5173 | ||
5174 | void | |
fba45db2 | 5175 | break_command (char *arg, int from_tty) |
c906108c SS |
5176 | { |
5177 | break_command_1 (arg, 0, from_tty); | |
5178 | } | |
5179 | ||
502fd408 | 5180 | void |
fba45db2 | 5181 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5182 | { |
5183 | break_at_finish_command_1 (arg, 0, from_tty); | |
5184 | } | |
5185 | ||
502fd408 | 5186 | void |
fba45db2 | 5187 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5188 | { |
5189 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5190 | } | |
5191 | ||
5192 | void | |
fba45db2 | 5193 | tbreak_command (char *arg, int from_tty) |
c906108c SS |
5194 | { |
5195 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5196 | } | |
5197 | ||
502fd408 | 5198 | void |
fba45db2 | 5199 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5200 | { |
5201 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5202 | } | |
5203 | ||
5204 | static void | |
fba45db2 | 5205 | hbreak_command (char *arg, int from_tty) |
c906108c SS |
5206 | { |
5207 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
5208 | } | |
5209 | ||
5210 | static void | |
fba45db2 | 5211 | thbreak_command (char *arg, int from_tty) |
c906108c SS |
5212 | { |
5213 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
5214 | } | |
5215 | ||
5216 | static void | |
fba45db2 | 5217 | stop_command (char *arg, int from_tty) |
c906108c SS |
5218 | { |
5219 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5220 | Usage: stop in <function | address>\n\ | |
5221 | stop at <line>\n"); | |
5222 | } | |
5223 | ||
5224 | static void | |
fba45db2 | 5225 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5226 | { |
5227 | int badInput = 0; | |
5228 | ||
c5aa993b | 5229 | if (arg == (char *) NULL) |
c906108c SS |
5230 | badInput = 1; |
5231 | else if (*arg != '*') | |
5232 | { | |
5233 | char *argptr = arg; | |
5234 | int hasColon = 0; | |
5235 | ||
53a5351d JM |
5236 | /* look for a ':'. If this is a line number specification, then |
5237 | say it is bad, otherwise, it should be an address or | |
5238 | function/method name */ | |
c906108c | 5239 | while (*argptr && !hasColon) |
c5aa993b JM |
5240 | { |
5241 | hasColon = (*argptr == ':'); | |
5242 | argptr++; | |
5243 | } | |
c906108c SS |
5244 | |
5245 | if (hasColon) | |
c5aa993b | 5246 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5247 | else |
c5aa993b | 5248 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5249 | } |
5250 | ||
5251 | if (badInput) | |
c5aa993b | 5252 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
5253 | else |
5254 | break_command_1 (arg, 0, from_tty); | |
5255 | } | |
5256 | ||
5257 | static void | |
fba45db2 | 5258 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5259 | { |
5260 | int badInput = 0; | |
5261 | ||
c5aa993b | 5262 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5263 | badInput = 1; |
5264 | else | |
5265 | { | |
5266 | char *argptr = arg; | |
5267 | int hasColon = 0; | |
5268 | ||
5269 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5270 | it is probably a line number. */ |
c906108c | 5271 | while (*argptr && !hasColon) |
c5aa993b JM |
5272 | { |
5273 | hasColon = (*argptr == ':'); | |
5274 | argptr++; | |
5275 | } | |
c906108c SS |
5276 | |
5277 | if (hasColon) | |
c5aa993b | 5278 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5279 | else |
c5aa993b | 5280 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5281 | } |
5282 | ||
5283 | if (badInput) | |
c5aa993b | 5284 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
5285 | else |
5286 | break_command_1 (arg, 0, from_tty); | |
5287 | } | |
5288 | ||
5289 | /* ARGSUSED */ | |
53a5351d JM |
5290 | /* accessflag: hw_write: watch write, |
5291 | hw_read: watch read, | |
5292 | hw_access: watch access (read or write) */ | |
c906108c | 5293 | static void |
fba45db2 | 5294 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5295 | { |
5296 | struct breakpoint *b; | |
5297 | struct symtab_and_line sal; | |
5298 | struct expression *exp; | |
5299 | struct block *exp_valid_block; | |
5300 | struct value *val, *mark; | |
5301 | struct frame_info *frame; | |
5302 | struct frame_info *prev_frame = NULL; | |
5303 | char *exp_start = NULL; | |
5304 | char *exp_end = NULL; | |
5305 | char *tok, *end_tok; | |
5306 | int toklen; | |
5307 | char *cond_start = NULL; | |
5308 | char *cond_end = NULL; | |
5309 | struct expression *cond = NULL; | |
5310 | int i, other_type_used, target_resources_ok = 0; | |
5311 | enum bptype bp_type; | |
5312 | int mem_cnt = 0; | |
5313 | ||
fe39c653 | 5314 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5315 | |
c906108c SS |
5316 | /* Parse arguments. */ |
5317 | innermost_block = NULL; | |
5318 | exp_start = arg; | |
5319 | exp = parse_exp_1 (&arg, 0, 0); | |
5320 | exp_end = arg; | |
5321 | exp_valid_block = innermost_block; | |
5322 | mark = value_mark (); | |
5323 | val = evaluate_expression (exp); | |
5324 | release_value (val); | |
5325 | if (VALUE_LAZY (val)) | |
5326 | value_fetch_lazy (val); | |
5327 | ||
5328 | tok = arg; | |
5329 | while (*tok == ' ' || *tok == '\t') | |
5330 | tok++; | |
5331 | end_tok = tok; | |
5332 | ||
5333 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5334 | end_tok++; | |
5335 | ||
5336 | toklen = end_tok - tok; | |
5337 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5338 | { | |
5339 | tok = cond_start = end_tok + 1; | |
5340 | cond = parse_exp_1 (&tok, 0, 0); | |
5341 | cond_end = tok; | |
5342 | } | |
5343 | if (*tok) | |
c5aa993b | 5344 | error ("Junk at end of command."); |
c906108c | 5345 | |
53a5351d | 5346 | if (accessflag == hw_read) |
c5aa993b | 5347 | bp_type = bp_read_watchpoint; |
53a5351d | 5348 | else if (accessflag == hw_access) |
c5aa993b JM |
5349 | bp_type = bp_access_watchpoint; |
5350 | else | |
5351 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5352 | |
5353 | mem_cnt = can_use_hardware_watchpoint (val); | |
5354 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5355 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5356 | if (mem_cnt != 0) |
5357 | { | |
5358 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5359 | target_resources_ok = |
5360 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5361 | other_type_used); | |
c5aa993b | 5362 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5363 | error ("Target does not support this type of hardware watchpoint."); |
5364 | ||
c5aa993b | 5365 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5366 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5367 | } |
c906108c SS |
5368 | |
5369 | #if defined(HPUXHPPA) | |
c5aa993b | 5370 | /* On HP-UX if you set a h/w |
c906108c SS |
5371 | watchpoint before the "run" command, the inferior dies with a e.g., |
5372 | SIGILL once you start it. I initially believed this was due to a | |
5373 | bad interaction between page protection traps and the initial | |
5374 | startup sequence by the dynamic linker. | |
5375 | ||
5376 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5377 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5378 | yet, which forced slow watches before a "run" or "attach", and it |
5379 | still fails somewhere in the startup code. | |
5380 | ||
5381 | Until I figure out what's happening, I'm disallowing watches altogether | |
5382 | before the "run" or "attach" command. We'll tell the user they must | |
5383 | set watches after getting the program started. */ | |
c5aa993b | 5384 | if (!target_has_execution) |
c906108c SS |
5385 | { |
5386 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5387 | return; | |
5388 | } | |
5389 | #endif /* HPUXHPPA */ | |
c5aa993b | 5390 | |
4d28f7a8 KB |
5391 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5392 | watchpoint could not be set. */ | |
5393 | if (!mem_cnt || target_resources_ok <= 0) | |
5394 | bp_type = bp_watchpoint; | |
5395 | ||
c906108c | 5396 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5397 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5398 | set_breakpoint_count (breakpoint_count + 1); |
5399 | b->number = breakpoint_count; | |
b5de0fa7 | 5400 | b->disposition = disp_donttouch; |
c906108c SS |
5401 | b->exp = exp; |
5402 | b->exp_valid_block = exp_valid_block; | |
5403 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5404 | b->val = val; | |
5405 | b->cond = cond; | |
5406 | if (cond_start) | |
5407 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5408 | else | |
5409 | b->cond_string = 0; | |
c5aa993b | 5410 | |
c906108c SS |
5411 | frame = block_innermost_frame (exp_valid_block); |
5412 | if (frame) | |
5413 | { | |
5414 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5415 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5416 | } |
5417 | else | |
101dcfbe AC |
5418 | { |
5419 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5420 | } | |
c906108c | 5421 | |
c906108c SS |
5422 | /* If the expression is "local", then set up a "watchpoint scope" |
5423 | breakpoint at the point where we've left the scope of the watchpoint | |
5424 | expression. */ | |
5425 | if (innermost_block) | |
5426 | { | |
5427 | if (prev_frame) | |
5428 | { | |
5429 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5430 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5431 | bp_watchpoint_scope); | |
c906108c | 5432 | |
b5de0fa7 | 5433 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5434 | |
5435 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5436 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5437 | |
5438 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5439 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5440 | |
5441 | /* Set the address at which we will stop. */ | |
5442 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
5443 | ||
5444 | /* The scope breakpoint is related to the watchpoint. We | |
5445 | will need to act on them together. */ | |
5446 | b->related_breakpoint = scope_breakpoint; | |
5447 | } | |
5448 | } | |
5449 | value_free_to_mark (mark); | |
5450 | mention (b); | |
5451 | } | |
5452 | ||
5453 | /* Return count of locations need to be watched and can be handled | |
5454 | in hardware. If the watchpoint can not be handled | |
5455 | in hardware return zero. */ | |
5456 | ||
5457 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d JM |
5458 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
5459 | ((BYTE_SIZE) <= (REGISTER_SIZE)) | |
5460 | #endif | |
5461 | ||
5462 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5463 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5464 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5465 | #endif |
5466 | ||
5467 | static int | |
fba45db2 | 5468 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5469 | { |
5470 | int found_memory_cnt = 0; | |
2e70b7b9 | 5471 | struct value *head = v; |
c906108c SS |
5472 | |
5473 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5474 | if (!can_use_hw_watchpoints) |
c906108c | 5475 | return 0; |
c5aa993b | 5476 | |
5c44784c JM |
5477 | /* Make sure that the value of the expression depends only upon |
5478 | memory contents, and values computed from them within GDB. If we | |
5479 | find any register references or function calls, we can't use a | |
5480 | hardware watchpoint. | |
5481 | ||
5482 | The idea here is that evaluating an expression generates a series | |
5483 | of values, one holding the value of every subexpression. (The | |
5484 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5485 | a*b+c.) GDB's values hold almost enough information to establish | |
5486 | the criteria given above --- they identify memory lvalues, | |
5487 | register lvalues, computed values, etcetera. So we can evaluate | |
5488 | the expression, and then scan the chain of values that leaves | |
5489 | behind to decide whether we can detect any possible change to the | |
5490 | expression's final value using only hardware watchpoints. | |
5491 | ||
5492 | However, I don't think that the values returned by inferior | |
5493 | function calls are special in any way. So this function may not | |
5494 | notice that an expression involving an inferior function call | |
5495 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5496 | for (; v; v = v->next) |
c906108c | 5497 | { |
5c44784c | 5498 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5499 | { |
5c44784c JM |
5500 | if (VALUE_LAZY (v)) |
5501 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5502 | we either just used its address (e.g., `a' in `a.b') or | |
5503 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5504 | ; | |
53a5351d | 5505 | else |
5c44784c JM |
5506 | { |
5507 | /* Ahh, memory we actually used! Check if we can cover | |
5508 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5509 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5510 | ||
5511 | /* We only watch structs and arrays if user asked for it | |
5512 | explicitly, never if they just happen to appear in a | |
5513 | middle of some value chain. */ | |
5514 | if (v == head | |
5515 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5516 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5517 | { | |
5518 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5519 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5520 | ||
5521 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5522 | return 0; | |
5523 | else | |
5524 | found_memory_cnt++; | |
5525 | } | |
5c44784c | 5526 | } |
c5aa993b | 5527 | } |
c906108c | 5528 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5529 | return 0; /* ??? What does this represent? */ |
5530 | else if (v->lval == lval_register) | |
5531 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5532 | } |
5533 | ||
5534 | /* The expression itself looks suitable for using a hardware | |
5535 | watchpoint, but give the target machine a chance to reject it. */ | |
5536 | return found_memory_cnt; | |
5537 | } | |
5538 | ||
8b93c638 | 5539 | void |
fba45db2 | 5540 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5541 | { |
5542 | watch_command (arg, from_tty); | |
5543 | } | |
8926118c | 5544 | |
c5aa993b | 5545 | static void |
fba45db2 | 5546 | watch_command (char *arg, int from_tty) |
c906108c | 5547 | { |
53a5351d | 5548 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5549 | } |
5550 | ||
8b93c638 | 5551 | void |
fba45db2 | 5552 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5553 | { |
5554 | rwatch_command (arg, from_tty); | |
5555 | } | |
8926118c | 5556 | |
c5aa993b | 5557 | static void |
fba45db2 | 5558 | rwatch_command (char *arg, int from_tty) |
c906108c | 5559 | { |
53a5351d | 5560 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5561 | } |
5562 | ||
8b93c638 | 5563 | void |
fba45db2 | 5564 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5565 | { |
5566 | awatch_command (arg, from_tty); | |
5567 | } | |
8926118c | 5568 | |
c5aa993b | 5569 | static void |
fba45db2 | 5570 | awatch_command (char *arg, int from_tty) |
c906108c | 5571 | { |
53a5351d | 5572 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5573 | } |
c906108c | 5574 | \f |
c5aa993b | 5575 | |
43ff13b4 | 5576 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5577 | because it uses the mechanisms of breakpoints. */ |
5578 | ||
43ff13b4 JM |
5579 | /* This function is called by fetch_inferior_event via the |
5580 | cmd_continuation pointer, to complete the until command. It takes | |
5581 | care of cleaning up the temporary breakpoints set up by the until | |
5582 | command. */ | |
c2c6d25f JM |
5583 | static void |
5584 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5585 | { |
0d06e24b JM |
5586 | struct cleanup *cleanups; |
5587 | ||
57e687d9 | 5588 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5589 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5590 | } |
5591 | ||
c906108c SS |
5592 | /* ARGSUSED */ |
5593 | void | |
ae66c1fc | 5594 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
5595 | { |
5596 | struct symtabs_and_lines sals; | |
5597 | struct symtab_and_line sal; | |
6e7f8b9c | 5598 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
5599 | struct breakpoint *breakpoint; |
5600 | struct cleanup *old_chain; | |
0d06e24b JM |
5601 | struct continuation_arg *arg1; |
5602 | ||
c906108c SS |
5603 | |
5604 | clear_proceed_status (); | |
5605 | ||
5606 | /* Set a breakpoint where the user wants it and at return from | |
5607 | this function */ | |
c5aa993b | 5608 | |
c906108c SS |
5609 | if (default_breakpoint_valid) |
5610 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 5611 | default_breakpoint_line, (char ***) NULL); |
c906108c | 5612 | else |
53a5351d JM |
5613 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
5614 | 0, (char ***) NULL); | |
c5aa993b | 5615 | |
c906108c SS |
5616 | if (sals.nelts != 1) |
5617 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5618 | |
c906108c | 5619 | sal = sals.sals[0]; |
b8c9b27d | 5620 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 5621 | |
c906108c SS |
5622 | if (*arg) |
5623 | error ("Junk at end of arguments."); | |
c5aa993b | 5624 | |
c906108c | 5625 | resolve_sal_pc (&sal); |
c5aa993b | 5626 | |
ae66c1fc EZ |
5627 | if (anywhere) |
5628 | /* If the user told us to continue until a specified location, | |
5629 | we don't specify a frame at which we need to stop. */ | |
5630 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
5631 | else | |
5632 | /* Otherwise, specify the current frame, because we want to stop only | |
5633 | at the very same frame. */ | |
5634 | breakpoint = set_momentary_breakpoint (sal, | |
5635 | get_frame_id (deprecated_selected_frame), | |
5636 | bp_until); | |
c5aa993b | 5637 | |
6426a772 | 5638 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5639 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5640 | else |
4d6140d9 | 5641 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5642 | |
5643 | /* If we are running asynchronously, and the target supports async | |
5644 | execution, we are not waiting for the target to stop, in the call | |
5645 | tp proceed, below. This means that we cannot delete the | |
5646 | brekpoints until the target has actually stopped. The only place | |
5647 | where we get a chance to do that is in fetch_inferior_event, so | |
5648 | we must set things up for that. */ | |
5649 | ||
6426a772 | 5650 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 5651 | { |
0d06e24b JM |
5652 | /* In this case the arg for the continuation is just the point |
5653 | in the exec_cleanups chain from where to start doing | |
5654 | cleanups, because all the continuation does is the cleanups in | |
5655 | the exec_cleanup_chain. */ | |
5656 | arg1 = | |
5657 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5658 | arg1->next = NULL; |
5659 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5660 | |
5661 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5662 | } |
c906108c | 5663 | |
ae66c1fc EZ |
5664 | /* Keep within the current frame, or in frames called by the current |
5665 | one. */ | |
c906108c SS |
5666 | if (prev_frame) |
5667 | { | |
30f7db39 AC |
5668 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
5669 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
5670 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
5671 | bp_until); | |
6426a772 | 5672 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5673 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5674 | else |
4d6140d9 | 5675 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5676 | } |
c5aa993b | 5677 | |
c906108c | 5678 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5679 | /* Do the cleanups now, anly if we are not running asynchronously, |
5680 | of if we are, but the target is still synchronous. */ | |
6426a772 | 5681 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 5682 | do_cleanups (old_chain); |
c906108c | 5683 | } |
ae66c1fc | 5684 | |
c906108c SS |
5685 | #if 0 |
5686 | /* These aren't used; I don't konw what they were for. */ | |
5687 | /* Set a breakpoint at the catch clause for NAME. */ | |
5688 | static int | |
fba45db2 | 5689 | catch_breakpoint (char *name) |
c906108c SS |
5690 | { |
5691 | } | |
5692 | ||
5693 | static int | |
fba45db2 | 5694 | disable_catch_breakpoint (void) |
c906108c SS |
5695 | { |
5696 | } | |
5697 | ||
5698 | static int | |
fba45db2 | 5699 | delete_catch_breakpoint (void) |
c906108c SS |
5700 | { |
5701 | } | |
5702 | ||
5703 | static int | |
fba45db2 | 5704 | enable_catch_breakpoint (void) |
c906108c SS |
5705 | { |
5706 | } | |
5707 | #endif /* 0 */ | |
5708 | ||
5709 | struct sal_chain | |
5710 | { | |
5711 | struct sal_chain *next; | |
5712 | struct symtab_and_line sal; | |
5713 | }; | |
5714 | ||
7a292a7a | 5715 | #if 0 |
c906108c SS |
5716 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
5717 | had been commented out in the v.4.16 sources, and stays | |
5718 | disabled there now because "catch NAME" syntax isn't allowed. | |
5719 | pai/1997-07-11 */ | |
5720 | /* This isn't used; I don't know what it was for. */ | |
5721 | /* For each catch clause identified in ARGS, run FUNCTION | |
5722 | with that clause as an argument. */ | |
5723 | static struct symtabs_and_lines | |
831662b3 | 5724 | map_catch_names (char *args, int (*function) ()) |
c906108c SS |
5725 | { |
5726 | register char *p = args; | |
5727 | register char *p1; | |
5728 | struct symtabs_and_lines sals; | |
5729 | #if 0 | |
5730 | struct sal_chain *sal_chain = 0; | |
5731 | #endif | |
5732 | ||
5733 | if (p == 0) | |
5734 | error_no_arg ("one or more catch names"); | |
5735 | ||
5736 | sals.nelts = 0; | |
5737 | sals.sals = NULL; | |
5738 | ||
5739 | while (*p) | |
5740 | { | |
5741 | p1 = p; | |
5742 | /* Don't swallow conditional part. */ | |
5743 | if (p1[0] == 'i' && p1[1] == 'f' | |
5744 | && (p1[2] == ' ' || p1[2] == '\t')) | |
5745 | break; | |
5746 | ||
5747 | if (isalpha (*p1)) | |
5748 | { | |
5749 | p1++; | |
5750 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
5751 | p1++; | |
5752 | } | |
5753 | ||
5754 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
5755 | error ("Arguments must be catch names."); | |
5756 | ||
5757 | *p1 = 0; | |
5758 | #if 0 | |
5759 | if (function (p)) | |
5760 | { | |
5761 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5762 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
5763 | next->next = sal_chain; |
5764 | next->sal = get_catch_sal (p); | |
5765 | sal_chain = next; | |
5766 | goto win; | |
5767 | } | |
5768 | #endif | |
5769 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
5770 | #if 0 | |
5771 | win: | |
5772 | #endif | |
5773 | p = p1; | |
c5aa993b JM |
5774 | while (*p == ' ' || *p == '\t') |
5775 | p++; | |
c906108c SS |
5776 | } |
5777 | } | |
7a292a7a | 5778 | #endif |
c906108c SS |
5779 | |
5780 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
5781 | ||
5782 | static struct symtabs_and_lines | |
fba45db2 | 5783 | get_catch_sals (int this_level_only) |
c906108c SS |
5784 | { |
5785 | register struct blockvector *bl; | |
5786 | register struct block *block; | |
5787 | int index, have_default = 0; | |
5788 | CORE_ADDR pc; | |
5789 | struct symtabs_and_lines sals; | |
5790 | struct sal_chain *sal_chain = 0; | |
5791 | char *blocks_searched; | |
5792 | ||
5793 | /* Not sure whether an error message is always the correct response, | |
5794 | but it's better than a core dump. */ | |
6e7f8b9c | 5795 | if (deprecated_selected_frame == NULL) |
c906108c | 5796 | error ("No selected frame."); |
6e7f8b9c | 5797 | block = get_frame_block (deprecated_selected_frame, 0); |
bdd78e62 | 5798 | pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
5799 | |
5800 | sals.nelts = 0; | |
5801 | sals.sals = NULL; | |
5802 | ||
5803 | if (block == 0) | |
5804 | error ("No symbol table info available.\n"); | |
5805 | ||
5806 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
5807 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5808 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5809 | ||
5810 | while (block != 0) | |
5811 | { | |
5812 | CORE_ADDR end = BLOCK_END (block) - 4; | |
5813 | int last_index; | |
5814 | ||
5815 | if (bl != blockvector_for_pc (end, &index)) | |
5816 | error ("blockvector blotch"); | |
5817 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
5818 | error ("blockvector botch"); | |
5819 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
5820 | index += 1; | |
5821 | ||
5822 | /* Don't print out blocks that have gone by. */ | |
5823 | while (index < last_index | |
5824 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
5825 | index++; | |
5826 | ||
5827 | while (index < last_index | |
5828 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
5829 | { | |
5830 | if (blocks_searched[index] == 0) | |
5831 | { | |
5832 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
c906108c SS |
5833 | register int i; |
5834 | register struct symbol *sym; | |
5835 | ||
e88c90f2 | 5836 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 5837 | { |
22abf04a | 5838 | if (STREQ (DEPRECATED_SYMBOL_NAME (sym), "default")) |
c906108c SS |
5839 | { |
5840 | if (have_default) | |
5841 | continue; | |
5842 | have_default = 1; | |
5843 | } | |
5844 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
5845 | { | |
5846 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5847 | alloca (sizeof (struct sal_chain)); |
c906108c | 5848 | next->next = sal_chain; |
53a5351d JM |
5849 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
5850 | 0); | |
c906108c SS |
5851 | sal_chain = next; |
5852 | } | |
5853 | } | |
5854 | blocks_searched[index] = 1; | |
5855 | } | |
5856 | index++; | |
5857 | } | |
5858 | if (have_default) | |
5859 | break; | |
5860 | if (sal_chain && this_level_only) | |
5861 | break; | |
5862 | ||
5863 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
5864 | Don't continue to its superblock, the block of |
5865 | per-file symbols. */ | |
c906108c SS |
5866 | if (BLOCK_FUNCTION (block)) |
5867 | break; | |
5868 | block = BLOCK_SUPERBLOCK (block); | |
5869 | } | |
5870 | ||
5871 | if (sal_chain) | |
5872 | { | |
5873 | struct sal_chain *tmp_chain; | |
5874 | ||
5875 | /* Count the number of entries. */ | |
5876 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
5877 | tmp_chain = tmp_chain->next) | |
5878 | index++; | |
5879 | ||
5880 | sals.nelts = index; | |
5881 | sals.sals = (struct symtab_and_line *) | |
5882 | xmalloc (index * sizeof (struct symtab_and_line)); | |
5883 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
5884 | sals.sals[index] = sal_chain->sal; | |
5885 | } | |
5886 | ||
5887 | return sals; | |
5888 | } | |
5889 | ||
5890 | static void | |
fba45db2 | 5891 | ep_skip_leading_whitespace (char **s) |
c906108c | 5892 | { |
c5aa993b JM |
5893 | if ((s == NULL) || (*s == NULL)) |
5894 | return; | |
5895 | while (isspace (**s)) | |
5896 | *s += 1; | |
c906108c | 5897 | } |
c5aa993b | 5898 | |
c906108c SS |
5899 | /* This function examines a string, and attempts to find a token |
5900 | that might be an event name in the leading characters. If a | |
5901 | possible match is found, a pointer to the last character of | |
5902 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5903 | |
c906108c | 5904 | static char * |
fba45db2 | 5905 | ep_find_event_name_end (char *arg) |
c906108c | 5906 | { |
c5aa993b JM |
5907 | char *s = arg; |
5908 | char *event_name_end = NULL; | |
5909 | ||
c906108c SS |
5910 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5911 | if (arg == NULL) | |
5912 | return NULL; | |
c5aa993b | 5913 | |
c906108c | 5914 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5915 | Basically, we're looking for alphanumerics and underscores; |
5916 | anything else delimites the token. */ | |
c906108c SS |
5917 | while (*s != '\0') |
5918 | { | |
c5aa993b JM |
5919 | if (!isalnum (*s) && (*s != '_')) |
5920 | break; | |
c906108c SS |
5921 | event_name_end = s; |
5922 | s++; | |
5923 | } | |
c5aa993b | 5924 | |
c906108c SS |
5925 | return event_name_end; |
5926 | } | |
5927 | ||
c5aa993b | 5928 | |
c906108c SS |
5929 | /* This function attempts to parse an optional "if <cond>" clause |
5930 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5931 | |
c906108c SS |
5932 | Else, it returns a pointer to the condition string. (It does not |
5933 | attempt to evaluate the string against a particular block.) And, | |
5934 | it updates arg to point to the first character following the parsed | |
5935 | if clause in the arg string. */ | |
53a5351d | 5936 | |
c906108c | 5937 | static char * |
fba45db2 | 5938 | ep_parse_optional_if_clause (char **arg) |
c906108c | 5939 | { |
c5aa993b JM |
5940 | char *cond_string; |
5941 | ||
5942 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5943 | return NULL; |
c5aa993b | 5944 | |
c906108c SS |
5945 | /* Skip the "if" keyword. */ |
5946 | (*arg) += 2; | |
c5aa993b | 5947 | |
c906108c SS |
5948 | /* Skip any extra leading whitespace, and record the start of the |
5949 | condition string. */ | |
5950 | ep_skip_leading_whitespace (arg); | |
5951 | cond_string = *arg; | |
c5aa993b | 5952 | |
c906108c SS |
5953 | /* Assume that the condition occupies the remainder of the arg string. */ |
5954 | (*arg) += strlen (cond_string); | |
c5aa993b | 5955 | |
c906108c SS |
5956 | return cond_string; |
5957 | } | |
c5aa993b | 5958 | |
c906108c SS |
5959 | /* This function attempts to parse an optional filename from the arg |
5960 | string. If one is not found, it returns NULL. | |
c5aa993b | 5961 | |
c906108c SS |
5962 | Else, it returns a pointer to the parsed filename. (This function |
5963 | makes no attempt to verify that a file of that name exists, or is | |
5964 | accessible.) And, it updates arg to point to the first character | |
5965 | following the parsed filename in the arg string. | |
c5aa993b | 5966 | |
c906108c SS |
5967 | Note that clients needing to preserve the returned filename for |
5968 | future access should copy it to their own buffers. */ | |
5969 | static char * | |
fba45db2 | 5970 | ep_parse_optional_filename (char **arg) |
c906108c | 5971 | { |
c5aa993b JM |
5972 | static char filename[1024]; |
5973 | char *arg_p = *arg; | |
5974 | int i; | |
5975 | char c; | |
5976 | ||
c906108c SS |
5977 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5978 | return NULL; | |
c5aa993b JM |
5979 | |
5980 | for (i = 0;; i++) | |
c906108c SS |
5981 | { |
5982 | c = *arg_p; | |
5983 | if (isspace (c)) | |
c5aa993b | 5984 | c = '\0'; |
c906108c SS |
5985 | filename[i] = c; |
5986 | if (c == '\0') | |
c5aa993b | 5987 | break; |
c906108c SS |
5988 | arg_p++; |
5989 | } | |
5990 | *arg = arg_p; | |
c5aa993b | 5991 | |
c906108c SS |
5992 | return filename; |
5993 | } | |
c5aa993b | 5994 | |
c906108c SS |
5995 | /* Commands to deal with catching events, such as signals, exceptions, |
5996 | process start/exit, etc. */ | |
c5aa993b JM |
5997 | |
5998 | typedef enum | |
5999 | { | |
6000 | catch_fork, catch_vfork | |
6001 | } | |
6002 | catch_fork_kind; | |
6003 | ||
e514a9d6 | 6004 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
a14ed312 KB |
6005 | static void catch_fork_command_1 (catch_fork_kind fork_kind, |
6006 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 6007 | |
c906108c | 6008 | static void |
fba45db2 KB |
6009 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6010 | int from_tty) | |
c906108c | 6011 | { |
c5aa993b JM |
6012 | char *cond_string = NULL; |
6013 | ||
c906108c | 6014 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6015 | |
c906108c | 6016 | /* The allowed syntax is: |
c5aa993b JM |
6017 | catch [v]fork |
6018 | catch [v]fork if <cond> | |
6019 | ||
c906108c SS |
6020 | First, check if there's an if clause. */ |
6021 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6022 | |
c906108c SS |
6023 | if ((*arg != '\0') && !isspace (*arg)) |
6024 | error ("Junk at end of arguments."); | |
c5aa993b | 6025 | |
c906108c SS |
6026 | /* If this target supports it, create a fork or vfork catchpoint |
6027 | and enable reporting of such events. */ | |
c5aa993b JM |
6028 | switch (fork_kind) |
6029 | { | |
6030 | case catch_fork: | |
c906108c SS |
6031 | create_fork_event_catchpoint (tempflag, cond_string); |
6032 | break; | |
c5aa993b | 6033 | case catch_vfork: |
c906108c SS |
6034 | create_vfork_event_catchpoint (tempflag, cond_string); |
6035 | break; | |
c5aa993b | 6036 | default: |
c906108c SS |
6037 | error ("unsupported or unknown fork kind; cannot catch it"); |
6038 | break; | |
c5aa993b | 6039 | } |
c906108c | 6040 | } |
e514a9d6 | 6041 | #endif |
c906108c | 6042 | |
e514a9d6 | 6043 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c | 6044 | static void |
fba45db2 | 6045 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6046 | { |
c5aa993b | 6047 | char *cond_string = NULL; |
c906108c SS |
6048 | |
6049 | ep_skip_leading_whitespace (&arg); | |
6050 | ||
6051 | /* The allowed syntax is: | |
c5aa993b JM |
6052 | catch exec |
6053 | catch exec if <cond> | |
c906108c SS |
6054 | |
6055 | First, check if there's an if clause. */ | |
6056 | cond_string = ep_parse_optional_if_clause (&arg); | |
6057 | ||
6058 | if ((*arg != '\0') && !isspace (*arg)) | |
6059 | error ("Junk at end of arguments."); | |
6060 | ||
6061 | /* If this target supports it, create an exec catchpoint | |
6062 | and enable reporting of such events. */ | |
6063 | create_exec_event_catchpoint (tempflag, cond_string); | |
6064 | } | |
e514a9d6 | 6065 | #endif |
c5aa993b | 6066 | |
c906108c SS |
6067 | #if defined(SOLIB_ADD) |
6068 | static void | |
fba45db2 | 6069 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6070 | { |
c5aa993b JM |
6071 | char *dll_pathname = NULL; |
6072 | char *cond_string = NULL; | |
6073 | ||
c906108c | 6074 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6075 | |
c906108c | 6076 | /* The allowed syntax is: |
c5aa993b JM |
6077 | catch load |
6078 | catch load if <cond> | |
6079 | catch load <filename> | |
6080 | catch load <filename> if <cond> | |
6081 | ||
c906108c SS |
6082 | The user is not allowed to specify the <filename> after an |
6083 | if clause. | |
c5aa993b | 6084 | |
c906108c | 6085 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6086 | |
c906108c SS |
6087 | First, check if there's an if clause. If so, then there |
6088 | cannot be a filename. */ | |
6089 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6090 | |
c906108c SS |
6091 | /* If there was an if clause, then there cannot be a filename. |
6092 | Else, there might be a filename and an if clause. */ | |
6093 | if (cond_string == NULL) | |
6094 | { | |
6095 | dll_pathname = ep_parse_optional_filename (&arg); | |
6096 | ep_skip_leading_whitespace (&arg); | |
6097 | cond_string = ep_parse_optional_if_clause (&arg); | |
6098 | } | |
c5aa993b | 6099 | |
c906108c SS |
6100 | if ((*arg != '\0') && !isspace (*arg)) |
6101 | error ("Junk at end of arguments."); | |
c5aa993b | 6102 | |
c906108c SS |
6103 | /* Create a load breakpoint that only triggers when a load of |
6104 | the specified dll (or any dll, if no pathname was specified) | |
6105 | occurs. */ | |
39f77062 | 6106 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6107 | dll_pathname, cond_string); |
c906108c | 6108 | } |
c5aa993b | 6109 | |
c906108c | 6110 | static void |
fba45db2 | 6111 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6112 | { |
c5aa993b JM |
6113 | char *dll_pathname = NULL; |
6114 | char *cond_string = NULL; | |
6115 | ||
c906108c | 6116 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6117 | |
c906108c | 6118 | /* The allowed syntax is: |
c5aa993b JM |
6119 | catch unload |
6120 | catch unload if <cond> | |
6121 | catch unload <filename> | |
6122 | catch unload <filename> if <cond> | |
6123 | ||
c906108c SS |
6124 | The user is not allowed to specify the <filename> after an |
6125 | if clause. | |
c5aa993b | 6126 | |
c906108c | 6127 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6128 | |
c906108c SS |
6129 | First, check if there's an if clause. If so, then there |
6130 | cannot be a filename. */ | |
6131 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6132 | |
c906108c SS |
6133 | /* If there was an if clause, then there cannot be a filename. |
6134 | Else, there might be a filename and an if clause. */ | |
6135 | if (cond_string == NULL) | |
6136 | { | |
6137 | dll_pathname = ep_parse_optional_filename (&arg); | |
6138 | ep_skip_leading_whitespace (&arg); | |
6139 | cond_string = ep_parse_optional_if_clause (&arg); | |
6140 | } | |
c5aa993b | 6141 | |
c906108c SS |
6142 | if ((*arg != '\0') && !isspace (*arg)) |
6143 | error ("Junk at end of arguments."); | |
c5aa993b | 6144 | |
c906108c SS |
6145 | /* Create an unload breakpoint that only triggers when an unload of |
6146 | the specified dll (or any dll, if no pathname was specified) | |
6147 | occurs. */ | |
39f77062 | 6148 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6149 | dll_pathname, cond_string); |
c906108c SS |
6150 | } |
6151 | #endif /* SOLIB_ADD */ | |
6152 | ||
6153 | /* Commands to deal with catching exceptions. */ | |
6154 | ||
6155 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6156 | exception event callback */ |
c906108c SS |
6157 | |
6158 | static void | |
fba45db2 KB |
6159 | create_exception_catchpoint (int tempflag, char *cond_string, |
6160 | enum exception_event_kind ex_event, | |
6161 | struct symtab_and_line *sal) | |
c906108c | 6162 | { |
c5aa993b | 6163 | struct breakpoint *b; |
c5aa993b | 6164 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6165 | enum bptype bptype; |
c906108c | 6166 | |
c5aa993b | 6167 | if (!sal) /* no exception support? */ |
c906108c SS |
6168 | return; |
6169 | ||
c906108c SS |
6170 | switch (ex_event) |
6171 | { | |
c5aa993b | 6172 | case EX_EVENT_THROW: |
4d28f7a8 | 6173 | bptype = bp_catch_throw; |
c5aa993b JM |
6174 | break; |
6175 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6176 | bptype = bp_catch_catch; |
c5aa993b JM |
6177 | break; |
6178 | default: /* error condition */ | |
c5aa993b | 6179 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6180 | } |
4d28f7a8 KB |
6181 | |
6182 | b = set_raw_breakpoint (*sal, bptype); | |
6183 | set_breakpoint_count (breakpoint_count + 1); | |
6184 | b->number = breakpoint_count; | |
6185 | b->cond = NULL; | |
6186 | b->cond_string = (cond_string == NULL) ? | |
6187 | NULL : savestring (cond_string, strlen (cond_string)); | |
6188 | b->thread = thread; | |
6189 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6190 | b->enable_state = bp_enabled; |
6191 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6192 | mention (b); |
6193 | } | |
6194 | ||
c5aa993b | 6195 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6196 | |
6197 | static void | |
fba45db2 KB |
6198 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6199 | int tempflag, int from_tty) | |
c906108c | 6200 | { |
c5aa993b JM |
6201 | char *cond_string = NULL; |
6202 | struct symtab_and_line *sal = NULL; | |
6203 | ||
c906108c | 6204 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6205 | |
c906108c SS |
6206 | cond_string = ep_parse_optional_if_clause (&arg); |
6207 | ||
6208 | if ((*arg != '\0') && !isspace (*arg)) | |
6209 | error ("Junk at end of arguments."); | |
6210 | ||
6211 | if ((ex_event != EX_EVENT_THROW) && | |
6212 | (ex_event != EX_EVENT_CATCH)) | |
6213 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6214 | ||
6215 | /* See if we can find a callback routine */ | |
6216 | sal = target_enable_exception_callback (ex_event, 1); | |
6217 | ||
c5aa993b | 6218 | if (sal) |
c906108c SS |
6219 | { |
6220 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6221 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6222 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6223 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6224 | else |
53a5351d | 6225 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6226 | } |
c5aa993b | 6227 | else |
c906108c SS |
6228 | { |
6229 | /* No callbacks from runtime system for exceptions. | |
6230 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
6231 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
6232 | { |
6233 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
6234 | } | |
c906108c | 6235 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
6236 | { |
6237 | /* Set a breakpoint on __raise_exception () */ | |
6238 | ||
53a5351d JM |
6239 | warning ("Unsupported with this platform/compiler combination."); |
6240 | warning ("Perhaps you can achieve the effect you want by setting"); | |
6241 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 6242 | } |
c906108c SS |
6243 | } |
6244 | } | |
6245 | ||
6246 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6247 | inside a catch_errors */ | |
6248 | ||
6249 | static int | |
4efb68b1 | 6250 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6251 | { |
6252 | args_for_catchpoint_enable *args = arg; | |
6253 | struct symtab_and_line *sal; | |
b5de0fa7 | 6254 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6255 | if (sal == NULL) |
6256 | return 0; | |
6257 | else if (sal == (struct symtab_and_line *) -1) | |
6258 | return -1; | |
6259 | else | |
c5aa993b | 6260 | return 1; /*is valid */ |
c906108c SS |
6261 | } |
6262 | ||
6263 | ||
6264 | ||
6265 | /* This is the original v.4.16 and earlier version of the | |
6266 | catch_command_1() function. Now that other flavours of "catch" | |
6267 | have been introduced, and since exception handling can be handled | |
6268 | in other ways (through target ops) also, this is used only for the | |
6269 | GNU C++ exception handling system. | |
6270 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
6271 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
6272 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 6273 | |
c906108c SS |
6274 | Called from catch_exception_command_1 () */ |
6275 | ||
6276 | ||
6277 | static void | |
fba45db2 | 6278 | handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty) |
c906108c SS |
6279 | { |
6280 | /* First, translate ARG into something we can deal with in terms | |
6281 | of breakpoints. */ | |
6282 | ||
6283 | struct symtabs_and_lines sals; | |
6284 | struct symtab_and_line sal; | |
6285 | register struct expression *cond = 0; | |
6286 | register struct breakpoint *b; | |
6287 | char *save_arg; | |
6288 | int i; | |
6289 | ||
fe39c653 | 6290 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6291 | |
6292 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
6293 | are breakpointed. */ | |
6294 | ||
c5aa993b | 6295 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
6296 | && (arg[2] == ' ' || arg[2] == '\t'))) |
6297 | { | |
6298 | /* Grab all active catch clauses. */ | |
6299 | sals = get_catch_sals (0); | |
6300 | } | |
6301 | else | |
6302 | { | |
6303 | /* Grab selected catch clauses. */ | |
6304 | error ("catch NAME not implemented"); | |
6305 | ||
6306 | #if 0 | |
6307 | /* Not sure why this code has been disabled. I'm leaving | |
6308 | it disabled. We can never come here now anyway | |
6309 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 6310 | pai/1997-07-11 */ |
c906108c SS |
6311 | |
6312 | /* This isn't used; I don't know what it was for. */ | |
6313 | sals = map_catch_names (arg, catch_breakpoint); | |
6314 | #endif | |
6315 | } | |
6316 | ||
c5aa993b | 6317 | if (!sals.nelts) |
c906108c SS |
6318 | return; |
6319 | ||
6320 | save_arg = arg; | |
6321 | for (i = 0; i < sals.nelts; i++) | |
6322 | { | |
6323 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 6324 | |
c906108c SS |
6325 | while (arg && *arg) |
6326 | { | |
6327 | if (arg[0] == 'i' && arg[1] == 'f' | |
6328 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 6329 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
6330 | block_for_pc (sals.sals[i].pc), 0); |
6331 | else | |
6332 | error ("Junk at end of arguments."); | |
6333 | } | |
6334 | arg = save_arg; | |
6335 | } | |
6336 | ||
6337 | for (i = 0; i < sals.nelts; i++) | |
6338 | { | |
6339 | sal = sals.sals[i]; | |
6340 | ||
6341 | if (from_tty) | |
6342 | describe_other_breakpoints (sal.pc, sal.section); | |
6343 | ||
53a5351d JM |
6344 | /* Important -- this is an ordinary breakpoint. For platforms |
6345 | with callback support for exceptions, | |
6346 | create_exception_catchpoint() will create special bp types | |
6347 | (bp_catch_catch and bp_catch_throw), and there is code in | |
6348 | insert_breakpoints() and elsewhere that depends on that. */ | |
4d28f7a8 KB |
6349 | b = set_raw_breakpoint (sal, bp_breakpoint); |
6350 | set_breakpoint_count (breakpoint_count + 1); | |
6351 | b->number = breakpoint_count; | |
c906108c SS |
6352 | |
6353 | b->cond = cond; | |
b5de0fa7 EZ |
6354 | b->enable_state = bp_enabled; |
6355 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6356 | |
6357 | mention (b); | |
6358 | } | |
6359 | ||
6360 | if (sals.nelts > 1) | |
6361 | { | |
53a5351d JM |
6362 | warning ("Multiple breakpoints were set."); |
6363 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 6364 | } |
b8c9b27d | 6365 | xfree (sals.sals); |
c906108c SS |
6366 | } |
6367 | ||
c906108c | 6368 | static void |
fba45db2 | 6369 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6370 | { |
c5aa993b | 6371 | |
c906108c SS |
6372 | /* The first argument may be an event name, such as "start" or "load". |
6373 | If so, then handle it as such. If it doesn't match an event name, | |
6374 | then attempt to interpret it as an exception name. (This latter is | |
6375 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6376 | |
c906108c | 6377 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6378 | char *arg1_start = arg; |
6379 | char *arg1_end; | |
6380 | int arg1_length; | |
6381 | ||
c906108c SS |
6382 | if (arg1_start == NULL) |
6383 | { | |
c5aa993b | 6384 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6385 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6386 | /* return; */ | |
c5aa993b | 6387 | /* Now, this is not allowed */ |
c906108c SS |
6388 | error ("Catch requires an event name."); |
6389 | ||
6390 | } | |
6391 | arg1_end = ep_find_event_name_end (arg1_start); | |
6392 | if (arg1_end == NULL) | |
6393 | error ("catch requires an event"); | |
6394 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6395 | |
c906108c SS |
6396 | /* Try to match what we found against known event names. */ |
6397 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6398 | { | |
6399 | error ("Catch of signal not yet implemented"); | |
6400 | } | |
6401 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6402 | { | |
53a5351d JM |
6403 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6404 | tempflag, from_tty); | |
c906108c SS |
6405 | } |
6406 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6407 | { | |
53a5351d JM |
6408 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6409 | tempflag, from_tty); | |
c906108c SS |
6410 | } |
6411 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6412 | { | |
6413 | error ("Catch of thread_start not yet implemented"); | |
6414 | } | |
6415 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6416 | { | |
6417 | error ("Catch of thread_exit not yet implemented"); | |
6418 | } | |
6419 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6420 | { | |
6421 | error ("Catch of thread_join not yet implemented"); | |
6422 | } | |
6423 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6424 | { | |
6425 | error ("Catch of start not yet implemented"); | |
6426 | } | |
6427 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6428 | { | |
6429 | error ("Catch of exit not yet implemented"); | |
6430 | } | |
6431 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6432 | { | |
6433 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 6434 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6435 | #else |
6436 | error ("Catch of fork not yet implemented"); | |
6437 | #endif | |
6438 | } | |
6439 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6440 | { | |
6441 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 6442 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6443 | #else |
6444 | error ("Catch of vfork not yet implemented"); | |
6445 | #endif | |
6446 | } | |
6447 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6448 | { | |
6449 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 6450 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6451 | #else |
6452 | error ("Catch of exec not yet implemented"); | |
6453 | #endif | |
6454 | } | |
6455 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6456 | { | |
6457 | #if defined(SOLIB_ADD) | |
c5aa993b | 6458 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6459 | #else |
6460 | error ("Catch of load not implemented"); | |
6461 | #endif | |
6462 | } | |
6463 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6464 | { | |
6465 | #if defined(SOLIB_ADD) | |
c5aa993b | 6466 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6467 | #else |
6468 | error ("Catch of load not implemented"); | |
6469 | #endif | |
6470 | } | |
6471 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6472 | { | |
6473 | error ("Catch of stop not yet implemented"); | |
6474 | } | |
c5aa993b | 6475 | |
c906108c SS |
6476 | /* This doesn't appear to be an event name */ |
6477 | ||
6478 | else | |
6479 | { | |
6480 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6481 | as the name of an exception */ |
c906108c | 6482 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6483 | /* Now this is not allowed */ |
c906108c SS |
6484 | error ("Unknown event kind specified for catch"); |
6485 | ||
6486 | } | |
6487 | } | |
6488 | ||
6489 | /* Used by the gui, could be made a worker for other things. */ | |
6490 | ||
6491 | struct breakpoint * | |
fba45db2 | 6492 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6493 | { |
6494 | struct breakpoint *b; | |
4d28f7a8 | 6495 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6496 | set_breakpoint_count (breakpoint_count + 1); |
6497 | b->number = breakpoint_count; | |
c906108c SS |
6498 | b->cond = 0; |
6499 | b->thread = -1; | |
6500 | return b; | |
6501 | } | |
6502 | ||
6503 | #if 0 | |
6504 | /* These aren't used; I don't know what they were for. */ | |
6505 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
6506 | static void | |
fba45db2 | 6507 | disable_catch (char *args) |
c906108c SS |
6508 | { |
6509 | /* Map the disable command to catch clauses described in ARGS. */ | |
6510 | } | |
6511 | ||
6512 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
6513 | static void | |
fba45db2 | 6514 | enable_catch (char *args) |
c906108c SS |
6515 | { |
6516 | /* Map the disable command to catch clauses described in ARGS. */ | |
6517 | } | |
6518 | ||
6519 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
6520 | static void | |
fba45db2 | 6521 | delete_catch (char *args) |
c906108c SS |
6522 | { |
6523 | /* Map the delete command to catch clauses described in ARGS. */ | |
6524 | } | |
6525 | #endif /* 0 */ | |
6526 | ||
6527 | static void | |
fba45db2 | 6528 | catch_command (char *arg, int from_tty) |
c906108c SS |
6529 | { |
6530 | catch_command_1 (arg, 0, from_tty); | |
6531 | } | |
6532 | \f | |
6533 | ||
6534 | static void | |
fba45db2 | 6535 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6536 | { |
6537 | catch_command_1 (arg, 1, from_tty); | |
6538 | } | |
6539 | ||
80f8a6eb | 6540 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6541 | |
6542 | static void | |
fba45db2 | 6543 | clear_command (char *arg, int from_tty) |
c906108c | 6544 | { |
80f8a6eb | 6545 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6546 | int default_match; |
6547 | struct symtabs_and_lines sals; | |
6548 | struct symtab_and_line sal; | |
c906108c SS |
6549 | int i; |
6550 | ||
6551 | if (arg) | |
6552 | { | |
6553 | sals = decode_line_spec (arg, 1); | |
6554 | default_match = 0; | |
6555 | } | |
6556 | else | |
6557 | { | |
c5aa993b | 6558 | sals.sals = (struct symtab_and_line *) |
c906108c | 6559 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6560 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6561 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6562 | sal.line = default_breakpoint_line; |
6563 | sal.symtab = default_breakpoint_symtab; | |
6564 | sal.pc = default_breakpoint_address; | |
6565 | if (sal.symtab == 0) | |
6566 | error ("No source file specified."); | |
6567 | ||
6568 | sals.sals[0] = sal; | |
6569 | sals.nelts = 1; | |
6570 | ||
6571 | default_match = 1; | |
6572 | } | |
6573 | ||
6574 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6575 | to it. Do it in two passes, solely to preserve the current |
6576 | behavior that from_tty is forced true if we delete more than | |
6577 | one breakpoint. */ | |
c906108c | 6578 | |
80f8a6eb | 6579 | found = NULL; |
c906108c SS |
6580 | for (i = 0; i < sals.nelts; i++) |
6581 | { | |
6582 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6583 | If line given (pc == 0), clear all bpts on specified line. |
6584 | If defaulting, clear all bpts on default line | |
c906108c | 6585 | or at default pc. |
c5aa993b JM |
6586 | |
6587 | defaulting sal.pc != 0 tests to do | |
6588 | ||
6589 | 0 1 pc | |
6590 | 1 1 pc _and_ line | |
6591 | 0 0 line | |
6592 | 1 0 <can't happen> */ | |
c906108c SS |
6593 | |
6594 | sal = sals.sals[i]; | |
80f8a6eb | 6595 | prev = NULL; |
c906108c | 6596 | |
80f8a6eb MS |
6597 | /* Find all matching breakpoints, remove them from the |
6598 | breakpoint chain, and add them to the 'found' chain. */ | |
6599 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6600 | { |
80f8a6eb MS |
6601 | /* Are we going to delete b? */ |
6602 | if (b->type != bp_none | |
6603 | && b->type != bp_watchpoint | |
6604 | && b->type != bp_hardware_watchpoint | |
6605 | && b->type != bp_read_watchpoint | |
6606 | && b->type != bp_access_watchpoint | |
6607 | /* Not if b is a watchpoint of any sort... */ | |
6608 | && (((sal.pc && (b->address == sal.pc)) | |
6609 | && (!section_is_overlay (b->section) | |
6610 | || b->section == sal.section)) | |
6611 | /* Yes, if sal.pc matches b (modulo overlays). */ | |
6612 | || ((default_match || (0 == sal.pc)) | |
6613 | && b->source_file != NULL | |
6614 | && sal.symtab != NULL | |
6615 | && STREQ (b->source_file, sal.symtab->filename) | |
6616 | && b->line_number == sal.line))) | |
6617 | /* Yes, if sal source file and line matches b. */ | |
6618 | { | |
6619 | /* Remove it from breakpoint_chain... */ | |
6620 | if (b == breakpoint_chain) | |
6621 | { | |
6622 | /* b is at the head of the list */ | |
6623 | breakpoint_chain = b->next; | |
6624 | } | |
6625 | else | |
6626 | { | |
6627 | prev->next = b->next; | |
6628 | } | |
6629 | /* And add it to 'found' chain. */ | |
6630 | b->next = found; | |
6631 | found = b; | |
6632 | } | |
c906108c | 6633 | else |
80f8a6eb MS |
6634 | { |
6635 | /* Keep b, and keep a pointer to it. */ | |
6636 | prev = b; | |
6637 | } | |
c906108c | 6638 | } |
80f8a6eb MS |
6639 | } |
6640 | /* Now go thru the 'found' chain and delete them. */ | |
6641 | if (found == 0) | |
6642 | { | |
6643 | if (arg) | |
6644 | error ("No breakpoint at %s.", arg); | |
6645 | else | |
6646 | error ("No breakpoint at this line."); | |
6647 | } | |
c906108c | 6648 | |
80f8a6eb MS |
6649 | if (found->next) |
6650 | from_tty = 1; /* Always report if deleted more than one */ | |
6651 | if (from_tty) | |
6652 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6653 | breakpoints_changed (); | |
6654 | while (found) | |
6655 | { | |
c5aa993b | 6656 | if (from_tty) |
80f8a6eb MS |
6657 | printf_unfiltered ("%d ", found->number); |
6658 | tmp = found->next; | |
6659 | delete_breakpoint (found); | |
6660 | found = tmp; | |
c906108c | 6661 | } |
80f8a6eb MS |
6662 | if (from_tty) |
6663 | putchar_unfiltered ('\n'); | |
c906108c SS |
6664 | } |
6665 | \f | |
6666 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6667 | all breakpoints that are marked for deletion, whether hit or not. | |
6668 | This is called after any breakpoint is hit, or after errors. */ | |
6669 | ||
6670 | void | |
fba45db2 | 6671 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6672 | { |
6673 | struct breakpoint *b, *temp; | |
6674 | ||
6675 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6676 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6677 | && bs->stop) |
6678 | delete_breakpoint (bs->breakpoint_at); | |
6679 | ||
6680 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6681 | { |
b5de0fa7 | 6682 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6683 | delete_breakpoint (b); |
6684 | } | |
c906108c SS |
6685 | } |
6686 | ||
53a5351d JM |
6687 | /* Delete a breakpoint and clean up all traces of it in the data |
6688 | structures. */ | |
c906108c SS |
6689 | |
6690 | void | |
fba45db2 | 6691 | delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
6692 | { |
6693 | register struct breakpoint *b; | |
6694 | register bpstat bs; | |
6695 | ||
6696 | if (bpt == NULL) | |
6697 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6698 | ||
6699 | ||
6700 | /* Has this bp already been deleted? This can happen because multiple | |
6701 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6702 | ||
6703 | One example of this happening is a watchpoint's scope bp. When the | |
6704 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6705 | delete it. We also delete its scope bp. But the scope bp is marked | |
6706 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6707 | checked for auto-deleting bp's, which are deleted. | |
6708 | ||
6709 | A real solution to this problem might involve reference counts in bp's, | |
6710 | and/or giving them pointers back to their referencing bpstat's, and | |
6711 | teaching delete_breakpoint to only free a bp's storage when no more | |
6712 | references were extent. A cheaper bandaid was chosen. */ | |
6713 | if (bpt->type == bp_none) | |
6714 | return; | |
6715 | ||
6716 | if (delete_breakpoint_hook) | |
6717 | delete_breakpoint_hook (bpt); | |
104c1213 | 6718 | breakpoint_delete_event (bpt->number); |
c906108c SS |
6719 | |
6720 | if (bpt->inserted) | |
2e663524 | 6721 | remove_breakpoint (bpt, mark_inserted); |
c5aa993b | 6722 | |
c906108c SS |
6723 | if (breakpoint_chain == bpt) |
6724 | breakpoint_chain = bpt->next; | |
6725 | ||
6726 | /* If we have callback-style exception catchpoints, don't go through | |
6727 | the adjustments to the C++ runtime library etc. if the inferior | |
6728 | isn't actually running. target_enable_exception_callback for a | |
6729 | null target ops vector gives an undesirable error message, so we | |
6730 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6731 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6732 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6733 | { | |
6734 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
6735 | static char message[sizeof (message1) + 30]; | |
6736 | args_for_catchpoint_enable args; | |
6737 | ||
53a5351d JM |
6738 | /* Format possible error msg */ |
6739 | sprintf (message, message1, bpt->number); | |
6740 | args.kind = bpt->type == bp_catch_catch ? | |
6741 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6742 | args.enable_p = 0; |
c906108c SS |
6743 | catch_errors (cover_target_enable_exception_callback, &args, |
6744 | message, RETURN_MASK_ALL); | |
6745 | } | |
6746 | ||
6747 | ||
6748 | ALL_BREAKPOINTS (b) | |
6749 | if (b->next == bpt) | |
c5aa993b JM |
6750 | { |
6751 | b->next = bpt->next; | |
6752 | break; | |
6753 | } | |
c906108c | 6754 | |
9f60f21b | 6755 | check_duplicates (bpt); |
c906108c SS |
6756 | /* If this breakpoint was inserted, and there is another breakpoint |
6757 | at the same address, we need to insert the other breakpoint. */ | |
6758 | if (bpt->inserted | |
6759 | && bpt->type != bp_hardware_watchpoint | |
6760 | && bpt->type != bp_read_watchpoint | |
6761 | && bpt->type != bp_access_watchpoint | |
6762 | && bpt->type != bp_catch_fork | |
6763 | && bpt->type != bp_catch_vfork | |
6764 | && bpt->type != bp_catch_exec) | |
6765 | { | |
6766 | ALL_BREAKPOINTS (b) | |
6767 | if (b->address == bpt->address | |
6768 | && b->section == bpt->section | |
6769 | && !b->duplicate | |
b5de0fa7 EZ |
6770 | && b->enable_state != bp_disabled |
6771 | && b->enable_state != bp_shlib_disabled | |
6772 | && b->enable_state != bp_call_disabled) | |
c5aa993b JM |
6773 | { |
6774 | int val; | |
53a5351d | 6775 | |
c2c6d25f JM |
6776 | /* We should never reach this point if there is a permanent |
6777 | breakpoint at the same address as the one being deleted. | |
6778 | If there is a permanent breakpoint somewhere, it should | |
6779 | always be the only one inserted. */ | |
b5de0fa7 | 6780 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6781 | internal_error (__FILE__, __LINE__, |
6782 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6783 | "a permanent breakpoint"); |
6784 | ||
53a5351d JM |
6785 | if (b->type == bp_hardware_breakpoint) |
6786 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
6787 | else | |
6788 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
6789 | ||
81d0cc19 | 6790 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6791 | if (val != 0) |
6792 | { | |
81d0cc19 GS |
6793 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6794 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6795 | ||
6796 | ||
6797 | if (b->type == bp_hardware_breakpoint) | |
6798 | { | |
6799 | fprintf_unfiltered (tmp_error_stream, | |
6800 | "Cannot insert hardware breakpoint %d.\n" | |
6801 | "You may have requested too many hardware breakpoints.\n", | |
6802 | b->number); | |
6803 | } | |
6804 | else | |
6805 | { | |
6806 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6807 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
6808 | print_address_numeric (b->address, 1, tmp_error_stream); | |
6809 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
6810 | safe_strerror (val)); | |
6811 | } | |
6812 | ||
6813 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6814 | target_terminal_ours_for_output (); |
81d0cc19 | 6815 | error_stream(tmp_error_stream); |
c5aa993b JM |
6816 | } |
6817 | else | |
6818 | b->inserted = 1; | |
6819 | } | |
c906108c SS |
6820 | } |
6821 | ||
6822 | free_command_lines (&bpt->commands); | |
6823 | if (bpt->cond) | |
b8c9b27d | 6824 | xfree (bpt->cond); |
c906108c | 6825 | if (bpt->cond_string != NULL) |
b8c9b27d | 6826 | xfree (bpt->cond_string); |
c906108c | 6827 | if (bpt->addr_string != NULL) |
b8c9b27d | 6828 | xfree (bpt->addr_string); |
c906108c | 6829 | if (bpt->exp != NULL) |
b8c9b27d | 6830 | xfree (bpt->exp); |
c906108c | 6831 | if (bpt->exp_string != NULL) |
b8c9b27d | 6832 | xfree (bpt->exp_string); |
c906108c SS |
6833 | if (bpt->val != NULL) |
6834 | value_free (bpt->val); | |
6835 | if (bpt->source_file != NULL) | |
b8c9b27d | 6836 | xfree (bpt->source_file); |
c906108c | 6837 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6838 | xfree (bpt->dll_pathname); |
c906108c | 6839 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6840 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6841 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6842 | xfree (bpt->exec_pathname); |
c906108c SS |
6843 | |
6844 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6845 | /* FIXME, how can we find all bpstat's? | |
6846 | We just check stop_bpstat for now. */ | |
6847 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6848 | if (bs->breakpoint_at == bpt) | |
6849 | { | |
6850 | bs->breakpoint_at = NULL; | |
c906108c | 6851 | bs->old_val = NULL; |
c2b8ed2c | 6852 | /* bs->commands will be freed later. */ |
c906108c SS |
6853 | } |
6854 | /* On the chance that someone will soon try again to delete this same | |
6855 | bp, we mark it as deleted before freeing its storage. */ | |
6856 | bpt->type = bp_none; | |
6857 | ||
b8c9b27d | 6858 | xfree (bpt); |
c906108c SS |
6859 | } |
6860 | ||
4d6140d9 AC |
6861 | static void |
6862 | do_delete_breakpoint_cleanup (void *b) | |
6863 | { | |
6864 | delete_breakpoint (b); | |
6865 | } | |
6866 | ||
6867 | struct cleanup * | |
6868 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6869 | { | |
6870 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6871 | } | |
6872 | ||
6873 | struct cleanup * | |
6874 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6875 | { | |
6876 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6877 | } | |
6878 | ||
c906108c | 6879 | void |
fba45db2 | 6880 | delete_command (char *arg, int from_tty) |
c906108c SS |
6881 | { |
6882 | struct breakpoint *b, *temp; | |
6883 | ||
ea9365bb TT |
6884 | dont_repeat (); |
6885 | ||
c906108c SS |
6886 | if (arg == 0) |
6887 | { | |
6888 | int breaks_to_delete = 0; | |
6889 | ||
6890 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6891 | Do not delete internal or call-dummy breakpoints, these |
6892 | have to be deleted with an explicit breakpoint number argument. */ | |
6893 | ALL_BREAKPOINTS (b) | |
6894 | { | |
6895 | if (b->type != bp_call_dummy && | |
6896 | b->type != bp_shlib_event && | |
c4093a6a | 6897 | b->type != bp_thread_event && |
1900040c | 6898 | b->type != bp_overlay_event && |
c5aa993b JM |
6899 | b->number >= 0) |
6900 | breaks_to_delete = 1; | |
6901 | } | |
c906108c SS |
6902 | |
6903 | /* Ask user only if there are some breakpoints to delete. */ | |
6904 | if (!from_tty | |
6905 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6906 | { | |
c5aa993b JM |
6907 | ALL_BREAKPOINTS_SAFE (b, temp) |
6908 | { | |
6909 | if (b->type != bp_call_dummy && | |
6910 | b->type != bp_shlib_event && | |
c4093a6a | 6911 | b->type != bp_thread_event && |
1900040c | 6912 | b->type != bp_overlay_event && |
c5aa993b JM |
6913 | b->number >= 0) |
6914 | delete_breakpoint (b); | |
6915 | } | |
c906108c SS |
6916 | } |
6917 | } | |
6918 | else | |
6919 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6920 | } | |
6921 | ||
6922 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6923 | The value we return ends up being the return value from catch_errors. | |
6924 | Unused in this case. */ | |
6925 | ||
6926 | static int | |
4efb68b1 | 6927 | breakpoint_re_set_one (void *bint) |
c906108c | 6928 | { |
53a5351d JM |
6929 | /* get past catch_errs */ |
6930 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6931 | struct value *mark; |
6932 | int i; | |
6933 | struct symtabs_and_lines sals; | |
6934 | char *s; | |
b5de0fa7 | 6935 | enum enable_state save_enable; |
c906108c SS |
6936 | |
6937 | switch (b->type) | |
6938 | { | |
6939 | case bp_none: | |
53a5351d JM |
6940 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6941 | b->number); | |
c906108c SS |
6942 | return 0; |
6943 | case bp_breakpoint: | |
6944 | case bp_hardware_breakpoint: | |
6945 | case bp_catch_load: | |
6946 | case bp_catch_unload: | |
6947 | if (b->addr_string == NULL) | |
6948 | { | |
6949 | /* Anything without a string can't be re-set. */ | |
6950 | delete_breakpoint (b); | |
6951 | return 0; | |
6952 | } | |
b18c45ed AC |
6953 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
6954 | ||
6955 | ``And a hack it is, although Apple's Darwin version of GDB | |
6956 | contains an almost identical hack to implement a "future | |
6957 | break" command. It seems to work in many real world cases, | |
6958 | but it is easy to come up with a test case where the patch | |
6959 | doesn't help at all.'' | |
6960 | ||
6961 | ``It seems that the way GDB implements breakpoints - in - | |
6962 | shared - libraries was designed for a.out shared library | |
6963 | systems (SunOS 4) where shared libraries were loaded at a | |
6964 | fixed address in memory. Since ELF shared libraries can (and | |
6965 | will) be loaded at any address in memory, things break. | |
6966 | Fixing this is not trivial. Therefore, I'm not sure whether | |
6967 | we should add this hack to the branch only. I cannot | |
6968 | guarantee that things will be fixed on the trunk in the near | |
6969 | future.'' | |
6970 | ||
6971 | In case we have a problem, disable this breakpoint. We'll | |
6972 | restore its status if we succeed. Don't disable a | |
6973 | shlib_disabled breakpoint though. There's a fair chance we | |
6974 | can't re-set it if the shared library it's in hasn't been | |
6975 | loaded yet. */ | |
b5de0fa7 | 6976 | save_enable = b->enable_state; |
b18c45ed AC |
6977 | if (b->enable_state != bp_shlib_disabled) |
6978 | b->enable_state = bp_disabled; | |
c906108c SS |
6979 | |
6980 | set_language (b->language); | |
6981 | input_radix = b->input_radix; | |
6982 | s = b->addr_string; | |
c5aa993b | 6983 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6984 | for (i = 0; i < sals.nelts; i++) |
6985 | { | |
6986 | resolve_sal_pc (&sals.sals[i]); | |
6987 | ||
6988 | /* Reparse conditions, they might contain references to the | |
6989 | old symtab. */ | |
6990 | if (b->cond_string != NULL) | |
6991 | { | |
6992 | s = b->cond_string; | |
6993 | if (b->cond) | |
b8c9b27d | 6994 | xfree (b->cond); |
c906108c SS |
6995 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
6996 | } | |
6997 | ||
c5aa993b | 6998 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 6999 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
7000 | /* ...or new and old breakpoints both have source files, and |
7001 | the source file name or the line number changes... */ | |
c906108c SS |
7002 | || (b->source_file != NULL |
7003 | && sals.sals[i].symtab != NULL | |
7004 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
7005 | || b->line_number != sals.sals[i].line) | |
c906108c | 7006 | ) |
c5aa993b JM |
7007 | /* ...or we switch between having a source file and not having |
7008 | one. */ | |
7009 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7010 | ) | |
c906108c SS |
7011 | { |
7012 | if (b->source_file != NULL) | |
b8c9b27d | 7013 | xfree (b->source_file); |
c906108c SS |
7014 | if (sals.sals[i].symtab == NULL) |
7015 | b->source_file = NULL; | |
7016 | else | |
7017 | b->source_file = | |
7018 | savestring (sals.sals[i].symtab->filename, | |
7019 | strlen (sals.sals[i].symtab->filename)); | |
7020 | b->line_number = sals.sals[i].line; | |
7021 | b->address = sals.sals[i].pc; | |
7022 | ||
c5aa993b | 7023 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7024 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7025 | breakpoints. */ |
c906108c SS |
7026 | |
7027 | mention (b); | |
7028 | ||
7029 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7030 | rather than once for every breakpoint. */ |
c906108c SS |
7031 | breakpoints_changed (); |
7032 | } | |
7033 | b->section = sals.sals[i].section; | |
b5de0fa7 | 7034 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7035 | |
7036 | ||
c5aa993b | 7037 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7038 | can be used. */ |
9f60f21b | 7039 | check_duplicates (b); |
c906108c SS |
7040 | |
7041 | } | |
b8c9b27d | 7042 | xfree (sals.sals); |
c906108c SS |
7043 | break; |
7044 | ||
7045 | case bp_watchpoint: | |
7046 | case bp_hardware_watchpoint: | |
7047 | case bp_read_watchpoint: | |
7048 | case bp_access_watchpoint: | |
7049 | innermost_block = NULL; | |
53a5351d JM |
7050 | /* The issue arises of what context to evaluate this in. The |
7051 | same one as when it was set, but what does that mean when | |
7052 | symbols have been re-read? We could save the filename and | |
7053 | functionname, but if the context is more local than that, the | |
7054 | best we could do would be something like how many levels deep | |
7055 | and which index at that particular level, but that's going to | |
7056 | be less stable than filenames or function names. */ | |
7057 | ||
c906108c SS |
7058 | /* So for now, just use a global context. */ |
7059 | if (b->exp) | |
b8c9b27d | 7060 | xfree (b->exp); |
c906108c SS |
7061 | b->exp = parse_expression (b->exp_string); |
7062 | b->exp_valid_block = innermost_block; | |
7063 | mark = value_mark (); | |
7064 | if (b->val) | |
7065 | value_free (b->val); | |
7066 | b->val = evaluate_expression (b->exp); | |
7067 | release_value (b->val); | |
a881cf8e | 7068 | if (VALUE_LAZY (b->val) && b->enable_state == bp_enabled) |
c906108c SS |
7069 | value_fetch_lazy (b->val); |
7070 | ||
7071 | if (b->cond_string != NULL) | |
7072 | { | |
7073 | s = b->cond_string; | |
7074 | if (b->cond) | |
b8c9b27d | 7075 | xfree (b->cond); |
c5aa993b | 7076 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7077 | } |
b5de0fa7 | 7078 | if (b->enable_state == bp_enabled) |
c906108c SS |
7079 | mention (b); |
7080 | value_free_to_mark (mark); | |
7081 | break; | |
c5aa993b JM |
7082 | case bp_catch_catch: |
7083 | case bp_catch_throw: | |
c906108c | 7084 | break; |
c5aa993b JM |
7085 | /* We needn't really do anything to reset these, since the mask |
7086 | that requests them is unaffected by e.g., new libraries being | |
7087 | loaded. */ | |
c906108c SS |
7088 | case bp_catch_fork: |
7089 | case bp_catch_vfork: | |
7090 | case bp_catch_exec: | |
7091 | break; | |
c5aa993b | 7092 | |
c906108c SS |
7093 | default: |
7094 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7095 | /* fall through */ | |
1900040c MS |
7096 | /* Delete longjmp and overlay event breakpoints; they will be |
7097 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7098 | case bp_longjmp: |
7099 | case bp_longjmp_resume: | |
1900040c | 7100 | case bp_overlay_event: |
c906108c SS |
7101 | delete_breakpoint (b); |
7102 | break; | |
7103 | ||
c5aa993b JM |
7104 | /* This breakpoint is special, it's set up when the inferior |
7105 | starts and we really don't want to touch it. */ | |
c906108c SS |
7106 | case bp_shlib_event: |
7107 | ||
c4093a6a JM |
7108 | /* Like bp_shlib_event, this breakpoint type is special. |
7109 | Once it is set up, we do not want to touch it. */ | |
7110 | case bp_thread_event: | |
7111 | ||
c5aa993b JM |
7112 | /* Keep temporary breakpoints, which can be encountered when we step |
7113 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7114 | Otherwise these should have been blown away via the cleanup chain | |
7115 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7116 | case bp_until: |
7117 | case bp_finish: | |
7118 | case bp_watchpoint_scope: | |
7119 | case bp_call_dummy: | |
7120 | case bp_step_resume: | |
7121 | break; | |
7122 | } | |
7123 | ||
7124 | return 0; | |
7125 | } | |
7126 | ||
7127 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7128 | void | |
fba45db2 | 7129 | breakpoint_re_set (void) |
c906108c SS |
7130 | { |
7131 | struct breakpoint *b, *temp; | |
7132 | enum language save_language; | |
7133 | int save_input_radix; | |
7134 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
7135 | char message[sizeof (message1) + 30 /* slop */ ]; |
7136 | ||
c906108c SS |
7137 | save_language = current_language->la_language; |
7138 | save_input_radix = input_radix; | |
7139 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7140 | { |
53a5351d JM |
7141 | /* Format possible error msg */ |
7142 | sprintf (message, message1, b->number); | |
c5aa993b JM |
7143 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
7144 | } | |
c906108c SS |
7145 | set_language (save_language); |
7146 | input_radix = save_input_radix; | |
7147 | ||
9df628e0 RE |
7148 | if (GET_LONGJMP_TARGET_P ()) |
7149 | { | |
7150 | create_longjmp_breakpoint ("longjmp"); | |
7151 | create_longjmp_breakpoint ("_longjmp"); | |
7152 | create_longjmp_breakpoint ("siglongjmp"); | |
7153 | create_longjmp_breakpoint ("_siglongjmp"); | |
7154 | create_longjmp_breakpoint (NULL); | |
7155 | } | |
1900040c MS |
7156 | |
7157 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7158 | } |
7159 | \f | |
c906108c SS |
7160 | /* Reset the thread number of this breakpoint: |
7161 | ||
7162 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7163 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7164 | void |
fba45db2 | 7165 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7166 | { |
7167 | if (b->thread != -1) | |
7168 | { | |
39f77062 KB |
7169 | if (in_thread_list (inferior_ptid)) |
7170 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7171 | } |
7172 | } | |
7173 | ||
03ac34d5 MS |
7174 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7175 | If from_tty is nonzero, it prints a message to that effect, | |
7176 | which ends with a period (no newline). */ | |
7177 | ||
c906108c | 7178 | void |
fba45db2 | 7179 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c SS |
7180 | { |
7181 | register struct breakpoint *b; | |
7182 | ||
7183 | if (count < 0) | |
7184 | count = 0; | |
7185 | ||
7186 | ALL_BREAKPOINTS (b) | |
7187 | if (b->number == bptnum) | |
c5aa993b JM |
7188 | { |
7189 | b->ignore_count = count; | |
221ea385 KS |
7190 | if (from_tty) |
7191 | { | |
7192 | if (count == 0) | |
7193 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7194 | bptnum); | |
7195 | else if (count == 1) | |
7196 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7197 | bptnum); | |
7198 | else | |
7199 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7200 | count, bptnum); | |
7201 | } | |
c5aa993b | 7202 | breakpoints_changed (); |
221ea385 | 7203 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7204 | return; |
7205 | } | |
c906108c SS |
7206 | |
7207 | error ("No breakpoint number %d.", bptnum); | |
7208 | } | |
7209 | ||
7210 | /* Clear the ignore counts of all breakpoints. */ | |
7211 | void | |
fba45db2 | 7212 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7213 | { |
7214 | struct breakpoint *b; | |
7215 | ||
7216 | ALL_BREAKPOINTS (b) | |
7217 | b->ignore_count = 0; | |
7218 | } | |
7219 | ||
7220 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7221 | ||
7222 | static void | |
fba45db2 | 7223 | ignore_command (char *args, int from_tty) |
c906108c SS |
7224 | { |
7225 | char *p = args; | |
7226 | register int num; | |
7227 | ||
7228 | if (p == 0) | |
7229 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7230 | |
c906108c | 7231 | num = get_number (&p); |
5c44784c JM |
7232 | if (num == 0) |
7233 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7234 | if (*p == 0) |
7235 | error ("Second argument (specified ignore-count) is missing."); | |
7236 | ||
7237 | set_ignore_count (num, | |
7238 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7239 | from_tty); | |
221ea385 KS |
7240 | if (from_tty) |
7241 | printf_filtered ("\n"); | |
c906108c SS |
7242 | } |
7243 | \f | |
7244 | /* Call FUNCTION on each of the breakpoints | |
7245 | whose numbers are given in ARGS. */ | |
7246 | ||
7247 | static void | |
831662b3 | 7248 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c SS |
7249 | { |
7250 | register char *p = args; | |
7251 | char *p1; | |
7252 | register int num; | |
5c44784c | 7253 | register struct breakpoint *b, *tmp; |
11cf8741 | 7254 | int match; |
c906108c SS |
7255 | |
7256 | if (p == 0) | |
7257 | error_no_arg ("one or more breakpoint numbers"); | |
7258 | ||
7259 | while (*p) | |
7260 | { | |
11cf8741 | 7261 | match = 0; |
c906108c | 7262 | p1 = p; |
c5aa993b | 7263 | |
5c44784c JM |
7264 | num = get_number_or_range (&p1); |
7265 | if (num == 0) | |
c5aa993b | 7266 | { |
5c44784c JM |
7267 | warning ("bad breakpoint number at or near '%s'", p); |
7268 | } | |
7269 | else | |
7270 | { | |
7271 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7272 | if (b->number == num) | |
7273 | { | |
7274 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7275 | match = 1; |
5c44784c JM |
7276 | function (b); |
7277 | if (related_breakpoint) | |
7278 | function (related_breakpoint); | |
11cf8741 | 7279 | break; |
5c44784c | 7280 | } |
11cf8741 JM |
7281 | if (match == 0) |
7282 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7283 | } |
c906108c SS |
7284 | p = p1; |
7285 | } | |
7286 | } | |
7287 | ||
1900040c MS |
7288 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7289 | If from_tty is nonzero, it prints a message to that effect, | |
7290 | which ends with a period (no newline). */ | |
7291 | ||
c906108c | 7292 | void |
fba45db2 | 7293 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7294 | { |
7295 | /* Never disable a watchpoint scope breakpoint; we want to | |
7296 | hit them when we leave scope so we can delete both the | |
7297 | watchpoint and its scope breakpoint at that time. */ | |
7298 | if (bpt->type == bp_watchpoint_scope) | |
7299 | return; | |
7300 | ||
c2c6d25f | 7301 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7302 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7303 | return; |
7304 | ||
b5de0fa7 | 7305 | bpt->enable_state = bp_disabled; |
c906108c | 7306 | |
9f60f21b | 7307 | check_duplicates (bpt); |
c906108c SS |
7308 | |
7309 | if (modify_breakpoint_hook) | |
7310 | modify_breakpoint_hook (bpt); | |
104c1213 | 7311 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7312 | } |
7313 | ||
7314 | /* ARGSUSED */ | |
7315 | static void | |
fba45db2 | 7316 | disable_command (char *args, int from_tty) |
c906108c SS |
7317 | { |
7318 | register struct breakpoint *bpt; | |
7319 | if (args == 0) | |
7320 | ALL_BREAKPOINTS (bpt) | |
7321 | switch (bpt->type) | |
c5aa993b JM |
7322 | { |
7323 | case bp_none: | |
53a5351d JM |
7324 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7325 | bpt->number); | |
c5aa993b JM |
7326 | continue; |
7327 | case bp_breakpoint: | |
7328 | case bp_catch_load: | |
7329 | case bp_catch_unload: | |
7330 | case bp_catch_fork: | |
7331 | case bp_catch_vfork: | |
7332 | case bp_catch_exec: | |
7333 | case bp_catch_catch: | |
7334 | case bp_catch_throw: | |
7335 | case bp_hardware_breakpoint: | |
7336 | case bp_watchpoint: | |
7337 | case bp_hardware_watchpoint: | |
7338 | case bp_read_watchpoint: | |
7339 | case bp_access_watchpoint: | |
7340 | disable_breakpoint (bpt); | |
7341 | default: | |
7342 | continue; | |
7343 | } | |
c906108c SS |
7344 | else |
7345 | map_breakpoint_numbers (args, disable_breakpoint); | |
7346 | } | |
7347 | ||
7348 | static void | |
fba45db2 | 7349 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7350 | { |
7351 | struct frame_info *save_selected_frame = NULL; | |
7352 | int save_selected_frame_level = -1; | |
7353 | int target_resources_ok, other_type_used; | |
7354 | struct value *mark; | |
7355 | ||
7356 | if (bpt->type == bp_hardware_breakpoint) | |
7357 | { | |
7358 | int i; | |
c5aa993b | 7359 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7360 | target_resources_ok = |
7361 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7362 | i + 1, 0); | |
c906108c | 7363 | if (target_resources_ok == 0) |
c5aa993b | 7364 | error ("No hardware breakpoint support in the target."); |
c906108c | 7365 | else if (target_resources_ok < 0) |
c5aa993b | 7366 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7367 | } |
7368 | ||
b5de0fa7 EZ |
7369 | if (bpt->enable_state != bp_permanent) |
7370 | bpt->enable_state = bp_enabled; | |
c906108c | 7371 | bpt->disposition = disposition; |
9f60f21b | 7372 | check_duplicates (bpt); |
c906108c SS |
7373 | breakpoints_changed (); |
7374 | ||
53a5351d JM |
7375 | if (bpt->type == bp_watchpoint || |
7376 | bpt->type == bp_hardware_watchpoint || | |
7377 | bpt->type == bp_read_watchpoint || | |
7378 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7379 | { |
7380 | if (bpt->exp_valid_block != NULL) | |
7381 | { | |
7382 | struct frame_info *fr = | |
101dcfbe | 7383 | fr = frame_find_by_id (bpt->watchpoint_frame); |
c906108c SS |
7384 | if (fr == NULL) |
7385 | { | |
7386 | printf_filtered ("\ | |
7387 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7388 | is valid is not currently in scope.\n", bpt->number); | |
b5de0fa7 | 7389 | bpt->enable_state = bp_disabled; |
c906108c SS |
7390 | return; |
7391 | } | |
7392 | ||
6e7f8b9c AC |
7393 | save_selected_frame = deprecated_selected_frame; |
7394 | save_selected_frame_level = frame_relative_level (deprecated_selected_frame); | |
0f7d239c | 7395 | select_frame (fr); |
c906108c SS |
7396 | } |
7397 | ||
7398 | value_free (bpt->val); | |
7399 | mark = value_mark (); | |
7400 | bpt->val = evaluate_expression (bpt->exp); | |
7401 | release_value (bpt->val); | |
7402 | if (VALUE_LAZY (bpt->val)) | |
7403 | value_fetch_lazy (bpt->val); | |
7404 | ||
7405 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7406 | bpt->type == bp_read_watchpoint || |
7407 | bpt->type == bp_access_watchpoint) | |
7408 | { | |
7409 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7410 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7411 | ||
7412 | /* Hack around 'unused var' error for some targets here */ | |
7413 | (void) mem_cnt, i; | |
7414 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7415 | bpt->type, i + mem_cnt, other_type_used); | |
7416 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7417 | bp_watchpoint in the following condition */ | |
7418 | if (target_resources_ok < 0) | |
7419 | { | |
7420 | printf_filtered ("\ | |
c906108c SS |
7421 | Cannot enable watchpoint %d because target watch resources\n\ |
7422 | have been allocated for other watchpoints.\n", bpt->number); | |
b5de0fa7 | 7423 | bpt->enable_state = bp_disabled; |
c5aa993b JM |
7424 | value_free_to_mark (mark); |
7425 | return; | |
7426 | } | |
7427 | } | |
c906108c SS |
7428 | |
7429 | if (save_selected_frame_level >= 0) | |
0f7d239c | 7430 | select_frame (save_selected_frame); |
c906108c SS |
7431 | value_free_to_mark (mark); |
7432 | } | |
7433 | if (modify_breakpoint_hook) | |
7434 | modify_breakpoint_hook (bpt); | |
104c1213 | 7435 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7436 | } |
7437 | ||
7438 | void | |
fba45db2 | 7439 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7440 | { |
7441 | do_enable_breakpoint (bpt, bpt->disposition); | |
7442 | } | |
7443 | ||
7444 | /* The enable command enables the specified breakpoints (or all defined | |
7445 | breakpoints) so they once again become (or continue to be) effective | |
7446 | in stopping the inferior. */ | |
7447 | ||
7448 | /* ARGSUSED */ | |
7449 | static void | |
fba45db2 | 7450 | enable_command (char *args, int from_tty) |
c906108c SS |
7451 | { |
7452 | register struct breakpoint *bpt; | |
7453 | if (args == 0) | |
7454 | ALL_BREAKPOINTS (bpt) | |
7455 | switch (bpt->type) | |
c5aa993b JM |
7456 | { |
7457 | case bp_none: | |
53a5351d JM |
7458 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7459 | bpt->number); | |
c5aa993b JM |
7460 | continue; |
7461 | case bp_breakpoint: | |
7462 | case bp_catch_load: | |
7463 | case bp_catch_unload: | |
7464 | case bp_catch_fork: | |
7465 | case bp_catch_vfork: | |
7466 | case bp_catch_exec: | |
7467 | case bp_catch_catch: | |
7468 | case bp_catch_throw: | |
7469 | case bp_hardware_breakpoint: | |
7470 | case bp_watchpoint: | |
7471 | case bp_hardware_watchpoint: | |
7472 | case bp_read_watchpoint: | |
7473 | case bp_access_watchpoint: | |
7474 | enable_breakpoint (bpt); | |
7475 | default: | |
7476 | continue; | |
7477 | } | |
c906108c SS |
7478 | else |
7479 | map_breakpoint_numbers (args, enable_breakpoint); | |
7480 | } | |
7481 | ||
7482 | static void | |
fba45db2 | 7483 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7484 | { |
b5de0fa7 | 7485 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7486 | } |
7487 | ||
7488 | /* ARGSUSED */ | |
7489 | static void | |
fba45db2 | 7490 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7491 | { |
7492 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7493 | } | |
7494 | ||
7495 | static void | |
fba45db2 | 7496 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7497 | { |
b5de0fa7 | 7498 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7499 | } |
7500 | ||
7501 | /* ARGSUSED */ | |
7502 | static void | |
fba45db2 | 7503 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7504 | { |
7505 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7506 | } | |
7507 | \f | |
7508 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7509 | ||
7510 | struct symtabs_and_lines | |
fba45db2 | 7511 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7512 | { |
7513 | struct symtabs_and_lines sals; | |
7514 | if (string == 0) | |
7515 | error ("Empty line specification."); | |
7516 | if (default_breakpoint_valid) | |
7517 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7518 | default_breakpoint_symtab, |
7519 | default_breakpoint_line, | |
c5aa993b | 7520 | (char ***) NULL); |
c906108c SS |
7521 | else |
7522 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 7523 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7524 | if (*string) |
7525 | error ("Junk at end of line specification: %s", string); | |
7526 | return sals; | |
7527 | } | |
7528 | \f | |
7529 | void | |
fba45db2 | 7530 | _initialize_breakpoint (void) |
c906108c SS |
7531 | { |
7532 | struct cmd_list_element *c; | |
7533 | ||
7534 | breakpoint_chain = 0; | |
7535 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7536 | before a breakpoint is set. */ | |
7537 | breakpoint_count = 0; | |
7538 | ||
7539 | add_com ("ignore", class_breakpoint, ignore_command, | |
7540 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7541 | Usage is `ignore N COUNT'."); | |
7542 | if (xdb_commands) | |
c5aa993b | 7543 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7544 | |
7545 | add_com ("commands", class_breakpoint, commands_command, | |
7546 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7547 | Give breakpoint number as argument after \"commands\".\n\ | |
7548 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7549 | The commands themselves follow starting on the next line.\n\ | |
7550 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7551 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7552 | then no output is printed when it is hit, except what the commands print."); | |
7553 | ||
7554 | add_com ("condition", class_breakpoint, condition_command, | |
7555 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7556 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7557 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7558 | |
c94fdfd0 EZ |
7559 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7560 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7561 | Like \"break\" except the breakpoint is only temporary,\n\ |
7562 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7563 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7564 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7565 | |
c94fdfd0 EZ |
7566 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7567 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7568 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7569 | some target hardware may not have this support."); | |
5ba2abeb | 7570 | set_cmd_completer (c, location_completer); |
c906108c | 7571 | |
c94fdfd0 EZ |
7572 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7573 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7574 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7575 | so it will be deleted when hit."); | |
5ba2abeb | 7576 | set_cmd_completer (c, location_completer); |
c906108c SS |
7577 | |
7578 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7579 | "Enable some breakpoints.\n\ | |
7580 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7581 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7582 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7583 | With a subcommand you can enable temporarily.", | |
7584 | &enablelist, "enable ", 1, &cmdlist); | |
7585 | if (xdb_commands) | |
c5aa993b JM |
7586 | add_com ("ab", class_breakpoint, enable_command, |
7587 | "Enable some breakpoints.\n\ | |
c906108c SS |
7588 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7589 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7590 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7591 | With a subcommand you can enable temporarily."); | |
7592 | ||
7593 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7594 | ||
7595 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7596 | "Enable some breakpoints.\n\ |
c906108c SS |
7597 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7598 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7599 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7600 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7601 | |
7602 | add_cmd ("once", no_class, enable_once_command, | |
7603 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7604 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7605 | &enablebreaklist); | |
7606 | ||
7607 | add_cmd ("delete", no_class, enable_delete_command, | |
7608 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7609 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7610 | &enablebreaklist); | |
7611 | ||
7612 | add_cmd ("delete", no_class, enable_delete_command, | |
7613 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7614 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7615 | &enablelist); | |
7616 | ||
7617 | add_cmd ("once", no_class, enable_once_command, | |
7618 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7619 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7620 | &enablelist); | |
7621 | ||
7622 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7623 | "Disable some breakpoints.\n\ |
c906108c SS |
7624 | Arguments are breakpoint numbers with spaces in between.\n\ |
7625 | To disable all breakpoints, give no argument.\n\ | |
7626 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7627 | &disablelist, "disable ", 1, &cmdlist); | |
7628 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7629 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7630 | if (xdb_commands) | |
c5aa993b JM |
7631 | add_com ("sb", class_breakpoint, disable_command, |
7632 | "Disable some breakpoints.\n\ | |
c906108c SS |
7633 | Arguments are breakpoint numbers with spaces in between.\n\ |
7634 | To disable all breakpoints, give no argument.\n\ | |
7635 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7636 | ||
7637 | add_cmd ("breakpoints", class_alias, disable_command, | |
7638 | "Disable some breakpoints.\n\ | |
7639 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7640 | To disable all breakpoints, give no argument.\n\ | |
7641 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7642 | This command may be abbreviated \"disable\".", | |
7643 | &disablelist); | |
7644 | ||
7645 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7646 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7647 | Arguments are breakpoint numbers with spaces in between.\n\ |
7648 | To delete all breakpoints, give no argument.\n\ | |
7649 | \n\ | |
7650 | Also a prefix command for deletion of other GDB objects.\n\ | |
7651 | The \"unset\" command is also an alias for \"delete\".", | |
7652 | &deletelist, "delete ", 1, &cmdlist); | |
7653 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7654 | if (xdb_commands) | |
7655 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7656 | "Delete some breakpoints.\n\ |
c906108c SS |
7657 | Arguments are breakpoint numbers with spaces in between.\n\ |
7658 | To delete all breakpoints, give no argument.\n"); | |
7659 | ||
7660 | add_cmd ("breakpoints", class_alias, delete_command, | |
7661 | "Delete some breakpoints or auto-display expressions.\n\ | |
7662 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7663 | To delete all breakpoints, give no argument.\n\ | |
7664 | This command may be abbreviated \"delete\".", | |
7665 | &deletelist); | |
7666 | ||
7667 | add_com ("clear", class_breakpoint, clear_command, | |
7668 | concat ("Clear breakpoint at specified line or function.\n\ | |
7669 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7670 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7671 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7672 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7673 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7674 | is executing in.\n\ |
7675 | \n\ | |
7676 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7677 | ||
c94fdfd0 EZ |
7678 | c = add_com ("break", class_breakpoint, break_command, |
7679 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7680 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7681 | If line number is specified, break at start of code for that line.\n\ | |
7682 | If function is specified, break at start of code for that function.\n\ | |
7683 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7684 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7685 | This is useful for breaking on return to a stack frame.\n\ |
7686 | \n\ | |
7687 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7688 | \n\ | |
7689 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7690 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7691 | |
c906108c SS |
7692 | add_com_alias ("b", "break", class_run, 1); |
7693 | add_com_alias ("br", "break", class_run, 1); | |
7694 | add_com_alias ("bre", "break", class_run, 1); | |
7695 | add_com_alias ("brea", "break", class_run, 1); | |
7696 | ||
502fd408 | 7697 | if (xdb_commands) |
c906108c SS |
7698 | { |
7699 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7700 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7701 | } |
7702 | ||
7703 | if (dbx_commands) | |
7704 | { | |
c5aa993b JM |
7705 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7706 | "Break in function/address or break at a line in the current file.", | |
7707 | &stoplist, "stop ", 1, &cmdlist); | |
7708 | add_cmd ("in", class_breakpoint, stopin_command, | |
7709 | "Break in function or address.\n", &stoplist); | |
7710 | add_cmd ("at", class_breakpoint, stopat_command, | |
7711 | "Break at a line in the current file.\n", &stoplist); | |
7712 | add_com ("status", class_info, breakpoints_info, | |
7713 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7714 | The \"Type\" column indicates one of:\n\ |
7715 | \tbreakpoint - normal breakpoint\n\ | |
7716 | \twatchpoint - watchpoint\n\ | |
7717 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7718 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7719 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7720 | address and file/line number respectively.\n\n", | |
c5aa993b | 7721 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7722 | are set to the address of the last breakpoint listed.\n\n\ |
7723 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7724 | breakpoint set.", NULL)); | |
7725 | } | |
7726 | ||
7727 | add_info ("breakpoints", breakpoints_info, | |
7728 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7729 | The \"Type\" column indicates one of:\n\ | |
7730 | \tbreakpoint - normal breakpoint\n\ | |
7731 | \twatchpoint - watchpoint\n\ | |
7732 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7733 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7734 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7735 | address and file/line number respectively.\n\n", | |
c5aa993b | 7736 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7737 | are set to the address of the last breakpoint listed.\n\n\ |
7738 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7739 | breakpoint set.", NULL)); | |
7740 | ||
7741 | if (xdb_commands) | |
c5aa993b JM |
7742 | add_com ("lb", class_breakpoint, breakpoints_info, |
7743 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7744 | The \"Type\" column indicates one of:\n\ |
7745 | \tbreakpoint - normal breakpoint\n\ | |
7746 | \twatchpoint - watchpoint\n\ | |
7747 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7748 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7749 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7750 | address and file/line number respectively.\n\n", | |
c5aa993b | 7751 | "Convenience variable \"$_\" 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 \"$bpnum\" contains the number of the last\n\ | |
7754 | breakpoint set.", NULL)); | |
7755 | ||
c906108c | 7756 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7757 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7758 | The \"Type\" column indicates one of:\n\ |
7759 | \tbreakpoint - normal breakpoint\n\ | |
7760 | \twatchpoint - watchpoint\n\ | |
7761 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7762 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7763 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7764 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7765 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7766 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7767 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7768 | address and file/line number respectively.\n\n", | |
c5aa993b | 7769 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7770 | are set to the address of the last breakpoint listed.\n\n\ |
7771 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7772 | breakpoint set.", NULL), | |
7773 | &maintenanceinfolist); | |
7774 | ||
c906108c | 7775 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7776 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7777 | Raised signals may be caught:\n\ |
7778 | \tcatch signal - all signals\n\ | |
7779 | \tcatch signal <signame> - a particular signal\n\ | |
7780 | Raised exceptions may be caught:\n\ | |
7781 | \tcatch throw - all exceptions, when thrown\n\ | |
7782 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7783 | \tcatch catch - all exceptions, when caught\n\ | |
7784 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7785 | Thread or process events may be caught:\n\ | |
7786 | \tcatch thread_start - any threads, just after creation\n\ | |
7787 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7788 | \tcatch thread_join - any threads, just after joins\n\ | |
7789 | Process events may be caught:\n\ | |
7790 | \tcatch start - any processes, just after creation\n\ | |
7791 | \tcatch exit - any processes, just before expiration\n\ | |
7792 | \tcatch fork - calls to fork()\n\ | |
7793 | \tcatch vfork - calls to vfork()\n\ | |
7794 | \tcatch exec - calls to exec()\n\ | |
7795 | Dynamically-linked library events may be caught:\n\ | |
7796 | \tcatch load - loads of any library\n\ | |
7797 | \tcatch load <libname> - loads of a particular library\n\ | |
7798 | \tcatch unload - unloads of any library\n\ | |
7799 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7800 | The act of your program's execution stopping may also be caught:\n\ | |
7801 | \tcatch stop\n\n\ | |
7802 | C++ exceptions may be caught:\n\ | |
7803 | \tcatch throw - all exceptions, when thrown\n\ | |
7804 | \tcatch catch - all exceptions, when caught\n\ | |
7805 | \n\ | |
7806 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7807 | after a fork or vfork is caught.\n\n\ | |
7808 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7809 | |
c906108c | 7810 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7811 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7812 | Args like \"catch\" command.\n\ |
7813 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7814 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7815 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 7816 | |
c94fdfd0 EZ |
7817 | c = add_com ("watch", class_breakpoint, watch_command, |
7818 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7819 | A watchpoint stops execution of your program whenever the value of\n\ |
7820 | an expression changes."); | |
5ba2abeb | 7821 | set_cmd_completer (c, location_completer); |
c906108c | 7822 | |
c94fdfd0 EZ |
7823 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
7824 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
7825 | A watchpoint stops execution of your program whenever the value of\n\ |
7826 | an expression is read."); | |
5ba2abeb | 7827 | set_cmd_completer (c, location_completer); |
c906108c | 7828 | |
c94fdfd0 EZ |
7829 | c = add_com ("awatch", class_breakpoint, awatch_command, |
7830 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7831 | A watchpoint stops execution of your program whenever the value of\n\ |
7832 | an expression is either read or written."); | |
5ba2abeb | 7833 | set_cmd_completer (c, location_completer); |
c906108c SS |
7834 | |
7835 | add_info ("watchpoints", breakpoints_info, | |
7836 | "Synonym for ``info breakpoints''."); | |
7837 | ||
7838 | ||
7839 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7840 | (char *) &can_use_hw_watchpoints, |
7841 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7842 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7843 | such is available. (However, any hardware watchpoints that were\n\ | |
7844 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7845 | hardware.)", | |
c5aa993b | 7846 | &setlist); |
c906108c SS |
7847 | add_show_from_set (c, &showlist); |
7848 | ||
7849 | can_use_hw_watchpoints = 1; | |
7850 | } |